Crane is intermittent , repetitive work, extract the device by raising and lowering equipment transport materials. Their work experience feeding , transporting , unloading and other processes on the return distant . Larger scope of its work , a lot of risk factors . As construction elevators and lifts with cage ( or car ) when transporting personnel and materials , Betti up in the air security personnel , materials, etc. to enhance the effectiveness depends on the rope and some security devices.
Integrated crane work , and can be summarized as follows:
1 lifting machinery generally have a huge metal structure and more complex organizations , to complete a lifting motion , one or more horizontal movement . Job, often several different simultaneous operation of the direction of movement , greater technical difficulty.
2 The hanging of a variety of materials , the load is changing. Weighing hundreds of tons , or as long as tens of meters, very irregular shape , as well as granular , melt state, inflammable and explosive dangerous goods , so that the lifting process is complicated and dangerous .
3 Most lifting machinery needed to run in a wide range , some want to install rails and wheels, tires or tracks , as well as the need to walk on the rope . Space is large, dangerous surface also increases.
4 exposed parts are more active , and often in direct contact with the lifting operations personnel , many potential risk factors for sporadic . ,
5 . Complex operating environment , industrial and mining enterprises , docks , construction, construction site transport, tourism and other places , there are lifting machinery running. Workplace also often encounter high temperature , high pressure flammable, explosive, transmission lines, magnetic and other dangerous elements, but also the safety of equipment and personnel threat.
6 jobs often require people with , there is a big difficulty. Requires driving , directing, rigging and other skilled workers with the coordination work , take care of each other . The operator shall now deal with the emergency capabilities.
7 lifts, elevators, lifts and other persons directly carrying on the rails, platforms , ropes do lift, displacement movement , danger lurks in many accidental factors .