Brief analysis on safety technology of tower crane

According to incomplete according to the plan, since 1998, in crane, tower crane accident, a dying 3 major accidents have 25, more than 76 people were killed and 18 people were seriously injured.And according to the Chinese authorities on the investigation and analysis of 1100 cases of accident of tower crane, tower crane such as tilting and armless accident accounts for 60% of tower crane accident, and the main cause of the accident is caused by overload and illegal operations, tower crane manufacturing quality is poor, of course also has a direct relationship between the safety device or failure.If through the familiar standard, not only can guarantee the safety in production, but also can flexible use of specification.Here are prescribed by I was part of the tower crane, norms and standards, as well as personal understanding.
1 the classification of the tower crane inspection rules
(1) the type of inspection in accordance with the provisions, the test method of product samples, to show that sample is in conformity with all requirements specified standard or technical specification.Generally by the manufacturer or the national and local quality supervision institutions.
(2) the factory inspection product delivery, user acceptance.Including performance test, safety device testing, continuous operation test.
(3) regular inspection user during normal use, including every time transfer site.After installation work in the same place, for once a year, but the safety device for once every six months.Major failure should also be regular inspection after repair.Regular inspection including performance test, the safety device.
2 tower crane safety device
   Crane moment limiter, lifting weight limiter, car horns are broken rope protection device and the broken shaft protection devices, hoisting height limiter, amplitude limiter, rotary stop, stop walking, clip rails, anemometer, hook and the reel to prevent to take off the rope device and so on.
  The distinction between the three tower crane non-work state and working state
Have finished installation erection of tower crane, hoisting, all institutions to stop movement, cut off power supply, and wind protection measures, referred to as the non-working state.Operation of tower under control driver, including hoisting operation, no-load running or intermittent downtime, known as the working state of tower crane.
   So in the condition of tower crane work, each staff should seriously un-experienced operator of the machine, and familiar with all kinds of industrial equipment and functions of the machine, if the crane in any situation at work, each staff to be able to timely find out problems and to repair fault, to avoid unnecessary trouble.So we also hope that each manufacturer or a construction base before using crane, theory, several times for every employee to tutorial, make them to further understand and familiar with crane operation, as the saying goes, practice makes perfect, that's the point.