CN219221179U - Hydraulic transmission oil pump rotor - Google Patents
Hydraulic transmission oil pump rotor Download PDFInfo
- Publication number
- CN219221179U CN219221179U CN202223585842.7U CN202223585842U CN219221179U CN 219221179 U CN219221179 U CN 219221179U CN 202223585842 U CN202223585842 U CN 202223585842U CN 219221179 U CN219221179 U CN 219221179U
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- Prior art keywords
- rotor
- segment
- cycloid
- inner rotor
- line segment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The utility model discloses an oil pump rotor of a hydraulic transmission, which comprises an inner rotor and an outer rotor, wherein the molded lines of each gear tooth in the inner rotor and the outer rotor are the same, the molded lines of each gear tooth are symmetrically arranged, the inner rotor is positioned in the outer rotor, each half tooth on the inner rotor comprises a first swing line segment, a first arc segment and a second swing line segment, each half tooth on the outer rotor comprises a third swing line segment, a second arc segment, a third arc segment and a fourth swing line segment, the first swing line segment and the second swing line segment are the same cycloid, the third swing line segment and the fourth swing line segment are the same cycloid, and the first arc segment, the second arc segment and the third arc segment are all arranged close to tooth tops of corresponding teeth. Compared with the traditional reverse design, the cycloid rotor designed by software is modified, so that not only is a great deal of manpower saved, but also the time for developing new products is reduced, and compared with a pure cycloid rotor, the cycloid rotor can reduce the noise generated when the inner rotor and the outer rotor are operated.
Description
Technical Field
The utility model belongs to the technical field of oil pump rotors, and particularly relates to an oil pump rotor of a hydraulic transmission.
Background
In the prior art, two methods for designing the rotor are adopted, namely, one method is reverse design, namely, a molded line of a sample is mapped, and then the molded line which is mapped is shaped, so that the molded line can reach the expected purpose, and then mass production is carried out; the other is to directly input boundary conditions on special software to obtain the designed cycloid rotor. The former not only needs a large amount of manpower to survey and draw, but also needs a large amount of time to survey and draw to increase the time of new product development, and the cycloid rotor that the latter obtained is noisier in the operation, does not accord with current silence design.
Disclosure of Invention
The utility model aims to provide the oil pump rotor of the hydraulic transmission, which not only can save a great deal of manpower and reduce the development time of new products, but also can reduce the noise generated when the inner rotor and the outer rotor run.
The technical scheme adopted by the utility model is as follows: the utility model provides a hydraulic transmission oil pump rotor, includes inner rotor and outer rotor, the molded lines of every teeth of a cogwheel in inner rotor and the outer rotor are the same, and the molded lines symmetry of every teeth of a cogwheel sets up, the inner rotor is located the outer rotor, every half tooth includes first pendulum line segment, first circular arc section and second pendulum line segment on the inner rotor, every half tooth includes third pendulum line segment, second circular arc section, third circular arc section and fourth pendulum line segment on the outer rotor, and wherein first pendulum line segment and second pendulum line segment are same cycloid, and third pendulum line segment and fourth pendulum line segment are same cycloid, first circular arc section, second circular arc section and third circular arc section all are close to the tooth top setting of corresponding tooth.
As a preferable aspect, the inner rotor is provided with 10 teeth and the outer rotor is provided with 11 teeth.
Further preferably, the tip clearance between the inner rotor and the outer rotor is between 0.05mm and 0.08mm when the inner rotor is mounted within the outer rotor.
Further preferably, oil storage grooves are formed in any five teeth of the inner rotor in a penetrating mode.
The utility model has the beneficial effects that: compared with a pure cycloid rotor, the molded line of the present application can reduce noise generated when the inner rotor and the outer rotor are in operation because partial meshing is circular arc meshing.
Drawings
Fig. 1 is a schematic view of an inner rotor in the present utility model.
Fig. 2 is a schematic view of an outer rotor according to the present utility model.
Fig. 3 is a schematic view of the assembly of the inner rotor and the outer rotor of the present utility model.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-3, a hydraulic transmission oil pump rotor mainly comprises an inner rotor 1 and an outer rotor 2, the molded lines of each gear tooth in the inner rotor 1 and the outer rotor 2 are the same, and the molded lines of each gear tooth are symmetrically arranged, namely, the molded lines of the inner rotor and the outer rotor can be formed by half of the molded lines of the gear teeth after being symmetrical and then rotating. When in installation, the inner rotor 1 is eccentrically positioned in the outer rotor 2, and the axis of the inner rotor is positioned right below the axis of the outer rotor, and the eccentricity is 2.5mm.
Each half tooth on the inner rotor 1 is composed of a first cycloid segment 1a, a first circular arc segment 1b and a second cycloid segment 1c, each half tooth on the outer rotor 2 is composed of a third cycloid segment 2a, a second circular arc segment 2b, a third circular arc segment 2c and a fourth cycloid segment 2d, wherein the first cycloid segment 1a and the second cycloid segment 1c are identical cycloids, the third cycloid segment 2a and the fourth cycloid segment 2d are identical cycloids, and the first circular arc segment 1b, the second circular arc segment 2b and the third circular arc segment 2c are all close to tooth tops of corresponding teeth.
In this embodiment, the inner rotor 1 is provided with 10 teeth and the outer rotor 2 is provided with 11 teeth. When the inner rotor 1 is mounted in the outer rotor 2, the tip clearance between the inner rotor 1 and the outer rotor 2 is between 0.05mm and 0.08 mm.
In order to facilitate the lubrication of the inner rotor, an oil storage tank 1d is arranged on any five teeth of the inner rotor 1 in a penetrating way. In order to ensure the smooth rotation of the inner rotor and the outer rotor, the thicknesses of the inner rotor and the outer rotor are consistent.
The rotor of the present application firstly inputs boundary conditions in special software to obtain a cycloid rotor, and then the cycloid rotor is shaped at a position close to the tooth top, thereby obtaining the designed rotor.
Claims (4)
1. The utility model provides a hydraulic transmission oil pump rotor, includes inner rotor (1) and external rotor (2), the molded lines of every teeth of a cogwheel in inner rotor (1) and external rotor (2) are the same, and the molded line symmetry of every teeth of a cogwheel sets up, inner rotor (1) are located external rotor (2), its characterized in that: each half tooth on the inner rotor (1) comprises a first cycloid segment (1 a), a first circular arc segment (1 b) and a second cycloid segment (1 c), each half tooth on the outer rotor (2) comprises a third cycloid segment (2 a), a second circular arc segment (2 b), a third circular arc segment (2 c) and a fourth cycloid segment (2 d), the first cycloid segment (1 a) and the second cycloid segment (1 c) are identical cycloids, the third cycloid segment (2 a) and the fourth cycloid segment (2 d) are identical cycloids, and the first circular arc segment (1 b), the second circular arc segment (2 b) and the third circular arc segment (2 c) are all close to tooth tops of corresponding teeth.
2. The hydraulic transmission oil pump rotor as recited in claim 1 wherein: the inner rotor (1) is provided with 10 convex teeth, and the outer rotor (2) is provided with 11 concave teeth.
3. The hydraulic transmission oil pump rotor as recited in claim 1 wherein: when the inner rotor (1) is arranged in the outer rotor (2), the tooth top clearance between the inner rotor (1) and the outer rotor (2) is between 0.05mm and 0.08 mm.
4. The hydraulic transmission oil pump rotor as recited in claim 1 wherein: an oil storage tank (1 d) is arranged on any five teeth of the inner rotor (1) in a penetrating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223585842.7U CN219221179U (en) | 2022-12-30 | 2022-12-30 | Hydraulic transmission oil pump rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223585842.7U CN219221179U (en) | 2022-12-30 | 2022-12-30 | Hydraulic transmission oil pump rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219221179U true CN219221179U (en) | 2023-06-20 |
Family
ID=86750640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223585842.7U Active CN219221179U (en) | 2022-12-30 | 2022-12-30 | Hydraulic transmission oil pump rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219221179U (en) |
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2022
- 2022-12-30 CN CN202223585842.7U patent/CN219221179U/en active Active
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| GR01 | Patent grant |