CN101694221B - Signal sending device for mechanic-hydraulic servo mechanism - Google Patents
Signal sending device for mechanic-hydraulic servo mechanism Download PDFInfo
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- CN101694221B CN101694221B CN 200910093794 CN200910093794A CN101694221B CN 101694221 B CN101694221 B CN 101694221B CN 200910093794 CN200910093794 CN 200910093794 CN 200910093794 A CN200910093794 A CN 200910093794A CN 101694221 B CN101694221 B CN 101694221B
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- signal transmitter
- actuator
- control valve
- servo mechanism
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Abstract
The invention discloses a signal sending mechanism for a mechanic-hydraulic servo mechanism. The servo mechanism comprises a driving piece, a feedback piece and a control valve. The signal sending device is actuated by an actuator and connected with the control valve. A cam slot is arranged on the signal sending device, the actuator shaft of the actuator is connected to an extruding pin coupled with the cam slot, and two horizontal sections and an inclined section between the two horizontal sections are arranged on the cam slot, wherein the length of each horizontal section is larger than or equal to the stroke of the actuator, and the distance between the two horizontal sections is smaller than or equal to the stroke of a valve element of the control valve. The extruding pin performs a reciprocating motion in the two horizontal section and the tilting section located between the two horizontal section, in order to control the start and stop of the control valve. The signal sending mechanism has the function of storing signals, can better protect the servo mechanism and feed back action results of the driving piece, improve the persistent control capacity of the servo mechanism and achieve high reliability and good maneuverability.
Description
Technical field
The present invention relates to a kind of signal transmitter, specifically, relate to a kind of signal transmitter that is used for mechanical hydraulic servo mechanism.
Background technique
The utilization of servomechanism is very extensive, and automatic driving, cannon control and director from being used for boats and ships at first were generalized to the guidance of a lot of fields, particularly automatic lathe, aerial position control, guided missile and airship etc. afterwards gradually.Adopting servomechanism mainly is in order to reach following several purpose: 1. remove to control high power load with the small-power command signal.Cannon control and rudder for ship control are exactly typical example.2. do not having under the situation of mechanical connection, be positioned at output shaft at a distance, realizing the long distance Synchronous Transmission by input shaft control.3. make the output mechanical displacement accurately follow the tracks of electrical signal, like record and indicating meter etc.Servomechanism organic liquor servomechanism and electrohydraudic servomechanism commonly used at present; The sort of servomechanism no matter; Its basic building block all comprises actuator, actuator, feedback part and control valve, yet, because the signal transmitter of the actuator of at present most mechanical hydraulic servo mechanism does not have the signal storage function; Continue the drive controlling spool and during feedback signal lags, cause servomechanism to damage easily at input signal.
Summary of the invention
Technical problem to be solved by this invention is the shortcoming that does not have the signal storage function to the signal transmitter of existing mechanical hydraulic servo mechanism, and a kind of signal transmitter that is used for mechanical hydraulic servo mechanism with signal storage function is provided.
In order to solve the problems of the technologies described above, signal transmitter provided by the invention is mainly used in the servomechanism that comprises actuator, feedback part and control valve; Said servomechanism comprises actuator, feedback part and control valve; Said signal transmitter is activated by an actuator, and is connected with said control valve, also is provided with cam path on the said signal transmitter; Said actuator comprises an actuator shaft; Be connected with the protrudent pin that cooperates with said cam path on the said actuator shaft, have two sections horizontal segments on the said cam path and be arranged on two sections tilting sections between the horizontal segment, wherein; The length of said two sections horizontal segments is more than or equal to the stroke of said actuator; Distance between said two sections horizontal segments is smaller or equal to the stroke of said control valve spool, and the to-and-fro motion in two sections horizontal segments of cam path and the tilting section between two sections horizontal segments of said protrudent pin is with the keying of control control valve.
The above-mentioned signal transmitter that is used for mechanical hydraulic servo mechanism, wherein, said signal transmitter is linear signal transmitter or rotation signal transmitter.
The above-mentioned signal transmitter that is used for mechanical hydraulic servo mechanism wherein, when said signal transmitter is linear signal transmitter, is provided with an articulated section on the spool of said control valve, the piston rod of said feedback part and said articulated section are hinged.
The above-mentioned signal transmitter that is used for mechanical hydraulic servo mechanism wherein, when said signal transmitter is the rotation signal transmitter, connects a gear on it, have the tooth bar that is meshed with said gear on the piston rod of said feedback part.
Beneficial functional of the present invention is; Have two sections horizontal segments on the cam path of signal transmitter and be arranged on two sections tilting sections between the horizontal segment, and the distance between two sections horizontal segments continues the spool of drive control valve smaller or equal to the stroke of control valve spool when input signal; And the feedback part is when occur lagging behind; Utilize the horizontal segment on the cam path can realize the function of storage signal, thereby can protect servomechanism itself well, improved the Sustainable Control ability of servomechanism; Reliability is high, and mobility is good.
Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.
Description of drawings
Fig. 1 is used for the structure diagram of servomechanism for signal transmitter of the present invention;
Fig. 2 is the structural drawing of the signal transmitter of one embodiment of the invention;
Fig. 3 is the structural drawing of the signal transmitter of another embodiment of the present invention;
Fig. 4 is the signal transmitter stereogram among Fig. 3;
Fig. 5 is the partial structurtes figure of the corresponding feedback part of the signal transmitter among Fig. 3.
Wherein, reference character
100 servomechanisms
10 actuators
110 signal transmitters
111 cam paths, 1111 horizontal segments
1112 tilting sections, 1113 horizontal segments
112 gears
120 actuator shafts
13 protrudent pins
20 control valves
21 spools
211 articulated sections
30 first actuators
40 second actuators
50 feedback parts
51 piston rods, 52 tooth bars
60 first oil circuits
70 second oil circuits
Embodiment
Below in conjunction with accompanying drawing and specific embodiment technological scheme of the present invention being carried out detailed description, further understanding the object of the invention, scheme and effect, but is not the restriction as accompanying claims protection domain of the present invention.
Consult the structural drawing that Fig. 1 signal transmitter of the present invention is used for servomechanism; As shown in the figure, this servomechanism 100 comprises signal transmitter 110 (this signal transmitter is activated by an actuator 10), control valve 20, actuator (comprising first actuator 30 and second actuator 40 that is driven by first actuator 30), feedback part 50.Actuator 10 comprises the actuator shaft 120 that is connected with the spool 21 of control valve 20, and this actuator shaft 120 is connected with signal transmitter 110, and signal transmitter 110 is provided with cam path 111; Have horizontal segment 1111,1113 and tilting section 1112 (seeing Fig. 2 and Fig. 3) on the cam path 111, the length of horizontal segment 1111,1113 is all more than or equal to the stroke of actuator 10, and two horizontal segments 1111, the distance between 1113 are smaller or equal to the stroke of control valve 20 spools 21; So that signal transmitter has the function of storage signal, be connected with a protrudent pin 13 on the actuator shaft 120, this protrudent pin 13 cooperates with cam path 111; Keying with control control valve 20; First actuator 30 is connected with control valve 20 through first oil circuit 60, and second actuator 40 is connected through second oil circuit 70 with feedback part 50, when actuator 10 activates and protrudent pin 13 rolls in tilting section 1112; The valve port of control valve is opened; Pressure oil gets into first actuator 30 to drive the first actuator work, and first actuator 30 promotes 40 actions of second actuator simultaneously, and second actuator 40 drives 50 actions of feedback part; Feedback part 50 feeds back to actuator 10 with the result of the action; Protrudent pin 13 rolls in tilting section 1112 round about, and the valve port of control valve is closed, and realizes closed loop control.When input signal continues drive actuator 10; And feedback part 50 is when occurring lagging behind, and protrudent pin 12 will move to horizontal segment 1111,1113, because the length of horizontal segment 1111,1113 is all more than or equal to the stroke of actuator 10; And two horizontal segments 1111, the distance between 1113 are smaller or equal to the stroke of control valve 20 spools; The spool of control valve 20 no longer produces upper and lower displacement, and promptly signal transmitter 110 can temporarily be stored signal, avoids damaging component.
In conjunction with Fig. 1 and consult Fig. 2 and Fig. 3, the signal transmitter 110 in the servomechanism of the present invention can be linear signal transmitter (see figure 2), also can be rotation signal transmitter (Fig. 3).
When signal transmitter 110 is linear signal transmitter, on the spool 21 of control valve 20 or the connecting rod of spool 21 articulated section 211 is set, the piston rod and the articulated section 211 hinged (see figure 1)s of feedback oil cylinder 50.
Consult Fig. 4 and Fig. 5 in the lump in conjunction with Fig. 3; When signal transmitter 110 is the rotation signal transmitter; Connect a gear 112 on the signal transmitter 110; This gear 112 can be one-body molded with signal transmitter 110; Also can be fixedly connected with signal transmitter 110, have a mounting hole on the actuator shaft 120, the signal transmitter 110 that is connected as a single entity is installed in (actuator shaft 120 directly is connected with the spool 21 of control valve 20 or is connected with the spool 21 of control valve 20 through a connecting rod) on the actuator shaft 120 with gear 112 through the protrudent pin 13 that inserts mounting hole; For the movement structure with first actuator 30 feeds back to actuator 10, has tooth bar 52 on the piston rod 51 of feedback oil cylinder 50 with gear 112 engagements.The working principle that the signal transmitter of present embodiment is used for servomechanism is: as pressure, flux signal input feedback oil cylinder 50, make the piston rod 51 of feedback oil cylinder 50 produce displacement, and the tooth bar 52 that drives on the piston rod 51 is done straight line motion.When thereby driven gear 112 rotates; Straight pin 13 in the cam path 111 on the signal transmitter 110 that is connected as a single entity with gear 112 is along cam path 111 orbiting motions; Because straight pin 13 is connected with actuator shaft 120, and actuator shaft 120 is connected with the spool 21 of control valve 20, so straight pin 13 will drive spool 21 actions of control valve 20 to depart from meta; With control fluid flow; Pressure oil liquid gets into first driving oil cylinder 30, and second driving oil cylinder 40 drives feedback oil cylinder 50 to the Return-ing direction action simultaneously, and the spool 21 that straight pin 13 drives control valve 20 is got back to meta.This process makes control valve and feedback oil cylinder constitute a machine liquid closed loop control system.When input signal continues the spool 21 of drive control valve 20, and feedback oil cylinder 50 is when occurring lagging behind, and servomechanism utilizes the horizontal segment 1111,1113 on the cam path 111 to realize the signal storage functions.Working principle when signal transmitter 110 is linear signal transmitter is roughly the same therewith, just seldom does at this and gives unnecessary details.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (4)
1. signal transmitter that is used for mechanical hydraulic servo mechanism, said servomechanism comprise actuator, feedback part and control valve, and said signal transmitter is activated by an actuator; And be connected with said control valve, also be provided with cam path on the said signal transmitter, said actuator comprises an actuator shaft; Be connected with a protrudent pin on the said actuator shaft, said protrudent pin cooperates with said cam path, it is characterized in that; Have two sections horizontal segments on the said cam path and be arranged on two sections tilting sections between the horizontal segment; Wherein, the length of said two sections horizontal segments is all more than or equal to the stroke of said actuator, and the distance between said two sections horizontal segments is smaller or equal to the stroke of said control valve spool; The to-and-fro motion in two sections horizontal segments of cam path and the tilting section between two sections horizontal segments of said protrudent pin is with the keying of control control valve.
2. the signal transmitter that is used for mechanical hydraulic servo mechanism according to claim 1 is characterized in that, said signal transmitter is linear signal transmitter or rotation signal transmitter.
3. the signal transmitter that is used for mechanical hydraulic servo mechanism according to claim 2 is characterized in that, when said signal transmitter is linear signal transmitter, an articulated section is set on the spool of said control valve, and the piston rod of said feedback part and said articulated section are hinged.
4. the signal transmitter that is used for mechanical hydraulic servo mechanism according to claim 2 is characterized in that, when said signal transmitter is the rotation signal transmitter, connects a gear on it, has the tooth bar that is meshed with said gear on the piston rod of said feedback part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093794 CN101694221B (en) | 2009-09-28 | 2009-09-28 | Signal sending device for mechanic-hydraulic servo mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093794 CN101694221B (en) | 2009-09-28 | 2009-09-28 | Signal sending device for mechanic-hydraulic servo mechanism |
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| Publication Number | Publication Date |
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| CN101694221A CN101694221A (en) | 2010-04-14 |
| CN101694221B true CN101694221B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910093794 Active CN101694221B (en) | 2009-09-28 | 2009-09-28 | Signal sending device for mechanic-hydraulic servo mechanism |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102192203A (en) * | 2011-03-23 | 2011-09-21 | 宁夏银川大河数控机床有限公司 | Hydraulic reciprocating follow-up control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB935364A (en) * | 1959-12-12 | 1963-08-28 | Karl Marx Stadt Ind Werke | New or improved control means for hydraulic actuated apparatus |
| GB948320A (en) * | 1961-12-13 | 1964-01-29 | Sulzer Ag | Regulating devices incorporating servomotors operated by a pressure medium |
| JP3009105B2 (en) * | 1998-06-24 | 2000-02-14 | 東芝トランスポートエンジニアリング株式会社 | Video display device |
| JP2002349501A (en) * | 2001-05-28 | 2002-12-04 | Teijin Seiki Co Ltd | Control device of servo actuator |
-
2009
- 2009-09-28 CN CN 200910093794 patent/CN101694221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB935364A (en) * | 1959-12-12 | 1963-08-28 | Karl Marx Stadt Ind Werke | New or improved control means for hydraulic actuated apparatus |
| GB948320A (en) * | 1961-12-13 | 1964-01-29 | Sulzer Ag | Regulating devices incorporating servomotors operated by a pressure medium |
| JP3009105B2 (en) * | 1998-06-24 | 2000-02-14 | 東芝トランスポートエンジニアリング株式会社 | Video display device |
| JP2002349501A (en) * | 2001-05-28 | 2002-12-04 | Teijin Seiki Co Ltd | Control device of servo actuator |
Non-Patent Citations (1)
| Title |
|---|
| 明仁雄.机液伺服控制系统的综合仿真模型.《液压气动与密封》.2001,(第88期), * |
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| CN101694221A (en) | 2010-04-14 |
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