| 摘要 |
A tension overload indicator includes a housing having a cavity extending along a longitudinal axis between oppositely disposed co-axial first and second apertures for journalling therethrough of a portion of a flexible load-bearing member. The housing has a third aperture having a bore axis orthogonal to the longitudinal axis. A rigid elongate member is slidably journalled in the third aperture between a recessed position wherein a visual warning signal on a distal end of the elongate member is recessed within the housing and a translated position wherein the warning signal is exposed from the housing. The elongate member extends into the cavity in the recessed position and is releasably locked in the recessed position by a shear member. The flexible load-bearing member is deflected out of co-axial alignment with the longitudinal axis by bending around the inner end of the elongate member. When a tension load in the flexible load-bearing member exceeds a safe load of the flexible load-bearing member corresponding to a shear strength of the elongate member, the flexible load-bearing member straightens in the cavity into alignment with the longitudinal axis so as to urge the elongate member into the translated position, thereby shearing the shear member.
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