KR20150104369A

KR20150104369A - Crane safe hook

Info

Publication number: KR20150104369A
Application number: KR1020140026024A
Authority: KR
Inventors: 송창환
Original assignee: (주) 한울특수공업
Priority date: 2014-03-05
Filing date: 2014-03-05
Publication date: 2015-09-15

Abstract

The present invention provides a crane safety hook having a safety ring at a mouth of the hook to be rotated. The crane safety hook includes: the safety ring wherein a spiral spring is provided for an axial pin to apply an elastic force to the inside of the hook; a concave grove formed along the center of the inner side of the hook and having a predetermined length; a through-hole formed on the top of the hook in a diagonal direction and having a predetermined length; and a wire of which one end is fixated to the outer center of the safety ring and the other end passes through the through-hole to be fixated to the tip of the hook. According to the present invention, the safety ring at the mouth of the hook to be rotated applies an elastic force to the inside of the hook and is rotated to the outside of the hook by a rope engaged with the inside of the hook, thereby allowing the engagement and detachment of the hook with or from the rope and preventing an escape of the rope from the inside of the hook.

Description

Safety hook for crane {CRANE SAFE HOOK}

More particularly, the safety hook rotatably formed at the entrance of the hook is urged in an inward direction of the hook by a rope hooked inside the hook, So that it is easy to hook and unplug the rope on the hook and to prevent the rope from being detached from the inside of the hook.

Generally, various types of crane are used in the industrial field to move heavy materials into and out.

At the lower end of the crane, there is provided a hook for lifting a heavy material by means of a wire rope, and a safety loop for preventing the wire rope from coming off is installed on the hook.

The safety hook of the hook has a through hole formed in a protrusion protruding inward on the upper side of the hook, and a safety collar and a spring are coupled and fixed to the through hole with a pin (bolt and nut).

The safety hook of the conventional hook configured as described above has an end opposite to the engaging portion of the safety hook, which is rotatably fixed by the pin, contacts the end of the hook by the elastic force of the spring, thereby blocking the entrance of the hook.

Therefore, when the safety ring is blocking the entrance of the hook, the worker binds the moving material or the like to the wire rope and pushes the wire rope to the entrance of the hook, the spring is compressed and the safety loop is pushed in. And then the spring is stretched so that the safety hook is pushed out, blocking the entrance of the hook.

Therefore, when the material is moved by the crane, the safety loop is locked in the hook, so that the wire rope does not come off from the hook.

However, after moving the material, etc. by the crane in the state where the safety ring is locked, the operator may inconvenience and inconvenience to pull the wire rope out of the opening of the hook with the other hand while opening the opening of the hook by pressing the safety hook with one hand In addition, most of the work sites have removed the safety hooks of the crane hooks and work on them, and only when there is a safety check, safety hooks are installed. In addition, Which is often used by turning the vehicle around the vehicle.

In order to solve the above-mentioned problems, the present invention provides a safety hook which is rotatably formed at an entrance of a hook, an elastic force acts on the inner side of the hook, And it is an object of the present invention to provide a safety hook for a crane that prevents the rope from being detached from the inside of the hook.

In order to achieve the above object, a safety hook for a crane according to the present invention is a safety hook for a crane having a safety hook for pivotal movement at an inlet of the hook, wherein a spiral spring is provided on the shaft pin for applying an elastic force to the inside of the hook A safety collar; A concave groove formed in a predetermined length along an inner center portion of the hook; A through hole formed at a predetermined length in an oblique direction on an upper portion of the hook; And a wire having one end fixed to an outer center of the safety ring and the other end fixed to an end of the hook through the through hole.

The center of the wire is formed in a spring shape.

In addition, a through hole is formed at the end of the hook, and a safety pin is coupled to the through hole to prevent the safety ring from rotating.

In addition, a through hole is formed at one side of the protrusion formed at the entrance of the hook, and a safety pin coupled to the through hole is prevented from flowing out of the safety ring.

As described above, according to the present invention, the safety ring rotatably formed at the entrance of the hook is urged in the inward direction of the hook, and the safety ring is rotated in the outer direction of the hook by the rope hanging inside the hook, And is a very useful invention for preventing the rope from being detached from the inside of the hook.

1 is an exploded perspective view showing a hook for a conventional crane;
2 is a perspective view showing a safety hook for a crane of the present invention.
3 - a perspective view of FIG. 2;
Fig. 4 is a use state reference diagram of the present invention. Fig.

The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

The safety hook 100 for a crane according to the present invention is a safety hook for a crane having a safety ring 110 rotatably formed at an entrance of the hook 101, (110) having a spiral spring (110); A concave groove 120 having a predetermined length along an inner center portion of the hook 101; A through hole 130 formed at an upper portion of the hook 101 and having a predetermined length in an oblique direction; And a wire 140 having one end fixed to the outer center of the safety ring 110 and the other end fixed to the end of the hook 101 through the through hole 130.

The safety collar 110 is formed to be rotatable on the protrusion 115 formed at the entrance of the hook 101. The safety collar 110 may be formed in a manner that an elastic force is applied to the inside of the hook 101 A spiral spring (spring-loaded spring) is provided on the shaft pin 110a.

This is for the purpose of facilitating the operation of pulling and pulling the rope A caught inside the hook 101.

One end of the wire 140 is fixed to the outside outer center of the safety ring 110 and the other end of the wire 140 passes through the through hole 130 formed in the upper portion of the hook 101, The wire 140 is fixed to the concave groove 120 formed on the inner surface of the hook 101 by the rope A hooked to the inside of the hook 101 as shown in Fig. The safety ring 110 fixed to one end of the wire 140 is finally rotated in the outward direction and the engagement protrusion 101c formed at the end of the hook 101 ).

That is, the wire 140 is pulled by the concave groove 120 by the load of the rope A, and the pulled wire 140 finally rotates the safety loop 110 to the outside, .

Meanwhile, the central portion of the wire 140 may be formed in a spring shape in order to impart a buffering force to the wire.

A through hole 101a is formed at the end of the hook 101 and a safety pin 110b coupled to the through hole 101a prevents the safety ring 110 from rotating This is to prevent the flow of the hook 101 due to the elastic force of the safety hook 110.

A through hole may be formed at one side of the protrusion 115 formed at the entrance of the hook 101 and a safety pin 115b may be coupled to the through hole to prevent the safety ring 110 from rotating This is also intended to prevent the flow of the hook 101 due to the elastic force of the safety hook 110.

Although the present invention has been described with reference to the exemplary embodiments, it is to be understood that the present invention is not limited to the disclosed exemplary embodiments, and that various changes and modifications will be apparent to those skilled in the art. Various modifications and variations are possible within the scope of the claims.

Description of the Related Art [0002]
100: safety hook for crane of the present invention
101: hook 101a: through hole
101b: safety pin 101c:
110: safety collar 110a:
115: projection 115b: safety pin
120: concave groove 130: through hole
140: wire A: rope

Claims

A safety hook for a crane, comprising a safety ring (110) rotatably formed at an entrance of a hook (101)
A safety collar 110 having a spiral spring on the shaft pin 110a so that an elastic force acts on the inside of the hook 101; A concave groove 120 having a predetermined length along an inner center portion of the hook 101; A through hole 130 formed at an upper portion of the hook 101 and having a predetermined length in an oblique direction; And a wire 140 having one end fixed to the outer center of the safety ring 110 and the other end fixed to the end of the hook 101 through the through hole 130. [ Safety hook for.

The method according to claim 1,
And a center portion of the wire (140) is formed in a spring shape.

The method according to claim 1,
A through hole 101a is formed at an end of the hook 101 and a safety pin 110b is coupled to the through hole 101a to prevent the safety ring 110 from rotating. Safety hook for crane.

The method according to claim 1,
A through hole is formed at one side of the protrusion 115 formed at the entrance of the hook 101 and the safety pin 115b is coupled to the through hole to prevent the safety ring 110 from rotating. Safety hook for crane.