A rebound rebound instrument with an auxiliary measuring device

Abstract

The invention discloses a rebound hammer with an auxiliary measuring device, which comprises a rebound hammer main body and an auxiliary device set outside the rebound hammer main body. Consisting of a conduit, the top of the circular casing is provided with a circular plate, and a positioning mechanism and a guiding mechanism connected with the circular plate are respectively provided in the conduit, and the positioning mechanism includes two symmetrically arranged on the circular plate. Telescopic positioning rods, one end of the two telescopic positioning rods away from the circular flat plate is connected with a spring buckle, and the rear end of the spring buckle is connected with a spring B; the guide mechanism includes two symmetrically arranged on the circular flat plate Telescopic guide rods, one end of the two telescopic guide rods away from the circular flat plate is connected with a backing plate, and the rear ends of the backing plates are connected with spring B. The invention can make the axis of the rebound hammer always perpendicular to the concrete test surface, greatly reducing the working intensity of workers and improving the rebound working efficiency.

Description

technical field [0001] The invention belongs to the technical field of concrete structure detection, in particular to a rebound hammer with an auxiliary measuring device, which is mainly used for measuring the strength of concrete. Background technique [0002] The concrete rebound tester uses a spring to drive the bounce hammer and the restoring force of the instantaneous elastic deformation generated by the bounce rod hitting the concrete surface, so that the bounce hammer drives the pointer to bounce back and indicates the distance of the bounce, so as to rebound The value is used as one of the indicators related to the compressive strength of concrete, and then combined with the carbonation depth of concrete in the corresponding area, the compressive strength of concrete can be deduced. Because the rebound tester has the advantages of lightness, flexibility, low price, no power supply, easy to grasp, the button is not easy to fall off by stretching process, and the point...

AI Technical Summary

Problems solved by technology

But every time you measure, you first need to push the hammer body to a certain position by external force, and then use the control button to release the elastic force accumulated in the compression spring to push the hammer body out, so that the hammer body bounces vertically on the concrete surface, while the traditional rebound When measuring, it is only necessary to push the rebound hammer at a constant speed until the bullet hammer completely enters the interior of the rebound hammer to complete a measurement. Therefore, the measurement speed of the rebound hammer is slow, which is a waste of time. In the process of positioning, the flat hat head is a force transmission structure, so after long-term use, there will inevitably be a certain deformation, which will affect the effect of adjusting the verticality between the impact plane and the hammer body

In addition, during the retraction and ejection process of the hammer body of this invention, there will be a cavity at the front end of the device, which will allow external dust, water, etc. to enter the interior of the instrument, which will reduce the durability and measurement accuracy of the instrument.

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