Vibration-isolating lifting lug device connecting an exhaust pipe to a sub-frame

Abstract

The invention proposes a vibration-isolation lifting lug device for connecting an exhaust pipe to a sub-frame, which is composed of a lifting lug mounting bracket, a rectangular composite double lifting lug and a hook. The lifting lug mounting bracket is used to connect the rectangular composite double lifting lug and the subframe, and the rectangular composite double lifting lug is connected to the lifting lug mounting bracket through the lifting lug mounting bolt. The rectangular composite double lifting lug is a rubber lifting lug supported by the inner skeleton of the lifting lug and vulcanized rubber. It is similar to a rectangular structure. The lifting lug mounting bolts are welded at the upper end, and two hook mounting holes are arranged side by side at the lower part. The hook is a U-shaped elbow structure, and the two pipe heads at the open end penetrate horizontally into the two hook installation holes of the rectangular composite double lifting lug, and are fixed with the rubber lifting lug. Tracheal welding. Compared with the traditional vibration damping structure between the exhaust pipe and the sub-frame, the present invention can reduce the transmission of vibration and noise between the exhaust pipe and the sub-frame, improve the stiffness of the installation point of the sub-frame and the vibration-absorbing lug, and improve vibration reduction. The lateral limit and vibration damping capacity of the structure.

Description

technical field [0001] The invention relates to a vehicle chassis and power system vibration reduction and vibration isolation technology, in particular to a vibration isolation structure for installing an exhaust pipe. Background technique [0002] With the development and progress of society, people have higher and higher requirements for automobile NVH, and ride comfort has become one of the focuses of consumers. For most passenger cars, exhaust system mounting points are designed on the front subframe of the chassis. In order to slow down the transmission of the vibration noise of the exhaust system to the interior of the vehicle body through the subframe, a vibration isolation and noise reduction structure is generally designed at the installation point of the subframe of the exhaust system. The traditional vibration isolation structure is generally designed as a single lug structure, and an independent rubber lug is used to connect the exhaust pipe to the subframe thr...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a vibration-isolating lifting lug device connecting the exhaust pipe and the sub-frame. The technical problem to be solved is to reduce the transmission of vibration and noise between the exhaust pipe and the sub-frame, and improve the The rigidity of the installation point improves the lateral limit and vibration reduction capacity of the vibration-damping structure

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