Lesson 19 Cargo handling equipment (货物装卸设备) 轮机英语教学课件.ppt

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Lesson 19
Cargo handling equipment
(货物装卸设备)
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The various items of machinery and equipment can be found outside of the machinery space.
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These include deck machinery such as mooring equipment(系缆设备), anchor handling equipment(抛锚设备), cargo handling equipment and hatch covers(舱口盖).
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Other items include lifeboats(救生艇) and liferafts(救生筏), emergency equipment, watertight doors, valve actuator, stabilizers(减摇装置) and bow thrusters(船头推进器).
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The cargo handling equipment will now be described.
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Cargo winches are used with various derrick(吊杆) systems arranged for cargo handling.
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The unit is rated according to the safe working load to be lifted and usually has a double speed provision(装置) when working at half load.
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In the cargo winch, spur reduction gearing transfers the motor drive to the barrel shaft.
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A warp end(卷绕端) may be fitted for operating the derrick topping lift (顶牵索) (the wire which adjusts the derrick height).
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Manually operated band brakes may be fitted and the drive motor will have a brake arranged to fail-safe(故障保护), . it will hold the load if power fails or the machine is stopped.