CN113719402A - Electro-hydraulic dual-drive motor - Google Patents
Electro-hydraulic dual-drive motor Download PDFInfo
- Publication number
- CN113719402A CN113719402A CN202111299907.9A CN202111299907A CN113719402A CN 113719402 A CN113719402 A CN 113719402A CN 202111299907 A CN202111299907 A CN 202111299907A CN 113719402 A CN113719402 A CN 113719402A
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- rotor
- stator
- piston
- drive motor
- hydraulic
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Classifications
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- 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
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/26—Reciprocating-piston liquid engines adapted for special use or combined with apparatus driven thereby
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- 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
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Power Engineering (AREA)
- Hydraulic Motors (AREA)
Abstract
The invention discloses an electro-hydraulic dual-drive motor, which comprises a cylinder body, wherein the cylinder body comprises a stator, a rotor corresponding to the stator is rotatably arranged in the cylinder body, a plurality of piston holes are formed in the peripheral wall of the rotor, a piston assembly is arranged in each piston hole, an oil passage is formed in the cylinder body and communicated with the piston holes, hydraulic oil is introduced into each oil passage, a ball body of each piston assembly is in contact with an inner curve of the stator under the action of the hydraulic oil, the hydraulic oil drives the rotor to rotate relative to the stator, a reset structure for driving the piston assembly to move towards one side away from the stator is arranged in each piston hole, a motor is fixedly arranged at the other end of the cylinder body relative to the rotor, the output end of the motor is connected with a connecting shaft, the rotor is connected to the periphery of the connecting shaft and is coaxially arranged with the connecting shaft, high-load hydraulic drive and low-load motor drive can be switched, so that the dual-drive motor is suitable for different working conditions, meanwhile, the problems of multiple elements and complex control systems under different working conditions on the same station are solved.
Description
Technical Field
The invention relates to the technical field of hydraulic systems, in particular to an electro-hydraulic dual-drive motor.
Background
With the continuous development of the mechanical industry, energy conservation and emission reduction become new requirements for future development of mechanical equipment, especially, under the condition that elements are not added, a single element is adopted to implement free switching between load and energy conservation, the existing hydraulic motor can meet the working condition under the condition of high load, but when the hydraulic motor is under the condition of light load, the output energy of the hydraulic motor far exceeds the load, namely, the single hydraulic motor has surplus power under the condition of light load, and the energy consumption is wasted, so that a motor structure which can be suitable for different working conditions needs to be designed.
Disclosure of Invention
The invention aims to provide an electro-hydraulic dual-drive motor which can be switched between high-load hydraulic drive and low-load motor drive, so that the dual-drive motor is suitable for different working conditions, and the problems of multiple elements and a complex control system under different working conditions on the same station are solved.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides an electricity liquid dual drive motor, includes the cylinder body, the cylinder body is including the stator, the rotor corresponding with the stator is installed to the cylinder body internal rotation, the perisporium of rotor is equipped with a plurality of piston holes, install piston assembly in the piston hole, be equipped with the fluid passageway in the cylinder body, the fluid passageway is linked together with the piston hole, piston assembly acts on the stator through hydraulic oil and rotates for the stator with the drive rotor, be equipped with the reset structure of drive piston assembly towards keeping away from stator one side motion in the piston hole, the cylinder body has the motor for the other end fixed mounting of rotor, the output of motor is connected with the connecting axle that stretches into in the cylinder body, the rotor is connected in the periphery of connecting axle and with the coaxial setting of connecting axle.
Further, the piston assembly comprises a piston accommodated in the piston hole and a ball partially accommodated in the piston, and the piston is wrapped at the other end, opposite to the stator, of the ball.
Further, the reset structure includes fixed retaining ring, activity retaining ring and elastic component, fixed retaining ring fixed mounting is in the position that the rotor corresponds the piston hole, and this fixed retaining ring is located the spheroid and for the other end of piston, the spheroid periphery is located to the activity retaining ring cover, butt elastic component between fixed retaining ring and the activity retaining ring, the activity retaining ring drives the spheroid towards breaking away from stator one side motion under the elastic component effect.
Furthermore, the position of the fixed retainer ring and the position of the movable retainer ring corresponding to the elastic part are provided with limit grooves.
Further, the cylinder body includes back lid, stator and protecgulum as an organic whole through the fastener connection, the stator is located between rear end and the protecgulum, cover fixed connection oil distribution body after, be formed with the clearance that supplies oil distribution body to stretch into between rotor and the connecting axle, oil distribution body inner circle installs the bearing that is used for supporting the connecting axle, oil distribution body's outer lane and rotor clearance fit.
Furthermore, one end of the oil distribution body, which is opposite to the rear cover, is fixedly connected with an oil distribution plate, and the oil distribution plate is provided with a liquid inlet and a liquid outlet which are communicated with the oil channel.
Furthermore, an oil seal I is arranged between the other end, far away from the oil distribution connection plate, of the oil distribution body and the rotor.
Further, an oil seal II is arranged between the front cover and the rotor, and a dustproof structure located on the outer side of the oil seal II is arranged between the front cover and the rotor.
Furthermore, a connecting plate is arranged between the stator and the front cover, and the connecting plate and the rear cover are used for axially limiting the rotor.
Further, the other end of the connecting shaft relative to the motor is connected with the rotor through a key.
In conclusion, the invention has the following beneficial effects:
the double-drive motor integrates the low-power motor and the hydraulic motor capable of being used as a pump working condition, the problem that different unit elements and control systems are needed under different working conditions is solved, meanwhile, the problem that the power of the single hydraulic motor is surplus and wasted under the working condition of light load is solved, the double-drive motor realizes energy conservation and emission reduction through stepless switching of heavy-load hydraulic drive and light-load motor drive, the hydraulic motor can be used for a long time under the pump working condition through internal structural design, and the reliability and durability of equipment are improved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view of the present invention at a.
Fig. 3 is a schematic view of the structure of the piston assembly of the present invention acting on the stator.
Fig. 4 is a schematic view of the piston assembly of the present invention disengaged from the stator.
FIG. 5 is a hydraulic system diagram of the present invention.
In the figure: 1. a cylinder body; 11. an oil passage; 12. a rear cover; 13. a stator; 14. a front cover; 141. oil seal II; 142. a dust-proof structure; 15. an oil distribution body; 151. a bearing; 152. oil seal I; 16. an oil distribution connecting plate; 161. a liquid inlet; 162. a liquid outlet; 17. a connecting plate; 2. a rotor; 21. a piston bore; 22. a piston assembly; 221. a piston; 222. a sphere; 223. fixing a retainer ring; 224. a movable retainer ring; 225. an elastic member; 226. a limiting groove; 3. a motor; 31. a connecting shaft; 4. an oil tank; 41. a hydraulic pump; 42. a pressure gauge; 43. an overflow valve; 44. an integrated diverter valve; 45. a sequence valve; 46. an electro-hydraulic dual drive motor; 47. a button.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-4, an electro-hydraulic dual-drive motor includes a cylinder body 1, the cylinder body 1 includes a stator 13, a rotor 2 corresponding to the stator 13 is rotatably installed in the cylinder body 1, a plurality of piston holes 21 are formed in a peripheral wall of the rotor 2, a piston assembly 22 is installed in each piston hole 21, an oil passage 11 is formed in the cylinder body 1, and the oil passage 11 is communicated with the piston holes 21.
Piston assembly 22 acts on stator 13 through hydraulic oil and rotates for stator 13 with drive rotor 2, specifically, when letting in hydraulic oil in fluid passageway 11, piston assembly 22's spheroid 222 contacts with the inner curve of stator 13 under the hydraulic oil effect (this inner curve's shape is prior art, and is the same with the inner curve of conventional pneumatic cylinder promptly), produces radial rotatory power, drive rotor 2 output torque, be equipped with the reset structure who drives piston assembly 22 towards keeping away from stator 13 one side motion in the piston hole 21, cylinder body 1 has motor 3 for the other end fixed mounting of rotor 2, motor 3's output is connected with connecting axle 31, rotor 2 connects in connecting axle 31 the periphery and with the coaxial setting of connecting axle 31, and the double-drive motor adopts motor 3 and the coaxial output of hydraulic motor promptly.
The output of motor 3 is connected through the cooperation of two parallel keys with connecting axle 31, connecting axle 31 passes through the key-type connection for motor 3's the other end and rotor 2, specifically, connecting axle 31 adopts splined connection with rotor 2, and this structure setting has guaranteed motor 3 and the coaxial output of hydraulic motor, improves two motor steady output that drive for motor 3 accessible connecting axle 31 drive rotor 2 rotates under the light load operating mode, with drive load.
The piston assembly 22 includes a piston 221 received in the piston hole 21 and a ball 222 partially received in the piston 221, the ball 222 is made of a steel ball, and the piston 221 is wrapped at the other end of the ball 222 opposite to the stator 13.
The reset structure includes a fixed retainer 223, a movable retainer 224 and an elastic member 225, the fixed retainer 223 is fixedly installed at a position of the rotor 2 corresponding to the piston hole 21, the fixed retainer 223 is located at the other end of the sphere 222 opposite to the piston 221, the fixed retainer 223 is an elastic retainer and plays a role of fixing the elastic member 225, the movable retainer 224 is a spherical retainer and is sleeved on the periphery of the sphere 222, the elastic member 225 is abutted between the fixed retainer 223 and the movable retainer 224, the movable retainer 224 drives the sphere 222 to move towards the side away from the stator 13 under the action of the elastic member 225, the elastic member 225 is preferably a spring, and other elastic members such as a spring plate can be selected certainly.
The piston 221 has an automatic telescopic function under the action of a reset structure, when hydraulic oil is introduced, the piston 221 extends outwards, and the hydraulic motor outputs torque; the hydraulic oil is cut off, the piston 221 retracts, the piston assembly 22 acts on the stator 13 through the hydraulic oil pressure, radial rotating force is generated, and the rotor 2 is driven to output torque.
The fixed retainer 223 and the movable retainer 224 are provided with a retaining groove 226 corresponding to the position of the elastic member 225, and the retaining groove 226 is used for placing the elastic member 225 to be deflected.
The cylinder body 1 includes and connects back lid 12, stator 13 and protecgulum 14 as an organic whole through the fastener, stator 13 is located between rear end and the protecgulum 14, fixed connection joins in marriage oily body 15 on the back lid 12, be formed with the clearance that supplies to join in marriage oily body 15 and stretch into between rotor 2 and the connecting axle 31, join in marriage oily body 15 inner circle and install bearing 151 who is used for supporting connecting axle 31, join in marriage oily body 15's outer lane and rotor 2 clearance fit, guarantee hydraulic motor's high volumetric efficiency and mechanical efficiency, join in marriage and be equipped with oil blanket I152 between the other end of oily body 15 far away from joining in marriage oily fishplate 16 and rotor 2, this structural design has guaranteed the stability of output, and the problem that hydraulic motor can not bear radial force has been solved to bearing 151 simultaneously.
Be equipped with connecting plate 17 between stator 13 and the protecgulum 14, connecting plate 17 and back lid 12 are used for carrying out axial spacing to rotor 2, have realized the arbitrary combination of mounting height through addding connecting plate 17, back lid 12, stator 13, connecting plate 17 and protecgulum 14 pass through fastener fixed connection, constitute the airtight cavity of biax motor.
The oil distribution body 15 is fixedly connected with an oil distribution connecting plate 16 relative to one end of the rear cover 12, the oil distribution connecting plate 16 is provided with a liquid inlet 161 and a liquid outlet 162 which are communicated with the oil channel 11, the liquid inlet 161 and the liquid outlet 162 are perpendicular to the connecting shaft 31, the problem of complex oil circuit arrangement is solved, and the oil distribution connecting plate 16, the oil distribution body 15 and the rear cover 12 form an oil distribution system of the double-shaft motor.
When the hydraulic oil is introduced into the liquid inlet 161, the hydraulic oil acts on the bottom of the piston 221, and the piston 221 overcomes the elastic force of the elastic member 225 under the action of the hydraulic oil to drive the ball 222 to push the (radial) stator 13, so as to generate a tangential force to drive the rotor to rotate and output a torque; when the liquid inlet 161 is disconnected from the hydraulic oil, the elastic member 225 acts on the end surface of the movable retainer ring 224, the movable retainer ring 224 pushes the ball 222 to act on the piston 221, so that the ball 222 and the piston 221 retract to the bottom, and finally the balls 222 of all the piston assemblies 22 are separated from the stator 13, and at the moment, the dual-shaft motor is in a free wheel working condition (pump working condition), so that the problem of noise generated when the ball 222 strikes the stator 13 due to centrifugal force generated by rotation under the working condition of a common motor pump can be solved.
Be equipped with oil blanket II 141 between protecgulum 14 and the rotor 2, set up oil blanket II 141 and can prevent that hydraulic oil from leaking, be equipped with the dustproof construction 142 that is located the II 141 outsides of oil blanket between protecgulum 14 and the rotor 2, this dustproof construction 142 is the dust ring, and outside dust, debris entering motor inside can be solved well to this setting.
Fig. 5 is a diagram of a hydraulic system according to the present invention, an inlet of a hydraulic pump 41 is connected to an oil tank 4, an outlet of the hydraulic pump 41 is connected to hydraulic elements such as a pressure gauge 42 and an overflow valve 43, and a main oil path is divided into a large-load oil path and a small-load oil path by an integrated flow dividing valve 44.
And the small-load oil circuit is provided with a sequence valve 45, an electro-hydraulic dual-drive motor 46, a button 47 and other elements. The button 47 is a motor rotating button, the sequence valve 45 is used for opening and closing a small-load oil circuit, when the sequence valve 45 is opened, hydraulic oil is supplied to a hydraulic motor part in the electro-hydraulic dual-drive motor 46, the button 47 is closed, the motor 3 does not work, and at the moment, the electro-hydraulic dual-drive motor 46 drives a heavy load; when the sequence valve 45 is closed, the small-load hydraulic oil circuit is closed, the hydraulic motor does not work, the button 47 is opened, the motor 3 starts to work, the hydraulic motor is in a free wheel (under the working condition of the pump) and passively rotates, and at the moment, the electro-hydraulic double-drive motor 46 drives light load. In which case all the hydraulic oil is supplied to the high-load oil passage under the action of the integrated flow dividing valve 44 in the case where the low-load hydraulic oil passage is closed.
In conclusion, the invention has the following beneficial effects:
the double-drive motor integrates the low-power motor and the hydraulic motor capable of being used as a pump working condition, the problem that different unit elements and control systems are needed under different working conditions is solved, meanwhile, the problem that the power of the single hydraulic motor is surplus and wasted under the working condition of light load is solved, the double-drive motor realizes energy conservation and emission reduction through stepless switching of heavy-load hydraulic drive and light-load motor drive, the hydraulic motor can be used for a long time under the pump working condition through internal structural design, and the reliability and durability of equipment are improved.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides an electricity liquid dual drive motor, includes cylinder body (1), cylinder body (1) is including stator (13), rotor (2) corresponding with stator (13) are installed to cylinder body (1) internal rotation, the perisporium of rotor (2) is equipped with a plurality of piston holes (21), install piston assembly (22), its characterized in that in piston hole (21): be equipped with fluid passageway (11) in cylinder body (1), fluid passageway (11) are linked together with piston hole (21), piston assembly (22) act on stator (13) through hydraulic oil and rotate for stator (13) in order to drive rotor (2), be equipped with drive piston assembly (22) in piston hole (21) towards keeping away from the structure that resets of stator (13) one side motion, cylinder body (1) has motor (3) for the other end fixed mounting of rotor (2), the output of motor (3) is connected with connecting axle (31) of stretching into in cylinder body (1), rotor (2) are connected in the periphery of connecting axle (31) and with connecting axle (31) coaxial setting.
2. An electro-hydraulic dual drive motor according to claim 1, wherein: the piston assembly (22) comprises a piston (221) accommodated in the piston hole (21) and a ball (222) partially accommodated in the piston (221), and the piston (221) covers the other end, opposite to the stator (13), of the ball (222).
3. An electro-hydraulic dual drive motor according to claim 2, wherein: the resetting structure comprises a fixed retainer ring (223), a movable retainer ring (224) and an elastic piece (225), wherein the fixed retainer ring (223) is fixedly arranged at the position, corresponding to the piston hole (21), of the rotor (2), the fixed retainer ring (223) is located at the other end, opposite to the piston (221), of the sphere (222), the periphery of the sphere (222) is sleeved with the movable retainer ring (224), the elastic piece (225) is abutted between the fixed retainer ring (223) and the movable retainer ring (224), and the movable retainer ring (224) drives the sphere (222) to move towards one side away from the stator (13) under the action of the elastic piece (225).
4. An electro-hydraulic dual drive motor according to claim 3, wherein: and the fixed retainer ring (223) and the movable retainer ring (224) are provided with limit grooves (226) corresponding to the elastic part (225).
5. An electro-hydraulic dual drive motor according to claim 1, wherein: cylinder body (1) is including connecting back lid (12), stator (13) and protecgulum (14) as an organic whole through the fastener, stator (13) are located between rear end and protecgulum (14), fixed connection joins in marriage oily body (15) on back lid (12), be formed with the clearance that supplies to join in marriage oily body (15) and stretch into between rotor (2) and connecting axle (31), join in marriage oily body (15) inner circle and install bearing (151) that are used for supporting connecting axle (31), the outer lane and rotor (2) clearance fit of joining in marriage oily body (15).
6. An electro-hydraulic dual drive motor according to claim 5, wherein: the oil distribution body (15) is fixedly connected with an oil distribution plate (16) relative to one end of the rear cover (12), and the oil distribution plate (16) is provided with a liquid inlet (161) and a liquid outlet (162) communicated with the oil channel (11).
7. An electro-hydraulic dual drive motor according to claim 5, wherein: an oil seal I (152) is arranged between the other end of the oil distribution body (15) far away from the oil distribution connection plate (16) and the rotor (2).
8. An electro-hydraulic dual drive motor according to claim 5, wherein: an oil seal II (141) is arranged between the front cover (14) and the rotor (2), and a dustproof structure (142) located on the outer side of the oil seal II (141) is arranged between the front cover (14) and the rotor (2).
9. An electro-hydraulic dual drive motor according to claim 5, wherein: a connecting plate (17) is arranged between the stator (13) and the front cover (14), and the connecting plate (17) and the rear cover (12) are used for axially limiting the rotor (2).
10. An electro-hydraulic dual drive motor according to claim 1, wherein: the other end of the connecting shaft (31) opposite to the motor (3) is connected with the rotor (2) through a key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299907.9A CN113719402B (en) | 2021-11-04 | 2021-11-04 | Electro-hydraulic dual-drive motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299907.9A CN113719402B (en) | 2021-11-04 | 2021-11-04 | Electro-hydraulic dual-drive motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113719402A true CN113719402A (en) | 2021-11-30 |
| CN113719402B CN113719402B (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111299907.9A Active CN113719402B (en) | 2021-11-04 | 2021-11-04 | Electro-hydraulic dual-drive motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN113719402B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3750533A (en) * | 1968-07-27 | 1973-08-07 | Hydraulic Drive Ag | Hydraulic pumps or motors |
| JPS4872702A (en) * | 1971-12-23 | 1973-10-01 | ||
| US3961558A (en) * | 1973-11-20 | 1976-06-08 | Alexandr Viktorovich Dokukin | Positive-displacement hydraulic motor |
| US4018139A (en) * | 1974-08-08 | 1977-04-19 | Societe Anonyme Francaise Du Ferodo | Rotary hydraulic machine |
| GB2239907A (en) * | 1989-11-29 | 1991-07-17 | Poclain Hydraulics Sa | Pressurised fluid mechanism and a disc brake coupled thereto |
| EP0601916A1 (en) * | 1992-12-11 | 1994-06-15 | Poclain Hydraulics | Hydraulic motor mit for driving a drilling tool |
| JP2002147343A (en) * | 2000-11-13 | 2002-05-22 | Kanzaki Kokyukoki Mfg Co Ltd | Axial piston machine |
| CN201902286U (en) * | 2010-12-21 | 2011-07-20 | 宁波市恒通液压科技有限公司 | Inner curve multiple-acting radial plunger type hydraulic centrifugal motor |
| CN202091109U (en) * | 2011-05-24 | 2011-12-28 | 宁波市恒通液压科技有限公司 | Plunger type hydraulic motor capable of automatically switching driving output and driven states |
| CN202468151U (en) * | 2012-03-12 | 2012-10-03 | 宁波市恒通液压科技有限公司 | Low-speed large-torque radial plunger type hydraulic motor |
| CN104806441A (en) * | 2015-04-13 | 2015-07-29 | 武汉海力威机电科技有限公司 | Inner closed-loop servo hydraulic motor and control method thereof |
| CN110017255A (en) * | 2019-04-25 | 2019-07-16 | 南昌大学 | A kind of novel external curve plunger pump |
-
2021
- 2021-11-04 CN CN202111299907.9A patent/CN113719402B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3750533A (en) * | 1968-07-27 | 1973-08-07 | Hydraulic Drive Ag | Hydraulic pumps or motors |
| JPS4872702A (en) * | 1971-12-23 | 1973-10-01 | ||
| US3961558A (en) * | 1973-11-20 | 1976-06-08 | Alexandr Viktorovich Dokukin | Positive-displacement hydraulic motor |
| US4018139A (en) * | 1974-08-08 | 1977-04-19 | Societe Anonyme Francaise Du Ferodo | Rotary hydraulic machine |
| GB2239907A (en) * | 1989-11-29 | 1991-07-17 | Poclain Hydraulics Sa | Pressurised fluid mechanism and a disc brake coupled thereto |
| EP0601916A1 (en) * | 1992-12-11 | 1994-06-15 | Poclain Hydraulics | Hydraulic motor mit for driving a drilling tool |
| JP2002147343A (en) * | 2000-11-13 | 2002-05-22 | Kanzaki Kokyukoki Mfg Co Ltd | Axial piston machine |
| CN201902286U (en) * | 2010-12-21 | 2011-07-20 | 宁波市恒通液压科技有限公司 | Inner curve multiple-acting radial plunger type hydraulic centrifugal motor |
| CN202091109U (en) * | 2011-05-24 | 2011-12-28 | 宁波市恒通液压科技有限公司 | Plunger type hydraulic motor capable of automatically switching driving output and driven states |
| CN202468151U (en) * | 2012-03-12 | 2012-10-03 | 宁波市恒通液压科技有限公司 | Low-speed large-torque radial plunger type hydraulic motor |
| CN104806441A (en) * | 2015-04-13 | 2015-07-29 | 武汉海力威机电科技有限公司 | Inner closed-loop servo hydraulic motor and control method thereof |
| CN110017255A (en) * | 2019-04-25 | 2019-07-16 | 南昌大学 | A kind of novel external curve plunger pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113719402B (en) | 2022-04-01 |
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