KR19980013860U - Automatic stage changer of crane hoisting wire - Google Patents

Abstract

The present invention relates to an automatic end changer of the hoisting wire of the crane, in particular fixed to the end of the boom (1) is built so that the fixed shaft 11 is rotatable at the top, and the upper groove (17) on each side lower A fixed plate 19 to be formed; A hook body 13 having a hook 4 fixed to a lower portion thereof, the fixed shaft 12 being rotatably mounted on the stop portion, and a lower groove 18 symmetrically formed on both upper sides thereof; A moving shaft (10) inserted into the upper and lower grooves (17, 18) while being shangdong by wire rope (5) and its own weight; Regarding the automatic end change device of the hoisting wire of the crane, characterized in that the bent portion is composed of upper and lower stoppers (15, 16) which are installed so as to be elastically rotated at the lower end of both sides of the fixed plate 19 and the upper end of both sides of the hook body (13), respectively. will be.

Description

Automatic stage changer of crane hoisting wire

The present invention relates to an automatic end change device for a hoisting crane, in particular, a crane hoisting wire that can automatically convert the number of times the wire rope is wound on the hook according to the weight and the working radius of the hoisting object. It relates to a single converter.

In the conventional crane work, as shown in FIG. 1, the worker hooks the number of turns of the wire rope 5 between the end of the crane boom 1 and the hook body 3 according to the weight of the hoisting object and the working radius. By loosening and adjusting the end of the wire rope hanging on the boom), not only the worker body is troublesome, but also two workers have to work for about 30 minutes, such that the productivity of the work is reduced.

The object of the present invention is to provide an automatic end change device for a hoisting crane, which can improve the productivity of the work by automatically converting the number of times the wire rope is wound on the hook according to the weight of the hoisting material and the working radius. have.

1 is a front part front view (a) and a front part side view (b) showing a step change device of a hoisting wire according to the prior art;

Figure 2 (a) (b) is a front view of the main part showing the operating state of the automatic stage conversion device of the hoisting wire according to the present invention,

3 is a side schematic view (a) and a front schematic view (b) showing an operating state of the automatic end change device of the hoisting wire according to the present invention.

Explanation of symbols on the main parts of the drawings

1: boom 2: sheave

3: hook body 4: hook

5: wire rope 6: hook

8: fixed shaft 9: fixed plate

10: moving shaft 11, 12: fixed shaft

13: hook body 15: upper stopper

16: lower stopper 17: upper groove

18: lower groove 19: fixed plate

20: torsion spring

In order to achieve the above object, the present invention is fixed to the end of the boom is fixed to the fixed shaft is built in the upper end, the fixing plate is formed to be symmetrical upper grooves on both sides of the lower side; A hook body fixed to the lower portion and fixed to the stopper part to be rotatable, and a hook body formed so that lower grooves are symmetrically formed on both upper sides thereof; A moving shaft having both ends inserted into the upper and lower grooves while being moved to Shanghai by wire rope and its own weight; The bent part provides an automatic end change device for a hoisting wire, characterized in that the upper and lower stopper is installed so as to be elastically rotated on both the bottom of both sides of the fixed plate and the top of both sides of the hook body.

The configuration of the present invention will be described with reference to the drawings.

Figure 2 (a) (b) is a front view of the main part showing the operating state of the automatic lifting device of the crane hoisting wire according to the present invention, Figure 3 is an operating state of the automatic cutting machine of the crane hoisting wire according to the present invention Side schematic (a) and front schematic (b) are shown.

First, the square plate is welded to both sides of the end of the boom 1, which is formed of a square beam. The upper groove 17 of the shape is formed, the upper groove is formed to open in the lower direction.

And both ends of the fixed shaft 11 is rotatably coupled to the fixing plate 19 to the upper side of the inner side, and the sheave 2 is fixed to the fixed shaft 11 so as to be deflected to the left, and the fixing plate 19 Both ends of the moving shaft 10 are rotatably inserted in the upper groove 17 formed at the lower portion of the upper side, respectively, and two sheaves 2 are spaced apart from each other while being deflected to the right. It is fixed.

In addition, the hook body 13 has a lower hole 18 formed to be open in the upper direction while being formed in the inclined curved surface on each upper side, the lower surface of the fixing plate 19 by the rise of the wire rope (5) When the upper surface of the hook body 13 is in contact with the lower hole 18 is formed so that the upper side coincides with the lower side of the upper hole 17 of the fixing plate 19.

At this time, both ends of the fixed shaft 12 is rotatably coupled to the inner surface stop portion of the hook body 13, three sheaves 2 are each of the sheaves of the fixed shaft 11, It is fixed to be located under the vertical of the sheave of the moving shaft 10.

On the other hand, the upper and lower stoppers (15, 16) of the bent portion is bent at an acute angle, the bent portion is coupled to enable the elastic rotation by the torsion spring (20) to the lower side of both outer sides of the fixed plate 19 and the hook body (13).

That is, when the fixing plate 19 and the hook body 13 are spaced up and down, the upper and lower stoppers 15 and 16 are separated from the moving shaft 10 having both ends inserted into the upper groove 17 or the lower groove 18. In order to prevent the upper and lower ends around the bent portion is elastically in close contact with the torsion spring 20 on both sides of the fixed plate 19 and the hook body (13).

In addition, the upper and lower stoppers (15, 16) so that when the fixing plate 19 and the hook body 13 is in contact with the upper shaft (17) or lower groove (18) both ends are inserted to facilitate the separation of the moving shaft (10). The upper and lower ends, which are in close contact with both outer sides of the fixed plate 19 and the hook body 13, are pushed by both the fixing plate 19 and the hook body 13 around the bent portion, respectively, and the moving shaft 10 is opened. When the fixing plate 19 and the hook body 13 are spaced up and down again, the upper and lower ends are in close contact with both outer sides of the adjusting plate 19 and the hook body 13, respectively, by the elasticity of the torsion spring 20. do.

Hereinafter will be described the operation of the present invention.

First, when the object to be hoisted is heavy and the working radius is small, as shown in FIG. 2 (a), the moving shaft 10 is inserted into the upper groove 17 of the fixing plate 19, and the wire rope 5 is fixed shaft. After passing through the sieve 2 of (11) and wound around the left sheave of the fixed shaft 12, and again the left sheave of the moving shaft 10, the center sheave of the fixed shaft 12, the right side sheave of the moving shaft, the fixed shaft 12 The end is fixed to the right outer wall of the fixed tube 19 while being wound in turn on the right sheave of.

And when the object to be wound is light and the working radius is large, as shown in FIG. 2 (b), the wire rope 5 is pulled upward and the hook body 13 is raised, and the upper surface of the hook body to be raised is fixed plate. When raised so as to contact the lower surface of the 19, the center sheave and the right sheave of the fixed shaft 12 is in contact with the two sheaves of the moving shaft 10 to raise the moving shaft.

At this time, the upper and lower stoppers (15, 16) is opened to the left and right while the lower end is pressed by the hook body 13 and the fixing plate 19 around the bent portion, both ends of the moving shaft (10) is the weight of the upper hole (17) It is naturally inserted into the lower hole 18 while exiting.

Here, as the wire rope 5 is loosened, the hook body 13 is lowered by its own weight, and the fixing plate 19 and the hook body are connected by two wire ropes.

At this time, while the hook body 13 is spaced apart from the fixing plate 19, the upper and lower lower parts 15 and 16 have upper and lower ends about the bent part by elasticity of the torsion spring 20, respectively, both outer sides of the fixing tube 19 and the hook body. The moving shaft 10, which is in close contact with and is inserted into the lower groove 18, is stably fixed by the lower stopper 16.

The present invention can improve the productivity of the work by automatically converting the number of times the wire rope is wound on the hook according to the weight of the hoisting object and the working radius of the crane work, can prevent the safety accident of the operator in advance, and overload It provides the effect that can prevent the damage of equipment by.

Claims (1)

A fixing plate 19 fixed to the end of the boom 1 so that the fixed shaft 11 is rotatably formed at an upper end thereof, and the upper grooves 17 are symmetrically formed at both lower sides thereof; A hook body 13 having a hook 4 fixed to a lower portion thereof, the fixed shaft 12 being rotatably mounted on the stop portion, and a lower groove 18 symmetrically formed on both upper sides thereof; A moving shaft (10) inserted into the upper and lower grooves (17, 18) while being shangdong by wire rope (5) and its own weight; Automatic bending device for crane hoisting wire, characterized in that the bent portion is composed of upper and lower stoppers (15, 16) are installed so as to be elastically rotated at the lower end of both sides of the fixed plate (19) and the upper end of both sides of the hook body (13), respectively.