CN104088858B - The screw thread self-locking profile shaft force compensating system of power supply and hydraulic pressure redundancy - Google Patents
The screw thread self-locking profile shaft force compensating system of power supply and hydraulic pressure redundancy Download PDFInfo
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- CN104088858B CN104088858B CN201410316618.9A CN201410316618A CN104088858B CN 104088858 B CN104088858 B CN 104088858B CN 201410316618 A CN201410316618 A CN 201410316618A CN 104088858 B CN104088858 B CN 104088858B
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Abstract
A screw thread self-locking profile shaft force compensating system for power supply and hydraulic pressure redundancy, relates to hydraulic power unit technical field, and what solve is the low and large technical problem that takes up room of existing system security. This system comprises electric control unit and power take-off unit; Described power take-off unit comprises fuel tank, hydraulic pump, redundant valve, screw thread self-locking oil cylinder, hydraulic oil cylinder driving valve, and hydraulic pump provides power by each hydraulic oil cylinder driving valve for each screw thread self-locking oil cylinder; Each power take-off unit interconnects by redundant valve; Screw thread self-locking oil cylinder comprises cylinder barrel, and be arranged on the main piston in cylinder barrel, be arranged on the auxiliary piston in main piston inner chamber, on cylinder barrel, be equipped with ring gear, main piston can pass through thread lock by ring gear, described electric control unit comprises master switch, main power source, generator, controller and stand-by power supply, and main power source, stand-by power supply and generator Fen San road are each hydraulic pump power supply. System provided by the invention, security of system is high and take up room little.
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 technology
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 hydraulic pump is powered, once supply line breaks down, will cause the hydraulic pump dead electricity in system out of service, thereby cause system fluid pressure line decompression, cause whole system paralysis, cannot ensure the safe operation of system;
2) some system adopts single hydraulic pump to provide power for all hydraulic jacks, and this version security is poor, once hydraulic pump goes wrong, whole system has just been paralysed, and cannot ensure the safe operation of system;
3) multiple hydraulic pumps are equipped with in some system,, each hydraulic jack in system is divided into many groups, each hydraulic pump provides power for one group of hydraulic jack wherein, a certain hydraulic pump goes wrong, only can have influence on the wherein work of one group of hydraulic jack, this version is with respect to adopting single 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, and its security still has much room for improvement;
4) existing hydraulic pressure steel supporting system is all realized the locking of hydraulic jack by the hydraulic lock being made up of hydraulic control one-way valve being set on fluid pressure line, to ensure 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 hydraulic valve, and exists in the spool of hydraulic valve 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 power output of existing hydraulic jack is also relatively low, under the operating mode of power output being had relatively high expectations at some (such as civil engineering foundation pit construction), often need multiple hydraulic jacks simultaneously outputting power that cooperatively interacts, thereby 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 take-off unit;
Described power take-off unit comprises fuel tank, 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 two-port valves, the inlet port of hydraulic pump is received fuel tank, the pump hydraulic fluid port of hydraulic pump is received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve, between the pump hydraulic fluid port of hydraulic pump and fuel tank, be connected to overflow relief valve, the oil 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 working chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock,
It is characterized in that: described electric control unit comprises master switch, main power source, generator, controller, and the stand-by power supply of energy storing electrical energy;
The input of described main power source and stand-by power supply is all received municipal supply line by master switch, and the output of main power source, stand-by power supply and generator is respectively received respectively the gauge tap of each hydraulic pump through a sub-control switch;
Described controller has multiple control signal outputs, and each control signal output of controller is received respectively the control end of each sub-control switch;
Described power take-off 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 take-off 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 take-off unit is all communicated with the second hydraulic fluid port of the redundant valve in other power take-off unit;
Described screw thread self-locking oil cylinder comprises cylinder barrel, main piston, auxiliary piston, the two ends, left and right of cylinder barrel are respectively sealed 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 working chamber around, left working chamber is wherein rodless cavity, and right working 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 joint portion 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 the external screw thread taking main piston central axis as the axis of screw;
On described cylinder barrel, be equipped with a drive motors, a rotating ring gear, the power output shaft of described drive motors engages with ring gear, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread engaging with the external screw thread 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 auxiliary piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of auxiliary piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the joint portion of auxiliary piston and main piston is slidably matched and hermetic seal, on auxiliary piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the auxiliary piston of compensated cavity cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on auxiliary 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 hydraulic pump, hydraulic pump in each power take-off unit, is all equipped with and, when hydraulic pump in a power take-off unit breaks down, other unit can provide power for trouble unit by redundant valve, thereby can ensure 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, when the operation of screw thread self-locking oil cylinder, auxiliary piston can produce a compound thrust to main piston, the power output of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the power output of main piston is compared same specification can increase by 60% left and right, and the monomer power output 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.
Brief description of the drawings
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.
Detailed description of the invention
Below in conjunction with brief description of the drawings, 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 take-off units, these three power take-off units are respectively the first power take-off unit, the second power take-off unit, the 3rd power take-off unit;
The first power take-off unit comprises fuel tank Y1, 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 hydraulic pump D1 is wherein received fuel tank Y1, the pump hydraulic fluid port of 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 hydraulic pump D1 and fuel tank Y1, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H11, the oil return opening of H12 is received fuel tank Y1, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two working 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 take-off unit comprises fuel tank Y2, 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 hydraulic pump D2 is wherein received fuel tank Y2, the pump hydraulic fluid port of 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 hydraulic pump D2 and fuel tank Y2, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H21, the oil return opening of H22 is received fuel tank Y2, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two working 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 take-off unit comprises fuel tank Y3, 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 hydraulic pump D3 is wherein received fuel tank Y3, the pump hydraulic fluid port of 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 hydraulic pump D3 and fuel tank Y3, be connected to overflow relief valve, each hydraulic oil cylinder driving valve H31, the oil return opening of H32 is received fuel tank Y3, two actuator ports of each hydraulic oil cylinder driving valve are all received respectively two working 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 take-off 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 take-off unit is all communicated with the second hydraulic fluid port of the redundant valve in other power take-off unit;
Described electric control unit comprises master switch K10, main power source J1, generator J3, controller J0, and the stand-by power supply J2 of energy storing electrical energy;
The input of described main power source J1 and stand-by power supply J2 is all received municipal supply line by master switch K10; The output of main power source J1 is received respectively each hydraulic pump D1, gauge tap K21, the K22 of D2, D3, K23 through a sub-control K switch 11; The output of stand-by power supply J2 is received respectively each hydraulic pump D1, gauge tap K21, the K22 of D2, D3, K23 through a sub-control K switch 12; The output of generator J3 is received respectively each hydraulic pump D1, gauge tap K21, the K22 of D2, D3, K23 through a sub-control K switch 13;
Described controller J0 has multiple control signal outputs, and each control signal output 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, auxiliary piston 3, the two ends, left and right of cylinder barrel 1 are respectively sealed 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 working chamber around, left working chamber is wherein rodless cavity 11, right working 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 joint portion of the right cylinder cap 4 of cylinder barrel, and the side face of main piston 2 right parts is formed with the external screw thread taking main piston central axis as the axis of screw;
On described cylinder barrel 1, be equipped with a drive motors 5, a rotating ring gear 6, the power output shaft of described drive motors 5 engages with ring gear 6, 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 engaging with the external screw thread 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 auxiliary piston 3 is arranged in compensated cavity 21 with sliding matching mode, and compensated cavity 21 is separated into each separate sub-chamber around, the left end of auxiliary piston 3 stretches into the rodless cavity 11 of cylinder barrel through the left end chamber wall of compensated cavity 21, auxiliary piston 3 is slidably matched and hermetic seal with the joint portion of main piston 2, on auxiliary piston 3, there is an axis hole 31 axially connecting, axis hole 31 on left sub-chamber and the auxiliary piston of compensated cavity 21 cuts 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 auxiliary piston.
In the embodiment of the present invention, described controller J0, stand-by power supply J2 are prior art, and what controller J0 adopted is that model is the PLC controller of SNAP-PAC-S1, and what stand-by 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 take-off unit can be also more than 2 or 3, and the screw thread self-locking oil cylinder in single power take-off unit and the quantity of hydraulic oil cylinder driving valve can be also more than 2.
The operation 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 are that each hydraulic pump D1, D2, D3 power by main power source J1, simultaneously stand-by power supply J2 storing electrical energy;
In the time that municipal supply line breaks down, controller J0 first controls sub-control K switch 12 closures, be now each hydraulic pump D1 by stand-by power supply J2, D2, D3 power supply, if the electric energy of stand-by power supply J2 savings is finished, municipal supply line does not restore electricity, controller J0 controls sub-control K switch 13 closures immediately, be now each hydraulic pump D1 by generator J3, D2, D3 power supply, after municipal 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 main power source J1 is each hydraulic pump D1, D2, the normal condition of D3 power supply,
When system is normally moved, each power take-off unit independent operating separately, the hydraulic pump of each power take-off 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 operation in this unit by each hydraulic oil cylinder driving valve in this unit;
In the time that the hydraulic pump in a certain power take-off unit (such as the first power take-off unit) breaks down, hydraulic pump in other power take-off unit (such as second, third power take-off unit) provides power by redundant valve for trouble unit, can move normally with each screw thread self-locking oil cylinder that ensures trouble unit.
The operation 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, pressure oil is injected to rodless cavity by the actuator port of rodless cavity side, utilize drive motors 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 auxiliary piston, thereby main piston is produced to a compound thrust, the power output of main piston is further promoted, in the situation that oil cylinder working-pressure is constant, existing single ram cylinder that the power output of main piston is compared same specification can increase by 60% left and right, after main piston slides and puts in place, drive motors stall, ring gear is stall thereupon also, now ring gear can be by screw-threaded engagement mode by locking firm main piston,
The actuator port of rodless cavity side is connected to oil returning tube, pressure oil is injected to rod chamber by the actuator port of rod chamber side, utilize drive motors to order about ring gear reversion 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, at least one power take-off unit;
Described power take-off unit comprises fuel tank, hydraulic pump, 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 three-position four-way valve, the inlet port of hydraulic pump is received fuel tank, the pump hydraulic fluid port of hydraulic pump is received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve, between the pump hydraulic fluid port of hydraulic pump and fuel tank, be connected to overflow relief valve, the oil 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 working chambers of corresponding screw thread self-locking oil cylinder by hydraulic lock,
It is characterized in that: described electric control unit comprises the stand-by power supply of master switch, main power source, generator, controller, energy storing electrical energy;
The input of described main power source and stand-by power supply is all received municipal supply line by master switch, and the output of main power source, stand-by power supply and generator is respectively received respectively the gauge tap of each hydraulic pump through a sub-control switch;
Described controller has multiple control signal outputs, and each control signal output of controller is received respectively the control end of each sub-control switch;
Described power take-off 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 take-off unit is all received the pressure hydraulic fluid port of each hydraulic oil cylinder driving valve of this unit, and the second hydraulic fluid port of the redundant valve in each power take-off unit is all communicated with the second hydraulic fluid port of the redundant valve in other power take-off unit;
Described screw thread self-locking oil cylinder comprises cylinder barrel, main piston, auxiliary piston, the two ends, left and right of cylinder barrel are respectively sealed 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 working chamber around, left working chamber is wherein rodless cavity, and right working 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 joint portion 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 the external screw thread taking main piston central axis as the axis of screw;
On described cylinder barrel, be equipped with a drive motors, a rotating ring gear, the power output shaft of described drive motors engages with ring gear, the core wheel axis of described ring gear and main piston central axes, the inner ring of ring gear has the internal thread engaging with the external screw thread 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 auxiliary piston is arranged in compensated cavity with sliding matching mode, and compensated cavity is separated into each separate sub-chamber around, the left end of auxiliary piston stretches into the rodless cavity of cylinder barrel through the left end chamber wall of compensated cavity, the joint portion of auxiliary piston and main piston is slidably matched and hermetic seal, on auxiliary piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the auxiliary piston of compensated cavity cuts off mutually, the right sub-chamber of compensated cavity is communicated with the rodless cavity of cylinder barrel by the axis hole on auxiliary piston.
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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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| 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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| CN104088858B true CN104088858B (en) | 2016-05-18 |
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| WO2013184656A1 (en) * | 2012-06-04 | 2013-12-12 | Aero Controlex Group Inc. | Blow down actuator assembly |
| CN103775430A (en) * | 2013-11-15 | 2014-05-07 | 杜雨轩 | Spiral self-locking hydraulic cylinder |
| 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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- 2014-07-06 CN CN201410316618.9A patent/CN104088858B/en active Active
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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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| CN203272294U (en) * | 2013-05-10 | 2013-11-06 | 浙江工商职业技术学院 | Flexible adjustable machine tool circuit |
| CN103775430A (en) * | 2013-11-15 | 2014-05-07 | 杜雨轩 | Spiral self-locking hydraulic cylinder |
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