CN109185282B - pre-overload intelligent switching rotating system and intelligent switching control method - Google Patents
pre-overload intelligent switching rotating system and intelligent switching control method Download PDFInfo
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- CN109185282B CN109185282B CN201811043287.0A CN201811043287A CN109185282B CN 109185282 B CN109185282 B CN 109185282B CN 201811043287 A CN201811043287 A CN 201811043287A CN 109185282 B CN109185282 B CN 109185282B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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Abstract
The invention discloses an pre-overload intelligent switching rotating system which comprises a power supply, a PLC (programmable logic controller), a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay, an alternating current contactor and a pressure pre-overload intelligent switching control module, wherein the pressure pre-overload intelligent switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure value and database information comparison unit and a switching control mode control unit, the pressure detection unit is used for controlling the pressure sensor to detect a pressure value analog signal in the operation process of the oil cylinder and transmit the pressure value analog signal to the PLC, the pressure value is detected, the oil cylinder operation mode control section unit is implanted with preset operation mode information of the four oil cylinders and corresponding switching state information, speed information and the like.
Description
Technical Field
The invention belongs to the technical field of hydraulic system control, and particularly relates to a rotary system for pre-overload intelligent switching and an intelligent switching control method.
Background
When the existing photo-thermal day-by-day rotating system works, due to the fact that the system needs to switch the telescopic rotation of the oil cylinder according to the solar track, the oil cylinder can cause overlarge pressure numerical value accumulation due to a rotating dead angle, and the oil cylinder needs to be switched during working; in the existing photothermal day-by-day rotating system, manual measurement and calculation oil cylinder switching is mostly adopted, the calculation workload is large, the switching point is inaccurate, the system operation is blocked and stagnated during switching, and the accumulated pressure after switching cannot be completely eliminated, so that the continuous pressure is accumulated to the next switching point, and mechanical wear and even failure are easy to occur; or the resulting day-to-day continuity is interrupted, the efficiency of the heat energy accumulation is not high, and the cost input and the equipment operation and maintenance cost are increased. The control method can improve the existing problems.
Disclosure of Invention
In order to solve the problems, the invention provides pre-overload intelligent switching rotating systems, which comprise a PLC controller, a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay and an alternating current contactor, wherein the PLC controller comprises a pressure pre-overload intelligent switching control module, and the pressure pre-overload intelligent switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure value and database information comparison unit and a switching control mode control unit.
The invention aims to realize the technical scheme that the pre-overload intelligent switching rotary system comprises a power supply, a PLC (programmable logic controller), a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay, an alternating current contactor and a pressure pre-overload intelligent switching control module, wherein the pressure pre-overload intelligent switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure numerical value and database information comparison unit and a switching control mode control unit;
the pressure detection unit is used for controlling the pressure sensor to detect a pressure value analog signal in the operation process of the oil cylinder and transmitting the pressure value analog signal to the PLC, so that the pressure value is obtained;
the oil cylinder operation mode control section unit is implanted with preset operation mode information of four oil cylinders and corresponding switching state information, speed information and the like;
the pressure value and database information comparison unit calculates and converts the real-time pressure value analog signal into real-time pressure value information in the PLC, and then compares the real-time pressure value information with pressure data in a database in the controller;
the switching control mode control unit is used for switching the operation mode of the oil cylinder according to the comparison information and recording the times;
the intermediate relay and the alternating current contactor realize the switching control of each operation mode of the oil cylinder through the on-off of the intermediate relay and the alternating current contactor.
Preferably, the power oil cylinders are oil cylinders and two oil cylinders, and the operation modes are four, namely oil cylinders extending out and oil cylinders retracting, oil cylinders retracting and oil cylinders extending out.
Preferably, the system further comprises a circuit breaker for performing power overload protection.
Preferably, the rotating system further comprises a touch screen.
The pre-overload intelligent switching control method of the rotary system with pre-overload intelligent switching comprises the following steps:
step , presetting a pressure database, and presetting operation mode information of No. oil cylinder and No. two oil cylinder, corresponding switching state information, speed information and the like in the oil cylinder operation mode control section unit;
starting a rotating system, and starting an No. oil cylinder and a No. two oil cylinder to rotate according to a preset initial operation mode and an initial operation speed;
step three: the pressure detection unit controls the pressure sensor to continuously detect the pressure and transmits the obtained pressure value analog signal to the PLC;
step four: the PLC judges whether the pressure data in the pressure database are consistent or not, if yes, the step five is carried out, and if not, the step three is returned;
switching to a lower oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and continue to exist, performing a sixth step, otherwise, keeping the previous operation state;
switching the oil cylinder and the second oil cylinder to a third oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and exist continuously, performing the seventh step, otherwise, keeping the previous operation state;
switching the No. oil cylinder and the No. two oil cylinder to a fourth oil cylinder operation mode, comparing the real-time pressure value with the database data again, if the pressure data is identical and continues to exist, performing the step eight, otherwise, keeping the previous operation state;
step eight, switching the # oil cylinder and the second oil cylinder to the # oil cylinder operation mode, if the pressure data are consistent and continue to exist, performing the step nine, otherwise, keeping the previous operation state;
and step nine, switching the oil cylinder and the second oil cylinder to a second oil cylinder operation mode, completing the switching of periods in a set time period in the system operation mode, sending an alarm signal by the system and stopping the machine, otherwise, keeping the previous operation state.
Preferably, in the ninth step, the switching mode of the cylinder No. and the cylinder No. two is repeatedly switched in the same operation segment.
The invention has the beneficial effects that:
the defects of an existing photo-thermal day-by-day system and other similar rotating systems are improved, intelligent and efficient novel pre-overload intelligent switching rotating systems are designed, a pre-overload intelligent switching control program is arranged in the existing photo-thermal day-by-day rotating system, real-time data are compared, a dynamic switching oil cylinder is completed before pressure accumulation is too high, and mechanical damage to the system or a support due to the pressure accumulation is avoided.
Drawings
FIG. 1 is a flow chart of an intelligent switching control method of a rotary system of two oil cylinders;
figure 2 is an external view of the rotary system.
Detailed Description
The following describes the technical solution of the present invention in detail in steps with reference to the drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 2, rotary systems for pre-overload intelligent switching comprise a power supply, a PLC controller, a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay, an ac contactor, and a pressure pre-overload intelligent switching control module, wherein the pressure pre-overload intelligent switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure value and database information comparison unit, and a switching control mode control unit;
the pressure detection unit is used for controlling the pressure sensor to detect a pressure value analog signal in the operation process of the oil cylinder and transmitting the pressure value analog signal to the PLC, so that the pressure value is obtained;
the oil cylinder operation mode control section unit is implanted with preset operation mode information of four oil cylinders and corresponding switching state information, speed information and the like;
the pressure value and database information comparison unit calculates and converts the real-time pressure value analog signal into real-time pressure value information in the PLC, and then compares the real-time pressure value information with pressure data in a database in the controller;
the switching control mode control unit is used for switching the operation mode of the oil cylinder according to the comparison information and recording the times;
the intermediate relay and the alternating current contactor realize the switching control of each operation mode of the oil cylinder through the on-off of the intermediate relay and the alternating current contactor.
In preferred embodiments, the power oil cylinders are provided with two No. oil cylinders and two oil cylinders, and the operation modes are divided into four modes, namely No. oil cylinder extending and No. two oil cylinders extending, No. oil cylinder extending and No. two oil cylinders retracting, No. oil cylinder retracting and No. two oil cylinders retracting, No. oil cylinder retracting and No. two oil cylinders extending.
In preferred embodiments, the system further comprises a circuit breaker for power overload protection.
In preferred embodiments, the rotary system further comprises a touch screen to complete the input process of the system man-machine communication, the output process is completed by the PLC, and the rotary system further comprises a circuit breaker used for performing overload protection on the power supply to complete the on-off control of the system circuit.
When the real-time pressure value matches the pressure database data, the rotary system switches to the next modes of operation in an attempt to reduce or eliminate the pressure build-up between the cylinder and the carriage.
As shown in fig. 1, the pre-overload intelligent switching control method for the pre-overload intelligent switching rotary system includes the following steps:
step , presetting a pressure database, and presetting operation mode information of No. oil cylinder and No. two oil cylinder, corresponding switching state information, speed information and the like in the oil cylinder operation mode control section unit;
starting a rotating system, and starting an No. oil cylinder and a No. two oil cylinder to rotate according to a preset initial operation mode and an initial operation speed;
step three: the pressure detection unit controls the pressure sensor to continuously detect the pressure and transmits the obtained pressure value analog signal to the PLC;
step four: the PLC judges whether the pressure data in the pressure database are consistent or not, if yes, the step five is carried out, and if not, the step three is returned;
switching to a lower oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and continue to exist, performing a sixth step, otherwise, keeping the previous operation state;
switching the oil cylinder and the second oil cylinder to a third oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and exist continuously, performing the seventh step, otherwise, keeping the previous operation state;
switching the No. oil cylinder and the No. two oil cylinder to a fourth oil cylinder operation mode, comparing the real-time pressure value with the database data again, if the pressure data is identical and continues to exist, performing the step eight, otherwise, keeping the previous operation state;
step eight, switching the # oil cylinder and the second oil cylinder to the # oil cylinder operation mode, if pressure data are consistent and continue to exist, performing the step nine, otherwise, keeping the previous operation state;
and step nine, switching the oil cylinder and the second oil cylinder to a second oil cylinder operation mode, completing periods of switching in a set time period in the system operation mode (the 4-clock mode completes the alternation in the set time, and the operation requirement is considered to be not normally executed), sending an alarm signal by the system and stopping the machine, otherwise, keeping the previous operation state.
In preferred embodiments, in the ninth step, the switching mode of the No. oil cylinder and the No. two oil cylinder is repeatedly switched in the same operation segment
When the existing photo-thermal day-by-day rotating system works, due to the fact that the system needs to switch the telescopic rotation of the oil cylinder according to the solar track, the oil cylinder can cause overlarge pressure numerical value accumulation due to a rotating dead angle, and the oil cylinder needs to be switched during working; in the existing photothermal day-by-day rotating system, manual measurement and calculation oil cylinder switching is mostly adopted, the calculation workload is large, the switching point is inaccurate, the system operation is blocked and stagnated during switching, and the accumulated pressure after switching cannot be completely eliminated, so that the continuous pressure is accumulated to the next switching point, and mechanical wear and even failure are easy to occur; or the resulting day-to-day continuity is interrupted, the efficiency of the heat energy accumulation is not high, and the cost input and the equipment operation and maintenance cost are increased. The control method can improve the existing problems.
The invention provides rotary systems with intelligent pre-overload switching and intelligent switching control methods, wherein each rotary system comprises a PLC (programmable logic controller), a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay and an alternating current contactor, the PLC is provided with an intelligent pressure pre-overload switching control module, and the intelligent pressure pre-overload switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure value and database information comparison unit and a switching control mode control unit.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
- The rotary system with intelligent pre-overload switching is characterized by comprising a power supply, a PLC (programmable logic controller), a pressure sensor, a hydraulic system, two oil cylinders, an intermediate relay, an alternating current contactor and a pressure pre-overload intelligent switching control module, wherein the pressure pre-overload intelligent switching control module comprises a pressure detection unit, an oil cylinder operation mode control section unit, a pressure value and database information comparison unit and a switching control mode control unit;the pressure detection unit is used for controlling the pressure sensor to detect a pressure value analog signal in the operation process of the oil cylinder and transmitting the pressure value analog signal to the PLC, so that the pressure value is obtained;the oil cylinder operation mode control section unit is implanted with preset operation mode information of four oil cylinders and corresponding switching state information and speed information;the pressure value and database information comparison unit calculates and converts the real-time pressure value analog signal into real-time pressure value information in the PLC, and then compares the real-time pressure value information with pressure data in a database in the controller;the switching control mode control unit is used for switching the operation mode of the oil cylinder according to the comparison information and recording the times;the intermediate relay and the alternating current contactor realize the switching control of each operation mode of the oil cylinder through the on-off of the intermediate relay and the alternating current contactor.
- 2. The pre-overload intelligent switching rotating system according to claim 1, wherein the two power cylinders are cylinders and two cylinders, and the operation modes are four, i.e., cylinder extension, cylinder extension, second cylinder retraction, cylinder retraction, second cylinder retraction, cylinder retraction, and second cylinder extension.
- 3. The rotary pre-overload smart switching system according to claim 1, further comprising a circuit breaker for power overload protection.
- 4. The pre-overload intelligent switching rotary system of claim 1, wherein the rotary system further comprises a touch screen.
- 5. The pre-overload intelligent switching control method for the pre-overload intelligently switched rotating system according to any in claims 2 to 4, comprising the steps of:step , presetting a pressure database, and presetting operation mode information of No. oil cylinder and No. two oil cylinder and corresponding switching state information and speed information in the oil cylinder operation mode control section unit;starting a rotating system, and starting an No. oil cylinder and a No. two oil cylinder to rotate according to a preset initial operation mode and an initial operation speed;step three: the pressure detection unit controls the pressure sensor to continuously detect the pressure and transmits the obtained pressure value analog signal to the PLC;step four: the PLC judges whether the pressure data in the pressure database are consistent or not, if yes, the step five is carried out, and if not, the step three is returned;switching to a lower oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and continue to exist, performing a sixth step, otherwise, keeping the previous operation state;switching the oil cylinder and the second oil cylinder to a third oil cylinder operation mode, detecting the pressure again by the pressure sensor, if the pressure data are consistent and exist continuously, performing the seventh step, otherwise, keeping the previous operation state;switching the No. oil cylinder and the No. two oil cylinder to a fourth oil cylinder operation mode, comparing the real-time pressure value with the database data again, if the pressure data is identical and continues to exist, performing the step eight, otherwise, keeping the previous operation state;step eight, switching the # oil cylinder and the second oil cylinder to the # oil cylinder operation mode, if the pressure data are consistent and continue to exist, performing the step nine, otherwise, keeping the previous operation state;and step nine, switching the oil cylinder and the second oil cylinder to a second oil cylinder operation mode, completing the switching of periods in a set time period in the system operation mode, sending an alarm signal by the system and stopping the machine, otherwise, keeping the previous operation state.
- 6. The pre-overload intelligent switching control method for the pre-overload intelligent switching rotary system according to claim 5, wherein in the ninth step, the switching mode of the # cylinder and the second # cylinder is repeatedly switched in the same operation segment.
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| JP3268527B2 (en) * | 1996-09-25 | 2002-03-25 | 株式会社パブコ | Control method of lifting device |
| CN105195300B (en) * | 2015-11-13 | 2017-07-21 | 四川川润液压润滑设备有限公司 | It is a kind of to overload the rotating shaft disintegrating machine and its overload controlling method of intelligent control |
| CN105605035B (en) * | 2016-03-17 | 2017-08-25 | 四川川润液压润滑设备有限公司 | A kind of constant pressure hydraulic thrust control system and control method for sludge plunger pump |
| CN107479584A (en) * | 2017-09-26 | 2017-12-15 | 时枫娇 | A kind of intelligent solar TRT with automatic regulation function |
| CN107605873B (en) * | 2017-11-10 | 2019-04-30 | 四川川润液压润滑设备有限公司 | A kind of error correction control system and working method for sludge plunger pump |
| CN108162057B (en) * | 2017-12-19 | 2020-05-05 | 德普惠（福建）自动化设备有限公司 | Rotary die cutting pressure regulating device and rotary die cutting assembly |
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