Brake rocker arm and engine

Abstract

The invention discloses a brake rocker arm and an engine, and belongs to the field of engine devices. The brake rocker arm comprises a rocker arm body, wherein a bearing is installed at the interior of one side of the rocker arm body, a connecting shaft is slidably connected into the bearing, the outer side of the connecting shaft is slidably sleeved with a idler wheel, an end cover is connected to the interior of the rocker arm body through threads, and a cross-shaped groove is formed in the outer surface of the end cover. According to the brake rocker arm and the engine, a tool is rotationally inserted into the cross-shaped groove and the end cover is rotationally dismantled, the connecting shaft is conveniently pulled out to disassemble, assemble and replace the idler wheel, and dust and impurities can be prevented from entering the bearing through the design of the end cover, so that abrasion of the connecting shaft is increased, and the service life of the connecting shaft is shortened; the positioning pin is pulled upwards, a left fixing ring and a right fixing ring are removed by moving towards the two sides, a telescopic rod can be conveniently pulled out to maintain and replace parts in a sleeve, the left fixing ring and the right fixing ring can be conveniently and rapidly connected and installed through the design of a fixing block, a clamping block and a positioning pin, and the maintenance efficiency is improved.

Description

technical field [0001] The invention relates to the field of engine devices, more specifically, to a brake rocker arm and an engine. Background technique [0002] The brake rocker arm is to make one end rise or fall under the action of the rotating vane of the camshaft, while the other end will act on the valve stem. When the lobes of the camshaft raise the outer lever arm, internally generated forces press against the valve stem, opening the acting valve. When the outer arm is allowed to return due to the action of the camshaft, the inner arm rises allowing the valve springs to compress closing the acting valve. [0003] In the existing brake rocker arm and engine, the connecting shaft is fixedly installed inside the rocker arm body, and it is inconvenient to remove and replace the roller, and the rotating contact between the roller and the cam is easily worn, which affects the working accuracy of the rocker arm for a long time. At the same time, the rocker arm When remov...

AI Technical Summary

Problems solved by technology

[0003] In the existing brake rocker arm and engine, the connecting shaft is fixedly installed inside the rocker arm body, and it is inconvenient to remove and replace the roller, and the rotating contact between the roller and the cam is easily worn, which affects the working accuracy of the rocker arm for a long time. At the same time, the rocker arm When removing other parts such as internal springs and pistons, it is necessary to remove the fixing devices such as nuts first, which will affect the maintenance efficiency of the rocker arm

Images