CN209921324U

CN209921324U - Rail vehicle and axle and bridge assembly thereof

Info

Publication number: CN209921324U
Application number: CN201920187783.7U
Authority: CN
Inventors: 刘洋; 张月军; 冯军; 张会杰; 闫转芳
Original assignee: CRRC Qingdao Sifang Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd
Priority date: 2019-02-02
Filing date: 2019-02-02
Publication date: 2020-01-10
Anticipated expiration: 2029-02-02

Abstract

The utility model discloses a rail vehicle's axle bridge assembly, including the axle bridge body and be used for restricting the vertical backstop piece of the maximum compression capacity of rail vehicle framework to a series of spring, the axle bridge body includes the axle body, and the both ends of axle body all are provided with the spindle nose, and the spindle nose is upwards protruding, and the outside of spindle nose is provided with the axle journal, and axle bridge assembly still includes, and vertical backstop piece demountable installation is in the top of spindle nose; the vertical stop block is arranged in the axle and bridge assembly, the framework can compress the primary spring to move downwards when the axle and bridge assembly vibrates during running, the framework abuts against the vertical stop block in the axle and bridge assembly before the framework compresses the primary spring to move downwards, and the framework can not continue to move downwards so as to avoid direct collision between the framework and the axle body, namely the vertical stop block has the function of avoiding downward impact of a vehicle, and the framework directly impacts the axle and bridge to protect the axle body; and vertical backstop piece demountable installation is in the top of spindle nose, can dismantle vertical backstop piece from the spindle nose, the vertical backstop piece of renewal.

Description

Rail vehicle and axle and bridge assembly thereof

Technical Field

The utility model relates to a rail vehicle technical field, in particular to rail vehicle and axle assembly thereof.

Background

With the rapid development of urban rail transit, low-floor vehicles become an important choice for urban traffic due to the advantages of economy, environmental protection, convenience, comfort and the like. The axle bridge is installed on the bogie of low-floor vehicle, and through adopting recessed formula structure, makes vehicle floor face more be close ground, guarantees convenience and the travelling comfort that the passenger took.

The axle bridge is used as an important part of the vehicle bogie and supports the weight of the whole vehicle body, and the independent wheels connected with the two ends of the axle bridge independently rotate and drive the vehicle to run under the drive of the motor. A series of springs are arranged between the axle bridge and the vehicle body to play a role in buffering and damping in the running process of the vehicle, and practical application proves that when vibration is overlarge, the springs are too large in compression amount due to overlarge impact force, and the vehicle body can collide with the axle bridge.

The axle bridge is locally easy to wear due to multiple times of collision, so that the mechanical property of the structure of the axle bridge is poor, and the service life of the axle bridge is seriously influenced.

Therefore, how to improve the above-mentioned defects in the prior art and prolong the service life of the axle bridge is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rail vehicle's axle assembly, including the axle bridge body, the axle bridge body is including axle body and spindle nose, the both ends of axle body all are provided with the spindle nose, the spindle nose makes progress the arch, the outside of spindle nose is provided with the axle journal, the axle bridge assembly is still including vertical backstop piece for the maximum compression volume of restriction rail vehicle framework to a series of spring, vertical backstop piece demountable installation in the top of spindle nose.

The utility model discloses in be provided with vertical backstop piece in the axle bridge assembly that provides, when rail vehicle is in the running state, because the vibration reason, the framework will compress a series of spring downstream, in a series of spring downstream process of framework compression, the framework offsets earlier than the vertical backstop piece in the axle bridge assembly and leans on, when the two supports and leans on, the framework will not continue downstream again, when the effect of vertical backstop piece is avoiding the vehicle to strike downwards promptly, the direct striking axle bridge of framework, and then avoid framework and axle body direct collision mutually, realize the purpose of protection axle body.

The vertical stopping block in the utility model can be detachably arranged at the top of the shaft head, when the vertical stopping block is worn and can not be normally used, the vertical stopping block can be detached from the shaft head, and a new vertical stopping block can be replaced; thus, the problem that the axle bridge body is worn to cause loss is solved.

Optionally, a threaded hole is formed in the top of the spindle head, a through hole extending in the vertical direction is formed in the vertical stopping block from top to bottom, the through hole comprises a large-diameter hole section and a small-diameter hole section which are connected through a step surface, the axle and bridge assembly further comprises a connecting bolt, a screw section of the connecting bolt penetrates through the through hole to be connected with the threaded hole, and the head of the connecting bolt completely sinks into the inside of the large-diameter hole section.

Optionally, both ends of the axle body are provided with a first supporting platform and a second supporting platform, the first supporting platform and the second supporting platform respectively extend forwards or backwards along the longitudinal direction, the axle bridge assembly further comprises a spring assembly, and each spring in the spring assembly is respectively supported on both sides of the first supporting platform and the second supporting platform.

Optionally, the first supporting platform and the second supporting platform are both provided with mounting holes with upward openings, wear-resistant bushings are detachably mounted in the mounting holes, and springs in the primary spring assembly are mounted in the wear-resistant bushings.

Optionally, the mounting hole is the through-hole structure, and it includes the macropore section and the aperture section of connecting through connecting the face, wear-resisting bush includes the barrel and certainly the outside level of barrel extends the limit of bending, during the installation, the limit of bending supports and leans on connect the face, the barrel with aperture section interference fit.

Optionally, the axle body is further processed with a ground wire connecting hole, and a free end portion of a ground wire connected with the vehicle is mounted inside the ground wire connecting hole.

Optionally, the ground wire connecting hole is a threaded hole, and the conductive end of the ground wire is mounted in the threaded hole through a screw.

Optionally, a positioning boss is arranged at the top of the shaft head and used for limiting the position of the vertical stop block, and the positioning boss is located on one side close to the shaft neck.

Optionally, the axle body and the axle heads at two ends of the axle body form a U-shaped structure.

Furthermore, the utility model also provides a rail vehicle, including framework and axle assembly, the axle assembly be above-mentioned arbitrary axle assembly.

For other structures of the rail vehicle, please refer to the prior art, which is not described herein.

Drawings

Fig. 1 is a schematic structural view of an axle assembly of a railway vehicle according to the present invention;

FIG. 2 is a top view of the axle bridge assembly of FIG. 1;

fig. 3 is a partial sectional view of a-a in fig. 2.

Wherein:

1-a shaft body; 1 a-mounting holes; 2-a ground wire connecting hole; 3-vertical stop block; 4-connecting bolts; 5-journal; 6-shaft head; 61-positioning the boss; 8-wear resistant lining; bending sections of 81; 82-a cylinder body; 91-a first support platform; 92-second support platform.

Detailed Description

It should be noted that, here, the direction toward the vehicle head is front with reference to the running of the rail vehicle, and correspondingly, the opposite direction is rear. The lateral direction as referred to herein means the vehicle width direction, and the longitudinal direction is the vehicle length direction. The above definitions of directional terms are provided herein for brevity and clarity of description.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an axle assembly of a railway vehicle according to the present invention; FIG. 2 is a top view of the axle bridge assembly shown in FIG. 1.

The rail vehicle comprises a framework, an axle bridge assembly, a primary spring, a secondary spring, wheels and other main components, wherein the axle bridge assembly comprises an axle bridge body, the axle bridge body further comprises a shaft neck 5, shaft heads 6 and an axle body 1, the two ends of the axle body 1 are respectively provided with the shaft heads 6, and the axle body 1 and the shaft heads 6 positioned at the two ends of the axle body roughly form a U-shaped structure.

Specifically, the stub shaft 6 is upwardly convex with respect to the shaft body 1. The axle journal 5 is located on the outer side wall of the axle head 6 and extends in the transverse direction, and the wheel is mounted on the axle journal 5. The length of elongation of the axle journal 5, the length of the axle body 1, and the height of the axle head 6 may be determined according to the specific railway vehicle and will not be described in detail herein.

The utility model provides an axle assembly still includes vertical backstop piece 3 for the restriction rail vehicle is to the maximum compression volume of a series of spring, that is to say, vertical backstop piece 3 can restrict the maximum displacement of framework downstream, when the framework downstream, collides with axle assembly's vertical backstop piece 3 earlier.

The utility model discloses in be provided with vertical backstop piece 3 in the axle bridge assembly that provides, when rail vehicle is in the running state, because the vibration reason, the framework will compress a spring downstream, in the frame compression spring downstream process, the framework leans on in advance in the axle bridge assembly vertical backstop piece 3 offsets, when the two supports and leans on, the framework will not continue downstream again, when the effect of vertical backstop piece is avoiding the vehicle to strike downwards promptly, the direct striking axle bridge of framework, and then avoid framework and axle body 1 direct collision mutually, realize the purpose of protection axle body 1.

In addition, the vertical stopping block 3 in the utility model can be detachably arranged at the top of the shaft head 6, when the vertical stopping block 3 is worn and can not be normally used, the vertical stopping block 3 can be detached from the shaft head 6, and a new vertical stopping block 3 is replaced; thus, the problem that the axle bridge body is worn to cause loss is solved.

In a specific embodiment, a threaded hole is formed in the top of the spindle head 6, a through hole extending in the vertical direction is formed in the vertical stop block 3, the through hole comprises a large-diameter hole section and a small-diameter hole section which are connected through a step surface from top to bottom, and the through hole is of a counter bore structure.

The axle and bridge assembly further comprises a connecting bolt 4, the connecting bolt 4 comprises a head and a screw section, the outer diameter of the head is smaller than the inner diameter of the large-diameter hole section of the through hole and larger than the inner diameter of the small-diameter hole section, and the outer diameter of the screw section of the connecting bolt 4 is smaller than the diameter of the small-diameter hole section. Thus, when the connecting bolt is installed, the screw section of the connecting bolt 4 can pass through the small-diameter hole section of the through hole to be connected inside the threaded hole, and the head of the connecting bolt 4 abuts against the step surface and can be completely positioned inside the large-diameter hole section.

That is, the height of the head of the connecting bolt 4 is smaller than the length of the large-diameter hole section, so that the head of the connecting bolt 4 can be completely positioned in the large-diameter hole, and the collision with a framework and the damage to the framework are avoided.

The connection mode of the vertical stop block 3 and the shaft head 6 in the embodiment is simple in structure and easy to realize.

Of course, the manner of securing the vertical stop to the stub shaft 6 is not limited to that described herein, but may be other manners, such as spot welding or by adhesive or other means.

Further, the shaft body 1 is further improved as follows in order to achieve a reliable mounting of a series of springs.

In the above embodiments, the two end portions of the axle body 1 are respectively provided with the first supporting platform 91 and the second supporting platform 92, the first supporting platform 91 and the second supporting platform 92 respectively extend forwards or backwards along the longitudinal direction, the axle bridge assembly further includes a series of spring components, and each spring in the series of spring components is respectively supported on the first supporting platform 91 and the second supporting platform 92 at two sides. Typically, a series of spring assemblies includes four vertically extending springs supported by the two first support platforms 91 and the two second support platforms 92, respectively.

Namely, each supporting platform is provided with a vertical spring, the vertical springs on the two first supporting platforms 91 are symmetrical about the central longitudinal plane of the frame, the vertical springs on the two second supporting platforms 92 are symmetrical about the central longitudinal plane of the frame, and meanwhile, the vertical springs on the first supporting platforms 91 at the same end part and the vertical springs on the second supporting platforms 92 are symmetrical about the central transverse plane of the axle body 1.

A vertical spring may be mounted in the following manner.

Referring to fig. 3, fig. 3 is a partial sectional view of a-a in fig. 2.

Specifically, the first supporting platform 91 and the second supporting platform 92 may be respectively provided with an installation hole 1a with an upward opening, the installation hole 1a is detachably installed with the wear-resistant bushing 8, and the vertical spring in the primary spring assembly is installed inside the wear-resistant bushing 8. The wear bushing 8 may be mounted inside the mounting hole with an interference fit.

Mounting hole 1a is the through-hole structure, and it includes the macropore section and the micropore section of connecting through connecting the face, and wear-resisting bush 8 includes barrel 82 and from the outside level extension's of barrel 82 limit 81 of bending, and during the installation, the limit 81 of bending supports and leans on the connection face, and the limit of bending of wear-resisting bush 8 can play the installation limiting displacement promptly to barrel 82 and micropore section interference fit are favorable to realizing the reliable installation of wear-resisting bush 8. When the wear-resistant lining 8 is worn and needs to be replaced, the wear-resistant lining 8 can be punched out from the lower end opening of the through hole by using a tool, so that the replacement efficiency of the wear-resistant lining 8 is facilitated.

The ground return circuit is required to be established during the running process of the vehicle so as to ensure the running safety of the vehicle.

In a specific embodiment, the shaft body 1 is further processed with a ground wire connecting hole 2, one end of the ground wire is connected with the vehicle, and the other end of the ground wire is fixedly installed in the ground wire connecting hole 2, namely, the free end part of the ground wire connected with the vehicle is installed in the ground wire connecting hole 2. Static charge on the vehicle can be conducted to the axle body 1 through the grounding wire, and then is conducted to the shaft neck 5 and the wheels from the axle body 1, and further transmitted to the track, so that the running safety of the vehicle is ensured.

Specifically, the ground wire connection hole 2 may be a threaded hole to which a conductive wire of the ground wire is mounted by a screw. The connection mode is simple and easy.

In order to facilitate the quick installation of the vertical stopping block 3, the top of the shaft head 6 is provided with a positioning boss 61 for limiting the position of the vertical stopping block 3, and the positioning boss 61 is positioned on one side close to the shaft neck 5. During the installation, vertical backstop piece 3 supports to lean on location boss 61, and then can realize the quick location of mounting hole and screw hole on the vertical backstop piece 3.

The axle body may be integrally formed by forging. The vertical stop block 3 in the above embodiments can be made of steel material of Q345, and is rustproof and relatively low in cost after surface treatment.

On the basis of above-mentioned axle assembly, the utility model also provides a rail vehicle, including framework and axle assembly, the axle assembly becomes above-mentioned arbitrary axle assembly.

The rail vehicle has the axle assembly, so the technical effect of the axle assembly is also achieved.

It is right above the utility model provides a rail vehicle and axle assembly thereof have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. The utility model provides a rail vehicle's axle bridge assembly, includes the axle bridge body, its characterized in that, the axle bridge body is including axle body (1) and spindle nose (6), the both ends of axle body (1) all are provided with spindle nose (6), spindle nose (6) are upwards protruding, the outside of spindle nose (6) is provided with axle journal (5), axle bridge assembly is still including vertical backstop piece (3) for the biggest compressive capacity of restriction rail vehicle framework to a series of spring, vertical backstop piece (3) demountable installation in the top of spindle nose (6).

2. Axle assembly according to claim 1, characterized in that the top of the axle head (6) is provided with a threaded hole, the vertical stop block (3) is provided with a through hole extending in the vertical direction, which through hole comprises, from top to bottom, a large-diameter hole section and a small-diameter hole section connected by a step surface, the axle assembly further comprises a connecting bolt (4), the screw section of the connecting bolt (4) passes through the through hole to connect with the threaded hole, and the head of the connecting bolt (4) is fully sunk inside the large-diameter hole section.

3. Axle assembly according to claim 1 or 2, wherein both ends of the axle body (1) are provided with a first support platform (91) and a second support platform (92), the first support platform (91) and the second support platform (92) extending longitudinally forward or backward, respectively, the axle assembly further comprising a series of spring elements, each spring of the series of spring elements being supported on both sides of the first support platform (91) and the second support platform (92), respectively.

4. Axle assembly according to claim 3, wherein each of the first support platform (91) and the second support platform (92) is provided with an upwardly open mounting hole, a wear bushing (8) is detachably mounted in the mounting hole, and the spring of the spring assembly is mounted in the wear bushing (8).

5. The axle and bridge assembly according to claim 4, wherein the mounting hole is a through hole structure comprising a large hole section and a small hole section connected by a connecting surface, the wear-resistant bushing (8) comprises a cylinder (82) and a bending edge (81) extending horizontally outwards from the cylinder, when the axle and bridge assembly is installed, the bending edge (81) abuts against the connecting surface, and the cylinder (82) is in interference fit with the small hole section.

6. Axle assembly according to claim 1, characterised in that the axle body (1) is also provided with a ground connection hole (2), the free end of the ground connection to the vehicle being mounted inside the ground connection hole (2).

7. The axle bridge assembly of claim 6, wherein the ground connection aperture is a threaded aperture, and wherein the conductive end of the ground connection is mounted to the threaded aperture by a screw.

8. Axle assembly according to claim 1 or 2, in which the top of the axle head (6) is provided with a positioning boss (61) for defining the position of the vertical stop (3), the positioning boss (61) being located on the side close to the axle journal (5).

9. Axle assembly according to claim 1 or 2, in which the axle body (1) and the axle heads (6) at its ends form a U-shaped structure.

10. A rail vehicle comprising a frame and an axle assembly, characterized in that the axle assembly is an axle assembly according to any one of claims 1 to 9.