A combined eccentric shaft

Abstract

The invention discloses a combined eccentric shaft, aiming to provide a bearing that can be smoothly installed on the crank position to replace the two-in-one connecting rod bush, so that there is no need to add liquid lubricating oil and the oil storage tank can be saved, and the production An eccentric shaft with reduced cost, easy maintenance and durability, the key points of its technical scheme are: two or more strip outer jackets whose cross-section is I-shaped and single or double or multiple single-side missing rectangular inner shafts. The sleeve and the two central shafts are combined. There is a certain space on the left and right sides of the length of the outer sleeve. The front horizontal shaft is combined with the left and right two inserting plates. The two inserting plates are planed with convex lines, that is, the inner and outer jackets are fitted with convex and concave. The crank position on the horizontal axis is used to install the bearing to replace the connecting rod bush. It is located between the crank position and the integral annular outer ring of the connecting rod head.

Description

technical field [0001] The present invention relates to mechanical transmission components, more precisely and more specifically to an eccentric shaft, namely a crankshaft, which is used to drive a connecting rod and a piston to move up and down in a cylinder liner in an internal combustion engine and is suitable for other occasions. [0002] technical background [0003] As the name implies, it deviates from the center of rotation instead of a straight line. If it is not straight, it is curved, and if it is curved, it is curved. The crankshaft has at least one crank position that is off the center and is used to slide and fit with one end of the connecting rod to rotate. When used When used in an internal combustion engine, the eccentric shaft can drive the connecting rod and the piston to move up and down once every revolution. The traditional method is that the single crankshaft is a whole in the prior art. Its structure and working principle are as follows: figure 1 As sh...

AI Technical Summary

Problems solved by technology

Its shortcoming is that in order to reduce the relative friction between the crank and the connecting rod bush during operation due to one motion and one static (the crank is moving, and the connecting rod bush is static if it does not follow the rotation of the crank), it is necessary to set up a closed oil storage tank for refueling. Injecting liquid lubricating oil, once the oil is short of oil or the oil passage is blocked, it will be burned due to high temperature; second, because the big head of the connecting rod is composed of two in one by means of a screw and a nut, the screw and nut will inevitably loosen during high-speed operation. In addition to the accident, there are also disadvantages such as high manufacturing cost and inconvenient maintenance of the integral crankshaft.

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