Rebounding device for nondestructive testing of compressive strength of engineering concrete

Abstract

The utility model relates to a springback device for nondestructive testing of compressive strength of engineering concrete, and belongs to the technical field of concrete detection.The springback device comprises a bottom plate, a movable assembly is arranged at the top of the bottom plate, a connecting plate is fixed to the top of the bottom plate, a threaded rod is rotatably connected to the top of the connecting plate, and a rotating disc is fixed to the top of the threaded rod; the outer side of the threaded rod is in threaded connection with a movable sleeve, a limiting block is fixed to the back face of the movable sleeve, and a drill bit is fixed to the bottom of the rotating rod. According to the springback device for nondestructive testing of the compressive strength of the engineering concrete, the use convenience and stability of the device are improved through the arrangement of the movable assembly, further improvement of the use stability of the device is facilitated through rotation of a rotating rod, and detection of the concrete strength is facilitated through the arrangement of the detection mechanism; through vertical displacement of the detection mechanism, multi-point detection of concrete is achieved, the detection effect is improved, and the whole device is convenient and stable to use and good in use effect.

Description

Technical Field

[0001] This utility model relates to the field of concrete testing technology, specifically a rebound device for non-destructive testing of the compressive strength of engineering concrete. Background Technology

[0002] Concrete is one of the most important civil engineering materials in modern times. It is an artificial stone material made by mixing cementitious materials, aggregates and water in a certain proportion, mixing and vibrating to form a compacted shape, and curing under certain conditions. At present, there are many methods for testing the compressive strength of concrete. For testing the compressive strength of concrete in structures or components, methods such as rebound method, ultrasonic rebound combined method, post-installed pull-out method or core drilling method can be used. The rebound method involves striking the concrete surface with a force transmission rod and measuring the distance the hammer bounces back. The ratio of the rebound distance to the initial length of the spring is used as a strength-related index to estimate the strength of the concrete.

[0003] For example, a Chinese patent (publication number: CN214309997U) discloses a concrete compressive strength testing device using the rebound method, which includes a testing box. Inside the testing box is a first lead screw. A motor is fixedly installed on the outer wall of the testing box. A movable seat is threaded onto the first lead screw. An electric telescopic rod is fixedly connected to the bottom of the movable seat. A rebound hammer is fixedly connected to the power output end of the electric telescopic rod. An operating table is fixedly connected to the bottom of the testing box. A fixed plate is fixedly connected to one side of the operating table surface. A threaded hole is opened on the fixed plate, and a threaded rod is threaded into the threaded hole. A top rod is fixedly connected to one end of the threaded rod. A clamping plate is movably connected to the end of the threaded rod away from the top rod. A push plate is provided on one side of the clamping plate. A base is fixedly connected to the bottom of the testing box. The push plate allows concrete test blocks to be pushed out of the operating table for cleaning, saving time and effort and reducing the workload of staff. The clamping plate facilitates clamping and fixing the concrete test blocks.

[0004] This patent uses a rebound hammer to impact a concrete block after clamping it to test its strength. However, this device requires a separate concrete test block, which is inconvenient. Therefore, a rebound hammer device for non-destructive testing of the compressive strength of engineering concrete is proposed to solve the above-mentioned problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rebound device for non-destructive testing of the compressive strength of engineering concrete, which has the advantages of good performance and solves the problem of inconvenient strength testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rebound device for non-destructive testing of the compressive strength of engineering concrete, comprising a base plate, two movable components on the top of the base plate, a connecting plate fixed to the top of the base plate, a threaded rod rotatably connected to the top of the connecting plate, a rotating disk fixed to the top of the threaded rod, a movable sleeve threadedly connected to the outer side of the threaded rod, a limiting block slidably connected to the connecting plate fixed to the back of the movable sleeve, a rotating rod extending to the inner side of the base plate rotatably connected to the inner side of the threaded rod, a rotating disk fixed to the top of the rotating rod, a threaded disk threadedly connected to the inner side of the base plate fixed to the outer side of the rotating rod, a drill bit fixed to the bottom of the rotating rod, a testing mechanism on the front of the movable sleeve, and a collecting component on the testing mechanism;

[0007] The detection mechanism includes a fixed shell, a cylinder, a power supply battery, a movable column, a speed sensor, a guide sleeve, an impact rod, a fixed plate, a return spring, a pressure sensor, and an impact head. The fixed shell is fixed to the front of the movable sleeve, the right side of the fixed shell is fixed to the cylinder, the power supply battery is fixed to the right side of the cylinder, the movable shaft of the cylinder passes through the right wall of the fixed shell and is fixed to the movable column, the speed sensor is fixed to the outside of the movable column, the guide sleeve is fixed to the inside of the fixed shell, the impact rod is fixed to the left side of the movable column, the impact rod is slidably connected to the inside of the guide sleeve and passes through to the outside of the fixed shell, the fixed plate is fixed to the outside of the impact rod, the impact rod is slidably connected to the inside of the guide sleeve, the return spring is fixed between the left inner wall of the guide sleeve and the fixed plate, the pressure sensor is fixed to the left side of the impact rod, and the impact head is fixed to the left side of the pressure sensor.

[0008] By adopting this technical solution, the movable components facilitate convenient and stable displacement of the entire device. The drilling process further enhances the stability of the device. The detection mechanism enables the device to detect the strength of concrete, which is beneficial for its stable use. The collection components not only locate the detection points but also collect debris, which improves the device's performance.

[0009] Furthermore, a sliding channel is provided on the front side of the connecting plate, and the limiting block is slidably connected to the connecting plate through the sliding channel.

[0010] By adopting this technical solution, it is beneficial for the stable sliding of the limiting block on the connecting plate, and for limiting the movement of the movable sleeve, thereby facilitating the stable use of the device.

[0011] Furthermore, the movable component includes a plug rod, a connecting component, and a sliding wheel. The two plug rods are respectively inserted into the left and right sides of the base plate. The connecting component is fixed to the inner side of the base plate, and the sliding wheel is rotatably connected to the connecting component.

[0012] By adopting this technical solution, it is beneficial to limit the connection components with the insertion rod, thereby facilitating the stable use of the components and improving the effectiveness of the device.

[0013] Furthermore, the base plate has insertion holes on both the left and right sides, and the insertion rod is slidably connected to the base plate through the insertion holes. The top of the base plate has a placement opening, and the connecting component is located in the placement opening.

[0014] By adopting this technical solution, it is beneficial for the insertion rod to connect with the connecting component after passing through the base plate, and it is also beneficial for the component to realize the function of retracting and extending the sliding wheel.

[0015] Furthermore, the connecting assembly includes a fixing frame, a positioning plate, a positioning disk, and a connecting plate. The fixing frame is fixed to the inner top of the base plate, the positioning plate is attached to the top of the fixing frame, the positioning disk is fixed to the top of the positioning plate, a connecting post penetrating the positioning opening is fixed to the bottom of the positioning plate, the bottom of the connecting post is fixed to the connecting plate, and the sliding wheel is rotatably connected to the bottom of the connecting plate.

[0016] By adopting this technical solution, it is beneficial to realize the adjustment of the positioning plate by rotating the positioning plate, thereby limiting the sliding wheel by the position of the positioning plate, which is conducive to the stable use of the component.

[0017] Furthermore, each of the two fixing frames and the two card slots has a connecting port adapted to the insertion hole on the opposite side, and the top of the fixing frame has a card slot that is cross-shaped and opposite to the card slot.

[0018] By adopting this technical solution, the insertion rod can limit the locking plate after passing through the insertion hole and the connection port, thereby achieving the locking effect on the sliding wheel.

[0019] Furthermore, the collecting assembly includes a housing, a receiving column, a displacement plate, a top support spring, and a collecting shell. The housing is fixed to the bottom of the fixed shell, the receiving column is fixed to the inner wall of the right side of the housing, the displacement plate is inserted into the outer side of the receiving column and extends through to the left side of the housing, the top support spring is fixed between the inner right wall of the housing and the displacement plate, the top support spring is wrapped around the outer side of the receiving column, and the collecting shell is fixed to the top of the displacement plate.

[0020] By adopting this technical solution, it is beneficial to initially locate the detection point after the displacement plate contacts the wall. At the same time, the setting of the top support spring facilitates the reset of the displacement plate, thereby improving the stability of the component.

[0021] Furthermore, a receiving plate is fixed to the left side of the displacement plate. The receiving plate has a frustum structure. A connection port is provided on the inner side of the displacement plate. The receiving column is inserted into the displacement plate through the connection port.

[0022] By adopting this technical solution, it is beneficial to achieve stable displacement of the displacement plate, thereby improving the overall stability of the device and enhancing its performance.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] The rebound device for non-destructive testing of concrete compressive strength in this project improves ease of use and stability by retracting and extending the sliding wheel through the setting of movable components. The drilling bit is lowered by rotating the rotating rod, further enhancing the device's stability. The testing mechanism facilitates the testing of concrete strength, and its vertical displacement enables multi-point testing of the concrete, improving testing effectiveness. The collection component facilitates the collection of debris, contributing to the stable use of the device. Overall, the device is convenient, stable, and performs well. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the active component structure of this utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of the connecting component of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the collection component of this utility model.

[0029] In the diagram: 1. Base plate; 2. Movable component; 201. Insert rod; 202. Connecting component; 2021. Fixing frame; 2022. Positioning plate; 2023. Positioning disc; 2024. Connecting plate; 203. Sliding wheel; 3. Connecting plate; 4. Threaded rod; 5. Rotary disc; 6. Movable sleeve; 7. Limiting block; 8. Rotating rod; 9. Rotating disc; 10. Threaded disc; 11. Drill bit; 12. Fixing shell; 13. Cylinder; 14. Power supply battery; 15. Movable column; 16. Speed ​​sensor; 17. Guide sleeve; 18. Impact rod; 19. Fixing disc; 20. Return spring; 21. Pressure sensor; 22. Impact head; 23. Collection component; 2301. Outer shell; 2302. Support column; 2303. Displacement plate; 2304. Top support spring; 2305. Collection shell. Detailed Implementation

[0030] 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.

[0031] Please see Figure 1 This embodiment of a rebound device for non-destructive testing of the compressive strength of engineering concrete includes a base plate 1, two movable components 2 on the top of the base plate 1, a connecting plate 3 fixed on the top of the base plate 1, a threaded rod 4 rotatably connected to the top of the connecting plate 3, a rotating disk 5 fixed on the top of the threaded rod 4, a movable sleeve 6 threadedly connected to the outer side of the threaded rod 4, a limiting block 7 slidably connected to the connecting plate 3 fixed on the back of the movable sleeve 6, and a sliding channel opened on the front of the connecting plate 3, through which the limiting block 7 is slidably connected to the connecting plate 3.

[0032] Understandably, the sliding channel setting facilitates the stable sliding of the limit block 7 and the connecting plate 3, limits the movement of the movable sleeve 6, facilitates the stable lifting and lowering of the movable sleeve 6, and improves the overall stability of the device.

[0033] The inner side of the threaded rod 4 is rotatably connected to a rotating rod 8 extending to the inner side of the base plate 1. A rotating disk 9 is fixed to the top of the rotating rod 8. A threaded disk 10 that is threadedly connected to the inner side of the base plate 1 is fixed to the outer side of the rotating rod 8. A drill bit 11 is fixed to the bottom of the rotating rod 8. A detection mechanism is provided on the front of the movable sleeve 6. A collection component 23 is provided on the detection mechanism.

[0034] It is also understandable that by rotating the rotating rod 8, the drill bit 11 is lowered and rotated under the action of the threaded connection between the base plate 1 and the threaded disc 10, which helps to improve the stability of the overall device and improve the use effect of the device.

[0035] The testing mechanism includes a fixed shell 12, a cylinder 13, a power supply battery 14, a movable column 15, a speed sensor 16, a guide sleeve 17, an impact rod 18, a fixed plate 19, a return spring 20, a pressure sensor 21, and an impact head 22. The fixed shell 12 is fixed to the front of the movable sleeve 6, the right side of the fixed shell 12 is fixed to the cylinder 13, the power supply battery 14 is fixed to the right side of the cylinder 13, the movable shaft of the cylinder 13 passes through the right wall of the fixed shell 12 and is fixed to the movable column 15, the speed sensor 16 is fixed to the outside of the movable column 15, the guide sleeve 17 is fixed to the inside of the fixed shell 12, the impact rod 18 is fixed to the left side of the movable column 15, and the impact rod 18 is slidably connected to the inside of the guide sleeve 17 and passes through to the outside of the fixed shell 12.

[0036] It should be noted that the guide sleeve 17 helps to limit the displacement of the impact rod 18, thereby facilitating the stable horizontal displacement of the impact rod 18, which in turn improves the overall stability of the mechanism and enhances the effectiveness of the device.

[0037] The fixed plate 19 is fixed to the outside of the impact rod 18, the impact rod 18 is slidably connected to the inside of the guide sleeve 17, the return spring 20 is fixed between the inner wall of the left side of the guide sleeve 17 and the fixed plate 19, the pressure sensor 21 is fixed to the left side of the impact rod 18, and the impact head 22 is fixed to the left side of the pressure sensor 21.

[0038] It should also be noted that the installation of pressure sensor 21 and speed sensor 16 facilitates the detection of concrete strength, promotes the stable use of the device, and improves the device's performance.

[0039] Please see Figures 2 to 3 To improve flexibility, the movable component 2 in this embodiment includes a plug rod 201, a connecting component 202, and a sliding wheel 203. The two plug rods 201 are respectively plugged into the left and right sides of the base plate 1. The left and right sides of the base plate 1 are provided with plug holes. The plug rods 201 are slidably connected to the base plate 1 through the plug holes. The top of the base plate 1 is provided with a placement opening, and the connecting component 202 is located in the placement opening.

[0040] It can be seen that the design of the insertion hole facilitates the movement of the insertion rod 201, which in turn facilitates locking the sliding wheel 203 through the insertion rod 201, thus contributing to the stable use of the overall component.

[0041] The connecting assembly 202 includes a fixing frame 2021, a positioning plate 2022, a positioning disk 2023, and a connecting plate 2024. The fixing frame 2021 is fixed to the inner top of the base plate 1, and the positioning plate 2022 is attached to the top of the fixing frame 2021. The two fixing frames 2021 and the two positioning plates 2022 are all provided with connecting ports that are compatible with the insertion holes on opposite sides.

[0042] It can also be seen that the design of the connection port facilitates the locking of the sliding wheel 203 by the insertion rod 201 sequentially passing through the insertion hole and the connection port, which helps to improve the overall stability of the device.

[0043] The top of the fixing frame 2021 has a slotting opening that is cross-shaped and opposite to the slotting plate 2022. The slotting plate 2023 is fixed to the top of the slotting plate 2022. The bottom of the slotting plate 2022 has a connecting post that passes through the slotting opening. The bottom of the connecting post is fixed to the connecting plate 2024. The connecting component 202 is fixed to the inner side of the base plate 1. The sliding wheel 203 is rotatably connected to the connecting component 202. The sliding wheel 203 is rotatably connected to the bottom of the connecting plate 2024.

[0044] In this embodiment, the connection component 202 facilitates the rotation of the locking plate 2022 by rotating the locking plate 2023, thereby enabling the locking plate 2022 to rotate and adjust. This facilitates the locking of the sliding wheel 203 by the contact between the locking plate 2022 and the fixing frame 2021, and vice versa, enabling the sliding wheel 203 to be unlocked and used, which improves the overall flexibility of the device.

[0045] Please see Figure 4 To improve stability, the collection component 23 in this embodiment includes a housing 2301, a receiving column 2302, a displacement plate 2303, a top support spring 2304, and a collection shell 2305. The housing 2301 is fixed to the bottom of the fixed shell 12, the receiving column 2302 is fixed to the inner wall on the right side of the housing 2301, the displacement plate 2303 is inserted into the outer side of the receiving column 2302 and extends through to the left side of the housing 2301, and a receiving plate is fixed to the left side of the displacement plate 2303. The receiving plate has a frustum structure.

[0046] The structure of the receiving plate facilitates the introduction of debris falling onto the receiving plate into the collection shell 2305, thereby improving the collection of debris and enhancing ease of use.

[0047] The inner side of the displacement plate 2303 is provided with a connection port. The receiving column 2302 is inserted into the displacement plate 2303 through the connection port. The top support spring 2304 is fixed between the inner right wall of the outer shell 2301 and the displacement plate 2303. The top support spring 2304 is wrapped around the outer side of the receiving column 2302. The collecting shell 2305 is fixed to the top of the displacement plate 2303.

[0048] In this embodiment, the connection port facilitates the insertion of the support column 2302 and the displacement plate 2303, facilitates the displacement reset of the displacement plate 2303 by the top support spring 2304, and facilitates the stable use of the overall assembly.

[0049] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply provided by the storage battery is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0050] The working principle of the above embodiments is as follows:

[0051] By using the sliding wheel 203, the entire device is moved to the wall to be inspected, causing the displacement plate 2303 to contact the wall. Then, the sliding wheel 203 is locked. After pulling out the insertion rod 201, the locking plate 2023 is rotated, moving the locking plate 2022 to the top of the fixing frame 2021. The locking plate 2022 is then rotated again, retracting the sliding wheel 203. By rotating the rotating disk 9, the drill bit 11 is driven down through the threaded connection between the threaded disk 10 and the base plate 1, thus inspecting the soft ground area. The drilling process further stabilizes the overall device. By rotating the rotating disk 5, the position of the impact head 22 is adjusted under the action of the threaded connection of the movable sleeve 6 and the limiting action of the limiting block 7. By starting the cylinder 13, the impact head 22 is driven to impact the wall. The concrete strength is detected by the setting of the pressure sensor 21 and the speed sensor 16. At the same time, when the concrete strength is poor, the debris at the impact point falls into the collection shell 2305 after passing through the receiving plate, realizing the collection of debris. The overall device is convenient and flexible to use and has good performance.

Claims

1. A rebound device for non-destructive testing of the compressive strength of engineering concrete, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with two movable components (2). The top of the base plate (1) is fixed with a connecting plate (3). The top of the connecting plate (3) is rotatably connected with a threaded rod (4). The top of the threaded rod (4) is fixed with a rotating disk (5). The outer side of the threaded rod (4) is threadedly connected with a movable sleeve (6). The back of the movable sleeve (6) is fixed with a limiting block (7) that is slidably connected to the connecting plate (3). The inner side of the threaded rod (4) is rotatably connected with a rotating rod (8) that extends to the inner side of the base plate (1). The top of the rotating rod (8) is fixed with a rotating disk (9). The outer side of the rotating rod (8) is fixed with a threaded disk (10) that is threadedly connected to the inner side of the base plate (1). The bottom of the rotating rod (8) is fixed with a drill bit (11). The front of the movable sleeve (6) is provided with a detection mechanism. The detection mechanism is provided with a collection component (23). The detection mechanism includes a fixed shell (12), a cylinder (13), a power supply battery (14), a movable column (15), a speed sensor (16), a guide sleeve (17), an impact rod (18), a fixed plate (19), a return spring (20), a pressure sensor (21), and an impact head (22). The fixed shell (12) is fixed to the front of the movable sleeve (6), and the right side of the fixed shell (12) is fixed to the cylinder (13). The power supply battery (14) is fixed to the right side of the cylinder (13). The movable shaft of the cylinder (13) passes through the right wall of the fixed shell (12) and is fixed to the movable column (15). The speed sensor (16) is connected to the movable column (15). The outer side of the guide sleeve (17) is fixed to the inner side of the fixed shell (12), the impact rod (18) is fixed to the left side of the movable column (15), the impact rod (18) is slidably connected to the inner side of the guide sleeve (17) and extends to the outer side of the fixed shell (12), the fixed plate (19) is fixed to the outer side of the impact rod (18), the impact rod (18) is slidably connected to the inner side of the guide sleeve (17), the reset spring (20) is fixed between the inner wall of the left side of the guide sleeve (17) and the fixed plate (19), the pressure sensor (21) is fixed to the left side of the impact rod (18), and the impact head (22) is fixed to the left side of the pressure sensor (21).

2. The rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 1, characterized in that: The front of the connecting plate (3) is provided with a sliding channel, and the limiting block (7) is slidably connected to the connecting plate (3) through the sliding channel.

3. The rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 1, characterized in that: The movable component (2) includes a plug rod (201), a connecting component (202), and a sliding wheel (203). The two plug rods (201) are respectively inserted into the left and right sides of the base plate (1). The connecting component (202) is fixed to the inner side of the base plate (1). The sliding wheel (203) is rotatably connected to the connecting component (202).

4. A rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 3, characterized in that: The base plate (1) has insertion holes on both the left and right sides. The insertion rod (201) is slidably connected to the base plate (1) through the insertion holes. The top of the base plate (1) has a placement opening, and the connecting component (202) is located in the placement opening.

5. A rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 4, characterized in that: The connecting assembly (202) includes a fixing frame (2021), a positioning plate (2022), a positioning disk (2023), and a connecting plate (2024). The fixing frame (2021) is fixed to the inner top of the base plate (1). The positioning plate (2022) is attached to the top of the fixing frame (2021). The positioning disk (2023) is fixed to the top of the positioning plate (2022). A connecting post penetrating the positioning opening is fixed to the bottom of the positioning plate (2022). The bottom of the connecting post is fixed to the connecting plate (2024). The sliding wheel (203) is rotatably connected to the bottom of the connecting plate (2024).

6. A rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 5, characterized in that: Each of the two fixing brackets (2021) and the two card slots (2022) has a connecting port adapted to the insertion hole on its opposite side. The top of the fixing bracket (2021) has a card slot that is cross-shaped and opposite to the card slots (2022).

7. A rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 1, characterized in that: The collecting assembly (23) includes a housing (2301), a receiving column (2302), a displacement plate (2303), a top support spring (2304), and a collecting shell (2305). The housing (2301) is fixed to the bottom of the fixed shell (12). The receiving column (2302) is fixed to the inner wall on the right side of the housing (2301). The displacement plate (2303) is inserted into the outer side of the receiving column (2302) and extends through to the left side of the housing (2301). The top support spring (2304) is fixed between the inner right wall of the housing (2301) and the displacement plate (2303). The top support spring (2304) is wrapped around the outer side of the receiving column (2302). The collecting shell (2305) is fixed to the top of the displacement plate (2303).

8. A rebound device for non-destructive testing of the compressive strength of engineering concrete according to claim 7, characterized in that: A receiving plate is fixed on the left side of the displacement plate (2303). The receiving plate has a frustum structure. A connection port is provided on the inner side of the displacement plate (2303). The receiving column (2302) is inserted into the displacement plate (2303) through the connection port.

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