阅读说明：本技术 一种定量柱塞滑靴式电机泵 (Quantitative plunger piston sliding shoe type motor pump ) 是由 孙晓浩 汤晓滢 段俊发 于 2020-06-22 设计创作，主要内容包括：本发明涉及一种定量柱塞滑靴式电机泵,它包括壳体,在后端盖内侧设有斜盘,在前端盖内侧设有配油盘,在所述配油盘内侧设有浮动盘,所述浮动盘通过密封套与缸体上的柱塞孔相连,所述密封套设在柱塞孔内,在所述浮动盘和配油盘中部穿设有轴,它们与轴之间留有间隙,所述轴的一端通过圆锥滚子轴承与前端盖相连,所述轴的另一端与缸体螺旋连接,在该端轴旁设有中心弹簧,所述中心弹簧与弹簧座相连,所述弹簧座设在缸体内,所述弹簧座与球铰配合连接,所述球铰插装在回程盘上,所述回程盘与滑靴柱塞组件中的滑靴一面贴紧并将滑靴另一面压紧在斜盘上。本发明以工作介质为油,结构更加紧凑、轻巧,功率密度高,工作噪声低,运行平稳可靠,故障率低。(The invention relates to a quantitative plunger piston and slipper type motor pump, which comprises a shell, wherein an inclined plate is arranged on the inner side of a rear end cover, an oil distribution disc is arranged on the inner side of a front end cover, a floating disc is arranged on the inner side of the oil distribution disc, the floating disc is connected with a plunger hole on a cylinder body through a sealing sleeve, the sealing sleeve is sleeved in the plunger hole, shafts are arranged in the middle of the floating disc and the oil distribution disc in a penetrating mode, a gap is reserved between the shafts and the shafts, one end of each shaft is connected with the front end cover through a conical roller bearing, the other end of each shaft is spirally connected with the cylinder body, a central spring is arranged beside the end shaft and connected with a spring seat, the spring seat is arranged in the cylinder body and is in matched connection with a ball hinge, the ball hinge is inserted in a return disc, and the return disc is tightly attached to one surface of a slipper. The invention takes the working medium as oil, has more compact and light structure, high power density, low working noise, stable and reliable operation and low failure rate.)

1. The utility model provides a ration plunger piston slipper motor pump which characterized in that: the oil distribution device comprises a shell (1), wherein one end of the shell (1) is provided with a rear end cover (2), the other end of the shell is provided with a front end cover (3), the rear end cover (2) is fixedly connected with the shell (1) through a set screw I (4), the front end cover (3) is fixedly connected with the shell (1) through a set screw II (5), the inner side of the rear end cover (2) is provided with an inclined disc (6), the inclined disc (6) is fixedly connected with the rear end cover (2) through a set screw III (7), the inner side of the front end cover (3) is provided with an oil distribution disc (8), the oil distribution disc (8) is fixedly connected with the front end cover (3) through a pin (9), the inner side of the oil distribution disc (8) is provided with a floating disc (10), the floating disc (10) is connected with a plunger hole (13) on a cylinder body (12) through a sealing sleeve (11), and the sealing sleeve (11) is arranged, the oil distribution device is characterized in that an O-shaped ring I (14) is arranged at the front end of the sealing sleeve (11), the floating disc (10) and the cylinder body (12) rotate together, the floating disc (10) and the oil distribution disc (8) are in surface-to-surface contact, a shaft (15) penetrates through the middle of the floating disc (10) and the oil distribution disc (8), a gap is reserved between the floating disc and the shaft (15) and between the floating disc and the shaft (15), one end of the shaft (15) is connected with the front end cover (3) through a conical roller bearing (16), the conical roller bearing (16) is arranged in a groove (17) of the front end cover (3), the other end of the shaft (15) is spirally connected with the cylinder body (12), a central spring (18) is arranged beside the end shaft (15), the central spring (18) is connected with a spring seat (19), the spring seat (19) is arranged in the cylinder body (12), the spring seat (19) is connected with a spherical hinge (20) in a matched manner, and, a plurality of piston shoe plunger assemblies (22) are uniformly arranged on a return disc (21) outside the spherical hinge (20), plungers (23) in the piston shoe plunger assemblies (22) are arranged in plunger holes (13) of a cylinder body (12), plunger sleeves (24) are arranged in the plunger holes (13), one surface of each piston shoe (25) in each piston shoe plunger assembly (22) is tightly attached to the return disc (21) and the other surface of each piston shoe (25) is tightly pressed on a swash plate (6), the inclination angle of each swash plate (6) is 10-20 degrees, a rotor coil (26) is fixedly arranged on the outer side wall of the cylinder body (12), a stator coil (27) is fixedly arranged on the inner wall of the shell (1), the rotor coil (26) and the stator coil (27) are correspondingly arranged, a gap is reserved between the rotor coil (26) and the stator coil (27), and an O-shaped ring II (28) is arranged at the joint of the rear end cover (2) and the shell (1, the oil distribution box is characterized in that an O-shaped ring III (29) is arranged at the joint of the front end cover (3) and the shell (1), an oil inlet (30) and an oil outlet (31) are formed in the front end cover (3), an exhaust port is formed in the side wall of the shell (1), an exhaust plug (32) is arranged in the exhaust port, the oil distribution disc (8), the spring seat (19), the plunger sleeve (24) and the sliding shoe (25) are all made of engineering plastics, and the thickness of the front end cover (3) is larger than that of the rear end cover (2).

2. The quantitative plunger slipper motor pump of claim 1, wherein: and a connecting boss (33) is arranged on the outer end face of the front end cover (3).

3. The quantitative plunger slipper motor pump of claim 1, wherein: the rotor coil (26) and the stator coil (27) are arranged coaxially.

4. The quantitative plunger slipper motor pump of claim 1, wherein: the spherical hinge (20) is inserted in the center of the return disc (21), and a plurality of slipper plunger assemblies (22) are distributed in an annular array by taking the slipper plunger assemblies as the center.

5. The quantitative plunger slipper motor pump of claim 1, wherein: the oil inlet (30) and the oil outlet (31) are arranged in the radial direction of the front end cover (3) and are symmetrically arranged, and the oil inlet and the oil outlet are connected with the oil distribution disc (8) through oil paths.

6. The quantitative plunger slipper motor pump of claim 1, wherein: the front end of the spring seat (19) is in a ball socket shape, and the ball hinge (20) is arranged in the ball socket.

7. The quantitative plunger slipper motor pump of claim 1, wherein: a central channel I (34) is arranged on the spherical hinge (20).

8. The quantitative plunger slipper motor pump of claim 1, wherein: the spring seat (19) is provided with a central channel II, the central channel II comprises a front small-diameter channel (35) and a rear large-diameter channel (36), and the central spring (18) is arranged in the rear large-diameter channel (36).

9. The quantitative plunger slipper motor pump of claim 1, wherein: the cylinder body (12) is provided with a central channel III, the central channel III comprises a spring seat channel (37) and a shaft connecting channel (38), the inner diameter of the spring seat channel (37) is larger than that of the shaft connecting channel (38), and the spring seat (19) moves back and forth in the spring seat channel (37).

10. The quantitative plunger slipper motor pump of claim 1, wherein: the engineering plastic is PEEK engineering plastic.

Technical Field

The invention relates to a pump, in particular to a plunger sliding shoe type motor pump.

Background

The motor pump is a novel hydraulic power unit, integrates the motor and the pump, and has the advantages of simple and compact structure, high efficiency, less leakage and low noise. Compared with a three-section type power unit connected by a conventional coupler, the motor pump has the advantages that the structural integration level is high, the volume size is greatly reduced on the basis of the prior art, the motor pump is very convenient to carry, and the motor pump can be directly used in special occasions with high requirements on narrow and small environments in many spaces.

The motor pump has the advantages of high integration level, compact structure and tense internal space, and when the motor pump works, in order to ensure that the parts inside the motor pump do not interfere with each other and realize the functions stably and reliably, a lot of problems which are difficult to solve can be met in the setting of the structural parameters of the motor pump.

The application number is 201010103656.8 'double swash plate valve flow distribution axial plunger type water hydraulic shield pump', which comprises a shell, a motor stator, a motor rotor, a cylinder body, a plunger piston shoe component, a return plate, a spherical hinge, a swash plate and a flow distribution valve component, wherein the two swash plates are symmetrically arranged on the left side and the right side of the cylinder body, the design can effectively improve the flow, but the axial diameter of the supporting part of the cylinder body of the pump is smaller due to the space limitation of the return plates and the spherical hinge structures on the two sides, and the aperture of a water suction port and a water pressing port of the pump cannot be too small in order to ensure that cavitation is not generated while the whole flow of the pump is ensured, so that the wall thickness of the supporting parts at the two ends of the cylinder body is greatly reduced; moreover, the size of the water suction port cannot be enlarged, so that the whole flow of the pump cannot be increased, the power density of the motor pump is improved, and the development space of the motor pump is reduced to a great extent.

The application number is 201210090290.4 'a plunger type motor pump', which comprises a shell, a motor stator, a motor rotor, a cylinder body, 2N plunger piston shoe components, a left swash plate, a right swash plate, 2N suction valve components and 2N extrusion valve components, wherein the inner side of a left end cover and the inner side of a right end cover are respectively fastened with the left swash plate and the right swash plate through positioning pins, and the centers of the left swash plate and the right swash plate are coaxial and the plate surfaces are parallel; two corresponding plunger piston shoe assemblies which are coaxial with each other on the left end surface and the right end surface of the cylinder boss are mutually supported through the supporting rod in the first pore channel to form a plunger piston-shoe pair, and the piston shoe heads at the two ends of each plunger piston-shoe pair are respectively pressed on the disc surfaces of the left swash plate and the right swash plate; the right end of the cylinder body extends out of the right end cover, an oil discharge port on the right end face of the cylinder body is sealed by a threaded plug, and a radial oil discharge hole communicated with the oil discharge port is formed in the side face of the right end of the cylinder body; the right bearing cover is fastened at the center of the outer side of the right end cover through a screw, the tapered roller bearing is supported against the right end of the cylinder body, the right bearing cover is in a cylindrical shape with the bottom closed, an end sleeve is assembled in the right bearing cover, the circumferential rotation is limited by a set screw penetrating through the right bearing cover, the end sleeve is in a cylindrical shape with the upper edge and the lower edge protruding inwards, the upper caliber and the lower caliber of the end sleeve are matched with the outer diameter of the right end of the cylinder body and sleeved at the right end of the cylinder body, and one end of the end sleeve is axially; oil outlet holes are formed in the positions, corresponding to the radial oil outlet holes in the right end side face of the cylinder body, of the right bearing cover and the side face of the end sleeve; and the hydraulic oil is communicated with an external hydraulic system from the oil discharge hole in the side surface of the cylinder body through the end sleeve and the oil outlet hole of the right bearing cover. The oil distribution device is complex in structure, two swash plates are arranged inside the shell, the occupied space is large, and in addition, the oil distribution device adopts the valve assembly to distribute oil, so that faults are easy to occur.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to overcome the defects in the prior art and provide the quantitative plunger sliding shoe type motor pump which has the advantages of more compact and light structure, high power density, low working noise, stable and reliable operation and low failure rate and adopts oil as a working medium.

The technical scheme is as follows: in order to solve the technical problem, the invention provides a quantitative plunger piston shoe type motor pump which comprises a shell, wherein one end of the shell is provided with a rear end cover, the other end of the shell is provided with a front end cover, the rear end cover is fixedly connected with the shell through a set screw I, the front end cover is fixedly connected with the shell through a set screw II, the inner side of the rear end cover is provided with a swash plate, the swash plate is fixedly connected with the rear end cover through a set screw III, the inner side of the front end cover is provided with an oil distribution disc, the oil distribution disc is fixedly connected with the front end cover through a pin, the inner side of the oil distribution disc is provided with a floating disc, the floating disc is connected with a plunger hole in a cylinder body through a sealing sleeve, the sealing sleeve is arranged in the plunger hole, the front end of the sealing sleeve is provided with an O-shaped ring I, the floating disc and the cylinder body rotate together, the floating disc and the, a gap is reserved between the front end cover and the shaft, one end of the shaft is connected with the front end cover through a tapered roller bearing, the tapered roller bearing is arranged in a groove of the front end cover, the other end of the shaft is spirally connected with a cylinder body, anaerobic adhesive is coated at the thread part for strengthening and fixing, a central spring is arranged beside the end shaft and is connected with a spring seat, the shaft is connected with the spring seat through the central spring, the spring seat is arranged in the cylinder body, the spring seat is matched and connected with a spherical hinge, the spherical hinge is fixed on a return plate, a plurality of piston shoe plunger assemblies are uniformly arranged on the return plate outside the spherical hinge, plungers in the piston shoe plunger assemblies are arranged in plunger holes of the cylinder body, plunger sleeves are arranged in the plunger holes, the return plate is tightly attached to one surface of the piston shoes in the piston shoe plunger assemblies and tightly presses the other surface of the piston shoes on a swash plate, the inclination angle of the swash plate is 10-20 degrees, the fixed rotor coil that is equipped with of cylinder body lateral wall the fixed stator coil that is equipped with of shells inner wall, rotor coil and stator coil correspond to set up and leave the clearance between them the junction of rear end housing and casing is equipped with O type circle II the junction of front end housing and casing is equipped with O type circle III be equipped with oil inlet and oil-out on the front end housing be equipped with the gas vent on the casing lateral wall be equipped with the exhaust end cap in the gas vent, join in marriage food tray, spring holder, plunger bushing and piston shoes and all adopt engineering plastics to make, the thickness of front end housing is greater than the thickness of rear end housing.

Preferably, a connecting boss is arranged on the outer end face of the front end cover.

Preferably, the rotor coil and the stator coil are coaxially arranged.

Preferably, the spherical hinge is inserted in the center of the return disc, and a plurality of slipper plunger assemblies are distributed in an annular array by taking the spherical hinge as the center.

Preferably, the oil inlet and the oil outlet are arranged in the radial direction of the front end cover and are symmetrically arranged, and the oil inlet and the oil outlet are connected with the oil distribution disc through oil passages.

Preferably, the front end of the spring seat is in a ball socket shape, and the ball is hinged in the ball socket.

Preferably, a central channel I is arranged on the spherical hinge.

Preferably, a central channel II is arranged on the spring seat and comprises a front small-diameter channel and a rear large-diameter channel, and the central spring is arranged in the rear large-diameter channel.

Preferably, a central channel iii is arranged on the cylinder body, the central channel iii comprises a spring seat channel and a shaft connecting channel, the inner diameter of the spring seat channel is larger than that of the shaft connecting channel, and the spring seat moves back and forth in the spring seat channel.

Preferably, the engineering plastic is PEEK engineering plastic.

In the invention, fences can be integrally formed on the outer side wall of the cylinder body, and coils are wound between the fences to form a rotor coil.

In the invention, the shaft can be fixedly connected with the cylinder body through a spline.

In the invention, the thickness of the front end cover is 6-8 times of that of the rear end cover.

Has the advantages that: compared with the prior art, the invention has the following remarkable advantages: the invention has reasonable integral structure arrangement, and the shaft is used for transmission during rotation; the oil distribution disc is contacted with the floating disc and the front end cover and is used for distributing high-pressure and low-pressure oil liquid media; the return disc is in contact with the sliding shoe plunger assembly and is used for providing return force; the spherical hinge is contacted with the return disc and the spring seat and is used for providing supporting force for the return disc; the piston shoe plunger assembly is contacted with the cylinder body, the return stroke disc and the swash plate and reciprocates in a plunger hole of the cylinder body; the rear end cover, the oil distribution disc, the floating disc, the cylinder body, the plunger piston shoe assembly and the swash plate form a closed variable volume cavity, so that hydraulic oil is sucked or pressed out when the plunger reciprocates through the rotation of the shaft; the invention distributes oil through the oil distribution disc, changes the prior valve component to distribute oil, and has low failure rate; the shaft is in spiral connection with the cylinder body and is firmly connected, the spring seat is arranged in the spring seat channel of the central channel III, the shaft is arranged in the shaft connecting channel of the central channel III, the inner diameter of the spring seat channel is larger than that of the shaft connecting channel and is used for limiting the movement of the spring seat, the spring seat and the shaft are supported by the central spring, one end of the central spring is arranged in the rear large-diameter channel of the central channel II, and the other end of the central spring is arranged in the shaft connecting channel at the front end of the shaft, so that the mounting and positioning are accurate; the spherical hinge is matched and connected with a ball socket at the front end of the spring seat, the spherical hinge is arranged on the return disc, the return disc is in surface contact with the swash plate, and a set of swash plate and return disc structures are arranged in the shell, so that the internal space is effectively saved; the thickness of the front end cover is larger than that of the rear end cover, and the front end cover and the rear end cover are matched and connected with the shell, so that the integral strength is high; the oil distribution disc, the spring seat, the plunger sleeve and the sliding shoes in the sliding shoe plunger assembly are all made of PEEK engineering plastics, so that the wear resistance is good, the influence of fragments generated by the abrasion of previous metal parts is effectively reduced, and the service life is greatly prolonged; the shaft, the spring seat and the spherical hinge are all arranged in the middle of the shell, so that the whole body can stably run.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the outer end face configuration of the front end cap of the present invention;

fig. 3 is a schematic view of a connection structure of a cylinder and a spring seat in the present invention.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1, 2 and 3, the quantitative plunger piston shoe type motor pump of the present invention comprises a casing 1, a rear end cap 2 is arranged at one end of the casing 1, a front end cap 3 is arranged at the other end of the casing, a connecting boss 33 is arranged on the outer end face of the front end cap 3, the rear end cap 2 is fixedly connected with the casing 1 through a set screw i 4, the front end cap 3 is fixedly connected with the casing 1 through a set screw ii 5, a swash plate 6 is arranged inside the rear end cap 2, the swash plate 6 is fixedly connected with the rear end cap 2 through a set screw iii 7, an oil distribution plate 8 is arranged inside the front end cap 3, the oil distribution plate 8 is fixedly connected with the front end cap 3 through a pin 9, a floating plate 10 is arranged inside the oil distribution plate 8, the floating plate 10 is connected with a plunger hole 13 on a cylinder body 12 through a sealing sleeve 11, the sealing sleeve 11 is arranged in the plunger hole 13, the front end of the sealing sleeve 11 is provided with an O-shaped ring I14, the floating disc 10 and the cylinder body 12 rotate together, the floating disc 10 and the oil distribution disc 8 are in surface-to-surface contact, a shaft 15 penetrates through the middle parts of the floating disc 10 and the oil distribution disc 8, a gap is reserved between the shaft 15 and the shaft 15, one end of the shaft 15 is connected with the front end cover 3 through a tapered roller bearing 16, the tapered roller bearing 16 is arranged in a groove 17 of the front end cover 3, the other end of the shaft 15 is spirally connected with the cylinder body 12, a central spring 18 is arranged beside the end shaft 15, the central spring 18 is connected with a spring seat 19, the spring seat 19 is arranged in the cylinder body 12, the front end of the spring seat 19 is in a ball socket shape, a ball hinge 20 is arranged in a ball socket, the ball hinge 20 is inserted in the center of a return stroke disc 21, a plurality of piston shoe plunger assemblies 22 are distributed in an annular array by taking the ball hinge as the center, plungers 23 in the piston, a plunger sleeve 24 is arranged in the plunger hole 13, the return disc 21 is tightly attached to one surface of a slipper 25 in a slipper plunger assembly 22 and tightly presses the other surface of the slipper 25 on a swash plate 6, the inclination angle of the swash plate 6 is 10-20 degrees, a rotor coil 26 is fixedly arranged on the outer side wall of the cylinder body 12, a stator coil 27 is fixedly arranged on the inner wall of the shell 1, the rotor coil 26 and the stator coil 27 are correspondingly arranged with a gap left between the rotor coil 26 and the stator coil 27, the rotor coil 26 and the stator coil 27 are coaxially arranged, an O-shaped ring II 28 is arranged at the joint of the rear end cover 2 and the shell 1, an O-shaped ring III 29 is arranged at the joint of the front end cover 3 and the shell 1, an oil inlet 30 and an oil outlet 31 are arranged on the front end cover 3, the oil inlet 30 and the oil outlet 31 are arranged in the radial direction of the front end cover 3, the side wall of the shell 1 is provided with an exhaust port, an exhaust plug 32 is arranged in the exhaust port, the oil distribution disc 8, the spring seat 19, the plunger sleeve 24 and the sliding shoe 25 are all made of PEEK engineering plastics, the thickness of the front end cover 3 is larger than that of the rear end cover 2, the spherical hinge 20 is provided with a central channel I34, the spring seat 19 is provided with a central channel II, the central channel II comprises a front small-diameter channel 35 and a rear large-diameter channel 36, the central spring 18 is arranged in the rear large-diameter channel 36, the cylinder body 12 is provided with a central channel III, the central channel III comprises a spring seat channel 37 and a shaft connecting channel 38, the inner diameter of the spring seat channel 37 is larger than that of the shaft connecting channel 38, and the spring seat 19 moves back and forth in the spring seat channel 37. The invention has reasonable integral structure arrangement, and the shaft is used for transmission during rotation; the oil distribution disc is contacted with the floating disc and the front end cover and is used for distributing high-pressure and low-pressure oil liquid media; the return disc is in contact with the sliding shoe plunger assembly and is used for providing return force; the spherical hinge is contacted with the return disc and the spring seat and is used for providing supporting force for the return disc; the piston shoe plunger assembly is contacted with the cylinder body, the return stroke disc and the swash plate and reciprocates in a plunger hole of the cylinder body; the rear end cover, the oil distribution disc, the floating disc, the cylinder body, the plunger piston shoe assembly and the swash plate form a closed variable volume cavity, so that hydraulic oil is sucked or pressed out when the plunger reciprocates through the rotation of the shaft; the invention distributes oil through the oil distribution disc, changes the prior valve component to distribute oil, and has low failure rate; the shaft is in spiral connection with the cylinder body and is firmly connected, the spring seat is arranged in the spring seat channel of the central channel III, the shaft is arranged in the shaft connecting channel of the central channel III, the inner diameter of the spring seat channel is larger than that of the shaft connecting channel and is used for limiting the movement of the spring seat, the spring seat and the shaft are supported by the central spring, one end of the central spring is arranged in the rear large-diameter channel of the central channel II, and the other end of the central spring is arranged in the shaft connecting channel at the front end of the shaft, so that the mounting and positioning are accurate; the spherical hinge is matched and connected with a ball socket at the front end of the spring seat, the spherical hinge is arranged on the return disc, the return disc is in surface contact with the swash plate, and a set of swash plate and return disc structures are arranged in the shell, so that the internal space is effectively saved; the thickness of the front end cover is larger than that of the rear end cover, and the front end cover and the rear end cover are matched and connected with the shell, so that the integral strength is high; the oil distribution disc, the spring seat, the plunger sleeve and the sliding shoes in the sliding shoe plunger assembly are all made of PEEK engineering plastics, so that the wear resistance is good, the influence of fragments generated by the abrasion of previous metal parts is effectively reduced, and the service life is greatly prolonged; the shaft, the spring seat and the spherical hinge are all arranged in the middle of the shell, so that the whole body can stably run.

The present invention provides a thought and a method, and a method and a way for implementing the technical scheme are many, the above is only a preferred embodiment of the present invention, it should be noted that, for a person skilled in the art, a plurality of improvements and modifications can be made without departing from the principle of the present invention, and the improvements and modifications should be regarded as the protection scope of the present invention, and each component not explicitly described in the embodiment can be implemented by the prior art.