Straddle-type monorail car body bogie connecting seat and car body bogie

Abstract

The utility model provides a kind of straddle-type monorail car body bogie connecting seat and car body bogie, it is related to railway vehicle technical field, straddle-type monorail car body bogie connecting seat is applied on car body bogie;Including air spring seat plate and car body connecting seat;Air spring seat plate is circular, and is provided with through-hole;Car body connecting seat is installed on air spring seat plate, and car body connecting seat is provided with with the air spring intake cap being communicated with through-hole;Car body connecting seat side is provided with with the air spring gas supply hole being communicated with air spring intake cap;Air spring seat plate and car body connecting seat are integrally formed part.The utility model realizes seamless connection by integral casting, fundamentally eliminates welding stress concentration risk.Integral structure makes air passage completely built-in in solid component, eliminates the possibility of joint leakage.Effectively solve the technical problems of poor air tightness and stress concentration of welded structure.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and more specifically, to a straddle-type monorail bogie connecting seat and a bogie. Background Technology

[0002] As a key connecting component between the car body and the bogie, the bogie connecting seat's structural performance directly affects the safety and comfort of train operation. Traditional rail vehicles typically employ a split welded structure for the bogie connecting seat, which is assembled from the air spring seat plate and the car body connecting seat through a welding process. This traditional structure has significant technical drawbacks: First, the thermal stress generated during welding can lead to stress concentration areas within the material, making it prone to fatigue cracks under long-term alternating loads; second, the airtightness of the weld joints is difficult to guarantee, especially under the working pressure of the air springs, which can easily cause gas leakage, severely affecting the air spring's support performance; third, the overall stiffness distribution of the welded structure is uneven, making it prone to localized deformation during vehicle operation. Furthermore, the split structure also faces challenges such as difficulty in controlling assembly precision and high manufacturing costs. Utility Model Content

[0003] The purpose of this invention is to eliminate the problem of thermal stress concentration during the welding of the bogie connecting seat, and to improve airtightness and overall structural rigidity.

[0004] To solve the above problems, this utility model provides a straddle-type monorail bogie connecting seat and a bogie.

[0005] In a first aspect, this utility model provides a straddle-type monorail bogie connecting seat, which is applied to a car body bogie; it includes an air spring seat plate and a car body connecting seat; the air spring seat plate is circular and has a through hole; the car body connecting seat is installed on the air spring seat plate, and the car body connecting seat has an air spring inlet cap communicating with the through hole; an air spring supply hole communicating with the air spring inlet cap is opened on one side of the car body connecting seat; the air spring seat plate and the car body connecting seat are integrally formed parts.

[0006] The beneficial effects of the straddle-type monorail car body bogie connecting seat of this utility model are:

[0007] The air spring seat plate is integrally cast to form a circular bearing surface, with a through hole penetrating the central axis of the seat plate. The vehicle body connecting seat and the air spring seat plate are integrally formed during the casting process, with the air spring inlet cap inside the vehicle body connecting seat maintaining communication with the through hole. The air spring supply port extends laterally through the side wall of the vehicle body connecting seat, forming an L-shaped airflow channel with the air spring inlet cap. When an external air source is connected to the air spring supply port, compressed air sequentially enters the air spring cavity through the supply port, the air spring inlet cap, and the through hole. The integrally molded structure eliminates traditional welded seams, ensuring the airflow channel's sealing integrity. The circular seat plate structure allows for uniform radial load distribution, avoiding localized stress concentration. This invention achieves seamless connection through integral casting, fundamentally eliminating the risk of welding stress concentration. The integral structure completely integrates the air channel into the solid component, eliminating the possibility of seam leakage. It effectively solves the technical problems of poor airtightness and stress concentration in welded structures. The integrally molded structure ensures complete sealing of the air channel, guaranteeing the normal operating pressure of the air spring. The seamless connection method improves the overall structural strength and extends the service life of the components.

[0008] Optionally, a weight-reducing groove is provided on the top of the vehicle body connecting seat.

[0009] Optionally, the air supply hole of the air spring is a threaded hole.

[0010] Optionally, the bogie connecting seat further includes two spaced vertical ribs; the two vertical ribs are vertically installed on the air spring seat plate, and one end is vertically connected to the side wall of the car body connecting seat away from the air spring supply hole; the upper surface of the two vertical ribs away from the car body connecting seat is parallel to the air spring seat plate and forms a vertical stop surface; the vertical stop surface corresponds to the vertical stop seat on the car body bogie.

[0011] Optionally, the ends of the two vertical ribs furthest from the vehicle body connecting seat are connected to a transverse buffer seat.

[0012] Optionally, a drain hole is provided on the air spring seat plate located between the two vertical ribs.

[0013] Optionally, a positioning groove is provided on the vertical stop surface; an adjusting pad is installed on the vertical stop surface through the positioning groove.

[0014] Optionally, a fixing plate is provided on the side of the adjusting pad away from the vertical stop surface; buckles are provided on both sides of the fixing plate; and a groove is provided on the side wall of the vertical rib to cooperate with the buckles.

[0015] Optionally, the two ends of the vehicle body connecting seat are respectively provided with a lateral damper mounting seat and a vertical damper mounting seat.

[0016] Secondly, this utility model provides a car body bogie, including the straddle-type monorail car body bogie connecting seat as described above. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of the straddle-type monorail bogie connecting seat according to an embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Top view;

[0019] Figure 3 for Figure 1 Rear view;

[0020] Figure 4 This is a cross-sectional view of the straddle-type monorail bogie connecting seat according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing plate in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 110. Air spring seat plate; 120. Air spring inlet cap; 121. Air spring air supply hole; 130. Lateral damper mounting base; 140. Lateral buffer seat; 150. Vertical stop seat; 151. Positioning groove; 152. Clip groove; 160. Vertical damper mounting base; 170. Body connecting seat; 180. Drain hole; 200. Fixing plate; 201. Buckle; 300. Adjusting shim. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0025] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0026] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] like Figure 1-5 As shown in the figure, this utility model provides a straddle-type monorail bogie connecting seat, which is applied to a bogie; it includes an air spring seat plate 110 and a bogie connecting seat 170; the air spring seat plate 110 is circular and has a through hole; the bogie connecting seat 170 is mounted on the air spring seat plate 110, and the bogie connecting seat 170 has an air spring inlet cap 120 communicating with the through hole; one side of the bogie connecting seat 170 has an air spring supply hole communicating with the air spring inlet cap 120; the air spring seat plate 110 and the bogie connecting seat 170 are integrally formed parts.

[0028] The air spring seat plate 110 refers to the circular base that supports the air spring. It can be integrally formed using a casting process; the circular structure helps to evenly distribute load stress. The car body connecting seat 170 is a functional component connecting the car body and the bogie. It can be cast synchronously with the air spring seat plate 110 to form an integral unit, avoiding structural weakening caused by separate welding. The through hole is an axial channel penetrating the air spring seat plate 110, which can be designed as a stepped hole structure to establish an airflow path. The air spring inlet cap 120 is an air chamber structure located within the car body connecting seat 170. It can be arranged coaxially with the through hole to form a continuous airflow channel. The air spring supply hole is an interface for connecting to an external air source. It can be machined into a threaded hole structure for easy installation of a sealing joint.

[0029] Specifically, the air spring seat plate 110 is integrally cast to form a circular bearing surface, with a through hole penetrating the central axis of the seat plate. The vehicle body connecting seat 170 and the air spring seat plate 110 are fused into an integral structure during the casting process, and the air spring inlet cap 120 remains connected to the through hole inside the vehicle body connecting seat 170. The air spring supply port extends laterally through the side wall of the vehicle body connecting seat 170, forming an L-shaped airflow channel with the air spring inlet cap 120. When an external air source is connected to the air spring supply port, compressed air enters the air spring cavity sequentially through the supply port, the air spring inlet cap 120, and the through hole. The integrally formed structure eliminates traditional welded seams, ensuring the sealing integrity of the airflow channel. The circular seat plate structure allows the load to be evenly distributed radially, avoiding local stress concentration. This embodiment achieves seamless connection through integral casting, fundamentally eliminating the risk of welding stress concentration. The integral structure allows the air channel to be completely built into the solid component, eliminating the possibility of seam leakage. The circular bearing surface design is more in line with the mechanical distribution law than the traditional polygonal structure, improving the structural load-bearing efficiency. The manufacturing process eliminates welding, simplifying the production flow and reducing the difficulty of quality control. It effectively solves the technical challenges of poor airtightness and stress concentration in welded structures. The integral molding structure ensures complete sealing of air channels, guaranteeing the normal operating pressure of the air springs. Seamless connections improve the overall structural strength and extend component lifespan. Circular bearing surfaces optimize stress distribution and enhance the reliability of the bogie connection system.

[0030] Optionally, a weight-reducing groove is provided on the top of the vehicle body connecting seat 170.

[0031] The weight-reduction groove refers to a recessed structure machined into the top of the body connecting seat 170. This can be achieved through milling or casting processes, and its shape can be rectangular, trapezoidal, or other regular geometric forms. This structure achieves lightweight design by removing redundant materials while ensuring the overall strength of the body connecting seat 170.

[0032] Specifically, the weight-reducing groove is located in the non-load-bearing area at the top of the body connecting seat 170, and is machined on the integrally formed base of the body connecting seat 170 and the air spring seat plate 110 using CNC machining equipment. Since the body connecting seat 170 and the air spring seat plate 110 adopt an integral casting structure, the opening of the weight-reducing groove does not disrupt the structural continuity between the connecting seat and the seat plate, thereby reducing the overall weight while maintaining the integrity of the load transmission path between the connecting seat and the seat plate.

[0033] Optionally, the air supply hole of the air spring is a threaded hole.

[0034] A threaded hole refers to a through hole with an internal thread structure, which can be made using metric or imperial thread specifications. The thread structure is formed on the side wall of the vehicle body connecting seat 170 by machining. The function of the threaded hole is to provide a standardized connection interface for the air supply pipeline, and to achieve air circuit sealing through threaded engagement to prevent gas leakage.

[0035] Specifically, the air spring's air supply port utilizes a threaded design, allowing the air supply pipe connector to be screwed into the hole and press against the sealing ring, thus forming a stable airtight connection. The machining precision of the inner wall of the threaded hole can be controlled to meet standard thread tolerance requirements, for example, using a fine thread of M12×1.5 to match the corresponding pipe connector. During assembly, after the air supply pipe connector is tightened through the thread, its end face presses against the sealing surface of the air spring's air supply port, forming a double-sealing structure. This embodiment achieves a stable sealed connection between the air supply pipe and the air spring's air supply port, effectively preventing gas leakage and ensuring the air spring's inflation efficiency. The threaded structure also simplifies the pipe disassembly and maintenance process, avoiding damage to the sealing surface caused by repeated disassembly and assembly.

[0036] Optionally, the bogie connecting seat further includes two spaced vertical ribs; the two vertical ribs are vertically installed on the air spring seat plate 110, and one end is vertically connected to the side wall of the car body connecting seat 170 away from the air spring air supply hole; the upper surface of the two vertical ribs away from the car body connecting seat 170 is parallel to the air spring seat plate 110 and forms a vertical stop surface; the vertical stop surface corresponds to the vertical stop seat 150 on the car body bogie.

[0037] The vertical rib refers to a reinforcing structure perpendicular to the air spring seat plate 110, which can be made of steel plate or casting. It is used to enhance the connection strength between the air spring seat plate 110 and the car body connecting seat 170, and to transmit vertical loads. The vertical stop surface refers to the planar structure formed at the end of the vertical rib, which can be formed by machining or casting. It is used to cooperate with the vertical stop seat 150 of the car body bogie to limit the displacement range of the connecting seat during vertical movement.

[0038] Specifically, the vertical rib is fixed vertically to the air spring seat plate 110, with one end near the vehicle body connecting seat 170 vertically connected to the side wall, and the other end extending to the edge of the air spring seat plate 110 and forming a horizontal plane. The vertical stop surface contacts the vertical stop seat 150 through this plane, bearing the vertical impact force during vehicle operation, and evenly transferring the load to the air spring seat plate 110 through the vertical rib. Since the vertical rib is integrally formed with the air spring seat plate 110 and the vehicle body connecting seat 170, the risk of stress concentration at the welded joints is avoided.

[0039] Optionally, the ends of the two vertical ribs away from the vehicle body connecting seat 170 are connected to a transverse buffer seat 140.

[0040] The lateral buffer seat 140 refers to the fixed structure used to install the lateral buffer. Specifically, it can be implemented using a metal seat with bolt holes, which is used to absorb the lateral impact force generated during vehicle operation and reduce vibration transmission.

[0041] Specifically, the lateral damper seat 140 is fixed to the extension end of the vertical rib, forming the mounting interface for the lateral damper. During vehicle operation, lateral impact force is transmitted to the vertical rib through the lateral damper, and the load is distributed by the integrated structure of the vertical rib and the air spring seat plate 110, avoiding stress concentration. The integrated design of the vertical rib and the lateral damper seat 140 solves both the welding stress problem and effectively absorbs lateral impact force. This reduces the lateral vibration amplitude between the car body and the bogie, extends the service life of the connecting seat, and reduces the risk of airtightness failure due to welding defects.

[0042] Optionally, a drain hole 180 is provided on the air spring seat plate 110 located between the two vertical ribs.

[0043] The drain hole 180 refers to a through hole provided on the air spring seat plate 110. It can be a circular or elliptical hole, used to drain liquid or impurities accumulated on the surface of the air spring seat plate 110. The drain hole 180 is located in the area between two vertical ribs, an area prone to water accumulation due to structural limitations. The drain hole 180 helps to prevent corrosion or icing problems caused by liquid retention.

[0044] Specifically, in the area formed by the connection between the air spring seat plate 110 and the two vertical ribs, since the vertical ribs are installed vertically on the surface of the air spring seat plate 110, this area is prone to forming a low-lying structure where rainwater or condensation may accumulate. Drainage holes 180 are opened at the center or near the edge of this area. Liquid is discharged through the drainage holes 180 by gravity, preventing long-term water accumulation from causing corrosion or frost damage to the air spring seat plate 110 and surrounding connecting structures. Furthermore, the diameter of the drainage holes 180 can be adjusted according to actual drainage needs, for example, using holes with a diameter range of 5 mm to 15 mm to ensure a balance between drainage efficiency and structural strength. This embodiment, through an integrated molding structure combined with the drainage hole 180 design, eliminates welding defects while actively guiding accumulated water out, avoiding the negative impact of liquid retention on the performance of the connecting seat.

[0045] Optionally, a positioning groove 151 is provided on the vertical stop surface; an adjusting pad 300 is installed on the vertical stop surface through the positioning groove 151.

[0046] The positioning groove 151 refers to a groove structure machined on the vertical stop surface, which can be achieved by milling or casting processes. It is used to define the installation position of the adjusting shim 300 and prevent its displacement. The adjusting shim 300 refers to a replaceable component embedded in the positioning groove 151. It can be made of metal or polymer composite material, and the gap between the vertical stop surface and the vertical stop seat 150 of the bogie can be adjusted by changing its thickness.

[0047] Specifically, the vertical stop surface is connected to the air spring seat plate 110 via vertical ribs to form a rigid support structure. The positioning groove 151 is machined along the length of the vertical stop surface, and its cross-sectional shape matches the contour of the adjusting shim 300. After the adjusting shim 300 is embedded in the positioning groove 151, it is fixed by bolts or snap-fit. When the vertical stop seat 150 of the car body bogie contacts the vertical stop surface, the adjusting shim 300 can absorb impact loads and compensate for assembly errors. By replacing adjusting shims 300 of different thicknesses, the gap range between the vertical stop surface and the car body bogie can be precisely controlled. Through the cooperation of the positioning groove 151 and the adjusting shim 300, modular adjustment of the gap is achieved, while avoiding precision loss caused by overall structural deformation.

[0048] Optionally, a fixing plate 200 is provided on the side of the adjusting pad 300 away from the vertical stop surface; buckles 201 are provided on both sides of the fixing plate 200; and a slot 152 that cooperates with the buckle 201 is provided on the side wall of the vertical rib.

[0049] The fixing plate 200 is a plate-like structure used to fix the adjusting shim 300. It can be made by stamping metal sheets and provides a stable mounting base for the adjusting shim 300. The clips 201 are protruding structures on both sides of the fixing plate 200, which can be injection molded from elastic material. They cooperate with the slots 152 to achieve quick locking, avoiding stress concentration caused by traditional welding. The slots 152 are grooves formed on the side wall of the vertical rib, which can be machined to accommodate the clips 201 and restrict the displacement of the fixing plate 200, thereby ensuring the positioning accuracy of the adjusting shim 300.

[0050] Specifically, the fixing plate 200 is embedded in the slots 152 of the vertical rib sidewall by the buckles 201 on both sides, forming a mechanical locking structure. The adjusting pad 300 is clamped between the fixing plate 200 and the vertical stop surface, and quick installation and removal are achieved through the elastic cooperation of the buckles 201 and the slots 152. During the operation of the bogie, the contact force between the vertical stop surface and the vertical stop seat 150 is transmitted to the fixing plate 200 through the adjusting pad 300. The cooperation of the buckles 201 and the slots 152 can absorb part of the impact load, while avoiding fatigue cracks that may occur in the welded connection. This embodiment adopts an elastic locking structure of buckles 201 and slots 152, which not only eliminates the influence of welding process on airtightness, but also improves assembly efficiency, while ensuring the stability of the adjusting pad 300 through mechanical interlocking. This achieves quick installation and reliable fixation of the adjusting pad 300, improving the overall structural stability and maintenance convenience of the bogie connecting seat.

[0051] Optionally, the two ends of the vehicle body connecting seat 170 are respectively provided with a lateral damper mounting seat 130 and a vertical damper mounting seat 160.

[0052] The transverse damper mounting bracket 121 has an air spring supply hole; 130 refers to the connection structure used to fix the transverse damper, which can be implemented using a boss structure with bolt holes. This structure can withstand the transverse impact loads generated during vehicle operation. The vertical damper mounting bracket 160 refers to the support component used to install the vertical damper. Specifically, it can be implemented by welding or casting to form a base with locating pins. This base can effectively disperse vertical vibration energy.

[0053] Specifically, in the structure where the air spring seat plate 110 and the vehicle body connecting seat 170 are integrally formed, the lateral damper mounting seat 121 has an air spring supply hole 130 integrated into one end of the vehicle body connecting seat 170. The bolt hole axis of this seat is parallel to the vehicle's lateral axis, allowing direct installation of the hinged end of the lateral damper. The vertical damper mounting seat 160 is located at the other end of the vehicle body connecting seat 170, with its locating pin forming a clearance fit with the vertical damper's mounting hole. The vertical damper is then quickly positioned and installed using fastening bolts. This arrangement provides independent mounting reference surfaces for the lateral and vertical damping systems, preventing vibration transmission paths from intersecting.

[0054] In some specific embodiments, the transverse damper mounting base 121 has an air spring supply hole; 130 can be designed as a U-shaped groove 152 structure, for example, made of a 30mm thick steel plate bent into shape, with anti-slip texture on its inner wall. The vertical damper mounting base 160 can be configured with an adjustable shim set, for example, a 3mm thick stainless steel shim is set between the base and the damper to compensate for assembly tolerances.

[0055] This invention effectively solves the problem of insufficient installation accuracy of shock absorbers caused by the welded structure of traditional bogie connecting seats. Through integrated design, it enables precise installation positioning of the lateral and vertical damping systems, while reducing the number of parts and improving the vibration control performance during vehicle operation.

[0056] This utility model provides a car body bogie, including the straddle-type monorail car body bogie connecting seat as described above.

[0057] The advantages of the bogie in this embodiment compared to the prior art are the same as those of the straddle-type monorail bogie connecting seat described above, and will not be repeated here.

[0058] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A straddle-type monorail bogie connecting seat, used on a car body bogie; characterized in that, It includes an air spring seat plate (110) and a vehicle body connecting seat (170); the air spring seat plate (110) has a circular outline and is provided with a through hole; the vehicle body connecting seat (170) is mounted on the air spring seat plate (110), and the vehicle body connecting seat (170) is provided with an air spring inlet cap (120) that communicates with the through hole; an air spring supply hole that communicates with the air spring inlet cap (120) is provided on one side of the vehicle body connecting seat (170); the air spring seat plate (110) and the vehicle body connecting seat (170) are integrally formed parts.

2. The straddle-type monorail car body bogie connecting seat according to claim 1, characterized in that, The top of the vehicle body connecting seat (170) is provided with a weight reduction groove.

3. The straddle-type monorail bogie connecting seat according to claim 1, characterized in that, The air supply hole of the air spring is a threaded hole.

4. The straddle-type monorail bogie connecting seat according to claim 1, characterized in that, It also includes two spaced vertical ribs; the two vertical ribs are vertically installed on the air spring seat plate (110), and one end is vertically connected to the side wall of the vehicle body connecting seat (170) away from the air spring air supply hole; the upper surface of the two vertical ribs away from the vehicle body connecting seat (170) is parallel to the air spring seat plate (110) and forms a vertical stop surface; the vertical stop surface corresponds to the vertical stop seat (150) on the vehicle body bogie.

5. The straddle-type monorail bogie connecting seat according to claim 4, characterized in that, The two vertical ribs are connected to a transverse buffer seat (140) at the end away from the vehicle body connecting seat (170).

6. The straddle-type monorail bogie connecting seat according to claim 4, characterized in that, A drain hole (180) is provided on the air spring seat plate (110) located in one of the two vertical ribs.

7. The straddle-type monorail bogie connecting seat according to claim 4, characterized in that, A positioning groove (151) is provided on the vertical stop surface; an adjusting pad (300) is installed on the vertical stop surface through the positioning groove (151).

8. The straddle-type monorail bogie connecting seat according to claim 7, characterized in that, A fixing plate (200) is provided on the side of the adjusting pad (300) away from the vertical stop surface; buckles (201) are provided on both sides of the fixing plate (200); a slot (152) is provided on the side wall of the vertical rib to cooperate with the buckle (201).

9. The straddle-type monorail car body bogie connecting seat according to any one of claims 1 to 8, characterized in that, The two ends of the vehicle body connecting seat (170) are respectively provided with a transverse damper mounting seat (130) and a vertical damper mounting seat (160).

10. A car body bogie, characterized in that, Includes the straddle-type monorail bogie connecting seat as described in any one of claims 1 to 9.

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