| 摘要 |
A fixation system which can be automatically engaged or disengaged from a remote control room as well as from a local at each fixation unit. The fixation system that uses a toothed chord chock which is vertically movable to match the elevation of the leg chord rack teeth and horizontally movable to engage the teeth of leg chord. The toothed chord chock has upper and lower inclined surfaces. A fixation system which includes an upper and lower wedge which rides on upper and lower fixed inclined surfaces. The upper and lower wedges can be moved to engage the upper and lower inclined surfaces of the tooth chock.
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