Boarding bridge

Abstract

The utility model relates to the technical field of airport equipment, in particular to a remote or unmanned boarding bridge. The boarding bridge comprises an airport pickup platform and a rotating platform, the airport pickup platform is provided with a first angle detection device, and the rotating platform is provided with a second angle detection device; the first angle detection device comprises two first detection elements which are arranged in a redundant mode, and the two first detection elements are coaxially arranged and used for measuring the rotation angle of the airport pickup platform. The second angle detection device comprises two second detection elements which are arranged in a redundancy manner; the two second detection elements are coaxially arranged and used for measuring the rotation angle of the rotating platform. Through the two first detection elements arranged in a redundancy mode and the two second detection elements arranged in a redundancy mode, it is guaranteed that the docking machine platform and the rotating platform are accurately and reliably controlled, and then the accuracy and reliability of operation of the boarding bridge are improved.

Description

Technical Field

[0001] The present application relates to the technical field of airport equipment, and particularly to a remotely or unmanned boarding bridge. Background Art

[0002] With the development of technology and the increasing demand for intelligence in airports, the market demand for remotely driven boarding bridges and unmanned boarding bridges is growing. At the same time, the requirements for the accuracy and reliability of remotely driven boarding bridges and unmanned boarding bridges are also getting higher and higher. A variety of detection components (such as encoders, distance sensors) or detection systems are used in remotely driven boarding bridges and unmanned boarding bridges to detect the condition of the boarding bridge in real time. The accuracy and reliability of these detection components or detection systems and the data they feedback also determine the accuracy and reliability of subsequent control of the boarding bridge. Utility Model Content

[0003] The purpose of the present application is to provide a boarding bridge to improve the accuracy and reliability of the operation of the boarding bridge.

[0004] Based on the above purpose, the present application provides a boarding bridge, including a pick-up platform and a rotating platform. The pick-up platform is provided with a first angle detection device, and the rotating platform is provided with a second angle detection device; the first angle detection device includes two redundantly arranged first detection elements, and the two first detection elements are coaxially arranged for measuring the rotation angle of the pick-up platform; the second angle detection device includes two redundantly arranged second detection elements; the two second detection elements are coaxially arranged for measuring the rotation angle of the rotating platform.

[0005] In an embodiment of the present application, the pick-up platform includes a first fixed part and a first rotating part, and the first rotating part can rotate relative to the first fixed part; the first fixed part includes a first bottom plate and a first top plate, and the first bottom plate is located below the first top plate;

[0006] The first angle detection device is installed on one side of the first bottom plate facing the first top plate;

[0007] Or, the first angle detection device is installed on one side of the first bottom plate away from the first top plate;

[0008] Or, the first angle detection device is installed on one side of the first top plate facing the first bottom plate;

[0009] Or, the first angle detection device is installed on one side of the first top plate away from the first bottom plate.

[0010] In one embodiment of the present application, the boarding bridge further includes a first mounting bracket, the first mounting bracket is provided with two first mounting positions, and the two first detection elements are respectively mounted on the two first mounting positions; the first angle detection device further includes a first connecting portion, one end of the first connecting portion is connected to the rotating shaft of the first detection element, and the other end of the first connecting portion is connected to the first rotating member.

[0011] In one embodiment of the present application, the rotating platform includes a second fixing member and a second rotating member, and the second rotating member is capable of rotating relative to the second fixing member; the second fixing member includes a second bottom plate and a second top plate, and the second bottom plate is located below the second top plate;

[0012] The second angle detection device is mounted on the side of the second bottom plate facing the second top plate, or, the second angle detection device is mounted above the second top plate to measure the rotation angle of the second rotating member.

[0013] In one embodiment of the present application, the boarding bridge further includes a second mounting bracket, the second mounting bracket is disposed on the second fixing member, the second mounting bracket is provided with two second mounting positions, and the two second detection elements are respectively mounted on the two second mounting positions; the second angle detection device further includes a second connecting portion, one end of the second connecting portion is connected to the rotating shaft of the second detection element, and the other end of the second connecting portion is connected to the second rotating member.

[0014] In one embodiment of the present application, the boarding bridge further includes a controller and an alarm, and the alarm, the first detection element and the second detection element are all connected to the controller; the controller is configured to control the alarm to alarm when the difference between the measurement results of the two first detection elements is greater than a first set value; and / or, the controller is configured to control the alarm to alarm when the difference between the measurement results of the two second detection elements is greater than a second set value.

[0015] In one embodiment of the present application, the boarding bridge further includes a voltage detection sensor, a breakage detection sensor and an electromagnetic interference sensor, and the voltage detection sensor, the breakage detection sensor and the electromagnetic interference sensor are all connected to the controller.

[0016] In one embodiment of the present application, the boarding bridge further includes a laser distance sensor, and the laser distance sensor is used to detect the distance between the boarding bridge and the aircraft door.

[0017] In one embodiment of the present application, the boarding bridge further comprises a heat preservation device, the heat preservation device comprises a heat preservation layer and a resistance wire, the heat preservation layer is arranged outside the laser ranging sensor, and the resistance wire is used to generate heat when powered on;

[0018] And / or, the first detection element, the second detection element and the laser ranging sensor are detection elements whose minimum operating temperature and minimum storage temperature are both no higher than -40°C.

[0019] In one embodiment of the present application, the heat preservation device further includes an uninterruptible power supply, and the uninterruptible power supply is connected to the resistance wire.

[0020] The beneficial effects of this application are mainly:

[0021] The boarding bridge provided in the present application measures the rotation angle of the docking platform by means of two redundantly arranged first detection elements. When the measured value of one of the first detection elements deviates, they can be checked against each other by means of the other first detection element. When one of the first detection elements fails, the other first detection element can still be used normally, thereby ensuring accurate and reliable control of the docking platform; at the same time, the rotation angle of the rotating platform is measured by means of two redundantly arranged second detection elements. When the measured value of one of the second detection elements deviates, they can be checked against each other by means of the other second detection element. When one of the second detection elements fails, the other second detection element can still be used normally, thereby ensuring accurate and reliable control of the rotating platform, thereby improving the accuracy and reliability of the operation of the boarding bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of a partial structure of a boarding bridge provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of the first structure of the passenger receiving platform in the boarding bridge provided in the embodiment of the present application (the first detection element is located above the first bottom plate);

[0025] Figure 3 It is a schematic diagram of the structure of the shift fork in the embodiment of the present application;

[0026] Figure 4The second structural schematic diagram of the receiving platform in the boarding bridge provided by the embodiment of the present application (the first detection element is located below the first top plate);

[0027] Figure 5 The structural schematic diagram of the rotating platform in the boarding bridge provided by the embodiment of the present application (the second detection element is located above the second bottom plate);

[0028] Figure 6 The cross-sectional schematic diagram of the heat preservation device in the boarding bridge provided by the embodiment of the present application.

[0029] The description of the reference numerals is as follows:

[0030] 11 - First detection element; 12 - First rotating member; 13 - First mounting bracket; 131 - Base; 132 - First mounting plate; 133 - Second mounting plate; 14 - First connecting portion; 141 - Linking column; 142 - Fork; 1421 - Clamping groove; 1422 - Guide groove; 15 - First bottom plate; 16 - First top plate; 17 - Link; 18 - Connecting shaft; 19 - Floor; 21 - Second detection element; 22 - Second rotating member; 23 - Second mounting bracket; 24 - Second connecting portion; 31 - Heat preservation layer; 32 - Resistance wire; 40 - Receiving port; 50 - Telescopic channel. Detailed implementation manners

[0031] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0032] In the description of the present application, it should be noted that terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, terms such as "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] See also Figures 1 to 6 As shown, this embodiment provides a boarding bridge, including a receiving platform and a rotating platform, the receiving platform is provided with a first angle detection device, and the rotating platform is provided with a second angle detection device; the first angle detection device includes two redundantly arranged first detection elements 11, the two first detection elements 11 are coaxially arranged, and are used to measure the rotation angle of the receiving platform; the second angle detection device includes two redundantly arranged second detection elements 21; the two second detection elements 21 are coaxially arranged, and are used to measure the rotation angle of the rotating platform.

[0035] The boarding bridge provided in this embodiment measures the rotation angle of the docking platform by means of two redundantly arranged first detection elements 11. When the measured value of one of the first detection elements 11 deviates, they can be mutually checked by means of the other first detection element 11. When one of the first detection elements 11 fails, the other first detection element 11 can still be used normally, thereby ensuring accurate and reliable control of the docking platform; at the same time, the rotation angle of the rotating platform is measured by means of two redundantly arranged second detection elements 21. When the measured value of one of the second detection elements 21 deviates, they can be mutually checked by means of the other second detection element 21. When one of the second detection elements 21 fails, the other second detection element 21 can still be used normally, thereby ensuring accurate and reliable control of the rotating platform, thereby improving the accuracy and reliability of the operation of the boarding bridge.

[0036] Exemplarily, both the first detection element 11 and the second detection element 21 may be encoders, for example, absolute value encoders.

[0037] In one embodiment, see Figure 1 As shown, the receiving platform includes a first fixed component and a first rotating component 12, and the first rotating component 12 can rotate relative to the first fixed component; the first fixed component includes a first bottom plate 15 and a first top plate 16, and the first bottom plate 15 is located below the first top plate 16. The receiving platform also includes two side walls, which are arranged opposite to each other and are connected between the first bottom plate 15 and the first top plate 16. The space enclosed by the first top plate 16, the first bottom plate 15 and the two side walls can be used as a walking passage of the receiving platform.

[0038] The boarding bridge further includes a telescopic passage 50 and a receiving port 40. The first fixed component of the receiving platform is connected to the telescopic passage 50, and the first rotating component 12 of the receiving platform is connected to the receiving port 40.

[0039] There are various installation positions for the first angle detection device. Four installation positions will be mainly described below.

[0040] See Figure 1 As shown, the first angle detection device can be installed on the side of the first bottom plate 15 facing the first top plate 16. In this way, the first angle detection device can be inspected and maintained inside the receiving platform without the need for high-altitude work from the outside. This is not only convenient for operation, but also the personal safety of the operator can be guaranteed.

[0041] A floor 19 is provided inside the receiving platform. The floor 19 is located on the first bottom plate 15 and can block the first angle detection device. The floor 19 is provided with a maintenance opening, which is convenient for installing and maintaining the first angle detection device through the maintenance opening. A cover plate can also be provided at the maintenance opening, and the cover plate is installed at the maintenance opening in a manner that can be opened and closed.

[0042] See Figure 2 As shown, the boarding bridge further includes a first mounting bracket 13. The first mounting bracket 13 is provided with two first mounting positions, and two first detection elements 11 are respectively installed at the two first mounting positions. That is to say, each first mounting position is installed with a first detection element 11.

[0043] Exemplarily, the first mounting bracket 13 includes a base 131, a first mounting plate 132 and a second mounting plate 133. The base 131 is connected to the first bottom plate 15. Exemplarily, the base 131 is connected to the first bottom plate 15 through a connecting shaft 18; both the first mounting plate 132 and the second mounting plate 133 are connected to the base 131. The first mounting plate 132 and the second mounting plate 133 are arranged in parallel at intervals. The first mounting plate 132 is located between the second mounting plate 133 and the bottom plate; a first mounting position is formed on the side of the first mounting plate 132 facing the second mounting plate 133, and another first mounting position is formed on the side of the second mounting plate 133 away from the first mounting plate 132.

[0044] The first angle detection device further includes a first connecting portion 14. One end of the first connecting portion 14 is connected to the rotating shaft of the first detection element 11, and the other end of the first connecting portion 14 is connected to the first rotating component 12.

[0045] Exemplarily, the rotating shaft of the first detection element 11 is coaxially arranged with the rotation axis of the first rotating component 12. The rotating shaft of the first detection element 11 can rotate synchronously, with the same frequency and coaxially with the first rotating component 12 to accurately measure the rotation angle of the first rotating component 12.

[0046] On the premise of ensuring the installation accuracy, the axis of the connecting shaft 18 in this embodiment is the rotation axis of the rotating component.

[0047] The first connecting portion 14 includes a linkage column 141 and a fork 142. The linkage column 141 is connected to the rotating component, one end of the fork 142 is connected to the rotating shaft of the first detection element 11, and the other end of the fork 142 is connected to the linkage column 141.

[0048] In some embodiments, as shown in Figure 2 one linkage column 141 and two forks 142 are provided. One end of one fork 142 is connected to the rotating shaft of one of the first detection elements 11, one end of the other fork 142 is connected to the rotating shaft of the other first detection element 11, and the other ends of the two forks 142 are both connected to the linkage column 141.

[0049] In other embodiments, both the linkage column 141 and the fork 142 are provided in two. The two linkage columns 141 are arranged in parallel and offset. One fork 142 is used to connect one first detection element 11 and one linkage column 141, and the other fork 142 is used to connect the other first detection element 11 and the other linkage column 141.

[0050] As shown in Figure 1 and Figure 2 the receiving platform further includes a connecting rod 17. One end of the connecting rod 17 is connected to the first rotating component 12, and the other end of the connecting rod 17 is used to connect to the receiving port 40. Exemplarily, two connecting rods 17 are respectively provided at the top and bottom of the receiving platform. The two connecting rods 17 are arranged at an angle, and the axes of the two connecting rods 17 both intersect with the axis of the connecting shaft 18.

[0051] One end of the fork 142 is provided with a clamping groove 1421, and the rotating shaft of the first detection element 11 is installed inside the clamping groove 1421. The extending direction of the clamping groove 1421 is consistent with the length direction of the fork 142. The notch of the clamping groove 1421 is located at the end face of one end of the fork 142. The clamping groove 1421 has two opposite groove walls. Both groove walls are provided with arc-shaped recesses. The radial distance between the inner surfaces of the two arc-shaped recesses is adapted to the diameter of the rotating shaft of the first detection element 11. Both groove walls are provided with threaded holes, and the two groove walls can be locked by bolts to ensure that the rotating shaft of the first detection element 11 can rotate together with the fork 142.

[0052] The other end of the fork 142 is provided with a guide groove 1422, and the linkage column 141 is limited in the guide groove 1422. As shown in Figure 3As shown, the opening direction of the guide groove 1422 is opposite to the opening direction of the clamping groove 1421, and the guide groove 1422 is continuous along the thickness direction of the shift fork 142. The cross-section of the linkage column 141 can be circular or rectangular, and the dimension of the linkage column 141 along the width direction of the guide groove 1422 is adapted to the distance between the two groove walls of the guide groove 1422.

[0053] See also Figure 4 As shown, the first angle detection device is installed on the side of the first top plate 16 facing the first bottom plate 15. In this way, the first angle detection device can be inspected and maintained in the receiving platform without the need for external climbing operations, which is not only convenient to operate, but also can ensure the personal safety of the operator.

[0054] In other embodiments, the first angle detection device can also be installed on a side of the first bottom plate 15 away from the first top plate 16, and when the first angle detection device is inspected and maintained, there is no need to perform a high-altitude operation from the outside. Of course, the first angle detection device can also be installed on a side of the first top plate 16 away from the first bottom plate 15.

[0055] In some embodiments, the rotating platform includes a second fixed component and a second rotating component 22, and the second rotating component 22 can rotate relative to the second fixed component; the second fixed component includes a second bottom plate and a second top plate, and the second bottom plate is located below the second top plate.

[0056] The second fixed component and the second rotating component 22 of the rotating platform can be used to connect with the fixed channel (or terminal building) and the telescopic channel 50 respectively.

[0057] It should be noted that the structure of the rotating platform and its connection relationship with other structures in the boarding bridge should be understandable to those skilled in the art, and are well known and easy to implement for those skilled in the art, so this embodiment will not be described in detail.

[0058] In some embodiments, the second angle detection device can be installed on the side of the second bottom plate facing the second top plate to measure the rotation angle of the second rotating component 22. In this way, the second detection element 21 can be installed and maintained inside the rotating platform without the need for high-altitude operations, thereby improving work efficiency and safety.

[0059] It should be noted that a floor is also provided in the rotating platform, the floor is located on the second bottom plate, and can shield the second angle detection device, and the floor is provided with an inspection port, which is convenient for installing and maintaining the second angle detection device from the inspection port. A cover plate can also be provided at the inspection port, and the cover plate is installed on the inspection port in an openable and closable manner.

[0060] In other embodiments, the second angle detection device may also be installed above the second top plate to measure the rotation angle of the second rotating member 22.

[0061] In one embodiment, referring to Figure 5 As shown, the boarding bridge further includes a second mounting bracket 23. The second mounting bracket 23 is arranged on the second fixing member. The second mounting bracket 23 is provided with two second mounting positions, and two second detection elements 21 are respectively installed in the two second mounting positions; the second angle detection device further includes a second connecting portion 24. One end of the second connecting portion 24 is connected to the rotating shaft of the second detection element 21, and the other end of the second connecting portion 24 is connected to the second rotating member 22.

[0062] It should be noted that the structure of the second mounting bracket 23 is basically the same as that of the first mounting bracket 13, and the structure of the second connecting portion 24 is basically the same as that of the first connecting portion 14, which will not be elaborated here. The fork in the second connecting portion 24 can be directly connected to the telescopic channel 50 without setting a connecting rod.

[0063] In one embodiment, the boarding bridge further includes a controller and an alarm. The alarm, the first detection element 11, and the second detection element 21 are all connected to the controller; the controller is configured to control the alarm to give an alarm when the difference between the measurement results of the two first detection elements 11 is greater than a first set value; the controller is configured to control the alarm to give an alarm when the difference between the measurement results of the two second detection elements 21 is greater than a second set value. When the difference between the measurement results of the two first detection elements 11 is greater than the first set value and the difference between the measurement results of the two second detection elements 21 is greater than the second set value, the controller can control the alarm to give an alarm respectively. Exemplarily, the controller can be a Siemens 1500 PLC.

[0064] Exemplarily, the categories of the alarm can be divided into three levels: warning, error prompt, and fatal fault. Taking the first detection element 11 as an example, when the deviation between the difference between the measurement results of the two first detection elements 11 and the first set value is small, the controller controls the alarm to give a warning to remind the user to perform maintenance; when the deviation between the difference between the measurement results of the two first detection elements 11 and the first set value exceeds the allowable deviation or there is a wire break, the controller controls the alarm to give an error prompt, and at this time, the first detection element 11 needs to be maintained or replaced.

[0065] In order to realize more reliable operation of the boarding bridge, the boarding bridge further includes a voltage detection sensor, a wire break detection sensor, and an electromagnetic interference sensor. The voltage detection sensor, the wire break detection sensor, and the electromagnetic interference sensor are all connected to the controller. If the controller detects an irrecoverable fault that causes the boarding bridge to be unable to be used normally, it will control the alarm to give a fatal fault prompt. At this time, it is necessary to stop the bridge to find out the reason and perform maintenance and repair.

[0066] In one embodiment, the boarding bridge further includes a laser range sensor for detecting the distance between the boarding bridge and the aircraft door.

[0067] For a remote or driverless boarding bridge to achieve distance detection from the aircraft door and anti-collision protection between the boarding bridge and the wing or engine, a laser range sensor for distance detection is added. However, most of the current laser detection sensors on the market cannot be used in a low-temperature environment. For such detection components that can be stored at low temperatures but cannot operate in a low-temperature environment, the boarding bridge provided in this embodiment further includes a heat preservation device, which adopts the method of heat insulation or heating to enable the detection component to operate in a suitable environment.

[0068] In some embodiments, as shown in Figure 6 the heat preservation device includes a heat preservation layer 31 and a resistance wire 32. The heat preservation layer 31 is arranged outside the laser range sensor, and the resistance wire 32 is used to generate heat when powered on, so as to create a suitable operating environment for the detection component.

[0069] Exemplarily, the heat preservation layer 31 can be a housing made of heat preservation material, and the resistance wire 32 can be arranged on the inner surface of the heat preservation layer 31.

[0070] Regarding the power supply to the resistance wire 32, considering that the mains power may be disconnected, once the power is cut off, it may cause irreversible damage to some detection components operating in a low-temperature environment. Therefore, the heat preservation device further includes an uninterruptible power supply (UPS), and the uninterruptible power supply is connected to the resistance wire 32 to ensure that a short power cut will not damage the detection component itself.

[0071] Based on the decisive role played by the accuracy and stability of the detection component in the reliability of the operation of the remote or driverless boarding bridge, in order to essentially ensure the reliability of the detection component during detection, two aspects need to be considered when selecting a detection component that can adapt to a low-temperature environment: on the one hand, the storage temperature of the detection component must meet the requirement that it can still be stored at -40°C; on the other hand, the operating temperature of the detection component needs to be able to start and operate normally at -40°C.

[0072] The materials of the detection components will undergo physical changes in a low-temperature environment. Therefore, the detection components must meet the storage temperature requirements when used in a low-temperature environment. At the same time, the operating temperature is also a major indicator. The detection components that can operate in a low-temperature environment take into account the detection errors caused by the influence of physical characteristics (such as thermal expansion and contraction, etc.) of the detection components in a low-temperature environment during the design stage. The rotation angle of the rotating platform and the rotation angle of the receiving port 40 are key system input parameters during the remote or automatic receiving process, and play a decisive role in whether the boarding bridge can accurately dock with the aircraft cabin door and wing anti-collision protection. Therefore, the first detection component 11, the second detection component 21, and the laser range finder in this embodiment are all detection components with a minimum operating temperature and a minimum storage temperature not higher than -40°C, which essentially ensures the accuracy and stability of parameter detection, and there is no need to replace the detection components multiple times according to the different environments where the boarding bridge is located.

[0073] It should be understood that for the same detection component, its operating temperature and storage temperature can be the same or different.

[0074] In addition to ensuring the accuracy of parameter detection, the stable transmission of parameters is also an important factor to consider. The materials of the cable insulation layer and protective layer used for data transmission need to be stable and reliable at -40°C without undergoing physical changes.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A boarding bridge, characterized in that: It includes a receiving platform and a rotating platform, the receiving platform is provided with a first angle detection device, and the rotating platform is provided with a second angle detection device; the first angle detection device includes two redundantly arranged first detection elements, the two first detection elements are coaxially arranged, and are used to measure the rotation angle of the receiving platform; the second angle detection device includes two redundantly arranged second detection elements; the two second detection elements are coaxially arranged, and are used to measure the rotation angle of the rotating platform.

2. The boarding bridge according to claim 1, characterized in that: The receiving platform includes a first fixed component and a first rotating component, and the first rotating component can rotate relative to the first fixed component; the first fixed component includes a first bottom plate and a first top plate, and the first bottom plate is located below the first top plate; The first angle detection device is installed on a side of the first bottom plate facing the first top plate; Or, the first angle detection device is installed on a side of the first bottom plate away from the first top plate; Or, the first angle detection device is installed on a side of the first top plate facing the first bottom plate; Alternatively, the first angle detection device is installed on a side of the first top plate away from the first bottom plate.

3. The boarding bridge according to claim 2, characterized in that: It also includes a first mounting frame, which is provided with two first mounting positions, and the two first detection elements are respectively installed at the two first mounting positions; the first angle detection device also includes a first connecting part, one end of the first connecting part is connected to the rotating shaft of the first detection element, and the other end of the first connecting part is connected to the first rotating part.

4. The boarding bridge according to claim 1, characterized in that: The rotating platform includes a second fixed component and a second rotating component, and the second rotating component can rotate relative to the second fixed component; the second fixed component includes a second bottom plate and a second top plate, and the second bottom plate is located below the second top plate; The second angle detection device is installed on a side of the second bottom plate facing the second top plate, or the second angle detection device is installed above the second top plate to measure the rotation angle of the second rotating component.

5. The boarding bridge according to claim 4, characterized in that: It also includes a second mounting frame, which is arranged on the second fixed component. The second mounting frame is provided with two second mounting positions, and two second detection elements are respectively installed at the two second mounting positions; the second angle detection device also includes a second connecting part, one end of the second connecting part is connected to the rotating shaft of the second detection element, and the other end of the second connecting part is connected to the second rotating component.

6. The boarding bridge according to claim 1, characterized in that: It also includes a controller and an alarm, wherein the alarm, the first detection element and the second detection element are all connected to the controller; the controller is configured to control the alarm to sound an alarm when the difference between the measurement results of the two first detection elements is greater than a first set value; and / or the controller is configured to control the alarm to sound an alarm when the difference between the measurement results of the two second detection elements is greater than a second set value.

7. The boarding bridge according to claim 6, characterized in that: It also includes a voltage detection sensor, a disconnection detection sensor and an electromagnetic interference sensor, and the voltage detection sensor, the disconnection detection sensor and the electromagnetic interference sensor are all connected to the controller.

8. The boarding bridge according to any one of claims 1 to 7, characterized in that: It also includes a laser distance measuring sensor, which is used to detect the distance between the boarding bridge and the aircraft door.

9. The boarding bridge according to claim 8, characterized in that: It also includes a heat preservation device, which includes a heat preservation layer and a resistance wire, the heat preservation layer is arranged outside the laser ranging sensor, and the resistance wire is used to generate heat when powered on; And / or, the first detection element, the second detection element and the laser ranging sensor are detection elements whose minimum operating temperature and minimum storage temperature are both no higher than -40°C.

10. The boarding bridge according to claim 9, characterized in that: The heat preservation device also includes an uninterruptible power supply, and the uninterruptible power supply is connected to the resistance wire.

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