阅读说明：本技术 吊座、轮装制动夹钳组件、轴装制动夹钳组件、转向架、轨道车辆及吊座的安装方法 (Lifting seat, wheel-mounted brake caliper assembly, shaft-mounted brake caliper assembly, bogie, rail vehicle and mounting method of lifting seat ) 是由 韩红文 朱君华 张萍 于 2019-08-28 设计创作，主要内容包括：本申请提供一种吊座、制动夹钳组件及轨道车辆。该吊座包括：基座,其具有相对设置的第一侧与第二侧；从基座的第一侧延伸凸出的转向架连接部,其用于连接至转向架；以及从基座的第二侧向远离第一侧方向延伸凸出的夹钳连接部,其用于连接至制动夹钳单元；其中,转向架连接部上具有通孔阵列及至少一条键槽或键；转向架连接部经由通孔阵列固定于转向架的纵向构架上,且转向架连接部上的至少一条键槽或键与转向架纵向构架上对应的键或键槽配合。此种设计方案,仅对制动夹钳组件中的单个零件吊座进行改进,通过键槽配合与螺接相结合的连接方式,吊座结构更紧凑,与转向架的连接强度高,能承受更大的制动扭矩,制动夹钳组件的安装稳定性高,产品可靠性更好,且无需改动现有夹钳产品,适用范围广。(The application provides a hanger bracket, braking clamp subassembly and rail vehicle. This hanging seat includes: the base is provided with a first side and a second side which are oppositely arranged; a bogie attachment portion extending from the first side of the base for attachment to a bogie; and a clamp connecting part which extends and protrudes from the second side of the base to the direction far away from the first side and is used for connecting to the brake clamp unit; the bogie connecting part is provided with a through hole array and at least one key groove or key; the bogie connecting part is fixed on a longitudinal frame of the bogie through the through hole array, and at least one key slot or key on the bogie connecting part is matched with a corresponding key or key slot on the longitudinal frame of the bogie. According to the design scheme, only a single part hanging seat in the brake clamp assembly is improved, the hanging seat is more compact in structure and high in connection strength with a bogie through a connection mode of combining key groove matching and screw connection, can bear larger brake torque, is high in installation stability of the brake clamp assembly, better in product reliability, free of changing the existing clamp product and wide in application range.)

1. A pod (100) for suspending a brake caliper unit (200) from a longitudinal frame (310) of a truck (300), comprising:

a base (110) having a first side (110 a) and a second side (110 b) disposed opposite each other;

a bogie attachment portion (120) extending from the first side (110 a) of the base (110) and projecting for attachment to a bogie (300); and

a clamp connection portion (130) extending from the second side (110 b) of the base (110) in a direction away from the first side for connection to a brake clamp unit (200);

wherein the bogie connecting part (120) is provided with a through hole array (122) and at least one key groove (121) or key; the bogie connecting part (120) is fixed on a longitudinal frame (310) of the bogie (300) through the through hole array (122), and at least one key slot (121) or key on the bogie connecting part (120) is matched with a corresponding key or key slot on the longitudinal frame (310) of the bogie (300).

2. The pod (100) of claim 1, wherein the keyway (121) or key of the truck coupler (120) is arranged at an angle relative to the base (110).

3. The hanger (100) according to claim 2, characterized in that the angle of inclination of the keyway (121) or key of the bogie connection (120) relative to the base (110) is not more than 15 °.

4. The pod (100) of claim 1, wherein the array of through-holes (122) of the truck attachment portion (120) is in an oblique or parallel arrangement with respect to the base (110).

5. The pod (100) of claim 1, wherein the through-holes of the array of through-holes (122) are arranged on both sides of a keyway (121) or key on the truck attachment portion (120).

6. The pod (100) of claim 5, wherein the array of through-holes (122) of the truck coupler (120) has adjacent through-holes on the same side of the keyway (121) or key that have their centerlines parallel to the keyway (121) or key and adjacent through-holes on opposite sides of the keyway (121) or key that have their centerlines perpendicular to the base (110).

7. The pod (100) according to claim 5, wherein the through holes of the array of through holes (122) are evenly arranged in number and/or relative position on both sides of the key slot (121) or key on the bogie connection (120).

8. The hanger (100) according to claim 1, wherein said keyway (121) or key has a rectangular cross-section.

9. The pod (100) of claim 1, wherein the truck attachment portion (120) has a plurality of key ways (121) or keys thereon; wherein a plurality of the key grooves (121) or keys are arranged in a staggered manner or in parallel.

10. The pod (100) of claim 1, wherein a center line of symmetry (X) of a brake caliper unit lever connected to the caliper connection portion (130) matches a wheel center or an axle center when the truck connection portion (120) has been installed on a truck (300).

11. The davit (100) of claim 10, wherein when the caliper connection portion (130) is connected to a wheel mounted brake caliper unit, the caliper connection portion (130) is inclined at a preset angle with respect to a mounting horizontal plane (Z) such that a center line of symmetry (X) of a lever of the wheel mounted brake caliper unit matches a wheel center.

12. The hanging seat (100) according to claim 11, characterized in that said clamp connection (130) is inclined with respect to a mounting horizontal plane (Z) by a preset angle not greater than 15 °.

13. The hanging seat (100) according to claim 12, characterized in that said clamp connection (130) is inclined with respect to a mounting horizontal plane (Z) by a preset angle not greater than 10 °.

14. The hanging seat (100) according to claim 13, characterized in that the clamp connection (130) is inclined with respect to the installation horizontal plane (Z) by a preset angle not greater than 5 °.

15. The hanging seat (100) according to claim 1, characterized in that the base (110) is provided with an inner cavity (111) opening towards the second side (110 b), the inner cavity (111) being intended to receive an elastic adjustment structure (211) of a hanger (210) of the brake caliper unit.

16. The hanger (100) according to claim 1, wherein the bogie connection portion (120) is vertically disposed at a middle portion of the first side (110 a) of the base (110), and the bogie connection portion (120) is transitionally connected with the first side (110 a) of the base (110) by an arc surface.

17. The mount (100) of claim 1 wherein the truck attachment portion (120) is disposed on a side (110 c) of the base (110) proximate to a side frame attachment portion of the truck (300), and wherein the side of the truck attachment portion (120) having the keyway is flush with a midsection side (110 d) of the base (110) proximate to the side (110 c) of the truck (300).

18. The hanger (100) according to claim 1, wherein the upper portion (120 a) of the bogie connection portion (120) is a circular arc segment.

19. A wheel-mounted brake caliper assembly, comprising: the hanger (100) according to any of claims 1 to 18; and a wheel-mounted brake caliper unit mounted on the hanger (100), the wheel-mounted brake caliper unit forming a friction pair with a brake disc (600) mounted on a wheel (500) through a brake pad; when the lifting seat (100) is installed on a bogie (300), the lifting seat (100) is inclined at a preset angle relative to an installation horizontal plane (Z), and a symmetric center line (X) of a lever of the wheel-mounted brake caliper unit is matched with the circle center of a wheel.

20. The wheel-mounted brake caliper assembly of claim 19 wherein the brake caliper unit (200) further comprises a brake yoke (230); wherein the hanger is located at one end of a brake yoke (230) of the brake caliper unit (200).

21. The wheel brake caliper assembly of claim 20 wherein said hanger (210) has a resilient adjustment structure (211); the elastic adjusting structure (211) comprises a pressing plate (211 a) and an elastic component (211 b) and is connected to a top platform (212) on the outer peripheral surface of a lifting lug of the hanging bracket (210).

22. An axle-mounted brake caliper assembly, comprising: the hanger (100) according to any of claims 1 to 18; and a shaft-mounted brake caliper unit mounted on the hanger (100), the shaft-mounted brake caliper unit forming a friction pair with a brake disc (600) mounted on an axle (400) through a brake pad; when the lifting seat (100) is installed on a bogie (300), the symmetrical center line (X) of a lever of the axle-mounted brake caliper unit is matched with the circle center of an axle.

23. The shaft-mounted brake caliper assembly of claim 22, wherein said brake caliper unit (200) includes: the brake system comprises a brake cylinder (220) for providing power, a brake yoke (230) driven by the brake cylinder (220), the brake cylinder (220) for providing power, the brake yoke (230) driven by the brake cylinder (220), a pair of clamping levers (240) for transmitting and amplifying the power generated by the brake cylinder (220), wherein the rear ends of the clamping levers (240) are hinged with the brake cylinder (220) and the brake yoke (230), and the front end of each clamping lever (240) is hinged with a brake pad holder (250); a hanger (210) having one end connected to the clamp lever (240) and the other end connected to the hanger base (100); under the pushing of the clamp lever (240), the brake pad holder (250) provided with the brake pad (260) is controlled to clamp or release the brake disc (600), wherein the hanger is positioned at one end of the brake yoke (230) of the brake clamp unit (200).

24. The axle-mounted brake caliper assembly of claim 23, wherein said hanger (210) has a resilient adjustment structure (211); the elastic adjusting structure (211) comprises a pressing plate (211 a) and an elastic component (211 b) and is connected to a top platform (212) on the outer peripheral surface of a lifting lug of the hanging bracket (210).

25. The shaft-mounted brake caliper assembly according to claim 22, wherein at least one of the keyways (121) on the hanger bracket (100) is horizontally disposed and at least another one of the keyways (121) is perpendicular or intersecting the horizontally disposed keyway (121) and has a depth greater than the horizontally disposed keyway (121).

26. A railway vehicle bogie, comprising: a wheel-mounted brake caliper assembly according to any one of claims 19 to 21 and/or a shaft-mounted brake caliper assembly according to any one of claims 22 to 25.

27. The railway vehicle truck of claim 26, further comprising a connector having a smooth section and a threaded section; the smooth section is in clearance fit with a through hole array (122) on a bogie connecting part (120) of the hanging seat (100), and the threaded section is in threaded connection with a threaded hole on a side connecting part of a longitudinal frame (310) of the railway vehicle bogie (300).

28. The railway vehicle truck of claim 27, further comprising: the middle part of the bolt is provided with an internal threaded hole along the radial direction, and the bolt is inserted into a vertical through hole which penetrates through the side surface connecting part of a longitudinal frame (310) of the railway vehicle bogie; the connecting piece penetrates through a through hole array (122) of the connecting part of the hanging seat bogie and is in threaded connection with the internal threaded hole of the bolt.

29. The railway vehicle bogie of any one of claims 26 to 28, wherein the railway vehicle bogie is an in-axle bogie.

30. A rail vehicle, comprising:

a bogie (300) having a longitudinal frame (310);

a pair of wheels (500) connected to the bogie (300) via axle boxes;

a brake disc (600) arranged on a wheel (500) or an axle (400); and

a brake caliper assembly comprising a hanger (100) and a brake caliper unit (200); two ends of the lifting seat (100) are respectively connected with a longitudinal framework (310) of the bogie (300) and the brake clamp unit (200);

wherein the hanger (100) is fixed to the longitudinal frame (310) of the bogie (300) via a connector and an array of through holes (122), and the hanger (100) is fitted with a corresponding key or keyway on the longitudinal frame (310) of the bogie (300) by means of a keyway (121) or key.

31. The rail vehicle according to claim 30, characterized in that the hanger (100) is a hanger (100) according to any one of claims 1 to 18.

32. The rail vehicle according to claim 30, characterized in that the suspension base (100) is arranged inside or outside a longitudinal frame (310) of the bogie (300).

33. The rail vehicle of claim 30, comprising: at least two of the said lifting sockets (100), at least two of the said lifting sockets (100) are arranged inside the front end or inside the rear end of the longitudinal frame (310) of the said bogie (300) at the same time; or at least two of the hangers (100) are simultaneously arranged outside the front end or outside the rear end of the longitudinal frame (310) of the truck (300).

34. A method of mounting a hanger (100) for use in a hanger (100) as claimed in any one of claims 1 to 18 characterised by matching a centre line of symmetry (X) of a brake caliper unit lever connected to the caliper connection (130) with a wheel centre or axle centre when mounting the bogie connection (120) of the hanger to a bogie (300) of a railway vehicle.

35. Method for mounting a hanger as claimed in claim 34 wherein when connecting the caliper connection (130) to a wheelmounted brake caliper unit, the caliper connection (130) is tilted at a preset angle with respect to the mounting horizontal plane (Z) and the centre line of symmetry (X) of the wheelmounted brake caliper unit lever matches the wheel centre.

Technical Field

The application relates to the technical field of rail vehicle braking, in particular to a mounting method of a lifting seat, a wheel-mounted brake clamp assembly, a shaft-mounted brake clamp assembly, a rail vehicle bogie, a rail vehicle and a lifting seat.

Background

As an important part for realizing the basic braking function of the railway vehicle, the conventional brake clamp assembly mainly comprises a three-point hoisting type brake clamp assembly and a four-point compact brake clamp assembly (namely, a single-point hoisting type brake clamp assembly). Among them, three point hoist and mount formula braking clamp subassembly is generally applicable to the bogie that the braking installation space is great. While the installation space required for a four-point compact brake caliper assembly is relatively small. Existing bogies, which have axle boxes disposed outside wheel pairs in most cases, usually reserve corresponding mounting interfaces and corresponding spaces for mounting clamp units, so that three-point hoisting type brake clamp assemblies and four-point compact brake clamp assemblies are widely used in such conventional bogies.

In recent years, with increasing demands for light weight, low wheel rail acting force, low abrasion and low noise of rail vehicles in the market, bogies with built-in axle boxes are more and more favored by market users due to the remarkable advantages of compact structure, low self weight, low energy consumption and low maintenance cost; meanwhile, the progress of the bearing technology and the vehicle lightweight design technology also provides a mature technical foundation for the commercial application of the built-in axle box bogie. Although the bogie with the built-in axle box can greatly reduce the dead weight of the bogie, due to the structural characteristics of the built-in axle box, the installation space of the reserved brake clamp unit is greatly limited, and particularly, the arrangement of a hoisting interface becomes very difficult. In this case, not only is the installation space of the three-point hoisting type brake caliper assembly insufficient, but even the four-point compact type brake caliper assembly may not be installed and used due to the insufficient space required by the installation interface.

Therefore, systematic optimization and improvement of the existing brake clamp unit from the aspects of a hoisting structure, an interface structure of the brake clamp unit and a bogie, the overall structural arrangement of the brake clamp unit and the like are expected to be adapted to the technical development trend of light weight of the bogie and more compact brake installation space. At the same time, it is also desirable to arrange the structure as simply as possible, thereby avoiding complicated processes and assembly engineering, and avoiding high costs.

Disclosure of Invention

In view of the above, the present application provides a hanger, a wheel-mounted brake caliper assembly, a shaft-mounted brake caliper assembly, a railway car truck, a railway car and a method of installing a hanger that effectively solves or at least alleviates one or more of the above problems and other problems of the prior art.

According to one aspect of the present application, there is provided a hoist mount for hoisting a brake caliper unit on a longitudinal frame of a bogie, comprising: the base is provided with a first side and a second side which are oppositely arranged; a bogie attachment portion extending from the first side of the base for attachment to a bogie; and a clamp connecting part which extends and protrudes from the second side of the base to the direction far away from the first side and is used for connecting to the brake clamp unit; the bogie connecting part is provided with a through hole array and at least one key groove or key; the bogie connecting part is fixed on a longitudinal framework of the bogie through the through hole array, and at least one key slot or key on the bogie connecting part is matched with a corresponding key or key slot on the longitudinal framework of the bogie.

Optionally, the key way or key of the bogie attachment portion is arranged obliquely relative to the base.

Optionally, the angle of inclination of the keyway or key of the bogie attachment portion relative to the base is no more than 15 °.

Optionally, the array of through holes of the bogie connection is arranged obliquely or parallel with respect to the base.

Optionally, the through holes of the array of through holes are arranged on both sides of a keyway or key on the bogie connection.

Optionally, a central line of adjacent through holes in the through hole array of the bogie connecting portion on the same side of the key groove or key is parallel to the key groove or key, and a central line of adjacent through holes on both sides of the key groove or key is perpendicular to the base.

Optionally, the through holes in the array of through holes are evenly arranged in number and/or relative position on both sides of a keyway or key on the bogie connection.

Optionally, the keyway or key has a rectangular cross-section.

Optionally, the bogie attachment portion has a plurality of keyways or keys thereon; wherein a plurality of the key grooves or keys are arranged in a staggered manner or in parallel.

Optionally, the centre line of symmetry of the brake caliper unit lever connected to the caliper attachment portion matches a wheel centre or an axle centre when the bogie attachment portion has been mounted on a bogie.

Optionally, when the clamp connecting part is connected to the wheel-mounted brake clamp unit, the clamp connecting part is inclined at a preset angle relative to the installation horizontal plane, so that the symmetric center line of the lever of the wheel-mounted brake clamp unit is matched with the circle center of the wheel.

Optionally, the clamp connection is inclined to the installation level by a preset angle of no more than 15 °.

Optionally, the clamp connection is inclined to the installation level by a preset angle of no more than 10 °.

Optionally, the clamp connection is inclined to the installation level by a preset angle of no more than 5 °.

Optionally, the base is provided with an inner concave cavity opening towards the second side, the inner concave cavity being used for accommodating an elastic adjustment structure of a hanger of the brake caliper unit.

Optionally, the bogie connecting portion is vertically arranged in the middle of the first side of the base, and the bogie connecting portion is in transition connection with the first side of the base through an arc surface.

Optionally, the bogie connecting portion is provided on one side of the bogie side frame mounting portion that the base is close to, just one side of the bogie connecting portion that has a keyway with the base is close to the middle section side parallel and level of bogie one side.

Optionally, the upper portion of the bogie connection portion is a circular arc segment.

According to another aspect of the present application, there is also provided a wheel-mounted brake caliper assembly, comprising: a hanger as described above; the wheel-mounted brake clamp unit is arranged on the lifting seat, and a friction pair is formed by the wheel-mounted brake clamp unit and a brake disc arranged on a wheel through a brake pad; when the lifting seat is installed on the bogie, the lifting seat is inclined at a preset angle relative to the installation horizontal plane, and the symmetrical center line of the lever of the wheel-mounted brake clamp unit is matched with the circle center of the wheel.

Optionally, the brake caliper unit further comprises a brake yoke; wherein the hanger is located at one end of a brake yoke of the brake caliper unit.

Optionally, the hanger has a resilient adjustment structure; the elastic adjusting structure comprises a pressing plate and an elastic assembly and is connected to the top platform on the outer peripheral surface of the lifting lug of the lifting frame.

According to yet another aspect of the present application, there is also provided an axle-mounted brake caliper assembly comprising: a hanger as described above; the shaft-mounted brake caliper unit is mounted on the lifting seat, and forms a friction pair with a brake disc mounted on an axle through a brake pad; when the lifting seat is installed on the bogie, the symmetrical center line of a lever of the axle-mounted brake clamp unit is matched with the circle center of an axle.

Optionally, the brake caliper unit comprises: the brake system comprises a brake cylinder for providing power, a brake yoke driven by the brake cylinder, a pair of clamp levers for transmitting and amplifying the power generated by the brake cylinder, wherein the rear ends of the clamp levers are hinged with the brake cylinder and the brake yoke, and the front end of each clamp lever is hinged with a brake pad holder; the lifting frame is connected with the clamp lever at one end and connected with the lifting seat at the other end; under the pushing of the clamp lever, the brake pad holder provided with the brake pad is controlled to clamp or release the brake disc, wherein the hanging seat is positioned at one end of a brake yoke of the brake clamp unit.

Optionally, the hanger has a resilient adjustment structure; the elastic adjusting structure comprises a pressing plate and an elastic assembly and is connected to the top platform on the outer peripheral surface of the lifting lug of the lifting frame.

Optionally, at least one of the keyways on the hanger seat is horizontally arranged, and at least another one of the keyways is perpendicular to or intersects with the horizontally arranged keyway and has a depth greater than the horizontally arranged keyway.

According to yet another aspect of the present application, there is also provided a railway vehicle bogie including: a wheel-mounted brake caliper assembly as described above, and/or a shaft-mounted brake caliper assembly as described above.

Optionally, the connecting piece is provided with a smooth section and a threaded section; the smooth section is in clearance fit with the through hole array on the bogie connecting part of the hanging seat, and the threaded section is in threaded connection with a threaded hole on the side connecting part of the longitudinal frame of the railway vehicle bogie.

Optionally, the method further comprises: the middle part of the bolt is provided with an internal threaded hole along the radial direction, and the bolt is inserted into a vertical through hole which penetrates through a connecting part on the side surface of a longitudinal frame of the railway vehicle bogie; the connecting piece penetrates through the through hole array of the connecting part of the lifting seat bogie and is in threaded connection with the internal threaded hole of the bolt.

Optionally, the rail vehicle bogie is an in-box bogie.

According to yet another aspect of the present application, there is also provided a rail vehicle, including: a bogie having a longitudinal frame; a pair of wheels connected to the bogie via axle boxes; a brake disc disposed on a wheel or axle; and a brake caliper assembly comprising a hanger and a brake caliper unit; two ends of the lifting seat are respectively connected with the longitudinal frame of the bogie and the braking clamp unit; the lifting seat is fixed on the longitudinal frame of the bogie through the connecting piece and the through hole array, and the lifting seat is matched with a corresponding key or key groove on the longitudinal frame of the bogie through the key groove or the key.

Optionally, the hanger is as described above.

Optionally, the hanger is arranged inside or outside a longitudinal frame of the bogie.

Optionally, comprising: at least two of the lifting seats are simultaneously arranged on the inner side of the front end or the inner side of the rear end of the longitudinal frame of the bogie; or at least two of the hangers are simultaneously arranged outside the front end or outside the rear end of the longitudinal frame of the bogie.

According to still another aspect of the present application, there is also provided a method of installing a hanger base for a hanger base as described above, wherein a center line of symmetry of a brake caliper unit lever connected to the caliper connecting portion is matched with a wheel center or an axle center when the truck connecting portion of the hanger base is installed to a truck of a railway vehicle.

Optionally, when the clamp connecting part is connected to the wheel-mounted brake clamp unit, the clamp connecting part is inclined at a preset angle relative to the installation horizontal plane, and the symmetric center line of the lever of the wheel-mounted brake clamp unit is matched with the circle center of the wheel.

According to the mounting method of the lifting seat, the wheel-mounted brake caliper assembly, the shaft-mounted brake caliper assembly, the railway vehicle bogie, the railway vehicle and the lifting seat, the connecting pieces such as bolts penetrate through the through hole array on the bogie connecting part and the corresponding through hole or threaded hole array on the bogie to realize fixation of the through hole array and the corresponding threaded hole array, and the bearing of the braking torque force is realized through the mutual matching of the key grooves on the bogie connecting part and the corresponding keys on the bogie. In the connection mode of combining the key groove matching and the screw joint, the bolt mainly plays a role in fixing and provides the friction force of the hanging seat through the pretightening force of the bolt. The key groove is used for transmitting most of transverse force between the brake clamp assembly and the bogie, so that the brake clamp assembly can bear larger brake torque, the bolt basically does not bear tangential shear force (brake torque), the connection strength of the brake clamp unit and the bogie is guaranteed, and the threaded connecting piece penetrating through the through hole is prevented from being stressed and damaged in the braking process. The safety coefficient of the bolt and the installation stability of the brake clamp assembly can be improved. And because the lifting seat extends out of the bogie connecting part and the clamp connecting part from the two opposite sides of the base, the scheme not only realizes light weight design, but also has the advantage of simple and compact structure, simultaneously meets the use condition requirement of the brake clamp unit, ensures that the brake clamp unit has proper action space, and has relatively small length of a brake cantilever, so that the cantilever has small deformation when bearing braking force, and further increases the action reliability and the hanging stability of the brake clamp unit. And the hanging seat suitable for hanging positions of different bogies can be easily designed only by adjusting the angle of the key groove relative to the base. In addition, because this hanging seat is that keyway cooperation and spiro union combine together for the clamp installation interface design that bogie and hanging seat match is also more simple, and the connection between interface and the hanging seat is more reasonable reliable simultaneously, and it is more convenient to install, and the location is more accurate, has promoted the safety guarantee of train braking.

Drawings

FIG. 1 is a perspective view of one embodiment of a pod for attaching an on-wheel brake caliper unit of the present application from a first perspective.

FIG. 2 is a perspective view of an embodiment of the disclosed pod for attachment of a wheeled brake caliper unit from a second perspective.

FIG. 3 is a schematic front view of one embodiment of a pod for attaching an on-wheel brake caliper unit of the present application.

FIG. 4 is a side cutaway schematic view of one embodiment of a pod for attaching a wheeled brake caliper unit of the present application.

FIG. 5 is a front schematic view of another embodiment of a pod for attaching an on-wheel brake caliper unit of the present application.

FIG. 6 is a perspective view of one embodiment of a hanger for attaching a shaft-mounted brake caliper unit of the present application.

Fig. 7 is a front schematic view of an embodiment of a hanger of the present application.

Fig. 8 is a side view schematic of an embodiment of a hanger of the present application.

FIG. 9 is a side schematic view of an embodiment of the wheel-mounted brake caliper assembly of the present application.

FIG. 10 is a front schematic view of an embodiment of the wheel-mounted brake caliper assembly of the present application.

FIG. 11 is a top schematic view of an embodiment of the wheel-mounted brake caliper assembly of the present application.

FIG. 12 is a side schematic view of an embodiment of the axle-mounted brake caliper assembly of the present application.

FIG. 13 is a front schematic view of an embodiment of the axle-mounted brake caliper assembly of the present application.

FIG. 14 is a top schematic view of an embodiment of the axle-mounted brake caliper assembly of the present application.

FIG. 15 is a side schematic view of the wheel-mounted brake caliper assembly of the present application mounted to a vehicle truck.

FIG. 16 is a side elevational schematic view of the axle-mounted brake caliper assembly of the present application mounted to a vehicle truck.

FIG. 17 is a top schematic view of the axle-mounted brake caliper assembly of the present application mounted to a vehicle truck.

Detailed Description

In accordance with the concept of the present application, an embodiment of a hanger for attaching a wheel-mounted brake caliper unit is described herein with reference to fig. 1 to 4 and 15, wherein fig. 1 to 4 illustrate the structure of the hanger and fig. 15 illustrates the installation environment of the hanger. The hanging seat is mainly used for hanging the wheel-mounted brake caliper unit on a longitudinal frame 310 of the bogie, so that the mounting connection between the wheel-mounted brake caliper unit and the longitudinal frame is realized. The hanging seat 100, although a single element, can be divided into the following three parts from the perspective of its structure or function: a base 110, a bogie attachment portion 120, and a clamp attachment portion 130. Wherein, the base 110 has a first side 110a and a second side 110b which are oppositely arranged, when the direction illustrated in the figure is taken as a coordinate system, the first side 110a above the base 110 has a bogie connecting part 120 which is extended and protruded and is used for connecting a bogie 300 so as to realize the installation and positioning of the brake assembly relative to the bogie; and the second side 110b below the base 110 has a clamp connection portion 130 extended and projected away from the first side for connecting the brake clamp unit 200 to achieve the positioning between the brake clamp unit and the brake disc. The truck connecting portion 120 has a through hole array 122 and a key slot 121. In this arrangement, the bolts can be inserted through the through hole array 122 on the bogie connecting portion 120 and the corresponding through hole array on the bogie 300 to fix the through holes, and the key slots 121 on the bogie connecting portion 120 and the corresponding keys on the bogie 300 can cooperate to bear the force. The through hole array 122 in this embodiment may include a plurality of through holes, which together form an array, the plurality of through holes may be any odd number or even number greater than 2, and the arrangement of the array formed accordingly may also be adaptively adjusted. Of course, it should be appreciated that there are a variety of positional relationships between the keyway and the array of through holes as they are both disposed on the truck attachment portion. For example, both sides of the keyway have the same number of through-holes in the through-hole array; for another example, the two sides of the key slot are provided with different numbers of through holes in the through hole array; even if one side of the key slot has all the through holes in the through hole array and the other side does not have through holes, it should be included in the idea of the present application as long as it does not affect the implementation of the two connection methods in the present solution. In the connection mode of combining the key and the screw joint, the bolt mainly plays a role in fixing and provides the friction force of the hanging seat through the pretightening force of the bolt. Most of transverse force between the braking clamp and the bogie is transmitted through the key groove, so that the bolt basically does not bear tangential shearing force (braking torque), and the safety coefficient of the bolt and the stability of the braking clamp can be improved. The scheme realizes the light weight design, has the advantage of simple and compact structure, and meets the use condition requirement of the brake clamp unit. In addition, the clamp installation interface matched with the lifting seat on the bogie is simpler in design, and meanwhile, the connection between the interface and the lifting seat is more reliable. And when the suspension seat is applied to the axle box built-in bogie with limited installation space, the advantage of compact structure can be better embodied.

Naturally, the details of the foregoing embodiments may be modified to achieve similar technical results, which should also be included in the scope of protection of the present application.

For example, although one key groove 121 is shown, a plurality of key grooves may be provided, and the key grooves may be arranged in a staggered manner as shown in fig. 5 or in a manner that a plurality of key grooves not shown are arranged in parallel with each other, which may also perform a torque-receiving function well.

For another example, although the key groove 121 is provided on the hanger 100, a key that fits into the key groove 121 is provided at a corresponding position of the bogie. However, in practical applications, the two may be reversed, that is, a key is disposed on the lifting seat 100, and a key groove matched with the key is disposed at a corresponding position of the bogie, which can also achieve the function of bearing the torque well. In addition, the key or keyway itself can have a variety of configurations. In this embodiment, a key or a key groove having a rectangular cross section and a long shape may be used. The application of the bearing device in the embodiment can also bring better effect of bearing moment.

Further, the key slots 121 may be in a positional relationship with the array of threaded holes 122 on the truck attachment portion 120. For example, the key slot 121 on the truck attachment portion 120 may be disposed through the array of through holes 122 of the truck attachment portion 120, and its presence does not disrupt any threaded holes. Therefore, the two sides of the key groove are screwed and fastened, and the reliability of fixation is ensured. Furthermore, the center lines of the adjacent through holes in the through hole array 122 of the bogie connecting part 120 on the same side of the key groove 121 or the key are parallel to the key groove 121 or the key, and the center lines of the adjacent through holes on both sides of the key groove 121 or the key are perpendicular to the base 110, thereby better improving the stability of the connection between the two. More specifically, in the drawings, the through holes in the through hole array 122 are arranged evenly in number and/or relative position on both sides of the key groove 121 or key on the bogie attachment portion 120. The processing of the hanging seat is easier, the connecting stress of the hanging seat and the bogie is uniform, and the reliability is further improved; in addition, the through hole is prevented from being close to the key slot or the key, and the strength requirement of the key slot or the key is guaranteed.

More importantly, the key slot 121 of the bogie attachment portion 120 of the hanger 100 may be arranged obliquely with respect to the base 110. I.e. a design in which the key slot 121 in the bogie connecting part 120 is at an oblique angle to the horizontal, it is not possible to mount the bogie connecting part of the hanger vertically to the bogie and at the same time achieve its positioning relative to the brake disc in some application scenarios due to the limited installation space. At this time, the clamp connection portion 130 of the hanger 100 can be directly inclined at a predetermined angle with respect to the installation horizontal plane Z of the bogie 300 by obliquely connecting the bogie connection portion and the bogie, so that the symmetric center line X of the lever of the wheel-mounted brake clamp unit 200 connected to the clamp connection portion 130 is matched with the center of the wheel 500, that is, the brake pad 260 installed on the brake clamp unit 200 is ensured to be at a reasonable position with respect to the brake disc 600. And then realize that the symmetry center line X of the lever of the wheel-mounted brake caliper unit is in the upper and lower reasonable range of the circle center position of the wheel 500, for example, the symmetry center line X can pass through the circle center of the wheel 500 or be located above the circle center, the brake pad is matched with the brake disc binding surface in the middle at the moment, and under the working condition that the vehicle is empty or heavy, the brake pad can not be swung out of the brake disc as much as possible. On this basis, the through-hole array 122 of the bogie attachment 120 may also be arranged obliquely with respect to the base 110 so that the through-hole array 122 remains parallel to the key or keyway 121. This also facilitates a uniform stress on the connection of the hanger to the bogie, further improving its reliability. On this basis, to ensure that the brake caliper unit meets the strength requirements during braking, the angle of inclination of the key way 121 or key of the bogie attachment portion 120 relative to the base 110 may be set to no more than 15 °.

Meanwhile, the base of the hanging seat can adopt an asymmetric design of the inner side and the outer side, on one hand, the base is better matched with the mounting interface of the bogie frame, the left side surface of the hanging seat can be fully utilized, so that the processing amount is not required to be too large, on the other hand, the mounting position of the braking clamp unit is moved upwards, and the inclination angle of the hanging is not too large.

In addition, due to the consideration of the overall structure design and avoidance of other parts arrangement, etc., the mounting and hanging point of the hanging seat 100 on the bogie 300 is low, so that after the brake caliper assembly is mounted, the center line X of the wheel-mounted brake caliper unit 200 therein is much lower than the center of the wheel 500. At this time, the brake pads of the wheel-mounted brake caliper unit 200 may swing out of the brake disc, so that the brake pads may interfere with the wheel-set edge. According to an aspect of the present application, in a state where the hanger 100 is completely assembled with the wheel-mounted brake caliper unit 200 and the truck 300, respectively, the caliper connecting portion 130 of the hanger 100 is inclined at a predetermined angle with respect to the installation horizontal plane Z of the truck 300, so that the center line X of the brake caliper unit 200 connected to the caliper connecting portion 130 matches the center of the wheel 500. The matching means that the center line X of the wheel-mounted brake caliper unit 200 may pass through the center of the wheel 500 and may have a certain deviation from the center of the wheel 500, but the deviation is within an allowable range, in any case, the center line X of the wheel-mounted brake caliper unit can be within an upper and lower reasonable range of the center position of the wheel 500, the brake pad and the brake disc attaching surface are matched in the middle, and the brake pad can not swing out of the brake disc as much as possible under the working conditions of empty and heavy vehicles. This design solves the problem of mounting the brake caliper unit 200 to the pedestal internal truck 300 by simply modifying the single part hanger 100 in the brake caliper assembly. The installation space of the bogie 300 can be saved, the design of the installation interface of the bogie 300 is simplified, the space utilization rate of the brake caliper unit 200 is improved, the change of the existing brake caliper assembly is small, and the universal applicability is realized.

In consideration of the installation space and reliability, the clamp connection portion 130 is inclined at a predetermined angle of not more than 15 ° with respect to the installation horizontal plane Z. For example, the preset angle may be set to not more than 10 °. More specifically, the preset angle may be set to not more than 5 °.

Furthermore, it may be arranged such that the first side 110a of the base 110 is located above the second side 110 b; the truck connection portion 120 of the hanger extends upward from the first side 110a with respect to the base, and the clamp connection portion 130 of the hanger extends downward from the second side 110b with respect to the base.

In addition, the bogie attachment portion 120 may be substantially vertically disposed at a middle portion, for example, a middle portion, of the first side 110a of the base 110, and the bogie attachment portion 120 and the first side 110a of the base 110 may be transitionally connected by an arc surface, thereby further improving the degree of space utilization and compatibility and ensuring sufficient strength at the place.

Meanwhile, the bogie connecting part 120 may be substantially vertically disposed at a side 110c of the base 110 near the side frame mounting part of the bogie 300, and the side 110c of the bogie connecting part 120 having the key groove may be flush with a side 110d of a middle section of the base 110 near the side 110c of the bogie 300. Therefore, on one hand, the joint of the bogie connecting part and the interface of the bogie is convenient to attach, and the space between the bogie connecting part and the clamp connecting part is more compact, so that the compact and light design of the whole structure of the lifting seat is realized; on the other hand, the cutting processing amount can be reduced, and the manufacturing and processing are more convenient and efficient.

Alternatively, the upper portion 120a of the bogie connecting portion 120 may be provided as a circular arc segment, thereby occupying less space while ensuring strength, and further reducing the volume and weight of the hanger.

Furthermore, an inner concave cavity 111 opened toward the second side 110b may be further disposed below the base 110 of the hanging seat 100, and the inner concave cavity 111 may be used to accommodate an elastic adjustment structure 211 of the hanger 210 of the brake caliper unit, so as to ensure the deflection balance of the hanging seat 100 and the brake caliper unit after the installation is completed.

Alternatively, the clamp connection portion 130 of the lifting socket 100 may include two substantially parallel lifting lugs disposed oppositely, that is, a first lifting lug 130a and a second lifting lug 130b located below the second side 110b of the base, the first lifting lug 130a and the second lifting lug 130b are respectively provided with a lifting hole for connection with the clamp hanger, and a mounting surface for mounting the anti-drop plate and a pin hole are provided on a radially outer end surface of one of the first lifting lug and the second lifting lug, so that the mounting surface and the pin hole are located above or below the lifting hole. In addition, two threaded holes are formed in the outer side face of the lifting lug on one side and located above the upper lifting lug hole, and the clamping plate is used for installing and preventing the pin shaft for connecting the lifting seat and the lifting frame from moving or falling off.

Optionally, one or more reinforcing bars connecting the bogie connection portion and the clamp connection portion may be provided on the hanger so as to increase the connection strength.

Alternatively, the through holes in the through hole array 122 may be in a counter-sunk design on the side away from the key slot to facilitate the installation of the anti-loose washer.

Similarly, fig. 6 and 16-17 are perspective views of one embodiment of the present shaft mount, with fig. 6 showing the structure of the mount and fig. 16-17 showing the mounting environment of the mount. Which is the same as the hanger in the previous embodiment in terms of design of the key slot and the threaded hole, the specific difference being only in the specific shape configuration of the base and each mounting portion. For example, the axle mount also includes triangular reinforcing ribs formed extending between the base 110 and the truck attachment portion 120. Since the bogie connecting portion 120 in this embodiment has a plate shape extending vertically and the base 110 has a plate shape extending horizontally, additional triangular reinforcing ribs are provided therebetween to more effectively increase the structural strength therebetween. It should be noted that these differences exist primarily to accommodate the truck mounting application and the brake caliper placement and therefore do not affect the primary concepts of the present application and are not described in detail herein.

Turning to fig. 9-11, one embodiment of the wheel-mounted brake caliper assembly of the present application is shown for braking a wheel-mounted brake disc, i.e., a brake disc 600 held by the brake pads 260 of the brake caliper unit 200 is disposed on a wheel 500. Specifically, the wheel-mounted brake caliper assembly may include the hanger 100 of any of the embodiments or combinations thereof, for example, the hanger 100 described above in connection with fig. 1-4, such a hanger 100 having an array of through holes 122 and a keyway 121. In this arrangement, the fastening between the suspension 100 and the bogie 300 can be achieved by bolts passing through the through hole array 122 of the suspension 100 and the corresponding through hole array of the bogie 300, and the load-bearing of the force can be achieved by the key slots 121 of the suspension 100 and the corresponding keys of the bogie 300. In the connection mode of combining the key and the bolt, the bolt mainly has the fixing function and provides the friction force of the hanging seat through the pretightening force of the bolt. Most of transverse force between the braking clamp and the bogie is transmitted through the key groove, so that the bolt basically does not bear tangential shearing force (braking torque), and the safety coefficient of the bolt and the stability of the braking clamp can be improved. The scheme realizes the light weight design, has the advantage of simple and compact structure, and meets the use condition requirement of the brake clamp unit. In addition, the clamp installation interface matched with the lifting seat on the bogie is simpler in design, and meanwhile, the connection between the interface and the lifting seat is more reliable. In addition, the wheel-mounted brake caliper assembly may further include a brake caliper unit 200 mounted on the hanger 100, and forming a friction pair with a brake disc 600 mounted on the wheel 500 through a pad holder. When the lifting seat 100 is mounted on the bogie 300, the lifting point on the bogie 300 is generally set to ensure that the symmetry plane of the brake caliper unit is not lower than the horizontal reference line of the wheel center. However, if the hanging point is too low, the symmetric center line of the lever of the clamp cannot be designed to be parallel to or above the reference line of the horizontal plane of the center of the wheel circle, which will cause the brake pad to be unable to completely cover the friction surface of the brake disc in the center, and therefore, the hanging seat is usually installed on the bogie in a manner of offsetting a certain angle. That is, at this time, the hanger 100 is inclined at a predetermined angle with respect to the installation horizontal plane Z such that the symmetric center line X of the lever of the brake caliper unit 200 matches the center of the wheel 500. The matching here means that the symmetric center line X of the lever of the brake caliper unit 200 may pass through the center of the wheel 500, or may have a certain deviation from the center of the wheel 500, but the deviation is within an allowable range, in any of the above cases, the symmetric center line X of the lever of the brake caliper unit can be within an upper and lower reasonable range of the center position of the wheel, the brake pad and the brake disc attaching surface are matched in the middle, and the brake pad can not swing out of the brake disc as much as possible under the working conditions of empty and heavy vehicles. This design solves the problem of mounting the brake caliper unit 200 to the pedestal internal truck 300 by simply modifying the single part hanger 100 in the brake caliper assembly. The installation space of the bogie 300 can be saved, the design of the installation interface of the bogie 300 is simplified, the space utilization rate of the brake caliper unit 200 is improved, the change of the existing brake caliper assembly is small, and the universal applicability is realized.

Naturally, the details of the foregoing embodiments may be modified to achieve similar technical results, which should also be included in the scope of protection of the present application.

For example, the brake caliper unit 200 includes: brake cylinder 220, which is used to provide power, may be, for example, a conventional brake cylinder without parking function or a brake cylinder with parking function. The brake caliper unit 200 further includes a brake yoke 230 driven by the brake cylinder 220, a pair of caliper levers 240 transmitting and amplifying power generated from the brake cylinder 220, wherein a rear end of each caliper lever 240 is hinged to the cylinder body of the brake cylinder 220 and the brake yoke 230, respectively, and a front end of each caliper lever 240 is hinged to the pad receiver 250, respectively; a hanger 210 having one end connected to the clamp lever 240 and the other end connected to the hanger 100. The brake shoe 250, to which the brake pads 260 are mounted, controllably grips or releases the brake disc 600 by the push of the caliper lever 240. At this time, in the brake caliper unit 200, the output force of the brake cylinder 220 is amplified and transmitted to the pad receiver 250 through the caliper lever 240, and the both side pads 260 are pushed from the surface to clamp the brake disc 600 to generate friction, thereby achieving braking of the wheel. Wherein the hanger is located at one end of the brake yoke 230 of the brake caliper unit 200. Since the brake yoke 230 at this end has a small diameter with respect to the cylinder body of the brake cylinder 220, it does not easily interfere with the side member of the bogie when it is extended, and thus it is possible to preferably avoid interference with other parts due to deviation of the expansion and contraction displacement of the brake yoke after the assembly is used for a long time, and to more reasonably utilize the space.

In addition, the deflection balance of the brake caliper unit in the brake caliper assembly may employ a leaf spring structure to provide spring damping and to achieve overall structural stability of the brake caliper unit. The structure is simple and practical. Specifically, referring to fig. 7 and 8, the hanger 210 has an elastic adjustment structure 211; the elastic adjustment structure 211 includes a pressing plate 211a and an elastic member 211b, and is coupled to a top platform 212 on an outer circumferential surface of the lifting lug of the hanger 210. As a class of examples, such a spring assembly 211b may be constructed by stacking a plurality of planar spring leaves, e.g., it may be constructed by stacking 3 leaf springs, then applying a leaf spring pressure plate to the leaf spring, and finally tightening with two bolts, thereby providing an initial preload force. Alternatively, 2 disc springs may be used in opposition, or other resilient elements may be used instead. The brake cylinder is in a compact structure, so that the installation space and the weight of the whole brake clamp unit are reduced, and the light weight and the miniaturization of the brake clamp unit are realized.

Referring again to fig. 12-14, one embodiment of the axle-mounted brake caliper assembly of the present application is shown for braking of an axle-mounted brake disc, i.e., a brake disc 600 retained by the brake pads 260 of the brake caliper unit 200 is disposed on the axle 400. The shaft-mounted brake caliper unit forms a friction pair with a brake disc 600 mounted on the wheel 500 through the brake pads 260. Wherein the symmetric center line X of the lever of the axle-mounted brake caliper unit matches the axle center when the hanger 100 is mounted on the truck 300. In addition, the brake caliper assembly is identical to the wheel-mounted brake caliper assembly of the previous embodiment in terms of design of the key slot and threaded hole of the hanger, and differs only in the specific shape configuration of the base and each mounting portion, and in the mounting position of the brake disc. These differences are only suitable for the installation of the bogie and the arrangement position of the brake caliper, and therefore do not affect the main concept of the present application, and are not described herein again.

Additionally, for a shaft-mounted brake caliper assembly, the hanger 100 may have a plurality of key slots 121 formed therein. At least one of the key grooves 121 may be horizontally disposed, and at least another one of the key grooves 121 may be perpendicular or cross the horizontally disposed key groove 121 and have a depth greater than that of the horizontally disposed key groove 121. In this example, the horizontal keyways 121 primarily serve to carry shear moments, while the keyways 121 perpendicular or intersecting them primarily serve to reduce weight.

The hanging seat and the brake clamp assembly in any embodiment or combination of the above embodiments can be widely applied to the field of rail transit, for example, the hanging seat and the brake clamp assembly can be applied to a power centralized motor train unit or an urban rail train with a speed grade of 160-250 kilometers per hour, a power centralized truck with a speed of more than 160 kilometers, and a high-speed urban subway, a light rail vehicle and the like. The brake caliper has the characteristics of light weight, compact structure, small required installation space and the like, can greatly reduce the purchasing cost and the operation and maintenance cost of a client, and also reflects the development trend of the brake caliper assembly.

The present application describes in detail herein an embodiment of a railway vehicle with respect to FIG. 15, wherein the mounting relationship of the brake caliper assembly of the vehicle to the vehicle truck is illustrated. Specifically, the rail vehicle includes at least: a bogie 300, wheels 500, a brake disc 600, and a brake caliper assembly. Therein, the bogie 300 has a longitudinal frame 310 which is connected to the wheels 500 via axles 400. The brake disc 600 is disposed on the wheel 500. The brake caliper assembly should include at least the hanger 100 and the brake caliper unit 200. Wherein, the two ends of the hanging seat 100 are respectively connected with the longitudinal frame 310 of the bogie 300 and the brake caliper unit 200; specifically, the hanger 100 is fixed to the longitudinal frame 310 of the bogie 300 via the through hole array 122, and the hanger 100 is engaged with the corresponding key on the longitudinal frame 310 of the bogie 300 through the key groove 121. In this arrangement, the fastening between the through hole array 122 on the hanger 100 and the corresponding through hole array on the bogie 300 can be achieved by bolts, and the load bearing of the force can be achieved by the key slot 121 on the hanger 100 and the corresponding key on the bogie 300. In the connection mode of combining the key and the bolt, the bolt mainly has the fixing function and provides the friction force of the hanging seat through the pretightening force of the bolt. Most of transverse force between the braking clamp and the bogie is transmitted through the key groove, so that the bolt basically does not bear tangential shearing force (braking torque), and the safety coefficient of the bolt and the stability of the braking clamp can be improved. The scheme realizes the light weight design, has the advantage of simple and compact structure, and meets the use condition requirement of the brake clamp unit. In addition, the clamp installation interface matched with the lifting seat on the bogie is simpler in design, and meanwhile, the connection between the interface and the lifting seat is more reliable. In particular, the suspension in the rail vehicle can also adopt the suspension of any of the embodiments or combinations thereof and will thus also have a corresponding technical effect, which will not be further described herein.

Referring again to fig. 16-17, another rail vehicle embodiment is shown having a vehicle construction similar to that of the previous embodiment, differing primarily in the variation of the mounting location of the brake caliper assembly to the brake disc. Wherein the brake disc 600 is arranged on the axle 400, for example, in a middle section of the axle 400; and the brake caliper assembly is disposed inside the longitudinal frame 310 of the bogie 300 for engaging the brake disc 600 mounted thereto to effect assembly and braking thereof. Thus, the brake caliper assembly in this vehicle is identical to the vehicle of the previous embodiment in design considerations of the key slots and threaded holes of the hanger, differing only in the specific shape configuration of the base and mounting portions, and in the location of the brake disc mounting. These differences are only suitable for the installation of the bogie and the arrangement position of the brake caliper, and therefore do not affect the main concept of the present application, and are not described herein again.

Furthermore, it can be seen from the teachings of the foregoing embodiments that there are many possibilities for the arrangement of the hanger from the vehicle bogie to accommodate different braking requirements or structural space limitations.

For example, the hanger 100 may be disposed inside or outside the longitudinal frame 310 of the bogie 300 as needed to match a shaft-mounted brake unit or a wheel-mounted brake unit, respectively. For another example, when two types of brake units exist simultaneously, at least two lifting seats 100 may be provided simultaneously, and the lifting seats 100 are disposed inside and outside the longitudinal frame 310 of the bogie 300, respectively. Alternatively, considering that the wheel-mounted brake caliper units are generally symmetrically arranged to achieve a good braking effect, at least two of the hangers 100 may be simultaneously arranged outside the front end or the rear end of the longitudinal frame 310 of the bogie 300.

Further, at least two sets of brake caliper assemblies may be configured to simultaneously apply brakes to the front and rear of the vehicle. For example, one of the brake caliper assemblies is used to brake a front wheel or a front axle; and the other of the brake caliper assemblies is used to brake the rear wheel or rear axle.

Furthermore, several modifications may be made to further improve the reliability of the connection between the hanger and the vehicle bogie. As will be exemplified below.

For example, the solution may also include a connector that may have a smooth section and a threaded section. Wherein, the smooth section of the connecting member is in clearance fit with the through hole array 122 on the bogie connecting part 120 of the hanger 100, and the threaded section of the connecting member is in threaded connection with the threaded hole on the side connecting part of the longitudinal frame 310 of the bogie 300. And anti-loosening steel wires or anti-loosening gaskets are arranged between the connecting pieces and the connecting positions to reinforce the connection.

As another example, the solution may further comprise a latch. The middle part of the bolt is provided with an internal thread hole along the radial direction, and the bolt is inserted into a vertical through hole which penetrates through the side surface connecting part of the longitudinal frame of the bogie. At this time, the connector is threaded through the through hole array 122 of the hanger bogie connection while being threadedly engaged with the internal threaded hole of the plug pin. The connecting mode structure is convenient to maintain in the application process, the side connecting part of the longitudinal frame of the bogie is not easy to damage, the service life of the side connecting part of the bogie can be prolonged, the maintenance cost is reduced, and the bolt does not need to consider the problem of welding, so that materials with higher strength can be adopted, and the reliability and the safety of connection are further improved.

There is also provided a method of mounting a hanger which may be used to mount a hanger of any of the embodiments or combinations thereof described above on a bogie of a railway vehicle. Specifically, when the truck coupling part 120 of the hanger 100 is mounted to the truck 300 of the railway vehicle, the brake pad and the brake disc contact surface are centered by matching the symmetric center line X of the brake caliper unit lever coupled to the caliper coupling part 130 with the center of the wheel or the center of the axle, and the brake pad is not swung out of the brake disc as much as possible under both the empty and heavy vehicle conditions.

On the basis, when the lifting seat is used for connecting the wheel-mounted brake caliper unit, the arrangement of the lifting point on the bogie 300 generally ensures that the symmetry plane of the brake caliper unit is not lower than the horizontal reference line of the circle center of the wheel. However, if the hanging point is too low, the symmetric center line of the lever of the clamp cannot be designed to be parallel to or above the reference line of the horizontal plane of the center of the wheel circle, which will cause the brake pad to be unable to completely cover the friction surface of the brake disc in the center, and therefore, the hanging seat is usually installed on the bogie in a manner of offsetting a certain angle. At this time, the installation method may further include: when the caliper connecting portion 130 is connected to the wheel-mounted brake caliper unit, the caliper connecting portion 130 is inclined at a predetermined angle with respect to the installation horizontal plane Z, and the center line X of symmetry of the lever of the wheel-mounted brake caliper unit is matched with the center of the wheel.

The above examples have primarily described a hanger, wheel-mounted brake caliper assemblies, axle-mounted brake caliper assemblies, rail vehicles, and methods of mounting a hanger. Although only a few embodiments of the present application have been described, those skilled in the art will appreciate that the present application may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made therein without departing from the spirit and scope of the present application as defined in the appended claims.