Modular demountable camshaft

Abstract

The utility model discloses a modularization detachable camshaft belongs to camshaft technical field, and its technical key points include camshaft main part, the surface of camshaft main part even fixed connection has a plurality of limit board along the axis, the surface of every limit board all is provided with cam main part, and the utility model discloses through modularization design, and cam main part and camshaft main part detachable connection and split type mounting structure, screw cylinder, sealing washer, limit board realize the independent dismounting of cam main part, and allow the separate replacement damaged cam main part, avoid overall scrapping camshaft, reduce maintenance cost greatly, simplify maintenance process, need not special equipment just can field operation, reduce downtime, can according to the working condition demand flexible adjustment cam layout, improve equipment adaptability, through the injection hole design, cooperate high temperature anaerobic glue, realize secondary bonding fixed, double fixed mechanism, significantly improve system rigidity and stability.

Description

Technical Field

[0001] This utility model belongs to the field of camshaft technology, specifically relating to a modular detachable camshaft. Background Technology

[0002] Camshafts are important components for intake and exhaust control. Usually, there are two or one camshafts installed in the engine. The main methods for producing camshafts at home and abroad are: using steel forged blanks, machining them, and then high-frequency quenching the cam tip to form a martensitic layer, which is a one-piece machining process. Since the strength requirements of the cam are different from those of the camshaft, because they have different tasks such as friction and load bearing, the one-piece machining process is very complicated. However, the materials of the cam and the shaft are the same, and they must be selected according to the cam standard.

[0003] A search revealed a Chinese patent with publication number CN210483835U, which discloses a camshaft that is easy to replace and maintain. The camshaft includes a left camshaft, with one side of the left camshaft connected to a right camshaft. Both the left and right camshafts have connecting ends at their opposite ends. However, in the current market, once the camshafts wear out, the entire camshaft must be replaced, which is costly. Utility Model Content

[0004] The purpose of this invention is to provide a modular, detachable camshaft to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular detachable camshaft, comprising a camshaft body, wherein a plurality of limiting plates are uniformly fixedly connected to the surface of the camshaft body along the axis, and a cam body is provided on the surface of each limiting plate, wherein the cam body and the limiting plate are slidably connected.

[0006] Preferably, a plurality of threaded strips are uniformly fixedly connected to the surface of the camshaft body along the axis, and a plurality of screw cylinders are provided on the surface of the camshaft body, the screw cylinders being threadedly connected to the threaded strips.

[0007] Preferably, each of the limiting plates is located between the two threaded strips.

[0008] Preferably, a limiting groove is formed inside the screw barrel, and the limiting groove has the same shape as the limiting plate.

[0009] Preferably, a plurality of sealing gaskets are evenly arranged on the surface of the camshaft body along the axis, the sealing gaskets are evenly distributed on both sides of each cam body and fit against each other, and the screw barrel is rotatably connected to the sealing gaskets.

[0010] Preferably, the limiting plate has an injection hole on the side adjacent to the cam body.

[0011] Preferably, each of the injection holes corresponds to the other and is fitted together to form a cylindrical structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model adopts a modular design, with a detachable connection and split installation structure between the cam body and the camshaft body, screw barrel, sealing gasket, and limiting plate, to achieve independent disassembly and assembly of the cam body. It allows for the individual replacement of damaged cam bodies, avoiding the scrapping of the entire camshaft, greatly reducing maintenance costs, simplifying the maintenance process, and enabling on-site operation without special equipment, reducing downtime. The cam layout can be flexibly adjusted according to working conditions, improving the adaptability of the equipment.

[0014] 2. This utility model achieves secondary bonding and fixing through the design of the injection hole and the use of high-temperature anaerobic adhesive. The limiting plate ensures that the cam body is quickly and accurately aligned, eliminating angular deviations, which is superior to traditional keyway positioning. The high-temperature anaerobic adhesive fills the gaps and cures, enhancing the torsional resistance and preventing angular deviation under high-speed operation. The dual fixing mechanism significantly improves the rigidity and stability of the system.

[0015] 3. This utility model clamps the two sides of the cam body with double sealing gaskets and provides axial preload through screw barrel spinning. The sealing gaskets effectively suppress axial movement of the cam body and avoid displacement caused by vibration. The tight fit structure reduces the seepage of lubricating oil into the cam-shaft gap and reduces the risk of wear. The self-locking thread design of the screw barrel and threaded strip ensures that the preload does not decrease during long-term operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the horizontal cross-sectional structure of the cam body of this utility model;

[0018] Figure 3 This is a schematic diagram of the camshaft body and limiting plate structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the glue injection hole and limiting plate structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the screw barrel and limiting groove structure of this utility model.

[0021] In the diagram: 1. Camshaft body; 2. Cam body; 3. Limiting plate; 4. Threaded strip; 5. Screw barrel; 6. Sealing gasket; 7. Injection hole; 8. Limiting groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a modular detachable camshaft, including a camshaft body 1. Several limiting plates 3 are uniformly fixedly connected to the surface of the camshaft body 1 along its axis. A cam body 2 is mounted on the surface of each limiting plate 3, and the cam body 2 and the limiting plate 3 are slidably connected. Several threaded strips 4 are uniformly fixedly connected to the surface of the camshaft body 1 along its axis. Several screw cylinders 5 are mounted on the surface of the camshaft body 1, and the screw cylinders 5 are threadedly connected to the threaded strips 4. Each limiting plate 3 is located between two threaded strips 4. Several sealing gaskets 6 are uniformly arranged on the surface of the camshaft body 1 along its axis. The sealing gaskets 6 are evenly distributed on both sides of each cam body 2 and are in contact with each other. The screw cylinders 5 are rotatably connected to the sealing gaskets 6. A limiting groove 8 is formed inside the screw cylinder 5, and the limiting groove 8 has the same shape as the limiting plate 3. When it is necessary to install the cam body 2 onto the surface of the camshaft body 1, the screw cylinder 5 and the sealing gasket 6 are first placed on the surface of the camshaft body 1 and moved to a suitable position. When the screw cylinder 5 passes the limiting plate 3... When the screw barrel 5 passes through the limiting groove 8 and the limiting plate 3, the limiting plate 3 will not be affected. Due to the shape of the limiting groove 8, the internal thread of the screw barrel 5 is intermittent. When the screw barrel 5 passes the limiting plate 3, it will be threadedly connected with the threaded strip 4 until the sealing gasket 6 slides past the limiting plate 3. Then, the cam body 2 is fitted onto the surface of the camshaft body 1 and rotated until the cam body 2 rotates to a suitable approximate angle. Then, the cam body 2 slides on the surface of the camshaft body 1 until the cam body 2 is located on the surface of the limiting plate 3. When the cam body 2 is fitted onto the surface of the limiting plate 3, the limiting plate 3 will accurately position the cam body 2 at an angle. After the cam body 2 is positioned, the screw barrel 5 is rotated in the opposite direction so that the sealing gasket 6 and the cam body 2 fit together. Then, a sealing gasket 6 is also fitted on the other side of the cam body 2. The two sealing gaskets 6 limit the cam body 2 and prevent the cam body 2 from moving laterally during use, thus realizing the installation of the cam body 2.

[0024] In this embodiment, the limiting plate 3 and the side adjacent to the cam body 2 are provided with glue injection holes 7. Each glue injection hole 7 corresponds to each other and fits together to form a cylindrical structure. When the cam body 2 is located on the surface of the limiting plate 3, the two halves of the glue injection holes 7 are combined into a whole cylinder. High-temperature anaerobic adhesive is injected into the interior of each glue injection hole 7 through an external tool. The high-temperature anaerobic adhesive is used to bond and fix the cam body 2 and the limiting plate 3. The high-temperature anaerobic adhesive can also eliminate the gap between the cam body 2 and the limiting plate 3, making them tighter.

[0025] The use of this utility model involves the following steps:

[0026] S1: When it is necessary to install the cam body 2 onto the surface of the camshaft body 1, first put the screw barrel 5 and the sealing gasket 6 onto the surface of the camshaft body 1 and move them to the appropriate position. When the screw barrel 5 passes the limiting plate 3, the screw barrel 5 will pass through the limiting groove 8 and the limiting plate 3, so that the limiting plate 3 will not be affected. Due to the shape of the limiting groove 8, the internal thread of the screw barrel 5 is intermittent. When the screw barrel 5 passes the limiting plate 3, it will be threadedly connected with the threaded strip 4 until the sealing gasket 6 slides past the limiting plate 3. Then, put the cam body 2 onto the surface of the camshaft body 1 and rotate it until the cam body... 2. Rotate to a suitable approximate angle, and then slide the cam body 2 on the surface of the camshaft body 1 until the cam body 2 is located on the surface of the limiting plate 3. When the cam body 2 is fitted onto the surface of the limiting plate 3, the limiting plate 3 will accurately position the cam body 2 at an angle. After the cam body 2 is positioned, rotate the screw 5 in the opposite direction to make the sealing gasket 6 fit against the cam body 2. Then, also fit the sealing gasket 6 on the other side of the cam body 2. The two sealing gaskets 6 limit the cam body 2 and prevent the cam body 2 from moving laterally during use. This completes the installation of the cam body 2.

[0027] S2: When the cam body 2 is located on the surface of the limiting plate 3, after the two halves of the glue injection hole 7 are combined into a whole cylinder, high-temperature anaerobic glue is injected into the interior of each glue injection hole 7 through an external tool. The high-temperature anaerobic glue is used to bond and fix the cam body 2 and the limiting plate 3. The high-temperature anaerobic glue can also eliminate the gap between the cam body 2 and the limiting plate 3, making them tighter.

[0028] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0029] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular detachable camshaft, comprising a camshaft body (1), characterized in that: The surface of the camshaft body (1) is uniformly fixedly connected with several limiting plates (3) along the axis. Each limiting plate (3) is provided with a cam body (2) on its surface. The cam body (2) and the limiting plate (3) are slidably connected. The surface of the camshaft body (1) is uniformly fixedly connected with several threaded strips (4) along the axis, and the surface of the camshaft body (1) is provided with several screw cylinders (5), which are threadedly connected to the threaded strips (4).

2. The modular detachable camshaft according to claim 1, characterized in that: Each of the limiting plates (3) is located between the two threaded strips (4).

3. A modular detachable camshaft according to claim 1, characterized in that: The screw barrel (5) has a limiting groove (8) inside, and the limiting groove (8) has the same shape as the limiting plate (3).

4. A modular detachable camshaft according to claim 1, characterized in that: The surface of the camshaft body (1) is uniformly provided with a number of sealing gaskets (6) along the axis. The sealing gaskets (6) are evenly distributed on both sides of each cam body (2) and fit together with each other. The screw cylinder (5) is rotatably connected to the sealing gaskets (6).

5. A modular detachable camshaft according to claim 1, characterized in that: The limiting plate (3) and the side adjacent to the cam body (2) are both provided with glue injection holes (7).

6. A modular detachable camshaft according to claim 5, characterized in that: Each of the injection holes (7) corresponds to each other and fits together to form a cylindrical structure.

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