Crankshaft supporting structure of vertical output engine

Abstract

The invention relates to a crankshaft support structure of a vertical output engine, specifically a crankshaft support structure capable of bearing relatively large axial force when the engine adopts a vertical output mode, and belongs to the technical field of engine equipment. It includes the body, side cover, flywheel, crankshaft, balance shaft and camshaft. One end of the body is connected to the side cover. The crankshaft, balance shaft and camshaft are arranged inside the body and side cover. The flywheel end of the crankshaft is connected to the body through angular contact bearing support. Inside, the side cover end of the crankshaft is connected in the side cover through the plane thrust bearing and the main bearing bush, and the flywheel end of the crankshaft extends out of the body and connects to the flywheel. In the present invention, the angular contact ball bearing is used to replace the original ordinary ball bearing at the flywheel end of the crankshaft part, and a plane thrust bearing is added to the main bush of the side cover section, which greatly improves the reliability of the crankshaft support structure of the vertically output engine; the internal structure of the machine body is changed little , convenient processing, easy assembly, and low cost.

Description

technical field [0001] The invention relates to a crankshaft support structure of a vertical output engine, specifically a crankshaft support structure capable of bearing relatively large axial force when the engine adopts a vertical output mode, and belongs to the technical field of engine equipment. Background technique [0002] In recent years, on agricultural machinery such as small micro tillage machines and small marine propellers, the number of engines using vertical output has gradually increased. The transmission structure between machines is simplified, which is beneficial to reduce the weight and cost of the whole machine, and is convenient for users to maintain and use. However, since the crankshaft of the engine is in a vertical state, the weight of the flywheel and the crankshaft will add an extra downward axial force to the support bearings at both ends of the crankshaft. The phenomenon of cracking of the body or side cover and damage of the rolling bearing w...

AI Technical Summary

Problems solved by technology

However, since the crankshaft of the engine is in a vertical state, the weight of the flywheel and the crankshaft will add an extra downward axial force to the support bearings at both ends of the crankshaft. The phenomenon of cracking of the body or side cover and damage of rolling bearings will seriously affect the reliability of the vertical output engine in use

Images