Traveling mechanism and boarding bridge

Abstract

The application relates to the technical field of boarding bridges, in particular to a walking mechanism and a boarding bridge. The walking mechanism comprises a first driving mechanism, a second driving mechanism, a clutch device and a walking wheel assembly. The power output shaft of the first driving mechanism is in transmission connection with the walking wheel assembly. The walking mechanism has a normal working state and an emergency bridge withdrawal working state. In the normal working state, the second driving mechanism is separated from the tail shaft of the first driving mechanism through the clutch device. In the emergency bridge withdrawal working state, the second driving mechanism is connected with the tail shaft of the first driving mechanism through the clutch device to drive the power output shaft of the first driving mechanism to rotate. In the emergency bridge withdrawal working state, the second driving mechanism is connected with the tail shaft of the first driving mechanism through the clutch device to drive the power output shaft of the first driving mechanism to rotate, thereby driving the walking wheel assembly to move, so that the bridge withdrawal work can be started quickly, and the bridge withdrawal work efficiency is improved.

Description

Technical Field

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

[0002] Airport boarding bridges are movable, lift-up passageways used in airports to connect the departure lounge to aircraft. One end of a boarding bridge connects to a boarding gate in the terminal, and the other end connects to the aircraft door, allowing passengers to board or disembark. In case of emergencies, boarding bridges need to be evacuated using emergency evacuation methods. Currently, airport boarding bridge emergency evacuation plans mainly include conventional crank-operated evacuation and mop-operated evacuation. Conventional crank-operated evacuation is manually driven and inefficient; mop-operated evacuation requires the use of a tow truck, but this involves time-consuming and labor-intensive cross-departmental collaboration. Summary of the Invention

[0003] The purpose of this application is to provide a walking mechanism and boarding bridge to improve the efficiency of bridge removal work.

[0004] To achieve the above objectives, this application provides a walking mechanism, including a first drive mechanism, a second drive mechanism, a clutch device, and a walking wheel assembly. The power output shaft of the first drive mechanism is connected to the walking wheel assembly. The walking mechanism has a normal working state and an emergency bridge removal working state. In the normal working state, the second drive mechanism is separated from the tail shaft of the first drive mechanism through the clutch device. In the emergency bridge removal working state, the second drive mechanism is connected to the tail shaft of the first drive mechanism through the clutch device to drive the power output shaft of the first drive mechanism to rotate.

[0005] In one embodiment of this application, the clutch device includes a telescopic coupling and a clutch assembly. One end of the telescopic coupling is connected to the second drive mechanism for transmission, and the other end of the telescopic coupling is separated from or connected to the tail shaft of the first drive mechanism through the clutch assembly.

[0006] In one embodiment of this application, the walking mechanism further includes a frame, and both the first drive mechanism and the second drive mechanism are mounted on the frame;

[0007] The clutch device further includes a first check valve assembly, which includes a first mounting base, a first limiting member, and a first elastic member. The first mounting base is connected to the frame, and the first limiting member is rotatably connected to the first mounting base. The first limiting member has a first limiting surface and is rotatable in a first direction to separate the first limiting surface from the clutch assembly. The first elastic member is rotatable in a second direction to restrict the clutch assembly from moving away from the tail shaft of the first drive mechanism. The second direction is opposite to the first direction.

[0008] And / or,

[0009] The clutch device further includes a second check valve assembly, which includes a second mounting base, a second limiting member, and a second elastic member. The second mounting base is connected to the frame, and the second limiting member is rotatably connected to the second mounting base. The second limiting member has a second limiting surface and is rotatable in a third direction to separate the second limiting surface from the clutch assembly. The second elastic member allows the second limiting member to rotate in a fourth direction to restrict the clutch assembly from moving towards the tail shaft of the first drive mechanism. The fourth direction is opposite to the third direction.

[0010] In one embodiment of this application, the retractable coupling includes a connecting sleeve and a connecting shaft, the connecting shaft reciprocating relative to the connecting sleeve, the connecting sleeve having a first through hole, and the connecting shaft having a positioning hole;

[0011] The clutch device also includes a positioning rod. When the telescopic coupling is connected to the tail shaft of the first drive mechanism, the positioning hole is aligned with the first through hole, and the positioning rod passes through the first through hole and the positioning hole.

[0012] In one embodiment of this application, the connecting sleeve is provided with a second through hole, which is located on the side of the first through hole away from the tail shaft of the first drive mechanism. When the telescopic coupling is separated from the tail shaft of the first drive mechanism, the positioning hole is aligned with the second through hole, and the positioning rod passes through the second through hole and the positioning hole.

[0013] In one embodiment of this application, the clutch assembly includes a drive shaft and an elastic buckle, and the telescopic coupling is connected to one end of the drive shaft; the drive shaft is provided with a receiving cavity for accommodating the tail shaft sleeve of the first drive mechanism, and the elastic buckle is rotatably connected to the cavity wall of the receiving cavity so that the tail shaft sleeve can push open the elastic buckle; the second drive mechanism drives the drive shaft to rotate through the telescopic coupling so that the free end of the elastic buckle is confined within the groove of the tail shaft sleeve.

[0014] In one embodiment of this application, the elastic buckle includes an elastic reset member and a claw. The cavity wall of the receiving cavity is provided with an opening. One end of the claw is rotatably connected to the opening. The claw can rotate into the opening under the push of the tail shaft sleeve. When the claw is aligned with the groove of the tail shaft sleeve, the elastic reset member can limit the free end of the claw to be located in the groove.

[0015] In one embodiment of this application, the clutch device is a manual clutch or an electromagnetic clutch.

[0016] In one embodiment of this application, the walking mechanism further includes a first power supply device and a second power supply device, wherein the first power supply device is used to supply power to the first drive mechanism, and the second power supply device is used to supply power to the second drive mechanism.

[0017] For the purposes described above, this application also provides a boarding bridge, including the aforementioned walking mechanism.

[0018] The main benefits of this application are:

[0019] The traveling mechanism provided in this application includes a first drive mechanism, a second drive mechanism, a clutch device, and a traveling wheel assembly. The power output shaft of the first drive mechanism is connected to the traveling wheel assembly. The traveling mechanism has a normal working state and an emergency bridge removal working state. In the normal working state, the second drive mechanism is separated from the tail shaft of the first drive mechanism through the clutch device. In the emergency bridge removal working state, the second drive mechanism is connected to the tail shaft of the first drive mechanism through the clutch device to drive the power output shaft of the first drive mechanism to rotate. Based on this structure, the traveling mechanism provided in this application, when the traveling mechanism is in the normal working state, the separation of the second drive mechanism from the tail shaft of the first drive mechanism through the clutch device will not affect the normal working of the first drive mechanism. At this time, the first drive mechanism drives the traveling wheel assembly to move. In the emergency bridge removal working state, the second drive mechanism is connected to the tail shaft of the first drive mechanism through the clutch device to drive the power output shaft of the first drive mechanism to rotate, thereby driving the traveling wheel assembly to move, so as to quickly start the bridge removal work and improve the bridge removal work efficiency. Attached Figure Description

[0020] 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.

[0021] Figure 1 A schematic diagram of the walking mechanism provided in an embodiment of this application;

[0022] Figure 2 for Figure 1 A magnified view of a section at point I;

[0023] Figure 3 A top view of the walking mechanism provided in the embodiments of this application;

[0024] Figure 4 for Figure 3 A sectional view along line AA;

[0025] Figure 5 for Figure 4 Enlarged view of a section at point II;

[0026] Figure 6 Another structural schematic diagram of the walking mechanism provided in the embodiments of this application;

[0027] Figure 7 for Figure 6 Enlarged view of a section at point III;

[0028] Figure 8 for Figure 6 A top view of the walking mechanism is shown;

[0029] Figure 9 for Figure 8 A cross-sectional view along line BB;

[0030] Figure 10 for Figure 9 Enlarged view of a section at point IV;

[0031] Figure 11 This is a schematic diagram of a third structure of the walking mechanism provided in an embodiment of this application.

[0032] The annotations in the attached figures are explained as follows:

[0033] 1-First drive mechanism; 11-Tail shaft; 111-Tail shaft sleeve; 1111-Groove; 12-Power output shaft; 2-Second drive mechanism; 3-Clutch device; 31-Retractable coupling; 311-Connecting sleeve; 3111-First through hole; 3112-Second through hole; 312-Connecting shaft; 3121-Positioning hole; 32-Clutch assembly; 321-Drive shaft; 3211-Receiving cavity; 3212-Opening; 322-Elastic reset element; 323-Claw; 324-Fixing sleeve; 33-First check valve assembly; 331-First mounting base; 332-First limiting element; 3321-First limiting surface; 3322-Guide inclined surface; 34-Second check valve assembly; 35-Positioning rod; 351-First rod segment; 352-Second rod segment; 353-Spring plunger; 4-Frame. Detailed Implementation

[0034] 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.

[0035] 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.

[0036] 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.

[0037] See Figures 1 to 11As shown, this embodiment provides a walking mechanism, including a first drive mechanism 1, a second drive mechanism 2, a clutch device 3, and a walking wheel assembly. The power output shaft 12 of the first drive mechanism 1 is connected to the walking wheel assembly. The walking mechanism has a normal working state and an emergency bridge removal working state. In the normal working state, the second drive mechanism 2 is separated from the tail shaft 11 of the first drive mechanism 1 through the clutch device 3. In the emergency bridge removal working state, the second drive mechanism 2 is connected to the tail shaft 11 of the first drive mechanism 1 through the clutch device 3 to drive the power output shaft 12 of the first drive mechanism 1 to rotate.

[0038] In this embodiment, the traveling mechanism operates normally. The second drive mechanism 2 is disengaged from the tail shaft 11 of the first drive mechanism 1 via the clutch device 3, ensuring the normal operation of the first drive mechanism 1. At this time, the first drive mechanism 1 drives the traveling wheel assembly to move. In the emergency bridge removal operation state, the second drive mechanism 2 connects to the tail shaft 11 of the first drive mechanism 1 via the clutch device 3, causing the power output shaft 12 of the first drive mechanism 1 to rotate, thereby driving the traveling wheel assembly to move, quickly initiating the bridge removal operation and improving its efficiency. Since only one of the first drive mechanism 1 and the second drive mechanism 2 operates, the safety of the bridge removal operation is enhanced.

[0039] In this embodiment, both the first drive mechanism 1 and the second drive mechanism 2 can be geared motors.

[0040] In one embodiment, the walking mechanism further includes a first power supply device and a second power supply device, wherein the first power supply device is used to supply power to the first drive mechanism and the second power supply device is used to supply power to the second drive mechanism.

[0041] In one embodiment, the traveling mechanism further includes a control system configured to disconnect the first power supply from the first drive mechanism 1 when the traveling mechanism is in an emergency bridge retraction working state. The control system is also configured to supply power to the second drive mechanism 2 when the second drive mechanism 2 is connected to the tail shaft 11 of the first drive mechanism 1 via a clutch device 3. Exemplarily, the control system can be an existing control box installed at a designated location on the boarding bridge, and the control box is communicatively connected to the boarding bridge.

[0042] When the traveling mechanism is in the emergency bridge removal working state, the first power supply device is disconnected from the first drive mechanism 1. At the same time, the brake of the first drive mechanism 1 is released. When the second drive mechanism 2 is connected to the tail shaft 11 of the first drive mechanism 1 through the clutch device 3, the second power supply device supplies power to the second drive mechanism 2, so that the second drive mechanism 2 can drive the power output shaft 12 of the first drive mechanism 1 to rotate, thereby driving the traveling wheel assembly to move in order to carry out the bridge removal work.

[0043] When the walking mechanism is in normal working condition, the second power supply device does not supply power to the second drive mechanism 2.

[0044] It should be noted that the first power supply device can be part of the boarding bridge power supply system; the second power supply device can be an independent mobile power source or a power supply circuit in the boarding bridge power supply system that is different from the first power supply device. When the first power supply device is disconnected, the second drive mechanism 2 is connected to other power supply circuits.

[0045] In one embodiment, the clutch device 3 includes a telescopic coupling 31 and a clutch assembly 32. One end of the telescopic coupling 31 is connected to the second drive mechanism 2 for transmission, and the other end of the telescopic coupling 31 is separated from or connected to the tail shaft 11 of the first drive mechanism 1 through the clutch assembly 32.

[0046] In this embodiment, a telescopic coupling 31 is used, which allows the telescopic coupling to be connected to or separated from the tail shaft 11 of the first drive mechanism 1 without disassembling or moving the second drive mechanism 2.

[0047] For example, the telescopic coupling 31 can be a telescopic universal coupling. One end of the telescopic coupling 31 can always be connected to the second drive mechanism 2. When the traveling mechanism is in normal working condition, the other end of the telescopic coupling 31 is separated from the tail shaft 11 of the first drive mechanism 1 through the clutch assembly 32. When the traveling mechanism is in emergency bridge removal working condition, the other end of the telescopic coupling 31 is connected to the tail shaft 11 of the first drive mechanism 1 through the clutch assembly 32.

[0048] In one embodiment, see Figure 5 , Figure 7 and Figure 10 As shown, the clutch assembly 32 includes a drive shaft 321 and an elastic buckle. A telescopic coupling 31 is connected to one end of the drive shaft 321. The drive shaft 321 is provided with a receiving cavity 3211, which is used to receive the tail shaft sleeve 111 of the first drive mechanism 1. The elastic buckle is rotatably connected to the cavity wall of the receiving cavity 3211 so that the tail shaft sleeve 111 can push open the elastic buckle. The second drive mechanism 2 drives the drive shaft 321 to rotate through the telescopic coupling 31 so that the free end of the elastic buckle is limited to the groove 1111 of the tail shaft sleeve 111.

[0049] In this embodiment, the end of the telescopic coupling 31 is provided with a through hole, and the drive shaft 321 is fixedly installed in the through hole. The clutch assembly 32 also includes a fixing sleeve 324, which is fixedly sleeved on the outside of the drive shaft 321.

[0050] In this embodiment, see Figure 7As shown, the tail shaft 11 of the first drive mechanism 1 is fitted with a tail shaft sleeve 111, and the tail shaft sleeve 111 is provided with a groove 1111. For example, there are two grooves 1111, which are arranged opposite each other radially along the tail shaft sleeve 111. The groove 1111 penetrates the end face of the free end of the tail shaft sleeve 111 to ensure that after the bridge removal is completed, the telescopic coupling 31 can be directly withdrawn in a direction away from the tail shaft sleeve 111, realizing the rapid separation of the telescopic coupling 31 from the tail shaft sleeve 111. The width of the groove 1111 is adapted to the thickness of the chuck 323 to ensure that there is no large relative rotation or shaking between the tail shaft sleeve 111 and the drive shaft 321, thereby improving the stability of the bridge removal process.

[0051] When it is necessary to connect the other end of the retractable coupling 31 to the tail shaft 11 of the first drive mechanism 1 via the clutch assembly 32, the tail shaft sleeve 111 of the first drive mechanism 1 is directly installed in the receiving cavity 3211. During the insertion of the tail shaft sleeve 111 into the receiving cavity 3211, it can push open the elastic buckle. After the tail shaft sleeve 111 is fully inserted into the receiving cavity 3211, the second drive mechanism 2 is started. The second drive mechanism 2 drives the transmission shaft 321 to rotate until the elastic buckle is aligned with the groove 1111 of the tail shaft sleeve 111. The free end of the elastic buckle is limited to the groove 1111, thereby transmitting the torque of the power output shaft 12 of the second drive mechanism 2 to the first drive mechanism 1 to realize the movement of the boarding bridge. The installation process is convenient and quick.

[0052] For example, see Figure 5 As shown, the elastic latch includes an elastic reset member 322 and a claw 323. The cavity wall of the receiving cavity 3211 is provided with an opening 3212. One end of the claw 323 is rotatably connected to the opening 3212. The claw 323 can rotate into the opening 3212 under the push of the tail shaft sleeve 111. When the claw 323 is aligned with the groove 1111 of the tail shaft sleeve 111, the elastic reset member 322 can limit the free end of the claw 323 to be located within the groove 1111. The number of elastic latches is at least one. The cross-sectional shape of the receiving cavity 3211 is circular to fit the tail shaft sleeve 111.

[0053] In this embodiment, there are two elastic buckles, which are arranged opposite each other radially along the receiving cavity 3211.

[0054] In this embodiment, see Figure 5 As shown, the elastic reset member 322 can be a spring sheet, which is in the shape of a curved plate. For example, the spring sheet includes two integrally formed plate portions, which are set at an obtuse angle. One plate portion is connected to the drive shaft 321, and the other plate portion is in contact with or fixedly connected to the claw 323.

[0055] In other embodiments, the elastic reset member 322 can also be a torsion spring. A shaft is provided on the sidewall of the opening 3212, and the torsion spring and the pawl 323 are fitted onto the shaft. One end of the torsion spring is connected to the pawl 323, and the other end of the torsion spring is connected to the cavity wall of the receiving cavity 3211, with the pawl 323 corresponding to the position of the opening 3212. When the elastic reset member 322 is in its natural state, the free end of the pawl 323 is located inside the receiving cavity 3211.

[0056] During installation, the tail shaft sleeve 111 is inserted into the receiving cavity 3211. The end of the tail shaft sleeve 111 can push open the pawl 323, causing the pawl 323 to rotate into the opening 3212. At this time, the elastic reset member 322 undergoes elastic deformation. After the tail shaft sleeve 111 is fully inserted into the receiving cavity 3211, the second drive mechanism 2 is activated. For example, the second drive mechanism 2 can be jogged to drive the transmission shaft 321 to rotate. When the transmission shaft 321 rotates until the pawl 323 aligns with the groove 1111 of the tail shaft sleeve 111, the pawl 323 is limited to being located within the groove 1111 under the elastic force of the elastic reset member 322, thus realizing the connection between the telescopic coupling 31 and the tail shaft 11 of the first drive mechanism 1.

[0057] In one embodiment, see Figure 1 As shown, the walking mechanism also includes a frame 4, on which the first drive mechanism 1 and the second drive mechanism 2 are both mounted. For example, both the first drive mechanism 1 and the second drive mechanism 2 are fixedly mounted on the frame 4.

[0058] To improve the safety of bridge removal operations, the clutch device in this embodiment also has the function of limiting the clutch assembly.

[0059] In one possible design, the clutch mechanism also includes a first check valve assembly 33, see [reference needed]. Figure 1 and Figure 2 As shown, the first check valve assembly 33 includes a first mounting base 331, a first limiting member 332, and a first elastic member. The first mounting base 331 is connected to the frame 4, and the first limiting member 332 is rotatably connected to the first mounting base 331. The first limiting member 332 has a first limiting surface 3321. The first limiting member 332 can rotate in a first direction to separate the first limiting surface 3321 from the clutch assembly 32. The first elastic member can make the first limiting member 332 rotate in a second direction to restrict the clutch assembly 32 from moving away from the tail shaft 11 of the first drive mechanism 1. The second direction is opposite to the first direction.

[0060] Specifically, when the bridge needs to be removed, the first limiting member 332 can be pressed down to rotate the first limiting member 332 in the first direction (e.g., clockwise direction), that is, the first limiting member 332 moves away from the clutch assembly 32. At this time, the telescopic coupling 31 is pushed towards the first drive mechanism 1 until the tail shaft sleeve 111 is located in the receiving cavity 3211. The end of the tail shaft sleeve 111 pushes open the pawl 323, so that the pawl 323 rotates into the opening 3212. At this time, the elastic reset member 322 undergoes elastic deformation. After the tail shaft sleeve 111 is fully inserted into the receiving cavity 3211, the second drive mechanism 2 is activated, causing the drive mechanism 2 to drive the transmission shaft 321 to rotate. When the transmission shaft 321 rotates until the pawl 323 aligns with the groove 1111 of the tail shaft sleeve 111, the pawl 323 is limited to being within the groove 1111 by the elastic force of the elastic reset member 322, thus achieving the connection between the telescopic coupling 31 and the tail shaft 11 of the first drive mechanism 1. At this time, the first limiting member 332 is released, and the first limiting member 332 rotates in the second direction (e.g., counterclockwise) under the elastic force of the first elastic member. See [link to relevant documentation]. Figure 2 As shown, until the first limiting surface 3321 is located on the side of the fixed sleeve 324 away from the tail shaft 11 of the first drive mechanism 1, for example, see Figure 2 As shown, the first limiting surface 3321 can contact the end face of the tail shaft 11 of the fixed sleeve 324 away from the first drive mechanism 1, or there can be a gap between the two, so as to prevent the telescopic coupling 31 from directly exiting in the direction away from the tail shaft sleeve 111 during the bridge removal process.

[0061] After the bridge is removed, press the first limiting member 332 to release the limiting effect of the first limiting surface 3321 on the fixed sleeve 324, so that the telescopic coupling 31 can be directly withdrawn in the direction away from the tail shaft sleeve 111, thereby realizing the rapid separation of the telescopic coupling 31 from the tail shaft sleeve 111.

[0062] It should be noted that the first limiting surface 3321 can restrict the fixed sleeve 324 from moving axially away from the first driving mechanism 1, but does not affect the fixed sleeve 324 from rotating together with the rotating shaft.

[0063] In this possible design, see Figure 2 and Figure 3As shown, the clutch device also includes a second check valve assembly 34, which includes a second mounting base, a second limiting member, and a second elastic member. The second mounting base is connected to the frame 4, and the second limiting member is rotatably connected to the second mounting base. The second limiting member has a second limiting surface and is rotatable in a third direction to separate the second limiting surface from the clutch assembly 32. The second elastic member is rotatable in a fourth direction to restrict the clutch assembly 32 from moving towards the tail shaft 11 of the first drive mechanism 1. The fourth direction is opposite to the third direction.

[0064] The structure and working principle of the second check valve assembly 34 are basically the same as those of the first check valve assembly 33. Specifically, under normal operating conditions, the telescopic coupling 31 is separated from the tail shaft 11 of the first drive mechanism 1. At this time, the second limiting surface of the second limiting member is located on the side of the fixed sleeve 324 near the tail shaft 11 of the first drive mechanism 1. For example, the second limiting surface can contact the end face of the fixed sleeve 324 near the tail shaft 11 of the first drive mechanism 1, or there can be a gap between the two, thereby restricting the telescopic coupling 31 from moving towards the tail shaft 11 of the first drive mechanism 1. This prevents the telescopic coupling 31 from being mistakenly connected to the tail shaft 11 of the first drive mechanism 1 in non-emergency situations due to vibration or other reasons, further improving safety.

[0065] When the bridge needs to be removed, press down on the second limiting member to make it rotate in a third direction (e.g., clockwise), that is, the second limiting member moves away from the clutch assembly 32 until the second limiting surface separates from the clutch assembly 32. At this time, push the telescopic coupling 31 towards the first drive mechanism 1 to connect the telescopic coupling 31 with the tail shaft sleeve 111.

[0066] It should be noted that when the bridge needs to be removed, the first limiting member 332 and the second limiting member can be pressed down simultaneously, allowing the telescopic coupling 31 to move towards the tail shaft sleeve 111 until the telescopic coupling 31 is connected to the tail shaft 11 of the first drive mechanism 1. Then, the first limiting member 332 and the second limiting member can be released. Alternatively, only the second limiting member can be pressed down. When the telescopic coupling 31 moves towards the tail shaft sleeve 111, it can abut against the guide slope 3322 of the first limiting member 332 and apply a force to the first limiting member, causing the first limiting member to rotate in the first direction, which facilitates pushing the telescopic coupling 31 towards the first drive mechanism 1.

[0067] After the bridge is removed, press the first limiting member 332 to release the first limiting surface 3321 from the limiting effect on the fixed sleeve 324. The second limiting member also has a guide slope. When the telescopic coupling 31 moves away from the tail shaft sleeve 111, it can abut against the guide slope of the second limiting member and apply a force to the second limiting member, causing the second limiting member to rotate in a third direction, so that the second limiting surface releases the limiting effect on the fixed sleeve, thereby allowing the telescopic coupling 31 to exit directly in the direction away from the tail shaft sleeve 111, realizing the rapid separation of the telescopic coupling 31 from the tail shaft sleeve 111.

[0068] After the telescopic coupling 31 separates from the tail shaft sleeve 111, the second limiting member rotates in the fourth direction (e.g., counterclockwise) under the elastic force of the second elastic member until the second limiting surface can stop the surface of the fixed sleeve 324 near the tail shaft 11 of the first drive mechanism 1.

[0069] It is worth noting that in other embodiments, the first check component 33 and the second check component 34 may also be selectively configured.

[0070] In another possible design, see Figures 6 to 10 As shown, the telescopic coupling 31 includes a connecting sleeve 311 and a connecting shaft 312. The connecting shaft 312 reciprocates relative to the connecting sleeve 311. The connecting sleeve 311 is provided with a first through hole 3111 and a second through hole 3112. The second through hole 3112 is located on the side of the first through hole 3111 away from the tail shaft 11 of the first drive mechanism 1. The connecting shaft 312 is provided with a positioning hole 3121. The clutch device also includes a positioning rod 35. When the telescopic coupling 31 is connected to the tail shaft 11 of the first drive mechanism 1, the positioning hole 3121 is aligned with the first through hole 3111, and the positioning rod 35 passes through the first through hole 3111 and the positioning hole 3121. When the telescopic coupling 31 is separated from the tail shaft 11 of the first drive mechanism 1, the positioning hole 3121 is aligned with the second through hole 3112, and the positioning rod 35 passes through the second through hole 3112 and the positioning hole 3121.

[0071] See Figure 9 and Figure 10 As shown, when it is necessary to connect the telescopic coupling 31 to the tail shaft 11 of the first drive mechanism 1, along... Figure 9 Push the connecting shaft 312 in the direction of arrow X until the positioning hole 3121 is aligned with the first through hole 3111. Then, insert the positioning rod 35 through the first through hole 3111 and the positioning hole 3121 to position the connecting shaft 312 and prevent it from moving away from the tail shaft 11 of the first drive mechanism 1. This ensures that the telescopic coupling 31 remains connected to the tail shaft 11 of the first drive mechanism 1 during the bridge removal process, thereby improving the continuity and safety of the bridge removal process.

[0072] See Figure 10 As shown, the end of the connecting shaft 312 is close to or abuts the inner end face of the connecting sleeve 311. At this time, the length of the telescopic coupling 31 is at its shortest. The telescopic coupling 31 is separated from the tail shaft 11 of the first drive mechanism 1. The positioning hole 3121 is aligned with the second through hole 3112. The positioning rod 35 is inserted through the second through hole 3112 and the positioning hole 3121 to position the connecting shaft 312 and prevent the connecting shaft 312 from moving towards the tail shaft 11 of the first drive mechanism 1. This prevents the telescopic coupling 31 from being mistakenly connected to the tail shaft 11 of the first drive mechanism 1 in non-emergency situations due to vibration or other reasons, and further improves safety.

[0073] For example, see Figure 10 As shown, the positioning rod 35 includes a first rod segment 351 and a second rod segment 352. The first rod segment 351 and the second rod segment 352 can be integrally formed. The diameter of the first rod segment 351 is larger than the diameter of the second rod segment 352. The diameter of the first rod segment 351 is larger than the diameter of the first through hole 3111 and the second through hole 3112. The diameter of the second rod segment 352 is smaller than the diameter of the first through hole 3111 and the second through hole 3112. A spring plunger 353 is provided near the free end of the second rod segment 352. When the positioning rod is in place... When the positioning rod 35 passes through the second through hole 3112 and the positioning hole 3121, the first rod segment 351 is located outside the connecting sleeve 311, and the spring plunger 353 is in a retracted state inside the positioning hole. When the end of the second rod segment 352 passes through to the outside of the connecting sleeve 311, the spring plunger 353 is also located outside the connecting sleeve 311. At this time, the spring plunger 353 pops out and forms a limit with the circumferential surface of the connecting sleeve 311, preventing the positioning rod 35 from separating from the connecting sleeve and the connecting shaft without the action of external force.

[0074] When it is necessary to remove the positioning rod 35, press the spring plunger 353 so that the spring plunger 353 can be removed from the second through hole 3112 and the positioning hole 3121 together with the positioning rod 35.

[0075] Of course, the connecting sleeve 311 can also only have the first through hole 3111. When the positioning rod 35 passes through the first through hole 3111 and the positioning hole 3121, it mainly ensures that the telescopic coupling 31 is always connected to the tail shaft 11 of the first drive mechanism 1 during the bridge removal process, thereby improving the continuity and safety of the bridge removal process.

[0076] In other embodiments, see Figure 11 As shown, clutch device 3 can also be a manual clutch, such as a gear coupling. Of course, clutch device 3 can also be an electromagnetic clutch.

[0077] This embodiment also provides a boarding bridge, including the walking mechanism provided in this embodiment.

[0078] The boarding bridge provided in this embodiment utilizes the walking mechanism described herein. When the walking mechanism is in normal operation, the second drive mechanism 2 is disengaged from the tail shaft 11 of the first drive mechanism 1 via the clutch device 3, without affecting the normal operation of the first drive mechanism 1. At this time, the first drive mechanism 1 drives the walking wheel assembly to move. In the emergency bridge removal operation state, the second drive mechanism 2 connects to the tail shaft 11 of the first drive mechanism 1 via the clutch device 3, driving the power output shaft 12 of the first drive mechanism 1 to rotate, thereby driving the walking wheel assembly to move, thus quickly initiating the bridge removal operation and improving its efficiency. Since only one of the first drive mechanism 1 and the second drive mechanism 2 operates, the safety of the bridge removal operation is improved.

[0079] 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 walking mechanism, characterized in that, It includes a first drive mechanism, a second drive mechanism, a clutch device, and a traveling wheel assembly. The power output shaft of the first drive mechanism is connected to the traveling wheel assembly. The traveling mechanism has a normal working state and an emergency bridge removal working state. In the normal working state, the second drive mechanism is separated from the tail shaft of the first drive mechanism through the clutch device. In the emergency bridge removal working state, the second drive mechanism is connected to the tail shaft of the first drive mechanism through the clutch device to drive the power output shaft of the first drive mechanism to rotate. The clutch device includes a telescopic coupling and a clutch assembly. One end of the telescopic coupling is connected to the second drive mechanism, and the other end of the telescopic coupling is separated from or connected to the tail shaft of the first drive mechanism through the clutch assembly. It also includes a frame, on which both the first drive mechanism and the second drive mechanism are mounted; The clutch device further includes a first check valve assembly, which includes a first mounting base, a first limiting member, and a first elastic member. The first mounting base is connected to the frame, and the first limiting member is rotatably connected to the first mounting base. The first limiting member has a first limiting surface and is rotatable in a first direction to separate the first limiting surface from the clutch assembly. The first elastic member is rotatable in a second direction to restrict the clutch assembly from moving away from the tail shaft of the first drive mechanism. The second direction is opposite to the first direction. And / or, The clutch device further includes a second check valve assembly, which includes a second mounting base, a second limiting member, and a second elastic member. The second mounting base is connected to the frame, and the second limiting member is rotatably connected to the second mounting base. The second limiting member has a second limiting surface and is rotatable in a third direction to separate the second limiting surface from the clutch assembly. The second elastic member allows the second limiting member to rotate in a fourth direction to restrict the clutch assembly from moving towards the tail shaft of the first drive mechanism. The fourth direction is opposite to the third direction.

2. The walking mechanism according to claim 1, characterized in that, The retractable coupling includes a connecting sleeve and a connecting shaft. The connecting shaft reciprocates relative to the connecting sleeve. The connecting sleeve is provided with a first through hole, and the connecting shaft is provided with a positioning hole. The clutch device also includes a positioning rod. When the telescopic coupling is connected to the tail shaft of the first drive mechanism, the positioning hole is aligned with the first through hole, and the positioning rod passes through the first through hole and the positioning hole.

3. The walking mechanism according to claim 2, characterized in that, The connecting sleeve is provided with a second through hole, which is located on the side of the first through hole away from the tail shaft of the first drive mechanism. When the telescopic coupling is separated from the tail shaft of the first drive mechanism, the positioning hole is aligned with the second through hole, and the positioning rod passes through the second through hole and the positioning hole.

4. The walking mechanism according to claim 1, characterized in that, The clutch assembly includes a drive shaft and an elastic buckle. The telescopic coupling is connected to one end of the drive shaft. The drive shaft is provided with a receiving cavity for accommodating the tail shaft sleeve of the first drive mechanism. The elastic buckle is rotatably connected to the cavity wall of the receiving cavity so that the tail shaft sleeve can push open the elastic buckle. The second drive mechanism drives the drive shaft to rotate through the telescopic coupling so that the free end of the elastic buckle is confined within the groove of the tail shaft sleeve.

5. The walking mechanism according to claim 4, characterized in that, The elastic buckle includes an elastic reset member and a claw. The cavity wall of the receiving cavity is provided with an opening. One end of the claw is rotatably connected to the opening. The claw can rotate into the opening under the push of the tail shaft sleeve. When the claw is aligned with the groove of the tail shaft sleeve, the elastic reset member can limit the free end of the claw to be located in the groove.

6. The walking mechanism according to claim 1, characterized in that, The clutch device is a manual clutch or an electromagnetic clutch.

7. The walking mechanism according to any one of claims 1 to 6, characterized in that, It also includes a first power supply device and a second power supply device, wherein the first power supply device is used to supply power to the first drive mechanism and the second power supply device is used to supply power to the second drive mechanism.

8. A boarding bridge, characterized in that, The walking mechanism includes any one of claims 1 to 7.

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