Concrete strength detection device with automatic scanning and centering functions

Abstract

The invention discloses a concrete strength detection device with automatic scanning and centering functions, and relates to the technical field of concrete strength detection. Comprising a base, a stand column, a jacking, a hydraulic driving device, an upper pressing block, a waste barrel, a transparent protective cover and a bearing platform assembly, a centering ring rotates to drive a plurality of centering assemblies to slide synchronously, a plurality of centering push heads are made to get close synchronously, a test block is driven to slide towards the center of a bearing platform shell, and the purpose of centering the concrete test block is achieved; and the sliding consistency of the centering push head is ensured, and the centering accuracy is ensured. And the centering push head adopts a retractable design, so that the detection is prevented from being hindered, and the centering assembly is also prevented from being damaged due to the impact of concrete fragments. The centering bearing platform is locked by using the locking mechanism, so that the bearing platform shell is prevented from deflecting during detection to influence a detection result, and the stability of the bearing platform shell is ensured; the centering bearing platform freely rotates on the support shell through unlocking, and the purpose of controlling rotation of the centering bearing platform is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete strength detection, and particularly relates to a concrete strength detection device with automatic scanning and centering functions. BACKGROUND

[0002] A concrete compression testing machine is used for detecting the strength of concrete and is a core tool for evaluating the strength of concrete. By simulating the pressure conditions in a real environment, the device can accurately measure the maximum bearing capacity of a concrete test block under compression, i.e., the compressive strength. This index is a key to measuring the quality of concrete and is directly related to the structural safety and service life of a building. Therefore, the test results of the concrete compression testing machine are crucial for ensuring the quality of a project.

[0003] The existing concrete detection device needs to manually center the test block when placing the test block. If the detection personnel makes a deviation, the test block will be unevenly stressed, resulting in a large error in the detection result. In addition, when the test block is crushed under pressure, the phenomenon of flying stones is easy to occur, which can cause harm to the equipment or the workers. At the same time, the test block fragmentation can also generate dust, which can damage the laboratory environment and harm the health of the detection personnel. After detection, the detection device needs to be manually cleaned, which is extremely inconvenient. SUMMARY

[0004] The present application aims to provide a concrete strength detection device with automatic scanning and centering functions to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a concrete strength detection device with automatic scanning and centering functions includes a base, a stand column installed on the base, a top support installed on the stand column, a hydraulic drive device installed on the top support, an upper compression block installed on the output shaft of the hydraulic drive device, a waste barrel installed on the base, a bearing platform assembly installed on the base, the bearing platform assembly being located in the waste barrel, a transparent protective cover installed on the waste barrel, the transparent protective cover being connected to the bottom end of the top support, a first exhaust port being provided on the base, and the base being in communication with the bearing platform assembly through the first exhaust port.

[0006] The detection device is connected with a control cabinet, and a control system is installed in the control cabinet, which is used to control the entire detection device. A pressure sensor is arranged in the upper compression block, which is used to convert the pressure applied by the upper compression block to the test block into an electrical signal and transmit it to the control system. The transparent protective cover is used to block the flying concrete fragments and prevent dust diffusion, and the transparent material is convenient for the detection personnel to observe the state of the test block. The detection device is also provided with a scanning mechanism for scanning the position of the test block and transmitting it to the control system.

[0007] After the test block is centered, the control system starts the hydraulic drive device, the hydraulic drive device drives the upper pressing block to gradually press the test block until the test block is crushed, in the process, the pressure sensor converts the pressure applied by the upper pressing block to the test block into an electrical signal and transmits it to the control system, the control system analyzes the compressive strength of the test block according to the strength of the electrical signal, and the transparent protective cover blocks the splashing concrete fragments and prevents dust diffusion.

[0008] Further, the bearing platform assembly comprises a dust removal support, the dust removal support is arranged on the base, the dust removal support is communicated with the base through the first exhaust port, the dust removal support is provided with a locking mechanism, the dust removal support is provided with a transmission mechanism, the dust removal support is engaged with the transmission mechanism for transmission, and the top end of the dust removal support is rotatably provided with a centering bearing platform, the locking mechanism is located between the centering bearing platform and the transmission mechanism, and the transmission mechanism is engaged with the centering bearing platform for transmission.

[0009] Further, the dust removal support comprises a support shell, the support shell is provided with a locking mechanism, the top end of the support shell is rotatably provided with a centering bearing platform, the support shell is provided with a locking mechanism, the support shell is provided with a fixing piece, the fixing piece is provided with a dust removal motor, a driving shaft is connected to the output shaft of the dust removal motor, a dust removal fan is arranged on the driving shaft, the top end of the driving shaft penetrates through the transmission mechanism and is provided with a driving gear, the driving gear is engaged with the transmission mechanism for transmission, the support shell is arranged on the base, and the support shell is communicated with the base through the first exhaust port.

[0010] Further, the bottom of the support shell is provided with a second exhaust port, the second exhaust port is communicated with the first exhaust port, the support shell is provided with a dust removal chamber, the second exhaust port is communicated with the dust removal chamber, and a plurality of air inlets are arranged on the support shell and provided with filter screens.

[0011] After the test block is crushed, the control system moves the upper pressing block upward for resetting, then the control system starts the first electric telescopic rod, the output shaft of the first electric telescopic rod is retracted and drives the supporting ring to descend, the supporting ring drives the locking column to descend, the locking column slides out of the locking hole, so as to achieve the purpose of unlocking the centering bearing platform. The control system starts the dust removal motor, the output shaft of the dust removal motor drives the driving shaft to rotate, the driving shaft drives the dust removal fan to rotate, the dust removal fan drives the air in the dust removal chamber to be quickly discharged from the second exhaust port, after the air in the dust removal chamber is discharged, a negative pressure is formed, the external air containing dust is sucked into the dust removal chamber through the air inlets, and the dust is filtered by the filter screens and falls into the waste chamber, the discharged air enters the first exhaust port of the base from the second exhaust port and is discharged, so as to achieve the purpose of dust suction, filtration and collection.

[0012] When the drive shaft rotates, it synchronously drives the drive gear to rotate, which in turn drives the transmission gear to rotate. The transmission gear drives the internal gear ring to rotate, which in turn drives the base shell to rotate. The rotation of the base shell generates centrifugal force, which throws concrete fragments off the base shell. These fragments eventually fall into the waste chamber. Since the number of teeth on the drive gear is less than the number of teeth on the internal gear ring, the rotational speed of the internal gear ring is less than the rotational speed of the transmission gear. Consequently, the rotational speed of the dust collector fan is greater than the rotational speed of the base shell, achieving a differential speed effect. This reduces the rotational speed of the base shell while ensuring the dust collector fan's dust removal efficiency, thereby reducing the centrifugal force on the fragments and preventing them from damaging the detection device due to excessive centrifugal force.

[0013] Furthermore, the locking mechanism includes a first electric telescopic rod, which is mounted on the support housing. A support ring is mounted on the output shaft of the first electric telescopic rod, and several locking pins are mounted on the support ring.

[0014] Under normal conditions, the locking pin and locking hole are engaged to prevent the outer shell of the base from deflecting during testing, which would cause the test block to deflect and affect the test results.

[0015] Furthermore, the transmission mechanism includes a base tray, which is mounted on the support housing. Several rotating columns are mounted on the base tray, and transmission gears are mounted on the rotating columns. A drive shaft passes through the base tray, and the drive gear meshes with the transmission gears for transmission. The transmission gears mesh with the centering bearing platform for transmission.

[0016] Furthermore, the centering bearing platform includes a bearing platform shell, on which several slide rails are provided, and several centering grooves are provided on the bearing platform shell. An internal gear ring is provided at the bottom of the bearing platform shell, which meshes with a transmission gear for transmission. The internal gear ring is rotatably connected to the support shell. Several locking holes are provided on the bearing platform shell, and the locking holes correspond to the locking pins.

[0017] Furthermore, the centering platform also includes a centering ring, several centering components, and several cylinders. Several cylinders are rotatably installed inside the platform housing, the centering ring is rotatably installed inside the platform housing, the cylinder output shaft is rotatably connected to the centering ring, the centering components are slidably installed on the slide rail, and a transmission connecting rod is rotatably installed on the centering ring, one end of the transmission connecting rod is rotatably connected to the centering component.

[0018] Before testing, the testing personnel place the concrete specimen on the centering platform. The control cylinder activates the second electric telescopic rod, whose output shaft drives the centering pusher to extend out of the centering groove. Then, the cylinder is activated, extending its output shaft. Since the cylinder is rotatably mounted inside the platform housing and its output shaft is rotatably connected to the centering ring, the extension of the cylinder output shaft causes the centering ring to rotate within the platform housing. This rotation of the centering ring, through a transmission linkage, pulls the centering sliders. Several centering sliders, under tension, slide along the guide rail and synchronously move towards the center of the platform housing. The centering sliders, via the second electric telescopic rod, drive the centering pusher to slide, and the centering pushers synchronously move towards each other. As the centering pushers move towards each other, they pull the specimen towards the center of the platform housing, thus centering the concrete specimen. After centering, the control system uses a scanning mechanism to scan and analyze the position of the specimen. Once the specimen is centered, the control system reverses the previous operation, causing the centering pusher to retract back into the centering groove, avoiding obstruction of the test and preventing damage to the centering components from concrete fragments.

[0019] Furthermore, the centering component includes a centering slider with a sliding groove. The centering slider is slidably connected to the slide rail through the sliding groove. A second electric telescopic rod is symmetrically mounted on the centering slider. A centering push head is mounted on the output shaft of the second electric telescopic rod, and the second electric telescopic rod is located in the centering groove.

[0020] Under normal conditions, the centering pusher retracts into the centering groove, the centering pusher and the centering groove fit tightly, and the top of the centering pusher is flush with the top of the bearing shell.

[0021] Furthermore, the support shell and the waste cylinder form a waste chamber, the top of the waste cylinder is provided with a ramp, and an electric valve is provided on the waste cylinder.

[0022] The waste chamber is used to collect concrete debris and dust, and the electric valve is used to remove the collected concrete debris and dust.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The dust removal motor drives the drive shaft to rotate, which in turn drives the dust removal fan and the centering base to rotate. The dust removal fan causes the air in the dust removal chamber to be quickly discharged from the second exhaust port, creating a negative pressure in the dust removal chamber. External air containing dust is then drawn in through the air inlet and filtered through the filter screen. The dust falls into the waste chamber, thus achieving the purpose of dust removal, filtration, and collection. The rotation of the base shell generates centrifugal force, which throws concrete fragments away. The thrown fragments eventually fall into the waste chamber. By utilizing the difference in the number of teeth between the drive gear and the internal gear ring, the rotation speed of the dust removal fan is greater than that of the base shell, achieving a differential speed effect. While ensuring the dust removal efficiency of the dust removal fan, the rotation speed of the base shell is reduced, decreasing the centrifugal force on the fragments and preventing the fragments from damaging the detection device due to excessive centrifugal force.

[0025] 2. The rotation of the centering ring drives several centering components to slide synchronously, causing several centering pushers to move closer together and slide the test block towards the center of the foundation shell, achieving the purpose of centering the concrete test block. At the same time, ensuring the consistency of the sliding of the centering pushers guarantees the accuracy of centering. The centering pushers adopt a retractable design to avoid obstructing the test and to prevent the centering components from being damaged by the impact of concrete fragments.

[0026] 3. The locking mechanism is used to lock the centering bearing platform to prevent the bearing platform shell from deflecting during testing, which would affect the test results and ensure the stability of the bearing platform shell. Unlocking allows the centering bearing platform to rotate freely on the support shell, thus achieving the purpose of controlling the rotation of the centering bearing platform.

[0027] 4. Use a transparent shield to block the flying concrete fragments and prevent dust from spreading. At the same time, the transparent material makes it easy for inspectors to observe the condition of the test block. Attached Figure Description

[0028] Figure 1 This is a three-dimensional view of the detection device of the present invention;

[0029] Figure 2 This is a perspective view of the waste cylinder and support assembly of the present invention;

[0030] Figure 3 This is a perspective view of the dust removal support of the present invention;

[0031] Figure 4 This invention provides a three-dimensional representation of the locking mechanism and transmission mechanism. Figure 1 ;

[0032] Figure 5 This is a perspective view of the outer shell of the support platform of the present invention;

[0033] Figure 6 This invention provides a three-dimensional representation of the locking mechanism and transmission mechanism. Figure 2 ;

[0034] Figure 7 This invention relates to the three-dimensional design of the central support platform. Figure 1 ;

[0035] Figure 8 This invention relates to the three-dimensional design of the central support platform. Figure 2 ;

[0036] Figure 9 This is a perspective view of the centering component of the present invention.

[0037] In the diagram: 1. Base; 2. Column; 3. Top support; 4. Hydraulic drive device; 5. Upper pressure block; 6. Waste cylinder; 7. Transparent cover; 8. Support assembly; 11. First exhaust port; 61. Slope; 62. Waste chamber; 81. Dust collector support; 82. Centering support; 83. Locking mechanism; 84. Transmission mechanism; 811. Support housing; 812. Air inlet; 813. Filter screen; 814. Drive shaft; 815. Fixing component; 816. Dust collector motor; 817. Dust collector fan; 818. Dust collector chamber; 819. Second exhaust port. 831. First electric telescopic rod; 832. Support ring; 833. Locking pin; 841. Base tray; 842. Rotating pin; 843. Transmission gear; 821. Support housing; 822. Cylinder; 823. Centering ring; 824. Transmission connecting rod; 825. Centering assembly; 8211. Locking hole; 8212. Internal gear ring; 8213. Centering groove; 8214. Slide rail; 8251. Centering slider; 8252. Sliding groove; 8253. Second electric telescopic rod; 8254. Centering push head; 8141. Drive gear. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] like Figures 1-9 As shown, the present invention provides a technical solution for a concrete strength testing device with automatic scanning and centering function: it includes a base 1, a column 2 installed on the base 1, a top support 3 installed on the column 2, a hydraulic drive device 4 installed on the top support 3, an upper pressure block 5 installed on the output shaft of the hydraulic drive device 4, a waste cylinder 6 installed on the base 1, a support assembly 8 installed on the base 1, the support assembly 8 being located inside the waste cylinder 6, a transparent cover 7 installed on the waste cylinder 6, the top end of the transparent cover 7 being connected to the bottom end of the top support 3, a first exhaust port 11 provided on the base 1, and the base 1 communicating with the support assembly 8 through the first exhaust port 11.

[0040] The testing device is externally connected to a control cabinet, which houses the control system used to control the entire testing device. A pressure sensor is installed inside the upper pressure block 5, converting the pressure applied by the upper pressure block 5 to the concrete test block into an electrical signal that is transmitted to the control system. A transparent protective cover 7 is used to block splashed concrete fragments and prevent dust dispersion; its transparent material also allows testing personnel to easily observe the condition of the test block. The testing device also includes a scanning mechanism for scanning the position of the test block and transmitting the data to the control system.

[0041] The support housing 811 and the waste cylinder 6 form a waste chamber 62. The top of the waste cylinder 6 is provided with a ramp 61, and an electric valve is provided on the waste cylinder 6. The waste chamber 62 is used to collect concrete fragments and dust, and the electric valve is used to remove the collected concrete fragments and dust.

[0042] The support assembly 8 includes a dust removal support 81, which is mounted on the base 1. The dust removal support 81 is connected to the base 1 through a first exhaust port 11. A locking mechanism 83 is installed on the dust removal support 81, and a transmission mechanism 84 is installed on the dust removal support 81. The dust removal support 81 and the transmission mechanism 84 engage and drive each other. A centering support 82 is rotatably mounted on the top of the dust removal support 81. The locking mechanism 83 is located between the centering support 82 and the transmission mechanism 84, and the transmission mechanism 84 engages and drives the centering support 82.

[0043] The dust collector support 81 includes a support housing 811, a locking mechanism 83 installed on the support housing 811, a centering support 82 rotatably mounted on the top of the support housing 811, a fixing member 815 installed inside the support housing 811, a dust collector motor 816 installed on the fixing member 815, a drive shaft 814 connected to the output shaft of the dust collector motor 816, a dust collector fan 817 installed on the drive shaft 814, a drive gear 8141 installed at the top of the drive shaft 814 through a transmission mechanism 84, and a drive gear 8141 meshing with the transmission mechanism 84 for transmission. The support housing 811 is mounted on the base 1 and is connected to the base 1 through a first exhaust port 11.

[0044] The support housing 811 has a second exhaust port 819 at the bottom, which is connected to the first exhaust port 11. The support housing 811 has a dust removal chamber 818 inside, which is connected to the second exhaust port 819. The support housing 811 has several air inlets 812, and the air inlets 812 are equipped with filters 813.

[0045] The locking mechanism 83 includes a first electric telescopic rod 831, which is mounted on the support housing 811. A support ring 832 is mounted on the output shaft of the first electric telescopic rod 831, and a plurality of locking pins 833 are mounted on the support ring 832. Under normal conditions, the locking pins 833 are engaged with the locking holes 8211 to prevent the support housing 821 from deflecting during testing, which would cause the test block to deflect and affect the test results.

[0046] The transmission mechanism 84 includes a base tray 841, which is mounted on the support housing 811. Several rotating columns 842 are mounted on the base tray 841, and transmission gears 843 are mounted on the rotating columns 842. A drive shaft 814 passes through the base tray 841. The drive gear 8141 meshes with the transmission gears 843 for transmission, and the transmission gears 843 mesh with the centering support 82 for transmission.

[0047] The centering support 82 includes a support shell 821, on which a plurality of slide rails 8214 are provided, and a plurality of centering grooves 8213 are provided on the support shell 821. An internal gear ring 8212 is provided at the bottom of the support shell 821. The internal gear ring 8212 meshes with a transmission gear 843 for transmission. The internal gear ring 8212 is rotatably connected to the support shell 811. A plurality of locking holes 8211 are provided on the support shell 821, and the locking holes 8211 correspond to the locking pins 833.

[0048] The centering base 82 also includes a centering ring 823, several centering components 825, and several cylinders 822. Several cylinders 822 are rotatably installed inside the base housing 821. The centering ring 823 is rotatably installed inside the base housing 821. The output shaft of the cylinder 822 is rotatably connected to the centering ring 823. The centering components 825 are slidably installed on the slide rail 8214. A transmission connecting rod 824 is rotatably installed on the centering ring 823. One end of the transmission connecting rod 824 is rotatably connected to the centering component 825.

[0049] The centering assembly 825 includes a centering slider 8251, which has a sliding groove 8252. The centering slider 8251 is slidably connected to the slide rail 8214 through the sliding groove 8252. A second electric telescopic rod 8253 is symmetrically mounted on the centering slider 8251. A centering push head 8254 is mounted on the output shaft of the second electric telescopic rod 8253. The second electric telescopic rod 8253 is located within the centering groove 8213. In the normal state, the centering push head 8254 is retracted into the centering groove 8213, and the centering push head 8254 fits tightly into the centering groove 8213. The top of the centering push head 8254 is flush with the top of the support shell 821.

[0050] The working principle of this invention: Before testing, the testing personnel place the concrete test block on the centering bearing platform 82, and control the air cylinder to open the second electric telescopic rod 8253. The output shaft of the second electric telescopic rod 8253 drives the centering push head 8254 to extend out of the centering groove 8213. Then, the cylinder 822 is opened, and the output shaft of the cylinder 822 extends. Since the cylinder 822 is rotatably installed inside the bearing platform housing 821, and the output shaft of the cylinder 822 is rotatably connected to the centering ring 823, the extension of the output shaft of the cylinder 822 will drive the centering ring. The centering ring 823 rotates within the bearing shell 821. This rotation, via the transmission link 824, pulls the centering slider 8251. Several centering sliders 8251, under tension, slide along the slide rail 8214 and synchronously move towards the center of the bearing shell 821. The centering sliders 8251, through the second electric telescopic rod 8253, drive the centering pusher 8254 to slide. Several centering pushers 8254 synchronously move towards each other, causing the test block to slide towards the center of the bearing shell 821, thus centering the concrete test block. After centering, the control system uses a scanning mechanism to scan and analyze the position of the test block. Once the test block is centered, the control system reverses the previous operation, causing the centering pusher 8254 to retract back into the centering groove 8213, avoiding obstruction of the detection process and preventing damage to the centering assembly 825 from concrete fragments.

[0051] After the test block is aligned, the control system activates the hydraulic drive device 4, which drives the upper pressure block 5 to gradually pressurize the test block until it breaks. During this process, the pressure sensor converts the pressure applied by the upper pressure block 5 to the concrete test block into an electrical signal and transmits it to the control system. The control system analyzes the compressive strength of the concrete test block based on the strength of the electrical signal. The transparent cover 7 blocks the splashed concrete fragments and prevents dust from spreading.

[0052] After the test block is crushed, the control system moves the upper pressure block 5 upward to reset. Then, the control system starts the first electric telescopic rod 831. The output shaft of the first electric telescopic rod 831 retracts and drives the support ring 832 to descend. The support ring 832 drives the locking pin 833 to descend. The locking pin 833 slides out from the locking hole 8211, thereby unlocking the centering support platform 82. The control system turns on the dust removal motor 816. The output shaft of the dust removal motor 816 drives the drive shaft 814 to rotate. The drive shaft 814 drives the dust removal fan 817 to rotate. The dust removal fan 817 drives the air in the dust removal chamber 818 to be quickly discharged from the second exhaust port 819. After the air in the dust removal chamber 818 is discharged, a negative pressure is formed. The air containing dust is drawn in from the outside through the air inlet 812. When the dust passes through the air inlet 812, it is filtered by the filter screen 813 and falls into the waste chamber 62. The discharged air enters the first exhaust port 11 on the base 1 from the second exhaust port 819 and is discharged, thereby achieving the purpose of dust suction, filtration and collection.

[0053] When the drive shaft 814 rotates, it synchronously drives the drive gear 8141 to rotate. The drive gear 8141 drives the transmission gear 843 to rotate, and the transmission gear 843 drives the internal gear ring 8212 to rotate. The internal gear ring 8212 drives the base shell 821 to rotate. The rotation of the base shell 821 generates centrifugal force. Under the action of centrifugal force, the concrete fragments on the base shell 821 are thrown off. The thrown fragments eventually fall into the waste chamber 62. Since the number of teeth of the drive gear 8141 is less than the number of teeth of the internal gear ring 8212, the rotation speed of the internal gear ring 8212 is less than the rotation speed of the transmission gear 843. Correspondingly, the rotation speed of the dust collector fan 817 is greater than the rotation speed of the base shell 821, achieving a differential speed effect. While ensuring the dust removal efficiency of the dust collector fan 817, the rotation speed of the base shell 821 is reduced, the centrifugal force on the fragments is reduced, and the fragments are prevented from damaging the detection device due to excessive centrifugal force.

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A concrete strength testing device with automatic scanning and centering function, characterized in that: The detection device includes a base (1), a column (2) installed on the base (1), a top support (3) installed on the column (2), a hydraulic drive device (4) installed on the top support (3), an upper pressure block (5) installed on the output shaft of the hydraulic drive device (4), a waste cylinder (6) installed on the base (1), a support assembly (8) installed on the base (1), the support assembly (8) located inside the waste cylinder (6), a transparent cover (7) installed on the waste cylinder (6), the top of the transparent cover (7) connected to the bottom of the top support (3), a first exhaust port (11) provided on the base (1), and the base (1) communicating with the support assembly (8) through the first exhaust port (11).

2. The concrete strength testing device with automatic scanning and centering function according to claim 1, characterized in that: The support assembly (8) includes a dust removal support (81), which is mounted on the base (1). The dust removal support (81) is connected to the base (1) through a first exhaust port (11). A locking mechanism (83) is installed on the dust removal support (81). A transmission mechanism (84) is installed on the dust removal support (81). The dust removal support (81) and the transmission mechanism (84) are engaged and driven. A centering support (82) is rotatably mounted on the top of the dust removal support (81). The locking mechanism (83) is located between the centering support (82) and the transmission mechanism (84). The transmission mechanism (84) and the centering support (82) are engaged and driven.

3. A concrete strength testing device with automatic scanning and centering function according to claim 2, characterized in that: The dust removal support (81) includes a support shell (811), a locking mechanism (83) is installed on the support shell (811), a centering platform (82) is rotatably installed on the top of the support shell (811), a locking mechanism (83) is installed on the support shell (811), a fixing member (815) is installed inside the support shell (811), a dust removal motor (816) is installed on the fixing member (815), a drive shaft (814) is connected to the output shaft of the dust removal motor (816), a dust removal fan (817) is installed on the drive shaft (814), a drive gear (8141) is installed at the top of the drive shaft (814) through the transmission mechanism (84), the drive gear (8141) meshes with the transmission mechanism (84) for transmission, the support shell (811) is installed on the base (1), and the support shell (811) is connected to the base (1) through the first exhaust port (11).

4. A concrete strength testing device with automatic scanning and centering function according to claim 3, characterized in that: The support housing (811) has a second exhaust port (819) at the bottom, which is connected to the first exhaust port (11). The support housing (811) has a dust removal chamber (818) inside, which is connected to the dust removal chamber (818). The support housing (811) has a plurality of air inlets (812), and the air inlets (812) have filters (813).

5. A concrete strength testing device with automatic scanning and centering function according to claim 3, characterized in that: The locking mechanism (83) includes a first electric telescopic rod (831), which is mounted on the support housing (811). A support ring (832) is mounted on the output shaft of the first electric telescopic rod (831), and a plurality of locking pins (833) are mounted on the support ring (832).

6. A concrete strength testing device with automatic scanning and centering function according to claim 5, characterized in that: The transmission mechanism (84) includes a bottom tray (841), which is mounted on the support housing (811). Several rotating columns (842) are mounted on the bottom tray (841), and transmission gears (843) are mounted on the rotating columns (842). The drive shaft (814) passes through the bottom tray (841). The drive gear (8141) meshes with the transmission gear (843) for transmission, and the transmission gear (843) meshes with the centering support (82) for transmission.

7. A concrete strength testing device with automatic scanning and centering function according to claim 6, characterized in that: The centering support (82) includes a support shell (821), a plurality of slide rails (8214) are provided on the support shell (821), a plurality of centering grooves (8213) are provided on the support shell (821), an internal gear ring (8212) is provided at the bottom end of the support shell (821), the internal gear ring (8212) meshes with a transmission gear (843) for transmission, the internal gear ring (8212) is rotatably connected to the support shell (811), and a plurality of locking holes (8211) are provided on the support shell (8211), the locking holes (8211) correspond to the locking pins (833).

8. A concrete strength testing device with automatic scanning and centering function according to claim 7, characterized in that: The centering platform (82) further includes a centering ring (823), several centering components (825), and several cylinders (822). The several cylinders (822) are rotatably installed inside the platform housing (821). The centering ring (823) is rotatably installed inside the platform housing (821). The output shaft of the cylinder (822) is rotatably connected to the centering ring (823). The centering components (825) are slidably installed on the slide rail (8214). A transmission connecting rod (824) is rotatably installed on the centering ring (823). One end of the transmission connecting rod (824) is rotatably connected to the centering component (825).

9. A concrete strength testing device with automatic scanning and centering function according to claim 8, characterized in that: The centering assembly (825) includes a centering slider (8251), which has a sliding groove (8252). The centering slider (8251) is slidably connected to the slide rail (8214) through the sliding groove (8252). A second electric telescopic rod (8253) is symmetrically installed on the centering slider (8251). A centering push head (8254) is installed on the output shaft of the second electric telescopic rod (8253). The second electric telescopic rod (8253) is located in the centering groove (8213).

10. A concrete strength testing device with automatic scanning and centering function according to claim 4, characterized in that: The support shell (811) and the waste cylinder (6) form a waste chamber (62), the top of the waste cylinder (6) is provided with a ramp (61), and the waste cylinder (6) is provided with an electric valve.

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