Large-diameter pipe transport apparatus

Abstract

The application discloses a large-diameter pipeline transportation equipment and relates to the technical field of pipeline transportation. The large-diameter pipeline transportation equipment comprises a fixing frame, two winches are arranged at the bottom of the fixing frame, fixing plates are arranged at the bottom of the two winches, a supporting plate is arranged at one side of the bottom of the two fixing plates, a support is fixedly connected to one end of the supporting plate, a fixing sleeve is fixedly connected to the bottom end of the support, a supporting sleeve is fixedly connected to one side of the fixing sleeve, rotating sleeves are rotatably connected to the interiors of a plurality of fixing cylinders, threaded rods are arranged in the rotating sleeves, threaded sleeves are fixedly connected to the interiors of the top ends of the fixing cylinders, a rotating frame is rotatably connected to the top end of the threaded rod, supporting plates are fixedly connected to the two sides of the rotating frame, rotating rods are rotatably connected to the interiors of the two supporting plates, and supporting wheels are fixedly connected to the outer sides of the two rotating rods. The large-diameter pipeline transportation equipment can realize force fixation of the inner wall and the outer wall of the pipeline at the same time, and can enhance the anti-overturning and anti-shaking capability of the pipeline during the transportation process in a hole.

Description

Technical Field

[0001] This invention relates to the field of pipeline transportation technology, specifically a large-diameter pipeline transportation device. Background Technology

[0002] Large-diameter pipelines are critical infrastructure in water conveyance tunnels, urban utility tunnels, and energy transmission projects. Horizontal transportation of these pipelines over long distances in narrow-section tunnels or within complex construction sites presents a significant challenge to project progress and safety. As the core hub connecting the manufacturing site and the installation work area, the structural rationality of pipeline transportation equipment directly determines construction efficiency and pipe integrity.

[0003] Currently, the industry primarily relies on trolleys, hydraulic flatbed trucks, or track laying combined with winch traction for transporting large-diameter pipelines within tunnels. Existing trolleys, such as the pipeline transport trolley disclosed in Chinese Patent No. CN219948220U, use retractable adjustable support components and straps to secure the pipeline. While this solution improves the ease of equipment relocation through its detachable and foldable structure, its securing method depends on binding the pipeline to the outer wall with straps, which is a form of flexible constraint. In long-distance tunnels with steep gradients or slippery surfaces, relying solely on binding the outer wall is insufficient to effectively suppress axial movement and radial rolling of the pipeline. Especially when the pipeline itself is heavy, inertial impacts can easily cause the bindings to loosen, posing a significant safety hazard.

[0004] In addition, another commonly used type of equipment is a transport vehicle with a V-shaped bracket, which supports the pipe by bearing the outer wall of the tunnel. However, this type of equipment has poor adaptability to different pipe diameters, usually requiring the replacement of brackets or pads of different specifications, and also lacks the ability to coordinate internal active support and external multi-point clamping for pipe fixation. When lifting, positioning, and adjusting the attitude within the limited space inside the tunnel, existing equipment generally suffers from problems such as difficulty in leveling, easy pipe slippage, and inability to adapt to transportation on slope sections, seriously affecting construction safety and installation accuracy. Summary of the Invention

[0005] The purpose of this invention is to provide a large-diameter pipeline transportation device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large-diameter pipeline transportation device, comprising a fixed frame, two winches arranged at the bottom of the fixed frame, a fixed plate arranged at the bottom of each of the two winches, a support plate arranged on one side of the bottom of each of the two fixed plates, a bracket fixedly connected to one end of each support plate, a fixed sleeve fixedly connected to the bottom end of each bracket, a support sleeve fixedly connected to one side of each fixed sleeve, a plurality of fixed cylinders rotatably connected inside the support sleeve, a plurality of rotating sleeves rotatably connected inside each of the plurality of forward and reverse motors, a threaded rod arranged inside the rotating sleeve, a threaded sleeve fixedly connected to the top end of each forward and reverse motor, the threaded rod passing through the threaded sleeve and threadedly connected to the threaded sleeve, a rotating frame rotatably connected to the top end of the threaded rod, support plates fixedly connected to both sides of the rotating frame, rotating rods rotatably connected inside each of the two support plates, and support wheels fixedly connected to the outer sides of each of the two rotating rods.

[0007] Preferably, the rotating sleeve has integrally formed limit plates on both sides, and the fixed cylinder has limit grooves on both sides. The two limit plates are slidably connected to the two limit grooves and are adapted to the two limit grooves. The two limit plates limit and guide the limit grooves on both sides of the threaded rod.

[0008] Preferably, each of the multiple rotating sleeves has a rotating shaft fixedly connected to its bottom end, the multiple rotating shafts respectively penetrate the bottom end wall of the multiple fixed cylinders and are rotatably connected to the multiple fixed cylinders, and each of the multiple rotating shafts has a first bevel gear fixedly connected to its bottom end.

[0009] Preferably, a second bevel gear is fixedly connected to the outer side, and multiple first bevel gears are meshed with the second bevel gear. A forward and reverse motor is fixedly connected inside the fixed sleeve. The output end of the forward and reverse motor passes through the support sleeve and is rotatably connected to the support sleeve. The output end of the forward and reverse motor is fixedly connected to the support sleeve, so that the forward and reverse motor can be started and rotated, thereby driving the second bevel gear to rotate, and thus driving the multiple first bevel gears to rotate.

[0010] Preferably, both sides of the threaded sleeve are integrally formed with side plates, and the bottom of each of the two side plates is fixedly connected with a limiting sleeve. The inside of each of the two limiting sleeves is slidably connected with a sliding rod, the top of each of the two sliding rods is fixedly connected to the bottom of the rotating frame, and a spring is sleeved on the outside of each of the two sliding rods. The two ends of the spring are fixedly connected to the side plate and the rotating frame respectively, so as to support the support plate and improve stability.

[0011] Preferably, a bidirectional lead screw is rotatably connected inside the fixed frame, and movable seats are slidably connected to both sides inside the fixed frame. The threads at both ends of the bidirectional lead screw are set in opposite directions. The two movable seats are respectively threaded to both ends of the bidirectional lead screw. A motor is installed at one end inside the fixed frame, and the bidirectional lead screw is fixedly connected to the output end of the motor, so that the bidirectional lead screw rotates and drives the two movable seats to move relative to each other.

[0012] Preferably, the two winches are respectively installed at the bottom of the two movable seats. Steel cables are sleeved and wound on the outside of the two winches. The bottom ends of the two steel cables are respectively fixedly connected to the two fixed plates. The steel cables are wound and unwound by starting the movable seats, thereby driving the fixed plates to rise and fall.

[0013] Preferably, both bottom sides of the two fixed plates are fixedly connected with cables, and the bottom ends of the two cables are fixedly connected with rotating blocks. Both top sides of the support plate and the bracket are fixedly connected with lifting blocks. The two rotating blocks are respectively hinged to the two lifting blocks, so that the rotating blocks support the lifting blocks and drive the support plate and the bracket to rise and fall.

[0014] Preferably, a support block is fixedly connected to the top of the support plate, and upper hinge plates are hinged to both sides of the support block. A hydraulic cylinder is fixedly connected to one side of each of the two upper hinge plates, and a lower hinge plate is fixedly connected to the output end of each of the two hydraulic cylinders. A base plate is fixedly connected to the bottom of the support plate, and grippers are hinged to both sides of the base plate. Push plates are fixedly connected to the top of each of the two grippers, and the two lower hinge plates are respectively hinged to the two push plates. This allows the hydraulic cylinders to start and move the lower hinge plates, which in turn move the push plates, thereby deflecting the grippers on both sides to facilitate gripping and releasing the pipeline.

[0015] Preferably, each end of the fixing frame is fixedly connected to a vertical plate, each of the two vertical plates is provided with a base on one side, and each of the two bases is fixedly connected to a connecting seat on the top. The base and the connecting seat are respectively hinged to the upper and lower ends of the vertical plate, and each of the two bases is rotatably connected to a traveling wheel on both sides.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This application provides multi-point uniform support from inside the pipeline, adapting to large-diameter pipelines with different inner diameters. It effectively prevents pipeline slippage or movement during transportation, improving transportation safety and stability. After the hydraulic cylinder is activated, it pushes the two side grippers to deflect towards the center through hinged transmission, clamping the outer wall of the pipeline. This outer wall clamping structure works in conjunction with the internal support wheels to achieve simultaneous force fixation of the inner and outer walls of the pipeline, significantly enhancing the pipeline's anti-overturning and anti-swaying capabilities during tunnel transportation, making it particularly suitable for long-distance transportation under steep slopes or complex road conditions.

[0017] 2. This application utilizes a fixed frame, winch, fixed plate, movable seat, double-acting screw, cable, rotating block, and lifting block. The motor drives the double-acting screw to rotate, causing the movable seats on both sides to move relative to each other, thereby adjusting the lateral distance between the winch and the fixed plate to accommodate the lifting needs of pipes of different lengths. Simultaneously, the winch uses cable winding to raise and lower the support plate and bracket, facilitating pipe lifting and positioning, and improving the equipment's adaptability to different pipe specifications and different work sites.

[0018] 3. This application, by setting up a vertical plate, connecting seat, base, and traveling wheels, allows the fixed frame to be quickly connected to an external vehicle head at both ends via the connecting seat, enabling front and rear dual-head traction. This facilitates bidirectional movement and turning around in narrow spaces such as tunnels or culverts. The traveling wheels rotate flexibly, and combined with the hinged structure of the base and vertical plate, they can adapt to slight swaying caused by uneven ground, improving the passability and operational efficiency of the transport equipment in complex terrain inside tunnels. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the vertical plate of the present invention; Figure 3 This is a schematic diagram of the structure of the movable base of the present invention; Figure 4 This is a schematic diagram of the gripper structure of the present invention; Figure 5 This is a schematic diagram of the structure of the bracket of the present invention; Figure 6 This is a schematic diagram of the structure of the bracket of the present invention; Figure 7 This is a schematic diagram of the support sleeve of the present invention; Figure 8 This is a schematic diagram of the structure of the rotating shaft of the present invention; Figure 9 This is a schematic diagram of the support plate of the present invention; Figure 10 This is a schematic diagram of the rotating frame of the present invention; Figure 11 This is a schematic diagram of the limiting sleeve of the present invention.

[0020] Labels in the diagram: 1. Fixed frame; 2. Winch; 3. Fixed plate; 4. Support plate; 5. Bracket; 6. Fixed sleeve; 7. Support sleeve; 8. Rotating shaft; 9. Fixed cylinder; 10. Rotating sleeve; 11. Threaded rod; 12. Threaded sleeve; 13. Rotating frame; 14. Support wheel; 15. Support plate; 16. Rotating rod; 17. Limiting groove; 18. Limiting plate; 19. Rotating shaft; 20. First bevel gear; 21. Second bevel gear ; 22. Limiting sleeve; 23. Slide rod; 24. Spring; 25. Side plate; 26. Support block; 27. Base plate; 28. Gripper; 29. ​​Hydraulic cylinder; 30. Upper hinge plate; 31. Lower hinge plate; 32. Push plate; 33. Lifting block; 34. Rotating block; 35. Cable; 36. Moving seat; 37. Two-way lead screw; 38. Vertical plate; 39. Connecting seat; 40. Base; 41. Traveling wheel; 42. Forward and reverse motor. Detailed Implementation

[0021] 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.

[0022] Example: Figures 1-11 As shown, the present invention provides a technical solution for a large-diameter pipeline transportation device, including a fixed frame 1. Two winches 2 are installed at the bottom of the fixed frame 1. Each winch 2 has a fixed plate 3 at its bottom. A support plate 4 is installed on one side of the bottom of each fixed plate 3. A bracket 5 is fixedly connected to one end of the support plate 4. A fixed sleeve 6 is fixedly connected to the bottom of the bracket 5. A support sleeve 7 is fixedly connected to one side of the fixed sleeve 6. A rotating shaft 8 is rotatably connected inside the support sleeve 7. Multiple fixed cylinders 9 are fixedly connected to the outside of the support sleeve 7. Rotating sleeves 10 are rotatably connected inside each of the multiple fixed cylinders 9. Threaded rods 11 are installed inside each rotating sleeve 10. Limiting plates 18 are integrally formed on both sides of the rotating sleeve 10. Limiting grooves 17 are formed on both sides of each fixed cylinder 9. The two limiting plates 18 slide respectively. Connected to and adapted to the two limiting grooves 17, the limiting grooves 17 on both sides of the threaded rod 11 are limited and guided by the two limiting plates 18. The top of the fixed cylinder 9 is fixedly connected to the threaded sleeve 12. The threaded rod 11 passes through the threaded sleeve 12 and is threadedly connected to the threaded sleeve 12. The top of the threaded rod 11 is rotatably connected to the rotating frame 13. The two sides of the rotating frame 13 are fixedly connected to the support plate 15. The two support plates 15 are rotatably connected to the rotating rod 16. The two rotating rods 16 are fixedly connected to the outer side of the two rotating rods 16. The bottom of the multiple rotating sleeves 10 is fixedly connected to the rotating shaft 19. The multiple rotating shafts 19 pass through the bottom wall of the multiple fixed cylinders 9 and are rotatably connected to the multiple fixed cylinders 9. The bottom of the multiple rotating shafts 19 is fixedly connected to the first bevel gear 20.

[0023] A second bevel gear 21 is fixedly connected to the outside of the rotating shaft 8. Multiple first bevel gears 20 are meshed with the second bevel gear 21. A forward and reverse motor 42 is fixedly connected inside the fixed sleeve 6. The output end of the forward and reverse motor 42 passes through the support sleeve 7 and is rotatably connected to the support sleeve 7. The output end of the forward and reverse motor 42 is fixedly connected to the rotating shaft 8, so that the forward and reverse motor 42 starts to drive the rotating shaft 8 to rotate, and drives the second bevel gear 21 to rotate, thereby driving the multiple first bevel gears 20 to rotate.

[0024] Both sides of the threaded sleeve 12 are integrally formed with side plates 25. The bottom of each side plate 25 is fixedly connected with a limit sleeve 22. The inside of each limit sleeve 22 is slidably connected with a slide rod 23. The top of each slide rod 23 is fixedly connected to the bottom of the rotating frame 13. A spring 24 is sleeved on the outside of each slide rod 23. The two ends of the spring 24 are fixedly connected to the side plate 25 and the rotating frame 13 respectively, so as to support the support plate 15 and improve stability.

[0025] A bidirectional lead screw 37 is rotatably connected inside the fixed frame 1. Moving seats 36 are slidably connected to both sides of the fixed frame 1. The threads at both ends of the bidirectional lead screw 37 are set in opposite directions. The two moving seats 36 are threaded to both ends of the bidirectional lead screw 37. A motor is installed at one end inside the fixed frame 1, and the bidirectional lead screw 37 is fixedly connected to the motor output end, causing the bidirectional lead screw 37 to rotate and drive the two moving seats 36 to move relative to each other. Two winches 2 are respectively installed at the bottom of the two moving seats 36. Steel cables are sleeved and wound on the outside of each winch 2. The bottom ends of the two steel cables are fixedly connected to two fixed plates 3. The moving seats 36 are activated to wind and unwind the steel cables, thereby driving the fixed plates 3 to rise and fall. Cables 35 are fixedly connected to both sides of the bottom of the two fixed plates 3. Rotating blocks 34 are fixedly connected to the bottom ends of the two cables 35. Support plates 4 and brackets 5 are located on both sides of their tops. Each support plate 4 and bracket 5 is fixedly connected to a lifting block 33. Two rotating blocks 34 are hinged to the two lifting blocks 33 respectively, so that the rotating blocks 34 support the lifting blocks 33 and drive the support plate 4 and bracket 5 to rise and fall. The top of the support plate 4 is fixedly connected to a support block 26. The two sides of the support block 26 are hinged to upper hinge plates 30. The two upper hinge plates 30 are fixedly connected to one side of each hydraulic cylinder 29. The output ends of the two hydraulic cylinders 29 are fixedly connected to lower hinge plates 31. The bottom of the support plate 4 is fixedly connected to a base plate 27. The two sides of the base plate 27 are hinged to grippers 28. The top of the two grippers 28 is fixedly connected to a push plate 32. The two lower hinge plates 31 are hinged to the two push plates 32 respectively, so that the hydraulic cylinders 29 are activated to drive the lower hinge plates 31 to move, and the lower hinge plates 31 drive the push plates 32 to move, thereby deflecting the grippers 28 on both sides to facilitate gripping and releasing the pipeline.

[0026] The fixed frame 1 has vertical plates 38 fixedly connected to both ends. Each of the two vertical plates 38 has a base 40 on one side. Each of the two bases 40 has a connecting seat 39 fixedly connected to the top. The bases 40 and the connecting seats 39 are respectively hinged to the upper and lower ends of the vertical plates 38. Both sides of the two bases 40 are rotatably connected to traveling wheels 41.

[0027] In this scheme, two locomotives are connected to the connecting seats 39 at both ends, allowing the two locomotives to move back and forth inside the tunnel for easy pipeline transport. The lifting position is fixed, i.e., a temporary site is set up and the work area is demarcated. The pipeline is moved to the bottom of the fixed frame 1, and the supports 5 at both ends are placed on either side of the pipeline. The motor is started, driving the moving seats 36 on both sides to move, which in turn moves the winch 2 relative to each other. This moves the fixed plate 3, the cable 35, and the rotating block 34, causing the rotating block 34 to move the lifting block 33, which in turn moves the two supports 5 relative to each other. The two supports 5 then move the fixed sleeve 6 and the support sleeve 7, thereby moving multiple fixed cylinders 9 into the pipeline. The forward and reverse motors 42 are started, causing the rotating shaft 8 to rotate. When the rotating sleeve 10 rotates, it drives the second bevel gear 21 to rotate. The rotation of the second bevel gear 21 drives multiple first bevel gears 20 to rotate, causing the multiple first bevel gears 20 to... When rotating, the rotating shaft 19 rotates, and when multiple rotating shafts 19 rotate, multiple rotating sleeves 10 rotate synchronously. When the rotating sleeve 10 rotates, it limits the limiting groove 17 through the limiting plates 18 on both sides inside, thereby driving the threaded rod 11 to rotate synchronously and limiting the threaded sleeve 12 to limit the threaded rod 11, so that the threaded rod 11 can rise or fall when rotating. The threaded rod 11 drives the rotating frame 13 and the support wheels 14 on both sides to rise. Through the contact of multiple support wheels 14 with the inner wall of the pipe, the inner wall of the pipe is supported, thereby fixing the pipe and facilitating transportation. It can provide multi-point uniform support from the inside of the pipe, adapt to large-diameter pipes with different inner diameters, effectively prevent the pipe from sliding or moving during transportation, and improve transportation safety and stability. The outer wall clamping structure and the inner support wheels 14 work together to realize the simultaneous force fixation of the inner and outer walls of the pipe, significantly enhancing the anti-overturning and anti-swaying ability of the pipe during transportation in the tunnel, especially suitable for long-distance transportation under steep slopes or complex road conditions.

[0028] The connection seats 39 on both sides are activated, causing the push plate 32 to move and the clamps 28 on both sides to move towards the center, clamping and fixing the outer wall of the pipe. This provides simultaneous support for the inner and outer walls of the pipe, improving its stability during transport within the tunnel. After the pipe is lifted 100mm, an inspection is conducted to confirm the longitudinal and transverse slopes of the transport route and the structural bearing capacity. Obstacles are removed, and temporary supports are set up at the designated unloading location where the pipe is placed.

[0029] By setting side plates 25, limiting sleeves 22, sliding rods 23 and springs 24 on both sides of the threaded sleeve 12, when the threaded rod 11 drives the rotating frame 13 to rise and fall, the sliding rod 23 slides in the limiting sleeve 22, and the spring 24 provides buffering and restoring force, effectively absorbing the impact vibration generated when the support wheel 14 contacts the inner wall of the pipe, avoiding rigid contact damage to the inner wall of the pipe, and ensuring that the lifting process of the support wheel 14 is smooth and the centering is accurate, thereby improving the reliability of equipment operation and the protection performance of the pipeline.

[0030] By configuring a fixed frame 1, a winch 2, a fixed plate 3, a movable seat 36, a double-acting screw 37, a cable 35, a rotating block 34, and a lifting block 33, the motor drives the double-acting screw 37 to rotate, causing the movable seats 36 on both sides to move relative to each other. This adjusts the lateral distance between the winch 2 and the fixed plate 3, adapting to the lifting requirements of pipes of different lengths. Simultaneously, the winch 2 uses the cable winding and unwinding to raise and lower the support plate 4 and the bracket 5, facilitating pipe lifting and positioning, and improving the equipment's adaptability to different pipe specifications and different work sites.

[0031] By incorporating a vertical plate 38, a connecting seat 39, a base 40, and wheels 41, the two ends of the fixed frame 1 can be quickly connected to an external vehicle head via the connecting seat 39, enabling dual-head traction and facilitating bidirectional movement and turning around in narrow spaces such as tunnels or culverts. The wheels 41 rotate flexibly, and combined with the hinged structure between the base 40 and the vertical plate 38, they can adapt to slight swaying caused by uneven ground, improving the transport equipment's passability and operational efficiency in complex terrain within tunnels.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A large-diameter pipeline transportation device, comprising a fixing frame (1), characterized in that: The fixed frame (1) has two winches (2) at its bottom. Each winch (2) has a fixed plate (3) at its bottom. A support plate (4) is provided on one side of the bottom of each fixed plate (3). A bracket (5) is fixedly connected to one end of the support plate (4). A fixed sleeve (6) is fixedly connected to the bottom end of the bracket (5). A support sleeve (7) is fixedly connected to one side of the fixed sleeve (6). A rotating shaft (8) is rotatably connected inside the support sleeve (7). Multiple fixed cylinders (9) are fixedly connected to the outside of the support sleeve (7). The multiple fixed cylinders (9) are internally... All are rotatably connected to a rotating sleeve (10), and a threaded rod (11) is provided inside the rotating sleeve (10). A threaded sleeve (12) is fixedly connected to the top of the inside of the fixed cylinder (9). The threaded rod (11) passes through the threaded sleeve (12) and is threadedly connected to the threaded sleeve (12). A rotating frame (13) is rotatably connected to the top of the threaded rod (11). Support plates (15) are fixedly connected to both sides of the rotating frame (13). Rotating rods (16) are rotatably connected inside the two support plates (15). Support wheels (14) are fixedly connected to the outside of the two rotating rods (16).

2. The large-diameter pipeline transportation equipment according to claim 1, characterized in that: The rotating sleeve (10) has integrally formed limit plates (18) on both sides, and the fixed cylinder (9) has limit grooves (17) on both sides. The two limit plates (18) are slidably connected to the two limit grooves (17) and are adapted to the two limit grooves (17).

3. The large-diameter pipeline transportation equipment according to claim 1, characterized in that: Each of the multiple rotating sleeves (10) has a rotating shaft (19) fixedly connected to its bottom end. Each of the multiple rotating shafts (19) passes through the bottom wall of the multiple fixed cylinders (9) and is rotatably connected to the multiple fixed cylinders (9). Each of the multiple rotating shafts (19) has a first bevel gear (20) fixedly connected to its bottom end.

4. The large-diameter pipeline transportation equipment according to claim 3, characterized in that: A second bevel gear (21) is fixedly connected to the outside of the rotating shaft (8). Multiple first bevel gears (20) are meshed with the second bevel gear (21). A forward and reverse motor (42) is fixedly connected inside the fixed sleeve (6). The output end of the forward and reverse motor (42) passes through the support sleeve (7) and is rotatably connected to the support sleeve (7). The output end of the forward and reverse motor (42) is fixedly connected to the rotating shaft (8).

5. A large-diameter pipeline transportation equipment according to claim 1, characterized in that: Both sides of the threaded sleeve (12) are integrally formed with side plates (25). The bottom of the two side plates (25) is fixedly connected with limit sleeves (22). The two limit sleeves (22) are slidably connected with slide rods (23). The top of the two slide rods (23) is fixedly connected to the bottom of the rotating frame (13). The outer side of the two slide rods (23) is fitted with springs (24). The two ends of the springs (24) are fixedly connected to the side plates (25) and the rotating frame (13) respectively.

6. The large-diameter pipeline transportation equipment according to claim 1, characterized in that: The fixed frame (1) is rotatably connected to a bidirectional lead screw (37). The fixed frame (1) is slidably connected to two movable seats (36) on both sides. The threads at both ends of the bidirectional lead screw (37) are set to opposite directions. The two movable seats (36) are respectively threaded to both ends of the bidirectional lead screw (37). A motor is installed at one end of the fixed frame (1). The bidirectional lead screw (37) is fixedly connected to the output end of the motor.

7. A large-diameter pipeline transportation equipment according to claim 1, characterized in that: The two winches (2) are respectively installed at the bottom of the two movable seats (36). Steel cables are wrapped around the outside of the two winches (2), and the bottom ends of the two steel cables are respectively fixedly connected to the two fixed plates (3).

8. A large-diameter pipeline transportation equipment according to claim 1, characterized in that: Both of the two fixed plates (3) are fixedly connected to the bottom sides of the two fixed plates (3), and both of the two fixed plates (35) are fixedly connected to the bottom ends of the two fixed plates (35). Both of the top sides of the support plate (4) and the bracket (5) are fixedly connected to the lifting blocks (33), and the two rotating blocks (34) are respectively hinged to the two lifting blocks (33).

9. A large-diameter pipeline transportation equipment according to claim 1, characterized in that: The support plate (4) is fixedly connected to the top of the support block (26), and the support block (26) is hinged to both sides of the upper hinge plate (30). The two upper hinge plates (30) are fixedly connected to one side of the hydraulic cylinder (29), and the output ends of the two hydraulic cylinders (29) are fixedly connected to the lower hinge plate (31). The support plate (4) is fixedly connected to the bottom of the support plate (4), and the bottom plate (27) is hinged to both sides of the bottom plate (27). The two grippers (28) are fixedly connected to the top of the two grippers (28), and the two lower hinge plates (31) are respectively hinged to the two push plates (32).

10. A large-diameter pipeline transportation equipment according to claim 1, characterized in that: The fixed frame (1) has vertical plates (38) fixedly connected to both ends. Each of the two vertical plates (38) has a base (40) on one side. Each of the two bases (40) has a connecting seat (39) fixedly connected to the top. The base (40) and the connecting seat (39) are respectively hinged to the upper and lower ends of the vertical plate (38). Each of the two bases (40) has a rotatable wheel (41) connected to both sides.

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