Simple container corner fitting measuring device

Abstract

The application relates to a simple container corner fitting measuring device, and belongs to the technical field of measuring tools, which comprises a measuring plate, one side of the measuring plate in the width direction is provided with a stepped surface, each step of the stepped surface on the measuring plate is provided with a scale groove, and the scale groove is used for indicating the measuring plate width corresponding to each step of the stepped surface, the measuring plate is inserted into an ISO hole on a corner fitting in a plug-fit mode, and the measuring plate is abutted against the inner wall of the ISO hole in the width direction to realize ISO hole width measurement. The application avoids the subjectivity and limitation of manual naked-eye observation of ISO hole deformation on the corner fitting, and has the effects of improving the measurement accuracy and efficiency.

Description

Technical Field

[0001] This application relates to the field of measuring tools, and in particular to a simple container corner fitting measuring device. Background Technology

[0002] With the rapid development of the shipping industry, the volume of container transport has continued to rise. The number and size of container ships in operation are also increasing. However, at the same time, container loss at sea is becoming increasingly common, resulting not only in huge economic losses but also potentially triggering a series of safety hazards. In existing technologies, to ensure the stability of containers during transportation, corner fittings are typically installed at the eight corners of each container for secure connection.

[0003] like Figure 1 As shown, when containers are stacked, they can be securely connected by using upper corner fittings with ISO holes on the lower container and lower corner fittings with container locking mechanisms on the upper container. When the container is subjected to lateral forces (such as ship swaying or being blown by wind), the corner fittings will bear the tension of the locking device, ensuring that the container remains in place and in a safe state. However, over long-term use, the width of the ISO holes in the corner fittings is prone to change due to repeated stress. This can directly lead to loosening of the corner fitting connection, significantly increasing the risk of the container tipping over, and consequently causing personal injury and cargo loss. Therefore, before connecting the corner fittings, it is necessary to strictly test the width variation of the ISO holes.

[0004] Currently, the detection of ISO hole width variations in corner fittings mainly relies on manual visual inspection. However, manual observation has significant drawbacks in practical applications: on the one hand, human visual judgment is subjective and limited, making it difficult to accurately identify minute deformations and prone to misjudgment; on the other hand, manual inspection is inefficient and time-consuming, failing to meet the growing inspection needs of container transport and making it difficult to fully guarantee the safety of container transport. Utility Model Content

[0005] To address the problems of inaccurate results and low efficiency in existing methods that rely on manual detection of ISO hole width changes, this application provides a simple container corner fitting measuring device.

[0006] This application provides a simple container corner fitting measuring device, which adopts the following technical solution: A simple container corner fitting measuring device includes a measuring plate, and a stepped surface is provided on one side of the measuring plate in the width direction. Each step of the measuring plate is provided with a scale groove, and the scale groove is used to indicate the width of the measuring plate corresponding to each step of the stepped surface. The measuring plate forms an insertion fit with the ISO hole on the corner fitting, and the measuring plate abuts against its inner wall along the width direction of the ISO hole to realize the measurement of the width of the ISO hole.

[0007] By adopting the above technical solution, the stepped surface on one side of the measuring plate in the width direction and the scale groove corresponding to each step can intuitively display the width of the measuring plate at different steps. During measurement, the measuring plate is made to abut against its inner wall along the width direction of the ISO hole, and the width of the ISO hole can be accurately measured with the help of the stepped surface and scale groove. This allows for the determination of whether the width variation of the ISO hole is within the allowable range. Overall, this avoids the subjectivity and limitations of manual visual observation, improves the accuracy of measurement, and also enhances measurement efficiency. It can better adapt to the increasing demand for container transportation inspection, effectively reduce the risk of containers tipping over due to loose corner fittings, and ensure the safety of container transportation.

[0008] Preferably, a hazard level label is provided on the measuring plate next to the scale groove.

[0009] By adopting the above technical solution and setting up hazard level markings next to the scale groove, inspectors can quickly identify the safety status (such as pass, warning, or disabled) corresponding to the current ISO hole width when reading measurement data. This eliminates the need for additional reference to standard tables, reduces intermediate steps in the inspection process, lowers the risk of human error, and is suitable for rapid on-site screening of non-conforming corner parts. It improves the convenience and safety of inspection work, ensures that non-conforming corner parts are identified in a timely manner, and avoids safety accidents caused by loose connections.

[0010] Preferably, a guide ramp is provided between any two adjacent steps of the stepped surface.

[0011] By adopting the above technical solution, guide ramps are set between adjacent steps of the stepped surface, allowing the measuring plate to smoothly transition between different stepped surfaces when inserted into the ISO hole, reducing insertion and extraction resistance and wear, and lowering the possibility of measurement errors or tool damage caused by forced insertion. At the same time, the guide ramps, as a transition zone between two adjacent standard scales, enable the measuring device to accurately identify whether the width change of the ISO hole is in a critical state. It can not only determine whether it is qualified or unqualified, but also assess intermediate levels such as being close to exceeding the standard. While maintaining the simplicity of the device structure, it improves the objectivity of the test results and the decision-making guidance significance, balancing the practicality of the tool with the complexity of actual testing needs.

[0012] Preferably, the measuring plate has standard parts at both ends of the stepped surface, and the distance between the two standard parts is the standard length of the ISO hole.

[0013] By adopting the above technical solution, standard parts are set at both ends of the stepped surface on the measuring plate, and the distance between the two standard parts is the standard length of the ISO hole. This allows the device to simultaneously detect whether the length dimension conforms to the standard after measuring the width of the ISO hole on the corner piece. During measurement, the two standard parts are inserted into the ISO hole simultaneously, so that the two measuring parts abut against the inner wall of the ISO hole along the length direction. By observing the depth of the standard parts inserted into the ISO hole, it is possible to quickly determine whether there is deformation or dimensional deviation in the length direction of the ISO hole. This achieves integrated detection of width and length, eliminating the need to carry additional special length measuring tools, simplifying the detection process, and improving the comprehensiveness and efficiency of the detection.

[0014] Preferably, a plug-in portion is provided on one side of the measuring plate along its length, and the plug-in portion forms a plug-in fit with the sidewall of the ISO hole to realize the measurement of the ISO hole plate thickness.

[0015] By adopting the above technical solution, a plug-in part is opened on one side of the measuring plate along its length. The plug-in part can be used to form a plug-in fit with the side wall of the ISO hole to measure whether the thickness of the hole plate is qualified. This gives the device the ability to measure both width and plate thickness, eliminating the need for a separate tool for plate thickness detection, thereby reducing detection costs and further improving detection efficiency and practicality.

[0016] Preferably, a first protrusion is provided on the side of the measuring plate away from the plug-in portion, and a second protrusion is provided on the plug-in portion, which is parallel to the first protrusion. The first protrusion and the second protrusion are respectively located on both sides of the ISO hole, and both the first protrusion and the second protrusion form an abutment fit with the corner piece top plate to realize the detection of the flatness of the corner piece top plate.

[0017] By adopting the above technical solution, during measurement, the first protrusion and the second protrusion are respectively placed against the top plate of the corner piece on both sides of the ISO hole. By observing whether the top plate between the first protrusion and the second protrusion is in contact with the measuring plate, the flatness of the corner piece top plate can be quickly determined. This achieves a three-in-one inspection of width, plate thickness, and flatness, eliminating the need for additional flatness inspection tools such as a straightedge. This greatly simplifies the inspection process, improves the comprehensiveness and convenience of the inspection, ensures that the corner piece can be evenly stressed during the connection process, and guarantees the stability of the connection.

[0018] Preferably, the width measurement range of the measuring plate is adjustable.

[0019] By adopting the above technical solution, the width measurement range of the measuring plate is adjustable, enabling the device to adapt to ISO holes of container corner fittings of different specifications and standards. This breaks the applicability limitations of fixed-size measuring devices and improves the versatility and reusability of the device.

[0020] Preferably, the measuring plate includes a first plate and a second plate that are interlocked with each other, and the stepped surface and the scale groove are both disposed on the first plate. A positioning screw is fixedly connected to the first plate, and a plurality of adjustment holes are opened on the second plate along the width direction of the measuring plate. The positioning screw passes through the adjustment holes and is threadedly connected to a fixing nut.

[0021] By adopting the above technical solution, the first plate and the second plate can be detached and adjusted by using positioning screws and fixing nuts. This makes the adjustment of the measurement range of the measuring plate width simple and reliable. The adjustment method has strong stability and the width dimension accuracy of the measuring plate after adjustment is high, which can ensure the accuracy of the measurement results.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. This device provides an objective and quantitative standard for measuring the width of ISO holes in corner fittings by using a stepped surface with precise graduated grooves. In use, the measuring plate directly abuts against the inner wall of the ISO hole, which can accurately identify minute width changes caused by wear or deformation, completely avoiding the subjectivity and limitations of traditional manual visual observation. This makes the determination of whether the ISO hole is qualified accurate and reliable, and can promptly identify corner fittings with the risk of loose connections. This significantly reduces the risk of unstable container stacking or even overturning at sea caused by corner fitting failure, providing a solid technical guarantee for the safety of personnel and cargo. 2. This device integrates the detection functions of width, length, plate thickness, and even the flatness of the corner piece top plate into a simple measuring plate. Inspectors no longer need to carry and frequently change multiple special tools; they can complete multiple checks on the key dimensions and shapes of the corner pieces using only the measuring plate. This integrated design greatly simplifies the inspection process, shortens the inspection time per piece, and can better adapt to the needs of large-volume, fast-paced container inspection in scenarios such as ports and yards, significantly improving the efficiency and comprehensiveness of the overall inspection work. 3. By adding hazard level markings (such as pass, warning, and prohibited) next to the scale, the test results are clear at a glance, allowing staff to make quick decisions without referring to complex tables. This facilitates immediate screening and handling of non-conforming corner pieces on-site. At the same time, the stepped guide slope design not only makes insertion and removal smoother and protects the tools, but also helps to determine the hole width at the standard critical state, providing a more detailed basis for maintenance decisions (such as strengthening inspections and planned replacement). In addition, the adjustable splicing design of the first and second plates allows the device to adapt to corner pieces of different specifications, enhancing the versatility and economy of the tool. Attached Figure Description

[0023] Figure 1 This is an isometric schematic diagram of the ISO hole structure on the corner piece, which is the main feature of the background technology. Figure 2 This is an isometric schematic diagram (measuring the width of the ISO hole) that mainly illustrates the stepped surface structure in Embodiment 1 of this application. Figure 3 This is an isometric schematic diagram (measuring the length of the ISO hole) that mainly illustrates the structure of the standard part in Embodiment 1 of this application. Figure 4 This is an isometric schematic diagram of the main plug structure in Embodiment 1 of this application (measuring the plate thickness of the ISO hole). Figure 5 This is an isometric schematic diagram of the structure of the first and second protrusions in Embodiment 1 of this application (measuring the flatness of the top plate of the ISO hole). Figure 6 This is an isometric schematic diagram of the main measuring plate structure in Embodiment 2 of this application; Figure 7 This is an exploded view of the connection relationship between the first plate and the second plate in Embodiment 2 of this application.

[0024] Reference numerals: 1. Measuring plate; 11. First plate; 111. Positioning screw; 112. Fixing nut; 12. Second plate; 121. Adjustment hole; 2. Stepped surface; 21. Guide slope; 3. Scale groove; 4. Hazard level indicator; 5. Standard part; 51. Standard scale; 52. Position guide; 6. Plug-in part; 61. First plug-in groove; 62. Second plug-in groove; 621. Second protrusion; 631. Open scale; 632. Acceptance level indicator; 7. First protrusion; 71. Protruding scale; 72. Direction guide. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.

[0026] Embodiment 1 of this application discloses a simple container corner fitting measuring device.

[0027] Reference Figure 1 and Figure 2 A simple container corner fitting measuring device includes a measuring plate 1, and a stepped surface 2 is provided on one side of the measuring plate 1 in the width direction. Each step of the stepped surface 2 on the measuring plate 1 is provided with a scale groove 3, and the scale groove 3 is used to indicate the width of the measuring plate 1 corresponding to each step of the stepped surface 2. In this embodiment, the stepped surface 2 has six steps, and the scale groove 3 (i.e., the corresponding width of the measuring plate 1) of the stepped surface 2 is in the range of 63-68mm. A hazard level label 4 is provided on the measuring plate 1 next to the scale groove 3. In this embodiment, the hazard level label 4 includes three levels: pass, warning, and prohibition (represented by "!", "!!", and "!!!" respectively), and the scale groove 3 (i.e., the width of the measuring plate 1) corresponding to the three levels of the hazard level label 4 is 66mm, 67mm, and 68mm respectively. The measuring plate 1 forms an insertion fit with the ISO hole on the corner fitting, and the measuring plate 1 abuts against its inner wall along the width direction of the ISO hole to measure the width of the ISO hole.

[0028] In practical use, the inspector inserts the measuring plate 1 into the ISO hole of the corner piece to be tested, ensuring that the measuring plate 1 is in close contact with the inner wall along the width direction of the ISO hole. At this time, the inspector observes the width value of the measuring plate 1 displayed on the scale groove 3, and simultaneously judges the current width status of the ISO hole according to the hazard level label 4 on the side: if the value is 66mm or less, it means that the ISO hole width meets the standard; if the value is 66-67mm, it means that the width of the ISO hole is close to the critical value and needs to be checked more closely; if the value reaches 67-68mm or more, it means that the hole width has exceeded the safe range and the corner piece needs to be replaced immediately. This design avoids the subjectivity and limitations of manual visual observation, improves the accuracy and efficiency of measurement, and avoids the tedious steps of manually comparing standard tables, significantly improving the efficiency of on-site inspection and the accuracy of decision-making.

[0029] Reference Figure 2A guide ramp 21 is provided between any two adjacent steps of the stepped surface 2. In actual use, when the measuring plate 1 is inserted into the ISO hole, the guide ramp 21 can guide the measuring plate 1 to smoothly transition between different steps, reduce the resistance during insertion and removal, and avoid measurement errors or tool damage caused by forced insertion. At the same time, as a transition area between two adjacent scale levels, the guide ramp 21 can help the tester to more accurately identify whether the ISO hole width is in a critical state. For example, when the measured value is close to 66mm or 67mm, the presence of the guide ramp 21 can help determine whether the hole width is just up to standard, close to the warning value, or has entered the prohibited range. This detailed judgment method not only improves the objectivity of the test results, but also provides a more reliable basis for subsequent maintenance decisions (such as increasing the inspection frequency or planning to replace corner pieces), further enhancing the practicality and accuracy of the device.

[0030] Reference Figure 3 The measuring plate 1 has a standard part 5 integrally formed at both ends of the stepped surface 2, and the distance between the two standard parts 5 is the standard length of the ISO hole. In this embodiment, the two standard parts 5 are provided with a standard scale 51 (127mm) for indicating the standard length of the ISO hole and a position guide 52 for indicating the position of the standard part 5. In actual use, after measuring the width of the ISO hole, the inspector can also use the two standard parts 5 to measure whether the length of the ISO hole meets the standard. During measurement, the inspector inserts the two standard parts 5 into the ISO hole at the same time, so that the two standard parts 5 abut against the inner wall of the ISO hole along the length direction of the ISO hole, and observes the insertion depth of the standard parts 5. If the standard part 5 just abuts against the top of the ISO hole and cannot be inserted, it means that the length is qualified. If the standard part 5 can be inserted into the ISO hole, it indicates that the ISO hole has deformation or dimensional deviation in the length direction. This integrated detection method of width and length does not require carrying a special length measuring tool, which greatly simplifies the detection process. It is especially suitable for scenarios that require rapid screening of a large number of corner pieces, and significantly improves detection efficiency and comprehensiveness.

[0031] Reference Figure 4 The measuring plate 1 has a plug-in portion 6 on one side along its length, and the plug-in portion 6 forms a plug-in fit with the side wall of the ISO hole to realize the measurement of the ISO hole plate thickness. In this embodiment, the plug-in portion 6 includes a first plug-in groove 61 and a second plug-in groove 62, and both the first plug-in groove 61 and the second plug-in groove 62 are arranged in a "U" shape. The opening directions of the first plug-in groove 61 and the second plug-in groove 62 are opposite, and the opening of the first plug-in groove 61 (23mm) is smaller than the opening of the second plug-in groove 62 (25mm). The sides of the first plug-in groove 61 and the second plug-in groove 62 are provided with an opening scale 631 for indicating the size of their openings and a pass grade mark 632 for indicating the pass status.

[0032] In practical use, the inspector first uses the second insertion slot 62 (opening size 25mm) in the insertion part 6 to form an insertion fit with the side wall of the ISO hole and observes its insertion. If the second insertion slot 62 just abuts against the side wall of the ISO hole and cannot be inserted, it means that the plate thickness meets the standard. If the second insertion slot 62 can be inserted directly, the first insertion slot 61 (opening size 23mm) needs to be replaced and the measurement is repeated. At this time, if the first insertion slot 61 just abuts against the side wall of the ISO hole and cannot be inserted, it means that the plate thickness is too thin and should be used with caution. If the first insertion slot 61 can be fully inserted, it means that the plate thickness is unqualified and needs to be replaced in time. This design enables the device to measure plate thickness, further improving the detection efficiency and practicality of the device. At the same time, the intuitive display of the opening scale 631 and the qualified grade mark 632 also avoids the subjectivity and error of manual judgment, ensuring the accuracy and reliability of the test results.

[0033] Reference Figure 5 The measuring plate 1 has a first protrusion 7 integrally formed on the side away from the insertion part 6, and the second insertion groove 62 has a second protrusion 621 integrally formed on the groove wall on the side away from the first protrusion 7, which is parallel to the first protrusion 7. The first protrusion 7 and the second protrusion 621 are located on both sides of the ISO hole, and both the first protrusion 7 and the second protrusion 621 form an abutment fit with the corner piece top plate to realize the detection of the flatness of the corner piece top plate. In the embodiment of this application, the first protrusion 7 and the second protrusion 621 are both provided with a protruding scale 71 (5mm) for indicating their protruding length and a direction guide symbol 72 for guiding the measurement direction.

[0034] In practical use, inspectors place the first protrusion 7 and the second protrusion 621 against the corner plate on both sides of the ISO hole. By observing whether the top plate between the first protrusion 7 and the second protrusion 621 contacts the surface of the measuring plate 1, the flatness of the corner plate can be quickly determined: if the top plate has no contact with the surface of the measuring plate 1, the flatness meets the standard; if there is partial contact or the first protrusion 7 and the second protrusion 621 cannot contact each other simultaneously, it indicates that the top plate is bent or deformed. This integrated design allows inspectors to complete the inspection of multiple key dimensions in one go, significantly improving on-site inspection efficiency. In addition, the setting of the protruding scale 71 and the direction guide 72 helps inspectors to more accurately locate the measurement position, further improving the reliability of the inspection results.

[0035] The implementation principle of Embodiment 1 of this application is as follows: By integrating a multi-dimensional measurement structure and combining it with an intuitive marking design, the device achieves efficient and accurate detection of key parameters of ISO holes in container corner fittings. The device uses a measuring plate 1 as the core carrier. Through the six-step surface 2 (corresponding to 63-68mm scale grooves 3) in the width direction, combined with the hazard level marking 4, it is inserted into the ISO hole and abuts against its inner wall in the width direction to quickly determine whether the hole width meets the standard, is close to the critical point, or needs to be disabled. The guide slope 21 optimizes the smoothness of insertion and removal and assists in the judgment of critical values. At the same time, with the help of the standard parts 5 at both ends of the measuring plate 1 (spacing of 127mm), it is inserted into the ISO hole and abuts against its inner wall in the length direction. The insertion depth is used to determine whether the hole length is qualified. Using the U-shaped first insertion slot 61 (opening size 23mm) and second insertion slot 62 (opening size 25mm) with opposite opening directions in the insertion part 6, they are sequentially inserted into the side wall of the ISO hole. The thickness of the plate is determined based on the insertion. Then, the first protrusion 7 and the second protrusion 621 (both with a protrusion length of 5mm) arranged in parallel on the measuring plate 1 abut against the top plates on both sides of the ISO hole. The flatness is determined based on the contact state between the top plate and the measuring plate 1. The whole system integrates the detection design of width, length, plate thickness and flatness, with clear scale, grade markings and guiding structure, avoiding the subjectivity and limitations of manual measurement, and realizing the rapid, comprehensive and accurate detection of key parameters of corner fittings.

[0036] This application also discloses a simple container corner fitting measuring device in embodiment two, which differs from embodiment one in that: Reference Figure 6 and Figure 7 The width measurement range of the measuring plate 1 is adjustable. The measuring plate 1 includes a first plate 11 and a second plate 12 that are interlocked with each other. The stepped surface 2, the scale groove 3 and the first insertion groove 61 are all provided on the first plate 11, and the first protrusion 7, the second insertion groove 62 and the second protrusion 621 are all provided on the second plate 12. The first plate 11 is fixedly connected to the positioning screw 111 by welding, and the second plate 12 is provided with a plurality of adjustment holes 121 along the width direction of the measuring plate 1. In this embodiment, two positioning screws 111 are provided at intervals along the length direction of the measuring plate 1, and the adjustment holes 121 are provided in two sets corresponding to the number and position of the positioning screws 111. Each set consists of three adjustment holes 121 that are equally spaced along the width direction of the measuring plate 1, and each positioning screw 111 passes through the adjustment hole 121 of the corresponding set and is threadedly connected to a fixing nut 112.

[0037] In practical use, inspectors can insert the positioning screw 111 into the appropriate positioning hole according to the specifications of the ISO hole on the corner piece, and fix it by tightening the fixing nut 112. This allows for flexible adjustment of the measurement range of the measuring plate 1 width. This adjustable design enables the device to adapt to ISO holes of different sizes, avoiding measurement errors or tool replacement requirements caused by differences in hole diameter. At the same time, the layout of the two sets of positioning screws 111 and the adjustment hole 121 further enhances the structural stability of the device, maintaining long-term reliable performance even under high-intensity and frequent use. In addition, this modular design reduces maintenance costs. When a component wears out, only the corresponding plate needs to be replaced instead of the entire tool, further improving economy and practicality.

[0038] The implementation principle of Embodiment 2 of this application is as follows: Based on the integrated detection of width, length, plate thickness, and flatness in Embodiment 1, the device achieves accurate detection of the compatibility of ISO holes of different specifications through modular disassembly and adjustable structural design. The device disassembles the measuring plate 1 into a first plate 11 and a second plate 12 that are interlocked with each other. The stepped surface 2, the scale groove 3, and the first insertion groove 61 are integrated into the first plate 11, and the first protrusion 7, the second insertion groove 62, and the second protrusion 621 are integrated into the second plate 12. With the help of two sets of positioning screws 111 (spaced apart along the length direction) welded on the first plate 11 and two sets of adjustment holes 121 (three in each set) opened along the width direction on the second plate 12, the device achieves accurate detection of the compatibility of ISO holes of different specifications through modular disassembly and adjustable structural design. With equidistant distribution, the testing personnel can select the corresponding adjustment hole 121 according to the specifications of the target ISO hole to allow the positioning screw 111 to pass through, and then tighten the fixing nut 112 to fix the first plate 11 and the second plate 12, thereby flexibly adjusting the width measurement range of the measuring plate 1 to adapt to the testing needs of ISO holes of different sizes. On the basis of achieving multi-dimensional integrated testing, the adjustable design avoids measurement errors and tool replacement caused by differences in hole diameter. The layout of the two sets of positioning screws 111 and adjustment holes 121 ensures structural stability, while modular disassembly reduces maintenance costs, ultimately achieving a unity of adaptability, stability, economy and comprehensive testing.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A simple container corner fitting measuring device, characterized in that: The measuring plate (1) includes a measuring plate (1) and a stepped surface (2) is provided on one side of the measuring plate (1) in the width direction. Each step of the stepped surface (2) on the measuring plate (1) is provided with a scale groove (3), and the scale groove (3) is used to indicate the width of the measuring plate (1) corresponding to each step of the stepped surface (2). The measuring plate (1) forms an insertion fit with the ISO hole on the corner piece, and the measuring plate (1) abuts against its inner wall along the width direction of the ISO hole to realize the measurement of the width of the ISO hole.

2. The simplified container corner fitting measuring device according to claim 1, characterized in that: The measuring plate (1) is provided with a hazard level label (4) next to the scale groove (3).

3. The simplified container corner fitting measuring device according to claim 1, characterized in that: A guide ramp (21) is provided between any two adjacent steps of the stepped surface (2).

4. The simplified container corner fitting measuring device according to claim 1, characterized in that: The measuring plate (1) has standard parts (5) at both ends of the stepped surface (2), and the distance between the two standard parts (5) is the standard length of the ISO hole.

5. A simple container corner fitting measuring device according to claim 1, characterized in that: The measuring plate (1) has a plug-in part (6) on one side along its length, and the plug-in part (6) and the side wall of the ISO hole form a plug-in fit to realize the measurement of the ISO hole plate thickness.

6. A simple container corner fitting measuring device according to claim 5, characterized in that: A first protrusion (7) is provided on the side of the measuring plate (1) away from the plug-in part (6), and a second protrusion (621) is provided on the plug-in part (6) parallel to the first protrusion (7). The first protrusion (7) and the second protrusion (621) are located on both sides of the ISO hole, and both the first protrusion (7) and the second protrusion (621) form an abutment fit with the corner piece top plate to realize the detection of the flatness of the corner piece top plate.

7. A simple container corner fitting measuring device according to claim 1, characterized in that: The width measurement range of the measuring plate (1) is adjustable.

8. A simple container corner fitting measuring device according to claim 1, characterized in that: The measuring plate (1) includes a first plate (11) and a second plate (12) that are interlocked with each other. The stepped surface (2) and the scale groove (3) are both set on the first plate (11). A positioning screw (111) is fixedly connected to the first plate (11). A plurality of adjustment holes (121) are opened on the second plate (12) along the width direction of the measuring plate (1). The positioning screw (111) passes through the adjustment hole (121) and is threadedly connected to a fixing nut (112).

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