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5. Structure and stability of truck
It is very important for operator to know the truck’s structure and relationship between load
and stability.
Caution The structure of the truck
The basic structure of the truck is mast (include mast and
forks) and body (include tire).
The lift truck keeps the balance of weight between the truck
body and the load on the forks with the center of the front wheels
as a fulcrum when the rated capacity load is placed in position.
Due care should be paid to the weight and the center of
gravity of loads to maintain the stability of the truck.
Caution Load center
There is difference because of the loads’ shape, gravity, such
as box, board and large roller. It is very important to distinguish
the difference and the gravity center of loads.
Warning!
If the truck is going to turn over, do not attempt to get out of the truck, because the
speed of overturn is much fast than you. You should hold the steering wheel handle, and
this practice will let you in the seats. Please tie safety belt.
Caution Gravity and stability
The combined center that is composed of the barycenter
and the load center determine the stability of lift trucks.
When unloaded, the barycenter does not change;
When loaded, the barycenter is determined by the truck
and the load’s center.
The barycenter is also determined by the tilting and
lifting of the mast.
The combined center is determined by these factors:
Load’s size, weight and shape.
The lifting height.
The tilting angle.
The pressure of the tire.
The radius of turning.
The road and grade’s angle.
The attachments.
