Project
AS7100-12 ZW 2/2-1 L4
A stationary hoist is required for a cooling tower with a 96 m lifting height and 20,000 kg capacity. The AS70 hoist design is ideal for this project, featuring a robust frame that enables coupling two hoists using anti-rotation steel cable with an integrated hook block and equalizing pulley. The availability of different motors and lifting speeds allows perfect adaptation to project specifications.
We exceed customer expectations in reliability and operational speed, critical since maintenance shutdowns for turbines and motors must be kept to an absolute minimum.
For projects like these, we supply equipment with lifting heights reaching 200 m in multiple load capacities.

20,000 kg and 96 m lift height at 17 m/min
Design
Two synchronized AS 7100-12 hoists achieve a 96 m lifting height. Their dual '12/2H73' motors, totaling 2 x 29 kW, deliver speeds of 2/17 m/min. Substantial power reserves enable lifting the full load in a single operation. The design incorporates a dual ratchet brake system that detects overspeed conditions and engages to stop the load smoothly and safely. These brakes also secure the drums when the equipment is idle. Additionally, the hoists feature manual brake release capability for safe load lowering during power outages.
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Ratchet Brake
The project required a secondary brake to ensure that the rollers of the mills could be suspended indefinitely for access to the interior of the machinery. We included a ratchet brake mounted on the drum, which is ideal for the application.
The pawl mechanically engages, keeping the drum locked. It will only release the brake through an electromagnetic actuator.