Rear suspension structure of rear transverse passenger car frame of engine

Abstract

The invention provides a rear suspension structure of a rear transverse passenger car frame of an engine, comprising rear longitudinal beams, a special-shaped connecting bracket and a rear transverse frame with an inner transverse gearbox and an engine assembly, wherein the rear transverse frame is of a prism composed of upper, lower and outer cross beams as well as left upper, left lower, right upper and right lower oblique beams; six parallel vertical beams are sequentially arranged between the upper and lower cross beams; inlaid cavities clamped between the left second and left third vertical beams and between the right third and right second vertical beams are connected with side connecting plates in the special-shaped connecting bracket in an inlaid mode; the side connecting plates are connected with the rear longitudinal beams sequentially through a middle connecting plate and an upper connecting plate; and the side connecting plates are provided with engine suspension bracket mounting holes near the upper cross beam. In addition, left upper and right upper connecting beams, left lower and right lower connecting beams as well as left inner and right inner fixed brackets are additionally arranged so as to further improve the stress stability of the structure. The structure designed by the invention is relatively strong in stress stability, relatively high in safety, relatively high in integration degree and small in space occupation.

Description

technical field [0001] The invention relates to an arrangement structure of a passenger car frame system, which belongs to the technical field of automobile frame systems, and in particular relates to a rear suspension structure of a passenger car frame with an engine rear transversely placed, and is specifically suitable for realizing a rear transversely placed engine , to enhance its stress stability. Background technique [0002] The frame is an automobile component that connects the body and the engine, transmission system, suspension, steering, brake and other assemblies. The frame should have sufficient strength and appropriate rigidity. For buses with a height of 7-9 meters, in order to increase the passenger space, the method of lengthening the wheelbase and reducing the length of the front and rear overhangs is often adopted when the length of the vehicle remains unchanged. For buses with front and middle door structures, The engine mostly adopts a rear-mounted str...

AI Technical Summary

Problems solved by technology

[0004] First of all, although the rear suspension frame in this design (equivalent to the rear transverse frame in the present invention) can place the engine assembly horizontally, there are only longitudinal beams and rear suspension frames connected to each other between the rear suspension frame and the vehicle frame. This connection leads to the fact that the mass of the engine assembly and gearbox assembly is basically borne by the rear suspension frame alone, and it is difficult to share it with the frame, the force stability is weak, and the rear suspension frame is easily damaged;

[0005] Secondly, the rear suspension frame in this design is a rectangular structure, which not only needs to occupy a large space, but also has weak stability, which is not conducive to enhancing the stability of the engine assembly after it is placed horizontally

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