Passenger boarding bridge cable conveying device

Abstract

The utility model discloses a passenger boarding bridge cable conveying device which comprises a first drag chain frame, a second drag chain frame, a first drag chain and a second drag chain, one end of the first drag chain frame is hinged to the tail end of an inner channel, the other end of the first drag chain frame is in lap joint sliding fit with the second drag chain frame or in lap joint sliding fit with the bottom of a middle channel, and one end of the second drag chain frame is hinged to the tail end of the middle channel. One end of the first drag chain is connected with the first drag chain frame, the other end of the first drag chain is connected with the second drag chain frame or the middle channel, one end of the second drag chain is connected with the second drag chain frame, and the other end of the second drag chain is connected with the outer channel. The width of the first drag chain is consistent with the width of the second drag chain, the width direction of the first drag chain is obliquely arranged relative to the horizontal plane, a first drag chain supporting plate is arranged on the first drag chain frame, and the oblique low end of the first drag chain is supported by the first drag chain supporting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of boarding bridges, in particular to a cable conveying device for passenger boarding bridges. Background Art

[0002] During the use of the boarding bridge, the communication lines between the movable channel and the fixed channel are supported by cable brackets. An existing cable bracket structure is as shown in patent number CN2006100620565, a boarding bridge cable conveying device, including two sets of drag chain devices, the first drag chain device includes a first drag chain frame and a first drag chain, one end of the first drag chain frame is hinged to the tail end of the first channel of the boarding bridge, and the two ends of the first drag chain are respectively connected to the first drag chain frame and the second channel; the second drag chain device includes a second drag chain frame and a second drag chain, one end of the second drag chain frame is hinged to the tail end of the second channel and moves with the second channel, and the two ends of the second drag chain are respectively connected to the second drag chain frame and the third channel, the center line of the rotation hinge of the drag chain pieces of the first drag chain and the second drag chain is horizontally arranged, the other end of the first drag chain frame uses a steel pipe fixed on the second channel as a guide rail, and the second drag chain frame overlaps with the first drag chain frame when retracted.

[0003] The disadvantages of this structure are: the second drag chain frame needs to be able to be retracted into the inside of the first drag chain frame, so the width of the second drag chain frame is set to be smaller than the width of the first drag chain frame, and support plates need to be set on the left and right sides of the drag chain in the drag chain frame to support the drag chain (support surface 17 in Figure 9 of Patent No. CN2006100620565). If the width of the first drag chain is reduced, the width of the support plate used will be large, and the width of the support plate will affect the retraction of the second drag chain frame and the second drag chain. Therefore, the width of the first drag chain needs to be set to be larger than the width of the second drag chain, and the width of the support plate needs to be reduced. This structural design makes the two drag chains have different widths, and the two drag chains cannot be interchanged, which increases installation and maintenance costs. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art and to provide a cable conveying device for a passenger boarding bridge which has a simple structure, low cost and two interchangeable drag chains.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A passenger boarding bridge cable conveying device, comprising a first drag chain frame, a second drag chain frame, a first drag chain, and a second drag chain, characterized in that: one end of the first drag chain frame is hinged to the rear end of the inner channel, and the other end thereof is overlapped and slidably engaged with the second drag chain frame or overlapped and slidably engaged with the bottom of the middle channel; one end of the second drag chain frame is hinged to the rear end of the middle channel, and the other end thereof is overlapped and slidably engaged with the bottom of the outer channel;

[0007] The second drag chain frame can be retracted into the interior of the first drag chain frame or extended from the interior of the first drag chain frame;

[0008] One end of the drag chain 1 is connected to the drag chain frame 1, and the other end is connected to the drag chain frame 2 or the middle channel; one end of the drag chain 2 is connected to the drag chain frame 2, and the other end is connected to the outer channel;

[0009] The width of the drag chain 1 is consistent with the width of the drag chain 2;

[0010] The width direction of the drag chain 1 is arranged obliquely relative to the horizontal plane, the drag chain frame 1 is provided with a drag chain 1 support plate, and the inclined lower end of the drag chain 1 is supported by the drag chain 1 support plate; or the width direction of the drag chain 2 is arranged obliquely relative to the horizontal plane, the drag chain frame 2 is provided with a drag chain 2 support plate, and the inclined lower end of the drag chain 2 is supported by the drag chain 2 support plate;

[0011] Arranging the drag chain one at an angle makes the horizontal projection width of the drag chain one small, and the width of the drag chain frame one can be reduced accordingly without affecting the retraction of the drag chain frame two. The support plate of the drag chain one is arranged at the inclined lower end of the drag chain one, which can not only support the drag chain one, but also ensure that it will not affect the recovery of the drag chain two, thereby reducing the size of the drag chain frame one and allowing the drag chain one and the drag chain two to be set to the same width and used interchangeably, which is more flexible to use and reduces maintenance costs. Arranging the drag chain two at an angle can increase the actual width of the drag chain two, and allow the drag chain one and the drag chain two to be set to the same width and used interchangeably.

[0012] The support plate of the drag chain of the present invention is tilted and the tilt angle is consistent with the tilt angle of the drag chain, thereby further ensuring the supporting effect.

[0013] The drag chain support plate of the utility model adopts a wear-resistant plate or a wear-resistant plate is fixed on the drag chain support plate to reduce the wear of the drag chain and the support plate.

[0014] The drag chain support plate of the utility model comprises an upper drag chain support plate and a lower drag chain support plate, and the inclined lower end of the drag chain is supported by the upper drag chain support plate and the lower drag chain support plate.

[0015] The utility model discloses an upper support plate and / or a lower support plate of the drag chain, on which a raised limiting guide baffle is fixed; the setting of the limiting guide baffle can not only limit the lower end of the drag chain to prevent it from sliding down, but also play a guiding role in the movement of the drag chain.

[0016] The position limiting guide baffle of the utility model is made of wear-resistant material to increase the service life of the drag chain.

[0017] The utility model is also provided with a lower left support plate of the drag chain, which is arranged opposite to the lower support plate of the drag chain on the left and right. The inclination angle of the lower left support plate of the drag chain is consistent with the inclination angle of the drag chain 1, and the lower left support plate of the drag chain 1 supports the inclined top end of the drag chain 1 to ensure better support for the inclined drag chain 1.

[0018] The drag chain frame of the utility model comprises a front section of the drag chain frame and a rear section of the drag chain frame arranged along its length direction, and the tail end of the rear section of the drag chain frame is hinged to the tail end of the inner channel through the tail end connector of the inner channel;

[0019] The front section of the drag chain frame 1 is configured as a guide rail structure that is relatively arranged on the left and right sides, and the drag chain frame 2 is slidably matched with the guide rail to achieve overlapping and sliding cooperation between the drag chain frame 1 and the drag chain frame 2.

[0020] The guide rail of the utility model adopts a C-shaped guide rail with an opening facing inward, a roller is installed inside the C-shaped guide rail, and both ends of the drag chain frame two are inserted into the C-shaped guide rail and cooperate with the roller; this further ensures the sliding cooperation effect between the drag chain frame one and the drag chain frame two, and reduces friction.

[0021] The roller of the utility model is installed at the upper end of the C-shaped guide rail, and a rolling support is installed at the lower end of the C-shaped guide rail. The two ends of the drag chain frame are inserted into the C-shaped guide rail, and the upper end cooperates with the roller, and the lower end is supported by the rolling support.

[0022] The rolling support member includes a bolt, a sleeve and a nut. A through hole for the bolt to pass through is opened on the C-shaped guide rail. The sleeve is sleeved outside the bolt and rotates with the bolt. The tail end of the bolt extends out of the C-shaped guide rail through the through hole and is threadedly connected to the nut. The setting of the rolling support member can not only support the drag chain frame 2, but also reduce the wear of the drag chain frame 2 during movement.

[0023] The beneficial effects of the present invention are as follows: the drag chain one is arranged at an angle, so that the horizontal projection width of the drag chain one is small, and the width of the drag chain frame one can be reduced accordingly without affecting the retraction of the drag chain frame two. The support plate of the drag chain one is arranged at the inclined lower end of the drag chain one, which can not only support the drag chain one, but also ensure that it will not affect the recovery of the drag chain two, thereby reducing the size of the drag chain frame one and enabling the drag chain one and the drag chain two to be set to the same width and used interchangeably, which is more flexible to use and reduces maintenance costs; the drag chain two is arranged at an angle, which can increase the actual width of the drag chain two, so that the drag chain one and the drag chain two can be set to the same width and used interchangeably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the cable conveying device of the utility model in the unfolded state.

[0025] Figure 2This is a top view of the coordination between the drag chain frame 1 and the drag chain 1 of the utility model.

[0026] Figure 3 It is a side view of the cooperation between the drag chain frame 1 and the drag chain 1 of the utility model.

[0027] Figure 4 This is a schematic structural diagram of the front section of the drag chain rack of the utility model.

[0028] Figure 5 This is a schematic diagram of the coordination between the drag chain frame 2 and the drag chain 2 of the utility model.

[0029] Figure 6 This is a schematic diagram of the positions of the drag chain 1 and the drag chain 2 of the present invention.

[0030] Figure 7 It is a schematic diagram of the overall structure of the cable conveying device of the utility model in the recovery state.

[0031] Reference numerals: drag chain-1;

[0032] Drag chain two-2;

[0033] Drag chain frame 1-3, drag chain frame 1 front section 301, drag chain frame 1 rear section 302, inner channel tail end connector 303, roller 304, drag chain 1 upper support plate 305, drag chain 1 lower left support plate 3061, drag chain 1 lower support plate 3062, wear plate 307, bolt 3081, sleeve 3082, nut 3083, limit guide baffle 309;

[0034] Drag chain rack 2-4, drag chain rack 2 front section-401, drag chain rack 2 rear section-402, middle channel tail end connector-403, outer channel tail end connector-404;

[0035] Inner channel-5;

[0036] Middle channel-6;

[0037] Outer channel-7. DETAILED DESCRIPTION

[0038] The present invention will be described below with reference to the accompanying drawings and embodiments.

[0039] As shown in the accompanying drawings, a preferred embodiment is a cable conveying device for a passenger boarding bridge, comprising a drag chain frame 1 3, a drag chain frame 2 4, a drag chain 1 1, and a drag chain 2 2. One end of the drag chain frame 1 3 is hinged to the rear end of the inner channel 5, and the other end is overlapped and slidably engaged with the drag chain frame 2 4 or overlapped and slidably engaged with the bottom of the middle channel 6. One end of the drag chain frame 2 4 is hinged to the rear end of the middle channel 6, and the other end is overlapped and slidably engaged with the bottom of the outer channel 7.

[0040] The drag chain frame 2 4 can be retracted into the interior of the drag chain frame 1 3 or extended from the interior of the drag chain frame 1 3;

[0041] One end of the drag chain 1 is connected to the drag chain frame 1 3, and the other end is connected to the drag chain frame 2 4 or the middle channel 6. One end of the drag chain 2 is connected to the drag chain frame 2 4, and the other end is connected to the outer channel 7;

[0042] The width of the drag chain 1 is consistent with the width of the drag chain 2. The width direction of the drag chain 1 is inclined relative to the horizontal plane. The drag chain frame 3 is provided with a drag chain support plate. The inclined lower end of the drag chain 1 is supported by the drag chain support plate. The drag chain support plate is inclined along the inclination direction of the drag chain 1.

[0043] The drag chain 1 is arranged at an angle so that the horizontal projection width of the drag chain 1 is small. The width of the drag chain frame 3 can be reduced accordingly without affecting the retraction of the drag chain frame 2 4. The drag chain 1 support plate is arranged at the inclined lower end of the drag chain 1, which can not only support the drag chain 1 but also ensure that it will not affect the recovery of the drag chain 2 2. This not only reduces the size of the drag chain frame 3, but also enables the drag chain 1 and the drag chain 2 2 to be set to the same width and used interchangeably, which is more flexible to use and reduces maintenance costs.

[0044] The inclination angle of the drag chain support plate is consistent with the inclination angle of the drag chain, further ensuring the supporting effect.

[0045] The drag chain 1 support plate adopts a wear-resistant plate or a wear-resistant plate is fixed on the drag chain 1 support plate to reduce the wear of the drag chain 1 and the drag chain 1 support plate.

[0046] The drag chain 1 support plate includes an upper support plate 305 of the drag chain 1 and a lower support plate 3062 of the drag chain 1; the upper support plate 305 of the drag chain 1 and the lower support plate 3062 of the drag chain 1 support the inclined lower end of the drag chain 1.

[0047] A raised limiting guide baffle 309 is fixed on the upper support plate 305 of the drag chain 1 and / or the lower support plate 3062 of the drag chain; the setting of the limiting guide baffle 309 can not only limit the lower end of the drag chain 1 to prevent it from sliding down, but also guide the movement of the drag chain 1.

[0048] In this embodiment, a limiting guide baffle 309 is provided on the lower support plate 3062 of the drag chain. The limiting guide baffle is made of a wear-resistant material. In this embodiment, the limiting guide baffle 309 is made of nylon.

[0049] In this embodiment, the drag chain one support plate also includes a drag chain one lower left support plate 3061, and the drag chain one lower left support plate 3061 is arranged opposite to the drag chain one lower support plate 3062 on the left and right. The drag chain one upper support plate 305, the drag chain one lower left support plate 3061, and the drag chain one lower support plate 3062 are inclined along the inclination direction of the drag chain 1 and are consistent with the inclination angle of the drag chain 1, so as to ensure better support for the inclined drag chain 1.

[0050] In this embodiment, wear-resistant plates 307 are fixed to the upper support plate 305 of the drag chain 1, the lower left support plate 3061 of the drag chain 1, and the lower support plate 3062 of the drag chain to reduce wear on the inclined drag chain 1 and the support plate of the drag chain 1.

[0051] In this embodiment, the drag chain frame 1, the drag chain 2, and the drag chain frame 3 4 are arranged horizontally.

[0052] The drag chain frame 1 3 includes a front section 301 and a rear section 302 of the drag chain frame 1 arranged along its length direction. The tail end of the front section 301 of the drag chain frame 1 is connected to the head end of the rear section 302 of the drag chain frame 1, and the tail end of the rear section 302 of the drag chain frame 1 is hinged to the tail end of the inner channel through the inner channel tail end connector 303.

[0053] The front section 301 of the drag chain frame 1 is configured as a guide rail structure that is relatively arranged on the left and right sides, and the drag chain frame 2 slidably cooperates with the guide rail to achieve overlapping and sliding cooperation between the drag chain frame 1 and the drag chain frame 2.

[0054] The drag chain frame 2 4 includes a front section 401 of the drag chain frame 2 and a rear section 402 of the drag chain frame 2 arranged along its length direction. The tail end of the front section 401 of the drag chain frame 2 is connected to the head end of the rear section 402 of the drag chain frame 2, and the tail end of the rear section 402 of the drag chain frame 2 is hinged to the tail end of the middle channel 6 through the tail end connector 403 of the middle channel 6.

[0055] The guide rail adopts a C-shaped guide rail with the opening facing inward, and a roller 304 is installed inside the C-shaped guide rail. The two ends of the drag chain frame 2 4 are inserted into the C-shaped guide rail and cooperate with the roller 304; this further ensures the sliding cooperation effect of the drag chain frame 1 3 and the drag chain frame 2 4 and reduces friction.

[0056] The roller 304 is mounted on the upper end of the C-shaped guide rail. In this embodiment, the roller 304 is inserted on the roller and rotates with the roller. The roller is fixedly connected to the C-shaped guide rail. A rolling support is installed at the lower end of the C-shaped guide rail. The two ends of the drag chain frame 24 are inserted into the C-shaped guide rail and the upper end cooperates with the roller 304, and the lower end is supported by the rolling support.

[0057] The rolling support member includes a bolt 3081, a sleeve 3082 and a nut 3083. A through hole is provided on the C-shaped guide rail for the bolt to pass through. The sleeve 3082 is sleeved on the outside of the bolt 3081 and rotates with the bolt 3081. The tail end of the bolt 3081 extends out of the C-shaped guide rail through the through hole and is threadedly connected to the nut 3083. The setting of the rolling support member can not only support the drag chain frame 2 4, but also reduce the wear of the drag chain frame 2 4 during movement.

[0058] In this embodiment, the left and right ends of the second drag chain frame 4 are configured as slider structures that can slidably cooperate with the guide rails, so that the second drag chain frame 4 can move along the length direction of the first drag chain frame.

[0059] In this embodiment, the inner channel tail end connector 303 includes a connecting ear plate and an inner channel fixing plate. The connecting ear plates are fixed on the left and right sides of the tail end of the drag chain frame 1 3 respectively. The connecting ear plates are hinged to the inner channel fixing plate, and the inner channel fixing plate is fixed to the bottom of the inner channel tail end.

[0060] The middle channel tail end connector 403 includes a connecting ear plate and a middle channel fixing plate. The left and right sides of the tail end of the drag chain frame 2 4 are respectively fixed with connecting ear plates. The connecting ear plates are hinged to the middle channel fixing plate. The middle channel fixing plate is fixed to the bottom of the middle channel tail end.

[0061] The outer channel tail end connector 404 includes a connecting ear plate and an outer channel fixing plate. The left and right sides of the first end of the drag chain frame 24 are respectively fixed with connecting ear plates. The connecting ear plates are hinged to the outer channel fixing plate, and the outer channel fixing plate is fixed to the bottom of the outer channel tail end.

[0062] In this embodiment, the drag chain's first left lower support plate 3061 and the drag chain's lower support plate 3062 are arranged in the drag chain frame's first rear section 302. The left end of the drag chain's first left lower support plate 3061 is fixed to the left end of the drag chain frame's first rear section 302, and the right end of the drag chain's lower support plate 3062 is fixed to the right end of the drag chain frame's first rear section 302. The drag chain's first left lower support plate 3061 and the drag chain's lower support plate 3062 have the same inclination angle.

[0063] The drag chain's upper support plate 305 is fixed to the drag chain frame's front section 301 . In this embodiment, the right end of the drag chain's upper support plate 305 is fixed to the right C-shaped guide rail.

[0064] In this embodiment, the tail end of the drag chain 1 is fixed to the head end of the rear section of the drag chain frame 1 3, basically located in the middle of the entire drag chain frame 1 3. When the outer channel 7 and the middle channel 6 are fully retracted, the drag chain 1 can be supported by the lower left support plate 3061 of the drag chain 1 and the lower support plate 3062 of the drag chain. The drag chain frame 2 4 is located above the drag chain 1. When the outer channel 7 and the middle channel 6 are fully unfolded, the drag chain 1 can be supported by the upper support plate 305 of the drag chain 1.

[0065] In this embodiment, the drag chain frame 2 4 is also provided with a drag chain 2 support plate, and the drag chain 2 support plate includes a drag chain 2 upper left support plate, a drag chain 2 lower left support plate, a drag chain 2 upper right support plate, and a drag chain 2 lower right support plate. The drag chain 2 upper left support plate and the drag chain 2 lower left support plate, the drag chain 2 upper right support plate and the drag chain 2 lower right support plate are respectively arranged opposite to each other up and down, and the drag chain 2 upper left support plate and the drag chain 2 upper right support plate, the drag chain 2 lower left support plate and the drag chain 2 lower right support plate are arranged opposite to each other left and right;

[0066] The second upper left support plate of the drag chain, the second lower left support plate of the drag chain, the second upper right support plate of the drag chain, and the second lower right support plate of the drag chain are arranged horizontally.

[0067] In this embodiment, the lower left support plate of the drag chain 2 and the lower right support plate of the drag chain 2 are arranged in the rear section 402 of the drag chain frame 2, the left end of the lower left support plate of the drag chain 2 is fixed to the left end of the rear section 402 of the drag chain frame 2, the right end of the lower right support plate of the drag chain 2 is fixed to the right end of the rear section 402 of the drag chain frame 2, and the lower left support plate of the drag chain 2 and the lower right support plate of the drag chain 2 are arranged horizontally;

[0068] The upper left support plate of the second drag chain and the upper right support plate of the second drag chain are fixed to the front section 401 of the second drag chain frame, the left end of the upper left support plate of the second drag chain is fixed to the left end of the front section 401 of the second drag chain frame, and the right end of the upper right support plate of the second drag chain is fixed to the left end of the front section 401 of the second drag chain frame, and the upper left support plate of the second drag chain and the upper right support plate of the second drag chain are arranged horizontally.

[0069] In this embodiment, the tail end of the drag chain 2 is fixed at the head end of the rear section 402 of the drag chain frame 2, which is basically located in the middle of the entire drag chain frame 2 4. When the outer channel 7 and the middle channel 6 are fully retracted, the drag chain 2 2 can be supported by the lower left support plate of the drag chain 2 and the lower right support plate of the drag chain 2. When the outer channel 7 and the middle channel 6 are fully unfolded, the drag chain 2 2 can be supported by the upper left support plate of the drag chain 2 and the upper right support plate of the drag chain 2.

[0070] like Figure 6 As shown, the coordination between the drag chain 1 and the drag chain 2 2 is shown. When the outer channel 7 and the middle channel 6 are recovered, due to the inclined setting of the drag chain 1, the upper support plate 305 of the drag chain 1 supports the inclined lower end of the drag chain 1, and the position of the upper support plate 305 of the drag chain 1 will not restrict the movement of the drag chain 2 2.

[0071] When using this utility model:

[0072] 1. When the outer channel 7 and the middle channel 6 are recovered, the drag chain frame 2 4 is recovered to the inside of the drag chain frame 1 3. The drag chain frame 2 4 is located above the drag chain 1. The status of the drag chain frame and the drag chain is as follows: Figure 7 As shown;

[0073] 2. When the outer channel 7 and the middle channel 6 are extended, the drag chain frame 2 4 is extended from the drag chain frame 1 3. The status of the drag chain frame and the drag chain is as follows: Figure 1 As shown;

[0074] 3. During installation and maintenance, drag chain 1 and drag chain 2 can be used interchangeably as needed.

Claims

1. A cable conveying device for a passenger boarding bridge, comprising a first drag chain frame, a second drag chain frame, a first drag chain, and a second drag chain, characterized in that: One end of the drag chain frame 1 is hinged to the tail end of the inner channel, and the other end is overlapped and slidably matched with the drag chain frame 2 or overlapped and slidably matched with the bottom of the middle channel. One end of the drag chain frame 2 is hinged to the tail end of the middle channel, and the other end is overlapped and slidably matched with the bottom of the outer channel; The second drag chain frame can be retracted into the interior of the first drag chain frame or extended from the interior of the first drag chain frame; One end of the drag chain 1 is connected to the drag chain frame 1, and the other end is connected to the drag chain frame 2 or the middle channel; one end of the drag chain 2 is connected to the drag chain frame 2, and the other end is connected to the outer channel; The width of the drag chain 1 is consistent with the width of the drag chain 2; The width direction of the drag chain 1 is arranged obliquely relative to the horizontal plane, the drag chain frame 1 is provided with a drag chain 1 support plate, and the inclined lower end of the drag chain 1 is supported by the drag chain 1 support plate; or the width direction of the drag chain 2 is arranged obliquely relative to the horizontal plane, the drag chain frame 2 is provided with a drag chain 2 support plate, and the inclined lower end of the drag chain 2 is supported by the drag chain 2 support plate.

2. A cable conveying device for a passenger boarding bridge according to claim 1, characterized in that: The first support plate of the drag chain is tilted and the tilt angle is consistent with the tilt angle of the drag chain.

3. A cable conveying device for a passenger boarding bridge according to claim 1 or 2, characterized in that: The drag chain support plate adopts a wear-resistant plate or a wear-resistant plate is fixed on the drag chain support plate.

4. A cable conveying device for a passenger boarding bridge according to claim 1 or 2, characterized in that: The drag chain 1 support plate includes a drag chain 1 upper support plate and a drag chain 1 lower support plate, and the inclined lower end of the drag chain 1 is supported by the drag chain 1 upper support plate and the drag chain 1 lower support plate.

5. A cable conveying device for a passenger boarding bridge according to claim 4, characterized in that: A raised limiting guide baffle is fixed on the upper support plate of the drag chain and / or the lower support plate of the drag chain.

6. A cable conveying device for a passenger boarding bridge according to claim 5, characterized in that: The limiting guide baffle is made of wear-resistant material.

7. A cable conveying device for a passenger boarding bridge according to claim 1, 2, 5 or 6, characterized in that: A lower left support plate of the drag chain is also provided. The lower left support plate of the drag chain is arranged opposite to a lower support plate of the drag chain on the left and right sides. The inclination angle of the lower left support plate of the drag chain is consistent with the inclination angle of the drag chain 1. The lower left support plate of the drag chain supports the inclined top end of the drag chain 1.

8. A cable conveying device for a passenger boarding bridge according to claim 1, 2, 5 or 6, characterized in that: The drag chain frame 1 includes a front section of the drag chain frame 1 and a rear section of the drag chain frame 1 arranged along its length direction, and the tail end of the rear section of the drag chain frame 1 is hinged to the tail end of the inner channel through the tail end connector of the inner channel; The front section of the first drag chain frame is configured as a guide rail structure that is relatively arranged on the left and right sides, and the second drag chain frame is slidably matched with the guide rail.

9. A cable conveying device for a passenger boarding bridge according to claim 8, characterized in that: The guide rail adopts a C-shaped guide rail with an opening facing inward, and rollers are installed inside the C-shaped guide rail. The two ends of the drag chain frame are inserted into the C-shaped guide rail and matched with the rollers.

10. A cable conveying device for a passenger boarding bridge according to claim 9, characterized in that: The roller is installed at the upper end of the C-shaped guide rail, and a rolling support is installed at the lower end of the C-shaped guide rail. The two ends of the drag chain frame are inserted into the C-shaped guide rail and the upper end cooperates with the roller, and the lower end is supported by the rolling support. The rolling support member includes a bolt, a sleeve and a nut. A through hole for the bolt to pass through is opened on the C-shaped guide rail. The sleeve is sleeved outside the bolt and rotates with the bolt. The tail end of the bolt extends out of the C-shaped guide rail through the through hole and is threadedly connected to the nut.

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