CN112377382A - Variable axial plunger pump based on proportional pressure reducing valve control - Google Patents
Variable axial plunger pump based on proportional pressure reducing valve control Download PDFInfo
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- CN112377382A CN112377382A CN202011271322.1A CN202011271322A CN112377382A CN 112377382 A CN112377382 A CN 112377382A CN 202011271322 A CN202011271322 A CN 202011271322A CN 112377382 A CN112377382 A CN 112377382A
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- pressure reducing
- reducing valve
- control
- swash plate
- proportional pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/26—Control
- F04B1/30—Control of machines or pumps with rotary cylinder blocks
- F04B1/32—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block
- F04B1/324—Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a variable axial plunger pump based on control of a proportional pressure reducing valve, which comprises the proportional pressure reducing valve, a shuttle valve, a pressure sensor, an inclination angle sensor, a variable controller, a shell, a discharge control mechanism and the like; the displacement control mechanism comprises a swash plate cradle, a swash plate inclination angle control piston pair and a swash plate inclination angle reset piston pair; a casing flow passage of the pump is innovatively designed, an oil inlet pipeline is communicated with a port plate window, the inside of the casing is also connected through a shuttle valve, and an oil outlet of the shuttle valve is respectively communicated with an oil inlet of a proportional pressure reducing valve and a reset piston through the flow passage; the oil outlet of the proportional pressure reducing valve is communicated with the control piston through a flow passage; hydraulic oil flows into the control piston after being subjected to pressure regulation by the proportional pressure reducing valve, and displacement internal control can be realized by the proportional pressure reducing valve under the condition that the plunger pump rotates clockwise and anticlockwise; the axial plunger pump variable mechanism is simple and reliable, high in control precision and high in integration level, and has great application value in a pump control cylinder system in the field of aerospace aviation.
Description
Technical Field
The invention relates to the field of hydraulic pump design, in particular to a variable axial plunger pump based on proportional pressure reducing valve control.
Background
The variable pump is one of power elements of the hydraulic system, plays a role in lifting the system performance, and the control performance and the control flexibility of the variable hydraulic pump are increasingly required in various application fields. The variable plunger pump is used as a power source in a hydraulic system, has the advantages of energy conservation, accurate control, high response speed, long service life and the like, and is widely applied to the fields of military equipment, equipment machinery, aviation and navigation, metallurgical equipment and the like. The variable mechanism of the axial plunger pump mainly comprises a mechanical type, a hydraulic servo type, a self-pressure control type and the like according to an actuating mechanism, and the variable forms comprise pressure control, flow control, power control and the like. These variable mechanisms usually rely on complicated oil circuit feedback and valve bank control to realize corresponding variable control functions, not only design and processing difficulties are high, but also the flexibility of variable control is low, and if the realization of composite control is required, the pump structure is very complicated. In the face of various variable modes, it is particularly important to select a proper variable mode according to the use requirements of different working conditions.
Disclosure of Invention
The invention aims to provide a novel variable axial plunger pump based on proportional pressure reducing valve control aiming at special application requirements of the aerospace field on the weight, the volume and the performance of parts, namely, the proportional pressure reducing valve is adopted to directly adjust the inclination angle of a swash plate to control the pressure of hydraulic oil in a piston cavity, so as to perform variable control on the plunger pump; the pump is innovatively designed on the basis of the original pump shell, and the control unit and the pump body are integrated by utilizing the special design of the shuttle valve and the shell pipeline, so that the variable performance of the pump is improved, and the overall equipment quality of elements is reduced; the improved variable axial plunger pump can be applied to an aerospace closed pump cylinder control system.
The purpose of the invention is realized by the following technical scheme: a variable axial plunger pump based on proportional pressure reducing valve control comprises a proportional pressure reducing valve, a shuttle valve, a pressure sensor, an inclination angle sensor, a variable controller, a shell, a main shaft, a plunger pair and a displacement control mechanism;
the plunger pair comprises a cylinder body, a valve plate, a plunger and a sliding shoe; the displacement control mechanism comprises a swash plate cradle, a swash plate inclination angle control piston pair and a swash plate inclination angle reset piston pair;
the main shaft penetrates through a center hole of the swash plate cradle and is connected with the cylinder body through a spline; the swash plate cradle is provided with a sliding shoe and is connected with a plunger, the plunger is matched with a plunger hole on a cylinder body according to the size requirement and is positioned on the same graduated circle, and the main axis of the plunger hole on the cylinder body is parallel to the axis of a main shaft; the swash plate cradle is fixedly arranged on the shell through two bearings, and the bearings are positioned and sealed through bearing end covers;
the oil inlet and outlet of the shell are communicated with the window of the valve plate, the oil inlet and outlet are communicated through an additionally designed flow passage in the shell, a shuttle valve is arranged in the flow passage, and an oil inlet A, B of the shuttle valve is respectively communicated with the oil inlet and outlet of the shell; an oil outlet C of the shuttle valve is respectively communicated with an oil inlet of the proportional pressure reducing valve and the swash plate inclination angle reset piston through a flow channel; an oil outlet of the proportional pressure reducing valve is communicated with a swash plate inclination angle control piston through a flow channel;
the pressure sensor is communicated with an oil outlet C of the shuttle valve through a flow passage and is used for measuring the pressure of the oil outlet C of the shuttle valve; the inclination angle sensor is arranged on the end surface of the fixed shaft at one side of the swash plate cradle and is used for measuring the rotating inclination angle of the swash plate cradle; the inclination angle sensor, the pressure sensor and the proportional pressure reducing valve are all connected with a variable controller;
the variable controller adjusts the outlet pressure of the proportional pressure reducing valve according to feedback signals collected by the inclination angle sensor and the pressure sensor, so that the inclination angle of the swash plate is adjusted to control the pressure of hydraulic oil in the piston cavity, the inclination angle of the swash plate is further controlled, and variable control of the axial plunger pump is achieved.
Further, a plug-in type proportional pressure reducing valve mounting opening is formed in the shell and used for mounting the proportional pressure reducing valve.
Furthermore, the cylinder body is cylindrical in shape, and the diameter of an oil groove opening of the cylinder body is consistent with the diameter of an oil flow window reference circle on the rear cover of the pump; meanwhile, a cylinder body bus is parallel to the axis of the plunger piston hole, and the main shaft is connected with the inner hole of the cylinder body through an involute spline.
Further, the prime mover of the axial piston pump is an electric motor with adjustable rotation speed, or a common electric motor with fixed rotation speed, or an internal combustion engine without fuel drive.
Further, the proportional pressure reducing valve is a plug-in high-frequency proportional pressure reducing valve.
Further, the two sides of the shell are provided with orifices for mounting the swash plate cradle bearing, and the orifices are sealed through bearing end covers.
Further, the swash plate inclination angle reset piston pair comprises a reset piston cavity, a reset piston, a reset spring and a top ball; the swash plate inclination angle control piston pair comprises a control piston cavity, a control piston and a connecting rod; one end of the top ball is connected with the swash plate cradle through threads, and the other end of the top ball is mutually pressed with the reset piston through a reset spring; one end of the connecting rod is hinged on the swash plate rocking frame through a pin shaft, and the other end of the connecting rod is hinged on the control piston through a ball.
Furthermore, the control piston cavity and the reset piston cavity are in threaded connection with the bottom of the inner cavity of the shell, a pore channel is formed in the control piston cavity and used for allowing hydraulic oil to flow in, and the interior of the piston cavity is communicated with the upper flow channel of the shell.
The invention has the beneficial effects that: aiming at the special application requirements of aerospace and aviation directions on parts, the plunger pump shell flow channel and the controller are redesigned, and the plunger pump has high-precision variable control under the condition of high-speed operation through the use of the proportional pressure reducing valve, so that the overall equipment quality is reduced and the reliability of hydraulic system control is improved on the premise of meeting the working performance requirements. Through the innovative use of the shuttle valve, the direction change of the plunger pump can be changed to directly control the extension and retraction of the swash plate control piston, reliable variable control of the plunger pump is still realized on the basis, a simple pump control cylinder hydraulic system is built, the use number of hydraulic components is reduced, the clockwise and counterclockwise motion control of the plunger pump is conveniently realized, the flow does not need to be exchanged for many times through redundant elements such as reversing valves, one-way valves and the like, and the formed system is high in integration level and large in power-to-weight ratio. The variable axial plunger pump based on the proportional pressure reduction valve control has great use value in the field of aerospace, such as an electro-hydraulic actuator in an aircraft.
Drawings
FIG. 1 is a variable control schematic of a variable displacement axial piston pump based on proportional pressure reducing valve control according to the present invention;
FIG. 2 is a schematic view of the axial structure of the parts of the plunger pump shell:
fig. 3 is a schematic bottom view of the structure of the parts of the plunger pump shell:
fig. 4 is a left side view schematically showing the structure of the parts of the plunger pump shell:
FIG. 5 is a sectional view of the plunger pump housing part A-A;
FIG. 6 is a schematic diagram of the construction of the displacement control mechanism of the plunger pump;
FIG. 7 is a schematic sectional view of the displacement control mechanism of the plunger pump;
FIG. 8 is a schematic diagram of the axial structure of the displacement control mechanism of the plunger pump;
FIG. 9 is a schematic view of the overall assembly structure of the plunger pump;
in the figure, a plunger pair 1, a swash plate inclination angle return piston pair 2, a return piston cavity 201, a return piston 202, a return spring 203, a top ball 204, a swash plate inclination angle control piston pair 3, a connecting rod 301, a control piston 302, a control piston cavity 303, a proportional pressure reducing valve 4, a shuttle valve 5, a pressure sensor 6, an inclination angle sensor 7, a variable controller 8 and a swash plate cradle 9.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in fig. 1-5, the variable axial plunger pump based on proportional pressure reducing valve control provided by the invention is mainly based on plunger pump appearance design, plunger pump housing flow channel design, and innovative application of a shuttle valve and a proportional pressure reducing valve, and comprises a proportional pressure reducing valve 4, a shuttle valve 5, a pressure sensor 6, an inclination angle sensor 7, a variable controller 8, a housing, a main shaft, a plunger pair 1 and a discharge control mechanism;
the plunger pair 1 comprises a cylinder body, a valve plate, a plunger and a sliding shoe; the displacement control mechanism comprises a swash plate cradle 9, a swash plate inclination angle control piston pair 3 and a swash plate inclination angle reset piston pair 2;
the main shaft penetrates through a central hole of the swash plate cradle 9 and is connected with the cylinder body through a spline; the swash plate cradle 9 is provided with a sliding shoe and is connected with a plunger, the plunger is matched with a plunger hole on a cylinder body according to the size requirement and is positioned on the same graduated circle, and the main axis of the plunger hole on the cylinder body is parallel to the axis of a main shaft; the swash plate cradle 9 is fixedly arranged on the shell through two bearings, and the bearings are positioned and sealed through bearing end covers;
the oil inlet and outlet of the shell are communicated with the window of the valve plate, the oil inlet and outlet are communicated through an additionally designed flow passage in the shell, a shuttle valve 5 is installed in the flow passage, and an oil inlet A, B of the shuttle valve 5 is respectively communicated with the oil inlet and outlet of the shell; an oil outlet C of the shuttle valve 5 is respectively communicated with an oil inlet of the proportional reducing valve 4 and the swash plate inclination angle reset piston 202 through a flow passage; an oil outlet of the proportional pressure reducing valve 4 is communicated with a swash plate inclination angle control piston 302 through a flow channel;
the pressure sensor 6 is communicated with an oil outlet C of the shuttle valve 5 through a flow passage and is used for measuring the pressure of the oil outlet C of the shuttle valve 5; the inclination angle sensor 7 is arranged on the end surface of the fixed shaft at one side of the swash plate cradle 9 and is used for measuring the rotating inclination angle of the swash plate cradle 9; the inclination angle sensor 7, the pressure sensor 6 and the proportional pressure reducing valve 4 are all connected with a variable controller 8;
the variable controller 8 adjusts the outlet pressure of the proportional pressure reducing valve 4 according to the feedback signals collected by the inclination angle sensor 7 and the pressure sensor 6, so that the inclination angle of the swash plate is adjusted to control the pressure of hydraulic oil in the piston cavity 303, the inclination angle of the swash plate is further controlled, and variable control of the axial plunger pump is achieved.
As shown in fig. 6-9, the displacement control mechanism of the axial plunger pump comprises a swash plate cradle 9, a swash plate inclination angle control piston pair 3 and a swash plate inclination angle reset piston pair 2; the swash plate inclination angle reset piston pair 2 comprises a reset piston cavity 201, a reset piston 202, a reset spring 203 and a top ball 204; the swash plate inclination angle control piston pair 3 comprises a control piston cavity 303, a control piston 302 and a connecting rod 301; one end of the top ball 204 is connected with the swash plate cradle 9 through threads, and the other end of the top ball is mutually pressed with the reset piston 202 through the reset spring 203; one end of the connecting rod 301 is hinged on the swash plate cradle 9 through a pin shaft, and the other end is hinged on the control piston 302 through a ball. Furthermore, the control piston cavity 303 and the reset piston cavity 201 are in threaded connection with the bottom of the inner cavity of the shell, a pore passage is formed in the control piston cavity for hydraulic oil to flow in, and the interior of the piston cavity is communicated with an upper flow passage of the shell.
Further, the prime mover of the axial piston pump is an electric motor with adjustable rotation speed, or a common electric motor with fixed rotation speed, or an internal combustion engine without fuel drive. The cylinder body is cylindrical, and the diameter of an oil groove opening of the cylinder body is consistent with the diameter of an oil flow window reference circle on the rear cover of the pump; meanwhile, a cylinder body bus is parallel to the axis of the plunger piston hole, and the main shaft is connected with the inner hole of the cylinder body through an involute spline. The two sides of the shell are provided with orifices for mounting the swash plate cradle bearing, and the orifices are sealed by bearing end covers. The casing is provided with a plug-in type proportional pressure reducing valve mounting port for mounting a proportional pressure reducing valve, and the proportional pressure reducing valve adopts a plug-in type high-frequency proportional pressure reducing valve.
The invention can realize that the axial plunger pump can carry out self variable control by means of the oil pressure generated by the plunger pump under the condition of clockwise or anticlockwise rotation, and the control precision and the working reliability are improved by applying the proportional pressure reducing valve 4. According to the pump shell of the axial plunger variable displacement pump, the oil pressing port and the oil suction port are respectively communicated with the window of the swash plate, meanwhile, the oil pressing port and the oil suction port are also communicated in the shell through the shuttle valve 5, the oil outlet of the shuttle valve 5 is communicated with the oil inlet of the proportional pressure reducing valve 4, the oil pressure is adjusted through the proportional pressure reducing valve 4 and then enters the control piston cavity 303 through the outlet of the proportional pressure reducing valve 4, and the inclination angle control of the swash plate is achieved. In which a shuttle valve 5 is installed so that hydraulic oil is supplied from a port plate P when an axial plunger pump is rotated clockwiseAOne part of the oil enters a working system to drive an actuator to work, the other part of the oil enters from a shuttle valve port A, a shuttle valve port B is closed, the oil flows to the proportional reducing valve 4 from a shuttle valve port C, and the oil is regulated by the proportional reducing valve 4, so that the extension of the swash plate control piston 302 is regulated; when the axial plunger pump rotates anticlockwise, hydraulic oil flows from the port plate PBAnd one part of oil enters the working system from the port B of the shuttle valve, the port A of the shuttle valve is closed, the oil flows to the proportional reducing valve 4 from the port C of the shuttle valve, and the extension of the swash plate control piston 302 is adjusted through the adjustment of the proportional reducing valve 4.
Finally, it should be noted that the above description is only one specific application example of the present invention, and is not intended to limit the present invention, and other application examples similar to the basic principle of the present invention should also belong to the protection scope of the present invention.
Claims (8)
1. A variable axial plunger pump based on proportional pressure reducing valve control is characterized by comprising a proportional pressure reducing valve, a shuttle valve, a pressure sensor, an inclination angle sensor, a variable controller, a shell, a main shaft, a plunger pair and a displacement control mechanism;
the plunger pair comprises a cylinder body, a valve plate, a plunger and a sliding shoe; the displacement control mechanism comprises a swash plate cradle, a swash plate inclination angle control piston pair and a swash plate inclination angle reset piston pair;
the main shaft penetrates through a center hole of the swash plate cradle and is connected with the cylinder body through a spline; the swash plate cradle is provided with a sliding shoe and is connected with a plunger, the plunger is matched with a plunger hole on a cylinder body according to the size requirement and is positioned on the same graduated circle, and the main axis of the plunger hole on the cylinder body is parallel to the axis of a main shaft; the swash plate cradle is fixedly arranged on the shell through two bearings, and the bearings are positioned and sealed through bearing end covers;
the oil inlet and outlet of the shell are communicated with the window of the valve plate, the oil inlet and outlet are communicated through an additionally designed flow passage in the shell, a shuttle valve is arranged in the flow passage, and an oil inlet A, B of the shuttle valve is respectively communicated with the oil inlet and outlet of the shell; an oil outlet C of the shuttle valve is respectively communicated with an oil inlet of the proportional pressure reducing valve and the swash plate inclination angle reset piston through a flow channel; an oil outlet of the proportional pressure reducing valve is communicated with a swash plate inclination angle control piston through a flow channel;
the pressure sensor is communicated with an oil outlet C of the shuttle valve through a flow passage and is used for measuring the pressure of the oil outlet C of the shuttle valve; the inclination angle sensor is arranged on the end surface of the fixed shaft at one side of the swash plate cradle and is used for measuring the rotating inclination angle of the swash plate cradle; the inclination angle sensor, the pressure sensor and the proportional pressure reducing valve are all connected with a variable controller;
the variable controller adjusts the outlet pressure of the proportional pressure reducing valve according to feedback signals collected by the inclination angle sensor and the pressure sensor, so that the inclination angle of the swash plate is adjusted to control the pressure of hydraulic oil in the piston cavity, the inclination angle of the swash plate is further controlled, and variable control of the axial plunger pump is achieved.
2. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: and the shell is provided with a plug-in type proportional pressure reducing valve mounting port for mounting a proportional pressure reducing valve.
3. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: the cylinder body is cylindrical, and the diameter of an oil groove opening of the cylinder body is consistent with the diameter of an oil flow window reference circle on the rear cover of the pump; meanwhile, a cylinder body bus is parallel to the axis of the plunger piston hole, and the main shaft is connected with the inner hole of the cylinder body through an involute spline.
4. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: the prime mover of the axial piston pump is an electric motor with adjustable rotation speed, or a common electric motor with fixed rotation speed, or an internal combustion engine without fuel drive.
5. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: the proportional pressure reducing valve is a plug-in high-frequency proportional pressure reducing valve.
6. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: and two sides of the shell are provided with orifices for mounting the swash plate cradle bearing, and the orifices are sealed by bearing end covers.
7. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: the swash plate inclination angle reset piston pair comprises a reset piston cavity, a reset piston, a reset spring and a top ball; the swash plate inclination angle control piston pair comprises a control piston cavity, a control piston and a connecting rod; one end of the top ball is connected with the swash plate cradle through threads, and the other end of the top ball is mutually pressed with the reset piston through a reset spring; one end of the connecting rod is hinged on the swash plate rocking frame through a pin shaft, and the other end of the connecting rod is hinged on the control piston through a ball.
8. The variable axial piston pump based on proportional pressure reducing valve control of claim 1, wherein: the control piston cavity and the reset piston cavity are in threaded connection with the bottom of the inner cavity of the shell, a pore channel is formed in the control piston cavity and used for allowing hydraulic oil to flow in, and the interior of the piston cavity is communicated with an upper flow channel of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271322.1A CN112377382B (en) | 2020-11-13 | 2020-11-13 | Variable axial plunger pump based on proportional pressure reducing valve control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011271322.1A CN112377382B (en) | 2020-11-13 | 2020-11-13 | Variable axial plunger pump based on proportional pressure reducing valve control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112377382A true CN112377382A (en) | 2021-02-19 |
| CN112377382B CN112377382B (en) | 2021-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011271322.1A Active CN112377382B (en) | 2020-11-13 | 2020-11-13 | Variable axial plunger pump based on proportional pressure reducing valve control |
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| Country | Link |
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| CN (1) | CN112377382B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221052A (en) * | 2023-05-08 | 2023-06-06 | 石家庄凯林机械有限公司 | Variable pump control device for mining electric vehicle |
| CN116677581A (en) * | 2023-05-30 | 2023-09-01 | 江苏可奈力机械制造有限公司 | Plunger type swash plate pump with hydraulic adjusting function |
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| CN106068389A (en) * | 2014-03-20 | 2016-11-02 | 丹佛斯动力系统公司 | Electronic torque and Stress control for load-sensing pump |
| CN106286435A (en) * | 2016-08-30 | 2017-01-04 | 力源液压（苏州）有限公司 | A kind of digital Variable plunger pump and control method |
| CN106481526A (en) * | 2015-08-26 | 2017-03-08 | 罗伯特·博世有限公司 | Hydrostatic Axial Piston Machine |
| CN106939881A (en) * | 2017-04-01 | 2017-07-11 | 浙江大学 | Reduce the fairing of axial plunger pump churn loss |
| CN109519352A (en) * | 2018-10-22 | 2019-03-26 | 徐州重型机械有限公司 | Plunger pump and engineering machinery |
| CN110657078A (en) * | 2019-10-09 | 2020-01-07 | 太原理工大学 | Swash plate type plunger pump variable mechanism capable of continuously and proportionally adjusting flow |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU468028A1 (en) * | 1971-09-16 | 1975-04-25 | Экспериментальный научно-исследовательский институт металлорежущих станков | Axial piston variable pump |
| DE2322890A1 (en) * | 1972-06-13 | 1973-12-20 | Sperry Rand Corp | PRE-OPERATED PRESSURE REGULATOR |
| DE102006037593A1 (en) * | 2006-08-11 | 2008-02-14 | Robert Bosch Gmbh | Swash plate machine with rotating cylinders includes sound-deadening elastomer layers in control disc supported against end plate of machine casing |
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| CN106068389A (en) * | 2014-03-20 | 2016-11-02 | 丹佛斯动力系统公司 | Electronic torque and Stress control for load-sensing pump |
| CN106481526A (en) * | 2015-08-26 | 2017-03-08 | 罗伯特·博世有限公司 | Hydrostatic Axial Piston Machine |
| CN106286435A (en) * | 2016-08-30 | 2017-01-04 | 力源液压（苏州）有限公司 | A kind of digital Variable plunger pump and control method |
| CN106939881A (en) * | 2017-04-01 | 2017-07-11 | 浙江大学 | Reduce the fairing of axial plunger pump churn loss |
| CN109519352A (en) * | 2018-10-22 | 2019-03-26 | 徐州重型机械有限公司 | Plunger pump and engineering machinery |
| CN110657078A (en) * | 2019-10-09 | 2020-01-07 | 太原理工大学 | Swash plate type plunger pump variable mechanism capable of continuously and proportionally adjusting flow |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116221052A (en) * | 2023-05-08 | 2023-06-06 | 石家庄凯林机械有限公司 | Variable pump control device for mining electric vehicle |
| CN116221052B (en) * | 2023-05-08 | 2023-07-04 | 石家庄凯林机械有限公司 | Variable pump control device for mining electric vehicle |
| CN116677581A (en) * | 2023-05-30 | 2023-09-01 | 江苏可奈力机械制造有限公司 | Plunger type swash plate pump with hydraulic adjusting function |
| CN116677581B (en) * | 2023-05-30 | 2023-10-31 | 江苏可奈力机械制造有限公司 | Plunger type swash plate pump with hydraulic adjusting function |
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| Publication number | Publication date |
|---|---|
| CN112377382B (en) | 2021-12-24 |
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