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1. (WO2018160796) SPRING COUNTER-BALANCE ASSEMBLIES AND SOLAR TRACKERS INCORPORATING SPRING COUNTER-BALANCE ASSEMBLIES

Pub. No.:    WO/2018/160796    International Application No.:    PCT/US2018/020386
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Fri Mar 02 00:59:59 CET 2018
IPC: G01S 3/78
F24J 2/54
F24J 2/38
F24J 2/46
F24J 2/52
H01L 31/05
H02S 20/30
Applicants: ARRAY TECHNOLOGIES, INC.
Inventors: CORIO, Ronald, P.
Title: SPRING COUNTER-BALANCE ASSEMBLIES AND SOLAR TRACKERS INCORPORATING SPRING COUNTER-BALANCE ASSEMBLIES
Abstract:
A solar tracker assembly is provided which includes a support column, a torque tube or torsion beam connected to the support column, a mounting mechanism attached to the torque tube or torsion beam, a drive system connected to the torque tube or torsion beam, and a spring counter¬ balance assembly connected to the torque tube or torsion beam. An exemplary spring counter¬ balance assembly comprises a bearing housing and a bushing disposed within the bearing housing and configured to be slideably mounted onto the torque tube or torsion beam, and one or more compressible cords made of a flexible material. The compressible cords are located between the bushing and the bearing housing and provide damping during rotational movement of the solar tracker assembly. An exemplary spring counter-balance assembly is provided including at least one top bracket and at least one bottom bracket, at least one spring, a damper, and a bracket. An exemplary spring counter-balance assembly comprises a bearing housing and a bushing disposed within the bearing housing and configured to be slideably mounted onto the torque tube or torsion beam. The spring counter-balance assembly may include at least one coil spring and a rotational stop. The bushing may be made of an elastomeric material and define one or more air spaces.