TELESCOPIC MAST TYPE EXTENSION DEVICE

摘要

The invention relates to a telescopic mast-type extension device which is an electromechanical assembly able to lift and fasten in a precise and repetitive position a load with a weight of maximum 100 kg from a minimal height L=300 mm up to a maximal height L= () x L, the electromechanically driven device comprises a number of "n" sections which coaxially rise from one another and it is used for positioning and supporting optoelectrical distance measuring apparatus such as laser or optical telemeters, navigation systems such as goniometers or GPS devices, for positioning and supporting video apparatuses, antennas and other equipments for height interventions. The claimed device comprises several elements: a. the base plate () made up of steel which ensures a firm fastening of the entire device, b. the driving assembly () is provided with a handle for manual actuation and for electrical actuation it is provided with a DC motor () of 24 V which develops a power of 600 W and a maximal consumption of 20 A and a double-reduction belt gear assembly, c. the external guiding system () consists of 5 concentric cylinders which slide into one another and which are guided by means of some internal and external bushes (), respectively, d. the mechanical lifting system comprises a main screw () which by rotation rises and descends the internally threaded cylindrical sections () which make a multiple helical couple, the sections () being guided by internal and external guiding bushes () which ensure the concentricity of threads during the extension thereof, e. the last section is provided with a platform interface () which plays the role of fastening and positioning the equipment to be lifted and supported.