Overrun clutch capable of prolonging service life

Abstract

The invention relates to an overrun clutch capable of prolonging the service life. The overrun clutch comprises a driving shaft, a driving inclined fluted disc, a driven ring and rolling shafts. The driving shaft is fixedly connected to the driving inclined fluted disc, and the rolling shafts are arranged between the driving inclined fluted disc and the driven ring. The overrun clutch is characterized in that inward arcs and outward arcs are arranged on wedge surfaces of helical teeth of the driving inclined fluted disc. As the inward arcs and outward arcs are arranged on the wedge surfaces of the helical teeth of the driving inclined fluted disc and the center point of the driving inclined fluted disc and the centers of circles of the inward arcs and those of the outward arcs are on a same straight line, the arcs on the wedged surfaces of the helical teeth slide downward to loosen more quickly when the rotating speed of the driven ring surpasses that of the driving inclined fluted disc; the arcs on the wedged surfaces of the helical teeth are upward to lock more firmly when the rotating speed of the driving inclined fluted disc surpasses the driven ring. Moreover, a distance of about 20mm is needed for abrasion of 0.5mm high steps on the wedged surfaces as well, so that the service life of the overrun clutch is effectively prolonged.

Description

technical field [0001] The invention relates to an engineering machinery driving device, in particular to an overrunning clutch capable of prolonging service life. Background technique [0002] With the rapid development of construction machinery, the use of overrunning clutches on construction machinery is also quite popular, but the overrunning clutches currently on the market rely on the extrusion friction between the roller and the wedge surface to transmit the working torque, while the wedge surface on the active helical toothed plate is all It is in a straight line. When the roller and the wedge surface are worn to a certain point, the wedge surface will form a stage. When the wedge surface wears longer than 10mm, a stage of about 0.5mm will be formed on the wedge surface. When the height exceeds 0.5mm, the roller will slip between the active helical toothed plate and the driven ring, and the roller can no longer get stuck on the driven ring, and the overrunning clut...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of construction machinery, the use of overrunning clutches on construction machinery is also quite popular, but the overrunning clutches currently on the market rely on the extrusion friction between the roller and the wedge surface to transmit the working torque, while the wedge surface on the active helical toothed plate is all It is in a straight line. When the roller and the wedge surface are worn to a certain point, the wedge surface will form a stage. When the wedge surface wears longer than 10mm, a stage of about 0.5mm will be formed on the wedge surface. When the height exceeds 0.5mm, the roller will slip between the active helical toothed plate and the driven ring, and the roller can no longer get stuck on the driven ring, and the overrunning clutch needs to be replaced. According to the loading machinery currently on the market, it is about The overrunning clutch will be scrapped in a year and a half, and it is quite troublesome to replace it

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