Nondestructive ultrasonic flaw detection detector for building structure

Abstract

The invention discloses a nondestructive ultrasonic flaw detection instrument for a building structure, and relates to the technical field of ultrasonic flaw detection instruments. The nondestructive ultrasonic flaw detection instrument comprises a supporting bottom plate and an ultrasonic detection instrument body and further comprises a probe switching assembly and a connecting assembly, the ultrasonic detection instrument body is fixedly erected on the supporting bottom plate, and the probe switching assembly is installed at the probe connecting end of the ultrasonic detection instrument body through a telescopic frame. The connecting assembly is arranged at one end, far away from the ultrasonic detector main body, of the probe switching assembly. According to the invention, automatic dismounting and mounting of the probe in the nondestructive ultrasonic flaw detection instrument can be realized, probes of different specifications can be replaced according to different detection conditions, and the problem that in the prior art, when a traditional nondestructive ultrasonic flaw detection instrument detects different building structures, the probe needs to be manually replaced, and the labor force is increased is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic flaw detectors, and specifically to a non-destructive ultrasonic flaw detector for building structures. Background Art

[0002] A building structure refers to the load-bearing and supporting parts of a building, which includes various components of the building and their combination methods, aiming to ensure the safety, stability, durability and functionality of the building. A non-destructive ultrasonic flaw detector for building structures is a device used to detect internal defects in building materials and structures. It uses the principle that ultrasonic waves can penetrate materials and be reflected to scan and analyze the interior of the structure to detect potential defects such as cracks, pores and delaminations.

[0003] In order to ensure the internal stability of building structures, it is often necessary to use a non-destructive ultrasonic flaw detector for building structures to measure the internal conditions of building structures. However, due to the complex internal composition of building structures, such as containing concrete, steel and wood, and due to the large difference in acoustic impedance of different materials, corresponding frequency probes need to be matched. For example: concrete requires a low-frequency probe of 0.5 - 5 MHz to reduce scattering, while steel requires a high-frequency probe of 10 - 20 MHz to improve resolution, surface cracks require a high-frequency dual-crystal probe, and deep cavities require a low-frequency straight probe. Therefore, when using a non-destructive ultrasonic flaw detector to measure building structures, different probes need to be used for different building materials, and the staff needs to replace the corresponding probes according to the measurement requirements, with frequent steps, which increases the labor intensity of the staff.

[0004] Therefore, we propose a non-destructive ultrasonic flaw detector for building structures to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a non-destructive ultrasonic flaw detector for building structures to solve the problem that the traditional non-destructive ultrasonic flaw detector needs to manually replace the probe when detecting different building structures, which increases the labor force as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides a non-destructive ultrasonic flaw detector for building structures, which includes a support base plate and an ultrasonic detector main body, and also includes a probe switching component and a connection component. The ultrasonic detector main body is fixedly installed on the support base plate. The probe switching component is installed at the probe connection end of the ultrasonic detector main body through a telescopic frame, and the connection component is arranged at one end of the probe switching component away from the ultrasonic detector main body;

[0007] The probe switching component includes a storage bin and a plurality of probe bodies of different specifications placed in the storage bin. The storage bin is used to limit the positions of the plurality of probe bodies. A rotating rod is rotatably installed in the storage bin. One end of the rotating rod extends out of the storage bin, and a first driving mechanism is provided at this end. The plurality of probe bodies are annularly distributed on the circumference of the rotating rod. A limiting ring is movably sleeved on the outer surface of each conveying probe body. The plurality of limiting rings are fixedly connected to the rotating rod and drive the plurality of probe bodies to rotate in the storage bin under the drive of the rotating rod. Moreover, each rotating rod can rotate self in the corresponding limiting ring. A connection port penetrating the storage bin is provided on the outer surface of the storage bin. The connection port is located on the rotation trajectory of the probe body and is matched with the probe body in terms of size and position. Threaded connection parts that match each other are provided at the probe connection end of the ultrasonic detector main body and at one end of each probe body close to the ultrasonic detector main body.

[0008] The connection component includes an electric suction cup and a moving frame. The moving frame is used to drive the electric suction cup to move to the position of the connection port. The electric suction cup is used to connect with the probe body rotated to the connection port through negative pressure. A second driving mechanism is provided at the control end of the electric suction cup. By controlling the second driving mechanism, the electric suction cup rotates forward or backward, so as to realize the installation or disassembly of the probe body negatively connected to the electric suction cup and the ultrasonic detector main body.

[0009] A further technical solution of the present invention: A compression-resistant rod is fixed on the top surface of the support bottom plate. The ultrasonic detector main body is fixedly installed at the free end of the compression-resistant rod. A controller is arranged on the outer surface of the compression-resistant rod. The controller is respectively in signal connection with the control ends of the ultrasonic detector main body, the first driving mechanism, and the second driving mechanism. One end of the compression-resistant rod is fixedly connected to the ultrasonic detector main body. A compression-resistant block is provided on the ultrasonic detector main body. The telescopic frame includes a multi-stage electric push rod and a telescopic rod arranged in parallel. One ends of the multi-stage electric push rod and the telescopic rod are both connected to the compression-resistant block. The other end of the multi-stage electric push rod is fixedly connected to the outer surface of the storage bin. The other end of the telescopic rod is connected to the storage bin through a support block.

[0010] A further technical solution of the present invention: The connection component further includes a hollow rod. One end of the hollow rod is fixedly connected to the outer surface of the storage bin, and the other end is fixedly installed with a forward and reverse motor through a screw. A lead screw is rotatably installed in the hollow rod. The output end of the forward and reverse motor is fixedly connected to the lead screw. One end of the lead screw movably penetrates the inside of the hollow rod to the bottom wall. The forward and reverse motor controls the lead screw to rotate in the hollow rod. A threaded sleeve is provided at one end of the moving frame and is threadedly connected to the lead screw through the threaded sleeve. A chute is axially opened in the hollow rod, and the moving frame is slidably connected to the chute. The electric suction cup is installed at one end of the moving frame away from the lead screw.

[0011] Preferred technical solution of the present invention: The first driving mechanism includes an auxiliary frame, a driving motor and a driving gear. The auxiliary frame is fixed on the outer surface of the storage bin. The driving motor is installed on the inner wall of the auxiliary frame. The output end of the driving motor is fixedly connected with a driving rod, and the other end of the driving rod is rotatably connected with the storage bin. The driving gear is fixedly sleeved on the outer surface of the driving rod. The outer surface of the driving gear is meshed with a driven gear. One end of the rotating rod near the ultrasonic detector main body movably penetrates to the outside of the storage bin and is fixedly connected with the central rotating shaft of the driven gear.

[0012] Preferred technical solution of the present invention: The electric suction cup is rotatably connected with the moving frame. The second driving mechanism includes a servo motor and is fixedly sleeved on the electric suction cup. The servo motor is fixed on the moving frame through a bracket. A connecting rod is fixed at the output end of the servo motor. One end of the connecting rod is fixedly connected with a second gear. The outer surface of the second gear is meshed with the outer surface of the first gear; The servo motor controls the second gear to drive the first gear to rotate, thereby controlling the rotation of the electric suction cup.

[0013] Preferred technical solution of the present invention: One end of each probe body near the ultrasonic detector main body is provided with a threaded tube that is matched and connected with the threaded connection head, and the diameters of the threaded tube and the probe body are matched with the connection port. When the rotating rod drives a plurality of probe bodies to rotate, each probe body can be rotated to a position corresponding to the connection port.

[0014] Preferred technical solution of the present invention: The ultrasonic detector main body includes a signal processor. An extension rod is arranged on the outer surface of one side of the signal processor. A threaded connection head is arranged at one end of the extension rod. The free end of the compression rod is fixedly connected with the outer surface of the signal processor through a screw. The compression block is vertically arranged above the signal processor.

[0015] Preferred technical solution of the present invention: An arc-shaped groove is opened at one end of the hollow rod near the forward and reverse motor, and one end of the arc-shaped groove is communicated with the sliding groove.

[0016] Preferred technical solution of the present invention: The moving frame and the electric suction cup are rotatably connected through an elastic frame. The elastic frame includes a telescopic tube fixed on the moving frame. A spring is arranged on the outer surface of the telescopic tube. A limiting block is fixedly installed at one end of the telescopic tube near the electric suction cup. One end of the spring is fixedly connected with the outer surface of the moving frame, and the other end is fixedly connected with the outer surface of the limiting block. A connecting head is rotatably connected inside the limiting block. One end of the connecting head extends out of the limiting block and is fixedly connected with the electric suction cup.

[0017] Preferred technical solution of the present invention: An extension plate is fixedly installed on the outer surface of the limiting block. The servo motor is fixed on the extension plate; The first gear is fixed at the connection part between the connecting head and the electric suction cup.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. When the staff needs to rotate the corresponding probe body according to the characteristics of the building structure, first move the electric suction cup to the outer surface of the connection port. Through the driving motor, drive the corresponding probe body to rotate to the position corresponding to the connection port, connect the probe body with the electric suction cup, and rotate the electric suction cup to drive the corresponding threaded pipe to be sleeved on the outer surface of the threaded connection head, realizing the automatic installation of the probe in the non-destructive ultrasonic flaw detector, and solving the problem that in the prior art, the traditional non-destructive ultrasonic flaw detector needs to manually replace the probe when detecting different building structures, which increases the labor force.

[0020] 2. After the probe body is installed on the surface of the threaded connection head, in order to facilitate moving the probe body to the outside of the storage bin, reverse-start the forward and reverse motor to drive the moving frame to move in the concave direction of the arc groove in the hollow rod as shown in the figure. When the moving frame moves to the position of the arc groove, it is no longer limited, and thus rotates into the arc groove under the rotation of the lead screw, and further makes the electric suction cup rotate into the arc groove until it rotates to a position far from the connection port. Through the automatic rotation of the electric suction cup, it prevents it from blocking the detection of the building structure by the probe.

[0021] 3. When it is necessary to switch the probe in the non-destructive ultrasonic flaw detector, connect the electric suction cup to the outer surface of the probe body again, and rotate the electric suction cup to completely remove the probe body from the outer surface of the threaded connection head, that is, realize the automatic disassembly of the probe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front three-dimensional structure schematic diagram of the present invention;

[0023] Figure 2 is the side three-dimensional structure schematic diagram of the present invention;

[0024] Figure 3 is the three-dimensional structure schematic diagram of the main part of the ultrasonic detector of the present invention;

[0025] Figure 4 is the three-dimensional structure schematic diagram of the auxiliary frame part of the present invention;

[0026] Figure 5 is the three-dimensional structure schematic diagram of the limiting ring part of the present invention;

[0027] Figure 6 is the three-dimensional structure schematic diagram of the probe switching component part of the present invention;

[0028] Figure 7 is the three-dimensional structure schematic diagram of the connection component part of the present invention;

[0029] Figure 8 This is a partially sectional three-dimensional structural schematic diagram of the limit block of the present invention.

[0030] In the figure: 1, support base plate; 2, compression rod; 3, controller; 4, ultrasonic detector main body; 401, signal processor; 402, extension rod; 403, threaded connector; 5, probe switching assembly; 501, storage bin; 502, connection port; 503, auxiliary support; 504, drive motor; 505, drive rod; 506, driving gear; 507, driven gear; 508, rotating rod; 509, limit ring; 510, probe body; 511, threaded tube; 6, connection assembly; 601, hollow rod; 602, forward and reverse motor; 603, lead screw; 604, moving frame; 605, telescopic tube; 606, spring; 607, limit block; 608, connector; 609, first gear; 610, extension plate; 611, servo motor; 612, connecting rod; 613, second gear; 614, electric suction cup; 7, compression block; 8, telescopic rod; 9, multi-stage electric push rod. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] The embodiment provides a non-destructive ultrasonic flaw detector for building structures, as Figures 1-8 shown, including a support base plate 1 and an ultrasonic detector main body 4. A compression rod 2 is fixed on the top of the support base plate 1, and a traveling wheel with a brake is arranged at the bottom of the support base plate 1 for convenient movement; the ultrasonic detector main body 4 is fixedly installed at the free end of the compression rod 2, and a controller 3 is arranged on the compression rod 2, and the controller 3 is signal-connected to the ultrasonic detector main body 4. A probe switching assembly 5 is arranged at the probe connection end of the ultrasonic detector main body 4, and a connection assembly 6 is arranged on the outer surface of the probe switching assembly 5. As Figure 3 shown, the ultrasonic detector main body 4 includes a signal processor 401. An extension rod 402 is arranged on the outer surface of one side of the signal processor 401, and a threaded connector 403 is arranged at one end of the extension rod 402. One end of the compression rod 2 is fixedly connected to the outer surface of the signal processor 401 through a screw. A compression block 7 is fixedly installed on the outer surface of the other side of the signal processor 401. A multi-stage electric push rod 9 is arranged on the side of the compression block 7 close to the probe switching assembly 5, and the other end of the multi-stage electric push rod 9 is fixedly connected to the outer surface of the probe switching assembly 5. An extension rod 8 is also arranged between the compression block 7 and the storage bin 501 of the probe switching assembly 5.

[0033] In the embodiment, the probe switching component 5 is as Figures 4 to 6 shown, including a storage bin 501 and a plurality of probe bodies 510 placed in the storage bin 501. The storage bin 501 is used to limit the positions of the plurality of probe bodies 510. The specifications of each probe body 510 are different, such as low-frequency probes of 0.5 - 5 MHz, high-frequency probes of 10 - 20 MHz, etc. A rotating rod 508 is rotatably installed on the storage bin 501. The plurality of probe bodies 510 are annularly distributed on the circumference of the rotating rod 508. A limiting ring 509 is movably sleeved on the outer surface of each conveying probe body 510. The outer surfaces of the plurality of limiting rings 509 are fixedly connected to the outer surface of the rotating rod 508, and can drive the plurality of probe bodies 510 to rotate around the rotating rod 508 simultaneously under the drive of the rotating rod 508, and each probe body 510 can rotate self in the limiting ring 509. The connecting component 6 is arranged on one side of the storage bin 501 away from the ultrasonic detector main body 4; the probe switching component 5 further includes an auxiliary frame 503. The auxiliary frame 503 is fixed on one side of the storage bin 501 close to the ultrasonic detector main body 4. A driving motor 504 is arranged on the inner wall of the auxiliary frame 503. The output end of the driving motor 504 is fixedly connected with a driving rod 505. The other end of the driving rod 505 is rotatably connected to the storage bin 501. A driving gear 506 is fixedly sleeved on the outer surface of the driving rod 505. A driven gear 507 is meshed with the outer surface of the driving gear 506. One end of the rotating rod 508 close to the ultrasonic detector main body 4 movably penetrates to the outside of the storage bin 501, and the driven gear 507 is fixedly connected with the rotating rod 508. A connection port 502 is opened on the outer surface of the storage bin 501. The connection port 502 is arranged on the rotation path of the probe body 510 and corresponds to the setting position of the probe body 510. The connection port 502 penetrates through the storage bin 501. One end of each probe body 510 close to the ultrasonic detector main body 4 is provided with a threaded pipe 511, and the diameters of the threaded pipe 511 and the probe body 510 match the connection port 502. When the rotating rod 508 drives the plurality of probe bodies 510 to rotate, each probe body 510 can be rotated to a position corresponding to the connection port 502.

[0034] In the embodiment, the connecting component 6 is as Figure 7 and Figure 8As shown in the figure, it includes a hollow rod 601, an electric suction cup 614 and a moving frame 604. One end of the hollow rod 601 is fixedly connected to the outer surface of the storage bin 501, and a positive and negative motor 602 is fixedly installed at the other end of the hollow rod 601 through screws. A lead screw 603 is rotatably installed inside the hollow rod 601, and the output end of the positive and negative motor 602 is fixedly connected to the lead screw 603. One end of the lead screw 603 movably penetrates the inside of the hollow rod 601 to the bottom wall, and the positive and negative motor 602 controls the rotation of the lead screw 603 inside the hollow rod 601. One end of the moving frame 604 is provided with a threaded sleeve and is threadedly connected to the lead screw 603 through the threaded sleeve. A chute is axially provided on the hollow rod 601, and the moving frame 604 is slidably connected to the chute. An arc-shaped groove is provided at one end of the hollow rod 601 near the positive and negative motor 602, and one end of the arc-shaped groove communicates with the chute. The electric suction cup 614 is installed at the end of the moving frame 604 away from the lead screw 603. The moving frame 604 is used to drive the electric suction cup 614 to move to a position in contact with one of the probe bodies 510. The electric suction cup 614 is used to be connected to the probe body 510 through negative pressure. A first gear 609 is provided on the outer surface of the electric suction cup 614, and the first gear 609 is used to drive the electric suction cup 614 to rotate. The electric suction cup 614 sucks the probe body 510 and drives the probe body 510 to rotate. The electric suction cup 614 is connected to the moving frame 604 through a telescopic tube 605. A spring 606 is sleeved outside the telescopic tube 605. A limiting block 607 is fixedly installed at one end of the telescopic tube 605 near the electric suction cup 614. One end of the spring 606 is fixedly connected to the outer surface of the moving frame 604, and the other end of the spring 606 is fixedly connected to the outer surface of the limiting block 607. The first gear 609 is fixed at one end of the electric suction cup 614 near the limiting block 607. In order to be able to limit the electric suction cup 614 and at the same time facilitate the rotation of the electric suction cup 614, a connecting head 608 with a T-shaped cross section is provided at the connection end of the electric suction cup 614 and the limiting block 607. The inside of the limiting block 607 is hollow, and the hollow area matches the connecting head 608. The limiting block 607 is connected to the connecting head 608 in a matching manner. One end of the connecting head 608 extends out of the limiting block 607 and is fixedly connected to the electric suction cup 614 through screws. The first gear 609 can be fixed on the outer wall of the connecting head 608 or on the outer wall of the column body of the electric suction cup 614. An extension plate 610 is fixedly installed on the outer surface of the limiting block 607. A servo motor 611 is fixedly installed on the outer surface of the extension plate 610 through screws. A connecting rod 612 is fixed at the output end of the servo motor 611. One end of the connecting rod 612 is fixedly connected to a second gear 613, and the outer surface of the second gear 613 is meshed with the outer surface of the first gear 609.

[0035] In this embodiment, when it is necessary to use a non-destructive ultrasonic flaw detector to detect the stability of a building structure, the staff first move the support base plate 1 to the surface of the building structure, and align the ultrasonic detector main body 4 with the position to be detected. Then, the staff can select the probe body 510 corresponding to the building structure through the buttons on the surface of the controller 3 according to the characteristics of the building structure. The controller 3 can first start the forward and reverse motor 602 to rotate forward, drive the lead screw 603 to rotate, and then drive the moving frame 604 to move along the chute on the outer surface of the lead screw 603 towards the direction of the ultrasonic detector main body 4, as Figure 7As shown, the strip-shaped chute provided on the outer surface of the hollow rod 601 positions the moving frame 604. When the moving frame 604 drives the electric suction cup 614 to move to the outer surface of the connection port 502, the forward and reverse motor 602 can be temporarily turned off. During the later rotation of the probe body 510, the movement of the electric suction cup 614 prevents it from slipping out of the inside of the connection port 502. Then, the drive motor 504 can be started to drive the drive rod 505 to rotate, thereby driving the driving gear 506 to rotate, which in turn drives the driven gear 507 to rotate, and further causes the rotating rod 508 to rotate, thus driving the plurality of limiting rings 509 and the plurality of probe bodies 510 to rotate. When the probe body 510 matching the building structure material rotates to a position corresponding to the connection port 502, the drive motor 504 is stopped. The forward and reverse motor 602 is started again to continue rotating forward, continuing to drive the lead screw 603 to rotate, and further driving the moving frame 604 to continue moving towards the ultrasonic detector main body 4 until the adsorption surface of the electric suction cup 614 moves to a position in contact with the outer surface of the corresponding probe body 510. Then, the electric suction cup 614 can be started through the controller 3 to connect the probe body 510 and the electric suction cup 614. At the same time, the servo motor 611 is started to drive the second gear 613 to rotate, which in turn drives the first gear 609 to rotate, thereby driving the electric suction cup 614 to rotate, and further driving the probe body 510 to rotate. At this time, the forward and reverse motor 602 is continued to rotate forward to drive the electric suction cup 614 to continue moving towards the ultrasonic detector main body 4 until the inner wall of the threaded tube 511 of the probe body 510 is sleeved on the outer surface of the threaded connection head 403. Then, the forward and reverse motor 602 is turned off, and at the same time, the servo motor 611 is continued to be started to drive the electric suction cup 614 to continue rotating, so that the threaded tube 511 connected to the probe body 510 is further sleeved on the outer surface of the threaded connection head 403, causing the spring 606 to be stretched and elongated until the probe body 510 is completely sleeved on the outer surface of the threaded connection head 403. Then, the multi-stage electric push rod 9 can be started to shorten it, driving the storage bin 501 to move towards the compression rod 2. During the movement, the telescopic rod 8 plays a role in stably supporting the storage bin 501. Since the probe body 510 is tightened with the threaded connection head 403 at the front end of the extension rod 402, and the probe body 510 is movably connected to the limiting ring 509, when the storage bin 501 moves, the extension rod 402 drives the probe body 510 connected to it to remain stationary. When the length of the probe body 510 extending out of the storage bin 501 is longer than the length of the auxiliary frame 503 when the storage bin 501 moves, the multi-stage electric push rod 9 is turned off, and the electric suction cup 614 is turned off, causing the separation between the electric suction cup 614 and the probe body 510. Thus, the spring 606 drives the electric suction cup 614 to move out of the inside of the connection port 502 under its own elastic force. At the same time, the forward and reverse motor 602 is rotated in the reverse direction to drive the moving frame 604 towards Figure 7It moves in the direction of the arc-shaped groove in the hollow rod 601 shown. When the moving frame 604 moves to the position of the arc-shaped groove, it is no longer limited, and thus rotates into the arc-shaped groove under the rotation of the lead screw 603. Furthermore, the electric suction cup 614 rotates into the arc-shaped groove until it rotates to a position away from the connection port 502, thereby realizing the automatic installation of the probe in the non-destructive ultrasonic flaw detector and solving the problem in the prior art that the traditional non-destructive ultrasonic flaw detector requires manual replacement of the probe when detecting different building structures, which increases the labor force. The electric suction cup 614 rotates in the arc-shaped groove, which can prevent the electric suction cup 614 from blocking the probe body 510 and affecting its normal detection.

[0036] In the embodiment, when the electric suction cup 614 starts to work, the micro vacuum pump inside it will start, quickly extract the air inside the electric suction cup 614, sharply reduce the air pressure inside the suction cup, and form a local vacuum environment. Outside the electric suction cup 614, the atmospheric pressure still remains at the normal level. Due to the significant air pressure difference inside and outside the electric suction cup 614, the external atmospheric pressure will tightly press the object against the contact surface of the electric suction cup 614, thereby realizing the adsorption of the probe body 510; when the object needs to be released, the solenoid valve in the electric suction cup 614 will open, allowing air to re-enter the inside of the electric suction cup 614. In this way, the air pressure inside and outside the electric suction cup 614 will reach equilibrium, and the object will naturally separate from the electric suction cup 614. The connection between the limit block 607 and the connector 608 is in a T shape, aiming to limit the connector 608 while facilitating its rotation.

[0037] In this embodiment, when it is necessary to disassemble the probe in the non-destructive ultrasonic flaw detector, start the multi-stage electric push rod 9 again to extend it to the longest, drive the side of the storage bin 501 with the driven gear 507 to move to the position in contact with one end of the probe body 510 sleeved on the surface of the threaded connection head 403. Then, start the forward and reverse motor 602 to rotate forward, drive the moving frame 604 to rotate to the communicating end of the arc-shaped groove and the sliding groove, and continue to rotate the lead screw 603 so that the moving frame 604 moves into the interior of the strip-shaped sliding groove under the limiting action of the inner wall of the arc-shaped groove until the moving frame 604 completely moves into the interior of the strip-shaped groove. Then, drive the electric suction cup 614 to move along the sliding groove in the direction of the storage bin 501. When the electric suction cup 614 moves to the position in contact with the outer surface of the probe body 510, start the electric suction cup 614 again to connect the electric suction cup 614 with the outer surface of the probe body 510. Then, start the servo motor 611 in reverse to drive the first gear 609 to rotate, and then drive the electric suction cup 614 to move and rotate in the direction of the hollow rod 601, so that the spring 606 is compressed, and then drive the probe body 510 sleeved on the surface of the threaded connection head 403 to rotate under the drive of its corresponding threaded tube 511 until it completely moves out of the outer surface of the threaded connection head 403, that is, the disassembly of the probe body 510 is realized. And when the probe body 510 moves again into the interior of its corresponding limiting ring 509, the electric suction cup 614 can be closed, so that the electric suction cup 614 is separated from the probe body 510. The electric suction cup 614 resets under the elastic action of the spring 606. At the same time, start the forward and reverse motor 602 again to drive the electric suction cup 614 to move in the direction of the arc-shaped groove until the outer surface of the electric suction cup 614 completely moves out of the interior of the storage bin 501. Then, start the drive motor 504 again to drive all the probe bodies 510 to rotate to positions away from the connection port 502, that is, the disassembly of the probe in the non-destructive ultrasonic flaw detector is realized.

[0038] Usage method and working principle of this device: When it is necessary to use a non-destructive ultrasonic flaw detector to detect the stability of a building structure, the staff first move the support base plate 1 to the surface of the building structure, and align the ultrasonic detector main body 4 with the position to be detected. Then, according to the characteristics of the building structure, the probe body 510 corresponding to the building structure can be selected through the buttons on the surface of the controller 3. The controller 3 can first start the forward and reverse motor 602 to drive the lead screw 603 to rotate, and then drive the moving frame 604 to move along the outer surface of the lead screw 603. When the moving frame 604 drives the electric suction cup 614 to move to the connection port 502, the forward and reverse motor 602 can be turned off. By moving the electric suction cup 614, it can prevent the probe body 510 from slipping out of the inside of the connection port 502 during the subsequent rotation process. Then, the drive motor 504 can be started to drive the drive rod 505 to rotate, and then drive the driving gear 506 to rotate, thereby driving the driven gear 507 to rotate, and then making the rotating rod 508 rotate, thereby driving a plurality of limiting rings 509 to rotate. When the probe body 510 matching the building structure material rotates to a position corresponding to the connection port 502, the forward and reverse motor 602 can be started again to continue driving the lead screw 603 to rotate, and then drive the moving frame 604 to continue moving forward until the outer surface of the electric suction cup 614 moves to a position in contact with the outer surface of the probe body 510. The electric suction cup 614 can be started through the controller 3 to connect the probe body 510 and the electric suction cup 614, thereby realizing the adsorption of the probe body 510. At the same time, the servo motor 611 is started to drive the second gear 613 to rotate, and then drive the first gear 609 to rotate, thereby driving the electric suction cup 614 to rotate, and then driving the probe body 510 to rotate. At this time, the forward and reverse motor 602 is continued to be started to drive the electric suction cup 614 to continue moving forward until the inner wall of the threaded pipe 511 corresponding to the probe body 510 is sleeved on the outer surface of the threaded connection head 403. The forward and reverse motor 602 can be turned off, and at the same time, the servo motor 611 is continued to be started to drive the electric suction cup 614 to continue rotating, so that the threaded pipe 511 connected to the probe body 510 is further sleeved on the outer surface of the threaded connection head 403, so that the spring 606 is stretched and elongated until the probe body 510 is completely sleeved on the outer surface of the threaded connection head 403. Then, the multi-stage electric push rod 9 can be started to shorten it, driving the storage bin 501 to move in the direction of the compression rod 2. When the storage bin 501 moves to a position where one end of the probe body 510 moves out of the inside of the connection port 502 and the distance from the storage bin 501 is greater than the maximum distance of the auxiliary frame 503 from the storage bin 501, the multi-stage electric push rod 9 can be turned off, and the electric suction cup 614 can be turned off to separate the electric suction cup 614 from the probe body 510, so that the spring 606 drives the electric suction cup 614 to move out of the inside of the connection port 502 under the action of its own elastic force. At the same time, the forward and reverse motor 602 is started in the reverse direction to drive the moving frame 604 to move as shown in Figure 7Move in the direction of the arc-shaped groove in the hollow rod 601 shown. When the moving frame 604 moves to the position of the arc-shaped groove, it is no longer limited, and thus rotates into the arc-shaped groove under the rotation of the lead screw 603. Furthermore, the electric suction cup 614 rotates into the arc-shaped groove until it rotates to a position away from the connection port 502. When it is necessary to disassemble the probe in the non-destructive ultrasonic flaw detector, start the multi-stage electric push rod 9 again, extend it to the longest, drive the storage bin 501 to move to a position where its back contacts one end of the probe body 510 sleeved on the surface of the threaded connection head 403. Then, the reversible motor 602 can be started in the reverse direction again. First, drive the moving frame 604 to move and rotate in the direction of the storage bin 501. When it rotates to a position corresponding to the strip-shaped groove in the hollow rod 601 shown as Figure 7 shown, its outer surface just tightly contacts the inner wall of the arc-shaped groove. Continue to rotate the lead screw 603 so that the moving frame 604 moves into the interior of the strip-shaped groove under the limiting action of the inner wall of the arc-shaped groove until the moving frame 604 completely moves into the interior of the strip-shaped groove. Then, it can drive the electric suction cup 614 to move forward to a position where it contacts the outer surface of the probe body 510. The electric suction cup 614 can be started again to connect the electric suction cup 614 to the outer surface of the probe body 510. Then, start the servo motor 611 in the reverse direction to drive the first gear 609 to rotate, and further drive the electric suction cup 614 to move and rotate in the direction of the hollow rod 601, so that the spring 606 is compressed, and further drive the probe body 510 sleeved on the surface of the threaded connection head 403 to rotate under the drive of its corresponding threaded tube 511 until it completely moves out of the outer surface of the threaded connection head 403, and the probe body 510 moves into the interior of its corresponding limit ring 509 again. Then, the electric suction cup 614 can be turned off, so that the electric suction cup 614 is separated from the probe body 510, so that the electric suction cup 614 is reset under the elastic action of the spring 606. At the same time, start the reversible motor 602 again to drive the electric suction cup 614 to continue to move forward until the outer surface of the electric suction cup 614 completely moves out of the interior of the storage bin 501. Then, start the drive motor 504 again to drive all the probe bodies 510 to rotate to positions away from the connection port 502.

[0039] The wiring diagrams of the controller 3, the ultrasonic detector main body 4, the drive motor 504, the probe body 510, the reversible motor 602, the servo motor 611, and the multi-stage electric push rod 9 in the present invention belong to the common knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the controller 3, the ultrasonic detector main body 4, the drive motor 504, the probe body 510, the reversible motor 602, the servo motor 611, and the multi-stage electric push rod 9 will not be explained in detail.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A non-destructive ultrasonic flaw detector for building structures, comprising a support base plate (1) and an ultrasonic detector main body (4), characterized in that: It further includes a probe switching component (5) and a connection component (6). The main body (4) of the ultrasonic detector is fixedly installed on the support base plate (1). The probe switching component (5) is installed at the probe connection end of the main body (4) of the ultrasonic detector through a telescopic frame. The connection component (6) is arranged at one end of the probe switching component (5) far from the main body (4) of the ultrasonic detector; The probe switching component (5) includes a storage bin (501) and a plurality of probe bodies (510) of different specifications placed in the storage bin (501). The storage bin (501) is used to limit the plurality of probe bodies (510). A rotating rod (508) is rotatably installed in the storage bin (501). One end of the rotating rod (508) extends out of the storage bin (501), and a first driving mechanism is provided at this end. The plurality of probe bodies (510) are annularly distributed on the circumference of the rotating rod (508). A limiting ring (509) is movably sleeved on the outer surface of each conveying probe body (510). The plurality of limiting rings (509) are fixedly connected to the rotating rod (508), and drive the plurality of probe bodies (510) to rotate in the storage bin (501) simultaneously under the drive of the rotating rod (508). And each rotating rod (508) can rotate self in the corresponding limiting ring (509). A connection port (502) penetrating the storage bin is provided on the outer surface of the storage bin (501). The connection port (502) is located on the rotation track of the probe body (510), and its size and position match the probe body (510). Threaded connection parts that match each other are provided at the probe connection end of the main body (4) of the ultrasonic detector and at one end of each probe body (510) close to the main body (4) of the ultrasonic detector; The connection component (6) includes an electric suction cup (614) and a moving frame (604). The moving frame (604) is used to drive the electric suction cup (614) to move to the position of the connection port (502). The electric suction cup (614) is used to be negatively connected to the probe body (510) rotated to the connection port (502). And a second driving mechanism is provided at the control end of the electric suction cup (614). The second driving mechanism is used to control the electric suction cup (614) to rotate forward or backward, so as to realize the installation or disassembly of the probe body (510) negatively connected to the electric suction cup (614) and the main body (4) of the ultrasonic detector.

2. The non-destructive ultrasonic flaw detector for building structures according to claim 1, wherein: The top surface of the support base plate (1) is fixedly provided with a compression-resistant rod (2). The ultrasonic detector main body (4) is fixedly installed at the free end of the compression-resistant rod (2). A controller (3) is arranged on the outer surface of the compression-resistant rod (2). The controller (3) is respectively in signal connection with the control ends of the ultrasonic detector main body (4), the first driving mechanism and the second driving mechanism. One end of the compression-resistant rod (2) is fixedly connected with the ultrasonic detector main body (4). A compression-resistant block (7) is arranged on the ultrasonic detector main body (4). The telescopic frame comprises a multi-stage electric push rod (9) and a telescopic rod (8) arranged in parallel. One ends of the multi-stage electric push rod (9) and the telescopic rod (8) are both connected with the compression-resistant block (7). The other end of the multi-stage electric push rod (9) is fixedly connected with the outer surface of the storage bin (501). The other end of the telescopic rod (8) is connected with the storage bin (501) through a support block.

3. An ultrasonic flaw detector for non-destructive testing of building structures according to claim 1 or 2, characterized in that: The connection assembly (6) further comprises a hollow rod (601). One end of the hollow rod (601) is fixedly connected with the outer surface of the storage bin (501). The other end is fixedly installed with a forward and reverse motor (602) through a screw. A lead screw (603) is rotatably installed in the hollow rod (601). The output end of the forward and reverse motor (602) is fixedly connected with the lead screw (603). One end of the lead screw (603) movably penetrates through the inside of the hollow rod (601) to the bottom wall. The forward and reverse motor (602) controls the lead screw (603) to rotate in the hollow rod (601). One end of the moving frame (604) is provided with a threaded sleeve and is in threaded connection with the lead screw (603) through the threaded sleeve. A sliding groove is axially formed in the hollow rod (601), and the moving frame (604) is slidably connected with the sliding groove. An electric suction cup (614) is installed at the end of the moving frame (604) away from the lead screw (603).

4. The non-destructive ultrasonic flaw detector for building structures according to claim 1, wherein: The first driving mechanism comprises an auxiliary frame (503), a driving motor (504) and a driving gear (506). The auxiliary frame (503) is fixed on the outer surface of the storage bin (501). The driving motor (504) is installed on the inner wall of the auxiliary frame (503). The output end of the driving motor (504) is fixedly connected with a driving rod (505). The other end of the driving rod (505) is rotatably connected with the storage bin (501). The driving gear (506) is fixedly sleeved on the outer surface of the driving rod (505). The outer surface of the driving gear (506) is meshed with a driven gear (507). One end of the rotating rod (508) close to the ultrasonic detector main body (4) movably penetrates to the outside of the storage bin (501) and is fixedly connected with the central rotating shaft of the driven gear (507).

5. An ultrasonic flaw detector for non-destructive testing of building structures according to claim 1 or 2, characterized in that: The electric suction cup (614) is rotatably connected to the moving frame (604). The second driving mechanism includes a servo motor (611) and a fixing sleeve sleeved on the electric suction cup (614). The servo motor (611) is fixed on the moving frame (604) through a bracket. A connecting rod (612) is fixed to the output end of the servo motor (611). One end of the connecting rod (612) is fixedly connected with a second gear (613). The outer surface of the second gear (613) is meshed with the outer surface of the first gear (609). The rotation of the first gear (609) is controlled by driving the second gear (613) by the servo motor (611), so as to control the rotation of the electric suction cup (604).

6. The non-destructive ultrasonic flaw detector for building structures according to claim 1 or 2, characterized in that: One end of each probe body (510) close to the ultrasonic detector main body (4) is provided with a threaded tube (511) which is matched and connected with the threaded connection head (403). The diameters of the threaded tube (511) and the probe body (510) are matched with the connection port (502). When the rotating rod (508) drives a plurality of probe bodies (510) to rotate, each probe body (510) can be rotated to a position corresponding to the connection port (502).

7. An ultrasonic flaw detector for non-destructive testing of building structures according to claim 2, characterized in that: The ultrasonic detector main body (4) includes a signal processor (401). An extension rod (402) is arranged on the outer surface of one side of the signal processor (401). A threaded connection head (403) is arranged at one end of the extension rod (402). The free end of the compression rod (2) is fixedly connected with the outer surface of the signal processor (401) through a screw. The compression block (7) is vertically arranged above the signal processor (401).

8. The non-destructive ultrasonic flaw detector for building structures according to claim 3, characterized in that: An arc-shaped groove is formed at one end of the hollow rod (601) close to the forward and reverse motor (602), and one end of the arc-shaped groove is communicated with the sliding groove.

9. An ultrasonic flaw detector for non-destructive testing of building structures according to claim 5, characterized in that: The moving frame (604) is rotatably connected with the electric suction cup (614) through an elastic frame. The elastic frame includes a telescopic tube (605) fixed on the moving frame (604). A spring (606) is arranged on the outer surface of the telescopic tube (605). A limiting block (607) is fixedly installed at one end of the telescopic tube (605) close to the electric suction cup (614). One end of the spring (606) is fixedly connected with the outer surface of the moving frame (604), and the other end is fixedly connected with the outer surface of the limiting block (607). A connection head (608) is rotatably connected inside the limiting block (607). One end of the connection head (608) extends out of the limiting block (607) and is fixedly connected with the electric suction cup (614).

10. The non-destructive ultrasonic flaw detector for building structures according to claim 9, wherein: An extension plate (610) is fixedly installed on the outer surface of the limiting block (607). The servo motor (611) is fixed on the extension plate (610). The first gear (609) is fixed at the connection part of the connection head (608) and the electric suction cup (614).

Images