CN203098171U - Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing - Google Patents
Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing Download PDFInfo
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- CN203098171U CN203098171U CN 201220674368 CN201220674368U CN203098171U CN 203098171 U CN203098171 U CN 203098171U CN 201220674368 CN201220674368 CN 201220674368 CN 201220674368 U CN201220674368 U CN 201220674368U CN 203098171 U CN203098171 U CN 203098171U
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- liner plate
- sliding bearing
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Abstract
The utility model relates to pumps and particularly relates to a tilted-disc-type disc-flow-distribution seawater plunger pump with an embedded slide bearing. According to the tilted-disc-type disc-flow-distribution seawater plunger pump with the embedded slide bearing, a shell of the pump consists of a front end cover, a shell body and a rear end cover; an internal structure is as follows: a tilted disc is fixedly arranged on the front end cover, a sliding shoe is tightly pressed on a tilted face of the tilted disc by a return disc, the return disc is hinged to a spherical hinge, a cylinder body, a floating liner plate and a flow distribution disc are sequentially arranged at the right side of the spherical hinge, and the flow distribution disc is fixedly arranged on the rear end cover; and a main shaft penetrates through the front end cover, the tilted disc, the return disc and the spherical hinge from left to right and drives the cylinder body to rotate, the cylinder body drives the floating liner plate to rotate, a spring is compressed between the cylinder body and the floating liner plate, the floating liner plate is clung to the flow distribution disc, the cylinder body and the shell body are connected through an outside-cylinder slide bearing so as to provide a support for a front section of the cylinder body, the cylinder body and the rear end cover are connected through the embedded slide bearing, and an embedded slide bearing shaft penetrates through the flow distribution disc and the floating liner plate and extends to the right side of the cylinder body so as to provide a support for the cylinder body.
Description
Technical field
The utility model belongs to the plunger pump class, relates to a kind of inclined disc type end fluid-distributing axial sea water plunger pump.
Background technique
Sea water pump is the core drive element in the sea water hydraulic system.Now each country is all making great efforts exploitation sea water and fresh water hydraulic element, and the sea water and fresh water oil hydraulic pump of having researched and developed at present mainly contains structural types such as gear type, blade type and plunger type, and they have characteristics separately.In general, the suction capacity of gear pump is good, and contamination resistance is strong, and is simple in structure, but the engagement of line higher pair makes the contact gear ratio merit very big; Vane pump has long, advantage such as noise is low, all even volume of flow is little of life-span, but the damage ratio to medium is responsive, because of being subjected to blade to throw away the influence of factors such as power, suction velocity and wearing and tearing, its rotating speed is subjected to certain restriction again, and structure also more complicated and sealing effect is poor; Plunger pump has characteristics such as compact structure, light weight, working pressure height, and the ratio merit of vital part is little more a lot of than the pump of other types under identical operating conditions.In sum, the structural type of plunger type is applicable to the sea water and fresh water to be in the oil hydraulic pump of working medium, and the sea water hydraulic pump that present domestic and international many units are developed has all adopted plunger-type structure.
Can be divided into inclined disc type and clino-axis type two big classes by the structural type plunger pump.Bent axis type axial piston pump is not subjected to the influence of radial imbalance force at work, and its angle of inclination can be very big, so have littler plunger and cylinder body size with the inclined shaft pump of flow.General inclined shaft pump adopts connecting rod to stir the plunger actuation movement of cylinder block and finishes flow work, impact so all will bear the very high bar that changes of frequency at the time inner plunger in a moving week of cylinder body revolution and connecting rod, this impact is not only very unfavorable but also have a very big operational noise to the abrasion condition of trunk piston set.Comparatively speaking, swash plate pump work is more steady, and noise ratio is lower.
The flow mode of plunger pump has forms such as valve flow, valve plate distribution and axle flow.The main structure form of the plunger pump of axle flow is the radial plunger pump that cylinder body rotates, but such pump structure is comparatively complicated, volume and weight is big, manufacturing process complexity, cost height, and pintle bending etc. causes the gap between cylinder body and the pintle bigger, can't compensate again after the wearing and tearing, for the lower water of viscosity, its leakage rate is big, volumetric efficiency is low and be difficult for setting up pressure, so seldom adopt this structural type in sea water plunger pump.The valve flow is the flow mode that adopts the earliest in the oil hydraulic pump, and its main feature of the flow-distributing valve in the plunger pump is the suction and the draining of suction valve and delivery valve control pump.Because the favorable sealing property of flow-distributing valve structure can be worked under high pressure conditions, therefore be widely used in various high pressure, the ultrahigh-pressure hydraulic pump.When plunger pump was worked, flow-distributing valve constituted airtight work cavity volume with component such as cylinder bodies, and along with the to-and-fro motion of plunger is communicated with water sucking mouth, the setting-out mouth of flow-distributing valve successively or disconnects with plunger cavity, thereby realize the proper functioning of pump.For adopting seawater as for the oil hydraulic pump of working medium, the flow-distributing valve structure Design is also had higher requirement: the material of flow-distributing valve spool and spring must have good shock resistance, cavitation erosion ability and corrosion resistance; And between the spool, valve seat excellent sealing performance must be arranged, bring certain difficulty so also for selection and processing.Valve plate distribution formula sea water plunger pump makes water flow to the zone of high pressure through the flow window on the thrust plate from low pressure area by the motion between cylinder body and the thrust plate, thereby realizes suction, drainage procedure.The valve plate distribution structure has overcome in the hysteresis quality of flow-distributing valve in the valve distributing construction and the axle flow leaks some big defectives, have the following advantages: the area of contact of its flow pair is big and can set up certain lubrication film thickness, after wearing and tearing, can compensate automatically, by appropriate design to the flow auxiliary structure, the power and the moment of cylinder body and thrust plate in can balance valve plate distribution plunger pump, reduce hydraulic shock and noise, therefore in the sea water hydraulic transmission, obtained using widely.
Various countries as the valve plate distribution formula axial piston pump of Finland Hytar Oy company and Tamper Polytechnics joint research and development, all adopt seawater lubricated also all making great efforts the various sea water and fresh water oil hydraulic pumps of research and development.This pump rated pressure 21MPa, flow is 30L/min, volumetric efficiency 92%, the life-span can reach 8000 hours.This pump also has a lot of narrow limitation, requires the filter precision height, costs an arm and a leg and flow is not suitable for the occasion of big flow for a short time.
The model utility content
The utility model provides a kind of inclined disc type dish flow sea water plunger pump of embedded sliding bearing, and its purpose is to solve water hydraulic plunger pump bearing problem easy to wear, simplifies water column plug pump structure and improves the working life of water plunger pump and the stationarity of work.
To achieve these goals, the utility model has been taked following technological scheme.The inclined disc type dish flow sea water plunger pump that embedded sliding bearing is arranged in the utility model comprises that front cover 4, housing 6 and rear end cover 22 from left to right connect successively, constitutes the shell of pump, and sealing gland 2 is pressed on front cover 4 left sides; Internal structure is: swash plate 5 is fixed on the front cover 4, and piston shoes 18 are pressed on by backhaul dish 7 on the inclined-plane of swash plate 5, and backhaul dish 7 is hinged with ball pivot 17, and ball pivot 17 right sides are followed successively by cylinder body 11, float liner plate 14 and thrust plate 15, and thrust plate 15 is fixed on rear end cover 22; Main shaft 1 runs through front cover 4, swash plate 5, backhaul dish 7 and ball pivot 17 from left to right, driving cylinder body 11 rotates, cylinder body 11 drives the liner plate 14 that floats and rotates, be pressed with spring 13 between cylinder body 11 and the unsteady liner plate 14, the liner plate 14 that floats is close to thrust plate 15, be connected by the outer sliding bearing of cylinder between cylinder body 11 and the housing 6, for cylinder body 11 leading portions provide support, be connected by embedded sliding bearing 16 between cylinder body 11 and the rear end cover 22, embedded sliding bearing 16 runs through thrust plate 15, unsteady liner plate 14 to cylinder body 11 right sides, for cylinder body 11 provides support;
At cylinder body 11 circumferential uniform odd number plunger holes, the inwall in hole is wear-resisting engineering plastics, and plunger 19 is positioned at each plunger hole, and each plunger 19 and piston shoes 18 are hinged and connected;
Adopt mechanical seal 3 sealings between front cover 4 and the main shaft 1, the sealing of O type circle is adopted at other positions.
Described embedded sliding bearing 16 all has water port 16.1 vertically and radially, and water port 16.1 is used for providing enough water to lubricate and cool off to embedded sliding bearing.
Described cylinder body 11 has several inletes 11.1 on the avris right side, in the pump after assembling, ante-chamber and back cavity are separated by sliding bearing, and the water of back cavity can arrive ante-chamber by inlet 11.1 and provide lubricated and heat radiation for mechanical seal 3.
Beneficial effect
What the utility model adopted is inclined disc type valve plate distribution, leans on swash plate 5 and backhaul dish 7 to realize the to-and-fro motion of plunger; All friction pairs are all directly used water lubrication, cooling, and are simple in structure, compact.Cylinder body 11 is supported by the embedded sliding bearing of outer sliding bearing of cylinder and back, guarantees cylinder body steady running under the operating mode of high-speed overload.
Description of drawings
Fig. 1 is a structural principle schematic representation of the present utility model;
Fig. 2 is the schematic representation of cylinder body;
Fig. 3 is the left view of cylinder body;
Fig. 4 is liner plate and the floating bushing schematic representation of floating;
Fig. 5 is the schematic representation of thrust plate;
Fig. 6 is the schematic representation of embedded sliding bearing axle;
Fig. 7 is the schematic representation of rear end cover;
Fig. 8 is the outer sliding bearing stationary ring schematic representation of cylinder.
1, main shaft, 2, sealing gland, 3, mechanical seal, 4, front cover, 5, swash plate, 6, housing, 7, the backhaul dish, the outer sliding bearing stationary ring of 8 cylinders, 9, the outer sliding bearing rotating ring of cylinder, 10, key, 11, cylinder body, 12, compression spring, 13, concentrate spring, 14, unsteady liner plate, 15, thrust plate, 16, embedded sliding bearing axle, 17, ball pivot, 18, piston shoes, 19, plunger, 20, plunger bushing, 21, floating bushing, 22, rear end cover, 11.1, the water port, 11.2, embedded sliding bearing sleeve, 11.3, plunger bushing, 11.4, the cylinder hole, 14.1, the through-flow window of liner plate floats, 15.1, the thrust plate window of receiving water, 15.2 thrust plate water outlet window, 16.1, the water port, 22.1, the rear end cover water outlet, 22.2, o-ring groove, 22.3 rear end cover water intakes.
Embodiment
The utility model is a kind of inclined disc type dish flow sea water plunger pump of embedded sliding bearing.The shell of pump is made up of sealing gland 2, front cover 4, housing 6 and rear end cover 22, and other workpieces are contained in the pump case compactly.Swash plate 4 is fixed on the front cover 4 by seam and locating stud.Cylinder body 11 circle distribution have a plurality of and cylinder hole 11.4 parallel axes, and at cylinder body 11 circumferential uniform odd number plunger holes, the inwall in hole is wear-resisting engineering plastics, and plunger 19 is located in the plunger hole and plunger hole is little Spielpassung.The piston shoes plunger assembly is made up of plunger 19 and piston shoes 18, and piston shoes ball-and-socket and plunger ball constitute ball pivot, and damping hole is arranged in the middle of plunger 19 bulbs and in the middle of the piston shoes 18, the high pressure water in the plunger cavity is introduced the piston shoes bottom form the static pressure support.The inclined-plane of swash plate 5 is close in piston shoes 18 bottoms, and the plane of backhaul dish 7 is pressed on the shoulder of piston shoes 18 and makes plunger 19 can realize to-and-fro motion.Cylinder body 11 is fixedlyed connected with main shaft 1, in the bottom of axle 1 ball pivot 17 is housed, and ball pivot 17 is connected by typed ball bearing pair with backhaul dish 7 can bear certain thrust.The right-hand member of cylinder body 11 is the liner plates 14 that float, be equipped with and cylinder hole 11.4 corresponding floating bushings in unsteady liner plate 14 left sides, be with seal ring on the floating bushing 21 and stretch into plunger hole, floating, cylinder body 11 is unsteady relatively for liner plate 14, between cylinder body 11 and unsteady liner plate 14, spring 13 is housed, in the pump work process, carry out the automatic compensation in gap, thereby the flow pair can realize good sealing effect.Add embedded sliding bearing 16 in cylinder body 11 rear ends, embedded sliding bearing 16 interference are pressed in the intermediate hole of rear end cover 22.Unsteady liner plate 14 right sides are thrust plates 15, and thrust plate 15 is tightly fitted with unsteady liner plate 14 and constituted crucial flow pair, and thrust plate 15 is fixed on the rear end cover 22.Offer sealed groove between rear end cover 22 and the thrust plate, realize the zero leakage of thrust plate reverse side with seal ring.Adopt mechanical seal between main shaft 1 and the front cover 4, sealing is reliable, the life-span is long.
During work, main shaft 1 drives cylinder body 11, piston shoes plunger assembly, the liner plate 14 that floats rotates, spring 13 is evenly distributed on thrust on each piston shoes 18 by cylinder body 11, ball pivot 17, backhaul dish 7, piston shoes 18 is close on the swash plate 5 slides, thereby realize the to-and-fro motion of plunger 19 in the cylinder hole.Along with main shaft 1 rotation, when plunger 19 moves to its limit on the right-right-hand limit position, it is minimum that the volume of plunger cavity reaches, and corresponding through-flow window 14.1 is hidden fully by thrust plate 15 on the liner plate 14 that floats this moment, and plunger cavity is the space of complete closed at this moment.Along with being rotated further of main shaft 1, be attached on swash plate 5 inclined-planes at piston shoes 18 under the effect of spring force and slide, drive plunger 19 to left movement, the volume of plunger cavity is increased, connect the window of receiving water 15.1 of thrust plate 15 simultaneously, the water at water source is inhaled into plunger cavity then through the water intake 22.3 on the rear end cover 22 and the window of receiving water 15.1 of thrust plate 15.Along with the continuous rotation of cylinder body 11, the water of water intake constantly is inhaled into plunger cavity, realizes the water absorption course of pump.Main shaft 1 continues rotation, and when plunger 19 moved to limit position left, corresponding through-flow window 14.1 was hidden fully by thrust plate 15 on the liner plate 14 that floats, and this moment, plunger cavity was the space of complete closed.Rotation along with main shaft 1, be attached on swash plate 5 inclined-planes at piston shoes 18 under the effect of spring force and slide, driving plunger 19 moves right, the volume of plunger cavity is reduced, connect the water outlet window 15.2 of thrust plate 15 simultaneously, high pressure water in the plunger cavity is constantly discharged by plunger 19, arrives delivery side of pump through the water outlet 22.1 on the water outlet window 15.2 arrival rear end covers 22 of thrust plate 15, realizes the drainage procedure of pump.
All friction pairs of the present utility model all directly adopt water lubrication and cooling, comprise cylinder hole and plunger 19, plunger ball and piston shoes ball-and-socket, at the bottom of the piston shoes and swash plate 5, ball pivot 17 and backhaul dish 7, unsteady liner plate 14 and thrust plate 15, the outer sliding bearing 8 of Boring mill carrier ring 9 and cylinder, embedded sliding bearing bearing hole of cylinder body and embedded sliding bearing 16 etc.Specifically be achieved in that
Between cylinder hole and the plunger 19 certain clearance is arranged, realize sealing by this gap.When plunger cavity is in high pressure conditions, form the height pressure difference in cylinder hole and two ends, plunger 19 annular space, make that the high pressure water in the cylinder hole flows into the housing chamber by the gap.This part water is concerning cylinder hole and plunger 19, played the effect of support, lubricated and cooling.
High pressure water in the plunger cavity arrives at the bottom of piston shoes 18 boots and forms static pressure in the Seal cage between the swash plate 5 and support also by the damping hole of plunger 19 and piston shoes 18.Simultaneously the water in the damping hole also can enter the gap between plunger ball and the piston shoes ball-and-socket, and the friction pair of plunger ball and piston shoes is played lubricated, cooling action.
Unsteady liner plate and thrust plate tightly fit together and constitute the flow pair, and the liner plate that floats rotates with cylinder body, in water lubrication condition lower slider.
Have a certain amount of water between thrust plate and the unsteady liner plate and enter the housing chamber, make outer sliding bearing pair of cylinder and embedded sliding bearing pair keep the water lubrication state.Axial and circumferential at bearing all have water-flowing trough, quicken the cooling of bearing.
This uses novel used main friction pairs pairing material to be stainless steel material and reinforced plastic, has both guaranteed the corrosion resistance of part, intensity, toughness and rigidity in the pump, has guaranteed tribological properties such as the selflubricating of each friction pair, wear-resistant, damping again.
Claims (4)
1. the inclined disc type dish flow sea water plunger pump of an embedded sliding bearing is characterized in that: comprise sealing gland (2), front cover (4), housing (6), rear end cover (22), main shaft (1), swash plate (5), ball pivot (17), backhaul dish (7), piston shoes (18), plunger (19), cylinder body (11), unsteady liner plate (14), thrust plate (15), spring (13), embedded sliding bearing (16);
Front cover (4), housing (6) and rear end cover (22) from left to right connect successively, constitute the shell of pump, and sealing gland (2) is pressed on front cover (4) left side; Internal structure is: swash plate (5) is fixed on the front cover (4), piston shoes (18) are pressed on the inclined-plane of swash plate (5) by backhaul dish (7), backhaul dish (7) is hinged with ball pivot (17), ball pivot (17) right side is followed successively by cylinder body (11), float liner plate (14) and thrust plate (15), and thrust plate (15) is fixed on rear end cover (22); Main shaft (1) runs through front cover (4) from left to right, swash plate (5), backhaul dish (7), and ball pivot (17), driving cylinder body (11) rotates, cylinder body (11) drives the liner plate (14) that floats and rotates, be pressed with spring (13) between cylinder body (11) and the unsteady liner plate (14), the liner plate (14) that floats is close to thrust plate (15), be connected by the outer sliding bearing of cylinder between cylinder body (11) and the housing (6), the outer sliding bearing rotating ring (9) of the cylinder of cylinder body (11) leading portion is that cylinder body (11) leading portion provides support for the outer sliding bearing stationary ring (8) of cylinder of axle journal and housing (6) inboard for bearing shell constitutes sliding bearing, be connected by embedded sliding bearing (16) between cylinder body (11) and the rear end cover (22), embedded sliding bearing (16) runs through thrust plate (15), float liner plate (14) to cylinder body (11) right side, for cylinder body (11) provides support;
Described cylinder body (11) is a revolving part, circumferential uniform odd number plunger hole, and the inwall in hole is wear-resisting engineering plastics, and plunger (19) is positioned at each plunger hole, and each plunger (19) is hinged and connected with piston shoes (18);
Described unsteady liner plate (14) one side be fixed with cylinder body (11) on the corresponding floating bushing of plunger hole (21), liner plate (14) another side that floats has several through-flow windows (14.1), the liner plate (14) that floats is connected with cylinder body (11) by floating bushing (21), between floating bushing (21) and the plunger hole seal ring is housed, cylinder body (11) is unsteady relatively for the liner plate (14) that floats;
Described thrust plate (15) has a window of receiving water (15.1) and a water outlet window (15.2), communicates with water intake (22.3) and water outlet (22.1) on the rear end cover (22) respectively;
Unsteady liner plate (14) and thrust plate (15) are fitted, and float liner plate (14) under the drive of cylinder body, and through-flow window (14.1) on the liner plate (14) that floats and the window of receiving water (15.1) on the thrust plate (15) or water outlet window (15.2) replace to be connected;
Between described front cover (4) and the main shaft (1) mechanical seal (3) is housed.
2. according to the inclined disc type dish flow sea water plunger pump of the described a kind of embedded sliding bearing of claim 1, it is characterized in that: on every side and a circle seal ring (22.2) arranged between the thrust plate (15) at the water outlet (22.1) of rear end cover (22).
3. according to the inclined disc type dish flow sea water plunger pump of the described a kind of embedded sliding bearing of claim 1, it is characterized in that: described embedded sliding bearing (16) all has water port (16.1) vertically and radially.
4. according to the inclined disc type dish flow sea water plunger pump of the described a kind of embedded sliding bearing of claim 1, it is characterized in that: described cylinder body (11) has several inletes (11.1) at avris.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674368 CN203098171U (en) | 2012-12-07 | 2012-12-07 | Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220674368 CN203098171U (en) | 2012-12-07 | 2012-12-07 | Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098171U true CN203098171U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220674368 Expired - Lifetime CN203098171U (en) | 2012-12-07 | 2012-12-07 | Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing |
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| CN (1) | CN203098171U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742380A (en) * | 2014-01-02 | 2014-04-23 | 北京工业大学 | Seawater piston motor low in pulsation |
| CN103742380B (en) * | 2014-01-02 | 2016-11-30 | 北京工业大学 | A kind of sea water piston motor of low pulse |
| CN110067724A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of sliding plate supporting type axis plunger pump or motor |
| CN110067725A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of non-through axis plunger pump of sliding plate supporting type or motor |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN110886685A (en) * | 2019-12-04 | 2020-03-17 | 永康市光逸科技有限公司 | Rotating disc for plunger pump, machining method of rotating disc and injection mold |
| CN110905751A (en) * | 2018-08-28 | 2020-03-24 | 罗伯特·博世有限公司 | Hydrostatic extruder |
| CN112796968A (en) * | 2020-12-03 | 2021-05-14 | 北京航空航天大学宁波创新研究院 | Embedded return stroke structure of sloping cam plate and have plunger pump of this structure |
| CN114001007A (en) * | 2021-11-02 | 2022-02-01 | 河南科技大学 | Inclined shaft plunger type hydraulic motor pump |
| CN114001005A (en) * | 2021-11-02 | 2022-02-01 | 河南科技大学 | Hydraulic plunger pump |
| CN114294194A (en) * | 2021-12-31 | 2022-04-08 | 江苏中迈德流体科技有限公司 | Axial plunger type high-pressure water pump |
| CN115234461A (en) * | 2022-07-22 | 2022-10-25 | 中航力源液压股份有限公司 | Gear disc and spherical hinge antifriction mechanism of aviation hydraulic pump |
-
2012
- 2012-12-07 CN CN 201220674368 patent/CN203098171U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742380B (en) * | 2014-01-02 | 2016-11-30 | 北京工业大学 | A kind of sea water piston motor of low pulse |
| CN103742380A (en) * | 2014-01-02 | 2014-04-23 | 北京工业大学 | Seawater piston motor low in pulsation |
| CN110067720A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of bearing bearing sliding plate auxiliary structure and swash plate plunger pump or motor comprising the structure |
| CN110905751A (en) * | 2018-08-28 | 2020-03-24 | 罗伯特·博世有限公司 | Hydrostatic extruder |
| CN110905751B (en) * | 2018-08-28 | 2023-10-27 | 罗伯特·博世有限公司 | hydrostatic extruder |
| CN110067725A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of non-through axis plunger pump of sliding plate supporting type or motor |
| CN110067724A (en) * | 2019-03-13 | 2019-07-30 | 钟彪 | A kind of sliding plate supporting type axis plunger pump or motor |
| CN110886685A (en) * | 2019-12-04 | 2020-03-17 | 永康市光逸科技有限公司 | Rotating disc for plunger pump, machining method of rotating disc and injection mold |
| CN112796968A (en) * | 2020-12-03 | 2021-05-14 | 北京航空航天大学宁波创新研究院 | Embedded return stroke structure of sloping cam plate and have plunger pump of this structure |
| CN114001007A (en) * | 2021-11-02 | 2022-02-01 | 河南科技大学 | Inclined shaft plunger type hydraulic motor pump |
| CN114001005A (en) * | 2021-11-02 | 2022-02-01 | 河南科技大学 | Hydraulic plunger pump |
| CN114294194A (en) * | 2021-12-31 | 2022-04-08 | 江苏中迈德流体科技有限公司 | Axial plunger type high-pressure water pump |
| CN115234461A (en) * | 2022-07-22 | 2022-10-25 | 中航力源液压股份有限公司 | Gear disc and spherical hinge antifriction mechanism of aviation hydraulic pump |
| CN115234461B (en) * | 2022-07-22 | 2023-11-24 | 中航力源液压股份有限公司 | Gear disc and spherical hinge antifriction mechanism of aviation hydraulic pump |
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Granted publication date: 20130731 |