CN208149331U - A kind of locomotive traction buffer unit - Google Patents
A kind of locomotive traction buffer unit Download PDFInfo
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- CN208149331U CN208149331U CN201721206648.XU CN201721206648U CN208149331U CN 208149331 U CN208149331 U CN 208149331U CN 201721206648 U CN201721206648 U CN 201721206648U CN 208149331 U CN208149331 U CN 208149331U
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- 239000000872 buffer Substances 0.000 title claims abstract description 77
- 230000003137 locomotive effect Effects 0.000 title claims abstract description 38
- 239000004568 cement Substances 0.000 claims abstract description 57
- 238000007789 sealing Methods 0.000 claims description 25
- 239000004927 clay Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 4
- 238000005242 forging Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 238000007906 compression Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 8
- 230000003139 buffering effect Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000418 atomic force spectrum Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 206010008469 Chest discomfort Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000006173 Good's buffer Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The application provides a kind of locomotive traction buffer unit, including coupler yoke key (1), couple yoke (2), center wedge (3), afterwards from plate (4), buffer box body (5), cushion plugs (6) and elastic cement core (7), it is characterized in that, couple yoke (2) front end connects coupler yoke key (1), it is fixed buffer box body (5) by cushion plugs (6) in the middle part of couple yoke (2), center wedge (3) is set to buffer box body (5) rear end, center wedge (3) rear end is set to from plate (4) afterwards, it is internal that elastic cement core (7) is set to buffer box body (5).By using the design of elastic cement core nonlinear dampling feature structure, the automobile-used traction buffer unit of the machine is made to obtain good damping characteristics；Buffer box body and the preceding integral structure from plate, solve the problems, such as to be limited by vehicle body bottom frame installation space；The cushion plugs of solid forging improve the centering reset capability of hitch.
Description
Technical field
The utility model relates to railway security field, especially a kind of locomotive traction buffer unit.
Background technique
Rail vehicles traction buffer unit is mainly made of components such as buffer unit, hitch and couple yokes, is buffered
Device is core component, it is set between locomotive and vehicle or locomotive and locomotive.In train operation, buffer unit is drawn
Impact force when for transmitting the hauling capacity of a locomotive and brake, even hang, it is non-at the uniform velocity in braking, acceleration etc. by absorbing or reducing locomotive
The longitudinal force generated in traveling reduces the hitch transverse component as caused by longitudinal impact force and vehicle derailing coefficient, improves
Train longitudinal dynamics performance extends the car body service life, to improve the stability and stationarity of train operation, it is ensured that railway transportation
Safety.
Prior art is the mesh for reaching buffering and energy absorption by the elasticity of compression and damping characteristic of elastic element
's.Its feature is that operation is smooth, low-speed impedance power is small, good buffer effect；The disadvantage is that stroke is big, in braking on curve, hitch holds
Easily partially, automatic centering reset function is insufficient, causes hitch cross force excessive for pressure, is unfavorable for the safe operation of middle part locomotive.Therefore,
Under Datong-Qinhuangdao Railway special operation condition, which forbids organizing into groups locomotive for middle part.Meanwhile the buffer unit maintenance cost compared with
Height needs to carry out entire coupler buffering device more every year in 8~100,000 kilometers of just elastomer buffering cake breakages frequent occurrence of operation
It changes.
Utility model content
To overcome existing defect, the utility model proposes a kind of locomotive traction buffer units.
A kind of locomotive traction buffer unit, including coupler yoke key, couple yoke, center wedge, after from plate, buffer box body, slow
Extrusion and elastic cement core, the couple yoke front end connect coupler yoke key, and buffer box body is fixed by cushion plugs in couple yoke middle part,
Center wedge is set to buffer box body rear end, after from plate be set to center wedge rear end, elastic cement core is set to baffle-box
Internal portion.
Wherein, in buffer box body inside, spring assembly is arranged in top；Elastic cement core, spring base setting is arranged in lower part
In spring assembly and elastic cement core rear portion.Buffer box body, from plate integral structure, it is vertical can to meet locomotive buffer unit with preceding
To 338 millimeters of installation dimension requirements.
Wherein, cushion plugs are U-shaped structure, and rotary table is against the front side of buffer box body at the top of U-shaped cushion plugs.Cushion plugs can mention
For hitch horizontal reset.
Wherein, movable plate is arranged in spring base rear, and outer stationary plates are arranged above movable plate；Fixed inclined plate is set below movable plate, Gu
Voussoir is arranged in batter board lower end, and voussoir rear portion is bonded center wedge.
Wherein, the tilted rubbing surface of center wedge is bonded with the rubbing surface of voussoir, the big rubbing surface in the outside of voussoir and solid
The medial surface of batter board is bonded, and the small rubbing surface in the lower part of voussoir is bonded with the top bevel of spring base, is rubbed on the outside of fixed inclined plate
Wiping face is bonded with the medial surface of movable plate, and the lateral surface of movable plate is bonded with outer stationary plates.This mechanism is by 9 antifriction metal (AFM) forging moldings
Friction block, 3 spring bases and 6 groups of springs at symmetrical 10 pairs can self-righting friction it is secondary, by rushing in locomotive operation
Effect energy is hit to be converted to frictional heat and consume.
Wherein, elastic cement core is located at lower center position in buffer box body, and bottom surface and buffer box body inner bottom surface paste
It closes, top is bonded and is servo-actuated with the lower part of spring base.
Wherein, cylinder barrel is set inside the elastic cement core, the piston with check valve is sealed by elastic cement core
Structure is mounted in cylinder barrel, the elastic cement being full of in cylinder barrel, and dust seal sleeve is arranged on the outside of piston cylinder end, wherein living
It fills in end and pressure-releasing chamber is set, pressure-releasing chamber is sealed by block, and steel ball is arranged in pressure-releasing chamber.
Elastic cement core sealing structure includes cylinder cap, is located at cylinder barrel open end and seals cylinder barrel.
It include sealing ring, guide sleeve, O-ring seals, tail-hood and supporting block inside cylinder sleeve, wherein the sealing ring and lead
It is positioned to set by tail-hood and supporting block, O-ring seals are embedded in sealing ring, tail-hood by spring collar is fixed on cylinder cap
It is interior.
Sealing ring is two, and guide sleeve is three；Twice O-ring seals are inlayed on sealing ring respectively.By using elasticity
The design of clay core nonlinear dampling feature structure makes the automobile-used traction buffer unit of the machine obtain good damping characteristics；It is slow
Cabinet and the preceding integral structure from plate are rushed, solves the problems, such as to be limited by vehicle body bottom frame installation space；The buffering of solid forging
Plug improves the centering reset capability of hitch.
Detailed description of the invention
Fig. 1 is that locomotive draws buffer unit schematic diagram 1.
Fig. 2 is that locomotive draws buffer unit schematic diagram 2.
Fig. 3 is elastic cement core schematic diagram.
Fig. 4 is elastic cement core sealed structural schematic diagram.
Fig. 5 is elastic cement core damping characteristic schematic diagram.
Specific embodiment
A kind of locomotive provided by the utility model is carried out with traction buffer unit in the following with reference to the drawings and specific embodiments
Detailed description.
Fig. 1 and Fig. 2 shows a kind of locomotive with traction buffer unit, including coupler yoke key 1, couple yoke 2, center wedge 3, after from
Plate 4, buffer box body 5, cushion plugs 6 and elastic cement core 7,2 front end of couple yoke connect coupler yoke key 1, lead in the middle part of couple yoke 2
Cross the fixed buffer box body 5 of cushion plugs 6, center wedge 3 is set to 5 rear end of buffer box body, after be set to center wedge 3 from plate 4 after
End, elastic cement core 7 are set to inside buffer box body 5.
In 5 inside of buffer box body, spring assembly 8 is arranged in top；Elastic cement core 7 is arranged in lower part, and spring base 9 is set to
7 rear portion of spring assembly 8 and elastic cement core.
Cushion plugs 6 in couple yoke 2 are U-shaped structure, and every two rotary table outstanding is connected, rotary table top and hitch tail
Facial planes is opposite, and the rear part is against the bottom surface of buffer box body 5, makees the free pivot angle first is that limitation hitch；Second is that in hitch
When pivot angle is greater than free pivot angle, the restoring force of buffer unit is transmitted to coupler butt plane, provides reset force for hitch.
Movable plate 11 is arranged in 9 rear of spring base, and outer stationary plates 10 are arranged above movable plate 11；Fixed inclined plate is set below movable plate 11
12, voussoir 13 is arranged in fixed 12 lower end of inclined plate, and 13 rear portion of voussoir is bonded center wedge 3.
The tilted rubbing surface of center wedge 3 is bonded with the rubbing surface of voussoir 13, the big rubbing surface in the outside of voussoir 13 and solid
The medial surface of batter board 12 is bonded, and the small rubbing surface in the lower part of voussoir 13 is bonded with the top bevel of spring base 9, fixed inclined plate 12
Outer friction surface is bonded with the medial surface of movable plate 11, and the lateral surface of movable plate 11 is bonded with outer stationary plates 10.
The top planes of center wedge 3 and it is opposite after it is servo-actuated from plate, friction element and spring base 9 form 10 pairs of frictions
Pair, under the supporting role of 5 bottom groups of springs 8 of buffer box body, by the relative movement of friction element, rub adjutant's locomotive underframe
The impact energy for passing to traction buffer unit is converted to friction heat loss.
The utility model buffer box body 5, by the preceding cavity design knot from plate and installation friction mechanism and elastic cement core
Integrator, solve friction clay composite construction draws what buffer unit was limited in 338 millimeters of installation spaces of existing locomotive
Problem.
Elastic cement core 7 is located at lower center position in buffer box body 5, and bottom surface is bonded with 5 inner bottom surface of buffer box body,
Its top is bonded and is servo-actuated with the lower part of spring base 9.
Fig. 3 and Fig. 4 shows setting cylinder barrel 16, the piston 14 with check valve inside elastic cement core 7 and passes through elastic cement
Core sealing structure 18 is mounted in cylinder barrel 16, the elastic cement 17 being full of in cylinder barrel 16, and setting is anti-on the outside of 16 piston end of cylinder barrel
Dirt seal sleeve 15.
Piston assembly 14 is pressed into cylinder barrel 16, by the volume compression for the elastic cement 17 being full of in cylinder barrel 16, makes cylinder barrel
The pressure of elastic cement 17 in 16 is risen by predetermined design rigidity, so that the static constraint reaction for extracting piston rod rises, reaches energy
Measure the purpose of storage；When having compression speed, elastic cement 17 is passing through the annulus between 16 inner wall of piston and cylinder barrel
When gap, high pressure chest is formed in the front end face of moving piston 14, low pressure chamber is formed in the rear end face of moving piston 14, generates pressure
Difference.When having compression speed, by piston rod simultaneously pass out dynamic pressure, dynamic pressure at this time with the raising of press-in speed and
Increase.Sealing structure is positioned double-layer seal rings 162 and three groups of guide sleeves 163 by tail-hood 164 and supporting block 165, uses spring
Retainer ring 166 is fixed in cylinder cap 161, and twice O-ring seal 167 has blocked the transmitting of pressure, keeps two layers of sealing-plug 162 only
Vertical work, increases reliability and the fatigue life of sealing structure；Sealing ring 162 is packed into from cylinder cap open end, will not damage sealing,
This structure solves the installation problem sealed when the radial thickness ratio very little of diameter of piston rod and sealing.
Pressure-releasing chamber 141 is arranged in piston end, and pressure-releasing chamber 141 is sealed by block, and steel ball 143 is arranged in pressure-releasing chamber 141, by
In energy will be stored when the elastic cement in cylinder barrel 16 is compressed, piston assembly 14 is promoted to have rebound trend, when compression is dynamic
When can be zero, piston assembly 14 starts to rebound.When speed very little, the elastic force of piston assembly 14 rebounds by the static of core
Force curve rebound (pressure of elastic cement be static bounce that the stiction in system is overcome to be formed), when there is speed time
When bullet, the check valve on piston 14 is opened, and is reduced the rebound damping of piston assembly 14 as far as possible, is promoted piston assembly
14 are shortened the rebound time, improve buffer system by static rebound force curve rebound to accelerate the ball rebound velocity of core
The response coefficient of system.At low temperatures, elastic cement viscosity increases, resistance when replying to the left after 14 elasticity of compression clay of piston
Increase, steel ball 143 flicks to the right rapidly next time in differential pressure action at this time, sticks on 142 left side of block, and check valve is opened, makes to live
The 14 rapid release in right side of plug, piston 14 drives piston rod, and quickly return, the low temperature for improving friction daub buffer reset to the left
Performance.Simultaneously because rebound process eliminates damping action, the energy consumption of elastic cement core 7 itself is reduced, is reduced
Temperature rise also played an important role the overheating protection of sealing.
As shown in figure 5, the utility model is changed using elastic cement in lower damping characteristic different in flow rate, design it is non-linear
The rigid friction energy-dissipating process of the standard of friction mechanism is converted to flexible buffer energy consumption by the elastic cement core 7 of damping characteristic structure
Process, elastic cement core automated to respond to the resistance for drawing buffer unit under different tractions and impact operating condition, thus
To good cushion energy absorbing property, meet the operation requirement of heavy loading locomotive.
Two kinds of motoricities for drawing buffer unit transmitting locomotive, are tractive force and impact force respectively.Tractive force transmittance process
For：
The tractive force of locomotive is transmitted to buffer box body by the two sides boss of buffer box body 5 from the front draft lug of vehicle body bottom frame
5, small portion's tractive force from 5 bottom of buffer box body is transferred to spring assembly 8 and elastic cement core 7, is then passed to spring base 9,
It is then transferred to two voussoirs 13, is then passed to center wedge 3, most of tractive force passes through 5 oral area side wall of buffer box body and side
Wall boss is transferred to outer stationary plates 10 and fixed inclined plate 12, is then passed to two pieces of movable plates 11 and is transferred to center wedge by voussoir
Block 3, after then follower plate 11 and center wedge 3 are transferred to from plate 4, be then passed to the tail inner side face of couple yoke 2, then pass
It is handed to the coupler yoke key 1 of 2 front of couple yoke, provides tractive force by the hitch connecting with coupler yoke key 1 for trailing locomotive or vehicle；
The transmittance process of impact force be after being transferred to from the rear draft lug of vehicle body bottom frame from plate 4, be then passed to center wedge
The big portion of power that power on block 3 and two pieces of movable plates 11, center wedge 3 is transferred on two pieces of voussoirs, 13, two pieces of voussoirs 13 is transferred to pair
Then the fixation inclined plate 12 that should be close to by 5 oral area side wall boss of buffer box body is transferred to 5 bottom of buffer box body；Fraction power
Groups of springs 8 and elastic cement core 7 are transferred to by spring base 9, are then passed to 5 bottom of buffer box body；On two pieces of movable plates 11
Power be transferred to the outer stationary plates 10 of abutting and fixed inclined plate 12, then convex by 5 oral area side wall of buffer box body and side wall respectively
Platform is transferred to 5 bottom of buffer box body, is then passed to 2 front inner face of couple yoke, is then passed to coupler yoke key 1 and then passes through
The hitch connecting with coupler yoke key 1 is transferred to trailing locomotive or vehicle.
Elastic cement core mechanism is：Piston assembly 14 is pressed into cylinder barrel 16, the elasticity that will be full of in cylinder barrel 16
The volume compression of clay 17 rises the pressure of the elastic cement 17 in cylinder barrel 16 by predetermined design rigidity, to make piston rod
The static constraint reaction of extraction rises, and achievees the purpose that energy storage；When having compression speed, elastic cement 17 is passing through piston 14
When annular gap between 16 inner wall of cylinder barrel, high pressure chest is formed in the front end face of moving piston 14, after moving piston 14
End face forms low pressure chamber, generates pressure difference.When having compression speed, dynamic pressure is passed out simultaneously by piston rod, at this time
Dynamic pressure increases with the raising of press-in speed.Since energy will be stored when the elastic cement in cylinder barrel 16 is compressed, promote
Piston assembly 14 has rebound trend, and when compressing kinetic energy is zero, piston assembly 14 starts to rebound.It is living when speed very little
The elastic force of plug assembly 14 by core the static rebound force curve rebound (pressure of elastic cement quiet rubbing of only overcoming in system
Wipe the static bounce that power is formed), when there is speed rebound, the check valve on piston 14 is opened, and makes the anti-of piston assembly 14
Bullet damping reduces as far as possible, promotes piston assembly 14 to reply by static state rebound force curve, to accelerate the rebound of core
Speed shortens the rebound time, improves the response coefficient of buffer system.Make simultaneously because rebound process eliminates damping
With reducing the energy consumption of elastic cement core itself, reduce temperature rise, also played the overheating protection of sealing important
Effect.
The elastic cement core of the utility model makes elastic cement generate different damping forces by cylinder barrel variable diameter design,
To form nonlinear dampling force characteristic curve, which matches with the friction mechanism of buffer meets locomotive, vehicle bumper
It can require.
The novel sealing structure of elastic cement core increases sealing structure using double-layer seal rings and three groups of guide sleeve guiding
Reliability and fatigue life；Sealing ring is packed into from cylinder cap opening end, solves the radial thickness of diameter of piston rod and sealing
The installation problem sealed when ratio very little；One-way valve structures, at low temperatures, elastic cement viscosity increase, and check valve is opened
Afterwards, piston rod can returning quickly, improve friction daub buffer low temperature reseting performance.
The utility model is changed using elastic cement in lower damping characteristic different in flow rate, the nonlinear dampling characteristic knot of design
The viscous friction energy consumption process of buffer friction mechanism is converted to viscous-soft buffering energy-consumption process by the elastic cement core of structure,
Elastic cement core automated tos respond to the resistance of frictional buffer under different operating conditions, to obtain good buffering energy-consumption
Characteristic meets the operation requirement of locomotive, vehicle.
Finally it should be noted that above embodiments are only to describe the technical solution of the utility model rather than to this technology
Method is limited, and the utility model can above extend to other modifications, variation, application and embodiment in application, and because
This thinks all such modification, variation, application, embodiments all within the scope of the spirit or teaching of the utility model.
Claims (10)
1. a kind of locomotive traction buffer unit, including coupler yoke key (1), couple yoke (2), center wedge (3), after from plate (4), slow
Rush cabinet (5), cushion plugs (6) and elastic cement core (7), which is characterized in that couple yoke (2) front end connects coupler yoke key
(1), fixed buffer box body (5) by cushion plugs (6) in the middle part of couple yoke (2), after center wedge (3) is set to buffer box body (5)
End, after from plate (4) be set to center wedge (3) rear end, it is internal that elastic cement core (7) is set to buffer box body (5).
2. locomotive according to claim 1 traction buffer unit, which is characterized in that in buffer box body (5) inside,
Spring assembly (8) are arranged in top；Elastic cement core (7) are arranged in lower part, and spring base (9) is set to spring assembly (8) and elasticity
Clay core (7) rear portion.
3. locomotive according to claim 1 traction buffer unit, which is characterized in that the cushion plugs (6) are U-shaped knot
Structure, U-shaped cushion plugs (6) top rotary table are against the front side of buffer box body (5).
4. locomotive according to claim 2 traction buffer unit, which is characterized in that movable plate is arranged in spring base (9) rear
(11), outer stationary plates (10) are set above movable plate (11)；It is arranged below movable plate (11) fixed inclined plate (12), fixed inclined plate (12)
Voussoir (13) are arranged in lower end, and voussoir (13) rear portion is bonded center wedge (3).
5. locomotive according to claim 2 or 4 traction buffer unit, which is characterized in that center wedge (3) introversion
Oblique rubbing surface is bonded with the rubbing surface of voussoir (13), the medial surface of the big rubbing surface in outside of voussoir (13) and fixed inclined plate (12)
Fitting, the small rubbing surface in lower part of voussoir (13) are bonded with the top bevel of spring base (9), the outer friction surface of fixed inclined plate (12)
It is bonded with the medial surface of movable plate (11), the lateral surface of movable plate (11) is bonded with outer stationary plates (10).
6. locomotive according to claim 2 traction buffer unit, which is characterized in that elastic cement core (7) position
In buffer box body (5) interior lower center position, bottom surface is bonded with buffer box body (5) inner bottom surface, top and spring base (9)
Lower part is bonded and is servo-actuated.
7. locomotive according to claim 1 or 6 traction buffer unit, which is characterized in that the elastic cement core (7)
Inside setting cylinder barrel (16), the piston (14) with check valve are mounted on cylinder barrel (16) by elastic cement core sealing structure (18)
Dust seal sleeve (15) are arranged in elastic cement (17) that is interior, being full of in cylinder barrel (16), cylinder barrel (16) piston end outside, wherein
Pressure-releasing chamber (141) are arranged in piston (14) end, and pressure-releasing chamber (141) is sealed by block (142), and steel is arranged in pressure-releasing chamber (141)
Ball (143).
8. locomotive according to claim 7 traction buffer unit, which is characterized in that the elastic cement core sealing knot
Structure (18) includes cylinder cap (161), is located at cylinder barrel (16) open end and seals cylinder barrel (16).
9. locomotive according to claim 8 traction buffer unit, which is characterized in that include inside the cylinder cap (161)
Sealing ring (162), guide sleeve (163), O-ring seals (167), tail-hood (164) and supporting block (165), wherein the sealing ring
(162) it is positioned with guide sleeve (163) by tail-hood (164) and supporting block (165), O-ring seals (167) are embedded in sealing ring
(162) interior, tail-hood (164) is fixed in cylinder cap (161) by spring collar (166).
10. locomotive according to claim 9 traction buffer unit, which is characterized in that sealing ring (162) is two, is led
It is three to set (163)；Twice O-ring seals (167) are inlayed on sealing ring (162) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721206648.XU CN208149331U (en) | 2017-09-20 | 2017-09-20 | A kind of locomotive traction buffer unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721206648.XU CN208149331U (en) | 2017-09-20 | 2017-09-20 | A kind of locomotive traction buffer unit |
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| CN208149331U true CN208149331U (en) | 2018-11-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650940A (en) * | 2017-09-20 | 2018-02-02 | 中国铁道科学研究院金属及化学研究所 | A kind of locomotive traction buffer unit |
| CN112298263A (en) * | 2019-07-30 | 2021-02-02 | 比亚迪股份有限公司 | Buffer device, coupler assembly, train and rail transit system |
-
2017
- 2017-09-20 CN CN201721206648.XU patent/CN208149331U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107650940A (en) * | 2017-09-20 | 2018-02-02 | 中国铁道科学研究院金属及化学研究所 | A kind of locomotive traction buffer unit |
| CN107650940B (en) * | 2017-09-20 | 2024-04-12 | 中国铁道科学研究院金属及化学研究所 | Traction buffer device for locomotive |
| CN112298263A (en) * | 2019-07-30 | 2021-02-02 | 比亚迪股份有限公司 | Buffer device, coupler assembly, train and rail transit system |
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