| 摘要 |
A trolley for traveling along a cable may include a frame having a first end, a second end, and a rail extending therebetween. A user may suspend from the frame in a harness, leveraging the user's weight about a fulcrum suspended by a sheave rolling along the cable. Opposite the user, across the fulcrum, a brake shoe or pad pivotably connected to the frame may be controlled by a user shifting weight, a trim brake adjustable by the user, or both to control a braking force generated by the trolley between the brake pad and the cable. Trim braking may be set to stop the trolley on any incline, roll with a constant braking bias, or roll freely. User-weight leveraging may be dynamically adjusted by a user likewise by selectively weighting a harness, weighting a handle and tether to draw the user's weight toward the fulcrum, or both.
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