Cam shaft oil pressure seal end cover

Abstract

The invention discloses a cam shaft oil pressure seal end cover which can prevent separating of a lip-shaped maze sealing ring and can seal a cam shaft end with high reliability. The cam shaft oil pressure seal end cover comprises an end cover body (7) and a framework lip-shaped maze sealing ring (5) hooping a cam shaft to prevent engine oil leakage. The end cover body (7) is assembled at the power input end of the cam shaft and fixed connected to the end face of an oil storage cavity opening of a pump box (1). A roller and outer ring assembly (3) passing through the cam shaft is arranged in a step hole in the inner side of the end cover body (7), and a main lip opening and an auxiliary lip opening of the lip-shaped maze sealing ring (5) hoop the neck of the cam shaft (4) to form a sealing strap which is also arranged in the step hole in the inner side of the end cover body (7). A reverse conical anti-separating structure preventing the sealing ring from separating in the axial direction is arranged on an installing seat hole, provided with the lip-shaped maze sealing ring (5), of the end cover body (7), and the reverse conical anti-separating structure is an inverse-conical-angle conical hole with the big end inside. The cam shaft oil pressure seal end cover effectively eliminates the failure, occurring frequently at the prototype sample stage, of separating of the framework lip-shaped maze sealing ring, and a sealing structure is reliable.

Description

technical field [0001] The invention relates to a sealing end cap applied to an oil pump assembly of a diesel engine to prevent lip-shaped labyrinth sealing ring from falling out. More specifically, the invention relates to an oil pressure sealing end cap of a camshaft of an oil pump assembly. Background technique [0002] The diesel engine oil pump assembly is the main part of the diesel engine fuel system. It uses the rotation of the camshaft to drive the oil pump plunger to raise the low-pressure fuel to high pressure, and then sprays it into the cylinder of the diesel engine for combustion. During this process, the fuel in the oil pump assembly The main moving parts include camshafts, tappet assemblies, bearing bushes, bearings, etc., all of which are subjected to heavy mechanical loads, so reliable lubrication is required, and the heat generated during operation is required to be taken away by the flow of lubricating fluid. In order to achieve this purpose, there must b...

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of cover baffle on the sealing ring gear head are: (1), the baffle structure needs to occupy a certain space position, and when the installation position of the oil pump is very compact, its installation on the engine is often difficult to coordinate; ( 2) Each additional component will bring about an increase in cost and a decrease in reliability

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