Split support seat assembly for railway wagon bogie

Abstract

The utility model discloses a split type support seat assembly of railway wagon bogie relates to train bogie technical field. The utility model discloses a support seat body is installed on the side frame of bogie, and the support seat body includes inner seat and outer seat, and the inner seat is by horizontal board part and vertical board part integral and is the forged piece or rolled piece of T type structure, and the outer seat includes the sleeve body of rectangle, and the sleeve body one end is integrally equipped with the end plate, and the end plate and the sleeve body circumferential side between are equipped with a plurality of reinforcing bars. The utility model discloses a support seat is designed as the independent module of the split body with side frame, and the industry pain point of one loss replacement whole frame is solved completely, when the support seat appears crack, wear and tear and so on in the application, and maintenance personnel only need to cut off the welding point of connecting inner seat and outer seat, can the damaged support seat assembly whole take down, replace the new preassembled assembly module, greatly reduced the maintenance cost, improved the attendance rate of vehicle.

Description

Technical Field

[0001] This utility model belongs to the field of train bogie technology, and in particular relates to a split support assembly for a railway freight car bogie. Background Technology

[0002] As the core running gear of railway freight cars, the performance of the bogie directly affects the safety and stability of train operation. The existing bogie is mainly composed of wheelsets, side frames, bolsters and cross support devices. Among them, the cross support device is a key technology of the bogie. It effectively suppresses the diamond deformation of the side frames by cross-connecting the left and right side frames, and significantly improves the critical speed and curve passing performance of the bogie.

[0003] The cross bracing device is connected to the support base fixed on the side frame through the connection structure at its end. In the prior art, the support base is usually cast integrally with the side frame. Although this integral structure has the advantage of good overall rigidity, it also has the following significant drawbacks: 1. Extremely poor maintenance economy: As a key load-bearing component, the support seat is subjected to complex alternating loads for a long time, and is very prone to fatigue cracks or wear in stress concentration areas. Once damaged, the support seat and the side frame are an integral structure and cannot be replaced separately. The entire side frame must be removed from the bogie and replaced. As a large cast steel component, the side frame itself is expensive, and the replacement operation is time-consuming and labor-intensive, resulting in huge maintenance costs and low vehicle turnover efficiency.

[0004] 2. Conflict between materials and processes: The entire side frame is made of ordinary cast steel to meet the comprehensive performance requirements. It is impossible to use special materials or processes that are more wear-resistant and have higher strength for the support base, which is a local high-stress area, thus restricting the further improvement of its performance.

[0005] 3. Inconvenient maintenance: When performing flaw detection and inspection on the integrated support base, the operating space is limited, making it inconvenient to detect defects such as cracks, which increases safety hazards.

[0006] To address the aforementioned issues, a few separate support designs have emerged in the existing technology. For example, the support can be fixed to the side frame with bolts. However, bolted connections are prone to loosening under long-term, intense vibration conditions, making it difficult to guarantee reliability. Furthermore, creating bolt holes on the side frame can introduce new stress concentration points, which may become the origin of fatigue cracks and reduce the fatigue life of the side frame itself.

[0007] Therefore, there is an urgent need in this field for a new type of support that can both facilitate maintenance and ensure connection strength and reliability. Summary of the Invention

[0008] The purpose of this utility model is to provide a split support seat assembly for railway freight car bogies. By designing the support seat as an independent module separate from the side frame, the industry pain point of replacing the entire frame when one part is damaged is completely solved. When the support seat is damaged by cracks, wear, or other damage during use, maintenance personnel only need to cut off the welding points connecting the inner and outer seats to remove the damaged support seat assembly as a whole and replace it with a new pre-assembled assembly module. This reduces the original costly side frame replacement work that took several days to a low-cost operation that only requires replacing a standard module in a few hours, greatly reducing maintenance costs and improving the vehicle's uptime.

[0009] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a split support assembly for a railway freight car bogie, including a support body installed on the side frame of the bogie; The support body includes an inner seat and an outer seat; The inner seat is a forged or rolled part with a T-shaped structure, which is integrally formed by a horizontal plate and a vertical plate. The outer seat includes a rectangular sleeve body, one end of which is integrally provided with an end plate, and several reinforcing ribs are provided between the end plate and the peripheral side of the sleeve body. The bogie side frame is provided with a strip-shaped opening that mates with the horizontal plate portion. The horizontal plate portion passes through the strip-shaped opening. The vertical plate portion is in contact with the outer side of the bogie side frame. The sleeve body is slidably disposed on the horizontal plate portion located inside the bogie side frame. The end plate is in contact with the inner side of the bogie side frame. The end of the horizontal plate portion that is away from the vertical plate portion extends beyond the sleeve body, and the end of the sleeve body is fixed to the horizontal plate portion by welding. The horizontal plate has a waist-shaped opening along its length in the middle, and the sleeve body has a pin hole that communicates with the waist-shaped opening.

[0010] Furthermore, the bogie side frame consists of an inner frame and two side plates disposed on the inner and outer sides of the inner frame, and the strip-shaped opening is disposed on the two side plates.

[0011] Furthermore, a reinforcing sleeve is integrally provided between the two side plates, the reinforcing sleeve is connected to the strip opening, and the horizontal plate portion passes through the reinforcing sleeve.

[0012] Furthermore, a guide slope is provided on the inner side of the end of the sleeve body away from the end plate, and a deepened weld is formed between the guide slope of the sleeve body and the horizontal plate portion.

[0013] Furthermore, the pin hole penetrates the upper and lower plates of the sleeve body, and the pin hole is misaligned with the reinforcing rib.

[0014] Furthermore, the horizontal plate portion has an integrally formed conical edge structure at the end away from the vertical plate portion.

[0015] This utility model has the following beneficial effects: This invention completely solves the industry pain point of replacing the entire frame when the support seat is damaged by designing it as an independent module separate from the side frame. When the support seat is damaged by cracks, wear, or other damage during use, maintenance personnel only need to cut off the welding points connecting the inner and outer seats to remove the damaged support seat assembly as a whole and replace it with a new pre-assembled assembly module. This reduces the original costly side frame replacement work that took several days to a low-cost operation that only requires replacing a standard module in a few hours, greatly reducing maintenance costs and improving vehicle uptime.

[0016] This utility model forms a "double plate" structure by having the vertical plate of the inner seat attached to the outer side of the side frame, and the end plate of the outer seat attached to the inner side of the side frame, thus clamping the side frame from both sides. This design allows the load borne by the support seat to be transferred to the main structure of the side frame over a large area and evenly, with a smooth force flow path, effectively avoiding stress concentration. At the same time, the welding point is set at the step between the horizontal plate of the inner seat and the sleeve of the outer seat, avoiding the stress concentration and loosening problems caused by bolt connections, and also avoiding the thermal impact and performance damage to the base material caused by direct welding on the main body of the side frame, thus improving reliability from the structural root.

[0017] This invention sets the welding point of the inner and outer seats at the step between the inner seat's horizontal plate and the outer seat's sleeve. The main purpose is to connect the inner and outer seats, rather than to create a main load-bearing path. The load is mainly transmitted through the clamping structure of the inner and outer seats, and the welding point does not directly bear the main load, thereby greatly improving the fatigue life of the connection point and ensuring long-term reliability.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the split support seat assembly for a railway freight car bogie according to the present invention. Figure 2 This is a schematic diagram of the structure of this utility model after installation; The attached diagram lists the components represented by each number as follows: 1-Bogie side frame, 2-Inner seat, 3-Outer seat, 101-Strip opening, 102-Reinforcing sleeve, 103-Side plate, 201-Horizontal plate section, 202-Vertical plate section, 203-Oval opening, 204-Conical edge structure, 301-Sleeve body, 302-End plate, 303-Reinforcing rib, 304-Pin hole, 305-Guide slope. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-2 As shown, this utility model is a split support assembly for a railway freight car bogie, including a support body installed on the side frame 1 of the bogie; The support body includes an inner seat 2 and an outer seat 3, which are made of high-strength materials. The inner seat 2 is a forged or rolled part with a T-shaped structure, which is integrally formed by the horizontal plate part 201 and the vertical plate part 202. The outer seat 3 includes a rectangular sleeve body 301. One end of the sleeve body 301 is integrally provided with an end plate 302. Several reinforcing ribs 303 are provided between the end plate 302 and the peripheral side of the sleeve body 301. The bogie side frame 1 is provided with a strip opening 101 that cooperates with the horizontal plate portion 201. The horizontal plate portion 201 passes through the strip opening 101. The vertical plate portion 202 is in contact with the outer side of the bogie side frame 1. The sleeve body 301 is slidably disposed on the horizontal plate portion 201 located on the inner side of the bogie side frame 1. The end plate 302 is in contact with the inner side of the bogie side frame 1. The end of the horizontal plate portion 201 away from the vertical plate portion 202 extends beyond the sleeve body 301, and the end of the sleeve body 301 is fixed to the horizontal plate portion 201 by welding. The horizontal plate 201 has a waist-shaped opening 203 in the middle along the length direction, and the sleeve body 301 has a pin hole 304 that communicates with the waist-shaped opening 203. The pin hole 304 and the waist-shaped opening 203 form an installation position for connecting the cross support device.

[0023] Among them, such as Figure 2 As shown, the bogie side frame 1 consists of an inner frame and two side plates 103 disposed on the inner and outer sides of the inner frame, with strip openings 101 disposed on the two side plates 103.

[0024] Among them, such as Figure 2As shown, a reinforcing sleeve 102 is integrally provided between the two side plates 103. The reinforcing sleeve 102 is connected to the strip opening 101, and the horizontal plate portion 201 passes through the reinforcing sleeve 102.

[0025] Among them, such as Figure 1-2 As shown, a guide slope 305 is provided on the inner side of the end of the sleeve body 301 away from the end plate 302, and a deepened weld is formed between the guide slope 305 of the sleeve body 301 and the horizontal plate portion 201.

[0026] Among them, such as Figure 1-2 As shown, the pin hole 304 penetrates the upper and lower plates of the sleeve body 301, and the pin hole 304 is misaligned with the reinforcing rib 303.

[0027] Among them, such as Figure 1-2 As shown, the horizontal plate portion 201 has a conical edge structure 204 integrally provided at one end away from the vertical plate portion 202.

[0028] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A split-type support assembly for a railway freight car bogie, characterized in that: Includes the support body mounted on the bogie side frame (1); The support body includes an inner seat (2) and an outer seat (3); The inner seat (2) is a forged or rolled part with a T-shaped structure, which is integrally formed by the horizontal plate part (201) and the vertical plate part (202). The outer seat (3) includes a rectangular sleeve body (301). One end of the sleeve body (301) is integrally provided with an end plate (302). A number of reinforcing ribs (303) are provided between the end plate (302) and the peripheral side of the sleeve body (301). The bogie side frame (1) is provided with a strip opening (101) that cooperates with the horizontal plate part (201). The horizontal plate part (201) passes through the strip opening (101). The vertical plate part (202) is attached to the outer side of the bogie side frame (1). The sleeve body (301) is slidably disposed on the horizontal plate part (201) located inside the bogie side frame (1). The end plate (302) is attached to the inner side of the bogie side frame (1). The horizontal plate portion (201) extends beyond the sleeve body (301) at one end away from the vertical plate portion (202), and the end of the sleeve body (301) is fixed to the horizontal plate portion (201) by welding; The horizontal plate (201) has a waist-shaped opening (203) in the middle along the length direction, and the sleeve body (301) has a pin hole (304) that communicates with the waist-shaped opening (203).

2. The split support assembly for a railway freight car bogie according to claim 1, characterized in that, The bogie side frame (1) consists of an inner frame and two side plates (103) disposed on the inner and outer sides of the inner frame, and the strip opening (101) is disposed on the two side plates (103).

3. The split support assembly for a railway freight car bogie according to claim 2, characterized in that, A reinforcing sleeve (102) is integrally provided between the two side plates (103), the reinforcing sleeve (102) is connected to the strip opening (101), and the horizontal plate part (201) passes through the reinforcing sleeve (102).

4. The split support assembly for a railway freight car bogie according to claim 1, characterized in that, The sleeve body (301) has a guide slope (305) on the inner side of the end away from the end plate (302), and a deepened weld is formed between the guide slope (305) of the sleeve body (301) and the horizontal plate part (201).

5. The split support assembly for a railway freight car bogie according to claim 1, characterized in that, The pin hole (304) penetrates the upper and lower plates of the sleeve body (301), and the pin hole (304) is misaligned with the reinforcing rib (303).

6. The split support assembly for a railway freight car bogie according to claim 1, characterized in that, The horizontal plate (201) has a conical edge structure (204) integrally provided at one end away from the vertical plate (202).

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