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Rotary closed type unilateral bolt fastener

A technology of unilateral bolts and fasteners, applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problem that bolts cannot be fastened unilaterally, and achieve the effect of good fastening effect, convenient production and simple operation.

Active Publication Date: 2015-04-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to avoid the disadvantages of the above-mentioned prior art, the present invention provides a rotary closed unilateral bolt fastener to overcome the deficiency that the existing bolts cannot be unilaterally fastened and improve the fastening effect of the bolts

Method used

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  • Rotary closed type unilateral bolt fastener
  • Rotary closed type unilateral bolt fastener
  • Rotary closed type unilateral bolt fastener

Examples

Experimental program
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Embodiment Construction

[0026] The structural settings of the rotary closed unilateral bolt fastener in this embodiment include:

[0027] Such as Figure 1a and Figure 1b As shown, the front body of the screw 1 is set as a threaded rod 1a, the middle part is a polished rod 1d, and the tail of the screw 1 is a polished rod journal section 1b; the front end of the screw 1 is marked with an installation prompt line 1c at an interval of 120°; The threaded 1a bar of nut 3 and screw rod 1 is threadedly engaged (as Figure 5a shown);

[0028] Such as Figure 2a and Figure 2b As shown, the three ring cards 2 are respectively the front card 2a, the middle card 2b and the tail card 2c, and the ring card 2 is set on the tail journal section 1b of the screw with a ring body; the front end card 2a and the middle card 2b can be placed on the The journal section rotates freely, and the tail clip 2c is fixedly connected with the screw rod 1;

[0029] Such as Figure 3a and Figure 3b As shown, the side view...

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Abstract

The invention discloses a rotary closed type unilateral bolt fastener, which is characterized in that the front-segment rod body of a screw is a threaded rod, and the tail part of the screw is a polished rod shaft neck segment; a nut is matched with the threaded rod of the screw through threads; three circular cards are respectively a front-end card, a middle card and a tail card, and the sectors of the three circular cards can be axially overlaid on the same one circumferential position through rotation; and the sectors of the three circular cards can also be combined into a round plate body positioned on the same plane. The rotary closed type unilateral bolt fastener realizes unilateral operation and can be widely applied to civil and architectural engineering, mechanical engineering and the like.

Description

technical field [0001] The invention relates to a bolt fastener used for unilateral installation in a workpiece, belonging to the technical field of mechanical assembly. Background technique [0002] Common bolts are divided into two parts, the screw and the nut. It is necessary to insert the screw on one side and clamp the nut, and then tighten the nut with a tool on the other side. Workers need to work on both sides of the component at the same time, but in some special occasions, such as closed section components or components that are inconvenient to touch a certain side, it will not be possible to install using common bolts. [0003] For example: in the steel pipe concrete structure, at the joint of the beam column, because the column section is a closed section, ordinary bolts cannot be operated on both sides and cannot be installed. The existing core bolt technology has high requirements for the reserved accuracy of the bolt holes on both sides of the pipe wall, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B13/04
Inventor 王静峰龚旭东
Owner HEFEI UNIV OF TECH
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