CN218720540U - Mounting structure of intermediate gear of oil pump - Google Patents
Mounting structure of intermediate gear of oil pump Download PDFInfo
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- CN218720540U CN218720540U CN202222785590.6U CN202222785590U CN218720540U CN 218720540 U CN218720540 U CN 218720540U CN 202222785590 U CN202222785590 U CN 202222785590U CN 218720540 U CN218720540 U CN 218720540U
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- China
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- intermediate gear
- step shaft
- mounting structure
- oil pump
- lubricating oil
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Abstract
The utility model discloses an installation structure of an oil pump intermediate gear, which comprises an intermediate gear, wherein the intermediate gear is sleeved on one side of a step shaft, and the other side of the step shaft is arranged in a pump body in a penetrating way; the intermediate gear is connected with the step shaft through a bushing, an inner hole of the bushing is in clearance connection with an outer circle of the step shaft, and the outer circle of the bushing is in interference connection with an inner hole of the intermediate gear; an annular groove is formed in the inner wall of the bushing, and a lubricating oil hole A communicated with the annular groove is formed in the step shaft; the pump body is internally provided with a high-pressure oil cavity and a lubricating oil hole B which are communicated, and the lubricating oil hole B is communicated with the lubricating oil hole A. The utility model provides a mounting structure of oil pump intermediate gear can increase intermediate gear's wearability and provide sufficient lubrication, can effectual improvement intermediate gear life to improve oil pump life-span.
Description
Technical Field
The utility model relates to a mounting structure, specific theory relates to a mounting structure of oil pump intermediate gear, belongs to oil pump technical field.
Background
The oil pump is used for increasing the pressure of the oil and forcibly pumping the oil to the friction surfaces of the moving parts so that the oil can be circulated in the lubricating system to ensure good lubrication of the engine. The power of the oil pump is mainly transmitted by the crankshaft of the engine, sometimes because of the difference of installation positions, too large center distance or the problem of the rotating direction of the driving gear, an intermediate gear needs to be added between the driving gear of the oil pump and the crankshaft gear to meet the requirement of the power transmitted to the oil pump by the crankshaft of the engine, and the requirement of changing the driving rotating direction or meeting the requirement of the center distance is facilitated.
The intermediate gear is generally directly arranged on the pump body of the oil pump, and only a single support structure can be adopted due to space limitation, and a certain defect exists in single support, so that the problems of poor wear resistance and poor lubrication are easily caused in the use process of the intermediate gear, and the performance and the service life of the oil pump are directly influenced.
In view of the foregoing, it is apparent that the intermediate gear of the prior art has inconvenience and disadvantages in practical use, and therefore, there is a need for an intermediate gear mounting structure that is reliable in operation.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to not enough in the background art, provide an oil pump intermediate gear's mounting structure, can increase intermediate gear's wearability and provide sufficient lubrication, can effectual improvement intermediate gear life to improve oil pump life-span.
For solving the technical problem, the utility model discloses a following technical scheme:
the mounting structure of the oil pump intermediate gear comprises an intermediate gear, wherein the intermediate gear is sleeved on one side of a step shaft, and the other side of the step shaft is arranged in a pump body in a penetrating manner;
the intermediate gear is connected with the step shaft through a bushing, an inner hole of the bushing is in clearance connection with an outer circle of the step shaft, and the outer circle of the bushing is in interference connection with an inner hole of the intermediate gear;
an annular groove is formed in the inner wall of the bushing, and a lubricating oil hole A communicated with the annular groove is formed in the step shaft; the pump body is internally provided with a high-pressure oil cavity and a lubricating oil hole B which are communicated, and the lubricating oil hole B is communicated with the lubricating oil hole A.
According to an optimized scheme, the step shaft is provided with a circular step.
Further, the lining is made of PTFE.
Further, the intermediate gear is fastened to the step shaft by a gear baffle and a fastening bolt.
Furthermore, the gear baffle is fixedly connected to the outer end face of the step shaft through a fastening bolt, and three threaded holes corresponding to the fastening bolt are formed in the outer end face of the step shaft.
Further, the step shaft is in interference connection with the pump body.
Furthermore, the step shaft is positioned through a positioning screw, and the positioning screw is fastened on the pump body through a locknut.
Furthermore, a retainer ring and a locking nut are sequentially arranged on the end part of the step shaft in the pump body.
Further, a plug is arranged in one end part of the lubricating oil hole A.
The utility model adopts the above technical scheme after, compare with prior art, have following advantage:
high-pressure oil in the pump body can enter the lubricating oil hole A in the step shaft through the lubricating oil hole B and then reach the inner surface of the bushing through the annular groove on the bushing, so that the full lubricating effect is achieved; the outer circle of the bushing is in interference connection with the inner hole of the intermediate gear, the inner hole of the bushing is in clearance connection with the outer circle of the step shaft, a proper clearance is guaranteed between the bushing and the step shaft, lubricating oil is filled in the clearance, and when the intermediate gear and the bushing rotate around the step shaft together, the rotary friction surface can be sufficiently lubricated, the abrasion of the intermediate gear is reduced, the working reliability is improved, the service life of the intermediate gear can be effectively prolonged, and the service life of the oil pump is further prolonged.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a structural sectional view of the bush.
Fig. 3 is a structural sectional view of the step shaft.
In the figure, 1-fastening bolt, 2-gear baffle, 3-plug, 4-intermediate gear, 5-bushing and 6-pump body; 7-positioning screw, 8-locknut, 9-step shaft, 10-check ring, 11-locking nut, 12-lubricating oil hole A, 13-annular groove and 14-lubricating oil hole B.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1-3, the utility model provides an oil pump intermediate gear's mounting structure, including intermediate gear 4, intermediate gear 4 cover is established on one side of step axle 9, and the opposite side of step axle 9 is worn to establish in the pump body 6.
The step shaft 9 is provided with a circular step, and the position of the step is controlled to adjust the appropriate rotating clearance of the intermediate gear 4 during working, so that the intermediate gear 4 can normally rotate at high speed without clamping stagnation and abrasion.
The intermediate gear 4 is fastened on the step shaft 9 through the gear baffle 2 and the fastening bolt 1. The gear baffle 2 is fixedly connected to the outer end face of the step shaft 9 through the fastening bolt 1, and three threaded holes corresponding to the fastening bolt 1 are formed in the outer end face of the step shaft 9.
The inner hole of the bush 5 is in clearance connection with the outer circle of the step shaft 9, the outer circle of the bush 5 is in interference connection with the inner hole of the intermediate gear 4, and the bush 5 rotates around the step shaft 9 along with the intermediate gear 4.
And an annular groove 13 is formed in the inner wall of the lining 5.
And a lubricating oil hole A12 is formed in the step shaft 9, and the lubricating oil hole A12 is communicated with an annular groove 13 in the inner wall of the bushing 5.
The inner hole of the lubricating bush 5 is lubricated by leading oil through the lubricating oil hole A12, the annular groove 13 can lead the pressure oil of the lubricating oil hole A12 to the inner surface of the bush 5 for a circle, so that the gap between the bush 5 and the step shaft 9 is filled with the lubricating oil, and when the intermediate gear 4 and the bush 5 rotate around the step shaft 9 together, the rotary friction surface can be sufficiently lubricated, the abrasion is reduced, and the working reliability is improved.
The step shaft 9 is in interference connection with the pump body 6, the step shaft 9 is located through the positioning screw 7, the positioning screw 7 is fastened on the pump body 6 through the locknut 8, the positioning screw 7 is prevented from loosening, and the step shaft 9 is firmly fixed in the pump body 6 and cannot generate axial displacement.
A plug 3 is arranged in one end part of the lubricating oil hole A12.
A high-pressure oil cavity and a lubricating oil hole B14 which are communicated are formed in the pump body 6, and one end of the lubricating oil hole B14 is communicated with the lubricating oil hole A12.
The utility model discloses a concrete theory of operation:
when the pump works, high-pressure oil in the pump body 6 can enter the lubricating oil hole A12 in the step shaft 9 through the lubricating oil hole B14 and then reach the inner surface of the bush 5 through the annular groove 13 on the bush 5, so that the full-lubricating effect is achieved. The outer circle of the bushing 5 is in interference connection with the inner hole of the intermediate gear 4, the inner hole of the bushing 5 is in clearance connection with the outer circle of the step shaft 9, a proper clearance is guaranteed between the bushing 5 and the step shaft 9, lubricating oil is filled in the clearance, and when the intermediate gear 4 and the bushing 5 rotate around the step shaft 9 together, the rotating friction surface can be fully lubricated, abrasion is reduced, and working reliability is improved.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (9)
1. Oil pump intermediate gear's mounting structure, including intermediate gear (4), its characterized in that: the intermediate gear (4) is sleeved on one side of the step shaft (9), and the other side of the step shaft (9) is arranged in the pump body (6) in a penetrating manner;
the intermediate gear (4) is connected with the step shaft (9) through a bushing (5), an inner hole of the bushing (5) is in clearance connection with an outer circle of the step shaft (9), and the outer circle of the bushing (5) is in interference connection with the inner hole of the intermediate gear (4);
an annular groove (13) is arranged on the inner wall of the bush (5), and a lubricating oil hole A (12) communicated with the annular groove (13) is arranged in the step shaft (9); a high-pressure oil cavity and a lubricating oil hole B (14) are communicated with each other in the pump body (6), and the lubricating oil hole B (14) is communicated with the lubricating oil hole A (12).
2. The oil pump intermediate gear mounting structure according to claim 1, wherein: the step shaft (9) is provided with a circular step.
3. The mounting structure of an oil pump intermediate gear according to claim 1, characterized in that: the lining (5) is made of PTFE material.
4. The mounting structure of an oil pump intermediate gear according to claim 1, characterized in that: the intermediate gear (4) is fastened on the step shaft (9) through a gear baffle (2) and a fastening bolt (1).
5. The mounting structure of an oil pump intermediate gear according to claim 4, characterized in that: the gear baffle (2) is fixedly connected to the outer end face of the step shaft (9) through the fastening bolt (1), and three threaded holes corresponding to the fastening bolt (1) are formed in the outer end face of the step shaft (9).
6. The mounting structure of an oil pump intermediate gear according to claim 1, characterized in that: the step shaft (9) is in interference connection with the pump body (6).
7. The mounting structure of an oil pump intermediate gear according to claim 6, characterized in that: the step shaft (9) is positioned through a positioning screw (7), and the positioning screw (7) is fastened on the pump body (6) through a locknut (8).
8. The mounting structure of an oil pump intermediate gear according to claim 1, characterized in that: and the end part of the step shaft (9) positioned in the pump body (6) is sequentially provided with a check ring (10) and a locking nut (11).
9. The mounting structure of an oil pump intermediate gear according to claim 1, characterized in that: a plug (3) is arranged in one end part of the lubricating oil hole A (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222785590.6U CN218720540U (en) | 2022-10-22 | 2022-10-22 | Mounting structure of intermediate gear of oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222785590.6U CN218720540U (en) | 2022-10-22 | 2022-10-22 | Mounting structure of intermediate gear of oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218720540U true CN218720540U (en) | 2023-03-24 |
Family
ID=85588680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222785590.6U Active CN218720540U (en) | 2022-10-22 | 2022-10-22 | Mounting structure of intermediate gear of oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218720540U (en) |
-
2022
- 2022-10-22 CN CN202222785590.6U patent/CN218720540U/en active Active
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