CN103742378B - A kind of radial plunger hydraulic pump adopting guiding valve flow - Google Patents
A kind of radial plunger hydraulic pump adopting guiding valve flow Download PDFInfo
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- CN103742378B CN103742378B CN201310705746.8A CN201310705746A CN103742378B CN 103742378 B CN103742378 B CN 103742378B CN 201310705746 A CN201310705746 A CN 201310705746A CN 103742378 B CN103742378 B CN 103742378B
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Abstract
A kind of radial plunger hydraulic pump adopting guiding valve flow, this pump is disposed radially five plunger groups, be arranged side by side in the side of plunger with the flow guiding valve of plunger group cooperating, the connection between flow guiding valve is realized by the runner that the pump housing is offered, and takes full advantage of the space in the pump housing; Be the straight line motion of plunger by pentacle weel by the translating rotation of eccentric shaft, rubbing surface adopts hydrodynamic lubrication, and frictional force is little, simple and reliable; The high-voltage oil liquid exported by expulsion valve is drawn, and rely on hydraulic coupling to make plunger backhaul, reverberation matrix method is steady, and noise is little, and the life-span is long; The plunger group of this pump is arranged on the pump housing from outside, can realize dismantling fast, be easy for installation and maintenance; Plunger axis is processed with damping hole, and can be directed on bottom surface by high-voltage oil liquid, plunger bottom surface is provided with sealing strip and grease chamber, and the fluid after step-down is full of grease chamber, can form lubricant film between pentacle weel and plunger bottom surface, reduces frictional force.
Description
Technical field
The invention belongs to radial plunger hydraulic pump technical field, be specifically related to a kind of radial plunger hydraulic pump adopting guiding valve flow.
Background technique
Design the important means that the oil hydraulic pump with better pressure and flow performance is development hydraulic transmission technology.
Radial plunger pump is that a class has that flow is large, wear and tear oil hydraulic pump that is little, volumetric efficiency advantages of higher, is widely used in the hydraulic systems such as die casting, injection moulding, forging and stamping.Common radial plunger pump, it is joined oily mode and mostly is one-way valve and joins oil or axle joins oil, and one-way valve is joined in the mode of oil to be needed to use spring part, because spring needs to be out of shape continually in the course of the work, therefore easily there is fatigue ruption, and work time noise and vibration larger; And the oil hydraulic pump adopting axle to join oil exists processing difficulties, and flow part not easily realizes the shortcoming of excellent sealing.In addition, existing radial plunger pump, the backhaul of its plunger generally adopts return plate structure or uses retracting spring, for return plate, owing to being rigid construction, therefore it and be driven plain between face and must leave certain gap, to ensure the smooth motion of plunger, this just needs to introduce elastic element in addition and makes up gap, otherwise just easily produces the leakage of fluid; For adopting the mode of spring return, the same with the spring in one-way valve, also there is destructible and the large shortcoming of noise.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the invention is to propose a kind of radial plunger hydraulic pump adopting guiding valve flow, there is compact structure, transmission is simple, reverberation matrix method is stablized, seal reliable, greasy property is good and be convenient to the advantage of maintenance.
In order to achieve the above object, the technological scheme that the present invention takes is:
A kind of radial plunger hydraulic pump adopting guiding valve flow, comprise the pump housing 2, the pump housing 2 is provided with five plunger groups 29, they are radially evenly distributed on same plane, each plunger group 29 comprises plunger 4 and plunger gland 1, backhaul directional post 31 on plunger 4 inserts in the backhaul guide sleeve 27 on plunger gland 1, can move vertically, plunger 4 center is provided with damping hole 30, plural circular arc sealing strip 33 is provided with bottom plunger 4, plunger 4 bottom surface is divided into some grease chambeies 32 by them, plunger 4 is inserted in the plunger cylinder holes 3 on the pump housing 2, plunger gland 1 is fixedly mounted on the pump housing 2, return pressure oil duct on plunger gland 1 and force feed runner 34, guiding valve mounting hole 26 and backhaul guide sleeve 27 top cavity volume are communicated with,
First pump end cap 18 and the second pump end cap 6 are fixedly mounted on the both sides of the pump housing 2 respectively, and the first axle head gland 21 and the second axle head gland 7 are fixedly mounted on the first pump end cap 18 and the second pump end cap 6 respectively;
Eccentric shaft 9 is provided with the first eccentric part 17 and the second eccentric part 8, their eccentric orientation differs 90 °;
Eccentric shaft 9 is arranged in the pump housing 2, plural first rolling bearing 20 is arranged on eccentric shaft 9 on the non-eccentricity shaft part of the pump housing 2 inside, separate with the first sleeve 19 between first rolling bearing 20, the inner ring of the first rolling bearing 20 props up the shoulder of eccentric shaft 9, first axle head gland 21 pushes down the outer ring of the first rolling bearing 20, plural second rolling bearing 15 is arranged in the second eccentric part 8 of eccentric shaft 9, separate with the second sleeve 14 between second rolling bearing 15, the inner ring of the second rolling bearing 15 side props up the shoulder on eccentric shaft 9, the inner ring of opposite side is compressed by the 4th sleeve 5, 4th sleeve 5 and plural 3rd rolling bearing 11 are arranged on the non-eccentricity shaft part of eccentric shaft 9, 3rd rolling bearing 11 inner ring pushes down the 4th sleeve 5, separate with the 3rd sleeve 10 between the 3rd adjacent rolling bearing 11, the outer ring of outermost 3rd rolling bearing 11 is compressed by the second axle head gland 7, first rolling bearing 20 and the 3rd rolling bearing 11 are bearing on the inner cylindrical surface of the first pump end cap 18 and the second pump end cap 6 respectively,
Pentacle weel 13 is arranged on the outer ring of the second rolling bearing 15, first pentacle weel gland 16 and the second pentacle weel gland 12 are fixedly mounted on the both sides of pentacle weel 13 respectively, its seam pushes down the outer ring of the second rolling bearing 15 of corresponding side respectively, and plunger 4 is pressed on the limit of pentacle weel 13 corresponding orientation by hydraulic coupling;
The pump housing 2 is evenly distributed with five guiding valve mounting holes 26 in radial direction, the orientation of its distribution is identical with the distribution orientation of plunger cylinder holes 3, the inside of each guiding valve mounting hole 26 is all provided with joins cunning valve 22, joins the first eccentric part 17 propping up eccentric shaft 9 bottom cunning valve 22;
The side of the pump housing 2 has been uniformly distributed circumferentially five plunger cavity turnover oilholes 24, its distribution orientation is identical with plunger cylinder holes 3, the plunger cylinder holes 3 of relevant position is communicated with guiding valve mounting hole 26 by each plunger cavity turnover oilhole 24 respectively, the opposite side of the pump housing 2 has been uniformly distributed circumferentially five plunger cavity oil inlet holes 23 and five plunger cavity oil outlets 25, their distribution orientation is identical with plunger cylinder holes 3, and occur in pairs, its distribution circle radius one is less than the distribution radius of plunger cavity turnover oilhole 24, one is greater than the distribution radius that plunger cavity passes in and out oilhole 24, they are all communicated with guiding valve mounting hole 26, each plunger cavity oil inlet hole 23 is interconnected by the oil suction runner 36 on the pump housing 2, fluid is sucked from outside by total inlet port 37, each plunger cavity oil outlet 25 is interconnected by the force feed runner 34 on the pump housing 2, by total oil drain out 35, fluid is discharged, simultaneously, force feed runner 34 on the pump housing 2 is communicated with the return pressure oil runner 28 on plunger gland 1, thus enable high-voltage oil liquid act on plunger 4 and join cunning valve 22, and high-voltage oil liquid enters the grease chamber 32 bottom plunger 4 by damping hole 30.
By installing guide ring and seal ring realizes leading and sealing between described plunger 4 and plunger cylinder holes 3.
By installing guide ring and seal ring realization guiding and sealing between described backhaul directional post 31 and backhaul guide sleeve 27.
The part that described plunger gland 1 inserts the pump housing 2 passes through seal with O ring.
By installing ball or roller reduces friction between described first eccentric part 17 of joining on cunning valve 22 and eccentric shaft 9.
The present invention has the following advantages:
1) compact structure, transmission is simple.This pump is disposed radially five plunger groups 29, is arranged side by side in the side of plunger 4 with the flow guiding valve of plunger group 29 cooperating, and the connection between flow guiding valve is realized by the runner that the pump housing 2 is offered, and takes full advantage of the space in the pump housing 2 like this.Be the straight line motion of plunger 4 by the translating rotation of eccentric shaft 9 by pentacle weel 13, rubbing surface adopts hydrodynamic lubrication, and frictional force is little, simple and reliable.
2) utilize hydraulic coupling backhaul, reverberation matrix method is stablized, and noise is little, the life-span is long.Traditional radial plunger hydraulic pump provides reverberation matrix method to realize the backhaul of plunger 4 by spring usually, complex structure, spring design difficulty, and need to-and-fro motion frequently due to spring, therefore easily there is fatigue ruption, radial plunger hydraulic pump in the present invention, eliminates spring structure, and the high-voltage oil liquid exported by expulsion valve is drawn, act on plunger 4, rely on hydraulic coupling to make plunger 4 backhaul, reverberation matrix method is steady, and has the advantage that noise is little and the life-span is long.
3) easy to maintenance.The plunger group 29 of this pump is arranged on the pump housing 2 by screw from outside, can realize dismantling fast, be easy for installation and maintenance.
4) between plunger 4 and pentacle weel 13, frictional force is little.Plunger 4 axis is processed with damping hole 30, can be directed on bottom surface by high-voltage oil liquid, plunger 4 bottom surface is provided with sealing strip 33 and grease chamber 32, and the fluid after step-down is full of grease chamber 32, lubricant film can be formed between pentacle weel 13 and plunger 4 bottom surface, reduce frictional force.
5) sealing is reliable.In the oil circuit of this pump, active part adopts guide ring, the seal ring combination seal of standard, and sealing is reliable, is beneficial to the volumetric efficiency improving pump.
Accompanying drawing explanation
Fig. 1 is axial sectional view of the present invention.
Fig. 2 is the sectional view in the A-A cross section of Fig. 1 of the present invention.
Fig. 3 is the axial sectional view of plunger 4 in the present invention.
Fig. 4 is the bottom view of plunger 4 in the present invention.
Fig. 5 is the radial view of eccentric shaft 9 in the present invention.
Fig. 6 is the sectional view in the B-B cross section of Fig. 1 of the present invention.
Fig. 7 is the sectional view in the C-C cross section of Fig. 1 of the present invention.
Fig. 8 is the sectional view in the D-D cross section of Fig. 1 of the present invention.
Fig. 9 is that the eccentric shaft 9 in Fig. 1 of the present invention turns over the axial sectional view after 90 °.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of radial plunger hydraulic pump adopting guiding valve flow, comprise the pump housing 2, the pump housing 2 is provided with five plunger groups 29, they are radially evenly distributed on same plane, each plunger group 29 comprises plunger 4 and plunger gland 1, backhaul directional post 31 on plunger 4 inserts in the backhaul guide sleeve 27 on plunger gland 1, can move vertically, plunger 4 center is provided with damping hole 30, plural circular arc sealing strip 33 is provided with bottom plunger 4, plunger 4 bottom surface is divided into some grease chambeies 32 by them, plunger 4 is inserted in the plunger cylinder holes 3 on the pump housing 2, plunger gland 1 is fixedly mounted on the pump housing 2 by screw, return pressure oil duct on plunger gland 1 and force feed runner 34, guiding valve mounting hole 26 and backhaul guide sleeve 27 top cavity volume are communicated with,
With reference to Fig. 1, the first pump end cap 18 and the second pump end cap 6 are screwed the both sides being arranged on the pump housing 2 respectively, and the first axle head gland 21 and the second axle head gland 7 are screwed respectively and are arranged on the first pump end cap 18 and the second pump end cap 6;
With reference to Fig. 5, eccentric shaft 9 is provided with the first eccentric part 17 and the second eccentric part 8, their eccentric orientation differs 90 °;
With reference to Fig. 1, eccentric shaft 9 is arranged in the pump housing 2, plural first rolling bearing 20 is arranged on eccentric shaft 9 on the non-eccentricity shaft part of the pump housing 2 inside, separate with the first sleeve 19 between first rolling bearing 20, the inner ring of the first rolling bearing 20 props up the shoulder of eccentric shaft 9, first axle head gland 21 pushes down the outer ring of the first rolling bearing 20, plural second rolling bearing 15 is arranged in the second eccentric part 8 of eccentric shaft 9, separate with the second sleeve 14 between second rolling bearing 15, the inner ring of the second rolling bearing 15 side props up the shoulder on eccentric shaft 9, the inner ring of opposite side is compressed by the 4th sleeve 5, 4th sleeve 5 and plural 3rd rolling bearing 11 are arranged on the non-eccentricity shaft part of eccentric shaft 9, 3rd rolling bearing 11 inner ring pushes down the 4th sleeve 5, separate with the 3rd sleeve 10 between the 3rd adjacent rolling bearing 11, the outer ring of outermost 3rd rolling bearing 11 is compressed by the second axle head gland 7, each part mentioned above realizes the axially locating to eccentric shaft 9 jointly, first rolling bearing 20 and the 3rd rolling bearing 11 are bearing on the inner cylindrical surface of the first pump end cap 18 and the second pump end cap 6 respectively, common realization is to the supporting of eccentric shaft 9,
See figures.1.and.2, pentacle weel 13 is arranged on the outer ring of the second rolling bearing 15, first pentacle weel gland 16 and the second pentacle weel gland 12 are screwed the both sides being arranged on pentacle weel 13 respectively, its seam pushes down the outer ring of the second rolling bearing 15 of corresponding side respectively, realize the axially locating of pentacle weel 13, plunger 4 is pressed on the limit of pentacle weel 13 corresponding orientation by hydraulic coupling;
With reference to Fig. 1 and Fig. 6, the pump housing 2 is evenly distributed with five guiding valve mounting holes 26 in radial direction, the orientation of its distribution is identical with the distribution orientation of plunger cylinder holes 3, and the inside of each guiding valve mounting hole 26 is all provided with joins cunning valve 22, joins the first eccentric part 17 propping up eccentric shaft 9 bottom cunning valve 22;
With reference to Fig. 1, Fig. 7 and Fig. 8, the side of the pump housing 2 has been uniformly distributed circumferentially five plunger cavity turnover oilholes 24, its distribution orientation is identical with plunger cylinder holes 3, the plunger cylinder holes 3 of relevant position is communicated with guiding valve mounting hole 26 by each plunger cavity turnover oilhole 24 respectively, the opposite side of the pump housing 2 has been uniformly distributed circumferentially five plunger cavity oil inlet holes 23 and five plunger cavity oil outlets 25, their distribution orientation is identical with plunger cylinder holes 3, and occur in pairs, its distribution circle radius one is less than the distribution radius of plunger cavity turnover oilhole 24, one is greater than the distribution radius that plunger cavity passes in and out oilhole 24, they are all communicated with guiding valve mounting hole 26, each plunger cavity oil inlet hole 23 is interconnected by the oil suction runner 36 on the pump housing 2, fluid is sucked from outside by total inlet port 37, each plunger cavity oil outlet 25 is interconnected by the force feed runner 34 on the pump housing 2, by total oil drain out 35, fluid is discharged, simultaneously, force feed runner 34 on the pump housing 2 is communicated with the return pressure oil runner 28 on plunger gland 1, thus enable high-voltage oil liquid act on plunger 4 and join cunning valve 22, and high-voltage oil liquid enters the grease chamber 32 bottom plunger 4 by damping hole 30.
By installing guide ring and seal ring realizes leading and sealing between described plunger 4 and plunger cylinder holes 3.
By installing guide ring and seal ring realization guiding and sealing between described backhaul directional post 31 and backhaul guide sleeve 27.
The part that described plunger gland 1 inserts the pump housing 2 passes through seal with O ring.
Can by installing ball or roller reduces friction between described first eccentric part 17 of joining on cunning valve 22 and eccentric shaft 9.
Working principle of the present invention:
See figures.1.and.2, when eccentric shaft 9 is operated by prime mover driven, by the second rolling bearing 15 by transmission of power to pentacle weel 13, because plunger 4 bottom surface and each limit of pentacle weel 13 are pressed close to, limit the rotation of pentacle weel 13, therefore pentacle weel 13 is only around center of rotation translation, and plunger 4 does straight reciprocating motion under the drive of pentacle weel 13 in respective plunger cylinder holes 3, can relative sliding between the surface of contact of plunger 4 and pentacle weel 13; In movement process, when plunger 4 moves in plunger cylinder holes 3, power is provided by each limit of pentacle weel 13, and when plunger 4 outwards moves from plunger cylinder holes 3, driving force is provided by the high pressure oil above backhaul directional post 31.
With reference to Fig. 1, Fig. 5 and Fig. 9, oil of joining of the present invention realizes by joining cunning valve 22, the first eccentric part 17 is pushed against under the effect of high pressure oil, the eccentric direction of the first eccentric part 17 and the second eccentric part 8 differs 90 °, this makes when the second eccentric part 8 drive plunger 4 moves upward, first eccentric part 17 just makes to join cunning valve 22 and is in upper, namely the cavity volume on plunger cylinder holes 3 top is allowed to be communicated with plunger cavity oil outlet 25, thus fluid can be discharged, when the second eccentric part 8 drive plunger 4 moves downward, first eccentric part 17 is join cunning valve 22 to be in bottom just, namely the cavity volume on plunger cylinder holes 3 top is allowed to be communicated with plunger cavity oil inlet hole 23, thus fluid is drawn in plunger cylinder holes 3.
Each plunger cavity oil inlet hole 23 is interconnected by the oil suction runner 36 on the pump housing 2, sucks fluid by total inlet port 37 from outside, each plunger cavity oil outlet 25 is interconnected by the force feed runner 34 on the pump housing 2, by total oil drain out 35, fluid is discharged, simultaneously, force feed runner 34 on the pump housing 2 is communicated with the return pressure oil runner 28 on plunger gland 1, high-voltage oil liquid acts on backhaul directional post 31, be pressed in the first eccentric part 17 of eccentric shaft 9 by joining cunning valve 22, plunger 4 is pressed on pentacle weel 13, and high-voltage oil liquid enters the grease chamber 32 bottom plunger 4 by damping hole 30, fluid after step-down is full of grease chamber 32, lubricant film can be formed between pentacle weel 13 and plunger 4 bottom surface, reduce frictional force.
Claims (5)
1. one kind adopts the radial plunger hydraulic pump of guiding valve flow, comprise the pump housing (2), it is characterized in that: five plunger groups (29) are installed on the pump housing (2), they are radially evenly distributed on same plane, each plunger group (29) comprises plunger (4) and plunger gland (1), backhaul directional post (31) on plunger (4) inserts in the backhaul guide sleeve (27) on plunger gland (1), can move vertically, plunger (4) center is provided with damping hole (30), plunger (4) bottom is provided with plural circular arc sealing strip (33), plunger (4) bottom surface is divided into some grease chambeies (32) by them, plunger (4) is inserted in the plunger cylinder holes (3) on the pump housing (2), plunger gland (1) is fixedly mounted on the pump housing (2), return pressure oil duct on plunger gland (1) and force feed runner (34), guiding valve mounting hole (26) and backhaul guide sleeve (27) top cavity volume are communicated with,
First pump end cap (18) and the second pump end cap (6) are fixedly mounted on the both sides of the pump housing (2) respectively, and the first axle head gland (21) and the second axle head gland (7) are fixedly mounted on the first pump end cap (18) and the second pump end cap (6) respectively;
Eccentric shaft (9) is provided with the first eccentric part (17) and the second eccentric part (8), their eccentric orientation differs 90 °;
Eccentric shaft (9) is arranged in the pump housing (2), plural first rolling bearing (20) is arranged on eccentric shaft (9) on the non-eccentricity shaft part that the pump housing (2) is inner, separate with the first sleeve (19) between first rolling bearing (20), the inner ring of the first rolling bearing (20) props up the shoulder of eccentric shaft (9), first axle head gland (21) pushes down the outer ring of the first rolling bearing (20), plural second rolling bearing (15) is arranged in second eccentric part (8) of eccentric shaft (9), separate with the second sleeve (14) between second rolling bearing (15), the inner ring of the second rolling bearing (15) side props up the shoulder on eccentric shaft (9), the inner ring of opposite side is compressed by the 4th sleeve (5), 4th sleeve (5) and plural 3rd rolling bearing (11) are arranged on the non-eccentricity shaft part of eccentric shaft (9), 3rd rolling bearing (11) inner ring pushes down the 4th sleeve (5), separate with the 3rd sleeve (10) between the 3rd adjacent rolling bearing (11), the outer ring of outermost 3rd rolling bearing (11) is compressed by the second axle head gland (7), first rolling bearing (20) and the 3rd rolling bearing (11) are bearing on the inner cylindrical surface of the first pump end cap (18) and the second pump end cap (6) respectively,
Pentacle weel (13) is arranged on the outer ring of the second rolling bearing (15), first pentacle weel gland (16) and the second pentacle weel gland (12) are fixedly mounted on the both sides of pentacle weel (13) respectively, its seam pushes down the outer ring of second rolling bearing (15) of corresponding side respectively, and plunger (4) is pressed on the limit of pentacle weel (13) corresponding orientation by hydraulic coupling;
The pump housing (2) is evenly distributed with five guiding valve mounting holes (26) in radial direction, the orientation of its distribution is identical with the distribution orientation of plunger cylinder holes (3), the inside of each guiding valve mounting hole (26) is all provided with joins cunning valve (22), joins the first eccentric part (17) that cunning valve (22) bottom props up eccentric shaft (9);
The side of the pump housing (2) has been uniformly distributed circumferentially five plunger cavities turnover oilhole (24), its distribution orientation is identical with plunger cylinder holes (3), the plunger cylinder holes (3) of relevant position is communicated with guiding valve mounting hole (26) by each plunger cavity turnover oilhole (24) respectively, the opposite side of the pump housing (2) has been uniformly distributed circumferentially five plunger cavity oil inlet holes (23) and five plunger cavity oil outlets (25), their distribution orientation is identical with plunger cylinder holes (3), and occur in pairs, its distribution circle radius one is less than the distribution radius of plunger cavity turnover oilhole (24), one is greater than the distribution radius that plunger cavity passes in and out oilhole (24), they are all communicated with guiding valve mounting hole (26), each plunger cavity oil inlet hole (23) is interconnected by the oil suction runner (36) on the pump housing (2), fluid is sucked from outside by total inlet port (37), each plunger cavity oil outlet (25) is interconnected by the force feed runner (34) on the pump housing (2), by total oil drain out (35), fluid is discharged, simultaneously, force feed runner (34) on the pump housing (2) is communicated with return pressure oil runner (28) on plunger gland (1), thus enable high-voltage oil liquid act on plunger (4) and join cunning valve (22), and high-voltage oil liquid enters the grease chamber (32) of plunger (4) bottom by damping hole (30).
2. a kind of radial plunger hydraulic pump adopting guiding valve flow according to claim 1, is characterized in that: by installing guide ring and seal ring realizes leading and sealing respectively between described plunger (4) and plunger cylinder holes (3).
3. a kind of radial plunger hydraulic pump adopting guiding valve flow according to claim 1, is characterized in that: realize guiding and sealing respectively by installation guide ring and seal ring between described backhaul directional post (31) and backhaul guide sleeve (27).
4. a kind of radial plunger hydraulic pump adopting guiding valve flow according to claim 1, is characterized in that: the part that described plunger gland (1) inserts the pump housing (2) passes through seal with O ring.
5. a kind of radial plunger hydraulic pump adopting guiding valve flow according to claim 1, is characterized in that: by installing ball or roller reduces friction between described first eccentric part (17) of joining on cunning valve (22) and eccentric shaft (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310705746.8A CN103742378B (en) | 2013-12-19 | 2013-12-19 | A kind of radial plunger hydraulic pump adopting guiding valve flow |
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| CN201310705746.8A CN103742378B (en) | 2013-12-19 | 2013-12-19 | A kind of radial plunger hydraulic pump adopting guiding valve flow |
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| CN103742378A CN103742378A (en) | 2014-04-23 |
| CN103742378B true CN103742378B (en) | 2016-01-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104259853B (en) * | 2014-09-11 | 2016-08-24 | 河南飞龙(芜湖)汽车零部件有限公司 | A kind of brake pump piston cylinder parts automatic assembling machine |
| CN106286110B (en) * | 2016-08-17 | 2018-04-03 | 中国矿业大学 | Pendulum cylinder-type low-speed big high water base fluid pressure motor self-balancing valve type flow-distribution mechanism |
| CN108302033B (en) * | 2018-03-04 | 2024-05-14 | 太原理工大学 | Axial telescopic cylinder assembly of high water-based plunger type hydraulic pump |
| CN108266372B (en) * | 2018-03-04 | 2024-02-20 | 太原理工大学 | Valve type flow distribution radial plunger emulsion pump |
| CN112412722B (en) * | 2020-11-05 | 2022-07-05 | 太原理工大学 | High-speed active lubrication radial static balance plunger pump for high-water-based medium |
| CN115539341B (en) * | 2022-10-31 | 2023-07-04 | 宁波钱湖石油设备有限公司 | Modularized reciprocating pump |
| US12055124B1 (en) | 2023-05-26 | 2024-08-06 | Huaqiao University | Four-quadrant radial piston hydraulic device and working method thereof |
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| US5979501A (en) * | 1996-12-11 | 1999-11-09 | Korea Institute Of Machinery & Materials | Fluid distributing apparatus for piston-type hydraulic motors or pumps |
| DE19729790A1 (en) * | 1997-07-11 | 1999-01-14 | Bosch Gmbh Robert | Radial piston pump for high-pressure fuel supply |
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| CN103742378A (en) | 2014-04-23 |
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