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Power wrench

A wrench and power technology, applied in the field of power wrench, can solve problems such as the complex structure of the transmission mechanism, and achieve the effects of improving work efficiency, fast speed, and simple structure

Pending Publication Date: 2018-07-20
ZHENGZHOU DONGCHEN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a power wrench to solve the problem in the prior art that the structure of the transmission mechanism is complicated in order to realize the adjustable output torque

Method used

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Examples

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Embodiment Construction

[0022] Embodiment 1 of a power wrench such as Figure 1~3 As shown: the power wrench in the present invention is an electric wrench, including a housing, and the front end of the housing is provided with a torque output structure for torque output. The power wrench includes a transmission mechanism, the transmission mechanism includes a front transmission wheel 3 and a rear transmission wheel 7 arranged on the front and rear coaxial lines, and the torque output structure is formed by an inner square hole 4 arranged on the front transmission wheel 3 . The rear transmission wheel 7 is connected to the front transmission wheel through a one-way transmission structure 6. The one-way transmission structure 6 in this embodiment is an end-face ratchet transmission structure. The end-face ratchet transmission structure belongs to the prior art. The ratchet on the wheel and the ratchet wheel that is arranged on the front transmission rear end face, when the rear transmission wheel rota...

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Abstract

The invention relates to a power wrench. The power wrench comprises a housing, wherein the front end of the housing is equipped with a torque output structure used for torque output; and at least twopower sources which are in transmission connection with the torque output structure and are used for outputting torques of different sizes to the torque output structure separately are arranged on thehousing. According to the power wrench disclosed by the invention, more than one power source is arranged, and each power source outputs torques of different sizes to the torque output structure, sothat different power sources are only needed for outputting torques for different torque output environments. Compared with the prior art, the power wrench has the advantages that different torque output is realized by only one power source and a complex transmission mechanism, and the structure is simple.

Description

technical field [0001] The invention relates to a power wrench with adjustable output torque. Background technique [0002] Bolt connection is one of the most commonly used methods in mechanical connection, and it is widely used in metallurgy, mining, high-speed rail and other industries. When applying torque to bolts or nuts, the torque required in different environments is often different, which requires the output torque of the power wrench to be adjustable. [0003] An existing power wrench capable of adjusting the output torque, such as "A Torque-Adjustable Electric Wrench for High-speed Railway Construction" disclosed in Chinese patent CN206140379U, the power wrench includes a housing, and the housing is provided with a motor that is a power source. The sleeve rod is connected to the motor through the transmission mechanism. The sleeve rod is the torque output structure for outputting torque. The transmission mechanism includes a connecting pinion coaxially connected ...

Claims

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Application Information

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IPC IPC(8): B25B21/00B25B23/145B25B23/147
CPCB25B21/00B25B23/145B25B23/147
Inventor 尚廷东
Owner ZHENGZHOU DONGCHEN SCI & TECH
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