| 摘要 |
<p>A gravitational motive-force elevator for passengers or a load, which makes use of chains, servomotors and variable-load counterpoises, in which two variable-load counterpoises connected together by means of a compensating chain, connected to a servomotor via a planetary speed reducer, make it possible, via the relative position thereof with respect to the elevator car and to the fixed-mass counterpoise, first to equilibrate the weights of the two sides of the drive system and, second, by means of the programmed position of the compensation servomotor, to create an artificial disequilibrium that, when the servomotor brakes and over-running brake, if there is one, are released, results in the vertical, upward or downward sliding of the load, in a controlled manner, by means of the programming of a second traction servomotor that assists acceleration by applying very little energy and that controls deceleration in a programmed manner and stopping of the elevator in the precise location programmed. The novel elevator reduces or eliminates the need for traction energy in elevators and requires only control energy and a very small proportion for energizing the drive system.</p> |
