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2. Level luffing crane - Wikipedia

   en.wikipedia.org/wiki/Level_luffing_crane

   The first of these systems used mechanical clutches between luffing and hoist drums, giving simplicity and a "near level" result. [ 5 ] Later systems have used modern electronic controls and quickly reversible motors with good slow-speed control to the hoist winch motors, so as to give a positioning accuracy of inches.

3. Active heave compensation - Wikipedia

   en.wikipedia.org/wiki/Active_heave_compensation

   [4] [5] Hydraulic "active boost" winches control the oil flow from the pump(s) to the winch so that the target position is reached. Hydraulic winch systems can use accumulators and passive heave compensation to form a semi-active system with both an active and a passive component. In such systems the active part will take over when the passive ...

4. Beartrap (hauldown device) - Wikipedia

   en.wikipedia.org/wiki/Beartrap_(hauldown_device)

   Constant tension is intentionally maintained on the cable via an automatically-adjusting hydraulic system connected with multiple high-sensitivity tension sensors, and a shock absorption system. [1] Fail-safes are incorporated into the device as well. When the LSO determines that a relatively quiet moment is approaching, they instruct the pilot ...

5. M1120 HEMTT Load Handling System - Wikipedia

   en.wikipedia.org/wiki/M1120_HEMTT_Load_Handling...

   A centrally mounted self-recovery winch is an option and this is fitted to around 20% of production. [1] The two-door forward control cab seats two. It is of heavy-duty welded steel construction with corrosion-resistant sheet metal skins. Add-on armor kits were produced by Simula Inc. and BAE Systems.

6. Tower crane anti-collision system - Wikipedia

   en.wikipedia.org/wiki/Tower_Crane_Anti-Collision...

   In the event that a collision becomes imminent, the system can send a command to the crane's control system, ordering it to slow down or stop. [1] An anti-collision system can describe an isolated system installed on an individual tower crane. It can also describe a site wide coordinated system, installed on many tower cranes in close proximity.

7. Winch - Wikipedia

   en.wikipedia.org/wiki/Winch

   [3] [4] The snubbing winch is used to pull vehicles out of mud, snow, sand, rocks, and water, and to pull vehicles through or over obstacles. The winch is made of cable made up of a braided synthetic rope, or a steel cable wrapped around a motorized drum. Each is controlled electronically, allowing the operator to control the winch speed. [5]