Movable concrete ultrasonic thickness detector

Abstract

The invention belongs to the technical field of concrete nondestructive testing, and particularly discloses a movable concrete ultrasonic thickness detector which comprises a mounting frame, a telescopic ultrasonic testing device and two groups of moving devices, the two moving devices are arranged on the two opposite sides of the bottom face of the mounting frame correspondingly. Each moving device comprises a sliding rail, an adsorption unit and an electric push rod. The slide rail is fixedly connected with the bottom surface of the mounting frame; the adsorption unit is arranged on the sliding rail and used for being adsorbed to the surface of concrete. The electric push rod is fixedly connected with the adsorption unit, and the extending end is fixedly connected with the bottom face of the mounting frame and used for driving the mounting frame to move when the adsorption unit is adsorbed to the concrete surface. The ultrasonic detection device is fixedly connected with the mounting frame, and the telescopic path of the ultrasonic detection device is perpendicular to the plane where the mounting frame is located and used for obtaining the thickness of concrete. The thickness detector can detect the thickness of concrete at any height position on a high slope or a slope, and is simple in structure, convenient to operate and high in practicability.

Description

Technical Field

[0001] The invention discloses a movable concrete ultrasonic thickness detector, belonging to the technical field of concrete non-destructive detection. Background Art

[0002] Hydropower and water conservancy projects include traditional hydropower stations, reservoirs, water diversion projects, etc., as well as new pumped storage power station projects. In hydropower and water conservancy civil engineering projects, high slope excavation and support (including slopes formed by reservoir filling) are involved. Concrete pouring on high slopes has the functions of anti-seepage and anti-seepage and ensuring structural strength, and there are strict design and construction requirements for the thickness of concrete pouring. Therefore, how to determine the thickness of concrete through non-destructive geophysical detection methods plays an important role in ensuring the quality of the project.

[0003] Most of the ultrasonic thickness detectors in the prior art achieve height adjustment of the ultrasonic probe by extending and retracting a telescopic rod. The operator needs to use other climbing devices (such as ladders, etc.) to make the ultrasonic probe fit the surface of the workpiece to be tested at a higher height. However, the length of the telescopic rod is limited. Therefore, the method of installing the ultrasonic probe on the telescopic rod will cause the area that the ultrasonic probe can actually detect to be limited by the telescopic length of the electric telescopic rod. In addition, on-site inspectors on high slopes face high-altitude operations, which have high safety risks, relatively low efficiency, and poor practicality. Summary of the invention

[0004] The purpose of the present invention is to provide a movable concrete ultrasonic thickness detector to solve the technical pain points of ultrasonic thickness detectors in the prior art, such as limited detection area, high safety risks, low efficiency and poor practicality.

[0005] The present invention provides a movable concrete ultrasonic thickness detector, comprising a mounting frame, a retractable ultrasonic detection device and two sets of moving devices;

[0006] The two groups of moving devices are respectively arranged on opposite sides of the bottom surface of the mounting frame, and each group of moving devices includes a slide rail, an adsorption unit and an electric push rod;

[0007] The slide rail is fixedly connected to the bottom surface of the mounting frame;

[0008] The adsorption unit is arranged on the slide rail and is used for adsorption on the concrete surface;

[0009] The electric push rod is fixedly connected to the adsorption unit, and the protruding end is fixedly connected to the bottom surface of the mounting frame, and is used to drive the mounting frame to move when the adsorption unit is adsorbed on the concrete surface;

[0010] The ultrasonic detection device is fixedly connected to the mounting frame, and a telescopic path of the ultrasonic detection device is perpendicular to the plane where the mounting frame is located, and is used to obtain the thickness of the concrete.

[0011] Preferably, the ultrasonic detection device comprises a support frame, an electric telescopic rod and an ultrasonic detection unit;

[0012] The support frame is arranged in the mounting frame and is fixedly connected to the inner side wall of the mounting frame;

[0013] The electric telescopic rod is fixedly connected to the support frame, and the telescopic path is perpendicular to the plane where the mounting frame is located;

[0014] The ultrasonic detection unit is fixedly connected to the telescopic end of the electric telescopic rod, and is used to obtain the thickness of the concrete when it is in contact with the concrete surface.

[0015] Preferably, the ultrasonic detection unit comprises a connection cover, a liquid storage box and an ultrasonic probe;

[0016] The connecting cover is fixedly connected to the electric telescopic rod;

[0017] The ultrasonic probe is fixedly connected to the telescopic end of the electric telescopic rod, and the ultrasonic probe is located in the connecting cover;

[0018] The liquid storage box is arranged on the connection cover and communicated with the connection cover, and is used for storing the coupling agent and releasing the coupling agent into the connection cover.

[0019] Preferably, it also includes a recovery device;

[0020] The recovery device is arranged in the ultrasonic detection device and is used for recovering the coupling agent in the ultrasonic detection device.

[0021] Preferably, the recovery device comprises a recovery pump, a connecting pipe and a suction head;

[0022] The recovery pump is fixed in the ultrasonic detection device;

[0023] One end of the connecting pipe is connected to the recovery pump, and the other end is connected to the suction head.

[0024] Preferably, the recovery device further comprises a rotating unit;

[0025] The suction head is fixedly connected to the rotating unit;

[0026] The rotating unit is connected to the ultrasonic detection device and is used to drive the suction head to rotate along the ultrasonic detection device.

[0027] Preferably, the rotating unit comprises a gear ring, a motor, a spring rod and a gear matching the gear ring;

[0028] The gear ring is arranged on the inner wall of the ultrasonic detection device;

[0029] The main shaft of the motor is fixedly connected to the gear, and the gear is meshed with the gear ring;

[0030] One end of the spring rod is fixedly connected to the gear ring, and the other end is connected to the suction head.

[0031] Preferably, the rotating unit further comprises a rotating ring and an annular cover coaxially arranged;

[0032] The rotating ring is arranged in the annular cover and is rotatably connected to the annular cover;

[0033] The connecting pipe is fixedly connected to the swivel.

[0034] Preferably, the adsorption unit comprises a suction cup and a vacuum pump connected to the suction cup;

[0035] The suction cup is arranged on a side of the slide rail away from the mounting frame;

[0036] The vacuum pump is arranged on the side wall of the slide rail.

[0037] Preferably, the number of the adsorption units is 2.

[0038] Compared with the prior art, the portable concrete ultrasonic thickness detector of the present invention has the following beneficial effects:

[0039] The present invention utilizes two groups of mobile devices to alternately adsorb on a high side slope or slope, so that the mounting frame is fixed on the high side slope or slope. The electric push rod is further extended to realize the movement of the mounting frame relative to the mobile device, and the movement of the mounting frame can drive the ultrasonic detection device to move, so that the concrete thickness detection at any height position on the high side slope or slope can be realized, and the detection area will not be limited. The structure is simple, the operation is convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a movable concrete ultrasonic thickness detector according to an embodiment of the present invention.

[0041] Figure 2 for Figure 1 Schematic diagram of the structure viewed from above.

[0042] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure.

[0043] Figure 4for Figure 3 Enlarged view of point A in the middle.

[0044] In the figure: 1. mounting frame; 2. supporting frame; 3. vacuum pump; 4. suction cup; 5. slide rail; 6. electric telescopic rod; 7. connecting cover; 8. electric push rod; 9. liquid storage box; 10. gear ring; 11. motor; 12. gear; 13. spring rod; 14. recovery pump; 15. suction head; 16. swivel; 17. ring cover; 18. connecting pipe; 19. ultrasonic probe; 20. switch valve. DETAILED DESCRIPTION

[0045] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0046] The embodiment of the present invention provides a movable concrete ultrasonic thickness detector, which is mainly characterized by being movable and adaptable to the detection of concrete thickness under complex conditions such as high slopes and slopes in hydropower and water conservancy projects. It includes a mounting frame 1, a retractable ultrasonic detection device and two sets of mobile devices.

[0047] Two groups of moving devices are respectively arranged on opposite sides of the bottom surface of the mounting frame 1, and each group of moving devices includes a slide rail 5, an adsorption unit and an electric push rod 8; the slide rail 5 is fixedly connected to the bottom surface of the mounting frame 1; the adsorption unit is arranged on the slide rail 5, and is used to be adsorbed on the concrete surface; the electric push rod 8 is fixedly connected to the adsorption unit, and the protruding end is fixedly connected to the bottom surface of the mounting frame 1, and is used to drive the mounting frame 1 to move when the adsorption unit is adsorbed on the concrete surface; the ultrasonic detection device is fixedly connected to the mounting frame 1, and the telescopic path of the ultrasonic detection device is perpendicular to the plane where the mounting frame 1 is located, and is used to obtain the thickness of the concrete.

[0048] The present invention utilizes two groups of mobile devices to alternately adsorb on the high side slope or slope, so as to realize that the mounting frame 1 is fixed on the high side slope or slope. The electric push rod 8 is further extended and retracted to realize the movement of the mounting frame 1 relative to the mobile device, and the movement of the mounting frame 1 can drive the movement of the ultrasonic detection device, so that the concrete thickness detection at any height position on the high side slope or slope can be realized, and the detection area will not be limited.

[0049] The above-mentioned adsorption unit includes a suction cup 4 and a vacuum pump 3 connected to the suction cup 4; the suction cup 4 is arranged on a side of the slide rail 5 away from the mounting frame 1; the vacuum pump 3 is arranged on the side wall of the slide rail 5. Exemplarily, the suction cup 4 is plugged into the slide rail 5.

[0050] The number of adsorption units in the embodiment of the present invention is 2, 4 in total. The 4 adsorption units are divided into two groups, which are symmetrically distributed and move alternately.

[0051] The present invention uses a suction cup 4 to fix the mounting frame 1 on a high side slope or a slope, and the fixing effect is stable and reliable, the fixing efficiency is high, and the mounting frame 1 is suitable for a relatively smooth concrete surface such as a side slope.

[0052] In order to ensure the detection effect of the ultrasonic detection device and avoid damage to the ultrasonic detection device during the movement of the mounting frame 1, the ultrasonic detection device of the embodiment of the present invention includes a support frame 2, an electric telescopic rod 6 and an ultrasonic detection unit; the support frame 2 is arranged in the mounting frame 1 and is fixedly connected to the inner side wall of the mounting frame 1; the electric telescopic rod 6 is fixedly connected to the support frame 2, and the telescopic path is perpendicular to the plane where the mounting frame 1 is located; the ultrasonic detection unit is fixedly connected to the telescopic end of the electric telescopic rod 6, and is used to obtain the thickness of the concrete when it is in contact with the concrete surface.

[0053] The present invention uses an electric telescopic rod 6 to drive the ultrasonic detection unit to move on a plane perpendicular to the mounting frame 1. When the mounting frame 1 moves, the electric telescopic rod 6 drives the ultrasonic detection unit to retract to prevent the ultrasonic detection unit from rubbing against the concrete surface and being damaged. When the mounting frame 1 is fixed in position and needs to be tested, the electric telescopic rod 6 drives the ultrasonic detection unit to extend so that the ultrasonic detection unit fits the concrete surface to detect the thickness of the concrete.

[0054] In order to ensure the accuracy of the concrete thickness detection result, the ultrasonic detection unit of the embodiment of the present invention includes a connection cover 7, a liquid storage box 9 and an ultrasonic probe 19; wherein the connection cover 7 is fixedly connected to the electric telescopic rod 6; the ultrasonic probe 19 is fixedly connected to the telescopic end of the electric telescopic rod 6, and the ultrasonic probe 19 is located in the connection cover 7; the liquid storage box 9 is arranged on the connection cover 7, and is connected to the connection cover 7 through the switch valve 20, and is used to store the coupling agent and release the coupling agent into the connection cover 7. The connection cover 7 of the embodiment of the present invention can protect the ultrasonic probe 19 and limit the flow range of the coupling agent.

[0055] Since the ultrasonic thickness detector of the present invention has a limited load-bearing capacity, the embodiment of the present invention further provides a recovery device for recovering the coupling agent to achieve the reuse of the coupling agent. The recovery device is provided in the ultrasonic detection device, specifically, the recovery device is provided on the connection cover 7 and is adjacent to the liquid storage box 9.

[0056] The recovery device of the embodiment of the present invention includes a recovery pump 14, a connecting pipe 18 and a suction head 15; the recovery pump 14 is fixed on the connecting cover 7 in the ultrasonic detection device and connected to the liquid storage box 9; one end of the connecting pipe 18 is connected to the recovery pump 14, and the other end is connected to the suction head 15. When the suction head 15 is located on the concrete surface, driven by the recovery pump 14, the suction head 15 can suck the coupling agent back to the liquid storage box 9 for reuse.

[0057] Since the thickness detector of the present invention is used on high slopes or slopes, the coupling agent will be concentrated at the lowest point in the connecting cover 7. In order to increase the recovery amount of the coupling agent, the recovery device of the embodiment of the present invention also includes a rotating unit; the suction head 15 is fixedly connected to the rotating unit; the rotating unit is connected to the inner wall of the connecting cover 7 in the ultrasonic detection device, and is used to drive the suction head 15 to rotate along the connecting cover 7 in the ultrasonic detection device, thereby rotating to the lowest point in the connecting cover 7.

[0058] In order to ensure the structural stability of the rotating unit, the rotating unit of the embodiment of the present invention includes a gear ring 10, a motor 11, a spring rod 13 and a gear 12 matched with the gear ring 10; the gear ring 10 is arranged on the inner wall of the connecting cover 7 in the ultrasonic detection device; the motor 11 is fixed to the inner wall of the connecting cover 7 in the ultrasonic detection device, and the main shaft of the motor 11 is fixedly connected to the gear 12, and the gear 12 is meshed with the gear ring 10; one end of the spring rod 13 is fixedly connected to the gear ring 10, and the other end is connected to the suction head 15. The motor 11 in the embodiment of the present invention drives the gear 12 to rotate, and the gear 12 drives the gear ring 10 and the spring rod 13 to rotate synchronously. The side walls of the motor 11 and the gear 12 are clearance-matched with the connecting pipe 18.

[0059] Furthermore, the rotating unit of the embodiment of the present invention further comprises a coaxially arranged rotating ring 16 and an annular cover 17; wherein the annular cover 17 is fixedly connected to the connecting cover 7, the rotating ring 16 is arranged in the annular cover 17 and is rotatably connected to the annular cover 17, and the center of the rotating ring 16 coincides with the center of the connecting cover 7; and the connecting tube 18 is fixedly connected to the rotating ring 16. The present invention uses the rotating ring 16 to realize that the connecting tube 18 rotates with the gear ring 10, and avoids the connecting tube 18 being too long and accumulating in the connecting cover 7, which affects the operation of the ultrasonic probe 19.

[0060] The working process of the movable concrete ultrasonic thickness detector according to the embodiment of the present invention is as follows. For the convenience of description, the two groups of adsorption units are respectively recorded as the first adsorption unit and the second adsorption unit.

[0061] First, the mounting frame 1 is placed on the slope to be tested, and the corresponding vacuum pump 3 is used to make the suction cup 4 in the first adsorption unit firmly adsorbed on the slope of the reservoir, and then the corresponding electric push rod 8 is retracted to realize the movement of the mounting frame 1 relative to the suction cup 4 adsorbed on the slope, and then the corresponding vacuum pump 3 on the other side is operated to realize the suction cup 4 in the second adsorption unit firmly adsorbed on the slope, and then the vacuum pump 3 of the suction cup 4 in the first adsorption unit is turned off to realize the suction cup 4 in the first adsorption unit to be separated from the slope surface, and then the electric push rod 8 on the second adsorption unit side is extended to realize the movement of the mounting frame 1 relative to the suction cup 4 in the second adsorption unit, thereby realizing the continuous movement of the mounting frame 1. The present invention realizes the movement of the mounting frame 1 to any height position along the slope of the reservoir through the alternating movement of two groups of adsorption units, and after the mounting frame 1 reaches the corresponding height position, the electric telescopic rod 6 is extended to realize the movement of the connecting cover 7 to fit the surface of the slope of the reservoir, and the ultrasonic probe 19 fits the surface of the slope of the reservoir to realize the detection of the concrete thickness at that point.

[0062] When detecting the thickness of concrete, after the cover opening of the connecting cover 7 is in contact with the sealing slope surface, the coupling agent in the liquid storage box 9 is filled into the connecting cover 7 through the switch valve 20, that is, it is ensured that the contact surface is sealed and free of air when the ultrasonic probe 19 is moved to the contact slope surface, and the recovery pump 14 provided can re-extract the coupling agent in the connecting cover 7 into the liquid storage box 9.

[0063] In the embodiment of the present invention, the top of the inner cover of the connection cover 7 is fixedly connected to a circular cover 17 which is communicated with the water inlet end of the recovery pump 14, and the cover opening of the circular cover 17 is rotatably connected to a swivel 16, the center of the swivel 16 coincides with the center of the connection cover 7, and a connecting pipe 18 is fixedly connected to the swivel 16, and one end of the connecting pipe 18 is connected to a suction head 15 arranged at the lowest point of the connection cover 7. A sealing gasket is arranged at the joint between the swivel 16 and the circular cover 17 of the embodiment of the present invention, so as to ensure that the swivel 16 and the circular cover 17 can be sealed and rotated at the same time. When the mounting frame 1 is located on the slope of the reservoir, the connection cover 7 is in an inclined state. When the coupling agent inside the connection cover 7 is recovered, the connecting pipe 18 and the swivel 16 are driven by the suction head 15 to rotate to the lowest point of the connection cover 7, that is, close to one end of the bottom of the slope, and through the extraction action of the recovery pump 14, the coupling agent in the connection cover 7 is finally returned to the liquid storage box 9 along the suction head 15, the connecting pipe 18, the circular cover 17, and the recovery pump 14.

[0064] In the embodiment of the present invention, a toothed ring 10 is embedded in the bottom edge of the inner wall of the connection cover 7 , a spring rod 13 is fixedly connected to the inner wall of the toothed ring 10 , and a suction head 15 is installed at the telescopic end of the spring rod 13 .

[0065] Specifically: the spring rod 13 can ensure that the initial position of the suction head 15 is located outside the connection cover 7, so when the connection cover 7 moves, the suction head 15 can be forced to move into the connection cover 7 and be located at the lowest point of the connection cover 7. The inner wall of the connection cover 7 is fixedly connected with a motor 11, and the main shaft of the motor 11 is fixedly connected with a gear 12 meshing with the gear ring 10. The side walls of the motor 11 and the gear 12 are clearance-matched with the connection pipe 18, and the gear 12 is driven to rotate by the motor 11, thereby realizing that the meshing gear ring 10 drives the spring rod 13 and the suction head 15 to move, so that the suction head 15 can smoothly rotate to the lowest point in the connection cover 7.

[0066] The wiring diagram of the vacuum pump 3, the electric telescopic rod 6, the electric push rod 8, the motor 11 and the recovery pump 14 (water pump) in the present invention belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the vacuum pump 3, the electric telescopic rod 6, the electric push rod 8, the motor 11 and the recovery pump 14 are no longer explained in detail.

[0067] The present invention utilizes two groups of mobile devices to alternately adsorb on the high side slope or slope, so that the mounting frame 1 is fixed on the high side slope or slope. The electric push rod 8 is further extended to realize the movement of the mounting frame 1 relative to the mobile device. The movement of the mounting frame 1 can drive the movement of the ultrasonic detection device, so that the concrete thickness detection at any height position on the high side slope or slope can be realized, and the detection area will not be limited. The structure is simple, the operation is convenient, and the practicability is strong.

[0068] The above are only several embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession, without departing from the scope of the technical solution of the present invention, using the above disclosed technical content to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A portable concrete ultrasonic thickness detector, characterized in that: It includes a mounting frame, a retractable ultrasonic detection device and two sets of moving devices; The two groups of moving devices are respectively arranged on opposite sides of the bottom surface of the mounting frame, and each group of moving devices includes a slide rail, an adsorption unit and an electric push rod; The slide rail is fixedly connected to the bottom surface of the mounting frame; The adsorption unit is arranged on the slide rail and is used for adsorption on the concrete surface; The electric push rod is fixedly connected to the adsorption unit, and the protruding end is fixedly connected to the bottom surface of the mounting frame, and is used to drive the mounting frame to move when the adsorption unit is adsorbed on the concrete surface; The ultrasonic detection device is fixedly connected to the mounting frame, and a telescopic path of the ultrasonic detection device is perpendicular to the plane where the mounting frame is located, and is used to obtain the thickness of the concrete.

2. The portable concrete ultrasonic thickness detector according to claim 1 is characterized in that: The ultrasonic detection device comprises a support frame, an electric telescopic rod and an ultrasonic detection unit; The support frame is arranged in the mounting frame and is fixedly connected to the inner side wall of the mounting frame; The electric telescopic rod is fixedly connected to the support frame, and the telescopic path is perpendicular to the plane where the mounting frame is located; The ultrasonic detection unit is fixedly connected to the telescopic end of the electric telescopic rod, and is used to obtain the thickness of the concrete when it is in contact with the concrete surface.

3. The portable concrete ultrasonic thickness detector according to claim 2 is characterized in that: The ultrasonic detection unit comprises a connection cover, a liquid storage box and an ultrasonic probe; The connecting cover is fixedly connected to the electric telescopic rod; The ultrasonic probe is fixedly connected to the telescopic end of the electric telescopic rod, and the ultrasonic probe is located in the connecting cover; The liquid storage box is arranged on the connection cover and communicated with the connection cover, and is used for storing the coupling agent and releasing the coupling agent into the connection cover.

4. The portable concrete ultrasonic thickness detector according to any one of claims 1 to 3, characterized in that: Also includes a recovery device; The recovery device is arranged in the ultrasonic detection device and is used for recovering the coupling agent in the ultrasonic detection device.

5. The portable concrete ultrasonic thickness detector according to claim 4 is characterized in that: The recovery device comprises a recovery pump, a connecting pipe and a suction head; The recovery pump is fixed in the ultrasonic detection device; One end of the connecting pipe is connected to the recovery pump, and the other end is connected to the suction head.

6. The portable ultrasonic concrete thickness detector according to claim 5 is characterized in that: The recovery device also includes a rotating unit; The suction head is fixedly connected to the rotating unit; The rotating unit is connected to the ultrasonic detection device and is used to drive the suction head to rotate along the ultrasonic detection device.

7. The portable concrete ultrasonic thickness detector according to claim 6 is characterized in that: The rotating unit comprises a gear ring, a motor, a spring rod and a gear matching the gear ring; The gear ring is arranged on the inner wall of the ultrasonic detection device; The main shaft of the motor is fixedly connected to the gear, and the gear is meshed with the gear ring; One end of the spring rod is fixedly connected to the gear ring, and the other end is connected to the suction head.

8. The portable concrete ultrasonic thickness detector according to claim 7 is characterized in that: The rotating unit also includes a rotating ring and an annular cover which are coaxially arranged; The rotating ring is arranged in the annular cover and is rotatably connected to the annular cover; The connecting pipe is fixedly connected to the swivel.

9. The portable concrete ultrasonic thickness detector according to claim 1 is characterized in that: The adsorption unit includes a suction cup and a vacuum pump connected to the suction cup; The suction cup is arranged on a side of the slide rail away from the mounting frame; The vacuum pump is arranged on the side wall of the slide rail.

10. The portable concrete ultrasonic thickness detector according to claim 9, characterized in that: The number of the adsorption units is 2.

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