Engine suitable for agricultural machinery

Abstract

The engine comprises an engine body, the upper end of the engine body is connected with a cylinder head, the two side faces of the engine body are connected with a side cover and a cooling fan respectively, the side cover is provided with a cam shaft hole, a crankshaft reserved boss and a standby groove, a cam shaft is installed in the cam shaft hole, and a crankshaft reserved boss is installed in the standby groove. The engine side cover comprises a crankshaft reserved boss and a camshaft hole, one end of the camshaft is installed in the engine body, the other end of the camshaft extends to the outer side of the side cover, installation reserved holes are distributed in the outer side of the crankshaft reserved boss and the outer side of the camshaft hole in a rectangular shape, and the installation reserved holes are used for fixing a sealing plate. According to the technical scheme, the problems that in the prior art, the cam shaft hole, the crankshaft reserved boss and the standby groove are formed in the side cover, the sealing plate is fixed to a hole needing to be sealed through the installation reserved hole, and therefore installation of different output shafts is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to an engine suitable for agricultural machinery use. Background Art

[0002] On agricultural machinery such as lawn mowers and harvesters, a small engine is usually used to control the speed of the harvesting device, and the speed of the crank is controlled by the piston. Therefore, a camshaft mounting hole is usually opened on the engine side cover, and the camshaft is used as the output shaft. The speed is controlled by transmission parts such as gears.

[0003] As for the output shaft speed, different customers have different needs. Therefore, different models of engines may have different requirements for the output shaft. The camshaft may be used as the output, or the crankshaft may be used as the output. This requires the manufacture of multiple different types of side covers to meet the installation of different output shafts, which greatly increases the production cost. Therefore, in order to meet the needs of different customers and reduce costs, this engine suitable for agricultural machinery use is designed. Utility Model Content

[0004] The purpose of the utility model is to provide an engine suitable for agricultural machinery use, by opening a camshaft hole, a crankshaft reserved boss and a spare groove on the side cover, and fixing a sealing plate on the hole to be blocked by installing the reserved hole, thereby realizing the installation of different output shafts, improving the application range of the side cover, and making it suitable for engines of different models.

[0005] The utility model provides the following technical solution: an engine suitable for agricultural machinery use, comprising a body, the upper end of the body is connected to a cylinder head, the two side surfaces of the body are respectively connected to a side cover and a cooling fan, the cooling fan is covered with an air guide cover, the upper end of the body is connected to an oil tank and a cooling water tank, the side of the cylinder head is also connected to an air filter, and is characterized in that a camshaft hole, a crankshaft reserved boss and a spare groove are opened on the side cover, a camshaft is installed in the camshaft hole, one end of the camshaft is installed in the body, and the other end of the camshaft extends to the outside of the side cover, and the crankshaft reserved boss and the outer side of the camshaft hole are both rectangularly distributed with installation reserved holes, and the installation reserved holes are used to fix a sealing plate.

[0006] In order to discharge the oil in the machine body, oil measuring ports are formed on both ends of the side cover facing outward, and an oil outlet hole is opened on the lower end of the side cover.

[0007] In order to improve the cooling efficiency of the bottom of the machine body, the machine body includes a machine base and a machine body main body, the machine body main body is formed on the machine base, a cooling hole is opened at the lower end of the side of the machine body, and the cooling hole extends downward to the lower end of the machine base.

[0008] In order to further enhance the air flow at the bottom of the body, laterally distributed reinforcing ribs are formed on the lower end of the body base, the lower end of the cooling hole is connected to the space between the reinforcing ribs, and heat dissipation ribs are connected between the reinforcing ribs. The heat dissipation ribs are vertically distributed, and the height of the heat dissipation ribs is less than the height of the reinforcing ribs.

[0009] In order to install the rocker arm, the cylinder head includes a cylinder head base, a closed-loop side wall is formed on the cylinder head base, two first rocker arm seats and two second rocker arm seats are formed on the bottom surface of the side wall, the two second rocker arm seats are located between the two first rocker arm seats, the two first rocker arm seats and the two second rocker arm seats are symmetrically distributed and are on the same straight line, and an oil inlet hole is opened on the upper end surface of the first rocker arm seat.

[0010] In order to enable the connecting rod to stir the lubricating oil when it rotates forward or reverse, a crankshaft is rotatably connected in the body, a connecting rod is connected to the crankshaft, the other end of the connecting rod is connected to the piston, the connecting rod includes a connecting rod body, one end of the connecting rod body is formed with a first connecting hole, the other end is connected to a tile cover, a second connecting hole is formed with the tile cover, an oil flinger spoon is formed on the tile cover, and the oil flinger spoon forms an obtuse angle of 125° to 145° with the connecting rod body.

[0011] In order to further increase the splashing area of ​​the lubricating oil, the oil-slinging spoon comprises a spoon handle and a spoon tip, the spoon handle is thicker than the spoon tip, and the spoon handle and the spoon tip are distributed at an obtuse angle.

[0012] In order to further expand the tumbling area of ​​the lubricating oil, an oil tumbling hole is also opened on the tile cover.

[0013] In order to filter the air entering the engine, the air filter includes a filter housing, the upper end of the filter housing is connected to an intake pipe, an air guide pipe is sleeved on the intake pipe, the lower end of the filter housing is connected to an oil reservoir, a ventilation pipe is formed in the filter housing, the ventilation pipe is connected to the intake pipe, the ventilation pipe is located above the oil reservoir, a filter element assembly is fixed on the surface of the ventilation pipe, and an exhaust port is opened on the surface of the filter housing, and the exhaust port is located above the filter element assembly.

[0014] In order to reduce the initial resistance of the air filter, the filter housing is stepped, including a first ring portion and a second ring portion distributed up and down, the diameter of the first ring portion is smaller than the second ring portion, the exhaust port is opened on the side of the first ring portion, and the filter element assembly is installed at the lower end of the first ring portion and abuts against the upper end surface of the second ring portion.

[0015] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0016] (1) By opening a camshaft hole, a crankshaft reserved boss and a spare groove on the side cover, and by setting a mounting reserved hole on the outer side of the crankshaft reserved boss and the camshaft hole, the sealing plate is fixed to the hole to be blocked through the mounting reserved hole, thereby achieving the installation of different output shafts. The side cover has a wide range of applications and can be applied to engines of different models, and does not require additional mold manufacturing, thereby reducing production costs;

[0017] (2) By opening cooling holes at the bottom of the side of the machine body, air is directed to the bottom surface of the machine body base, thereby improving the cooling efficiency of the bottom of the machine body and the oil inside it;

[0018] (3) By forming a first rocker arm seat and a second rocker arm seat on the same straight line on the cylinder head, the rocker arm shaft is easy to install and the installation strength of the rocker arm shaft is improved;

[0019] (4) By forming an oil-slinging spoon on the connecting rod at an angle of 125° to 145° with the connecting rod, the oil-slinging spoon can drive the oil to stir when the connecting rod rotates forward or reverse, splashing the oil into the engine body, thereby improving the lubrication effect;

[0020] (5) A stepped filter housing is provided to increase the diameter of the second ring portion, further increase the filtration area of ​​the filter element assembly, improve the filtration efficiency, and reduce the initial resistance of the air filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is a three-dimensional diagram of the overall structure of the engine of the utility model;

[0023] Figure 2 It is a three-dimensional diagram of the overall structure of the engine of the utility model from another perspective;

[0024] Figure 3 It is a front view of the side cover of the utility model;

[0025] Figure 4 It is a rear view of the side cover of the utility model;

[0026] Figure 5 It is a three-dimensional diagram of the body of the utility model;

[0027] Figure 6 It is a bottom view of the body of the utility model;

[0028] Figure 7 It is a three-dimensional diagram of the cylinder head of the utility model;

[0029] Figure 8 The utility model Figure 7 A partial enlarged schematic diagram of area A in the middle

[0030] Fig. 9 It is a schematic diagram of the structure inside the body of the utility model;

[0031] Fig.10 It is a three-dimensional diagram of the connecting rod of the utility model;

[0032] Fig.11 It is a front view of the connecting rod of the utility model;

[0033] Fig.12 It is a three-dimensional diagram of the air filter of the utility model;

[0034] Fig.13 It is a cross-sectional view of the air filter of the utility model;

[0035] In the figure: 1. Engine body; 11. Engine body base; 111. Reinforcement ribs; 112. Heat dissipation ribs; 12. Engine body; 13. Cooling holes; 14. Cylinder head connection seat; 2. Side cover; 21. Spare groove; 22. Crankshaft reserved boss; 23. Camshaft hole; 24. Installation reserved hole; 25. Rib; 26. Oil measuring port; 27. Oil outlet; 3. Cylinder head; 31. Cylinder head base; 32. Side wall; 33. Air inlet; 34. First rocker arm seat; 341. Oil inlet hole; 35. Second rocker arm seat; 36. Air outlet; 4. Camshaft ; 5. Air filter; 51. Air duct; 52. Intake pipe; 53. Filter housing; 531. Exhaust port; 532. Ventilation pipe; 533. First ring portion; 534. Second ring portion; 54. Oil reservoir; 55. Filter element assembly; 6. Air hood; 7. Cooling water tank; 8. Oil tank; 9. Crankshaft; 91. Connecting rod; 911. Connecting rod body; 9111. First connecting hole; 9112. Second connecting hole; 9113. Oil-slinging hole; 912. Waist cover; 9121. Oil-slinging spoon; 9122. Spoon handle; 9123. Spoon tip. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0037] See also Figures 1 to 4The utility model provides a technical solution: an engine suitable for agricultural machinery use, including a body 1, a cylinder head 3 is connected to the upper end of the body 1, and side covers 2 and cooling fans are respectively connected to the two side surfaces of the body 1, and the cooling fan is installed on the other end of the crankshaft 9. The cooling fan is covered with an air guide cover 6, and the air guide cover 6 blows air into the surface of the cylinder head 3 to cool the cylinder head 3. The upper end of the body 1 is connected to an oil tank 8 and a cooling water tank 7, and the side of the cylinder head 3 is also connected to an air filter 5, and the air filter 5 is used to filter the gas entering the cylinder head 3. A camshaft hole 23, a crankshaft reserved boss 22 and a spare groove 21 are opened on the side cover 2, and a camshaft 4 is installed in the camshaft hole 23. One end of the camshaft 4 is installed in the body 1, and the other end of the camshaft 4 extends to the outside of the side cover 2, and the back of the side cover 2 is connected to the camshaft hole 23, the crankshaft reserved boss 22 and the spare groove 21. A rib 25 is connected to the edge of the side cover to enhance the strength and rigidity of the side cover 2. The outer sides of the crankshaft reserved boss 22 and the camshaft hole 23 are provided with installation reserved holes 24 in a rectangular distribution. The installation reserved holes 24 are used to fix the sealing plate. The crankshaft reserved boss 22 and the spare groove 21 can be directly opened. The crankshaft reserved boss 22 is used to install the crankshaft 9. One end of the crankshaft 9 is extended to the outer side of the side cover 2 through the crankshaft reserved boss 22, and the crankshaft 9 is used as the output shaft. The spare groove 21 is also used to install other output shafts to meet customer needs. At the same time, the installation reserved holes 24 can fix the sealing plate on the crankshaft reserved boss 22 or the camshaft hole 23 by connecting fasteners to achieve the sealing of the side cover 2. While ensuring the sealing of the side cover 2, different types of shafts can be used as output shafts, which improves the applicability of the side cover 2 to different engines and reduces the production cost of the side cover 2.

[0038] like Figure 3 and 4 As shown, oil measuring ports 26 are formed on both end surfaces of the side cover 2 facing outward, and the oil measuring ports 26 are used to connect an oil dipstick. The oil level is determined by the oil dipstick. An oil outlet hole 27 is opened on the lower end of the side cover 2. The oil in the body 1 is discharged through the oil outlet hole 27 to replace the oil.

[0039] like Figure 5 As shown, the machine body 1 includes a machine body base 11 and a machine body main body 12. A cylinder head connecting seat 14 is also connected to the machine body main body 12 for connecting with the cylinder head 3. The machine body main body 12 is formed on the machine body base 11. A cooling hole 13 is opened at the lower end of the side of the machine body main body 12. The cooling hole 13 extends downward to the lower end of the machine body base 11. The cooling hole 13 is located in the air guide cover 6. An airflow is generated by a cooling fan. By utilizing the flow of the airflow, part of the airflow passes through the cooling hole 13 and enters the lower end of the machine base 11, so as to dissipate heat from the bottom of the machine base 11 and cool the oil inside the machine body 1, thereby further improving the cooling efficiency of the machine body 1.

[0040] like Figure 6As shown, a transversely distributed reinforcing rib 111 is formed on the lower end of the body base 11, and the reinforcing rib 111 enhances the rigidity and strength of the body base 11. The lower end of the cooling hole 13 is connected to the space between the reinforcing rib 111, and heat dissipation ribs 112 are connected between the reinforcing ribs 111. The heat dissipation ribs 112 are vertically distributed, and the height of the heat dissipation rib 112 is less than the height of the reinforcing rib 111, so that the airflow can move along the transverse reinforcing rib 111 and enter the heat dissipation rib 112 in sequence, thereby dissipating the heat on the lower end surface of the body base 11.

[0041] like Figure 7 and 8 As shown, the cylinder head 3 includes a cylinder head base 31, on which a side wall 32 in the form of a closed loop is formed, and an air inlet 33 and an air outlet 36 are provided on both side surfaces of the side wall 32, and two first rocker arm seats 34 and two second rocker arm seats 35 are formed on the bottom surface of the side wall 32, and the two second rocker arm seats 35 are located between the two first rocker arm seats 34, and the two first rocker arm seats 34 and the two second rocker arm seats 35 are symmetrically distributed and are all on the same straight line. By allowing the rocker arm shaft to pass through the two first rocker arm seats 34 and the two second rocker arm seats 35 at the same time, the installation strength of the rocker arm shaft is improved, and the installation strength of the rocker arm shaft is higher than that of the existing split mounting seat, and an oil inlet hole 341 is provided on the upper end surface of the first rocker arm seat 34, and by dripping lubricating oil into the oil inlet hole 341, the smoothness of the rocker arm rotation is improved and the wear of the rocker arm shaft during rotation is reduced.

[0042] like Fig. 9 , 10 The crankshaft 9 is connected to the crankshaft 9 for rotation in the machine body 1, and a connecting rod 91 is connected to the crankshaft 9. The other end of the connecting rod 91 is connected to the piston. The rotation of the crankshaft 9 drives the connecting rod 91 to rotate, and further drives the piston to move. The connecting rod 91 includes a connecting rod body 911. One end of the connecting rod body 911 is formed with a first connecting hole 9111, and the other end is connected with a tile cover 912 to form a second connecting hole 9112 with the tile cover 912. The tile cover 911 is formed with an oil throwing hole The oil-slinging spoon 9121 and the connecting rod body 911 form an obtuse angle of 125° to 145°. The oil-slinging spoon 9121 can stir the oil and splash the oil when the connecting rod 91 rotates forward or reversely.

[0043] like Fig.11As shown, the oil flinging spoon 9121 includes a spoon handle 9122 and a spoon tip 9123, the spoon handle 9122 is thicker than the spoon tip 9123, the spoon handle 9122 and the spoon tip 9123 are arranged at an obtuse angle, and the width of the oil flinging spoon 9121 gradually decreases from the spoon handle 9122 to the spoon tip 9123, thereby increasing the contact area between the spoon tip 9123 and the lubricating oil. The obtuse angle distribution of the spoon tip 9123 and the spoon handle 9122 enables the connecting rod 91 to enhance the stirring amplitude of the lubricating oil whether it rotates forward or reverse, thereby causing the lubricating oil to splash, lubricate the components in the engine, and improve the lubrication effect.

[0044] like Fig.10 As shown, the tile cover 912 is also provided with an oil-swinging hole 9113, through which the oil-swinging hole 9113 is used to increase the flying area of ​​the oil and improve the lubrication effect.

[0045] like Fig.12 and 13 As shown, the air filter 5 includes a filter housing 53, the upper end of the filter housing 53 is connected to an air intake pipe 52, and an air guide pipe 51 is sleeved on the air intake pipe 52, and the air intake volume is increased by the air guide pipe 51, and the lower end of the filter housing 53 is connected to an oil reservoir 54, and the oil reservoir 54 is used to adsorb impurities in the air, and a ventilation pipe 532 is formed in the filter housing 53, and the air intake pipe 52 is connected to the ventilation pipe 532, and the ventilation pipe 532 is located above the oil reservoir 54, and air is guided to the surface of the oil reservoir 54 through the ventilation pipe 532, and preliminary impurities are adsorbed on the air, and a filter element assembly 55 is fixed on the surface of the ventilation pipe 532, and the air rises and is purified by the filter element assembly 55, and an exhaust port 531 is opened on the surface of the filter housing 53, and the exhaust port 531 is located above the filter element assembly 55, and the purified air enters the engine through the exhaust port 531.

[0046] The filter housing 53 is stepped, and includes a first ring portion 533 and a second ring portion 534 distributed up and down. The diameter of the first ring portion 533 is smaller than that of the second ring portion 534. The exhaust port 531 is opened on the side of the first ring portion 533. The filter element assembly 55 is installed at the lower end of the first ring portion 533 and abuts against the upper end surface of the second ring portion 534. By increasing the diameter of the second ring portion 534, the area of ​​the filter element assembly 55 is expanded, the filtering efficiency of the air is improved, the initial resistance of the air filter is reduced, and the exhaust volume is further increased to meet the normal operation of the engine.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An engine suitable for agricultural machinery use, comprising a body, the upper end of the body is connected to a cylinder head, the two sides of the body are respectively connected to a side cover and a cooling fan, the cooling fan is covered with an air guide cover, the upper end of the body is connected to an oil tank and a cooling water tank, and the side of the cylinder head is also connected to an air filter, characterized in that: The side cover is provided with a camshaft hole, a crankshaft reserved boss and a spare groove, a camshaft is installed in the camshaft hole, one end of the camshaft is installed in the body, and the other end of the camshaft extends to the outside of the side cover, and the crankshaft reserved boss and the outside of the camshaft hole are both provided with installation reserved holes distributed in a rectangular shape, and the installation reserved holes are used to fix the sealing plate.

2. An engine suitable for agricultural machinery use according to claim 1, characterized in that: The two ends of the side cover are formed with oil measuring ports facing outward, and the lower end of the side cover is provided with an oil outlet hole.

3. The engine suitable for agricultural machinery use according to claim 1, characterized in that: The machine body comprises a machine body base and a machine body main body, wherein the machine body main body is formed on the machine body base, and a cooling hole is opened at the lower end of the side surface of the machine body main body, and the cooling hole extends downward to the lower end of the machine body base.

4. The engine suitable for agricultural machinery use according to claim 3, characterized in that: The lower end of the body base is formed with transversely distributed reinforcing ribs, the lower end of the cooling hole is connected to the space between the reinforcing ribs, the reinforcing ribs are connected with heat dissipation ribs, the heat dissipation ribs are vertically distributed, and the height of the heat dissipation ribs is less than the height of the reinforcing ribs.

5. The engine suitable for agricultural machinery use according to claim 1, characterized in that: The cylinder head includes a cylinder head base, a closed-loop side wall is formed on the cylinder head base, two first rocker arm seats and two second rocker arm seats are formed on the bottom surface of the side wall, the two second rocker arm seats are located between the two first rocker arm seats, the two first rocker arm seats and the two second rocker arm seats are symmetrically distributed and are on the same straight line, and an oil inlet hole is opened on the upper end surface of the first rocker arm seat.

6. The engine suitable for agricultural machinery use according to claim 1, characterized in that: A crankshaft is rotatably connected in the body, a connecting rod is connected to the crankshaft, the other end of the connecting rod is connected to the piston, the connecting rod includes a connecting rod body, one end of the connecting rod body is formed with a first connecting hole, the other end is connected with a tile cover, and a second connecting hole is formed with the tile cover, an oil flinger spoon is formed on the tile cover, and the oil flinger spoon forms an obtuse angle of 125° to 145° with the connecting rod body.

7. An engine suitable for agricultural machinery use according to claim 6, characterized in that: The oil throwing spoon comprises a spoon handle and a spoon tip, the spoon handle is thicker than the spoon tip, and the spoon handle and the spoon tip are distributed at an obtuse angle.

8. The engine suitable for agricultural machinery use according to claim 6, characterized in that: The tile cover is also provided with an oil throwing hole.

9. The engine suitable for agricultural machinery use according to claim 1, characterized in that: The air filter includes a filter housing, the upper end of the filter housing is connected to an air intake pipe, an air guide pipe is sleeved on the air intake pipe, the lower end of the filter housing is connected to an oil reservoir, a ventilation pipe is formed in the filter housing, the ventilation pipe is connected to the air intake pipe, the ventilation pipe is located above the oil reservoir, a filter element assembly is fixed on the surface of the ventilation pipe, and an exhaust port is opened on the surface of the filter housing, and the exhaust port is located above the filter element assembly.

10. An engine suitable for agricultural machinery use according to claim 9, characterized in that: The filter housing is stepped, including a first ring portion and a second ring portion distributed up and down, the diameter of the first ring portion is smaller than that of the second ring portion, the exhaust port is opened on the side of the first ring portion, and the filter element assembly is installed at the lower end of the first ring portion and abuts against the upper end surface of the second ring portion.

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