Gear type traceless pipe wrench and method

Abstract

The invention discloses a gear type traceless pipe wrench and a method. The traceless pipe wrench comprises a jaw and a wrench handle, wherein the jaw comprises an upper jaw assembly and a lower jaw assembly, and the wrench handle comprises a rocking handle assembly; one end of the upper jaw assembly is hinged to the rocking handle assembly, the other end of the upper jaw assembly is hinged to thelower jaw assembly, and a large gear is fixedly arranged at the other end of the lower jaw assembly; a small gear is arranged at the hinged position of the upper jaw assembly and the rocking handle assembly; a return ratchet wheel is arranged on the right side of the small gear; and the upper jaw assembly and the lower jaw assembly each comprise a clamping part, and a rubber pad is arranged on the inner side wall of each clamping part. The working method of the traceless pipe wrench completes the construction of a pipe through a plurality of steps. According to the traceless pipe wrench, thegear combination is arranged, so that the holding force of the traceless pipe wrench is large in the construction process, and the slipping probability is small; the rubber pads are arranged, so thatthe surface of the pipe is effectively protected; and the return ratchet wheel is arranged, so that the jaw of the traceless pipe wrench can loosen the pipe when the traceless pipe wrench returns, thetraceless pipe wrench does not break away from the pipe, the force can be quickly applied when the pipe is screwed, and time and labor are saved.

Description

technical field

[0001] The invention relates to a pipe wrench and a method, in particular to a gear type non-marking pipe wrench and a method. Background technique

[0002] Pipe wrench is a common tool for pipeline installation and repair. It is used to turn metal pipes or other cylindrical pipe fittings. Pipe wrench is widely used in places with low installation requirements such as ordinary galvanized pipes due to its large bite force and easy use. Existing pipe wrench includes many types: tooth type, chain type, water pump wrench, belt wrench, etc., but there are also some fatal weaknesses in existing pipe wrench. The anti-loosening torque is obtained, so the existing pipe wrench cannot clamp and rotate ceramic pipe fittings, thin-walled pipe fittings, plastic pipe fittings, etc., otherwise the pipes are easily deformed and twisted. If the pipeline adopts the factory prefabricated anticorrosion process, using the existing pipe wrench to install will also produce bite mar...

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