Assembled chain ring, length-adjustable chain type limiting plate and nondestructive testing guiding system

Abstract

The utility model relates to nondestructive testing field especially is a kind of chain limit plate and nondestructive testing guiding system with length-adjustable chain that can be assembled, wherein, a kind of chain that can be assembled, including connecting plate (21), both ends of the connecting plate (21) are fixed with the riser (22) that can be elastically deformed when being stressed, and automatically reset after unloading, the riser (22) is respectively equipped with connecting hole (221) and connecting shaft (222) along length direction both ends. The utility model has the advantages of simple structure, low manufacturing cost and strong adaptability. Specifically, the base is guided by setting chain, which effectively avoids the problems of unstable precision and operation fatigue caused by manual holding detection deviation, significantly reduces the operation difficulty and technical threshold, and has great market promotion value.

Description

Technical Field

[0001] This utility model relates to the field of nondestructive testing, and in particular to an assemblable chain link, an adjustable length chain limit plate, and a nondestructive testing guidance system. Background Technology

[0002] Weld inspection is a crucial link in modern industrial quality control systems, specifically referring to a set of techniques that utilize a series of non-destructive or minimal-destructive methods to comprehensively evaluate welded joints. Its core objective is to identify various defects (such as cracks, porosity, lack of fusion, and slag inclusions) inside and on the surface of the weld, measure key geometric dimensions (penetration depth, reinforcement height, misalignment, etc.), and determine whether it meets the requirements for structural integrity, mechanical properties, and service safety according to stringent standards. The five traditional non-destructive testing (NDT) methods form the foundation: Visual inspection (VT) is used for rapid screening of surface defects; Radiographic testing (RT) uses the penetrating power of X / γ rays to visually present two-dimensional images of internal defects; Ultrasonic testing (UT), especially advanced phased array (PAUT) and time-of-flight diffraction (TOFD) techniques, can accurately locate deep defects and quantify their dimensions, particularly suitable for thick-walled structures; Magnetic particle testing (MT) has high sensitivity for surface and near-surface cracks in ferromagnetic materials; and Penetrant testing (PT) effectively detects surface opening defects in non-porous materials.

[0003] In existing non-destructive testing operations, operators need to hold the testing device and rotate it around the circumference of the pipe. However, the stability of manual control is limited: the device is prone to lateral sliding or displacement due to gravity and the curvature of the curved pipe wall, causing the scanning trajectory of the testing probe to deviate from the predetermined path, resulting in blind spots or data distortion, which significantly reduces the accuracy of defect identification.

[0004] Therefore, those skilled in the art are dedicated to developing an assembly chain link that can assist in positioning and guidance, a chain limit plate with adjustable length, and a non-destructive testing guidance system. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide an assemblable chain link, an adjustable length chain limit plate and a non-destructive testing guide system.

[0006] To achieve the above objectives, this utility model provides an assemblable chain link, including a connecting plate. Both ends of the connecting plate are fixedly connected to vertical plates that can undergo elastic deformation under stress and automatically reset after stress is released. The vertical plates are provided with connecting holes and connecting shafts at both ends along the length direction.

[0007] Preferably, the upright plate has a first clearance groove at the connecting hole on the side away from the connecting plate; and a second clearance groove at the connecting shaft on the side of the upright plate closer to the connecting plate.

[0008] Preferably, both the first and second clearance grooves are configured as circular grooves.

[0009] This utility model also provides a chain-type limiting plate with adjustable length, including a plurality of assemblable chain links as described above, wherein the connecting shaft of the latter assemblable chain link is connected to the connecting hole of the former assemblable chain link.

[0010] Preferably, several of the assembled chain links together constitute a chain, and the two ends of the chain are respectively provided with a first bent plate and a second bent plate.

[0011] Preferably, the first curved plate is provided with a quick-release opening, which includes a first through hole and a clearance notch.

[0012] Preferably, the second curved plate is provided with a second through hole, and a tightening bolt is provided in the second through hole. The end of the tightening bolt extends outward beyond the first through hole, and the diameter of its rod is less than or equal to the clearance notch.

[0013] Preferably, the second bent plate is provided with a tightening nut on the side away from the first bent plate, and the tightening nut is threadedly connected to the tightening bolt.

[0014] This utility model also provides a non-destructive testing guidance system, including a chain-type limiting plate with adjustable length as described above, and a base, wherein the side wall of the base abuts against the side wall of the chain.

[0015] Preferably, the base is provided with a detection probe and two sets of adsorption crawling mechanisms, both sets of adsorption crawling mechanisms including magnetic components and bearings.

[0016] The beneficial effects of this utility model are: it has a simple structure, low manufacturing cost, and strong adaptability. Specifically, this application guides the base by setting a chain, which effectively avoids the problems of unstable accuracy and operator fatigue caused by manual hand-held detection deviation, significantly reduces the difficulty of operation and technical threshold, and has great market promotion value. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembleable chain link in a specific embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the assembly of the chain with the first and second bent plates in a specific embodiment of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure of an adjustable-length chain-type limiting plate in a specific embodiment of this utility model.

[0020] Figure 4This is a schematic diagram of the base structure in a specific embodiment of this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of the non-destructive testing guidance system in a specific embodiment of this utility model.

[0022] 11. Base; 11a. Third clearance groove; 12. Adsorption crawling mechanism; 121. Magnetic component; 121a. Magnetic wheel; 122. Bearing; 13. Connecting rod; 14. Detection probe; 21. Connecting plate; 22. Vertical plate; 221. Connecting hole; 222. Connecting shaft; 223. First clearance groove; 224. Second clearance groove; 31. Chain; 32. First bent plate; 32a. Quick release port; 32a1. First through hole; 32a2. Clearance notch; 33. Second bent plate; 33a. Second through hole; 33a1. Tightening bolt; 33a2. Tightening nut; 33a3. Anti-loss snap ring; 4. Welded pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figure 1-5 As shown, an assemblable chain link includes a connecting plate 21. The connecting plate 21 serves as a mounting base, with upright plates 22 fixed to both ends. These upright plates are capable of elastic deformation under stress and automatically reset after stress is released. In this embodiment, the upright plates 22 are made of engineering plastic. In other embodiments, the upright plates 22 can be made of other similar materials, such as metal spring sheets or rubber. The design of using engineering plastic, metal spring sheets, or rubber materials to make the upright plates 22 gives them a certain elastic deformation capability, facilitating disassembly in subsequent processes. Furthermore, the upright plates 22 have connecting holes 221 and connecting shafts 222 at both ends along their length, respectively. The locking function of adjacent assemblable chain links is achieved through their snap-fit ​​engagement.

[0025] Furthermore, the upright plate 22 has a first clearance groove 223 at the connecting hole 221 on the side away from the connecting plate 21, and a second clearance groove 224 at the connecting shaft 222 on the side of the upright plate 22 closer to the connecting plate 21. In this embodiment, both the first clearance groove 223 and the second clearance groove 224 are configured as circular grooves, and the diameter of the circular groove is the same as the height of the upright plate 22.

[0026] This utility model also provides a chain-type limiting plate with adjustable length, including several assemblable chain links as described above. In practical applications, the connecting shaft 222 of the subsequent assemblable chain link is connected to the connecting hole 221 of the preceding assemblable chain link to jointly form a chain 31. Specifically, the chain 31 in this embodiment consists of 13 assemblable chain links connected end to end. In other embodiments, other numbers of assemblable chain links can be selected according to the actual pipe diameter to assemble a chain 31 of the required length. Further, the two ends of the chain 31 are respectively provided with a first bending plate 32 and a second bending plate 33. The first bending plate 32 is provided with a quick-release opening 32a, which includes a first through hole 32a1 and a clearance notch 32a2. In this embodiment, the first through hole 32a1 is elliptical, and the first through hole 32a1 communicates with the outside through the clearance notch 32a2. Furthermore, the second curved plate 33 is also provided with a second through hole 33a, and a tightening bolt 33a1 is provided in the second through hole 33a. The end of the tightening bolt 33a1 extends outward beyond the first through hole 32a1, and the diameter of its rod is less than or equal to the clearance notch 32a2. This design allows the rod of the tightening bolt 33a1 to slide out of the first through hole 32a1 along the clearance notch 32a2, thereby completing the unlocking. In this embodiment, the second through hole 33a and the first through hole 32a1 have the same structure and are both configured as elliptical. The elliptical through hole design allows the tightening bolt 33a1 to have a large range of motion.

[0027] In this embodiment, a tightening nut 33a2, cooperating with the tightening bolt 33a1, is also provided on the side of the second bent plate 33 away from the first bent plate 32. In use, the first bent plate 32 and the second bent plate 33 can be tightened and loosened by rotating the tightening nut 33a2. Furthermore, an anti-loss spring 33a3 is also provided on the side of the tightening nut 33a2 away from the second bent plate 33 to prevent the tightening nut 33a2 from slipping out of the tightening bolt.

[0028] This utility model also provides a non-destructive testing guidance system, including the adjustable-length chain-type limiting plate and base 11 as described above, with the sidewall of base 11 abutting against the sidewall of chain 31. Specifically, base 11, as an installation foundation, has a square cross-section with one side open. This design maximizes weight reduction and material saving without compromising structural strength, and provides an installation foundation for subsequent components. In other embodiments, base 11 can be set to other shapes, such as circular, elliptical, or other irregular shapes, according to actual needs. Further, base 11 is provided with a detection probe 14 and two sets of adsorption crawling mechanisms 12. Both sets of adsorption crawling mechanisms 12 include a magnetic component 121 and a bearing 122. By setting the adsorption crawling mechanisms 12, base 11 can be adsorbed onto the welded pipe 4 while also moving on the welded pipe 4. Specifically, the base 11 has axially extending third clearance grooves 11a on both opposite sides of its bottom. A connecting rod 13 is installed within each third clearance groove 11a. Magnetic components 121 and bearings 122 are spaced apart and pass through the connecting rod 13, providing a mounting base for the magnetic components 121 and bearings 122. In practice, since the welded pipe 4 to be inspected is mostly made of metal, the magnetic component 121 can provide magnetic force to attract the base 11 onto the welded pipe 4. The bearing 122 converts the sliding friction of the base 11 into rolling friction, thereby reducing friction and facilitating the movement of the base 11. Similarly, in other embodiments, the magnetic component 121 can be replaced with other shapes or other similar products, and the bearing 122 can be replaced with rollers, rotating wheels, or other similar products.

[0029] In this embodiment, the magnetic component 121 is a magnetic wheel 121a, and the outer diameter of the magnetic wheel 121a is smaller than the outer diameter of the bearing 122. The main purpose of setting the magnetic component 121 in a wheel shape is to provide stronger radial magnetic force while also facilitating the movement of the base 11. Specifically, multiple tests have shown that the optimal effect is achieved when the difference between the outer diameters of the magnetic wheel 121a and the bearing 122 is 0.5 mm. If the difference is too small, the magnetic force of the magnetic wheel 121a will be too large, and the attraction force will be too strong, causing the base 11 to be obstructed from moving. If the difference is too large, the magnetic force of the magnetic wheel 121a will be too small, and the attraction force will be insufficient, causing the base 11 to easily detach.

[0030] In use, select an appropriate number of assemblable chain links according to the diameter of the pipe to be inspected, and splice the assemblable chain links end to end to form a chain 31. Wrap the spliced ​​chain 31 around the welded pipe 4 and rotate the tightening nut 33a2. Driven by the tightening nut 33a2, the first bent plate 32 gradually moves closer to the second bent plate 33 and tightens. After the chain 31 is tightened, attach the base 11 to the welded pipe 4 and make the side wall of the base 11 abut against the side wall of the chain 31. At this time, pushing the base 11 to slide along the side wall of the chain 31 can achieve offset-free detection.

[0031] This application features a simple structure, low manufacturing cost, and strong adaptability. Specifically, it guides the base 11 using a chain 31, effectively avoiding instability in accuracy and operator fatigue caused by manual hand-held detection, significantly reducing operational difficulty and technical barriers, and possessing significant market potential. Furthermore, this application exhibits strong adaptability; stable adsorption can be achieved as long as the outer diameter of the welded tube 4 is larger than the opening of the base 11, making it widely applicable.

[0032] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An assemblable chain link, characterized by: Includes a connecting plate (21), both ends of which are fixedly connected to a vertical plate (22) that can undergo elastic deformation when subjected to force and automatically reset after the force is released. The vertical plate (22) is provided with a connecting hole (221) and a connecting shaft (222) at both ends along the length direction.

2. The assemblable chain link of claim 1, wherein: The upright plate (22) is provided with a first clearance groove (223) at the connection hole (221) on the side away from the connecting plate (21); The upright plate (22) has a second clearance groove (224) on the side near the connecting plate (21) at the connecting shaft (222).

3. The assemblable chain link of claim 2, wherein: The first clearance groove (223) and the second clearance groove (224) are both configured as circular grooves.

4. A chain-type limiting plate with adjustable length, characterized in that: It includes a plurality of assemblable links as described in any one of claims 1-3, wherein the connecting shaft (222) of the subsequent assemblable link is connected to the connecting hole (221) of the preceding assemblable link.

5. The length adjustable chain stopper as set forth in claim 4, wherein: Several of the assembled chain links together constitute a chain (31), and the two ends of the chain (31) are respectively provided with a first bent plate (32) and a second bent plate (33).

6. The length adjustable chain stopper as set forth in claim 5, wherein: The first bent plate (32) is provided with a quick release opening (32a), which includes a first through hole (32a1) and a clearance notch (32a2).

7. The length adjustable chain stop as set forth in claim 6, wherein: The second bent plate (33) is provided with a second through hole (33a), and a tightening bolt (33a1) is provided in the second through hole (33a). The end of the tightening bolt (33a1) extends outward from the first through hole (32a1), and the diameter of its rod is less than or equal to the clearance notch (32a2).

8. The length adjustable chain stopper as set forth in claim 7, wherein: The second bent plate (33) is provided with a tightening nut (33a2) on the side away from the first bent plate (32), and the tightening nut (33a2) is threadedly connected to the tightening bolt (33a1).

9. A non-destructive testing guidance system comprising a chainable length limiting plate as claimed in any one of claims 4 to 8, characterised in that: It also includes a base (11), the sidewall of which abuts against the sidewall of the chain (31).

10. The non-destructive inspection guidance system of claim 9, wherein: The base (11) is provided with a detection probe (14) and two sets of adsorption crawling mechanisms (12), both sets of adsorption crawling mechanisms (12) include a magnetic component (121) and a bearing (122).

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