Cable conveying device and boarding bridge

Abstract

The utility model relates to the technical field of boarding bridges, in particular to a cable conveying device and a boarding bridge. The cable conveying device comprises a first bracket, a second bracket, a first drag chain and a second drag chain, the first end of the first bracket is used for being connected with a first channel of the boarding bridge, and the second end of the first bracket is slidably connected with the second bracket; the first end of the second bracket is used for being connected with a second channel of the boarding bridge, and the second end of the second bracket is used for being slidably connected with a third channel of the boarding bridge. The first drag chain is horizontally arranged on one side of the interior of the first bracket in the width direction of the first bracket; the second bracket can be located in the first bracket so that at least part of the second drag chain can be located in the first bracket, the second drag chain is horizontally arranged, and the second drag chain and the first drag chain are arranged in the width direction of the first bracket, so that the internal space of the first bracket is fully utilized, and the overall height of the cable conveying device is reduced; and the transportation cost is saved.

Description

Technical Field

[0001] This application relates to the field of boarding bridge technology, and in particular to a cable conveying device and a boarding bridge. Background Technology

[0002] Existing three-section boarding bridge cable conveyor systems typically require significant height space to allow for cable transport within the bridge body. This is necessary to accommodate the stacking of brackets and cable chains within the cable conveyor system when the three sections are fully retracted, while also providing room for cable bending. However, the considerable height of the cable conveyor system results in a large overall volume, impacting both transport efficiency and costs. Utility Model Content

[0003] The purpose of this application is to provide a cable conveying device and a boarding bridge to reduce the height of the cable conveying device and save transportation costs.

[0004] To achieve the above objectives, this application provides a cable conveying device, including a first bracket, a second bracket, a first cable chain, and a second cable chain. A first end of the first bracket is connected to a first channel of a boarding bridge, and a second end of the first bracket is slidably connected to the second bracket. A first end of the second bracket is connected to a second channel of the boarding bridge, and a second end of the second bracket is slidably connected to a third channel of the boarding bridge. The first, second, and third channels of the boarding bridge are sequentially connected from the inside out, thereby driving the second bracket to reciprocate relative to the first bracket.

[0005] Along the width direction of the first bracket, the first cable chain is horizontally arranged on one side inside the first bracket; the second bracket can be located inside the first bracket so that at least a portion of the second cable chain is located inside the first bracket, the second cable chain is horizontally arranged, and the second cable chain and the first cable chain are arranged along the width direction of the first bracket.

[0006] In one embodiment of this application, a first end of the first cable chain is connected to the first bracket, and a second end of the first cable chain is used to connect to the end of the second channel near the first channel; the axial direction of the first cable chain extends along the width direction of the first bracket, and along the height direction of the first bracket, the second end of the first cable chain is located above the first end of the first cable chain.

[0007] In one embodiment of this application, the first end of the second cable chain is connected to the second end of the first bracket, and the second end of the second cable chain is used to connect to the end of the third channel near the first channel; the axial direction of the second cable chain extends along the width direction of the second bracket, and the portion between the two ends of the second cable chain is bent and passes around the end of the second bracket near the first bracket, and along the height direction of the second bracket, the second end of the second cable chain is located above the first end of the second cable chain.

[0008] In one embodiment of this application, the second end of the first bracket is provided with a first pulley for sliding along the second bracket, and the second end of the first bracket is provided with a limiting wheel. The limiting wheel and the first pulley are respectively located on both sides of the height direction of the second bracket to restrict the movement of the first bracket in the height direction.

[0009] In one embodiment of this application, a limiting member is further included, the limiting member being used to restrict the movement of the first bracket in the width direction;

[0010] The limiting member is installed on both sides of the first pulley, or the limiting member is installed on the second bracket.

[0011] In one embodiment of this application, a second pulley is provided at the second end of the second bracket, and the second pulley is used to slide in connection with the third channel of the boarding bridge.

[0012] In one embodiment of this application, the height of the cable conveying device is 700-900 mm; and / or, the cable conveying device further includes a slide rail for mounting on the third channel, and the second bracket is slidably connected to the slide rail.

[0013] In one embodiment of this application, along the width direction of the first bracket, the inner bottom of the first bracket includes a first region, a second region, and a third region. The first region is used for cable routing and supporting the first cable chain, the second region is used for supporting the second cable chain, and the third region is used for cable routing. The sum of the width of the first region and the width of the third region is less than or equal to the width of the second region. And / or, the width of the first cable chain is 450-700 mm.

[0014] For the purposes described above, this application also provides a boarding bridge, including a first channel, a second channel, a third channel and the aforementioned cable conveying device, wherein the first channel, the second channel and the third channel are sequentially connected from the inside out;

[0015] The first end of the first bracket is connected to the first channel; the first end of the second bracket is connected to the second channel; and the second end of the second bracket is slidably connected to the third channel.

[0016] In one embodiment of this application, the movement distance of the third channel relative to the second channel is equal to the movement distance of the second channel relative to the first channel.

[0017] The main benefits of this application are:

[0018] The cable conveying device provided in this application has a first cable chain horizontally arranged on one side of the interior of the first bracket along its width direction. This arrangement provides space for a second bracket and a second cable chain, ensuring that the second and first cable chains can be arranged along the width direction of the first bracket, thereby reducing the height of the cable conveying device. In use, the first end of the first bracket is connected to the first channel of the boarding bridge, and the first end of the second bracket is connected to the second channel of the boarding bridge. When the boarding bridge switches from an extended state to a fully retracted state, the first, second, and third channels slide relative to each other. The first channel is located within the second channel, and both the first and second channels are located within the third channel. Simultaneously, this moves the second bracket into the interior of the first bracket, allowing at least a portion of the second cable chain to also be located within the first bracket. This fully utilizes the internal space of the first bracket, reducing the overall height of the cable conveying device and saving transportation costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the cable conveying device provided in the embodiments of this application, with the first channel, second channel and third channel in a fully retracted state;

[0021] Figure 2 A schematic diagram of the cable conveying device provided in the embodiments of this application, wherein the first channel, the second channel, and the third channel are in a partially elongated state;

[0022] Figure 3 A schematic diagram of the cable conveying device provided in the embodiments of this application, with the first channel, second channel and third channel in a fully extended state;

[0023] Figure 4 for Figure 3A sectional view along line AA;

[0024] Figure 5 for Figure 3 A cross-sectional view along line BB;

[0025] Figure 6 for Figure 3 A cross-sectional view along the CC line;

[0026] Figure 7 for Figure 3 A magnified view of a section at point I;

[0027] Figure 8 for Figure 3 Enlarged view of a section at point II;

[0028] Figure 9 for Figure 3 A magnified view of a section at point III.

[0029] The annotations in the attached figures are explained as follows:

[0030] 11-First bracket; 111-First pulley; 1111-Limit plate; 112-Limit wheel; 12-Second bracket; 121-Square tube; 122-Second pulley; 13-First cable chain; 13a-First end; 13b-Second end; 14-Second cable chain; 15-Slide rail; 21-First channel; 211-First base plate; 22-Second channel; 221-Second base plate; 23-Third channel; 231-Third base plate; 24-Connecting port; 25-Power distribution cabinet; 31-First cable; 32-Second cable. Detailed Implementation

[0031] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, 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. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] The orientation definition in this embodiment is as follows, see below. Figure 1 As shown, Figure 1 In the diagram, the arrow X indicates the length direction of the first bracket 11, the arrow Y indicates the width direction of the first bracket 11, and the arrow Z indicates the height direction of the first bracket 11.

[0035] It should be understood that the length direction of the second bracket 12 and the length direction of each passage of the boarding bridge are consistent with the length direction of the first bracket 11, the width direction of the second bracket 12 and the width direction of each passage of the boarding bridge are consistent with the width direction of the first bracket 11, and the height direction of the second bracket 12 and the height direction of each passage of the boarding bridge are consistent with the height direction of the first bracket 11.

[0036] See Figures 1 to 9 As shown, this embodiment provides a cable conveying device, including a first bracket 11, a second bracket 12, a first cable chain 13, and a second cable chain 14. The first end of the first bracket 11 is connected to the first channel 21 of the boarding bridge, and the second end of the first bracket 11 is slidably connected to the second bracket 12. The first end of the second bracket 12 is connected to the second channel 22 of the boarding bridge, and the second end of the second bracket 12 is slidably connected to the third channel 23 of the boarding bridge. The first channel 21, the second channel 22, and the third channel 23 of the boarding bridge are sequentially connected from the inside to the outside to drive the second bracket 12 to reciprocate relative to the first bracket 11. Along the width direction of the first bracket 11, the first cable chain 13 is horizontally arranged on one side inside the first bracket 11. The second bracket 12 can be located inside the first bracket 11 so that at least a portion of the second cable chain 14 is located inside the first bracket 11. The second cable chain 14 is horizontally arranged, and the second cable chain 14 and the first cable chain 13 are arranged along the width direction of the first bracket 11.

[0037] The cable conveying device provided in this embodiment is described in [reference]. Figure 5As shown, along the width direction of the first bracket 11, the first cable chain 13 is horizontally arranged on one side inside the first bracket 11, providing space for the second bracket 12 and the second cable chain 14. This ensures that the second cable chain 14 and the first cable chain 13 can be arranged along the width direction of the first bracket 11, thereby reducing the height of the cable conveying device. In use, the first end of the first bracket 11 is connected to the first channel 21 of the boarding bridge, and the first end of the second bracket 12 is connected to the second channel 22 of the boarding bridge. When the boarding bridge switches from the extended state to the fully retracted state, the first channel 21, the second channel 22, and the third channel 23 slide relative to each other. The first channel 21 is located inside the second channel 22, and both the first channel 21 and the second channel 22 are located inside the third channel 23. At the same time, the second bracket 12 is moved into the interior of the first bracket 11, so that at least a part of the second cable chain 14 can also be located inside the first bracket 11. This fully utilizes the internal space of the first bracket 11, reduces the overall height of the cable conveying device, and saves transportation costs.

[0038] In this embodiment, the cable can be transported via the first cable chain 13 and the second cable chain 14. Taking the first cable chain 13 as an example, the first cable chain 13 includes multiple link units, and adjacent link units are rotatably connected by a connecting shaft. The axis of the connecting shaft is generally perpendicular to the direction of movement of the first cable chain 13. Since the first cable chain 13 is arranged horizontally, it can maintain flexible movement when bending, while ensuring that the cable inside the first cable chain 13 is not subjected to excessive tension.

[0039] See Figure 1 As shown, the first end 13a of the first cable chain 13 is connected to the first bracket 11, and the second end 13b of the first cable chain 13 is used to connect to the end of the second channel 22 near the first channel 21; the axial direction of the first cable chain 13 extends along the width direction of the first bracket 11, and along the height direction of the first bracket 11, the second end 13b of the first cable chain 13 is located above the first end 13a of the first cable chain 13.

[0040] Specifically, the first end of the first cable chain 13 is partially connected to both ends of the first bracket 11. For example, the first end 13a of the first cable chain 13 is connected to the middle area of ​​the first bracket 11, and the second end 13b of the first cable chain 13 is used to connect to the end of the bottom plate of the second channel 22 near the first channel 21. The bottom plate of the second channel 22 is named the second bottom plate 221.

[0041] The axial direction of the first drag chain 13 is consistent with the axial direction of the connecting shaft. Therefore, the axial direction of the connecting shaft extends along the width direction of the first bracket 11. As the second channel 22 moves relative to the first channel 21, the first drag chain 13 bends and moves with the second channel 22, so that a part of the first drag chain 13 is above the other part. When the boarding bridge is in its fully extended state, the first drag chain 13 can bend naturally under its own weight. Compared with the case where the axial direction of the connecting shaft is consistent with the height direction of the first bracket 11, the first drag chain 13 is arranged horizontally in this embodiment, which not only saves space in the width direction of the first bracket 11, but also ensures the flexibility of movement of the first drag chain 13 and reduces the risk of jamming and pulling of cables.

[0042] In one embodiment, the first end of the second cable chain 14 is connected to the second end of the first bracket 11, and the second end of the second cable chain 14 is used to connect to the end of the third channel 23 near the first channel 21; the axial direction of the second cable chain 14 extends along the width direction of the second bracket 12, and the portion between the two ends of the second cable chain 14 is bent and passes around the end of the second bracket 12 near the first bracket 11, and along the height direction of the second bracket 12, the second end of the second cable chain 14 is located above the first end of the second cable chain 14.

[0043] See Figure 1 As shown, when the first channel 21, the second channel 22, and the third channel 23 are in their fully retracted state, most of the second cable chain 14 is located at the bottom of the first bracket 11, that is, most of the second cable chain 14 is located between the bottom plate of the first bracket 11 and the bottom plate of the second bracket 12. The remaining part of the second cable chain 14 passes around the end of the second bracket 12 closest to the first bracket 11 and is located on the second bracket 12; see also Figure 3 , Figure 6 , Figure 8 and Figure 9 As shown, when the first channel 21, the second channel 22 and the third channel 23 are in a fully extended state, the second cable chain 14 falls mostly on the bottom plate of the second bracket 12 under its own weight. At this time, the second cable chain 14 is mainly supported by the second bracket 12.

[0044] In one embodiment, see Figure 4 As shown, the second end of the first bracket 11 is provided with a first pulley 111 for sliding along the second bracket 12, and the second end of the first bracket 11 is provided with a limiting wheel 112. The limiting wheel 112 and the first pulley 111 are respectively located on both sides of the height direction of the second bracket 12 to restrict the movement of the first bracket 11 in the height direction.

[0045] The second bracket 12 has square tubes 121 on both sides in the width direction, and the first pulleys 111 can slide along the square tubes 121. For example, the first bracket 11 has first pulleys 111 on both sides in the width direction, and the first pulleys 111 correspond one-to-one with the square tubes 121 to enhance the stability of the sliding process.

[0046] By setting a limiting wheel 112, the limiting wheel 112 and the first pulley 111 are respectively located on both sides of the height direction of the second bracket 12. For example, the limiting wheel 112 can slide along the lower surface of the square tube 121 of the second bracket 12. The cooperation between the limiting wheel 112 and the first pulley 111 can restrict the movement of the first bracket 11 in the height direction.

[0047] In one embodiment, the cable conveying device further includes a limiting member for restricting the movement of the first bracket 11 in the width direction.

[0048] In some embodiments, the limiting members may be installed on both sides of the first pulley 111. For example, see... Figure 4 As shown, the limiting component may include two limiting plates 1111, which are respectively installed at both ends of the first pulley 111 in the axial direction.

[0049] In other embodiments, the limiting member may also be installed on the second bracket 12. For example, the limiting member may include two plates, both of which are connected to the square tube 121, for example, by welding, and the first pulley 111 can be positioned between the two plates. Alternatively, the limiting member may be a limiting groove provided on the upper surface of the square tube 121, in which the first pulley 111 slides.

[0050] In one embodiment, a second pulley 122 is provided at the second end of the second bracket 12, and the second pulley 122 is used to slide with the third channel 23 of the boarding bridge.

[0051] For example, see Figure 9 As shown, two second pulleys 122 are provided on both sides of the second bracket 12 in the width direction. The second pulleys 122 can be directly slidably connected to the third passage 23 of the boarding bridge.

[0052] In one embodiment, see Figure 2 As shown, the cable conveying device also includes a slide rail 15, which is used to install on the third channel 23. Exemplarily, the slide rail 15 is installed on the base plate (named the third base plate 231) of the third channel 23, and the length direction of the slide rail 15 is consistent with the length direction of the third channel 23. The second bracket 12 is slidably connected to the slide rail 15. Exemplarily, the second pulley 122 can slide along the length direction of the slide rail 15, realizing a sliding connection between the second end of the second bracket 12 and the third channel 23.

[0053] In one embodiment, the height of the cable conveying device is 700–900 mm.

[0054] Compared with traditional cable conveying devices, the overall height of the cable conveying device provided in this embodiment is reduced by 200-400mm.

[0055] It should be understood that, regardless of whether the cable conveying device is equipped with slide rail 15, the height of the cable conveying device can be between 700 and 900 mm.

[0056] This embodiment also provides a boarding bridge, including a first channel 21, a second channel 22, a third channel 23, and a cable conveying device provided in this embodiment. The first channel 21, the second channel 22, and the third channel 23 are sequentially connected from the inside to the outside. The first end of the first bracket 11 is connected to the first channel 21. The first end of the second bracket 12 is connected to the second channel 22. The second end of the second bracket 12 is slidably connected to the third channel 23.

[0057] The boarding bridge provided in this embodiment uses the cable conveying device provided in this embodiment. When the boarding bridge switches from the extended state to the fully retracted state, the first channel 21, the second channel 22, and the third channel 23 slide relative to each other. The first channel 21 is located inside the second channel 22, and both the first channel 21 and the second channel 22 are located inside the third channel 23. At the same time, it drives the second bracket 12 to move into the interior of the first bracket 11, so that at least a part of the second cable chain 14 can also be located inside the first bracket 11. This makes full use of the internal space of the first bracket 11, reduces the overall height of the cable conveying device, and saves transportation costs.

[0058] In some embodiments, the boarding bridge further includes a turntable and a arrival gate 24. The first passage 21 is connected to the terminal building via the turntable, and the third passage 23 is connected to the arrival gate 24. Taking the first passage 21 as an example, the end of the first passage 21 closer to the turntable is the rear end, and the end closer to the arrival gate 24 is the front end.

[0059] In some embodiments, see Figure 7 As shown, the first end of the first bracket 11 is hinged to the base plate of the first channel 21 (named the first base plate 211), and the first end of the second bracket 12 is hinged to the base plate of the second channel 22. The hinged connection provides a buffering effect, facilitates the adaptive adjustment of the positions of the first bracket 11 and the second bracket 12, and ensures that the boarding bridge can drive the first bracket 11 and the second bracket 12 to move normally in extension and retraction.

[0060] In one embodiment, the boarding bridge further includes a first cable 31 and a second cable 32, a first cable chain 13 for conveying the first cable 31 to a second channel 22, and a second cable chain 14 for conveying the second cable 32 to a third channel 23.

[0061] In this embodiment, the first cable 31 mainly supplies power to the lighting circuit of the second channel 22, and the second cable 32 mainly includes lighting cables, communication cables and control cables connected to the power distribution cabinet 25 in the third channel 23.

[0062] The first cable 31 is directly transported from the turntable side to the second channel 22 via the first cable chain 13; at the same time, the second cable 32 is transported to the third channel 23 via the second cable chain 14, and then the second cable 32 is transported to the power distribution cabinet 25 at the end of the third channel 23 near the receiving port 24 via the cable tray at the bottom of the third channel 23. This reduces the overall transport height of the boarding bridge, which is especially beneficial for overseas transport by reducing the overall transport volume of the boarding bridge channel and cable transport device, thus reducing transport costs.

[0063] For example, the first cable 31 runs from the turntable side through the bottom of the first bracket 11, enters the first cable chain 13 from its first end, exits from its second end, and then enters the interior of the second channel 22. Since the second channel 22 requires fewer cables, the overall width of the first cable chain 13 can be designed to be smaller while still meeting the routing requirements of the first cable 31. For example, the width of the first cable chain 13 can be designed within the range of 450–700 mm.

[0064] The second cable 32 runs from the turntable side through the bottom of the first bracket 11, enters the second cable carrier 14 from the first end, exits from the second end of the second cable carrier 14, and then enters the cable tray at the bottom of the third channel 23. Through the cable tray, the second cable 32 enters the distribution cabinet 25 at the front end of the third channel 23. This not only optimizes cable management and reduces the space occupied by cables, but also reduces the overall height of the device.

[0065] In one embodiment, along the width direction of the first bracket 11, the inner bottom of the first bracket 11 includes a first region, a second region, and a third region. The first region is used for routing the first cable 31 and the second cable 32 and for supporting the first cable carrier 13. The second region is used for supporting the second cable carrier 14. The third region is used for routing the second cable 32. The sum of the widths of the first region and the third region is less than or equal to the width of the second region. This optimizes the use of space in the height direction and the inner bottom space of the first bracket 11 during cable routing, thereby further effectively reducing the overall height of the device.

[0066] In one embodiment, the movement distance of the third channel 23 relative to the second channel 22 is equal to the movement distance of the second channel 22 relative to the first channel 21.

[0067] In this embodiment, the first channel 21 is a fixed channel, while the second channel 22 and the third channel 23 are both movable channels. When the movable channels move, the second channel 22 and the third channel 23 simultaneously extend and retract. The distance the second channel 22 moves relative to the first channel 21 is equal to the distance the third channel 23 moves relative to the second channel 22; that is, the second channel 22 and the third channel 23 move synchronously. The first cable chain 13 is driven by the second channel 22 and slides within the first bracket 11; the second cable chain 14 is driven by the third channel 23 and slides within the first bracket 11. The second bracket 12 supports the second cable chain 14 and also provides sliding support for the first bracket. In other words, when the boarding bridge extends and retracts, the first end of the first bracket 11 slides relative to the second bracket 12; the first end of the second bracket 12 slides relative to the slide rail 15 at the bottom of the third channel 23.

[0068] In summary, the cable conveying device and boarding bridge provided in this embodiment have a more compact layout and optimized space utilization. They can not only reduce the overall height and transportation costs, but also keep the cable conveying path stable. The horizontal arrangement of the first drag chain 13 and the second drag chain 14 can reduce the risk of the cable being pulled or twisted during the conveying process, thereby reducing the risk of cable damage. At the same time, it can also effectively improve the efficiency and stability of cable conveying.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cable conveying device, characterized in that, The system includes a first bracket, a second bracket, a first cable chain, and a second cable chain. A first end of the first bracket is connected to a first channel of the boarding bridge, and a second end of the first bracket is slidably connected to the second bracket. A first end of the second bracket is connected to a second channel of the boarding bridge, and a second end of the second bracket is slidably connected to a third channel of the boarding bridge. The first, second, and third channels of the boarding bridge are sequentially connected from the inside out to drive the second bracket to reciprocate relative to the first bracket. Along the width direction of the first bracket, the first cable chain is horizontally arranged on one side inside the first bracket; the second bracket can be located inside the first bracket so that at least a portion of the second cable chain is located inside the first bracket, the second cable chain is horizontally arranged, and the second cable chain and the first cable chain are arranged along the width direction of the first bracket.

2. The cable conveying device according to claim 1, characterized in that, The first end of the first cable chain is connected to the first bracket, and the second end of the first cable chain is used to connect to the end of the second channel near the first channel; the axial direction of the first cable chain extends along the width direction of the first bracket, and along the height direction of the first bracket, the second end of the first cable chain is located above the first end of the first cable chain.

3. The cable conveying device according to claim 1, characterized in that, The first end of the second cable chain is connected to the second end of the first bracket, and the second end of the second cable chain is used to connect to the end of the third channel near the first channel; the axial direction of the second cable chain extends along the width direction of the second bracket, and the portion between the two ends of the second cable chain is bent and passes around the end of the second bracket near the first bracket. Along the height direction of the second bracket, the second end of the second cable chain is located above the first end of the second cable chain.

4. The cable conveying device according to claim 1, characterized in that, The second end of the first bracket is provided with a first pulley for sliding along the second bracket, and the second end of the first bracket is provided with a limiting wheel. The limiting wheel and the first pulley are respectively located on both sides of the height direction of the second bracket to restrict the movement of the first bracket in the height direction.

5. The cable conveying device according to claim 4, characterized in that, It also includes a limiting member, which is used to restrict the movement of the first bracket in the width direction; The limiting member is installed on both sides of the first pulley, or the limiting member is installed on the second bracket.

6. The cable conveying device according to claim 1, characterized in that, The second end of the second bracket is provided with a second pulley, which is used to slide with the third channel of the boarding bridge.

7. The cable conveying device according to any one of claims 1 to 6, characterized in that, The height of the cable conveying device is 700-900 mm; and / or, the cable conveying device further includes a slide rail for installation in the third channel, and the second bracket is slidably connected to the slide rail.

8. The cable conveying device according to any one of claims 1 to 6, characterized in that, Along the width direction of the first bracket, the inner bottom of the first bracket includes a first region, a second region, and a third region. The first region is used for cable routing and supporting the first cable chain, the second region is used for supporting the second cable chain, and the third region is used for cable routing. The sum of the width of the first region and the width of the third region is less than or equal to the width of the second region. And / or, the width of the first cable chain is 450 to 700 mm.

9. A boarding bridge, characterized in that, The device includes a first channel, a second channel, a third channel, and a cable conveying device according to any one of claims 1 to 8, wherein the first channel, the second channel, and the third channel are sequentially connected from the inside out; The first end of the first bracket is connected to the first channel; the first end of the second bracket is connected to the second channel; and the second end of the second bracket is slidably connected to the third channel.

10. The boarding bridge according to claim 9, characterized in that, The distance the third channel moves relative to the second channel is equal to the distance the second channel moves relative to the first channel.

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