KR100444759B1 - A torque control apparatus of floodgate winch - Google Patents

Abstract

PURPOSE: A torque removal device and a control method of a water gate winch are provided to stop the operation of the water gate winch and to prevent breakage of the water gate by changing the advancing direction of a water gate when overload caused by malfunction of the water gate occurs, and to make the opening and shutting of the water gate smooth. CONSTITUTION: A torque removal device has an overload-sensing unit. The overload-sensing unit has a torque shaft(20) connected to an output shaft of a reduction gear unit reducing and transmitting the rotational force of a driving motor. A part of the torque shaft is built in a flange case(30) to isolate the part of the torque shaft from the outside and to seal up the part of the torque shaft. A sensing head(40) sensing torque of the torque shaft is arranged to the inside of the flange case. An output line(50) for transmitting a sensing signal sensed by the sensing head is arranged to a side of the flange case. An indicator for inputting normal torque or receiving and outputting the torque sensed by the sensing head by the output line is arranged to a side of the flange case. A control unit, receiving the torque sensed by the indicator, controls the right and reverse rotation of the driving motor.

Description

Torque Control Device and Control Method of Hydrostatic Hoist {A TORQUE CONTROL APPARATUS OF FLOODGATE WINCH}

The present invention relates to a hydrologic winch, and more particularly, when the gate is lowered (closed) and raised (opened) by the hydrostatic winch, various floats, dirt, or other matters on the lower, upper, and side surfaces of the gate. The present invention relates to a torque control device and a control method of a hydrostatic hoist that prevents damage to a hydrology and a damage to a mechanical device due to an overload generated in a winch when an obstacle is located.

Hydrological gates are used for various purposes. They play a role of confining water, such as reservoirs, for agricultural use, or preventing the flooding of agricultural lands by blocking the backflow of rivers. In this case, the gate is opened and closed to discharge water.

In general, the hydrologic winch for opening and closing the water gate includes a drive motor for generating a rotational force, a power control means for regulating the rotational force of the drive motor by a clutch, a deceleration means for reducing the rotational force of the drive motor, and the deceleration means. It is composed of a hydrologic lifting means for elevating the water gate with a decelerating rotational force, it is provided with a braking means for preventing the sudden drop of the hydrologic gate when the water gate descends.

In addition, the method of stopping the operation of the water gate has been generally applied by providing a limit switch corresponding to the upper and lower limit values when the water gate is raised and lowered.

However, there is a problem in that when the operation of the water gate can not be stopped due to a defect such as a limit switch, the water gate and the mechanical device are overloaded and broken.

In addition, since there is no special device for detecting obstacles on the lower, upper, and side surfaces of the gate when the gate is raised and lowered, there is a problem of causing damage to the machine under the influence of various floats, dirt, or other obstacles. .

In addition, the floodgates may be damaged, causing them to be unusable in case of emergency, resulting in enormous loss of property. Also, damages to the floodgates may lead to waste of repairs and budgets, resulting in a burden on the public. .

Accordingly, the present invention was devised to solve the above problems, an object of the present invention is to detect when the overload due to the malfunction of the hydrology to the hydropower unit to stop the operation of the hydropower unit or to change the direction of the gate It is to provide a torque control device and a control method of the hydrostatic winch to prevent the damage of the gate and to facilitate the opening and closing of the gate.

The configuration of the present invention for achieving the above object is a drive motor for generating a rotational force, power interruption means for regulating the rotational force of the drive motor by a clutch or the like, deceleration means for reducing the rotational force of the drive motor, and the deceleration means In the hydrologic lifting device comprising a hydrologic lifting means for elevating the hydrologic gate with a decelerating rotational force, and a braking means for preventing a rapid descending of the hydrologic gate when the hydrologic gate descends, both ends are coupled to the output shaft of the deceleration means. A torque shaft, a flange case surrounding the outer circumferential surface of the torque shaft to seal a part of the torque shaft from the outside, and a sensing head provided on an inner surface of the flange case to sense a rotational speed of the torque shaft; Output line for transmitting the sensing signal sensed by the sensing head is provided on one side of the flange case And a controller configured to receive a sensing signal sensed by the sensing head and output the detected signal, and a controller to control the rotational direction of the driving motor by comparing the torque output by the indicator with a normal torque. It features.

1 is a side view showing a hydrologic winch equipped with a torque control device according to the present invention;

Figure 2 is an internal configuration showing a hydrostatic winch equipped with a torque control device according to the present invention,

3 is a cross-sectional view showing a torque control device according to the present invention;

4 is a cross-sectional view taken along line AA of FIG. 3;

Figure 5 is a system diagram showing the torque control method of the hydro-winder according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: drive motor 20: torque shaft

30: flange case 40: sensing head

50: output line 60: indicator

70: control unit (PLC)

Hereinafter, with reference to the accompanying drawings will be described in detail the torque control device of the hydro-winder of the present invention.

1 is a side view showing a hydrologic winch equipped with a torque control device according to the present invention, Figure 2 is an internal configuration showing a hydrologic winch equipped with a torque control device according to the present invention, Figure 3 is a torque according to the present invention 4 is a cross-sectional view illustrating a control device, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 5 is an operating system diagram illustrating a torque control method of a hydrostatic winch according to the present invention.

As shown in the figure, the present invention further includes an overload detecting means for detecting a malfunction of the hydrologic gate to stop the operation of the hydrostatic gate.

The overload detection means has a torque shaft 20 connected to the shaft on the output shaft of the deceleration means for reducing and transmitting the rotational force of the drive motor 10, and a portion of the torque shaft 20 is disconnected from the outside to seal the In the flange case (30).

The inner surface of the flange case 30 is provided with a sensing head 40 for sensing the torque of the torque shaft 20.

In general, the torque sensing means is composed of a magnetic shaft and a sensing head for detecting a torque change in the shaft characteristics (rotational speed), which is generated by the rotation of the shaft when a magnetic field is formed around the shaft and the circuit and torque are applied. By measuring the change in the magnetic field to detect the torque.

On the other hand, one side of the flange case 30 is provided with an output line 50 for transmitting a sensing signal sensed by the sensing head 40, and also inputs the normal torque amount or the sensing head 40 Control unit (PLC) 70 having an indicator 60 for receiving and outputting the amount of torque sensed by the output line 50, and receiving the amount of torque sensed by the indicator 60. ) Controls the forward and reverse rotation of the drive motor 10.

According to the present invention configured as described above, after the administrator inputs the normal torque amount to the indicator as shown in the operating system diagram, the hydrological lifting device is used to lift and lower the gate.

That is, when the sensing head detects an overload due to a change in the rotational speed of the torque shaft during the ascending and descending of the floodgate due to the driving of the motor, the indicator receives the output by the output line and outputs it, and the controller PLC is connected to the indicator. The amount of torque sensed by the controller is input and compared with the set torque, and the motor rotates in the reverse direction. The direction of the floodgate is lowered for an arbitrary time (approximately 10 seconds) and then elevated again.

At this time, when the overload of the sluice is detected again, the ascending and descending of the sluice may be repeated as many times as the set number of times by the operator changing the rotation direction of the motor set in advance.

In other words, when the gate is not opened or closed by foreign matter during the ascent of the gate, by repeatedly setting and descending the gate by a predetermined number of times, the foreign body repeatedly interferes with the foreign material to be swept away in the water stream.

As described above, the present invention detects when an overload occurs due to a malfunction of the gate to the hydro-winder and stops the operation of the gate-lifter, or switches the direction of the gate or repeats it several times to prevent damage to the gate and damage to the mechanical device. In addition, there is an effect to enable the smooth operation of the descending,

It can be unmanned by the fully automatic hydrogenerator and improves the management efficiency by reducing labor cost, and it is easy to install and repair by installing at the end of drive motor and reducer, and it has the effect of having good compatibility with the existing electric hoist.

Claims (2)

delete The amount of torque generated when the floodgate is raised or lowered due to the driving of the drive motor is measured, and the overload is sensed in comparison with the normal torque input. When the overload is detected by the overload detection process, the rotation direction of the drive motor is switched to change the flood gate. In the torque control method of the hydrowinder for reverse movement for a certain time, A hydromechanical station repetition process of repeating the ascending and descending of the hydrograph for a predetermined time after the hydromechanical station moving process for a predetermined time; When the overload of the gate is removed through the hydrological station repetition process, the hydrostatic lifter torque control method characterized in that the hydrostatic lifting step of lifting and lowering the gate to reach the desired position to stop the drive of the drive motor.