Rail transit vehicle primary suspension height adjusting device and adjusting method thereof

Abstract

The invention 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] The invention belongs to the technical field of rail transit, and particularly relates to a primary suspension height adjustment device for rail transit vehicles and an adjustment method thereof. Background Art

[0002] During the new construction and advanced maintenance of railway vehicles, after the vehicle is completed, in order to ensure the balanced distribution of wheel weights of the vehicle and reduce the risk of vehicle derailment, the vehicle needs to be weighed at 8 points. During the weighing process, the primary suspension height needs to be adjusted to make the difference between the wheel weights meet the standard requirements.

[0003] Refer to Figure 1 As shown, after the vehicle is completed, the bogie 6 bears and supports the carriage 5. The gap between the frame spring cylinder 10 and the axle box body 9 is the primary suspension height of the vehicle. The primary suspension height values at various parts of the vehicle directly affect the distribution of the 8 wheel weights of the vehicle, and its height value can be adjusted by adding or subtracting the adjusting pad 8. However, since the gap between the upper plane of the frame of the bogie 3 and the lower plane of the bolster of the carriage 5 is only 120 mm, the operation space is narrow, and it is not convenient to directly operate between the bogie 6 and the carriage 5. Therefore, when performing the operation of adding or subtracting the adjusting pad 8, it is mostly carried out by lifting the frame 11. When lifting the frame 11, it is necessary to bear the gravity of the carriage 5 synchronously. The tooling is complex, the operation difficulty is large, the efficiency is low, and there are certain safety operation risks during the operation process. Summary of the Invention

[0004] The invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the invention provides a primary suspension height adjustment device for rail transit vehicles with convenient operation and an adjustment method thereof.

[0005] A primary suspension height adjustment device for a rail transit vehicle according to an embodiment of the first aspect of the invention includes a support rod disposed between the axle box body and the frame spring cylinder, a locking screw installed on the lower clamping plate of the axle box spring, a hydraulic cylinder sleeved on the locking screw, and the hydraulic cylinder is connected to a hydraulic pump.

[0006] According to some embodiments of the invention, the support rod is a threaded rod with adjustable length.

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

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

[0009] According to some embodiments of the invention, the locking screw is threadedly connected and installed in a threaded hole on the lower clamping plate of the axle box spring.

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

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

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

[0013] According to some embodiments of the present invention, the hydraulic cylinder is connected to the hydraulic pump through a pipeline.

[0014] An adjustment method using a primary suspension height adjustment device for rail transit vehicles, the method comprising the following steps:

[0015] 1): First, support the support rod between the axle box body and the frame spring cylinder to form a support for the frame 11;

[0016] 2): Install the locking screw on the lower clamping plate of the axle box spring;

[0017] 3): A hydraulic cylinder is sleeved on the locking screw, and the hydraulic pump is used to pressurize the hydraulic cylinder to lift the locking screw upward, thereby compressing the axle box spring and generating a gap between the axle box body;

[0018] 4): Add or subtract the adjustment pads in this gap to adjust the height of the primary suspension of the vehicle.

[0019] The present invention has at least the following beneficial effects: The device includes a support rod arranged between the axle box body and the frame spring cylinder, a locking screw installed on the lower clamping plate of the axle box spring, a hydraulic cylinder sleeved on the locking screw, and the hydraulic cylinder is connected to the hydraulic pump. The hydraulic pump is used to pressurize the hydraulic cylinder to lift the locking screw upward, thereby compressing the axle box spring and generating a gap between the axle box body; adding or subtracting the adjustment pads in this gap can adjust the height of the primary suspension of the vehicle. The device has a simple structure and convenient operation, can achieve efficient adjustment of the primary suspension height of rail transit vehicles, and saves a large amount of resources and labor costs.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present invention in conjunction with the drawings and embodiments, where:

[0022] Figure 1 is the installation state diagram of the primary suspension of the current rail transit vehicle;

[0023] Figure 2 is the schematic diagram of the use state of the present invention;

[0024] Figure 3 Schematic diagram of the structural disassembly of the locking screw and hydraulic cylinder of the present invention;

[0025] Figure 4 Schematic diagram of the support rod structure of the present invention. Specific embodiments

[0026] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that with respect to the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0028] In the description of the present invention, "a plurality of" means more than two. If there is a description of the first and the second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0030] Referring to Figure 2 , a primary suspension height adjustment device for a rail transit vehicle, which includes a support rod 4 arranged between an axle box body 9 and a frame spring cylinder 10, a locking screw 3 installed on a lower clamping plate of an axle box spring, a hydraulic cylinder 2 sleeved on the locking screw 3, and the hydraulic cylinder 2 is connected to a hydraulic pump 1.

[0031] Referring to Figure 4 , the support rod 4 is a threaded rod with adjustable length, so as to conveniently adjust the height between the axle box body 9 and the frame spring cylinder 10. The support rod 4 includes a support bolt 41, the top of the support bolt 41 is threadedly connected with an adjusting nut 42, and the length of the support rod 4 can be adjusted by rotating the adjusting nut 42. In addition, a limiting boss 421 extends from the end of the adjusting nut 42, and this design effectively prevents the adjusting nut 42 from falling off during the compression process of the support rod 4.

[0032] Referring toFigure 3 , the locking screw 3 is installed in the threaded hole on the lower splint of the axle box spring through threaded connection. A cuboid bolt head 31 is provided at the top of the locking screw 3. The overall shape of the hydraulic cylinder 2 is C-shaped. A supporting platform 21 for supporting the bolt head 31 is provided at the lower part of the hydraulic cylinder 2. When the hydraulic cylinder 2 is sleeved on the locking screw 3, the C-shaped hydraulic cylinder 2 is translated into the narrow side of the head of the locking screw 3, and the C-shaped hydraulic cylinder 2 is rotated 90° to form a support for the long side of the locking screw 3. In order to extend the operation distance, the hydraulic cylinder 2 is connected to the hydraulic pump 1 through a pipeline.

[0033] An adjustment method using a primary suspension height adjustment device for rail transit vehicles, the method comprising the following steps:

[0034] 1): First, support the support rod 4 between the axle box body 9 and the frame spring cylinder 10 to form a support for the frame 11;

[0035] 2): Install the locking screw 3 on the lower splint of the axle box spring;

[0036] 3): A hydraulic cylinder 2 is sleeved on the locking screw 3, and the hydraulic pump 1 is used to pressurize the hydraulic cylinder 2 to lift the locking screw 3 upward, thereby compressing the axle box spring 7 and generating a gap with the axle box body 9;

[0037] 4): Add or subtract the adjustment pad 8 in this gap to adjust the height of the primary suspension of the vehicle.

[0038] The structure of this device is simple and the operation is convenient. It can realize the efficient adjustment of the primary suspension height of rail transit vehicles, saving a large amount of resources and labor costs.

[0039] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A primary suspension height adjustment device for rail transit vehicles, characterized in that: It includes a support rod (4) arranged between an axle box body (9) and a frame spring cylinder (10), and a locking screw (3) installed on a lower clamping plate of an axle box spring. A hydraulic cylinder (2) is sleeved on the locking screw (3), and the hydraulic cylinder (2) is connected to a hydraulic pump (1).

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

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

4. The primary suspension height adjustment device for a rail transit vehicle according to claim 3, characterized in that: A limiting boss (421) extends from the end of the adjusting nut (42).

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

6. The primary suspension height adjustment device for a rail transit vehicle according to claim 5, wherein: A cuboid bolt head (31) is arranged at the top of the locking screw (3).

7. The primary suspension height adjustment device for a rail transit vehicle according to claim 6, characterized in that: The overall shape of the hydraulic cylinder (2) is C-shaped.

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

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

10. An adjustment method for a primary suspension height adjustment device of a rail transit vehicle adopting any one of claims 1 to 9, characterized in that: The method includes the following steps: 1): First, support the support rod (4) between the axle box body (9) and the frame spring cylinder (10) to form a support for the frame (11); 2): Install the locking screw (3) on the lower clamping plate of the axle box spring; 3): Sleeve the hydraulic cylinder (2) on the locking screw (3), and pressurize the hydraulic cylinder (2) through the hydraulic pump (1) to lift the locking screw (3) upward, so as to compress the axle box spring (7) and generate a gap between the axle box spring and the axle box body (9); 4): Add or subtract an adjusting pad (8) in this gap to adjust the height of the primary suspension of the vehicle.

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