CN214944777U - A two-dimensional piston motor pump with screw oil distribution groove - Google Patents

Abstract

A two-dimensional plunger motor pump with a screw oil distribution groove includes a motor pump casing, a stator and a rotor are arranged in the motor pump casing, the plunger pump body includes a pump core, and the pump core includes a plunger sleeve and a column The plunger shaft is provided with an oil inlet channel and an oil discharge channel on the plunger sleeve, and the plunger of the plunger shaft can be arranged in the plunger sleeve to reciprocate axially along the cylinder body and separate the cylinder body into Left chamber and right chamber, the outer surface of the plunger of the plunger shaft is provided with a spiral oil distribution groove, when the plunger moves axially from the leftmost end to the rightmost end, the oil inlet passage passes through the corresponding spiral oil distribution groove It communicates with the right chamber, and the oil discharge passage communicates with the left chamber through the corresponding spiral oil distribution groove. When the plunger moves axially from the rightmost end to the leftmost end, the oil inlet passage passes through the corresponding spiral oil distribution groove. Connected with the left chamber, the oil discharge channel is communicated with the right chamber through a corresponding spiral oil distribution groove; the spiral distribution groove is composed of a spiral part and a rectangular part.

Description

Two-dimensional plunger motor pump of spiral oil distribution groove

Technical Field

The utility model belongs to the technical field of the motor pump, concretely relates to two-dimensional plunger motor pump of spiral oil distribution groove.

Background

The traditional hydraulic power device is generally in a three-section structure consisting of a motor, a coupler and a hydraulic pump, and the axial size of the hydraulic power device is too large due to the structural form that the three devices are all arranged on the same axis. The motor pump formed by integrating the three devices has the advantages of high body power, small structure and the like as a new generation hydraulic power device. The plunger shaft and the plunger sleeve in the two-dimensional plunger electromechanical pump are main pressure generating components, and the inflow and outflow of hydraulic oil are guided by an oil distribution groove on the plunger shaft and an upper side groove of the plunger sleeve, so that the matching relationship of the two influences the efficiency of the hydraulic device. For the rectangular oil distribution groove, as the motion of the plunger shaft is a composite motion formed by combining reciprocating linear motion and rotary motion, the contact ratio between the oil distribution groove on the plunger shaft and the upper side groove of the plunger sleeve is lower at the beginning part of the oil inlet stage and the oil outlet stage, so that the efficiency of the mechanism is reduced.

Disclosure of Invention

For solving the above-mentioned problem that prior art exists, the utility model provides a join in marriage overlap ratio height, the efficient spiral of mechanism between oil groove and the plunger cover upper side groove and join in marriage two-dimentional plunger motor pump of oil groove.

The utility model adopts the technical proposal that:

the utility model provides a two-dimentional plunger motor pump of oil groove is joined in marriage to spiral, includes the motor pump shell, be equipped with stator and rotor in the motor pump shell, the both ends of motor pump shell are provided with shell left end lid and shell right-hand member lid respectively, the both ends of rotor respectively with corresponding shell end lid rotatable coupling, install the plunger pump body in the rotor, the axial lead of the plunger pump body and the axial lead collineation of motor pump shell, its characterized in that: the plunger pump body consists of a pump core and a transmission mechanism;

the pump core comprises a plunger sleeve and a plunger shaft, a plunger sleeve shell is fixedly arranged outside the plunger sleeve, a cylinder body is formed in the plunger sleeve, an oil inlet channel and an oil discharge channel are arranged on the plunger sleeve, a plunger of the plunger shaft can be arranged in the plunger sleeve in a reciprocating manner along the cylinder body in an axial straight line manner and divides the cylinder body into a left chamber and a right chamber, a spiral oil distribution groove is arranged on the outer surface of the plunger shaft, when the plunger axially moves from the leftmost end to the rightmost end, the oil inlet channel is communicated with the right chamber through the corresponding spiral oil distribution groove, the oil discharge channel is communicated with the left chamber through the corresponding spiral oil distribution groove, when the plunger axially moves from the rightmost end to the leftmost end, the oil inlet channel is communicated with the left chamber through the corresponding spiral oil distribution groove, and the oil discharge channel is communicated with the right chamber through the corresponding spiral oil distribution groove; the spiral diversion trench consists of a spiral part and a rectangular part;

the plunger shaft outside the cylinder body is provided with a transmission mechanism and is connected with a rotor which drives the plunger shaft to rotate relative to the plunger sleeve; when the plunger shaft rotates, the transmission mechanism can enable the plunger shaft to do axial reciprocating motion.

Further, the transmission mechanism comprises a cylindrical cam and a second roller wheel, the cylindrical cam is fixedly connected with the plunger shaft, a curved surface raceway capable of enabling the cylindrical cam to perform equal acceleration and equal deceleration is arranged on the outer surface of the cylindrical cam, a cam shell is arranged outside the cylindrical cam, the cam shell is fixedly connected with the plunger sleeve shell, the second roller wheels are symmetrically fixed on the cam shell, and the second roller wheels can move along the curved surface raceway, are arranged in the corresponding curved surface raceway and are matched with the curved surface raceway to enable the plunger shaft to perform axial motion.

Further, the fixed axle is radially worn to be equipped with by the right-hand member of plunger axle, the both ends of fixed axle all are equipped with first gyro wheel, the right-hand member inboard of rotor is provided with changes the cover, the position that corresponds first gyro wheel on changeing the cover has seted up the axial slide, first gyro wheel sets up in the axial slide and can follow the axial slide and roll.

Furthermore, an oil inlet and an oil outlet are formed in the left end face of the plunger sleeve, a first semi-annular groove and a second semi-annular groove are formed in the outer surface of the plunger sleeve, the oil inlet is communicated with the first semi-annular groove to form an oil inlet channel, and the oil outlet is communicated with the second semi-annular groove to form an oil discharge channel.

Further, the spiral oil distribution groove includes the left side distribution groove that two symmetries set up and the right side distribution groove that two symmetries set up, the opposite direction of left side distribution groove and right side distribution groove and the notch 90 settings that stagger, the position that the cylinder body corresponds with left side distribution groove and right side distribution groove is equipped with oil absorption window and oil extraction window, oil absorption window and first semi-annular groove intercommunication, oil extraction window and second semi-annular groove intercommunication. Left side distributing groove and right distributing groove on the plunger overlap with oil absorption window, oil extraction window on the cylinder body respectively, and the cavity oil absorption of volume grow gradually, the cavity oil extraction that the volume reduces gradually.

Further, the second roller is fixedly connected with the cam shell through a second roller frame, a second angular contact bearing is arranged between the second roller and the second roller frame, the second angular contact bearing and a shaft shoulder in the second roller realize axial positioning through a second axial retainer ring, and a fourth spring gasket is arranged between the second roller frame and the cam shell.

Furthermore, the cylindrical cam is mounted on the plunger shaft through key connection, and axial and circumferential positioning is realized through a shaft shoulder on the plunger shaft and the first axial retainer ring.

Furthermore, the plunger sleeve shell is of a cylindrical structure with an opening at the left end and a closed right end, and the left end of the plunger sleeve shell is fixedly connected with the left end cover of the shell.

Further, the stator is formed by winding a stator winding on a stator core, and the permanent magnets are uniformly distributed on the rotor and are respectively and rotationally connected with the left end cover and the right end cover of the shell through first angular contact ball bearings.

And furthermore, sealing rings are arranged between the plunger shaft and the left end of the plunger sleeve and between the plunger shaft and the right end of the plunger sleeve shell.

The utility model has the advantages that: the overlap ratio between the oil distribution groove and the upper side groove of the plunger sleeve is high, and the mechanism efficiency is high.

Drawings

Fig. 1 is a sectional view of the structure of the present invention.

Fig. 2 is a schematic view of a plunger body.

Fig. 3 is a sectional view of the plunger pump body structure.

Fig. 4 is a schematic view of the structure in the direction of a-a in fig. 2.

Fig. 5 is a schematic view of a cam roller assembly.

Fig. 6 is a schematic view of the structure of the plunger barrel.

Fig. 7 is a diagram of a set of plunger oil distribution grooves and outlet side grooves.

FIG. 8 is a view of another set of plunger oil distribution grooves and outlet side grooves.

Description of reference numerals: 1. a housing left end cap; 2. a motor pump housing; 3. a stator winding; 4. a stator core; 5. a gasket; 6. a housing right end cap; 7. a first angular contact ball bearing; 8. rotating the sleeve; 9. a first roller; 10. a rotor; 11. a first hexagon socket head cap screw; 12. a first spring washer; 13. a plunger sleeve housing; 14. a second hexagon socket screw; 15. a second spring washer; 16. a cylindrical cam; 17. a first cam housing; 18. a first axial retainer ring; 19. a key; 20. a second cam housing; 21. a first seal ring; 22. a third hexagon socket screw; 23. a third spring washer; 24. a plunger sleeve; 25. a second seal ring; 26. a plunger shaft; 27. a second roller; 28. a second axial retainer ring; 29. a second roller frame; 30. a second angular contact ball bearing; 31. a fourth spring washer.

Detailed Description

The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-8, the embodiment provides a two-dimensional plunger motor pump of a spiral oil distribution groove, which includes a motor pump housing 2, two ends of the motor pump housing 2 are respectively fixedly connected to a housing left end cover 1 and a housing right end cover 6 through screws, and gaskets 5 are respectively disposed between the motor pump housing 2 and the housing left end cover 1 and between the motor pump housing 2 and the housing right end cover 6. And a stator and a rotor are arranged in the motor pump shell 2, and the stator is formed by winding a stator winding 3 on a stator iron core 4 and is arranged on the motor pump shell. Permanent magnets are uniformly distributed on the rotor 10, and the rotor 10 is rotatably supported between the shell end covers through a first angular contact ball bearing 7, so that central shafts of the stator and the rotor are kept collinear. A plunger pump body is installed in the rotor 10, or a shaft sleeve is arranged in the rotor, and a plunger pump body is installed in the shaft sleeve.

The plunger pump body of this embodiment comprises pump core and drive mechanism, the pump core includes plunger barrel 24 and plunger shaft 26, plunger barrel 24 external fixation is provided with plunger barrel shell 13 and forms the cylinder body in plunger barrel 24, plunger barrel shell 13 is left end opening, right-hand member confined cylindric structure, plunger barrel shell 13's right-hand member and plunger barrel 24 pass through third hexagon socket head cap screw 22 and third spring gasket 23 fixed connection, realize plunger barrel 24's fixed. The left end of the plunger bushing shell 13 is fixedly connected with the shell left end cover 1 through a first hexagon socket head cap bolt 11 and a first spring gasket 12, and the left side of the two-dimensional plunger pump body is fixed. The right end of the plunger shaft 26 is connected with the rotor 10 which drives the plunger shaft to rotate relative to the plunger sleeve 24, the two-dimensional plunger hydraulic pump is connected with the rotor 10 through the first idler wheel 9 and the rotating sleeve 8, the fixation of the right side of the two-position plunger pump is achieved, the two-position plunger hydraulic pump and the two-position plunger hydraulic pump guarantee the fixation of the two-dimensional plunger hydraulic pump together, and the axial lead of the two-dimensional plunger pump is respectively on the same straight line with the axial leads of the motor pump shell 2 and the rotor 10. Specifically, the fixed axle is radially worn to be equipped with by the right-hand member of plunger shaft 26, the both ends of fixed axle all are equipped with first gyro wheel 9, the right-hand member inboard of rotor 10 is provided with changes cover 8, the position that corresponds first gyro wheel 9 on changeing cover 8 has seted up the axial slide, first gyro wheel 9 sets up in the axial slide and can follow the axial slide and roll.

In this embodiment, the plunger sleeve 24 is provided with an oil inlet channel and an oil discharge channel, specifically, the left end surface of the plunger sleeve is provided with an oil inlet and an oil outlet, the outer surface of the plunger sleeve 24 is provided with a first half annular groove and a second half annular groove, the oil inlet is communicated with the first half annular groove to form the oil inlet channel, and the oil outlet is communicated with the second half annular groove to form the oil discharge channel.

In this embodiment, the plunger of the plunger shaft 26 is disposed in the plunger sleeve 24 and partitions the cylinder into a left chamber and a right chamber in a manner of reciprocating axially along the cylinder, specifically, the left end of the plunger and the cylinder enclose a left chamber, the right end of the plunger and the cylinder enclose a right chamber, the volumes of the left chamber and the right chamber change along with the reciprocating motion of the plunger, and when the plunger moves axially from the leftmost end to the rightmost end, the volume of the left chamber gradually increases, and the volume of the right chamber gradually decreases; conversely, as the plunger moves from the rightmost end to the leftmost end, the right chamber volume becomes progressively larger and the left chamber volume becomes progressively smaller. And a second sealing ring 25 is arranged between the plunger shaft 26 and the left end of the plunger sleeve 24, and a first sealing ring 21 is arranged between the plunger shaft 26 and the right end of the plunger sleeve shell 13, so that the sealing property of the cylinder body is ensured, and oil leakage is prevented.

In this embodiment, the plunger outer surface of the plunger shaft 26 is provided with four spiral oil distribution grooves: a, b, c, d, it is specific, spiral oil distribution groove includes the left side distributing groove and the right distributing groove of two symmetry settings that two symmetries set up, the opposite direction and the notch of left side distributing groove and right distributing groove stagger 90 setting. Namely, the phase difference of the same-direction flow distribution grooves is 180 degrees, and the phase difference of every two flow distribution grooves is 90 degrees. The oil suction window and the oil discharge window are arranged at the positions of the cylinder body corresponding to the left flow distribution groove and the right flow distribution groove, the oil suction window is communicated with the first semi-annular groove, and the oil discharge window is communicated with the second semi-annular groove. Specifically, each semi-annular groove is provided with two side grooves, and the phase difference of the side grooves is 180 degrees; the four side grooves have a phase difference of 90 degrees between every two side grooves, and the phase difference corresponds to the spiral oil distribution grooves on the plunger shaft 26 respectively. The spiral oil distribution groove consists of a spiral part and a rectangular part.

In the embodiment, a transmission mechanism is arranged on the plunger shaft 26 outside the cylinder body; when the plunger shaft 26 rotates, the transmission mechanism can enable the plunger shaft 26 to do axial reciprocating motion; the transmission mechanism comprises a cylindrical cam 16 and a second roller 27, the cylindrical cam 16 is fixedly connected with a plunger shaft 26, a curved raceway capable of enabling the cylindrical cam to perform equal acceleration and equal deceleration is arranged on the outer surface of the cylindrical cam 16, a cam shell is arranged outside the cylindrical cam 16 and fixedly connected with a plunger sleeve shell 13, the second roller 27 is symmetrically fixed on the cam shell, and the cam shell is formed by connecting a first cam shell 17 and a second cam shell 20; the second roller 27 is movably arranged in the corresponding curved raceway along the curved raceway and cooperates with the curved raceway to make the plunger shaft 26 move axially. Specifically, the second roller 27 is mounted on the second roller frame 29 through a second angular contact ball bearing 30, and the second roller frame 29 is mounted on the first cam housing 17 and the second cam housing 20 through a fourth spring washer 31, respectively. The second angular ball bearing 30 is axially positioned by the second axial locking ring 28 and a shoulder inside the second roller 27. The first cam housing 17 and the second cam housing 20 are connected by set screws and are connected to the plunger barrel housing 13 by a second hexagon socket head cap screw 14 and a second spring washer 15. The cylindrical cam 16 is mounted on the plunger shaft 26 by a key 19 connection and is axially and circumferentially positioned by a shoulder on the plunger shaft 26 with the first axial stop 18.

After alternating current is conducted on the motor pump stator, a rotating magnetic field generated by the stator interacts with the permanent magnet on the rotor 10, the generated electromagnetic force pushes the rotor 10 to rotate relative to the motor pump stator, and the rotating sleeve 8 and the rotor 10 rotate at the same angular speed. The rotating sleeve 8 is provided with a special axial slideway, so that the first roller 9 can roll axially and drive the plunger shaft 26 and the cylindrical cam 16 to rotate at the same angular speed. Since the second roller carrier 29 is stationary, the particular race on the cylindrical cam 16 moves relative to the second roller 27, causing the plunger shaft 26 to reciprocate axially while rotating.

When the plunger moves axially from the leftmost end to the rightmost end, the oil inlet channel is communicated with the right chamber through the corresponding spiral oil distribution groove, the oil discharge channel is communicated with the left chamber through the corresponding spiral oil distribution groove, when the plunger moves axially from the rightmost end to the leftmost end, the oil inlet channel is communicated with the left chamber through the corresponding spiral oil distribution groove, and the oil discharge channel is communicated with the right chamber through the corresponding spiral oil distribution groove.

For example, when hydraulic oil flows in from the oil inlet of the plunger sleeve 24, the hydraulic oil flows to the spiral oil distribution grooves a and c on the plunger shaft 26 through the side grooves o, m on the first semi-annular groove corresponding to the oil inlet, and flows into the right chamber through the spiral oil distribution grooves. The plunger shaft 26 moves leftwards, so that the volume of the right chamber is increased, negative pressure is generated, and hydraulic oil is sucked; meanwhile, the volume of the left chamber is continuously reduced, the pressure is continuously increased, hydraulic oil in the chamber is discharged outwards through the spiral oil distribution grooves b and d, and the discharged hydraulic oil flows out of the oil outlet of the plunger sleeve 24 through the guide of the side grooves q and n of the second half annular groove corresponding to the oil outlet.

When the right chamber is about to perform oil absorption process, the side groove communicated with the oil absorption window is firstly superposed with the tops of the spiral parts on the spiral oil distribution grooves a and c; when the plunger shaft 26 rotates clockwise for each degree of phase, the plunger shaft 26 moves to the left for a certain distance, the combined motion of the plunger shaft and the plunger shaft is spiral motion, the central lines of the spiral oil distribution grooves a and c are matched with the molded line of the spiral motion of the plunger shaft, and the contact ratio of the side grooves and the oil distribution grooves is ensured; and when the oil suction process of the right chamber is about to end, the side groove just corresponds to the tail end of the spiral part and the top end of the rectangular part on the oil distribution groove. The rectangular portion of the oil distribution groove is used for guiding hydraulic oil to the chamber. When the oil drainage process of the right chamber is carried out, the right chamber is firstly overlapped with the tops of the spiral oil distribution groove b and the spiral part d, the plunger shaft moves leftwards while rotating through a certain phase, the molded line of the resultant motion on the plunger shaft is matched with the spiral oil distribution central line, the overlap ratio between the side groove and the oil distribution groove is ensured, and the side groove just corresponds to the tail end of the spiral part on the oil distribution groove and the top end of the rectangular part until the oil drainage process of the right chamber is finished.

Under the combined action of the motor and the cylindrical cam 16, the plunger shaft 26 and the rotor do reciprocating radial motion while rotating at the same angular speed, the plunger shaft 26 does spiral motion, and the spiral oil distribution groove ensures the contact ratio of the side groove and the oil distribution groove when the oil inlet stage is finished and the oil outlet stage is started.

After the plunger shaft rotates 180 degrees of phase, the leftward movement is changed into the rightward movement, at the moment, the volume of the left chamber is increased, the volume of the right chamber is reduced, and the plunger shaft 26 rotates to change the phase of the oil distribution groove, so that the oil distribution groove corresponds to the side groove, and the oil inlet and the oil outlet are guaranteed not to be disordered. Therefore, when the motor rotates for one circle, the two-dimensional plunger pump discharges oil and absorbs oil twice. Under the continuous rotation of the motor, the continuous oil suction and oil discharge of the two-dimensional plunger pump are realized, and the required high-pressure hydraulic oil is generated.

Claims (10)

1. The utility model provides a two-dimentional plunger motor pump of oil groove is joined in marriage to spiral, includes the motor pump shell, be equipped with stator and rotor in the motor pump shell, the both ends of motor pump shell are provided with shell left end lid and shell right-hand member lid respectively, the both ends of rotor respectively with corresponding shell end lid rotatable coupling, install the plunger pump body in the rotor, the axial lead of the plunger pump body and the axial lead collineation of motor pump shell, its characterized in that: the plunger pump body consists of a pump core and a transmission mechanism;

the pump core comprises a plunger sleeve and a plunger shaft, a plunger sleeve shell is fixedly arranged outside the plunger sleeve, a cylinder body is formed in the plunger sleeve, an oil inlet channel and an oil discharge channel are arranged on the plunger sleeve, a plunger of the plunger shaft can be arranged in the plunger sleeve in a reciprocating manner along the cylinder body in an axial straight line manner and divides the cylinder body into a left chamber and a right chamber, a spiral oil distribution groove is arranged on the outer surface of the plunger shaft, when the plunger axially moves from the leftmost end to the rightmost end, the oil inlet channel is communicated with the right chamber through the corresponding spiral oil distribution groove, the oil discharge channel is communicated with the left chamber through the corresponding spiral oil distribution groove, when the plunger axially moves from the rightmost end to the leftmost end, the oil inlet channel is communicated with the left chamber through the corresponding spiral oil distribution groove, and the oil discharge channel is communicated with the right chamber through the corresponding spiral oil distribution groove; the spiral diversion trench consists of a spiral part and a rectangular part;

the plunger shaft outside the cylinder body is provided with a transmission mechanism and is connected with a rotor which drives the plunger shaft to rotate relative to the plunger sleeve; when the plunger shaft rotates, the transmission mechanism can enable the plunger shaft to do axial reciprocating motion.

2. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 1, wherein: the transmission mechanism comprises a cylindrical cam and a second roller wheel, the cylindrical cam is fixedly connected with the plunger shaft, a curved surface raceway which can enable the cylindrical cam to perform equal deceleration is arranged on the outer surface of the cylindrical cam, a cam shell is arranged outside the cylindrical cam, the cam shell is fixedly connected with the plunger sleeve shell, the second roller wheels are symmetrically fixed on the cam shell, and the second roller wheels can move along the curved surface raceway, are arranged in the corresponding curved surface raceway and are matched with the curved surface raceway to enable the plunger shaft to perform axial motion.

3. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 2, wherein: the second idler wheel is fixedly connected with the cam shell through a second idler wheel frame, a second angular contact ball bearing is arranged between the second idler wheel and the second idler wheel frame, the second angular contact ball bearing is axially positioned with a shaft shoulder in the second idler wheel through a second axial retainer ring, and a fourth spring gasket is arranged between the second idler wheel frame and the cam shell.

4. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 2, wherein: the cylindrical cam is mounted on the plunger shaft through key connection, and axial and circumferential positioning is achieved through a shaft shoulder on the plunger shaft and the first axial retainer ring.

5. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 1, wherein: the fixed axle radially wears to be equipped with to the right-hand member of plunger axle, the both ends of fixed axle all are equipped with first gyro wheel, the right-hand member inboard of rotor is provided with changes the cover, the position that corresponds first gyro wheel on changeing the cover has seted up the axial slide, first gyro wheel sets up in the axial slide and can follow the axial slide and roll.

6. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 1, wherein: the left end face of the plunger sleeve is provided with an oil inlet and an oil outlet, the outer surface of the plunger sleeve is provided with a first semi-annular groove and a second semi-annular groove, the oil inlet is communicated with the first semi-annular groove to form an oil inlet channel, and the oil outlet is communicated with the second semi-annular groove to form an oil discharge channel.

7. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 6, wherein: the spiral oil distribution groove comprises a left oil distribution groove and a right oil distribution groove, the left oil distribution groove and the right oil distribution groove are symmetrically arranged, the left oil distribution groove and the right oil distribution groove are opposite in direction and are staggered by 90 degrees, the cylinder body is provided with an oil absorption window and an oil discharge window at the position corresponding to the left oil distribution groove and the right oil distribution groove, the oil absorption window is communicated with the first semi-annular groove, and the oil discharge window is communicated with the second semi-annular groove.

8. A two-dimensional plunger motor pump for a spiral oil distribution groove according to claim 1, wherein: the plunger sleeve shell is of a cylindrical structure with an opening at the left end and a closed right end, and the left end of the plunger sleeve shell is fixedly connected with the left end cover of the shell.

9. A two-dimensional plunger motor pump for a spiral oil distribution groove according to any one of claims 1 to 8, wherein: the stator is formed by winding a stator winding on a stator core, and the permanent magnets are uniformly distributed on the rotor and are respectively and rotationally connected with the left end cover and the right end cover of the shell through first angular contact ball bearings.

10. A two-dimensional piston motor pump for a spiral oil distribution groove as defined in claim 9, wherein: and sealing rings are arranged between the plunger shaft and the left end of the plunger sleeve and between the plunger shaft and the right end of the plunger sleeve shell.

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