CN101581298A - Inclined plunger hydraulic pump/motor - Google Patents
Inclined plunger hydraulic pump/motor Download PDFInfo
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- CN101581298A CN101581298A CNA2008100374786A CN200810037478A CN101581298A CN 101581298 A CN101581298 A CN 101581298A CN A2008100374786 A CNA2008100374786 A CN A2008100374786A CN 200810037478 A CN200810037478 A CN 200810037478A CN 101581298 A CN101581298 A CN 101581298A
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- plunger
- ball
- socket
- hydraulic pump
- mandrel
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Abstract
The invention relates to an inclined plunger hydraulic pump/motor which comprises a casing, an end cover and a rear cover that are respectively fixed at the front end and the rear end of the casing, and a main shaft, a plunger part, a core shaft, a cylinder body and a port plate that are arranged in the casing, wherein a plunger is arranged between an oil cylinder of the cylinder body and a plunger ball socket of a ball socket plate of a main shaft only, the plunger is provided with a ball head and a tapered rod, wherein one end of the ball head is matched with the plunger ball socket, and the tapered rod is arranged in the oil cylinder and gradually thins towards the ball head, the circumference of the end part of the tapered rod is provided with a plunger ring leading the end part of the tapered rod to be sealed with the oil cylinder. The inclined plunger hydraulic pump/motor has big inclined angle, large delivery volume, smaller volume and more compact structure under the same delivery volume, less parts compared with the prior art, and more reliable movement property without easily occurring in failure.
Description
Technical field
The present invention relates to a kind of hydraulic pump/motor, relate in particular to a kind of inclined plunger hydraulic pump/motor.
Background technique
At present, as shown in Figure 1, existing inclined plunger hydraulic pump/motor is mainly by housing 100, be fixed on the bonnet 200 of housing 100 afterbodys and front end, end cap 900, be installed in the main shaft 300 in the housing 100 successively, mandrel 400, plunger part 500, formations such as cylinder body 600 and thrust plate 700, wherein, plunger part 500 is formed by plunger 501 and connecting rod 502 hinged roll extrusion, the bead head 503 of connecting rod 502 is arranged in the ball-and-socket 505 of plunger 501 consents 504 bottoms, the big bulb 504 of connecting rod 502 is arranged in the plunger ball-and-socket 302 of the ball-and-socket dish 301 of main shaft 300, and plunger 501 is arranged in the oil cylinder 601 of cylinder body 600.Such structure, on the one hand, because plunger part is made of plunger 501 and 502 two parts of connecting rod, in movement process, form easily between the oil cylinder 601 of plunger 501 and cylinder body 600 and plunger 501 and the connecting rod 502 and interfere, this inclined shaft angle that has limited inclined plunger hydraulic pump/motor becomes big, also just limited the discharge capacity of inclined plunger hydraulic pump/motor, that is to say, if want to increase the discharge capacity of inclined plunger hydraulic pump,, can only increase discharge capacity by the volume that increases pump because the inclined shaft angle can not become greatly, therefore, the volume of existing inclined plunger hydraulic pump/motor is generally all bigger; On the other hand, plunger part 500 parts are many, also cause the motion credibility of inclined plunger hydraulic pump/motor not high easily, break down easily, and this has increased user's maintenance cost.
Summary of the invention
Technical problem to be solved by this invention provides that a kind of size is little, compact structure, discharge capacity are big, and motion credibility is strong, and the inclined plunger hydraulic pump/motor that is difficult for breaking down is to overcome the defective that prior art exists.
To achieve these goals, inclined plunger hydraulic pump/motor of the present invention adopts following technological scheme:
A kind of inclined plunger hydraulic pump/motor, comprise the clino-axis type housing, be separately fixed at the end cap of housing front end and tail end, bonnet, be installed in the main shaft in the housing, mandrel, cylinder body and thrust plate, wherein the center of cylinder body has the mandrel hole, has oil cylinder around being positioned at the mandrel hole, main shaft one end stretches out outside the housing, the other end is the ball-and-socket dish, has the center ball-and-socket on the end face of ball-and-socket dish, and be positioned at plunger ball-and-socket around the ball-and-socket of center, one end bulb of described mandrel is positioned at the center ball-and-socket of ball-and-socket dish, the mandrel hole that the other end is positioned at cylinder body cooperatively interacts cylinder body and thrust plate, it is characterized in that: only be provided with plunger between the plunger ball-and-socket of the ball-and-socket dish of the oil cylinder of described cylinder body and main shaft, described plunger has the bulb that an end cooperates with the plunger ball-and-socket and is located in the oil cylinder to the gradually thin tapered rod of bulb, and the end side face of described tapered rod is provided with the plunger ring that makes tapered rod end and cylinder seal.
Owing to only be provided with plunger between the plunger ball-and-socket of the ball-and-socket dish of oil cylinder and main shaft, the main body of this plunger is a tapered rod, when just making inclined plunger hydraulic pump/motor work, this plunger axially moves in oil cylinder and can swing back and forth around the oil cylinder center line simultaneously, as long as it is big that the conical surface angle of tapered rod becomes, it is big that the amplitude that swings back and forth of plunger also just becomes, the inclined shaft angle of inclined plunger hydraulic pump/motor also can be designed to bigger angle so, therefore, it is big that the inclined plunger hydraulic pump/motor of structure of the present invention has the inclined shaft angle, discharge capacity is big, and under the same displacement situation, volume can be littler, the advantage that structure is compact more, and the inclined plunger hydraulic pump/motor of the relative prior art of part that adopts is fewer, so exercise performance is more reliable, is not easy to break down.
Description of drawings
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of inclined plunger hydraulic pump/motor of the prior art.
Fig. 2 is the structural representation of inclined plunger hydraulic pump/motor of the present invention.
Among the figure:
100, housing 101, actuator port 102, leakage hole 103, plug screw
200, bonnet 201, screw 300, main shaft 301, ball-and-socket dish
302, plunger ball-and-socket 303, mandrel ball-and-socket 304, pressing plate 400, mandrel
401, bulb 402, cylindrical bar 403, pad 500, plunger part
501, plunger 502, connecting rod 503, bead head 504, big bulb
600, cylinder body 601, oil cylinder 602, mandrel hole 603, concave spherical surface
604, oil duct 700, thrust plate 701, concave spherical surface 800, plunger
801, bulb 802, tapered rod 803, plunger ring 804, thin oil duct
900, end cap
Embodiment
As shown in Figure 2, inclined plunger hydraulic pump/motor of the present invention comprises the housing 100 of a clino-axis type, bonnet 200, main shaft 300, mandrel 400, plunger 800, cylinder body 600, thrust plate 700 and end cap 900.
Wherein, housing 100 is a clino-axis type, i.e. these housing 100 angled bendings, and the upper and lower of housing 100 respectively has an actuator port 101 and a leakage hole 102, and this actuator port 100 and leakage hole 102 clog by plug screw 103.Tail end at housing 100 is equipped with bonnet 300 by screw 201, and the front end of housing 100 is fixed with end cap 900, and main shaft 300, mandrel 400, plunger 800, cylinder body 600 and thrust plate 700 are installed from the front portion to the afterbody in the housing 100 successively.Described main shaft 300 is installed in the front portion of housing 100 by bearings, one end stretches out outside the housing 100 through end cap 900, the other end is a ball-and-socket dish 301, and the end face center of ball-and-socket dish 301 has mandrel ball-and-socket 303, is distributed with plunger ball-and-socket 302 around mandrel ball-and-socket 303; Cylinder body 600 centers have mandrel hole 602, have the oil cylinder 601 of corresponding plunger ball-and-socket 302 around mandrel hole 602.Mandrel 400 is positioned at the mandrel hole 602 of cylinder body 600, the termination is a bulb 401, this bulb 401 is positioned at the mandrel ball-and-socket 303 of the ball-and-socket dish 301 of main shaft 300, between cylinder body 600 and bonnet 200, be provided with thrust plate 700, this thrust plate 700 is positioned on the bonnet 200 by a straight pin, the protruding sphere 701 of thrust plate 700 cooperatively interacts with the concave spherical surface 603 of cylinder body 600, can be on thrust plate 700 concave spherical surfaces 701 when making cylinder body 600 work smooth rotation.The effect of mandrel 400 can be used as the rotating center of cylinder body 600 and main shaft 300 on the one hand, main shaft 300, cylinder body 600 can be supported on the other hand.In addition, the bottom of oil cylinder 601 has oil duct 604, on this oil duct 604 and the thrust plate 700, oil duct is communicated with on the bonnet 200, oil is exactly the oil duct from bonnet 200, on the thrust plate 700 successively, the oil duct 604 of cylinder body 600 enters in the oil cylinder 601, perhaps oil flows out from the oil duct 604 of oil cylinder 601 bottoms, passes through successively on oil duct on the thrust plate 700 and the bonnet 200 outside the oil duct excavationg pump.
For bulb can be moved reliably, on the end face of ball-and-socket dish 301, also be fixed with the pressing plate 304 of location bulb in ball-and-socket.
Easy to assembly for mandrel 400 and cylinder body 600, mandrel 400 is made of cylindrical bar 402 and bulb 401 one, and the aperture in the external diameter of cylindrical bar 402 and mandrel hole 602 adapts, and cylindrical bar 402 is located in this mandrel hole 602.In order to prevent to become flexible, between 602 bottoms, mandrel hole and cylindrical bar 402, also be provided with pad 403.
In order to realize the self oiling between bulb and the ball-and-socket, the thin oil duct 804,403 that the axle core of plunger 800 and mandrel 400 connects vertically, 602 bottoms, mandrel hole also have the oil duct 604 that is communicated with oil duct on the thrust plate.Wherein, the ladder oil duct of thin oil duct 804 for attenuating of plunger 800 to the bulb direction stage.
It more than is exactly inclined plunger hydraulic pump/motor of the present invention, owing to only be provided with plunger between the plunger ball-and-socket of the ball-and-socket dish of oil cylinder and main shaft, the main body of this plunger is a tapered rod, when just making inclined plunger hydraulic pump/motor work, axially the motion while can swing back and forth around the oil cylinder center line this plunger in oil cylinder, as long as it is big that the conical surface angle of tapered rod becomes, it is big that the amplitude that swings back and forth of plunger also just becomes, the inclined shaft angle of inclined plunger hydraulic pump/motor also can be designed to bigger angle so, therefore, it is big that the inclined plunger hydraulic pump/motor of structure of the present invention has the inclined shaft angle, discharge capacity is big, under the same displacement situation, volume can be littler, the advantage that structure is compact more, and the inclined plunger hydraulic pump/motor of the relative prior art of part that adopts is fewer, therefore, exercise performance is more reliable, is not easy to break down.
But, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop on claim scope of the present invention to the above embodiment's variation, modification.
Claims (5)
1, a kind of inclined plunger hydraulic pump/motor, comprise the clino-axis type housing, be separately fixed at the end cap of housing front end and tail end, bonnet, be installed in the main shaft in the housing, mandrel, cylinder body and thrust plate, wherein the center of cylinder body has the mandrel hole, has oil cylinder around being positioned at the mandrel hole, main shaft one end stretches out outside the housing, the other end is the ball-and-socket dish, has the center ball-and-socket on the end face of ball-and-socket dish, and be positioned at plunger ball-and-socket around the ball-and-socket of center, one end bulb of described mandrel is positioned at the center ball-and-socket of ball-and-socket dish, the mandrel hole that the other end is positioned at cylinder body cooperatively interacts cylinder body and thrust plate, it is characterized in that: only be provided with plunger between the plunger ball-and-socket of the ball-and-socket dish of the oil cylinder of described cylinder body and main shaft, described plunger has the bulb that an end cooperates with the plunger ball-and-socket and is located in the oil cylinder to the gradually thin tapered rod of bulb, and the end side face of described tapered rod is provided with the plunger ring that makes tapered rod end and cylinder seal.
2, inclined plunger hydraulic pump/motor according to claim 1 is characterized in that: described mandrel is made of cylindrical bar and bulb one, and the aperture in the external diameter of cylindrical bar and mandrel hole adapts, and cylindrical bar is positioned at the mandrel hole.
3, inclined plunger hydraulic pump/motor according to claim 2 is characterized in that: also be provided with pad between bottom, described mandrel hole and the cylindrical bar.
4, inclined plunger hydraulic pump/motor according to claim 1 is characterized in that: described plunger and mandrel all have the thin oil duct that connects vertically.
5, inclined plunger hydraulic pump/motor according to claim 4 is characterized in that: the ladder oil duct of the thin oil duct of described plunger for attenuating to the bulb direction stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100374786A CN101581298A (en) | 2008-05-15 | 2008-05-15 | Inclined plunger hydraulic pump/motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100374786A CN101581298A (en) | 2008-05-15 | 2008-05-15 | Inclined plunger hydraulic pump/motor |
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| Publication Number | Publication Date |
|---|---|
| CN101581298A true CN101581298A (en) | 2009-11-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100374786A Pending CN101581298A (en) | 2008-05-15 | 2008-05-15 | Inclined plunger hydraulic pump/motor |
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| CN (1) | CN101581298A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267044A (en) * | 2013-05-18 | 2013-08-28 | 大连理工大学 | Hydraulic-driving alternating flow generator |
| CN103850904A (en) * | 2012-11-28 | 2014-06-11 | 北京华德液压工业集团有限责任公司 | Oblique-shaft type axial plunger pump/motor with novel-structured plunger |
| CN106438258A (en) * | 2016-12-13 | 2017-02-22 | 荆门市召铭液压科技有限公司 | Disc type axial plunger pump with adjustable displacement |
| CN110067721A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of hydrostatic driving structure and bent axis type axial piston pump or motor comprising the structure |
-
2008
- 2008-05-15 CN CNA2008100374786A patent/CN101581298A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850904A (en) * | 2012-11-28 | 2014-06-11 | 北京华德液压工业集团有限责任公司 | Oblique-shaft type axial plunger pump/motor with novel-structured plunger |
| CN103850904B (en) * | 2012-11-28 | 2016-09-14 | 北京华德液压工业集团有限责任公司 | A kind of angle type axial piston pump/motor |
| CN103267044A (en) * | 2013-05-18 | 2013-08-28 | 大连理工大学 | Hydraulic-driving alternating flow generator |
| CN103267044B (en) * | 2013-05-18 | 2015-10-28 | 大连理工大学 | Hydraulically powered alternation flow generator |
| CN106438258A (en) * | 2016-12-13 | 2017-02-22 | 荆门市召铭液压科技有限公司 | Disc type axial plunger pump with adjustable displacement |
| CN110067721A (en) * | 2018-05-22 | 2019-07-30 | 钟彪 | A kind of hydrostatic driving structure and bent axis type axial piston pump or motor comprising the structure |
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Open date: 20091118 |