Dynamic water pressure generator capable of regulating frequency and pressure

Abstract

The invention belongs to the technical field of road engineering bituminous pavement water damage, and relates to an instrument for researching the anti-scouring capability of a material under the dynamic water pressure effect. The instrument is characterized in that a motor, the lower part of a slide way and a water cylinder are fixed on a test table; the upper part of the slide way is provided with a slide block; the slide block moves horizontally and straightly on the slide way; a motor rotary shaft and a cam wheel as well as the cam wheel and a crankshaft are connected by adopting an articulated mode; the left end of the slide block is connected with the crankshaft in an articulated mode, and the right end of the slide block is fixedly connected with a piston rod by a bolt, so that the piston rod moves horizontally and straightly; the piston rod and the water cylinder are connected by adopting a linear bearing; the water cylinder is internally filled with water; the lower part of the water cylinder is connected with a pressure transmitter for measuring the size of the water pressure; the upper part of the water cylinder is connected with a guide pipe; water in the water cylinder flows out of a scouring test element along the guide pipe under the effect of the dynamic water pressure effect. The beneficial effects of the instrument provided by the invention are that the instrument can simulate the applying and removing of load of a road material during the vehicle driving process as well as the scouring to the test element by water under the dynamic water pressure effect, and can reflect the mechanical damage situation of the road material under the combined action of load and water objectively.

Description

technical field [0001] The invention belongs to the technical field of water damage on asphalt pavement of road engineering, and relates to an instrument for studying the anti-scouring ability of materials under the action of dynamic water pressure, in particular to a frequency-adjustable and pressure-adjustable dynamic water pressure generator. Background technique [0002] At present, in order to study and evaluate the anti-erosion ability of materials, road workers from all over the world have done a lot of useful work for the development of test instruments for material erosion, and the most representative ones are road workers in France and Australia. French road authorities use rotating brushes or vibrating tables to study the erosion resistance of materials, but the steel brush method does not involve water and cannot simulate the actual erosion conditions of pavement base materials, which has obvious limitations. Australia uses a vibrating table to carry out the scou...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a frequency-adjustable and pressure-adjustable dynamic water pressure generator to solve the technical problem that the water pressure and frequency cannot be adjusted in the scouring test

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