JPH08143264A - Load suspension device for crane - Google Patents

Abstract

PURPOSE: To provide a load suspension device for a crane which supplies a plurality of suspended loads to a destination one by one while keeping a plurality of the suspended loads stable with its suspended state at a time. CONSTITUTION: A load suspension device 1 is provided with a suspension girder 3 suspended from a crane hook 2, a pair of chain guides 4 which can move in the inverse direction each other along the bottom part of the suspension girder 3 and suspend curtain walls 11 crossing at right angles with the movement direction and coming to have a same number of suspension loads thereunder, a drive motor 9 for sending out a guide 4, and a turning device 5 which is arranged in the upper part of the suspension girder 3 and turns the suspension girder 3 by 180.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane hoisting device which is capable of lifting a plurality of hoisting loads and mounting the hoisted load by one crane operation.

[0002]

2. Description of the Related Art Usually, the work of fixing the outer wall member to the mounting position is hung up by a crane one by one, hoisted to a target position and then mounted, so that workability is poor.

By the way, the outer wall member P is heavy.
In addition to the C version, there is a lightweight aluminum curtain wall. Since the lifting load per sheet of this curtain wall is small, the load on the crane is small even if several curtains are simultaneously lifted.

Therefore, recently, a guide rail that is horizontally movable by a motor is arranged inside the upper portion of a box-shaped frame, and a plurality of curtain walls are hung in a row below the guide rail. Has been developed, the lifting device is lifted by a crane and sequentially positioned at the mounting position, and then the guide rails are moved to supply one by one from the opening of the frame to perform the fixing work.
The number of hoisting cranes is reduced to streamline work.

[0005]

However, in the hoisting device of this structure, since the frame itself is formed in a box shape, the hoisting load becomes extremely unbalanced as the number of curtain walls decreases, and the frame tilts. Therefore, there was a problem in terms of stability such as taking out and fixing work became difficult.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a crane capable of successively supplying a plurality of suspended loads at a time to a target location while maintaining stability. A hanging device is provided.

[0007]

In order to achieve the above object, the present invention provides a suspension girder suspended on a crane hook,
A pair of guides that are movable in opposite directions along the lower part of the suspension girder, and that hang the same number of suspended loads in the lower part at right angles to the moving direction;
It is characterized in that a swivel device is provided on the suspension girder to swivel the suspension girder 180 °.

[0008]

According to the above construction, with the one end side of the suspension girder facing the mounting position, the feeding mechanism is driven to supply the suspended load located at the forefront to the mounting position. By driving the swivel device at the next mounting position, the suspension girder is swiveled 180 ° so that the other end faces the mounting position, and similarly to the above, the suspended load in the front row is supplied to the mounting position on the opposite side.

[0009] In the following, the suspension girder is turned every time the suspended load is supplied, and the suspended loads located on the opposite side are alternately supplied to the supply position, so that the suspended load is not unbalanced and the lift is carried out once. It is possible to position a plurality of suspended loads at the supply position by heavy work.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a hoisting device according to the present invention. The hoisting device 1 is a crane hook 2
A suspension girder 3 suspended via a wire w, a pair of chain guides 4 provided on both lower sides of the suspension girder 3 and movable in mutually opposite directions, and fixedly arranged at the upper center of the suspension girder 3. And a swivel device 5.

Each chain guide 4 includes a sprocket 7 that is rotatably supported by a pair of bearing brackets 6 that are integrated with the lower portion of the suspension girder 3, and a chain 8 that is endlessly suspended between the sprockets 7. A drive motor 9 connected to the shaft of the sprocket 7 on the center side is provided, and the rotation of the motor 9 causes the chain 8 to be sequentially moved to the end side of the suspension girder 3.

[0012] Hanging hooks 10 are integrally provided on the outer peripheral portion of each chain 8 at appropriate intervals, and a plurality of curtain walls 11 serving as loads are hung through the hooks 10.
The upper ends of the are suspended perpendicular to the direction of movement.

The turning device 5 is, for example, Japanese Patent Publication No. 4-1787.
It is composed of a gyro-type turning attitude control device shown in Japanese Patent Publication No. 3, which prevents turning of the suspension girder due to wind or the like, and arbitrarily controls the turning attitude of the suspension girder. A gimbal rotatable about a rotation axis parallel to the suspension girder 3 and a flywheel rotatable about a spin axis orthogonal to a plane including the rotation axis of the gimbal are provided, and the gimbal is rotated by a motor. Thus, the suspension girder 3 is provided with a function of rotating the suspension girder 3 and stopping the both ends of the suspension girder 3 so as to face each other at arbitrary positions.

In the above structure, the hoisting device 1 is hung at the slinging position, where the curtain wall 11 is hung on each hook 10. In this case, curtain wall 1
1 is arranged so that its rear surface, that is, the surface on the inner side of the building is oriented in the moving direction. When the equipment is ready for hoisting, the crane will lift it. At this time, since a plurality of curtain walls 11 are suspended symmetrically at the lower part of the suspension girder, the curtain wall 11 is maintained in a horizontal state.

At the first mounting position, as shown in FIG. 3 (a), one end of the suspension girder 3 is positioned orthogonally to the mounting position A by swivel adjustment by the swivel device 5, and then the suspension girder 3 is moved closer to the chain. The guide wall 4 is advanced to supply the curtain wall 11 located in the front row to the mounting position A.

After the supply is completed, the load balance moves to the other side, and the suspension girder for one panel inclines to some extent, but it is not an extreme inclination, and the curtain wall 11 itself is held vertically. In addition, when maintaining horizontal,
It suffices to move each of the lightened curtain walls 11 to the end side of the suspension beam 3 to balance the moment. In this state, the lifting device 1 is retracted from the mounting position A as shown in FIG. 3 (b), and the turning device 5 is driven to turn 180 ° as shown in FIG. 3 (c). The load balance is again equalized by bringing the opposite end part closer to the next mounting position A so as to face the mounting position A and supplying the frontmost curtain wall 11 located on the opposite side to the mounting position A as shown in FIG. 3D. The suspension girder 3 is restored horizontally.

In the following, the suspension girder 3 is swung every time the curtain wall 11 is supplied one after another, and the curtain wall 11 located on the opposite side is alternately supplied to the supply position A, thereby causing an extreme imbalance of the suspended load. It is possible to supply a plurality of curtain walls 11 to the mounting position by one lifting operation without having to do so.

[0018]

As described above in detail with reference to the embodiments, in the crane lifting device according to the present invention, the feeding mechanism is driven with one end side of the hanging girder facing the mounting position. Supply the suspended load located at the forefront to the mounting position and drive the swivel device at the next mounting position to swivel the suspension girder 180 ° and make the other end face the mounting position. By repeating the work of supplying the suspended load in the front row to the mounting position on the side, it is possible to position multiple suspended loads at the supply position by one lifting operation without causing an extreme imbalance of the suspended load. There is an advantage that it does not hinder the installation due to the balance fluctuation.

[Brief description of drawings]

FIG. 1 is a side view of a lifting device according to the present invention.

FIG. 2 is a sectional view taken along the line EE of FIG.

3 (a) to 3 (d) are plan explanatory views showing a procedure for attaching a curtain wall using the same apparatus.

[Explanation of symbols]

 1 Suspended load device 2 Crane hook 3 Suspended girder 4 Chain guide 5 Revolving device 9 Drive motor 11 Suspended load

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Taikuni Uemura 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation, Tokyo headquarters (72) Inventor Nobuyoshi Iwai 4-33 Kitahama East, Chuo-ku, Osaka City, Osaka Prefecture (72) Inventor Seigo Hirose 4th 33, Kitahama East, Chuo-ku, Osaka City, Osaka Prefecture

Claims (1)

[Claims] 1. A suspension girder suspended on a crane hook, and movable along the lower part of the suspension girder in mutually opposite directions, and suspending the same number of suspended loads on the lower part at right angles to the moving direction. A hoisting device for a crane, comprising: a pair of lowered guides, a feed mechanism for the guides, and a turning device that is arranged above the hanging girder to turn the hanging girder 180 °.