Large-span PE membrane external cable installation structure and method

Abstract

The application discloses a large-span PE membrane external cable installation structure and method. The structure comprises multiple frame bodies arranged coaxially at intervals, the frame bodies are arranged on a ground foundation, two installation pipes are arranged on the outer side of each frame body, installation openings with opposite openings are arranged on the installation pipes, a PE membrane is arranged between adjacent frame bodies, membrane cables are arranged at the end of the PE membrane, and the membrane cables are arranged in the inner cavities of the installation pipes; multiple mobile carriages are arranged between the adjacent frame bodies, a walking mechanism matched with the installation pipes is arranged at the bottom end of the mobile carriages, an installation seat is arranged at the middle part of the mobile carriages, and external cables are arranged on the installation seat; traction mechanisms are arranged at the two ends of the ground foundation, pull ropes are arranged at the output ends of the traction mechanisms, and the pull ropes are sequentially connected with the mobile carriages. During installation, the traction mechanisms pull the mobile carriages to move along the installation pipes, the external cables are gradually laid, and after completion, the mobile carriages are recycled in reverse. The application does not need large cranes to work at high altitudes, reduces construction cost and safety risk, avoids damage to the PE membrane, and the mobile carriages can be recycled and reused.

Description

Technical Field

[0001] This invention relates to the field of construction technology for large-span PE membrane structures, and in particular to a structure and method for installing external cables on large-span PE membranes. Background Technology

[0002] In the industrial sector, industrial storage yard sheds are undergoing transformation, replacing the original bolted ball grid structure with a new type of PE membrane structure. The PE membrane is the main component of this structure. During installation, because the membrane is a polymer material, it differs significantly from the original corrugated steel sheet structure. To achieve wind, rain, and snow resistance, steel cables need to be added after the PE membrane is installed, and it is crucial to ensure that the membrane structure is not damaged by the steel cables during installation. The current method involves adding protective sleeves to the steel cables and using large cranes, typically crawler cranes of 150 tons or more with auxiliary booms. This involves a lot of high-altitude work, high costs, low construction efficiency, and is prone to damaging the PE membrane.

[0003] Therefore, there is an urgent need for a large-span PE film external cable installation structure and method that does not require large cranes for high-altitude operations, can utilize existing installation pipes for guidance and load-bearing, facilitates continuous laying of external cables, and allows for the recycling of the construction vehicle frame. Summary of the Invention

[0004] The purpose of this invention is to provide a structure and method for installing external cables on a large-span PE membrane, so as to solve the problems of high cost, low efficiency and easy damage to PE membrane caused by using large cranes for high-altitude operations in the prior art.

[0005] The technical solution adopted by this invention to solve its technical problem is a large-span PE membrane external cable installation structure, including multiple frame bodies arranged coaxially at intervals. The multiple frame bodies are set on a ground foundation. Each frame body has two installation tubes on its outer side. The two installation tubes on each frame body have installation ports with opposite openings. A PE membrane is set between two adjacent frame bodies. A membrane cable is set at the end of the PE membrane and is set in the inner cavity of the installation tube. Multiple mobile frames are set between two adjacent frame bodies. The bottom of each mobile frame is equipped with a traveling mechanism that cooperates with the installation tube. The middle of each mobile frame is equipped with an installation seat. An external cable is set on the installation seat. A traction mechanism is set on the ground foundation. There are two traction mechanisms, located at both ends of the frame bodies respectively. The output end of each traction mechanism is equipped with a pull rope, which is connected to the mobile frames in sequence.

[0006] Furthermore, the mounting base includes a base, on which opposing fixing plates are provided, and a pin is rotatably arranged between the fixing plates. A mounting cylinder is provided in the middle of the pin, and the external cable is arranged inside the mounting cylinder.

[0007] Furthermore, the mobile frame includes two opposing first crossbeams, the ends of which are connected by a second crossbeam, and a connecting rod is provided in the middle of the two first crossbeams.

[0008] Furthermore, the first crossbeam includes multiple connecting rods connected end to end, and the mounting base is located in the middle of the first crossbeam.

[0009] Furthermore, the walking mechanism includes a U-shaped support, and a guide wheel is rotatably disposed inside the U-shaped support.

[0010] Furthermore, the traction mechanism is a winch.

[0011] A method for installing external cables on a large-span PE membrane, employing a large-span PE membrane external cable installation structure, includes the following steps: S1: Fix the traction mechanism to the ground foundation and calculate the length of the pull rope; determine the number of mobile frames based on the laying length of the external pull cable, fix the pull rope to the mobile frame, and fix the end of the pull rope to the traction mechanism; S2: Place the mobile frame located at the end onto the mounting tube and install the external cable onto the mounting base of the mobile frame; S3: Adjust the traction mechanism to tighten the pull rope, then pull the mobile frame along the installation pipe. During the pulling process, place the remaining mobile frames on the installation pipe in sequence, and fix the outer cable to the mobile frame until the outer cable is laid. S4: Disconnect the outer cable from the mounting base, and then the traction mechanism rotates in the opposite direction to retract the mobile frame.

[0012] The beneficial effects of this invention are as follows: This invention utilizes the existing mounting pipes on the outer side of the frame body as the traveling track for the mobile carriage, eliminating the need for a large crane operating platform, reducing high-altitude work, and lowering construction costs and safety risks. The mobile carriage moves along the mounting pipes, with the external cables supported and pulled by the mounting seats, avoiding direct friction or damage to the PE membrane and ensuring the integrity of the membrane structure. Multiple mobile carriages are sequentially connected by two traction mechanisms and pull ropes, enabling continuous and rapid laying of the external cables. After construction is completed, the mobile carriages can be retrieved in reverse for easy reuse. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a mobile chassis; Figure 3 This is a schematic diagram showing the connection between the mobile frame and the mounting tube; Figure 4 This is a schematic diagram showing the interaction between the traveling mechanism and the mounting pipe; Figure 5This is a schematic diagram of the mounting bracket.

[0014] Reference numerals in the attached drawings: 1-Frame body; 2-Ground foundation; 3-Installation pipe; 4-Installation port; 5-PE membrane; 6-Membrane cable; 7-Mobile frame; 701-First crossbeam; 702-Second crossbeam; 703-Connecting rod; 704-Connecting rod; 8-Traveling mechanism; 801-U-shaped support; 802-Guide wheel; 9-Mounting seat; 901-Base; 902-Fixing plate; 903-Pin; 904-Installation cylinder; 10-External cable; 11-Traction mechanism; 12-Pull rope. Detailed Implementation

[0015] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0016] like Figures 1-5 As shown, this invention provides a large-span PE membrane external cable installation structure, comprising multiple frame bodies 1 arranged coaxially at intervals. The multiple frame bodies 1 are mounted on a ground foundation 2, which can be a concrete foundation, strip foundation, or other foundation structure capable of supporting the frame bodies 1. Each frame body 1 has two mounting pipes 3 on its outer side, and each frame body 1 has mounting ports 4 with opposite openings on the two mounting pipes 3. A PE membrane 5 is placed between adjacent frame bodies 1, and a membrane cable 6 is attached to the end of the PE membrane 5, which is disposed within the inner cavity of the mounting pipe 3. Through the cooperation of the mounting pipe 3 and the membrane cable 6, the ends of the PE membrane 5 can be fixed and tensioned.

[0017] See Figures 1-3Multiple movable frames 7 are arranged between two adjacent frame bodies 1. A traveling mechanism 8, which works in conjunction with the mounting pipe 3, is located at the bottom of each movable frame 7. The traveling mechanism 8 can support itself on the mounting pipe 3 and move along the length of the mounting pipe 3, thus allowing the mounting pipe 3 to simultaneously serve as the housing structure for the membrane cable 6 and the traveling track for the movable frames 7. A mounting base 9 is located in the middle of each movable frame 7, and an external cable 10 is mounted on the mounting base 9. The external cable 10 can be a steel cable, used to enhance the wind, rain, and snow resistance of the PE membrane 5 structure. Two traction mechanisms 11 are installed on the ground foundation 2, located at opposite ends of the frame body 1. A pull rope 12 is installed at the output end of each traction mechanism 11, and the pull rope 12 is sequentially connected to the movable frames 7. It should be noted that the pull rope 12 can be looped around the top of the frame body 1 by a drone and then connected to two traction mechanisms 11. By pulling the pull rope 12 in and out by the traction mechanism 11, multiple mobile frames 7 can be moved along the installation pipe 3, thereby gradually laying the outer cable 10 to the set position.

[0018] like Figure 5 As shown, the mounting base 9 includes a base 901, on which are opposite fixing plates 902. A pin 903 is rotatably mounted between the fixing plates 902. A mounting cylinder 904 is located in the middle of the pin 903. The outer cable 10 is located inside the mounting cylinder 904. It should be noted that when installing the outer cable 10, the mounting cylinder 904 on the first moving frame 7 is fixedly connected to the outer cable 10, which can be fixed by tying a knot or other methods. The mounting cylinders 904 on the other moving frames 7 only serve a supporting function. The inner diameter of the mounting cylinder 904 is larger than the outer diameter of the outer cable 10. After the outer cable 10 is delivered to the position, the outer cable 10 on the first moving frame 7 is released, so that the entire moving frame 7 and the outer cable 10 can move relative to each other. Finally, the pull rope 12 can be used to retrieve the moving frame 7.

[0019] like Figure 2 As shown, the mobile frame 7 includes two opposing first crossbeams 701, the ends of which are connected by a second crossbeam 702. A connecting rod 703 is provided in the middle of the two first crossbeams 701, which can improve the overall stability of the mobile frame 7. The first crossbeam 701 may include multiple connecting rods 704, which are detachably connected end to end. This allows the length of the first crossbeam 701 to be adjusted according to the distance between two adjacent frame bodies 1, improving adaptability. The mounting seat 9 is located in the middle of the first crossbeam 701. This structure gives the mobile frame 7 good load-bearing capacity and structural stability, while also facilitating the central placement of the mounting seat 9, making the external tension cable 10 more evenly stressed.

[0020] like Figure 4As shown, the traveling mechanism 8 includes a U-shaped support 801, within which a guide wheel 802 is rotatably mounted. The guide wheel 802 cooperates with the mounting pipe 3 and can roll along the mounting pipe 3, thereby reducing the resistance when the mobile frame 7 moves. The traction mechanism 11 is preferably a winch. The winch is fixed on the ground foundation 2 and pulls the mobile frame 7 via a pull rope 12. The two traction mechanisms 11 are located at opposite ends of the frame body 1, enabling both forward traction for laying and reverse retrieval of the mobile frame 7.

[0021] The present invention also provides a method for installing external cables on a large-span PE membrane, using the above-mentioned large-span PE membrane external cable installation structure, comprising the following steps: S1: Fix the traction mechanism 11 on the ground foundation 2 and calculate the length of the pull rope 12; determine the number of mobile frames 7 according to the laying length of the outer cable 10, and fix the pull rope 12 on the mobile frame 7, while fixing the end of the pull rope 12 on the traction mechanism 11. S2: Place the mobile frame 7 located at the end onto the mounting tube 3, and install the outer cable 10 onto the mounting seat 9 of the mobile frame 7; S3: Adjust the traction mechanism 11 to tighten the pull rope 12, and then pull the mobile frame 7 along the mounting pipe 3. During the pulling process, place the remaining mobile frames 7 on the mounting pipe 3 in sequence, and fix the outer cable 10 on the mobile frame 7 until the outer cable 10 is laid. S4: Disconnect the outer cable 10 from the mounting base 9, and then the traction mechanism 11 rotates in the opposite direction to retract the mobile frame 7.

[0022] During construction, the PE film 5 and membrane cables 6 are first installed on the frame body 1, with the membrane cables 6 located inside the installation pipe 3. Then, the traction mechanism 11, such as a winch, is fixed to the ground foundation 2, and the number of mobile frames 7 is determined based on the laying length of the outer cables 10. Multiple mobile frames 7 are connected sequentially by pull ropes 12, with the ends of the pull ropes 12 connected to the traction mechanism 11. After starting the traction mechanism 11, the pull ropes 12 are tensioned and pull the mobile frames 7 along the installation pipe 3. During the movement, the remaining mobile frames 7 can be placed sequentially, and the outer cables 10 are fixed via the mounting base 9. The outer cables 10 are gradually unfolded under the support of the mobile frames 7, avoiding direct contact and friction with the PE film 5. After laying, the connection between the outer cables 10 and the mounting base 9 is released, and the traction mechanism 11 is started in reverse to retrieve the mobile frames 7 along the installation pipe 3 for reuse.

[0023] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A large-span PE membrane external cable installation structure, comprising multiple frame bodies (1) arranged coaxially at intervals, the multiple frame bodies (1) being set on a ground foundation (2), each frame body (1) having two installation pipes (3) on its outer side, each frame body (1) having two installation ports (4) with opposite openings on the two installation pipes (3), a PE membrane (5) being arranged between two adjacent frame bodies (1), the ends of the PE membrane (5) being provided with membrane cables (6), the membrane cables (6) being arranged in the inner cavity of the installation pipes (3); characterized in that: Multiple mobile frames (7) are provided between two adjacent frame bodies (1). The bottom end of the mobile frame (7) is provided with a walking mechanism (8) that works with the mounting pipe (3). The middle part of the mobile frame (7) is provided with a mounting seat (9). An external cable (10) is provided on the mounting seat (9). A traction mechanism (11) is provided on the ground foundation (2). There are two traction mechanisms (11), which are located at both ends of the frame body (1). The output end of the traction mechanism (11) is provided with a pull rope (12). The pull rope (12) is connected to the mobile frame (7) in sequence.

2. The external cable installation structure for a large-span PE membrane as described in claim 1, characterized in that: The mounting base (9) includes a base (901), on which opposite fixing plates (902) are provided, and a pin (903) is rotatably provided between the fixing plates (902). A mounting cylinder (904) is provided in the middle of the pin (903), and the outer cable (10) is provided inside the mounting cylinder (904).

3. The external cable installation structure for a large-span PE membrane as described in claim 1, characterized in that: The mobile frame (7) includes two opposing first crossbeams (701), the ends of which are connected by a second crossbeam (702), and a connecting rod (703) is provided in the middle of the two first crossbeams (701).

4. The external cable installation structure for a large-span PE membrane as described in claim 3, characterized in that: The first crossbeam (701) includes multiple connecting rods (704) connected end to end, and the mounting base (9) is located in the middle of the first crossbeam (701).

5. The external cable installation structure for a large-span PE membrane as described in claim 1, characterized in that: The walking mechanism (8) includes a U-shaped support (801), and a guide wheel (802) is rotatably arranged inside the U-shaped support (801).

6. The external cable installation structure for a large-span PE membrane as described in claim 1, characterized in that: The traction mechanism (11) is a winch.

7. A method for installing external cables on a large-span PE membrane, employing an external cable installation structure for a large-span PE membrane as described in any one of claims 1-6, characterized in that, Includes the following steps: S1: Fix the traction mechanism (11) on the ground foundation (2) and calculate the length of the pull rope (12); determine the number of mobile frames (7) according to the laying length of the outer cable (10), fix the pull rope (12) on the mobile frame (7), and fix the end of the pull rope (12) on the traction mechanism (11); S2: Place the mobile frame (7) located at the end onto the mounting tube (3) and install the outer cable (10) onto the mounting seat (9) of the mobile frame (7); S3: Adjust the traction mechanism (11) to tighten the pull rope (12), and then pull the mobile frame (7) along the installation pipe (3). During the pulling process, place the remaining mobile frames (7) on the installation pipe (3) in sequence, and fix the outer cable (10) on the mobile frame (7) until the outer cable (10) is laid. S4: Release the connection between the outer cable (10) and the mounting base (9), and then the traction mechanism (11) rotates in the opposite direction to retract the mobile frame (7).

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