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首页> 外文会议>IAS '95 >SPEED AND POSITION SENSORS FOR MINE HOISTS AND ELEVATORS
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SPEED AND POSITION SENSORS FOR MINE HOISTS AND ELEVATORS

机译：矿井提升机和提升机的速度和位置传感器

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摘要

Mine hoist and elevator safety devices are tested periodically. However, periodic testing cannot ensure that a recently tested safety device will function properly when called upon. Ideally, the condition of critical safety devices should be continuously monitored but this is either impractical or impossible. The U.S. Bureau of Mines is conducting research on the more practical approach of continuously monitoring the speed and position of the shaft conveyance. By monitoring the depth and speed of a conveyance and comparing the result with the appropriate speed curve, an operator can be warned before the curve is exceeded and may then take appropriate action. This information will also detect other hoisting malfunctions such as motor or brake problems. Monitoring the actual cage position during operation and comparing this with the position indicated by the winding drum will indirectly enable the detection of rope slip for friction hoists and slack rope in drum hoists.rnHoist systems presently in use are typically not equipped with appropriate devices for directly monitoring actual cage speed and position. Conventional overspeed protection for a mine elevator is currently done by a centrifugal governor. However, a mechanical governor is not capable of determining if the speed curve is changing with respect to the cage position in the hoisting cycle. Therefore, another means of sensing cage speed is needed.rnThis paper discusses several types of speed and position sensors, and advantages and disadvantages of each. The research suggests methods to monitor actual speed and position of the cage, which can be very significant in preventing overspeed accidents resulting from safety device failures in mine hoists and elevators.
机译：矿井提升机和电梯安全装置要定期进行测试。但是，定期测试不能确保在调用时最近测试过的安全设备将正常运行。理想情况下，应连续监视关键安全设备的状况，但这是不切实际或不可能的。美国矿业局正在研究一种更实用的方法，该方法可以连续监控竖井运输的速度和位置。通过监视运输工具的深度和速度并将结果与​​适当的速度曲线进行比较，可以在超出曲线之前警告操作员，然后可以采取适当的措施。此信息还将检测其他起重故障，例如电动机或制动器问题。在运行过程中监视实际的轿厢位置并将其与卷筒指示的位置进行比较，将间接实现对卷扬机中的摩擦葫芦和松弛绳索的滑移的检测。rn目前使用的葫芦系统通常没有配备用于直接举升的合适设备监视笼子的实际速度和位置。目前，矿用电梯的常规超速保护是由离心调速器完成的。但是，机械调速器无法确定速度曲线是否在提升循环中相对于轿厢位置发生变化。因此，需要另一种传感笼速度的方法。本文讨论了几种类型的速度和位置传感器，以及每种传感器的优缺点。该研究提出了监视轿厢实际速度和位置的方法，这对于防止由于矿井提升机和电梯的安全装置故障而导致的超速事故非常重要。

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  • 来源
    《IAS '95》|1995年|2054-2056|共3页
  • 会议地点 Orlando FL(US);Orlando FL(US);Orlando FL(US)
  • 作者

    PETER G. KOVALCHIK; FRANK T. DUDA;

  • 作者单位

    U.S. Bureau of Mines Pittsburgh Research Center P.O. Box 18070 Pittsburgh, PA 15236 USA;

    U.S. Bureau of Mines Pittsburgh Research Center P.O. Box 18070 Pittsburgh, PA 15236 USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程基础科学;
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