CN203081669U - Half shaft type pure water hydraulic axial plunger pump - Google Patents
Half shaft type pure water hydraulic axial plunger pump Download PDFInfo
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- CN203081669U CN203081669U CN 201220722007 CN201220722007U CN203081669U CN 203081669 U CN203081669 U CN 203081669U CN 201220722007 CN201220722007 CN 201220722007 CN 201220722007 U CN201220722007 U CN 201220722007U CN 203081669 U CN203081669 U CN 203081669U
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Abstract
The utility model relates to a half shaft type pure water hydraulic axial plunger pump. According to the half shaft type pure water hydraulic axial plunger pump, a half shaft type structure that a sliding bearing supports a cylinder body is adopted, wherein a front bearing supports an input shaft, and a rear bearing is a sliding bearing inside a cylinder and used for supporting the cylinder body. According to reasonable bearing arrangement, stress of bearings is reduced, and an overturning moment of a thrust plate is balanced. Distributed return stroke springs respectively act on the cylinder body and a floating liner plate, so not only is sealing of a slipper pair and a port plate pair guaranteed, but also abrasion loss of a slipper and the thrust plate can be automatically compensated. The thrust plate is fixed on a rear end cover and is sealed through a seal ring, so leakage of the reverse side of the thrust plate is avoided. According to a plunger pair, a clearance self-compensating sealing structure is adopted, so leakage of the plunger pair is reduced, and anti-pollution capacity of the pump is improved. Fresh water or seawater after being filtered is used as a working medium of the pump, all friction pairs are in whole water lubrication, and power density is large. The half shaft type pure water hydraulic axial plunger pump can be used for industrial cleaning, seawater desalination, underwater operation tools and the like, and is wide in application prospect.
Description
Technical field
The utility model relates to a kind of semiaxis formula pure water hydraulics axial piston pump, can be used as dynamical element and is applied to belong to the Fluid Transmission and Control technical field in the pure water hydraulics transmission system.
Background technique
The pure water hydraulics technology is with a natural fresh water or seawater proxy mineral oil new technology as the hydraulic work system medium.In recent years, based on the pay attention to day by day of safety and sanitary, energy saving, protection environment and ocean development, the pure water hydraulics Study on Technology has become a big forward position research topic of international hydraulic pressure circle.Compare with the hydraulic transmission of using the other types medium, the pure water hydraulics transmission has the following advantages:
(1) do not burn, pollution-free, aboundresources and cheap;
(2) compression loss of system is little, response is fast and dynamic performance is good;
(3) specific heat and thermal conductivity are big, system's temperature rise is low;
(4) viscosity linear loss and local losses low, system is little;
(5) system maintenance convenience, easy cleaning, maintenance cost are low.
The water hydraulic pump is the core of pure water hydraulics transmission system, and using more water hydraulic pump at present has centrifugal pump, two plunger pumps and treble ram pump.Centrifugal pump has shortcomings such as pressure is low, and noise is big, can not satisfy the requirement of pure water hydraulics transmission system pumping source fully; Two plunger pumps and treble ram pump have shortcomings such as flow is little, bulky, and vibration noise is big, can not be widely used in various pure water hydraulics transmission systems.Swash plate plunger pump and bent axis type axial piston pump have high-pressure high-flow, and volume is little, and be easy to maintenance, can satisfy advantage such as noise and vibration requirement and enjoy the countries in the world scholar to pay close attention to.Developed country has developed comparatively ripe product, and has captured quite a few market.
The Danfoss series pump of Denmark, the TWHC of Britain and Fenner series pump generally adopt inclined disc type dish distributing construction, all the marketization.Yet these several pumps to the filter precision of working medium require too high (be generally≤10um), contamination resistance is relatively poor, the practicability limitation.
China also is in the development stage in this technical field, and the model machine of developing is ripe not enough, still can not commercialization.Chinese patent (patent No.: ZL 200310122910.9) discloses a kind of pure water hydraulics axial piston pump or motor of fully water lubricating valve plate distribution, this pump adopts the cylinder outer bearing to support cylinder body, trunk piston set adopts clearance seal, and difficulty of processing is big, and contamination resistance is relatively poor.
Chinese patent (patent No.: ZL 201110077940.7) discloses a kind of pure water hydraulics shaft type sphere fluid-distributing axial plunger pump, and this pump adopts former and later two sliding bearing supports main shaft, sphere distributing construction.From the structural drawing of announcing, front and back bearings all is in the airtight cavity volume, can not form circulation with the water in the housing chamber, and front and back bearings all can not get effective lubricating, cooling.Certainly will cause the heavy wear of front and back bearings to lose efficacy in the working procedure of pump, and the secondary difficulty of processing of sphere flow is bigger, practicability is not strong.
Chinese patent (patent No.: ZL 201010103656.8) discloses a kind of diclinic moushroom valve ported axial plunger formula water hydraulic canned motorpump, rotor drives the cylinder body rotation during this pump work, flow-distributing valve rotates in cylinder body thereupon, and the secondary rotation of flow causes the pump suction not enough easily.Therefore this kind pump suction capacity is relatively poor, and rotating speed is difficult to improve.
Summary of the invention
Big in order to overcome existing pure water hydraulics plunger pump difficulty of processing, contamination resistance is poor, and shortcomings such as the easy inefficacy of sliding bearing are pressed transmission system for pure water the high pressure water of enough pressure, flow is provided.The utility model provides a kind of semiaxis formula pure water hydraulics axial piston pump, by reasonable structural design, has improved the lubricated operating mode of pure water hydraulics plunger pump, has improved the contamination resistance of pure water hydraulics plunger pump, and practicability is very strong.
The utility model adopts following technological means, a kind of semiaxis formula pure water hydraulics axial piston pump, and wherein front cover 3, housing 9, rear end cover 15 connect as one; Main shaft 1 is connected with cylinder body 10, constitutes main shaft-housing assembly; Front slide bearing 25 is embedded in the front cover 3, links to each other with main shaft 1; Back back shaft 14 is connected with rear end cover 15 interference, and back sliding bearing 12 is embedded in cylinder body 10 inside; Main shaft 1, back back shaft 14 are equipped with cross water port 13, and front cover 3 offers annular water-flowing trough 5, oblique water port 4 and axial water port 24, and the lubricating channels of front slide bearing 25, back sliding bearing 12 is communicated with the cavity of housing 9.
Along main shaft-housing assembly axial direction several spring assemblies 11 that evenly distribute, contact with cylinder body 10, the liner plate 17 that floats respectively; Ball pivot 21 1 ends are connected with main shaft, and circle cooperates and constitutes typed ball bearing pair in the other end and the backhaul dish 7, and even a plurality of holes of distribution on the backhaul dish 7 are adjacent to the piston shoes 22 of similar number on swash plate 6; The liner plate 17 that floats constitutes the flow pair with thrust plate 16; Thrust plate 16 is installed on the rear end cover 15 by screw, and reverse side offers high pressure sealing groove 16.1, and assembling O RunddichtringO is realized sealing; Low pressure kidney slot 16.2, high pressure kidney slot 16.3 are offered in thrust plate 16 fronts, respectively with rear end cover 15 on pick trough 15.2, pressure tank 15.3 link up mutually, pick trough 15.2 is a unenclosed construction, directly communicates with the housing chamber.
Spring assembly of the present utility model (11), cylinder hole (20) number is 5,7,9 or 11.
The implementation of the utility model bearing pair: front slide bearing 25, back sliding bearing 12 are made the back interference by high-abrasive materials such as polymer composite or potteries and are assembled on front cover 3, the cylinder body 10, or the employing Shooting Technique, on front cover 3, cylinder body 10 directly with the polymer composite molding and forming; All offer axial, circumferential water flowing groove on the bearing shell, the annular water-flowing trough 5 that groove is offered by front cover 3, oblique water port 4 and axial water port 24 communicate with the cavity of housing 9.Make the fluid of bearing inside to circulate, fully realized the lubricated and cooling of bearing with the fluid formation in the housing chamber.
The implementation of the utility model trunk piston set: cylinder body 10 adopts corrosion resistant alloy to make, and improves its hardness and wear resistance by heat treatment, and circle in the cylinder hole 20 is carried out surface Hardening Treatment; A plunger bushing 19.2 of being made by polymer composite is inlayed on plunger matrix 19.1 surfaces, and fixing by gland nut 19.5, guarantees that plunger bushing 19.2 does not come off in the pump operation process; Offer two pairs of radial holes that are connected 19.4 and annular groove 19.3 on the plunger matrix 19.1 respectively, annular groove 19.3 is by radially water port 19.4 and plunger cavity are linked up.
The implementation of the utility model piston shoes pair: piston shoes 22 comprise the metallic matrix of having offered a plurality of tapped holes, and injection moulding one deck polymer composite layer is used for rubbing surface on matrix, constitute the piston shoes pair with swash plate 6.Swash plate 6 adopts corrosion resistant alloy material to make, and improves the hardness and the wear resistance on its friction inclined-plane by heat treatment and surface modification treatment.
The implementation of the utility model flow pair: thrust plate 16 comprises the metallic matrix of having offered a plurality of tapped holes, and injection moulding one deck polymer composite layer is used for rubbing surface on matrix, constitutes the flow pair with unsteady liner plate 17.The liner plate 17 that floats adopts corrosion resistant alloy material to make, and improves the hardness and the wear resistance of its rubbing surface by heat treatment and surface modification treatment.
The polymer composite that the utility model adopts is PEEK or other wear-resisting level engineering plastics, and corrosion resistant alloy is stainless steel or titanium alloy material.
The utility model can be obtained following beneficial effect:
1. fluid in the bearing pair lubricating channels and the fluid in the pump housing constitute circulation, help lubricated, the cooling of bearing, have improved the working life and the functional reliability of bearing.
2. adopt semiaxis formula structure, the fore bearing supports main shaft, back cylinder inner bearing supports cylinder body, and the bearing connection and reasonable arrangement makes front and back bearings PV value evenly distribute, and has avoided bearing because the heavy wear that unbalance stress causes.The disturbing moment that the back sliding bearing can the equilibrium assignment dish has simultaneously improved the stable working of pump.
3. trunk piston set adopts the clearance automatic compensation principle, can suitably increase matching gap when realizing sealing, has reduced difficulty of processing, has improved the contamination resistance of pure water pump effectively.
4. main friction pairs all adopts macromolecule to meet material and corrosion resistant alloy or pottery pairing, can satisfy water hydraulic pump to crucial friction pair fretting wear, corrosion proof requirement.
5. all offer a plurality of threaded apertures on the metallic matrix of piston shoes, thrust plate, made the polymer composite after the injection moulding embed threaded apertures, strengthened the connecting forces between injection molded layers and the metallic matrix.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the plan view of front cover;
Fig. 3 is the sectional view of front cover;
Fig. 4 is the structure principle chart of trunk piston set;
Fig. 5 is the plan view of rear end cover;
Fig. 6 is the sectional view of rear end cover;
Fig. 7 is the right elevation of the liner plate that floats;
Fig. 8 is the left view of thrust plate;
Fig. 9 is the right elevation of thrust plate.
Among the figure: 1 main shaft, 2 sealed covers, 3 front covers, 4 oblique water ports, 5 annular water-flowing troughs, 6 swash plates, 7 backhaul dishes, 8 bleed screws, 9 housings, 10 cylinder bodies, 11 spring assemblies, 12 back sliding bearings, 13 cross water ports, 14 back back shafts, 15 rear end covers, 15.1 water intake, 15.2 pick trough, 15.3 pressure tanks, 15.4 water outlet, 16 thrust plates, 16.1 high pressure sealing grooves, 16.2 the low pressure kidney slot, 16.3 high pressure kidney slots, 17 unsteady liner plates, 17.1 waist shape window, 18 floating bushings, 19 plungers, 19.1 the plunger matrix, 19.2 plunger bushings, 19.3 annular grooves, 19.4 water port radially, 19.5 set screw nuts, 20 cylinder holes, 21 ball pivots, 22 piston shoes, 23 locating studs, 24 axial water-flowing troughs, 25 front slide bearings, 26 envelopes.
Embodiment
Below in conjunction with the accompanying drawing among the part embodiment of the present utility model 1 ~ 9, mode of execution of the present utility model is done explanation in further detail.Obviously, described embodiment only is all embodiments' of the utility model a part.Those of ordinary skills are not making under the creative work prerequisite, and other embodiments that directly obtain or associate from the disclosed content of the utility model all belong to protection domain of the present utility model.
The utility model embodiment provides a kind of semiaxis formula pure water hydraulics axial piston pump.As shown in Figure 1, front cover 3, housing 9, rear end cover 15 connect as one by bolt; Main shaft 1 and cylinder body 10 are connected by key, constitute main shaft-housing assembly; Front slide bearing 25 is embedded in the front cover 3, links to each other with main shaft 1; Back back shaft 14 is connected with rear end cover 15 interference, and back sliding bearing 12 is embedded in cylinder body 10 inside; Bleed screw 8 is installed on the housing 9, does not open when pump is worked, exhausting air prevents the generation of cavitating.Use 26 pairs of main shafts 1 of axle envelope to seal, axle envelope 26 is installed on the sealed cover 2.
Along the even a plurality of spring assemblies 11 that distribute of main shaft-housing assembly axial direction, two ends contact with cylinder body 10, the liner plate 17 that floats respectively; Ball pivot 21 1 ends are connected with main shaft, and circle cooperates and constitutes typed ball bearing pair in the other end and the backhaul dish 7, and even distribution several holes on the backhaul dish 7 is adjacent to the piston shoes 22 of similar number on swash plate 6; The liner plate 17 that floats constitutes the flow pair with thrust plate 16; Thrust plate 16 is installed on the rear end cover 15 by screw, and reverse side offers high pressure sealing groove 16.1, and assembling O RunddichtringO is realized sealing; Low pressure kidney slot 16.2, high pressure kidney slot 16.3 are offered in thrust plate 16 fronts, respectively with rear end cover 15 on pick trough 15.2, pressure tank 15.3 link up mutually.
Along the even a plurality of cylinders hole 20 that distributes of main shaft-housing assembly axial direction, plunger 19 bulbs and piston shoes 22 ball-and-sockets constitute plunger assembly, and cylinder hole 20 constitutes trunk piston set with plunger assembly; Plunger 19 communicates with kidney slot on the thrust plate 16 by the floating bushing 18 of correspondence.
Semiaxis formula pure water hydraulics axial piston pump, its spring assembly 11, cylinder hole 20 numbers are 5,7,9 or 11.
Semiaxis formula pure water hydraulics axial piston pump, its suction water and lubricated, the cooling work process is as follows: the pump prestart, working water is flowed into the cavity of housing 9 by the open type pick trough 15.2 of rear end cover 15, low-pressure water in the housing chamber is respectively by the cross water port 13 on the main shaft, annular water-flowing trough 5 on the front cover, axial water port 24, oblique water port 4 enter in the lubricating channels of back sliding bearing 12, front slide bearing 25, and make the cavity of the whole pump housing be full of working medium water equably; During pump work, the water in the housing 9 sucks plunger cavity through the waist shape window 17.1 on thrust plate 16, the liner plate 17 that floats by plunger 19, and when plunger motion arrived the swash plate upper dead center, suction finished; Plunger 19 turns over after the upper dead center, the beginning drainage procedure.Low-pressure water in the pump chamber is discharged the pump housings through thrust plate 16 high pressure kidney slots through rear end cover 15 water outlets 15.4 by plunger on one side at this moment, Yi Bian constantly replenished from rear end cover pick trough 15.2 again.Formed the flow circuit effect of water in the pump chamber, the heat that produces during with each friction pair work is taken away, and helps lubricated, the cooling of friction pair.
The implementation of the utility model trunk piston set: as shown in Figure 3, plunger matrix 19.1 adopts corrosion resistant alloy to make, a plunger bushing 19.2 of being made by polymer composite is inlayed on the surface, and by gland nut 19.5 fixing and lockings, guarantees that plunger bushing 19.2 does not come off in the pump operation process; Offer two pairs of radial holes that are connected 19.4 and annular groove 19.3 on the plunger matrix 19.1 respectively, realize the communication of circular groove 19.3 and plunger cavity.When plunger 19 setting-out, high pressure water in the plunger cavity flows in the circular groove 19.3 by radial hole 19.4, and the plunger bushing stand under load of circular groove 19.3 peripheries produces distortion, and the gap between plunger bushing 19.2 and the cylinder hole 20 reduces, reduce to leak, realize the automatic compensation sealing of trunk piston set.When plunger 19 is in the suction stroke, be low-pressure water in the circular groove 19.3, plunger bushing 19.2 internal and external pressure balances return to original shape.Gap between plunger bushing 19.2 and the cylinder hole 20 increases, and frictional force reduces, and the trunk piston set wearing and tearing reduce.Adopt this structure, can effectively improve trunk piston set processing matching gap (40 ~ 50um), reduced difficulty of processing.Improved the contamination resistance of trunk piston set simultaneously, reduced the requirement of hydraulic pamp the media filtration precision.
The implementation of the utility model bearing pair: front slide bearing 25, back sliding bearing 12 are made the back interference by high-abrasive materials such as polymer composite or potteries and are assembled on front cover 3, the cylinder body 10, or the employing Shooting Technique, on front cover 3, cylinder body 10 directly with the polymer composite molding and forming; All offer axial, circumferential water flowing groove on the bearing shell, the annular water-flowing trough 5 that groove is offered by front cover 3, oblique water port 4 and axial water port 24 communicate with the cavity of housing 9.Make the fluid of bearing inside to circulate with the fluid formation in the housing chamber, sliding bearing obtains lubricated fully and cooling.
The secondary implementation of compensation automatically of the utility model end-face friction: a plurality of spring assemblies 11 evenly distribute along the cylinder body axial direction, and two ends contact with cylinder body 10, the liner plate 17 that floats respectively.Under the spring force effect, the liner plate 17 that floats can produce axial floating between cylinder hole 20 and thrust plate 16, when cylinder body is subjected to the disturbing moment of thrust plate 16 and axial small skew takes place, the some springs that decrement is big can be pushed the liner plate 17 that floats to thrust plate 16, the liner plate 17 that guarantees to float is adjacent to thrust plate 16 all the time, automatically the gap between compensation thrust plate 16 and the unsteady liner plate 17 reduces leakage rate; When piston shoes 22, when thrust plate 16 end wear amounts increase, under the effect of spring force, piston shoes 22 and swash plate 6, thrust plate 16 and unsteady liner plate 17 are adjacent to again, the compensate for wear amount.
Piston shoes 19 of the present utility model, thrust plate 11, front and back sliding bearing all can adopt the technology of injection moulding one deck polymer composite on metallic matrix, a plurality of tapped holes have all been offered on the metallic matrix, make the polymer composite after the injection moulding embed threaded apertures, strengthened the connecting forces between injection molded layers and the metallic matrix.
The polymer composite that the utility model adopts is PEEK or other wear-resisting level engineering plastics, and corrosion resistant alloy is stainless steel or titanium alloy material.
Claims (7)
1. semiaxis formula pure water hydraulics axial piston pump, wherein front cover (3), housing (9), rear end cover (15) connect as one; Main shaft (1) is connected with cylinder body (10), constitutes main shaft-housing assembly; Front slide bearing (25) is embedded in the front cover (3), links to each other with main shaft (1); Back back shaft (14) is connected with rear end cover (15) interference, and back sliding bearing (12) is embedded in cylinder body (10) inside, is connected with cylinder body (10); Main shaft (1), back back shaft (14) are equipped with cross water port (13), front cover (3) offers annular water-flowing trough (5), oblique water port (4) and axial water port (24), and the lubricating channels of front slide bearing (25), back sliding bearing (12) is communicated with the cavity of housing (9);
Along the even a plurality of spring assemblies (11) that distribute of main shaft-housing assembly axial direction, two ends contact with cylinder body (10), the liner plate (17) that floats respectively; Ball pivot (21) one ends are connected with main shaft, and circle cooperates and constitutes typed ball bearing pair in the other end and the backhaul dish (7), and even distribution several holes on the backhaul dish (7) is adjacent to the piston shoes (22) of similar number on swash plate (6); The liner plate (17) that floats constitutes the flow pair with thrust plate (16); Thrust plate (16) is installed on the rear end cover (15) by screw, and reverse side offers high pressure sealing groove (16.1), and assembling O RunddichtringO is realized sealing; Low pressure kidney slot (16.2), high pressure kidney slot (16.3) are offered in thrust plate (16) front, respectively with rear end cover (15) on pick trough (15.2), pressure tank (15.3) link up mutually, the pick trough (15.2) of rear end cover (15) is a unenclosed construction, directly communicates with the cavity of housing (9);
Along the even a plurality of cylinders holes (20) that distribute of main shaft-housing assembly axial direction, plunger (19) bulb and piston shoes (22) ball-and-socket constitute plunger assembly, and cylinder hole (20) constitute trunk piston set with plunger assembly; Plunger (19) communicates with kidney slot on the thrust plate (16) by corresponding floating bushing (18).
2. semiaxis formula pure water hydraulics axial piston pump according to claim 1 is characterized in that: described spring assembly (11), cylinder hole (20) number is 5,7,9 or 11.
3. semiaxis formula pure water hydraulics axial piston pump according to claim 1, it is characterized in that: described front slide bearing (25), back sliding bearing (12) are made the back interference by polymer composite or ceramic wear-resisting material and are assembled on front cover (3), the cylinder body (10), or the employing Shooting Technique, on front cover (3), cylinder body (10) directly with the polymer composite molding and forming; All offer axial, circumferential water flowing groove on the bearing shell, the annular water-flowing trough (5) that groove is offered by front cover (3), oblique water port (4) and axial water port (24) communicate with the cavity of housing (9).
4. semiaxis formula pure water hydraulics axial piston pump according to claim 1 is characterized in that: described cylinder body (10) adopts corrosion resistant alloy to make, and improves its hardness and wear resistance by heat treatment, and circle in cylinder hole (20) is carried out surface Hardening Treatment; A plunger bushing of being made by polymer composite (19.2) is inlayed on plunger matrix (19.1) surface, and by gland nut (19.5) fixing and locking; Offer two pairs of radial holes that are connected (19.4) and annular groove (19.3) on the plunger matrix (19.1) respectively, annular groove (19.3) is linked up by radial hole (19.4) and plunger cavity.
5. semiaxis formula pure water hydraulics axial piston pump according to claim 1, it is characterized in that: described piston shoes (22) comprise the metallic matrix of having offered a plurality of tapped holes, injection moulding one deck polymer composite layer is used for rubbing surface on matrix, constitutes the piston shoes pair with swash plate (6); Swash plate (6) adopts corrosion resistant alloy material to make, and improves the hardness and the wear resistance on its inclined-plane by heat treatment and surface modification treatment.
6. semiaxis formula pure water hydraulics axial piston pump according to claim 1, it is characterized in that: described thrust plate (16) comprises the metallic matrix of having offered a plurality of tapped holes, injection moulding one deck polymer composite layer is used for rubbing surface on matrix, constitutes the flow pair with unsteady liner plate (17); The liner plate (17) that floats adopts corrosion resistant alloy material to make, and improves the hardness and the wear resistance of its rubbing surface by heat treatment and surface modification treatment.
7. according to claim 3, the described semiaxis formula of 4,5 or 6 arbitrary claims pure water hydraulics axial piston pump is characterized in that: described polymer composite is PEEK or other wear-resisting level engineering plastics, and corrosion resistant alloy is stainless steel or titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722007 CN203081669U (en) | 2012-12-24 | 2012-12-24 | Half shaft type pure water hydraulic axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220722007 CN203081669U (en) | 2012-12-24 | 2012-12-24 | Half shaft type pure water hydraulic axial plunger pump |
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| Publication Number | Publication Date |
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| CN203081669U true CN203081669U (en) | 2013-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220722007 Expired - Fee Related CN203081669U (en) | 2012-12-24 | 2012-12-24 | Half shaft type pure water hydraulic axial plunger pump |
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| CN (1) | CN203081669U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756916A (en) * | 2016-04-22 | 2016-07-13 | 江阴职业技术学院 | Valve plate for axial plunger pump noise reduction and assembling technology of valve plate |
| CN106655589A (en) * | 2016-11-29 | 2017-05-10 | 邢天宜 | Gland seal system for resisting deep-sea high pressure and equipped with motor rotating shaft equipment |
| CN108087536A (en) * | 2017-12-28 | 2018-05-29 | 南京高速齿轮制造有限公司 | Prevent being emptied structure in wind power speed-increasing gearbox mechanical pump lubrication system |
| CN108612621A (en) * | 2018-06-21 | 2018-10-02 | 龙工（上海）精工液压有限公司 | Hydraulic motor floating port plate structure |
| CN109026663A (en) * | 2018-09-27 | 2018-12-18 | 兰州理工大学 | A kind of active self-cooling type hydraulic planger pump |
| CN109236598A (en) * | 2018-11-08 | 2019-01-18 | 四川航天烽火伺服控制技术有限公司 | A kind of plunger pump swash plate valve plate component |
| CN110067717A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of synchronous self compensation distribution construction and swash plate plunger pump or motor comprising the structure |
| CN112553568A (en) * | 2019-09-25 | 2021-03-26 | 丹佛斯有限公司 | Method for producing a hydraulic machine |
| CN114934885A (en) * | 2022-02-09 | 2022-08-23 | 上海同泰火安科技有限公司 | High-pressure plunger pump additionally provided with positioning shaft for bearing support |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
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2012
- 2012-12-24 CN CN 201220722007 patent/CN203081669U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105756916B (en) * | 2016-04-22 | 2017-09-12 | 江阴职业技术学院 | It is axially facing the valve plate and its assembly technology of plunger pump noise reduction |
| CN105756916A (en) * | 2016-04-22 | 2016-07-13 | 江阴职业技术学院 | Valve plate for axial plunger pump noise reduction and assembling technology of valve plate |
| CN106655589B (en) * | 2016-11-29 | 2023-06-06 | 邢天宜 | Shaft seal system with motor rotating shaft device for resisting deep sea high water pressure |
| CN106655589A (en) * | 2016-11-29 | 2017-05-10 | 邢天宜 | Gland seal system for resisting deep-sea high pressure and equipped with motor rotating shaft equipment |
| CN108087536A (en) * | 2017-12-28 | 2018-05-29 | 南京高速齿轮制造有限公司 | Prevent being emptied structure in wind power speed-increasing gearbox mechanical pump lubrication system |
| CN110067717A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of synchronous self compensation distribution construction and swash plate plunger pump or motor comprising the structure |
| CN108612621A (en) * | 2018-06-21 | 2018-10-02 | 龙工（上海）精工液压有限公司 | Hydraulic motor floating port plate structure |
| CN109026663A (en) * | 2018-09-27 | 2018-12-18 | 兰州理工大学 | A kind of active self-cooling type hydraulic planger pump |
| CN109026663B (en) * | 2018-09-27 | 2019-07-30 | 兰州理工大学 | A kind of active self-cooling type hydraulic planger pump |
| CN109236598A (en) * | 2018-11-08 | 2019-01-18 | 四川航天烽火伺服控制技术有限公司 | A kind of plunger pump swash plate valve plate component |
| CN112553568A (en) * | 2019-09-25 | 2021-03-26 | 丹佛斯有限公司 | Method for producing a hydraulic machine |
| CN114934885A (en) * | 2022-02-09 | 2022-08-23 | 上海同泰火安科技有限公司 | High-pressure plunger pump additionally provided with positioning shaft for bearing support |
| CN116085250A (en) * | 2023-01-10 | 2023-05-09 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
| CN116085250B (en) * | 2023-01-10 | 2023-11-24 | 山东大学 | Integrated flow distribution type low-leakage plunger pair device |
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