CN2083981U

CN2083981U - Positioning clamp for welding

Info

Publication number: CN2083981U
Application number: CN 91202953
Authority: CN
Inventors: 符世朝
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-02-25
Filing date: 1991-02-25
Publication date: 1991-09-04

Abstract

The utility model relates to a positioning clamp for welding. A circular cavity (5) is formed by two semicircle cavities of an upper and a lower elements (3, 4) of the clamp. The connection surface on both sides of the two semicircle cavities, one side is connected by hinging, and the other side is fixed tightly by bolts. The middle part of the upper and the lower semicircle cavities are respectively provided with a welded window. The positioning clamp for welding has simple structure, accurate para-position, convenient assembly and disassembly, high efficiency, and low cost.

Description

Positioning clamp for welding

The utility model belongs to Clamp for welding, particularly relates to the contraposition jig that a kind of welded pipe is used.The CN87215720 patent is described to be a kind of reinforcing bar Clamp for welding, also can be used for the pipe butt welding.This jig utilizes the cam wrench that two reinforcing bars location is clamped, the support plate sleeve is arranged under claw, in the tube spring block is arranged, slide block can move at moving support plate of the troughed belt of the effect lower edge of spring hydraulic cylinder sleeve and claw, thereby two reinforcing bars are compressed, and this Clamp for welding structure is still multiple assorted, cost is higher; The introduction of CN88205293.4 patent be a kind of pipe butt welding retrievable cushion device, its advantage is can overlap not occur and reinforcement is overproof, and back side uniform in shaping, improves yield rate.Be suitable for demanding pipeline welding, use said apparatus there is no need for the not high pipeline of welding requirements, so some local use is welded a kind of than simple jig of contraposition at present, figure five is this jig structural representation.Upper and lower symmetrical configuration of this jig formed circular cavity by two semicircle cavity butt joints, respectively has a welding window in the middle of each semicircle chamber, and the joint face that has screw is respectively stretched out on semicircle cavity both sides, the both sides bolt tightening.Existing contraposition jig is simple in structure, and cost is low, easily promote, but trouble of contraposition is adjusted in dismounting, and is time-consuming, influences welding job efficient.

The purpose of this utility model, the advantage simple in structure of reservation contraposition jig overcomes dismounting and adjusts the time-consuming shortcoming of contraposition, to improve welding job efficient.Its technical scheme is: the upper and lower semicircle cavity of welding contraposition jig both sides joint face, with hinge connect on one side, the another side bolt tightening, for further shortening dismounting with to bit time, upper and lower semicircle cavity both sides, joint face connects with hinge on one side; The last part another side face of tightening up has limit U-shaped groove, following part over against on part U-shaped groove place, T font upset bolt is installed.

Fig. 1, Fig. 2 are the welding contraposition jig structural representation that a T font tightens up the upset bolt;

Fig. 3 is the welding contraposition jig structural representation that two T fonts tighten up the upset bolt.

Fig. 4 is on one side hinge, and another side is with the welding contraposition jig structural representation of general bolt tightening;

Fig. 5 is the structural representation of existing welding contraposition jig.

Embodiment one: among Fig. 1, and (1) hinge, (2) T shape upset bolt, (3) go up part, and (4) are part down, (5) circular cavity, (6) saturating limit U-shaped groove, (7) welding window.

Embodiment two: Fig. 3 is the welding contraposition jig that two T fonts tighten up the upset bolt, and its structure is basic identical with embodiment one.

Embodiment three: among Fig. 4, and (1) hinge, part on (3) jig, part under (4) jig, (8) general other structure of clamping bolt is with embodiment one.

This welding contraposition jig structure is very simple, and contraposition is accurate, easy accessibility, and the welding efficiency height, cost is low, easily applies.

Claims

1, a kind of welding contraposition jig, upper and lower of this jig is a symmetrical structure, form circular cavity by two semicircle cavity butt joints, in the middle of each semicircle cavity, respectively have a welding window, semicircle cavity both sides are respectively stretched out and are had the screw joint face, the both sides bolt tightening, and feature of the present utility model is: the upper and lower semicircle cavity of welding contraposition jig both sides joint face, connect the another side bolt tightening with hinge on one side.

2, according to the welding contraposition jig of claim 1, it is characterized in that: upper and lower semicircle cavity both sides joint face, with hinge connect on one side; The last part another side face of tightening up has the limit U-lag, following part over against on part U-shaped groove place, T font upset bolt is installed.