Rapid welding maintenance method for tramcar turnout

A tram and rapid welding technology, applied in the direction of improving process efficiency, can solve problems such as inability to meet, and achieve the effects of reducing maintenance costs, improving welding maintenance efficiency, and reducing the difficulty coefficient of on-site welding construction

Active Publication Date: 2021-08-03
CHINA RAILWAY BAOJI BRIDGE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that this method also cannot meet the on-line local welding maintenance requirements of the tramway turnout after the welded joint and the local failure near the welded joint

Method used

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  • Rapid welding maintenance method for tramcar turnout
  • Rapid welding maintenance method for tramcar turnout

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0060] The main operations included in the basic steps stage are: identification and preparation of automatic pre-flash welding equipment sensing system, workpiece alignment status, etc.

[0061] The process of the flash leveling stage is mainly based on controlling the displacement. Among them, the set value of the displacement limit is related to the processing accuracy and cleanliness of the processed surface of the end to be welded. In general, the displacement limit value of the flashing stage is set to be controlled at 4mm.

[0062] The process control in the preheating stage is mainly to control the heating time and the number of preheating cycles. The setting of the heating time and the number of preheating cycles is determined according to the size and material of the welding end face. Applied to the present invention, as shown in the figure, the heating time of the transition rail 3 and the extension rail 2 is set to 5s, and the number of preheating cycles is 9 time...

Embodiment 3

[0068] The main operations included in the basic steps stage are: identification and preparation of automatic pre-flash welding equipment sensing system, workpiece alignment status, etc.

[0069] The process of the flash leveling stage is mainly based on controlling the displacement. Among them, the set value of the displacement limit is related to the processing accuracy and cleanliness of the processed surface of the end to be welded. In general, the displacement limit value of the flashing stage is set to be controlled at 4mm.

[0070] The process control in the preheating stage is mainly to control the heating time and the number of preheating cycles. The setting of the heating time and the number of preheating cycles is determined according to the size and material of the welding end face. Applied to the present invention, as shown in the figure, the heating time of the transition rail 3 and the extension rail 2 is set to 4.8s, and the number of preheating cycles is 9 ti...

Embodiment 4

[0076] The main operations included in the basic steps stage are: identification and preparation of automatic pre-flash welding equipment sensing system, workpiece alignment status, etc.

[0077] The process of the flash leveling stage is mainly based on controlling the displacement. Among them, the set value of the displacement limit is related to the processing accuracy and cleanliness of the processed surface of the end to be welded. In general, the displacement limit value of the flashing stage is set to be controlled at 5mm.

[0078] The process control in the preheating stage is mainly to control the heating time and the number of preheating cycles. The setting of the heating time and the number of preheating cycles is determined according to the size and material of the welding end face. Applied to the present invention, as shown in the figure, the heating time of the transition rail 3 and the extension rail 2 is set to 6s, and the number of preheating cycles is 10 tim...

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Abstract

The invention provides a rapid welding maintenance method for a tramcar turnout. The rapid welding maintenance method comprises the following steps of measuring the size of a fracture part, manufacturing a transition rail, performing flash welding, performing saw cutting according to the size, performing manual electric arc welding, treating a welding seam and completing maintenance. Factory welding and field welding are effectively combined, and advantages are enhanced and disadvantages are avoided; a more efficient, convenient, economical, reliable and environment-friendly construction method is adopted, and the technical problem of online maintenance and replacement of the turnout is solved; and replacement, caused by partial failures of the turnout, of the whole turnout is avoided, the maintenance cost is reduced, the service life of the turnout is relatively prolonged, and the method is economical, practical and suitable for popularization.

Description

technical field [0001] The invention belongs to the technical field of on-site repair and manufacture of railroad turnouts, and in particular relates to a rapid welding maintenance method for a railcar turnout. Background technique [0002] Turnouts for trams, such as figure 1 As shown, it usually consists of a tram fork and extension rails. Usually, once the tram fork center of the tramway switch and the welding seam of the extended rail or the area near the welding seam breaks, the switch generally needs to be dismantled as a whole for replacement. The replacement cost is quite high, which is equivalent to reducing the service life of the undamaged turnout, which brings a certain economic burden to the maintenance work. [0003] And the replacement after the overall disassembly of the turnout, according to the prior art, take a kind of tramway crossing turnout and its welding method disclosed by the publication number CN111501444A as an example, apply this method to repa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/04
CPCB23P6/04Y02P10/20
Inventor 王秀菊程亮张剑峰张新业朱小平何亮达
Owner CHINA RAILWAY BAOJI BRIDGE GRP
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