Laser anti-collision device is a contactless crane travelling limiter.

激光防撞装置是一种无触点运行限位装置。

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The utility model relates to a mining device, in particular to a mine underground air door anti-collision device.

本实用新型涉及一种矿用装置，具体是一种矿井井下风门防撞装置。

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With special bearing, high sensitivity, nylon sealing device and anti collision device, which can effectively reduce the impact force and ensure the stability of the operation.

采用特制轴承，滚轮灵敏度高； 尼龙密封装置及防撞装置，有效减缓冲击力，确保运行的稳定。

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However, the device would have to be launched at least 15 years before any predicted collision and would need a team to monitor it from the ground during this time.

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For the first time you can now grab live collision events from the underground detectors in Geneva, and beam them direct to your own device.

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