CN201248024Y

CN201248024Y - DC drive system for mining side dismounting rock machine or mining digging drill vehicle running

Info

Publication number: CN201248024Y
Application number: CNU2008201056998U
Authority: CN
Inventors: 李树辉; 渠永伟; 李祥均; 王佩然; 杜立云
Original assignee: SHIJIAZHUANG COAL MINE MACHINERY CO Ltd
Current assignee: SHIJIAZHUANG COAL MINE MACHINERY CO Ltd
Priority date: 2008-09-01
Filing date: 2008-09-01
Publication date: 2009-05-27
Anticipated expiration: 2018-09-01

Abstract

The utility model relates to a walking DC drive system of a mine side-dumping rock loader or a mine jumbo, an AC/AC converting circuit of the walking DC drive system is connected with an AC/DC converting circuit which is connected with a motor drive circuit, the motor drive circuit is connected with a motor control circuit which is connected with an operating grip, and the motor drive circuit is connected with a series excitation DC motor. A universal grip is used for causing a changeable resistance signal to be used as a speed datum signal of the motor control circuit; the motor control circuit receives the speed datum signal of the universal grip for adjusting the voltage applied to two ends of a motor armature so as to realize the speed governing and the flexible turning of the motor, limit the biggest current of the motor and prevent the motor from being burnt. The series excitation DC motor can realize the walking stepless speed governing of the mine side-dumping rock loader and the mine jumbo and the characteristics of a rooster with low speed and large torque.

Description

Mining side unloading rock loader or mining driving drill carriage walking dc drive system

Technical field

The utility model relates to a kind of dc drive system that drives the travel wheel motion, especially a kind of dc drive system that drives mining side unloading rock loader or the walking of mining driving drill carriage.

Technical background

Mining side unloading rock loader and mining driving drill carriage are the common equipments that excavate in the tunnel, its running part be about two crawler belts, its work characteristics is frequent forward-reverse, turns to.Its walking at present has hydraulic pressure, alternating current machine to drive dual mode.Hydraulically powered shortcoming is the hydraulic oil heating, and efficient is low, and along with the prolongation efficient of service time is more and more lower; The shortcoming that alternating current machine drives is not have speed governing, and it is dangerous soon start to walk, and the frequent start-stop of motor causes that the motor feels hot, more than two kinds of walking manners all influence operating efficiency because of generating heat.

Summary of the invention

Be to solve the deficiencies in the prior art, but the purpose of this utility model provides the electrical speed regulation system that a kind of stepless speed regulation, flexible operation reliably make things convenient for, satisfy the operating characteristic of equipment low-speed big.

For achieving the above object, the direct current machine that drives the dc drive system of mining side unloading rock loader or mining driving drill carriage walking drives under walking, universal lever operated mining side unloading rock loader and the support of mining driving drill carriage based on relative program, comprising:

AC/AC translation circuit (1), AC/DC translation circuit (2), motor-drive circuit (3), operating grip (4), circuit for controlling motor (5) and series DC machine (6).AC/AC translation circuit (1) is connected with AC/DC translation circuit (2), AC/DC translation circuit (2) is connected with motor-drive circuit (3), motor-drive circuit (3) circuit for controlling motor (5) connects, operating grip (4) is connected with circuit for controlling motor (5), and motor-drive circuit (3) is connected with series DC machine.

The AC/AC translation circuit is made up of rectifier transformer, and its former limit Y connects, secondary △ connects, and is used for High Level AC Voltage is become low-voltage AC.

The AC/DC translation circuit is made up of rectifier diode module D1, D2, D3, D4, D5, D6, C1, is used for the alternating current that the step-down of AC/AC translation circuit obtains is carried out rectification, filtering.

Series DC machine (6) adopts the flame-proof mine DC traction motor.

Universal handle is used for the resistance signal that will the change velocity setting as circuit for controlling motor, and the motor commutation of switch control all around, dead person's key are used to have only when operating personnel hold handle could operating equipment, and it is invalid to be not intended to run into handle.

Circuit for controlling motor comprises voltage isolation transmitter, intrinsic safety electric source, division board, Programmable Logic Controller, analog module, IGBT drive plate, IGBT module, current transducer.Analog module receives the velocity setting signal of universal handle and the output signal of current transducer, is used to regulate the voltage that is added in the armature two ends, realize motor speed governing, turn to flexibly, restriction motor maximum current prevents burn-down of electric motor.

Motor-drive circuit comprises D.C. contactor KM1, KM2, KM3, KM4; IGBT module G1, G2; Sustained diode 7, D8, the afterflow when being used for commutation, speed governing, the IGBT module shuts down of motor.

Series DC machine can be realized walking stepless speed regulation, and the excavator feature of low-speed big of mining side discharging car and mining driving drill carriage.

Adopt universal handle, be used for the resistance signal that will change velocity setting, the motor commutation of switch control all around as circuit for controlling motor; Adopt circuit for controlling motor, receive the velocity setting signal of universal handle, be used to regulate the voltage that is added in the armature two ends, realize motor speed governing, turn to flexibly, restriction motor maximum current prevents burn-down of electric motor; Series DC machine can be realized walking stepless speed regulation, and the excavator feature of low-speed big of mining side discharging car and mining driving drill carriage.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is done further to describe in detail:

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is an AC/AC translation circuit of the present utility model.

Fig. 3 is a circuit for controlling motor of the present utility model.

Embodiment

In Fig. 1, provided theory diagram of the present utility model, wherein alternating current through AC/AC translation circuit (1) with the three-phase alternating current step-down; AC/DC change-over circuit (2) is a direct current with the interchange full-wave rectification after the step-down, through capacitor C 1 filtering; With universal handle (4) analog signal that changes is connected circuit for controlling motor (5); Circuit for controlling motor (5) is connected with motor-drive circuit (3), and motor-drive circuit (3) is connected with series DC machine.Current transducer in the motor-drive circuit (3) forms current cut-off negative feedback closed loop control loop for circuit for controlling motor (5) detected signal feedback.

The circuit theory diagrams of the AC/AC translation circuit of the present utility model that in Fig. 1, provides, AC/DC translation circuit, motor-drive circuit, series DC machine in Fig. 2, have been provided.Isolating switch SQ1 introduces three-phase alternating current; fuse FU1; FU2 makes the former limit of transformer short-circuit protection and uses; be connected between the former limit of isolating switch load side and rectifier transformer A mutually with C mutually; the former limit Y of transformer ZB connects; secondary △ connects; be used for High Level AC Voltage is become low-voltage AC; the negative electrode of rectifier diode D1 connects the anode of D2 and is connected rectifier transformer secondary one phase; the negative electrode of rectifier diode D3 connects the anode of D4 and is connected another phase of rectifier transformer secondary; the negative electrode of rectifier diode D5 connects the anode of D6 and is connected the rectifier transformer secondary and remains a phase; rectifier diode D1; D3; the anode of D5 the be connected positive pole and the diode D7 of capacitor C 1; the anode of D8 and D.C. contactor KM2; KM3; KM4; the normal battle of KM5; rectifier diode D2; D4; the negative electrode of D4 the be connected negative pole and the IGBT1 of capacitor C 1; the E utmost point of IGBT2; the C utmost point of IGBT1 connects the negative electrode of diode D7 and the excitation winding of motor M 1; the C utmost point of IGBT2 connects the negative electrode of diode D8 and the excitation winding of motor M 2; D.C. contactor KM2; the normally closed point of KM3 connects the other end of the excitation winding of motor M 1; D.C. contactor KM4; the normally closed point of KM5 connects the excitation winding of motor M 2; the other end of the armature winding of the public termination motor M 1 of normal battle of D.C. contactor KM2 and normally closed point; the other end of the armature winding of the public termination motor M 1 of normal battle of D.C. contactor KM3 and normally closed point; D.C. contactor KM4 is normal make war the other end with the armature winding of the public termination motor M 2 of normally closed point, D.C. contactor KM5 is normal make war the other end with the armature winding of the public termination motor M 2 of normally closed point.Motor M 1 is just being changeed during the adhesive of KM2 coil, has changed during the adhesive of KM3 coil to be added in the polarity motor counter-rotating that motor M 1 armature connects terminal voltage, KM2, KM3 interlocking.Changed during the adhesive of KM4 coil and be added in the polarity motor that motor M 2 armatures connect terminal voltage and just change motor M 2 counter-rotatings during the adhesive of KM5 coil, KM4, KM5 interlocking.Regulate the duty of IGBT1, IGBT2 by circuit for controlling motor and recently regulate the voltage realization electric machine speed regulation that is added in the armature two ends.

Provide circuit for controlling motor schematic diagram of the present utility model in Fig. 3, its core is Programmable Logic Controller CPU222, mainly comprises A/D module EM231CN, universal handle JC6000, drive plate MAST5-2A current transducer CSC8.

Universal handle J1 adopts JC6000 by two identical potentiometer R1, R2 and four direction K switch 1, K2, K3, K4 and dead person's K switch 5 are formed, the anodal DC5+ of two termination 5V intrinsic safety electric sources of each potentiometer, the fixedly medial head of potentiometer meets the negative pole DC5-of 5V intrinsic safety electric source, its sliding end is an analog signal output, potentiometer R1, the analog signal of R2 output output meets voltage isolation transmitter ADZ1 by A1 and A2 line respectively, 3 pin of ADZ2, ADZ1,4 pin of ADZ2 meet the negative pole DC5-of intrinsic safety electric source, voltage isolation transmitter ADZ1,7 of ADZ2,8 pin connect respectively the DC24V Switching Power Supply+and-, voltage isolation transmitter ADZ1,5 of ADZ2,6 pin are the analog signals output after isolating, its 5 end meets the A+ of analog module EM231CN respectively, B+, its 6 end meets the A-of analog module EM231CN respectively, B-.Common port in each K switch of universal handle meets the negative pole DC5-of 5V intrinsic safety electric source; Its normally opened contact connects the input of signal isolation circuit 05-292B respectively by G1, G2, G3, G4, G5 line.

0.0,0.1 output of CPU222 unit connects 3 pin, 5 pin of drive plate MAST5-2A respectively, 3,4 pin short circuits of drive plate, 5,6 pin short circuits; 1,2 pin meet Switching Power Supply DC24V+ by enabling relay K 7; 7,8 pin short circuits meet Switching Power Supply DC24V+; 9,10 pin short circuits meet Switching Power Supply DC24V-; 11,12 pin short circuits connect the input 0.6 of CPU222 unit; 13,14 pin short circuits connect the input 0.7 of CPU222 unit; VIN+, VIN-pin meet Switching Power Supply DC24V+ and DC24V-respectively; C1, E1, G1 pin meet C, E, the G of IGBT1; C2, E2, G2 pin meet C, E, the G of IGBT2.

Current transducer+connect the DC12V Switching Power Supply+12V;-connect the DC12V Switching Power Supply-12V; M meets the C+ of A/D module; M meets the D+ of A/D module.

Analog signals that universal handle sends and switching signal, send into the A/D module and the CPU element of Programmable Logic Controller by buffer circuit, the PWM pulse-width signal that the digital quantity that Programmable Logic Controller changes into the A/D module changes into 0-2KHz is connected to drive plate, the PWM pulse-width signal adjusting duty ratio of sending according to CPU element of opening and turn-off that drive plate drives IGBT realizes that the direct voltage pressure regulation is added in the armature two ends, thereby realizes speed governing.The forward and reverse that realize left and right sides crawler belt motor according to the switching signal all around of universal handle realize turning to of car, and car advances during current switch closure; Car retreats when the switch closure of back; Preceding, left-handed opening while closure is advanced and is turned left; Preceding, right switch while closure is advanced and is turned right; Back, left-handed opening while closure retreat and turn left; Back, right switch while closure retreat and turn right.The current transducer of motor main circuit forms closed-loop control for the A/D module load current feedback, by with the electric current maxima of the smaller restriction of cut-off current value, the protection motor overheating burns.

Claims

1, a kind of mining side unloading rock loader or mining driving drill carriage walking dc drive system under the support of this system based on relative program, is characterized in that this system comprises:

Link to each other, be used for High Level AC Voltage is become the AC/AC translation circuit (1) of low-voltage AC with AC power, this translation circuit is made up of rectifier transformer, and its former limit Y connects, secondary △ connects;

Be used for the alternating current that AC/AC translation circuit (1) step-down obtains is carried out the AC/DC translation circuit (2) of rectification, filtering, its signal input part links to each other with the output of AC/AC translation circuit (1);

Universal handle (4) links to each other with intrinsic safety electric source, is used for the resistance signal that will the change velocity setting as circuit for controlling motor (5), sends analog signals and switching signal;

Be used to regulate the circuit for controlling motor (5) of the voltage that is added in the armature two ends, its signal input part links to each other with the signal output part of universal handle (4);

The motor-drive circuit (3) that is used for the drive motors running, its signal input part links to each other with the signal output part of circuit for controlling motor (5) and AC/DC translation circuit (2), and its signal output part links to each other with the signal input part of the series DC machine (6) that drives the walking of mining side discharging car or mining driving drill carriage.

2, mining side unloading rock loader according to claim 1 or mining driving drill carriage walking dc drive system is characterized in that series DC machine (6) adopts the flame-proof mine DC traction motor.