CN221277834U

CN221277834U - Camshaft with lubricating oil duct

Info

Publication number: CN221277834U
Application number: CN202323437665.2U
Authority: CN
Inventors: 周瑜
Original assignee: Jiangsu Xiake Power Technology Co ltd
Current assignee: Jiangsu Xiake Power Technology Co ltd
Priority date: 2023-12-15
Filing date: 2023-12-15
Publication date: 2024-07-05
Anticipated expiration: 2033-12-15

Abstract

The utility model discloses a cam shaft with a lubricating oil duct, which comprises a cam shaft body arranged in a single-cylinder diesel engine body, wherein an inner cavity of the cam shaft body is provided with a lubricating oil duct for lubricating oil passing through between the cam shaft body and a supporting hole of a gear chamber cover of the single-cylinder diesel engine, the inner cavity of the cam shaft body is also provided with a central hole for conveying lubricating oil from the rear end of the cam shaft body to the front end of the cam shaft body, the inner cavity of the cam shaft body is also provided with three lubricating oil ducts communicated with the central hole, and the three lubricating oil ducts are respectively a first lubricating oil duct for lubricating a cam shaft timing gear of the single-cylinder diesel engine, a second lubricating oil duct for lubricating a first tappet of the diesel engine and an exhaust cam and a third lubricating oil duct for lubricating a second tappet of the diesel engine and an air inlet cam. The camshaft can be ensured to be continuously lubricated by arranging the lubricating oil duct in the inner cavity of the camshaft.

Description

Camshaft with lubricating oil duct

Technical Field

The utility model relates to the technical field of camshaft lubrication of single-cylinder diesel engines, in particular to a camshaft with a lubrication oil duct.

Background

The single-cylinder diesel engine is mainly applied to the fields of agricultural machinery, engineering machinery, automobile industry, ship machinery, electric power industry and the like. The cam shaft is a driving component of the oil supply system of the single-cylinder diesel engine and plays an important role. However, bearings are arranged at two ends of a camshaft of the existing single-cylinder diesel engine in the market at present, the cost of the bearings is high, the assembly is complicated, and once the bearings fail, the bearings are difficult to disassemble.

Disclosure of utility model

The utility model aims to solve the technical problems that: in order to solve the problems in the prior art, the camshaft with the lubricating oil duct is provided, bearings are not needed at two ends of the camshaft, continuous lubrication of the camshaft can be ensured by arranging the lubricating oil duct in an inner cavity of the camshaft, friction loss is reduced, and reliability of the whole machine is effectively improved.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a camshaft with lubricated oil duct, includes the camshaft body of installing in single cylinder diesel engine organism, the inner chamber of camshaft body is equipped with one and supplies lubricating oil circuit that lubricating oil passes through and is used for lubricating between camshaft body and the single cylinder diesel engine gear chamber lid supporting hole, and the inner chamber of camshaft body still is equipped with one and is used for carrying lubricating oil from the rear end of camshaft body towards the front end of camshaft body's centre bore, and the inner chamber of camshaft body still is equipped with three lubricated oil duct that is linked together with the centre bore, three lubricated oil duct is the first lubricated oil duct that is used for lubricating the camshaft timing gear of single cylinder diesel engine respectively, is used for carrying out lubricated second lubricated oil duct between the first tappet of diesel engine and the exhaust cam and is used for carrying out lubricated third lubricated oil duct between the second tappet of diesel engine and the intake cam.

Further specifically defined, in the above technical solution, a center line of the lubrication oil path is perpendicular to a center line of the camshaft body.

Further specifically defined, in the above technical solution, a center line of the central hole is parallel to a center line of the camshaft body.

Further specifically defined, in the above technical solution, the center line of the first lubrication oil duct is perpendicular to the center line of the center hole, and the first lubrication oil duct is communicated with the center oil duct hole reserved on the cam shaft timing gear of the single-cylinder diesel engine.

Further specifically defined, in the above technical solution, a center line of the second lubrication oil passage is obliquely intersected with a center line of the center hole, the second lubrication oil passage is located at a rear side of the exhaust cam, and the second lubrication oil passage is adjacent to the first tappet and the exhaust cam.

Further specifically defined, in the above technical solution, a center line of the third lubrication oil passage is obliquely intersected with a center line of the center hole, the third lubrication oil passage is located at a front side of the intake cam, and the third lubrication oil passage is adjacent to the second tappet and the intake cam.

The beneficial effects of the utility model are as follows: according to the camshaft with the lubricating oil duct, bearings are not needed at two ends of the camshaft, the lubricating oil duct is arranged in the inner cavity of the camshaft, and part of lubricating oil is shunted to the relevant moving parts of the camshaft through the main lubricating oil duct, so that continuous lubrication of the camshaft is efficiently and reliably ensured, friction loss is reduced, and the reliability of the whole camshaft is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

FIG. 1 is a schematic view of a camshaft with a lubrication gallery mounted on a single cylinder diesel engine;

FIG. 2 is a cross-sectional view at A-A in FIG. 1;

Fig. 3 is a partial enlarged view of fig. 2.

The reference numerals in the drawings are: 1. a single cylinder diesel engine body; 2. a camshaft body; 3. a central bore; 4. cam shaft timing gears; 5. a first lubrication oil passage; 6. a first tappet; 7. an exhaust cam; 8. a second lubrication oil passage; 9. a second tappet; 10. an intake cam; 11. a third lubrication oil passage; 12. an oil pump; 13. a first oil passage; 14. crankshaft oil seal; 15. a second oil passage; 16. a first plug; 17. a second plug; 18. an oil pump cam.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "one side", "the other side", "the two sides", "the middle", "the upper end", "the lower end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, 2 and 3, the camshaft with lubrication oil duct of the present utility model includes a camshaft body 2 installed in a single cylinder diesel engine body 1, an inner cavity of the camshaft body 2 is provided with a lubrication oil path for lubricating between the camshaft body 2 and a single cylinder diesel engine gear chamber cover supporting hole, the inner cavity of the camshaft body 2 is also provided with a central hole 3 for conveying lubrication oil from a rear end of the camshaft body 2 to a front end of the camshaft body 2, the inner cavity of the camshaft body 2 is also provided with three lubrication oil ducts communicated with the central hole 3, and the three lubrication oil ducts are respectively a first lubrication oil duct 5 for lubricating a camshaft timing gear 4 of the single cylinder diesel engine, a second lubrication oil duct 8 for lubricating between a first tappet 6 and an exhaust cam 7 of the diesel engine, and a third lubrication oil duct 11 for lubricating between a second tappet 9 and an intake cam 10 of the diesel engine.

Wherein the first lubrication oil passage 5, the second lubrication oil passage 8, and the third lubrication oil passage 11 are distributed in order from the rear to the front along the camshaft body 2. The center line of the lubrication oil path is perpendicular to the center line of the camshaft body 2. The center line of the center hole 3 is parallel to the center line of the camshaft body 2. The central line of the first lubricating oil duct 5 is perpendicular to the central line of the central hole 3, and the first lubricating oil duct 5 is communicated with a central oil duct hole reserved on a cam shaft timing gear 4 of the single-cylinder diesel engine. The center line of the second lubrication oil passage 8 obliquely intersects with the center line of the center hole 3, the second lubrication oil passage 8 is located at the rear side of the exhaust cam 7, and the second lubrication oil passage 8 is adjacent to the first tappet 6 and the exhaust cam 7. The center line of the third lubrication oil passage 11 obliquely intersects with the center line of the center hole 3, the third lubrication oil passage 11 is located on the front side of the intake cam 10, and the third lubrication oil passage 11 is adjacent to the second lifter 9 and the intake cam 10.

The working principle of the camshaft with the lubricating oil duct is as follows: the lubricating oil of the camshaft is provided by an oil pump 12, an oil outlet of the oil pump 12 is connected with a first oil duct 13, the lubricating oil reaches a crankshaft oil seal 14 through the first oil duct 13 and enters the rear end of the camshaft through a second oil duct 15, a first plug 16 and a second plug 17 are arranged at a port of a diversion oil duct, the lubricating oil reaches the rear end of the camshaft and is divided into two paths, one path is perpendicular to the central line of the 7 camshaft body 2, lubrication between the camshaft body 2 and a single-cylinder diesel engine gear chamber cover supporting hole is formed, and the other path continuously flows to the front end of the camshaft along the central hole 3 of the camshaft body 2; when the lubricating oil reaches the central oil passage hole reserved in the cam shaft timing gear 4, the lubricating oil directly flows to the tooth root, the tooth side and the tooth top of the cam shaft timing gear 4, and the lubricating oil is continuously and stably conveyed to the whole gear train through gear rotation; when the lubricating oil reaches the flow dividing hole at the rear end of the exhaust cam 7, the lubricating oil directly flows between the first tappet 6 and the exhaust cam 7 to form lubrication, and part of the lubricating oil rebounds through the first tappet 6 to form effective lubrication on the oil pump cam 18; when the lubricating oil reaches the front end split hole of the air inlet cam 10, the lubricating oil directly flows between the second tappet 9 and the air inlet cam 10 to form lubrication, part of the lubricating oil rebounds through the second tappet 9 to form effective lubrication on the oil pump cam 18, and finally the lubricating oil reaches the front end of the camshaft and flows along the direction vertical to the central line of the camshaft body 2 to form effective lubrication between the front end of the camshaft and the single-cylinder diesel engine body 1.

This camshaft with lubricated oil duct, the both ends of camshaft need not the bearing, are equipped with lubricated oil duct through the inner chamber at the camshaft body, shunt partial lubricating oil to camshaft relevant motion spare department through main lubricated oil circuit, high-efficient, reliable assurance camshaft's continuous lubrication reduces friction loss, effectively promotes the reliability of complete machine.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A camshaft with lubrication oil duct, characterized by: including installing camshaft body (2) in single cylinder diesel engine organism (1), the inner chamber of camshaft body (2) is equipped with one and supplies lubricating oil to pass through and be used for carrying out lubricated oil circuit between camshaft body (2) and the single cylinder diesel engine gear chamber lid supporting hole, and the inner chamber of camshaft body (2) still is equipped with one and is used for carrying out the centre bore (3) of lubricating oil from the rear end of camshaft body (2) toward the front end of camshaft body (2), and the inner chamber of camshaft body (2) still is equipped with three lubricated oil ducts that are linked together with centre bore (3), three lubricated oil ducts are first lubricated oil duct (5) that are used for lubricating camshaft timing gear (4) of single cylinder diesel engine respectively, are used for carrying out lubricated second lubricated oil duct (8) between first tappet (6) and exhaust cam (7) of diesel engine and are used for carrying out lubricated third lubricated oil duct (11) between second tappet (9) and intake cam (10) of diesel engine.

2. The camshaft with a lubrication oil passage according to claim 1, characterized in that: the center line of the lubricating oil way is perpendicular to the center line of the camshaft body (2).

3. The camshaft with a lubrication oil passage according to claim 1, characterized in that: the center line of the center hole (3) is parallel to the center line of the cam shaft body (2).

4. A camshaft with a lubrication oil passage according to claim 3, characterized in that: the central line of the first lubricating oil duct (5) is perpendicular to the central line of the central hole (3), and the first lubricating oil duct (5) is communicated with the central oil duct hole reserved on the cam shaft timing gear (4) of the single-cylinder diesel engine.

5. A camshaft with a lubrication oil passage according to claim 3, characterized in that: the center line of the second lubricating oil duct (8) is obliquely intersected with the center line of the center hole (3), the second lubricating oil duct (8) is positioned at the rear side of the exhaust cam (7), and the second lubricating oil duct (8) is adjacent to the first tappet (6) and the exhaust cam (7).

6. The camshaft with a lubrication oil passage according to claim 4, wherein: the center line of the third lubricating oil duct (11) is obliquely intersected with the center line of the center hole (3), the third lubricating oil duct (11) is positioned on the front side of the air inlet cam (10), and the third lubricating oil duct (11) is adjacent to the second tappet (9) and the air inlet cam (10).