KR200260903Y1 - Hoist hook anti-rotation mechanism - Google Patents

Abstract

The present invention is to prevent the hook rotation of the improved hoist to prevent the safety accident by minimizing the problems such as the collision of the object to the peripheral equipment due to the rotation of the hook when transporting it to the hook of the hoist It is about a mechanism.

The present invention is a device for preventing the hook of the hoist is rotated during the lifting and lowering, is attached to the lower surface of the hook block, the center is formed with a hole through which the upper end of the hook, the lower end is equipped with a nut member Fixed plate; A drive mechanism having a screw shaft for screwing into a nut member of the fixed plate, and a propelling plate rotatably mounted at both ends of the screw shaft with inclined surfaces on both sides thereof; The inclined surface corresponding to the inclined surface of the propulsion plate is formed on one side, rotatably mounted on the lower end of the fixed plate, and on the other side to form a guide groove inserted into the guide pin protruding downward from the fixed plate, while facing each other A tightening mechanism having a pair of clamp plates having a concave surface; And a spring configured to tighten the clamp plate to each other to concave surfaces to tighten the upper end of the hook.

Description

Hoist hook anti-rotation mechanism

The present invention relates to a mechanism that prevents the hoist hook from being rotated during lifting and lowering. More specifically, when the hook is transported by hooking the hoist hook, the conveying object collides with the peripheral equipment due to the rotation of the hook. The hook rotation prevention mechanism of the hoist improved to minimize the problems, such as to prevent the safety accident in advance.

In general, the hoist (hoist) is a mechanical device for lifting and transporting the conveyed material, has a wire rope wound by a winch, and a hook block is mounted at the bottom of the wire rope, and a hook is mounted at the bottom of the hook block. Have In the hoist as described above, the conventional hook 100 is rotatably mounted with respect to the hook block 110 as shown in FIG. 1, which hooks the hook 100 to the lower end of the hook block 110 of the hook block 110. The top of is inserted and fixed as the nut 115 in the interior of the locking jaw (112). Therefore, the conventional hook 100 as described above is free to rotate with respect to the hook block 110 when the conveyance 140 is walked on the hook 100 and is carried by the rotation of the conveyance 140. As the hook 100 is freely rotated on the hook block 110, the conveyance 140 is severely rotated.

In such a case, if the conveyed material is long, the conveying material will have a problem in that it will hit the surrounding equipment in the conveying process and thus cause damage of the conveyed material as well as the surrounding equipment. Therefore, it is possible to minimize the risk of safety accidents and to achieve safe work only when the transport is rotated as much as possible during the transport operation of the hoist. Therefore, in order to prevent rotation of the conveyed object, a separate work force is required, such as a separate worker grabbing and fixing the conveyed object while moving according to the movement of the hoist.

The present invention is to solve the conventional problems as described above, the purpose is to carry the transport by hooking the transport to the hook of the hoist, by minimizing the problems such as the impact of the transport to the peripheral equipment due to the rotation of the hook It is to provide a hoist anti-rotation mechanism of the hoist that can prevent safety accidents in advance and improve work productivity by eliminating the need for a separate work force.

1 is a block diagram showing a hook according to the prior art;

Figure 2 is an exploded perspective view showing a hook rotation prevention mechanism according to the present invention;

3 is a side view of the hook anti-rotation mechanism according to the present invention;

Figure 4 is an operating state of the hook rotation prevention mechanism according to the present invention.

Explanation of symbols on the main parts of the drawings

10 ..... mounting plate 12 ..... hole

16 ..... Nut member 20 ..... Screw shaft

26 ..... thrust plate 26a .... slope

30 ..... Fastener 32 ..... Clamp plate

34 ..... Hinge 36 ..... Guide Pin

40 ..... Concave 100 .... Hook

110 .... Hook Block

In order to achieve the above object, the present invention, in the device for preventing the hook of the hoist is rotated during the lifting and lowering, is attached to the lower surface of the hook block, the center is formed with a hole through which the upper end of the hook A fixing plate having a nut member mounted at one lower end thereof; A drive mechanism having a screw shaft for screwing into a nut member of the fixed plate, and a propelling plate rotatably mounted at both ends of the screw shaft with inclined surfaces on both sides thereof; The inclined surface corresponding to the inclined surface of the propulsion plate is formed on one side, rotatably mounted on the lower end of the fixed plate, and on the other side to form a guide groove inserted into the guide pin protruding downward from the fixed plate, while facing each other A tightening mechanism having a pair of clamp plates having a concave surface; And a spring configured to tighten the clamp plate to each other to concave surfaces to tighten the upper end of the hook.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The hook rotation prevention mechanism 1 of the hoist according to the present invention is to prevent the hook 100 of the hoist from being rotated while being raised and lowered. The present invention has a fixing plate 10 is attached to the lower surface of the hook block 110, the fixing plate 10 is formed with a hole 12 through the top of the hook 100 in the center, a plurality of bolts It is fixed to the hook block 110 by (14), the nut member 16 is vertically mounted at one lower end. In addition, a driving mechanism 22 having a screw shaft 20 screwed to the nut member 16 of the fixing plate 10 is located, and the driving mechanism 22 is a propulsion plate at the tip of the screw shaft 20. (26) is mounted, the propulsion plate 26 is made of a structure having an inclined surface (26a) on both sides. The screw shaft 20 and the propulsion plate 26 are rotatably mounted to each other, and the upper surface of the propulsion plate 26 is maintained in contact with the lower surface of the fixed plate 10, so that an operator When the screw shaft 20 is rotated, the screw shaft 20 moves forward and backward with respect to the nut member 16 while moving forward and backward.

On the other hand, a pair of inclined surface 32a corresponding to the inclined surface 26a of the propulsion plate 26 is formed at one side in front of the propulsion plate 26 and rotatably mounted on the lower end of the fixed plate 10, respectively. The fastening mechanism 30 having the opposite clamping plate 32 is mounted, and the clamping plate 32 of the tightening mechanism 30 is rotatable as the hinge 34 to the fixing plate 10, respectively. To be fixed. And, the other side of the clamp plate 32 is formed with a guide groove 38 to be inserted into the guide pin 36 protruding downward from the fixing plate 10, between the guide groove 38 and the hinge 34 Each of the concave surfaces 40 facing each other is formed. In the concave surface 40 is the center thereof coincides with the central hole 12 of the fixing plate 10 is that the upper end of the hook 100 in the center of the concave surface (40).

Then, the spring 45 is configured to tighten the clamp plate 32 to each other so that the concave surfaces 40 tighten the upper end of the hook 100, and the spring 45 is an inclined surface of the clamp plate 32. Both ends are fixed to the lower side protrusion 47 on which the 32a is formed, thereby pulling the one side of the clamp plate 32, so that the concave surfaces 40 are opened to each other. Therefore, when the propulsion plate 26 is advanced toward the inclined surface 32a side of the clamp plate 32 to be spaced between the inclined surfaces 32a, the concave surfaces 40 are narrowed to each other and positioned between the concave surfaces 40. It is configured to tighten the top of the hook (100).

Hook rotation prevention mechanism (1) of the present invention configured as described above is the operator to the screw shaft 20 back from the nut member 16, the propulsion plate 26 is the inclined surface (32a) of the clamp plate (32) When pulled out from, the spring 45 mounted on the clamp plate 32 pulls one side of the clamp plate 32 so that the upper end of the hook 100 is released between the concave surfaces 40 of the clamp plate 32. do. That is, the concave surface 40 of the clamp plate 32 is not tightened with each other, so that the hook 100 can be freely rotated with respect to the hook block 110 as in the prior art.

However, in contrast to the above, when the operator rotates the screw shaft 20 to advance the propulsion plate 26, both inclined surfaces 26a of the propulsion plate 26 are applied to the inclined surface 32a of the clamp plate 32. The spring 45 is tensioned by being brought into close contact with one side of the clamp plate 32, and the recess 40 of the clamp plate 32 is narrowly spaced between the hinge 34 axis and the gap therebetween. It is to fix the top of the hook (100). In the above process, the clamp plates 32 are guide pins 36 inserted into the guide grooves 38 so that the rotation of the clamp plates 32 is accurately maintained, and the hooks positioned between the recesses 40 ( The upper end of the 100 is to prevent the rotation by the tightening force of the clamp plate (32).

When the free rotation of the hook 100 relative to the hook block 110 is limited by the present invention as described above, the wire rope 150 is twisted during conveyance of the conveying object 140 caught by the hook 100 Although this may occur, the twist of the wire rope 150 is easily fixed by the tension of the wire rope 150, so that excessive rotation of the conveyance 140 is prevented.

Thus, the conveyance 140 can be transported stably.

According to the present invention as described above, when carrying the conveying material 140 to the hook 100 of the hoist to carry it, the rotation of the hook 100 relative to the hook block 110 is effectively prevented of the hook 100 Due to the rotation, the conveyance 140 is to minimize the problem, such as a collision with the peripheral equipment. Therefore, it is possible to prevent safety accidents related to conveying work in advance, and additional work force is not required, thereby improving the practical productivity to improve work productivity.

Claims (1)

In the device for preventing the hoist hook 100 is rotated during the lifting and lowering, it is attached to the lower surface of the hook block 110, the center is formed with a hole 12 through which the upper end of the hook 100 A fixing plate 10 equipped with a nut member 16 at one lower end thereof; The screw shaft 20 is screwed to the nut member 16 of the fixing plate 10, and the propulsion plate 26 having the inclined surface 26a on both sides is rotatably mounted at the front end of the screw shaft 20. Drive mechanism 22; The inclined surface 32a corresponding to the inclined surface 26a of the propulsion plate 26 is formed at one side, and is mounted to be rotatable at the lower end of the fixed plate 10, and the other side protrudes downward from the fixed plate 10. A tightening mechanism 30 having a pair of clamp plates 32 forming guide grooves 38 inserted into the guide pins 36 and forming concave surfaces facing each other; And a spring (45) configured to tighten the clamp plate (32) with each other so that the concave surfaces (40) tighten the upper end of the hook (100).