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Double-screw bolt fast-screwing instrument

A technology of double-ended studs and tools, which is used in manufacturing tools, screwdrivers, metal processing, etc., can solve the problems of double-ended studs, inconvenient use, low efficiency, etc., and achieve the effect of reducing transmission friction.

Inactive Publication Date: 2008-03-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Usually, the double-ended studs are tightened with double nuts, screwed into the body with a wrench, and then the two nuts that are tightened are removed. The process of removing the two nuts that are tightened often causes the double-ended studs to break from the The case of carrying out or loosening in the machine body, and in the mechanical assembly process of mass or mass production, this method is not suitable for low efficiency and inconvenient use

Method used

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  • Double-screw bolt fast-screwing instrument

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Embodiment Construction

[0008] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0009] Referring to Fig. 1, the present invention includes a housing 1 and a thrust bearing 2, a push rod 3 and a screw sleeve 4 arranged in the housing 1 from top to bottom in sequence, and the upper end of the housing 1 is provided with a square hole 9 that can be connected with an external tool, The thrust bearing 2 is set on the upper end of the ejector rod 3, and put them together in the casing 1. There is a gap of 0.3 mm between the ejector rod 3 and the casing in the axial direction. Press the ejector rod 3 and the thrust bearing 2, and finally limit the position with the nut 6, and fix it with the jacking screw 5.

[0010] The square hole 9 provided at the upper end of the housing 1 is used to connect the air trigger to drive the tool to rotate. It can also be inserted with a square tenon of tools such...

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Abstract

A tool for screwing a stud bolt rapidly includes a shell, a thrust bearing, an ejecting rod and a threaded sleeve, which are placed in the shell from top to down. The thrust bearing is sheathed on the upper end of the ejecting rod. The threaded sheath is arranged on the lower end of the ejecting rod. The shell and the threaded sheath are connected by double square thread. Thus the present invention which uses the little self-locking ability of the double square thread connection to transmit a torque and uses the thrust bearing on the upper end of the ejecting rod to maximally reduce a drive friction so that the tool can be withdrawn from the stud bolt easily.

Description

technical field [0001] The invention relates to a tool for installing double-ended studs, in particular to a tool for quickly screwing double-ended studs. Background technique [0002] Usually, the double-ended studs are tightened with double nuts, screwed into the body with a wrench, and then the two nuts that are tightened are removed. The process of removing the two nuts that are tightened often causes the double-ended studs to break from the The case of carrying out or loosening in the body, and in the mechanical assembly process of mass or mass production, this method is not suitable for low efficiency and inconvenient use. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned shortcoming of prior art, provide a kind of fast screwing stud tool that can screw in stud bolt lightly and quickly, and reduce transmission friction to the greatest extent. [0004] In order to achieve the above-mentioned purpose, the technic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B23/00B23P19/06
Inventor 刘俊生
Owner SHAANXI UNIV OF SCI & TECH
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