| 摘要 |
A capstan includes a frame, a reel for reeling a cable and a bolt for supporting the reel on the frame. The stress in the cable gets larger as the strain in the bolt gets larger. A driving device is operable to rotate the reel on the bolt. A strain gauge is attached to the bolt for measuring the strain in the bolt. A control box calculates the stress in the cable based on the strain in the bolt. A display shows the stress in the cable under the control of the control box.
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