CN2034205U - Reversible cycloid engine oil pump - Google Patents
Reversible cycloid engine oil pump Download PDFInfo
- Publication number
- CN2034205U CN2034205U CN 87211433 CN87211433U CN2034205U CN 2034205 U CN2034205 U CN 2034205U CN 87211433 CN87211433 CN 87211433 CN 87211433 U CN87211433 U CN 87211433U CN 2034205 U CN2034205 U CN 2034205U
- Authority
- CN
- China
- Prior art keywords
- pump
- reversible
- oil pump
- oil
- engine oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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- Rotary Pumps (AREA)
Abstract
The utility model relates to a reversible cycloid engine oil pump for the mechanical lubrication. The existing engine oil rotor pump can only supply oil in single direction, and can not meet the requirement of continuous oil supply in reverse rotation. The reversible cycloid engine oil pump is provided with an eccentric sleeve between an inner hole of the pump body and an external rotor; the eccentric sleeve can adjust the positions of a fat edge and a feather edge in the pump body according to the different rotating directions, and can supply oil both in normal and reverse rotation. The utility model can supply oil both in normal and reverse rotation; the transmission is stable, and the noise is small while in use.
Description
The utility model relates to pump, more particularly is the reversible cycloid formula oil pump that is used for mechanical lubrication.
Our seen machine oil rotor pump of past is made up of internal rotor, external rotor, the pump housing and pump shaft etc., can only unidirectional fuel feeding, continue the requirement of fuel feeding in the time of can not satisfying counter-rotating.
The purpose of this utility model is to provide a kind of can eliminate above-mentioned shortcoming, and forward and backward can both fuel feeding, little, the stable transmission oil pump of noise during work.
In order to achieve the above object, the utility model is provided with eccentric bushing (5) between pump housing hole inwall and external rotor, eccentric bushing and pump housing inner hole wall, the sliding contact of external rotor outer surface.End cap (6) is provided with locating stud (7), and two uvula A and B are arranged on the eccentric bushing end face.External rotor (4) has five teeth, and internal rotor (3) has four teeth, and the profile of tooth of internal rotor, external rotor all is a curtate hypocycloid, and the external rotor pine is enclosed within the eccentric bushing, and internal rotor is fixed on the pump shaft, the inner and outer rotors decentraction.When just changeing, the uvula A of eccentric bushing (5) is stuck on the locating stud, internal rotor drives the external rotor rotation, both rotating speed differences, the flank profil of inner and outer rotors remains tangent, forms the cavity that several volumes constantly change when rotating, the cavity volume of oil inlet hole one side is changed from small to big, machine oil is inhaled into, and the cavity volume of oil outlet one side is gone the machine oil extrusion from large to small.During counter-rotating, eccentric bushing rotates under the drive of external rotor, when waiting 180 ° of commentaries on classics, uvula B on the eccentric bushing (5) is stuck on the locating stud again, the webbing of eccentric bushing on top goes to bottom when just changeing, and external rotor moves up (Fig. 3), machine oil still by inlet advance, by exporting out.
Description of drawings:
Fig. 1 is a sectional drawing.
Fig. 2 phase diagram when just changeing.
Phase diagram when Fig. 3 is counter-rotating.
(1) pump shaft, (2) pump housing, (3) internal rotor, (4) external rotor, (5) eccentric bushing, (6) end cap, (7) locating stud.
Finishing the embodiment that the utility model possesses advantage especially is: internal rotor (3) is installed on the pump shaft (1), load onto external rotor (4) in pump shaft being inserted the pump housing (2), reinstall eccentric bushing (5), eccentric bushing is gone to appropriate location fashionable dress upper end cap (6) and locating stud (7).
Claims (3)
1, reversible cycloid formula oil pump has internal rotor, external rotor, the pump housing and pump shaft, it is characterized in that between external rotor outer surface and the pump housing inner hole wall eccentric bushing being arranged.
2, oil pump according to claim 1 is characterized in that there are two uvulas on the eccentric bushing top, and two uvulas with turning to difference, can turn over 180 ° along axis on same straight line.
3, oil pump according to claim 1, the flank profil that it is characterized in that said external rotor, internal rotor is a cycloid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211433 CN2034205U (en) | 1987-08-13 | 1987-08-13 | Reversible cycloid engine oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87211433 CN2034205U (en) | 1987-08-13 | 1987-08-13 | Reversible cycloid engine oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2034205U true CN2034205U (en) | 1989-03-15 |
Family
ID=4826247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87211433 Withdrawn CN2034205U (en) | 1987-08-13 | 1987-08-13 | Reversible cycloid engine oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2034205U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357605C (en) * | 2003-11-11 | 2007-12-26 | 上海师范大学 | Cycloidal pin gear hydraulic pump |
| CN101205904B (en) * | 2007-07-25 | 2011-05-04 | 邵建勋 | Eccentric cover for cycloidal inner/outer rotor pump |
| CN104514699A (en) * | 2013-09-30 | 2015-04-15 | 吴延勃 | Air compression pump |
| WO2022120776A1 (en) * | 2020-12-11 | 2022-06-16 | 浙江吉利控股集团有限公司 | Mechanical pump assembly and vehicle |
-
1987
- 1987-08-13 CN CN 87211433 patent/CN2034205U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357605C (en) * | 2003-11-11 | 2007-12-26 | 上海师范大学 | Cycloidal pin gear hydraulic pump |
| CN101205904B (en) * | 2007-07-25 | 2011-05-04 | 邵建勋 | Eccentric cover for cycloidal inner/outer rotor pump |
| CN104514699A (en) * | 2013-09-30 | 2015-04-15 | 吴延勃 | Air compression pump |
| WO2022120776A1 (en) * | 2020-12-11 | 2022-06-16 | 浙江吉利控股集团有限公司 | Mechanical pump assembly and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |