Bayonet lock is designed for installation in front of the feeder for the purpose of raw coal layer retention in the hopper during the repair works execution in pulverized-coal system. Bayonet lock represents the welded metal construction consisting of a frame, carriages and hydraulic drive. Bayonet lock frame represents the metal construction welded of channels. The carriages equipped with bayonets blocking the lock passage section, move on the support idlers along the frame guide ways.

Setting in motion of each carriage is performed by the hydraulic cylinders. Final position of the carriage is checked by the end switches. Hydraulic drive system consists of: pumping unit, hydraulic cylinders and connecting pipe-lines. Pumping unit, feeding the lubricant in hydraulic system, consists of tank, pump set, hydraulics and pressure control devices. When all the hydraulic distributors are switched on, combined operation of hydraulic cylinders occurs.

Upon the Customer request the enterprise can manufacture the bayonet locks of any standard size.