KR20160111728A

KR20160111728A - Screw clamp

Info

Publication number: KR20160111728A
Application number: KR1020150036771A
Authority: KR
Inventors: 김동기
Original assignee: 김동기
Priority date: 2015-03-17
Filing date: 2015-03-17
Publication date: 2016-09-27
Also published as: KR101704478B1

Abstract

The present invention relates to a screw clamp. The screw clamp includes: a clamp body having a vertical board type body part, a lower support part extended to a lower part of the body part vertically and integrally, and a staple-shaped aperture which is extended to an upper part of the body part vertically and integrally and comprises an upper support part in parallel with the lower support part, and into which a fixed object is inserted; a lower fastening hole formed to penetrate the lower support part up and down; an upper assembly hole which penetrates the upper support part while having multiple protrusions; a screw bolt which is fastened to the lower fastening hole through a screw for an upper part thereof to appear or be absent from the aperture; a shackle shaft and a jaw cam which are arranged to be held on the protrusion while being assembled at the upper assembly hole from bottom to top; and a shackle fastened to the shackle shaft exposed to an upper part of the upper assembly hole. A flat lower jaw is fixed to an upper plane of the screw bolt by a bearing while being able to rotate. A flat upper jaw is fixed to a lower plane of the jaw cap by a bearing while being able to rotate. The shackle shaft and the jaw cap are separated so that the shackle shaft can rotate.

Description

SCREW CLAMP

The present invention relates to a screw clamp, and more particularly, to a non-ferrous metal material (stainless steel, aluminum, or the like) used for producing a plant of LNG wire and various chemical tanks, so that the shackle can be rotated 360 ° So that the workability is remarkably improved.

Generally, a screw clamp is used to transfer iron plate materials such as large or heavy steel beams or steel plates to a crane at a shipyard or a construction site, or a chain block for assembling steel structures of shipbuilding, Or a lever of a lever block.

Such a screw clamp has various types according to the use. For example, the present applicant has patented and registered a number of screw clamps having various technical characteristics according to various kinds of applications. For example, Korean Patent No. 0394167, Registered Patent No. 0540139 , Registered patent No. 1044278, registered patent No. 1002943, and the like.

However, the screw clamps used to transport or grip the steel plate used in the drying of the LNG wire or the chemical tank, especially of the screw clamp, should be specially manufactured so as not to leave a mark on the fixed part of the steel plate material.

This is because there is a high risk of explosion as the internal resistance (internal pressure) of the tank concentrates on the bite of the structure, which is subject to pressure fluctuations due to volume expansion.

Therefore, the screw clamps used for this purpose are preferably made as flat as the ends of the clamping screw bolts.

1, the upper end of the screw bolt 10 is in contact with the steel plate material directly, and the upper end of the screw bolt 10 is in contact with the upper end of the clamp bolt 10, Since the grip portion 20 is also rigid and fixed, it is difficult to align the steel plate members with each other when the steel plate members are clamped by the clamp body B so that the thick steel plate members are butt-welded to each other. There are disadvantages.

This is caused by the characteristics of the upper end of the screw bolt 10 fixed to the steel plate member to be flowed and the grip portion 20 of the clamp body B.

In addition, even in the case of the eye hook 30 provided at the upper end of the clamp main body B for hooking the cranes to the cranes, since the hooks 30 are integrally fixed to the clamp main body B, The wire is twisted when the clamp body B is rotated to adjust the position. This is because the eye hook 30 has no fluidity, and this twist is naturally caused by a force for returning the wire back to the original position While the clamp body B is rotated in the opposite direction again. This results in a problem that the iron plate member can not be accurately positioned.

Therefore, a large number of workers are required to hold the iron plate members standing around, which leads to a risk that the worker is overworked due to the safety of the operator, and the work period is extended.

In addition, the above-described fixed-type holding structure generates an unexpected dragging trace such as a skid mark in the case of slip of the iron plate member. Therefore, development of a technique for preventing this is an urgent problem that must be excluded when manufacturing an LNG carrier or a chemical tank.

The present invention has been made in order to overcome the above-mentioned problems of the prior art as described above. It is an object of the present invention to provide a non-ferrous metal material (stainless steel, aluminum, etc.) used for manufacturing LNG carriers and various chemical tanks, The main object of the present invention is to provide a screw clamp capable of rotating a shackle using a crane wire gauge 360 ° as well as a gripping part of a metal material to prevent slippage, thereby eliminating the occurrence of skid marks and significantly improving workability.

In order to achieve the above-mentioned object, the present invention provides a method of manufacturing an endoscope, comprising: a body having a vertical plate shape; a lower end supporting part vertically extending integrally with a lower end of the body; A clamp body having a 'C' -shaped opening formed by a parallel upper end support and inserted therein; A lower fastening hole formed vertically through the lower support portion; An upper assembling member penetrating the upper support portion and having a plurality of jaws; A screw bolt screwed into the lower fastening hole and having an upper end protruding from the opening; A shackle shaft and a jaw cap assembled from the lower portion to the upper portion of the upper assembling member so as to be respectively engaged with the jaws; And a shackle fastened to the shackle shaft exposed at an upper portion of the upper assembly hole, the screw clamp comprising: The upper surface of the screw bolt is fixed with a bearing so that a magnetic lower jig is rotated; A lower end surface of the jaw cap is fixed with a bearing so that the upper jaw is rotated; Wherein the shackle shaft and the jaw cap are separated from each other so that the shake shaft is rotatably rotated.

At this time, a lower bearing groove is formed on the upper surface of the screw bolt; A lower bearing in the form of a ball bearing is press-fitted into the lower bearing groove; A lower jaw protruding from the lower end surface of the lower jaw; The lower jaw is engaged by the lower snap ring so as to penetrate through the lower bearing and then be released from the lower bearing; An upper bearing groove is formed on the lower surface of the jaw cap; An upper bearing in the form of a ball bearing is press-fitted into the upper bearing groove; An upper jaw protruding from an upper end surface of the upper jaw; The upper jaw may be fastened by an upper snap ring so as to pass through the upper bearing and then not be released from the upper bearing.

Further, the cushion pad may be further fixed to the inner side surface of the body portion so that the cushion pad can be detachably attached thereto.

Preferably, the jaw cap is assembled in a state of being inserted from the upper end to the lower end of the shackle shaft, and the upper bearing is press-fitted into the lower opening portion of the jaw cap.

According to the present invention, since not only the gripping portion where the metal material is engaged but also the shackle which is used to wire the wire to the crane, the wire does not twist or twist even if the metal material rotates, Control is possible, workability is increased, work time is shortened, and safety of work is improved above all.

1 is an exemplary cross-sectional view of a screw clamp according to the prior art;
Figure 2 is an exemplary perspective view of a screw clamp according to the present invention.
3 is an exploded perspective view of a screw clamp according to the present invention.
4 is an exemplary cross-sectional view of a screw clamp according to the present invention.
Figure 5 is an exemplary front view of a screw clamp according to the present invention.
FIG. 6 is a photograph showing the occurrence of tooth marks on the front and back surfaces of a metal member when using a screw clamp according to the present invention, in comparison with a conventional product.

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

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

2 to 3, the screw clamp according to the present invention includes a clamping body 100. As shown in FIG.

The clamp body 100 is a substantially 'C' shaped member having an opening 110 opened at one side thereof and includes a vertical plate-like body portion 102 and a body portion 102 formed integrally with the lower end of the body portion 102 And an upper support part 106 extending vertically and integrally with the upper end of the body part 102 and parallel to the lower support part 104. The opening part 110 is formed with a metal plate And the inserted deflector is pressed and fixed by the lower jaw J1 and the upper jaw J2 to be described later.

At this time, the lower jaw J1 and the upper jaw J2 are flat jaws having a flat surface.

A cushion pad 108 made of a urethane material is screwed to the inner side surface of the body portion 102 to prevent friction between a clamping member such as a metal plate (metal member such as stainless steel or aluminum) and a steel clamp, Thereby preventing scratches.

In this case, since the cushion pad 108 is screwed, it can be used for replacement.

The lower support part 104 of the clamp body 100 is vertically penetrated to form a lower fastening hole 120. The upper support part 106 at a position opposite to the lower fastening hole 120 is provided with an upper The assembly hole 130 is formed.

Here, the inner diameter of the lower fastening hole 120 is formed with threads for securing a fixing force. However, it is not necessary to form a screw thread because the upper fastening hole 130 does not need a fastening force.

In addition, a screw bolt 200 is screwed to the lower fastening hole 120 so as to be able to protrude and retract into the opening 110 through the lower fastening hole 120. In the upper fastening hole 130, The parts coupled with the jaw J2 are assembled.

At this time, the screw bolt 200 is provided with a handle 210 at its lower end, and a fastening thread 220 is formed on the body of the screw bolt 200 in the longitudinal direction, A tightening function of protruding to the opening 110 according to the direction of rotation of the handle 210 and a releasing function of separating from the opening 110 can be selectively performed.

In addition, a lower bearing groove 230 having a predetermined depth is formed in the upper end surface of the screw bolt 200 and a lower bearing 240 is press-fitted in the lower bearing groove 230 in a forced fitting manner. The lower bearing 240 has a ball bearing configuration and a through hole formed at the center thereof.

A lower jogger 250 protrudes from a center of a lower end surface of the lower jaw J1 and the lower jogger 250 passes through a through hole formed at the center of the lower bearing 240, J1 through the lower retaining ring 260 so as to be freely rotatable by 360 without detaching from the lower bearing 240. [

Here, the assembly will be such that the lower jaw J1 is first assembled to the lower bearing 240 and then the assembly is fitted into the lower bearing groove 240. [

In this way, the upper end of the screw bolt 200 can constitute a surface-permeable lower jaw J1 having fluidity.

3, upper and lower jaws 132 and 134 are formed in a plurality of steps and a shakla shaft 300 is inserted from the lower side of the upper assembly hole 130 toward the upper side.

At this time, bolt holes 302 penetrating vertically in the longitudinal direction are formed on the upper end of the shackle shaft 300 and latching portions 304 are formed on the lower end of the bolt hole 304 to be hooked on the uppermost jaw of the jaws 132, It is inserted so that it can not escape.

The fastening bolts BT are inserted into the bolt hole 302 while the shackle shaft 300 is disposed between the lower fastening portions 410 of the shackle 400. At this time, And the shackle 400 is fixed to the shackle shaft 300 by fastening a fastening nut NT to the end of the shackle 400.

Therefore, the shackle 400 is rotatable about the fastening bolt BT.

The upper surface of the jaw cap 310 is closely attached to the lower end surface of the shackle shaft 300. The jaw cap 310 is engaged with the lower jaw of the jaws 132 and 134 So that it is inserted into the upper assembly hole 130.

In this case, the jaw cap 310 is formed in a lower open shape, and a ring groove 314 is formed around the lower outer peripheral surface, and a cap fixing ring 320 is fitted in the ring groove 314.

That is, the cap retaining ring 320 is a kind of snap ring, which is resiliently assembled to the ring groove 314 and is simultaneously engaged with a groove (not shown) formed on the inner peripheral surface of the lower end of the upper attaching hole 130, 310 are not removed.

The upper jaw protrusion 340 protrudes from the upper jaw J2 in the same shape as the lower jaw protrusion 250 and the upper jaw protrusion 340 penetrates the upper bearing 330 And is fixed by the upper snap ring 350 so as not to be separated from and separated from the upper bearing (330).

At this time, when the upper jaw protrusion (340) is assembled, the upper jaw (350) is inserted into the end portion passing through the upper end of the jaw cap (310) So that it can be rotated.

(Not shown) may be provided between the jaw cap 310 and the shake shaft 300 when the jaw cap 310 is fitted to the lower end of the shake shaft 300 and fitted into the jaw cap 310. [ The upper bearing 330 and the upper jaw J2 are fixed in a state where the upper bearing 330 and the upper jaw J2 are further provided. The shackle shaft 300 may have a more stable and more stable rotation structure than the shackle shaft 300.

In addition, in another modification, when the upper end of the upper jaw protrusion 340 fitted with the upper snap ring 350 is configured to be fitted in the center of the lower end surface of the shake shaft 300, the rotation center of the shake shaft 300 is generated Thereby contributing to flow prevention and stable driving.

In addition, the upper end of the shackle shaft 300 is configured so that the spacers S are fitted to eliminate the clearance caused by the jaws 132.

Since the upper jaw J2 and the lower jaw J1, which are fitted with the metal plate, have such a configuration, since there is a clear difference that the tooth marks are hardly generated compared to the conventional one as shown in Fig. 6, do.

In addition, since the upper jaw J2 and the lower jaw J1 are rotatable by themselves, there is little rotational resistance against the metal sheet, so that no slippage occurs, so that the metal sheet can be fixed and fixed with higher quality .

Particularly, according to the present invention, since the shackle shaft 300 can rotate 360 degrees in a direction orthogonal thereto without being restricted in rotation only in the radial direction of the fastening bolt BT which is the rotation shaft of the shackle 400, It is possible to stably and precisely control the position of the crane wire because the crane wire can sufficiently absorb and absorb the load or torsion of the crane wire.

100: clamp body 200: screw bolt
300: shackle shaft 400: shackle

Claims

And a lower support portion extending vertically and integrally with the lower end of the body portion and an upper support portion extending vertically and integrally with the upper end of the body portion and being parallel to the lower support portion, A clamp body having an opening in the form of a '; A lower fastening hole formed vertically through the lower support portion; An upper assembling member penetrating the upper support portion and having a plurality of jaws; A screw bolt screwed into the lower fastening hole and having an upper end protruding from the opening; A shackle shaft and a jaw cap assembled from the lower portion to the upper portion of the upper assembling member so as to be respectively engaged with the jaws; And a shackle fastened to the shakla shaft exposed at an upper portion of the upper assembly hole, the screw clamp comprising:
The upper surface of the screw bolt is fixed with a bearing so that a magnetic lower jig is rotated;
A lower end surface of the jaw cap is fixed with a bearing so that the upper jaw is rotated;
Wherein the shackle shaft and the jaw cap are separated from each other so that the shake shaft is rotated.

The method of claim 1,
A lower bearing groove is formed on an upper surface of the screw bolt; A lower bearing in the form of a ball bearing is press-fitted into the lower bearing groove; A lower jaw protruding from the lower end surface of the lower jaw; The lower jaw is engaged by the lower snap ring so as to penetrate through the lower bearing and then be released from the lower bearing; An upper bearing groove is formed on the lower surface of the jaw cap; An upper bearing in the form of a ball bearing is fixed to the upper bearing groove; An upper jaw protruding from an upper end surface of the upper jaw; Wherein the upper jaw protector is configured to pass through the upper bearing and jaw cap, and then be coupled to the upper snap ring from an upper portion of the jaw cap so as not to be separated and separated.

The method according to claim 1 or 2,
And a cushion pad is further fixed to an inner side surface of the body part so that the cushion pad can be detachably attached thereto.

The method of claim 2,
Wherein the jaw cap is assembled in a state of being inserted from the upper end to the lower end of the shakla shaft, and the upper bearing is press-fitted into the lower opening portion of the jaw cap.