Tipping-bucket rain gauge with dual-steady state turning-board mechanism

Abstract

The invention provides a tipping-bucket rain gauge with a dual-steady state turning-board mechanism, and relates to a hydrological instrument. The tipping-bucket rain gauge comprises a rain-holding opening component, a drainage funnel, a tipping-bucket, a bracket, a tilt angle adjusting device, a level adjusting device and the like. The tipping-bucket rain gauge is characterized in that: the dual-steady state turning-board is arranged above a fixed water diversion plate; the dual-steady state turning-board is formed by connecting a left clipping plate, a right clipping plate and a moving water diversion plate, wherein the lower end of the moving water diversion plate is provided with a water diversion plate shaft which is supported by the dual-steady state turning-board and connected to the upper end of the fixed water diversion plate; two sides of the dual-steady state turning-board are provided with left and right limitation rods which are fixed on the bracket respectively; and the center of gravity of the dual-steady state turning-board is above the shaft center lines of the water diversion plates, and a tension spring is arranged between the moving water diversion plate and the fixed water diversion plate. The automatic turning-board mechanism can automatically change the water-turning delay angle of the turning-board, shorten the rainfall switch delay time of the water-holding bucket, reduce the measurement error of the turning-board and further improve the measurement accuracy of the instrument.

Description

technical field [0001] The invention relates to a hydrological instrument, in particular to a high-precision tipping bucket rain gauge with a bistable flap mechanism. Background technique [0002] The structure and technical requirements of the known tipping bucket rain gauge are known from the national standard GB / T11832-2002 "Tipping Bucket Rain Gauge". Leveling device, reed switch, drain funnel, base, outer cylinder, etc. Wherein the tipping bucket includes a left bucket, a right bucket, a fixed water diversion plate, a bucket shaft, two permanent magnets, and a counterweight column. The width of the tipping bucket is about 15-40mm. The drain funnel is installed vertically at the center of the top of the bracket, and its center line coincides with the vertical axis of the tipping bucket. The height between the water outlet and the tipping bucket axis is about 40-60mm. , the height between the top of the fixed water dividing plate and the outlet of the drain funnel is no...

AI Technical Summary

Problems solved by technology

[0010] From the above analysis, it can be concluded that the tipping bucket of the known technology tipping bucket rain gauge must first cross the tipping delay angle ω during the tipping process. y Recrossing the overturning angle ω d The task of switching the precipitation between the water receiving buckets can only be completed after the water receiving bucket, so a large measurement error is generated, which is a defect that the known technology cannot overcome

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