Rocker arm seat and rocker arm shaft assembly

Abstract

The rocker arm seat and rocker arm shaft assembly comprises a seat body, two positioning bosses are arranged on the two sides of the seat body, two hinge shafts are installed on the two positioning bosses, two rocker arm shafts arranged in parallel are rotationally arranged on the two hinge shafts, an oil groove is formed in the bottom end of the seat body, and an oil groove is formed in the bottom end of the seat body. Locking bolts which penetrate through the positioning bosses and extend into the oil groove are arranged on the two hinge shafts, and a sealing ring which is arranged around the oil groove is arranged on the bottom face of the base body. The rocker arm seat and rocker arm shaft assembly belongs to the technical field of valve rocker arms, a hinge shaft and a rocker arm shaft are in arc surface contact, and it is ensured that the axial force of a locking bolt for fastening the rocker arm shaft and the rocker arm seat is not attenuated in the long-term use process of a diesel engine; the hinge shaft and the rocker arm shaft are assembled on the seat body in a stacked mode, assembly manufacturability is good, maintainability is good, and it can be guaranteed that the two structures are in surface contact when limited, the contact area is large, and locking is firm.

Description

technical field [0001] The present invention relates to valve rocker arm technology, and more particularly, to a rocker arm seat and rocker arm shaft assembly. Background technique [0002] At present, the diesel engine rocker arm seat and rocker arm shaft assembly, when the intake rocker arm shaft and the exhaust rocker arm shaft are not coaxial (non-parallel or non-coplanar), generally the lower semi-circular arc shaft of the intake rocker arm shaft is connected. The surface and the surface of the lower semi-circular arc shaft of the exhaust rocker arm shaft are matched with the semi-circular arc hole opened on the rocker arm seat and are separately fastened on the rocker arm seat. [0003] Although this method has a simple structure, few parts, and a simple assembly process, it is sometimes due to the inherent limitations of this structure. During assembly, the inner and outer arc surfaces are matched, and the radial compression is line contact, and the rocker shaft and t...

AI Technical Summary

Problems solved by technology

[0003] Although this method has a simple structure, fewer parts, and simple assembly process, it is sometimes limited by the inherent limitations of this structure. When assembling, the inner and outer arc surfaces cooperate, and when radially pressed, it is a line contact. Fasten the rocker shaft and the rocker. The axial force of the bolts of the arm seat is easily attenuated, resulting in failure of the rocker arm assembly, such as loosening of fasteners

Images