Universal joint signal generator for hydrographic survey equipment

Abstract

The invention discloses a universal joint signal generator for hydrological survey equipment. The universal joint signal generator comprises a universal joint upper seat and a universal joint lower seat, a shaft core is arranged in the universal joint upper seat; an upper seat shell is arranged outside the shaft core; the shaft core and the upper seat shell are separated by a bearing; the top of the shaft core extends out of the upper seat shell and is connected with a cableway steel wire rope through a connecting clamp a; a lower connecting shaft is arranged in the universal joint lower seat,a lower seat shell is arranged outside the lower connecting shaft, the lower connecting shaft and the lower seat shell are separated through an insulating sleeve, a positioning sleeve and an adjusting spring are arranged in the insulating sleeve, the lower connecting shaft penetrates through the lower seat shell, the two ends of the lower connecting shaft extend out of the lower seat shell, and the bottom of the lower connecting shaft is connected with hydrological survey equipment through a connecting clamp b. As the shaft core is the movable shaft, the upper seat shell is the static shaft and is separated through the bearing, torsion of the steel wire rope is eliminated, the lower connecting shaft serves as a switch positive electrode, the lower seat shell serves as a switch negative electrode, the adjusting spring adjusts starting tension of the switch, and signals are sent out after equipment touches the bottom.

Description

technical field [0001] The invention relates to the technical field of hydrological measurement, in particular to a universal joint signal generator used for hydrological measurement equipment. Background technique [0002] In the hydrological measurement of natural rivers, many measurement parameters need to be measured by hoisting the measurement equipment into the water with a river-crossing cableway or a survey ship cable car. Due to the turbulent water flow of natural rivers during the flood season, the topography of the river bottom is changing all the time. It is very large. If the underwater equipment does not send out an alarm signal after touching the bottom of the river at this time, the underwater equipment is likely to be opened in the crevice of the rock and cannot be recovered, or the underwater equipment will be damaged, or the equipment will be damaged by falling into the silt, so it is natural The bottoming signal generator must be used for river inflow hy...

AI Technical Summary

Problems solved by technology

[0003] However, solving these problems in underwater applications is much more difficult than in the air. Sealing insulation, underwater pressure, impact, and sand impacts make the commonly used various contact or non-contact alarm signal generators unable to operate underwater. It can be used directly, and it can't solve the problem that the wire torque rotates the underwater measuring equipment or deviates from the direction of the water flow.

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