CN208138435U - A kind of fixed drive sprocket - Google Patents

Abstract

The utility model discloses a fixed drive sprocket, which comprises two symmetrically arranged wheel bodies, gear teeth are formed on the periphery of the wheel bodies, and inner holes are formed in the middle of the wheel bodies. The inner wall is formed with connecting teeth around the inner wall of the inner hole. The connecting teeth on the two wheel bodies correspond to each other. Several key connecting holes are evenly arranged on the wheel body. The key connecting holes on the two wheel bodies Corresponding to each other, and the two wheel bodies are connected by inserting the key shaft into the key connection hole; the utility model changes the transmission connection mode of the traditional sprocket and the shaft, effectively increases the connection contact surface between the inner hole of the sprocket and the shaft, and makes the shaft rotate The force is evenly transmitted to the sprocket, which effectively improves the transmission efficiency, prolongs the service life of the sprocket, and ensures the stability of the sprocket during work.

Description

A fixed drive sprocket

technical field

The utility model relates to a fixed driving sprocket and belongs to the technical field of mechanical transmission sprockets.

Background technique

A sprocket is a wheel with a cog-type sprocket, which is used to mesh with a pitch-accurate block on a chain link or a cable. The sprocket is one of the key components in a mechanical transmission assembly. The traditional sprocket relies on The inner hole is connected with the shaft key. Long-term use will cause the inner hole to wear and affect the work efficiency. Moreover, when the shaft transmits power to the sprocket through the key connection, all the force of the shaft rotation is concentrated on the key, resulting in a large bearing capacity of the key. , the interaction force between the shaft and the sprocket is uneven.

Contents of the invention

In order to solve the deficiencies of the prior art, the utility model provides a fixed driving sprocket, which changes the transmission connection mode of the traditional sprocket and the shaft, effectively increases the connection contact surface between the inner hole of the sprocket and the shaft, and makes the shaft rotate. The force is evenly transmitted to the sprocket, which effectively improves the transmission efficiency, prolongs the service life of the sprocket, and ensures the stability of the sprocket during work.

The technical scheme adopted in the utility model is:

A fixed driving sprocket, comprising two symmetrically arranged wheel bodies, gear teeth are formed on the periphery of the wheel bodies, an inner hole is formed in the middle of the wheel body, and a hole is formed on the inner wall of the inner hole. The connecting teeth around the inner wall of the inner hole correspond to each other on the two wheel bodies. Several key connection holes are evenly arranged on the wheel body. The key connection holes on the two wheel bodies correspond to each other. The two wheel bodies are connected by inserting the key shaft into the key connection hole.

As a further preference of the present invention, there are six key connection holes on the wheel body to improve the connection stability of the two wheel bodies.

As a further preference of the present invention, the width of the gear teeth is half of the thickness of the wheel body.

As a further preference of the present invention, the width of the connecting teeth is half of the thickness of the wheel body.

As a further preference of the present invention, the gear teeth and the connecting teeth are not on the same plane.

As a further preference of the present invention, the key shaft is connected with the key connection hole by interference fit, so that the two wheel bodies are tightly connected together.

The beneficial effect of the utility model is that the sprocket adopts two wheel body structures connected together, and the corresponding connecting teeth in the inner holes of the two wheels are used for meshing transmission connection with the gear on the shaft, which changes the traditional sprocket and shaft. The transmission connection method effectively increases the connection contact surface between the inner hole of the sprocket and the shaft, so that the force of the shaft rotation is evenly transmitted to the sprocket, effectively improving the transmission efficiency, extending the service life of the sprocket, and ensuring the stability of the sprocket during work. sex.

Description of drawings

Fig. 1 is the front structural representation of the utility model;

Fig. 2 is the side structure schematic diagram of the utility model;

Fig. 3 is a schematic diagram of a sectional structure along the direction A in Fig. 2;

The main reference signs in the figure have the following meanings:

1-wheel body, 2-gear teeth, 3-inner hole, 4-connecting teeth, 5-key connecting hole.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is done concrete introduction.

As shown in Figures 1-3: this embodiment is a fixed drive sprocket, including two symmetrically arranged wheel bodies 1, gear teeth 2 are formed on the periphery of the wheel body 1, and gear teeth 2 are formed in the middle of the wheel body 1. In the inner hole 3, connecting teeth 4 surrounding the inner wall of the inner hole 3 are formed on the inner wall of the inner hole 3. The connecting teeth 4 on the two wheel bodies 1 correspond to each other, and several keys are evenly arranged on the wheel body 1. The connection holes 5 and the key connection holes 5 on the two wheel bodies 1 correspond to each other, and the two wheel bodies 1 are connected by inserting the key shaft into the key connection holes 5 .

In this embodiment, there are six key connection holes 5 on the wheel body 1 to improve the connection stability of the two wheel bodies 1 .

In this embodiment, the width of the gear teeth 2 is half of the thickness of the wheel body 1 .

In this embodiment, the width of the connecting teeth 4 is half of the thickness of the wheel body 1 .

In this embodiment, the gear teeth 2 and the connecting teeth 4 are not on the same plane.

In this embodiment, the key shaft is connected with the key connection hole 5 through an interference fit, so that the two wheel bodies 1 are tightly connected together.

When installing, put the two wheel bodies 1 on the shaft from both ends of the shaft, and make the corresponding connecting teeth 4 in the inner holes 3 of the two wheel bodies 1 mesh with the gears on the shaft, and then connect the two wheels through the key shaft. The two wheel bodies 1 are connected together, and the gear on the shaft and the shaft are integral structures.

The sprocket wheel of the utility model adopts two wheel body structures connected together, and the connecting teeth corresponding to each other in the inner holes of the two wheels are used for meshing transmission connection with the gear on the shaft, changing the transmission connection mode of the traditional sprocket wheel and the shaft, and effectively Increase the connection contact surface between the inner hole of the sprocket and the shaft, so that the force of the shaft rotation is evenly transmitted to the sprocket, effectively improving the transmission efficiency, prolonging the service life of the sprocket, and ensuring the stability of the sprocket in operation.

The above is only the preferred implementation of the utility model patent, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model patent, some improvements and modifications can also be made, these Improvement and retouching should also be regarded as the protection scope of the utility model patent.

Claims (6)

1. A fixed driving sprocket, characterized in that: it comprises two wheel bodies arranged symmetrically, gear teeth are formed on the periphery of the wheel body, and an inner hole is formed in the middle part of the wheel body, and an inner hole is formed in the inner hole The inner side wall of the inner hole is formed with connecting teeth around the inner wall of the inner hole. The connecting teeth on the two wheel bodies correspond to each other. There are also several key connection holes evenly arranged on the wheel body. The key connection holes on the two wheel bodies The holes correspond to each other, and the two wheel bodies are connected by inserting the key shaft into the key connection hole. 2. A fixed drive sprocket according to claim 1, characterized in that there are six key connection holes on the wheel body. 3. A fixed drive sprocket according to claim 1, wherein the width of said gear teeth is half of the thickness of the wheel body. 4. A fixed drive sprocket according to claim 1, wherein the width of said connecting teeth is half of the thickness of the wheel body. 5. A fixed drive sprocket according to claim 1, characterized in that said gear teeth and connecting teeth are not on the same plane. 6 . The fixed drive sprocket according to claim 1 , wherein the key shaft is connected to the key connection hole with an interference fit. 7 .