Lifting Basics

Lifting machinery, is used for vertical lifting or moving heavy objects vertically and horizontally electromechanical devices. The range is specified at rated capacity greater than or equal to 0.5t lift, rated capacity greater than or equal to 1t, and lift height is greater than or equal to 2m,  steel crane   and load-bearing fixed in the form of electric hoist.
2. Lifting work characteristics
(1) Lifting typically have more complex structures and large institutions, to complete a lifting movement, once or several times horizontally.
(2) a variety of weight lifting, the load is changing.
(3) Most of lifting machinery, you need to operate within the larger context, activities, larger space.
(4) some lifting, carrying personnel require direct rail, platform or rope to do lifting movement (such as elevators,overhead bridge crane lifting platforms, etc.), which directly affects the reliability safety.
(5) exposed, moving parts are more often associated with lifting operations and personnel in direct contact (eg hook, wire rope, etc.), a potential risk factor for many sporadic.
(6) operating environment is complex.
(7) the job often requires people, together, in a single operation.
The existence of many of the above risk factors, determines the lifting injury accident-prone.
3 crane safety working conditions
In order to ensure the safety of the crane work,hoist gantry crane crane design should meet the following three basic conditions.
(1) The metal structure and mechanical parts should have sufficient strength, rigidity and resistance to buckling.
(2) the machine must have the necessary stability against overturning.
(3) having a prime mover power to meet the performance requirements of the job, brakes provide the necessary braking torque.