5, transmission: mechanical automatic off-hook drive device. The production standard of sprocket is made according to GB1135-89 and GB1244-84 standards, and the surface is blackened and rust-proofed.
6. The transmission system adopts special chain and double-arranged adjustable heart rolling bearing. The Japanese standard gate valve rolling wheel adopts high-strength cast iron material, and the transmission mechanism is flexible, stable, powerful and powerful.
7. Each column of the cabinet structure is equipped with a brake device to ensure the personal safety of the personnel.
8. Use first grade cold rolled steel plate. A strong magnetic rubber sealing strip is arranged between each column frame, a dustproof plate is arranged on the top, and a rod-proof device is arranged at the bottom, and there is no seam after the whole close, which can meet the requirements of dustproof, anti-rat, anti-theft and anti-light.