The side beam frame consists of two longitudinal beams and several cross beams, and the longitudinal beams and cross beams are connected into a solid rigid frame by riveting or welding.

The longitudinal beam of the side frame is generally made of low alloy steel plate, which is generally 16Mn. Its cross-sectional shape includes groove cross-section, box cross-section, Z-shaped cross-section and I-shaped cross-section.

Extended data

function

The front end of the truck frame and the front and rear ends of the frame are equipped with beam bumpers to prevent the radiator and fender from being damaged when the car suddenly collides; For cars, bumpers can play a decorative role. The bumper of the truck is equipped with a towing hook.

Some off-road vehicles have also installed hinge plates behind the bumper, so that they can save themselves when they get caught in slippery roads. Trucks and some large buses sometimes have to tow trailers, so the rear end of the frame is generally equipped with towing hooks. Most traction hooks are elastically connected with the frame crossbeam through spiral springs, and are reinforced with reinforcing beams and corner braces. The towing hook can swing around the axle pin in the plane of the frame, and is equipped with an anti-falling device, which has the functions of buffering, steering and anti-falling during towing.

Baidu Encyclopedia-Side Beam Frame