A wall sampling device for quality inspection of building engineering

Abstract

This invention discloses a wall sampling device for building construction quality inspection, comprising a drill cylinder. One end of the drill cylinder is provided with a drive component that provides power for its rotation. The drive component includes a motor and a control component. One side of the drill cylinder is provided with an alignment component that calibrates the rotation direction of the drill cylinder. Inside the drill cylinder is an impact component that pushes the sampled wall inside to the outside. In this wall sampling device for building construction quality inspection, by setting up the drive component and the impact component, the impact hammer located inside the drill cylinder continuously and repeatedly hammers the blockage, further increasing the efficiency of clearing the blockage and making it easier to remove the sampled wall, so that the inspection period meets the standards.

Description

Technical Field

[0001] This invention relates to the field of building construction testing technology, specifically a wall sampling device for testing the quality of building engineering projects. Background Technology

[0002] Construction engineering refers to the physical engineering project formed by the construction of various types of buildings and their ancillary facilities, as well as the installation of supporting lines, pipelines, and equipment. Among them, "buildings" refer to projects with roofs, beams, columns, walls, foundations, and the ability to form internal spaces to meet people's needs for production, living, learning, and public activities.

[0003] Currently, during the construction of houses, it is usually necessary for inspectors to test the quality of the walls of the house, take out wall samples for testing, and the taken wall samples must undergo a qualified compressive strength test. For bricks that are designed to be frost-resistant, efflorescence-resistant, and lime-bursting resistant, such tests should be conducted. The most common sampling tool currently available is a wall core drill, also known as a drilling machine. When sampling walls, the drill barrel at the front of the core drill needs to be placed against the wall surface and drilled vertically. Once a sufficient length has been drilled, the wall sample inside the drill barrel is retrieved. However, when sampling walls that are thick and of poor quality, the drill barrel needs to penetrate a considerable distance into the wall. Due to the poor quality of the wall and the insufficient compactness of the internal concrete structure, some small brick and stone fragments may enter between the drill barrel and the sampled wall during drilling, potentially causing blockage of the sample inside the drill barrel. This makes retrieving the sample difficult and affects the wall quality inspection process. Therefore, we propose a wall sampling device for building engineering quality inspection. Summary of the Invention

[0004] The purpose of this invention is to provide a wall sampling device for quality inspection of building engineering, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wall sampling device for quality inspection of building engineering, comprising a drill cylinder, one end of which is provided with a driving component that provides power for its rotation, the driving component including a motor and a control component, one side of which is provided with an alignment component for calibrating the rotation direction of the drill cylinder, and the inside of the drill cylinder is provided with an impact component for pushing the sampled wall inside to the outside.

[0006] Preferably, the impact assembly includes an impact hammer located inside the cylinder, the impact hammer itself being elastic, a sliding column at one end of the impact hammer, a fixed box outside the sliding column, the outer wall of the fixed box being fixedly connected to the inner wall of the drill cylinder, a ratchet on the outer wall of the sliding column, a limiting plate on the outer wall of the ratchet abutting against its teeth, a fixed shaft inside the limiting plate, one end of the fixed shaft being fixedly connected to the fixed box, and a torsion spring between the fixed shaft and the limiting plate, the spring force of the torsion spring in the normal state rotating one end of the limiting plate until it contacts the inner wall of the ratchet teeth.

[0007] Preferably, the cylinder body is provided with a driving assembly for driving the sliding column to slide inside the fixed box. The driving assembly includes a connecting plate one located at one end of the sliding column, a stop block on one side of the connecting plate one, a rotating block in contact with the surface of the stop block above the stop block, a connecting plate two on one side of the rotating block, a square tube on one side of the connecting plate two, an insert block inside the square tube, a connecting shaft at one end of the insert block, a coupling at one end of the connecting shaft, and the coupling is located outside the motor shaft and fixedly connected to it.

[0008] Preferably, a lubrication assembly is provided on one side of the ratchet to increase the lubrication of the inner wall of the drill barrel. The lubrication assembly includes a connecting post located on one side of the ratchet. One end of the connecting post is provided with an annular plate. The outer wall of the annular plate is in contact with the inner wall of the fixing box. The surface of the fixing box is provided with multiple through holes. Each of the multiple through holes is provided with a one-way film. The surface of the fixing box is also provided with an oil injection hole. The oil injection hole is provided with a plug.

[0009] Preferably, the connecting shaft is provided with a bushing on the outside, a limiting hole one inside the connecting shaft, and a limiting hole two inside the connecting shaft with the same diameter as the limiting hole one. A fixing rod that passes through the bushing and the connecting shaft is provided inside the limiting hole one.

[0010] Preferably, the outer wall of the impact hammer is provided with an annular sleeve, and one side of the annular sleeve is provided with a stop plate. The annular sleeve includes a beveled part, and the outer wall of the beveled part is in contact with the inner wall of the drill barrel.

[0011] Preferably, the surface of the second connecting plate is provided with a counterweight, the weight of which is greater than the sum of the weights of the second connecting plate and the rotating block.

[0012] Preferably, the outer wall of the drill barrel is provided with a water tank, the inside of the water tank is provided with an impeller, the inner wall of the impeller is fixedly connected to the outer wall of the drill barrel, the surface of the water tank is provided with multiple water outlets, and a divergence box is provided on one side of each of the multiple water outlets, the overall shape of the divergence box is an outwardly expanding frustum.

[0013] Preferably, one end of the blocking block is shaped as an arc surface, the contact area between the rotating block and the blocking block is shaped as an arc surface, the rotating block has an inner rod inside, one end of the inner rod has a spring, the spring has an outer cylinder outside, and one end of the outer cylinder is rotatably connected to the connecting plate.

[0014] Preferably, the end of the insert is pointed, and when the insert is located inside the square tube, the outer wall of the insert is in contact with the inner wall of the square tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. In this invention, by providing a driving component and an impact component, after the insert block is slid into the square tube, the motor will drive the rotating plate to rotate. The arc surface of the rotating plate will abut against the arc surface of the blocking block. Under the continuous abutment, the sliding column will slide downward with the blocking block inside the fixed box, thereby driving the impact hammer at one end of the sliding column to impact the blockage inside the drill barrel. It is worth noting that when the rotating block and the blocking block abut against each other, the thrust generated may cause the sliding column to rotate inside the fixed box. However, due to the special limiting relationship between the ratchet and the limiting plate, the rotation may be affected. This system ensures that the sliding column can only slide linearly inside the fixed box, rather than rotate. Simultaneously, as the stop block moves the sliding column inside the fixed box, the spring inside the outer cylinder is stretched. When the stop block slides to a point where it is separated from the single inclined area of ​​the rotating block, the spring force pulls the sliding column back to its initial position, and it contacts the curved area of ​​the rotating block again. This reciprocating motion allows the impact hammer inside the drill barrel to continuously and repeatedly hammer the blockage, further increasing the efficiency of clearing the blockage and making it easier to remove the sampling wall, ensuring the inspection period meets standards.

[0017] 2. In this invention, by providing a lubrication component, during the sliding of the sliding column inside the fixed box, the ratchet will drive the connecting column to push the annular plate to slide inside the fixed box, thereby causing the internal space of the fixed box to contract, so that the lubricating oil inside flows out from the one-way film to the inner wall of the drill barrel. The lubricating oil will eventually flow between the blockage and the drill barrel, thereby reducing the friction between the blockage wall and the inner wall of the drill barrel, making it easier for the impact hammer to discharge the blockage wall from the drill barrel, and thus facilitating the removal of the blockage inside the drill barrel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the drill barrel structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of the structure of region A in the middle;

[0021] Figure 4 This is a partial structural cross-sectional view of the present invention;

[0022] Figure 5 For the present invention Figure 4 Enlarged view of the structure of region B in the middle;

[0023] Figure 6 This is a partial structural cross-sectional view of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged view of the structure of region C in the middle;

[0025] Figure 8 For the present invention Figure 6 Enlarged view of the structure of region D in the middle;

[0026] Figure 9 For the present invention Figure 6 Enlarged view of the structure of region E in the middle.

[0027] In the diagram: 1-Drill barrel; 2-Driver; 21-Motor; 22-Control unit; 3-Alignment component; 4-Impact assembly; 41-Impact hammer; 42-Sliding column; 43-Fixing box; 44-Ratchet; 45-Limit plate; 46-Fixing shaft; 47-Torsion spring; 5-Drive assembly; 51-Connecting plate one; 52-Blocking block; 53-Rotating block; 54-Connecting plate two; 55-Square tube; 56-Insertion block; 57-Connecting shaft; 58-Coupling ; 6-Lubrication component; 61-Connecting column; 62-Annular plate; 63-Through hole; 64-One-way diaphragm; 65-Oil injection hole; 66-Plug; 7-Shaft sleeve; 8-Limiting hole one; 9-Limiting hole two; 10-Fixing rod; 11-Annular sleeve; 111-Beveled part; 12-Blocking plate; 13-Counterweight; 14-Water tank; 15-Impeller; 16-Outlet; 17-Diffusion box; 18-Inner rod; 19-Spring; 20-Outer cylinder. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-9This invention provides a technical solution: a wall sampling device for building construction quality inspection. This solution solves the problem that during the drilling process of existing drill barrels 1, some small brick and stone fragments may enter between the inner wall of the drill barrel 1 and the sampling wall, potentially causing blockage of the sample inside the drill barrel 1. This makes removing the sample from the wall difficult and affects the quality inspection process. This solution addresses the above problems by making corresponding improvements, including a drill barrel 1, one end of which is equipped with a drive component 2 that provides power for its rotation. The drive component 2 includes a motor 21 and a control component 22. One side of the drill barrel 1 is provided with an alignment member 3 to calibrate the rotation direction of the drill barrel 1. These are all technical means that can be implemented in the prior art. When the operator is sampling the wall, the end of the alignment member 3 can be used to block the wall surface, so that the drill barrel 1 is perpendicular to the wall during drilling. The drive member 2 and the control member 22 cooperate to drive the drill barrel 1 to rotate via the rotating shaft. Inside the drill barrel 1 is an impact assembly 4 that pushes the sampled wall material inside to the outside. In this solution, the impact assembly 4 includes an impact hammer 41 located inside the barrel. The impact hammer 41 is elastic. One end of the impact hammer 41 is provided with a sliding post 42 and fixedly connected to it. A fixing box 43 is provided outside the sliding post 42. The sliding post 42 and the fixing box 43 are slidably connected. The outer wall of the fixing box 43 is fixedly connected to the inner wall of the drill barrel 1. An annular sleeve 11 is provided on the outer wall of the impact hammer 41. The annular sleeve 11 is slidably connected to the impact hammer 41 and can rotate on the outer wall of the impact hammer 41. A stop plate 12 is provided on one side of the annular sleeve 11 and is fixedly connected to the impact hammer 41. The annular sleeve 11 includes a beveled part 111. The outer side of the beveled part 111... The wall is in contact with the inner wall of the drill barrel 1. The outer wall of the sliding column 42 is provided with a ratchet 44 and is fixedly connected to it. The outer wall of the ratchet 44 is provided with a limiting plate 45 that abuts against its toothed blocks. The inside of the limiting plate 45 is provided with a fixed shaft 46 and is rotatably connected to it. One end of the fixed shaft 46 is fixedly connected to the fixed box 43. A torsion spring 47 is provided between the fixed shaft 46 and the limiting plate 45. The two ends of the torsion spring 47 are fixedly connected to the fixed shaft 46 and the limiting plate 45 respectively. Under normal conditions, the elastic force of the torsion spring 47 rotates one end of the limiting plate 45 to contact the inner wall of the toothed blocks of the ratchet 44.

[0030] When the impact hammer 41 slides inside the fixed box 43, the end of the impact hammer 41 will first abut against the sampling wall blocked inside the drill barrel 1. Due to the elasticity of the impact hammer 41 itself, the end of the impact hammer 41 will be compressed backward a short distance, so that the inclined surface 111 at the end of the annular sleeve 11 abuts against the outer edge of the blockage. Due to the inclined surface effect of the inclined surface 111, the annular sleeve 11 will rotate during this process. The inclined surface 111 will then push away any gravel that may exist between the blockage and the drill barrel 1. This, combined with the impact of the impact hammer 41 on the blockage, makes it easier for the blockage wall to fall out of the drill barrel 1, making the sampling process more convenient.

[0031] Furthermore, the cylinder body is equipped with a drive assembly 5 for driving the sliding column 42 to slide within the fixed box 43. The drive assembly 5 includes a connecting plate 51 located at one end of the sliding column 42. One side of the connecting plate 51 is fixedly connected to the sliding column 42. A stop block 52 is provided on one side of the connecting plate 51 and fixedly connected thereto. A rotating block 53 is provided above the stop block 52 and in contact with its surface. One end of the stop block 52 is shaped as an arc surface. The contact area between the rotating block 53 and the stop block 52 is shaped as an arc surface. An inner rod 18 is provided inside the rotating block 53. One end of the inner rod 18 is rotatably connected to the rotating block 53. A spring 19 is provided at one end of the inner rod 18, and an outer cylinder 20 is provided outside the spring 19. The two ends of the spring 19 are fixedly connected to the outer cylinder 20 and the inner rod 18, respectively. One end of the outer cylinder 20 is rotatably connected to the connecting plate 1 51. A connecting plate 2 54 is provided on one side of the rotating block 53 and is fixedly connected thereto. A counterweight 13 is provided on the surface of the connecting plate 2 54, and one side of the counterweight 13 is fixedly connected to the connecting plate 2 54. The weight of the counterweight 13 is greater than the sum of the weights of the connecting plate 2 54 and the rotating block 53. The weight of the counterweight 13 can make... During the rotation of the drill barrel 1, the connecting plate 54 inside the drill barrel 1 remains relatively stationary. A square tube 55 is fixedly connected to one side of the connecting plate 54. An insert block 56 is located inside the square tube 55, with a sharp end. When the insert block 56 is inside the square tube 55, its outer wall contacts the inner wall of the square tube 55. The sharp end of the insert block 56 allows it to easily enter the square tube 55 at any rotation angle, ultimately driving the square tube 55 to rotate. A connecting shaft 5 is located at one end of the insert block 56. 7. A coupling 58 is provided at one end of the connecting shaft 57 and is fixedly connected to it. The coupling 58 is located outside the rotating shaft of the motor 21 and is fixedly connected to it. A bushing 7 is provided outside the connecting shaft 57. One end of the bushing 7 is fixedly connected to the drill barrel 1. A limiting hole 8 is provided inside the connecting shaft 57. A limiting hole 9 with the same diameter as the limiting hole 8 is also provided inside the connecting shaft 57. A fixing rod 10 that passes through the bushing 7 and the connecting shaft 57 is provided inside the limiting hole 8. The fixing rod 10 is fixedly connected to the connecting shaft 57 and can be disassembled at any time.

[0032] Under normal sampling conditions, the operator can insert the fixing rod 10 into the bushing 7 and the limiting hole 8. Due to the limiting effect between the insert block 56 and the bushing 7, the motor 21 inside the drive component 2 will only drive the drill barrel 1 to rotate. During this rotation, the fixing box 43 will rotate together with the drill barrel 1. The fixing shaft 46, which is fixedly connected to the fixing box 43, will drive the limiting plate 45 to resist the ratchet 44 outside the sliding column 42. Since the end shape of the limiting plate 45 matches the tooth groove of the ratchet 44, the limiting plate 45 will continuously slide across the outer wall of the ratchet 44, thus preventing the sliding column 42 inside the drill barrel 1 from rotating. On the other hand, under the elastic force of the torsion spring 47, the limiting plate 45 will also automatically slide one end into the tooth groove of the ratchet 44; when the inside of the drill barrel 1 is blocked, the motor 21 can be stopped, the fixing rod 10 can be pulled out from the inside of the connecting shaft 57, and the round hole in the bushing 7 can be moved to be aligned with the second limiting hole 9. Then the fixing rod 10 can be inserted into the inside of the bushing 7 and the second limiting hole 9. (At this time, the insert 56 will be completely displaced into the inside of the square tube 55. At this time, the insert 56 will be completely disengaged from the inside of the bushing 7, so the rotation of the connecting shaft 57 will not be able to drive the drill barrel 1 to rotate). Then the motor 21 can be started and the motor 21 can be used to perform the following actions: Reversing the rotation, motor 21 will drive insert block 56 to rotate square tube 55 and rotating plate. The arc surface of the rotating plate will abut against the arc surface of stop block 52. Under the continuous abutment, slide column 42 will slide downward with stop block 52 inside fixed box 43, thereby driving impact hammer 41 at one end of slide column 42 to impact the blockage in drill barrel 1. It is worth noting that when rotating block 53 and stop block 52 abut against each other, the resulting thrust may cause slide column 42 to rotate inside fixed box 43. However, due to the special limiting relationship between ratchet 44 and limit plate 45, slide column 42 can only rotate within fixed box 43. The slide column 42 slides linearly inside the fixed box 43 instead of rotating. At the same time, when the stop block 52 drives the slide column 42 to slide inside the fixed box 43, the spring 19 inside the outer cylinder 20 will be stretched. When the stop block 52 slides to the point of disengaging from the single inclined area of ​​the rotating block 53, the elastic force of the spring 19 will pull the slide column 42 back to the initial position and make contact with the arc area of ​​the rotating block 53 again. By repeating this process, the impact hammer 41 located inside the drill barrel 1 will continuously and repeatedly hammer the blockage, further increasing the efficiency of clearing the blockage and making it easier to remove the sampling wall, so that the inspection period meets the standards.

[0033] In addition, a lubrication assembly 6 is provided on one side of the ratchet 44 to increase the lubrication of the inner wall of the drill barrel 1. The lubrication assembly 6 includes a connecting post 61 located on one side of the ratchet 44. One end of the connecting post 61 is fixedly connected to the ratchet 44. One end of the connecting post 61 is provided with an annular plate 62 and is fixedly connected to it. The outer wall of the annular plate 62 is in contact with the inner wall of the fixed box 43. The annular plate 62 is slidably connected to the fixed box 43. The surface of the fixed box 43 is provided with multiple through holes 63. The interior of each of the multiple through holes 63 is provided with a one-way membrane 64. The one-way membrane 64 is fixedly connected to the fixed box 43 and has a one-way water outlet function. The surface of the fixed box 43 is also provided with an oil injection hole 65. The interior of the oil injection hole 65 is provided with a plug 66. The plug 66 is slidably connected to the oil injection hole 65. The operator can inject lubricating oil into the interior of the fixed box 43 through the oil injection hole 65.

[0034] During the sliding process of the sliding column 42 inside the fixed box 43, the ratchet 44 will drive the connecting column 61 to push the annular plate 62 to slide inside the fixed box 43, thereby causing the internal space of the fixed box 43 to contract, so that the lubricating oil inside flows out from the one-way film 64 to the inner wall of the drill barrel 1. The lubricating oil will eventually flow between the blockage and the drill barrel 1, thereby reducing the friction between the blockage wall and the inner wall of the drill barrel 1, which is more conducive to the impact hammer 41 to discharge the blockage wall from the drill barrel 1.

[0035] In addition, a water tank 14 is provided on the outer wall of the drill barrel 1. The water tank 14 is rotatably connected to the drill barrel 1. An impeller 15 is provided inside the water tank 14. The inner wall of the impeller 15 is fixedly connected to the outer wall of the drill barrel 1. Multiple water outlets 16 are provided on the surface of the water tank 14. A divergence box 17 is provided on one side of each of the multiple water outlets 16. One end of the divergence box 17 is fixedly connected to the water tank 14. The overall shape of the divergence box 17 is an outwardly expanding frustum. The frustum-shaped divergence box 17 is conducive to increasing the range of water mist spraying. When the drill barrel 1 is sampling normally, the impeller 15 will rotate with the drill barrel 1, thereby increasing the flow rate of water in the water tank 14, making the water flow from the divergence box 17 faster and wider, thereby reducing the large amount of dust generated during the drilling process and helping to protect the health of the workers.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wall sampling device for quality inspection of building engineering, comprising a drill cylinder (1), one end of which is provided with a driving component (2) to provide power for its rotation, the driving component (2) comprising a motor (21) and a control component (22), and one side of the drill cylinder (1) is provided with an alignment component (3) for calibrating the rotation direction of the drill cylinder (1), characterized in that: The drill barrel (1) is equipped with an impact component (4) that pushes the internal sampling wall to the outside. The impact assembly (4) includes an impact hammer (41) located inside the drill barrel (1). The impact hammer (41) is elastic. One end of the impact hammer (41) is provided with a sliding column (42). The outside of the sliding column (42) is provided with a fixed box (43). The outer wall of the fixed box (43) is fixedly connected to the inner wall of the drill barrel (1). The outer wall of the sliding column (42) is provided with a ratchet (44). The outer wall of the ratchet (44) is provided with a limiting plate (45) that abuts against its teeth. The inside of the limiting plate (45) is provided with a fixed shaft (46). One end of the fixed shaft (46) is fixedly connected to the fixed box (43). A torsion spring (47) is provided between the fixed shaft (46) and the limiting plate (45). Under normal conditions, the elastic force of the torsion spring (47) rotates one end of the limiting plate (45) to contact the inner wall of the teeth of the ratchet (44). The drill barrel (1) is provided with a drive assembly (5) for driving the sliding column (42) to slide inside the fixed box (43). The drive assembly (5) includes a connecting plate (51) located at one end of the sliding column (42). A stop block (52) is provided on one side of the connecting plate (51). A rotating block (53) is provided above the stop block (52) and contacts its surface. A connecting plate (54) is provided on one side of the rotating block (53). A square tube (55) is provided on one side of the connecting plate (54). An insert block (56) is provided inside the square tube (55). A connecting shaft (57) is provided at one end of the insert block (56). A coupling (58) is provided at one end of the connecting shaft (57). The coupling (58) is located outside the rotating shaft of the motor (21) and is fixedly connected to it. One end of the blocking block (52) is shaped as an arc surface, and the contact area between the rotating block (53) and the blocking block (52) is shaped as an arc surface. The rotating block (53) is provided with an inner rod (18), one end of the inner rod (18) is provided with a spring (19), and the outside of the spring (19) is provided with an outer cylinder (20). One end of the outer cylinder (20) is rotatably connected to the connecting plate (51).

2. The wall sampling device for building engineering quality inspection according to claim 1, characterized in that: The ratchet (44) is provided with a lubrication assembly (6) on one side to increase the lubrication of the inner wall of the drill barrel (1). The lubrication assembly (6) includes a connecting post (61) located on one side of the ratchet (44). One end of the connecting post (61) is provided with an annular piece (62). The outer wall of the annular piece (62) is in contact with the inner wall of the fixed box (43). The surface of the fixed box (43) is provided with multiple through holes (63). The interior of each of the multiple through holes (63) is provided with a one-way film (64). The surface of the fixed box (43) is also provided with an oil injection hole (65). The interior of the oil injection hole (65) is provided with a plug (66).

3. A wall sampling device for quality inspection of building engineering according to claim 1, characterized in that: The connecting shaft (57) has a bushing (7) on its outside, a limiting hole (8) inside the connecting shaft (57), a limiting hole (9) with the same diameter as the limiting hole (8) inside the connecting shaft (57), and a fixing rod (10) that passes through the bushing (7) and the connecting shaft (57) inside the limiting hole (8).

4. A wall sampling device for building engineering quality inspection according to claim 1, characterized in that: The outer wall of the impact hammer (41) is provided with an annular sleeve (11), and a stop plate (12) is provided on one side of the annular sleeve (11). The annular sleeve (11) includes a beveled part (111), and the outer wall of the beveled part (111) is in contact with the inner wall of the drill barrel (1).

5. A wall sampling device for quality inspection of building engineering according to claim 1, characterized in that: The surface of the connecting plate 2 (54) is provided with a counterweight (13), the weight of which is greater than the sum of the weights of the connecting plate 2 (54) and the rotating block (53).

6. A wall sampling device for quality inspection of building engineering according to claim 1, characterized in that: The outer wall of the drill barrel (1) is provided with a water tank (14), and the inside of the water tank (14) is provided with an impeller (15). The inner wall of the impeller (15) is fixedly connected to the outer wall of the drill barrel (1). The surface of the water tank (14) is provided with multiple water outlets (16). Each of the multiple water outlets (16) is provided with a divergence box (17) on one side. The overall shape of the divergence box (17) is an outwardly expanding frustum.

7. A wall sampling device for quality inspection of building engineering according to claim 1, characterized in that: The end of the insert (56) is sharp. When the insert (56) is inside the square tube (55), the outer wall of the insert (56) is in contact with the inner wall of the square tube (55).

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