CN204371816U - Fluid-transmission servo feedback mechanism - Google Patents
Fluid-transmission servo feedback mechanism Download PDFInfo
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- CN204371816U CN204371816U CN201420865452.1U CN201420865452U CN204371816U CN 204371816 U CN204371816 U CN 204371816U CN 201420865452 U CN201420865452 U CN 201420865452U CN 204371816 U CN204371816 U CN 204371816U
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- servo feedback
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- oil
- valve pocket
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Abstract
Fluid-transmission servo feedback mechanism, comprise mechanism body, wherein, mechanism body is installed on the pump housing, servo feedback bar one end that mechanism body is arranged is installed on servovalve and puts, the other end is installed on servo cylinder body, and servo feedback bar is connected with adjustment screw, and adjustment screw is for supporting servo feedback bar, servo feedback bar rotates around adjustment screw, servo valve pocket is set in and controls on spool, and arranges in arranged in dislocation, and servo valve pocket is around control Spool rotating; In addition, have left side V-type groove and right side V-type groove control spool gyration center line is symmetrical, the control oil inlet passage controlling spool and servo valve pocket composition is provided with input end and output terminal, and external pressure oil flows into, through output terminal oil return unloading through input end.The utility model is rotated along different direction by maneuvering and control spool, runs along different direction to realize servocylinder, thus realizes controlling the fixed point stop position of variable oil cylinder, and then controls pump delivery, and two-way pump oil, control accuracy is high.
Description
Technical field
The utility model relates to servo feedback mechanism technology field, particularly relates to a kind of Fluid-transmission servo feedback mechanism.
Background technique
Fluid-transmission take fluid as working medium, carries out the transmission of the conversion of energy, transmission and control, it comprise with gas be working medium Fluid-transmission and take liquid as the Fluid-transmission of working medium; And according to the difference of working principle, liquid transmission is divided into again hydraudynamic drive and hydraulic transmission; The Fluid-transmission be used in servo feedback mechanism mainly adopts hydraulic transmission, in the loop of sealing, energy transferring is carried out with the pressure energy of hydraulic oil, compared with other mechanical transmission, Electrified Transmission, hydraulic transmission possess lightweight, motional inertia is little, easily realize straight line motion, mechanical automation degree advantages of higher.But in the servo feedback mechanism used at present, spool and valve pocket are positioned at the same side, affect the connection of oil circuit, thus lose the fixed point stop position being delivered to variable oil cylinder control oil cylinder by pilot pressure oil after pilot valve, play the effect of hydraulic control pump displacement; Oil inlet passage simultaneously between spool and valve pocket arranges unreasonable, causes hydraulic system not realize servocylinder by control valve core and runs along different direction, only can one-way pump oil, and pump exports discharge capacity can not change in real time.
Model utility content
The technical problem that the utility model solves is to provide a kind of Fluid-transmission servo feedback mechanism, to solve the shortcoming in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Fluid-transmission servo feedback mechanism, comprise mechanism body, wherein, mechanism body is installed on the pump housing, servo feedback bar one end that mechanism body is arranged is installed on servovalve and puts, the other end is installed on servo cylinder body, and servo feedback bar is connected with adjustment screw, and adjustment screw is for supporting servo feedback bar, servo feedback bar can rotate around adjustment screw, servo valve pocket is set in and controls on spool, and arranges in arranged in dislocation, and servo valve pocket can around control Spool rotating; In addition, controlling, spool gyration center line is symmetrical has left side V-type groove and right side V-type groove, the control oil inlet passage controlling spool and servo valve pocket composition is provided with input end and output terminal, and external pressure oil flows into servo cylinder body, through output terminal oil return unloading through input end.
In the utility model, mechanism body is provided with the bolt hole for installing clamping bolt, mechanism body is installed on the pump housing, and fastening by clamping bolt.
In the utility model, servovalve puts the valve pocket mating groove be provided with for installing servo feedback bar bulb.
In the utility model, servo cylinder body is provided with the cylinder body mating groove for installing servo feedback bar.
In the utility model, servo feedback bar is provided with the adjustment screw mounting hole for mounting and adjusting screw.
In the utility model, servovalve puts the left oil duct and right oil duct that are provided with for transmission pressure oil, pressure oil is delivered to the control oil inlet passage input end controlling spool and servo valve pocket composition, pressure oil one tunnel is delivered to the left side of servo cylinder body through left passage and auxiliary oil way, another road is delivered on the right side of servo cylinder body through right passage and auxiliary oil way, to realize two-way pump oil.
Fluid-transmission servo feedback mechanism control method, concrete steps are as follows:
Pressure oil is delivered to the control oil inlet passage input end controlling spool and servo valve pocket composition, pressure oil one tunnel is delivered to the left side of servo cylinder body through left passage and auxiliary oil way, another road is delivered on the right side of servo cylinder body through right passage and auxiliary oil way, during the incoming pressure oil of Qie Dang mono-road, the then oil return of another road, and final through output terminal oil return unloading, when Fluid-transmission servo feedback mechanism is without external control, control spool and be in relative normally off with servo valve pocket under miscellaneous part effect, and when controlling spool and being subject to external control manipulation, itself and servo valve pocket staggered positions, connect oil circuit, left passage walked by pressure oil, promote servo cylinder body right lateral, oil now on the right side of servo cylinder body returns through right wing and is discharged by output terminal off-load, servocylinder drives servo feedback bar to rotate around adjustment screw simultaneously, and servo feedback bar stirs servo valve pocket around control Spool rotating, the oil circuit of connection is impelled to trend towards closing, servocylinder rests on current location, whole hydraulic system is in transient equiliblium, equally, right wing passage walked by pressure oil, and promote servo cylinder body left lateral, the oil now on the left of servo cylinder body returns through left and discharged by output terminal off-load, run along different direction to realize servocylinder by maneuvering and control spool, thus realize two-way pump oil.
In the utility model, the angle rotatable controlling spool is 3 ° ~ 35 °, and it is 3 ° ~ 35 ° that actual logical oil promotes servocylinder operation angle, and the motion mode that hydraulic system is in transient equiliblium is:
When controlling spool without external control, the spacing controlling left side V-type groove and the V-type groove top, right side that spool is arranged is greater than the input end channel diameter size that servovalve puts setting, therefore oil circuit is cut off, be in normally off, input end pressure oil is through the off-load of system relief valve, the output terminal channel diameter size put when servovalve is greater than input end channel diameter size, and the distance between the top of left side V-type groove and right side V-type groove is less than the output terminal channel diameter size that servovalve puts setting, namely left passage by right side V-type groove, right passage by left side V-type groove all with output in normally open, when control spool turns clockwise from reset mode, and angle of swing is when being less than 3 °, left side V-type groove and input end are from closed condition to progressively opening, and the aperture of left side V-type groove now and output terminal will reduce gradually, right side V-type groove and input end are still in closed condition, the aperture of right side V-type groove and output terminal will increase gradually, when left side V-type groove and input end aperture are less than the aperture of left side V-type groove and output terminal, input end flows through the oil of right passage directly through output terminal off-load, now be not enough at right Path Setup pressure, servo cylinder body is in zero-bit state under the effect of preloading spring power, when control spool progressively rotates, when impelling the aperture of left side V-type groove and input end to be greater than the aperture of left side V-type groove and output terminal, now at right Path Setup pressure, and when the active force of the action of hydraulic force that right passage is set up on servo cylinder body is greater than preloading spring power, servo cylinder body will be pushed operation, and this critical angle of swing controlling spool when building pressure is 3 °, now namely left side V-type groove is connected with input end and is also connected with output terminal, the pressure oil part of input end input is used for making up servocylinder system and leaks, and part is through output terminal off-load, when controlling spool and rotating through β ° (3 ° of < β ° <35 °), now on the left of moment, V-type groove is only connected with right passage, right passage builds pressure rapidly, servo cylinder body is pushed, meanwhile servo cylinder body drive servo feedback bar is stirred servo valve pocket and is turned clockwise, the aperture of left side V-type groove and input end is progressively impelled to reduce, impel the aperture of left side V-type groove and output terminal to increase gradually simultaneously, when left side V-type groove and input end aperture by pressure oil just make up system leak and output terminal off-load time, servo cylinder body is out of service, servo feedback system is now in hydraulic pressure dynamic balance state.
Beneficial effect: in the utility model, servo valve pocket is set in and controls on spool, and arrange in arranged in dislocation, when controlling spool and being subject to external control manipulation, itself and servo valve pocket staggered positions, connect oil circuit, pressure oil starts to promote servo movement of cylinder block, the control oil inlet passage controlling spool and servo valve pocket composition is provided with input end and output terminal simultaneously, rotated along different direction by maneuvering and control spool, run along different direction to realize servocylinder, thus realize controlling the fixed point stop position of variable oil cylinder, and then control pump delivery, two-way pump oil, control accuracy is high, and pump output discharge capacity changes in real time.
Accompanying drawing explanation
Fig. 1 is the assembling schematic diagram of preferred embodiment of the present utility model.
Fig. 2 is the servo feedback schematic diagram of preferred embodiment of the present utility model.
Fig. 3 is the principle schematic of preferred embodiment of the present utility model.
Fig. 4 ~ Fig. 7 is that the servo feedback system in preferred embodiment of the present utility model is in hydraulic pressure transient equiliblium time-state method.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See the Fluid-transmission servo feedback mechanism of Fig. 1 ~ Fig. 7, comprise and control spool 1, servo valve pocket 2, servo feedback bar 3, servo cylinder body 4, cylinder body mating groove 5, adjustment screw 6, valve pocket mating groove 7, clamping bolt 8, the pump housing 9, left side V-type groove 1-1, right side V-type groove 1-2, input end P, output terminal T, left passage A and right channel B.
In the present embodiment, mechanism body part is installed on the pump housing 9, and it is fastening by clamping bolt 8, servo feedback bar 3 is supported by adjustment screw 6 and can rotate around adjustment screw 6, servo feedback bar 3 one end bulb is installed in the valve pocket mating groove 7 of setting on servo valve pocket 2, the other end is installed in the cylinder body mating groove 5 of setting on servo cylinder body 4, servo valve pocket 2 is set in and controls on spool 1, and can rotate around it, control spool 1 gyration center line is symmetrical has left side V-type groove 1-1 and right side V-type groove 1-2;
External pressure oil is delivered to the input end P place of spool and valve pocket composition, pressure oil one tunnel is delivered to the left side of servo cylinder body 4 through left passage A and auxiliary oil way, another road is delivered on the right side of servo cylinder body 4 through right channel B and auxiliary oil way, during the incoming pressure oil of Qie Dang mono-road, another road then becomes oil return part around, and final through output terminal T oil return unloading, when mechanism is in relative normally off with servo valve pocket 2 without controlling spool 1 during external control under miscellaneous part effect, as shown in each phase diagram, when control spool 1 is subject to external control and servo valve pocket 2 staggered positions, connect oil circuit, left passage walked by pressure oil, promote servo cylinder body 4 right lateral, oil now on the right side of servo cylinder body 4 returns through right wing and is discharged by output terminal T off-load, servocylinder drives servo feedback bar 3 to rotate around adjustment screw 6 simultaneously, now servo feedback bar 3 will stir servo valve pocket 2 around control spool 1 rotate, the oil circuit of connection is impelled to trend towards closing, servocylinder is allowed to rest on current location, whole hydraulic system is in transient equiliblium, equally, vice versa.
Following elaboration is done in transient equiliblium described in above-mentioned, as shown in Figure 4 to 7, when controlling spool 1 without external control, because the distance between left side V-type groove 1-1 and the top of right side V-type groove 1-2 is greater than the diameter dimension of the input end P channel that servo valve pocket 2 is arranged, so oil circuit is cut off, be in normally off, input end P pressure oil is through the off-load of system relief valve, the channel diameter size that on servo valve pocket 2, output terminal T is arranged is greater than the channel diameter size of input end P, and the distance between the top of left side V-type groove 1-1 and right side V-type groove 1-2 is less than the diameter dimension of the output terminal T passage that servo valve pocket 2 is arranged, namely left passage A is by right side V-type groove 1-2, right channel B is all in normally open with output terminal T by left side V-type groove 1-1, as shown in Figure 5, example is clockwise turned to what control spool 1, when control spool 1 turns clockwise from reset mode, and angle of swing is when being less than 3 °, left side V-type groove 1-1 and input end P is from closed condition to progressively opening, and the aperture of left side V-type groove 1-1 now and output terminal T will reduce gradually, and right side V-type groove 1-2 now and input end P is still in closed condition, the aperture of right side V-type groove 1-2 and output terminal T will increase gradually, because left side V-type groove 1-1 and input end P aperture are less than the aperture of left side V-type groove 1-1 and output terminal T, therefore input end P flows through the oil of right channel B directly through output terminal T off-load, now be not enough at right channel B build-up pressure, servo cylinder body 4 is in zero-bit state under the effect of preloading spring power, when control spool 1 progressively rotates, when impelling the aperture of left side V-type groove 1-1 and input end P to be greater than the aperture of left side V-type groove 1-1 and output terminal T, now at right channel B build-up pressure, and when the active force of the action of hydraulic force that right channel B is set up on servo cylinder body 4 is greater than preloading spring power, servo cylinder body 4 will be pushed operation, and this critical angle of swing controlling spool 1 when building pressure is 3 °, now left side V-type groove 1-1 namely with input end P, output terminal T connects, the pressure oil part that input end P inputs is used for making up servo cylinder body 4 system leak, part is through output terminal T off-load, as shown in Figure 6, when controlling spool 1 and rotating through several angle β ° (this angle is greater than 3 ° and is less than 35 °), now on the left of moment, V-type groove 1-1 only connects with right channel B, right channel B builds pressure rapidly, servo cylinder body 4 is pushed, meanwhile servo cylinder body 4 drives servo feedback bar 3 to stir servo valve pocket 2 to turn clockwise, the aperture of left side V-type groove 1-1 and input end P is progressively impelled to reduce, impel the aperture of left side V-type groove 1-1 and output terminal T to increase gradually simultaneously, when left side V-type groove 1-1 and input end P aperture by pressure oil just make up system leak and output terminal T off-load time, servo cylinder body 4 is out of service, as shown in Figure 7, servo feedback system is now in hydraulic pressure dynamic balance state.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. Fluid-transmission servo feedback mechanism, comprise mechanism body, it is characterized in that, mechanism body is installed on the pump housing, servo feedback bar one end that mechanism body is arranged is installed on servovalve and puts, and the other end is installed on servo cylinder body, and servo feedback bar is connected with adjustment screw, servo valve pocket is set in and controls on spool, and arranges in arranged in dislocation; In addition, have left side V-type groove and right side V-type groove control spool gyration center line is symmetrical, the control oil inlet passage controlling spool and servo valve pocket composition is provided with input end and output terminal.
2. Fluid-transmission servo feedback mechanism according to claim 1, is characterized in that, mechanism body is provided with the bolt hole for installing clamping bolt.
3. Fluid-transmission servo feedback mechanism according to claim 1, is characterized in that, servovalve puts the valve pocket mating groove be provided with for installing servo feedback bar bulb.
4. Fluid-transmission servo feedback mechanism according to claim 1, is characterized in that, servo cylinder body is provided with the cylinder body mating groove for installing servo feedback bar.
5. Fluid-transmission servo feedback mechanism according to claim 1, is characterized in that, servo feedback bar is provided with the adjustment screw mounting hole for mounting and adjusting screw.
6. Fluid-transmission servo feedback mechanism according to claim 1, is characterized in that, servovalve puts the left oil duct and right oil duct that are provided with for transmission pressure oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865452.1U CN204371816U (en) | 2014-12-30 | 2014-12-30 | Fluid-transmission servo feedback mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420865452.1U CN204371816U (en) | 2014-12-30 | 2014-12-30 | Fluid-transmission servo feedback mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN204371816U true CN204371816U (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420865452.1U Expired - Fee Related CN204371816U (en) | 2014-12-30 | 2014-12-30 | Fluid-transmission servo feedback mechanism |
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| Country | Link |
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| CN (1) | CN204371816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533869A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Fluid drive servo feedback mechanism and control method thereof |
| CN105443488A (en) * | 2016-01-05 | 2016-03-30 | 廖冲雷 | Feedback controller for hydraulic system |
-
2014
- 2014-12-30 CN CN201420865452.1U patent/CN204371816U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533869A (en) * | 2014-12-30 | 2015-04-22 | 南京萨伯工业设计研究院有限公司 | Fluid drive servo feedback mechanism and control method thereof |
| CN105443488A (en) * | 2016-01-05 | 2016-03-30 | 廖冲雷 | Feedback controller for hydraulic system |
| CN105443488B (en) * | 2016-01-05 | 2017-05-10 | 廖冲雷 | Feedback controller for hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171230 |