Indoor wheel rutting instrument

Abstract

The invention discloses an indoor wheel rutting instrument. The indoor wheel rutting instrument comprises a horizontal test bench, a rolling support device arranged on the horizontal test bench, a horizontal sliding component which is used for mounting a test piece and can drive the test piece to move back and forth on the rolling support device, a test wheel holder with adjustable supporting height, a test wheel of which the bottom is supported on the test piece, and a drive motor for driving the test wheel to rotate. The horizontal sliding component is placed on the rolling support device; the test wheel holder is provided with a wheel frame for mounting the wheel shaft of the test wheel; the power output shaft of the drive motor and the wheel shaft are in transmission connection through a transmission mechanism; and the test wheel holder is provided with a loading device for applying vertical load on the test wheel from top to bottom. The indoor wheel rutting instrument is rational in structure design, compact in installation, simple and easy to control, excellent in using effects, capable of simulating the real running state of the vehicle driving wheels, and capable of effectively solving the practical problem that the existing wheel rutting instrument can only simulate the running state of the vehicle driven wheels when the test wheel is driven to run by a crank connecting link.

Description

technical field [0001] The invention belongs to the technical field of wheel rutting test, in particular to an indoor rutting instrument. Background technique [0002] Rutting is a unique failure form of asphalt concrete pavement. It is a permanent deformation produced under the combined action of repeated driving loads and climate (high temperature) and other factors. , In severe cases, there will be protrusion deformation on both sides of the rut, which will worsen the performance of the road surface. Wheel track test is an engineering test method that simulates the actual wheel load on the road to form ruts. In a broad sense, indoor small wheel track reciprocating test, rotating wheel track test, large-scale loop test and straight track test can all be regarded as It is the category of wheel track test. Tracking test is an effective method to evaluate the ability of asphalt mixture to resist plastic flow deformation at specified temperature. The dynamic stability of th...

AI Technical Summary

Problems solved by technology

Moreover, it is recognized at home and abroad that the rutting is mainly shear deformation rather than compaction deformation. In terms of the force mode of the rutting instrument currently used in my country, the test piece bears mainly compressive stress during the test process, and the corresponding deformation is mainly It is compaction deformation. This is because the test wheel is driven by the crank connecting rod, which can only simulate the non-driving wheel of the vehicle, while the driving wheel has a greater shearing effect on the road surface during the actual driving of the vehicle.

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