Sound wave detection device and rock sound wave test board

Abstract

The invention relates to the technical field of mechanical test equipment, in particular to a sound wave detection device and a rock sound wave test bench, the sound wave detection device comprises a base, the base is provided with a bearing table, and the bearing table is provided with a plurality of detection stations; the mounting assembly is used for mounting the test piece on the bearing table; the detection assembly comprises a moving mechanism, a floating centering mechanism, a clamping and fixing mechanism and a detection mechanism cleaning assembly, the cleaning assembly comprises a mounting boss, a pressing triggering mechanism and a wiping mechanism, the triggering mechanism is pressed when the clamping and fixing mechanism clamps the mounting boss, and the wiping mechanism is triggered to be started when the triggering starting mechanism is pressed; and the wiping mechanism is used for wiping the detection mechanism. By arranging the multi-station bearing table, the detection assembly integrating visual centering and floating adjustment and the trigger type automatic cleaning assembly, high-precision self-adaptive centering and constant-voltage stable coupling of the transducer and the test piece and automatic removal of a coupling agent after testing are achieved.

Description

Technical Field

[0001] This invention relates to the field of mechanical testing equipment technology, specifically to an acoustic wave detection device and a rock acoustic wave testing platform. Background Technology

[0002] In the fields of rock mechanics and engineering geology, acoustic wave detection of indoor rock specimens is an important means of evaluating the physical and mechanical properties of rock masses and detecting the degree of internal damage. By measuring the propagation speed of sound waves in the specimen, parameters such as rock integrity, density, and elastic modulus can be indirectly reflected, and it is widely used in rock mass quality classification, damage evolution research, and engineering stability evaluation.

[0003] Traditional rock ultrasonic testing relies heavily on manual operation. For example, a probe holder for rock ultrasonic testing, as disclosed in publication number "CN214174239U," places the transmitting and receiving transducers (probes) on both sides of the specimen. A coupling agent (such as grease or glycerin) is applied to the contact surface between the probe and the specimen, and then the operator manually presses the probe to ensure coupling. This method has the following significant drawbacks: First, the application of the coupling agent and the pressing of the probe are entirely dependent on manual operation: the operator must apply the coupling agent to the specimen or probe and then manually press the probe to ensure full contact.

[0004] For materials with rough surfaces such as sandstone and concrete, greater pressure needs to be applied. However, it is difficult to quantify the force applied manually, which can easily lead to two problems: first, insufficient pressure results in inadequate coupling and distorted test data; second, excessive pressure may damage low-strength specimens (such as coal and rock). In addition, fluctuations in the pressure applied by different operators or by the same operator multiple times can introduce human error, leading to poor data repeatability and affecting the reliability of test conclusions. Summary of the Invention

[0005] The purpose of this invention is to provide an acoustic wave detection device and a rock acoustic wave testing station to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: On the one hand, a sound wave detection device is provided, comprising: The base is provided with a support platform, and the support platform is provided with several testing stations; The mounting component is used to mount the specimen onto the support platform; The detection component includes a moving mechanism, a floating centering mechanism, a clamping and fixing mechanism, and a detection mechanism. The moving mechanism is used to drive the detection mechanism to move. The floating centering mechanism is used to adjust the position of the detection mechanism in the horizontal plane to accommodate the positional error of the specimen. The clamping and fixing mechanism is used to clamp the specimen when the detection mechanism and the specimen are in contact. The detection mechanism is used to detect the internal damage of the specimen. A cleaning component includes a mounting boss, a pressing trigger mechanism, and a wiping mechanism. The mounting boss is disposed on the support platform. When the clamping and fixing mechanism clamps the mounting boss, it presses the pressing trigger mechanism. When the trigger opening mechanism is pressed, it opens the wiping mechanism. The wiping mechanism is disposed on the mounting boss and is used to wipe the detection mechanism.

[0007] Preferably, the mounting assembly includes a fixing base, which is respectively disposed on both sides of the testing station. The fixing base is connected to the support platform by bolts, and the fixing base is used to fix both sides of the specimen.

[0008] Preferably, a base plate is provided on both sides of the base, the base plate is provided with a circular guide rail, the moving mechanism includes a moving block and a moving cylinder, the moving block is slidably connected to the circular guide rail, the moving block is provided with the moving cylinder, and the detection mechanism is provided on the moving cylinder.

[0009] Preferably, the detection mechanism includes a mounting platform, a movable rod, a transducer, and a pressure sensor. The mounting platform is connected to the movable cylinder, which drives the movable rod to move. The movable rod is movably connected to the mounting platform, and the transducer and the pressure sensor are mounted on the movable rod.

[0010] Preferably, the mounting platform has a limiting groove, and the floating centering mechanism includes a limiting spring and a limiting ring. A plurality of the limiting springs are arranged around the limiting groove, and the two ends of the limiting springs are respectively connected to the side wall of the limiting groove and the limiting ring. The limiting ring is sleeved on the movable rod.

[0011] Preferably, the movable rod is provided with a tapered portion, and the clamping and fixing mechanism includes a roller, a clamping block and a return spring. The clamping block is rotatably connected to the mounting platform, and the non-clamping end of the clamping block is provided with a roller. The return spring is provided at the connection between the clamping block and the mounting platform, and the return spring is used to make the roller fit against the tapered portion.

[0012] Preferably, the wiping mechanism includes a wiping motor, a connector, and a wiping block. The wiping motor is connected to the mounting boss, the output end of the wiping motor is connected to the connector, and the connector is connected to the wiping block.

[0013] Preferably, the pressing trigger mechanism includes a self-reset switch, which is disposed on the mounting boss. When the clamping block is clamped on the mounting boss, it will press against the self-reset switch, at which time the wiping motor will start.

[0014] Preferably, the outlines of the mounting boss and the testing station are both circular, and the trajectory of the circular guide rail passes through the center of the mounting boss and the testing station.

[0015] On the other hand, a rock acoustic wave test bench is provided, including the aforementioned acoustic wave detection device.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting up a multi-station support platform, integrating a visual alignment and floating adjustment detection component, and a trigger-type automatic cleaning component, this invention achieves high-precision adaptive alignment between the probe and the specimen, constant-pressure stable coupling, and automatic removal of the coupling agent after testing, significantly improving the accuracy of acoustic wave testing. At the same time, the multi-station design and fully automated process support continuous batch testing, greatly improving testing efficiency, reducing the intensity of manual operation and technical threshold, and effectively avoiding specimen damage and data errors caused by manual intervention. It is especially suitable for rapid, non-destructive, and batch mechanical property testing of materials such as rocks and concrete. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the support platform structure of the present invention; Figure 4 This is a schematic diagram of the axial view structure of the cleaning component of the present invention; Figure 5 This is a schematic diagram of the clamping and fixing mechanism and the connection structure of the substrate of the present invention; Figure 6 This is a three-dimensional structural diagram of the clamping and fixing mechanism of the present invention. Figure 1 Figure 7 This is a three-dimensional structural diagram of the clamping and fixing mechanism of the present invention. Figure 2 ; Figure 8 This is a three-dimensional structural diagram of the clamping and fixing mechanism of the present invention. Figure 3 ; Figure 9This is a three-dimensional structural diagram of the clamping and fixing mechanism of the present invention. Figure 4 (Sectional view of the mounting platform); Figure 10 This is a schematic diagram of the floating centering mechanism of the present invention.

[0018] In the diagram: 1. Base, 2. Support platform, 3. Inspection station, 4. Specimen, 5. Mounting boss, 6. Fixed seat, 7. Base plate, 8. Circular guide rail, 9. Moving block, 10. Moving cylinder, 11. Mounting platform, 12. Movable rod, 13. Conical part, 14. Monocular camera, 15. Transducer, 16. Pressure sensor, 17. Limiting spring, 18. Limiting ring, 19. Roller, 20. Clamping block, 21. Return spring, 22. Wiping motor, 23. Connector, 24. Wiping block, 25. Self-resetting switch. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-10 The present invention provides a technical solution: A sound wave detection device, as shown in the instruction manual. Figure 1 As shown, it includes: The base 1 is provided with a support platform 2, which is provided with several testing stations 3. The testing stations 3 are used to place the rock specimen 4 to be tested and to ensure that the specimen 4 remains stable during the testing process.

[0021] The mounting component is used to mount specimen 4 onto the support platform 2.

[0022] The detection assembly includes a moving mechanism, a floating alignment mechanism, a clamping and fixing mechanism, and a detection mechanism. The moving mechanism drives the detection mechanism to move so that it can accurately align with the surface of the specimen 4. The floating alignment mechanism adjusts the position of the detection mechanism in the horizontal plane to accommodate the positional error of the specimen 4, ensuring that the detection mechanism is perpendicularly aligned with the surface of the specimen 4, preventing the specimen 4 from shifting after being subjected to force, ensuring the stability of the detection process, and improving the detection accuracy. The clamping and fixing mechanism clamps the specimen 4 when the detection mechanism and the specimen 4 are in contact. The detection mechanism obtains the internal structural information of the specimen 4 through acoustic signals, determines its mechanical state, and thus detects the internal damage of the specimen 4.

[0023] The cleaning component includes a mounting boss 5, a pressing trigger mechanism, and a wiping mechanism. The mounting boss 5 is located on the support platform 2. When the clamping and fixing mechanism clamps the mounting boss 5, it will press the trigger mechanism. When the trigger opening mechanism is pressed, it will open the wiping mechanism. The wiping mechanism is located on the mounting boss 5 and is used to wipe the detection mechanism.

[0024] The mounting components include mounting bases 6, which are respectively set on both sides of the testing station 3. The mounting bases 6 are connected to the support platform 2 by bolts. The mounting bases 6 are used to fix the two sides of the test piece 4, thereby preventing the test piece 4 from shifting or shaking during the testing process and ensuring the accuracy of the test.

[0025] Both sides of the base 1 are provided with base plates 7. The base plates 7 are provided with circular guide rails 8. The moving mechanism includes a moving block 9 and a moving cylinder 10. The moving block 9 is slidably connected to the circular guide rail 8. It can move along the circular guide rail 8 through electrical control. The moving block 9 is provided with the moving cylinder 10. The detection mechanism is provided on the moving cylinder 10.

[0026] The testing mechanism includes a mounting platform 11, a movable rod 12, a transducer 15, and a pressure sensor 16. The mounting platform 11 is connected to a movable cylinder 10, which drives the movable rod 12 to move. The movable rod 12 is movably connected to the mounting platform 11. The movable rod 12 is equipped with a transducer 15 and a pressure sensor 16. In this embodiment, a monocular camera 14 is also provided on the movable rod 12. The monocular camera 14 is used to observe the surface condition of the specimen 4 in real time and assist in locating the testing point.

[0027] Mounting platform 11 has a limiting groove. The floating centering mechanism includes a limiting spring 17 and a limiting ring 18. Several limiting springs 17 are arranged around the limiting groove. The two ends of the limiting springs 17 are respectively connected to the side wall of the limiting groove and the limiting ring 18. The limiting ring 18 is sleeved on the movable rod 12. Through the elastic adjustment of the spring, the detection mechanism can adaptively fine-tune when contacting the test piece 4 to maintain a vertical centering state.

[0028] The movable rod 12 is provided with a tapered portion 13. The clamping and fixing mechanism includes a roller 19, a clamping block 20, and a return spring 21. The clamping block 20 is rotatably connected to the mounting platform 11. The non-clamping end of the clamping block 20 is provided with a roller 19. The return spring 21 is provided at the connection between the clamping block 20 and the mounting platform 11. The return spring 21 is used to make the roller 19 fit against the tapered portion 13. As the movable rod 12 continues to extend, its tapered portion 13 pushes the roller 19 of the clamping and fixing mechanism, causing the clamping block 20 to rotate and clamp the side of the specimen 4, providing auxiliary fixing.

[0029] The wiping mechanism includes a wiping motor 22, a connector 23, and a wiping block 24. The wiping motor 22 is connected to the support platform 2 and has a mounting boss 5. The output end of the wiping motor 22 passes through the mounting boss 5 and is connected to the connector 23. The connector 23 is connected to the wiping block 24. In this embodiment, the wiping block 24 is connected to the connector 23 via a Velcro or elastic ring connection structure for easy replacement and maintenance.

[0030] The press trigger mechanism includes a self-reset switch 25, which is located on the mounting boss 5. When the clamping block 20 is clamped on the mounting boss 5, it will press against the self-reset switch 25, at which time the wiping motor 22 will start.

[0031] Both the mounting boss 5 and the inspection station 3 have circular outlines. The circular guide rail 8 passes through the center of the mounting boss 5 and the inspection station 3, ensuring that the inspection mechanism can accurately cover the inspection station 3 and the cleaning station during the movement, thereby improving the working efficiency and automation of the equipment.

[0032] In this embodiment, a numerical control (CNC) device is also provided, including a processor, memory, and various input / output interfaces (such as analog input interfaces, digital I / O interfaces, camera interfaces, motor drive interfaces, etc.). The CNC device is connected to the pressure sensor 16, the monocular camera 14, various actuators (such as the moving cylinder 10, the wiping motor 22, etc.), and the self-reset switch 25 via cables. After the operator sets the test sequence (target pressure, test station, etc.) on the CNC interface and starts the test, the CNC device first controls the circular guide rail 8 to run according to the program. The monocular camera 14 acquires the image in front, causing the transducer 15 to move along the circular guide rail 8 to approximately in front of the first target detection station 3. The image processing algorithm identifies the contour of the clamping part of the transducer 15 and the visual markings (such as the center of a circle) on the support platform 2, and calculates the positional deviation. Based on the deviation, the CNC device fine-tunes the circumferential position of the probe arm by controlling the moving motor 9, achieving precise alignment of the transducer 15 with the station. This process utilizes visual feedback, replacing manual visual adjustment.

[0033] Working principle: After placing the rock specimen 4 to be tested on the bearing platform 2 at the testing station 3 and applying coupling agent, the moving mechanism drives the connected moving block 9 to move via the circular guide rail 8, so that the testing mechanism is accurately positioned above the specimen 4; the floating centering mechanism uses the elastic deformation of the limit spring 17 to make the tapered part 13 at the front end of the movable rod 12 contact the roller 19 of the clamping block 20 to generate adaptive fine adjustment, ensuring that the testing mechanism is perpendicularly aligned with the surface of the specimen 4; then the moving cylinder 10 pushes the movable rod 12 down, and the clamping block 20 is pressed down on the roller 19. 9. After being pressed, the device rotates around the axis to clamp the side of the test piece 4. At the same time, the monocular camera 14 captures the surface state of the test piece 4 in real time to assist in locating the detection point. The detection mechanism emits sound wave signals through the transducer 15 to penetrate the test piece 4. The pressure sensor 16 monitors the contact pressure and obtains internal structural information to assess the mechanical state and damage. After the test is completed, the moving mechanism moves the detection mechanism to the mounting boss 5. The clamping and fixing mechanism triggers the pressing mechanism to start the wiping motor 22, which drives the wiping block 24 to clean the detection mechanism and prepare it for the next test.

[0034] Although embodiments of the invention 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sound wave detection device, characterized in that, include: The base is provided with a support platform, and the support platform is provided with several testing stations; Mounting components, the mounting components being used to mount the specimen onto the support platform; The detection component includes a moving mechanism, a floating centering mechanism, a clamping and fixing mechanism, and a detection mechanism. The moving mechanism is used to drive the detection mechanism to move. The floating centering mechanism is used to adjust the position of the detection mechanism in the horizontal plane to accommodate the positional error of the specimen. The clamping and fixing mechanism is used to clamp the specimen when the detection mechanism and the specimen are in contact. The detection mechanism is used to detect the internal damage of the specimen. A cleaning component includes a mounting boss, a pressing trigger mechanism, and a wiping mechanism. The mounting boss is disposed on the support platform. When the clamping and fixing mechanism clamps the mounting boss, it presses the pressing trigger mechanism. When the trigger opening mechanism is pressed, it opens the wiping mechanism. The wiping mechanism is disposed on the mounting boss and is used to wipe the detection mechanism.

2. The acoustic wave detection device according to claim 1, characterized in that: The mounting assembly includes a fixing base, which is respectively disposed on both sides of the testing station. The fixing base is connected to the support platform by bolts and is used to fix both sides of the specimen.

3. The acoustic wave detection device according to claim 1, characterized in that: Both sides of the base are provided with base plates, and the base plates are provided with circular guide rails. The moving mechanism includes a moving block and a moving cylinder. The moving block is slidably connected to the circular guide rail, and the moving block is provided with the moving cylinder. The detection mechanism is provided with the moving cylinder.

4. The acoustic wave detection device according to claim 3, characterized in that: The detection mechanism includes a mounting platform, a movable rod, a transducer, and a pressure sensor. The mounting platform is connected to the movable cylinder, which drives the movable rod to move. The movable rod is movably connected to the mounting platform, and the transducer and the pressure sensor are mounted on the movable rod.

5. The acoustic wave detection device according to claim 4, characterized in that: The mounting platform has a limiting groove, and the floating centering mechanism includes a limiting spring and a limiting ring. Several limiting springs are arranged around the limiting groove. The two ends of the limiting springs are respectively connected to the side wall of the limiting groove and the limiting ring. The limiting ring is sleeved on the movable rod.

6. The acoustic wave detection device according to claim 4, characterized in that: The movable rod is provided with a tapered portion. The clamping and fixing mechanism includes a roller, a clamping block and a return spring. The clamping block is rotatably connected to the mounting platform. The non-clamping end of the clamping block is provided with a roller. The return spring is provided at the connection between the clamping block and the mounting platform. The return spring is used to make the roller fit against the tapered portion.

7. The acoustic wave detection device according to claim 6, characterized in that: The wiping mechanism includes a wiping motor, a connector, and a wiping block. The wiping motor is connected to the mounting boss, the output end of the wiping motor is connected to the connector, and the connector is connected to the wiping block.

8. The acoustic wave detection device according to claim 7, characterized in that: The press trigger mechanism includes a self-reset switch, which is disposed on the mounting boss. When the clamping block is clamped on the mounting boss, it will press against the self-reset switch, at which time the wiping motor will start.

9. The acoustic wave detection device according to claim 3, characterized in that: The mounting boss and the testing station are both circular in shape, and the trajectory of the circular guide rail passes through the center of the mounting boss and the testing station.

10. A rock acoustic wave testing station, characterized in that, Includes the acoustic wave detection device according to any one of claims 1-9.

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