Scanning device for ultrasonic direct flaw detection of steel plate

Abstract

The utility model relates to a scanning device for ultrasonic direct flaw detection of a steel plate, which belongs to the technical field of detection and comprises a translation driving mechanism, a lifting mechanism, an operating mechanism and a probe mechanism, the bottom end of the lifting mechanism is arranged on the translation driving mechanism, the operating mechanism is arranged at the telescopic end of the lifting mechanism, and the probe mechanism is arranged on one side of the operating mechanism; the operating mechanism comprises a sliding sleeve and an extending operating rod, the extending operating rod is sleeved with the sliding sleeve, the bottom end of the sliding sleeve is arranged at the telescopic end of the lifting mechanism, one end of the extending operating rod is provided with a probe mechanism, and the other end of the extending operating rod is provided with a balance weight block; the probe mechanism comprises a probe front end seat, a probe clamping seat and an ultrasonic probe, the probe front end seat is of a circular ring structure, the lower end of the probe front end seat is connected with the probe clamping seat through a hollow connecting rod, a rubber clamping block is arranged in the probe clamping seat, and the ultrasonic probe is arranged in the rubber clamping block; the device is simple in structure, convenient to use and high in automation degree, effectively reduces the labor intensity, improves the stability and ensures the detection precision.

Description

A scanning device for ultrasonic direct flaw detection of steel plates Technical Field

[0001] This utility model relates to a scanning device, specifically a scanning device for ultrasonic direct flaw detection of steel plates, belonging to the field of detection technology. Background Technology

[0002] In the industrial manufacturing sector, a large quantity of steel plates is required to serve as raw materials for subsequent steel structures or rolled pipe pipelines. Therefore, the quality of these steel plates is of paramount importance and necessitates quality inspection. Ultrasonic direct testing is commonly used to inspect steel plates, employing a straight-line probe to scan the steel plate with ultrasonic waves. The current inspection method involves first drawing a grid of lines on the steel plate surface according to the inspection standards. The inspector then applies a paste or water-based ultrasonic coupling agent to the inspection area, and then, kneeling down, holds the ultrasonic straight-line probe and scans the steel plate surface according to the grid sequence.

[0003] Technical personnel engaged in steel plate inspection have found that the method of scanning the surface of steel plates with a handheld ultrasonic straight probe in a grid order is not only slow, but also prone to missing detections and cannot meet the coverage requirements.

[0004] Patent CN219957472U describes a scanning device for ultrasonic direct flaw detection of steel plates. The device is connected to the scanning body via a hinge, and the control lever can rotate around the scanning body at a certain angle, which can expand the scanning range of the device. Moreover, the operator can perform the scanning by holding the control lever, which reduces the need to bend over and squat, thus reducing the workload of the operator. However, the device needs to be constantly adjusted according to the angle, and the manual method still results in high labor intensity for the operator. The stability during the test is not enough, and the accuracy of the test results cannot be guaranteed.

[0005] Therefore, developing a scanning device for ultrasonic direct flaw detection of steel plates that can overcome the above defects has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a scanning device for ultrasonic direct flaw detection of steel plates. The device has a simple structure, is easy to use, has a high degree of automation, effectively reduces labor intensity, improves stability and ensures detection accuracy.

[0007] To solve the above technical problems, this utility model provides a scanning device for ultrasonic direct flaw detection of steel plates, including a translation drive mechanism, a lifting mechanism, an operating mechanism, and a probe mechanism. The bottom end of the lifting mechanism is set on the translation drive mechanism, the telescopic end of the lifting mechanism is provided with an operating mechanism, and a probe mechanism is provided on one side of the operating mechanism.

[0008] The operating mechanism includes a sliding sleeve and an extension operating rod. The sliding sleeve is fitted onto the extension operating rod, and the bottom end of the sliding sleeve is located at the telescopic end of the lifting mechanism. One end of the extension operating rod is equipped with a probe mechanism, and the other end is equipped with a counterweight to maintain the balance of the extension operating rod.

[0009] The probe mechanism includes a probe front seat, a probe clamp, and an ultrasonic probe. The probe front seat is a circular ring structure and is located on the side of the extension operating rod away from the counterweight. The lower end of the probe front seat is connected to a U-shaped probe clamp via a hollow connecting rod. A rubber clamp is provided inside the probe clamp, and the ultrasonic probe is placed inside the rubber clamp.

[0010] The ultrasonic probe moves horizontally on the steel plate under test under the drive of the translation mechanism, and moves vertically on the steel plate under the drive of the lifting mechanism, so as to perform flaw detection scanning on the steel plate.

[0011] The further defined technical solution of this utility model is:

[0012] Furthermore, in the aforementioned scanning device for ultrasonic direct flaw detection of steel plates, the translation drive mechanism includes a fixed end seat, a translation motor, a translation screw, a translation guide rail, a translation base, and a screw nut. The two fixed end seats are symmetrically arranged, and the translation screw and translation guide rail are provided between the two fixed end seats. The two translation guide rails are symmetrically arranged between the fixed end seats. The translation screw is located above the translation guide rail. One end of the translation screw passes through the corresponding fixed end seat and is fixedly connected to the output shaft of the translation motor. The other end is set on the corresponding fixed end seat through a bearing.

[0013] The upper end of the translation base is connected to the translation screw via a screw nut, the lower end of the translation base is slidably mounted on the translation guide rail, and the upper surface of the translation base is provided with a lifting mechanism.

[0014] The translation motor drives the translation screw to rotate on the fixed end seat, which in turn causes the translation base to slide on the translation guide rail.

[0015] In terms of technical effects, this utility model uses the cooperation of translation screw, translation base and translation guide rail to realize the horizontal movement of the probe on the steel plate. It has a high degree of automation, saves time and labor, does not require manual operation by operators, has good stability, and effectively improves detection accuracy. The fixed end seat method also makes it easy to place on the steel plate to be tested, and has good stability.

[0016] In the aforementioned scanning device for ultrasonic direct flaw detection of steel plates, the lifting mechanism is a spring telescopic support rod.

[0017] Technically, this utility model limits the length of the extension operating rod to be greater than the width of the steel plate to be tested, which is beneficial for completing all the tests on the steel plate and ensuring the normal completion of the work.

[0018] In the aforementioned scanning device for ultrasonic direct flaw detection of steel plates, a receiving channel is formed in the middle of the connecting rod, and the receiving channel is partially covered when the connecting rod is connected to the probe clamp.

[0019] Technical advantages: The connecting rod has a hollow structure that forms a channel, reducing mass and facilitating the extension of the operating rod to maintain balance. It also enables vertical and horizontal movement, reducing costs and making it easier for subsequent water supply pipes to pass through, thus making it convenient to use.

[0020] The aforementioned scanning device for ultrasonic direct flaw detection of steel plates also includes a water supply pipe and a water outlet nozzle. The water outlet nozzle is located at the bottom of the inner wall of the probe holder. The extended operating rod is also equipped with a water supply pipe. One end of the water supply pipe is connected to a water source, and the other end passes through the probe front end seat and connecting rod and is connected to the water outlet nozzle.

[0021] In terms of technical benefits, this utility model also includes a water supply pipe and a water nozzle. When applying coupling agent, the need for coupling agent (water) for flaw detection is met. The coupling agent can be applied while scanning, avoiding the situation where the scanning speed cannot keep up with the drying speed of the coupling agent when it is applied first.

[0022] In the aforementioned scanning device for ultrasonic direct flaw detection of steel plates, the length of the extended operating rod is greater than the width of the steel plate to be inspected.

[0023] In terms of technical effectiveness, the lifting mechanism of this utility model adopts a spring-loaded telescopic support rod, generally referring to a gas spring support rod. Its lifting force is generated by high-pressure gas pushing a piston rod, and the pushing force is determined by the pressure of the high-pressure gas. The amount of high-pressure gas dissolved in the liquid increases with gas compression (this process corresponds to the gas spring support rod working in the compression stage) and decreases with gas expansion (this process corresponds to the gas spring support rod working in the extension stage), enabling the probe to be adjusted vertically for higher flaw detection, thus offering strong applicability.

[0024] The beneficial effects of this utility model are:

[0025] This invention utilizes a translation base and a spring-loaded telescopic support rod. The spring-loaded telescopic support rod supports the sliding sleeve, and the extension operating rod inside the sliding sleeve can move back and forth under the user's operation. The total length of the extension operating rod is greater than the width of the steel plate to be tested. The movement of the extension operating rod within the sliding sleeve drives the ultrasonic probe to move back and forth on the steel plate. This, combined with the translation drive mechanism, drives the translation base to move, enabling the testing of all areas on the steel plate from one side of the conveying device platform. The testing personnel do not need to bend over or squat down, making the operation much easier.

[0026] This invention features a translation screw and screw nut. The translation screw rotates under the drive of a translation motor, thereby driving the translation base to move along the translation screw through the threaded engagement with the screw nut. Depending on the thickness of the steel plate, the detection range of the ultrasonic probe varies. The translation motor can adjust the distance the translation base moves with each start according to the detection range of the ultrasonic probe, ensuring that the gradual movement of the ultrasonic probe can cover the entire steel plate for detection, thus guaranteeing the detection effect.

[0027] This invention utilizes a translation guide rail to enable the translation base to move along the guide rail on one side of the steel plate conveyor line, thus maintaining the stability of the translation base during movement.

[0028] The probe mechanism of this utility model adopts a U-shaped probe holder to facilitate the placement of the ultrasonic probe. The ultrasonic probe is further stabilized and held by rubber clamps without damaging the ultrasonic probe. It is easy to use, and the ultrasonic probe is easy to install and remove.

[0029] The extension operating rod structure of this utility model is reasonable, which facilitates the installation of probes and water supply pipes. It is aesthetically pleasing and practical. In addition, the extension operating rod is equipped with a balance weight to help maintain the overall balance of the extension operating rod and maintain stability. Attached Figure Description

[0030] Figure 1 is a schematic diagram of the structure of the scanning device for ultrasonic direct flaw detection of steel plates according to an embodiment of the present invention;

[0031] Figure 2 is an enlarged structural diagram of part A in Figure 1;

[0032] In the diagram: 1-Translation base, 2-Spring telescopic support rod, 3-Sliding sleeve, 4-Extension operating rod, 5-Translation motor, 6-Translation lead screw, 7-Lead screw nut, 8-Probe front end seat, 9-Fixed end seat, 10-Translation guide rail, 11-Probe clamp, 12-Rubber clamp, 13-Ultrasonic probe, 14-Balancing weight, 15-Water outlet nozzle, 16-Water supply pipe. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them; the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Embodiment 1

[0034] This embodiment provides a scanning device for ultrasonic direct flaw detection of steel plates. The structure is shown in Figures 1-2. It includes a translation drive mechanism, a lifting mechanism 2, a spring telescopic support rod, an operating mechanism, and a probe mechanism. The bottom end of the spring telescopic support rod is set on the translation drive mechanism, and the telescopic end of the spring telescopic support rod is provided with an operating mechanism. A probe mechanism is provided on one side of the operating mechanism.

[0035] The translation drive mechanism includes a fixed end seat 9, a translation motor 5, a translation lead screw 6, a translation guide rail 10, a translation base 1, and a lead screw nut 7. The two fixed end seats 9 are symmetrically arranged, and the translation lead screw 6 and the translation guide rail 10 are provided between the two fixed end seats 9. The two translation guide rails 10 are symmetrically arranged between the fixed end seats 9. The translation lead screw 6 is located above the translation guide rail 10. One end of the translation lead screw 6 passes through the corresponding fixed end seat 9 and is fixedly connected to the output shaft of the translation motor 5. The other end is set on the corresponding fixed end seat 9 through a bearing. The bearing is sleeved and fixed at the corresponding fixed end seat insertion hole of the translation lead screw to facilitate the fixing and rotation of the translation lead screw.

[0036] The center of the upper end of the translation base 1 is connected to the translation screw 6 through the screw nut 7. The screw nut is threadedly connected to the translation screw. The lower end of the translation base 1 is slidably set on the translation guide rail 10. The upper surface of the translation base 1 is provided with a spring telescopic support rod.

[0037] The translation motor 5 drives the translation screw 6 to rotate on the fixed end seat 9, which in turn causes the translation base 1 to slide on the translation guide rail 10.

[0038] The operating mechanism includes a sliding sleeve 3 and an extension operating rod 4. The length of the extension operating rod 4 is greater than the width of the steel plate to be tested. The sliding sleeve 3 is fitted onto the extension operating rod 4. The extension end of the spring telescopic support rod is fixedly welded with the sliding sleeve 3. One end of the extension operating rod 4 is equipped with a probe mechanism, and the other end is equipped with a balance counterweight 14 to maintain the balance of the extension operating rod 4.

[0039] The probe mechanism includes a probe front seat 8, a probe clamp 11, and an ultrasonic probe 13. The probe front seat 8 is a ring structure and is located on the side of the extension operating rod 4 away from the balance weight 14. The lower end of the probe front seat 8 is connected to the probe clamp 11 through a hollow connecting rod. The probe clamp is a U-shaped structure with the opening facing one side. The middle part of the connecting rod forms a receiving channel. When the connecting rod is connected to the probe clamp 11, the receiving channel is partially covered. Rubber clamps 12 are fixedly connected to the middle of the inner walls on both sides of the U-shape, and the ultrasonic probe 13 is clamped and fixed between the rubber clamps 12 on both sides.

[0040] It also includes a water supply pipe 16 and a water outlet nozzle 15. The two water outlet nozzles 15 are located near the bottom of the inner wall of the probe holder 11. The extension operating rod 4 is also equipped with a water supply pipe 16. One end of the water supply pipe 16 is connected to a water source, and the other end passes through the probe front end seat 8 and the connecting rod and is connected to the water outlet nozzle 15.

[0041] The ultrasonic probe 13 moves horizontally on the steel plate under test under the drive of the translation drive mechanism, and moves vertically on the steel plate under the drive of the spring telescopic support rod, so as to perform flaw detection scanning on the steel plate.

[0042] This utility model relates to a scanning device for ultrasonic direct flaw detection of steel plates. The device has a simple structure, is easy to use, and has a high degree of automation. It effectively reduces labor intensity, improves stability, and ensures detection accuracy. The scanning device improves work efficiency and meets the requirements for handheld flaw detection coverage.

[0043] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A scanning device for ultrasonic direct flaw detection of steel plates, characterized in that: The device includes a translation drive mechanism, a lifting mechanism (2), an operating mechanism, and a probe mechanism. The bottom end of the lifting mechanism (2) is mounted on the translation drive mechanism. The operating mechanism is mounted on the telescopic end of the lifting mechanism (2), and the probe mechanism is mounted on one side of the operating mechanism. The operating mechanism includes a sliding sleeve (3) and an extension operating rod (4). The sliding sleeve (3) is mounted on the extension operating rod (4). The bottom end of the sliding sleeve (3) is mounted on the telescopic end of the lifting mechanism (2). The probe mechanism is mounted on one end of the extension operating rod (4), and a counterweight (14) is mounted on the other end to maintain the balance of the extension operating rod (4). The probe mechanism includes... The device includes a probe front end seat (8), a probe clamp seat (11), and an ultrasonic probe (13). The probe front end seat (8) is a circular ring structure and is located on the side of the extension operating rod (4) away from the balance weight (14). The lower end of the probe front end seat (8) is connected to a U-shaped probe clamp seat (11) through a hollow connecting rod. A rubber clamp (12) is provided inside the probe clamp seat (11), and the ultrasonic probe (13) is located inside the rubber clamp (12). The ultrasonic probe (13) moves horizontally on the steel plate to be tested under the drive of the translation drive mechanism and moves vertically on the steel plate to be tested under the drive of the lifting mechanism (2) to perform flaw detection scanning on the steel plate.

2. The scanning device for ultrasonic direct flaw detection of steel plates according to claim 1, characterized in that: The translation drive mechanism includes a fixed end seat (9), a translation motor (5), a translation lead screw (6), a translation guide rail (10), a translation base (1), and a lead screw nut (7). The two fixed end seats (9) are symmetrically arranged, and the translation lead screw (6) and the translation guide rail (10) are provided between the two fixed end seats (9). The two translation guide rails (10) are symmetrically arranged between the fixed end seats (9). The translation lead screw (6) is located above the translation guide rail (10), and one end of the translation lead screw (6) passes through the corresponding fixed end seat (9) and the translation guide rail (10). The output shaft of the translation motor (5) is fixedly connected, and the other end is set on the corresponding fixed end seat (9) through a bearing; the upper end of the translation base (1) is connected to the translation screw (6) through the screw nut (7), and the lower end of the translation base (1) is slidably set on the translation guide rail (10). The upper surface of the translation base (1) is provided with the lifting mechanism (2); the translation motor (5) drives the translation screw (6) to rotate on the fixed end seat (9), and drives the translation base (1) to slide on the translation guide rail (10).

3. The scanning device for ultrasonic direct flaw detection of steel plates according to claim 1, characterized in that: The lifting mechanism (2) is a spring telescopic support rod.

4. The scanning device for ultrasonic direct flaw detection of steel plates according to claim 1, characterized in that: The middle part of the connecting rod forms a receiving channel, which is partially covered when the connecting rod is connected to the probe holder (11).

5. The scanning device for ultrasonic direct flaw detection of steel plates according to claim 4, characterized in that: It also includes a water supply pipe (16) and a water outlet nozzle (15). The water outlet nozzle (15) is located at the bottom end of the inner wall of the probe holder (11). The water supply pipe (16) is also provided on the extension operating rod (4). One end of the water supply pipe (16) is connected to a water source, and the other end passes through the probe front end seat (8) and the connecting rod to connect with the water outlet nozzle (15).

6. The scanning device for ultrasonic direct flaw detection of steel plates according to claim 1, characterized in that: The length of the extension operating rod (4) is greater than the width of the steel plate to be tested.

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