An ultrasonic ship hull weld inspection device

Abstract

The utility model provides a kind of ultrasonic ship body weld detection device, belong to ship body weld detection field, including frame, the top of frame is provided with the detection mechanism for detecting ship body weld, the limiting assembly that prevents detection mechanism from separating from frame is provided on the detection mechanism.The utility model is provided with the detection mechanism, coupling agent is coated in the probe of ultrasonic flaw detector and weld when using, then the device is placed outside at ship body weld, then start electric push rod, make it drive the probe of ultrasonic flaw detector to drop, until with weld sticking, then start motor, motor drives slider, electric push rod and the probe of ultrasonic flaw detector reciprocate, the probe of ultrasonic flaw detector moves longitudinally at this moment, worker pushes support frame to move horizontally on the top of frame, to carry out accurate detection to weld.

Description

Technical Field

[0001] This utility model relates to the field of ship hull weld inspection, and more specifically, to an ultrasonic ship hull weld inspection device. Background Technology

[0002] As the core equipment for water transport and engineering operations, the structural safety of ships is directly related to the safety of people's lives and property. As a key part connecting various structural components, the hull welds are subjected to alternating loads, seawater corrosion and changes in ambient temperature over a long period of time, which can easily lead to defects such as cracks, lack of fusion and porosity. Therefore, weld inspection technology is a core link to ensure the safety of ships throughout their entire life cycle.

[0003] A search revealed that Chinese Patent Publication No. CN217156425U discloses "an ultrasonic hull weld inspection device, comprising: a frame; a permanent magnet placed at the bottom of the frame; a battery placed on the frame; a camera placed at the front and rear ends of the frame and connected to the battery via wires; an ultrasonic generator, with several ultrasonic generators mounted on a support plate; and a moving component placed between the support plate and the frame, the moving component driving the support plate to move; wherein the frame is equipped with wheels, the wheels are mounted on the frame via axles, the axles are equipped with a first gear, the frame is equipped with a first motor, the output shaft of the first motor is equipped with a second gear, the first motor is connected to the battery, and the axles are connected by belts and pulleys. This application provides an ultrasonic hull weld inspection device that improves inspection efficiency and can perform full-coverage scanning of the weld ends, improving inspection accuracy and precision." However, it still has the following drawbacks: The current device uses ultrasonic technology for weld inspection. However, when emitting ultrasonic waves, a large gap exists between the emitted waves and the workpiece. Since the acoustic impedance of air is much lower than that of metal, the sound waves are severely reflected at the interface, making it impossible to effectively detect weld defects. Therefore, an ultrasonic hull weld inspection device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the problem that existing ultrasonic hull weld inspection devices use ultrasonic technology for weld inspection, but when the device emits ultrasonic waves, there is a large gap between the emitted ultrasonic waves and the workpiece. The acoustic impedance of air is much lower than that of metal, causing severe reflection of the sound waves at the interface, which in turn makes it impossible to effectively detect weld defects.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: The present invention is as follows: an ultrasonic hull weld inspection device, comprising a frame, wherein a detection mechanism for inspecting hull welds is provided on the top of the frame, and a limiting component is provided on the detection mechanism to prevent the detection mechanism from detaching from the frame; The detection mechanism includes a support frame that is slidably connected to the top of the frame. A groove is provided at the bottom of the support frame. A lead screw is rotatably connected inside the groove. A motor is coaxially mounted at one end of the lead screw. A slider is slidably connected to the outside of the lead screw. An electric actuator is bolted to the bottom of the slider. A connecting plate is fixedly connected to the telescopic end of the electric actuator. A retaining ring is fixedly connected to the side wall of the connecting plate. An ultrasonic flaw detector is bolted to the outer wall of the support frame.

[0006] As a preferred technical solution of this utility model, the limiting component includes a limiting groove opened inside the frame, and limiting blocks are fixedly connected to both ends of the bottom of the support frame, with the limiting blocks slidably connected to the limiting groove.

[0007] As a preferred technical solution of this utility model, the top of the support frame is fixedly connected to two vertical rods, and the top of each of the two vertical rods is fixedly connected to a limit ring.

[0008] As a preferred technical solution of this utility model, an installation groove is provided on the inner side wall of the support frame, a storage battery is bolted inside the installation groove, and a baffle is bolted to the inner side wall of the support frame.

[0009] As a preferred technical solution of this utility model, a suction cup is fixedly connected to the bottom of the frame. There are four suction cups, which are located at the four corners of the frame. The suction cups are made of wear-resistant rubber.

[0010] As a preferred technical solution of this utility model, the frame body has an arc-shaped groove inside, and the bottom of both ends of the support frame are rotatably connected to a rotating wheel, with the bottom of the two rotating wheels respectively closely fitting the bottom of the two arc-shaped grooves.

[0011] As a preferred technical solution of this utility model, the bottom of the support frame is bolted with two limiting plates that limit the slider, and the two limiting plates are arranged opposite to each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Using the established detection mechanism, the coupling agent is applied to the probe of the ultrasonic flaw detector and the weld. The device is then placed outside the weld of the hull. The electric actuator is then activated to lower the probe of the ultrasonic flaw detector until it is in contact with the weld. The motor is then activated, which drives the slider, the electric actuator, and the probe of the ultrasonic flaw detector to move back and forth. At this time, the probe of the ultrasonic flaw detector moves longitudinally while the worker pushes the support frame to move laterally on the top of the frame, thereby accurately detecting the weld. 2. By setting a limiting component, when the support frame moves laterally at the top of the frame, the limiting block will move laterally inside the limiting groove, thereby preventing the support frame from detaching from the frame and affecting the normal inspection of the weld. Attached Figure Description

[0013] Figure 1 A schematic diagram of the ultrasonic hull weld inspection device provided by this utility model; Figure 2 Front view of the ultrasonic hull weld inspection device provided by this utility model; Figure 3 The ultrasonic hull weld inspection device provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA; Figure 4 A partial structural schematic diagram of the ultrasonic hull weld inspection device provided by this utility model; Figure 5 A schematic diagram of the vertical rod and limiting ring of the ultrasonic hull weld inspection device provided by this utility model; Figure 6 The ultrasonic hull weld inspection device provided by this utility model Figure 3 Enlarged view of point A in the middle.

[0014] The diagram shows: 1. Frame; 2. Detection mechanism; 3. Limiting component; 4. Vertical rod; 5. Limiting ring; 6. Mounting groove; 7. Battery; 8. Baffle; 9. Suction cup; 10. Arc groove; 11. Rotary wheel; 12. Limiting plate; 201. Support frame; 202. Slide groove; 203. Lead screw; 204. Motor; 205. Slider; 206. Electric actuator; 207. Connecting plate; 208. Snap ring; 209. Ultrasonic flaw detector; 301. Limiting groove; 302. Limiting block. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0016] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0017] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] like Figure 1 As shown, this embodiment proposes an ultrasonic hull weld inspection device, including a frame 1, a detection mechanism 2 for inspecting hull welds is provided on the top of the frame 1, and a limiting component 3 is provided on the detection mechanism 2 to prevent the detection mechanism 2 from detaching from the frame 1. like Figure 3 and Figure 4 As shown, the detection mechanism 2 includes a support frame 201 slidably connected to the top of the frame 1. A groove 202 is provided at the bottom of the support frame 201. A lead screw 203 is rotatably connected inside the groove 202. A motor 204 is coaxially mounted at one end of the lead screw 203. A slider 205 is slidably connected to the outside of the lead screw 203. The motor 204 can drive the lead screw 203 to rotate inside the groove 202. An electric actuator 206 is bolted to the bottom of the slider 205. A connecting plate 207 is fixedly connected to the telescopic end of the electric actuator 206. A retaining ring 208 is fixedly connected to the side wall of the connecting plate 207. An ultrasonic flaw detector 209 is bolted to the outer wall of the support frame 201. The ultrasonic flaw detector 209 has its own probe and is connected to the probe via a wire. The electric actuator 206 can drive the connecting plate 207, retaining ring 208, and the probe of the ultrasonic flaw detector 209 to move up and down. The motor 204 is bolted to the outer wall of the support frame 201. The output end of the motor 204 can... The ultrasonic flaw detector 209 can switch between clockwise and counterclockwise rotation. The probe of the ultrasonic flaw detector 209 is engaged with the retaining ring 208. During use, the frame 1 is placed outside the weld, and coupling agent is applied to the weld and the probe of the ultrasonic flaw detector 209. Then, the electric actuator 206 is activated, bringing the probe of the ultrasonic flaw detector 209 into contact with the surface of the hull weld. Next, the motor 204 is activated, causing the lead screw 203 to rotate. This causes the slider 205, electric actuator 206, connecting plate 207, retaining ring 208, and the probe of the ultrasonic flaw detector 209 to move. By switching the output of the motor 204 between clockwise and counterclockwise rotation, the probe of the ultrasonic flaw detector 209 can reciprocate, performing two inspections. After the probe of the ultrasonic flaw detector 209 reciprocates once, the worker can push the support frame 201 to move on top of the frame 1, and then inspect another location. Repeating this process allows for accurate inspection of the weld.

[0020] like Figure 6As shown, the limiting component 3 includes a limiting groove 301 opened inside the frame 1. Both ends of the bottom of the support frame 201 are fixedly connected to limiting blocks 302. When the support frame 201 moves inside the frame 1, the limiting blocks 302 will also slide inside the limiting groove 301. The limiting blocks 302 and the limiting groove 301 are slidably connected. When the support frame 201 moves, the limiting blocks 302 slide inside the limiting groove 301, thereby preventing the support frame 201 from falling off the frame 1 and affecting the normal flaw detection operation.

[0021] like Figure 3 and Figure 5 As shown, two vertical rods 4 are fixedly connected to the top of the support frame 201. Limiting rings 5 ​​are fixedly connected to the top of each of the two vertical rods 4. When in use, the ultrasonic flaw detector 209 is connected to the probe through a wire. At this time, the limiting rings 5 ​​can limit the wire to prevent the wire from falling off the support frame 201 and improve the cleanliness of the device.

[0022] like Figure 6 As shown, a mounting groove 6 is provided on the inner wall of the support frame 201, and a storage battery 7 is bolted inside the mounting groove 6. A baffle 8 is bolted to the inner wall of the support frame 201. When in use, the storage battery 7 can power the motor 204, the electric push rod 206 and the ultrasonic flaw detector 209. It can operate normally without the aid of an external power source. The baffle 8 can prevent external hard objects from contacting the storage battery 7 and causing it to be damaged.

[0023] like Figure 1 As shown, four suction cups 9 are fixedly connected to the bottom of the frame 1, and they are located at the four corners of the frame 1 respectively. The suction cups 9 are made of wear-resistant rubber. When in use, the four suction cups 9 can fix the frame 1 to prevent the frame 1 from shifting during flaw detection.

[0024] like Figure 6 As shown, the frame 1 has an arc-shaped groove 10 inside. Both ends of the support frame 201 are rotatably connected to the bottom of the two rollers 11. The bottom of the two rollers 11 is tightly fitted with the bottom of the two arc-shaped grooves 10 respectively. When the limiting block 302 slides inside the limiting groove 301, the rollers 11 can prevent friction between the limiting block 302 and the bottom of the limiting groove 301, thereby improving the efficiency of moving the support frame 201.

[0025] like Figure 5 As shown, two limiting plates 12 are bolted to the bottom of the support frame 201 to limit the slider 205. The two limiting plates 12 are arranged opposite to each other. When in use, the two limiting plates 12 are tightly fitted to the bottom of the slider 205, thereby preventing the slider 205 from rotating with the lead screw 203.

[0026] Specifically, when this ultrasonic hull weld inspection device is in use: the battery 7 can provide power to the motor 204, electric actuator 206, and ultrasonic flaw detector 209 (e.g.,Figure 3 and Figure 6 As shown), place frame 1 outside the weld, and apply coupling agent to the weld and the probe of ultrasonic flaw detector 209. Then, start electric actuator 206 to make the probe of ultrasonic flaw detector 209 fit against the surface of the hull weld. Then, start motor 204 to rotate lead screw 203. Then, slider 205, electric actuator 206, connecting plate 207, retaining ring 208 and probe of ultrasonic flaw detector 209 will move (as shown). Figure 3 and Figure 4 As shown), by switching the output of motor 204 between clockwise and counterclockwise rotation, the probe of ultrasonic flaw detector 209 can reciprocate to perform two inspections. When the probe of ultrasonic flaw detector 209 reciprocates once, the worker can push support frame 201 to move at the top of frame 1 to inspect another location. At this time, limit block 302 slides inside limit groove 301 (as shown). Figure 6 As shown in the figure, this avoids the support frame 201 from detaching from the frame 1, which would affect the normal flaw detection operation. By repeating the above process, the weld can be accurately detected.

[0027] All technical features in this embodiment can be freely combined according to actual needs.

[0028] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An ultrasonic hull weld inspection device, comprising a frame (1), characterized in that, The top of the frame (1) is provided with a detection mechanism (2) for detecting the hull welds, and the detection mechanism (2) is provided with a limiting component (3) to prevent the detection mechanism (2) from detaching from the frame (1). The detection mechanism (2) includes a support frame (201) that is slidably connected to the top of the frame (1). A groove (202) is provided at the bottom of the support frame (201). A lead screw (203) is rotatably connected inside the groove (202). A motor (204) is coaxially provided at one end of the lead screw (203). A slider (205) is slidably connected to the outside of the lead screw (203). An electric push rod (206) is bolted to the bottom of the slider (205). A connecting plate (207) is fixedly connected to the telescopic end of the electric push rod (206). A retaining ring (208) is fixedly connected to the side wall of the connecting plate (207). An ultrasonic flaw detector (209) is bolted to the outer wall of the support frame (201).

2. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The limiting component (3) includes a limiting groove (301) opened inside the frame (1), and limiting blocks (302) are fixedly connected to both ends of the bottom of the support frame (201). The limiting blocks (302) are slidably connected to the limiting groove (301).

3. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The top of the support frame (201) is fixedly connected to two vertical rods (4), and the top of each of the two vertical rods (4) is fixedly connected to a limit ring (5).

4. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The support frame (201) has an installation groove (6) on its inner side wall, and a storage battery (7) is bolted inside the installation groove (6). A baffle (8) is bolted to the inner side wall of the support frame (201).

5. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The bottom of the frame (1) is fixedly connected with a suction cup (9). There are four suction cups (9), which are located at the four corners of the frame (1). The suction cups (9) are made of wear-resistant rubber.

6. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The frame (1) has an arc-shaped groove (10) inside. Both ends of the support frame (201) are rotatably connected to the bottom of the two wheels (11). The bottom of the two wheels (11) is tightly fitted to the bottom of the two arc-shaped grooves (10).

7. The ultrasonic hull weld inspection device according to claim 1, characterized in that, The bottom of the support frame (201) is bolted with two limiting plates (12) that limit the slider (205), and the two limiting plates (12) are arranged opposite to each other.

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