CN201982945U - Oil pump assembly - Google Patents
Oil pump assembly Download PDFInfo
- Publication number
- CN201982945U CN201982945U CN2010205836021U CN201020583602U CN201982945U CN 201982945 U CN201982945 U CN 201982945U CN 2010205836021 U CN2010205836021 U CN 2010205836021U CN 201020583602 U CN201020583602 U CN 201020583602U CN 201982945 U CN201982945 U CN 201982945U
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- CN
- China
- Prior art keywords
- rotor
- pump
- oil pump
- chamber
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an oil pump assembly comprising a rotor shaft, a pump body and a pump cover. The pump cover is sleeved to the bottom end of the pump body. A rotor chamber is formed in the pump body. One end of the rotor shaft is inserted into the pump cover, while the other end thereof penetrates through the rotor chamber to be connected to an oil pump gear. An inner rotor and an outer rotor which are eccentrically mounted in the inner space of the pump body through the rotor shaft and engaged with each other are further arranged in the rotor chamber, wherein the inner rotor is sleeved and fixed to the rotor shaft, while the outer sleeve is sleeved to the inner rotor with a gap therebeween. An oil inlet chamber with an oil inlet and an oil outlet chamber with an oil outlet are formed in the pump cover. The rotor chamber is 30-34 cm high, and the inner rotor and the outer rotor also are 30-34 cm high. Besides, the oil pump gear is connected to the rotor shaft through a semicircular key. The utility model has the following advantages: the service life of the oil pump is prolonged by 1 year; and the flow rate in the oil pump is increased by 10% in contrast with the common oil pump.
Description
Technical field
The utility model relates to the motor oil Pump For Machine assembly, especially the CZ480Q type engine oil pump assembly used of motor.
Background technique
Because market is bigger to the demand of light truck, the vehicle of low speed high capacity particularly, this type of motor requires very high to the sae number of oil pump.And existing oil pump is too small owing to flow, and can not satisfy user's demand.
Summary of the invention
The technical problems to be solved in the utility model is that existing oil pump capacity is too small, can not satisfy the lubricating requirement of oil pump.
For solving the problems of the technologies described above, the technological scheme that the utility model adopted is: a kind of engine oil pump assembly comprises rotor shaft, the pump housing and pump cover; Pump cover is enclosed within pump housing bottom, is provided with rotor chamber in the pump housing, and rotor shaft one end inserts pump cover, and the other end is connected with an oil pump gear after passing rotor chamber; Also be provided with in the rotor chamber and be installed in the pump housing inner chamber and intermeshing internal rotor and external rotor by rotor shaft off-centre, wherein, the internal rotor socket is fixed on the rotor shaft, and the external rotor gap is socketed on the internal rotor; Pump cover is provided with the oil suction chamber of bringing hydraulic fluid port into and takes the oil pocket that of hydraulic fluid port out of; Described rotor chamber height is 30-34cm, and the height of internal rotor and external rotor is 30-34cm, and described oil pump gear is connected with rotor shaft by woodruff key.
By increasing the inside and outside rotor in oil pump height, increase the degree of depth of rotor chamber simultaneously, improve the flow of oil pump, the utility model is mainly used in CZ480Q type oil pump, because in the direct dipping machine oil of the pump housing of CZ480Q type oil pump, therefore, this improvement does not influence the installation of oil pump.
For strengthening the Location accuracy of oil pump, described pump cover is provided with the hi-Fix axle, and hi-Fix axle and pump shaft hole are concentric.Can not influence the Location accuracy of gear behind the location because of the oil pump alignment error.
For improving the working life of oil pump, be equipped with axle sleeve on the described pump housing and the pump cover.Axle sleeve adopts powdered metallurgical material, and axle sleeve effectively reduces the friction factor between the pump housing and the pump shaft, prevents that effectively oil pump stings axle.
As a kind of improvement project of the present utility model, described internal rotor and external rotor have throw of eccentric, and internal rotor is different with the number of teeth on the external rotor; Inside and outside rotor is done nonsynchronous in the same way rotation.
As another kind of improvement project of the present utility model, internal rotor has 4 teeth, and external rotor has 5 teeth.
For prolonging product working life, on pump cover, be provided with safety valve, the working pressure of oil pump is set by safety valve.By the cracking pressure of safety valve is set, can effectively eliminate the engine oil pipe explosion and the oil pump pump shaft eccentric wear that cause because of the oil pump overpressure.
The utility model has the advantages that: flow-rate ratio common machine oil pump improves 10% in the oil pump long service life 1 year, oil pump.
Description of drawings
Fig. 1 is the sectional view of engine oil pump assembly;
Fig. 2 is the pump cover structural representation.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As depicted in figs. 1 and 2, the pump housing 1 is connected by bolt 3 with pump cover 2, and the pump housing is provided with axle sleeve 4, has the rotor chamber that inner and outer rotors is set on the pump housing 1, internal rotor 5 is connected on the rotor shaft 6, opens at the oil suction chamber 7 on the pump cover relative with rotor chamber 2 surfaces to communicate with oil inlet hole 8 in the pump cover 2; The oil pocket of opening on the pump cover relative with rotor chamber 2 surfaces 9 that goes out communicates with oil outlet 10 in the pump housing 1.Rotor shaft 6 passes the axle sleeve in pump housing master supported hole 11 and the auxilliary bearing hole.By the woodruff key on the rotor shaft 12 rotating power that crankshaft gear passes to oil pump gear 13 is passed to rotor shaft 6, make inside and outside rotor carry out nonsynchronous in the same way rotation.By being tightened in rotor shaft 6 upper cap nuts 14, fixation machine oil pump gear 13.Because during the running up of engine oil pump assembly, machine oil is pressed the exertin height, can cause oil pipe explosion and oil pump pump shaft eccentric wear, increased safety valve 15, the working pressure of oil pump is set, when engine oil pump assembly is installed on the motor, positions by high-precision pump housing positioning shaft 16, improve the gear meshing precision, bolt passes pump housing bolt hole 17 oil pump is fixed on the motor.In this example, described internal rotor 5 and external rotor 18 have throw of eccentric A, and internal rotor 5 is different with the number of teeth on the external rotor 18; Internal rotor 5 has 4 teeth, and external rotor 18 has 5 teeth, and inner and outer rotors is done nonsynchronous in the same way rotation.
Claims (5)
1. engine oil pump assembly comprises rotor shaft, the pump housing and pump cover; Pump cover is enclosed within pump housing bottom, is provided with rotor chamber in the pump housing, and rotor shaft one end inserts pump cover, and the other end is connected with an oil pump gear after passing rotor chamber; Also be provided with in the rotor chamber and be installed in the pump housing inner chamber and intermeshing Inner rotor and external rotor by rotor shaft off-centre, wherein, the internal rotor socket is fixed on the rotor shaft, and the external rotor gap is socketed on the internal rotor; Pump cover is provided with the oil suction chamber of bringing hydraulic fluid port into and takes the oil pocket that of hydraulic fluid port out of; It is characterized in that: described rotor chamber height is 30-34cm, and the height of internal rotor and external rotor is 30-34cm, and described oil pump gear is connected with rotor shaft by woodruff key.
2. engine oil pump assembly according to claim 1 is characterized in that: described pump cover is provided with the hi-Fix axle, and hi-Fix axle and pump shaft hole are concentric.
3. engine oil pump assembly according to claim 1 and 2 is characterized in that: described internal rotor and external rotor have throw of eccentric, and internal rotor is different with the number of teeth on the external rotor; Inside and outside rotor is done nonsynchronous in the same way rotation.
4. engine oil pump assembly according to claim 3 is characterized in that: internal rotor has 4 teeth, and external rotor has 5 teeth.
5. engine oil pump assembly according to claim 1 and 2 is characterized in that: be provided with safety valve on pump cover, the working pressure of oil pump is set by safety valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205836021U CN201982945U (en) | 2010-10-29 | 2010-10-29 | Oil pump assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205836021U CN201982945U (en) | 2010-10-29 | 2010-10-29 | Oil pump assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982945U true CN201982945U (en) | 2011-09-21 |
Family
ID=44610405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205836021U Expired - Fee Related CN201982945U (en) | 2010-10-29 | 2010-10-29 | Oil pump assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982945U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537630A (en) * | 2011-11-24 | 2012-07-04 | 王运生 | Variable displacement oil pump |
| CN111174078A (en) * | 2020-03-20 | 2020-05-19 | 湖南机油泵股份有限公司 | Single-side support oil pump with chain wheel |
-
2010
- 2010-10-29 CN CN2010205836021U patent/CN201982945U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537630A (en) * | 2011-11-24 | 2012-07-04 | 王运生 | Variable displacement oil pump |
| CN111174078A (en) * | 2020-03-20 | 2020-05-19 | 湖南机油泵股份有限公司 | Single-side support oil pump with chain wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20131029 |