Plastered wall hollowing inspection device

Abstract

The utility model discloses a plastering wall hollowing detection device, relates to the technical field of building quality detection, and aims to solve the technical problems that the conventional method for manually knocking and detecting plastering wall hollowing by using a hollowing hammer depends on experience, and is low in efficiency, high in labor intensity and high in leakage detection risk. Comprising a mounting mechanism, a driving mechanism, a knocking hammer, a reed, a magnifying lens and a U-shaped plate connected with the intelligent walking robot, the driving mechanism comprises a telescopic rod, a movable frame, a first spring and an extrusion part. According to the utility model, through the arrangement of the driving mechanism, the chain wheel transmission group drives the extrusion piece to rotate, and then the hemispherical pressed part is pushed, so that the knocking hammer can constantly, periodically and repeatedly impact and knock a wall surface, and the efficiency of hollowing detection is improved; in addition, by designing a vibration visualization structure of a wave-shaped reed and a magnifying lens, subjective experience judgment of traditional'sound listening to distinguish the hollowing 'is converted into objective observation of'shape observation to judge vibration', and the accuracy of hollowing inspection is further improved.

Description

Technical Field

[0001] This utility model relates to the field of building quality testing technology, and more specifically, to a device for checking for hollow plaster walls. Background Technology

[0002] In the construction project quality acceptance system, the detection of hollow defects in plastered walls is a crucial step in ensuring the structural stability and decorative durability of the walls. Hollow spots often arise from insufficient adhesion between the plaster layer and the base wall. If not promptly identified and addressed, they can easily lead to problems such as wall cracking and peeling, affecting not only the building's aesthetic integrity but also potentially creating safety hazards due to reduced local structural load-bearing capacity. Therefore, accurate detection of hollow defects is one of the core indicators of project quality control.

[0003] Traditional inspection methods primarily rely on inspectors tapping the wall with a hollow-sounding hammer and judging by the sound. This method depends entirely on personal experience, requires ladders for high walls, and is inefficient, labor-intensive, and prone to missing defects. While some electronic detection devices exist, they often involve complex sensing systems and intelligent analysis, resulting in high costs and cumbersome operation, hindering their rapid widespread application on construction sites. Therefore, we propose a device for inspecting hollow plaster walls. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a device for checking hollow plaster walls. This solves the technical problems of the current method of manually checking hollow plaster walls by tapping with a hollow hammer, which relies on experience, requires tools to climb, and has low efficiency, high labor intensity, and high risk of missed detection.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a device for checking hollow plaster walls, including an installation mechanism, a drive mechanism, a hammer, a spring, a magnifying glass, and a U-shaped plate connected to an intelligent walking robot; the installation mechanism includes a connecting rod and a mounting frame, one end of the connecting rod is connected to the U-shaped plate, and the mounting frame is integrally connected to the other end of the connecting rod; the drive mechanism includes a telescopic rod, a movable frame, a first spring, and a pressing component; the fixed end of the telescopic rod is fixedly connected to the mounting frame; the movable frame is fixed to the telescopic end of the telescopic rod, and a hemispherical pressure-bearing part is provided at the upper end of the movable frame; the first spring is sleeved on the outside of the telescopic rod; the pressing component includes a turntable, which is rotatably connected to the mounting frame through a sprocket transmission group, and at least two pressing parts are arranged in an array on the circumferential surface of the turntable, the pressing parts are arranged in an arc along the circumferential direction of the turntable, and the end of the pressing part contacts the outer surface of the pressure-bearing part; the hammer is fixedly connected to the movable frame; the spring and the magnifying glass are both fixedly connected to the mounting frame, and the cross section of the spring corresponds to the mirror surface of the magnifying glass.

[0006] Preferably, the mounting frame includes symmetrically arranged first mounting parts and a U-shaped mounting plate for connecting the two first mounting parts. The first ends of the two first mounting parts are respectively fixedly connected to the second mounting parts that are bent upwards in an arc shape. The first ends of the two second mounting parts are jointly fixedly connected to the end of the connecting long rod. The ends of the first mounting parts and the ends of the second mounting parts are both provided with support parts that are bent outwards at ninety degrees. The support parts are L-shaped and rollers are rotatably mounted on the support parts.

[0007] Preferably, the two side walls of the U-shaped mounting plate are provided with arc-shaped grooves, and the bottom wall of the U-shaped mounting plate is provided with threaded holes that run vertically through the bottom.

[0008] Preferably, the movable frame has a "W" shaped frame structure. One end of the movable frame extends into the gap between the two first mounting parts and is connected by a pivot. The middle part of the movable frame is fixedly connected to the telescopic end of the telescopic rod. The other end of the movable frame extends into the gap between the two second mounting parts. The fixed end of the telescopic rod is fixedly connected to the top of the fixed plate. When the first spring is in the relaxed state, its upper end abuts against the movable frame. The pressing element is located in the gap between the two second mounting parts. The turntable is rotatably connected to the side wall of the second mounting part through a disc shaft.

[0009] Preferably, the sprocket drive assembly includes a driving sprocket, a drive chain, a driven sprocket, and a motor; the driving sprocket is rotatably connected to a connecting rod near one end of the U-shaped plate via a bearing; the driven sprocket is rotatably connected to the outside of the second mounting part via the disc shaft of a turntable, and the driven sprocket is connected to the driving sprocket via the drive chain; the motor is fixedly connected to the long rod, and the motor's transmission shaft is connected to the axis of the driving sprocket.

[0010] Preferably, the drive mechanism further includes an elastic adjustment component, which includes a fixed plate, a second spring, a circular plate, and a bolt; the fixed plate is disposed in the U-shaped cavity of the U-shaped mounting plate, and sliders that are slidably connected to the arc-shaped groove are fixed on both sides of the fixed plate; the circular plate is connected to the bottom of the fixed plate by the second spring; the upper end of the bolt is fixedly connected to the bottom of the circular plate, and the bolt's threaded part is threadedly connected to the threaded hole on the U-shaped mounting plate.

[0011] Preferably, the hammer is supported and connected to the middle of the movable frame by a connecting rod, and when the first spring is in the relaxed state, the hammering point of the hammer is lower than the position of the highest point of the roller surface.

[0012] Preferably, there are two reeds, which are symmetrically fixed on the outside of the two second mounting parts, and the reeds are bent in a wavy shape.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of the driving mechanism, since the extrusion part is arc-shaped along the circumference of the turntable, and the end of the extrusion part contacts the outer surface of the pressure-receiving part, can drive the extrusion part to rotate through the sprocket transmission group, thereby pushing the hemispherical pressure-receiving part. In addition, with the contraction and reset action of the telescopic rod and the first spring, the hammer can strike the wall surface with constant and periodic repetitive impact, which greatly reduces the safety risks and physical exertion of manual climbing operations and improves the efficiency of hollow sound detection. Furthermore, by designing a vibration visualization structure of wave-shaped spring and magnifying glass, the traditional subjective experience judgment of "identifying hollow sound by listening to the sound" is transformed into the objective observation of "judging vibration by observing the shape". The vibration generated by the hammer hitting the wall surface will be transmitted to the spring. The vibration difference between the hollow area and the normal area will cause the spring to resonate at different amplitudes. Its vibration state is clearly visible after being magnified by the magnifying glass, which effectively avoids misjudgment and missed detection caused by environmental noise and lack of experience when listening manually, and further improves the accuracy of hollow sound inspection.

[0015] 2. This utility model, through the design of an adjustable elastic adjustment component, allows the rotating bolt to push the circular plate to compress the first spring, causing the fixed plate to slide along the arc-shaped groove, thereby adjusting the preload of the elastic mounting component. Combined with the arc-shaped design of the arc-shaped telescopic rod and the second spring (the arc center is consistent with the rotation axis of the striking component), the striking force of the hammer can be precisely controlled, adapting to the testing needs of plastered walls of different thicknesses and materials, and solving the problem of poor testing adaptability caused by the uncontrollable striking force of traditional tools. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a partial front view schematic diagram of the structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the inspection mechanism structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the mounting bracket structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the striking component structure of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. U-shaped plate; 2. Mounting mechanism; 21. Connecting rod; 22. Mounting frame; 221. First mounting part; 222. U-shaped mounting plate; 2221. Arc-shaped slide groove; 223. Second mounting part; 224. Support part; 225. Roller; 3. Drive mechanism; 31. Telescopic rod; 32. Movable frame; 321. Pressure-bearing part; 33. First spring; 34. Extrusion part; 341. Turntable; 342. Extrusion part; 35. Sprocket drive assembly; 351. Drive sprocket; 352. Drive chain; 353. Driven sprocket; 354. Motor; 36. Elastic adjustment assembly; 361. Fixed plate; 3611. Slider; 362. Second spring; 363. Circular plate; 364. Bolt; 4. Striking hammer; 5. Spring; 6. Magnifying glass. Detailed Implementation

[0024] like Figures 1 to 6 As shown, the present invention relates to a device for inspecting hollow plaster walls, comprising an installation mechanism 2, a drive mechanism 3, a hammer 4, a spring 5, a magnifying glass 6, and a U-shaped plate 1 connected to an intelligent walking robot.

[0025] like Figure 1 As shown, in this embodiment, the U-shaped plate 1 is connected to the robotic arm of the intelligent walking robot for driving. The intelligent walking robot is a conventional technology and will not be described in detail here.

[0026] like Figure 1-5 As shown, the installation mechanism 2 in this embodiment includes a connecting rod 21 and a mounting frame 22. The first end of the connecting rod 21 is connected to the U-shaped plate 1 using an existing telescopic structure to form an operating rod that can extend and retract. This can adapt to the needs of the inspection height, allowing operators to inspect the wall surface in high areas without having to climb, thus reducing safety risks and physical exertion.

[0027] The mounting bracket 22 in this embodiment includes symmetrically arranged first mounting parts 221 and a U-shaped mounting plate 222 for connecting the two first mounting parts 221. The two side walls of the U-shaped mounting plate 222 are provided with arc-shaped sliding grooves 2221, and the bottom wall of the U-shaped mounting plate 222 is provided with threaded holes that pass through vertically. The first ends of the two first mounting parts 221 are respectively fixedly connected to the upwardly curved second mounting parts 223. The first ends of the two second mounting parts 223 are fixedly connected to the end of the connecting long rod 21. The end of the first mounting part 221 and the end of the second mounting part 223 are both provided with support parts 224 that are bent outward at ninety degrees. The support parts 224 are L-shaped, and rollers 225 are rotatably mounted on the support parts 224. The combination of the L-shaped support parts 224 and the rollers 225 realizes the stable support and flexible sliding of the device on the wall. It not only ensures that the distance between the mounting mechanism 2 and the wall remains unchanged, but also improves the efficiency of hollow inspection by the rollers 225 rolling on the wall.

[0028] like Figure 1-5 As shown, the drive mechanism 3 in this embodiment includes a telescopic rod 31, a movable frame 32, a first spring 33, a pressing member 34, a sprocket drive assembly 35, and an elastic adjustment assembly 36; the elastic adjustment assembly 36 includes a fixed plate 361, a second spring 362, a circular plate 363, and a bolt 364.

[0029] The fixing plate 361 is set in the U-shaped cavity of the U-shaped mounting plate 222. The fixing plate 361 has sliders 3611 fixed on both sides that are slidably connected to the arc-shaped sliding groove 2221. The circular plate 363 is connected to the bottom of the fixing plate 361 by the second spring 362. The upper end of the bolt 364 is fixedly connected to the bottom of the circular plate 363, and the threaded part of the bolt 364 is threadedly connected to the threaded hole on the U-shaped mounting plate 222.

[0030] The telescopic rod 31 is arc-shaped, and its fixed end is fixedly connected to the top of the fixed plate 361. The movable frame 32 has a "W"-shaped frame structure. One end of the movable frame 32 extends into the gap between the two first mounting parts 221 and is connected by a pivot. The middle part of the movable frame 32 is fixedly connected to the telescopic end of the telescopic rod 31. The other end of the movable frame 32 is provided with a hemispherical pressure-bearing part 321 and extends into the gap between the two second mounting parts 223. The first spring 33 is sleeved on the outside of the telescopic rod 31, and when the first spring 33 is in the relaxed state, its upper end abuts against... On the movable frame 32; the extrusion member 34 is located in the gap between the two second mounting parts 223. The extrusion member 34 includes a turntable 341, which is rotatably connected to the side wall of the second mounting part 223 via a disc shaft; the extrusion member 34 includes a turntable 341, which is rotatably connected to the mounting frame 22 via a sprocket drive assembly 35. At least two extrusion parts 342 are arranged in an array on the circumferential surface of the turntable 341. The extrusion parts 342 are arranged in an arc shape along the circumferential direction of the turntable 341, and the ends of the extrusion parts 342 are in contact with the outer surface of the pressure-receiving part 321.

[0031] The sprocket drive assembly 35 includes a drive sprocket 351, a drive chain 352, a driven sprocket 353, and a motor 354. The drive sprocket 351 is rotatably connected to the connecting rod 21 near one end of the U-shaped plate 1 via a bearing. The driven sprocket 353 is rotatably connected to the outside of the second mounting part 223 via the disc shaft of the turntable 341, and the driven sprocket 353 is connected to the drive sprocket 351 via the drive chain 352. The motor 354 is fixedly connected to the rod 21, and the transmission shaft of the motor 354 is connected to the shaft of the drive sprocket 351.

[0032] The hammer 4 is connected to the middle of the movable frame 32 by a connecting rod, and when the first spring 33 is in the relaxed state, the hammering point of the hammer 4 is lower than the highest point of the roller 225.

[0033] Two reeds 5 are provided, symmetrically fixed on the outer sides of the two second mounting parts 223, and the reeds 5 are curved in a wave shape. The magnifying glass 6 is fixedly connected to the mounting bracket 22, and the cross-section of the reed 5 corresponds to the mirror surface of the magnifying glass 6. When the hammer 4 strikes the wall, the vibration is transmitted to the wave-shaped reeds 5. The reeds 5 will resonate to different degrees due to the different vibrations of the wall. The amplitude of the vibration is directly magnified and visualized by a magnifying glass 6. By observing the vibration amplitude of the reeds 5 in the lens, the operator can objectively and clearly determine whether there is a hollow area in the wall below, realizing the transformation from "listening to sound" to "observing the shape", which significantly improves the accuracy and consistency of the inspection.

[0034] The transmission structure of the sprocket and chain converts the operation of the motor 354 at the U-shaped plate 1 into the rotational power of the extrusion piece 34. The transmission efficiency is high and the operation is labor-saving. By rotating the extrusion piece 34 in conjunction with the elastic adjustment component 36, the hammer 4 can be used to strike the wall, and the hollow sound inspection work can be carried out without climbing.

[0035] Rotating the bolt 364 can push the circular plate 363 to compress the second spring 362, thereby adjusting the position of the fixed plate 361. The cooperation between the arc-shaped groove 2221 and the slider 3611 ensures that the fixed plate 361 moves along the arc-shaped trajectory, realizing the precise adjustment of the preload of the elastic adjustment component 36, thereby adjusting the force of the hammer 4 striking the wall.

[0036] The arc-shaped design matches the extension and retraction direction of the elastic adjustment component 36 with the rotation trajectory of the hammer 4, avoiding the generation of additional radial force. The arc-shaped telescopic rod 31 can prevent the first spring 33 from deforming and shifting, ensuring that the elastic force acts stably on the hammer 4 and guaranteeing the consistency of the striking force.

[0037] The “W”-shaped movable frame 32 can extend the lever arm of the hammer 4 and improve the striking effect. The hemispherical pressure part 321 reduces the contact friction with the squeezing part 342, so that the squeezing part 342 can smoothly push the pressure part 321 when it rotates, thereby driving the hammer 4 to rotate around the axis to achieve the striking action.

[0038] The extrusion section 342 of the array can trigger multiple tapping actions every time the extruder 34 rotates, thereby improving detection efficiency. The arc-shaped extrusion section 342 can form smooth contact and separation with the pressure-bearing section 321, ensuring the stability of the tapping frequency.

[0039] Working Principle: This embodiment provides a device for inspecting hollow plaster walls. In use, the support rod is connected to the robotic arm of an intelligent walking robot for drive. Inspectors set the robot's movement path according to the site conditions. This program control is outside the scope of this invention and will not be elaborated upon. The roller 225 is placed against the plaster wall to be inspected. The combination of the L-shaped support 224 and the roller 225 ensures the device maintains a stable distance from the wall and can roll flexibly. Subsequently, the motor 354 drives the drive sprocket 351 to rotate. 1. Driven by the transmission chain 352, the driven sprocket 353 rotates, and the extrusion member 34, which is connected to the shaft of the driven sprocket 353, rotates together. The arc-shaped extrusion sections 342 arrayed on the outer surface of the turntable 341 of the extrusion member 34 rotate synchronously. When the extrusion section 342 contacts the hemispherical pressure receiving section 321, it pushes the pressure receiving section 321 to rotate around its axis, and the arc-shaped telescopic rod 31 retracts accordingly. The first spring 33 on the outside is compressed and accumulates elastic potential energy. When the extrusion section 342 rotates and disengages from the pressure receiving section 321, the first spring 33 releases its elastic potential energy through the arc-shaped telescopic rod. Rod 31 pushes the movable frame 32 to quickly reset, causing the hammer 4 to strike the wall. The arc center of the arc-shaped telescopic rod 31 and the first spring 33 are aligned with the rotation axis of the hammer 4, ensuring stable striking force. The vibration generated by the strike is transmitted to the wave-shaped spring 5 on the second mounting part 223. The spring 5 resonates to varying degrees due to differences in wall vibration. The amplitude of this vibration is directly magnified and visualized through a magnifying glass 6. By observing the vibration amplitude of the spring 5 within the lens, the operator can objectively and clearly determine whether there is any wall surface vibration below. In the case of hollow sound, the transformation from "listening to sound" to "observing the shape" is realized. If the striking force needs to be adjusted, the bolt 364 of the elastic adjustment component can be rotated to push the circular plate 363 to squeeze the second spring 362, which in turn drives the fixed plate 361 to slide along the arc-shaped groove 2221 through the slider 3611, thereby changing the preload of the elastic adjustment component 36 to meet the detection needs of different wall surfaces and striking forces. The whole process does not require climbing. Continuous striking detection is achieved through the cooperation of chain drive and elastic structure. Combined with the vibration amplification observation of the spring 5, the detection efficiency and accuracy are greatly improved.

[0040] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A device for inspecting hollow areas in plastered walls, characterized in that, It includes an installation mechanism (2), a drive mechanism (3), a hammer (4), a reed (5), a magnifying glass (6), and a U-shaped plate (1) connected to the intelligent walking robot; The installation mechanism (2) includes a connecting rod (21) and a mounting bracket (22). One end of the connecting rod (21) is connected to the U-shaped plate (1), and the mounting bracket (22) is integrally connected to the other end of the connecting rod (21). The drive mechanism (3) includes a telescopic rod (31), a movable frame (32), a first spring (33), and an extrusion component (34); the fixed end of the telescopic rod (31) is fixedly connected to the mounting frame (22); the movable frame (32) is fixed to the telescopic end of the telescopic rod (31), and a hemispherical pressure-bearing part (321) is provided on the upper end of the movable frame (32); the first spring (33) is sleeved on the outside of the telescopic rod (31); the extrusion component (34) includes a turntable (341), the turntable (341) is rotatably connected to the mounting frame (22) through a sprocket drive group (35), and at least two extrusion parts (342) are arranged in an array on the circumferential surface of the turntable (341). The extrusion parts (342) are arranged in an arc shape along the circumferential direction of the turntable (341), and the end of the extrusion part (342) is in contact with the outer surface of the pressure-bearing part (321); The striking hammer (4) is fixedly connected to the movable frame (32); The reed (5) and the magnifying glass (6) are both fixedly connected to the mounting bracket (22), and the cross section of the reed (5) corresponds to the mirror surface of the magnifying glass (6).

2. The device for checking hollow plaster walls according to claim 1, characterized in that, The mounting bracket (22) includes symmetrically arranged first mounting parts (221) and a U-shaped mounting plate (222) for connecting the two first mounting parts (221). The first ends of the two first mounting parts (221) are respectively fixedly connected to the second mounting parts (223) that are bent upwards in an arc shape. The first ends of the two second mounting parts (223) are fixedly connected to the end of the connecting long rod (21). The end of the first mounting part (221) and the end of the second mounting part (223) are both provided with a support part (224) that is bent outwards at ninety degrees. The support part (224) is L-shaped and a roller (225) is rotatably mounted on the support part (224).

3. The device for checking hollow plaster walls according to claim 2, characterized in that, The U-shaped mounting plate (222) has arc-shaped grooves (2221) on both sides and threaded holes running vertically through the bottom wall.

4. The device for checking hollow plaster walls according to claim 2, characterized in that, The movable frame (32) has a "W" shaped frame structure. One end of the movable frame (32) extends into the gap between the two first mounting parts (221) and is connected by a pivot. The middle part of the movable frame (32) is fixedly connected to the telescopic end of the telescopic rod (31). The other end of the movable frame (32) extends into the gap between the two second mounting parts (223). The fixed end of the telescopic rod (31) is fixedly connected to the top of the fixed plate (361). When the first spring (33) is in the relaxed state, its upper end abuts against the movable frame (32). The pressing part (34) is located in the gap between the two second mounting parts (223). The turntable (341) is rotatably connected to the side wall of the second mounting part (223) through the turntable shaft.

5. A device for inspecting hollow plaster walls according to claim 2, characterized in that, The sprocket drive assembly (35) includes a drive sprocket (351), a drive chain (352), a driven sprocket (353), and a motor (354). The drive sprocket (351) is rotatably connected to a connecting rod (21) near one end of the U-shaped plate (1) via a bearing. The driven sprocket (353) is rotatably connected to the outside of the second mounting part (223) via the disc shaft of the turntable (341). The driven sprocket (353) is connected to the drive sprocket (351) via the drive chain (352). The motor (354) is fixedly connected to the long rod (21), and the transmission shaft of the motor (354) is connected to the shaft of the drive sprocket (351).

6. The device for inspecting hollow plaster walls according to claim 2, characterized in that, The drive mechanism (3) also includes an elastic adjustment component (36), which includes a fixed plate (361), a second spring (362), a circular plate (363), and a bolt (364). The fixed plate (361) is set in the U-shaped cavity of the U-shaped mounting plate (222), and the fixed plate (361) is fixed on both sides with sliders (3611) that are slidably connected to the arc-shaped slide groove (2221). The circular plate (363) is connected to the bottom of the fixed plate (361) through the second spring (362). The upper end of the bolt (364) is fixedly connected to the bottom of the circular plate (363), and the screw part of the bolt (364) is threadedly connected to the threaded hole on the U-shaped mounting plate (222).

7. The device for inspecting hollow plaster walls according to claim 2, characterized in that, The hammer (4) is connected to the middle of the movable frame (32) by a connecting rod, and when the first spring (33) is in the relaxed state, the hammering point of the hammer (4) is lower than the position of the highest point of the roller (225).

8. The device for checking hollow plaster walls according to claim 2, characterized in that, There are two springs (5), which are symmetrically fixed on the outside of the two second mounting parts (223). The springs (5) are bent in a wave shape.

Images