标准号:IS 12101-1987
发布日期:1988/7/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.Specifies the dimensions and general requirements of roller type hold-back devices generally used in conveyors, elevators and similar equipments to arrest the backward movement in case of power failure or breakdown.1.1 These devices are generally used in the output shafts.