Primary suspension height adjusting device for rail transit vehicle

Abstract

The utility model discloses a rail transit vehicle primary suspension height adjusting device which comprises a supporting rod arranged between an axle box body and a framework spring barrel and a locking screw rod installed on an axle box spring lower clamping plate, the locking screw rod is sleeved with a hydraulic cylinder, the hydraulic cylinder is connected with a hydraulic pump, and the hydraulic pump is connected with the supporting rod. The hydraulic cylinder is pressurized by the hydraulic pump to lift up the locking screw rod, so that the axle box spring is compressed, and a gap is formed between the axle box spring and the axle box body; and the height of the primary suspension of the vehicle can be adjusted by increasing and decreasing the adjusting pad in the gap. The device is simple in structure and convenient to operate, the primary suspension height of the rail transit vehicle can be efficiently adjusted, and a large amount of resources and labor cost are saved.

Description

Technical Field

[0001] This utility model belongs to the field of rail transit technology, and specifically relates to a primary suspension height adjustment device for rail transit vehicles. Background Technology

[0002] During the manufacturing and advanced maintenance of railway vehicles, after the vehicle is completed, in order to ensure a balanced wheel weight distribution and reduce the risk of derailment, the vehicle needs to be weighed at 8 points. During the weighing process, the height of the primary suspension needs to be adjusted to ensure that the weight difference between each wheel meets the standard requirements.

[0003] Reference Figure 1 As shown, after the vehicle is completed, the bogie 6 supports the car body 5. The gap between the frame spring cylinder 10 and the axle box 9 is the primary suspension height of the vehicle. The primary suspension height values ​​at various points on the vehicle directly affect the weight distribution of the eight wheels. This height can be adjusted by adding or subtracting adjusting shims 8. However, because the gap between the upper plane of the bogie 3 frame and the lower plane of the bolster beam of the car body 5 is only 120mm, the operating space is narrow, making direct operation between the bogie 6 and the car body 5 inconvenient. Therefore, when adding or subtracting adjusting shims 8, it is mostly done by lifting the frame 11. Lifting the frame 11 requires simultaneously bearing the weight of the car body 5, resulting in complex tooling, high operational difficulty, low efficiency, and certain safety risks during the operation. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a convenient-to-operate primary suspension height adjustment device for rail transit vehicles.

[0005] A first aspect of this utility model provides a primary suspension height adjustment device for a rail transit vehicle, comprising a support rod disposed between the axle box body and the frame spring cylinder, a locking screw mounted on the lower clamping plate of the axle box spring, and a hydraulic cylinder mounted on the locking screw, the hydraulic cylinder being connected to a hydraulic pump.

[0006] According to some embodiments of this utility model, the support rod is an adjustable-length threaded rod.

[0007] According to some embodiments of the present invention, the support rod includes a support bolt, and an adjusting nut is threadedly connected to the top of the support bolt.

[0008] According to some embodiments of the present invention, the end of the adjusting nut extends with a limiting boss.

[0009] According to some embodiments of the present invention, the locking screw is installed in the threaded hole of the lower clamping plate of the axle box spring via a threaded connection.

[0010] According to some embodiments of the present invention, the top of the locking screw is provided with a cuboid bolt head.

[0011] According to some embodiments of the present invention, the hydraulic cylinder has an overall C-shaped shape.

[0012] According to some embodiments of the present invention, the lower part of the hydraulic cylinder is provided with a support platform for supporting the bolt head.

[0013] According to some embodiments of this utility model, the hydraulic cylinder and the hydraulic pump are connected by a pipeline.

[0014] This invention has at least the following beneficial effects: The device includes a support rod disposed between the axle box body and the frame spring cylinder, and a locking screw mounted on the lower clamping plate of the axle box spring. A hydraulic cylinder is mounted on the locking screw, and the hydraulic cylinder is connected to a hydraulic pump. The hydraulic pump pressurizes the hydraulic cylinder to lift the locking screw, thereby compressing the axle box spring and creating a gap between it and the axle box body. By adding or subtracting shims within this gap, the height of the vehicle's primary suspension can be adjusted. This device has a simple structure, is easy to operate, and can achieve efficient adjustment of the primary suspension height of rail transit vehicles, saving significant resources and labor costs.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a diagram showing the current installation status of the primary suspension system in rail transit vehicles.

[0018] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0019] Figure 3 This is a structural disassembly diagram of the locking screw and hydraulic cylinder of this utility model;

[0020] Figure 4 This is a schematic diagram of the support rod structure of this utility model. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are 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, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0024] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0025] Reference Figure 2 A primary suspension height adjustment device for rail transit vehicles includes a support rod 4 disposed between an axle box body 9 and a frame spring cylinder 10, a locking screw 3 mounted on the lower clamping plate of the axle box spring, a hydraulic cylinder 2 mounted on the locking screw 3, the hydraulic cylinder 2 being connected to a hydraulic pump 1, the hydraulic pump 1 pressurizing the hydraulic cylinder 2 to lift the locking screw 3 upward, thereby compressing the axle box spring 7 and creating a gap between it and the axle box body 9.

[0026] Reference Figure 4 The support rod 4 is an adjustable threaded rod, which allows for easy adjustment of the height between the axle box 9 and the frame spring cylinder 10. The support rod 4 includes a support bolt 41, and an adjusting nut 42 is threadedly connected to the top of the support bolt 41. Rotating the adjusting nut 42 can adjust the length of the support rod 4. In addition, the end of the adjusting nut 42 extends a limiting boss 421, which effectively prevents the adjusting nut 42 from falling off during the compression process of the support rod 4.

[0027] Reference Figure 3 The locking screw 3 is threadedly connected to a threaded hole in the lower clamping plate of the axle box spring. A rectangular bolt head 31 is located at the top of the locking screw 3. The hydraulic cylinder 2 is C-shaped. A support platform 21 supporting the bolt head 31 is located at the bottom of the hydraulic cylinder 2. When the hydraulic cylinder 2 is mounted on the locking screw 3, the C-shaped hydraulic cylinder 2 is inserted along the narrow side of the head of the locking screw 3, and then rotated 90° to support the long side of the locking screw 3. To extend the operating distance, the hydraulic cylinder 2 is connected to the hydraulic pump 1 via a pipe.

[0028] An adjustment method using a primary suspension height adjustment device for rail transit vehicles, the method comprising the following steps:

[0029] 1): First, support rod 4 is placed between axle box 9 and frame spring cylinder 10 to support frame 11;

[0030] 2): Install the locking screw 3 onto the lower clamping plate of the axle box spring;

[0031] 3): A hydraulic cylinder 2 is fitted around the locking screw 3. The hydraulic pump 1 pressurizes the hydraulic cylinder 2 to lift the locking screw 3, thereby compressing the axle box spring 7 and creating a gap between it and the axle box body 9.

[0032] 4): Adjusting the height of the vehicle's primary suspension can be achieved by adding or subtracting the shim 8 within this gap.

[0033] This device has a simple structure and is easy to operate. It can achieve efficient adjustment of the primary suspension height of rail transit vehicles, saving a lot of resources and labor costs.

[0034] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A primary suspension height adjustment device for rail transit vehicles, characterized in that: It includes a support rod (4) set between the axle box body (9) and the frame spring cylinder (10), a locking screw (3) installed on the lower clamping plate of the axle box spring, a hydraulic cylinder (2) mounted on the locking screw (3), the hydraulic cylinder (2) being connected to a hydraulic pump (1), the hydraulic pump (1) pressurizes the hydraulic cylinder (2) to lift the locking screw (3), thereby compressing the axle box spring (7) and creating a gap between it and the axle box body (9).

2. The primary suspension height adjustment device for rail transit vehicles according to claim 1, characterized in that: The support rod (4) is an adjustable threaded rod.

3. The primary suspension height adjustment device for rail transit vehicles according to claim 2, characterized in that: The support rod (4) includes a support bolt (41), and an adjusting nut (42) is threadedly connected to the top of the support bolt (41).

4. The primary suspension height adjustment device for rail transit vehicles according to claim 3, characterized in that: The adjusting nut (42) has a limiting boss (421) extending from its end.

5. The primary suspension height adjustment device for rail transit vehicles according to claim 1, characterized in that: The locking screw (3) is installed in the threaded hole on the lower clamping plate of the axle box spring by a threaded connection.

6. The primary suspension height adjustment device for rail transit vehicles according to claim 5, characterized in that: The top of the locking screw (3) is provided with a rectangular bolt head (31).

7. The primary suspension height adjustment device for rail transit vehicles according to claim 6, characterized in that: The hydraulic cylinder (2) has an overall C-shaped shape.

8. The primary suspension height adjustment device for rail transit vehicles according to claim 7, characterized in that: The lower part of the hydraulic cylinder (2) is provided with a support platform (21) for supporting the bolt head (31).

9. The primary suspension height adjustment device for rail transit vehicles according to claim 1, characterized in that: The hydraulic cylinder (2) and the hydraulic pump (1) are connected by a pipeline.

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