A transportation apparatus configured to dock with a device to which power is supplied is provided. The transportation apparatus includes a first contact element for establishing a first contact with the device and a second contact element for establishing a second contact with the device. An apparatus for assisting in establishing the contact between the second contact element and the device is further provided in the transportation apparatus. The apparatus is operated by a motor. The apparatus is configured to provide power to the motor by supplying power via the first contact.