Handheld Steel Plate Flaw Detection Device

Abstract

The present invention relates to the technical field of steel plate flaw detection, and particularly to a handheld steel plate flaw detection device, which includes: a positioning structure for cooperating with the edge of the steel plate to be tested and traveling along the steel plate edge. The positioning structure includes a wheel frame, on which a positioning wheel set for forming a clamping structure for the steel plate is provided, and an adjusting structure for adjusting the traveling path of the flaw detection component is also connected to the wheel frame; a flaw detection component, including a flaw detection frame, on which a number of ultrasonic detectors are arranged at intervals in rows and columns; a gap is reserved between the ultrasonic detector and the surface to be detected, and a liquid supply device is provided on the flaw detection frame for injecting a liquid medium into the gap; a handheld structure, including an operating rod connected to the positioning structure, and a controller electrically connected to the flaw detection component is arranged on the operating rod. The present invention drives the flaw detection component to move on the steel plate through the positioning device, performs flaw detection according to an accurate traveling path, avoids the situation of repeated paths and pathless areas on the surface to be flaw detected, and improves the accuracy and reliability of ultrasonic flaw detection.

Description

Technical Field

[0001] The present invention relates to the technical field of steel plate flaw detection, mainly involving the metal flaw detection treatment at the flange and web of H-shaped steel, and specifically relates to a handheld steel plate flaw detection device. Background Art

[0002] In the processing and production of steel, the internal structure of steel is mostly detected by ultrasonic flaw detection and other methods to facilitate the discovery of damage existing in the internal structure of steel. Existing ultrasonic flaw detection equipment is generally handheld, and it is necessary to manually hold it to gradually detect the surface to be detected. For steel plates with a large area, if the current handheld equipment is used for gradual detection, it will take a lot of time and cause great fatigue to the operator. And currently, the detection path of the detection surface is manually controlled, resulting in situations such as repeated detection and missed detection, and there are phenomena of incomplete and inaccurate detection results, making the reliability of the detection results of steel products insufficient.

[0003] It can be seen that there is still room for improvement in the current ultrasonic flaw detection of steel plates, and it is necessary to optimize to improve the accuracy of flaw detection operations, control the accurate and reliable detection path, reduce the situations of missed detection and repeated detection, and at the same time improve the detection efficiency and reduce the labor intensity of the operator, so as to ensure the reliability of the flaw detection results while simplifying the flaw detection process. Therefore, a more reasonable technical solution needs to be proposed to solve the technical problems existing in the prior art. Summary of the Invention

[0004] To at least overcome one of the above-mentioned defects, the present invention proposes a handheld steel plate flaw detection device, aiming to keep a stable detection distance between the flaw detection device and the surface to be flaw detected through a positioning structure, and reduce the impurities on the detection surface to improve the accuracy of ultrasonic flaw detection; at the same time, accurately adjust the flaw detection path to avoid the situations of repeated paths and no paths on the surface to be flaw detected, and improve the reliability of ultrasonic flaw detection.

[0005] To achieve the above object, the flaw detection device disclosed by the present invention can adopt the following technical solutions:

[0006] A handheld steel plate flaw detection device, comprising:

[0007] A positioning structure for cooperating with the edge of the steel plate to be measured and traveling along the edge of the steel plate. The positioning structure includes a wheel frame, on which a positioning wheel group forming a clamping structure for the steel plate is provided, and an adjusting structure for adjusting the traveling path of the flaw detection component is also connected to the wheel frame;

[0008] A flaw detection component, including a flaw detection frame connected to the adjusting structure. A number of ultrasonic detectors are arranged at intervals in rows and columns on the flaw detection frame. The ultrasonic detectors in adjacent rows are arranged in a staggered manner so that the detection areas of the ultrasonic detectors in adjacent rows intersect; a gap is reserved between the ultrasonic detector and the surface to be detected, and a liquid supply device is provided on the flaw detection frame and used to inject a liquid medium into the gap;

[0009] A handheld structure, including an operating rod connected to a positioning structure, and a controller electrically connected to a flaw detection component is provided on the operating rod.

[0010] The above-disclosed flaw detection device can perform flaw detection on vertically placed steel plates, H-beams, channel steels, etc. Among them, by cooperating with the vertical edge of the steel plate through the positioning structure, the flaw detection component is attached to the vertical surface or horizontal surface of the steel plate. When the positioning structure travels along the edge of the steel plate, the flaw detection component can perform continuous flaw detection operations. The handheld structure is used to apply a force to the positioning structure to push it along the edge of the steel plate; when the flaw detection is completed along a straight path, the flaw detection component is switched to another flaw detection component through an adjustment structure, and the flaw detection operation is repeated to achieve continuous flaw detection. Finally, the surface to be detected can be completely detected, realizing the flaw detection operation of the steel plate.

[0011] Furthermore, when detecting a vertically arranged steel plate, it is necessary to consider the different thicknesses of the steel plate and make a match. When detecting the web of an H-beam and a channel steel, it is necessary to consider the distance between the flange plates for cooperation. In the present invention, the wheel frame is used to install the positioning wheel set and keep traveling along the edge of the steel plate through the positioning wheel set. The wheel frame can be constructed in various forms and is not uniquely limited. For example, in some solutions, a wheel frame with a three-pronged structure is adopted, and in some solutions, a T-shaped wheel frame can be adopted; an optimization is carried out here and one feasible option is proposed: the wheel frame includes a main wheel frame fixedly connected to the adjustment structure, and also includes a coded wheel frame movably cooperating with the adjustment structure. The coded wheel frame is adjustable in position on the adjustment structure and moves closer to or away from the main wheel frame; the positioning wheel set includes a backing wheel set fixed on the main wheel frame and cooperating with the edge of the steel plate, and also includes a coded wheel set that moves with the coded wheel frame and cooperates with the edge of the steel plate. When adopting such a solution, at least two backing wheels are provided on the main wheel frame and are attached to the edge of the steel plate to tightly press against one side of the steel plate; two corresponding coded wheels are provided on the coded wheel frame. If the backing wheel and the coded wheel travel along the same edge of the steel plate, the coded wheel and the backing wheel respectively tightly press against both sides of the steel plate. If the backing wheel and the coded wheel respectively travel along the two flange plates of an H-beam or a channel steel, the backing wheel tightly presses against one flange plate, while the coded wheel tightly presses against the other flange plate and presses against it to maintain stability.

[0012] Furthermore, the coded wheel set can achieve the effect of tightly pressing against the steel plate through a moving adjustment method. In the present invention, the backing wheel cannot move along the adjustment structure. In order to improve the stability of the connection and cooperation between the backing wheel set and the steel plate, an optimization is carried out here and one feasible option is proposed: an elastic pressing structure is provided on the main wheel frame, and the elastic pressing structure is used to apply an elastic force to the backing wheel set and tightly press against the steel plate. When adopting such a solution, the elastic pressing structure can be arranged at the wheel shaft of the backing wheel, so that the backing wheel slides axially along the wheel shaft, thereby tightly pressing the backing wheel against the steel plate.

[0013] Further, the adjusting structure is used to connect the flaw detection component and make the flaw detection component fit the surface to be detected, so as to ensure the reliability of the detection effect. A variety of structures can be used as the adjusting structure, and the specific structure is not uniquely limited. Here, one feasible solution is optimized and proposed: the adjusting structure includes an adjusting part connected and cooperated with the wheel frame, and a connecting part is slidably arranged on the adjusting part. The flaw detection frame is connected and fixed to the connecting part and moves relative to the adjusting part along with the connecting part. When such a solution is adopted, the connecting part and the adjusting part move relative to each other and drive the flaw detection frame to move, so as to change the flaw detection path. Usually, during the traveling process, the adjusting part and the connecting part remain relatively fixed, so that a stable flaw detection path is maintained during the traveling of the positioning structure; when a flaw detection path is completed, the connecting part moves to a new flaw detection path, and after maintaining relative fixation again, it travels along the new flaw detection path, so as to maintain the accurate detection of the flaw detection surface and avoid the situation of repeated detection or missed detection.

[0014] Further, the operating rod in the present invention cooperates with the positioning structure, which is convenient for driving the positioning structure to travel through the operating rod; the cooperation structure between the positioning structure and the operating rod is not uniquely limited. In order to facilitate the holding operation of the operating rod in multiple directions, one feasible option is optimized and proposed here: a number of adjusting positions for setting the rod seat are arranged on the adjusting part, and the rod seat is used to connect the operating rod and enable the operating rod to rotate and adjust in the horizontal direction and pitch and adjust in the vertical direction. When such a solution is adopted, the adjusting position can be an adjusting hole or an adjusting groove and other structures; when the adjusting part adopts a long strip-shaped rod, the connecting part can slide along the rod, and the two adjusting positions can also be arranged at intervals along the rod, which is convenient for the connecting part to move and adjust the position on the adjusting part.

[0015] Further, the connecting part and the adjusting part are arranged to slide relative to each other, and are relatively fixed at an appropriate position after adjustment for subsequent flaw detection operations. A variety of ways can be used to realize the relative fixation of the connecting part and the adjusting part, and the specific way is not uniquely limited. One feasible option is optimized and proposed here: a locking structure is arranged on the connecting part, and the locking structure is used to apply a locking force to lock and fix the connecting part and the adjusting part. When such a solution is adopted, the locking structure can adopt a screw locking structure, a pin fixing structure, an elastic clamping structure, a clamping structure, a sleeve tightening structure, etc.

[0016] Furthermore, the flaw detection frame is used to install and fix the ultrasonic detector. The distance between the flaw detection frame and the surface to be detected is extremely small. During the process, impurities on the surface to be detected may damage the ultrasonic detector or the flaw detection frame. To avoid damage affecting ultrasonic flaw detection, optimization is performed here and one of the feasible options is proposed: the flaw detection frame is connected to a wear-resistant part, and the wear-resistant part is provided with a mounting hole for accommodating the ultrasonic detector, and a protective shell is provided in the mounting hole to protect the ultrasonic detector; the wear-resistant part is provided with a filtering structure to allow the liquid medium injected by the liquid supply device to pass through and enter the gap. When such a solution is adopted, the wear-resistant part matches the structure of the flaw detection frame, and the wear-resistant part covers the end face of the flaw detection frame. When some impurities rub against it, the wear-resistant part is worn. Subsequently, only the wear-resistant part needs to be replaced separately, which can reduce the maintenance cost of the device. When the wear-resistant part is provided, the end face of the wear-resistant part is higher than the end face of the ultrasonic detector, thereby preventing the ultrasonic detector from being worn.

[0017] Furthermore, in order to maintain the stability of the gap and make the width of the gap uniform, the present invention is optimized and provides one feasible option: the flaw detection frame is provided with running wheels, which roll on the surface to be detected, thereby maintaining the gap width between the surface to be detected and the flaw detection frame.

[0018] To further enhance the protection of the NDT stand, an optimization and feasible option is proposed: the NDT stand is also equipped with a cleaning mechanism, comprising flushing devices located in front and behind the NDT stand, as well as a suction device located in front of the NDT stand. In this solution, the flushing devices in front and behind the NDT stand flush impurities on the inspection surface with a cleaning fluid, reducing the amount of impurities that enter the gap and thus preventing damage. Meanwhile, the suction device includes a structure that uses magnetic attraction to remove iron filings, such as a magnetic sheet.

[0019] Furthermore, to facilitate adjustment of the controller's placement angle when setting up the controller, an optimization and feasible option is proposed: the operating lever is provided with an adjustment bracket for accommodating the controller. The adjustment bracket includes a base connected to the operating lever, a transverse rotation bracket connected to the base, a longitudinal rotation bracket connected to the transverse rotation bracket, and the controller is mounted on the longitudinal rotation bracket. When this solution is adopted, the transverse rotation bracket and the longitudinal rotation bracket jointly achieve adjustment of the controller's placement angle.

[0020] Furthermore, when making circuit connections, the present invention is optimized and proposes the following feasible option: an adapter is further provided on the operating rod, and the adapter is used to connect the controller and the flaw detection component.

[0021] Compared with the prior art, some of the beneficial effects of the technical solution disclosed in the present invention include:

[0022] The present invention drives the flaw detection component to move on the steel plate through a positioning device, and performs flaw detection along an accurate traveling path, avoiding the situation of repeated paths and pathless areas on the surface to be flaw detected, and improving the accuracy and reliability of ultrasonic flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure and a partially enlarged schematic diagram of the flaw detection device in Embodiment 1.

[0025] Figure 2 It is a schematic diagram of the flaw detection device cooperating with an H-shaped steel for detection and a partially enlarged schematic diagram in Embodiment 1.

[0026] Figure 3 It is a schematic diagram of the overall structure of the flaw detection device cooperating with an H-shaped steel for detection in Embodiment 1.

[0027] Figure 4 It is a schematic diagram of the positioning structure of the flaw detection device in Embodiment 1.

[0028] Figure 5 It is a schematic diagram of the overall structure of the flaw detection component of the flaw detection device in Embodiment 1.

[0029] Figure 6 It is a front view structure schematic diagram of the flaw detection component of the flaw detection device in Embodiment 1.

[0030] Figure 7 It is a bottom view structure schematic diagram of the flaw detection component of the flaw detection device in Embodiment 1.

[0031] Figure 8 It is a schematic diagram of a handheld structure.

[0032] Figure 9 It is a schematic diagram of an adjusting frame.

[0033] Figure 10 It is a schematic diagram of the overall structure of the flaw detection device in Embodiment 2.

[0034] Figure 11 It is a schematic diagram of the flaw detection device cooperating with an H-shaped steel for detection and a partially enlarged schematic diagram in Embodiment 2.

[0035] Figure 12 It is a schematic diagram of the overall structure of the flaw detection device cooperating with an H-shaped steel for detection in Embodiment 2.

[0036] Figure 13 It is a schematic diagram of the positioning structure of the flaw detector in Embodiment 2.

[0037] In the above-mentioned drawings, the meanings of each label are as follows:

[0038] 1. Operating rod; 2. Controller; 3. Adjusting frame; 301. Base body; 302. Transverse rotating frame; 303. Longitudinal rotating frame; 4. Adapter; 5. Rod base; 6. Adjusting part; 601. Adjusting position; 7. Main wheel frame; 8. Support wheel group; 9. Coding wheel frame; 10. Coding wheel group; 11. Connecting part; 12. Flaw detection frame; 13. Flushing device; 14. Wear-resistant part; 15. Connecting plate; 16. Adsorption device; 17. Liquid supply device; 18. Ultrasonic detector; 19. Traveling wheel; 20. Filtration structure; 21. Locking structure; 22. Gap; 23. Steel plate; 24. Elastic pressing structure. Specific embodiments

[0039] The present invention will be further explained below with reference to the drawings and specific embodiments.

[0040] In view of the fact that the current ultrasonic flaw detection equipment is operated by hand, which causes a great degree of fatigue and is not conducive to ensuring the accuracy and reliability of the ultrasonic detection results, the following embodiments are optimized to overcome the defects in the prior art.

[0041] Embodiment 1

[0042] As Figure 1 , Figure 2 shown, this embodiment provides a handheld steel plate flaw detector, which is mainly used for flaw detection of the vertical steel plate, the flange and web of H-beam and channel steel.

[0043] As one of the structures of the flaw detector provided in this embodiment, it includes:

[0044] A positioning structure, as Figure 4 shown, is used to cooperate with the edge of the steel plate 23 to be measured and travel along the edge of the steel plate 23. The positioning structure includes a wheel frame, on which a positioning wheel group forming a clamping structure for the steel plate 23 is arranged, and an adjusting structure for adjusting the travel path of the flaw detection component is also connected to the wheel frame.

[0045] Preferably, in this embodiment, taking the H-beam as an example, it travels along the flange of the H-beam through the positioning structure. The positioning structure is fitted at the upper edge of the flange of the H-beam and travels along the flange while detecting the side surface of the flange.

[0046] Preferably, when performing the detection, different thicknesses of the steel plate 23 need to be considered and coordinated. In this embodiment, the wheel frame is used to install and position the wheel set and keep moving along the edge of the steel plate 23 through the wheel set. The wheel frame can be constructed in various forms and is not uniquely limited. For example, in some solutions, a wheel frame with a trident structure is adopted, and in some solutions, a T-shaped wheel frame can be adopted; this embodiment is optimized and one feasible option is adopted: as Figure 4 shown, the wheel frame includes a main wheel frame 7 fixedly connected to the adjustment structure, and further includes a coded wheel frame 9 movably matched with the adjustment structure. The coded wheel frame 9 is adjustable in position on the adjustment structure and moves closer to or away from the main wheel frame 7; the wheel set includes a backing wheel set 8 fixed on the main wheel frame 7 and matched with the edge of the steel plate 23, and further includes a coded wheel set 10 that moves with the coded wheel frame 9 and is matched with the edge of the steel plate 23. When such a solution is adopted, at least two backing wheels are provided on the main wheel frame 7 and are attached to the edge of the steel plate 23 to tightly hold one side of the steel plate 23; two coded wheels are correspondingly provided on the coded wheel frame 9, and the coded wheels and the backing wheels respectively tightly hold both sides of the steel plate 23.

[0047] Preferably, in this embodiment, the main wheel frame 7 is fixedly installed on the adjustment structure, and a backing wheel is provided at each end of the main wheel frame 7. The wheel surface of the backing wheel is in rolling cooperation with the edge of the steel plate 23, and a wheel rim is provided at the side surface of the backing wheel and is attached to the side surface of the steel plate 23. At the same time, the coded wheel frame 9 and the adjustment structure are adjusted and moved through an adjustment groove, so that the distance between the coded wheel and the backing wheel can be adjusted to facilitate adapting to steel plates 23 of different thicknesses.

[0048] The adjustment structure is used to connect the flaw detection component and make the flaw detection component fit the surface to be detected to ensure the reliability of the detection effect. Various structures can be used as the adjustment structure, and it is not uniquely limited specifically. This embodiment is optimized and one feasible solution is adopted: the adjustment structure includes an adjustment part 6 connected and matched with the wheel frame. A connecting part 11 is slidably arranged on the adjustment part 6. The flaw detection frame 12 is fixedly connected to the connecting part 11 and moves relative to the adjustment part 6 along with the connecting part 11. When such a solution is adopted, the connecting part 11 and the adjustment part 6 move relative to each other and drive the flaw detection frame 12 to move, thereby realizing the change of the flaw detection path. Usually, during the traveling process, the adjustment part 6 and the connecting part 11 remain relatively fixed, so a stable flaw detection path is maintained during the traveling of the positioning structure; when a flaw detection path is detected, the connecting part 11 moves to a new flaw detection path and then remains relatively fixed and travels along the new flaw detection path, so as to maintain the accurate detection of the flaw detection surface and avoid the situation of repeated detection or missed detection.

[0049] Preferably, in this embodiment, as Figure 4As shown, the adjusting part 6 includes a horizontally arranged support rod or support plate, and the connecting part 11 includes a vertically arranged connecting rod or connecting plate; the connecting part 11 and the adjusting part 6 are slidably matched through a longitudinal chute structure.

[0050] The connecting part 11 and the adjusting part 6 are arranged to slide relative to each other, and are relatively fixed at an appropriate position after adjustment for subsequent flaw detection operations. There are various ways to relatively fix the connecting part 11 and the adjusting part 6, and the specific method is not uniquely limited. In this embodiment, one feasible option is optimized and adopted: such as Figure 2 、 Figure 3 As shown, a locking structure 21 is provided on the connecting part 11, and the locking structure 21 is used to apply a locking force to lock and fix the connecting part 11 and the adjusting part 6. When adopting such a solution, the structure of the locking structure 21 can adopt a screw locking structure, or a pin fixing structure, or an elastic clamping structure, a clamping structure, a sleeve tightening structure, etc.

[0051] [[ID={10}]]As the flaw detection device provided in this embodiment, its second structure includes:

[0052] A flaw detection assembly, as Figure 5 、 Figure 6 and Figure 7 shown, includes a flaw detection frame 12 connected to the adjustment structure. A number of ultrasonic detectors 18 are arranged at intervals in rows and columns on the flaw detection frame 12. The adjacent two rows of ultrasonic detectors 18 are arranged in a staggered manner so that the detection areas of the adjacent two rows of ultrasonic detectors 18 cross; a gap 22 is reserved between the ultrasonic detector 18 and the surface to be detected, and a liquid supply device 17 is provided on the flaw detection frame 12 and is used to inject a liquid medium into the gap 22.

[0053] Preferably, as Figure 4 、 Figure 5 shown, a connecting plate 15 is further provided between the flaw detection assembly and the positioning structure, which is used to connect and fix the flaw detection assembly and the positioning assembly, and at the same time, the width of the gap 22 between the flaw detection frame 12 and the surface to be detected can be adjusted.

[0054] The flaw detection frame 12 is used to install and fix the ultrasonic detection element. The distance between the flaw detection frame 12 and the surface to be detected is extremely small, and there may be a situation where impurities on the surface to be detected damage the ultrasonic detector 18 or the flaw detection frame 12 during the traveling process. To avoid damage and affect ultrasonic flaw detection, one feasible option is optimized and adopted in this embodiment: such as Figures 4 - 5As shown, the flaw detection frame 12 is connected with a wear-resistant part 14. An installation hole for accommodating the ultrasonic detector 18 is provided on the wear-resistant part 14, and a protective shell for protecting the ultrasonic detector 18 is arranged in the installation hole. A filtering structure 20 is arranged on the wear-resistant part 14 so that the liquid medium injected by the liquid supply device 17 can enter the gap 22 after passing through. When adopting such a scheme, the structures of the wear-resistant part 14 and the flaw detection frame 12 correspond and match. The wear-resistant part 14 covers the end face of the flaw detection frame 12. When partial impurities rub, the wear-resistant part 14 is worn. Subsequently, only the wear-resistant part 14 needs to be replaced separately, which can reduce the maintenance cost of the device. When setting the wear-resistant part 14, the end face of the wear-resistant part 14 is higher than the end face of the ultrasonic detector 18, thereby avoiding the ultrasonic detector 18 from being worn.

[0055] Preferably, all liquid supply devices 17 include liquid supply pipes. A plurality of liquid inlets are arranged on the flaw detection frame 12. The liquid supply pipes convey the liquid medium to the liquid inlets. The liquid medium entering the liquid inlets can fill the gap 22 and form a uniform transmission medium layer, ensuring the stability of ultrasonic transmission and avoiding situations that affect the transmission of the liquid medium in the gap 22. At the same time, water can be used as the liquid medium.

[0056] In order to maintain the stability of the gap 22 and make the width of the gap 22 uniform, this embodiment is optimized and one of the feasible options is adopted: as Figures 4 - 5 shown, traveling wheels 19 are arranged on the flaw detection frame 12. The traveling wheels 19 roll on the surface to be detected, thereby maintaining the width of the gap 22 between the surface to be detected and the flaw detection frame 12.

[0057] Preferably, the number of traveling wheels 19 is four, and they are arranged in two rows and two columns at the edge of the flaw detection frame 12.

[0058] In order to further improve the protection of the flaw detection frame 12, this embodiment is optimized and one of the feasible options is adopted: as Figures 4 - 5 shown, a cleaning structure is further arranged on the flaw detection frame 12. The cleaning structure includes flushing devices 13 arranged in front of and behind the advancing direction of the flaw detection frame 12, and also includes an adsorption device 16 arranged in front of the advancing direction of the flaw detection frame 12. When adopting such a scheme, the flushing devices 13 in front of and behind the flaw detection frame 12 use cleaning liquid for flushing to clean the impurities on the surface to be detected, reducing the impurities entering the gap 22, thereby avoiding damage. At the same time, the adsorption device 16 includes a structure that uses the magnetic attraction principle to remove iron filings, such as magnetic adsorption sheets, etc.

[0059] As the flaw detection device provided in this embodiment, the third structure thereof includes:

[0060] A handheld structure, such as Figure 8 、 Figure 9As shown in the figure, it includes a joystick 1 connected to a positioning structure, and a controller 2 electrically connected to the flaw detection component is arranged on the joystick 1.

[0061] In this embodiment, the joystick 1 cooperates with the positioning structure to facilitate driving the positioning structure to move forward through the joystick 1; the cooperation structure between the positioning structure and the joystick 1 is not uniquely limited. In order to facilitate the holding operation of the joystick 1 in multiple directions, an optimization is made here and one feasible option is adopted: a number of adjustment positions 601 for setting the rod seat 5 are arranged on the adjustment part 6, and the rod seat 5 is used to connect the joystick 1 and enable the joystick 1 to rotate and adjust in the horizontal direction and pitch and adjust in the vertical direction. When such a scheme is adopted, the adjustment position 601 can be an adjustment hole or an adjustment groove and other structures; when the adjustment part 6 adopts a long bar-shaped member, the connecting part 11 can slide along the member, and the two adjustment positions 601 can also be arranged at intervals along the member to facilitate the movement and position adjustment of the connecting part 11 on the adjustment part 6.

[0062] When setting the controller 2, in order to facilitate adjusting the placement angle of the controller 2, an optimization is made in this embodiment and one feasible option is adopted: as Figure 9 shown, an adjustment frame 3 for accommodating the controller 2 is arranged on the joystick 1. The adjustment frame 3 includes a seat body 301 connected to the joystick 1, a transverse rotation frame 302 is connected to the seat body 301, and a longitudinal rotation frame 303 is connected to the transverse rotation frame 302. The controller 2 is arranged on the longitudinal rotation frame 303. When such a scheme is adopted, the transverse rotation frame 302 and the longitudinal rotation frame 303 jointly realize the adjustment of the placement angle of the controller 2.

[0063] When making circuit connections, an optimization is made in this embodiment and one feasible option is adopted as follows: as Figure 8 shown, an adapter 4 is also arranged on the joystick 1. The adapter 4 is used to connect the controller 2 and the flaw detection component.

[0064] The flaw detection device disclosed above can perform flaw detection on vertically placed steel plates 23, H-beams, channel steels, etc. Among them, the positioning structure cooperates with the vertical edge of the steel plate 23 to make the flaw detection component fit the vertical surface or the horizontal surface of the steel plate 23. When the positioning structure moves along the edge of the steel plate 23, the flaw detection component can perform continuous flaw detection operations. The handheld structure is used to apply a force to the positioning structure to push it to move along the edge of the steel plate 23; when the flaw detection is completed along a straight path, the flaw detection component is switched to another flaw detection component through the adjustment structure, and the flaw detection operation is repeated to achieve continuous flaw detection. Finally, the surface to be detected can be completely detected to realize the flaw detection operation of the steel plate 23.

[0065] Embodiment 2

[0066] As Figures 10 - 12As shown in the figure, this embodiment provides a handheld steel plate flaw detection device, which is mainly used for flaw detection of the vertical steel plates, the flanges and webs of H-beams and channel steels.

[0067] The difference from Embodiment 1 is that this embodiment is mounted on two upright flanges and travels along the flanges for flaw detection of the horizontal surface to be detected.

[0068] Specifically, as the flaw detection device provided in this embodiment, one of its structures includes:

[0069] A positioning structure, such as Figure 13 shown, which is used to cooperate with the edge of the steel plate 23 to be detected and travel along the edge of the steel plate 23. The positioning structure includes a wheel frame, on which a positioning wheel group for forming a clamping structure for the steel plate 23 is provided, and an adjusting structure for adjusting the traveling path of the flaw detection assembly is also connected to the wheel frame.

[0070] Preferably, in this embodiment, taking the H-beam as an example, it travels along the two flanges of the H-beam through the positioning structure. The positioning structure is fitted at the upper edge of the flange of the H-beam and travels along the flange, while flaw detecting the surface of the web.

[0071] Preferably, when flaw detecting the web in cooperation with the H-beam and the channel steel, the distance between the flanges needs to be considered for cooperation. In this embodiment, the wheel frame is used to install the positioning wheel group and keep traveling along the edge of the steel plate 23 through the positioning wheel group. The wheel frame can be constructed in various forms and is not uniquely limited. For example, in some solutions, a wheel frame with a trident structure is adopted, and in some solutions, a T-shaped wheel frame can be adopted; this embodiment is optimized and one of the feasible options is adopted: as Figure 10 shown, the wheel frame includes a main wheel frame 7 fixedly connected to the adjusting structure, and also includes a coded wheel frame 9 movably cooperating with the adjusting structure. The coded wheel frame 9 is adjustable in position on the adjusting structure and moves closer to or away from the main wheel frame 7; the positioning wheel group includes a backing wheel group 8 fixed to the main wheel frame 7 and cooperating with the edge of the steel plate 23, and also includes a coded wheel group 10 that moves with the coded wheel frame 9 and cooperates with the edge of the steel plate 23. When adopting such a solution, at least two backing wheels are provided on the main wheel frame 7 and are attached to the edge of the steel plate 23 to tighten one side of the steel plate 23; the backing wheels and the coded wheels travel along the two side flanges of the H-beam or the channel steel respectively, so that the backing wheels tighten one side flange, while the coded wheels tighten the other side flange and press tightly to maintain stability.

[0072] The coding wheel set 10 can achieve the effect of being close to the steel plate 23 by means of movable adjustment. In this embodiment, the supporting wheels cannot move along the adjustment structure. In order to improve the stability of the connection and cooperation between the supporting wheel set 8 and the steel plate 23, this embodiment is optimized and one feasible option is adopted: an elastic pressing structure 24 is provided on the main wheel frame 7, and the elastic pressing structure 24 is used to apply an elastic force to the supporting wheel set 8 and press against the steel plate 23. When such a solution is adopted, the elastic pressing structure 24 can be arranged at the wheel axle of the supporting wheel, so that the supporting wheel slides axially along the wheel axle, thereby pressing the supporting wheel tightly against the steel plate 23.

[0073] Preferably, the elastic pressing structure 24 includes a spring.

[0074] Preferably, in this embodiment, as Figure 10 , Figure 13 shown, the main wheel frame 7 is fixedly mounted on the adjustment structure, and a supporting wheel is respectively arranged at both ends of the main wheel frame 7. The wheel surface of the supporting wheel is in rolling cooperation with the edge of the steel plate 23, and a wheel rim is arranged at the side surface of the supporting wheel and fits against the side surface of the steel plate 23. At the same time, the coding wheel frame 9 is adjusted and moved along the adjustment structure, so that the distance between the coding wheel and the supporting wheel can be adjusted, which is convenient for adapting to wing plates with different spacings.

[0075] The adjustment structure is used to connect the flaw detection component and make the flaw detection component fit against the surface to be detected to ensure the reliability of the detection effect. A variety of structures can be used as the adjustment structure, and the specific one is not uniquely limited. This embodiment is optimized and one feasible solution is adopted: as Figure 10 , Figure 13 shown, the adjustment structure includes an adjustment part 6 connected and cooperated with the wheel frame. A connecting part 11 is slidably arranged on the adjustment part 6, and the flaw detection frame 12 is connected and fixed to the connecting part 11 and moves relative to the adjustment part 6 along with the connecting part 11. When such a solution is adopted, the connecting part 11 moves relative to the adjustment part 6 and drives the flaw detection frame 12 to move, thereby changing the flaw detection path. Usually, during the traveling process, the adjustment part 6 and the connecting part 11 remain relatively fixed, so that a stable flaw detection path is maintained during the traveling of the positioning structure; when a flaw detection path is completed, the connecting part 11 moves to a new flaw detection path, and after remaining relatively fixed again, it travels along the new flaw detection path, thereby ensuring the accurate detection of the flaw detection surface and avoiding the situation of repeated detection or missed detection.

[0076] Preferably, in this embodiment, as Figure 10 , Figure 13 shown, the adjustment part 6 includes several horizontally arranged adjustment rods or adjustment plates, and the connecting part 11 includes a slidably arranged connecting rod or connecting plate; the connecting part 11 slides along the adjustment part 6 and drives the flaw detection component to switch the flaw detection path.

[0077] The connecting part 11 is arranged to slide relative to the adjusting part 6, and after being adjusted to a suitable position, they are relatively fixed to facilitate subsequent flaw detection operations. There are various ways to relatively fix the connecting part 11 and the adjusting part 6, and the specific method is not uniquely limited. In this embodiment, an optimization is carried out and one feasible option is adopted: a locking structure 21 is arranged on the connecting part 11, and the locking structure 21 is used to apply a locking force to lock and fix the connecting part 11 and the adjusting part 6. When adopting such a scheme, the structure of the locking structure 21 can adopt a screw locking structure, a pin fixing structure, an elastic clamping structure, a clamping structure, a sleeve tightening structure, etc.

[0078] As the flaw detection device provided in this embodiment, the flaw detection component and the handheld structure in its structure adopt the same scheme as in Embodiment 1, and will not be elaborated here. However, in this embodiment, the detection direction of the flaw detection component is changed from the vertical direction to the horizontal direction, and it travels along the detection path on the surface of the web to achieve the purpose of flaw detection.

[0079] The above are the implementation manners listed in this embodiment. However, this embodiment is not limited to the above optional implementation manners. Those skilled in the art can obtain many other implementation manners by arbitrarily combining the above manners. Anyone can obtain other various forms of implementation manners under the inspiration of this embodiment. The above specific implementation manners should not be understood as limiting the protection scope of this embodiment, and the protection scope of this embodiment should be defined by the claims.

Claims

1. Handheld steel plate flaw detection device, characterized in that, Comprising: A positioning structure for cooperating with the edge of the steel plate (23) to be measured and traveling along the edge of the steel plate (23). The positioning structure includes a wheel frame, on which a positioning wheel set for forming a clamping structure for the steel plate (23) is provided. An adjusting structure for adjusting the traveling path of the flaw detection assembly is also connected to the wheel frame; A flaw detection assembly, including a flaw detection frame (12) connected to the adjusting structure. A number of ultrasonic detectors (18) are arranged at intervals in rows and columns on the flaw detection frame (12). The adjacent two rows of ultrasonic detectors (18) are arranged in a staggered manner so that the detection areas of the adjacent two rows of ultrasonic detectors (18) intersect. A gap (22) is reserved between the ultrasonic detector (18) and the surface to be detected. A liquid supply device (17) is provided on the flaw detection frame (12) and is used to inject a liquid medium into the gap (22); A handheld structure, including an operating rod (1) connected to the positioning structure. A controller (2) electrically connected to the flaw detection assembly is provided on the operating rod (1); The wheel frame includes a main wheel frame (7) fixedly connected to the adjusting structure, and also includes a coding wheel frame (9) movably cooperating with the adjusting structure. The coding wheel frame (9) is adjustable in position on the adjusting structure and moves closer to or away from the main wheel frame (7). The positioning wheel set includes a backing wheel set (8) fixed to the main wheel frame (7) and cooperating with the edge of the steel plate (23), and also includes a coding wheel set (10) moving with the coding wheel frame (9) and cooperating with the edge of the steel plate (23); An elastic pressing structure (24) is provided on the main wheel frame (7). The elastic pressing structure (24) is used to apply an elastic force to the backing wheel set (8) and press against the steel plate (23).

2. The hand-held steel plate flaw detection device according to claim 1, wherein: The adjusting structure includes an adjusting part (6) connected and cooperating with the wheel frame. A connecting part (11) is slidably arranged on the adjusting part (6). The flaw detection frame (12) is connected and fixed to the connecting part (11) and moves relative to the adjusting part (6) along with the connecting part (11).

3. The hand-held steel plate flaw detection device according to claim 2, characterized in that: A number of adjusting positions (601) for setting the rod seat (5) are provided on the adjusting part (6). The rod seat (5) is used to connect the operating rod (1) and enable the operating rod (1) to be rotationally adjusted in the horizontal direction and pitch-adjusted in the vertical direction.

4. The handheld steel plate flaw detection device according to claim 2, characterized in that: A locking structure (21) is provided on the connecting part (11). The locking structure (21) is used to apply a locking force to lock and fix the connecting part (11) and the adjusting part (6).

5. The hand-held steel plate flaw detection device according to claim 1, characterized in that: The flaw detection frame (12) is connected with a wear-resistant part (14). Mounting holes for accommodating the ultrasonic detectors (18) are provided on the wear-resistant part (14), and protective shells for protecting the ultrasonic detectors (18) are provided in the mounting holes. A filtering structure (20) is provided on the wear-resistant part (14) to enable the liquid medium injected by the liquid supply device (17) to enter the gap (22) after passing through; 6. The hand-held steel plate flaw detection device according to claim 1 or 5, characterized in that: A cleaning structure is also provided on the flaw detection frame (12). The cleaning structure includes flushing devices (13) arranged in front of and behind the traveling direction of the flaw detection frame (12), and also includes an adsorption device (16) arranged in front of the traveling direction of the flaw detection frame (12).

7. The hand-held steel plate flaw detection device according to claim 1, characterized in that: An adjusting frame (3) for accommodating a controller (2) is provided on the operating rod (1). The adjusting frame (3) includes a seat body (301) connected to the operating rod (1), a laterally rotating frame (302) is connected to the seat body (301), and a longitudinally rotating frame (303) is connected to the laterally rotating frame (302). The controller (2) is disposed on the longitudinally rotating frame (303).

8. The hand-held steel plate flaw detection device according to claim 1, wherein: An adapter (4) is further provided on the operating rod (1). The adapter (4) is used to connect the controller (2) and the flaw detection assembly.

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