Patent ID: 9222773
Filing Date: 2015-12-29
Classification: G01C

Abstract:
1. A rotating construction laser device with a grade mechanism, comprising: a lens barrel in which a laser optical system is disposed; a frame structure that is fixed to, integrated into or directly provided by a part of the structure of the lens barrel; a grade arm, which is tiltably supported on the frame structure in an XZ-plane, the XZ-plane having an X-axis and a Z-axis, the Z-axis being an optical axis of the laser optical system and the X-axis lying within a plane perpendicular to the Z-axis; a tilt sensor which is provided at the grade arm and is configured to detect a level position of the grade arm; a tilting mechanism, which is provided on the frame structure and is designed to tilt the grade arm relative to the XZ-plane; a code element for providing a feedback position information and a position detection device for detecting the feedback position information; and a leveling mechanism, which supports the lens barrel tiltably and is designed to tilt the lens barrel in order to have the level position detected by the tilt sensor and therewith to level the grade arm, wherein: the code element or the position detection device is arranged directly on the grade arm, and the feedback position information directly depends on the position of a reference point on the grade arm, the reference point being defined by the code element or the position detection device, respectively, thus allowing to: