The invention discloses a power-off protection system for loosening of foundation bolts of hoisting equipment, and relates to the technical field of power supply control of the hoisting equipment. The power-off protection system comprises bolt gaskets, a hole is formed in each bolt gasket, and an automatic reset push switch is arranged in each hole; when the foundation bolts are loosened or fractured, the push switches can automatically reset; the push switches are connected with and control an alternating current contactor with 24V coil voltage; a control electric box is additionally arranged on a power supply line of the hoisting equipment, a transformer is arranged in the control electric box, and the transformer is used for transforming 380V voltage into 24V voltage for control; a power supply inlet wire of the hoisting equipment is connected to a wire inlet end of the alternating current contactor, and a wire outlet end of the alternating current contactor supplies power to the hoisting equipment; and the bolt gaskets are arranged on the foundation bolts respectively, and a control line is connected with the push switches on the bolt gaskets in series. By means of the power-off protection system, the power supply of the hoisting equipment can be cut off in time after the foundation bolts of the hoisting equipment are loosened, and the operation of the equipment is stopped, so that the probability of collapse accidents of the hoisting equipment is reduced.
本发明公开了一种起重设备基础螺栓松动的断电保护系统,涉及起重设备电源控制技术领域,包括螺栓垫片,在螺栓垫片上开设有一孔,孔内设有一自动复位的按压开关;当基础螺栓松动或断裂后按压开关会自动复位;按压开关连接控制有一24V线圈电压的交流接触器;在起重设备的电源线路上加装一个控制电箱,控制电箱内设有一变压器,变压器用于将380V电压变压为24V控制;起重设备的电源进线接入交流接触器的进线端,由交流接触器的出线端将电源供给起重设备;螺栓垫片设置在每个基础螺栓上,控制线串联每个螺栓垫片上的按压开关。本发明能够对起重设备基础螺栓出现松动以后及时切断设备电源,停止设备的运行,进而降低了起重设备倒塌事故发生的概率。
Power-off protection system for loosening of foundation bolts of hoisting equipment
一种起重设备基础螺栓松动的断电保护系统
2022-01-14
Patent
Electronic Resource
Chinese
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