Method and device for adjusting length of multi-winding steel wire rope of crawler crane

The invention relates to a method and a device for adjusting the length of a multi-winding steel wire rope of a crawler crane. The method comprises the steps of: sending a lifting hook tilt angle reading command to a wireless receiver by a controller; establishing wireless communication connection between the wireless receiver and a wireless tilt angle sensor arranged on a lifting hook when the wireless receiver receives the lifting hook tilt angle reading command, and reading the lifting hook tilt angle information obtained by the wireless tilt angle sensor in real time; returning the lifting hook tilt angle information back to the controller by the wireless receiver; calculating the length difference of the steel wire rope in a winding room by the controller according to the lifting hook tilt angle information, the multiplying power of all windings in a multi-winding system and the length of a lifting hook connecting plate; sending a rotating speed regulation command to all the windings in the multi-winding system according to the length difference of the steel wire rope; and leveling the lifting hook by adjusting the movement speed of all the windings. The method and the device can be used for obtaining accurate length difference of the steel wire rope by measurement, thus accurately adjusting the length of the steel wire rope, conveniently and effectively eliminating the tilt angle of a lifting hook pulley block, and reducing the abrasion of the steel wire rope and the pulley block.