| 摘要 |
An improved lifting and transportation device including an attachment means adapted to engage a wheeled device to be transported; and one or more driving wheels adapted to engage the ground to propel said lifting and a transportation device, whereby, said lifting and transportation device is steerable by the independent engagement of said driving wheels; and a controller adapted to control the motion of said driving wheels and control the operation of said attachment means. The attachment means may be an attachment assembly with laterally opposed attachment brackets adapted to engage said wheeled device, whereby, a vertical actuator is used to adjust the vertical height of said attachment assembly and a horizontal actuator is used to adjust the horizontal separation of said laterally opposed attachment brackets |
