CN211308582U - Built-in trailer bogie of high-speed motor train unit axle box - Google Patents
Built-in trailer bogie of high-speed motor train unit axle box Download PDFInfo
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- CN211308582U CN211308582U CN201922319238.1U CN201922319238U CN211308582U CN 211308582 U CN211308582 U CN 211308582U CN 201922319238 U CN201922319238 U CN 201922319238U CN 211308582 U CN211308582 U CN 211308582U
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- 239000006096 absorbing agent Substances 0.000 claims description 42
- 230000035939 shock Effects 0.000 claims description 42
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 2
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Abstract
Built-in trailer bogie of high-speed EMUs axle box relates to EMUs bogie technical field, and it includes: the frame, wheel-set axle box device, central suspension device and foundation brake device. The utility model discloses it is inboard that the axle box of bogie is constituteed and the curb girder of framework all is located the wheel pair, split type structural design is constituteed to the axle box, the axle box location is a location pull rod location that the level set up, rubber spring is two high bearing capacity's rubber conical spring one, basic arresting gear adopts the mode that rim plate braking and reel braking combined together, central draw gear adopts longitudinal arrangement's single rubber to pile, two anti-rolling torsion bars are located framework crossbeam lower part, whole bogie compact structure, the horizontal size of bogie satisfies the operation requirement of less boundary limit. The utility model discloses the functioning speed of bogie can reach 250km/h, and 19 tons of biggest axle load can satisfy high-speed and high bearing capacity's operation requirement.
Description
Technical Field
The utility model relates to a EMUs bogie technical field, concretely relates to built-in trailer bogie of high-speed EMUs axle box.
Background
At present, the existing high-speed motor train unit bogie in China all adopts the traditional axle box external bogie, namely, an axle box assembly is positioned at the outer side of a wheel pair, and a framework side beam is positioned at the outer side of the wheel pair. The bogie with the external axle box has larger transverse dimension and is suitable for running on a high-speed railway with larger vehicle clearance. However, in some european countries (e.g. the united kingdom), railroads have a history of over a hundred years, old railway routes are complex and have small limits, and therefore for high-speed motor trains, small limit requirements must be met to operate through these existing routes. Conventional axlebox trucks have not had reduced space in the transverse dimension due to overall truck structural layout limitations. Therefore, for a high-speed motor train unit, a brand-new built-in bogie of the axle box of the high-speed motor train unit needs to be designed to break through the restriction bottleneck that the conventional motor train unit bogie is large in size and meet the operation requirement of a small limit.
Some vehicles of the existing urban subways and light rails adopt axle box built-in bogies, but the structure of the bogie of the type is characterized in that a herringbone rubber spring or a single large-diameter rubber spring is adopted for positioning an axle box of a wheel set, a tread brake or an axle disc brake at the outer side of the wheel set is adopted for a basic brake, the bogie is only suitable for the running working conditions of low speed (the highest running speed is less than 100km/h) and low bearing capacity (the maximum axle weight is less than 15t), and the running requirements of high speed (the highest running speed is 250km/h) and high bearing capacity (the maximum axle weight can reach 19t) cannot be met.
SUMMERY OF THE UTILITY MODEL
In order to solve the operation requirement that current external bogie of axle box can't satisfy less boundary limit to and the built-in bogie of current axle box can't satisfy high-speed and high bearing capacity operation requirement's technical problem, the utility model provides a built-in trailer bogie of high-speed EMUs axle box has both reduced the transverse dimension of bogie for EMUs can satisfy high-speed and high bearing capacity's operation requirement again through less boundary limit.
The utility model provides a technical scheme as follows that technical problem took:
built-in trailer bogie of high-speed EMUs axle box, it includes: the frame is of a box-shaped beam welding structure, and is provided with a primary spring seat, two air spring seats, a traction pull rod seat, four primary positioning seats, two lateral rolling resistance torsion rod seats, two anti-snaking shock absorber seats, two secondary vertical shock absorber seats and two secondary transverse shock absorber seats; the wheel pair axle box device comprises wheels, axles, two axle-mounted brake discs, four primary vertical oil pressure dampers, four primary positioning pull rods, a primary rubber spring and four axle boxes, and the central suspension device comprises two air springs, two anti-snake motion dampers, two secondary vertical oil pressure dampers, two anti-side-rolling torsion bars, two height valve assemblies, a traction pull rod, a traction center pin base and two secondary horizontal oil pressure dampers;
the method is characterized in that: the framework is also provided with four wheel disc foundation brake device mounting seats and two shaft disc foundation brake device mounting seats, and the foundation brake device comprises four wheel-mounted brakes and two shaft-mounted brakes;
two side beams of the framework are positioned at the inner sides of the wheels, and four primary positioning pull rods are fixedly connected with four primary positioning seats in a one-to-one correspondence manner; the axle box assembly adopts an upper and lower split type and self-provided labyrinth seal structure, and an upper box body and a lower box body which are formed by the axle boxes are connected through a vertical bolt; the axle box assembly is rotatably connected with an axle through a bearing, the axle box assembly is positioned on the inner side of a wheel, the four axle box assemblies are connected and positioned with the two side beams of the framework through four primary positioning pull rods, and the four primary vertical oil pressure shock absorbers are fixedly connected to the side surfaces of the upper box body of the four axle box assemblies in a one-to-one correspondence manner;
the first series of rubber springs are four groups, and each group of rubber springs is two small-diameter rubber conical springs which are symmetrically and fixedly connected to the top of an upper box body formed by the same axle box; the first series of spring seats are four groups, each group is two first series of spring seats symmetrically and fixedly connected to the same side beam of the framework, and the top ends of the two rubber conical springs of each group are fixedly connected to one group of first series of spring seats in a one-to-one correspondence manner;
the two air spring seats are symmetrically arranged in the middle of the framework, the two air springs are fixedly connected to the two air spring seats in a one-to-one correspondence mode, the two altitude valves are fixedly connected to the underframe of the vehicle body and are connected with the two air springs in a one-to-one correspondence mode through pipelines, and the altitude valves are used for controlling air charging and air discharging of the air springs;
the four wheel disc basic brake device installation seats are symmetrically arranged at the end part of the framework, the two shaft disc basic brake device installation seats are obliquely and symmetrically arranged on the inner side of the framework, the four wheel-mounted brakes are fixedly connected to the four wheel disc basic brake device installation seats in a one-to-one correspondence manner, and the two shaft-mounted brakes are fixedly connected to the two shaft disc basic brake device installation seats in a one-to-one correspondence manner; the four wheel-mounted brakes are matched with the four wheels to realize tread braking of the vehicle, and the two shaft-mounted brakes are matched with the two shaft-mounted brake discs to realize shaft disc braking of the vehicle;
the traction pull rod seat is arranged in the middle of a cross beam of the framework, the main structure of the traction pull rod is a rubber pile, the traction pull rod is longitudinally arranged below the traction center pin boss, two ends of the traction pull rod are respectively provided with a rubber node, one rubber node of the traction pull rod is fixedly connected with the traction pull rod seat, and the other rubber node of the traction pull rod is fixedly connected with the lower part of the traction center pin boss;
the two anti-side-rolling torsion bar seats are symmetrically arranged on the framework, and the two anti-side-rolling torsion bars are fixedly connected with the two anti-side-rolling torsion bar seats in a one-to-one correspondence manner;
the two anti-snake motion shock absorber seats are symmetrically arranged on the outer side of the middle part of the framework, are of modular structures and are fixedly connected with the framework through bolts, and the two anti-snake motion shock absorbers are fixedly connected with the two anti-snake motion shock absorber seats in a one-to-one correspondence manner;
the two secondary vertical shock absorber seats are symmetrically arranged on the framework, and the two secondary vertical oil pressure shock absorbers are fixedly connected with the two secondary vertical shock absorber seats in a one-to-one correspondence manner;
the two secondary transverse shock absorber seats are obliquely and symmetrically arranged on the cross beam of the framework, and the two secondary transverse oil pressure shock absorbers are fixedly connected with the two secondary transverse shock absorber seats in a one-to-one correspondence mode.
The utility model has the advantages as follows:
1. the primary suspension is composed of a primary vertical oil pressure shock absorber and a primary rubber spring, and two longitudinally arranged small-diameter rubber conical springs are fixedly connected to the top of an axle box to meet the requirement of the installation space of the wheel-mounted brake. Compared with the structure that a large-diameter rubber spring is arranged at the top of the existing axle box, the diameter of the rubber spring is smaller, and the occupied transverse space is less. The design structure enhances the vertical bearing capacity of the primary suspension system and reduces the transverse occupied space of the spring.
2. The axle box is formed and is located the wheel pair inboard, adopts split type from top to bottom, from taking labyrinth seal structure, and rubber conical spring installs at box top on the axle box, and box side is provided with vertical shock absorber mount pad and location pull rod mount pad on the axle box, dismantles the vertical bolted connection between the upper and lower box, can realize the quick replacement of wheel pair. Because the axle box assembly omits the conventional shaft end gland structure connected through bolts, the space required by transverse bolt connection is omitted, and the transverse occupied space is further reduced.
3. Because the traditional axle box rotating arm positioning mode can not meet the requirement of installation space, the axle box is longitudinally positioned by adopting a single one-series positioning pull rod, and the one-series positioning pull rod installation seat is positioned in the middle of the axle box. During traction and braking, the acting force of a series of positioning pull rods directly acts on the center of the axle, and additional moment cannot be generated on the axle box. The two ends of the first positioning pull rod are rubber nodes, the longitudinal rigidity of the rubber nodes is adjustable, and the requirement of high longitudinal positioning rigidity of the bogie wheel set of the high-speed motor train unit can be met.
4. The bogie adopts a mode that wheel-mounted brake discs and shaft-mounted brake discs are combined, the wheel-mounted brakes are positioned at the end parts of the side beams of the frame, and the wheel-mounted brakes are positioned in the middle of the frame relative to the traditional wheel-mounted brakes, so that the arrangement mode completely avoids the interference problem of the wheel-mounted brakes and the axle box positioning pull rods, and the axle box positioning pull rods can be horizontally placed in the centers of the axle boxes. Meanwhile, the adjusting space for fixing the size of the wheelbase is released, and the smaller fixed wheelbase can be realized on the premise of meeting the dynamic performance, so that the compact design of the bogie is further realized. According to the design requirement of the braking device, two axle-mounted brakes are obliquely and symmetrically arranged on two axles respectively.
5. The traction pull rod of the central traction device adopts a structure form of one rubber pile, and compared with the traditional design structures of a Z-shaped traction pull rod, a single pull rod and two groups of rubber piles, the structure has small occupation of transverse and longitudinal space and simple structure, namely, the central pin is directly contacted with the traction rubber piles which are longitudinally arranged, so that traction force and braking force are transmitted, and the contact surface adopts a special low-friction coating to reduce the friction between the central pin and the traction rubber piles.
6. The frame side beams are positioned on the inner sides of the wheel sets, the frame cross beams are of steel plate welding structures, the anti-snake vibration damper seats are of modular design and bolt installation modes, disassembly and assembly and replacement are facilitated, and the number of the vibration dampers can be increased or reduced according to speed requirements.
Drawings
FIG. 1 is a schematic view of the three-dimensional structure of the high-speed motor train unit axle box built-in trailer bogie of the present invention.
Fig. 2 is the side view structure schematic diagram of the built-in trailer bogie of high-speed EMUs axle box of the utility model discloses.
Fig. 3 is a schematic view of the overlooking structure of the high-speed motor train unit axle box built-in trailer bogie of the invention.
Fig. 4 is a schematic perspective view of the frame of the present invention.
Fig. 5 is a schematic top view of the frame according to the present invention.
Fig. 6 is a side view schematic of the frame of the present invention.
Fig. 7 is a schematic perspective view of a wheel-set axle-box assembly according to the present invention.
Fig. 8 is a schematic front view of the wheel-set axle-box assembly according to the present invention.
Fig. 9 is a schematic top view of the wheel-set axle-box assembly according to the present invention.
Fig. 10 is a schematic perspective view of an axle box assembly according to the present invention.
Fig. 11 is an exploded view of the axle box assembly of the present invention.
Fig. 12 is a schematic view of the structure of the assembly relationship between the traction link, the traction center pin boss and two secondary transverse oil dampers according to the present invention.
Fig. 13 is a schematic view of a layout structure of the central suspension device according to the present invention.
Fig. 14 is a schematic top view of the structure of fig. 13.
Fig. 15 is a schematic view of the layout structure of the foundation brake device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 15, the utility model discloses a built-in trailer bogie of high-speed EMUs axle box includes: the device comprises a framework 1, a wheel-set axle box device 2, a central suspension device 3 and a foundation brake device 4; the frame 1 is of a box-shaped beam welding structure, and a primary spring seat 6, two air spring seats 7, four wheel disc basic brake device mounting seats 8, two shaft disc basic brake device mounting seats 9, a traction pull rod seat 10, four primary positioning seats 11, two anti-side-rolling torsion rod seats 12, two anti-snaking damper seats 13, two secondary vertical damper seats 14 and two secondary transverse damper seats 15 are arranged on the frame 1. The wheel-pair axle box device 2 comprises wheels 16, an axle 17, two axle-mounted brake discs 18, four primary vertical oil-pressure shock absorbers 19, four primary positioning pull rods 20, primary rubber springs 21 and four axle box assemblies 22. The central suspension device 3 comprises two air springs 23, two anti-snake motion dampers 24, two secondary vertical oil pressure dampers 25, two anti-rolling torsion bars 26, two altitude valve assemblies 27, a traction pull rod 28, a traction center pin seat 29 and two secondary transverse oil pressure dampers 30. The foundation brake arrangement 4 comprises four wheel-mounted brakes 31 and two axle-mounted brakes 32. The four wheel-mounted brakes 31 and the two shaft-mounted brakes 32 are all brake structures adopted by the existing motor train unit.
Two side beams of the framework 1 are positioned at the inner sides of the wheels 16, and four primary positioning pull rods 20 are fixedly connected with four primary positioning seats 11 in a one-to-one correspondence manner; the axle box assembly 22 adopts an upper and lower split type labyrinth seal structure, and the upper and lower box bodies of the axle box assembly 22 are connected through a vertical bolt; the axle box assemblies 22 are rotatably connected with the axle 17 through bearings, the axle box assemblies 22 are positioned on the inner sides of the wheels 16, the four axle box assemblies 22 are connected with the two side beams of the framework 1 through four one-line positioning pull rods 20 for positioning, and the four one-line positioning pull rods 20 provide longitudinal and transverse rigidity required by one-line positioning. Four primary vertical oil hydraulic dampers 19 are fixedly connected to the side surfaces of the upper box body of the four axle box assemblies 22 in a one-to-one correspondence manner.
The first series of rubber springs 21 are four groups, and each group is two small-diameter rubber conical springs which are symmetrically and fixedly connected to the top of the upper box body of the same axle box assembly 22; the first series of spring seats 6 are four groups, each group is two first series of spring seats symmetrically and fixedly connected to the same side beam of the framework 1, and the top ends of the two rubber conical springs of each group are fixedly connected to one group of first series of spring seats 6 in a one-to-one correspondence manner.
The two air spring seats 7 are symmetrically arranged in the middle of the framework 1, the two air springs 23 are fixedly connected to the two air spring seats 7 in a one-to-one correspondence manner, and the air springs 23 are used for connecting a vehicle body and a bogie; the two height valve assemblies 27 are fixedly connected to the underframe of the vehicle body and are connected with the two air springs 23 in a one-to-one correspondence mode through pipelines, and the height valve assemblies 27 control air charging and air discharging of the air springs 23.
The four wheel disc basic brake device installation seats 8 are symmetrically arranged at the end part of the framework 1, the two shaft disc basic brake device installation seats 9 are obliquely and symmetrically arranged on the inner side of the framework 1, the four wheel-mounted brakes 31 are fixedly connected to the four wheel disc basic brake device installation seats 8 in a one-to-one correspondence manner, and the two shaft-mounted brakes 32 are fixedly connected to the two shaft disc basic brake device installation seats 9 in a one-to-one correspondence manner; four wheel-mounted brakes 31 cooperate with four wheels 16 to effect tread braking of the vehicle, and two axle-mounted brakes 32 cooperate with two axle-mounted brake discs 18 to effect axle disc braking of the vehicle.
The traction pull rod seat 10 is arranged in the middle of a cross beam of the framework 1, the main structure of the traction pull rod 28 is a rubber pile, the traction pull rod 28 is longitudinally arranged below the traction center pin seat 29, two ends of the traction pull rod 28 are respectively provided with a rubber node, one rubber node of the traction pull rod 28 is fixedly connected with the traction pull rod seat 10, and the other rubber node of the traction pull rod 28 is fixedly connected with the lower part of the traction center pin seat 29. A single longitudinally arranged traction link 28 is used to transfer traction and braking forces between the vehicle body and the bogie.
Two anti-side-rolling torsion bar seats 12 are symmetrically arranged on the framework 1, two anti-side-rolling torsion bars 26 are fixedly connected with the two anti-side-rolling torsion bar seats 12 in a one-to-one correspondence mode, and the anti-side-rolling torsion bars 26 provide enough anti-side-rolling force for the vehicle under the side wind working condition.
The two anti-snake motion shock absorber seats 13 are symmetrically arranged on the outer side of the middle part of the framework 1, the two anti-snake motion shock absorber seats 13 are of a modular structure and are fixedly connected with the framework 1 through bolts, the two anti-snake motion shock absorbers 24 are fixedly connected with the two anti-snake motion shock absorber seats 13 in a one-to-one correspondence mode, and the anti-snake motion shock absorbers 24 provide anti-snake motion damping required by high-speed running of a vehicle.
The two secondary vertical shock absorber seats 14 are symmetrically arranged on the framework 1, and the two secondary vertical oil pressure shock absorbers 25 are fixedly connected with the two secondary vertical shock absorber seats 14 in a one-to-one correspondence mode, so that the impact from a track is buffered, and the stress of a primary spring is improved.
The two secondary transverse shock absorber seats 15 are obliquely and symmetrically arranged on the cross beam of the framework 1, and the two secondary transverse oil pressure shock absorbers 30 are fixedly connected with the two secondary transverse shock absorber seats 15 in a one-to-one correspondence mode, so that transverse buffer damping is provided when a vehicle runs at a high speed or passes through a curve.
The utility model discloses 22 and framework 1's curb girder is constituteed to the axle box of bogie all is located the wheel pair inboard, 22 adopt split type structural design to the axle box is constituteed, the axle box location is the location of a positioning pull rod 20 that the level set up, rubber spring 21 is two high bearing capacity's rubber conical spring, basic arresting gear 4 adopts the mode that rim plate braking and reel braking combined together, central draw gear 3 adopts longitudinal arrangement's single rubber to pile, two anti-side roll torsion bars 26 are located framework crossbeam lower part, whole bogie compact structure, the operation requirement of less boundary limit is satisfied to the transverse dimension of bogie. The utility model discloses the functioning speed of bogie can reach 250km/h, and 19 tons of biggest axle load can satisfy high-speed and high bearing capacity's operation requirement.
Claims (1)
1. Built-in trailer bogie of high-speed EMUs axle box, it includes: the wheel set axle box device comprises a framework (1), a wheel set axle box device (2), a central suspension device (3) and a basic brake device (4), wherein the framework (1) is of a box-shaped beam welding structure, and a primary spring seat (6), two air spring seats (7), a traction pull rod seat (10), four primary positioning seats (11), two anti-side-rolling torsion rod seats (12), two anti-snaking vibration damper seats (13), two secondary vertical vibration damper seats (14) and two secondary transverse vibration damper seats (15) are arranged on the framework (1); the wheel pair axle box device (2) comprises wheels (16), axles (17), two axle-mounted brake discs (18), four primary vertical oil pressure shock absorbers (19), four primary positioning pull rods (20), a primary rubber spring (21) and four axle box assemblies (22), and the central suspension device (3) comprises two air springs (23), two anti-snake motion shock absorbers (24), two secondary vertical oil pressure shock absorbers (25), two anti-rolling torsion bars (26), two height valve assemblies (27), a traction pull rod (28), a traction center pin seat (29) and two secondary horizontal oil pressure shock absorbers (30);
the method is characterized in that: the framework (1) is also provided with four wheel disc basic brake device installation seats (8) and two shaft disc basic brake device installation seats (9), and the basic brake device (4) comprises four wheel-mounted brakes (31) and two shaft-mounted brakes (32);
two side beams of the framework (1) are positioned at the inner sides of wheels (16), and four primary positioning pull rods (20) are fixedly connected with four primary positioning seats (11) in a one-to-one correspondence manner; the axle box assembly (22) adopts an upper and lower split type and is provided with a labyrinth seal structure, and the upper box body and the lower box body of the axle box assembly (22) are connected through a vertical bolt; the axle box assemblies (22) are rotatably connected with an axle (17) through bearings, the axle box assemblies (22) are positioned on the inner sides of wheels (16), the four axle box assemblies (22) are connected and positioned with two side beams of the framework (1) through four primary positioning pull rods (20), and the four primary vertical oil pressure shock absorbers (19) are fixedly connected to the side surfaces of upper box bodies of the four axle box assemblies (22) in a one-to-one correspondence manner;
the series of rubber springs (21) are four groups, and each group is two small-diameter rubber conical springs which are symmetrically fixedly connected to the top of an upper box body of the same axle box assembly (22); the primary spring seats (6) are four groups, each group is two primary spring seats symmetrically fixedly connected to the same side beam of the framework (1), and the top ends of the two rubber conical springs of each group are fixedly connected to one group of primary spring seats (6) in a one-to-one correspondence manner;
the two air spring seats (7) are symmetrically arranged in the middle of the framework (1), the two air springs (23) are fixedly connected to the two air spring seats (7) in a one-to-one correspondence manner, and the two height valve assemblies (27) are fixedly connected to the underframe of the vehicle body; the two height valve assemblies (27) are fixedly connected to the underframe of the vehicle body and are connected with the two air springs (23) in a one-to-one correspondence mode through pipelines, and the height valve assemblies (27) control air charging and air discharging of the air springs (23);
the four wheel disc basic brake device installation seats (8) are symmetrically arranged at the end part of the framework (1), the two shaft disc basic brake device installation seats (9) are obliquely and symmetrically arranged at the inner side of the framework (1), the four wheel-mounted brakes (31) are fixedly connected to the four wheel disc basic brake device installation seats (8) in a one-to-one correspondence manner, and the two shaft-mounted brakes (32) are fixedly connected to the two shaft disc basic brake device installation seats (9) in a one-to-one correspondence manner; the four wheel-mounted brakes (31) are matched with the four wheels (16) to realize tread braking of the vehicle, and the two shaft-mounted brakes (32) are matched with the two shaft-mounted brake discs (18) to realize shaft disc braking of the vehicle;
the traction pull rod seat (10) is arranged in the middle of a cross beam of the framework (1), the main structure of the traction pull rod (28) is a rubber pile, the traction pull rod (28) is longitudinally arranged below the traction center pin seat (29), two ends of the traction pull rod (28) are respectively provided with a rubber node, one rubber node of the traction pull rod (28) is fixedly connected with the traction pull rod seat (10), and the other rubber node of the traction pull rod (28) is fixedly connected with the lower part of the traction center pin seat (29);
the two anti-side-rolling torsion bar seats (12) are symmetrically arranged on the framework (1), and the two anti-side-rolling torsion bars (26) are fixedly connected with the two anti-side-rolling torsion bar seats (12) in a one-to-one correspondence manner;
the two anti-snake motion shock absorber seats (13) are symmetrically arranged on the outer side of the middle part of the framework (1), the two anti-snake motion shock absorber seats (13) are of a modular structure and are fixedly connected with the framework (1) through bolts, and the two anti-snake motion shock absorbers (24) are fixedly connected with the two anti-snake motion shock absorber seats (13) in a one-to-one correspondence manner;
the two secondary vertical shock absorber seats (14) are symmetrically arranged on the framework (1), and the two secondary vertical oil pressure shock absorbers (25) are fixedly connected with the two secondary vertical shock absorber seats (14) in a one-to-one correspondence manner;
the two secondary transverse shock absorber seats (15) are obliquely and symmetrically arranged on a cross beam of the framework (1), and the two secondary transverse oil pressure shock absorbers (30) are fixedly connected with the two secondary transverse shock absorber seats (15) in a one-to-one correspondence mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319238.1U CN211308582U (en) | 2019-12-20 | 2019-12-20 | Built-in trailer bogie of high-speed motor train unit axle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922319238.1U CN211308582U (en) | 2019-12-20 | 2019-12-20 | Built-in trailer bogie of high-speed motor train unit axle box |
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| Publication Number | Publication Date |
|---|---|
| CN211308582U true CN211308582U (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319238.1U Withdrawn - After Issue CN211308582U (en) | 2019-12-20 | 2019-12-20 | Built-in trailer bogie of high-speed motor train unit axle box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877624A (en) * | 2019-12-20 | 2020-03-13 | 中车长春轨道客车股份有限公司 | Built-in trailer bogie of high-speed motor train unit axle box |
-
2019
- 2019-12-20 CN CN201922319238.1U patent/CN211308582U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110877624A (en) * | 2019-12-20 | 2020-03-13 | 中车长春轨道客车股份有限公司 | Built-in trailer bogie of high-speed motor train unit axle box |
| CN110877624B (en) * | 2019-12-20 | 2024-04-16 | 中车长春轨道客车股份有限公司 | Axle box built-in trailer bogie of high-speed motor train unit |
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