Pipe lifting device

Abstract

The utility model relates to the technical field of tubular product production, more particularly to a tubular product lifting device, which comprises a first support, a tubular product moving assembly, a lifting assembly and a limiting assembly. The tubular product moving assembly is used to place tubular products and assist in moving the tubular products to the limiting assembly. The limiting assembly comprises a second support, a moving support, an abutting piece and a fixing piece. When the lifting device is in operation, the external lifting tool moves and places the tubular products on the tubular product moving assembly. The tubular products can be moved to the lifting assembly through the tubular product moving assembly. During the process, the limiting assembly limits the tubular products to prevent them from rolling laterally. After the tubular products are moved to the limiting assembly, the lifting assembly drives the limiting assembly and the tubular products to be lifted to a set position for feeding under the limiting action. The external cutting equipment can cut the tubular products, thereby meeting the feeding requirements of the hoisted and moved heavy tubular products.

Description

Technical Field

[0001] This utility model relates to the field of pipe manufacturing technology, and more specifically, to a pipe lifting device. Background Technology

[0002] In the field of modern pipeline engineering, large-diameter pipelines are widely used in key scenarios such as municipal water supply and drainage, urban centralized heating, long-distance oil and gas transportation, industrial circulating water transportation, and agricultural irrigation main pipelines. With the acceleration of urbanization, the expansion of large-scale industrial projects, and the surge in demand for infrastructure upgrades, traditional pipeline materials (such as metal pipes, pure plastic pipes, and ordinary composite pipes) are gradually revealing their performance shortcomings. Various types of high-strength steel wire mesh reinforced composite pipes, with their composite advantages of "metal skeleton reinforcement + corrosion resistance of polymer materials," have become an important development direction for large-diameter pipelines. Due to their large diameter, multiple composite layers, and the inclusion of a metal mesh skeleton, these large-diameter pipelines are not only stronger but also very heavy. When processing is required, lifting equipment is generally used to transfer the pipes, and then cutting equipment is used to cut them. Some equipment requires lifting and loading the pipes during the cutting process. Existing ordinary lifting or hoisting equipment is not designed to accommodate heavy pipes and is unsuitable for lifting and loading heavy pipes, resulting in poor performance. Utility Model Content

[0003] To overcome the shortcomings of ordinary equipment in the prior art that cannot meet the lifting and feeding requirements of heavy pipes, this utility model provides a pipe lifting device that meets the lifting and feeding requirements of heavy pipes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a pipe lifting device, comprising: a first support, a plurality of pipe moving components respectively disposed beside the first support, a lifting component connected to the first support, and a limiting component disposed on the lifting end of the lifting component. The pipe moving component is used to place the pipe and assist the pipe in moving to the limiting component. The limiting component includes a second support disposed on the lifting end of the lifting component, a moving support slidably connected to the second support, an abutment disposed on the moving support, and a fixing component respectively connected to the moving support. The moving support is disposed on both sides of the second support. The abutment is used to abut against the pipe for limiting the movement. The fixing component is used to fix the moving support on the second support.

[0005] The pipe moving assembly is used to receive and transport pipes. Multiple pipe moving assemblies are spaced apart next to the first support. After the external lifting equipment transfers the pipes, they are placed directly on the pipe moving assembly. Specifically, the pipe moving assembly adopts a powered or unpowered conveying structure. For powered conveying structures, existing pipe conveying equipment can be referenced. When using an unpowered conveying structure, the pipes are manually pushed onto the lifting assembly. During the process of the pipes moving to the lifting assembly, and during the process of the lifting assembly lifting the pipes, the limiting components on the lifting assembly always limit the pipes. The pipes will slide relative to the working end of the limiting components during movement; therefore, the working end of the limiting components is preferably designed as an arc-shaped structure or a cylindrical rolling structure to avoid... Scratching the pipe; During the entire process of the pipe moving from the pipe moving component to the limiting component, depending on the different settings, there are at least two ways for the pipe to move. One is that the pipe moves entirely on the pipe moving component. After moving to the correct position, the pipe is still on the pipe moving component. When the lifting component rises, it lifts the pipe and takes it to the upper set position for cutting. The other is that the lifting component and / or the limiting component are equipped with a structure that allows the pipe to move, such as rollers or drums. During the movement of the pipe, it moves from the pipe moving component to the lifting component and / or the limiting component. After moving to the correct position, the pipe and the pipe moving component are separated. Then the lifting component directly lifts the pipe to the set position for feeding and cutting.

[0006] The second support is fixed on the lifting end of the lifting assembly. There are at least two movable supports, which are respectively set on both sides of the second support. The pipe is then abutted and limited by the abutting parts. The abutting parts move with the movable support to adjust the interval between the abutting parts to accommodate pipes of different diameters. The number of fixing parts corresponds to the movable support. The fixing parts can be threaded abutting or pin-insertion, etc. When using pins, the insertion position of the pins is set according to the commonly used production pipe diameter. That is, each pin fixing position corresponds to the pipe diameter to be produced, which facilitates switching. Depending on the length of the pipe, at least one movable support is set on one side of the second support. If the pipe is too long, two or more movable supports are set on one side of the second support. Then the movable supports on both sides of the second support work in pairs.

[0007] Preferably, the limiting component further includes a first driving component connected to the second bracket, a first gear disposed on the driving end of the first driving component, and first racks disposed on both sides of the first gear. The first gear meshes with the first racks, the first racks are slidably connected to the second bracket, and the first racks are fixedly connected to the movable bracket.

[0008] The first gear simultaneously drives the first racks on both sides, allowing the corresponding two movable supports to move synchronously towards the center or sides, thus maintaining the limiting center unchanged for ease of use. The number of first racks is the same as the number of movable supports. The first drive assembly and the first gear are set according to the number of groups of movable supports, with one first drive assembly and one first gear for each group. The first drive assembly is driven by a motor or a handwheel.

[0009] Preferably, the abutment is a cylindrical part and is rotatably connected to the movable support. The abutment is inclined as a whole and abuts and supports the lower side of the pipe.

[0010] The abutment is designed as a rotatable cylindrical part, which facilitates the movement of the pipe. The cylindrical part, i.e., the abutment, is tilted as a whole, which serves as a limit. The abutments on both sides work together to provide support. It can be used as a moving structure for the pipe. During the movement of the pipe, it moves from the pipe moving component to the abutment, which is equivalent to moving to the lifting component. The lifting component rises directly to lift the pipe. This belongs to the second type of pipe moving scheme mentioned above. During the movement and lifting process, the pipe is more stable as a whole.

[0011] Preferably, the first drive assembly includes a handwheel and a shaft that are rotatably connected to the second bracket, a sprocket that is respectively disposed on the handwheel and the shaft, a chain that is fitted on the sprocket, and the first gear that is fixedly disposed on the shaft.

[0012] Rotating the handwheel drives the first gear through the transmission effect of the chain and sprocket, thus achieving the driving effect. Using a handwheel is low-cost and practical.

[0013] Preferably, the limiting component further includes a connecting plate connected to the movable bracket and a positioning plate fixedly connected to the second bracket. The positioning plate is provided with a plurality of positioning holes according to different pipe diameters and materials. The fixing member is inserted into the connecting plate and passes through the connecting plate to be inserted into the positioning holes for fixation.

[0014] When the fastener is inserted into the connecting plate, it can be kept relatively fixed to the connecting plate. The bottom of the fastener is inserted into the positioning hole to fix the moving bracket. The position of the positioning hole is set according to the pipe diameter. During operation, the moving brackets on both sides of the second bracket are switched to the set position in advance and fixed with the fastener before continuing to work.

[0015] Preferably, the lifting assembly includes a lifting frame that is vertically slidably connected to the first bracket, a drive motor connected to the lifting frame, a rotating shaft connected to the output shaft of the drive motor, a second gear disposed on the rotating shaft, and a second rack fixed on the first bracket, wherein the second gear meshes with the second rack.

[0016] The drive motor is fixed on the lifting frame and drives the second gear to rotate. The second gear rolls on the second rack, thereby driving the drive motor and other components such as the lifting frame to move up and down.

[0017] Preferably, the lifting assembly further includes a dual-output gearbox connected to the output shaft of the drive motor, the rotating shaft being connected to the two output ends of the dual-output gearbox, and the number of the second racks corresponding to the number of the second gears being respectively disposed on both sides of the lifting frame.

[0018] The drive motor is divided into two output shafts through a dual-output gearbox. Each output shaft is equipped with a second gear, which meshes with the second racks on both sides of the lifting frame to improve the lifting stability of the lifting frame.

[0019] Preferably, the first bracket is provided with lifting components on both sides, and all the lifting components move up and down synchronously.

[0020] Preferably, the pipe moving assembly includes a floor frame disposed next to the first support and a support roller rotatably connected to the floor frame, wherein the outer surface of the support roller is provided with an annular groove for placing the pipe.

[0021] The support roller is horizontally mounted on the floor frame and is rotatably connected to the floor frame. An annular groove is provided on the side of the support roller to restrict the pipe and prevent it from rolling left and right after being placed on the support roller. The cross-section of the annular groove is V-shaped or U-shaped.

[0022] Preferably, the floor frame is a fixed structure or a height-adjustable structure.

[0023] When the floor frame is designed as a height-adjustable structure, a corresponding locking structure should be installed, such as a pin or screw.

[0024] Compared with the prior art, the beneficial effects of this utility model are: With the above configuration, when this lifting device is in operation, the external lifting device moves the pipe and places it on the pipe moving assembly. The pipe moving assembly then moves the pipe to the lifting assembly. During the process, the limiting assembly limits the pipe to prevent it from rolling laterally. After the pipe moves onto the limiting assembly, the lifting assembly, under the limiting action, lifts the limiting assembly and the pipe together to a set position for loading, so that the external cutting equipment can cut the pipe, thereby meeting the loading requirements of heavy pipes for hoisting and moving. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of a pipe lifting device according to this utility model; Figure 2This is a schematic diagram of the installation structure of the lifting assembly and the limiting assembly of a pipe lifting device according to this utility model; Figure 3 This is a schematic diagram of the limiting component structure of a pipe lifting device according to this utility model; Figure 4 yes Figure 3 Enlarged schematic diagram of part A; Figure 5 This is a schematic diagram of the lifting component structure of a pipe lifting device according to this utility model; Figure 6 This is a schematic diagram of the pipe moving component structure of a pipe lifting device according to this utility model.

[0026] In the picture: 1. First support; 2. Pipe moving assembly; 201. Floor frame; 202. Support rollers; 203. Annular groove; 3. Lifting assembly; 301. Lifting frame; 302. Drive motor; 303. Rotating shaft; 304. Second gear; 305. Second rack; 306. Dual-output gearbox; 4. Limiting component; 401. Second bracket; 402. Movable bracket; 403. Abutment; 404. Fixing component; 405. First drive component; 4051. Handwheel; 4052. Rotating shaft; 4053. Sprocket; 4054. Chain; 406. First gear; 407. First rack; 408. Connecting plate; 409. Positioning plate; 410. Positioning socket. Detailed Implementation

[0027] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0028] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example 1 like Figure 1 As shown, a pipe lifting device includes: a first support 1, a plurality of pipe moving components 2 respectively disposed beside the first support 1, a lifting component 3 connected to the first support 1, and a limiting component 4 disposed on the lifting end of the lifting component 3. The pipe moving components 2 are used to place the pipe and assist the pipe in moving to the limiting component 4. Figure 3 As shown, the limiting component 4 includes a second bracket 401 disposed on the lifting end of the lifting component 3, a movable bracket 402 slidably connected to the second bracket 401, an abutment 403 disposed on the movable bracket 402, and a fixing member 404 connected to the movable bracket 402. The movable bracket 402 is disposed on both sides of the second bracket 401. The abutment 403 is used to abut against the pipe for limiting, and the fixing member 404 is used to fix the movable bracket 402 on the second bracket 401.

[0030] Pipe moving assembly 2 is used to receive and transport pipes. Multiple pipe moving assemblies 2 are spaced apart next to the first support 1. After the external lifting device transfers the pipes, they are placed directly on the pipe moving assembly 2. Specifically, the pipe moving assembly 2 adopts a powered or unpowered conveying structure. The powered conveying structure can refer to existing pipe conveying equipment. When using an unpowered conveying structure, the pipes are manually pushed onto the lifting assembly 3. During the process of the pipes moving to the lifting assembly 3, and during the process of the lifting assembly 3 lifting the pipes, the limiting component 4 on the lifting assembly 3 always limits the pipes. During the movement of the pipes, they will slide relative to the working end of the limiting component 4. Therefore, the working end of the limiting component 4 is preferably set as an arc surface structure or a columnar rolling structure to avoid... Scratching the pipe; During the entire process of the pipe moving from the pipe moving component 2 to the limiting component 4, depending on the different settings, there are at least two ways for the pipe to move. One is that the pipe moves entirely on the pipe moving component 2. After moving to the correct position, the pipe is still on the pipe moving component 2. When the lifting component 3 rises, it lifts the pipe and raises it to the upper set position for cutting. The other is that a structure that allows the pipe to move is set on the lifting component 3 and / or the limiting component 4, such as rollers or drums. During the movement of the pipe, it moves from the pipe moving component 2 to the lifting component 3 and / or the limiting component 4. After moving to the correct position, the pipe is separated from the pipe moving component 2. Then the lifting component 3 directly lifts the pipe to the set position for feeding and cutting.

[0031] The second support 401 is fixed on the lifting end of the lifting assembly 3. At least two movable supports 402 are provided, and they are respectively set on both sides of the second support 401. The pipe is then abutted and limited by the abutting parts 403. The abutting parts 403 move with the movable support 402 to adjust the interval between the abutting parts 403 to adapt to pipes of different diameters. The number of fixing parts 404 corresponds to the movable support 402. The fixing parts 404 can be selected by threaded tightening abutment or pin insertion. When using pins, the insertion position of the pins is set according to the commonly used production pipe diameter. That is, each pin fixing position corresponds to the pipe diameter to be produced, which is convenient for switching. Depending on the length of the pipe, at least one movable support 402 is set on one side of the second support 401. If the pipe is too long, two or more movable supports 402 are set on one side of the second support 401. Then the movable supports 402 on both sides of the second support 401 work in pairs.

[0032] The beneficial effects of this embodiment are as follows: With the above-mentioned settings, when this lifting device is in operation, the external lifting tool moves the pipe and places it on the pipe moving component 2. The pipe can then be moved to the lifting component 3 by the pipe moving component 2. During the process, the limiting component 4 limits the pipe to ensure that the pipe does not roll laterally. After the pipe moves to the limiting component 4, under the limiting action, the lifting component 3 drives the limiting component 4 and the pipe to be lifted together to the set position for loading, so that the external cutting equipment can cut the pipe, thereby meeting the loading requirements of heavy pipes that are hoisted and moved.

[0033] Example 2 This embodiment further defines the features of Embodiment 1, and its difference from Embodiment 1 lies in: like Figure 2-4As shown, the limiting component 4 also includes a first drive component 405 connected to the second bracket 401, a first gear 406 disposed on the drive end of the first drive component 405, and first racks 407 respectively disposed on both sides of the first gear 406. The first gear 406 meshes with the first racks 407, the first racks 407 are slidably connected to the second bracket 401, and the first racks 407 are fixedly connected to the movable bracket 402. The abutment 403 is a cylindrical part and is rotatably connected to the movable bracket 402. The abutment 403 is inclined as a whole and abuts and supports the lower side of the pipe. The first drive component 405 includes a handwheel 4051 and a rotating shaft 4052 respectively rotatably connected to the second bracket 401, a sprocket 4053 respectively disposed on the handwheel 4051 and the rotating shaft 4052, and a chain 4054 fitted on the sprocket 4053. The first gear 406 is fixedly disposed on the rotating shaft 4052. The limiting component 4 also includes a connecting plate 408 that is connected to the movable bracket 402 and a positioning plate 409 that is fixedly connected to the second bracket 401. The positioning plate 409 is provided with a plurality of positioning holes 410 according to different pipe diameters and materials. The fixing member 404 is inserted into the connecting plate 408 and passes through the connecting plate 408 and is inserted into the positioning hole 410 for fixing.

[0034] The first gear 406 simultaneously drives the first racks 407 on both sides, allowing the corresponding two movable supports 402 to move synchronously towards the center or sides, thus maintaining the limiting center unchanged for convenient use. The number of first racks 407 is the same as the number of movable supports 402. The first drive assembly 405 and the first gear 406 are set according to the number of groups of movable supports 402, with one first drive assembly 405 and one first gear 406 for each group. The first drive assembly 405 is driven by a motor or handwheel 4051. The abutment 403 is set as a rotatable cylindrical part, which facilitates the movement of the pipe. The cylindrical part, i.e., the abutment 403, is tilted as a whole, which serves as a limiting function. The abutments 403 on both sides work together to provide support, which can serve as a moving structure for the pipe. During the movement of the pipe, it moves from the pipe moving assembly 2 to the abutment 403, which is equivalent to moving to the lifting assembly 3. The lifting assembly 3 rises directly to drive the pipe upward, which belongs to the second type of pipe moving scheme mentioned above. During the movement and lifting process, the pipe is more stable as a whole. Rotating the handwheel 4051 drives the first gear 406 through the transmission effect of the chain 4054 and sprocket 4053, achieving the driving effect. The handwheel 4051 is low-cost and practical. When the fixing member 404 is inserted into the connecting plate 408, it can remain relatively fixed to the connecting plate 408. The bottom of the fixing member 404 is inserted into the positioning hole 410 to fix the moving bracket 402. The position of the positioning hole 410 is set according to the pipe diameter. During operation, the moving brackets 402 on both sides of the second bracket 401 are switched to the set position in advance and fixed with the fixing member 404 before continuing to work.

[0035] The remaining features and working principles of this embodiment are the same as those of Embodiment 1.

[0036] Example 3 Based on Example 1 or Example 2, Example 1 or Example 2 are further defined, with the following differences: like Figure 2 and Figure 5 As shown, the lifting assembly 3 includes a lifting frame 301 vertically slidably connected to the first support 1, a drive motor 302 connected to the lifting frame 301, a rotating shaft 303 connected to the output shaft of the drive motor 302, a second gear 304 mounted on the rotating shaft 303, and a second rack 305 fixed to the first support 1. The second gear 304 meshes with the second rack 305. The lifting assembly 3 also includes a dual-output gearbox 306 connected to the output shaft of the drive motor 302. The rotating shaft 303 is connected to the two output ends of the dual-output gearbox 306. The number of second racks 305 corresponds to the number of second gears 304, and they are respectively arranged on both sides of the lifting frame 301. Lifting assemblies 3 are provided on both sides of the first support 1, and all lifting assemblies 3 lift synchronously. Figure 1 and Figure 6 As shown, the pipe moving assembly 2 includes a floor frame 201 disposed next to the first support 1 and a support roller 202 rotatably connected to the floor frame 201. The outer surface of the support roller 202 is provided with an annular groove 203 for placing the pipe. The floor frame 201 is a fixed structure or a liftable structure.

[0037] The drive motor 302 is fixed to the lifting frame 301 and drives the second gear 304 to rotate. The second gear 304 rolls on the second rack 305, thereby driving the drive motor 302 and the lifting frame 301 to move up and down. The drive motor 302 has two output shafts through a dual-output gearbox 306, and the two output shafts are respectively equipped with second gears 304. The two second gears 304 mesh with the second racks 305 on both sides of the lifting frame 301, improving the lifting stability of the lifting frame 301. The support roller 202 is horizontally set on the floor frame 201 and is rotatably connected to the floor frame 201. An annular groove 203 is provided on the side of the support roller 202 to restrict the pipe and prevent it from rolling left and right after being placed on the support roller 202. The cross-section of the annular groove 203 is V-shaped or U-shaped. When the floor frame 201 is designed as a liftable structure, a corresponding locking structure is provided, such as a pin or screw.

[0038] like Figure 6 As shown, in this embodiment, the floor stand 201 is a height-adjustable structure. The floor stand 201 includes a bottom support, a lifting support slidably connected to the bottom support, and a lifting component connected to the bottom support. The lifting end of the lifting component is connected to the lifting support. Telescopic cylinders are provided on both sides of the bottom support. The telescopic ends of the telescopic cylinders are fixedly connected to the lifting support. The lifting is achieved by a trapezoidal screw. After being raised, the trapezoidal screw achieves self-locking. If the self-locking effect of the trapezoidal screw is not good in actual installation, an additional locking structure is provided.

[0039] The remaining working principles and processes of this embodiment are the same as those of Embodiment 1 or Embodiment 2.

[0040] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pipe lifting device, characterized in that, include: A first support (1), a plurality of pipe moving components (2) respectively disposed next to the first support (1), a lifting component (3) connected to the first support (1), and a limiting component (4) disposed on the lifting end of the lifting component (3). The pipe moving component (2) is used to place the pipe and assist the pipe in moving to the limiting component (4). The limiting component (4) includes a second support (401) disposed on the lifting end of the lifting component (3), a moving support (402) slidably connected to the second support (401), an abutment (403) disposed on the moving support (402), and a fixing component (404) respectively connected to the moving support (402). The moving support (402) is disposed on both sides of the second support (401). The abutment (403) is used to abut against the pipe for limiting. The fixing component (404) is used to fix the moving support (402) on the second support (401).

2. The pipe lifting device according to claim 1, characterized in that: The limiting component (4) further includes a first driving component (405) connected to the second bracket (401), a first gear (406) disposed on the driving end of the first driving component (405), and first racks (407) respectively disposed on both sides of the first gear (406). The first gear (406) meshes with the first rack (407), the first rack (407) is slidably connected to the second bracket (401), and the first rack (407) is fixedly connected to the movable bracket (402).

3. The pipe lifting device according to claim 2, characterized in that: The abutment (403) is a cylindrical part and is rotatably connected to the movable support (402). The abutment (403) is inclined as a whole and abuts and supports the lower side of the pipe.

4. A pipe lifting device according to claim 2, characterized in that: The first drive assembly (405) includes a handwheel (4051) and a shaft (4052) rotatably connected to the second bracket (401), a sprocket (4053) respectively disposed on the handwheel (4051) and the shaft (4052), a chain (4054) mounted on the sprocket (4053), and the first gear (406) is fixedly disposed on the shaft (4052).

5. A pipe lifting device according to claim 4, characterized in that: The limiting component (4) further includes a connecting plate (408) connected to the movable bracket (402) and a positioning plate (409) fixedly connected to the second bracket (401). The positioning plate (409) is provided with a plurality of positioning holes (410) set according to different pipe diameters. The fixing member (404) is inserted into the connecting plate (408) and passes through the connecting plate (408) and is inserted into the positioning hole (410) for fixing.

6. A pipe lifting device according to claim 1, characterized in that: The lifting assembly (3) includes a lifting frame (301) that is vertically slidably connected to the first bracket (1), a drive motor (302) connected to the lifting frame (301), a rotating shaft (303) connected to the output shaft of the drive motor (302), a second gear (304) disposed on the rotating shaft (303), and a second rack (305) fixed on the first bracket (1), wherein the second gear (304) meshes with the second rack (305).

7. A pipe lifting device according to claim 6, characterized in that: The lifting assembly (3) also includes a dual-output gearbox (306) connected to the output shaft of the drive motor (302) respectively. The rotating shaft (303) is connected to the two output ends of the dual-output gearbox (306) respectively. The number of the second racks (305) corresponds to the number of the second gears (304) and they are respectively arranged on both sides of the lifting frame (301).

8. A pipe lifting device according to claim 7, characterized in that: The first bracket (1) is provided with lifting components (3) on both sides, and all the lifting components (3) are raised and lowered synchronously.

9. A pipe lifting device according to claim 1, characterized in that: The pipe moving assembly (2) includes a floor frame (201) disposed next to the first support (1) and a support roller (202) rotatably connected to the floor frame (201). The outer side of the support roller (202) is provided with an annular groove (203) for placing the pipe.

10. A pipe lifting device according to claim 9, characterized in that: The floor stand (201) is a fixed structure or a height-adjustable structure.

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