CN104895754A - An axial plunger and radial plunger combined hydraulic pump - Google Patents
An axial plunger and radial plunger combined hydraulic pump Download PDFInfo
- Publication number
- CN104895754A CN104895754A CN201510161222.6A CN201510161222A CN104895754A CN 104895754 A CN104895754 A CN 104895754A CN 201510161222 A CN201510161222 A CN 201510161222A CN 104895754 A CN104895754 A CN 104895754A
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- plunger
- radial
- axial
- rotor
- hydraulic pump
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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
Technical field
The invention belongs to pluger type hydraulic pump technical field, particularly the oil hydraulic pump of a kind of axial plunger and radial plunger compound.
Background technique
Hydraulics, as an importance of modern industrial technology, various industry equipment, running mechanism and boats and ships, aircraft is obtained for extensive use.In hydraulic system, the function of oil hydraulic pump is the pressure energy mechanical energy of motor or internal combustion engine prime movers being converted to liquid, provides pressure oil and drives executive component work, belong to Hydraulic power units to system.
Plunger pump is an important device of hydraulic system.It relies on plunger to-and-fro motion in cylinder body, makes the volume of seal operation cavity volume change to realize oil suction, force feed.Plunger pump has that rated pressure is high, compact structure, efficiency are high and the advantage such as Flow-rate adjustment is convenient, is widely used in the occasion that high pressure, large discharge and flow need to regulate, in such as hydraulic press, engineering machinery and boats and ships.
Current plunger pump can be divided into axial piston pump and radial plunger pump according to the arrangement form of its plunger.The plunger pump of these two kinds of forms is all utilize rotor turns, makes plunger to-and-fro motion in plunger cavity, realizes the process of oil suction and oil extraction.
Radial plunger pump is compared with axial piston pump, and efficiency is lower, and radial dimension is large, and rotary inertia is large, and suction capacity is poor, and fluid-distributing axial is subject to the effect of radial uneven hydraulic coupling, and be easy to wearing and tearing, these limit the raising of rotating speed and pressure, therefore application area is less.
Axial piston pump is compared with radial plunger pump, and plunger is by connecting rod brought into motion, and the very little permission cylinder body of force in radial has larger swing, the overturn moment that cylinder body receives is very little, cylinder body end face and oil distribution casing are fitted evenly, firm in structure, good impact resistance, eccentric thrust load is born due to Large Copacity thrust-bearing must be adopted, and bearing life is low, becoming the weak link of pump, there is slip speed when rotating in cylinder body and transmission shaft, thus, when Large Copacity, allow rotating speed low.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide the oil hydraulic pump of a kind of axial plunger and radial plunger compound, compact structure, output flow is large, and pressure is high, and flow pressure is adjustable in the course of the work.
In order to achieve the above object, technological scheme of the present invention is as follows:
The oil hydraulic pump of a kind of axial plunger and radial plunger compound, comprise transmission shaft 1, transmission shaft 1 is connected with rotor 2, radial plunger 3 is arranged in the radial column consent of rotor 2, axial plunger 4 is arranged in the axial columns consent of rotor 2, radial plunger 3 withstands on the internal surface of stator 6 by piston shoes 5, stator 6 is connected with swing frame 7, one end of axial plunger 4 withstands on swash plate 8, spring 9 is enclosed within 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 the other end is pressed on rotor 2, thrust plate 11 is arranged on the opposite side of rotor 2, withstand on shell 13 outside thrust plate 11, swash plate 8 withstands on end cap 12,
Each radial column consent all has an axial columns consent corresponding with it, and the axial columns consent that radial column consent is corresponding with it is respectively connected, and being connected to thrust plate 11 by the runner on rotor 2, each radial plunger 3 is all synchronous with corresponding axial plunger 4 suction oil.
The oil hydraulic pump of axial plunger and radial plunger compound is separately through the oil drain quantity regulating the inclination angle δ of swash plate 8 to regulate axial plunger 4 one-period, or oil drain quantity in radial plunger 3 one-period is regulated separately through the offset size regulating stator 6 with rotor 2, or regulate the discharge capacity of axial plunger 4 and radial plunger 3, thus reach the total displacement of the oil hydraulic pump regulating whole axial plunger and radial plunger compound simultaneously.
Advantage of the present invention is: the range of flow that this pump can regulate is larger, and pump structure is compacter, and has possessed the advantage of axial piston pump and radial plunger pump simultaneously.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to accompanying drawing, the oil hydraulic pump of a kind of axial plunger and radial plunger compound, comprise transmission shaft 1, transmission shaft 1 is connected with rotor 2, radial plunger 3 is arranged in the radial column consent of rotor 2, axial plunger 4 is arranged in the axial columns consent of rotor 2, radial plunger 3 withstands on the internal surface of stator 6 by piston shoes 5, stator 6 is connected with swing frame 7, one end of axial plunger 4 withstands on swash plate 8, spring 9 is enclosed within 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 the other end is pressed on rotor 2, thrust plate 11 is arranged on the opposite side of rotor 2, withstand on shell 13 outside thrust plate 11, swash plate 8 withstands on end cap 12,
Each radial column consent all has an axial columns consent corresponding with it, and the axial columns consent that radial column consent is corresponding with it is respectively connected, and being connected to thrust plate 11 by the runner on rotor 2, each radial plunger 3 is all synchronous with corresponding axial plunger 4 suction oil.
The oil hydraulic pump of axial plunger and radial plunger compound is separately through the oil drain quantity regulating the inclination angle δ of swash plate 8 to regulate axial plunger 4 one-period, or oil drain quantity in radial plunger 3 one-period is regulated separately through the offset size regulating stator 6 with rotor 2, or regulate the discharge capacity of axial plunger 4 and radial plunger 3, thus reach the total displacement of the oil hydraulic pump regulating whole axial plunger and radial plunger compound simultaneously.
Working principle of the present invention is:
During hydraulic pump works, axial plunger 4 and radial plunger 3 are reciprocating in the axial columns consent and radial column consent of rotor 2 respectively, realize the change of sealed volume, and axial plunger 4 and radial plunger 3 are followed rotor 2 and are moved in a circle, rotor 2 often circles, each axial plunger 4 and radial plunger 3 all make a round trip, complete an oil suction and oil extraction process, hydraulic oil enters plunger hole in through thrust plate 11 inner passage when rotor 2 forwards upper half to by pump housing inlet port, after rotor 2 forwards lower half boosting to, discharge from the zone of high pressure of thrust plate 11 Lower Half through oil drain out, supply actuator.
Claims (2)
1. the oil hydraulic pump of an axial plunger and radial plunger compound, comprise transmission shaft 1, transmission shaft (1) is connected with rotor (2), it is characterized in that: radial plunger (3) is arranged in the radial column consent of rotor (2), axial plunger (4) is arranged in the axial columns consent of rotor (2), radial plunger (3) withstands on the internal surface of stator (6) by piston shoes (5), stator (6) is connected with swing frame (7), one end of axial plunger (4) withstands on swash plate (8), spring (9) is enclosed within 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) the other end is pressed on rotor (2), thrust plate (11) is arranged on the opposite side of rotor (2), thrust plate (11) outside withstands on shell (13), swash plate (8) withstands on end cap (12),
Each radial column consent all has an axial columns consent corresponding with it, and the axial columns consent that radial column consent is corresponding with it is respectively connected, and being connected to thrust plate (11) by the runner on rotor (2), each radial plunger (3) is all synchronous with corresponding axial plunger (4) suction oil.
2. the oil hydraulic pump of a kind of axial plunger according to claim 1 and radial plunger compound, it is characterized in that: the oil hydraulic pump of axial plunger and radial plunger compound is separately through regulating the inclination angle δ of swash plate (8) to regulate the oil drain quantity of axial plunger (4) one-period, or separately through regulating stator (6) and the offset size of rotor (2) to regulate oil drain quantity in radial plunger (3) one-period, or regulate the discharge capacity of axial plunger (4) and radial plunger (3) simultaneously, thus reach the total displacement of the oil hydraulic pump regulating whole axial plunger and radial plunger compound.
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895754A true CN104895754A (en) | 2015-09-09 |
| CN104895754B CN104895754B (en) | 2017-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510161222.6A Expired - Fee Related CN104895754B (en) | 2015-04-07 | 2015-04-07 | An axial plunger and radial plunger combined hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895754B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257520A (en) * | 2015-09-29 | 2016-01-20 | 北京精密机电控制设备研究所 | High-reliability displacement gear grading mechanism used for pump |
Citations (7)
| 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 |
| 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 |
| US20080098732A1 (en) * | 2006-10-26 | 2008-05-01 | Grosskopf Andrew P | Hydraulic differential for integrated drive generator |
| 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 |
-
2015
- 2015-04-07 CN CN201510161222.6A patent/CN104895754B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| 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 |
| US20080098732A1 (en) * | 2006-10-26 | 2008-05-01 | Grosskopf Andrew P | Hydraulic differential for integrated drive generator |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257520A (en) * | 2015-09-29 | 2016-01-20 | 北京精密机电控制设备研究所 | High-reliability displacement gear grading mechanism used for pump |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104895754B (en) | 2017-01-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20190407 |
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| CF01 | Termination of patent right due to non-payment of annual fee |