Adjustable electric mountain harvester

 

The invention relates to mining and is intended for management of mining machines with adjustable feed drive. The objective of the invention is to enhance reliability of the electric drive mining combine, reducing the number of control cables and electrical power cables power from the gate control stations to combine, reduce the cost of cable products and hardware control station when the resource conservation and high efficiency of pollution control equipment. The device comprises a frequency Converter, the output of which is connected to the motor supply, sensors, DC motors, filing and cutting, the input and output electromagnetic filters, controllers, control stations and harvester modules surge protection or optical communication modules, additional blocks independent overcurrent protection of motors cutting overload and intensity control device. The frequency Converter is made as a single piece, installed in an explosion-proof casing of the control station with camera inputs, located on the secondary roadway. The motor drive supply is connected to the frequency Converter one power electricalthe for control of mining machines with adjustable feed drive, ensure optimization of operation modes, load control and protection of electrical cutting and filing against overloading and overturning.

Known to the control unit of the mining machine, comprising a unit load, the output of which is connected to the first input of the first comparison element, the sensor load motors of the cutting mining machine, connected to a second input of the first element of the comparison, the controller loads, two amplifier, rectifier, the second element of comparison, the adder and the reference signal, the output of which is connected to the first input of the adder, the output of the generator load through a first amplifier connected to the first input of the second comparison element, the output of which is connected in series through the rectifier and the second amplifier is connected with the second input of the adder, the output of the load sensor motor cut mining machines connected to the second input of the second element of comparison, the output of the first comparison element is connected to the controller input load (A. C. the USSR 1476125, CL. E 21 35/24, 1987).

In this solution, protection of motors cutting overload is carried out by regulating the position of the combine harvester in the direction perpendicular to the plane of the stope, so EET management mechanized complex.

Also known electric drive adjustable mountain harvester, including a frequency Converter, the output of which is connected to the motor supply, the current sensors motor feed current sensors motor cutting blocks for extracting the maximum signal, the element of comparison, the controller loads the source reference signal, the threshold element, the adder unit intensity and starters (A. C. the USSR 1795096, CL. E 21 35/24, 1989).

Significant disadvantages of the solutions are insufficient performance, low efficiency in the realignment parameters of the automatic control system, no additional independent overcurrent protection electric cutting overload, lack of protection equipment control and power circuits from surges and electromagnetic interference, which is the reason for the malfunction, lack of reliability and poor performance of the mining machine.

Closest to the proposed to the technical essence and the achieved result is adjustable electric mountain harvester, including frequency converters, the outputs of which are connected to the motor supply, the current sensors motor feeder, Dutch is the first element, the adder, the regulator load intensity control device and starters. Adjustable drive is made from the control station with cameras inputs and energy unit of the harvester with the possibility of separate locations, frequency converters equipped with input and output electromagnetic sinusoidal filters and connected to the corresponding electric motors supply, and blocks the allocation of the maximum signal, the element of comparison, the controller loads the source reference signal, the threshold element and an adder made on the basis of microprocessors, controllers, control stations and combine. Motors cutting connected with magnetic starters through camera inputs control station. Plant controller and the controller harvester equipped with modules surge protection and optical communication modules, and the output controller harvester is connected to the input of the controller control station electrical or fiber optic cable. The control station or the electronic unit of the harvester is provided with an additional block of independent overcurrent protection of motors cutting overload (a utility model Certificate 14741, CL. E 21 35/24, 2000) is adopted for the prototype.

The main disadvantages of the prototype of the two feed to their frequency Converter separate power electric cable, that requires additional space in the cable-handling vessel, increases its rigidity, and hence the loop radius of the bend, the use of additional hardware and software to ensure synchronous operation of frequency converters, connect the motor only through the control station, which requires, in turn, additional measures for electrical safety in connection with the need for supply voltages up to 1140 In to high-voltage devices, additional volume to accommodate the equipment, increasing the dimensions control stations and other

The essence of the invention lies in the fact that in the regulated electric mountain harvester consisting of a frequency Converter, the output of which is connected to the motor supply, sensors, DC motors, filing and cutting, the input and output electromagnetic filters, controllers, control stations and harvester modules surge protection or optical communication modules, additional blocks of independent overcurrent protection of motors cutting overload, the unit of the intensity, frequency Converter is made as a single piece, set in vzryvopodavlenija supply connected to the frequency Converter one power cable, and the load regulation and protection of each motor feeder from overload are provided with current sensors and an onboard controller that is installed in the electronic unit of the harvester.

In addition, blocks of independent overcurrent protection of motors cutting from overloading and overturning and current sensors motor cutting is placed in the chamber of the apparatus control station, and the outputs of the current sensors cutting connected to respective inputs of the control station.

In addition, the motors cutting connected with magnetic starters directly through the camera inputs the electronic unit of the harvester units independent overcurrent overload protection and current sensors cutting is placed in the chamber of the apparatus of the electronic unit of the harvester, and the outputs of the current sensors cutting connected to respective inputs of the controller processor.

A causal relationship between the set of essential features of the proposed solutions and achievable technical result is the following: Symptom - frequency Converter is made as a single piece, installed in an explosion-proof casing of the control station with camera inputs provides a parallel and synchronous operation of the electrode is Oia, the increased reliability of the control station.

Sign - motors feed drive connected to the frequency Converter one power cable allows you to reduce the number of power supply electric cables and the dimensions of the cable-handling vessel, to increase the flexibility and mobility truck chain cable-handling vessel, to reduce the size of the camera inputs the control station, to reduce the cost of cable products, to improve the reliability of operation of excavation equipment.

Sign - load control and protection of each motor feeder from overload is provided by current sensors and an onboard controller that is installed in the electronic unit of the harvester ensures reliable operation of the drive and individual protection of each motor feeder from overload and tilts while simplifying the hardware and design of the control station.

Sign - "blocks independent overcurrent overload protection and motor current sensors motor cutting is placed in the chamber of the apparatus control station, and the outputs of the current sensors cutting connected to respective inputs of the controller control station" allows abbr who has lived cable management.

Sign - motors cutting connected with magnetic starters directly through the camera inputs the electronic unit of the harvester units independent overcurrent overload protection and current sensors cutting is placed in the chamber of the apparatus of the electronic unit of the harvester, and the outputs of the current sensors cutting connected to respective inputs of the controller harvester provides the minimum dimensions of the gate control stations, allows you to manage the harvester for the minimum number of wires of the cable management and improve the reliability of electrical equipment.

The technical result of the proposed solutions is to increase the reliability of the electric drive mining combine, reduce the number of control cables and electrical power cables power from the gate control stations to combine, reduce the cost of cable products and hardware control station when the resource conservation and high efficiency of pollution control equipment.

The drawing shows a structural diagram of an adjustable electric drive mining combine.

Adjustable electric mountain harvester includes a control station 1 camera inputs 2 and the camera apparatus 3 located on the excavation is I 1 and the electronic unit 4 is connected between the power cables 7 and control cables 8. The harvester is provided with electric motors cutting 9 and 10 and the motor feeder 11 and 12. The motor cuts 9 and 10 are connected with the respective electromagnetic actuators 13 and 14 through the blocks independent overcurrent protection 15 and current sensors cutting 16.

The first input of the frequency Converter 17 is connected to the actuator 18 or actuator 13 through the circuit breaker 19, fast-acting fuses 20, contactor 21 and the input electromagnetic filter 22, and the output of the frequency Converter is connected to the motor flows through the output electromagnetic filter 23 and the current sensors 24.

The frequency Converter 17 is connected to the controller 25 of the control station 1. In the camera apparatus 6 of the electronic unit 4 has a controller 26 of the combine. The input of the controller 25 of the control station 1 is connected to the output of the controller 26 of the combine fiber optic or electrical control cable 7, and the first input of the controller harvester is connected to the intensity control device 27. The controller 25 of the control station and 26 of the combine is equipped with security modules of the communication lines from overvoltage 28 or optical communication modules 29. To ensure the explosion proof control station 1 and the electronic unit 4 harvester set the choke-nortropane. Current sensors 24 of the motor feeder 11 and 12 is connected to the second and third inputs of the controller 26 of the combine, and the current sensors 16 motors cutting 9 and 10 are connected respectively with storm and third inputs of the controller 25 of the control station 1.

Maintaining the temperature and humidity inside the chamber apparatus 3 of the control station 1 and the camera apparatus 6 of the electronic unit 4 is provided by the control unit climatic conditions 31 and control leakage power cables power supply and cutting - block isolation control 32. The Executive of the unit with climate control 31 and the block isolation control 32 impinges on the emergency circuit of the power system.

The device of the control station 1 and the electronic unit 4 is provided from the power source 33.

The drive works as follows.

Power to the frequency Converter 17 of the control station 1 serves the inclusion of the magnetic actuator 18 or 13 and the automatic switch 19, and the electronic unit 4 of the harvesting machine incorporating magnetic contactors 13 and 14. Then turns on the contactor 21 and the voltage fed to the input of the frequency Converter 17 through fast-acting fuses 20 and the input electromagnetic filter 22. Studat testing status and health system control and power circuits of the frequency Converter 17, the control station 1 and combine and prepare them to work.

After starting the motor cuts 9 and 10 of the current signals from the current sensors cutting 16 are fed to the analog inputs of the controller 25 of the control station and processed by its microprocessor, which, in turn, prepares a command to turn on the frequency Converter 17.

In the steady state operation of the electric drive mining combine the signals set the feed speed to the intensity control device 27 mounted on the control processor, is fed to the input of the controller 26 of the combine and further, in processed form, is passed through the modules surge protection 28 electrical cable or optical communication module 29 via fiber optic cable to the controller 25 of the control station, generating appropriate control signals set modes of operation of the frequency Converter 17. Method of transmitting control signals is determined by the configuration of the Assembly of the controllers 25 and 26 of the control station and combine.

In case of congestion, while increasing motor currents cutting 9 and 10 or the motor feeder 11 and 12 above the specified maximum value, the controller 25 of the control station and 26 combine process of letely feed and form a team to reduce the feed rate. The corresponding command is to decrease the output frequency of the frequency Converter 17 is issued by the controller 25 of the control station 1. There is a reduction of rotation speed and load of the motor feeder 11 and 12 and, accordingly, the feeding speed of the harvester, which reduces the load on the Executive bodies of the combine and, accordingly, the motors cutting and reduction of current cutting to a predetermined value current setpoint.

With a further reduction of the load and, accordingly, the current cutting controllers 25 control stations and 26 combine issue a command to increase the feeding speed of the harvester. The controller 25 of the control station fulfills the command to increase the output frequency of the frequency Converter 17, a proportional increase of the rotational speed of the motor feeder 11 and 12 and the feed speed of the harvester, to set the intensity control device 27.

With the protracted start motor feeder 11 and 12, the signals from current sensors 24 motors filing processed by the controller 26 of the combine, which generates the command to switch and generates electrical or fiber optic cable at controlstate 17 is produced by setting the intensity control device 27 to the zero position. At the same time from the controller 26 of the harvester for electrical or fiber optic cable, the controller 25 of the control station receives the signal to stop the combine. Next, the signal to stop is processed and supplied to the controller of the frequency Converter, which stops the motor feeder 11 and 12 with a predetermined intensity of braking. Disable contactor 21 is not happening.

With the protracted start motors cutting 9 and 10, the signals from blocks of independent overcurrent protection 15 arrive at tripping device magnetic contactors 13 and 14 which switch off the supply voltage of the processor.

When disconnecting the motor cuts 9 and 10 to the inputs of the controller 25 of the control station cannot receive the signals from the current sensors of cut 16 and the controller of the frequency Converter receives a request to shut off. After stopping the motor drive supply 11 and 12 switches off the contactor 21.

Explosion of adjustable speed drive is provided intrinsically safe clearances enclosures control station 1 and the electronic unit 4 and using choke-shorts 30, the actuating elements which affect emergency electrical circuit C the aqueous harvester, including a frequency Converter, the output of which is connected to the motor supply, sensors, DC motors, filing and cutting, the input and output electromagnetic filters, controllers, control stations and harvester modules surge protection or optical communication modules, additional blocks independent overcurrent protection of motors cutting overload and intensity control device, characterized in that the frequency Converter is made as a single piece, installed in an explosion-proof casing of the control station with camera inputs, located on the secondary roadway, the motor drive supply connected to the frequency Converter one power cable, and the load regulation and protection of each motor feeder from overload is provided by current sensors and an onboard controller that is installed in the electronic unit of the harvester.

2. Adjustable electric mountain harvester under item 1, characterized in that the blocks are independent overcurrent protection of motors cutting from overloading and overturning and current sensors motor cutting is placed in the chamber of the apparatus control station, and the outputs of the current sensors is the mountain water harvester according to p. 1, characterized in that the motor cuts connected with magnetic starters directly through the camera inputs the electronic unit of the harvester units independent overcurrent overload protection and current sensors cutting is placed in the chamber of the apparatus of the electronic unit of the harvester, and the outputs of the current sensors cutting connected to respective inputs of the controller processor.

 

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