A high-pressure, high-flow-rate rotary oil distribution device

Abstract

This invention relates to the field of hydraulic system components technology, and discloses a high-pressure, high-flow rotary oil distribution device, which includes a stator, a mover, an oil distribution mandrel, and a cam ring. The stator has an inlet / outlet oil channel and a radial oil distribution chamber, with a plunger built into the oil distribution chamber. The oil distribution mandrel has two radially perpendicular oil passages, and the front gear meshes with the gear plate of the mover for transmission. When the mover rotates, the gear plate drives the oil distribution mandrel to rotate precisely, causing the oil passages to periodically switch between open and closed. The cam ring profile abuts against the tail end of the plunger, driving it to reciprocate within the oil distribution chamber, achieving precise matching between oil distribution action and power transmission. This device distributes the load through multiple oil distribution mandrels, allowing for a small-diameter design of the mandrels, effectively reducing the impact of thermal expansion. Combined with synchronous gear transmission, it solves the problems of high-pressure leakage, jamming, and low efficiency in existing devices. It can be adapted to different power scenarios, meeting the needs of high-pressure, high-flow oil distribution, improving oil distribution efficiency, extending service life, and reducing maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of hydraulic system components, and in particular to a high-pressure, high-flow rotary oil distribution device. Background Technology

[0002] Rotary oil distribution devices are core components of hydraulic systems, responsible for the directional transmission of fluid media between the stator and rotor. Their performance directly determines the pressure output, flow stability, energy efficiency, and service life of hydraulic motors, pumps, and other equipment, and they are widely used in engineering machinery, precision manufacturing, and other fields. With the upgrading of industrial demands, hydraulic systems are developing towards higher pressure and larger flow rates, placing higher requirements on the accuracy, sealing reliability, and wear resistance of oil distribution devices. However, the three existing mainstream devices all have significant technical defects:

[0003] Existing disc-type oil distribution devices use end-face contact seals. Although they are compact and suitable for medium and low pressure scenarios, they are prone to rapid wear of seals and medium leakage under high pressure due to increased end-face friction. This results in low oil distribution efficiency and cannot meet the high-pressure, high-flow oil distribution requirements.

[0004] Existing shaft distribution devices rely on gap seals. Although they have a certain high pressure bearing capacity, there is an inherent contradiction in the gap design: if the gap is too small, the spindle and shaft hole will easily seize due to thermal expansion; if the gap is too large, the leakage will increase sharply and the efficiency will drop sharply, making it impossible to balance high pressure adaptability and operational reliability.

[0005] Ball valve type oil distribution device realizes the opening and closing of oil circuit through ball valve and return spring. Although it can withstand high pressure, the spring is prone to fatigue failure due to long-term impact, resulting in unstable oil distribution and low efficiency. At the same time, the opening and closing of ball valve generates obvious noise, making it difficult to adapt to low-noise operation scenarios.

[0006] In summary, existing technologies cannot meet the comprehensive performance requirements under high pressure and high flow conditions, which has become a bottleneck for the upgrading of hydraulic systems. There is an urgent need to develop a new type of rotary oil distribution device that is precise in oil distribution, has excellent sealing, long service life, and is easy to maintain. Summary of the Invention

[0007] The purpose of this invention is to address the above-mentioned problems by providing a high-pressure, high-flow-rate rotary oil distribution device, so as to solve the problem that the existing technology cannot meet the comprehensive performance requirements under high-pressure, high-flow-rate conditions.

[0008] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0009] A high-pressure, high-flow-rate rotary oil distribution device includes a stator and a mover rotatably connected to the stator. The stator integrates an oil inlet channel and an oil outlet channel for oil medium input and output. The stator has several oil distribution chambers evenly distributed radially, each of which selectively communicates with the oil inlet channel and the oil outlet channel. A plunger is slidably assembled in each oil distribution chamber. An oil distribution spindle is disposed through the stator along its axial direction. The oil distribution spindle has an oil passage hole corresponding to the oil inlet channel and the oil outlet channel, and the two oil passage holes are arranged parallel to each other along the axial direction of the oil distribution spindle and are radially perpendicular to each other at 90°. A drive gear is fixedly connected to the front end of the oil distribution spindle, and the oil distribution spindle is driven to rotate through gear transmission, so that the two oil passage holes alternately form a periodic on-off engagement with the oil inlet channel and the oil outlet channel. A cam ring is disposed on the mover corresponding to each plunger position. The curved profile surface of the cam ring abuts against the tail end of the plunger. A gear disk is coaxially fixed on the mover, and the ring teeth of the gear disk mesh with the drive gear on the oil distribution spindle.

[0010] Preferably, the stator includes a housing, with an oil inlet and an oil outlet on its outer circumferential surface, and an oil inlet groove and an oil outlet groove respectively communicating with the oil inlet and oil outlet grooves on the inner wall of the housing. An oil distribution ring is sealed within the inner diameter of the housing, and the outer circumferential surface of the oil distribution ring has a plurality of oil inlet holes and oil outlet holes respectively communicating with the oil inlet grooves and oil outlet grooves. An oil distribution ring is sealed within the inner diameter of the oil distribution ring, and the oil distribution ring has a plurality of oil distribution cavities uniformly machined radially, each oil distribution cavity corresponding one-to-one with the oil inlet hole and oil outlet hole of the oil distribution ring. A column is slidably assembled within the oil distribution cavity. The piston includes a central shaft that is rotatably connected to the end cover of the housing. An outer cam ring is fixedly installed on the central shaft corresponding to the position of each piston, and the tail end of each piston abuts against the contour surface of the outer cam ring. The oil distribution ring has a shaft hole corresponding to each set of oil inlet and oil outlet holes. The oil distribution spindle passes through the shaft hole, and the two oil passage holes on the oil distribution spindle correspond to the positions of the oil inlet and oil outlet holes of the oil distribution ring, respectively. A gear plate is fixedly installed at one end of the central shaft near the oil distribution spindle. The gear plate is coaxially arranged with the central shaft, and the outer ring teeth of the gear plate mesh with the drive gears of each oil distribution spindle.

[0011] Preferably, the stator includes a fixedly mounted central shaft, the shaft body of which is machined with an oil inlet and an oil outlet. The outer circumferential surface of the central shaft has an oil inlet groove and an oil outlet groove respectively communicating with the oil inlet and oil outlet. An oil distribution ring is sealed to the outer diameter of the central shaft. The outer circumference of the oil distribution ring has a plurality of oil inlet holes and oil outlet holes respectively communicating with the oil inlet groove and oil outlet groove. An oil distribution ring is sealed to the outer diameter of the oil distribution ring. The oil distribution ring has a plurality of oil distribution cavities uniformly machined radially, each oil distribution cavity corresponding to one of the oil inlet holes and oil outlet holes of the oil distribution ring. Correspondingly, a plunger is slidably assembled in the oil distribution chamber; the mover includes a housing that is rotatably connected to the central shaft, and an inner cam ring is provided on the inner wall of the housing corresponding to each plunger, with the tail end of the plunger abutting against the contour surface of the inner cam ring; the oil distribution ring has a shaft hole machined on it corresponding to each set of oil inlet and oil outlet holes, and the oil distribution spindle passes through the shaft hole, with two oil passage holes on the oil distribution spindle corresponding to the positions of the oil inlet and oil outlet holes of the oil distribution ring respectively; a gear plate is fixedly provided on the side of the housing near the oil distribution spindle, and the inner ring teeth of the gear plate mesh with the drive gears of each oil distribution spindle for transmission.

[0012] Preferably, the plunger tail end is provided with a roller, and the roller is rolled to connect the contour surface of the cam ring.

[0013] Preferably, the oil passage holes on the oil distribution mandrel are all designed as elongated holes.

[0014] Preferably, a retaining ring is provided at the tail end of the oil distribution mandrel to axially limit the oil distribution mandrel.

[0015] Preferably, a front cover and a rear cover are respectively installed on both sides of the housing, and a sealing ring is embedded at the fitting point between the housing and the front cover and the rear cover to seal the internal structure.

[0016] Preferably, the two ends of the central shaft are assembled onto the housing via bearings.

[0017] The beneficial effects of this invention are as follows:

[0018] Precise and stable oil distribution: Through the synchronous meshing transmission between the gear plate and the drive gear, the oil distribution spindle can accurately switch the on / off state according to the rotation angle of the mover. The two oil passages are set radially at 90° vertically and the long hole design effectively avoids oil circuit crosstalk. In conjunction with the reciprocating motion of the cam ring drive plunger, the precise matching of oil distribution action and power transmission is achieved.

[0019] Reliable sealing and leak prevention: The multi-oil distribution mandrel distributed load-bearing design allows for a smaller design size of the oil distribution mandrel, significantly reducing the impact of thermal expansion. The oil distribution mandrel fits more tightly with the shaft hole, reducing oil leakage, solving the high-pressure leakage problem of existing equipment, and improving oil distribution efficiency.

[0020] Wear-resistant, durable, and easy to maintain: The roller at the end of the plunger converts sliding friction into rolling friction, reducing component wear; the spring component, which is prone to fatigue failure, is eliminated, and the gear transmission structure is stable and reliable, reducing the probability of failure; the external meshing and internal meshing transmission designs take into account both ease of maintenance and protective performance, extending the overall service life of the device. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is an exploded view of the first embodiment of the present invention.

[0024] Figure 3 for Figure 2 An exploded view after hiding the front and back covers.

[0025] Figure 4 for Figure 3 An exploded view from another perspective.

[0026] Figure 5 This is a cross-sectional view of the first embodiment of the present invention.

[0027] Figure 6 This is an exploded view of the second embodiment of the present invention.

[0028] Figure 7 for Figure 6 An exploded view from another perspective (with the front and rear covers hidden).

[0029] Figure 8 This is a cross-sectional view of the second embodiment of the present invention.

[0030] In the diagram: 10--Housing shell; 11--Oil inlet; 12--Oil outlet; 13--Oil inlet groove; 14--Oil outlet groove; 15--Front end cover; 16--Rear end cover; 17--Sealing ring; 18--Bearing; 20--Oil distribution ring; 21--Oil inlet hole; 22--Oil outlet hole; 23--Shaft hole; 30--Oil distribution ring; 31--Oil distribution cavity; 32--Plunger; 33--Roller; 40--Central shaft; 41--Outer cam ring; 42--Inner cam ring; 43--Concave tooth 43; 44--Convex tooth 44; 50--Oil distribution mandrel; 51--Oil passage hole; 52--Drive gear; 53--Retaining ring; 60--Gear disc. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] like Figures 1-8 As shown, a high-pressure, high-flow-rate rotary oil distribution device includes a stator and a mover rotatably connected to the stator in its core structure. The stator integrates an inlet channel and an outlet channel for the input and output of the oil medium. Several distribution chambers 31 are evenly distributed along the radial direction of the stator, each selectively connected to the inlet and outlet channels, and a plunger 32 is slidably fitted within each distribution chamber 31. An oil distribution mandrel 50 is axially inserted along the stator, with an oil passage 51 corresponding to both the inlet and outlet channels. The two oil passages 51 are arranged parallel to each other along the axial direction of the oil distribution mandrel and radially at a 9-degree angle. The oil distribution spindle 50 is set perpendicularly to each other at 0°. A drive gear 52 is fixedly connected to the front end of the spindle, driving the spindle 50 to rotate via gear transmission. This causes the two oil passages 51 to alternately engage with the oil inlet and outlet channels in a periodic on-off cycle. A cam ring is positioned on the moving part corresponding to each plunger 32. The curved profile of the cam ring abuts against the tail end of the plunger 32. A gear disk 60 is coaxially fixed on the moving part, and the ring teeth of the gear disk 60 mesh with the drive gear 52 on the oil distribution spindle 50. During operation, the rotation of the moving part drives the drive gear 52 to rotate synchronously. Through gear meshing, the oil distribution spindle 50 rotates precisely, causing the oil passages 51 of the spindle 50 to switch between the oil inlet and outlet channels at a preset angle. This, combined with the cam ring driving the reciprocating motion of the plunger 32, completes efficient directional oil distribution.

[0033] This invention completes oil distribution through multiple radially arranged oil distribution chambers 31 equipped with oil distribution mandrels 50. The structural design of multiple mandrels distributing oil separately allows the diameter of the oil distribution mandrels 50 to be designed to be smaller, thus minimizing the change in the size of the oil distribution mandrels 50 due to thermal expansion. Consequently, the fit clearance between the oil distribution mandrels 50 and the shaft hole 23 can be designed to be smaller, resulting in good oil distribution sealing effect, low leakage, and high efficiency, which can meet the usage requirements under high pressure and high flow conditions.

[0034] First embodiment:

[0035] like Figures 1-5As shown, in this embodiment, the stator and mover adopt a "stator-shell-rotor" structure design. Specifically, the stator includes a housing 10, with an oil inlet 11 and an oil outlet 12 on the outer circumferential surface of the housing 10. The inner wall of the housing 10 has an oil inlet groove 13 and an oil outlet groove 14 connected to the oil inlet 11 and the oil outlet 12, respectively, along the circumferential direction. An oil distribution ring 20 is sealed and fitted inside the housing 10. The outer circumferential surface of the oil distribution ring 20 has several oil inlet holes 21 and oil outlet holes 22, respectively, connected to the oil inlet groove 13 and the oil outlet groove 14. An oil distribution ring 30 is sealed and fitted inside the oil distribution ring 20. The oil distribution ring 30 has several oil distribution cavities 31 uniformly machined radially, each oil distribution cavity 31 corresponding one-to-one with the oil inlet hole 21 and the oil outlet hole 22 of the oil distribution ring 20. A plunger 32 is slidably fitted inside the oil distribution cavity 31. The actuator includes a central shaft 40 that rotatably connects to the end cover of the housing 10. An outer cam ring 41 is fixedly mounted on the central shaft 40 corresponding to the position of each plunger 32, and the tail end of each plunger 32 abuts against the contour surface of the outer cam ring 41. The oil distribution ring 20 has a shaft hole 23 corresponding to each set of oil inlet holes 21 and oil outlet holes 22. The oil distribution spindle 50 passes through the shaft hole 23, and the two oil passage holes 51 on the oil distribution spindle 50 correspond to the positions of the oil inlet holes 21 and oil outlet holes 22 of the oil distribution ring 20, respectively. A gear disk 60 is fixedly mounted on one end of the central shaft 40 near the oil distribution spindle 50. The gear disk 60 is coaxially arranged with the central shaft 40, and the outer ring teeth of the gear disk 60 mesh with the drive gears 52 of each oil distribution spindle 50 to form synchronous transmission.

[0036] When this embodiment is used for hydraulic motor oil distribution, the oil medium is injected through the oil inlet 11 of the housing 10 and distributed to each group of oil inlet holes 21 of the oil distribution ring 20 through the annular oil inlet groove 13. At this time, the oil distribution spindle 50 rotates under the drive of the gear plate 60 to the position where the oil inlet side passage hole 51 is open and the oil outlet side passage hole 51 is closed. The oil enters the oil distribution chamber 31 through the oil inlet hole 21 and the oil inlet passage hole 51 of the oil distribution spindle 50, pushing the plunger 32 to extend outward along the oil distribution chamber 31. The tail end of the plunger 32 abuts against the outer cam ring 41, converting the hydraulic energy into the torque that drives the central shaft 40 to rotate, driving the central shaft 40 to output rotational power. When the central shaft 40 drives the outer cam ring 41 to rotate to the limit position of the plunger 32 extension, the tail end of the plunger 32 falls exactly into the lowest point of the concave tooth 43 of the outer cam ring 41. At this time, the oil distribution spindle 50 rotates synchronously to the position where the oil inlet side passage hole 51 is closed and the oil outlet side passage hole 51 is open. Subsequently, the plunger 32 continues to push the central shaft 40 to rotate, and the contour of the convex tooth 44 of the outer cam ring 41 gradually squeezes the current plunger 32 back. The oil in the oil distribution chamber 31 is collected through the oil outlet side passage hole 51, the oil outlet hole 22 of the oil distribution ring 20, and the annular oil outlet groove 14 to the oil outlet 12 for discharge. Through the synchronous transmission of the gear plate 60 and the gear, each oil distribution spindle 50 precisely switches between on and off states according to the rotation angle of the central shaft 40, realizing the continuous and stable rotation of the central shaft 40.

[0037] When this embodiment is used for hydraulic pump oil distribution, the central shaft 40 serves as the power input end connected to an external drive source to obtain rotational power. The oil medium is injected into the annular inlet groove 13 through the inlet 11, and enters the outer region of the distribution ring 30 through the inlet hole 21 of the distribution ring 20. The central shaft 40 drives the outer cam ring 41 to rotate, and its convex teeth 44 and concave teeth 43 alternately press against each plunger 32, causing it to reciprocate along the distribution cavity 31. Simultaneously, the gear disc 60 drives the distribution spindle 50 to rotate synchronously via gears, achieving precise matching between the oil passage 51, the inlet hole 21, and the outlet hole 22. When the concave tooth 43 corresponds to the plunger 32, the plunger 32 extends, increasing the volume of the oil distribution chamber 31 and creating negative pressure. The oil inlet hole 51 of the oil distribution spindle 50 is connected to the oil inlet hole 21, and the oil is drawn into the oil distribution chamber 31. When the convex tooth 44 of the outer cam ring 41 squeezes the plunger 32 during its return stroke, the volume of the oil distribution chamber 31 decreases, and the oil outlet hole 51 of the oil distribution spindle 50 is connected to the oil outlet hole 22. After being pressurized, the oil is pumped out from the oil outlet 12 through the oil outlet hole 22 and the oil outlet groove 14.

[0038] This embodiment adopts a "fixed-shell rotating shaft" structure, with the central shaft 40 serving as the core power output / input component. This structure is compact, has low rotational inertia, and is suitable for applications requiring ample installation space, such as engineering machinery actuators. The cylindrical contact pair between the outer cam ring 41 and the plunger 32 ensures uniform force distribution on the plunger 32, preventing uneven wear and extending its service life. The external meshing of the outer ring teeth of the gear disc 60 with the drive gear 52 provides high transmission efficiency and facilitates disassembly and maintenance. The diameter of the oil distribution spindle 50 can be reduced, allowing for controllable thermal expansion and contraction, which in turn controls the clearance of the shaft hole 23, significantly reducing oil leakage and greatly improving the system's oil distribution efficiency.

[0039] Second embodiment:

[0040] As another preferred embodiment of the present invention, such as Figures 6-8As shown, this embodiment adopts a "fixed-axis rotating shell" structure design. Specifically, the stator includes a fixedly mounted central shaft 40, the shaft body of which is machined with an oil inlet 11 and an oil outlet 12. The outer circumferential surface of the central shaft 40 is provided with an oil inlet groove 13 and an oil outlet groove 14 respectively connecting the oil inlet 11 and the oil outlet 12. An oil distribution ring 20 is sealed and fitted on the outer diameter of the central shaft 40. The outer circumference of the oil distribution ring 20 is provided with a plurality of oil inlet holes 21 and oil outlet holes 22 respectively connecting the oil inlet groove 13 and the oil outlet groove 14. An oil distribution ring 30 is sealed and fitted on the outer diameter of the oil distribution ring 20. A plurality of oil distribution cavities 31 are uniformly machined radially on the oil distribution ring 30. Each oil distribution cavity 31 corresponds one-to-one with the oil inlet hole 21 and the oil outlet hole 22 of the oil distribution ring 20. A sliding assembly is installed within the oil distribution cavity 31. Equipped with plungers 32; the mover includes a housing 10 rotatably connected to a central shaft 40, with an inner cam ring 42 provided on the inner wall of the housing 10 corresponding to each plunger 32, and the tail end of the plunger 32 abutting against the contour surface of the inner cam ring 42; the oil distribution ring 20 has a shaft hole 23 machined on it corresponding to each set of oil inlet holes 21 and oil outlet holes 22, and the oil distribution spindle 50 passes through the shaft hole 23, with two oil passage holes 51 on the oil distribution spindle 50 corresponding to the positions of the oil inlet holes 21 and oil outlet holes 22 of the oil distribution ring 20 respectively; a gear disk 60 is fixedly provided on the side of the housing 10 near the oil distribution spindle 50, the gear disk 60 is coaxially arranged with the central shaft 40, and the inner ring teeth of the gear disk 60 form a synchronous meshing transmission with the drive gears 52 of each oil distribution spindle 50.

[0041] The working principle of this embodiment is the same as that of the first embodiment. The core difference lies in the power transmission path: when dispensing oil to the hydraulic motor, the oil pushes the plunger 32 to abut against the inner cam ring 42, driving the housing 10 to rotate and output power; when dispensing oil to the hydraulic pump, the external power drives the housing 10 to rotate, and the inner cam ring 42 squeezes the plunger 32 to reciprocate to achieve oil suction and discharge. The on / off switching of the oil dispensing spindle 50 is still precisely controlled by the meshing transmission of the gear disc 60 and the gear.

[0042] This embodiment adopts a "fixed-axis rotating shell" structure. The shell 10 serves as the rotating power component, with a large bearing area, making it suitable for heavy-duty scenarios such as the main drive of mining machinery and the propulsion system of ships. The internal meshing of the inner ring teeth and gears of the gear disc 60, with the transmission structure integrated inside the shell 10, provides excellent protection and can adapt to harsh working conditions with high dust and humidity, extending the maintenance cycle. The oil distribution ring 30 rotates synchronously with the shell 10, and the centrifugal force can assist in the discharge of oil, which is beneficial for controlling the flow fluctuation under high flow conditions and improving the stability of oil distribution. The force direction of the plunger 32 is consistent with the rotational tangent direction of the shell 10, resulting in high power conversion efficiency.

[0043] Preferably, the plunger 32 is provided with a roller 33 at its tail end. The roller 33 rolls to connect the contour surface of the cam ring, converting sliding friction into rolling friction, effectively reducing the coefficient of friction, reducing power loss, significantly reducing the operating temperature of the equipment, and improving the oil distribution efficiency and service life.

[0044] Preferably, the oil passages 51 on the oil distribution mandrel 50 are all designed as elongated holes, which not only meet the requirements of large-flow oil distribution but also effectively prevent mutual interference between the inlet and outlet oil. A retaining ring 53 is provided at the tail end of the oil distribution mandrel 50 to axially limit the oil distribution mandrel 50 and prevent axial displacement during rotation.

[0045] Preferably, a front cover 15 and a rear cover 16 are respectively installed on both sides of the housing 10. A sealing ring 17 is embedded at the contact point between the housing 10 and the front cover 15 and the rear cover 16 to seal the internal structure and prevent external impurities from entering and internal oil from leaking. The two ends of the central shaft 40 are assembled on the housing 10 through bearings 18, so that the front cover 15 and the rear cover 16 can rotatably support the central shaft 40 through the bearings 18, ensuring flexible rotation between the rotor and the end cover and reducing the overall running resistance.

[0046] Through the above structural design, the oil distribution device can work stably under high pressure and high flow conditions, and has the advantages of good sealing effect, low friction, long service life and convenient maintenance. It can be adapted to hydraulic motors and hydraulic pumps with high flow and pressure requirements.

[0047] The above-disclosed embodiments are merely specific examples of the present invention, but the present invention is not limited thereto. For those skilled in the art, any modifications made without departing from the principles of the present invention should be considered to fall within the scope of protection of the present invention.

Claims

1. A high-pressure, high-flow-rate rotary oil distribution device, characterized in that: The system includes a stator and a mover that rotatably connects to the stator. The stator integrates an oil inlet channel and an oil outlet channel for the input and output of oil medium. Several oil distribution chambers (31) are evenly distributed radially on the stator. Each oil distribution chamber (31) is selectively connected to the oil inlet channel and the oil outlet channel, and a plunger (32) is slidably assembled in the oil distribution chamber (31). An oil distribution mandrel (50) is provided through the stator along the axial direction. The oil distribution mandrel (50) has an oil passage hole (51) corresponding to the oil inlet channel and the oil outlet channel, and the two oil passage holes (51) are parallel to each other along the axial direction of the oil distribution mandrel (50). The oil distribution spindle (50) is arranged and arranged perpendicularly to each other at a radial angle of 90°. The front end of the oil distribution spindle (50) is fixedly connected to a drive gear (52). The oil distribution spindle (50) is driven to rotate through gear transmission, so that the two oil passages (51) alternately form a periodic on-off engagement with the oil inlet channel and the oil outlet channel. A cam ring is provided on the moving part corresponding to the position of each plunger (32). The curved profile surface of the cam ring abuts against the tail end of the plunger (32). A gear disk (60) is fixedly provided on the moving part coaxially. The ring teeth of the gear disk (60) mesh with the drive gear (52) on the oil distribution spindle (50). The stator includes a housing (10), with an oil inlet (11) and an oil outlet (12) on the outer circumferential surface of the housing (10). The inner wall of the housing (10) is provided with an oil inlet groove (13) and an oil outlet groove (14) respectively connecting the oil inlet (11) and the oil outlet (12). An oil distribution ring (20) is sealed within the inner diameter of the housing (10). The outer circumferential surface of the oil distribution ring (20) is provided with several oil inlet holes (21) and oil outlet holes (22) respectively connecting the oil inlet groove (13) and the oil outlet groove (14). An oil distribution ring (30) is sealed within the inner diameter of the oil distribution ring (20). The oil distribution ring (30) is uniformly machined with several oil distribution cavities (31) along the radial direction. Each oil distribution cavity (31) corresponds one-to-one with the oil inlet hole (21) and the oil outlet hole (22) of the oil distribution ring (20). A sliding device is installed within the oil distribution cavity (31). Equipped with plungers (32); the mover includes a central shaft (40) that rotates to connect the end cap of the housing (10), and an outer cam ring (41) is fixedly provided on the central shaft (40) corresponding to the position of each plunger (32), with the tail end of each plunger (32) abutting against the contour surface of the outer cam ring (41); the oil distribution ring (20) has a shaft hole (23) corresponding to each set of oil inlet hole (21) and oil outlet hole (22), and the oil distribution spindle (50) passes through the shaft hole (23), with two oil passage holes (51) on the oil distribution spindle (50) corresponding to the positions of the oil inlet hole (21) and oil outlet hole (22) of the oil distribution ring (20); a gear plate (60) is fixedly provided at one end of the central shaft (40) near the oil distribution spindle (50), and the outer ring teeth of the gear plate (60) mesh with the drive gear (52) of each oil distribution spindle (50); Or the stator includes a fixedly mounted central shaft (40), the shaft body of which is machined with an oil inlet (11) and an oil outlet (12). The outer circular surface of the central shaft (40) is provided with an oil inlet groove (13) and an oil outlet groove (14) respectively connecting the oil inlet (11) and the oil outlet (12) along the circumferential direction. The outer diameter of the central shaft (40) is sealed with an oil distribution ring (20). The outer circle of the oil distribution ring (20) is provided with a plurality of oil inlet holes (21) and oil outlet holes (22) respectively connecting the oil inlet groove (13) and the oil outlet groove (14). The outer diameter of the oil distribution ring (20) is sealed with an oil distribution ring (30). The oil distribution ring (30) is uniformly machined with a plurality of oil distribution cavities (31) along the radial direction. Each oil distribution cavity (31) corresponds one-to-one with the oil inlet hole (21) and the oil outlet hole (22) of the oil distribution ring (20). 31) A plunger (32) is slidably mounted inside; the mover includes a housing (10) that is rotatably connected to the central shaft (40), and an inner cam ring (42) is provided on the inner wall of the housing (10) corresponding to each plunger (32), and the tail end of the plunger (32) abuts against the contour surface of the inner cam ring (42); the oil distribution ring (20) is machined with a shaft hole (23) corresponding to each set of oil inlet hole (21) and oil outlet hole (22), and the oil distribution spindle (50) passes through the shaft hole (23), and the two oil passage holes (51) on the oil distribution spindle (50) correspond to the positions of the oil inlet hole (21) and oil outlet hole (22) of the oil distribution ring (20) respectively; a gear plate (60) is fixedly provided on the side of the housing (10) near the oil distribution spindle (50), and the inner ring teeth of the gear plate (60) mesh with the drive gear (52) of each oil distribution spindle (50) for transmission.

2. The high-pressure, high-flow-rate rotary oil distribution device according to claim 1, characterized in that: The plunger (32) is provided with a roller (33) at its tail end, and the roller (33) rolls the contour surface of the cam ring.

3. The high-pressure, high-flow-rate rotary oil distribution device according to claim 1, characterized in that: The oil passage holes (51) on the oil distribution mandrel (50) are all designed as elongated holes.

4. The high-pressure, high-flow-rate rotary oil distribution device according to claim 1, characterized in that: The oil distribution mandrel (50) is provided with a retaining ring (53) at its tail end to limit the axial movement of the oil distribution mandrel (50).

5. The high-pressure, high-flow-rate rotary oil distribution device according to claim 1, characterized in that: The front cover (15) and the rear cover (16) are respectively installed on both sides of the housing (10). A sealing ring (17) is embedded at the joint between the housing (10) and the front cover (15) and the rear cover (16) to seal the internal structure.

6. The high-pressure, high-flow-rate rotary oil distribution device according to claim 1, characterized in that: The two ends of the central shaft (40) are mounted on the housing (10) via bearings (18).

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