Accommodated measuring device for accurately measuring thickness of floor slab

Abstract

The invention relates to a measuring device, and particularly to a simple measuring device which accurately measures thickness of a floor slab and can be accommodated and can easily withdraw a rod. The measuring device comprises a vertical rod with scale identification, and a rotating rod which is used for blocking the bottom of the floor slab. The rotating rod is hinged with the bottom end of thevertical rod. When the rotating rod is blocked with the bottom of the floor slab, the blocked horizontal plane is aligned with a zero scale on the vertical rod. The measuring device comprises a sliderule which sleeves the vertical rod and can perform reciprocation along the vertical rod. The slide rule is provided with an inclinometer. The vertical rod matches a universal horizontal instrument on the inclinometer. The measuring device can measure a hole with high hole inclination, thereby realizing higher practicability of the measuring device. The slide rule is provided with a barrel whichis provided with an amplifier, thereby greatly facilitating number reading. A magnetic is ingeniously arranged between the vertical rod and the horizontal rod, and the measuring device can be easily kept to vertical after measurement, thereby taking out the instrument from the hole, and reducing measuring time. Because of low use frequency of the measuring device, the accommodated measuring devicehas an accommodating function, thereby preventing damage to a certain extent.

Description

technical field [0001] The invention relates to a measuring device, in particular to a simple measuring device which can accurately measure the thickness of floor slabs, can be accommodated, and can be automatically and easily retracted. Background technique [0002] In the construction inspection and acceptance process of construction projects, in order to ensure that the thickness of the floor slab meets the design and specification requirements, it is necessary to measure the thickness of the floor slab. [0003] Generally, there are two methods for measuring plate thickness: one is an electronic instrument that uses the combination of electromagnetic wave kinematics and dynamics. When using it, two people are needed, one is upstairs, and the other is downstairs. Standing against the transmitter, the people upstairs have to use communication and mine-sweeping methods to make the receiver and transmitter in the same center to measure. Obviously, the efficiency is not high....

AI Technical Summary

Problems solved by technology

[0003] Generally, there are two methods for measuring plate thickness: one is an electronic instrument that uses the combination of electromagnetic wave kinematics and dynamics. When using it, two people are needed, one is upstairs, and the other is downstairs. Standing against the transmitter, the people upstairs have to use communication and mine-sweeping methods to make the receiver and transmitter in the same center to measure. Obviously, the efficiency is not high. Although the accuracy is high, due to the expensive equipment and the thickness of the measuring board The reason for the low frequency of use (generally construction sites are centralized one or two measurements is enough), and it is rarely popularized;

[0004] The second is to use the original method to drill holes on the floor or use PVC pipes to reserve measuring holes. The former can be imagined. Because the steel bars in the floor are dense, encountering steel bars in the process of drilling is tantamount to futile work. The latter is always tilted when pouring concrete, so the measuring hole is basically not a theoretical vertical hole, but a hole with an inclined angle. The traditional measurement is to support a steel plate at the bottom of the hole, and then use a tape measure to stretch it out. Measure in the hole, because the

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