CN2551408Y

CN2551408Y - Pipe wrench

Info

Publication number: CN2551408Y
Application number: CN 02210636
Authority: CN
Inventors: 张延作
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-14
Filing date: 2002-03-14
Publication date: 2003-05-21
Anticipated expiration: 2012-03-14

Abstract

The utility model involves a tube spanner. The utility model comprises a spanner head and a spanner body which are connected into a whole body through a rotating axle, upper and lower spanner mouths with saw-tooth shaped teeth which are cut on the contacting surface of the pipe body outer wall, the upper spanner mouth of the spanner head is a straight plate shape, and the lower spanner mouth of the spanner body is an arc curved surface shape on the outer wall of the circumferential along the pipe body, a torsion spring is fixed on the spanner body through a torsion spring axle, one end of the torsion spring is exerted on the back part of the spanner head, and the other end is clipped on the convex table of the spanner body. The inner thread is made inside the handle at the tail part of the spanner body. The utility model has the advantages that the structure is simple, the manufacture and the operation are convenient, and the service life is long; the utility model can effectively clip the pipe fittings.

Description

Pipe vice

Affiliated technical field the utility model relates to a kind of hardware ﹠ tools, especially is applicable to the pipe vice of dismounting and installation oil well oil-pumping pipeline.

Background technology is used to dismantle and install the pipe vice of oil transportation pipeline at present, owing to the structural design reason, after use a period of time, be used to connect a stressed yielding wearing and tearing in back of revolving of binding clip and caliper, so make jaw clamping body effectively, influence result of use.

The summary of the invention the purpose of this utility model provides a kind of simple in structure, in use the pipe vice of clamping oil well oil-pumping tubing body long-term effectively.

For achieving the above object, the utility model pipe vice has by revolving binding clip and the caliper that axle connects as one, with milling on the surface that the pipe fitting outer wall contacts upper jaw, the lower jaw of zigzag teeth are arranged, and the binding clip upper jaw that contacts with the pipe fitting outer wall is straight plate shape, the lower jaw of caliper is the circular arc camber shape along the pipe fitting peripheral outer wall, torsion spring is fixed on the caliper by torsion axis and torsion spring one end acts on the binding clip back, and the other end is fastened on the boss of caliper.

After adopting said structure,, can carry out bit shift compensation, upper and lower jaw is closely contacted with pipe fitting all the time, guarantee effective clamping pipe fitting to the axle that revolves that has worn and torn by straight plate shape and the circular arc camber structure of lower jaw and the acting in conjunction of torsion spring of upper jaw.

As further improvement of the utility model, the afterbody handle inside of caliper is attacked and is shaped on female thread structure.After adopting this structure, this pipe vice can be connected with other automations, realizes the automation of dismounting pipe fitting.

In sum, the utility model has the advantages that: simple in structure, making, use, easy to operate, can be long-term effectively in the work of dismounting and installation pipeline the clamping pipe fitting, long service life.

Description of drawings Fig. 1 is the structural representation of the utility model pipe vice.

The specific embodiment as shown in Figure 1, the utility model pipe vice has by iron axle 3 iron binding clip 1 that connects as one and the calipers 2 that revolve, with milling on the surface that pipe fitting 6 outer walls contact the upper jaw 1-1 of the binding clip 1 of zigzag teeth being arranged is that the lower jaw 2-1 of straight plate shape, caliper 2 is the circular arc camber shape along pipe fitting 6 peripheral outer wall, steel torsion spring 4 is fixed on the caliper 2 by torsion axis 5 and torsion spring 4 one ends act on binding clip 1 back, and the other end is fastened on the boss of caliper 2.The afterbody handle 2-2 inside of caliper 2 is attacked and is shaped on female thread structure.

The utlity model has simple in structurely, make, easy to operate, the characteristics of long service life; Clamping pipe fitting effectively in use.

Claims

1, a kind of pipe vice, it comprises by revolving binding clip (1) and the caliper (2) that axle (3) connects as one, with milling on the surface that pipe fitting (6) outer wall contacts the upper jaw (1-1) of zigzag teeth is arranged, lower jaw (2-1), it is characterized in that: the upper jaw (1-1) of the binding clip (1) that contacts with the pipe fitting outer wall is straight plate shape, the lower jaw (2-1) of caliper (2) is the circular arc camber shape along pipe fitting (6) peripheral outer wall, torsion spring (4) is fixed on the caliper (2) by torsion axis (5) and an end of torsion spring acts on binding clip (1) back, and the other end is fastened on the boss of caliper (2).

2, pipe vice according to claim 1 is characterized in that: afterbody handle (2-2) inside of caliper (2) is attacked and is shaped on female thread structure.