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Laminated expansion bolt

An expansion bolt and laminated technology, which is applied in the direction of connecting components, pins, mechanical equipment, etc., can solve the problems of non-recyclable, easy loosening of stone plates, and expansion screws with diameter errors.

Pending Publication Date: 2015-04-22
伍振成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing expansion screw is composed of a screw, a nut and an expansion sleeve. The screw has a tapered end, and one end of the expansion sleeve is provided with a narrow slot. Drive the screw into the installation hole, then put the equipment installation hole on the threaded end of the head of the drop rod, and finally screw the nut on the threaded end of the head of the tie rod to fix the device on the wall. During the process of tightening the nut, the screw goes out And the expansion tube does not move, and the conical expansion tube at the screw rod tail expands to make it swell to the whole hole, so as to achieve fixation; the expansion screw in the prior art has errors in the diameter of the hole punched on the stone plate, and the nut Due to different tightening degrees, the expansion tube of the expansion screw cannot be fully expanded, so that the force between the screw and the wall in the tightened state will be much smaller than expected, resulting in the stone plate installed on the pendant. It is easy to loosen and cannot achieve a fixed effect well
Due to structural reasons, it is troublesome to disassemble and cannot be recycled; and the carrying capacity is not large

Method used

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  • Laminated expansion bolt
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a laminated expansion bolt includes a T-shaped bolt 1, a nut 2 arranged on the T-shaped bolt 1, several frustum expansion sleeves 3 set on the T-shaped bolt 1, and an expansion sleeve arranged on the frustum of the T-shaped bolt. The spacer ring 4 between the sleeves 3 and the stepped nylon sleeve 5 arranged outside the frustum expansion sleeve 3 . When in use, press the stacked expansion bolts into the installation hole 6, the outer end of the T-bolt 1 passes through the pendant 7, and then screw on the nut 2, the T-bolt 1 goes outward, and the outer edge of the cone expansion sleeve 3 is stuck in the installation On the inner wall of the hole, the truncated cone expansion sleeve 3 expands in a columnar shape under the action of the T-bolt 1 to make it swell to fill the entire hole, the pendant 7 is fixed on the wall 8, and the stone plate 4 is fixed on the pendant 7.

Embodiment 2

[0015] Such as figure 1 , figure 2 , image 3 As shown, several notches 31 are provided at the lower bottom of the three sets of frustum expansion sets to form several pieces of openings 32. The inner end of the stepped nylon sleeve 5 is provided with a protruding ring 51, and the outer part of the protruding ring 51 is The diameter is equal to the outer diameter of the spacer ring 4, the outer diameter of the stepped nylon sleeve 5 is roughly the same as the installation hole 6, the stepped nylon sleeve 5 sinks into the installation hole 6, and the bottom of the frustum expansion sleeve 3 The outer diameter of the bottom is larger than the outer diameter of the stepped nylon sleeve 5. When installing, the frustum expansion sleeve 3 takes the spacer ring 4 and the outer edge of the convex ring 51 as the fulcrum. The nylon sleeve 5 is pushed into the installation hole 6, and the spacer ring 4 also separates the frustum expansion 3 at intervals, prevents the conical expansion...

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Abstract

The invention relates to the field of bolts, in particular to a laminated expansion bolt. The laminated expansion bolt comprises a T-shaped bolt body, a nut arranged on the T-shaped bolt body, a plurality of frustum expansion sleeves arranged on the T-shaped bolt body in a sleeving mode, spacer rings arranged between the frustum expansion sleeves and stepped nylon sleeves arranged on the outer sides of the frustum expansion sleeves. Due to the structure, the expansion bolt is high in installation fastening force, stable, high in fixing force and installation accuracy, free of swinging, convenient to install and capable of being used for mounting and fixing stone slabs.

Description

technical field [0001] The invention relates to the field of screws, in particular to a laminated expansion bolt. Background technique [0002] Expansion screws are used to fix objects on walls or boards. The principle is to use the wedge-shaped slope to promote expansion and achieve a fixed effect. The existing expansion screw is composed of a screw, a nut and an expansion sleeve. The screw has a tapered end, and one end of the expansion sleeve is provided with a narrow slot. Drive the screw into the installation hole, then put the equipment installation hole on the threaded end of the head of the drop rod, and finally screw the nut on the threaded end of the head of the tie rod to fix the device on the wall. During the process of tightening the nut, the screw goes out And the expansion tube does not move, and the conical expansion tube at the screw rod tail expands to make it swell to the whole hole, so as to achieve fixation; the expansion screw in the prior art has er...

Claims

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Application Information

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IPC IPC(8): F16B13/06
CPCF16B13/065
Inventor 伍振成
Owner 伍振成
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