Crane machine with rotatable arm

A crane machine with a rotatable arm, comprising:

• a main body, defining a holding cavity and a conveying channel;
• wherein the conveying channel comprises an opening that is in communication with the holding cavity;
• the rotatable arm, arranged in the holding cavity;
• wherein the rotatable arm is rotatably connected to the main body to be rotatable around a centerline in a vertical direction;
• a rotation drive assembly, comprising a first driving member configured to drive the rotatable arm to rotate around the centerline;
• an elevation drive assembly, arranged in the rotatable arm and comprising a second driving member and a rotation wheel;
• wherein the second driving member is configured to drive the rotation wheel to rotate;
• and
• a gripper, connected to the rotation wheel through a connection rope;
• wherein the rotation wheel is rotated to coil or uncoil the connection rope to lift or lower the gripper;
• the opening is disposed on a rotational radius of the gripper;
• wherein the elevation drive assembly further comprises a first rotation shaft;
• the rotation wheel comprises a first rotation wheel and a second rotation wheel;
• the first rotation wheel is fixedly connected to the first rotation shaft, and the second rotation wheel is movably connected to the first rotation shaft to be rotatable relative to the first rotation shaft;
• the crane machine further comprises a resilient member, the first rotation wheel is arranged with a first limiting portion, and the second rotation wheel is arranged with a second limiting portion;
• in a first state, the resilient member abuts against the second rotation wheel to limit the second rotation wheel from rotating with the first rotation wheel;
• in a second state, the first limiting portion abuts against the second limiting portion to make the first rotation wheel drive the second rotation wheel to rotate synchronously;
• the connection rope comprises a first rope body and a second rope body;
• two ends of the first rope body are connected to the gripper and the first rotation wheel, respectively;
• the first rotation wheel is configured to rotate to make the first rope body coiled on the first rotation wheel;
• the gripper is in an open state when the first rope body is in a slack state, and the gripper is in a closed state when the first rope body is in a taut state;
• two ends of the second rope body are connected to the gripper and the second rotation wheel, respectively;
• the second rotation wheel is configured to rotate to make the second rope body coiled on the second rotation wheel, for controlling a lifting of the gripper.

A crane machine with a rotatable arm, comprising:

• a main body, defining a holding cavity and a conveying channel;
• wherein the conveying channel comprises an opening that is in communication with the holding cavity;
• the rotatable arm, arranged in the holding cavity;
• wherein the rotatable arm is rotatably connected to the main body to be rotatable around a centerline in a vertical direction;
• a rotation drive assembly, comprising a first driving member configured to drive the rotatable arm to rotate around the centerline;
• an elevation drive assembly, arranged in the rotatable arm and comprising a second driving member, a gear train and a rotation wheel;
• and
• a gripper, connected to the rotation wheel through a connection rope;
• wherein the second driving member drives the gear train to rotate, the gear train drives the rotation wheel to rotate, and the rotation wheel is rotated to coil or uncoil the connection rope to lift or lower the gripper;
• an interior of the rotatable arm is hollow;
• and the second driving member, the gear train and the rotation wheel are all disposed in the interior of the rotatable arm.