Power assembly suspension with variable three-way rigidity and adjustable height and limiting distance

Abstract

The invention discloses a power assembly suspension with variable three-way rigidity and adjustable height and limiting distance. The suspension comprises an upper suspension assembly body and a lowersuspension assembly body, wherein the bottom of the upper suspension assembly body makes contact with the top of the lower suspension assembly body, a screw is arranged on the lower side of the uppersuspension assembly body, and the screw downwards penetrates into the edge of the top of the lower suspension assembly body from the upper suspension assembly body to prevent the upper suspension assembly body from rotating in the using process. The upper suspension assembly body comprises a first inner framework and a first outer framework. The lower suspension assembly body comprises a second inner framework and a second outer framework. The three-way rigidity, the height and the lower limiting distance of the suspension device are changed by rotating the connecting bolts; the upper limiting distance is changed by rotating the upper suspension assembly body, meanwhile, pressure and pressure reduction mixed stress of rubber is achieved, the compression rigidity and the tensile rigidity are basically the same, the development efficiency and quality of the product vibration isolation performance are guaranteed, various functions of the suspension can be guaranteed in the actual workingcondition, the structure is compact, and the reliability is high.

Description

technical field [0001] The invention relates to an automobile accessory, in particular to a power assembly suspension device for buffering an engine. Background technique [0002] Powertrain mounts are widely used as buffer devices in the automotive field. Generally speaking, powertrain mounts include two skeletons connected to the engine bracket and frame bracket respectively and rubber between the two skeletons. The rubber is vulcanized as one with the two brackets. However, the rubber stiffness is greatly affected by factors such as temperature and aging, resulting in different heights between the center of the engine (such as the center of the fan) and the center of the accessories (such as the center of the radiator wind circle), or the limit starting point is increased due to the harsh road conditions. The frequency of action causes many NVH problems, and even the interference between the powertrain and accessories, which affects the ride comfort; at the same time, th...

AI Technical Summary

Problems solved by technology

However, the rubber stiffness is greatly affected by factors such as temperature and aging, resulting in different heights between the center of the engine (such as the center of the fan) and the center of the accessories (such as the center of the radiator wind circle), or the limit starting point is increased due to the harsh road conditions. The frequency of the action will cause many NVH problems, and even the interference between the powertrain and accessories will affect the ride comfort; at the same time, there are errors in calculation and prediction, and the manufacturing process error of the mount will also lead to the mount of different batches of samples Different stiffnesses lead to repeated production of samples and tests during the product development process, which affects the efficiency and quality of research and development

Although some mounts already have the function of stiffness adjustment, they can only adjust the stiffness in one direction, resulting in a change in the ratio of stiffness in the three directions, which affects the vibration isolation performance of the mount.

Images