CN103769743A - Coupler knuckle S surface near-net repairing method and welding clamp used in method - Google Patents

Abstract

The invention discloses a coupler knuckle S surface near-net repairing method and a welding clamp used in the method and relates to a coupler knuckle S surface repairing method and a welding clamp used for fixing a coupler knuckle. According to the method, the part, unevenly abraded, on the S surface of the coupler knuckle to be repaired is cut into a plane, then the coupler knuckle to be repaired is accurately positioned and clamped with the welding clamp, and then the coupler knuckle S surface is repaired with an electroslag welding method; existing repairing processes are simplified, machining difficulty is reduced, and the forming accuracy of the coupler knuckle S surface is guaranteed.

Description

The nearly clean method for repairing and mending of a kind of hook tongue S face and weld jig used thereof

Technical field

The present invention relates to a kind of method for repairing and mending of coupler knuckle for car coupler S face and the weld jig for hook tongue is fixed, be specially the nearly clean method for repairing and mending of a kind of hook tongue S face and weld jig used thereof.

Background technology

Coupler knuckle for car coupler is the crucial buffer unit that connects railway locomotive envelope, is used for realizing connection and transmitting tractive power between compartment, and makes to maintain a certain distance between compartment.In high-speed overload railway transportation, hitch bears at random, the effect of pressure, impulsive force and the moment of flexure of alternation, and hook tongue S face produces heavy wear, crackle, when serious, causes compartment unhook accident, and repair rate is high, so will reprocess in time after the wearing and tearing of hook tongue.Conventionally the hook tongue restorative procedure that rolling stock section is used is built-up welding layer of metal on S curved surface, then returns to the original size before abrasion by machined.Conventional concrete method for repairing and mending has following several:

First method is to use many hooks tongue automatic submerged-arc bead welding, and every weldering need to be adjusted hook tongue one and rotate once, and heap postwelding wants gas cutting hook tongue to separate, and then employing is machined to the front original size of abrasion with numerical control mill or the planing of profile modeling function.Second method is to adopt CO ₂, the automatic surfacing of MAG gas shielded arc welding mode, can carry out full-automatic build-up welding to single hook tongue medial surface, and then employing is machined to the front original size of abrasion with numerical control mill or the planing of profile modeling function.

But hook tongue lateral surface is due to the degree difference of abrasion, caused positioning reference plane be difficult to determine, and above two kinds of methods also need to carry out size and the precision that machining guarantees that hook tongue is final after hook tongue is completed to repair welding, in the time of machining, need the frequent hook tongue angle of adjusting, inefficiency, to machining required precision, the size and dimension before wearing and tearing can not be recovered in high and repair welding position after processing.In addition develop in addition profiling automatic resurfacing welding machine, determine hook tongue S face accurate location by special fixture, use CO ₂automatically original shape size is arrived in hook tongue to be repaired soldering by protection soldering method, machined again, but the whole S face of hook tongue wear intensity difference causes welding parameter frequently to adjust, and high to the control system requirement of built-up welder, promote at present difficulty larger.

Summary of the invention

Object of the present invention is exactly in order to overcome deficiency of the prior art, and the nearly clean method for repairing and mending of a kind of hook tongue S face and weld jig used thereof are provided, the formed precision that it can be simplified existing repair technology process, reduce difficulty of processing and guarantee hook tongue S face.

To achieve these goals, technical scheme of the present invention is: the nearly clean weld jig of repairing use of a kind of hook tongue S face, comprise stand and be arranged on stand side, and brace table moving up and down, brace table is provided with pattern that can be mobile in the horizontal direction, the shape of described pattern front end face is consistent with the S face shape of intact hook tongue, pattern inside is provided with cooling-water duct, on the end face of described stand, be provided with the locating ring for Primary Location hook tongue, for limiting the liftable alignment pin of hook tongue horizontal anomalous movement, for limit hook tongue rotate backstay and for fixing to clamp the clamp of hook tongue, the pin-and-hole arranging on described liftable alignment pin and hook tongue matches, backstay and clamp are arranged on the side of hook tongue to be repaired, and clamp is connected with driving its driving mechanism moving in the horizontal direction.

Adopt above-mentioned weld jig to carry out the nearly clean method of repairing of electroslag welding to hook tongue S face and comprise following several step:

(1), first cut into a plane by wearing away uneven part on the S face of hook tongue to be repaired;

(2), the hook tongue cutting is placed on the locating ring of weld jig, and liftable alignment pin is inserted in the pin-and-hole on hook tongue, moves in the horizontal direction to limit hook tongue; Around liftable alignment pin swivel hook tongue, the side of hook tongue is withstood on backstay afterwards, thereby complete the location to hook tongue;

(3), after hook tongue located, move horizontally pattern, the consistent end face of S face shape its front end setting and intact hook tongue is attached on the S face of hook tongue, Level Promoting clamp afterwards, makes on its side that withstands on hook tongue, to complete the clamping to hook tongue;

(4), place run-on tab in hook tongue bottom, and in the cavity surrounding at pattern, run-on tab and hook tongue S face, put into solder flux and welding wire carries out electroslag welding.

Beneficial effect: the present invention first cuts into a plane by the part of the abrasion inequality of hook tongue S face to be repaired, adopt again the method for electroslag welding built-up welding to weld nearly clean repairing of realization, traditional repair technology scheme is simplified, and guarantees hook tongue S face formed precision.First cutting again welding makes before repair by welding the machining precision to hook tongue and requires not high to equipment and workman, and in welding process, do not need welding parameters frequently to adjust, only need before welding, adjust welding parameter according to the gap length of the hook tongue after processing and fixture formation.Apply weld jig of the present invention hook tongue is fixed, it is fixed and installation adjustment is more convenient, because pattern used is according to intact hook tongue S Machining of Curved Surface, can guarantees that the soldering of hook tongue S face is to original shape size, thereby not need to process again.

Accompanying drawing explanation

Fig. 1 is the plan structure schematic diagram of fixture of the present invention.

Fig. 2 is the main TV structure schematic diagram of fixture of the present invention.

In figure, be labeled as: 1, stand, 2, brace table, 3, pattern, 4, locating ring, 5, liftable alignment pin, 6, backstay, 7, clamp, 8, hook tongue, 9, slide unit, 10, guide rail, 11, motor, 12, run-on tab.

The specific embodiment

As depicted in figs. 1 and 2, the nearly clean weld jig of repairing use of a kind of hook tongue S face, comprise stand 1 and be arranged on stand 1 side, and brace table 2 moving up and down, brace table 2 is provided with pattern 3 that can be mobile in the horizontal direction, the shape of described pattern 3 front end faces is consistent with the S face shape of intact hook tongue 8, pattern 3 inside are provided with cooling-water duct, on the end face of described stand 1, be provided with the locating ring 4 for Primary Location hook tongue 8, for limiting the liftable alignment pin 5 of hook tongue 8 horizontal anomalous movements, for limiting backstay 6 that hook tongue 8 rotates and for fixing to clamp the clamp 7 of hook tongue 8, the pin-and-hole arranging on described liftable alignment pin 5 and hook tongue 8 matches, backstay 6 and clamp 7 are arranged on the side of hook tongue 8 to be repaired, and clamp 7 is connected with driving its driving mechanism moving in the horizontal direction.

Described liftable alignment pin 5 can be relatively and the end face of stand 1 move up and down the pin-and-hole of hook tongue positioned.

Described brace table 2 can adopt an angle bar platform, and the slide unit 9 that angle bar platform arranges above by it coordinates slip with the guide rail 10 on stand 1 side, and wherein slide unit 9 is driven by motor 11, thereby can drive the pattern 3 on angle bar platform and angle bar platform to slide up and down.In electroslag welding process, pattern 3 moves up, and the inner logical cooling water of pattern 3 is there will not be and cohere in assurance welding process, and the effect that constraint is shaped is played in pattern 3 liquid towards molten baths simultaneously, guarantees that the hook tongue after soldering is S-shaped, and wherein pattern 3 adopts copper material.

Adopt above-mentioned weld jig to carry out the nearly clean method of repairing of electroslag welding to hook tongue S face and comprise following several step:

(1), first cut into a plane by wearing away uneven part on the S face of hook tongue to be repaired;

(2), the hook tongue cutting is placed on the locating ring of weld jig, and liftable alignment pin is inserted in the pin-and-hole on hook tongue, moves in the horizontal direction to limit hook tongue; Around liftable alignment pin swivel hook tongue, the side of hook tongue is withstood on backstay afterwards, thereby complete the location to hook tongue;

(3), after hook tongue located, move horizontally pattern, the consistent end face of S face shape its front end setting and intact hook tongue is attached on the S face of hook tongue, Level Promoting clamp afterwards, makes on its side that withstands on hook tongue, to complete the clamping to hook tongue;

(4), place run-on tab in hook tongue bottom, and in the cavity surrounding at pattern, run-on tab and hook tongue S face, put into solder flux and welding wire carries out electroslag welding.

Before electroslag welding, adjust gage of wire and feed rate according to gap length between hook tongue and pattern, less demanding to workman's technical merit.

Claims (2)

1. the nearly clean weld jig of repairing use of hook tongue S face, it is characterized in that: comprise stand (1) and be arranged on stand (1) side, and brace table moving up and down (2), brace table (2) is provided with pattern (3) that can be mobile in the horizontal direction, the shape of described pattern (3) front end face is consistent with the S face shape of intact hook tongue (8), pattern (3) inside is provided with cooling-water duct, on the end face of described stand (1), be provided with the locating ring (4) for Primary Location hook tongue (8), be used for limiting the liftable alignment pin (5) of hook tongue (8) horizontal anomalous movement, be used for limiting backstay (6) that hook tongue (8) rotates and for fixing to clamp the clamp (7) of hook tongue (8), described liftable alignment pin (5) matches with the upper pin-and-hole arranging of hook tongue (8), backstay (6) and clamp (7) are arranged on the side of hook tongue to be repaired (8), and clamp (7) is connected with driving its driving mechanism moving in the horizontal direction.

2. the nearly clean method for repairing and mending of hook tongue S face, is characterized in that: comprise following several step:

(1), first cut into a plane by wearing away uneven part on the S face of hook tongue to be repaired;

(2), the hook tongue cutting is placed on the locating ring of weld jig, and liftable alignment pin is inserted in the pin-and-hole on hook tongue, moves in the horizontal direction to limit hook tongue; Around liftable alignment pin swivel hook tongue, the side of hook tongue is withstood on backstay afterwards, thereby complete the location to hook tongue;

(3), after hook tongue located, move horizontally pattern, the consistent end face of S face shape its front end setting and intact hook tongue is attached on the S face of hook tongue, Level Promoting clamp afterwards, makes on its side that withstands on hook tongue, to complete the clamping to hook tongue;

(4), place run-on tab in hook tongue bottom, and in the cavity surrounding at pattern, run-on tab and hook tongue S face, put into solder flux and welding wire carries out electroslag welding.

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