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A brace-type unilateral bolt fastener

A technology of unilateral bolts and fasteners, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problem that bolts cannot be fastened on one side, and achieve good fastening effect, high node reliability, and easy operation

Active Publication Date: 2015-08-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the deficiency that the existing bolts cannot be fastened on one side and improve the fastening effect of the bolts

Method used

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  • A brace-type unilateral bolt fastener
  • A brace-type unilateral bolt fastener
  • A brace-type unilateral bolt fastener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The structure of the unilateral bolt fastener in this embodiment is set to:

[0020] Such as Figure 1a and Figure 1b As shown, a screw rod with an axial center through hole is provided, the tail section of the screw rod is a threaded rod 1a matched with the nut 3, the middle section is a polished rod 1b, and the front section is a support head 1c; the support head 1c has a hollow inner cavity to support The side wall of the head 1c opens at the symmetrical position of the "ten", forming four elastic petals 1d that can be stretched in an umbrella shape. The inner side wall of the elastic petals 1d is a slope surface, and the slope surface makes the front end of the hollow cavity have a diameter greater than Tail diameter; in specific implementation, after inserting the pull rod 2a from the side where the supporting head 1c is located, the sealing head 1f is screwed onto the supporting head 1c, so that the bolt becomes a whole, and the sealing head 1f and the supporting...

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PUM

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Abstract

The invention discloses a bracing type single-edge bolt fastener, which is characterized by comprising a screw stem with an axial center through hole, wherein the tail section of the screw stem is a threaded rod which is matched with a screw cap, the middle section of the screw stem is a smooth rod, and the front section of the screw stem is a support head; the support head is provided with a hollow inner cavity, an opening is formed in a symmetrical cross position on the side wall of the support head to form four elastic segments which can be braced in an umbrella shape, the inner side walls of the elastic segments are inclined faces, and the front diameter of the hollow inner cavity is enabled to be larger than the tail diameter of the hollow inner cavity due to each inclined face; a pulling rod is arranged in the center axial through hole of the screw stem in a penetration way, and a cross brace rod is fixedly connected onto the front end of the pulling rod in a T shape; and by the adoption of the pulling rod, the cross brace rod can be driven to move forward to the tail section side of the screw stem, and the four elastic segments are braced in the umbrella shape through the cross brace rod. According to the bracing type single-edge bolt fastener, only a bolt is needed to be mounted on one side, and the single-edge operation of the bolt is realized.

Description

technical field [0001] The invention relates to a bolt fastener used for unilateral installation in a workpiece, belonging to the technical field of construction. Background technique [0002] As far as the currently commonly used bolts are composed of a screw and a nut, when fastening a workpiece, 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, which is only suitable for open section components, but in some occasions, such as closed section components or components that are inconvenient to access one side, this commonly used bolt is used. encountered difficulties. 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, so it cannot be installed. [0003] It is difficult to apply the pre-tightening force of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B13/06
Inventor 王静峰龚旭东
Owner HEFEI UNIV OF TECH
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