CN217598586U - Brake device, bogie and railway wagon - Google Patents

Abstract

The utility model provides a braking device, a bogie and a railway wagon, wherein the braking device comprises a first brake beam and a second brake beam, and brake shoes are arranged at the two ends of the first brake beam and the second brake beam; the driving piece comprises a seat body and a push rod which is telescopically connected with the seat body, and the seat body is fixedly connected with the brake beam; the transmission assembly comprises a lever assembly and a connecting rod assembly, the lever assembly comprises a first lever and a second lever, the connecting rod assembly comprises a first connecting rod and a second connecting rod, the middle of the first brake beam is hinged to the middle of the first lever, the middle of the second brake beam is hinged to the middle of the second lever, the first lever is hinged to the push rod, the first end of the first connecting rod is connected with the seat body, the first connecting rod is hinged to the upper end of the second lever, and the second connecting rod is hinged to the lower end of the first lever and the lower end of the second lever respectively. Through the technical scheme provided by the application, the problem that the railway wagon in the related technology cannot be accurately controlled can be solved.

Description

Brake device, bogie and railway wagon

Technical Field

The utility model relates to a railway freight car technical field particularly, relates to a arresting gear, bogie and railway freight car.

Background

In order to ensure the running safety of the railway wagon, a braking device is required to realize the braking and the relieving of the railway wagon, an integrated braking system is an advanced basic braking arrangement mode, and the integrated braking system has the characteristics of extremely low requirement on installation space, light weight and high transmission efficiency and is the development direction of the basic braking of the modern wagon.

In the related art, the integrated brake system is to integrate and mount a brake cylinder, a brake modulator, and a brake lever of a conventional vehicle body arrangement to a bogie. The vehicle controls the electromagnetic valve or relieves the action of the electromagnetic valve according to the received instruction to realize direct charging and braking of the brake cylinder and relief of exhaust of the brake cylinder by the auxiliary reservoir. Compressed air is the source of braking force generation, but air is not the transmission medium for braking commands. The railway freight car pipe continuously charges air to the auxiliary air cylinder, the railway freight car pipe does not exhaust air when braking, and then relieving and re-braking of the railway freight car are achieved.

However, the integrated brake system in the related art uses compressed air as a power source and a brake cylinder as an actuating mechanism, and due to the compressibility of an air medium, the problem of slow brake force adjustment speed exists, which is not favorable for precise control of a railway wagon.

SUMMERY OF THE UTILITY MODEL

The utility model provides a arresting gear, bogie and railway freight car to solve the problem that railway freight car among the correlation technique can not realize accurate control.

According to an aspect of the present invention, there is provided a brake apparatus, the brake apparatus including: the brake assembly comprises a first brake beam and a second brake beam which are arranged at intervals, and brake shoes are arranged at two ends of the first brake beam and the second brake beam; the driving piece comprises a seat body and a push rod which is in telescopic connection with the seat body, and the seat body is fixedly connected with the first brake beam or the second brake beam; the transmission assembly comprises a lever assembly and a connecting rod assembly, the lever assembly comprises a first lever and a second lever which are arranged at intervals, the connecting rod assembly comprises a first connecting rod and a second connecting rod which are arranged at intervals, the middle part of a first brake beam is hinged to the middle part of the first lever, the middle part of a second brake beam is hinged to the middle part of the second lever, the upper end of the first lever is hinged to a push rod, the first end of the first connecting rod is connected with the seat body, the second end of the first connecting rod is hinged to the upper end of the second lever, and the two ends of the second connecting rod are hinged to the lower end of the first lever and the lower end of the second lever respectively.

Further, the driving member includes an electric cylinder.

Further, the driver comprises an electric push rod.

Furthermore, the braking device also comprises a mounting seat, the mounting seat is fixedly connected to the first brake beam or the second brake beam, and the driving piece is fixedly connected with the mounting seat.

Further, the braking device also comprises a driver which is electrically connected with the driving piece.

Further, the second link includes a brake adjuster.

Furthermore, the first brake beam and the second brake beam are of isosceles triangle structures, brake shoes are arranged at two ends of the bottom edges of the first brake beam and the second brake beam, the middle of the first lever is hinged with the top point of the first brake beam, and the middle of the second lever is hinged with the top point of the second brake beam.

Furthermore, the first brake beam comprises a first frame and a first cross beam, the first frame is of an isosceles triangle structure, two ends of the first cross beam are respectively connected with the top point and the bottom edge of the first frame, and the middle part of the first lever is hinged with the first cross beam; the second brake beam comprises a second frame and a second cross beam, the second frame is of an isosceles triangle structure, two ends of the second cross beam are respectively connected with the top point and the bottom edge of the second frame, and the middle part of the second lever is hinged with the second cross beam.

According to the utility model discloses an on the other hand provides a bogie, and the bogie includes: a side frame; the brake device, the first brake beam and the second brake beam of the brake device are movably arranged on the side frame, and the brake device is the brake device provided above.

According to the utility model discloses a still another aspect provides a railway freight car, railway freight car includes the above-mentioned bogie that provides.

Use the technical scheme of the utility model, arresting gear includes brake assembly, driving piece and drive assembly, use this arresting gear, when the relative pedestal of the push rod of driving piece stretches out, the push rod drives rather than the first lever of articulated and removes, and then first lever drives rather than middle part articulated first brake beam and removes, the brake shoe that is located first brake beam both ends is followed first brake beam and is removed towards the direction of being close to railway freight car's wheel, when the brake shoe can not continue to remove with the wheel contact, the push rod continues to drive rather than the upper end of articulated first lever and removes, at this moment, the lower extreme of first lever is removed towards the direction opposite rather than upper end moving direction, the lower extreme of first lever passes through the lower extreme that the second connecting rod drove the second lever and removes, the second lever drives rather than middle part articulated second brake beam and removes, the brake shoe that is located the brake shoe at second brake beam both ends is followed the second brake beam and is removed towards the direction of being close to railway's wheel, until the brake shoe and wheel contact, the brake shoe of brake shoe between the brake shoe and the wheel of utilizing the both ends of first brake beam and the second brake beam. When the push rod of the driving part retracts relative to the seat body, the brake assembly and the transmission assembly are opposite to the moving direction, brake shoes at two ends of the first brake beam and brake shoes at two ends of the second brake beam can be separated from wheels, and accordingly vehicle alleviation is achieved, and details are not repeated. Because with driving piece and first brake beam or second brake beam fixed connection, drive the braking subassembly through the driving piece and remove the subassembly and remove the braking that realizes the vehicle and alleviate, and then need not adopt compressed air as the power source, the brake cylinder is as actuating mechanism, can realize quick adjustment braking force to can realize railway freight car's accurate control.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of a braking device provided by an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a brake assembly; 11. a first brake beam; 12. a second brake beam; 13. brake shoes;

20. a drive member;

30. a transmission assembly; 31. a lever assembly; 311. a first lever; 312. a second lever; 32. a connecting rod assembly; 321. a first link; 322. a second link; 323. a brake adjuster.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, the embodiment of the present invention provides a brake apparatus, the brake apparatus includes a brake assembly 10, a driving member 20 and a transmission assembly 30, the brake assembly 10 includes a first brake beam 11 and a second brake beam 12 disposed at an interval, brake shoes 13 are disposed at both ends of the first brake beam 11 and the second brake beam 12, the driving member 20 includes a seat body and a push rod telescopically connected to the seat body, the seat body is fixedly connected to the first brake beam 11 or the second brake beam 12, the transmission assembly 30 includes a lever assembly 31 and a connecting rod assembly 32, the lever assembly 31 includes a first lever 311 and a second lever 312 disposed at an interval, the connecting rod assembly 32 includes a first connecting rod 321 and a second connecting rod 322 disposed at an interval, a middle portion of the first brake beam 11 is hinged to a middle portion of the first lever 311, a middle portion of the second brake beam 12 is hinged to a middle portion of the second lever 312, an upper end of the first lever 311 is hinged to the push rod, a first end of the first connecting rod 321 is connected to a second end of the second lever 321, and a lower end of the second lever 322 are hinged to a lower end of the second lever 312.

Use the technical scheme of the utility model, arresting gear includes brake assembly 10, driving piece 20 and transmission assembly 30, use this arresting gear, when the relative pedestal of the push rod of driving piece 20 stretches out, the push rod drives rather than articulated first lever 311 and removes, and then first lever 311 drives rather than middle part articulated first brake beam 11 and removes, brake shoe 13 that is located first brake beam 11 both ends follows first brake beam 11 and moves towards the direction that is close to railway freight car's wheel, when brake shoe 13 can not continue to move with the wheel contact, the push rod continues to drive rather than articulated first lever 311's upper end and moves, at this moment, the lower extreme of first lever 311 moves towards the direction opposite rather than upper end moving direction, the lower extreme of first lever 311 passes through second connecting rod 322 and drives the lower extreme of second lever 312 and moves, second lever 312 drives rather than middle part articulated second brake beam 12 and moves, brake shoe 13 that is located second brake beam 12 both ends follows second brake beam and moves towards the direction that is close to railway car's wheel, until brake shoe 13 and wheel contact, utilize the friction between the both ends of first brake beam 11 and the second brake beam 12 to realize. When the push rod of the driving member 20 retracts relative to the seat, the brake assembly 10 and the transmission assembly 30 both move in opposite directions, so that the brake shoes 13 at the two ends of the first brake beam 11 and the two ends of the second brake beam 12 can be separated from the wheel, and the vehicle can be relieved, which is not described herein again. Because with driving piece 20 and first brake beam 11 or second brake beam 12 fixed connection, drive braking subassembly 10 and removal subassembly through driving piece 20 and remove the braking that realizes the vehicle and alleviate, and then need not adopt compressed air as the power source, the brake cylinder is as actuating mechanism, can realize quick adjustment brake force to can realize railway freight car's accurate control, and can adapt to the needs of future train intelligent development.

It should be noted that if the drag between the first brake beam 11 and the side frame is less than the drag between the second brake beam 12 and the side frame, the first brake beam 11 moves before the second brake beam 12, and the specific moving process is the above-mentioned process. If the resistance between the first brake beam 11 and the side frame is larger than the resistance between the second brake beam 12 and the side frame, the lower end of the first lever 311 drives the lower end of the second lever 312 to move through the second connecting rod 322, the second lever 312 drives the second brake beam 12 hinged with the middle part thereof to move, when the second brake beam 12 can not move continuously, the second lever 312 can not move continuously, similarly, the second end of the first lever 311 can not move continuously, the first lever 311 drives the first brake beam 11 to move, and the second brake beam 12 moves before the first brake beam 11.

In the present embodiment, the first brake beam 11 and the second brake beam 12 both extend in the transverse direction, the first lever 311 and the second lever 312 both extend in the vertical direction, the first brake beam 11 and the second brake beam 12 are disposed on both sides of a bolster of a bogie of a railway wagon, the first lever 311 and the second lever 312 are also disposed on both sides of a bolster of a bogie of a railway wagon, and the first link 321 and the second link 322 extend in the transverse direction. Here, the horizontal direction in this embodiment may be at an angle, for example, 0 ° to 5 °, and the vertical direction may be at an angle, for example, 0 ° to 5 °, to the vertical direction.

Specifically, the hinge joints in this embodiment are all hinged through pin shafts.

The brake shoe 13 is of an arc structure, and the arc structure can enable the brake shoe 13 to be matched with the wheel in shape, so that the contact area of the brake shoe 13 and the wheel is increased, and the braking speed of a railway wagon is increased.

In the first embodiment, the driving member 20 includes an electric cylinder. The electric cylinder comprises a first motor, a first speed reducer and a first lead screw, wherein a motor shaft of the first motor is in driving connection with the first speed reducer, the first speed reducer is in driving connection with the first lead screw, and the first lead screw is in driving connection with the push rod. Can produce drive power through first motor to utilize first reduction gear to enlarge the drive power that first motor produced, drive power after will enlargiing through first lead screw converts linear motion's driving force, thereby utilizes this driving force to realize stretching out and retracting of push rod.

The braking force is generated by adopting a motor driving mode, and the purpose of generating the braking force by directly driving the motor is achieved, so that the weathering removal of the railway wagon braking system is realized, the braking force can be quickly and accurately adjusted, and the failure of the braking system caused by the leakage of compressed air can be avoided.

Specifically, the first motor may be a servo motor, or may be a stepping motor.

In this embodiment, the brake apparatus further includes a mounting bracket fixedly attached to either the first brake beam 11 or the second brake beam 12, and the driver 20 is fixedly attached to the mounting bracket. The use of a mounting seat makes it possible to secure the driver 20 and to protect the driver 20.

In addition, the electric cylinder is arranged on the first brake beam 11 or the second brake beam 12, so that integrated braking in an electric braking mode is realized, and the electric brake has the advantages of compact structure, small installation space, light weight, high transmission efficiency and the like.

It should be noted that the mounting bracket is fixedly connected to the first brake beam 11.

In this embodiment, the braking device further comprises an actuator, which is electrically connected to the driver 20. The driver can receive a control command generated by a control system of the railway wagon, generate current according to the control command, and drive the servo motor to rotate through the current.

The conventional air brake system simultaneously adopts compressed air as an energy and signal transmission medium, and is limited by the physical characteristics of the air medium, so that the railway wagon generates large longitudinal impulse, and a series of problems such as fatigue fracture of a key bearing piece and the like are caused. In the embodiment, electricity is adopted as a signal medium and an energy medium at the same time, so that the system complexity of the railway wagon is reduced, the brake synchronism and consistency of the whole railway wagon are enhanced, and the longitudinal impulse of the vehicle is greatly reduced.

As shown in fig. 1, the second link 322 includes a brake adjuster 323. The brake adjuster 323 drives the first lever 311 and the second lever 312 connected with the brake adjuster 323 to move, so that the distance between the brake shoe 13 and the wheel can be adjusted, and the distance between the brake shoe 13 and the wheel is always kept in a reasonable range.

As shown in FIG. 1, the first brake beam 11 and the second brake beam 12 are both isosceles triangle structures, brake shoes 13 are disposed at two ends of the bottom side of the first brake beam 11 and the second brake beam 12, the middle of the first lever 311 is hinged to the top of the first brake beam 11, and the middle of the second lever 312 is hinged to the top of the second brake beam 12. The first brake beam 11 and the second brake beam 12 adopting the structure can be hinged with the first lever 311 by utilizing the top end of the isosceles triangle respectively, and the brake shoe 13 is arranged by utilizing the bottom edge of the isosceles triangle, so that the brake shoe structure has the advantages of simple structure and convenience in processing.

In this embodiment, the middle of the first lever 311 is hinged to the vertex of the first brake beam 11, and the middle of the second lever 312 is hinged to the vertex of the second brake beam 12, that is, the middle of the first lever 311 is hinged to the vertex of the first brake beam 11 in an isosceles triangle structure, and the middle of the second lever 312 is hinged to the vertex of the second brake beam 12 in an isosceles triangle structure.

The vertex of the isosceles triangle refers to the intersection point of two waists of the isosceles triangle, and the bottom side of the isosceles triangle refers to the long side of the isosceles triangle.

As shown in fig. 1, the first brake beam 11 includes a first frame and a first beam, the first frame is an isosceles triangle structure, two ends of the first beam are respectively connected with a vertex and a bottom edge of the first frame, a middle portion of the first lever 311 is hinged to the first beam, the second brake beam 12 includes a second frame and a second beam, the second frame is an isosceles triangle structure, two ends of the second beam are respectively connected with a vertex and a bottom edge of the second frame, and a middle portion of the second lever 312 is hinged to the second beam. Through set up first crossbeam in first frame, set up the second crossbeam in the second frame to adopt the middle part of first lever 311 to articulate mutually with first crossbeam, the middle part of second lever 312 articulates mutually with the second crossbeam, has the advantage of being convenient for processing and installation.

The embodiment of the present invention provides a braking device, and the difference between the embodiment two and the embodiment one lies in that, in the embodiment two, the driving member 20 includes an electric push rod. The electric push rod comprises a second motor, a second speed reducer and a second lead screw, wherein a motor shaft of the second motor is in driving connection with the second speed reducer, the second speed reducer is in driving connection with the second lead screw, and the second lead screw is in driving connection with the push rod. The driving force can be generated by the second motor, the driving force generated by the second motor is amplified by the second speed reducer, the amplified driving force is converted into a linear movement pushing force by the second lead screw, and the pushing force is used for realizing extension and retraction of the push rod.

The embodiment three of the utility model provides a bogie, bogie include side bearer and arresting gear, and arresting gear's first brake beam 11 and second brake beam 12 are all movably to be set up in the side bearer, and arresting gear is the arresting gear that the aforesaid provided. By adopting the bogie, the driving part 20 is fixedly connected with the first brake beam 11 or the second brake beam 12, the driving part 20 drives the brake component 10 and the moving component to move to realize braking and relieving of a vehicle, and further compressed air is not needed to be adopted as a power source, and the brake cylinder is used as an actuating mechanism, so that the braking force can be quickly adjusted, and the railway wagon can be accurately controlled.

Specifically, one bogie comprises two side frames, one side frame is arranged on the outer side of one end of a first brake beam 11 corresponding to one end of a second brake beam 12, the first side frame is arranged on the outer side of the other end of the first brake beam 11 corresponding to the other end of the second brake beam 12, avoidance holes are formed in the middle portions of the two side frames, and two ends of a bolster are inserted into the avoidance holes of the side frames respectively. And, the side of two side bearer towards brake shoe 13 all is provided with the spout, and the both ends of first brake beam 11 and second brake beam 12 all are provided with the slider, and the slider is located the outside of brake shoe and one-to-one sets up, and each slider is all movably to be inserted and is located corresponding spout. By adopting the structure, the sliding block is guided by the sliding groove, and then the first brake beam 11 and the second brake beam 12 move along the direction of the sliding groove, so that the vehicle can be braked and released stably.

The embodiment of the utility model provides a fourth provides a railway freight car, railway freight car includes the above-mentioned bogie that provides. By applying the railway wagon, the driving part 20 is fixedly connected with the first brake beam 11 or the second brake beam 12, the driving part 20 drives the brake component 10 and the moving component to move to realize braking and relieving of a vehicle, compressed air is not needed to be used as a power source, the brake cylinder is used as an executing mechanism, and the braking force can be quickly adjusted, so that the railway wagon can be accurately controlled. And the braking force is generated by adopting a motor driving mode, so that the aim of generating the braking force by directly driving the motor is fulfilled, the weathering removal of the railway wagon braking system is realized, the braking force can be quickly and accurately adjusted, and the brake system fault caused by the leakage of compressed air can be avoided.

In this embodiment, railway freight car includes locomotive unit and carriage unit, through the cable intercommunication between each carriage unit, be provided with the battery at carriage unit, adopt the battery to charge and the power supply according to the control command that the control system of vehicle sent, adopt the battery distribution to charge, the system architecture of distribution power supply, the current impact to the bus when can effectively reduce full-row braking effect, and can effectively deal with unexpected circumstances such as train separation, and can adapt to the limited application scene of the excessive equal power supply of train.

Use the utility model provides a arresting gear, bogie and railway freight car have following beneficial effect:

(1) Because the driving part 20 is fixedly connected with the first brake beam 11 or the second brake beam 12, the driving part 20 drives the brake component 10 and the moving component to move so as to realize braking and relieving of the vehicle, compressed air is not needed to be used as a power source, and the brake cylinder is used as an executing mechanism, so that the braking force can be quickly adjusted, the precise control of a railway wagon can be realized, and the requirement on intelligent development of a future train can be met. And the braking force is generated by adopting a motor driving mode, so that the aim of generating the braking force by directly driving the motor is fulfilled, the weathering removal of the railway wagon braking system is realized, the braking force can be quickly and accurately adjusted, and the failure of the braking system caused by the leakage of compressed air can be avoided. In addition, because electricity is adopted as a signal and energy medium at the same time, the system complexity of the railway wagon is reduced, and the synchronism and consistency of the braking of the whole railway wagon are enhanced, so that the longitudinal impulse of the vehicle is greatly reduced;

(2) An electric cylinder or an electric push rod is adopted to drive the first brake beam 11 and the second brake beam 12 to complete braking and releasing of the vehicle, integrated braking in an electric braking mode is achieved, and the integrated brake has the advantages of compact structure, small installation space, light weight, high transmission efficiency and the like;

(3) The railway wagon comprises a locomotive unit and carriage units, the carriage units are communicated through cables, storage batteries are arranged in the carriage units, the storage batteries can be used for charging and supplying power according to control instructions sent by a control system of a vehicle, the storage batteries are used for distributed charging, and the system structure of distributed power supply can effectively reduce current impact on a bus during full-train braking action, effectively deal with unexpected situations such as train separation and adapt to the situation that the power supply of a train is excessively equal and limited.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A brake device, characterized in that the brake device comprises:

the brake assembly (10) comprises a first brake beam (11) and a second brake beam (12) which are arranged at intervals, and brake shoes (13) are arranged at two ends of the first brake beam (11) and the second brake beam (12);

the driving piece (20) comprises a seat body and a push rod which is telescopically connected with the seat body, and the seat body is fixedly connected with the first brake beam (11) or the second brake beam (12);

the transmission assembly (30) comprises a lever assembly (31) and a connecting rod assembly (32), the lever assembly (31) comprises a first lever (311) and a second lever (312) which are arranged at intervals, the connecting rod assembly (32) comprises a first connecting rod (321) and a second connecting rod (322) which are arranged at intervals, the middle part of the first brake beam (11) is hinged with the middle part of the first lever (311), the middle part of the second brake beam (12) is hinged with the middle part of the second lever (312), the upper end of the first lever (311) is hinged with the push rod, the first end of the first connecting rod (321) is connected with the seat body, the second end of the first connecting rod (321) is hinged with the upper end of the second lever (312), and the two ends of the second connecting rod (322) are hinged with the lower end of the first lever (311) and the lower end of the second lever (312) respectively;

the second link (322) includes a brake adjuster (323).

2. A braking device according to claim 1, characterized in that the drive member (20) comprises an electric cylinder.

3. A braking device according to claim 1, characterised in that the drive member (20) comprises an electric push rod.

4. A brake arrangement according to claim 1, further including a mounting fixedly connected to either the first brake beam (11) or the second brake beam (12), the actuator member (20) being fixedly connected to the mounting.

5. A braking device according to claim 1, characterized in that it further comprises an actuator, which is electrically connected to the driving member (20).

6. A brake device according to claim 1, characterized in that said first brake beam (11) and said second brake beam (12) are both of isosceles triangle configuration, said brake shoes (13) are provided at both ends of the bottom side of said first brake beam (11) and said second brake beam (12), the middle of said first lever (311) is hinged to the top of said first brake beam (11), the middle of said second lever (312) is hinged to the top of said second brake beam (12).

7. The brake apparatus according to claim 6,

the first brake beam (11) comprises a first frame and a first cross beam, the first frame is of an isosceles triangle structure, two ends of the first cross beam are respectively connected with the top point and the bottom edge of the first frame, and the middle part of the first lever (311) is hinged with the first cross beam;

the second brake beam (12) comprises a second frame and a second cross beam, the second frame is of an isosceles triangle structure, two ends of the second cross beam are respectively connected with the top point and the bottom edge of the second frame, and the middle of the second lever (312) is hinged with the second cross beam.

8. A bogie, characterized in that the bogie comprises:

a side frame;

brake rigging, the first brake beam (11) and the second brake beam (12) of said brake rigging being movably mounted to said side frame, said brake rigging being according to any one of claims 1-7.

9. A railway wagon, comprising the bogie as claimed in claim 8.

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