CN217735651U

CN217735651U - Axial flow distribution cycloid hydraulic motor

Info

Publication number: CN217735651U
Application number: CN202220576548.0U
Authority: CN
Inventors: 李璐; 阚亚威; 赵玉; 吴方明
Original assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Current assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-11-04
Anticipated expiration: 2032-03-16

Abstract

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to an axle distribution cycloid hydraulic motor. The utility model discloses an axial flow distribution cycloid hydraulic motor comprises a rear cover, a rotating stator pair, a body shell and a front cover, wherein the upper surface of the rear cover is provided with an oil port, a rear separation disc is arranged between the rear cover and the rotating stator pair, the side surface of the rear separation disc is provided with a first oil column, the first oil column is respectively inserted into oil guide holes corresponding to the rotating stator pair of the rear cover, a front separation disc is arranged between the rotating stator pair and the body shell, the side surface of the front separation disc is provided with a second oil column, the second oil column is respectively inserted into the oil guide holes corresponding to the rotating stator pair and the body shell, a pipeline type oil path reduces oil pressure loss and improves motor efficiency; the sealing part of the sealing ring is embedded into the second annular groove, so that the sealing performance of an oil way is further enhanced, and the motor efficiency is improved; the draining mouth has been seted up to the bottom surface of back lid, and the draining hole has been seted up in the left side of back lid, and the draining water conservancy diversion hole has been seted up to the side of back partition dish, and the draining passageway can be let out when draining pressure is big, avoids the motor oil leak.

Description

Axial flow distribution cycloid hydraulic motor

Technical Field

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to an axle distribution cycloid hydraulic motor.

Background

The cycloid hydraulic motor is a device for converting hydraulic energy into mechanical energy, and has the characteristics of simple structure, wide rotating speed range and large torque, so that the cycloid hydraulic motor is widely applied, and is generally divided into an end surface flow distribution cycloid hydraulic motor and an axial flow distribution cycloid hydraulic motor, wherein the axial flow distribution cycloid hydraulic motor comprises a rear cover, a rear partition disc, a rotating stator pair, a front partition disc, a body shell, an output shaft, a linkage shaft and a front cover.

When the shaft flow distribution motor works, pressure oil enters the rear cover from an oil inlet, flows into an oil inlet groove of a flow distribution groove on the output shaft through the rear partition plate, the rotating stator pair, the front partition plate and the body shell, flows through the front partition plate through a hole in the body shell in the same radial direction as the flow distribution groove, enters a meshing cavity of the rotating stator pair to drive a rotor of the rotating stator pair to rotate, the pressure oil flows into an oil return groove of the flow distribution groove on the output shaft after passing through the front partition plate and the body shell, and the hydraulic oil of the oil return groove finally enters an oil return opening of the rear cover along with the rotation of the output shaft through the body shell, the front partition plate, the rotating stator pair and the rear partition plate.

When the cycloid hydraulic motor is in oil inlet and oil return, because the rear cover is in surface-to-surface contact with the rear partition plate, the rear partition plate is in surface-to-surface contact with the rotating stator pair, the rotating stator pair is in surface-to-surface contact with the front partition plate, and the front partition plate is in surface-to-surface contact with the body shell, after pressure oil enters the motor, a small amount of oil leakage is generated between the surfaces of related structural members, the oil pressure loss reduces the efficiency of the motor, and meanwhile, the oil leakage is caused by overlarge oil leakage pressure.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the background technology, the axial flow distribution cycloid hydraulic motor is provided, and the problems that the oil leakage of the motor occurs due to the fact that the back cover and the back partition plate, the back partition plate and the rotor and stator pair, the rotor and stator pair and the front partition plate, and the front partition plate and the body shell are in surface-to-surface contact when the cycloid hydraulic motor is in oil inlet and oil return are solved, and after pressure oil enters the motor, a small amount of oil leakage exists between the surfaces of related structural members, the efficiency of the motor is reduced due to oil pressure loss, and meanwhile, the oil leakage of the motor is caused due to overlarge oil leakage pressure.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a cycloidal hydraulic motor of axle flow distribution, includes bolted connection's back lid, the vice, body shell and protecgulum of stator that changes in turn, is provided with the output shaft that extends the protecgulum in the body shell, and the universal driving shaft that meshes with the vice of stator that changes is cup jointed to the other end of output shaft, and the hydraulic fluid port has been seted up to the upper surface of back lid, back lid and change stator pair between be provided with the back deep bead, the side of back deep bead is provided with the first oil post that extends its both sides, the left side of back lid seted up with the inside first oil guide hole that communicates of hydraulic fluid port, first oil post and first oil guide hole plug-in connection, the vice side of front deep bead be provided with the second oil post that extends its both sides, the second oil post and second oil guide hole plug-in connection, the inside of body shell seted up the third oil guide hole, the second oil post and third oil guide hole plug-in connection.

The front surfaces of the first oil column and the second oil column are provided with oil guide through holes, the outer diameters of the first oil column and the second oil column are the same, and the inner diameters of the first oil guide hole, the second oil guide hole and the third oil guide hole are the same.

First annular grooves are formed in the outer side faces, located on the oil guide through holes, of the first oil column and the second oil column, and sealing rings are arranged in the first annular grooves.

The sealing ring comprises a fixing part and a sealing part integrally connected with the fixing part, a plurality of extrusion springs are arranged on the bottom surface of the fixing part, the tail ends of the extrusion springs are fixedly connected with the inner bottom surface of the first annular groove at the corresponding position, and the cross section of the sealing part is semicircular.

The first oil guide hole, the second oil guide hole and the third oil guide hole are all countersunk head type openings, the inner diameter of a bottom hole of each countersunk head type opening is the same as that of the oil guide through hole, second annular grooves matched with the sealing parts are formed in the inner bottom surfaces of the countersunk head type openings, and the inner diameters of openings of the second annular grooves are the same as the outer diameters of the sealing parts.

An oil drainage port is formed in the bottom surface of the rear cover, an inner hexagonal plug is connected to the opening of the oil drainage port in a threaded mode, and an oil drainage hole communicated with the inside of the oil drainage port is formed in the left side of the rear cover.

And an oil drainage guide hole is formed in the side surface of the rear partition plate corresponding to the oil drainage hole.

The right side of protecgulum inwards has seted up the recess, be provided with the bearing seal in the recess, bearing seal and output shaft cup joint and be connected.

The utility model has the advantages that:

(1) The utility model discloses an axial flow distribution cycloid hydraulic motor comprises rear cover, the rotor pair, the body shell and the protecgulum that bolted connection in proper order, the hydraulic fluid port has been seted up to the upper surface of rear cover, be provided with back spacer disc between rear cover and the rotor pair, the side of back spacer disc is provided with the first oil column that extends its both sides, first oil column inserts the oil guide hole that rear cover and rotor pair correspond respectively, be provided with front spacer disc between rotor pair and the body shell, the side of front spacer disc is provided with the second oil column that extends its both sides, the second oil column inserts the oil guide hole that rotor pair and body shell correspond respectively, the oil circuit in the motor has been optimized to this structure, pipeline formula oil circuit has reduced the oil pressure loss, promoted motor efficiency;

(2) The sealing part of the sealing ring is embedded into the second annular groove in the oil guide hole at the corresponding position, so that the sealing property of the oil way is further enhanced, and the motor efficiency is improved;

(3) The oil drainage port has been seted up to the bottom surface of back lid, and the draining hole has been seted up in the left side of back lid, and the draining water conservancy diversion hole has been seted up to the side of back partition dish, and the draining passageway can be let out when draining pressure is big, avoids the motor oil leak.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is an assembled exploded view of the present invention.

Fig. 2 is a sectional view of the structure of the drawing of the present invention.

Fig. 3 is the assembly schematic diagram of the middle oil column and the corresponding oil guide hole.

In the drawing, 1, a rear cover, 2, a rotating stator pair, 3, a body shell, 4, a front cover, 5, an output shaft, 6, a linkage shaft, 7, an oil port, 8, a rear partition plate, 9, a first oil column, 10, a first oil guide hole, 11, a second oil guide hole, 12, a front partition plate, 13, a second oil column, 14, a third oil guide hole, 15, an oil guide through hole, 16, a first annular groove, 17, a sealing ring, 18, a fixing part, 19, a sealing part, 20, an extrusion spring, 21, a second annular groove, 22, an oil drainage port, 23, an inner hexagonal plug, 24, an oil drainage hole, 25, an oil drainage guide hole and 26 are arranged.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The cycloid hydraulic motor with the shaft flow distribution shown in fig. 1, fig. 2 and fig. 3 comprises a rear cover 1, a pair of rotating stators 2, a body shell 3 and a front cover 4 which are sequentially connected through bolts, wherein an output shaft 5 extending out of the front cover 4 is arranged in the body shell 3, a linkage shaft 6 meshed with the pair of rotating stators 2 is sleeved at the other end of the output shaft 5, an oil port 7 is formed in the upper surface of the rear cover 1, a rear partition disc 8 is arranged between the rear cover 1 and the pair of rotating stators 2, a first oil column 9 extending to two sides of the rear partition disc 8 is arranged on the side surface of the rear partition disc 8, a first oil guide hole 10 communicated with the inside of the oil port 7 is formed in the left side of the rear cover 1, the first oil column 9 is connected with the first oil guide hole 10 in an inserting manner, a second oil guide hole 11 is formed in the side surface of the pair of rotating stators 2, the first oil column 9 is connected with the second oil guide hole 11 in an inserting manner, a front partition disc 12 is arranged between the pair of rotating stators 2 and the body shell 3, a second oil column 13 extending to two sides of the front partition disc 12 is connected with each other in an inserting manner, a second oil guide hole 13 is formed in an inserting manner, a third oil guide hole 14 is formed in the inside of the body shell 3, and a third oil guide hole 13 is connected with a third oil guide hole 13.

As shown in fig. 1, two oil ports 7 are generally provided, so as to facilitate forward and reverse rotation of the cycloid hydraulic motor, and when the left oil port 7 is an oil inlet, the right oil port 7 is an oil return port.

During oil feeding, hydraulic oil enters an oil port 7 on the left side of the rear cover 1, enters a first oil column 9 at the left end of the side face of the rear partition plate 8 through a first oil guide hole 10 in a corresponding position on the side face of the rear cover 1, flows through a second oil guide hole 11 at the left end of the rotating stator pair 2, enters a second oil column 13 at the left end of the front partition plate 12, then enters an oil inlet groove of the output shaft 5 through the body shell 3, and flows through the front partition plate 12 through holes in the body shell 3 in the same radial direction as the oil inlet groove to enter an engagement cavity of the rotating stator pair 2 so as to drive a rotor of the rotating stator pair 2 to rotate.

During oil return, pressure oil flows into an oil return groove on the output shaft 5 from an engagement cavity of the rotating stator pair 2 through the front partition plate 12 and the body shell 3, hydraulic oil in the oil return groove rotates along with rotation of the output shaft 5, the hydraulic oil enters the second oil column 13 at the right end of the front partition plate 12 after passing through the body shell 3, flows through the second oil guide hole 11 at the right end of the rotating stator pair 2, enters the first oil column 9 at the right end of the rear partition plate 8, and finally returns to the oil port 7 at the right side of the rear cover 1 through the first oil guide hole 10 at the right end of the side face of the rear cover 1 to enter an external oil return system.

Wherein first oil column 9 and second oil column 13 can be the cylinder formula, also can be the rectangle, and the cylinder formula is convenient for produce and process and later stage sealing washer purchasable standard component in the picture, saves manufacturing cost.

Further, in order to facilitate installation and production, oil guide through holes 15 are formed in the front faces of the first oil column 9 and the second oil column 13, the outer diameters of the first oil column 9 and the second oil column 13 are the same, and the inner diameters of the first oil guide hole 10, the second oil guide hole 11 and the third oil guide hole 14 are the same.

Further, in order to improve the sealing performance of the oil path, a first annular groove 16 is formed in the outer side surface of the oil guiding through hole 15 of the first oil column 9 and the outer side surface of the second oil column 13, and a sealing ring 17 is arranged in the first annular groove 16.

Further, in order to prevent oil leakage of an oil path caused by aging of the sealing ring 17, the sealing ring 17 comprises a fixing portion 18 and a sealing portion 19 integrally connected with the fixing portion 18, a plurality of extrusion springs 20 are arranged on the bottom surface of the fixing portion 18, the tail ends of the extrusion springs 20 are fixedly connected with the inner bottom surface of the first annular groove 16 in the corresponding position, the cross section of the sealing portion 19 is semicircular, the first oil guide hole 10, the second oil guide hole 11 and the third oil guide hole 14 are countersunk holes, the inner diameter of the bottom hole of each countersunk hole is the same as the inner diameter of the oil guide through hole 15, a second annular groove 21 matched with the sealing portion 19 is formed in the inner bottom surface of each countersunk hole, and the inner diameter of the hole of the second annular groove 21 is the same as the outer diameter of the sealing portion 19.

As shown in fig. 3, after the motor is assembled, the sealing portion 19 is press-fitted into the second annular groove 21, and when the contact surface of the sealing portion 19 is degraded, the sealing portion 19 is still in contact with the inner groove surface of the second annular groove 21 by the pressing spring 20, thereby ensuring the sealing property between the oil column and the oil guide hole.

As shown in fig. 2, in order to prevent the motor from leaking oil due to excessive internal oil drainage pressure, an oil drainage port 22 is formed in the bottom surface of the rear cover 1, a hexagonal socket plug 23 is connected to the opening of the oil drainage port 22 through a screw thread, and an oil drainage hole 24 communicated with the inside of the oil drainage port 22 is formed in the left side of the rear cover 1.

Further, in order to facilitate oil drainage of the motor when the oil drainage pressure is too high, an oil drainage diversion hole 25 is formed in the side face of the rear partition plate 8 corresponding to the oil drainage hole 24.

Furthermore, in order to reduce the risk of oil leakage of the motor, a groove is formed inwards on the right side of the front cover 4, a shaft seal 26 is arranged in the groove, the shaft seal 26 is connected with the output shaft 5 in a sleeved mode, the shaft seal 26 capable of bearing different oil pressures is selected, and oil leakage of the motor caused by overlarge oil pressure can be effectively reduced.

The utility model discloses an axial flow distribution cycloid hydraulic motor comprises rear cover 1, the vice 2 of rotating stator, body shell 3 and protecgulum 4 bolted connection in proper order, the upper surface of rear cover 1 has seted up hydraulic fluid port 7, be provided with back spacer disc 8 between back cover 1 and the vice 2 of rotating stator, the side of back spacer disc 8 is provided with the first oil column 9 that extends its both sides, first oil column 9 inserts the oil guide hole that rear cover 1 and the vice 2 of rotating stator correspond respectively, be provided with preceding spacer disc 12 between the vice 2 of rotating stator and the body shell 3, the side of preceding spacer disc 12 is provided with the second oil column 13 that extends its both sides, second oil column 13 inserts the oil guide hole that the vice 2 of rotating stator corresponds with body shell 3 respectively, the oil circuit inside the motor has been optimized to this structure, the oil pressure loss has been reduced to the pipeline formula oil circuit, motor efficiency has been promoted; the sealing part 19 of the sealing ring 17 is embedded into the second annular groove 21 in the oil guide hole at the corresponding position, so that the sealing performance of the oil path is further enhanced, and the motor efficiency is improved; the bottom surface of back lid 1 has seted up draining mouth 22, and the draining hole 24 has been seted up on the left side of back lid 1, and draining water conservancy diversion hole 25 has been seted up to the side of back partition dish 8, and the draining passageway can be let out when draining pressure is big, avoids the motor oil leak.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an axial flow distribution cycloid hydraulic motor, is provided with output shaft (5) that extend protecgulum (4) including bolted connection's back lid (1), commentaries on classics stator pair (2), body shell (3) and protecgulum (4) in proper order in body shell (3), the other end of output shaft (5) cup joints universal driving shaft (6) with commentaries on classics stator pair (2) meshing, hydraulic fluid port (7), characterized by have been seted up to the upper surface of back lid (1): the oil-gas separation device is characterized in that a rear separation disc (8) is arranged between the rear cover (1) and the rotating stator pair (2), a first oil column (9) extending two sides of the rear separation disc (8) is arranged on the side face of the rear cover (1), a first oil guide hole (10) communicated with the oil port (7) is formed in the left side of the rear cover (1), the first oil column (9) is in plug-in connection with the first oil guide hole (10), a second oil guide hole (11) is formed in the side face of the rotating stator pair (2), the first oil column (9) is in plug-in connection with the second oil guide hole (11), a front separation disc (12) is arranged between the rotating stator pair (2) and the body shell (3), a second oil column (13) extending two sides of the front separation disc (12) is arranged on the side face of the front separation disc (13), the second oil column (13) is in plug-in connection with the second oil guide hole (11), a third oil guide hole (14) is formed in the inside of the plug-in connection body shell (3), and the second oil column (13) is connected with the third oil guide hole (14).

2. The axial flow cycloid hydraulic motor of claim 1, further comprising: the front surfaces of the first oil column (9) and the second oil column (13) are provided with oil guide through holes (15), the outer diameters of the first oil column (9) and the second oil column (13) are the same, and the inner diameters of the first oil guide hole (10), the second oil guide hole (11) and the third oil guide hole (14) are the same.

3. The axial flow cycloid hydraulic motor of claim 2, further comprising: first annular groove (16) have all been seted up on first oil column (9) and second oil column (13) lie in the lateral surface of leading oil through hole (15), first annular groove (16) in be provided with sealing washer (17).

4. The axial flow gerotor hydraulic motor of claim 3, further comprising: the sealing ring (17) comprises a fixing portion (18) and a sealing portion (19) integrally connected with the fixing portion (18), a plurality of extrusion springs (20) are arranged on the bottom surface of the fixing portion (18), the tail ends of the extrusion springs (20) are fixedly connected with the inner bottom surface of the first annular groove (16) in the corresponding position, and the cross section of the sealing portion (19) is semicircular.

5. The axial flow cycloid hydraulic motor of claim 4, further comprising: the first oil guide hole (10), the second oil guide hole (11) and the third oil guide hole (14) are countersunk holes, the inner diameter of a bottom hole of each countersunk hole is the same as that of the oil guide through hole (15), second annular grooves (21) matched with the sealing parts (19) are formed in the inner bottom surfaces of the countersunk holes, and the inner diameters of the holes of the second annular grooves (21) are the same as the outer diameters of the sealing parts (19).

6. The axial flow gerotor hydraulic motor of any one of claims 1-5, further comprising: an oil drainage port (22) is formed in the bottom surface of the rear cover (1), an inner hexagonal plug (23) is connected to the opening of the oil drainage port (22) in a threaded mode, and an oil drainage hole (24) communicated with the inside of the oil drainage port (22) is formed in the left side of the rear cover (1).

7. The axial flow cycloid hydraulic motor of claim 6, further comprising: and an oil drainage guide hole (25) is formed in the side surface of the rear partition disc (8) corresponding to the oil drainage hole (24).

8. The axial flow cycloid hydraulic motor of claim 7, wherein: a groove is formed in the right side of the front cover (4) inwards, a shaft seal (26) is arranged in the groove, and the shaft seal (26) is connected with the output shaft (5) in a sleeved mode.