Patent ID: 9337371
Filing Date: 2016-05-10
CPC Classification: F16H,F24S,H01L,H02S,Y02E

Claim Text:
1. A sun-tracking device, comprising: a photovoltaic component; a support mechanism that holds the photovoltaic component; and an azimuth driving device affixed to the support mechanism and adjusts the azimuth, wherein the azimuth driving device is a cam turntable, the cam turntable comprises a shell, a driving device affixed to the shell, a power output axis attached to the cam and driven by the driving device, and a control device disposed on the power output axis, wherein the driving device further comprises a driving electric motor disposed on the shell, a driving screw connected to the power output end of the driving electric motor, and a driving worm affixed to the power output axis and meshed with the driving screw, wherein the control device further comprises a control electric motor disposed on the shell, a control screw connected to the power output end of the control electric motor, a control worm installed on the power output axis through a sliding sleeve and meshed with the control screw, and a friction device surface-touching the cam, wherein the control worm and the driving worm are separated by a sleeve disposed on the power output axis, wherein the friction device further comprises a friction body affixed to the shell and surface-touching the cam, and a friction plate disposed between the cam and the friction body, wherein the cam has a depression on its surface and the friction plate engages the depression surface, wherein the cam turntable further comprises a tampered roller bearing disposed between the power output axis and the friction body, and an end cover in proximity with a second end of the power output axis located inside the shell, and an axis sealing ring disposed between the power output axis and the friction body, wherein the axis sealing ring seals the tampered roller bearing.