KR200481559Y1 - Prevent separating device for hammer wrench - Google Patents

Abstract

The present invention relates to a hammer wrench release prevention device for preventing a detachment of a wrench in a process of tightening or unscrewing a fixing nut screwed to a bolt using a hammer wrench.
In order to achieve this, an upper body 10 having threads 11 formed on its outer circumferential surface and a fastening protrusion 12 protruding from its lower portion; A fastening groove 22 for fastening the fastening protrusion 12 is formed on the upper surface of the upper body 10 and a screw groove 21) are formed; A wrench support ring 30 that is fitted around the lower main body 20 to prevent the detachment of the hammer wrench 200; An elastic spring 40 for pressing the wrench support ring 30 with a predetermined elastic force; And an elasticity adjusting ring (50) for screwing the upper body (10) to adjust the elastic pressing force of the elastic spring (40).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hammer wrench,

The present invention relates to a hammer wrench release preventing device, and more particularly, to a breakaway preventing device that prevents a hammer wrench from being released when a hammer wrench is used to unscrew and tighten a nut from a stud bolt fastened to equipment of an industrial facility .

Currently, industrial equipment is joined by stud bolts and nuts, and a hammer wrench is used to unscrew and tighten the nuts against the stud bolts during maintenance work. However, there are many cases where a hammer is used as a hand or a foot in order to prevent the detachment of the hammer wrench when the nut is loosened and tightened to the stud bolt using the hammer in the industrial field. In such a case, It may cause a safety accident due to a blow.

Also, when using a hammer wrench to loosen the nuts from the stud bolts, one of the two workers is hammering the hammer wrench with the hammer, while the other one is using a hand or other tool It supports the hammer wrench. In this way, the labor cost is raised when the work is performed by one pair of workers. In addition, there is a risk of safety accidents and deterioration of work efficiency when the stud bolt is disassembled in a device where it is difficult to use a hammer wrench.

Meanwhile, as a conventional technique for solving such a problem, in Utility Model Application No. 1997-39088, a technique related to a hammer wrench release prevention nut has been proposed.

However, since the detachment-preventing nut according to the above-described prior art is composed of a single part, in order to prevent the fixing nut from being disengaged by the detachment nut in the process of disassembling the fixing nut fastened to the stud bolt using the hammer wrench There is a problem in that the hammer wrench can not be stably supported.

In addition, according to the prior art, it is inconvenient to prepare a release preventing nut having various sizes in accordance with the bolt standard.

The present invention has been proposed in order to solve the problems in the prior art described above and provides a departure prevention device capable of stably supporting a hammer wrench in a process of tightening or loosening a fixing nut, There is a purpose.

In order to accomplish the above object, the present invention provides an upper body including: an upper body having a thread formed on an outer circumferential surface thereof and a fastening protrusion formed on a lower portion thereof; A lower body coupled to a lower portion of the upper body and having a fastening groove for fastening the fastening protrusion formed on an upper surface thereof and a screw groove formed on an upper end of the stud bolt for fastening the stud bolt; A wrench support ring which is fitted around the lower main body and supports the hammer wrench so as to prevent the detachment of the hammer wrench; An elastic spring for pressing the wrench support ring with a predetermined elastic force; And an elastic control ring for screwing the upper body to adjust the elastic pressing force of the elastic spring.

The present invention improves the workability and prevents the occurrence of safety accidents because the wrench can be prevented from being detached in the process of tightening or loosening the nut by using the hammer wrench.

Particularly, the hammer wrench can be stably pressed and supported, and it can be applied to various bolt sizes, thereby showing an advantage that the working efficiency can be maximized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a hemmer wrench departure preventing apparatus according to an embodiment of the present invention; FIG.
Fig. 2 is a cross-sectional structural view of the hemmer wrench deviation prevention device of the present invention. Fig.
3 is an exploded cross-sectional view of the hammer wedge separation prevention device of the present invention.
4 is an exploded side view of the hemmer wrench departure prevention apparatus of the present invention.
Fig. 5 is an enlarged view of part A of Fig. 3; Fig.
6 is a state before mounting the stud bolt of the present invention apparatus.
Fig. 7 is a state in which the stud bolt is mounted on the apparatus of the present invention;
FIG. 8 is a cross-sectional structural view of a release preventing apparatus according to another embodiment of the present invention; FIG.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, a configuration of a hammer wedge separation preventing apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG.

The hammer wedge detachment prevention device in this embodiment has an engagement structure in which a cylindrical upper body 10 and a lower body 20 can be detached from each other and the lower body 20 and the upper body 10 A wrench support ring 30 for preventing the detachment of the hammer wrench 200 and an elasticity adjusting ring 50 for adjusting an elastic pressing force on the wrench support ring 30 are fitted on the outer circumferential surface, (40) is constituted.

That is, the upper body 10 has threads 11 formed on the outer circumferential surface thereof and is capable of screwing with the elastic adjustment ring 50 having the female threaded portion 51 formed on the inner circumferential surface thereof, and the fastening protrusions 12 are protruded The fastening groove 22 of the lower main body 20 is fastened.

A screw groove 21 is formed on the bottom surface of the lower main body 20 so that the stud bolt 100 can be screwed to the upper end of the stud bolt 100, 24 are protruded from the lower portion.

5, a fastening protrusion 13 is provided in the fastening protrusion 12 so as to be resiliently supported by a coil spring 14. A fastening hole 13 is formed in the fastening groove 22 So that the upper body 10 and the lower body 20 can be attached and detached from each other.

The wrench support ring (30) is provided with a guide step (31) for supporting the position of the elastic spring (40) to prevent the flow.

In the drawing, reference numeral 15 denotes a head portion. The outer peripheral surface of the head portion 15, the wrench support ring 30, and the elasticity adjusting ring 50 is subjected to a sliding process for preventing slippage.

6 and 7, the operation and effect of the hammer wand detachment prevention device according to the present invention will be described.

First, the hammer wrench 200 is fastened to the nut 110 coupled to the stud bolt 100, and then the hammer wrench release preventing device of the present invention is coupled to the upper end of the stud bolt 100.

At this time, when the screw groove 21 of the lower main body 20 is engaged with the upper end of the stud bolt 100, the wrench support ring 30 is engaged with the helmer wrench 200 .

By adjusting the height in the vertical direction by turning the elasticity adjusting ring 50, the elastic pressing force applied to the wrench supporting ring 30 by the elasticity spring 40 can be appropriately adjusted.

Particularly, at this time, since the lower main body 20 is kept at a constant spacing so as not to be in close contact with the nut 110, interference with the lower main body 20 is not caused when the nut 110 rises due to disassembly.

When the hammering force is applied to the hammer wrench 200 using the hammer (not shown) in the state where the coupling operation of the hammer wand detachment prevention device is completed, the nut 110 is disassembled from the stud bolt 100 , The hammer wrench (200) is prevented from being detached by the wrench support ring (30).

Since the wrench support ring 30 can move up and down even when the hammer wrench 200 is gradually raised together with the nut 110 in the course of the operation, the hammer wrench 200 is supported at a predetermined pressing force And a rise together will take place.

Therefore, the stable pressurized state of the hammer wrench 200 can be maintained, thereby improving the working efficiency.

8 shows a configuration according to another embodiment of the present invention. A lubricant layer 52 made of Teflon is formed in the elasticity adjusting ring 50 to reduce frictional force with the elastic spring 40, A buffer pad 25 made of urethane material is provided in the groove 21 to relieve an impact with the upper end surface of the stud bolt 100. The buffer pad 25 is elastically supported by a buffer spring 26 .

In this case, the lubricating layer 52 can smoothly and precisely rotate the elastic regulating ring 50 in order to adjust the pressing force of the elastic spring 40.

The cushion pad 25 elastically supported by the cushion spring 26 supports the upper end surface of the stud bolt 100 in the process of mounting the lower main body 20 on the upper end of the stud bolt 100, It is possible to maintain the mounting state and to prevent the generation of the flow of the present invention device due to the external impact.

10: upper body 11:
12: fastening protrusion 13:
14: coil spring 15: head portion
20: Lower main body 21: Screw groove
22: fastening groove 23:
24: Leakage prevention jaw 30: Wrench support ring
31: Guide chin 40: Elastic spring
50: elasticity adjusting ring 51: female thread portion
100: Stud bolt 110: Nut
200: Hammer wrench

Claims (6)

A thread 11 is formed on the outer circumferential surface and a fastening protrusion 12 is protruded from the lower portion of the fastening protrusion 12. The fastening protrusion 12 is provided with a protrusion 13 which is resiliently supported by a coil spring 14 An upper body 10 having a fastening protrusion 23 formed on the fastening groove 22 so that the fastening hole 13 can be engaged with the fastening groove 23;
A fastening groove 22 for fastening the fastening protrusion 12 is formed on the upper surface of the upper body 10 and a screw groove 21) are formed;
A wrench support ring 30 that is fitted around the lower main body 20 to prevent the detachment of the hammer wrench 200;
A guide jaw (31) formed on the wrench support ring (30) and supporting the position of the elastic spring (40) to prevent the movement;
An elastic spring 40 for pressing the wrench support ring 30 with a predetermined elastic force;
The upper main body 10 is screwed to adjust the elastic pressing force of the elastic spring 40 and the thread 11 of the upper main body 10 is screwed into the female screw portion A lubricant layer 52 made of a Teflon material for reducing the friction force with the elastic spring 40 is formed on the lower surface of the stud bolt 100. The upper surface of the stud bolt 100 A buffer pad 25 for relieving an impact of the buffer pad 25, and an elastic control ring 50 elastically supported by a buffer spring 26;
Wherein the hammer wedge detachment prevention device comprises: delete The method according to claim 1,
Wherein the lower main body (20) is provided with a separation preventing jaw (24) protruding downward to prevent the wrench support ring (30) from being detached downward. delete delete delete

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