Anti-creeping energy-absorbing device for rail transit vehicle

Abstract

The utility model relates to an anti-creeping energy-absorbing device for a rail transit vehicle. The anti-creeping energy-absorbing device solves the problem of overlarge vertical force caused by direct matching of different vehicle types and different anti-creepers in the actual application process. Comprising anti-creeping teeth and an expansion pipe, the expansion pipe is a reducer pipe, the large end of the expansion pipe is welded with the anti-creeping teeth, and the ratio of the longitudinal height of the anti-creeping teeth to the diameter of the small end of the expansion pipe is (1.9-2.1): 1. The inclined surface transition from the large end to the small end of the expansion pipe is 45 degrees. And the diameter ratio of the large end to the small end of the expansion tube is (1.2-1.4): 1. 45-degree grooves are formed in the anti-creeping teeth, the anti-creeping teeth and the expansion pipe are subjected to surfacing welding, and a weld joint is in The overall stability and reliability of the device are guaranteed, the anti-creeping energy absorption device has universality, the stability of energy absorption is guaranteed, and the design cost and the manufacturing cost are reduced.

Description

Technical Field

[0001] This utility model relates to an anti-climbing energy-absorbing device for rail transit vehicles, belonging to the field of rail transit. Background Technology

[0002] When anti-climb devices of the same vehicle type collide unexpectedly, the maximum height difference does not exceed 40mm. The anti-climb energy-absorbing devices can stably engage and interact with each other to absorb energy. Traditional anti-climb energy-absorbing devices have limitations. Vehicles of the same model and running on the same track must be equipped with the same type of anti-climb device to ensure the engagement of the same anti-climb teeth. However, when different models or mixed-track vehicles run on the same line, there is a risk of mismatch between the engagement of different anti-climb teeth. Specifically, the structure is limited by the pipe diameter, and the anti-climb teeth cannot withstand large vertical forces, which may lead to breakage and failure. Traditional anti-climb devices use carbon structural steel with a yield strength of 345MPa, which is very prone to breakage and failure. Utility Model Content

[0003] This utility model provides an anti-climbing energy-absorbing device for rail transit vehicles, which solves the problem of excessive vertical force caused by the direct combination of different vehicle models and different anti-climbing devices in actual use.

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

[0005] An anti-climb energy absorption device for rail transit vehicles includes anti-climb teeth and an expansion tube. The expansion tube is a variable diameter tube, with its large end welded to the anti-climb teeth. The ratio of the longitudinal height of the anti-climb teeth to the diameter of the small end of the expansion tube is 1.9 to 2.1:1.

[0006] The expansion tube transitions from the large end to the small end with a sloping surface at an angle of 45°.

[0007] The diameter ratio of the large end to the small end of the expansion tube is 1.2 to 1.4:1.

[0008] The anti-climbing tooth has a 45° bevel and is welded to the expansion tube, and the weld seam transitions at a 45° after the weld is built up.

[0009] This invention ensures the overall stability and reliability of the device, makes the anti-climb energy absorption device versatile, and reduces design and manufacturing costs. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the present invention;

[0011] Figure 2 yes Figure 1 The left view. Detailed Implementation

[0012] like Figure 1 , 2The present invention increases the height of the anti-climb tooth 1 to be compatible with anti-climb devices of different heights, and changes the diameter of the expansion tube that plays an energy-absorbing role to prevent the anti-climb tooth from breaking and failing under vertical force. The large end 3 of the expansion tube is welded to the anti-climb tooth 1, and the ratio of the longitudinal height of the anti-climb tooth 1 to the diameter of the small end 4 of the expansion tube is 1.9 to 2.1:1 (the prior art is 1.6:1). The large end 3 to the small end 4 of the expansion tube transitions at an inclined angle of 45°, and the ratio of the diameter of the large end 3 to the small end 4 of the expansion tube is 1.2 to 1.4:1.

[0013] The anti-climb tooth 1 has a 45° bevel and is welded to the expansion tube. After the weld is built up, weld 2 has a 45° transition. The 45° transition of the weld provides a large support area for both the anti-climb tooth and the expansion tube, which acts as an energy absorber, ensuring the overall strength of the anti-climb tooth. Through simulation analysis, the maximum stress between the anti-climb tooth and the expansion tube is 326MPa, which does not exceed the material's yield strength. By improving the height of the anti-climb tooth, it is compatible with the interface engagement of different types of anti-climb energy absorbers, making the anti-climb energy absorber device versatile.

[0014] This utility model uses carbon steel pipes to transition between different diameters for the expansion tube, keeping the overall compression space unchanged. The increased diameter section ensures the overall strength of the anti-climb teeth. Compared with the prior art, the increased anti-climb tooth surface used in this utility model ensures compatibility with the meshing height of different vehicle models. At the same time, the expansion tube with a variable diameter is used as a support to ensure the overall stability and reliability of the device, making the anti-climb energy absorption device universal and reducing design and manufacturing costs.

Claims

1. An anti-climb energy-absorbing device for rail transit vehicles, comprising anti-climb teeth and an expansion tube, characterized in that: The expansion tube is a reducing tube, with the large end welded to the anti-creep tooth. The ratio of the longitudinal height of the anti-creep tooth to the diameter of the small end of the expansion tube is 1.9 to 2.1:

1.

2. The anti-climbing energy-absorbing device for rail transit vehicles according to claim 1, characterized in that: The expansion tube transitions from the large end to the small end with a sloping surface at an angle of 45°.

3. The anti-climbing energy-absorbing device for rail transit vehicles according to claim 1, characterized in that: The diameter ratio of the large end to the small end of the expansion tube is 1.2 to 1.4:

1.

4. The anti-climbing energy-absorbing device for rail transit vehicles according to claim 1, characterized in that: The anti-climbing tooth has a 45° bevel and is welded to the expansion tube, and the weld seam transitions at a 45° after the weld is built up.

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