CN102865207A - Axial swash plate type hydraulic plunger pump - Google Patents
Axial swash plate type hydraulic plunger pump Download PDFInfo
- Publication number
- CN102865207A CN102865207A CN2012102743847A CN201210274384A CN102865207A CN 102865207 A CN102865207 A CN 102865207A CN 2012102743847 A CN2012102743847 A CN 2012102743847A CN 201210274384 A CN201210274384 A CN 201210274384A CN 102865207 A CN102865207 A CN 102865207A
- Authority
- CN
- China
- Prior art keywords
- piston
- flow
- mouth
- control valve
- flow piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
Images
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The invention discloses an axial swash plate type hydraulic plunger pump. The plunger pump comprises a double step thrust plug. An opening a and an opening b of the double step thrust plug are connected to front and rear pumps respectively, a plunger end surface of the double step thrust plug abuts against the end surface of a regulating lever, a power spring is sleeved on the regulating lever, a spring seat is pressed at the rear end of the power spring, a valve core of a power control valve is pressed on the end portion of the regulating lever, a step is arranged on the valve core, the power control valve is provided with an oil opening d and an oil opening c, a flow piston is fixedly connected to the spring seat, a valve cavity on a small end side of the flow piston is connected with the opening a of the double step thrust plug and the opening c of the power control valve, a valve cavity on a large end side of the flow piston is connected with the opening c of the power control valve, and the flow piston is fixedly connected with a swash plate of the plunger pump. As the area of the large end of the flow piston is larger than that of the small end, the pressure is increased, the flow is reduced, and constant power variables are achieved; otherwise, when the load is reduced, the pressure at two ends of the flow piston is reduced, the power spring is maintained at a compression amount during high pressure at the moment, hydraulic pressure at the large end of the flow piston is reduced, the flow is increased, and the control mode is reasonable.
Description
Technical field
The present invention relates to axial inclined disc type hydraulic planger pump.
Background technique
Plunger pump working principle, plunger pump are a kind of of reciprocating pump, belong to volume pump, and its plunger drives by the eccentric rotary of pump shaft, to-and-fro motion, and it sucks and expulsion valve all is one-way valve.When drawing outside the plunger, working room's internal pressure reduces, and outlet valve cuts out, and when being lower than inlet pressure, inlet valve is opened, and liquid enters; When pushing away in the plunger, working room's pressure raises, and inlet valve cuts out, and when being higher than outlet pressure, outlet valve is opened, and liquid is discharged.
Axial piston pump with the piston shoes structure is present most popular axial piston pump, and the plunger that is placed in the cylinder body contacts with swash plate by piston shoes, and when transmission shaft drove the cylinder body rotation, swash plate was pulled out plunger or pushed back from cylinder body, finishes suction oil process.Fluid in the work cavity volume that plunger and cylinder hole form communicates with suction, the oil-discharging cavity of pump respectively by oil distribution casing.Stroking mechanism is used for changing the inclination angle of swash plate, can change pump delivery by the inclination angle of regulating swash plate.But it is poor that existing plunger pump pressure is regulated receptance, is difficult to proof load and changes the oil mass that can regulate in real time oil pump.
Summary of the invention
The purpose of this invention is to provide a kind of axial inclined disc type hydraulic planger pump, because flow piston large end face is long-pending greater than the small end area, realize that thus pressure increases, flow reduces, and realizes variable displacement with constant power, otherwise when load reduces, the pressure at flow piston two ends reduces thereupon, the decrement when this moment, the power spring also maintained high pressure, and the hydraulic coupling of the large end of flow piston reduces, flow increases, and control mode is reasonable.
Technological scheme of the present invention is as follows:
Axial inclined disc type hydraulic planger pump, include the double step thrust piston, the a mouth of double step thrust piston, before the b mouth is connected respectively to, on the rear pump, the plunger end face overhead of double step thrust piston is in the adjustment (adjusting) lever end face, be set with the power spring on the adjustment (adjusting) lever, the rear side pressure of power spring is equipped with spring seat, the spool that is equipped with power control valve is pressed in the end of adjustment (adjusting) lever, spool is provided with step, power control valve has two hydraulic fluid port d mouths, the c mouth, spring seat is fixedly connected with the flow piston, the little distolateral valve pocket of flow piston and a mouth of double step thrust piston, the c mouth of power control valve connects, the c mouth of the valve pocket power control valve that the flow piston is distolateral greatly connects, and the flow piston is fixedly connected with the swash plate of plunger pump.
The rear end of described adjustment (adjusting) lever is fixed with fixed base, presses between fixed base and the spring seat and is putting the power spring.
Control mode of the present invention is reasonable, and pressure is regulated receptance and improved, and guaranteed the oil mass that load variations can be regulated oil pump in real time, thereby the pressure of oil circuit control is big or small, has effectively guaranteed the usability of load sensitive pump.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is the connection diagram between double step thrust piston and the power control valve.
Embodiment
Referring to accompanying drawing, axial inclined disc type hydraulic planger pump, include double step thrust piston 1, the a mouth of double step thrust piston 1, before the b mouth is connected respectively to, on the rear pump, the plunger end face overhead of double step thrust piston 1 is in adjustment (adjusting) lever 2 end faces, be set with power spring 3 on the adjustment (adjusting) lever 2, the rear side pressure of power spring 3 is equipped with spring seat 4, the spool 6 that is equipped with power control valve 5 is pressed in the end of adjustment (adjusting) lever 2, spool 6 is provided with step, power control valve 5 has two hydraulic fluid port d mouths, the c mouth, spring seat is fixedly connected with flow piston 7, flow piston 7 little distolateral valve pockets and a mouth of double step thrust piston, the c mouth of power control valve connects, the c mouth of the valve pocket power control valve that the flow piston is distolateral greatly connects, flow piston 7 is fixedly connected with the swash plate of plunger pump 8, and the rear end of adjustment (adjusting) lever is fixed with fixed base 9, presses between fixed base 9 and the spring seat and is putting power spring 3.
The thrust piston of double step of the present invention, a mouth connect the pressure oil of another pump (rear pump) of duplex plunger pump, and the b mouth connects the pressure oil of this pump (front pump), and the front and back pump respectively draws a road binders to thrust piston, realize the control of double pump intersection.Increase along with induced pressure, a, the pressure of b two hydraulic fluid ports is also along with increase, thrust piston promotes adjustment (adjusting) lever compression horsepower spring and promotes spool, d mouth and e mouth disconnected when the power spring-compressed arrived to a certain degree, d mouth and c mouth are connected, at this moment the large end of flow piston just begins oil-feed, because ' power=pressure * active area ' flow piston pressure at two ends is identical, large end face is long-pending greater than the small end area, so the flow piston can be moved to the left (flow reduces) under the effect of hydraulic coupling, the flow piston is moved to the left and drives the further compression horsepower spring of shifting block promotion spring seat, make thrust piston and adjustment (adjusting) lever all left, spool also is moved to the left thereupon, and c mouth and d mouth disconnect, the large end fuel cut-off of flow piston, the flow piston stops mobile, realizes that thus pressure increases, and flow reduces, make: pressure * flow=steady state value, realize variable displacement with constant power.Otherwise when load reduces, the pressure at flow piston two ends reduces thereupon, decrement when this moment, the power spring also maintained high pressure, the hydraulic coupling of the large end of flow piston reduces, be that spring force is greater than the hydraulic coupling of the large end of flow piston, the power spring just promote shifting block drive the flow piston to the right (large end) mobile, flow increases.
Claims (2)
1. axial inclined disc type hydraulic planger pump, include the double step thrust piston, it is characterized in that: a mouth of double step thrust piston, before the b mouth is connected respectively to, on the rear pump, the plunger end face overhead of double step thrust piston is in the adjustment (adjusting) lever end face, be set with the power spring on the adjustment (adjusting) lever, the rear side pressure of power spring is equipped with spring seat, the spool that is equipped with power control valve is pressed in the end of adjustment (adjusting) lever, spool is provided with step, power control valve has two hydraulic fluid port d mouths, the c mouth, spring seat is fixedly connected with the flow piston, the little distolateral valve pocket of flow piston and a mouth of double step thrust piston, the c mouth of power control valve connects, the c mouth of the valve pocket power control valve that the flow piston is distolateral greatly connects, and the flow piston is fixedly connected with the swash plate of plunger pump.
2. axial inclined disc type hydraulic planger pump according to claim 1, it is characterized in that: the rear end of described adjustment (adjusting) lever is fixed with fixed base, presses between fixed base and the spring seat and is putting the power spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210274384.7A CN102865207B (en) | 2012-08-01 | 2012-08-01 | Axially swash plate type hydraulic plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210274384.7A CN102865207B (en) | 2012-08-01 | 2012-08-01 | Axially swash plate type hydraulic plunger pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102865207A true CN102865207A (en) | 2013-01-09 |
| CN102865207B CN102865207B (en) | 2016-08-03 |
Family
ID=47444280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210274384.7A Expired - Fee Related CN102865207B (en) | 2012-08-01 | 2012-08-01 | Axially swash plate type hydraulic plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102865207B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234118A (en) * | 2013-12-13 | 2014-12-24 | 江苏恒立液压有限公司 | Pump for compact excavator |
| CN109779690A (en) * | 2017-11-11 | 2019-05-21 | 利勃海尔机械布勒有限公司 | The regulating device of axial piston machine |
| CN109854471A (en) * | 2019-02-01 | 2019-06-07 | 中航力源液压股份有限公司 | The hydraulic planger pump of two grades of power control devices |
| CN111980977A (en) * | 2020-07-24 | 2020-11-24 | 中国航空工业集团公司西安飞行自动控制研究所 | Cross power control valve for duplex hydraulic pump and duplex hydraulic pump |
| CN114135458A (en) * | 2021-11-30 | 2022-03-04 | 力源液压（苏州）有限公司 | Constant power control structure of plunger pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1906983A1 (en) * | 1969-02-07 | 1970-09-17 | Bellows Valvair Kaemper Gmbh | Device for keeping the product of pressure and stroke volume constant in positive displacement pumps |
| US5297941A (en) * | 1991-11-30 | 1994-03-29 | Samsung Heavy Industries Co., Ltd. | Control systems for hydraulic pumps of the variable displacement type |
| JPH10246177A (en) * | 1997-03-04 | 1998-09-14 | Kawasaki Heavy Ind Ltd | Double delivery swash plate type hydraulic piston pump |
| 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 |
| CN201560933U (en) * | 2009-10-22 | 2010-08-25 | 天津市泽华源泵业科技发展有限公司 | Self-assignment constant-power variable valve core mechanism |
| CN202937418U (en) * | 2012-08-01 | 2013-05-15 | 安徽博一流体传动股份有限公司 | Axial swash plate type hydraulic plunger pump |
-
2012
- 2012-08-01 CN CN201210274384.7A patent/CN102865207B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1906983A1 (en) * | 1969-02-07 | 1970-09-17 | Bellows Valvair Kaemper Gmbh | Device for keeping the product of pressure and stroke volume constant in positive displacement pumps |
| US5297941A (en) * | 1991-11-30 | 1994-03-29 | Samsung Heavy Industries Co., Ltd. | Control systems for hydraulic pumps of the variable displacement type |
| JPH10246177A (en) * | 1997-03-04 | 1998-09-14 | Kawasaki Heavy Ind Ltd | Double delivery swash plate type hydraulic piston pump |
| 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 |
| CN201560933U (en) * | 2009-10-22 | 2010-08-25 | 天津市泽华源泵业科技发展有限公司 | Self-assignment constant-power variable valve core mechanism |
| CN202937418U (en) * | 2012-08-01 | 2013-05-15 | 安徽博一流体传动股份有限公司 | Axial swash plate type hydraulic plunger pump |
Non-Patent Citations (2)
| Title |
|---|
| 史时喜: "恒功率变量泵的特性研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》, no. 3, 15 March 2010 (2010-03-15) * |
| 许福玲等: "《液压与气压传动》", 31 May 1997, article "柱塞泵", pages: 42-43 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234118A (en) * | 2013-12-13 | 2014-12-24 | 江苏恒立液压有限公司 | Pump for compact excavator |
| CN104234118B (en) * | 2013-12-13 | 2017-01-04 | 江苏恒立液压科技有限公司 | Mini-excavator pump |
| CN109779690A (en) * | 2017-11-11 | 2019-05-21 | 利勃海尔机械布勒有限公司 | The regulating device of axial piston machine |
| CN109854471A (en) * | 2019-02-01 | 2019-06-07 | 中航力源液压股份有限公司 | The hydraulic planger pump of two grades of power control devices |
| CN109854471B (en) * | 2019-02-01 | 2024-05-14 | 中航力源液压股份有限公司 | Hydraulic plunger pump of two-gear power control device |
| CN111980977A (en) * | 2020-07-24 | 2020-11-24 | 中国航空工业集团公司西安飞行自动控制研究所 | Cross power control valve for duplex hydraulic pump and duplex hydraulic pump |
| CN114135458A (en) * | 2021-11-30 | 2022-03-04 | 力源液压（苏州）有限公司 | Constant power control structure of plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102865207B (en) | 2016-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102865207A (en) | Axial swash plate type hydraulic plunger pump | |
| AU2018204390B2 (en) | Axial piston pump | |
| CN105443468B (en) | Fluid pressure drive device with fast travel and load stroke | |
| CN204060840U (en) | Engine lubrication system | |
| CN105275037A (en) | Hydraulic breaking hammer | |
| CN202937418U (en) | Axial swash plate type hydraulic plunger pump | |
| EP1825142A4 (en) | Variable displacement swash plate type compressor with smooth inclined moving feature | |
| CN201106538Y (en) | Tilting axis type axial plunger variable volume pump with auxiliary pump | |
| US20120275928A1 (en) | Hydraulic Piston Pump with Reduced Restriction Barrel Passage | |
| CN206017290U (en) | Load-sensitive axial plunger pump | |
| CN203214314U (en) | Return oil-less axial plunger pump | |
| CN201621027U (en) | Variable displacement pump of plunger | |
| CN105673373B (en) | No load discharge adjustable constant-pressure axial variable displacement plunger pump | |
| CN101328874B (en) | Hydraulic slurry pump | |
| CN204371654U (en) | Electromagnetic switch oblique plate plunger pump | |
| CN101798999B (en) | Variable stroke plunger pump and starting method thereof | |
| CN109519352B (en) | Plunger pump and engineering machinery | |
| CN203362499U (en) | Novel cylinder structure of axial plunger pump | |
| CN205714728U (en) | A kind of plunger displacement pump reducing noise | |
| CN201574929U (en) | Pressure regulator for variable vane pump | |
| CN205330951U (en) | Axial plunger pump | |
| CN205172849U (en) | Closed axial plunger hydraulic pump with adjustable automatically controlled cutting device | |
| CN104533740A (en) | Servo variable swash plate piston pump and control method thereof | |
| CN204371572U (en) | Servo variable displacement oblique plate plunger pump | |
| CN112901480B (en) | Three-stage gear pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Axial swash plate type hydraulic plunger pump Effective date of registration: 20170922 Granted publication date: 20160803 Pledgee: Hefei Xingtai financing guarantee Group Ltd. Pledgor: ANHUI BOYI FLUID POWER TRANSMISSION JOINT STOCK Co.,Ltd. Registration number: 2017340000244 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20181029 Granted publication date: 20160803 Pledgee: Hefei Xingtai financing guarantee Group Ltd. Pledgor: ANHUI BOYI FLUID POWER TRANSMISSION JOINT STOCK Co.,Ltd. Registration number: 2017340000244 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |