CN208291235U - A kind of gauge-changeable bogie crankcase cover positioning centering body - Google Patents
A kind of gauge-changeable bogie crankcase cover positioning centering body Download PDFInfo
- Publication number
- CN208291235U CN208291235U CN201820698569.3U CN201820698569U CN208291235U CN 208291235 U CN208291235 U CN 208291235U CN 201820698569 U CN201820698569 U CN 201820698569U CN 208291235 U CN208291235 U CN 208291235U
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- CN
- China
- Prior art keywords
- centering
- end cap
- gauge
- positioning
- mounting base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F7/00—Rail vehicles equipped for use on tracks of different width
Abstract
The utility model discloses a kind of gauge-changeable bogie crankcase covers to position centering body, including positioning centering end cap mounting base, position centering end cap, centering roll wheel assembly, there are four end cap U-lags for system on the crankcase cover positioning centering body, the positioning centering end cap mounting base is bolted the lock tube of retaining mechanism by positioning centering end cap mounting base mounting hole and the wheel, have in the positioning centering end cap mounting base for installing threaded hole with the positioning centering end cap of positioning centering end cap installation, the centering roll wheel assembly is installed on the positioning centering end cap, the centering roll wheel assembly rolls on matched gauge changing driving rail, the crankcase cover positioning centering body is for the located lateral centering during gauge changing, a kind of gauge-changeable bogie gauge changing device suitable for end face drive-type.
Description
Technical field
The utility model belongs to bogie systems technology field, is related to gauge changing technology, and in particular to a kind of change rail
Centering body is positioned away from truck journal box end cap.
Background technique
With the mushroom development of Silk Road economy-zone, China and various countries along the line carry out wider, higher level, deeper
The regional cooperation of level is dedicated to constructing the comprehensive network that interconnects, and wherein railway transportation has become Asia-Europe main road most
One of main land-borne trade channel, but the railway of the different gauge specifications in country variant and area is to the development of international combined transport
Bring many restrictions.
For the railway of different gauges, it is dedicated to studying a kind of gauge-changeable bogie both at home and abroad, is turned by changing gauge changing
The railway of different gauges is adapted to the wheel of frame wheelspan.It takes turns during gauge changing and is disengaged to unloading, and with rail, turned
To frame can not automatic centering, while the vertical unevenness of the mating track of ground gauge changing and wheel cause to by reasons such as lateral forces
Bogie is to side deflection.
Summary of the invention
To solve the above problems, the utility model proposes a kind of gauge-changeable bogie crankcase covers to position centering body, institute
Crankcase cover positioning centering body is stated to include positioning centering end cap mounting base 16, position centering end cap 17, centering roll wheel assembly 18,
There are four end cap U-lag 16-1, the positioning centering end cap mounting base 16 to pass through for system on the crankcase cover positioning centering body
Positioning centering end cap mounting base mounting hole 16-2 is bolted the lock tube 9 of retaining mechanism with the wheel, and the positioning is to middle-end
There is the positioning centering end cap for installing with positioning centering end cap 17 that threaded hole 16-3, the centering rolling are installed in lid mounting base 16
Wheel assembly 18 is installed on the positioning centering end cap 17, and the centering roll wheel assembly 18 drives in matched ground gauge changing
It is rolled on rail, the crankcase cover positioning centering body is for the positioning centering during gauge changing.
It is described positioning centering end cap mounting base 16 end cap U-lag 16-1 respectively with locking arm 5,6 clearance fit of actuating arm,
The locking arm 5, actuating arm 6 slide axially in end cap U-lag 16-1 along axle.
It is formed with centering idler wheel mounting base 17-1 on the positioning centering end cap 17, is made on the centering idler wheel mounting base 17-1
There is vertical centering idler wheel axis hole 17-2, the positioning centering end cap 17 is installed on institute by positioning centering end cap installing hole 17-3
It states in positioning centering end cap mounting base 16.
The centering roll wheel assembly 18 includes roller shaft, bearing and idler wheel, and the centering roll wheel assembly 18 is matched
It is rolled on ground centering rail, guarantees the positioning centering of axle and gauge-changeable bogie during gauge changing.
The idler wheel is elastic roller, and elastic roller has mute antiwear characteristic, the preferably encapsulated processing of idler wheel.
The beneficial effects of the utility model
Crankcase cover positioning centering body described in the utility model is used for the axially position centering of axle when gauge changing, is applicable in
In a kind of gauge-changeable bogie gauge changing device of end face drive-type, have the advantage that
(1) it solves the problems, such as the positioning centering of bogie during gauge changing, guarantees that locking member can be locked accurately after becoming rail；
(2) improve gauge-changeable bogie wheel to lateral stress condition, guarantee lateral force along vehicle using end cap centering mode
Axis axle center, so as to avoid additional bending moment effect.
(3) rolling friction between the crankcase cover positioning centering body and ground gauge changing corollary apparatus, wears smaller.
Detailed description of the invention
Fig. 1 is axle part drawing, and Fig. 2 is shaft sleeve parts figure, and Fig. 3 is sliding sleeve part drawing, and Fig. 4 is driving sliding sleeve part drawing,
Fig. 5 is locking arm part drawing, and Fig. 6 is actuating arm part drawing, and Fig. 7 is end face driving mechanism installation diagram；
Fig. 8 is lower part axle box base part figure, and Fig. 9 is axle box installation diagram；
Figure 10 is lock tube figure one, and Figure 11 is lock tube figure two, and Figure 12 is key part drawing, and Figure 13 is guiding axis part drawing, figure
14 be wheel to retaining mechanism part assembly drawing, and Figure 15 is that wheel assembles total figure to retaining mechanism；
Figure 16 is wheel to retaining mechanism and end face driving mechanism schematic diagram, and Figure 17 is wheel to retaining mechanism and end face driving machine
Structure installation diagram；
Figure 18 is positioning centering end cap mounting base part drawing, and Figure 19 is positioning centering end cap part drawing, and Figure 20 is axle box end
Lid positioning centering body installation diagram；
Figure 21 is that a kind of gauge-changeable bogie gauge changing device of end face drive-type assembles total figure.
Figure 22 is the utility model ground gauge changing corollary apparatus schematic diagram one.
Figure 23 is the utility model ground gauge changing corollary apparatus schematic diagram two.
Corresponding title is marked in attached drawing are as follows:
1. axle, 1-1. axle sleeve matching spline, 1-2. axle sleeve wheel one installation place, 2. axle sleeves, 2-1. wheel mounting base,
2-2. bearing sliding bush one mounting base, 2-3. axle Pei close Hua Jian Grains, 3. sliding sleeves, and the end face 3-1. drive-type sliding sleeve installs screw thread
Hole, 4. driving sliding sleeves, 4-1. driving sliding sleeve mounting hole, 4-2. locking arm installation threaded hole, 4-3. actuating arm installation threaded hole, 5.
Locking arm, 5-1. locking slot, 6. actuating arms, 6-1. drive roll wheel assembly mounting hole, 7. driving roll wheel assemblies, 8. axle boxes, 8-1.
Top axle box cover, the lower part 8-2. axle box pedestal, 8-2-1. end cap lock limited block, and 8-2-2. end cap locks pilot hole, 8-3.
End cap lock tube installs threaded hole, 9. lock tubes, 9-1. lock tube mounting hole, 9-2. guide hole, 9-3. key slot, 9-4. key lid installation spiral shell
Pit, 10. key lids, 11. keys, 11-1. closing piece, 12. unlock guiding axis, 12-1. unlock guiding shaft, 12-2. unlock rolling
Wheel seat, 13. trapezoidal hammerlocks, 14. locking springs, 15. unlock roll wheel assemblies, 16. positioning centering end cap mounting bases, 16-1. end cap U
Shape slot, 16-2. position centering end cap mounting base mounting hole, and 16-3. positions centering end cap and installs threaded hole, and 17. positioning are to middle-end
Lid, 17-1. centering idler wheel mounting base, 17-2. centering idler wheel axis hole, 17-3. position centering end cap installing hole, 18. centering idler wheels
Component, 19. sleepers, 20. standard-gauge rails, 21. back-up roller wheel groups, 22. unlock rails, 23. mounting brackets, 24. gauge changings drive
Dynamic rail, 25. centering rails, 26. broad gage rail.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples, it should be understood that retouches in this place
The specific embodiment stated only to explain the utility model, is not used to limit the utility model.
Mechanism described in the utility model is suitable for a kind of gauge-changeable bogie gauge changing device of end face drive-type, a kind of
The gauge-changeable bogie gauge changing device of end face drive-type is by axle box, end face driving mechanism, wheel to retaining mechanism, crankcase cover
Positioning centering body is assembled, and the end face driving mechanism is installed on axle sleeve by tapered roller bearing component, is being carried out
When gauge changing, wheel can integrally slide axially on axle with axle sleeve with the end face driving mechanism, reach gauge changing
Purpose；Following embodiment is based on existing gauge-changeable bogie, the knot such as the axle 1, axle sleeve 2 and axle-box locating mode
Structure is identical as existing gauge-changeable bogie, and details are not described herein, and following embodiment is only described in detail the utility model and is made
Improvement.
As shown in Fig. 1-2 1, specific embodiment is described below.
1 Upper shaft sleeve matching spline 1-1 of axle cooperates with axle on axle sleeve with flower key Grains 2-3 is closed, and is realized by spline
The transmission of power, axle Upper shaft sleeve wheel one installation place 1-2 are used for the installation of axle sleeve 2, and wheel is installed on the wheel on axle sleeve 2
On mounting base 2-1, wheel and axle sleeve 2 can relative to axle together with move axially.
A kind of gauge-changeable bogie gauge changing device of end face drive-type, including axle box, end face driving mechanism, wheel are to lock
Tight mechanism, crankcase cover position centering body；The axle box is connected by single stage suspension with bogie frame, and the wheel is to locking
Mechanism is installed on axle box end face by bolt, and the crankcase cover positioning centering body is installed on wheel to locking machine by bolt
On the end face of structure, the end face driving mechanism is located inside axle box, the end face driving mechanism and respectively with wheel to retaining mechanism,
The corresponding recesses clearance fit of crankcase cover positioning centering body.
The end face driving mechanism includes sliding sleeve 3, driving sliding sleeve 4, locking arm 5, actuating arm 6, driving roll wheel assembly 7, institute
It states driving sliding sleeve 4 to be installed on sliding sleeve 3 by bolt, each on the end face of the driving sliding sleeve 4 there are two locking arms to install screw thread
Hole 4-2, actuating arm install threaded hole 4-3, and the locking arm 5 is installed in locking arm installation threaded hole 4-2, the actuating arm 6
It is installed in actuating arm installation threaded hole 4-3；The driving roll wheel assembly 7 is installed on the actuating arm 6, the driving idler wheel
Component 7 rolls on matched ground gauge changing driving rail, to realize change of the wheel to wheelspan.
The sliding sleeve 3 is installed on the bearing sliding bush one mounting base 2-2 of the axle sleeve 2 by tapered roller bearing component
On, the driving sliding sleeve 4 is installed on sliding sleeve 3 by bolt, and the driving sliding sleeve 4 carries out the tapered roller bearing component
Located lateral, the driving sliding sleeve 4 can be slided relative to axle 1 along axial one with sliding sleeve 3, axle sleeve 2, wheel etc..
Two locking arms installation threaded hole 4-2 on the driving sliding sleeve 4 is located at horizontal direction, on the driving sliding sleeve 4
Two actuating arms installation threaded hole 4-3 be located at vertical direction.
The locking arm 5 is installed in threaded hole 4-2 by the locking arm that screw thread is installed on driving sliding sleeve 4, and carries out screw thread
Connection anti-loose processing, it is preferable that using locked spacer or the locking mode of bonding；It is machined with locking slot 5-1 on the locking arm 5,
The locking slot 5-1's is preferably shaped to semi-circular groove, the separation of locking slot 5-1 phase at a distance from gauge changing
Match.
The actuating arm 6 is installed in threaded hole 4-3 by the actuating arm that screw thread is installed on driving sliding sleeve 4, and carries out screw thread
Connection anti-loose processing, it is preferable that using locked spacer or the locking mode of bonding；Vertical driving is machined on the actuating arm 6
Roll wheel assembly mounting hole 6-1, the driving roll wheel assembly 7 are installed in the driving roll wheel assembly mounting hole 6-1.
The driving roll wheel assembly 7 includes roller shaft, bearing and idler wheel, and the driving roll wheel assembly 7 is matchedly
It is rolled on face gauge changing driving rail, drives the sliding sleeve under the thrust or pulling force effect of matched ground gauge changing driving rail
3, sliding sleeve 4, locking arm 5, actuating arm 6 is driven to slide axially along axle, to realize change of the wheel to wheelspan.
The axle box includes top axle box cover 8-1 and lower part axle box pedestal 8-2, passes through single stage suspension and bogie frame phase
Even, the axle box end face, which has, installs threaded hole 8-3, the end of lower part axle box pedestal to the end cap lock tube of retaining mechanism installation for taking turns
Face is machined with end cap locking limited block 8-2-1, and an end cap locking guiding is provided on the end cap locking limited block 8-2-1
Hole 8-2-2, the end cap locking pilot hole 8-2-2 is for vertical guiding and circumferential limit.
The wheel includes lock tube 9, key lid 10, key 11, unlock guiding axis 12, trapezoidal hammerlock 13, lock to retaining mechanism
Tight spring 14, unlock roll wheel assembly 15；Guide hole 9-2 and key slot 9-3, the shape of the guide hole 9-2 are machined on the lock tube 9
Match respectively with the locking arm 5, actuating arm 6；There is lock tube mounting hole 9-1 on the lock tube 9, will be taken turns to locking by bolt
Mechanism is installed on axle box end face；The key lid 10 is installed on the key lid on the lock tube 9 by bolt and installs threaded hole
In 9-4；Closing piece 11-1, the locking slot 5-1 shape in the shape of the closing piece 11-1 and the locking arm 5 are formed on the key 11
Shape matches, and the closing piece 11-1 is extend into the end cap key slot 9-3；The unlock guiding axis 12 is by unlock guiding axis
Bar 12-1 and unlock roller mount 12-2 are welded, and the unlock guiding shaft 12-1 and the end cap lock pilot hole 8-2-2
Clearance fit, the wheel is to retaining mechanism for the unlock and locking during gauge changing.
The locking arm 5 of the end face driving mechanism, actuating arm 6 are respectively with the wheel to the gap guide hole 9-2 of retaining mechanism
Cooperate, guiding role of the guide hole 9-2 for end face driving mechanism axial movement during displacement, in the guide hole 9-2
It is also equipped with sealing ring and snap ring, the sealing ring and snap ring are for preventing the booties such as external dust, fine particle from entering axle box.
There are two the key 11 is total, described two keys 11 are located at end cap key slot 9-3 and key lid 10 assembles
At hole in, described two keys 11 can vertical sliding in the hole；Described two keys 11 are respectively fixedly connected in described trapezoidal
The both ends of hammerlock 13, trapezoidal 13 lower end of hammerlock and unlock guiding axis 12 are connected.The closing piece 11-1's is preferably shaped to half
It is round.
The shape of the unlock guiding shaft 12-1 and the shape of end cap locking pilot hole 8-2-2 match, described
Unlock guiding shaft 12-1 vertical can only be slided in end cap locking pilot hole 8-2-2.
The crankcase cover positioning centering body includes positioning centering end cap mounting base 16, positioning centering end cap 17, centering
Roll wheel assembly 18, the crankcase cover positions system on centering body, and there are four end cap U-lag 16-1, the positioning centering end cap peaces
Dress seat 16 is bolted the lock tube 9 of retaining mechanism by positioning centering end cap mounting base mounting hole 16-2 and the wheel, described
There is the positioning centering end cap for installing with positioning centering end cap 17 that threaded hole 16-3 is installed in positioning centering end cap mounting base 16,
The centering roll wheel assembly 18 is installed on the positioning centering end cap 17, and the centering roll wheel assembly 18 is on matched ground
It is rolled on gauge changing driving rail, the crankcase cover positioning centering body is for the positioning centering during gauge changing.
It is described positioning centering end cap mounting base 16 end cap U-lag 16-1 respectively with locking arm 5,6 clearance fit of actuating arm,
The locking arm 5, actuating arm 6 slide axially in end cap U-lag 16-1 along axle.
It is formed with centering idler wheel mounting base 17-1 on the positioning centering end cap 17, is made on the centering idler wheel mounting base 17-1
There is vertical centering idler wheel axis hole 17-2, the positioning centering end cap 17 is installed on institute by positioning centering end cap installing hole 17-3
It states in positioning centering end cap mounting base 16.
The centering roll wheel assembly 18 includes roller shaft, bearing and idler wheel, and the centering roll wheel assembly 18 is matched
It is rolled on ground centering rail, guarantees the positioning centering of axle and gauge-changeable bogie during gauge changing.
The idler wheel is elastic roller, and elastic roller has mute antiwear characteristic, the preferably encapsulated processing of idler wheel.
A kind of gauge-changeable bogie gauge changing method of end face drive-type realizes the transformation of gauge, and method mainly includes
Following steps:
Step 1: the crankcase cover positioning centering body realizes the located lateral centering of gauge-changeable bogie；
Step 2: support truck journal box unloads axle；
Step 3: the wheel unlocks retaining mechanism, and the end face driving mechanism can slide axially along axle；
Step 4: pushing and pulling the end face driving mechanism makes wheel slide into pair to match with institute gauge changing along axle
Answer position；
Step 5: the wheel locks retaining mechanism, and the end face driving mechanism and axle box are connected, and completes gauge changing.
The positioning centering of gauge-changeable bogie is by crankcase cover positioning centering body and matched ground in step 1
Centering rail in gauge changing auxiliary device, which cooperates, to be completed.
The centering rail is installed in the mounting bracket on railway roadbed, positioned at the two sides of gauge-changeable bogie.
The unloading of axle is completed by the back-up roller wheel group in matched ground gauge changing auxiliary device in step 2, described
Back-up roller wheel group be made of the roller built in bearing.
Wheel described in step 3 is installed on the end face of axle box retaining mechanism, and unlock rail is by pushing or pulling on wheel to locking machine
The unlock guiding axis of structure, which makes to take turns to release between key and the locking arm of end face driving mechanism to retaining mechanism, to be engaged, to complete
Unlock；The unlock rail is installed in the mounting bracket of axle box side, is located at railway roadbed two sides.
The sliding of wheel is caused by being slid axially by the end face driving mechanism along axle in step 4.
Thrust suffered by end face driving mechanism described in step 4 or pulling force are by matched ground gauge changing auxiliary device
Gauge changing driving rail provide, gauge changing driving rail to the actuating arm of end face driving mechanism apply thrust realize broad gauge to
The transformation of narrow gauge, gauge changing drive rail to apply pulling force to the actuating arm of end face driving mechanism and realize the transformation of narrow gauge to broad gauge.
The gauge changing driving rail is installed in the mounting bracket of axle box side, is located at railway roadbed two sides.
Wheel is in normal lock status to retaining mechanism in step 5, and coupling mechanism force derives from the locking spring taken turns to retaining mechanism,
The locking spring, which makes to take turns, is intermeshed the key of retaining mechanism and the locking arm of end face driving mechanism, by end face driving mechanism
Locking opposite with axle box, and then wheel in vehicle travel process is made not change wheelspan.
Now for the conversion process by gauge-changeable bogie between standard gauge 1435mm and broad gage 1520mm, in detail
Illustrate the transform method of gauge.
Step 1: gauge-changeable bogie enters matched ground gauge changing auxiliary device region, the crankcase cover positioning
Centering roll wheel assembly 18 in centering body contacts centering rail 25 and rolls on, and realizes the positioning pair of gauge-changeable bogie
In；
Step 2: the supporting boot of gauge-changeable bogie lower part proceeds in back-up roller wheel group 21, and back-up roller wheel group 21 supports
Gauge-changeable bogie unloads axle；
Step 3: unlock rail 22 of the wheel to the unlock roll wheel assembly 15 of retaining mechanism in 21 outside of back-up roller wheel group is recessed
It is rolled in slot, the position with unlock 22 groove of rail rises, and roll wheel assembly 15 is vertical moves upwards for driving unlock, thus with driving wheel
The closing piece 11-1 of retaining mechanism is engaged with the releasing of locking arm 5, end face driving mechanism is in the state that can slide axially along axle；
Step 4: concave slot sports of the driving roll wheel assembly 7 of the end face driving mechanism on gauge changing driving rail 24 become
Gauge driving rail 24 slides axially to push or pull on end face driving mechanism along axle；If gauge is transformed to by 1435mm
1520mm, then the one such as end face driving mechanism and sliding sleeve, wheel is slided to axle shaft end, and on the contrary then two wheels slide in opposition；
Step 5: guiding axis 12 is vertical moves downward to the locking spring 14 of retaining mechanism driving unlock for the wheel, thus
So that closing piece 11-1 and locking arm 5 are intermeshed, by the locking opposite with axle box of end face driving mechanism, gauge changing is completed.
The above is the utility model preferred embodiment, does not limit the utility model with this.
Claims (5)
1. a kind of gauge-changeable bogie crankcase cover positions centering body, which is characterized in that the crankcase cover positions transducer
Structure includes positioning centering end cap mounting base (16), positioning centering end cap (17), centering roll wheel assembly (18), and the crankcase cover is fixed
There are four end cap U-lag (16-1) for system on the centering body of position, and the positioning centering end cap mounting base (16) is by positioning to middle-end
Lid mounting base mounting hole (16-2) is bolted the lock tube (9) of retaining mechanism with wheel, the positioning centering end cap mounting base
(16) have on for positioning centering end cap installation threaded hole (16-3) with positioning centering end cap (17) installation, the centering idler wheel
Component (18) is installed on the positioning centering end cap (17), and the centering roll wheel assembly (18) is in matched ground gauge changing
It is rolled on driving rail, the crankcase cover positioning centering body is for the positioning centering during gauge changing.
2. a kind of gauge-changeable bogie crankcase cover according to claim 1 positions centering body, which is characterized in that described
The end cap U-lag (16-1) of positioning centering end cap mounting base (16) is described respectively with locking arm (5), actuating arm (6) clearance fit
Locking arm (5), actuating arm (6) slide axially in end cap U-lag (16-1) along axle.
3. a kind of gauge-changeable bogie crankcase cover according to claim 1 positions centering body, which is characterized in that described
It is formed with centering idler wheel mounting base (17-1) in positioning centering end cap (17), is formed on the centering idler wheel mounting base (17-1) vertical
Centering idler wheel axis hole (17-2), the positioning centering end cap (17) by position centering end cap installing hole (17-3) be installed on institute
It states in positioning centering end cap mounting base (16).
4. a kind of gauge-changeable bogie crankcase cover according to claim 1 positions centering body, which is characterized in that described
Centering roll wheel assembly (18) includes roller shaft, bearing and idler wheel, and the centering roll wheel assembly (18) is in matched ground pair
It is rolled on rail, guarantees the positioning centering of axle and gauge-changeable bogie during gauge changing.
5. a kind of gauge-changeable bogie crankcase cover according to claim 4 positions centering body, which is characterized in that described
Idler wheel is elastic roller, and elastic roller has mute antiwear characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820698569.3U CN208291235U (en) | 2018-05-11 | 2018-05-11 | A kind of gauge-changeable bogie crankcase cover positioning centering body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820698569.3U CN208291235U (en) | 2018-05-11 | 2018-05-11 | A kind of gauge-changeable bogie crankcase cover positioning centering body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208291235U true CN208291235U (en) | 2018-12-28 |
Family
ID=64704373
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820698569.3U Expired - Fee Related CN208291235U (en) | 2018-05-11 | 2018-05-11 | A kind of gauge-changeable bogie crankcase cover positioning centering body |
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| Country | Link |
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| CN (1) | CN208291235U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407838A (en) * | 2018-05-11 | 2018-08-17 | 吉林大学 | A kind of gauge-changeable bogie crankcase cover positioning centering body |
-
2018
- 2018-05-11 CN CN201820698569.3U patent/CN208291235U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407838A (en) * | 2018-05-11 | 2018-08-17 | 吉林大学 | A kind of gauge-changeable bogie crankcase cover positioning centering body |
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| GR01 | Patent grant | ||
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Granted publication date: 20181228 Termination date: 20200511 |