Device and method for replacing pipe guide rails

Abstract

A pipe guide rail replacement device includes a plurality of circular rings, a plurality of long ribs, and a plurality of guide rail grooves. All the circular rings are arranged in sequence along the axial direction of the pipe guide rail replacement device, and the circular rings are parallel to each other in pairs. All the long ribs and all the guide rail grooves are evenly distributed along the same circumference. Each long rib intersects perpendicularly with the side surfaces of all the circular rings, and each long rib is parallel to each other in pairs. Each guide rail groove intersects perpendicularly with the side surfaces of all the circular rings, and each guide rail groove is parallel to each other in pairs. Each long rib is formed by connecting a plurality of short ribs in sequence, and the two ends of each short rib are respectively connected to the side surfaces of two adjacent circular rings. When used, since this design has multiple guide rail grooves, it can accommodate multiple guide rails for replacement in the pipe body at the same time, and the guide rail grooves are evenly distributed on the same circumference, so the coaxiality can be well guaranteed when installing the guide rails. Therefore, this design has high installation efficiency and high installation accuracy.

Description

Technical Field

[0001] The present invention relates to a guide rail replacement device, belongs to the field of mechanical processing, and in particular to a pipe guide rail replacement device and method. Background Art

[0002] At present, guide rails are often used to transport various devices or parts. However, during use, the guide rails may be damaged or corroded, and various situations may occur where the guide rails need to be replaced. In order to make the replacement of the guide rails more convenient, the installation of the guide rails needs to be pre-positioned.

[0003] A Chinese patent application with application number 201920166000.7 and application date January 30, 2019, discloses a parallel guide rail auxiliary installation device, comprising a mounting beam, a sliding block, a support block, and a measuring device. The sliding block is fixedly connected to the mounting beam, the support block is mounted on the mounting beam, and the measuring device is fixedly mounted on the support block. When auxiliary installation of two guide rails is performed along a first direction perpendicular to the extension direction of the guide rails, the sliding block is slidably connected to one guide rail, and the measuring device is capable of measuring the distance between the other guide rail and the measuring device in the first direction. Although this design achieves efficient parallel installation of two guide rails by measuring the distance between the two guide rails, it still has the following drawbacks:

[0004] This design can only install two position-limiting guide rails in parallel at a time, and errors are prone to occur when measuring distance, so the installation accuracy cannot be guaranteed. Therefore, this design has low installation efficiency and low installation accuracy.

[0005] The information disclosed in this background technology section is only intended to increase understanding of the overall background of the application and should not be considered as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects and problems of low installation efficiency and low installation accuracy in the prior art, and to provide a pipe guide rail replacement device and method with high guide rail installation efficiency and high installation accuracy.

[0007] To achieve the above objectives, the technical solution of the present invention is: a pipe guide rail replacement device, the pipe guide rail replacement device includes a plurality of rings, a plurality of long ribs and a plurality of guide rail grooves,

[0008] All the circular rings are arranged in sequence along the axial direction of the pipe guide rail replacement device, and the circular rings are parallel to each other. All the long ribs are evenly distributed along the same circumference, and all the guide rail grooves are evenly distributed along the same circumference.

[0009] Each long rib intersects with the side surfaces of all the circular rings perpendicularly, and each long rib is parallel to each other. Each guide groove intersects with the side surfaces of all the circular rings perpendicularly, and each guide groove is parallel to each other.

[0010] Each long rib plate is formed by connecting a plurality of short rib plates in sequence, and the two ends of each short rib plate are respectively connected to the side surfaces of two adjacent circular rings.

[0011] On the outer surface of each circular ring, a portion other than the junction with the long rib plate is provided with a plurality of inner ring grooves, and the inner ring grooves on two adjacent circular rings are connected one by one to form a plurality of guide rail grooves.

[0012] The inner groove of the ring is also provided with a threaded hole which penetrates the inner groove of the ring from the inner surface of the circular ring. A locking bolt is provided in the threaded hole, and the threaded hole is threadedly connected with the locking bolt.

[0013] Each short rib plate is provided with an inner groove, and the inner grooves in each long rib plate are connected in sequence to form a guide rail groove, and the long rib plates correspond to the guide rail grooves one by one.

[0014] A left threaded hole is provided on the left side of the groove in the plate, and the left threaded hole passes through the groove in the plate from the left side of the short rib plate. A left locking bolt is provided in the left threaded hole, and the left threaded hole is threadedly connected to the left locking bolt;

[0015] A right threaded hole is provided on the right side of the groove in the plate, and the right threaded hole passes through the groove in the plate from the right side of the short rib plate. A right locking bolt is provided in the right threaded hole, and the right threaded hole is threadedly connected to the right locking bolt;

[0016] The left threaded hole and the right threaded hole are symmetrically arranged along the center line of the groove in the plate.

[0017] The guide rail to be installed is inserted into the guide rail groove, and the thickness of the guide rail in the guide rail groove is greater than the depth of the guide rail groove, and the top surface of the guide rail is convex relative to the top of the guide rail groove.

[0018] The top surface of the guide rail is 4-6 mm higher than the top of the guide rail groove.

[0019] The guide rail groove also has a bottom wall, and a left side wall and a right side wall connected to the bottom wall, and the bottom wall is an arc surface structure.

[0020] The arc surface structure of the bottom wall bulges outward in a direction away from the center of the circular ring, corresponding to the inner surface of the guide rail to be inserted into the guide rail groove.

[0021] A method for using a pipe guide rail replacement device, the method comprising the following steps:

[0022] Step 1: Cut off the weld points of the original guide rails in the tube body one by one, remove the original guide rails after the removal is completed, repeat the above steps until all the guide rails are removed, and then mark the installation position of the guide rails in the tube body to end the first step;

[0023] Step 2: Insert multiple guide rails to be installed into the guide rail grooves of the pipe body guide rail replacement device one by one, then push the pipe body guide rail replacement device into the pipe body, align the guide rails in the guide rail grooves with the positioning marks, and then fix all the guide rails between the guide rail grooves and the inner surface of the pipe body. After all the guide rails are fixed, the second step is completed;

[0024] Step 3: Perform welding process on all guide rails in sequence, so that the guide rails are welded to the inner surface of the pipe body one by one. After all the guide rails are welded, release the fixation of all the guide rails and extract the pipe body guide rail replacement device from the pipe body. After the pipe body guide rail replacement device is extracted, the third step is completed.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In a pipe guide rail replacement device and method of the present invention, the pipe guide rail replacement device comprises a plurality of circular rings, a plurality of long ribs and a plurality of guide rail grooves. All the circular rings are arranged in sequence along the axial direction of the pipe guide rail replacement device, and the circular rings are parallel to each other in pairs. All the long ribs are evenly distributed along the same circumference. All the guide rail grooves are evenly distributed along the same circumference. Each long rib intersects with the side surfaces of all the circular rings perpendicularly. Each guide rail groove is parallel to each other in pairs. Each guide rail groove is perpendicular to the side surfaces of all the circular rings. Each guide rail groove is parallel to each other in pairs. Each long rib is composed of multiple The short ribs are connected in sequence, and the two ends of each short rib are respectively connected to the side surfaces of two adjacent circular rings. When in use, the original guide rails in the tube body are first taken out in sequence, and then multiple guide rails are inserted into the guide rail grooves in sequence. After all the guide rails are inserted, the tube body guide rail replacement device is placed in the tube body, aligned with the positioning reference of the guide rails, and then all the guide rails are welded to the inner surface of the tube body in sequence using a welding process. After all the guide rails are welded, the guide rail replacement device is slid out of the tube body, and the replacement of multiple guide rails can be completed at the same time. Because the installation position of the guide rails is determined in advance, the installation position is accurate. Therefore, the guide rail installation efficiency of the present invention is high and the installation accuracy is high.

[0027] 2. In a device and method for replacing a pipe guide rail of the present invention, in the device for replacing a pipe guide rail, the guide rail groove has a bottom wall, and a left side wall and a right side wall connected to the bottom wall. The bottom wall is an original arc surface structure, and the arc surface structure bulges outward in a direction away from the center of the circular ring, and the arc surface structure fits with the inner surface of the guide rail. During application, after the guide rail replacement device is placed in the pipe body, since the guide rail grooves of the guide rail replacement device are distributed on the outer surface of the circular ring, the guide rails in the guide rail grooves are also distributed on the same circle, and the bottom wall of the guide rail groove fits with the inner surface of the guide rail, which can better fix the position of the guide rail. Therefore, the present invention can well ensure the coaxiality of the guide rail.

[0028] 3. In a device and method for replacing a pipe guide rail according to the present invention, the guide rail grooves have threaded holes and locking bolts that cooperate with the threaded holes. During use, after all guide rails are sequentially inserted into the guide rail grooves, the locking bolts on the guide rail grooves are tightened. The guide rails are clamped between the inner surface of the pipe and the guide rail grooves, thus completing the fixation of the guide rails. Therefore, the present invention facilitates fixation.

[0029] 4. In the device and method for replacing a pipe guide rail of the present invention, the depth of the guide rail groove is less than the thickness of the guide rail. When the guide rail is inserted into the guide rail groove, the top surface of the guide rail protrudes from the guide rail groove, which facilitates welding the guide rail to the inner surface of the pipe body. If the top surface of the guide rail does not protrude from the guide rail groove, the welding process requires inserting an electric welder into the guide rail groove to perform welding, which is relatively inconvenient. Therefore, the present invention is easy to operate.

[0030] 5. The present invention relates to a device and method for replacing a pipe guide rail, and also to a method for using the device. The method comprises the following steps: first, all weld points of the original guide rails in the pipe are sequentially removed, then all guide rails are removed and their installation positions are marked, and then the previously processed finished guide rails are sequentially inserted into the guide rail grooves of the pipe guide rail replacement device. After the guide rails are inserted, the pipe guide rail replacement device is placed in the pipe, the guide rail positioning reference is aligned, and then all guide rails are fixed so that they are clamped between the inner surface of the pipe and the guide rail grooves. The welding process is then started so that the guide rails are welded to the inner surface of the pipe. After welding is completed, all guide rails are released and the pipe guide rail replacement device is pulled out of the pipe. Therefore, the present invention can replace multiple guide rails at a time and can ensure the coaxiality of the guide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention.

[0032] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the guide rail groove.

[0033] Figure 3 yes Figure 1 Schematic diagram of the insertion guide.

[0034] Figure 4 yes Figure 1 Schematic diagram of usage.

[0035] Figure 5 It is a structural diagram of Example 3 of the present invention.

[0036] Figure 6 It is a schematic diagram of the enlarged structure of the guide rail groove of Example 3.

[0037] Figure 7 This is a schematic diagram of inserting the guide rail in Example 3.

[0038] Figure 8 This is a schematic diagram of the use of Example 3.

[0039] In the figure: circular ring 1, long rib plate 2, guide rail groove 3, short rib plate 4, groove in ring 5, groove in plate 6, left threaded hole 61, left locking bolt 62, right threaded hole 63, right locking bolt 64, left side wall 7, right side wall 8, bottom wall 9, threaded hole 10, locking bolt 11, tube body 12, guide rail 13. DETAILED DESCRIPTION

[0040] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] See Figure 1 — Figure 8 A pipe guide rail replacement device, comprising a plurality of rings 1, a plurality of long ribs 2 and a plurality of guide rail grooves 3,

[0042] All the rings 1 are arranged in sequence along the axial direction of the pipe guide rail replacement device, and the rings 1 are parallel to each other. All the long ribs 2 are evenly distributed along the same circumference, and all the guide rail grooves 3 are evenly distributed along the same circumference.

[0043] Each long rib 2 intersects with the side surfaces of all the circular rings 1 perpendicularly, and each pair of long ribs 2 is parallel to each other. Each guide groove 3 intersects with the side surfaces of all the circular rings 1 perpendicularly, and each pair of guide grooves 3 is parallel to each other.

[0044] Each long rib plate 2 is formed by connecting a plurality of short rib plates 4 in sequence, and both ends of each short rib plate 4 are connected to the side surfaces of two adjacent circular rings 1 respectively.

[0045] A plurality of inner ring grooves 5 are formed on the outer surface of each circular ring 1 except for the intersection with the long rib plate 2 . The inner ring grooves 5 on two adjacent circular rings 1 are connected one by one to form a plurality of guide rail grooves 3 .

[0046] The inner ring groove 5 is also provided with a threaded hole 10 which penetrates the inner ring groove 5 from the inner surface of the ring 1 . A locking bolt 11 is provided in the threaded hole 10 , and the threaded hole 10 is threadedly connected to the locking bolt 11 .

[0047] Each short rib plate 4 is provided with an inner plate groove 6 , and the inner plate grooves 6 in each long rib plate 2 are connected in sequence to form a guide rail groove 3 , and the long rib plates 2 correspond to the guide rail grooves 3 one by one.

[0048] A left threaded hole 61 is provided on the left side of the plate inner groove 6. The left threaded hole 61 passes through the plate inner groove 6 from the left side of the short rib plate 4. A left locking bolt 62 is provided in the left threaded hole 61. The left threaded hole 61 is threadedly connected to the left locking bolt 62.

[0049] A right threaded hole 63 is provided on the right side of the inner groove 6 of the plate. The right threaded hole 63 passes through the inner groove 6 of the plate from the right side of the short rib plate 4. A right locking bolt 64 is provided in the right threaded hole 63. The right threaded hole 63 is threadedly connected to the right locking bolt 64; the left threaded hole 61 and the right threaded hole 63 are symmetrically arranged along the center line of the inner groove 6 of the plate.

[0050] A guide rail 13 to be installed is inserted into the guide rail groove 3 , and the thickness of the guide rail 13 in the guide rail groove 3 is greater than the depth of the guide rail groove 3 , and the top surface of the guide rail 13 is convex relative to the top of the guide rail groove 3 .

[0051] The top surface of the guide rail 13 is 4-6 mm higher than the top of the guide rail groove.

[0052] The guide rail groove 3 further has a bottom wall 9 , and a left side wall 7 and a right side wall 8 connected to the bottom wall 9 . The bottom wall 9 is an arc surface structure.

[0053] The arc surface structure of the bottom wall 9 bulges outward in a direction away from the center of the circle, corresponding to the inner surface of the guide rail 13 to be inserted into the guide rail groove 3 .

[0054] A method for using a pipe guide rail replacement device, characterized in that the method comprises the following steps:

[0055] Step 1: Cut off the original weld points of the guide rail 13 in the tube body 12 one by one, remove the original guide rail 13 after the removal is completed, repeat the above steps until all the guide rails 13 are removed, and then mark the installation position of the guide rail 13 in the tube body 12, and end the first step;

[0056] Step 2: Insert multiple guide rails 13 to be installed into the guide rail grooves 3 of the pipe body guide rail replacement device one by one, then push the pipe body guide rail replacement device into the pipe body 12, align the guide rails 13 in the guide rail grooves 3 with the positioning marks, and then fix all the guide rails 13 between the guide rail grooves 3 and the inner surface of the pipe body 12 accordingly. After all the guide rails 13 are fixed, the second step is completed;

[0057] Step 3: Perform welding process on all guide rails 13 in sequence, so that the guide rails 13 are welded to the inner surface of the tube body 12 one by one. After all the guide rails 13 are welded, release the fixation of all the guide rails 13 and extract the tube body guide rail replacement device from the tube body 12. After the tube body guide rail replacement device is extracted, the third step is ended.

[0058] The principle of the present invention is described as follows:

[0059] The present invention relates to a device and method for replacing a pipe guide rail, and more specifically, to a device and method for replacing a guide rail 13 welded to the inner surface of a cylindrical or pipe part fixed to a hull.

[0060] Because the guide rails 13 within the tube body 12 are immersed in seawater for extended periods, corrosion occurs, necessitating regular replacement. Currently, only one guide rail 13 can be replaced at a time. This involves determining the center of the circle based on the remaining three existing guide rails 13, welding the guide rail 13 to the inner surface of the tube body 12, then machining the lower surface of the guide rail 13 using a benching process. The remaining three guide rails 13 are then replaced using this method. This method results in significant cumulative errors, resulting in low coaxiality for the guide rails 13. Furthermore, this method requires a high workload and long replacement times, significantly impacting the replacement cycle.

[0061] In a tube body guide rail replacement device and method of the present invention, first, all the corroded guide rails 13 in the tube body 12 are removed and taken out, and the installation positions of the guide rails 13 are marked. Next, all the guide rails 13 to be installed are placed in the guide rail grooves 3 in sequence, and then the tube body guide rail replacement device is pushed into the tube body 12 as a whole. After finding the marks, all the guide rails 13 are fixed between the guide rail grooves 3 and the inner surface of the tube body 12. Next, the guide rails 13 are welded in sequence so that the guide rails 13 are welded to the inner surface of the tube body 12. After all the guide rails 13 are welded, the fixation of all the guide rails 13 is released, and the tube body guide rail replacement device is pulled out from the tube body 12, so that all the guide rails 13 in a tube body 12 can be replaced. The present invention can replace multiple guide rails 13 at a time, and since the tube guide rail replacement device can limit all guide rails 13 to be evenly distributed on the circular ring 1 with the same center, it can accurately ensure that the inner surfaces of the guide rails 13 are also located on the same circumference, that is, the coaxiality between the guide rails 13 can be well guaranteed. In addition, the design structure of this device is simple and the replacement method is novel.

[0062] Example 1:

[0063] See Figure 1, a tube guide rail replacement device, the tube guide rail replacement device includes multiple circular rings 1, multiple long ribs 2 and multiple guide rail grooves 3, all the circular rings 1 are arranged in sequence along the axial direction of the tube guide rail replacement device, and the circular rings 1 are parallel to each other in pairs, all the long ribs 2 are evenly distributed along the same circumference, and all the guide rail grooves 3 are evenly distributed along the same circumference; each long rib 2 is perpendicular to the side surfaces of all the circular rings 1, each long rib 2 is parallel to each other in pairs, each guide rail groove 3 is perpendicular to the side surfaces of all the circular rings 1, and each guide rail groove 3 is parallel to each other in pairs; each long rib 2 is composed of multiple short ribs 4 connected in sequence, and the two ends of each short rib 4 are respectively connected to the side surfaces of two adjacent circular rings 1.

[0064] A method for using a pipe guide rail replacement device, characterized in that the method includes the following steps: a first step: sequentially cutting off the weld points of the original guide rail 13 in the pipe body 12, removing the original guide rail 13 after the cutting is completed, repeating the above steps until all the guide rails 13 are removed, and then marking the installation position of the guide rail 13 in the pipe body 12, ending the first step; a second step: inserting multiple guide rails 13 to be installed into the guide rail slots 3 of the pipe guide rail replacement device one by one, and then pushing the pipe guide rail replacement device into the pipe body 12, align the guide rails 13 in the guide rail groove 3 with the positioning mark, and then fix all the guide rails 13 correspondingly between the guide rail groove 3 and the inner surface of the tube body 12. After all the guide rails 13 are fixed, the second step is completed; the third step: perform the welding process on all the guide rails 13 in turn, so that the guide rails 13 are welded to the inner surface of the tube body 12 one by one. After all the guide rails 13 are welded, release the fixation of all the guide rails 13, and extract the tube body guide rail replacement device from the tube body 12. After the tube body guide rail replacement device is extracted, the third step is completed.

[0065] Example 2:

[0066] See Figures 1-4 The basic contents are the same as those of Example 1, except that: a plurality of inner ring grooves 5 are formed on the outer surface of each circular ring 1, except for the intersection with the long rib plate 2. The inner ring grooves 5 on two adjacent circular rings 1 are connected one by one to form a plurality of guide rail grooves 3. Each inner ring groove 5 is also provided with a threaded hole 10 extending from the inner surface of the circular ring 1 through the inner ring groove 5. A locking bolt 11 is disposed in the threaded hole 10 and is threadedly engaged with the locking bolt 11.

[0067] During use, when the tubular guide rail device is placed in the tubular body 12, after the guide rail 13 is aligned with the positioning mark, the locking bolt 11 on the groove 5 in the tightening ring can be tightened to complete the fixation of the guide rail. This structure is simple to fix.

[0068] Example 3:

[0069] See Figure 5-Figure 8 The basic contents are the same as those of Example 1, except that: each short rib plate 4 is provided with an internal groove 6, and the internal grooves 6 of each long rib plate 2 are sequentially connected to form a guide rail groove 3, with the long rib plates 2 corresponding to the guide rail grooves 3. A left threaded hole 61 is provided on the left side of the internal groove 6. The left threaded hole 61 passes through the internal groove 6 from the left side of the short rib plate 4. A left locking bolt 62 is provided in the left threaded hole 61, and the left locking bolt 62 is threadedly connected to the left threaded hole 61; a right threaded hole 63 is provided on the right side of the internal groove 6. The right threaded hole 63 passes through the internal groove 6 from the right side of the short rib plate 4. A right locking bolt 64 is provided in the right threaded hole 63, and the right locking bolt 64 is threadedly connected to the right threaded hole 63; the left threaded hole 61 and the right threaded hole 63 are symmetrically arranged along the center line of the internal groove 6.

[0070] During use, when the tube guide rail device is placed in the tube body 12, after the guide rail 13 is aligned with the positioning mark, the left locking bolt 62 and the right locking bolt 64 on the groove 6 in the plate are tightened to complete the fixation of the guide rail. This structure is easy to fix.

[0071] Example 4:

[0072] See Figure 1 — Figure 8 The basic content is the same as that of Example 1, except that: a guide rail 13 to be installed is inserted into the guide rail groove 3, and the thickness of the guide rail 13 located in the guide rail groove 3 is greater than the depth of the guide rail groove 3, and the top surface of the guide rail 13 is in a convex state relative to the top of the guide rail groove 3.

[0073] During use, when the guide rail 13 is inserted into the guide rail groove 3, the top surface of the guide rail 13 protrudes from the outer surface of the pipe body guide rail replacement device. This structure facilitates welding of the guide rail.

[0074] Example 5:

[0075] See Figure 1 — Figure 8 The basic contents are the same as those of Example 1, except that the guide rail groove 3 further comprises a bottom wall 9, and a left side wall 7 and a right side wall 8 connected to the bottom wall 9. The bottom wall 9 is an arcuate surface structure. The arcuate surface structure of the bottom wall 9 convex outward in a direction away from the center of the ring, corresponding to the inner surface of the guide rail 13 to be inserted into the guide rail groove 3.

[0076] During use, after the guide rail 13 is inserted into the guide rail groove 3 , the inner surface of the guide rail 13 fits against the bottom wall 9 . This structure further ensures the coaxiality of the guide rail during installation.

[0077] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A method for using a pipe guide rail replacement device, characterized in that: The pipe guide rail replacement device comprises a plurality of circular rings (1), a plurality of long ribs (2) and a plurality of guide rail grooves (3); All the circular rings (1) are arranged in sequence along the axial direction of the pipe guide rail replacement device, and the circular rings (1) are parallel to each other, all the long ribs (2) are evenly distributed along the same circumference, and all the guide rail grooves (3) are evenly distributed along the same circumference; Each long rib plate (2) intersects with the side surfaces of all the circular rings (1) perpendicularly, and each long rib plate (2) is parallel to each other; each guide rail groove (3) intersects with the side surfaces of all the circular rings (1) perpendicularly, and each guide rail groove (3) is parallel to each other; Each long rib plate (2) is formed by sequentially connecting a plurality of short rib plates (4), and the two ends of each short rib plate (4) are respectively connected to the side surfaces of two adjacent circular rings (1); A guide rail (13) to be installed is inserted into the guide rail groove (3), and the thickness of the guide rail (13) in the guide rail groove (3) is greater than the depth of the guide rail groove (3), and the top surface of the guide rail (13) is in a convex state relative to the top of the guide rail groove (3); The method of use comprises the following steps: The first step is to sequentially cut off the welding points of the original guide rail (13) in the tube body (12), remove the original guide rail (13) after the cutting is completed, repeat the above steps until all the guide rails (13) are removed, and then mark the installation position of the guide rail (13) in the tube body (12), and end the first step; Step 2: insert multiple guide rails (13) to be installed into the guide rail grooves (3) of the pipe body guide rail replacement device one by one, then push the pipe body guide rail replacement device into the pipe body (12), align the guide rails (13) in the guide rail grooves (3) with the positioning marks, and then fix all the guide rails (13) between the guide rail grooves (3) and the inner surface of the pipe body (12) accordingly. After all the guide rails (13) are fixed, the second step is completed; The third step is to perform welding process on all the guide rails (13) in sequence, so that the guide rails (13) are welded to the inner surface of the tube body (12) one by one. After all the guide rails (13) are welded, the fixation of all the guide rails (13) is released, and the tube body guide rail replacement device is extracted from the tube body (12). After the tube body guide rail replacement device is extracted, the third step is ended.

2. The method for using the tube guide rail replacement device according to claim 1, characterized in that: A plurality of inner ring grooves (5) are provided on the outer surface of each circular ring (1) except the intersection with the long rib plate (2). The inner ring grooves (5) on two adjacent circular rings (1) are connected one by one to form a plurality of guide rail grooves (3).

3. The method for using the tube guide rail replacement device according to claim 2, characterized in that: The inner ring groove (5) is also provided with a threaded hole (10) which penetrates the inner ring groove (5) from the inner surface of the circular ring (1). A locking bolt (11) is provided in the threaded hole (10), and the threaded hole (10) is threadedly connected to the locking bolt (11).

4. The method for using the tube guide rail replacement device according to claim 1, characterized in that: Each short rib plate (4) is provided with an inner plate groove (6), and the inner plate grooves (6) in each long rib plate (2) are connected in sequence to form a guide rail groove (3), and the long rib plates (2) correspond to the guide rail grooves (3) one by one.

5. The method for using the tube guide rail replacement device according to claim 4, characterized in that: A left threaded hole (61) is provided on the left side of the plate inner groove (6), and the left threaded hole (61) passes through the plate inner groove (6) from the left side of the short rib plate (4). A left locking bolt (62) is provided in the left threaded hole (61), and the left threaded hole (61) is threadedly connected to the left locking bolt (62); A right threaded hole (63) is provided on the right side of the plate inner groove (6), the right threaded hole (63) passes through the plate inner groove (6) from the right side of the short rib plate (4), a right locking bolt (64) is provided in the right threaded hole (63), and the right threaded hole (63) is threadedly connected to the right locking bolt (64); The left threaded hole (61) and the right threaded hole (63) are symmetrically arranged along the center line of the groove (6) in the plate.

6. The method for using the tube guide rail replacement device according to claim 1, characterized in that: The top surface of the guide rail (13) is 4-6 mm higher than the top of the guide rail groove.

7. The method for using the tube guide rail replacement device according to claim 1, characterized in that: The guide rail groove (3) further comprises a bottom wall (9), and a left side wall (7) and a right side wall (8) connected to the bottom wall (9); the bottom wall (9) is an arc surface structure.

8. The method for using the tube guide rail replacement device according to claim 7, characterized in that: The arc surface structure of the bottom wall (9) bulges outward in a direction away from the center of the circular ring, corresponding to the inner surface of the guide rail (13) to be inserted into the guide rail groove (3).

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