KR20120080505A

KR20120080505A - Safety apparatus of a crane hook

Info

Publication number: KR20120080505A
Application number: KR1020110002012A
Authority: KR
Inventors: 김대중
Original assignee: 김대중
Priority date: 2011-01-07
Filing date: 2011-01-07
Publication date: 2012-07-17

Abstract

The present invention completely removes the inconvenience of the operator when hooking and removing the wire rope to the hook of the crane, and the wire rope to hang the wire rope so that the wire rope does not escape from the hook while the load is applied to the convenience and safety Provides a safety hook device for the crane hook that can be increased.

Description

Safety hook of crane hook {Safety apparatus of a crane hook}

The present invention relates to a safety hook device of the crane hook to prevent the wire rope from coming off in the state that the wire rope is hooked to the hook of the crane, and more particularly, it is easy to hook and pull out the wire rope to the hook of the crane and A safety hook device for a crane hook that is configured to prevent the wire rope from detaching from the hook while the hanging rope is loaded.

Currently, various types of cranes are used in industrial sites to lift and move heavy materials.

One example of such a crane is shown in Figures 1 to 3, the lower end is provided with a hook (1) for lifting the heavy material by the wire rope. The hook 1 is provided with a safety loop device for preventing detachment of the wire rope 2.

The hook mechanism of this hook forms a through hole 3 in the protrusion 1a projecting inwardly on the upper side of the hook 1, and is secured with a pin 6 (bolts and nuts) in the through hole 3. It is configured to couple and secure the ring 4 and the spring 5.

The safety hook device of the conventional hook configured as described above has an end opposite to the engaging portion of the safety hook 4 rotatably fixed by the pin 6 so as to contact the end of the hook 1 by the elastic force of the spring 3. The opening of the hook 1 is blocked.

With the safety hook 4 blocking the inlet of the hook 1 as described above, the worker binds the material to be moved with the wire rope 2 and pushes the wire rope 2 into the inlet of the hook 1 so that the spring ( 3) is compressed, the safety ring (5) is pushed into the wire rope (2) to the inside of the inlet of the hook (1), then the spring (3) is extended, the safety ring (5) is pushed out of the hook The entrance of (1) is blocked. Accordingly, since the safety ring 5 is locked to the hook 1 when the material is moved by the crane, the wire rope 2 is not separated from the hook 1.

In this way, after moving the material by the crane in the state in which the safety ring 5 is locked, the worker presses the safety ring 5 with one hand to open the inlet of the hook 1 with the other hand. ) Out of the entrance of the hook (1) has to be cumbersome.

As described above, the safety hook device of the conventional crane hook has a problem that the operator is inconvenient when the wire rope 2 is hooked to the hook 1 or is detached from the hook.

As a result, most work sites remove safety hooks of crane hooks and work with safety hooks only when there are safety checks.

Therefore, there is a demand for the development of a safety hook device for a new crane hook that can completely eliminate the inconvenience of the operator when the wire rope 2 is hooked to the hook 1 or detached from the hook.

Accordingly, the present invention is devised to solve the above problems of the prior art and to meet the above conventional requirements, to completely eliminate the inconvenience of the operator when hanging the wire rope to the hook of the crane, and remove the wire rope An object of the present invention is to provide a safety hook device for a crane hook that can increase the convenience and safety of the work by preventing the wire rope from being detached from the hook while the hanging rope is loaded.

In order to achieve the above object, in the safety hook device of the crane hook according to the present invention, a through hole is formed in the inner lower part of the hook, and a through hole is formed in the protrusion projecting inward on the upper side of the hook. The safety ring is rotatably fixed to the hole by a pin, and the housing is fixedly coupled to the hook so as to surround the lower part of the hook including an opposite side to the inlet of the hook and a lower end of the through hole. There is formed a hole forming a substantially U-shaped including a through hole of the hook, a flexible rod is inserted into the through hole of the hook and the hole of the housing, one side of the flexible rod is the outside of the through hole of the hook Exposed at the end of the wire rope is fixed to the end of the wire rope seating and the hook pipe Between the lower part of the ball is provided with a spring fitted with the flexible rod in the center, one side of the flexible rod is coupled to one end of the ring movement rod through the hinge, the ring movement rod is formed in a substantially "c" shape The embedded part is hinged to one side of the flexible rod, and the open end is coupled to both sides of the front part of the safety ring through the hinge, and the rotational axis in a predetermined portion of the hook moving rod in contact with the side of the hook It is characterized in that coupled to the side of the hook.

According to the present invention configured as described above, to completely remove the inconvenience of the operator when hanging the wire rope to the hook of the crane, and work so that the wire rope is not separated from the hook in the state that the load is placed on the rope by hanging the wire rope The convenience and safety of the can be increased.

1 is a view showing a typical crane configuration by way of example.
Figure 2 is an exploded perspective view of the safety hook device of a conventional crane hook.
3 is a state diagram used in the conventional crane hook.
Figure 4 is a perspective view showing a safety hook device of a crane hook according to the present invention, a view of the wire hook is not caught in the crane hook.
Figure 5 is a cross-sectional view showing a safety hook device of the crane hook according to the present invention, a view of the wire rope is not caught in the crane hook.
Figure 6 is a perspective view showing a safety hook device of the crane hook according to the present invention, a view of the wire rope is caught on the crane hook.
7 is a cross-sectional view showing a safety hook device of a crane hook according to the present invention, which is a view of the wire rope is caught in the crane hook.

Hereinafter, a safety hook device of a crane hook according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

4 and 5 are a perspective view and a cross-sectional view showing a safety hook device of the crane hook according to the present invention when the wire hook is not caught in the crane hook, Figures 6 and 7 are the present invention when the wire rope is caught in the crane hook Perspective and sectional view of the safety hook device of the crane hook according to the.

As shown in the figure, in the safety hook device of the crane hook according to the present invention, a through hole 12 is formed in the inner lower portion of the hook 10, and protrudes inward to the upper side of the hook 10; A through hole is formed in the projection 11a, and the safety ring 20 is rotatably fixed to the through hole by a pin 14 (bolt and nut), and opposite to the inlet of the hook 10. The housing 30 is fixedly coupled to the hook 10 by, for example, a screw so as to surround a lower portion of the hook 10 including the lower end of the through hole 12.

In the housing 30, a hole 32 including a through hole 12 of the hook 10 is formed to form an approximately U shape, and the through hole 12 and the housing of the hook 10 are formed. The flexible rod 34 is inserted into the hole 32 of the 30. This flexible rod 34 is made of a material having excellent strength having a bending property.

One side of the flexible rod 34 is exposed to the outside of the through hole 12 of the hook 10 and the wire rope seating portion 10 is fixed to the end thereof, the wire rope seating portion 10 Between the through hole 12 of the hook 10 and the spring 37 is fitted with the flexible rod 34 in the center thereof.

One side of the flexible rod 34 is coupled via a hinge 38 to one end of the ring movement rod 40.

The ring moving rod 40 is formed in a substantially "c" shape, the embedded portion is hinged to one side of the flexible rod 34, the open end is hinged on both sides of the front portion of the safety ring 20 Are coupled via (22). In addition, the predetermined portion in contact with the side of the hook 10 in the ring movement rod 40 is coupled to the side of the hook 10 by a rotation shaft 42.

According to the present invention configured as described above, when the wire rope is not seated on the wire rope seating portion 36 and no load is applied thereto, as shown in FIGS. 4 and 5, the wire rope is caused by the elastic force of the spring 37. The mounting portion 36 is pushed up so that the flexible rod 34 protrudes upward from the inside of the hook 10. Accordingly, the other end of the flexible rod 34 hinged to the ring moving rod 40 is lowered, so that the ring moving rod 40 is rotated counterclockwise around the rotation shaft 42 so that the safety ring 20 is provided. As the safety ring 20 is opened by rotating upward, the inlet of the hook 10 is opened.

In this way, the safety ring 20 is opened to bind the material to be moved by the worker while the inlet of the hook 10 is opened with a wire rope 50, and the wire rope 50 is connected to the wire rope through the inlet of the hook 10. When the crane is operated in a state seated on the seating portion 36, the wire rope seating portion 36 is loaded by the wire rope 50 and the moving material. 6 and 7, the wire rope seat 36 is pushed downward by the load, the spring 37 is compressed, and the flexible rod 34 is a through hole 12 of the hook 10. As shown in FIG. It is pushed toward). Accordingly, the other side of the flexible rod 34 hinged to the ring moving rod 40 is raised so that the ring moving rod 40 is rotated clockwise around the rotation shaft 42 so that the safety ring 20 is As the safety ring 20 is closed by rotating downward, the inlet of the hook 10 is locked.

Therefore, when the material is moved by the crane, so that the safety ring 20 is locked to the hook 10, the wire rope 50 from the hook 10 will not be separated.

Thereafter, when the movement of the material is completed by the crane and the material is lowered to the floor, the load applied to the wire rope seating portion 36 is removed, and as shown in FIGS. 4 and 5, the elastic force of the spring 37 The wire rope seating portion 36 is pushed up so that the flexible rod 34 protrudes upward from the inside of the hook 10. Accordingly, the other end of the flexible rod 34 hinged to the ring moving rod 40 is lowered, so that the ring moving rod 40 is rotated counterclockwise around the rotation shaft 42 so that the safety ring 20 is provided. As the safety ring 20 is opened by rotating upward, the inlet of the hook 10 is opened. In this state, the operator is to just detach the wire rope 50 from the hook (10).

As described above, according to the present invention, when the wire rope is hooked to the hook of the crane, the worker's inconvenience is completely eliminated, and the wire rope is hooked to prevent the wire rope from detaching from the hook while the rope is loaded. The convenience and safety of the can be increased.

On the other hand, the present invention is not limited to the above specific embodiments, but can be modified and modified in various ways without departing from the gist of the present invention. It will be obvious that such modifications and variations are included in the appended claims.

10 hook 12 through hole
20: safety ring 30: housing
32: hole 34: flexible rod
36: wire loop seat 37: spring
40: ring moving rod

Claims

A through hole is formed in the inner lower part of the hook, and a through hole is formed in the protrusion projecting inwardly on the upper side of the hook. The housing is fixedly coupled to the hook so as to surround the lower portion of the hook including the opposite side and the bottom of the through hole,
Inside the housing is formed a hole forming a substantially U-shaped including a through hole of the hook, a flexible rod is inserted into the through hole of the hook and the hole of the housing,
One side of the flexible rod is exposed to the outside of the through hole of the hook and the wire rope seating part is fixedly installed at the end, between the wire rope seating portion and the bottom of the through hole of the hook, the flexible rod is in the center Fitted spring is installed,
One side of the flexible rod is coupled to one end of the ring movement rod, the ring movement rod is formed in a substantially "C" shape, the studded portion is hinged to one side of the flexible rod, the open end The safety hook of the crane hook is coupled to both sides of the front of the safety ring through the hinge, the predetermined portion in contact with the side of the hook in the hook moving rod is coupled to the side of the hook by a rotation shaft Device.