Building wall hollowing checking device
By designing a device for detecting hollow areas in building walls, which includes a frame, axle, turntable, firing slot, firing rod, and striking block, and utilizing rollers and springs to provide stable movement, and the striking block hitting the wall to produce sound for detection, the device solves the problem of expensive and easily damaged infrared thermal imagers, and achieves simple and efficient hollow area detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-20
AI Technical Summary
Existing infrared thermal imager equipment for detecting hollow walls is expensive and complex to operate, making it difficult for ordinary personnel to operate. The equipment is also prone to damage, and large-area detection requires a large workload and can easily cause damage.
Design a device for inspecting hollow areas in building walls, including a frame, axle, turntable, firing slot, firing rod, and striking block. The device utilizes rollers and springs to provide stable movement and uses the striking block to strike the wall surface to produce sound for detection, simplifying the operation process.
It improves the accuracy and efficiency of testing, reduces equipment maintenance costs, and is easy for ordinary workers to operate, reducing the risk of errors and damage. It is suitable for large-area testing.
Smart Images

Figure CN224019749U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of wall hollowness inspection, specifically relating to a building wall hollowness inspection device. Background Technology
[0002] Hollow walls refer to the phenomenon of blistering, peeling, and bulging of the wall surface caused by improper construction techniques or dampness due to the use of base or surface materials (such as latex paint, putty, gypsum, white powder, etc.) on the interior wall. It is a common problem in building construction, with a variety of causes and poses a threat to the structural safety of the building.
[0003] Chinese Patent CN221405504U discloses a wall hollowing detection device for building supervision, comprising a base, multiple casters mounted on the lower surface of the base, a support column mounted on the upper surface of the base, a first motor mounted on the upper end of the support column, a rotating block mounted on the upper surface of the first motor, a fixed platform mounted on the upper surface of the rotating block, an adjustment component provided on the inner wall of the fixed platform, and a protective box mounted on the right side surface of the adjustment platform. This invention uses an adjustment device to precisely align an infrared thermal imager with the area to be measured. Then, the control panel controls the first motor to rotate one revolution, which in turn drives the infrared thermal imager to rotate one revolution. Simultaneously, the infrared thermal imager performs detection, and the detection data is displayed on a display device for precise comparison to check for the presence of hollow points. This method not only has a wide detection range and avoids omissions, but it is also easy to use and suitable for large-scale wall inspections.
[0004] However, the above-mentioned technical solutions still involve using infrared thermal imagers to detect hollow walls. Although the technology is advanced and can provide high-precision detection results, it is relatively expensive and the operation process is relatively complicated, which is not something that ordinary people can easily master. When building supervisors detect hollow walls, there are too many walls to inspect, resulting in a large workload. The inspection equipment needs to be handled with care to prevent damage, and it is easy to cause damage during continuous inspection. Utility Model Content
[0005] The purpose of this invention is to provide a device for detecting hollow areas in building walls, which makes it convenient and simple to monitor and inspect hollow areas in walls, and provides clear results that can be accurately identified without much experience.
[0006] The specific technical solution adopted by this utility model is as follows:
[0007] A device for inspecting hollow areas in building walls, comprising a frame,
[0008] A rotating shaft is rotatably connected to the frame. A turntable is fitted on the surface of the rotating shaft and the turntable is fixedly connected to the rotating shaft. Multiple firing slots are equidistantly opened on the surface of the turntable, and the firing slots are located on the outer ring of the turntable.
[0009] A spring is arranged in the inner cavity of the firing groove, the inner cavity of the firing groove is slidingly connected with a firing rod, two ends of the spring are fixedly connected with the bottom of the firing groove and the bottom of the firing rod respectively, and the other end of the firing rod is fixedly connected with a hitting block.
[0010] A fixing block is sleeved on the surface of the frame, the fixing block is fixedly connected with the frame, a limiting plate is fixedly connected on the surface of the fixing block, the limiting plate is annular, the rotating disc is located in the inside of the annular limiting plate, and the annular limiting plate has an opening.
[0011] Preferably, a clamping groove is formed on the surface of the frame, a clamping block is rotatably connected in the inner cavity of the clamping groove, an arc-shaped rod is fixedly connected on the surface of the clamping block, and a fixing rod is fixedly connected on the surface of the arc-shaped rod.
[0012] Preferably, a telescopic rod is sleeved on the surface of the fixing rod, the telescopic rod is slidingly connected with the fixing rod, and the overlapping end of the fixing rod and the telescopic rod is provided with an anti-disengagement structure, a resilient spring is slidingly connected in the inner cavity of the telescopic rod, and two ends of the resilient spring are fixedly connected with one end of the inner cavity of the telescopic rod and one end of the fixing rod located in the inner cavity of the telescopic rod.
[0013] Preferably, a handle is fixedly connected on the other end of the telescopic rod, and a rubber sleeve is sleeved on the surface of the handle.
[0014] Preferably, a plurality of rollers are arranged on the two sides of the frame, the rollers are rotatably connected with the frame, and the rollers are fixedly connected with the rotating shaft.
[0015] The utility model discloses the technical effect achieved is:
[0016] The utility model discloses, four rollers are arranged in total, three of which are rotatably connected with the frame, and the other is fixedly connected with one end of the rotating shaft, through the rotation and fixed combination of the rollers, the device can form rolling motion on the wall surface, the frame, the rotating shaft and the rollers jointly constitute the trolley type mobile structure, have the function of free sliding, the fixedly connected roller and the rotating shaft form the support point, in combination with the remaining three rotatably connected rollers, the balance and stability of the trolley structure when moving are ensured, the artificial operation demand is reduced, the operation efficiency is improved, and the device operation and maintenance cost is reduced.
[0017] The utility model discloses, through the percussion block impact wall surface to send out the sound, whenever the device every rotation, can ensure that every impact point can impact with the wall surface and produce the sound to the sound's coherence is very high, when the wall surface exists the empty drum condition, the sound produced by the percussion will immediately change, this change even for the person who is not experienced, also can easily distinguish, therefore, the mechanism not only improves the accuracy of sound detection, also greatly enhances the recognition ability of the detector to the wall empty drum problem, makes the detection process more efficient and reliable. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the general assembly drawing of the utility model;
[0019] Figure 2 It is the rotating disc connection relation drawing of the utility model;
[0020] Figure 3 It is the percussion rod connection relation section view of the utility model;
[0021] Figure 4 It is the frame structure schematic diagram of the utility model;
[0022] Figure 5 It is the telescopic link connecting structure drawing of the utility model.
[0023] In the drawings, the component list represented by each sign is as follows:
[0024] 1, frame;2, rotating shaft;3, rotating disc;4, percussion groove;5, spring;6, percussion rod;7, percussion block;8, fixed block;9, limiting plate;10, clamping groove;11, clamping block;12, arc-shaped rod;13, fixed rod;14, telescopic link;15, elastic spring;16, handle;17, gyro wheel. DETAILED DESCRIPTION
[0025] In order to make the purpose and the advantage of the utility model more clear and obvious, the following is combined with embodiment to the utility model specific explanation.It should be understood, the following text only to describe the utility model one or several specific implementation ways, and does not strictly limit the protection scope of the utility model specific request.
[0026] For example, Figures 1-5As shown, four rollers 17 are provided, three of which are rotationally connected with the frame 1, and the other is fixedly connected with one end of the rotating shaft 2. Through the rotation and fixed combination of the rollers 17, the device can form a rolling motion on the wall surface. The frame 1, the rotating shaft 2 and the rollers 17 jointly constitute a trolley type moving structure, which has the function of free sliding. The fixedly connected roller 17 and the rotating shaft 2 form a support point, combined with the other three rotationally connected rollers 17, to ensure the balance and stability of the trolley structure during movement, reduce the need for manual operation, improve work efficiency, facilitate disassembly and maintenance, and reduce equipment operation and maintenance cost.
[0027] Referring to the drawings Figure 1 and Figure 4 When supervising the hollowing condition of the wall surface, the frame 1 and the rotating shaft 2 form an I-shaped structure, which is not easy to overturn. The notch of the fixed block 8 always remains in a downward state, and the striking block 7 can always strike the wall surface downward. The whole structure is very stable, making the detection operation more convenient and efficient, reducing the time and energy consumption of frequent adjustment of detection tools, and improving the overall efficiency of wall hollowing supervision work.
[0028] Referring to the drawings Figure 1 The handle 16 controls the movement of the device, which not only allows the user to flexibly adjust the position of the device, but also makes it easier to perform the squeezing action. This greatly improves the operation efficiency, reduces the operation steps and time cost, and reduces the operation difficulty. Even a novice can quickly get started, truly achieving the goal of simplicity, convenience, efficiency and practicality, effectively improving the applicability and functionality of the device in actual application.
[0029] Referring to the drawings Figure 5 The fixed rod 13 smoothly slides in the inner cavity of the telescopic rod 14, so that the device can be extended. When performing wall exploration work, the user does not need to hold his hands up for a long time, greatly reducing the work intensity. This extension function also expands the detection range of the device, allowing it to easily reach areas that were previously difficult to reach, reducing the detection blind area caused by limited position, effectively improving the accuracy and comprehensiveness of wall exploration work, making the work more efficient and convenient.
[0030] According to the above structure, the elastic spring 15 provides power for the device, and the user can conveniently control the device to adhere to the wall surface and advance. The extension process of the elastic spring 15 is rapid, which not only greatly improves the work efficiency, but also reduces the time cost in the operation process, ensuring that the wall exploration work can be completed quickly and well, bringing the user a more convenient and efficient work experience, to some extent, prolonging the service life of the device and reducing the maintenance cost.
[0031] Further, the stable pressure provided by the elastic spring 15 pushes the trolley 1 to slide through the fixed rod 13, in the process of sliding of the trolley 1, the elastic spring 15 is extruded to make the roller 17 adhere to the wall surface, and with the continuous extrusion, the roller 17 rotates, and the roller 17 drives the rotating shaft 2 to rotate, when the rotating shaft 2 drives the rotating disc 3 to rotate in the inner cavity of the fixed block 8, the fixed block 8 can limit the sliding of the firing rod 6 in the inner cavity of the firing groove 4, so that the hitting block 7 knocks the wall surface, thereby generating a reverberation to determine the hollow condition of the wall surface, compared with the traditional hollow detection mode, it is simple and convenient to operate, without complex technology and a large number of manpower investment, ordinary workers can operate after simple training, and the detection efficiency is extremely high, which can quickly complete the detection work of large-area wall surface, greatly shortens the detection time, improves the work progress, and the detection result is accurate and reliable, effectively avoids the error caused by subjective judgment of manual work, provides a powerful guarantee for building engineering quality control, and reduces the subsequent maintenance cost and safety hidden danger caused by the hollow problem of the wall surface.
[0032] With reference to Figure 2 and Figure 3 , the inner wall of the limiting plate 9 is provided with a groove capable of accommodating the sliding of the hitting block 7 inside, and the two ends of the limiting plate 9 are smoothly treated to reduce the friction force when the hitting block 7 is contacted, prolonging the service life, the limiting plate 9 is fixedly connected to the surface of the fixed block 8, and the opening of the limiting plate 9 is downward, when the exploration is carried out, the limiting plate 9 is in contact with the hitting block 7 and extrudes the hitting block 7 with the rotation of the trolley 1, so that the firing rod 6 drives the hitting block 7 to slide in the inner cavity of the firing groove 4, the spring 5 is continuously deformed by the extrusion of the firing rod 6, after the hitting block 7 loses the limiting of the limiting plate 9, the restoring force of the spring 5 pushes the firing rod 6 to slide outward, so that the hitting block 7 hits the wall surface to emit sound, every time the device rotates one circle, it can ensure that every impact point can impact the wall surface and produce sound, thereby ensuring that the continuity of the sound is very high, when the wall surface has a hollow condition, the sound produced by the impact will immediately change, which can be easily distinguished even by inexperienced people, therefore, the mechanism not only improves the accuracy of sound detection, but also greatly enhances the identification ability of the detector to the hollow problem of the wall surface, making the detection process more efficient and reliable.
[0033] With reference to the attached Figure 4 , two clamping blocks 11 and two clamping grooves 10 are arranged in the device, which are located at the center position of the device to ensure that the trolley structure will not affect its stability due to position deviation from the center when sliding, in addition, the two clamping blocks 11 are fixedly connected through the arc-shaped rod 12 to ensure that they can operate synchronously, improving the stability of the trolley sliding and effectively avoiding the deviation caused by the asymmetric structure, thereby ensuring the smoothness and efficiency of the whole device operation.
[0034] The working principle of the utility model is: when the building supervision is inquired about the wall surface cavity condition, the roller 17 of the device is all pasted to the wall surface, the hand handle 16 is squeezed and is in the vertical state, the fixed rod 13 is slid into the inner chamber of the telescopic rod 14 and squeezes the elastic spring 15, the elastic spring 15 is deformed, then the handle 16 is controlled to make the device slide to the inquired area, the force of the frame 1 is deviated, the reset force of the elastic spring 15 pushes the frame 1 to slide forward, the frame 1 sliding drives the rotating shaft 2 to slide, and because the roller 17 is fixedly connected with the rotating shaft 2, the rotating shaft 2 rotates, the rotating shaft 2 drives the rotating disc 3 to rotate, the rotating disc 3 further makes the firing rod 6 rotate, the striking block 7 contacts the fixed block 8 and is squeezed by the annular structure of the fixed block 8 and gradually makes the spring 5 deform, when rotating to the opening of the fixed block 8, the reset force of the spring 5 pushes the firing rod 6 to slide outward, the striking block 7 on the surface of the firing rod 6 hits the wall surface, and the operator determines the cavity condition through the sound feedback of the wall surface.
[0035] The above is only the preferred embodiment of the utility model, it should be pointed out that, for the ordinary skill in the art, on the premise of not departing from the principle of the utility model, can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model. The structure, device and operation method not specifically described and explained in the utility model, are all implemented according to conventional means in the field without special description and limitation.
Claims
1. A device for inspecting hollow areas in building walls, comprising a frame (1), characterized in that: A rotating shaft (2) is rotatably connected to the frame (1). A turntable (3) is fitted on the surface of the rotating shaft (2), and the turntable (3) is fixedly connected to the rotating shaft (2). A plurality of firing slots (4) are equidistantly opened on the surface of the turntable (3), and the firing slots (4) are located on the outer ring of the turntable (3). A spring (5) is provided in the inner cavity of the firing groove (4). A firing rod (6) is slidably connected to the inner cavity of the firing groove (4). The two ends of the spring (5) are respectively fixedly connected to the bottom of the firing groove (4) and the bottom of the firing rod (6). The other end of the firing rod (6) is fixedly connected to a striking block (7). A fixing block (8) is fitted onto the surface of the frame (1). The fixing block (8) is fixedly connected to the frame (1). A limiting plate (9) is fixedly connected to the surface of the fixing block (8). The limiting plate (9) is annular. The turntable (3) is located inside the annular shape of the limiting plate (9). The annular shape formed by the limiting plate (9) has an opening.
2. The device for detecting hollow areas in building walls according to claim 1, characterized in that: The frame (1) has a slot (10) on its surface. The slot (10) is rotatably connected to a snap block (11). The snap block (11) is fixedly connected to an arc rod (12) on its surface. The arc rod (12) is fixedly connected to a fixing rod (13) on its surface.
3. The device for detecting hollow areas in building walls according to claim 2, characterized in that: The surface of the fixed rod (13) is fitted with a telescopic rod (14), the telescopic rod (14) is slidably connected to the fixed rod (13), and the overlapping ends of the fixed rod (13) and the telescopic rod (14) are both provided with an anti-detachment structure. The inner cavity of the telescopic rod (14) is slidably connected with a spring (15), and the two ends of the spring (15) are respectively fixedly connected to one end of the inner cavity of the telescopic rod (14) and one end of the fixed rod (13) located in the inner cavity of the telescopic rod (14).
4. The device for detecting hollow areas in building walls according to claim 3, characterized in that: The other end of the telescopic rod (14) is fixedly connected to a handle (16), and the surface of the handle (16) is covered with a rubber sleeve.
5. The device for detecting hollow areas in building walls according to claim 1, characterized in that: Multiple rollers (17) are provided on both sides of the frame (1). The rollers (17) are rotatably connected to the frame (1) and fixedly connected to the shaft (2).
Citation Information
Patent Citations
Wall hollowing checking device for building supervision
CN221405504U