Building wall strength detection device
By using a split-type rebound hammer with horizontal support and a self-cleaning mechanism, the problems of rebound hammer tilting and impurity adhesion are solved, thus achieving accurate test data and a long instrument life.
Patent Information
- Application Number
- CN202520425522.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-12
AI Technical Summary
When the rebound hammer is held in the hand, it is easy to tilt, which causes the measuring end to be non-horizontal with the wall, resulting in deviation of the test data. In addition, impurities are easy to stick to the measuring end, which also leads to data errors.
A split-type rebound hammer was designed, equipped with a horizontal support mechanism and a self-cleaning mechanism. The instrument is kept horizontal by a suction cup, and the suction cup is deployed using a telescopic rod and connectors to ensure horizontality. The self-cleaning mechanism cleans impurities using a toothed disc and a brush plate.
Effectively maintain the rebound hammer's measuring end level with the wall to avoid data deviation, clean up impurities, ensure testing accuracy, and extend the instrument's lifespan.
Smart Images
Figure CN223940704U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engineering construction testing technology, specifically a building wall strength testing device. Background Technology
[0002] Building wall strength testing is a key part of engineering quality control. Rebound hammers, as non-destructive testing equipment, are widely used in the industry. This device is based on the principle of energy rebound. It uses a spring-driven hammer to impact the wall surface and uses the correlation between the rebound value and the material strength to achieve the test. The hammer is impacted and the scale value is read by hand. Its advantages are convenient operation, low cost and no need to damage the wall structure.
[0003] When using a rebound hammer to test the strength of a wall, the hammer tends to tilt when held against the wall, causing the measuring end to be non-horizontal and resulting in deviations in the test data. Therefore, there is an urgent need to develop a building wall strength testing device to solve these practical problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a building wall strength testing device to solve the aforementioned problems.
[0005] To achieve the above objectives, this utility model provides a building wall strength testing device through the following technical solution: a split-type rebound hammer, wherein a digital display of the rebound hammer is provided on one side of the split-type rebound hammer, and the split-type rebound hammer is electrically connected to the digital display of the rebound hammer through a wire.
[0006] It also includes a horizontal support mechanism, which includes a fixed sleeve disposed on the outside of the split-type rebounder. Multiple sets of shaft brackets are equidistantly installed on the outside of the fixed sleeve. A telescopic rod is rotatably installed on the inside of the shaft bracket. A suction cup is movably installed at the bottom end of the telescopic rod through a connecting shaft. A movable shaft seat is movably installed on the outside of the split-type rebounder, and the movable shaft seat is located on one side of the fixed sleeve. Multiple sets of connecting parts are movably installed on the outside of the movable shaft seat, and one end of the connecting parts is movably connected to the telescopic rod.
[0007] Preferably, a stainless steel layer is sleeved on the outer side of the split-type rebound hammer, and a polyether ether ketone sleeve is sleeved on the inner side of the stainless steel layer. The inner side of the polyether ether ketone sleeve is fixedly connected to the outer side of the split-type rebound hammer, and the outer side of the stainless steel layer is fixedly connected to the inner side of the fixed sleeve. The horizontal bubble meter extends into the interior of the stainless steel layer.
[0008] Preferably, the outer side of the stainless steel layer is coated with a waterproof coating.
[0009] Preferably, a cap is fitted onto one end of the split-type rebounder, and a sealing rubber strip is fitted onto the inner side of the cap.
[0010] Preferably, a self-cleaning mechanism is provided on one side of the cap. The self-cleaning mechanism includes a rotating seat rotatably mounted inside the cap. A toothed disc extending into the cap is fixedly mounted on one side of the rotating seat. A rack is meshed on one side of the toothed disc. A brush plate for cleaning the measuring end of the split rebound hammer is attached to the inside of the rotating seat.
[0011] Preferably, a horizontal bubble meter is fixedly installed on the outside of the split-type rebound hammer, and the horizontal bubble meter is located on the other side of the fixed sleeve.
[0012] This invention provides a device for testing the strength of building walls. Compared with the prior art, it has the following advantages.
[0013] 1. The operator pulls the movable shaft seat to move it outside the split-type rebound hammer, causing the connecting parts to move synchronously. This drives the telescopic rod to extend outward around the shaft frame. Then, the telescopic rod is pulled to make the bottom suction cup adhere to the wall surface and fix it in place. This ensures that the split-type rebound hammer remains horizontal when measuring the wall strength, solving the problem of the measuring end not being horizontal to the wall and the deviation of the test data caused by the tilt of the handheld rebound hammer.
[0014] 2. Press the rack. As the rack and the toothed disc mesh, the linear motion of the rack will drive the toothed disc to rotate. The rotating toothed disc will drive the rotating seat to rotate synchronously. The rotating seat will drive the brush plate to rotate synchronously. The rotating brush plate will make full contact with the outer side of the measuring end of the split rebound hammer, cleaning the outer side of the measuring end and effectively removing impurities adhering to the outer side of the measuring end. This will prevent impurities from adhering to the outer side of the measuring end of the split rebound hammer, thus avoiding errors in the rebound data of the measuring end when using the split rebound hammer later. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram showing the installation position of the self-cleaning mechanism of this utility model;
[0017] Figure 3 This is a schematic diagram of the self-cleaning mechanism assembly of this utility model;
[0018] Figure 4 This is a partial structural diagram of the self-cleaning mechanism of this utility model;
[0019] Figure 5 This is a partial structural diagram of the horizontal support mechanism of this utility model;
[0020] Figure 6 This is a partial structural diagram of the polyetheretherketone sleeve of this utility model.
[0021] In the diagram: 1. Split-type rebound hammer; 2. Rebound hammer digital display; 3. Horizontal support mechanism; 301. Fixed sleeve; 302. Shaft bracket; 303. Telescopic rod; 304. Suction cup; 305. Moving shaft seat; 4. Cap; 401. Sealing rubber strip; 5. Self-cleaning mechanism; 501. Rotating seat; 502. Gear plate; 503. Gear rack; 504. Brush plate; 6. Stainless steel layer; 601. Polyetheretherketone sleeve; 7. Waterproof coating; 8. Horizontal bubble meter. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] First implementation method:
[0024] refer to Figure 1-3 , Figure 5-6 A building wall strength testing device includes a split-type rebound hammer 1, a rebound hammer digital display 2 is provided on one side of the split-type rebound hammer 1, and the split-type rebound hammer 1 is electrically connected to the rebound hammer digital display 2 through a wire.
[0025] It also includes a horizontal support mechanism 3, which includes a fixed sleeve 301 disposed on the outside of the split-type rebounder 1. Multiple sets of shaft brackets 302 are equidistantly installed on the outside of the fixed sleeve 301. A telescopic rod 303 is rotatably installed on the inside of the shaft bracket 302. A suction cup 304 is movably installed at the bottom end of the telescopic rod 303 through a connecting shaft. A movable shaft seat 305 is movably installed on the outside of the split-type rebounder 1, and the movable shaft seat 305 is located on one side of the fixed sleeve 301. Multiple sets of connecting parts are movably installed on the outside of the movable shaft seat 305, and one end of the connecting part is movably connected to the telescopic rod 303.
[0026] A stainless steel layer 6 is fitted on the outer side of the split-type rebound hammer 1, and a polyether ether ketone sleeve 601 is fitted on the inner side of the stainless steel layer 6. The inner side of the polyether ether ketone sleeve 601 is fixedly connected to the outer side of the split-type rebound hammer 1, and the outer side of the stainless steel layer 6 is fixedly connected to the inner side of the fixed sleeve 301. The horizontal bubble meter 8 extends into the interior of the stainless steel layer 6 on one side.
[0027] The stainless steel layer 6 is coated with a waterproof coating 7 on the outside. One end of the split-type rebound hammer 1 is fitted with a cap 4, and a sealing rubber strip 401 is fitted on the inside of the cap 4. A horizontal bubble meter 8 is fixedly installed on the outside of the split-type rebound hammer 1, and the horizontal bubble meter 8 is located on the other side of the fixed sleeve 301.
[0028] The operator pulls the movable shaft seat 305 to move it outside the split-type rebound hammer 1. During the movement, the outer connecting piece is moved synchronously. The synchronously moved connecting piece can move the telescopic rod 303, so that the telescopic rod 303 unfolds outward with the shaft frame 302 as the axis. After unfolding, pulling the telescopic rod 303 causes the bottom suction cup 304 to contact the wall surface and be attached and fixed. This ensures that the split-type rebound hammer 1 remains horizontal when measuring the wall strength. This avoids the problem that the rebound hammer is easy to tilt when it is held against the wall, which causes the measuring end to be non-horizontal with the wall and thus leads to the deviation of the rebound hammer test data.
[0029] The bubble level 8 allows operators to easily understand the horizontal status of the device, ensuring that the split-type rebound hammer 1 and the wall are level. The split-type rebound hammer 1 and the digital display 2 are both ZT201 digital display split-type rebound hammers. The working principle of the split-type rebound hammer 1 and the digital display 2 is as follows: In the mechanical impact device at the detection end of the split-type rebound hammer 1, the hammer impacts the concrete surface along the impact rod under the action of the impact spring, causing elastic deformation and rebound. During the rebound process, the non-contact metal reflective grating sensor built into the split-type rebound hammer 1 captures the rebound displacement of the hammer in real time, converts it into an electrical signal, and calculates the rebound value. The data is transmitted to the digital display 2 in real time through the wire. After receiving the data, the digital display 2 automatically calculates and displays the compressive strength of the concrete based on the built-in nationally unified strength measurement curve, thus facilitating operators to understand the local concrete strength data of the wall.
[0030] The cap 4, in conjunction with the sealing rubber strip 401, facilitates the storage and protection of the measuring end of the split rebound hammer 1. The stainless steel layer 6 provides mechanical protection, while the polyetheretherketone sleeve 601 provides chemical protection and resistance to cement alkaline corrosion. At the same time, the buffer structure formed by the double-material sleeve can reduce stress interference during testing. In construction engineering field applications, this combination can significantly extend the service life of the instrument and maintain testing accuracy. The waterproof coating 7 can prevent water vapor from corroding the stainless steel layer 6, thus avoiding the problem of shortening the service life of the stainless steel layer 6.
[0031] Second implementation method:
[0032] After the wall strength is tested using the device, impurities are easily detached from the wall surface, which then cause the impurities to adhere to the outside of the rebound hammer measuring end. This results in the measuring end being affected by external impurities when the rebound hammer is used subsequently, causing errors in the rebound data of the rebound hammer.
[0033] refer to Figure 1-4In the second embodiment of this utility model, a self-cleaning mechanism 5 is provided on one side of the cap 4. The self-cleaning mechanism 5 includes a rotating seat 501 rotatably installed inside the cap 4. A toothed disc 502 extending out of the cap 4 is fixedly installed on one side of the rotating seat 501. A rack 503 is meshed on one side of the toothed disc 502. A brush plate 504 for cleaning the measuring end of the split rebound meter 1 is attached to the inside of the rotating seat 501.
[0034] When it is necessary to clean the measuring end of the split-type rebound hammer 1, the rack 503 is manually pressed. Since the rack 503 and the toothed disc 502 mesh with each other, the linear motion of the rack 503 will drive the toothed disc 502 to rotate. The rotating toothed disc 502 drives the rotating seat 501 to rotate synchronously. The rotating rotating seat 501 can drive the brush plate 504 to rotate synchronously. The rotating brush plate 504 will fully contact and clean the outside of the measuring end of the split-type rebound hammer 1, avoiding the adhesion of impurities to the outside of the measuring end of the split-type rebound hammer 1, which would cause errors in the rebound data of the measuring end when using the split-type rebound hammer 1 in the future.
[0035] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A building wall strength testing device, comprising a split-type rebound hammer (1), wherein a rebound hammer digital display (2) is provided on one side of the split-type rebound hammer (1), and the split-type rebound hammer (1) is electrically connected to the rebound hammer digital display (2) via a wire, characterized in that: It also includes a horizontal support mechanism (3), which includes a fixed sleeve (301) disposed on the outside of the split rebounder (1). Multiple sets of shaft brackets (302) are equidistantly installed on the outside of the fixed sleeve (301). A telescopic rod (303) is rotatably installed on the inside of the shaft bracket (302). A suction cup (304) is movably installed at the bottom end of the telescopic rod (303) through a connecting shaft. A movable shaft seat (305) is movably installed on the outside of the split rebounder (1), and the movable shaft seat (305) is located on one side of the fixed sleeve (301). Multiple sets of connecting parts are movably installed on the outside of the movable shaft seat (305), and one end of the connecting part is movably connected to the telescopic rod (303).
2. The building wall strength testing device according to claim 1, characterized in that: The split-type rebound hammer (1) is fitted with a stainless steel layer (6) on the outside, and a polyether ether ketone sleeve (601) is fitted with the inside of the stainless steel layer (6). The inside of the polyether ether ketone sleeve (601) is fixedly connected to the outside of the split-type rebound hammer (1), and the outside of the stainless steel layer (6) is fixedly connected to the inside of the fixed sleeve (301). The horizontal bubble meter (8) extends into the inside of the stainless steel layer (6) on one side.
3. The building wall strength testing device according to claim 2, characterized in that: The stainless steel layer (6) is coated with a waterproof coating (7) on its outer side.
4. The building wall strength testing device according to claim 1, characterized in that: The split-type rebounder (1) has a cap (4) fitted onto one end, and a sealing rubber strip (401) is fitted onto the inner side of the cap (4).
5. The building wall strength testing device according to claim 4, characterized in that: A self-cleaning mechanism (5) is provided on one side of the cap (4). The self-cleaning mechanism (5) includes a rotating seat (501) rotatably installed inside the cap (4). A toothed disc (502) extending out of the cap (4) is fixedly installed on one side of the rotating seat (501). A rack (503) is meshed on one side of the toothed disc (502). A brush plate (504) for cleaning the measuring end of the split rebound hammer (1) is pasted on the inside of the rotating seat (501).
6. The building wall strength testing device according to claim 1, characterized in that: A horizontal bubble meter (8) is fixedly installed on the outside of the split rebound hammer (1), and the horizontal bubble meter (8) is located on the other side of the fixed sleeve (301).