Motor tricycle engine crankshaft roller pin lubricating structure

Abstract

The invention discloses a motor tricycle engine crankshaft roller pin lubricating structure. The motor tricycle engine crankshaft roller pin lubricating structure comprises a left crank, a right crank and a connecting rod. A crank pin is connected between the left crank and the right crank. The end portion of the connecting rod is sleeved with the crank pin. A crankshaft roller pin is arranged between the end portion of the connecting rod and the crank pin. The right crank is provided with a crank lubricating oil way. The crank pin is provided with a crank pin lubricating oil way communicating with the crank lubricating oil way through an oil supply hole. The opening end of the crank pin lubricating oil way is sealed through a first oil way plug. An oil way hole for supplying lubricating oil to the crankshaft roller pin is formed in the crank pin lubricating oil way. A second oil way plug is arranged in the part, between the oil supply hole and the oil way hole, of the crank pin lubricating oil way and provided with a lubricating oil passing hole. According to the motor tricycle engine crankshaft roller pin lubricating structure, lubricating oil about to enter the crankshaft roller pin can be filtered again, particle impurities in the lubricating oil are prevented from flowing into the crankshaft roller pin, the lubricating environment of the crankshaft roller pin is greatly improved, and the fault rate of a motor tricycle engine is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of motorcycle engines, and relates to a three-wheeled motorcycle engine crankshaft needle lubrication structure. Background technique [0002] Three-wheeled motorcycles have the advantages of being light and flexible, low in price, and suitable for carrying loads. The engine failure rate of three-wheeled motorcycles is also high due to reasons such as heavy vehicle load, poor road conditions, heavy wind and sand, and harsh working conditions. Therefore, how to reduce the engine failure rate of three-wheeled motorcycles has become an urgent problem for major engine manufacturers. One of the key technical issues. [0003] Among all the faults, the crankshaft of the engine bears the brunt, and the crankshaft needle roller bearing stuck or worn due to lubrication is one of the important reasons for the crankshaft of the engine. Due to the limitation of the existing structure, the engine lubricating oil flows fr...

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Problems solved by technology

[0003] Among all the faults, the crankshaft of the engine bears the brunt, and the crankshaft needle roller bearing stuck or worn due to lubrication is one of the important reasons for the crankshaft of the engine. Due to the limitation of the existing structure, the engine lubricating oil flows from the oil passage hole in the center of the right crank After entering the crank pin, the oil passage hole of the crank pin directly enters the needle roller to lubricate the needle roller. Once there are fine particles in the lubricating oil, it will directly cause problems such as needle roller sticking, which will affect the normal operation of the engine.

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