A hoisting platform for large-diameter pipelines on steep slopes in mountainous areas

Abstract

This utility model discloses a large-diameter pipeline hoisting platform for steep slopes in mountainous areas, belonging to the field of pipeline installation and construction technology. It includes a track, a hoisting device, a traction device, and a guiding device. The track is laid in the construction area of ​​the steep slope section in the mountainous area. The bottom of the hoisting device is equipped with a set of wheels adapted to the track. The hoisting device is used to support and fix the large-diameter pipeline, and to complete the lifting, lowering, and positioning of the pipeline. The traction device provides traction force for the hoisting device to move along the track, and the traction device is connected to the hoisting device through a traction component to transmit power. The guiding device is used to guide and limit the traction component. This utility model effectively solves the problems of difficult transportation, hoisting and positioning, and low docking accuracy of large-diameter pipelines caused by complex terrain and limited construction space in steep slope sections of mountainous areas, as well as the slow construction progress and difficulty in ensuring quality and safety caused by the lack of systematic integrated design in existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of pipeline installation and construction technology, specifically to a hoisting platform for large-diameter pipelines on steep slopes in mountainous areas. Background Technology

[0002] In the fields of water conservancy and energy infrastructure construction, water diversion pressure pipelines serve as crucial transportation carriers, and their construction quality and efficiency directly affect the functional realization and operational stability of the entire project. As infrastructure construction in my country extends into mountainous areas, the demand for large-diameter water diversion pressure pipelines on steep slopes is increasing. These slopes typically have an incline greater than 25°, and large diameter refers to pipes with a diameter ≥ 1.2m. Due to their large flow rates and high pressure requirements, these pipelines play a vital role in water resource allocation in mountainous areas and energy supply in remote regions. Their construction technology has become one of the key factors influencing the progress of major projects in mountainous areas.

[0003] However, the steep slopes in mountainous areas present a series of challenges for the construction of large-diameter pipelines, mainly in the following aspects: 1. Mountainous steep slopes present complex terrain and limited construction space. Mountainous steep slopes are often characterized by deep gullies, dense vegetation, and dramatic topographic relief, making it difficult to level the construction site and severely limiting the space for the entry and placement of large construction equipment. Traditional construction methods require large-scale excavation and preparation of the construction area, which not only damages the local ecosystem but also increases construction costs and time. Furthermore, the prepared site still cannot meet the space requirements for transporting and hoisting large-diameter pipelines, hindering the improvement of construction efficiency.

[0004] 2. Difficulties in transporting large-diameter pipelines. Large-diameter water diversion pressure pipelines typically have heavy individual sections, and stable transport channels are lacking in steep mountainous sections. Traditional transport methods often rely on temporary, simple access roads or manual towing. On the one hand, these methods are easily affected by terrain, leading to pipeline tilting and collisions, causing pipeline damage or transport interruptions. On the other hand, the gravity on steep slopes makes it difficult to accurately control the speed and direction of the pipeline during transport, posing significant safety hazards. Furthermore, the stability of the pipeline's posture when transported to the construction site cannot be guaranteed, creating potential problems for subsequent installation.

[0005] 3. Difficulty in hoisting and positioning, and low docking accuracy. The limited construction space on steep slopes in mountainous areas makes it difficult for large hoisting equipment to operate fully. Traditional hoisting methods often employ single-point lifting or segmented hoisting, making it difficult to guarantee the horizontal and vertical accuracy of the pipeline during hoisting. Simultaneously, the sloping terrain of steep slopes makes it difficult to accurately set the pipeline installation benchmark, resulting in significant alignment errors between the track centerline and the pipe axis. This leads to problems such as misalignment and excessive gaps during pipeline docking, affecting not only the pipeline's sealing performance and structural strength but also requiring repeated adjustments and corrections, severely delaying construction progress and increasing construction costs.

[0006] Furthermore, existing pipeline construction technologies for steep slopes in mountainous areas often focus on improving individual aspects, such as optimizing transportation equipment or hoisting tools. They lack integrated design and coordinated optimization of the traction, transportation, and installation systems, leading to poor coordination between different construction stages and hindering the formation of an efficient construction process. In actual construction, deviations in pipeline posture during transportation directly affect the accuracy of hoisting and positioning. Conversely, errors in hoisting and positioning further exacerbate docking accuracy issues, creating a vicious cycle that makes it difficult to simultaneously meet the requirements of construction progress, quality, and safety.

[0007] In summary, the construction of large-diameter water diversion pressure pipelines on steep slopes in mountainous areas currently faces multiple challenges, including complex terrain, difficult transportation, inaccurate positioning, low docking precision, and poor system integration. These challenges severely restrict the efficiency and quality of infrastructure construction in mountainous areas. Therefore, there is an urgent need for a construction platform that can adapt to steep mountainous terrain, achieve stable transportation, precise positioning, and efficient docking, in order to solve the problems existing in current technologies and promote the upgrading and development of pipeline construction technology in mountainous areas. Utility Model Content

[0008] To address the problems existing in the prior art, this utility model provides a large-diameter pipeline hoisting platform for steep slopes in mountainous areas. It aims to solve the problems of difficult transportation, hoisting positioning, and low docking accuracy of large-diameter pipelines due to complex terrain and limited construction space in steep mountainous areas, as well as the slow construction progress and difficulty in ensuring quality and safety caused by the lack of system integration design in existing technologies. To achieve the above objectives, this utility model provides the following technical solution: A large-diameter pipeline hoisting platform for steep slopes in mountainous areas includes a track, a hoisting device, a traction device, and a guiding device. The track is laid in the construction area of ​​the steep slope section in the mountainous area. The bottom of the hoisting device is equipped with a set of wheels adapted to the track. The hoisting device is used to carry and fix the large-diameter pipeline, and to complete the lifting, lowering, and positioning of the pipeline. The traction device is used to provide traction force for the hoisting device to move along the track, and the traction device is connected to the hoisting device through a traction component to transmit power. The guiding device is used to guide and limit the traction component.

[0009] Furthermore, the number of tracks is two and they are arranged in parallel, and the extension direction of the two tracks is consistent with the slope direction of the steep slope section of the construction area in the mountainous area.

[0010] Furthermore, the traction device includes a winch and a ground anchor fixing structure. The ground anchor fixing structure includes a first-stage concrete layer, a second-stage concrete layer, and several anchor rods. The anchor rods are fixedly connected to the poured first-stage concrete layer. The winch base is anchored through the anchor rods, and the second-stage concrete layer is poured after the anchor rods are welded and fixed to the winch base.

[0011] Furthermore, the traction component is a steel-core wire rope with a double strand configuration.

[0012] Furthermore, the hoisting device includes a frame body, a fixing component, and a lifting component. The frame body includes several main beams and crossbeams. The main beams are arranged parallel to the pipeline transportation direction, and the crossbeams are perpendicular to the main beams and welded at intervals between adjacent main beams. The main beams and the crossbeams form a U-shaped frame structure. A herringbone brace and a connecting brace are also provided between the main beams and the crossbeams. The herringbone brace is symmetrically welded to the inner side of the U-shaped frame structure, and the connecting brace is transversely welded between two crossbeams and / or two main beams. The fixing component is used to securely limit the pipeline to be hoisted on the frame body. The lifting component is used to realize the lifting and adjustment of the pipeline to be hoisted.

[0013] Furthermore, the lifting assembly includes at least two chain hoists; the chain hoists are fixedly installed at the center of the top of the main frame and are spaced apart along the pipeline transport direction; the hook end of the chain hoist is used to connect with the pipeline to be lifted, and the pipeline is lifted and lowered by the chain of the chain hoist.

[0014] Furthermore, the fixing component includes multiple self-tightening cables, which include a first type of self-tightening cable and a second type of self-tightening cable; each chain hoist is provided with a first type of self-tightening cable at a corresponding position for directly fixing the pipe to be hoisted; a second type of self-tightening cable is provided on both sides of the pipe to be hoisted, with one end of the second type of self-tightening cable connected to the pipe to be hoisted and the other end connected to the frame body.

[0015] Furthermore, the walking wheel set includes two sets of rollers, which are respectively installed at both ends of the bottom of the frame body and correspond one-to-one with the track.

[0016] Furthermore, the guiding device includes two fixed pulleys, a supporting steel section, and a pre-embedded steel plate; the two fixed pulleys are arranged corresponding to the track position and are both mounted on the steel bar, the two ends of the steel bar are welded to the supporting steel section, the supporting steel section is welded to the pre-embedded steel plate, the pre-embedded steel plate is anchored to the primary concrete layer, and reinforcing ribs are welded between the four corners of the pre-embedded steel plate and the supporting steel section.

[0017] Furthermore, it also includes a bracket, which is set at the top of the steep slope where the pipeline is hoisted; the bracket includes a front support member set on the front of the pipeline and side support members set on both sides of the pipeline; the bracket is used to temporarily support the pipeline to be hoisted.

[0018] The beneficial effects of this utility model are: This utility model provides a large-diameter pipeline hoisting platform for steep mountain slopes, adaptable to complex terrain and effectively solving the problem of limited construction space. Its integrated specialized transportation system enables stable transport of large-diameter pipelines, avoiding pipeline tilting, collisions, and transportation safety hazards. Furthermore, through optimized hoisting and positioning design, precise positioning is achieved simply by ensuring the track centerline aligns with the pipe axis, significantly reducing issues such as misalignment and excessive gaps in pipeline connections, ensuring pipeline sealing performance and structural strength, and lowering rework costs. In addition, the platform optimizes the processes of transportation, hoisting, and connection, reducing connection time and significantly improving construction progress. Its stable operation and safety protection design reduce personnel and equipment safety risks, ensuring construction quality. Simultaneously, its integrated traction, transportation, and installation systems achieve seamless connection between all stages. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the traction device disclosed in this utility model; Figure 2 This is a schematic diagram of the ground anchor fixing structure of the traction device disclosed in this utility model; Figure 3 This is a diagram showing the arrangement of the track disclosed in this utility model; Figure 4 This is a schematic diagram of the guiding device disclosed in this utility model. Figure 5 This is a layout diagram of the slope roof bracket disclosed in this utility model; Figure 6 These are three views of the hoisting device disclosed in this utility model; wherein, Figure 6 (a) Front view, Figure 6 (b) is a side view. Figure 6 (c) is a top view; Figure 7 This is a schematic diagram of the overall structure of the hoisting device disclosed in this utility model. Figure 1 ; Figure 8 This is a schematic diagram of the overall structure of the hoisting device disclosed in this utility model. Figure 2 ; Figure 9 This is a front view of the hoisting device disclosed in this utility model for installation and transportation. Figure 10 This is a front view of a hoisting platform for large-diameter pipelines on steep slopes in mountainous areas, as disclosed in this utility model, for installation and transportation.

[0020] The attached diagram is labeled as follows: 1. Track; 2. Winch; 3. First-stage concrete layer; 4. Anchor bolt; 5. Main beam; 6. Crossbeam; 7. A-frame diagonal brace; 8. Connecting diagonal brace; 9. Chain hoist; 10. Type I self-tightening cable; 11. Type II self-tightening cable; 12. Roller; 13. Fixed pulley; 14. Front support component; 15. Side support component. Detailed Implementation

[0021] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit its scope of protection. Those skilled in the art should understand that the present invention can be implemented even without certain specific details. In other embodiments, methods, means, equipment, and steps well-known to those skilled in the art are not described in detail to highlight the essence of the present invention.

[0022] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "x-direction," "y-direction," and "z-direction" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only 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 in conjunction with the accompanying drawings and according to the specific circumstances.

[0023] Example 1 See attached Figures 1-10 This embodiment discloses a large-diameter pipeline hoisting platform for steep slopes in mountainous areas, including a track 1, a hoisting device, a traction device, a guiding device, and a bracket. Specifically: Track 1 is laid in the steep slope section of the construction area in the mountainous area. There are two tracks 1, which are set in parallel. The extension direction of the two tracks 1 is consistent with the slope direction of the steep slope section of the construction area. Track 1 can be made of P30 type Q235 steel rails, and the spacing between tracks 1 can be set to 3.3m. Track 1 can provide a stable moving guide foundation for the hoisting equipment.

[0024] The hoisting device includes a main frame, fixing components, and lifting components. The main frame consists of several main beams 5 and crossbeams 6. Both the main beams 5 and crossbeams 6 are made of I28a I-beams. The main beams 5 are arranged parallel to the pipeline transportation direction, and the crossbeams 6 are perpendicular to the main beams 5 and welded at intervals between adjacent main beams 5, forming a U-shaped frame structure. The frame height can be set to 3.5m and the length to 4m. A herringbone brace 7 and connecting brace 8 are also provided between the main beams 5 and crossbeams 6. The herringbone brace 7 is made of I28a I-beams and is symmetrically welded to the inside of the U-shaped frame structure. The connecting brace 8 is made of I14 I-beams and is welded laterally between two crossbeams 6 and two main beams 5, enhancing the overall rigidity of the main frame. The lifting assembly includes two 5t chain hoists 9, fixedly installed at the center of the top of the main frame, spaced apart along the pipeline transport direction. The hook end of each chain hoist 9 is connected to the pipeline to be lifted via a sling. The lifting and lowering of the pipeline is achieved by the raising and lowering of the chain, and the two chain hoists 9 operate synchronously to ensure the pipeline is raised and lowered horizontally. The fixing assembly includes multiple self-tightening cables, divided into first-type self-tightening cables 10 and second-type self-tightening cables 11. Two first-type self-tightening cables 10 are installed at the corresponding position of each chain hoist 9, directly wrapping and fixing the pipeline to be lifted; two second-type self-tightening cables 11 are installed on each side of the pipeline to be lifted, one end connected to the outer wall of the pipeline, and the other end welded and fixed to the crossbeam 6 of the main frame to prevent the pipeline from sliding or shifting during transportation.

[0025] The bottom of the hoisting device is equipped with a set of traveling wheels adapted to the track 1. The set of traveling wheels includes two sets of rollers 12. The rollers 12 can be track 1 wheels with a diameter of 200mm, and the wheel body material can be 45# steel. The two sets of rollers 12 are respectively installed at both ends of the bottom of the frame body, corresponding one-to-one with the two tracks 1, to ensure that the hoisting device moves smoothly along the track 1.

[0026] The traction device includes a winch 2 and a ground anchoring structure, used to provide traction force for the hoisting device to move along the track 1. The ground anchoring structure can consist of a primary concrete layer 3, a secondary concrete layer, and several anchor bolts 4. For example, six anchor bolts 4 can be installed. The anchor bolts 4 are driven into the poured primary concrete layer 3 to a depth of 1.5m. The winch 2 base is initially anchored by the anchor bolts 4. After the anchor bolts 4 are welded and fixed to the ground anchor bolts matching the winch 2 base, the secondary concrete layer is poured to form a stable ground anchoring structure. The traction component can use 6×19W+FC type steel core wire rope with a diameter of Ø32, arranged in double strands. One end is connected to the winch 2, and the other end can be connected to both sides of the crossbeam 6 of the hoisting device through a snap ring to transmit traction power.

[0027] The guiding device includes two fixed pulleys 13, supporting steel sections, and embedded steel plates, used to guide and limit the steel-cored wire rope. The two fixed pulleys 13 are positioned corresponding to the track 1. Each fixed pulley 13 has a diameter of 200mm and is mounted on a 60mm steel bar. Both ends of the steel bar are welded to I28a type supporting steel sections. The supporting steel sections can be 500mm high and are welded to a 15mm thick embedded steel plate. The embedded steel plate is anchored to the first-stage concrete layer 3, and reinforcing ribs are welded between the four corners of the steel plate and the supporting steel sections to ensure the fixed pulleys 13 are securely installed.

[0028] The support bracket is installed at the top of the steep slope where the pipeline is hoisted. It includes a front support 14 and a side support 15, both made of I14 I-beams. The front support 14 can be 1.1m long and is installed on the front of the pipeline; the side support 15 can be 2m long and is installed on both sides of the pipeline. It can be fixed to the concrete base slab using Ø25L-shaped anchor rods 4, which are 2m long. A 50cm wide operating platform can also be reserved on the concrete base slab, running through the entire pipeline, to facilitate workers threading ropes to secure the pipeline. The support bracket is used for temporary support of the pipeline to be hoisted.

[0029] The working process of this embodiment is as follows: Before the pipeline is hoisted, the support bracket is installed at the designated position at the top of the slope, and the truck crane lifts the pipeline onto the support bracket. During hoisting, a 10t sling can be used to lift the pipeline longitudinally through its interior.

[0030] After the pipeline is hoisted onto the support frame, it is then lifted and secured using a hoisting device. Before lifting, the installation position of the pipeline slings is precisely calculated based on the slope to ensure that the center of the pipe is aligned with the center of the hoisting device after lifting, preventing uneven stress that could cause the pipe to slip. The front and rear chain hoists 9 must operate simultaneously during both lifting and lowering of the pipe. After lifting, to ensure the pipe's stability during transport, two self-tightening cables are installed on each side of the pipe, connecting and securing them to the main frame of the hoisting device. This prevents slippage during lowering, which could pose a safety hazard.

[0031] The winch 2 of the traction device is started. Guided by the fixed pulley 13 of the guide device, the steel-cored wire rope drives the hoisting device to move down the steep slope via the traveling wheel set along the track 1. After reaching the installation position, the chain hoist 9 of the lifting assembly is operated to lower the pipeline to the design elevation. Temporary supports are then made using I-beams to support and fix the steel pipe. Surveyors monitor and measure the entire process to ensure the accuracy of the pipe section installation position. After the pipe section is adjusted and positioned, the pipe ends of the front and rear sections are welded and fixed with short welds, and then the entire weld is filled layer by layer. After the weld is completed, the hoisting device is withdrawn, and the winch 2 reverses its direction to pull the hoisting device back to the top of the slope to carry out the hoisting operation of the next section of pipeline until the installation of the pressure steel pipe on the slope is completed.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. A hoisting platform for large-diameter pipelines on steep slopes in mountainous areas, characterized in that: It includes a track (1), a hoisting device, a traction device, and a guiding device; the track (1) is laid in the construction area of ​​the steep slope section in the mountainous area; the bottom of the hoisting device is equipped with a set of traveling wheels adapted to the track (1), the hoisting device is used to carry and fix large-diameter pipes, and to complete the lifting, lowering and positioning of the pipes; the traction device is used to provide traction force for the hoisting device to move along the track (1), and the traction device is connected to the hoisting device through a traction component to transmit power; the guiding device is used to guide and limit the traction component.

2. The large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 1, characterized in that: The number of tracks (1) is two and they are set in parallel. The extension direction of the two tracks (1) is consistent with the steep slope direction of the construction area in the mountainous area.

3. The large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 1, characterized in that: The traction device includes a winch (2) and a ground anchor fixing structure. The ground anchor fixing structure includes a first-stage concrete layer (3), a second-stage concrete layer and several anchor rods (4). The anchor rods (4) are fixedly connected to the first-stage concrete layer (3) after it has been poured. The winch (2) base is anchored through the anchor rods (4). The second-stage concrete layer is poured after the anchor rods (4) are welded and fixed to the winch (2) base.

4. The large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 1, characterized in that: The traction component is a steel-core steel wire rope with a double strand configuration.

5. The large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 1, characterized in that: The hoisting device includes a frame body, a fixing component, and a lifting component. The frame body includes several main beams (5) and crossbeams (6). The main beams (5) are arranged parallel to the pipeline transportation direction. The crossbeams (6) are perpendicular to the main beams (5) and welded at intervals between two adjacent main beams (5). The main beams (5) and the crossbeams (6) form a U-shaped frame structure. A herringbone brace (7) and a connecting brace (8) are also provided between the main beams (5) and the crossbeams (6). The herringbone brace (7) is symmetrically welded to the inside of the U-shaped frame structure. The connecting brace (8) is horizontally welded between two crossbeams (6) and / or two main beams (5). The fixing component is used to securely limit the pipeline to be hoisted on the frame body. The lifting component is used to realize the lifting and adjustment of the pipeline to be hoisted.

6. A large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 5, characterized in that: The lifting assembly includes at least two chain hoists (9); the chain hoists (9) are fixedly installed at the center of the top of the main frame and are spaced apart along the pipeline transportation direction; the hook end of the chain hoist (9) is used to connect with the pipeline to be lifted, and the pipeline is lifted and lowered by the chain of the chain hoist (9).

7. A large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 6, characterized in that: The fixing component includes multiple self-tightening cables, which include a first type of self-tightening cable (10) and a second type of self-tightening cable (11). Each chain hoist (9) is provided with a first type of self-tightening cable (10) at a corresponding position for directly fixing the pipe to be hoisted. The second type of self-tightening cable (11) is provided on both sides of the pipe to be hoisted. One end of the second type of self-tightening cable (11) is connected to the pipe to be hoisted, and the other end is connected to the frame body.

8. A large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 5, characterized in that: The walking wheel set includes two sets of rollers (12), which are respectively installed at both ends of the bottom of the frame body and correspond one-to-one with the track (1).

9. A large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 3, characterized in that: The guiding device includes two fixed pulleys (13), a supporting steel section and a pre-embedded steel plate; the two fixed pulleys (13) are set at the positions corresponding to the track (1) and are both mounted on the steel bar. The two ends of the steel bar are welded to the supporting steel section, the supporting steel section is welded to the pre-embedded steel plate, the pre-embedded steel plate is anchored to the first-stage concrete layer (3), and the four corners of the pre-embedded steel plate are welded to the supporting steel section with reinforcing ribs.

10. A large-diameter pipeline hoisting platform for steep slopes in mountainous areas according to claim 1, characterized in that: It also includes a bracket, which is set at the top of the steep slope where the pipe is hoisted; the bracket includes a front support (14) set on the front of the pipe and side support (15) set on both sides of the pipe; the bracket is used to temporarily support the pipe to be hoisted.

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