Calibration device for concrete rebound apparatus

Abstract

The invention relates to a calibration device for a concrete rebound apparatus, which comprises a device support, a spring seat is arranged on the device support, a force measuring spring is assembled in the spring seat in a guiding and moving manner, and one end of the force measuring spring is a force transmission end used for being matched with the rebound apparatus in a force transmission manner. The other end of the force measuring spring is provided with a spring compression amount adjusting structure used for adjusting the compression amount of the force measuring spring. The calibration device further comprises a length measuring structure used for measuring the compression length of the force measuring spring in the calibration process. The invention provides the calibration device for the concrete resiliometer, which can be used for calibrating the resiliometer without dismounting the resiliometer.

Description

technical field [0001] The invention relates to a calibration device for a concrete rebound tester in the field of calibration and verification. Background technique [0002] Concrete rebound ceremony is a kind of spring-driven hammer, the hammer hits the concrete surface through the bullet rod, the concrete surface produces elastic deformation to absorb energy, and the hammer rebounds, and the hardness of the concrete is characterized according to the energy loss. The principle used is that the harder the concrete is, the less energy absorbed by the elastic deformation of the concrete, and the less energy is lost during the impact of the impact hammer. [0003] The working process of the concrete rebound tester is as follows: figure 1 As shown, in order to clearly show the problem, the first state, the second state, the third state, the fourth state and the fifth state occur in chronological order. When working, first raise the height of the bounce hammer 16, as in the fir...

AI Technical Summary

Problems solved by technology

This calibration method has the following problems: 1) Disassembling the rebound hammer requires a large workload, which increases the difficulty of calibration; 2) After the spring of the hammer hammer is taken out of the rebound hammer, it has been out of its real working environment, even if After the calibration of the spring is completed and the spring of the hammer hammer is installed in the rebound hammer, it is still unknown whether it is accurate

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