Rapid screening instrument for internal defects of ship weld joints

Abstract

The utility model relates to a rapid screening instrument for internal defects of ship welding seams, which belongs to the technical field of ship welding seam detection and comprises a rapid screening instrument body, and a fixing structure for fixing is arranged on one side of the rapid screening instrument body. The fixing structure comprises a vacuum suction cup, a vacuum piece is arranged on the vacuum suction cup, and a connecting piece used for connection is arranged between the vacuum suction cup and the rapid screening instrument body. According to the rapid screening instrument for the internal defects of the ship weld joints, the rapid screening instrument body is fixed through vacuum adsorption, drilling, pasting or using of glue on the surface of a ship is not needed, damage to a ship body is avoided, the rapid screening instrument is particularly suitable for temporary detection or scenes needing frequent movement, the position of the piston is fixed only by manually pulling the piston in cooperation with a locking function, and the working efficiency is improved. In addition, when vacuum is released, only the sealing plug needs to be pulled out, operation is simple and efficient, and the advantage that operation is convenient and fast is achieved.

Description

Technical Field

[0001] This utility model relates to the field of ship weld inspection technology, specifically a rapid screening instrument for internal defects in ship welds. Background Technology

[0002] Defects such as porosity, slag inclusions, lack of fusion, incomplete penetration, and cracks within welds pose potential safety hazards and can easily propagate under complex marine loads, potentially leading to catastrophic accidents. Therefore, non-destructive testing of ship welds is a mandatory requirement in shipbuilding standards.

[0003] Therefore, rapid screening instruments for internal defects in ship welds have emerged. These devices aim to achieve rapid, reliable, and digital inspection of welds through automation, mechanization, and intelligent technologies. Due to the confined spaces in some areas of ships, portable digital inspection equipment such as high-end phased array ultrasonic transducers and TOFD transducers are required. Inspection personnel perform scanning operations by holding an ultrasonic probe. The core advantages of these devices lie in their extremely high flexibility and portability, enabling them to handle complex and confined spaces inaccessible to robots and to perform rapid inspection of unconventional areas.

[0004] However, existing handheld devices cannot be stably "suspended" or "attached" to the hull surface in any way, requiring operators to hold the detector in one hand and operate it with the other. This not only leads to decreased coupling stability, but also, since ultrasonic testing requires a stable acoustic channel between the probe and the steel plate through a coupling agent, it is impossible to provide continuous, uniform, and vertical pressure with one hand suspended in the air. Operator arm muscle fatigue causes pressure fluctuations, resulting in changes in the coupling layer thickness and drastic fluctuations in signal strength. Weak defect echoes may be completely drowned out by noise, leading to serious missed detections. At the same time, unstable signals are also prone to misjudgment. Therefore, a rapid screening instrument for internal defects in ship welds is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a rapid screening instrument for internal defects in ship welds, which has the advantages of convenient installation and high flexibility, and solves the problems mentioned in the background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rapid screening instrument for internal defects in ship welds includes a rapid screening instrument body, and a fixing structure for fixing is provided on one side of the rapid screening instrument body;

[0008] The fixing structure includes a vacuum suction cup, on which a vacuum component is provided, and a connector for connection is provided between the vacuum suction cup and the body of the rapid screening instrument. A vacuum groove is opened inside the vacuum suction cup to cooperate with the vacuum component.

[0009] The vacuum component includes a vacuum tube fixed to the top side of the vacuum suction cup, a piston extending outwards is slidably disposed inside the vacuum tube, a handle is installed on the outside of the piston, a positioning ring is installed on the top outer surface of the vacuum tube and sleeved on the outside of the piston, and a locking rod for fixing the piston is elastically installed inside the positioning ring, and a sealing plug is inserted into the side wall of the vacuum suction cup.

[0010] Furthermore, the vacuum suction cup has a through hole inside that communicates with the vacuum groove and the vacuum tube, and the piston is T-shaped and consists of a welded circular block and a circular shaft.

[0011] Furthermore, the cylindrical portion of the piston passes through the interior of the positioning ring, and a positioning hole is provided inside the cylindrical portion of the piston to engage with the locking rod. A return spring is installed between the outer surface of the locking rod and the side wall of the positioning ring.

[0012] Furthermore, the connector includes a connecting seat and a mounting seat arranged opposite to each other. The mounting seat is fixed to one side of the vacuum suction cup, and a mounting block that is bolted to the outer wall of the rapid screening instrument body is welded to one side of the connecting seat.

[0013] Furthermore, the connecting seat is U-shaped, and the connecting component also includes a connecting block disposed in the groove of the connecting seat. The mounting seat is fixed with a telescopic block that is telescopically connected to the connecting block on the side near the connecting seat, and an adjusting bolt extending into the telescopic block is installed inside the connecting block.

[0014] Furthermore, the connecting seat is equipped with a tightening bolt that penetrates the interior of the connecting block, and the telescopic block has an adjustment hole that is fastened to the adjusting bolt.

[0015] Compared with the prior art, this utility model provides a rapid screening instrument for internal defects in ship welds, which has the following beneficial effects:

[0016] 1. This rapid screening instrument for internal defects in ship welds uses vacuum adsorption to fix the instrument body, eliminating the need for drilling, pasting, or using glue on the ship surface, thus avoiding damage to the hull. It is especially suitable for temporary inspections or scenarios requiring frequent movement. Furthermore, vacuuming only requires manually pulling the piston, and the locking function fixes the piston position, eliminating the need for continuous manual maintenance. Fixing can be completed with one hand. In addition, releasing the vacuum only requires pulling out the sealing plug, making the operation simple, efficient, and convenient.

[0017] 2. The rapid screening instrument for internal defects in ship welds uses a connecting piece with a telescopic block and adjusting bolts to adjust the distance between the suction cup and the screening instrument. At the same time, the connecting seat and the connecting block are adjusted by tightening and loosening bolts to ensure that the display screen of the rapid screening instrument body can be better facing the staff. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional view of the overall structure of the fixing structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the vacuum component of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the connector of this utility model.

[0022] In the diagram: 1. Rapid screening instrument body; 2. Fixing structure; 21. Vacuum suction cup; 22. Vacuum tank; 23. Vacuum component; 231. Vacuum tube; 232. Piston; 233. Handle; 234. Positioning ring; 235. Locking rod; 236. Return spring; 24. Sealing plug; 25. Connecting component; 251. Connecting seat; 252. Connecting block; 253. Mounting seat; 254. Telescopic block; 255. Adjusting bolt; 256. Tightening bolt; 26. Mounting block. Detailed Implementation

[0023] 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 some embodiments of the present utility model, and not all embodiments. 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 protection scope of the present utility model.

[0024] Please see Figures 1 to 4This embodiment discloses a rapid screening instrument for internal defects in ship welds, comprising a rapid screening instrument body 1. A fixing structure 2 for fixation is provided on one side of the rapid screening instrument body 1. The fixing structure 2 includes a vacuum suction cup 21, on which a vacuum component 23 is provided. A connector 25 for connection is provided between the vacuum suction cup 21 and the rapid screening instrument body 1. A vacuum groove 22 is formed inside the vacuum suction cup 21 to cooperate with the vacuum component 23. In use, it adsorbs the ship surface through negative pressure, eliminating the need for drilling, pasting, or glue, thus avoiding physical damage to the hull. It should be noted that a connector and a detection line are installed on the top side of the rapid screening instrument body 1. The rapid screening instrument body 1 is a conventional technology known to the public in the prior art; therefore, its specific structural composition and working principle will not be described in detail here.

[0025] To achieve vacuum adsorption of the vacuum suction cup 21, the vacuum component 23 includes a vacuum tube 231 fixed to the top side of the vacuum suction cup 21. A piston 232 extending outwards is slidably disposed inside the vacuum tube 231. A handle 233 is installed on the outside of the piston 232. A positioning ring 234, sleeved on the outer surface of the top side of the vacuum tube 231, is fitted onto the outside of the piston 232. A locking rod 235, elastically installed inside the positioning ring 234, secures the piston 232. A sealing plug 24 is inserted into the side wall of the vacuum suction cup 21. By removing the sealing plug 24, the seal of the vacuum groove 22 is broken, allowing external air to enter quickly, separating the suction cup from the surface, and making the removal of the device efficient and convenient. The vacuum suction cup 21 has a through hole communicating with the vacuum groove 22 and the vacuum tube 231. The piston 232 is T-shaped and consists of a welded circular block and a circular shaft.

[0026] Specifically, the cylindrical portion of piston 232 passes through the interior of positioning ring 234, and a positioning hole is provided inside the cylindrical portion of piston 232 for insertion and engagement with locking rod 235. A return spring 236 is installed between the outer surface of locking rod 235 and the side wall of positioning ring 234. Under the action of return spring 236, locking rod 235 is inserted into the positioning hole of piston 232 cylindrical portion, fixing the position of piston 232, preventing rebound, and ensuring stable vacuum without the need for continuous manual maintenance.

[0027] To improve the installation flexibility of the rapid screening instrument body 1, the connector 25 includes a connecting seat 251 and a mounting seat 253 arranged opposite each other. The mounting seat 253 is fixed to one side of the vacuum suction cup 21, and a mounting block 26, which is bolted to the outer wall of the rapid screening instrument body 1, is welded to one side of the connecting seat 251. Specifically, the connecting seat 251 is U-shaped, and the connector 25 also includes a connecting block 252 disposed in the groove of the connecting seat 251. A telescopic block 254, which is telescopically connected to the connecting block 252, is fixed to the side of the mounting seat 253 near the connecting seat 251. An adjusting bolt 255 extending into the telescopic block 254 is installed inside the connecting block 252. A tightening bolt 256 penetrating the interior of the connecting block 252 is installed inside the connecting seat 251. In use, the connecting block 252 can rotate within the groove of the connecting seat 251 and is fixed by the tightening bolt 256, allowing the rapid screening instrument body 1 to move left and right or tilt up and down, ensuring that the display screen is directly in the line of sight of the operator and avoiding inconvenience in observation due to the misalignment of the weld seam. The telescopic block 254 has an adjustment hole inside that is fastened to the adjustment bolt 255. By fixing the telescopic block 254 to the telescopic connecting adjustment bolt 255 of the connecting block 252, the distance between the rapid screening instrument body 1 and the vacuum suction cup 21 can be adjusted so that the display screen is away from or close to the staff, adapting to different station requirements such as narrow cabins or open decks.

[0028] The working principle of the above embodiments is as follows:

[0029] First, the rapid screening instrument body 1 is fixed to the connecting seat 251 by the mounting block 26 bolts. The vacuum suction cup 21 is pressed near the weld to be inspected on the ship steel plate. At this time, the soft sealing material on the edge of the vacuum suction cup 21 will initially adhere to the steel plate, forming a preliminary sealed space. Then, the operator holds and pulls the handle 233 outward, which drives the piston 232 to move upward from the vacuum tube 231. The movement of the piston 232 will increase the volume of the vacuum tube 231 and the vacuum groove 22 connected to it, and reduce the air pressure, thereby forming a negative pressure. The external atmospheric pressure will press the vacuum suction cup 21 tightly onto the steel plate, generating a huge suction force, thereby achieving rapid fixation of the rapid screening instrument body 1.

[0030] When piston 232 is pulled to the highest position, the positioning hole on piston 232 will move to the position aligned with locking rod 235. Under the elastic force of return spring 236, locking rod 235 will be inserted into positioning hole of piston 232, mechanically locking vacuum component 23 in the current position, preventing it from returning to its original position due to internal negative pressure or external vibration, thereby maintaining the stability of vacuum state and ensuring the reliability of adsorption.

[0031] During use, by loosening or tightening the bolt 256, the connecting block 252 can slide in the groove of the connecting seat 251, thereby driving the rapid screening instrument body 1 to adjust the angle. At the same time, by tightening the adjusting bolt 255, it can push or pull the telescopic block 254 to perform a small amount of telescopic movement in the connecting block 252, further improving the adjustment flexibility of the rapid screening instrument body 1.

[0032] After the test is completed, pull out the sealing plug 24 and locking rod 235 to release the lock on piston 232. Air will quickly enter vacuum chamber 22, restoring the internal and external air pressure balance and eliminating the adsorption force. At this point, the entire rapid screening instrument body 1 can be easily removed from the hull.

[0033] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0034] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid screening instrument for internal defects in ship welds, characterized in that: It includes a rapid screening instrument body (1), and a fixing structure (2) for fixing is provided on one side of the rapid screening instrument body (1); The fixed structure (2) includes a vacuum suction cup (21), a vacuum component (23) is provided on the vacuum suction cup (21), and a connector (25) for connection is provided between the vacuum suction cup (21) and the rapid screening instrument body (1). A vacuum groove (22) is opened inside the vacuum suction cup (21) to cooperate with the vacuum component (23). The vacuum component (23) includes a vacuum tube (231) fixed to the top side of the vacuum suction cup (21). A piston (232) extending outward is slidably disposed inside the vacuum tube (231). A handle (233) is installed on the outside of the piston (232). A positioning ring (234) sleeved on the outer surface of the top side of the vacuum tube (231) is installed. A locking rod (235) for fixing the piston (232) is elastically installed inside the positioning ring (234). A sealing plug (24) is inserted into the side wall of the vacuum suction cup (21).

2. The rapid screening instrument for internal defects in ship welds according to claim 1, characterized in that: The vacuum suction cup (21) has a through hole inside that communicates with the vacuum groove (22) and the vacuum tube (231). The piston (232) is T-shaped and is composed of a welded circular block and a circular shaft.

3. The rapid screening instrument for internal defects in ship welds according to claim 2, characterized in that: The cylindrical portion of the piston (232) passes through the interior of the positioning ring (234), and the cylindrical portion of the piston (232) has a positioning hole that engages with the locking rod (235). A return spring (236) is installed between the outer surface of the locking rod (235) and the side wall of the positioning ring (234).

4. The rapid screening instrument for internal defects in ship welds according to claim 1, characterized in that: The connector (25) includes a connector (251) and a mounting base (253) arranged opposite to each other. The mounting base (253) is fixed to one side of the vacuum suction cup (21). A mounting block (26) is welded to one side of the connector (251) and is bolted to the outer wall of the rapid screening instrument body (1).

5. A rapid screening instrument for internal defects in ship welds according to claim 4, characterized in that: The connecting seat (251) is U-shaped. The connecting member (25) also includes a connecting block (252) disposed in the groove of the connecting seat (251). The mounting seat (253) is fixed with a telescopic block (254) that is telescopically connected to the connecting block (252) on the side near the connecting seat (251). An adjusting bolt (255) extending into the telescopic block (254) is installed inside the connecting block (252).

6. A rapid screening instrument for internal defects in ship welds according to claim 5, characterized in that: The connecting seat (251) is equipped with a tightening bolt (256) that passes through the interior of the connecting block (252), and the telescopic block (254) has an adjustment hole that is fastened to the adjusting bolt (255).

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