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1.发明授权Driving system for driving flexible elongate members, such as chains or scraper-chain assemblies, in mineral mining installations and method of operating 失效用于在矿物开采设备和操作方法中驱动柔性细长构件（例如链条或刮板链组件）的驱动系统
公开(公告)号：US5513902A
公开(公告)日：1996-05-07
申请号：US243999
申请日：1994-05-18
CPC分类号： E21C35/04 , F16D48/066 , F16D48/08 , F16D2500/30406 , F16D2500/3065 , F16D2500/5104 , F16D2500/70406 , Y10T477/24
摘要： A drive system for driving a flexible elongate member such as a haulage chain for a mineral mining machine or scraper-chain assembly of a scraper-chain conveyor of a mineral mining installation employs main and auxiliary drive units each equipped with an electric asynchronous motor drivably connected through a gearing assembly to a sprocket around which the chain or scraper-chain assembly is entrained. The gearing assemblies each employ a multi-disc clutch which is subjected to variable loading pressure and slippage by means of a valve actuated by electrical signals provided by an electronic controller. Each clutch acts through gears on a ring gear of planetary gearing and the ring gear wheel is subjected to a controlled supportive torque. The electronic controller is designed to actuate the associated valves to adjust the clutches to balance loading on the motors of the units. During a start-up phase the controller functions to ensure the force transmitted to the chain or scraper-chain assembly slowly and progressively increases and sudden loading is avoided. In the event of overloading the controller causes the valves to actuate the clutches rapidly to allow the ring gears of the planetary gearings to rotate freely to disconnect the drive.
摘要翻译： 用于驱动柔性细长构件的驱动系统，例如用于矿物挖掘机的矿用挖掘机的运输链条或矿物开采装置的刮板链式输送机的刮板链组装，使用主和辅助驱动单元，每个驱动单元配备有可驱动连接的电动异步电动机 通过齿轮组件到链轮，链条或刮板链组件被夹带在链轮上。 齿轮组件均采用多片离合器，该多片离合器通过由电子控制器提供的电信号致动的阀经受可变负载压力和滑动。 每个离合器通过行星齿轮的齿圈上的齿轮作用，并且环形齿轮受到受控的支撑扭矩。 电子控制器被设计成致动关联的阀门以调节离合器以平衡装置的马达上的负载。 在启动阶段，控制器用于确保传递到链条或刮板链组件的力缓慢地逐渐增加，并避免突然加载。 在超载的情况下，控制器使阀门快速致动离合器，以允许行星齿轮的环形齿轮自由旋转以断开驱动器。
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公开(公告)号：US5641058A
公开(公告)日：1997-06-24
申请号：US422123
申请日：1995-04-11
CPC分类号： E21C29/145 , B65G23/44
摘要： The invention employs pressure and displacement sensors for the automatic monitoring and adjustment of the pre-tension of endless belts, in the form of chains or the like, which sensors determine the pressure in the cylinder space and the movement of the piston of the tensioning cylinder, and the measuring signals from which sensors are evaluated by an electronic evaluation and actuation unit. In this respect the evaluation and actuation unit calculates from the measuring signals the changes in pressure which occur over a predetermined partial stroke of the piston of the tensioning cylinder, wherein these changes in pressure reflect the state of tension of the chain belt. When the chain tension is incorrect, the evaluation and actuation unit can therefore control the tensioning cylinder so that the optimum chain tension is set automatically.
摘要翻译： 本发明采用压力和位移传感器，用于自动监测和调节链条等的环形带的预张力，传感器确定气缸空间中的压力和张紧缸的活塞的运动 以及由电子评估和致动单元评估传感器的测量信号。 在这方面，评估和致动单元根据测量信号计算在张紧缸的活塞的预定部分行程上发生的压力变化，其中这些压力变化反映链带的张力状态。 当链张力不正确时，评估和执行单元因此可以控制张紧缸，使得最佳链张力被自动设定。
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