Torsion resistant draw bar assembly of sideband limiting block below gearbox

Abstract

The invention relates to a torsion resistant draw bar assembly of a sideband limiting block below a gearbox. The assembly comprises a torsion resistant draw bar framework, a bolt, a soft pad baffle, a soft pad dustcoat, a front rubber soft pad, a rear rubber soft pad, a nut and a bush, wherein the bolt successively penetrates through the soft pad baffle, the front rubber soft pad, the soft pad dustcoat, the rear rubber soft pad and the torsion resistant draw bar framework to be fixedly connected with the nut; at least two protrude structures are arranged on a partition board in the middle of the soft pad dustcoat towards the direction of the soft pad baffle; and the front rubber soft pad comprises a metal framework and a rubber body which wraps the metal framework in a vulcanization manner, which are symmetrically arranged by using the center of the front rubber soft pad as a center. According to the technical scheme, a manner that the suspension rigidity and the lasting quality demands are improved, the comfort performance is lost and the cost of parts and components is increased does not need to be used for controlling the displacement number of a power assembly.

Description

technical field [0001] The invention belongs to the field of powertrain suspension systems, and specifically refers to a torsion-resistant tie rod assembly with a limit block on the lower side of a gearbox. Background technique [0002] The existing front-drive transverse powertrain, the suspension system mainly has two structural forms, the first suspension system structure is the structure of the front side suspension and the rear side suspension under the gearbox, this structure relies on the front Side mounts and rear mounts to overcome powertrain torsional forces. The second type of suspension system structure is to overcome the torsional force of the powertrain by pulling the rod below the gearbox. This structure is that when the vehicle accelerates forward, the lower side of the gearbox moves forward, and the torsion rod is stretched. [0003] Because both of the above two suspension systems need to limit the displacement of the powertrain to a certain extent, in ter...

AI Technical Summary

Problems solved by technology

[0010] 1. In order to meet the vibration isolation requirements, the rubber stiffness of the powertrain mount is generally not greater than 300N / mm. Therefore, the torsion-resistant tie rod cannot effectively control the displacement of the powertrain, causing the powertrain to rotate during the starting process. The angle (around the Y axis) is large, and the displacement of the engine cannot be controlled, which will cause interference with peripheral parts. At the same time, when the rubber of the torsion tie rod is compressed, the displacement is relatively large, which has a considerable impact on its durability.

[0011] 2. If the requirements of the limited powertrain are met, the torsion-resistant tie rods are required to have high rigidity, and if the rigidity is high, the ability to isolate vibrations will deteriorate, and the comfort of the vehicle will deteriorate

[0012] The torsion tie rod assembly of the prior art has been unable to satisfy the above two contradictory problems

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