Crane and control method for slewing and traveling of a crane under no load while having a super-lift counterweight

A crane, comprising:

• a body, comprising a chassis and a turntable, the turntable being rotatably arranged on the chassis;
• a super-lift device, comprising a super-lift jib, a suspension pulling member, and a balancing mechanism, wherein the balancing mechanism comprises a super-lift counterweight and a pushing device, first ends of the super-lift jib and the pushing device are both connected to the turntable, the suspension pulling member is connected to a second end of the super-lift jib and the super-lift counterweight, and a second end of the pushing device is connected to the super-lift counterweight to adjust a distance between the super-lift counterweight and a slewing center of the turntable;
• a hovering device configured to support the super-lift counterweight above a ground when the crane is under no load, wherein a first end of the hovering device is connected to the turntable and a second end of the hovering device is not connected to the super-lift jib;
• a mast;
• and
• a super-lift pulling member,
• wherein a first end of the mast is connected to the turntable and a second end of the mast is connected to the super-lift jib by the super-lift pulling member,
• wherein the crane further comprises at least one of the following:
• a first detection device configured to detect forces on the suspension pulling member and the hovering device to determine a weight of the super-lift counterweight;
• or
• a second detection device configured to detect a force on the super-lift pulling member.