Balance shaft assembly and heavy vehicle with same

Abstract

The invention discloses a balance shaft assembly and a heavy vehicle with the same. The balance shaft assembly comprises main body supports, plate spring seats, short shafts, rotary parts, oil sealing assemblies, a first support connection assembly and a second support connection assembly, wherein one end of each plate spring seat is installed in a step installation hole in the outer side of the corresponding main body support, and the other end of each plate spring seat is exposed out of the corresponding main body support; each short shaft is installed in an installation hole where the corresponding main body support is aligned with the corresponding plate spring seat in a hot charging mode, at least part of each short shaft is exposed of the corresponding plate spring seat, and the end portion, close to the corresponding main body support, of each plate spring seat is compressed on the corresponding short shaft through the corresponding main body support in the radial direction of the corresponding short shaft; each rotary part is arranged between the corresponding plate spring seat and the corresponding short shaft and can make the plate spring seat and the short shaft relatively rotate in the circumferential direction of the center axis of the short shaft; the oil sealing assemblies are arranged at the end portions of the two sides of the plate spring seats so as to seal the spaces defined by the plate spring seats and the oil sealing assemblies; the first support connection assembly connects the upper portions of the main body supports on the two sides in a rigid connection mode; and the second support connection assembly connects the lower portions of the main body supports on the two sides in a flexible connection mode, so that the lower portions of the main body supports on the two sides swing relatively within a limited range. The problem of stress concentration can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a balance shaft assembly and a heavy-duty vehicle with the same. Background technique [0002] On the commercial vehicle with double rear axle structure, the balance suspension is a common structure of the suspension system, and the balance shaft of the balance suspension has an integral balance shaft and a split balance shaft. The split type balance shaft mainly refers to that the two main brackets of the balance shaft are respectively installed and fixed on the two longitudinal beams of the frame, and there is no rigid connection between the two main brackets except for the cross beam. Integral balance shaft means that the left and right main brackets of the balance shaft are assembled into a whole through structures such as connecting plates, rigid shafts or frame beams, and then connected with the frame together. [0003] The existing integral balance shafts are mainly Stey...

AI Technical Summary

Problems solved by technology

When the whole vehicle is overloaded, the weight acts on the lower part of the leaf spring seat through the short axis, which will easily cause the deformation of the lower part of the leaf spring seat, destroy the sealing performance between the end cover and the leaf spring seat, and cause oil leakage on the balance shaft

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