Weld inspection ruler and method of using the same

Abstract

The present invention discloses a weld inspection ruler and a method for using the same, belonging to the technical field of measuring tools. The ruler comprises a main ruler, a multi-purpose ruler, a first sub-rule and a second sub-rule. The multi-purpose ruler, the first sub-rule and the second sub-rule are integrated on the main ruler, and the ruler has a compact structure, is easy to carry and use, and can quickly and accurately measure the weld leg thickness at the same position of a fillet weld and the weld leg height of two sides at the same time by operating the multi-purpose ruler, the first sub-rule and the second sub-rule. The main ruler does not need to be shifted during the measurement process, which effectively reduces the error caused by multiple shifts in the past and ensures the accuracy of the measurement results. At the same time, the weld inspection ruler is easy to operate, does not rely on the operator's experience and skill level, has complete functions, can effectively improve work efficiency and the accuracy of measurement data, and has good application prospects.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring tools and relates to a weld inspection ruler and a use method thereof. Background Art

[0002] Weld inspection ruler is a common inspection tool used to check weld quality. Currently, commonly used weld inspection rulers are mainly composed of main ruler, depth ruler, angle ruler, etc., which are inconvenient in actual use. For example, when measuring the thickness of the fillet weld leg and the weld height on both sides, it is necessary to measure three times, measure the weld height on both sides of the fillet weld respectively, and then measure the weld leg thickness of the fillet weld. When the dimensions of fillet welds at multiple locations need to be measured, the workload becomes very huge; and each time the measurement is made, the weld inspection ruler may move, and it cannot be guaranteed that the weld height on both sides of the fillet weld and the weld leg thickness at the same location are measured, which causes certain errors in the measurement results. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the purpose of the present invention is to provide a weld inspection ruler and a method of using the same, which can simultaneously measure the weld leg thickness at the same position of a fillet weld and the weld leg heights of two sides, thereby improving the measurement efficiency and accuracy.

[0004] The present invention is achieved through the following technical solutions:

[0005] The invention discloses a weld inspection ruler, comprising a main ruler, a multi-purpose ruler, a first sub-rule and a second sub-rule; the main ruler is a square with missing corners having four straight sides and one hypotenuse, and the third straight side and the fourth straight side adjacent to the hypotenuse are of equal length; the main ruler is provided with a multi-purpose ruler slide groove penetrating the hypotenuse; the multi-purpose ruler is slidably connected in the multi-purpose ruler slide groove and can be locked with the main ruler by a multi-purpose ruler locking screw; the axis of the multi-purpose ruler is colinear with the diagonal line of the main ruler and is perpendicular to the hypotenuse; one end of the multi-purpose ruler is provided with a multi-purpose ruler tip; the multi-purpose ruler is provided with a multi-purpose ruler reference scale line, and the main ruler adjacent to the multi-purpose ruler reference scale line is provided with a multi-purpose ruler range scale line;

[0006] The first secondary ruler and the second secondary ruler are respectively arranged at the third straight edge and the fourth straight edge, and are slidably connected with the main ruler, and can be locked with the main ruler by tightening screws of the first secondary ruler and the second secondary ruler respectively; the first secondary ruler is provided with a first secondary ruler reference scale line, and the main ruler adjacent to the first secondary ruler reference scale line is provided with a first secondary ruler range scale line; one end of the first secondary ruler is provided with a first secondary ruler tip; the second secondary ruler is provided with a second secondary ruler reference scale line, and the main ruler adjacent to the second secondary ruler reference scale line is provided with a second secondary ruler range scale line; one end of the second secondary ruler is provided with a second secondary ruler tip;

[0007] When the tips of the multi-purpose ruler tip, the first secondary ruler tip and the second secondary ruler tip are located at the intersection of the third straight side and the extension line of the fourth straight side, the reference scale line of the multi-purpose ruler is aligned with the zero scale line of the multi-purpose ruler range scale line, the reference scale line of the first secondary ruler is aligned with the zero scale line of the first secondary ruler range scale line, and the reference scale line of the second secondary ruler is aligned with the zero scale line of the second secondary ruler range scale line.

[0008] Preferably, the multi-purpose ruler is provided with a multi-purpose ruler strip hole, and the multi-purpose ruler locking screw passes through the multi-purpose ruler strip hole to be connected to the main ruler; the first secondary ruler is provided with a first secondary ruler strip hole, and the first secondary ruler tightening screw passes through the first secondary ruler strip hole to be connected to the main ruler; the second secondary ruler is provided with a second secondary ruler strip hole, and the second secondary ruler tightening screw passes through the second secondary ruler strip hole to be connected to the main ruler.

[0009] Further preferably, a first secondary scale fixing screw is passed through the strip-shaped hole of the first secondary scale, and the first secondary scale fixing screw is fixedly connected to the main scale; a second secondary scale fixing screw is also passed through the strip-shaped hole of the second secondary scale, and the second secondary scale fixing screw is fixedly connected to the main scale.

[0010] Further preferably, a first secondary ruler slide groove and a second secondary ruler slide groove are respectively provided on the main ruler, the first secondary ruler is slidably connected in the first secondary ruler slide groove, and the second secondary ruler is slidably connected in the second secondary ruler slide groove.

[0011] Preferably, the length of the multi-purpose ruler is shorter than the multi-purpose ruler slideway.

[0012] Preferably, upper surfaces of the main ruler, the multi-purpose ruler, the first secondary ruler and the second secondary ruler are flush.

[0013] Preferably, the angles of the first and second secondary ruler tips are 37-39°, and the angle of the multi-purpose ruler tip is 12°-16°.

[0014] Preferably, a plurality of width measuring notches for measuring the width of the butt weld are provided on the tip of the multi-purpose ruler along the axis of the multi-purpose ruler, and the width measuring notches are perpendicular to the axis of the multi-purpose ruler.

[0015] Preferably, the main ruler is provided with a plurality of measuring holes for measuring the size of weld pores, and the diameters of the plurality of measuring holes are not equal.

[0016] The invention discloses a method for using the weld inspection ruler. The method comprises the following steps: placing a third straight edge and a fourth straight edge in close contact with two vertical planes of a welded part respectively, moving the multi-purpose ruler so that the tip of the tip of the multi-purpose ruler is pressed against the fillet weld and then tightening the locking screw of the multi-purpose ruler; moving a first secondary ruler and a second secondary ruler respectively so that the tips of the tip of the first secondary ruler and the tip of the second secondary ruler are pressed against two edges of the fillet weld respectively, and tightening the tightening screws of the first secondary ruler and the second secondary ruler respectively; the reading of the multi-purpose ruler reference scale line on the multi-purpose ruler range scale line is the fillet weld leg thickness, and the reading of the first secondary ruler reference scale line on the first secondary ruler range scale line and the reading of the second secondary ruler reference scale line on the second secondary ruler range scale line are respectively the weld leg heights on both sides of the fillet weld.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] The weld inspection ruler disclosed in the present invention integrates a multi-purpose ruler, a first sub-rule and a second sub-rule on a main ruler, has a compact structure, is easy to carry and use, and can quickly and accurately measure the weld leg thickness at the same position of a fillet weld and the weld leg heights of two sides at the same time by operating the multi-purpose ruler, the first sub-rule and the second sub-rule. During the measurement process, the main ruler does not need to be shifted, which effectively reduces the errors caused by multiple shifts in the past and ensures the accuracy of the measurement results.

[0019] Furthermore, strip holes are respectively arranged on the multi-purpose ruler, the first secondary ruler and the second secondary ruler, which can cooperate with their respective tightening screws to achieve sliding and locking. The structural design is reasonable and the manufacture and use are convenient.

[0020] Furthermore, the first secondary ruler and the second secondary ruler are respectively limited by the first secondary ruler fixing screws and the second secondary ruler fixing screws, and cooperate with their respective tightening screws, so that the first secondary ruler and the second secondary ruler can only slide and move in the length direction, thereby ensuring the accuracy of the measurement data.

[0021] Furthermore, the first secondary ruler and the second secondary ruler are respectively arranged in the first secondary ruler slide groove and the second secondary ruler slide groove, and the structure is simple and reliable, which can enable the first secondary ruler and the second secondary ruler to only slide and displace in the length direction, thereby ensuring the accuracy of the measurement data.

[0022] Furthermore, the length of the multi-purpose ruler is shorter than the multi-purpose ruler slide slot, and the multi-purpose ruler can be completely stored in the multi-purpose ruler slide slot when not in use, thereby preventing the multi-purpose ruler tip from colliding and wearing and injuring the operator.

[0023] Furthermore, the upper surfaces of the main ruler, the multi-purpose ruler, the first secondary ruler and the second secondary ruler are flush, which can improve the accuracy of the reading. The same plane can measure the weld leg thickness and weld leg height at the same position of the fillet weld. If they are not coplanar, the weld leg height and thickness at the same position may not be measured, and the position difference may be a distance of the thickness of the welding inspection ruler.

[0024] Furthermore, the angle between the first secondary ruler tip and the second secondary ruler tip is 37° to 39°, and the angle between the multi-purpose ruler tip and the multi-purpose ruler tip is 12° to 16°, so that the tips of the multi-purpose ruler tip, the first secondary ruler tip and the second secondary ruler tip can be at the same point, thereby calibrating the weld inspection ruler.

[0025] Furthermore, the width measuring notch can measure the width of the butt weld, expanding the function of the weld inspection ruler.

[0026] Furthermore, the measuring hole can measure the pore size, expanding the function of the weld inspection ruler.

[0027] The method for using the weld inspection ruler disclosed in the present invention is easy to operate, does not rely on the operator's experience and skill level, has complete functions, and can effectively improve work efficiency and the accuracy of measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the use state of the weld inspection ruler of the present invention for simultaneously measuring the thickness of the weld leg of the diagonal weld and the weld height on both sides;

[0030] Figure 3 A schematic diagram of the weld inspection ruler of the present invention in use for measuring the weld width of a butt weld;

[0031] Figure 4 The figure is a schematic diagram of the use state of the weld inspection ruler of the present invention for measuring the weld excess height of a butt weld.

[0032] In the figure, 1 is the main ruler, 1-1 is the first straight edge, 1-2 is the second straight edge, 1-3 is the third straight edge, 1-4 is the fourth straight edge, 1-5 is the bevel edge, 1-6 is the main ruler range scale, 1-7 is the measuring hole, 2 is the multi-purpose ruler, 2-1 is the multi-purpose ruler locking screw, 2-2 is the multi-purpose ruler strip hole, 2-3 is the multi-purpose ruler reference scale, 2-4 is the multi-purpose ruler range scale, 2-5 is the multi-purpose ruler tip, 2-6 is the width measurement mark, 3 is the first secondary ruler, 3-1 is the first secondary ruler The tip of the ruler is shown in Figure 1. 3-2 is the bar-shaped hole of the first secondary ruler, 3-3 is the tightening screw of the first secondary ruler, 3-4 is the fixing screw of the first secondary ruler, 3-5 is the reference scale line of the first secondary ruler, 3-6 is the range scale line of the first secondary ruler, 4 is the second secondary ruler, 4-1 is the tip of the second secondary ruler, 4-2 is the bar-shaped hole of the second secondary ruler, 4-3 is the tightening screw of the second secondary ruler, 4-4 is the fixing screw of the second secondary ruler, 4-5 is the reference scale line of the second secondary ruler, 4-6 is the range scale line of the second secondary ruler, and 5 is the sliding groove of the multi-purpose ruler. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0034] like Figure 1 , is a weld inspection ruler of the present invention, comprising a main ruler 1, a multi-purpose ruler 2, a first sub-rule 3 and a second sub-rule 4; the main ruler 1 is a square with missing corners formed by a first straight side 1-1, a second straight side 1-2, a third straight side 1-3, a fourth straight side 1-4 and a hypotenuse 1-5, and the lengths of the third straight side 1-3 and the fourth straight side 1-4 adjacent to the hypotenuse 1-5 are equal; the main ruler 1 is provided with a multi-purpose ruler slide 5 that passes through the hypotenuse 1-5; the multi-purpose ruler 2 is slidably connected in the multi-purpose ruler slide 5 and can be locked with the main ruler 1 by a multi-purpose ruler locking screw 2-1; the axis of the multi-purpose ruler 2 is colinear with the diagonal line of the main ruler 1 and is perpendicular to the hypotenuse 1-5; one end of the multi-purpose ruler 2 is provided with a multi-purpose ruler tip 2-5; the multi-purpose ruler 2 is provided with a multi-purpose ruler reference scale line 2-3, and the main ruler 1 adjacent to the multi-purpose ruler reference scale line 2-3 is provided with a multi-purpose ruler range scale line 2-4;

[0035] The first secondary ruler 3 and the second secondary ruler 4 are respectively arranged at the third straight edge 1-3 and the fourth straight edge 1-4, and are slidably connected with the main ruler 1, and can be locked with the main ruler 1 by tightening screws 3-3 and 4-3 of the first secondary ruler respectively; the first secondary ruler 3 is provided with a first secondary ruler reference scale line 3-5, and the main ruler 1 adjacent to the first secondary ruler reference scale line 3-5 is provided with a first secondary ruler range scale line 3-6; one end of the first secondary ruler 3 is provided with a first secondary ruler tip 3-1; the second secondary ruler 4 is provided with a second secondary ruler reference scale line 4-5, and the main ruler 1 adjacent to the second secondary ruler reference scale line is provided with a second secondary ruler range scale line 4-6; one end of the second secondary ruler 4 is provided with a second secondary ruler tip 4-1;

[0036] When the tips of the multi-rule tip 2-5, the first secondary ruler tip 3-1 and the second secondary ruler tip 4-1 are located at the intersection of the third straight edge 1-3 and the extension line of the fourth straight edge 1-4, the multi-rule reference scale line 2-3 is aligned with the zero scale line of the multi-rule range scale line 2-4, the first secondary ruler reference scale line 3-5 is aligned with the zero scale line of the first secondary ruler range scale line 3-6, and the second secondary ruler reference scale line 4-5 is aligned with the zero scale line of the second secondary ruler range scale line 4-6.

[0037] In a preferred embodiment of the present invention, the multi-purpose ruler 2 is provided with a multi-purpose ruler strip hole 2-2, and the multi-purpose ruler locking screw 2-1 passes through the multi-purpose ruler strip hole 2-2 to be connected to the main ruler 1; the first secondary ruler 3 is provided with a first secondary ruler strip hole 3-2, and the first secondary ruler tightening screw 3-3 passes through the first secondary ruler strip hole 3-2 to be connected to the main ruler 1; the second secondary ruler 4 is provided with a second secondary ruler strip hole 4-2, and the second secondary ruler tightening screw 4-3 passes through the second secondary ruler strip hole 4-2 to be connected to the main ruler 1.

[0038] Regarding the arrangement of the first secondary ruler 3 and the second secondary ruler 4, in one embodiment of the present invention, a first secondary ruler fixing screw 3-4 is inserted into the first secondary ruler strip hole 3-2, and the first secondary ruler fixing screw 3-4 is fixedly connected to the main ruler 1; a second secondary ruler fixing screw 4-4 is also inserted into the second secondary ruler strip hole 4-2, and the second secondary ruler fixing screw 4-4 is fixedly connected to the main ruler 1. In another embodiment of the present invention, a first secondary ruler slide groove and a second secondary ruler slide groove are respectively provided on the main ruler 1, the first secondary ruler 3 is slidably connected in the first secondary ruler slide groove, and the second secondary ruler 4 is slidably connected in the second secondary ruler slide groove.

[0039] In a preferred embodiment of the present invention, the length of the multi-purpose ruler 2 is shorter than the multi-purpose ruler slide 5 .

[0040] In a preferred embodiment of the present invention, the upper surfaces of the main ruler 1, the multi-purpose ruler 2, the first secondary ruler 3 and the second secondary ruler 4 are flush.

[0041] In a preferred embodiment of the present invention, the angles of the first secondary ruler tip 3-1 and the second secondary ruler tip 4-1 are 37° to 39°, and the angle of the multi-purpose ruler tip 2-5 is 12° to 16°.

[0042] In a preferred embodiment of the present invention, a plurality of width measuring notches 2-6 for measuring the width of the butt weld are provided on the tip 2-5 of the multi-purpose ruler along the axis of the multi-purpose ruler 2, and the width measuring notches 2-6 are perpendicular to the axis of the multi-purpose ruler 2.

[0043] In a preferred embodiment of the present invention, a plurality of measuring holes 1-7 for measuring the size of weld pores are provided on the main scale 1, and the diameters of the plurality of measuring holes 1-7 are not equal.

[0044] In a preferred embodiment of the present invention, a main scale range mark 1-6 is further provided on the side of the first straight edge 1-1 or the second straight edge 1-2.

[0045] The method of using the above-mentioned weld inspection ruler includes:

[0046] Place the third straight edge 1-3 and the fourth straight edge 1-4 in close contact with the two vertical planes of the welded part respectively, move the multi-rule 2, make the tip of the multi-rule tip 2-5 press against the fillet weld, and then tighten the multi-rule locking screw 2-1; move the first secondary ruler 3 and the second secondary ruler 4 respectively, make the tips of the first secondary ruler tip 3-1 and the second secondary ruler tip 4-1 press against the two edges of the fillet weld respectively, and tighten the first secondary ruler tightening screw 3-3 and the second secondary ruler tightening screw 4-3 respectively; the reading of the multi-rule reference scale line 2-3 on the multi-rule range scale line 2-4 is the fillet weld leg thickness, the reading of the first secondary ruler reference scale line 3-5 on the first secondary ruler range scale line 3-6 and the reading of the second secondary ruler reference scale line 4-5 on the second secondary ruler range scale line 4-6 are the weld leg heights on both sides of the fillet weld respectively.

[0047] Other functions include: measuring the weld width of butt welds, measuring the weld reinforcement of butt welds, measuring the groove gap width of butt plates, measuring the pore diameter of welds and measuring the undercut depth.

[0048] The weld inspection ruler of the present invention is further described below with a specific embodiment:

[0049] In this embodiment, the length of the first straight edge 1-1 and the second straight edge 1-2 is 80 mm, and the length of the third straight edge 1-3 and the fourth straight edge 1-4 is 50 mm. The main ruler 1 is provided with a multi-purpose ruler slide 5 perpendicular to the oblique edge 1-5 on the diagonal line. The multi-purpose ruler 2 is placed in the multi-purpose ruler slide 5 and can move freely. The upper surface of the multi-purpose ruler 2 is flush with the upper surface of the main ruler 1. There is a multi-purpose ruler locking screw 2-1 in the middle of the multi-purpose ruler slide 5 that passes through the multi-purpose ruler strip hole 2-2 on the multi-purpose ruler 2 and can be used to fix the position of the multi-purpose ruler 2. There are multi-purpose ruler reference scale lines 2-3 on the multi-purpose ruler 2, and there are multi-purpose ruler range scale lines 2-4 on the edge of the multi-purpose ruler slide 5. The multi-purpose ruler 2 One end is flush, and the other end is a multi-purpose ruler tip 2-5. The multi-purpose ruler tip 2-5 is respectively engraved with width measuring notches 2-6 at widths of 1mm, 2mm, 3mm, 4mm, and 5mm. The width measuring notches 2-6 are parallel to the hypotenuse 1-5. When the multi-purpose ruler tip 2-5 moves to the intersection of the third straight edge 1-3 and the fourth straight edge 1-4 (i.e., the missing vertex of the square), the multi-purpose ruler reference scale line 2-3 is exactly aligned with the multi-purpose ruler range scale line 2-4 zero scale line on the main ruler 1.

[0050] One side of the first secondary ruler 3 is flush with the third straight edge 1-3 of the main ruler 1, one end of the first secondary ruler 3 is flush, and the other end is a first secondary ruler tip 3-1 with an angle of 38°, a first secondary ruler strip hole 3-2 is provided in the middle of the first secondary ruler 3, a first secondary ruler tightening screw 3-3 and a first secondary ruler fixing screw 3-4 are provided in the first secondary ruler strip hole 3-2, a first secondary ruler reference scale line 3-5 is engraved on one side of the first secondary ruler 3, and a first secondary ruler reference scale line 3-6 is engraved on the adjacent main ruler 1, and when the first secondary ruler tip 3-1 is flush with the fourth straight edge 1-4, the first secondary ruler reference scale line 3-5 is aligned with the zero scale line of the first secondary ruler reference scale line 3-6.

[0051] One side of the second secondary scale 4 is flush with the fourth straight edge 1-4 of the main scale 1, one end of the second secondary scale 4 is flush, and the other end is a second secondary scale tip 4-1 with an angle of 38°, a second secondary scale strip hole 4-2 is provided in the middle of the second secondary scale 4, a second secondary scale tightening screw 4-3 and a second secondary scale fixing screw 4-4 are provided in the second secondary scale strip hole 4-2, a second secondary scale reference scale line 4-5 is engraved on one side of the second secondary scale 4, and a second secondary scale range scale line 4-6 is engraved on the adjacent main scale 1, when the second secondary scale tip 4-1 is flush with the third straight edge 1-3, the second secondary scale reference scale line 4-5 is aligned with the zero scale line of the second secondary scale range scale line 4-6.

[0052] The first straight edge 1-1 of the main scale 1 is engraved with a 60mm main scale range scale line 1-6, and the second straight edge 1-2 is provided with 2mm, 3mm, and 5mm measuring holes 1-7 below, which can be used to measure the size of pores on the weld.

[0053] The functions of the above-mentioned weld inspection ruler include but are not limited to the following:

[0054] 1) At the same time, the fillet weld leg thickness and weld height: Figure 2 , bring the third straight edge 1-3 and the fourth straight edge 1-4 of the weld inspection ruler into close contact with the two vertical planes of the welded part and fix them by hand, then move the multi-purpose ruler 2 of the weld inspection ruler to fit closely with the fillet weld and tighten the multi-purpose ruler locking screw 2-1, aligning the multi-purpose ruler reference scale line 2-3 with the 15.4mm of the multi-purpose ruler range scale line 2-4; then move the first sub-rule 3 and the second sub-rule 4 respectively, so that the tip 3-1 and the tip 4-1 of the first sub-rule are respectively in close contact with the two edges of the weld and tighten the first sub-rule tightening screws 3-3 and the second sub-rule tightening screws 4-3, aligning the first sub-rule reference scale line 3-5 with the first sub-rule range scale line 3-6 with 15mm, and aligning the second sub-rule reference scale line 4-5 with the second sub-rule range scale line 4-6 with 16mm. At this time, the measured thickness of the fillet weld leg is 15.4mm, the weld angle height on one side is 15mm, and the weld leg height on the other side is 16mm.

[0055] 2) Measure the weld width of the butt weld: Figure 3 , retract the multi-rule 2 and tighten the multi-rule locking screw 2-1; align the first secondary ruler reference scale line 3-5 with the 0 scale line of the first secondary ruler range scale line 3-6 and tighten the first secondary ruler tightening screw 3-3; then put the fourth straight edge 1-4 close to the plane of the parent material of the welded part to be tested, move the weld inspection ruler, align the tip of the first secondary ruler tip 3-1 with one side of the weld, and then move the second secondary ruler 4 to align the tip of the second secondary ruler tip 4-1 with the other side of the weld. At this time, align the second secondary ruler reference scale line 4-5 with the 16mm scale line of the second secondary ruler range scale line 4-6 and tighten the second secondary ruler tightening screw 4-3, then the weld width of the butt weld is 16mm.

[0056] 3) Measure the weld reinforcement of the butt weld: Figure 4 , retract the multi-purpose ruler 2 of the weld inspection ruler and tighten the multi-purpose ruler locking screw 2-1, make the fourth straight edge 1-4 close to the plane of the base material of the welded part to be tested, move the weld inspection ruler so that the tip of the first ruler tip 3-1 falls on the highest point of the weld and tighten the first ruler tightening screw 3-3. At this time, the first ruler reference scale line 3-5 is aligned with the 1.8mm scale line of the first ruler range scale line 3-6, and the weld excess height of the butt weld is 1.8mm.

[0057] 4) Measure the groove gap width of the butt-jointed plates: place the bevel 1-5 close to the upper plane of the butt-jointed plates, move the multi-purpose ruler 2 and insert it into the groove gap of the butt-jointed plates until the multi-purpose ruler 2 can no longer move. At this time, read the width measurement mark 2-6, which is the groove gap width of the butt-jointed plates.

[0058] 5) Measure the pore diameter of the weld: Place the side of the weld inspection ruler with measuring holes 1-7 close to the pore on the weld to compare the pore diameter to see if it exceeds the diameter of the measuring hole on the inspection ruler.

[0059] 6) Measure the bite depth: retract the multi-purpose ruler 2 of the weld inspection ruler and tighten the multi-purpose ruler locking screw 2-1, make the fourth straight edge 1-4 close to the plane of the base material of the weld to be tested, move the weld inspection ruler so that the tip of the first ruler tip 3-1 falls to the deepest position of the bite, tighten the first ruler tightening screw 3-3, at this time, the first ruler reference scale line 3-5 is aligned with the 1.8mm scale line of the first ruler range scale line 3-6, then the bite depth is 1.8mm.

[0060] It should be noted that the above is only one of the embodiments of the present invention, and equivalent changes made to the system described in the present invention are all included in the protection scope of the present invention. Those skilled in the art of the present invention can make similar substitutions for the specific examples described, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they are all within the protection scope of the present invention.

Claims

1. A weld inspection ruler, characterized in that: The invention comprises a main ruler (1), a multi-purpose ruler (2), a first sub-rule (3) and a second sub-rule (4); the main ruler (1) is a square with missing corners and has four straight sides and one hypotenuse (1-5); the third straight side (1-3) and the fourth straight side (1-4) adjacent to the hypotenuse (1-5) are of equal length; the main ruler (1) is provided with a multi-purpose ruler slide groove (5) passing through the hypotenuse (1-5); the multi-purpose ruler (2) is slidably connected in the multi-purpose ruler slide groove (5) , and can be locked with the main scale (1) by a multi-purpose scale locking screw (2-1); the axis of the multi-purpose scale (2) is colinear with the diagonal of the main scale (1) and perpendicular to the hypotenuse (1-5); a multi-purpose scale tip (2-5) is provided at one end of the multi-purpose scale (2); a multi-purpose scale reference scale line (2-3) is provided on the multi-purpose scale (2-3), and a multi-purpose scale range scale line (2-4) is provided on the main scale (1) adjacent to the multi-purpose scale reference scale line (2-3); The first secondary ruler (3) and the second secondary ruler (4) are respectively arranged at the third straight edge (1-3) and the fourth straight edge (1-4), and are slidably connected to the main ruler (1), and can be locked with the main ruler (1) by means of the first secondary ruler tightening screw (3-3) and the second secondary ruler tightening screw (4-3). The first secondary ruler (3) is provided with a first secondary ruler reference scale line (3-5), and the main ruler (1) adjacent to the first secondary ruler reference scale line (3-5) is provided with a first secondary ruler range scale line (3-6); one end of the first secondary ruler (3) is provided with a first secondary ruler tip (3-1); the second secondary ruler (4) is provided with a second secondary ruler reference scale line (4-5), and the main ruler (1) adjacent to the second secondary ruler reference scale line is provided with a second secondary ruler range scale line (4-6); one end of the second secondary ruler (4) is provided with a second secondary ruler tip (4-1); When the tips of the multi-purpose ruler tip (2-5), the first secondary ruler tip (3-1) and the second secondary ruler tip (4-1) are located at the intersection of the third straight edge (1-3) and the extension line of the fourth straight edge (1-4), the multi-purpose ruler reference scale line (2-3) is aligned with the zero scale line of the multi-purpose ruler range scale line (2-4), the first secondary ruler reference scale line (3-5) is aligned with the zero scale line of the first secondary ruler range scale line (3-6), and the second secondary ruler reference scale line (4-5) is aligned with the zero scale line of the second secondary ruler range scale line (4-6); The multi-purpose ruler (2) is provided with a multi-purpose ruler strip hole (2-2), and the multi-purpose ruler locking screw (2-1) passes through the multi-purpose ruler strip hole (2-2) to be connected to the main ruler (1); the first secondary ruler (3) is provided with a first secondary ruler strip hole (3-2), and the first secondary ruler tightening screw (3-3) passes through the first secondary ruler strip hole (3-2) to be connected to the main ruler (1); the second secondary ruler (4) is provided with a second secondary ruler strip hole (4-2), and the second secondary ruler tightening screw (4-3) passes through the second secondary ruler strip hole (4-2) to be connected to the main ruler (1); A first secondary scale fixing screw (3-4) is inserted into the first secondary scale strip hole (3-2), and the first secondary scale fixing screw (3-4) is fixedly connected to the main scale (1); a second secondary scale fixing screw (4-4) is also inserted into the second secondary scale strip hole (4-2), and the second secondary scale fixing screw (4-4) is fixedly connected to the main scale (1); A first secondary ruler slide groove and a second secondary ruler slide groove are respectively provided on the main ruler (1); the first secondary ruler (3) is slidably connected in the first secondary ruler slide groove, and the second secondary ruler (4) is slidably connected in the second secondary ruler slide groove; the angle between the first secondary ruler tip (3-1) and the second secondary ruler tip (4-1) is 37-39 degrees, and the angle of the multi-purpose ruler tip (2-5) is 12-16 degrees.

2. The weld inspection ruler according to claim 1, characterized in that: The length of the multi-purpose ruler (2) is shorter than the multi-purpose ruler chute (5).

3. The weld inspection ruler according to claim 1, characterized in that: The upper surfaces of the main ruler (1), the multi-purpose ruler (2), the first secondary ruler (3) and the second secondary ruler (4) are flush.

4. The weld inspection ruler according to claim 1, characterized in that: A plurality of width measuring notches (2-6) for measuring the width of the butt weld are arranged on the tip (2-5) of the multi-purpose ruler along the axis of the multi-purpose ruler (2), and the width measuring notches (2-6) are perpendicular to the axis of the multi-purpose ruler (2).

5. The weld inspection ruler according to claim 1, characterized in that: A plurality of measuring holes (1-7) for measuring the size of weld pores are provided on the main scale (1), and the diameters of the plurality of measuring holes (1-7) are unequal.

6. The method for using a weld inspection ruler according to any one of claims 1 to 5, characterized in that: include: The third straight edge (1-3) and the fourth straight edge (1-4) are respectively closely contacted with two vertical planes of the welded part, the multi-purpose ruler (2) is moved so that the tip of the multi-purpose ruler tip (2-5) is pressed against the fillet weld, and then the multi-purpose ruler locking screw (2-1) is tightened; the first secondary ruler (3) and the second secondary ruler (4) are respectively moved so that the tips of the first secondary ruler tip (3-1) and the second secondary ruler tip (4-1) are pressed against two edges of the fillet weld, and the first secondary ruler tightening screw (3-3) and the second secondary ruler tightening screw (4-3) are respectively tightened; the reading of the multi-purpose ruler reference scale line (2-3) on the multi-purpose ruler range scale line (2-4) is the fillet weld leg thickness, and the reading of the first secondary ruler reference scale line (3-5) on the first secondary ruler range scale line (3-6) and the reading of the second secondary ruler reference scale line (4-5) on the second secondary ruler range scale line (4-6) are the weld leg heights on both sides of the fillet weld.

Images