Limit switch for fireproof door rolling machine

• Main Authors: YIN JUN, DONG GUIFU, DONG YUTAO
• Format: Patent
• Language: Chinese; English
• Published: 24.02.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

The utility model discloses a limit switch for a fireproof door rolling machine, which comprises a switch base, a fixing block is integrally and fixedly mounted above the switch base, a connecting bearing is mounted in the fixing block, a transmission rod is arranged in the connecting bearing in a penetrating manner, an adjusting knob is integrally and fixedly mounted on the left side of the transmission rod, and a limiting rod is mounted on the right side of the adjusting knob. A threaded part is arranged on the right side of the outer surface of the transmission rod; the limiting connection sliding groove is formed in the switch base, a limiting connection sliding block is installed in the limiting connection sliding groove, and a positioning pressing piece is integrally and fixedly installed above the limiting connection sliding block. According to the limit switch for the fireproof door rolling machine, the transmission rod is driven to rotate by rotating the adjusting knob, the positioning pressing piece