PURPOSE: To allow a main collector to face the sun without using electric power, by swinging the main collector via a transmitting mechanism by contraction of a configuration memory alloy wire due to solar heat.
CONSTITUTION: Of a plurality of sensing collectors 12, only the sensing collector 12a condenses rays at the focus so that the configuration memory alloy wire 13 arranged in the heat collecting part of the sensing collector 12 is heated. Then the configuration memory alloy wire 13 contracts into the shape of a coil so that a piston rod 15 of a first hydraulic actuator 14 is pulled. As a result, a rod side chamber 20 of a third hydraulic actuator 19 is supplied to push up a piston rod 23 of a second hydraulic actuator 19 to rotate a brake plate 22 against a spring 27, therefore a rotating frame 6 becomes swingable, and a piston rod 30 of the third hydraulic actuator 19 is pushed down to pull a crank shaft 32 so that the main collector 9 together with the rotating frame 6 is rotated in the direction of the sunlight.
COPYRIGHT: (C)1984,JPO&Japio