CN104895754B - An axial plunger and radial plunger combined hydraulic pump - Google Patents

An axial plunger and radial plunger combined hydraulic pump Download PDF

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Publication number
CN104895754B
CN104895754B CN201510161222.6A CN201510161222A CN104895754B CN 104895754 B CN104895754 B CN 104895754B CN 201510161222 A CN201510161222 A CN 201510161222A CN 104895754 B CN104895754 B CN 104895754B
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CN
China
Prior art keywords
plunger
axial
radial
rotor
hydraulic pump
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510161222.6A
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Chinese (zh)
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CN104895754A (en
Inventor
范淑琴
赵升吨
杨雪松
曹苗
李省
李靖祥
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Xian Jiaotong University
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Xian Jiaotong University
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Publication date
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Priority to CN201510161222.6A priority Critical patent/CN104895754B/en
Publication of CN104895754A publication Critical patent/CN104895754A/en
Application granted granted Critical
Publication of CN104895754B publication Critical patent/CN104895754B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention provides an axial plunger and radial plunger combined hydraulic pump comprising a transmission shaft connected with a rotor. Radial plungers are installed in radial plunger holes of the rotor and axial plungers are installed in axial plunger holes of the rotor. The radial plungers are pressed against the inner surface of a stator through piston shoes. The stator is connected with a swing frame. One end of each axial plunger is pressed against a swash plate. A spring is put around the transmission shaft. One end of the spring pushes a pressing plate to press the axial plungers on the swash plate. The other end of the spring is pressed against the rotor. A valve plate is installed on the other side of the rotor. The radial plunger holes and the axial plunger holes are corresponding to each other in a one-to-one manner. The radial plunger holes are communicated the corresponding axial plunger holes and connected to the valve plate via flow channels in the rotor. Each radial plunger and the corresponding axial plunger are synchronous in oil intake and oil discharge. The discharge quantities of the axial plungers and the radial plungers can be adjusted independently or simultaneously. The axial plunger and radial plunger combined hydraulic pump integrates the advantages of axial plunger pumps and radial plunger pumps.

Description

The hydraulic pump that a kind of axial plunger is compound with radial plunger
Technical field
The invention belongs to pluger type hydraulic pump technical field, particularly to a kind of axial plunger and footpath To the hydraulic pump that plunger is compound.
Background technology
Hydraulic technique as an importance of modern industrial technology, various industrial equipments, It is obtained for extensively application on walking machine and boats and ships, aircraft.In hydraulic system, hydraulic pressure The function of pump is that the mechanical energy of motor or internal combustion engine prime movers is converted into the pressure of liquid Can, provide pressure oil to system and drive executive component to work, belonging to Hydraulic power units.
Plunger displacement pump is an important device of hydraulic system.It relies on plunger back and forth to transport in cylinder body Dynamic, make the volume of seal operation cavity volume change and realize oil suction, force feed.Plunger displacement pump has The advantages such as rated pressure height, compact conformation, efficiency height and Flow-rate adjustment convenience, are widely used The occasion of regulation, such as hydraulic press, engineering machinery and ship is needed in high pressure, big flow and flow In oceangoing ship.
Plunger displacement pump can be divided into axial plunger pump and radial column according to the arrangement form of its plunger at present Plug pump.The plunger displacement pump of both forms, is all to utilize rotor to rotate so that plunger is at plunger cavity Interior reciprocating motion, it is achieved oil suction and the process of oil extraction.
Radial plunger pump is compared with axial plunger pump, inefficient, and radial dimension is big, rotates used Amount is big, and suction capacity is poor, and fluid-distributing axial is acted on by the most uneven hydraulic coupling, it is easy to Abrasion, these limit the raising of rotating speed and pressure, therefore range of application is less.
Axial plunger pump is compared with radial plunger pump, and plunger is driven motion by connecting rod, suffered Radial force the least permission cylinder body has bigger swing, and moment that what cylinder body received topple over is the least, cylinder body end Face is with oil distribution casing laminating uniformly, firm in structure, good impact resistance, owing to Large Copacity must be used to push away Power bearing bears eccentric axial load, and bearing life is low, becomes the weak link of pump, cylinder Slip speed is there is in body and power transmission shaft when rotating, thus when Large Copacity, it is allowed to rotating speed is low.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of axial The hydraulic pump that plunger is compound with radial plunger, compact conformation, output flow is big, and pressure is high, and And flow pressure is adjustable in the course of the work.
In order to achieve the above object, technical scheme is as follows:
The hydraulic pump that a kind of axial plunger is compound with radial plunger, including power transmission shaft 1, power transmission shaft 1 Being connected with rotor 2, radial plunger 3 is arranged in the radial column consent of rotor 2, axial plunger 4 Being arranged in the axial columns consent of rotor 2, radial plunger 3 withstands on the interior table of stator 6 by piston shoes 5 Face, stator 6 is connected with swing span 7, and one end of axial plunger 4 withstands on swash plate 8, and spring 9 overlaps On power transmission shaft 1, spring 9 one end heads on pressing plate 10 and is pressed on swash plate 8 by axial plunger 4, spring 9 other ends are pressed on rotor 2, and valve plate 11 is arranged on the opposite side of rotor 2, outside valve plate 11 Side withstands on shell 13, and swash plate 8 withstands on end cap 12,
Each radial column consent all has a corresponding axial columns consent, and radial column The most corresponding axial columns consent of consent is connected, and is connected by the runner on rotor 2 To valve plate 11, each radial plunger 3 all synchronizes with corresponding axial plunger 4 suction oil.
The hydraulic pump that axial plunger and radial plunger are combined is separately through the inclination angle δ of regulation swash plate 8 Regulate the oil drain quantity in 4 one cycles of axial plunger, or separately through regulation stator 6 and rotor 2 Offset size regulate the oil drain quantity in 3 one cycles of radial plunger, or regulate axle simultaneously To the discharge capacity of plunger 4 with radial plunger 3, thus reach to regulate whole axial plunger and radial plunger The total displacement of compound hydraulic pump.
Advantages of the present invention is: the range of flow that this pump can regulate is bigger, and pump structure is more Compact, and the advantage being provided simultaneously with axial plunger pump and radial plunger pump.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in detail.
Referring to the drawings, the hydraulic pump that a kind of axial plunger is compound with radial plunger, including power transmission shaft 1, Power transmission shaft 1 is connected with rotor 2, and radial plunger 3 is arranged in the radial column consent of rotor 2, axially Plunger 4 is arranged in the axial columns consent of rotor 2, and radial plunger 3 withstands on stator 6 by piston shoes 5 Inner surface, stator 6 is connected with swing span 7, and one end of axial plunger 4 withstands on swash plate 8, bullet Spring 9 is enclosed within power transmission shaft 1, and spring 9 one end heads on pressing plate 10 and is pressed on swash plate 8 by axial plunger 4, Spring 9 other end is pressed on rotor 2, and valve plate 11 is arranged on the opposite side of rotor 2, valve plate Withstanding on shell 13 outside 11, swash plate 8 withstands on end cap 12,
Each radial column consent all has a corresponding axial columns consent, and radial column The most corresponding axial columns consent of consent is connected, and is connected by the runner on rotor 2 To valve plate 11, each radial plunger 3 all synchronizes with corresponding axial plunger 4 suction oil.
The hydraulic pump that axial plunger and radial plunger are combined is separately through the inclination angle δ of regulation swash plate 8 Regulate the oil drain quantity in 4 one cycles of axial plunger, or separately through regulation stator 6 and rotor 2 Offset size regulate the oil drain quantity in 3 one cycles of radial plunger, or regulate axle simultaneously To the discharge capacity of plunger 4 with radial plunger 3, thus reach to regulate whole axial plunger and radial plunger The total displacement of compound hydraulic pump.
The operation principle of the present invention is:
During hydraulic pump works, axial plunger 4 and radial plunger 3 are respectively at the axial columns consent of rotor 2 Reciprocating with in radial column consent, it is achieved the change of sealed volume, and axial plunger 4 Follow rotor 2 with radial plunger 3 to move in a circle, rotor 2 each rotation, each axial plunger 4 All making a round trip with radial plunger 3, complete an oil suction and oil extraction process, hydraulic oil is by the pump housing Inlet port enters when rotor 2 forwards upper half in plunger hole through valve plate 11 inner passage, when After rotor 2 forwards lower half boosting to, discharge from the higher-pressure region of valve plate 11 lower half through oil drain out, Supply actuator.

Claims (2)

1. the hydraulic pump that axial plunger is compound with radial plunger, including power transmission shaft (1), Power transmission shaft (1) is connected with rotor (2), it is characterised in that: radial plunger (3) is arranged on In the radial column consent of rotor (2), axial plunger (4) is arranged on the axial of rotor (2) In plunger hole, radial plunger (3) withstands on the inner surface of stator (6) by piston shoes (5), Stator (6) is connected with swing span (7), and one end of axial plunger (4) withstands on swash plate (8) On, spring (9) is enclosed within power transmission shaft (1), and spring (9) one end heads on pressing plate (10) Being pressed on swash plate (8) by axial plunger (4), spring (9) other end is pressed in rotor (2) On, valve plate (11) is arranged on the opposite side of rotor (2), top, valve plate (11) outside On shell (13), swash plate (8) withstands on end cap (12),
Each radial column consent all has a corresponding axial columns consent, and radial column The most corresponding axial columns consent of consent is connected, and by the runner on rotor (2) Being connected to valve plate (11), each radial plunger (3) is inhaled with corresponding axial plunger (4) Oil extraction all synchronizes.
The hydraulic pump that a kind of axial plunger the most according to claim 1 is compound with radial plunger, It is characterized in that: the hydraulic pump that axial plunger and radial plunger are combined is separately through regulation swash plate (8) inclination angle δ regulates the oil drain quantity in (4) cycles of axial plunger, or separately through Regulation stator (6) regulates radial plunger (3) with the offset size of rotor (2) Oil drain quantity in cycle, or regulate the discharge capacity of axial plunger (4) and radial plunger (3) simultaneously, Thus reach to regulate the total displacement of the whole axial plunger hydraulic pump compound with radial plunger.
CN201510161222.6A 2015-04-07 2015-04-07 An axial plunger and radial plunger combined hydraulic pump Expired - Fee Related CN104895754B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510161222.6A CN104895754B (en) 2015-04-07 2015-04-07 An axial plunger and radial plunger combined hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510161222.6A CN104895754B (en) 2015-04-07 2015-04-07 An axial plunger and radial plunger combined hydraulic pump

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CN104895754A CN104895754A (en) 2015-09-09
CN104895754B true CN104895754B (en) 2017-01-11

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105257520B (en) * 2015-09-29 2017-06-13 北京精密机电控制设备研究所 A kind of pump is with highly reliable discharge capacity stepping mechanism

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311501A1 (en) * 1992-04-07 1993-10-14 Rexroth Mannesmann Gmbh Multispeed hydraulic drive system - consists of radial and axial reciprocating machines connected by distributor disc
CN200952456Y (en) * 2006-08-29 2007-09-26 陕西航天动力高科技股份有限公司 Axial variable plunger pump
CN101187360A (en) * 2006-11-16 2008-05-28 上海远成机电工具制造有限公司 Super-high-pressure pressure test pump
EP2006544A2 (en) * 2007-06-18 2008-12-24 Weber-Hydraulik GmbH Piston pump with variable eccentricity
CN101358585A (en) * 2008-09-11 2009-02-04 谌小堰 Oblique crankshaft Variable plunger pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04347380A (en) * 1991-05-22 1992-12-02 Honda Motor Co Ltd Radial plunger unit with compression ratio adjusting mechanism
US7472547B2 (en) * 2006-10-26 2009-01-06 Hamilton Sundstrand Corporation Hydraulic differential for integrated drive generator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311501A1 (en) * 1992-04-07 1993-10-14 Rexroth Mannesmann Gmbh Multispeed hydraulic drive system - consists of radial and axial reciprocating machines connected by distributor disc
CN200952456Y (en) * 2006-08-29 2007-09-26 陕西航天动力高科技股份有限公司 Axial variable plunger pump
CN101187360A (en) * 2006-11-16 2008-05-28 上海远成机电工具制造有限公司 Super-high-pressure pressure test pump
EP2006544A2 (en) * 2007-06-18 2008-12-24 Weber-Hydraulik GmbH Piston pump with variable eccentricity
CN101358585A (en) * 2008-09-11 2009-02-04 谌小堰 Oblique crankshaft Variable plunger pump

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