CN212155034U - Double-output-shaft flow distribution cycloid hydraulic motor - Google Patents
Double-output-shaft flow distribution cycloid hydraulic motor Download PDFInfo
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- CN212155034U CN212155034U CN202020621414.7U CN202020621414U CN212155034U CN 212155034 U CN212155034 U CN 212155034U CN 202020621414 U CN202020621414 U CN 202020621414U CN 212155034 U CN212155034 U CN 212155034U
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Abstract
The utility model relates to a dual output shaft current distribution cycloid hydraulic motor belongs to hydraulic transmission technical field. The dual-output-shaft flow distribution cycloid hydraulic motor comprises a front output part, a middle part and a rear output part, wherein the front output part comprises a body shell, a front output shaft and a front cover provided with a sealing element, a bearing is arranged at the front end of the front output shaft to bear large radial force, an external oil leakage port is arranged at the front end of the body shell, and a rotor internal spline of the large-displacement motor is divided into a front section and a rear section. Use the utility model discloses back motor structure compact structure, the axle extension of output shaft can bear bigger radial force and axial force before the motor simultaneously, and overall structure is simple, manufacturing process is good, assembly and maintenance process are good.
Description
Technical Field
The invention relates to a cycloid hydraulic motor capable of converting hydraulic energy into mechanical energy, in particular to a double-output-shaft flow distribution cycloid hydraulic motor, and belongs to the technical field of hydraulic transmission.
Background
The cycloid hydraulic motor is a low-speed large-torque motor, has the advantages of small volume, large unit power density, high efficiency, wide rotating speed range and the like, is widely applied, and is particularly suitable for occasions with low pressure grade and high cost performance requirement due to simple structure and low cost.
The basic structure of the cycloid hydraulic motor is that a body shell or a rear cover is provided with a liquid inlet and a backflow port, one end of the cycloid pin gear meshing pair and a flow distribution mechanism are arranged, the flow distribution mechanism can be arranged in front of or behind the cycloid pin gear meshing pair, a shaft valve is generally arranged in front of the flow distribution mechanism for flow distribution, a plane flow distribution is arranged behind the shaft valve, and an output shaft is arranged at the other end of the cycloid pin gear meshing pair. And a rotor of the cycloidal pin gear meshing pair is meshed with an external gear at one end of the linkage shaft through an internal spline, and the other end of the linkage shaft is in transmission connection with the output shaft. When the cycloidal pin gear pair works, the flow distribution mechanism enables the liquid inlet to be communicated with the expansion meshing cavity of the cycloidal pin gear pair and enables the contraction cavity of the cycloidal pin gear pair to be communicated with the reflux port. As a result, pressure liquid enters the body shell or the rear cover from the liquid inlet and then enters the expansion meshing cavity formed by the cycloid pin gear meshing pair, so that the volume of the expansion meshing cavity is continuously enlarged, and meanwhile, liquid in the contraction meshing cavity formed by the cycloid pin gear meshing pair flows back from the return port; in the process, the rotor of the cycloidal pin gear meshing pair is driven to rotate by the pressure difference between the expansion meshing cavity and the contraction meshing cavity, and the rotation is transmitted to the output shaft through the linkage shaft to be output, so that the conversion from hydraulic energy to mechanical energy is realized. Meanwhile, the flow distribution mechanism (also called shaft valve) is driven by the linkage shaft to rotate, and the communication state is switched repeatedly and continuously, so that the conversion process is continued, and the motor continuously outputs torque.
According to the applicant, for the occasions with compact space structure and needing motion output in two different directions, by adopting the prior art, either two hydraulic motors need to be configured or a reversing transmission mechanism needs to be arranged, and large space is occupied. Therefore, the prior art can not meet the requirement that the motion output in two different directions is needed in narrow space occasions, or the requirement that the shaft extension can not bear the radial load can not be met, so that the market requirement is difficult to meet.
Disclosure of Invention
Based on this, it is necessary to provide a bidirectional power output cycloid hydraulic motor with a simple structure and strong radial force bearing capability to meet the use of various new requirements, aiming at the problem of radial force bearing capability of the existing cycloid motor.
The above object is achieved by the following embodiments:
a dual-output-shaft flow distribution cycloid hydraulic motor comprises a front output part, a middle part and a rear output part, wherein the front output part comprises a body shell, a front output shaft and a front cover for mounting a sealing element, the middle part comprises a rotating stator pair, a front partition plate, a rear partition plate, a front linkage shaft and a rear linkage shaft, and the rear output part comprises a rear body shell, a rear output shaft and a bearing.
The front end of preceding output shaft sets up the bearing, the bearing bears big radial force, set up between body shell and the protecgulum and let out the fluid passageway, the passageway is communicated with the hydraulic fluid port that leaks, and the hydraulic fluid port that leaks sets up in body shell front end.
The oil leakage passage is communicated with a one-way valve arranged on the body shell, and can be replaced by directly communicating with the inner splined hole of the output shaft.
In one embodiment, the bearing arranged on the front output shaft is a ball bearing, an outer ring of the ball bearing is installed in a matching manner with the body shell hole, an inner ring of the ball bearing is installed in a radial matching manner with the shaft of the front output shaft, and the bearing supports the radial force which is born by the shaft of the front output shaft in an extending manner.
In one embodiment, the bearing arranged on the front output shaft is a full complement roller bearing, the rear end of the front output shaft is provided with a needle roller bearing, the full complement roller bearing is used as a radial force main support for the shaft extension of the front output shaft, and the needle roller bearing is used as a radial force auxiliary support for the shaft extension of the front output shaft.
In one embodiment, the bearing arranged on the front output shaft is a front needle bearing, the rear end of the front output shaft is provided with a rear needle bearing, the front needle bearing is used as a main radial force support for the shaft extension of the front output shaft, and the rear needle bearing is used as an auxiliary radial force support for the shaft extension of the front output shaft.
In one embodiment, aiming at a large-displacement motor, an internal spline of a rotor is divided into a front section and a rear section, and a connecting pad is adopted in the middle to limit a front linkage shaft and a rear linkage shaft.
The front end of the mounting flange of the body shell is provided with a convex mounting and positioning spigot.
Compared with the hydraulic motor in the prior art, the hydraulic motor has the advantages that the structure is compact, the shaft extension of the front output shaft of the motor can bear larger radial force and axial force, the whole structure is simple, the manufacturing manufacturability is good, the assembly and maintenance manufacturability is good, and the application range of the hydraulic motor is expanded.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
The figure shows a front output section a, a middle section B, and a rear output section C.
The device comprises a front output shaft 1, a dust ring 2, a shaft seal 3, a front cover 4, screws 5, a body shell 6, an oil port cover 7, a front linkage shaft 8, an external leakage plug 9, a front bearing 10, a shaft retainer ring 11, a sealing ring 12, a sealing ring 13, a front partition plate 14, a rotor stator pair 15, a rear partition plate 16, a connecting stud 17, a nut 18, a rear body shell 19, a rear bearing 20, a sealing ring 21, a shaft seal 22, a dust ring 23, a rear output shaft 24, a hole retainer ring 25, a cover plate 26 and a rear linkage shaft 27.
FIG. 2 shows a second embodiment of the present invention.
The figure shows a front output section a1, a middle section B1, and a rear output section C1.
The front output shaft 30, the dust ring 31, the shaft seal 32, the screw 33, the front cover 34, the check valve 35, the front roller bearing 36, the body shell 37, the oil port cover 38, the front roller bearing 39, the leakage plug 40, the sealing ring 41 and the retaining ring 42.
FIG. 3 shows a third embodiment of the present invention.
The figure shows a front output section a2, a middle section B2, and a rear output section C2.
The device comprises a front output shaft 50, a dust ring 51, a shaft seal 52, a screw 53, a front cover 54, a one-way valve 55, a body shell 56, an oil port cover 57, a rear needle bearing 58, an outer leakage plug 59, a front needle bearing 60, a retainer ring 61, a sealing ring 62, a plane bearing 63 and a retainer ring 64.
FIG. 4 shows a fourth embodiment of the present invention.
The figure is a partial view of the middle part of the motor.
The device comprises a front linkage shaft 70, a front clapboard 71, a rotor-stator pair 72, a connecting pad 73, a rear clapboard 74 and a rear linkage shaft 75.
Detailed Description
Example one
A schematic diagram of a dual-output-shaft flow distribution cycloid hydraulic motor of this embodiment is shown in fig. 1, and includes a front output portion a, a middle portion B and a rear output portion C, where the front output portion a includes a body shell 6, a front output shaft 1, and a front cover 4 for installing a sealing member, the middle portion B includes a rotor-stator pair 15, a front partition 14, a rear partition 16, a front linkage shaft 8 and a rear linkage shaft 27, and the rear output portion C includes a rear body shell 19, a rear output shaft 24, a rear bearing 20, and other components fixed to a sealing assembly.
The front output part A, the middle part B and the rear output part C are fixedly connected into a whole through a connecting stud 17 and a nut 18.
The front end of the front output shaft 1 is provided with a bearing, the bearing bears large radial force, an oil leakage channel is arranged between the body shell 6 and the front cover 4, the channel is communicated with an oil leakage port, the oil leakage port is arranged at the front end of the body shell 6, and the oil leakage port is sealed by an oil leakage plug 9.
The oil leakage passage is communicated with a one-way valve arranged on the body shell 6, or the oil leakage passage is communicated with an output shaft inner spline hole, and the one-way valve can be arranged at the front end of the body shell 6 or the rear end of the body shell 6 and is communicated with the inner cavity of the motor.
In this embodiment, the bearing provided by the front output shaft 1 is a ball bearing 10, the outer ring of the ball bearing 10 is installed in a matching manner with the inner hole of the body shell 6, the inner ring of the ball bearing is installed in a matching manner with the shaft diameter of the front output shaft 1, and the ball bearing 10 supports the radial force borne by the shaft extension of the front output shaft 1 to play a main supporting role.
The front cover 4 is fixedly connected with the body shell 6 through a screw 5 to form a whole, and the motor cavity is sealed through the shaft seal 3 and the sealing ring 12.
The rear body shell 19 and the cover plate 26 are fixed by a retainer ring 25 through holes to form a cavity, and the cavity at the rear part of the motor is sealed by a sealing ring 21 and a shaft seal 22.
The rear output shaft 24 of the rear output section C is fixed in the rear body housing 19 by the rear bearing 20, transmitting the torque generated by the motor intermediate section B to the opposite direction of the motor.
Example two
A dual output shaft port cycloid hydraulic motor of the present embodiment is schematically shown in fig. 2 and comprises a front output portion a1, a middle portion B1 and a rear output portion C1, said front output portion a1 comprising a body housing 37 and a front output shaft 30, and a front cover 34 to which a seal is mounted.
The bearing arranged on the front output shaft 30 is a front roller bearing 36, the front roller bearing 36 is a full complement roller bearing, the rear end of the front output shaft 30 is provided with a front needle roller bearing 39, the full complement roller bearing 36 is used as a main radial force support for the axial extension of the front output shaft 30, and the front needle roller bearing 39 is used as an auxiliary radial force support for the axial extension of the front output shaft 30.
The outer diameter of the full complement roller bearing 36 is matched and installed with the aperture of the motor body shell 37, the outer diameter of the full complement roller bearing 36 is matched and installed with the aperture of the motor distributing hole, the roller of the full complement roller bearing 36 is supported with the step surface at one end of the front output shaft 30, and one direction axial force of the front output shaft 30 of the motor is born through the retainer ring 42 and the front cover 34.
The body shell 37 is provided with a one-way valve, and the front end of the body shell 37 is provided with a one-way valve 35 which is communicated with an external leakage plug 40 through an inner cavity of the motor.
EXAMPLE III
A dual output shaft port cycloid hydraulic motor of the present embodiment is schematically illustrated in fig. 3 and comprises a front output portion a2, a middle portion B2 and a rear output portion C2, said front output portion a2 comprising a body housing 56 and a front output shaft 50, and a seal mounted front cover 54.
The bearing arranged on the front output shaft 50 is a front needle bearing 60, the rear end of the front output shaft 50 is provided with a rear needle bearing 58, the length of the front needle bearing 60 is greater than that of the rear needle bearing 58, the front needle bearing 60 is used as a main radial force support for the axial extension of the front output shaft 50, and the rear needle bearing 58 is used as an auxiliary radial force support for the axial extension of the front output shaft 50.
The outer diameters of the front needle bearing 60 and the rear needle bearing 58 are matched with the flow distribution hole diameter of the motor.
One end step surface of the front output shaft 50 is supported in a single direction through a retainer ring 61, a plane bearing 63, a retainer ring 64 and the front cover 54, and bears one-direction axial force of the motor front output shaft 50.
The body shell 56 is provided with a one-way valve, the front end of the body shell 56 is provided with a one-way valve 35, and the body shell is communicated with an external leakage plug 59 through an inner cavity of the motor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Example four
The schematic diagram of the dual-output-shaft flow distribution cycloid hydraulic motor is shown in fig. 4, the middle portion comprises a front linkage shaft 70, a front partition plate 71, a rotating stator pair 72, a rear partition plate 74 and a rear linkage shaft 75, the front linkage shaft 70 and the rear linkage shaft 75 are respectively meshed with inner rotor splines of the rotating stator pair 72, the inner rotor spline is divided into a front section and a rear section aiming at a large-displacement motor, the middle portion adopts a connecting pad 73 to limit the front linkage shaft and the rear linkage shaft, and the inner rotor spline is segmented to facilitate part processing.
Meanwhile, the front end of the mounting flange of the body shell is provided with a convex mounting and positioning spigot.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A dual-output shaft flow distribution cycloid hydraulic motor mainly comprises a front output part, a middle part and a rear output part, and is characterized in that: the front output part comprises a body shell, a front output shaft and a front cover for mounting a sealing piece, the middle part comprises a rotor-stator pair, a front partition plate, a rear partition plate, a front linkage shaft and a rear linkage shaft, and the rear output part comprises a rear body shell, a rear output shaft and a bearing.
2. The dual output shaft port cycloid hydraulic motor of claim 1 further comprising: the front end of the front output shaft is provided with a bearing, and the bearing bears large radial force.
3. The dual output shaft port cycloid hydraulic motor of claim 2 further comprising: an oil leakage channel is arranged between the body shell and the front cover and is communicated with an oil leakage port which is arranged at the front end of the body shell.
4. The dual output shaft port cycloid hydraulic motor of claim 3 further comprising: the oil leakage passage is communicated with a one-way valve arranged on the body shell, and can be replaced by directly communicating with the inner splined hole of the output shaft.
5. The dual output shaft port cycloid hydraulic motor of claim 1 further comprising: the front end of the mounting flange of the body shell is provided with a convex mounting and positioning spigot.
6. A dual output shaft port cycloid hydraulic motor as defined in any one of claims 2, 4 or 5 wherein: the bearing that preceding output shaft set up is ball bearing, the outer lane and the body shell hole cooperation installation of ball bearing, the inner circle and the cooperation installation of preceding output shaft axle diameter of ball bearing, the radial force that the bearing supported preceding output shaft axle and stretched.
7. A dual output shaft port cycloid hydraulic motor as defined in any one of claims 2, 4 or 5 wherein: the bearing arranged on the front output shaft is a full complement roller bearing, the rear end of the front output shaft is provided with a needle bearing, the full complement roller bearing is used as a main radial force support for the shaft extension of the front output shaft, and the needle bearing is used as an auxiliary radial force support for the shaft extension of the front output shaft.
8. A dual output shaft port cycloid hydraulic motor as defined in any one of claims 2, 4 or 5 wherein: the bearing arranged on the front output shaft is a front needle bearing, the rear end of the front output shaft is provided with a rear needle bearing, the front needle bearing is used as a main radial force support for the shaft extension of the front output shaft, and the rear needle bearing is used as an auxiliary radial force support for the shaft extension of the front output shaft.
9. The dual output shaft port cycloid hydraulic motor of any one of claims 1-5 wherein: for a large-displacement motor, an internal spline of a rotor is divided into a front section and a rear section, and a connecting pad is adopted in the middle to limit a front linkage shaft and a rear linkage shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020621414.7U CN212155034U (en) | 2020-04-23 | 2020-04-23 | Double-output-shaft flow distribution cycloid hydraulic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020621414.7U CN212155034U (en) | 2020-04-23 | 2020-04-23 | Double-output-shaft flow distribution cycloid hydraulic motor |
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| Publication Number | Publication Date |
|---|---|
| CN212155034U true CN212155034U (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020621414.7U Active CN212155034U (en) | 2020-04-23 | 2020-04-23 | Double-output-shaft flow distribution cycloid hydraulic motor |
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| CN (1) | CN212155034U (en) |
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- 2020-04-23 CN CN202020621414.7U patent/CN212155034U/en active Active
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