| 摘要 |
The present invention relates to hoist transport systems, namely, to the devices for lifting loads and can be used to service the hard-to-reach areas, for lifting loads of different weight and personnel, in construction, solving problems of mounting large objects with delivery of structural elements to the desired height. An elevator is designed as a toggle parallelogram type mechanism. To ensure an optimal ratio of required drive force to the weight to be lifted and lowering energy costs for lifting there are introduced additional elements of initial lifting in the form of a rod with a roller, through which a rope passes. The elevator drive consists of the rope passing through the system of rollers and a mechanism of its tension. A feature of the mechanism is a system of levers that transmits the drive force of single drive on all the levers of parallelograms. The invention provides for maximum lifting height with limited dimensions of a base plate and folded state, use of single drive to lift the entire structure, as well as the optimal ratio of required effort of the drive for lifting the weight and reduction of power consumption for lifting. |
