CN204664834U - A kind of oil pump - Google Patents
A kind of oil pump Download PDFInfo
- Publication number
- CN204664834U CN204664834U CN201520262001.3U CN201520262001U CN204664834U CN 204664834 U CN204664834 U CN 204664834U CN 201520262001 U CN201520262001 U CN 201520262001U CN 204664834 U CN204664834 U CN 204664834U
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- CN
- China
- Prior art keywords
- pump
- oil
- pump shaft
- shaft
- hole
- 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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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a kind of oil pump; The technical problem solved: for conventional machine oil pump of the prior art, due to the comprehensive difference of the lubrication in oil pump, easily causes parts damage and breaks down; The uncontrolled problem of cracking pressure of existing various oil pump simultaneously.The technological scheme adopted: a kind of oil pump, comprises the pump housing, internal rotor, external rotor, pump cover, pump shaft, oil pump gear and axle sleeve.Advantage, the rotor chamber bottom surface of this oil pump is provided with oil groove, and oil groove is communicated with the main supported hole of pump shaft, and this oil groove increases the lubrication of the main supported hole of pump shaft, improves this oil pump stability in use and working life.The pump housing of this oil pump is provided with pump cover positioning shaft, and concentric with pump shaft hole, can not affect the positioning precision of gear behind location because of oil pump alignment error.The pump cover of this oil pump arranging safety valve, by arranging the cracking pressure of safety valve, eliminating the engine oil pipe explosion because oil pump overpressure causes and oil pump pump shaft eccentric wear.
Description
Technical field
The utility model relates to a kind of oil pump, particularly relates to the engine oil pump assembly of motor on a kind of light truck.
Background technique
Because market is comparatively large to the demand of light truck, the vehicle of particularly low speed high capacity, this type of motor, to the sae number of oil pump, requires very high.Long-term facts have proved, in the operation of oil pump, each lubricant housings, to pressure, flow, the flow velocity three elements of lubricant oil, is not quite similar from the strict sense, and variant position is reliable, and reasonably fuel feeding is even more important.
At present, conventional machine oil pump, due to the comprehensive difference of the lubrication in oil pump, easily causes parts damage and breaks down; The cracking pressure of existing various oil pump is uncontrolled simultaneously.
Model utility content
Technical problem to be solved in the utility model is: for conventional machine oil pump of the prior art, due to the comprehensive difference of the lubrication in oil pump, easily causes parts damage and breaks down; The uncontrolled problem of cracking pressure of existing various oil pump simultaneously.
Design philosophy of the present utility model is, proposes the comprehensive Novel oil pump of a kind of lubrication, meets every technical requirements of high-quality, high-power lubrication system.
The purpose of this utility model is, there is provided a kind of oil pump, the rotor chamber bottom surface of this oil pump is provided with oil groove, and oil groove is communicated with the main supported hole of pump shaft, this oil groove increases the lubrication of the main supported hole of pump shaft, improves this oil pump stability in use and working life; Meanwhile, the pump cover of this oil pump being provided with safety valve, by arranging the cracking pressure of safety valve, eliminating the engine oil pipe explosion because oil pump overpressure causes and oil pump pump shaft eccentric wear.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of oil pump, comprises the pump housing; The described pump housing comprises joint and rotor assembly department; Described joint is connected with rotor assembly department; A through pump shaft hole is provided with in described joint; Described pump shaft hole is communicated with rotor chamber; Described pump shaft hole is made up of the main supported hole of pump shaft and pump shaft supplemental support hole; The main supported hole of described pump shaft is positioned at the bottom of joint near rotor assembly department, and pump shaft supplemental support hole is the part removing the main supported hole of pump shaft in pump shaft hole; Described pump shaft supplemental support hole length equals the 2-2.5 of the main supported hole length of pump shaft doubly; Be provided with axle sleeve in described pump shaft supplemental support hole, and axle sleeve is positioned at the top in pump shaft hole; Described sleeve length equals the 1/5-2/5 of pump shaft supplemental support hole length doubly; The upper outside projection of outer surface of described joint is equipped with a circle pump housing positioning shaft; The center of described pump housing positioning shaft and the centres in pump shaft hole; Rotor chamber is provided with in described rotor assembly department; Described rotor chamber bottom surface is provided with oil groove, and described oil groove is communicated with the main supported hole of pump shaft;
Engage each other and be arranged on internal rotor in rotor chamber and external rotor;
Run through the pump shaft of the joint on the pump housing and the internal rotor in rotor assembly department simultaneously; Described pump shaft is supported on axle sleeve with on the main supported hole of pump shaft simultaneously; Described pump shaft is connected mutually with internal rotor;
The pump cover be connected with pump housing upper rotor part assembly department; Surface relative with rotor chamber on described pump cover be provided with oil suction chamber and go out oil pocket; The lid of described pump cover is provided with oil inlet hole and oil outlet; Described oil inlet hole one end is communicated with oil suction chamber, and the other end is communicated with outside oil groove; Described oil outlet one end is communicated with oil pocket, and the other end is communicated with outside oil trap; Described pump cover lid is provided with safety valve.
Axle sleeve of the present utility model adopts powdered metallurgical material of the prior art to support, and the utility model employing axle sleeve effectively reduces the friction factor between the pump housing and pump shaft, effectively prevents oil pump to sting axle.
Further improvement, described joint and rotor assembly department one-body molded.The object of the utility model joint and the one-body molded setting of rotor assembly department is, improves the overall usability of this oil pump.
Further improvement, described pump housing positioning shaft is positioned at the middle part of joint.
Further improvement, described oil pump also comprises oil pump gear; Described oil pump gear is arranged on the top of pump shaft by heat pressing process interference fit.The utility model adopts heat pressing process to be arranged on pump shaft by oil pump gear, and its main object is increased pump shaft safety coefficient, and the stress that avoiding splines causes concentrates the danger of off-axis, simplifies assembly technology simultaneously.
Compared with prior art, its beneficial effect is the utility model:
1, the rotor chamber bottom surface of this oil pump is provided with oil groove, and oil groove is communicated with the main supported hole of pump shaft, and this oil groove increases the lubrication of the main supported hole of pump shaft, improves this oil pump stability in use and working life.
2, the pump housing of this oil pump is provided with pump cover positioning shaft, and concentric with pump shaft hole, can not affect the positioning precision of gear behind location because of oil pump alignment error.
The pump cover of 3, this oil pump arranging safety valve, by arranging the cracking pressure of safety valve, eliminating the engine oil pipe explosion because oil pump overpressure causes and oil pump pump shaft eccentric wear.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present embodiment.
Fig. 2 is the plan view of pump cover.
In figure: 1, the pump housing, 2, pump cover, 4, axle sleeve, 5, rotor chamber, 6, internal rotor, 7, pump shaft, 8, oil suction chamber, 9, oil inlet hole, 10, oil outlet, 11, the main supported hole of pump shaft, 12, pump shaft supplemental support hole, 13, oil pump gear, 15, pump housing positioning shaft, 17, external rotor, 18, oil groove, 20, pump shaft hole, 21, joint, 22, rotor assembly department, 23, go out oil pocket.
Embodiment
Below technical solutions of the utility model are described in detail, but protection domain of the present utility model is not limited to described embodiment.
For making content of the present utility model more become apparent, be further described below in conjunction with accompanying drawing 1-Fig. 2 and embodiment.
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment:
The present embodiment, for the oil pump of WP2.7 model, further describes.
As Fig. 1, it is the sectional view of the oil pump in the present embodiment; This oil pump comprises the pump housing 1, axle sleeve 4, internal rotor 6, external rotor 15, pump shaft 7, pump cover 2 and oil pump gear 13.
The pump housing 1 in the present embodiment oil pump comprises joint 21 and rotor assembly department 22; Joint 21 in the present embodiment is one-body molded with rotor assembly department 22.The object of the present embodiment joint and the one-body molded setting of rotor assembly department is, improves the overall usability of this oil pump.Joint 21 is connected with rotor assembly department 22; A through pump shaft hole 20 is provided with in joint 21; Pump shaft hole 20 is communicated with rotor chamber 5.Pump shaft hole 20 is made up of the main supported hole 11 of pump shaft and pump shaft supplemental support hole 12; The main supported hole 11 of pump shaft is positioned at the bottom of joint 21 near rotor assembly department 22, and pump shaft supplemental support hole 12 is the part of the main supported hole 11 of removing pump shaft in pump shaft hole 20; Pump shaft supplemental support hole 12 length equals 2 times of pump shaft main supported hole 11 length; Be provided with axle sleeve 4 in pump shaft supplemental support hole 12, and axle sleeve 4 is positioned at the top in pump shaft hole 20.Axle sleeve 4 length equals 1/5 times of pump shaft supplemental support hole 12 length.The upper outside projection of outer surface of joint 21 is equipped with a circle pump housing positioning shaft 15; The center of pump housing positioning shaft 15 and the centres in pump shaft hole 20.Pump housing positioning shaft 15 in the present embodiment is positioned at the middle part of joint 21.Rotor chamber 5 is provided with in rotor assembly department 22; Rotor chamber 5 bottom surface is provided with oil groove 18, and oil groove 18 is communicated with the main supported hole 11 of pump shaft.The degree of depth of the oil groove 18 in the present embodiment is 1.5mm, increases the lubrication of the main supported hole 11 of pump shaft, improves oil pump stability in use and working life.
Internal rotor 6 and external rotor 15 engage each other and are arranged in rotor chamber 5.In the present embodiment, internal rotor 6 and external rotor 15 have throw of eccentric, and internal rotor 6 is different with the number of teeth on external rotor 15.In the present embodiment, the internal rotor 6 of the oil pump of WP2.7 model has 4 teeth, and external rotor 15 has 5 teeth, and internal rotor 6, external rotor 15 do nonsynchronous in the same way rotation.
Pump shaft 7 runs through the joint 21 on the pump housing 1 and the internal rotor 6 in rotor assembly department 22 simultaneously.Pump shaft 7 is supported on axle sleeve 4 with on the main supported hole 11 of pump shaft simultaneously; Pump shaft 7 is connected mutually with internal rotor 6.Axle sleeve 4 in the present embodiment adopts powdered metallurgical material of the prior art to support, and adopts axle sleeve effectively to reduce friction factor between the pump housing 1 and pump shaft 7, effectively prevent oil pump to sting axle in the present embodiment.Oil pump gear 13 is arranged on the top of pump shaft 7 by heat pressing process interference fit.Heat pressing process described in the present embodiment is technique of the prior art, and its concrete manufacturing process the present embodiment is not described in detail.
Pump cover 2 is connected by bolt with the pump housing 1 upper rotor part assembly department 22.Surface relative with rotor chamber 5 on pump cover 2 be provided with oil suction chamber 8 and go out oil pocket 23; The lid of pump cover 2 is provided with oil inlet hole 9 and oil outlet 10.Oil inlet hole 9 one end is communicated with oil suction chamber 8, and the other end is communicated with outside oil groove; Oil outlet 10 one end is communicated with oil pocket 23, and the other end is communicated with outside oil trap.Pump cover 2 lid is provided with safety valve 14.The pump cover 2 of this oil pump arranging safety valve 14, by arranging the cracking pressure of safety valve, eliminating the engine oil pipe explosion because oil pump overpressure causes and oil pump pump shaft eccentric wear.
The rotor chamber bottom surface of the present embodiment oil pump is provided with oil groove, and oil groove is communicated with the main supported hole of pump shaft, and this oil groove increases the lubrication of the main supported hole of pump shaft, improves this oil pump stability in use and working life; Meanwhile, the pump cover of the present embodiment oil pump being provided with safety valve, by arranging the cracking pressure of safety valve, eliminating the engine oil pipe explosion because oil pump overpressure causes and oil pump pump shaft eccentric wear.
As mentioned above, although represented with reference to specific preferred embodiment and described the utility model, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model not departing from claims definition, various change can be made in the form and details to it.
Claims (4)
1. an oil pump, is characterized in that, comprises the pump housing (1); The described pump housing (1) comprises joint (21) and rotor assembly department (22); Described joint (21) is connected with rotor assembly department (22); A through pump shaft hole (20) is provided with in described joint (21); Described pump shaft hole (20) is communicated with rotor chamber (5); Described pump shaft hole (20) is made up of the main supported hole of pump shaft (11) and pump shaft supplemental support hole (12); The main supported hole of described pump shaft (11) is positioned at the bottom of joint (21) near rotor assembly department (22), and pump shaft supplemental support hole (12) is the part of the removing main supported hole of pump shaft (11) in pump shaft hole (20); Described pump shaft supplemental support hole (12) length equals the 2-2.5 of the main supported hole of pump shaft (11) length doubly; Be provided with axle sleeve (4) in described pump shaft supplemental support hole (12), and axle sleeve (4) is positioned at the top of pump shaft hole (20); Described axle sleeve (4) length equals the 1/5-2/5 of pump shaft supplemental support hole (12) length doubly; The upper outside projection of outer surface of described joint (21) is equipped with a circle pump housing positioning shaft (15); The center of described pump housing positioning shaft (15) and the centres of pump shaft hole (20); Rotor chamber (5) is provided with in described rotor assembly department (22); Described rotor chamber (5) bottom surface is provided with oil groove (18), and described oil groove (18) is communicated with the main supported hole of pump shaft (11);
Engage each other and be arranged on internal rotor (6) in rotor chamber (5) and external rotor (15);
Run through the pump shaft (7) of the joint (21) on the pump housing (1) and the internal rotor (6) in rotor assembly department (22) simultaneously; Described pump shaft (7) is supported on axle sleeve (4) and on the main supported hole of pump shaft (11) simultaneously; Described pump shaft (7) is connected mutually with internal rotor (6);
The pump cover (2) be connected with the pump housing (1) upper rotor part assembly department (22); The upper surface relative with rotor chamber (5) is provided with oil suction chamber (8) and goes out oil pocket (23) described pump cover (2); The lid of described pump cover (2) is provided with oil inlet hole (9) and oil outlet (10); Described oil inlet hole (9) one end is communicated with oil suction chamber (8), and the other end is communicated with outside oil groove; Described oil outlet (10) one end is communicated with oil pocket (23), and the other end is communicated with outside oil trap; Described pump cover (2) lid is provided with safety valve (14).
2. oil pump as claimed in claim 1, is characterized in that, described joint (21) is one-body molded with rotor assembly department (22).
3. oil pump as claimed in claim 1, it is characterized in that, described pump housing positioning shaft (15) is positioned at the middle part of joint (21).
4. oil pump as claimed in claim 1, it is characterized in that, described oil pump also comprises oil pump gear (13); Described oil pump gear (13) is arranged on the top of pump shaft (7) by heat pressing process interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262001.3U CN204664834U (en) | 2015-04-27 | 2015-04-27 | A kind of oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520262001.3U CN204664834U (en) | 2015-04-27 | 2015-04-27 | A kind of oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204664834U true CN204664834U (en) | 2015-09-23 |
Family
ID=54135214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520262001.3U Expired - Fee Related CN204664834U (en) | 2015-04-27 | 2015-04-27 | A kind of oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204664834U (en) |
-
2015
- 2015-04-27 CN CN201520262001.3U patent/CN204664834U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160427 |