The invention discloses a potential-energy crane. According to the potential-energy crane, a technical scheme of automatic balance of a counter weight and a hoisted object is adopted. An object collecting device is connected with a driving device through a hoisting rope after passing through a fixed pulley (transmission wheel) at the hoisting end. A transmission wheel shaft is connected with an output shaft of a counter weight transmission device. A pulley of an input shaft of the counter weight transmission device is connected with the counter weight through a steel wire rope. When the hoisted object needs to be hoisted, the counter weight transmission device is controlled, so that the transmission ratio is adjusted to become larger gradually from zero, the hoisted object starts to be hoisted when the transmission ratio reaches a certain degree, adjustment is stopped automatically, the driving device is operated to provide pulling force to make the hoisted object be hoisted at an accelerated mode to a required height, and later operation is conducted according to operation procedures of an existing known crane; when the hoisted object needs to be descended, the counter weight transmission device is controlled, so that the transmission ratio is adjusted to become smaller gradually, adjustment is stopped till the descending speed of the hoisted object reaches a required value, and the driving device is operated to provide pulling force to control the descending speed. According to the potential-energy crane, acting for hoisting the hoisted object is not needed within a certain range, and electricity is saved.


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    Title :

    Potential-energy crane


    Contributors:

    Publication date :

    2015-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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