When the lifting bridge is applied to different positions on the vehicle, its function and capability will be different. At present, in the truck with lifting bridge, the double rear axle towing vehicle is more common. It has a rear axle lift, that is, 6X2R, and a middle bridge hoist, that is, 6X2F. So what's the difference between these two lifting bridges in the tractor?

In the post lifting contrast, the lifting structure is simpler.

Rear lifting bridge: after driving axle, there will be no interference with transmission shaft. The arrangement of axle and chassis parts is more conventional, and the structure is simpler than the middle axle lifting.

Middle lift bridge: before driving the bridge, because to avoid interference with the transmission shaft, usually use the axle of the axle, the V type push rod layout should also be changed (offset V push).

Which is better in the post - contrast enhancement

1. the rear axle lifting structure is simpler and to some extent an advantage.

2. generally speaking, due to the interference of the transmission shaft, the height of the lifting bridge is relatively small.

3. after lifting the lift bridge, the vehicle is equivalent to the 4X2 drive, and the rear axle's overall wheelbase is smaller, so the turning radius is less (but if the lifting bridge has a steering function, the steering in the lift is more flexible).

4. due to the influence of the structure of the tractor (saddle is located between the two rear bridges), the ultimate load of the final bridge is the largest when dragging, so the weight of the rear lifting bridge is greater than that of the middle lift bridge when the lifting bridge is descended.

5. as a result of the influence of the structure of the tractor (after the saddle is at the rear of the second axis), when the rear axle is raised, the axle load will be overly concentrated on the drive bridge when the rear axle is influenced by the cantilever Liang Liju, while the axle load of the steering bridge decreases, so the adhesion of the front axle will decrease, to a certain extent, it affects the turn performance and even the warp phenomenon. Therefore, foreign trucks have movable saddles to transfer axle loads.

In general, the promotion and the post lifting have the advantages in fact, and the lifting bridge will be more common at home and abroad after the application of the tractor at home and abroad because of the simple structure, the flexible steering and the distribution of the axle load.