a gearbox mount

Abstract

The invention discloses a gearbox suspension. The gearbox suspension is characterized by comprising a bracket; a first mounting cavity penetrating vertically is formed in the bracket; an outer skeleton is arranged in the first mounting cavity; an inner skeleton is arranged above the outer skeleton; supporting main springs are symmetrically arranged at the lower surface at the two ends of the inner skeleton; the upper ends of the supporting main springs are connected with the lower surface of the inner skeleton; and the lower ends of the supporting main springs are connected with the upper surface of the outer skeleton. The gearbox suspension disclosed by the invention has the advantages that the inner skeleton is arranged above the outer skeleton; the two ends of the inner skeleton are connected with the outer skeleton through the vertically arranged supporting main springs; through the adoption of the vertically arranged supporting main springs, the lateral stiffness of the inner skeleton and the outer skeleton can be effectively reduced, a low ratio of dynamic stiffness to static stiffness in a vertical direction, which is generally about 1 to 1.2, is achieved, so that the vibration isolation effect of a power assembly is effectively improved, the creep resistance is good, and the NVH performance of a complete vehicle can be well met.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a gearbox mount. Background technique [0002] The layout of the powertrain is a horizontal front-drive four-cylinder engine has been widely used in joint ventures and domestic brand models, but due to the reciprocating unbalanced inertia force and moment fluctuations generated by the engine itself, and the balance of the four-cylinder engine itself is poor , so for the mount system in the powertrain, how to effectively isolate the vibration of the vehicle body caused by the low-frequency and high-frequency excitation of the engine itself is particularly important, and the gearbox mount of the powertrain must have good fatigue durability. Strong part structure, good creep resistance, and at the same time, the main spring of the gearbox suspension is required to have a low dynamic-to-static ratio performance, so as to better play the role of vibration isolation of the powertrain. [000...

AI Technical Summary

Problems solved by technology

The dynamic-to-static ratio of the above ratio is too high, which makes the vibration isolation effect of the gearbox mount poor, and it is difficult to meet the NVH performance of the whole vehicle

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