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Sleeper beam welded gas pipe repair technology

An air pipe and bolster technology is applied in the field of repairing the welded air pipe at the bolster of the PW-220 bogie of a railway passenger car, and can solve the problems of long maintenance cycle, difficulty in controlling the flatness of the air spring mounting seats on both sides of the bolster, and complicated procedures. , to achieve the effect of fast repair speed, low repair cost and simple repair process

Inactive Publication Date: 2017-01-04
CRRC NANJING PUZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of maintenance cycle, when replacing, the air spring mounting seat should be disassembled and put on the ground as a whole, and then assembled and welded after making a new product. The process is complicated, and it takes about one week from material preparation to completion, and the maintenance cycle is longer
Moreover, it is difficult to control the flatness of the air spring mounting seats on both sides of the bolster during the overall replacement

Method used

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  • Sleeper beam welded gas pipe repair technology
  • Sleeper beam welded gas pipe repair technology

Examples

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Embodiment Construction

[0032] Such as figure 1 As shown, it is the repair process of bolster beam welding air pipe, which has two rod bodies 2 connected together by adjusting screw rod 1, and a J-shaped clamping device 3 arranged at the outer end of the rod body 2. In the slot, a screw hole is provided on the groove wall at the outer end of the slot, and a clamping screw 4 is screwed into the screw hole. The axis of the clamping screw 4 is collinear with the axis of the rod body 2 . In this embodiment, the adjusting screw 1 is a double-ended screw with opposite threads on both sides. The inner ends of the two rods 2 have threaded structures, and the adjusting screw 1 engages with the threaded structures of the rods 2. Rotating the adjusting screw can realize synchronous support or tensioning of the rods. .

[0033] Such as figure 2 As shown, it is a schematic diagram of the use state of the support beam of the present invention. When the side beam 5 of the frame 6 needs to be repaired, the devi...

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Abstract

The invention relates to a sleeper beam welded gas pipe repair technology. The sleeper beam welded gas pipe repair technology comprises the steps that a gas base composition pressure maintaining test is conducted at first, if a gas pipe is qualified, repairing does not need to be carried out, and if the gas pipe is not qualified, Dg20 gas pipe crack judgment is conducted; if it is judged that a crack can be subjected to welding repairing, the Dg20 gas pipe is subjected to welding repairing, if it is judged that the crack cannot be subjected to welding repairing, an original pipeline is cut off along the inner side of a leakage point position of the Dg20 gas pipe, and an opening of the Dg20 gas pipe is blocked; and a t-branch pipe is additionally arranged on a gas base Dg50 gas pipe, a Dg20 gas pipe is additionally arranged nearby a gas base pipeline and is connected with the t-branch pipe, an original air supply pipeline is adjusted to supply air to the new Dg20 pipeline instead of supplying air to the original Dg20 pipeline. By means of the sleeper beam welded gas pipe repair technology, a sleeper beam welded gas pipe can be repaired, the repair process is simple and easy to operate, the repair speed is high, and the repair cost is low; and a sleeper beam does not need to be disassembled in the repair process, and the flatness of air spring installation bases on the two sides is not influenced.

Description

technical field [0001] The invention relates to a bolster welded gas pipe repair process, which is especially suitable for repairing the welded gas pipe at the bolster of a railway passenger car PW-220 (K) type bogie. Background technique [0002] Such as figure 1 As shown, taking a vehicle equipped with a PW-220(K) bogie as an example, the air spring air inlet is located under the corbel, integrally formed with the air spring mounting seat, and welded to the lower cover of the car body corbel 1 Above, the air pipe on the air seat 2 is welded to the corbel web section. In the process of operation and maintenance, cracks and air leakage are very likely to appear at the welding place between the Dg20 air pipe 3 and the corbel web, which affects the stability of the vehicle operation. figure 1 Among them, 4 is Dg50 trachea. [0003] After the tracheal crack, it is difficult to deal with due to its structural limitation. If it is replaced as a whole, in terms of maintenance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/00
CPCB23K9/0052
Inventor 曾力荣陈燕朱国祥谢紫华
Owner CRRC NANJING PUZHEN CO LTD
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