A device for detecting hollowing of ceramic floor tiles based on vibration frequency
Through a detection device based on vibration frequency, the metal vibration transmission round seat and vibration excitation device are used to detect the vibration frequency of ceramic floor tiles, which solves the problems of hammer damage, inaccurate judgment of experience and high instrument costs in the prior art, and achieves no Mark, accurate and economical hollow inspection of ceramic floor tiles.
Patent Information
- Application Number
- CN201910110462.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-02-11
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2039-02-11
AI Technical Summary
The existing methods for laying hollow drums in ceramic floor tiles have problems such as hammering may damage floor tiles, relying on experience to judge, resulting in inaccurate results, high instrument costs and susceptible to external noise interference.
Design a detection device based on vibration frequency, including a metal vibration transmission round seat, a vibration measuring device, a metal vibration rod and an excitation device. Vibration is generated through the excitation device and the anti-vibration frequency is detected, and the hollow position is determined, and a portable high Accuracy vibrator and small vibration motor to avoid hammering and external interference.
It realizes traceless detection, accurate judgment, and reduces costs, reduces errors among technicians, and improves the practicality of detection and the intuitiveness of data.
Smart Images
Figure CN111551640B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a device for detecting hollowing of ceramic floor tiles based on vibration frequency. Background Art
[0002] If there are hollows in ceramic floor tiles, they will easily become loose, fall off, or crack. If there are hollows in the kitchen and bathroom floors, because the kitchen and bathroom floors are often in contact with water, water will penetrate from the brick seams to the bottom of the tiles. Since the tiles are waterproofed, the water will accumulate under the tiles and become stagnant water that is difficult to drain. Finally, it is easy to deteriorate and produce odors. Therefore, it is very important to detect hollows in ceramic floor tiles.
[0003] In the prior art, the detection of hollowing of ceramic floor tiles mainly adopts the hammering method proposed in GB 50209-2010 "Code for Acceptance of Construction Quality of Building Floor Engineering": the acoustic parameters are obtained by hammering, and the location of the hollowing is determined through empirical judgment or instrument collection and analysis. The shortcomings of this method are: hammering can easily leave scratches on the surface of ceramic floor tiles, especially ceramic floor tiles in living rooms and bedrooms, which affects the appearance; empirical judgment is mainly based on the auditory perception of technicians, and the results obtained by different technicians have large errors, and sometimes even completely opposite; the instruments for collecting and analyzing acoustic parameters are expensive and easily disturbed by external sounds, which limits its scope of application.
[0004] In summary, due to the above-mentioned shortcomings of the existing detection methods, design and creation are needed. Summary of the invention
[0005] The present invention proposes a ceramic floor tile hollowing detection device with strong practicality, reasonable design and accurate detection, and also provides a detection method using the device. The device and the detection method can solve the problems existing in the existing ceramic floor tile hollowing detection method.
[0006] The technical solution adopted by the present invention is: a vibration frequency-based ceramic floor tile paving hollow detection device, including a metal vibration transmitting circular seat located on the surface of the ceramic floor tile; a vibration measuring device is vertically connected to the edge of the upper surface of the metal vibration transmitting circular seat; a metal vibration transmitting rod is vertically fixedly connected to the center of the upper surface of the metal vibration transmitting circular seat; a metal counterweight circular plate is fixedly connected to the upper surface of the metal vibration transmitting rod; a vibration excitation device is fixedly connected to the upper surface of the metal counterweight circular plate; the longitudinal axes of the metal vibration transmitting circular seat, the metal vibration transmitting rod and the metal counterweight circular plate are coaxial. The present invention transmits the vibration generated by the vibration excitation device to the surface of the ceramic floor tile through the metal counterweight circular plate, the metal vibration transmitting rod and the metal vibration transmitting circular seat, detects the reflection frequency of the metal vibration transmitting circular seat, and determines the position where the reflection frequency is ≤ the maximum reflection frequency of the ceramic floor tile × 0.5 as the hollow position.
[0007] Furthermore, the metal vibration transmitting round seat is cylindrical; its lower surface contacts the surface of the ceramic floor tile, and the area of the lower surface is (1 / 10~1 / 30) of the surface area of the ceramic floor tile.
[0008] Furthermore, the vibration measuring device adopts a portable high-precision vibration meter, which can detect the frequency with an accuracy of 0.1 Hz; the vibration measuring direction is up and down vibration.
[0009] Furthermore, the metal vibration transmission rod is cylindrical; the diameter of its lower surface is greater than 10 mm and smaller than the diameter of the upper surface of the metal vibration transmission round seat, and the height is greater than the height of the vibration measuring device.
[0010] Furthermore, the metal counterweight circular plate is cylindrical; the added counterweight should prevent the detection device from shifting or tipping over during vibration.
[0011] Furthermore, the vibration device adopts a small vibration motor with adjustable power (50w~130w), vibration frequency (50Hz~60Hz), excitation force (75kg~200kg), adjustable excitation time, and continuous excitation. The excitation direction is up and down vibration along the longitudinal axis of the metal counterweight circular plate, metal vibration transmission rod and metal vibration transmission circular seat.
[0012] The beneficial effects of the present invention are as follows: (1) During the detection process, the vibration generated by the excitation device is transmitted to the surface of the ceramic floor tile through the metal vibration rod and the metal vibration seat, and then the vibration is reflected by the metal vibration seat to detect the reflection frequency of the metal vibration seat, and the position where the reflection frequency is ≤ the maximum reflection frequency of the ceramic floor tile × 0.5 is determined as the hollow position. The method has strong practicality, reasonable design and accurate detection. (2) No hammering is used, and no scratches will be left on the surface of the ceramic floor tile. The reflection frequency is used as the basis for judging the hollow position, which is a quantitative detection method and avoids the drawback of large errors in the results of experience judgment among different technicians. The portable high-precision vibration meter and excitation device used in the detection device are both universal standardized products, which are easy to purchase and low in cost, solving the problem of expensive cost of instruments for collecting and analyzing acoustic parameters. The vibration frequency detection is less affected by external interference factors, and the data is intuitive, solving the problem that the collection and analysis of acoustic parameters are easily interfered by external sounds. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the main view of the structure of the present invention.
[0014] Figure 2 It is a schematic diagram of the maximum anti-vibration frequency detection moving route of the present invention.
[0015] Figure 3 It is a schematic diagram of the moving route for hollow drum position frequency detection of the present invention. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all possible alternatives, improvements and equivalents within the scope of the claims.
[0017] Reference Figure 1-3 A device for detecting hollowing of ceramic floor tiles based on vibration frequency, comprising a metal vibration transmitting circular seat 4 located on the surface of a ceramic floor tile 5; a vibration measuring device 3 is vertically connected to the edge of the upper surface of the metal vibration transmitting circular seat 4; a metal vibration transmitting rod 2 is vertically fixedly connected to the center of the upper surface of the metal vibration transmitting circular seat 4; a metal counterweight circular plate 8 is fixedly connected to the upper surface of the metal vibration transmitting rod 2; a vibration excitation device 1 is fixedly connected to the upper surface of the metal counterweight circular plate 8; the longitudinal axes of the metal vibration transmitting circular seat 4, the metal vibration transmitting rod 2 and the metal counterweight circular plate 8 are coaxial. The present invention transmits the vibration generated by the vibration excitation device 1 to the surface of the ceramic floor tile 5 through the metal counterweight circular plate 8, the metal vibration transmitting rod 2 and the metal vibration transmitting circular seat 4, and then reflects the metal vibration transmitting circular seat 4, detects the reflection frequency of the metal vibration transmitting circular seat 4, and determines the position where the reflection frequency is ≤ the maximum reflection frequency of the ceramic floor tile 5 × 0.5 as the hollowing position 7.
[0018] The ceramic floor tiles 5 described in this embodiment have a size of 800 mm×800 mm.
[0019] The metal vibration transmitting round seat 4 described in this embodiment is cylindrical, made of steel, with a diameter of 70 mm and a height of 60 mm; its lower surface is in contact with the surface of the ceramic floor tile 5.
[0020] The vibration measuring device 3 described in this embodiment adopts the Xima AR63B portable high-precision separation type vibration meter, which can detect frequency with an accuracy of 0.1 Hz. The vibration measuring direction is up and down vibration, and it is connected to the metal vibration transmission round seat 4 by a magnetic seat.
[0021] The metal vibration transmission rod 2 described in this embodiment is cylindrical, made of steel, with a diameter of 20 mm and a height of 160 mm.
[0022] The metal counterweight circular plate 8 described in this embodiment is cylindrical, made of steel, with a diameter of 100 mm and a height of 50 mm.
[0023] The vibration device 1 described in this embodiment adopts a special motor for shaking buildings with a voltage of 220V, a power of 100w, a vibration frequency of 50Hz, an exciting force of 150kg, an excitation time of 1s, and continuous excitation. The excitation direction is to vibrate up and down along the longitudinal axis of the metal counterweight circular plate 8, the metal vibration transmission rod 2 and the metal vibration transmission circular seat 4.
[0024] The detection steps of this embodiment are as follows: (1) Assemble the metal vibration transmitting round seat 4, the metal vibration transmitting rod 2, the vibration measuring device 3, the metal counterweight round plate 8 and the excitation device 1; (2) Place the lower surface of the metal vibration transmitting round seat 4 on the surface of the ceramic floor tile 5, start the excitation device 1 and the vibration measuring device 3, and adjust the excitation force and the excitation interval time gear so that the detection device does not move during vibration and can record the frequency value in time; (3) Figure 2 As shown, a sawtooth moving detection device is arranged with measuring points; (4) each measuring point records at least 5 frequency values. When the difference between a single frequency value and the average value of the 5 frequency values is less than 10%, the average value of the 5 frequency values is taken as the frequency value of the measuring point, and the maximum frequency value is calculated; (5) all measuring points whose anti-vibration frequency is ≤ the maximum anti-vibration frequency of the ceramic floor tile 5 × 0.5 are found, and the frequency value is calculated according to the following formula: Figure 3 As shown, with the measuring point as the center, move the detection device around until the reflection frequency is greater than the maximum reflection frequency of the ceramic floor tile 5 × 0.5, draw a circle along the edge of the lower surface of the metal vibration transmission round seat 4, draw tangents on the outside of adjacent circles, and connect all the tangents to get the position of the hollow 7 between the base layer 6 and the ceramic floor tile 5.
Claims
1. A device for detecting hollowing of ceramic floor tiles based on vibration frequency, characterized in that: It includes a metal vibration transmitting round seat located on the surface of the ceramic floor tile; a vibration measuring device is vertically connected to the edge of the upper surface of the metal vibration transmitting round seat; a metal vibration transmitting rod is vertically fixedly connected to the center of the upper surface of the metal vibration transmitting round seat; a metal counterweight circular plate is fixedly connected to the upper surface of the metal vibration transmitting rod; a vibration exciting device is fixedly connected to the upper surface of the metal counterweight circular plate; the longitudinal axes of the metal vibration transmitting round seat, the metal vibration transmitting rod and the metal counterweight circular plate are coaxial.
2. The device for detecting hollowing of ceramic floor tiles based on vibration frequency according to claim 1, characterized in that: The metal vibration transmitting round seat is cylindrical; Its lower surface contacts the surface of the ceramic floor tile, and the area of the lower surface is 1 / 10 to 1 / 30 of the surface area of the ceramic floor tile.
3. The device for detecting hollowing of ceramic floor tiles based on vibration frequency according to claim 1, characterized in that: The vibration measuring device adopts a portable high-precision vibration measuring instrument, which can detect the frequency with an accuracy of 0.1 Hz; the vibration measuring direction is up and down vibration.
4. The device for detecting hollowing of ceramic floor tiles based on vibration frequency according to claim 1, characterized in that: The metal vibration transmission rod is cylindrical; the diameter of its lower surface is greater than 10 mm and smaller than the diameter of the upper surface of the metal vibration transmission round seat, and the height is greater than the height of the vibration measuring device.
5. The device for detecting hollowing of ceramic floor tiles based on vibration frequency according to claim 1, characterized in that: The metal counterweight circular plate is cylindrical; the added counterweight should prevent the detection device from shifting or tipping over during vibration.
6. A ceramic floor tile paving hollow detection device based on vibration frequency according to any one of claims 1 to 5, characterized in that: The vibration device adopts a small vibration motor with a power of 50W to 130W, a vibration frequency of 50Hz to 60Hz, an adjustable excitation force of 75kg to 200kg, an adjustable excitation time, and continuous excitation. The excitation direction is up and down vibration along the longitudinal axis of the metal counterweight circular plate, the metal vibration transmission rod and the metal vibration transmission circular seat.
7. A method for detecting hollowing of ceramic floor tiles based on vibration frequency, comprising the following detection steps: (1) assembling a metal vibration transmitting round seat, a metal vibration transmitting rod, a vibration measuring device, a metal counterweight round plate and a vibration exciting device; (2) placing the lower surface of the metal vibration transmitting round seat on the surface of the ceramic floor tile, starting the vibration exciting device and the vibration measuring device, adjusting the vibration force and the vibration interval time gear so that the detection device does not move during vibration and can record the frequency value in time; (3) moving the detection device in a zigzag shape and arranging the measuring points; (4) recording at least 5 frequency value. When the difference between a single frequency value and the average value of the five frequency values is less than 10%, take the average value of the five frequency values as the frequency value of the measuring point and calculate the maximum frequency value; (5) Find all measuring points whose reflection frequency is ≤ the maximum reflection frequency of the ceramic floor tile × 0.
5. With the measuring point as the center, move the detection device in all directions until the reflection frequency is greater than the maximum reflection frequency of the ceramic floor tile × 0.
5. Draw a circle along the edge of the lower surface of the metal vibration transmission round seat, draw tangents on the outside of adjacent circles, and connect all tangents, which is the hollow position between the base layer and the ceramic floor tile.