Cable laying auxiliary device

Abstract

The utility model relates to the technical field of optical cable laying, and discloses an auxiliary device for cable laying, which comprises at least a plurality of protection plates and a plurality of connecting pieces, the plurality of protection plates are connected through the connecting pieces, the plurality of protection plates are connected into an openable structure through the connecting pieces, and the plurality of protection plates are encircled to form an inner cavity. Rolling bodies are installed on the inner surface and / or the outer surface of the protection plate, and at least part of the rolling bodies are arranged on the surface of the protection plate in a protruding mode. According to the utility model, the plurality of protection plates are hinged and assembled with the detachable connecting pieces to form an expandable structure, the protection structure is opened and wraps an installed cable before laying, a continuous inner cavity channel is formed after closing, and then the cable needing to be installed is dragged; the surface of the dragged cable is in contact with the balls or the rolling shafts on the outer surface or the inner surface of the protection plate, original sliding friction between the cables is converted into rolling friction between the cables and the protection plate, and the cables are effectively prevented from being damaged by friction in the dragging process.

Description

A cable laying auxiliary device Technical Field

[0001] This utility model relates to the field of optical cable laying technology, and in particular to an auxiliary device for cable laying. Background Technology

[0002] Cable laying refers to the process of laying and installing cables along a surveyed route to form a cable line. Depending on the application, it can be divided into several laying methods such as overhead, underground, underwater, wall, and tunnel. The rational selection of cable laying method is very important for ensuring the transmission quality, reliability, construction and maintenance of the line.

[0003] Traditional cable laying often involves dragging, which typically requires dragging over long distances. Since multiple cables are frequently involved, friction occurs between them during dragging, making dragging more difficult and potentially causing overheating and damage to the cable insulation. Therefore, there is an urgent need for a laying auxiliary device to prevent cable damage during dragging, protecting the cable from damage caused by pulling. Summary of the Invention

[0004] In order to overcome the shortcomings of existing technologies that cause cable damage due to dragging and friction during cable laying, this utility model provides a cable laying auxiliary device that effectively prevents friction damage during cable dragging.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cable laying auxiliary device includes at least a plurality of protective plates and a plurality of connectors. The plurality of protective plates are connected to each other by the connectors and are connected by the connectors to form an openable structure. The plurality of protective plates enclose an inner cavity. Rolling elements are installed on the inner surface and / or outer surface of the protective plates, and at least some of the rolling elements are protruding from the surface of the protective plates.

[0007] Using the above technical solution, multiple protective plates are assembled through hinges and detachable connectors to form an openable and closable structure. Before laying, the protective structure is opened and wrapped around the installed cable. After closing, it forms a continuous inner cavity channel. Then, the cable to be installed is dragged. When the cable is dragged, the surface of the dragged cable contacts the rolling elements on the outer or inner surface of the protective plate, which transforms the original sliding friction between the cables into rolling friction between the cable and the protective plate, effectively preventing frictional damage during cable dragging. Moreover, the openable and closable structure makes cable installation and removal easier, facilitates operation, and improves laying efficiency.

[0008] Preferably, two circumferentially adjacent protective plates are detachably connected, while the remaining two circumferentially adjacent protective plates are hinged together.

[0009] Using the above technical solution, two connection methods are set between circumferentially adjacent protective plates. When it is necessary to install or disassemble the device, the operator only needs to separate the detachable connection of the first connector to partially disassemble the device. At this time, the remaining protective plates still maintain the overall connection relationship through hinges. Therefore, after the cable is inserted into the inner cavity, the device can be quickly disassembled by disassembling the partial connection points without completely disassembling all protective plates.

[0010] Preferably, both ends of the protective plate are detachably connected to the adjacent protective plates.

[0011] Using the above technical solution, the two ends of the protective plate are connected to two adjacent protective plates via detachable connection structures, forming a segmented wrapping unit. During cable laying, operators can flexibly increase or decrease the number of protective plates or adjust the connection angle between adjacent protective plates according to changes in the curvature of the cable's bending path and the laying length. When cable maintenance or protective plate replacement is required, only the connection point corresponding to the target location needs to be disconnected to remove the specific protective plate, without disassembling the entire device.

[0012] Preferably, two circumferentially adjacent protective plates are detachably connected, while the remaining two circumferentially adjacent protective plates are softly connected.

[0013] The above technical solution utilizes two types of adjacent protective plates: detachable connections and flexible connections. This allows for flexible adjustment and stress buffering of the protective device during cable dragging. Detachable connections between adjacent circumferential protective plates allow operators to quickly disassemble specific areas for maintenance or repositioning. Flexible connections are used between the remaining adjacent circumferential protective plates. These flexible connections have stronger deformation capabilities, better matching the needs of cable laying at angles or bends.

[0014] As a preferred option, flexible rope connections are used. Flexible ropes are low in cost, flexible, easily deformable, and not easily broken, making them well-suited for cable laying requirements.

[0015] Preferably, the protection plates are divided into multiple groups, each group of protection plates includes at least two protection plates, the protection plates in each group are connected sequentially along the circumference of the cable, and the protection plates in adjacent groups are hinged along the length of the cable.

[0016] Using the above technical solution, the protection plates in the same group form a closed ring structure through circumferential connection, which forms a radial constraint on the cable to prevent displacement. The adjacent groups of protection plates form a flexible node through a hinge structure. When the cable passes through a bending path, the hinge node allows relative rotation between adjacent protection plate groups, so that the whole device can bend continuously as the shape of the cable changes.

[0017] Preferably, the protective plate includes a first protective plate and a second protective plate, with the second protective plate disposed between the first protective plates, and the first protective plates between two adjacent sets of protective plates being hinged to each other.

[0018] Using the above technical solution, the protective plate that is hinged between the two sets of protective plates is called the first protective plate. It is not necessary for each protective plate in each set to be hinged to the other. Only the first protective plates at the corresponding positions need to be hinged to complete the hinge of the two sets of protective plates. For example, when there are few protective plates in a set, one of the protective plates in each of the two adjacent sets can be selected as the first protective plate for connection. When there are many protective plates in a set, several protective plates can be connected as the first protective plates at intervals. In this way, it is not necessary for each corresponding protective plate in the two adjacent sets of protective plates to be connected, which reduces the installation time of the laying device and improves the laying efficiency.

[0019] Preferably, the protective plate is an arc-shaped protective plate.

[0020] By adopting the above technical solution, the bending shape of the arc-shaped protective plate can better adapt to the circumferential surface of the cable, thereby effectively wrapping the cable and forming a continuous support structure that matches the shape of the cable.

[0021] Preferably, the protective plate includes a first retainer and a second retainer. The first retainer has several slots, and the second retainer has several openings. The rolling element is installed in the slot, passes through the opening, and is partially exposed outside the opening. The diameter of the rolling element is greater than the radial length of the opening.

[0022] Using the above technical solution, the groove depth of the first cage can be slightly greater than the radius of the rolling element, so that the rolling element can still roll freely after being partially embedded. The opening diameter of the second cage can be smaller than the diameter of the rolling element. When the two are stacked, the edge of the opening forms a point contact with the surface of the rolling element. During the cable dragging process, the rolling element rotates under pressure, so that the cable and the protective plate form a rolling contact. The groove depth is greater than the diameter of the rolling element, and the opening diameter is smaller than the diameter of the rolling element, so that the rolling element can only move within the groove and the opening, which maintains the rolling freedom and prevents it from leaving the installation position.

[0023] Preferably, the cage surface has a groove, and shaft holes are correspondingly formed on both sides of the groove. The rolling element includes a roller and a rotating shaft connected to both sides of the roller. The end of the rotating shaft away from the roller is installed in the shaft hole, and the rotating shaft is rotatably connected to the shaft hole. The side of the roller protrudes from the groove.

[0024] Using the above technical solution, when the cable is dragged on the surface of the protective plate, the roller is driven to rotate by the movement of the cable. The rotating shaft rotates around its own axis in the shaft hole. The contact between the cable and the roller is changed from sliding friction to rolling friction, reducing friction and effectively reducing the risk of cable surface wear.

[0025] The beneficial effects of this utility model are: (1) it can effectively reduce the wear of cables caused by friction; (2) the disassembly and assembly method is simple and the disassembly and assembly efficiency is high; (3) it can adapt to the protection of cables of different sizes. Attached Figure Description

[0026] Figure 1 is a structural schematic diagram of a set of protective plates of this utility model;

[0027] Figure 2 is a front view of the cable laying auxiliary device;

[0028] Figure 3 is a schematic diagram of the protective plate assembled into a semi-circle;

[0029] Figure 4 shows the cable laying auxiliary device after multiple sets of protection boards are assembled.

[0030] Figure 5 is a schematic diagram of a set of auxiliary devices for laying planar plate-shaped cables;

[0031] Figure 6 is a rear view of Figure 5;

[0032] Figure 7 is a schematic diagram of the structure of multiple sets of planar plate cable laying auxiliary devices;

[0033] Figure 8 is a schematic diagram of the first structure of the protective plate;

[0034] Figure 9 is a schematic diagram of the second structure of the protective plate.

[0035] In the figure: 1. Cable laying auxiliary device; 10. Protective plate; 111. First retainer; 112. Second retainer; 113. Slot; 114. Opening; 115. Groove; 116. Shaft hole; 12. Rolling element; 121. Roller; 122. Rotating shaft; 13. Ball; 20. Connector; 30. Inner cavity. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] Therefore, as shown in Figure 1, this application proposes a cable laying auxiliary device 1 including multiple protective plates 10 and connectors 20. The protective plates 10 form an openable structure through the connectors 20, and after being closed, they form an inner cavity 30 for the cable to pass through. Rolling elements 12 are installed on the inner surface and / or outer surface of the protective plates 10, and at least some of the rolling elements 12 are protruding from the surface of the protective plates 10.

[0038] Among them, the protective plate 10 refers to the plate-shaped component that constitutes the external protective structure of the cable, which is spliced ​​together to match the outer diameter of the cable to form a continuous protective layer that wraps the cable. The connector 20 refers to the connecting component used to assemble multiple protective plates 10, so that the protective plate 10 can be closed to form a stable inner cavity 30, and can also be opened to allow the cable to be inserted. The openable structure refers to the assembly method that allows the protective plates 10 to move relative to each other to open and close. The inner cavity 30 refers to the cable wrapping space formed after multiple protective plates 10 are closed. The rolling element 12 refers to the rolling element installed on the protective plate 10.

[0039] Preferably, as shown in Figures 1 and 2, multiple protective plates 10 are assembled by hinges and detachable connectors 20 to form an openable and closable annular structure. Rolling elements 12 protrude from the outer surface of the protective plate 10. In this case, the installed cable can pass through the inner cavity 30, and the cable to be dragged contacts the rolling elements 12 on the outer surface of the protective plate, dragging it forward. When the rolling elements 12 protrude from the inner surface of the protective plate 10, the cable to be dragged is enclosed in the inner cavity 30, and the rolling elements 12 on the protective plate 10 form rolling contact with the cable surface. Preferably, the rolling elements 12 protrude from the outer surface of the protective plate 10, fixing the position of the installed cable, the position of the laid cable, and the position of the cable laying device. This avoids changing the position or length of the installed cable laying device as the cable is dragged, making the operation more efficient.

[0040] The above technical solution transforms the original sliding friction between cables into rolling friction between the cable and the protective plate 10, effectively preventing frictional damage during cable dragging; and the openable structure makes cable installation and removal easier, facilitating operation and improving laying efficiency.

[0041] This application further proposes a detachable connection between two circumferentially adjacent protective plates 10, and a hinged connection between other circumferentially adjacent protective plates 10.

[0042] In one embodiment, the connector 20 includes a first connector and a second connector. Two circumferentially adjacent protective plates 10 are detachably connected via the first connector, while the remaining two circumferentially adjacent protective plates 10 are hinged via the second connector. The first connector can be implemented using a snap-fit ​​or bolt connection to form a detachable interface at a designated location. The second connector is the component that enables the rotational connection between the protective plates 10, and can be implemented using a hinge or pivot structure to maintain the opening and closing freedom of the protective plates 10. Specifically, this technical solution provides two connection methods between circumferentially adjacent protective plates 10. When it is necessary to install or disassemble the device, the operator only needs to separate the detachable connection of the first connector to partially disassemble the device, while the remaining protective plates 10 maintain their overall connection through hinges. Thus, after the cable enters the inner cavity 30, the device can be quickly disassembled by disassembling the partial connection points, without completely disassembling all the protective plates 10. Simultaneously, the existence of the hinge structure allows the protective plates 10 to maintain their opening and closing function, facilitating adjustments to the device shape to adapt to different cable installation requirements.

[0043] This application further proposes that both ends of the protection plate 10 are detachably connected to the adjacent protection plate 10.

[0044] Specifically, the two ends of the protective plate 10 are connected to two adjacent protective plates 10 via detachable connection structures, forming a segmented wrapping unit. During cable laying, operators can flexibly increase or decrease the number of protective plates 10 or adjust the connection angle between adjacent protective plates 10 according to the curvature of the cable bending path and the changes in laying length. When cable maintenance or replacement of a protective plate 10 is required, only the connection point corresponding to the target location needs to be disassembled to remove the specific protective plate 10, without disassembling the entire device. The detachable connection can be achieved using snap-fit, clip-fit, or bolt connection.

[0045] This application further proposes a detachable connection between two circumferentially adjacent protective plates 10, and a flexible connection between the remaining two circumferentially adjacent protective plates 10.

[0046] The detachable connection refers to a connection between the two protective plates 10 that allows for quick separation and assembly. This can be achieved using snap-fit ​​or bolt connections, allowing for quick disassembly of specific parts when adjustment or maintenance is needed, without requiring overall disassembly. The flexible connection refers to a flexible connection between the two protective plates 10 that allows for minor displacement. This can be achieved using elastic bands, hinges, or flexible shafts.

[0047] Specifically, a detachable connection is provided between two circumferentially adjacent protective plates 10, allowing operators to quickly disassemble specific areas for maintenance or repositioning, avoiding the efficiency loss caused by traditional overall disassembly. Flexible connections, such as elastic ropes or flexible hinges, are used between other adjacent protective plates 10. These flexible connections have stronger deformation capabilities, better matching the angles or bends required during cable laying. The combination of these two connection methods ensures ease of assembly while also improving the ability to handle bends and angles during dynamic laying through the buffering effect of the flexible connections.

[0048] Preferably, the flexible connection is an elastic rope connection. Elastic ropes are low in cost, flexible, easily deformable, and not easily broken, making them well-suited for cable laying requirements. Preferably, as shown in Figure 3, the protective plate 10 can also be spliced ​​into a semi-circular protective structure. The semi-circular structure is directly fastened to the upper part of the installed cable, and the bottom can be secured and limited by ropes, facilitating the organization of internal cables.

[0049] This application further proposes dividing a plurality of protection plates 10 into multiple groups, each group of protection plates 10 including at least two protection plates 10, the protection plates 10 in each group being connected sequentially along the circumference of the cable, and adjacent groups of protection plates 10 being hinged along the length of the cable.

[0050] One set of protection plates 10 is circumferentially connected to form a closed inner cavity 30. However, the length of one set is sometimes insufficient to meet the cable length requirements. Therefore, multiple sets of protection plates 10 can be assembled along the cable extension direction. The circumferential connection method ensures that each protection unit completely covers the cable, while multiple sets meet the cable laying length requirements. Specifically, each set can be connected by a hinge structure, allowing relative rotation angles between adjacent sets when subjected to external forces. Adjacent sets of protection plates 10 form a flexible node through the hinge structure. When the cable passes through a bending path, the hinge node allows relative rotation between adjacent sets of protection plates 10, causing the entire device to continuously bend according to the cable shape.

[0051] This application further proposes that the protection plate 10 includes a first protection plate and a second protection plate, the second protection plate is disposed between the first protection plates, and the first protection plates between two adjacent sets of protection plates 10 are hinged to each other.

[0052] Using the above technical solution, the protective plate 10 that is hinged between the two sets of protective plates 10 is called the first protective plate. Each set of protective plates 10 does not need to be hinged to each other. Only the first protective plates at the corresponding positions need to be hinged to complete the hinge of the two sets of protective plates 10. For example, when the number of protective plates 10 in a set is small, one of the protective plates 10 in each of the two adjacent sets can be selected as the first protective plate for connection. When the number of protective plates 10 in a set is large, several protective plates 10 can be connected as the first protective plates at intervals. In this way, it is not necessary to connect each corresponding protective plate 10 between the two adjacent sets of protective plates 10, which reduces the installation time of the laying device and improves the laying efficiency.

[0053] Preferably, as shown in Figures 4 and 7, in this embodiment, the protective plates 10 are connected in the circumferential and longitudinal directions by hinges, and each group of protective plates 10 is connected by hinges. The hinges can be fixed to the side wall of the protective plate 10 by welding, interference fit, pin or bolt, and are located close to the inner cavity 30.

[0054] This application further proposes a technical solution where the protective plate 10 adopts an arc-shaped structure.

[0055] Among them, the arc-shaped protective plate 10 refers to a plate-shaped component with a curved profile. Specifically, it can be implemented using an arc-shaped metal plate with a curvature radius matching the outer diameter of the cable. The curvature is more adapted to the circumferential shape of the cable, which can provide better wrapping support for the cable. As shown in Figures 5 to 7, a flat protective plate can also be used.

[0056] As shown in Figure 8, this application further proposes that the protective plate 10 includes a first retainer 111 and a second retainer 112. The first retainer 111 has a plurality of slots 113, and the second retainer 112 has a plurality of openings 114. The rolling element 12 is installed in the slots 113, passes through the openings 114, and is partially exposed outside the openings 114. The diameter of the rolling element 12 is greater than the radial length of the openings 114.

[0057] The first cage 111 refers to a split plate with axial installation space, which can be a metal plate or plastic plate with cylindrical grooves or U-shaped grooves. Its function is to provide a space for the rolling element 12. The second cage 112 refers to a split plate with radial limiting, which can be a metal plate or plastic plate with circular through holes. Its function is to form circumferential constraints on the rolling element 12 through the opening 114. The diameter of the rolling element 12 is greater than the height formed by the opening and the groove, and it is exposed on the outside of the protective plate.

[0058] Specifically, the groove 113 of the first cage 111 can be slightly deeper than the radius of the rolling element 12, allowing the rolling element 12 to roll freely even after being partially embedded. The diameter of the opening 114 of the second cage 112 can be smaller than the diameter of the rolling element 12. When the two are stacked, the edge of the opening 114 forms point contact with the surface of the rolling element 12, confining the rolling element 12 within the groove and opening, ensuring that the rolling element 12 will not come out. During cable dragging, the rolling element 12 rotates under pressure, causing rolling contact between the cable and the protective plate 10. The structure of the split protective plate 10 achieves boltless fixation of the rolling element 12 through mechanical constraints, while maintaining the overall structural integrity of the protective plate 10. Preferably, the rolling element 12 is a ball bearing 13.

[0059] As shown in Figure 9, this application further proposes that the surface of the protective plate 10 is provided with a groove 115, and the two sides of the groove 115 are provided with shaft holes 116. The rolling element 12 includes a roller 121 and a rotating shaft 122 connected to both sides of the roller 121. The end of the rotating shaft 122 away from the roller 121 is installed in the shaft hole 116. The rotating shaft 122 is rotatably connected to the shaft hole 116. The side of the roller 121 protrudes from the groove 115.

[0060] The groove 115 refers to the recessed area formed on the surface of the protective plate 10, used to accommodate the main body of the rolling element 12 and restrict its axial displacement. The shaft hole 116 refers to the symmetrical circular through holes on both sides of the groove 115, which can be formed by machining, used to fix the rotating shaft 122 and provide it with rotational support. The rotating shaft 122 refers to the cylindrical component connected to both ends of the roller 121, whose diameter matches the size of the shaft hole 116 to achieve a clearance fit, ensuring that the rotating shaft 122 can rotate freely within the shaft hole 116. The roller 121 refers to a cylindrical or drum-shaped rolling component, which can be made of smooth nylon or metal, and whose diameter is greater than the depth of the groove 115, so that the side of the roller 121 protrudes from the surface of the groove 115 for direct contact with the cable.

[0061] Specifically, when the cable is dragged on the surface of the protective plate 10, the roller 121 rotates due to the movement of the cable, and the rotating shaft 122 rotates around its own axis within the shaft hole 116. The contact between the cable and the roller 121 changes from sliding friction to rolling friction, effectively reducing friction. The lateral constraint of the groove 115 on the roller 121 prevents it from shifting during cable dragging, and the clearance fit between the shaft hole 116 and the rotating shaft 122 ensures that the rotational resistance of the roller 121 is minimized. The design of the roller 121 protruding from the groove 115 ensures that the cable only contacts the roller 121, avoiding direct friction with the surface of the protective plate 10.

Claims

1. A cable laying auxiliary device, characterized in that, It includes at least a plurality of protective plates and a plurality of connecting members. The plurality of protective plates are connected to each other through the connecting members, and the plurality of protective plates are connected by the connecting members to form an openable and closable structure. The plurality of protective plates enclose an inner cavity. Rolling elements are installed on the inner surface and / or outer surface of the protective plates, and at least some of the rolling elements are provided to protrude from the surface of the protective plates.

2. The cable laying auxiliary device according to claim 1, characterized in that, Two of them The protective plates that are adjacent in the circumferential direction are detachably connected, while the other two adjacent protective plates in the circumferential direction are hinged together.

3. The cable laying auxiliary device according to claim 1, characterized in that, Both ends of the protective plate are detachably connected to the adjacent protective plates.

4. The cable laying auxiliary device according to claim 1, characterized in that, Two of them The protective plates that are adjacent in the circumferential direction are detachably connected, while the other two adjacent protective plates in the circumferential direction are connected by a flexible connection.

5. The cable laying auxiliary device according to claim 4, characterized in that, The flexible connection is a flexible rope connection.

6. The cable laying auxiliary device according to claim 1, characterized in that, The protection plates are divided into multiple groups, each group of protection plates includes at least two protection plates, the protection plates in each group are connected sequentially along the circumference of the cable, and adjacent groups of protection plates are hinged along the length of the cable.

7. The cable laying auxiliary device according to claim 6, characterized in that, The protective plate includes a first protective plate and a second protective plate, with the second protective plate disposed between the first protective plates. The first protective plates between two adjacent sets of protective plates are hinged or flexibly connected to each other.

8. The cable laying auxiliary device according to claim 1, characterized in that, The protective plate is an arc-shaped protective plate.

9. The cable laying auxiliary device according to claim 1, characterized in that, The protective plate includes a first retainer and a second retainer. The first retainer has a plurality of slots, and the second retainer has a plurality of openings. The rolling element is mounted in the slot, passes through the opening, and is partially exposed outside the opening. The diameter of the rolling element is greater than the radial length of the opening.

10. A cable laying auxiliary device according to claim 1, characterized in that, The protective plate has a groove on its surface, and shaft holes are correspondingly formed on both sides of the groove. The rolling element includes a roller and a rotating shaft connected to both sides of the roller. The end of the rotating shaft away from the roller is installed in the shaft hole. The rotating shaft is rotatably connected to the shaft hole. The side of the roller protrudes from the groove.

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