Abstract: Problem to be Solved The present invention is made in view of the above-described circumstances. An object of the present invention is to provide a sunlight collecting system achieving suppression of power generation cost with the receiver which enables suppressing the manufacturing, transportation and construction costs, facilitating recovery work in the case of occurrence of a failure, and promptly recovering a heating medium circulating inside the receiver in an emergency.

Abstract: The direction of a solar light tracking sensor is set easily with high accuracy. A solar light tracking guide (35) is installed on the optical axis (11) of the reflected light collected by a heliostat (2). An optical telescope (47) is so attached to the rear end part of the guide (35) as to be aligned with the guide axis (C) of the guide (35). The posture of the solar light tracking guide (35) is so adjusted that a cross provided in the field of view of the telescope (47) agrees with the center (10a) of the light collection target position and fixed to the base (38). Then, a solar light tracking sensor (12) is fastened to the rear end part of the guide (35) in place of the optical telescope (47).

Abstract: For work in which reflecting mirrors (or facets (31)) to be mounted on a heliostat 3 coincide with a pseudo toroid (53), an adjustment method of, and a mounting posture measuring device for, accurately measuring mounting postures of the respective facets (31) are provided for performing mounting adjustment efficiently and simply. In a method of installing the reflecting mirrors (or the facets (31)) constituting the heliostat 3 for sunlight condensation, each facet (31) is installed in such so that a reflected laser beam (52) reflected by the facet 31 can reach a virtual passage point (52b) in a laser point measuring unit (12).

Abstract: Problem to be Solved The present invention is made in view of the above-described circumstances. An object of the present invention is to provide a sunlight collecting system achieving suppression of power generation cost with the receiver which enables suppressing the manufacturing, transportation and construction costs, facilitating recovery work in the case of occurrence of a failure, and promptly recovering a heating medium circulating inside the receiver in an emergency.

Abstract: An object is to provide a solar ray lighting device which is capable of reducing the blocking and the shadowing of beams of light reflected by heliostats and which is capable of fixing firmly and stably a heavy and large-sized center reflector. In a beam-down type solar ray lighting device, at least three supporting blocks are assembled together to form a pyramidal shape. In addition, an outer circumferential edge of the center reflector is fixed to the supporting posts so that the outer circumferential edge of the center reflector can internally touch the supporting posts.

Abstract: For work in which reflecting mirrors (or facets (31)) to be mounted on a heliostat 3 coincide with a pseudo toroid (53), an adjustment method of, and a mounting posture measuring device for, accurately measuring mounting postures of the respective facets (31) are provided for performing mounting adjustment efficiently and simply. In a method of installing the reflecting mirrors (or the facets (31)) constituting the heliostat 3 for sunlight condensation, each facet (31) is installed in such so that a reflected laser beam (52) reflected by the facet 31 can reach a virtual passage point (52b) in a laser point measuring unit (12).

Abstract: Provided is a device for supporting a center reflector stably and firmly. The device improves the setting density of heliostats and is capable of reducing the blocking and the shadowing of the beams of light reflected by the heliostats. In a beam down system solar generation device, the center reflector is attached, in a cantilever manner, to a supporting post standing upright. A pylon is provided to stand on the top of the supporting post. A stay member is attached to the pylon and is used for fixing the center reflector. A second stay member is provided to support the supporting post. This second stay member connects: the pylon; a jut extending out from the back side of the supporting post; and a base.

Abstract: Provided are a method for controlling a heliostat used for collecting of sunlight and a device of the method that achieve: a high sunlight collecting efficiency with a high light collecting rate by allowing no deviation of a light collecting point (a focal point) of sunlight; and a high area arrangement efficiency by having such a configuration in which no rotation by means of a rotation mechanism is carried out. The method is a method for controlling a heliostat being used for collecting of sunlight and having multiple reflecting mirrors in a way that the heliostat tracks the sun in motion, reflects sunlight, and collects the sunlight at a predetermined focal point.

Abstract: Lower heat-collection efficiency and a much smaller amount of solar heat may result from the providing of only a single receiver on a supporting post to collect lights coming from both heliostats located at nearby positions and heliostats located at faraway positions. A solar heat power generation device to be provided by the invention can avoid such problems. The solar heat power generation device has the following characteristic features. The solar heat power generation device comprises: a supporting post 4 including a receiver 1 that receives sunlight; and a plurality of heliostats 6 which are provided concentrically around the supporting post 4 and which reflect the sunlight towards the receiver 1. The supporting post 4 includes at least two receivers 1a and 1b that are arranged in the up-and-down direction.

Abstract: An object is to provide a solar ray lighting device which is capable of reducing the blocking and the shadowing of beams of light reflected by heliostats and which is capable of fixing firmly and stably a heavy and large-sized center reflector. In a beam-down type solar ray lighting device, at least three supporting blocks are assembled together to form a pyramidal shape. In addition, an outer circumferential edge of the center reflector is fixed to the supporting posts so that the outer circumferential edge of the center reflector can internally touch the supporting posts.

Abstract: The direction of a solar light tracking sensor is set easily with high accuracy. A solar light tracking guide (35) is installed on the optical axis (11) of the reflected light collected by a heliostat (2). An optical telescope (47) is so attached to the rear end part of the guide (35) as to be aligned with the guide axis (C) of the guide (35). The posture of the solar light tracking guide (35) is so adjusted that a cross provided in the field of view of the telescope (47) agrees with the center (10a) of the light collection target position and fixed to the base (38). Then, a solar light tracking sensor (12) is fastened to the rear end part of the guide (35) in place of the optical telescope (47).

Abstract: In a shield machine, there are provided an electromagnetic wave transmitting and receiving unit mounted on the top of the shield machine for radiating electromagnetic impulse wave toward an underground and for receiving the electromagnetic wave reflected from the underground, and a position sensor for collecting an information regarding the position of the electromagnetic wave transmitter and receiver unit. Data processing unit is provided for processing the signals from transmitter/receiver and the position sensor and sent through a transmission line. The data processing unit continuously displays the condition of the underground at the cutting face.