Novel chain wheel

Abstract

The invention discloses a novel chain wheel which comprises a chain wheel body and a cam shaft. The chain wheel body is divided into an upper chain wheel part and a lower chain wheel part along the axis. The weight of the upper chain wheel part is larger than that of the lower chain wheel part. The chain wheel body is provided with screw holes and an annular hole. A weight stack is arranged on the outer surface of the chain wheel body and divided into an upper weight stack part and a lower weight stack part along the axis. The weight of the upper weight stack part is larger than that of the lower weight stack part. Penetrating holes are formed in the portions, corresponding to the screw holes, on the weight stack. A shaft hole is formed in the portion, corresponding to the annular hole, on the weight stack. The screw holes and the penetrating holes are connected through first screws. A screw hole is formed in the center of the end face of the cam shaft and a second screw penetrates the shaft hole and the annular hole to enter the screw hole. By the adoption of the novel chain wheel, when the chain wheel drives the cam shaft to rotate, the cam shaft and the chain wheel are both in the balanced state, the smooth rotation, labor-saving and smooth effects are achieved, and therefore engine efficiency is improved.

Description

technical field [0001] The invention relates to a camshaft. Background technique [0002] The operation of a general locomotive engine is mainly through the combustion of fuel in the combustion chamber, thereby driving the piston to reciprocate, and through the rotation of the sprocket to form a linkage with the camshaft, and the rotation of the sprocket will rotate with the crank rotation generated by the reciprocating motion of the piston. The piston and the valve operate synchronously in sequence through the linkage of the cycle, so that the opening and closing of the intake and exhaust valves can cooperate with the piston. The sprocket is usually fixed by two convex parts of the camshaft. The two convex parts intersect to form an angle greater than 180° and an angle smaller than 180°. Since the two included angles are not 180°, the camshaft rotates It is always in a torque unbalanced state, and the sprocket is linked with the camshaft, so the sprocket is also in a torqu...

AI Technical Summary

Problems solved by technology

The sprocket is usually fixed by two convex parts of the camshaft. The two convex parts intersect to form an angle greater than 180° and an angle smaller than 180°. Since the two included angles are not 180°, the camshaft rotates The moment is always in a state of torque imbalance, and the sprocket and the camshaft are linked, so the sprocket is also in a state of torque imbalance. Such a long-term deviation will make the rotation labor-intensive and not smooth, which will affect the efficiency of the engine.

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