A drag reduction support for pipeline wellhead construction

Abstract

The application discloses a drag-reducing support for pipeline wellhead construction and belongs to the technical field of pipeline wellhead cable layout, which comprises a first supporting rod, a connecting mechanism arranged between two first supporting rods, a guide wheel for guiding the construction cable, a fixing seat provided with a mounting mechanism for mounting and fixing the guide wheel, and a transmission mechanism for driving the mounting mechanism and the guide wheel to move. The mounting mechanism is driven by the transmission mechanism to move, and the mounting mechanism moves along with the guide wheel to adjust the position of the guide wheel on the wellhead according to different wellheads, so that the cable can be conveniently wound and unwound, and the flexibility is high. In addition, the fixing of the guide wheel on the mounting mechanism can be released to remove the guide wheel, and the guide wheel can be replaced according to the specific site condition and the use condition of the guide wheel, so that the application is convenient to use in various conditions and has high flexibility.

Description

Technical Field

[0001] This invention belongs to the field of pipeline wellhead cable laying technology, and more specifically, relates to a drag-reducing support for pipeline wellhead construction. Background Technology

[0002] During the construction processes such as cleaning, CCTV inspection (internal condition and health inspection of drainage pipes), and UV curing of pipelines, cables or ropes need to be laid into the pipeline through the pipeline manhole for power connection to the cleaning head, inspection robot, UV lamp, etc., and to facilitate the placement and retrieval of the cleaning head, inspection robot, UV lamp, etc. in the pipeline.

[0003] Currently, during construction, cables are simply placed directly into the pipe along the manhole opening and retrieved directly. During movement, the cable comes into contact with the manhole wall, creating a friction angle that increases resistance, leading to low construction efficiency and wear on the cable. Another method involves mounting a roller on a support frame, which is then placed outside the manhole, allowing the cable to be lowered and lowered along the roller. However, this roller is usually fixed to the frame, making it impossible to adjust its position for different manholes, resulting in poor flexibility and adaptability. It cannot be used for some manholes; furthermore, it's impossible to replace or use rollers of different specifications, requiring the fabrication of additional supports, which is cumbersome, time-consuming, labor-intensive, and costly.

[0004] Therefore, it is necessary to provide a drag-reducing support for pipeline wellhead construction to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a drag-reducing support for pipeline wellhead construction to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A drag-reducing support for pipeline wellhead construction includes:

[0008] The first support rod is provided in two parts, and a connecting mechanism is provided between the two first support rods to adjust the distance between the two first support rods;

[0009] The guide wheel is detachably mounted between the two first support rods and is used to guide the construction cable.

[0010] A fixed base is provided on the first support rod, and the fixed base is provided with an installation mechanism for installing and fixing the guide wheel;

[0011] A transmission mechanism, located within the fixed base, is used to drive the mounting mechanism and the guide wheel to move.

[0012] As a further embodiment of the present invention: a transmission groove is provided on the fixed base, and a connecting block is slidably connected to the inner wall of the transmission groove; a lead screw that is threadedly connected to the connecting block is rotatably connected in the transmission groove of one of the fixed bases, and a sliding rod that movably passes through the connecting block is provided in the transmission groove of the other fixed base.

[0013] As a further aspect of the present invention: the transmission mechanism includes:

[0014] A transmission rod is rotatably mounted on the fixed base via a bearing, and a worm gear is provided on the transmission rod;

[0015] A worm gear is mounted on the lead screw and meshes with the worm.

[0016] As a further aspect of the present invention: mounting posts are provided on both sides of the guide wheel, and mounting holes are provided on the mounting posts; the mounting mechanism includes:

[0017] A sleeve is rotatably mounted on the connecting block, and a movable cavity is provided inside the sleeve;

[0018] A fixing block is slidably disposed within the displacement cavity, and a first elastic element is provided between the inner end of the fixing block and the inner wall of the displacement cavity.

[0019] As a further aspect of the present invention: a sliding groove communicating with the sliding cavity is provided on the sleeve column, and a connecting rod is slidably arranged on the inner wall of the sliding groove, the end of the connecting rod being connected to the fixing block.

[0020] As a further aspect of the present invention, it also includes:

[0021] The second support rod is movably inserted inside the first support rod, and its overall length can be changed by moving along the second support rod.

[0022] The third support rod is connected to the second support rod via the connecting mechanism.

[0023] As a further aspect of the present invention: the connecting mechanism includes:

[0024] The connecting rod is mounted on either the first or the second support rod;

[0025] The inner connecting rod is movably inserted into the outer connecting rod.

[0026] Both the outer connecting rod and the first support rod are provided with limiting components for restricting and fixing the inner connecting rod and the second support rod, respectively.

[0027] As a further embodiment of the present invention: an upper vertical tube is provided at the bottom of the connecting outer rod, a lower vertical tube is slidably inserted inside the upper vertical tube, an arc-shaped plate is provided on the lower vertical tube for fitting the inner wall of the pipe well opening, and a limiting component is also provided on the upper vertical tube for fixing the lower vertical tube.

[0028] As a further aspect of the present invention: the second support rod, the connecting inner rod, and the lower vertical tube are all provided with multiple fixing holes, and the limiting component includes:

[0029] A support plate is disposed on the first support rod, the connecting outer rod, or the upper vertical tube;

[0030] A fixed insertion rod is movably inserted through the support plate, with one end adapted to the fixed hole and the other end provided with a pull block;

[0031] The second elastic element is disposed between the pull block and the support plate.

[0032] As a further embodiment of the present invention: a telescopic outer rod is provided on the connecting outer rod, and a telescopic inner rod is slidably inserted inside the telescopic outer rod. A third elastic element is provided between one end of the telescopic inner rod and the inner wall of the telescopic outer rod, and a limit wheel is rotatably provided at the other end.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] 1. This solution can drive the installation mechanism to move through the transmission mechanism. The installation mechanism will then move along the fixed base with the guide wheel, thereby changing the position of the guide wheel. This allows the position of the guide wheel on the wellhead to be adjusted according to different wellheads, making it easier to reel in and out the cable. It is highly flexible, applicable to a wide range of wellheads, and has a wide range of applications and strong practicality.

[0035] 2. When the guide wheel is damaged or needs to be replaced with a different specification, the guide wheel can be removed by releasing the fixing of the guide wheel through the installation mechanism. Then, the distance between the two first support rods can be adjusted by the connecting mechanism to fit the guide wheel to be replaced. The replaced guide wheel can then be installed with the installation mechanism. This allows for replacement according to the specific site conditions and the usage of the guide wheel, which is convenient for use in various situations. It eliminates the need for additional brackets, saving time and effort, reducing manufacturing costs, and meeting the needs of various situations with high flexibility.

[0036] 3. Before inserting the cable, pressing the limit wheel will cause the inner telescopic rod to slide inward towards the outer telescopic rod, compressing the third elastic element. After placing the cable on the guide wheel, releasing the limit wheel will cause the limit wheel to return to its initial position through the rebound force of the third elastic element. At this time, the limit wheel will limit the cable, which can greatly prevent the cable from coming off the guide wheel during use, ensuring the stability of cable retraction and deployment, and making it highly practical.

[0037] 4. This solution improves the stability of the device by using an arc-shaped plate to adhere to the well wall. When retracting or extending the cable, the well wall restricts movement, deviation, or overturning of the first and second supports, further ensuring stability during cable retraction or extension. The height of the arc-shaped plate can also be adjusted by varying the distance between the well wall and the outside of the well opening, making it suitable for different pipe well openings. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0039] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0040] Figure 3 This is a schematic diagram of the guide wheel structure of the present invention;

[0041] Figure 4 This is a schematic diagram of the fixing base structure of the present invention;

[0042] Figure 5 This is a top view of the internal cross-section of the fixing base of the present invention;

[0043] Figure 6 This is a schematic diagram of the cross-sectional structure of the sleeve column of the present invention;

[0044] Figure 7 This is a schematic cross-sectional view of the telescopic outer rod of the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0046] Figure 9 for Figure 8 Enlarged structural diagram at point B.

[0047] Explanation of the labels in the diagram:

[0048] 1. First support rod; 2. Connecting mechanism; 201. Connecting outer rod; 202. Connecting inner rod; 203. Limiting component; 2031. Support plate; 2032. Fixed insert rod; 2033. Pull block; 2034. Second elastic element; 3. Guide wheel; 4. Fixed seat; 5. Mounting mechanism; 501. Sleeve column; 502. Shifting cavity; 503. Fixed block; 504. First elastic element; 6. Transmission mechanism; 601 1. Transmission rod; 602. Worm gear; 603. Worm wheel; 7. Transmission groove; 8. Connecting block; 9. Lead screw; 11. Mounting column; 12. Mounting hole; 13. Moving groove; 14. Connecting rod; 15. Second support rod; 16. Third support rod; 17. Upper vertical tube; 18. Lower vertical tube; 19. Arc-shaped plate; 20. Fixing hole; 21. Telescopic outer rod; 22. Telescopic inner rod; 23. Third elastic element; 24. Limiting wheel. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example 1:

[0051] Please see Figure 1 and Figure 3-4 A drag-reducing support for pipeline wellhead construction includes: two first support rods 1, with a connecting mechanism 2 between the two first support rods 1 for adjusting the distance between the two first support rods 1; a guide wheel 3, detachably mounted between the two first support rods 1 for guiding the construction cable; a fixed seat 4, mounted on the first support rods 1, with an installation mechanism 5 mounted on the fixed seat 4 for mounting and fixing the guide wheel 3; and a transmission mechanism 6, mounted inside the fixed seat 4 for driving the installation mechanism 5 and the guide wheel 3 to move.

[0052] In use, first place the device at the wellhead of the pipeline construction site, with the first support rod 1 resting outside the wellhead 1. At this time, the guide wheel 3 is above the wellhead. Then, the cable can be inserted into the pipeline through the guide wheel 3. When retracting, it also moves along the guide wheel 3, thereby guiding and turning the cable through the guide wheel 3. This avoids the current situation where the cable will contact the side wall of the wellhead during the cable retraction and insertion process, greatly reducing the resistance of the cable retraction and insertion. This allows for smoother and faster insertion and retraction of the cable-connected cleaning head, inspection robot, ultraviolet lamp, etc., improving construction efficiency. It also avoids wear and tear on the cable from the well wall, extending the cable's service life.

[0053] In use, the installation mechanism 5 can be moved by the transmission mechanism 6, and the installation mechanism 5 will move along the fixed seat 4 with the guide wheel 3. This allows the guide wheel 3 to move back and forth between the two first support rods 1, thereby changing the position of the guide wheel 3. This allows the position of the guide wheel 3 on the wellhead to be adjusted according to different wellheads, making it more convenient to reel in and out the cable. It is highly flexible, applicable to a wide range of wellheads, and has a wide range of applications and strong practicality.

[0054] When the guide wheel 3 is damaged or needs to be replaced with a different specification, the guide wheel 3 can be released by the mounting mechanism 5. At this time, the guide wheel 3 can be removed. Then, the distance between the two first support rods 1 can be adjusted by the connecting mechanism 2 to fit the guide wheel 3 that is about to be replaced. After that, the replaced guide wheel 3 is installed with the mounting mechanism 5. After installation, it can be used. Thus, it can be replaced according to the specific site conditions and the usage of the guide wheel 3, which is convenient for use in various situations. There is no need to make a separate bracket. The operation is simple, time-saving and labor-saving, reduces manufacturing costs, and can meet the needs of various different situations. It is highly flexible.

[0055] In this embodiment, preferably, please refer to [reference needed]. Figure 1 and Figure 4-5 A transmission groove 7 is provided on the fixed base 4, and a connecting block 8 is slidably connected to the inner wall of the transmission groove 7. A lead screw 9, which is threadedly connected to the connecting block 8, is rotatably connected to the transmission groove 7 on one of the fixed bases 4, and a sliding rod that movably passes through the connecting block 8 is provided in the transmission groove 7 on the other fixed base 4. When the transmission mechanism 6 is operated, the lead screw 9 will be driven to rotate. The rotation of the lead screw 9 will cause the connecting block 8 at this position to move along the transmission groove 7. The connecting block 8 will cause the mounting mechanism 5 connected at this position to move. The mounting mechanism 5 will cause the guide wheel 3 to move. The other side of the guide wheel 3 will cause the mounting mechanism 5 and the connecting block 8 to move together. The connecting block 8 on the other side will slide along the sliding rod.

[0056] In this embodiment, preferably, please refer to [reference needed]. Figure 4-5 The transmission mechanism 6 includes: a transmission rod 601, rotatably mounted on a fixed base 4 via bearings, with a worm gear 602 mounted on the transmission rod 601; and a worm wheel 603, mounted on a lead screw 9 and meshing with the worm gear 602. Rotating the transmission rod 601 drives the worm gear 602 to rotate, which in turn drives the worm wheel 603 to rotate, which in turn drives the lead screw 9 to rotate.

[0057] In this embodiment, preferably, please refer to [reference needed]. Figure 3-4 and Figure 6The guide wheel 3 is provided with mounting posts 11 on both sides, and mounting holes 12 are provided on the mounting posts 11. The mounting mechanism 5 includes: a sleeve post 501, which is rotatably mounted on the connecting block 8, and a shift cavity 502 is provided inside the sleeve post 501; a fixing block 503, which is slidably mounted in the shift cavity 502, and a first elastic element 504 is provided between the inner end of the fixing block 503 and the inner wall of the shift cavity 502. The first elastic element 504 in this application is a spring.

[0058] When installing the guide wheel 3, firstly, the fixing block 503 is moved towards the inside of the moving cavity 502, compressing the first elastic element 504. Then, the mounting holes 12 of the mounting posts 11 on both sides of the guide wheel 3 are aligned with the fixing blocks 503 on the corresponding mounting mechanism 5. After releasing the fixing blocks 503, the rebound force of the first elastic element 504 will cause the fixing blocks 503 to move outward and return to their initial position, and the fixing blocks 503 will enter the mounting holes 12, thus achieving the fixation of the mounting posts 11 and the guide wheel 3. When it is necessary to remove the guide wheel 3, the fixing blocks 503 can be moved towards the moving cavity 502 in the same way, so that the fixing blocks 503 are disengaged from the mounting holes 12, and the guide wheel 3 can then be removed.

[0059] In this embodiment, preferably, please refer to [reference needed]. Figure 6 The sleeve 501 has a sliding groove 13 that communicates with the sliding cavity 502. A connecting rod 14 is slidably arranged on the inner wall of the sliding groove 13, and the end of the connecting rod 14 is connected to the fixed block 503. By pushing the connecting rod 14, the connecting rod 14 will drive the fixed block 503 to move, which can easily move the fixed block 503, saving time and effort and making it highly practical.

[0060] In this embodiment, preferably, please refer to [reference needed]. Figure 1 It also includes: a second support rod 15, which is movably inserted inside the first support rod 1. Moving along the second support rod 15 changes the overall length of both the first and second support rods 15; and a third support rod 16, which is connected to the second support rod 15 via a connecting mechanism 2. By moving the second support rod 15 back and forth along the first support rod 1, the overall length of both the first and second support rods 15 can be changed, allowing it to be positioned at well openings of different sizes for various applications. After adjustment, it is fixed by the connecting mechanism 2. There is a gap between the third support rod 16 and the first support rod 1, allowing cables to easily pass between the two first support rods 1 and then through the guide wheel 3 for use.

[0061] In this embodiment, preferably, please refer to [reference needed]. Figure 1The connecting mechanism 2 includes: an outer connecting rod 201, disposed on the first support rod 1 or the second support rod 15; and an inner connecting rod 202, movably inserted into the outer connecting rod 201. Both the outer connecting rod 201 and the first support rod 1 are provided with limiting components 203, used to respectively limit and fix the inner connecting rod 202 and the second support rod 15. By sliding the inner connecting rod 202 along the outer connecting rod 201, the inner connecting rod 202 can drive the connected first support rod 1 or the third support rod 16 to move, thereby changing the distance between the two first support rods 1 and between the third support rod 16 and the second support rod 15. This not only facilitates the installation of guide wheels 3 of different specifications but also allows the first support rod 1 and the second support rod 15 to be positioned at wellheads of different sizes, making it widely applicable.

[0062] In this embodiment, preferably, please refer to [reference needed]. Figure 1 and Figure 7 A telescopic outer rod 21 is provided on the connecting outer rod 201, and a telescopic inner rod 22 is slidably inserted inside the telescopic outer rod 21. A third elastic element 23 is provided between one end of the telescopic inner rod 22 and the inner wall of the telescopic outer rod 21, and a limit wheel 24 is rotatably provided at the other end. The third elastic element 23 in this application is a spring. When the position of the second support rod 15 is adjusted, the second support rod 15 will drive the position of the connecting outer rod 201 and the limit wheel 24, which can adaptively change the position of the limit wheel 24. Before the cable is placed on the guide wheel 3, pressing the limit wheel 24 will drive the telescopic inner rod 22 to slide into the telescopic outer rod 21 and compress the third elastic element 23. When the cable is placed on the guide wheel 3, the limit wheel 24 is released. The rebound force of the third elastic element 23 will drive the limit wheel 24 to return to its initial position. Then, the limit wheel 24 limits the cable, which can greatly prevent the cable from falling off the guide wheel 3 during use, ensuring the stability of cable winding and unwinding, and making it highly practical.

[0063] Example 2:

[0064] Based on Example 1, please refer to Figure 8 The bottom of the connecting outer rod 201 is provided with an upper vertical tube 17, and a lower vertical tube 18 is slidably inserted inside the upper vertical tube 17. An arc-shaped plate 19 is provided on the lower vertical tube 18 to fit the inner wall of the pipe well opening. A limiting component 203 is also provided on the upper vertical tube 17 to fix the lower vertical tube 18.

[0065] After the first support rod 1 and the second support rod 15 are placed above the well opening, the arc-shaped plate 19 is made to fit against the well wall. The arc-shaped plate 19 can improve the stability of the device. When the cable is being wound up or down, the arc-shaped plate 19 will be attached to the well wall and restricted by the well wall, which will prevent the first support rod 1 and the second support rod 15 from moving, deviating or flipping. This can further ensure the stability when winding up or down the cable and is highly practical.

[0066] Moving the lower vertical pipe 18 along the upper vertical pipe 17 will cause the lower vertical pipe 18 to move the arc-shaped plate 19, thereby adjusting the height of the arc-shaped plate 19. Therefore, the height of the arc-shaped plate 19 can be changed by varying the distance between the manhole wall and the outside of the manhole, making it suitable for different pipe manholes and offering high flexibility. After adjustment, it is fixed by the limiting component 203.

[0067] In this embodiment, preferably, please refer to [reference needed]. Figure 9 The second support rod 15, the connecting inner rod 202, and the lower vertical tube 18 are all provided with multiple fixing holes 20. The limiting component 203 includes: a support plate 2031, which is disposed on the first support rod 1, the connecting outer rod 201, or the upper vertical tube 17; a fixing rod 2032, which movably passes through the support plate 2031, with one end adapted to the fixing hole 20 and the other end provided with a pull block 2033; and a second elastic element 2034, which is disposed between the pull block 2033 and the support plate 2031. By pulling the pull block 2033 outward, the pull block 2033 drives the fixing rod 2032 to move and stretches the second elastic element 2034, so that after the fixing rod 2032 disengages from the fixing hole 20, the fixing to the second support rod 15, the connecting inner rod 202, and the lower vertical tube 18 is released, and the second support rod 15, the connecting inner rod 202, and the lower vertical tube 18 can move. After the length and distance are adjusted, release the pull block 2033. The rebound force of the second elastic element 2034 will drive the fixed rod 2032 to return to its original position. Finally, the fixed rod 2032 will be inserted into the fixed hole 20 at the corresponding position, thus achieving fixation.

[0068] It should be understood that the examples and embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications or changes based on them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

[0069] It should be noted that if the embodiments of the present invention involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0070] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

Claims

1. A drag-reducing support for pipeline wellhead construction, characterized in that, include: There are two first support rods (1), and a connecting mechanism (2) is provided between the two first support rods (1) for adjusting the distance between the two first support rods (1); The guide wheel (3) is detachably mounted between the two first support rods (1) and is used to guide the construction cable. A fixed seat (4) is provided on the first support rod (1), and an installation mechanism (5) is provided on the fixed seat (4) for installing and fixing the guide wheel (3); The transmission mechanism (6) is located in the fixed base (4) and is used to drive the mounting mechanism (5) and the guide wheel (3) to move. The fixed seat (4) is provided with a transmission groove (7), and a connecting block (8) is slidably connected to the inner wall of the transmission groove (7). A screw (9) that is threadedly connected to the connecting block (8) is rotatably connected in the transmission groove (7) of one of the fixed seats (4), and a sliding rod that movably passes through the connecting block (8) is provided in the transmission groove (7) of the other fixed seat (4). The transmission mechanism (6) includes: The transmission rod (601) is rotatably mounted on the fixed seat (4) via a bearing, and a worm gear (602) is provided on the transmission rod (601). A worm gear (603) is mounted on the lead screw (9) and meshes with the worm (602); The guide wheel (3) is provided with mounting posts (11) on both sides, and mounting holes (12) are provided on the mounting posts (11). The mounting mechanism (5) includes: A sleeve (501) is rotatably mounted on the connecting block (8), and a sliding cavity (502) is provided inside the sleeve (501). A fixing block (503) is slidably disposed in the transfer cavity (502), and a first elastic element (504) is provided between the inner end of the fixing block (503) and the inner wall of the transfer cavity (502). The sleeve (501) has a sliding groove (13) that communicates with the sliding cavity (502). A connecting rod (14) is slidably arranged on the inner wall of the sliding groove (13), and the end of the connecting rod (14) is connected to the fixing block (503).

2. The drag-reducing support for pipeline wellhead construction according to claim 1, characterized in that, Also includes: The second support rod (15) is movably inserted inside the first support rod (1), and the overall length of the first support rod (1) and the second support rod (15) can be changed by moving along the second support rod (15). The third support rod (16) is connected to the second support rod (15) through the connecting mechanism (2).

3. The drag-reducing support for pipeline wellhead construction according to claim 2, characterized in that, The connecting mechanism (2) includes: The connecting rod (201) is installed on the first support rod (1) or the second support rod (15); The inner connecting rod (202) is movably inserted into the outer connecting rod (201); Both the outer connecting rod (201) and the first support rod (1) are provided with limiting components (203) for limiting and fixing the inner connecting rod (202) and the second support rod (15) respectively.

4. The drag-reducing support for pipeline wellhead construction according to claim 3, characterized in that, The bottom of the connecting outer rod (201) is provided with an upper vertical tube (17), and a lower vertical tube (18) is slidably inserted inside the upper vertical tube (17). An arc-shaped plate (19) is provided on the lower vertical tube (18) for fitting the inner wall of the pipe well opening. A limiting component (203) is also provided on the upper vertical tube (17) for fixing the lower vertical tube (18).

5. A drag-reducing support for pipeline wellhead construction according to claim 4, characterized in that, The second support rod (15), the connecting inner rod (202), and the lower vertical tube (18) are all provided with multiple fixing holes (20), and the limiting component (203) includes: Support plate (2031) is disposed on the first support rod (1) or the connecting outer rod (201) or the upper vertical tube (17); A fixed insertion rod (2032) is movably inserted through the support plate (2031), with one end adapted to the fixed hole (20) and the other end provided with a pull block (2033). The second elastic element (2034) is disposed between the pull block (2033) and the support plate (2031).

6. A drag-reducing support for pipeline wellhead construction according to claim 3, characterized in that, The connecting outer rod (201) is provided with a telescopic outer rod (21), and a telescopic inner rod (22) is slidably inserted inside the telescopic outer rod (21). A third elastic element (23) is provided between one end of the telescopic inner rod (22) and the inner wall of the telescopic outer rod (21), and a limit wheel (24) is rotatably provided at the other end.

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