JPH06156975A - Suspension cargo turning control method - Google Patents

Abstract

PURPOSE:To prevent turning of a suspension cargo during hoisting of a material with the aid of a crane. CONSTITUTION:Two guide wire ropes 7 are stretched around the tower of a crane with a specified distance therebetween. Two assistance wire ropes in which pulleys 9 and 10 vertically moved together with a suspension cargo W along a wire rope 7 serving as a guide are incorporated. The assistance wire ropes 8 are stretched with the aid of a winch 12. In this state, hoisting of the crane is performed and hoisting is effected in a state to prevent turning of a suspension cargo.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling a swing of a suspended load, and more specifically, it is possible to prevent the swing of a suspended load due to the influence of wind or the like in the lifting of a material, thereby rationalizing and safety of lifting work The present invention relates to a suspended load turning control method capable of improving the above.

INDUSTRIAL APPLICABILITY The present invention can be widely used in various industries in which construction work and other materials are lifted.

[0003]

2. Description of the Related Art Conventionally, in the lifting work of materials, an intermediary rope is attached to a hanging load and the turning of the hanging load is manually suppressed.

However, when the hoisting place is high, the intervening rope does not reach and there is no control method. Therefore, the hoisting was carried out by selecting the time when there was no wind, but when the wind suddenly blows, the suspended load turns. However, it sometimes collided with the surrounding area and was damaged.

[0005]

In lifting work, it is problematic in terms of construction period and safety that the intermediary rope is used to manually push the turn or select a windless day.

An object of the present invention is to eliminate the disadvantages of the prior art and to sling a suspended load so that lifting can be carried out even in a breeze and turning can be prevented, rationalization of lifting work and safety are ensured. It is an object of the present invention to provide a suspended load turning control method capable of improving the situation.

[0007]

In order to achieve the above-mentioned object, the present invention, in hoisting, uses two wire ropes having upper and lower portions fixed to a crane tower, building, etc. at regular intervals, The wire rope is used as a guide to tension the interlocking wire rope that goes up and down with the suspended load at the same place as the guide wire rope, the interposition wire rope is fixed at the top, and the bottom is wound around the winch via another pulley. By pulling the complex wire rope with a winch, the complex wire rope between the suspended load and the guide wire rope becomes tense, and by hoisting the crane in that state, the suspended load is prevented from turning and the lifting load is increased. The suspended load turning control method is made possible.

Further, in carrying out the present invention, the working radius of the crane is changed by operating the push button on the winch or automatically operating by computer control so that the tension of the left and right interposing wire ropes is the same. To be able to deal with

[0009]

According to the present invention, the tension of interposition wire ropes attached to the left and right of the suspended load can be adjusted by operating the winch, and the suspended load can be prevented from turning.

The direction of the suspended load can be changed by adjusting the tension of the left and right interposing wire ropes.
It is possible to freely control the posture while lifting the suspended load.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

Cranes used for hoisting materials are roughly classified into a traveling carriage 1, a swivel base 2 provided on the traveling carriage 1,
A tower 3 which is erected on the swivel base 2, a jib 4 which is connected to the top of the tower 3 so as to be capable of undulating, a suspension wire 6 having a hook 5 attached to its tip, an undulating wire, an undulating winch, and a hoisting winch (not shown). It is a well-known one consisting of

Now, 7 is a guide wire rope.
This guide wire rope 7 consists of two pieces, and the upper part is wire clip (not shown) with a certain interval on the side of the tower of the crane to be installed, the side wall of the hole inside the wall of the building, the pillar part of the tower crane, etc. Use a lever block (not shown) to tighten the guide wire rope so that the tension can be adjusted.

Numeral 8 is an interposing wire rope. The interposing wire rope 8 is also composed of two parts, and the upper portion is fixed at the same place as the guide wire rope 7 with a wire clip (not shown) or the like, and the combination pulley 9 and the single pulley 10 are provided on the way.
, And the lower part is wound around the winch 12 via another pulley 11. The winch 12 is provided at the same position as the lower lever block of the guide wire rope 7.

As shown in FIG. 3, the combination pulley 9 is composed of three pulleys assembled so as to have a triangular shape.
One pulley 9 engages with the guide wire rope 7 and the other 2
Interlocking wire rope 8 on one of the two pulleys 9
Halfway over and bend at a substantially right angle, then the combination pulley 9
It is hung on a single pulley 10 away from the vehicle and inverted, and further hung on the other pulley 9 of the other two pulleys and bent at a substantially right angle. Therefore, the combination pulley 9 and the single pulley 1
0 is the guide wire rope 7 together with the suspended load when lifting
It is guided by and moves up and down.

The winch 12 in which the interposition wire rope 8 is wound enables a push button operation at the hand or an automatic control operation by incorporating a computer.

Others In FIG. 2, 13 is a suspension balance, and FIG.
, 14 is a sling wire, 15 is a hanging jig, 16
Is a connector.

At the time of lifting, the upper part of the suspended load W or the suspension balance 13
The pulleys 10 loaded on the interposition wire ropes 8 on the left and right sides of the interlocking wire ropes 8 are attached by the connecting tools 16 and the suspended load W is wound up and cut into a ground state. The intervening wire rope 8 should be in a tensioned state on both sides.

By winding the suspended load W in a state where the interposition wire rope 8 is tensioned in both the left and right, the suspended load W can be prevented from turning and can be lifted.

When the distance between the guide wire rope 7 and the suspended load W changes due to the raising and lowering of the jib 4, the left and right winches 12 so that the tension of the interposing wire rope 8 does not change.
Then, the interposing wire rope 8 is fed out and wound up.

As described above, a sensor is attached to the interposition wire rope 8 or the winch 12 for feeding and winding the interposition wire rope 8 due to the change of the working radius in the crane work, and the tension of the left and right interposition wire ropes 8 is automatically linked with the computer. If the left and right intervening way ropes 8 are constantly maintained at a constant degree of tension by sensing the change in the above condition, it is possible to easily prevent the suspended load W from turning.

When the suspended load W reaches the intended place and is taken in,
The direction of the suspended load W can be freely adjusted by changing the tension of the left and right interposing wire ropes 8.

According to the present invention, not only can a guide wire rope be stretched by using a tower of a crane, but a guide wire rope can be stretched around the opening when hoisting the building underground.

[0024]

As described above, according to the suspended load turning control method of the present invention, in the lifting work, the intermediary rope is used to manually press the turn or select a windless day to perform the work. If the inconvenience is solved and slinging of the suspended load is possible, the suspended load can be prevented from swinging even when the wind is light, and lifting can be performed, and the swinging load can be controlled by remote control. It is possible to rationalize and improve safety.

[Brief description of drawings]

FIG. 1 is an overall side view showing an example of an apparatus for carrying out a suspended load turning control method according to the present invention.

FIG. 2 is a cross-sectional plan view showing an example of an apparatus for carrying out the suspended load turning control method of the present invention.

FIG. 3 is a partial detailed side view showing an example of an apparatus for carrying out the suspended load turning control method of the present invention.

[Explanation of symbols]

 7 ... Guide wire rope 8 ... Interposed wire rope 9 ... Combination pulley 10 ... Pulley 11 ... Pulley 12 ... Winch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masami Hayashi 1-3-8 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch

Claims (2)

[Claims] 1. In lifting, two wire ropes having upper and lower parts fixed to a tower of a crane or a building are tensioned at regular intervals, and a pulley for moving up and down together with a suspended load is set using the wire ropes as guides. The interposition wire rope is stretched at the same place as the guide wire rope, the top part of the interposition wire rope is fixed, and the bottom part is wound around the winch via another pulley. A suspended load swing control method characterized in that a wire rope intervening between a wire rope and a wire rope is tensioned, and a crane is hoisted in that state to prevent the suspended load from swinging to enable lifting. 2. A push button operation on a winch, or
The automatic operation by computer control is performed so that the tension of the left and right intervening wire ropes is made the same so as to respond to the change in the working radius of the crane. Suspended load turning control method.