An auxiliary line forming apparatus

Abstract

This application provides an auxiliary line forming device to reduce the difficulty of drawing auxiliary lines. The auxiliary line forming device includes a clamping pipe and a clamping device. The clamping pipe is for a mounting pipe to pass through, and has positioning holes through which auxiliary lines can be formed on the side wall of the mounting pipe. The clamping device includes a first clamping frame and a second clamping frame. The distance between the first clamping frame and the second clamping frame is adjustable in the radial direction of the clamping pipe. Both the first and second clamping frames pass through the clamping pipe and are used to fix the mounting pipe. By bringing the first and second clamping frames close together, the mounting pipe is fixed inside the clamping pipe. Then, auxiliary lines are drawn on the mounting pipe through the positioning holes provided on the clamping pipe, ensuring that the auxiliary lines do not shift during the drawing process and reducing the difficulty of drawing auxiliary lines.

Description

Technical Field

[0001] This application relates to the field of pipeline technology, and more particularly to an auxiliary line forming device. Background Technology

[0002] Chemical automation instruments need to be installed in corresponding pipelines to perform pipeline monitoring. This requires drilling holes in the pipeline corresponding to the instrument's location to facilitate installation. When drilling these holes, auxiliary lines need to be drawn on the outer wall of the pipeline. However, because the outer wall of the pipeline is curved, drawing these auxiliary lines is difficult. Summary of the Invention

[0003] This application provides an auxiliary line forming device, which aims to reduce the difficulty of drawing auxiliary lines.

[0004] An auxiliary line forming device provided in this application includes a clamping pipe and a clamping device. The clamping pipe is used for the installation pipe to pass through, and the clamping pipe is provided with positioning holes. An auxiliary line can be formed on the side wall of the installation pipe through the positioning holes. The clamping device includes a first clamping frame and a second clamping frame. The first clamping frame and the second clamping frame are spaced apart along the radial direction of the clamping pipe. The distance between the first clamping frame and the second clamping frame in the radial direction of the clamping pipe is adjustable. Both the first clamping frame and the second clamping frame pass through the clamping pipe and are used to fix the installation pipe.

[0005] The auxiliary line forming device provided in this application includes a clamping pipe and a clamping device. The clamping pipe is for the installation pipe to pass through, and has positioning holes through which auxiliary lines can be formed on the side wall of the installation pipe. The clamping device includes a first clamping frame and a second clamping frame, which are spaced apart along the radial direction of the clamping pipe. The distance between the first and second clamping frames in the radial direction of the clamping pipe is adjustable. Both the first and second clamping frames pass through the clamping pipe and are used to fix the installation pipe. By bringing the first and second clamping frames close together, the installation pipe is fixed inside the clamping pipe. Then, auxiliary lines are drawn on the installation pipe through the positioning holes provided on the clamping pipe to ensure that the auxiliary lines do not shift during the drawing process, reducing the difficulty of drawing the auxiliary lines.

[0006] In some embodiments, the clamping pipe is further provided with a first limiting hole and a second limiting hole. The first limiting hole and the second limiting hole are located on both sides of the clamping pipe, respectively. The first limiting hole and the positioning hole are spaced apart along the axial direction of the clamping pipe. The first clamping frame passes through the clamping pipe through the first limiting hole, and the second clamping frame passes through the clamping pipe through the second limiting hole.

[0007] With the above settings, the first clamping frame passes through the first limiting hole and the clamping pipe, and the second clamping frame passes through the second limiting hole and the clamping pipe. This ensures that after the clamping device is used to fix the pipe, the axial direction of the installed pipe and the axial direction of the clamping pipe are the same, so that the auxiliary line will not be deviated during the drawing process.

[0008] In some embodiments, in the radial direction of the clamping pipe, the clamping pipe includes a first pipe portion and a second pipe portion, which are detachably connected; a positioning hole and a first limiting hole are provided on the first pipe portion, and a second limiting hole is provided on the second pipe portion.

[0009] With the above configuration, the first pipe section and the second pipe section can be detachably connected, making it easy to fit the clamping pipe onto the outside of the installed pipe.

[0010] In some embodiments, the first clamping frame includes a first clamping rod, the second clamping frame includes a second clamping rod, the first clamping rod and the second clamping rod extend in the same direction, the first clamping rod passes through the first limiting hole, and the second clamping rod passes through the second limiting hole.

[0011] In some embodiments, the second clamping rod has a roller at one end of the clamping pipe, and the axial direction of the roller is perpendicular to the axial direction of the clamping pipe.

[0012] With the above setup, the rollers are used to contact the installation pipe. After the installation pipe passes through the clamping pipe, the rollers can reduce the friction between the installation pipe and the second clamping frame, facilitating the movement of the clamping pipe along the axial direction of the installation pipe. After the first and second clamping rods fix the installation pipe inside the clamping pipe, and an auxiliary line is drawn through the positioning hole, the first and second clamping frames can be moved away from each other and the clamping pipe can be moved along the axial direction of the installation pipe so that the positioning ring corresponds to another position. The installation pipe is then fixed by the first and second clamping rods, facilitating the drawing of multiple auxiliary lines at different positions on the same installation pipe.

[0013] In some embodiments, a first limiting structure is provided on the first pipe portion, and a second limiting structure is provided on the second pipe portion. The first limiting structure and the second limiting structure form an annular structure around the axial direction of the clamping pipe. The auxiliary line forming device further includes a limiting ring, which is sleeved outside the first limiting structure and the second limiting structure.

[0014] With the above configuration, the limiting ring can fix the relative position of the first pipe section and the second pipe section, realizing a detachable connection between the first pipe section and the second pipe section. During the use of the auxiliary line forming equipment, the first pipe section and the second pipe section are respectively fastened to the outside of the installed pipe, and then the limiting ring is sleeved on the outside of the first limiting structure and the second limiting structure to fix the relative position of the first pipe section and the second pipe section.

[0015] In some embodiments, the auxiliary line forming device further includes a telescopic mechanism, one end of which is connected to a first clamping frame and the other end of which is connected to a second clamping frame; the telescopic mechanism is used to allow the first clamping frame and the second clamping frame to move closer to or further away from each other along the radial direction of the clamping pipe.

[0016] With the above settings, by adjusting the first clamping frame and the second clamping frame to move closer to each other using the telescopic mechanism, the first clamping frame and the second clamping frame can fix the installation pipe inside the clamping pipe; by adjusting the first clamping frame and the second clamping frame to move further apart using the telescopic mechanism, the first clamping frame and the second clamping frame can release the installation pipe, making it easier to separate the clamping pipe and the installation pipe, or adjust the relative position of the clamping pipe and the installation pipe.

[0017] In the above embodiments, the telescopic mechanism includes a first connecting rod, a second connecting rod, and a connecting tube; one end of the first connecting rod is connected to the first clamping frame, and the other end of the first connecting rod is located inside the connecting tube; one end of the second connecting rod is connected to the second clamping frame, and the other end of the second connecting rod is located inside the connecting tube; the first connecting rod is provided with a first thread, and the second connecting rod is provided with a second thread, the helical directions of the first thread and the second thread being opposite.

[0018] In some embodiments, the auxiliary line forming apparatus further includes a positioning ring, which may be located within a positioning hole, with its outer wall fitting against the inner wall of the positioning hole. Multiple positioning rings may be provided, with the outer wall dimensions of the multiple positioning rings being the same, but their inner wall dimensions being different.

[0019] With the above settings, the positioning ring can be located inside the positioning hole, and the outer wall of the positioning ring fits against the inner wall of the positioning hole. Auxiliary lines can be drawn along the inner wall of the positioning ring. Since multiple positioning rings can be provided, and the inner wall dimensions of the multiple positioning rings are different, during the process of drawing auxiliary lines, positioning rings with corresponding inner wall dimensions can be selected and installed in the positioning hole to draw auxiliary lines of different sizes, thereby improving the applicability of the auxiliary line forming device.

[0020] In some embodiments, the auxiliary line forming apparatus further includes a calibration mechanism, which includes a calibration rod and a calibration block. One end of the calibration rod is movably connected to a first clamping frame. The calibration block is disposed on a second clamping frame and has a groove for accommodating the calibration rod. When the first clamping frame and the second clamping frame are arranged along the radial direction of the clamping pipe, the calibration rod is partially located in the groove of the calibration block.

[0021] The above settings ensure that the arrangement direction of the first clamping frame and the second clamping frame is perpendicular to the axial direction of the clamping pipe, thereby ensuring that the arrangement direction of the first clamping frame and the second clamping frame is perpendicular to the axial direction of the installed pipe, thus ensuring that the auxiliary lines will not be deviated during the drawing process and reducing the difficulty of drawing the auxiliary lines. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the auxiliary line forming device in the embodiments of this application;

[0023] Figure 2 This is a partial structural schematic diagram of the auxiliary line forming device in the embodiments of this application.

[0024] Reference numerals: 100, Auxiliary line forming device; 10, Clamping pipe; 101, Positioning hole; 110, First limiting hole; 120, Second limiting hole; 11, First pipe section; 111, First limiting structure; 12, Second pipe section; 121, Second limiting structure; 13, Limiting ring; 20, Clamping device; 21, First clamping frame; 211, First clamping rod; 22, Second clamping frame; 221, Second clamping rod; 220, Roller; 30, Telescopic mechanism; 31, First connecting rod; 32, Second connecting rod; 33, Connecting pipe; 40, Positioning ring; 50, Calibration mechanism; 51, Calibration rod; 52, Calibration block. Detailed Implementation

[0025] To better understand the technical solutions provided in the embodiments of this specification, the technical solutions of the embodiments of this specification will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0026] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. The term "two or more" includes two or more cases.

[0027] This application provides an auxiliary line forming device 100 for drawing auxiliary lines on installation pipelines. In some embodiments, it is necessary to install chemical automation instruments on corresponding installation pipelines to monitor the pipelines. Therefore, before installing the chemical automation instruments, auxiliary lines need to be drawn on the installation pipeline to facilitate the creation of holes corresponding to the interfaces of the chemical automation instruments, thereby making it easier to install the instruments on the pipeline.

[0028] The auxiliary line forming device 100 provided in this application embodiment includes a clamping pipe 10 and a clamping device 20. The clamping pipe 10 is for a mounting pipe to pass through, and a positioning hole 101 is provided on the clamping pipe 10. An auxiliary line can be formed on the side wall of the mounting pipe through the positioning hole 101. The clamping device 20 includes a first clamping frame 21 and a second clamping frame 22, which are spaced apart along the radial direction of the clamping pipe 10. The distance between the first clamping frame 21 and the second clamping frame 22 in the radial direction of the clamping pipe 10 is adjustable. Both the first clamping frame 21 and the second clamping frame 22 pass through the clamping pipe 10 and are used to fix the mounting pipe. By bringing the first clamping frame 21 and the second clamping frame 22 close to each other, the mounting pipe is fixed inside the clamping pipe 10. Then, an auxiliary line is drawn on the mounting pipe through the positioning hole 101 provided on the clamping pipe 10 to ensure that the auxiliary line does not shift during the drawing process, reducing the difficulty of drawing the auxiliary line.

[0029] In some embodiments, the clamping pipe 10 is further provided with a first limiting hole 110 and a second limiting hole 120. The first limiting hole 110 and the second limiting hole 120 are respectively located on both sides of the clamping pipe 10. The first limiting hole 110 and the positioning hole 101 are spaced apart along the axial direction of the clamping pipe 10. The first clamping frame 21 passes through the clamping pipe 10 through the first limiting hole 110, and the second clamping frame 22 passes through the clamping pipe 10 through the second limiting hole 120.

[0030] In the above embodiment, two first limiting holes 110 are provided, and the two first limiting holes 110 and the positioning hole 101 are spaced apart along the axial direction of the clamping pipe 10; two second limiting holes 120 may also be provided, and the two second limiting holes 120 are spaced apart along the axial direction of the clamping pipe 10. With the above arrangement, the first clamping frame 21 passes through the first limiting hole 110 and passes through the clamping pipe 10, and the second clamping frame 22 passes through the second limiting hole 120 and passes through the clamping pipe 10, so that after the clamping device 20 fixes and installs the pipe, it can ensure that the axial direction of the installed pipe and the axial direction of the clamping pipe 10 are the same, so as to ensure that the auxiliary line will not be deviated during the drawing process.

[0031] In the above embodiments, the first clamping frame 21 includes a first clamping rod 211, and the second clamping frame 22 includes a second clamping rod 221. The first clamping rod 211 and the second clamping rod 221 extend in the same direction. The first clamping rod 211 passes through the first limiting hole 110, and the second clamping rod 221 passes through the second limiting hole 120. In conjunction with the above embodiments, two first clamping rods 211 can be provided, each passing through one of the two first limiting holes 110; two second clamping rods 221 can also be provided, each passing through one of the two second limiting holes 120; and the extension directions of both the first clamping rod 211 and the second clamping rod 221 are perpendicular to the axial direction of the clamping pipe 10.

[0032] In some embodiments, the second clamping rod 221 has a roller 220 at one end of the clamping pipe 10, and the axial direction of the roller 220 is perpendicular to the axial direction of the clamping pipe 10. The roller 220 is used to contact the installation pipe. After the installation pipe passes through the clamping pipe 10, the roller 220 can reduce the friction between the installation pipe and the second clamping frame 22, facilitating the movement of the clamping pipe 10 along the axial direction of the installation pipe. After the first clamping rod 211 and the second clamping rod 221 fix the installation pipe inside the clamping pipe 10, and an auxiliary line is drawn through the positioning hole 101, the first clamping frame 21 and the second clamping frame 22 can be moved away from each other and the clamping pipe 10 can be moved along the axial direction of the installation pipe so that the positioning ring 40 corresponds to another position. The installation pipe is then fixed by the first clamping rod 211 and the second clamping rod 221, facilitating the drawing of multiple auxiliary lines at different positions on the same installation pipe.

[0033] In some embodiments, the clamping pipe 10 includes a first pipe portion 11 and a second pipe portion 12 in the radial direction, and the first pipe portion 11 and the second pipe portion 12 are detachably connected; a positioning hole 101 and a first limiting hole 110 are provided on the first pipe portion 11, and a second limiting hole 120 is provided on the second pipe portion 12. For example, the clamping pipe 10 can be divided into a first pipe portion 11 and a second pipe portion 12 along a plane parallel to its axial direction. With the above configuration, the first pipe portion 11 and the second pipe portion 12 are detachably connected, facilitating the clamping pipe 10 to be fitted over the outside of the mounting pipe.

[0034] In the above embodiment, the first pipe portion 11 is provided with a first limiting structure 111, and the second pipe portion 12 is provided with a second limiting structure 121. The first limiting structure 111 and the second limiting structure 121 form an annular structure around the axial direction of the clamping pipe 10. Both ends of the first pipe portion 11 are provided with the first limiting structure 111, and both ends of the second pipe portion 12 are also provided with the second limiting structure 121. After the first pipe portion 11 and the second pipe portion 12 are engaged, both ends of the clamping pipe 10 can form an annular structure.

[0035] In the above embodiment, the auxiliary line forming device 100 further includes a limiting ring 13, which is sleeved outside the first limiting structure 111 and the second limiting structure 121. Through this arrangement, the limiting ring 13 can fix the relative positions of the first pipe portion 11 and the second pipe portion 12, achieving a detachable connection between the first pipe portion 11 and the second pipe portion 12.

[0036] During the use of the auxiliary line forming device 100, the first pipe section 11 and the second pipe section 12 are respectively fastened to the outside of the installed pipe, and then the limiting ring 13 is sleeved on the outside of the first limiting structure 111 and the second limiting structure 121 to fix the relative position of the first pipe section 11 and the second pipe section 12.

[0037] In some embodiments, the auxiliary line forming device 100 further includes a telescopic mechanism 30, one end of which is connected to a first clamping frame 21, and the other end of which is connected to a second clamping frame 22. The telescopic mechanism 30 is used to allow the first clamping frame 21 and the second clamping frame 22 to move closer or further apart from each other in the radial direction of the clamping pipe 10. With the above arrangement, by adjusting the first clamping frame 21 and the second clamping frame 22 to move closer together, the first clamping frame 21 and the second clamping frame 22 can fix the installation pipe inside the clamping pipe 10; by adjusting the first clamping frame 21 and the second clamping frame 22 to move further apart, the first clamping frame 21 and the second clamping frame 22 can release the installation pipe, facilitating the separation of the clamping pipe 10 and the installation pipe, or adjusting the relative position of the clamping pipe 10 and the installation pipe.

[0038] In the above embodiment, the telescopic mechanism 30 includes a first connecting rod 31, a second connecting rod 32, and a connecting tube 33; wherein, one end of the first connecting rod 31 is connected to the first clamping frame 21, and the other end of the first connecting rod 31 is located inside the connecting tube 33; one end of the second connecting rod 32 is connected to the second clamping frame 22, and the other end of the second connecting rod 32 is located inside the connecting tube 33; the first connecting rod 31 is provided with a first thread, and the second connecting rod 32 is provided with a second thread, the helical directions of the first thread and the second thread being opposite.

[0039] Accordingly, the connecting pipe 33 has threads corresponding to the first thread and the second thread, so that the first connecting rod 31 and the second connecting rod 32 can extend or retract synchronously relative to the connecting pipe 33 during rotation of the connecting pipe 33. In this embodiment, the connecting pipe 33 is provided with anti-slip strips, which are arranged around the connecting pipe 33 to increase the friction force when rotating the connecting pipe 33.

[0040] In some embodiments, the auxiliary line forming device 100 further includes a positioning ring 40, which may be located within the positioning hole 101, with the outer wall of the positioning ring 40 fitting against the inner wall of the positioning hole 101. Multiple positioning rings 40 may be provided, with the outer wall dimensions of the multiple positioning rings 40 being the same, but the inner wall dimensions being different.

[0041] With the above settings, the positioning ring 40 can be located inside the positioning hole 101. The outer wall of the positioning ring 40 fits against the inner wall of the positioning hole 101. Auxiliary lines can be drawn along the inner wall of the positioning ring 40. Since multiple positioning rings 40 can be provided, and the inner wall dimensions of the multiple positioning rings 40 are different, during the process of drawing auxiliary lines, a positioning ring 40 with a corresponding inner wall size can be selected and installed inside the positioning hole 101, thereby drawing auxiliary lines of different sizes, which improves the applicability of the auxiliary line forming device 100.

[0042] In some embodiments, the auxiliary line forming apparatus 100 further includes a calibration mechanism 50, which includes a calibration rod 51 and a calibration block 52. One end of the calibration rod 51 is movably connected to the first clamping frame 21. The calibration block 52 is disposed on the second clamping frame 22 and has a groove for accommodating the calibration rod 51. When the first clamping frame 21 and the second clamping frame 22 are arranged along the radial direction of the clamping pipe 10, the calibration rod 51 is partially located in the groove of the calibration block 52.

[0043] The above settings ensure that the arrangement direction of the first clamping frame 21 and the second clamping frame 22 is perpendicular to the axial direction of the clamping pipe 10, thereby ensuring that the arrangement direction of the first clamping frame 21 and the second clamping frame 22 is perpendicular to the axial direction of the installed pipe, thus ensuring that the auxiliary lines will not deviate during the drawing process and reducing the difficulty of drawing the auxiliary lines.

[0044] In some embodiments, the separately configured first pipe portion 11 and second pipe portion 12 are first fastened to the outside of the installation pipe, and then the limiting sleeves are fitted over the first limiting structure 111 and the second limiting structure 121 to fix the relative positions of the first pipe portion 11 and the second pipe portion 12. By rotating the connecting pipe 33, the first connecting rod 31 and the second connecting rod 32 are adjusted to bring the first clamping frame 21 and the second clamping frame 22 closer together, so that the first clamping rod 211 and the second clamping rod 221 pass through the first limiting hole 110 and the second limiting hole 120 respectively, thereby fixing the installation pipe inside the clamping pipe 10. Then, a positioning ring 40 with a corresponding inner wall size is selected and installed in the positioning hole 101, and auxiliary lines are drawn based on the inner wall of the positioning ring 40.

[0045] Based on this, the connecting pipe 33 can be rotated, and the first connecting rod 31 and the second connecting rod 32 can be adjusted to move the first clamping frame 21 and the second clamping frame 22 away from each other, so as to release the clamping device 20 from fixing the installation pipe, and move the clamping pipe 10 along the axial direction of the installation pipe so that the positioning ring 40 corresponds to another position. Then, the installation pipe is fixed by the first clamping rod 211 and the second clamping rod 221, which makes it easier to draw other auxiliary lines at different positions on the same installation pipe.

[0046] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0047] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

[0048] Although preferred embodiments have been described in this specification, 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 this specification.

[0049] Obviously, those skilled in the art can make various modifications and variations to this specification without departing from its spirit and scope. Therefore, if such modifications and variations fall within the scope of the claims and their equivalents, this specification is also intended to include such modifications and variations.

Claims

1. An auxiliary line forming device, characterized in that, include: A clamping pipe is provided for the installation pipe to pass through, and the clamping pipe is provided with positioning holes through which auxiliary lines can be formed on the side wall of the installation pipe; A clamping device includes a first clamping frame and a second clamping frame, which are spaced apart along the radial direction of the clamping pipe. The distance between the first clamping frame and the second clamping frame is adjustable in the radial direction of the clamping pipe. Both the first clamping frame and the second clamping frame pass through the clamping pipe and are used to fix the installation pipe.

2. The auxiliary line forming device according to claim 1, characterized in that, The clamping pipe is also provided with a first limiting hole and a second limiting hole. The first limiting hole and the second limiting hole are respectively located on both sides of the clamping pipe. The first limiting hole and the positioning hole are spaced apart along the axial direction of the clamping pipe. The first clamping frame passes through the clamping pipe through the first limiting hole, and the second clamping frame passes through the clamping pipe through the second limiting hole.

3. The auxiliary line forming device according to claim 2, characterized in that, In the radial direction of the clamping pipe, the clamping pipe includes a first pipe portion and a second pipe portion, which are detachably connected; The positioning hole and the first limiting hole are provided on the first pipe section, and the second limiting hole is provided on the second pipe section.

4. The auxiliary line forming device according to claim 3, characterized in that, The first clamping frame includes a first clamping rod, and the second clamping frame includes a second clamping rod. The first clamping rod and the second clamping rod extend in the same direction. The first clamping rod passes through the first limiting hole, and the second clamping rod passes through the second limiting hole.

5. The auxiliary line forming device according to claim 4, characterized in that, The second clamping rod has a roller at one end of the clamping pipe, and the axial direction of the roller is perpendicular to the axial direction of the clamping pipe.

6. The auxiliary line forming device according to claim 3, characterized in that, The first pipe section is provided with a first limiting structure, and the second pipe section is provided with a second limiting structure. The first limiting structure and the second limiting structure form an annular structure around the axial direction of the clamping pipe. The auxiliary line forming device further includes a limiting ring, which is sleeved outside the first limiting structure and the second limiting structure.

7. The auxiliary line forming apparatus according to any one of claims 1 to 6, characterized in that, It also includes a telescopic mechanism, one end of which is connected to the first clamping frame and the other end of which is connected to the second clamping frame; the telescopic mechanism is used to allow the first clamping frame and the second clamping frame to move closer to or further away from each other along the radial direction of the clamping pipe.

8. The auxiliary line forming device according to claim 7, characterized in that, The telescopic mechanism includes a first connecting rod, a second connecting rod, and a connecting pipe; One end of the first connecting rod is connected to the first clamping frame, and the other end of the first connecting rod is located inside the connecting tube; One end of the second connecting rod is connected to the second clamping frame, and the other end of the second connecting rod is located inside the connecting tube; The first connecting rod is provided with a first thread, and the second connecting rod is provided with a second thread, the first thread and the second thread having opposite helical directions.

9. The auxiliary line forming apparatus according to any one of claims 1 to 6, characterized in that, The auxiliary line forming device further includes a positioning ring, which can be located inside the positioning hole. The outer wall of the positioning ring is in contact with the inner wall of the positioning hole. Multiple positioning rings can be provided, and the outer wall dimensions of the multiple positioning rings are the same, but the inner wall dimensions are different.

10. The auxiliary line forming apparatus according to any one of claims 1 to 6, characterized in that, The auxiliary line forming device further includes a calibration mechanism, which includes a calibration rod and a calibration block. One end of the calibration rod is movably connected to the first clamping frame. The calibration block is disposed on the second clamping frame and has a groove for accommodating the calibration rod. When the first clamping frame and the second clamping frame are arranged along the radial direction of the clamping pipe, the calibration rod is partially located in the groove of the calibration block.

Images