A device for laying underground pipelines in landscaping projects

Abstract

This utility model discloses an underground pipeline laying device for landscaping projects, belonging to the technical field of pipeline laying devices. It includes a lower support plate with a limiting component at its center. Multiple casters are rotatably connected to the lower outer side of the lower support plate, and multiple support rods are connected to the upper outer side of the lower support plate. An upper support plate is connected to the upper ends of the multiple support rods. A height adjustment component is provided at the upper end of the upper support plate, and an angle adjustment pivot is connected to the height adjustment component. An angle adjustment component is provided at the upper end of the angle adjustment pivot, and connecting rods are connected to both the left and right sides of the upper end of the angle adjustment component. This utility model's lifting plate chain can bend and wrap around pipes of different diameters. Fine-tuning balls allow for slight pipe movement, facilitating flange connection, improving laying efficiency, and enhancing equipment versatility. A linkage gear ensures that the two adjustment slide rods move synchronously, keeping the lifting plate chain always centered, preventing pipe center of gravity shift and equipment tipping, and improving operational safety.

Description

Technical Field

[0001] This utility model belongs to the technical field of pipeline laying devices, specifically relating to an underground pipeline laying device for landscaping projects. Background Technology

[0002] In the traditional process of laying underground pipelines in landscaping projects, manual labor is usually used in conjunction with simple supports or hoisting equipment for pipeline transportation and installation, which has many drawbacks.

[0003] First, manual handling and positioning are inefficient, especially during the construction of large-diameter or long-distance pipelines, where the labor intensity is high. Second, existing laying equipment lacks height and angle adjustment functions, requiring repeated adjustments to the equipment position during pipeline connection, which seriously affects construction efficiency. Third, traditional support devices have poor versatility, making it difficult to adapt to the laying needs of pipelines with different diameters, and the fixing method is unreliable, easily causing displacement on soft foundations. In addition, fine-tuning of pipelines is difficult, and flange connection often requires multiple people to cooperate, making it difficult to guarantee installation accuracy.

[0004] To address the aforementioned issues, this patent proposes a specialized pipeline laying device that integrates movement, support, height adjustment, angle adjustment, and fine-tuning functions, thus resolving the problems. Utility Model Content

[0005] The purpose of this utility model is to provide a device for laying underground pipelines in landscaping projects, in order to solve the problems mentioned in the background art, such as the lack of height and angle adjustment functions and fine-tuning functions in traditional landscaping underground pipeline laying equipment, and poor versatility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a device for laying underground pipelines in landscaping projects, comprising a lower support plate, a limiting component at the center of the lower support plate, multiple casters rotatably connected to the outer side of the lower end of the lower support plate, multiple support rods connected to the outer side of the upper end of the lower support plate, an upper support plate connected to the upper ends of the multiple support rods, a height adjustment component provided at the upper end of the upper support plate, and an angle adjustment pivot connected to the height adjustment component, an angle adjustment component provided at the upper end of the angle adjustment pivot, connecting rods connected to the left and right sides of the upper end of the angle adjustment component, a position adjustment component provided at the upper end of the two connecting rods, lifting rods connected to the left and right sides of the upper end of the position adjustment component, lifting slots provided at the upper ends of the two lifting rods, and the two lifting slots are symmetrically arranged, a lifting component is provided between the two lifting slots, and a pipeline is laid inside the lifting component.

[0007] Preferably, the limiting component includes a fixed abutment plate and a ground-inserting cone. A fixed threaded knob is rotatably connected to the center of the lower support plate, and the fixed threaded knob is engaged with the center of the lower support plate. A fixed screw rod passes through the center of the fixed threaded knob from top to bottom and is threadedly connected to the fixed screw rod. The lower end of the fixed screw rod is connected to the fixed abutment plate, and the lower end of the fixed abutment plate is connected to multiple ground-inserting cones.

[0008] Preferably, the height adjustment component includes a height adjustment screw and a height adjustment threaded knob. The height adjustment screw is connected to the center of the lower end of the angle adjustment base, and the lower end of the height adjustment screw passes through the center of the upper support plate and is slidably connected to the limiting slide rod. Multiple limiting slide rods are connected to the outer side of the lower end of the angle adjustment base.

[0009] Preferably, the limiting slide rod passes through the inner and outer sides of the upper support plate and is slidably connected to the limiting slide rod. The height adjustment screw is externally threaded with a height adjustment screw knob, and the height adjustment screw knob is located at the upper end of the upper support plate. The lower end of the height adjustment screw knob is provided with multiple knob balls, and the multiple knob balls are attached to the outer wall of the upper end of the upper support plate.

[0010] Preferably, the angle adjustment assembly includes an angle adjustment ring and an angle adjustment sleeve. The angle adjustment ring is connected to the outer side of the upper end of the angle adjustment base. Multiple resistance-reducing balls are provided inside the upper end of the angle adjustment ring. The angle adjustment sleeve is engaged with the outer side of the angle adjustment ring, and two connecting rods are connected to the left and right sides of the upper end of the angle adjustment sleeve.

[0011] Preferably, a plurality of the resistance-reducing balls are attached to the inner wall of the upper end of the angle-adjusting sleeve, and a locking screw is threadedly connected to the center of the inner end of the angle-adjusting sleeve. A locking plate is connected to the lower end of the locking screw, and a rubber gasket is provided at the lower end of the locking plate, which is tightly attached to the outer wall of the upper end of the angle-adjusting rotary seat through the rubber gasket.

[0012] Preferably, the adjustment assembly includes an adjustment slide rail and an adjustment slide rod. The upper ends of the two connecting rods are connected to the adjustment slide rail, and the adjustment slide rail is located directly above the adjustment sleeve. The upper end of the adjustment slide rail is provided with adjustment grooves on both the front and rear sides, and a gear groove is connected between the two adjustment grooves.

[0013] Preferably, each of the two adjustment slides is slidably connected to an adjustment slide rod, a linkage gear is provided between the two adjustment slide rods and meshes with the linkage gear, and the linkage gear is rotatably connected inside the gear groove, and the two lifting rods are respectively connected to the outer side of the upper end of the two adjustment slide rods.

[0014] Preferably, the lifting assembly includes a lifting plate chain and fine-tuning balls. Multiple lifting plate chains are arranged between the two lifting slots, and the multiple lifting plate chains are connected by a rotating pin and connected to the upper end of the two lifting slots by a rotating shaft. Multiple fine-tuning balls are arranged inside the upper end of each of the multiple lifting plate chains.

[0015] A method for laying underground pipelines in landscaping projects, comprising the following steps:

[0016] Step 1: Lift the pipe. Use a crane to lift the pipe and place multiple laying devices at the bottom of the pipe. Then, use a lifting assembly to insert the pipe into the upper part of the multiple laying devices, thereby lifting the pipe.

[0017] Step 2: Pipe position adjustment. The laying equipment is moved using multiple casters, and the pipe is moved to the installation position. Then, the height and connection angle of the pipe are adjusted using the height adjustment component and the angle adjustment component to align the pipe with the connection position. Finally, the laying equipment is fixed using the limit component.

[0018] Step 3: Install the pipes. Use the lifting assembly to fine-tune the position of the pipes, and rotate the pipes to align the pipe flanges with the flanges at the connection points. Then connect the pipes with bolts. In this way, connect multiple pipes in sequence to complete the pipeline laying.

[0019] Compared with the prior art, this utility model provides a device and method for laying underground pipelines in landscaping projects, which has the following beneficial effects:

[0020] 1. This utility model uses a fixed screw knob to drive the fixed screw to move downward, which in turn drives the fixed abutment and the ground insertion cone to insert into the ground, ensuring the stability of the laying equipment when connecting pipes, preventing displacement, and improving connection accuracy.

[0021] 2. This utility model uses a height adjustment screw and a limit slide rod in combination. Rotating the height adjustment screw knob can accurately adjust the pipe height. The knob ball reduces frictional resistance, making height adjustment smoother and reducing component wear.

[0022] 3. The angle adjustment ring and angle adjustment sleeve of this utility model achieve low-friction rotation through the friction-reducing ball bearing, making the pipe angle adjustment more flexible. The locking screw and rubber gasket fix the angle, ensuring accurate docking and preventing loosening.

[0023] 4. The lifting plate chain of this utility model can be bent to wrap around pipes of different diameters, and the fine-tuning ball allows the pipe to move slightly, which facilitates flange connection, improves laying efficiency and enhances equipment versatility.

[0024] 5. The linkage gear of this utility model ensures that the two adjusting slide bars move synchronously, keeping the lifting plate chain always in the center, preventing the equipment from tipping over due to the shift of the pipeline's center of gravity, and improving operational safety.

[0025] 6. The universal wheels of this utility model facilitate flexible movement of the equipment and can be quickly fixed with the ground anchors, realizing integrated operation of laying, adjustment and locking, reducing construction difficulty and improving efficiency. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the laying device of this utility model.

[0027] Figure 2 This is a three-dimensional cross-sectional structural diagram of the laying device of this utility model.

[0028] Figure 3 This is a schematic diagram of the height adjustment threaded knob connection structure of this utility model.

[0029] Figure 4 This is a schematic diagram of the connecting rod connection structure of this utility model.

[0030] Figure 5 This is a schematic diagram of the lifting component structure of this utility model.

[0031] Figure 6 This is a schematic diagram of the pipe connection structure of this utility model.

[0032] In the diagram: 1. Lower support plate; 2. Caster wheel; 3. Support rod; 4. Upper support plate; 5. Angle adjustment swivel seat; 6. Connecting rod; 7. Lifting rod; 8. Lifting swivel groove; 9. Fixed threaded knob; 10. Fixed screw; 11. Fixed abutment plate; 12. Ground cone; 13. Height adjustment screw; 14. Limiting slide rod; 15. Height adjustment threaded knob; 16. Knob ball; 17. Angle adjustment retaining ring; 18. Resistance reducing ball; 19. Angle adjustment sleeve; 20. Angle locking screw; 21. Angle locking abutment plate; 22. Positioning slide rail; 23. Positioning slide groove; 24. Gear groove; 25. Positioning slide rod; 26. Linkage gear; 27. Lifting plate chain; 28. Fine-tuning ball. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] This utility model provides, for example Figures 1-6The device shown is for laying underground pipelines in landscaping projects. It includes a lower support plate 1 with a limit component at its center. Multiple casters 2 are rotatably connected to the lower outer side of the lower support plate 1. Multiple support rods 3 are connected to the upper outer side of the lower support plate 1. An upper support plate 4 is connected to the upper end of the support rods 3. A height adjustment component is installed on the upper end of the upper support plate 4, and an angle adjustment pivot 5 is connected to the height adjustment component. An angle adjustment component is installed on the upper end of the angle adjustment pivot 5. Connecting rods 6 are connected to the left and right sides of the upper end of the angle adjustment component. Positioning components are installed on the upper ends of the two connecting rods 6. Lifting rods 7 are connected to the left and right sides of the upper end of the positioning components. Lifting slots 8 are formed on the upper ends of the two lifting rods 7, and the two lifting slots 8 are symmetrical. The system is described as follows: a lifting assembly is installed between two lifting troughs 8, and a laying pipe is installed inside the lifting assembly. In landscaping projects, the laying equipment can be used to lay pipes in the garden. The pipes can be lifted by a crane and supported by multiple laying devices, which can be moved by multiple casters 2 to move the pipes to the installation position. The height and connection angle of the pipes can be adjusted by the height adjustment assembly and the angle adjustment assembly to align the pipes with the connection position. After the pipe position is adjusted, it can be fixed by the limit assembly, and fine adjustments can be made during the connection process by the lifting assembly. This makes it easier to adjust and connect the pipes, improves the efficiency of pipe laying, and reduces the difficulty of pipe laying.

[0035] like Figure 2 As shown, the limiting assembly includes a fixed abutment plate 11 and ground-inserting cones 12. A fixed threaded knob 9 is rotatably connected to the center of the lower support plate 1, and the fixed threaded knob 9 is snapped into the center of the lower support plate 1. A fixed screw 10 passes through the center of the fixed threaded knob 9 and is threadedly connected to the fixed screw 10. The lower end of the fixed screw 10 is connected to the fixed abutment plate 11, and the lower end of the fixed abutment plate 11 is connected to multiple ground-inserting cones 12. During the process of fixing the laying equipment, rotating the fixed threaded knob 9 can drive the fixed screw 10 downward through the thread, and the fixed screw 10 can drive the fixed abutment plate 11 and the ground-inserting cones 12 downward through the fixed screw 10, so that the fixed abutment plate 11 is in contact with the ground and the multiple ground-inserting cones 12 are inserted into the ground, thereby fixing the position of the laying equipment, and then fixing the connection position of the pipeline, ensuring the stability of the pipeline connection process.

[0036] like Figure 2 and Figure 3As shown, the height adjustment assembly includes a height adjustment screw 13 and a height adjustment threaded knob 15. The height adjustment screw 13 is connected to the center of the lower end of the angle adjustment rotary seat 5, and the lower end of the screw 13 passes through the center of the upper support plate 4 and is slidably connected to a limiting slide rod 14. Multiple limiting slide rods 14 are connected to the outer side of the lower end of the angle adjustment rotary seat 5, and these limit slide rods 14 pass through the outer side of the upper support plate 4 and are slidably connected to the limiting slide rods 14. The height adjustment screw 13 is externally threaded with a height adjustment threaded knob 15, which is located at the upper end of the upper support plate 4. Multiple knob balls 16 are provided inside the lower end of the height adjustment threaded knob 15, and these knob balls 16 are attached to the outer wall of the upper end of the upper support plate 4. During the adjustment of the pipe connection height, the height adjustment is adjusted according to the relative height of the pipe and the connection position. Rotating the height adjustment screw knob 15 causes the height adjustment screw 13 to move up and down via its thread. Multiple limit slides 14 restrict the position between the upper support plate 4 and the angle adjustment knob 5, ensuring the screw 13 can only move up and down without rotating. This allows the height adjustment screw 13 to be adjusted by its vertical movement relative to the angle adjustment knob 5, thereby adjusting the pipe connection height. Furthermore, the height adjustment screw knob 15 is in contact with the upper outer wall of the upper support plate 4 via multiple knob balls 16, and can rotate on the upper support plate 4 via these balls. This reduces the rotational resistance between the upper support plate 4 and the height adjustment screw knob 15, ensuring smooth rotation and minimizing wear between them.

[0037] like Figure 2 and Figure 4 As shown, the angle adjustment assembly includes an angle adjustment ring 17 and an angle adjustment sleeve 19. The angle adjustment ring 17 is connected to the outer side of the upper end of the angle adjustment rotary seat 5. Multiple resistance-reducing balls 18 are provided inside the upper end of the angle adjustment ring 17. The angle adjustment sleeve 19 is snapped onto the outside of the angle adjustment ring 17, and two connecting rods 6 are connected to the left and right sides of the upper end of the angle adjustment sleeve 19. The multiple resistance-reducing balls 18 are attached to the inner wall of the upper end of the angle adjustment sleeve 19. A locking screw 20 is threaded to the center of the inner end of the angle adjustment sleeve 19. A locking plate 21 is connected to the lower end of the locking screw 20, and a rubber gasket is provided at the lower end of the locking plate 21. The locking plate 21 is tightly attached to the outer wall of the upper end of the angle adjustment rotary seat 5 through the rubber gasket. During the adjustment of the connection angle of the pipeline, the laying equipment can move on the ground via multiple casters 2, and can also adjust the connection angle with the pipeline by rotating between the angle adjustment ring 17 and the angle adjustment sleeve 19. When the pipeline's turning angle is different from the laying equipment's moving angle, the angle adjustment sleeve 19 can adjust the difference between the turning angle and the moving angle by rotating the upper outer part of the angle adjustment ring 17 and rotating the multiple casters 2 at the lower end of the lower support plate 1. This allows the laying equipment to move in any direction without affecting the pipeline's angle adjustment, ensuring that the laying equipment can quickly adjust the pipeline's connection angle and improve laying efficiency.

[0038] Furthermore, the angle adjustment sleeve 19 can rotate smoothly on the outside of the upper end of the angle adjustment ring 17 through multiple resistance-reducing balls 18, reducing the rotational resistance between the angle adjustment ring 17 and the angle adjustment sleeve 19, ensuring that the angle adjustment sleeve 19 can rotate smoothly, and reducing the wear between the angle adjustment ring 17 and the angle adjustment sleeve 19. After the pipe connection angle is adjusted, the angle locking screw 20 can be rotated to allow the angle locking plate 21 to fit tightly against the upper end of the angle adjustment rotary seat 5 through the rubber gasket, fixing the position of the angle adjustment rotary seat 5 and the angle adjustment sleeve 19, preventing the angle adjustment sleeve 19 from rotating again, and ensuring that the pipe can be accurately connected to the connection position.

[0039] like Figure 5 and Figure 6 As shown, the lifting assembly includes lifting plate chains 27 and fine-tuning balls 28. Multiple lifting plate chains 27 are arranged between two lifting slots 8, and these chains are connected by pivot pins and connected to the upper ends of the two lifting slots 8 via a rotating shaft. Multiple fine-tuning balls 28 are arranged inside the upper ends of each lifting plate chain 27. During the lifting process, the lifting plates 27 are first straightened by the lifting rods 7 on both sides. Then, the pipe is placed on the upper ends of the lifting plates 27 by a crane. Because the multiple lifting chains 27 are connected by pivot pins and connected to the lifting rods 7 on both sides via a rotating shaft and the lifting slots 8, and the two lifting rods 7 can... Position adjustment is achieved through the positioning component. Therefore, when the pipe is placed on top of multiple lifting plate chains 27, the multiple lifting plate chains 27 will bend downwards under the pressure of the pipe and tightly wrap around the outside of the pipe. This allows the pipe to be limited between the two lifting rods 7 by the multiple lifting plate chains 27, thereby limiting the pipe at the top of the laying equipment. Moreover, the multiple lifting plate chains 27 can limit the pipe with different degrees of curvature, enabling the multiple lifting plate chains 27 to limit pipes of different diameters. This allows the laying equipment to lay pipes of different diameters, improving the versatility of the laying equipment. At the same time, the two lifting rods 7 are brought closer together in the middle to accommodate the deformation of the multiple lifting plate chains 27 as a whole.

[0040] The lifting plate chain 27 can fit against the outer wall of the pipe through multiple fine-tuning balls 28 inside the upper end, and the fine-tuning balls 28 can roll inside the lifting plate chain 27, so that the pipe can move back and forth and rotate inside the multiple lifting plate chains 27 through the fine-tuning balls 28, allowing the pipe to be finely adjusted at the upper end of the laying equipment in order to adjust the flange connection with the connection position.

[0041] like Figure 4 and Figure 5As shown, the adjustment assembly includes an adjustment slide rail 22 and an adjustment slide rod 25. The upper ends of two connecting rods 6 are connected to the adjustment slide rail 22, which is located directly above the adjustment sleeve 19. Adjustment grooves 23 are provided on both the front and rear sides of the upper end of the adjustment slide rail 22. A gear groove 24 connects the two adjustment grooves 23 in the middle. Adjustment slide rods 25 are slidably connected inside each of the two adjustment grooves 23. A linkage gear 26 is provided between the two adjustment slide rods 25, and the adjustment slide rods 25 mesh with the linkage gear 26, which is rotatably connected inside the gear groove 24. Two lifting rods 7 are respectively connected to the outer upper ends of the two adjustment slide rods 25. As the lifting plate chain 27 bends downwards, the two lifting rods 7 move towards the center under the pull of the multiple lifting plate chains 27, and drive the two adjusting slide rods 25 to slide inside the two adjusting slide grooves 23. At this time, since the two adjusting slide rods 25 are meshed with the linkage gear 26, the two adjusting slide rods 25 can move towards the center at the same distance, so that the multiple lifting plate chains 27 are always above the middle position of the upper end of the adjusting slide rail 22, so that the pipeline is always directly above the laying equipment, avoiding the pipeline's center of gravity shifting and causing the laying equipment to tip over, improving the lifting stability of the laying equipment, and improving the safety of pipeline laying.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for laying underground pipelines in landscaping projects, characterized in that, The system includes a lower support plate (1), a limit assembly is provided at the center of the lower support plate (1), multiple casters (2) are rotatably connected to the outer side of the lower end of the lower support plate (1), multiple support rods (3) are connected to the outer side of the upper end of the lower support plate (1), an upper support plate (4) is connected to the upper end of the multiple support rods (3), a height adjustment assembly is provided at the upper end of the upper support plate (4), and an angle adjustment swivel (5) is connected through the height adjustment assembly. An angle adjustment assembly is provided at the upper end of the angle adjustment swivel (5), a connecting rod (6) is connected to the left and right sides of the upper end of the angle adjustment assembly, an adjustment assembly is provided at the upper end of the two connecting rods (6), a lifting rod (7) is connected to the left and right sides of the upper end of the adjustment assembly, a lifting groove (8) is opened at the upper end of the two lifting rods (7), and the two lifting grooves (8) are symmetrically arranged on the left and right sides, a lifting assembly is provided between the two lifting grooves (8), and a laying pipe is provided inside the lifting assembly.

2. The underground pipeline laying device for landscaping projects as described in claim 1, characterized in that, The limiting component includes a fixed abutment plate (11) and a ground-inserting cone (12). A fixed threaded knob (9) is rotatably connected to the center of the lower support plate (1), and the fixed threaded knob (9) is snapped into the center of the lower support plate (1). A fixed screw (10) runs vertically through the center of the fixed threaded knob (9) and is threadedly connected to the fixed screw (10). The lower end of the fixed screw (10) is connected to the fixed abutment plate (11), and the lower end of the fixed abutment plate (11) is connected to multiple ground-inserting cones (12).

3. The underground pipeline laying device for landscaping projects as described in claim 1, characterized in that, The height adjustment assembly includes a height adjustment screw (13) and a height adjustment threaded knob (15). The lower center of the angle adjustment rotary seat (5) is connected to the height adjustment screw (13), and the lower end of the height adjustment screw (13) passes through the center of the upper support plate (4) and is slidably connected to the limiting slide rod (14). Multiple limiting slide rods (14) are connected to the outer side of the lower end of the angle adjustment rotary seat (5).

4. The device for laying underground pipelines in landscaping engineering according to claim 3, characterized in that, The limiting slide rod (14) passes through the inner and outer sides of the upper support plate (4) and is slidably connected to the limiting slide rod (14). The height adjustment screw (13) is externally threaded with a height adjustment screw knob (15), and the height adjustment screw knob (15) is located at the upper end of the upper support plate (4). The lower end of the height adjustment screw knob (15) is provided with multiple knob balls (16), and the multiple knob balls (16) are attached to the upper outer wall of the upper support plate (4).

5. The device for laying underground pipelines in landscaping engineering according to claim 1, characterized in that, The angle adjustment assembly includes an angle adjustment ring (17) and an angle adjustment sleeve (19). The angle adjustment ring (17) is connected to the outer side of the upper end of the angle adjustment rotating base (5). Multiple resistance-reducing balls (18) are provided inside the upper end of the angle adjustment ring (17). The angle adjustment sleeve (19) is snapped onto the outside of the angle adjustment ring (17), and two connecting rods (6) are connected to the left and right sides of the upper end of the angle adjustment sleeve (19).

6. The device for laying underground pipelines in landscaping engineering according to claim 5, characterized in that, Multiple resistance-reducing balls (18) are attached to the inner wall of the upper end of the angle adjustment sleeve (19). The center of the angle adjustment sleeve (19) is threaded with a locking screw (20). The lower end of the locking screw (20) is connected to a locking plate (21), and a rubber pad is provided at the lower end of the locking plate (21). The rubber pad is tightly attached to the outer wall of the upper end of the angle adjustment turntable (5).

7. The device for laying underground pipelines in landscaping engineering according to claim 1, characterized in that, The adjustment assembly includes an adjustment slide rail (22) and an adjustment slide rod (25). The upper ends of the two connecting rods (6) are connected to the adjustment slide rail (22), and the adjustment slide rail (22) is located directly above the adjustment sleeve (19). The upper end of the adjustment slide rail (22) is provided with adjustment grooves (23) on both the front and rear sides. A gear groove (24) is connected between the two adjustment grooves (23).

8. The underground pipeline laying device for landscaping projects as described in claim 7, characterized in that, Both of the two adjustment slides (23) are slidably connected with adjustment slide rods (25), and a linkage gear (26) is provided between the two adjustment slide rods (25) and meshes with the linkage gear (26). The linkage gear (26) is rotatably connected inside the gear groove (24), and the two lifting rods (7) are respectively connected to the outer side of the upper end of the two adjustment slide rods (25).

9. The device for laying underground pipelines in landscaping engineering according to claim 1, characterized in that, The lifting assembly includes a lifting plate chain (27) and fine-tuning balls (28). Multiple lifting plate chains (27) are arranged between the two lifting slots (8), and the multiple lifting plate chains (27) are connected by a rotating pin and connected to the upper end of the two lifting slots (8) by a rotating shaft. Multiple fine-tuning balls (28) are arranged inside the upper end of the multiple lifting plate chains (27).

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