CN204235457U - Arc tooth anti-slip pipe wrench - Google Patents

Abstract

The utility model discloses an anti-slip pipe wrench with arc teeth, which comprises an upper and lower jaw of the pipe wrench. Pipe wrench occlusal teeth are respectively arranged on the opposite surfaces of the upper and lower jaws, and the opposite surfaces of the upper and lower teeth are arc surfaces. The utility model can effectively control the pipe wrench from slipping to cause personal injury accidents, prolong the service life of the pipe wrench and reduce the operation cost.

Description

Arc teeth non-slip pipe wrench

technical field

The utility model belongs to the field of pipe wrench and relates to an anti-slip pipe wrench with arc teeth.

Background technique

The teeth of the currently used pipe wrench are in a straight line, and the oil pipe is a cylinder. In normal use, the effective contact between the straight teeth of the pipe wrench is one or two teeth, which is easy to slip and has a short life. The pipe wrench is easy to slip when the construction workers are operating, which frequently causes personal injury accidents. After the effective teeth of the pipe wrench are damaged, the pipe wrench is frequently replaced with a new one, which increases the operating cost.

Contents of the invention

The purpose of the utility model is to provide an anti-slip pipe wrench with arc teeth, which can effectively control the slipping of the pipe wrench to cause personal injury accidents, prolong the life of the pipe wrench, and reduce the operating cost.

The purpose of this utility model is achieved in that a kind of anti-slip pipe wrench with arc teeth includes the upper and lower jaws of the pipe wrench, the opposite surfaces of the upper and lower jaws are respectively provided with the occlusal teeth of the pipe wrench, and the opposite surfaces of the upper and lower jaws are arc surfaces.

As an improvement of the utility model, the radius of the arc-shaped surface is 300 mm, and the angle covered by the arc-shaped surface on its circumference is 20 degrees.

As a further improvement of the utility model, the included angles between adjacent teeth of the pipe wrench's occlusal teeth on the upper and lower arc surfaces are both 88 degrees.

As a further improvement of the utility model, the tooth tips of the pipe wrench engaging teeth on the upper arc surface are all inclined to the center of the arc surface, and the inclination angle of each tooth is 2 degrees; the pipe wrench engaging teeth on the lower arc surface The tips are inclined to both sides of the arc surface, and the inclination angle of each tooth is 2 degrees.

The utility model changes the conventional linear teeth into arc-shaped teeth corresponding to the oil pipe to increase the effective tooth contact surface, prevent slipping, and prolong the service life of the pipe wrench. No personal injury accident has occurred after using the pipe wrench, which reduces the operation cost.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is the main view structure schematic diagram of the utility model;

Fig. 2 is a schematic diagram of the size and structure of the arc-shaped surface of the utility model.

Detailed ways

An arc tooth anti-slip pipe wrench, as shown in Figure 1, comprises pipe wrench upper and lower jaws 2, 4, pipe wrench occlusal teeth 1, 3 are respectively arranged on the opposite surfaces of the upper and lower jaws 2, 4, and the upper and lower jaws 2, 4 are opposite to each other. The surfaces are all arc-shaped.

As an improvement of the present utility model, as shown in FIG. 2 , the radius R of the arc-shaped surface is 300 mm, and the angle a covered by the arc-shaped surface on its circumference is 20 degrees.

As a further improvement of the utility model, the included angles between adjacent teeth of the pipe wrench's occlusal teeth on the upper and lower arc surfaces are both 88 degrees.

As a further improvement of the utility model, the tooth tips of the pipe wrench on the upper arc surface are all inclined to the center line 5 of the arc surface, and the inclination angle of each tooth is 2 degrees; the pipe wrench on the lower arc surface The tooth tips of the occlusal teeth 3 are all inclined to both sides of the arc surface, and the inclination angle of each tooth is 2 degrees.

Claims (3)

1. An anti-slip pipe wrench with arc teeth, comprising pipe wrench upper and lower jaws, pipe wrench occlusal teeth are respectively arranged on the relative surfaces of the upper and lower jaws, it is characterized in that: the relative surfaces of the upper and lower jaws are arc surfaces, and the arc surfaces The radius of the arc surface is 300mm, and the angle covered by the arc surface on its circumference is 20 degrees. 2. The arc tooth anti-slip pipe wrench according to claim 1, characterized in that: the angles between adjacent teeth of the pipe wrench's occlusal teeth on the upper and lower arc surfaces are both 88 degrees. 3. The arc tooth anti-slip pipe wrench according to claim 1 or 2, characterized in that: the tooth tips of the pipe wrench's occlusal teeth on the upper arc surface are all inclined to the center of the arc surface, and the inclination angle of each tooth is 2 The tooth tips of the pipe wrench occlusal teeth on the lower arc surface are all inclined to both sides of the arc surface, and the inclination angle of each tooth is 2 degrees.