JPH02249893A - Automatic level controller for craning load - Google Patents

Abstract

PURPOSE:To perform automatic level adjustment for a craning load so safely and efficiently by controlling the inclination of a hoisting accessory through a detection signal of each level sensor attached to this hoisting accessory connected to the direction orthogonal with each other. CONSTITUTION:A motor 3 with a speed reducer is controlled on the basis of each incline detecting signal of level sensors 5, 10 and thereby screw threads 6, 11 are rotated, adjusting each setting position of anchoring wires 2, 8 is adjusted in both directions, and a hoisting accessory is made so as to be kept in horizontality. In this connection, an automatic clamp 13 is attached to a guide beam 12, holding a lifting load 14, but the clamp is properly replaced according to a lifting load form whereby operations ranging from sliding work to removal work can be fully automated. With this constitution, automatic adjustment can be done by detection irrespective of the form of the lifting load, thus the shortening of lifting cycle time is efficiently promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic leveling device for a crane-hanging load, which horizontally adjusts the hoisted load during lifting work when slinging by a crane or the like.

[Conventional technology]

When lifting a sling using a crane or the like, if the work is performed with the suspended load tilted, the suspended load will become unstable, so it is necessary to adjust the attitude of the suspended load.

Conventionally, when lifting a sling using a crane, etc., in order to keep the load suspended by the crane in a stable position, a child enblock was attached to each platform wire, and the sling was leveled manually when the operator cut it off the ground. We are making adjustments as follows.

[Problem to be solved by the invention]

However, conventional horizontal adjustment work for suspended loads requires a large number of sub-enblocks, and also has high risk of high risk since workers manually create chain-blocks near the suspended load. there were.

The present invention solves the above-mentioned problems, and provides an automatic leveling device for a crane suspended load that can safely and efficiently level the suspended load and shorten the lifting cycle time. It is intended for the purpose of providing.

[Means to solve the problem]

To this end, the present invention connects the hanging devices in directions perpendicular to each other, attaches a level sensor to the lifting devices, and activates an adjustment device based on the inclination detection signal from the level sensor to control the inclination of the lifting devices to ensure that the suspended load is level. The feature is that the adjustment is made.

[Effect]

In the automatic leveling device for crane-hanging loads of the present invention, the adjustment device is activated by the inclination detection signal of the level sensor to control the inclination of the hoisting equipment and leveling the hoisted load, so that a worker approaches the hoisted load. The horizontal adjustment of the suspended load is automatically performed based on the inclination detection signal from the level sensor as soon as the load is cut off the ground, without having to operate the chain rotor or the like.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 1 is a diagram showing one embodiment of the automatic leveling device for crane-hanging loads according to the present invention, where l is a battery and a control panel, 2 and 8 are wires attached to the platform, 3 is a motor with a speed reducer, 4 is a 9 is a wire mounting bracket with a base, 5 and 10 are level sensors, 6
and 11 are screws, 7 and 12 are guide beams, 1
3 indicates an auto clamp, and 14 indicates a suspended load.

In FIG. 1, the guide beams 7.12 each have two axially slidable mounting wire fittings 4.9 in which there are screw threads 6.11. The wire mounting bracket 4.9 is engaged with the screw thread 6.11 at a predetermined interval. Furthermore, the end of the guide beam 7.12 is fitted with a screw screw 6.11.
There is a motor 3 with a reduction gear for rotating the motor. The guide beam 12 is suspended below the guide beam 7 by a mounting wire 8 in a direction perpendicular to the guide beam 7 . That is, by using three sets in combination so as to be orthogonal to each other, it is possible to maintain horizontality even with respect to a planar suspended load.

The level sensor 5, lO is mounted on the guide beam 7.12 to detect the inclination of the lifting equipment, and the battery and control panel l is mounted on the guide beam 7, and the level sensor 5.10 is mounted on the guide beam 7. By controlling the motor 3 with a speed reducer based on the inclination detection signal, the screw 6.11 is rotated to adjust the attachment position of the mounting wire 2.8 to the left and right, so as to keep the hanging tool horizontal. It is something to do. That is, since the length of the mounting wire 2.8 is the same on the left and right sides, when the mounting wire mounting bracket 4 moves in the horizontal direction on the page, the tilt in the horizontal direction on the paper is adjusted, and the mounting wire mounting bracket 9 adjusts to the depth in the paper. When it moves in the (back and forth) direction, the inclination in the depth direction of the page is adjusted, the emphasis position is moved with respect to the center of gravity, and the suspended load 14 is kept horizontal. That is, a method of moving the mounting position is adopted in which the position of the center of gravity of the suspended load is laterally moved by horizontally moving the position of the hanging point of the mounting wire using a screw.

For example, if the guide beam 7 is now in a downward-sloping state to the right in the drawing, this inclination is detected by the level sensor 5.

When this downward tilt detection signal is sent to the control panel l,
The control panel 1 generates a control signal for the motor 3 with a reduction gear that moves the wire mounting bracket 4 to the right in the figure, and provides the control signal to the motor 3 with a reduction gear. For example, if the screw 6 is rotated to the left and the wire mounting bracket 4 moves to the right in the drawing, the signal becomes a signal to rotate the screw 6 to the left. Similarly, a tilt detection signal from the level sensor 5 controls a motor with a reduction gear (not shown) that rotates the screw 11.

Note that an auto-clamp 13 is attached to the force-id beam 12 to hold the suspended load 14, but this clamp can be replaced as appropriate depending on the shape of the suspension. Of course, it is possible to make it fully automatic.

FIG. 2 is a diagram showing another embodiment of the automatic leveling device for crane-suspended loads according to the present invention, in which 20 and 24 are left and right operating electric chain rotors, 21 and 25 are hanging chains, 22 is a battery and a control panel, 23 and 26 are horizontal beams, 2
7 is a level sensor, 28 is an auto clamp, and 29 is a suspended load.

In Fig. 2, the hanging chino 2L25 has hooks attached to both ends and hangs from the horizontal beam 23.26 with both knocks.
The left and right lengths of the electric chenoblock 20.24 change to change the inclination of the horizontal beam 23.26.

The horizontal beams 23 and 26 are arranged in orthogonal directions to enable horizontal adjustment in the XY plane.

The level sensor 27 detects the inclination of the horizontal beam 26. The battery and control panel 22 controls the rotation of the left and right electric chenoblock 24 based on the detection signal from the level sensor 27. In other words, this embodiment employs a table material length adjustment method.

Therefore, when the control panel 22 determines that the horizontal balance has been lost based on the detection signal of the level sensor 27, the left-right operating electric chenoblock 24 is rotated. For example, if it is determined that the horizontal beam 26 is lower on the right side in the figure, the left-right operating electric cheno block 24 is rotated counterclockwise so that the right side of the hanging chino 25 becomes shorter and the left side becomes longer.

A clamp is attached to the horizontal beam 26 to hold the suspended load, but this clamp is also replaced as appropriate depending on the condition of the suspended load. Can be automated.

Note that the present invention is not limited to the above embodiments, and various modifications are possible.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the adjustment device is activated by the inclination detection signal of the level sensor to control the inclination of the hanging equipment and horizontally adjust the suspended load. At the same time, leveling is automatically performed, and the level is automatically adjusted by level detection regardless of the shape of the suspended load, making it possible to efficiently shorten the lifting cycle time.

Furthermore, since the horizontal adjustment of the suspended load is automatically performed, there is no need for the worker to approach the suspended load, and work safety can be improved.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the automatic leveling device for crane-suspended loads according to the present invention, and FIG. 2 is a diagram showing another embodiment of the automatic leveling device for crane-suspended loads according to the present invention. . l...Battery and control panel, 2 and 8...Kumquat wire, 3...Motor with reducer, 4 and 9...Base wire mounting bracket, 5 and 10...Level sensor, 6 and 11・
・Screw screw, 7 and 12 river guide beam, 13・
... Auto clamp, 14... Hanging load. Ml Drawing applicant: Shimizu Corporation Agent Patent attorney Ryukichi Abe (5 others) 14 65
Sujimachi

Claims (3)

[Claims] (1) The hanging devices are assembled in directions orthogonal to each other, a level sensor is attached to the lifting devices, and the tilt of the hanging devices is controlled by the inclination detection signal of the level sensor to horizontally adjust the suspended load. Automatic leveling device for crane-lifted loads. (2) The automatic leveling device for crane-hanging loads according to claim 1, characterized in that the suspension point position of the mounting wire is moved and adjusted using a screw. (3) The automatic leveling device for a load suspended by a crane according to claim 1, wherein the horizontal length of the mounting wire is adjusted.