A container weld defect detection device

Abstract

The utility model discloses a container weld joint defect detection device belongs to container detection field, and this device includes two parallel interval slide bar, and the upper end of slide bar is equipped with the hook, and the upper section is through first connecting plate fixedly connected, and the lower section is through second connecting plate fixedly connected, and the sliding sleeve of two slide bars is equipped with detection mechanism, and the detection mechanism contains slide cover, connecting rod and installation platform, and the installation platform is equipped with detection probe and daub sponge, and first connecting plate sets up spring reel, and its guyed connection installation platform, and installation platform still is equipped with pull rope. The device is hung in the top of container through the hook, need not aerial work to control detection mechanism along slide bar and remove, realize to vertical long strip weld joint's whole course detection, solved the problem that the existing technology high altitude operation safety and detection stability is difficult to give priority to.

Description

Technical Field

[0001] This utility model relates to the field of container inspection, and in particular to a container weld defect detection device. Background Technology

[0002] As the core carrier of new energy storage systems, energy storage containers integrate a large number of battery modules and power distribution equipment. The multiple vertical strip welds on the side panels of the container not only need to withstand the structural stress during stacking and transportation, but also directly affect the sealing and safety of the battery compartment.

[0003] For the inspection of vertical long welds (typically 2.4-3.5m high) in energy storage containers, existing technologies face a dilemma between "safety of high-altitude operation" and "inspection effectiveness": On the one hand, current inspections mostly rely on manual climbing of scaffolding or manual operation of phased array ultrasonic probes by hand. The former carries the risk of falling from heights, and the cables and pipelines around energy storage containers often further compress the space for high-altitude operations; the latter lacks a stable support structure, and the arm is prone to fatigue and swaying during the inspection process, leading to misalignment between the probe and the weld. On the other hand, when manually holding the probe, the contact pressure is entirely dependent on experience for control, resulting in large pressure fluctuations. This leads to a high rate of missed defects in the upper and middle welds due to unstable operation, failing to meet the requirement of reliable inspection of all welds in the container. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a container weld defect detection device that solves the problem of balancing "high-altitude operation safety" and "reliable detection of the entire weld" in the existing detection of vertical long strip welds in energy storage containers.

[0005] The technical solution of this utility model is as follows: A container weld defect detection device includes two parallel, spaced-apart slide rods. Each slide rod has a hook at its upper end. The upper sections of the two slide rods near the hooks are fixedly connected by a first connecting plate, and the lower sections away from the hooks are fixedly connected by a second connecting plate. A detection mechanism is slidably sleeved on the two slide rods between the first and second connecting plates. The detection mechanism includes slide sleeves respectively sleeved on the two slide rods, a connecting rod fixed between the two slide sleeves, and a mounting platform on the connecting rod. A detection probe and an application sponge are provided on the side of the mounting platform facing the extension direction of the hooks. The detection probe is located above the application sponge and the two are spaced apart along the same straight line. An elastic winding device is provided on the first connecting plate, and the pull line of the elastic winding device is connected to the mounting platform. The mounting platform is also provided with a pull rope for pulling down the detection mechanism.

[0006] Furthermore, the hook is a downward-opening C-shape, with one side of the C-shaped hook fixed to the top of the slide bar and the other side having a short horizontal section at its end. The height of the C-shaped hook is set such that when it is hooked to the top edge of the container being inspected and the inspection mechanism is in its initial position, the initial height of the inspection probe and the smearing sponge is not lower than the highest point of the weld seam of the container being inspected.

[0007] Furthermore, each of the sliding sleeves is provided with a limiting rod on the side facing the extension direction of the hook. When the hook is attached to the top edge of the container being inspected, the free end of the limiting rod abuts against the side wall of the container being inspected, and the two cooperate to limit the tilt of the sliding rod; the free end of the limiting rod is provided with a silicone block.

[0008] Furthermore, a telescopic assembly is provided between the detection probe and the mounting platform, and between the application sponge and the mounting platform; each telescopic assembly includes a guide cylinder arranged perpendicular to the mounting platform, and a movable rod is movably inserted inside the guide cylinder. One end of the two movable rods is connected to the detection probe and the application sponge, respectively, and the other end extends out of the guide cylinder and is screwed with a limit nut at both ends; a spring is sleeved on the outer periphery of each movable rod, one end of the spring abuts against the corresponding detection probe or application sponge, and the other end abuts against the end face of the corresponding guide cylinder near the detection probe or application sponge.

[0009] Furthermore, the detection probe is an ultrasonic angle probe.

[0010] The beneficial effects of this utility model are as follows: 1. This utility model eliminates the risks of high-altitude operations by using C-shaped hooks for attachment and ground-based rope control, and avoids the limitation of operating space by cables and pipelines around the container; the segmented telescopic slide bar can be adapted to welds of different heights from 2.4 to 3.5m, and the horizontal adjustment of the mounting platform connecting rod can meet the needs of multi-position inspection; at the same time, the elastic reel achieves automatic reset of the inspection mechanism, and a single person can complete the operation, improving inspection efficiency.

[0011] 2. This utility model enhances detection stability through a triple structural design, addressing the pain points of manually holding the probe: First, the triangular support and fixing rod formed by the "hook-limiting rod" ensures that the movement path of the detection mechanism is parallel to the weld, avoiding overall deviation; second, the rollers inside the sliding sleeve, in conjunction with springs, adapt to the diameter difference and transition between the first and second sliding rods, ensuring smooth and uninterrupted downward movement of the detection mechanism; third, the telescopic component applies constant elastic pressure to the detection probe and the application sponge through springs, avoiding coupling pressure fluctuations, ultimately effectively reducing the missed detection rate of defects in the upper and middle welds and meeting the requirements for reliable weld detection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the detection mechanism structure of this utility model.

[0014] Figure 3 This is a schematic diagram showing the disassembly of the roller of this utility model.

[0015] Figure 4 This is a disassembly diagram of the locking component of this utility model.

[0016] Figure 5 This is a disassembly diagram of the telescopic component of this utility model.

[0017] Reference numerals in the attached drawings: 1. Slide rod; 1-1. First slide rod; 1-2. Second slide rod; 2. Hook; 3. First connecting plate; 4. Second connecting plate; 5. Detection mechanism; 5-1. Sliding sleeve; 5-1.1. Main body; 5-1.2. Roller; 5-1.3. Rotating shaft; 5-1.4. Cover plate; 5-1.5. Spring; 5-1.6. Limiting rod; 5-2. Connecting rod; 5-3. Mounting platform; 5-3.1. Sliding plate; 5-3. 2. Mounting plate; 5-3.3. Locking assembly; 5-3.3.1. Upper locking rod; 5-3.3.2. Lower locking rod; 5-3.3.2.1. Valve stem; 5-3.3.3. Adjusting head; 5-4. Detection probe; 5-5. Coating sponge; 5-6. Telescopic assembly; 5-6.1. Guide cylinder; 5-6.2. Movable rod; 5-6.3. Return spring; 5-6.4. Limit nut; 6. Elastic reel; 7. Pull rope. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] A container weld defect detection device includes two parallel and spaced sliding rods 1. Each sliding rod 1 has a hook 2 at its upper end for attaching to the top edge of the container. The upper sections of the two sliding rods 1 near the hook 2 are fixedly connected by a first connecting plate 3, and the lower sections away from the hook 2 are fixedly connected by a second connecting plate 4. The first connecting plate 3 and the second connecting plate 4 are arranged parallel to each other. A detection mechanism 5, movable along the length of the sliding rod 1, is slidably sleeved on the two sliding rods 1 between the first connecting plate 3 and the second connecting plate 4, achieving detection coverage of welds at different heights. The detection mechanism 5 includes sliding sleeves 5-1 respectively sleeved on the two sliding rods 1, and a mechanism fixed between the two sliding sleeves 5-1. The connecting rod 5-2 and the mounting platform 5-3 are provided on the connecting rod 5-2; the mounting platform 5-3 is provided on the side facing the extension direction of the hook 2 with a detection probe 5-4 for collecting weld defect signals and a sponge 5-5 for applying coupling agent. The detection probe 5-4 is an angled probe, and the detection probe 5-4 is located above the sponge 5-5 and the two are distributed at intervals along the same straight line; the first connecting plate 3 is provided with an elastic winding device 6, and the pull line of the elastic winding device 6 is connected to the mounting platform 5-3; when the detection mechanism 5 moves down, the elastic winding device 6 can automatically pull the detection mechanism 5 to reset through the pull line. The mounting platform 5-3 is also provided with a pull rope 7 for pulling down the detection mechanism 5.

[0020] Furthermore, each slide rod 1 adopts a segmented telescopic design, including a first slide rod 1-1 and a second slide rod 1-2. The second slide rod 1-2 is slidably sleeved inside the first slide rod 1-1, and the total length of the slide rod 1 can be adjusted according to the height of the container. The upper end of the first slide rod 1-1 is provided with a hook 2. The section of the first slide rod 1-1 near the hook 2 is provided with a first connecting plate 3, and the lower section of the second slide rod 1-2 away from the hook 2 is provided with a second connecting plate 4. A limiting ring is protruding on the inner ring wall of the lower section of the first slide rod 1-1, and a retaining edge that cooperates with the limiting ring is provided on the upper end face of the second slide rod 1-2. When the second slide rod 1-2 is pulled out from inside the first slide rod 1-1 to its maximum length, the retaining edge and the limiting ring abut against each other to prevent the second slide rod 1-2 from falling out of the first slide rod 1-1.

[0021] Furthermore, the hook 2 is a downward-opening C-shape. One side of the C-shaped hook 2 is fixed to the top of the first slide bar 1-1, and the other side has a short horizontal section at the end. The height of the C-shaped hook 2 is set such that when the hook 2 is attached to the top edge of the container being inspected and the inspection mechanism 5 is in the initial position, the initial height of the inspection probe 5-4 and the sizing sponge 5-5 is not lower than the highest point of the weld of the container being inspected, ensuring that the inspection mechanism 5 moves down to inspect from the top of the weld.

[0022] Furthermore, the sliding sleeve 5-1 includes a cylindrical body 5-1.1. Three radial through grooves are spaced apart on the cylindrical wall of the body 5-1.1. Rollers 5-1.2 are movably installed in each through groove. The rollers 5-1.2 roll and fit against the outer ring wall of the sliding rod 1. A radially arranged rotating shaft 5-1.3 is rotatably installed at the center of the rollers 5-1.2. Radial blind grooves are opened on the cylindrical walls on both sides of the through grooves. The two ends of the rotating shaft 5-1.3 are slidably embedded in the blind grooves. A cover plate 5-1 is provided at the opening ends of the through grooves and blind grooves away from the outer ring wall of the sliding rod 1. 4. A spring 5-1.5 is provided between the cover plate 5-1.4 and the rotating shaft 5-1.3. The spring 5-1.5 applies adaptive radial pressure to the roller 5-1.2 through the rotating shaft 5-1.3, which allows the roller 5-1.2 to fit tightly against the wall of the slide rod 1. Even if the diameters of the first slide rod 1-1 and the second slide rod 1-2 are different and there is a transition at the joint, the spring 5-1.5 can adjust the extension of the roller 5-1.2 in real time to fit the surface of the two sections of the slide rod 1, so as to prevent the roller 5-1.2 from disengaging or the mechanism from shaking and jamming, and ensure the stable sliding of the detection mechanism 5.

[0023] Furthermore, each sliding sleeve 5-1 is provided with a limiting rod 5-1.6 on the side facing the extension direction of the hook 2. When the hook 2 is attached to the top edge of the container being inspected, the free end of the limiting rod 5-1.6 abuts against the side wall of the container being inspected, and the two work together to form a triangular support structure to limit the tilt of the sliding rod 1. The free end of the limiting rod 5-1.6 is provided with a silicone block to prevent the limiting rod 5-1.6 from making hard contact with the container body and causing scratches on the surface of the container body, while improving the anti-slip effect when abutting.

[0024] Furthermore, a telescopic component 5-6 is provided between the detection probe 5-4 and the mounting platform 5-3, and between the application sponge 5-5 and the mounting platform 5-3. Each telescopic component 5-6 includes a guide cylinder 5-6.1 arranged perpendicularly to the mounting platform 5-3. A movable rod 5-6.2 is movably inserted inside the guide cylinder 5-6.1. One end of the two movable rods 5-6.2 is connected to the detection probe 5-4 and the application sponge 5-5 respectively, and the other end extends out of the guide cylinder 5-6.1 and is screwed with a limit nut 5-6.4 at both ends. A return spring 5-6.3 is sleeved on the outer periphery of each movable rod 5-6.2. One end of the return spring 5-6.3 abuts against the corresponding detection probe 5-4 or application sponge 5-5, and the other end abuts against the end face of the corresponding guide cylinder 5-6.1. The elastic force of the return spring 5-6.3 can keep the detection probe 5-4 and the application sponge 5-5 lightly pressing the surface of the box, which ensures the stability of the detection signal and avoids excessive compression that could cause wear on the components.

[0025] Furthermore, the mounting platform 5-3 includes a vertically connected sliding plate 5-3.1 and mounting plate 5-3.2. The detection probe 5-4 and the application sponge 5-5 are both mounted on the mounting plate 5-3.2. A horizontal first through hole is formed on the sliding plate 5-3.1, through which the connecting rod 5-2 slides. A vertical second through hole is formed on the sliding plate 5-3.1, communicating with the first through hole. A locking assembly 5-3.3 for fixing the relative position of the sliding plate 5-3.1 and the connecting rod 5-2 is provided in the second through hole. The locking assembly 5-3.3 includes an upper locking rod 5-3.3.1 and a lower locking rod 5-3.3.2. Both sides of the connecting rod 5-2 have notches adapted to the connecting rod 5-2. When locked, the notches of the upper and lower locking rods clamp the connecting rod 5-2 together to achieve stable fixation. The upper end face of the lower locking rod 5-3.3.2 has a valve stem 5-3.3.2.1 extending along its axial direction. The valve stem 5-3.3.2.1 passes through the second through hole of the upper locking rod 5-3.3.1 and the sliding plate 5-3.1 in sequence and has a threaded section at the end. An adjusting head 5-3.3.3 is screwed onto the threaded section. Tightening the adjusting head 5-3.3.3 can drive the upper and lower locking rods to move closer to each other and clamp the connecting rod 5-2. Loosening the adjusting head 5-3.3.3 can release the lock.

[0026] Furthermore, on the side of the sliding plate 5-3.1 away from the mounting plate 5-3.2, there are upper connecting rings and lower connecting rings spaced apart along its height direction. The upper connecting ring is connected to the pull line, and the lower connecting ring is connected to the pull rope 7.

[0027] Working principle of this utility model: 1. Pre-adjustment and locking positioning: Tighten the adjusting head 5-3.3.3 of the upper locking assembly 5-3.3 on the sliding plate 5-3.1. The adjusting head 5-3.3.3 drives the upper locking rod 5-3.3.1 and the lower locking rod 5-3.3.2 to move closer to each other through the valve stem 5-3.3.2.1. The notches of the two rods clamp the connecting rod 5-2 together, thereby fixing the sliding plate 5-3.1 and the connecting rod 5-2 and preventing the mounting platform 5-3 from shifting horizontally during the testing process.

[0028] 2. Coupling agent preparation: Apply ultrasonic testing coupling agent evenly to the sponge 5-5 on the mounting plate 5-3.2 facing the container side, in preparation for signal coupling between the subsequent testing probe 5-4 and the weld.

[0029] 3. After the device is fixed, the C-shaped hooks 2 at the upper end of the two slide rods 1 are attached to the top edge of the container. After attachment, the free end (with silicone block) of the limiting rod 5-1.6 on the side of the slide sleeve 5-1 naturally abuts against the side wall of the container, forming a triangular support of "hook 2-limiting rod 5-1.6", which restricts the tilt of the slide rod 1 and ensures that the movement path of the detection mechanism 5 is parallel to the weld. According to the height of the weld of the container being inspected, the second slide rod 1-2 of the slide rod 1 is pulled out.

[0030] 4. Manual pull-down inspection: The operator holds the pull rope 7 below the sliding plate 5-3.1 of the mounting platform 5-3 on the ground and slowly pulls it down. The pull rope 7 drives the inspection mechanism 5 (sliding sleeve 5-1 + connecting rod 5-2 + mounting platform 5-3) to move vertically down along the sliding rod 1. During the downward movement: the sponge 5-5 first adheres to the side wall of the container, and the coupling agent is evenly applied to the surface of the container. The inspection probe 5-4 above follows synchronously and adheres to the surface of the container coated with coupling agent, collecting the internal defect signals of the weld in real time (such as cracks, lack of fusion, etc.). At the same time, the roller 5-1.2 inside the sliding sleeve 5-1, under the thrust of the spring 5-1.5, always adaptively adheres to the outer wall of the sliding rod 1 (even if the diameters of the first sliding rod 1-1 and the second sliding rod 1-2 are different, it can still transition smoothly), ensuring that the downward movement of the inspection mechanism 5 is smooth and without jamming, further ensuring the continuity and accuracy of the inspection signal.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A container weld defect detection device, characterized in that, It includes two parallel and spaced sliding rods, each with a hook at its upper end. The upper sections of the two sliding rods near the hooks are fixedly connected by a first connecting plate, and the lower sections away from the hooks are fixedly connected by a second connecting plate. A detection mechanism is slidably sleeved on the two sliding rods between the first and second connecting plates. The detection mechanism includes a sliding sleeve respectively fitted onto two sliding rods, a connecting rod fixed between the two sliding sleeves, and a mounting platform on the connecting rod; a detection probe and an application sponge are provided on the side of the mounting platform facing the extension direction of the hook, the detection probe is located above the application sponge and the two are distributed at intervals along the same straight line; The first connecting plate is equipped with an elastic cable reel, and the cable of the elastic cable reel is connected to the mounting platform; The mounting platform is also equipped with a pull rope for pulling down the testing mechanism.

2. The container weld defect detection device according to claim 1, characterized in that, Each of the slide rods includes a first slide rod and a second slide rod. The second slide rod is slidably sleeved inside the first slide rod. The upper end of the first slide rod is provided with the hook. The first connecting plate is provided on the section of the first slide rod near the hook. The second connecting plate is provided on the lower section of the second slide rod away from the hook. A limiting ring is protruding on the inner ring wall of the lower section of the first slide rod, and a stop edge that cooperates with the limiting ring is provided on the upper end face of the second slide rod.

3. The container weld defect detection device according to claim 2, characterized in that, The hook is C-shaped with a downward opening. One side of the C-shaped hook is fixed to the top of the first slide bar, and the other side has a short horizontal section at the end. The height of the C-shaped hook is set such that when it is hooked on the top edge of the container being inspected and the inspection mechanism is in the initial position, the initial height of the inspection probe and the smearing sponge is not lower than the highest point of the weld of the container being inspected.

4. The container weld defect detection device according to claim 1, characterized in that, The sliding sleeve includes a cylindrical body, and at least three radial through grooves are spaced apart on the cylindrical wall of the body. Each through groove is equipped with a roller, which rolls and fits against the outer ring wall of the sliding rod. The roller has a radially arranged rotating shaft at its center, and radial blind grooves are opened on both sides of the cylinder wall of the through groove. The two ends of the rotating shaft are slidably embedded in the blind grooves. The open ends of the through groove and the blind groove away from the outer ring wall of the slide rod are provided with a cover plate, and a spring is provided between the cover plate and the rotating shaft.

5. The container weld defect detection device according to claim 1, characterized in that, Each of the sliding sleeves is provided with a limiting rod on the side facing the extension direction of the hook. When the hook is attached to the top edge of the container being inspected, the free end of the limiting rod abuts against the side wall of the container being inspected, and the two cooperate to limit the tilt of the sliding rod; the free end of the limiting rod is provided with a silicone block.

6. The container weld defect detection device according to claim 1, characterized in that, A telescopic assembly is provided between the detection probe and the mounting platform, and between the application sponge and the mounting platform. Each telescopic assembly includes a guide cylinder arranged perpendicular to the mounting platform. A movable rod is movably inserted inside the guide cylinder. One end of the two movable rods is connected to the detection probe and the application sponge, respectively, and the other end extends out of the guide cylinder and is screwed with a limit nut. A spring is sleeved on the outer periphery of each movable rod. One end of the spring abuts against the corresponding detection probe or application sponge, and the other end abuts against the end face of the corresponding guide cylinder.

7. The container weld defect detection device according to claim 1 or 6, characterized in that, The mounting platform includes a vertically connected sliding plate and a mounting plate. The detection probe and the application sponge are both mounted on the mounting plate. A horizontal first through hole is provided on the sliding plate, and the connecting rod slides through the first through hole. The sliding plate has a vertical second through hole, which communicates with the first through hole. The second through hole is provided with a locking component for fixing the relative position of the sliding plate and the connecting rod. The locking assembly includes an upper locking rod and a lower locking rod, both of which have notches for adapting to the connecting rod on both sides of the rod segment corresponding to the connecting rod; The upper end face of the lower locking rod has a valve stem extending along its axial direction. The valve stem passes through the second through hole of the upper locking rod and the sliding plate in sequence and has a threaded section at the end. An adjusting head is screwed onto the threaded section.

8. The container weld defect detection device according to claim 7, characterized in that, The sliding plate has an upper connecting ring and a lower connecting ring spaced apart along its height on the side away from the mounting plate. The upper connecting ring is connected to the pull line, and the lower connecting ring is connected to the pull rope.

9. The container weld defect detection device according to claim 1, characterized in that, The detection probe is an ultrasonic angle probe.

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