Permanent tension atmospheric pressure compensated equipment

The utility model discloses a permanent tension atmospheric pressure compensated equipment, including fixing pneumatic cylinder, increasing gear and the sealed box on the wire pole, the output of pneumatic cylinder is connected with the piston rod, the internal rack that is equipped with of seal box, it is internal that the piston rod extends to the seal box to it is fixed with the rack, be equipped with outside gear on increasing gear's the output, outside wheel and rack meshing sets up, increasing gear's input is connected with the sheave, the winding has wire rope on the sheave, increasing gear comprises speed increase unit and gearbox, speed increase unit's output links to each other with the gearbox, the sheave sets up on speed increase unit's input, outside gear setting is on the output of gearbox. Its simple structure, convenient to use, easy operation, installation and dismantle conveniently, the cost of manufacture is low, and the size is little, the stable performance, later maintenance is convenien