Floor thickness detection device for engineering detection

By combining an ultrasonic detector and a laser locator, the problem of cumbersome operation in floor slab thickness detection in existing technologies has been solved, enabling rapid and accurate floor slab thickness detection, and improving detection efficiency and equipment reliability.

CN224189196UActive Publication Date: 2026-05-01GUANGDONG BAIDA TESTING TECH SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG BAIDA TESTING TECH SERVICE CO LTD
Filing Date
2025-05-16
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing floor slab thickness detection devices use a rotating screw to drive a double-sided rack to move a lower positioning plate, which is cumbersome, time-consuming, and difficult to meet the needs of large-scale rapid detection.

Method used

It employs an ultrasonic detector combined with a laser locator and a cross emitter. Through the snap-fit ​​design of the connector and interface, it uses ultrasonic signals to calculate the thickness and uses a quick-release mechanism to achieve rapid installation and removal of the cover plate. Combined with the spring plates of the battery compartment to fix the battery, it ensures a stable power supply.

Benefits of technology

It improves the accuracy and efficiency of floor slab thickness detection, reduces human error, simplifies the operation process, enhances the sealing and stability of the equipment, extends the equipment life, and meets the needs of large-scale rapid testing.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of engineering detection, and discloses a floor thickness detection device for engineering detection, which comprises a shell, the left side of the inner wall of the shell is fixedly connected with an ultrasonic detector, the left end of the rear side of the shell is fixedly connected with a connecting port, and the front end of the connecting port is fixedly connected with the rear side of the ultrasonic detector. A connecting opening is formed in the outer wall of the shell, a butt joint opening is formed in the outer wall of the connecting opening, the inner wall of the butt joint opening is clamped with the outer wall of the connecting opening, a connecting pipe is fixedly connected to the rear end of the outer wall of the butt joint opening, a detection head is fixedly connected to the other end of the connecting pipe, and a laser positioner is fixedly connected to the right side of the inner wall of the shell. According to the utility model, on the aspect of detection accuracy, the ultrasonic detection technology is combined with the laser positioner and the cross emitter, the laser positioner accurately measures the thickness of the floor by using the stable propagation characteristic of ultrasonic waves, and the cross emitter assists in determining the detection position, so that personal errors are reduced, and the reliability of the detection result is improved.
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Description

Technical Field

[0001] This utility model relates to the field of engineering testing technology, and in particular to a floor slab thickness testing device for engineering testing. Background Technology

[0002] In the field of building construction, floor slabs are an important component of buildings, and their thickness is directly related to the safety and stability of the building structure. With the rapid development of the construction industry, the requirements for the construction quality of floor slabs are becoming increasingly stringent. Accurate detection of floor slab thickness has become a key link in ensuring project quality, requiring the use of a floor slab thickness detection device for engineering testing.

[0003] A search revealed Chinese patent publication number CN221464515U, which discloses a floor slab thickness detection device for building engineering project management. The device includes a mounting column, an upper positioning plate fitted onto the outer surface of the mounting column, and a fixing bolt threaded to the side of the upper positioning plate for fixed connection between the upper positioning plate and the mounting column. A rotating lead screw is rotatably connected internally to the mounting column, and a movable threaded cylinder is threaded to the outer surface of the rotating lead screw. A double-sided rack is fixed to the bottom end face of the movable threaded cylinder. This design incorporates a rotating lead screw, a movable threaded cylinder, a limiting slide groove, and a limiting slide... Driven by the block, the double-sided rack moves up and down, causing the lower positioning plate to close and extend. When the lower positioning plate extends into a line, the thickness of the floor slab can be accurately read in conjunction with the positioning plate and scale bar. At the same time, when the lower positioning plate closes, the detection device can be easily removed from the reserved hole. The above operations can save detection costs while ensuring the accuracy of floor slab detection. However, the process of driving the double-sided rack by rotating the lead screw to drive the lower positioning plate to close and extend is relatively cumbersome. Each detection requires manual rotation of the lead screw, which involves many steps and is time-consuming, making it difficult to meet the needs of large-scale rapid detection. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a floor slab thickness detection device for engineering testing, which aims to improve the problem that the existing technology involves a cumbersome process of driving a double-sided rack by rotating a lead screw to drive the lower positioning plate to perform closing and extension operations. Each test requires manual rotation of the lead screw, which involves many steps and is time-consuming, making it difficult to meet the needs of large-scale rapid testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a floor slab thickness detection device for engineering testing, comprising a housing, an ultrasonic detector fixedly connected to the left side of the inner wall of the housing, a connection port fixedly connected to the left rear end of the housing, the front end of the connection port being fixedly connected to the rear side of the ultrasonic detector, a mating interface provided on the outer wall of the connection port, the inner wall of the mating interface engaging with the outer wall of the connection port, a connecting pipe fixedly connected to the rear end of the outer wall of the mating interface, a detection head fixedly connected to the other end of the connecting pipe, a laser locator fixedly connected to the right side of the inner wall of the housing, a cross emitter fixedly connected to the right rear end of the outer wall of the housing, a cover plate provided on the top of the outer wall of the housing, a controller fixedly connected to the top of the cover plate, a battery compartment provided at the bottom of the housing, two spring plates fixedly connected to the left and right sides of the inner wall of the battery compartment, and a quick-release mechanism provided on the top of the outer wall of the housing.

[0006] The above technical solution utilizes an outer shell as the main load-bearing structure. An ultrasonic detector, the core component for detecting floor slab thickness, is located on the left inner wall. It calculates the thickness by transmitting and receiving ultrasonic signals and is fixed to a rear connection port. This connection port engages with a corresponding interface, allowing the connected detection head to accurately transmit and receive signals. A laser locator is mounted on the right inner wall of the outer shell, and a cross-shaped transmitter is located on the right rear end of the outer wall. These two components assist in positioning. The laser locator provides a horizontal positioning reference, while the cross-shaped transmitter creates a clear mark on the floor slab surface for precise detection. A cover plate is located on the top of the outer shell, housing a controller that serves as the control center. This controller adjusts the ultrasonic detector's operating parameters, receives and processes data, and outputs results. A battery compartment is located at the bottom of the outer shell, with spring plates on the left and right sides securing the battery to power the device and ensure normal operation. This detection device features a rational structural design, with all components working in tandem. It not only accurately detects floor slab thickness but also improves detection accuracy through positioning auxiliary components. The controller is easy to operate, and the battery compartment ensures a reliable power supply, effectively enhancing detection efficiency.

[0007] As a further description of the above technical solution:

[0008] The quick-release mechanism includes two connecting plates, the bottoms of which are fixedly connected to the top front side of the outer wall of the outer shell. The bottom front and rear sides of the two cover plates are provided with connecting grooves, the inner walls of which engage with the outer walls of the two connecting plates. The top left and right sides of the outer wall of the outer shell are fixedly connected with two sealing plates. The bottom left and right sides of the cover plates are also provided with two sealing grooves, the outer walls of which engage with the inner walls of the two sealing plates.

[0009] The above technical solution involves two connecting plates fixed to the front top of the outer casing and engaging with the connecting groove at the bottom of the cover plate, enabling quick installation and removal of the cover plate. This facilitates the maintenance, repair, and replacement of internal components. The sealing plate at the top of the outer casing engages with the sealing groove of the cover plate, which not only stabilizes the structure but also enhances the sealing performance, preventing dust and moisture from entering and ensuring the stable operation of the testing device.

[0010] As a further description of the above technical solution:

[0011] The cover plate has multiple mounting holes around its outer wall, and each mounting hole has a screw threaded into its inner wall.

[0012] Through the above technical solution, the cover plate serves to protect the internal components of the device. Multiple mounting holes are provided around its outer wall, each connected to a screw via a thread. In this way, the cover plate can be firmly fixed to the outer casing, preventing loosening due to collisions and vibrations during testing. This further ensures the stability and reliability of the testing device, guaranteeing that the testing work is not interfered with.

[0013] As a further description of the above technical solution:

[0014] The top of the outer casing has multiple connection holes around its perimeter, and these connection holes are threadedly connected to multiple screws.

[0015] Through the above technical solution: multiple mounting holes are evenly distributed around the outer wall of the cover plate. At the same time, multiple connection holes are also opened around the top of the outer shell. These connection holes correspond one-to-one with the mounting holes on the cover plate and are all threadedly connected to screws. Through this tight threaded connection method, the cover plate can be firmly fixed to the outer shell.

[0016] As a further description of the above technical solution:

[0017] Two mounting slots are provided on the left and right sides of the outer wall of the outer shell, and handles are fixedly connected to the inner walls of the two mounting slots.

[0018] The above technical solution involves creating two mounting slots on the left and right sides of the outer wall of the casing. Each mounting slot has a handle fixedly connected to its inner wall. The handles are ergonomically positioned, allowing operators to easily grip them. This provides great convenience when carrying the device to different testing locations or adjusting its position during testing.

[0019] As a further description of the above technical solution:

[0020] Two mounting slots are provided on the front and rear sides of the inner wall of the outer casing, and partitions are fixedly connected to the inner walls of the two mounting slots.

[0021] The above technical solution involves two mounting slots on the front and rear sides of the inner wall of the outer casing. The inner wall of the mounting slots is fixedly connected to a partition. The partitions rationally divide the internal space of the outer casing, providing positioning and support for the various internal components and preventing displacement or collision when the device moves or is subjected to vibration, thereby protecting the internal precision parts.

[0022] As a further description of the above technical solution:

[0023] Two mounting grooves are provided on the front and rear sides of the top of the outer wall of the outer shell, and the inner walls of the two mounting grooves are fixedly connected to the bottom of the two connecting plates.

[0024] Through the above technical solution: the inner walls of the two mounting slots three are fixedly connected to the bottom of the two connecting plates one, and the connecting plates one are engaged with the connecting slot two at the bottom of the cover plate. This connection method not only stably supports the connecting plates one, but also makes the connection between the cover plate and the outer shell more reliable, further enhancing the stability of the quick-release mechanism.

[0025] As a further description of the above technical solution:

[0026] The battery compartment has two connecting slots on the left and right sides of the rear end of its inner wall. A protective cover is provided at the bottom of the inner wall of the battery compartment, and the left and right sides of the rear end of the protective cover are engaged with the connecting slots.

[0027] The above technical solution involves two connecting slots on the left and right sides of the rear end of the battery compartment. A protective cover is installed at the bottom of the inner wall, and the left and right sides of the rear end of the protective cover engage with the connecting slots. This design protects the battery inside the battery compartment.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the ultrasonic testing technology is combined with a laser locator and a cross emitter to improve the accuracy of the test. The former uses the stable propagation characteristics of ultrasonic waves to accurately measure the thickness of the floor slab, while the latter assists in determining the test position, reducing human error and improving the reliability of the test results. In terms of ease of use, the snap-fit ​​design of the connection port and the interface and the design of the connecting tube make it easy to install and disassemble the test head. The controller is placed on the top of the cover plate to achieve centralized operation and reduce the difficulty of operation. The quick-release cover plate facilitates the maintenance and repair of internal components and reduces downtime. The battery compartment fixes the battery with spring plates to ensure a stable power supply and ensure that the device operates normally in complex environments.

[0030] 2. In this utility model, the quick assembly and disassembly of the cover plate and the outer shell are achieved by the engagement of the connecting plate one and the connecting groove two, which greatly improves the equipment maintenance efficiency. At the same time, the cooperation between the sealing plate and the sealing groove enhances the sealing performance of the equipment, effectively protects the internal precision components, extends the equipment life, and the engagement structure ensures the stability of the connection, guarantees the safety and stability of the equipment during use, and improves the practicality and reliability of the entire floor slab thickness detection device. Attached Figure Description

[0031] Figure 1 This is a perspective view of a floor slab thickness detection device for engineering testing proposed in this utility model;

[0032] Figure 2 This is a front view of a floor slab thickness detection device for engineering testing proposed in this utility model;

[0033] Figure 3 This is a top view of a floor slab thickness detection device for engineering testing proposed in this utility model;

[0034] Figure 4 This is a partial view of a floor slab thickness detection device for engineering testing proposed in this utility model;

[0035] Figure 5 This is an exploded view of the quick-release mechanism of a floor slab thickness detection device for engineering testing proposed in this utility model;

[0036] Figure 6 This is a schematic diagram of a partial structure of a floor slab thickness detection device for engineering testing proposed in this utility model.

[0037] Legend:

[0038] 1. Outer shell; 2. Quick-release mechanism; 201. Connecting plate one; 202. Connecting groove two; 203. Sealing plate; 204. Sealing groove; 3. Ultrasonic detector; 4. Connecting port; 5. Interlocking interface; 6. Connecting pipe; 7. Detection head; 8. Cover plate; 9. Controller; 10. Mounting hole; 11. Screw one; 12. Connecting hole; 13. Mounting groove one; 14. Handle; 15. Mounting groove two; 16. Partition plate; 17. Mounting groove three; 18. Battery compartment; 19. Spring plate; 20. Connecting groove one; 21. Protective cover; 22. Laser locator; 23. Cross emitter. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] Reference Figure 1 , Figure 3 and Figure 4 An embodiment of this utility model provides a floor slab thickness detection device for engineering testing, comprising a housing 1, an ultrasonic detector 3 fixedly connected to the left side of the inner wall of the housing 1, a connection port 4 fixedly connected to the left rear end of the housing 1, the front end of the connection port 4 fixedly connected to the rear side of the ultrasonic detector 3, a mating interface 5 provided on the outer wall of the connection port 4, the inner wall of the mating interface 5 engaging with the outer wall of the connection port 4, a connecting pipe 6 fixedly connected to the rear end of the outer wall of the mating interface 5, a detection head 7 fixedly connected to the other end of the connecting pipe 6, a laser locator 22 fixedly connected to the right side of the inner wall of the housing 1, a cross emitter 23 fixedly connected to the right rear end of the outer wall of the housing 1, a cover plate 8 provided on the top of the outer wall of the housing 1, a controller 9 fixedly connected to the top of the cover plate 8, a battery compartment 18 opened at the bottom of the housing 1, two spring plates 19 fixedly connected to the left and right sides of the inner wall of the battery compartment 18, and a quick-release mechanism 2 provided on the top of the outer wall of the housing 1.

[0041] Specifically, the outer casing 1 provides protection and support for the entire structure. The ultrasonic detector 3 on the left side of the inner wall detects the thickness of the floor slab based on the principle of ultrasonic reflection. It is connected to the detection head 7 through the connection port 4, the interface 5, and the connecting pipe 6 to ensure stable signal transmission. The laser positioner 22 on the right side of the inner wall and the cross emitter 23 on the right side of the rear of the outer wall use the linear propagation characteristics of light to provide accurate positioning for the detection. The cover plate 8 protects the internal components, while the controller 9 on the top controls the setting of detection parameters and data processing. The spring plate 19 in the battery compartment 18 at the bottom ensures stable power supply from the battery. All components work together to achieve accurate detection of the floor slab thickness with advanced principles and scientific structure, meeting the needs of engineering inspection.

[0042] Reference Figure 4 and Figure 5 The quick-release mechanism 2 includes two connecting plates 201. The bottom of the two connecting plates 201 is fixedly connected to the front top of the outer wall of the outer shell 1. The bottom front and rear sides of the two cover plates 8 are provided with connecting grooves 202. The inner walls of the two connecting grooves 202 are engaged with the outer walls of the two connecting plates 201. The top left and right sides of the outer wall of the outer shell 1 are fixedly connected with two sealing plates 203. The bottom left and right sides of the cover plates 8 are also provided with two sealing grooves 204. The outer walls of the two sealing grooves 204 are engaged with the inner walls of the two sealing plates 203.

[0043] Specifically, the quick-release mechanism 2 achieves efficient installation and disassembly as well as good sealing function. Two connecting plates 201 are fixed to the front top of the outer casing 1, providing a connection base for the installation of the cover plate 8. The two connecting grooves 202 on the front and rear sides of the bottom of the cover plate 8 engage with the connecting plates 201. Utilizing the mechanical engagement principle, the cover plate 8 can be quickly installed and disassembled, improving the convenience of equipment maintenance. The sealing plates 203 on the left and right sides of the top of the outer casing 1 engage with the sealing grooves 204 on the left and right sides of the bottom of the cover plate 8, further enhancing the sealing performance of the device. This design not only ensures that the internal components of the equipment are not disturbed by the external environment during use, but also allows the cover plate 8 to be quickly opened when maintenance and repair of the equipment are required, saving time and labor costs and bringing great convenience to engineering testing work.

[0044] Reference Figure 1 , Figure 2 and Figure 6 The outer wall of the cover plate 8 has multiple mounting holes 10 around its perimeter, and the inner walls of the multiple mounting holes 10 are threaded with screws 11; the top of the outer shell 1 has multiple connecting holes 12 around its perimeter, and the multiple connecting holes 12 are threaded with multiple screws 11; the outer wall of the outer shell 1 has two mounting grooves 13 on its left and right sides, and the inner walls of the two mounting grooves 13 are fixedly connected with handles 14.

[0045] Specifically, multiple mounting holes 10 around the cover plate 8 are threadedly connected to screws 11, using the self-locking principle of the threads to ensure the stability of the cover plate 8. Similarly, multiple connecting holes 12 around the top of the outer shell 1 are threadedly connected to screws 11, tightly connecting the cover plate 8 to the outer shell 1 for easy disassembly and maintenance. The mounting grooves 13 on the left and right sides of the outer wall of the outer shell 1 are respectively fixed to handles 14. The ergonomic design of the handles 14 allows operators to easily move the device, and the fixing method of the handles 14 to the mounting grooves ensures reliability during transportation. These designs not only ensure the stability of the connection between the various components of the device, but also improve its ease of use and maintenance, enabling the testing device to play a better role in engineering testing.

[0046] Reference Figure 1 , Figure 2 and Figure 3 The inner wall of the outer casing 1 has two mounting slots 15 on the front and rear sides of the middle section, and the inner walls of the two mounting slots 15 are fixedly connected to the partitions 16; the outer wall of the outer casing 1 has two mounting slots 17 on the front and rear sides of the top, and the inner walls of the two mounting slots 17 are fixedly connected to the bottom of the two connecting plates 201; the inner wall of the battery compartment 18 has two connecting slots 20 on the left and right sides of the rear end, and the bottom of the inner wall of the battery compartment 18 is provided with a protective cover 21, and the left and right sides of the rear end of the protective cover 21 are engaged with the connecting slots 20.

[0047] Specifically, the mounting groove 15 on the front and rear sides of the middle of the inner wall of the outer casing 1 fixes the partition 16, realizing reasonable division of the internal space, reducing interference between components, and enhancing structural strength. The mounting groove 17 on the front and rear sides of the top of the outer wall of the outer casing 1 fixes the connecting plate 201, providing stable support for the quick-release mechanism 2, so that the cover 8 can be quickly installed and removed. The connecting groove 20 on the left and right sides of the rear end of the inner wall of the battery compartment 18 engages with the protective cover 21, protecting the battery from external impurities and impact, and ensuring stable power supply from the battery. These designs, from internal layout and structural connection to component protection, comprehensively guarantee the performance and stability of the device, and improve the practicality and reliability of the device in engineering testing.

[0048] Working principle: The ultrasonic detector 3 is fixed to the left side of the inner wall of the outer casing 1. Its operation is based on the propagation characteristics of ultrasound. It is connected to the detection head 7 via the connection port 4, interface 5, and connecting pipe 6. During detection, the detection head 7 emits ultrasonic pulses into the floor slab. The ultrasonic waves propagate through the floor slab, reflecting back when they encounter different media interfaces, and are then received by the detection head 7. The ultrasonic detector 3 calculates the thickness of the floor slab based on the time difference between emission and reception, combined with the propagation speed of the ultrasound in the floor slab. The laser positioner 22 is located on the right side of the inner wall of the outer casing 1, and the cross emitter 23 is located on the right rear side of the outer wall of the outer casing 1. The optical locator 22 emits a laser beam, and the cross emitter 23 emits a cross-shaped beam. Utilizing the principle that light travels in a straight line, a light spot and a cross mark are formed on the floor surface to help operators accurately determine the detection position and improve the accuracy and efficiency of the detection. The controller 9 on the top of the cover plate 8 is the control core of the entire device. It can set detection parameters, process the data transmitted from the ultrasonic detector 3, and display the results. The battery compartment 18 is located at the bottom of the outer shell 1. There are two spring plates 19 on each of the left and right sides of the compartment. The spring plates 19 provide elastic pressure to ensure good contact between the battery and the circuit and to provide stable power to the device.

[0049] Furthermore, the two connecting plates 201 in the quick-release mechanism 2 are fixed to the top front side of the outer wall of the outer shell 1, and the connecting grooves 202 on the bottom front and rear sides of the two cover plates 8 engage with the connecting plates 201. The operator only needs to place the cover plate 8 in the appropriate position, align the connecting grooves 202 with the connecting plates 201 and press down to complete the connection between the two, achieving quick installation. The two sealing plates 203 fixed to the top left and right sides of the outer wall of the outer shell 1 cooperate with the two sealing grooves 204 on the bottom left and right sides of the cover plate 8. When the cover plate 8 is installed on the outer shell 1, the sealing grooves 204 will be tightly engaged with the sealing plates 203. This engagement forms a sealing structure. The principle is to use the tight fit between the sealing grooves 204 and the sealing plates 203 to prevent dust, moisture and other external impurities from entering the interior of the outer shell 1.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A floor slab thickness detection device for engineering testing, comprising a housing (1), characterized in that: An ultrasonic detector (3) is fixedly connected to the left side of the inner wall of the outer shell (1). A connection port (4) is fixedly connected to the left rear end of the outer shell (1). The front end of the connection port (4) is fixedly connected to the rear side of the ultrasonic detector (3). A mating interface (5) is provided on the outer wall of the connection port (4). The inner wall of the mating interface (5) engages with the outer wall of the connection port (4). A connecting tube (6) is fixedly connected to the rear end of the outer wall of the mating interface (5). A detection head (7) is fixedly connected to the other end of the connecting tube (6). A laser locator (22) is fixedly connected to the right side of the inner wall of the outer shell (1). A cross emitter (23) is fixedly connected to the right rear side of the outer wall of the outer shell (1). A cover plate (8) is provided on the top of the outer wall of the outer shell (1). A controller (9) is fixedly connected to the top of the cover plate (8). A battery compartment (18) is opened at the bottom of the outer shell (1). Two spring plates (19) are fixedly connected to the left and right sides of the inner wall of the battery compartment (18). A quick-release mechanism (2) is provided on the top of the outer wall of the outer shell (1).

2. The floor thickness detection device for engineering detection according to claim 1, characterized in that: The quick-release mechanism (2) includes two connecting plates (201). The bottom of the two connecting plates (201) is fixedly connected to the front top of the outer wall of the outer shell (1). The bottom front and rear sides of the two cover plates (8) are provided with connecting grooves (202). The inner walls of the two connecting grooves (202) are engaged with the outer walls of the two connecting plates (201). The top left and right sides of the outer wall of the outer shell (1) are fixedly connected with two sealing plates (203). The bottom left and right sides of the cover plate (8) are also provided with two sealing grooves (204). The outer walls of the two sealing grooves (204) are engaged with the inner walls of the two sealing plates (203).

3. The floor thickness detection device for engineering detection according to claim 1, characterized in that: The cover plate (8) has multiple mounting holes (10) around its outer wall, and the inner walls of the multiple mounting holes (10) are threaded with screws (11).

4. The floor slab thickness detection device for engineering testing according to claim 3, characterized in that: The outer casing (1) has multiple connecting holes (12) around its top, and the multiple connecting holes (12) are threadedly connected to the multiple screws (11).

5. The floor slab thickness detection device for engineering testing according to claim 1, characterized in that: Two mounting slots (13) are provided on the left and right sides of the outer wall of the outer shell (1), and handles (14) are fixedly connected to the inner walls of the two mounting slots (13).

6. The floor slab thickness detection device for engineering testing according to claim 1, characterized in that: Two mounting slots (15) are provided on the front and rear sides of the inner wall of the outer shell (1), and partitions (16) are fixedly connected to the inner walls of the two mounting slots (15).

7. The floor slab thickness detection device for engineering testing according to claim 2, characterized in that: The outer wall of the outer shell (1) has two mounting grooves (17) on the front and back sides of the top, and the inner walls of the two mounting grooves (17) are fixedly connected to the bottom of the two connecting plates (201).

8. The floor slab thickness detection device for engineering testing according to claim 1, characterized in that: The battery compartment (18) has two connecting slots (20) on the left and right sides of the rear end of the inner wall. The battery compartment (18) has a protective cover (21) at the bottom of the inner wall. The left and right sides of the rear end of the protective cover (21) are engaged with the connecting slots (20).