A round billet ultrasonic testing mechanism

Abstract

The utility model discloses a kind of circular slab ultrasonic detection mechanisms, including length-adjustable telescopic link, the bottom of telescopic link is equipped with driving wheel (1) and support wheel (2), telescopic link includes first bar (3) and second bar (4), the bottom of first bar (3) outside end is equipped with first guide wheel (14), first bar (3) is connected ultrasonic probe (5) by translation mechanism (6), the outside end of second bar (4) is equipped with cross bar (7), the bottom of cross bar (7) both ends is equipped with second guide wheel (8), second bar (4) is equipped with water tank (9), water tank (9) is connected spray head (10) by water pump, spray head (10) is located in ultrasonic probe (5) side, spray head (10) connects translation mechanism (6).The utility model has the advantages of improving detection efficiency and reducing the rate of missed detection.

Description

Technical Field

[0001] This utility model belongs to the field of metal plate testing equipment, and particularly relates to an ultrasonic testing mechanism for a circular metal slab. Background Technology

[0002] In the metallurgical industry, the traditional method for non-destructive testing of round slabs, such as continuously cast slabs and rolled slabs, mainly relies on manual ultrasonic testing. This method has many drawbacks. On the one hand, the testing efficiency is low, with a single piece taking more than 30 minutes to test; on the other hand, the reliability of the test results is poor, as the coupling agent needs to be applied during testing, and it is easy to miss some during manual application, resulting in a high rate of missed detections.

[0003] To improve testing efficiency, mechanical testing equipment has emerged in recent years, enabling automated operations. However, these devices have also revealed several problems in practical applications. Their fixed ring-shaped frames are unsuitable for handling circular slabs of varying diameters. In the metallurgical industry, the diameter of circular slabs typically needs to cover a range of 4-6 meters. When testing slabs of different diameters, the equipment must be disassembled and reassembled, a process that takes over two hours, severely impacting testing efficiency.

[0004] Therefore, existing testing equipment has the drawback of requiring disassembly and reassembly to test circular slabs of different diameters, resulting in low testing efficiency and a high rate of missed detections. Utility Model Content

[0005] The purpose of this invention is to provide an ultrasonic testing mechanism for circular slabs. This invention has the advantages of improving testing efficiency and reducing the false negative rate.

[0006] The technical solution of this utility model is as follows: An ultrasonic testing mechanism for a circular slab includes an adjustable telescopic rod. The bottom of the telescopic rod is provided with a drive wheel and a support wheel. The telescopic rod includes a first rod and a second rod. The bottom of the outer end of the first rod is provided with a first guide wheel. The first rod is connected to an ultrasonic probe through a translation mechanism. The outer end of the second rod is provided with a crossbar. The bottom of both ends of the crossbar is provided with a second guide wheel. A water tank is provided on the second rod. The water tank is connected to a nozzle through a water pump. The nozzle is located on one side of the ultrasonic probe and is connected to the translation mechanism.

[0007] In the aforementioned ultrasonic testing mechanism for circular slabs, the drive wheel is located at the bottom of the second rod, and support wheels are provided at both ends of the first rod and both ends of the crossbar.

[0008] In the aforementioned ultrasonic testing mechanism for circular slabs, the translation mechanism is an electrically driven lead screw and guide rail module, and the ultrasonic probe and nozzle are both connected to the moving end of the translation mechanism.

[0009] In the aforementioned ultrasonic testing mechanism for circular slabs, both ends of the crossbar are connected to a second member via support rods.

[0010] In the aforementioned ultrasonic testing mechanism for circular slabs, an electrical control box is provided on the second rod, and the drive wheel, water pump, and translation mechanism are all connected to the electrical control box.

[0011] In the aforementioned ultrasonic testing mechanism for circular slabs, the water pump is connected to the nozzle via a hose.

[0012] Compared with existing technologies, this utility model features a telescopic rod with three guide wheels. By adjusting the length of the telescopic rod, the three guide wheels can be aligned with circular slabs of different diameters, ensuring that the telescopic rod can rotate coaxially with these slabs. Support wheels and drive wheels are installed at the bottom of the telescopic rod, which in turn rotates the ultrasonic probe on the rod. A translation mechanism on the telescopic rod drives the ultrasonic probe to move radially. This combination of movements allows the ultrasonic probe to move spirally inward or outward around the center of the circular slab, achieving comprehensive flaw detection. When inspecting circular slabs of different diameters, only the length of the telescopic rod needs to be adjusted, simplifying the process and reducing time consumption, thus improving inspection efficiency. A water tank is installed on the telescopic rod, connected to a nozzle via a water pump. Positioning the nozzle near the ultrasonic probe ensures that the nozzle continuously sprays water mist during the probe's spiral movement, forming a coupling agent in the probe's inspection area. This ensures smooth sound wave transmission between the probe and the circular slab, reducing the false negative rate. Therefore, this utility model has the advantages of improving inspection efficiency and reducing the false negative rate. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention.

[0014] Figure 2 This is a front view schematic diagram of this utility model.

[0015] The labels in the attached diagram are as follows: 1-drive wheel, 2-support wheel, 3-first rod, 4-second rod, 5-ultrasonic probe, 6-translation mechanism, 7-crossbar, 8-second guide wheel, 9-water tank, 10-nozzle, 11-support rod, 12-electrical control box, 13-hose, 14-first guide wheel, 15-circular slab. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0017] Example 1: An ultrasonic testing mechanism for a circular slab, such as Figure 1As shown, the device includes a telescopic rod with an adjustable length, comprising a first rod 3 and a second rod 4. The first rod 3 and the second rod 4 can be configured as a sliding connection and then fixed with set screws. Alternatively, an elongated hole can be provided on the second rod 4, and the first rod 3 can be connected by two screws passing through the elongated hole.

[0018] The outer end of the second rod 4 is provided with a crossbar 7, the middle part of which is fixed to the second rod 4. Both ends of the crossbar 7 are connected to the second rod 4 via support rods 11. Both ends of the first rod 3 and both ends of the crossbar 7 are provided with support wheels 2, which can be universal casters. The support wheels 2 are in rolling connection with the top surface of the circular slab 15. The bottom of the second rod 4 is provided with a drive wheel 1, which is in rolling connection with the top surface of the circular slab 15. The drive wheel 1 only needs to be able to rotate when energized. If a hub motor is used, both ends of the hub motor's axle are fixed to the second rod 4, and it rotates when energized. The rotation axis of the drive wheel 1 is perpendicular to the second rod 4.

[0019] The bottom of the outer end of the first rod 3 is rotatably connected to the first guide wheel 14, and the bottom of both ends of the crossbar 7 is rotatably connected to the second guide wheel 8. The first guide wheel 14 and the second guide wheel 8 are both rolledly connected to the outer circumferential surface of the circular slab 15.

[0020] The first rod 3 is connected to the ultrasonic probe 5 through the translation mechanism 6. The translation mechanism 6 is an electrically driven lead screw guide module, also known as a linear slide. The moving end of the translation mechanism 6 is equipped with an ultrasonic probe 5 and a nozzle 10 that are close to each other. The detection end of the ultrasonic probe 5 is downward and should be in contact with the top surface of the circular slab 15. The spray direction of the nozzle 10 is downward. The ultrasonic probe 5 is connected to an ultrasonic flaw detection device.

[0021] The second rod 4 is equipped with a water tank 9, which is connected to a nozzle 10 via a water pump. The outlet of the water pump is connected to the nozzle 10 via a hose. The water pump can be built into the water tank 9 or located on the outside of the water tank 9, depending on the type of water pump.

[0022] Working principle of Example 1: For circular slabs 15 of different diameters, by adjusting the length of the telescopic rod, it is ensured that the second guide wheel 8 and the first guide wheel 14 are both in contact with the outer circumferential surface of the circular slab 1.

[0023] Initially, the ultrasonic probe 5 is located outside the cylindrical surface of the circular slab 15. The drive wheel 1 is activated, causing the telescopic rod to rotate. Simultaneously, the translation mechanism 6 and the water pump are activated. The translation mechanism 6 moves the ultrasonic probe 5 inward. Since the telescopic rod is also rotating, the ultrasonic probe 5 moves inward in a spiral direction. It is important to avoid excessive speed of the translation mechanism 6 to prevent missed detections. The water pump pumps water from the water tank 9, which is then atomized and sprayed onto the circular slab 15 through the nozzle 10. This acts as a coupling agent, ensuring smooth sound wave transmission between the ultrasonic probe and the circular slab, thus reducing the false negative rate.

[0024] Preferably, the ultrasonic probe 5 can be connected to the moving end of the translation mechanism 6 through an elastic element. The elastic element deforms slightly and presses down on the ultrasonic probe 5. Even when the top surface of the circular slab 15 is uneven, it can still ensure that the ultrasonic probe 5 is in contact with the circular slab 15, further reducing the false negative rate.

[0025] Example 2: Based on Example 1, an electrical control box 12 is provided on the second rod 4. The drive wheel 1, water pump, and translation mechanism are all connected to the electrical control box 12. The electrical control box 12 has a built-in PLC controller, which can be a Mitsubishi FX1N-24MR-001, to enable the electrical components in Example 1 to execute automatically.

Claims

1. An ultrasonic testing mechanism for circular slabs, characterized in that: The telescopic rod includes an adjustable length telescopic rod with a drive wheel (1) and a support wheel (2) at the bottom. The telescopic rod includes a first rod (3) and a second rod (4). The bottom of the outer end of the first rod (3) is provided with a first guide wheel (14). The first rod (3) is connected to the ultrasonic probe (5) through a translation mechanism (6). The outer end of the second rod (4) is provided with a crossbar (7). The bottom of both ends of the crossbar (7) is provided with a second guide wheel (8). The second rod (4) is provided with a water tank (9). The water tank (9) is connected to a nozzle (10) through a water pump. The nozzle (10) is located on one side of the ultrasonic probe (5) and is connected to the translation mechanism (6).

2. The ultrasonic testing mechanism for circular slabs according to claim 1, characterized in that: The drive wheel (1) is located at the bottom of the second rod (4), and support wheels (2) are provided at both ends of the first rod (3) and both ends of the crossbar (7).

3. The ultrasonic testing mechanism for circular slabs according to claim 1, characterized in that: The translation mechanism (6) is an electrically driven lead screw guide module, and the ultrasonic probe (5) and the nozzle (10) are both connected to the moving end of the translation mechanism (6).

4. The ultrasonic testing mechanism for circular slabs according to claim 1, characterized in that: Both ends of the crossbar (7) are connected to the second member (4) via support rods (11).

5. The ultrasonic testing mechanism for circular slabs according to claim 1, characterized in that: The second rod (4) is equipped with an electrical control box (12), and the drive wheel (1), water pump and translation mechanism are all connected to the electrical control box (12).

6. The ultrasonic testing mechanism for circular slabs according to claim 1, characterized in that: The water pump is connected to the nozzle (10) via a hose (13).

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