CN105257614A - Hydraulic oil cylinder high-precision synchronous control complete device of ultralarge heavy equipment - Google Patents
Hydraulic oil cylinder high-precision synchronous control complete device of ultralarge heavy equipment Download PDFInfo
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- CN105257614A CN105257614A CN201510833551.0A CN201510833551A CN105257614A CN 105257614 A CN105257614 A CN 105257614A CN 201510833551 A CN201510833551 A CN 201510833551A CN 105257614 A CN105257614 A CN 105257614A
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Abstract
The invention discloses a hydraulic oil cylinder high-precision synchronous control complete device of ultralarge heavy equipment. The device consists of a mechanical device, a hydraulic system and an electric control system, wherein the mechanical device comprises four jacking oil cylinders, four support oil cylinders and four bolt oil cylinders; and the hydraulic system comprises an oil tank, four jacking and support hydraulic subsystems and a bolt hydraulic subsystem. The device has the advantage of smoothly hoisting the ultralarge heavy equipment from the ground to a platform surface.
Description
Technical field
The present invention relates to a kind of hydraulic equipment, the hydraulic jack high-precise synchronization particularly relating to a kind of super large jumbo is controlled to covering device.
Background technique
In impeller dynamic test, one of them important test event is placed in super sized type water tank by guide plate to test.This superhuge water tank, wide 3 meters, long 6 meters, weigh 132 tons when storing full water.In test process, water tank can require to fall after rise to ground in the flat surface from surface uplift to 3.2m and from flat surface, and be very difficult thing on water tank large and heavy for this span is from surface uplift to plane, and require in the process promoted, water tank has not allowed skew, otherwise water tank will be blocked by track, cannot lifting be continued, even can cause the damage of water tank.
Afterwards, someone expected utilizing screw body to promote the lifting of this super large jumbo.Although utilize screw body to carry out lifting have the high advantage of precision, super large jumbo can be avoided not offset in lifting process, but the power that screw body can provide is limited, the power needed for lifting super large jumbo can not be reached, therefore, finally utilize screw body to carry out this super large jumbo of lifting still cannot realize.
Summary of the invention
For solving the problems of the technologies described above, the hydraulic jack high-precise synchronization that the invention provides a kind of super large jumbo is controlled to covering device, promotes super large jumbo by the mode of hydraulic pressure, to overcome the deficiency that prior art exists.
For solving the problems of the technologies described above, the present invention adopts following technological scheme:
The hydraulic jack high-precise synchronization of super large jumbo is controlled to a covering device, is made up of mechanical device, hydraulic system and automatical control system;
Described mechanical device comprises four jacking cylinders, four support cylinders and four plugging pin oil cylinder;
Described hydraulic system comprises fuel tank, four jackings and support hydraulic pressure subtense angle and a latch hydraulic subsystem;
Often organize in jacking and support hydraulic pressure subtense angle and include the duplex pump, two-bit triplet solenoid valve, proportional pressure control valve, the first solenoid directional control valve, the second solenoid directional control valve, the first stop valve, the second stop valve, the 3rd stop valve, the first equilibrium valve, the second equilibrium valve, the 3rd equilibrium valve, the 4th equilibrium valve that are driven by speed-adjustable motor, accumulator;
The filler opening of described duplex pump is connected to described fuel tank through the first ball valve, and the oil outlet of the main oil pump of described duplex pump is connected to the first hydraulic fluid port of described two-bit triplet solenoid valve, and the second hydraulic fluid port of described two-bit triplet solenoid valve connects the filler opening of the first one-way valve;
The oil outlet of the auxiliary oil pump of described duplex pump is directly connected to the filler opening of described first one-way valve, and the oil outlet of described first one-way valve is connected respectively to the filler opening of described proportional pressure control valve, the first hydraulic fluid port of described first solenoid directional control valve, the first hydraulic fluid port of described second solenoid directional control valve;
Second hydraulic fluid port of described first solenoid directional control valve is connected to the reverse hydraulic fluid port of jacking cylinder through described first equilibrium valve, the 3rd hydraulic fluid port of described first solenoid directional control valve is connected to the forward hydraulic fluid port of described jacking cylinder through described second equilibrium valve; Described first equilibrium valve is also connected to the filler opening of described first stop valve; Described second equilibrium valve is also connected to the filler opening of described second stop valve;
Second hydraulic fluid port of described second solenoid directional control valve is connected to the reverse hydraulic fluid port of support cylinder through described 3rd equilibrium valve, the 3rd hydraulic fluid port of described second solenoid directional control valve is connected to the forward hydraulic fluid port of support cylinder through described 4th equilibrium valve; Described 4th equilibrium valve is also connected to accumulator by described 3rd stop valve;
3rd hydraulic fluid port, the oil outlet of described proportional pressure control valve, the 4th hydraulic fluid port of described first solenoid directional control valve, the 4th hydraulic fluid port of described second solenoid directional control valve, the oil outlet of described first stop valve of the described two-bit triplet solenoid valve in four described jackings and support hydraulic pressure subtense angle, the oil outlet of described second stop valve all connects back described fuel tank by return line;
Described latch hydraulic subsystem comprises by motor-driven gear pump, the 3rd solenoid directional control valve, inserts formula relief valve, hydraulic lock, the first unidirectional adjustable restrictive valve, the second unidirectional adjustable restrictive valve;
The filler opening of described gear pump is connected to described fuel tank through the second ball valve, the oil outlet of described gear pump is connected to the first hydraulic fluid port of described 3rd solenoid directional control valve and the filler opening of described slotting formula relief valve through the second one-way valve, second hydraulic fluid port of described 3rd solenoid directional control valve is through one of them one-way valve of described hydraulic lock, described first unidirectional adjustable restrictive valve is connected to the reverse hydraulic fluid port of four plugging pin oil cylinder, 3rd hydraulic fluid port of described 3rd solenoid directional control valve is through another one-way valve of described hydraulic lock, described second unidirectional adjustable restrictive valve is connected to the forward hydraulic fluid port of four described plugging pin oil cylinder,
4th hydraulic fluid port of described 3rd solenoid directional control valve is connected back described fuel tank with the oil outlet of slotting formula relief valve by return line.
In the present invention, four described jacking cylinders are fixed in the foundation ditch below super large jumbo, and the both sides outer wall of super large jumbo connects the external part of described jacking cylinder all around symmetrically close to tip position; Four described plugging pin oil cylinder are fixedly mounted on four angles place bottom super large jumbo respectively, and external part all toward the outer side; The position distribution of four support cylinders then corresponding four described plugging pin oil cylinder is in flat surface; The external part of described plugging pin oil cylinder stretches out and just can be supported by described support cylinder jack-up afterwards.
In the present invention, the oil outlet of described first one-way valve is connected with the first charge oil pressure sensor; Described jacking cylinder has jacking cylinder displacement transducer; The oil outlet of described first equilibrium valve and the oil outlet of the second equilibrium valve are connected to jacking first pressure transducer and jacking second pressure transducer; Described support cylinder have support cylinder displacement transducer and support cylinder gravity sensor; The oil outlet of described 3rd equilibrium valve and the oil outlet of described 4th equilibrium valve are connected to support first pressure transducer and support the second pressure transducer; The oil outlet of described second one-way valve is connected with fuel feeding second pressure transducer.
In the present invention, described automatical control system includes master controller and motor control panel, described master controller is connected with motor control panel, and motor control panel is connected with the speed-adjustable motor of four in hydraulic system respectively by four servo amplification circuits, described first charge oil pressure sensor in four jackings and support hydraulic pressure subtense angle, described proportional pressure control valve, described two-bit triplet solenoid valve, described jacking cylinder displacement transducer, described jacking first pressure transducer, described jacking second pressure transducer, described support cylinder displacement transducer, described support cylinder gravity sensor, described support first pressure transducer, described support second pressure transducer, described first solenoid directional control valve, described second solenoid directional control valve, described first stop valve, described second stop valve, described 3rd stop valve all connects master controller, described second charge oil pressure sensor in described latch hydraulic subsystem, described 3rd solenoid directional control valve, described slotting formula relief valve all connect master controller.
In the present invention, described return line is connected to cooler and filter in the location strings close to fuel tank; Described fuel tank has level meter, liquid level relay, air filter and temperature transducer; The 4th stop valve is also connected with between the oil outlet of described second ball valve and the return line entering before described cooler; Described liquid level sensor, described temperature transducer, described cooler are also connected master controller with described 4th stop valve; Described master controller is attended operation interface and man-machine interface also.
In the present invention, described fuel tank, described motor-driven gear pump, described cooler, the duplex pump of four described speed-adjustable motor drivings, described filter constitute hydraulic station; Described hydraulic station is arranged on two layers of steelframe, wherein said fuel tank is arranged on the top layer of described steelframe, the duplex pump of described motor-driven gear pump, described cooler, four described speed-adjustable motor drivings is disposed side by side on the bottom of described steelframe, and described filter is arranged on the top of described fuel tank; Described gear pump, four described duplex pumps are communicated to the bottom of described fuel tank by oil pipe; Described cooler is communicated to described filter by oil pipe.
In addition, described fuel tank internal is provided with level meter, and multiple pressure gauge is arranged on the base side of described fuel tank; The sidewall of described fuel tank is provided with maintenance window.
Adopt technique scheme, the present invention has the advantage reposefully super large jumbo being lifted to reposefully flat surface from ground.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail:
Fig. 1 is mechanical device structure schematic diagram of the present invention;
Fig. 2 is hydraulic schematic of the present invention;
Fig. 3 is hydraulic station structure schematic diagram of the present invention;
Fig. 4 is A-A direction view in Fig. 3;
Fig. 5 is automatical control system schematic diagram of the present invention.
Embodiment
The hydraulic jack high-precise synchronization of super large jumbo of the present invention is controlled to covering device, is made up of mechanical device, hydraulic system and automatical control system.Super large jumbo of the present invention is for the heavy water tank of the super large mentioned by background technique.
As shown in Figure 1, described mechanical device comprises four jacking cylinders, 20, four support cylinders 21 and four plugging pin oil cylinder 22.
Wherein, four jacking cylinders 20 are fixed in the foundation ditch 01 below water tank 1100.The both sides outer wall of water tank 1100 is distributed with four sidewall engaging lugs 1101 all around symmetrically close to tip position, and jacking cylinder 20 is positioned at the below of sidewall engaging lug 1101.The external part of jacking cylinder 20 is connected on sidewall engaging lug 1101.
Four plugging pin oil cylinder 22 are fixedly mounted on four angles place bottom water tank 1100 respectively, and all toward the outer side, fixed end is also connected to by strut 1102 on the bottom engaging lug 1103 of the centre of water tank bottom external part.Such structure makes plugging pin oil cylinder 22 firmly be fixed on four angles bottom water tank 10.
The position distribution of four support cylinders, 21 correspondences, four plugging pin oil cylinder 22 is in flat surface 02.The external part of plugging pin oil cylinder 22 stretches out and just can be supported by support cylinder 21 jack-up afterwards.
The working method of this jacking mechanical device is:
Water tank jacking process: four jacking cylinders 20 by water tank 1100 from ground 03 jacking to flat surface 02, then four plugging pin oil cylinder 22 are protruding respectively, then, the support cylinder 21 be positioned at below plugging pin oil cylinder 22 rises, until support plugging pin oil cylinder 22, then water tank 1100 is upwards continued the little segment distance of jacking (about 40mm) by support cylinder 21 again, and finally supports water tank 1100, makes water tank 1100 be seated in the position of flat surface more than 02.
Water tank descent: jacking cylinder 20 is by slightly upward for water tank 1100 jacking (approximately upwards jacking 2-3mm), plugging pin oil cylinder 22 is made upwards to depart from support cylinder 21, then plugging pin oil cylinder 22 is retracted, subsequently jacking cylinder 20 is shortened, water tank is slowly declined until fall after rise to ground 03.
As shown in Figure 2, hydraulic system, comprises fuel tank 1, four jackings and support hydraulic pressure subtense angle 201,202,203,204 and latch hydraulic subsystem 300.
Often organize in jacking and support hydraulic pressure subtense angle and include the duplex pump 8, two-bit triplet solenoid valve 32, proportional pressure control valve 12, first solenoid directional control valve 161, second solenoid directional control valve 162, first stop valve 311, second stop valve 312, the 3rd stop valve 313, first equilibrium valve 291, second equilibrium valve 292, the 3rd equilibrium valve 293, the 4th equilibrium valve 294 that are driven by speed-adjustable motor 7, accumulator 26.
Wherein, the filler opening of duplex pump 8 is connected to fuel tank 1 through the first ball valve 151, and the oil outlet of the main oil pump of duplex pump 8 is connected to the first hydraulic fluid port of two-bit triplet solenoid valve 32, and the second hydraulic fluid port of two-bit triplet solenoid valve 32 connects the filler opening of the first one-way valve 111.
The oil outlet of the auxiliary oil pump of duplex pump 8 is directly connected to the filler opening of the first one-way valve 111, and the oil outlet of the first one-way valve 111 is connected respectively to the filler opening of proportional pressure control valve 12, the first hydraulic fluid port of the first solenoid directional control valve 161, the first hydraulic fluid port of the second solenoid directional control valve 162.
The oil outlet of the first one-way valve 111 is also connected with the first charge oil pressure sensor 141 and pressure gauge 17.
Second hydraulic fluid port of the first solenoid directional control valve 161 is connected to the reverse hydraulic fluid port of jacking cylinder through the first equilibrium valve 291, the 3rd hydraulic fluid port of the first solenoid directional control valve 161 is connected to the forward hydraulic fluid port of jacking cylinder through the second equilibrium valve 292.First equilibrium valve 291 is also connected to the filler opening of the first stop valve 311.Second equilibrium valve 292 is also connected to the filler opening of the second stop valve 312.Jacking cylinder 20 has jacking displacement transducer 301.The oil outlet of the first equilibrium valve 291 and the oil outlet of the second equilibrium valve 292 are also connected to jacking first pressure transducer 142 and jacking second pressure transducer 143.
Second hydraulic fluid port of the second solenoid directional control valve 162 is connected to the reverse hydraulic fluid port of support cylinder 21 through the 3rd equilibrium valve 293, the 3rd hydraulic fluid port of the second solenoid directional control valve 162 is connected to the forward hydraulic fluid port of support cylinder 21 through the 4th equilibrium valve 294.4th equilibrium valve 294 is also connected to accumulator 26 by the 3rd stop valve 313.Support cylinder 21 have bracing displacement sensor 302 and gravity sensor 303.The oil outlet of the 3rd equilibrium valve 293 and the oil outlet of the 4th equilibrium valve are also connected to support first pressure transducer 144 and support the second pressure transducer 145.
3rd hydraulic fluid port, the oil outlet of proportional pressure control valve 12, the 4th hydraulic fluid port of the first solenoid directional control valve 161, the 4th hydraulic fluid port of the second solenoid directional control valve 162, the oil outlet of the first stop valve 311 of the two-bit triplet solenoid valve 32 in four jackings and support hydraulic pressure subtense angle 201,202,203,204, the oil outlet of the second stop valve 312 all connects oil sump tank 1 by return line.
In the present invention, the solenoid valve of duplex pump 8 must not be electric, only main oil pump work; Solenoid valve obtains electric, and main oil pump and auxiliary oil pump work simultaneously.
The working method of jacking and support hydraulic pressure subtense angle is: speed-adjustable motor 7 drives duplex pump 8 to work, when the first hydraulic fluid port of two-bit triplet solenoid valve 31 is communicated with the second hydraulic fluid port, the main oil pump of duplex pump 8 and auxiliary oil pump pass through the first one-way valve 111 to jacking and support hydraulic pressure subtense angle fuel feeding simultaneously, when the first hydraulic fluid port and the cut-off of the second hydraulic fluid port of two-bit triplet solenoid valve 31, when first hydraulic fluid port is communicated with the 3rd hydraulic fluid port, only the auxiliary oil pump of duplex pump 8 passes through the first one-way valve 111 to jacking and support hydraulic pressure subtense angle fuel feeding, the main oil pump of duplex pump 8 then flows back to fuel tank 1 through the first hydraulic fluid port of two-bit triplet solenoid valve 31 and the 3rd hydraulic fluid port.
Proportional pressure control valve 12 is for realizing changing the pressure of the hydraulic oil entering jacking and support hydraulic pressure subtense angle.
When the first solenoid directional control valve 161 is when connecting, for driving jacking cylinder 20 to work, at this moment the second electromagnetic switch solenoid valve 162 ends, and support cylinder 21 does not work.When the second electromagnetic switch solenoid valve 162 is when connecting, for driving support cylinder 21 to work, at this moment the first solenoid directional control valve 161 ends, and jacking cylinder 20 does not work.
First solenoid directional control valve 161 has two kinds of getting types: when the first hydraulic fluid port of the first solenoid directional control valve 161 is communicated with the second hydraulic fluid port, when 3rd hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the reverse hydraulic fluid port of jacking cylinder 20, drives jacking cylinder 20 to shorten, for the water tank 1100 that lands.When the first hydraulic fluid port of the first solenoid directional control valve 161 is communicated with the 3rd hydraulic fluid port, when the second hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the forward hydraulic fluid port of jacking cylinder 20, drives jacking cylinder 20 to extend, for by water tank jack-up.
Second solenoid directional control valve 162 also has two kinds of getting types: when the first hydraulic fluid port of the first solenoid directional control valve 162 is communicated with the second hydraulic fluid port, when 3rd hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the reverse hydraulic fluid port of support cylinder 21, drives support cylinder 21 to shorten, for being separated with water tank.When the first hydraulic fluid port of the first solenoid directional control valve 162 is communicated with the 3rd hydraulic fluid port, when the second hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the forward hydraulic fluid port of support cylinder 21, drives support cylinder 21 to extend, for supporting water tank.
3rd stop valve 313 is in cut-off state usually, after support cylinder 21 supports water tank, the 3rd stop valve 313 is opened connection, makes to utilize accumulator 26 pairs of support cylinders 21 to carry out pressurize.
First stop valve 311 and the second stop valve 312 are also in cut-off state usually, when support cylinder 21 carries out work, because jacking cylinder 20 also will do accompany movement, at this moment because the first solenoid directional control valve 161 is in cut-off state, emptying phenomenon is there is for avoiding jacking cylinder 20, need to open the first stop valve 311 and the second stop valve 312 for this reason, jacking cylinder 20 is communicated with fuel tank 1, avoids emptying phenomenon.
Latch hydraulic subsystem 300 comprise driven by motor 9 gear pump 10, the 3rd solenoid directional control valve 163, insert formula relief valve 13, the unidirectional adjustable restrictive valve 272 of hydraulic lock the 19, first unidirectional adjustable restrictive valve 271, second.Hydraulic lock 19 is made up of two one-way valves, the forward hydraulic fluid port mutual induction of two one-way valves in hydraulic lock 19, as long as the forward hydraulic fluid port of one of them one-way valve has pressure to be opened, the forward hydraulic fluid port of another one one-way valve also can be opened by the pressure responded to simultaneously, and namely hydraulic lock 19 has two one-way valves and opens the function of simultaneously closing simultaneously.
The filler opening of gear pump 10 is connected to fuel tank 1 through the second ball valve 152, the oil outlet of gear pump 10 is connected to the first hydraulic fluid port of the 3rd solenoid directional control valve 163 and the filler opening of slotting formula relief valve 13 through the second one-way valve 112, second hydraulic fluid port of the 3rd solenoid directional control valve 163 is connected to the reverse hydraulic fluid port of four plugging pin oil cylinder 22 through one of them one-way valve of hydraulic lock 19, the first unidirectional adjustable restrictive valve 271, and the 3rd hydraulic fluid port of the 3rd solenoid directional control valve 163 is connected to the forward hydraulic fluid port of four plugging pin oil cylinder 22 through another one-way valve of hydraulic lock 19, the second unidirectional adjustable restrictive valve 272.
4th hydraulic fluid port of the 3rd solenoid directional control valve 163 is connected oil sump tank 1 with the oil outlet of slotting formula relief valve 13 by return line.
The oil outlet of the first unidirectional adjustable restrictive valve 271 and the oil outlet of the second unidirectional adjustable restrictive valve 272 are also connected with pressure gauge 17.The oil outlet of the second one-way valve 112 is also connected with fuel feeding second pressure transducer 146 and pressure gauge 17.
The working method of this latch hydraulic subsystem 300 is: gear pump 10 to latch hydraulic subsystem 300 fuel feeding, inserts formula relief valve 13 for setting the oil pressure entering latch hydraulic subsystem 300 under motor 9 drives.
3rd solenoid directional control valve 163 also has two kinds of getting types: when the first hydraulic fluid port of the 3rd solenoid directional control valve 163 is communicated with the second hydraulic fluid port, when 3rd hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the reverse hydraulic fluid port of four plugging pin oil cylinder 22, drives plugging pin oil cylinder 22 to retract to be separated with support cylinder 21.When the first hydraulic fluid port of the 3rd solenoid directional control valve 163 is communicated with the 3rd hydraulic fluid port, when the second hydraulic fluid port is communicated with the 4th hydraulic fluid port, hydraulic oil then enters from the forward hydraulic fluid port of four plugging pin oil cylinder 22, drives plugging pin oil cylinder 22 to extend can be seated on support cylinder 21.
And when the 3rd solenoid valve selector valve 163 ends, two one-way valves all can end in hydraulic lock 19, thus the hydraulic oil of plugging pin oil cylinder 22 piston both sides can not be flowed, thus make plugging pin oil cylinder 22 hold mode.
Return line is connected to cooler 23 and filter 24 close to the location strings of fuel tank 1.
Fuel tank 1 has level meter 3, liquid level relay 4, air filter 5 and temperature transducer 6.
In addition, the 4th stop valve 314 is also connected with between the oil outlet of the second ball valve 152 and the return line entering before cooler 23.4th stop valve 314 ends usually, synchronously opens, jacking cylinder 20 is communicated with fuel tank 1 when the first stop valve 311, second stop valve 312 is opened, and avoids occurring above-mentioned emptying phenomenon.
As shown in Figure 3 and Figure 4, fuel tank 1, the gear pump 10 of motor 9 driving, cooler 23,4 duplex pumps driven by speed-adjustable motor 78, filters 24 constitute hydraulic station 400.
This hydraulic station 400 is arranged on two layers of steelframe 401, wherein fuel tank 1 is arranged on the top layer 402 of steelframe 401, the gear pump 10 driven by motor 9, cooler 23,4 duplex pumps driven by speed-adjustable motor 78 are disposed side by side on the bottom 411 of steelframe 401, and filter 24 is arranged on the top of fuel tank 1.Gear pump 10,4 duplex pumps 8 are communicated to the bottom of fuel tank 1 by oil pipe.Cooler 23 is also communicated to filter 24 by oil pipe.Cooler 23 is forced air cooler.
Fuel tank 1 inside is provided with level meter 3, and 17, multiple pressure gauge is arranged on the base side of fuel tank 1.
The top of fuel tank 1 is provided with pouring orifice 403 and the air filter 5 of plunger shutoff.The sidewall of fuel tank 1 is provided with maintenance window 404.Have by the fuel outlet 405 of plunger shutoff bottom an end wall in fuel tank 1.
Adopt said structure, fuel tank 1 is arranged on the top of gear pump 20,4 duplex pumps 8, even if gear pump 10, duplex pump 8 do not work like this, fuel tank also can give the pressure that system is certain, can meet the partial pressure demand of system, have the effect of energy-saving and emission-reduction.
In addition, terminal box 406 is also provided with in the tip position of the bottom of steelframe 402.
For convenience of lifting, the two ends of steelframe 401 have lifting earhole 407.
As shown in Figure 5, in automatical control system, core component has master controller and motor control panel.Master controller is connected with motor control panel, and motor control panel is also connected with the speed-adjustable motor of 4 in hydraulic system respectively by 4 servo amplification circuits, controls the rotating speed of each speed-adjustable motor for realizing, and and then controls each duplex pump work.
The first charge oil pressure sensor in four jackings and support hydraulic pressure subtense angle, proportional pressure control valve, two-bit triplet solenoid valve, jacking cylinder absolute displacement transducer, jacking first pressure transducer, jacking second pressure transducer, support cylinder mimotope displacement sensor, support cylinder gravity sensor, support the first pressure transducer, support the second pressure transducer, first solenoid directional control valve, second solenoid directional control valve, first stop valve, second stop valve, 3rd stop valve all connects master controller.
The second charge oil pressure sensor in latch hydraulic subsystem, the 3rd solenoid directional control valve, slotting formula relief valve all connect main control.
Liquid level sensor, temperature transducer, cooler, the 4th stop valve also connect master controller.
Operation interface is connected with master controller with man-machine interface.
In the automatic control of invention, the method for flow control and pressure compensation is adopted to realize synchronization control.In order to reduce error, system adopts band to carry Starting mode.The displacement of all oil cylinders of master controller Real-time Obtaining, pressure, gravity, temperature data, and set each displacement of the subtense angle of one of them jacking and support hydraulic pressure, pressure, gravimetric data (arranging according to real work demand) be Reference data, and differential is carried out, segment movement to the whole travel displacement of each oil cylinder.Segmented compensation (guaranteeing stable movement).And each displacement in other jacking and support hydraulic pressure subtense angle, pressure, gravimetric data are compared in real time with Reference data, and according to showing that difference carries out analyzing and stepping, then the positive and negative offset in each interval is calculated (just for accelerating by shelves, bear as slowing down or stopping), respectively to the motor speed-regulating in other jacking and support hydraulic pressure subtense angle and proportional pressure control valve pressure regulation, each jacking cylinder or support cylinder is made to remain synchronous.When group oil cylinder error is greater than EE Error Excepted intermediate value in addition, seed oil cylinder adopts main pump fuel feeding auxiliary pump surging repairing mode, and seed oil cylinder is caught up with fast; When master cylinder lags behind seed oil cylinder.Master cylinder adopts main pump fuel feeding auxiliary pump surging repairing mode, and master cylinder is caught up with fast.Owing to being closed loop followup system, can not oil temperature be subject to, gravity, the impact of oil cylinder and pump volumetric efficiency.
Can be operated system by operation interface and man-machine interface, data monitoring, parameter adjustment (according to authority, adjustment different parameters), information is pointed out, and text is reported to the police, failure reset.Carry out operation to the speed-adjustable motor in system, motor and each valve to control.
The all analog amount digital quantity of native system is all by Internet Transmission, and transmission speed is exceedingly fast, and antijamming capability is extremely strong, system stability.
Can be found out by foregoing detailed description, the present invention has the advantage reposefully super large jumbo being lifted to reposefully flat surface from ground.
Claims (10)
1. the hydraulic jack high-precise synchronization of super large jumbo is controlled to a covering device, it is characterized in that: be made up of mechanical device, hydraulic system and automatical control system;
Described mechanical device comprises four jacking cylinders, four support cylinders and four plugging pin oil cylinder;
Described hydraulic system comprises fuel tank, four jackings and support hydraulic pressure subtense angle and a latch hydraulic subsystem;
Often organize in jacking and support hydraulic pressure subtense angle and include the duplex pump, two-bit triplet solenoid valve, proportional pressure control valve, the first solenoid directional control valve, the second solenoid directional control valve, the first stop valve, the second stop valve, the 3rd stop valve, the first equilibrium valve, the second equilibrium valve, the 3rd equilibrium valve, the 4th equilibrium valve that are driven by speed-adjustable motor, accumulator;
The filler opening of described duplex pump is connected to described fuel tank through the first ball valve, and the oil outlet of the main oil pump of described duplex pump is connected to the first hydraulic fluid port of described two-bit triplet solenoid valve, and the second hydraulic fluid port of described two-bit triplet solenoid valve connects the filler opening of the first one-way valve;
The oil outlet of the auxiliary oil pump of described duplex pump is directly connected to the filler opening of described first one-way valve, and the oil outlet of described first one-way valve is connected respectively to the filler opening of described proportional pressure control valve, the first hydraulic fluid port of described first solenoid directional control valve, the first hydraulic fluid port of described second solenoid directional control valve;
Second hydraulic fluid port of described first solenoid directional control valve is connected to the reverse hydraulic fluid port of jacking cylinder through described first equilibrium valve, the 3rd hydraulic fluid port of described first solenoid directional control valve is connected to the forward hydraulic fluid port of described jacking cylinder through described second equilibrium valve; Described first equilibrium valve is also connected to the filler opening of described first stop valve; Described second equilibrium valve is also connected to the filler opening of described second stop valve;
Second hydraulic fluid port of described second solenoid directional control valve is connected to the reverse hydraulic fluid port of support cylinder through described 3rd equilibrium valve, the 3rd hydraulic fluid port of described second solenoid directional control valve is connected to the forward hydraulic fluid port of support cylinder through described 4th equilibrium valve; Described 4th equilibrium valve is also connected to accumulator by described 3rd stop valve;
3rd hydraulic fluid port, the oil outlet of described proportional pressure control valve, the 4th hydraulic fluid port of described first solenoid directional control valve, the 4th hydraulic fluid port of described second solenoid directional control valve, the oil outlet of described first stop valve of the described two-bit triplet solenoid valve in four described jackings and support hydraulic pressure subtense angle, the oil outlet of described second stop valve all connects back described fuel tank by return line;
Described latch hydraulic subsystem comprises by motor-driven gear pump, the 3rd solenoid directional control valve, inserts formula relief valve, hydraulic lock, the first unidirectional adjustable restrictive valve, the second unidirectional adjustable restrictive valve;
The filler opening of described gear pump is connected to described fuel tank through the second ball valve, the oil outlet of described gear pump is connected to the first hydraulic fluid port of described 3rd solenoid directional control valve and the filler opening of described slotting formula relief valve through the second one-way valve, second hydraulic fluid port of described 3rd solenoid directional control valve is through one of them one-way valve of described hydraulic lock, described first unidirectional adjustable restrictive valve is connected to the reverse hydraulic fluid port of four plugging pin oil cylinder, 3rd hydraulic fluid port of described 3rd solenoid directional control valve is through another one-way valve of described hydraulic lock, described second unidirectional adjustable restrictive valve is connected to the forward hydraulic fluid port of four described plugging pin oil cylinder,
4th hydraulic fluid port of described 3rd solenoid directional control valve is connected back described fuel tank with the oil outlet of slotting formula relief valve by return line.
2. the hydraulic jack high-precise synchronization of super large jumbo according to claim 1 is controlled to covering device, it is characterized in that:
Four described jacking cylinders are fixed in the foundation ditch below super large jumbo, and the both sides outer wall of super large jumbo connects the external part of described jacking cylinder all around symmetrically close to tip position;
Four described plugging pin oil cylinder are fixedly mounted on four angles place bottom super large jumbo respectively, and external part all toward the outer side;
The position distribution of four support cylinders then corresponding four described plugging pin oil cylinder is in flat surface; The external part of described plugging pin oil cylinder stretches out and just can be supported by described support cylinder jack-up afterwards.
3. the hydraulic jack high-precise synchronization of super large jumbo according to claim 2 is controlled to covering device, it is characterized in that:
The oil outlet of described first one-way valve is connected with the first charge oil pressure sensor;
Described jacking cylinder has jacking cylinder displacement transducer; The oil outlet of described first equilibrium valve and the oil outlet of the second equilibrium valve are connected to jacking first pressure transducer and jacking second pressure transducer;
Described support cylinder have support cylinder displacement transducer and support cylinder gravity sensor; The oil outlet of described 3rd equilibrium valve and the oil outlet of described 4th equilibrium valve are connected to support first pressure transducer and support the second pressure transducer;
The oil outlet of described second one-way valve is connected with fuel feeding second pressure transducer.
4. the hydraulic jack high-precise synchronization of super large jumbo according to claim 3 is controlled to covering device, it is characterized in that:
Described automatical control system includes master controller and motor control panel; Described master controller is connected with motor control panel, and motor control panel is connected with the speed-adjustable motor of four in hydraulic system respectively by four servo amplification circuits;
Described first charge oil pressure sensor in four jackings and support hydraulic pressure subtense angle, described proportional pressure control valve, described two-bit triplet solenoid valve, described jacking cylinder displacement transducer, described jacking first pressure transducer, described jacking second pressure transducer, described support cylinder displacement transducer, described support cylinder gravity sensor, described support first pressure transducer, described support second pressure transducer, described first solenoid directional control valve, described second solenoid directional control valve, described first stop valve, described second stop valve, described 3rd stop valve all connects master controller.
5. the hydraulic jack high-precise synchronization of super large jumbo according to claim 4 is controlled to covering device, it is characterized in that: the described second charge oil pressure sensor in described latch hydraulic subsystem, described 3rd solenoid directional control valve, described slotting formula relief valve all connect master controller.
6. the hydraulic jack high-precise synchronization of super large jumbo according to claim 5 is controlled to covering device, it is characterized in that:
Described return line is connected to cooler and filter in the location strings close to fuel tank; Described fuel tank has level meter, liquid level relay, air filter and temperature transducer.
7. the hydraulic jack high-precise synchronization of super large jumbo according to claim 6 is controlled to covering device, it is characterized in that:
The 4th stop valve is also connected with between the oil outlet of described second ball valve and the return line entering before described cooler.
8. the hydraulic jack high-precise synchronization of super large jumbo according to claim 6 is controlled to covering device, it is characterized in that:
Described liquid level sensor, described temperature transducer, described cooler are also connected master controller with described 4th stop valve; Described master controller is attended operation interface and man-machine interface also.
9. the hydraulic jack high-precise synchronization of super large jumbo according to claim 8 is controlled to covering device, it is characterized in that:
Described fuel tank, described motor-driven gear pump, described cooler, the duplex pump of four described speed-adjustable motor drivings, described filter constitute hydraulic station;
Described hydraulic station is arranged on two layers of steelframe, wherein said fuel tank is arranged on the top layer of described steelframe, the duplex pump of described motor-driven gear pump, described cooler, four described speed-adjustable motor drivings is disposed side by side on the bottom of described steelframe, and described filter is arranged on the top of described fuel tank; Described gear pump, four described duplex pumps are communicated to the bottom of described fuel tank by oil pipe; Described cooler is communicated to described filter by oil pipe.
10. the hydraulic jack high-precise synchronization of super large jumbo according to claim 8 is controlled to covering device, it is characterized in that:
Described fuel tank internal is provided with level meter, and multiple pressure gauge is arranged on the base side of described fuel tank; The sidewall of described fuel tank is provided with maintenance window.
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| CN112922914A (en) * | 2021-01-12 | 2021-06-08 | 盾构及掘进技术国家重点实验室 | High-efficiency precise synchronous lifting hydraulic control system for segment assembly of shield tunneling machine |
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