Concrete resiliometer calibration device

Abstract

The invention discloses a concrete resiliometer calibration device, and relates to the technical field of building detection equipment calibration. The concrete rebound apparatus calibration device comprises a rectangular plate-shaped base, a dovetail groove is formed in the base, an arc-shaped clamping mechanism, a jacking mechanism and a laser calibration mechanism are arranged on the base, the arc-shaped clamping mechanism comprises a U-shaped arc-shaped clamping body, an arc-shaped clamping block and a locking bolt, a buffer layer and an anti-skid layer are arranged on the inner side of the arc-shaped clamping block, and transverse stable fixing of a rebound apparatus body is achieved; the jacking mechanism pushes a jacking plate to slide along a dovetail groove through a jacking bolt to axially jack the rebound apparatus main body, the laser calibration mechanism comprises a second fixing plate, a calibration plate, a pressure sensor, a laser transmitter and a laser sight glass, and the laser transmitter transmits a light beam to the laser sight glass to monitor the position of a striking rod. The rebound value calibration precision can be improved, the operation process is simplified, the rebound instrument equipment is protected, and the on-site mobile calibration requirement is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building detection equipment calibration, and particularly relates to a concrete rebound hammer calibration device. BACKGROUND

[0002] In the field of building engineering, the core calibration target of the concrete rebound hammer is to ensure the accuracy of the rebound value, that is, the rebound value output by the rebound hammer after detecting the concrete surface, which can truly reflect the compressive strength of the concrete, and the accuracy directly determines the engineering quality evaluation result, so it is necessary to regularly correct the key parameters such as rebounding energy and pointer friction through the calibration device to ensure the reliability of the detection data. The existing rebound hammer calibration device mainly adopts mechanical reference and manual visual judgment to judge the accuracy of the rebound value, which is specifically shown as follows: the rebounding end of the rebound hammer is aligned with the standard anvil, the rebounding mechanism is manually triggered, the pointer reading on the dial of the rebound hammer is manually read, and then the reading is compared with the standard rebound value corresponding to the anvil to determine whether it is qualified. The limitations of this method are obvious: on the one hand, manual reading is easily affected by subjective factors, for example, the observation angle deviation will cause parallax error, especially in strong light and vibration environment such as construction site, the error will be further magnified; on the other hand, the root cause of the rebound value deviation cannot be quantified, if the rebound value is low, the staff cannot determine whether it is caused by insufficient rebounding energy, excessive pointer friction or offset contact between the rebounding rod and the anvil, and can only troubleshoot by repeatedly disassembling and adjusting, which is extremely low in efficiency. The special laser assembly solves the pain points of the traditional method, for example, the accurate light beam emitted by the laser emitter can track the offset displacement of the rebounding rod after rebounding, which can quickly locate the root cause of the deviation, reduce the disassembling and adjusting links, and adapt to the high efficiency requirement of on-site mobile calibration, becoming the key direction to solve the existing rebound value calibration pain points. SUMMARY

[0003] The present application aims to at least solve one of the problems in the prior art, and provides a subject that can solve the above problems.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a concrete rebound hammer calibration device, comprising a base, the base is a rectangular plate structure, a dovetail groove is formed in the base, an arc clamping mechanism is arranged on the base, a rebound hammer body is placed on the arc clamping mechanism, and a rebounding rod is arranged at the end of the rebound hammer body. A tightening mechanism is arranged on the left end of the arc clamping mechanism on the base, and a laser calibration mechanism is arranged on one side of the arc clamping mechanism on the base.

[0005] Preferably, the arc clamping mechanism comprises an arc clamping body, the arc clamping body is a U-shaped structure, both ends of the arc clamping body are fixedly connected to the base, and two arc clamping blocks are arranged in the arc clamping body. The inner side of the arc-shaped clamping block is in an arc-shaped structure, and locking bolts are spirally connected on the two sides of the arc-shaped clamping body, the other ends of the locking bolts penetrating into the inner side of the arc-shaped clamping body and being fixedly connected on the arc-shaped clamping block.

[0006] Preferably, the inner side arc surface of the arc-shaped clamping block is fixedly connected with a buffer layer, and the buffer layer is fixedly connected with an anti-skid layer. The rebound instrument body is in contact with the two anti-skid layers.

[0007] Preferably, the tightening mechanism comprises a fixed plate one fixedly connected to the left end of the base, a tightening plate provided on the right side of the base corresponding to the fixed plate one, and a sliding block fixedly connected to the bottom end of the tightening plate. The shape of the sliding block is matched with the dovetail groove, and the sliding block is slidingly connected to the dovetail groove.

[0008] Preferably, a tightening bolt is spirally connected to the fixed plate one, the other end of the tightening bolt penetrating through the fixed plate one and being fixedly connected to the tightening plate, and a groove one is provided on the other side of the tightening plate corresponding to one end of the rebound instrument body. The groove one is in abutment with the rebound instrument body.

[0009] Preferably, the laser calibration mechanism comprises a fixed plate two fixedly connected to the right end of the base, a calibration plate provided on the left end of the base corresponding to the fixed plate two, and a sliding block fixedly connected to the bottom end of the calibration plate. The sliding block is slidingly connected to the dovetail groove.

[0010] Preferably, a pressure sensor is fixedly connected to the side of the calibration plate opposite to the fixed plate two, and a calibration bolt is spirally connected to the fixed plate two. The other end of the calibration bolt penetrates through the fixed plate two and is fixedly connected to the pressure sensor.

[0011] Preferably, a groove two is provided on the calibration plate corresponding to the position of the bullet rod, and the groove two is in abutment with the bullet rod.

[0012] Preferably, a fixed support is fixedly connected to the arc-shaped clamping block, the fixed support is in an L-shaped structure, and a laser emitter is fixedly connected to the side of the fixed support corresponding to the calibration plate. A laser sight is fixedly connected to the calibration plate corresponding to the position of the laser emitter.

[0013] Preferably, one of the arc-shaped clamping blocks is provided with an arc-shaped groove, at least part of the other arc-shaped clamping block can extend into the arc-shaped groove, and the central angle of the arc-shaped clamping block provided with the arc-shaped groove is greater than the central angle of the other arc-shaped clamping block.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. This concrete rebound hammer calibration device achieves both visualization and quantification of rebound value calibration through the coordinated operation of a laser calibration mechanism and a pressure sensor. The precise beam emitted by the laser emitter is directed towards the laser sight glass, which can intuitively monitor whether the axis of the impact rod is offset, thus avoiding misjudgment of rebound value due to the positional deviation of the impact rod.

[0015] 2. This concrete rebound hammer calibration device can drive the arc-shaped clamping block to fix the rebound hammer horizontally by rotating the locking bolt, without complicated disassembly; the tightening mechanism can quickly lock the rebound hammer axially by pushing the tightening plate along the dovetail groove with the tightening bolt, and the slot is adapted to the end of the rebound hammer, without the need for repeated adjustment of alignment.

[0016] 3. This concrete rebound hammer calibration device uses a laser sight to directly reflect the position of the impact rod, and the pressure sensor data is displayed in real time. This eliminates the need for staff to troubleshoot the rebound value deviations one by one, greatly reducing the debugging process. In addition, the scale on the base provides an intuitive reference for the distance the calibration plate moves, further simplifying the operation steps. It is especially suitable for on-site mobile calibration scenarios such as construction sites, effectively shortening the calibration time of a single rebound hammer and improving the overall calibration efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a front view of a concrete rebound hammer calibration device according to the present invention. Figure 2 For the present invention Figure 1 Enlarged view of point A; Figure 3 This is a side view of a concrete rebound hammer calibration device according to the present invention; Figure 4 This is a cross-sectional schematic diagram of a concrete rebound hammer calibration device according to the present invention. Figure 5 This is a schematic diagram of the arc-shaped clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the arc-shaped clamping block of the present invention.

[0018] Reference numerals in the attached diagram: 1. Base; 2. Dovetail groove; 3. Arc-shaped clamping body; 4. Arc-shaped clamping block; 5. Locking bolt; 6. Buffer layer; 7. Anti-slip layer; 8. Rebound hammer body; 9. Impact rod; 10. Fixing plate one; 11. Tightening plate; 12. Slot one; 13. Slider; 14. Tightening bolt; 15. Fixing plate two; 16. Calibration plate; 17. Pressure sensor; 18. Calibration bolt; 19. Slot two; 20. Fixing bracket; 21. Laser emitter; 22. Laser sight glass; 23. Scale. Detailed Implementation

[0019] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0021] In the description of this invention, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0023] Please see Figures 1-6 The present invention provides a technical solution: a concrete rebound hammer calibration device, including a base 1, the base 1 is a rectangular plate structure, a dovetail groove 2 is provided on the base 1, an arc-shaped clamping mechanism is provided on the base 1, a rebound hammer body 8 is on the arc-shaped clamping mechanism of the base 1, and a spring-loaded rod 9 is at the end of the rebound hammer body 8. A clamping mechanism is provided on the left end of the base 1 corresponding to the arc-shaped clamping mechanism, and a laser calibration mechanism is provided on the corresponding side of the base 1. The base 1 serves as the overall support for the device, and its rectangular plate structure ensures placement stability. The dovetail groove 2 provides a guide rail for the sliding parts of the subsequent clamping mechanism and laser calibration mechanism, preventing the parts from moving or shifting. In use, the rebound hammer body 8 is first placed on the arc-shaped clamping mechanism to achieve initial fixation of the rebound hammer body 8 and prevent it from lateral shaking. Then, the clamping mechanism at the left end of the base 1 applies clamping force from the end of the rebound hammer body 8 to limit its axial displacement and ensure positional stability. The laser calibration mechanism on one side of the base 1 is used to detect the calibration parameters of the impact rod 9 at the end of the rebound hammer body 8, providing stable mechanical support and functional partitions for accurate calibration of the rebound hammer, ensuring that all components work together during the calibration process, and avoiding calibration errors caused by structural instability. Furthermore, the arc-shaped clamping mechanism includes an arc-shaped clamping body 3, which has a U-shaped structure. Both ends of the arc-shaped clamping body 3 are fixedly connected to the base 1, and there are two arc-shaped clamping blocks 4 inside the arc-shaped clamping body 3. The inner side of the arc-shaped clamping block 4 has an arc-shaped structure, and locking bolts 5 are spirally connected on both sides of the arc-shaped clamping body 3. The other end of the locking bolt 5 passes through the inner side of the arc-shaped clamping body 3 and is fixedly connected to the arc-shaped clamping block 4. A buffer layer 6 is fixedly connected to the inner arc-shaped surface of the arc-shaped clamping block 4, and an anti-slip layer 7 is fixedly connected to the buffer layer 6. The rebound hammer body 8 contacts the two anti-slip layers 7; The arc-shaped clamping body 3 is fixedly connected to the base 1 at both ends to form a U-shaped fixed frame, providing installation and movement space for the arc-shaped clamping block 4. When the rebound hammer body 8 is placed inside the arc-shaped clamping body 3, the locking bolts 5 on both sides of the arc-shaped clamping body 3 are rotated. Because the locking bolts 5 are spirally connected to the arc-shaped clamping body 3, the rotational force is converted into axial thrust, which pushes the arc-shaped clamping block 4 connected to the inner side of the locking bolts 5 to move towards the rebound hammer body 8. The arc-shaped structure on the inner side of the arc-shaped clamping block 4 is adapted to the shape of the rebounder body 8 to ensure a tight fit; the buffer layer 6 on the inner side of the arc-shaped clamping block 4 can buffer the clamping force and avoid rigid contact damage to the outer shell of the rebounder body 8. The anti-slip layer 7 on the buffer layer 6 increases the friction with the rebounder body 8, preventing the rebounder body 8 from sliding after clamping. The symmetrical clamping of the arc-shaped clamping blocks 4 on both sides achieves stable fixation of the lateral position of the rebounder body 8, laying the foundation for subsequent clamping and calibration. Furthermore, the clamping mechanism includes a fixed plate 10, which is fixedly connected to the left end of the base 1. A clamping plate 11 is located on the right side of the base 1 corresponding to the fixed plate 10, and a slider 13 is fixedly connected to the bottom end of the clamping plate 11. The shape of slider 13 matches the dovetail groove 2, and slider 13 is slidably connected to dovetail groove 2; A tightening bolt 14 is spirally connected to the fixing plate 10. The other end of the tightening bolt 14 passes through the fixing plate 10 and is fixedly connected to the tightening plate 11. A slot 12 is opened on the other side of the tightening plate 11 corresponding to one end of the rebounder body 8. The slot 12 is in contact with the main body 8 of the rebound spring; The fixed plate 10 is fixedly connected to the left end of the base 1, becoming the fixed support end of the clamping mechanism; the slider 13 at the bottom end of the clamping plate 11 matches the shape of the dovetail groove 2 on the base 1, and can slide stably along the dovetail groove 2, ensuring that the clamping plate 11 can only move axially and avoid lateral displacement; when it is necessary to clamp the rebounder body 8 axially, the clamping bolt 14 on the fixed plate 10 is rotated, and the clamping bolt 14 is screwed with the fixed plate 10, and the rotational motion is converted into axial linear motion, pushing the clamping plate 11 fixedly connected at the other end to slide along the dovetail groove 2 towards the rebounder body 8; The slot 12 on the top plate 11 is adapted to the shape of one end of the rebound hammer body 8. When in contact, it can increase the contact area, avoid excessive local pressure and damage to the rebound hammer body 8. At the same time, it ensures that the top clamping force is accurately applied to the axial direction of the rebound hammer body 8, restricts its axial displacement, and prevents the rebound hammer body 8 from changing the position of the spring rod 9 due to axial loosening during the calibration process, which would affect the calibration accuracy and achieve stable locking of the axial position of the rebound hammer body 8. Furthermore, the laser calibration mechanism includes a second fixing plate 15, which is fixedly connected to the right end of the base 1. A calibration plate 16 is located on the left end of the base 1 corresponding to the second fixing plate 15, and a slider 13 is fixedly connected to the bottom end of the calibration plate 16. Slider 13 is slidably connected to dovetail groove 2; A pressure sensor 17 is fixedly connected to the side of the calibration plate 16 facing the fixing plate 15, and a calibration bolt 18 is screwed onto the fixing plate 15. The other end of the calibration bolt 18 passes through the fixing plate 15 and is fixedly connected to the pressure sensor 17. The calibration plate 16 has a slot 19 at the position corresponding to the impact rod 9, and the slot 19 abuts against the impact rod 9; A fixed bracket 20 is fixedly connected to the arc-shaped clamp 4. The fixed bracket 20 has an L-shaped structure. A laser emitter 21 is fixedly connected to one side of the fixed bracket 20 corresponding to the calibration plate 16. A laser sight 22 is fixedly connected to the calibration plate 16 at the position corresponding to the laser emitter 21; Fixed plate 15 is fixedly connected to the right end of base 1, providing fixed support for laser calibration mechanism; slider 13 at the bottom of calibration plate 16 slides along dovetail groove 2 of base 1, ensuring that it can only move axially; before calibration, rotate calibration bolt 18 on fixed plate 15 to push calibration plate 16 towards impact rod 9 until slot 19 on calibration plate 16 abuts against impact rod 9. At this time, calibration plate 16 is connected to calibration bolt 18 through pressure sensor 17. DATA-52 series diffused silicon pressure sensor 17 is used based on piezoresistive effect to monitor the pressure value of impact rod 9 acting on calibration plate 16 in real time and accurately. Meanwhile, the fixed bracket 20 on the arc-shaped clamp 4, due to its L-shaped structure, can fix the laser emitter 21 at the position of the corresponding calibration plate 16. The laser emitter 21 is a semiconductor laser emitter, and the laser beam emitted by the laser emitter 21 is precisely pointed to the laser sight mirror 22 on the calibration plate 16. The laser sight mirror 22 is made of optical glass, which is compatible with the wavelength of the laser emitter 21 and has high light transmittance and clear imaging effect. If the axis of the striking rod 9 is offset, the position of the laser spot on the laser sight mirror 22 will change. The operator can judge whether the position of the striking rod 9 is accurate by the spot offset. Combined with the force value data of the pressure sensor 17, the calibration parameters of the striking rod 9 can be accurately detected to ensure the reliability of the calibration results. Furthermore, the base 1 has a scale 23 corresponding to the laser calibration mechanism; The scale 23 on the base 1 corresponding to the laser calibration mechanism provides an intuitive measurement benchmark for the movement distance of the calibration plate 16 in the laser calibration mechanism, provides clear quantitative reference for staff, and improves the convenience and accuracy of calibration operations.

[0024] One of the arc-shaped clamping blocks 4 is provided with an arc-shaped groove, and at least a part of the other arc-shaped clamping block 4 can extend into the arc-shaped groove. The central angle of the arc-shaped clamping block 4 with the arc-shaped groove is larger than the central angle of the other arc-shaped clamping block 4. Therefore, the two arc-shaped clamping blocks 4 can clamp the rebound instrument body 8 with a smaller diameter, thereby expanding the scope of application.

[0025] Working principle: The arc-shaped clamping body 3 is fixedly connected to the base 1 at both ends to form a U-shaped fixed frame, providing installation and movement space for the arc-shaped clamping block 4; when the rebound hammer body 8 is placed inside the arc-shaped clamping body 3, the locking bolts 5 on both sides of the arc-shaped clamping body 3 are rotated. Since the locking bolts 5 are spirally connected to the arc-shaped clamping body 3, the rotational force is converted into axial thrust, which pushes the arc-shaped clamping block 4 connected to the inner side of the locking bolts 5 to move towards the rebound hammer body 8; The arc-shaped structure on the inner side of the arc-shaped clamping block 4 is adapted to the shape of the rebound hammer body 8 to ensure a tight fit; the buffer layer 6 on the inner side of the arc-shaped clamping block 4 can buffer the clamping force and avoid rigid contact damage to the outer shell of the rebound hammer body 8; the anti-slip layer 7 on the buffer layer 6 increases the friction with the rebound hammer body 8 and prevents the rebound hammer body 8 from sliding after clamping; through the symmetrical clamping of the arc-shaped clamping blocks 4 on both sides, the lateral position of the rebound hammer body 8 is stably fixed, laying the foundation for subsequent tightening and calibration; The fixed plate 10 is fixedly connected to the left end of the base 1, becoming the fixed support end of the clamping mechanism; the slider 13 at the bottom end of the clamping plate 11 matches the shape of the dovetail groove 2 on the base 1, and can slide stably along the dovetail groove 2, ensuring that the clamping plate 11 can only move axially and avoid lateral displacement; when it is necessary to clamp the rebounder body 8 axially, the clamping bolt 14 on the fixed plate 10 is rotated, and the clamping bolt 14 is screwed with the fixed plate 10, and the rotational motion is converted into axial linear motion, pushing the clamping plate 11 fixedly connected at the other end to slide along the dovetail groove 2 towards the rebounder body 8; The slot 12 on the top plate 11 is adapted to the shape of one end of the rebound hammer body 8. When in contact, it can increase the contact area, avoid excessive local pressure and damage to the rebound hammer body 8. At the same time, it ensures that the top clamping force is accurately applied to the axial direction of the rebound hammer body 8, restricts its axial displacement, and prevents the rebound hammer body 8 from changing the position of the spring rod 9 due to axial loosening during the calibration process, which would affect the calibration accuracy and achieve stable locking of the axial position of the rebound hammer body 8. Fixed plate 15 is fixedly connected to the right end of base 1, providing fixed support for laser calibration mechanism; slider 13 at the bottom of calibration plate 16 slides along dovetail groove 2 of base 1, ensuring that it can only move axially; before calibration, rotate calibration bolt 18 on fixed plate 15 to push calibration plate 16 towards impact rod 9 until slot 19 on calibration plate 16 abuts against impact rod 9. At this time, calibration plate 16 is connected to calibration bolt 18 through pressure sensor 17. DATA-52 series diffused silicon pressure sensor 17 is used based on piezoresistive effect to monitor the pressure value of impact rod 9 acting on calibration plate 16 in real time and accurately. Meanwhile, the fixed bracket 20 on the arc-shaped clamp 4, due to its L-shaped structure, can fix the laser emitter 21 at the position of the corresponding calibration plate 16. The laser emitter 21 is a semiconductor laser emitter, and the laser beam emitted by the laser emitter 21 is precisely pointed to the laser sight mirror 22 on the calibration plate 16. The laser sight mirror 22 is made of optical glass material, which is compatible with the wavelength of the laser emitter 21 and has high light transmittance and clear imaging effect. If the axis of the striking rod 9 is offset, the position of the laser spot on the laser sight mirror 22 will change. The operator can judge whether the position of the striking rod 9 is accurate by the spot offset. Combined with the force value data of the pressure sensor 17, the calibration parameters of the striking rod 9 can be accurately detected to ensure the reliability of the calibration results.

[0026] Structural Description: Fixed plate 15: Fixedly connected to the right end of base 1, it is a fixed support component of the laser calibration mechanism and is used to install calibration bolt 18. The advantage of this setting is that it can provide a stable mounting base for calibration bolt 18, ensuring that calibration bolt 18 will not shift during rotation and adjustment, so that calibration bolt 18 can stably push calibration plate 16 to move, ensuring accurate alignment between calibration plate 16 and spring rod 9, and providing stable conditions for laser calibration and pressure acquisition. Calibration plate 16: It is set on the base 1 at the left end of the fixed plate 15, with its bottom end fixedly connected to the slider 13 and the pressure sensor 17 fixedly connected to one side. A slot 19 is provided at the position corresponding to the impact rod 9. The advantage of this setting is that the slider 13 can slide axially through the cooperation of the dovetail groove 2, which is convenient for alignment with the impact rod 9. The slot 19 can ensure that the impact rod 9 and the calibration plate 16 make precise contact, so that the impact force is stably transmitted to the pressure sensor 17. At the same time, it provides an installation position for the laser sight 22, which works with the laser emitter to realize the position monitoring of the impact rod. Pressure sensor 17: A DATA-52 series diffused silicon pressure sensor is fixedly connected to the side of the calibration plate 16 and the fixing plate 15 facing each other, with one end fixedly connected to the calibration bolt 18. The advantage of this setting is that it can collect the impact pressure of the impact rod 9 on the calibration plate 16 in real time, convert the pressure signal into readable data, provide a quantitative basis for judging whether the impact energy of the rebound hammer is qualified, avoid the error of traditional manual estimation, and improve the accuracy of rebound value calibration. Calibration bolt 18: It is screwed onto the second fixing plate 15, and the other end passes through the second fixing plate 15 and is fixedly connected to the pressure sensor 17. The advantage of this setting is that by rotating the calibration bolt 18, the calibration plate 16 can be pushed to slide along the dovetail groove 2, so as to achieve precise alignment between the calibration plate 16 and the impact rod 9. At the same time, the screw structure facilitates fine adjustment of the position of the calibration plate 16, ensuring that the second slot 19 and the impact rod 9 are completely in contact, providing a precise contact basis for pressure acquisition and laser monitoring, and reducing calibration errors caused by alignment deviation. Slot 2 19: It is made at the position of the calibration plate 16 corresponding to the impact rod 9, and abuts against the impact rod 9; the advantage of this setting is that it matches the shape of the impact rod 9, which can ensure that the impact rod 9 makes precise contact with the calibration plate 16, avoid the impact rod 9 from deviating during impact, and allow the impact force to be completely transmitted to the pressure sensor 17, ensuring the accuracy of the pressure acquisition data. At the same time, it can prevent the impact rod 9 from being scratched during contact, protecting the integrity of the impact rod 9. Fixed bracket 20: It has an L-shaped structure and is fixedly connected to the arc-shaped clamp 4 for mounting the laser emitter 21. The advantage of this setting is that the L-shaped structure can fix the laser emitter 21 in the corresponding position of the calibration plate 16, ensuring the installation height and angle of the laser emitter 21 are accurate, so that the beam emitted by the laser emitter 21 can accurately point to the laser sight 22 on the calibration plate 16, providing an accurate laser reference for the position monitoring of the impact rod. At the same time, the fixed bracket 20 and the arc-shaped clamp 4 are fixed synchronously to ensure the stability of the laser emitter position. Laser emitter 21: A semiconductor laser emitter is fixedly connected to one side of the fixed bracket 20 corresponding to the calibration plate 16, and is used to emit a laser beam to the laser sight mirror 22. The advantage of this setting is that it can emit a highly directional laser beam as a reference for monitoring the position of the impact rod 9. If the axis of the impact rod 9 is offset, the position of the laser spot on the laser sight mirror 22 will change accordingly. The operator can intuitively judge whether the position of the impact rod is accurate by the spot offset, providing a basis for quickly adjusting the position of the rebound device and reducing calibration and debugging time. Laser sight glass 22: Made of optical glass, it is fixedly connected to the position of the calibration plate 16 corresponding to the laser emitter 21 and is used to receive the laser beam emitted by the laser emitter 21. The advantage of this setting is that it has high light transmittance and clear imaging effect, which can clearly present the light spot formed by the laser beam, making it easy for the staff to observe the position of the light spot and judge whether the trigger rod 9 has deviated. At the same time, the laser sight glass 22 is fixed synchronously with the calibration plate 16 to ensure that the laser monitoring reference is consistent with the position of the calibration plate, thereby improving the accuracy of position monitoring.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A concrete rebound hammer calibration device, comprising a base (1), characterized in that: The base (1) is a rectangular plate structure. A dovetail groove (2) is provided on the base (1). An arc-shaped clamping mechanism is provided on the base (1). The main body of the rebound device (8) is placed on the arc-shaped clamping mechanism. A spring-loaded rod (9) is provided at the end of the main body of the rebound device (8). A clamping mechanism is provided on the left end of the base (1) corresponding to the arc-shaped clamping mechanism, and a laser calibration mechanism is provided on one side of the base (1) corresponding to the arc-shaped clamping mechanism.

2. The concrete rebound hammer calibration device according to claim 1, characterized in that: The arc-shaped clamping mechanism includes an arc-shaped clamping body (3), which has a U-shaped structure. Both ends of the arc-shaped clamping body (3) are fixedly connected to the base (1), and two arc-shaped clamping blocks (4) are provided inside the arc-shaped clamping body (3). The inner side of the arc-shaped clamp (4) is an arc-shaped structure. The two sides of the arc-shaped clamping body (3) are spirally connected with locking bolts (5). The other end of the locking bolts (5) passes through the inner side of the arc-shaped clamping body (3) and is fixedly connected to the arc-shaped clamp (4).

3. The concrete rebound hammer calibration device according to claim 2, characterized in that: The inner arc-shaped surface of the arc-shaped clamp (4) is fixedly connected to a buffer layer (6), and an anti-slip layer (7) is fixedly connected to the buffer layer (6). The main body (8) of the rebounder is in contact with the two anti-slip layers (7).

4. The concrete rebound hammer calibration device according to claim 3, characterized in that: The clamping mechanism includes a fixing plate (10), which is fixedly connected to the left end of the base (1). A clamping plate (11) is provided on the base (1) on the right side corresponding to the fixing plate (10), and a slider (13) is fixedly connected to the bottom end of the clamping plate (11). The shape of the slider (13) matches the dovetail groove (2), and the slider (13) is slidably connected to the dovetail groove (2).

5. A concrete rebound hammer calibration device according to claim 4, characterized in that: A tightening bolt (14) is spirally connected to the fixing plate (10). The other end of the tightening bolt (14) passes through the fixing plate (10) and is fixedly connected to the tightening plate (11). A slot (12) is provided on the other side of the tightening plate (11) corresponding to one end of the rebounder body (8). The slot 1 (12) is in contact with the main body (8) of the rebound hammer.

6. The concrete rebound hammer calibration device according to claim 5, characterized in that: The laser calibration mechanism includes a second fixed plate (15), which is fixedly connected to the right end of the base (1). A calibration plate (16) is provided on the base (1) corresponding to the left end of the second fixed plate (15), and a slider (13) is fixedly connected to the bottom end of the calibration plate (16). The slider (13) is slidably connected to the dovetail groove (2).

7. A concrete rebound hammer calibration device according to claim 6, characterized in that: A pressure sensor (17) is fixedly connected to the side of the calibration plate (16) facing the fixed plate (15), and a calibration bolt (18) is screwed onto the fixed plate (15). The other end of the calibration bolt (18) passes through the fixing plate 2 (15) and is fixedly connected to the pressure sensor (17).

8. A concrete rebound hammer calibration device according to claim 7, characterized in that: The calibration plate (16) has a slot (19) at the position corresponding to the impact rod (9), and the slot (19) abuts against the impact rod (9).

9. A concrete rebound hammer calibration device according to claim 1, characterized in that: A fixed bracket (20) is fixedly connected to the arc-shaped clamp (4). The fixed bracket (20) has an L-shaped structure. A laser emitter (21) is fixedly connected to one side of the fixed bracket (20) corresponding to the calibration plate (16). A laser sight (22) is fixedly connected to the calibration plate (16) corresponding to the position of the laser emitter (21).

10. A concrete rebound hammer calibration device according to claim 2, characterized in that: One of the arc-shaped clamps (4) is provided with an arc-shaped groove, and at least a portion of the other arc-shaped clamp (4) can extend into the arc-shaped groove, and the central angle of the arc-shaped clamp (4) with the arc-shaped groove is greater than the central angle of the other arc-shaped clamp (4).

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