Topic: "TED NB-418K and TL-2K1"
Profession: "Electric locomotive driver"
Yaroslavl subdivision of the Northern UCPK
1 | Teachers of JSC "Russian Railways" Korkina I.V. | 2017 Target
Explore
appointment
and
device
skeleton,
end shields, main and
additional poles, anchors and
brush apparatus TED TL-2K1 and
NB-418K.
2 | Russian Railways teachers | 2017 Lesson plan
1.
2.
3.
4.
5.
6.
7.
8.
Purpose and device of TED TL-2K and NB-418K.
The skeleton.
Bearing shields.
The main poles.
Additional poles.
Anchor.
Collector.
Brush device.
3 | Russian Railways teachers | 2017
The traction electric motor TL-2K1 is installed on
electric locomotives VL10, VL11, traction motor NB-418K6
installed on VL80S electric locomotives.
Serve for the conversion of electrical energy
traction generator into mechanical, transmitted to
wheelset. Are a six-pole machine
direct current with series excitation and
forced ventilation.
Consist of a frame, two bearing shields, six
main poles, six additional poles, anchors and
brush apparatus.
4 | Russian Railways teachers | 2017 Purpose and structure of TED TL-2K and NB418K
Technical specifications
Basic data
Units
TL-2K1
measurements
Voltage
Power:
˗ hour
˗ long
Current:
˗ hour
˗ long
Efficiency
Weight
5 | Russian Railways teachers | 2017
V
kWh
NB-418K6
1500
950
670
575
790
740
480
410
93,1
5000
880
820
94,5
4350
A
%
Kg Skeleton
The skeleton serves as a magnetic circuit and a housing for fastening
the rest of the components. Has windows for entry and exit
cooling air, three manifold inspection hatches and
brush apparatus, necks for the installation of bearing
shields, tide and removable bracket for mounting on the frame
carts,
safety
tides,
tides
for
transportation and tides for attaching MOS caps. On
the outer side of the frame is a terminal box.
6 | Russian Railways teachers | 2017 Skeleton
7 | Russian Railways teachers | 2017 Skeleton
8 | Russian Railways teachers | 2017 Skeleton
9 | Russian Railways teachers | 2017 Skeleton
10 | Russian Railways teachers | 2017 Skeleton
11 | Russian Railways teachers | 2017 Bearing shields
End shields are used for the installation of anchor
bearings. Are disks of complex shape with
a central bore for the outer bearing race.
Single row roller bearings. Grease is consistent.
To prevent leakage of grease, the shields are equipped with
labyrinths and covers with gaskets.
12 | Russian Railways teachers | 2017 Bearing shields
13 | Russian Railways teachers | 2017 Bearing shields
14 | Russian Railways teachers | 2017 Major poles
The main poles serve to create magnetic flux
excitement. Consist of cores and coils. Core
made of insulated electrical steel sheets
1312 0.5 mm thick. Thicker ones are installed at the ends
sidewalls and riveted. Inside the core at
assembly at TL-2K1 two, at NB-418K6 steel
dowel bar with threaded bolt holes,
fixing the pole to the frame. On the armature side, the core has
broadening, which is called a pole piece and
serves for better distribution of magnetic flux and
coil mounting.
15 | Russian Railways teachers | 2017 Major poles
The TL-2K1 has 10 slots in the pole piece,
NB-418K6 6 grooves in which the coils are fastened with wedges
compensation winding made of busbar copper.
The field coil is made of soft
tape LMM 1.95x65 mm copper and is fixed on the core with
using a spring frame.
The body insulation of the windings of the main poles is made of
glass mica tape in eight layers.
16 | Russian Railways teachers | 2017 Major poles
1 compensation winding,
2- core,
3-rivets,
4-steel bar for attachment to
skeleton,
5-spring frame,
6- gasket made of electrolyte,
7- coils of the main poles (windings
excitation),
17 | Russian Railways teachers | 2017 Compensation winding
The compensation winding is connected in series
field windings and fit in the following way.
Half the winding on one pole and the other half on
the neighboring pole. As a result, one side of the pole
the tip is magnetized, and the other is demagnetized.
In other words, the magnetic field of the main poles,
destroyed by the reaction of the anchor will be restored, and the increased
the magnetic field will decrease.
The compensation winding consists of six coils of
soft rectangular copper wire PMM and has 10
turns.
18 | Russian Railways teachers | 2017 Additional poles
Additional poles are used to compensate for magnetic
flow anchors in geometric neutral and create
commuting EMF. Consist of cores and coils.
The coil for TL-2K1 is attached to the core using a steel
lining with screws, and for NB-418K6 using epoxy
compound. The core for TL-2K1 is solid steel, for NB418K6 it is recruited from sheets of electrical steel.
The pole piece is made of non-magnetic squares
(brass or duralumin). Between core and core
a non-magnetic gasket is installed.
The body insulation of the pole windings is made of
glass mica tape, coils together with cores
impregnated in epoxy compound EMT-1 or EMT-2 and
are one-piece monoblocks.
19 | Russian Railways teachers | 2017 Additional poles
.Additional pole:
1 - rivet; 2 - pole piece; 3 - core; 4 - flange; 5, 6 -
coil; 7 - textolite pad; 8 - spring frame; 9 - non-magnetic
pad.
20 | Russian Railways teachers | 2017 Additional poles
21 | Russian Railways teachers | 2017 DC machine skeleton
22 | Russian Railways teachers | 2017 Internal TED connection
The windings of the main poles are interconnected
sequentially inside the machine, outputs K - KK are displayed
outward and secured in the terminal box.
Additional coils poles are interconnected
serially and also serially connected with
compensation winding, and through brushes with armature winding
inside the machine, the ends of the winding I-YA are brought out in the box
conclusions.
23 | Russian Railways teachers | 2017 DC machine skeleton
24 | Russian Railways teachers | 2017 DC machine skeleton
Series connection of the specified windings
allows you to compensate for the causes of switching
which depend on the magnitude of the armature current. With an increase in current
anchors increase the risk of overshoot over the collector or
all-round fire.
This design allows you to connect to them
devices
carrying out
reversal
TED,
electrical braking; and field weakening resistors.
All traction electric motors are performed with forced ventilation, which
increases their power.
25 | Russian Railways teachers | 2017 Anchor
The armature serves to create EMF and electromagnetic
moment. Consists of shaft, core, thrust washers,
winding and collector. The core is assembled from sheets
electrical steel, pressed onto the shaft on
key, in a compressed state is held by pressing
washers, has channels for the passage of cooling air and
grooves for laying the winding. The winding is fastened in the grooves
wedges,
a
frontal
parts of
wire
or
glass bands.
26 | Russian Railways teachers | 2017 Anchor
DC machine armature core without winding (a); assembly
anchors (b); steel anchor sheets (s):
1 - armature shaft; 2 - a place for installing the collector; 3, 5 - push
washers (winding holders); 4 - anchor core; 6 - varnish film;
7 - steel sheet; 8-segment core
27 | Russian Railways teachers | 2017 Anchor
Armature winding device:
a, b - laying the anchor coils; c - insulation; 1 - anchor coils;
2 - collector; 3 - anchor core;
4.5 - top and bottom sides of the coil;
6,7,9 - cover, case and coil insulation;
8 - copper conductors
28 | Russian Railways teachers | 2017 Anchor
29 | Russian Railways teachers | 2017 Anchor
30 | Russian Railways teachers | 2017 Collector
Both in the generator and in the engine, the collector together with
brushes forms a sliding contact between the armature winding and
external electrical circuit.
The collector is assembled from wedge-shaped copper plates
section,
divided
mycanite
gaskets.
The protruding parts of the plates have grooves for fastening
armature winding conductors. On the side of the shaft, the plates have
dovetail shape with which the plates
clamped between the manifold sleeve and the pressure cone
through micanite cuffs.
31 | Russian Railways teachers | 2017 Collector
32 | Russian Railways teachers | 2017 Collector
33 | Russian Railways teachers | 2017 Brush apparatus
The brush apparatus is used to connect the armature winding with
external electrical circuit. Consists of a split traverse
pivot type, six brackets and six
brush holders. Steel channel cross-section
has a toothed rim on the outer rim, which is included in
engagement with the gear wheel of the rotary mechanism. Sectional
the brush holder bracket is bolted on two
insulating
fingers,
established
on
traverse.
The brush holder consists of a body with openings for split
brushes brand EG-61, on which the pressure
device.
34 | Russian Railways teachers | 2017 Brush device
Brush
device
consists
from
traverses,
brackets with insulating pins and brush holders.
Traverse TED - steel, cast, made in the form
cut ring. The traverse has teeth on the outer rim
swivel gears meshing with teeth
mechanism.
The bracket of the brush holder is detachable, consists of
body and lining, which are bolted to the
insulating pins installed on the traverse. From the side
the brush arm has a comb.
35 | Russian Railways teachers | 2017 Brush device
Insulation pins are studs
molded with plastic, attached to the traverse with crown
nuts.
The brush holders are attached to the bracket through
a stud nut with a spring washer. On surfaces
bracket and brush holder there is a comb which
allows you to select and fix a specific position
brush holder height relative to the working surface
collector and its wear.
The swivel mechanism consists of a pinion with a roller
fixed in the frame of the traction electric motor. The roller is square
turnkey shank.
36 | Russian Railways teachers | 2017 Brush device
37 | Russian Railways teachers | 2017 Brush device
38 | Russian Railways teachers | 2017 Brush device
39 | Russian Railways teachers | 2017 Anchor assembly with a brush device and
end shield
40 | Russian Railways teachers | 2017 TED NB-514
The NB-514 electric motor is designed to convert electrical
energy received from the contact network, into mechanical, transmitted from
engine shaft for a wheelset of an electric locomotive 2ES5K (3ES5K) or "Ermak"
power, kWt
835/780
Collector voltage, V
980/980
Armature current, A
905/843
Armature rotation frequency, rpm
905/925
The amount of ventilating air, m3 / min, not less
Efficiency,%
Insulation class for heat resistance of the main coils,
additional poles, compensation winding and armature winding
Engine weight (without gear), kg
41 | Russian Railways teachers | 2017
95
94,1/94,3
F
4280TED NB-514
The traction motor NB-514 is designed for the support-axial
suspension and is a six-pole
electric
car
pulsating
current
with
sequential excitation and independent system
ventilation.
The traction engine NB-514 is made on the basis of the engine
NB-418K
42 | Russian Railways teachers | 2017 Features of TED NB-514
Engine
NB-514 is more powerful than its predecessor, which
allows to develop an electric locomotive with a capacity of 10,000 kW per hour
mode.
It is more resistant to the emergence of circular lights on
collector, has protection against deformation of the coils of additional
poles by electrodynamic forces of short currents
closures and a number of other improvements.
The NB-514 engine is interchangeable with NB-418K according to the installation
dimensions and electromechanical characteristics.
It uses unified bearing units,
traverses, frame castings, collector, anchor sheets, shaft with
bushings, all threaded connections, gear reducer
transmission.
43 | Russian Railways teachers | 2017 Features of TED NB-514
The pole system has undergone significant changes
engine skeleton, engine mount bracket changed,
the cross-section of the conductors of the armature winding has been increased.
The frontal part of the anchor has been significantly changed in the NB-514 engine
from the side opposite to the collector. There are heads in it
are made open, which improves the cooling conditions,
increased the service life of the insulation.
To ensure the moisture resistance of the insulation and increase the term
armature and main pole service armature and coil winding
main poles are impregnated in EMT-1 epoxy compound.
The armature windings of the NB-514 engine are connected to the cockerels
collector arc welding in an inert gas environment.
44 | Russian Railways teachers | 2017 TED NB-514
45 | Russian Railways teachers | 2017 TED NB-514
46 | Russian Railways teachers | 2017 Homework
1. A.V. Grishchenko "Electric machines and converters
rolling stock ”, pp. 215-220.
2. A.A. Daylidko "Electric traction machines
rolling stock ", pp. 119-141, 143-146.
3. Working with notes.
4. Preparing for a survey based on the material covered.
47 | Russian Railways teachers | 2017 Thank you for the attention
Wish you success!
48
| teachers of Russian Railways | 2017
This is quite a lot of work; it contains 75 pages of text, 15 figures; 4 drawings are attached in the Compass program. Usually, not the entire engine is set, but some of its nodes. If you were asked so, you can shorten this work, or use our works d_3.2 - d_3.5
1 Brief characteristic of the TL-2K1 traction engine
1.1 Purpose of the TL-2K1 traction motor
The TL-2K1 DC traction electric motor (Fig. 1) is designed to convert electrical energy received from the contact network into mechanical energy. The torque of the electric motor armature shaft is transmitted to the wheelset through a double-sided single-stage cylindrical helical gear. With this transmission, the bearings of the electric motor do not receive additional loads in the axial direction.
Figure 1 - General view of the traction motor TL-2K1
Suspension of the electric motor is axial support. On the one hand, it is supported by motor-axial bearings on the axle of the wheelset of the electric locomotive, and on the other, on the bogie frame through the articulated suspension and rubber washers. The traction motor has a high power utilization factor (0.74) at the highest speed of the electric locomotive. Excitation of the electric motor in traction mode is sequential, and in recuperative mode it is independent.
The ventilation system is independent, axial, with the supply of ventilation air from above to the collector chamber and upward discharge from the opposite side along the axis of the electric motor.
1.2 Technical data of the TL-2K1 electric motor
The technical data of the TL-2K1 electric motor are as follows:
- Voltage at the terminals of the electric motor, V ......................................... 1500
- Hour mode
Current, A ............................................... .................................................. ...... 480
Power, kWt............................................... ........................................... 670
Rotation frequency, rpm ............................................ ............................ 790
K. p. D ............................................. .................................................. ...... 0.931 - Continuous mode
Current, A ............................................... .................................................. ..... 410
Power, kWt............................................... .......................................... 575
Rotation frequency, rpm ............................................ ............................. 830
K. p. D ............................................. .................................................. ........ 0.93 - Insulation class for heat resistance:
armature windings ................................................ ..............................................V
pole system ................................................ ...................................... F - The highest speed with medium worn tires,
rpm ............................................... .................................................. .... 1690 - Gear ratio ................................................ ......................... 88/23
- Resistance of windings at a temperature of 20 ° C, Ohm:
main poles ................................................ ..................................... 0,025
additional poles and compensation coils ............................ 0.0356 armature ............. .................................................. ....................................... 0,0317 - The amount of ventilating air, m3 / min, not less .............................. 95
- Weight without gear, kg ............................................. .............................. 5000
1.3 Design of traction motor TL-2K1
The traction motor TL-2K1 consists of a frame 3 (Fig. 2), an anchor 6, a brush apparatus 2 and end shields 1, 4. The frame is a cylindrical cast of steel grade 25L-P and simultaneously serves as a magnetic circuit. Attached to it are six main and six additional poles, a rotary traverse with six brush holders and shields with roller bearings in which the motor armature rotates.
The end shields are installed in the following sequence: the assembled frame with pole and compensation coils is placed with the side opposite to the collector, up. An inductive heater is used to heat the neck to a temperature of 100-150 ° C, insert and fix the shield with eight M24 bolts made of 45 steel.Then the frame is turned 180 °, the anchor is lowered, the traverse is installed and, similarly to the above, another shield is inserted and fastened with eight M24 bolts. From the outer surface, the frame has two lugs for attaching axleboxes of motor-axle bearings, a lug and a removable bracket for hanging the electric motor, safety lugs for transportation. On the side of the collector, there are three hatches designed to inspect the brush set and the collector. The hatches are hermetically closed with covers 7, 11, 15 (see Fig. 2).
Figure 2 - Longitudinal (a) and transverse (b) sections of the traction motor TL-2K1
The cover 7 of the upper manifold hatch is fixed on the frame with a special spring lock, the cover 15 of the lower hatch with one M20 bolt and a special bolt with a coil spring, and the cover 11 of the second lower hatch - with four M12 bolts. For supplying air from the side opposite to the collector, through a special casing 5, mounted on the end shield and frame. Outlets from the electric motor are made with a PPSRM-1-4000 cable with a cross-sectional area of 120 mm2. The cables are protected by tarpaulin covers with combined impregnation. On the cables there are labels made of PVC tubes with the designation I, YaYa, K and KK. Output cables I and YaYa (Fig. 3) are connected to the armature windings, additional poles and with compensation, and the output cables K and KK are connected to the windings of the main poles
A fragment of work with the design in PDF format can be viewed
The kit includes a drawing of the TL-2K1 traction engine of the VL-10 electric locomotive in A1 format in the "Compass" program (CDW format), as well as separate drawings of the MOS, traverse, brush holder.
The design of the traction electric motor TL-2K1
The design of the TL-2K1 traction motor is shown in Figure 1.1.
https://pandia.ru/text/80/230/images/image002_19.jpg "align =" left "width =" 394 "height =" 262 ">
7 - cover; 8 - axle box; 9 - additional pole coil; 10 - additional pole core; 11 - cover; 12 - coil of the main pole; 13 - core of the main pole; 14 - compensation winding; 15 - cover; 16 - removable bracket; 17 - safety tide; 18 - ventilation hatch.
Figure 1.2 - Transverse (b) section of the traction motor TL-2K1
Basic technical data of the TL-2K1 electric motor
The main technical data of the TL-2K1 traction motor are as follows:
Voltage at the motor terminals Uд = 1500 V;
Current at hourly mode Ich = 480 A;
Continuous current Idl = 410 A;
Power at hourly mode Rh = 670 kW;
Power in continuous operation Рдл = 575 kW;
Excitation - serial (traction mode); independent (regenerative braking mode);
Cooling - independent;
Rotation frequency (hourly mode) nh = 790 rpm;
Rotation frequency (continuous mode) ndl = 830 rpm;
Efficiency (hourly mode) hh = 0.931;
Efficiency (continuous mode) hdl = 0.93;
Insulation class: armature winding - B, excitation winding - F;
Gear ratio 88/23;
The mass of the engine without gears is m = 5000 kg.
Skeleton
The skeleton of the TL-2K1 traction motor is shown in Figure 1.3.
1 - additional pole; 2 - compensation winding coil; 3 - body; 4 - safety stop; 5 - main pole.
Figure 1.3 - The skeleton of the TL-2K1 traction motor
The skeleton is a cylindrical casting made of steel 25L-II, and simultaneously serves as a magnetic circuit. Six main and six additional poles are attached to it. Also attached to it is a swing beam, bearing shields with roller bearings, in which the engine armature rotates. From the outer surface, the frame has two lugs for attaching axleboxes of motor-axle bearings, a lug and a removable bracket for mounting the engine, safety lugs and lugs with holes for transportation.
On the side of the collector there are three hatches designed to inspect the brush and the collector. The cover of the upper collector hatch 7 is fixed on the frame with a special spring lock, the cover of the lower 15 - with one M20 bolt and a special bolt with a coil spring, and the cover of the second lower hatch 11 - with four M12 bolts.
There is a ventilation hatch for air supply. The outlet of the ventilation air is carried out from the side opposite to the collector, through a special casing 5, fixed on the end shield and the frame.
Outlets from the engine are made with a PMU-4000 cable with a cross section of 120 mm2. The cables are protected by tarpaulin covers with combined impregnation. The cables have labels made of PVC tubes with the designations I, YaYa, K and KK. The output cables I and YY are connected to the windings: armature, additional poles and with compensation, and the output cables K and KK are connected to the windings of the main poles.
The cores of the main poles 13 (see Fig. 1.1, b) are assembled from sheet electrical steel 0.5 mm thick, riveted and fixed to the frame with four M24 bolts each. The coil of the main pole 12, having 19 turns, is wound on an edge made of soft tape MGM copper with dimensions of 1.95X65 mm. Turn-to-turn insulation is made of asbestos paper in two layers 0.2 mm thick and impregnated with K-58 varnish.
To improve the performance of the motor, a compensation winding 14 is used, located in the grooves stamped in the lugs of the main poles, and connected in series with the armature winding. The compensation winding consists of six coils wound from a soft rectangular copper wire MGM with a cross section of 3.28X22 mm and has 10 turns.
The cores of the additional poles 10 are made of rolled plate or forged and are fixed on the frame with three bolts.
To reduce the saturation of the additional pole, brass spacers with a thickness of 7 mm are provided between the core and the core of the additional poles. Coils of additional poles 9 are wound on an edge made of soft copper wire MGM with a cross section of 6X20 mm and each have 10 turns.
The electrical connection diagram of the pole coils of the TL-2K1 traction motor is shown in Figure 1.4.
DIV_ADBLOCK14 ">
https://pandia.ru/text/80/230/images/image007_8.jpg "align =" left hspace = 12 "width =" 244 "height =" 207 "> The brush holder of the TL-2K1 traction motor is shown in Figure 1.6.
1 - helical spring; 2 - brush holder body; 3 - brush holder bracket; 4 - brush holder.
Figure 1.6 - Brush holder for traction motor TL-2K1
The brush holder has two cylindrical tension springs. The springs are fixed at one end on an axis inserted into the hole of the brush holder body, with the other on the axis of the pressure pin using an adjusting screw, which regulates the spring tension. The kinematics of the pressure mechanism is chosen so that in the working range it provides almost constant pressure on the brush. Two split brushes of the EG-61 brand with a size of 2 (8X50) X60 mm with rubber shock absorbers are inserted into the windows of the brush holder.
Fastening of the brush holders to the bracket is carried out with a stud and a nut. For more reliable fastening and for adjusting the position of the brush holder relative to the working surface in height when the collector is worn, a comb is provided on the brush holder body.
Anchor
The armature of the TL-2K1 traction motor is shown in Figure 1.7.
1 - collector plate; 2 - equalizing connection; 3 - collector body; 4 - anchor sleeve; 5 - anchor core; 6 - armature coil; 7 - thrust washer; 8 - shaft.
Figure 1.7 - Anchor of the traction motor TL-2K1
The anchor consists of a collector; winding embedded in the slots of the armature core, assembled into a package of electrical steel sheets; steel box bushing; front thrust washer; rear thrust washer.
The anchor consists of 75 coils 6 and 25 section equalizers 2, the ends of which are soldered into the collector cock. Each coil has 14 separate rods located in two rows in height, and seven conductors in a row, they are made of tape copper with a size of 0.9X8.0 mm of the MGM brand and are insulated with one layer with an overlap of half the width of the LPCH-BB mica tape 0.075 thick mm.
Sectional equalizers are made of three wires with a cross-section of 0.90X2.83 mm, grade PETVSD. The insulation of each wire consists of one layer of glass-mica tape LS1K-1Yutg 0.11X20 mm, one layer of electrically insulating fluoroplastic tape 0.03 mm thick and one layer of glass tape 0.11 mm thick. In the groove part, the armature winding is fastened with textolite wedges, and in the frontal part - with a glass band.
The traction motor manifold with a working surface diameter of 660 mm consists of 525 copper plates isolated from each other by micanite gaskets.
The armature winding has the following data: the number of slots - 75, the step along the slots - 1 - 13, the number of collector plates - 525, the step along the collector - 1–2, the step of the equalizers along the collector - 1 - 176.
The armature bearings of the heavy series engine with cylindrical rollers of the 8N42428M type provide an armature take-off in the range of 6.3-8.1 mm. The outer rings of the bearings are pressed into the bearing shields, and the inner rings are pressed onto the armature shaft.
The bearing chambers are sealed to prevent environmental influences and grease leakage. The end shields are pressed into the frame and each attached to it with eight M24 bolts with spring washers. Axle motor bearings consist of brass bushings, filled with B16 babbit on the inner surface, and axle boxes with a constant lubrication level. The axle boxes have a lubrication window. To prevent the bushings from turning, a keyed connection is provided in the axle box.
Traction electric motor TL-2K1
Purpose and technical data. DC traction motor TL-2K.1 (Fig. 30) is designed to convert electrical energy received from the contact network into mechanical energy. The torque from the engine armature shaft is transmitted to the wheelset through a double-sided single-stage cylindrical helical gear. With this transmission, the motor bearings do not receive additional loads in the axial direction.
Suspension of the electric motor is axial support. On the one hand, it is supported by motor-axial bearings on the axle of the wheelset of the electric locomotive, and on the other, on the bogie frame through the articulated suspension and rubber washers. The traction motor has a high power utilization factor (0.74) at the highest speed of the electric locomotive (Fig. 31).
The ventilation system is independent, axial, with the supply of ventilation air from above to the collector chamber and upward discharge from the opposite side along the axis of the engine (Fig. 32). The electric locomotive has eight traction motors. The technical data of the TL-2K1 engine are as follows:
Voltage at the motor terminals .... 1500 V
Hour mode current ................ 480 A
Hourly mode power ....... 670 kW
Rotation frequency of the hour mode,. , 790 rpm
Continuous duty current. ,. ... , 410 A
Continuous power ... 575 kW
Continuous speed, 830 rpm
Excitation. ...... consistent
Insulation class for and heat resistance of the winding
Anchors ............... B
Insulation class for thermal resistance of the pole system ............. F
The highest frequency of rotation with medium-worn tires ................ 1690 rpm
Suspension of the engine is support-axial
Gear ratio .......... 88 / 23-3,826
Resistance of the windings of the main poles at a temperature of 20 ° C ........ 0.025 Ohm
Resistance of the windings of the additional poles and of the compensation winding at a temperature of 20 ° C. 0.0356 "
Armature winding resistance at 20C --- 0.0317 Ohm
Design... The TL-2K1 traction motor consists of a skeleton 3 (Fig. 33), an anchor 6, a brush apparatus 2 and end shields 1, 4.
The skeleton (Fig. 34) of the engine is a cylindrical cast of steel grade 25L-P and simultaneously serves as a magnetic conductor. Attached to it are six main and six additional poles, a rotary traverse with six brush holders and shields with roller bearings in which the motor armature rotates.
The installation of the bearing shields into the motor frame is carried out in the following sequence: the assembled frame with pole and compensation coils is placed with the side opposite to the collector facing up. An induction heater is used to heat the neck to a temperature of 100-150 ° C, insert and fix the shield with eight M24 bolts made of 45 steel.Then the frame is turned 180 °, the anchor is lowered, the traverse is installed, and another shield is inserted in the same way as described above and fastened with eight M24 bolts. From the outer surface, the frame has two lugs for attaching axleboxes of motor-axle bearings, a lug and a removable bracket for hanging the engine, safety lugs and lugs for transportation. On the side of the collector there are three hatches intended for inspection of the brush apparatus and the collector. The hatches are hermetically closed with covers 7, I, 15 (see Fig. 33).
The cover 7 of the upper manifold hatch is fixed on the frame with a special spring lock, the cover 15 of the lower hatch - with one M20 bolt and a special bolt with a coil spring, and the cover 11 of the second lower hatch - with four M12 bolts.
There is a ventilation hatch 18 for air supply. The ventilation air outlet is carried out from the side opposite to the collector, through a special casing 5, fixed on the bearing shield and the frame. Outlets from the engine are made with a PMU-4000 cable with a cross-sectional area of 120 mm2. The cables are protected by tarpaulin covers with combined impregnation. On the cables there are labels made of polychlorinated vinyl tubes t with the designation Я, ЯЯ, К and КК. The output cables I and YaYa (Fig. 35) are connected to the armature windings, additional poles and to the compensation one, and the output cables K and KK are connected to the windings of the main poles.
The cores of the main poles 13 (see Fig. 33) are made of sheet electrical steel grade 1312 with a thickness of 0.5 mm, riveted and fixed to the frame with four M24 bolts each. There is one 0.5 mm thick steel spacer between the main pole core and the core. The main pole coil 12, having 19 turns, is wound on a rib made of JIMM soft tape copper with dimensions 1.95XX65 mm, bent along the radius to ensure adherence to the inner surface of the core.
To improve the performance of the motor, a compensation winding 14 is used, located in the grooves stamped in the lugs of the main poles, and connected in series with the armature winding. The compensating winding consists of six coils, wound from a soft rectangular copper wire PMM measuring 3.28X22 mm, and has 10 turns. Each groove has two turns. Hull insulation consists of six layers of glass-mica tape LSEK-5-SPL 0.1i mm thick GOST 13184-78, one layer of fluoroplastic tape 0.03 mm thick and one layer of glass tape LES 0.1 mm thick, laid with an overlap of half the width of the tape ... Coiled insulation has one layer of glass-mica tape of the same grade, it is laid with an overlap of half the width of the tape. The compensating winding in the grooves is fixed with wedges made of textolite grade B. The insulation of the compensating coils at TEVZ is baked in fixtures, at NEVZ - in the frame.
The cores of the additional poles 10 are made of rolled plate or forged and fixed on the frame with three M20 bolts. To reduce the saturation of the additional poles, diamagnetic spacers with a thickness of 8 mm are provided between the core and the cores of the additional poles. Coils of additional poles 9 are wound on an edge made of soft copper wire PMM with dimensions of 6x20 mm and each have 10 turns. The body and cover insulation of these coils is similar to that of the main pole coils. Turn-to-turn insulation consists of 0.5 mm thick asbestos gaskets impregnated with varnish KO-919 GOST 16508-70.
The Novocherkassk Electric Locomotive Plant manufactures the TL-2K1 traction motor, the pole system (coils of the main and additional poles) of which is made on the insulation of the "Monolit 2" system. Body insulation of coils. made of glass-mica tape 0.13X25 mm LS40Ru-TT, the coils are impregnated in the EMT-1 or EMT-2 epoxy compound according to TU OTN.504.002-73, and the coils of the additional poles are impregnated together with the cores and represent a one-piece monoblock. A 10 mm thick diamagnetic gasket is attached to the monoblock, which simultaneously serves to secure the coil. The coil of the main pole is sealed against movements on the core by two wedges in spaced along the frontal parts.
The brush apparatus of the traction motor (Fig. 36) consists of a split-type traverse with a rotary mechanism, six brackets 3 and six brush holders 4.
The traverse is steel, the casting of the channel section has a toothed rim on the outer rim, which engages with gear 2 (Fig. 37) of the rotary mechanism. In the frame, the traverse of the brush apparatus is fixed and locked with a retainer bolt 3, installed on the outer wall of the upper collector hatch, and pressed to the end shield by two bolts of the locking device 1: one is at the bottom of the frame, the other is from the suspension side. The electrical connection of the traverse brackets to each other is made with PS-4000 cables with a cross-sectional area of 50 mm2. The brackets of the brush holder are detachable (of two halves), fixed with M20 bolts on two insulating pins 2 (see Fig. 36), installed on the traverse. Steel pins of the fingers are pressed with AG-4V press compound, porcelain insulators are mounted on them.
The brush holder (Fig. 38) has two coil springs /, working in tension. The springs are fixed at one end on an axis inserted into the hole in the housing 2 of the brush holder, with the other on the axis of the pressure pin 4 by means of a screw 5, which regulates the tension of the spring. The kinematics of the pressure mechanism is chosen so that in the working range it provides an almost constant pressure on the brush 3. In addition, at the greatest permissible wear of the brush, the pressure of the finger 4 on the brush is automatically stopped. This prevents damage to the working surface of the collector by flexible wires of the worked brushes. Two split brushes of the EG-61 brand with dimensions of 2 (8X50XX60) mm with rubber shock absorbers are inserted into the windows of the brush holder. Fastening of the brush holders to the bracket is carried out with a stud and a nut. For more reliable fastening and adjustment of the position of the brush holder relative to the working surface in height during wear of the collector, combs are provided on the body of the brush holder and the bracket.
The armature (Fig. 39, 40) of the engine consists of a collector, a winding embedded in the grooves of the core 5 (see Fig. 39), assembled in a package of varnished sheets of electrical steel grade 1312 0.5 mm thick, steel sleeve 4, rear 7 and front 3 thrust washers, shaft 8. The core has one row of axial holes for the passage of ventilation air. The front thrust washer 3 at the same time serves as a collector body.All parts of the armature are assembled on a common box-shaped bushing 4 pressed onto the armature shaft 5, which makes it possible to replace it.
The armature has 75 coils b and 25 sectional equalizing joints 2. The connection of the ends of the winding and wedges with the collector plate cocks / made with solder PSR-2.5 GOST 19738-74 on a special installation with high-frequency currents.
Each coil has 14 individual conductors arranged in two rows in height, and seven conductors per row. They are made of copper tape 0.9x8.0 mm in size L MM and insulated with one layer with an overlap in half the width of glass-mica tape LSEK-5-SPl 0.09 mm thick GOST 13184-78. Each package of seven conductors is also insulated with a glass-mica tape LSEK-5-SPL 0.09 mm thick with an overlap in half the width of the tape. NEVZ manufactures anchor coils from insulated PETVSD wire with dimensions of 0.9X7.1 mm without additional application of coil insulation. The body insulation of the slotted part of the coil consists of six layers of glass-mica tape LSEK-5-SPL with dimensions of 0.1X20 mm, one layer of fluoroplastic tape 0.03 mm thick and one layer of glass tape LES 0.1 mm thick, laid with an overlap of half the width of the tape.
Sectional equalizers are made of three wires 1X2.8 mm in size PETVSD. The insulation of each wire consists of one layer of glass-mica tape LSEK-5-SGTl with dimensions of 0.1X20 mm and one layer of fluoroplastic tape 0.03 mm thick. All insulation is installed with an overlap of half the width of the tape. Insulated wires are connected into a section with one layer of glass tape, laid with an overlap in half the width of the tape. In the groove part, the armature winding is fastened with textolite wedges, and in the frontal part with glass band.
The engine manifold with a working surface diameter of 660 mm is made up of copper plates isolated from each other by micanite gaskets. The manifold is isolated from the pressure cone and the body by micanite cuffs and a cylinder.
The armature winding has the following data: the number of grooves 75, the step along the slots 1-13, the number of collector plates 525, the step along the collector 1-2, the step of the equalizers along the collector 1 -176.
The armature bearings of a heavy series engine with cylindrical rollers of the 80-42428M type provide an armature take-off in the range of 6.3-8.1 mm. The outer rings of the bearings are pressed into the bearing shields, and the inner ones are pressed onto the armature shaft. The bearing chambers are sealed to prevent environmental influences and grease leakage (fig. 41). Motor-axle bearings consist of brass bushings filled with B16 babbit GOST 1320-74 on the inner surface, and axle boxes with a constant lubrication level. The axle boxes have a lubrication window. To prevent the bushings from turning, a keyed connection is provided in the axle box.
TECHNICAL INFORMATION
"Regional Center for Innovative Technologies"
Traction electric motor TL-2K1
Purpose and technical data.
The TL-2K1 DC traction electric motor (Fig. 1) is designed to convert electrical energy received from the contact network into mechanical energy. The torque from the engine armature shaft is transmitted to the wheelset through a double-sided single-stage cylindrical helical gear. With this transmission, the motor bearings do not receive additional loads in the axial direction.
1 - special nut with a spring washer; 2 - armature shaft; 3 - tube for anchor bearings lubrication;
4 - cover of the upper inspection hatch; 5, 6 - large and small exhaust casings;
7, 8 - axle box and thrust bearing shell; 9 - lower inspection hatches
Suspension of the electric motor is axial support. On the one hand, it is supported by motor-axial bearings on the axle of the wheelset of the electric locomotive, and on the other, on the bogie frame through the articulated suspension and rubber washers. The traction motor has a high power utilization factor (0.74) at the highest speed of the electric locomotive (Fig. 2).
Figure 2. Electrochemical characteristics
traction electric motor TL-2K1 at U d ≈ 100V
The ventilation system is independent, axial, with the supply of ventilation air from above to the collector chamber and upward discharge from the opposite side along the engine axis (Fig. 3). The electric locomotive has eight traction motors.
The technical data of the TL-2K1 engine are as follows:
| Motor terminal voltage | 1500 V |
| Hour mode current | 480 A |
| Hour mode power | 670 kW |
| Clock speed | 790 rpm |
| Continuous current | 410 A |
| Continuous power | 575 kW |
| Continuous speed | 830 rpm |
| Excitation | consistent |
| Insulation class for and heat resistance of the armature winding | V |
| Insulation class for thermal resistance of the pole system | F |
| The highest rotational speed with moderately worn tires | 1690 rpm |
| Suspension of the engine | axial support |
| Ratio | 88/23 - 3,826 |
| Resistance of the windings of the main poles at a temperature of 20 ° C | 0.025 Ohm |
| Resistance of windings of additional poles and compensation winding at a temperature of 20 ° С | 0.0356 Ohm |
| Armature winding resistance at 20 ° C | 0.0317 Ohm |
Design.
The TL-2K1 traction motor consists of a frame 3 (Fig. 4), an anchor 6, a brush apparatus 2 and end shields 1, 4.
Figure 4. Longitudinal (a) and transverse (b) sections of the TL-2K1 traction motor.
1, 4 - bearing shields; 2 - brush apparatus; 3 - skeleton; 5 - casing; 6- anchor;
7, 11, 15 - covers; 8 - axle box; 9, 10 - coil and core of an additional pole;
12, 13 - coil and core of the main pole; 14 - compensation winding;
16- removable bracket; 17 - safety tide; 18 - ventilation hatch
The skeleton (Fig. 5) of the engine is a cylindrical cast of steel grade 25L-P and simultaneously serves as a magnetic circuit. Attached to it are six main and six additional poles, a rotary traverse with six brush holders and shields with roller bearings in which the motor armature rotates.
1 - additional pole; 2 - compensation winding coil;
3 - case; 4 - safety tide; 5 - main pole
The installation of the bearing shields in the motor frame is carried out in the following sequence: the assembled frame with pole and compensation coils is placed with the side opposite to the collector facing up. An induction heater is used to heat the neck to a temperature of 100-150 ° C, insert and fix the shield with eight M24 bolts made of 45 steel.Then the frame is turned 180 °, the anchor is lowered, the traverse is installed, and another shield is inserted in the same way as described above and fastened with eight M24 bolts. From the outer surface, the frame has two lugs for attaching axleboxes of motor-axle bearings, a lug and a removable bracket for hanging the engine, safety lugs and lugs for transportation. On the side of the collector, there are three hatches designed to inspect the brush set and the collector. The hatches are hermetically closed with covers 7, 11, 15 (see Fig. 4).
The cover 7 of the upper manifold hatch is fixed on the frame with a special spring lock, the cover 15 of the lower hatch - with one M20 bolt and a special bolt with a coil spring, and the cover 11 of the second lower hatch - with four M12 bolts.
There is a ventilation hatch 18 for air supply. The ventilation air outlet is carried out from the side opposite to the collector through a special casing 5, fixed on the bearing shield and the frame. Outlets from the engine are made with a PMU-4000 cable with a cross-sectional area of 120 mm2. The cables are protected by tarpaulin covers with combined impregnation. On the cables there are labels made of polychlorinated vinyl tubes t with the designation Я, ЯЯ, К and КК. Lead-out cables I and YaYa (Fig. 6) are connected to the armature windings, additional poles and with compensation, and the lead-out cables K and KK are connected to the windings of the main poles.
Figure 6. Schemes of connection of the coils of poles from the collector side (a)
and opposite (b) traction motor TL-2K1
The cores of the main poles 13 (see Fig. 4) are made of sheet electrical steel grade 1312 with a thickness of 0.5 mm, riveted and fixed to the frame with four M24 bolts each. There is one 0.5 mm thick steel spacer between the main pole core and the core. The main pole coil 12, having 19 turns, is wound on a rib made of JIMM soft tape copper with dimensions 1.95XX65 mm, bent along the radius to ensure adherence to the inner surface of the core.
To improve the performance of the motor, a compensation winding 14 is used, located in the grooves stamped in the lugs of the main poles, and connected in series with the armature winding. The compensating winding consists of six coils, wound from a soft rectangular copper wire PMM measuring 3.28X22 mm, and has 10 turns. Each groove has two turns. Hull insulation consists of six layers of glass-mica tape LSEK-5-SPL 0.1i mm thick GOST 13184-78, one layer of fluoroplastic tape 0.03 mm thick and one layer of glass tape LES 0.1 mm thick, laid with an overlap of half the width of the tape ... Coiled insulation has one layer of glass-mica tape of the same grade, it is laid with an overlap of half the width of the tape. The compensating winding in the grooves is fixed with wedges made of textolite grade B. The insulation of the compensating coils at TEVZ is baked in fixtures, at NEVZ - in the frame.
The cores of the additional poles 10 are made of rolled plate or forged and fixed on the frame with three M20 bolts. To reduce the saturation of the additional poles, diamagnetic spacers with a thickness of 8 mm are provided between the core and the cores of the additional poles. Coils of additional poles 9 are wound on an edge made of soft copper wire PMM with dimensions of 6x20 mm and each have 10 turns. The body and cover insulation of these coils is similar to that of the main pole coils. Turn-to-turn insulation consists of 0.5 mm thick asbestos gaskets impregnated with varnish KO-919 GOST 16508-70.
The Novocherkassk Electric Locomotive Plant manufactures the TL-2K1 traction motor, the pole system (coils of the main and additional poles) of which is made on the insulation of the "Monolit 2" system. Body insulation of coils. made of glass-mica tape 0.13X25 mm LS40Ru-TT, the coils are impregnated in the EMT-1 or EMT-2 epoxy compound according to TU OTN.504.002-73, and the coils of the additional poles are impregnated together with the cores and represent a one-piece monoblock. A 10 mm thick diamagnetic gasket is attached to the monoblock, which simultaneously serves to secure the coil. The coil of the main pole is sealed against movements on the core by two wedges in spaced along the frontal parts.
The brush apparatus of the traction motor (Fig. 7) consists of a split-type traverse with a rotary mechanism, six brackets 3 and six brush holders 4.
The traverse is steel, the casting of the channel section has a toothed rim along the outer rim, which engages with gear 2 (Fig. 8) of the rotary mechanism. In the frame, the traverse of the brush apparatus is fixed and locked with a retainer bolt 3, installed on the outer wall of the upper collector hatch, and pressed to the end shield by two bolts of the locking device 1: one is at the bottom of the frame, the other is from the suspension side. The electrical connection of the traverse brackets to each other is made with PS-4000 cables with a cross-sectional area of 50 mm2. The brackets of the brush holder are detachable (of two halves), fixed with M20 bolts on two insulating pins 2 (see Fig. 7) installed on the traverse. Steel pins of the fingers are pressed with AG-4V press compound, porcelain insulators are mounted on them.
Figure 8. Locking and fixing the traverse of the TL-2K1 traction motor
The brush holder (fig. 9) has two cylindrical tension springs. The springs are fixed at one end on an axis inserted into the hole in the housing 2 of the brush holder, with the other on the axis of the pressure pin 4 by means of a screw 5, which regulates the tension of the spring. The kinematics of the pressing mechanism is chosen so that in the working range it provides almost constant pressing on the brush 3. In addition, at the greatest permissible wear of the brush, pressing the finger 4 on the brush automatically stops. This prevents damage to the working surface of the collector by flexible wires of the worked brushes. Two split brushes of the EG-61 brand with dimensions of 2 (8X50XX60) mm with rubber shock absorbers are inserted into the windows of the brush holder. Fastening of the brush holders to the bracket is carried out with a stud and a nut. For more reliable fastening and adjustment of the position of the brush holder relative to the working surface in height when the collector is worn, combs are provided on the body of the brush holder and the bracket.
The armature (Fig. 10, 11) of the engine consists of a collector, a winding embedded in the grooves of the core 5 (see Fig. 10), assembled in a package of varnished sheets of electrical steel grade 1312 0.5 mm thick, steel sleeve 4, rear 7 and front 3 thrust washers, shaft 8. The core has one row of axial holes for the passage of ventilation air. The front thrust washer 3 at the same time serves as a collector body.All parts of the armature are assembled on a common box-shaped bushing 4 pressed onto the armature shaft 5, which makes it possible to replace it.
The armature has 75 coils b and 25 sectional equalizing joints 2. The connection of the ends of the winding and wedges with the collector plate cocks / made with solder PSR-2.5 GOST 19738-74 on a special installation with high-frequency currents.
Figure 11. Connection diagram of the armature coils and equalizers
with collector plates of the traction motor TL-2K1
Each coil has 14 individual conductors arranged in two rows in height, and seven conductors per row. They are made of copper tape 0.9x8.0 mm in size L MM and insulated with one layer with an overlap in half the width of glass-mica tape LSEK-5-SPl 0.09 mm thick GOST 13184-78. Each package of seven conductors is also insulated with a glass-mica tape LSEK-5-SPL 0.09 mm thick with an overlap in half the width of the tape. NEVZ manufactures anchor coils from insulated PETVSD wire with dimensions of 0.9X7.1 mm without additional application of coil insulation. The body insulation of the slotted part of the coil consists of six layers of glass-mica tape LSEK-5-SPL with dimensions of 0.1X20 mm, one layer of fluoroplastic tape 0.03 mm thick and one layer of glass tape LES 0.1 mm thick, laid with an overlap of half the width of the tape.
Sectional equalizers are made of three wires 1X2.8 mm in size PETVSD. The insulation of each wire consists of one layer of glass-mica tape LSEK-5-SGTl with dimensions of 0.1X20 mm and one layer of fluoroplastic tape 0.03 mm thick. All insulation is installed with an overlap of half the width of the tape. Insulated wires are connected into a section with one layer of glass tape, laid with an overlap in half the width of the tape. In the groove part, the armature winding is fastened with textolite wedges, and in the frontal part with glass band.
The engine manifold with a working surface diameter of 660 mm is made up of copper plates isolated from each other by micanite gaskets. The manifold is isolated from the pressure cone and the body by micanite cuffs and a cylinder.
The armature winding has the following data: the number of grooves is 75, the pitch along the grooves is 1-13, the number of collector plates is 525, the pitch along the collector is 1-2, the pitch of the equalizers along the collector is 1-176.
Figure 12. Armature bearing seals and supply
to them lubricants of the traction electric motor TL-2K1
The armature bearings of a heavy series engine with cylindrical rollers of the 80-42428M type provide an armature take-off in the range of 6.3-8.1 mm. The outer rings of the bearings are pressed into the bearing shields, and the inner ones are pressed onto the armature shaft. The bearing chambers are sealed to prevent environmental influences and grease leakage (fig. 12). Motor-axle bearings consist of brass bushings filled with B16 babbit GOST 1320-74 on the inner surface, and axle boxes with a constant lubrication level. The axle boxes have a lubrication window. To prevent the bushings from turning, a keyed connection is provided in the axle box.
Traction electric motor TL-2K1