A brake hanger for a railway vehicle bogie

Abstract

The utility model discloses a railway vehicle bogie's brake suspension seat belongs to railway vehicle brake device technical field. The brake suspension seat includes roof, at least one piece of muscle board and at least one piece of backing pad, and muscle board and backing pad are all fixed in the top plate lower surface. The roof includes the fixed plate for fixing compact type brake clamp unit and the extension and the formation of the enlarged end that is outwards along the fixed plate one end and is up to the arch, and the enlarged end is configured as with the bogie crossbeam welding, and its width is greater than the width of fixed plate. Muscle board is close to the one end of the enlarged end and is provided with the arc interface that is in accord with the circular arc surface of bogie crossbeam, and the arc interface is configured as with the bogie crossbeam welding. The backing pad is used for adjusting the suspension height of compact type brake clamp unit. The utility model discloses simple structure, and easy to install has improved the connecting strength between brake suspension seat and bogie crossbeam, and can adjust the installation height of brake clamp unit simultaneously according to the need, adapts to different use environment.

Description

Technical Field

[0001] This utility model relates to the technical field of railway vehicle braking devices, specifically to a brake hanger for a railway vehicle bogie. Background Technology

[0002] The braking system of railway vehicle bogies is a key component ensuring the safe operation of trains. The brake hanger, as a crucial structure connecting the brake caliper unit and the bogie, directly affects the installation accuracy, stability, and reliability of the braking system. With the continuous development of railway vehicle technology, compact brake caliper units are widely used due to their compact structure and excellent braking performance. Consequently, the design of the corresponding brake hanger needs continuous optimization to meet practical application requirements.

[0003] Currently, there are various designs for brake hangers on railway vehicle bogies. For example, Chinese patent document CN112061166B discloses a bogie including a rigid frame, an adapter fixed to the side beam, and a brake caliper unit. The adapter has caliper mounting holes with the length direction of the mounting holes parallel to the reference plane. While this design improves the stability of the brake caliper unit installation, its structure is relatively complex and its manufacturing cost is high. Chinese patent document CN105365842B discloses a brake caliper unit hoisting structure and a train bogie, including a brake hanger and an adapter. By setting different numbers of mounting holes on the brake hanger and adapter, different types of brake caliper units can be installed. Chinese patent document CN205168531U also proposes a similar design concept. Although these designs improve the versatility of train bogies, their structural strength and stability still need optimization.

[0004] Existing brake hangers have the following shortcomings: First, the connection strength with the bogie crossbeam is not ideal, and loosening or deformation may occur during long-term operation; second, there is a lack of an effective height adjustment mechanism, making it difficult to accurately adjust the installation position of the brake caliper unit; third, the structural design is not reasonable, resulting in excessive weight or insufficient strength; and fourth, the manufacturing process is complex and costly. Therefore, it is necessary to design a railway vehicle bogie brake hanger with a reasonable structure, reliable connection, easy adjustment, and simple manufacturing to meet the installation requirements of compact brake caliper units and improve the safety and reliability of the braking system. Utility Model Content

[0005] To address the technical problem of designing a brake hanger for railway vehicle bogies that meets the requirements of a compact brake caliper unit installation interface, is safe and reliable, and is easy to manufacture, this utility model provides a brake hanger for railway vehicle bogies, achieving the technical effects of simple structure, easy manufacturing, low cost, large safety margin, high reliability, light weight, and high assembly precision.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A brake hanger for a railway vehicle bogie includes a top plate, at least one stiffening plate, and at least one pad. The stiffening plate and the pad are both fixed to the lower surface of the top plate. The top plate includes a fixing plate for fixing a compact brake caliper unit and an enlarged end extending outward and curving upward from one end of the fixing plate. The enlarged end is configured to be welded to the bogie crossbeam, and the width of the enlarged end is greater than the width of the fixing plate. The stiffening plate has an arc-shaped interface at its end near the enlarged end that matches the arc surface of the bogie crossbeam, and the arc-shaped interface is configured to be welded to the bogie crossbeam. The pad is used to adjust the suspension height of the compact brake caliper unit.

[0007] As a preferred embodiment of this utility model, the ratio between the width of the enlarged end and the width of the fixed plate is (1.2-1.5):1.

[0008] As a preferred embodiment of this utility model, the upward angle of the enlarged end relative to the fixed plate is 10-30°.

[0009] As a preferred embodiment of this utility model, there is a gap between the arc-shaped interface and the enlarged end.

[0010] As a preferred embodiment of this utility model, the contact end between the enlarged end and the bogie crossbeam is provided with a trapezoidal notch.

[0011] As a preferred embodiment of this utility model, the contact ends of the stiffening plate with the bogie crossbeam and the top plate are all provided with trapezoidal notches.

[0012] As a preferred embodiment of this utility model, the fixing plate is provided with multiple bolt holes for fixed connection with the compact brake caliper unit by bolts.

[0013] As a preferred embodiment of this utility model, the pad is fixed to the lower surface of the top plate below the bolt hole.

[0014] As a preferred embodiment of this utility model, the fixing plate is provided with a weight reduction hole in the middle.

[0015] As a preferred technical solution of this utility model, the top plate, stiffening plate and pad plate are connected by welding to form an integral structure.

[0016] Compared with the prior art, this utility model has the following advantages: 1. This utility model is simple to manufacture and significantly reduces costs. It adopts a welded integrated plate structure, replacing the complex casting process or high-precision machining process in existing technologies. It eliminates the need for complex molds and reduces the steps of precision assembly of multiple parts, greatly reducing manufacturing difficulty; at the same time, the cost of raw materials is lower, and the welding process is more efficient, ultimately achieving effective control of production costs.

[0017] 2. This utility model boasts high structural strength and outstanding safety and reliability. Multiple structural designs enhance connections and support, ensuring it is not prone to loosening or deformation under long-term braking forces. Multiple stiffening plates are added, with the arc-shaped interface at one end of each plate perfectly matching the arc surface of the bogie crossbeam, forming a close-fitting support after welding, thus avoiding localized stress concentration. The width of the enlarged end of the top plate is greater than that of the fixed plate (width ratio 1.2-1.5:1), and the enlarged end is directly welded to the bogie crossbeam, increasing the contact welding area with the crossbeam. Trapezoidal notches are provided at the contact ends of the stiffening plates with the top plate and crossbeam, as well as at the contact ends of the enlarged end and the crossbeam, facilitating welding operations, ensuring welding quality, and further enhancing connection stability.

[0018] 3. This utility model achieves lightweight design, contributing to vehicle weight reduction. While ensuring strength, a weight-reducing hole is set in the middle of the fixing plate, effectively reducing its own weight without weakening the load-bearing capacity of the brake hanger. This design can directly reduce the overall unsprung weight of railway vehicles, indirectly improving the stability and energy economy of vehicle operation.

[0019] 4. This utility model features high assembly precision and strong installation adaptability. It balances precise installation with flexible adjustment, meeting the usage requirements of compact brake caliper units. The assembly working surface of the brake hanger is precision-machined, and in conjunction with multiple bolt holes on the fixing plate, precise positioning and installation of the compact brake caliper unit can be achieved, ensuring the installation accuracy of the braking system. A shim is correspondingly placed below the bolt holes; by selecting shims of different thicknesses, the suspension height of the brake caliper unit can be flexibly adjusted to adapt to the installation requirements of different bogie models or different operating scenarios, improving the product's versatility. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the brake hanger of this utility model.

[0021] Figure 2 This is a schematic diagram of the main structure of the brake hanger of this utility model.

[0022] Figure 3 This is a right-side structural schematic diagram of the brake hanger of this utility model.

[0023] Figure 4 This is a bottom view of the brake hanger of this utility model.

[0024] In the diagram: 1. Top plate; 101. Fixing plate; 102. Enlarged end; 2. Rib plate; 201. Arc-shaped interface; 3. Pad plate; 4. Trapezoidal notch; 5. Bolt hole; 6. Weight reduction hole; 7. Bogie crossbeam. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present utility model. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. For those skilled in the art, the omission of certain well-known structures and their descriptions in the drawings is understandable. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present utility model.

[0026] like Figures 1-4 As shown, this embodiment relates to a brake hanger for a railway vehicle bogie, which includes a top plate 1, three stiffening plates 2, and two pads 3. All components are made of low-alloy high-strength structural steel, balancing strength and weldability. The top plate 1, as the core load-bearing component, connects the brake caliper unit's suspension to the bogie crossbeam 7. The stiffening plates 2 enhance the top plate 1's torsional and bending resistance. The pads 3 allow for precise adjustment of the brake caliper unit's suspension height. These three components are welded together to form a rigid whole, meeting the long-term impact load requirements of the braking system.

[0027] In one embodiment of this application, the top plate 1 is integrally manufactured from a steel plate through CNC cutting and bending. The top plate 1 includes a fixing plate 101 for fixing a compact brake caliper unit and an enlarged end 102 extending outward and curving upward along one end of the fixing plate 101. The enlarged end 102 is configured to be welded to the bogie crossbeam 7, and its width is greater than the width of the fixing plate 101. Specifically, the ratio between the width of the enlarged end 102 and the width of the fixing plate 101 is 1.3:1. This widening design improves the reliability of the connection with the bogie crossbeam 7, and the increased contact area enhances the welding strength with the bogie crossbeam 7. The upward curvature angle of the enlarged end 102 relative to the fixing plate 101 is 20°. This upward curvature design allows the enlarged end 102 to better fit against the outer surface of the bogie crossbeam 7.

[0028] In one embodiment of this application, the fixing plate 101 is provided with a plurality of bolt holes 5, which are used for fixed connection with the compact brake caliper unit by bolts. A weight reduction hole 6 is provided in the middle of the fixing plate 101. The weight reduction hole 6 effectively reduces the self-weight of the brake hanger without affecting the overall structural strength.

[0029] In one embodiment of this application, the three stiffening plates 2 are all steel plates, evenly distributed along the length of the lower surface of the top plate 1, to increase the overall strength of the brake hanger. One end of the stiffening plate 2 near the enlarged end 102 is provided with an arc-shaped interface 201 that matches the arc surface of the bogie crossbeam 7. The arc-shaped interface 201 is configured to be welded to the bogie crossbeam 7. A certain gap exists between the arc-shaped interface 201 and the enlarged end 102; this design facilitates welding and enhances the connection strength. Trapezoidal notches 4 are provided at the contact ends of the stiffening plate 2 with the bogie crossbeam 7 and the top plate 1. These trapezoidal notches 4 facilitate welding operations, and the surface roughness of the contact surfaces is no greater than 12.5.

[0030] In one embodiment of this application, a trapezoidal notch 4 is also provided at the contact end between the enlarged end 102 and the bogie crossbeam 7, which is also to facilitate welding operations and ensure welding quality.

[0031] In one embodiment of this application, both pads 3 are steel plates, and each pad 3 has a through hole coaxial with the bolt hole 5 to prevent jamming during bolt installation. The two pads 3 are fixed to the lower surface of the top plate 1, specifically to the lower surface of the top plate 1 below the bolt hole 5. The pads 3 are used to adjust the suspension height of the compact brake caliper unit. By using pads 3 of different thicknesses, the installation position of the brake caliper unit can be precisely adjusted to ensure the braking system operates at its optimal state.

[0032] In one embodiment of this application, the top plate 1, the stiffening plate 2, and the pad plate 3 are welded together to form a single, stable brake hanger. This integrated design enhances structural strength and improves the service life of the brake hanger.

[0033] In practical use, the brake hanger is welded and fixed to the bogie crossbeam 7 via the enlarged end 102 and the arc-shaped interface 201 on the stiffening plate 2. Then, the compact brake caliper unit is fixed to the brake hanger through the bolt holes 5 on the fixing plate 101. The pad 3 can adjust the installation height of the brake caliper unit according to actual needs. This design is simple and reasonable, easy to install, and has good strength and stability, meeting the usage requirements of the railway vehicle bogie braking system.

[0034] In summary, the brake hanger of this embodiment has a simple structure, mature technology, low cost and reliable performance. It can be widely used in railway vehicle bogies that adopt compact brake caliper units, such as intercity EMUs and subway vehicles, and has high engineering application value.

[0035] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the brake hanger of the railway vehicle bogie of this utility model, and can produce the positive effects described in this utility model.

[0036] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0037] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A brake hanger for a railway vehicle bogie, characterized in that: The device includes a top plate (1), at least one stiffener plate (2), and at least one pad plate (3). The stiffener plate (2) and the pad plate (3) are both fixed to the lower surface of the top plate (1). The top plate (1) includes a fixing plate (101) for fixing a compact brake caliper unit and an enlarged end (102) extending outward and curving upward along one end of the fixing plate (101). The enlarged end (102) is configured to be welded to the bogie crossbeam (7). The width of the enlarged end (102) is greater than the width of the fixing plate (101). The stiffener plate (2) is provided with an arc-shaped interface (201) that matches the arc surface of the bogie crossbeam (7) at one end near the enlarged end (102). The arc-shaped interface (201) is configured to be welded to the bogie crossbeam (7). The pad plate (3) is used to adjust the suspension height of the compact brake caliper unit.

2. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The ratio between the width of the enlarged end (102) and the width of the fixed plate (101) is (1.2-1.5):

1.

3. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The upward angle of the enlarged end (102) relative to the fixed plate (101) is 10-30°.

4. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: There is a gap between the arc-shaped interface (201) and the enlarged end (102).

5. The brake hanger for a railway vehicle bogie according to claim 1, characterized in that: The enlarged end (102) has a trapezoidal notch (4) at the contact end with the bogie crossbeam (7).

6. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The contact ends of the stiffening plate (2) with the bogie crossbeam (7) and the top plate (1) are all provided with trapezoidal notches (4).

7. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The fixing plate (101) is provided with multiple bolt holes (5) for fixing to the compact brake caliper unit by bolts.

8. The brake hanger for a railway vehicle bogie according to claim 7, characterized in that: The pad (3) is fixed to the lower surface of the top plate (1) below the bolt hole (5).

9. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The fixing plate (101) has a weight reduction hole (6) in the middle.

10. The brake hanger of the railway vehicle bogie according to claim 1, characterized in that: The top plate (1), stiffening plate (2) and pad plate (3) are connected by welding to form an integral structure.

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