CN105626605A - Single-rod highly compact micro-differential closed type servo mechanism - Google Patents

Single-rod highly compact micro-differential closed type servo mechanism Download PDF

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Publication number
CN105626605A
CN105626605A CN201410602208.0A CN201410602208A CN105626605A CN 105626605 A CN105626605 A CN 105626605A CN 201410602208 A CN201410602208 A CN 201410602208A CN 105626605 A CN105626605 A CN 105626605A
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China
Prior art keywords
fuel tank
piston
rod
support
tank shell
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CN201410602208.0A
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Chinese (zh)
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CN105626605B (en
Inventor
何俊
赵守军
曲颖
刘慧�
丁闪
王剑
王巍
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北京实验工厂
北京精密机电控制设备研究所
中国运载火箭技术研究院
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Abstract

The invention belongs to the technical field of large ship steering mechanisms, and relates to a single-rod highly compact micro-differential closed type servo mechanism which realizes a micro differential of two cavities, lowers the demand of a system for the hydraulic energy flow amount and improves energy utilization efficiency of the system. The single-rod highly compact micro-differential closed type servo mechanism comprises a servo mechanism body and two self-pressurization oil tanks (10) with the dual actions of mechanical springs and air pressure. The servo mechanism body comprises an actuator cylinder (1), a piston rod (2), a shell (3), a supporting rod (4), a rear support (5), a front support (6), a displacement sensor (7), a supporting ring A (8) and a combined seal A (9). The demand of the system for the hydraulic energy flow amount is lowered, the energy utilization efficiency of the system is improved, a compact type closed type system design is realized, the radial component force of a load can be effectively borne, cylinder scoring is avoided, and the structural compactness and anti-jamming capability of the servo mechanism are increased.

Description

A kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism
Technical field
The invention belongs to large ship helmsman technical field, be specifically related to a kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism.
Background technology
Double; two rod hydraulic servomechanism major advantages have two chamber symmetry good, and the concordance of two chamber characteristics controls to be easily achieved, and it primary disadvantage is that the axial length of servo control mechanism is longer, and the compactedness of structure is not good; The single rod hydraulic servomechanism of tradition has an advantage of compact conformation, but in the high application scenario of telescopicing performance coherence request, it controls more complicated or energy utilization rate is relatively low.
The application scenario of this patent example requires that carrying reaches 60T, and stroke reaches 600mm, and minimum axial length is less than 1200mm, it is desirable to servo control mechanism telescopicing performance concordance is good. Double; two rod structures can not meet minimum axial length requirement, therefore can only adopt single rod structure, and traditional single rod structure to meet design requirement, and will make to stretch out direction energy demand huge, and expansion performance concordance controls complicated.
Summary of the invention
The technical problem to be solved is, not enough for prior art, there is provided one to achieve two chambeies " elementary errors is moved ", reduce the system demand to hydraulic energy source flow, improve single rod height compact " elementary errors is moved " the enclosed servo control mechanism of system energy utilization ratio.
The technical solution adopted in the present invention is:
A kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism, double-acting from pressurized fuel tank including servo control mechanism main body and two mechanical springs and air pressure, described servo control mechanism main body includes: pressurized strut, piston rod, housing, support bar, rear support, front support, displacement transducer, bracing ring A and combination sealing A; Wherein support bar short end loads the main aperture of housing, it is fixed on housing by flange, the long end of support bar is loaded in piston rod, and between piston rod, it is provided with bracing ring A and combination sealing A, the two ends of displacement transducer are arranged in support bar by front support and rear support, displacement transducer is positioned at the rod end of front support side and is fixed on piston rod by a null adjustment mechanism, moves with piston rod, and piston rod is loaded on pressurized strut; ; Said two mechanical spring and air pressure is double-acting is arranged on hull outside end face from pressurized fuel tank.
Described mechanical spring and air pressure is double-acting includes from pressurized fuel tank, fuel tank shell, fuel tank piston, big spring, little spring, passage, carries on the back mother, nut, bracing ring B, combination sealing B and charging connector greatly, wherein fuel tank shell and fuel tank piston are hollow tube-shape, fuel tank piston is loaded in fuel tank shell, the space formed with fuel tank shell inwall on the right side of fuel tank piston is charging volume, in charging volume, big spring and little spring parallel connection one end are loaded in fuel tank piston, the other end peaks on fuel tank shell, the fixing end of oil surface sensor is installed on housing, mobile terminal is installed in fuel tank piston, it is supported by the form of bracing ring B and combination sealing B between fuel tank piston and fuel tank shell and seals, passage it is provided with in the middle part of fuel tank shell, fuel tank shell oral area is provided with nut, fuel tank shell is provided with carries on the back greatly mother.
The invention has the beneficial effects as follows:
1. by the mode of the built-in support bar of rodless cavity, two chamber effective area ratios are made to reach 90%, compare two chamber effective area ratios of traditional single rod structure about 70%, it is obviously improved, achieve two chambeies " elementary errors is moved ", reduce the system demand to hydraulic energy source flow, improve system energy utilization ratio;
2. the present invention " elementary errors is moved " structure makes the flexible volume change of the servo control mechanism such as the heavy load of application example, Long travel little, it is possible to changing from pressurized fuel tank adaptive system volume by miniaturization, it is achieved compact closed system designs;
3. the present invention adopts the support+sealing structure of bracing ring+series redundancy combination sealing, under the premise ensureing line seal reliability, by playing the supporting role of heavy load ability bracing ring, the monolateral gap increased between piston rod and pressurized strut reaches more than 0.6mm, auxiliary supporting role plus the built-in support bar of rodless cavity, can effectively bear the radial component of load, it is to avoid scuffing of cylinder bore;
4. linear displacement transducer is arranged in piston rod by the present invention, adds compactedness and the capacity of resisting disturbance of servo control mechanism structure;
5. the present invention adopts mechanical spring and the highly reliable design of air pressure double acting from pressurized fuel tank. From pressurized fuel tank, there is in the servo control mechanism of present example the effect in two: provide for servo control mechanism low-pressure system and meet the back pressure required; The volume change of enclosed servo control mechanism hydraulic medium when accommodation or supplementary cylinder with differential effect are flexible. From the reliable supercharging of pressurized fuel tank, the reliably working of servo control mechanism is most important, in the present invention, the pressure half provided from pressurized fuel tank is produced by the compression elasticity of mechanical spring, second half is produced by gas pressure in pressure oil tank charging volume, this kind " double; two supercharging " mode can significantly reduce the blowing pressure, improve gas tightness, improve from pressurized fuel tank reliability.
Accompanying drawing explanation
Fig. 1 is a kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism schematic diagram;
Fig. 2 be mechanical spring and air pressure double-acting from pressurized fuel tank outside drawing;
Fig. 3 be mechanical spring and air pressure double-acting from pressurized fuel tank cut-away view.
In figure: 1. pressurized strut, 2. piston rod, 3. housing, 4. support bar, 5. rear support, 6. front support, 7. displacement transducer, 8. bracing ring A, 9. combination sealing A, 10. mechanical spring and air pressure double-acting from pressurized fuel tank, 11. fuel tank shells, 12. fuel tank pistons, 13. big springs, 14. little springs, 15. passages, 16. carry on the back greatly mother, 17. nuts, 18. bracing ring B, 19. combination sealing B, 20. charging connectors.
Detailed description of the invention
Below in conjunction with drawings and Examples, one provided by the invention is introduced:
A kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism, double-acting from pressurized fuel tank 10 including servo control mechanism main body and two mechanical springs and air pressure, described servo control mechanism main body includes: pressurized strut 1, piston rod 2, housing 3, support bar 4, rear support 5, front support 6, displacement transducer 7, bracing ring A8 and combination sealing A9; Wherein support bar 4 short end loads the main aperture of housing 3, it is fixed on housing 3 by flange, the long end of support bar 4 is loaded in piston rod 2, and between piston rod 2, it is provided with bracing ring A8 and combination sealing A9, the two ends of displacement transducer 7 are arranged in support bar 4 by front support 6 and rear support 5, displacement transducer 7 is positioned at the rod end of front support side and is fixed on piston rod 2 by a null adjustment mechanism, moves with piston rod 2, and piston rod 2 is loaded on pressurized strut 1; ; Said two mechanical spring and air pressure is double-acting is arranged on housing 3 end face outside from pressurized fuel tank 10.
Described mechanical spring and air pressure is double-acting includes from pressurized fuel tank 10, fuel tank shell 11, fuel tank piston 12, big spring 13, little spring 14, passage 15, the big back of the body are female 16, nut 17, bracing ring B18, combination sealing B19 and charging connector 20, wherein fuel tank shell 11 and fuel tank piston 12 are hollow tube-shape, fuel tank piston 12 is loaded in fuel tank shell 11, the space formed with fuel tank shell 11 inwall on the right side of fuel tank piston 12 is charging volume, in charging volume, big spring 13 and little spring 14 one end in parallel are loaded in fuel tank piston 12, the other end peaks on fuel tank shell 11, oil surface sensor 21 is fixed end and is installed on housing 3, mobile terminal is installed in fuel tank piston 12, it is supported by the form of bracing ring B18 and combination sealing B19 between fuel tank piston 12 and fuel tank shell 11 and seals, passage 15 it is provided with in the middle part of fuel tank shell, fuel tank shell 11 oral area is provided with nut 17, fuel tank shell 11 is provided with the big back of the body female 16.
If Fig. 1 is that a kind of carrying reaches 60T, stroke reaches 600mm, the embodiment of single rod height compact " elementary errors is moved " the enclosed servo control mechanism of minimum axial length 1100mm, pressurized strut 1, piston rod 2, housing 3 constitute the agent structure of servo control mechanism, support bar 4 short end loads the main aperture of housing 3, positioned by the main aperture of housing 3 and seal, and by the flange on support bar 4, support bar 4 is fixed on housing 3, the long end of support bar 4 is loaded in piston rod, realizes the support of the auxiliary to piston rod 2 by bracing ring and combination sealing and hydraulic pressure has sealing; The fixing end of displacement transducer 7 is installed with in support bar 4 by front support 6 and rear support 5, and displacement transducer 7 motion bar is fixed in piston rod 2 by a null adjustment mechanism, for linear motion with piston rod 2; There is the part of linear relative movement between pressurized strut 1 and piston rod 2, piston rod 2 and support bar 4 to seal structure each through the tandem compound of such as bracing ring 8 and combination sealing 9 and carry out the support of rectilinear motion sealing and radial force, and ensure that monolateral gap is not less than 0.6mm between the two of relative motion parts, guarantee to exist and there is enough safe distances between the part of relative motion, it is to avoid scuffing of cylinder bore problem occurs. As double-acting in Fig. 2, mechanical spring and air pressure it is arranged on housing 3 from pressurized fuel tank 10.
As Fig. 3 be mechanical spring and air pressure double-acting from pressurized fuel tank embodiment. fuel tank piston 12 is loaded in fuel tank shell 11, the space formed with fuel tank shell 11 inwall on the right side of fuel tank piston 12 is charging volume, inflated to charging volume by charging connector 20, in charging volume, big spring 13 and little spring 14 parallel connection are loaded on the right side of fuel tank piston 12 and between fuel tank shell 11, the air pressure in charging volume and mechanical spring are gone into the common pressure on the right side of fuel tank piston 12, it it is hydraulic fluid chamber on the left of fuel tank piston 12, when without hydraulic oil, act on the precompression on the right side of fuel tank piston 12 to be born by the nut 17 installed with fuel tank shell 11 oral area, install and on servo control mechanism housing when fuel tank passes through the big back of the body female 16, oil pocket is by after filing provision servicing fluids force feed, the pressure of hydraulic oil can promote fuel tank piston 12 to move right, compression preliminary filling air and mechanical spring, being formed the pressure on the right side of fuel tank piston 12 can be the hydraulic oil supercharging on the left of fuel tank piston, oil surface sensor 21 is fixed end and is installed on servo control mechanism housing, and mobile terminal is loaded on fuel tank piston 12, for measuring the displacement of fuel tank piston, characterizes the volume of fuel tank hydraulic oil, the sealing of hydraulic oil and pressurization gas is there is between fuel tank piston 12 and fuel tank shell 11, it is supported by the form of such as bracing ring 18 and combination sealing 19 and seals, passage 15 is there is, when oil or gas spill each through passage 15 when occurring and revealing, it is to avoid air-fuel mixture in the middle part of fuel tank shell.

Claims (2)

1. single rod height compact " elementary errors is moved " enclosed servo control mechanism, it is characterized in that: including servo control mechanism main body and two mechanical springs and air pressure is double-acting from pressurized fuel tank (10), described servo control mechanism main body includes: pressurized strut (1), piston rod (2), housing (3), support bar (4), rear support (5), front support (6), displacement transducer (7), bracing ring A (8) and combination sealing A (9), wherein support bar (4) short end loads the main aperture of housing (3), it is fixed on housing (3) by flange, support bar (4) long end is loaded in piston rod (2), and between piston rod (2), it is provided with bracing ring A (8) and combination sealing A (9), the two ends of displacement transducer (7) are arranged in support bar (4) by front support (6) and rear support (5), displacement transducer (7) is positioned at the rod end of front support side and is fixed on piston rod (2) by a null adjustment mechanism, move with piston rod (2), piston rod (2) is loaded on pressurized strut (1), , said two mechanical spring and air pressure is double-acting is arranged on housing (3) end face outside from pressurized fuel tank (10).
2. a kind of single rod height compact " elementary errors is moved " enclosed servo control mechanism according to claim 1, it is characterized in that: described mechanical spring and air pressure is double-acting includes from pressurized fuel tank (10), fuel tank shell (11), fuel tank piston (12), big spring (13), little spring (14), passage (15), carry on the back mother (16), nut (17), bracing ring B (18), combination sealing B (19) and charging connector (20) greatly, wherein fuel tank shell (11) and fuel tank piston (12) are hollow tube-shape, fuel tank piston (12) is loaded in fuel tank shell (11), the space that fuel tank piston (12) right side and fuel tank shell (11) inwall are formed is charging volume, in charging volume, big spring (13) and little spring (14) one end in parallel are loaded in fuel tank piston (12), the other end peaks on fuel tank shell (11), the fixing end of oil surface sensor (21) is installed on housing (3), mobile terminal is installed in fuel tank piston (12), it is supported by the form of bracing ring B (18) and combination sealing B (19) and seals between fuel tank piston (12) and fuel tank shell (11), passage (15) it is provided with in the middle part of fuel tank shell, fuel tank shell (11) oral area is provided with nut (17), fuel tank shell (11) is provided with carries on the back greatly mother (16).
CN201410602208.0A 2014-10-31 2014-10-31 Single-rod high-compact micro-differential closed servo mechanism Active CN105626605B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194890A (en) * 2016-09-08 2016-12-07 北京精密机电控制设备研究所 A kind of single rod double acting symmetrical hydraulic cylinder

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WO2002004819A1 (en) * 2000-07-06 2002-01-17 Pratt & Whitney Canada Corp. Accumulator/oil tank for journal oil supply
CN2634165Y (en) * 2003-08-12 2004-08-18 西北轴承股份有限公司 Liquid/gas energy storage device
CN1526960A (en) * 2003-09-25 2004-09-08 浙江大学 Single rod equal area double acting hydraulic cylinder capable of balancing weight
CN1584350A (en) * 2004-06-04 2005-02-23 浙江大学 Single rod and rough symmetric double actuating surfaces hydraulic cylinder with internal displacement sensor
CN200961597Y (en) * 2006-08-31 2007-10-17 江苏中显机械有限公司 Electrohydraulic gyroscope
CN201339615Y (en) * 2008-12-16 2009-11-04 国营第三八八厂 Oil cylinder integrated high-level oil refilling device
CN103452920A (en) * 2012-05-29 2013-12-18 肇东市东龙节能新技术有限公司 Integrated hydraulic mechanical energy storage device
CN103821779A (en) * 2012-11-16 2014-05-28 哈尔滨飞机工业集团有限责任公司 Self-pressurization oil tank

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002004819A1 (en) * 2000-07-06 2002-01-17 Pratt & Whitney Canada Corp. Accumulator/oil tank for journal oil supply
CN2634165Y (en) * 2003-08-12 2004-08-18 西北轴承股份有限公司 Liquid/gas energy storage device
CN1526960A (en) * 2003-09-25 2004-09-08 浙江大学 Single rod equal area double acting hydraulic cylinder capable of balancing weight
CN1584350A (en) * 2004-06-04 2005-02-23 浙江大学 Single rod and rough symmetric double actuating surfaces hydraulic cylinder with internal displacement sensor
CN200961597Y (en) * 2006-08-31 2007-10-17 江苏中显机械有限公司 Electrohydraulic gyroscope
CN201339615Y (en) * 2008-12-16 2009-11-04 国营第三八八厂 Oil cylinder integrated high-level oil refilling device
CN103452920A (en) * 2012-05-29 2013-12-18 肇东市东龙节能新技术有限公司 Integrated hydraulic mechanical energy storage device
CN103821779A (en) * 2012-11-16 2014-05-28 哈尔滨飞机工业集团有限责任公司 Self-pressurization oil tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106194890A (en) * 2016-09-08 2016-12-07 北京精密机电控制设备研究所 A kind of single rod double acting symmetrical hydraulic cylinder
CN106194890B (en) * 2016-09-08 2018-11-06 北京精密机电控制设备研究所 A kind of list rod double acting symmetrical hydraulic cylinder

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