Buoy releasing device for hydrological monitoring

The utility model discloses a hydrological monitoring buoy throwing device which comprises a bottom plate, a support is fixedly installed on the surface of the top end of the bottom plate, an installation frame is fixedly installed on the surface of the top end of the support, sliding grooves are formed in the two sides of the interior of the installation frame, an electric telescopic rod is fixedly installed on the surface of the inner side of the installation frame, and a sliding part is arranged between the sliding grooves in a sliding mode. The sliding component comprises two sliding blocks, a moving block and a connecting plate. Through the arrangement of the electric telescopic rod, the moving block, the sliding block and the sliding groove, the electric telescopic rod drives the moving block to move left and right in the sliding groove, meanwhile, the stability of the moving block during moving can be improved through cooperation of the sliding block and the sliding groove, and meanwhile through cooper