JP2589497Y2 - Automatic hook device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hooking device used when a heavy object is suspended and moved by a crane or the like.

[0002]

2. Description of the Related Art When an object is suspended and moved by a crane or the like, the wire rope of the crane is most commonly connected to a slinging wire of the object by a shackle.
The joining operation by the shackle is a completely manual operation, and as described in JP-A-51-146050 (B66C 1/10) and JP-B-55-25594 (B66C 13/18), etc. Various hanging devices have been developed. In these, the hooking operation is automated by operating a hook or the like using an appropriate actuator such as a motor or a hydraulic cylinder in order to connect an article to be suspended to a hoist.

[0003]

In a suspension device in which an appropriate member such as a hook is operated by an actuator to couple an article to a hoist, a device such as a motor or a hydraulic cylinder is used. Large and expensive. In addition, a means for controlling the actuator is inevitably required, and the configuration is complicated and the cost is high.

[0004] The present invention has been made in view of the above-mentioned conventional problems, and has as its object the purpose of suspending an article on a hoist using a simple mechanism that does not use an actuator. An object of the present invention is to provide an automatic hooking device that can be automatically connected.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an automatic hooking device used when a heavy object is suspended and moved by a crane or the like.
A U-shaped bracket suspended in an inverted U-shape, and each end of the U-shaped bracket is rotatably mounted in a U-shaped plane, and opens and closes each half of the entrance portion of the U-shaped space. Two locking levers, stopper means for regulating the movement of the two locking levers so that the two locking levers do not open outward from a state in which the entrance portion is closed, and A spring for constantly biasing the locking levers so as to be in a position regulated by the stopper means; and a lower surface of the locking levers with the locking levers closing an entrance portion. Forming a pair of inclined surfaces extending downward in a U shape at a position lower than the U-shaped bracket ,
By lowering the V-shaped bracket, the respective inclined surfaces are brought into contact with the engaged pieces of the heavy object to push and open both the locking levers, and pass between the both locking levers to remove the engaged pieces. While the U-shaped space is inserted into the U-shaped space, the engaging portion that comes into contact with the engaged piece that has entered the U-shaped space by lifting the U-shaped bracket is positioned above the rotation center axis of both locking levers. It was formed on the upper surface of both levers.

[0006]

The U-shaped bracket of the automatic hooking device is suspended on a wire rope of a crane or the like, and the bracket is suspended in an inverted U-shape to engage an engaged piece (a hook or loop-shaped handle) of an object. , Etc.) so that the engaged pieces hit a pair of inclined surfaces on the lower surface of the locking lever. Then, the locking lever is pushed open by being pushed by the engaged piece, and the engaged piece passes between the two locking levers, and
We come into space in character. When the engaged piece enters the U-shaped space for a predetermined amount or more, the engaged piece is disengaged from the lever, and the lever is returned by the spring to a position regulated by the stopper means. When the U-shaped bracket is pulled up by a crane or the like in this state, the engaged pieces are positioned and abut against the engaging portions on the upper surfaces of both the locking levers regulated by the stopper means, and the heavy article of the target article is moved. Be lifted. At this time, since the engaging portion is formed at a position above the center axis of rotation of the two locking levers, the load of the lifted heavy object exerts a moment to press these against the locking levers against the stopper means. Acting as a force, the locking levers are more firmly closed, so that there is no danger that heavy objects will fall off. Also, both
The locking lever closes the entrance of the U-shaped space.
In this case, the lower surfaces of the locking levers are provided so that the engaged members
A pair of inclined surfaces for guiding to the entrance of the
Because it is formed in a C shape at a position lower than
Even if there is some misalignment with the engaged piece,
Can be combined. In addition, the locking lever is
Because it is urged and is constantly in contact with the stopper.
At the moment when the engaged piece is lifted by the recoil
The locking lever can be prevented from opening, resulting in an accident
Can be prevented beforehand. Also,

[0007]

1 and 2 show the construction of an automatic hooking device according to an embodiment of the present invention. The U-shaped bracket 1 is formed by integrating a spacer 2 between two U-shaped plates 1a and 1b. The spacer 2 is sandwiched between the central portions of the U-shaped plates 1a and 1b, and a suspension hole 3 is formed penetrating the whole. A wire rope of a crane is connected to the suspension hole 3 via, for example, a shackle. The U-shaped plates 1a, 1b are spaced apart from each other by spacers 2 at the distal ends (lower ends), and have bolt holes formed at both ends thereof so as to penetrate the two plates 1a, 1b, respectively. Locking levers 5 are attached to the bolt holes at both ends.

The locking lever 5 of this embodiment has a substantially trapezoidal shape in which one corner of a right triangle is cut off in parallel with the opposite side, and is set within the space between the U-shaped plates 1a and 1b. The bolt 4 penetrates through a hole serving as the center of rotation and bolt holes of the U-shaped plates 1a and 1b. The locking lever 5 is rotatable about the bolt 4 as a central axis .

As shown in the figure, the U-shaped bracket 1 and the two locking levers 5 are symmetrical left and right, and a spring 8 is mounted between the spacer 2 and each locking lever 5 respectively. ing. Each of the locking levers 5 is always urged by the spring 8 in the direction of arrow a. As stopper means for regulating the position of both locking levers 5 urged by the spring 8, stopper surfaces 5a of both locking levers 5 are brought into contact with each other at positions shown by solid lines in FIG. A stopper pin 5 b fixed to the lever 5 comes into contact with the U-shaped fitting 1.

[0010] As shown by the solid line, the state in which the locking lever 5 is positioned by the stopper means is referred to as a stopper position. In this stopper position, a pair of inclined surfaces formed on the lower surfaces of both locking levers 5 are spread downward and combined in a C-shape, and the entrance portion of the U-shaped space of the U-shaped fitting 1 is placed thereon. Are connected. In this position, the upper surface of both locking levers 5 is located above the rotation center axis , and the lower surface is
It is located below the U-shaped fitting 1. Both locking levers 5 cannot rotate in the direction of arrow a from the stopper position, but can rotate only in the opposite direction. When the locking lever 5 rotates against the force of the spring 8 and comes to the position shown by the dotted line, the entrance portion of the U-shaped fitting 1 closed by the locking lever 5 opens. Note that the biasing force of the spring 8 is relatively weak, and the weight of the entire device is sufficiently weaker than the force acting on the locking lever 5 to rotate it.

In FIG. 1, small circles 10, 10a, 10a
Reference numerals b, ... denote engagement pieces (members to be hooked by this automatic hooking device, such as hook-shaped handles) of heavy objects which are objects to be hung on a crane or the like. The crane's wire rope is connected to the hanging hole 3 of the U-shaped bracket 1, and the apparatus is suspended as shown in FIG. In this state, the device is lowered toward the engaged piece at the position 10a. Then, the engaged piece relatively rises to the position of 10b and further moves along the inclined surface of the locking lever 5 by 10c.
Reach the position. When the apparatus is further lowered, the engagement lever 5 is pushed open by the engaged piece. Accordingly, the engaged piece relatively moves from the position of 10c by 10 °.
d, 10e, and 10f to enter the U-shaped fitting 1 while rotating the locking lever 5. When the engaged piece is Komu Ri enter slightly upward from the position of 10f passes between them Ryokakaritome levers 5,5, the engaged piece is disengaged from the engaging lever 5,
The locking lever 5 rotates by the force of the spring 8 and returns to the stopper position. At this time, the engaged piece remains in the space surrounded by the U-shaped bracket 1 and the locking lever 5. When the apparatus is pulled up in this state, the engaged piece comes into contact with the engaging portion formed on the upper surface of the locking lever 5 which is regulated at the stopper position as shown by a solid line position 10. Therefore, the article connected to the engaged piece can be lifted by the crane.
At this time, since the engaging portion is formed at a position higher than the rotation center axis of both locking levers 5, the load of the lifted heavy object is applied to both locking levers 5 by stopper surfaces 5a. It acts as a moment force that pushes each other further to close both locking levers 5 more firmly.
There is no risk that heavy objects will fall off. The above operation does not require direct manual operation, and the device may be lowered and raised in accordance with the position of the engaged piece. Also, both locking
Lever 5 closes the entrance of the U-shaped space
The lower surfaces of the locking levers 5 are used to form the engaged members in a U-shaped space.
A pair of inclined planes for guiding to the entrance
Opening in a C-shape below the tool 1
Quick and reliable even if there is some misalignment with the engaged piece
Can be engaged. Furthermore, both locking levers 5
It is urged by the spring 8 and is always in contact with the stopper bolt 4.
The engaged piece lifts up due to the recoil during lifting.
That the locking lever 5 opens at the moment
It can be prevented as much as possible, and the occurrence of an accident can be prevented.

[0012]

[Effects of the Invention] The automatic hooking device according to the present invention has a very simple structure without using an actuator such as a motor or a hydraulic cylinder. In use, the entrance portion of the U-shaped bracket of the present device faces downward. Just lowering the device automatically by rotating the locking lever and entering the U-shaped fitting by simply lowering the device relative to the engaged piece of the target article, and pulling up the device in that state With this, the engaged piece can be hooked and lifted. That is, the work of hooking the target article on the lower end of the wire rope such as a crane can be performed almost automatically. Further, since the engaging portion is formed at a position higher than the center axis of rotation of both locking levers, the load of the lifted heavy object can be applied to both locking levers by a moment force which presses them against the stopper means. As it acts as, and closes both locking levers more firmly,
There is no risk that heavy objects will fall off. Also, both locking levers are U-shaped
With the entrance of the inner space closed,
The lower surface of the bar guides the engaged member to the entrance in the U-shaped space
A pair of inclined surfaces to be positioned below the U-shaped bracket 1.
, So that it is slightly open
Can be quickly and reliably engaged even if there is a misalignment of
it can. Further, both locking levers are biased by a spring.
Because it is always in contact with the stopper bolt,
When the engaged piece rises due to the reaction of
The bar can be prevented from opening as much as possible,
You can prevent life.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic hooking device according to an embodiment of the present invention.

FIG. 2 is a side view of the automatic hooking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 U-shaped bracket 1a, 1b U-shaped plate 2 Spacer 3 Hanging hole 4 Bolt (rotating shaft) 5 Locking lever 5a Stopper surface 5b Stopper pin 8 Spring 10, 10a, 10b,.

Claims (1)

(57) [Scope of request for utility model registration] An automatic hooking device used when a heavy object is suspended and moved by a crane or the like.
A U-shaped bracket suspended in a U-shape, and both ends of the U-shaped bracket are rotatably mounted in a U-shaped plane, respectively, and open and close halves of an entrance portion of a space in the U-shape, respectively. Locking levers, stopper means for restricting the movement of the locking levers so that the locking levers do not open outward from a state in which the entrance portion is closed, and the locking levers each include the stopper A spring that constantly biases the locking levers so as to be in a position regulated by the means. A pair of slopes that spread downward like a front
It is formed at a position lower than the U-shaped metal fitting, and while the U-shaped metal fitting is lowered, the respective inclined surfaces are brought into contact with the engaged pieces of the heavy object to push and open both locking levers. The engaging piece is inserted into the space inside the U-shape by passing between the two locking levers, while the U-shaped fitting is pulled up to move the U-shaped
An automatic hooking device, characterized in that an engaging portion that comes into contact with the engaged piece that has entered the character space is formed on the upper surfaces of both levers that are located above the rotation center axes of both locking levers.