CN104088835B - The hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking - Google Patents
The hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking Download PDFInfo
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- CN104088835B CN104088835B CN201410316619.3A CN201410316619A CN104088835B CN 104088835 B CN104088835 B CN 104088835B CN 201410316619 A CN201410316619 A CN 201410316619A CN 104088835 B CN104088835 B CN 104088835B
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Abstract
A hydraulic pressure redundancy steel axial force of the supports bucking-out system for Combined screw thread self-locking, 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 at least one power take-off unit; Described power take-off unit comprises fuel tank, hydraulic pump, redundant valve, and at least one screw thread self-locking oil cylinder, at least one 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 master cylinder cylinder, secondary cylinder barrel, and is separately positioned on main piston, auxiliary piston in major and minor cylinder barrel; The inner chamber of described major and minor cylinder barrel is separated by the left cylinder cap left and right of master cylinder cylinder; On master cylinder cylinder, be equipped with drive motors, and the ring gear engaging with drive motors, ring gear is threaded with main piston, and auxiliary piston is tight against main piston left end. 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 a kind of technology of hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking.
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 mainly contains following two kinds of versions: 1) in system, all hydraulic jacks all provide power by same hydraulic pump, this version security is poor, once hydraulic pump goes wrong, whole system has just been paralysed, and cannot ensure the safe operation of system; 2) multiple hydraulic pumps in system, are equipped with, 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.
In addition, 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 system hydraulic pressure redundancy steel axial force of the supports bucking-out system that takes up room Combined screw thread self-locking little.
In order to solve the problems of the technologies described above, the hydraulic pressure redundancy steel axial force of the supports bucking-out system of a kind of Combined screw thread self-locking provided by the present invention, comprises 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 power take-off unit also comprises a redundant valve, 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 master cylinder cylinder, secondary cylinder barrel, main piston, auxiliary piston, the two ends, left and right of master cylinder cylinder are respectively sealed by a cylinder cap, the left end sealing of secondary cylinder barrel, the right-hand member of secondary cylinder barrel docks with the left end of master cylinder cylinder, the secondary inner chamber of cylinder barrel and the inner chamber of master cylinder cylinder are separated by the left cylinder cap left and right of master cylinder cylinder, main piston is arranged on sliding matching mode in the inner chamber of master cylinder cylinder, and the inner chamber of master cylinder cylinder is separated into each separate working chamber around, left working chamber is wherein rodless cavity, right working chamber is wherein rod chamber, on the barrel of master cylinder cylinder, offer two actuator ports, one of them actuator port is communicated with rodless cavity, another actuator port is communicated with rod chamber,
Described main piston is cylinder-piston, the right-hand member of main piston extends master cylinder cylinder outside through the right cylinder cap of master cylinder cylinder, the joint portion of main piston and the right cylinder cap of master cylinder cylinder 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 master cylinder cylinder, 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 auxiliary piston is arranged on sliding matching mode in the inner chamber of secondary cylinder barrel, and coaxial with main piston, the right-hand member of auxiliary piston passes the left cylinder cap of master cylinder cylinder and is tight against main piston left end, the joint portion of auxiliary piston and the left cylinder cap of master cylinder cylinder is slidably matched and hermetic seal, the inner chamber of secondary cylinder barrel is separated into each separate sub-chamber around by auxiliary piston, left sub-chamber is wherein communicated with the rodless cavity of master cylinder cylinder, and right sub-chamber is wherein communicated with the rod chamber of master cylinder cylinder.
The hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking provided by the invention, hydraulic pump in each power take-off unit, is all equipped with, when hydraulic pump in a power take-off unit breaks down, other unit can provide power for trouble unit by redundant valve, can ensure the safe operation of system, have the advantages that security of system is high, and each screw thread self-locking oil cylinder all can utilize ring gear and externally threaded cooperation reliably of main piston side face to lock, 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 hydraulic diagram of the hydraulic pressure redundancy steel axial force of the supports bucking-out system of the Combined screw thread self-locking of the embodiment of the present invention;
Fig. 2 is that the master of the screw thread self-locking oil cylinder in the hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking of the embodiment of the present invention 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 shown in Figure 1, the hydraulic pressure redundancy steel axial force of the supports bucking-out system of a kind of Combined screw thread self-locking that the embodiment of the present invention provides, comprise 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;
As shown in Figure 2, described screw thread self-locking oil cylinder comprises master cylinder cylinder 1, secondary cylinder barrel 2, main piston 3, auxiliary piston 4, the two ends, left and right of master cylinder cylinder 1 are respectively sealed by a cylinder cap 5, the left end sealing of described secondary cylinder barrel 2, the right-hand member of secondary cylinder barrel 2 docks with the left end of master cylinder cylinder 1, the secondary inner chamber of cylinder barrel 2 and the inner chamber of master cylinder cylinder 1 are separated by left cylinder cap 5 left and right of master cylinder cylinder, main piston 3 is arranged on sliding matching mode in the inner chamber of master cylinder cylinder 1, and the inner chamber of master cylinder cylinder 1 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 master cylinder cylinder 1, offer two actuator ports, one of them actuator port is communicated with rodless cavity 11, another actuator port is communicated with rod chamber 12,
Described main piston 3 is cylinder-piston, the right-hand member of main piston 3 extends master cylinder cylinder outside through the right cylinder cap 5 of master cylinder cylinder, main piston 3 is slidably matched and hermetic seal with the joint portion of the right cylinder cap 5 of master cylinder cylinder, and the side face of main piston 3 right parts is formed with the external screw thread taking main piston central axis as the axis of screw;
On described master cylinder cylinder 1, be equipped with a drive motors 6, a rotating ring gear 7, the power output shaft of described drive motors 6 engages with ring gear 7, the core wheel axis of described ring gear 7 and main piston central axes, the inner ring of ring gear 7 has the internal thread engaging with the external screw thread of main piston right part;
Described auxiliary piston 4 is arranged on sliding matching mode in the inner chamber of secondary cylinder barrel 2, and coaxial with main piston 3, the right-hand member of auxiliary piston 4 passes the left cylinder cap 5 of master cylinder cylinder and is tight against main piston 3 left ends, auxiliary piston 4 is slidably matched and hermetic seal with the joint portion of the left cylinder cap 5 of master cylinder cylinder, the inner chamber of secondary cylinder barrel 2 is separated into each separate sub-chamber around by auxiliary piston 4, left sub-chamber is wherein communicated with the rodless cavity 11 of master cylinder cylinder, and right sub-chamber is wherein communicated with the rod chamber 12 of master cylinder cylinder.
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:
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 left sub-chamber of secondary cylinder barrel, thereby promoting auxiliary piston slides to the right, make auxiliary piston ejection main piston to the right, 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 hydraulic pressure redundancy steel axial force of the supports bucking-out system for Combined screw thread self-locking, comprises 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 power take-off unit also comprises a redundant valve, 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 master cylinder cylinder, secondary cylinder barrel, main piston, auxiliary piston, the two ends, left and right of master cylinder cylinder are respectively sealed by a cylinder cap, the left end sealing of secondary cylinder barrel, the right-hand member of secondary cylinder barrel docks with the left end of master cylinder cylinder, the secondary inner chamber of cylinder barrel and the inner chamber of master cylinder cylinder are separated by the left cylinder cap left and right of master cylinder cylinder, main piston is arranged on sliding matching mode in the inner chamber of master cylinder cylinder, and the inner chamber of master cylinder cylinder is separated into each separate working chamber around, left working chamber is wherein rodless cavity, right working chamber is wherein rod chamber, on the barrel of master cylinder cylinder, offer two actuator ports, one of them actuator port is communicated with rodless cavity, another actuator port is communicated with rod chamber,
Described main piston is cylinder-piston, the right-hand member of main piston extends master cylinder cylinder outside through the right cylinder cap of master cylinder cylinder, the joint portion of main piston and the right cylinder cap of master cylinder cylinder 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 master cylinder cylinder, 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 auxiliary piston is arranged on sliding matching mode in the inner chamber of secondary cylinder barrel, and coaxial with main piston, the right-hand member of auxiliary piston passes the left cylinder cap of master cylinder cylinder and is tight against main piston left end, the joint portion of auxiliary piston and the left cylinder cap of master cylinder cylinder is slidably matched and hermetic seal, the inner chamber of secondary cylinder barrel is separated into each separate sub-chamber around by auxiliary piston, left sub-chamber is wherein communicated with the rodless cavity of master cylinder cylinder, and right sub-chamber is wherein communicated with the rod chamber of master cylinder cylinder.
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| CN201410316619.3A CN104088835B (en) | 2014-07-06 | 2014-07-06 | The hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking |
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| CN201410316619.3A CN104088835B (en) | 2014-07-06 | 2014-07-06 | The hydraulic pressure redundancy steel axial force of the supports bucking-out system of Combined screw thread self-locking |
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| CN104088835B true CN104088835B (en) | 2016-05-18 |
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| US10428842B2 (en) * | 2017-05-05 | 2019-10-01 | Aurora Flight Sciences Corporation | Pneumatic actuation systems having improved feedback control |
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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 |
| CN204082727U (en) * | 2014-07-06 | 2015-01-07 | 上海宏信设备工程有限公司 | The hydraulic redundancy bracing members axle force compensating system of Combined screw thread self-locking |
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2014
- 2014-07-06 CN CN201410316619.3A patent/CN104088835B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102839638A (en) * | 2012-09-21 | 2012-12-26 | 江苏朝阳液压机械集团有限公司 | Hydraulic driving system for hydraulic driving bottom shaft rotating steel dam valve |
| CN103115028A (en) * | 2013-03-12 | 2013-05-22 | 北京机械设备研究所 | Electro-hydraulic servo actuator |
| 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 |
| CN204082727U (en) * | 2014-07-06 | 2015-01-07 | 上海宏信设备工程有限公司 | The hydraulic redundancy bracing members axle force compensating system of Combined screw thread self-locking |
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