An automatic pipe welding bevel measuring ruler

Abstract

This utility model relates to the field of pipe beveling measurement technology, specifically to an automatic pipe welding beveling measuring ruler. It includes a flat ruler with grooves on both sides. The left end of the flat ruler above the left groove has a first inclined surface, and the right end of the flat ruler above the right groove has a second inclined surface. The lower end of the first inclined surface and the upper wall of the left groove are connected by an upper rounded corner, and the lower end of the second inclined surface and the upper wall of the right groove are also connected by an upper rounded corner. The radii of the upper rounded corners on both sides are the same. Multiple slots are machined on the outer side of the flat ruler below the grooves, with the width of the slots increasing sequentially. Lower rounded corners are machined on both sides of the lower end of the flat ruler, with different radii for the two lower rounded corners. Through the double-inclined-surface design, the unified upper rounded corner, and the differentiated lower rounded corner, it can simultaneously meet the requirements for rapid comparative measurement of different beveling angles and root radii, solving the problem of traditional tools requiring multiple replacements or stacking.

Description

Technical Field

[0001] This utility model relates to the field of pipe beveling measurement technology, specifically to an automatic pipe welding beveling measuring ruler. Background Technology

[0002] Automatic pipeline welding technology is increasingly widely used in long-distance pipeline projects, refining and chemical plant projects, and other fields due to its high efficiency, good quality, and simple operation. However, it suffers from insufficient process flexibility, high requirements for the machining accuracy of weld bevels, and stringent requirements for bevel size measurement. The dimensions of the bevel in automatic argon arc welding consist of eight sets of data. Currently, conventional bevel size measurement requires the use of measuring tools such as vernier calipers, knife-edge rulers, rounding gauges, universal protractors, and welding inspection gauges. This method is costly, cumbersome, susceptible to human interference, and the measuring tools are inconvenient to carry and prone to damage or loss.

[0003] Patent document CN202676070U discloses a measuring device for the blunt edge of an API pipeline, including a measuring gauge plate. The measuring gauge plate comprises a first measuring section on the left and a second measuring section on the right. The edge of the first measuring section forms a first straight surface, the upper end of which is connected to a first upper inclined surface, and the lower end of which is connected to a first lower inclined surface. The edge of the second measuring section forms a second straight surface, the upper end of which is connected to a second upper inclined surface, and the lower end of which is connected to a second lower inclined surface. The first upper inclined surface slopes towards the first lower inclined surface, and the second upper inclined surface slopes towards the second lower inclined surface. The inclination angles of the first and second upper inclined surfaces are consistent with the angle of the bevel at the end of the pipeline. The width of the first straight surface is equal to the minimum width of the blunt edge of the pipeline, and the width of the second straight surface is equal to the maximum width of the blunt edge of the pipeline. This technical solution achieves rapid determination of whether the blunt edge is qualified by changing the measuring surface of the gauge plate, but it cannot effectively measure the radius of the bevel root on the pipeline.

[0004] Patent document CN205209398U discloses a rapid inspection gauge for pipe bevels, comprising a gauge body in the shape of a rectangular thin sheet, one side of which is a bevel. Two rectangular notches are formed on the gauge body, each parallel to the bottom edge, with the openings of the notches facing the bevel. A protrusion I is formed between the two rectangular notches, the height of which is lower than the extension line of the bevel. This gauge, using a single measuring tool, can simultaneously measure several key dimensions for automatic welding, including the bevel angle, blunt edge height, arc length and height, and inner bevel height. However, this measuring gauge cannot perform comparative measurements on the root radius of the pipe bevel. Utility Model Content

[0005] The main objective of this invention is to provide an automatic pipe bevel measuring ruler capable of quickly comparing and measuring bevels. This measuring ruler has multiple rounded corners of different sizes, enabling the measurement of the root radius of different pipe bevels. It also features multiple slots for measuring the blunt edge, facilitating comparative measurement of the blunt edge thickness.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] An automatic pipe welding bevel measuring ruler includes a flat ruler with grooves on both sides. A first inclined surface is machined on the left end of the flat ruler above the left groove, and a second inclined surface is machined on the right end of the flat ruler above the right groove. The first and second inclined surfaces have different inclination angles. The lower ends of both the first and second inclined surfaces slope towards the center of the flat ruler. The lower end of the first inclined surface and the upper wall of the left groove are connected by an upper rounded corner, and the lower end of the second inclined surface and the upper wall of the right groove are also connected by an upper rounded corner. The radii of the upper rounded corners on both sides are the same. Multiple slots are machined on the outer side of the flat ruler below the grooves, with the width of the slots increasing sequentially. Lower rounded corners are machined on both the left and right sides of the lower end of the flat ruler, with different radii.

[0008] Specifically, the angle between the first inclined plane and the vertical plane is 5°, and the angle between the second inclined plane and the vertical plane is 3°.

[0009] Specifically, the radius of the upper rounded corner is 2.4 mm.

[0010] Specifically, the radius of the lower rounded corner on the left is 1.6mm, and the radius of the lower rounded corner on the right is 3.2mm.

[0011] Specifically, scale lines are provided on the upper horizontal direction of both the front and rear sides of the flat ruler.

[0012] Specifically, the flat ruler is made of stainless steel plate.

[0013] Specifically, the narrowest slot is closer to the left groove, and the widest slot is closer to the right groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Through the double-sloping surface design, unified upper rounded corner and differentiated lower rounded corner, it can simultaneously meet the rapid comparison measurement of different bevel angles and root radii, solving the problem of traditional tools needing to be replaced or used in combination multiple times.

[0016] 2. The stepped, incrementally wide slot design supports intuitive comparison and measurement of blunt edge thickness. During operation, simply insert the blunt edge into the matching slot to complete the judgment, significantly reducing human reading errors and operational complexity.

[0017] 3. The flat ruler has graduation lines on its surface. Combined with the characteristics of stainless steel, it not only ensures the stability of measurement accuracy, but also improves the wear resistance of the tool, making it suitable for harsh construction site environments.

[0018] 4. The design of the bevel and the upper rounded corner are designed to fit the geometric features of the bevel, ensuring that there are no gaps in the contact surface during measurement, avoiding misjudgment caused by poor fit between the tool and the bevel, and improving the reliability of the test.

[0019] 5. By integrating multiple functions such as traditional vernier calipers, angle gauges, and fillet gauges into a single tool, the number of tools carried is greatly reduced, lowering procurement and maintenance costs, while simplifying the operation process and improving construction efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the measuring ruler.

[0021] Figure 2 This is a schematic diagram for comparative measurement of a bevel with a bevel angle of 3° and a root radius of 2.4 mm.

[0022] Figure 3 This is a schematic diagram for comparative measurement of a bevel with a bevel angle of 5° and a root radius of 2.4 mm.

[0023] Figure 4 This is a schematic diagram for measuring the thickness of the bevel blunt edge.

[0024] Figure 5 This is a schematic diagram for measuring the width of a single-sided opening in a bevel.

[0025] Figure 6 This is a schematic diagram of directly measuring the radius of the bevel root using the lower fillet.

[0026] The parts in the attached diagram are named as follows: 1. Flat ruler, 2. Groove, 3. First inclined surface, 4. Second inclined surface, 5. Slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1: Refer to Figure 1 As shown, an automatic pipe welding bevel measuring ruler includes a flat ruler 1, which is made of stainless steel plate.

[0029] The flat ruler 1 has grooves 2 on both its left and right sides. A first inclined surface 3 is machined on the left end of the flat ruler 1 above the groove 2 on the left side. A second inclined surface 4 is machined on the right end of the flat ruler 1 above the groove 2 on the right side. The first inclined surface 3 and the second inclined surface 4 have different inclination angles, and the lower ends of both the first inclined surface 3 and the second inclined surface 4 are inclined towards the center of the flat ruler 1. The lower end of the first inclined surface 3 is connected to the upper wall of the groove 2 on the left side by a rounded corner. The lower end of the second inclined surface 4 is connected to the upper wall of the groove 2 on the right side by a rounded corner. The radii of the rounded corners on both sides are the same.

[0030] The angle between the first inclined plane 3 and the vertical plane is 5°, and the angle between the second inclined plane 4 and the vertical plane is 3°. The radius of the upper fillet is 2.4mm.

[0031] Multiple slots 5 are machined on the outer side of the flat ruler 1 below the groove 2, with the width of the slots 5 increasing sequentially. The narrowest slot 5 is closer to the left groove 2, and the widest slot 5 is closer to the right groove 2.

[0032] The bottom of the flat ruler 1 has rounded corners on both the left and right sides, and the radii of the two rounded corners are different.

[0033] The radius of the lower fillet on the left is 1.6mm, and the radius of the lower fillet on the right is 3.2mm.

[0034] The upper horizontal surfaces of both the front and rear sides of the flat ruler 1 are marked with graduation lines.

[0035] Example 2: Based on Example 1, referring to... Figure 2 As shown, when comparing and measuring a bevel with a bevel angle of 3° and a root radius of 2.4mm, the second inclined surface 4 should be in close contact with the bevel surface of the bevel, and the upper rounded corner on the right should be in close contact with the root of the bevel. If the second inclined surface 4 and the lower rounded corner on the right are in close contact with the bevel of the pipe, then the bevel is qualified.

[0036] Example 3: Based on Example 1, referring to... Figure 3 As shown, when comparing and measuring a bevel with a bevel angle of 5° and a root radius of 2.4mm, the first inclined surface 3 is made to be in close contact with the bevel surface of the bevel, and the upper rounded corner on the left side is made to be in close contact with the root of the bevel. If the first inclined surface 3 and the lower rounded corner on the left side are in close contact with the bevel of the pipe, then the bevel is qualified.

[0037] Example 3: Based on Example 1, referring to... Figure 4 As shown, when it is necessary to measure the thickness of the blunt edge, the blunt edge is inserted into the slot 5 with the same width as the required thickness of the blunt edge. If the wall of the slot 5 fits tightly with the blunt edge, the thickness of the blunt edge is qualified.

[0038] Example 4: Based on Example 1, referring to... Figure 5As shown, when measuring the width of a single bevel opening, the upper end of the flat ruler 1 should be placed tightly against the outer edge of the pipe, and the intersection of the bevel surface and the outer edge of the pipe should be aligned with the zero line on the flat ruler 1. The value of the corresponding scale line on the flat ruler 1 at the far end of the blunt edge is the width of the single bevel opening. Figure 5 In the figure, the distance 'a' from the intersection of the bevel face and the outer edge of the pipe to the far end of the blunt side is the single-sided opening width of the bevel.

[0039] Example 5: Based on Example 1, referring to... Figure 6 As shown, when it is necessary to directly measure the radius of the bevel root, if the processing requirement for the radius of the bevel root is 1.6mm, then the lower fillet with a radius of 1.6mm should be tightly attached to the bevel root. If the lower fillet can be tightly attached to the bevel root, then the radius of the bevel root is qualified.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipe automatic bevel measuring scale comprising a flat scale (1), characterized in that, The flat ruler (1) has grooves (2) on both the left and right sides. The left end of the flat ruler (1) above the groove (2) on the left side has a first inclined surface (3), and the right end of the flat ruler (1) above the groove (2) on the right side has a second inclined surface (4). The first inclined surface (3) and the second inclined surface (4) have different inclination angles. The lower ends of the first inclined surface (3) and the second inclined surface (4) are both inclined towards the center of the flat ruler (1). The lower end of the first inclined surface (3) and the upper wall of the groove (2) on the left side are connected by an upper rounded corner. The lower end of the second inclined surface (4) and the upper wall of the groove (2) on the right side are connected by an upper rounded corner. The upper rounded corner radii on the left and right sides are the same. Multiple slots (5) are processed on the outside of the flat ruler (1) below the groove (2). The width of the slots (5) increases sequentially. The lower ends of the flat ruler (1) have lower rounded corners on both the left and right sides. The radii of the two lower rounded corners are different.

2. The automatic pipe welding bevel measuring scale according to claim 1, characterized in that, The angles between the first inclined plane (3) and the second inclined plane (4) and the vertical plane are 5° and 3°, respectively.

3. The automatic pipe bevel welding gauge of claim 1, wherein, The radius of the upper fillet is 2.4 mm.

4. The pipe automatic bevel measuring gauge according to claim 1, wherein, The radius of the lower rounded corner on the left is 1.6 mm, and the radius of the lower rounded corner on the right is 3.2 mm.

5. The pipe automatic bevel measuring gauge according to claim 1, wherein, The flat ruler (1) has scale lines on the upper horizontal direction of both the front and rear sides.

6. The pipe automatic bevel measuring gauge according to claim 1, wherein, The flat ruler (1) is made of stainless steel plate.

7. The pipe automatic bevel measuring gauge according to claim 1, wherein, The narrowest slot (5) is closer to the left groove (2), and the widest slot (5) is closer to the right groove (2).

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