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Source : www.en.bqeot.cn Time : 2013-10-28

Heavy fall, pinching, lifting trolley overtravel traveling crane tipping transgressions, overhaul mechanical damage, etc., is a common bridge type crane accident types. Minimize the risk of lifting operations, you need to set a variety of safety devices (see table below).

No.	Safety device name	Bridge crane	Gantry crane	Loading bridge
1	Overload limiter	Starting weight> 20t must be installed	Starting weight> 10t must be installed	Should be installed
1	Overload limiter	3 ~ 20t lifting capacity must be installed	3 ~ 10t lifting capacity must be installed	Should be installed
2	Up limit position limiter	Power-driven should be installed	Power-driven should be installed	Should be installed
3	Down limit position limiter	Power-driven adapted to be attached	Power-driven adapted to be attached	Should be installed
4	Movement limit position limiter	Power-driven in carts and trolleys run limit position should be installed
5	Chain protection	① should be installed	① should be installed	② should be installed
6	Buffer	Should be installed	Should be installed	Should be installed
7	Rail clamp anchoring device	Outdoor work shall be installed	Outdoor work shall be installed	Outdoor work shall be installed
8	Boarding signal button	There should be mounted cab	There should be mounted cab	Cab should be installed in the moving part
9	Anti-rollover safety hook	Single main beam and the main beam side should be installed off the hook
10	Maintenance hoists	Should be installed	Should be installed	Should be installed
11	Sweep rails and supporting frame	Should be installed	Should be installed	Should be installed
12	Track plate end stop	Should be installed	Should be installed	Should be installed
13	Slip line shield	Should be installed
14	Exposed moving parts shields	Should be installed	Should be installed	Should be installed
15	Electrical Equipment Covers	Outdoor work shall be installed	Outdoor work shall be installed	Outdoor work shall be installed

Note:

① For the bridge crane, crane from the building board between the door and the traveling mechanism; boarded by the cab door hatch bridge and trolley run institutions; located in the sports section of the cab into the cab openings and trolley run institutions, should be installed interlock protection.

② For the loading bridge, located in the cab of the moving part of the channel at the mouth into the cab and trolley run institutions, shall be equipped with interlock protection.