Self-lubricating structure of pumping rocker arm bearing and pump truck

Abstract

The invention relates to the technical field of engineering machinery and particularly relates to a self-lubricating structure of a pumping rocker bearing and a pump truck. The self-lubricating structure of the pumping rocker bearing comprises a rocker arm, an annular bush, a spacer bush, a spherical bearing and a driving piston rod. The annular bush can rotate circumferentially arbitrarily; lubricating grease in a front lubricating oil channel in a bearing pedestal successively enters a first oil tank and a second oil tank of the annular bush and then enters between the spherical bearing anda bulb of a piston rod of an oil cylinder through the chromeplated spacer bush, the rocker arm and an oil hole of the spherical bearing; driven by the oil cylinder, once the rocker arm swings, a synchronous lubricating pump injects the lubricating grease into the lubricating part between the spherical bearing and the bulb of the piston rod of the oil cylinder through the channel, so that smoothness between a fixed part and a movable part is achieved; the spherical bearing of the pumping rocker arm (the important mechanism) is automatically lubricated with a relatively low cost; the service life of the spherical bearing is prolonged and the gap adjusting period is prolonged; the lubricating grease is injected immediately, so that the swinging range of the rocker arm is guaranteed and the pumping efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a self-lubricating structure of a pumping rocker arm bearing and a pump truck. Background technique [0002] At present, in the field of construction machinery, especially on pump trucks, the pumping and distributing rocker arm mechanism includes rocker arms, pipe shafts, piston rods and other components. The cylinder piston rod drives the rocker arm, so that the rocker arm and the pipe shaft are in the bearing of the pipe shaft together. During the working process, the cylinder piston ball head has a great impact on the spherical bearing, such as poor lubrication, it is easy to cause early wear of the spherical bearing, the swing amplitude of the rocker arm is reduced, and the pumping efficiency is reduced. At present, the rocker arm bearing lubrication method is: install an oil cup above the rocker arm, the oil hole leads to the two spherical bearings, and manual...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pumping rocker arm bearing self-lubricating structure and a pump truck to solve the problem of untimely refilling caused by the manual filling of lubricating grease between the existing pumping rocker arm spherical bearing and the piston rod ball head. Easy short-term wear and small rocker swing

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