Petroleum pipeline burying device

Abstract

The invention is suitable for the technical field of petroleum pipeline construction, and provides a petroleum pipeline burying device which comprises a hoisting base plate and further comprises a pipe supporting assembly used for supporting a to-be-mounted pipeline and adjusting the height of the pipe supporting assembly; the inner side of the main cylinder is provided with a centering fixing assembly used for centering, clamping and fixing an installed pipeline; the main cylinder is further provided with an alignment assembly used for controlling the installation ring to rotate, and the installation ring is provided with a centering fixing assembly used for clamping and fixing a to-be-installed pipeline and enabling the to-be-installed pipeline to correspond to an installed pipeline. And the abutting control assembly used for controlling the centering fixing assembly to move and enabling the to-be-installed pipeline to abut against the installed pipeline is installed at the end, away from the main cylinder, of the installation ring, and the abutting control assembly can control the abutting force of the to-be-installed pipeline abutting against the installed pipeline. Centering, clamping and fixing and hole position alignment of the pipeline are achieved, and meanwhile the construction efficiency is further improved through the controllable abutting force adjusting function.

Description

Technical Field

[0001] This invention belongs to the field of oil pipeline construction technology, and in particular relates to an oil pipeline burial device. Background Technology

[0002] With economic development and increasing energy demand, the extraction, transportation, and distribution of oil have become increasingly important. Oil pipelines, as one of the main methods for long-distance oil transportation, have become an indispensable part of the modern petroleum industry due to their advantages such as large capacity, low cost, and safety and reliability.

[0003] However, the laying of oil pipelines faces numerous challenges. In complex terrain conditions, such as mountains, deserts, and permafrost zones, traditional manual or simple mechanically assisted pipeline laying methods are not only inefficient but also prone to inaccurate connections, potentially increasing the risk of leaks during later use. Therefore, improving the accuracy, safety, and efficiency of oil pipeline laying is a pressing issue that needs to be addressed in the field of oil pipeline construction.

[0004] Traditional oil pipeline laying typically relies on simple mechanical tools and a large amount of manual labor. For example, during pipeline connection, workers often need to manually adjust the position of the pipes to ensure their axes are aligned, and then connect the two sections of pipe by welding or other methods. The problems are: it is difficult to guarantee that the connection will achieve the ideal accuracy every time, the whole process is time-consuming, and it is not conducive to large-scale rapid laying; for pipes of different diameters or types, traditional equipment may need to be frequently adjusted or even replaced with special tools, reducing versatility and flexibility.

[0005] Therefore, in view of the above situation, there is an urgent need to develop an oil pipeline laying device to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] The purpose of this invention is to provide an oil pipeline laying device, which aims to solve the problems mentioned in the background art.

[0007] This invention is implemented as follows: an oil pipeline laying device includes a hoisting base plate, and further includes: A support assembly is installed on one side of the lifting base plate and is used to support the pipe to be installed and adjust its height. The main cylinder is installed on the other side of the hoisting base plate, and a centering fixing component for centering and fixing the installed pipe is installed on the inner side of the main cylinder. The mounting ring is rotatably mounted on one end of the main cylinder near the support assembly. The main cylinder is also equipped with an alignment assembly for controlling the rotation of the mounting ring. The mounting ring is also equipped with an alignment and fixing assembly for clamping and fixing the pipe to be installed and making it correspond to the installed pipe. The mounting ring has an abutment control component installed at the end away from the main cylinder. This component controls the movement of the centering fixing component and causes the pipe to be installed to abut against the installed pipe. The abutment control component can control the magnitude of the abutment force between the pipe to be installed and the installed pipe.

[0008] A further technical solution includes a locking screw, an adjusting cylinder, an adjusting frame, a stretching cylinder A, ball bearings, and a curved support plate. An inverted U-shaped adjusting frame is fixed on the lifting base plate. Multiple adjusting cylinders are slidably arranged on the horizontal part of the adjusting frame. The adjusting cylinders are also equipped with locking screws for locking them to the adjusting frame. A stretching cylinder A is fixed to the upper side of the adjusting cylinder. A curved support plate is fixed to the end of the telescopic spindle of the stretching cylinder A. Several ball bearings are installed on the upper side of the curved support plate.

[0009] In a further technical solution, the centering fixing component includes a clamping plate B and a stretching cylinder C. Multiple stretching cylinders C are circumferentially distributed and fixed on the inner side of the main cylinder, and an arc-shaped clamping plate B is fixed to the end of the telescopic spindle of the stretching cylinder C.

[0010] In a further technical solution, the alignment assembly includes a gear A, a reducer B, a motor B, a mounting base, and an external gear ring. An external gear ring is fixed to the outer side of the mounting ring near the main cylinder. The reducer B and the motor B are fixed to the main cylinder via the mounting base. The output shaft of the motor B is connected to the input shaft of the reducer B. A gear A that meshes with the external gear ring is fixed to the output shaft of the reducer B.

[0011] In a further technical solution, the mounting ring is provided with multiple adjustment ports distributed circumferentially. The centering and fixing component includes a moving block, a balance ridge, a clamping plate A, and a stretching cylinder B. Balance ridges are fixed on both sides of the adjustment ports. A moving block is slidably arranged between the two balance ridges. A stretching cylinder B is fixed on the inner side of the moving block. An arc-shaped clamping plate A is fixed to the end of the telescopic spindle of the stretching cylinder B.

[0012] A further technical solution includes a transmission housing fixed to the end of the mounting ring away from the main cylinder. A lead screw is rotatably mounted inside the adjustment port of the mounting ring. The lead screw is also threadedly connected to a moving block. One end of the lead screw extends into the inner cavity of the transmission housing and is fixed with a gear B. An internal gear ring that meshes with gear B is also rotatably mounted in the inner cavity of the transmission housing. A motor A and a reducer A are also fixed to the outside of the transmission housing. The output shaft of the motor A is connected to the input shaft of the reducer A. The output shaft of the reducer A is fixedly connected to a power shaft rotatably mounted on the transmission housing. A sliding rod is slidably mounted on the power shaft. A connecting shaft is fixed to the end of the sliding rod away from the power shaft. An adjustment plate is rotatably mounted on the connecting shaft. Multiple extension cylinders D are fixed to the outer ring of the adjustment plate. The cylinder body of the extension cylinder D is fixedly connected to the cavity wall of the transmission housing. A transmission head is fixed to the end of the connecting shaft away from the sliding rod. A transmission groove that mates with the transmission head is opened at the end of one of the lead screws.

[0013] In a further technical solution, the cross-section of the sliding rod is a regular polygon, and a sliding cavity is provided on the power shaft to slide and connect with the sliding rod; the transmission head adopts a frustum structure, and a friction layer is provided on the surface of the transmission head and the inner side of the transmission groove.

[0014] In a further technical solution, the mounting ring is also provided with multiple operating ports distributed circumferentially.

[0015] In a further technical solution, a support ring is rotatably mounted on the outer side of the transmission housing, and the support ring and the main cylinder are respectively mounted and fixed on the hoisting base plate through support B and support A.

[0016] In a further technical solution, lifting lugs A are fixed on both sides of the end of the hoisting base plate away from the main cylinder, and lifting lugs B are fixed on both sides of the top of the main cylinder.

[0017] The oil pipeline laying device provided by this invention has the following beneficial effects: Place the pipe to be installed on the support assembly, and make the support assembly control the pipe to be installed to be coaxial with the position of the central fixing assembly that clamps and fixes the installed pipe (pre-adjust according to the diameter of the pipe). Then, the base plate can be lifted into the construction area by a crane and the end of the installed pipe can be inserted into the main cylinder.

[0018] Activating the centering and fixing component will clamp and fix the installed pipe in the center, thereby positioning the entire hoisting base plate and facilitating the docking process between the pipe to be installed and the installed pipe.

[0019] The centering and fixing components can clamp and fix the pipe to be installed and make it correspond to the installed pipe. Furthermore, the concentric effect of clamping and fixing can be used to make the pipe to be installed and the installed pipe accurately aligned.

[0020] Based on the mounting hole positions of the pipe to be installed and the pipe already installed, the alignment component is activated to control the rotation of the mounting ring, thereby aligning the mounting hole positions of the pipe to be installed and the pipe already installed.

[0021] Then, the contact control component is activated to move the centering and fixing component and make the pipe to be installed contact with the pipe already installed, so that the pipe to be installed and the pipe already installed can be installed and fixed, which is convenient and quick.

[0022] In addition, the contact control component can also control the contact force between the pipe to be installed and the installed pipe, making the contact installation process between the pipe to be installed and the installed pipe controllable and improving the adaptability and flexibility of the installation.

[0023] In summary, this invention achieves alignment, clamping, and hole alignment between the pipe to be installed and the installed pipe, ensuring high precision and stability during docking. Furthermore, its controllable force adjustment function further enhances the safety, adaptability, and operational flexibility of the installation process, greatly simplifying pipe connection procedures and improving construction efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the oil pipeline laying device provided in an embodiment of the present invention; Figure 2 for Figure 1 Another perspective structural diagram; Figure 3 This is a side sectional view of the transmission housing portion in the oil pipeline laying device provided in an embodiment of the present invention. Figure 4 for Figure 3 A magnified structural diagram of part A in the middle; Figure 5 A schematic diagram of the main sectional view of the reducer A and the lead screw connection part in the oil pipeline laying device provided in an embodiment of the present invention; Figure 6 for Figure 5 A partially enlarged structural diagram.

[0025] In the diagram: 1-Lifting base plate, 2-Locking screw, 3-Adjusting cylinder, 4-Adjusting frame, 5-Lifting lug A, 6-Extension cylinder A, 7-Ball bearing, 8-Curved support plate, 9-Pipe to be installed, 10-Motor A, 11-Reducer A, 12-Support ring, 13-Mounting ring, 14-Moving block, 15-Balance ridge, 16-Gear A, 17-Reducer B, 18-Motor B, 19-Supporting seat, 20-Main cylinder, 21-Lifting lug B, 22-Installed pipe 23-External gear ring, 24-Clamping plate A, 25-Extension cylinder B, 26-Support A, 27-Adjustment port, 28-Operation port, 29-Transmission housing, 30-Support B, 31-Clamping plate B, 32-Extension cylinder C, 33-Screw, 34-Internal gear ring, 35-Gear B, 36-Transmission head, 37-Power shaft, 38-Sliding cavity, 39-Extension cylinder D, 40-Control plate, 41-Sliding rod, 42-Connecting shaft, 43-Transmission groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] like Figure 1-2 As shown, an oil pipeline laying device according to an embodiment of the present invention includes a hoisting base plate 1, and further includes: A support assembly is installed on one side of the lifting base plate 1. The support assembly is used to support the pipe 9 to be installed and adjust its height. Main cylinder 20, which is installed on the other side of the hoisting base plate 1, and a centering fixing component for centering and fixing the installed pipe 22 is installed on the inner side of the main cylinder 20; Mounting ring 13 is rotatably mounted on one end of main cylinder 20 near the support assembly. Alignment assembly for controlling the rotation of mounting ring 13 is also mounted on main cylinder 20. Alignment and fixing assembly for clamping and fixing pipe 9 to be installed and making it correspond to installed pipe 22 is also mounted on mounting ring 13. The mounting ring 13 is equipped with an abutment control component at the end away from the main cylinder 20. This component controls the movement of the centering fixing component and causes the pipe to be installed 9 to abut against the installed pipe 22. The abutment control component can control the magnitude of the abutment force between the pipe to be installed 9 and the installed pipe 22.

[0029] In this embodiment of the invention, the pipe to be installed 9 is placed on the support assembly, and the support assembly controls the pipe to be installed 9 to be coaxial with the position where the centering fixing assembly clamps and fixes the installed pipe 22 (pre-adjustment is required based on the pipe diameter). Then, the hoisting base plate 1 can be suspended by a crane and entered into the construction area, allowing the end of the installed pipe 22 to pass into the main cylinder 20. Activating the centering fixing assembly clamps and fixes the installed pipe 22 in the center, thereby positioning the hoisting base plate 1 as a whole, which facilitates the docking process between the pipe to be installed 9 and the installed pipe 22. The centering fixing assembly clamps and fixes the pipe to be installed 9 and aligns it with the installed pipe 22, further utilizing the concentric effect of clamping and fixing to accurately align the pipe to be installed 9 and the installed pipe 22. Based on the mounting hole positions of the pipe to be installed 9 and the installed pipe 22, the alignment assembly controls the rotation of the mounting ring 13, thereby aligning the mounting hole positions of the pipe to be installed 9 and the installed pipe 22. The contact control component is then activated to move the centering and fixing component, causing the pipe to be installed (9) to contact the installed pipe (22). This allows for the convenient and quick installation and fixing of both pipes. Furthermore, the contact control component can control the contact force between the pipe to be installed (9) and the installed pipe (22), making the installation process controllable and improving the adaptability and flexibility of the installation.

[0030] like Figure 1-2 As shown, in a preferred embodiment of the present invention, the support assembly includes a locking screw 2, an adjusting cylinder 3, an adjusting frame 4, a stretching cylinder A6, ball bearings 7, and a curved support plate 8. An inverted U-shaped adjusting frame 4 is fixed on the lifting base plate 1. Multiple adjusting cylinders 3 are slidably arranged on the horizontal part of the adjusting frame 4. The adjusting cylinders 3 are also equipped with locking screws 2 for locking them to the adjusting frame 4. The stretching cylinder A6 is fixed on the upper side of the adjusting cylinder 3. The curved support plate 8 is fixed to the end of the telescopic spindle of the stretching cylinder A6. Several ball bearings 7 are installed on the upper side of the curved support plate 8. The length of the adjusting frame 4, the number of adjusting cylinders 3, and the position of the adjusting cylinders 3 can be set according to the length of the pipe to be installed 9 to meet the support requirements of the pipe to be installed 9; through the cooperation of the ball bearing 7 and the curved support plate 8, the pipe to be installed 9 can be stably centered and rolled, which is conducive to the movement of the pipe to be installed 9; the height of the pipe to be installed 9 can be controlled by the extension cylinder A6, which makes it easy for the pipe to be installed 9 to be initially aligned with the clamped installed pipe 22, which facilitates the subsequent installation process.

[0031] The centering fixing assembly includes a clamping plate B31 and extension cylinders C32. Multiple extension cylinders C32 are circumferentially distributed and fixed on the inner side of the main cylinder 20. An arc-shaped clamping plate B31 is fixed to the end of the telescopic spindle of each extension cylinder C32. By controlling the simultaneous extension and retraction of multiple extension cylinders C32, multiple clamping plates B31 can cooperate to center-clamp the installed pipe 22, allowing the lifting base plate 1 to adapt its position and thus ensuring accurate alignment between the pipe to be installed 9 and the installed pipe 22.

[0032] The alignment assembly includes gear A16, reducer B17, motor B18, mounting base 19, and external gear ring 23. The external gear ring 23 is fixed to the outer side of the mounting ring 13 near the main cylinder 20. Reducer B17 and motor B18 are fixed to the main cylinder 20 via mounting base 19. The output shaft of motor B18 is connected to the input shaft of reducer B17. Gear A16, which meshes with the external gear ring 23, is fixed to the output shaft of reducer B17. Starting motor B18 drives the mounting ring 13 to rotate via the transmission of gear A16 and external gear ring 23, thereby rotating the pipe to be installed 9 and aligning the mounting holes of the pipe to be installed 9 with those of the already installed pipe 22.

[0033] like Figure 1-2 As shown in a preferred embodiment of the present invention, the mounting ring 13 has multiple adjusting ports 27 distributed circumferentially. The centering and fixing assembly includes a moving block 14, a balancing ridge 15, a clamping plate A24, and a tension cylinder B25. Balancing ridges 15 are fixed on both sides of the adjusting ports 27. A moving block 14 is slidably disposed between the two balancing ridges 15. A tension cylinder B25 is fixed to the inner side of the moving block 14. An arc-shaped clamping plate A24 is fixed to the end of the telescopic spindle of the tension cylinder B25. By simultaneously controlling the extension and retraction of multiple tension cylinders B25, the multiple clamping plates A24 can be used to center and clamp the pipe 9 to be installed. Furthermore, because the mounting ring 13 and the main cylinder 20 are concentrically arranged, the pipe 9 to be installed can be accurately aligned with the already installed pipe 22.

[0034] like Figure 1-6As shown, in a preferred embodiment of the present invention, the abutment control assembly includes a transmission housing 29 fixed to the end of the mounting ring 13 away from the main cylinder 20. A lead screw 33 is rotatably mounted inside the adjustment port 27 of the mounting ring 13. The lead screw 33 is also threadedly connected to the moving block 14. One end of the lead screw 33 extends into the inner cavity of the transmission housing 29 and is fixed with a gear B35. An internal gear ring 34 that meshes with the gear B35 is also rotatably mounted in the inner cavity of the transmission housing 29. A motor A10 and a reducer A11 are also fixed to the outside of the transmission housing 29. The output shaft of the motor A10 is connected to the output shaft of the reducer A11. The output shaft of the reducer A11 is fixedly connected to the power shaft 37 rotatably mounted on the transmission housing 29. A sliding rod 41 is slidably mounted on the power shaft 37. A connecting shaft 42 is fixed to the end of the sliding rod 41 away from the power shaft 37. An adjusting plate 40 is rotatably mounted on the connecting shaft 42. Multiple extension cylinders D39 are fixed to the outer ring of the adjusting plate 40. The cylinder body of the extension cylinder D39 is fixedly connected to the cavity wall of the transmission housing 29. A transmission head 36 is fixed to the end of the connecting shaft 42 away from the sliding rod 41. One of the lead screws 33 has a transmission groove 43 that mates with the transmission head 36 at its end. Through the arrangement of the power shaft 37, sliding rod 41, connecting shaft 42 and transmission head 36, the power output to the lead screw 33 can be maintained. And by using the transmission of the internal gear ring 34 and gear B35, all the lead screws 33 can rotate, so as to achieve the purpose of synchronous adjustment and movement of all the moving blocks 14. In addition, the contact force between the transmission head 36 and the transmission groove 43 can be controlled by the extension cylinder D39, thereby adjusting the transmission force on the lead screw 33, and further adjusting the contact force between the pipe to be installed 9 and the installed pipe 22. That is, when the contact force exceeds the set value, the transmission head 36 cannot drive the lead screw 33 to rotate, making the whole system flexible and reliable.

[0035] Preferably, the cross-section of the sliding rod 41 is a regular polygon, and the power shaft 37 is provided with a sliding cavity 38 that is slidably connected to the sliding rod 41, so as to ensure stable power output.

[0036] Preferably, the transmission head 36 adopts a frustum structure, and the surface of the transmission head 36 and the inner side of the transmission groove 43 are provided with a friction layer (not shown) to facilitate reliable adjustment of the transmission force.

[0037] like Figure 1-2 As shown, in a preferred embodiment of the present invention, the mounting ring 13 is also provided with a plurality of operating ports 28 distributed circumferentially, which facilitates installation operations, such as fixing the pipe to be installed 9 and the installed pipe 22 by bolt connection.

[0038] A support ring 12 is rotatably mounted on the outer side of the transmission housing 29. The support ring 12 and the main cylinder 20 are respectively mounted and fixed on the lifting base plate 1 via support B30 and support A26, thereby improving its stability. The arrangement of the support ring 12 provides rotational support for the transmission housing 29, which can improve the overall stability of the mounting ring 13.

[0039] The lifting base plate 1 is fixed with lifting lugs A5 on both sides of the end away from the main cylinder 20, and the top of the main cylinder 20 is fixed with lifting lugs B21 on both sides. The lifting lugs A5 and B21 facilitate the relatively stable suspension and movement of the lifting base plate 1 by the suspension equipment, resulting in high reliability.

[0040] The above embodiments of the present invention provide an oil pipeline laying device, the working principle of which is summarized as follows: The pipe 9 to be installed is placed on the support assembly. Through the cooperation of the adjusting cylinder 3, the extension cylinder A6, and the curved support plate 8, the height and position of the pipe 9 to be installed can be adjusted to ensure that it is coaxial with the installed pipe 22. The design of the ball bearing 7 allows the pipe 9 to be installed to move and roll when needed, facilitating fine-tuning of its position.

[0041] The hoisting base plate 1 is suspended into the construction area by a crane, so that the end of the installed pipe 22 is inserted into the main cylinder 20. The centering fixing assembly (clamping plate B31 and extension cylinder C32) is activated to center and clamp the installed pipe 22, thereby achieving the overall positioning of the hoisting base plate 1.

[0042] The centering and fixing components (moving block 14, clamping plate A24 and extension cylinder B25) on the mounting ring 13 then clamp and fix the pipe 9 to be installed, using the concentric effect of clamping and fixing to ensure that the pipe 9 to be installed is accurately aligned with the installed pipe 22.

[0043] By controlling the motor B18, reducer B17 and gear A16, the mounting ring 13 can be rotated, which in turn drives the pipe to be installed 9 to rotate until the mounting holes of the pipe to be installed 9 and the installed pipe 22 are aligned.

[0044] The contact control assembly maintains the power output to the lead screw 33 through components such as the power shaft 37, sliding rod 41, connecting shaft 42 and transmission head 36, and uses the transmission of the internal gear ring 34 and gear B35 to make all moving blocks 14 move synchronously, pushing the pipe to be installed 9 closer to the installed pipe 22 until the two contact.

[0045] The extension cylinder D39 on the control plate 40 can precisely control the force of the pipe to be installed 9 against the installed pipe 22, ensuring the safety and controllability of the installation process.

[0046] Once the pipe to be installed 9 and the installed pipe 22 are accurately connected and fixed, the final installation operation can be performed through the operating port 28, such as using bolts to connect the two pipe sections to complete the entire installation process.

[0047] In summary, this device significantly improves the accuracy, safety, and efficiency of oil pipeline installation, reduces the need for manual intervention, and is suitable for pipeline laying work in various complex environments.

[0048] The control of each component can be achieved using a PLC controller disclosed in the existing technology. There are no specific limitations on the model and circuit connection of each component, and they can be flexibly set in actual applications.

[0049] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A petroleum pipeline burying device, comprising a lifting base plate (1), characterized in that: Also includes: A trustee assembly, the trustee assembly being mounted on one side of the hoisting base plate (1), the trustee assembly being used to support the pipe (9) to be mounted and to adjust its height; A main cylinder (20), the main cylinder (20) being mounted on the other side of the hanging base plate (1), and a centering fixing assembly for centering and fixing the installed pipe (22) being mounted on the inner side of the main cylinder (20); a mounting ring (13), the mounting ring (13) being rotatably mounted on one end of the main cylinder (20) close to the tube assembly, the main cylinder (20) also being provided with an alignment assembly for controlling the rotation of the mounting ring (13), the mounting ring (13) being provided with a centering and fixing assembly for clamping and fixing the pipe to be installed (9) and making it correspond to the installed pipe (22); An abutment control component is installed at one end of the mounting ring (13) away from the main tube (20) and is used to control the movement of the centering fixing component and make the pipe to be installed (9) abut against the installed pipe (22), and the abutment control component can control the abutment force of the pipe to be installed (9) abutting against the installed pipe (22).

2. The petroleum pipeline burying device according to claim 1, characterized in that: The tube support assembly comprises a locking screw (2), an adjustment cylinder (3), an adjustment frame (4), an extension cylinder A (6), a ball bearing (7) and a curved support plate (8); An inverted U-shaped adjustment frame (4) is fixed on the hanging base plate (1); a plurality of adjustment cylinders (3) are slidably provided on the horizontal portion of the adjustment frame (4); and locking screws (2) are also installed on the adjustment cylinders (3) for locking and fixing them on the adjustment frame (4); An extension cylinder A (6) is fixed on the upper side of the adjustment cylinder (3), a curved support plate (8) is fixed on the end of the telescopic core shaft of the extension cylinder A (6), and a plurality of balls (7) are installed on the upper side of the curved support plate (8).

3. The petroleum pipeline burying device according to claim 1, characterized in that: The centering fixing assembly comprises a clamping plate B (31) and an extension cylinder C (32); A plurality of extension cylinders C (32) are installed and fixedly arranged in a circumferential direction on the inner side of the main cylinder (20), and arc-shaped clamping plates B (31) are fixedly arranged at the ends of the telescopic core shafts of the extension cylinders C (32).

4. The petroleum pipeline burying device according to claim 1, characterized in that: The alignment assembly comprises a gear A (16), a reducer B (17), a motor B (18), a mounting seat (19) and an outer gear ring (23); An outer gear ring (23) is fixed on the outer side of one end of the mounting ring (13) close to the main cylinder (20); A reducer B (17) and a motor B (18) are fixed to the main cylinder (20) via a mounting seat (19); an output shaft of the motor B (18) is connected to an input shaft of the reducer B (17); and a gear A (16) meshingly connected to an outer gear ring (23) is fixed to the output shaft of the reducer B (17).

5. The petroleum pipeline burying device according to any one of claims 1 to 4, characterized in that: The mounting ring (13) is provided with a plurality of adjustment openings (27) distributed circumferentially; The centering and fixing assembly comprises a moving block (14), a balancing ridge (15), a clamping plate A (24) and an extension cylinder B (25); Balance ridges (15) are fixed on both sides of the adjustment port (27), a moving block (14) is slidably provided between the two balance ridges (15), an extension cylinder B (25) is fixed on the inner side of the moving block (14), and a clamping plate A (24) in the shape of an arc is fixed to the end of the telescopic core shaft of the extension cylinder B (25).

6. The petroleum pipeline burying device according to claim 5, characterized in that: The abutment control assembly comprises a transmission housing (29) fixed to an end of the mounting ring (13) away from the main cylinder (20); a screw rod (33) is rotatably arranged in the adjustment opening (27) of the mounting ring (13); the screw rod (33) is also threadedly connected to the moving block (14); one end of the screw rod (33) extends into the inner cavity of the transmission housing (29) and is fixed with a gear B (35); An inner gear ring (34) meshingly connected to the gear B (35) is rotatably mounted in the inner cavity of the transmission housing (29); A motor A (10) and a reducer A (11) are also fixed to the outside of the transmission housing (29); the output shaft of the motor A (10) is connected to the input shaft of the reducer A (11); and the output shaft of the reducer A (11) is fixedly connected to a power shaft (37) rotatably mounted on the transmission housing (29); A sliding rod (41) is slidably provided on the power shaft (37), a connecting shaft (42) is fixed to one end of the sliding rod (41) away from the power shaft (37), a regulating plate (40) is rotatably mounted on the connecting shaft (42), a plurality of extension cylinders D (39) are fixed to the outer ring of the regulating plate (40), and a cylinder body of the extension cylinder D (39) is fixedly connected to the cavity wall of the transmission housing (29); A transmission head (36) is fixed to one end of the connecting shaft (42) away from the sliding rod (41), and a transmission groove (43) is formed at the end of one of the screw rods (33) and is matched and connected to the transmission head (36).

7. The petroleum pipeline burying device according to claim 6, characterized in that: The cross section of the sliding rod (41) is a regular polygon, and the power shaft (37) is provided with a sliding cavity (38) which is slidably connected to the sliding rod (41); The transmission head (36) adopts a truncated cone structure, and a friction layer is provided on the surface of the transmission head (36) and the inner side of the transmission groove (43).

8. The petroleum pipeline burying device according to claim 6, characterized in that: The mounting ring (13) is also provided with a plurality of operating openings (28) distributed in a circumferential direction.

9. The petroleum pipeline burying device according to claim 6, characterized in that: A support ring (12) is also rotatably mounted on the outer side of the transmission housing (29); the support ring (12) and the main cylinder (20) are respectively mounted and fixed on the hanging base plate (1) via a support B (30) and a support A (26).

10. The petroleum pipeline burying device according to any one of claims 1 to 4, characterized in that: Lifting ears A (5) are fixed on both sides of one end of the lifting base plate (1) away from the main cylinder (20); Lifting ears B (21) are fixed on both sides of the top of the main tube (20).

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