CN1092298C - Driving power amplified electrohydraulic converter - Google Patents
Driving power amplified electrohydraulic converter Download PDFInfo
- Publication number
- CN1092298C CN1092298C CN97108547A CN97108547A CN1092298C CN 1092298 C CN1092298 C CN 1092298C CN 97108547 A CN97108547 A CN 97108547A CN 97108547 A CN97108547 A CN 97108547A CN 1092298 C CN1092298 C CN 1092298C
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- connecting rod
- driving force
- piston
- electro
- hydraulic
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Abstract
The present invention relates to a driving force amplified electro-hydraulic converter which belongs to a new displacement output type electro-hydraulic converting element in an electro-hydraulic control system. The driving force is amplified and the output displacement quantity is guaranteed by the additional installation of a driving force amplifying mechanism in structure and the positive feedback action of the displacement of a piston follower so that the present invention has the advantages of higher anti-oil stain capability and operational reliability than those of the existing electro-hydraulic converter. The present invention is suitable for electro-hydraulic position servo systems and velocity servo systems, and has obvious functions on simplifying treatment facilities of hydraulic oil, improving the operational reliability of the systems, etc.
Description
The present invention relates to a kind of displacement output type electro-hydraulic converting element (being about to the element that electric signal is transformed to the mechanical displacement signal with certain steering force and displacement amount)---the driving force amplified electrohydraulic converter in electro-hydraulic position and the rate servo system.
Existing displacement output type electro-hydraulic converting element, adopt---control cover or the direct-connected form of guide spool (also claiming the pin plug) in machine converting member (electric signal being transformed to the parts of mechanical displacement signal) and the hydraulic pressure amplifier unit.Because of being subjected to---the restriction of machine converting member output power, although the employing Spin Control cover that has, the employing tapered guide spool that has is to reduce to control the working resistance of cover or guide spool, but its effect is very limited, and oil rub resistance ability and functional reliability are not improved yet at all.
The purpose of this invention is to provide a kind of functional reliability height, displacement output type electro-hydraulic converting element that the oil rub resistance ability is strong.
The present invention is made up of auxiliary follow up piston, body and the multiple medi-spring of---machine converting member, band control cover or guide spool, control cover or guide spool are concentric structure with auxiliary follow up piston, it is characterized in that: be provided with---machine converting member, control the driving force enlarger that cover or guide spool and auxiliary follow up piston directly or indirectly are connected or cooperate.
In the present invention, owing to be provided with and---machine converting member, control the driving force enlarger that cover or guide spool and auxiliary follow up piston are direct or cooperate, the driving force that is passed to control cover or guide spool by---machine converting member can be amplified, the power that makes drive controlling cover or guide spool is much larger than (several times, tens times even tens times)---the ouput force of machine converting member, simultaneously, introduce the positive feedback of auxiliary follow up piston displacement by the driving force enlarger to control cover or guide spool and multiple medi-spring, the output displacement that makes auxiliary follow up piston with---the displacement that the machine converting member is exported equates.Therefore, compared with prior art, under the identical situation of input electric power and output mechanical power, functional reliability height of the present invention, the oil rub resistance ability is strong, and provides reliable assurance for the power amplification multiple that further improves electro-control converter.
Fig. 1 is the structure diagram that adopts the driving force amplified electrohydraulic converter of control cover guiding auxiliary follow up piston;
Fig. 2 is the structure diagram that adopts the driving force amplified electrohydraulic converter of guide spool control auxiliary follow up piston.Among the figure, the 1st,---the machine converting member, it can be force motor or torque motor, also can be actuating motor or stepper motor or swing motor etc.; The 2nd, roller; 3 and 5 is tranverse connecting rods; 4 and 12 is vertical connecting rods; 6 and 13 is frames; The 7th, control cover or guide spool; The 8th, auxiliary follow up piston; The 9th, body; The 10th, answer medi-spring down; The 11st, the spring abutment of being hit by a bullet again down; The 14th, go up medi-spring again.
In the drawings,---the machine converting member 1 and the spring abutment 11 of being hit by a bullet again down connect firmly with body 9; Auxiliary follow up piston 8 is double-action differential pressure type (also can adopt the double-action equal pressure); Pressure oil feeds from the P mouth, and oil return is drawn by 0 mouthful; Guide spool is column type (also can be circular cone type); And upper and lower multiple medi- spring 14,10 also can adopt combined type to be loaded on upside or downside.All the citation form with prior art is identical for these.
The driving force enlarger by tranverse connecting rod 3 and 5, vertical connecting rod 4 and 12, frame 6 and 13 and roller 2 form.Roller 2 is installed in the left end of tranverse connecting rod 3, with---the output member end face contact matching of machine converting member 1; The upper end hinge of the right-hand member of tranverse connecting rod 3 or middle part and vertical connecting rod 4, middle part or right-hand member link with frame 6 accordingly; The right-hand member hinge joint of the lower end of vertical connecting rod 4 and tranverse connecting rod 5; The left end of tranverse connecting rod 5 and frame 13 hinge joints, the upper end hinge of middle part and vertical connecting rod 12; The lower end of vertical connecting rod 12 links with the top of control cover or guide spool 7; Frame 6 and 13 and the top of auxiliary follow up piston 8 connect firmly.
In the present invention, leverage by tranverse connecting rod 3 in the driving force enlarger and 5, make be delivered to control cover or guide spool 7 driving force much larger than---the ouput force of machine converting member 1, thereby greatly improved the oil rub resistance ability and the functional reliability of electro-control converter; And give the driving force enlarger with the displacement positive feedback of auxiliary follow up piston 8 by frame 6 and 13, the output displacement of auxiliary follow up piston 8 and---carry-out bit phase shift of machine converting member 1 etc.---have been guaranteed because the space relative status of 8 of each component part of driving force enlarger and auxiliary follow up pistons is constant when stablizing, thereby guaranteed that power amplification multiple of the present invention does not only reduce, but also can further improve.
To answer medi-spring in the embodiments of the invention and divide upper and lower layout, the gap that can not take other addition thereto to eliminate respectively to link the cooperation place is to the influence of its performance characteristic.
Between control cover or guide spool 7 and the tranverse connecting rod 5, also can adopt the mode transmission of drive force of contact matching among the present invention.
Driving force enlarger among the present invention also can adopt the structural type of single tranverse connecting rod;---machine converting member 1 also can be loaded on the side of body 9.
Of the present invention---between machine converting member 1 and the driving force enlarger, displacement amplifying mechanism be can set up, displacement and driving force amplified electrohydraulic converter formed.
Claims (2)
1, a kind of driving force amplified electrohydraulic converter, by---the auxiliary follow up piston [8] of machine converting member [1], band control cover or guide spool [7], multiple medi-spring [10] and [14], body [9] are formed, control cover or guide spool [7] are concentric structure with auxiliary follow up piston [8],---the machine converting member [1] and the spring abutment [11] of being hit by a bullet again down connect firmly with body [9], it is characterized in that: be provided with---machine converting member [1], control and overlap or driving force enlarger that guide spool [7] and auxiliary follow up piston [8] directly or indirectly are connected or cooperate.
2, by the described driving force amplified electrohydraulic converter of claim 1, it is characterized in that: the driving force enlarger that directly or indirectly is connected or cooperates with---machine converting member [1], control cover or guide spool [7] and auxiliary follow up piston [8], form by tranverse connecting rod [3] and [5], vertical connecting rod [4] and [12], frame [6] and [13] and roller [2]; Roller [2] is installed in the left end of tranverse connecting rod [3], with---the output member end face contact matching of machine converting member [1]; The upper end hinge of the right-hand member of tranverse connecting rod [3] or middle part and vertical connecting rod [4], middle part or right-hand member link with frame [6] accordingly; The right-hand member hinge joint of the lower end of vertical connecting rod [4] and tranverse connecting rod [5]; The left end of tranverse connecting rod [5] and frame [13] hinge joint, the upper end hinge of middle part and vertical connecting rod [12]; The lower end of vertical connecting rod [12] links with the top of control cover or guide spool [7]; Frame [6] and [13] connect firmly with the top of auxiliary follow up piston [8].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108547A CN1092298C (en) | 1997-12-09 | 1997-12-09 | Driving power amplified electrohydraulic converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97108547A CN1092298C (en) | 1997-12-09 | 1997-12-09 | Driving power amplified electrohydraulic converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1219652A CN1219652A (en) | 1999-06-16 |
| CN1092298C true CN1092298C (en) | 2002-10-09 |
Family
ID=5170517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97108547A Expired - Fee Related CN1092298C (en) | 1997-12-09 | 1997-12-09 | Driving power amplified electrohydraulic converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1092298C (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055047A (en) * | 1975-07-29 | 1977-10-25 | Kabushiki Kaisha Komatsu Seisakusho | Safety device for hydraulically driven vehicles |
| US4132384A (en) * | 1975-11-10 | 1979-01-02 | Berg John W | Auxiliary power system and apparatus |
| US4252296A (en) * | 1978-11-17 | 1981-02-24 | Berg John W | Valve |
| CN1133405A (en) * | 1995-03-26 | 1996-10-16 | 雷践仁 | Slide-valve servo, plane bar linkage feedback type electric liquid step cylinder |
| CN1217292A (en) * | 1997-08-26 | 1999-05-26 | 通用电气公司 | Opaque silica composition |
-
1997
- 1997-12-09 CN CN97108547A patent/CN1092298C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4055047A (en) * | 1975-07-29 | 1977-10-25 | Kabushiki Kaisha Komatsu Seisakusho | Safety device for hydraulically driven vehicles |
| US4132384A (en) * | 1975-11-10 | 1979-01-02 | Berg John W | Auxiliary power system and apparatus |
| US4252296A (en) * | 1978-11-17 | 1981-02-24 | Berg John W | Valve |
| CN1133405A (en) * | 1995-03-26 | 1996-10-16 | 雷践仁 | Slide-valve servo, plane bar linkage feedback type electric liquid step cylinder |
| CN1217292A (en) * | 1997-08-26 | 1999-05-26 | 通用电气公司 | Opaque silica composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1219652A (en) | 1999-06-16 |
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