Pavement deflection automatic detection device based on Benkelman beam method

Abstract

The invention relates to the technical field of civil engineering and construction detection, in particular to a pavement deflection automatic detection device based on a Benkelman beam method. The pavement deflection automatic detection device based on the Benkelman beam method comprises a rigid bracket with rollers. Connecting arms for connecting a Benkelman beam are arranged on both sides of the rigid bracket. Hydraulic cylinders for pressing down the Benkelman beam are fixed to the connecting arms. Dial gauges which abut against the Benkelman beam are arranged on the connecting arms. A pair of connecting arms are correspondingly arranged on the front and rear ends of the rigid bracket. The connecting arms are connected with the rigid bracket in a pivoted mode. A linkage mechanism is fixedly arranged on the rigid bracket, and the linkage mechanism comprises an executive element and a connecting rod, and the executive element is connected with the connecting rod. The opposite ends ofa pair of connecting arms are connected with the connecting rod in a pivoted mode. According to the pavement deflection automatic detection device based on the Benkelman beam method, the Benkelman beam can be moved and placed through single-person operation, and a measuring head can be placed in front of the center of a wheel gap about 3-5cm in the standard requirement, so that the manual quantity is reduced, and the working efficiency is improved; and the random error, the system error and the like in the measurement process can be effectively reduced, and the authority of the detection datais strengthened.

Description

technical field [0001] The invention relates to the technical field of civil and construction engineering detection, in particular to an automatic detection device for road surface deflection based on the Beckman beam method. Background technique [0002] The deflection value of the pavement refers to the vertical deformation of the pavement under the action of the wheel load. It is an index reflecting the strength of the pavement. The thicker the pavement structure, the higher the strength of the pavement material or roadbed, the smaller the deflection value, and vice versa The larger the deflection value is. [0003] The Beckman beam road deflection meter is made by the principle of leverage, and is used to measure the road deflection value between the two wheels of the rear axle of the car. The pavement forms local subsidence under the action of load, and the shape reflected by the pavement is a basin with the load point as the center, which is called a deflection basin....

AI Technical Summary

Problems solved by technology

[0005] At present, the deflection detection process requires the cooperation of multiple people. At least one person is required to drive as the driver, and one person is required to wave the flag to direct the driver to drive. It also requires personnel to arrange Beckman beams, read dial indicator readings, and measure ground temperature. The labor cost required for detection stay high

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