Wall hollowing detection device
By using a spray hammer to strike the wall surface and spray liquid mist markings, the problem of marking point deviation in existing technologies is solved, achieving high-precision and high-efficiency hollow detection marking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-03-17
AI Technical Summary
Existing wall hollow detection devices require rotating or moving the spray hammer head when marking the boundary of hollow areas, which causes the marked point to deviate from the detection point, affecting the marking accuracy and efficiency.
The wall surface is struck with a spray hammer, and the hollow areas are identified by sound. The spray pump is controlled to spray liquid mist from the front of the spray hammer to mark the area, preventing the spray hammer from moving and ensuring that the marked points are consistent with the detection points.
It improves marking accuracy, ensures that the marked points are consistent with the detection points, and allows the marking work to be carried out quickly without the need to rotate or move the spray hammer for alignment.
Smart Images

Figure CN224005012U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of wall surface detection devices, specifically a wall surface hollowing detection device. Background Technology
[0002] Hollow spots in walls refer to the blistering, peeling, and bulging of the base or surface materials (such as latex paint, putty, plaster, and whitewash) on interior walls due to improper construction techniques or moisture exposure. Hollow spots damage the smoothness and overall aesthetics of the wall surface. These bulges and cracks not only affect the visual appeal but can also impact the mood and quality of life of the residents. Hollow spots are particularly noticeable during interior decoration, affecting the final result. Therefore, after wall decoration work is completed, hollow spot testing is necessary to ensure construction quality.
[0003] The utility model with announcement number CN214953236U discloses a wall hollow detection device, which includes a connecting rod, a hammer for striking the wall, and a marking pen for marking the location of hollow areas on the wall. The hammer and the marking pen are both connected to the connecting rod. By using the connecting rod, the marking pen and the hammer are moved. The hammer strikes the wall to detect whether there are hollow areas on the wall. If there are hollow areas on the wall, the marking pen marks the location of the hollow areas in time, realizing rapid marking and improving the detection efficiency of wall hollow areas.
[0004] In the above-mentioned device, the hammer and the marking pen are set far apart and have a height difference. During use, in order to avoid interference from the marking pen during hammering, it is usually pointed to one side or the back. When the boundary of the hollow area needs to be marked, the hammer must first be moved away from the wall, the marking pen is rotated to face the wall, and then moved up to the height of the hammer for marking. In the above process, because rotation and movement are required, the position of the marking may deviate significantly from the detection position, making the marking point inconsistent with the actual detection point. Therefore, in order to solve the above problems, a wall hollow detection device is proposed. Utility Model Content
[0005] The technical problem this invention aims to solve is to provide a wall surface hollow detection device. This device uses a spray hammer to strike the wall surface and determines the boundary of the hollow area based on the sound. When a hollow area is detected, there is no need to move the spray hammer. Instead, the device controls the spray pump to spray marking liquid mist from the front end of the spray hammer to mark the detection point. Since there is no need to rotate or move the spray hammer, the marked point is the actual detected point, resulting in high marking accuracy. Furthermore, the device facilitates rapid marking by eliminating the need for rotation or movement to align the marked points. This solves the technical problem in the prior art where, when marking the boundary of a hollow area, the marking pen needs to be rotated and moved to align with the detection point, which can lead to a significant deviation between the marked and detected positions during alignment, resulting in discrepancies between the marked and actual detected points.
[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:
[0007] A wall hollow detection device includes a telescopic rod with a handle fixedly connected to its bottom end and an adjustable locking mechanism for fixing the rod length. A spray hammer is installed at the top of the telescopic rod to strike the wall surface to be tested and spray marking liquid mist. A spray pump is fixedly installed at the top of the telescopic rod, and its output interface is sealed to the spray hammer via a liquid inlet pipe. The wall detection device determines the boundary of the hollow area by striking the wall surface with the spray hammer and judging from the sound. When a hollow area is detected, there is no need to move the spray hammer. The spray pump can be controlled to spray marking liquid mist from the front end of the spray hammer to mark the detection point. Since there is no need to rotate or move the spray hammer, the marked point is the actual detected point, which has high marking accuracy. Furthermore, there is no need to rotate or move to align the marked points during marking, which also facilitates rapid marking.
[0008] In one possible implementation, the spray hammer head is composed of three parts connected in sequence: a striking head, a transition section, and a hammer base. Each of the three parts has a connected liquid tank inside. Based on the structural form, it can form a hammer body structure for hammering, which is convenient for hammering detection on the wall surface. The liquid tank inside provides the necessary structural basis for the delivery of the marking solution.
[0009] In one possible implementation, the front end of the striking head has a nozzle, in which a threaded nozzle is embedded and communicates with a liquid tank. The delivered marking solution can be sprayed out from the nozzle to adhere to the wall and form marking points. The nozzle is detachable and can be easily replaced.
[0010] In one possible implementation, the bottom end of the handle is threadedly connected to a reservoir containing a marking paint solution, and a flexible tube is inserted therein. The end of the flexible tube away from the reservoir is sealed to the input interface of the sprayer pump. In the above structure, the reservoir is used to hold the marking solution and deliver the marking solution to the sprayer pump through the flexible tube.
[0011] In one possible implementation, the telescopic rod includes a cylindrical shell, in which a sliding rod is slidably disposed, and a mounting end plate is fixedly connected to the top of the sliding rod. The overall length of the telescopic rod can be adjusted by sliding the sliding rod, making it convenient to adjust the length of the telescopic rod according to the height of the detection position.
[0012] In one possible implementation, the cylindrical shell is provided with a vertically arranged adjustment groove, and a rough friction strip is fixedly arranged around the adjustment groove on the surface of the cylindrical shell. The above structure provides the necessary structural basis for the operation of the adjustment locking mechanism.
[0013] In one possible implementation, the adjusting locking mechanism includes a slider slidably disposed in an adjusting groove, on which a locking screw is fixedly disposed. A locking wheel is threadedly connected to the locking screw, and the locking wheel is in contact with the friction strip. When the sliding rod slides to adjust the length of the telescopic rod, the slider will slide synchronously in the adjusting groove. When it is necessary to fix the position of the sliding rod, the locking wheel is tightened, and it squeezes and rubs against the friction strip, so that the sliding rod and the cylinder shell are fixedly connected, thereby fixing the length of the telescopic rod.
[0014] In one possible implementation, the handle is equipped with a push-button switch for controlling the start and stop of the sprayer pump, and a removable battery is installed inside the handle to power the sprayer pump. This structure provides the necessary structural basis for controlling the sprayer pump to operate as needed.
[0015] In summary, this utility model has the following beneficial technical effects:
[0016] This wall detection device uses a spray hammer to strike the wall and determines the boundary of hollow areas based on the sound. When a hollow area is detected, there is no need to move the spray hammer. Instead, the spray pump is controlled to spray marking liquid mist from the front of the spray hammer to mark the detection point. Since there is no need to rotate or move the spray hammer, the marked point is the actual detected point, which has high marking accuracy. Furthermore, there is no need to rotate or move the marked point for alignment during marking, which also facilitates rapid marking. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the spray hammer head structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the telescopic rod structure of this utility model.
[0021] In the diagram: 1. Telescopic rod; 11. Cylinder shell; 111. Adjustment groove; 112. Friction strip; 12. Sliding rod; 13. Mounting end plate; 2. Handle; 21. Push-button switch; 3. Adjustment locking mechanism; 31. Slider; 32. Locking screw; 33. Locking wheel; 4. Spray hammer; 41. Striking head; 42. Transition section; 43. Hammer base; 44. Nozzle; 45. Spray nozzle; 46. Liquid tank; 5. Sprayer pump; 6. Liquid reservoir; 7. Hose; 8. Infusion tube. Detailed Implementation
[0022] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:
[0023] like Figure 1 - Figure 2 As shown, this embodiment provides a wall hollow detection device, including a telescopic rod 1 with a handle 2 fixedly connected to its bottom end and an adjustment locking mechanism 3 for fixing the length of the rod. A spray hammer 4 is installed at the top of the telescopic rod 1 to hammer the wall to be detected and spray marking liquid mist. A spray pump 5 is fixedly installed at the top of the telescopic rod 1, and its output end interface is sealed to the spray hammer 4 through a liquid inlet pipe 8. The wall detection device uses the spray hammer 4 to hammer the wall and judges the boundary of the hollow area based on the sound. When a hollow area is detected, there is no need to move the position of the spray hammer 4. The spray pump 5 can be controlled to work to spray marking liquid mist from the front end of the spray hammer 4 to mark the detection point. Since there is no need to rotate or move the position of the spray hammer 4, the marked point is the actual detected point, which has high marking accuracy. Moreover, there is no need to rotate or move to align the marked points during marking, so it also has the characteristic of facilitating rapid marking work.
[0024] like Figure 2As shown, the spray hammer head 4 is composed of three parts connected in sequence: a striking head 41, a transition section 42, and a hammer base 43. Each of the three parts has a connected liquid tank 46 inside. Based on the structural form, it can form a hammer body structure for hammering, which is convenient for hammering detection on the wall. The liquid tank 46 inside provides the necessary structural foundation for the delivery of the marking solution. The striking head 41 has a nozzle 45 at the front end, in which a threaded nozzle 44 is embedded and connected to the liquid tank 46. The delivered marking solution can be sprayed out from the nozzle 44 and adhere to the wall to form marking points. The detachable installation of the nozzle 44 makes it easy to replace.
[0025] like Figure 1 As shown, a reservoir 6 is threaded to the bottom of the handle 2, which contains a marking paint solution and a hose 7 is inserted therein. The end of the hose 7 away from the reservoir 6 is sealed to the input interface of the sprayer pump 5. In the above structure, the reservoir 6 is used to hold the marking solution and deliver the marking solution to the sprayer pump 5 through the hose 7.
[0026] like Figure 3 As shown, the telescopic rod 1 includes a cylindrical shell 11, in which a sliding rod 12 is slidably arranged, and a mounting end plate 13 is fixedly connected to the top of the sliding rod 12. The overall length of the telescopic rod 1 can be adjusted by sliding the sliding rod 12, which is convenient for users to adjust the length of the telescopic rod 1 according to the height of the detection position. A vertically arranged adjustment groove 111 is provided on the cylindrical shell 11, and a rough friction strip 112 is fixedly arranged around the adjustment groove 111 on the surface of the cylindrical shell 11. The above structure provides the necessary structural basis for the operation of the adjustment locking mechanism 3.
[0027] The adjusting locking mechanism 3 includes a slider 31 slidably disposed in the adjusting groove 111, on which a locking screw 32 is fixedly disposed. A locking wheel 33 is threadedly connected to the locking screw 32. The locking wheel 33 is in contact with the friction strip 112. When the sliding rod 12 slides to adjust the length of the telescopic rod 1, the slider 31 will slide synchronously in the adjusting groove 111. When it is necessary to fix the position of the sliding rod 12, the locking wheel 33 is tightened, and it squeezes and rubs against the friction strip 112, so that the sliding rod 12 and the cylinder shell 11 are fixedly connected, thereby fixing the length of the telescopic rod 1.
[0028] like Figure 1 As shown, the handle 2 is equipped with a push-button switch 21, which is used to control the start and stop of the sprayer pump 5. The handle 2 also has a removable battery inside, which powers the sprayer pump 5. The above structure provides the necessary structural basis for controlling the sprayer pump 5 to work as needed.
[0029] The working principle and usage process of this utility model:
[0030] This wall detection device uses a spray hammer 4 to strike the wall and determines the boundary of the hollow area based on the sound. When a hollow area is detected, there is no need to move the spray hammer 4. The spray pump 5 can be controlled to spray marking liquid mist from the front end of the spray hammer 4 to mark the detection point. Since there is no need to rotate or move the spray hammer 4, the marked point is the actual detected point, which has high marking accuracy. Moreover, there is no need to rotate or move to align the marked points during marking, so it also has the characteristic of facilitating rapid marking work.
[0031] The above-mentioned marking work is specifically manifested as follows: when marking is required, the sprayer pump 5 is started by pressing the switch 21. The sprayer pump 5 draws out the marking solution from the reservoir 6 and pressurizes it to be sent into the spray hammer head 4 through the infusion pipe 8. The marking solution is input into the nozzle 44 along the liquid groove 46 in the spray hammer head 4, and then sprayed out to form a marking liquid mist to mark the detection point.
[0032] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A wall hollowing detection device characterized by, The utility model relates to a wall surface detection device, including: Telescopic rod (1), its bottom end fixedly connected with handle (2), and its top is equipped with the adjusting locking mechanism (3) for fixing the length of rod body; Spray hammer head (4) is installed at the top of telescopic rod (1), is used to hammer the wall surface to be detected, and can spray liquid mist for marking; Wherein, the top of telescopic rod (1) is fixedly installed with sprayer pump (5), and the output end interface is in closed communication with spray hammer head (4) through liquid delivery pipe (8).
2. The wall hollowing detection device according to claim 1, characterized in that: The spray hammer head (4) is composed of three parts of knocking head (41), transition section (42) and hammer seat (43) in sequence, and the inside of above-mentioned three is all provided with the liquid tank (46) of intercommunication.
3. The wall hollowing detection device according to claim 2, characterized in that: The front end of knocking head (41) is provided with spout (45), wherein the threaded connection of nozzle (44) is embeddedly arranged, and nozzle (44) is in communication with liquid tank (46).
4. The wall hollowing detection device according to claim 1, characterized in that: The bottom end of handle (2) is threadedly connected with liquid storage pot (6), wherein the marking paint solution is contained, and the hose (7) is inserted, and the end away from liquid storage pot (6) of hose (7) is in closed connection with the input end interface of sprayer pump (5).
5. The wall hollowing detection device according to claim 1, characterized in that: Telescopic rod (1) includes cylinder shell (11), wherein sliding rod (12) is slidably arranged, and the top end of sliding rod (12) is fixedly connected with mounting end plate (13).
6. The wall hollowing detection device according to claim 5, characterized in that: The cylinder shell (11) is provided with the adjusting groove (111) of vertical arrangement, and the surface of cylinder shell (11) is fixedly provided with the friction strip (112) of rough surface around adjusting groove (111).
7. The wall hollowing detection device according to claim 6, characterized in that: The adjusting locking mechanism (3) includes the sliding block (31) slidably arranged in adjusting groove (111), and the locking screw (32) is fixedly arranged on sliding block (31), the locking wheel (33) is threadedly connected on locking screw (32), and locking wheel (33) is attached to friction strip (112).
8. The wall hollowing detection device according to claim 1, characterized in that: The handle (2) is provided with press switch (21), which is used to control the start and stop of sprayer pump (5), and the handle (2) is provided with detachable battery inside, which is used to power sprayer pump (5).