The invention provides a crane main beam connecting rod lifting device. The crane main beam connecting rod lifting device comprises a base, a bracket, a lead screw, a power driving mechanism, a firstupper connecting rod, a first lower connecting rod, a second upper connecting rod, a second lower connecting rod, a third upper connecting rod and a third lower connecting rod. The bottom end of the first upper connecting rod is hinged to the top end of the first lower connecting rod, and the lead screw straightly moves left and right under the action of the power driving mechanism. The bottom endof the second upper connecting rod and the top end of the second lower connecting rod are hinged to the lead screw at the same time, and the bottom end of the third upper connecting rod and the top end of the third lower connecting rod are hinged to the lead screw at the same time. A parallelogram mechanism is formed by the base, the second lower connecting rod, the third lower connecting rod andthe lead screw, and a parallelogram mechanism is formed by the bracket, the second upper connecting rod, the third upper connecting rod and the lead screw. The crane main beam connecting rod liftingmechanism has the advantages that the connecting rods are hinged, the connecting rods and the other components are hinged, tooth structure do not need to be machined on the connecting rods, and machining and manufacturing are convenient; and meanwhile the problem that the tooth structures are adopted for keeping the synchronization action of the connecting rods, and consequently the use effect ispoor is avoided.

    本发明提供了一种起重机主梁连杆举升装置,包括:底座、托架、丝杆、动力驱动机构、第一上连杆、第一下连杆、第二上连杆、第二下连杆、第三上连杆、第三下连杆;第一上连杆底端与第一下连杆顶端铰接,丝杆在动力驱动机构的作用力下左右直动,第二上连杆底端、第二下连杆顶端同时铰接在丝杆上,第三上连杆底端、第三下连杆顶端同时铰接在丝杆上,底座、第二下连杆、第三下连杆与丝杆构成平行四边形机构,托架、第二上连杆、第三上连杆与丝杆构成平行四边形机构。有益效果:连杆与连杆之间、连杆与其他部件之间均为铰接关系,不需要在连杆上加工齿结构,方便加工制造,同时也规避了采用齿结构保持连杆同步动作而造成的使用效果差的问题。


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    Title :

    Crane main beam connecting rod lifting device


    Additional title:

    一种起重机主梁连杆举升装置


    Contributors:
    SHAO DONGLIANG (author) / MA WENBO (author) / FENG SHULI (author) / HUANG XIAOLIN (author) / JI HONGYUN (author) / ZHENG PEI (author) / CHEN GANG (author) / HU SHENGCHAO (author) / SHEN QIANG (author)

    Publication date :

    2020-05-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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