CN217206717U

CN217206717U - End face flow distribution cycloid hydraulic motor

Info

Publication number: CN217206717U
Application number: CN202220503487.5U
Authority: CN
Inventors: 盛伟; 阚亚威; 卞则东; 赵玉
Original assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Current assignee: ZHENJIANG DALI HYDRAULIC MOTOR CO Ltd
Priority date: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-08-16
Anticipated expiration: 2032-03-08

Abstract

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to a terminal surface distribution cycloid hydraulic motor. The utility model discloses a terminal surface distribution cycloid hydraulic motor comprises body shell, the vice and the back lid of rotating stator of bolted connection in proper order, be equipped with the connecting plate between body shell and the rotating stator is vice, be equipped with first seal assembly between body shell right side and the connecting plate, be equipped with second seal assembly between connecting plate and the vice left side of rotating stator, be equipped with the distribution backup pad between the vice and the back lid of rotating stator, be equipped with third seal assembly between the vice right side of rotating stator and the distribution backup pad, the left side of back lid is inwards seted up and is held the distribution recess of distribution assembly, be equipped with fourth seal assembly between the inner wall of distribution recess and the distribution assembly, through multiunit seal assembly, promote the leakproofness between each part contact surface, improve the overall leakproofness of motor; set up first, second and third between the contact surface of the corresponding part in motor draining return circuit and prevent leaking the sealing washer, further prevent the oil leak, promote the whole leakproofness of motor.

Description

End face flow distribution cycloid hydraulic motor

Technical Field

The utility model belongs to the technical field of the hydraulic motor technique and specifically relates to a terminal surface distribution cycloid hydraulic motor.

Background

A gerotor hydraulic motor is a device that converts hydraulic energy into mechanical energy, often used as a hydraulic actuator. The cycloid hydraulic motor is widely applied due to the characteristics of simple structure, wide rotating speed range and large torque, and generally comprises an end surface flow distribution cycloid hydraulic motor and a shaft flow distribution cycloid hydraulic motor, wherein the end surface flow distribution cycloid hydraulic motor comprises a rear cover, a rotating stator pair, a flow distribution assembly, a body shell, an output shaft, an output linkage shaft and a flow distribution linkage shaft, a pressure oil inlet and an oil return port are formed in the upper surface of the rear cover, plane flow distribution is performed through a flow distribution structure, outer gear teeth of the output linkage shaft are meshed with an inner gear of a rotor in the rotating stator pair, and the other end of the output linkage shaft is in splined connection with the output shaft.

Hydraulic oil enters the flow distribution assembly from the oil inlet, the flow distribution assembly distributes oil to the meshing cavity of the rotating stator pair, and when pressure oil enters and returns oil, under the radial force borne by the output shaft and the rotating acting force of the internal linkage shaft and the flow distribution linkage shaft, small gaps are easy to occur among matching surfaces of the rear cover, the rotating stator pair and the body shell, so that oil leakage of the motor is caused, and the overall sealing performance and the service life of the end face flow distribution cycloid hydraulic motor are influenced.

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, an end face flow distribution cycloid hydraulic motor is provided, and the problems that when hydraulic oil enters a flow distribution assembly from an oil inlet, the flow distribution assembly distributes oil to a meshing cavity of a rotating stator pair, and when pressure oil enters and returns, under the radial force borne by an output shaft and the rotating acting force of an internal linkage shaft and a flow distribution linkage shaft, small gaps are easy to occur among matching surfaces of a rear cover, the rotating stator pair and a body shell, so that oil leakage of the motor is caused, and the overall sealing performance and the service life of the end face flow distribution cycloid hydraulic motor are influenced are solved.

The utility model provides a technical scheme that its technical problem adopted is: the end face flow distribution cycloid hydraulic motor comprises a body shell, a rotating stator pair and a rear cover which are sequentially connected through bolts, wherein an output shaft is arranged in the body shell, the output shaft is in meshing transmission with the rotating stator pair through an output linkage shaft, a flow distribution assembly is arranged in the rear cover, the flow distribution assembly is in linkage with the rotating stator pair through the flow distribution linkage shaft, a connecting plate is arranged between the body shell and the rotating stator pair, a first sealing assembly is arranged between the right side of the body shell and the connecting plate, a second sealing assembly is arranged between the connecting plate and the rotating stator pair left side, a flow distribution supporting plate is arranged between the rotating stator pair and the rear cover, a third sealing assembly is arranged between the rotating stator pair right side and the flow distribution supporting plate, a flow distribution groove for accommodating the flow distribution assembly is inwards formed in the left side of the rear cover, and a fourth sealing assembly is arranged between the inner wall of the flow distribution groove and the flow distribution assembly.

The middle part of body shell right flank has seted up left bearing seal chamber, right bearing seal chamber has coaxially been seted up to the left surface of connecting plate, left bearing seal chamber and right bearing seal chamber enclose to close and be trapezoidal axle seal chamber for the cross-section, first seal assembly include first O type circle and butterfly seal circle, the butterfly seal circle in place the axle seal chamber, butterfly seal circle and output universal driving shaft cup joint and be connected, first seal groove has all been seted up to the both sides of connecting plate, first O type circle in place the left first seal groove of connecting plate.

Second seal assembly include second O type circle and first leakage-proof sealing washer, second O type circle in place the first seal groove on connecting plate right side in, the right side of connecting plate is close to bottom surface department and has seted up first draining groove, first leakage-proof sealing washer in place first draining groove in, the interior bottom surface slant of first draining groove has seted up the draining hole.

Third seal assembly include third O type circle and second and prevent leaking the sealing washer, the second seal groove has been seted up to the left surface of joining in marriage a class backup pad, third O type circle in place the second seal groove in, the right side of rotor pair is close to bottom surface department and has seted up the second draining groove, the second prevent leaking the sealing washer in place the second draining groove in, the interior bottom surface of second draining groove has inwards seted up first draining water conservancy diversion hole.

And a third oil drainage groove is formed in the right side of the flow distribution supporting plate, close to the bottom surface, a third anti-leakage sealing ring is arranged in the third oil drainage groove, and a second oil drainage flow guide hole is formed in the inner bottom surface of the third oil drainage groove inwards.

The flow distribution assembly comprises a flow distribution plate and a flow distribution pressure plate sleeved with the flow distribution plate, the flow distribution plate and the flow distribution pressure plate are arranged in the flow distribution groove, the flow distribution pressure plate is sleeved on a rotating shaft in the middle of the inner bottom surface of the flow distribution groove, and a wave spring is arranged on the inner connecting surface of the flow distribution pressure plate and the flow distribution groove.

The outer annular surface of the flow distribution pressure plate is sequentially provided with a third sealing groove and a fourth sealing groove from left to right, the fourth sealing assembly comprises a fourth O-shaped ring and a fifth O-shaped ring, the fourth O-shaped ring is sleeved on the third sealing groove, and the fifth O-shaped ring is sleeved on the fourth sealing groove.

The utility model has the advantages that:

(1) the utility model discloses a terminal surface distribution cycloid hydraulic motor comprises body shell, the vice and the back lid of rotating stator of bolted connection in proper order, back lid inside is provided with the distribution subassembly, be provided with the connecting plate between body shell and the rotating stator pair, be provided with first seal assembly between body shell right side and the connecting plate, be provided with the second seal assembly between connecting plate and the vice left side of rotating stator, be provided with the distribution backup pad between the vice and the back lid of rotating stator, be provided with the third seal assembly between vice right side of rotating stator and the distribution backup pad, the left side of back lid is inwards seted up and is held the distribution recess of distribution subassembly, be provided with the fourth seal assembly between the inner wall of distribution recess and the distribution subassembly, through multiunit seal assembly, promote the leakproofness between each part contact surface, improve the whole leakproofness of motor;

(2) set up first sealing washer, second and prevent leaking the sealing washer and the third sealing washer of preventing leaking between the contact surface that the motor draining return circuit corresponds the part, further prevent the oil leak, promote the whole leakproofness of motor.

Drawings

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

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

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 3 is an exploded view of the fourth seal assembly of the present invention.

Fig. 4 is a right side view of the present invention.

In the figure, 1, a body shell, 2, a rotor stator pair, 3, a rear cover, 4, an output shaft, 5, an output linkage shaft, 6, a flow distribution assembly, 7, a flow distribution linkage shaft, 8, a connecting plate, 9, a first sealing assembly, 10, a second sealing assembly, 11, a flow distribution supporting plate, 12, a third sealing assembly, 13, a flow distribution groove, 14, a fourth sealing assembly, 15, a shaft sealing cavity, 16, a first O-shaped ring, 17, a butterfly-shaped sealing ring, 18, a first sealing groove, 19, a second O-shaped ring, 20, a first leakage-proof sealing ring, 21, a first leakage groove, 22, a leakage hole, 23, a third O-shaped ring, 24, a second leakage-proof sealing ring, 25, a second sealing groove, 26, a second leakage groove, 27, a first leakage flow guide hole, 28, a third leakage groove, 29, a third leakage-proof sealing ring, 30, a second leakage guide hole, 31, a flow distribution disc, 32, a wave-shaped spring, 34. third seal groove, 35, fourth seal groove, 36, fourth O-ring, 37, fifth O-ring.

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.

An end face flow distribution cycloid hydraulic motor shown in figures 1, 2, 3 and 4 comprises a body shell 1, a rotor-stator pair 2 and a rear cover 3 which are sequentially connected through bolts, an output shaft 4 is arranged in the body shell 1, the output shaft 4 is in meshing transmission with the rotor-stator pair 2 through an output linkage shaft 5, a flow distribution component 6 is arranged in the rear cover 3, the flow distribution component 6 is linked with the rotor-stator pair 2 through a flow distribution linkage shaft 7, a connecting plate 8 is arranged between the body shell 1 and the rotor-stator pair 2, a first sealing component 9 is arranged between the right side of the body shell 1 and the connecting plate 8, a second sealing component 10 is arranged between the connecting plate 8 and the left side of the rotor-stator pair 2, a flow distribution supporting plate 11 is arranged between the rotor-stator pair 2 and the rear cover 3, a third sealing component 12 is arranged between the right side of the rotor-stator pair 2 and the flow distribution supporting plate 11, a flow distribution groove 13 for accommodating the flow distribution component 6 is inwards arranged on the left side of the rear cover 3, a fourth sealing assembly 14 is arranged between the inner wall of the flow distribution groove 13 and the flow distribution assembly 6, and the sealing performance between the contact surfaces of all parts is improved through multiple groups of sealing assemblies, so that the overall sealing performance of the motor is improved.

As shown in fig. 2, a left shaft seal cavity is formed in the middle of the right side surface of the body shell 1, a right shaft seal cavity is coaxially formed in the left side surface of the connecting plate 8, the left shaft seal cavity and the right shaft seal cavity are enclosed to form a shaft seal cavity 15 with a trapezoidal cross section, the first sealing assembly 9 comprises a first O-ring 16 and a butterfly sealing ring 17, the shaft seal cavity 15 is arranged in the butterfly sealing ring 17, the butterfly sealing ring 17 is connected with the output linkage shaft 5 in a sleeved mode, first sealing grooves 18 are formed in the two sides of the connecting plate 8, the first O-ring 16 is arranged in the first sealing groove 18 in the left side of the connecting plate 8, the butterfly sealing ring 17 and the first O-ring 16 are used in a combined mode, and oil leakage of the motor caused by leakage of an oil path can be effectively prevented.

Further, in order to prevent oil leakage between contact surfaces and influence the overall sealing performance of the motor, the second sealing assembly 10 comprises a second O-ring 19 and a first anti-leakage sealing ring 20, the second O-ring 19 is arranged in a first sealing groove 18 on the right side of the connecting plate 8, a first oil drainage groove 21 is formed in the position, close to the bottom surface, of the right side of the connecting plate 8, the first anti-leakage sealing ring 20 is arranged in the first oil drainage groove 21, and an oil drainage hole 22 is formed in the inner bottom surface of the first oil drainage groove 21 in an inward inclined mode.

Further, in order to prevent oil leakage between the contact surfaces and influence the overall sealing performance of the motor, the third sealing assembly 12 includes a third O-ring 23 and a second leakage-proof sealing ring 24, a second sealing groove 25 is formed in the left side surface of the flow distribution supporting plate 11, and the third O-ring 23 is disposed in the second sealing groove 25.

In order to further improve the sealing performance between the contact surfaces of the motor parts, grooves can be formed in the contact surfaces of the right side surface of the body shell 1 and the first O-shaped ring 16, the left side surface of the rotor-stator pair 2 and the second O-shaped ring 19, and the right side surface of the rotor-stator pair 2 and the third O-shaped ring 23, then O-shaped rings with O-shaped or H-shaped cross sections are selected, and the first sealing groove 18 and the second sealing groove 25 are coaxially formed, so that the O-shaped rings can be purchased in batches conveniently, and the production cost is reduced.

Further, in order to prevent oil leakage between the contact surfaces of the oil drainage channels and improve the overall sealing performance of the motor, a second oil drainage groove 26 is formed in the position, close to the bottom surface, of the right side of the rotor-stator pair 2, a second oil drainage groove 26 is formed in the second anti-leakage sealing ring 24, and a first oil drainage guide hole 27 is formed in the inner bottom surface of the second oil drainage groove 26 inwards.

Further, in order to prevent oil leakage between contact surfaces of the oil drainage channels and improve the overall sealing performance of the motor, a third oil drainage groove 28 is formed in the position, close to the bottom surface, of the right side of the flow distribution supporting plate 11, a third leakage prevention sealing ring 29 is arranged in the third oil drainage groove 28, and a second oil drainage guide hole 30 is formed in the inner bottom surface of the third oil drainage groove 28 inwards.

In order to improve the sealing performance and reduce the production cost, the first leakage-proof sealing ring 20, the second leakage-proof sealing ring 24 and the third leakage-proof sealing ring 29 have the same size, so that the leakage-proof sealing rings are convenient to purchase in batches.

In order to facilitate the assembly of O type circle and O type circle corresponding position part, promote the plane degree of motor after the assembly, can set up a plurality of location archs on the surface of O type circle, then set up on the installation opposite face of O type circle with the protruding assorted locating hole in location, during the part equipment, only need the location protruding align with the locating hole can, after the assembly like this, can also effectively avoid the installation in-process when the plane degree of motor is guaranteed, because of the sealed O type circle of the contact surface that the inhomogeneous leads to of application of force shifts or warp, promote the yield of product.

Further, in order to improve the sealing performance of the motor, the flow distribution assembly 6 includes a flow distribution plate 31 and a flow distribution pressure plate 32 sleeved with the flow distribution plate 31, the flow distribution plate 31 and the flow distribution pressure plate 32 are embedded in the flow distribution groove 13, the flow distribution pressure plate 32 is sleeved on a rotating shaft in the middle of the inner bottom surface of the flow distribution groove 13, and a wave spring 33 is arranged at the inner contact surface of the flow distribution pressure plate 32 and the flow distribution groove 13.

As shown in fig. 3, a third sealing groove 34 and a fourth sealing groove 35 are sequentially formed in the outer annular surface of the flow distribution pressure plate 32 from left to right, the fourth sealing assembly 14 includes a fourth O-ring 36 and a fifth O-ring 37, the third sealing groove 34 is sleeved with the fourth O-ring 36, and the fourth sealing groove 35 is sleeved with the fifth O-ring 37.

The end face flow distribution cycloid hydraulic motor of the utility model consists of a body shell 1, a rotor pair 2 and a rear cover 3 which are sequentially connected by bolts, a flow distribution component 6 is arranged in the rear cover 3, a connecting plate 8 is arranged between the body shell 1 and the rotor pair 2, a first sealing component 9 is arranged between the right side of the body shell 1 and the connecting plate 8, a second sealing component 10 is arranged between the connecting plate 8 and the left side of the rotor pair 2, a flow distribution supporting plate 11 is arranged between the rotor pair 2 and the rear cover 3, a third sealing component 12 is arranged between the right side of the rotor pair 2 and the flow distribution supporting plate 11, a flow distribution groove 13 for accommodating the flow distribution component 6 is inwards arranged at the left side of the rear cover 3, and a fourth sealing component 14 is arranged between the inner wall of the flow distribution groove 13 and the flow distribution component 6, through the multiple groups of sealing assemblies, the sealing performance between the contact surfaces of all parts is improved, and the overall sealing performance of the motor is improved; a first leakage-proof sealing ring 20, a second leakage-proof sealing ring 24 and a third leakage-proof sealing ring 29 are arranged between the contact surfaces of the corresponding parts of the motor oil drainage loop, so that oil leakage is further prevented, and the integral sealing performance of the motor is improved.

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 specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides an end surface flow distribution cycloid hydraulic motor, includes bolted connection's body shell (1) in proper order, changes vice (2) of stator and back lid (3), and body shell (1) inside is equipped with output shaft (4), and output shaft (4) are through output universal driving shaft (5) and the vice (2) meshing transmission of commentaries on classics stator, and back lid (3) inside is provided with flow distribution subassembly (6), and flow distribution subassembly (6) and change vice (2) of stator are through flow distribution universal driving shaft (7) linkage, characterized by: be provided with connecting plate (8) between body shell (1) and the stator pair (2) that changes, be provided with first seal assembly (9) between body shell (1) right side and connecting plate (8), be provided with second seal assembly (10) between connecting plate (8) and the vice (2) left side of stator that changes, it flows backup pad (11) to be provided with between the vice (2) of stator that changes and back lid (3), it is provided with third seal assembly (12) to change to be provided with between vice (2) right side of stator and the backup pad that flows (11), the left side of back lid (3) is inwards seted up and is held distributing a class recess (13) that distribute a class subassembly (6), it is provided with fourth seal assembly (14) to distribute the class recess (13) inner wall and distribute a class subassembly (6) between.

2. An end face port cycloid hydraulic motor as claimed in claim 1, characterized in that: the middle part of body shell (1) right flank has seted up left bearing seal chamber, right bearing seal chamber has coaxially been seted up to the left surface of connecting plate (8), left bearing seal chamber and right bearing seal chamber enclose to close and be trapezoidal axle seal chamber (15) for the cross-section, first seal assembly (9) including first O type circle (16) and butterfly seal circle (17), butterfly seal circle (17) place axle seal chamber (15) in, butterfly seal circle (17) and output universal driving shaft (5) cup joint and be connected, first seal groove (18) have all been seted up to the both sides of connecting plate (8), first O type circle (16) place left first seal groove (18) of connecting plate (8) in.

3. An end face port cycloid hydraulic motor as claimed in claim 2, characterized in that: second seal assembly (10) include second O type circle (19) and first sealing washer (20) of preventing leaking, second O type circle (19) place first seal groove (18) on connecting plate (8) right side in, the right side of connecting plate (8) is close to bottom surface department and has seted up first draining groove (21), first sealing washer (20) of preventing leaking place first draining groove (21) in, draining hole (22) have been seted up to the inside slant of interior bottom surface of first draining groove (21).

4. An end face port cycloid hydraulic motor as claimed in claim 1, characterized in that: third seal assembly (12) prevent leaking sealing washer (24) including third O type circle (23) and second, second seal groove (25) have been seted up to the left surface of distribution backup pad (11), third O type circle (23) in place second seal groove (25), the right side of rotor-stator pair (2) is close to bottom surface department and has seted up second draining groove (26), second prevent leaking sealing washer (24) in place second draining groove (26), first draining water conservancy diversion hole (27) have inwards been seted up to the interior bottom surface of second draining groove (26).

5. An end face port cycloid hydraulic motor as claimed in claim 1, characterized in that: and a third oil drainage groove (28) is formed in the position, close to the bottom surface, of the right side of the flow distribution supporting plate (11), a third anti-leakage sealing ring (29) is arranged in the third oil drainage groove (28), and a second oil drainage diversion hole (30) is formed in the inner bottom surface of the third oil drainage groove (28) inwards.

6. An end face port cycloid hydraulic motor as claimed in claim 1, characterized in that: the flow distribution assembly (6) comprises a flow distribution plate (31) and a flow distribution pressure plate (32) sleeved with the flow distribution plate (31), the flow distribution plate (31) and the flow distribution pressure plate (32) are arranged in the flow distribution groove (13), the flow distribution pressure plate (32) is sleeved on a rotating shaft in the middle of the inner bottom surface of the flow distribution groove (13), and a wave spring (33) is arranged on the inner connecting surface of the flow distribution pressure plate (32) and the flow distribution groove (13).

7. An end face port cycloid hydraulic motor as claimed in claim 6, characterized in that: the outer annular surface of the flow distribution pressure plate (32) is sequentially provided with a third sealing groove (34) and a fourth sealing groove (35) from left to right, the fourth sealing assembly (14) comprises a fourth O-shaped ring (36) and a fifth O-shaped ring (37), the fourth O-shaped ring (36) is sleeved on the third sealing groove (34), and the fifth O-shaped ring (37) is sleeved on the fourth sealing groove (35).