2, The prevention for the falling accidents

The controlling, inspection, maintenance operations are usually conducted in the high air. The ladder, handrails and platform are the basic protective devices. In the above-mentioned working areas, the retainer, platform must be installed according to the provisions to prevent the personnel falling down; pay attention to not overloading while the bridge box and cage are traveling; the braking and bearing component be in line with the safety requirements; equipping with the reliable anti-falling device. The electrical equipments must have the safety device and check periodically to prevent accidents.

3, The prevention for the spreader or hanging objects falling

The hanging objects or the spreader falling takes a large number in the hoisting injuries. The occurrence of such accident is mainly due to the improper tie hanging, driver’s bad operation, improper choosing for the spreader and rigging, the lifting and overloading limit device fail to work. Therefore, we must strengthen protective measures: firstly guarantee the effective of the lifting height limit device and avoid the over hoisting accidents, the driver must check the limit device whether it is normal before the operation. Not allowed to start once the failure is found. Secondly, we must check the hook carefully to ensure that there is no tear and wear or cracks deformation. Forbid using the scrapped ones. Thirdly, check the status of the steel rope. Inspect the steel rope carefully from start to finish every shift. Make sure that there is no the phenomena like the wearing, broken, break off, deformation, kinking, bending etc.. Replace them timely if necessary.

 4, The prevention for the toppling, breaking or the collapsing

   Many rollover accidents happen on the mobile crane and tower crane which travels along the rail. The main causes are overloading, improper supporting and shoring, hoisting the objects on the unsteady foundation or turning with full load and overspeed, Prevention measures are that: drivers should strictly enforce the regulations, and prevent careless operation. For the tower crane, not only preventing the overloading, but also pay attention to the required counterweight, ballast, rail laid and qualified installation.  box girder gantry crane

The fracture collapsing accidents include structural and spare parts breaking such as the boom broken and spindle breakage. These accidents are mainly caused by overloading, structure and parts defects, illegal operation, natural disaster and so on. To prevent rollover and broken accidents because of the damaged mechanical parts, check the main parts and safety devices before every operation. Additional, when the wind speed has exceeded 20m/s in the process of construction, cease the operation immediately. In the process of installation, encounter the wind of 13m/s or the bad weather such as the rainy and snowy day, stop operating.  

5, The prevention for the electric shock accidents

The electric shock accidents usually happen on the crane machinery. One kind occur on the repairing and maintenance personnel mainly due to encountering the illegal operation, touching the lines and leakage. The other kind is the staff mistakenly combines the gates when other personnel are conducting the maintenance. Therefore, shut down the power and send the special staff to supervise while maintaining the machine. Meanwhile pay attention to check the grounding resistance and insulation resistance of the crane and ensure they are in good condition. Another one is that the crane is closing to the power line and cause the accident. So train and educate the driver keeping a certain distance with the transmission lines as the gantry crane is traveling and operating.