High-reliability multi-stage vibration reduction auxiliary support device, gearbox assembly and truck

Abstract

The invention discloses a high-reliability multistage damping assistant support device, a transmission case assembly including the High-reliability multilevel damping assistant support device, and a truck. The high-reliability multilevel damping assistant support device comprises a variable section leaf spring, a rubber suspension module, and end support mechanisms; the section of the variable section leaf spring changes in the length direction, while the width remains unchanged; light weight of a vehicle is achieved at the premise of ensuring leaf spring equal strength. The rubber suspensionmodule with interlayer structure prevents the defect that perforating a leaf spring for a conventional assistant support is required; the reliability of the leaf spring is improved. The assistant support device for a transmission case employs the variable section leaf spring and the rubber suspension module to form a two-stage damping system, thereby relieving vehicle body vibration, relieving great impact load during traveling, improving assistant support reliability, and preventing flywheel shell damage and connection bolt loosening.

Description

technical field [0001] The invention belongs to the technical field of vehicle parts, and relates to a high-reliability multi-stage vibration-damping auxiliary support device, a gearbox assembly with the auxiliary support device and a truck. Background technique [0002] As an auxiliary mount in the powertrain mount system, the gearbox mount ensures that the static bending moment of the flywheel housing of the engine and gearbox meets the requirements of use, and at the same time improves the service life of the engine mount components. The gearbox suspension beam is an important supporting element in the gearbox suspension, so higher requirements are put forward for its strength. [0003] Heavy-duty truck gearboxes have harsh working conditions, and users have higher and higher requirements for ride comfort and vehicle handling. While the gearbox functions are improved, the requirements for gearbox auxiliary supports are also correspondingly increased. Under severe working ...

AI Technical Summary

Problems solved by technology

[0006] (1) There are assembly holes on the leaf spring beam, which will cause the beam to break under severe working conditions and reduce the reliability of the leaf spring beam;

[0007] (2) Leaf spring beams are processed with leaf springs of equal cross-section, which is not conducive to the lightweight design of the vehicle;

[0008] (3) The leaf spring beam and the connecting bracket are fixedly connected by a transition bracket and a rubber metal cushion, which limits the degree of freedom of the auxiliary support and causes the powertrain to be over-constrained;

[0009] (4) The rubber metal cushion is not equipped with a limit device, and the auxiliary support device will cause the rubber suspension block to tear under a large impact load, which reduces the reliability of the rubber suspension block

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