一种高速配流摆线液压马达
By setting hollow axial inner holes and radial holes in the linkage shaft, the structure of the rotor-stator pair is improved, the problem of insufficient linkage shaft strength is solved, and the high torque output and wide application of the high-speed distribution cycloidal hydraulic motor are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENJIANG DALI HYDRAULIC MOTOR
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-17
AI Technical Summary
The diameter of the linkage shaft of the existing high-speed distribution cycloidal hydraulic motor is insufficient, resulting in insufficient strength, which limits the ability to transmit large torque and prevents the expansion of the application range.
A hollow axial inner hole and a radial hole are set between the two splines of the linkage shaft to form an oil channel. By improving the structural parameters of the rotor-stator pair and the distribution plate, the strength of the linkage shaft and the smoothness of the oil channel are enhanced.
The diameter and strength of the linkage shaft have been increased, enhancing the motor's torque output capability and the smoothness of the oil passage, thus expanding the range of applications for the motor.
Smart Images
Figure CN224515296U_ABST
Abstract
Claims
1. A high-speed cycloidal hydraulic motor, comprising two main parts: a motor positioning and mounting drive part and a motor body meshing pair part, which are fixed together by connecting bolts. The motor positioning and mounting drive part includes a housing, an output shaft, bearings, and seals. The motor body meshing pair part includes a rotor-stator pair, a linkage shaft, a distributor plate, and its supporting components. The motor is characterized by: The internal cavity between the two splines of the linkage shaft is provided with a hollow axial inner hole. One end of the linkage shaft meshes with the distribution plate and a radial hole is provided at the constricted neck position. The radial hole is provided between the two splines of the linkage shaft. The axial inner hole and the radial hole form an oil passage. The constricted neck position spans the two spline ends of the linkage shaft and is mainly provided in the inner hole of the distribution support plate.
2. The high-speed distribution curve swing hydraulic motor according to claim 1, wherein: The internal spline of the rotor of the linkage shaft meshing stator pair is located in the middle of the rotor.
3. The high-speed distribution curve swing hydraulic motor according to claim 1, characterized in that: The output shaft of the linkage shaft is supported by two bearings, one at the front and one at the rear. The front bearing is located on one side of the motor housing mounting stop, and the rear bearing is located on the other side of the housing. The rear bearing is installed at the end of the spline hole inside the output shaft.
4. The high-speed distribution curve swing line hydraulic motor according to claim 1, characterized in that: The retaining ring in the inner hole of the shell stop side limits the axial position of the shaft seal seat and simultaneously limits the axial position of the output shaft and other components such as the front bearing.
5. The high-speed distribution curve swing line hydraulic motor according to claim 3, characterized in that: The front bearing is a roller bearing, and the roller bearing is a ground track support frame. The two ends of the support frame abut against the retaining ring of the plane bearing and one end face of the shaft seal seat, respectively. The mounting holes of the shaft seal seat and the roller bearing are the inner holes of the stop end of the housing, and are holes of the same size.
6. The high-speed gerotor hydraulic motor of claim 1, wherein: The housing is provided with an oil inlet channel and an oil return channel. One oil port of the housing communicates with the axial oil passage hole of the housing, and then communicates with the cavity between the partition plate and the distribution plate through the irregular oil passage hole of the connecting bolt hole of the partition plate, stator and distribution support plate. The other oil port of the housing communicates with the radial oil passage hole of the housing, and then reaches the internal cavity of the distribution plate through the inner cavity of the housing, output shaft, linkage shaft and distribution support plate.
7. A high-speed cycloidal hydraulic motor according to claim 1, characterized in that: The oil passage formed by the two oil ports of the housing flows through the internal channel of the distribution support plate. Through the distribution movement of the distribution plate and the distribution support plate, and the cycloidal meshing movement of the differential tooth of the rotor-stator pair, high and low pressure continuously drive the rotor-stator pair to move continuously. The linkage of the spline teeth at both ends of the linkage shaft and the linkage shaft drive head of the distribution plate, the linkage of the three realizes the output of the motor speed and torque.
8. The high-speed gerotor hydraulic motor of claim 1, wherein: The rotor-stator pair is a stator-stator pair with inserts, consisting of a stator, pin teeth, and a rotor. The theoretical parameters of the rotor-stator pair cycloidal pair are: 6 / 7 tooth structure, pin wheel diameter Φ16.3±0.1mm, pin wheel distribution circle diameter Φ77.5±0.2mm, and rotor eccentricity 3.5±0.1mm.
9. The high-speed gerotor hydraulic motor according to claim 8, characterized in that: The theoretical parameters of the rotor-stator pair cycloidal structure are: 6 / 7 tooth structure, pin wheel diameter Φ16.32mm, pin wheel distribution circle diameter Φ77.4mm, and rotor eccentricity 3.45mm.
10. The high-speed gerotor hydraulic motor of claim 1, wherein: The linkage shaft has involute spline parameters 12-DP8.5 / 17, a pressure angle of 30°, and a spline major diameter greater than Ф38mm.