JPH08245162A - Load slinging attitude control method and device - Google Patents

Abstract

PURPOSE: To control the attitude of a load lifted by a crane hook, among others, to be freely by means of plural units of motor-driven traction machines, in this load slinging attitude control method and device. CONSTITUTION: As for this load slinging attitude control method and device, each motor-driven traction machine 30 connected to plural pieces fo wires 202 installed in a crane hook 201 of a crane 200A is operated with an remote controller, thereby controlling a load slinging attitude.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for controlling a suspended load posture, and more particularly to a novel method for freely controlling the suspended load posture by a crane hook of a crane via a plurality of electric tractors. Regarding improvement.

[0002]

2. Description of the Related Art Conventionally, as a means for controlling the lifting posture of this kind which has been used at the time of mounting building materials and installing equipment of a plant, a manual chain block or a lever block is used to control the mounting posture. I was going. In addition, when there was a large change in the ground cutting attitude and the installation attitude during lifting, the wire was temporarily placed in another temporary storage area and the wire length was manually adjusted.

[0003]

Since the conventional means for controlling the hanging posture is constructed as described above, there have been the following problems. That is, when a manual lever block is used, an operator has to enter on the suspended load or in the vicinity of a side portion or the like, which is an extremely dangerous work because it is a work at a high place. Further, the workability is poor, and the work may have to be carried out without being completely adjusted, which adversely affects the installation accuracy. In addition, such work requires close coordination and communication between the installation operator and the crane operator, and the work procedure is an extremely complicated process.

The present invention has been made to solve the above problems, and in particular, the posture of a load hoisted by a crane hook of a crane is freely controlled through a plurality of electric tractors. An object of the present invention is to provide a method and apparatus for controlling a suspended load posture.

[0005]

A method of controlling a hanging posture according to the present invention comprises operating an electric traction machine connected to a plurality of wires provided on a crane hook of a crane by using a remote control body. It is a method of controlling the suspension posture of a load by moving the chain of each electric traction machine.

More specifically, each of the electric traction machines is a method of remote control via radio.

A control device for a suspended load posture according to the present invention comprises a plurality of wires provided on a crane hook of a crane for suspending a load, an electric traction machine provided on each of the wires, and an electric traction machine of each of the electric traction machines. A remote operation body for controlling the operation, and the length of the front wire is changed by the operation of each of the electric traction machines.

More specifically, each of the electric traction machines has a chain connected to the wire, a chain winding mechanism for moving the chain via a sprocket, and a chain winding mechanism. The electric drive body is provided to rotate the sprocket, and the motor driver is provided to the electric drive body to control driving of the motor.

More specifically, each of the electric traction machines is configured to be remotely controlled by radio.

[0010]

In the method and apparatus for suspending a load according to the present invention, since each of the plurality of wires provided on the crane hook of the crane is provided with an electric traction machine, each of the electric traction machines can be remotely controlled by a remote control. By operating it, the withdrawal amount of the chain of each electric traction machine can be changed, and the distance between the load and each electric traction machine can be freely changed, and regardless of height or weather, it can be operated remotely and safely. The load can be easily lifted in any posture.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of a method and apparatus for controlling a hanging posture according to the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a state in which a load 200 consisting of stairs is hoisted, and a fixed hook 25 of an electric traction machine 30 is connected to a plurality of wires 202 provided on a crane hook 201 of a crane 200A. The chain hook 29 of the chain 22 of the machine 30 is connected to the connecting wire 203 wound around the load 200. Further, each electric traction machine 30 is configured to be remotely operated by the remote control body 60.

Next, the above-mentioned electric drive unit 30 used in the present invention will be specifically described. FIG. 2 is a configuration diagram schematically showing the overall configuration of the electric traction machine 30 according to the present invention. In FIG. 2, reference numeral 10 is an electric drive body having a built-in DC type motor 11.
1 is connected to a motor driver 14 having a switch 12 for starting and stopping the motor 11 and a rotation direction changeover switch 13, and the motor 11 and the motor driver 14 are configured to be driven by a secondary battery 15. ing. The motor driver 14 and the secondary battery 15 are the first wireless transceiver 5 having the first antenna 50a.
It is connected to 1a.

An overload protection portion 17 (for example, a well-known torque limiter structure) is connected to the motor 11 via a speed reducer 16. The overload protection portion 17 has a rotating coupling projection 17a protruding therefrom. It is provided.

The speed reducer 16 is provided with a rotation speed changeover switch 18, and the rotation speed changeover switch 18 is connected with a first tension display meter 19 of a display unit 100 connected to the motor driver 14. . The first tension display meter 19 is configured to calculate the motor-generated torque from the value of the current flowing through the motor 11 by the motor driver 14, and convert the torque into tension from the reduction ratio of the speed reducer 16 and the sprocket diameter of the sprocket 20 described later. Thus, the function can be obtained without using the torque sensor, and the scale conversion of the tension display meter 19 can be changed in conjunction with the change of the reduction ratio.

A well-known one-touch coupling 21 provided at one end 10a of the electric drive body 10 allows the electric drive body 10 to be detachably attached to a chain winding mechanism portion 23 having a chain 22 wound around the sprocket 20. A fixed hook 25 is rotatably attached via a rotation mechanism 26 to the handle portion 24 that is attached and hangs downward at one end 23a of the chain winding mechanism portion 23.

The one end 23a is provided with the coupling projection 17a.
Is provided with a coupling recessed body 27 which is connected to the sprocket 20 via a chain winding mechanism speed reducer 28, and which has one end 2 of the chain 22.
2a is composed of a free end, and a chain hook 29 is connected to the other end 22b. Although not shown, the chain winding mechanism speed reducer 28 is coupled to a mechanical brake that momentarily functions when the operation is stopped.

The traction machine 30 shown in FIG. 2 is constructed as shown in FIGS. 3 and 4, and the secondary battery 15 is detachably provided at the end of the handle portion 24. As the one-touch coupling 21 described above, a well-known structure of a ring slide type coupling is adopted as shown in FIGS. 3 and 4.

Further, in a state where the chain 22 is pulled by tension, even if the electric drive unit 10 is separated from the chain winding mechanism section 23, a mechanical brake ( (Not shown)
Therefore, the chain 22 is configured so as not to loosen. The switch 12 also serves as a start / stop command and a rotation speed setting command. When the switch 12 is inserted deeply, the rotation of the motor 11 becomes faster, and the rotation of the motor 11 is caused by the reduction gear 16, the overload protection unit 17, 17 on the connecting protrusion
a, 27 in the coupling concave portion, 28 speed reducer for the chain winding mechanism
The forward and reverse rotations of the sprocket 20 can be performed via the.

Further, the rotation speed changeover switch 18 is mechanically connected to the speed reducer 16 and can freely change the meshing combination of gears (not shown) therein. In this case, there are two stages. The first tension display meter 19 is configured to select a reduction gear ratio, and the display scale of the first tension display meter 19 can be switched in association with the rotation speed changeover switch 18.

The first wireless transmitter / receiver 51a is provided with a second operation member of a remote operation member 60 which is formed separately from the electric driving member 10.
The wireless transmitter / receiver 51b is wirelessly connected to each other via the antennas 50a and 50b. The remote controller 60 has a battery 61, a microcomputer 62 including a CPU, and the same display function as the first tension display meter 19. Having a second
A tension display device 19a, a rotation direction command switch 63 for giving a rotation direction command for the motor 11, and a plurality of the electric driving bodies 10 (in FIG. 1, a single unit is used, but a plurality is used).
And a selection switch 64 for freely selecting any of the above, the second wireless transceiver 51b is connected to the microcomputer 62, the battery 61 and the selection switch 64, and via the second wireless transceiver 51b. All information of the remote control body 60 is configured to be able to communicate with the electric traction machine 30 via the first wireless transceiver 51a.

The display unit 100 shown in FIG. 10 includes a power switch 101 for turning on / off a power source, a first display 102 showing a normal state of the power source driver 10, and a power source driver 10.
Is provided with a second display 103 indicating a charging alarm of No. 1, an LED display 104 including a summary display 104b indicating a summary and a direction of the chain 22 and a Yurume display 104a, and a summary / Yulm switch 104A interlocking with the LED display 104. In this case, all operating states of various operations of the power supply driver 10 are configured to be displayed on the display unit 100.

Next, the operation of suspending the load 200 under the crane hook 201 by using the electric towing machine 30 to change the posture will be described. First, the power switch 101 of the power source driver 10 is turned on, and the switch 1 for the motor is turned on.
2 is turned on and activated, and then the chain 22 of the chain winding mechanism 23 is connected to the connecting wire 203 below the load 200.
By operating the rotation direction command switch 63 of the remote control body 60 in a state where the chain hook 29 is locked and the fixed hook 25 is locked to the wire 202, the rotation direction command is sent to the microcomputer 62, the first , The second wireless transmitter / receiver 51a, 51b and the motor driver 14 to drive the motor 11, and the sprocket 20 is rotated through the speed reducer 16, the overload protection device 17, and the chain winding speed reducer 28 to move the chain 22. By winding up and operating each electric traction machine 30 simultaneously or individually, the load 2
The position of the suspension position of 00 can be controlled in any state. Therefore, the suspension posture can be changed by changing the distance of the chain 22 between each electric traction machine 30 and the load 200. The start / stop command is also issued from the remote control 60.

In the above-described case, the rotation direction of the chain 22 can be freely controlled remotely via the rotation direction command switch 63, and the tension of the chain 22 is displayed in the same manner by the tension display meters 19 and 19a. The tension state of the chain 22 can be checked in real time by the remote control 60.

Further, the normal state of the electric drive unit 10 is shown by the first display 102, and when the state of the battery 15 is a state to be charged, the second display 103 shows a charging alarm. Further, by selecting any one of the Simul / Yulm switches 104, either the Simul or Yulm display 104a or 104b by winding or returning the chain 22 is displayed by the LED.

Next, the structure shown in FIGS. 6 to 9 shows another embodiment of the electric traction machine according to the present invention. Using the first connector 51aA and the second connector 51bA corresponding to the machines 51a, 51b, the respective connectors 51aA, 5
The configuration is such that they are connected by a cable 70 between 1 bA, and other configurations and operations are the same as the configurations and operations shown in FIG. 1 to FIG. Omit it. The display unit 10 of the electric drive body 10
Each display indicated by 0 is also displayed on the remote control body 60,
When the remote control body 60 is not used, the electric drive body 1
The operation operation can be performed while watching the display unit 100 of 0. The chain 22 is not limited to the above-mentioned embodiment.
Can also be directly connected to the load 200.

[0026]

The method and apparatus for controlling the hanging posture according to the present invention can obtain the following effects. 1. Since the electric wire puller is provided on the wire of the load suspended on the crane, it is possible to eliminate the muscular work of the worker by driving the chain winding mechanism section by the electric drive body that operates remotely. Further, the posture can be freely controlled even when the load is suspended at a high place. 2. Each display (normal status, charging warning, LED display of Simul / Yulm, power switch) provided on the operation plate of the electric drive can display the operation and operation state of the electric drive. Safe operation can be performed while confirming the operation and operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an overall configuration of a suspended posture control device according to the present invention.

FIG. 2 is a configuration diagram showing the electric traction machine used in FIG.

FIG. 3 is a front view showing the actual configuration of FIG.

FIG. 4 is a right side view of FIG.

FIG. 5 is a perspective view showing a remote control unit.

FIG. 6 is a configuration diagram showing another embodiment of the electric traction machine according to the present invention.

FIG. 7 is a front view showing the actual configuration of FIG.

FIG. 8 is a right side view of FIG.

FIG. 9 is a front view showing an electric drive body.

FIG. 10 is a plan view of FIG.

[Explanation of symbols]

 10 Electric Drive 11 Motor 14 Motor Driver 20 Sprocket 22 Chain 23 Chain Winding Mechanism 60 Remote Control Unit 200 Load 200A Crane 201 Crane Hook 202 Wire

Claims (5)

[Claims] 1. A crane hook (201) for a crane (200A).
By operating the electric traction machine (30) connected to the plurality of wires (202) provided in the remote control body, the chain (22) of each of the electric traction machines (30) is moved to transfer the load. (200)
A method for controlling the suspended load posture, which comprises controlling the suspended posture. 2. The method according to claim 1, wherein each of the electric towing machines (30) is remotely operated via wireless. 3. The crane hook (201) of the crane (200A)
Multiple wires (20) for hanging a load (200)
2) and an electric traction machine (30) provided on each wire (202)
And a remote control body (60) for controlling the operation of each of the electric traction machines (30), and changing the suspension posture of the load (200) by the operation of each of the electric traction machines (30). A device for controlling a suspended posture, comprising: 4. The load provided on each of the electric traction machines (30)
A chain (22) connected to (200) and said chain (22)
A chain winding mechanism section (23) for moving the sprocket (20) through the sprocket (20), and an electric drive body (10) provided in the chain winding mechanism section (23) for rotating the sprocket (20). And a motor (1
4. The control device for the suspended posture according to claim 3, further comprising a motor driver (14) for controlling the drive of 1). 5. The lifting posture control device according to claim 3, wherein each of the electric traction machines (30) is configured to be remotely controlled by radio.