CN219865323U

CN219865323U - Cycloid hydraulic motor

Info

Publication number: CN219865323U
Application number: CN202321362510.4U
Authority: CN
Inventors: 汪立平; 张明; 虞强
Original assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Current assignee: Jiangsu Hengli Hydraulic Technology Co Ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-10-20
Anticipated expiration: 2033-05-30

Abstract

The utility model discloses a cycloid hydraulic motor, comprising: the valve body and the shell are connected with one end of the valve body, a first groove is formed in one end, far away from the valve body, of the shell, and an elastic piece is arranged in the first groove; the linkage shaft is arranged in the shell, and one end of the linkage shaft is connected with the shell; the valve is connected with the shell, the valve sleeve is arranged on the linkage shaft, and the elastic piece is abutted with the valve; the rotor is connected with the other end of the linkage shaft; and the rotating assembly is connected with the shell through a bearing. According to the utility model, through improvement of the motor structure, the motor can bear larger radial load, output high torque and meet the requirements of more working conditions, and the elastic piece can generate pre-compression force on the distributing valve, so that leakage of hydraulic oil is reduced, and the working efficiency of the motor is improved.

Description

Cycloid hydraulic motor

Technical Field

The utility model relates to the technical field of hydraulic equipment, in particular to a cycloid hydraulic motor.

Background

A hydraulic motor is an actuator of a hydraulic system that converts the hydraulic pressure energy provided by a hydraulic pump into mechanical energy (torque and rotational speed) of its output shaft, the fluid being the medium of transmission force and movement. The hydraulic motor is mainly applied to the fields of injection molding machines, ships, lifting machines, engineering machines, construction machines, coal mine machines, mining machines, metallurgical machines, ship machines, petrochemical engineering, port machines and the like.

The cycloid hydraulic motor is a type of hydraulic motor, an inner gear ring of the cycloid hydraulic motor is fixedly connected with a shell, oil entering from an oil port pushes a rotor to revolve around a central point, and the slowly rotating rotor is driven to output through a spline shaft. The existing cycloid hydraulic motor mostly adopts a shaft rotation type structure (namely, a rotor rotates to drive an output shaft to rotate), so that the cycloid motor with the structure is small in radial load, large in size, large in installation space and incapable of meeting the requirements of users. Accordingly, there is a need for an improved construction of gerotor hydraulic motors.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems of the prior art.

Therefore, the cycloid hydraulic motor provided by the utility model can bear larger radial load by fixing the linkage shaft and the rotor and rotating the rotary assembly to output torque, so that different working condition requirements are met, and the elastic piece can provide a pre-compression force for the distributing valve to reduce oil leakage.

The technical scheme adopted for solving the technical problems is as follows: a gerotor hydraulic motor, comprising: the valve comprises a valve body and a shell, wherein the shell is connected with one end of the valve body, a first groove is formed in one end, far away from the valve body, of the shell, and an elastic piece is arranged in the first groove; the linkage shaft is arranged in the shell, and one end of the linkage shaft is connected with the shell; the valve is connected with the shell, the valve sleeve is arranged on the linkage shaft, and the elastic piece is abutted with the valve; the rotor is connected with the other end of the linkage shaft; and the rotating assembly is connected with the shell through a bearing.

Further, the rotating assembly includes: the rotary wheel is sleeved on the shell, the rotary wheel is connected with the shell through the bearing, the composite valve plate is sleeved on the linkage shaft, the composite valve plate is positioned between the valve and the rotor, the stator is sleeved on the rotor, a cavity is formed between the rotor and the stator, and the composite valve plate and the stator are fixedly connected with the rotary wheel through bolts.

Further, the rotating assembly further comprises: the balance disc is positioned between the rear cover and the stator, and bolts sequentially penetrate through the rear cover, the balance disc, the stator and the composite valve plate to be connected with the rotating wheel.

Further, an annular groove is formed in one end, close to the composite valve plate, of the valve.

Further, a first oil duct is formed in the valve body, a second oil duct is formed in the shell, a first oil cavity is formed in a gap between the distributing valve and the shell, the first oil duct is communicated with the second oil duct, the second oil duct is communicated with the first oil cavity, and the first oil cavity is communicated with the annular groove.

Further, the rotary wheel and the housing form a second oil chamber, and the bearing is installed in the second oil chamber.

Further, a third oil duct is further formed in the shell, a fourth oil duct is further formed in the valve body, the third oil duct is communicated with the second oil cavity, the fourth oil duct is communicated with the third oil duct, and the fourth oil duct is communicated with an oil drain hole in the valve body.

Further, a spline sleeve is arranged at one end, close to the valve body, in the shell, and one end of the linkage shaft is connected with the spline sleeve.

Further, the distributing valve is connected with the shell through a locating pin.

The utility model has the beneficial effects that through the improvement of the motor structure, the motor can bear larger radial load, output high torque and meet the requirements of more working conditions, and the elastic piece can generate pre-compression force on the distributing valve, thereby reducing the leakage of hydraulic oil and improving the working efficiency of the motor.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a cross-sectional view of the gerotor hydraulic motor of the present utility model.

Fig. 2 is a schematic view of the installation of the elastic member of the present utility model.

Fig. 3 is a schematic view of the third oil passage and the fourth oil passage of the present utility model.

Fig. 4 is a schematic view of the dowel of the present utility model.

Fig. 5 is a cross-sectional view of the rotor and stator of the present utility model.

Fig. 6 is another cross-sectional view of the gerotor hydraulic motor of the present utility model.

In the figure: 1. a valve body; 2. a housing; 3. a linkage shaft; 4. a flow distribution valve; 5. a rotor; 6. a rotating assembly; 7. a bearing; 8. an elastic member; 11. a first oil passage; 12. a fourth oil passage; 13. a sixth oil passage; 20. a positioning pin; 21. a first groove; 22. a second oil passage; 23. a third oil passage; 24. a spline sleeve; 25. an inner cavity; 26. a fifth oil passage; 41. an annular groove; 61. a rotating wheel; 62. a composite port plate; 63. a stator; 64. a balancing disk; 65. a rear cover; 66. a cavity; 91. a first oil chamber; 92. and a second oil chamber.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 6, the gerotor hydraulic motor of the present utility model includes: the valve body 1, the casing 2, the universal driving shaft 3, join in marriage flow valve 4, rotor 5 and rotating assembly 6, the casing 2 is connected with the one end of valve body 1, first recess 21 has been seted up to the one end that valve body 1 was kept away from to casing 2, install elastic component 8 in the first recess 21, the universal driving shaft 3 is installed in casing 2, the one end of universal driving shaft 3 is connected with casing 2, join in marriage flow valve 4 cover is established on universal driving shaft 3, elastic component 8 and join in marriage flow valve 4 looks butt, rotor 5 is connected with the other end of universal driving shaft 3, rotating assembly 6 passes through bearing 7 with casing 2 and is connected. When hydraulic oil is introduced into the cycloid hydraulic motor, the housing 2 is stationary, the linkage shaft 3 is connected with the housing 2, and the rotor 5 is connected with the linkage shaft 3, so that the rotor 5 cannot rotate around its own axis. The rotating assembly 6 is connected with the shell 2 through a bearing 7, and the rotating assembly 6 can rotate in the circumferential direction under the action of hydraulic oil, so that the cycloid hydraulic motor can bear larger radial load. In addition, because of the error of part processing, the contact surface of the distributing valve 4 and the rotating assembly 6 cannot achieve zero leakage, and the elastic piece 8 is arranged, so that pre-compression force can be provided for the distributing valve 4, the end face tightness between the distributing valve 4 and the rotating assembly 6 is improved before hydraulic oil is introduced, the leakage of the subsequently introduced hydraulic oil is reduced, and the working efficiency of the motor is improved.

It should be noted that, in the present utility model, the rotor 5 does not rotate, and the rotating assembly 6 rotates, compared with the existing axial rotation motor, the distance between the rotor and the bearing 7 is closer, the moment arm is shorter, and the moment is greater, so that the present utility model can bear larger radial load; the bearing 7 is used to connect the fixed body and the rotating body, and thus the bearing connected to the housing 2 can be a larger-sized bearing capable of bearing a larger load than the bearing connected to the output shaft. After the radial load which can be borne by the cycloid hydraulic motor is increased, the cycloid hydraulic motor can bear heavier weight of the machine body, and the radial pressure resistance is improved.

For example, a spline sleeve 24 is provided in the housing 2 at an end near the valve body 1, and one end of the linkage shaft 3 is connected to the spline sleeve 24. The distributing valve 4 is connected with the shell 2 through a locating pin 20.

Specifically, the rotating assembly 6 includes: the rotary wheel 61, the combined type valve plate 62, the stator 63, balance plate 64 and back lid 65, the rotary wheel 61 cover is established on casing 2, be connected through bearing 7 between rotary wheel 61 and the casing 2, the combined type valve plate 62 cover is established on the universal driving shaft 3, combined type valve plate 62 is located between valve 4 and rotor 5, the stator 63 cover is established on rotor 5, hold chamber 66 has between rotor 5 and the stator 63, combined type valve plate 62, stator 63 passes through bolt and rotary wheel 61 fixed connection, back lid 65 is located one side of stator 63, balance plate 64 is located between back lid 65 and the stator 63, the bolt passes back lid 65 in proper order, balance plate 64, stator 63, combined type valve plate 62 is connected with rotary wheel 61. In other words, when the gerotor motor is in operation, the rear cover 65, balance disc 64, stator 63, compound port plate 62, and rotating wheel 61 may rotate together. When hydraulic oil continuously enters the containing cavity 66, the volume of the containing cavity 66 changes under the action of hydraulic oil pressure, so that the rotation of the stator 63 is realized, and the rotating assembly 6 can be driven to rotate when the stator 63 rotates.

For example, the number of the elastic members 8 is three, and the elastic members are uniformly distributed in the circumferential direction of the end face of the housing 2, so that the pre-compression of the distributing valve 4 can be better performed, and the hydraulic oil leakage between the compound distributing plate 62 and the distributing valve 4 can be reduced.

For example, the end of the valve 4 adjacent to the compound port plate 62 is provided with an annular groove 41. The valve body 1 is provided with a first oil duct 11, the housing 2 is provided with a second oil duct 22, a first oil cavity 91 is formed in a gap between the distributing valve 4 and the housing 2, the first oil duct 11 is communicated with the second oil duct 22, the second oil duct 22 is communicated with the first oil cavity 91, and the first oil cavity 91 is communicated with the annular groove 41. When the high-pressure oil is introduced from the first oil passage 11, the high-pressure oil can enter the first oil chamber 91 through the first oil passage 11 and the second oil passage 22. High-pressure oil in the first oil chamber 91 can enter the annular groove 41 through a hole on the distributing valve 4, and the high-pressure oil in the annular groove 41 can enter the rotor 5 through an oil passage (not shown in the figure) on the compound distributing plate 62 and then flows into the containing chamber 66, so as to drive the stator 63 to rotate. For example, the housing 2 further has an inner cavity 25 and a fifth oil passage 26, and the inner cavity 25 communicates with the fifth oil passage 26. The valve body 1 is also provided with a sixth oil duct 13, and the sixth oil duct 13 is communicated with a fifth oil duct 26. The hydraulic oil entering the rotor 5 can enter the inner cavity 25 through the composite valve plate 62, and then flows out through the fifth oil duct 26 and the sixth oil duct 13 and returns to the hydraulic pump. The balancing disk 64 may improve the low speed stability of the motor.

For example, a second oil chamber 92 is formed between the rotary wheel 61 and the housing 2, and the bearing 7 is mounted in the second oil chamber 92. The shell 2 is also provided with a third oil duct 23, the valve body 1 is also provided with a fourth oil duct 12, the third oil duct 23 is communicated with the second oil cavity 92, the fourth oil duct 12 is communicated with the third oil duct 23, and the fourth oil duct 12 is communicated with an oil drain hole in the valve body 1. Because the contact surface between the distributing valve 4 and the composite distributing plate 62 cannot achieve zero leakage, a small amount of hydraulic oil can enter the second oil cavity 92 through a gap between the distributing valve 4 and the composite distributing plate 62, and the leaked hydraulic oil can flow out from the oil drain hole on the valve body 1 through the third oil duct 23 and the fourth oil duct 12 after entering the second oil cavity 92. The leaked hydraulic oil enters the second oil cavity 92, so that lubrication and flushing effects can be achieved on the bearing 7, the flushed hydraulic oil flows out of the oil drain hole, a worker can judge the state of the bearing 7 by observing the cleanliness of the hydraulic oil, and if the hydraulic oil is dirty, sundries exist, the bearing 7 may need to be maintained. In other words, the utility model utilizes the leaked hydraulic oil by improving the internal structure of the cycloid hydraulic motor, can realize lubrication flushing of the bearing 7, and is beneficial to prolonging the service life of the cycloid hydraulic motor.

In summary, through the improvement of the structure, the cycloid hydraulic motor of the utility model not only enables the motor to bear larger radial load and output high torque to meet the requirements of more working conditions, but also can generate a pre-compression force on the distributing valve 4 through the elastic piece 8, thereby reducing the leakage of hydraulic oil and improving the working efficiency of the motor. In addition, the leaked hydraulic oil can be used for lubricating and flushing the bearing 7, so that the service life of the cycloid hydraulic motor is prolonged.

With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined as the scope of the claims.

Claims

1. A gerotor hydraulic motor, comprising:

valve body (1), and

the valve comprises a shell (2), wherein the shell (2) is connected with one end of the valve body (1), a first groove (21) is formed in one end, far away from the valve body (1), of the shell (2), and an elastic piece (8) is arranged in the first groove (21);

the universal driving shaft (3), the universal driving shaft (3) is installed in the shell (2), and one end of the universal driving shaft (3) is connected with the shell (2);

the flow distribution valve (4) is connected with the shell (2), the flow distribution valve (4) is sleeved on the linkage shaft (3), and the elastic piece (8) is abutted with the flow distribution valve (4);

a rotor (5), wherein the rotor (5) is connected with the other end of the linkage shaft (3);

a rotating component (6), wherein the rotating component (6) is connected with the shell (2) through a bearing (7),

the rotating assembly (6) comprises: the rotary valve comprises a rotary wheel (61), a composite valve plate (62) and a stator (63), wherein the rotary wheel (61) is sleeved on a shell (2), the rotary wheel (61) is connected with the shell (2) through a bearing (7), the composite valve plate (62) is sleeved on a linkage shaft (3), the composite valve plate (62) is positioned between a valve (4) and a rotor (5), the stator (63) is sleeved on the rotor (5), a cavity (66) is formed between the rotor (5) and the stator (63), and the composite valve plate (62) and the stator (63) are fixedly connected with the rotary wheel (61) through bolts.

2. The gerotor hydraulic motor of claim 1, characterized in that the rotating assembly (6) further comprises: balance dish (64) and back lid (65), back lid (65) are located one side of stator (63), balance dish (64) are located back lid (65) with between stator (63), the bolt passes in proper order back lid (65), balance dish (64), stator (63), combined type valve plate (62) with swivel wheel (61) are connected.

3. Cycloidal hydraulic motor according to claim 1, characterized in that the end of the valve (4) adjacent to the compound port plate (62) is provided with an annular groove (41).

4. A gerotor hydraulic motor according to claim 3, characterized in that the valve body (1) is provided with a first oil duct (11), the housing (2) is provided with a second oil duct (22), a first oil chamber (91) is formed by a gap between the distributing valve (4) and the housing (2), the first oil duct (11) is communicated with the second oil duct (22), the second oil duct (22) is communicated with the first oil chamber (91), and the first oil chamber (91) is communicated with the annular groove (41).

5. Cycloidal hydraulic motor according to claim 1, characterized in that a second oil chamber (92) is formed between the rotating wheel (61) and the housing (2), the bearing (7) being mounted in the second oil chamber (92).

6. The cycloidal hydraulic motor according to claim 5, characterized in that a third oil duct (23) is further provided on the housing (2), a fourth oil duct (12) is further provided on the valve body (1), the third oil duct (23) is communicated with the second oil chamber (92), the fourth oil duct (12) is communicated with the third oil duct (23), and the fourth oil duct (12) is communicated with a drain hole on the valve body (1).

7. Cycloidal hydraulic motor according to claim 1, characterized in that a spline sleeve (24) is arranged in the housing (2) at the end near the valve body (1), and that one end of the linkage shaft (3) is connected to the spline sleeve (24).

8. Cycloidal hydraulic motor according to claim 1, characterized in that the distribution valve (4) is connected to the housing (2) by means of a locating pin (20).