A construction engineering construction detection device

Abstract

The utility model relates to construction detection technical field, concretely is a kind of building engineering construction detection device, including mobile robot, lifting assembly and check body, mobile robot is fixedly installed with base body, lifting assembly is fixedly installed on the top of base body, check body is fixedly installed on the bottom of base body and the top of lifting assembly, two The check body structure is same and mutually perpendicular angle installation, two check body follow the path of mobile robot and respectively knock the ground and wall surface and carry out the inspection of hollowing out;Solved the problem of low efficiency and accuracy of the existing artificial detection building hollowing out condition.

Description

Technical Field

[0001] This utility model relates to the field of construction testing technology, specifically a construction testing device for building engineering. Background Technology

[0002] In the construction and acceptance process of building projects, the detection of hollow areas in walls and floors is one of the key steps to ensure construction quality. Hollow areas not only affect the bonding strength and service life of finishing materials, but in severe cases, they can also lead to detachment accidents, posing safety hazards. Therefore, the accuracy, efficiency, and reliability of hollow area detection are of great significance to project quality control.

[0003] Currently, common methods for detecting hollow areas mainly rely on manual operation. Inspectors use tools such as hollow-sound hammers to tap on walls and floors point by point, judging the presence of hollow areas by listening to changes in the sound. While simple to operate, this method requires manual tapping at each point, making it labor-intensive and time-consuming when inspecting large areas or high-rise walls, unsuitable for the short construction cycles and heavy inspection demands of modern buildings. Furthermore, manual tapping is highly dependent on the inspector's experience and auditory sensitivity; different individuals have different standards for sound recognition, easily leading to missed detections or misjudgments, affecting the consistency and accuracy of the inspection. Manual inspection of wall areas is difficult to fully cover, often requiring scaffolding or high-altitude equipment, posing safety risks and being inconvenient to operate.

[0004] Therefore, this utility model provides a construction engineering testing device to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing manual inspection of building hollowness is inefficient and inaccurate.

[0006] This utility model provides the following technical solution: a construction inspection device for building engineering, including a mobile robot, a lifting component and an inspection body. A base is fixedly installed inside the mobile robot, and a lifting component is fixedly installed above the base. Inspection bodies are fixedly installed at the bottom of the base and above the lifting component. The two inspection bodies have the same structure and are installed at a perpendicular angle to each other. The two inspection bodies follow the path of the mobile robot to tap the ground and the wall to check for hollow spots.

[0007] The lifting assembly includes a base frame, a drive unit, a scissor lift body, and an upper frame. The base frame is fixedly installed on the top of the base, the drive unit and the scissor lift body are installed inside the base frame, and the upper frame is installed above the scissor lift body.

[0008] The scissor lift includes multiple scissor bodies that are connected end to end and hinged together. Each scissor body is an X-shaped structure formed by two rods hinged together in the middle. The uppermost and lowermost scissor bodies are provided with hinge rods and lifting sliding rods. The surfaces of the base frame and the upper frame are respectively provided with sliding grooves and hinge points. The hinge rods are slidably installed in the sliding grooves and hingedly installed at the hinge points.

[0009] The driving component includes a drive motor, a lead screw, and a slider. The drive motor is fixedly mounted on the base frame. The lead screw is hinged to the end of the drive motor. The slider is slidably mounted on the surface of the lead screw. Lifting sliding rods are hinged to both sides of the slider.

[0010] The inspection body includes a striking drive body, a disc body, a connecting rod, a striking sliding rod, and a striking hammer. The striking drive body is fixedly installed on the bottom of the mobile robot and above the lifting assembly. The disc body is fixedly installed at the end of the striking drive body. The connecting rod is hinged to the side of the disc body away from the drive body. The bracket is fixedly installed on the bottom of the mobile robot and above the lifting assembly. The striking sliding rod is slidably installed in the bracket. The connecting rod and the striking sliding rod are hinged together. The striking hammer is fixedly installed at the other end of the striking sliding rod.

[0011] An acoustic analyzer is fixedly installed on the bottom and sides of the upper frame of the mobile robot.

[0012] The tapping sliding rod includes a rear rod, a front rod, a ring body, an end cap, and an elastic body. The front rod is slidably installed inside the rear rod. The ring body is installed on the surface of the rear rod. The end cap is fixedly installed on the surface of the front rod. An elastic body is fixedly installed between the threaded ring body and the end cap.

[0013] The rear rod surface and the ring body are connected by threads.

[0014] The beneficial effects of this utility model are as follows: 1. This utility model, through the cooperation of a mobile robot, an inspection body, a lifting assembly, and an acoustic analyzer, can automatically inspect the hollowness of building walls and floors, thereby improving detection efficiency and eliminating subjective errors, which is conducive to improving detection accuracy.

[0015] 2. In this utility model, during the process of the tapping sliding rod driving the tapping hammer to reciprocate and tap the building, the elastic support of the elastic body makes the force of each tap automatically stable and reduces subjective error. At the same time, it can also avoid excessive rigid tapping force that damages the building surface, which is conducive to improving the protective performance. Furthermore, the threaded installation between the rear rod surface and the ring body can also change its installation position by twisting. Thus, when facing different building inspection positions, the ring body can be actively twisted to adjust the end position of the elastic body, thereby adjusting the elastic support force on the tapping hammer. In this way, the tapping force can be flexibly adjusted for different building materials to avoid damaging the building. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a front sectional view of the present invention; Figure 3 This utility model Figure 2 A magnified schematic diagram of the examination subject at point A in the middle; Figure 4 This is a top view of the lifting assembly and inspection body of this utility model; Figure 5 This is a schematic diagram of the overall structure of the lifting component of this utility model; Figure 6 This is a front view schematic diagram of the striking sliding rod and striking hammer of this utility model.

[0018] In the diagram: 1. Mobile robot; 11. Base; 2. Lifting assembly; 21. Base frame; 22. Drive unit; 221. Drive motor; 222. Lead screw; 223. Sliding body; 23. Scissor lift body; 231. Scissor lift body; 232. Hinge rod; 233. Lifting sliding rod; 234. Slide groove; 235. Hinge point; 24. Upper frame; 25. Cover plate; 3. Inspection body; 31. Striking drive body; 32. Disc; 33. Connecting rod; 34. Support; 35. Striking sliding rod; 351. Rear rod; 352. Front rod; 353. Ring body; 354. End cap; 355. Elastomer; 36. Striking hammer; 4. Acoustic analyzer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0022] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In view of the low efficiency and accuracy of existing manual inspection methods for detecting hollow areas in buildings, this disclosure provides a construction inspection device for building engineering. Example

[0024] A construction inspection device for building engineering includes a mobile robot 1, an inspection body 3, and a lifting assembly 2. A base 11 is fixedly installed inside the mobile robot 1, and the lifting assembly 2 is fixedly installed above the base 11. Inspection bodies 3 are fixedly installed at the bottom of the base 11 and above the lifting assembly 2. The two inspection bodies 3 have the same structure and are installed at a perpendicular angle to each other. The two inspection bodies 3 follow the path of the mobile robot 1 to tap the ground and the wall to check for hollow spots.

[0025] The two inspection bodies 3 are installed at a perpendicular angle to each other, facing the ground and wall respectively, thus enabling separate inspection of the building's floor and wall surfaces for hollow areas. Therefore, attached... Figure 2 The two structures of the inspection body 3 described herein can corroborate each other.

[0026] After the completion of one process and before the start of the next, as well as during project acceptance, it is necessary to inspect the building for hollow areas in order to avoid safety impacts and ensure project quality. Using a mobile robot 1 to move the inspection body 3 to check for hollow areas on the building surface improves inspection efficiency, eliminates subjective errors, and enhances inspection accuracy.

[0027] The lifting assembly 2 includes a base frame 21, a drive unit 22, a scissor lift body 23, and an upper frame 24. The base frame 21 is fixedly installed on the top of the base 11. The drive unit 22 and the scissor lift body 23 are installed inside the base frame 21. The upper frame 24 is installed above the scissor lift body 23.

[0028] It should be noted that the mobile robot 1 is any existing robot capable of automatic movement and walking, which is a mature technology and will not be elaborated on here.

[0029] When detecting hollow spots in the wall, the drive unit is activated and the scissor lift 23 is raised and lowered, which in turn raises and lowers the upper frame 24 and the inspection body 3 above the upper frame 24, thereby inspecting the hollow spots in the wall.

[0030] The scissor lift body 23 includes multiple scissor bodies 231 that are connected end to end and hinged together. Each scissor body 231 is an X-shaped structure formed by two rods hinged together in the middle. The uppermost and lowermost scissor bodies 231 are provided with hinge rods 232 and lifting sliding rods 233. The surfaces of the base frame 21 and the upper frame 24 are respectively provided with sliding grooves 234 and hinge points 235. The hinge rods 232 are slidably installed in the sliding grooves 234 and hingedly installed at the hinge points 235.

[0031] After the drive unit is started, it drives the lifting sliding rod 233 to move in the slide groove 234. The movement of the lifting sliding rod 233 in the slide groove 234 causes the two rods of the scissor body 231 to swing along the central hinge point 235, thereby driving the upper frame 24 to rise and fall.

[0032] It should be noted that the scissor lift body 23 in this embodiment can also be replaced by other existing lifting structures, such as hydraulic rods.

[0033] The driving component 22 includes a drive motor 221, a lead screw 222, and a slide body 223. The drive motor 221 is fixedly installed on the base frame 21. The lead screw 222 is hinged to the end of the drive motor 221. The lead screw 222 is rotatably installed above the base frame 21. The slide body 223 is slidably installed on the surface of the lead screw 222. Lifting sliding rods 233 are respectively hinged to both sides of the slide body 223.

[0034] The drive motor 221 is started to drive the lead screw 222 to rotate. The rotation of the lead screw 222 causes the slide body 223 to slide back and forth on the surface of the lead screw 222. The back and forth sliding of the slide body 223 causes the lifting sliding rod 233 to move back and forth in the slide groove 234, thereby driving the scissor lift 231 to rise and fall.

[0035] It should be noted that a cover plate 25 is detachably installed on the top of the mobile robot 1 and above the lifting assembly 2 to prevent dust accumulation when not in use. This cover plate 25 can be fixed in any readily available way, such as magnetic or snap-fit ​​installation. Alternatively, the cover plate 25 can simply be snapped onto the top of the mobile robot 1 without being secured.

[0036] The inspection body 3 includes a striking drive body 31, a disc body 32, a connecting rod 33, a striking sliding rod 35, and a striking hammer 36. The striking drive body 31 is fixedly installed at the bottom of the base 11 and above the lifting assembly 2. The disc body 32 is fixedly installed at the end of the striking drive body 31. The connecting rod 33 is hinged to the side of the disc body 32 away from the drive body. The bracket 34 is fixedly installed at the bottom of the base 11 and the side of the lifting assembly 2. The striking sliding rod 35 is slidably installed in the bracket 34. The connecting rod 33 and the striking sliding rod 35 are hinged together. The striking hammer 36 is fixedly installed at the other end of the striking sliding rod 35.

[0037] The striking drive 31 can be an existing motor, or any other structure or device capable of moving the disc 32.

[0038] The start-up of the striking drive 31 drives the disc 32 to rotate. The rotation of the disc 32 drives one end of the connecting rod 33 to rotate and uses the other end of the connecting rod 33 to reciprocate to pull the striking sliding rod 35 to move linearly back and forth within the bracket 34. The reciprocating movement of the striking sliding rod 35 drives the striking hammer 36 to strike, and the sound produced by the striking hammer 36 is used to determine the hollowness of the building.

[0039] It should be noted that a vertical wall is fixedly installed above the upper frame 24 and below the base plate. A rotating shaft is rotatably installed inside the vertical wall, and a striking drive 31 and a disc 32 are fixedly installed at both ends of the rotating shaft, respectively. Alternatively, other existing structures can be used to install the disc 32, thereby improving the stability of the disc 32 during use.

[0040] It should be noted that in the inspection body 3 installed at the bottom of the substrate, the striking drive body 31 is fixedly installed below the substrate and located on one side of the vertical wall, while the disc body 32 is located on the side of the vertical wall away from the striking drive body 31.

[0041] It should be noted that in this embodiment, the determination of whether a building is hollow is mainly based on the human ear listening to the sound of knocking.

[0042] It should be noted that the striking drive body 31 uses an existing type of motor. In addition, any structure or device that drives rotation can be used, which will not be elaborated on here.

[0043] The hammer 36 can be an existing hollow hammer 36, for example, by embedding rubber material in front of the metal hammer head to avoid leaving damage or scratches on the building surface.

[0044] Example 2: Based on Example 1 above, this embodiment only records the differences, and the similarities will not be repeated.

[0045] An acoustic analyzer 4 is fixedly installed on the bottom of the mobile robot 1 and the side of the upper frame 24. It can also be fixedly installed on the surface of the support 34. The acoustic analyzer 4 allows for judgment based on fixed data standards, which helps avoid subjective interference from personnel; furthermore, the acoustic analyzer 4 can capture subtle sound differences that are inaudible to the human ear, accurately locating the size and depth of voids, avoiding potential missed detections.

[0046] After the building is struck by the inspection unit 3 and a sound is produced, the sound is analyzed and compared using an acoustic analyzer 4 to determine whether the building is hollow. The acoustic analyzer 4, which is fixedly installed on the bottom of the mobile robot 1, the side of the upper frame 24, or the surface of the bracket 34, can get closer to the striking point, thus receiving and analyzing the sound more effectively.

[0047] It should be noted that the knocking sound in the hollow area has a higher frequency and decays faster, with a sharp and short waveform, corresponding to the thumping sound heard by the human ear. The knocking sound in the normal area has a lower frequency and more concentrated energy, with a smooth and continuous waveform, corresponding to the banging sound heard by the human ear.

[0048] The principle behind the acoustic analyzer 4's analysis of whether a sound is hollow is based on existing mature technology, and will not be elaborated in detail. For example, it uses Fourier Transform (FFT) to convert the time-domain signal into a frequency-domain spectrum to identify the characteristic frequencies of hollow sounds. Then, it uses Mel-frequency cepstral coefficients (MFCC) to simulate the characteristics of human hearing, converting linear frequencies into Mel scales to extract the features most sensitive to sound perception. Next, it uses LPCC to extract formant parameters through linear predictive coding, further refining the spectral envelope features. Then, it uses bandpass filters (e.g., 40-400Hz) to eliminate environmental noise such as construction machinery noise, combined with a Kalman filter algorithm to dynamically adjust the noise threshold. Finally, it uses a Gaussian mixture model (GMM) to estimate the probability density of the MFCC features, fits a multi-peak distribution using the EM algorithm, distinguishes between hollow and non-hollow sounds, and uses a convolutional neural network (CNN) to construct multiple convolutional layers to automatically extract deep features.

[0049] The tapping sliding rod 35 includes a rear rod 351, a front rod 352, a ring 353, an end cap 354, and an elastic body 355. The front rod 352 is slidably installed inside the rear rod 351. The ring 353 is installed on the surface of the rear rod 351. The end cap 354 is fixedly installed on the surface of the front rod 352. The elastic body 355 is fixedly installed between the threaded ring 353 and the end cap 354.

[0050] It should be noted that the elastomer 355 can be any existing elastic structure or device, such as a conventional spring or airbag. In the embodiments of this disclosure, the elastomer 355 is an existing compression spring.

[0051] It should be noted that, in this embodiment of the present disclosure, a ring 353 is fixedly installed on the surface of the rear rod 351, and the front rod 352 can be lifted by the ring 353, the end cap 354 and the elastic body 355.

[0052] During the process of the connecting rod 33 driving the striking sliding rod 35 to reciprocate and strike the building, when the striking hammer 36 contacts the building, the striking hammer 36 drives the front rod 352 to slide in the rear rod 351 and squeezes the elastic body 355 through the ring body 353 and the end cap 354. Thus, on the one hand, the elastic support of the elastic body 355 makes the force of each strike automatically stable, reducing subjective error. On the other hand, it can also avoid excessive rigid striking force from damaging the building surface, which is beneficial to improving the protective performance.

[0053] Example 3: Based on Example 2 above, this embodiment only records the differences, and the similarities will not be repeated.

[0054] The rear rod 351 and the ring 353 are connected by threads.

[0055] The threaded ring 353 can change its installation position by twisting, so that when facing different building inspection positions, it can actively twist the ring 353 to adjust the end position of the elastic body 355, thereby adjusting the elastic support force on the hammer 36, and thus flexibly adjust the hammering force for different building materials to avoid damaging the building.

[0056] It should be noted that the ring 353 in this embodiment can be installed using a triangular thread, a fine thread, or a self-locking thread, thereby improving its self-locking performance and preventing the ring 353 from loosening during hammering. In addition, any other structure or device that causes displacement can be installed using reverse-threaded mounting, such as locking washers or stop washers like double-eared or single-eared stop washers. After installation, the ears of the washer are bent into the groove of the nut or the connected part, physically limiting the nut's rotation; or anti-loosening steel wire, which passes through the head holes of multiple bolts and winds them in a specific order, preventing the bolts from loosening individually; or an elastic nut, with an elastic material such as rubber or nylon ring embedded inside, which is compressed during tightening, filling the thread gap and generating friction.

[0057] The process for checking for hollow areas in buildings according to this embodiment is as follows: After the completion of a process and before the start of the next process, as well as during project acceptance, it is necessary to check for hollow areas in the building to avoid safety impacts and ensure project quality. When checking for hollow areas in the building's walls, the mobile robot 1 approaches and moves towards the wall. Simultaneously, the drive motor 221 is activated, causing the lead screw 222 to rotate. The rotation of the lead screw 222 causes the sliding body 223 to reciprocate on the surface of the lead screw 222. The reciprocating sliding of the sliding body 223 causes the lifting sliding rod 233 to reciprocate within the sliding groove 234. The movement of the lifting sliding rod 233 within the sliding groove 234 causes the two rods of the scissor lift 231 to swing along the central hinge point 235, thereby driving the upper frame 24 to rise and fall.

[0058] After the upper frame 24 rises to a predetermined height using the lifting drive and scissor lift 23, the striking drive 31 in the inspection body 3 is activated to drive the disc 32 to rotate. The rotation of the disc 32 causes one end of the connecting rod 33 to rotate and the other end of the connecting rod 33 to reciprocate to pull the striking sliding rod 35 linearly back and forth within the support 34. The reciprocating movement of the striking sliding rod 35 drives the striking hammer 36 to strike, thereby cooperating with the acoustic analyzer 4 to determine the hollowness of the building wall based on the sound emitted by the striking hammer 36.

[0059] When detecting hollow areas on the ground, the striking drive 31 in the inspection body 3 is activated and drives the disc 32 to rotate. The rotation of the disc 32 drives one end of the connecting rod 33 to rotate and uses the other end of the connecting rod 33 to reciprocate and pull the striking sliding rod 35 to move linearly back and forth within the support 34. The reciprocating movement of the striking sliding rod 35 drives the striking hammer 36 to strike, thereby cooperating with the acoustic analyzer 4 to judge the hollow area of ​​the building ground based on the sound emitted by the striking hammer 36.

[0060] By cooperating with the inspection body 3 and the lifting assembly 2, it is convenient to inspect the hollowness of the walls and floors. It can automatically detect the hollowness of the building, thereby improving the inspection efficiency and eliminating subjective errors, which is conducive to improving the inspection accuracy.

[0061] During the process of connecting rod 33 driving the tapping sliding rod 35 and tapping hammer 36 to check for hollow areas in the building, the tapping hammer 36 drives the front rod 352 to slide within the rear rod 351 and compresses the elastic body 355 through the ring body 353 and end cap 354. This, on the one hand, utilizes the elastic support of the elastic body 355 to automatically stabilize the force of each tap, reducing subjective errors; on the other hand, it avoids excessive rigid tapping force that could damage the building surface, thus improving protective performance. Furthermore, the rear rod 351 and the ring body 353 are connected by threads, allowing the ring body 353 to be actively turned to adjust the end position of the elastic body 355 when facing different building inspection locations. This adjusts the elastic support force on the tapping hammer 36, enabling flexible adjustment of the tapping force for different building materials and preventing damage to the building.

[0062] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A construction inspection device for building engineering, comprising a mobile robot (1), a lifting assembly (2), and an inspection body (3), characterized in that: The mobile robot (1) has a base (11) fixedly installed inside it. A lifting assembly (2) is fixedly installed above the base (11). Inspection bodies (3) are fixedly installed at the bottom of the base (11) and above the lifting assembly (2). The two inspection bodies (3) have the same structure and are installed at a perpendicular angle to each other. The two inspection bodies (3) follow the path of the mobile robot (1) to knock on the ground and the wall to check for hollowness.

2. The construction inspection device for building engineering according to claim 1, characterized in that: The lifting assembly (2) includes a base frame (21), a drive unit (22), a scissor lift body (23), and an upper frame (24). The base frame (21) is fixedly installed on the top of the base (11). The drive unit (22) and the scissor lift body (23) are installed inside the base frame (21). The upper frame (24) is installed above the scissor lift body (23).

3. The construction inspection device for building engineering according to claim 2, characterized in that: The scissor lift body (23) includes multiple scissor bodies (231) that are connected end to end and hinged together. Each scissor body (231) is an X-shaped structure formed by two rods hinged together in the middle. The uppermost and lowermost scissor bodies (231) are provided with hinge rods (232) and lifting sliding rods (233). The surfaces of the base frame (21) and the upper frame (24) are respectively provided with sliding grooves (234) and hinge points (235). The hinge rods (232) are slidably installed in the sliding grooves (234) and hingedly installed at the hinge points (235).

4. The construction inspection device for building engineering according to claim 3, characterized in that: The driving component (22) includes a drive motor (221), a lead screw (222) and a slide body (223). The drive motor (221) is fixedly installed on the base frame. The lead screw (222) is hinged to the end of the drive motor (221). The slide body (223) is slidably installed on the surface of the lead screw (222). Lifting sliding rods (233) are hinged to both sides of the slide body (223).

5. A construction inspection device for building engineering according to claim 4, characterized in that: The inspection body (3) includes a striking drive body (31), a disc body (32), a connecting rod (33), a striking sliding rod (35), and a striking hammer (36). The striking drive body (31) is fixedly installed on the bottom of the mobile robot (1) and above the lifting assembly (2). The disc body (32) is fixedly installed at the end of the striking drive body (31). The connecting rod (33) is hinged to the side of the disc body (32) away from the drive body. The support (34) is fixedly installed on the bottom of the mobile robot (1) and above the lifting assembly (2). The striking sliding rod (35) is slidably installed in the support (34). The connecting rod (33) and the striking sliding rod (35) are hinged together. The striking hammer (36) is fixedly installed at the other end of the striking sliding rod (35).

6. A construction inspection device for building engineering according to claim 5, characterized in that: An acoustic analyzer (4) is fixedly installed on the bottom and the side of the upper frame (24) of the mobile robot (1).

7. A construction inspection device for building engineering according to claim 6, characterized in that: The tapping sliding rod (35) includes a rear rod (351), a front rod (352), a ring (353), an end cap (354), and an elastic body (355). The front rod (352) is slidably installed inside the rear rod (351). The ring (353) is installed on the surface of the rear rod (351). The end cap (354) is fixedly installed on the surface of the front rod (352). The elastic body (355) is fixedly installed between the threaded ring (353) and the end cap (354).

8. A construction inspection device for building engineering according to claim 7, characterized in that: The rear rod (351) surface and the ring (353) are connected by threads.

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