A suspended duct assembly, system, and method of use for cross-construction

Abstract

This invention provides a suspended chute assembly, system, and method of use for cross-span construction. It facilitates the transportation, assembly, and disassembly of cross-span construction equipment, is simple and efficient to use, and saves construction time and costs. The suspended chute assembly includes: end suspended chute sections located at both ends of the assembly; the top of each end suspended chute section has a first opening for cable entry; and a transmission mechanism is provided on the inner wall of each end suspended chute section. The suspended chute system includes: a main load-bearing cable, a safety cable, and a limiting wire rope. The main load-bearing cable is used to hoist the suspended chute assembly, and its two ends are respectively connected to the top of the end suspended chute section and the middle or top of one of the tower bodies on either side of the crossing point. The safety cable passes through the suspended chute assembly, and its two ends are respectively connected to the middle or top of the tower bodies on either side of the crossing point. The limiting wire rope's two ends are respectively connected to the bottom of the suspended chute assembly and the bottom of one of the tower bodies on either side of the crossing point.

Description

Technical Field

[0001] This invention relates to the field of power line construction, and more specifically, to a suspended duct assembly, system, and method of use for crossing construction. Background Technology

[0002] With rapid socio-economic growth and the rapid development of infrastructure in my country, power transmission lines are increasingly facing challenges such as crossing highways, railways, and live power lines during construction. The existing main construction method for crossing power lines involves erecting structural crossing frames on the ground. However, due to the large size, extensive land occupation, and heavy weight of these crossing frames, a large number of transport vehicles are required. In areas with limited transportation, this method is even more difficult to implement. Furthermore, due to terrain limitations, it is sometimes impossible to erect crossing frames, and doing so can also lead to land compensation issues. Therefore, the commonly used crossing frame construction method for power transmission lines suffers from a series of problems, including long operation times, large workloads, high process risks, and high construction costs. Summary of the Invention

[0003] The purpose of this invention is to provide a suspended duct assembly, system and method of use for cross-construction, which can facilitate the transportation, assembly and disassembly of cross-construction equipment, is simple and efficient to use, and saves construction time and construction costs.

[0004] The embodiments of the present invention are implemented as follows:

[0005] A suspension duct assembly for cross-construction includes: an end suspension duct, the end suspension ducts being disposed at both ends of the suspension duct assembly, the top of the end suspension duct being provided with a first opening for cable entry, the first opening being provided with an electrically operated opening and closing door for opening or closing the first opening, and a transmission mechanism being provided around the inner wall of the suspension duct.

[0006] In a preferred embodiment of the present invention, the above-mentioned suspension duct assembly includes a plurality of end suspension ducts spliced ​​together by a first flange to form an integral cylindrical structure.

[0007] In a preferred embodiment of the present invention, one end of the electric opening and closing door is hinged to one end of the first opening, and the other end of the first opening is provided with an electronic lock for controlling the opening and release of the electric opening and closing door. A transmission mechanism is provided on the side of the electric opening and closing door facing the inner wall of the end-suspended spool.

[0008] In a preferred embodiment of the present invention, the above-mentioned suspension duct assembly further includes: a middle suspension duct, which is disposed between the end suspension ducts, and the end suspension ducts and the middle suspension duct, as well as the middle suspension ducts connected to each other, are connected by flanges. The top of the middle suspension duct is provided with a second opening for the cable to enter, and the inner wall of the middle suspension duct is provided with a second transmission mechanism.

[0009] In a preferred embodiment of the present invention, both the end-suspended string tube and the middle-suspended string tube are provided with positioning elements to facilitate positioning and installation.

[0010] In a preferred embodiment of the present invention, the top of the end suspension tube and the top of the middle suspension tube are provided with hanging ears.

[0011] In a preferred embodiment of the present invention, the above-mentioned suspension spool assembly further includes: a connecting wire rope and a crossing section support rod, the connecting wire rope being connected to the end suspension spool at both ends; the crossing section support rod, the outer walls of multiple crossing section support rods being connected to the connecting wire rope, so that the whole has a top-open groove-shaped structure, and a third transmission mechanism is provided on the crossing section support rod.

[0012] In a preferred embodiment of the present invention, the transmission mechanism includes any one of a drum, a roller shaft, a roller bar, and a pulley.

[0013] A suspended duct system for crossing construction includes any of the aforementioned suspended duct assemblies. The suspended duct system further includes: a main load-bearing cable, a safety cable, and a limiting wire rope. The main load-bearing cable is used to hoist the suspended duct assembly, and its two ends are respectively connected to the top of the end suspended duct and the middle or top of one of the tower bodies on both sides of the crossing point. The safety cable passes through the suspended duct assembly, and its two ends are respectively connected to the middle or top of the tower bodies on both sides of the crossing point. The limiting wire rope has its two ends respectively connected to the bottom of the suspended duct assembly and the bottom of one of the tower bodies on both sides of the crossing point.

[0014] A method for using a suspended tremie pipe system for cross-construction, the method comprising the following steps:

[0015] The suspension duct assembly is assembled by selecting a suitable suspension duct combination based on the actual protection span length, selecting a main load-bearing cable, safety cable, and limit wire rope of appropriate length and specifications, and connecting one end of the main load-bearing cable and the limit wire rope to the corresponding position of the suspension duct assembly. The safety cable passes through the suspension duct assembly.

[0016] For the suspension duct installation, connect the other end of the main load-bearing cable to the corresponding position on the tower, and connect both ends of the safety cable to the corresponding positions on both sides of the tower.

[0017] The height adjustment of the suspension chute assembly is achieved by tightening or verifying the length of the main load-bearing cable and the safety cable, so that the suspension chute assembly is suspended in the designated position.

[0018] The suspension drum assembly is positioned by connecting the other end of the limit steel wire rope to the tower body to complete the positioning.

[0019] Cable laying: Close the electric door and use specialized cable laying machinery to lay the cable; after completion, open the electric door to lay the cable and perform phase or wire replacement.

[0020] The beneficial effects of this invention are as follows: The suspended duct assembly in this invention adopts a segmented cylindrical structure, which facilitates the transportation of the suspended duct and reduces the cost of crossing construction. The end of the suspended duct assembly is provided with an end suspended duct, and the whole is cylindrical. Compared with the mesh structure, this technical solution has better constraint on the wire harness. A first opening is provided at the top of the end suspended duct. The electric opening and closing door is opened to facilitate wire and phase replacement. When the electric opening and closing door is closed, the cable moves in the inner cavity of the suspended duct. Since a transmission mechanism is also provided in the inner cavity, it is convenient to lay out the cable while avoiding friction damage to the conductor. The entire suspended duct system uses the iron towers on both sides of the crossing point as the tension points of the guy wires and ropes to maintain the suspended duct system at a certain height above the object being crossed. This can effectively avoid the impact of the conductor falling from a high place in the traditional crossing frame method, or even breaking through the sealing net structure, causing an accident to the object being crossed below, thereby achieving the protection of the object being crossed. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the suspended duct system for cross-construction according to the second embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the end-suspended duct according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the cross-sectional structure of the central suspension duct in the second embodiment of the present invention;

[0025] Figure 4 This is a structural schematic diagram of the suspended duct system for cross-construction according to the third embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of the strut structure of the span section according to the third embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the cross-sectional structure of the end-suspended duct according to the fourth embodiment of the present invention.

[0028] Icons: 100-End suspension duct; 110-Cylindrical outer shell; 120-Transmission mechanism; 130-Lifting lug; 140-Electric opening and closing door; 111-First opening; 141-Electromagnetic lock; 150-Flange; 160-Positioning component; 200-Main load-bearing cable; 300-Safety cable; 400-Limiting wire rope; 500-Middle suspension duct; 610-Wire rope; 620-Crossing section support rod; 621-Transmission roller; 001-Wire conductor; 002-Cable traction; 101-Diagonal rod; 102-Horizontal tie rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] First Embodiment

[0036] Please see Figure 1 and Figure 2 A suspended duct assembly for cross-construction is constructed by sequentially splicing multiple end-suspended ducts 100. Each end-suspended duct 100 includes a cylindrical outer shell 110, a transmission mechanism 120, a lifting lug 130, and an electrically operated opening / closing door 140. The top of the cylindrical outer shell 110 has a first opening 111 for cable entry. The transmission mechanism 120 is fitted to the inner wall of the cylindrical outer shell 110, with the cable contacting the surface of the transmission mechanism 120 for easy cable laying and to prevent damage from friction between the cable and the duct during laying. The lifting lug 130 is located at the top of the cylindrical outer shell 110. An electrically operated opening / closing door 140 is also located at the first opening 111. One end of the electrically operated opening / closing door 140 is hinged to one end of the first opening 111, and the other end is connected to an electromagnetic lock 141. Various electromagnetic locks 141 with different shapes and structures are available on the market and will not be detailed here. The opening and closing of the electrically operated opening / closing door 140 is controlled electronically.

[0037] More specifically, the transmission mechanism 120 can be a roller, shaft, or pulley or other non-powered rotating mechanism to prevent damage during cable laying. In this embodiment, rollers are used to save costs and reduce overall weight. In this embodiment, the rollers along the inner wall of the suspended drum are a group. The suspended drum can be equipped with different numbers of rollers and different intervals according to different situations, such as cable weight.

[0038] To facilitate the splicing of the suspended ducts, the end suspended duct 100 in this embodiment is also provided with a flange 150, which is provided at least at one end of the cylindrical shell 110. Adjacent cylindrical shells 110 are connected by flanges 150 and fastened with bolts. To facilitate splicing, the end suspended duct 100 is also provided with a positioning element 160. In this embodiment, to save costs, a slotted pin structure is used for positioning and assembly, that is, a positioning pin is provided on the cylindrical shell 110 of one suspended duct, and a positioning groove is provided at the corresponding position of the positioning pin of the adjacent suspended duct. In other embodiments, holes and locking screws can also be used for positioning and fixing of the suspended duct.

[0039] The suspended gantry system includes a main support cable 200 and a safety cable 300 for hoisting the suspended gantry. In this embodiment, one end of the main support cable 200 is connected to one corner of the top of the assembled suspended gantry, and the other end is connected to the top or middle of one of the tower bodies on both sides of the crossing point. The safety cable 300 passes through the lifting lug 130 and is connected at both ends to the top or middle of the tower bodies on both sides of the crossing point. By adjusting the force and angle of the two support cables on the two towers, the assembled suspended gantry is suspended at a specified height, making full use of existing towers and resources, thus reducing investment.

[0040] In this embodiment, there are generally two main load-bearing cables 200. The purpose of the safety cable 300 can be initially understood as a backup load-bearing cable in case the main load-bearing cable breaks unexpectedly, serving as a safety rope. In practical applications, this cable can be added or not, because the possibility of the two main load-bearing cables breaking simultaneously is extremely low. The safety cable 300 exists to improve the safety of the entire device.

[0041] The suspension duct system also includes a limiting wire rope 400, the two ends of which are connected to one corner of the bottom of the suspension duct and the bottom of the iron tower, respectively, to further strengthen the connection of the suspension duct.

[0042] Before the crossing construction, the required protective crossing length for the actual crossing object is calculated, and the correct suspension duct assembly is selected. At the same time, based on the relative space and position of the towers on site, the main load-bearing cable 200, safety cable 300, and limit wire rope 400 that meet the stress conditions are configured.

[0043] During use, one end of the main load-bearing cable 200 is fixed to the main tower body on both sides of the crossing point, and the other end of the main load-bearing cable 200 is fixed to the suspension duct, serving as the main load-bearing cable for the duct's suspended operation. Then, a safety cable 300 is used to pass through each lug. By adjusting the force and angle of the load-bearing cables on both sides of the tower, the duct assembly is suspended at a specified height. In other embodiments, if lugs are not used, the cable directly passes through the top of the end suspension duct 100, for example, through the gap between the top of the end suspension duct 100 and the roller. To further prevent wear on the safety cable 300, a pulley or other transmission device can be installed between the roller and the outer shell of the end suspension duct 100. Then, a limiting steel wire rope 400 is used to connect the bottom of the suspension duct to the tower, thereby stably suspending the suspension duct at the specified position. The conductor laying is completely confined within the suspended drum. The conductor 001 is pulled by the cable traction 002 to carry out the work. After the laying is completed, the opening and closing gate controller at the top of the suspended drum controls the opening and closing gate to open, thereby realizing the laying of the conductor and changing the phase or changing the line. In this embodiment, the cable traction 002 uses winch traction. In order to facilitate the use of winch traction, a pulley is provided at the contact point between the conductor 001 and the tower. The conductor runs through the pulley suspended by the tower body.

[0044] The transmission line suspension duct crossing construction method in this embodiment is simple and easy for construction personnel to master. When the conductor 001 is laid, the conductor 001 and the guide rope pass through the inner cavity of the suspension duct assembly to achieve safety protection for the object being crossed below the duct.

[0045] Second Embodiment

[0046] Please see Figure 1-3The suspension spool assembly in this embodiment includes multiple suspension spools, a main load-bearing cable 200, a safety cable 300, and a limiting wire rope 400. In order to reduce the overall weight of the suspension spool, this embodiment makes improvements to the structure of the suspension spool, dividing the suspension spool into an end suspension spool 100 and a middle suspension spool 500. The end suspension spool 100 has the same structure as the suspension spool in the first embodiment. The opening and closing door and the electric controller for controlling the opening and closing door at the first opening 111 position in the middle suspension spool 500 are eliminated, and it is open at the top. The end suspension duct 100 and the middle suspension duct 500, as well as the middle suspension duct 500 and the middle suspension duct 500, are also connected by flanges 150. In this embodiment, the transmission mechanism 120 included in the middle suspension duct 500 also uses rollers. Similarly, for easy installation, a positioning element 160 is provided on the suspension duct shell of the middle suspension duct 500. The installation and cable laying method of the suspension duct assembly is the same as in the first embodiment. Under the premise of ensuring the structural strength of the duct assembly, a small distance can be left at both ends of the duct for top surface closure, and the middle part can be set as a top surface opening. This solution can effectively reduce the overall weight of the device. The solution in the second embodiment is suitable for cases where the geometric dimensions of the object being crossed are of medium length.

[0047] Third Embodiment

[0048] Please see Figure 2 , 4 In order to further save costs, this embodiment further simplifies the suspension duct, retaining the end suspension duct 100 of the first and second embodiments. The end suspension ducts 100 at both ends are connected by steel wire ropes 610. The ends of the end suspension ducts 100 are connected to the iron towers via the main load-bearing cable 200. The safety cable 300 passes through the entire suspension duct and connects to the iron towers on both sides. A crossing section support rod 620 is provided on the steel wire rope 610. The crossing section support rod 620 has a top-open groove structure and a transmission roller 621 is provided on the crossing section support rod 620 to prevent cable wear. This allows the newly improved suspension duct to also achieve the travel path of the constrained conductor 001 during deployment, while further reducing the overall weight of the device, reducing the overall construction difficulty and operability. This solution is suitable for situations where the geometric dimensions of the object being crossed are very long and the required protection span is very high. The installation method of the suspension duct assembly in the third embodiment is the same as that in the first embodiment.

[0049] Fourth embodiment

[0050] Please see Figure 6 To further protect against conductor falling during phase switching, line replacement, and wire breakage, this embodiment provides an inclined rod 101 and a horizontal tie rod 102 on the side wall of the end suspension duct in the first embodiment, so that the end suspension duct is generally open at the top.

[0051] In this embodiment, a diagonal rod 101 and a horizontal tie rod 102 are added at regular intervals on both sides of the cylinder. One end of the diagonal rod 101 is hinged to the bottom side wall of the end suspension cylinder, one end of the horizontal tie rod 102 is hinged to the middle side wall of the end suspension cylinder, and the other end of the horizontal tie rod 102 is hinged to the middle of the diagonal rod 101. This embodiment further increases the conductor fall protection range to further reduce the risk of conductor fall during phase switching, wire replacement, and wire breakage.

[0052] In summary, the suspended duct assembly and construction method disclosed in the above three embodiments have the following advantages:

[0053] 1. High construction efficiency: Compared with the traditional construction method of crossing frame, the preparation time in the early stage of construction is shorter. At the same time, it does not require a series of preliminary work such as land occupation, land use coordination, foundation layout, crossing frame assembly and disassembly, etc., which greatly shortens the construction time. It makes full use of existing iron towers and existing resources, reducing investment.

[0054] 2. Low construction cost: Since this technical solution uses a prefabricated suspension duct as the basic structure, the weight of each unit can be controlled according to the material characteristics, which facilitates segmented transportation and flexible assembly. In areas with limited transportation, transportation costs can be greatly reduced. The device is basically not damaged during use and can be reused, resulting in low cost per use.

[0055] 3. Simple and reliable manufacturing: Due to the application of various lightweight and high-strength materials, the physical manufacturing of this invention is easy to realize. At the same time, due to the internal wiring method adopted in this technical solution, the conductor 001 is confined to a limited space, which effectively avoids the impact of falling during the deployment of the conductor 001.

[0056] This specification describes examples of embodiments of the invention, but does not imply that these embodiments illustrate or describe all possible forms of the invention. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings are not necessarily drawn to scale; some features may be enlarged or reduced to show details of specific components. The specific structural and functional details disclosed should not be construed as limiting, but merely as a representative basis for teaching those skilled in the art to implement the invention in various forms. Those skilled in the art will understand that multiple features illustrated and described with reference to any of the drawings can be combined with features illustrated in one or more other drawings to form embodiments not explicitly illustrated or described. The illustrated combinations of features provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the invention may be used as needed for specific applications or implementations.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A suspended tremie pipe system for cross-construction, characterized in that, include: Suspension duct assembly, The main load-bearing cable is used to hoist the suspension duct assembly. The two ends of the main load-bearing cable are respectively connected to the top of the end suspension duct and the middle or top of one of the tower bodies on both sides of the crossing point. A safety cable passes through the suspension duct assembly, and the two ends of the safety cable are respectively connected to the middle or top of the tower body on both sides of the crossing point; The limiting steel wire rope is connected at both ends to the bottom of the suspension drum assembly and the bottom of one of the iron tower bodies on both sides of the crossing point; The suspended spool assembly includes: An end-suspension spool is provided at both ends of the suspension spool assembly. The top of the end-suspension spool is provided with a first opening for the cable to enter. An electric opening and closing door is provided at the first opening to open or close the first opening. A transmission mechanism is provided around the inner wall of the suspension spool. A middle suspension duct is disposed between the end suspension ducts. The end suspension ducts and the middle suspension duct, and the middle suspension ducts are connected by flanges. The top of the middle suspension duct is provided with a second opening for the cable to enter. The inner wall of the middle suspension duct is provided with a second transmission mechanism. Connect the steel wire rope, with both ends connected to the end suspension drum; The cross-section support rods are connected to the connecting steel wire ropes on their outer walls, forming an overall open-top groove-shaped structure. A third transmission mechanism is provided on each cross-section support rod. At least one of the tops of the end-type suspension tube and the middle-type suspension tube is provided with a hanging ear.

2. The suspended duct system for cross-construction according to claim 1, characterized in that, The suspended spool assembly comprises multiple end-suspended spools joined together by a first flange to form a cylindrical structure.

3. The suspended duct system for cross-construction according to claim 1 or 2, characterized in that, One end of the electric opening and closing door is hinged to one end of the first opening, and the other end of the first opening is provided with an electronic lock for controlling the opening and release of the electric opening and closing door. The transmission mechanism is provided on the side of the electric opening and closing door facing the inner wall of the end-suspended spool.

4. The suspended duct system for cross-construction according to claim 3, characterized in that, Both the end-type and middle-type suspension cylinders are equipped with positioning components on their outer shells to facilitate positioning and installation.

5. The suspended duct system for cross-construction according to claim 1, characterized in that, The transmission mechanism includes any one of the following: roller, shaft, bar, and pulley.

6. A method of using a suspended tremie pipe system for cross-construction, characterized in that, The method of using the suspended spool system according to any one of claims 1-5 includes the following steps: The suspension duct assembly is assembled by selecting the suspension duct combination assembly, main load-bearing cable, safety cable, and limiting wire rope according to the actual protection span length, and connecting one end of the main load-bearing cable and the limiting wire rope to the corresponding position of the suspension duct assembly. The safety cable passes through the suspension duct assembly. For the suspension duct installation, connect the other end of the main load-bearing cable to the corresponding position on the tower, and connect both ends of the safety cable to the corresponding positions on both sides of the tower. The height adjustment of the suspension chute assembly is achieved by tightening or verifying the length of the main load-bearing cable and the safety cable, so that the suspension chute assembly is suspended in the designated position. The suspension drum assembly is positioned by connecting the other end of the limit steel wire rope to the tower body to complete the positioning. Cable laying: Close the electric door and use specialized cable laying machinery to lay the cable; after completion, open the electric door to lay the cable and perform phase or wire replacement.

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