KR200447879Y1 - Non contact interface apparatus for hoist - Google Patents

Abstract

The present disclosure relates to a contactless interface device of a hoist, comprising: a power supply unit for supplying power used in the hoist; A button unit for generating and outputting, an interface unit for generating and outputting interface signals for rising / falling, low speed, medium speed, high speed and stop operation of the hoist according to key signals inputted from the button unit, and an interface input from the interface unit Inverter which controls the rotational speed of the motor for hoist rise / fall, low speed, medium speed, high speed and stop according to the signal, and the hoist rise / fall, low speed, medium speed, high speed and stop according to the rotation speed control of the inverter It consists of a motor that performs the driving for transmitting the driving force to the hoist.

Therefore, the present invention provides an effect that can greatly increase the time and work efficiency according to the cargo transport operation.

Solid State Interface, Hoist, Inverter

Description

Non contact interface apparatus for hoist

The present invention relates to a contactless interface device.

More particularly, the present invention relates to a hoist contactless interface device that allows the operation of the hoist to be controlled through a contactless interface.

In general, hoists are equipments used for transporting cargo, mechanical disassembly and assembly in factories, railway stations, mold factories, foundries, etc., and are devices that lift or lift heavy objects and move them to a desired position by operating a motor. to be.

The hoist is composed of a prime mover, a gear reduction device, a brake, and the like, and a hook is attached to the end of a load chain to lift or lift a load and move laterally (left and right) to a desired position.

Hoists are generally divided into electric hoists and air hoists. Electric hoists are small electric motors, traction with planetary gear accelerators, electromagnetic brakes that hold cargo, and unloading cargo. It is a small hoist which concentrates the load brake which regulates the speed of air in a narrow container space. It is attached to the end of the jib or the rail of the lower flange of the I-beam is moved on the rails. It is used to transport it down, and there are ways to operate the motor by operating the rope on the ground, to move the button, and to operate it remotely. And air hoists are mainly used in places to prevent the risk of gas explosions, such as coal mines and chemical plants.

In addition, the hoist can be divided into many types according to the structure of the machine and the place to be used, such as the electric hoist, air hoist, low-head type used in the low ceiling, double rail type traveling on two rails, and the like.

However, in the conventional hoist as described above, since the control signal is generated by using a relay type or the like when generating a control signal according to the rising or falling operation of the operator, the equipment cannot be miniaturized and the life of the equipment is relatively low. Due to the short material cost, labor costs were high, and the wiring was complicated, making it difficult to manufacture small and lightweight, as well as a lot of power consumption, there was a problem that a lot of noise, such as electromagnetic waves are generated.

An object of the present invention is to provide a hoist contactless interface device that can control the operation of the hoist through a contactless interface to solve the above-mentioned problems.

Another object of the present invention is to generate an operation signal of an operator controlling the operation of the hoist in a plurality of stages and to transmit it to an inverter that controls the rotational speed of the motor by generating an operation signal of the contactless interface element, thereby completely separating the input and output voltages, thereby causing an abnormal voltage. To provide a hoist contactless interface device to protect the inverter against.

The contactless interface device of the hoist according to the present invention for achieving this object, the hoist up / down, low speed, medium speed, high speed, stop operation by the power unit for supplying power used in the hoist, and the operator performing the hoist drive A button unit for generating and outputting a key signal according to the present invention, an inverter for controlling the rotational speed of the motor for raising / falling, lowering, low speed, medium speed, high speed, and stopping of the hoist according to the operation signal of the button part and the rotation speed of the inverter In a hoist including a motor that transfers driving power to the hoist by driving for hoisting / lowering, low speed, medium speed, high speed, and stopping of the hoist under control, the hoist is raised / lowered according to a key signal input from a button unit. Contactless interpolator that generates interface signals for low speed, medium speed, high speed, and stop operation and outputs them to the inverter Further comprising: a device, non-contact interface unit, with the increase key signal input from the button unit to generate an interface signal for the hoist slow rise first solid-state device for outputting to the inverter; A second contactless element for generating an interface signal for low speed hoist lowering according to a falling key signal input from a button unit and outputting the interface signal to the inverter; A third contactless element for generating an interface signal for driving the medium speed of the hoist being raised or lowered according to the medium speed key signal input from the button unit and outputting the interface signal to the inverter in a state where a low speed up or down operation of the hoist is being performed; A fourth contactless element for generating an interface signal for high-speed driving of the hoist being raised or lowered according to the high-speed key signal input from the button unit while the low-speed raising or lowering operation of the hoist is being performed and outputting it to the inverter; And a fifth non-contact point which generates and outputs an interface signal for stopping the driving of the hoist according to the stop key signal input from the button unit while the low speed rising or falling, medium speed, and high speed driving of the hoist are being performed. Characterized in that it comprises a device.

As described above, according to the contactless interface device of the hoist of the present invention, a conventional hoist used as a relay type because the signal generated by the operator's button operation is generated through the contactless interface element and transmitted to the inverter to control the motor drive. Compared with, the service life is semi-permanent, small size, light weight, small size and light weight, and close proximity to the inverter can prevent malfunctions due to noise, and simple wiring, reducing material cost and labor cost, Electricity can be saved, A / S is easy through blocking of parts, and the input and output are completely separated to protect the inverter from abnormal voltage.

Hereinafter, with reference to the accompanying drawings will be described in detail the hoist speed regulating device of the present invention.

1 is a view showing a hoist to which a contactless interface device of the present invention is applied, FIG. 2 is a block diagram schematically showing the configuration of a contactless interface device of a hoist according to the present invention, and FIG. 3 is a detailed circuit diagram of FIG. .

As shown, the hoist contactless interface device according to the present invention includes a power supply unit 10, a button unit 20, a contactless interface unit 30, an inverter 40, a motor 50, and the like.

The power supply unit 10 supplies power for use in each component of the hoist such as the contactless interface unit 30, the inverter 40, the motor 50, and the like.

The button unit 20 generates key signals according to hoist up / down, low speed, medium speed, high speed, and stop operation by an operator performing hoist driving, and outputs the key signals to the interface unit 30.

The contactless interface unit 30 generates and outputs an interface signal for an up / down, low speed, medium speed, high speed, stop operation of the hoist according to the key signal input from the button unit 20, and outputs it to the inverter 40.

The inverter 40 controls the rotation speed of the motor 50 for the rise / fall, low speed, medium speed, high speed, and stop of the hoist according to the interface signal input from the contactless interface unit 30.

At this time, the above-described contactless interface unit 30 generates the interface signal for hoist low speed rising in accordance with the rising key signal input from the button unit 10 and outputs the first contactless element 31 to the inverter 40. And a second contactless element 32 for generating an interface signal for hoist low speed falling in response to the falling key signal input from the button unit 10 and outputting the interface signal to the inverter 40, and a low speed raising or lowering operation of the hoist. A third contactless element 33 for generating an interface signal for driving the medium speed of the hoist being raised or lowered according to the medium speed key signal input from the button unit 10 and outputting the interface signal to the inverter 40 in the state of being performed; Interface for high speed driving of hoist which is being raised or lowered according to the high speed key signal input from the button unit 10 while the low speed rising or lowering operation of the hoist is being performed. The fourth contactless element 34 for generating a signal and outputting the signal to the inverter 40, and the stop key signal input from the button unit 10 in the state where the hoist's low speed rise or fall, medium speed, and high speed drive are being performed. As a result, it comprises a fifth contactless element 35 which generates an interface signal for stopping the driving of the hoist and outputs it to the inverter 40.

The motor 50 transmits the driving force to the hoist by performing driving for raising / lowering, low speed, medium speed, high speed, and stopping of the hoist according to the rotation speed control of the inverter 40.

Next, the operation process of the hoist speed regulating device according to the present invention configured as described above will be described in detail.

First, when the operator who drives the hoist connects the cargo to be moved to the hook provided at the end of the load chain or the like, and then selects the lift button to raise the hoist, the operator according to the lift key signal generated by the button unit 10 The first contactless element 31 of the contactless interface unit 30 is driven, and the inverter 40 controls the forward rotation (low speed) speed of the motor 50 in accordance with the interface signal of the contactless interface unit 30. To raise the hoist.

In this state, when the operator selects the medium speed or high speed button to change the hoist speed of the hoist to medium speed or high speed, the third of the contactless interface part 30 according to the medium speed or high speed key signal generated from the button part 10. The contactless element 33 or the fourth contactless element 34 is driven, and the inverter 40 controls the rotation speed of the motor 50 at medium or high speed according to the interface signal of the contactless interface unit 30. Allow hoist to rise at medium speed or high speed.

The hoist should be lifted to various stages of low speed, medium speed, and high speed to lift the cargo and move laterally (left and right) to the desired position.

When the operator selects the down button to lower the hoist, the second contactless element 32 of the contactless interface unit 30 is driven according to the falling key signal generated by the button unit 10, and the contactless interface unit In accordance with the interface signal of 30, the inverter 40 performs the reverse rotation (low speed) speed control of the motor 50 to lower the hoist.

In this state, when the operator selects the middle speed or high speed button to change the lowering speed of the hoist to the medium speed or the high speed, the third of the contactless interface part 30 according to the medium speed or high speed key signal generated in the button part 10. The contactless element 33 or the fourth contactless element 34 is driven, and the inverter 40 controls the rotation speed of the motor 50 at medium or high speed according to the interface signal of the contactless interface unit 30. Allow hoist to descend at medium or high speeds.

Meanwhile, as described above, an abnormality may occur in the hoist during the three steps of the hoist's low speed, middle speed, and high speed, or an emergency stop of the hoist's rising / lowering operation may occur.

In this case, when the operator selects the stop button, the fifth contactless element 32 of the contactless interface unit 30 is driven according to the stop key signal generated by the button unit 10, and the contactless interface unit 30 is driven. In accordance with the interface signal of the) the inverter 40 currently stops the rotational speed control of the motor 50 is performed to immediately stop the hoist up or down operation.

Herein, while the present invention has been described with reference to the preferred embodiments, those skilled in the art will be able to vary the present invention without departing from the spirit and scope of the present invention as described in the following Utility Model Registration Claims. It will be understood that modifications and changes can be made.

1 is a view showing a hoist to which a contactless interface device of the present invention is applied,

2 is a block diagram schematically showing the configuration of a contactless interface device according to the present invention;

3 is a detailed circuit diagram of FIG. 2.

Explanation of symbols on the main parts of the drawings

10: power supply

20: button part

30: interface unit

40: inverter

50: motor

Claims (1)

A power supply unit for supplying power used in the hoist, a button unit for generating and outputting a key signal according to hoist up / down, low speed, medium speed, high speed, and stop operation by an operator performing a hoist drive, and an operation signal of the button unit According to the inverter to control the rotational speed of the motor for the hoist ascending / descending, low speed, medium speed, high speed, stop and the hoist according to the rotation speed control of the inverter In the hoist comprising a motor for performing a drive to transfer the driving force to the hoist, And a contactless interface unit for generating an interface signal for rising / falling, low speed, medium speed, high speed, and stop operation of the hoist according to the key signal input from the button unit and outputting the interface signal to the inverter. The contactless interface unit, A first contactless element which generates an interface signal for hoist low speed rising and outputs the interface signal to the inverter according to the rising key signal input from the button unit; A second contactless element for generating an interface signal for low speed hoist lowering according to a falling key signal input from the button unit and outputting the interface signal to the inverter; A third contactless element for generating an interface signal for driving the medium speed of the hoist being raised or lowered according to the medium speed key signal input from the button unit and outputting the interface signal to the inverter in a state where a low speed up or down operation of the hoist is being performed; A fourth contactless element for generating an interface signal for high-speed driving of the hoist being raised or lowered according to the high-speed key signal input from the button unit while the low-speed raising or lowering operation of the hoist is being performed and outputting it to the inverter; And A fifth contactless element which generates an interface signal for stopping driving of the hoist according to a stop key signal input from the button unit while low speed rise or fall, medium speed, and high speed driving of the hoist are output to the inverter; The contactless interface device of the hoist comprising a.

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