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Wrench

A wrench and arc-shaped technology, applied in the field of wrenches, can solve the problems of low flange bolt efficiency and narrow space, and achieve the effect of improving work efficiency and reducing the number of rotations.

Inactive Publication Date: 2012-08-29
HUAINAN MINING IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the decision of the underground construction environment, each pipeline system is often installed overhead or close to the side of the roadway. Therefore, for some pipelines with larger diameters and higher pressure levels, the flange bolts close to the side due to space narrow, such as figure 1 As shown, the rotation angle a of the ordinary straight handle wrench 5 is small, which makes the flange bolt 6 less efficient when fastening and dismounting

Method used

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Embodiment Construction

[0014] figure 2 It is a structural schematic diagram of a wrench embodiment of the present invention; as figure 2 Shown is an embodiment of the wrench of the present invention. The wrench includes an arc-shaped wrench body 1 , the arc-shaped wrench body 1 has a working end and a gripping portion, and the working end is provided with a regular polygonal through hole 3 .

[0015] The wrench of the above scheme has an arc-shaped wrench body 1, which adopts an arc-shaped structure so that the position held by the wrench can be relatively close to the pipe wall of the pipeline system compared with the position held by the ordinary straight handle wrench. When the road system is the same distance from the side of the roadway, the single rotation angle of the wrench is larger than that of the straight handle wrench. Less, improve work efficiency.

[0016] In practical applications, the regular polygonal through hole 3 is a regular dodecagonal hole. By adopting the regular dodeca...

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Abstract

The invention provides a wrench which comprises an arc wrench body. The arc wrench body is provided with an operating end and a holding part, wherein the operating end is provided with a regular polygon through hole. The wrench body adopts an arc wrench body, and the arc structure ensures that the holding part of the wrench can be more close to a pipe wall of a pipeline system than a holding part of a common straight handle wrench, so that the angle of the wrench rotating for one time is larger than that of a straight handle wrench in the condition of identical distances from the pipeline system to the side part of a laneway, and the rotating time of the wrench for fastening and disassembling flange bolts is less in same operating condition, and the operating efficiency is improved.

Description

technical field [0001] The invention relates to hardware tool technology, in particular to a wrench. Background technique [0002] In the coal mine industry, various pipeline systems are installed underground, and the pipe components in each pipeline system are generally connected by flanges. When installing and dismantling the piping system, the fastening and dismantling of the flange bolts is an essential process. Due to the decision of the underground construction environment, each pipeline system is often installed overhead or close to the side of the roadway. Therefore, for some pipelines with larger diameters and higher pressure levels, the flange bolts close to the side due to space narrow, such as figure 1 As shown, the rotation angle a of the ordinary straight handle wrench 5 is small, so that the efficiency of the flange bolt 6 is low when fastening and dismounting. Contents of the invention [0003] The invention provides a wrench, which is used for improving...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B13/48
Inventor 焦建国唐玉平佘武寿李松钟振亮王松林
Owner HUAINAN MINING IND GRP
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