A rebound testing device applied to strength detection of concrete members

Abstract

The application relates to a rebound detection equipment applied to strength detection of a concrete component and belonging to the technical field of strength detection of concrete components, which comprises a rebound detection device, the rebound detection device is composed of a shell, a spring telescopic rod and a rebounding rod, a protection structure for telescopic protection is arranged outside the rebounding rod, an anti-inclination detection mechanism and a scraping structure which are used for detecting and cleaning the outside of the rebounding rod are arranged inside the protection structure and extend to the outside of the protection structure, a shake-off structure matched with the protection structure is arranged outside the protection structure, the protection structure comprises a protection assembly arranged outside the shell, an abutting piece and a conical cover, the abutting piece comprises a connecting plate fixedly connected to the top of the conical cover and a mounting cylinder fixedly connected to the outside of the shell. The application realizes automatic protection, anti-inclination detection and automatic cyclic cleaning, improves detection precision and equipment stability, prolongs service life and reduces maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete member strength detection, in particular to a rebound detection equipment applied to concrete member strength detection. BACKGROUND

[0002] The rebound test of concrete strength is used to evaluate the compressive strength of concrete. In the construction process, the rebound test is an important quality control means, which can ensure that the strength of concrete meets the design requirements and guarantees the safety and durability of buildings.

[0003] In the construction engineering, the strength detection of concrete members is an important link to ensure the engineering quality. The rebound tester is a commonly used non-destructive testing equipment, which calculates the strength of concrete by measuring the hardness of its surface. In multiple consecutive tests, the impact rod is prone to bending or tilting. Most of the existing equipment lack effective tilt detection mechanism, which cannot timely find these problems, thereby increasing the measurement error and affecting the accuracy of concrete member strength detection. When the impact rod impacts the concrete wall, debris and dust impurities are easily attached to its surface. These impurities not only interfere with the normal impact and rebound process of the impact rod, leading to inaccurate measurement data, but also may enter the rebound tester, damaging the parts and affecting the operation of the equipment.

[0004] Therefore, it is urgent to improve the rebound detection equipment applied to concrete member strength detection to solve the above problems. SUMMARY

[0005] In view of the shortcomings of the prior art, the present application provides a rebound detection equipment applied to concrete member strength detection. The present application realizes automatic protection, anti-tilt detection and automatic cyclic cleaning, improves the detection accuracy and equipment stability, prolongs the service life and reduces the maintenance cost.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a rebound detection equipment applied to concrete member strength detection, comprising a rebound detection device, the rebound detection device is composed of a shell, a spring telescopic rod and an impact rod, the impact rod is provided with a protection structure outside for telescopic protection, the inside of the protection structure is provided with an anti-tilt detection mechanism and a scraping structure extending to the outside thereof for detecting and cleaning the outside of the impact rod, and the outside of the protection structure is provided with a shake-off structure matched therewith;

[0007] The protection structure comprises a protection assembly, an abutting piece and a conical cover arranged outside the shell, the abutting piece comprises a connecting plate fixedly connected to the top of the conical cover and a mounting cylinder fixedly connected to the outside of the shell, a displacement rod penetrating through the mounting cylinder is fixedly connected to the outside of the connecting plate, a moving plate is fixedly connected to the outside of the displacement rod, and an abutting spring is fixedly connected between the moving plate and the mounting cylinder.

[0008] The anti-tilting detection mechanism comprises a fixed shaft fixedly connected to the inside of the conical cover, one end of the fixed shaft is fixedly connected with a supporting ring, the inner wall of the supporting ring is fixedly connected with a transmission spring, the end of the transmission spring away from the supporting ring is fixedly connected with an arc-shaped plate, the inside of the arc-shaped plate is fixedly installed with a horizontal sensor, the arc-shaped plate and the horizontal sensor are in abutment with the outside of the knock rod, and the outside of the arc-shaped plate is provided with a driving structure extending to the outside of the conical cover.

[0009] The scraping structure comprises a transmission structure and a cleaning structure arranged outside the protection structure and extending to the inside thereof, the cleaning structure comprises two arc-shaped scraper rings arranged outside the knock rod, and the bottoms of the two arc-shaped scraper rings are provided with limiting assemblies.

[0010] Preferably, the protection assembly comprises a first sleeve fixedly connected to the outside of the shell, the outside of the first sleeve is slidingly connected with a second sleeve, the outside of the second sleeve is slidingly connected with a third sleeve, the conical cover is fixedly connected to the end of the third sleeve away from the second sleeve, the first sleeve, the second sleeve, the third sleeve and the conical cover are sleeved outside the knock rod, the number of the abutment pieces is two groups, and the two groups are symmetrically distributed on the outside of the conical cover, the displacement rod and the moving plate are slidingly connected to the inside of the mounting cylinder, and the abutment spring is connected around the outside of the displacement rod.

[0011] Preferably, the driving structure comprises a moving rod fixedly connected to the top of the arc-shaped plate and extending to the outside of the conical cover and a connecting handle slidingly connected to the inside of the connecting plate, the top of the moving rod is fixedly connected with a sliding seat, the inside of the sliding seat is provided with a wave groove, one end of the connecting handle is rotatably connected with a moving pin shaft extending to the inside of the wave groove, the moving pin shaft is slidingly connected to the inside of the wave groove, and the connecting handle is reciprocatingly slidingly connected to the inside of the connecting plate and extends to the outside thereof through the moving pin shaft.

[0012] Preferably, the transmission structure comprises a transmission rod fixedly connected to the other end of the connecting handle and connecting shafts fixedly connected to the tops of the two arc-shaped scraper rings respectively, the bottom end of the transmission rod is fixedly connected with a transmission plate, the inside of the transmission plate is provided with a sliding groove, the top end of the connecting shaft is rotatably connected with a roller extending to the inside of the sliding groove, the roller is slidingly connected to the inside of the sliding groove, and the two groups of sliding grooves are oppositely arranged, and the top end of the transmission rod is slidingly connected to the outside of the top displacement rod.

[0013] Preferably, the two arc-shaped scraping rings are sleeved on the outside of the elastic striking rod, and the two arc-shaped scraping rings are slidably connected to the inside of a third sleeve through the transmission plate, the inside of the third sleeve is provided with a transmission opening matched with the connecting shaft, and the inside of the transmission opening is fixedly installed with a sealing protection pad matched with the connecting shaft.

[0014] Preferably, the limiting assembly comprises a guide rod fixedly connected to the inside of the third sleeve and two connecting blocks fixedly connected to the bottoms of the two arc-shaped scraping rings respectively, the two connecting blocks are slidably connected to the outside of the guide rod, and the two connecting blocks are fixedly connected with a tension spring.

[0015] Preferably, the shaking-off structure comprises a mounting plate fixedly connected to the outside of the conical cover, an elastic tongue and a discharging opening formed in the inside of the conical cover, the outside of the elastic tongue is provided with a knocking structure linked with the abutting piece, the knocking structure comprises a rotating shaft rotatably connected to the inside of the mounting plate and a toothed rod fixedly connected to the top of the displacement rod at the bottom, one end of the rotating shaft is fixedly connected with a connecting roller, the outside of the connecting roller is fixedly connected with a beating plate abutting against the elastic tongue, the other end of the rotating shaft is fixedly connected with a gear meshing with the toothed rod, and the beating plate is rotatably connected to the outside of the elastic tongue through the toothed rod and the displacement rod.

[0016] Preferably, the outside of the shell is provided with a blowing structure for linkage and cooperation with the scraping structure and the shaking-off structure, the blowing structure comprises an annular nozzle fixedly connected to the inside of the conical cover and a piston cylinder fixedly connected to the top of the shell, the annular nozzle is connected to the outside of the elastic striking rod in a surrounding manner, the inside of the piston cylinder is slidably connected with a plug plate, the outside of the plug plate is fixedly connected with a plug rod extending to the outside of the piston cylinder, one end of the plug rod away from the plug plate is fixedly connected with an abutting plate, the abutting plate and the piston cylinder are fixedly connected with a return spring, and the abutting plate abuts against one end of the displacement rod at the top.

[0017] Preferably, a plurality of spray holes are formed in the inside of the annular nozzle, a gas conveying pipe is fixedly and communicatively connected between the piston cylinder and the annular nozzle, and an air inlet pipe is fixedly and communicatively connected to the outside of the piston cylinder.

[0018] Preferably, the spring telescopic rod is fixedly installed in the inside of the shell, the elastic striking rod is slidably connected to the inside of the spring telescopic rod and extends to the inside of the shell, the top of the shell is fixedly installed with a digital display screen and a control keyboard through a digital display box, and the inside of the digital display box is further fixedly installed with a battery pack, a displacement sensor and a wireless communication module.

[0019] Compared with the prior art, the rebound detection equipment applied to the strength detection of a concrete member has the following beneficial effects:

[0020] 1. This invention, by setting an arc-shaped plate and a horizontal sensor to elastically abut against the outside of the impact rod, enables the horizontal sensor to detect this change in real time and transmit the signal to the control system of the equipment. Operators can understand the status of the impact rod in a timely manner, avoid the increase of measurement error due to the tilt of the impact rod, and ensure the accuracy of the detection results.

[0021] 2. In this invention, when the arc-shaped plate moves due to the tilt of the spring rod or the change in the adhesion of impurities, it will drive the moving rod and the slide to move. Through the cooperation of the wave groove and the moving pin, the connecting handle slides back and forth, thereby providing power for the subsequent scraping structure and realizing the linkage of detection and cleaning functions.

[0022] 3. This invention, by setting two arc-shaped scraping rings, uses a driving structure to convert the tilting of the impact rod or the change in impurity adhesion into the movement of the arc-shaped scraping rings, thereby scraping and cleaning the impurities on the outside of the impact rod. At the same time, it also limits the movement trajectory of the impact rod and can quickly reset after the scraping action is completed, ensuring the accuracy of the next cleaning action and avoiding the impact of impurities adhering to the surface of the impact rod on the detection accuracy.

[0023] 4. In this invention, when the bottom displacement rod moves, the rotating shaft rotates under the meshing transmission of the rack and pinion, which in turn causes the striking plate to rotate and continuously strike the elastic tongue, causing the elastic tongue to vibrate. This can shake off the impurities that remain after being scraped and blown around the cone-shaped cover and the striking rod, and discharge them to the outside of the equipment through the discharge port, effectively improving the cleanliness of the equipment and further improving the stability and service life of the equipment.

[0024] 5. In this invention, the plug plate inside the piston cylinder moves under the push of the displacement rod, compressing the gas inside the piston cylinder. The gas is then transported to the annular nozzle through the gas delivery pipe and ejected from the nozzle hole to blow air and clean the outside of the impact rod, further removing fine impurities and dust from the surface of the impact rod. This works in synergy with the scraping structure to clean the impact rod more thoroughly, reduce the interference of impurities on the test results, and prevent impurities from entering the internal structure of the rebound hammer, thereby improving cleaning efficiency.

[0025] 6. In this invention, during the impact rod telescopic detection process, the displacement rod enables the coordinated operation of the scraping structure, the shaking structure, and the air blowing structure. This effectively removes concrete debris and other impurities from the surface of the impact rod and the connection points of the equipment, avoiding the influence of impurities on the movement of the impact rod. This ensures that the impact rod can accurately impact the concrete wall, thereby improving the accuracy of the test data and providing a reliable basis for the assessment of the strength of concrete components. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a rebound testing device for strength testing of concrete components according to the present invention;

[0027] Figure 2 Figure 1 is a partial structural sectional view of a rebound testing device for strength testing of concrete members according to the present application;

[0028] Figure 3 Figure 2 is a structural sectional view of a protective structure, a scraping structure, a blowing structure, a jarring structure, and an anti-tilting detection mechanism of a rebound testing device for strength testing of concrete members according to the present application;

[0029] Figure 4 Figure 3 is a structural schematic view of a protective structure and a blowing structure of a rebound testing device for strength testing of concrete members according to the present application;

[0030] Figure 5 Figure 4 is a structural schematic view of an anti-tilting detection mechanism and a scraping structure of a rebound testing device for strength testing of concrete members according to the present application;

[0031] Figure 6 Figure 5 is a structural schematic view of a scraping structure of a rebound testing device for strength testing of concrete members according to the present application;

[0032] Figure 7 Figure 6 is a partial structural schematic view of a scraping structure of a rebound testing device for strength testing of concrete members according to the present application;

[0033] Figure 8 Figure 7 is a structural schematic view of a jarring structure and a conical cover of a rebound testing device for strength testing of concrete members according to the present application;

[0034] Figure 9 Figure 8 is a structural schematic view of a jarring structure of a rebound testing device for strength testing of concrete members according to the present application.

[0035] As shown in the figure: 1, rebound detection device; 11, shell; 12, spring telescopic rod; 13, spring rod; 14, digital display screen; 15, control keyboard; 2, protection structure; 21, first sleeve; 22, second sleeve; 23, third sleeve; 24, conical cover; 25, connecting plate; 26, mounting cylinder; 27, displacement rod; 28, moving plate; 29, abutting spring; 3, scraping structure; 31, transmission rod; 32, transmission plate; 33, arc scraping ring; 34, connecting shaft; 35, roller; 36, sliding groove; 37, connecting block; 38, guide rod; 39, tension spring; 4, blowing structure; 41, annular nozzle; 42, injection hole; 43, piston cylinder; 44, plug plate; 45, plug rod; 46, abutting plate; 47, reset spring; 48, air inlet pipe; 49, gas conveying pipe; 5, shake-off structure; 51, mounting plate; 52, rotating shaft; 53, elastic tongue; 54, discharge port; 55, connecting roller; 56, beating plate; 57, gear; 58, toothed rod; 6, anti-inclination detection mechanism; 61, fixed shaft; 62, support ring; 63, transmission spring; 64, arc plate; 65, horizontal sensor; 66, moving rod; 67, sliding seat; 68, wave groove; 69, connecting handle; 610, moving pin. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] Please refer to Figures 1 to 9 The rebound detection device for strength detection of concrete members in the embodiment comprises a rebound detection device 1, which is composed of a shell 11, a spring telescopic rod 12 and a spring rod 13. The spring rod 13 is externally provided with a protection structure 2 for telescopic protection. The protection structure 2 is internally provided with an anti-inclination detection mechanism 6 and a scraping structure 3, which extend to the outside of the protection structure 2 for detection and cleaning of the outside of the spring rod 13. The protection structure 2 is externally provided with a shake-off structure 5 for cooperation.

[0038] The spring telescopic rod 12 is fixedly installed in the inside of the shell 11, and the spring rod 13 is slidingly connected to the inside of the spring telescopic rod 12 and extends to the inside of the shell 11. The top of the shell 11 is fixedly installed with a digital display screen 14 and a control keyboard 15 through a digital display box. The inside of the digital display box is further fixedly installed with a battery pack, a displacement sensor and a wireless communication module.

[0039] It should be noted that the digital display screen 14 can display the detection data in real time, which is convenient for the operator to read; the control keyboard 15 is convenient for the operation and setting of the equipment; the battery pack provides power support for the equipment, so that the equipment can be used in different environments; the sensor can accurately sense the motion state of the impact rod 13, providing accurate data for detection; the wireless communication module can transmit the detection data to other devices or platforms in real time, realizing remote monitoring and management of data, and improving the intelligent level and practicality of the equipment.

[0040] In order to be able to flexibly protect with the extension and retraction action of the impact rod 13, in the embodiment, the protection structure 2 comprises a protection assembly, an abutting piece and a conical cover 24 arranged outside the shell 11, the abutting piece comprises a connecting plate 25 fixedly connected to the top of the conical cover 24 and a mounting cylinder 26 fixedly connected to the outside of the shell 11, the outside of the connecting plate 25 is fixedly connected with a displacement rod 27 penetrating through the mounting cylinder 26, the outside of the displacement rod 27 is fixedly connected with a moving plate 28, and the abutting spring 29 is fixedly connected between the moving plate 28 and the mounting cylinder 26.

[0041] The protection assembly comprises a first sleeve 21 fixedly connected to the outside of the shell 11, the outside of the first sleeve 21 is slidingly connected with a second sleeve 22, the outside of the second sleeve 22 is slidingly connected with a third sleeve 23, and the conical cover 24 is fixedly connected to one end of the third sleeve 23 away from the second sleeve 22, and the first sleeve 21, the second sleeve 22, the third sleeve 23 and the conical cover 24 are all sleeved on the outside of the impact rod 13. By setting the first sleeve 21, the second sleeve 22, the third sleeve 23 and the conical cover 24 to be slidingly connected in sequence, the protection structure 2 can flexibly extend and retract with the extension and retraction action of the impact rod 13, and can provide all-round protection for the impact rod 13 when it impacts the concrete wall, effectively avoiding that foreign matters directly contact the impact rod 13, reducing the pollution and wear of the impact rod 13 by foreign matters, and prolonging the service life of the impact rod 13.

[0042] Specifically, the number of abutting pieces is two groups, which are symmetrically distributed on the outside of the conical cover 24, the displacement rod 27 and the moving plate 28 are slidingly connected in the inside of the mounting cylinder 26, and the abutting spring 29 is connected around the outside of the displacement rod 27. The abutting piece is arranged in two groups in an upper and lower symmetrical manner, and when the conical cover 24 abuts against the concrete wall, this structure can ensure the stability of abutment, so that the equipment can reliably contact the wall, ensuring the perpendicularity and stability of the equipment during detection, and improving the accuracy of detection data. At the same time, the displacement rod 27 and the moving plate 28 slide in the inside of the mounting cylinder 26, cooperating with the elastic action of the abutting spring 29, which can buffer the impact force during abutment, reducing the damage to the internal parts of the equipment.

[0043] In order to ensure the accuracy of the detection process, in this embodiment, the anti-inclination detection mechanism 6 includes a fixed shaft 61 fixedly connected to the inside of the conical cover 24, one end of the fixed shaft 61 is fixedly connected with a support ring 62, a transmission spring 63 is fixedly connected to the inner wall of the support ring 62, one end of the transmission spring 63 away from the support ring 62 is fixedly connected with an arc-shaped plate 64, a horizontal sensor 65 is fixedly installed inside the arc-shaped plate 64, the arc-shaped plate 64 and the horizontal sensor 65 are in elastic abutment with the outside of the impact lever 13, and the outside of the arc-shaped plate 64 is provided with a driving structure extending to the outside of the conical cover 24. In the process of continuous detection for many times, if the impact lever 13 is bent or inclined, the arc-shaped plate 64 and the horizontal sensor 65 are arranged in elastic abutment with the outside of the impact lever 13, so that the horizontal sensor 65 can sense the change in real time and transmit the signal to the control system of the equipment, and the operator can know the state of the impact lever 13 in time, so as to avoid the increase of measurement error caused by the inclination of the impact lever 13 and ensure the accuracy of the detection result.

[0044] The driving structure includes a moving rod 66 fixedly connected to the top of the arc-shaped plate 64 and extending to the outside of the conical cover 24, and a connecting handle 69 slidingly connected to the inside of the connecting plate 25. The top of the moving rod 66 is fixedly connected with a sliding seat 67, the inside of the sliding seat 67 is provided with a wave groove 68, one end of the connecting handle 69 is rotatably connected with a moving pin shaft 610 extending to the inside of the wave groove 68, the moving pin shaft 610 is slidingly connected to the inside of the wave groove 68, and the connecting handle 69 is reciprocatingly slidingly connected to the inside of the connecting plate 25 through the moving pin shaft 610 and extends to the outside thereof. When the arc-shaped plate 64 moves due to the inclination of the impact lever 13 or the change of impurities attached, it drives the moving rod 66 and the sliding seat 67 to move, and through the cooperation of the wave groove 68 and the moving pin shaft 610, the connecting handle 69 reciprocatingly slides, thereby providing power for the subsequent scraping structure 3, and realizing the linkage of detection and cleaning functions.

[0045] In order to avoid that the impurities attached to the surface of the impact lever 13 affect the detection precision, in this embodiment, the scraping structure 3 includes a transmission structure and a cleaning structure arranged outside the protection structure 2 and extending to the inside thereof. The cleaning structure includes two arc-shaped scraper rings 33 arranged outside the impact lever 13, and the bottom of the two arc-shaped scraper rings 33 is provided with a limiting assembly.

[0046] The transmission structure includes a transmission rod 31 fixedly connected to the other end of the connecting handle 69 and a connecting shaft 34 fixedly connected to the top of each of the two arc-shaped scraper rings 33. The bottom end of the transmission rod 31 is fixedly connected with a transmission plate 32, the inside of the transmission plate 32 is provided with a sliding groove 36, the top end of the connecting shaft 34 is rotatably connected with a roller 35 extending to the inside of the sliding groove 36, the roller 35 is slidingly connected to the inside of the sliding groove 36, and the two groups of sliding grooves 36 are oppositely arranged, and the top end of the transmission rod 31 is slidingly connected to the outside of the top displacement rod 27.

[0047] Specifically, the two arc-shaped scraping rings 33 are sleeved on the outside of the elastic striking rod 13, and the two arc-shaped scraping rings 33 are slidably connected to the inside of the third sleeve 23 through the transmission plate 32, the inside of the third sleeve 23 is provided with a transmission opening matched with the connecting shaft 34, and the inside of the transmission opening is fixedly installed with a sealing protection pad matched with the connecting shaft 34. The transmission opening matched with the connecting shaft 34 and the sealing protection pad fixedly installed in the inside of the third sleeve 23 provide accurate guidance for the movement of the connecting shaft 34, and ensure the stability of the movement of the arc-shaped scraping ring 33. At the same time, the sealing protection pad can prevent impurities from entering the inside of the transmission opening and affecting the sliding of the connecting shaft 34.

[0048] It should be noted that the limiting assembly includes a guide rod 38 fixedly connected to the inside of the third sleeve 23 and two connecting blocks 37 fixedly connected to the bottoms of the two arc-shaped scraping rings 33, the two connecting blocks 37 are slidably connected to the outside of the guide rod 38, and the two connecting blocks 37 are fixedly connected with a tension spring 39. The movement range of the arc-shaped scraping ring 33 is limited by the cooperation of the guide rod 38 and the connecting block 37, which prevents it from moving excessively or separating from the elastic striking rod 13, and the tension spring 39 keeps a certain distance between the two arc-shaped scraping rings 33 in the initial state, and can quickly reset after the scraping action is completed, ensuring the accuracy of the next cleaning action.

[0049] In order to further improve the cleanliness of the equipment, in the embodiment, the shaking-off structure 5 includes a mounting plate 51 fixedly connected to the outside of the conical cover 24, an elastic tongue 53, and a discharge opening 54 provided in the inside of the conical cover 24, and the outside of the elastic tongue 53 is provided with a knocking structure linked with the abutting piece.

[0050] The knocking structure includes a rotating shaft 52 rotatably connected to the inside of the mounting plate 51 and a tooth rod 58 fixedly connected to the top of the displacement rod 27, one end of the rotating shaft 52 is fixedly connected with a connecting roller 55, the outside of the connecting roller 55 is fixedly connected with a beating plate 56 abutting against the elastic tongue 53, the other end of the rotating shaft 52 is fixedly connected with a gear 57 engaged with the tooth rod 58, and the beating plate 56 is rotatably connected to the outside of the elastic tongue 53 through the tooth rod 58 and the displacement rod 27. The elastic tongue 53 vibrates after being knocked, and the vibration force is large, which can shake off the impurities cleaned by scraping and blowing, and discharge through the discharge opening 54, effectively avoiding the accumulation of impurities in the equipment, reducing the risk of equipment failure caused by impurity accumulation, and further improving the stability and service life of the equipment.

[0051] It should be noted that the faster the displacement member moves, the faster the displacement rod 27 moves, the transmission of the gear bar 58 and the gear 57 increases the rotating speed of the rotating shaft 52, and the rotating speed of the connecting roller 55 and the beating plate 56 also increases, the frequency of the beating elastic tongue 53 increases and the force increases, thereby generating stronger vibration, so that in the detection process, for some concrete members with more surface impurities or more tightly attached impurities, the vibration of the vibration structure 5 is enhanced, and the impurities can be more effectively shaken off and discharged, ensuring the cleanliness of the equipment interior.

[0052] In order to cooperate with the scraping structure 3, in the embodiment, the air blowing structure 4 comprises a ring-shaped nozzle 41 fixedly connected to the inside of the conical cover 24 and a piston cylinder 43 fixedly connected to the top of the shell 11, the ring-shaped nozzle 41 surrounds the outside of the elastic striking rod 13, the inside of the piston cylinder 43 is slidingly connected with a plug plate 44, the outside of the plug plate 44 is fixedly connected with a plug rod 45 extending to the outside of the piston cylinder 43, the end of the plug rod 45 away from the plug plate 44 is fixedly connected with an abutting plate 46, the abutting plate 46 and the piston cylinder 43 are fixedly connected with a return spring 47, and the abutting plate 46 abuts against one end of the top displacement rod 27. The setting of the return spring 47 enables the plug plate 44 to automatically reset under the action of the return spring 47 after the top displacement rod 27 moves away from the abutting plate 46, so that the piston cylinder 43 reabsorbs air, preparing for the next air blowing action, realizing the automatic circulation of the air blowing structure 4 and improving the cleaning efficiency.

[0053] The inside of the ring-shaped nozzle 41 is provided with a plurality of spray holes 42, the piston cylinder 43 and the ring-shaped nozzle 41 are fixedly and communicatively connected with a gas conveying pipe 49, and the outside of the piston cylinder 43 is fixedly and communicatively connected with an air inlet pipe 48.

[0054] The working principle of the above embodiment is as follows:

[0055] In use, first, abutting preparation is performed, the equipment is close to the concrete member, the conical cover 24 abuts against the concrete wall, at this time, the two groups of abutting members symmetrically distributed in the protection structure 2 play a role, the displacement rod 27 and the moving plate 28 slide in the mounting cylinder 26, cooperate with the elasticity of the abutting spring 29 to buffer the abutting impact force, ensure that the equipment and the wall can be in reliable contact, and ensure the perpendicularity and stability of the equipment during detection;

[0056] Then, the elastic striking detection is performed, under the action of the spring telescopic rod 12, the elastic striking rod 13 is ejected to impact the surface of the concrete member for strength detection, the digital display screen 14 displays the detection data in real time, facilitating the operator to read; the displacement sensor accurately senses the movement state of the elastic striking rod 13, providing accurate data for detection; the wireless communication module can transmit the detection data to other equipment or platform in real time, realizing remote monitoring and management of data;

[0057] In the detection process, the anti-inclination detection is carried out synchronously. If the striker 13 is bent or inclined, the arc-shaped plate 64 will move accordingly. The horizontal sensor 65 senses the change in real time and transmits the signal to the device control system, so that the operator can know the state of the striker 13 in time, avoid the increase of measurement error, and ensure the accuracy of the detection result.

[0058] Meanwhile, the driving structure realizes linkage. When the arc-shaped plate 64 moves due to the inclination of the striker 13 or the attachment of impurities, the moving rod 66 and the sliding seat 67 are driven to move. Through the cooperation of the wave groove 68 and the moving pin shaft 610, the connecting handle 69 reciprocates to slide, which provides power for the subsequent scraping structure 3, realizes the linkage of the detection and cleaning functions.

[0059] After the detection is completed, the scraping structure 3 starts to work. When the connecting handle 69 reciprocates, the transmission rod 31 and the transmission plate 32 are driven to move. Through the cooperation of the sliding groove 36 and the roller 35, the two arc-shaped scraping rings 33 slide outside the striker 13 to scrape the surface of the striker 13 and remove impurities. Meanwhile, the guide rod 38 and the connecting block 37 limit the movement range of the arc-shaped scraping ring 33 to prevent it from moving excessively or separating from the striker 13. The tension spring 39 keeps a certain distance between the two arc-shaped scraping rings 33 in the initial state and resets quickly after the scraping action is completed, which ensures the accuracy of the next cleaning.

[0060] The blowing structure 4 then works. When the top displacement rod 27 moves to push the abutment plate 46, the plug plate 44 slides in the piston cylinder 43 to press air into the annular spray pipe 41 through the air conveying pipe 49. The air is sprayed from the multiple spray holes 42 in the annular spray pipe 41 to blow and clean the surface of the striker 13, which further removes impurities. When the top displacement rod 27 moves away from the abutment plate 46, the plug plate 44 is automatically reset under the action of the return spring 47, so that the piston cylinder 43 reabsorbs air to prepare for the next blowing action, which realizes the automatic circulation of the blowing structure 4 and improves the cleaning efficiency.

[0061] Finally, the structure 5 works, when the displacement member moves, the displacement rod 27 moves, through the transmission of the gear rod 58 and the gear 57, the rotating shaft 52 rotates, the connecting roller 55 and the beating plate 56 rotate and beat the elastic tongue 53, the elastic tongue 53 vibrates after being beaten, the impurities cleaned by scraping and blowing are shaken off, and are discharged through the discharge port 54, effectively avoiding the accumulation of impurities in the equipment, reducing the risk of equipment failure caused by impurity accumulation, and further improving the stability and service life of the equipment. When the displacement member moves faster, the displacement rod 27 moves faster, through the transmission of the gear rod 58 and the gear 57, the rotating speed of the rotating shaft 52 is increased, the rotating speed of the connecting roller 55 and the beating plate 56 is increased, the frequency of beating the elastic tongue 53 is increased and the force is increased, and more intense vibration is generated. For concrete members with more surface impurities or tightly adhered impurities, impurities can be more effectively shaken off and discharged, ensuring the cleanliness of the equipment.

[0062] The mounting method, connection method or setting method disclosed in the embodiment are all common mechanical connection methods, as long as the beneficial effects can be achieved, and in addition, the electrical components appearing in the embodiment are all electrically connected with the master controller and the power supply. The master controller can be a conventional known device such as a computer that plays a control role. A person skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technology also belongs to the common knowledge in the art, so the specific structure and working principle of the embodiment will not be described in detail.

[0063] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0064] Although embodiments of the present application 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 therein without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A rebound testing device for use in the strength testing of concrete structures, characterized by: The device includes a rebound detection device (1), which consists of a housing (11), a spring telescopic rod (12), and a spring-loaded rod (13). The outside of the spring-loaded rod (13) is provided with a protective structure (2) for telescopic protection. The inside of the protective structure (2) is provided with an anti-tilt detection mechanism (6) extending to the outside for detecting and cleaning the outside of the spring-loaded rod (13) and a scraping structure (3). The outside of the protective structure (2) is provided with a shock-drop structure (5) used in conjunction with it. The protective structure (2) includes a protective component, abutment and conical cover (24) disposed outside the outer shell (11). The abutment includes a connecting plate (25) fixedly connected to the top of the conical cover (24) and a mounting cylinder (26) fixedly connected to the outside of the outer shell (11). A displacement rod (27) penetrating the mounting cylinder (26) is fixedly connected to the outside of the connecting plate (25). A moving plate (28) is fixedly connected to the outside of the displacement rod (27). An abutment spring (29) is fixedly connected between the moving plate (28) and the mounting cylinder (26). The anti-tilt detection mechanism (6) includes a fixed shaft (61) fixedly connected inside the conical cover (24). One end of the fixed shaft (61) is fixedly connected to a support ring (62). A transmission spring (63) is fixedly connected to the inner wall of the support ring (62). An arc plate (64) is fixedly connected to the end of the transmission spring (63) away from the support ring (62). A horizontal sensor (65) is fixedly installed inside the arc plate (64). Both the arc plate (64) and the horizontal sensor (65) abut against the outside of the impact rod (13). A drive structure extending to the outside of the conical cover (24) is provided on the outside of the arc plate (64). The drive structure includes a moving rod (66) fixedly connected to the top of the arc plate (64) and extending to the outside of the conical cover (24) and a connecting handle (69) slidably connected to the inside of the connecting plate (25). The top of the moving rod (66) is fixedly connected to a slide (67), and a wave groove (68) is provided inside the slide (67). One end of the connecting handle (69) is rotatably connected to a moving pin (610) extending into the wave groove (68). The moving pin (610) is slidably connected to the inside of the wave groove (68). The connecting handle (69) is reciprocally slidably connected to the inside of the connecting plate (25) and extends to its outside through the moving pin (610). The scraping structure (3) includes a transmission structure and a cleaning structure disposed outside the protective structure (2) and extending into it. The cleaning structure includes two arc-shaped scraping rings (33) disposed outside the impact rod (13), and a limit component is provided at the bottom of the two arc-shaped scraping rings (33).

2. The rebound testing device for strength testing of concrete components according to claim 1, characterized in that: The protective assembly includes a first sleeve (21) fixedly connected to the outside of the outer shell (11), a second sleeve (22) slidably connected to the outside of the first sleeve (21), a third sleeve (23) slidably connected to the outside of the second sleeve (22), a conical cover (24) fixedly connected to the end of the third sleeve (23) away from the second sleeve (22), the first sleeve (21), the second sleeve (22), the third sleeve (23) and the conical cover (24) are all sleeved on the outside of the spring rod (13), the number of the abutting parts is two sets, and they are symmetrically distributed on the outside of the conical cover (24), the displacement rod (27) and the moving plate (28) are slidably connected to the inside of the mounting cylinder (26), and the abutting spring (29) is connected around the outside of the displacement rod (27).

3. The rebound testing device for strength testing of concrete components according to claim 1, characterized in that: The transmission structure includes a transmission rod (31) fixedly connected to the other end of the connecting handle (69) and a connecting shaft (34) fixedly connected to the top of the two arc-shaped scraper rings (33). The bottom end of the transmission rod (31) is fixedly connected to a transmission plate (32). The transmission plate (32) has a groove (36) inside. The top end of the connecting shaft (34) is rotatably connected to a roller (35) extending into the groove (36). The roller (35) is slidably connected to the inside of the groove (36), and the two sets of grooves (36) are arranged opposite to each other. The top end of the transmission rod (31) is slidably connected to the outside of the top displacement rod (27).

4. The rebound testing device for strength testing of concrete components according to claim 3, characterized in that: The two arc-shaped scraping rings (33) are sleeved on the outside of the spring rod (13), and the two arc-shaped scraping rings (33) are slidably connected to the inside of the third sleeve (23) through the transmission plate (32). The inside of the third sleeve (23) is provided with a transmission port that is compatible with the connecting shaft (34), and a sealing protective gasket that is compatible with the connecting shaft (34) is fixedly installed inside the transmission port.

5. A rebound testing device for strength testing of concrete components according to claim 2, characterized in that: The limiting component includes a guide rod (38) fixedly connected inside the third sleeve (23) and connecting blocks (37) fixedly connected to the bottom of the two arc-shaped scraper rings (33) respectively. The two connecting blocks (37) are slidably connected to the outside of the guide rod (38), and a tension spring (39) is fixedly connected between the two connecting blocks (37).

6. The rebound testing device for strength testing of concrete components according to claim 1, characterized in that: The shaking structure (5) includes a mounting plate (51) fixedly connected to the outside of the conical cover (24), an elastic tongue (53), and a discharge port (54) opened inside the conical cover (24). The elastic tongue (53) is provided with a striking structure that is linked to the abutment. The striking structure includes a rotating shaft (52) rotatably connected to the inside of the mounting plate (51) and a toothed rod (58) fixedly connected to the top of the bottom displacement rod (27). One end of the rotating shaft (52) is fixedly connected to a connecting roller (55). The outside of the connecting roller (55) is fixedly connected to a striking plate (56) that abuts against the elastic tongue (53). The other end of the rotating shaft (52) is fixedly connected to a gear (57) that meshes with the toothed rod (58). The striking plate (56) is rotatably connected to the outside of the elastic tongue (53) through the toothed rod (58) and the displacement rod (27).

7. A rebound testing device for strength testing of concrete components according to claim 1, characterized in that: The outer shell (11) is provided with an air blowing structure (4) for linkage with the scraping structure (3) and the shaking structure (5). The air blowing structure (4) includes an annular nozzle (41) fixedly connected to the inside of the conical cover (24) and a piston cylinder (43) fixedly connected to the top of the outer shell (11). The annular nozzle (41) is connected around the outside of the impact rod (13). A stopper plate (44) is slidably connected inside the piston cylinder (43). A stopper rod (45) extending to the outside of the piston cylinder (43) is fixedly connected outside the stopper plate (44). An abutment plate (46) is fixedly connected to one end of the stopper rod (45) away from the stopper plate (44). A return spring (47) is fixedly connected between the abutment plate (46) and the piston cylinder (43). The abutment plate (46) abuts against one end of the top displacement rod (27).

8. A rebound testing device for strength testing of concrete components according to claim 7, characterized in that: The annular nozzle (41) has a number of nozzle holes (42) inside. The piston cylinder (43) and the annular nozzle (41) are fixedly connected by an air supply pipe (49). The piston cylinder (43) is fixedly connected by an air inlet pipe (48).

9. A rebound testing device for strength testing of concrete components according to claim 1, characterized in that: The spring telescopic rod (12) is fixedly installed inside the housing (11). The spring rod (13) is slidably connected inside the spring telescopic rod (12) and extends into the housing (11). The top of the housing (11) is fixedly installed with a digital display screen (14) and a control keyboard (15) through a digital display box. The inside of the digital display box is also fixedly installed with a battery pack, a displacement sensor and a wireless communication module.

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