CN204082725U - The oblique cone self-locking profile shaft force compensating system of power supply and hydraulic redundancy - Google Patents
The oblique cone self-locking profile shaft force compensating system of power supply and hydraulic redundancy Download PDFInfo
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- CN204082725U CN204082725U CN201420368194.6U CN201420368194U CN204082725U CN 204082725 U CN204082725 U CN 204082725U CN 201420368194 U CN201420368194 U CN 201420368194U CN 204082725 U CN204082725 U CN 204082725U
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Abstract
An oblique cone self-locking profile shaft force compensating system for power supply and hydraulic 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 output unit; Described power output unit comprises fuel tank, oil hydraulic pump, redundant valve, oblique cone self-locking oil cylinder, four Twoway valvess, oil hydraulic pump by each four Twoway valvess for each oblique cone self-locking oil cylinder provides power; Each power output unit is interconnected by redundant valve; Oblique cone self-locking oil cylinder comprises cylinder barrel, and the main piston be arranged in cylinder barrel, be arranged on the sub-piston in main piston inner chamber, main piston can be locked by the cooperation of the voussoir in positioning cavity and movable disk, described electric control unit comprises master switch, primary power supply, generator, controller and standby power supply, and primary power supply, standby power supply and generator divide three tunnels to power for each oil hydraulic pump.The system that the utility model provides, security of system is high and take up room little.
Description
Technical field
The utility model relates to hydraulic power unit technology, particularly relates to the technology of the oblique cone self-locking profile shaft force compensating system of a kind of power supply and hydraulic redundancy.
Background technique
Hydraulic pressure steel supporting system is the hydraulic power output system utilizing hydraulic jack outputting power.Existing hydraulic pressure steel supporting system has following defect:
1) existing hydraulic pressure steel supporting system all adopts single channel power supply to be that each oil hydraulic pump is powered, once power supply line breaks down, the oil hydraulic pump dead electricity in system will be caused out of service, thus cause system hydraulic pipe line decompression, cause whole system to be paralysed, the safe operation of system cannot be ensured;
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 ensure the safe operation of system;
3) multiple oil hydraulic pump is equipped with in some system, each hydraulic jack in system is divided into many groups, each oil hydraulic pump provides power for group hydraulic jack of wherein, a certain oil hydraulic pump goes wrong, only can have influence on the work of wherein one group of hydraulic jack, this structural type is relative to the mode adopting single oil hydraulic pump to provide power, and its Security wants high, but affected hydraulic jack still can the safe operation of influential system, and its Security still has much room for improvement;
4) existing hydraulic pressure steel supporting system all realizes the locking of hydraulic jack by arranging the hydraulic lock be made up of Pilot operated check valve on hydraulic pipe line, with ensure hydraulic jack can not because of the system failure unstability.But, the required precision of mode to hydrovalve that this employing hydraulic lock locks hydraulic jack is higher, and relates in the spool that there is hydrovalve, cannot realize the positive lock to hydraulic jack, there is the defect of locking poor reliability, the safe operation of meeting influential system.The monomer ouput force of existing hydraulic jack is also relatively low, under some require higher operating mode to ouput force (such as civil engineering foundation pit construction), the outputting power while of often needing multiple hydraulic jack to cooperatively interact, thus the hydraulic jack quantity in existing hydraulic pressure steel supporting system is relatively many, and system takes up room also larger.
Summary of the invention
For the defect existed in above-mentioned prior art, it is high that technical problem to be solved in the utility model is to provide a kind of security of system, the oblique cone self-locking profile shaft force compensating system of little power supply and hydraulic redundancy and system takes up room.
In order to solve the problems of the technologies described above, the oblique cone self-locking profile shaft force compensating system of a kind of power supply provided by the utility model and hydraulic 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 oblique cone self-locking oil cylinder, at least one four Twoway valves, the quantity also one_to_one corresponding consistent with the quantity of oblique cone self-locking oil cylinder of four Twoway valvess wherein, the inlet port of oil hydraulic pump wherein receives fuel tank, the pump hydraulic fluid port of oil hydraulic pump receives the pressure oil port of each four Twoway valvess, overflow relief valve is connected between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, the return opening of each four Twoway valvess receives fuel tank, two active chambers of corresponding oblique cone self-locking oil cylinder all received respectively by two actuator ports of each four Twoway valvess 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 all receives municipal power supply line by master switch, and the output terminal of primary power supply, standby power supply and generator respectively receives the control switch of each oil hydraulic pump respectively through a sub-control switch;
Described controller has multiple control signal output terminal, and each control signal output terminal of controller receives the control end of each sub-control switch respectively;
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;
First hydraulic fluid port of the redundant valve in each power output unit all receives the pressure oil port of each four Twoway valvess 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 the redundant valve in other power output unit;
Described oblique cone self-locking oil cylinder comprises cylinder barrel, main piston, sub-piston, the two ends, left and right of cylinder barrel are respectively closed 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 around, left active chamber is wherein rodless cavity, and right active chamber is wherein rod chamber, the barrel of cylinder barrel offers two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
The right-hand member of described cylinder barrel is fixed with a positioning cavity, and the inner chamber of this positioning cavity and the inner chamber of cylinder barrel cut off mutually, are provided with the movable disk of an annular in the inner chamber of positioning cavity;
Described main piston is cylinder-piston, the right part of main piston runs through right cylinder cap and the positioning cavity of cylinder barrel to the right, and pass with the ring heart of movable fit system from movable disk, the outer circumferential face of main piston and the inner ring frictional fit of movable disk, the connecting part of main piston and the right cylinder cap of cylinder barrel and the connecting part of main piston and positioning chamber body lumen wall are all slidably matched and hermetic seal;
Described positioning cavity internal fixtion has the multiple voussoirs laid around main piston axisymmetric, described movable disk is arranged in positioning cavity with sliding matching mode, and the inner chamber of positioning cavity is separated into each separate sub-chamber around, the left sub-chamber integrally closed of positioning cavity, and on the chamber wall of positioning cavity, offer the control port being communicated with its left sub-chamber, the outer ring of movable disk is formed with the conical surface, and the conical surface of movable disk outer ring is with the wedge surface wedging one by one of each voussoir in movable fit system and positioning cavity, the spring being tight against each voussoir for ordering about movable disk is provided with in positioning cavity,
Described main piston have one with it the coaxial and cylindrical cavity of integrally closed, 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 around, 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, sub-piston has an axially through axis hole, axis hole on the left sub-chamber of compensated cavity and sub-piston cuts 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 oblique cone self-locking profile shaft force compensating system of the power supply that the utility model provides and hydraulic redundancy, three tunnels are adopted to power, the normal operation of each oil hydraulic pump all can be ensured under civil power transient-power failure, the long-time situation had a power failure, and oil hydraulic pump is equipped with all in each power output unit, when oil hydraulic pump in a power output unit breaks down, other unit for trouble unit provides power, thus can ensure the safe operation of system by redundant valve, has the advantages that security of system is high; Further, each oblique cone self-locking oil cylinder all can utilize movable disk to lock reliably with coordinating of voussoir, can improve security of system further; In addition, when oblique cone self-locking oil cylinder runs, sub-piston can produce a compound thrust to main piston, the ouput force of main piston is further promoted, when oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston compares same specification can increase about 60%, and the monomer ouput force of oblique cone 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 utility model embodiment and the oblique cone self-locking profile shaft force compensating system of hydraulic redundancy;
Fig. 2 is the hydraulic diagram of the power supply of the utility model embodiment and the oblique cone self-locking profile shaft force compensating system of hydraulic redundancy;
Fig. 3 is that the master of oblique cone self-locking oil cylinder in the power supply of the utility model embodiment and the oblique cone self-locking profile shaft force compensating system of hydraulic redundancy looks cut away view.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiment of the present utility model, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar change thereof, all should list protection domain of the present utility model in.
As Figure 1-Figure 2, the oblique cone self-locking profile shaft force compensating system of a kind of power supply that the utility model embodiment provides and hydraulic 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;
First power output unit comprises fuel tank Y1, oil hydraulic pump D1, redundant valve S1, and three oblique cone self-locking oil cylinder U11, U12, U13, three four Twoway valves H11, H12, H13, the quantity also one_to_one corresponding consistent with the quantity of oblique cone self-locking oil cylinder of four Twoway valvess wherein, the inlet port of oil hydraulic pump D1 wherein receives fuel tank Y1, the pump hydraulic fluid port of oil hydraulic pump D1 receives each four Twoway valves H11, H12, the pressure oil port of H13, overflow relief valve is connected between the pump hydraulic fluid port of oil hydraulic pump D1 and fuel tank Y1, each four Twoway valves H11, H12, the return opening of H13 receives fuel tank Y1, two active chambers of corresponding oblique cone self-locking oil cylinder all received respectively by two actuator ports of each four Twoway valvess 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,
Second power output unit comprises fuel tank Y2, oil hydraulic pump D2, redundant valve S2, and three oblique cone self-locking oil cylinder U21, U22, U23, three four Twoway valves H21, H22, H23, the quantity also one_to_one corresponding consistent with the quantity of oblique cone self-locking oil cylinder of four Twoway valvess wherein, the inlet port of oil hydraulic pump D2 wherein receives fuel tank Y2, the pump hydraulic fluid port of oil hydraulic pump D2 receives each four Twoway valves H21, H22, the pressure oil port of H23, overflow relief valve is connected between the pump hydraulic fluid port of oil hydraulic pump D2 and fuel tank Y2, each four Twoway valves H21, H22, the return opening of H23 receives fuel tank Y2, two active chambers of corresponding oblique cone self-locking oil cylinder all received respectively by two actuator ports of each four Twoway valvess 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,
3rd power output unit comprises fuel tank Y3, oil hydraulic pump D3, redundant valve S3, and three oblique cone self-locking oil cylinder U31, U32, U33, three four Twoway valves H31, H32, H33, the quantity also one_to_one corresponding consistent with the quantity of oblique cone self-locking oil cylinder of four Twoway valvess wherein, the inlet port of oil hydraulic pump D3 wherein receives fuel tank Y3, the pump hydraulic fluid port of oil hydraulic pump D3 receives each four Twoway valves H31, H32, the pressure oil port of H33, overflow relief valve is connected between the pump hydraulic fluid port of oil hydraulic pump D3 and fuel tank Y3, each four Twoway valves H31, H32, the return opening of H33 receives fuel tank Y3, two active chambers of corresponding oblique cone self-locking oil cylinder all received respectively by two actuator ports of each four Twoway valvess 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,
First hydraulic fluid port of the redundant valve in each power output unit all receives the pressure oil port of each four Twoway valvess 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 the 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 all receives municipal power supply line by master switch K10; The output terminal of primary power supply J1 receives control switch K21, K22, K23 of each oil hydraulic pump D1, D2, D3 respectively through a sub-control K switch 11; The output terminal of standby power supply J2 receives control switch K21, K22, K23 of each oil hydraulic pump D1, D2, D3 respectively through a sub-control K switch 12; The output terminal of generator J3 receives control switch K21, K22, K23 of each oil hydraulic pump D1, D2, D3 respectively through a sub-control K switch 13;
Described controller J0 has multiple control signal output terminal, and each control signal output terminal of controller J0 receives the control end of each sub-control K switch 11, K12, K13 respectively;
As shown in Figure 3, described oblique cone self-locking oil cylinder comprises cylinder barrel 1, main piston 2, sub-piston 3, the two ends, left and right of cylinder barrel 1 are respectively closed by a cylinder cap 4, main piston 2 is arranged in the inner chamber of cylinder barrel 1 with sliding matching mode, and the inner chamber of cylinder barrel 1 is separated into each separate active chamber around, left active chamber is wherein rodless cavity 11, right active chamber is wherein rod chamber 12, the barrel of cylinder barrel 1 offers two actuator ports, one of them actuator port is communicated with rodless cavity 11, and another actuator port is communicated with rod chamber 12;
The right-hand member of described cylinder barrel 1 is fixed with a positioning cavity 5, and the inner chamber of this positioning cavity 5 and the inner chamber of cylinder barrel 1 cut off mutually, are provided with the movable disk 6 of an annular in the inner chamber of positioning cavity 5;
Described main piston 2 is cylinder-piston, the right part of main piston 2 runs through right cylinder cap 4 and the positioning cavity 5 of cylinder barrel to the right, and pass with the ring heart of movable fit system from movable disk 6, the outer circumferential face of main piston 2 and the inner ring frictional fit of movable disk 6, main piston 2 is all slidably matched and hermetic seal with the connecting part of the right cylinder cap 4 of cylinder barrel and the connecting part of main piston and positioning cavity 5 chamber wall;
Described positioning cavity 5 internal fixtion has the multiple voussoirs 7 laid around main piston 2 axisymmetric, described movable disk 6 is arranged in positioning cavity 5 with sliding matching mode, and the inner chamber of positioning cavity 5 is separated into each separate sub-chamber around, the left sub-chamber integrally closed of positioning cavity 5, and on the chamber wall of positioning cavity 5, offer the control port being communicated with its left sub-chamber, the outer ring of movable disk 6 is formed with the conical surface, and the conical surface of movable disk 6 outer ring is with the wedge surface wedging one by one of each voussoir 7 in movable fit system and positioning cavity, the spring 8 being tight against each voussoir 7 for ordering about movable disk 6 is provided with in positioning cavity 5,
Described main piston 2 have one with it the coaxial and cylindrical cavity of integrally closed, 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 around, 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, sub-piston 3 has an axially through axis hole 31, axis hole 31 on the left sub-chamber of compensated cavity 21 and sub-piston 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 sub-piston.
In the utility model embodiment, described controller J0, standby power supply J2 are prior art, the PLC of to be model the be SNAP-PAC-S1 that controller J0 adopts, and what standby power supply J2 adopted is model is the ups power of CP/DC/UPS-24V-40A.
In other embodiment of the utility model, the quantity of power output unit also can be more than 2 or 3, and the oblique cone self-locking oil cylinder in single power output unit and the quantity of four Twoway valvess also can be more than 2 or 3.
The working principle of the utility model embodiment is as follows:
At nominal conditions, sub-control K switch 11 closes, and sub-control K switch 12, K13 disconnect, and are powered for each oil hydraulic pump D1, D2, D3 by primary power supply J1, simultaneously standby power supply J2 storing electrical energy;
When municipal power supply line breaks down, controller J0 first controls sub-control K switch 12 and closes, be now each oil hydraulic pump D1 by standby power supply J2, D2, D3 powers, if the electric energy that standby power supply J2 saves is finished and municipal power supply line does not restore electricity, controller J0 controls sub-control K switch 13 immediately and closes, be now each oil hydraulic pump D1 by generator J3, D2, D3 powers, after municipal power supply line restores electricity, controller J0 controls sub-control K switch 11 immediately and closes, and control sub-control K switch 12, K13 disconnects, thus to return to by primary power supply J1 be each oil hydraulic pump D1, D2, the normal condition that D3 powers,
When system is normally run, each power output unit independent operating separately, each power output unit provides power by the oil hydraulic pump of this unit for each oblique cone self-locking oil cylinder in this unit, controls each oblique cone self-locking oil cylinder in this unit run by four Twoway valvess of each 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) by redundant valve for trouble unit provides power, to ensure that each oblique cone self-locking oil cylinder of trouble unit can run normally.
The working principle of the oblique cone self-locking oil cylinder in the utility model embodiment is as follows:
By the control port on positioning cavity, pressure oil is injected the left sub-chamber of positioning cavity, the elastic force that pressure oil promotion movable disk can be utilized to overcome spring moves to right, the conical surface of movable disk outer ring and each voussoir is made to depart from wedging, now the surface friction drag of movable disk to main piston is less, and main piston is in released state;
By the pressure oil release in left for positioning cavity chamber, movable disk can move to left in the elastic force effect of spring, the conical surface of movable disk outer ring and each voussoir is made to recover wedging, now under the ejection of spring, each voussoir produces an ejection force towards main piston direction to movable disk, surface friction drag between movable disk and main piston is increased, thus main piston is locked;
Under main piston is in released state, the actuator port of rod chamber side is connected oil returning tube, pressure oil is injected rodless cavity by the actuator port of rodless cavity side, main piston can be promoted slide 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, thus a compound thrust is produced to main piston, the ouput force of main piston is further promoted, when oil cylinder working-pressure is constant, existing single ram cylinder that the ouput force of main piston compares same specification can increase about 60%, main piston puts in place can by the pressure oil release in left for positioning cavity chamber, it is made to be locked in working position,
Under main piston is in released state, the actuator port of rodless cavity side is connected oil returning tube, pressure oil is injected rod chamber by the actuator port of rod chamber side, main piston can be promoted and slide left, main piston is retracted left.
Claims (1)
1. an oblique cone self-locking profile shaft force compensating system for power supply and hydraulic 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 oblique cone self-locking oil cylinder, at least one four Twoway valves, the quantity also one_to_one corresponding consistent with the quantity of oblique cone self-locking oil cylinder of four Twoway valvess wherein, the inlet port of oil hydraulic pump wherein receives fuel tank, the pump hydraulic fluid port of oil hydraulic pump receives the pressure oil port of each four Twoway valvess, overflow relief valve is connected between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, the return opening of each four Twoway valvess receives fuel tank, two active chambers of corresponding oblique cone self-locking oil cylinder all received respectively by two actuator ports of each four Twoway valvess 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 all receives municipal power supply line by master switch, and the output terminal of primary power supply, standby power supply and generator respectively receives the control switch of each oil hydraulic pump respectively through a sub-control switch;
Described controller has multiple control signal output terminal, and each control signal output terminal of controller receives the control end of each sub-control switch respectively;
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;
First hydraulic fluid port of the redundant valve in each power output unit all receives the pressure oil port of each four Twoway valvess 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 the redundant valve in other power output unit;
Described oblique cone self-locking oil cylinder comprises cylinder barrel, main piston, sub-piston, the two ends, left and right of cylinder barrel are respectively closed 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 around, left active chamber is wherein rodless cavity, and right active chamber is wherein rod chamber, the barrel of cylinder barrel offers two actuator ports, one of them actuator port is communicated with rodless cavity, and another actuator port is communicated with rod chamber;
The right-hand member of described cylinder barrel is fixed with a positioning cavity, and the inner chamber of this positioning cavity and the inner chamber of cylinder barrel cut off mutually, are provided with the movable disk of an annular in the inner chamber of positioning cavity;
Described main piston is cylinder-piston, the right part of main piston runs through right cylinder cap and the positioning cavity of cylinder barrel to the right, and pass with the ring heart of movable fit system from movable disk, the outer circumferential face of main piston and the inner ring frictional fit of movable disk, the connecting part of main piston and the right cylinder cap of cylinder barrel and the connecting part of main piston and positioning chamber body lumen wall are all slidably matched and hermetic seal;
Described positioning cavity internal fixtion has the multiple voussoirs laid around main piston axisymmetric, described movable disk is arranged in positioning cavity with sliding matching mode, and the inner chamber of positioning cavity is separated into each separate sub-chamber around, the left sub-chamber integrally closed of positioning cavity, and on the chamber wall of positioning cavity, offer the control port being communicated with its left sub-chamber, the outer ring of movable disk is formed with the conical surface, and the conical surface of movable disk outer ring is with the wedge surface wedging one by one of each voussoir in movable fit system and positioning cavity, the spring being tight against each voussoir for ordering about movable disk is provided with in positioning cavity,
Described main piston have one with it the coaxial and cylindrical cavity of integrally closed, 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 around, 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, sub-piston has an axially through axis hole, axis hole on the left sub-chamber of compensated cavity and sub-piston cuts 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 |
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| CN201420368194.6U CN204082725U (en) | 2014-07-06 | 2014-07-06 | The oblique cone self-locking profile shaft force compensating system of power supply and hydraulic redundancy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420368194.6U CN204082725U (en) | 2014-07-06 | 2014-07-06 | The oblique cone self-locking profile shaft force compensating system of power supply and hydraulic redundancy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088833A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Power supply and hydraulic redundancy oblique cone self-locking axial force compensation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088833A (en) * | 2014-07-06 | 2014-10-08 | 上海宏信设备工程有限公司 | Power supply and hydraulic redundancy oblique cone self-locking axial force compensation system |
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Granted publication date: 20150107 Termination date: 20160706 |