Pipe lifting device

Abstract

The application provides a pipeline lifting device. The pipeline lifting device comprises a moving frame, a pipeline to be lifted is placed on the moving frame; a moving assembly, the moving assembly is adjustably connected with the moving frame, and is used for driving the moving frame to move along the length direction of the moving frame; a lifting assembly, the lifting assembly is adjustably connected with the moving frame, so that the lifting assembly moves along the width direction of the moving frame relative to the moving frame, at least a part of the lifting assembly is arranged to be liftable, and is used for lifting the pipeline to be lifted to a preset position; and a driving mechanism, the driving mechanism is drivingly connected with the moving assembly and the lifting assembly respectively. The application solves the problems of pipeline hoisting insecurity and inconvenience in the prior art.

Description

Technical Field

[0001] This invention relates to the field of mining operations technology, and more specifically, to a pipeline lifting device. Background Technology

[0002] Currently, most mine water supply and drainage pipelines, fire protection pipelines, and grouting pipelines are made of heavy-duty steel pipes. Most roadway pipelines require suspended installation at specified heights. During pipeline installation, workers must work at heights, securing hoisting equipment to the roadway ceiling or other elevated positions. After securing the hoisting equipment, the hoisting chains are tied to the pipeline, which is then pulled to the designated installation position. The hoisting and securing of the pipeline requires docking with other moving pipelines; even slight misalignment makes docking difficult, and adjusting the pipeline position is challenging. This process requires multiple people working together with hoisting equipment, is lengthy, and carries a high risk factor.

[0003] As can be seen from the above, the existing technology has the problem of unsafe and inconvenient pipeline hoisting. Summary of the Invention

[0004] The main objective of this invention is to provide a pipeline lifting device to solve the problems of unsafe and inconvenient pipeline hoisting in the prior art.

[0005] To achieve the above objectives, the present invention provides a pipeline lifting device, comprising: a movable frame on which the pipeline to be lifted is placed; a movable component, which is positionally adjustable to the movable frame and is used to drive the movable frame to move along the length direction of the movable frame; a lifting component, which is positionally adjustable to the movable frame so that the lifting component moves relative to the movable frame along the width direction of the movable frame, at least a portion of the lifting component being vertically and vertically configurable for lifting the pipeline to be lifted to a preset position; and a drive mechanism, which is drivenly connected to the movable component and the lifting component respectively.

[0006] Furthermore, the pipeline lifting device also includes a slide rail, which is mounted on a movable frame. The movable component includes a movable support leg and a fixed support leg, both of which are telescopically configurable. The movable support leg is slidably connected to the slide rail, and the fixed support leg is fixedly connected to the movable frame. The position of the movable support leg and the fixed support leg is adjustable.

[0007] Furthermore, the drive mechanism includes a first drive member, which is connected to the movable support leg and the fixed support leg respectively. After the movable support leg retracts and leaves the ground, the first drive member drives the movable support leg to move along the slide rail. The movable support leg extends and abuts against the ground, causing the fixed support leg to retract and leave the ground. The first drive member drives the fixed support leg to move in a direction closer to the movable support leg, thereby driving the movable frame to move.

[0008] Furthermore, there are multiple movable outriggers and multiple fixed outriggers. The multiple movable outriggers are arranged in pairs on both sides of the movable frame, and the multiple fixed outriggers are arranged in pairs on both sides of the movable frame.

[0009] Furthermore, the two movable legs and / or fixed legs of each group are fixedly connected by connectors, and when there are multiple groups of movable legs, the multiple groups of movable legs are fixedly connected by connectors.

[0010] Furthermore, the movable outrigger includes a first support leg and a first outrigger cylinder, and a sliding member is provided on the slide rail to slide along the slide rail. The first outrigger cylinder is connected to the first support leg and the sliding member respectively.

[0011] Furthermore, the fixed outrigger includes a second support leg and a second outrigger cylinder, with the second outrigger cylinder connected to the second support leg and the movable frame, respectively.

[0012] Furthermore, the lifting assembly includes: a lifting frame, which is disposed on one side of the movable frame and is rotatably connected to the movable frame; and two lifting arms, which are symmetrically arranged and rotatably connected to the lifting frame in the vertical direction, with the ends of the lifting arms having support members to support the pipeline to be lifted.

[0013] Furthermore, the drive mechanism includes a second drive member, which is connected to the lifting frame and the lifting arm respectively, and is used to drive the lifting arm to rotate.

[0014] Furthermore, the lifting arm includes a first section, a second section, and a telescopic cylinder, which is connected to the first section and the second section respectively. The first section is rotatably connected to the lifting frame, and the end of the second section has a lifting element.

[0015] Furthermore, the drive mechanism includes a third drive member, which is connected to the lifting frame and the movable frame respectively, and is used to drive the lifting frame to move relative to the movable frame.

[0016] Furthermore, the lifting component has a U-shaped groove for accommodating the pipeline to be lifted, and rollers are provided on both sides of the U-shaped groove.

[0017] The technical solution of this invention provides a pipeline lifting device comprising a movable frame, a movable component, a lifting component, and a drive mechanism. The pipeline to be lifted is placed on the movable frame. The movable component is tunably connected to the movable frame and is used to move the movable frame along its length. The lifting component is tunably connected to the movable frame so that it moves relative to the movable frame along its width. At least a portion of the lifting component is vertically adjustable to lift the pipeline to a preset position. The drive mechanism is connected to both the movable component and the lifting component. This allows workers to automatically control the movement position of the pipeline lifting device and the lifting position of the pipeline through the drive mechanism. The entire lifting process requires no manual intervention, is convenient and quick, and saves manpower. Once the pipeline is lifted to the preset position, it is then hoisted and connected, which shortens the time required for working at height, reduces the risk factor, and ensures the personal safety of workers. This solves the problem of unsafe and inconvenient pipeline hoisting in the prior art. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0019] Figure 1 A schematic diagram of the pipeline lifting device in a specific embodiment of the present invention is shown;

[0020] Figure 2 A schematic diagram of the structure of the movable frame in a specific embodiment of the present invention is shown;

[0021] Figure 3 A schematic diagram of the lifting frame in a specific embodiment of the present invention is shown;

[0022] Figure 4 A schematic diagram of the lifting frame performing lifting in a specific embodiment of the present invention is shown;

[0023] Figure 5 A structural schematic diagram of the lifting member at one angle is shown in a specific embodiment of the present invention;

[0024] Figure 6 A structural schematic diagram of the lifting member from another angle is shown in a specific embodiment of the present invention.

[0025] The above figures include the following reference numerals:

[0026] 10. Movable frame; 20. Slide rail; 30. Movable support leg; 31. First support leg; 32. First support leg cylinder; 40. Fixed support leg; 41. Second support leg; 42. Second support leg cylinder; 50. First drive component; 60. Connecting component; 70. Sliding component; 80. Lifting frame; 81. Connecting beam; 82. Pivot beam; 83. Trumpet-shaped structure; 90. Lifting arm; 91. First section; 92. Second section; 93. Telescopic cylinder; 100. Lifting component; 101. Roller; 110. Second drive component; 120. Third drive component. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0030] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0031] To address the issues of unsafe and inconvenient hoisting in existing technologies, this invention provides a pipeline lifting device.

[0032] like Figures 1 to 4 As shown, the pipeline lifting device includes a movable frame 10, a movable assembly, a lifting assembly, and a drive mechanism. The pipeline to be lifted is placed on the movable frame 10. The movable assembly is adjustablely connected to the movable frame 10 and is used to move the movable frame 10 along its length. The lifting assembly is also adjustablely connected to the movable frame 10 so that it can move relative to the movable frame 10 along its width. At least a portion of the lifting assembly is vertically detachable and used to lift the pipeline to be lifted to a preset position. The drive mechanism is connected to both the movable assembly and the lifting assembly.

[0033] By setting up a pipeline lifting device including a movable frame 10, a movable component, a lifting component, and a drive mechanism, the pipeline to be lifted is placed on the movable frame 10. The movable component is flexibly connected to the movable frame 10 to move the movable frame 10 along its length. The lifting component is flexibly connected to the movable frame 10 to move relative to the movable frame 10 along its width. At least a portion of the lifting component is vertically adjustable to lift the pipeline to a preset position. The drive mechanism is connected to both the movable component and the lifting component. This allows workers to automatically control the movement of the pipeline lifting device and the lifting position of the pipeline through the drive mechanism. The entire lifting process requires no manual intervention, making it convenient, fast, and labor-saving. Once the pipeline is lifted to the preset position, it can be hoisted and connected, shortening the time required for working at height, avoiding the safety risks of chain breakage associated with using hoisting tools, and eliminating the need for climbing to install hoisting tools, thus reducing the risk factor and ensuring the safety of workers. Furthermore, the pipeline lifting device in this embodiment can carry the pipeline during continuous operation and can be quickly moved to the next installation position, thereby improving work efficiency.

[0034] In this embodiment, the movable frame 10 is rectangular, and the pipeline to be lifted is placed along the length of the movable frame 10, with the length of the movable frame 10 being slightly smaller than the length of the pipeline to be lifted. It can be understood that by adjusting the positions of the movable component and the lifting component to the movable frame 10, the lifting component can move along the length and width directions of the movable frame 10, which is equivalent to being able to move along the X-axis and Y-axis directions. This allows the lifting component to flexibly move to below the desired installation position of the pipeline to be lifted, and then lift the pipeline to the preset position.

[0035] like Figure 2 As shown, the pipeline lifting device also includes a slide rail 20. The slide rail 20 is mounted on the movable frame 10, and its extension direction is parallel to the length direction of the movable frame 10. A sliding element 70 is provided on the slide rail 20, which slides along the slide rail 20. The movable assembly includes a movable support leg 30 and a fixed support leg 40, both of which are telescopically detachable. Under normal circumstances, both the movable support leg 30 and the fixed support leg 40 are in contact with the ground. When the movable frame 10 needs to move, the movable support leg 30 and the fixed support leg 40 can retract and detach from the ground. The movable support leg 30 is slidably connected to the slide rail 20; specifically, the movable support leg 30 is fixedly connected to the sliding element 70, thereby achieving a slidable connection with the slide rail 20. The fixed support leg 40 is fixedly connected to the movable frame 10, and the position of the movable support leg 30 and the fixed support leg 40 is adjustable.

[0036] Furthermore, there are multiple movable support legs 30 and fixed support legs 40. The movable support legs 30 are arranged in pairs on both sides of the movable frame 10, and the fixed support legs 40 are also arranged in pairs on both sides of the movable frame 10. Correspondingly, there are also two slide rails 20, each arranged on one side of the movable frame 10. In this embodiment, there are four movable support legs 30 and four fixed support legs 40, that is, two sets of movable support legs 30 and two sets of fixed support legs 40, and the sets of movable support legs 30 and fixed support legs 40 are staggered along the length of the movable frame 10. The set of movable support legs 30 located in the middle is arbitrarily connected to the set of fixed support legs 40.

[0037] like Figures 1 to 2 As shown, the two movable legs 30 in each group are fixedly connected by a connector 60, and the two fixed legs 40 in each group are also fixedly connected by a connector 60. When there are multiple groups of movable legs 30, these groups are fixedly connected by connectors 60. In this embodiment, two groups of movable legs 30 are further fixedly connected by connectors 60 to the connectors 60 connecting the two movable legs 30 in each group, thus forming a single unit and enabling them to move together along the slide rail 20.

[0038] In this embodiment, the connector 60 is a connecting channel steel.

[0039] like Figures 1 to 2 As shown, the driving mechanism includes a first driving member 50, which is connected to a movable support leg 30 and a fixed support leg 40. After the movable support leg 30 retracts and leaves the ground, the first driving member 50 drives the movable support leg 30 to move along the slide rail 20. The movable support leg 30 extends and abuts against the ground, causing the fixed support leg 40 to retract and leave the ground. The first driving member 50 then drives the fixed support leg 40 to move in a direction closer to the movable support leg 30, thereby moving the movable frame 10. Specifically, in this embodiment, the first driving member 50 is connected to a set of movable support legs 30 and a set of fixed support legs 40 located in the middle position.

[0040] In this embodiment, the first driving component 50 is a driving cylinder. Specifically, the cylinder base of the first driving component 50 is connected to a connector 60 that connects two movable support legs 30 in a set, and the piston rod of the first driving component 50 is connected to a connector 60 that connects two fixed support legs 40 in a set.

[0041] like Figure 2As shown, the movable support leg 30 includes a first support leg 31 and a first support leg cylinder 32. The first support leg cylinder 32 is connected to both the first support leg 31 and the sliding member 70. Specifically, the cylinder base of the first support leg cylinder 32 is connected to the sliding member 70, and the piston rod of the first support leg cylinder 32 is connected to the first support leg 31. Correspondingly, the fixed support leg 40 includes a second support leg 41 and a second support leg cylinder 42. The second support leg cylinder 42 is connected to both the second support leg 41 and the movable frame 10. Specifically, the cylinder base of the second support leg cylinder 42 is connected to the movable frame 10, and the piston rod of the second support leg cylinder 42 is connected to the second support leg 41.

[0042] by Figure 2 Taking the upward movement along the middle as an example, it should be noted that... Figure 2 The upward direction in the diagram is actually a horizontal leftward direction. The four first-leg cylinders 32 of the two sets of movable outriggers 30 simultaneously retract, causing the four first-support legs 31 to lift off the ground. At this point, the two sets of fixed outriggers 40 bear the entire weight of the device. Then, the first drive member 50 retracts, causing the two sets of movable outriggers 30 to move simultaneously to the left. Afterward, the four first-leg cylinders 32 of the two sets of movable outriggers 30 simultaneously extend, causing the four first-support legs 31 to contact the ground. Simultaneously, the four second-leg cylinders 42 of the two sets of fixed outriggers 40 retract, causing the four second-support legs 41 to lift off the ground. At this point, the two sets of movable outriggers 30 bear the entire weight of the device. Then, the first drive member 50 extends to the left, causing the two sets of fixed outriggers 40 to move simultaneously to the left, thus causing the movable frame 10 to also move to the left. The process of moving to the right is similar and will not be described further here.

[0043] like Figure 1 , Figures 3 to 4 As shown, the lifting assembly includes a lifting frame 80 and lifting arms 90. The lifting frame 80 is disposed on one side of the movable frame 10 and is variably connected to the movable frame 10. There are two lifting arms 90, which are symmetrically arranged and rotatably connected to the lifting frame 80 in the vertical direction. The ends of the lifting arms 90 have support members 100 for supporting the pipeline to be lifted. In this embodiment, the lifting frame 80 is also rectangular, and the length of the lifting frame 80 is the same as the length of the movable frame 10.

[0044] like Figure 1 , Figures 3 to 4As shown, the drive mechanism includes a second drive member 110, which is connected to the lifting frame 80 and the lifting arm 90 respectively, and is used to drive the lifting arm 90 to rotate. In this embodiment, the second drive member 110 is also a drive cylinder, and there are two second drive members 110. The middle part of the lifting frame 80 has a connecting beam 81, and the two lifting arms 90 are symmetrically arranged with respect to the connecting beam 81. The cylinder bases of the two second drive members 110 are respectively connected to the connecting beam 81, and the cylinder bases of the two second drive members 110 are respectively connected to one end of the two lifting arms 90. Furthermore, there are pivot beams 82 on both sides of the connecting beam 81, and the two lifting arms 90 are rotatably connected to the two pivot beams 82 by pins. In the initial state, the lifting arm 90 is parallel to the lifting frame 80. When the second drive member 110 extends outward, it can drive the lifting arm 90 to rotate upward with respect to the pivot beam 82, thereby lifting the pipeline to be lifted to a preset position.

[0045] like Figures 3 to 4 As shown, the lifting arm 90 includes a first section 91, a second section 92, and a telescopic cylinder 93. The telescopic cylinder 93 is connected to both the first section 91 and the second section 92. The first section 91 is rotatably connected to the lifting frame 80, and the end of the second section 92 has a support member 100. In other words, the lifting arm 90 is a two-stage telescopic sleeve structure, which increases the overall length of the lifting arm 90, improves its applicability, and has a smaller length in the initial state, avoiding excessive space occupation.

[0046] like Figure 1 As shown, the drive mechanism includes a third drive member 120. The third drive member 120 is connected to both the lifting frame 80 and the movable frame 10, and is used to drive the lifting frame 80 to move relative to the movable frame 10. In this embodiment, the third drive member 120 is also a drive cylinder. The lifting frame 80 has a telescopic rod extending toward the movable frame 10 at its center. Correspondingly, the movable frame 10 has a telescopic cylinder. The telescopic rod passes through the telescopic cylinder and its end is connected to the piston rod of the third drive member 120. In this way, the third drive member 120 can control the lifting frame 80 to move closer to or away from the movable frame 10.

[0047] like Figures 5 to 6 As shown, the lifting member 100 has a U-shaped groove for accommodating the lifting pipe, and rollers 101 are arranged on both sides of the U-shaped groove. Specifically, there are three rollers 101 on each side of the U-shaped groove, with the rollers 101 at both ends arranged vertically and the roller 101 in the middle arranged horizontally. Through the above arrangement, the lifting pipe is in rolling contact with the rollers 101 when it is accommodated in the U-shaped groove, thereby reducing friction and collision.

[0048] In this embodiment, both ends of the pipeline to be lifted are respectively housed in the support members 100 at the ends of the two lifting arms 90. The support members 100 are connected to the lifting arms 90 by pins, so that the opening of the support members 100 faces upward under the gravity of the pipeline to be lifted. Furthermore, the lifting frame 80 is also provided with a corresponding flared structure 83. When the lifting arms 90 fall back, the support members 100 will fall into the flared structure 83, so that the opening of the flared structure 83 remains upward, facilitating the placement of the next pipeline to be lifted.

[0049] In this embodiment, the pipeline lifting device also includes a hydraulic power component, which includes an oil pump, an oil pump motor, a high-pressure hydraulic pipe, and a multi-way hydraulic control valve to provide hydraulic thrust for all drive cylinders.

[0050] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: By setting the pipeline lifting device to include a movable frame 10, a movable component, a lifting component, and a driving mechanism, the pipeline to be lifted is placed on the movable frame 10, the movable component is arbitrarily connected to the movable frame 10 to drive the movable frame 10 to move along the length direction of the movable frame 10, the lifting component is arbitrarily connected to the movable frame 10 to allow the lifting component to move relative to the movable frame 10 along the width direction of the movable frame 10, and at least a portion of the lifting component is vertically and vertically configurable to lift the pipeline to be lifted. Once the pipeline is lifted to the preset position, the drive mechanism connects to both the moving and lifting components. This allows workers to automatically control the movement and lifting position of the pipeline lifting device and the pipeline itself via the drive mechanism. The entire lifting process requires no manual intervention, making it convenient, fast, and labor-saving. After the pipeline is lifted to the preset position, it is then hoisted and connected, shortening the time spent working at heights and avoiding the safety risks associated with chain breakage from using hoisting tools. It also eliminates the need for climbing to install hoisting tools, reducing the risk factor and ensuring worker safety. Furthermore, the pipeline lifting device in this embodiment allows for continuous pipeline movement during operations, enabling rapid relocation to the next installation location, thereby improving work efficiency.

[0051] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0052] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipeline lifting device, characterized in that, include: Mobile rack (10); A movable component is tunably connected to the movable frame (10) and is used to drive the movable frame (10) to move along the length direction of the movable frame (10); A lifting assembly is provided on which the pipeline to be lifted is placed. The lifting assembly is positionally connected to the movable frame (10) so that the lifting assembly can move relative to the movable frame (10) along the width direction of the movable frame (10). At least a portion of the lifting assembly is vertically and vertically configured to lift the pipeline to be lifted to a preset position. A drive mechanism, which is drivenly connected to both the moving component and the lifting component; The lifting assembly includes: A lifting frame (80) is disposed on one side of the movable frame (10) and is tunably connected to the movable frame (10); Lifting arms (90), there are two lifting arms (90), the two lifting arms (90) are symmetrically arranged and respectively rotatably connected to the lifting frame (80) in the vertical direction, and the end of the lifting arm (90) has a support member (100) to support the pipeline to be lifted. The drive mechanism includes a third drive member (120), which is connected to the lifting frame (80) and the movable frame (10) respectively, and is used to drive the lifting frame (80) to move relative to the movable frame (10); The lifting frame (80) has a telescopic rod extending toward the movable frame (10) in the middle. The movable frame (10) has a telescopic cylinder. The telescopic rod passes through the telescopic cylinder and its end is connected to the piston rod of the third drive member (120). The third drive member (120) drives the lifting frame (80) to move closer to or away from the movable frame (10). The pipeline lifting device also includes a slide rail (20), which is mounted on the movable frame (10). The movable component includes a movable leg (30) and a fixed leg (40). Both the movable leg (30) and the fixed leg (40) are telescopically mounted. The movable leg (30) is slidably connected to the slide rail (20), and the fixed leg (40) is fixedly connected to the movable frame (10). The movable leg (30) and the fixed leg (40) are connected in an adjustable position. The lifting frame (80) is provided with a horn-shaped structure (83). When the lifting arm (90) falls back, the lifting member (100) will fall into the horn-shaped structure (83) to facilitate the placement of the next pipe to be lifted.

2. The pipeline lifting device according to claim 1, characterized in that, The driving mechanism includes a first driving member (50), which is connected to the movable support leg (30) and the fixed support leg (40) respectively. After the movable support leg (30) retracts and leaves the ground, the first driving member (50) drives the movable support leg (30) to move along the slide rail (20). The movable support leg (30) extends and abuts against the ground, causing the fixed support leg (40) to retract and leave the ground. The first driving member (50) drives the fixed support leg (40) to move in a direction close to the movable support leg (30), thereby driving the movable frame (10) to move.

3. The pipeline lifting device according to claim 1, characterized in that, There are multiple movable legs (30) and multiple fixed legs (40). The multiple movable legs (30) are arranged in pairs on both sides of the movable frame (10), and the multiple fixed legs (40) are arranged in pairs on both sides of the movable frame (10).

4. The pipeline lifting device according to claim 3, characterized in that, The two movable legs (30) and / or the fixed legs (40) of each group are fixedly connected by a connector (60), and when there are multiple groups of movable legs (30), the multiple groups of movable legs (30) are fixedly connected by the connector (60).

5. The pipeline lifting device according to claim 1, characterized in that, The movable support leg (30) includes a first support leg (31) and a first support leg cylinder (32). A sliding member (70) is provided on the slide rail (20) and slides along the slide rail (20). The first support leg cylinder (32) is connected to the first support leg (31) and the sliding member (70) respectively.

6. The pipeline lifting device according to claim 1, characterized in that, The fixed support leg (40) includes a second support leg (41) and a second support leg cylinder (42), the second support leg cylinder (42) being connected to the second support leg (41) and the movable frame (10) respectively.

7. The pipeline lifting device according to claim 1, characterized in that, The driving mechanism includes a second driving member (110), which is connected to the lifting frame (80) and the lifting arm (90) respectively, and is used to drive the lifting arm (90) to rotate.

8. The pipeline lifting device according to claim 1, characterized in that, The lifting arm (90) includes a first section (91), a second section (92) and a telescopic cylinder (93). The telescopic cylinder (93) is connected to the first section (91) and the second section (92) respectively. The first section (91) is rotatably connected to the lifting frame (80). The end of the second section (92) has the lifting member (100).

9. The pipeline lifting device according to claim 1, characterized in that, The lifting member (100) has a U-shaped groove for accommodating the pipeline to be lifted, and rollers (101) are provided on both sides of the U-shaped groove.

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