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　　For hook pulley sets, its magnification conversion is critical. So, how is its magnification converted? There are several main methods.

　　In the hook pulley set, there are usually two ways to convert its magnification, namely, two types of transformation magnifications of double trolleys and single trolleys. In the transformation magnification of a single car, artificial and automatic methods are used.

　　The structure and working principle are also different for different transformation methods.

　　The hook pulley set using a single car change ratio consists of the upper movable pulley and the lower double pulley hook set.

　　When the upper movable pulley is tightened to the trolley structure by its own locking device, the tower crane works at a rate of 2 using a double pulley hook set.

　　When the magnification changes from 2 to 4, the double pulley hook group is first raised to the nearest of the variable width trolley, and then the top movable pulley is connected to the double pulley hook group through the connecting pin.

　　The top movable pulley is disconnected from contact with the trolley, and the tower crane is able to operate at 4 times.

　　The hook pulley set uses a single car conversion magnification, which can also be achieved through disengagement and rated board.

　　In the hook pulley set, the speed magnification is mostly controlled in the cab. Its characteristic is its simple structure and high reliability.

　　At the same time, the hook pulley set is lighter and has good reliability.

　　For hook pulley sets, its magnification conversion is critical. So, how is its magnification converted? There are several main methods.

　　In the hook pulley set, there are usually two ways to convert its magnification, namely, two types of transformation magnifications of double trolleys and single trolleys. In the transformation magnification of a single car, artificial and automatic methods are used.

　　The structure and working principle are also different for different transformation methods.

　　The hook pulley set using a single car change ratio consists of the upper movable pulley and the lower double pulley hook set.

　　When the upper movable pulley is tightened to the trolley structure by its own locking device, the tower crane works at a rate of 2 using a double pulley hook set.

　　When the magnification changes from 2 to 4, the double pulley hook group is first raised to the nearest of the variable width trolley, and then the top movable pulley is connected to the double pulley hook group through the connecting pin.

　　The top movable pulley is disconnected from contact with the trolley, and the tower crane is able to operate at 4 times.

　　The hook pulley set uses a single car conversion magnification, which can also be achieved through disengagement and rated board.

　　In the hook pulley set, the speed magnification is mostly controlled in the cab. Its characteristic is its simple structure and high reliability.

　　At the same time, the hook pulley set is lighter and has good reliability.