A pipe in-place control device

Abstract

The application relates to a pipeline in-place control device and relates to the technical field of pipeline installation construction, which comprises a base for being installed on a pipeline foundation, a height adjusting mechanism arranged on the base, and an inclined surface positioning table connected to the height adjusting mechanism, wherein the height adjusting mechanism is used for driving the inclined surface positioning table to perform lifting movement, so that the inclined surface positioning table receives and positions a pipeline with the inclined surface thereof; and a centering mark is arranged on the base and used for being aligned with a preset auxiliary line on the pipeline foundation during installation. The pipeline in-place measurement and temporary positioning functions are integrated in the application, different pipe diameters are adapted through the height adjusting mechanism, and the centering mark is matched with the preset reference line to realize rapid positioning. When the pipeline is hoisted and falls, the outer wall of the pipeline naturally adheres to the inclined surface, the designed position can be automatically reached and effectively constrained, the low-efficiency operation mode of traditional repeated measurement can be replaced, and the efficiency, accuracy and safety of large-diameter pipeline installation are improved.

Description

Technical Field

[0001] This application relates to the field of pipeline installation and construction technology, and in particular to a pipeline positioning control device. Background Technology

[0002] In the construction of municipal water supply and drainage, heating, and power utility tunnel projects, the laying and installation of large-diameter pipes (usually referring to concrete pipes, steel pipes, etc. with a diameter of 1.6 meters or more) is a critical construction step. These pipes are characterized by their large weight, high inertia, and high positioning accuracy requirements, and the efficiency and quality of their installation directly affect the overall project progress and safety.

[0003] Currently, the positioning control of large-diameter pipelines on construction sites mainly relies on two traditional measurement methods: The first is the center measurement method, which involves repeatedly measuring the pipeline end face with a steel ruler to approximate the center, and then suspending a plumb line to compare with the design center line to guide the pipeline movement. This method requires multiple rolls of the pipeline for correction, is cumbersome, and finding the center point of large-diameter pipelines is difficult, resulting in low efficiency, long processing time, and high dependence on personnel experience. The second is the edge measurement method, which involves laying out auxiliary lines on-site at a radius offset from the pipeline centerline, and aligning the plumb line with the auxiliary lines by observing the relative position of the pipeline's outer wall. While simpler than the center measurement method, this is a passive measurement approach. The pipeline is prone to rolling or shifting during adjustment, leading to repeated line crossings, and cannot provide effective active limiting, resulting in insufficient control accuracy and stability.

[0004] Therefore, there is an urgent need in this field for a dedicated positioning control device that integrates rapid measurement and reliable positioning, has a reasonable structure, and is easy to operate. Utility Model Content

[0005] To address the problems of frequent manual measurement and adjustment, and low efficiency in pipeline positioning, this application provides a pipeline positioning control device.

[0006] The pipeline positioning control device provided in this application adopts the following technical solution: A pipeline positioning control device, comprising: Base, used for installation on pipe foundations; A height adjustment mechanism is provided on the base; An inclined positioning platform is connected to the height adjustment mechanism, which drives the inclined positioning platform to move up and down, so that the inclined positioning platform receives and limits the pipe with its inclined surface. The base is provided with a centering mark for alignment with a preset auxiliary line on the pipe foundation during installation.

[0007] By adopting the above technical solution, the device integrates pipeline positioning measurement and temporary limiting functions. It adapts to different pipe diameters through a height adjustment mechanism and achieves rapid positioning by cooperating with the centering mark and preset baseline. When the pipeline is hoisted and lowered, its outer wall naturally fits the inclined surface, which can automatically reach the design position and be effectively constrained. It can replace the inefficient operation mode of traditional repeated measurement and fine adjustment, thereby improving the efficiency, accuracy and safety of large-diameter pipeline installation.

[0008] In one specific implementation scheme, the preset auxiliary line is a positioning auxiliary line that is half a radius away from the pipeline design center line, and the preset auxiliary line is set parallel to the pipeline design center line.

[0009] By adopting the above technical solution, the centering reference of the device is transformed from the pipe center, which is difficult to locate directly, into the pipe edge offset line (R / 2 preset auxiliary line), which is easy to lay out and identify. This makes on-site construction layout simpler and more intuitive, and establishes an accurate and repeatable mathematical correspondence between the device and the pipe, ensuring the accuracy of the placement of pipes of different diameters.

[0010] In one specific implementation, the angle between the inclined plane of the inclined positioning platform and the horizontal plane is 30°.

[0011] By adopting the above technical solution, by fixing the slope angle of an inclined positioning platform to 30°, and making it form a definite geometric relationship with another R / 2 preset auxiliary line, a professional technical work that requires complex measurement and calculation is simplified into a standardized, streamlined, and easy-to-operate mechanical installation process.

[0012] In one specific implementation, the base includes a base plate and a bottom box fixed to the base plate; the centering mark is a scribed line provided on the base plate.

[0013] By adopting the above technical solution, the base plate provides stable support, the bottom box structure enhances the overall rigidity and stability, and the engraved lines serve as clear and intuitive centering marks, making it easy for operators to quickly and accurately align the device with the auxiliary lines on the ground, thereby simplifying the installation process.

[0014] In one specific implementation, the height adjustment mechanism includes a fixed plate, an adjusting plate, and an adjusting member. The fixed plate is located on both sides of the base box, and the adjusting plate is located on both sides of the inclined positioning platform. The fixed plate and the adjusting plate are connected by the adjusting member, which can drive the adjusting plate to rise and fall.

[0015] By adopting the above technical solution and using a symmetrical frame structure, the fixed plate provides a stable support reaction point, and the adjusting plate smoothly transmits the lifting motion to the inclined positioning platform. This dual-sided synchronous drive can ensure that the inclined positioning platform is subjected to balanced forces during the lifting process, thereby ensuring the reliability of height adjustment.

[0016] In one specific implementation, the adjusting component includes an adjusting screw and adjusting nuts. One end of the adjusting screw is fixedly connected to the adjusting plate, and the other end extends out of the fixed plate. Two adjusting nuts are threaded onto the adjusting screw, and the two adjusting nuts abut against opposite sides of the fixed plate.

[0017] By adopting the above technical solution, the self-locking characteristics of the threaded pair are used to achieve fine adjustment and reliable locking; by rotating the adjusting screw, the lifting distance of the adjusting plate can be controlled, and two adjusting nuts are used to clamp and lock from both sides of the fixed plate. The structure is simple, the locking force is large and reliable, and the stability of the positioning height is ensured.

[0018] In one specific implementation, the adjusting component includes a hydraulic cylinder and a lifting rod. The cylinder body end of the hydraulic cylinder is fixed to the base plate, the piston rod end of the hydraulic cylinder passes through the fixed plate and is connected to one end of the lifting rod, and the other end of the lifting rod is connected to the adjusting plate.

[0019] By adopting the above technical solution, a more powerful height adjustment method is provided. The hydraulic drive can output huge lifting force, which can be applied to the positioning of heavy pipelines, thereby expanding the applicability of the device and enabling it to cope with more demanding construction conditions.

[0020] In one specific implementation, a guide rod is also included, one end of which is fixed to the fixed plate, and the other end extends through the adjusting plate and along its moving direction, the guide rod being slidably connected to the adjusting plate.

[0021] By adopting the above technical solution, the guide rod provides accurate vertical guidance for the lifting and lowering movement of the adjustment plate and the inclined positioning platform, preventing any form of deviation, twisting or shaking during lifting or load-bearing, and further enhancing the stability of the device's adjustment and operation.

[0022] In one specific implementation, the inclined surface of the inclined positioning platform is provided with an anti-slip structure.

[0023] By adopting the above technical solutions, the anti-slip structure can generate greater static friction, enhance the temporary limiting ability of the device, effectively prevent the pipeline from rolling or slipping due to external forces or minor vibrations, and ensure the stability of the pipeline in subsequent construction stages.

[0024] In one specific implementation, the interior of the base box is hollow to form a receiving cavity, which is used to accommodate at least a portion of the structure when the inclined positioning platform descends.

[0025] By adopting the above technical solution, the design of the accommodating cavity allows the inclined positioning platform to descend to a lower height when not in use or during transportation, or even be completely embedded in the bottom box, thereby reducing the storage volume of the device and making its structure more compact.

[0026] In summary, the beneficial technical effects of this application are as follows: by combining the base with the inclined positioning platform and using a height adjustment mechanism, the working height of the device can be accurately and steplessly adjusted; this height adjustment mechanism is based on the deterministic geometric relationship formed by the 30° inclined plane and the R / 2 preset auxiliary line, and through a simple standardized height adjustment operation, it can ensure that the center of the pipe falls on the design center line; moreover, the height adjustment accuracy of the control device is high, and it can be adapted to the installation of various pipe diameters within the range of 1.6 meters to 2.2 meters, breaking through the limitation of traditional tooling for dedicated pipes, with a wide range of applications and excellent versatility and adaptability; Meanwhile, the device has a simple and compact overall structure, and the intuitive engraving alignment and easy height adjustment process make it extremely convenient to operate. Construction personnel can use the device to quickly complete pipeline positioning and limiting work, reducing reliance on personnel experience and replacing the inefficient operation mode of traditional repeated measurement and fine adjustment, thereby improving construction efficiency and safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the pipeline positioning control device in Example 1.

[0028] Figure 2 It is a schematic diagram used to show the positional relationship between the pipeline positioning control device, the pipeline, and the pipeline foundation.

[0029] Figure 3 This is a schematic diagram used to illustrate the structure of the height adjustment mechanism.

[0030] Figure 4 This is a schematic diagram of the pipeline positioning control device in Embodiment 2.

[0031] Figure 5 This is a schematic diagram of the pipeline positioning control device in Example 3.

[0032] Explanation of reference numerals in the attached drawings: 1. Base; 11. Base plate; 12. Base box; 2. Height adjustment mechanism; 21. Fixing plate; 22. Adjusting plate; 23. Adjusting component; 231. Adjusting screw; 232. Adjusting nut; 233. Hydraulic cylinder; 234. Lifting rod; 3. Inclined positioning platform; 31. Inclined surface; 4. Guide rod; 5. Scribe line; 6. Pipe; 7. Pipe foundation; 8. Pipe positioning control device. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0034] Example 1 This application discloses a pipeline positioning control device, mainly used for the installation and positioning of large-diameter pipelines in municipal and water conservancy projects. Large-diameter pipelines typically refer to concrete pipes, steel pipes, etc., with a diameter of 1.6 meters or more. In actual use, the pipeline positioning control device is symmetrically installed on both sides of the pipeline foundation to guide, receive, and limit the installation position of the pipeline.

[0035] Reference Figure 1-3 The pipeline positioning control device 8 includes: Base 1 serves as the supporting foundation for the entire device and is used for installation on pipe foundation 7; Height adjustment mechanism 2 is mounted on base 1; The inclined positioning platform 3 is connected to the height adjustment mechanism 2. The height adjustment mechanism 2 is used to drive the inclined positioning platform 3 to move up and down, so that the inclined positioning platform 3 can receive and limit the pipe 6 with its inclined surface 31. The base 1 is equipped with a centering mark for alignment with the preset auxiliary line on the pipe foundation 7 during installation; In use, first, according to the radius of the pipe 6 to be installed, operate the height adjustment mechanism 2 to raise and lower the inclined positioning platform 3 to the predetermined height; then, place the base 1 on the pipe foundation 7, and align it with the preset auxiliary line by centering mark to complete the positioning of the device; then, hoist the pipe 6 so that its outer wall naturally slides down and stably fits on the inclined surface 31 of the inclined positioning platform 3 to complete the installation of the pipe 6.

[0036] The base 1 includes a base plate 11 and a bottom box 12 disposed on the base plate 11. The base plate 11 is used to be fixedly installed on the pipe foundation 7. In this embodiment, the bottom box 12 is not limited to being fixed to the base plate 11 by welding. The base plate 11 may be made of rectangular steel plate. The base plate 11 includes, but is not limited to, a box structure made of steel plate welded together. The centering mark on the base 1 is a etched line 5 formed at the center of the side of the base plate 11. The etched line 5 is set in the vertical direction and is used to align with the preset auxiliary line on the pipe foundation 7. The preset auxiliary line on the pipe foundation 7 is a positioning auxiliary line that is half a radius away from the design center line of the pipe 6 (i.e., R / 2 of the pipe 6), and the preset auxiliary line is set parallel to the design center line of the pipe 6.

[0037] In this embodiment, to ensure the accurate placement of the pipeline 6, a layout can be first carried out on the pipeline foundation 7. Construction personnel use measuring instruments (such as total station and theodolite) to locate the design center line of the pipeline 6. This line is a vertical line in space, and its horizontal projection is the design position line of the center of the pipeline 6. Then, parallel to the design center line, a preset auxiliary line is laid out by offsetting half the radius of the pipeline 6 (i.e., R / 2) to one side of the pipeline 6 installation area. This preset auxiliary line serves as a reference for the installation and positioning of the device. Its position is clear and easy to identify and track on site. In actual operation, by aligning the engraved line 5 (centering mark) on the base plate 11 of the device base 1 with the preset auxiliary line of the pipe foundation 7, the device itself can be quickly and accurately fixed in the correct position, thereby providing a reliable spatial positioning reference for the subsequent hoisting and positioning of the pipe 6. This method transforms the invisible center positioning problem into a visible edge line alignment operation, simplifying the preliminary preparation work.

[0038] In this embodiment, the inclined positioning platform 3 is the core working component that directly contacts the pipe 6. The angle between its inclined surface 31 and the horizontal plane is designed and manufactured to be limited to 30°. The selection of this specific angle is not empirical or arbitrary, but based on a precise and reproducible geometric principle, which is combined with a preset auxiliary line that is half the radius (R / 2) of the pipe 6 at a distance from the design center line of the pipe 6. Reference Figure 2 When the outer wall of pipe 6 is tangent to the 30° inclined plane 31 and finally stabilizes in place, a right triangle is formed with the center (O) of pipe 6, the point of tangency (N) between pipe 6 and inclined plane 31, and the projection point (M) of the point of tangency (N) on the vertical line (i.e. the design center line) of the center (O) as the three vertices. Determine the known sides and angles: Hypotenuse ON = pipe radius R; ∠MON = 30° (because the angle of inclined plane 31 is 30°, and the radius ON is perpendicular to inclined plane 31, so this angle is equal to the angle of inclined plane 31), opposite side MN = R / 2 (because point N is the projection point of the centering mark on inclined plane 31, this point is on the R / 2 auxiliary line, and the center O of pipe 6 is on the design center line, so the horizontal distance from the center O to the centering mark is R / 2); Derivation: In right triangle OMN, we need to find the adjacent side OM, that is, the perpendicular distance from the center O to the point of tangency N of (pipe 6 and inclined plane 31); According to the Law of Cosines: cos(30°) = adjacent side / hypotenuse = OM / R. Since cos(30°) = √3 / 2, therefore: OM = R × cos(30°) = (√3 / 2) × R; Solving for the device height H: The device needs to be set to a height H, which is the height from the tangent point N to the pipe foundation 7. As shown in the figure, the height from the center O of pipe 6 to the pipe foundation 7 is R. Therefore, H = R - OM = R - (√3 / 2) × R = R × (1 - √3 / 2).

[0039] In practical use, no matter how the radius R of the pipe 6 to be installed changes, as long as the rule of adjusting the height H of the device to R×(1-√3 / 2) is followed, it can be guaranteed that when the outer wall of the pipe 6 is tangent to the inclined plane 31, its center will fall accurately on the design center line, thus realizing the standardization and universality of the device.

[0040] The height adjustment mechanism 2 is used to adjust the working height of the inclined positioning platform 3 to accommodate different pipe diameters. In this embodiment, the height adjustment mechanism 2 includes a fixed plate 21, an adjusting plate 22, and an adjusting component 23. The fixed plate 21 is symmetrically arranged on both sides of the base box 12, and the adjusting plate 22 is arranged on both sides of the symmetrical inclined positioning platform 3. In this embodiment, the fixed plate 21 and the adjusting plate 22 can be fixed to the base box 12 and the inclined positioning platform 3 by welding. The fixed plate 21 and the adjusting plate 22 are connected by the adjusting component 23, and the adjusting component 23 can drive the adjusting plate 22 to rise and fall. The adjusting component 23 includes an adjusting screw 231 and adjusting nuts 232. One end of the adjusting screw 231 is fixedly connected to the adjusting plate 22, and the other end extends out of the fixing plate 21. Two adjusting nuts 232 are threadedly connected to the adjusting screw 231, and the two adjusting nuts 232 abut against opposite sides of the fixing plate 21 respectively. When the height of the device needs to be adjusted, loosen the two adjusting nuts 232 and move the adjusting screw 231 vertically. The movement of the adjusting screw 231 drives the adjustment plate 22 to move, thereby moving the inclined positioning platform 3. When it moves to the preset height, tighten the two adjusting nuts 232. At this time, the two adjusting nuts 232 abut against the opposite sides of the fixed plate 21, forming a strong bidirectional locking force, which can prevent loosening under the huge lateral force of the pipe 6 being in place and ensure the stability of the height.

[0041] The implementation principle of this embodiment: Before starting work, use measuring instruments to measure the design center line of pipe 6 and mark it with ink lines on pipe foundation 7. Then, parallel to the design center line, offset by half the radius R of the pipe 6 to be installed to both sides of the installation area of ​​pipe 6, measure two positioning auxiliary lines respectively, and mark them clearly. These two R / 2 auxiliary lines are the reference lines for subsequent installation of the device. Based on the design radius R of the pipe 6 to be installed, the preset height H to which the inclined positioning platform 3 needs to be raised is calculated. Then, the height is adjusted. The operator uses a wrench to simultaneously loosen the two adjusting nuts 232 on both sides of the adjusting screw 231, and then moves the adjusting screw 231 to drive the adjusting plate 22 and move the inclined positioning platform 3 connected to it smoothly. When the highest point of the inclined surface 31 of the inclined positioning platform 3 reaches the preset height, the rotation stops. Finally, the adjusting nuts 232 are tightened. The two adjusting nuts 232 abut against the opposite sides of the fixed plate 21, forming a strong bidirectional locking force, thus completing the height adjustment.

[0042] During operation, the pre-set height pipe positioning control device 8 is moved to the installation position of pipe 6 and symmetrically arranged on both sides of the design center line of pipe 6; the base plate 11 of the device is placed stably on the pipe foundation 7; then, the position of the device is finely adjusted so that the engraved line 5 on the side of the base plate 11 is completely aligned with the pre-laid R / 2 pre-set auxiliary line on the ground. Alignment can be checked visually or with the aid of a thin ruler to ensure centering accuracy; at this point, the device itself has been precisely positioned. Start the hoisting equipment, slowly lift the pipe 6 and move it above the installation position, then slowly lower it. When the outer wall of the lowered pipe 6 is about to contact the inclined positioning platform 3, the crane makes a slight adjustment so that the pipe 6 gently moves towards the inclined surface 31. Under its own weight, the pipe 6 will slide down the inclined surface 31 of the inclined positioning platform 3 and automatically guide itself until its outer wall is completely and stably attached to the inclined surface 31. At this moment, the center of the pipe 6 is automatically and accurately located on the design center line, completing the installation of the pipe 6.

[0043] The pipeline positioning control device disclosed in this application achieves accurate and stepless adjustment of the device's working height through an innovative combination of the base 1 and the inclined positioning platform 3, and by using adjusting bolts to drive the inclined positioning platform 3 to rise and fall. The height adjustment mechanism 2 is based on the deterministic geometric relationship formed by the 30° inclined plane 31 and the preset auxiliary line R / 2. Through a simple standardized operation of adjusting the height to R×(1-√3 / 2) and centering the R / 2 line, it can ensure that the center of the pipeline 6 falls precisely on the design center line. This adjustment method has high precision and reliable locking, and can be adapted to the installation of pipelines 6 with various diameters ranging from 1.6 meters to 2.2 meters. It has a wide range of applications and excellent versatility and adaptability. Meanwhile, the device has a simple and compact overall structure, low manufacturing cost, and is sturdy and durable. The operation process is intuitive and simple, and construction personnel can quickly master and use the device to complete the pipeline positioning work without complicated training, reducing the dependence on personnel experience and improving construction efficiency, resulting in significant overall economic benefits.

[0044] Example 2 Reference Figure 4The difference between this embodiment and embodiment 1 is that the adjusting component 23 includes a hydraulic cylinder 233 and a lifting rod 234. The cylinder body end of the hydraulic cylinder 233 is fixed on the base plate 11 of the base 1 to ensure that it is stable and does not shake. The piston rod end of the hydraulic cylinder 233 extends vertically upward, passes through a specially opened through hole on the fixing plate 21, and is fixedly connected to the lower end of the lifting rod 234. The upper end of the lifting rod 234 is fixedly connected to the lower surface of the adjusting plate 22.

[0045] When the height of the device needs to be adjusted, the operator supplies oil to the hydraulic cylinder 233 through an external manual or electric hydraulic pump, pushing the piston rod to extend upward or descend; the linear movement of the piston rod is directly transmitted to the adjusting plate 22 through the lifting rod 234, thereby driving the entire inclined positioning platform 3 to rise or fall smoothly, thus realizing the height adjustment of the device. In actual use, the hydraulic drive can provide huge lifting force, and the adjustment process is labor-saving, smooth and efficient, which enables this device to easily cope with the positioning conditions of ultra-heavy and ultra-large diameter pipes, thereby expanding the load application range of this device and making it applicable to more demanding construction environments (such as the installation of heavy steel pipes).

[0046] Example 3 Reference Figure 5 The difference between this embodiment and embodiment 1 is that the pipeline positioning control device also includes guide rods 4. There are two guide rods 4, which are symmetrically arranged on opposite sides of the inclined positioning platform 3. The lower end of the guide rod 4 is fixedly connected to the fixing plate 21, and the upper end of the guide rod 4 passes through the adjusting plate 22 and extends upward. The guide rod 4 is slidably connected to the adjusting plate 22.

[0047] When the inclined plane positioning platform 3 is driven to rise and fall, the guide rod 4 can constrain the movement trajectory of the adjustment plate 22 (i.e., the inclined plane positioning platform 3), restricting its degree of freedom to the vertical direction, eliminating horizontal deviation or shaking that may be caused by lateral force or installation gap during the lifting process, and further enhancing the stability of the device adjustment and operation.

[0048] Example 4 The overall structure of this embodiment is roughly the same as that of Embodiment 1. For specific details, please refer to [the embodiment]. Figure 1 The difference between this embodiment and embodiment 1 is that the bottom box 12 is hollow to form a receiving cavity (not shown in the figure), which is used to accommodate at least a part of the structure when the inclined positioning platform 3 descends. In non-working state, the design of the accommodating cavity enables compact storage of the device, reduces the overall height and center of gravity of the device, makes its structure more compact, facilitates handling, stacking and transportation in narrow construction sites, and also avoids damage to the protruding inclined positioning platform 3 during handling.

[0049] Example 5 The overall structure of this embodiment is roughly the same as that of Embodiment 1. For specific details, please refer to [the embodiment]. Figure 1 The difference between this embodiment and embodiment 1 is that the inclined surface 31 of the inclined positioning platform 3 is provided with an anti-slip structure (not shown in the figure). The anti-slip structure can be a transverse anti-slip texture formed by mechanical processing, or a wear-resistant anti-slip coating attached by thermal spraying, inlaying or other methods.

[0050] Once pipe 6 is in place and fitted, the anti-slip structure generates greater friction, enhancing the temporary limiting ability of the device and preventing pipe 6 from rolling or slipping due to external forces or minor vibrations. This ensures the stability of pipe 6 in subsequent construction phases and enhances the safety of the construction process.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pipeline positioning control device, characterized in that: include: Base (1), used for installation on the foundation of pipe (6); A height adjustment mechanism (2) is provided on the base (1); An inclined positioning platform (3) is connected to the height adjustment mechanism (2). The height adjustment mechanism (2) is used to drive the inclined positioning platform (3) to move up and down, so that the inclined positioning platform (3) receives and limits the pipe (6) with its inclined surface (31). The base (1) is provided with a centering mark for alignment with a preset auxiliary line on the base of the pipe (6) during installation.

2. The pipeline positioning control device according to claim 1, characterized in that: The preset auxiliary line is a positioning auxiliary line that is half a radius away from the design center line of the pipeline (6), and the preset auxiliary line is set parallel to the design center line of the pipeline (6).

3. The pipeline positioning control device according to claim 2, characterized in that: The angle between the inclined plane (31) of the inclined positioning platform (3) and the horizontal plane is 30°.

4. The pipeline positioning control device according to claim 1, characterized in that: The base (1) includes a base plate (11) and a base box (12) fixed on the base plate (11); the centering mark is a scribe line (5) set on the base plate (11).

5. The pipeline positioning control device according to claim 4, characterized in that: The height adjustment mechanism (2) includes a fixed plate (21), an adjustment plate (22), and an adjustment component (23). The fixed plate (21) is located on both sides of the base box (12), and the adjustment plate (22) is located on both sides of the inclined positioning platform (3). The fixed plate (21) and the adjustment plate (22) are connected by the adjustment component (23), and the adjustment component (23) can drive the adjustment plate (22) to rise and fall.

6. The pipeline positioning control device according to claim 5, characterized in that: The adjusting component (23) includes an adjusting screw (231) and adjusting nuts (232). One end of the adjusting screw (231) is fixedly connected to the adjusting plate (22), and the other end extends out of the fixed plate (21). Two adjusting nuts (232) are threaded onto the adjusting screw (231), and the two adjusting nuts (232) abut against opposite sides of the fixed plate (21).

7. The pipeline positioning control device according to claim 5, characterized in that: The adjusting component (23) includes a hydraulic cylinder (233) and a lifting rod (234). The cylinder body end of the hydraulic cylinder (233) is fixed on the base plate (11). The piston rod end of the hydraulic cylinder (233) passes through the fixing plate (21) and is connected to one end of the lifting rod (234). The other end of the lifting rod (234) is connected to the adjusting plate (22).

8. The pipeline positioning control device according to claim 5, characterized in that: It also includes a guide rod (4), one end of which is fixed to the fixed plate (21), and the other end extends through the adjusting plate (22) and along its moving direction. The guide rod (4) is slidably connected to the adjusting plate (22).

9. The pipeline positioning control device according to claim 1, characterized in that: The inclined surface (31) of the inclined positioning platform (3) is provided with an anti-slip structure.

10. The pipeline positioning control device according to claim 4, characterized in that: The bottom box (12) is hollow inside to form a receiving cavity, which is used to accommodate at least a part of the structure when the inclined positioning platform (3) descends.

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