Electrohydraulic solar panel carrier adjusting device

Details Electrohydraulic solar panel carrier adjusting device Electrohydraulic solar panel carrier adjusting device

2008-03-19

2010-12-14

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

C091S420000, C091S439000, C091S451000

Reexamination Certificate

active

07849687

ABSTRACT:
A solar panel carrier T is provided at a sub-structure U such that it can be rotated and tilted by means of hydrostatic rotation and tilt motors M, M′. In an electrohydraulic adjusting device for the solar panel carrier T a motor pump aggregate8is connected to the hydrostatic motors. Within working lines A, B of the tilt hydrostatic motor M at least one tilt control system K is provided, which comprises valve components and a pilot pressure circuit. The tilt control system K comprises pressure actuated blocking valves or load holding valves LHVA, LHVB. For automatically adjusting a protected position S of the carrier T a suction line N is provided at the side of the hydrostatic tilt motor facing to the blocking valves or load holding valves. The suction line N is surveyed by a monitoring solenoid18and is opened depending on initial pressure conditions in case of switching off the electric power and/or in case of an electric breakdown. In this fashion the protected position S of the carrier T can be adjusted without consuming primary energy by use of the weight load of the carrier T itself.

REFERENCES:
patent: 5415076 (1995-05-01), Krone et al.
patent: 5760695 (1998-06-01), Huber
patent: 7104181 (2006-09-01), Bitter et al.
patent: 10022236 (2001-11-01), None
patent: 0803630 (1997-10-01), None
patent: 07008707 (2007-10-01), None

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