A combined side bearing assembly for a bogie

Abstract

The utility model discloses a combined side bearing assembly for bogie relates to railway parts field, and its technical scheme main points are: including by the side bearing seat of bottom plate and both side board, be equipped with the top plate opposite with it on the bottom plate top, be equipped with a plurality of support spring between top plate and bottom plate, and be equipped with the rubber elastomer of connecting both sides between top plate both sides and side board, detachable connection between rubber elastomer and top plate and side board, detachable connection between support spring and top plate and bottom plate, effect is when the side bearing assembly long -term service appears rubber elastomer ageing cracking or support spring fatigue failure local loss problem such as, need not integral replacement assembly, only need to remove the connection of the damaged above two damaged components, take off ageing rubber elastomer from between top plate and side board, or take off the support spring from between top plate and bottom plate, replace new corresponding component after, reassemble through detachable mode, can quick recovery side bearing assembly's use performance.

Description

Technical Field

[0001] This utility model relates to the field of railway components, and more specifically, it relates to a combined side bearing assembly for bogies. Background Technology

[0002] In the field of rail transit equipment such as railway freight cars, the side bearing components of bogies are key load-bearing and buffering components that directly affect the stability, comfort and safety of vehicle operation. They need to withstand the vertical load and longitudinal impact of the vehicle for a long time, and achieve vibration buffering and attitude adjustment through their own structural characteristics.

[0003] While current bogie side bearing assemblies on the market have optimized stiffness matching through a combination structure of "support spring + rubber elastomer," which has improved the problems of permanent deformation and short service life of traditional single rubber side bearings to some extent, the existing structures often use a vulcanization molding process to fix the rubber elastomer to the top plate and side wall. The support spring is also often welded or fixed to the top plate and bottom plate to form an inseparable assembly relationship. This integrated design has significant limitations: after long-term service, if local wear problems such as aging and cracking of the rubber elastomer or fatigue failure of the support spring occur, since the core functional components cannot be disassembled and replaced individually, the staff can only replace the entire side bearing assembly. This not only leads to the waste of resources of undamaged parts and greatly increases vehicle maintenance costs, but also requires a long downtime due to the whole replacement, extending the vehicle maintenance cycle and affecting the operational efficiency of rail transit equipment.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a combined side bearing assembly for bogies. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a combined side bearing assembly for bogies.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a combined side bearing assembly for a bogie, comprising a side bearing seat composed of a base plate and two side plates, a top plate opposite to the base plate, a plurality of support springs between the top plate and the base plate, and rubber elastomers connecting the two between the top plate and the side plates, wherein the rubber elastomers are detachably connected to the top plate and the side plates, and the support springs are detachably connected to the top plate and the base plate, thereby forming a combined structure.

[0007] Preferably, the base plate has a convex groove with an opening on one side, which is closed by a sealing plate. The bottom end of the support spring is fixedly connected to a convex block that is inserted into the convex groove from the opening. Screws A are installed on both sides of the opening of the convex groove on the surface of the base plate. Through holes A are opened on both sides of the surface of the sealing plate for the screws A to pass through. Nuts A are threaded onto the outer side wall of the screws A.

[0008] Preferably, a top block is fixedly connected to the top end of the support spring, and a plurality of screws B are fixedly connected to the top end of the top block. The bottom end of the top plate is provided with a lower opening groove for the top block to be inserted. The top end of the top plate is provided with a plurality of through holes B that communicate with the lower opening groove and allow the screws B to pass through. Nuts B are threadedly connected to the outer side wall of the screws B.

[0009] Preferably, the top plate has grooves A on both sides, and the side plates have grooves B on opposite surfaces. Positioning rods are fixedly connected to the inner bottom walls of grooves A and B. Each positioning rod has a screw hole at its top end. Positioning blocks are installed at both ends of the rubber elastomer. Each positioning block has a through groove that passes through its upper and lower surfaces and allows the positioning rod to pass through. Screws are threaded into the screw holes. After the positioning blocks are inserted into the positioning rods for positioning, the top ends of the positioning rods and the positioning blocks are flush. After the screws are installed, the screw heads press against the positioning blocks to fix them to the positioning rods.

[0010] Preferably, the rubber elastomer and the positioning block are vulcanized and molded as a single unit.

[0011] Preferably, the positioning block has a reinforcing hole inside, and the material of the rubber elastomer is filled in the reinforcing hole.

[0012] Preferably, the number of the support springs is four, arranged in an array between the top plate and the bottom plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In this utility model, the support spring and the rubber elastomer are connected to other components on the side bearing assembly in a combined manner. When the side bearing assembly experiences localized wear problems such as aging and cracking of the rubber elastomer or fatigue failure of the support spring after long-term service, it is not necessary to replace the entire assembly. Simply disconnect the connection between the two damaged components, remove the aged rubber elastomer from between the top plate and the side plate, or remove the failed support spring from between the top plate and the bottom plate, replace the corresponding new components, and reassemble them in a detachable manner. This will quickly restore the performance of the side bearing assembly, thereby avoiding the waste of resources of undamaged components, reducing maintenance costs, shortening maintenance downtime, and improving the operational efficiency of rail transit equipment, thus solving the problems in the background art. 2. In this utility model, the support spring achieves precise lateral positioning through the cooperation of "convex block + convex groove". Combined with the fixing of the sealing plate and nut A, it can not only prevent the support spring from shifting laterally when under force, but also form a stable constraint by the sealing plate adhering to the convex block, avoiding longitudinal loosening. Similarly, the insertion and cooperation of the "top block + lower opening groove" at the top of the support spring and the fixing of screw B and nut B are also achieved by positioning first and then fixing, which further enhances the stability of the connection between the support spring and the top plate and prevents the connection from loosening due to vibration during vehicle operation. 3. In this utility model, the rubber elastomer also achieves precise positioning of the installation position through the cooperation of "positioning block + positioning rod + through groove", avoiding the rubber elastomer from affecting the stiffness matching due to installation offset. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 3 Enlarged view of the local structure of A; Figure 3 This is a schematic diagram of the specific structure of this utility model without the sealing plate installed; Figure 4 This is a schematic diagram of the specific structure of the side bearing in this utility model; Figure 5 This is a schematic diagram of the specific structure of the top plate in this utility model; Figure 6 This is a schematic diagram of the support spring connection structure in this utility model; Figure 7 This is a schematic diagram of the rubber elastomer connection structure in this utility model; Figure 8 This is a schematic diagram of the specific structure of the positioning block surface in this utility model; Figure 9 This is a schematic diagram of the specific structure of the sealing plate in this utility model.

[0015] In the diagram: 1. Side bearing; 101. Base plate; 1011. Convex groove; 102. Side plate; 1021. Groove B; 2. Top plate; 201. Lower opening groove; 202. Through hole B; 203. Groove A; 3. Support spring; 4. Rubber elastomer; 5. Convex block; 6. Screw A; 7. Sealing plate; 701. Through hole A; 8. Nut A; 9. Top block; 10. Screw B; 11. Nut B; 12. Positioning rod; 1201. Screw hole; 13. Positioning block; 1301. Through groove; 1302. Reinforcing hole; 14. Screws. Detailed Implementation

[0016] like Figure 1-9 As shown, this utility model provides a combined side bearing assembly for a bogie, including a side bearing seat 1 composed of a base plate 101 and two side plates 102. A top plate 2 is provided above the base plate 101 and opposite it. Multiple support springs 3 are provided between the top plate 2 and the base plate 101. Rubber elastomers 4 are provided between the two sides of the top plate 2 and the side plates 102 to connect the two. The number of support springs 3 is four, which are arranged in an array between the top plate 2 and the base plate 101. The four arrayed support springs 3 can evenly distribute the load borne by the top plate 2 to the base plate 101. The rubber elastomers 4 are detachably connected to the top plate 2 and the side plates 102, and the support springs 3 are detachably connected to the top plate 2 and the base plate 101.

[0017] In this invention, the support spring 3 and the rubber elastomer 4 are connected to other components on the side bearing assembly in a combined manner. First, the side bearing seat 1, composed of the base plate 101 and the side plate 102, serves as the basic support structure. The top plate 2 is correspondingly positioned above the base plate 101. Then, multiple support springs 3 are assembled between the top plate 2 and the base plate 101 via a detachable connection. Simultaneously, the rubber elastomer 4 is assembled between the sides of the top plate 2 and the side plate 102, completing the overall assembly of the combined side bearing assembly. During vehicle operation, the support spring 3 bears the vertical load, achieving vertical buffering through its own elastic deformation. The rubber elastomer 4 provides longitudinal stiffness by connecting the top plate 2 and the side plate 102 to cope with longitudinal impacts. The two work together... The components work together to meet the bogie's stiffness requirements, ensuring vehicle stability and vibration damping. When the side bearing assembly experiences localized wear and tear, such as aging and cracking of the rubber elastomer 4 or fatigue failure of the support spring 3, it is not necessary to replace the entire assembly. Simply disconnect the damaged components, remove the aged rubber elastomer 4 from between the top plate 2 and the side plate 102, or remove the failed support spring 3 from between the top plate 2 and the bottom plate 101. Replace the corresponding components with new ones and reassemble them in a detachable manner. This will quickly restore the performance of the side bearing assembly, thereby avoiding the waste of resources from undamaged components, reducing maintenance costs, shortening maintenance downtime, and improving the operational efficiency of rail transit equipment.

[0018] The following is the specific structure of the detachable part: A convex groove 1011 with an opening on one side is provided on the base plate 101. This opening is sealed by a sealing plate 7. A convex block 5, inserted into the convex groove 1011 through the opening, is fixedly connected to the bottom end of the support spring 3. Screws A6 are installed on both sides of the opening of the convex groove 1011 on the surface of the base plate 101. Through holes A701 for the screws A6 to pass through are provided on both sides of the surface of the sealing plate 7. Nuts A8 are threaded onto the outer wall of the screws A6. A top block 9 is fixedly connected to the top of the support spring 3, and multiple screws B10 are fixedly connected to the top of the top block 9. A lower opening groove 201 for the top block 9 to be inserted is provided at the bottom end of the top plate 2. Multiple through holes B202 communicating with the lower opening groove 201 and for the screws B10 to pass through are provided at the top end of the top plate 2. Nut B11 is threaded onto the outer wall of 10. Grooves A203 are provided on both sides of the top plate 2. Grooves B1021 are provided on the opposite surfaces of the side plates 102. Positioning rods 12 are fixedly connected to the inner bottom walls of grooves A203 and B1021. Screw holes 1201 are provided at the top of the positioning rods 12. Positioning blocks 13 are installed at both ends of the rubber elastomer 4. Through slots 1301 are provided on the positioning blocks 13, which pass through both their upper and lower surfaces and allow the positioning rods 12 to pass through. Screws 14 are threaded into the screw holes 1201. After the positioning blocks 13 are inserted into the positioning rods 12 for positioning, the top of the positioning rods 12 and the top of the positioning blocks 13 are flush. After the screws 14 are installed, the head of the screws 14 abuts against the positioning blocks 13 to fix the positioning blocks 13 and the positioning rods 12.

[0019] When installing the support spring 3, first insert the convex block 5 at its bottom end into the groove 1011 on the base plate 101 through the opening. Then, fit the sealing plate 7 against the opening, so that the screw A6 passes through the through hole A701 of the sealing plate 7. Tighten the nut A8 to fix the sealing plate 7. At this time, the sealing plate 7 is tightly attached to the convex block 5, thereby fixing the convex block 5 in the convex groove 1011. At the same time, insert the lower opening groove 201 of the top plate 2 into the top block 9 at the top of the support spring 3, so that the screw B10 passes through the through hole B202 of the top plate 2. Tighten the nut B11 to complete the fixation. When disassembling, first unscrew the nut B11 to separate the screw B10 from the top plate 2. Lift the top plate 2 to separate it from the top block 9. Then unscrew the nut A8 to remove the sealing plate 7 and take out the convex block 5 from the opening of the convex groove 1011.

[0020] When installing the rubber elastomer 4 (at this time, the installation of the support spring 3 has been completed), the positioning blocks 13 at both ends are aligned with the positioning rods 12 in the grooves A203 of the top plate 2 and B1021 of the side plate 102 through the through grooves 1301 respectively. After the top of the positioning block 13 is flush with the top of the positioning rod 12 (at this time, the bottom wall of the positioning block 13 is in contact with the inner bottom wall of the groove A203 or the groove B1021), the screw 14 is screwed into the screw hole 1201 of the positioning rod 12, so that the head of the screw 14 abuts against the positioning block 13 to complete the fixation. When disassembling, unscrew the screw 14 and pull the positioning block 13 out of the positioning rod 12 to separate the rubber elastomer 4 from the top plate 2 and the side plate 102.

[0021] The aforementioned support spring 3 achieves precise lateral positioning through the cooperation of "convex block 5 + convex groove 1011". Combined with the fixing of the sealing plate 7 and nut A8, it not only prevents the support spring 3 from shifting laterally under force, but also forms a stable constraint by the sealing plate 7 adhering to the convex block 5, avoiding longitudinal loosening. Similarly, the insertion and cooperation of the "top block 9 + lower opening groove 201" at the top of the support spring 3 with the fixing of the screw B10 and nut B11, through the method of positioning before fixing, further enhances the stability of the connection between the support spring 3 and the top plate 2, prevents the connection from loosening due to vibration during vehicle operation, and ensures that the support spring 3 is subjected to uniform force and has stable buffering performance. In addition, the rubber elastomer 4 also achieves precise positioning of the installation position through the cooperation of "positioning block 13 + positioning rod 12 + through groove 1301", avoiding the rubber elastomer 4 from affecting the stiffness matching due to installation misalignment.

[0022] Furthermore, the rubber elastomer 4 and the positioning block 13 are vulcanized into one piece, which can significantly improve the connection strength and structural stability of the two. The vulcanization process can form a tight molecular bond between the rubber material and the surface of the positioning block 13, preventing the rubber elastomer 4 from separating from the positioning block 13 or causing relative displacement due to continuous vibration and impact during vehicle operation. In addition, the positioning block 13 has a reinforcing hole 1302 inside, and the material of the rubber elastomer 4 is filled in the reinforcing hole 1302 to form a dual connection structure of "surface molecular bond + internal mechanical anchoring". The rubber material filled in the reinforcing hole 1302 is like an "anchor point" embedded in the positioning block 13. It can form a physical interlock with the rubber through the inner wall of the reinforcing hole 1302, further resisting the peeling force generated when the rubber elastomer 4 is subjected to force. Even under extreme working conditions of long-term high frequency and high load impact, it can effectively prevent delamination or cracking between the rubber elastomer 4 and the positioning block 13, significantly improving the fatigue resistance and durability of the structure.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A combined side bearing assembly for a bogie, comprising a side bearing seat (1) consisting of a base plate (101) and two side plates (102), a top plate (2) opposite to the base plate (101), a plurality of support springs (3) between the top plate (2) and the base plate (101), and rubber elastomers (4) connecting the two sides of the top plate (2) and the side plates (102), characterized in that: The rubber elastomer (4) is detachably connected to the top plate (2) and the side plate (102), and the support spring (3) is detachably connected to the top plate (2) and the bottom plate (101), thereby forming a combined structure.

2. A combined side bearing assembly for a bogie according to claim 1, characterized in that: The base plate (101) has a convex groove (1011) with an opening on one side. The opening is closed by a sealing plate (7). The bottom end of the support spring (3) is fixedly connected to a convex block (5) that is inserted into the convex groove (1011) from the opening. Screws A (6) are installed on both sides of the opening of the convex groove (1011) on the surface of the base plate (101). Through holes A (701) for the screws A (6) to pass through are opened on both sides of the surface of the sealing plate (7). Nuts A (8) are threaded onto the outer wall of the screws A (6).

3. A combined side bearing assembly for a bogie according to claim 1, characterized in that: The top of the support spring (3) is fixedly connected to a top block (9), and the top of the top block (9) is fixedly connected to a plurality of screws B (10). The bottom of the top plate (2) is provided with a lower opening groove (201) for the top block (9) to be inserted. The top of the top plate (2) is provided with a plurality of through holes B (202) that communicate with the lower opening groove (201) and allow the screws B (10) to pass through. The outer side wall of the screws B (10) is threaded with nuts B (11).

4. A combined side bearing assembly for a bogie according to claim 1, characterized in that: The top plate (2) has grooves A (203) on both sides, and the side plate (102) has grooves B (1021) on the opposite side. The inner bottom walls of grooves A (203) and B (1021) are fixedly connected to positioning rods (12). The top of the positioning rods (12) is provided with screw holes (1201). The rubber elastomer (4) is installed with positioning blocks (13) at both ends. The positioning blocks (13) are provided with through slots (1301) that pass through the upper and lower surfaces and allow the positioning rods (12) to pass through. The screw holes (1201) are threaded with screws (14). After the positioning blocks (13) are inserted into the positioning rods (12) for positioning, the top of the positioning rods (12) and the top of the positioning blocks (13) are flush. After the screws (14) are installed, the head of the screws (14) abuts against the positioning blocks (13) to fix the positioning blocks (13) and the positioning rods (12).

5. A combined side bearing assembly for a bogie according to claim 1, characterized in that: The rubber elastomer (4) and the positioning block (13) are vulcanized and molded into one piece.

6. A combined side bearing assembly for a bogie according to claim 5, characterized in that: The positioning block (13) has a reinforcing hole (1302) inside, and the material of the rubber elastomer (4) is filled in the reinforcing hole (1302).

7. A combined side bearing assembly for a bogie according to claim 1, characterized in that: The number of the support springs (3) is four, arranged in an array between the top plate (2) and the bottom plate (101).

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