Lightweight all-iron cam shaft

Abstract

The utility model relates to the technical field of camshafts, and discloses a lightweight all-iron camshaft which comprises a bearing shaft, the right side of the bearing shaft is fixedly connected with a first main body shaft, the right side of the first main body shaft is provided with a second main body shaft, and the left side of the second main body shaft is fixedly connected with an inserting convex block. A connecting column is fixedly connected to the right side of the first main body shaft, the inner side of the connecting column is slidably connected to the outer wall of the inserting convex block, a fixing round strip is slidably connected to the outer wall of the connecting column, a plurality of first screw holes are formed in the outer wall of the connecting column, and a plurality of second screw holes are formed in the outer wall of the fixing round strip. According to the utility model, the light weight is realized by forming the hole, the main body shaft becomes detachable and installable by virtue of the inserting convex block, the connecting column and the fixed round bar, and lubricating oil is added into the device, so that the lubricating oil is slowly spilled during operation of the device, and the lubricating and protecting effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of camshafts, in particular to a lightweight all-iron camshaft. Background Art

[0002] The camshaft is a key component in an internal combustion engine or other mechanical devices, used to control the opening and closing timing of the valves. Through the shape and arrangement of the cams, it pushes the valves to open and close according to a specific timing, thereby controlling the intake and exhaust of gas and regulating the gas flow in the combustion chamber.

[0003] The main shaft is the main part of the camshaft. It is a long strip-shaped shaft made of high-strength alloy steel material. There are usually multiple cam bosses on the main shaft, and each boss corresponds to the opening and closing action of a valve.

[0004] The camshaft is mainly made of steel and welded to connect various parts. However, the welded parts need to be cut or heat-treated to be separated, and for different mechanical devices, camshaft bosses of different lengths or shapes and sizes are required, which makes disassembly and replacement difficult. Therefore, a lightweight all-iron camshaft is proposed to solve the above problems. Content of the Utility Model

[0005] To make up for the above deficiencies, the utility model provides a lightweight all-iron camshaft, aiming to improve the problem that in the prior art, camshaft bosses of different shapes and sizes are required for different mechanical devices, which makes the disassembly and replacement of the parts connected by welding in the traditional design difficult.

[0006] To achieve the above object, the utility model adopts the following technical scheme: A lightweight all-iron camshaft, including a bearing shaft, a first main shaft is fixedly connected to the right side of the bearing shaft, a second main shaft is arranged on the right side of the first main shaft, a plug-in convex block is fixedly connected to the left side of the second main shaft, a connecting column is fixedly connected to the right side of the first main shaft, the inner side of the connecting column is slidably connected to the outer wall of the plug-in convex block, a fixed circular bar is slidably connected to the outer wall of the connecting column, a plurality of first screw holes are opened on the outer wall of the connecting column, a plurality of second screw holes are opened on the outer wall of the fixed circular bar, a plurality of third screw holes are opened on the outer wall of the plug-in convex block, the first screw holes, the second screw holes and the third screw holes are all connected by bolts, a first hole is opened inside the first main shaft, a second hole is opened inside the second main shaft, intake convex bosses are fixedly connected to the outer walls of the first main shaft and the second main shaft, exhaust convex bosses are fixedly connected to the outer walls of the first main shaft and the second main shaft, the exhaust convex bosses are arranged on the left side of the intake convex bosses, and a lubrication mechanism is arranged inside the intake convex bosses and the exhaust convex bosses, and the lubrication mechanism is used for containing lubricating oil.

[0007] As a further description of the above technical solution:

[0008] The lubrication mechanism includes an oil inlet groove 1. The left and right sides of the oil inlet groove 1 are respectively arranged on the left and right sides of the top of the air intake boss. An oil storage groove 1 is arranged inside the air intake boss. An oil inlet groove 2 is arranged on the front side of the exhaust boss. An oil storage groove 2 is arranged inside the exhaust boss.

[0009] As a further description of the above technical solution:

[0010] Jagged teeth are fixedly connected to the outer wall of the bearing shaft.

[0011] As a further description of the above technical solution:

[0012] A bearing groove is arranged on the right side of the bearing shaft. An installation part is fixedly connected inside the bearing groove. The right side of the installation part is fixedly connected to the left side of the first main shaft.

[0013] As a further description of the above technical solution:

[0014] A plurality of gaskets are fixedly connected to the outer wall of the fixed round bar. The inner sides of the gaskets are arranged on the top of the second screw hole.

[0015] As a further description of the above technical solution:

[0016] A sealing ring is fixedly connected to the left side of the outer wall of the plug-in convex block.

[0017] As a further description of the above technical solution:

[0018] The diameter of the bolt is adapted to the inner diameter of the first screw hole.

[0019] As a further description of the above technical solution:

[0020] The diameter of the plug-in convex block is adapted to the inner diameter of the connecting column.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by opening a hole in the middle part of the main shaft, the overall weight of the camshaft is reduced to achieve lightweight, and at the same time, sufficient shaft strength and stiffness are ensured to meet the requirements of the high-speed operation of the engine. Through the connection of the plug-in convex block, the connecting column and the fixed round bar, the main shaft becomes detachable and installable, and the number of main shafts is increased or decreased to adapt to the operation of mechanical devices of different sizes.

[0023] 2. In the present utility model, the oil inlet groove 1 and the oil inlet groove 2 are provided to connect the oil storage groove 1 and the oil storage groove 2, so that a certain amount of lubricating oil can be stored in the air inlet boss and the air outlet boss, ensuring that the lubricating oil can slowly spill out during the operation of the device, providing effective lubrication and protection, and thus extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of a lightweight all-iron camshaft proposed by the present utility model;

[0025] Figure 2 is a structural schematic diagram of the main shaft of a lightweight all-iron camshaft proposed by the present utility model;

[0026] Figure 3 is a structural schematic diagram of the splicing part of a lightweight all-iron camshaft proposed by the present utility model;

[0027] Figure 4 is a structural schematic diagram of the lubrication mechanism of a lightweight all-iron camshaft proposed by the present utility model.

[0028] Legend:

[0029] 1. Bearing shaft; 2. First main shaft; 3. Second main shaft; 4. Insertion convex block; 5. Connecting column; 6. Fixed round bar; 7. First screw hole; 8. Second screw hole; 9. Third screw hole; 10. Bolt; 11. Air inlet boss; 12. Air outlet boss; 13. Lubrication mechanism; 1301. Oil inlet groove 1; 1302. Oil storage groove 1; 1303. Oil inlet groove 2; 1304. Oil storage groove 2; 14. Saw teeth; 15. Bearing groove; 16. Mounting part; 17. Gasket; 18. Sealing ring; 19. First hole; 20. Second hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figure 1 、 Figure 2 and Figure 3, An embodiment provided by the present utility model: A lightweight all-iron camshaft, including a bearing shaft 1, a first main shaft 2 is fixedly connected to the right side of the bearing shaft 1, a second main shaft 3 is arranged on the right side of the first main shaft 2, a plugging convex block 4 is fixedly connected to the left side of the second main shaft 3, a connecting column 5 is fixedly connected to the right side of the first main shaft 2, the inner side of the connecting column 5 is slidably connected to the outer wall of the plugging convex block 4, a fixed circular bar 6 is slidably connected to the outer wall of the connecting column 5, a plurality of first screw holes 7 are respectively opened on the outer wall of the connecting column 5, a plurality of second screw holes 8 are respectively opened on the outer wall of the fixed circular bar 6, a plurality of third screw holes 9 are respectively opened on the outer wall of the plugging convex block 4, the first screw holes 7, the second screw holes 8 and the third screw holes 9 are all connected by bolts 10, a first hole 19 is opened inside the first main shaft 2, a second hole 20 is opened inside the second main shaft 3, intake convex packages 11 are fixedly connected to the outer walls of the first main shaft 2 and the second main shaft 3, exhaust convex packages 12 are fixedly connected to the outer walls of the first main shaft 2 and the second main shaft 3, the exhaust convex packages 12 are arranged on the left side of the intake convex packages 11, lubricating mechanisms 13 are arranged inside the intake convex packages 11 and the exhaust convex packages 12, and the lubricating mechanisms 13 are used for containing lubricating oil; sawteeth 14 are fixedly connected to the outer wall of the bearing shaft 1; the diameter of the plugging convex block 4 is adapted to the inner diameter of the connecting column 5.

[0032] Specifically, the sawteeth 14 drive the bearing shaft 1 to rotate through the transmission device on the meshing mechanical device, and the bearing shaft 1 connects the first main shaft 2 and the second main shaft 3 to drive the intake convex packages 11 and the exhaust convex packages 12 to rotate, so as to adjust the opening and closing of the valve and improve the performance of the engine. A first hole 19 and a second hole 20 are respectively opened in the middle parts inside the first main shaft 2 and the second main shaft 3 to reduce the overall weight of the camshaft, and at the same time ensure the strength and stiffness of the shaft, realizing the balance between performance and light weight. When it is necessary to connect the first main shaft 2 and the second main shaft 3, first put the fixed circular bar 6 on the outer wall of the connecting column 5, and then slide the plugging convex block 4 arranged on the left side of the second main shaft 3 into the connecting column 5 connected to the right side of the first main shaft 2 to complete the clamping. Align the first screw holes 7, the second screw holes 8 and the third screw holes 9, and use bolts 10 for fixation. Its structure is compact and the installation is simple, meeting the needs of different sizes of mechanical devices to operate.

[0033] Refer to Figure 1 and Figure 2 , An embodiment provided by the present utility model: The lubricating mechanism 13 includes a first oil inlet groove 1301, the left and right sides of the first oil inlet groove 1301 are respectively opened on the left and right sides of the top of the intake convex package 11, a first oil storage groove 1302 is opened inside the intake convex package 11, a second oil inlet groove 1303 is opened on the front side of the exhaust convex package 12, and a second oil storage groove 1304 is opened inside the exhaust convex package 12.

[0034] Specifically, use small syringes to respectively align with the first oil inlet groove 1301 and the second oil inlet groove 1303 and pour a certain amount of lubricating oil. The lubricating oil drips into the first oil storage groove 1302 and the second oil storage groove 1304 along the first oil inlet groove 1301 and the second oil inlet groove 1303. When the device rotates, the air intake convex hull 11 and the exhaust convex hull 12 rotate, driving the pre-filled lubricating oil in the first oil storage groove 1302 and the second oil storage groove 1304 to slowly splash out from the first oil inlet groove 1301 and the second oil inlet groove 1303. In this way, the lubricating oil in the oil storage groove will be evenly distributed to all parts of the equipment, playing a role in lubrication and protection.

[0035] Refer to Figure 1 and Figure 2 For an embodiment provided by the present utility model: A bearing groove 15 is provided on the right side of the bearing shaft 1. An installation part 16 is fixedly connected inside the bearing groove 15. The right side of the installation part 16 is fixedly connected to the left side of the first main shaft 2; A plurality of gaskets 17 are fixedly connected to the outer wall of the fixed round bar 6. The inner side of the gasket 17 is arranged on the top of the second screw hole 8; A sealing ring 18 is fixedly connected to the left side of the outer wall of the plug-in convex block 4; The diameter of the bolt 10 is adapted to the inner diameter of the first screw hole 7.

[0036] Specifically, the connection between the first main shaft 2 and the bearing shaft 1 is facilitated through the installation part 16 and the bearing groove 15. The gasket 17 is used to reinforce the fixation of the bolt 10, and the sealing ring 18 makes the connection between the first main shaft 2 and the second main shaft 3 more firm.

[0037] Working principle: The saw teeth 14 drive the bearing shaft 1 to rotate through the transmission device on the mechanical device. The bearing shaft 1 is connected to the first main shaft 2 and the second main shaft 3 to drive the air intake convex hull 11 and the exhaust convex hull 12 to rotate, so as to adjust the opening and closing of the valve. When it is necessary to connect the first main shaft 2 and the second main shaft 3, first put the fixed round bar 6 on the outer wall of the connecting column 5, and then slide the plug-in convex block 4 provided on the left side of the second main shaft 3 into the connecting column 5 connected to the right side of the first main shaft 2 to complete the clamping. Align the first screw hole 7, the second screw hole 8 and the third screw hole 9, and use the bolt 10 for fixation.

[0038] Use small syringes to respectively align with the first oil inlet groove 1301 and the second oil inlet groove 1303 and pour a certain amount of lubricating oil. The lubricating oil drips into the first oil storage groove 1302 and the second oil storage groove 1304 along the first oil inlet groove 1301 and the second oil inlet groove 1303. When the device rotates, the air intake convex hull 11 and the exhaust convex hull 12 rotate, driving the pre-filled lubricating oil in the first oil storage groove 1302 and the second oil storage groove 1304 to slowly splash out from the first oil inlet groove 1301 and the second oil inlet groove 1303.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A lightweight all-iron camshaft, comprising a bearing shaft (1), characterized in that: The right side of the bearing shaft (1) is fixedly connected to the first main shaft (2), the right side of the first main shaft (2) is provided with a second main shaft (3), the left side of the second main shaft (3) is fixedly connected to the plug-in protrusion (4), the right side of the first main shaft (2) is fixedly connected to the connecting column (5), the inner side of the connecting column (5) is slidably connected to the outer wall of the plug-in protrusion (4), the outer wall of the connecting column (5) is slidably connected to the fixing round bar (6), the outer wall of the connecting column (5) is provided with a plurality of screw holes (7), the outer wall of the fixing round bar (6) is provided with a plurality of screw holes (8), the outer wall of the plug-in protrusion (4) is provided with a plurality of screw holes (9), the screw holes (1) are provided with a plurality of screw holes (10), and the screw holes (11) are provided with a plurality of screw holes (12). The first main body shaft (7), the second screw hole (8) and the third screw hole (9) are connected by bolts (10); the first main body shaft (2) is provided with a hole one (19); the second main body shaft (3) is provided with a hole two (20); the outer walls of the first main body shaft (2) and the second main body shaft (3) are fixedly connected with an air intake bulge (11); the outer walls of the first main body shaft (2) and the second main body shaft (3) are fixedly connected with an air exhaust bulge (12); the air exhaust bulge (12) is arranged on the left side of the air intake bulge (11); the air intake bulge (11) and the air exhaust bulge (12) are provided with a lubrication mechanism (13); the lubrication mechanism (13) is used to contain lubricating oil.

2. A lightweight all-iron camshaft according to claim 1, characterized in that: The lubrication mechanism (13) comprises an oil inlet groove (1301), the left and right sides of the oil inlet groove (1301) are both opened on the left and right sides of the top of the air inlet bulge (11), an oil storage groove (1302) is opened inside the air inlet bulge (11), an oil inlet groove (1303) is opened on the front side of the exhaust bulge (12), and an oil storage groove (1304) is opened inside the exhaust bulge (12).

3. A lightweight all-iron camshaft according to claim 1, characterized in that: The outer wall of the bearing shaft (1) is fixedly connected with saw teeth (14).

4. A lightweight all-iron camshaft according to claim 1, characterized in that: A bearing groove (15) is provided on the right side of the bearing shaft (1), a mounting member (16) is fixedly connected inside the bearing groove (15), and the right side of the mounting member (16) is fixedly connected to the left side of the first main body shaft (2).

5. The lightweight all-iron camshaft according to claim 1, characterized in that: The outer wall of the fixed round bar (6) is fixedly connected with a plurality of gaskets (17), and the inner side of the gasket (17) is arranged on the top of the second screw hole (8).

6. The lightweight all-iron camshaft according to claim 1, characterized in that: A sealing ring (18) is fixedly connected to the left side of the outer wall of the plug-in protrusion (4).

7. The lightweight all-iron camshaft according to claim 1, characterized in that: The diameter of the bolt (10) is matched to the inner diameter of the screw hole (7).

8. The lightweight all-iron camshaft according to claim 1, characterized in that: The diameter of the plug-in protrusion (4) is matched to the inner diameter of the connecting column (5).

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