DEVICE FOR SETTING LASER REFERENCE SURFACE Russian patent published in 2005 - IPC

FIELD: geodetic instrument engineering.

SUBSTANCE: device has reference member, cylindrical yoke, collimator, electric motor, pentaprism, unit for setting inclination of axis of rotation of pentaprism and vertical circle. Laser is placed into cylindrical yoke. Reference member has base and frame. Unit for setting inclination of axis of rotation of pentaprism is made in form of set of hinge parallelograms. System has two cranks with parallel units. Cranks are fastened to top plank of frame by means of shafts. Top plank of frame is made U-shaped. Cylindrical yoke is mounted in parallel to units of cranks. Optical center of pentaprism is disposed at extension of straight line to cross the points where cranks are fastened to frame. Two pairs of connecting rods are connected by hinges with cranks and cylindrical yoke. Sector gear is disposed onto shaft of axis of rotation of one crank. Worm is mounted onto base for interaction with sector connecting rod. Vertical circle is mounted onto axis of rotation of one crank.

EFFECT: simplified design; improved reliability; improved precision of results.

2 dwg