| 摘要 |
Independent movable rotating panel for the practice of recreational climbing. Through the use of two bases or supporting pieces a shaft connected to a gearwheel is located at the geometrical centre of a central piece and this is actuated by a hydraulic or pneumatic piston connected to an operating control unit, the inner faces of the bases supporting a guide rail or rail to which there is hooked a piece provided with a double bearing for both sides of the rail, which has safety stops, the two sides of the supported panel of different shape being also capable of providing an endless belt supported by two shafts. <IMAGE>
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