Patent ID: 8622402

Claim:
An automatic conveying device for conveying objects, comprising: a conveyer bracket comprising a bottom portion; a wheel assembly rotatably assembled to the bottom portion of the conveyer bracket to support the conveyer bracket; transmission mechanism assembled within the conveyer bracket and connected with the wheel assembly, thereby driving the wheel assembly to rotate; and a loading assembly mounted upon the conveyer bracket and movably assembled with the transmission mechanism, for accepting objects as a load and driving the transmission mechanism to work; wherein the loading assembly is capable of moving downward relative to the conveyer bracket under a weight of the objects placed on the loading assembly, and is capable of moving upward back to its original position when the objects are removed; wherein the conveyer bracket further comprises a top wall defining a mounting hole, the loading assembly comprises a loading plate and at least one elastic member elastically sandwiched between the loading plate and the top wall, such that the loading plate is elastically mounted upon the top wall; the transmission mechanism comprises a rack and a first transmission assembly, one end of the rack is fixed to the loading plate, and an opposite other end of the rack passes through the mounting hole and enters into the conveyer bracket; the first transmission assembly is assembled within the conveyer bracket and rotatably engages with the rack and the wheel assembly; wherein the first transmission assembly comprises a rotary shaft rotatably assembled within the conveyer bracket, a first transmission gear, and a second transmission gear, the first transmission gear and the second transmission gear are separately sleeved on the rotary shaft, the first transmission gear rotatably engages with the rack, and the second transmission gear engages with the wheel assembly; and wherein the transmission mechanism further comprises a second transmission assembly rotatably assembled within the conveyer bracket thereby connecting the first transmission assembly and the wheel assembly together; wherein the wheel assembly comprises a first pair of wheels, a second pair of wheels, a drive shaft, and a drive wheel coaxially sleeved on the drive shaft; the first pair of wheels are oppositely assembled to one end of the bottom portion of the conveyer bracket via the drive shaft, the second pair of wheels are rotatably assembled to another end of the bottom portion; the second transmission assembly comprises a transmission shaft, an engaging gear, and a belt wheel, the transmission shaft is rotatably assembled within the conveyer bracket and is substantially parallel and positioned between the rotary shaft and the drive shaft, the engaging gear and the belt wheel are separately sleeved on the transmission shaft, the engaging gear rotatably engages with the second transmission gear, and the transmission belt is sleeved on the belt wheel and the drive wheel.