Empty drum detection structure for constructional engineering quality detection
By designing an automatically retractable recording pen structure, the problem of cumbersome and dangerous detection of hollow areas at high altitudes was solved, enabling efficient and safe recording of hollow area locations and extending the service life of the equipment.
Patent Information
- Application Number
- CN202520258654.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-18
AI Technical Summary
In current construction quality inspection, detecting hollow areas at heights requires inspectors to stand on stools or other tools to record the location of hollow areas, which is cumbersome and poses safety risks.
Design a detection structure that includes a hollow drum hammer mechanism and an adjustment mechanism. Utilize a threaded rod, a rotating rod, and a conical extrusion head to achieve automatic extension and retraction of the recording pen. Through the cooperation of the adjustment knob and the adjustment sleeve, the recording pen automatically extends to mark when a hollow drum is struck, avoiding manual recording from a high position.
It improves testing efficiency, reduces the tediousness and safety risks of working at heights, extends the service life of equipment, and reduces the probability of safety accidents.
Smart Images

Figure CN223897382U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hollow detection technology, and more specifically, to a hollow detection structure for quality inspection of building engineering. Background Technology
[0002] Hollow spots in building structures refer to the phenomenon where parts of the walls, floors, ceilings, etc., detach from the surface layer due to poor bonding between the base layer and the surface layer. When tapped, they produce a clear "thump" sound and feel hollow. This problem not only affects the aesthetics of the building but can also lead to surface cracking and peeling, threatening residential safety, and requires timely inspection and treatment.
[0003] In building construction quality inspection, hollow spots are typically detected by tapping with a hollow hammer. When a hollow spot is found, it is recorded with a pen. Since the indoor height is usually around 2.8 meters, when hollow spots are found at a higher elevation, inspectors need to stand on a stool or similar tool to mark the location of the hollow spot with a pen. This recording method is not only cumbersome but also poses certain dangers. Therefore, we propose a hollow spot detection structure for building construction quality inspection. 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 hollow detection structure for building engineering quality inspection. This solves the problem that when hollow areas exist at high places in the interior of buildings, the inspectors need to stand at a high place using tools such as stools and use a recording pen to draw lines to record the location of the hollow areas. This recording method is not only cumbersome, but also poses certain technical problems.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a hollow detection structure for quality inspection of building engineering, including a hollow hammer mechanism and an adjustment mechanism disposed within the hollow hammer mechanism. The hollow hammer mechanism includes a fixed hammer rod and a folding hammer rod rotatably installed at the end of the fixed hammer rod. A hollow hammer head is provided at the end of the folding hammer rod, and a handle is provided at the beginning of the fixed hammer rod. A communicating extension cavity is provided within the fixed hammer rod and the handle. A limiting cavity and a rotating cavity are provided within the folding hammer rod, and the rotating cavity is located below the limiting cavity. The adjustment mechanism includes a threaded rod, a rotating rod, and an adjusting rod. A lifting sleeve block is threadedly installed on the threaded rod, and a conical extrusion head is provided at the upper end of the lifting sleeve block.
[0006] Preferably, the threaded rod is rotatably installed in the limiting cavity, the rotating rod is rotatably installed in the rotating cavity, the rotating rod is axially connected to the threaded rod, and a rectangular block is provided at the lower end of the rotating rod.
[0007] Preferably, the adjusting rod is disposed in the extension cavity, the beginning end of the adjusting rod extends out of the end of the handle and is equipped with an adjusting knob, the end of the adjusting rod is equipped with an adjusting sleeve block, and the upper end of the adjusting sleeve block is provided with a rectangular hole adapted to the rectangular block.
[0008] Preferably, the hollow drum hammer head is provided with a lifting movable cavity and a disc movable cavity, the disc movable cavity is located on one side of the lifting movable cavity, the conical extrusion head is conical in shape, the conical extrusion head is located in the lifting movable cavity, and the upper part of the lifting movable cavity is conical.
[0009] Preferably, the movable cavity of the disc body is provided with a mounting hole, a spring is provided in the mounting hole, and a pressing plate is installed at the end of the spring, the pressing plate being located inside the movable cavity of the disc body.
[0010] Preferably, the front end of the extrusion disc is provided with a plug-in hole, and the front end of the hollow hammer head is provided with a pen hole that communicates with the movable cavity of the disc body. A recording pen is inserted and installed in the plug-in hole, and the front part of the recording pen is located in the pen hole.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. This utility model, through the design of a threaded rod and lifting sleeve structure, allows for easy detection of hollow areas. Simply operate the adjustment knob to rotate the threaded rod, which quickly extends the recording pen for marking. Unlike traditional methods, it eliminates the need to stop the inspection to retrieve the pen before marking, significantly improving inspection and recording efficiency, saving inspection time, and accelerating work progress. Furthermore, when recording hollow areas at heights, inspectors no longer need to stand on stools or other tools to hold the recording pen, reducing the risks of working at heights and lowering the probability of falls or other safety accidents caused by climbing to record hollow areas. This ensures the personal safety of inspectors and solves the current problem where, when hollow areas are found at heights in buildings, inspectors must stand on stools or other tools and use a recording pen to mark the hollow areas – a method that is not only cumbersome but also inherently dangerous.
[0013] 2. This utility model also features a conical extrusion head structure. The conical shape of the extrusion head allows it to smoothly push the extrusion plate when it rises, enabling the recording pen to extend easily. This greatly facilitates the recording of void positions. At the same time, the arc-shaped surface of the conical extrusion head significantly reduces friction with the extrusion plate. During long-term and frequent use, the lower friction effectively reduces the wear of the conical extrusion head, thereby significantly extending the overall service life of this utility model and ensuring stable and reliable performance during repeated testing. Attached Figure Description
[0014] Figure 1 This is a front view structural diagram of the present utility model;
[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0016] Figure 3 This is a schematic diagram of the front section structure of the hammer head of this utility model;
[0017] Figure 4 This is a schematic diagram of the internal structure of the hollow hammer body of this utility model;
[0018] Figure 5 This is a schematic diagram of the adjustment mechanism structure of this utility model;
[0019] Figure 6 This is a schematic diagram of the extrusion disc structure of this utility model.
[0020] The following are the labeling instructions in the diagram: 100, Hollow drum hammer mechanism; 101, Fixed hammer rod; 102, Handle; 103, Folding hammer rod; 104, Hollow drum hammer head; 105, Lifting and lowering movable cavity; 106, Disc movable cavity; 107, Limiting cavity; 108, Rotating cavity; 109, Extension cavity; 110, Mounting hole; 200, Adjustment mechanism; 201, Threaded rod; 202, Lifting sleeve block; 203, Conical extrusion head; 204, Extrusion disc; 205, Spring; 206, Recording pen; 207, Rotating rod; 208, Rectangular block; 209, Adjusting rod; 210, Adjusting sleeve block; 211, Adjusting knob; 212, Insertion hole. Detailed Implementation
[0021] like Figures 1 to 6As shown, this utility model relates to a hollow detection structure for building engineering quality inspection, including a hollow hammer mechanism 100 and an adjustment mechanism 200 disposed within the hollow hammer mechanism 100. The hollow hammer mechanism 100 includes a fixed hammer rod 101 and a folding hammer rod 103 rotatably mounted at the end of the fixed hammer rod 101. A hollow hammer head 104 is provided at the end of the folding hammer rod 103. A handle 102 is provided at the beginning of the fixed hammer rod 101. An extension cavity 109 is provided in the fixed hammer rod 101 and the handle 102. A limiting cavity 107 and a rotating cavity 108 are provided in the folding hammer rod 103. The rotating cavity 108 is located below the limiting cavity 107. The adjustment mechanism 200 includes a threaded rod 201, a rotating rod 207, and an adjustment rod 209. A lifting sleeve block 202 is threadedly mounted on the threaded rod 201. A conical extrusion head 203 is provided at the upper end of the lifting sleeve block 202. This invention features an adjustable and retractable recording pen 206 on the hollow drum hammer mechanism 100, which greatly improves the efficiency of detection and recording, saves detection time, and increases work progress. At the same time, when recording hollow drums at high locations, it eliminates the need for inspectors to stand on stools or other tools and hold the recording pen 206 to make the recording, reducing the risks of working at heights and lowering the probability of accidents such as falls that may occur due to climbing to record the location of hollow drums, thus ensuring the personal safety of inspectors.
[0022] Specifically, the threaded rod 201 is rotatably mounted in the limiting cavity 107, and the rotating rod 207 is rotatably mounted in the rotating cavity 108. The rotating rod 207 is axially connected to the threaded rod 201, and a rectangular block 208 is provided at the lower end of the rotating rod 207. The rectangular block 208 facilitates the rotation of the rotating rod 207.
[0023] Furthermore, the adjusting rod 209 is disposed within the extension cavity 109. An adjusting knob 211 is installed at the end of the handle 102 extending from the beginning of the adjusting rod 209. An adjusting sleeve block 210 is installed at the end of the adjusting rod 209, and a rectangular hole adapted to the rectangular block 208 is provided at the upper end of the adjusting sleeve block 210. When the adjusting sleeve block 210 rises and the rectangular block 208 is located within the adjusting sleeve block 210, the adjusting sleeve block 210 can limit the rectangular block 208. When the adjusting sleeve block 210 rotates, the rectangular block 208 will also rotate accordingly, thereby achieving rotation of the threaded rod 201.
[0024] It is worth noting that the hollow drum hammer head 104 is provided with a lifting and lowering movable cavity 105 and a disc movable cavity 106. The disc movable cavity 106 is located on one side of the lifting and lowering movable cavity 105. The conical extrusion head 203 is conical in shape and is located inside the lifting and lowering movable cavity 105, with the upper part of the lifting and lowering movable cavity 105 being conical. When the conical extrusion head 203 rises, its reasonable shape allows it to smoothly push the extrusion disc 204 to move, making it easy for the recording pen 206 to extend. This greatly facilitates the recording of hollow positions. The arc-shaped surface of the conical extrusion head 203 greatly reduces friction with the extrusion disc 204. During long-term and frequent use, the lower friction effectively reduces the wear of the conical extrusion head 203.
[0025] It is worth mentioning that a mounting hole 110 is provided in the movable cavity 106 of the disc body, and a spring 205 is installed in the mounting hole 110. A pressure plate 204 is installed at the end of the spring 205, and the pressure plate 204 is located in the movable cavity 106 of the disc body. When the pressure plate 204 is no longer squeezed by the conical pressure head 203, the spring 205 can pull the pressure plate 204 back to its original position, thereby retracting the recording pen 206 into the hollow hammer head 104, preventing the recording pen 206 from being exposed and damaged.
[0026] It is worth noting that the front end of the extrusion disc 204 is provided with a insertion hole 212, and the front end of the hollow hammer head 104 is provided with a pen hole communicating with the movable cavity 106 of the disc body. A recording pen 206 is inserted and installed in the insertion hole 212, with the front part of the recording pen 206 located in the pen hole. The insertion hole 212 is provided for inserting and installing the recording pen 206. When the extrusion disc 204 moves, the recording pen 206 can be positioned so that the recording pen 206 extends out of the pen hole or retracts into the hollow hammer head 104.
[0027] Working Principle: This embodiment provides a hollow detection structure for building engineering quality inspection. In use, the handle 102 is held by hand, and the hollow hammer 104 is used to tap the building wall to detect hollow areas. When a hollow area is detected, the adjustment knob 211 is pressed upwards to extend the adjustment rod 209 upwards, causing the adjustment sleeve 210 to move upwards, positioning the rectangular block 208 within the rectangular hole of the adjustment sleeve 210. Then, the adjustment knob 211 is rotated to rotate the rotating rod 207, which in turn rotates the threaded rod 201. The rotation of the threaded rod 201 raises the lifting sleeve 202, allowing the conical extrusion head 203 to... The upward movement pushes the squeezing disc 204, which moves towards the pen hole, causing the recording pen 206 at the front end of the squeezing disc 204 to extend out of the pen hole. The recording pen 206 can be used to directly draw lines to record the location of the hollow area. This allows for convenient recording work even at high indoor locations, eliminating the need for staff to stand at a height and hold the recording pen 206 to record, thus reducing the tediousness and danger of recording the location of hollow areas at heights. When the recording pen 206 retracts, the conical squeezing head 203 descends, and the squeezing disc 204 loses the squeezing force of the conical squeezing head 203. Under the action of the spring 205, it returns to its original position, and the recording pen 206 returns to the hollow hammer head 104.
[0028] 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 hollow detection structure for quality inspection of building engineering, characterized in that, The device includes a hollow hammer mechanism (100) and an adjustment mechanism (200) disposed within the hollow hammer mechanism (100). The hollow hammer mechanism (100) includes a fixed hammer rod (101) and a folding hammer rod (103) rotatably mounted at the end of the fixed hammer rod (101). A hollow hammer head (104) is provided at the end of the folding hammer rod (103). A handle (102) is provided at the beginning of the fixed hammer rod (101). The fixed hammer rod (101) and the handle (102) are equipped with... The extension cavity (109) is provided. The folding hammer rod (103) is provided with a limiting cavity (107) and a rotating cavity (108). The rotating cavity (108) is located below the limiting cavity (107). The adjustment mechanism (200) includes a threaded rod (201), a rotating rod (207) and an adjusting rod (209). A lifting sleeve block (202) is threaded on the threaded rod (201). A conical extrusion head (203) is provided at the upper end of the lifting sleeve block (202).
2. The hollow detection structure for building engineering quality inspection according to claim 1, characterized in that, The threaded rod (201) is rotatably installed in the limiting cavity (107), and the rotating rod (207) is rotatably installed in the rotating cavity (108). The rotating rod (207) is axially connected to the threaded rod (201), and a rectangular block (208) is provided at the lower end of the rotating rod (207).
3. The hollow detection structure for building engineering quality inspection according to claim 2, characterized in that, The adjusting rod (209) is disposed in the extension cavity (109). The beginning end of the adjusting rod (209) extends out of the end of the handle (102) and is equipped with an adjusting knob (211). An adjusting sleeve block (210) is installed at the end of the adjusting rod (209). The upper end of the adjusting sleeve block (210) is provided with a rectangular hole that matches the rectangular block (208).
4. A hollow detection structure for building engineering quality inspection according to claim 3, characterized in that, The hollow drum hammer (104) is provided with a lifting movable cavity (105) and a disc movable cavity (106). The disc movable cavity (106) is located on one side of the lifting movable cavity (105). The conical extrusion head (203) is conical in shape and is located inside the lifting movable cavity (105). The upper part of the lifting movable cavity (105) is conical.
5. A hollow detection structure for building engineering quality inspection according to claim 4, characterized in that, An installation hole (110) is provided in the movable cavity (106) of the disc body. A spring (205) is provided in the installation hole (110). A pressing plate (204) is installed at the end of the spring (205). The pressing plate (204) is located in the movable cavity (106) of the disc body.
6. A hollow detection structure for building engineering quality inspection according to claim 5, characterized in that, The front end of the extrusion disc (204) is provided with a plug hole (212), and the front end of the hollow drum hammer (104) is provided with a pen hole that communicates with the disc body movable cavity (106). A recording pen (206) is inserted and installed in the plug hole (212), and the front part of the recording pen (206) is located in the pen hole.