Novel combined automobile crank shaft

Abstract

The invention discloses a novel combined automobile crank shaft which comprises a first concentric shaft, a fixing pin, an oil injection hole, an eccentric shaft, a second concentric shaft, long fixing pin gaps, a conical bore, a circular disc, a short fixing pin gap, inserting holes and through holes. The novel combined automobile crank shaft is composed of the first concentric shaft, the eccentric shaft and the second concentric shaft. The eccentric shaft is connected between the first concentric shaft and the second concentric shaft. The eccentric shaft is fixed by being inserted into the inserting holes in the first concentric shaft and the second concentric shaft. A circular disc is formed between the connection position of the eccentric shaft and the first concentric shaft and the connection position of the eccentric shaft and the second concentric shaft. An oil injection hole is formed in the connection position. The circular disc is provided with the through holes. The first concentric shaft and the second concentric shaft are provided with the long fixing pin gaps. The two ends of the first concentric shaft and the second concentric shaft are further provided with the conical bores. The novel combined automobile crank shaft is simple in structure and convenient to manufacture, the concentric shafts and the eccentric shaft are connected and combined, and the novel combined automobile crank shaft is reliable in performance and very practical.

Description

technical field [0001] The invention relates to the technical field of automobile machinery equipment, in particular to a novel combined automobile crankshaft. Background technique [0002] The crankshaft is the main part of all internal combustion engines, washing machines, and air compressors. The crankshaft includes a first central axis, a second central axis coaxial with the first central axis, and a Two disks, and the eccentric shaft set between the two disks, the current processing method of this kind of crankshaft adopts, firstly weld each section together, and then process the required size on the lathe and other processing equipment, and process When the welding seam is processed, the strength of the crankshaft will be deteriorated, and it is difficult to ensure the positional accuracy of each section during welding. Chinese patent CN203906526U discloses a crankshaft, which includes a first central shaft, a second central shaft coaxial with the first central shaft,...

AI Technical Summary

Problems solved by technology

Although the strength of the crankshaft is high, the service life of the crankshaft is prolonged, and the position accuracy of the crankshaft is guaranteed, but the crankshaft has an integrated structure, which makes processing difficult, resulting in low production efficiency, unreliable performance, and insufficient practicality

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