A single-sided impact-echo floor thickness gauge

Abstract

The utility model relates to the technical field of thickness gauge equipment, concretely to a unilateral impact echo floor thickness gauge, which comprises a thickness gauge body, a plug-in rod, a guide rod and a lifting assembly. The thickness gauge body is detachably connected with the guide rod through the plug-in rod. The lifting assembly comprises an upper connecting seat and a lower connecting seat. The upper connecting seat is rotatably connected with an upper connecting frame, and the lower connecting seat is rotatably connected with a lower connecting frame. The upper connecting frame and the lower connecting frame are both rotatably connected with connecting blocks. One of the connecting blocks is threadedly connected with a threaded rod, and the other connecting block is rotatably connected with the threaded rod. The lower connecting frame is fixedly connected with a handle. The lifting assembly can adjust the height of the guide rod, avoiding the use of ladders or climbing equipment, reducing safety hazards and improving detection efficiency. The detachable design of the plug-in rod and the guide rod facilitates the installation, disassembly and maintenance of the thickness gauge body, improving the use flexibility.

Description

Technical Field

[0001] This utility model relates to the field of thickness gauge equipment technology, specifically a single-sided impact echo floor slab thickness gauge. Background Technology

[0002] During building construction, floor slab thickness measurement is an essential testing item and plays a vital role in ensuring building quality. The uniformity of floor slab thickness and its compliance with design requirements directly affect the structural safety, durability, and functionality of the building. Therefore, floor slab thickness measurement is a key technical step in construction quality acceptance and subsequent maintenance.

[0003] In existing technologies, traditional methods for measuring floor slab thickness mainly include two-sided measurement and destructive testing. Firstly, two-sided measurement typically requires simultaneous operation on both floors, such as using ultrasonic testing equipment. This method not only requires two teams of personnel, making coordination difficult, but also has low efficiency. Especially in high-rise buildings or complex structures, the difficulty and safety hazards of manual operation increase significantly. Secondly, destructive testing methods, such as core drilling, while providing high measurement accuracy, damage the floor slab structure, and the repair process requires additional manpower and material costs, imposing a significant economic burden and time consumption on the project. To address these issues, existing technologies typically employ single-sided testing methods, combined with spectral feature recognition algorithms and environmental parameter correction techniques to improve measurement accuracy. For example, the probe assembly uses a miniature electromagnetic hammer to generate a standard shock wave, which, in conjunction with a suction cup, achieves stable contact with the rough concrete surface. Simultaneously, a piezoelectric ceramic sensor array (sensitivity of 0.1 mV / Pa, sampling rate of 1 MHz) accurately captures the reflected echo signal. The data processing terminal uses third-order spectral analysis. First, it extracts spectral features using Fast Fourier Transform (FFT). Then, it combines this with a Support Vector Machine (SVM) classifier to distinguish between the steel reinforcement reflection signal (high-frequency narrow peak) and the floor slab bottom reflection signal (low-frequency wide peak), dynamically eliminating interference signals and thus reducing measurement errors. Furthermore, environmental data (temperature range -20℃ to 60℃, humidity range 0-100% RH) is collected in real time using temperature and humidity sensors. The sound velocity model is corrected using the formula v = 4000 + 12(T-20) - 0.5H, effectively eliminating sound velocity drift errors caused by environmental factors. Finally, the floor slab thickness is calculated based on the formula v·Δt / 2, and the results are transmitted to the display screen in real time, achieving automated recording and display of measurement data.

[0004] However, although the aforementioned technologies have improved the efficiency and accuracy of floor slab thickness measurement to some extent, some shortcomings still exist in practical applications. For example, the guide rod height of the thickness gauge is usually fixed. When measuring floor slabs with high heights, operators need to use ladders or climbing equipment for assistance, which not only increases safety hazards but also reduces detection efficiency. In addition, the casing and guide rod of the thickness gauge are often designed as a single piece, making the equipment less flexible during installation, disassembly, and maintenance, increasing maintenance costs and operational complexity. Therefore, this utility model proposes a single-sided impact echo floor slab thickness gauge to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a single-sided impact echo floor slab thickness gauge to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a single-sided impact echo floor slab thickness gauge, comprising: a thickness gauge body, one side of the thickness gauge body being fixedly connected to one end of a plug rod, the other end of the plug rod being detachably connected to one end of a guide rod, and the other end of the guide rod being connected to a lifting assembly for driving the guide rod to move up and down.

[0007] The lifting assembly includes an upper connecting seat and a lower connecting seat located below the upper connecting seat. The upper connecting seat is rotatably connected to one end of the upper connecting frame, and the lower connecting seat is rotatably connected to one end of the lower connecting frame. The other ends of both the upper and lower connecting frames are rotatably connected to connecting blocks. There are two connecting blocks, one of which is threadedly connected to a threaded rod, and the other connecting block is rotatably connected to the threaded rod. The lower surface of the lower connecting frame is fixedly connected to a handle.

[0008] Preferably, the top of the guide rod has a groove, which is slidably inserted into the plug rod, and the outer ring surface of the plug rod has a limit groove.

[0009] Preferably, one end of the limiting pin is slidably inserted into the limiting groove, the other end of the limiting pin is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to the inner wall of the limiting hole opened on the top outer ring surface of the guide rod.

[0010] Preferably, the positions of the limiting holes and the grooves correspond one-to-one, and the bottom end of the guide rod is fixedly connected to the upper surface of the upper connecting frame.

[0011] Preferably, the top of the handle is fixedly connected to the lower connecting seat, a power supply box is fixedly installed at the bottom of the handle, and a display screen is fixedly installed on one side of the middle of the handle. The power supply box is electrically connected to the display screen and the thickness gauge body.

[0012] Preferably, one end of the upper connecting frame and the lower connecting frame are rotatably connected to the upper connecting seat and the lower connecting seat respectively by long pins, and the other end of the upper connecting frame and the lower connecting frame are rotatably connected to the connecting block by short pins.

[0013] Preferably, the upper connecting frame and the lower connecting frame are both fixedly connected to toothed blocks at the ends away from the connecting block, and the two toothed blocks mesh and drive each other. A handwheel is fixedly sleeved on one end of the threaded rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The lifting component allows for flexible adjustment of the guide rod height, eliminating the need for operators to use ladders or climbing equipment for assistance, thereby reducing safety hazards and improving testing efficiency.

[0016] 2. The detachable connection design between the plug rod and the guide rod facilitates the installation, disassembly, and maintenance of the thickness gauge body, improving the flexibility of equipment use and the convenience of maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 4 This is a top view of the overall structure of this utility model.

[0021] In the diagram: 1. Thickness gauge body; 2. Connecting rod; 3. Guide rod; 4. Upper connecting seat; 5. Lower connecting seat; 6. Upper connecting frame; 7. Lower connecting frame; 8. Connecting block; 9. Threaded rod; 10. Handle; 11. Groove; 12. Limiting groove; 13. Limiting pin; 14. Spring; 15. Limiting hole; 16. Power supply box; 17. Display screen; 18. Toothed block; 19. Handwheel. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Please see Figures 1 to 4This utility model provides a technical solution: a single-sided impact echo floor slab thickness gauge, comprising: a thickness gauge body 1, which measures the thickness of the floor slab; one side of the thickness gauge body 1 is fixedly connected to one end of a connecting rod 2, and the other end of the connecting rod 2 is detachably connected to one end of a guide rod 3; the detachable connection between the connecting rod 2 and the guide rod 3 facilitates the subsequent installation, removal, and maintenance of the thickness gauge body 1; the other end of the guide rod 3 is connected to a lifting assembly that drives the guide rod 3 to move up and down; the lifting assembly can drive the guide rod 3 to rise and fall, thereby adjusting the height of the guide rod 3 and avoiding the inconvenience of personnel climbing; the lifting assembly includes... The device includes an upper connecting seat 4, with a lower connecting seat 5 located below it. The upper connecting seat 4 is rotatably connected to one end of the upper connecting frame 6, and the lower connecting seat 5 is rotatably connected to one end of the lower connecting frame 7. The other ends of both the upper connecting frame 6 and the lower connecting frame 7 are rotatably connected to connecting blocks 8. There are two connecting blocks 8, which are symmetrically arranged on both sides of the upper connecting seat 4 and the lower connecting seat 5. One of the connecting blocks 8 has a threaded hole and is threadedly connected to a threaded rod 9, while the other connecting block 8 is rotatably connected to the threaded rod 9. The lower surface of the lower connecting frame 7 is fixedly connected to the handle 10. The outer surface of the handle 10 has anti-slip textures to improve the stability of the grip during operation.

[0024] In use, the operator holds the handle 10 and operates the lifting assembly according to the height of the floor slab. The lifting assembly can adjust the thickness gauge body 1 to a suitable height position. Specifically, by twisting the threaded rod 9, one connecting block 8 is threadedly connected to the threaded rod 9, and the other connecting block 8 is rotatably connected to the threaded rod 9. Under the limit of the upper connecting frame 6 and the lower connecting frame 7, the two connecting blocks 8 move towards or away from each other. Then, under the limit of the upper connecting seat 4 and the lower connecting seat 5, the included angle between the two upper connecting frames 6 and the two lower connecting frames 7 gradually decreases or increases, thereby realizing the lifting and lowering of the guide rod 3. This avoids the need for the operator to use ladders or climbing equipment for auxiliary operation, which not only increases safety hazards but also reduces detection efficiency. At the same time, the sliding connection between the plug rod 2 and the guide rod 3 facilitates the installation, disassembly and maintenance of the thickness gauge body 1, improving the flexibility of the thickness gauge body 1 during use.

[0025] The top of the guide rod 3 has a groove 11, which is slidably inserted into the plug rod 2. The groove 11 is adapted to the plug rod 2, thus facilitating the positioning of the plug rod 2. The outer ring surface of the plug rod 2 has a limiting groove 12, which is arranged in a circumferential array. The limiting groove 12 is slidably inserted into one end of the limiting pin 13, limiting one end of the limiting pin 13. The other end of the limiting pin 13 is fixedly connected to one end of the spring 14. The other end of the spring 14 is fixedly connected to the inner wall of the limiting hole 15 on the top outer ring surface of the guide rod 3. The limiting pin 13 passes through the limiting hole 15 and is slidably connected to the limiting hole 15. The opening position of the limiting hole 15 corresponds one-to-one with the opening position of the groove 11. The bottom end of the guide rod 3 is fixedly connected to the upper surface of the upper connecting frame 6, so that the guide rod 3 can be driven to move synchronously through the upper connecting frame 6.

[0026] The top of the handle 10 is fixedly connected to the lower connecting seat 5, and a power supply box 16 is fixedly installed at the bottom of the handle 10. A display screen 17 is fixedly installed on one side of the middle of the handle 10. The power supply box 16 is electrically connected to the display screen 17 and the thickness gauge body 1. The power supply box 16 supplies power to various electrical components to ensure stability during use. One end of the upper connecting frame 6 and the lower connecting frame 7 is rotatably connected to the upper connecting seat 4 and the lower connecting seat 5 respectively through a long pin shaft. The other end of the upper connecting frame 6 and the lower connecting frame 7 is rotatably connected to the connecting block 8 through a short pin shaft. The ends of the upper connecting frame 6 and the lower connecting frame 7 away from the connecting block 8 are fixedly connected to toothed blocks 18. The two toothed blocks 18 mesh and drive each other. The meshing between the two toothed blocks 18 improves the transmission stability between the upper connecting seat 4, the lower connecting seat 5 and the upper connecting frame 6 and the lower connecting frame 7. A handwheel 19 is fixedly sleeved on one end of the threaded rod 9, so that the threaded rod 9 can be rotated by turning the handwheel 19.

[0027] In actual use, the operator holds the handle 10 to stabilize the entire device and operates the lifting assembly according to the floor height. The thickness gauge body 1 can be adjusted to a suitable height using the lifting assembly. Specifically, by turning the handwheel 19, the threaded rod 9 rotates. Since one connecting block 8 is threadedly connected to the threaded rod 9, and the other connecting block 8 is rotatably connected to the threaded rod 9, the two connecting blocks 8 move towards or away from each other under the limiting positions of the upper connecting frame 6 and the lower connecting frame 7. Then, under the limiting positions of the upper connecting seat 4 and the lower connecting seat 5, the included angle between the two upper connecting frames 6 and the two lower connecting frames 7 gradually decreases or increases. When the two connecting blocks 8 move towards each other, the meshing action of the toothed blocks 18 connected to the upper connecting frame 6 and the lower connecting frame 7 gradually decreases the included angle between the two upper connecting frames 6 and the two lower connecting frames 7, thereby lifting the guide rod 3 through the upper connecting seat 4. Conversely, the guide rod 3 is lowered through the upper connecting seat 4. The height of the guide rod 3 is adjusted by lowering it, thus avoiding the need for operators to use ladders or climbing equipment for auxiliary operation, which not only increases safety hazards but also reduces detection efficiency. At the same time, when the thickness gauge body 1 needs to be disassembled for maintenance, the limit pin 13 is pulled outward, causing the limit pin 13 to stretch the spring 14 and slide out of the limit groove 12, releasing the limit on the plug rod 2. Then the plug rod 2 can be pulled out of the groove 11, and the thickness gauge body 1 can be disassembled. When installation is required, the plug rod 2 is inserted into the groove 11, the limit pin 13 is released, and under the reverse elastic force of the spring 14, the limit pin 13 slides into the limit groove 12 in the limit hole 15, thus completing the limit on the thickness gauge body 1. This makes it easy to install, disassemble and maintain the thickness gauge body 1, improving the flexibility of the thickness gauge body 1 during use. The calculated data is finally transmitted to the display screen 17, making it easy for operators to record and view.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-sided impact echo floor slab thickness gauge, comprising a thickness gauge body (1), characterized in that: The thickness gauge body (1) is fixedly connected to one end of the plug rod (2) on one side, and the other end of the plug rod (2) is detachably connected to one end of the guide rod (3). The other end of the guide rod (3) is connected to a lifting component that drives the guide rod (3) to move up and down. The lifting assembly includes an upper connecting seat (4), and a lower connecting seat (5) is provided on the lower side of the upper connecting seat (4). The upper connecting seat (4) is rotatably connected to one end of the upper connecting frame (6), and the lower connecting seat (5) is rotatably connected to one end of the lower connecting frame (7). The other ends of the upper connecting frame (6) and the lower connecting frame (7) are rotatably connected to the connecting block (8). There are two connecting blocks (8). One of the connecting blocks (8) is threadedly connected to the threaded rod (9), and the other connecting block (8) is rotatably connected to the threaded rod (9). The lower surface of the lower connecting frame (7) is fixedly connected to the handle (10).

2. The single-sided impact echo floor slab thickness gauge according to claim 1, characterized in that: The guide rod (3) has a groove (11) at its top end, and the groove (11) is slidably inserted into the plug rod (2). The plug rod (2) has a limit groove (12) on its outer ring surface.

3. The single-sided impact echo floor slab thickness gauge according to claim 2, characterized in that: The limiting groove (12) is slidably inserted into one end of the limiting pin (13), the other end of the limiting pin (13) is fixedly connected to one end of the spring (14), and the other end of the spring (14) is fixedly connected to the inner wall of the limiting hole (15) opened on the top outer ring surface of the guide rod (3).

4. The single-sided impact echo floor slab thickness gauge according to claim 3, characterized in that: The opening positions of the limiting hole (15) correspond one-to-one with the opening positions of the groove (11), and the bottom end of the guide rod (3) is fixedly connected to the upper surface of the upper connecting frame (6).

5. A single-sided impact echo floor slab thickness gauge according to claim 1, characterized in that: The top of the grip (10) is fixedly connected to the lower connecting seat (5), the bottom of the grip (10) is fixedly installed with a power supply box (16), and the middle side of the grip (10) is fixedly installed with a display screen (17). The power supply box (16), the display screen (17), and the thickness gauge body (1) are all electrically connected.

6. The single-sided impact echo floor slab thickness gauge according to claim 1, characterized in that: One end of the upper connecting frame (6) and the lower connecting frame (7) are rotatably connected to the upper connecting seat (4) and the lower connecting seat (5) respectively by long pins, and the other end of the upper connecting frame (6) and the lower connecting frame (7) are rotatably connected to the connecting block (8) by short pins.

7. A single-sided impact echo floor slab thickness gauge according to claim 6, characterized in that: The upper connecting frame (6) and the lower connecting frame (7) are both fixedly connected to toothed blocks (18) at the ends away from the connecting block (8). The two toothed blocks (18) mesh and drive each other. A handwheel (19) is fixedly sleeved on one end of the threaded rod (9).

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