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What is crossmember

2021-04-13

Crossmember is also called sub-frame, which refers to the support that supports the front and rear axles and suspension so that the bridge and suspension are connected to the "mainframe" through it. After installation, it can block vibration and noise and reduce its direct entry into the carriage. the sound of.

In general, the crossmember requires high rigidity in terms of structure. A rubber pad can be added between the mainframe and the crossmember. When the mainframe is deformed, the elastic rubber is deformed to weaken the crossmember’s restraint on the mainframe. Pay attention to the crossmember. When the crossmember is arranged on the chassis of the car, its front end should be as close as possible to the rear wall of the cab.

A-frame crossmember assembly includes a crossmember and a connecting bracket. The connecting bracket has a top surface and a side surface. The top surface of the connecting bracket is connected below the supporting point of the crossmember, and the side surface of the connecting bracket is connected to the side wing surface of the frame longitudinal beam Inside. The connecting bracket is arranged on the side wing surface of the frame longitudinal beam to avoid the upper wing surface of the frame longitudinal beam with the highest stress, thereby avoiding the problem of riveting hole cracking caused by stress concentration, and greatly improving the safety of the vehicle