JPH02115457A - Lifting control device for curing net - Google Patents

Abstract

PURPOSE:To lift or lower a net while correcting its inclination by providing a clinometer on a net beam and controlling a motor in a device lifting or lowering the curing net provided around a tower-shaped structure by the motor drive. CONSTITUTION:A curing net 2, a net beam 3 suspending the net 2, and wires 5 which are connected to the beam 3 and capable of being wound by individual motors 4 are provided to lift or lower the net 2. A clinometer 6 measuring the inclination angle between other support points is provided at one of support points of the beam 3 and the wires 5. When the measured value of the clinometer 6 exceeds the allowable value, signals to individually wind or deliver the wires 5 are applied to the motors until the allowable range is attained, and the beam 3 is horizontally maintained. The inclination of the net 2 is automatically corrected, and it can be smoothly lifted or lowered.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a lifting and lowering control device for a protective net.
In particular, the present invention relates to a curing net lifting control device that can automatically control the inclination of the curing net.

[Prior Art and Problems to be Solved by the Present Invention] A curing net is sometimes raised and lowered along the outer periphery of a building's outer wall or tower-like structure. In this case, the curing net may be tilted. This inclination becomes a hindrance when raising and lowering the curing net smoothly, and the curing net must be raised and lowered while maintaining its overall height horizontally. In particular, in a tower-like structure, if there is such an inclination, it will not be possible to raise and lower a protective net that goes up and down in a way that surrounds the area.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a curing net lifting control device that can automatically correct the inclination of the curing net and raise and lower the curing net.

[Means to solve the problem]

The raising/lowering control device for a curing net according to the present invention has the following configuration.

It has a curing net, a net beam for suspending the curing net, and a plurality of wires connected to the net beam, each of which can be hoisted by a separate motor. The curing net may be made of synthetic resin fibers or the like, and the net beam may be a steel pipe or the like, and may be linear, ring-shaped, or assembled into a rectangular shape.

By winding up or letting out this wire with a motor, the curing net is pulled up or down together with the net beam. That is, the motor is mounted on a high-rise building, tower-like structure, etc., and the net beam is connected to the wire coming out from the motor. The motor is driven to raise and lower the curing net together with the net beam.

An inclinometer is attached to the net beam. The inclinometer measures the angle of inclination from the inclinometer to the connection of the wire with the net beam. When the measured value of this inclinometer exceeds a certain value, wait until the measured value of the calculator falls within the certain value range (within an angle range of plus or minus 1.5 degrees in the vertical direction (3 degrees in total)). An output signal is provided to the motor to wind up or unwind the row of wires. The trailing motor is a motor that is delayed in winding when it is rising, and a motor that is delayed in its unwinding when it is descending.

A limit switch may be provided above the structure, and the net beam may be stopped when it comes into contact with the limit switch.

[Example] The present invention will be described in detail below based on an example shown in the drawings.

In the figure, l is a cylindrical tower-like structure, and a curing net 2 is arranged around this structure 1.

The curing net 2 is connected to a net beam 3 formed in a ring shape by a steel pipe, and the net beam 3 is connected to a wire 5 fed out from a motor 4 provided on the tower-like structure 1. Each wire 5 is fed out from a separate motor 4 and connected at three points on the net beam 3.

The net beam 3 is provided with an inclinometer box 6, which is placed near one of the three points A, B, and C where the wire 5 and the net beam 3 are connected.

The inclinometer box 6 is equipped with an inclinometer, and the other two points A,
Two pieces are used to measure the inclination angle with C.

An operation panel 7 is arranged on the tower-like structure l, and receives input signals from a calculator housed in the inclinometer box 6.
It is connected to both to send an output signal to the motor 4. Each operation switch is arranged on the front panel of the operation panel 7.

A is a horizontal indicator light for displaying the inclination of the net beam 3, b is an emergency stop button, C is an abnormality indicator light, and d is a power indicator lamp. e is a button for automatic raising and interlocking raising for automatically controlling each motor to raise, or for raising all motors 4 in conjunction with each other;
f is a button for automatic lowering and interlocking lowering for lowering. g automatically controls all motors 4,
This is a switch for selecting whether to operate all the motors 4 in conjunction with each other or to operate each motor 4 separately. h is an individual raising button for operating each motor 4 separately, and i is an individual lowering button for lowering.

When the changeover switch g is set to automatic control,
Upon receiving the input signal from the inclinometer, the calculator automatically sends an output signal to each motor 4. When linked, all motors 4 are operated by the button e or r, and the motors 4 are operated independently. When set to , each motor is operated separately by the h or i button.

A plurality of limit switches 8 are provided above the tower-like structure 1, and when the net beam 3 comes into contact with any one of the limit switches 8, the net beam 3
stops.

Next, the raising and lowering of the curing net 2 will be explained.

FIG. 9 shows a flowchart of the control state when the curing net 2 is raised.

Set the changeover switch g to automatic and press the interlocking rise button e. All motors 4 are activated and wire 5
is rolled up to raise the curing net 2 together with the net beam 3. The measurement value from the inclinometer is received by the calculator,
If the measured value is less than the predetermined value θ, the net beam 3 continues to rise and stops when the net beam 3 contacts the limit switch 8. In the embodiment, the set value θ is set to 1.5 degrees.

When the measured value exceeds a predetermined value θ, all motors 4 are stopped and an output signal is sent to the motors 4 to raise the connection point A between the lowest wire 5 and the net beam 3 to the highest connection point C. .

Next, connect the second high connection point B to the highest connection points C and A.
An output signal is sent to the motor 4 to raise the temperature up to .

After the measured value falls within a certain range, all motors 4 are operated to raise the motor until it contacts the limit switch 8.

When the changeover switch g is activated and the interlocking raising button e is pressed, all the motors 4 are operated and raised, and continue to rise until they contact the limit switch 8.

If the changeover switch g is set alone and the individual raising button h is pressed, each motor 4 operates independently to raise the net beam 3.

Even if the net beam 3 stops rising when it comes into contact with the limit switch 8, the part that is not in contact with the limit switch 8 is lower than the other parts, and the horizontal indicator light a is turned on by setting the changeover switch g alone. All you have to do is press the individual raising button h while watching.

Next, the lowering of the curing net 2 will be explained.

FIG. 10 shows a flowchart of the control state when the curing net 2 is lowered.

Set the changeover switch g to automatic and press the interlocking lowering button f. All the motors 4 operate to feed out the wire 5 and lower the curing net 2 together with the net beam 3. If the measured value is less than the predetermined value θ, it continues to descend. When the measured value θ exceeds a predetermined value, all motors 4 are stopped, and the motor 4 is moved so that the connection point C between the highest wire 5 and the net beam 3 descends to the lowest connection point A.
sends the output signal. Next, an output signal is sent to lower the higher connection point B to the position of connection points A and C. After the measured value falls within a certain range, all motors 4 are activated to lower the position.

By interlocking the changeover switch g and pressing the interlocking lowering button f, all the motors 4 are operated and lowered.

When the changeover switch g is set alone and the individual lowering button is pressed, each motor 4 operates independently to lower the net beam 3.

〔Effect of the invention〕

■ When raising and lowering the curing net, the net beam that connects the nets is automatically maintained horizontally, so there is no hindrance when the curing net is raised and lowered smoothly.

@ If a limit switch is installed above the structure, the motor will stop when it comes into contact with the limit switch, preventing over-winding of the wire.

[Brief explanation of drawings]

Fig. 1 ([) to (1) are explanatory diagrams of the raised state of the curing net, Fig. 2 is a perspective view of the upper part of the curing net, Fig. 3 is a plan view of the net beam, and Fig. 4 is a net beam connected by wire. Figure 5 is a side view of the suspended state, Figure 5 is its plan view, Figure 6 is a perspective view of the upper part of the structure, Figure 7 is a schematic diagram of the lifting device, Figure 8 is a front view of the operation panel, Figure 9 1 and 10 show a flowchart for raising and lowering the protection net. l... Structure, 2... Curing net, 3... Net beam, 4... Motor, 5... Wire, 6... Inclinometer box, 7... Operation panel, 8... ··Limit switch. Figure Figure Figure Figure

Claims (2)

[Claims] (1) Consisting of a curing net, a net beam for suspending this curing net, and a plurality of wires that can be wound up by separate motors connected to this net beam, and by winding up or letting out the wires by the motor, curing can be carried out together with the net beam. When pulling up or lowering the net, an inclinometer is attached to the net beam, and when the measured value of this inclinometer exceeds a certain value, the trailing wire is hoisted up or lowered until the measured value is within a certain value range. A lifting and lowering control device for a curing net, characterized in that it is equipped with a calculator that provides an output signal for feeding to a motor. (2) A lifting control device for a curing net according to claim (1), characterized in that a limit switch is provided above the structure, and the net beam is stopped when it comes into contact with the limit switch.