The principle of determining the wheelbase of gantry crane

       Make cranes that change their radius when working out. In order to reduce the power of the motor for undulation, most of its weight out of the arm is compensated by a special balance weight. Crane balance weights are suspended on one or two steel cables. The cable is fixed on the extension arm and passes through a guide wheel fixed to the back end of the machine chamber so that the balance weight can move up and down. The balance weight is fixed on the two angled levers, and the angled levers are connected with the extension arm by a pull rod. When deciding on the size of the balance weight, it should be noted that there is a change in the effective torque that occurs.

       When using a balanced weight, a balanced weight moment should be added and substituted with a negative value. When calculating the power of a motor, the total pulling force of the screw should be the standard for the fully extended reach of the full load arm.

The principle of the gantry crane wheelset of Shandong Qi Lide Heavy Industry Group is as follows:

       (a) It can meet the stability requirements of the gantry in the direction of the crane track;

       (b) The size of the cargo must be able to pass through the leg flat steel frame smoothly;

       (c) Pay attention to make the distance between track B and span S in a certain proportion, generally take the track distance B = (1/4 - 1/6)S.