CN106523350B - A kind of adjustable type can be changed inner curve hydraulic pump or motor - Google Patents
A kind of adjustable type can be changed inner curve hydraulic pump or motor Download PDFInfo
- Publication number
- CN106523350B CN106523350B CN201611198650.7A CN201611198650A CN106523350B CN 106523350 B CN106523350 B CN 106523350B CN 201611198650 A CN201611198650 A CN 201611198650A CN 106523350 B CN106523350 B CN 106523350B
- Authority
- CN
- China
- Prior art keywords
- stator
- motor
- hydraulic pump
- adjustable
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C2/00—Rotary-piston engines
- F03C2/30—Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F03C2/304—Rotary-piston engines having the characteristics covered by two or more of groups F03C2/02, F03C2/08, F03C2/22, F03C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having both the movements defined in sub-group F03C2/08 or F03C2/22 and relative reciprocation between members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
- Hydraulic Motors (AREA)
- Rotary Pumps (AREA)
Abstract
The present invention relates to a kind of adjustable types can be changed inner curve hydraulic pump or motor, end cap, stator, the valve plate that it includes transmission shaft, is set gradually along the axial direction of transmission shaft, the inner wall of stator is intervally installed by multiple concave curved surfaces and multiple convex surfaces and is formed, the inner space of stator is provided with the rotor being connected with transmission shaft, rotor has multiple piston holes, the piston component being in contact with the inner wall of stator is provided in piston hole, rotor and valve plate all have the channel for conveying hydraulic oil, and the channel on rotor is connected with piston hole；The concave curved surface of stator inner wall along stator axially inclined setting, it further includes that one end is connected with stator and drives stator along the multiple adjustable columns itself moved axially, drives the motor that adjustable column moves by transmission component that adjustable type, which can be changed inner curve hydraulic pump or motor, the one end of adjustable column is bulb, which is connected by fixed plate with stator.
Description
Technical field
The present invention relates to a kind of inner curve hydraulic pump or motor more particularly to a kind of inner curve hydraulic pump that can be adjusted or
Motor.
Background technology
Small, light weight, compact-sized, balanced radial force, torque ripple are small with size for inner curve hydraulic pump/motor, pass
Dynamic torque is big, starting efficiency is high, and can be widely used in hoist engine, heavy row under very low rotating speed the advantages that steady operation
It walks in the hydraulic systems such as machinery, mining machinery, windlass peculiar to vessel, crane, other manufacturing tension systems.For require can
Drive (motor condition) and the operating mode of energy continuous braking (pump state), if the noon of hoist engine, crane is promoted and is fallen, heavy type
The driving and braking of machinery, tension system etc..
However, inner curve hydraulic pump/motor in the prior art is unadjustable in structure, the curved surface of stator inner wall is flat
Row is arranged in stator axial line, and stator and rotor can not move axially, whether motor operating conditions or pump condition, as long as
In the case where inputting constant, output is all constant.This makes it using the limitation received largely.
Invention content
In order to solve the problems in the prior art, the object of the present invention is to provide a kind of adjustable types can be changed inner curve hydraulic pump
Or motor.
In order to achieve the above object, the present invention provides a kind of adjustable types can be changed inner curve hydraulic pump or motor, it includes
Transmission shaft, end cap, stator, the valve plate set gradually along the axial direction of transmission shaft, the inner wall of stator is by multiple concave curved surfaces and more
A convex surface is intervally installed and forms, and the inner space of stator is provided with the rotor being connected with transmission shaft, and rotor has
Multiple piston holes are provided with the piston component being in contact with the inner wall of stator in piston hole, and rotor and valve plate, which all have, to be used for
The channel of hydraulic oil is conveyed, and the channel on rotor is connected with piston hole；The concave curved surface of stator inner wall along stator axial direction
It is obliquely installed, it further includes that one end is connected with stator and drives stator along itself that adjustable type, which can be changed inner curve hydraulic pump or motor,
The one end of multiple adjustable columns of axial movement, the motor that adjustable column movement is driven by transmission component, adjustable column is bulb, should
Bulb is connected by fixed plate with stator.It should be noted that concave curved surface can be defined as the axial line arch towards stator
The curved surface risen, then convex surface is the curved surface to arch upward towards stator outer wall, and concave curved surface can also be defined as towards mural arch outside stator
The curved surface risen, then convex surface is the curved surface to arch upward towards the axial line of stator.
Further, transmission component includes being connect with adjustable column phase threads turn and adjustable column being driven to be moved axially along itself
Adjusting gear ring, motor driving adjust ring gear against rotation.
Further, it adjusts gear ring and connection is engaged by gear with the output shaft of motor.
Further, the axial line of adjustable column and the parallel setting of the axial line of stator.
Further, adjustable column is arranged in the other side opposite with end cap side of stator.
Further, fixed plate is mutually fixedly connected with stator, and there is spherical pit, bulb to be rotatably arranged on stator
In the pit, and the opposite shifting between bulb and stator along stator shaft orientation is limited between pit and fixed plate and by fixed plate
It is dynamic.
Further, adjustable column at least there are three.
Further, multiple adjustable columns are uniformly distributed around the axial line of stator.
Further, concave curved surface moves closer to the axial line of stator from the side for being laterally away from end cap by the one of proximal cover.
Further, piston component includes a spring, the piston set gradually, and piston one end is cylindrical hole, the circle of piston
A spring, another end in contact stator inner wall of piston are connected in post holes.
By adopting the above-described technical solution, a kind of adjustable type of the present invention can be changed inner curve hydraulic pump or motor, pass through by
The concave curved surface of stator inner wall (i.e. the working face of stator) is designed as axial oblique, and stator is configured in axial direction
It is mobile, drive stator shaft orientation to move by adjustable column so that and the piston component on rotor can be moved along different inner curves,
And piston stroke, to change the output of pump/motor.Adjustable type of the present invention can be changed inner curve hydraulic pump or motor configuration letter
Single compact, use is easy to operate, makes inner curve hydraulic pump or motor in the case where inputting constant, also can be by structure
It adjusts to change output, has further widened the application range of inner curve hydraulic pump or motor.
Description of the drawings
Attached drawing 1 is the structural schematic diagram that a kind of adjustable type of the present invention can be changed inner curve hydraulic pump or motor；
Attached drawing 2 is the axial view that a kind of adjustable type of the present invention can be changed stator in inner curve hydraulic pump or motor.
Figure label is：
1, stator；11, concave curved surface；12, convex surface；13, pit；2, rotor；21, piston hole；22, a spring；23, living
Plug；24, second channel；3, end cap；4, valve plate；41, first passage；5, transmission shaft；6, adjustable column；61, bulb；7, tooth is adjusted
Circle；8, motor；9, fixed plate.
Specific implementation mode
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art.
Referring to attached drawing 1 to attached drawing 2, a kind of adjustable type in the present embodiment can be changed inner curve hydraulic pump or motor, and it includes passing
Moving axis 5, end cap 3, stator 1, the valve plate 4 set gradually along the axial direction of transmission shaft 5, the inner wall of stator 1 is by multiple concave curved surfaces
11 and multiple convex surfaces 12 be intervally installed and form, the inner space of stator 1 is provided with the rotor being connected with transmission shaft 5
2, rotor 2 has multiple piston holes, is provided with the piston component being in contact with the inner wall of stator 1 in piston hole 21, rotor 2 and matches
Flow table 4 all has the channel for conveying hydraulic oil, and the wherein channel on valve plate is first passage 41, the channel on rotor 2
For second channel 24, and second channel 24 is connected with piston hole 21.
Piston component in the present embodiment includes a spring 22, the piston 23 set gradually, and 23 one end of piston is cylindrical hole,
A spring 22, another 1 inner wall of end in contact stator of piston 23 are connected in the cylindrical hole of piston 23.The setting of one spring 22 can make
Piston 23 is adjacent to 1 inner wall of stator when working.
The concave curved surface 11 of 1 inner wall of stator is along the axially inclined setting of stator 1, extended surface and the stator 1 of concave curved surface 11
Axial line intersects.In the present embodiment, concave curved surface 11 moves closer to stator 1 from the side for being laterally away from end cap 3 by the one of proximal cover 3
Axial line, such as attached drawing 1 and attached drawing 2, in figure a points compare b points further from stator 1 axial line.It should be noted that concave curved surface
The curved surface to arch upward towards the axial line of stator is can be defined as, then convex surface is the curved surface to arch upward towards stator outer wall, concave curved
Face can also be defined as the curved surface to arch upward towards stator outer wall, then convex surface is the curved surface to arch upward towards the axial line of stator.
Concave curved surface in the present embodiment is the curved surface to arch upward towards stator outer wall.
It further includes that one end is connected with stator 1 and drives stator 1 along certainly that adjustable type, which can be changed inner curve hydraulic pump or motor,
Multiple adjustable columns 6 of body axial movement drive the motor 8 that adjustable column 6 moves, described one end of adjustable column 6 by transmission component
Portion is bulb 61, which is connected by fixed plate 9 with stator 1.
In a kind of highly preferred embodiment, transmission component includes connecting and driving with 6 phase threads turn of adjustable column
The adjusting gear ring 7 that adjustable column 6 is moved axially along itself, the axial line setting parallel with the axial line of stator 1 of adjustable column 6, electricity
The driving of machine 8 adjusts gear ring 7 and rotates.The inner ring for adjusting gear ring 7 is the helicitic texture.More preferably, adjust gear ring 7 outer ring with
The output shaft of motor 8 is engaged by gear (not indicated in figure) and is connected.
In a kind of highly preferred embodiment, fixed plate 9 is fixedly connected with 1 phase of stator, has spherical female on stator 1
Hole 13, bulb 61 is rotatably arranged in the pit 13, and is limited between pit 13 and fixed plate 9 and by fixed plate 9
Along the relative movement that stator 1 is axial between bulb 61 and stator 1.
Multiple adjustable columns 6 are uniformly distributed around the axial line of stator 1.Preferably, adjustable column 6 at least there are three.
Preferably, adjustable column 6 is arranged in the other side opposite with 3 side of end cap of stator 1.
This adjustable type can be changed inner curve hydraulic pump or motor operations principle：
Motor operating conditions：
Hydraulic oil enters rotor 2 by valve plate 4, i.e., arrives second channel 24 via first passage 41, until piston hole 21, this
When hydraulic oil push piston 23 that it is made to move reciprocatingly on 1 inner wall of stator, while moving in a circle in the radial direction of stator 1, from
And rotor 2 is made to be rotated.If hydraulic motor needs slow-speed of revolution high torque or high rpm low torque, motor 8 to pass through at this time
Rotation, which drives, adjusts the rotation of gear ring 7, and then adjustable column 6 is driven to rotate, since the screw thread adjusted between gear ring 7 and adjustable column 6 turns
Dynamic connection structure, adjustable column 6 axially move in rotation process, and change moving direction by changing rotation direction, from
And make adjustable column 6 that stator 1 be pushed to axially move, make piston 23 on the inner wall of stator 1 corresponding operating position (a, b point it
Between a certain operating position) on.To be exported.
Pump condition：
Exterior power source drives cylinder block of hydraulic pumps 2, and because a spring 22 is close to 1 inner wall of stator always, piston 23 passes through piston 23
Stator 1 is reciprocating to oil suction, if hydraulic pump needs high pump oil amount or low pump oil amount, motor 8 to pass through rotation at this time
It drives and adjusts the rotation of gear ring 7, and then adjustable column 6 is driven to rotate, since the threads turn adjusted between gear ring 7 and adjustable column 6 connects
Binding structure, adjustable column 6 axially move in rotation process, and change moving direction by changing rotation direction, to make
Adjustable column 6 pushes stator 1 to axially move, and makes the corresponding operating position (between a, b point on the inner wall of stator 1 of piston 23
A certain operating position) on.To be exported.
Adjustable type of the present invention can be changed inner curve hydraulic pump or motor, by by the recessed of stator inner wall (i.e. the working face of stator)
Curved design is oblique in axial direction, and stator is configured to move axially, and stator axis is driven by adjustable column
To movement so that the piston component on rotor can be moved along different inner curves, and piston stroke, to change pump/
The output of motor.Adjustable type of the present invention can be changed inner curve hydraulic pump or motor configuration simple and compact, and use is easy to operate, makes introversion
Line hydraulic pump or motor also can change output by the adjusting in structure, further widen in the case where inputting constant
The application range of inner curve hydraulic pump or motor.
The present invention is elaborated above in association with embodiment, only technical concepts and features to illustrate the invention,
Its object is to allow person skilled in the art to understand present disclosure and be implemented, it can not limit the present invention's with this
Protection domain, all equivalent change or modifications done according to spirit of the invention, should all cover in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of adjustable type can be changed inner curve hydraulic pump or motor, it includes transmission shaft (5), along the axis of the transmission shaft (5)
To the end cap (3), stator (1), valve plate (4) set gradually, the inner wall of the stator (1) is by multiple concave curved surfaces (11) and multiple
Convex surface (12) is intervally installed and forms, and the inner space of the stator (1) is provided with to be connected with the transmission shaft (5)
Rotor (2), the rotor (2) has multiple piston holes, is provided with and the stator (1) in the piston hole (21)
The piston component that inner wall is in contact, the rotor (2) and valve plate (4) all have the channel for conveying hydraulic oil, and turn
The channel on sub (2) is connected with the piston hole (21), it is characterised in that：
The concave curved surface (11) of stator (1) inner wall along stator (1) axially inclined setting,
It further includes that one end is connected with the stator (1) and drives calmly that the adjustable type, which can be changed inner curve hydraulic pump or motor,
The motor that sub (1) drives the adjustable column (6) mobile along the multiple adjustable columns (6) itself moved axially, by transmission component
(8), the one end of adjustable column (6) is bulb (61), which is connected by fixed plate (9) with stator (1).
2. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：The biography
Dynamic component includes the adjusting tooth for connecting and driving adjustable column (6) to be moved axially along itself with the adjustable column (6) phase threads turn
It encloses (7), the motor (8) drives adjusting gear ring (7) rotation.
3. a kind of adjustable type according to claim 2 can be changed inner curve hydraulic pump or motor, it is characterised in that：The tune
Section gear ring (7) engages connection with the output shaft of motor (8) by gear.
4. a kind of adjustable type according to claim 1 or 2 can be changed inner curve hydraulic pump or motor, it is characterised in that：It is described
Adjustable column (6) axial line setting parallel with the axial line of stator (1).
5. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：The tune
Segmented column (6) is arranged in the other side opposite with end cap (3) side of stator (1).
6. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：Described consolidates
Fixed board (9) is mutually fixedly connected with stator (1), and there is spherical pit (13), the bulb (61) can turn on the stator (1)
It is arranged dynamicly in the pit (13), and bulb (61) is limited between pit (13) and fixed plate (9) and by fixed plate (9)
Along the relative movement of stator (1) axial direction between stator (1).
7. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：The tune
Segmented column (6) at least there are three.
8. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：Described is more
A adjustable column (6) is uniformly distributed around the axial line of stator (1).
9. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：Described is recessed
Curved surface (11) moves closer to the axial line of stator (1) from the side for being laterally away from end cap (3) by the one of proximal cover (3).
10. a kind of adjustable type according to claim 1 can be changed inner curve hydraulic pump or motor, it is characterised in that：Described
Piston component includes the spring (22) set gradually, piston (23), and piston (23) one end is cylindrical hole, the cylinder of piston (23)
A spring (22), another end in contact stator (1) inner wall of piston (23) are connected in hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611198650.7A CN106523350B (en) | 2016-12-22 | 2016-12-22 | A kind of adjustable type can be changed inner curve hydraulic pump or motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611198650.7A CN106523350B (en) | 2016-12-22 | 2016-12-22 | A kind of adjustable type can be changed inner curve hydraulic pump or motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523350A CN106523350A (en) | 2017-03-22 |
| CN106523350B true CN106523350B (en) | 2018-10-16 |
Family
ID=58340739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611198650.7A Active CN106523350B (en) | 2016-12-22 | 2016-12-22 | A kind of adjustable type can be changed inner curve hydraulic pump or motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523350B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356847B (en) * | 2018-11-21 | 2024-05-03 | 南昌大学 | Quantitative ball plug pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206309592U (en) * | 2016-12-22 | 2017-07-07 | 苏州九合众成动力科技有限公司 | A kind of variable inner curve hydraulic pump of adjustable type or motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562480A (en) * | 1979-06-20 | 1981-01-12 | Hitachi Constr Mach Co Ltd | Radial pump motor |
| DD294064A5 (en) * | 1990-05-02 | 1991-09-19 | Veb Industriewerke Chemnitz,De | HYDROSTATIC RADIAL PISTON MACHINE |
| CN100398800C (en) * | 2006-03-09 | 2008-07-02 | 西南大学 | Integrated fuel layering variable jetting device |
| JP2009121637A (en) * | 2007-11-16 | 2009-06-04 | Toyota Motor Corp | Fluid device |
-
2016
- 2016-12-22 CN CN201611198650.7A patent/CN106523350B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206309592U (en) * | 2016-12-22 | 2017-07-07 | 苏州九合众成动力科技有限公司 | A kind of variable inner curve hydraulic pump of adjustable type or motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106523350A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104196720B (en) | A kind of variable vane pump discharge capacity regulates uses AC servo machinery driving device | |
| US6837141B1 (en) | Polyphase hydraulic drive system | |
| CN101684783A (en) | Plunger pump | |
| CN106523350B (en) | A kind of adjustable type can be changed inner curve hydraulic pump or motor | |
| CN106523349B (en) | Adjustable type can be changed inner curve hydraulic pump or motor | |
| CN206309592U (en) | A kind of variable inner curve hydraulic pump of adjustable type or motor | |
| JP6562296B2 (en) | Piston reciprocating mechanism, pump, compressor, and vacuum pump | |
| SE540991C2 (en) | Pump / motor including a gear function | |
| CN206280241U (en) | The variable inner curve hydraulic pump of adjustable type or motor | |
| CN109000141A (en) | A kind of rotor-type oil pump can be reduced abrasion | |
| CN205533187U (en) | Wide speed range's three effect impeller pumps | |
| CN202645905U (en) | Double-kinetic-energy flow control pump | |
| CN203604288U (en) | Valve plate for integrated type hydraulic transformer | |
| CN202170868U (en) | Vane pump | |
| CN107288870B (en) | Hydraulic power unit and its pump | |
| CN103375399A (en) | Double-kinetic-energy sliding piece swinging type controllable flow pump | |
| CN205025701U (en) | No profit pump of rotatory four plungers of curved surface variable high pressure | |
| CN104564584A (en) | Driving unit and quick-operation machine having same | |
| CN204877819U (en) | Eccentric gyration power end structure of reciprocating pump | |
| CN204553211U (en) | A kind of helical rotor displacement pump | |
| CN104500363A (en) | Plunger pump with lubricating system | |
| CN108799045B (en) | Vector control pump | |
| CN105317645B (en) | Opposed end-surface type Flat valve axial plunger pump | |
| US20100011906A1 (en) | Adjustment Mechanism for Strokeadjustable Reciprocating Fluid Machine | |
| KR200174582Y1 (en) | A power delivering sturucture in crankshaft in high pressure pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |