CN2092397U

CN2092397U - Flexible and adjustable corrector

Info

Publication number: CN2092397U
Application number: CN 91213781
Authority: CN
Inventors: 张新渊
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-24
Filing date: 1991-05-24
Publication date: 1992-01-08

Abstract

The utility model discloses an auxiliary welding device which is suitable for correcting misalignment degree and welding barrel bodies, longitudinal seams, and external coating reinforced parts. A closed movable ring which is composed of a chain with adjustable girth and definite width is sheathed on a barrel body to be welded. An oil hydraulic cylinder causes a push rod to pass through the space of the middle of chain links push against the selecting point of the barrel body. A pair of grapples connected with both sides of the push rod of the oil hydraulic cylinder respectively hook two chain links of both sides of the closed movable ring to startan oil pressure pump and cause the push rod to be stretched, and then a circumferential tightening force is applied on the barrel body by the closed movable ring, and a radial pressure is applied on the selecting point by the push rod.

Description

Flexible and adjustable corrector

The utility model relates to a kind of auxiliary welding equipment, is specially adapted to the welding of cylindrical shell circumferential weld.

Housing is welded by parts when change refining equipment such as manufacturing chemical industry, oil refining.Because characteristics such as welding profession single product, small quantities of, many kinds, it is that mechanization is the poorest in each operation of device fabrication, and labour intensity is very big, and it is maximum to account for man-hour, and quality is the weak link of difficult assurance.We can say, change the also mechanization apparatus for assembling of perfect without comparison usefulness that the workman likes of refining machinery industry at present.

Housing assembling mainly is meant the circumferential weld assembling of cylindrical shell and cylindrical shell, cylindrical shell and end socket, assembles much more difficultly than longitudinal joint because of circumferential weld assembles, and mainly solves the circumferential weld apparatus for assembling so housing is assembled.

According in national chemical and the mechanical industry information network of oil refining, southwest welding cold process investigation group 1978 shows changing the 50 tame makers' investigation of refining machinery, the assembly working of most of factory is still continued to use old technology, i.e. gusset, wedge by hand, with making chock, crowbar is prized or is proofreaied and correct misalignment with the way on leading screw top, carries out the assembling of circumferential weld between cylindrical shell.It is gone up crator hammer trace and can't avoid with the housing of this old technology assembling, have to shovel with pneumatic shovel, and emery wheel grinds, and labour intensity is big, poor product quality, and dust is many, and noise is big.This situation does not still have basic the improvement so far.

In order to change this backward technology, domestic have big enterprise of several families also to manufacture and design the outer support formula of hydraulic pressure cylindrical shell, end socket docking facilities (being called for short " hydraulic pressure is to canister "), by the cylindrical shell positioner, flatten cylindrical shell kludge that mechanism, take-up device three parts form and the thin-walled pressure vessel circumferential weld assembling device of the upright dress form be made up of anchor clamps, transmission, manipulation three parts etc.

It is complicated that but these large-scale mechanization mounting equipments are made, handled, and floor space is big, and supporting requirement is high, involves great expense, be suitable for making bigger in batches specification product, and the incompatibility small lot, the product manufacturing of many kinds is produced.

It is stop with what be fixed thereon with the ratchet that foreign patent SU 1027000A discloses with flexible active belt, is the over-sleeved auxiliary welding equipment of tension element with the sprocket wheel.But this technology does not relate to the correction of circumferential weld misalignment degree.

In order to alleviate labor strength, improve working environment, increase work efficiency, guarantee the weldment quality, adapt to small lot, the characteristics of many kinds, the purpose of this utility model are to develop a kind of cylindrical shell girth welding misalignment degree of can proofreading and correct can be applicable to longitudinal joint again and cover outward and strengthen part assembly welding, simple in structure, easy to operate auxiliary welding equipment.

The technical solution of the utility model is: the utility model is made up of the closed active ring of being made up of the certain width chain link and a jack unit that has a pair of grapple, closed active ring is enclosed within on the workpiece to be welded, the push rod of jack unit passes the chain link intermediate gaps and withstands on the workpiece selected element, and a pair of grapple that is positioned at the push rod both sides hooks the two pitch chains joint on the closed active ring respectively.

Advantage of the present utility model is: simple in structure, easy to operate, and the application diameter wide ranges, compatible strong, once adjust, integral solder, preventing from scar is ensured the quality of products.

Three-dimensional structure diagram when accompanying drawing 1 is enclosed within on the workpiece to be processed for the utility model;

Accompanying drawing 2 is cutaway views of accompanying drawing 1;

Accompanying drawing 3 is schematic diagrames that the utility model is used for longitudinal seam welding.

Accompanying drawing 4 is that expression the utility model is used for the outer schematic diagram of strengthening part 9 assembly weldings that covers.

Accompanying drawing 5 is schematic diagrames that expression the utility model is proofreaied and correct the misalignment degree when being used to have girth welding between two cylindrical shells of certain taper.

In the accompanying drawing 1, the closed active ring of being made up of the joint number and the adjustable chain link of pitch of certain width 2 is enclosed within two and treats on the circumferential weld 12 that assembly welding cylindrical shell 1 and 1 ' forms, the push rod 7 of jack unit 6 passes space in the middle of the chain link and radially withstands on circumferential weld 12 to have unfitness of butt joint be the place to be corrected (A that sees Fig. 1 is to view) of δ, be connected a pair of grapple 5 that is positioned at push rod 7 both sides on the jack unit 6 and hook the two pitch chains joint that is positioned at 7 both sides on the active ring 2 respectively, start manual oil pressure pump 3 and make 7 elongations by flexible pipe 4, so 2 pairs 1, misalignment degree to be corrected place applies radial pressure P and makes δ be reduced to 0 or satisfy specification requirement on 1 ' the 7 pairs of circumferential welds 12 when applying the hoop clamping force.If also there is undesirable unfitness of butt joint in 12 other places at circumferential weld, then the active ring 2 of lock ring makes the misalignment degree of whole piece circumferential weld meet specification requirement everywhere for relying on the way that adds chock or crowbar sled, carries out assembly welding then.Among Fig. 28 is back-moving springs of jack unit 6.In the accompanying drawing 3, thereby the length of adjusting push rod 7 equally can be adjusted the gap S that the radial pressure of hoop clamping force that active ring applies and push rod 7 reaches control or eliminates longitudinal joint.The utility model also can be used for curvature identical or close two or several part forms as a whole by the longitudinal joint assembly welding.In the accompanying drawing 4, equally adjust radial pressure that hoop clamping force and 7 that active ring applies applies and control or eliminate the outer gap b that covers 1 of part 9 and cylindrical shell by the length of adjusting push rod 7.In the accompanying drawing 5, the 10th, hook, the 11st, steel wire rope, the two is in order to the fixing position of active ring 2.The 14th, chock.To the assembly welding of cylindrical shell that certain taper is arranged the time, can utilize several groups of hooks, steel wire rope, chock are helped the correction to whole piece circumferential weld misalignment degree.The utility model is equally applicable to the cylindrical shell longitudinal joint assembly unit welding of certain taper.

Jack unit 6 in the utility model can adopt hydraulic means: for example oil pressure pump, oil hydraulic cylinder mechanism; Also can adopt mechanisms such as screw mandrel with a pair of grapple, tooth bar ratchet.

Closed active ring 2 in the utility model can be that carrier bar fastens or the hook fastening structure.

Claims

1, the adjustable lock ring roof pressure of a kind of flexibility adjuster, it is characterized in that: form by the closed active ring of forming by the certain width chain link 2 and a jack unit 6 that has a pair of grapple 5, closed active ring 2 is enclosed within on the workpiece to be welded, the push rod 7 of jack unit 6 passes the chain link intermediate gaps and withstands on the workpiece selected element, and a pair of grapple 5 that is positioned at push rod 7 both sides hooks the two pitch chains joint on the closed active ring 2 respectively.

2, the adjustable lock ring roof pressure of flexibility according to claim 1 adjuster is characterized in that: jack unit 6 can be hydraulic pressure, screw mandrel or tooth bar pawl device.

3, the adjustable lock ring roof pressure of flexibility according to claim 1 adjuster is characterized in that: closed active ring 2 can be that carrier bar fastens or hook fastens.