CN2619757Y

CN2619757Y - Involute jaw pipe wrench

Info

Publication number: CN2619757Y
Application number: CN 03227198
Authority: CN
Inventors: 郭道武
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-18
Filing date: 2003-03-18
Publication date: 2004-06-09
Anticipated expiration: 2013-03-18

Abstract

An involute nip pipe tong is provided, which belongs to a pipeline installation tool, and comprises a tong head (1) and a tong handle (6) which comprises a pin roll (2) and a blocked ring (3). The utility model is characterized in that: a serration jaw is arranged at the elbow inner edge of the tong head (1), an involute saw strip (4) is arranged at the outer jaw of the tong handle (6), the pipe tong nip which formed by the tong head (1) and the tong handle (6) is an involute nip. When use the pipe tong, loosening and the fastening operation can be done without turning by hand, to avoid the shortage of the time wasting and the force wasting caused by the statement that the operator need to bend and turn by hand to operate the exiting pipe tong, therefore the utility model not only can lighten the labor intensity, but also can improve the labor efficiency, is suitable for the installation and the maintenance tool of the various pipe.

Description

Involute folder mouthful pipe wrench

One, affiliated technical field:

The utility model relates to a kind of pipelayer's tool, is that a kind of mouth that presss from both sides is the pipe wrench of involute specifically

Two, background technology:

As everyone knows, pipe wrench is that pipeline is installed and the indispensable instrument during maintenance, and the old-fashioned pipe wrench that uses at present, the advance and retreat displacement between its binding clip and the pincers handle, promptly jaw to unclamp/close tightly be to adopt screw to regulate.This old-fashioned pipe wrench no matter be to tighten up or to loosen jaw, all must operating personnel be bent over to rotate set screw with hand in use, not only requires great effort but also time-consuming, brings inconvenience to the user.

Three, summary of the invention:

In order to overcome existing pipe wrench in use, need operating personnel to bend over and save screw with hand adjustment, the defective of bringing such as waste time and energy, the utility model provides an a kind of involute simple in structure folder mouthful pipe wrench, to alleviate the pipe wrench labor intensity of operating personnel, improve service efficiency.

The utility model is that the technical scheme that its technical problem of solution is adopted is: remove the adjusting device of existing pipe wrench, use involute folder mouth instead.Concrete way is: design comprises binding clip, the pipe wrench of pincers handle and bearing pin, and its feature is: the head of the rear portion of binding clip and pincers handle is equipped with through hole, in through hole, by bearing pin and ring washer binding clip and pincers handle is connected as one; Along being provided with the zigzag jaw, the elbow outer jaw that clamps handle is provided with the Saw blade of involute shape in the elbow of binding clip, and the jaw that binding clip and pincers negative winding stem are formed is involute shape folder mouth.

The beneficial effects of the utility model are: 1. have only binding clip and pincers handle to connect as one, removed adjusting device, so it are simple in structure by bearing pin and ring washer by the utility model, and handling ease, cost is low; 2. because jaw of the present utility model becomes involute shape, can directly block workpiece during use, not need hand tighten screw to carry out degree of tightness and regulate, be user-friendly to, alleviate operator's labour intensity, accelerate the speed of attaching/detaching.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model

Fig. 2 is the structure upward view of binding clip in the utility model.

Fig. 3 is the structural representation of bearing pin in the utility model.

Fig. 4 is the structural representation front view of binding clip in the utility model.

Fig. 5 is the structural representation of pincers tooth.

Among the figure: 1, binding clip 2, bearing pin 3, back-up ring

4, pincers tooth 5, screw 6, pincers handle

Five, the specific embodiment:

Below in conjunction with drawings and Examples the utility model is further specified.

With reference to accompanying drawing: design a binding clip (1) that 70～80 ° of elbows are arranged, the rear portion of binding clip (1) is provided with through hole, the elbow of binding clip (1) is interior along being provided with zigzag friction clamp mouth, the distance of the sawtooth jaw on edge is 65～75mm in the rear through hole center of this binding clip and the elbow, length along the sawtooth jaw in the elbow is 45～55mm, and the horizontal distance of through hole center and sawtooth jaw root is 22～28mm, and the jaw point of sawtooth jaw is 70 °～80 ° with the horizontal line angle; Other designs a pincers handle (6) that elbow is arranged, above-head at pincers handles (6) is provided with a through hole, be provided with bearing pin (2) in this through hole, bearing pin (2) passes the through hole of binding clip (1) and will clamp handle (6) through back-up ring (3) and is fixed as one with binding clip (1), on the outer of pincers handle (6) elbow,, make binding clip and clamp the folder mouth that forms between handle to be involute clevis mouth by screw (5), binding agent or the pincers tooth bar (4) that is welded with involute shape.The involute shape flank of tooth of pincers tooth is provided with the irregular sawtooth of multiple tracks tooth pitch, to increase friction.This involute folder mouthful pipe wrench changes without hand, can directly carry out tight/pine operation, and is time saving and energy saving, is fit to do the erecting tools of various pipelines.

Claims

1, a kind of involute folder mouthful pipe wrench, fixedly form by bearing pin (2) and back-up ring (3) by binding clip (1), pincers handles (6), it is characterized in that: the elbow of binding clip (1) is interior along being provided with the zigzag jaw, be fixed with the Saw blade (4) of involute shape on the elbow outer jaw of pincers handles (6), make between the jaw of binding clip (1) and the head of pincers handles (6) to be involute shape folder mouth.

2, involute folder mouthful pipe wrench according to claim 1, it is characterized in that: the involute serration bar (4) on binding clip (6) the elbow outer is fixing by screw, binding agent or welding, and the involute shape flank of tooth is provided with the irregular sawtooth of multiple tracks tooth pitch.

3, involute folder mouthful pipe wrench according to claim 1 and 2, it is characterized in that: the distance of the sawtooth jaw on edge is 65～75mm in the rear through hole center of described binding clip (2) and the elbow, length along the sawtooth jaw in the elbow is 45～55mm, be 22～28mm along the horizontal distance of serrated pliers oral area in the through hole center of elbow and its, the jaw point of sawtooth jaw is 70 °～80 ° with the horizontal line angle.