CN111332971A - A speed regulation control device suitable for mining infinite rope winch - Google Patents

Abstract

The invention relates to a speed regulation control device suitable for a mining endless rope winch, which comprises a power supply transformer, a low-voltage feed cabinet, a PLC control operation integrated box, a variable frequency speed regulation system, a motor and mechanical equipment arranged on a track, wherein the output end of the power supply transformer is connected with the input end of the low-voltage feed cabinet, the output end of the low-voltage feed cabinet is connected with the input end of the variable frequency speed regulation system, the output end of the variable frequency speed regulation system is connected with the output end of the motor, and the motor is connected with the mechanical equipment. According to the speed regulation control device suitable for the mining endless rope winch, the working efficiency of the motor is regulated through the variable frequency speed regulation system, the moving speed of mechanical equipment is regulated, meanwhile, the speed measurement system is utilized to detect the moving speed of the mechanical equipment, if the moving speed of the mechanical equipment is found to be abnormal, the electric speed regulation device is driven to stop the mechanical equipment and detect the mechanical equipment, and the running safety of the equipment is greatly improved.

Description

A speed regulation control device suitable for mining infinite rope winch

technical field

The invention belongs to the technical field of speed regulation control of an infinite rope winch, and in particular relates to a speed regulation control device suitable for a mining infinite rope winch.

Background technique

The infinite rope winch is a simple, efficient and safe underground auxiliary transportation tool commonly used in coal mines. It has a long transportation distance, can adapt to variable slopes and multi-curve roadways, and simplifies transportation links and equipment. In the past few years, the infinite rope winch has been well applied and popularized in coal mines.

At present, the infinite rope winch realizes speed regulation and forward and reverse control through the mining inverter; brakes are realized through the working brake. During the application process, it is found that when the current infinite rope winch system starts the winch and releases the working brake at the same time under the condition of large slope and heavy load, the torque of the main motor controlled by the inverter cannot reach the maximum, and the winch will slip. The slope phenomenon can easily lead to the occurrence of safety accidents.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a speed regulating control device suitable for mining infinite rope winches with simple structure and reasonable design in order to solve the above problems.

The present invention realizes above-mentioned purpose through following technical scheme:

A speed regulation control device suitable for a mining stepless rope winch, including a power supply transformer, a low-voltage feeder cabinet, a PLC control and operation integrated box, a frequency conversion speed regulation system, a motor and mechanical equipment arranged on a track. The output end is connected with the input end of the low-voltage feeder cabinet, the output end of the low-voltage feeder cabinet is connected with the input end of the frequency conversion speed regulation system, the output end of the frequency conversion speed regulation system is connected with the output end of the motor, the motor Connected with mechanical equipment, the mechanical equipment is provided with a speed measurement adjustment system, and the speed measurement adjustment system is electrically connected with the PLC control and operation integrated box;

The speed measurement adjustment system includes an electric speed adjustment device and a speed measurement system, and the speed measurement adjustment system is arranged between the mechanical equipment and the track.

As a further optimized solution of the present invention, the speed measurement system includes a reader provided on the mechanical equipment and several RFID tags provided on the side of the track, and the several RFID tags are equally spaced on the side of the track.

As a further optimized solution of the present invention, the frequency conversion speed regulation system includes a filter and a frequency converter, the input end of the filter is connected to the output end of the low-voltage feeder cabinet, and the output end of the frequency converter is connected to the input end of the motor connect.

As a further optimized solution of the present invention, the PLC control and operation integrated box is provided with a PLC system, a hardware circuit and an operating system, the PLC system is connected with the speed measurement and regulation system, and the hardware circuit is connected with the frequency converter.

As a further optimized solution of the present invention, a leakage communication system is externally connected to the PLC control and operation integrated box.

The beneficial effects of the present invention are:

1) The present invention controls the working output of the frequency converter through the PLC control operation integrated box, so as to achieve the control of the moving speed of the motor-driven infinite rope winch. Once it is found that the moving speed of the infinite rope winch is abnormal or inconsistent with the speed that the output power of the motor should reach, the movement of the infinite rope winch is limited by the wireless control of the electric speed control device, and the motor is stopped at the same time. Timely inspection and maintenance of the infinite rope winch and each connected drive part can greatly increase the safety of the entire device;

2) The present invention installs RFID tags equidistantly on the side of the track, then detects the tags through the reader and transmits the data to the PLC control and operation integrated box for display and data comparison, so that the running speed of the device can be understood in real time, and Make comparisons to prevent unexpected situations in the operation of the device, and the safety is higher;

3) The present invention has the advantages of simple structure, high stability, reasonable design and easy realization.

Description of drawings

FIG. 1 is a block diagram of the overall structure of the present invention.

In the figure: 1. Power supply transformer; 2. Low-voltage feeder cabinet; 3. PLC control and operation integrated box; 301, PLC system; 302, hardware circuit; 303, operating system; 4, frequency conversion speed regulation system; 401, filter; 402. Frequency converter; 5. Motor; 6. Mechanical equipment; 7. Speed measuring and regulating system; 701. Electric speed regulating device; 702. Speed measuring system; 8. Leakage communication system.

Detailed ways

The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and should not be construed as limiting the protection scope of the application. Those skilled in the art can The above application content makes some non-essential improvements and adjustments to this application.

Example 1

As shown in Figure 1, a speed regulation control device suitable for a mining infinite rope winch includes a power supply transformer 1, a low-voltage feeder cabinet 2, a PLC control and operation integrated box 3, a frequency conversion speed regulation system 4, a motor 5, and a For the mechanical equipment 6 on the track, the output end of the power supply transformer 1 is connected to the input end of the low-voltage feeder cabinet 2, the output end of the low-voltage feeder cabinet 2 is connected to the input end of the frequency conversion speed regulation system 4, and the output end of the frequency conversion speed regulation system 4 is connected. The end is connected with the output end of the motor 5, the motor 5 is connected with the mechanical equipment 6, and the mechanical equipment 6 is provided with a speed measurement adjustment system 7, and the speed measurement adjustment system 7 is electrically connected with the PLC control and operation integrated box 3;

The speed regulation system 7 includes an electric speed regulation device 701 and a speed measurement system 702. The speed regulation system 7 is arranged between the mechanical equipment 6 and the track. The electric speed regulation device 701 can use an electric brake to control the movement of the mechanical device 6. When the speed measuring system 702 detects that the moving speed of the mechanical device 6 is abnormal, the movement of the mechanical device 6 can be restricted to prevent unexpected situations;

The speed measurement system 702 includes a reader provided on the mechanical device 6 and a number of RFID tags provided on the side of the track. The several RFID tags are equally spaced on the side of the track. The mechanical device 6 is driven by the motor 5 and the steel cable. Moving on the track, the reader on the mechanical device 6 can detect the equidistant RFID tags in real time during the movement process, calculate the number of RFID tags detected within a period of time to calculate the movement, and divide the detected movement by the time. The real-time running speed of the mechanical equipment 6 is measured. The shorter the detection time interval and the shorter the time period, the higher the accuracy of the test and the higher the safety of the entire device;

The frequency conversion speed regulation system 4 includes a filter 401 and a frequency converter 402. The input end of the filter 401 is connected to the output end of the low-voltage feeder cabinet 2, and the output end of the frequency converter 402 is connected to the input end of the motor 5. The filter 401 is inside the box. It mainly includes input reactor for filtering. For high-power inverter, it may also be equipped with an output filter. Inverter 402 is the core of frequency conversion and speed regulation of the infinite rope winch, and its interior is composed of rectifier, DC filter and inverter;

The PLC control and operation integrated box 3 is provided with a PLC system 301, a hardware circuit 302 and an operating system 303. The PLC system 301 is connected to the speed measurement and adjustment system 7, and the hardware circuit 302 is connected to the frequency converter 402. In a ventilated, non-corrosive gas chamber, it is best to place it on a cement platform or steel support above the ground. Keep a distance of about 0.5-1m from the back of the device to the wall, and keep a distance of more than 1.5m between devices to facilitate heat dissipation and wiring. The distance between power equipment (such as transformer, switch, filter 401, inverter 402, motor 5) and control equipment (PLC control and operation integrated box, leakage communication system) should be as far as possible to avoid interference;

The PLC control and operation integrated box 3 is externally connected with a leakage communication system 8 to increase system security.

It should be noted that the working output of the inverter 402 is controlled by the PLC control operation integrated box 3, so as to achieve the control of the moving speed of the motor 5 to drive the infinite rope winch. Real-time detection of the moving speed of the infinite rope winch, once it is found that the moving speed of the infinite rope winch is abnormal or inconsistent with the speed that the output power of the motor 5 should achieve, the wireless control of the electric speed regulating device 701 is used to limit the movement of the infinite rope winch, and At the same time, the work of the motor 5 is stopped, and the infinite rope winch and each connected driving part are detected and maintained in time, which can greatly increase the safety of the operation of the entire device.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention.

Claims (5)

1. A speed regulation control device suitable for a mining infinite rope winch, comprising a power supply transformer (1), a low-voltage feeder cabinet (2), a PLC control and operation integrated box (3), a frequency conversion speed regulation system (4), a motor (5) and a mechanical device (6) arranged on the track, the output end of the power supply transformer (1) is connected to the input end of the low-voltage feeder cabinet (2), and the output end of the low-voltage feeder cabinet (2) is connected with the input end of the frequency conversion speed regulation system (4), the output end of the frequency conversion speed regulation system (4) is connected with the output end of the motor (5), and the motor (5) is connected with the mechanical equipment (6), which It is characterized in that: the mechanical equipment (6) is provided with a speed measuring and adjusting system (7), and the speed measuring and adjusting system (7) is electrically connected with the PLC control and operation integrated box (3); The speed measuring and regulating system (7) comprises an electric speed regulating device (701) and a speed measuring system (702), and the speed measuring and regulating system (7) is arranged between the mechanical equipment (6) and the track. 2. A speed control device suitable for a mining infinite rope winch according to claim 1, characterized in that: the speed measurement system (702) comprises an interpreter provided on the mechanical equipment (6) and a Several RFID tags on the side of the track, and several RFID tags are equally spaced on the side of the track. 3. A speed control device suitable for a mining infinite rope winch according to claim 1, characterized in that: the frequency conversion speed control system (4) comprises a filter (401) and a frequency converter (402), The input end of the filter (401) is connected with the output end of the low-voltage feeding cabinet (2), and the output end of the frequency converter (402) is connected with the input end of the motor (5). 4. A speed regulating control device suitable for mining infinite rope winches according to claim 1, characterized in that: the PLC control and operation integrated box (3) is provided with a PLC system (301), a hardware circuit ( 302) and an operating system (303), the PLC system (301) is connected to the speed measurement and regulation system (7), and the hardware circuit (302) is connected to the frequency converter (402). 5. A speed regulating control device suitable for a mining infinite rope winch according to claim 1, characterized in that: the PLC control and operation integrated box (3) is externally connected with a leakage communication system (8).

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