| 摘要 |
Physical bar lifting system with controlled force, consisting of a general framework in which is mounted a movable base that can be accommodated to the user, linked by levers which form a deformable parallelogram to another set of levers, and a regulating rod, whose mechanical assembly receives the thrust of the piston of a pneumatic cylinder, which receives an injection of air from a reservoir, by means of a safety valve which closes the passage in event of a loss of pressure in the cylinder, the pneumatic system forming a motor- compressor, an electric valve for emptying the unit, a pressure transducer and control panel which regulates the injection of air so that the lifting movement of the movable platform occurs with a controlled push, corresponding to a percentage of the weight of the user, which can be varied from one hundred percent to a value of zero. <IMAGE>
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