CN104100602A - Composite pawl self-locking hydraulic redundancy steel support axial force compensation system - Google Patents
Composite pawl self-locking hydraulic redundancy steel support axial force compensation system Download PDFInfo
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- CN104100602A CN104100602A CN201410316628.2A CN201410316628A CN104100602A CN 104100602 A CN104100602 A CN 104100602A CN 201410316628 A CN201410316628 A CN 201410316628A CN 104100602 A CN104100602 A CN 104100602A
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Abstract
The invention discloses a composite pawl self-locking hydraulic redundancy steel support axial force compensation system, relates to the technical field of hydraulic power equipment, and solves the technical problems that an existing system is low in safety and high in space occupation. The system comprises at least one power output unit. Each power output unit comprises an oil tank, a hydraulic pump, a redundancy valve, at least one pawl self-locking oil cylinder and at least one four-position two-way valve. The hydraulic pump provides power for each pawl self-locking oil cylinder through the corresponding four-position two-way valve. The power output units are connected through the redundancy valves. Each pawl self-locking oil cylinder comprises a cylinder barrel, a main piston mounting in the cylinder barrel and an auxiliary piston mounted in the inner cavity of the main piston, wherein a rack is disposed on the right peripheral face of the main piston, and a pawl matched with the rack is pivoted to the cylinder barrel. The system is high in safety and low in space occupation.
Description
Technical field
The present invention relates to hydraulic power unit technology, particularly relate to the technology of the hydraulic pressure redundancy steel axial force of the supports bucking-out system of a kind of combined type ratchet self-locking.
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 mainly contains following two kinds of structural types: 1) in system, all hydraulic jacks all provide power by same oil hydraulic pump, 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; 2) multiple oil hydraulic pumps in system, are equipped with, 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, 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 Pilot operated check valve being set on hydraulic pipe 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 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 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 the self-locking of combined type ratchet 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 type ratchet provided by the present invention self-locking, comprises at least one power output unit;
Described power output unit comprises fuel tank, oil hydraulic pump, and at least one ratchet self-locking oil cylinder, at least one four Twoway valves, the quantity of four Twoway valvess is wherein consistent with the quantity of ratchet self-locking oil cylinder and corresponding one by one, the inlet port of oil hydraulic pump is wherein received fuel tank, the pump hydraulic fluid port of oil hydraulic pump is received the pressure hydraulic fluid port of each four Twoway valvess, between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, be connected to overflow relief valve, the return opening of each four Twoway valvess is received fuel tank, two actuator ports of each four Twoway valvess are all received respectively two active chambers of corresponding ratchet self-locking oil cylinder by hydraulic lock,
It is characterized in that: described power output 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 output unit is all received the pressure hydraulic fluid 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 ratchet self-locking oil cylinder comprises cylinder barrel, main piston, sub-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 active chamber around, 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 at least one lineal shape ratchet bar that is parallel to main piston slip axis;
On described cylinder barrel, be pivoted with at least one ratchet, each ratchet can be switched to each ratchet bar of main piston side face and engage respectively, and can be switched to each ratchet bar and depart from and engage;
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 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, on sub-piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the sub-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 sub-piston.
The hydraulic pressure redundancy steel axial force of the supports bucking-out system of combined type ratchet provided by the invention self-locking, oil hydraulic pump in each power output unit, is all equipped with, when oil hydraulic pump in a power output 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 ratchet self-locking oil cylinder all can utilize ratchet and coordinating reliably of ratchet bar to lock, can further improve security of system; In addition, when the operation of ratchet 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 ratchet 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 type ratchet self-locking of the embodiment of the present invention;
Fig. 2 is that the master of the ratchet self-locking oil cylinder in the hydraulic pressure redundancy steel axial force of the supports bucking-out system of combined type ratchet self-locking of the embodiment of the present invention looks cut away view.
Embodiment
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 type ratchet self-locking that the embodiment of the present invention provides, comprise 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 three ratchet self-locking oil cylinder U11, U12, U13, three four Twoway valves H11, H12, H13, the quantity of four Twoway valvess is wherein consistent with the quantity of ratchet 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 four Twoway valves H11, H12, the pressure hydraulic fluid port of H13, between the pump hydraulic fluid port of oil hydraulic pump D1 and fuel tank Y1, be connected to overflow relief valve, each four Twoway valves H11, H12, the return opening of H13 is received fuel tank Y1, two actuator ports of each four Twoway valvess are all received respectively two active chambers of corresponding ratchet 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 three ratchet self-locking oil cylinder U21, U22, U23, three four Twoway valves H21, H22, H23, the quantity of four Twoway valvess is wherein consistent with the quantity of ratchet 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 four Twoway valves H21, H22, the pressure hydraulic fluid port of H23, between the pump hydraulic fluid port of oil hydraulic pump D2 and fuel tank Y2, be connected to overflow relief valve, each four Twoway valves H21, H22, the return opening of H23 is received fuel tank Y2, two actuator ports of each four Twoway valvess are all received respectively two active chambers of corresponding ratchet 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 three ratchet self-locking oil cylinder U31, U32, U33, three four Twoway valves H31, H32, H33, the quantity of four Twoway valvess is wherein consistent with the quantity of ratchet 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 four Twoway valves H31, H32, the pressure hydraulic fluid port of H33, between the pump hydraulic fluid port of oil hydraulic pump D3 and fuel tank Y3, be connected to overflow relief valve, each four Twoway valves H31, H32, the return opening of H33 is received fuel tank Y3, two actuator ports of each four Twoway valvess are all received respectively two active chambers of corresponding ratchet 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 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;
As shown in Figure 2, described ratchet 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 sealed by a cylinder cap 4, main piston 2 is arranged on sliding matching mode in the inner chamber of cylinder barrel 1, 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, 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 at least one lineal shape ratchet bar 6 that is parallel to main piston slip axis;
On described cylinder barrel 1, be pivoted with at least one ratchet 5, each ratchet 5 can be switched to each ratchet bar 6 of main piston side face and engage respectively, and can be switched to each ratchet bar 6 and depart from and engage;
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 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, on sub-piston 3, there is an axis hole 31 axially connecting, axis hole 31 on left sub-chamber and the sub-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 sub-piston.
In other embodiment of the present invention, the quantity of power output unit can be also more than 2 or 3, and the ratchet self-locking oil cylinder in single power output unit and the quantity of four Twoway valvess can be also more than 2 or 3.
The working principle of the embodiment of the present invention is as follows:
When system is normally moved, each power output unit independent operating separately, the oil hydraulic pump of each power output unit by this unit provides power for each ratchet self-locking oil cylinder in this unit, controls each ratchet self-locking oil cylinder operation in this unit by each four Twoway valvess in this unit;
In the time that 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, can move normally with each ratchet self-locking oil cylinder that ensures trouble unit.
The working principle of the ratchet self-locking oil cylinder in the embodiment of the present invention is as follows:
Utilize external driver part 9(tradition oil cylinder) order about each ratchet and be switched to each ratchet bar and depart from and engage, 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, thereby promoting 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, utilizing external driver part to order about each ratchet is switched to each ratchet bar of main piston side face and engages respectively, can be by locking firm main piston, utilizing once again external driver part to order about each ratchet is switched to after each ratchet bar departs from and engages, main piston can be unlocked, after main piston unlocks, 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, thereby promoting main piston slides left, can make main piston retract left.
Claims (1)
1. a hydraulic pressure redundancy steel axial force of the supports bucking-out system for combined type ratchet self-locking, comprises at least one power output unit;
Described power output unit comprises fuel tank, oil hydraulic pump, and at least one ratchet self-locking oil cylinder, at least one four Twoway valves, the quantity of four Twoway valvess is wherein consistent with the quantity of ratchet self-locking oil cylinder and corresponding one by one, the inlet port of oil hydraulic pump is wherein received fuel tank, the pump hydraulic fluid port of oil hydraulic pump is received the pressure hydraulic fluid port of each four Twoway valvess, between the pump hydraulic fluid port of oil hydraulic pump and fuel tank, be connected to overflow relief valve, the return opening of each four Twoway valvess is received fuel tank, two actuator ports of each four Twoway valvess are all received respectively two active chambers of corresponding ratchet self-locking oil cylinder by hydraulic lock,
It is characterized in that: described power output 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 output unit is all received the pressure hydraulic fluid 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 ratchet self-locking oil cylinder comprises cylinder barrel, main piston, sub-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 active chamber around, 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 at least one lineal shape ratchet bar that is parallel to main piston slip axis;
On described cylinder barrel, be pivoted with at least one ratchet, each ratchet can be switched to each ratchet bar of main piston side face and engage respectively, and can be switched to each ratchet bar and depart from and engage;
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 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, on sub-piston, there is an axis hole axially connecting, axis hole on left sub-chamber and the sub-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 sub-piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316628.2A CN104100602B (en) | 2014-07-06 | 2014-07-06 | The hydraulic pressure redundancy steel axial force of the supports bucking-out system of combined type ratchet self-locking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316628.2A CN104100602B (en) | 2014-07-06 | 2014-07-06 | The hydraulic pressure redundancy steel axial force of the supports bucking-out system of combined type ratchet self-locking |
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| CN104100602A true CN104100602A (en) | 2014-10-15 |
| CN104100602B CN104100602B (en) | 2016-05-11 |
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| CN201410316628.2A Active CN104100602B (en) | 2014-07-06 | 2014-07-06 | The hydraulic pressure redundancy steel axial force of the supports bucking-out system of combined type ratchet self-locking |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637104A (en) * | 2020-04-22 | 2020-09-08 | 北京精密机电控制设备研究所 | Coaxial modular design's three-redundancy electro-static pressure servo mechanism |
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| US4699042A (en) * | 1985-02-23 | 1987-10-13 | Kurt Stoll | Fluid power actuator |
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| RU2446322C2 (en) * | 2010-06-23 | 2012-03-27 | Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" | Actuator |
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| CN103452918A (en) * | 2012-05-28 | 2013-12-18 | 日立建机株式会社 | System for driving working machine |
| CN103591072A (en) * | 2013-11-11 | 2014-02-19 | 徐州徐工筑路机械有限公司 | Hydraulic system of multifunctional seal paver |
| CN204082784U (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 type ratchet self-locking |
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2014
- 2014-07-06 CN CN201410316628.2A patent/CN104100602B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4699042A (en) * | 1985-02-23 | 1987-10-13 | Kurt Stoll | Fluid power actuator |
| CN101180469A (en) * | 2005-05-18 | 2008-05-14 | 株式会社小松制作所 | Hydraulic controller of construction machinery |
| RU2446322C2 (en) * | 2010-06-23 | 2012-03-27 | Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" имени С.П. Королева" | Actuator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637104A (en) * | 2020-04-22 | 2020-09-08 | 北京精密机电控制设备研究所 | Coaxial modular design's three-redundancy electro-static pressure servo mechanism |
| CN111637104B (en) * | 2020-04-22 | 2022-07-05 | 北京精密机电控制设备研究所 | Coaxial modular design's three-redundancy electro-static pressure servo mechanism |
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