CN113501421A - Driving control system of mining monorail crane - Google Patents
Driving control system of mining monorail crane Download PDFInfo
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- CN113501421A CN113501421A CN202110871697.XA CN202110871697A CN113501421A CN 113501421 A CN113501421 A CN 113501421A CN 202110871697 A CN202110871697 A CN 202110871697A CN 113501421 A CN113501421 A CN 113501421A
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- power supply
- module
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- explosion
- driving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/16—Rope, cable, or chain drives for trolleys; Combinations of such drives with hoisting gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/02—Trolleys or crabs, e.g. operating above runways with operating gear or operator's cabin suspended, or laterally offset, from runway or track
- B66C11/04—Underhung trolleys
- B66C11/06—Underhung trolleys running on monorails
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a driving control system of a mining monorail crane locomotive, which comprises an operating handle, an explosion-proof battery box, a control box, a display screen, more than 2 driving units for driving the monorail crane locomotive to operate and a power supply on-off controller for respectively controlling the on-off of the power supply of each driving unit; each driving unit comprises 2 frequency conversion integrated machines for providing power output, 2 large-speed-ratio planetary speed reducers for reducing speed and increasing torque, 2 friction driving wheels for driving, 2 sets of walking wheels for bearing and 2 pairs of braking devices for braking; the power ends of the 2 frequency conversion all-in-one machines of each driving unit are connected in parallel and are electrically connected with the same power output end of the power on-off controller, and the communication ends of the 2 frequency conversion all-in-one machines are respectively communicated with the control box. The invention adopts a 1-to-1 control mode, and can effectively solve the technical problems that the existing 1-to-many similar system has low operation efficiency and high failure rate, and other motors are easy to cause overload secondary damage when a single motor fails, and the like.
Description
Technical Field
The invention relates to the technical field of mining monorail cranes, in particular to a driving control system of a mining monorail crane.
Background
The mining monorail crane is one of important auxiliary transportation tools in coal mines. The existing monorail crane vehicles adopted in coal mines are divided into 2 types according to different driving powers, one type adopts a diesel engine as power, and the other type adopts a storage battery as power, wherein the diesel engine monorail crane vehicle is gradually replaced by an electrically driven monorail crane vehicle due to the defects of high oil consumption, high noise, heavy pollution, low efficiency and the like. The existing driving control system of the mining monorail crane locomotive taking the storage battery as power is shown in fig. 1 and mainly comprises an operating handle, an explosion-proof battery box, a control box, a display screen, an explosion-proof frequency converter and n driving units, wherein the storage battery is arranged in the explosion-proof battery box and is used for providing a power supply, the operating handle is used for controlling and providing an operating signal for the control box, the control box is used for master control of the system, the display screen is used for information display, the explosion-proof frequency converter is used for driving and controlling the n driving units, each driving unit comprises 1 motor (M1-Mn) used for driving, a large-speed-ratio planetary reducer in transmission connection with the motors and used for reducing speed and increasing torque, a friction driving wheel in transmission connection with the large-speed-ratio planetary reducer and used for driving the monorail crane locomotive to walk, and a braking device used for braking. The existing driving control system of the electric mining monorail crane has the following problems: firstly, 1 explosion-proof frequency converter is adopted to drive and control N motors M1-Mn, namely 1-motor-driven driving control mode, when the system works, the explosion-proof frequency converter can only detect the sum of the running torque and the current of each motor and can not detect the current, the torque and other parameters of a single motor, the explosion-proof frequency converter adopts a fuzzy control means for each motor and can not accurately control each motor, and the problem is that when the single motor is overloaded in the running process, the motor is easily burnt, and the failure rate is relatively high; meanwhile, in the operation process, because the working conditions of the motors are different, the output torques of the motors cannot be balanced, if the motors are damaged, the motors need to be stopped and matched with motor parameters of the explosion-proof frequency converter again, otherwise, if the motors continue to operate, the motors are extremely easy to overload and secondarily damage other motors due to overlarge motor parameters, and the underground transportation and production of a coal mine are very unfavorable. Secondly, the single explosion-proof frequency converter has low fault-tolerant rate, and if the explosion-proof frequency converter is damaged, the monorail crane cannot run. Thirdly, the existing 1-to-many explosion-proof frequency converter box body is large in size and heavy in weight, so that the installation space and reasonable vehicle balance weight are not saved on the monorail crane with the relatively long and narrow vehicle body, and the running performance of the monorail crane is influenced.
Disclosure of Invention
The purpose of the invention is: the improved driving control system for the mining monorail crane car solves the technical problems of the electric driving control system for the mining monorail crane car in the prior art.
The technical scheme of the invention is as follows: the invention discloses a driving control system of a mining monorail crane, which comprises an operating handle for providing an operating signal, an explosion-proof battery box for providing a power supply, a control box for system master control and a display screen for information interaction, wherein the operating handle and the display screen are electrically connected with the control box, and the driving control system is structurally characterized in that: the monorail crane further comprises more than 2 driving units for driving the monorail crane to operate and a power supply on-off controller for respectively controlling the on-off of the power supply of each driving unit; the power supply on-off controller is provided with a power supply input end, power supply output ends and control ends, the number of the power supply output ends is not less than that of the driving units, the power supply input end of the power supply on-off controller is electrically connected with the explosion-proof battery box, and each control end of the power supply on-off controller is electrically connected with the electric cabinet; the power end of each driving unit is electrically connected with the same power output end of the power on-off controller, and the communication end of each driving unit is communicated with the control box respectively.
The further scheme is as follows: the driving unit comprises 2 frequency conversion integrated machines for providing power output, 2 large-speed-ratio planetary speed reducers in transmission connection with 1 frequency conversion integrated machine, 2 friction driving wheels in transmission connection with 1 large-speed-ratio planetary speed reducer, 2 sets of travelling wheels for bearing and following the friction driving wheels and 2 pairs of braking devices for braking; the power ends arranged on the 2 frequency conversion all-in-one machines are connected in parallel to form the power end of the driving unit, and the communication ends arranged on the 2 frequency conversion all-in-one machines jointly form the communication end of the driving unit.
The further scheme is as follows: the frequency conversion all-in-one machine is integrally composed of a motor for providing driving power and an explosion-proof frequency converter for carrying out frequency conversion control on the motor.
The further scheme is as follows: the explosion-proof frequency converter comprises a box body, a front cover, a cable joint, a control line joint, a through-wall wiring terminal, a through-wall wiring seat, a radiator, a controller and an IGBT driving module; the front end of the box body is opened, the rear end wall body is provided with a wiring hole, and the box body is internally provided with a middle clapboard which divides the space in the box body into a main cavity positioned below and a wiring cavity positioned above; the front cover is fixedly connected with the box body to seal the front end opening of the box body; the two sides of the upper part of the box body are respectively provided with 2 cable connectors and control wire connectors which are respectively communicated with the wiring cavity; the wall-through wiring terminal is fixedly provided with two through-wall wiring terminals on the middle partition plate, and the upper end and the lower end of each through-wall wiring terminal respectively extend out of the wiring cavity and the main cavity of the box body; the wall-through wire seat is fixedly arranged on the middle partition plate; the radiator is fixedly arranged below the box body, the controller and the IGBT driving module are fixedly arranged in the main cavity of the box body, and the IGBT driving module is attached to the radiator; the IGBT driving module is electrically connected with the controller, the power supply ends of the IGBT driving module and the controller jointly form the power supply end of the frequency conversion all-in-one machine, and the power supply end of the frequency conversion all-in-one machine is electrically connected with the power supply on-off controller through a wall-penetrating wiring terminal, a cable and a cable joint; the communication end arranged on the controller forms the communication end of the frequency conversion all-in-one machine, and the communication end of the frequency conversion all-in-one machine is in communication connection with the control box through the wall-penetrating wire seat and the control wire joint by a communication cable; the motor is electrically connected with an IGBT driving module of the explosion-proof frequency converter.
The further scheme is as follows: the motor comprises a shell, an end cover, a rotating shaft, a stator, a rotor and 2 bearings; the shell is provided with a wire passing hole and a heat dissipation rib; the motor is fixedly connected with a box body of the explosion-proof frequency converter into a whole by a shell body, a wire passing hole in the shell body of the motor is communicated with a wire passing hole in the box body of the explosion-proof frequency converter, and a power supply end of the motor penetrates through the wire passing hole in the motor shell body and the wire passing hole in the box body of the explosion-proof frequency converter through a cable and then is electrically connected with an IGBT driving module of the explosion-proof frequency converter.
The further scheme is as follows: the controller of the explosion-proof frequency converter comprises a power supply conversion module, a CPU module, a voltage acquisition module, a current acquisition module and a temperature acquisition module, wherein:
the voltage acquisition module is used for acquiring the input voltage of the IGBT driving module and sending a signal to the CPU module;
the current acquisition module is used for acquiring the working current of the motor and sending a signal to the CPU module;
the temperature acquisition module is used for acquiring the temperature of the IGBT driving module and sending a signal to the CPU module;
the CPU module is used for monitoring the running state of the motor, uploading monitoring information to the control box, receiving a synchronous control signal sent by the control box, and correspondingly controlling the IGBT driving module so as to correspondingly control the power supply on-off and frequency conversion running of the motor; the CPU module is respectively and electrically connected with the voltage acquisition module, the current acquisition module, the temperature acquisition module and the IGBT driving module, and a communication end of the CPU module is a communication end of the controller, namely a communication end of the frequency conversion all-in-one machine;
and the power supply conversion module is used for converting the DC320V power supply output by the explosion-proof battery box into a DC24 power supply to supply power to the CPU module.
The further scheme is as follows: the controller of the explosion-proof frequency converter further comprises a filtering module for filtering the input power supply of the explosion-proof frequency converter 11, and a discharging module for discharging residual voltage on a circuit after the input power supply of the explosion-proof frequency converter is cut off so as to ensure that no residual voltage exists on a bus within 15 minutes.
The further scheme is as follows: the IGBT driving module is used for converting an input DC320V direct-current power supply into a three-phase alternating current in an inverse mode, and under the control of the CPU module, the motor can run in a frequency range of 42-160 Hz when the monorail crane vehicle is in a light load state, and run in a frequency range below 42Hz when the monorail crane vehicle is in a heavy load state.
The further scheme is as follows: the power supply on-off controller is composed of contactors with the number not less than that of the driving units, power input ends of the contactors jointly form a power input end of the power supply on-off controller, power output ends of the contactors form a power output end of the power supply on-off controller, and control ends of the contactors form a control end of the power supply on-off controller.
The invention has the positive effects that: (1) the drive control system of the mining monorail crane has structural designs of 1-to-1 control on the power on-off of each drive unit comprising 2 frequency conversion all-in-one machines through the specially innovatively designed frequency conversion all-in-one machines, the interaction mode of each frequency conversion all-in-one machine and a control box and the special arrangement of a power on-off controller, the transportation efficiency and the operation stability of the mining monorail crane can be obviously improved, the failure rate is obviously reduced, and when a certain driving unit fails, the system can get rid of the failed driving unit to ensure that the mining monorail crane can still safely and effectively operate under the condition of capacity reduction, therefore, the technical problems that in the prior art, 1 explosion-proof frequency converter is adopted to drive and control n motors, namely 1 is adopted to drive and control a plurality of fuzzy control drive control modes, so that the running efficiency is low, the failure rate is high, and other motors are easy to cause overload secondary damage when a single motor fails can be effectively solved. (2) According to the drive control system for the mining monorail crane vehicle, the motor in the frequency conversion all-in-one machine is controlled by the matched anti-explosion frequency converter, and the anti-explosion frequency converter or the motor in the single frequency conversion all-in-one machine is damaged, so that the operation of the mining monorail crane vehicle is not influenced, and the technical problem that the monorail crane vehicle cannot operate if the anti-explosion frequency converter is damaged in the mode that the single anti-explosion frequency converter 1 is adopted to drive multiple motors in the prior art is effectively solved. (-3) the drive control system of the mining monorail crane vehicle of the invention, its frequency conversion unitary device is the component of every drive unit, assemble together with planetary reducer, friction drive wheel and walking wheel of the large velocity ratio, thus can omit the anti-explosion frequency converter box body that the volume is big, the weight is heavy in the prior art, help to save installation space and vehicle rational counter weight on the narrow and long body of monorail crane vehicle, improve the monorail crane vehicle operation performance.
Drawings
FIG. 1 is a block diagram showing the structure of a drive control system of a mining monorail crane vehicle in the prior art;
FIG. 2 is a block diagram schematically illustrating the structure of a drive control system of a mining monorail crane vehicle of the present invention;
fig. 3 is a schematic perspective view of the driving unit in fig. 2.
FIG. 4 is a schematic structural diagram of the frequency conversion integrated machine in FIG. 2;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a top view of FIG. 4;
FIG. 7 is a sectional view taken along line A-A of FIG. 5;
FIG. 8 is a schematic perspective view of the frequency conversion integrated machine of FIG. 3 with a front cover of a frequency converter removed;
FIG. 9 is a schematic block diagram of a circuit structure of the frequency conversion all-in-one machine of the invention.
The reference numbers in the above figures are as follows:
the device comprises a frequency conversion all-in-one machine 1, an explosion-proof frequency converter 11, a box body 11-1, a middle partition plate 11-1-1, a main cavity 11-1-2, a wiring cavity 11-1-3, a front cover 11-2, a cable joint 11-3, a control line joint 11-4, a wall-through wiring terminal 11-5, a wall-through wiring seat 11-6, a controller 11-7, an IGBT driving module 11-8 and a radiator 11-9; the motor comprises a motor 12, a shell 12-1, a wire passing hole 12-1-1, a heat dissipation rib 12-1-2, an end cover 12-2, a rotating shaft 12-3, a bearing 12-4, a stator 12-5 and a rotor 12-6;
a large speed ratio planetary reducer 2; a friction drive wheel 3; a traveling wheel 4; and a braking device 5.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
(example 1)
Referring to fig. 2 and 3, the drive control system of the mining monorail crane vehicle of the embodiment mainly comprises an operating handle, an explosion-proof battery box, a control box, a display screen, a power supply on-off controller and more than 2 drive units. Each driving unit comprises 2 frequency conversion integrated machines 1, 2 large-speed-ratio planetary speed reducers 2 and 2 friction driving wheels 3; 2 sets of travelling wheels 4 and 2 sets of auxiliary braking devices 5.
The operating handle is used for controlling the monorail crane vehicle and providing an operating signal for the control box, when the monorail crane vehicle is used, the operating handle sends start-stop, direction, reset and 0-10V analog quantity control signals to the control box, and the structure, the action and the working principle of the operating handle are the same as those of the prior art and are not detailed.
The explosion-proof battery box is internally provided with a storage battery and provides a main power supply for a driving control system of the mining monorail crane, and the explosion-proof battery box is the same as the prior art and is not described in detail.
The display screen is used for displaying information such as system parameters, running states and faults, the display screen is used for displaying system information, the function of the display screen is the same as that of the display screen in the prior art, and the display screen is different from that of the display screen in the prior art.
The control box is used for the master control of the drive control system, and is different from the multi-dragging control mode of the prior art 1, the control box in the system realizes 1-dragging-1 distributed control on each frequency conversion all-in-one machine 1 in each drive unit, and the control box is in CAN communication connection with each frequency conversion all-in-one machine 1 and each frequency conversion all-in-one machine 1. The operating handle and the display screen are electrically connected with the control box.
And the power supply on-off controller is used for correspondingly controlling the on-off of the power supply of each driving unit under the control of the control box. The power on-off controller is based on the contactor of being no less than drive unit quantity and constitutes, and the power input of each contactor all is connected with explosion-proof battery box electricity, and the power output of each contactor respectively is connected with 1 drive unit's power input electricity, and the control end of each contactor all is connected with the control box electricity. When the mining monorail crane works, if a certain driving unit breaks down, the control box controls the contactor electrically connected with the driving unit with the fault to be disconnected, so that the power supply of the driving unit with the fault is cut off, and the mining monorail crane can still keep normal operation under the condition of capacity reduction.
Referring to fig. 4 to 8, the frequency conversion all-in-one machine 1 is mainly composed of an explosion-proof frequency converter 11 and a motor 12 in an integrated manner.
The explosion-proof frequency converter 11 mainly comprises a box body 11-1, a front cover 11-2, a cable joint 11-3, a control line joint 11-4, a wall-through wiring terminal 11-5, a wall-through wire seat 11-6, a controller 11-7, an IGBT driving module 11-8 and a radiator 11-9.
Referring to fig. 8 and 4, the front end of the box body 11-1 is open, the rear end wall body is provided with wiring holes, a middle partition plate 11-1-1 is arranged in the box body 11-1, the middle partition plate 11-1-1 divides the space in the box body 11-1 into a main cavity 11-1-2 positioned below and a wiring cavity 11-1-3 positioned above, and the front cover 11-2 is fixedly connected with the box body 11-1 to seal the front end opening of the box body 11-1. Two sides of the upper part of the box body 11-1 of the cable joint 11-3 and the control line joint 11-4 are respectively provided with 2 and are respectively communicated with the wiring cavity 11-1-3. Two through-wall wiring terminals 11-5 are fixedly arranged on the middle partition plate 11-1-1, and the upper end and the lower end of each through-wall wiring terminal 11-5 respectively extend out of a wiring cavity 11-1-3 and a main cavity 11-1-2 of the box body 11-1; the wall-through wire seat 11-6 is fixedly arranged on the middle partition plate 11-1-1. The controller 11-7 and the IGBT driving module 11-8 are fixedly arranged in a main cavity 11-1-2 of the box body 11-1, the radiator 11-9 is fixedly arranged below the box body 11-1, and the IGBT driving module 11-8 is attached to the radiator 11-9 so as to facilitate heat dissipation during working.
The motor 12 mainly comprises a shell 12-1, an end cover 12-2, a rotating shaft 12-3, 2 bearings 12-4, a stator 12-5 and a rotor 12-6; the motor 12 is a three-phase ac motor, and its structure is basically the same as that of the prior art and will not be described in detail. The shell 12-1 is provided with a wire through hole 12-1-1 and a heat dissipation rib 12-1-2. The motor 12 is fixedly connected with the case 11-1 of the explosion-proof frequency converter 11 into a whole by the case 12-1 thereof, and the wire through hole 12-1-1 on the case 12-1 of the motor 12 is communicated with the wire through hole on the case 11-1 of the explosion-proof frequency converter 11 for power line wiring of the motor 12.
Referring to fig. 9, a controller 11-7 of the explosion-proof frequency converter 11 is mainly composed of a power conversion module, a CPU module, a voltage acquisition module, a current acquisition module, a temperature acquisition module, a filtering module, and a discharging module.
And the power supply conversion module is used for converting a DC320V power supply output by the explosion-proof battery box into a DC24 power supply to supply power to the CPU module, the input end of the power supply conversion module is electrically connected with the wall-through wiring terminal 11-5, and the wall-through wiring terminal 11-5 is electrically connected with the power supply on-off controller through a cable joint 11-3. The power conversion module itself is a mature prior art, and its circuit structure is not described in detail.
The CPU module is respectively electrically connected with the voltage acquisition module, the current acquisition module, the temperature acquisition module, the IGBT drive module 11-8 and the control box, the CPU module is in communication connection with the control box through a communication cable via a wall-through wire seat 11-6 and a control wire connector 11-4, the CPU module is used for monitoring the running state of the motor 12 and uploading monitoring information to the control box, and synchronous control signals sent by the control box are received to correspondingly control the IGBT drive module 11-8 so as to correspondingly control the power on-off and frequency conversion operation of the motor 12.
The voltage acquisition module is used for acquiring the input voltage of the IGBT driving module 11-8 and sending a signal to the CPU module; the current acquisition module is used for acquiring the output current of the IGBT driving module 11-8, namely the working current of the piezoelectric motor 12, and sending a signal to the CPU module; and the temperature acquisition module is used for acquiring the temperature of the IGBT driving module 11-8 and sending the signal to the CPU module.
The filtering module and the discharging module are arranged in an optimal mode, and both the filtering module and the discharging module are electrically connected with the power input end of the explosion-proof frequency converter 11; the filtering module is composed of a capacitor and is used for filtering the input power supply of the explosion-proof frequency converter 11; the discharging module is composed of a resistor and is used for discharging residual voltage on a line after an input power supply of the explosion-proof frequency converter 11 is cut off, and ensuring that no residual voltage exists on a bus within 15 minutes so as to ensure the safety of uncovering of the explosion-proof frequency converter 11.
The input end of the IGBT driving module 11-8 is electrically connected with a through-wall wiring terminal 11-5, the output end of the IGBT driving module 11-8 passes through a wiring hole on a box body 11-1 of the explosion-proof frequency converter 11 and a wiring hole 12-1-1 on a shell 12-1 of the motor 12 by a cable to be electrically connected with the power supply end of the motor 12, and the control end of the IGBT driving module 11-8 is electrically connected with a CPU module of the controller 11-7. The IGBT driving module 11-8 is used for inverting an input DC320V power supply into three-phase alternating current, and under the control of the CPU module, the motor 12 can run at constant power below a rated frequency (0-42 Hz), at constant power of 42-130 Hz and at reduced power of 130-167 Hz, so that the running efficiency of the anti-explosion monorail crane is maximized.
Referring to fig. 3, the power input ends of 2 frequency conversion integrated machines 1 in each driving unit are connected in parallel and then electrically connected with the power output end of the same contactor of the power on-off controller, a rotating shaft 12-3 of a motor 12 of each frequency conversion integrated machine 1 is in transmission connection with 1 friction driving wheel 3 through 1 large-speed-ratio planetary reducer 2, and 2 sets of traveling wheels 4 are respectively fixedly connected with 2 large-speed-ratio planetary reducers 2 at two sides of the 2 friction driving wheels 3 and are respectively provided with 1 set; 2 sets of auxiliary braking devices 5 are respectively and fixedly arranged on the 2 sets of travelling wheels 4 by 1 set. When the device is used, the 2 friction driving wheels 3 are arranged on two sides of a hanger rail track for the operation of the mining monorail crane, and the mining monorail crane is driven to operate by the rotation of the friction driving wheels 3; 2 sets of walking wheels 4 are hung on the hanger rail track, and 2 sets of walking wheels 4 are connected with the monorail crane. The auxiliary braking device 5 is used as a protection device in the accidental situations of slipping of the friction driving wheel 3 in the driving unit, overspeed runaway and the like; the large-speed-ratio planetary reducer 2 is used for reducing the speed and increasing the torque of the motor 12 to realize the rated traction output of the friction driving wheel 3.
The working principle and the process of the driving control system of the mining monorail crane trolley of the embodiment are briefly described as follows:
when the mining monorail crane vehicle provided with the driving control system of the mining monorail crane vehicle of the embodiment is used, control signals of starting, stopping, direction, resetting and the like of the monorail crane are input to the control box through the operating handle, the controller sends the control signals to each frequency conversion all-in-one machine 1 through synchronous communication, the explosion-proof frequency converter 11 of each frequency conversion all-in-one machine 1 synchronously receives the control signals to drive the motor 12 of the frequency conversion all-in-one machine 1 to run, thereby leading each frequency conversion integrated machine 1 to synchronously drive the mining monorail crane to run, leading the torque output among the frequency conversion integrated machines 1 to be consistent, if two frequency conversion integrated machines 1 of a certain driving unit ascend slopes to cause torque increasing requirements, the torques of the online frequency conversion integrated machines 1 of other driving units are increased synchronously, and the purposes that a plurality of frequency conversion integrated machines 1 can operate independently and keep the torques synchronous are achieved; during use, the frequency conversion all-in-one machine 1 can operate at a frequency section of 42-160 Hz under light load and below 42Hz under heavy load according to different load working conditions of the mining monorail crane, so that the operation efficiency of the mining monorail crane is maximized, and the speed of the whole monorail crane can be adjusted through the rotation speed adjustment of the frequency conversion all-in-one machine 1. In the operation process, the parameters, the operation state, the faults and other information of each frequency conversion all-in-one machine 1 are uploaded to the control box in real time and are sent to the display screen by the control box to be displayed; in the operation process, the control box monitors parameters such as current and torque of the motor 12 of each frequency conversion all-in-one machine 1 in real time, if the motor 12 of one frequency conversion all-in-one machine 1 fails, the control box disconnects the power supplies of the 2 frequency conversion all-in-one machines 1 of the driving unit by disconnecting the contactor of the driving unit where the frequency conversion all-in-one machine 1 which fails is located in the power supply on-off controller, and the mining monorail crane can still keep normal operation under the condition of capacity reduction.
The above embodiments are illustrative of specific embodiments of the present invention, and are not restrictive of the present invention, and those skilled in the relevant art can make various changes and modifications without departing from the spirit and scope of the present invention to obtain corresponding equivalent technical solutions, and therefore all equivalent technical solutions should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a mining single track loop wheel machine car drive control system, is including the operating handle who is used for providing operating signal for the explosion-proof battery box who provides the power, the control box that is used for the system master control for the interactive display screen of information, operating handle and display screen all are connected its characterized in that with the control box electricity: the monorail crane further comprises more than 2 driving units for driving the monorail crane to operate and a power supply on-off controller for respectively controlling the on-off of the power supply of each driving unit; the power supply on-off controller is provided with a power supply input end, power supply output ends and control ends, the number of the power supply output ends is not less than that of the driving units, the power supply input end of the power supply on-off controller is electrically connected with the explosion-proof battery box, and each control end of the power supply on-off controller is electrically connected with the electric cabinet; the power supply end of each driving unit is electrically connected with the same power supply output end of the power supply on-off controller, and the communication end of each driving unit is communicated with the control box.
2. The mining monorail crane drive control system of claim 1, characterized in that: the driving unit comprises 2 frequency conversion integrated machines for providing power output, 2 large-speed-ratio planetary speed reducers in transmission connection with 1 frequency conversion integrated machine, 2 friction driving wheels in transmission connection with 1 large-speed-ratio planetary speed reducer, 2 sets of travelling wheels for bearing and following the friction driving wheels and 2 pairs of braking devices for braking; the power ends arranged on the 2 frequency conversion all-in-one machines are connected in parallel to form the power end of the driving unit, and the communication ends arranged on the 2 frequency conversion all-in-one machines jointly form the communication end of the driving unit.
3. The mining monorail crane drive control system of claim 2, characterized in that: the frequency conversion all-in-one machine is integrally composed of a motor for providing driving power and an explosion-proof frequency converter for implementing frequency conversion control on the motor.
4. The mining monorail crane drive control system of claim 3, characterized in that: the explosion-proof frequency converter comprises a box body, a front cover, a cable joint, a control line joint, a through-wall wiring terminal, a through-wall wire seat, a radiator, a controller and an IGBT driving module; the front end of the box body is opened, the rear end wall body is provided with a wiring hole, and a middle partition plate which divides the space in the box body into a main cavity positioned below and a wiring cavity positioned above is arranged in the box body; the front cover is fixedly connected with the box body to seal the front end opening of the box body; the two sides of the upper part of the box body are respectively provided with 2 cable connectors and control wire connectors which are respectively communicated with the wiring cavity; the wall-through wiring terminal is fixedly provided with two through-wall wiring terminals on the middle partition plate, and the upper end and the lower end of each through-wall wiring terminal respectively extend out of the wiring cavity and the main cavity of the box body; the wall-through wire seat is fixedly arranged on the middle partition plate; the radiator is fixedly arranged below the box body, the controller and the IGBT driving module are fixedly arranged in the main cavity of the box body, and the IGBT driving module is attached to the radiator; the IGBT driving module is electrically connected with the controller, the power supply ends of the IGBT driving module and the controller jointly form the power supply end of the frequency conversion all-in-one machine, and the power supply end of the frequency conversion all-in-one machine is electrically connected with the power supply on-off controller through a wall-penetrating wiring terminal, a cable and a cable joint; the communication end arranged on the controller forms the communication end of the frequency conversion all-in-one machine, and the communication end of the frequency conversion all-in-one machine is in communication connection with the control box through the wall-penetrating wire seat and the control wire joint by a communication cable; the motor is electrically connected with an IGBT driving module of the explosion-proof frequency converter.
5. The mining monorail crane drive control system of claim 4, wherein: the motor comprises a shell, an end cover, a rotating shaft, a stator, a rotor and 2 bearings; the shell is provided with a wire passing hole and a heat dissipation rib; the motor is fixedly connected with a box body of the explosion-proof frequency converter into a whole by a shell body, a wire passing hole in the shell body of the motor is communicated with a wire passing hole in the box body of the explosion-proof frequency converter, and a power supply end of the motor penetrates through the wire passing hole in the motor shell body and the wire passing hole in the box body of the explosion-proof frequency converter through a cable and then is electrically connected with an IGBT driving module of the explosion-proof frequency converter.
6. The mining monorail crane drive control system of claim 4, wherein: the controller of the explosion-proof frequency converter comprises a power supply conversion module, a CPU module, a voltage acquisition module, a current acquisition module and a temperature acquisition module, wherein:
the voltage acquisition module is used for acquiring the input voltage of the IGBT driving module and sending a signal to the CPU module;
the current acquisition module is used for acquiring the working current of the motor and sending a signal to the CPU module;
the temperature acquisition module is used for acquiring the temperature of the IGBT driving module and sending a signal to the CPU module;
the CPU module is used for monitoring the running state of the motor, uploading monitoring information to the control box, receiving a synchronous control signal sent by the control box, and correspondingly controlling the IGBT driving module so as to correspondingly control the power supply on-off and frequency conversion running of the motor; the CPU module is respectively and electrically connected with the voltage acquisition module, the current acquisition module, the temperature acquisition module and the IGBT driving module, and a communication end of the CPU module is a communication end of the controller, namely a communication end of the frequency conversion all-in-one machine;
and the power supply conversion module is used for converting the DC320V power supply output by the explosion-proof battery box into a DC24 power supply to supply power to the CPU module.
7. The mining monorail crane drive control system of claim 6, wherein: the controller of the explosion-proof frequency converter further comprises a filtering module for filtering the input power supply of the explosion-proof frequency converter 11 and a discharging module for discharging residual voltage on a circuit after the input power supply of the explosion-proof frequency converter is cut off so as to ensure that no residual voltage exists on a bus within 15 minutes.
8. The mining monorail crane drive control system of claim 6, wherein: the IGBT driving module is used for converting an input DC320V direct-current power supply into a three-phase alternating current in an inverse mode, and under the control of the CPU module, the motor can operate in a frequency range of 42-160 Hz when the monorail crane vehicle is under light load, and operate in a frequency range below 42Hz when the monorail crane vehicle is under heavy load.
9. The drive control system of the mining monorail crane vehicle as defined in any one of claims 1-8, wherein: the power supply on-off controller is composed of contactors with the number not less than that of the driving units, power input ends of the contactors jointly form a power input end of the power supply on-off controller, power output ends of the contactors form a power output end of the power supply on-off controller, and control ends of the contactors form a control end of the power supply on-off controller.
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| CN202110871697.XA CN113501421A (en) | 2021-07-30 | 2021-07-30 | Driving control system of mining monorail crane |
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| CN202110871697.XA CN113501421A (en) | 2021-07-30 | 2021-07-30 | Driving control system of mining monorail crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115849182A (en) * | 2023-03-02 | 2023-03-28 | 山东拓新电气有限公司 | Monorail crane and power adjusting method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115849182A (en) * | 2023-03-02 | 2023-03-28 | 山东拓新电气有限公司 | Monorail crane and power adjusting method thereof |
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