CN218377112U - Large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch - Google Patents
Large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch Download PDFInfo
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Abstract
The utility model discloses a large derrick deviation-rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation and high speed switch, which is suitable for the deviation-rectifying reset of a large derrick and comprises a plurality of sets of variable frequency speed regulation and high speed switch high-voltage systems and a central control system; each set of high-pressure hydraulic system comprises a plurality of high-pressure double-acting oil cylinders, supporting legs of the derrick are jacked together, and a central control system is adopted for centralized control and a plurality of sets of hydraulic systems work in parallel, so that system expansion and networking are facilitated, and synchronous control of different points is met. The multipoint synchronous electro-hydraulic control system has the advantages of high synchronous precision, multiple synchronous points, small system volume, good energy-saving effect, high safety and the like.
Description
Technical Field
The utility model belongs to the technical field of the synchro control and specifically relates to the multipoint synchro control field that large-scale derrick rectified deviation and resets.
Background
The derrick is an important structure of a mine hoisting system. The long-time heavy-load operation of the hoisting system and the uneven settlement of the derrick foundation can cause the deviation of the derrick hoisting center, seriously affect the normal operation of the hoisting system and endanger the safe production.
The height and the weight of the large derrick are large, and the current world maximum vertical shaft derrick is 110 meters high and weighs 1438 tons. At present, the mine develops towards the direction of super large diameter and super depth, and the control on the inclination of a derrick is increasingly strict. At present, a plurality of jacks are operated to lift and subside a plurality of supporting legs by mainly depending on manual climbing into a narrow culvert so as to realize deviation rectification and resetting of a derrick. The lifting synchronous precision cannot be guaranteed through manual operation, so that the contact surface of the jack and the support leg slides, the jack is easily damaged, great potential safety hazards exist, the manual deviation rectifying process is complex, and the working efficiency is low. Because the culvert space for installing the derrick jacking device is narrow, a hydraulic synchronous system (rated pressure of 35MPa and controlled by a proportional valve or a servo valve) with conventional pressure cannot be applied, and the supporting legs have two-dimensional motions of translation and rotation when being jacked. At present, a high-pressure synchronous hydraulic system (rated pressure 70 MPa) is mainly used in the fields of bridge jacking, building pushing and the like, has the outstanding problems of poor unbalance loading resistance, few control points, low synchronous precision, low hydraulic system efficiency and the like, and is difficult to meet the working condition and the requirement of large-scale derrick deviation correction.
SUMMERY OF THE UTILITY MODEL
The great demand to the not enough and large-scale derrick of above-mentioned technique of rectifying, the utility model provides a safe efficient large-scale derrick is rectified and is used multiple spot synchronous control system can realize 12 points, 24 points and above multiple spot synchronous jacking and decline.
In order to realize the technical purpose, the utility model discloses a large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch comprises a plurality of sets of variable frequency speed regulation-high speed switch high-voltage systems and a central control system; each set of high-pressure hydraulic system comprises a plurality of high-pressure double-acting oil cylinders which jointly lift up supporting legs of the derrick, and the central control system is connected and communicated with the plurality of sets of hydraulic systems through data lines so as to monitor and control synchronous displacement of the plurality of high-pressure double-acting oil cylinders, thereby realizing deviation rectification and resetting of the large derrick; the central control system is adopted for centralized control, and a plurality of sets of hydraulic systems work in parallel, so that system expansion and networking are facilitated, and synchronous control of different points is met;
the variable-frequency speed regulation-high-speed switch high-pressure system comprises a variable-frequency speed regulation pump station and a plurality of control branches connected in parallel, wherein each control branch comprises a control valve group, a high-pressure hose, a high-pressure double-acting oil cylinder, an adsorption type displacement sensor and a pressure sensor, the control valve groups are connected in series between the variable-frequency speed regulation pump station and the high-pressure double-acting oil cylinder and used for controlling the ascending and descending actions of the high-pressure double-acting oil cylinder, and the variable-frequency speed regulation pump station provides adjustable system flow for the system so as to control the synchronous ascending and descending speed;
the variable-frequency speed regulation pump station comprises a variable-frequency driver, a variable-frequency speed regulation motor, a high-pressure radial plunger pump, a safety valve bank and an oil tank, wherein the variable-frequency driver is connected with the variable-frequency speed regulation motor through a cable, the variable-frequency speed regulation motor is mechanically connected with the high-pressure radial plunger pump, the inlet of the high-pressure radial plunger pump is connected with the oil tank, the outlet of the high-pressure radial plunger pump is connected with the control valve bank, the variable-frequency driver is used for regulating the rotating speed of the motor and controlling the flow rate of the high-pressure radial plunger pump, so that the synchronous speed is controlled; the safety valve group is connected in parallel with the outlet of the high-pressure radial plunger pump, so that the system has different overflow pressures when the oil cylinder is lifted up and lowered down;
the control valve group comprises a high-speed switch valve, a hydraulic control one-way valve and a one-way throttle valve, wherein the high-speed switch valve has three-position four-way and Y-shaped middle position functions, a port P of the high-speed switch valve is connected with an outlet of a high-pressure radial plunger pump, a port A is connected with a small cavity of a high-pressure double-acting oil cylinder and a port K of the hydraulic control one-way valve through a high-pressure hose, a port B is sequentially connected with the hydraulic control one-way valve and the one-way throttle valve, and the one-way throttle valve is connected with a large cavity of the high-pressure double-acting oil cylinder through the high-pressure hose; the ascending and descending of the high-pressure double-acting oil cylinder are controlled by switching the high-speed switch valve to be positioned at different working positions; when the high-pressure double-acting oil cylinder descends, the one-way throttle valve generates back pressure to control the descending speed, and meanwhile, the hydraulic control one-way valve is opened and closed intermittently to prevent overspeed descending;
the top end of the extension rod of the high-pressure double-acting oil cylinder is provided with a deflection head, one end of the deflection head is a plane and is contacted with the bottom surface of the box-shaped supporting leg, and the other end of the deflection head is hemispherical and is contacted with the spherical surface at the top end of the extension rod; when jacking, the deflection head deflects along with the box-type supporting leg, so that the stress of the high-pressure double-acting oil cylinder is always along the axis direction of the piston rod, and the high-pressure double-acting oil cylinder is prevented from being damaged due to unbalanced load; a hollow measuring plate is arranged between the deflection head and the extension rod, a measuring head of the adsorption type displacement sensor is adsorbed at the extension end of the measuring plate, and the measuring plate can be kept still when the deflection head deflects so as to ensure the precision of displacement measurement; quick plugs with one-way conduction functions are arranged at the oil inlet and the oil outlet of the high-pressure double-acting oil cylinder and at the two ends of the high-pressure hose, so that the pipeline can be conveniently and quickly connected, and the oil in the high-pressure double-acting oil cylinder and the oil in the high-pressure hose can be prevented from leaking outwards when the pipeline is pulled out;
the adsorption type displacement sensor is adsorbed on the outer wall of the high-pressure double-acting oil cylinder, the adsorption position of the adsorption type displacement sensor is adjustable, the adsorption type displacement sensor is used for detecting the displacement of the high-pressure double-acting oil cylinder, and the pressure sensor is connected in parallel with an outlet of the high-pressure radial plunger pump and an outlet of the one-way throttle valve and is used for detecting the pressure of a system and the large cavity pressure of the high-pressure double-acting oil cylinder;
the central control system mainly comprises a data acquisition unit, a controller and an upper computer which are connected through a data line, wherein the data acquisition unit acquires pressure signals of all parts of the system and displacement signals of the high-pressure double-acting oil cylinders and feeds the pressure signals and the displacement signals back to the controller, the controller outputs signals to a variable-frequency driver after operation so as to control the rotating speed of a variable-frequency speed regulating motor, thereby regulating the flow output by the high-pressure radial plunger pump, and meanwhile, the controller sends signals to a high-speed switch valve to control the switching frequency of the high-speed switch valve, thereby cooperatively controlling the actions of the multiple high-pressure double-acting oil cylinders, and the upper computer is communicated with the controller and used for monitoring the running state of the system, setting system parameters and switching a working model.
Has the beneficial effects that:
the utility model discloses a large-scale derrick multipoint synchronization electric hydraulic control system that rectifies fuses frequency conversion hydraulic pressure speed governing technique and high speed switch control technique, has following technical advantage:
(1) The rotating speed of the variable frequency motor is adjusted according to the number and the speed of the synchronous points so as to control the flow of the system, thereby avoiding overflow loss and having good energy-saving effect;
(2) The multi-path high-speed switch valve is arranged in front of the pump and the oil cylinders, and the displacement of the oil cylinders is controlled by utilizing the quick switch of the high-speed switch valve, so that the synchronous control of a single pump and multiple actuators is realized, the interference of the load deviation of the oil cylinders is avoided, the unbalance loading resistance is strong, and the synchronous precision of the system is high. Practice has shown that: the error of the synchronous position of 12 points under large offset load is less than 0.5mm, so that the requirement of deviation rectification of a large derrick can be met;
(3) The 70 MPa-grade high-pressure hydraulic element is adopted, has the advantages of small volume and large jacking force, is suitable for carrying out deviation rectifying operation in narrow culverts, and meanwhile, the upper part of the oil cylinder is provided with the deflection head, and the rotatable supporting legs rotate, so that the oil cylinder can be prevented from being damaged due to lateral force;
(4) Each set of variable frequency speed regulation pump station controls a plurality of high-pressure double-acting oil cylinders, and the central control system controls a plurality of sets of variable frequency speed regulation pump stations, so that the structure is convenient for expansion and networking, and can realize synchronous control of hundreds of points;
(5) The hydraulic system is provided with multiple safety protections such as a safety valve and a hydraulic control one-way valve, the jacking load can be kept not to fall even if a pipe is burst, and the system has the advantage of high safety.
Drawings
FIG. 1 is a schematic diagram of the foundation of 4 support legs of the large derrick
Figure 2 is the oil cylinder jacking layout of a supporting leg of the utility model
FIG. 3 is the structure schematic diagram of the large derrick deviation rectifying multipoint synchronous electro-hydraulic control system of the utility model
FIG. 4 is a hydraulic schematic diagram of the variable frequency speed control-high speed switch high-voltage system of the present invention
FIG. 5 is a schematic view of the high-pressure double-acting oil cylinder with deflection ball head of the present invention
FIG. 6 shows the multi-cylinder synchronous control measurement and control principle of the present invention
FIG. 7 shows the experimental effect of the multi-point synchronous electrohydraulic control system of the present invention
In the figure: 1-box type supporting leg, 2-concrete foundation, 3-shaft, 4-culvert, 100-variable frequency speed regulation-high speed switch high-pressure system, 110-variable frequency speed regulation pump station, 111-variable frequency driver, 112-variable frequency speed regulation motor, 113-high pressure radial plunger pump, 114-safety valve bank, 115-oil tank, 120-control valve bank, 121-high speed switch valve, 122-hydraulic control one-way valve, 123-one-way throttle valve, 130-high pressure hose, 131-quick plug with one-way conduction function, 140-high pressure double-acting oil cylinder, 141-deflection head, 142-measuring plate, 150-adsorption type displacement sensor, 160-pressure sensor, 200-central control system, 210-data acquisition unit, 220-controller, 230-upper computer
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
In a typical embodiment, each set of variable-frequency speed regulation-high-speed switch high-pressure system comprises 6 high-pressure double-acting oil cylinders, and the lifting of two supporting legs is controlled by utilizing the synchronous action of 12 oil cylinders in total of two sets of hydraulic systems so as to correct the deviation of the large derrick.
As shown in fig. 1 and 2, the large derrick is supported by 4 box-type supporting legs 1, a concrete foundation 2 is arranged below the box-type supporting legs 1, and the height of the 4 box-type supporting legs 1 is adjusted to ensure that the center of the derrick is consistent with the center of a shaft 3. Two sides of a concrete foundation 2 are provided with 2 culverts 4, each culverts is internally provided with 3 high-pressure double-acting oil cylinders 140, and 6 high-pressure double-acting oil cylinders are shared to synchronously lift 1 box-type supporting leg so as to adjust the posture of the derrick.
As shown in fig. 3, the large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable frequency speed regulation-high speed switch comprises 2 sets of variable frequency speed regulation-high speed switch high-voltage systems 100 and a set of central control system 200, wherein each set of variable frequency speed regulation-high speed switch high-voltage system 100 comprises 6 high-voltage double-acting oil cylinders 140 which jointly lift up a box-shaped supporting leg 1, and the central control system 200 is communicated with the 2 sets of hydraulic systems through a data line to control the synchronous lifting of the 12 high-voltage double-acting oil cylinders 140, thereby realizing the deviation rectifying reset of the large derrick; the central control system 200 is adopted for centralized control, and a plurality of sets of hydraulic systems 100 work in parallel, so that system expansion and networking are facilitated, and synchronous control of different points is met.
As shown in fig. 4, the variable frequency governor-high speed switch high-pressure system 100 includes a variable frequency governor pump station 110 and a plurality of control branches connected in parallel, wherein each control branch includes a control valve group 120, a high-pressure hose 130, a high-pressure double-acting cylinder 140, an absorption displacement sensor 150, and a pressure sensor 160, the control valve group 120 is connected in series between the variable frequency governor pump station 110 and the high-pressure double-acting cylinder 140, the variable frequency governor pump station 110 provides an adjustable system flow for the system to control the synchronous lifting speed, and the control valve group 120 controls the lifting action of the high-pressure double-acting cylinder.
The variable-frequency speed regulation pumping station 110 comprises a variable-frequency driver 111, a variable-frequency speed regulation motor 112, a high-pressure radial plunger pump 113, a safety valve bank 114 and an oil tank 115, wherein the variable-frequency driver 111 is connected with the variable-frequency speed regulation motor 112 through a cable, the variable-frequency speed regulation motor 112 is mechanically connected with the high-pressure radial plunger pump 113, an inlet of the high-pressure radial plunger pump 113 is connected with the oil tank 115, an outlet of the high-pressure radial plunger pump 113 is connected with a control valve bank 120, the variable-frequency driver 111 is used for regulating the rotating speed of the variable-frequency speed regulation motor 112 to control the output flow of the high-pressure radial plunger pump 113, so that the synchronous speed is controlled; the safety valve set 114 is connected in parallel with the outlet of the high-pressure radial plunger pump 113, and comprises an electromagnetic directional valve, a high-pressure overflow valve and a low-pressure overflow valve, and the electromagnetic directional valve is switched to be in different working positions, so that the jacking working condition system and the descending working condition system have different overflow pressures; the variable frequency adjustable speed motor 112 includes, but is not limited to, an ac servo motor and a dc servo motor.
The control valve group 120 comprises a high-speed switch valve 121, a hydraulic control one-way valve 122 and a one-way throttle valve 123, wherein the high-speed switch valve 121 has three-position four-way and Y-shaped middle position functions, a port P is connected with an outlet of the high-pressure radial plunger pump 113, a port A is connected with a small cavity of the high-pressure double-acting oil cylinder 140 and a port K of the hydraulic control one-way valve 122 through a high-pressure hose 130, a port B is sequentially connected with the hydraulic control one-way valve 122 and the one-way throttle valve 123, and the one-way throttle valve 123 is connected with a large cavity of the high-pressure double-acting oil cylinder 140 through the high-pressure hose 130; when the high-speed switch valve 121 is respectively positioned at the left position, the middle position and the right position, the high-pressure double-acting oil cylinder 140 rises, stops and descends; when the high-pressure double-acting cylinder 140 descends, the check throttle valve 123 generates back pressure to control the descending speed, while the pilot-operated check valve 122 intermittently opens and closes to prevent overspeed descent.
As shown in fig. 5, the high-pressure double-acting cylinder 140 is characterized in that: the top end of an extension rod is provided with a deflection head 141, one end of the deflection head 141 is a plane and is contacted with the bottom surface of the box-shaped supporting leg 1, and the other end is a hemisphere and is contacted with the spherical surface of the top end of the extension rod; the deflection head 141 deflects along with the box-type supporting leg 1 during jacking, so that the stress of the high-pressure double-acting oil cylinder 140 is always along the axial direction of the piston rod, and the high-pressure double-acting oil cylinder 140 is prevented from being damaged due to unbalanced load; a hollow measuring plate 142 is arranged between the deflection head 141 and the extension rod, a measuring head of the adsorption type displacement sensor 150 is adsorbed at the extension end of the measuring plate 142, and when the deflection head 141 deflects, the measuring plate 142 can be kept still to ensure the precision of displacement measurement; the oil inlet and outlet of the high-pressure double-acting oil cylinder 140 and the two ends of the high-pressure hose 140 are respectively provided with a quick plug 131 with a one-way conduction function, so that a high-pressure pipeline can be conveniently and quickly connected, and meanwhile, the oil in the high-pressure double-acting oil cylinder 140 and the oil in the high-pressure hose 130 can be prevented from leaking outwards when the pipeline is pulled out;
the adsorption type displacement sensor 150 is adsorbed on the outer wall of the high-pressure double-acting oil cylinder 140, the adsorption position is adjustable, and the adsorption type displacement sensor is used for detecting the displacement of the high-pressure double-acting oil cylinder 140, and the pressure sensor 160 is connected in parallel with the outlet of the high-pressure radial plunger pump 113 and the outlet of the one-way throttle valve 123 and is used for detecting the pressure of the system and the large cavity pressure of the high-pressure double-acting oil cylinder 140.
As shown in fig. 6, the central control system 200 mainly includes a data acquisition unit 210, a controller 220, and an upper computer 230 connected by a data line, wherein the data acquisition unit 210 acquires pressure signals of 12 channels of the system and displacement signals of the high-pressure double-acting oil cylinders 140, and feeds back the pressure signals to the controller 220, after calculation, the controller 220 outputs signals to the two channels of variable frequency drivers 111 to control the rotation speed of the two sets of variable frequency speed control motors 112, thereby adjusting the flow output by the two high-pressure radial plunger pumps 113, and at the same time, the controller 220 sends signals to the 12 channels of high-speed switching valves 121 to control the switching frequency thereof, thereby cooperatively controlling the actions of the 12 high-pressure double-acting oil cylinders 140, and the upper computer 230 is connected and communicated with the controller 220 for monitoring the operating state of the system, setting system parameters, and switching a working model.
Now according to specific embodiment, five places of middlings five have been carried out the experimental verification to this application utility model's large-scale derrick multiple spot synchronous electric hydraulic control system that rectifies based on variable frequency speed governing-high speed switch. The experimental conditions were as follows:
the maximum working pressure of the system is 70MPa, the maximum flow is 4L/min, the jacking load is 150t, the single-pump six-cylinder synchronous jacking is adopted, the jacking height is 20mm, the descending height is 20mm, and the expected maximum synchronous position error is 0.5mm.
Fig. 7 is an experimental result of 6-cylinder synchronous lifting and lowering. The result shows that in the process of jacking and descending, the loads of the 6 double-acting high-thrust oil cylinders are different, the maximum load difference of the two oil cylinders (No. 1 cylinder and No. 6) is 24.8t, but even under the condition of large unbalance loading, the synchronous position error of the 6 double-acting high-pressure double-acting oil cylinders is controlled to be about 0.5mm, especially the synchronous error in the ascending stage is smaller, and the multipoint synchronous electro-hydraulic control system is feasible.
Claims (6)
1. Large-scale derrick multipoint synchronous electrohydraulic control system that rectifies based on variable frequency speed governing-high speed switch, its characterized in that: the system comprises a plurality of sets of variable frequency speed regulation-high speed switch high-voltage systems and a central control system; each high-pressure system comprises a plurality of high-pressure double-acting oil cylinders which jointly lift up supporting legs of the derrick, and the central control system is connected and communicated with the plurality of hydraulic systems through data lines so as to monitor and control synchronous displacement of the plurality of high-pressure double-acting oil cylinders, thereby realizing deviation rectifying and resetting of the large derrick; the central control system is adopted for centralized control, and a plurality of sets of hydraulic systems work in parallel, so that system expansion and networking are facilitated, and synchronous control of different points is met;
the variable frequency speed regulation-high speed switch high-pressure system comprises a variable frequency speed regulation pump station and a plurality of control branches connected in parallel, wherein each control branch comprises a control valve group, a high-pressure hose, a high-pressure double-acting oil cylinder, an adsorption type displacement sensor and a pressure sensor, the control valve groups are connected in series between the variable frequency speed regulation pump station and the high-pressure double-acting oil cylinder and used for controlling ascending and descending actions of the high-pressure double-acting oil cylinder, and the variable frequency speed regulation pump station provides adjustable system flow for the system so as to control synchronous ascending and descending speed.
2. The large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable-frequency speed regulation-high-speed switch as claimed in claim 1, wherein: the variable-frequency speed regulation pump station comprises a variable-frequency driver, a variable-frequency speed regulation motor, a high-pressure radial plunger pump, a safety valve bank and an oil tank, wherein the variable-frequency driver is connected with the variable-frequency speed regulation motor through a cable, the variable-frequency speed regulation motor is mechanically connected with the high-pressure radial plunger pump, the inlet of the high-pressure radial plunger pump is connected with the oil tank, the outlet of the high-pressure radial plunger pump is connected with the control valve bank, the variable-frequency driver is used for regulating the rotating speed of the motor and controlling the flow rate of the high-pressure radial plunger pump, so that the synchronous speed is controlled; the safety valve group is connected in parallel with the outlet of the high-pressure radial plunger pump, so that the system has different overflow pressures when the oil cylinder is lifted up and lowered down.
3. The large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable-frequency speed regulation-high-speed switch as claimed in claim 1, wherein: the control valve group comprises a high-speed switch valve, a hydraulic control one-way valve and a one-way throttle valve, wherein the high-speed switch valve has three-position four-way and Y-shaped middle position functions, a port P of the high-speed switch valve is connected with an outlet of a high-pressure radial plunger pump, a port A is connected with a small cavity of a high-pressure double-acting oil cylinder and a port K of the hydraulic control one-way valve through a high-pressure hose, a port B is sequentially connected with the hydraulic control one-way valve and the one-way throttle valve, and the one-way throttle valve is connected with a large cavity of the high-pressure double-acting oil cylinder through the high-pressure hose; the ascending and descending of the high-pressure double-acting oil cylinder are controlled by switching the high-speed switch valve to be in different working positions; when the high-pressure double-acting cylinder descends, the one-way throttle valve generates back pressure to control the descending speed, and meanwhile, the hydraulic control one-way valve is intermittently opened and closed to prevent overspeed descending.
4. The large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable-frequency speed regulation-high-speed switch as claimed in claim 1, wherein: the top end of the extension rod of the high-pressure double-acting oil cylinder is provided with a deflection head, one end of the deflection head is a plane and is contacted with the bottom surface of the box-shaped supporting leg, and the other end of the deflection head is hemispherical and is contacted with the spherical surface at the top end of the extension rod; when jacking, the deflection head deflects along with the box-type supporting leg, so that the stress of the high-pressure double-acting oil cylinder is always along the axis direction of the piston rod, and the high-pressure double-acting oil cylinder is prevented from being damaged due to unbalanced load; a hollow measuring plate is arranged between the deflection head and the extension rod, a measuring head of the adsorption type displacement sensor is adsorbed at the extension end of the measuring plate, and the measuring plate can be kept still when the deflection head deflects so as to ensure the precision of displacement measurement; the oil inlet and outlet of the high-pressure double-acting oil cylinder and the two ends of the high-pressure hose are respectively provided with a quick plug with a one-way conduction function, so that the pipeline can be conveniently and quickly connected, and the oil in the high-pressure double-acting oil cylinder and the oil in the high-pressure hose can be prevented from leaking outwards when the pipeline is pulled out.
5. The large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable frequency speed regulation-high speed switch as claimed in claim 1, wherein: the adsorption type displacement sensor is adsorbed on the outer wall of the high-pressure double-acting oil cylinder, the adsorption position is adjustable, and the adsorption type displacement sensor is used for detecting the displacement of the high-pressure double-acting oil cylinder, and the pressure sensor is connected in parallel with the outlet of the high-pressure radial plunger pump and the outlet of the one-way throttle valve and used for detecting the pressure of a system and the large cavity pressure of the high-pressure double-acting oil cylinder.
6. The large derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on the variable-frequency speed regulation-high-speed switch as claimed in claim 1, wherein: the central control system mainly comprises a data acquisition unit, a controller and an upper computer which are connected through a data line; the data acquisition unit acquires pressure signals and displacement signals of the high-pressure double-acting oil cylinders at all positions of the system and feeds the pressure signals and the displacement signals back to the controller, the controller outputs signals to the variable-frequency driver after operation so as to control the rotating speed of the variable-frequency speed regulating motor and adjust the flow output by the high-pressure radial plunger pump, meanwhile, the controller sends signals to the high-speed switch valve to control the switching frequency of the high-speed switch valve, so that the actions of the high-pressure double-acting oil cylinders are cooperatively controlled, and the upper computer is communicated with the controller and used for monitoring the running state of the system, setting system parameters and switching a working model.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222817117.1U CN218377112U (en) | 2022-10-25 | 2022-10-25 | Large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222817117.1U CN218377112U (en) | 2022-10-25 | 2022-10-25 | Large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch |
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