Abstract: A storage box includes an outer cylinder and a frame. The outer cylinder has a sidewall with an opening. The frame is disposed inside the outer cylinder, and has a rotatable connection with the outer cylinder. A space between a surface of the frame and the sidewall of the cylinder forms a storage member. As the frame rotates relative to the outer cylinder, the opening and the storage member alternates between a first relative position and a second relative position.

Abstract: A remote controller includes a remote controller main body, a remote-control lever assembly, and a clamp assembly. The remote controller main body is formed with storage slots corresponding to the remote-control lever assembly. The remote-control lever assembly is detachably connected to the remote controller main body. When detached from the remote controller main body, the remote-control lever assembly is configured to be stored in the storage slots. The clamp assembly is movably connected to the remote controller main body and is capable of unfolding or folding from the remote controller main body. When being folded, the clamp assembly is configured to cover the remote-control lever assembly stored in the storage slots.

Abstract: A wagon and a car body assembly thereof are provided. The car body assembly includes at least two bogies, an underframe and a car body both supported on the two bogies, the car body includes a middle car body, and a discharge opening of the middle car body is arranged between the two bogies, and at least one end of the middle car body is further provided with an end car body, and a predetermined space is defined above the respective bogie by adjacent end walls of the middle car body and the end car body.

Abstract: A remote controller includes a remote controller main body, a remote-control lever assembly, and a clamp assembly. The remote controller main body is formed with storage slots corresponding to the remote-control lever assembly. The remote-control lever assembly is detachably connected to the remote controller main body. When detached from the remote controller main body, the remote-control lever assembly is configured to be stored in the storage slots. The clamp assembly is movably connected to the remote controller main body and is capable of unfolding or folding from the remote controller main body. When being folded, the clamp assembly is configured to cover the remote-control lever assembly stored in the storage slots.