Welding gage inspection device

Abstract

This invention discloses a welding inspection ruler inspection device, comprising a housing and a testing platform disposed within the housing. The testing platform detachably and centrally houses an angle parameter detection device, a height ruler indication error measurement device, a depth parameter detection device, a width ruler indication error measurement device, a gap ruler indication error measurement device, a surface roughness difference measurement device, and a vertical distance measurement device. This invention integrates numerous standard instruments onto the measuring platform, significantly reducing calibration preparation time, improving work efficiency, making the overall device easy to handle and carry, and ensuring the relatively fixed positions of each standard instrument, reducing errors introduced by human factors, shortening inspection time, and improving inspection accuracy.

Description

Technical Field

[0001] This invention relates to the field of measuring device technology, and more specifically to a welding inspection ruler inspection device. Background Technology

[0002] Welding inspection gauges are measuring instruments that use the principles of line marking and vernier measurement to inspect parameters such as weld width, height, weld gap, bevel angle, and undercut depth of welded parts. They are mainly composed of three parts: a main scale, a sliding scale, and a slant scale. They are suitable for measuring relevant data of products and components with high welding quality requirements, such as boilers and pressure vessels, and are an essential measuring tool for welders.

[0003] This measuring instrument is listed in the "Industrial Boiler Quality Grading Standard" (JB / DQ9004-87) issued by the Electrical Bureau of the Machinery Industry Commission. Its welding inspection content includes the inspection of materials, tools, equipment, processes, and finished product quality used throughout the entire production process, from design drawings to product manufacturing. This includes pre-welding inspection, in-process inspection during welding, and post-welding inspection of the finished product. It is a widely used measuring instrument of great importance for safe production. The comprehensive measuring device for welding inspection rulers is mainly used for the verification and calibration of welding inspection rulers, performing quantitative analysis and qualitative judgment of various measurement parameters of the welding inspection ruler, and carrying out value transfer.

[0004] Welding inspection gauges are classified into four structural types: Type I, Type II, Type III, and Type IV. Type III welding inspection gauges, such as... Figure 11 and Figure 12 As shown, the system includes a main ruler 103, a height ruler 101, a scale 102, an undercut depth ruler 105, and a multi-purpose ruler 104. The main ruler 103 has 45° notches on both sides. The height ruler 101 is slidable. When measuring the weld leg convexity / concaveness of the corner weld joint on a corner weld test plate, the two 45° notches are aligned with the two sides of the weld joint test piece, and the sliding height ruler 101 contacts the measuring point. The reading on the scale 102 of the height ruler 101 is the measurement data. The height ruler 101 and the undercut depth ruler 105 are respectively mounted on the main ruler 103 using locking devices. The multi-purpose ruler 104 includes a width ruler 1041, an angle ruler 1042, and a gap ruler 1043.

[0005] The calibration of welding inspection gauges is strictly conducted in accordance with the National Metrological Verification Regulation JJG 704-2005 "Welding Inspection Gauges". The calibration covers 12 main items, using 10 major categories and 25 subcategories of standard instruments and supporting equipment. The preparation work before calibration is extremely tedious. Since most of the standard equipment used is shared with other metrological standards, a significant amount of time and effort is spent on finding and assembling it, often resulting in the entire laboratory workbench being filled with calibration standard instruments. Furthermore, since various standard instruments are placed independently without fixed locations, their stability during use is poor. When different operators take readings of the relatively unstable measurement system, human factors introduce significant measurement errors, greatly affecting the calibration accuracy. In addition, due to the large number of standard instruments and their frequent sharing with other items, they cannot be taken out of the laboratory. Therefore, welding inspection gauges can only be calibrated using a sample delivery method, where the customer sends the sample to the laboratory and retrieves it after calibration. The customer cannot use the sample while it is in the laboratory, which cannot meet the customer's requirement for on-site calibration and immediate use. Furthermore, the cost of calibrating welding inspection gauges is too low, and the staffing, equipment investment, inspection time and project benefits are seriously disproportionate, resulting in a large waste of calibration resources. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a welding inspection ruler inspection device to solve the problems of poor stability of standard instruments during use, large measurement errors introduced by human factors, inability to be carried, and waste of verification resources. The device is designed to be easy to pick up and carry, reduce errors introduced by human factors, improve detection efficiency, shorten detection time, and improve detection accuracy.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows.

[0008] The welding inspection ruler inspection device includes a housing and a testing platform installed inside the housing. The testing platform is detachably and centrally equipped with an angle parameter detection device for detecting whether the angle ruler reading is standard, a height ruler reading error measurement device for detecting whether the height ruler reading is standard, a depth parameter detection device for detecting whether the bite depth ruler reading is standard, a width ruler reading error measurement device for detecting whether the width ruler reading is standard, a gap ruler reading error measurement device for detecting whether the gap ruler reading is standard, a surface roughness difference measurement device for comparing and detecting the roughness of the welding inspection ruler's inspection surface, and a vertical distance measurement device for detecting the distance from the edge of the indicator line of the height ruler, bite depth ruler, and multi-purpose ruler to the marking surface of the main ruler.

[0009] To further optimize the technical solution, the angle parameter detection device includes a ruler a, a right-angle ruler connected to the ruler a via a first adjustment structure, and a sector plate connected to the right-angle ruler via a second adjustment structure. The sector plate is rotatably connected to an arc-shaped main scale with an arc engraved on its upper surface. The arc-shaped main scale is slidably mounted on a vernier scale fixed to the right-angle ruler. One end of the arc-shaped main scale is fixedly connected to a base scale that is in parallel contact with the ruler a. The bottom end of the arc-shaped main scale is equipped with a linkage mechanism for driving the arc-shaped main scale to rotate to prevent measurement errors caused by manual handling of the arc-shaped main scale.

[0010] To further optimize the technical solution, the height gauge indication error measuring device is detachably mounted on a first rectangular base and a second rectangular base that is at a certain distance from and parallel to the first rectangular base on the testing platform. A ruler positioning plate and a ruler b inserted into and perpendicular to the ruler positioning plate are provided between the first and second rectangular bases. A standard cylindrical rod is provided on the top surface of the ruler positioning plate that is in contact with the detection surface of the ruler b and perpendicular to the ruler positioning plate, and is used to simulate the concavity and convexity of the weld foot. The standard cylindrical rod is clamped by a clamping structure set on the testing platform.

[0011] To further optimize the technical solution, the detection platform is also equipped with a ruler b positioning groove for positioning ruler b and a standard cylindrical bar positioning groove for positioning standard cylindrical bars of different specifications.

[0012] To further optimize the technical solution, the depth parameter detection device includes several gauge blocks that are detachably mounted on the detection platform and are arranged in a straight line via several gauge block fixing plates.

[0013] To further optimize the technical solution, the width ruler indication error measuring device includes several templates that are detachably set on the detection platform by several template positioning blocks. The templates are arranged in a straight line and the specifications of each template decrease sequentially.

[0014] To further optimize the technical solution, the gap gauge indication error measuring device includes a vernier caliper that is detachably mounted on the detection platform via a vernier caliper positioning block.

[0015] To further optimize the technical solution, the vertical distance measuring device includes a feeler gauge that can be detachably mounted on the detection platform.

[0016] To further optimize the technical solution, the testing platform is also equipped with a flatness adjustment device for detecting and adjusting the surface flatness of the testing platform.

[0017] To further optimize the technical solution, the bottom of the box is equipped with casters for easy movement on the ground, and the top of the box is equipped with a pull rod for easy pulling by hand.

[0018] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0019] This invention integrates a large number of standard instruments onto a testing platform by detachably and centrally assembling an angle parameter detection device, a height gauge indication error measurement device, a depth parameter detection device, a width gauge indication error measurement device, a gap gauge indication error measurement device, a surface roughness difference measurement device, and a vertical distance measurement device. This significantly reduces calibration preparation time, improves work efficiency, makes the overall device easy to pick up and carry, and ensures that the positions of each standard instrument are relatively fixed, reducing errors introduced by human factors, shortening testing time, and improving testing accuracy.

[0020] This invention breaks with the traditional model of traceability of measurement values. The development of a portable device allows customers to add the option of on-site online verification in addition to sample delivery verification, thus meeting the requirement of immediate use of welding inspection gauges.

[0021] This invention reduces the operational difficulty for calibration personnel. Standard instruments are categorized and combined to form a calibration area, effectively guiding and prompting calibration personnel to complete calibration items, eliminating omissions, and significantly reducing the operational difficulty of calibration work.

[0022] This invention improves calibration accuracy. The relatively fixed position of the standard instrument reduces measurement errors introduced by manual manipulation, and the scientifically and rationally positioned orientation effectively reduces differences in human visual readings, thus improving calibration accuracy.

[0023] This invention utilizes a linkage mechanism installed at the bottom of the arc-shaped main scale, allowing the arc-shaped main scale to rotate directly by hand. This avoids the instability caused by directly rotating the arc-shaped main scale by hand, making the measurement process smoother and improving the accuracy and stability of the measurement.

[0024] This invention, by detachably setting a first rectangular base and a second rectangular base on the testing platform, inserting a ruler onto a ruler positioning plate, and positioning a standard cylindrical rod between the top surface of the ruler positioning plate and the testing surface of the ruler through a clamping structure, makes the height parameter measurement of the welding inspection ruler more standardized, avoids the problem of errors caused by direct hand support of the measuring tool, ensures the stability of the measurement process, and improves the measurement accuracy.

[0025] The clamping structure of this invention can effectively clamp the standard cylindrical bar, so that the standard cylindrical bar will not move during the measurement process and no manual support is required, thus ensuring the stability of the measurement process.

[0026] When the welding inspection gauge is placed on this device for testing, the reading on the scale of the welding inspection gauge is compared with the diameter of the standard cylindrical bar to determine the indication error of the height gauge, thus achieving the testing function. Attached Figure Description

[0027] Figure 1 This is a partial structural schematic diagram of the present invention;

[0028] Figure 2 for Figure 1 Top view;

[0029] Figure 3 This is a schematic diagram of the angle parameter detection device of the present invention. Figure 1 ;

[0030] Figure 4 This is a schematic diagram of the angle parameter detection device of the present invention. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the angle parameter detection device of the present invention. Figure 3 ;

[0032] Figure 6 This is a top view of the angle parameter detection device of the present invention;

[0033] Figure 7 This is a schematic diagram of the height gauge indication error measuring device of the present invention. Figure 1 ;

[0034] Figure 8 This is a schematic diagram of the height gauge indication error measuring device of the present invention. Figure 2 ;

[0035] Figure 9 This is a top view of the height gauge indication error measuring device of the present invention;

[0036] Figure 10 This is a schematic diagram of the positioning tile box in the height gauge indication error measuring device of the present invention;

[0037] Figure 11 This is a top view of the Type III welding inspection gauge;

[0038] Figure 12 This is a bottom view of a Type III welding inspection gauge;

[0039] Figure 13 This is a schematic diagram simulating the actual testing of the height gauge indication error measuring device of the present invention;

[0040] Figure 14 A schematic diagram illustrating the structure of the feeler gauge of this invention during actual testing. Figure 1 ;

[0041] Figure 15 A schematic diagram illustrating the structure of the feeler gauge of this invention during actual testing. Figure 2 ;

[0042] Figure 16 This is a schematic diagram simulating the actual testing of the width ruler indication error measuring device of the present invention.

[0043] The components include: 1. Testing platform; 2. Angle parameter testing device, 21. Ruler, 22. Right angle ruler, 23. Arc-shaped main scale, 24. Vernier scale, 25. Arc-shaped groove, 26. Arc-shaped rack, 27. Arc-shaped connecting block, 28. Pin, 29. Sector plate, 210. First adjusting block, 211. First adjusting screw, 212. First fastening screw, 213. Second adjusting block, 214. Second adjusting screw, 215. Second fastening screw, 216. Adjusting handwheel, 217. Adjusting screw, 218. First gear, 219. Second gear, 220. Gear connecting column, 221. Base scale; 3. Height gauge indication error measuring device, 31. First rectangular base, 32. Second rectangular base, 33. Positioning tile box, 331. Positioning step hole, 34. Adjusting spring knob, 35. Vertical positioning plate, 351. Positioning circular plate, 36. Ruler Positioning plate, 361. Ruler positioning notch, 37. Ruler b, 38. Limiting seat, 39. Standard cylindrical bar, 310. Ruler b positioning groove, 311. Standard cylindrical bar positioning groove; 4. Depth parameter detection device, 41. Gauge block, 42. Gauge block fixing plate; 5. Width ruler indication error measuring device, 51. Template, 52. Template positioning block; 6. Gap ruler indication error measuring device, 61. Vernier caliper, 62. Vernier caliper 7. Surface roughness difference measuring device; 71. Roughness comparison block; 8. Flatness adjustment device; 81. Level; 82. Leveling knob; 9. Vertical distance measuring device; 91. Feeler gauge; 10. Welding inspection ruler; 101. Height gauge; 102. Scale; 103. Main scale; 104. Multi-purpose ruler; 1041. Width gauge; 1042. Angle gauge; 1043. Gap gauge; 105. Edge depth gauge. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0045] A welding inspection ruler inspection device, combined with Figures 1 to 16As shown, the device includes a housing and a testing platform 1 housed within the housing. The testing platform 1 is detachably and centrally equipped with an angle parameter testing device 2, a height gauge indication error measuring device 3, a depth parameter testing device 4, a width gauge indication error measuring device 5, a gap gauge indication error measuring device 6, a surface roughness difference measuring device 7, and a vertical distance measuring device 9. All of the above standard instruments can be fixed in place, minimizing the need for manual handling, while facilitating disassembly and traceability, significantly improving the stability of the verification.

[0046] Selection of Testing Platform 1: This includes the specifications, materials, and accuracy level of Testing Platform 1, taking into full account factors such as actual verification, periodic traceability, and portability. Considering the portability of the device, a Class 1 flat plate with dimensions of 400mm × 400mm was selected as the main body of the testing platform. To avoid surface deformation and rust during transport, marble was chosen instead of metal.

[0047] The enclosure is made of aluminum alloy, with shock-absorbing foam filling around the testing platform and vibration-damping cotton installed on top. The four corners of the enclosure are reinforced with metal. Casters are installed at the bottom of the enclosure for easy movement on the ground. A pull rod is provided at the top for easy manual operation. By selecting an appropriately sized enclosure, equipped with casters and a pull rod, and reinforcing the corners, the overall weight and volume of the device are controlled, while simultaneously meeting the needs of sample delivery and on-site verification.

[0048] Integration of standard instruments: By selecting a scientific and reasonable approach, while taking into account both verification work and periodic traceability, the space of the testing platform is made reasonable use of to integrate the standard instruments corresponding to related verification items. This will facilitate the operation of verification personnel, guide and prompt them to complete the verification items, and avoid omissions.

[0049] To improve verification efficiency, reduce the operational difficulty for verification personnel, and avoid omissions in the verification process, the standard instruments are divided into 5 groups, forming verification areas for form and position errors, angle parameters, height parameters, width parameters, and depth parameters. This effectively guides and prompts verification personnel to complete the verification items, eliminates omissions, and significantly reduces the operational difficulty of the verification work.

[0050] Angle parameter detection device 2 is divided into angle parameter verification area, depth parameter detection device 4 is divided into depth parameter verification area, height gauge indication error measurement device 3 is divided into height parameter verification area, surface roughness difference measurement device 7 and vertical distance measurement device 9 are divided into form and position error verification area, and width gauge indication error measurement device 5 and gap gauge indication error measurement device 6 are divided into width parameter verification area.

[0051] The angle parameter detection device 2 is used to detect whether the value of the angle ruler 1042 is standard. It includes a straight ruler a21, a first adjustment structure, a right angle ruler 22, a second adjustment structure, a sector plate 29, an arc-shaped main ruler 23, a vernier ruler 24, a base ruler 221, and a linkage mechanism.

[0052] The arc-shaped main scale 23 is rotatably connected to the sector plate 29, and the upper surface is engraved with an arc.

[0053] The vernier scale 24 is slidably mounted on the arc-shaped main scale 23 and fixedly mounted on the right-angle ruler 22. The upper surface is also engraved with an arc.

[0054] Right-angle ruler 22 is connected to ruler a21 through the first adjustment structure.

[0055] The first adjustment structure includes a first adjustment block 210, a first fastening screw 212, and a first adjustment screw 211. The first adjustment block 210 is engaged with the ruler a21 and the right-angle ruler 22. The first fastening screw 212 is fastened between the first adjustment block 210 and the right-angle ruler 22, thus positioning the first adjustment block 210 and the right-angle ruler 22. The first adjustment screw 211 is located on the side wall of the first adjustment block 210 and abuts against the ruler a21, used to adjust the distance between the ruler a21 and the right-angle ruler 22.

[0056] The sector plate 29 is connected to the right angle ruler 22 through the second adjustment structure.

[0057] The second adjustment structure includes a second adjustment block 213, a second fastening screw 215, and a second adjustment screw 214. The second adjustment block 213 is fitted onto the right-angle ruler 22 and the sector plate 29. The second fastening screw 215 is fastened between the second adjustment block 213 and the sector plate 29, thus positioning the second adjustment block 213 and the sector plate 29. The second adjustment screw 214 is located on the side wall of the second adjustment block 213 and abuts against the sector plate 29, used to adjust the distance between the sector plate 29 and the right-angle ruler 22.

[0058] The first adjusting screw 211 and the second adjusting screw 214 position the entire device on the testing platform, and the linkage mechanism is located inside the testing platform.

[0059] When the first adjusting screw 211 is rotated so that the straight ruler a21 and the right-angle ruler 22 come into contact, and the second adjusting screw 214 is rotated so that the right-angle ruler 22 and the sector plate 29 come into contact, the zero position of the arc-shaped main scale 23 is aligned with the zero position of the vernier scale 24, thus achieving zero adjustment.

[0060] The base ruler 221 is fixedly connected to one end of the arc-shaped main ruler 23 and is in parallel contact with the straight ruler a21.

[0061] The linkage mechanism is installed at the bottom of the arc-shaped main scale 23 to drive the arc-shaped main scale 23 to rotate, so as to prevent measurement errors caused by manual handling of the arc-shaped main scale 23.

[0062] The linkage mechanism includes an adjusting handwheel 216, an adjusting screw 217, a first gear 218, a second gear 219, a gear connecting column 220, an arc groove 25, an arc rack 26, and a drive pinion.

[0063] The adjusting handwheel 216 is for manual adjustment. The adjusting screw 217 is vertically fixed at the bottom of the adjusting handwheel 216. The first gear 218 is fixed at the bottom of the adjusting screw 217. The second gear 219 meshes with the first gear 218. The gear connecting column 220 is fixed to the second gear 219 and connected to the sector plate 29 via a bearing, allowing it to rotate relative to the sector plate 29. An arc-shaped groove 25 is formed on the bottom surface of the arc-shaped main scale 23, and an arc-shaped rack 26 is fixedly installed in the arc-shaped groove 25 by screws. A drive pinion is fixed at the end of the gear connecting column 220 extending from the sector plate 29. The drive pinion is located in the arc-shaped groove 25 and meshes with the arc-shaped rack 26. The rotation of the drive pinion drives the rotation of the arc-shaped rack 26, which in turn drives the rotation of the arc-shaped main scale 23.

[0064] The second gear 219, the first gear 218, part of the adjusting screw 217, and part of the gear connecting column 220 in the linkage mechanism are located inside the detection platform.

[0065] An arc-shaped connecting block 27 is fixedly installed on the inner wall of the arc-shaped main scale 23. The arc-shaped connecting block 27 and the sector plate 29 are rotatably connected by a pin 28, which enables the arc-shaped connecting block 27 and the arc-shaped main scale 23 to rotate synchronously around the pin 28.

[0066] The height gauge indication error measuring device 3 is used to detect whether the height gauge 101 indication is standard. It includes a first rectangular base 31 and a second rectangular base 32 that are detachably mounted on the detection platform. The first rectangular base 31 and the second rectangular base 32 are arranged in a long strip shape. The second rectangular base 32 has a certain distance from the first rectangular base 31 and is parallel to the first rectangular base 31.

[0067] A ruler positioning plate 36 and a ruler b37 are disposed between the first rectangular base 31 and the second rectangular base 32. The ruler b37 is inserted into the ruler positioning plate 36. Specifically, the left end of the ruler positioning plate 36 has a vertical ruler positioning notch 361, and the ruler b37 is inserted into the ruler positioning notch 361. The ruler b37 is perpendicular to the ruler positioning plate 36, and one side of the right end of the ruler b37 is the detection surface.

[0068] A standard cylindrical rod 39 is positioned on the top surface of the ruler positioning plate 36. The standard cylindrical rod 39 contacts the detection surface of the ruler b37 and is perpendicular to the ruler positioning plate 36, used to simulate the unevenness of the weld bead. Since the diameter of the standard cylindrical rod 39 is standard and known, when the welding inspection ruler is placed on this device for inspection, the reading on the scale 102 of the height gauge 101 of the welding inspection ruler is compared with the diameter of the standard cylindrical rod 39 to determine the indication error of the height gauge 101, thus achieving the inspection function.

[0069] The standard cylindrical rod 39 is clamped by a clamping structure set on the detection platform. The clamping structure includes a positioning tile box 33, a vertical positioning plate 35, an adjusting spring knob 34, and a positioning circular plate 351.

[0070] The positioning tile box 33 is vertically fixed on the top surface of the first rectangular base 31. The positioning tile box 33 has a positioning hole for positioning one end of the standard cylindrical rod 39.

[0071] In order to be applicable to more different models of standard cylindrical bars, so that the present invention can be used to position standard cylindrical bars of different models and thus detect more data, the present invention sets the positioning hole as a positioning stepped hole 331.

[0072] The vertical positioning plate 35 is detachably mounted on the detection platform and corresponds to the position of the first rectangular base 31, and is located on the outside of the second rectangular base 32.

[0073] The adjusting spring knob 34 is located inside the vertical positioning plate 35 and is used for rotational adjustment. That is, rotating the adjusting spring knob 34 can adjust the distance between the positioning circular plate 351 and the standard cylindrical bar 39.

[0074] The positioning circular plate 351 is set at one end of the adjusting spring knob 34 and is concentrically set with the standard cylindrical rod 39. Under the adjustment of the adjusting spring knob 34, it can contact the standard cylindrical rod 39. The positioning circular plate 351 and the positioning tile box 33 can clamp the standard cylindrical rod 39.

[0075] A limit seat 38 is detachably installed on the detection platform located on the left side of the ruler b37 to limit the left end of the ruler b37.

[0076] In order to enable the device to position the ruler b37, the present invention also provides a ruler b positioning groove 310 on the detection platform 1. When the height ruler 101 is not being detected, the ruler b37 can be placed into the ruler b positioning groove 310, which greatly reduces the height of the components on the detection platform.

[0077] In order to enable the device to position the standard cylindrical rod 39, the present invention also provides several standard cylindrical rod positioning slots 311 on the detection platform 1. The standard cylindrical rod positioning slots 311 can position standard cylindrical rods 39 of different specifications, thereby greatly reducing the height of the components on the detection platform.

[0078] The depth parameter detection device 4 is used to detect whether the reading of the bite depth gauge 105 is standard. It includes gauge blocks 41, and several gauge blocks 41 are provided. They are detachably mounted on the detection platform 1 by several gauge block fixing plates 42 and are in a straight line.

[0079] The width ruler indication error measuring device 5 is used to detect whether the indication of the width ruler 1041 is standard. It includes a template 51, of which several templates 51 are set. The templates 51 are detachably set on the detection platform 1 by several template positioning blocks 52. The templates 51 are arranged in a straight line and the size of each template 51 decreases sequentially. The templates 51 are set in a trapezoidal shape and are special templates.

[0080] The gap gauge indication error measuring device 6 is used to detect whether the indication of the gap gauge 1043 is standard, including a vernier caliper 61 that is detachably mounted on the detection platform 1 via a vernier caliper positioning block 62.

[0081] The surface roughness difference measuring device 7 is used to compare and detect the surface roughness of the weld inspection ruler 10, and includes several roughness comparison blocks 71 set on the detection platform 1.

[0082] The vertical distance measuring device 9 is used to detect the distance from the edge of the index line of the height gauge 101, the bite depth gauge 105, and the multi-purpose gauge 104 to the marking surface of the main scale 103. The vertical distance measuring device 9 includes a feeler gauge 91 that is detachably mounted on the detection platform 1, and the feeler gauge 91 can be replaced according to the actual situation.

[0083] The testing platform 1 is also equipped with a flatness adjustment device 8, which is used to detect and adjust the flatness of the surface of the testing platform 1. The flatness adjustment device 8 includes a level 81 and leveling knobs 82. The level 81 is installed on the testing platform 1, and people can judge whether the testing platform 1 is in a level state according to the level 81. There are three leveling knobs 82, which are respectively installed inside the testing platform 1. The bottom of the leveling knob 82 is equipped with an adjusting bolt. The lower part of the adjusting bolt is threaded to the housing. The part of the adjusting bolt that contacts the testing platform 1 is equipped with a bearing. Thus, the flatness of the testing platform 1 can be adjusted by rotating the leveling knobs 82.

[0084] The measurement process of the angle gauge 1042 of the welding inspection ruler in this invention is as follows.

[0085] First, the device is positioned on the detection platform by adjusting the first adjusting screw 211 and the second adjusting screw 214 to achieve the positioning of the device and ensure more accurate measurement.

[0086] Then, the device is zeroed. The first adjusting screw 211 is rotated by hand, which pushes the ruler a21 to contact the right angle ruler 22. The second adjusting screw 214 is rotated by hand, which pushes the right angle ruler 22 to contact the sector plate 29. At this time, the zero position of the arc-shaped main scale 23 is aligned with the zero position of the vernier scale 24.

[0087] Then, the person manually rotates the adjusting handwheel 216 counterclockwise, causing the arc-shaped main scale 23 and the base scale 221 to rotate counterclockwise, opening a certain angle between the base scale 221 and the straight ruler a21. When the person manually rotates the adjusting handwheel 216 counterclockwise, the adjusting handwheel 216 drives the adjusting screw 217 and the first gear 218 to rotate counterclockwise, which in turn drives the second gear 219, the gear connecting column 220, and the drive pinion to rotate clockwise. Finally, the drive pinion drives the arc-shaped rack 26, the arc-shaped main scale 23, and the base scale 221 to rotate counterclockwise.

[0088] Next, place one side of the welding inspection ruler to be measured against the straight ruler a21, and manually turn the adjusting handwheel 216 clockwise to drive the arc-shaped main ruler 23 and the base ruler 221 to rotate clockwise, so that the base ruler 221 is in close contact with the other side of the welding inspection ruler to be measured, and the welding inspection ruler to be measured is clamped between the straight ruler a21 and the base ruler 221.

[0089] Finally, the scales on the curved main scale 23 and the vernier scale 24 were read to achieve accurate readings.

[0090] The process of measuring the height parameter of the height gauge 101 of the welding inspection ruler in this invention is as follows.

[0091] First, insert the ruler b37 into the ruler positioning notch 361 of the ruler positioning plate 36. Select a standard cylindrical rod 39 of a certain model and insert one end of the standard cylindrical rod 39 into the positioning stepped hole 331. Rotate the adjusting spring knob 34 so that the adjusting spring knob 34 drives the positioning round plate 351 to push towards the standard cylindrical rod 39, so that the positioning round plate 351 contacts the standard cylindrical rod 39 and clamps the standard cylindrical rod 39.

[0092] Then, adjust the position of the ruler positioning plate 36, in which the ruler b37 is inserted, so that the detection surface of the ruler b37 is in contact with the standard cylindrical rod 39.

[0093] Next, align the 45° notches on both sides of the main scale 103 of the welding inspection ruler 10 with the detection surface of the ruler b37 and the top surface of the ruler positioning plate 36, respectively. Extend the welding inspection ruler 10 to contact the standard cylindrical bar, read the data on the scale, and compare the reading with the diameter of the standard cylindrical bar 39 to obtain the indication error of the height ruler 101.

[0094] Finally, by replacing the standard cylindrical rods with different models and repeating the above operations, multiple sets of error data are generated to achieve the detection.

[0095] When measuring the undercut depth gauge 105 of the welding inspection gauge, the present invention simply places the undercut depth gauge 105 directly on the gauge block 41 and takes the reading.

[0096] In this invention, when measuring the width of the welding inspection ruler 1041, the measuring surface of the main ruler 103 is brought into contact with one side of the template 51, and the multi-purpose ruler 104 is rotated so that its inner surface comes into contact with the other side of the template 51. The width value is read from the multi-purpose ruler 104, and the difference between the read width value and the actual width of the template is taken as the measurement result.

[0097] When detecting the value of the gap gauge 1043 of the welding inspection gauge, the present invention directly compares the gap gauge 1043 with the vernier caliper 61 and reads the value of the vernier caliper 61.

[0098] When performing surface roughness testing on a welding inspection ruler, this invention simply involves bringing the inspection surface of the welding inspection ruler into direct contact with the roughness comparison block 71 for comparison.

[0099] When testing the height gauge 101, the bite depth gauge 105, and the distance from the edge of the index line of the multi-purpose gauge 104 to the marking surface of the main gauge 103, the present invention can directly attach the welding inspection gauge to the feeler gauge 91 for comparison.

Claims

1. A welding inspection ruler inspection device, characterized in that: The device includes a housing and a testing platform (1) installed inside the housing. The testing platform (1) is detachably and centrally equipped with an angle parameter testing device (2) for testing whether the angle gauge (1042) reading is standard, a height gauge reading error measuring device (3) for testing whether the height gauge (101) reading is standard, a depth parameter testing device (4) for testing whether the bite depth gauge (105) reading is standard, a width gauge reading error measuring device (5) for testing whether the width gauge (1041) reading is standard, a gap gauge reading error measuring device (6) for testing whether the gap gauge (1043) reading is standard, a surface roughness difference measuring device (7) for comparing and testing the surface roughness of the welding inspection gauge (10), and a vertical distance measuring device (9) for testing the distance from the edge of the index line of the height gauge (101), bite depth gauge (105), and multi-purpose gauge (104) to the marking surface of the main gauge (103). The vertical distance measuring device (9) includes a feeler gauge (91) that is detachably mounted on the detection platform (1). The bottom of the box is equipped with casters for easy movement on the ground, and the top of the box is equipped with a pull rod for easy pulling by hand; The height gauge indication error measuring device (3) is detachably mounted on the first rectangular base (31) and the second rectangular base (32) which is at a certain distance from the first rectangular base (31) and parallel to the first rectangular base (31). A ruler positioning plate (36) and a ruler b (37) are inserted on the ruler positioning plate (36) and perpendicular to the ruler positioning plate (36). A standard cylindrical rod (39) for simulating the concavity and convexity of the weld foot is provided on the top surface of the ruler positioning plate (36) in contact with the detection surface of the ruler b (37) and perpendicular to the ruler positioning plate (36). The standard cylindrical rod (39) is clamped by a clamping structure set on the detection platform. The clamping mechanism includes a positioning tile box (33), a vertical positioning plate (35), an adjusting spring knob (34), and a positioning circular plate (351). The positioning tile box (33) is vertically fixed on the top surface of the first rectangular base (31). The positioning tile box (33) has a positioning hole for positioning one end of the standard cylindrical rod (39). The positioning hole is configured as a positioning stepped hole (331). The detection platform (1) is also provided with a ruler b positioning groove (310) for positioning ruler b (37) and a standard cylindrical bar positioning groove (311) for positioning standard cylindrical bars (39) of different specifications.

2. The welding inspection ruler inspection device according to claim 1, characterized in that: The angle parameter detection device (2) includes a ruler a (21), a right-angle ruler (22) connected to the ruler a (21) via a first adjustment structure, and a sector plate (29) connected to the right-angle ruler (22) via a second adjustment structure. The sector plate (29) is rotatably connected to an arc-shaped main ruler (23) with an arc engraved on its upper surface. The arc-shaped main ruler (23) is slidably mounted on a vernier scale (24) fixedly mounted on the right-angle ruler (22). One end of the arc-shaped main ruler (23) is fixedly connected to a base ruler (221) that is in parallel contact with the ruler a (21). The bottom end of the arc-shaped main ruler (23) is equipped with a linkage mechanism for driving the arc-shaped main ruler (23) to rotate to prevent the measurement error from being introduced by the hand moving the arc-shaped main ruler (23).

3. The welding inspection ruler inspection device according to claim 1, characterized in that: The depth parameter detection device (4) includes several gauge blocks (41) that are detachably mounted on the detection platform (1) and are arranged in a straight line via several gauge block fixing plates (42).

4. The welding inspection ruler inspection device according to claim 1, characterized in that: The width ruler indication error measuring device (5) includes several templates (51) that are detachably set on the detection platform (1) by several template positioning blocks (52). The templates (51) are arranged in a straight line and the specifications of each template (51) decrease sequentially.

5. The welding inspection ruler inspection device according to claim 1, characterized in that: The gap gauge indication error measuring device (6) includes a vernier caliper (61) that is detachably mounted on the detection platform (1) via a vernier caliper positioning block (62).

6. The welding inspection ruler inspection device according to claim 1, characterized in that: The detection platform (1) is also provided with a flatness adjustment device (8) for detecting the flatness of the surface of the detection platform (1) and for adjusting the flatness of the surface of the detection platform (1).

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