CN204493168U - The Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension - Google Patents
The Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension Download PDFInfo
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- CN204493168U CN204493168U CN201520120608.8U CN201520120608U CN204493168U CN 204493168 U CN204493168 U CN 204493168U CN 201520120608 U CN201520120608 U CN 201520120608U CN 204493168 U CN204493168 U CN 204493168U
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- motor
- electromagnetic force
- swash plate
- slipper coupling
- coupling
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Abstract
The utility model discloses the Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension, comprise plunger, swash plate, one end of this plunger is contacted with described swash surfaces by piston shoes; The back side of described swash plate is provided with boss, and this boss is wound with coil, and this coil is electrically connected with external ac power source.The utility model changes conventional axial plunger pump/motor and utilizes spring force to compress the mode of return plate and piston shoes.When pump/motor does not work, electromagnetic force is utilized tightly to be adsorbed on swash plate inclined-plane by piston shoes.When axial plunger pump/motor works, utilize electromagnetic force, hydraulic coupling and the triangular interaction of hydraulic coupling through damping hole step-down to realize static pressure and support.
Description
Technical field
The utility model is provided with axial piston pump and motor technologies field, is specifically related to the Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension.
Background technique
Axial plunger pump/motor is power/executive component indispensable in hydraulic system, its common feature is all that quality of processing that is with high content of technology, component requires high, all bear larger flow and pressure, its complex structure degree and manufacture cost are also in first of all kinds of hydraulic pump/motor.
Slipper coupling is one of large friction pair of key three of axial plunger pump/motor, Slipper coupling is the medium tache connecting swash plate and plunger, except bearing the axial force from plunger cavity high-voltage oil liquid, also bear centrifugal moment that piston shoes circumferential movement causes and rotate the friction torque produced with cylinder body.Be close on the swash plate of axial plunger pump/motor for making plunger and piston shoes, the Slipper coupling structure of existing axial piston motor/pump all adopts spring force, hydraulic coupling and forms static pressure through the post-decompression hydraulic coupling of overdamping and supports, make impacting force be a bit larger tham Separating force, ensure that plunger is pressed on swash plate inclined-plane.Generally, spring force is by the spring compression return plate on transmission shaft, and return plate compresses piston shoes and plunger produces.Therefore return plate is the requisite part of existing axial plunger pump/motor Slipper coupling, and on Slipper coupling, various power also all acts on return plate, causes the stressed complexity of return plate, and spoilage is higher.
The research of many experts and scholars shows, the wear out failure of the failure mode of axial plunger pump/motor mainly friction pair, wherein the wear out failure of especially Slipper coupling.To ensure that slip surface has certain lubricating condition on the one hand, form certain thickness hydraulic pressure oil film, prevent the dry friction between metal solid, cause severe friction and localized hyperthermia, very easily form wear out failure, Slipper coupling service behaviour and working life are sharply declined.On the other hand, must possess certain sealing between Slipper coupling, as blocked up in hydraulic pressure oil film, will leakage rate be increased, the volumetric efficiency of pump/motor reduces, thus cannot form the high pressure needed for axial plunger pump/motor.
Along with the development of hydraulic transmission technology, especially the raising of pressure and the requirement of the increase of flow to axial plunger pump/motor performance also grow with each passing day, the crucial friction pair of its three couple, usability and the reliability requirement of trunk piston set, Port Plate Pair and Slipper coupling also improve constantly.Along with the increase of flow, necessity causes the plunger diameter of axial plunger pump/motor to increase, when working in zone of high pressure, the active area of Slipper coupling and pressure stress have had increase to a certain degree, active force between piston shoes and swash plate also increases thereupon, all proposes higher requirement to the quality of Slipper coupling and return plate.
Balanced type many rows axial piston pump is a kind of novel axial plunger pump, and its swash plate has multiple inclined-plane, makes the design of its return plate comparatively complicated, very easily mutually interferes with other component.Therefore, structure innovation and optimization are carried out to the Slipper coupling of axial plunger pump/motor, especially propose a kind ofly to realize the Slipper coupling structure that balanced type many rows axial piston pump is suitable for and seem and be even more important.
Model utility content
For the problems referred to above, the utility model provides the Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension, changes conventional axial plunger pump/motor and utilizes spring force to compress the mode of return plate and piston shoes.When pump/motor does not work, electromagnetic force is utilized tightly to be adsorbed on swash plate inclined-plane by piston shoes.When axial plunger pump/motor works, utilize electromagnetic force, hydraulic coupling and the triangular interaction of hydraulic coupling through damping hole step-down to realize static pressure and support.
In order to solve the problem, the technological scheme that the utility model provides is:
A Slipper coupling for axial piston pump and motor electromagnetic force pretension, comprises plunger, swash plate, and one end of this plunger is contacted with described swash surfaces by piston shoes; The back side of described swash plate is provided with boss, and this boss is wound with coil, and this coil is electrically connected with external ac power source.
The size of electromagnetic force can be changed by the size of electric current, voltage in change coil, realize the control of Slipper coupling oil slick thickness.
Preferably, the quantity of described boss, coil is 2, and the true dip direction along described swash plate distributes.
In the plunger cavity of consideration plunger pump or motor, high low pressure is to the Different Effects of Slipper coupling static pressure support effect, respectively can be distributed the high and low nip by axial plunger pump/motor on swash plate boss, a coil, and different electric current is passed in 2 coils, thus produce different electromagnetic forces, mate the operating mode that each Slipper coupling is in zones of different.
Preferably, NULL is provided with between 2 described coils.Use NULL between two coils, avoid interfering with each other between two coil magnetic fields.
Preferably, the outside of described piston shoes is provided with annular compression ring.
Piston shoes are fixed on the annular slope of swash plate by the groove structure on pressure ring and swash plate, when axial plunger pump/motor does not work, make Slipper coupling can not depart from the annular slope of swash plate.
Preferably, described annular compression ring is fixedly connected with described swash plate.
Compared with prior art, the beneficial effects of the utility model are:
The utility model adopts electromagnetic force as pretightening force, realizes the static pressure of high-voltage oil liquid on Slipper coupling surface and supports.Being compared to traditional Slipper coupling structure, there are three advantages: one is on the basis retaining static pressure support, eliminates return plate structure, avoids the fault that axial plunger pump/motor is very common---return plate is damaged; Two is the sizes that conveniently can regulate electromagnetic force, and mates suitable electric controller, can control the oil slick thickness of Slipper coupling, works under making Slipper coupling be in optimum condition all the time; Three is adopt spring in the axial plunger pump/motor of this structure only for compressing Port Plate Pair, and does not need to compress Slipper coupling simultaneously, effectively avoids influencing each other in Slipper coupling and Port Plate Pair working procedure thus.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the free-body diagram of Slipper coupling in zone of high pressure of the utility model embodiment 1;
Fig. 3 is the free-body diagram of Slipper coupling in low pressure area of the utility model embodiment 1;
Fig. 4 is the structural representation of the utility model embodiment 2;
Embodiment
Below the utility model is described further:
Embodiment 1:
Composition graphs 1: the Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension, comprises plunger 1, swash plate 2, and one end of this plunger 1 is by piston shoes 3 and swash plate 2 surface contact; The back side of swash plate 2 is provided with boss 4, and this boss 4 is wound with coil 5, and this coil 5 is electrically connected with external ac power source.
The size of electromagnetic force can be changed by the size of electric current, voltage in change coil 5, realize the control of Slipper coupling oil slick thickness.
When axial plunger pump/motor works, first in coil 5, pass into Ac, make coil 5 produce electromagnetic force by magnetic induction, by the Slipper coupling annular slope being adsorbed on swash plate 2 tightly, the large I of adsorption force is now determined by calculating.Composition graphs 2 again, when passing in the plunger cavity of axial plunger pump/motor or get rid of high-voltage oil liquid, high-voltage oil liquid forms active force a in plunger 1 end, high-voltage oil liquid is after plunger 1 damping hole, pressure slightly declines and forms active force c, simultaneously on the inclined-plane of piston shoes 3 and swash plate 2, form oil film, thus form static pressure support, the electromagnetic force b that coupling coil 5 produces, after a power and b power and c power interact, Slipper coupling is pressed to swash plate 2 inclined-plane, when a power increases, c power increases thereupon, a power and b power sum are greater than c power all the time, thus Slipper coupling is close on swash plate 2 annular slope.Now by regulating adjustable ac power supply to change size of current, change the size of electromagnetic force b, thus change the difference between a power, b power, c power three, reach the object changing Slipper coupling oil slick thickness.Simultaneously in order to strengthen static pressure support effect, traditional piston shoes upper groove structure also can be added on piston shoes.
Composition graphs 1 and Fig. 3, when discharging fluid in plunger cavity, the pressure of fluid reduces, and now can think that piston shoes 3 pair is adsorbed on the annular slope of swash plate 2 by the electromagnetic force b produced only by coil 5.Low pressure fluid flows into Slipper coupling surface by plunger damping hole simultaneously, makes Slipper coupling be in film lubrication state all the time.
Axial plunger pump/motor comprises transmission shaft 6, cylinder body 7, thrust plate 8, one end of transmission shaft 6 is placed in cylinder body 7, the outside of transmission shaft 6 one end is provided with block slip ring 9, this block slip ring 9 is connected with cylinder body 7 by Compress Spring 10, transmission shaft 6 is by block slip ring 9, Compress Spring 10, the cylinder body 7 of axial plunger pump/motor is adjacent to thrust plate 8, now compressing bullet 10 only makes cylinder body 7 be in quick condition, ensure that the static pressure of Port Plate Pair supports, the spring be different from existing Slipper coupling also needs to compress return plate, thus the working state of the working state and Slipper coupling that effectively prevent the Port Plate Pair of axial plunger pump/motor influences each other, improve the service behaviour of axial plunger pump/motor Slipper coupling and Port Plate Pair.
The outside of piston shoes 3 is provided with annular compression ring 11.
Piston shoes 3 are fixed on the annular slope of swash plate 2 by the groove structure on pressure ring 11 and swash plate 2, when axial plunger pump/motor does not work, make piston shoes 3 pair can not depart from the annular slope of swash plate 2.
Annular compression ring 11 is fixedly connected with swash plate 2.
Embodiment 2:
Composition graphs 4: the Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension, comprises plunger 1, swash plate 2, and one end of this plunger 1 is by piston shoes 3 and swash plate 2 surface contact; The back side of swash plate 2 is provided with boss 4, and this boss 4 is wound with coil 5, and this coil 5 is electrically connected with external ac power source; The quantity of boss 4, coil 5 is 2, and the true dip direction along swash plate 2 distributes.
In the plunger cavity of consideration plunger pump or motor, high low pressure is to the Different Effects of Slipper coupling static pressure support effect, respectively can be distributed the high and low nip by axial plunger pump/motor on swash plate 2 boss 4, a coil 5, and different electric current is passed in 2 coils 5, thus produce different electromagnetic forces, mate the operating mode that each Slipper coupling is in zones of different.
NULL 12 is provided with between 2 coils 5.Use NULL 12 between two coils 5, avoid interfering with each other between two coil magnetic fields.
The outside of piston shoes 3 is provided with annular compression ring 11.
Piston shoes 3 are fixed on the annular slope of swash plate 2 by the groove structure on pressure ring 11 and swash plate 2, when axial plunger pump/motor does not work, make piston shoes 3 pair can not depart from the annular slope of swash plate 2.
Annular compression ring 11 is fixedly connected with swash plate 2.
More than show and describe basic principle of the present utility model, 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 (5)
1. axial piston pump and a motor Slipper coupling for electromagnetic force pretension, comprise plunger, swash plate, one end of this plunger is contacted with described swash surfaces by piston shoes; It is characterized in that: the back side of described swash plate is provided with boss, this boss is wound with coil, and this coil is electrically connected with external ac power source.
2. the Slipper coupling of axial piston pump according to claim 1 and motor electromagnetic force pretension, is characterized in that: the quantity of described boss, coil is 2, and the true dip direction along described swash plate distributes.
3. the Slipper coupling of axial piston pump according to claim 2 and motor electromagnetic force pretension, is characterized in that: be provided with NULL between 2 described coils.
4. the Slipper coupling of axial piston pump according to claim 1 and 2 and motor electromagnetic force pretension, is characterized in that: the outside of described piston shoes is provided with annular compression ring.
5. the Slipper coupling of axial piston pump according to claim 4 and motor electromagnetic force pretension, is characterized in that: described annular compression ring is fixedly connected with described swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520120608.8U CN204493168U (en) | 2015-02-28 | 2015-02-28 | The Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520120608.8U CN204493168U (en) | 2015-02-28 | 2015-02-28 | The Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension |
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| CN204493168U true CN204493168U (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520120608.8U Expired - Fee Related CN204493168U (en) | 2015-02-28 | 2015-02-28 | The Slipper coupling of a kind of axial piston pump and motor electromagnetic force pretension |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675691A (en) * | 2015-02-28 | 2015-06-03 | 安徽理工大学 | Slipper pair pre-tightened by electromagnetic force for axial plunger pump and motor |
| WO2019090972A1 (en) * | 2017-11-10 | 2019-05-16 | 安徽理工大学 | Magnetic sliding shoe pair for axial plunger pump and motor and control method |
| US10371130B2 (en) | 2017-11-10 | 2019-08-06 | Anhui University of Science and Technology | Magnetic piston shoe pair for axial piston pump and motor and control method thereof |
| CN110469476A (en) * | 2019-09-04 | 2019-11-19 | 燕山大学 | A kind of axial plunger pump of permanent magnet swash plate and piston shoes |
| CN110753792A (en) * | 2017-07-28 | 2020-02-04 | 川崎重工业株式会社 | Fault diagnosis device, pump unit provided with same, and fault diagnosis method |
| CN114382672A (en) * | 2021-10-28 | 2022-04-22 | 中国航发西安动力控制科技有限公司 | Swash plate piston shoe pressing structure in hydraulic plunger pump and plunger pump with swash plate piston shoe pressing structure |
-
2015
- 2015-02-28 CN CN201520120608.8U patent/CN204493168U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675691A (en) * | 2015-02-28 | 2015-06-03 | 安徽理工大学 | Slipper pair pre-tightened by electromagnetic force for axial plunger pump and motor |
| CN110753792A (en) * | 2017-07-28 | 2020-02-04 | 川崎重工业株式会社 | Fault diagnosis device, pump unit provided with same, and fault diagnosis method |
| CN110753792B (en) * | 2017-07-28 | 2021-08-06 | 川崎重工业株式会社 | Fault diagnosis device, pump unit provided with same, and fault diagnosis method |
| WO2019090972A1 (en) * | 2017-11-10 | 2019-05-16 | 安徽理工大学 | Magnetic sliding shoe pair for axial plunger pump and motor and control method |
| US10371130B2 (en) | 2017-11-10 | 2019-08-06 | Anhui University of Science and Technology | Magnetic piston shoe pair for axial piston pump and motor and control method thereof |
| CN110469476A (en) * | 2019-09-04 | 2019-11-19 | 燕山大学 | A kind of axial plunger pump of permanent magnet swash plate and piston shoes |
| CN114382672A (en) * | 2021-10-28 | 2022-04-22 | 中国航发西安动力控制科技有限公司 | Swash plate piston shoe pressing structure in hydraulic plunger pump and plunger pump with swash plate piston shoe pressing structure |
| CN114382672B (en) * | 2021-10-28 | 2023-09-22 | 中国航发西安动力控制科技有限公司 | Swash plate sliding shoe compression structure in hydraulic plunger pump and plunger pump with same |
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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: 20150722 Termination date: 20200228 |