Lifting device for pipeline installation construction

Abstract

The invention discloses a lifting device for pipeline installation construction, and belongs to the technical field of prefabricated pipeline installation construction. The lifting device for pipeline installation and construction comprises a moving frame, a sliding groove is formed in the moving frame, two lifting assemblies are symmetrically arranged at the two ends of the sliding groove, each lifting assembly comprises a sliding block, a lifting assembly and a lifting assembly, the sliding blocks are arranged in the sliding grooves in a sliding mode, inclined planes are arranged on the sliding blocks, and the upper ends and the lower ends of the inclined planes are each connected with a horizontal table top; the lifting rod is arranged in a vertical sliding hole formed in the moving frame in a sliding mode, and the lower end of the lifting rod abuts against the inclined face or the two horizontal table faces; the lifting device for pipeline installation construction is provided with a horizontal beam, and the two ends of the horizontal beam are in sliding connection with transverse sliding holes formed in lifting rods correspondingly. According to the lifting device for pipeline installation and construction, only the lifting device for pipeline installation and construction needs to be moved to a construction site, a pipe body is erected above a horizontal beam, and the pipeline installation and construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated pipeline installation construction, and in particular to a lifting device used for pipeline installation construction. Background Art

[0002] Traditional pipeline installation and construction often have problems such as low efficiency and great safety hazards. For example, assembling pipelines at heights not only has low efficiency, but also cannot guarantee construction quality and safety. Therefore, the innovation of construction technology has become an inevitable trend. The application of lifting devices is a manifestation of the innovation of construction technology. It can avoid cross-construction operations at heights, ensure the quality and progress of construction, and greatly reduce the possibility of workers working at heights, reducing safety hazards.

[0003] In traditional construction methods, pipelines are cut and processed at the construction site. In order to improve construction efficiency and shorten the construction period, a construction method has emerged in which pipelines are prefabricated in a processing workshop and then transported to the construction site for assembly. This eliminates the need to process pipelines at the construction site, which can effectively improve construction efficiency. However, when assembling pipelines at the construction site, the pipelines need to be lifted to a certain height. If a crane is used for lifting, the installation of the crane is time-consuming and occupies a large amount of ground space. In addition, the crane has high requirements for the ground, is inconvenient to install, and is troublesome to disassemble, resulting in low efficiency in pipeline installation and construction. Summary of the invention

[0004] The purpose of the present invention is to overcome the problems in the prior art. The lifting device provided for pipeline installation and construction occupies a small area, does not require the laying of mobile tracks on site, and does not require assembly. It only needs to move the lifting device for pipeline installation and construction to the construction site and erect the pipe body above the horizontal beam, thereby speeding up the installation and construction efficiency of the pipeline.

[0005] The present invention provides a lifting device for pipeline installation construction, including a moving frame, the moving frame is provided with a slide groove, and two lifting components are symmetrically arranged at both ends of the slide groove, and the lifting components include: a sliding block, which is slidably arranged in the slide groove, and the sliding block has an inclined surface, and the upper end and the lower end of the inclined surface are both connected to a horizontal surface; a lifting rod, which is slidably arranged in a vertical sliding hole provided on the moving frame, and the lower end of the lifting rod abuts the inclined surface or two horizontal surfaces; the lifting device for pipeline installation construction has a horizontal beam, and the two ends of the horizontal beam are respectively slidably connected to the transverse sliding holes provided on the lifting rod, and the middle part of the horizontal beam is used for erecting a pipe body, and the two sliding blocks are close to or away from each other to realize that the lifting rod drives the horizontal beam and the pipe body to rise or fall synchronously.

[0006] Preferably, a connecting rod is fixedly connected to the middle part of the lifting rod, the connecting rod is parallel to the length direction of the tube body, and the two ends of the connecting rod are symmetrical with each other about the lifting rod, and the ends of the connecting rod are fixedly connected to a vertical rod, and the transverse sliding hole is arranged on the connecting rod. The vertical rods on the same side of the two lifting components are a group, and the two transverse sliding holes on each group of vertical rods are slidably connected to the two ends of a horizontal beam, and the two horizontal beams are used to stabilize the lifting tube body.

[0007] Preferably, a spring is sleeved on the lifting rod, one end of the spring is connected to the surface of the lifting rod, and the other end is connected to the movable frame. The lower end of the lifting rod is rotatably connected to a roller, and the wheel surface of the roller abuts against an inclined surface or a horizontal surface.

[0008] Preferably, a double-headed motor is fixedly provided on the movable frame, and screws are fixedly connected to both ends of the double-headed motor. The rotation directions of the two screws are opposite. Threaded holes are provided on the slider, and each screw cooperates with one of the threaded holes to control the rotation of the double-headed motor, so as to realize the two sliders approaching or moving away from each other.

[0009] Preferably, two limit members are provided on the horizontal beam, and both ends of each limit member are slidably connected to the two horizontal beams. The limit member has a notch, and the side of the notch is slidably connected to the vertical track on the movable frame. The surface of the limit member close to the tube body is provided with a balloon to increase friction.

[0010] Preferably, the side of the slider has a vertical slide groove, an upper slide plate and a lower slide plate are slidably arranged in the vertical slide groove, the upper slide plate and the lower slide plate are fixedly connected by a stud with a flat thread, the stud is meshed with a gear, the gear is fixedly connected to the output shaft of the drive motor, the drive motor is fixed in the slider, the upper slide plate or the lower slide plate is fixedly connected to a support plate, the support plate extends to a horizontal surface near the upper end of the slider, and controlling the forward and reverse rotation of the drive motor can raise or lower the height of the lifting rod.

[0011] Preferably, the vertical slide groove passes through two opposite side surfaces of the slider, the upper slide plate or the lower slide plate is fixedly connected to a vertical slide rod, the upper end of the vertical slide rod is fixedly connected to one of the support plates, and a return spring is provided on the upper surface of the upper slide plate, and the two ends of the return spring are respectively connected to the upper surface of the upper slide plate and the top inner wall of the vertical slide groove.

[0012] Preferably, both sides of the sliding block have a limiting slide groove and a receiving slide groove, the limiting slide groove is located at the top of the receiving slide groove, and the vertical slide rod is slidably arranged in the limiting slide groove, and the support plate is slidably arranged in the receiving slide groove.

[0013] Preferably, the support plate is an arc-shaped plate with an opening facing upward, the arc-shaped plate is used to support and limit the roller, and the contour of the accommodating slide groove is adapted to the contour of the arc-shaped plate.

[0014] Preferably, the ends of the two screw rods are fixedly connected with baffles, and the surfaces of the two baffles close to each other are slidably connected to the surface of the movable frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The pipe body is set up in the middle of the horizontal beam, and then the two sliders are moved synchronously so that the two sliders are close to each other. The inclined surfaces on each slider push the lifting rod to slide upward, and the two lifting rods slide upward synchronously to increase the height of the horizontal beam, further achieving the purpose of lifting the pipe body on the horizontal beam. The lifting device used for pipeline installation construction occupies a small area, does not need to lay mobile tracks on site, and does not need to be assembled. It only needs to move the lifting device used for pipeline installation construction to the construction site and set up the pipe body above the horizontal beam, which speeds up the installation and construction efficiency of the pipeline; The accommodating slide groove is an arc-shaped notch opening upward, and the vertical cross-section of the arc-shaped notch is semicircular. The inner wall of the arc-shaped notch is used to abut against the outer wall of the arc-shaped plate and limit the lowest position of the movement of the arc-shaped plate. The arc-shaped plate can better adapt to the wheel surface of the roller, and can prevent the roller from rolling in the arc-shaped plate, thereby ensuring the stability of the roller position and making it easier for the roller to switch between the inner section of the arc-shaped plate and the horizontal platform surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention; Figure 2 for Figure 1 Sectional view at AA in the middle; Figure 3 for Figure 1 The main view; Figure 4 for Figure 1 Sectional view at the middle BB; Figure 5 It is a schematic diagram of the connection between the connecting rod and the vertical rod in the present invention; Figure 6 is a schematic diagram of a limiting member of the present invention; Figure 7 is a schematic diagram of a mobile rack of the present invention; Figure 8 for Figure 4 A partial enlarged view of point C in the middle; Fig. 9 for Figure 2 A partial enlarged view of point D in the middle; Fig.10It is a schematic diagram of the connection between the vertical sliding rod and the supporting plate of the present invention; Fig.11 A schematic diagram of a slider of the present invention; Fig.12 is a cross-sectional view of a slider of the present invention; Fig.13 It is a first modeling schematic diagram of the present invention; Fig.14 This is a second modeling schematic diagram of the present invention.

[0017] Description of reference numerals: 1. Mobile frame, 2. Slide, 3. Slider, 4. Lifting rod, 5. Horizontal beam, 6. Tube, 7. Connecting rod, 8. Vertical rod, 9. Spring, 10. Roller, 11. Double-head motor, 12. Limiting piece, 13. Notch, 14. Vertical track, 15. Ball bag, 16. Vertical slide, 17. Upper slide, 18. Lower slide, 19. Stud, 20. Gear, 21. Support plate, 22. Vertical slide, 23. Limiting slide, 24. Accommodating slide, 25. Return spring, 26. Baffle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. "Include" or "comprises" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Inside", "outside", "upper", "lower", "far", "near", "front", "back", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] The drawings in the present invention are not drawn strictly according to the actual scale, and the specific size and quantity of each structure can be determined according to actual needs. The drawings described in the present invention are only schematic diagrams of the structures.

[0021] The present invention provides a lifting device for pipeline installation construction. Figure 1-Figure 3 and Figure 13-14It includes a moving frame 1, which has a slide groove 2, and two lifting components are symmetrically arranged at both ends of the slide groove 2, and the lifting components include: a slider 3, which is slidably arranged in the slide groove 2, and the slider 3 has an inclined surface, and the upper and lower ends of the inclined surface are both connected to a horizontal surface; a lifting rod 4, which is slidably arranged in a vertical sliding hole provided on the moving frame 1, and the lower end of the lifting rod 4 abuts the inclined surface or two horizontal surfaces; the lifting device used for pipeline installation construction has a horizontal beam 5, and the two ends of the horizontal beam 5 are respectively slidably connected to the transverse sliding holes provided on the lifting rod 4, and the middle part of the horizontal beam 5 is used to set up a pipe body 6, and the two sliders 3 are close to or away from each other to realize that the lifting rod 4 drives the horizontal beam 5 and the pipe body 6 to rise or fall synchronously.

[0022] The angle between the inclined plane and the horizontal plane is in the range of 35°-55°, the thickness of the slider 3 is 8cm-14cm, the width of the horizontal plane is 12cm-16cm, and the length of the lifting rod 4 is 120cm-150cm; the pipe body 6 is set in the middle of the horizontal beam 5, and then the two sliders 3 are moved synchronously so that the two sliders 3 are close to each other, and the inclined planes on each slider 3 push the lifting rod 4 to slide upward, and the two lifting rods 4 slide upward synchronously to increase the height of the horizontal beam 5, and further achieve the purpose of lifting the pipe body 6 on the horizontal beam 5. The lifting device used for pipeline installation and construction occupies a small area, does not need to lay mobile tracks on site, and does not need to be assembled. It only needs to be moved to the construction site, and the pipe body 6 is set above the horizontal beam 5, which speeds up the installation and construction efficiency of the pipeline.

[0023] Among them, a moving wheel with a locking function is provided at the bottom of the moving frame 1, and this moving wheel can be purchased on the market. The moving frame 1 has fixedly set "┌"-shaped and "┐"-shaped limit plates, and the two limit plates are symmetrically arranged with each other, and the limit plates have a vertical part and a horizontal part, the vertical part is fixedly connected to the moving frame 1, the end of the horizontal part and the inclined surface of the slider 3 are both facing the lifting rod 4 on the same side, and the end of the horizontal part abuts against the outer upper end of the lifting rod 4, for supporting the rod body of the lifting rod 4.

[0024] In this embodiment, Figure 1-Figure 5 A connecting rod 7 is fixedly connected to the middle part of the lifting rod 4. The connecting rod 7 is parallel to the length direction of the tube body 6, and the two ends of the connecting rod 7 are symmetrical with each other about the lifting rod 4. The ends of the connecting rod 7 are fixedly connected to a vertical rod 8. The transverse sliding hole is arranged on the connecting rod 7. The vertical rods 8 on the same side of the two lifting components are a group. The two transverse sliding holes on each group of vertical rods 8 are slidably connected to the two ends of a horizontal beam 5. The two horizontal beams 5 are used to stabilize the lifting tube body 6.

[0025] After the lifting rod 4 rises, the two horizontal beams 5 can be lifted synchronously by driving the connecting rod 7 and the two vertical rods 8 at both ends of the connecting rod 7 to be lifted synchronously, so that the two horizontal beams 5 can be used to set up the two ends of the pipe body 6, thereby achieving the purpose of lifting the pipe body 6 more stably.

[0026] In this embodiment, Figure 1-Figure 3 The lifting rod 4 is sleeved with a spring 9, one end of the spring 9 is connected to the surface of the lifting rod 4, and the other end is connected to the moving frame 1. The lower end of the lifting rod 4 is rotatably connected to a roller 10, and the wheel surface of the roller 10 abuts against an inclined surface or a horizontal surface.

[0027] The diameter of the roller 10 is 10 cm, and the spring 9 is used to push the lifting rod 4 downward so that the lifting rod 4 remains stable during the up and down movement. The roller 10 can reduce the contact friction while allowing the lower end of the lifting rod 4 to smoothly transition between the inclined surface and the horizontal surface.

[0028] In this embodiment, Figure 2-Figure 3 A double-headed motor 11 is fixedly arranged on the movable frame 1, and screws are fixedly connected at both ends of the double-headed motor 11. The rotation directions of the two screws are opposite. Threaded holes are arranged on the slider 3, and each screw cooperates with one of the threaded holes to control the rotation of the double-headed motor 11, so as to realize the two sliders 3 approaching or moving away from each other.

[0029] The length of the screw is 0.6m-1.2m. By controlling the double-headed motor 11 to rotate forward or reverse, the two screws can synchronously drive the two sliders 3 to move closer to or away from each other.

[0030] In this embodiment, Figure 1-Figure 6 Two limit members 12 are provided on the horizontal beam 5, and both ends of each limit member 12 are slidably connected to the two horizontal beams 5. The limit member 12 has a notch 13, and the side of the notch 13 is slidably connected to the vertical track 14 on the mobile frame 1. The surface of the limit member 12 close to the tube body 6 is provided with a balloon 15 for increasing friction.

[0031] Among them, the vertical track 14 is composed of three sections, namely the ascending track, the platform and the connecting plate, the three of which form a "ґ" shape. The two platforms at relative positions in the two vertical tracks extend in the direction of the lifting rod 4 respectively, and are then fixedly connected to the upper movable frame 1 through the connecting plate on one side. The area at the upper end of the two vertical tracks 14 is expanded through two outwardly extending platforms, thereby reducing obstacles in the ascending process and expanding the operating space.

[0032] The vertical rail 14 can slide with the notch 13 to ensure that the two limit members 12 can only move up and down, avoiding the problem of lateral movement of the tube body 6. The balloon 15 is used to abut the surface of the tube body 6 to prevent the tube body 6 from further lateral movement between the two limit members 12. The balloon 15 can be a solid rubber balloon or an inflatable elastic balloon. The specific limit member 12 is a right-angle plate. Both right-angle plates have horizontal slide grooves. The horizontal slide grooves are slidably connected to the horizontal beam 5 to prevent the right-angle plate from detaching from the horizontal beam 5.

[0033] In this embodiment, Figure 1-Figure 12 The side of the slider 3 has a vertical slide groove 16, and an upper slide plate 17 and a lower slide plate 18 are slidably arranged in the vertical slide groove 16. The upper slide plate 17 and the lower slide plate 18 are fixedly connected by a stud 19 with a flat thread. The stud 19 is meshed with a gear 20, and the gear 20 is fixedly connected to the output shaft of the driving motor. The driving motor is fixed in the slider 3, and the upper slide plate 17 or the lower slide plate 18 is fixedly connected with a support plate 21. The support plate 21 extends to a horizontal surface near the upper end of the slider 3. Controlling the forward and reverse rotation of the driving motor can make the support plate 21 lift or lower the height of the lifting rod 4.

[0034] The upper slide plate 17 is disc-shaped, and the lower slide plate 18 is rectangular. The edge of the lower slide plate 18 is slidably connected to the inner wall of the vertical slide groove 16, which can prevent the stud 19 from rotating. By controlling the forward or reverse rotation of the driving motor, the gear 20 can be engaged with the stud 19 in a positive or reverse direction, and the stud 19 can further drive the support plate 21 to move up or down synchronously, which can further change the height of the lifting rod 4 and the tube body 6.

[0035] In this embodiment, Figure 8-Figure 12 The vertical slide groove 16 passes through the two opposite side surfaces of the slider 3, and the upper slide plate 17 or the lower slide plate 18 is fixedly connected with a vertical slide rod 22, and the upper end of the vertical slide rod 22 is fixedly connected with one of the support plates 21, and a return spring 25 is provided on the upper surface of the upper slide plate 17, and the two ends of the return spring 25 are respectively connected to the upper surface of the upper slide plate 17 and the top inner wall of the vertical slide groove 16.

[0036] The vertical slide bar 22 is connected to the support plate 21 so that the upper end surface of the support plate 21 is flush with the horizontal surface. At the same time, the return spring 25 can make the stud 19 more stable when moving upward and can drive the stud 19 to return downward.

[0037] In this embodiment, Figure 8-Figure 12 Both sides of the slider 3 have a limiting slide groove 23 and a receiving slide groove 24 , the limiting slide groove 23 is located at the top of the receiving slide groove 24 , and the vertical slide rod 22 is slidably arranged in the limiting slide groove 23 , and the support plate 21 is slidably arranged in the receiving slide groove 24 .

[0038] Both inner limit slide grooves 23 are provided with vertical slide bars 22, and each vertical slide bar 22 is fixedly connected to a support plate 21, which can not only increase the contact area between the support plate 21 and the lifting rod 4, but also prevent the support plate 21 from detaching from the lifting rod 4. The two vertical slide bars 22 can also restrict each other to prevent the upper slide plate 17 or the lower slide plate 18 from slipping out of the vertical slide groove 16, thereby ensuring the stable engagement of the stud 19 and the gear 20, making the power transmission more stable.

[0039] In this embodiment, Figure 10-11 The support plate 21 is an arc-shaped plate with an opening facing upward, and the arc-shaped plate is used to support and limit the roller 10 . The contour of the accommodating slide groove 24 is adapted to the contour of the arc-shaped plate.

[0040] The accommodating slide groove 24 is an arc-shaped notch opening upward, and the vertical cross-section of the arc-shaped notch is semicircular. The inner wall of the arc-shaped notch is used to abut against the outer wall of the arc plate and limit the lowest position of the movement of the arc plate. The arc plate can better adapt to the wheel surface of the roller 10, and can prevent the roller 10 from rolling in the arc plate, thereby ensuring the stability of the position of the roller 10, and at the same time it is easier for the roller 10 to switch between the inner section of the arc plate and the horizontal platform surface.

[0041] In this embodiment, Fig. 9 The ends of the two screw rods are fixedly connected with baffles 26 , and the surfaces of the two baffles 26 close to each other are slidably connected to the surface of the moving frame 1 .

[0042] The baffle 26 is a groove wheel, and the moving frame 1 has two sliding blocks arranged up and down. The two sliding blocks are respectively slidably arranged in the upper and lower grooves of the groove wheel, and the sliding blocks can limit the position of the groove wheel.

[0043] The two baffles 26 can offset the axial force on the screw, thereby preventing the axial force from acting on the motor shaft of the double-headed motor 11, thereby reducing the service life of the double-headed motor 11.

[0044] A method for using a lifting device for pipeline installation construction of the present invention is as follows: First, the mobile frame 1 is moved to the construction site, and the double-headed motor 11 is controlled to reverse, so that the two sliders 3 are separated from each other and are both located on a horizontal surface at the lower end of the inclined plane, so as to achieve reset; Then, the two ends of the pipe body 6 are respectively placed in the middle of the two horizontal beams 5, and the double-headed motor 11 is controlled to rotate forward to move the pipe body 6 from the horizontal surface at the lower end of the slope to the horizontal surface at the upper end of the slope, thereby initially raising the height of the pipe body 6; Next, the driving motors on the two sliders 3 are controlled to rotate synchronously forward, so that the support plate 21 further lifts the roller 10 and the lifting rod 4, thereby accurately raising the height of the tube body 6. The driving motor can be used to achieve fine-tuning control of the lifting height of the tube body 6; Finally, after the tube body 6 is installed, the above steps are reversed and the two sliders 3 are reset, and then the next tube body 6 can be installed using the same steps.

[0045] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lifting device for pipeline installation construction, comprising a mobile frame (1), characterized in that: The movable frame (1) is provided with a slide groove (2), and two lifting assemblies are symmetrically arranged at both ends of the slide groove (2), and the lifting assemblies include: A sliding block (3) is slidably disposed in the sliding groove (2), and the sliding block (3) has an inclined surface, and the upper end and the lower end of the inclined surface are both connected to a horizontal surface; A lifting rod (4) is slidably arranged in a vertical sliding hole provided on the movable frame (1), and the lower end of the lifting rod (4) abuts against the inclined surface or the two horizontal surfaces; The lifting device for pipeline installation construction comprises a horizontal beam (5), the two ends of the horizontal beam (5) are respectively slidably connected to the transverse sliding holes on the lifting rod (4), the middle part of the horizontal beam (5) is used to set up the pipe body (6), and the two sliding blocks (3) are moved closer to or farther away from each other so that the lifting rod (4) drives the horizontal beam (5) and the pipe body (6) to rise or fall synchronously.

2. A lifting device for pipeline installation construction as claimed in claim 1, characterized in that: A connecting rod (7) is fixedly connected to the middle of the lifting rod (4), the connecting rod (7) is parallel to the length direction of the tube body (6), and the two ends of the connecting rod (7) are symmetrical with each other about the lifting rod (4), and the ends of the connecting rod (7) are fixedly connected to a vertical rod (8), and the transverse sliding hole is arranged on the connecting rod (7). The vertical rods (8) on the same side of the two lifting components are a group, and the two transverse sliding holes on each group of vertical rods (8) are slidably connected to the two ends of a horizontal beam (5), and the two horizontal beams (5) are used to stabilize the lifting tube body (6).

3. A lifting device for pipeline installation construction as claimed in claim 1, characterized in that: The lifting rod (4) is sleeved with a spring (9), one end of the spring (9) is connected to the surface of the lifting rod (4), and the other end is connected to the moving frame (1); the lower end of the lifting rod (4) is rotatably connected to a roller (10), and the wheel surface of the roller (10) abuts against an inclined surface or a horizontal surface.

4. A lifting device for pipeline installation construction as claimed in claim 1, characterized in that: A double-headed motor (11) is fixedly arranged on the moving frame (1), and screws are fixedly connected to both ends of the double-headed motor (11), and the two screws rotate in opposite directions. The slider (3) is provided with a threaded hole, and each screw is respectively matched with one of the threaded holes to control the rotation of the double-headed motor (11), so as to realize that the two sliders (3) are close to each other or away from each other.

5. A lifting device for pipeline installation construction as claimed in claim 2, characterized in that: Two limiting members (12) are provided on the horizontal beam (5), and both ends of each limiting member (12) are slidably connected to the two horizontal beams (5). The limiting member (12) has a notch (13), and the side of the notch (13) is slidably connected to a vertical track (14) provided on the mobile frame (1). A balloon (15) for increasing friction is provided on the surface of the limiting member (12) close to the tube body (6).

6. A lifting device for pipeline installation construction as claimed in claim 3, characterized in that: The side of the slider (3) has a vertical slide groove (16), and an upper slide plate (17) and a lower slide plate (18) are slidably arranged in the vertical slide groove (16). The upper slide plate (17) and the lower slide plate (18) are fixedly connected by a stud (19) with a flat thread. The stud (19) is meshed with a gear (20), and the gear (20) is fixedly connected to the output shaft of the driving motor. The driving motor is fixed in the slider (3), and the upper slide plate (17) or the lower slide plate (18) is fixedly connected to a support plate (21), and the support plate (21) extends to a horizontal surface near the upper end of the slider (3). Controlling the forward and reverse rotation of the driving motor can cause the support plate (21) to raise or lower the height of the lifting rod (4).

7. A lifting device for pipeline installation construction as claimed in claim 6, characterized in that: The vertical slide groove (16) passes through two opposite side surfaces of the slider (3); the upper slide plate (17) or the lower slide plate (18) is fixedly connected to a vertical slide rod (22); the upper end of the vertical slide rod (22) is fixedly connected to one of the support plates (21); a return spring (25) is provided on the upper surface of the upper slide plate (17); two ends of the return spring (25) are respectively connected to the upper surface of the upper slide plate (17) and the top inner wall of the vertical slide groove (16).

8. A lifting device for pipeline installation construction as claimed in claim 7, characterized in that: Both sides of the slide block (3) are provided with a limiting slide groove (23) and a receiving slide groove (24); the limiting slide groove (23) is located at the top of the receiving slide groove (24); the vertical slide rod (22) is slidably arranged in the limiting slide groove (23); and the support plate (21) is slidably arranged in the receiving slide groove (24).

9. A lifting device for pipeline installation construction as claimed in claim 8, characterized in that: The support plate (21) is an arc-shaped plate with an opening facing upward, and the arc-shaped plate is used to support and limit the roller (10). The contour of the accommodating slide groove (24) is adapted to the contour of the arc-shaped plate.

10. A lifting device for pipeline installation construction as claimed in claim 4, characterized in that: The ends of the two screw rods are fixedly connected to baffles (26), and surfaces of the two baffles (26) that are close to each other are slidably connected to the surface of the moving frame (1).

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