Movable welding platform for natural gas pipeline

Abstract

The utility model relates to the technical field of pipeline welding, and discloses a natural gas pipeline movable type welding platform which comprises a base, a rotary table is rotatably connected to the upper side wall of the base, a lifting box is fixedly connected to the upper side wall of the rotary table, and a threaded pin is rotatably connected to the interior of the lifting box. The upper side wall of the lifting box is fixedly connected with a driving motor, the output end of the driving motor penetrates through the side wall of the lifting box and is fixedly connected with the upper end of a threaded pin, and the rod wall of the threaded pin is sleeved with a threaded sleeve in a threaded mode. According to the pipeline clamping device, when a pipeline is clamped in a threaded connection mode, the placing stability of the threaded rod and the threaded cylinder can be guaranteed, the problem that in the lifting process of the pipeline, the threaded rod or the threaded cylinder is loosened, and the clamping stability of the pipeline is affected is solved, after the pipeline is clamped, the pipeline can be conveniently moved, and the practicability is high. And the convenience of pipeline welding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a mobile welding platform for natural gas pipelines. Background Art

[0002] Natural gas pipelines are pipelines that transport natural gas, including associated gas produced by oil fields, from mining sites or processing plants to urban gas distribution centers or industrial enterprise users. They are also called gas transmission pipelines. Using natural gas pipelines to transport natural gas is the only way to transport a large amount of natural gas on land. Natural gas pipelines account for about half of the total length of pipelines in the world. In the construction of such a large number of pipelines, welding platforms are needed.

[0003] A mobile welding platform for natural gas pipelines proposed in patent number CN210677597U includes a base, four groups of support columns are symmetrically fixedly installed on the front, back, left and right corners of the bottom side of the base, two groups of hinged ends are fixedly installed in the middle of the front and back ends of the bottom side of the base, and the two groups of hinged ends are symmetrically hinged to connect frames, the lower end of the connecting frame is rotatably connected with an axle, two groups of rollers are fixedly installed on the left and right ends of the axle, and the middle ends of the left and right sides of the two groups of connecting frames are hinged with connecting rods. The utility model provides a mobile welding platform for natural gas pipelines, which can drive the lead screw to rotate by manually turning a hand wheel, so that the lead screw drives a clamp arranged at one end to move left and right in the frame, so that in the process of welding the natural gas pipeline, the pipeline clamping device can clamp and fix natural gas pipelines of different sizes, which is convenient for the staff to weld the pipeline.

[0004] When the existing welding platform is in use, the pipe is clamped by a threaded connection. In the process of clamping and lifting the pipe by the threaded connection, the threaded rod or the threaded barrel lacks a relatively fixed structure, so the threaded barrel is prone to rotation, affecting the stability of pipe clamping. Utility Model Content

[0005] The utility model aims to solve the problem that in the prior art, when a welding platform is used, a pipeline is clamped by a threaded connection. In the process of clamping and lifting the pipeline by the threaded connection, the threaded rod or the threaded barrel lacks a relatively fixed structure, so that the threaded barrel is prone to rotate, affecting the stability of pipeline clamping. A mobile welding platform for natural gas pipeline is proposed to solve the problem that

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A natural gas pipeline mobile welding platform comprises a base, the upper side wall of the base is rotatably connected to a turntable, the upper side wall of the turntable is fixedly connected to a lifting box, the lifting box is internally rotatably connected to a threaded pin, the upper side wall of the lifting box is fixedly connected to a driving motor, the output end of the driving motor passes through the side wall of the lifting box and is fixedly connected to the upper end of the threaded pin, the rod wall sleeve of the threaded pin is provided with a threaded sleeve, the front side wall of the threaded sleeve is fixedly connected to a bent rod, the front end of the bent rod extends out of the lifting box and is fixedly connected to a lifting plate, the upper side wall of the lifting plate is symmetrically fixedly connected to two placement frames, the front and rear side walls of the placement frame are both rotatably connected to a threaded cylinder, the threaded cylinder is rotatably connected to a threaded rod, the opposite ends of the two threaded rods located on the same placement frame (8) are fixedly connected to a clamping plate, and the side wall of the placement frame is fixed by a positioning component and a threaded rod.

[0008] Preferably, the positioning assembly includes a support frame fixedly connected to the outer wall of the placement frame, the side wall of the support frame is rotatably connected to a rotating rod, the outer walls of the rotating rod and the threaded cylinder are fixedly sleeved with gear rings, the two gear rings on the same side are outerly provided with the same toothed belt, the end of the rotating rod away from the gear ring extends out of the support frame and is fixedly connected to a rotating cylinder by a spring, the inner wall of the rotating cylinder is fixedly connected to two sliding blocks, the rod wall of the rotating rod is provided with a sliding groove matching the sliding block, the rotating cylinder is fixedly connected to two limit pins close to the side wall of the support frame, and the side wall of the support frame is provided with a plurality of limit grooves matching the limit pins.

[0009] Preferably, the lower end of the turntable extends out of the base and is fixedly connected to a first gear, the lower side wall of the base is fixedly connected to a control motor, and the output end of the control motor is fixedly connected to a second gear meshing with the first gear.

[0010] Preferably, a support box is fixedly connected to the four corners of the lower side wall of the base, a hydraulic cylinder is fixedly connected to the upper inner wall of the support box, a wheel plate is fixedly connected to the output end of the hydraulic cylinder, and the left and right sides of the wheel plate extend out of the support box and are fixedly connected to support wheels.

[0011] Preferably, a plurality of balls are fixedly connected to the lower side wall of the turntable.

[0012] Preferably, a rotating plate is fixedly connected to the side wall of the rotating drum.

[0013] Compared with the prior art, the utility model provides a mobile welding platform for natural gas pipelines, which has the following beneficial effects:

[0014] 1. The mobile welding platform for natural gas pipelines, through the threaded barrel, threaded rod, clamping plate, support frame, rotating rod, gear ring, toothed belt, rotating barrel, sliding block and limit pin, can ensure the stability of the placement of the threaded rod and the threaded barrel when clamping the pipeline through threaded connection, and avoid the problem of loosening of the threaded rod or the threaded barrel during the pipeline lifting process, which affects the stability of pipeline clamping.

[0015] 2. The mobile welding platform for natural gas pipelines, through the support box, hydraulic cylinder, wheel plate and support wheels, can conveniently move the pipeline after clamping it, thereby improving the convenience of pipeline welding.

[0016] Moreover, the parts not involved in the device are the same as the prior art or can be implemented by the prior art. The utility model can ensure the stability of the placement of the threaded rod and the threaded barrel when clamping the pipeline by means of threaded connection, avoid the problem of loosening of the threaded rod or the threaded barrel during the pipeline lifting process, and affect the stability of pipeline clamping. After the pipeline is clamped, it is convenient to move the pipeline, thereby improving the convenience of pipeline welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a mobile welding platform for natural gas pipelines proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of a lifting box in a mobile welding platform for natural gas pipelines proposed by the utility model;

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of part A.

[0020] In the figure: 1. base; 2. turntable; 3. lifting box; 4. threaded pin; 5. drive motor; 6. threaded sleeve; 7. lifting plate; 8. placement frame; 9. threaded cylinder; 10. threaded rod; 11. clamping plate; 12. support frame; 13. rotating rod; 14. gear ring; 15. toothed belt; 16. rotating cylinder; 17. sliding block; 18. limit pin; 19. first gear; 20. control motor; 21. second gear; 22. support box; 23. hydraulic cylinder; 24. wheel plate; 25. support wheel; 26. ball bearing; 27. rotating plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-3A mobile welding platform for natural gas pipelines comprises a base 1, the upper side wall of the base 1 is rotatably connected with a turntable 2, the upper side wall of the turntable 2 is fixedly connected with a lifting box 3, the interior of the lifting box 3 is rotatably connected with a threaded pin 4, the upper side wall of the lifting box 3 is fixedly connected with a driving motor 5, the output end of the driving motor 5 passes through the side wall of the lifting box 3 and is fixedly connected to the upper end of the threaded pin 4, the rod wall sleeve of the threaded pin 4 is provided with a threaded sleeve 6, the front side wall of the threaded sleeve 6 is fixedly connected with a bent rod, the front end of the bent rod extends out of the lifting box 3 and is fixedly connected with a lifting plate 7, the upper side wall of the lifting plate 7 is symmetrically fixedly connected with two placing frames 8, the front and rear side walls of the placing frame 8 are both rotatably connected with a threaded cylinder 9, a threaded rod 10 is rotatably connected in the threaded cylinder 9, the opposite ends of the two threaded rods 10 on the same side are fixedly connected with a clamping plate 11, and the side wall of the placing frame 8 is fixed by a positioning component and the threaded rod 10.

[0023] The positioning assembly includes a support frame 12 fixedly connected to the outer wall of the placement frame 8, and the side wall of the support frame 12 is rotatably connected with a rotating rod 13. The outer walls of the rotating rod 13 and the threaded tube 9 are fixedly sleeved with a gear ring 14, and the two gear rings 14 on the same side are outerly provided with the same toothed belt 15. The end of the rotating rod 13 away from the gear ring 14 extends out of the support frame 12 and is fixedly connected to a rotating cylinder 16 through a spring. The inner wall of the rotating cylinder 16 is fixedly connected with two sliding blocks 17. The rod wall of the rotating rod 13 is provided with a sliding groove that matches the sliding block 17. The rotating cylinder 16 is fixedly connected with two limit pins 18 near the side wall of the support frame 12. The side wall of the support frame 12 is provided with a plurality of limit grooves that match the limit pins 18 to avoid the threaded rod or threaded tube from loosening during the pipeline lifting process, thereby affecting the stability of pipeline clamping.

[0024] The lower end of the turntable 2 extends out of the base 1 and is fixedly connected to a first gear 19. The lower side wall of the base 1 is fixedly connected to a control motor 20. The output end of the control motor 20 is fixedly connected to a second gear 21 that meshes with the first gear 19, so that the placement angle of the pipeline can be adjusted.

[0025] A support box 22 is fixedly connected to the four corners of the lower side wall of the base 1, a hydraulic cylinder 23 is fixedly connected to the upper inner wall of the support box 22, a wheel plate 24 is fixedly connected to the output end of the hydraulic cylinder 23, the left and right sides of the wheel plate 24 extend out of the support box 22 and are fixedly connected to support wheels 25, which can facilitate the movement of the pipeline after clamping it, thereby improving the convenience of pipeline welding.

[0026] A plurality of balls 26 are fixedly connected to the lower side wall of the turntable 2 , thereby improving the support strength of the turntable 2 .

[0027] A rotating plate 27 is fixedly connected to the side wall of the rotating drum 16 , which improves the convenience of rotating the rotating drum 16 .

[0028] In the utility model, when in use, the pipe is placed in the placement frame 8, and then the operator pulls the rotating drums 16 on the left and right sides, so that the rotating drum 16 drives the limiting pins 18 to disengage from the limiting grooves on the surface of the support frame 12, and then rotates the rotating drum 16. When the rotating drum 16 drives the sliding block 17 to rotate axially, the sliding block 17 will abut against the groove wall of the sliding groove on the surface of the rotating rod 13, so that the rotating rod 13 rotates, and the lower gear ring 14 is driven to rotate through the threaded cooperation. Through the mutual cooperation of the lower gear ring 14 and the toothed belt 15, the upper gear ring 14 and the threaded drum 9 are driven to rotate, and the threaded rod 1 is driven through the threaded cooperation. 0 moves, so that the threaded rod 10 drives the clamping plate 11 to move towards the direction close to the pipeline, and the clamping plate 11 is used to clamp the pipeline. After clamping, the rotating drum 16 is released. Under the tension of the spring, the rotating drum 16 drives the limit pin 18 to be inserted into the limit groove to fix the position of the threaded barrel 9 to ensure the stability of the placement of the threaded barrel 9. Then, the driving motor 5 is controlled by the external control switch to make the driving motor 5 drive the threaded pin 4 to rotate, and the threaded sleeve 6 is driven to move through the threaded cooperation, and the lifting plate 7 and the pipeline are driven to move upward to a suitable position for welding through the threaded sleeve 6.

Claims

1. A mobile welding platform for natural gas pipelines, comprising a base (1), characterized in that: The upper side wall of the base (1) is rotatably connected to a turntable (2), the upper side wall of the turntable (2) is fixedly connected to a lifting box (3), the interior of the lifting box (3) is rotatably connected to a threaded pin (4), the upper side wall of the lifting box (3) is fixedly connected to a driving motor (5), the output end of the driving motor (5) passes through the side wall of the lifting box (3) and is fixedly connected to the upper end of the threaded pin (4), the rod wall of the threaded pin (4) is sleeved with a threaded sleeve (6), the front side wall of the threaded sleeve (6) is fixedly connected to a bent rod, The front end of the bent rod extends out of the lifting box (3) and is fixedly connected to a lifting plate (7); the upper side wall of the lifting plate (7) is symmetrically fixedly connected to two placement frames (8); the front and rear side walls of the placement frame (8) are rotatably connected to a threaded cylinder (9); a threaded rod (10) is rotatably connected inside the threaded cylinder (9); the two threaded rods (10) located on the same placement frame (8) are fixedly connected to a clamping plate (11) at opposite ends; the side walls of the placement frame (8) are fixed by a positioning assembly and the threaded rod (10).

2. A natural gas pipeline mobile welding platform according to claim 1, characterized in that: The positioning assembly comprises a support frame (12) fixedly connected to the outer wall of the placement frame (8); a rotating rod (13) is rotatably connected to the side wall of the support frame (12); the rotating rod (13) and the outer wall of the threaded cylinder (9) are both fixedly sleeved with a gear ring (14); the outer sleeves of the two gear rings (14) located on the same side are provided with the same toothed belt (15); the end of the rotating rod (13) away from the gear ring (14) extends out of the support frame (12) and is fixedly connected to a rotating cylinder (16) through a spring; the inner wall of the rotating cylinder (16) is fixedly connected with two sliding blocks (17); the rod wall of the rotating rod (13) is provided with a sliding groove matching the sliding block (17); the rotating cylinder (16) is fixedly connected with two limit pins (18) close to the side wall of the support frame (12); the side wall of the support frame (12) is provided with a plurality of limit slots matching the limit pins (18).

3. The mobile welding platform for natural gas pipelines according to claim 1, characterized in that: The lower end of the turntable (2) extends out of the base (1) and is fixedly connected to a first gear (19); the lower side wall of the base (1) is fixedly connected to a control motor (20); and the output end of the control motor (20) is fixedly connected to a second gear (21) that meshes with the first gear (19).

4. A natural gas pipeline mobile welding platform according to claim 1, characterized in that: The four corners of the lower side wall of the base (1) are fixedly connected to a support box (22), the upper inner wall of the support box (22) is fixedly connected to a hydraulic cylinder (23), the output end of the hydraulic cylinder (23) is fixedly connected to a wheel plate (24), and the left and right sides of the wheel plate (24) both extend out of the support box (22) and are fixedly connected to support wheels (25).

5. The mobile welding platform for natural gas pipelines according to claim 1 is characterized in that: A plurality of rolling balls (26) are fixedly connected to the lower side wall of the turntable (2).

6. A natural gas pipeline mobile welding platform according to claim 2, characterized in that: A rotating plate (27) is fixedly connected to the side wall of the rotating drum (16).

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