Five-prevention interlocking mechanism

The invention relates to a five-prevention interlocking mechanism, which comprises a lower door ground interlocking unit and a load isolation and ground isolation interlocking unit. The lower door ground interlocking unit consists of a door hanging arm plate, a lower door interlocking connection pull rod, an interlocking connector, a crank arm and a lower door interlocking shaft shaft, wherein the door hanging arm plate is connected with the lower end of the lower door interlocking connection pull rod, the upper end of the lower door interlocking connection pull rod is connected with the interlocking connector, the interlocking connector is connected with one end of the crank arm and the other end of the crank arm is connected with the lower door interlocking half shaft. A ground baffle which is arranged in the front of a ground operating shaft is locked or unlocked under the situation that a lower door is not hung or hung on the door hanging arm plate to control the opening/closing of a ground switch and the opened/locked state of the lower door. The load isolation and ground isolation interlocking unit consists of an isolation indicating wheel, a ground indicating wheel, a cam and a camshaft. After an isolating switch and the ground switch are closed, the ground baffle and an isolating baffle are respectively locked in the front of the ground operating shaft and an isolation operating shaft to prevent the ground switch and the isolating switch from being mistakenly operated. The five-prevention interlocking mechanism has the advantages of small size, convenience in installation, simplicity and convenience in operation and high safety and reliability.