CN201461287U - Plunger piston variable hydraulic pump - Google Patents
Plunger piston variable hydraulic pump Download PDFInfo
- Publication number
- CN201461287U CN201461287U CN2009200738636U CN200920073863U CN201461287U CN 201461287 U CN201461287 U CN 201461287U CN 2009200738636 U CN2009200738636 U CN 2009200738636U CN 200920073863 U CN200920073863 U CN 200920073863U CN 201461287 U CN201461287 U CN 201461287U
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- variable
- hydraulic pump
- piston
- plunger
- oil cylinder
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Abstract
The utility model relates to a plunger piston variable hydraulic pump, which comprises a shell, a rear cover, a transmission shaft as well as a swash plate, a skid shoe, cylinder body, a thrust plate, a plunger piston and a split bearing which are sequentially installed, wherein the upper and the lower parts of the rear cover are respectively provided with an upper variable oil cylinder and a lower variable oil cylinder which face the shell; the upper variable oil cylinder is communicated with a working oil hole of the plunger piston variable hydraulic pump and is internally provided with a variable piston rod; an upper return spring is positioned between the variable piston rod and the rear cover; the variable piston rod is connected with the upper part of the swash plate by an adjusting rod; the lower variable oil cylinder is communicated with a pressure oil hole of the plunger piston variable hydraulic pump and is internally provided with a variable piston; a lower return spring is positioned between the variable piston and the bottom of the lower variable oil cylinder; and the variable piston is connected with the lower part of the swash plate by a lower adjusting rod. The plunger piston variable hydraulic pump has the advantages of small volume, simple structure, stable mechanical performance and being beneficial to the installation of a hydraulic system.
Description
Technical field
The utility model relates to oil hydraulic pump, relates in particular to a kind of plunger variable oil hydraulic pump.
Background technique
As the active force pump in engineering machinery, the industrial system, the plunger variable oil hydraulic pump has the advantages that volume is big, efficient is high and can be fit to the long-term work of high-voltage high-speed state.
At present, existing plunger variable oil hydraulic pump all is to change the variable characteristics that reaches the pilot plunger volume adjustable hydraulic pump by the inclination angle that servo-cylinder is controlled swash plate basically.There is following shortcoming in existing this plunger variable oil hydraulic pump:
1,, therefore causes the installation that whole plunger variable oil hydraulic pump overall volume is big, be unfavorable for hydraulic system because servo-cylinder need be arranged on the outside of housing;
2, servo-cylinder housing structure complexity needs the part of employing many, the mechanical property instability.
The model utility content
Technical problem to be solved in the utility model provides that a kind of overall volume is little, simple in structure, the plunger variable oil hydraulic pump of stable mechanical performance, has shortcoming to overcome prior art.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme:
A kind of plunger variable oil hydraulic pump, comprise housing, be installed in the bonnet at housing rear portion, be located in the transmission shaft in the housing, and be installed in swash plate on the transmission shaft successively, piston shoes, cylinder body, thrust plate, come transmission by plunger between described piston shoes and the cylinder body, described swash plate sidepiece is connected with the split bearing of enclosure interior, it is characterized in that: described bonnet upper-lower position has respectively towards the last variable oil cylinder of housing and following variable oil cylinder, the described variable oil cylinder of going up is communicated with the actuator port of plunger variable oil hydraulic pump, the variable piston rod is installed in it, be provided with returning spring between described piston variable bar and the bonnet, connect by adjustable lever between described variable piston rod and the swash plate top; Described variable oil cylinder down is communicated with the pressure hydraulic fluid port of plunger variable oil hydraulic pump, is provided with the variable piston in it, is provided with down returning spring between variable piston and the following variable oil cylinder bottom, connects by lower dolly bar between variable piston and the swash plate bottom.
Described swash plate is ball-and-socket and following ball-and-socket on having on the end face, described variable piston rod and variable piston upper end all have axis hole, described rise pole one end is arranged in ball-and-socket, the other end is arranged in the axis hole of variable piston rod, described lower dolly bar one end is arranged in ball-and-socket down, and the other end is arranged in the axis hole of variable piston.
The position of variable oil cylinder has positioning hole on the variable of the being enclosed within piston rod on the described bonnet correspondence, be provided with sleeve between described positioning hole and the variable piston rod, the upper end of described variable piston rod has flange, and described going up replied spring housing on the variable piston rod, one end props up flange, and the other end props up sleeve.
Described variable oil cylinder down bottom has the spring positioning pit, and the lower end of described variable piston has location hole of the spring, and described returning spring one end down is arranged in the spring positioning pit, and the other end is arranged in location hole of the spring.
Adopt technique scheme, plunger variable oil hydraulic pump of the present utility model is when work, if the actuator port oil pressure is too high, so just the input high pressure oil promotes the variable piston and then promotes lower dolly bar to make (top to the right) swing left of swash plate bottom in the downward variable oil cylinder of pressure hydraulic fluid port, reduces swashplate angle; If oil pressure ratio is lower in the actuator port, so under the effect of last returning spring, make swash plate lower rightward (top left) swing, increase swashplate angle. so, so just can realize regulating automatically the inclination angle of swash plate according to operating oil pressure, the working state of pilot plunger volume adjustable hydraulic pump adaptively. on structure, the plunger variable oil hydraulic pump of the relative prior art of plunger variable oil hydraulic pump of the present utility model has following advantage:
1, all component all are positioned at enclosure interior, and overall volume is less, help the installation of hydraulic system;
2, only adopted variable piston, variable piston rod, two adjustable levers and two returning springs just to realize the purpose of variable, the plunger variable oil hydraulic pump of relative prior art, structure is simplified greatly, not only save cost, assemble easily, and improved the mechanical stability of plunger variable oil hydraulic pump greatly.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated:
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in Figure 1, plunger variable oil hydraulic pump of the present utility model comprises housing 100, bonnet 200, transmission shaft 300, swash plate 400, piston shoes 500, cylinder body 600, thrust plate 700, split bearing 800, axle plug 810, variable piston rod 10, variable piston 20 raises pole 30, lower dolly bar 40, last returning spring 50 and following returning spring 60.
Wherein, housing 100 front portions have axis hole 101, and the rear portion connects bonnet 200, transmission shaft 300 stretches into housing 100 inside from axis hole 101, one end is supported by bearing 901 and is positioned at outside the housing 100, can be connected with external means, carries out liquid sealing between transmission shaft 300 and the axis hole 101; The other end of transmission shaft 300 is supported by bearing 902 and is positioned on the bonnet 200.
Inner near axis holes 101 and be positioned at transmission shaft 300 other positions the end face split bearing 800 parallel with transmission shaft 300 axial directions is installed at housing 100, has obvious axis hole in the middle of the swash plate 400 greater than the transmission shaft diameter, be enclosed within on the transmission shaft 300 and sidepiece is connected with split bearing 800, making can be with the swing of transmission shaft 300 axis symmetry under split bearing 300 supports.Swash plate 400 ball-and-socket 401 and following ball-and-socket 402 on having on the end face in addition.
Piston shoes 500, cylinder body 600, thrust plate 700 are installed on the transmission shaft 300 successively, sliding contact between piston shoes 500 1 end faces and swash plate 400 end faces.Cylinder body 600 meshes by the driving cog 301 on internal tooth 601 and the transmission shaft 300.Piston shoes 500 other ends along the circumferential direction are distributed with plunger ball-and-socket 501, have the plunger cylinder 602 corresponding with plunger ball-and-socket 501 on the cylinder body 600.Plunger 810 1 ends are arranged in plunger ball-and-socket 501, and the other end is arranged in plunger cylinder 602.Thrust plate 700 is fixed on the bonnet 200.Thrust plate 700 has the sphere 701 of protrusion, and cylinder body 600 has recessed sphere 603, protrudes sphere 701 and the 603 mutual sliding contacts cooperations of recessed sphere.
Have variable oil cylinder 201 and following variable oil cylinder 202 in bonnet 200 upper and lowers.
Wherein, last variable oil cylinder 201 is communicated with the actuator port 001 of plunger variable oil hydraulic pump, variable piston rod 10 is installed in the variable oil cylinder 201, and bonnet 200 corresponding positions of going up variable oil cylinder 201 have the positioning hole 203 that is enclosed within on the variable piston rod 10, are provided with sleeve 70 between positioning hole 202 and variable piston rod 10.In addition, the upper end of variable piston rod 10 has flange 11, and last returning spring 50 is enclosed within on the variable piston rod 10, and an end props up flange 11, and the other end props up sleeve 70.Variable piston rod 10 upper ends have axis hole 12, raise pole 30 1 ends and are arranged in ball-and-socket 401, and the other end is arranged in axis hole 12.
Following variable oil cylinder 202 is communicated with the pressure hydraulic fluid port 002 of plunger variable oil hydraulic pump, and variable piston 20 is arranged in variable oil cylinder 202 down.Following variable oil cylinder 202 bottoms have spring positioning pit 204, and the lower end of variable piston 20 has location hole of the spring 21, and following returning spring 60 1 ends are arranged in spring positioning pit 201, and the other end is arranged in location hole of the spring 21.The upper end of variable piston 20 has axis hole 22, and lower dolly bar 40 1 ends are arranged in ball-and-socket 401, and the other end is arranged in axis hole 22.
It more than is exactly plunger variable oil hydraulic pump of the present utility model, this plunger variable oil hydraulic pump is when work, if actuator port 001 oil pressure is too high, so just 202 input high pressure oils promote variable pistons 20 and then promote lower dolly bar 60 to make (top to the right) swing left of swash plate 400 bottoms in the pressure hydraulic fluid port 002 downward variable oil cylinder, reduce swashplate angle, if oil pressure ratio is lower in the actuator port 001, so under the effect of last returning spring 50, make swash plate 400 lower rightward (top left) swing, increase swashplate angle.The so so inclination angle that just can realize regulating automatically swash plate, the working state of pilot plunger volume adjustable hydraulic pump adaptively according to operating oil pressure.
By foregoing description as can be seen, plunger variable oil hydraulic pump of the present utility model can be realized the variable regulatory function of plunger variable oil hydraulic pump fully; In addition, on structure, the plunger variable oil hydraulic pump of the relative prior art of plunger variable oil hydraulic pump of the present utility model has following advantage:
1, all component all are positioned at enclosure interior, and overall volume is less, help the installation of hydraulic system;
2, only adopted variable piston, variable piston rod, two adjustable levers and two returning springs just to realize the purpose of variable, the plunger variable oil hydraulic pump of relative prior art, structure is simplified greatly, not only save cost, assemble easily, and improved the mechanical stability of plunger variable oil hydraulic pump greatly.
But, those skilled in the art will recognize that, above-mentioned embodiment is exemplary, be in order better to make those skilled in the art can understand this patent, can not be interpreted as it is the restriction that this patent is comprised scope, so long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (4)
1. plunger variable oil hydraulic pump, comprise housing, be installed in the bonnet at housing rear portion, be located in the transmission shaft in the housing, and be installed in swash plate on the transmission shaft successively, piston shoes, cylinder body, thrust plate, come transmission by plunger between described piston shoes and the cylinder body, described swash plate sidepiece is connected with the split bearing of enclosure interior, it is characterized in that: described bonnet upper-lower position has respectively towards the last variable oil cylinder of housing and following variable oil cylinder, the described variable oil cylinder of going up is communicated with the actuator port of plunger variable oil hydraulic pump, the variable piston rod is installed in it, be provided with returning spring between described piston variable bar and the bonnet, connect by adjustable lever between described variable piston rod and the swash plate top; Described variable oil cylinder down is communicated with the pressure hydraulic fluid port of plunger variable oil hydraulic pump, is provided with the variable piston in it, is provided with down returning spring between variable piston and the following variable oil cylinder bottom, connects by lower dolly bar between variable piston and the swash plate bottom.
2. plunger variable oil hydraulic pump according to claim 1, it is characterized in that: described swash plate is ball-and-socket and following ball-and-socket on having on the end face, described variable piston rod and variable piston upper end all have axis hole, described rise pole one end is arranged in ball-and-socket, the other end is arranged in the axis hole of variable piston rod, described lower dolly bar one end is arranged in ball-and-socket down, and the other end is arranged in the axis hole of variable piston.
3. plunger variable oil hydraulic pump according to claim 1, it is characterized in that: the position of variable oil cylinder has positioning hole on the variable of the being enclosed within piston rod on the described bonnet correspondence, be provided with sleeve between described positioning hole and the variable piston rod, the upper end of described variable piston rod has flange, described going up replied spring housing on the variable piston rod, one end props up flange, and the other end props up sleeve.
4. plunger variable oil hydraulic pump according to claim 1, it is characterized in that: described variable oil cylinder down bottom has the spring positioning pit, the lower end of described variable piston has location hole of the spring, and described returning spring one end down is arranged in the spring positioning pit, and the other end is arranged in location hole of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200738636U CN201461287U (en) | 2009-05-05 | 2009-05-05 | Plunger piston variable hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200738636U CN201461287U (en) | 2009-05-05 | 2009-05-05 | Plunger piston variable hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461287U true CN201461287U (en) | 2010-05-12 |
Family
ID=42388641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200738636U Expired - Lifetime CN201461287U (en) | 2009-05-05 | 2009-05-05 | Plunger piston variable hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461287U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865206A (en) * | 2012-10-07 | 2013-01-09 | 四川省宜宾普什驱动有限责任公司 | High-speed pump |
| CN101550920B (en) * | 2009-05-05 | 2013-06-12 | 上海电气液压气动有限公司 | Plunger variable pump |
| CN104948408A (en) * | 2015-07-01 | 2015-09-30 | 张意 | Variable axial plunger pump |
| WO2016011898A1 (en) * | 2014-07-21 | 2016-01-28 | 沃尔科技有限公司 | Axial plunger type hydraulic pump |
| CN106894962A (en) * | 2017-03-08 | 2017-06-27 | 重庆红江机械有限责任公司 | A kind of high-pressure high-flow hydraulic planger pump |
-
2009
- 2009-05-05 CN CN2009200738636U patent/CN201461287U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101550920B (en) * | 2009-05-05 | 2013-06-12 | 上海电气液压气动有限公司 | Plunger variable pump |
| CN102865206A (en) * | 2012-10-07 | 2013-01-09 | 四川省宜宾普什驱动有限责任公司 | High-speed pump |
| WO2016011898A1 (en) * | 2014-07-21 | 2016-01-28 | 沃尔科技有限公司 | Axial plunger type hydraulic pump |
| CN104948408A (en) * | 2015-07-01 | 2015-09-30 | 张意 | Variable axial plunger pump |
| CN104948408B (en) * | 2015-07-01 | 2017-06-30 | 张意 | A kind of axial variable displacement plunger pump |
| CN106894962A (en) * | 2017-03-08 | 2017-06-27 | 重庆红江机械有限责任公司 | A kind of high-pressure high-flow hydraulic planger pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100512 Effective date of abandoning: 20090505 |
|
| RGAV | Abandon patent right to avoid regrant |