Bridge cable laying guide and method of use thereof

Abstract

This invention belongs to the field of electromechanical installation technology and discloses a cable tray laying guide device and its usage method. The switch-type magnetic base of the cable tray laying guide device allows for easy removal of the entire device after the magnetism is turned off, eliminating the need for forceful manipulation. This saves effort and avoids pinching fingers. Furthermore, the device does not attract iron filings in its non-magnetic state, thus preventing scratches on the galvanized layer or anti-corrosion paint of the cable tray surface during disassembly. Adjacent cable tray laying guide devices can be modularly combined using connectors, extending the guiding path and improving the adaptability of the guiding angle, effectively increasing the laying efficiency of cable trays. The entire operation of the cable tray laying guide device is convenient and safe. The modular combination of the cable tray laying guide device can adapt to complex routing structures such as horizontal bends, vertical bends, or tees in cable trays, effectively improving the laying efficiency of cable trays.

Description

Technical Field

[0001] This invention relates to the field of electromechanical installation technology, and in particular to a cable tray laying guide device and its usage method. Background Technology

[0002] In construction scenarios such as building electrical installations, chemical pipeline cable trays, and subway tunnels, cables typically need to be laid inside cable trays. To prevent damage to the cable insulation layer caused by friction between the cable and the edges of the cable tray during dragging, construction workers usually install multiple guide pulleys at intervals along the corners or straight sections of the cable tray to assist in cable laying.

[0003] Currently, guide pulleys mostly use hook-type pulleys or bolt-clamped pulleys. Hook-type pulleys require flanged edges on the cable tray for installation, and are prone to wobbling and falling off after installation. Bolt-clamped pulleys require drilling holes in the cable tray or using clamps, which can damage the galvanized layer or anti-corrosion paint on the cable tray surface, leading to rust later. Furthermore, installation and disassembly are cumbersome, requiring tools such as wrenches. Moreover, cable trays have complex layouts, typically including horizontal bends, vertical bends, and tees. Existing guide pulleys are mostly fixed in direction or can only swing within a single plane, requiring frequent disassembly and reassembly for multi-angle changes, resulting in low efficiency. A small number of magnetic bases for fixing guide pulleys are available on the market, but these mostly use permanent magnets for direct attraction. Removing them requires forceful prying, which is not only laborious but also prone to pinching fingers. Additionally, the magnetism remains, attracting iron filings that can scratch the cable tray's paint.

[0004] Therefore, there is an urgent need to propose a cable tray laying guide device and its usage method to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a cable tray laying guide device and its usage method to solve the technical problems of existing permanent magnet adsorption guide pulleys being difficult to remove and iron filings easily scratching the paint surface of the cable tray.

[0006] To achieve this objective, the present invention adopts the following technical solution: In a first aspect, the present invention provides a cable tray laying guide device, comprising: The mounting frame includes a horizontally arranged base plate and two upright plates erected on opposite sides of the base plate along a first horizontal direction. The extension surfaces of the two upright plates are perpendicular to the first horizontal direction. The base plate and the two upright plates form a U-shaped frame structure. The base plate has a reserved mounting hole that penetrates through itself in a vertical direction. The base plate is also provided with a limiting mounting component, which forms a limiting space above the reserved mounting hole. A switchable magnetic base, wherein the switchable magnetic base is installed in the limiting space and its magnetic surface is located on one side of the reserved mounting hole, and the magnetic on / off state of the switchable magnetic base is adjustable; A pulley assembly is rotatably connected between the two upright plates and located above the limiting mounting member, and the rotation axis of the pulley assembly is perpendicular to the upright plate; The connector is detachably connected to the upright plate, and two adjacent cable tray laying guide devices can be modularly combined through the connector.

[0007] Optionally, the reserved mounting hole is a rectangular mounting hole, and a limiting strip is provided in the reserved mounting hole. The limiting strip extends along the first horizontal direction and divides the reserved mounting hole into two independent mounting spaces. The limiting strip is made of a non-magnetic material. A magnetic circuit isolation groove is provided on the magnetic surface of the switch-type magnetic base. When the switch-type magnetic base is installed in the limiting space, the limiting strip can be embedded in the magnetic circuit isolation groove.

[0008] Optionally, the limiting mounting component includes a vertical limiting part and a horizontal limiting part connected to each other. The vertical limiting part is connected to the base plate and located on one side of the reserved mounting hole along the first horizontal direction. The horizontal limiting part is located above the reserved mounting hole. The switchable magnetic base also includes a switch knob. When the switchable magnetic base is installed in the limiting space, the switch knob is located on the side of the switchable magnetic base away from the vertical limiting part along the first horizontal direction, and the switch knob can extend along the first horizontal direction and protrude from the upright plate.

[0009] Optionally, the cable tray laying guide device has the connector detachably connected to at least one of the upright plates along the first horizontal direction, and two connectors are detachably connected to each upright plate. The upright plate has two first through holes that penetrate itself along the first horizontal direction, and the two first through holes are spaced apart along the horizontal direction. The connector has a second through hole. The cable tray laying guide device also includes a wing bolt and a nut. The wing bolt can pass through the second through hole and the first through hole at the same time and be screwed to the nut to detachably connect the connector to the upright plate. The connectors of two adjacent cable tray laying guide devices are hinged by a damping suspension pivot hinge.

[0010] Optionally, the pulley assembly includes a pulley body and a continuous rotation damper, the pulley body being rotatably connected to the vertical plate via the continuous rotation damper, and the damping force of the continuous rotation damper being adjustable.

[0011] Optionally, the surface of the pulley body is provided with three arc-shaped grooves of different widths, the widths of the three arc-shaped grooves being 10mm, 20mm and 30mm respectively.

[0012] Optionally, the pulley body is provided with retractable anti-deviation baffles at both ends along the first horizontal direction. The length of the retractable anti-deviation baffle is adjustable in the range of 0mm to 50mm, and the material of the retractable anti-deviation baffle is plastic.

[0013] Optionally, a lead foil protective layer is adhered to the outer periphery of the switchable magnetic base, and the lead foil protective layer is configured to block radioactive rays.

[0014] Optionally, the bottom surface of the base plate is provided with an anti-slip rubber layer, and the anti-slip rubber layer has clearance holes that are the same shape and position as the reserved mounting holes.

[0015] Secondly, the present invention also provides a method for using a cable tray laying guide device, wherein the cable tray laying is completed using the aforementioned cable tray laying guide device, and the method for using the cable tray laying guide device further includes the following steps: S1. At the beginning of the cable, a cable mesh sleeve is attached, and the other end of the cable mesh sleeve is connected to a steel wire rope. The steel wire rope is laid on the cable laying route in the cable tray, and the other end of the steel wire rope is connected to the winch. S2. At least one cable laying guide device is placed at the entrance, straight section, corner, 45° bend and 90° bend of the cable tray, and the switch-type magnetic base of the cable laying guide device is adjusted to the magnetic open state so as to be attracted to the cable tray. S3. The steel wire rope on the cable laying route is connected to the pulley assembly of the cable laying guide device of the cable tray; S4. Start the winch to make the wire rope move the cable in the cable tray, and complete the laying of the cable in the cable tray under the guidance of the cable laying guide device. S5. After the cable laying is completed, adjust the switch-type magnetic base of all the cable tray cable laying guide devices to the magnetic off state and remove them from the cable tray.

[0016] The beneficial effects of this invention are: Firstly, this invention provides a cable tray laying guide device. Compared to permanent magnet adsorption-type guide pulleys, this cable tray laying guide device features a switchable magnetic base that allows for easy removal of the entire device after the magnetism is turned off, eliminating the need for forceful manipulation. This saves effort and avoids pinching fingers. Furthermore, the device does not attract iron filings in its non-magnetic state, preventing scratches on the galvanized layer or anti-corrosion paint of the cable tray surface during disassembly. Further, adjacent cable tray laying guide devices can be modularly combined using connectors. The angle between adjacent cable tray laying guide devices can be adjusted via these connectors, thereby extending the guiding path and improving the adaptability of the guiding angle. This allows the cable tray laying guide device to adapt to complex routing structures such as horizontal bends, vertical bends, or tees in the cable tray, avoiding frequent disassembly and angle adjustments when encountering cable trays with multiple angle changes, effectively improving the laying efficiency of cable trays. Secondly, the present invention also provides a method for using a cable tray laying guide device. This method makes the entire process of laying cable trays convenient and safe. It also effectively avoids scratching the galvanized layer or anti-corrosion paint on the surface of the cable tray during the disassembly of the cable tray laying guide device. The modular combination of the cable tray laying guide device can adapt to complex routing structures such as horizontal bends, vertical bends, or tees of the cable tray, avoiding the need for frequent disassembly and angle adjustment of the guide device when encountering cable trays with multiple angle changes, thus effectively improving the laying efficiency of cable trays. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the cable tray laying guide device described in an embodiment of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the cable tray laying guide device described in an embodiment of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the mounting bracket described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the switchable magnetic base according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the pulley assembly described in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the connector described in an embodiment of the present invention; Figure 7 This is a schematic diagram of the modular assembly of the cable tray laying guide device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the installation and use described in the embodiments of the present invention. Figure 1 ; Figure 9This is a schematic diagram of the installation and use described in the embodiments of the present invention. Figure 2 ; Figure 10 This is a schematic diagram of the installation and use described in the embodiments of the present invention. Figure 3 ; Figure 11 This is a schematic diagram of the installation and use described in the embodiments of the present invention. Figure 4 ; Figure 12 This is a schematic diagram of the installation and use described in the embodiments of the present invention. Figure 5 .

[0018] In the picture: 1. Mounting bracket; 11. Base plate; 111. Reserved mounting hole; 112. Limiting mounting component; 1121. Vertical limiting part; 1122. Horizontal limiting part; 113. Limiting strip; 12. Vertical plate; 121. First through hole; 2. Switch-type magnetic base; 21. Switch knob; 3. Pulley assembly; 31. Pulley body; 32. Continuous rotation damper; 4. Connecting component; 41. Second through hole; 100. Cable; 200. Cable tray. Detailed Implementation

[0019] 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 components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] Firstly, such as Figures 1 to 7 As shown, this invention provides a cable tray laying guide device, including a mounting frame 1, a switchable magnetic base 2, a pulley assembly 3, and a connector 4. The mounting frame 1 includes a horizontally arranged base plate 11 and two upright plates 12 erected on opposite sides of the base plate 11 along a first horizontal direction (X direction in the figure). The extension surfaces of the two upright plates 12 are perpendicular to the first horizontal direction, and the base plate 11 and the two upright plates 12 form a U-shaped frame structure. The base plate 11 has a pre-reserved mounting hole 111 extending vertically through itself, and a limiting mounting member 112 is also provided on the base plate 11, forming a limiting space above the pre-reserved mounting hole 111. The switchable magnetic base 2 is installed within the limiting space, with its magnetic surface located on one side of the pre-reserved mounting hole 111. The magnetic on / off state of the switchable magnetic base 2 is adjustable. The pulley assembly 3 is rotatably connected between the two upright plates 12 and located above the limiting mounting member 112. The rotation axis of the pulley assembly 3 is perpendicular to the upright plates 12. The connector 4 is detachably connected to the upright plate 12, and the cable laying guide devices of two adjacent cable trays can be modularly combined through the connector 4.

[0024] Specifically, the cable tray laying guide device can be flexibly arranged at designated positions on the cable tray according to cable laying requirements, and its installation and removal on the cable tray can be achieved by adjusting the magnetic on / off state of the switch-type magnetic base 2. After the cable tray laying guide device is installed on the cable tray, the pulley assembly 3 can provide guidance for the cable laying within the cable tray, thereby effectively preventing the cable from rubbing against the edges of the cable tray during dragging and damaging the cable insulation layer. Compared with hook-type guide pulleys, this cable tray laying guide device does not require the cable tray to have a flanged structure, making it more adaptable and improving stability. Compared with bolt-clamped guide pulleys, there is no need to drill holes or use clamps on the cable tray, avoiding damage to the galvanized layer or anti-corrosion paint on the surface of the cable tray, thus preventing the cable tray from rusting later. Moreover, this cable tray laying guide device can be installed and removed by manually adjusting the magnetic on / off state of the switch-type magnetic base 2, which is highly efficient and requires no additional tools. Compared to permanent magnet adsorption guide pulleys, the switchable magnetic base 2 of this cable tray laying guide device allows for easy removal of the entire device after the magnetism is turned off, eliminating the need for forceful manipulation. This saves effort and avoids pinching fingers. Furthermore, the device does not attract iron filings in its non-magnetic state, preventing scratches on the galvanized layer or anti-corrosion paint of the cable tray surface during disassembly. Moreover, adjacent cable tray laying guide devices can be modularly combined via connector 4. The angle between adjacent cable tray laying guide devices can be adjusted via connector 4, thereby extending the guiding path and improving the adaptability of the guiding angle. This allows the cable tray laying guide device to adapt to complex structures such as horizontal bends, vertical bends, or tees in the cable tray, avoiding frequent disassembly and angle adjustments when encountering cable trays with multiple angle changes, effectively improving the laying efficiency of cable trays.

[0025] Furthermore, such as Figure 3 As shown, the reserved mounting hole 111 is a rectangular mounting hole. A limiting strip 113 is provided within the reserved mounting hole 111. The limiting strip 113 extends along the first horizontal direction and divides the reserved mounting hole 111 into two independent mounting spaces. The limiting strip 113 is made of a non-magnetic material. A magnetic circuit isolation groove is provided on the magnetic surface of the switch-type magnetic base 2. When the switch-type magnetic base 2 is installed in the limiting space, the limiting strip 113 can be embedded in the magnetic circuit isolation groove. The rectangular reserved mounting hole 111 can adapt to the outer contour of the magnetic surface of the switch-type magnetic base 2, enabling rapid alignment and anti-displacement of the switch-type magnetic base 2. The magnetic surface of the switch-type magnetic base 2 is usually provided with a V-shaped or strip-shaped magnetic circuit isolation groove. When the switch-type magnetic base 2 is installed in the limiting space, the limiting strip 113 can be embedded in the magnetic circuit isolation groove, further limiting the position of the switch-type magnetic base 2. The limiting strip 113 is made of non-magnetic material, which can avoid interfering with the magnetic circuit of the switch-type magnetic base 2 and ensure the magnetic strength of the switch-type magnetic base 2.

[0026] Optionally, such as Figures 2 to 4As shown, the limiting mounting component 112 includes a vertical limiting part 1121 and a horizontal limiting part 1122 connected to each other. The vertical limiting part 1121 is connected to the base plate 11 and located on one side of the reserved mounting hole 111 along the first horizontal direction. The horizontal limiting part 1122 is located above the reserved mounting hole 111. The switch-type magnetic base 2 also includes a switch knob 21. When the switch-type magnetic base 2 is installed in the limiting space, the switch knob 21 is located on the side of the switch-type magnetic base 2 away from the vertical limiting part 1121 along the first horizontal direction, and the switch knob 21 can extend along the first horizontal direction and protrude from the upright plate 12. The vertical limiting part 1121 can limit the switch-type magnetic base 2 in the first horizontal direction, and the horizontal limiting part 1122 can limit the switch-type magnetic base 2 in the vertical direction, thereby improving the installation stability and reliability of the switch-type magnetic base 2. The switch knob 21 extends along the first horizontal direction and protrudes from the vertical plate 12. The operator can easily turn the switch knob 21 on one side of the vertical plate 12 to adjust the magnetic on / off state of the switch-type magnetic base 2, which improves the ease of operation of the cable tray laying guide device.

[0027] For example, such as Figure 1 , Figure 3 and Figure 6As shown, the cable tray laying guide device has connectors 4 detachably connected to at least one vertical plate 12 along the first horizontal direction, and two connectors 4 are detachably connected to each vertical plate 12. The vertical plate 12 has two first through holes 121 extending through itself along the first horizontal direction, spaced apart horizontally. The connectors 4 have second through holes 41. The cable tray laying guide device also includes a wing bolt and a nut. The wing bolt can pass through both the second through hole 41 and the first through hole 121 and be screwed into the nut to detachably connect the connectors 4 to the vertical plate 12. The connectors 4 of adjacent cable tray laying guide devices are hinged together by a damping suspension pivot hinge. The cable tray laying guide device can have connectors 4 installed on either side of the vertical plates 12 along the first horizontal direction or on one side of the vertical plate 12, facilitating modular assembly between cable tray laying guide devices. Each upright plate 12 has two detachable connectors 4, allowing one cable tray laying guide device to be modularly combined with two other cable tray laying guide devices simultaneously, improving the flexibility of modular combination of cable tray laying guide devices. The connectors 4 are detachably connected to the upright plate 12 via wing bolts and nuts, allowing for installation and removal of the connectors 4 without the need for additional tools, improving the ease of installation and removal. Adjacent cable tray laying guide devices have their connectors 4 hinged together via a damping hovering pivot hinge, enabling flexible angle adjustment and a hovering state for adjacent modularly combined cable tray laying guide devices. This adapts to cable tray structures with multiple angles, including horizontal bends, vertical bends, 45° bends, and 90° bends, further enhancing the ease of use and adaptability of the cable tray laying guide devices. The damping hovering pivot hinge is existing technology and will not be described in detail here.

[0028] Optionally, such as Figure 2 and Figure 5 As shown, the pulley assembly 3 includes a pulley body 31 and a continuous rotation damper 32. The pulley body 31 is rotatably connected to the vertical plate 12 via the continuous rotation damper 32, and the damping force of the continuous rotation damper 32 is adjustable. Operators can adjust the damping force of the continuous rotation damper 32 according to the cable laying speed or cable weight, thereby adjusting the damping force of the pulley body 31. This prevents the pulley body 31 from spinning freely or the cable from swinging or deviating, ensuring uniform and stable cable laying, and reducing frictional impact damage to the cable insulation layer.

[0029] Furthermore, the surface of the pulley body 31 is provided with three arc-shaped grooves of different widths, namely 10mm, 20mm, and 30mm. These three different width arc-shaped grooves can accommodate cables with diameters of 10mm, 20mm, and 30mm respectively, eliminating the need to replace the pulley body 31 for different cable diameters and improving the versatility of the cable tray laying guide device. The arc-shaped grooves can conform to the outer wall of the cable, increasing the contact area with the cable and dispersing pressure, preventing excessive localized stress on the cable and damage to the insulation layer, thus enhancing the guiding and protective effect of the cable tray laying guide device.

[0030] Optionally, retractable anti-deviation baffles are provided at both ends of the pulley body 31 along the first horizontal direction. The length of the retractable anti-deviation baffles is adjustable within the range of 0mm to 50mm, and the material of the retractable anti-deviation baffles is plastic. The retractable anti-deviation baffles can adjust their length according to the cable diameter to form a lateral barrier, preventing the cable from coming out of the arc-shaped groove of the pulley body 31 or deviating to the left or right during the laying process, ensuring accurate laying route. The plastic baffles are soft and will not scratch the cable insulation layer when in contact with the cable, taking into account both protection and safety. The 0mm to 50mm extension range is suitable for multiple specifications of cables, further improving the versatility of the cable tray laying guide device.

[0031] For example, a lead foil protective layer is adhered to the outer periphery of the switch-type magnetic base 2. The lead foil protective layer is configured to block radioactive rays. The lead foil protective layer can effectively block the magnetic interference of radioactive rays on the switch-type magnetic base 2, making the cable tray laying guide device suitable for construction scenarios with radiation risks, such as nuclear power plants, hospital radioactive laboratories, or special sections of subway tunnels.

[0032] In one embodiment, the bottom surface of the base plate 11 is provided with an anti-slip rubber layer, and the anti-slip rubber layer has clearance holes with the same shape and corresponding position as the reserved mounting holes 111. The anti-slip rubber layer on the bottom surface of the base plate 11 can increase the friction between the mounting bracket 1 and the cable tray contact surface. Combined with the magnetic adsorption of the switch-type magnetic base 2, it further prevents the cable tray cable laying guide device from slipping and shaking, ensuring accurate cable guiding and positioning. The anti-slip rubber layer flexibly contacts the cable tray surface, avoiding direct friction and scratches on the anti-corrosion paint or galvanized layer of the cable tray by the metal base plate 11. At the same time, it can also play a buffering and shock absorption role, avoiding mechanical damage to the cable tray during the installation and disassembly of the cable tray cable laying guide device. The reserved clearance holes in the anti-slip rubber layer ensure that the magnetic adsorption of the switch-type magnetic base 2 is not affected.

[0033] In this embodiment, the structure and adjustment principle of the switchable magnetic base 2 are existing technologies and will not be described in detail here. The mounting frame 1 is formed by bending a galvanized steel plate with a length of 360mm, a width of 50mm, and a thickness of 3mm. The limiting mounting component 112 is a galvanized steel plate welded to the mounting frame 1, and the reserved mounting hole 111 is a rectangular mounting hole with a length of 40mm and a width of 30mm. The outer contour of the switchable magnetic base 2 is a cuboid with a length of 40mm, a width of 30mm, and a height of 35mm, which is bonded to the limiting mounting component 112 with adhesive. The pulley body 31 is cut from a nylon column, and its length along the first horizontal direction is 120mm. The structure and working principle of the continuous rotation damper 32 are existing technologies and will not be described in detail here. The connecting component 4 is a galvanized steel plate with a length of 80mm, a width of 15mm, and a height of 3mm. The diameter of the first through hole 121 and the second through hole 41 is both 8mm.

[0034] Secondly, such as Figures 8 to 12 As shown, the present invention also provides a method for using a cable tray laying guide device. The cable tray laying guide device is used to complete the cable tray laying. The method further includes the following steps: S1, a cable mesh sleeve is attached to the beginning of the cable 100, and a steel wire rope is connected to the other end of the cable mesh sleeve. The steel wire rope is laid along the cable laying route within the cable tray 200, and the other end of the steel wire rope is connected to a winch; S2, at least one cable tray laying guide device is placed at the entrance, straight sections, corners, 45° bends, and 90° bends of the cable tray 200. S3. Adjust the switch-type magnetic base 2 of the cable tray laying guide device to the magnetic open state so that it can be attracted to the cable tray 200; S4. Connect the steel wire rope on the cable laying route to the pulley assembly 3 of the cable tray laying guide device; S5. Start the winch so that the steel wire rope can drive the cable 100 to move within the cable tray 200, and complete the laying of the cable 100 within the cable tray 200 under the guidance of the cable tray laying guide device; S6. After the cable 100 is laid, adjust the switch-type magnetic base 2 of all cable tray laying guide devices to the magnetic closed state and remove them from the cable tray 200. The cable tray laying guide device is easy to operate and highly safe throughout the entire cable tray laying process. It effectively avoids scratching the galvanized layer or anti-corrosion paint on the surface of the cable tray 200 during disassembly. The modular cable tray laying guide device can adapt to complex routing structures such as horizontal bends, vertical bends, or tees of the cable tray 200, avoiding the need for frequent disassembly and angle adjustment when encountering cable trays with multiple angle changes, thus effectively improving the laying efficiency of cable trays.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A cable routing guide for a bridge, characterized in that include: Mounting bracket (1), the mounting bracket (1) includes a horizontally arranged base plate (11) and two upright plates (12) erected on opposite sides of the base plate (11) along a first horizontal direction. The extension surfaces of the two upright plates (12) are perpendicular to the first horizontal direction. The base plate (11) and the two upright plates (12) form a U-shaped frame structure. The base plate (11) has a reserved mounting hole (111) that penetrates itself in the vertical direction. The base plate (11) is also provided with a limiting mounting component (112). The limiting mounting component (112) forms a limiting space above the reserved mounting hole (111). A switchable magnetic base (2) is installed in the limiting space and its magnetic surface is located on one side of the reserved mounting hole (111). The magnetic on / off state of the switchable magnetic base (2) is adjustable. Pulley assembly (3), the pulley assembly (3) is rotatably connected between the two upright plates (12) and located above the limiting mounting member (112), the rotation axis of the pulley assembly (3) is perpendicular to the upright plate (12); Connector (4), which is detachably connected to the upright plate (12), and two adjacent cable tray laying guide devices can be modularly combined through the connector (4).

2. A bridge cable routing guide according to claim 1, characterised in that, The reserved mounting hole (111) is a rectangular mounting hole. A limiting strip (113) is provided in the reserved mounting hole (111). The limiting strip (113) extends along the first horizontal direction and divides the reserved mounting hole (111) into two independent mounting spaces. The limiting strip (113) is made of non-magnetic material. A magnetic circuit isolation groove is provided on the magnetic surface of the switch-type magnetic base (2). When the switch-type magnetic base (2) is installed in the limiting space, the limiting strip (113) can be embedded in the magnetic circuit isolation groove.

3. The cable tray laying guide device according to claim 2, characterized in that, The limiting installation component (112) includes a vertical limiting part (1121) and a horizontal limiting part (1122) connected to each other. The vertical limiting part (1121) is connected to the base plate (11) and is located on one side of the reserved mounting hole (111) along the first horizontal direction. The horizontal limiting part (1122) is located above the reserved mounting hole (111). The switch-type magnetic base (2) also includes a switch knob (21). When the switch-type magnetic base (2) is installed in the limiting space, the switch knob (21) is located on the side of the switch-type magnetic base (2) away from the vertical limiting part (1121) along the first horizontal direction, and the switch knob (21) can extend along the first horizontal direction and protrude from the upright plate (12).

4. The cable tray laying guide device according to claim 1, characterized in that, The cable tray laying guide device has a connector (4) detachably connected to at least one of the upright plates (12) along the first horizontal direction, and two connectors (4) are detachably connected to each upright plate (12). The upright plate (12) has two first through holes (121) that penetrate itself along the first horizontal direction. The two first through holes (121) are spaced apart along the horizontal direction. The connector (4) has a second through hole (41). The cable tray laying guide device also includes a wing bolt and a nut. The wing bolt can pass through the second through hole (41) and the first through hole (121) at the same time and be screwed to the nut to detachably connect the connector (4) to the upright plate (12). The connectors (4) of two adjacent cable tray laying guide devices are hinged by a damping suspension pivot hinge.

5. The cable tray laying guide device according to claim 1, characterized in that, The pulley assembly (3) includes a pulley body (31) and a continuous rotation damper (32). The pulley body (31) is rotatably connected to the vertical plate (12) through the continuous rotation damper (32). The damping force of the continuous rotation damper (32) is adjustable.

6. The cable tray laying guide device according to claim 5, characterized in that, The surface of the pulley body (31) is provided with three arc-shaped grooves of different widths, the widths of the three arc-shaped grooves being 10mm, 20mm and 30mm respectively.

7. The cable tray laying guide device according to claim 5, characterized in that, The pulley body (31) is provided with retractable anti-deviation baffles at both ends along the first horizontal direction. The length of the retractable anti-deviation baffle is adjustable in the range of 0mm to 50mm, and the material of the retractable anti-deviation baffle is plastic.

8. The cable tray laying guide device according to any one of claims 1-7, characterized in that, The outer periphery of the switch-type magnetic base (2) is bonded with a lead foil protective layer, which is configured to block radioactive rays.

9. The cable tray laying guide device according to any one of claims 1-7, characterized in that, The bottom surface of the base plate (11) is provided with an anti-slip rubber layer, and the anti-slip rubber layer has a clearance hole with the same shape and position as the reserved installation hole (111).

10. A method for using a cable tray laying guide device, characterized in that, The cable tray laying guide device as described in any one of claims 1-9 is used to complete the cable tray laying, and the method of using the cable tray laying guide device further includes the following steps: S1. At the beginning of the cable (100), a cable mesh sleeve is attached, and the other end of the cable mesh sleeve is connected to a wire rope. The wire rope is laid on the cable laying route in the cable tray (200), and the other end of the wire rope is connected to the winch. S2. At least one cable laying guide device is placed at the entrance, straight section, corner, 45° bend and 90° bend of the cable tray (200), and the switch-type magnetic base (2) of the cable laying guide device is adjusted to the magnetic open state so as to be attracted to the cable tray (200). S3. The steel wire rope on the cable laying route is connected to the pulley assembly (3) of the cable laying guide device of the cable tray. S4. Start the winch to make the wire rope drive the cable (100) to move in the cable tray (200), and complete the laying of the cable (100) in the cable tray (200) under the guidance of the cable laying guide device of the cable tray; S5. After the cable (100) is laid, adjust the switch-type magnetic base (2) of all the cable tray laying guide devices to the magnetic off state and remove it from the cable tray (200).

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