Gangway door retraction device and gangway door assembly

Abstract

The present application relates to a kind of gangway door retraction device and gangway door assembly, belong to gangway door technical field, gangway door retraction device and gangway door assembly, gangway door assembly includes door frame, gangway door, gangway door lock and gangway door retraction device, gangway door retraction device includes door closing operation mechanism and connecting mechanism, connecting mechanism includes first connecting component and second connecting component, first connecting component includes handrail part and first tension part, handrail part has fixed part and movable part, second connecting component has second tension part.The present application is by the setting of first connecting component in handrail part and first tension part and second connecting component in second tension part, can release the more installation space of both sides in the width direction of gangway door, more conducive to the setting of other structures, so that the adaptability of the gangway door retraction device to small gangway door is better.

Description

Technical Field

[0001] This invention relates to a gangway door retraction device and a gangway door assembly, belonging to the field of gangway door technology. Background Technology

[0002] Currently, aircraft commonly use gangways for passengers to board and disembark. When in use, the gangway is opened and lowered to rest against the ground; when not in use, it is closed and retracted into the cabin. Therefore, a gangway retraction mechanism is needed to achieve the opening and closing of the gangway.

[0003] Existing gangway door retraction devices typically include two sets of connecting components for connecting the gangway door and the door frame. Each set of connecting components includes a handrail structure that functions as a handrail and a connecting structure that bears the load of the gangway door. This occupies most of the installation space on both sides of the gangway door in the width direction, which is not conducive to the installation of other structures and makes it poorly adaptable to small gangway doors.

[0004] Therefore, in order to free up more installation space and thus improve the adaptability to small gangway doors, a new optimized gangway door retraction device and gangway door assembly are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a gangway door retraction device and gangway door assembly that can free up more installation space and have better adaptability to small gangway doors.

[0006] This invention provides a gangway door retraction device for installation on a gangway door and its frame to enable the opening and closing of the gangway door, characterized by comprising:

[0007] A door closing mechanism, located on the gangway door, is used by the crew inside the engine room to pull the gangway door to rotate and close it; and

[0008] A retractable connecting mechanism is attached between the gangway door and the door frame to control the opening and closing of the gangway door.

[0009] The connecting mechanism includes:

[0010] The first connecting component connects the first side portion of the gangway door in the width direction to the corresponding door frame portion, and includes a handrail portion and a first tension portion.

[0011] The handrail has a fixed part and a movable part. One end of the fixed part is hinged to the door frame, one end of the first tension part is indirectly or directly hinged to the movable part, and the other end of the first tension part is hinged to the gangway door; and

[0012] The second connecting component connects the second side portion of the gangway door in the width direction to the corresponding door frame portion, and has a second tension portion.

[0013] The second tensioning part is hinged at one end to the gangway door and at the other end to the door frame.

[0014] The gangway door retraction device provided by the present invention may also have the following features:

[0015] Both the fixed part and the movable part are sleeve components, with the movable part being movably fitted inside the fixed part.

[0016] The circumferential surface of the movable part is provided with an outwardly extending protrusion, and the circumferential sidewall of the fixed part is provided with a moving groove that connects its interior and exterior, the moving groove extending along the axial direction of the fixed part.

[0017] The protrusion slides through the moving groove and is indirectly or directly hinged to the end of the first tension part.

[0018] When the gangway door is in the open position, the protrusion abuts against a side wall extending in the direction of the moving channel.

[0019] The gangway door retraction device provided by the present invention may also have the following features:

[0020] The free end of the fixed part has an opening for the movable part to pass through.

[0021] When the gangway door is in the open position, the movable part extends a certain distance from that end.

[0022] The gangway door retraction device provided by the present invention may also have the following features:

[0023] The first tension section includes:

[0024] Connector, fixed to the extended end of the protrusion; and

[0025] Two sets of tie rods,

[0026] One end of one set of tie rods is hinged to the connector, and the other end is hinged to the first position on the gangway door.

[0027] One end of the other set of tie rods is hinged to the connector, and the other end is hinged to the second position on the gangway door.

[0028] The first and second positions are spaced a certain distance apart along the length of the gangway door.

[0029] The gangway door retraction device provided by the present invention may also have the following features:

[0030] Among them, a set of tie rods installed relatively close to the free end of the gangway door includes two spaced first tie rods, one end of which is hinged to the connector and the other end is indirectly or directly hinged to the gangway door;

[0031] Another set of tie rods includes a second tie rod, one end of which is hinged to the connector and the other end of which is hinged to the gangway door;

[0032] The two first tie rods are located on opposite sides of the second tie rod in the radial direction.

[0033] The gangway door retraction device provided by the present invention may also have the following features:

[0034] The second tension section includes a rigid rod and a flexible rod with rotatable end connections.

[0035] The other end of the rigid member is hinged to the gangway door, and the other end of the flexible member is hinged to the door frame.

[0036] The gangway door retraction device provided by the present invention may also have the following features:

[0037] The door closing mechanism is located on one side of the gangway door in the width direction, and includes:

[0038] A winding drum is rotatably mounted on the side wall of the gangway door corresponding to that side.

[0039] The take-up belt is wound around a take-up drum, with one end fixed to the drum and the other free end forming an operating end for the crew to perform the door closing action; and

[0040] The elastic reset element, connected to the take-up drum drive, is used to drive the take-up drum to rotate back to its original position after the tension on the take-up belt is removed.

[0041] The gangway door retraction device provided by the present invention may also have the following features:

[0042] The door closing mechanism also includes an adhesive fixing structure for securing the free end of the winding tape to the side wall of the gangway door when not in operation, and includes:

[0043] An adhesive section is provided at the free end of the take-up tape; and

[0044] The adhesive mating part is located on the side wall of the gangway door, corresponding to the free end of the winding belt in its free state.

[0045] The gangway door retraction device provided by the present invention may also include the following feature:

[0046] A buffer element, located on the side where the second connecting component is situated, and retractably connected between the gangway door and the door frame, is used to output resistance in the opposite direction of rotation during the opening of the gangway door and to output assistance in the same direction of rotation during its closing.

[0047] The buffer is a gas spring, with one end of the gas spring hinged to the gangway door and the other end hinged to the door frame.

[0048] This invention provides a gangway door assembly, characterized by comprising:

[0049] Door frame;

[0050] The gangway door is hinged to the door frame;

[0051] The gangway door lock is installed on the gangway door and the door frame; and

[0052] gangway door retraction device,

[0053] The gangway door retraction device is the gangway door retraction device as described above.

[0054] Therefore, the present invention has the following advantages compared with the prior art:

[0055] According to the present invention, the gangway door retraction device and gangway door assembly include a door frame, a gangway door, a gangway door lock, and a gangway door retraction device. The gangway door retraction device includes a closing operation mechanism and a connecting mechanism. The connecting mechanism includes a first connecting component and a second connecting component. The first connecting component includes a handrail and a first pulling component. The handrail has a fixed part and a movable part. The second connecting component has a second pulling component. When it is necessary to open the gangway door, the gangway door lock is first unlocked, and then a pushing force is applied to the gangway door in the engine room to make it rotate outward and open to a certain position. Then, the gangway door continues to rotate and open under its own weight until it is opened to the designated position. During the opening process, the fixed part of the handrail rotates around its hinge point with the door frame, and the movable part of the handrail extends outward relative to the fixed part. At the same time, the first pulling component and the second pulling component gradually unfold, thereby causing the first connecting component and the second connecting component in the connecting mechanism to gradually unfold, thereby realizing the opening operation of the gangway door.

[0056] When it is necessary to close the gangway door, operate the closing mechanism to pull the gangway door to rotate and close it until it is closed to the designated position. After closing, it is locked by the action of the gangway door lock. During the closing process, the fixed part of the handrail rotates around its hinge point with the door frame, and the movable part of the handrail retracts inward relative to the fixed part. At the same time, the first pulling part and the second pulling part gradually retract, thereby causing the first connecting part and the second connecting part in the connecting mechanism to gradually retract, thus realizing the closing operation of the gangway door.

[0057] By setting up the handrail part and the first tension part in the first connecting component and the second tension part in the second connecting component, more installation space can be freed up on both sides of the gangway door in the width direction, which is more conducive to the setting of other structures, thus making the gangway door retraction device more adaptable to small gangway doors. Attached Figure Description

[0058] Figure 1 This is a three-dimensional structural schematic diagram of the gangway door assembly in an embodiment of the present invention;

[0059] Figure 2 This is a three-dimensional structural diagram of the gangway door in its open position in an embodiment of the present invention;

[0060] Figure 3 This is a three-dimensional structural diagram of the gangway door in its closed position in an embodiment of the present invention;

[0061] Figure 4 This is a three-dimensional structural diagram of the armrest portion in the first direction in an embodiment of the present invention;

[0062] Figure 5 This is a three-dimensional structural diagram of the armrest portion in the second direction in an embodiment of the present invention;

[0063] Figure 6 This is a three-dimensional structural diagram of the first connecting part in an embodiment of the present invention;

[0064] Figure 7 This is a three-dimensional structural diagram of the second connecting part in an embodiment of the present invention;

[0065] Figure 8 This is a three-dimensional structural diagram of the door closing mechanism in an embodiment of the present invention.

[0066] The markings in the attached diagram are described below:

[0067] gangway door assembly 100; door frame 10; gangway door 20; hinge seat 21; connecting seat 22; card seat 23; card slot 24; gangway door retraction device 100a;

[0068] 30; door closing mechanism; 31; winding drum; 32; adhesive fixing structure;

[0069] Connecting mechanism 40; first connecting component 41; handrail portion 411; fixed portion 411a; moving groove 112b; movable portion 411b; protrusion 111b; first tension portion 412; connector 412a; pull rod 412b; first pull rod 121b; second pull rod 122b; second connecting component 42; second tension portion 421; rigid rod 421a; flexible rod 421b;

[0070] Buffer 50. Detailed Implementation

[0071] To make the technical means, creative features, objectives and effects of the present invention easy to understand, the following describes in detail the gangway door retraction device and gangway door assembly of the present invention with reference to embodiments and accompanying drawings.

[0072] This embodiment provides a gangway door retraction device and gangway door assembly that can free up more installation space and are more adaptable to small gangway doors.

[0073] Figure 1 This is a three-dimensional structural schematic diagram of the gangway door assembly in an embodiment of the present invention.

[0074] like Figure 1 As shown, the gangway door assembly 100 of this embodiment includes a door frame 10, a gangway door 20, a gangway door lock (not shown in the figure), and a gangway door retraction device 100a. The gangway door 20 is hinged to the door frame 10. The gangway door lock is provided on both the gangway door 20 and the door frame 10. The gangway door retraction device 100a is installed on the gangway door 20 and its door frame 10 to enable the opening and closing of the gangway door 20.

[0075] Figure 2 This is a three-dimensional structural diagram of the gangway door in its open position in an embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the gangway door in its closed position in an embodiment of the present invention.

[0076] like Figures 2 to 3 As shown, the gangway door retraction device 100a includes a closing operation mechanism 30 and a connecting mechanism 40. The closing operation mechanism 30 is mounted on the gangway door 20 and is used by the crew to operate from inside the engine room to pull the gangway door 20 to rotate and close. The connecting mechanism 40 is retractably connected between the gangway door 20 and the door frame 10 and is used to control the opening or closing of the gangway door 20. The connecting mechanism 40 includes a first connecting part 41 and a second connecting part 42. The first connecting part 41 is connected between a first side portion of the gangway door 20 in the width direction and a corresponding portion of the door frame 10, and includes a handrail portion 411 and a first pulling part 412. The handrail portion 411 has a fixed portion 411a and a movable portion 411b. One end of the fixed portion 411a is hinged to the door frame 10, one end of the first pulling part 412 is indirectly or directly hinged to the movable portion 411b, and the other end of the first pulling part 412 is hinged to the gangway door 20. The second connecting member 42 is connected between the second side portion of the gangway door 20 in the width direction and the corresponding door frame 10 portion, and has a second tension portion 421. One end of the second tension portion 421 is hinged to the gangway door 20, and the other end is hinged to the door frame 10.

[0077] Understandably, when it is necessary to open the gangway door 20, the gangway door lock is first unlocked, and then a pushing force is applied to the gangway door 20 from inside the engine room to make it rotate outward and open to a certain position. Then, the gangway door 20 continues to rotate and open under its own weight until it is opened to the designated position. During this opening process, the fixed part 411a of the handrail 411 rotates around its hinge point with the door frame 10, and the movable part 411b of the handrail 411 extends outward relative to the fixed part 411a. At the same time, the first pulling part 412 and the second pulling part 421 gradually unfold, thereby causing the first connecting part 41 and the second connecting part 42 in the connecting mechanism 40 to gradually unfold, thus realizing the opening operation of the gangway door 20.

[0078] When it is necessary to close the gangway door 20, the closing mechanism 30 is operated to pull the gangway door 20 to rotate and close it until it is closed to the designated position. After closing, it is locked by the gangway door lock. During this closing process, the fixed part 411a of the handrail 411 rotates around its hinge point with the door frame 10, and the movable part 411b of the handrail 411 retracts inward relative to the fixed part 411a. At the same time, the first pulling part 412 and the second pulling part 421 gradually retract, thereby causing the first connecting part 41 and the second connecting part 42 in the connecting mechanism 40 to gradually retract, thus realizing the closing operation of the gangway door 20.

[0079] Furthermore, by providing the handrail portion 411 and the first tension portion 412 within the first connecting component 41 and the second tension portion 421 within the second connecting component 42, more installation space can be freed up on both sides of the gangway door 20 in the width direction, which is more conducive to the installation of other structures, thereby making the gangway door retraction device 100a more adaptable to small gangway doors.

[0080] Figure 4 This is a three-dimensional structural diagram of the armrest portion in the first direction in an embodiment of the present invention; Figure 5 This is a three-dimensional structural diagram of the armrest portion in the second direction in an embodiment of the present invention.

[0081] like Figures 4 to 5 As shown, both the fixed part 411a and the movable part 411b are sleeve components, with the movable part 411b movably fitted inside the fixed part 411a. The circumferential surface of the movable part 411b has an outwardly extending protrusion 111b, and the circumferential sidewall of the fixed part 411a has a moving groove 112b communicating with its interior and exterior, extending along the axial direction of the fixed part 411a. The protrusion 111b slides through the moving groove 112b and is indirectly or directly hinged to the end of the first tension part 412. When the gangway door 20 is in the open position, the protrusion 111b abuts against one sidewall in the extending direction of the moving groove 112b.

[0082] Understandably, when the protrusion 111b slides along the extension direction of the moving groove 112b, it can drive the movable part 411b to extend outward or retract inward relative to the fixed part 411a, thereby enabling the first pulling part 412 to gradually unfold or retract, thereby realizing the retraction and unfolding of the first connecting member 41, and enabling the first pulling part 412 to apply a pulling force to the gangway door 20 when it is in the open position, so that the first pulling part 412 can withstand the load when the gangway door 20 is in use.

[0083] In this embodiment, the movable groove 112b is a strip-shaped groove, the inner shape of which is adapted to the outer shape of the protrusion 111b, and the outer surface of the protrusion 111b is in sliding fit with the inner wall of the movable groove 112b.

[0084] like Figure 4 As shown, the free end of the fixed part 411a has an opening for the movable part 411b to pass through. When the gangway door 20 is in the open position, the movable part 411b extends a certain distance from this end.

[0085] Understandably, when the gangway door 20 is in the open position, the movable part 411b of the handrail 411 can extend outward a certain distance relative to the fixed part 411a, thereby extending the overall length of the handrail 411 so that it can perform the function of a handrail.

[0086] Figure 6 This is a three-dimensional structural diagram of the first connecting part in an embodiment of the present invention.

[0087] like Figure 6 As shown, the first tensioning part 412 includes a connector 412a and two sets of tie rods 412b. The connector 412a is fixed to the extension end of the protrusion 111b. One end of one set of tie rods 412b is hinged to the connector 412a, and the other end is hinged to a first position on the gangway door 20. One end of the other set of tie rods 412b is hinged to the connector 412a, and the other end is hinged to a second position on the gangway door 20. The first position and the second position are spaced a certain distance apart along the length of the gangway door 20.

[0088] Understandably, when the protrusion 111b slides along the extension direction of the moving groove 112b, it can drive the connector 412a to move synchronously, so that the two sets of tie rods 412b can rotate relative to the connector 412a and the gangway door 20 respectively, thereby realizing the retraction and unfolding of the first pulling part 412. In addition, the two sets of tie rods 412b can apply a stable pulling force to the gangway door 20 to ensure the stability of the gangway door 20 during use.

[0089] like Figure 6As shown, a set of tie rods 412b positioned relatively close to the free end of the gangway door 20 includes two spaced-apart first tie rods 121b. One end of each first tie rod 121b is hinged to a connector 412a, and the other end is hinged directly or indirectly to the gangway door 20. Another set of tie rods 412b includes a second tie rod 122b, one end of which is hinged to the connector 412a, and the other end to the gangway door 20. The two first tie rods 121b are located on opposite radial sides of the second tie rod 122b.

[0090] Understandably, the first pull rod 121b and the second pull rod 122b are able to rotate relative to the connector 412a and the gangway door 20, respectively, so as to realize the retraction and unfolding of the first pulling part 412. In addition, by setting the two first pull rods 121b on both sides of the second pull rod 122b, the stability of the structure of the first pulling part 412 can be guaranteed, thereby further ensuring the stability of the gangway door 20 during use.

[0091] In this embodiment, two hinge seats 21 are fixed on the gangway door 20. The two hinge seats 21 are spaced apart along the length of the gangway door 20. A set of the same-side ends of the two first pull rods 121b are hinged to one of the hinge seats 21 through a connecting seat 22. Specifically, the same-side ends of the two first pull rods 121b are fixedly connected to the connecting seat 22, and the connecting seat 22 is hinged to the hinge seat 21 through a hinge shaft. One end of the second pull rod 122b is hinged to the other hinge seat 21 through a hinge shaft.

[0092] Figure 7 This is a three-dimensional structural diagram of the second connecting part in an embodiment of the present invention.

[0093] like Figure 7 As shown, the second tensioning part 421 includes a rigid rod 421a and a flexible rod 421b rotatably connected at both ends. The other end of the rigid rod 421a is hinged to the gangway door 20, and the other end of the flexible rod 421b is hinged to the door frame 10.

[0094] Understandably, during the opening of the gangway door 20, the rigid rod 421a and the flexible rod 421b rotate around their connection point and gradually straighten to unfold. During the closing of the gangway door 20, the rigid rod 421a and the flexible rod 421b rotate around their connection point and gradually bend to retract. This achieves the retraction and unfolding of the second tension part 421, and enables the second tension part 421 to apply tension to the gangway door 20 when it is in the open position. This allows the second tension part 421 to cooperate with the first tension part 412 to jointly bear the load when the gangway door 20 is in use, thereby ensuring the stability of the gangway door 20 during use.

[0095] In this embodiment, the rigid rod 421a is a rigid rod, the flexible rod 421b is a steel wire rope, one end of the rigid rod 421a is fixed with a connecting shaft, and one end of the flexible rod 421b has a collar portion that is movably sleeved on the connecting shaft.

[0096] like Figure 7 As shown, a bracket 23 is fixed on the gangway door 20. The bracket 23 has a slot 24 with openings at the top and both sides laterally. The inner shape of the slot 24 is adapted to the outer shape of the rigid rod 421a. When the gangway door 20 is in the closed position, the rigid rod 421a is inserted into the slot 24.

[0097] Figure 8 This is a three-dimensional structural diagram of the door closing mechanism in an embodiment of the present invention.

[0098] like Figure 8 As shown, the door closing mechanism 30 is located on one side of the gangway door 20 in the width direction, and includes a winding drum 31, a winding belt 32, and a resilient reset member (not shown in the figure). The winding drum 31 is rotatably mounted on the side wall of the gangway door 20 corresponding to that side. The winding belt 32 is wound around the winding drum 31, with one end fixed to the winding drum 31 and the other free end forming an operating end for the crew to perform the door closing action. The resilient reset member is drivenly connected to the winding drum 31 and is used to drive the winding drum 31 to rotate back to its original position after the tension on the winding belt 32 is removed.

[0099] Understandably, when a door-closing operation is required, the crew applies force to the free end of the take-up belt 32 and pulls it outward, thereby causing the take-up drum 31 to rotate. When the take-up belt 32 on the take-up drum 31 is pulled to the bottom, the crew continues to apply force to pull the gangway door 20 upward and close it, thus realizing the door-closing operation of the gangway door 20. After the gangway door 20 is closed, the take-up belt 32 is released, and then the take-up drum 31 rotates back to its original position under the action of the reset member, so that the take-up belt 32 is rewound onto the take-up drum 31. The design of the take-up belt 32 makes it more convenient for the crew to perform the door-closing operation from inside the cabin.

[0100] In this embodiment, the elastic reset element is a torsion spring, which is used to make the winding drum 31 have a tendency to rotate back to its original position.

[0101] It should be noted that in other alternative embodiments, the door closing mechanism 30 may also be a rewinding structure similar to a measuring tape.

[0102] like Figure 8As shown, the closing mechanism 30 also includes an adhesive fixing structure 33, which is used to fix the free end of the take-up tape 32 to the side wall of the gangway door 20 when not in operation, and includes an adhesive part and an adhesive mating part. The adhesive part is provided at the free end of the take-up tape 32. The adhesive mating part is provided on the side wall of the gangway door 20 corresponding to the free end of the take-up tape 32 in the free state.

[0103] Understandably, the cooperation between the adhesive part and the adhesive mating part allows the free end of the take-up tape 32 to be fixed to the side wall of the gangway door 20 by adhesive when not in operation, which can prevent the free end of the take-up tape 32 from falling off and at the same time facilitate the crew to take it out for operation.

[0104] In this embodiment, the adhesive fixing structure 33 is a hook and loop fastener, the adhesive part is a hook surface, and the adhesive mating part is a rough surface.

[0105] like Figure 7 As shown, the gangway door retraction device 100a also includes a buffer 50, which is disposed on the side where the second connecting member 42 is located, and is retractably connected between the gangway door 20 and the door frame 10. The buffer 50 is used to output resistance opposite to the direction of rotation during the opening of the gangway door 20 and to output assistance in the same direction as the direction of rotation during its closing. The buffer 50 is a gas spring, with one end hinged to the gangway door 20 and the other end hinged to the door frame 10.

[0106] Understandably, during the opening of the gangway door 20, the gangway door 20 gradually compresses the buffer member 50. During the compression process, the buffer member 50 outputs resistance to reduce the rotation speed of the gangway door 20. During the closing process of the gangway door 20, the buffer member 50 gradually extends. During the extension process, the buffer member 50 outputs assistance to reduce the operating force for closing the door.

[0107] The role and effect of the embodiments

[0108] According to the gangway door retraction device and gangway door assembly involved in this embodiment, the gangway door assembly includes a door frame, a gangway door, a gangway door lock, and a gangway door retraction device. The gangway door retraction device includes a closing operation mechanism and a connecting mechanism. The connecting mechanism includes a first connecting component and a second connecting component. The first connecting component includes a handrail and a first pulling component. The handrail has a fixed part and a movable part. The second connecting component has a second pulling component. When it is necessary to open the gangway door, the gangway door lock is first unlocked, and then a pushing force is applied to the gangway door in the engine room to make it rotate outward and open to a certain position. Then, the gangway door continues to rotate and open under its own weight until it is opened to the designated position. During the opening process, the fixed part of the handrail rotates around its hinge point with the door frame, and the movable part of the handrail extends outward relative to the fixed part. At the same time, the first pulling component and the second pulling component gradually unfold, thereby making the first connecting component and the second connecting component in the connecting mechanism gradually unfold, so as to realize the opening operation of the gangway door.

[0109] When it is necessary to close the gangway door, operate the closing mechanism to pull the gangway door to rotate and close it until it is closed to the designated position. After closing, it is locked by the action of the gangway door lock. During the closing process, the fixed part of the handrail rotates around its hinge point with the door frame, and the movable part of the handrail retracts inward relative to the fixed part. At the same time, the first pulling part and the second pulling part gradually retract, thereby causing the first connecting part and the second connecting part in the connecting mechanism to gradually retract, thus realizing the closing operation of the gangway door.

[0110] By setting up the handrail part and the first tension part in the first connecting component and the second tension part in the second connecting component, more installation space can be freed up on both sides of the gangway door in the width direction, which is more conducive to the setting of other structures, thus making the gangway door retraction device more adaptable to small gangway doors.

[0111] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gangway door retraction device, for installation on a gangway door and its frame to enable the opening and closing of the gangway door, characterized in that, include: A door closing mechanism (30) is provided on the gangway door (20) for crew members to operate from inside the cabin to pull the gangway door (20) to rotate and close. as well as A connecting mechanism (40) is retractably connected between the gangway door (20) and the door frame (10) for controlling the opening or closing of the gangway door (20). The connecting mechanism (40) includes: A first connecting component (41) connects the first side portion of the gangway door (20) in the width direction to the corresponding door frame (10) portion, and includes a handrail portion (411) and a first tension portion (412). The handrail (411) has a fixed part (411a) and a movable part (411b). One end of the fixed part (411a) is hinged to the door frame (10). One end of the first tension part (412) is indirectly or directly hinged to the movable part (411b), and the other end of the first tension part (412) is hinged to the gangway door (20). The second connecting member (42) connects the second side portion of the gangway door (20) in the width direction to the corresponding door frame (10) portion, and has a second tension portion (421). One end of the second tension part (421) is hinged to the gangway door (20), and the other end is hinged to the door frame (10); Both the fixed part (411a) and the movable part (411b) are sleeve components, and the movable part (411b) is movably fitted inside the fixed part (411a). The movable part (411b) has an outwardly extending protrusion (111b) on its circumferential surface, and the fixed part (411a) has a movable groove (112b) on its circumferential sidewall that communicates with its interior and exterior. The movable groove (112b) extends along the axial direction of the fixed part (411a). The protrusion (111b) slides through the moving groove (112b) and is indirectly or directly hinged to the end of the first tension part (412). When the gangway door (20) is in the open position, the protrusion (111b) abuts against one side wall of the moving groove (112b) in the extending direction; The free end of the fixed part (411a) has an opening for the movable part (411b) to pass through. When the gangway door (20) is in the open position, the movable part (411b) extends a certain distance from that end; The first tension part (412) includes: A connector (412a) is fixed to the extension end of the protrusion (111b); and Two sets of tie rods (412b), One end of one set of the tie rods (412b) is hinged to the connector (412a), and the other end is hinged to a first position on the gangway door (20). One end of the other set of tie rods (412b) is hinged to the connector (412a), and the other end is hinged to a second position on the gangway door (20). The first position and the second position are spaced a certain distance apart along the length of the gangway door (20); A set of tie rods (412b) located relatively close to the free end of the gangway door (20) includes two spaced first tie rods (121b), one end of which is hinged to the connector (412a), and the other end is indirectly or directly hinged to the gangway door (20). Another set of the tie rods (412b) includes a second tie rod (122b), one end of which is hinged to the connector (412a) and the other end of which is hinged to the gangway door (20); The two first tie rods (121b) are located on opposite sides of the second tie rod (122b) in a radial direction.

2. The gangway door retraction device according to claim 1, characterized in that: in, The second tension part (421) includes a rigid rod (421a) and a flexible rod (421b) rotatably connected at their ends. The other end of the rigid member (421a) is hinged to the gangway door (20), and the other end of the flexible member (421b) is hinged to the door frame (10).

3. The gangway door retraction device according to claim 1, Its features are: The door closing mechanism (30) is located on one side of the gangway door (20) in the width direction, and includes: A winding drum (31) is rotatably mounted on the side wall of the gangway door (20) corresponding to that side. A take-up belt (32) is wound around the take-up drum (31), with one end fixed to the take-up drum (31) and the other free end forming an operating end for the crew to perform the door closing action; and An elastic reset member is driven to the take-up drum (31) and is used to drive the take-up drum (31) to rotate back to its original position after the tension on the take-up belt (32) is removed.

4. The gangway door retraction device according to claim 3, Its features are: The closing mechanism (30) further includes an adhesive fixing structure (33) for fixing the free end of the winding tape (32) to the side wall of the gangway door (20) when not in operation, and includes: An adhesive portion is provided at the free end of the take-up tape (32); and An adhesive mating part is provided on the side wall of the gangway door (20) corresponding to the free end of the winding belt (32) in its free state.

5. The gangway door retraction device according to claim 1, characterized in that, Also includes: A buffer (50) is disposed on the side where the second connecting component (42) is located, and is retractably connected between the gangway door (20) and the door frame (10). It is used to output resistance opposite to the direction of rotation during the opening of the gangway door (20) and to output resistance in the same direction as the direction of rotation during its closing. The buffer (50) is a gas spring, one end of which is hinged to the gangway door (20) and the other end is hinged to the door frame (10).

6. A gangway door assembly, characterized in that, include: Door frame (10); The gangway door (20) is hinged to the door frame (10); A gangway door lock is provided on the gangway door (20) and the door frame (10); and gangway door retraction device (100a), The gangway door retraction device (100a) is the gangway door retraction device according to any one of claims 1-5.

Images