CN102192140A - Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate - Google Patents
Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate Download PDFInfo
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- CN102192140A CN102192140A CN2011101590905A CN201110159090A CN102192140A CN 102192140 A CN102192140 A CN 102192140A CN 2011101590905 A CN2011101590905 A CN 2011101590905A CN 201110159090 A CN201110159090 A CN 201110159090A CN 102192140 A CN102192140 A CN 102192140A
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- plate
- swash
- type axial
- swash plate
- skid
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Abstract
The invention discloses a swash-plate type axial plunger pump with a ball bearing device between a swash plate and a skid-plate, belonging to the technical field of the transmission of the swash-plate type axial plunger pump. The swash-plate type axial plunger pump aims at overcoming the shortcoming that the frictional resistance suffered by the skid-plate is larger when the skid-plate of the traditional swash-plate type axial plunger pump slides on the surface of the swash plate. The swash-plate type axial plunger pump comprises the swash plate, the skid-plate, a retainer plate, a plunger, a transmission shaft and a cylinder block, wherein a ball bearing disk is arranged between the swash plate and the skid-plate; one surface of the ball bearing disk which faces toward the skid-plate is a flat surface; the other surface of the ball bearing disk which faces toward the swash plate is provided with a ring of ball bearing grooves; and at least three ball bearings are uniformly distributed in the ball bearing grooves. The swash-plate type axial plunger pump is suitable for being updated by swash-plate type axial plunger pump manufacturers.
Description
Technical field
The present invention relates to a kind of drive technology of cam-type axial piston pump, particularly relate to the cam-type axial piston pump of establishing roller unit between a kind of swash plate and crawler shoe.
Background technique
Providing to hydraulic system in the oil hydraulic pump of power, because cam-type axial piston pump has: the part that hydraulic pressure is pressurizeed is columniform plunger and cylinder hole, can process more easily, and can reach higher quality of fit and good sealing property, still have higher volumetric efficiency when under high pressure conditions, working; When needs changed the flow operation, the working stroke that only need change plunger simply just can achieve the goal; Main parts size all is to work under the operating mode of compression chord, the intensity of material can be fully used, therefore can make advantages such as radial dimension miniaturization, compact overall structure, the motional inertia of the pump housing is little, so needing oil hydraulic pump that bigger power and flow are arranged, hydraulic fluid had higher pressure, can be widely used in the hydraulic system of can regulate flow at any time as required.During cam-type axial piston pump work, be to drive the cylinder body rotation, and then make the also rotation synchronously of plunger that is assemblied in the cylinder hole by transmission shaft.Because under the effect of backhaul dish, make to be set in crawler shoe on the plunger external end head and to be close to the appearance plane of swash plate all the time and to be rotated slip, make plunger also reciprocating in the cylinder hole in cylinder body rotation synchronously, thereby realize the operating mode of imbibition and hydraulic fluid.Obviously, here friction is a sliding friction between the appearance plane of crawler shoe and swash plate, its surface friction drag is bigger, make pump in the process of the pressure energy that the mechanical energy of prime mover input is converted to hydraulic fluid, have bigger part energy to be used to overcome the frictional force between crawler shoe and the swash plate, the efficient of pump is reduced, also aggravated simultaneously component wearing and tearing, shorten its working life.
Summary of the invention
The purpose of this invention is to provide the cam-type axial piston pump of establishing roller unit between a kind of swash plate and crawler shoe, the crawler shoe that overcomes present cam-type axial piston pump suffered bigger deficiency of surface friction drag when swash surfaces is slided.
The present invention is achieved by following technical proposals.
The present invention includes swash plate, crawler shoe, backhaul dish, plunger, transmission shaft, cylinder body, between described swash plate and described crawler shoe, be provided with the ball dish, described ball dish is the plane, is provided with a circle ball grooves towards the one side of described swash plate towards the one side of described crawler shoe, and at least three balls are housed in described ball grooves in uniform way.Because among the present invention, owing between described crawler shoe and described swash plate, increased described ball dish and ball, make the motion between described crawler shoe and the described swash plate become rolling by slip, suffered surface friction drag reduces greatly, and the wearing and tearing of related components are alleviated.
Synchronous, stressed even for described ball is rolled when working, on the described ball retainer is housed.For the plane of protecting described swash plate is not worn, be provided with hypostase between described swash plate and the described ball, described hypostase is provided with a circle ball grooves towards the one side of described ball, is the plane and fixes with screw and described swash plate towards the one side of described swash plate.Like this, when the rolling member that is made of described ball dish, ball, hypostase need be changed, can be more convenient, realize under the situation that cost is lower in operation.
Against existing technologies, the invention has the beneficial effects as follows:
The kinetic energy that can allow transmission shaft carry changes the compression energy of plunger into more most ofly, thereby improves the efficient of pump.
Description of drawings
Fig. 1 is a structural representation of the present invention, and Fig. 2 is the A-A cut-away view of Fig. 1.Among the figure: 1, swash plate, 2, crawler shoe, 3, the backhaul dish, 4, plunger, 5, transmission shaft, 6, cylinder body, 7, the ball dish, 8, ball, 9, ball grooves, 10, retainer, 11, hypostase.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
According to diagram, when transmission shaft 5 drove cylinder body 6 rotations, plunger 4 also rotated synchronously with cylinder body, because the effect of swash plate 1 and backhaul dish 3, vertical surface with the center line by transmission shaft 5 is the boundary, makes insert plunger 4 on the left side and the right on cylinder body 6 do the opposite to-and-fro motion of direction respectively.In this process, crawler shoe 2 will bear very big pressure stress towards the one side of swash plate 1, and especially when plunger 4 was made the hydraulic fluid stroke, this pressure stress was greater than the pressure of plunger to hydraulic fluid.In present technology, crawler shoe 2 will slide on the surface of swash plate 1 under so big pressure stress, must overcome bigger force of sliding friction, and overcome friction institute work is unprofitable to improve the efficient of pump.In the present invention, all crawler shoes 2 all are to be pressed on the ball dish 7, rotate together, and then owing to the effect of ball 8, hypostase 11, suffered is force of rolling friction to ball dish 7.Clearly, ball dish 7 former each crawler shoe 2 of rolling friction force rate that will overcome force of sliding friction sum that will overcome is much smaller.Like this, the kinetic energy that just can allow transmission shaft carry changes the compression energy of plunger into more most ofly, thereby improves the efficient of pump.
Claims (3)
1. establish the cam-type axial piston pump of roller unit between swash plate and crawler shoe, comprise swash plate, crawler shoe, backhaul dish, plunger, transmission shaft, cylinder body, it is characterized in that, between described swash plate and described crawler shoe, be provided with the ball dish, described ball dish is the plane, is provided with a circle ball grooves towards the one side of described swash plate towards the one side of described crawler shoe, and at least three balls are housed in described ball grooves in uniform way.
2. establish the cam-type axial piston pump of roller unit between a kind of swash plate according to claim 1 and crawler shoe, it is characterized in that, on the described ball retainer is housed.
3. establish the cam-type axial piston pump of roller unit between a kind of swash plate according to claim 1 and crawler shoe, it is characterized in that, be provided with hypostase between described swash plate and the described ball, described hypostase is provided with a circle ball grooves towards the one side of described ball, is the plane and fixes with screw and described swash plate towards the one side of described swash plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101590905A CN102192140A (en) | 2011-06-13 | 2011-06-13 | Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101590905A CN102192140A (en) | 2011-06-13 | 2011-06-13 | Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192140A true CN102192140A (en) | 2011-09-21 |
Family
ID=44600837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101590905A Pending CN102192140A (en) | 2011-06-13 | 2011-06-13 | Swash-plate type axial plunger pump with ball bearing device between swash plate and skid-plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102192140A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443105A (en) * | 2018-02-24 | 2018-08-24 | 江苏盈科汽车空调有限公司 | A kind of gas piston linkage device of mechanical variable compressor |
| CN112983772A (en) * | 2021-03-30 | 2021-06-18 | 中航力源液压股份有限公司 | Axial plunger pump return device capable of reducing wear of sliding shoe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105574A (en) * | 1980-12-19 | 1982-07-01 | Japan Steel Works Ltd:The | Axial piston pump |
| JPH08500883A (en) * | 1993-01-18 | 1996-01-30 | ダンフォス アクチェセルスカベト | Hydraulic axial piston machine |
| US6036374A (en) * | 1998-07-23 | 2000-03-14 | Alliedsignal Inc. | Rotating guide for cam bearing cage |
| CN2553133Y (en) * | 2002-05-21 | 2003-05-28 | 柳州市建筑机械总厂 | Inclined disc axial plunger pump |
| US20050226737A1 (en) * | 2004-04-07 | 2005-10-13 | Sauer-Danfoss, Inc. | Axial piston hydraulic power unit with pseudo slippers |
| WO2006122642A1 (en) * | 2005-05-20 | 2006-11-23 | Schaeffler Kg | Swash plate mechanism |
| CN202108722U (en) * | 2011-06-13 | 2012-01-11 | 宣伯民 | Swash plate axial plunger pump with ball device arranged between swash plate and sliding track |
-
2011
- 2011-06-13 CN CN2011101590905A patent/CN102192140A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57105574A (en) * | 1980-12-19 | 1982-07-01 | Japan Steel Works Ltd:The | Axial piston pump |
| JPH08500883A (en) * | 1993-01-18 | 1996-01-30 | ダンフォス アクチェセルスカベト | Hydraulic axial piston machine |
| US6036374A (en) * | 1998-07-23 | 2000-03-14 | Alliedsignal Inc. | Rotating guide for cam bearing cage |
| CN2553133Y (en) * | 2002-05-21 | 2003-05-28 | 柳州市建筑机械总厂 | Inclined disc axial plunger pump |
| US20050226737A1 (en) * | 2004-04-07 | 2005-10-13 | Sauer-Danfoss, Inc. | Axial piston hydraulic power unit with pseudo slippers |
| WO2006122642A1 (en) * | 2005-05-20 | 2006-11-23 | Schaeffler Kg | Swash plate mechanism |
| CN202108722U (en) * | 2011-06-13 | 2012-01-11 | 宣伯民 | Swash plate axial plunger pump with ball device arranged between swash plate and sliding track |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108443105A (en) * | 2018-02-24 | 2018-08-24 | 江苏盈科汽车空调有限公司 | A kind of gas piston linkage device of mechanical variable compressor |
| CN112983772A (en) * | 2021-03-30 | 2021-06-18 | 中航力源液压股份有限公司 | Axial plunger pump return device capable of reducing wear of sliding shoe |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |