Single-hand ratchet wheel open spanner

Abstract

The invention discloses a single-hand ratchet wheel open spanner. The single-hand ratchet wheel open spanner comprises a handle bar, a regular jaw block, a movable jaw block and an adjusting worm arearranged on the handle bar, teeth are arranged on the movable jaw block, an adjusting handle is hinged to the handle bar, a driving rod is hinged to the adjusting handle, a connecting rod is hinged tothe end of the driving rod, and an upper reset spring is arranged in the handle bar; a center rod is connected to the upper reset spring, a clutch is arranged on the center rod, a braking ratchet wheel is movably arranged on the clutch, a braking pawl is movably arranged in the handle bar, a driving fluted disc synchronously moving with the braking ratchet wheel movably sleeves the center rod, the driving fluted disc is meshed with a driving chain wheel, and a driven chain wheel is arranged on the adjusting worm; a driving chain is arranged between the driving chain wheel and the driven chainwheel in a sleeving mode; and a pliers opening spring is arranged in the handle bar and is connected with the driving fluted disc through a steel wire so as to drive the driving fluted disc to reversely rotate to open the movable jaw block when the pawl is separated from the braking ratchet wheel.

Description

technical field [0001] The invention relates to a single-hand ratchet open-end wrench. Background technique [0002] A pipe wrench is well known in the industry as one of several types of wrenches used to grasp and turn threaded pipe and fittings for assembly or disassembly. Many pipe wrench are adjustable. For example, a common pipe wrench uses a manually driven worm gear attached to the adjustable jaw to vary the distance between the adjustable and fixed jaws. [0003] Often, access to the pipe is limited, making it difficult for a person using a pipe wrench to easily access the pipe, which in turn makes it difficult for a person using a pipe wrench to properly adjust the pipe wrench onto the pipe. In addition, when adjusting the general pipe wrench, the user needs two hands to hold the handle of the pipe wrench to start the adjustable jaw of the pipe wrench, which is very inconvenient to adjust. Contents of the invention [0004] The technical problem to be solved by...

AI Technical Summary

Problems solved by technology

[0003] Often, access to the pipe is limited, making it difficult for someone using a pipe wrench to easily access the pipe, which in turn makes it difficult for someone using a pipe wrench to properly adjust the pipe wrench to the pipe

In addition, when adjusting the general pipe wrench, the user needs two hands to hold the handle of the pipe wrench to start the adjustable jaw of the pipe wrench, which is very inconvenient to adjust

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