CN202579411U - Electro-hydraulic proportional valve capable of repairing clamping breakdown through utilization of electromagnetic attraction force - Google Patents
Electro-hydraulic proportional valve capable of repairing clamping breakdown through utilization of electromagnetic attraction force Download PDFInfo
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- CN202579411U CN202579411U CN 201220250827 CN201220250827U CN202579411U CN 202579411 U CN202579411 U CN 202579411U CN 201220250827 CN201220250827 CN 201220250827 CN 201220250827 U CN201220250827 U CN 201220250827U CN 202579411 U CN202579411 U CN 202579411U
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Abstract
The utility model relates to an electro-hydraulic proportional valve capable of repairing a clamping breakdown through utilization of electromagnetic attraction force. The electro-hydraulic proportional valve comprises a valve core and a valve body with a valve cavity. The valve body comprises a special valve wall. The special valve wall comprises an upper valve-wall main wall, a lower valve-wall main wall, a left valve-wall main wall and a right valve-wall main wall, four magnetism separating areas and four sets of solenoid coils. The four magnetism separating areas separating the four valve-wall main walls from each other are respectively disposed at four top corners of the valve wall. The solenoid coils of four sets of area magnetic inductive frames are respectively disposed on the valve-wall main walls in sleeved mode. The valve core and the valve-wall main walls are respectively made of magnetic alloy. The magnetism separating areas are respectively made of non-magnetic alloy. The electro-hydraulic proportional valve further comprises a power control device which is respectively in electrical connection with the four sets of the solenoid coils of the special valve wall and respectively control power-on and power-off of the solenoid coils. The electro-hydraulic proportional valve can conveniently repair the clamping breakdown caused by pollution and unbalanced radial force through adoption of the electromagnetic attraction force.
Description
Technical field
The utility model relates to a kind of hydrovalve, particularly a kind of electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault.
Background technique
Slide-valve gear is to adopt maximum a kind of structural type in all kinds of hydrovalves, and guiding valve is made up of spool these two critical pieces of valve body with the band valve pocket, and through changing the position of spool in the valve pocket of valve body, guiding valve can be realized the change and the break-make of direction of flow.Guiding valve chucking fault is a common faults and one of failure mode the most in the hydraulic system, generally can be divided into hydraulic lock and machinery chucking two big classes.Unbalanced pressure causes because of machining causes how much proterties sum of errors of spool coaxiality error to produce radially in hydraulic lock; The machinery chucking is then deposited gradually in the guiding valve gap by the on-the-spot particulate pollutant of operation and causes.The chucking fault has the differentiation of slight and severe.
In the existing technology; The method of getting rid of above-mentioned chucking fault mainly contains two kinds: the one, in processing and on-the-spot running, take measures; Reduce the probability that breaks down, rationally offer balancing slit, strict processing and assembling quality etc. on fine filter, the spool such as in system, installing; Another kind method is exactly that online in real time fault diagnosis and fault are got rid of, and at present, does not still have sensitive, online in real time fault diagnosis, removing device accurately, though similar device complex structure, with high costs is perhaps arranged, fault eliminating poor effect.
HERION company provides a kind of solution, manufactures and designs a kind of solenoid directional control valve, except its work spool, also has " hammer " spool.During proper functioning, " hammer " spool is failure to actuate, and when spool can't playback because of chucking, " hammer " spool knocked the work spool under the spring force effect, make its return.The narrow limitation of this scheme is, owing to be to lean on that the compressed machinery spring obtains to knock energy when powering on, " hammer " spool is hammer action for once, and is unidirectional, can't guarantee the fault eliminating, also can't be applied to servo, proportional valve control system.
In view of this, the inventor combines to be engaged in hydrovalve area research work experience for many years, and the defective of above-mentioned technical field is studied for a long period of time, and this case produces thus.
The model utility content
The purpose of the utility model is to provide a kind of electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault simple in structure, with low cost; Can utilize the electromagnetic force reparation by polluting the chucking fault that causes with unbalanced pressure radially easily; Easy and simple to handle, using effect is good.
To achieve these goals, the technological scheme of the utility model is following:
A kind of electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault comprises spool and the valve body of being with valve pocket.Wherein valve body comprises special valve wall, and special valve wall comprises up and down four valve wall master walls, valve wall master wall is separated and is divided into four of four drift angles of valve wall at a distance from tapes and four groups of band magnetic conduction frameworks and be enclosed within four solenoids on the valve wall master wall respectively; Spool and valve wall master wall are processed by the magnet case alloy, are processed by magnet case alloy not at a distance from tape.Also comprise the power control that is electrically connected, can controls respectively its break-make electricity with four groups of solenoids of special valve wall.
Further, said power control can control respectively four solenoids energising numbers, in proper order, size of current, current"on"time and frequency.Thereby further improve the repairing effect of electromagnetic attraction in the present technique scheme, and operation is easier, using effect is better.
Further, said spool and valve wall master wall are processed by high magnetic conductance alloy 1J89, said at a distance from tape by YG8 not magnetic conduction import wolfram steel process.Thereby further improve the repairing effect of electromagnetic attraction in the present technique scheme, and using effect is better.
Adopt the working principle of present technique scheme reparation machinery chucking fault following:
When electro-hydraulic proportional valve produces machinery chucking fault; With the approaching contamination particle of the gap size of valve body spool because of valve body and uneven big the contamination particle of formation that be detained of spool face; Be trapped between large particle than granule simultaneously; Constitute the dirty grain of dynamic growth cake, both actings in conjunction form common pollution chucking.Spool chucking fault is mainly two kinds of forms of expression, or spool mainly is stuck in some sides of valve pocket, or spool mainly is stuck in certain two side (as above these more serious bi-side of principle analysis generally are adjacent) of valve pocket.We can detect, judge through corresponding device thereof or manual work to this.
When judging that spool mainly is stuck in some sides of valve pocket; The then energising of the solenoid on the valve wall master wall of this side opposite side; Make this valve wall master's wall and spool be magnetized; (after the energising of the solenoid on the valve wall master wall, valve wall master wall just is equivalent to the iron core in the electromagnet, and spool just is equivalent to the armature in the electromagnet to become opposite polarity two blocks of magnet; Below be the work of electromagnet principle: iron core and armature are magnetized in the electromagnet, become opposite polarity two blocks of magnet, will produce electromagnetic attraction between them.When suction during greater than the reaction force of spring, armature begins towards direction motion unshakable in one's determination.When the electric current in the coil during less than certain certain value or interruption of power supply, electromagnetic attraction is less than the reaction force of spring, and armature will return original release position under the effect of reaction force), produce electromagnetic attraction between them.When suction during greater than the active force of machinery chucking, spool begins towards the motion of opposite side direction, and gripping orientation is eased.Consider that the relative both sides of spool all produce the situation of polluting chucking in various degree, behind the energising of the solenoid on side valve wall master wall certain hour, this solenoid outage; And make subsequently with this side valve wall master wall opposite valve wall master wall on the same time of solenoid energising; So circulate repeatedly, spool is under the effect of electromagnetic force, along the radially significantly vibration of valve pocket; Make a big contamination particle and a dirty grain cake receive the mechanical vibration effect and fragmentation is decomposed into granule and is melted in the hydraulic oil; And with fluid circulation by band from slide-valve gear, thereby reach cleaning fluid and the purpose of removing the chucking fault, and finally make spool can rest on place, valve pocket medial axis.
When judging that spool mainly is stuck in certain two side (is adjacent) of valve pocket as above-mentioned these more serious bi-side; The then energising of the solenoid on the valve wall master wall of these opposite both sides, bi-side; Make corresponding valve wall master's wall and spool be magnetized, become opposite polarity two blocks of magnet, (principle that valve wall master's wall and spool are magnetized is with above-mentioned to produce electromagnetic attraction between them; In addition; The centerline direction that the synthetic electromagnetic field direction that produces in two side valve walls energising magnetization back is an angle, just the direction of 45 degree also is the direction of 45 degree to the polar orientation after the spool magnetization).When suction during greater than the active force of machinery chucking, spool begins towards the diagonal motion, and gripping orientation is eased.All produce the situation of polluting chucking in various degree around considering spool; Behind the energising of the solenoid on two side valve wall master walls certain hour; Let solenoid outage of this both sides, and make subsequently with this two side valves wall master wall opposite two side valve wall master walls on the same time of solenoid energising, so circulation is repeatedly; Spool is under the effect of electromagnetic force; Along the radially significantly vibration of valve pocket, make a big contamination particle and a dirty grain cake receive the mechanical vibration effect and fragmentation is decomposed into granule and is melted in the hydraulic oil, and with the fluid circulation by band from slide-valve gear; Thereby reach cleaning fluid and the purpose of removing the chucking fault, and finally make spool can rest on place, valve pocket medial axis.
Adopt the working principle of present technique scheme reparation hydraulic lock fault following:
The reason that electro-hydraulic proportional valve produces the hydraulic lock fault is to produce radially unbalanced pressure because of machining causes how much proterties sum of errors of spool coaxiality error, makes spool press to the valve body wall, finally produces hydraulic lock.Spool chucking fault is mainly two kinds of forms of expression, or spool mainly is stuck in some sides of valve pocket, or spool mainly is stuck in certain two side (as above these more serious bi-side of principle analysis generally are adjacent) of valve pocket.We can detect, judge through corresponding device thereof or manual work to this.
When judging that spool mainly is stuck in some sides of valve pocket; The then energising of the solenoid on the valve wall master wall of this side opposite side; Make this valve wall master's wall and spool be magnetized; Become opposite polarity two blocks of magnet, produce electromagnetic attraction (principle that valve wall master's wall and spool are magnetized is with aforementioned) between them.When suction during greater than the active force of hydraulic lock, spool begins towards the motion of opposite side direction, and gripping orientation is eased.Behind the solenoid on side valve wall master wall energising certain hour, let this solenoid outage, and make subsequently with this side valve wall master wall opposite valve wall master wall on the same time of solenoid energising; So circulate repeatedly, spool is under the effect of electromagnetic force, along the radially significantly vibration of valve pocket; Making radially, unbalanced pressure is able to alleviate or eliminate; Thereby spool is got back near the medial axis of valve pocket, and the friction factor between valve interior surface and the spool significantly reduces, and avoids spool to be crushed on the valve interior wall and can't move; Reach the purpose of removing hydraulic lock, and finally make spool can rest on place, valve pocket medial axis.
When judging that spool mainly is stuck in certain two side (it generally is adjacent as above analyzing these more serious bi-side) of valve pocket; The then energising of the solenoid on the valve wall master wall of these opposite both sides, bi-side; Make this valve wall master's wall and spool be magnetized; Become opposite polarity two blocks of magnet, produce between them electromagnetic attraction (valve wall master's wall and spool is magnetized and the principle of polar orientation with aforementioned).When suction during greater than the active force of hydraulic lock, spool begins towards the diagonal motion, and gripping orientation is eased.Behind the solenoid on two side valve wall master walls energising certain hour, let this both sides solenoid outage, and make subsequently with this two side valves wall master wall opposite two side valve wall master walls on the same time of solenoid energising; So circulate repeatedly, spool is under the effect of electromagnetic force, along the radially significantly vibration of valve pocket; Making radially, unbalanced pressure is able to alleviate or eliminate; Thereby spool is got back near the medial axis of valve pocket, and the friction factor between valve interior surface and the spool significantly reduces, and avoids spool to be crushed on the valve interior wall and can't move; Reach the purpose of removing hydraulic lock, and finally make spool can rest on place, valve pocket medial axis.
When polluting the chucking fault and take place, spool generally can depart from position, valve pocket medial axis, and is in order to improve the effect of electromagnetic force de-chucking, smaller near the electrical current on the solenoid on the valve wall of that side of spool or those both sides.Four separated tapes are mainly used in the Magnetic field distribution when improving adverse, weaken the repulsion between same pole.
The utility model is compared following advantage and effect with existing technology: 1, utilize the bi-directional electromagnetic suction of electromagnet that spool is radially vibrated, thereby pulverize big contamination particle and dirty grain cake, the chucking fault decontaminates; 2, utilize the bi-directional electromagnetic suction of electromagnet to alleviate or eliminate radially unbalanced pressure, thereby reduce the friction factor between valve interior surface and the spool and spool is returned near the medial axis, get rid of the hydraulic lock fault; 3, the direction of chucking is radially, and the utility model is through radial electromagnetic force effect de-chucking fault, and its effect is better than the chucking solution through the axial vibration mode; 4, in the present technique scheme, the final equinoctial point that electromagnetic force can reach just is the nominal situation of Proportional valve, and promptly therefore the medial axis coincidence status of spool and valve pocket adopts the present technique scheme finally can make spool can rest on place, valve pocket medial axis; 5, adopt the present technique scheme, simple in structure, with low cost, easy and simple to handle, using effect is good.
In order further to explain the technological scheme of the utility model, the utility model is done further detailed description below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is a common electrical liquid proportional valve arrangement schematic representation;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is the sectional drawing of the utility model along vertical valve core direction of axis line.
Embodiment
Below in conjunction with the enforcement further detailed description of accompanying drawing to the utility model.
The structure of common electro-hydraulic proportional valve is as shown in Figure 1, comprises spool 1 ' and valve body, and valve body comprises valve pocket 2 ' and valve wall 3 '.As for miscellaneous part, generally also comprise proportional amplifier 5 ', proportion electro-magnet 4 '.Proportion electro-magnet 4 ' also can be single, replaces with Returnning spring at the other end.Proportion electro-magnet matches with spool, passing ratio solenoid actuated spool.The moving iron core of general proportion electro-magnet 4 ' heads on spool 1 '.Through changing the position of spool 1 ' in the valve pocket of valve body, Proportional valve can be realized the change and the break-make of direction of flow.Above-mentioned is existing technology, repeats no more here.
To shown in Figure 3, is the preferred embodiment of the utility model like Fig. 2.
A kind of electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault comprises spool 41 and the valve body 40 of being with valve pocket 42.Wherein valve body 40 comprises special valve wall 43; Special valve wall comprises up and down four valve wall master walls 431, valve wall master wall is separated and is divided into four of four drift angles of valve wall at a distance from tapes 432 and four groups of band magnetic conduction frameworks and be enclosed within four solenoids 433 on the valve wall master wall, the i.e. solenoids of belt coil respectively.Spool and valve wall master wall are processed by the magnet case alloy, are processed by magnet case alloy not at a distance from tape.In the present embodiment, above-mentioned electro-hydraulic proportional valve also is provided with proportion electro-magnet 30, and this is an existing technology, so do not give unnecessary details.
Also comprise the power control that is electrically connected, can controls respectively its break-make electricity with four groups of solenoids 433 of special valve wall.Because this power control mainly has been the function of four groups of solenoid break-make electricity of control; Though it is applied to combine to realize electromagnetic attraction control here with solenoid and then repair the chucking fault to be the inventor's innovation; But the device of realizing this function belongs to common technique at electric field, just repeats no more here.In order to realize better repairing effect, in the present embodiment, power control can control respectively four groups of solenoids 433 energising numbers, in proper order, size of current, current"on"time and frequency.Thereby further improve the repairing effect of electromagnetic attraction in the present technique scheme, and operation is easier, using effect is better.
In the present embodiment, electro-hydraulic proportional valve is as shown in Figure 3 along the sectional drawing of vertical valve core direction of axis line.The 41st, spool is processed by high hardness, high magnetic conductance alloy 1J89; The 42nd, valve pocket; The 432nd, by YG8 not magnetic conduction import wolfram steel process at a distance from tape, totally four, on four drift angles of rectangular cross-section, its size is as shown in the figure respectively; The 431st, by the valve wall master wall that high hardness, high magnetic conductance alloy 1J89 process, totally four, formed valve body valve wall jointly at a distance from tape separation and four separated tapes; 433 is solenoids of four groups of band magnetic conduction frameworks, and promptly the solenoid of belt coil is enclosed within respectively on four valve wall master walls 431.Thereby further improve the repairing effect of electromagnetic attraction in the present technique scheme, and using effect is better.
Machinery chucking fault is following from the working procedure of getting rid of (side chucking):
When chucking fault when being detected (as through intelligent controller 10 and detection device 50; Perhaps artificial; Detect, judge); Suppose that spool mainly is stuck in the A side of valve pocket (left side shown in Figure 3 promptly marks 431 and 432 sides), then this side opposite side is B side (right side shown in Figure 3).Then 433 energisings of the solenoid on the B side valves wall master wall, the valve wall master wall 431 that makes this coil twine is magnetized with spool 41, becomes opposite polarity two blocks of magnet, produces electromagnetic attraction between them.When suction during greater than the active force of machinery chucking, spool begins towards the motion of B side direction, and gripping orientation is eased.The AB both sides of considering spool all produce the situation of polluting chucking in various degree, behind the 433 energising certain hours of the solenoid on the B side valves wall master wall, and this solenoid outage; And make the same time of solenoid 433 energising on the A side valves wall master wall 431 subsequently (as preferably; Electrical current on the A side solenoid little than on the B side solenoid, thereby improve the effect of electromagnetic attraction de-chucking), so circulation is repeatedly; Spool 41 is under the effect of electromagnetic force; Radially (A is to B) along valve pocket 42 significantly vibrates, and makes a big contamination particle and a dirty grain cake receive the mechanical vibration effect and fragmentation is decomposed into granule and is melted in the hydraulic oil, and with the fluid circulation by band from slide-valve gear; Thereby reach cleaning fluid and the purpose of removing the chucking fault, and finally make spool can rest on place, valve pocket medial axis.
The hydraulic lock fault is following from the working procedure of getting rid of (side chucking):
When chucking fault when being detected (as through intelligent controller 10 and detection device 50; Perhaps artificial; Detect, judge); Suppose that spool mainly is stuck in the A side of valve pocket (left side shown in Figure 3 promptly marks 431 and 432 sides), then this side opposite side is B side (right side shown in Figure 3).Then 433 energisings of the solenoid on the B side valves wall master wall, the valve wall master wall 431 that makes this coil twine is magnetized with spool 41, becomes opposite polarity two blocks of magnet, produces electromagnetic attraction between them.When suction during greater than the active force of hydraulic lock, spool begins towards the motion of B side direction, and gripping orientation is eased.Behind the solenoid on the B side valves wall master wall 433 energising certain hours, this solenoid outage, and make the same time of solenoid 433 energisings on the A side valves wall master wall 431 subsequently (as preferably; Electrical current on the A side solenoid little than on the B side solenoid, thereby improve the effect of electromagnetic attraction de-chucking), so circulation is repeatedly; Spool 41 is under the effect of electromagnetic force; Radially (A is to B) along valve pocket 42 significantly vibrates, and makes radially that unbalanced pressure is able to alleviate or eliminate, thereby spool is got back near the medial axis of valve pocket; Friction factor between valve interior surface and the spool significantly reduces; Avoiding spool to be crushed on the valve interior wall can't move, and reaches the purpose of removing hydraulic lock, and finally makes spool can rest on place, valve pocket medial axis.
As aforementioned, the direction of chucking is radially, and the utility model is through radial electromagnetic force effect de-chucking fault, and its effect is better than the chucking solution through the axial vibration mode; Simultaneously, adopt the present technique scheme, simple in structure, with low cost, easy and simple to handle, using effect is good.
The specific embodiment that the above is merely the utility model is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.
Claims (3)
1. electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault; The valve body that comprises spool and band valve pocket; It is characterized in that: said valve body comprises special valve wall, and special valve wall comprises up and down four valve wall master walls, valve wall master wall is separated and is divided into four of four drift angles of valve wall at a distance from tapes and four groups of band magnetic conduction frameworks and be enclosed within four solenoids on the valve wall master wall respectively; Spool and valve wall master wall are processed by the magnet case alloy, are processed by magnet case alloy not at a distance from tape; Also comprise the power control that is electrically connected, can controls respectively its break-make electricity with four groups of solenoids of special valve wall.
2. a kind of electro-hydraulic proportional valve that utilizes electromagnetic attraction reparation chucking fault as claimed in claim 1 is characterized in that: said power control can control respectively four solenoids energising numbers, in proper order, size of current, current"on"time and frequency.
3. according to claim 1 or claim 2 a kind of utilizes the electro-hydraulic proportional valve of electromagnetic attraction reparation chucking fault, and it is characterized in that: said spool and valve wall master wall are processed by high hardness, high magnetic conductance alloy 1J89, said separated tape by YG8 not magnetic conduction import wolfram steel process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250827 CN202579411U (en) | 2012-05-31 | 2012-05-31 | Electro-hydraulic proportional valve capable of repairing clamping breakdown through utilization of electromagnetic attraction force |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220250827 CN202579411U (en) | 2012-05-31 | 2012-05-31 | Electro-hydraulic proportional valve capable of repairing clamping breakdown through utilization of electromagnetic attraction force |
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| CN202579411U true CN202579411U (en) | 2012-12-05 |
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| CN 201220250827 Expired - Fee Related CN202579411U (en) | 2012-05-31 | 2012-05-31 | Electro-hydraulic proportional valve capable of repairing clamping breakdown through utilization of electromagnetic attraction force |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720713A (en) * | 2012-05-31 | 2012-10-10 | 绍兴文理学院 | Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force |
-
2012
- 2012-05-31 CN CN 201220250827 patent/CN202579411U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720713A (en) * | 2012-05-31 | 2012-10-10 | 绍兴文理学院 | Electrohydraulic proportioning valve capable of correcting chucking faults by utilizing electromagnetic attraction force |
| CN102720713B (en) * | 2012-05-31 | 2016-02-03 | 绍兴文理学院 | A kind of electro-hydraulic proportional valve utilizing electromagnetic attraction reparation to clamp fault |
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| 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 |
Granted publication date: 20121205 Termination date: 20150531 |
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| EXPY | Termination of patent right or utility model |