Pipeline construction equipment in tunnel and pipeline construction method in tunnel

Abstract

The invention discloses in-tunnel pipeline construction equipment and an in-tunnel pipeline construction method, and particularly relates to the field of pipeline construction equipment.The equipment comprises two sets of walking mechanisms, each walking mechanism comprises a supporting frame, rolling wheels are rotationally arranged on the supporting frames, and the rolling wheels are used for making contact with the inner wall of a tunnel to limit the positions of the supporting frames in the tunnel; the rollers roll on the inner wall of the tunnel to enable the walking mechanism to move in the tunnel; and a bending mechanism is arranged between the two walking mechanisms. Through the design of the walking mechanism and the sectional type walking mechanism, the walking mechanism can automatically penetrate through the bent tunnel, the workload of workers is reduced, in the bent tunnel, a welding gun can automatically weld a pipeline, it can be guaranteed that the distance between the output end of the welding gun and the pipeline is always the same in the welding process, and the welding efficiency is improved. And the welding position and angle of the pipeline cannot be changed, the consistency of welding quality is improved, and the overall strength and sealing performance of the pipeline are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline construction equipment, and more specifically, to a pipeline construction equipment in a tunnel and a pipeline construction method in a tunnel. Background Art

[0002] The long-distance pipeline project refers to the construction and operation of a pipeline system project for transporting fluid substances such as petroleum and natural gas over a long distance, with a large transportation volume, and continuously and stably. Due to the complex mountainous terrain and large undulations, it is difficult to lay pipelines on the ground. Therefore, in the construction of long-distance pipeline projects, mountain tunnels have become necessary passageways, and pipelines need to be laid in the tunnels to avoid complex terrains and geological disasters and ensure the stable transportation of liquids. To ensure the pipeline's sealing and continuity, and at the same time adapt to the spatial geology and changes in the tunnel and facilitate subsequent maintenance and replacement, different sections of pipelines need to be transported into the tunnel and then welded. The forms of long-distance pipeline tunnels are diverse and mainly can be divided into different types such as straight, curved, and broken-line types.

[0003] In the prior art, first, fixing frames are laid in the tunnel, and then the pipelines are installed on the fixing frames to isolate the pipelines from the bottom of the tunnel, which can provide a space for the pipelines to expand and contract due to thermal expansion and cold contraction. At the same time, it can also prevent the pipelines from being affected by moisture and corrosion and avoid water accumulation soaking the pipelines. When different sections of pipelines are all installed in the tunnel, pipeline construction equipment is used to weld the joints of different pipelines. To facilitate the transfer of construction equipment in the tunnel, moving components are installed on the construction equipment, and the moving components can drive the construction equipment to move along the inner wall of the tunnel.

[0004] However, to adapt to the complex mountainous terrain and geological conditions, avoid geological defect areas, and at the same time optimize the layout of the water and oil transportation lines, there are curved sections in long-distance pipeline tunnels, and pipelines need to be welded in the curved sections of the tunnel. The existing pipeline construction equipment can only pass through straight tunnels and cannot automatically turn in curved tunnels, relying highly on manual operation, resulting in reduced construction efficiency. And because in the curved sections of the tunnel, the welding positions and angles of the pipelines will constantly change, manual welding cannot ensure the consistency of welding quality, affecting the overall strength and sealing performance of the pipelines. Summary of the Invention

[0005] The present invention provides a pipeline construction equipment in a tunnel and a pipeline construction method in a tunnel, and the problem to be solved is that the existing pipeline construction equipment in a tunnel can only pass through straight tunnels and cannot automatically turn in curved tunnels, relying highly on manual operation, resulting in reduced construction efficiency. And because in the curved sections of the tunnel, the welding positions and angles of the pipelines will constantly change, manual welding cannot ensure the consistency of welding quality, affecting the overall strength and sealing performance of the pipelines.

[0006] To achieve the above object, the present invention provides the following technical solution: A pipeline construction device in a tunnel, comprising two sets of traveling mechanisms. Each traveling mechanism includes a support frame, on which a roller is rotatably arranged. The roller is used to contact the inner wall of the tunnel to limit the position of the support frame in the tunnel, and the traveling mechanism moves in the tunnel by rolling the roller on the inner wall of the tunnel. A bending mechanism is arranged between the two traveling mechanisms. The bending mechanism includes a rotating seat, which is fixedly arranged on one of the two support frames, and rotatably arranged on the other support frame. The rotating seat changes the angle between the two support frames by rotation. A winding mechanism is arranged on the traveling mechanism. The winding mechanism includes a fixed seat, on which a C-shaped ring is arranged. The pipeline workpiece is located inside the C-shaped ring, and the C-shaped ring is concentric with the pipeline workpiece. A welding torch is arranged on the C-shaped ring, and the output end of the welding torch faces the pipeline workpiece. During welding, the welding torch is turned on, and the welding torch is driven to make a circular motion along the outer surface of the pipeline workpiece to complete the welding.

[0007] In a preferred embodiment, the winding mechanism further includes a plurality of transmission wheels. The fixed seat is fixedly arranged on the support frame, the transmission wheels are rotatably arranged on the fixed seat, and the same transmission belt is drivingly connected to the plurality of transmission wheels. A plurality of guide wheels are also rotatably arranged on the fixed seat, the C-shaped ring is in rolling contact with the guide wheels, and the transmission belt is drivingly connected to the C-shaped ring.

[0008] In a preferred embodiment, a linear driver I is fixedly arranged on the C-shaped ring, and the welding torch is arranged on the output end of the linear driver I. The movement of the output end of the linear driver I is used to adjust the distance between the output end of the welding torch and the pipeline workpiece.

[0009] In a preferred embodiment, a spacing adjustment mechanism is arranged on the output end of the linear driver I. The spacing adjustment mechanism includes a limit seat, which is fixedly arranged on the output end of the linear driver I. An adjustment seat is slidably arranged in the limit seat. A fixed rod is fixedly arranged at the bottom of the adjustment seat, and the bottom end of the fixed rod is used to contact the surface of the pipeline workpiece. The welding torch is fixedly arranged on the adjustment seat, and an elastic member is fixedly arranged between the limit seat and the adjustment seat.

[0010] In a preferred embodiment, the traveling mechanism includes a first rotating rod, which is rotatably arranged on the support frame. The roller is rotatably arranged on the first rotating rod. A moving seat is slidably arranged on the support frame, and an auxiliary seat is articulated on the moving seat. The auxiliary seat is articulated with the first rotating rod.

[0011] In a preferred embodiment, a threaded rod is rotatably arranged on the support frame, and the moving seat is threadedly connected to the threaded rod. The position of the moving seat on the support frame is adjusted by rotating the threaded rod.

[0012] In a preferred embodiment, the bending mechanism further includes a first gear. A connecting shaft is fixedly arranged on the rotating seat, and the first gear is fixedly arranged on the connecting shaft. The connecting shaft is rotatably arranged between the support frames, and a second gear is rotatably arranged on the support frame. The first gear meshes with the second gear.

[0013] In a preferred embodiment, anti-slip protrusions are arranged on the outer surface of the transmission belt. The anti-slip protrusions are used to contact the outer side of the C-shaped ring to increase the friction between the transmission belt and the C-shaped ring.

[0014] In a preferred embodiment, a first rotating driver is fixedly arranged on the first rotating rod, and the output end of the first rotating driver is fixedly arranged with the roller. The rotation of the output end of the first rotating driver is used to drive the roller to rotate.

[0015] A construction method for a pipeline construction device in a tunnel includes the following steps: Step 1: Move the traveling mechanism into the tunnel. The pipeline workpiece is located inside the support frame, so that the rollers are in close contact with the inner wall of the tunnel. Then start the first rotating driver, and the rotation of the output end of the first rotating driver drives the rollers to rotate. The rotation of the rollers drives the support frame to move along the inner wall of the tunnel. Step 2: When there is a bend in the tunnel, the first gear meshes with the second gear to drive the rotating seat to rotate relative to the support frame, so that one of the two support frames first enters the turn of the tunnel. As the support frame continues to move, the position of the support frame in the tunnel is adjusted. Step 3: Start the first linear driver and adjust the distance between the output end of the first linear driver and the pipeline workpiece. Step 4: Start the welding torch, and then make the C-shaped ring move in a circular motion along the pipeline workpiece. When the welding torch rotates around the pipeline workpiece for one week, the welding between the two pipeline workpieces is completed.

[0016] The beneficial effects of the present invention are as follows: 1. By setting the traveling mechanism, the design of the segmented traveling mechanism enables the traveling mechanism to automatically pass through the curved tunnel, reducing the workload of the staff. And in the curved tunnel, the welding torch can automatically weld the pipeline, and during welding, it can ensure that the distance between the output end of the welding torch and the pipeline is always the same, and the welding position and angle of the pipeline will not change, improving the consistency of the welding quality and enhancing the overall strength and sealing performance of the pipeline.

[0017] 2. By setting the spacing adjustment mechanism, when welding the elliptical pipeline workpiece, the welding torch rotates around the elliptical pipeline workpiece for one week. The position of the welding torch is adjusted by the contact between the fixed rod and the surface of the elliptical pipeline workpiece, so that the distance between the output end of the welding torch and the elliptical pipeline workpiece is always the same, further improving the welding quality of the elliptical pipeline workpiece. Description of the Drawings

[0018] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0019] Figure 2 It is a schematic three-dimensional structure diagram of the present invention.

[0020] Figure 3 It is a schematic three-dimensional structure diagram of the C-shaped ring of the present invention.

[0021] Figure 4 It is a schematic front view structure diagram of the rotating seat of the present invention.

[0022] Figure 5 It is a schematic diagram of the moving track of the support frame of the present invention turning in the bending tunnel.

[0023] Figure 6 It is a schematic front view structure diagram of the C-shaped ring of the present invention.

[0024] Figure 7 It is a schematic front view structure diagram of the elastic member of the present invention.

[0025] Figure 8 It is a schematic diagram of the moving track of the fixing rod of the present invention moving along the pipeline workpiece.

[0026] Figure 9 It is a schematic flow diagram of the pipeline construction method in the tunnel of the present invention.

[0027] Reference numerals are: 1, traveling mechanism; 11, support frame; 12, first rotating rod; 13, threaded rod; 14, moving seat; 15, roller; 2, bending mechanism; 21, rotating seat; 22, first gear; 23, second gear; 3, winding mechanism; 31, fixed seat; 32, driving wheel; 33, transmission belt; 34, C-shaped ring; 35, first linear driver; 4, welding torch; 5, spacing adjustment mechanism; 51, limiting seat; 52, adjusting seat; 53, fixing rod; 54, elastic member; 6, pipeline workpiece. Detailed implementation manners

[0028] The following further describes the present application in detail with reference to the drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0029] Referring to the attached drawings of the specification Figures 1 to 6 , a pipeline construction device in a tunnel includes two groups of traveling mechanisms 1. The traveling mechanism 1 includes a support frame 11. A roller 15 is rotatably provided on the support frame 11. The roller 15 is used to contact the inner wall of the tunnel to limit the position of the support frame 11 in the tunnel. The traveling mechanism 1 moves in the tunnel by rolling the roller 15 on the inner wall of the tunnel; A bending mechanism 2 is arranged between two traveling mechanisms 1. The bending mechanism 2 includes a rotating seat 21. The rotating seat 21 is fixedly arranged with one of the two support frames 11, and the rotating seat 21 is rotatably arranged with the other support frame 11. The rotating seat 21 changes the angle between the two support frames 11 through rotation, so that the support frame 11 can automatically enter the curved part of the tunnel. A winding mechanism 3 is arranged on the traveling mechanism 1. The winding mechanism 3 includes a fixed seat 31. A C-shaped ring 34 is arranged on the fixed seat 31. The pipeline workpiece 6 is located inside the C-shaped ring 34. The C-shaped ring 34 is concentric with the pipeline workpiece 6. A welding torch 4 is arranged on the C-shaped ring 34. The output end of the welding torch 4 faces the pipeline workpiece 6. During welding, the welding torch 4 is turned on, and the welding torch 4 is driven to move in a circular motion along the outer surface of the pipeline workpiece 6 to complete welding.

[0030] The traveling mechanism 1 includes a first rotating rod 12. The first rotating rod 12 is rotatably arranged on the support frame 11. A roller 15 is rotatably arranged on the first rotating rod 12. A moving seat 14 is slidably arranged on the support frame 11. An auxiliary seat is hinged on the moving seat 14, and the auxiliary seat is hinged with the first rotating rod 12. A threaded rod 13 is rotatably arranged on the support frame 11. The moving seat 14 is threadedly connected with the threaded rod 13. The threaded rod 13 adjusts the position of the moving seat 14 on the support frame 11 through rotation. A first rotating driver is fixedly arranged on the first rotating rod 12. The output end of the first rotating driver is fixedly arranged with the roller 15. The rotation of the output end of the first rotating driver is used to drive the roller 15 to rotate.

[0031] The bending mechanism 2 further includes a first gear 22. A connecting shaft is fixedly arranged on the rotating seat 21. The first gear 22 is fixedly arranged on the connecting shaft. The connecting shaft is rotatably arranged between the support frame 11. A second gear 23 is rotatably arranged on the support frame 11. The first gear 22 meshes with the second gear 23.

[0032] It should be noted that the support members such as the support frame 11 are made of lightweight metal. The lightweight metal not only facilitates the movement of the support frame 11 into the tunnel and reduces the difficulty of transporting the support frame 11, but also can reduce the burden on the rotating seat 21. The connection relationship between the rotating seat 21 and the support frame 11 in the figure is only for reference. The size of the rotating seat 21 changes according to the size of the support frame 11, that is, the rotation of the rotating seat 21 can stably drive the movement of the support frame 11. If the size of the support frame 11 is large, multiple rotating seats 21 can be set. When setting multiple rotating seats 21, the position between the end of the rotating seat 21 and the front support frame 11 needs to be considered. Or when setting multiple rotating seats 21, the support frames 11 in both traveling mechanisms 1 are rotatably arranged with the rotating seat 21. The rotating seat 21 supports the support frame 11 under force, and the support scheme of the rotating seat 21 is optimized as a mature existing technology and will not be elaborated here too much.

[0033] It should also be noted that the first rotation drive is set as a motor, and the output shaft of the motor is fixedly arranged with the roller 15. A plurality of rollers 15 are rotatably arranged on each first rotation rod 12, and the plurality of rollers 15 on the corresponding first rotation rod 12 are horizontally arranged. That is, with the arrangement of the plurality of rollers 15 on the first rotation rod 12, when the roller 15 contacts the inner wall of the tunnel, the roller 15 can increase the force in the horizontal direction between the support frame 11 and the inner wall of the tunnel. A hydraulic cylinder is also fixedly arranged on the support frame 11, and a positioning seat is fixedly arranged at the output end of the hydraulic cylinder. After the roller 15 contacts the inner wall of the tunnel, the hydraulic cylinder is started, and the output end of the hydraulic cylinder drives the positioning seat to contact the inner wall of the tunnel. The positioning seat is also used to increase the force in the horizontal direction between the support frame 11 and the inner wall of the tunnel, so as to prevent the support frame 11 from tipping over in the tunnel. A motor is fixedly arranged on the support frame 11, and the output shaft of the motor is fixedly arranged with the roller 15. A motor is also fixedly arranged on the support frame 11, and the output shaft of the motor is fixedly arranged with the second gear 23. The rotation of the output shaft of the motor drives the second gear 23 to rotate.

[0034] Further, referring to Figure 5 , since there are two sets of support frames 11, the support frames 11 move rightward in the tunnel, that is, the support frame 11 on the side moving forward along the length direction of the tunnel is the front side, and the other support frame 11 is the support frame 11 located at the rear side. The pipe workpiece 6 is the workpiece to be laid in the tunnel. After a plurality of pipe workpieces 6 are moved into the tunnel, the pipe workpieces 6 are assembled together, and then the contact parts of different pipe workpieces 6 are welded to form a complete pipe. A fixing frame is installed in the tunnel, and the pipe workpiece 6 is installed on the fixing frame.

[0035] The specific implementation scenario is as follows: After the pipe workpiece 6 is laid in the tunnel, the traveling mechanism 1 is moved into the tunnel. The rotation of the output shaft of the motor drives the threaded rod 13 to rotate. The rotation of the threaded rod 13 pushes the moving seat 14 to move. The movement of the moving seat 14 drives the first rotation rod 12 to rotate. The rotation of the first rotation rod 12 adjusts the distance between the roller 15 and the support frame 11, that is, the roller 15 is expanded outside the support frame 11. At this time, under the action of the contact and limitation between the plurality of rollers 15 and the inner wall of the tunnel, the support frame 11 is stably installed in the tunnel. The pipe workpiece 6 is located in the middle of the support frame 11. When the support frame 11 is located in a straight tunnel, the first rotation drive is started, and the rotation of the output shaft of the first rotation drive drives the roller 15 to rotate. The rolling contact between the roller 15 and the inner wall of the tunnel realizes the effect of driving the support frame 11 to move along the inner wall of the tunnel in the straight tunnel. After the welding torch 4 moves to the specified position, the contact part between the two pipe workpieces 6 is located below the output end of the welding torch 4. After driving the welding torch 4 to wind around the pipe workpiece 6 for one week, the welding between the adjacent two pipe workpieces 6 can be completed. Referring to Figure 5When the pipe workpiece 6 located in the curved tunnel needs to be welded and the support frame 11 needs to be moved to the bend in the tunnel, first start the motor on the front support frame 11 to drive the threaded rod 13 to rotate, that is, drive the rollers 15 on the front support frame 11 to contract, release the positioning between the front support frame 11 and the inner wall of the tunnel. At this time, the rotating seat 21 is used to support the front support frame 11. Then start the motor to drive the second gear 23 to rotate. The second gear 23 meshes with the first gear 22 to drive the rotating seat 21 to rotate, thereby achieving the effect of adjusting the angle between the rotating seat 21 and the support frame 11 located at the rear. The support frame 11 located at the front is fixedly arranged with the rotating seat 21. When the rotating seat 21 rotates, it synchronously drives the support frame 11 located at the front to rotate. The arrangement of multiple rollers 15 on the first rotating rod 12 can prevent the support frame 11 from tipping over in the tunnel. The support frame 11 located at the rear continues to move, so that the support frame 11 located at the front moves into the curved tunnel. After the support frame 11 located at the front is completely in the curved tunnel, drive the threaded rod 13 to rotate again, so that the rollers 15 on the front support frame 11 expand and contact with the inner wall of the curved tunnel. Start the hydraulic cylinder on the front support frame 11 to make the positioning seat contact with the inner wall of the curved tunnel, so that the support frame 11 located at the front is fixed in the tunnel. Use the welding torch 4 to rotate around the pipe workpiece 6 for one week to weld the pipe workpiece 6 in the curved tunnel, which can ensure that the distance between the welding torch 4 and the pipe workpiece 6 is always the same, ensuring the welding quality. When the support frame 11 needs to pass through the curved tunnel after welding, make the rollers 15 on the rear support frame 11 contract to release the positioning with the inner wall of the straight tunnel, and make the support frame 11 located at the front continue to move along the inner wall of the curved tunnel. Then adjust the angle of the support frame 11 located at the rear through the meshing of the first gear 22 and the second gear 23. Continuing like this can make the two traveling mechanisms 1 automatically pass through the curved tunnel.

[0036] Compared with the prior art, the design of the segmented traveling mechanism 1 enables the traveling mechanism 1 to automatically pass through the curved tunnel, reducing the workload of the staff. And in the curved tunnel, it can make the welding torch 4 automatically weld the pipe. During welding, it can ensure that the distance between the output end of the welding torch and the pipe is always the same, and the welding position and angle of the pipe will not change, improving the consistency of the welding quality and enhancing the overall strength and sealing performance of the pipe.

[0037] Refer to the attached drawings of the specification Figures 2 to 6, in order to be able to drive the welding torch 4 to rotate stably along the outer side of the pipe workpiece 6, thereby improving the stability of welding. Specifically, the winding mechanism 3 further includes a plurality of transmission wheels 32. The fixed seat 31 is fixedly arranged on the support frame 11. The transmission wheels 32 are rotatably arranged on the fixed seat 31. The same transmission belt 33 is drivingly connected on the plurality of transmission wheels 32. A plurality of guide wheels are also rotatably arranged on the fixed seat 31. The C-shaped ring 34 is in rolling contact with the guide wheels. The transmission belt 33 is drivingly connected with the C-shaped ring 34. A linear driver 35 is fixedly arranged on the C-shaped ring 34. The welding torch 4 is arranged at the output end of the linear driver 35. The movement of the output end of the linear driver 35 is used to adjust the distance between the output end of the welding torch 4 and the pipe workpiece 6. Anti-slip protrusions are arranged on the outer surface of the transmission belt 33, and the anti-slip protrusions are used to contact the outer side of the C-shaped ring 34 to increase the friction between the transmission belt 33 and the C-shaped ring 34.

[0038] It should be noted that a motor is fixedly arranged on the fixed seat 31, and the output shaft of the motor is fixedly arranged with the fixed seat 31. The plurality of transmission wheels 32 and the guide wheels are circumferentially distributed, and the C-shaped ring 34 is located between the plurality of transmission wheels 32 and the guide wheels. The linear driver 35 is set as a linear motor, and the linear motor is fixedly arranged on the C-shaped ring 34.

[0039] It should also be noted that the welding torch 4 is arranged on the linear driver 35, and the output end of the welding torch 4 is always arranged towards the center of the circle of the pipe workpiece 6.

[0040] In this embodiment, the motor is started. The rotation of the output shaft of the motor drives the transmission wheels 32 to rotate. The transmission wheels 32 drive the transmission belt 33. The transmission belt 33 can drive the plurality of transmission wheels 32 to rotate synchronously. And during the process of the transmission belt 33 being driven, it contacts the outer side of the C-shaped ring 34 to drive the C-shaped ring 34 to rotate. During the rotation of the C-shaped ring 34, it drives the welding torch 4 to make a circular motion around the pipe workpiece 6. The C-shaped ring 34 can ensure that the distance between the pipe workpiece 6 and the output end of the welding torch 4 is always the same, thereby ensuring the welding quality.

[0041] Refer to the attached drawings of the specification Figure 7 and Figure 8, in a long-distance pipeline project, when the pipeline in the tunnel is used to transport fluid substances such as oil and natural gas, in order to reduce the liquid flow and air flow resistance, the pipeline workpiece 6 needs to have a certain ovality, that is, the pipeline workpiece 6 is set as an oval pipeline. When the fluid flow direction is consistent with the long axis direction of the oval pipeline workpiece 6, the long axis direction of the oval pipeline workpiece 6 provides a larger cross-sectional area, thereby reducing the fluid flow rate and reducing the friction between the fluid and the pipeline wall surface of the oval pipeline workpiece 6, and further reducing the frictional resistance along the way. At the same time, the short axis direction of the oval pipeline workpiece 6 is arc-shaped, which can more naturally adapt to the bending path when the pipeline workpiece 6 bends, reducing the centrifugal force and impact force received by the fluid at the bending point, thereby reducing the local resistance. However, when welding the oval pipeline workpiece 6, since the oval has a long axis and a short axis, when the output end of the welding torch 4 makes a circular motion around the welding torch 4, the distance between the welding torch 4 and the surface of the oval pipeline workpiece 6 is different, resulting in uneven input of welding heat. When the distance is close, local overheating is likely to cause weld bead biting, burn-through and stress concentration, reducing the weld strength and causing cracks; when the distance is far, insufficient heat causes poor weld fusion, poor forming, and inclusion and non-fusion defects, affecting the welding quality and performance. In order to avoid the above situation, specifically, a spacing adjustment mechanism 5 is provided on the output end of the linear actuator 35. The spacing adjustment mechanism 5 includes a limit seat 51, the limit seat 51 is fixedly arranged on the output end of the linear actuator 35, an adjustment seat 52 is slidably arranged in the limit seat 51, a fixed rod 53 is fixedly arranged at the bottom of the adjustment seat 52, and the bottom end of the fixed rod 53 is used to contact the surface of the pipeline workpiece 6. The welding torch 4 is fixedly arranged on the adjustment seat 52, and an elastic member 54 is fixedly arranged between the limit seat 51 and the adjustment seat 52.

[0042] It should be noted that the elastic member 54 is set as a spring. The top end of the spring is fixedly arranged with the limit seat 51, and the bottom end of the spring is fixedly arranged with the adjustment seat 52. A connecting seat is also fixedly arranged in the limit seat 51. The connecting seat is located below the adjustment seat 52, and the connecting seat is used to support the adjustment seat 52 at the bottom of the adjustment seat 52.

[0043] It should also be noted that when the linear drive 35 is started, the moving drive limit seat 51 at the output end of the linear drive 35 moves. After the bottom end of the fixed rod 53 contacts the elliptical pipe workpiece 6, the elastic member 54 is compressed, driving the C-shaped ring 34 to move in a circular motion along the elliptical pipe workpiece 6. The fixed rod 53 always contacts the surface of the elliptical pipe workpiece 6. When the contact position between the fixed rod 53 and the elliptical pipe workpiece 6 changes from the minor axis to the major axis, the outer surface of the elliptical pipe workpiece 6 will squeeze the fixed rod 53 to make the adjusting seat 52 slide within the limit seat 51. The movement of the adjusting seat 52 changes the distance of the output end of the welding torch 4, thereby realizing the adjustment of the distance between the output end of the welding torch 4 and the surface of the elliptical pipe workpiece 6. When the welding torch 4 moves in a circular motion around the pipe workpiece 6, the distance between the output end of the welding torch 4 and the elliptical pipe workpiece 6 is always the same. When the contact position between the fixed rod 53 and the elliptical pipe workpiece 6 changes from the major axis to the minor axis, the elastic force of the elastic member 54 drives the adjusting seat 52 to move, thereby ensuring that the distance between the output end of the welding torch 4 and the elliptical pipe workpiece 6 is always the same.

[0044] Refer to the attached drawings of the specification Figure 9 , a method for constructing a pipeline in a tunnel of a pipeline construction device in a tunnel, comprising the following steps: Step 1: Move the traveling mechanism 1 into the tunnel. The pipe workpiece 6 is located within the support frame 11, making the rollers 15 closely fit the inner wall of the tunnel. Then start the first rotational drive. The rotation of the output end of the first rotational drive drives the rollers 15 to rotate, and the rotation of the rollers 15 drives the support frame 11 to move along the inner wall of the tunnel; Step 2: When there is a bend in the tunnel, the first gear 22 meshes with the second gear 23 to drive the rotating seat 21 to rotate relative to the support frame 11, causing one of the two support frames 11 to enter the turn of the tunnel first. As the support frame 11 continues to move, the position of the support frame 11 in the tunnel is adjusted; Step 3: Start the first linear drive 35 and adjust the distance between the output end of the first linear drive 35 and the pipe workpiece 6; Step 4: Start the welding torch 4, and then make the C-shaped ring 34 move in a circular motion along the pipe workpiece 6. After the welding torch 4 rotates around the pipe workpiece 6 for one week, the welding between the two pipe workpieces 6 is completed.

[0045] The above embodiments only illustrate several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A tunnel internal pipeline construction device, characterized in that, It includes two sets of traveling mechanisms (1), and the traveling mechanism (1) includes a support frame (11). A roller (15) is rotatably arranged on the support frame (11). The roller (15) is used to contact the inner wall of the tunnel to limit the position of the support frame (11) in the tunnel. The roller (15) rolls on the inner wall of the tunnel to move the traveling mechanism (1) in the tunnel. A bending mechanism (2) is arranged between the two traveling mechanisms (1). The bending mechanism (2) includes a rotating seat (21). The rotating seat (21) is fixedly arranged with one of the two support frames (11), and the rotating seat (21) is rotatably arranged with the other support frame (11). The rotating seat (21) changes the angle between the two support frames (11) by rotating. A winding mechanism (3) is arranged on the traveling mechanism (1). The winding mechanism (3) includes a fixed seat (31). A C-shaped ring (34) is arranged on the fixed seat (31). A pipe workpiece (6) is located inside the C-shaped ring (34). The C-shaped ring (34) is concentric with the pipe workpiece (6). A welding torch (4) is arranged on the C-shaped ring (34). The output end of the welding torch (4) is arranged towards the pipe workpiece (6). During welding, the welding torch (4) is turned on, and the welding torch (4) is driven to move in a circular motion along the outer surface of the pipe workpiece (6) to complete welding.

2. The tunnel internal pipeline construction equipment according to claim 1, characterized in that: The winding mechanism (3) further includes a plurality of transmission wheels (32). The fixed seat (31) is fixedly arranged on the support frame (11). The transmission wheels (32) are rotatably arranged on the fixed seat (31). The same transmission belt (33) is drivingly connected to the plurality of transmission wheels (32). A plurality of guide wheels are also rotatably arranged on the fixed seat (31). The C-shaped ring (34) is in rolling contact with the guide wheels. The transmission belt (33) is drivingly connected to the C-shaped ring (34).

3. The tunnel internal pipeline construction equipment according to claim 2, characterized in that: A linear actuator one (35) is fixedly arranged on the C-shaped ring (34). The welding torch (4) is arranged on the output end of the linear actuator one (35). The movement of the output end of the linear actuator one (35) is used to adjust the distance between the output end of the welding torch (4) and the pipe workpiece (6).

4. The tunnel internal pipeline construction equipment according to claim 3, characterized in that: A spacing adjusting mechanism (5) is arranged on the output end of the linear actuator one (35). The spacing adjusting mechanism (5) includes a limiting seat (51). The limiting seat (51) is fixedly arranged on the output end of the linear actuator one (35). An adjusting seat (52) is slidably arranged in the limiting seat (51). A fixing rod (53) is fixedly arranged at the bottom of the adjusting seat (52). The bottom end of the fixing rod (53) is used to contact the surface of the pipe workpiece (6). The welding torch (4) is fixedly arranged on the adjusting seat (52). An elastic member (54) is fixedly arranged between the limiting seat (51) and the adjusting seat (52).

5. The tunnel internal pipeline construction equipment according to claim 4, characterized in that: The walking mechanism (1) includes a first rotating rod (12), the first rotating rod (12) is rotatably arranged on the support frame (11), the roller (15) is rotatably arranged on the first rotating rod (12), a moving seat (14) is slidably arranged on the support frame (11), an auxiliary seat is hinged on the moving seat (14), and the auxiliary seat is hinged with the first rotating rod (12).

6. The tunnel internal pipeline construction equipment according to claim 5, characterized in that: A threaded rod (13) is rotatably arranged on the support frame (11), the moving seat (14) is threadedly connected with the threaded rod (13), and the position of the moving seat (14) on the support frame (11) is adjusted by rotating the threaded rod (13).

7. The tunneling pipeline construction equipment according to claim 6, characterized in that: The bending mechanism (2) further includes a first gear (22), a connecting shaft is fixedly arranged on the rotating seat (21), the first gear (22) is fixedly arranged on the connecting shaft, the connecting shaft is rotatably arranged between the support frame (11), a second gear (23) is rotatably arranged on the support frame (11), and the first gear (22) meshes with the second gear (23).

8. The tunnel internal pipeline construction equipment according to claim 7, characterized in that: Anti-slip protrusions are arranged on the outer surface of the transmission belt (33), and the anti-slip protrusions are used to contact the outer side of the C-shaped ring (34) to increase the friction between the transmission belt (33) and the C-shaped ring (34).

9. The tunnel internal pipeline construction equipment according to claim 8, characterized in that: A first rotation driver is fixedly arranged on the first rotating rod (12), the output end of the first rotation driver is fixedly arranged with the roller (15), and the rotation of the output end of the first rotation driver is used to drive the roller (15) to rotate.

10. A construction method of the tunnel internal pipeline construction equipment as described in claim 9, characterized in that, It includes the following steps: Step 1: Move the walking mechanism (1) into the tunnel, the pipe workpiece (6) is located inside the support frame (11), make the roller (15) closely fit with the inner wall of the tunnel, then start the first rotation driver, and the rotation of the output end of the first rotation driver drives the roller (15) to rotate, and the rotation of the roller (15) drives the support frame (11) to move along the inner wall of the tunnel; Step 2: When there is a bend in the tunnel, the first gear (22) meshes with the second gear (23) to drive the rotating seat (21) to rotate with respect to the support frame (11), so that one of the two support frames (11) first enters the turn of the tunnel, and as the support frame (11) continues to move, the position of the support frame (11) in the tunnel is adjusted; Step 3: Start the first linear driver (35) and adjust the distance between the output end of the first linear driver (35) and the pipe workpiece (6); Step 4: Start the welding torch (4), then make the C-shaped ring (34) move in a circular motion along the pipe workpiece (6), and when the welding torch (4) rotates around the pipe workpiece (6) for one week, the welding between the two pipe workpieces (6) is completed.

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