Boarding gate lifting and door lock movement coordinated linkage mechanism
By optimizing the transmission structure of the coordinated linkage mechanism between the boarding door lifting and door lock motion, and adopting a series double rocker and crank rocker mechanism, the problem of motion coordination between the boarding door lifting and door lock mechanisms is solved, and the lock hook can be quickly unhooked and the lifting action can be non-interference, which simplifies the control structure and reduces costs.
Patent Information
- Application Number
- CN202510852372.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-24
- Publication Date
- 2025-09-12
AI Technical Summary
The existing boarding door lifting mechanism and door locking mechanism have poor motion coordination and are prone to interference.
Two sets of double rocker mechanisms connected in series, one set of crank rocker mechanism and a third set of double rocker mechanism are used to optimize the initial position of the transmission mechanism, so that the lock hook can be quickly unhooked in the initial stage of door lifting, reducing the risk of interference between the unlocking action and the lifting action.
The invention realizes that the rotation angle of the lock hook is large and the rotation angle of the lifting mechanism is small in the initial stage of the boarding door lifting, thereby avoiding motion interference, simplifying the control structure and reducing costs.
Smart Images
Figure CN120626005A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of boarding door mechanism design, and in particular to a coordinated linkage mechanism for boarding door lifting and door lock movement. Background Art
[0002] A boarding door is a blocking type door. Its lifting mechanism functions to lift the door to a specific position, using a fixed or nearly fixed point as a fulcrum, along a predetermined lifting trajectory, ensuring that the door's stopper completely clears the fuselage's stopper. There are two ways to achieve this: lifting via a latch mechanism or using a hinge arm. The former utilizes the relative motion between the latch rocker arm and the latch slot in the door frame to achieve lifting, while the latter utilizes the door's lifting mechanism and its transmission mechanism, using the hinge arm as a fulcrum, to achieve lifting.
[0003] The boarding door latch is the mechanical device that holds the door closed and withstands applied loads, while the lock prevents the latch from accidentally disengaging. When opening the door, the latch cannot be released without unlocking it; when closing the door, the latch cannot be locked without being in place. Because both the lifting mechanism and the door lock are driven by the internal handle, regardless of the lifting method, the door must be fully unlocked before it is raised into position. Otherwise, motion interference will occur. Therefore, the design of the lifting and door lock mechanisms must consider the kinematic coordination between the mechanisms.
[0004] Therefore, it is urgent to design a transmission mechanism from the inner handle shaft to the lifting mechanism and from the inner handle shaft to the door lock mechanism to effectively achieve the motion coordination between the lifting mechanism and the door lock mechanism. Summary of the Invention
[0005] The main purpose of this application is to provide a coordinated linkage mechanism for boarding door lifting and door locking movements, aiming to solve the technical problems of poor movement coordination and easy interference between the existing lifting mechanism and door locking mechanism.
[0006] To achieve the above-mentioned objectives, the present application provides a coordinated linkage mechanism for boarding door lifting and door lock movement, including an inner handle shaft, the inner handle shaft is fixedly connected to a first double rocker mechanism, the other end of the first double rocker mechanism is fixedly connected to a second double rocker mechanism, the other end of the second double rocker mechanism is fixedly connected to a lifting mechanism, the inner handle shaft is also fixedly connected to a crank rocker mechanism, the other end of the crank rocker mechanism is fixedly connected to a third double rocker mechanism, and the other end of the third double rocker mechanism is fixedly connected to a lock hook; wherein, the axis center line of the input section of the first double rocker mechanism in the initial position is close to the axis center line of its corresponding connecting section; the initial position of the input section of the second double rocker mechanism is close to the axis center line of its corresponding connecting section; the initial position of the input section of the crank rocker mechanism is close to the axis center line of its corresponding connecting section; the initial position of the input section of the third double rocker mechanism is close to the axis center line of its corresponding connecting section.
[0007] Optionally, the axis line of the input segment of the first double rocker mechanism in the initial position deviates from the axis line of its corresponding connecting segment in the clockwise direction by 1°~3°; the axis line of the input segment of the second double rocker mechanism in the initial position deviates from the axis line of its corresponding connecting segment in the clockwise direction by 1°~3°; the axis line of the input segment of the crank rocker mechanism in the initial position deviates from the axis line of its corresponding connecting segment in the counterclockwise direction by 1°~3°; the axis line of the input segment of the third double rocker mechanism in the initial position deviates from the axis line of its corresponding connecting segment in the counterclockwise direction by 1°~3°.
[0008] Optionally, the first double rocker mechanism includes a first input rocker fixedly connected to the inner handle shaft, one end of the first input rocker is hinged to a first fulcrum, the other end of the first input rocker is hinged to a first connecting rod, the first connecting rod is hinged to a second connecting rod, and the second connecting rod is hinged to a first output rocker; wherein, the axis of the first input rocker in the initial position deviates by 1°~3° clockwise relative to the axis of the first connecting rod.
[0009] Optionally, the second double rocker mechanism includes a second input rocker fixedly connected to the first output rocker, the second input rocker and the first output rocker are hinged at the second fulcrum at the same time, the other end of the second input rocker is hinged to a third connecting rod, the third connecting rod is hinged to a fourth connecting rod, and the fourth connecting rod is hinged to the second output rocker; wherein, the axis of the second input rocker in the initial position deviates from the axis of the third connecting rod in the clockwise direction by 1°~3°, and when the second input rocker is in the initial position, the first output rocker is in the extreme position.
[0010] Optionally, the lifting mechanism includes a lower lifting arm fixedly connected to the second output rocker, the lower lifting arm and the second output rocker are simultaneously hinged at a third fulcrum, the other end of the lower lifting arm is hinged to a connecting arm, the connecting arm is hinged to an upper lifting arm, and the other end of the upper lifting arm is hinged to a fourth fulcrum; wherein, when the lower lifting arm is in the initial position, the second output rocker is in the extreme position.
[0011] Optionally, the crank rocker mechanism includes a third input rocker fixedly connected to the inner handle shaft, one end of the third input rocker is hinged to the first fulcrum, the other end of the third input rocker is hinged to the fifth connecting rod, the fifth connecting rod is hinged to the sixth connecting rod, and the sixth connecting rod is hinged to the third output rocker; wherein, the axis of the third input rocker in the initial position deviates from the axis of the fifth connecting rod in the counterclockwise direction by 1°~3°, and when the third input rocker is in the initial position, the third output rocker is in the extreme position.
[0012] Optionally, the third double rocker mechanism includes a fourth input rocker fixedly connected to the third output rocker, the fourth input rocker and the third output rocker are simultaneously hinged at a fifth fulcrum, the other end of the fourth input rocker is hinged to a seventh connecting rod, the seventh connecting rod is hinged to an eighth connecting rod, the eighth connecting rod is hinged to the fourth output rocker, and the fourth output rocker is fixedly connected to the lock hook; wherein, the axis of the fourth input rocker in the initial position deviates by 1°~3° counterclockwise relative to the axis of the seventh connecting rod.
[0013] Optionally, during the unlocking process, the lowering height of the lock hook h , Rotation radius of the lock hook l and gate lift height H The relationship is as follows:
[0014] Where, δ is the initial position parameter of the lock hook, λ For the lock hook corner.
[0015] The beneficial effects that can be achieved by this application are as follows: The present application adopts two sets of double rocker mechanisms connected in series between the inner handle shaft and the lifting mechanism, namely the first double rocker mechanism and the second double rocker mechanism, and the axis line of the initial position of the input section (i.e. the starting position of rotation) of each double rocker mechanism is close to the axis line of its corresponding connecting section, so that the lifting height of the cabin door in the initial stage of lifting is extremely small; at the same time, a set of crank rocker mechanisms and a set of third double rocker mechanisms are respectively adopted from bottom to top from the inner handle shaft to the lock hook, and the initial positions of the input sections of the crank rocker mechanism and the third double rocker mechanism (i.e. the starting position of rotation) are both close to the axis line of their corresponding connecting sections, so that when the inner handle shaft rotates a small angle in the initial stage of cabin door lifting, the rotation angle of the lock hook is large, and the lock hook can be quickly unhooked. Therefore, the present application optimizes the arrangement of the initial positions of the four transmission mechanisms, namely the first double rocker mechanism, the second double rocker mechanism, the crank rocker mechanism and the third double rocker mechanism, so that the rotation angle of the lock hook is larger and the rotation angle of the lifting mechanism is smaller in the initial stage of the boarding door lifting. That is, the lock hook can be unhooked when the cabin door is lifted to a very small height, reducing the risk of interference between the unlocking action and the lifting action of the boarding door, and the motion coordination of the lifting mechanism and the door locking mechanism can be achieved without designing a special time-sharing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] To more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following briefly describes the drawings required for the specific embodiments or the description of the prior art. Similar elements or parts are generally identified by similar reference numerals throughout the drawings. Elements or parts in the drawings are not necessarily drawn to scale.
[0017] Figure 1Schematic diagram of the connection structure between the inner handle shaft and the lifting mechanism in an embodiment of the present application (the solid line portion in the figure represents the initial position, and the dotted line portion represents the final position); Figure 2 Schematic diagram of the connection structure between the inner handle shaft and the lock hook in an embodiment of the present application (the solid line portion in the figure represents the initial position, and the dotted line portion represents the final position); Figure 3 Schematic diagram of the parameters of the door lock mechanism (i.e., lock hook movement) in an embodiment of the present application.
[0018] Reference numerals: 110 - inner handle shaft, 120 - first double rocker mechanism, 130 - second double rocker mechanism, 140 - lifting mechanism, 150 - crank rocker mechanism, 160 - third double rocker mechanism, 170 - lock hook.
[0019] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0021] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0022] In this application, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; it can mean mechanical connection or electrical connection; it can mean direct connection or indirect connection through an intermediate medium; it can mean internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0023] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.
[0024] Example Reference Figure 1-Figure 3 This embodiment provides a coordinated linkage mechanism for boarding door lifting and door locking, including an inner handle shaft 110, to which a first double rocker mechanism 120 is fixedly connected. The other end of the first double rocker mechanism 120 is fixedly connected to a second double rocker mechanism 130, and the other end of the second double rocker mechanism 130 is fixedly connected to a lifting mechanism 140. The inner handle shaft 110 is also fixedly connected to a crank rocker mechanism 150, and the other end of the crank rocker mechanism 150 is fixedly connected to a third double rocker mechanism 160, and the other end of the third double rocker mechanism 160 is fixedly connected to a lock hook 170. The axis centerline of the input section of the first double rocker mechanism 120 in an initial position is close to the axis centerline of its corresponding connecting section; the initial position of the input section of the second double rocker mechanism 130 is close to the axis centerline of its corresponding connecting section; the initial position of the input section of the crank rocker mechanism 150 is close to the axis centerline of its corresponding connecting section; and the initial position of the input section of the third double rocker mechanism 160 is close to the axis centerline of its corresponding connecting section.
[0025] Since the time-sharing mechanism is currently used to control the action sequence of the lifting mechanism and the door lock mechanism, it is necessary to design a special cam profile or groove wheel, but the structure is complex and the cost is high.
[0026] Therefore, in this embodiment, the rotation of the inner handle shaft 110 relative to the boarding door is used as the input motion, and the boarding door is lifted through the transmission mechanism and the lifting mechanism 140. For the convenience of design, according to the principle of relative motion invariance of the lower sub-mechanism, the boarding door is fixed, and what is ultimately achieved is the descent of the hinge arm. Therefore, two sets of double rocker mechanisms connected in series are used between the inner handle shaft 110 and the lifting mechanism 140, namely the first double rocker mechanism 120 and the second double rocker mechanism 130, and the axis line of the initial position of the input section (i.e. the starting position of rotation) of each double rocker mechanism is close to the axis line of its corresponding connecting section, so that the lifting height of the cabin door in the initial stage of lifting is extremely small; at the same time, a set of crank rocker mechanisms 150 and a set of third double rocker mechanisms 160 are respectively used from bottom to top from the inner handle shaft 110 to the lock hook 170 (the lock hook 170 is the core moving component of the door lock mechanism), and the initial positions of the input sections of the crank rocker mechanism 150 and the third double rocker mechanism 160 are both close to the axis line of their corresponding connecting sections, so that when the inner handle shaft 110 rotates a small angle in the initial stage of cabin door lifting, the rotation angle of the lock hook 170 is large, and the lock hook 170 can be quickly unhooked. Therefore, in this embodiment, by optimizing the initial positions of the four transmission mechanisms, namely the first double rocker mechanism 120, the second double rocker mechanism 130, the crank rocker mechanism 150 and the third double rocker mechanism 160, the rotation angle of the lock hook 170 is larger and the rotation angle of the lifting mechanism 140 is smaller in the initial stage of the boarding door lifting. That is, the lock hook 170 can be unhooked when the cabin door is lifted to a very small height, thereby reducing the risk of interference between the unlocking action and the lifting action of the boarding door. In addition, the motion coordination of the lifting mechanism 140 and the door locking mechanism can be achieved without designing a special time-sharing mechanism, thereby simplifying the control structure and reducing costs.
[0027] As an optional embodiment, the axis line of the input segment of the first double rocker mechanism 120 at the initial position deviates from the axis line of its corresponding connecting segment in the clockwise direction by 1°~3°; the axis line of the input segment of the second double rocker mechanism 130 at the initial position deviates from the axis line of its corresponding connecting segment in the clockwise direction by 1°~3°; the axis line of the input segment of the crank rocker mechanism 150 at the initial position deviates from the axis line of its corresponding connecting segment in the counterclockwise direction by 1°~3°; the axis line of the input segment of the third double rocker mechanism 160 at the initial position deviates from the axis line of its corresponding connecting segment in the counterclockwise direction by 1°~3°.
[0028] In this embodiment, the axis lines of the input sections of the first double rocker mechanism 120 and the second double rocker mechanism 130 at the initial positions deviate from the axis lines of their corresponding connecting sections in a clockwise direction by 1°~3°. At the same time, the axis lines of the input sections of the crank rocker mechanism 150 and the third double rocker mechanism 160 at the initial positions deviate from the axis lines of their corresponding connecting sections in a counterclockwise direction by 1°~3°. According to tests, the deviation angles designed above can effectively ensure that when the handle shaft 110 rotates a small angle in the initial stage of door lifting, the rotation angle of the lock hook 170 is large, thereby ensuring the movement coordination between the lifting mechanism 140 and the door lock mechanism.
[0029] As an optional embodiment, the first double rocker mechanism 120 includes a first input rocker fixedly connected to the inner handle shaft 110, one end of the first input rocker being hinged to a first fulcrum, the other end of the first input rocker being hinged to a first connecting rod, the first connecting rod being hinged to a second connecting rod, and the second connecting rod being hinged to a first output rocker; wherein, in an initial position, the axis of the first input rocker deviates clockwise by 1° to 3° relative to the axis of the first connecting rod. The second double rocker mechanism 130 includes a second input rocker fixedly connected to the first output rocker, the second input rocker and the first output rocker being hinged to a second fulcrum, the other end of the second input rocker being hinged to a third connecting rod, the third connecting rod being hinged to a fourth connecting rod, and the fourth connecting rod being hinged to the second output rocker; wherein, in an initial position, the axis of the second input rocker deviates clockwise by 1° to 3° relative to the axis of the third connecting rod, and when the second input rocker is in the initial position, the first output rocker is in an extreme position. The lifting mechanism 140 includes a lower lifting arm fixedly connected to the second output rocker, the lower lifting arm and the second output rocker are hinged at the third fulcrum at the same time, the other end of the lower lifting arm is hinged to a connecting arm, the connecting arm is hinged to an upper lifting arm, and the other end of the upper lifting arm is hinged to a fourth fulcrum; wherein, when the lower lifting arm is in the initial position, the second output rocker is in the extreme position.
[0030] In this embodiment, the second double rocker mechanism 130 (ie Figure 1 The second output rocker (DE segment) of the GFED segment) and the lifting mechanism 140 (ie Figure 1 The lower lifting arm (DC segment) in the DCBA segment is fixed. According to the rotation range of the lower lifting arm (DC segment) during the boarding gate lifting process, the second double rocker mechanism 130 can be designed so that the initial position of the lower lifting arm (DC segment) corresponds to the extreme position of the second output rocker (DE segment) (i.e., the GF segment and the FE segment are close to collinear). When the lower lifting arm (DC segment) rotates to its final position, the second double rocker mechanism 130 has not yet reached its dead point position (i.e., the FE segment and the ED segment are not collinear). The first double rocker mechanism 120 (i.e. Figure 1The first input rocker (JI segment) of the inner handle shaft 110 (JIHG segment) is fixed to the inner handle shaft 110, and the first output rocker (GH segment) of the first double rocker mechanism 120 is fixed to the second input rocker (GF segment) of the second double rocker mechanism 130. Based on the rotation range of the second input rocker (GF segment), the first double rocker mechanism 120 can be designed so that the initial position of the second input rocker (GF segment) corresponds to the extreme position of the first output rocker (GH segment) (i.e., the JI segment and the IH segment are nearly collinear). When the second input rocker (GF segment) reaches its final position, the first double rocker mechanism 120 has not yet reached its dead center position (i.e., the IH segment and the HG segment are not collinear). This ensures that the initial lift height of the hatch door is minimal during the transmission process from the inner handle shaft 110 to the lifting mechanism 140.
[0031] As an optional embodiment, the crank rocker mechanism 150 includes a third input rocker fixedly connected to the inner handle shaft 110, one end of the third input rocker is hinged to the first fulcrum, the other end of the third input rocker is hinged to the fifth connecting rod, the fifth connecting rod is hinged to the sixth connecting rod, and the sixth connecting rod is hinged to the third output rocker; wherein, the axis of the third input rocker in the initial position deviates from the axis of the fifth connecting rod in the counterclockwise direction by 1°~3°, and when the third input rocker is in the initial position, the third output rocker is in the extreme position. The third double rocker mechanism 160 includes a fourth input rocker fixedly connected to the third output rocker. The fourth input rocker and the third output rocker are both hinged at a fifth fulcrum. The other end of the fourth input rocker is hinged to a seventh connecting rod, which is hinged to an eighth connecting rod, which is hinged to the fourth output rocker. The fourth output rocker is fixedly connected to the locking hook 170. In the initial position, the axis of the fourth input rocker deviates by 1° to 3° counterclockwise relative to the axis of the seventh connecting rod.
[0032] In this embodiment, the third double rocker mechanism 160 (ie Figure 2 The fourth output rocker (PQ segment) of the NOPQ segment is fixed to the lock hook 170. The third double rocker mechanism 160 can be designed according to the rotation angle of the lock hook 170, so that the initial rotation position of the fourth output rocker (PQ segment) is its extreme position (i.e., the NO segment and the OP segment are close to collinear). When the fourth output rocker (PQ segment) rotates to its final position, the third double rocker mechanism 160 has not yet reached its dead point position (i.e., the PQ segment and the OP segment are not collinear). Figure 2The third input rocker (LJ segment) of the inner handle shaft (NMLJ segment) is a crank fixed to the inner handle shaft 110. The third output rocker (NM segment) of the crank rocker mechanism 150 is fixed to the fourth input rocker (NO segment). Based on the rotation angles of the inner handle and the fourth input rocker (NO segment), the crank rocker mechanism 150 can be designed so that the initial rotation position of the third input rocker (LJ segment) corresponds to the extreme position of the third output rocker (NM segment) (i.e., the ML segment and LJ segment are nearly collinear). When the third input rocker (LJ segment) reaches its final rotation position, the rotation angle of the third input rocker (LJ segment) is the same as the rotation angle of the inner handle shaft 110, and the rotation angle of the third output rocker (NM segment) is the same as the rotation angle of the fourth input rocker (NO segment). Furthermore, to maximize the rotation angle of the lock hook 170 during the initial lifting phase, the length of the third input rocker (LJ segment) is similar to that of the third output rocker (NM segment).
[0033] As an optional embodiment, during the unlocking process, the lowering height of the lock hook 170 h , the rotation radius of the lock hook 170 l and gate lift height H The relationship is as follows:
[0034] Where, δ is the initial position parameter of the locking hook 170, λ For the lock hook corner.
[0035] In this embodiment, the lock hook angle can be determined according to the above formula: λ , and combined with the rotation angle of the inner handle shaft 110 during the lifting process, the relevant structural parameters of the door lock mechanism and its transmission mechanism can be designed, which has good reference and guidance value.
[0036] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.
Claims
1. A coordinated linkage mechanism for boarding door lifting and door lock movement, characterized in that: The inner handle shaft comprises an inner handle shaft, the inner handle shaft is fixedly connected to a first double rocker mechanism, the other end of the first double rocker mechanism is fixedly connected to a second double rocker mechanism, the other end of the second double rocker mechanism is fixedly connected to a lifting mechanism, the inner handle shaft is also fixedly connected to a crank rocker mechanism, the other end of the crank rocker mechanism is fixedly connected to a third double rocker mechanism, the other end of the third double rocker mechanism is fixedly connected to a locking hook; wherein, The axis center line of the input segment of the first double rocker mechanism in the initial position is close to the axis center line of its corresponding connecting segment; The initial position of the input segment of the second double rocker mechanism is close to the axis of its corresponding connecting segment; The initial position of the input section of the crank-rocker mechanism is close to the axis of its corresponding connecting section; The initial position of the input section of the third double rocker mechanism is close to the axis center line of its corresponding connecting section.
2. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 1, characterized in that: The axis of the input segment of the first dual rocker mechanism in the initial position deviates 1° to 3° clockwise relative to the axis of its corresponding connecting segment; The axis of the input segment of the second dual rocker mechanism in the initial position deviates 1° to 3° clockwise relative to the axis of its corresponding connecting segment; The axis of the input section of the crank-rocker mechanism in the initial position deviates 1° to 3° counterclockwise relative to the axis of its corresponding connecting section; The axis of the input section of the third double rocker mechanism at the initial position deviates from the axis of the corresponding connecting section by 1° to 3° in the counterclockwise direction.
3. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 2, characterized in that: The first double rocker mechanism includes a first input rocker fixedly connected to the inner handle shaft, one end of the first input rocker is hinged to a first fulcrum, the other end of the first input rocker is hinged to a first connecting rod, the first connecting rod is hinged to a second connecting rod, and the second connecting rod is hinged to a first output rocker; wherein, the axis of the first input rocker in the initial position deviates by 1°~3° clockwise relative to the axis of the first connecting rod.
4. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 3, characterized in that: The second double rocker mechanism includes a second input rocker fixedly connected to the first output rocker, the second input rocker and the first output rocker are hinged at a second fulcrum at the same time, the other end of the second input rocker is hinged to a third connecting rod, the third connecting rod is hinged to a fourth connecting rod, and the fourth connecting rod is hinged to the second output rocker; wherein, the axis of the second input rocker in the initial position deviates by 1° to 3° clockwise relative to the axis of the third connecting rod, and when the second input rocker is in the initial position, the first output rocker is in the extreme position.
5. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 4, characterized in that: The lifting mechanism includes a lower lifting arm fixedly connected to the second output rocker, the lower lifting arm and the second output rocker are simultaneously hinged at a third fulcrum, the other end of the lower lifting arm is hinged to a connecting arm, the connecting arm is hinged to an upper lifting arm, and the other end of the upper lifting arm is hinged to a fourth fulcrum; wherein, when the lower lifting arm is in the initial position, the second output rocker is in the extreme position.
6. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 2, characterized in that: The crank rocker mechanism includes a third input rocker fixedly connected to the inner handle shaft, one end of the third input rocker is hinged to a first fulcrum, the other end of the third input rocker is hinged to a fifth connecting rod, the fifth connecting rod is hinged to a sixth connecting rod, and the sixth connecting rod is hinged to a third output rocker; wherein, the axis of the third input rocker in the initial position deviates by 1°~3° counterclockwise relative to the axis of the fifth connecting rod, and when the third input rocker is in the initial position, the third output rocker is in an extreme position.
7. The coordinated linkage mechanism for boarding door lifting and door locking according to claim 6, characterized in that: The third double rocker mechanism includes a fourth input rocker fixedly connected to the third output rocker, the fourth input rocker and the third output rocker are simultaneously hinged at a fifth fulcrum, the other end of the fourth input rocker is hinged to a seventh connecting rod, the seventh connecting rod is hinged to an eighth connecting rod, the eighth connecting rod is hinged to a fourth output rocker, and the fourth output rocker is fixedly connected to the locking hook; wherein, the axis of the fourth input rocker in the initial position deviates by 1° to 3° counterclockwise relative to the axis of the seventh connecting rod.
8. A coordinated linkage mechanism for boarding door lifting and door locking according to any one of claims 1 to 7, characterized in that: During the unlocking process, the lowering height of the lock hook h , the rotation radius of the locking hook l and gate lift height H The relationship is as follows: Where, δ is the initial position parameter of the lock hook, λ For the lock hook corner.