A large pipe diameter bend angle measurement and positioning tool

Abstract

The utility model relates to a kind of big pipe diameter elbow angle measurement and positioning tool, belong to pipeline measurement technical field, device includes support mechanism, rotatably installed in the measuring mechanism of support mechanism both ends, rotatably installed in the limiting mechanism of support mechanism intermediate position, fixed in the magnetic attraction ball of support mechanism both ends and installed in the positioning mechanism of magnetic attraction ball outside, the measuring mechanism is attached to positioning mechanism;The device can be used for accurately measuring the angle of small-angle large-pipe-diameter elbow within 15 °, using support mechanism, limiting mechanism and positioning mechanism cooperate and fix, then using measuring mechanism angle measurement, the elbow angle can be accurately measured;The positioning mechanism of the device on both sides of the elbow to be measured is connected with the measuring tool in the pipe by magnetic attraction, simple operation, and can be disassembled and retracted after use, easy to store and transport.

Description

Technical Field

[0001] This utility model relates to the field of pipeline measurement technology, specifically to a tool for measuring and locating the angle of a large-diameter pipe bend. Background Technology

[0002] In large-diameter pipeline construction, bends are typically prefabricated by the manufacturer. However, due to the springback phenomenon after bending, the actual bending angle deviates from the design drawings, necessitating angle measurement before construction. However, due to the large dimensions of large-diameter pipes, traditional protractors are unsuitable for accurate measurement of large-diameter bends, and the method of using a string line to measure angles has significant errors and cannot meet the measurement requirements. Furthermore, for large-diameter bent steel pipes, especially small-angle bends within 15°, the bending surface is often not clearly marked on the pipe material. During actual construction, deviations in the alignment of vertical and horizontal bends can easily occur, leading to problems such as pipe straightness and misalignment, resulting in need for finishing or rework, affecting construction efficiency and quality. Therefore, there is an urgent need for a tool capable of accurately measuring the angle of large-diameter bent steel pipes and precisely locating the bending surface to improve measurement accuracy and construction quality.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] In view of at least one of the above technical problems, this disclosure provides a tool for measuring and locating the angle of a large-diameter bend, which aims to solve the problem that existing measuring tools are difficult to accurately measure the angle of a large-diameter bend in steel pipes.

[0005] According to one aspect of this disclosure, a tool for measuring and positioning the angle of a large-diameter pipe bend is provided, comprising a support mechanism, a measuring mechanism rotatably mounted at both ends of the support mechanism, a limiting mechanism rotatably mounted at the middle position of the support mechanism, magnetic balls fixed at both ends of the support mechanism, and a positioning mechanism mounted on the outside of the magnetic balls, wherein the measuring mechanism is fitted to the positioning mechanism.

[0006] Furthermore, the support mechanism includes a fixed rod, a central groove formed in the middle of the fixed rod, and a telescopic rod 1 that is movably inserted through both ends of the fixed rod. The magnetic ball is fixed to the outer side of the outer end of the telescopic rod 1, and a bolt for limiting the telescopic rod 1 is also installed on the fixed rod.

[0007] Furthermore, the measuring mechanism includes a measuring rod symmetrically and rotatably mounted on the outer end of the telescopic rod, a second telescopic rod movably passing through the free end of the measuring rod, and a parallel block provided on the outer wall of the measuring rod. The measuring rod is also equipped with bolts for limiting the second telescopic rod.

[0008] Furthermore, the telescopic rod is also provided with an angle scale, and a measuring pointer corresponding to the angle scale is installed on the measuring rod.

[0009] Furthermore, the limiting mechanism includes a limiting rod rotatably installed in the central groove and a telescopic rod three movably passing through the free end of the limiting rod. The center of the limiting rod and the center of the fixed rod are on the same plane. The limiting rod is connected to the fixed rod by a stud and nut. The limiting rod is also equipped with a bolt for limiting the telescopic rod three.

[0010] Furthermore, the positioning mechanism includes multiple positioning rods connected at equal angles, a magnetic block embedded in the center of the inner side of the positioning rod, and a positioning groove formed inside the magnetic block. The positioning groove is movably covered by the magnetic ball, and the parallel block is attached to the inner side of the positioning rod. The magnetic block and the magnetic ball have a magnetic attraction. The positioning groove has a hemispherical structure, and the thickness of the parallel block is equal to the distance between the measuring rod and the positioning rod, thus ensuring that the measuring rod is always parallel to the positioning rod. A telescopic rod four is also movably inserted through the outer end of the positioning rod, and a length scale is formed on the outer side of the telescopic rod four. Bolts for limiting the telescopic rod four are also installed on the positioning rod. The telescopic rod four is made of magnetic material and can be magnetically fixed to the outside of the bent pipe to be measured.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] 1. The device of this application can be used to accurately measure the angle of a large-diameter bend with a small angle within 15°. It is fixed by using a support mechanism, a limiting mechanism and a positioning mechanism, and then the measuring mechanism is rotated to measure the angle, which can accurately measure the bend angle.

[0013] 2. The device of this application utilizes a limiting mechanism in conjunction with multiple rods to quickly locate the bending surface of the pipe to be measured, thereby enabling more accurate measurement of the angle.

[0014] 3. In the device of this application, the positioning mechanisms on both sides of the bend to be tested are connected to the measuring tool inside the pipe by magnetic attraction. The operation is simple and the device can be disassembled and retracted after use, making it easy to store and transport. Attached Figure Description

[0015] Figure 1 This is a front view of the measuring tool in this utility model;

[0016] Figure 2 for Figure 1 Enlarged diagram of section A in the middle;

[0017] Figure 3 This is a schematic diagram illustrating the use of the measuring tool in this utility model;

[0018] Figure 4 This is a partial structural schematic diagram of the measuring tool in this utility model;

[0019] Figure 5 This is a schematic diagram of the positioning mechanism in this utility model;

[0020] Figure 6 This is a schematic diagram of the positioning mechanism in this utility model from another direction.

[0021] In the above figures, 1. Support mechanism; 11. Fixed rod; 12. Telescopic rod one; 121. Angle scale; 13. Center groove; 2. Measuring mechanism; 21. Measuring rotating rod; 211. Measuring pointer; 22. Telescopic rod two; 23. Parallel block; 3. Limiting mechanism; 31. Limiting rod; 32. Telescopic rod three; 4. Positioning mechanism; 41. Positioning rod; 42. Telescopic rod four; 43. Magnetic block; 44. Positioning groove; 45. Length scale; 5. Magnetic ball; 6. Bent pipe to be measured. Detailed Implementation

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first," "second," etc., used in this application are used to distinguish the described objects and do not have any sequential or technical meaning. And the terms "connection" and "linkage," unless otherwise specified, include both direct and indirect connections (linkages).

[0023] This application provides a tool for measuring and locating the angle of large-diameter bends, which solves the problem that existing measuring tools are difficult to accurately measure the angle of large-diameter bends in steel pipes. To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] This example discloses a tool for measuring and locating the angle of a large-diameter bend. (See also...) Figures 1-6 The device includes a support mechanism 1, a measuring mechanism 2 rotatably mounted at both ends of the support mechanism 1, a limiting mechanism 3 rotatably mounted at the middle position of the support mechanism 1, magnetic balls 5 fixed at both ends of the support mechanism 1, and a positioning mechanism 4 mounted on the outside of the magnetic balls 5. The measuring mechanism 2 is attached to the positioning mechanism 4.

[0025] The support mechanism 1 includes a fixed rod 11, a central groove 13 formed in the middle of the fixed rod 11, and telescopic rods 12 movably passing through both ends of the fixed rod 11. Magnetic balls 5 are fixed to the outer side of the outer end of the telescopic rods 12. Bolts for limiting the telescopic rods 12 are also installed on the fixed rod 11. The measuring mechanism 2 includes a measuring rotating rod 21 symmetrically and rotatably mounted on the outer end of the telescopic rods 12, a second telescopic rod 22 movably passing through the free end of the measuring rotating rod 21, and a parallel block 23 provided on the outer wall of the measuring rotating rod 21. Bolts for limiting the second telescopic rod 22 are also installed on the measuring rotating rod 21. An angle scale 121 is also provided on the telescopic rod 12, and a measuring pointer 211 corresponding to the angle scale 121 is installed on the measuring rotating rod 21.

[0026] The limiting mechanism 3 includes a limiting rod 31 rotatably installed in the central groove 13 and a telescopic rod 32 movably passing through the free end of the limiting rod 31. The center of the limiting rod 31 and the center of the fixed rod 11 are on the same plane. The limiting rod 31 is connected to the fixed rod 11 by a stud and nut. The limiting rod 31 is also equipped with a bolt for limiting the telescopic rod 32.

[0027] The positioning mechanism 4 includes multiple positioning rods 41 connected at equal angles, a magnetic block 43 embedded in the center of the inner side of the positioning rod 41, and a positioning groove 44 opened inside the magnetic block 43. The positioning groove 44 is movably covered around the magnetic ball 5. The parallel block 23 is attached to the inner side of the positioning rod 41. The magnetic block 43 and the magnetic ball 5 have a magnetic attraction. The positioning groove 44 has a hemispherical structure. The thickness of the parallel block 23 is equal to the distance between the measuring rotating rod 21 and the positioning rod 41, which can ensure that the measuring rotating rod 21 is always parallel to the positioning rod 41. A telescopic rod 42 is also movably inserted through the outer end of the positioning rod 41. A length scale 45 is opened on the outer side of the telescopic rod 42. Bolts for limiting the telescopic rod 42 are also installed on the positioning rod 41. The telescopic rod 42 is made of magnet material and can be magnetically fixed to the outer side of the bent pipe 6 to be measured.

[0028] Working principle: When implementing the device of this application, first adjust the limiting rod 31 to be perpendicular to the fixing rod 11, and then fix the limiting rod 31 with the installed nut. After fixing, place the measuring tool inside the tube 6 to be measured. Then, place the positioning mechanism 4 against the cross-sections on both sides of the tube 6 to be measured. When placing, pay attention to the magnetic block 43 facing the inside of the tube, and the center of the positioning mechanism 4 must always be at the center of the cross-section of the tube. Specifically, first adjust the extension length of the telescopic rod 42 and fix it with bolts. Then, use the magnetic attraction between the telescopic rod 42 and the tube 6 to be measured to magnetically attract the positioning mechanism 4 to the outside of the tube 6. After placement, the position of the positioning mechanism 4 can be adjusted according to the length scale 45 on the telescopic rod 42. When the numbers on the inner wall of the tube coincide with each length scale 45, the center of the positioning mechanism 4 coincides with the center of the cross-section. Then, continuously adjust... Telescopic rods 12 at both ends of telescopic fixed rod 11 are extended until the magnetic ball 5 is magnetically attracted into the positioning groove 44. The telescopic rod 12 is then fixed to the fixed rod 11 by bolts. Then, the angle between the measuring mechanism 2 and the positioning mechanism 4 is adjusted by rotating the positioning mechanism 4 so that the parallel block 23 is always in contact with the inner side of one of the positioning rods 41. Then, the bending surface of the bend to be measured 6 is determined. When determining, the measuring device is first rotated around the center of the cross section. During the rotation, the telescopic rod 32 is adjusted so that its outer end is always in contact with the inner wall of the bend to be measured 6 until the telescopic rod 32 is extended to its longest state. The rotation is then stopped, and the telescopic rod 32 is fixed in the limiting rod 31 by bolts. Next, the parallel block 23 is determined to be in contact with the inner wall of the positioning rod 41, and the telescopic rod 22 is adjusted until its end is in contact with the inner wall of the bend to be measured 6. The telescopic rod 22 is fixed in the measuring rotating rod 21 by bolts. After fixing, mark the contact point between the end of the telescopic rod 22 and the inner wall of the bend 6 to be tested with a marker. Based on the relative position of the marked points and the telescopic rod 42, mark the inner wall of the bend 6 to be tested at three other locations near the telescopic rod 42. Similarly, mark four more crosses at the other end of the pipe opening, marking the curved surfaces and the surfaces perpendicular to the curved surfaces of the two pipe openings. During construction, the bend can be positioned and assembled according to the marked directions, ensuring the accuracy of the bend assembly during construction. Finally, read the angle at which the measuring pointers 211 on both sides coincide with the angle scale 121. The sum of the angles at both ends is the bend angle. For the angle scale 121, when the measuring rod 21 is perpendicular to the telescopic rod 12, the angle at which the measuring pointer 211 coincides with the angle scale 121 is 0°. As the measuring pointer 211 rotates clockwise, the angle continuously increases.

[0029] Although some preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0030] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations of this invention fall within the scope of the claims of this application and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A tool for measuring and positioning the angle of a large-diameter pipe bend, comprising a support mechanism (1), characterized in that, It also includes a measuring mechanism (2) rotatably mounted at both ends of the support mechanism (1), a limiting mechanism (3) rotatably mounted at the middle position of the support mechanism (1), a magnetic ball (5) fixed at both ends of the support mechanism (1), and a positioning mechanism (4) mounted on the outside of the magnetic ball (5), wherein the measuring mechanism (2) is attached to the positioning mechanism (4).

2. The large-diameter pipe bend angle measuring and positioning tool according to claim 1, characterized in that, The support mechanism (1) includes a fixed rod (11), a central groove (13) opened in the middle of the fixed rod (11), and a telescopic rod (12) that is movably inserted through both ends of the fixed rod (11). The magnetic ball (5) is fixed on the outer side of the outer end of the telescopic rod (12).

3. The tool for measuring and positioning large-diameter pipe bend angles according to claim 2, characterized in that, The measuring mechanism (2) includes a measuring rod (21) symmetrically and rotatably mounted on the outer end of the telescopic rod (12), a telescopic rod (22) movably passing through the free end of the measuring rod (21), and a parallel block (23) provided on the outer wall of the measuring rod (21).

4. The large-diameter pipe bend angle measuring and positioning tool according to claim 3, characterized in that, The telescopic rod (12) is also provided with an angle scale (121), and the measuring rod (21) is equipped with a measuring pointer (211) corresponding to the angle scale (121).

5. The large-diameter pipe bend angle measuring and positioning tool according to claim 2, characterized in that, The limiting mechanism (3) includes a limiting rod (31) rotatably installed in the central groove (13) and a telescopic rod (32) movably passing through the free end of the limiting rod (31).

6. The large-diameter pipe bend angle measuring and positioning tool according to claim 3, characterized in that, The positioning mechanism (4) includes multiple positioning rods (41) connected at equal angles, a magnetic block (43) embedded in the center of the inner side of the positioning rod (41), and a positioning groove (44) opened inside the magnetic block (43). The positioning groove (44) is movably covered around the magnetic ball (5), and the parallel block (23) is attached to the inner side of the positioning rod (41).

7. The large-diameter pipe bend angle measuring and positioning tool according to claim 6, characterized in that, The outer end of the positioning rod (41) is also movably connected to a telescopic rod four (42), and a length scale (45) is also provided on the outer side of the telescopic rod four (42).

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