Concrete rebound hammer for construction engineering quality detection

Abstract

The utility model relates to the rebound hammer technical field discloses the concrete rebound hammer of constructional engineering quality detection, including rebound hammer body, the right side fixed connection of rebound hammer body has the mounting block, the inside slide connection of mounting block has the press and go up post, the outside fixed connection of press and go up post has the limit rod, the utility model discloses through press and go up post drive limit rod and slide in mounting block inside and extrude reset spring, then after the installation cover is covered in mounting block outside, release press and go up post, make reset spring drive limit rod reset and carry out the location to installation cover, and then fixed installation shell, subsequently start drive motor and drive polishing disc rotation, make polishing disc and detection part contact and carry out the polishing cleaning action to the surface of detection part, thereby realized the beneficial effect that removes the surface impurity of detection part, guarantees the evenness of detection surface, provides accurate detection basis for subsequent concrete rebound detection, effectively avoids the detection data deviation problem that the detection surface is not clean or uneven leads to.

Description

Technical Field

[0001] This utility model relates to the field of rebound hammer technology, and in particular to a concrete rebound hammer for quality testing in building engineering. Background Technology

[0002] With the increasing demands for industrialized construction and structural safety, the traditional method of manually testing concrete strength by tapping is no longer sufficient to meet the needs of refined management in modern engineering. Since the invention of the rebound hammer prototype, this non-destructive testing technology has undergone more than half a century of iterative upgrades and has gradually evolved into an intelligent system that integrates materials science, electronic sensing, and data processing. In major engineering projects such as super high-rise buildings, bridges, and tunnels, its non-destructive testing advantages have significantly reduced the cost of quality acceptance and have become one of the core equipment of the quality control system on construction sites.

[0003] Traditional concrete testing devices have significant drawbacks. Regarding surface preparation, they lack a convenient integrated grinding structure, making it difficult to quickly fix grinding components. Furthermore, manual cleaning and grinding of the surface often requires additional tools, which is not only cumbersome and inefficient but also makes it difficult to ensure a smooth and clean surface after grinding. Differences in manual operation can easily lead to residual impurities or insufficient flatness on the surface, resulting in deviations in subsequent test data. In terms of testing stability, traditional devices struggle to provide stable support around the testing location. Testing often relies on the operator holding the device or simple fixation, which can easily cause the instrument to shift or experience uneven stress during testing due to hand movement or insecure fixation. This makes it difficult to guarantee the accuracy of measurement data and accurately reflect the actual quality of the concrete structure, posing significant risks to the quality inspection of building engineering projects. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a concrete rebound hammer for testing the quality of building engineering.

[0005] This utility model adopts the following technical solution: a concrete rebound hammer for testing the quality of building engineering, including a rebound hammer body, a mounting block fixedly connected to the right side of the rebound hammer body, a pressing column slidably connected inside the mounting block, a limit rod fixedly connected to the outside of the pressing column, and a return spring fixedly connected to the bottom of the pressing column, and further comprising: The support mechanism includes a second connecting frame fixedly connected to the outside of the rebounder body, and a sliding frame slidably connected inside the second connecting frame; A grinding mechanism, comprising a mounting sleeve fitted onto the outside of a mounting block, a mounting housing fixedly connected to the right side of the mounting sleeve, and a grinding disc disposed on the right side of the mounting housing.

[0006] As a further improvement to the above solution, the limiting rod is slidably connected inside the mounting block, the reset spring is fixedly connected between the pressing post and the mounting block, and the rebound device body is externally fixedly connected to a first connecting frame.

[0007] By utilizing the elastic recovery characteristics of the reset spring, the pressing column is automatically reset after release, allowing the limit rod to accurately engage with the mounting sleeve groove, thus achieving rapid locking and unlocking. Furthermore, the first connecting frame, as a support base, enhances the rigidity and torsional resistance of the overall structure, providing a stable foundation for subsequent operations.

[0008] As a further improvement to the above solution, a connecting block is fixedly connected to the left side of the first connecting frame, and a threaded rod is rotatably connected inside the first connecting frame. The end of the threaded rod away from the first connecting frame is rotatably connected inside the second connecting frame.

[0009] Through the above technical solution, the connecting block strengthens the fixing strength between the two connecting frames, preventing deformation under stress. The threaded guide of the threaded rod allows the sliding frame to move smoothly along the axial direction, avoiding the problem of unstable support caused by offset, while facilitating precise control of the support position.

[0010] As a further improvement to the above solution, a turntable is fixedly connected to the right side of the threaded rod, the sliding frame is threadedly connected to the outside of the threaded rod, and a support plate is rotatably connected inside the sliding frame.

[0011] The above technical solution allows for control by manually rotating the turntable, which is simple to operate and has high positioning accuracy; the support plate has a large contact area, which distributes pressure evenly, effectively protecting the tested surface from damage, while improving the verticality maintenance capability of the rebound hammer during operation.

[0012] As a further improvement to the above solution, a limiting post is fixedly connected inside the first connecting frame, the end of the limiting post away from the first connecting frame is fixedly connected inside the second connecting frame, and the sliding frame is slidably connected to the outside of the limiting post.

[0013] Through the above technical solution, the combination of linear slide rail and limiting post enables the sliding frame to perform linear reciprocating motion, eliminating the risk of skewing. The two ends of the limiting post are fixed to the double connecting frame to form a rigid frame, which further improves the system's anti-interference capability and long-term reliability.

[0014] As a further improvement to the above solution, a barrier cover is fixedly connected to the right side of the mounting housing, a drive motor is fixedly connected to the bottom of the mounting housing, and a rotating rod is fixedly connected to the output end of the drive motor.

[0015] As a further improvement to the above solution, the rotating rod is rotatably connected inside the mounting housing, a first bevel gear is fixedly connected to the outside of the rotating rod, and a transmission rod is rotatably connected inside the mounting housing.

[0016] Through the above technical solution, the first bevel gear and the second bevel gear change the transmission direction to adapt to the layout requirements in a limited space; and ensure high torque transmission efficiency to ensure stable operation even under high-speed rotation.

[0017] As a further improvement to the above solution, a second bevel gear is fixedly connected to the outside of the transmission rod, the second bevel gear meshing with the first bevel gear, and the grinding disc is fixedly connected to the right side of the transmission rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a pressing column to drive a limiting rod to slide inside the mounting block and compress a reset spring. After the mounting sleeve is placed over the mounting block, the pressing column is released, causing the reset spring to drive the limiting rod to reset and limit the mounting sleeve, thus fixing the mounting shell. Subsequently, a drive motor is activated to rotate the rotating rod and the external first bevel gear. The meshing transmission between the first and second bevel gears drives the transmission rod and the right-side grinding disc to rotate. This mechanism causes the grinding disc to contact the testing part and grind and clean its surface, thereby removing impurities and ensuring a smooth surface. This provides a precise foundation for subsequent concrete rebound testing and effectively avoids data deviations caused by unclean or uneven testing surfaces.

[0019] This invention releases the limiting rod from the mounting sleeve by pressing the pressing column, causing it to descend. After removing the mounting shell and reversing its direction, the rotating disc drives the threaded rod to rotate. Through the threaded connection between the threaded rod and the sliding frame, and the limitation of the sliding frame's sliding direction by the limiting column, the sliding frame slides inside the second connecting frame. This causes the support plate to operate in contact with the surrounding structure of the detection position, resulting in a stable support state between the rebound hammer body and the surrounding area of ​​the detection position during testing. This improves the stability of the rebound hammer body during testing, prevents instrument shaking that could cause the detection position to shift or uneven force, and further ensures the accuracy of the measurement data, ensuring that each test result truly reflects the actual quality of the concrete structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is an exploded view of the overall structure of this utility model; Figure 4 This is a longitudinal sectional view of the overall structure of this utility model; Figure 5 This is a schematic diagram of the support mechanism structure of this utility model; Figure 6 This utility model Figure 3 Enlarged view of section A in the middle; Explanation of key symbols: 1. Rebound hammer body; 2. Support mechanism; 3. Grinding mechanism; 11. Mounting block; 12. Pressing post; 13. Limiting rod; 14. Return spring; 201. First connecting frame; 202. Connecting block; 203. Second connecting frame; 204. Threaded rod; 205. Turntable; 206. Sliding frame; 207. Support plate; 208. Limiting post; 301. Mounting sleeve; 302. Mounting shell; 303. Barrier cover; 304. Drive motor; 305. Rotating rod; 306. First bevel gear; 307. Transmission rod; 308. Second bevel gear; 309. Grinding disc. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] Example: Please combine Figure 1-6 The concrete rebound hammer for building engineering quality testing in this embodiment includes a rebound hammer body 1, a mounting block 11 fixedly connected to the right side of the rebound hammer body 1, a pressing column 12 slidably connected inside the mounting block 11, a limit rod 13 fixedly connected to the outside of the pressing column 12, and a return spring 14 fixedly connected to the bottom of the pressing column 12. It also includes: Support mechanism 2, the support mechanism 2 includes a second connecting frame 203 fixedly connected to the outside of the rebounder body 1, and a sliding frame 206 slidably connected inside the second connecting frame 203; The grinding mechanism 3 includes a mounting sleeve 301 that is sleeved on the outside of the mounting block 11. A mounting housing 302 is fixedly connected to the right side of the mounting sleeve 301, and a grinding disc 309 is provided on the right side of the mounting housing 302.

[0023] The limiting rod 13 is slidably connected inside the mounting block 11, the reset spring 14 is fixedly connected between the pressing post 12 and the mounting block 11, and the first connecting frame 201 is fixedly connected to the outside of the rebound device body 1.

[0024] A connecting block 202 is fixedly connected to the left side of the first connecting frame 201, and a threaded rod 204 is rotatably connected inside the first connecting frame 201. The end of the threaded rod 204 away from the first connecting frame 201 is rotatably connected to the inside of the second connecting frame 203.

[0025] A turntable 205 is fixedly connected to the right side of the threaded rod 204, and a sliding frame 206 is threadedly connected to the outside of the threaded rod 204. A support plate 207 is rotatably connected inside the sliding frame 206.

[0026] The first connecting frame 201 is fixedly connected to a limiting post 208. The end of the limiting post 208 away from the first connecting frame 201 is fixedly connected to the inside of the second connecting frame 203. The sliding frame 206 is slidably connected to the outside of the limiting post 208.

[0027] Rotating the turntable 205 causes the threaded rod 204 to rotate, and through the rotation of the threaded rod 204, the sliding frame 206 connected to its external thread slides along the limiting post 208 inside the second connecting frame 203, thereby making the support plate 207 contact the area around the required detection position and supporting the rebound hammer body 1.

[0028] A barrier cover 303 is fixedly connected to the right side of the mounting housing 302, and a drive motor 304 is fixedly connected to the bottom of the mounting housing 302. A rotating rod 305 is fixedly connected to the output end of the drive motor 304.

[0029] The rotating rod 305 is rotatably connected inside the mounting housing 302. The first bevel gear 306 is fixedly connected to the outside of the rotating rod 305, and the transmission rod 307 is rotatably connected inside the mounting housing 302.

[0030] A second bevel gear 308 is fixedly connected to the outside of the transmission rod 307. The second bevel gear 308 meshes with the first bevel gear 306. The grinding disc 309 is fixedly connected to the right side of the transmission rod 307.

[0031] The drive motor 304 is started to drive the rotating rod 305 to rotate, which in turn drives the first bevel gear 306 to rotate. Since the first bevel gear 306 and the second bevel gear 308 mesh with each other, when the first bevel gear 306 rotates, it will drive the transmission rod 307 inside the mounting housing 302 to rotate through the second bevel gear 308. This causes the transmission rod 307 to drive the grinding disc 309 on its right side to rotate. At this time, the grinding disc 309 can be brought into contact with the part to be tested, so that the grinding disc 309 can grind the part to be tested.

[0032] The implementation principle of the concrete rebound hammer for building engineering quality testing in this embodiment is as follows: Before use, press the pressing column 12 to make the pressing column 12 drive the limiting rod 13 to slide inside the mounting block 11 and squeeze the return spring 14. At this time, the mounting sleeve 301 can be put on the outside of the mounting block 11. After it is put on, the pressing column 12 can be released, so that the return spring 14 drives the limiting rod 13 to reset through the pressing column 12, and the limiting rod 13 limits the mounting sleeve 301, thus fixing the mounting sleeve 301 and fixing the mounting shell 302. After fixing, the drive motor 304 can be started to drive the... The rotating rod 305 rotates inside the mounting housing 302, thereby driving the first bevel gear 306 outside it to rotate. Since the first bevel gear 306 and the second bevel gear 308 mesh with each other, when the first bevel gear 306 rotates, it will drive the transmission rod 307 inside the mounting housing 302 to rotate through the second bevel gear 308. This will cause the transmission rod 307 to drive the grinding disc 309 on its right side to rotate. At this time, the grinding disc 309 can contact the part to be tested, so that the grinding disc 309 can grind the part to be tested and clean the surface of the part to be tested, making the subsequent test more accurate. After grinding, the push-button column 12 can be pressed to lower the limit rod 13, releasing the limit rod 13 from the mounting sleeve 301. At this time, the mounting shell 302 can be removed. After removal, the direction can be reversed, and the turntable 205 can be rotated to drive the threaded rod 204 to rotate. Through the rotation of the threaded rod 204, the sliding frame 206 connected by its external thread can slide along the limit post 208 inside the second connecting frame 203, so that the support plate 207 contacts the area around the required detection position, making the rebound hammer body 1 more stable during detection and making the measurement data more accurate.

[0033] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A concrete rebound hammer for quality testing of building construction projects, comprising a rebound hammer body (1), wherein a mounting block (11) is fixedly connected to the right side of the rebound hammer body (1), a pressing column (12) is slidably connected inside the mounting block (11), a limit rod (13) is fixedly connected to the outside of the pressing column (12), and a return spring (14) is fixedly connected to the bottom of the pressing column (12), characterized in that, Also includes: Support mechanism (2), the support mechanism (2) includes a second connecting frame (203) fixedly connected to the outside of the rebounder body (1), and a sliding frame (206) is slidably connected inside the second connecting frame (203); The grinding mechanism (3) includes a mounting sleeve (301) sleeved on the outside of the mounting block (11), a mounting shell (302) is fixedly connected to the right side of the mounting sleeve (301), and a grinding disc (309) is provided on the right side of the mounting shell (302).

2. The concrete rebound hammer for building engineering quality testing as described in claim 1, characterized in that: The limiting rod (13) is slidably connected inside the mounting block (11), the reset spring (14) is fixedly connected between the pressing column (12) and the mounting block (11), and the rebound device body (1) is fixedly connected to the outside of the first connecting frame (201).

3. The concrete rebound hammer for testing the quality of building construction as described in claim 2, characterized in that: A connecting block (202) is fixedly connected to the left side of the first connecting frame (201), and a threaded rod (204) is rotatably connected inside the first connecting frame (201). The end of the threaded rod (204) away from the first connecting frame (201) is rotatably connected inside the second connecting frame (203).

4. The concrete rebound hammer for testing the quality of building construction as described in claim 3, characterized in that: A turntable (205) is fixedly connected to the right side of the threaded rod (204), and a sliding frame (206) is threadedly connected to the outside of the threaded rod (204). A support plate (207) is rotatably connected inside the sliding frame (206).

5. The concrete rebound hammer for building engineering quality testing as described in claim 4, characterized in that: The first connecting frame (201) is fixedly connected to a limiting post (208), and the end of the limiting post (208) away from the first connecting frame (201) is fixedly connected to the inside of the second connecting frame (203). The sliding frame (206) is slidably connected to the outside of the limiting post (208).

6. The concrete rebound hammer for testing the quality of building construction as described in claim 5, characterized in that: A barrier cover (303) is fixedly connected to the right side of the mounting housing (302), a drive motor (304) is fixedly connected to the bottom of the mounting housing (302), and a rotating rod (305) is fixedly connected to the output end of the drive motor (304).

7. The concrete rebound hammer for testing the quality of building construction as described in claim 6, characterized in that: The rotating rod (305) is rotatably connected inside the mounting housing (302), and a first bevel gear (306) is fixedly connected to the outside of the rotating rod (305). A transmission rod (307) is rotatably connected inside the mounting housing (302).

8. The concrete rebound hammer for testing the quality of building construction as described in claim 7, characterized in that: The transmission rod (307) is externally fixedly connected to a second bevel gear (308), which meshes with the first bevel gear (306). The grinding disc (309) is fixedly connected to the right side of the transmission rod (307).

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