CN105019907A - Electrical control system for modular digital hydraulic wire saw - Google Patents
Electrical control system for modular digital hydraulic wire saw Download PDFInfo
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- CN105019907A CN105019907A CN201510450234.0A CN201510450234A CN105019907A CN 105019907 A CN105019907 A CN 105019907A CN 201510450234 A CN201510450234 A CN 201510450234A CN 105019907 A CN105019907 A CN 105019907A
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Abstract
The invention provides an electrical control system for a modular digital hydraulic wire saw, which comprises a touch screen operation center, a PLC control center, a traveling working state control system, a traveling dual system control mechanism, a host operation control system, a hydraulic power system, a hydraulic system actuating mechanism and a string bead wire tension detection, regulation and control system, wherein the touch screen operation center is connected with the PLC control center through an RS-485 communication port, the PLC control center integrally operates the traveling working state control system, the traveling dual system control mechanism, the host operation control system and the hydraulic power system through a digital switch (I/O) module and an analog quantity (A/D, D/A) mixing module, and the equipment is directly driven mainly by a high-power, high-rotary speed and speed-adjustable hydraulic motor. The electrical control system has the advantages of light and compact structure, high efficiency and easiness in maintenance.
Description
Technical field
The present invention relates to a kind of Modularized digital hydra-electric control system, especially a kind of Modularized digital hydra-electric control system of saw of restricting.
Background technology
Fluid pressure type diamond wire saw due to the first generation is limited by technical condition at that time, make energy conversion efficiency (because limiting by hydraulic motor rotary speed, usually only have 10---the linear velocity of 20m/s), the restriction of environment and device fabrication cost and being eliminated, instead electrodynamic type diamond wire saw is used widely.
But As time goes on, modern technologies are maked rapid progress---and high-power, the generation of high rotating speed hydraulic motor and " electrohydraulic servo system " for adverse circumstances use, original bottleneck is broken, the application of new technology makes " fluid pressure type diamond wire saw " obtain Nirvana to live again, " a kind of Modularized digital hydraulic pressure rope saw electric-control system " is exactly be born under this background technology condition, the object that this patent is declared makes new advances to push away layer exactly, solve electrodynamic type high-power diamond wire saw head volume and (need waterproof be added greatly, dust-proof motor cover), constrain " head " small and exquisite inverted pattern flexibly and be unfavorable for regular maintenance, cleaning, then there are not these problems in the present age " fluid pressure type diamond wire saw ", but also than general electrical equipment (motor, frequency converter) long-lived, stable, reliably, there is good development prospect.
Summary of the invention
For above problem, the invention provides a kind of Modularized digital hydraulic pressure rope saw electrical control system.
A kind of Modularized digital hydraulic pressure rope saw electrical control system, is characterized in that: comprise touch screen operation center, PLC control centre, walking operation status control system, walking tw o system control mechanism, main frame operation control system, hydraulic power system, hydraulic system executing agency, bead string rope tension detect regulator control system; Described touch screen operation center is connected with PLC control centre by RS-485 PORT COM, PLC control centre is by carrying out programming ensure control in order to walking operation status control system, walking tw o system control mechanism, main frame operation control system, hydraulic power system after data analysis, calculation process, the work of walking tw o system control mechanism, fast state switching control electromagnetic clutch break-make by PLC and complete, and adjust bead string rope tension detect regulator control system by walking mechanism and directive wheel telescoping mechanism.
Described touch screen operation center forms machine operations center by color touch screen, and operating personnel manipulate human-computer dialogue by screen interface (HMI), realizes transmitting operations instruction to PLC module.
The hardware unit of described PLC control centre is made up of the CPU of PLC, digital switch (I/O) module, analog quantity (A/D, D/A) mixing module, every instructions operable is assigned by PLC control centre, the regulation and control action such as flexible of the cutting of coordinative command system, walking and head upset, traversing and tension detect, oil cylinder mechanism, all can work by working procedure requirement is orderly.
Described walking operation status control system is made up of PID module, polarity reverser, PLC gating switch, power amplifier and electricity-liquid proportional commutation flow speed control valve etc.; Be made up of secondary closed control circuit, prime closed control circuit is by PID module composition, and rear stage closed control circuit is made up of high response type flow speed control valve power amplifier and the high response type electricity-liquid proportional flow speed control valve that commutates that commutates; Mainly complete the travelling control function be under normal operating conditions.
Described walking tw o system control mechanism by adjustable speed walk hydraulic drive motor, reductor, electromagnetic clutch, can the quick hydraulic motor travel motor, electromagnetic valve, walking mechanism etc. of bidirectional movement form; Switching, the operational support work of board work, fast walking states is realized by walking dual system.
Described main frame operation control system is made up of polarity reverser, PLC gating switch, power amplifier, electricity-liquid proportional commutation flow speed control valve, main unit hydraulic motor, axle sleeve and large flywheel etc.; Mainly complete the control to main frame, cutting, the function of motion.
Described hydraulic power system is made up of pressure-detecting device, the hot relay protector of electronic type, isolation buffers, the little pump of hydraulic pressure and singlephase drive motor, current transducer checkout gear, comprehensive protection device, phase sequence relay, Y-Δ startup/running gear, the large pump of hydraulic pressure and Three-phase high-power motor body, Hydraulic Station etc.; Be made up of the motivational guarantee mechanism of whole equipment Hydraulic Station, the energy needed for the hydraulic power that the large pump of hydraulic pressure adopts Y-Δ Starting mode mainly to provide host computer system, the little pump of hydraulic pressure adopts direct Starting mode by single-phase low-power motor.
Described hydraulic system executing agency is made up of 6 way solenoid valves, channeling control unit, and guarantee system completes whole system running by the working procedure of PLC.
Described bead string rope tension detect regulator control system detects regulator control system by diamond bead string rope and completes " tension force " detection, sampling, collects, transmits.
The advantage of this invention is:
1, compared with traditional mine stone winning apparatus, hydraulic pressure rope saw has that light structure is compact, efficiency is high, head is lightly nimble, be easy to upset with traversing and be not subject to its body and interfere, the worm gear of its upset of support, worm component and hydraulic overturn motor also can be made to complete Miniaturization Design simultaneously, greatly can reduce and taken up space, dust-proof, waterproof problem in cabinet can be made to be effected a radical cure simultaneously.
2, the feature be even more important has high stock-removing efficiency, torque is large, load capacity is strong and has well overload flood protection feature and maintaining is very convenient.Because hydraulic motor does not fear stone flour and water, can direct water tap to be facing to rinsing very easily, this is the incomparable advantage of electromotor.
3, hydraulic component has long-lived advantage, even if its work a period of time produces some failure problems, but be generally oil circuit plugging fault, hydraulic valve piece need be dismantled and carry out clearing up (available diesel oil cleaning), also just change the "O"-ring of corrupted at most for general.The probability of hardware damage is extremely low, long-lived more than general electrical equipment (motor, frequency converter etc.), stable, reliable.
Accompanying drawing explanation
A kind of Modularized digital hydraulic pressure of Fig. 1 the present invention rope saw electrical control system structure diagram.
A kind of Modularized digital hydraulic pressure of Fig. 2 the present invention rope saw electrical control system operating principle structured flowchart.
To walk in Fig. 3 the present invention operation status control system electrical installation theory structure block diagram.
Detailed description of the invention
In order to there be understanding clearly to technical characteristic of the present invention, object and effect, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 1, 2, a kind of Modularized digital hydraulic pressure rope saw electrical control system forms primarily of eight parts, will be sketched below to this system principle:
1, touch screen operation center: the issue, the transport process that are completed operations instruction by the man-machine dialog interface (HMI) of touch-screen, realize every data setting.The functions such as parameter information collection, display, in this operation interface, be provided with several can for the software push buttons of operation and two software digital potentiometers.One of them software digital potentiometer is used for regulation and control " running gear " needed number data-oriented, be bead string rope given tension value (SV), and by PLC RS-485 serial communication interface by given data input PID (DTC1000L) module, as the given parameters of the target set point (SV) of traveling control system.Another software digital potentiometer is then as the given value of regulating and controlling digital of " main frame " running speed, also by the COM3 serial port of RS-485 serial communication interface by digital given unit value write PLC, the analog signal of 0-10V is exported again by the D/A conversion port (CH6) of PLC, as the given regulation and control value of main frame regulator control system, make main frame running speed can realize the object freely regulated and controled on HMI interface.
2, PLC control centre: the hardware unit of this control centre is made up of the CPU of PLC, digital switch (I/O) module, analog quantity (A/D, D/A) mixing module, PLC to be connected the command signal read in touch-screen by the RS-485 serial communication interface of built-in COM3 and the RS-485 serial communication interface of touch-screen as main website, and transmits desired data, information to it; Simultaneously PLC is again by the RS-485 serial communication interface of built-in COM2 and be connected as the RS-485 serial communication interface of " tension pick-up " of 2# slave station and read (MODRD) " tension data " and digital quantity value in addition after coefficient adjustment (adjusting the man-machine interface windowed time of parameter by touch-screen), calculation process is passed on the feed back input port (PV) of PID module again after " D/A " digital-to-analogue conversion of PLC by " CH5 " port of PLC; PLC is by the RS-485 serial communication interface of COM2 serial ports 3# slave station in parallel PID (DTC1000L) module, write (MODWR) PID module regulating and controlling digital value (given tension value SV), forms the closed loop command signal source of PID module; PLC, by the working procedure of ladder diagram, realizes the Effective Regulation to each functional unit, thus reaches the object that complete machine controls automatically.
3, walking operation status control system: this is the core that native system controls automatically, as shown in Figure 3, this control circuit is primarily of parts compositions such as PID module 30,1# signal polarity reverser 31, PLC gating switch 32, power amplifier 33 and electricity-liquid proportional commutation flow speed control valves 34 for this System Working Principle.Its operating principle is as shown in Figure 3: this system is made up of secondary closed control circuit, and its prime closed control circuit is by PID module composition.The target set-point (SV) of this module is imported into by the RS-485 communication of COM2 by " the given digital quantity value " that PLC is given.Another road is then by PLC's " CH5 port " the 4-20mA analog signal that exports forms the negative-feedback signal (PV) of PID system, the analog signal of the 0-10V exported after the PID arithmetic process of PID inside modules is again using as " the given adjustment signal " of rear stage closed-loop control system, (this signal also introduces the CH2 port of PLC as the basic metering units of the speed of travel simultaneously, change through A/D, data values after computing is resent to touch-screen speed of travel window, the real-time speed of travel situation of display board), stable for making system obtain, reliable smooth adjustment.The present invention introduces " deadzone parameter " in PID system, namely signal fluctuation is not among a small circle adjusted, stable to avoid device to lose in adjusting too frequently, and shorten the application life of adjuster, also be to ensure that bead string rope has better result of use simultaneously, be unlikely to because the speed of travel time fast, time slow, and cause bead string rope be in tensioning frequently, stretching adjustment state and affect the life-span.
Rear stage closed control circuit is made up of the high response type of excellent performance flow speed control valve power amplifier and the high response type electricity-liquid proportional flow speed control valve that commutates that commutates.The port that the given conditioning signal of the 0-10V exported by PID module is inputted by the signal feeding of the gating switch input power amplifier of PLC.And the negative-feedback signal exported by the differential transformer (LVDT) detecting main valve change in location situation in electricity-liquid proportional reversal valve, in power amplifier, carry out combination by feedback port and form closed-loop control system.Therefore this circuit has high accuracy and high reliability, can meet very well board equipment under cut state (namely under normal operating conditions) low speed, steadily walk, thus ensure that the retrogressing speed of travel is consistent with bead string rope tension requirements (i.e. bead string rope elasticity) hight coordinate, all the time be in preferably equalization of strain state, the slightly tight board namely drawn when bead string rope retreats the speed of travel just can be reduced automatically; When bead string rope relaxes board retreat the speed of travel again can automatic lifting, the design concept that the system that achieves controls automatically.
Formed by PLC gating switch and " signal polarity reverser " in the control that positive and negative two directions of this system are run, this signal polarity reverser is then made up of " two road polarity reversers " one piece of double operational integrated circuit and some resistance, one tunnel as the minus polarity signal of walking power amplifier, to control the antiport (i.e. fall back) of hydraulic motor travel motor; Another road as the minus polarity signal of main engine power amplifier, the reversed operation of main control system hydraulic motor.
In addition, be also provided with failure alarm signal as the window to PLC transmission of information at the OUT2 output port of the PID module of this system, substantially increase device security protection class, form the comparatively perfect automatic hierarchy of control.
4, to walk tw o system control mechanism: this system authority can be made up of by the component such as the quick hydraulic motor travel motor 44 of bidirectional movement, 7# electromagnetic valve 45,8# electromagnetic valve 46 and a set of walking mechanism 47 walk hydraulic drive motor 40,1# reductor 41, electromagnetic clutch 42,2# reductor 43, of adjustable speed.
This system authority controls the switching of electromagnetic clutch by PLC, and the switching realized between " duty " and " quick running status " controls.When electromagnetic clutch adhesive, system enters " normal operating conditions ", and hydraulic motor starts running under PLC enabled instruction, and now 1#, 2# reductor combinationally uses, make walking mechanism be in low speed more, steadily, the duty of high pulling torque; When being in off-state under the control of electromagnetic clutch at PLC, the fast turn-around instruction sent by PLC starts fast hydraulic pressure motor dragging 2# reductor, makes walking mechanism complete the function (2.6-3m/min) of board rapid traverse.
For ensureing the safe and reliable of operational system; be provided with program interlock protection function within the system; and the defence program started after " under normal operating conditions " have also been devised first adhesive (the about 1 second) hydraulic motor of clutch, make system more stable, reliable.
5, main frame operation control system: this system is primarily of parts compositions such as 2# polarity reverser 50, PLC gating switch 51, power amplifier 52, electricity-liquid proportional commutation flow speed control valve 53, main unit hydraulic motor 54, axle sleeve and large flywheels 55.This system adopts large discharge open loop control mode, the given signalization of this power amplifier takes from the 0-10V analog quantity conditioning signal of the D/A module output of PLC (CH6 port), export flow that is controlled, linearly ratio adjustment by power amplifier regulable control electricity-liquid proportional commutation flow speed control valve and regulate and control the rotating speed of main unit hydraulic motor, make by the large flywheel of coaxial rotating the cutting " linear velocity " of diamond bead string rope of drawing reach adjustable, controlled object.
6, hydraulic power system: this system is by pressure-detecting device 60, the hot relay protector 61 of electronic type, 1# isolation buffers 62, the little pump of hydraulic pressure and singlephase drive motor 63, current transducer checkout gear 64, comprehensive protection device 65, phase sequence relay 66, 2# isolation buffers 67, Y-Δ startup/running gear 68, the large pump of hydraulic pressure and Three-phase high-power motor body 69, the part compositions such as Hydraulic Station 69A, hydraulic-driven adopts large, the mode that young waiter in a wineshop or an inn's pump controls respectively, the energy needed for the hydraulic power that large pump adopts Y-Δ Starting mode mainly to provide host computer system, in order to reduce the impact of starting current, can arrange and first start large pump motor, automatically started the hydraulic control system of main frame again by system runs program after several seconds, another little pump is then adopted the mode directly started by single-phase low-power motor, for each hydraulic unit of remainder provides required hydraulic power supply, also be provided with phase sequence (automatically can identify, change phase sequence) within the system, the multiple functions such as integrated protection, electric current, pressure detecting, everything is all by PLC instruction operation.
If certainly from the viewpoint of energy-conservation; then can change the startup/method of operation of large pump into variable frequency control mode; namely by the startup of Frequency Converter Control motor, operation, shutdown; and introduce the analog signal of pressure transmitter; as the negative-feedback signal of frequency converter; form closed-loop control system with the given frequency set by frequency converter, frequency converter adjusts suitable output frequency automatically by according to pressure changing, regulates and controls the running speed of motor thus realizes energy-conservation effect.It should be noted that the functions such as " phase sequence, the integrated protection " can cancelled when adopting variable frequency control under Y-Δ Starting mode, these functions be cancelled will be taken by frequency converter.
In hydraulic power system, also can introduce " electrohydraulic servo system " makes the output of system can follow input quantity change automatically, quickly and accurately and change, and power output is amplified significantly, electrohydraulic servo system combines electrically and the advantage of hydraulic pressure two aspect, have that control accuracy is high, fast response time, power output are large, signal transacting flexibly, easily realizes various parameter and feedback, adaptable and energy-conserving and environment-protective, but shortcoming to be use cost higher.
7, hydraulic system executing agency: this mechanism is made up of the component such as 1# electromagnetic valve 70,2# electromagnetic valve 71,3# electromagnetic valve 72,4# electromagnetic valve 73,5# electromagnetic valve 74,6# electromagnetic valve 75, main frame sideslip oil cylinder 76, directive wheel oil cylinder adjusting device 77, hydraulic turnover mechanism 78,1# magnetic switch 79,2# magnetic switch 79A, limiting and protecting device 79B.Its operating principle is as follows:
A. when PLC sends " moving to left " instruction, 1# electromagnetic valve is opened " head is traversing " oil cylinder and is stretched out, and completes " moving to left " action, and wherein 1# magnetic switch is the position limitation protection switch that moves to left;
B., when PLC sends " moving to right " instruction, " head is traversing " oil cylinder retraction opened by 2# electromagnetic valve, and complete " moving to right " action, wherein 2# magnetic switch is the position limitation protection switch that moves to right.
C., when PLC sends static tensile adjustment "+", small flywheel guiding oil cylinder " crawl liter " opened by 3# electromagnetic valve, completes bead string rope slowly tensioning action;
D. when PLC sends static tensile adjustment "-", small flywheel guiding oil cylinder " crawl falls " opened by 4# electromagnetic valve, completes bead string rope slowly loosening up, thus plays the effect of auxiliary fine setting bead string rope tension force elasticity.
E., when PLC sends " left-handed " instruction, 5# electromagnetic valve is opened upset hydraulic motor and is rotated forward, and completes " a head left side is turned over " action;
F. when PLC sends " dextrorotation " instruction; the reversion of upset hydraulic motor opened by 6# electromagnetic valve; complete " the head right side is turned over " action; wherein overturning limiting and protecting device is " energizing signal sensor for countering "; its effect is by preset number restriction flip angle (+/-270 degree), and aforesaid operations is point operation control and contains program interlock protection function.
8, bead string rope tension detect regulator control system: this system is made up of components such as digital tension detect sensor 80, adjustment flywheel tension force transfer device 81, controll plant bodies 82, adjusts bead string rope tension detect regulator control system by " walking mechanism ", " directive wheel telescoping mechanism ".
Finally it should be noted that; above case study on implementation is only in order to illustrate technical scheme of the present invention and unrestricted; although with reference to better case study on implementation to invention has been detailed description; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement; and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claims of the present invention.
Claims (8)
1. a Modularized digital hydraulic pressure rope saw electrical control system, is characterized in that: comprise touch screen operation center, PLC control centre, walking operation status control system, walking tw o system control mechanism, main frame operation control system, hydraulic power system, hydraulic system executing agency, bead string rope tension detect regulator control system; Described touch screen operation center is connected with PLC control centre by RS-485 PORT COM, after PLC control centre analyzing and processing, programme-control is realized to walking operation status control system, walking tw o system control mechanism, main frame operation control system, hydraulic power system, the work of walking tw o system control mechanism, fast walking states switching control electromagnetic clutch break-make by PLC and complete, and adjust bead string rope tension detect regulator control system by walking mechanism and directive wheel telescoping mechanism.
2. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: the hardware unit of described PLC control centre is made up of the CPU of PLC, digital switch module, analog quantity mixing module.
3. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: described walking operation status control system is made up of PID module, polarity reverser, PLC gating switch, power amplifier and electricity-liquid proportional commutation flow speed control valve.
4. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claims 1 to 3, it is characterized in that: described walking operation status control system is made up of secondary closed control circuit, prime closed control circuit is by PID module composition, and rear stage closed control circuit is made up of high response type flow speed control valve power amplifier and the high response type electricity-liquid proportional flow speed control valve that commutates that commutates.
5. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: described walking tw o system control mechanism by adjustable speed walk hydraulic drive motor, reductor, electromagnetic clutch, can the quick hydraulic motor travel motor of bidirectional movement, electromagnetic valve, walking mechanism form.
6. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: described hydraulic power system is made up of pressure-detecting device, the hot relay protector of electronic type, isolation buffers, the little pump of hydraulic pressure and singlephase drive motor, current transducer checkout gear, comprehensive protection device, phase sequence relay, Y-Δ startup/running gear, the large pump of hydraulic pressure and Three-phase high-power motor body, Hydraulic Station; Described Hydraulic Station forms the motivational guarantee mechanism of whole equipment, and the energy needed for the hydraulic power that the large pump of hydraulic pressure adopts Y-Δ Starting mode mainly to provide host computer system, the little pump of hydraulic pressure adopts direct Starting mode by single-phase low-power motor.
7. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: described hydraulic system executing agency is made up of 6 way solenoid valves.
8. a kind of Modularized digital hydraulic pressure rope saw electrical control system according to claim 1, is characterized in that: in described bead string rope tension detect regulator control system, tension detect adopts digital tension detect sensor.
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| CN108612531A (en) * | 2018-03-19 | 2018-10-02 | 深圳市海浦蒙特科技有限公司 | Saw control method of restricting and system |
| CN111283889A (en) * | 2020-03-10 | 2020-06-16 | 北京沃夫动力科技有限责任公司 | Rope saw and automatic rope saw control method |
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Application publication date: 20151104 |