Concrete filled steel tube construction quality nondestructive testing device based on ultrasonic waves

Abstract

The invention relates to the technical field of building construction, in particular to an ultrasonic-based concrete filled steel tube construction quality nondestructive testing device which comprises a fixing frame, a self-walking mechanism, a movable assembly, a transducer, an elastic cover, a collector and the like. The fixing frame is provided with a self-walking mechanism used for driving the fixing frame to move. A movable assembly is arranged on the fixed frame; the movable assembly is connected with a plurality of transducers for transmitting and receiving ultrasonic waves; an elastic cover for uniformly diffusing a coupling agent is arranged on the detection surface of each transducer; the movable assembly is connected with a plurality of collectors for cleaning a coupling agent adhered to the transducer; and all the collectors are jointly combined into a circular ring shape. According to the invention, the shoveling part on the scraping block is used for shoveling the concrete block adhered to the outer side of the concrete filled steel tube, so that the adhered concrete block is prevented from blocking the attaching effect of the transducer and the outer side of the concrete filled steel tube, and the subsequent detection precision is prevented from being influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to a non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves. Background Art

[0002] During the construction of concrete-filled steel tubes, using an ultrasonic non-destructive testing device to evaluate the internal quality of the final structure is an important step to ensure the safety and durability of buildings. This device can effectively detect defects, damages or non-uniformities in concrete-filled steel tubes by transmitting and receiving ultrasonic signals without causing any damage to the structure. However, in the actual construction scenario of concrete-filled steel tubes, during the pouring of concrete, concrete and other impurities may splash on the outer side of the steel tube, causing its surface to become uneven. The existing ultrasonic non-destructive testing devices lack effective means to clean these impurities attached to the outer wall. When attempting to apply a coupling agent to two ultrasonic transducers and then attach them to the outer side of the concrete-filled steel tube and make them face each other at 180 degrees, the uneven surface makes it impossible for the transducers to accurately fit against the outer wall of the steel tube, thus affecting the detection accuracy.

[0003] In addition, the current mode of manually holding ultrasonic transducers for detection work also has deficiencies. After the construction of concrete-filled steel tubes is completed, in order to ensure the detection accuracy, technicians need to manually draw calibration lines in the monitoring area of the concrete-filled steel tubes first. This process is not only cumbersome and time-consuming, increasing the workload and labor cost of the detection operation, but also due to the influence of human factors, the drawn calibration lines may have deviations, further affecting the accuracy of subsequent detections. Summary of the Invention

[0004] In order to overcome the shortcomings that the existing ultrasonic non-destructive testing device cannot clean the impurities on the outer side of the concrete-filled steel tube, resulting in the ultrasonic transducers not being able to accurately fit against the outer wall of the steel tube, affecting the detection accuracy of the concrete-filled steel tube, and at the same time, manually drawing calibration lines is cumbersome and time-consuming, increasing the cost of the detection work, the present invention provides a non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves.

[0005] The technical solution is as follows: A non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves, including a fixing frame; there are two fixing frames, which are detachably connected between the two fixing frames, and the two fixing frames together form a circular ring; it also includes a self-propelled mechanism, a movable component, a transducer, an elastic cover, a collector, a cleaning component and a feeding component; a self-propelled mechanism for driving the movement of the fixing frame is arranged on the fixing frame; a movable component is arranged on the fixing frame; several transducers for transmitting and receiving ultrasonic waves are connected to the movable component; an elastic cover for uniformly diffusing the coupling agent is arranged on the detection surface of each transducer; several collectors for cleaning the coupling agent adhered to the transducer are connected to the movable component; all collectors are combined into a circular ring together; a scraping part is arranged on each collector; a cleaning component for cleaning the impurities adhered to the outside of the concrete-filled steel tube is connected to the movable component; a feeding component for supplementing the coupling agent is connected to the cleaning component.

[0006] Preferably, the self-propelled mechanism includes a support rod, an electric roller and a first telescopic driving member; several support rods are rotatably connected to each fixing frame; an electric roller for driving the movement of the fixing frame is rotatably connected to each support rod; several first telescopic driving members are rotatably connected to each fixing frame; the telescopic end of each first telescopic driving member is rotatably connected to the corresponding support rod.

[0007] Preferably, the movable component includes an arc-shaped slide rail, an electric slider, a fixing block, a second telescopic driving member and a third telescopic driving member; an arc-shaped slide rail is fixedly connected to each fixing frame; all arc-shaped slide rails are combined into a circular ring together; an electric slider is slidably connected to each arc-shaped slide rail; a fixing block is fixedly connected to each electric slider; a second telescopic driving member is fixedly connected to each fixing block; the telescopic end of each second telescopic driving member is fixedly connected to the transducer; several third telescopic driving members are rotatably connected to each fixing frame; the telescopic end of each third telescopic driving member is fixedly connected to the corresponding collector.

[0008] Preferably, the cleaning component includes a fourth telescopic driving member and a scraping block; a fourth telescopic driving member is fixedly connected to each fixing block; a scraping block for cleaning the impurities adhered to the outside of the concrete-filled steel tube is fixedly connected to the telescopic end of each fourth telescopic driving member; several shoveling parts are arranged on each scraping block.

[0009] Preferably, it also includes metal bristles; several metal bristles for enhancing the cleaning effect on the concrete-filled steel tube are arranged on each scraping block.

[0010] Preferably, the blanking assembly includes a fixing ring, a storage tank, and a transfer pipe; a fixing ring for protecting the transducer is fixedly connected to each fixing block; an annular material conveying cavity is provided inside each fixing ring; a plurality of discharge holes are provided on the inner ring surface of each fixing ring; each discharge hole communicates with the corresponding annular material conveying cavity; the end surface of each fixing ring is provided with a curved arc surface that fits the outer arc surface of the collector; a storage tank for storing the coupling agent is fixedly connected to each fixing ring; an air inlet is provided on the upper side of each storage tank; each air inlet communicates with an external air pump; a pressing plate is slidably connected inside each storage tank; a feeding port for supplementing the coupling agent is provided on each storage tank; a blocking valve is provided inside each feeding port; a plurality of transfer pipes are fixedly connected and communicated with each storage tank; each transfer pipe communicates with the corresponding annular material conveying cavity.

[0011] Preferably, the two transfer pipes on each storage tank are respectively communicated with the upper side positions of the two quarter points in the horizontal direction of the fixing ring.

[0012] Preferably, the scraping part is made of an elastic material.

[0013] Preferably, a protective cover is further included; two movable grooves are provided on each fixing frame; the movable grooves on the two fixing frames communicate with each other; a protective cover for blocking impurity particles is slidably connected together in the two movable grooves on each fixing frame; the protective cover is fixedly connected to the electric slider.

[0014] Preferably, balls are further included; a plurality of balls for reducing friction are rotatably connected to each protective cover; each ball rolls in the corresponding movable groove.

[0015] Beneficial effects: The present invention realizes removing the concrete blocks adhered to the outer side of the concrete-filled steel tube through the shoveling part on the scraping block, preventing the adhered concrete blocks from blocking the fitting effect between the transducer and the outer side of the concrete-filled steel tube, and avoiding affecting the subsequent detection accuracy; Driving the metal bristles by the scraping block to fit and rotate on the outer side of the concrete-filled steel tube, grinding and cleaning the concrete residues adhered to the outer side of the concrete-filled steel tube, and preventing the remaining small amount of concrete residues from affecting the subsequent detection accuracy; Blocking and limiting the coupling agent on the detection surface of the transducer through the elastic cover, so that the coupling agent is evenly distributed between the detection surface of the transducer and the outer side of the concrete-filled steel tube, which is beneficial to making the propagation of ultrasonic waves between the transducer and the concrete-filled steel tube more stable and improving the detection signal quality; Masking the transducer through the fixing ring and the collector, preventing the impurity particles cleaned from the concrete-filled steel tube from adhering to the detection surface of the transducer, and avoiding affecting the detection accuracy of the transducer. Description of the Drawings

[0016] Figure 1Schematic diagram of the three - dimensional structure of the first perspective of the present invention; Figure 2 Schematic diagram of the three - dimensional structure of the second perspective of the present invention; Figure 3 Schematic diagram of the combined three - dimensional structure of the movable component, cleaning component, transducer, collector, blanking component and protective cover of the present invention; Figure 4 Schematic diagram of the combined three - dimensional structure of the movable component, cleaning component, transducer, elastic cover, collector and blanking component of the present invention; Figure 5 Schematic diagram of the combined three - dimensional structure of the transducer, elastic cover and blanking component of the present invention; Figure 6 Schematic diagram of the combined three - dimensional structure of the transducer, elastic cover and fixing ring of the present invention; Figure 7 Schematic diagram of the cleaning working state of the cleaning component of the present invention; Figure 8 Schematic diagram of the detection working state of the transducer and the elastic cover of the present invention.

[0017] Explanation of reference numerals: 1 - fixing frame, 1001 - movable slot, 2 - transducer, 3 - elastic cover, 4 - collector, 4001 - scraping part, 101 - support rod, 102 - electric roller, 103 - first telescopic driving member, 201 - arc - shaped slide rail, 202 - electric slide block, 203 - fixing block, 204 - second telescopic driving member, 205 - third telescopic driving member, 301 - fourth telescopic driving member, 302 - scraping block, 30201 - shoveling part, 303 - metal brush bristles, 401 - fixing ring, 40101 - discharge hole, 40102 - annular feeding cavity, 402 - storage tank, 40201 - air inlet, 40202 - pressing plate, 40203 - feeding port, 403 - transmission pipe, 501 - protective cover, 502 - ball. Detailed implementation manners

[0018] The present invention will be further described below with reference to the embodiments shown in the drawings.

[0019] Embodiment 1: As Figures 1-8 shown, a non - destructive testing device for the construction quality of concrete - filled steel tubes based on ultrasonic waves includes a fixing frame 1; there are two fixing frames 1, which are detachably connected between the two fixing frames 1, and the two fixing frames 1 together form a circular ring; It also includes a self - walking mechanism, a movable component, a transducer 2, an elastic cover 3, a collector 4, a cleaning component and a blanking component; a self - walking mechanism is arranged on the fixing frame 1; a movable component is arranged on the fixing frame 1; several transducers 2 are connected to the movable component; an elastic cover 3 is arranged on the detection surface of each transducer 2; several collectors 4 are connected to the movable component; all the collectors 4 are combined into a circular ring; a scraping part 4001 is arranged on each collector 4; a cleaning component is connected to the movable component; a blanking component is connected to the cleaning component.

[0020] The self - walking mechanism includes a support rod 101, an electric roller 102 and a first telescopic driving part 103; two support rods 101 distributed vertically are rotatably connected to each fixing frame 1; an electric roller 102 is rotatably connected to each support rod 101; two first telescopic driving parts 103 distributed vertically are rotatably connected to each fixing frame 1, and the first telescopic driving part 103 is an electric push rod; the telescopic end of each first telescopic driving part 103 is rotatably connected to the corresponding support rod 101.

[0021] The movable component includes an arc - shaped slide rail 201, an electric slider 202, a fixed block 203, a second telescopic driving part 204 and a third telescopic driving part 205; an arc - shaped slide rail 201 is fixedly connected to each fixing frame 1; all the arc - shaped slide rails 201 are combined into a circular ring; an electric slider 202 is slidably connected to each arc - shaped slide rail 201; a fixed block 203 is fixedly connected to each electric slider 202; a second telescopic driving part 204 is fixedly connected to each fixed block 203, and the second telescopic driving part 204 is an electric push rod; the telescopic end of each second telescopic driving part 204 is fixedly connected to the transducer 2; two symmetrically arranged third telescopic driving parts 205 are rotatably connected to each fixing frame 1, and the third telescopic driving part 205 is an electric push rod; the telescopic end of each third telescopic driving part 205 is fixedly connected to the corresponding collector 4.

[0022] The cleaning component includes a fourth telescopic driving part 301 and a scraping block 302; a fourth telescopic driving part 301 is fixedly connected to each fixed block 203, and the fourth telescopic driving part 301 is an electric push rod; a scraping block 302 is fixedly connected to the telescopic end of each fourth telescopic driving part 301; two symmetrically arranged shoveling parts 30201 are arranged on each scraping block 302.

[0023] It also includes metal bristles 303; several metal bristles 303 are arranged on each scraping block 302.

[0024] The blanking assembly includes a fixing ring 401, a storage tank 402 and a transmission pipe 403; a fixing ring 401 is fixedly connected to each fixing block 203; an annular material conveying cavity 40102 is formed inside each fixing ring 401; a plurality of discharge holes 40101 are formed on the inner ring surface of each fixing ring 401; each discharge hole 40101 communicates with the corresponding annular material conveying cavity 40102; the end surface of each fixing ring 401 is arranged as a bending arc surface that fits the outer arc surface of the collector 4; a storage tank 402 is fixedly connected to each fixing ring 401; an air inlet 40201 is arranged on the upper side of each storage tank 402; each air inlet 40201 is communicated with an external air pump; a pressing plate 40202 is slidably connected inside each storage tank 402; a feeding port 40203 is arranged on each storage tank 402; a blocking valve is arranged inside each feeding port 40203; two transmission pipes 403 are fixedly connected and communicated with each storage tank 402; each transmission pipe 403 communicates with the corresponding annular material conveying cavity 40102.

[0025] The two transmission pipes 403 on each storage tank 402 are respectively communicated with the upper side positions of the two quarter points in the horizontal direction of the fixing ring 401. When blanking, the coupling agent in the horizontal direction inside the fixing ring 401 is more than that in other positions inside the fixing ring 401, which is beneficial to subsequent fully filling the gap between the detection surface of the transducer 2 and the outer arc surface of the steel pipe with the coupling agent, and enhancing the coupling effect between the detection surface of the transducer 2 and the outside of the steel pipe.

[0026] The scraping part 4001 is made of an elastic material, which is beneficial to making the scraping part 4001 fully fit the transducer 2, enhancing the scraping effect of the scraping part 4001 on the coupling agent on the transducer 2, and at the same time reducing the friction between the scraping part 4001 and the detection surface of the transducer 2, and enhancing the protection effect on the transducer 2.

[0027] When performing ultrasonic non-destructive testing on concrete-filled steel tubes, two fixing frames 1 are combined and sleeved outside the columnar concrete-filled steel tubes, so that the two arc-shaped slide rails 201 are butted into a circular ring. Subsequently, the telescopic ends of the two first telescopic driving members 103 on the upper side are controlled to contract, driving the two support rods 101 on the upper side to rotate towards the center of the two fixing frames 1, so that the support rods 101 drive the electric rollers 102 to fit and press against the outside of the concrete-filled steel tubes. The fixing frames 1 are fixed to the outside of the concrete-filled steel tubes through the frictional force between the electric rollers 102 and the outside of the concrete-filled steel tubes. At the same time, the telescopic ends of the two first telescopic driving members 103 on the lower side are controlled to contract, driving the two support rods 101 on the lower side to rotate towards the center of the two fixing frames 1, so that the support rods 101 drive the electric rollers 102 to fit and press against the outside of the concrete-filled steel tubes, providing stable support for the lower side of the fixing frames 1 and preventing the fixing frames 1 from tilting and shifting on the outside of the concrete-filled steel tubes. After the fixing frames 1 are fixed, the fourth telescopic driving member 301 is controlled to drive the scraping block 302 to move towards the concrete-filled steel tubes, so that the metal bristles 303 and the shoveling part 30201 on the scraping block 302 are in contact with the outside of the concrete-filled steel tubes. Subsequently, the electric slider 202 is controlled to drive the fixing block 203 and the fourth telescopic driving member 301 to slide on the two arc-shaped slide rails 201, so that the fourth telescopic driving member 301 drives the shoveling part 30201 on the scraping block 302 to rotate along the outside of the concrete-filled steel tubes. The concrete blocks adhered to the outside of the concrete-filled steel tubes are removed by the shoveling part 30201 on the scraping block 302, preventing the adhered concrete blocks from blocking the fitting effect between the transducer 2 and the outside of the concrete-filled steel tubes and avoiding affecting the subsequent detection accuracy. It is also considered that since the concrete blocks are adhered tightly, a small amount of residue is likely to remain after being removed. Therefore, after the scraping block 302 drives the shoveling part 30201 to remove the concrete blocks, the scraping block 302 drives the metal bristles 303 to fit and rotate along the outside of the concrete-filled steel tubes to polish and clean the concrete residues adhered to the outside of the concrete-filled steel tubes, preventing the remaining small amount of concrete residues from affecting the subsequent detection accuracy.

[0028] When the scraping block 302 drives the shoveling part 30201 and the metal bristles 303 to clean the outside of the concrete-filled steel tubes, the electric rollers 102 closely attached to the outside of the concrete-filled steel tubes are controlled to rotate, so that the electric rollers 102 drive the support rods 101 and the fixing frames 1 to gradually rise. Furthermore, the scraping block 302 rises together with the fixing frames 1 to comprehensively clean the area to be detected on the outside of the concrete-filled steel tubes. During the cleaning process, the second telescopic driving member 204 is controlled to drive the transducer 2 to move into the fixing ring 401, and the third telescopic driving member 205 is controlled to drive the collector 4 to descend to the same height as the fixing ring 401, so that the outside of the collector 4 fits with the arc-shaped surface on the side of the fixing ring 401 facing the concrete-filled steel tubes. The transducer 2 is shielded by the fixing ring 401 and the collector 4 to prevent the impurity particles cleaned from the concrete-filled steel tubes from adhering to the detection surface of the transducer 2 and avoiding affecting the detection accuracy of the transducer 2.

[0029] When the area to be detected outside the steel tube concrete is cleaned, the two electric sliders 202 are controlled to drive a fixed block 203 on the corresponding arc slide rail 201 to be 180 degrees opposite to each other, so that the two transducers 2 are 180 degrees opposite to each other with the steel tube concrete separated, and then the external air pump is controlled to inject gas from the air inlet 40201 to the upper part of the inner side of the storage tank 402, and the pressure plate 40202 is pressed downward in the storage tank 402 by air pressure, so that the coupling agent in the storage tank 402 is squeezed and transported to the annular delivery cavity 40102 through the transmission pipe 403. , so that the coupling agent is squeezed out from the discharge hole 40101, and at the same time, the telescopic driving member 3 205 is controlled to drive the collector 4 to rise, and the collector 4 removes the shielding of the transducer 2, and then the telescopic end of the telescopic driving member 204 is controlled to extend, driving the transducer 2 to pass through the fixing ring 401 and move toward the steel tube concrete. When the transducer 2 passes through the fixing ring 401, it drives the elastic cover 3 to move toward the steel tube concrete together, so that the elastic cover 3 moves in contact with the inner ring surface of the fixing ring 401, and the coupling agent squeezed out from the discharge hole 40101 is scraped off onto the detection surface of the transducer 2, completing the detection of the transducer 2. When applying the coupling agent to the detection surface, it should be noted that the outer side of the columnar steel tube concrete is an arc surface. As the telescopic drive member 204 drives the transducer 2 and the elastic cover 3 to continue to move toward the steel tube concrete, the upper and lower parts of the elastic cover 3 first contact the outer side of the steel tube concrete, and then the upper and lower parts of the elastic cover 3 are deformed due to the contact and extrusion with the steel tube concrete, so that the four points of the elastic cover 3 in the horizontal direction contact the outer side of the steel tube concrete, and then the elastic cover 3 is completely covered on the outer side of the steel tube concrete. As the transducer 2 continues to fit toward the outer side of the steel tube concrete, the transducer is located 2, the coupling agent on the detection surface of the transducer 2 is attached to the outer side of the steel tube concrete. At this time, the coupling agent on the detection surface of the transducer 2 is blocked and limited by the elastic cover 3, so that the coupling agent on the edge of the transducer 2 is squeezed to the middle of the detection surface of the transducer 2, and then the coupling agent is evenly distributed between the detection surface of the transducer 2 and the outer side of the steel tube concrete, which is conducive to making the propagation of ultrasonic waves between the transducer 2 and the steel tube concrete more stable, improving the quality of the detection signal, and at the same time, preventing the detection surface of the transducer 2 from directly contacting the steel tube concrete due to lack of coupling agent, avoiding the detection surface of the transducer 2 from being worn.

[0030] It is also considered that since the outer side of the concrete-filled steel tube is an arc surface, the gap between the detection surface of the transducer 2 and the outer arc surface of the concrete-filled steel tube gradually increases from the middle of the transducer 2 to the edge of the transducer 2 in the horizontal direction, resulting in an increased demand for the coupling agent between the quarter points of the transducer 2 in the horizontal direction and the concrete-filled steel tube. Therefore, in the present invention, the two transmission tubes 403 are respectively communicated with the upper sides of the two quarter points in the horizontal direction of the fixing ring 401, so that the coupling agent in the discharge holes 40101 near the two quarter points in the horizontal direction in the fixing ring 401 is more than that in other positions inside the fixing ring 401 during feeding. This is beneficial for the elastic cover 3 to scrape off the coupling agent and accumulate it at the quarter points in the horizontal direction of the detection surface of the transducer 2, fully filling the coupling agent in the gap between the detection surface of the transducer 2 and the outer arc surface of the steel tube, and enhancing the coupling effect between the detection surface of the transducer 2 and the outer side of the steel tube.

[0031] After the transducer 2 is attached to the concrete-filled steel tube, one of the transducers 2 is controlled by an external ultrasonic detector to emit ultrasonic waves, so that the ultrasonic waves pass through the inside of the concrete-filled steel tube and are received by the other transducer 2. Subsequently, the transducer 2 converts the received ultrasonic waves into electrical signals and transmits them back to the ultrasonic detector, thereby completing a detection of the concrete-filled steel tube. After the transducer 2 has completed one detection, the telescopic driving member two 204 is controlled to drive the transducer 2 and the elastic cover 3 to contract and separate from the concrete-filled steel tube, so that the transducer 2 and the elastic cover 3 move into the fixing ring 401. Subsequently, the telescopic driving member three 205 is controlled to drive the collector 4 to descend to a height lower than that of the transducer 2. At this time, the telescopic driving member two 204 is controlled to drive the transducer 2 and the elastic cover 3 to move towards the collector 4, so that the lower part of the elastic cover 3 fits onto the scraping part 4001 of the collector 4. Subsequently, the telescopic driving member three 205 is controlled to drive the collector 4 to rise, so that the scraping part 4001 fits and rises along with the detection surfaces of the elastic cover 3 and the transducer 2, and the coupling agent adhered to the elastic cover 3 and the detection surface of the transducer 2 is scraped off by the scraping part 4001, preventing the coupling agent from adhering to the transducer 2 mixed with particulate impurities and avoiding affecting the subsequent ultrasonic detection of the concrete-filled steel tube. After the coupling agent on the detection surfaces of the elastic cover 3 and the transducer 2 is scraped off, the telescopic driving member two 204 is controlled to drive the transducer 2 and the elastic cover 3 to contract into the fixing ring 401, and the transducer 2 and the elastic cover 3 are coated with the coupling agent again to prepare for the next detection work.

[0032] In summary, compared with the existing method of manually holding the transducer 2 to detect concrete-filled steel tubes, the present invention drives the device to lift on the outside of the concrete-filled steel tube through the electric roller 102. It can not only detect concrete-filled steel tubes with different diameters, but also detect any height position, enhancing the adaptability of the device. By mechanically controlling the transducer 2 to fit with the outside of the concrete-filled steel tube for detection, it not only eliminates the need for manual pre-drawing of calibration lines before detection, but also eliminates the need for manual calibration of the transducer 2, preventing the deviation of the transducer 2 from fitting with the arc surface of the concrete-filled steel tube, ensuring the coupling effect between the transducer 2 and the concrete-filled steel tube. Through the cooperation of the storage tank 402 and the fixed ring 401, the automatic application and feeding of the coupling agent can be realized. At the same time, the collector 4 cleans the coupling agent on the detection surface of the transducer 2, eliminating the need for manual application and cleaning of the coupling agent on the transducer 2, realizing the automation of the entire detection process, reducing labor costs, and improving the accuracy of detection values.

[0033] Embodiment 2: On the basis of Embodiment 1, as Figures 1-4 shown, it further includes a protective cover 501; two vertically symmetric movable grooves 1001 are opened on each fixing frame 1; the movable grooves 1001 on the two fixing frames 1 communicate with each other; a protective cover 501 is slidably connected in common in the two movable grooves 1001 on each fixing frame 1; the protective cover 501 is fixedly connected to the electric slider 202.

[0034] It further includes balls 502; a plurality of vertically symmetric balls 502 are rotatably connected to each protective cover 501; each ball 502 rolls in the corresponding movable groove 1001.

[0035] It is also considered that when the scraping block 302 and the metal bristles 303 clean the outside of the concrete-filled steel tube, the concrete particle impurities cleaned off are prone to generate dust and adhere to the arc-shaped slide rail 201, resulting in an increase in the friction force when the electric slider 202 slides on the arc-shaped slide rail 201, exacerbating the wear between the electric slider 202 and the arc-shaped slide rail 201. Therefore, in the present invention, by providing a protective cover 501 on the fixing frame 1, when the electric slider 202 drives the scraping block 302 and the metal bristles 303 to clean the outside of the concrete-filled steel tube, the electric slider 202 drives the protective cover 501 to slide in the movable groove 1001 together. The arc-shaped slide rail 201 is shielded by the protective cover 501 to prevent the concrete particle impurities cleaned off from adhering to the arc-shaped slide rail 201, avoiding the aggravation of the wear between the electric slider 202 and the arc-shaped slide rail 201, enhancing the protection effect on the device, and extending the service life of the device.

[0036] When the protective cover 501 slides in the movable groove 1001, the friction between the protective cover 501 and the fixed frame 1 during sliding is reduced by the balls 502, preventing mutual wear between the protective cover 501 and the fixed frame 1, and enhancing the protection effect on the device.

[0037] Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art from this disclosure that various changes or modifications can be made to the present invention without departing from the principle and spirit scope defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only used to explain, rather than to limit the present invention, and the scope of protection is defined by the content of the claims.

Claims

1. A non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves, comprising a fixing frame (1); there are two fixing frames (1), which are detachably connected between the two fixing frames (1), and the two fixing frames (1) together form a circular ring; characterized in that: It also includes a self-propelled mechanism, a movable component, a transducer (2), an elastic cover (3), a collector (4), a cleaning component, and a blanking component; a self-propelled mechanism for driving the movement of the fixing frame (1) is arranged on the fixing frame (1); a movable component is arranged on the fixing frame (1); a plurality of transducers (2) for transmitting and receiving ultrasonic waves are connected to the movable component; an elastic cover (3) for uniformly diffusing the coupling agent is arranged on the detection surface of each transducer (2); a plurality of collectors (4) for cleaning the coupling agent adhered to the transducer (2) are connected to the movable component; all the collectors (4) are combined into a circular ring; a scraping part (4001) is arranged on each collector (4); a cleaning component for cleaning the impurities adhered to the outer side of the concrete-filled steel tube is connected to the movable component; a blanking component for supplementing the coupling agent is connected to the cleaning component.

2. The non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves according to claim 1, wherein: The self-propelled mechanism includes a support rod (101), an electric roller (102), and a first telescopic driving member (103); a plurality of support rods (101) are rotatably connected to each fixing frame (1); an electric roller (102) for driving the movement of the fixing frame (1) is rotatably connected to each support rod (101); a plurality of first telescopic driving members (103) are rotatably connected to each fixing frame (1); the telescopic end of each first telescopic driving member (103) is rotatably connected to the corresponding support rod (101).

3. The non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves according to claim 2, characterized in that: The movable component includes an arc-shaped slide rail (201), an electric slider (202), a fixing block (203), a second telescopic driving member (204), and a third telescopic driving member (205); an arc-shaped slide rail (201) is fixedly connected to each fixing frame (1); all the arc-shaped slide rails (201) are combined into a circular ring; an electric slider (202) is slidably connected to each arc-shaped slide rail (201); a fixing block (203) is fixedly connected to each electric slider (202); a second telescopic driving member (204) is fixedly connected to each fixing block (203); the telescopic end of each second telescopic driving member (204) is fixedly connected to the transducer (2); a plurality of third telescopic driving members (205) are rotatably connected to each fixing frame (1); the telescopic end of each third telescopic driving member (205) is fixedly connected to the corresponding collector (4).

4. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 3, characterized in that: The cleaning component includes a fourth telescopic driving member (301) and a scraping block (302); a fourth telescopic driving member (301) is fixedly connected to each fixing block (203); a scraping block (302) for cleaning the impurities adhered to the outer side of the concrete-filled steel tube is fixedly connected to the telescopic end of each fourth telescopic driving member (301); a plurality of shoveling parts (30201) are arranged on each scraping block (302).

5. The non-destructive testing device for the construction quality of concrete-filled steel tubes based on ultrasonic waves according to claim 4, wherein: It also includes metal bristles (303); a plurality of metal bristles (303) for enhancing the cleaning effect on the concrete-filled steel tube are arranged on each scraping block (302).

6. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 4, characterized in that: The blanking assembly includes a fixing ring (401), a storage tank (402), and a transmission pipe (403); a fixing ring (401) for protecting the transducer (2) is fixedly connected to each fixing block (203); an annular material conveying cavity (40102) is provided inside each fixing ring (401); a plurality of discharge holes (40101) are provided on the inner ring surface of each fixing ring (401); each discharge hole (40101) communicates with the corresponding annular material conveying cavity (40102); the end face of each fixing ring (401) is arranged as a curved arc surface that fits the outer arc surface of the collector (4); a storage tank (402) for storing the coupling agent is fixedly connected to each fixing ring (401); an air inlet (40201) is provided on the upper side of each storage tank (402); each air inlet (40201) is communicated with an external air pump; a pressing plate (40202) is slidably connected inside each storage tank (402); a feed port (40203) for supplementing the coupling agent is provided on each storage tank (402); a blocking valve is provided inside each feed port (40203); a plurality of transmission pipes (403) are fixedly connected and communicated to each storage tank (402); each transmission pipe (403) communicates with the corresponding annular material conveying cavity (40102).

7. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 6, characterized in that: The two transmission pipes (403) on each storage tank (402) are respectively communicated with the positions above the two quarter points in the horizontal direction of the fixing ring (401).

8. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 1, characterized in that: The scraping part (4001) is made of an elastic material.

9. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 3, characterized in that: It further includes a protective cover (501); two movable grooves (1001) are provided on each fixing frame (1); the movable grooves (1001) on the two fixing frames (1) communicate with each other; a protective cover (501) for blocking impurity particles is slidably connected in the two movable grooves (1001) on each fixing frame (1); the protective cover (501) is fixedly connected to the electric slider (202).

10. An ultrasonic-based non-destructive testing device for the construction quality of concrete-filled steel tubes according to claim 9, characterized in that: It further includes balls (502); a plurality of balls (502) for reducing friction are rotatably connected to each protective cover (501); each ball (502) rolls in the corresponding movable groove (1001).

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