CN218787309U - Lubricating structure of engine main shaft assembly and auxiliary shaft assembly - Google Patents

Abstract

The utility model provides a lubricating structure of engine main shaft subassembly and countershaft subassembly belongs to engine technical field. The lubricating device solves the problem that the lubricating effect of a main shaft assembly and a secondary shaft assembly of the existing engine is poor. The engine comprises a box body and a cylinder body fixedly connected to the top of the box body, a main shaft assembly and an auxiliary shaft assembly are meshed with each other and are installed in the box body, a lubricating structure comprises an oil return channel in a cylinder wall of the cylinder body, an oil outlet of the oil return channel penetrates through the inner wall of the box body, the oil outlet is located right above the main shaft assembly, a section of oil guide surface which is arc-shaped is arranged on the inner wall of the box body, the oil guide surface is located above the auxiliary shaft assembly and is close to the auxiliary shaft assembly, and an arc-shaped notch of the oil guide surface faces towards the main shaft assembly. The lubricating structure has the advantage of improving the lubricating effect of the main shaft assembly and the auxiliary shaft assembly.

Description

Lubricating structure of engine main shaft assembly and auxiliary shaft assembly

Technical Field

The utility model belongs to the technical field of the engine, a lubricating structure of engine main shaft subassembly and countershaft subassembly is related to.

Background

The engine is a machine capable of converting other forms of energy into mechanical energy, the motorcycle engine is used as a power device when a motorcycle runs, and when the engine works, various parts in the engine need to be lubricated by lubricating oil.

For example, chinese patent literature discloses a lubricating oil cooling system for a motorcycle engine [ application number: 201020211793.9; authorization notice number: CN201696138U ], an oil inlet of the first chamber of the oil pump is communicated with an oil outlet of the primary oil filter, and an oil outlet of the first chamber of the oil pump is communicated with an oil inlet of the external oil tank; a first oil outlet of the external oil tank is communicated with an oil inlet of a second cavity of the oil pump, and a second oil outlet of the external oil tank is communicated with an external oil inlet of the cylinder head; the oil outlet of the second cavity of the oil pump is communicated with the oil inlet of the oil filter, the crankcase cover oil duct communicated with the oil outlet of the oil filter is divided into two paths, one path is communicated with the oil inlet of the crankshaft roller pin, the other path is connected with the oil inlet of the three-way outer oil pipe, the first oil outlet of the three-way outer oil pipe is communicated with the oil holes of the main shaft and the auxiliary shaft, and the second oil outlet of the three-way outer oil pipe is communicated with the camshaft oil duct.

According to the lubricating oil cooling system with the structure, part of lubricating oil is conveyed into the cylinder body through the second oil outlet of the three-way outer oil pipe under the action of the engine oil pump, then enters the rocker arm chamber of the cylinder head through the cylinder body oil passage, the cylinder head oil passage and the camshaft oil passage, the rest 1/2 of lubricating oil in the external oil tank enters the rocker arm chamber of the cylinder head through the third outer oil pipe, the cam, the rocker arm and the push rod or the lower rocker arm and the cam friction pair are subjected to wheel slip, then the lubricating oil directly flows back to the bottom in the crankcase, and is subjected to circulating lubrication again after passing through the engine oil filter and the engine oil pump.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide an engine main shaft subassembly and countershaft subassembly's lubricating structure, the technical problem of solution is how to improve main shaft subassembly and countershaft subassembly's lubricated effect.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides an engine main shaft subassembly and countershaft subassembly's lubricating structure, the engine includes the box and links firmly the cylinder body at the box top, main shaft subassembly and countershaft subassembly intermeshing and install in the box, its characterized in that, lubricating structure includes oil return channel in the cylinder body cylinder wall, oil-out of oil return channel runs through the inner wall of box, the oil-out is located main shaft subassembly directly over, one section oil guide face that is the arc form has on the inner wall of box, oil guide face is located the top of countershaft subassembly and is close to the countershaft subassembly setting, oil guide face's arc notch is towards main shaft subassembly.

Lubricating oil after lubricating parts in an engine cylinder flows into the oil return channel, the lubricating oil flows out from an oil outlet of the oil return channel, the oil outlet is positioned right above the main shaft assembly, the lubricating oil flows onto the main shaft assembly, and the main shaft assembly is in rotary work and is meshed with the auxiliary shaft assembly, so that the meshing position of the main shaft assembly and the auxiliary shaft assembly is lubricated by the lubricating oil. Because the arc notch of leading the oil level is towards main shaft assembly, and lead the top that the oil level is located the countershaft subassembly, main shaft assembly's rotation can throw away part lubricating oil along the tangential direction, the lubricating oil that splashes is thrown away on leading the oil level, it can drop on the countershaft subassembly to lead the lubricating oil on the oil level after accumulating to the certain degree, flow again and lubricate the meshing department of main shaft assembly and countershaft subassembly, guarantee the lubricating oil volume on the countershaft subassembly, the volume of the lubricating oil that makes on main shaft assembly and the countershaft subassembly is as impartial as far as, further improve main shaft assembly and countershaft subassembly's lubricated effect.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the oil guide surface is arranged around the gear of the auxiliary shaft assembly, the top of the oil guide surface is positioned right above the auxiliary shaft assembly, and the distance from the top of the oil guide surface to the auxiliary shaft assembly is larger than the distance from the bottom of the oil guide surface to the auxiliary shaft assembly. This kind of structure makes main shaft assembly can be better get rid of lubricating oil on leading the oil level to make the lubricating oil that leads on the oil level can be better drop on the countershaft subassembly, guarantee the lubricated oil mass on the countershaft subassembly, make the quantity of lubricating oil on main shaft assembly and the countershaft subassembly as far as impartial, improve main shaft assembly and countershaft subassembly's lubricated effect.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, a section of planar oil passing surface is further arranged on the inner wall of the box body, one end of the oil passing surface is connected with the oil outlet of the oil return channel, the other end of the oil passing surface is connected with the oil guide surface, and the oil passing surface is obliquely and downwards obliquely arranged along the direction from the oil outlet to the oil guide surface. This kind of structure crosses the oil level and plays the effect of transition, makes the oil-out of oil return passageway can be better with lead the oil level and be connected, and the lubricating oil that part flowed out from the oil-out of oil return passageway can flow to the oil level through crossing the oil level, makes the box convenient at this department of this manufacturing simultaneously, and has sufficient intensity.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the oil passing surface is positioned right above the meshing part of the main shaft assembly and the auxiliary shaft assembly. The lubricating oil on the oil passing surface can directly fall into the meshing position between the main shaft assembly and the auxiliary shaft assembly, and the lubricating effect of the main shaft assembly and the auxiliary shaft assembly is improved.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the inner wall of the box body at the circumferential edge of the oil outlet of the oil return channel protrudes downwards to form the oil guide part, and the oil guide part is positioned right above the main shaft assembly. Lubricating oil that the oil return passage oil-out flows can collide with leading oil portion, leads the flow direction of oil portion standard lubricating oil, guarantees that lubricating oil drops on the main shaft subassembly along vertical direction, improves the lubricated effect of main shaft subassembly and countershaft subassembly.

In the lubricating structure for the main shaft assembly and the auxiliary shaft assembly of the engine, the oil guide part has a cross section in the horizontal direction of 21274, and one side of the oil guide part facing the oil guide surface is provided with an opening. When lubricating oil drops on the main shaft subassembly, partial lubricating oil can be got rid of by the main shaft subassembly, open-ended setting and opening are towards to the oil guide surface, make the oil guide portion can not block the lubricating oil that gets rid of, guarantee that lubricating oil can get rid of on the oil guide surface, the lubricating oil that the return oil passageway oil-out was washed out simultaneously hits and leads behind the oil guide portion, the part can flow to the oil guide surface from the opening, guarantee the lubricating oil volume on the countershaft subassembly, the volume of the lubricating oil that makes on main shaft subassembly and the countershaft subassembly is impartial as far as, improve the lubricated effect of main shaft subassembly and countershaft subassembly.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the inner wall of the box body is further provided with a pair of reinforcing ribs which are downward protruded and are in a long strip shape, the length direction of each reinforcing rib faces the direction of the oil guide surface along the oil guide part, and the pair of reinforcing ribs are respectively positioned at two sides of the opening of the oil guide part. The strengthening rib sets up and plays the intensity that increases the box and be located at the oil guide portion, and the strengthening rib also plays the effect of direction simultaneously, makes lubricating oil flow to the oil guide surface according to the direction of setting for, guarantees the lubricated oil mass on the countershaft subassembly, improves main shaft assembly and countershaft subassembly's lubricated effect.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the oil return channel is obliquely and downwardly arranged along the direction from the auxiliary shaft assembly to the main shaft assembly, and the oil guide part is vertically and downwardly arranged. The cylinder body is obliquely arranged, the arrangement mode of the oil return channel is matched with that of the cylinder body, and the flow rate of lubricating oil in the oil return channel is ensured; the oil guide part is vertically arranged downwards, so that lubricating oil in the oil return channel is enabled to fall on the main shaft assembly after rushing out, and the lubricating effect of the main shaft assembly and the auxiliary shaft assembly is improved.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, a connecting line of the main shaft assembly and the auxiliary shaft of the auxiliary shaft assembly is along the horizontal direction, the overall outer diameter of the main shaft assembly is smaller than that of the auxiliary shaft assembly, the bottom of the oil guide part is basically flush with the top of the auxiliary shaft assembly along the vertical direction, and a set distance is formed between the bottom of the oil guide part and the main shaft assembly. The space is reasonably utilized, so that the oil guide part has the best oil guide effect and can not block lubricating oil thrown out by the main shaft assembly; by substantially flush it is meant that the distance between the bottom of the oil guide and the top of the countershaft assembly does not exceed one centimeter.

In the lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine, the bottom of the box body is fixedly connected with an oil pan, the oil pan is communicated with a cavity inside the box body, and lubricating oil in the oil pan can be conveyed into an oil return channel through an oil pump. The lubricating oil in the oil pan is conveyed into the cylinder body through the oil pump, the lubricating oil lubricates parts in the cylinder body and then flows into the oil return channel, then flows to the main shaft assembly and the auxiliary shaft assembly along the oil return channel, and finally falls into the oil pan under the action of self gravity to form a cycle.

Compared with the prior art, the utility model provides a pair of engine main shaft subassembly and countershaft subassembly's lubricating structure has following advantage:

1. the lubricating structure utilizes lubricating oil in an oil return channel of an engine cylinder to lubricate the main shaft assembly and the auxiliary shaft assembly again, which is equivalent to performing multiple lubrication on the main shaft assembly and the auxiliary shaft assembly, improving the lubricating effect of the main shaft assembly and the auxiliary shaft assembly, and simultaneously improving the cooling effect of the main shaft assembly and the auxiliary shaft assembly.

2. The lubricating structure is characterized in that the oil outlet hole of the oil return channel is provided with the oil guide part with the cross section of a shape of \ 21274and the oil guide part ensures that lubricating oil drops on the main shaft assembly, the oil guide part cannot block thrown lubricating oil, the lubricating oil quantity on the auxiliary shaft assembly is ensured, the lubricating oil quantities on the main shaft assembly and the auxiliary shaft assembly are equal as much as possible, and the lubricating effect of the main shaft assembly and the auxiliary shaft assembly is improved.

Drawings

Fig. 1 is a partial structural sectional view of the present engine.

Fig. 2 is an overall structural schematic diagram of the present lubricating structure.

Fig. 3 is a schematic structural view of the oil guide portion and the reinforcing rib of the lubricating structure.

In the figure, 1, a box body; 2. a cylinder body; 3. a spindle assembly; 31. a main shaft; 4. a countershaft assembly; 41. a gear; 42. a counter shaft; 5. an oil return passage; 51. an oil outlet; 6. oil guiding surface; 7. oil surface treatment; 8. an oil guide part; 81. an opening; 9. reinforcing ribs; 10. an oil pan.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the engine includes a case 1, a cylinder block 2 fixedly connected to the top of the case 1, an oil pan 10 fixedly connected to the bottom of the case 1, and an oil pump disposed in the oil pan 10, wherein the oil pan 10 is communicated with a cavity inside the case 1, a main shaft assembly 3 and a counter shaft assembly 4 are engaged with each other and mounted in the case 1, a connection line between a main shaft 31 of the main shaft assembly 3 and a counter shaft 42 of the counter shaft assembly 4 is along a horizontal direction, and the overall outer diameter of the main shaft assembly 3 is smaller than the overall outer diameter of the counter shaft assembly 4. The lubricating structure of the main shaft assembly 3 and the auxiliary shaft assembly 4 of the engine comprises an oil return channel 5, an oil guide surface 6, an oil passing surface 7 and an oil guide part 8.

As shown in fig. 2, the oil return channel 5 is located in the cylinder wall of the cylinder body 2, the oil return channel 5 is obliquely and downwardly arranged along the direction from the auxiliary shaft assembly 4 to the main shaft assembly 3, an oil outlet 51 of the oil return channel 5 penetrates through the inner wall of the box body 1, the inner wall of the box body 1 at the circumferential edge of the oil outlet 51 of the oil return channel 5 protrudes downwardly to form an oil guide portion 8, the oil guide portion 8 is vertically and downwardly arranged, the oil outlet 51 and the oil guide portion 8 are both located right above the main shaft 31 of the main shaft assembly 3, the bottom of the oil guide portion 8 is substantially flush with the top of the auxiliary shaft assembly 4 along the vertical direction, and a set distance is provided between the bottom of the oil guide portion 8 and the main shaft assembly 3. The oil guide 8 has a cross section in the horizontal direction of 21274and has an opening 81 on the side of the oil guide 8 facing the oil guide surface 6.

The inner wall of the box body 1 is provided with an arc-shaped oil guide surface 6 and a planar oil passing surface 7, the oil passing surface 7 is positioned between the oil guide surface 6 and an oil outlet 51 of the oil return channel 5, the oil passing surface 7 is positioned right above the meshing part of the main shaft assembly 3 and the auxiliary shaft assembly 4, one end of the oil passing surface 7 is connected with the oil outlet 51 of the oil return channel 5, the other end of the oil passing surface 7 is connected with the oil guide surface 6, and the oil passing surface 7 slantly and downwards inclines towards the oil guide surface 6 along the oil outlet 51. Oil guide surface 6 is located above countershaft assembly 4 and is close to countershaft assembly 4 and sets up, and oil guide surface 6 arranges around gear 41 of countershaft assembly 4, and the arc recess of oil guide surface 6 is towards main shaft assembly 3, and the top of oil guide surface 6 is located directly over countershaft assembly 4, and the distance between oil guide surface 6 top to countershaft assembly 4 is greater than the distance between oil guide surface 6 bottom to countershaft assembly 4.

As shown in fig. 3, the inner wall of the casing 1 further has a pair of ribs 9 protruding downward and having a long shape, the longitudinal direction of the ribs 9 is along the direction from the oil guiding portion 8 to the oil guiding surface 6, the pair of ribs 9 are respectively located on two sides of the opening 81 of the oil guiding portion 8, and a set distance is provided between each pair of ribs 9 and the oil guiding portion 8.

In operation, the lubricant in the oil pan 10 is delivered to the cylinder 2 through a part of the oil pump to lubricate the parts in the cylinder 2, the part of the lubricant then flows into the return passage 5, and then lubricates the main shaft assembly 3 and the auxiliary shaft assembly 4 through the cooperation of the oil outlet 51, the oil guide 8, the oil passing surface 7 and the oil guide surface 6, and finally the lubricant drops back into the oil pan 10 under the action of its own weight. Meanwhile, lubricating oil in the oil pan 10 is conveyed to the oil channels of the main shaft 31 in the main shaft assembly 3 and the auxiliary shaft 42 in the auxiliary shaft assembly 4 through a part of the oil pump, the main shaft 31 and the auxiliary shaft 42 throw the lubricating oil out of the oil holes to lubricate the main shaft assembly 3 and the auxiliary shaft assembly 4 when rotating, and finally the lubricating oil falls back to the oil pan 10 under the action of self gravity.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the case 1, the cylinder block 2, the main shaft assembly 3, the main shaft 31, the auxiliary shaft assembly 4, the gear 41, the auxiliary shaft 42, the oil return passage 5, the oil outlet 51, the oil guide surface 6, the oil passing surface 7, the oil guide portion 8, the opening 81, the reinforcing rib 9, the oil pan 10, and the like are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides an engine main shaft subassembly and countershaft subassembly's lubricating structure, the engine includes box (1) and links firmly cylinder body (2) at box (1) top, main shaft subassembly (3) and countershaft subassembly (4) intermeshing just install in box (1), its characterized in that, lubricating structure include oil return channel (5) in the cylinder wall of cylinder body (2), the inner wall of box (1) is run through in oil-out (51) of oil return channel (5), oil-out (51) are located main shaft subassembly (3) directly over, it leads oil level (6) that one section is the arc form to have on the inner wall of box (1), lead oil level (6) and be located the top of countershaft subassembly (4) and be close to countershaft subassembly (4) and set up, lead the arc notch of oil level (6) towards main shaft subassembly (3).

2. The lubrication structure of the main shaft assembly and the auxiliary shaft assembly of the engine according to claim 1, wherein the oil guide surface (6) is arranged around the gear (41) of the auxiliary shaft assembly (4), the top of the oil guide surface (6) is positioned right above the auxiliary shaft assembly (4), and the distance from the top of the oil guide surface (6) to the auxiliary shaft assembly (4) is larger than the distance from the bottom of the oil guide surface (6) to the auxiliary shaft assembly (4).

3. The lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine according to claim 1 or 2, wherein a section of planar oil passing surface (7) is further arranged on the inner wall of the box body (1), one end of the oil passing surface (7) is connected with the oil outlet (51) of the oil return channel (5), the other end of the oil passing surface is connected with the oil guide surface (6), and the oil passing surface (7) is obliquely and downwards inclined along the direction of the oil outlet (51) towards the oil guide surface (6).

4. A lubrication arrangement for the main and auxiliary shaft assemblies of an engine according to claim 3, characterised in that the oil level (7) is located directly above the point where the main and auxiliary shaft assemblies (3, 4) mesh.

5. The lubricating structure for the main shaft assembly and the auxiliary shaft assembly of the engine as claimed in claim 1 or 2, wherein the inner wall of the box body (1) at the circumferential edge of the oil outlet (51) of the oil return channel (5) is protruded downwards to form an oil guide part (8), and the oil guide part (8) is positioned right above the main shaft assembly (3).

6. The lubrication structure of a main shaft assembly and a secondary shaft assembly of an engine according to claim 5, wherein the oil guide portion (8) has a cross section in a horizontal direction of a shape of a v (21274) and a side of the oil guide portion (8) facing the oil guide surface (6) has an opening (81).

7. The lubricating structure for the main shaft assembly and the auxiliary shaft assembly of the engine according to claim 5, wherein the inner wall of the box body (1) is further provided with a pair of reinforcing ribs (9) which are protruded downwards and are in a long strip shape, the length direction of the reinforcing ribs (9) is along the direction of the oil guide part (8) towards the oil guide surface (6), and the pair of reinforcing ribs (9) are respectively positioned at two sides of the opening (81) of the oil guide part (8).

8. The lubricating structure for the main shaft assembly and the auxiliary shaft assembly of the engine according to claim 5, wherein the oil return passage (5) is arranged obliquely downward in a direction of the auxiliary shaft assembly (4) toward the main shaft assembly (3), and the oil guide portion (8) is arranged vertically downward.

9. The lubricating structure for the main shaft assembly and the auxiliary shaft assembly of the engine according to claim 5, wherein a connecting line of the main shaft (31) of the main shaft assembly (3) and the auxiliary shaft (42) of the auxiliary shaft assembly (4) is along a horizontal direction, the outer diameter of the whole main shaft assembly (3) is smaller than that of the whole auxiliary shaft assembly (4), the bottom of the oil guiding part (8) is substantially flush with the top of the auxiliary shaft assembly (4) along a vertical direction, and a set distance is formed between the bottom of the oil guiding part (8) and the main shaft assembly (3).

10. The lubricating structure of the main shaft assembly and the auxiliary shaft assembly of the engine as claimed in claim 1 or 2, characterized in that an oil pan (10) is fixedly connected to the bottom of the box body (1), the oil pan (10) is communicated with a cavity inside the box body (1), and lubricating oil in the oil pan (10) can be conveyed to the oil return channel (5) through an oil pump.

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