Patent ID: 9723916
Date: 2017-08-08
CPC Classifications: A47B

Claim:
1. An electric lifting device, comprising a driving mechanism and at least two transmission mechanisms, the two transmission mechanisms cooperating with each other and being connected through a transmission bar assembly, wherein the transmission bar assembly is driven by the driving mechanism to rotate along an axis of the transmission bar assembly; each transmission mechanism comprises: a gearbox; at least one first driving gear, rotationally mounted inside the gearbox, and the first driving gear coaxial with and relatively fixed with a part of the transmission bar assembly stretching into the transmission mechanism; at least one second driving gear, mutually engaged with the first driving gear and rotationally mounted inside the gearbox, axes of the first driving gear and the second driving gear being crossed vertically; and at least one lifting table leg disposed below at least two of the transmission mechanisms, and each lifting table leg driven by the second driving gear of the corresponding transmission mechanism to be lifted synchronously,