Simple measuring device capable of accurately measuring slab thickness of floor slab

Abstract

The invention relates to a measuring device, in particular to a simple measuring device capable of measuring the slab thickness of a floor slab accurately, and containing and automatically and easilyfolding rods. The simple measuring device comprises a vertical rod provided with scale signs, a rotating rod used for blocking the slab bottom of the floor slab and a slide ruler. The rotating rod ishinged to the bottom end of the vertical rod, when the rotating rod is in blocking connection with the slab bottom of the floor slab, the block-connected horizontal face is aligned with the zero scaleon the vertical rod, the slide ruler is sleeved to the outside of the vertical rod in a sleeving mode and can conduct reciprocating movement along the vertical rod, an angle gauge is arranged on theslide ruler, the vertical rod is matched with an universal gradienter on the angle gague so that a hole with a large hole slope can be measured, thus the practicality of the measuring device is higher, a lens cone provided with a magnifying lens is arranged on the slide ruler, and accordingly reading is facilitated greatly. A magnet is ingeniously arranged between the vertical rod and a horizontalrod, the measuring device can be maintained vertical after measuring is completed so that the measuring device can be taken out from the hole, and the measuring time is shortened. Due to the fact that the utilization frequency of the measuring device is not high, the measuring device is designed with a containing function, and the measuring device is prevented from being damaged to a large extend.

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 hole is inclined, the measured data will have errors, the thickness specification of the floor is within +8mm, -5mm, because of the error, it is easy to cause post-processing of the floor due to inaccurate measurement , if the measurement is inaccurate, it is equivalent to nothing

[0006] In addition, assuming that the actual hole of the measuring hole is a vertical hole, the scale rod of the above-mentioned patent cannot be measured accurately, because the level of the scale rod cannot be guaranteed. This kind of low-accuracy measurement is not as good as directly measuring the plate in the hole with a tape measure Thick convenience

[0007] Furthermore, the authorized announcement number CN204612649U, the patent titled "a measuring tool for floor thickness" has optimized the readings, and the readings can be set at the upper side by using the reading difference, which will increase the length and weight of the vertical bar. clumsy in the process

[0008] In addition, the measuring device with T-shaped structure, when the work is over, uses the horizontal rod to move freely to the vertical state, and the measuring device can only be pulled up when the horizontal rod is stationary, so that the measurement time is increased, or some use double The method of pulling the rod, the structure is also too complicated

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