CN104088858A - Power supply and hydraulic redundancy thread self-locking axial force compensation system - Google Patents
Power supply and hydraulic redundancy thread self-locking axial force compensation system Download PDFInfo
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- CN104088858A CN104088858A CN201410316618.9A CN201410316618A CN104088858A CN 104088858 A CN104088858 A CN 104088858A CN 201410316618 A CN201410316618 A CN 201410316618A CN 104088858 A CN104088858 A CN 104088858A
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Abstract
The invention provides a power supply and hydraulic redundancy thread self-locking axial force compensation system, and relates to the technical field of hydraulic power equipment. The system aims to solve the technical problem that an existing system is low in safety and large in occupied space. The system comprises an electric control unit and power output units, each power output unit comprises an oil tank, a hydraulic pump, a redundant valve, a thread self-locking oil cylinder and an oil cylinder drive valve, the hydraulic pumps supply power to the thread self-locking oil cylinders through the oil cylinder drive valves, the power output units are connected through the redundant valves, each thread self-locking oil cylinder comprises a cylinder body, a main piston arranged in the cylinder body and an auxiliary piston disposed in an inner cavity of the main piston, each cylinder body is provided with annular gears, the main pistons can be locked by the annular gears through threads, the electric control unit comprises a main control switch, a main power supply, an engine, a controller and a standby power supply, and the main power supply, the standby power supply and the engine supply power to the hydraulic pumps in three paths. The system is high in safety and little in occupied space.
Description
Technical field
The present invention relates to hydraulic power unit technology, particularly relate to the technology of the screw thread self-locking profile shaft force compensating system of a kind of power supply and hydraulic pressure redundancy.
Background technique
Hydraulic pressure steel supporting system is the hydraulic power output system of utilizing hydraulic jack outputting power.Existing hydraulic pressure steel supporting system has following defect:
1) existing hydraulic pressure steel supporting system is all that employing single channel power supply is that each oil hydraulic pump is powered, once power supply line breaks down, will cause the oil hydraulic pump dead electricity in system out of service, thereby cause system hydraulic pipe line decompression, cause whole system paralysis, cannot guarantee the safe operation of system;
2) some system adopts single oil hydraulic pump to provide power for all hydraulic jacks, and this structural type Security is poor, once oil hydraulic pump goes wrong, whole system has just been paralysed, and cannot guarantee the safe operation of system;
3) a plurality of oil hydraulic pumps are equipped with in some system,, each hydraulic jack in system is divided into many groups, each oil hydraulic pump provides power for one group of hydraulic jack wherein, a certain oil hydraulic pump goes wrong, only can have influence on the wherein work of one group of hydraulic jack, this structural type is with respect to adopting single oil hydraulic pump that the mode of power is provided, and it is high that its Security is wanted, but affected hydraulic jack still can affect the safe operation of system, its Security still has much room for improvement;
4) existing hydraulic pressure steel supporting system is all by the locking that the hydraulic lock being comprised of Pilot operated check valve realizes hydraulic jack is set on hydraulic pipe line, to guarantee that hydraulic jack can be because of system failure unstability.But, the mode that this employing hydraulic lock locks hydraulic jack is higher to the required precision of hydrovalve, and exists in the spool of hydrovalve and relate to, and cannot realize the absolute locking to hydraulic jack, the defect that exists locking poor reliability, can affect the safe operation of system.The monomer ouput force of existing hydraulic jack is also relatively low, under the operating mode of ouput force being had relatively high expectations at some (such as civil engineering foundation pit construction), often need a plurality of hydraulic jacks simultaneously outputting power that cooperatively interacts, thereby the hydraulic jack quantity in existing hydraulic pressure steel supporting system is relatively many, system takes up room also larger.
Summary of the invention
For the defect existing in above-mentioned prior art, it is high that technical problem to be solved by this invention is to provide a kind of security of system, and the take up room screw thread self-locking profile shaft force compensating system of little power supply and hydraulic pressure redundancy of system.
In order to solve the problems of the technologies described above, the screw thread self-locking profile shaft force compensating system of a kind of power supply provided by the present invention and hydraulic pressure redundancy, comprises electric control unit, and at least one power output unit;
Described power output unit comprises fuel tank, oil hydraulic pump, and at least one screw thread self-locking oil cylinder, at least one hydraulic oil cylinder driving valve, the quantity of hydraulic oil cylinder driving valve is wherein consistent with the quantity of screw thread self-locking oil cylinder and corresponding one by one, hydraulic oil cylinder driving valve is wherein four Twoway valvess, the inlet port of oil hydraulic pump is received fuel tank, the pump hydraulic fluid port of oil hydraulic pump is received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve, between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, be connected to overflow relief valve, the return opening of each hydraulic oil cylinder driving valve is received fuel tank, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two active chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock,
It is characterized in that: described electric control unit comprises master switch, primary power supply, generator, controller, and the standby power supply of energy storing electrical energy;
The input end of described primary power supply and standby power supply is all received municipal power supply line by master switch, and each receives respectively the control switch of each oil hydraulic pump the output terminal of primary power supply, standby power supply and generator through a sub-control switch;
Described controller has a plurality of control signal output terminals, and each control signal output terminal of controller is received respectively the control end of each sub-control switch;
Described power output unit also comprises a redundant valve, and described redundant valve is stop valve, and two actuator ports of redundant valve are respectively the first hydraulic fluid port, the second hydraulic fluid port;
The first hydraulic fluid port of the redundant valve in each power output unit is all received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve of this unit, and second hydraulic fluid port of the redundant valve in each power output unit is all communicated with the second hydraulic fluid port of redundant valve in other power output unit;
Described screw thread self-locking oil cylinder comprises cylinder barrel, main piston, sub-piston, each is sealed the two ends, left and right of cylinder barrel by a cylinder cap, main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate active chamber of left and right, left active chamber is wherein rodless cavity, and right active chamber is wherein rod chamber, offers two actuator ports on the barrel of cylinder barrel, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
Described main piston is cylinder-piston, the right-hand member of main piston extends cylinder barrel outside through the right cylinder cap of cylinder barrel, the connecting part of main piston and the right cylinder cap of cylinder barrel is slidably matched and hermetic seal, and the side face of main piston right part is formed with take the outside thread that main piston central axis is screw axis;
On described cylinder barrel, be equipped with a drive motor, a rotating ring gear, the pto＝power take-off of described drive motor and ring gear engagement, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread with the outside thread engagement of main piston right part;
Described main piston has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber, left and right, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, on sub-piston, there is an axis hole axially connecting, the left sub-chamber of compensated cavity and the axis hole on sub-piston cut off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
The screw thread self-locking profile shaft force compensating system of power supply provided by the invention and hydraulic pressure redundancy, adopt three tunnel power supplies, under civil power transient-power failure, the long-time situation having a power failure, all can ensure the normal operation of each oil hydraulic pump, oil hydraulic pump in each power output unit, is all equipped with and, when the oil hydraulic pump in a power output unit breaks down, other unit can provide power for trouble unit by redundant valve, thereby can guarantee the safe operation of system, has the advantages that security of system is high; Further, each screw thread self-locking oil cylinder all can utilize ring gear and externally threaded cooperation reliably of main piston side face to lock, and can further improve security of system; In addition, during the operation of screw thread self-locking oil cylinder, sub-piston can produce a compound thrust to main piston, the ouput force of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston is compared same specification can increase by 60% left and right, and the monomer ouput force of screw thread self-locking oil cylinder is larger, therefore in system, the oil cylinder quantity of required configuration is relatively less, and system takes up room also less.
Accompanying drawing explanation
Fig. 1 is the electric drawings of the power supply of the embodiment of the present invention and the screw thread self-locking profile shaft force compensating system of hydraulic pressure redundancy;
Fig. 2 is the hydraulic diagram of the power supply of the embodiment of the present invention and the screw thread self-locking profile shaft force compensating system of hydraulic pressure redundancy;
Fig. 3 is that the master of the screw thread self-locking oil cylinder in the power supply of the embodiment of the present invention and the screw thread self-locking profile shaft force compensating system of hydraulic pressure redundancy looks cut away view.
Embodiment
Below in conjunction with accompanying drawing explanation, embodiments of the invention are described in further detail, but the present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof, all should list protection scope of the present invention in.
As Figure 1-Figure 2, the screw thread self-locking profile shaft force compensating system of a kind of power supply that the embodiment of the present invention provides and hydraulic pressure redundancy, comprise electric control unit, and three power output units, these three power output units are respectively the first power output unit, the second power output unit, the 3rd power output unit;
The first power output unit comprises fuel tank Y1, oil hydraulic pump D1, redundant valve S1, and two screw thread self-locking oil cylinder U11, U12, two hydraulic oil cylinder driving valve H11, H12, the quantity of hydraulic oil cylinder driving valve is wherein consistent with the quantity of screw thread self-locking oil cylinder and corresponding one by one, the inlet port of oil hydraulic pump D1 is wherein received fuel tank Y1, the pump hydraulic fluid port of oil hydraulic pump D1 is received each hydraulic oil cylinder driving valve H11, the pressure hydraulic fluid port of H12, between the pump hydraulic fluid port of oil hydraulic pump D1 and fuel tank Y1, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H11, the return opening of H12 is received fuel tank Y1, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two active chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock, redundant valve S1 is stop valve, and two actuator ports of redundant valve S1 are respectively the first hydraulic fluid port, the second hydraulic fluid port,
The second power output unit comprises fuel tank Y2, oil hydraulic pump D2, redundant valve S2, and two screw thread self-locking oil cylinder U21, U22, two hydraulic oil cylinder driving valve H21, H22, the quantity of hydraulic oil cylinder driving valve is wherein consistent with the quantity of screw thread self-locking oil cylinder and corresponding one by one, the inlet port of oil hydraulic pump D2 is wherein received fuel tank Y2, the pump hydraulic fluid port of oil hydraulic pump D2 is received each hydraulic oil cylinder driving valve H21, the pressure hydraulic fluid port of H22, between the pump hydraulic fluid port of oil hydraulic pump D2 and fuel tank Y2, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H21, the return opening of H22 is received fuel tank Y2, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two active chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock, redundant valve S2 is stop valve, and two actuator ports of redundant valve S2 are respectively the first hydraulic fluid port, the second hydraulic fluid port,
The 3rd power output unit comprises fuel tank Y3, oil hydraulic pump D3, redundant valve S3, and two screw thread self-locking oil cylinder U31, U32, two hydraulic oil cylinder driving valve H31, H32, the quantity of hydraulic oil cylinder driving valve is wherein consistent with the quantity of screw thread self-locking oil cylinder and corresponding one by one, the inlet port of oil hydraulic pump D3 is wherein received fuel tank Y3, the pump hydraulic fluid port of oil hydraulic pump D3 is received each hydraulic oil cylinder driving valve H31, the pressure hydraulic fluid port of H32, between the pump hydraulic fluid port of oil hydraulic pump D3 and fuel tank Y3, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H31, the return opening of H32 is received fuel tank Y3, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two active chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock, redundant valve S3 is stop valve, and two actuator ports of redundant valve S3 are respectively the first hydraulic fluid port, the second hydraulic fluid port,
The first hydraulic fluid port of the redundant valve in each power output unit is all received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve of this unit, and second hydraulic fluid port of the redundant valve in each power output unit is all communicated with the second hydraulic fluid port of redundant valve in other power output unit;
Described electric control unit comprises master switch K10, primary power supply J1, generator J3, controller J0, and the standby power supply J2 of energy storing electrical energy;
The input end of described primary power supply J1 and standby power supply J2 is all received municipal power supply line by master switch K10; The output terminal of primary power supply J1 is received respectively each oil hydraulic pump D1, control switch K21, the K22 of D2, D3, K23 through a sub-control K switch 11; The output terminal of standby power supply J2 is received respectively each oil hydraulic pump D1, control switch K21, the K22 of D2, D3, K23 through a sub-control K switch 12; The output terminal of generator J3 is received respectively each oil hydraulic pump D1, control switch K21, the K22 of D2, D3, K23 through a sub-control K switch 13;
Described controller J0 has a plurality of control signal output terminals, and each control signal output terminal of controller J0 is received respectively the control end of each sub-control K switch 11, K12, K13;
As shown in Figure 3, described screw thread self-locking oil cylinder comprises cylinder barrel 1, main piston 2, sub-piston 3, each is sealed the two ends, left and right of cylinder barrel 1 by a cylinder cap 4, main piston 2 is arranged in cylinder barrel 1 inner chamber with sliding matching mode, and cylinder barrel 1 inner chamber is separated into each separate active chamber of left and right, left active chamber is wherein rodless cavity 11, right active chamber is wherein rod chamber 12, on the barrel of cylinder barrel 1, offer two actuator ports, one of them actuator port is communicated with rodless cavity 11, and another actuator port is communicated with rod chamber 12;
Described main piston 2 is cylinder-piston, the right-hand member of main piston 2 extends cylinder barrel outside through the right cylinder cap 4 of cylinder barrel, main piston 2 is slidably matched and hermetic seal with the connecting part of the right cylinder cap 4 of cylinder barrel, and the side face of main piston 2 right parts is formed with take the outside thread that main piston central axis is screw axis;
On described cylinder barrel 1, be equipped with the rotating ring gear 6 of a drive motor 5,, the pto＝power take-off of described drive motor 5 and ring gear 6 engagements, the core wheel axis of described ring gear 6 and main piston central axes, the inner ring of ring gear 6 has the internal thread with the outside thread engagement of main piston 2 right parts;
Described main piston 2 has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity 21, described sub-piston 3 is arranged in compensated cavity 21 with sliding matching mode, and compensated cavity 21 is separated into each separate sub-chamber, left and right, the left end of sub-piston 3 stretches into the rodless cavity 11 of cylinder barrel through the left end chamber wall of compensated cavity 21, sub-piston 3 is slidably matched and hermetic seal with the connecting part of main piston 2, on sub-piston 3, there is an axis hole 31 axially connecting, left sub-chamber and the axis hole 31 on sub-piston of compensated cavity 21 cut off mutually, the right sub-chamber of compensated cavity 21 is communicated with the rodless cavity 11 of cylinder barrel by the axis hole 31 on sub-piston.
In the embodiment of the present invention, described controller J0, standby power supply J2 are prior art, and what controller J0 adopted is that model is the PLC controller of SNAP-PAC-S1, and what standby power supply J2 adopted is that model is the ups power of CP/DC/UPS-24V-40A.
In other embodiment of the present invention, the quantity of power output unit can be also more than 2 or 3, and the screw thread self-locking oil cylinder in single power output unit and the quantity of hydraulic oil cylinder driving valve can be also more than 2.
The working principle of the embodiment of the present invention is as follows:
Under normal condition, sub-control K switch 11 closures, sub-control K switch 12, K13 disconnect, and by primary power supply J1, are that each oil hydraulic pump D1, D2, D3 power, simultaneously standby power supply J2 storing electrical energy;
When municipal power supply line breaks down, controller J0 first controls sub-control K switch 12 closures, by standby power supply J2, be now each oil hydraulic pump D1, D2, D3 power supply, if the electric energy of standby power supply J2 savings is finished, municipal power supply line does not restore electricity, controller J0 controls sub-control K switch 13 closures immediately, by generator J3, be now each oil hydraulic pump D1, D2, D3 power supply, after municipal power supply line restores electricity, controller J0 controls sub-control K switch 11 closures immediately, and control sub-control K switch 12, K13 disconnects, thereby returning to by primary power supply J1 is each oil hydraulic pump D1, D2, the normal condition of D3 power supply,
When system is normally moved, each power output unit is independent operating separately, the oil hydraulic pump of each power output unit by this unit provides power for each screw thread self-locking oil cylinder in this unit, controls each screw thread self-locking oil cylinder in this unit move by each hydraulic oil cylinder driving valve in this unit;
When the oil hydraulic pump in a certain power output unit (such as the first power output unit) breaks down, oil hydraulic pump in other power output unit (such as second, third power output unit) provides power by redundant valve for trouble unit, to guarantee that each screw thread self-locking oil cylinder of trouble unit can move normally.
The working principle of the screw thread self-locking oil cylinder in the embodiment of the present invention is as follows:
The actuator port of rod chamber side is connected to oil returning tube, the actuator port that pressure oil is passed through to rodless cavity side injects rodless cavity, utilize drive motor to order about ring gear forward simultaneously, can promote main piston slides to the right, main piston is stretched out to the right, meanwhile, pressure oil in rodless cavity enters the right sub-chamber of compensated cavity by the axis hole on sub-piston, thereby main piston is produced to a compound thrust, the ouput force of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston is compared same specification can increase by 60% left and right, after main piston slides and puts in place, drive motor stall, ring gear is stall thereupon also, now ring gear can be by thread engagement mode by the firm locking of main piston,
The actuator port of rodless cavity side is connected to oil returning tube, by the actuator port injection rod chamber of rod chamber side, utilize drive motor to order about ring gear reversion pressure oil simultaneously, can promote main piston and slide left, main piston is retracted left.
Claims (1)
1. a screw thread self-locking profile shaft force compensating system for power supply and hydraulic pressure redundancy, comprises electric control unit, and at least one power output unit;
Described power output unit comprises fuel tank, oil hydraulic pump, and at least one screw thread self-locking oil cylinder, at least one hydraulic oil cylinder driving valve, the quantity of hydraulic oil cylinder driving valve is wherein consistent with the quantity of screw thread self-locking oil cylinder and corresponding one by one, hydraulic oil cylinder driving valve is wherein four Twoway valvess, the inlet port of oil hydraulic pump is received fuel tank, the pump hydraulic fluid port of oil hydraulic pump is received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve, between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, be connected to overflow relief valve, the return opening of each hydraulic oil cylinder driving valve is received fuel tank, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two active chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock,
It is characterized in that: described electric control unit comprises master switch, primary power supply, generator, controller, and the standby power supply of energy storing electrical energy;
The input end of described primary power supply and standby power supply is all received municipal power supply line by master switch, and each receives respectively the control switch of each oil hydraulic pump the output terminal of primary power supply, standby power supply and generator through a sub-control switch;
Described controller has a plurality of control signal output terminals, and each control signal output terminal of controller is received respectively the control end of each sub-control switch;
Described power output unit also comprises a redundant valve, and described redundant valve is stop valve, and two actuator ports of redundant valve are respectively the first hydraulic fluid port, the second hydraulic fluid port;
The first hydraulic fluid port of the redundant valve in each power output unit is all received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve of this unit, and second hydraulic fluid port of the redundant valve in each power output unit is all communicated with the second hydraulic fluid port of redundant valve in other power output unit;
Described screw thread self-locking oil cylinder comprises cylinder barrel, main piston, sub-piston, each is sealed the two ends, left and right of cylinder barrel by a cylinder cap, main piston is arranged in inner cavity of cylinder with sliding matching mode, and inner cavity of cylinder is separated into each separate active chamber of left and right, left active chamber is wherein rodless cavity, and right active chamber is wherein rod chamber, offers two actuator ports on the barrel of cylinder barrel, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
Described main piston is cylinder-piston, the right-hand member of main piston extends cylinder barrel outside through the right cylinder cap of cylinder barrel, the connecting part of main piston and the right cylinder cap of cylinder barrel is slidably matched and hermetic seal, and the side face of main piston right part is formed with take the outside thread that main piston central axis is screw axis;
On described cylinder barrel, be equipped with a drive motor, a rotating ring gear, the pto＝power take-off of described drive motor and ring gear engagement, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread with the outside thread engagement of main piston right part;
Described main piston has the cylindrical cavity of an and integrally closed coaxial with it, this cylindrical cavity is compensated cavity, described sub-piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber, left and right, the left end of sub-piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the connecting part of sub-piston and main piston is slidably matched and hermetic seal, on sub-piston, there is an axis hole axially connecting, the left sub-chamber of compensated cavity and the axis hole on sub-piston cut off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on sub-piston.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316618.9A CN104088858B (en) | 2014-07-06 | 2014-07-06 | The screw thread self-locking profile shaft force compensating system of power supply and hydraulic pressure redundancy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410316618.9A CN104088858B (en) | 2014-07-06 | 2014-07-06 | The screw thread self-locking profile shaft force compensating system of power supply and hydraulic pressure redundancy |
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| CN104088858A true CN104088858A (en) | 2014-10-08 |
| CN104088858B CN104088858B (en) | 2016-05-18 |
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| CN204082781U (en) * | 2014-07-06 | 2015-01-07 | 上海宏信设备工程有限公司 | The screw thread self-locking profile shaft force compensating system of power supply and hydraulic redundancy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0103727A1 (en) * | 1982-09-02 | 1984-03-28 | Inventio Ag | Synchronization control apparatus for the electro-hydraulic drive of a press brake |
| WO2013184656A1 (en) * | 2012-06-04 | 2013-12-12 | Aero Controlex Group Inc. | Blow down actuator assembly |
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| CN103775430A (en) * | 2013-11-15 | 2014-05-07 | 杜雨轩 | Spiral self-locking hydraulic cylinder |
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