Floor thickness gauge

Abstract

The invention discloses a floor thickness gauge. The thickness gauge comprises a shell and a core rod. An internal portion of the shell is provided with a cavity. Left and right side walls of the shell are symmetrically provided with groove holes connected to the cavity. An outer wall of the shell is provided with a vernier which can slide up and down. An upper end of the shell is provided with a digital display device used for displaying a vernier reading. The core rod is hinged to an expansion clamping sheet. The expansion clamping sheet is provided with a limiting portion. The limiting portion is formed by a limiting surface, a support surface and a corner camber surface which connects the limiting surface and the support surface. The core rod is provided with a pasting surface. In an original state, the limiting surface is an upper end surface of the expansion clamping sheet and is a horizontal surface. The support surface is pasted to the pasting surface. The expansion clamping sheet possesses a degree of freedom which is formed by rotating the expansion clamping sheet upwardly around a hinge joint. A length of the core rod is greater than a depth of the cavity. The core rod is movably arranged in the shell cavity. The expansion clamping sheet can be inserted outside the shell groove holes from the cavity and can be expanded to be in the original state. Operation is convenient, a measured error is small, work efficiency is increased and safety of detection personnel is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of construction engineering detection, and in particular relates to a floor thickness gauge. Background technique [0002] Appendix F of "Code for Construction Quality Acceptance of Concrete Structure Engineering" (GB 50204-2015) stipulates that the detection of floor thickness can be carried out by non-destructive method or partial damage method, or by non-destructive method and local damage method for calibration. The existing non-destructive testing technology generally uses ultrasonic testing, and the testing equipment includes a host, a transmitting probe, a receiving probe, an extension rod and other equipment. During detection by this method, the transmitting probe is fixed on the bottom of the floor with an extension rod, and the host is placed on the top of the floor, and the thickness of the floor is measured by moving the receiving probe left and right or forward and backward. The existing local ...

AI Technical Summary

Problems solved by technology

In the actual measurement process, this method takes a long time to measure, and the measurement personnel are prone to fatigue, which will cause the transmitter probe to shake, which will affect the measurement efficiency and measurement accuracy.

[0006] 3) During the measurement process, the inspectors are located on the upper and lower parts of the floor, and the same panel needs to be changed multiple times for simultaneous inspection of the same panel, so it is difficult for the inspectors to communicate

[0007] 5) The upstairs board needs to correspond to the downstairs board. For complex structures and large structures, finding the corresponding board needs to be led by a special person, or it takes a lot of time, requires the cooperation of multiple people, and the measurement efficiency is low

[0008] 5) In actual engineering, when the lower part of the floor is full of items or the floor height is too high (such as a large cantilever structure) exceeding the range of the extension rod, the detection process is not qualified or dangerous

In the actual measurement process, this method takes a long time to measure, and the measurement personnel are prone to fatigue, which causes the plate to shake, which affects the measurement efficiency and measurement accuracy

[0011] 2) In the process of secondary measurement of thin steel bars, there must be secondary measurement errors, which will affect the measurement accuracy

When the thickness of the plate is large, the measuring scale of the vernier caliper has low rigidity, the measuring scale has bending deformation, and the measured value is too large

[0012] 3) During the measurement process, the inspectors are located on the upper and lower parts of the floor, and the same panel needs to be changed multiple times for simultaneous inspection of the same panel, so it is difficult for the inspectors to communicate

[0013] 4) The upstairs deck needs to correspond to the downstairs deck. For complex structures and large structures, finding the corresponding deck requires a special person to lead, or it takes a lot of time, requires the cooperation of multiple people, and the measurement efficiency is low

[0014] 5) In actual engineering, when the lower part of the floor is full of items or the floor height is too high (such as a large cantilever structure) exceeding the range of the extension rod, the detection process is not qualified or dangerous

Images