CN102943752A - Displacement-adjustment driving mechanism for hydraulic pump - Google Patents
Displacement-adjustment driving mechanism for hydraulic pump Download PDFInfo
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- CN102943752A CN102943752A CN2012104609359A CN201210460935A CN102943752A CN 102943752 A CN102943752 A CN 102943752A CN 2012104609359 A CN2012104609359 A CN 2012104609359A CN 201210460935 A CN201210460935 A CN 201210460935A CN 102943752 A CN102943752 A CN 102943752A
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- driving mechanism
- piston
- connecting pin
- hydraulic pump
- oil hydraulic
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Abstract
The invention discloses a displacement-adjustment driving mechanism for a hydraulic pump. The driving mechanism is arranged in a back cover of the hydraulic pump, and is connected with a valve plate, and the valve plate is arranged in a casing of the hydraulic pump and is in contact with the back cover. The driving mechanism comprises a hydraulic cylinder, a piston, a piston rod and a connecting pin, wherein the hydraulic cylinder, the piston, the piston rod and the connecting pin are arranged in the back cover, the hydraulic cylinder is separated into an upper hydraulic cavity and a lower hydraulic cavity by the piston, the tail end of the piston is connected with the piston rod, one end of the connecting pin is arranged in the back cover and is connected with the piston rod, the valve plate is provided with a connecting hole, and the other end of the connecting pin penetrates through the connecting hole. The driving mechanism drives the valve plate to move along the back cover, and then the tilting angle of the valve plate is changed, so the displacement is adjusted, and the larger the tilting angle is, the larger the displacement is. In addition, the penetrating end of the connecting pin is in a spherical structure, and is free from interference and limitation, so the adjustment is smoother.
Description
Technical field
The invention belongs to hydraulic pump/motor, especially relate to a kind of oil hydraulic pump and regulate driving mechanism with discharge capacity.
Background technique
Inclined plunger hydraulic pump/motor, be mainly used in the hydraulic driving of running mechanism, traditional inclined plunger hydraulic pump/motor mainly comprises housing, be fixed on end cap, the bonnet of housing front end, rear end, be installed on motor spindle, mandrel, plunger part, cylinder body and the thrust plate of enclosure interior; Wherein motor spindle one end stretches out end cap, and the other end is provided with the ball-and-socket dish, and mandrel, plunger part one end are located at respectively in the ball-and-socket dish, and the mandrel the other end links to each other with thrust plate, and plunger part one end is located in the cylinder body.Adopt the hydraulic pump/motor of said structure, have plunger part processing simply, reliable transmission, advantages such as can enhancing productivity and reduce the cost.But, be fixedly connected with because its thrust plate and bonnet are employings, thereby so that existing inclined plunger hydraulic pump/motor all can't realize its discharge capacity is carried out corresponding adjusting.
Summary of the invention
Technical problem to be solved by this invention provides a kind of oil hydraulic pump and regulates driving mechanism with discharge capacity, can realize its discharge capacity is regulated.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
A kind of oil hydraulic pump is regulated driving mechanism with discharge capacity, be located in the bonnet of oil hydraulic pump, and with the housing of being located at oil hydraulic pump in and link to each other with the contacted thrust plate of bonnet, described driving mechanism comprises oil hydraulic cylinder, piston, piston rod, the connecting pin of being located in the bonnet, and piston is separated into upper and lower two hydraulic pressure cavity with oil hydraulic cylinder, and piston-rod end links to each other with piston, connecting pin one end is located in the bonnet, and link to each other with piston rod, thrust plate is provided with attachment hole, and the connecting pin the other end is arranged in attachment hole.
The compression area of described lower hydraulic pressure chamber is greater than the compression area of upper hydraulic pressure cavity.
The end that penetrates of described connecting pin is spheric structure.
Adopt oil hydraulic pump of the present invention to regulate driving mechanism with discharge capacity, have following advantage:
1, drive thrust plate by driving mechanism and move along bonnet, changing its measuring angle that inclines, thereby realize the adjusting to discharge capacity, the angulation of namely inclining is larger, and discharge capacity is larger.
2, the end that penetrates of connecting pin is spherical structure, can not interfered and limit, so that adjusting is more smooth and easy.
Description of drawings
The present invention is elaborated below in conjunction with the drawings and specific embodiments:
Fig. 1 is the sectional arrangement drawing that discharge capacity of the present invention is regulated driving mechanism.
Embodiment
The present invention is take inclined plunger hydraulic pump as example, as shown in Figure 1, its bonnet 3 is not fixedly connected with thrust plate 8, but contacts, and bonnet 3 has inner chamber, the discharge capacity that the bottom is connected with thrust plate 8 in addition in the inner chamber is regulated driving mechanism, and drive thrust plate 8 by this driving mechanism and move along bonnet 3 surface of contact, thereby can change its measuring angle that inclines, to realize the adjusting to its discharge capacity, the angulation of namely inclining is larger, and discharge capacity is larger.
Described driving mechanism comprises oil hydraulic cylinder 9, piston 10, piston rod 11, connecting pin 12, piston 10 is separated into upper and lower two hydraulic pressure cavity 14,15 with oil hydraulic cylinder 9, piston rod 11 ends link to each other with piston 10, connecting pin 12 1 ends are located in the bonnet 3, and link to each other with piston rod 11, thrust plate 8 is provided with attachment hole 13, and connecting pin 12 the other ends are arranged in attachment hole 13, bonnet 3 bottoms are provided with cylinder cap 19, and cylinder cap 19 is provided with the inlet opening 16 that communicates with lower hydraulic pressure chamber 15.By the driving of oil hydraulic cylinder 9, drive connecting pin 12 and move up and down, thus the movement of drive thrust plate 8.Certainly, can also use such as other driving mechanisms such as cylinder, mechanical type drivings, to realize drive actions.
And the compression area of above-mentioned lower hydraulic pressure chamber 15 is greater than the compression area of upper hydraulic pressure cavity 14.So, the control oiling valve so that hydraulic oil only enters hydraulic pressure cavity 14, and does not have hydraulic oil to enter in the lower hydraulic pressure chamber 15, hydraulic oil in the upper hydraulic pressure cavity 14 can pushing piston 10 and piston rod 11 move down, and drive connecting pin 12 and move down, thrust plate 8 is to lower swing.And when all having hydraulic oil to enter in the upper and lower hydraulic pressure cavity 14,15 because the compression area of lower hydraulic pressure chamber 15 is greater than the compression area of upper hydraulic pressure cavity 14, piston 10 and piston rod 11 can on move, and drive connecting pin 12 and move upward, thrust plate 8 upwards swings.
The end 17 that penetrates of described connecting pin 12 is spheric structure, can not interfered and limit when moving up and down, so that adjusting is more smooth and easy.
But, those of ordinary skill in the art will be appreciated that, above embodiment illustrates 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 in claims scope of the present invention the above embodiment's variation, modification.
Claims (3)
1. an oil hydraulic pump is regulated driving mechanism with discharge capacity, be located in the bonnet of oil hydraulic pump, and with the housing of being located at oil hydraulic pump in and link to each other with the contacted thrust plate of bonnet, described driving mechanism comprises oil hydraulic cylinder, piston, piston rod, the connecting pin of being located in the bonnet, and piston is separated into upper and lower two hydraulic pressure cavity with oil hydraulic cylinder, and piston-rod end links to each other with piston, connecting pin one end is located in the bonnet, and link to each other with piston rod, thrust plate is provided with attachment hole, and the connecting pin the other end is arranged in attachment hole.
2. oil hydraulic pump according to claim 1 is regulated driving mechanism with discharge capacity, it is characterized in that: the compression area of described lower hydraulic pressure chamber is greater than the compression area of upper hydraulic pressure cavity.
3. oil hydraulic pump according to claim 1 is regulated driving mechanism with discharge capacity, it is characterized in that: the end that penetrates of described connecting pin is spheric structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104609359A CN102943752A (en) | 2012-11-15 | 2012-11-15 | Displacement-adjustment driving mechanism for hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104609359A CN102943752A (en) | 2012-11-15 | 2012-11-15 | Displacement-adjustment driving mechanism for hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102943752A true CN102943752A (en) | 2013-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104609359A Pending CN102943752A (en) | 2012-11-15 | 2012-11-15 | Displacement-adjustment driving mechanism for hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102943752A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979996A (en) * | 2018-08-01 | 2018-12-11 | 重庆交通大学 | Hydraulic birotor piston driver |
| CN108979995A (en) * | 2018-08-01 | 2018-12-11 | 重庆交通大学 | Air-driven type birotor piston driver |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739692A (en) * | 1968-09-06 | 1973-06-19 | Reyrolle Hydraulics Ltd | Swashplate and like hydraulic machines |
| US4198899A (en) * | 1976-09-24 | 1980-04-22 | Linde Ag | Axial-piston machine of variable output having a slide for displaying the cylinder drum |
| US6279452B1 (en) * | 1996-11-27 | 2001-08-28 | Brueninghaus Hydromatik Gmbh | Axial piston motor with bearing flushing |
| CN2667194Y (en) * | 2003-12-23 | 2004-12-29 | 启东高压油泵有限公司 | Internal controlling electric hydraulic ratio variable quantity axial plunger pump |
| CN201007261Y (en) * | 2007-02-01 | 2008-01-16 | 北京华德液压工业集团有限责任公司技术中心 | Axial Variable displacement plunger pump |
| CN101548104A (en) * | 2006-03-17 | 2009-09-30 | 普莱莫斯多玛氏娜股份有限公司 | Axial-piston hydraulic machine with adjustable working volume |
| CN203098172U (en) * | 2012-11-15 | 2013-07-31 | 上海电气液压气动有限公司 | Discharge capacity adjustment driving mechanism for hydraulic pump |
-
2012
- 2012-11-15 CN CN2012104609359A patent/CN102943752A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3739692A (en) * | 1968-09-06 | 1973-06-19 | Reyrolle Hydraulics Ltd | Swashplate and like hydraulic machines |
| US4198899A (en) * | 1976-09-24 | 1980-04-22 | Linde Ag | Axial-piston machine of variable output having a slide for displaying the cylinder drum |
| US6279452B1 (en) * | 1996-11-27 | 2001-08-28 | Brueninghaus Hydromatik Gmbh | Axial piston motor with bearing flushing |
| CN2667194Y (en) * | 2003-12-23 | 2004-12-29 | 启东高压油泵有限公司 | Internal controlling electric hydraulic ratio variable quantity axial plunger pump |
| CN101548104A (en) * | 2006-03-17 | 2009-09-30 | 普莱莫斯多玛氏娜股份有限公司 | Axial-piston hydraulic machine with adjustable working volume |
| CN201007261Y (en) * | 2007-02-01 | 2008-01-16 | 北京华德液压工业集团有限责任公司技术中心 | Axial Variable displacement plunger pump |
| CN203098172U (en) * | 2012-11-15 | 2013-07-31 | 上海电气液压气动有限公司 | Discharge capacity adjustment driving mechanism for hydraulic pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108979996A (en) * | 2018-08-01 | 2018-12-11 | 重庆交通大学 | Hydraulic birotor piston driver |
| CN108979995A (en) * | 2018-08-01 | 2018-12-11 | 重庆交通大学 | Air-driven type birotor piston driver |
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Application publication date: 20130227 |