Self-adaptive steering non-power subway bogie

Abstract

The utility model relates to a self-adaptive steering non-power subway bogie which solves the problems that an existing bogie needs a wide wheelbase and is small in turning radius. The axle box device is of a wheel set axle box built-in structure, an annular rubber spring is arranged in the axle box device, unit brake cylinders in the brake device are hung on reinforcing beams of the framework on the two sides respectively, a brake disc is installed on an axle, the framework is of a split structure and is divided into a pillow outer side and a pillow inner side, and the pillow outer side and the pillow inner side are connected to the framework through connecting pin shafts and bearings. The inter-framework shock absorbers are installed between the frameworks on the two sides, the air springs are installed on the transition beams, the height adjusting devices are installed between the framework reinforcing beams and the vehicle body, the frameworks on the two sides and the transition beams are connected through the connecting pin shafts, the inter-framework shock absorbers are installed between the frameworks on the two sides and symmetrically arranged, and the transition beams are connected with the frameworks and the secondary suspensions. According to the utility model, the self-adaptive steering function of the axle is realized according to the turning radius of the track, and meanwhile, the structure can save space and leave sufficient space for subsequent newly-added equipment.

Description

Technical Field

[0001] This utility model relates to a non-powered subway bogie with adaptive steering, belonging to the field of railway vehicles. Background Technology

[0002] Currently, domestic subway cars typically use bogies with a wheelbase of 2.3m, which can traverse curves with a minimum radius of 150m. To improve this, a reduced wheelbase is generally adopted, which limits bogie space and makes many equipment installation schemes impractical. With technological advancements, higher functional requirements are being placed on bogies, necessitating the installation of more equipment such as magnetic track brakes and online monitoring devices. This places greater demands on the usable space of the bogie area. Therefore, there is a need to invent a subway non-powered bogie device with a wider wheelbase and improved traversal capabilities on small curves. Utility Model Content

[0003] This invention provides an adaptive steering bogie with the ability to navigate small curves, thus solving the problem that current bogies require a wide wheelbase and a small turning radius.

[0004] This utility model is achieved through the following technical solution:

[0005] An adaptive steering non-powered subway bogie includes an axle box assembly 1, a braking device 2, a frame 3, an air spring 4, wheelsets 5, a height adjustment device 6, a connecting pin 7, a frame damper 8, and a transition beam 9. The axle box assembly 1 adopts a wheel-set axle box built-in structure with an internal annular rubber spring. The unit brake cylinders in the braking device 2 are respectively hung on the reinforcing beams of the two side frames 3, and the brake discs are mounted on the axles. The frame 3 adopts a split structure, divided into an outer side and an inner side. The outer side and the inner side are connected to the frame 3 by the connecting pin 7 and bearings. The frame damper 8 is installed between the two side frames 3. The air spring 4 is installed on the transition beam 9. The height adjustment device 6 is installed between the reinforcing beam of the frame 3 and the car body. The connecting pin 7 connects the two side frames 3 and the transition beam 9. The frame damper 8 is installed between the two side frames 3 in a symmetrical arrangement. The transition beam 9 connects the frame 3 and the secondary suspension.

[0006] The transition beam 9 has the function of an additional air chamber for the air spring 4.

[0007] The framework adopts an X-shaped structure.

[0008] Wheelset 5 uses conventional wheels.

[0009] The axle box assembly 1 has a built-in annular rubber spring.

[0010] Braking unit 2 uses a shaft disc brake.

[0011] The height adjustment device 6 uses a height adjustment valve and is controlled at two points.

[0012] This utility model bogie adopts a split frame structure, with the inner and outer frames of the bogie connected together by pins and bearings. This structure allows the axle to achieve adaptive steering based on the turning radius of the track. At the same time, the frame adopts an X-shaped structure, which saves space and leaves ample room for future additions of equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the bogie of this utility model;

[0014] Figure 2 This is a front view of the bogie. Detailed Implementation

[0015] like Figure 1 , 2 As shown, this utility model is a non-powered metro bogie with adaptive steering, mainly composed of: axle box assembly 1, braking device 2, frame 3, air spring 4, wheelset 5, height adjustment device 6, connecting pin 7, frame damper 8, and transition beam 9. The axle box assembly 1 adopts a wheel-set axle box built-in structure with a built-in annular rubber spring, which can effectively attenuate high-frequency vibrations between the wheel and rail. Simultaneously, the built-in axle box structure allows the frame 3 to have adaptive rotation capability. The unit brake cylinders in the braking device 2 are respectively hung on the reinforcing beams of the two side frames 3, and the brake discs are installed on the axles. The axle disc braking provides sufficient braking force to ensure the bogie's braking capability. The frame 3 adopts a split structure, divided into an outer and inner side, which are connected to the frame 3 by connecting pin 7 and bearings. This structure enables adaptive steering function with a wheelbase of 2.3m. Frame dampers 8 are installed between the two side frames 3 to attenuate vibrations between them. The air spring 4 is installed on the transition beam 9, and the two air spring components ensure sufficient span, allowing the bogie to rotate adaptively. The absence of anti-roll torsion bar devices reduces bogie manufacturing costs; wheelset 5 uses conventional wheels to ensure normal vehicle operation; height adjustment device 6 is installed between the reinforcing beam of frame 3 and the car body, employing two-point control to effectively control the height of the vehicle floor; connecting pin 7 connects the two sides of frame 3 to transition beam 9, enabling mutual rotation between the two sides of the frame, thus achieving the bogie's adaptive steering function; frame dampers 8 are installed symmetrically between the two sides of frame 3, attenuating vibrations between the frames and ensuring the working condition of connecting pin 7 and bearings; transition beam 9 connects frame 3 to secondary suspension, simultaneously achieving the connection function of the two sides of the frame, and also functions as an additional air chamber for air spring 4, further saving space and integrating more functions.

[0016] This utility model is a non-powered bogie with an adaptive steering capability and a wheelbase of 2.3m, capable of navigating small curves. It ensures that the bogie has sufficient design space to allow for the addition of equipment in the future, while also providing adequate conditions for the subsequent addition of equipment. In addition, unlike conventional bogies, the two axles of the same bogie can rotate relative to each other, reducing friction with the rail surface and thus reducing wear. Furthermore, the optimized bogie structure makes the bogie structure simpler, improves the maintainability of the bogie, and reduces the manufacturing cost and maintenance cost during use.

[0017] This bogie features an integrated wheelset axle box structure with a 2.3m wheelbase. This wheelbase improves the vehicle's high-speed stability and allows for the installation of more equipment, meeting increasing functional requirements. The integrated axle box structure enables the bogie to adapt to rotational changes, enhancing its ability to navigate tight curves. The bogie has a split structure, consisting of an outer and inner bolster, connected by pins and bearings. This structure enables adaptive steering of the axles. Shock absorbers are installed between the two sides of the bogie to attenuate vibrations and optimize the bearing's operating environment. The wheelsets use conventional wheels, and the primary suspension uses ring suspension. The rubber springs effectively absorb high-frequency vibrations and impacts between the wheels and rails, improving vehicle stability and component reliability. The secondary suspension system includes air springs, inter-frame shock absorbers, and height adjustment devices. The air springs are installed on the transition beam above the bogie, with two air springs ensuring sufficient span, eliminating the need for anti-roll torsion bar devices on the bogie and reducing bogie manufacturing costs. The height adjustment device is installed between the frame reinforcement beam and the car body, using two-point control to effectively control the height of the vehicle floor. The braking units are respectively hung on the reinforcement beams of the two side frames, and the brake discs are installed on the axles, using axle disc braking.

Claims

1. A self-steering non-powered metro bogie, characterized in that: The application relates to a bogie device (1), a brake device (2), a frame (3), an air spring (4), a wheel set (5), a height adjusting device (6), a connecting pin shaft (7), a frame inter-damping device (8) and an overpass beam (9), wherein the bogie device (1) adopts a wheel set bogie built-in structure and an annular rubber spring; unit brake cylinders in the brake device (2) are respectively hung on the reinforced beams of the two side frames (3); brake discs are installed on the axles; the frame (3) adopts a split structure and is divided into a pillow outer side and a pillow inner side; the pillow outer side and the pillow inner side are connected with bearings on the frame (3) through the connecting pin shaft (7); the frame inter-damping device (8) is installed between the two side frames (3); the air spring (4) is installed on the overpass beam (9); the height adjusting device (6) is installed between the reinforced beam of the frame (3) and a vehicle body; the connecting pin shaft (7) connects the two side frames (3) and the overpass beam (9); the frame inter-damping device (8) is installed between the two side frames (3) and is symmetrically arranged; and the overpass beam (9) connects the frame (3) and a secondary suspension.

2. The self-steering non-powered metro bogie of claim 1, wherein: The overpass beam (9) has a structure of an air spring (4) additional air chamber function.

3. The self-steering non-powered metro bogie of claim 1, wherein: The frame adopts an X-shaped structure.

4. The self-steering non-powered metro truck of claim 1, wherein: The brake device (2) adopts an axle disc brake.

5. The self-steering non-powered metro truck of claim 1, wherein: The height adjusting device (6) adopts a height adjusting valve and adopts two-point control.

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