CN204878693U - Output speed controlling means of fluid coupling ware - Google Patents
Output speed controlling means of fluid coupling ware Download PDFInfo
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- CN204878693U CN204878693U CN201520382315.7U CN201520382315U CN204878693U CN 204878693 U CN204878693 U CN 204878693U CN 201520382315 U CN201520382315 U CN 201520382315U CN 204878693 U CN204878693 U CN 204878693U
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Abstract
The utility model relates to a field of the output speed control of fluid coupling ware. For improving control accuracy, the utility model provides an output speed controlling means of fluid coupling ware is including controller, electric servo cylinder, electronic jar driver, stroke sensor and speed sensor, the controller sends control signal and gives electronic jar driver drive electric servo cylinder the operation, the scoop tube rigid connection of electric servo cylinder and fluid coupling ware, the actual stroke of stroke sensors monitor scoop tube feeds back in the controller, speed sensor monitors the output speed of fluid coupling ware and feeds back in the controller, the controller carries out the comparison to actual stroke and target stroke and actual rotational speed and target rotational speed, adjusts control signal according to the difference and carries out the regulation control to the stroke and the actual rotational speed of scoop tube. Adopt this output speed controlling means of fluid coupling ware to control the output speed of fluid coupling ware, improved the response speed of fluid coupling ware and output speed's control accuracy greatly.
Description
Technical field
The utility model relates to the field using hydraulic couplers to control the rotating speed control of the transmission device of rotating speed, particularly relate to a kind of device controlling the output speed of hydraulic couplers, thus realized the control of transmission device as the rotating speed of coke-oven plant's collecting main pressure adjustment lift pump, motor drag blower and water pump by the control of the output speed to hydraulic couplers.
Background technique
At present, the output speed of electric actuator to hydraulic couplers as shown in Figure 1 is usually used to control.This electric actuator comprises motor 01, transmission device 02, output shaft (not shown), valve connecting device 03, control unit 04 and man-operated mechanism 05.When using the output speed of this electric actuator to hydraulic couplers to regulate, the output shaft of electric actuator is connected with the spoon head of the scoop tube in hydraulic couplers by valve connecting device 03, and the control of the output speed to hydraulic couplers is realized by programmable controller (ProgrammableLogicController is called for short PLC).Particularly, the rotating speed of target that operator will reach according to the output shaft of hydraulic couplers, in PLC, input control order outputs a control signal in control unit 04 to make PLC, control unit 04 controls the rotation of motor 01 according to control signal, motor 01 drives output shaft action by valve connecting device 03, realize regulating the stroke of the scoop tube of hydraulic couplers, namely the spoon head position by changing scoop tube changes the oil ring thickness in hydraulic couplers in rotary component, thus the change rotating speed making the loaded output shaft of hydraulic couplers band electrodeless, realize the adjustment to the rotating speed of hydraulic couplers.Because the transmission device such as output shaft and coke-oven plant's collecting main pressure adjustment lift pump, motor drag blower and water pump of hydraulic couplers is connected, namely realize the regulable control to the rotating speed of these transmission device by the regulable control of the output speed to hydraulic couplers.
Due to PLC employing is opened loop control, control unit 04 only can control according to the action of control command to the output shaft of motor 01 of operator's input, and then the output speed of hydraulic couplers is controlled, and cannot control according to the action of the actual speed of hydraulic couplers to the output shaft of motor 01, namely cannot carry out regulable control according to the actual speed of hydraulic couplers to its output speed, automatic control cannot be completed.In addition, when adopting PLC and electric actuator to control as transmission device such as the adjustment of coke-oven plant's collecting main pressure lift pump, motor drag blower and water pumps, the precision of the rotating speed of these transmission device is the highest can only reach positive and negative 50 turns, control accuracy is low, and the scoop tube of hydraulic couplers needs 30 seconds just can cover a stroke, speed of response is slow.
Model utility content
For improving the control accuracy of the output speed of hydraulic couplers, the utility model proposes a kind of output speed control gear of hydraulic couplers, the output speed control gear of this hydraulic couplers comprises controller, servo electric jar, electric cylinder driver, scoop tube stroke sensor and speed probe; The target stroke that described controller inputs according to operator and rotating speed of target export control signal, and this control signal is sent to described electric cylinder driver, drive described servo electric jar to operate; The scoop tube of described servo electric jar and described hydraulic couplers is rigidly connected; Described stroke sensor monitors the traveled distance of described scoop tube, and this traveled distance is converted to travel feedback signal and feeds back in described controller; Described controller compares described traveled distance and described target stroke, and the control signal of difference regulation output according to the two, carry out regulable control with the stroke of the scoop tube to described hydraulic couplers; Described speed probe monitors the output speed of described hydraulic couplers and this output speed is converted to speed feedback signal and feed back in described controller; Described controller compares described output speed and described rotating speed of target, and the control signal of difference regulation output according to the two, to carry out regulable control to the output speed of described hydraulic couplers.
When adopting the output speed of output speed control gear to hydraulic couplers of this hydraulic couplers to control, traveled distance and the target stroke of the scoop tube using stroke sensor to monitor carry out regulable control to the stroke of scoop tube, output speed and the rotating speed of target of the hydraulic couplers using speed probe to monitor carry out regulable control to the output speed of coupling fluid-structure, realize the closed loop control to the stroke of scoop tube and the output speed of hydraulic couplers, scoop tube 1 is made to cover a stroke second, make the precision controlling of the output speed of hydraulic couplers in positive and negative 3 turns, substantially increase the speed of response of hydraulic couplers and the control accuracy of output speed thereof.
Preferably, described controller comprises CPU and FPGA, and described CPU reads the described target stroke, described rotating speed of target, described travel feedback signal and the described speed feedback signal that receive by described FPGA, and carries out comparison operation.Like this, the CPU in controller can read by FPGA the target stroke, rotating speed of target, travel feedback signal and the speed feedback signal that receive in real time, thus improves the speed of response of hydraulic couplers.
Preferably, described controller comprises human-computer interaction interface, and this human-computer interaction interface is for inputting described target stroke and described rotating speed of target.Like this, operator can need target stroke and rotating speed of target to be input in controller according to control, simple to operation.
Preferably, the control signal that described controller exports is PTO burst signal.Like this, controller can send digital signal accurately to control servo electric jar, improves the control accuracy of the output speed of hydraulic couplers.
Preferably, described controller adopts crystal oscillator frequency to be benchmark, and the rotational frequency of the output shaft of the described hydraulic couplers monitored according to described speed probe calculates the output speed of described hydraulic couplers.Like this, adopt crystal oscillator frequency to calculate the output speed of hydraulic couplers as reference measurement, make the precision of the output speed of the hydraulic couplers calculated higher.
Preferably, the described controller rotating speed frequency measurement passage that is configured with the On-off signal output channel with Phototube Coupling function, 4 ~ 20mA electric current AI input channel with low-pass filter circuit and A/D converter and there is bandwidth-limited circuit.Like this, the On-off signal output channel of controller can avoid the impact being subject to ambient light Electrical change, 4-20mA electric current AI input channel can carry out low-pass filtering treatment and analog-to-digital conversion to the speed governing current signal of input, rotating speed frequency measurement passage can carry out bandpass filtering treatment by bandwidth-limited circuit to the speed feedback signal that speed probe sends, thus improves the control accuracy of the output speed control gear of hydraulic couplers.
Preferably, described controller is provided with RCI.Like this, when using the output speed control gear of this hydraulic couplers, the output speed control gear of this hydraulic couplers to be connected with other automatic control systems by RCI and to coordinate by operator, thus realizes other demands for control.
Preferably, described servo electric jar comprises actuating motor, ball screw, encoder and position limit switch, and described actuating motor rotates by the driving of described electric cylinder driver; The angular displacement that described actuating motor rotates is converted to straight journey displacement by described ball screw; Described encoder detects the angular displacement that described actuating motor rotates and the angular displacement signal detected is flowed to described controller, and described angular displacement signal after described controller calculation process as valve position feedback signal feed back in described electric cylinder driver; Described position limit switch is for limiting the zero-bit of described servo electric jar and full position.Further, described controller is provided with RCI.Like this, operator, under power-off or fault state, directly can carry out manually-operable to electric cylinder.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing electric actuator;
Fig. 2 is the structural schematic block diagram of the output speed control gear of the utility model hydraulic couplers.
Embodiment
As shown in Figure 2, the output speed control gear of the utility model hydraulic couplers comprises controller 1, electric cylinder driver 2, servo electric jar 3, stroke sensor 4 and speed probe 5.Before the output speed control gear of hydraulic couplers is started working, the target stroke of rotating speed of target and scoop tube that operator elder generation needs the output speed reached to input the output shaft of hydraulic couplers in controller 1 according to hydraulic couplers 6 is as target instruction target word.Controller 1 couple of operator at the scene or carry out calculation process by the target instruction target word that telecontrol inputs and convert control signal to and export and send to electric cylinder driver 2, thus make electric cylinder driver 2 drive servo electric jar 3 to operate according to control signal.The spoon head of the ball screw of servo electric jar 3 and the scoop tube of hydraulic couplers 6 is rigidly connected, and like this, namely the rectilinear path of the ball screw motion of servo electric jar 3 equals the cephalomotor rectilinear path of spoon of scoop tube.The traveled distance of the scoop tube monitored for the stroke of Real-Time Monitoring scoop tube, and is converted to travel feedback signal and feeds back in controller 1 by stroke sensor 4.After controller 1 receives travel feedback signal, the traveled distance of scoop tube and the target stroke of operator's input are compared, and according to the difference of the two, the control signal that controller 1 exports is regulated, thus regulable control is carried out to the traveled distance of the scoop tube of hydraulic couplers 6 make it equal target stroke.The output speed of speed probe 5 pairs of hydraulic couplerss 6 carries out Real-Time Monitoring, and the output speed of the hydraulic couplers reality monitored is converted to speed feedback signal feeds back in controller 1.After controller 1 receives speed feedback signal, the output speed of hydraulic couplers reality and the rotating speed of target of operator's input are compared, and according to the difference of the two, the control signal that controller 1 exports is regulated, thus regulable control is carried out to the output speed of hydraulic couplers 6 reality make it equal rotating speed of target.
Controller 1 comprises central processing unit (CPU) (CPU) and field programmable gate array (FPGA), CPU reads the target instruction target word received in real time by FPGA, travel feedback signal and speed feedback signal, and the traveled distance of the scoop tube of the target stroke in target instruction target word and hydraulic couplers is compared computing, draw difference therebetween, then according to difference therebetween, the control signal that controller 1 exports is regulated, namely when the traveled distance of scoop tube is less than target stroke, the control signal that adjusting color controls 1 exports, it is made to equal target stroke with the traveled distance of the scoop tube increasing hydraulic couplers 6, when the traveled distance of scoop tube is greater than target stroke, the control signal that adjusting color controls 1 exports, makes it equal target stroke with the traveled distance of the scoop tube reducing hydraulic couplers 6.The output speed of the rotating speed of target in target instruction target word and hydraulic couplers 6 reality compares by CPU, draw difference therebetween, then according to difference, the control signal that controller 1 exports is regulated, namely when the output speed of hydraulic couplers 6 reality is less than rotating speed of target, the control signal that adjusting color controls 1 exports, makes it equal rotating speed of target with the output speed increasing hydraulic couplers reality; When the output speed of hydraulic couplers 6 reality is greater than rotating speed of target, the control signal that adjusting color controls 1 exports, makes it equal rotating speed of target with the output speed reducing coupling fluid-structure reality.Processing time due to the analog input channel on controller 1 is less than 10 milliseconds (ms), the processing time of On-off signal output channel is 5ms, make the CPU in controller 1 to the collection of the signal of input output channel and send more rapid, and the ordering calculation cycle of CPU is less than 50 nanoseconds (ns), therefore the control cycle of the output speed control gear of this hydraulic couplers is less than 5ms, computing is rapid, responds sensitive.Preferably, controller 1 is provided with the liquid crystal display panel with human-computer interaction interface, so that target instruction target word is directly input in controller 1 by human-computer interaction interface by operator.Preferably, the control signal that controller 1 exports is that high-speed pulse string exports (PulseTrainOutput is called for short PTO) signal.Like this, controller 1 can send PTO pulse control signal and control servo electric jar, improve the execution precision of servo electric jar, and relative to PLC, integration is higher, and arithmetic speed is faster, and controlling functions is more powerful.Preferably, controller 1 is configured with multiple I/O signal processing circuit, and such as On-off signal output channel has photoelectric isolating circuit thus makes On-off signal output channel have Phototube Coupling function; 4 ~ 20mA electric current AI input channel has 100 ohm of sampling resistors, second-order low-pass filter circuit and A/D converter, to be sampled by the analog current signal of sampling resistor to input, and the analog current signal that obtains of sampling carries out entering after filtering A/D converter through second-order low-pass filter circuit converts digital signal to and enter in controller 1.The speed feedback signal in sine wave, pyramidal wave or sawtooth waveform monitored is converted to square signal by block isolating circuit, clamp diode and bandwidth-limited circuit and carries out frequency measurement calculating by rotating speed frequency measurement passage, draws the output speed of hydraulic couplers reality.Preferably, controller adopts crystal oscillator frequency to be benchmark, and the rotational frequency of the output shaft of the hydraulic couplers monitored according to speed probe calculates the output speed of hydraulic couplers reality.Preferably, controller 1 is provided with RCI, like this, when using the output speed control gear of this hydraulic couplers, the output speed control gear of this hydraulic couplers to be connected with other automatic control systems by RCI and to coordinate by operator, thus realizes other demands for control.
Servo electric jar 3 comprises actuating motor, ball screw, Timing Belt, encoder and position limit switch, and actuating motor is connected with electric cylinder driver 2 and operates under the driving of electric cylinder driver 2.Ball screw is connected with the output shaft of actuating motor by Timing Belt, and under the drive of actuating motor, rotates advance by Timing Belt or retreat, thus the angular displacement that the output shaft of actuating motor rotates is converted to straight journey displacement.The angular displacement that encoder rotates for the output shaft detecting actuating motor, and send the angular displacement signal detected to controller 1, after this angular displacement signal via controller 1 calculation process as valve position feedback signal feed back in electric cylinder driver 2, thus electric cylinder driver 2 is regulated servo electric jar 3 according to valve position feedback signal, and then formation regulates the closed-loop feedback of servo electric jar 3, namely the closed-loop feedback forming the stroke of the scoop tube to hydraulic couplers regulates, and improves the control accuracy of scoop tube stroke.Position limit switch is for limiting the zero-bit of servo electric jar 3 and full position.Preferably, servo electric jar 3 is provided with manual-operating mechanism, so that operator are under power-off or fault state, directly manually-operable is carried out to servo electric jar 3.
Claims (9)
1. an output speed control gear for hydraulic couplers, is characterized in that, the output speed control gear of this hydraulic couplers comprises controller, servo electric jar, electric cylinder driver, scoop tube stroke sensor and speed probe; The target stroke that described controller inputs according to operator and rotating speed of target export control signal, and this control signal is sent to described electric cylinder driver, drive described servo electric jar to operate; The scoop tube of described servo electric jar and described hydraulic couplers is rigidly connected; Described stroke sensor monitors the traveled distance of described scoop tube, and this traveled distance is converted to travel feedback signal and feeds back in described controller; Described controller compares described traveled distance and described target stroke, and the control signal of difference regulation output according to the two, carry out regulable control with the stroke of the scoop tube to described hydraulic couplers; Described speed probe monitors the output speed of described hydraulic couplers and this output speed is converted to speed feedback signal and feed back in described controller; Described controller compares described output speed and described rotating speed of target, and the control signal of difference regulation output according to the two, to carry out regulable control to the output speed of described hydraulic couplers.
2. the output speed control gear of hydraulic couplers according to claim 1, it is characterized in that, described controller comprises CPU and FPGA, described CPU reads the described target stroke, described rotating speed of target, described travel feedback signal and the described speed feedback signal that receive by described FPGA, and carries out comparison operation.
3. the output speed control gear of hydraulic couplers according to claim 2, is characterized in that, described controller comprises human-computer interaction interface, and this human-computer interaction interface is for inputting described target stroke and described rotating speed of target.
4. according to the control gear of the output speed of the hydraulic couplers in claim 1-3 described in any one, it is characterized in that, the control signal that described controller exports is PTO burst signal.
5. according to the output speed control gear of the hydraulic couplers in claim 1-3 described in any one, it is characterized in that, described controller adopts crystal oscillator frequency to be benchmark, and the rotational frequency monitoring the output shaft of described hydraulic couplers according to described speed probe calculates the output speed of described hydraulic couplers.
6. according to the output speed control gear of the hydraulic couplers in claim 1-3 described in any one, it is characterized in that, the rotating speed frequency measurement passage that described controller is configured with the On-off signal output channel with Phototube Coupling function, 4 ~ 20mA electric current AI input channel with low-pass filter circuit and AD converter and has bandwidth-limited circuit.
7. according to the output speed control gear of the hydraulic couplers in claim 1-3 described in any one, it is characterized in that, described controller is provided with RCI.
8. according to the output speed control gear of the hydraulic couplers in claim 1-3 described in any one, it is characterized in that, described servo electric jar comprises actuating motor, ball screw, encoder and position limit switch, and described actuating motor rotates by the driving of described electric cylinder driver; The angular displacement that described actuating motor rotates is converted to straight journey displacement by described ball screw; Described encoder detects the angular displacement that described actuating motor rotates and the angular displacement signal detected is flowed to described controller, and described angular displacement signal after described controller calculation process as valve position feedback signal feed back in described electric cylinder driver; Described position limit switch is for limiting the zero-bit of described servo electric jar and full position.
9. the output speed control gear of hydraulic couplers according to claim 8, is characterized in that, described servo electric jar is provided with manual-operating mechanism.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520382315.7U CN204878693U (en) | 2015-06-05 | 2015-06-05 | Output speed controlling means of fluid coupling ware |
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| CN201520382315.7U CN204878693U (en) | 2015-06-05 | 2015-06-05 | Output speed controlling means of fluid coupling ware |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168788A (en) * | 2016-07-29 | 2016-11-30 | 广东工业大学 | A kind of carrier rotating control assembly and control method thereof |
| CN106979327A (en) * | 2017-05-18 | 2017-07-25 | 山东济钢合金材料科技有限公司 | A kind of many gear speed governing of fluid coupling and equipment safety operation control system and its implementation |
-
2015
- 2015-06-05 CN CN201520382315.7U patent/CN204878693U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106168788A (en) * | 2016-07-29 | 2016-11-30 | 广东工业大学 | A kind of carrier rotating control assembly and control method thereof |
| CN106168788B (en) * | 2016-07-29 | 2019-05-07 | 广东工业大学 | A kind of carrying disc rotation controller and its control method |
| CN106979327A (en) * | 2017-05-18 | 2017-07-25 | 山东济钢合金材料科技有限公司 | A kind of many gear speed governing of fluid coupling and equipment safety operation control system and its implementation |
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