JP2001270685A - Hook housing device for crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with the replacement of a bracket for housing a hook even when the hook is replaced to be used. SOLUTION: In this crane where the hook is suspended by a wire rope 6 from a top sheave 3 pivoted on a boom top 2, a pin bracket 7 is mounted on a point lower part of the boom top 2, a hook housing bracket 8 having a lower face 11 capable of being kept into contact with both of a single hook 50 and a double hook 5 to be replaced to be used, is rotatably pivoted on the pin bracket 7 in front of the wire rope 6 from the top sheave 3 to the hook, and a locking part 14 for locking an end of the wire rope 6, and rope guides 15, 16 for guiding the wire rope to the locking part 14 when the double hook 5 is used, are mounted on the boom top 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane hook storage device which does not require replacement of a hook storage bracket even when a hook is replaced and used.

[0002]

2. Description of the Related Art When performing a crane operation, a crane hook used includes a single hook for hanging one wire rope and a multiple hook for hanging a plurality of wire ropes according to the contents of the operation. Are used properly. For example, a single hook is used when lifting a lightweight object and speed is required, and a plurality of hooks are used when lifting a heavy object, so it is necessary to replace the hook when changing work. There is.

[0003] When the crane operation is completed, the hook is stored and fixed at the storage position at the tip end of the boom by the hoisting hook storage device. The hook storage device includes a hook storage bracket rotatably supported on the boom top,
When the hook is wound up, the upper end of the hook comes into contact with the hook storage bracket, and when the hook is further continued, the hook rotates together with the hook storage bracket to reach the storage position and is fixed.

[0004]

However, in the conventional hook storage device, a dedicated hook storage bracket corresponding to each type of hook is used as the hook storage bracket. In order to use this hook properly, when replacing the hook and using it, the bracket for storing the hook must also be replaced according to the hook, the replacement work is troublesome and requires time and effort,
Crane work could not be performed quickly.

The present invention solves the above problem in a crane hook storage device. Even when a hook is replaced and used, there is no need to replace a hook storage bracket, and the crane operation can be performed quickly. It is an object of the present invention to provide a crane hook storage device that can be used.

[0006]

SUMMARY OF THE INVENTION A hook storage device according to the present invention is a crane for hanging a hook with a wire rope from a top sheave supported by a boom top. A hook storage bracket having a lower surface to which both a single hook and a plurality of hooks can be abutted is rotatably attached to a pin bracket in front of a wire rope from a top sheave to a hook. In addition to pivotally supporting the boom top, the above-mentioned problem is solved by providing a fastening portion for fastening the end of the wire rope when using a plurality of hooks and a rope guide for guiding the wire rope to the fastening portion. .

In this crane hook storage device, regardless of whether one hook or a plurality of hooks are used,
When the hook is wound up, the upper end of the hook comes into contact with the lower surface of the hook storage bracket, and when the winding is further continued, the hook rotates together with the hook storage bracket to reach the storage position and is fixed. Therefore, even when the hook is replaced and used, there is no need to replace the hook storage bracket in accordance with the hook, and the replacement operation is easy and the crane operation can be performed quickly.

If a guide roller is provided at a position below the hook storage bracket where the wire rope passes, even if the hook storage bracket swings back and forth, the wire rope is not damaged.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view of a crane hook storage device according to an embodiment of the present invention using two hooks, and FIG. 2 is a perspective view of the hook storage device. FIG. 3 is a front view showing a used state, FIG. 3 is an explanatory view of a stored state of the two hooks, and FIG.

Here, a top sheave 3 is pivotally supported between both side plates of a boom top 2 provided at a tip portion of a crane boom 1, and a two-hook hook 5 having a hook sheave 4 is attached to the top sheave 3. From a wire rope 6 of a winch (not shown). Pin brackets 7 are provided at the lower ends of both side plates of the boom top 2, and the brackets 8 for storing the hooks are pivotally supported on the pin brackets 7 by pins 9 so as to be able to rotate back and forth (left and right in FIG. 1). Have been. The position of the pin 9 is set ahead of the wire rope 6 from the top sheave 3 to the hook sheave 4. Thereby, when the two hooks 5 are wound up,
The upper end 10 of the double hook 5 is a hook storage bracket 8.
When the winding is continued, the two hooks 5 rotate rearward (counterclockwise in FIG. 1) together with the hook storing bracket 8.

The lower surface 11 of the hook storing bracket 8 is
Each of the two hooks 5 and the single hook 50 shown in FIG. 5 which is used in exchange for the hooks 5 is configured to be a size that can be abutted and flat. The wire rope 6 is located at a position where the wire rope 6 passes below the hook storing bracket 8.
A pair of guide rollers 12 are provided so as to sandwich the front and rear sides from the front and rear.

The double hook 5 has a flat upper end 10 so as to abut the lower surface 11 of the hook storing bracket 8. At the upper part of the side plate of the boom top 2, a fastening part 14 to which a wire socket 13 to which the end of the wire rope 6 is attached is connected, and at the lower part and the middle part of the side plate of the boom top 2, the wire rope 6 is securely stopped. Rope guides 15 and 16 for guiding to the attachment portion 14 are provided.

The wire rope 6 passes through the top sheave 3 and the hook storing bracket 8 from the winch side and is wrapped around the hook sheave 4, and then guided by the rope guides 15 and 16 to the fastening portion 14, whereupon the wire rope 6 is connected. At 13, it is connected to the fastening part 14. When performing crane work,
The two hooks 5 are wound up and down by the winch.

When the two hooks 5 are stored after the crane operation is completed, the two hooks 5 are wound up. Then
The upper end 10 of the double hook 5 is a hook storage bracket 8.
Abuts on the lower surface 11 and continues to wind up, the two hooks 5 rotate backward together with the hook storage bracket 8 to reach the storage position shown in FIG. Since the guide roller 12 is provided at the wire rope passing position below the hook storing bracket 8, the wire rope 6 is not damaged even if the hook storing bracket 8 swings back and forth.

FIG. 5 is a side view showing a state where the single hook of the hook storage device is used, FIG. 6 is a front view showing a state where the single hook of the hook storage device is used, and FIG. 7 is a single hook. 8 is a sectional view taken along line BB of FIG. 7. The single hook 50 is configured flat so that the upper end 51 abuts on the lower surface 11 of the hook storing bracket 8. The wire rope 6 passes through the top sheave 3 and the hook storing bracket 8 from the winch side, and is connected to the inside of the single hook 50 by the wire socket 13.

For example, when speed is required when lifting a light-weight object, the single hook 50 is used. When a crane operation is performed, the single hook 50 is raised and lowered by a winch.
When storing the single hook 50 after the crane operation, the single hook 50 is wound up. Then, the upper end 51 of the single hook 50 comes into contact with the lower surface 11 of the hook storing bracket 8, and when the winding is further continued, the single hook 50 rotates backward together with the hook storing bracket 8 and is shown in FIG. 7. It is fixed to the storage position.

When the work is changed, it is necessary to exchange the two-hook 5 and the one-hook 50. In this crane's hook storage device, the hook storage bracket 8 is used.
Since there is no need to replace the cranes, the replacement work is easy and the crane work can be performed quickly. In this hook storage device of the crane, two hooks 5 are used as a plurality of hooks. However, since the fastening portion 14 for fastening the end of the wire rope 6 is provided on the boom top 2, Four hooks, six hooks, and the like having an even number of hooks can be similarly rotated and stored by appropriately selecting the size of the hook storage bracket 8.

[0018]

As described above, the hook storage device of the crane of the present invention does not require replacement of the hook storage bracket in accordance with the hook even when the hook is replaced and used. The crane operation can be performed quickly and easily without requiring time and labor.

If a guide roller is provided at the wire rope passing position below the hook storing bracket, the wire rope will not be damaged even if the hook storing bracket swings back and forth.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where two hooks are used in a hook storage device of a crane according to an embodiment of the present invention.

FIG. 2 is a front view showing a state where two hooks of the hook storage device are used.

FIG. 3 is an explanatory diagram of a stored state of a two-hook.

FIG. 4 is a sectional view taken along the line AA of FIG. 3;

FIG. 5 is a side view showing a state in which a single hook of the hook storage device is used.

FIG. 6 is a front view showing a state where a single hook of the hook storage device is used.

FIG. 7 is an explanatory diagram of a storage state of a single hook.

FIG. 8 is a sectional view taken along the line BB of FIG. 7;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boom 2 Boom top 3 Top sheave 4 Hook sheave 5 Two hooks 6 Wire rope 7 Pin bracket 8 Hook storing bracket 9 Pin 10 Upper end 11 Lower surface 12 Guide roller 13 Wire socket 14 Fastening part 15 Rope guide 16 Rope guide 501 Hook hook 51

Claims (2)

[Claims] 1. A crane for hanging a hook with a wire rope from a top sheave pivotally supported by a boom top, wherein a pin bracket is provided at the lower end of the end of the boom top, and a single hook and a plurality of hooks are used after replacement. A hook storage bracket having a lower surface that can be abutted by any of the hooks,
At the front of the wire rope from the top sheave to the hook, it is pivotally supported on the pin bracket, and the boom top is provided with a fastening part and a wire rope for fastening the ends of the wire rope when using multiple hooks. A hook storage device for a crane, comprising a rope guide that leads to a fastening portion. 2. A crane hook storage device according to claim 1, wherein a guide roller is provided at a position below the hook storage bracket where the wire rope passes.