Boarding and alighting auxiliary device

Abstract

The utility model discloses a get-on and get-off auxiliary device which comprises a supporting base and a parking supporting plate. The driving device is arranged on the supporting seat; one end of the gangway foot plate is hinged to the first end of the parking supporting plate, so that the gangway foot plate can swing between the folding position and the using position, and when the gangway foot plate is located at the using position, the included angle between the upper surface of the gangway foot plate and the upper surface of the parking supporting plate is larger than 180 degrees and smaller than 270 degrees. When the parking device is used, the height of the parking supporting plate can be increased by utilizing the driving device, so that the height of the parking supporting plate is close to that of an entrance floor of a train carriage, and the height difference between the entrance floor and a station climbing platform is reduced. Due to the fact that the height of the parking supporting plate is close to the height of the entrance and exit floor of the train compartment, the wheelchair can be directly pushed to the parking supporting plate and pushed to the ground through the inclined face of the cab apron. The device can conveniently and quickly assist special crowds in getting on and off the train, and in case of emergency, the speed of evacuating from the carriage is increased, and the safety of passengers is ensured.

Description

[0001] This application claims priority to Chinese Patent Application No. 202411533339.8, filed on October 30, 2024, entitled "An Auxiliary Device for Getting On and Off a Vehicle," and Chinese Patent Application No. 202422637628.4, filed on October 30, 2024, entitled "An Auxiliary Device for Getting On and Off a Vehicle," the entire contents of which are incorporated herein by reference. Technical Field

[0002] This utility model relates to the field of rail vehicle technology, and more specifically, to an auxiliary device for getting on and off a train. Background Technology

[0003] Train platform boarding areas often have elevation differences, meaning there's a height difference between the platform floor and the train entrance / exit. For most passengers, this doesn't cause inconvenience when boarding or alighting. However, for people with disabilities, it can hinder wheelchair access. Especially in emergency situations where the train stops at locations other than the station, the entrance / exit floor becomes significantly higher than the temporary stopping area, further increasing the difficulty of wheelchair access.

[0004] Therefore, how to assist special groups in getting on and off the train when there is a height difference between the boarding positions, and improve the convenience of rail passenger vehicles, is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an auxiliary device for getting on and off the train, so as to assist special people in getting on and off the train when there is a height difference at the boarding position, thereby improving the convenience of rail passenger vehicles.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A vehicle boarding and alighting assistance device, comprising:

[0008] Support base and parking tray;

[0009] A drive device, mounted on the support base, is used to drive the parking tray to perform lifting and lowering actions;

[0010] A ramp is hinged at one end to the first end of the parking tray, allowing the ramp to swing between a folded position and a use position. When the ramp is in the use position, the angle between the upper surface of the ramp and the upper surface of the parking tray is greater than 180° and less than 270°.

[0011] Optionally, in the above-mentioned vehicle boarding and alighting assistance device, the driving device includes:

[0012] A scissor linkage mechanism, wherein one end of the scissor linkage mechanism is disposed on the support base and the other end is disposed on the parking tray;

[0013] A telescopic drive device, one end of which is disposed on the support base and the other end is connected to a link of the scissor linkage mechanism.

[0014] Optionally, in the above-mentioned vehicle boarding and alighting auxiliary device, the telescopic drive device is an electric push rod or a piston cylinder mechanism; and / or,

[0015] The scissor linkage mechanism comprises two components. The telescopic drive device is connected to the connecting rod of the scissor linkage mechanism via a connecting rod. The connecting rod is connected to the connecting rods of the two scissor linkage mechanisms at the same functional position. The telescopic drive device is connected to the connecting rod; and / or,

[0016] The support includes a base and leveling feet disposed at the bottom of the base.

[0017] Optionally, in the above-mentioned vehicle boarding and alighting auxiliary device, the ramp includes multiple sub-ramps, and any two adjacent sub-ramps are hinged together.

[0018] When the transition plate is in the folded position, each of the transition plates rotates until the plate surfaces are sequentially attached.

[0019] Optionally, in the above-mentioned vehicle boarding and alighting auxiliary device, the hinge connecting any two of the dividing plates includes:

[0020] A first hinge connecting plate is fixed to one of the dividing plates;

[0021] The second hinge connecting plate is fixed to another of the aforementioned dividing plates;

[0022] A hinge shaft is provided, wherein the first hinge connecting plate and the second hinge connecting plate are hinged together by the hinge shaft, one end of the hinge shaft has a limiting part to prevent the first hinge connecting plate and the second hinge connecting plate from disengaging from the hinge shaft, and the other end of the hinge shaft is a screw part;

[0023] The lock nut engages with the threaded part of the screw.

[0024] Optionally, in the above-mentioned vehicle boarding and alighting auxiliary device, when the ferries are in the use position, each of the ferries is located on the same plane;

[0025] The hinge connecting any two of the transition plates is a self-locking hinge, so that when the transition plate is in the use position, and when the upper surface of the transition plate is subjected to force, each of the transition plates cannot rotate.

[0026] Optionally, the above-mentioned vehicle loading and unloading auxiliary device further includes a limiting baffle, which is hinged to the second end of the parking tray, so that the limiting baffle can swing between a folded position and a use position. When the limiting baffle is in the use position, the angle between the upper surface of the limiting baffle and the upper surface of the parking tray is 160°~200°.

[0027] Optionally, in the above-mentioned vehicle boarding and alighting auxiliary device, the limiting baffle also includes a limiting position. When the limiting baffle is in the limiting position, the surface of the limiting baffle is perpendicular to the surface of the parking tray, and the limiting baffle is located above the parking tray.

[0028] When the limiting baffle is in the folded position, the limiting baffle is perpendicular to the parking tray and is located below the parking tray.

[0029] Optionally, the above-mentioned vehicle boarding and alighting assistance device also includes a handrail for holding the guardrail, which is disposed on the parking tray.

[0030] Optionally, in the above-mentioned vehicle boarding and alighting assistance device, there are two handrails, which are symmetrically arranged on both sides of the parking tray;

[0031] The handle is hinged to the parking tray, allowing it to swing between a folded position and a working position. When in the working position, the handle is perpendicular to the parking tray, and when in the folded position, it lies flat on the upper surface of the parking tray.

[0032] The boarding and alighting assistance device provided by this utility model can be placed on the boarding platform. The height of the parking tray is raised using a drive device, based on the height of the train car's entrance / exit floor, so that the height of the parking tray is close to the height of the train car's entrance / exit floor, thereby reducing the height difference between the entrance / exit floor and the boarding platform. Because the height of the parking tray is close to the height of the train car's entrance / exit floor, a wheelchair can be directly pushed onto the parking tray. If the end of the tray can touch the ground, the wheelchair can be pushed onto the ground via the ramp. If the parking tray is too high, preventing the end of the tray from touching the ground, the drive device is used to lower the height of the parking tray so that the end of the tray can touch the ground, facilitating the wheelchair to be pushed onto the ground via the ramp. The boarding and alighting assistance device provided by this utility model can reduce the impact of the height difference between the train car's entrance / exit floor and the boarding platform on boarding and alighting, providing convenient and quick assistance for people with disabilities to board and alight from trains. In emergencies, it increases the speed of evacuation from the train car and ensures passenger safety. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a front view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present utility model when it is in the raised position;

[0035] Figure 2 This is a side view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present utility model when it is in the raised position;

[0036] Figure 3 This is a top view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present utility model when it is in the raised position;

[0037] Figure 4 This is a front view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present utility model when it is in the ready position;

[0038] Figure 5 This is a front view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present invention when it is in the folded position;

[0039] Figure 6 This is a side view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present utility model when it is in the folded position;

[0040] Figure 7 This is a top view of the vehicle boarding and alighting assist device disclosed in this embodiment of the present invention when it is in the folded position.

[0041] The meanings of the various reference numerals in the figure are as follows:

[0042] 101-Base; 102-Leveling foot; 103-Scissor linkage mechanism; 104-Parking tray; 105-Limiting baffle; 106-Transfer plate; 1061-First transfer plate; 1062-Second transfer plate; 107-Handrail grip; 108-Telescopic drive device; 109-Gas spring. Detailed Implementation

[0043] The core of this utility model is to provide an auxiliary device for getting on and off the train, so as to assist special groups of people to get on and off the train when there is a height difference at the boarding position, thereby improving the convenience of rail passenger vehicles.

[0044] Hereinafter, embodiments will be described with reference to the accompanying drawings. Furthermore, the embodiments shown below do not limit the scope of the utility model as described in the claims. Additionally, the complete contents of the structures represented in the embodiments below are not limited to those necessary for the solution of the utility model as described in the claims. It should be noted that, for ease of description, only the parts relevant to the utility model are shown in the drawings. Unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0045] In the event of an emergency such as a fire, collision, or derailment on a train, passengers need to disembark quickly and evacuate to a safe area. Current technology typically uses escape ladders to assist passengers in evacuating through the windows. However, escape ladders only provide basic escape functionality for ordinary passengers and do not consider the use by people with disabilities.

[0046] To address the above problems, this utility model discloses an assistive device for getting on and off vehicles, which can be used by disabled persons with limited mobility, and has higher usability and applicability.

[0047] like Figures 1-4 As shown in the figure, the vehicle boarding and alighting assistance device disclosed in this embodiment of the utility model includes a support base, a parking tray 104, a drive device, and a ramp 106. Among them, the support base is the supporting component of the vehicle boarding and alighting assistance device. Considering the stability of the vehicle boarding and alighting assistance device during use, the support base should have a certain area to reliably support the entire vehicle boarding and alighting assistance device, as well as the weight of the wheelchair and disabled persons on the vehicle boarding and alighting assistance device.

[0048] The parking tray 104 is used to carry wheelchairs, passengers, and any luggage that passengers may carry. The parking tray 104 can be arranged parallel to the support base and remains parallel to the support base at all times during the raising and lowering of the parking tray 104.

[0049] The drive unit is mounted on the support base and is used to drive the parking tray 104 to perform lifting and lowering actions. The specific type of drive unit is not limited, as long as it can provide lifting and lowering power for the parking tray 104 and can adjust the height of the parking tray 104.

[0050] One end of the ramp 106 is hinged to the first end of the parking tray 104, allowing the ramp 106 to swing between a folded position and a used position. When the ramp 106 is in the used position, the angle between the upper surface of the ramp 106 and the upper surface of the parking tray 104 is greater than 180° and less than 270°, meaning the ramp 106 is tilted downwards from the parking tray 104 and connected to the ground. The folded position of the ramp 106 is the position where the ramp 106 occupies the smallest space, for example, it can be a position perpendicular to the parking tray 104 (e.g., Figures 5-7As shown in the figure, it can also be laid flat on the upper surface of the parking pallet 104. In this embodiment, the folding position of the ramp 106 is not limited, as long as it can occupy a small space and facilitate the storage of the vehicle loading and unloading auxiliary device when not in use.

[0051] When disembarking, passengers can raise the parking platform 104 to the same height as the floor at the train door. Then, passengers in wheelchairs can enter the parking platform 104 from its second end and transition to the ground via the ramp 106 to complete the disembarkation. It should be noted that when the floor at the train door is higher than the ground level, the boarding / alighting assistance device can also be used to board. Passengers in wheelchairs can climb onto the parking platform 104 via the inclined ramp 106 and enter the carriage from the second end of the parking platform 104.

[0052] The boarding and alighting auxiliary device provided by this utility model can be placed on the boarding platform (it should be noted that the boarding platform refers to the boarding and alighting position, not just the station platform, but also includes boarding and alighting positions outside the station in emergency situations). According to the height of the entrance and exit floor of the train car, the height of the parking tray 104 is raised by the drive device so that the height of the parking tray 104 is close to the height of the entrance and exit floor of the train car, thereby reducing the height difference between the entrance and exit floor and the boarding platform.

[0053] Since the height of the parking pallet 104 is close to the height of the entrance and exit floor of the train car, the wheelchair can be directly pushed onto the parking pallet 104. If the end of the ramp 106 can touch the ground, the wheelchair can be pushed onto the ground through the ramp 106.

[0054] If the parking pallet 104 is too high, preventing the end of the ramp 106 from touching the ground, a driving device is used to lower the height of the parking pallet 104, allowing the end of the ramp 106 to touch the ground, facilitating the wheelchair to be pushed onto the ground via the ramp 106's slope. The boarding and alighting assistance device disclosed in this embodiment of the invention can reduce the impact of the height difference between the train carriage entrance floor and the boarding platform on boarding and alighting, providing convenient and quick assistance for people with special needs to board and alight from trains. In emergencies, it increases the speed of evacuation from the carriage and ensures passenger safety.

[0055] In a specific embodiment of this utility model, the driving device may include a scissor-link mechanism 103 and a telescopic driving device. One end of the scissor-link mechanism 103 is disposed on a support base, and the other end is disposed on a parking tray 104. Specifically, the number of links can be set according to the lifting range; the greater the lifting range, the more links are required. For example... Figure 1 In the illustrated scheme, the scissor linkage mechanism 103 has two sets of linkage groups, each of which consists of two links.

[0056] The two links in each linkage group are arranged crosswise and hinged at the middle, with the ends of the links in the two linkage groups hinged together. The lower linkage group is mounted on a support base, for example, the end of one link (e.g., the first link) is hinged to the support base, and the end of the other link (e.g., the second link) is slidably fitted onto the support base; similarly, the upper linkage group is connected to the parking tray 104, for example, the end of one link (e.g., the third link) is hinged to the parking tray 104, and the end of the other link (e.g., the fourth link) is slidably fitted onto the parking tray 104. Based on this, the scissor linkage mechanism 103 can be deformed by driving the first link to swing, thereby achieving the lifting and lowering of the parking tray 104; the scissor linkage mechanism 103 can also be deformed by driving the end of the second link to slide, thereby achieving the lifting and lowering of the parking tray 104.

[0057] One end of the telescopic drive device 108 is mounted on the support base, and the other end is hinged to a link of the scissor linkage mechanism 103. The telescopic drive device 108 can be an electric push rod or a piston cylinder mechanism (such as a hydraulic cylinder or a pneumatic cylinder), that is, it generates a thrust on the link by outputting linear motion, causing the scissor linkage mechanism 103 to deform, thereby controlling the lifting and lowering of the parking pallet 104. The telescopic drive device 108 can be fixed on the support base, and its telescopic rod can be connected to the end of the second link; the telescopic drive device 108 can also be hinged on the support base, and its telescopic rod can be hinged to the end of the first link.

[0058] Furthermore, to ensure the smoothness of the lifting and lowering process of the parking pallet 104, a gas spring 109 can be added. One end of the gas spring 109 is hinged to the support base, and the other end is hinged to the first connecting rod. By utilizing the damping effect of the gas spring 109, the deformation speed of the scissor linkage mechanism 103 can be controlled, avoiding the danger caused by the large speed change of the parking pallet 104 due to the instantaneous movement when the telescopic drive device 108 starts to output power.

[0059] Furthermore, there can be two scissor linkage mechanisms 103 to ensure a more reliable support effect for the parking pallet 104. The telescopic drive device can be hinged to the connecting rod of the scissor linkage mechanism 103 via a connecting rod. The connecting rod is connected to the connecting rod of the same functional position of the two scissor linkage mechanisms 103 (for example, connected to the first connecting rod of the two scissor linkage mechanisms 103, or connected to the second connecting rod of the two scissor linkage mechanisms 103). The telescopic drive device is connected to the connecting rod, that is, the telescopic drive device can drive the scissor linkage mechanism 103 to deform by applying the pushing and pulling forces to the connecting rod, thereby controlling the lifting and lowering of the parking pallet 104.

[0060] In this embodiment, the support base includes a base 101 and leveling feet 102 disposed at the bottom of the base 101. A scissor linkage mechanism 103 and a telescopic drive device are disposed on the base 101. The leveling feet 102 can be disposed at the four corners of the base 101. By adjusting the height of the leveling feet 102, the entire vehicle entry / exit assist device can be kept level on uneven ground, enhancing the stability of the entire device. The base 101 can be manufactured by welding aluminum profiles to support the weight of the entire vehicle entry / exit assist device, wheelchair, and passenger.

[0061] like Figure 3 As shown, the transition plate 106 may include multiple sub-transition plates, with any two adjacent sub-transition plates hinged together. When the transition plate 106 is in the folded position, each sub-transition plate rotates until the plate surfaces are sequentially fitted together (e.g., ...). Figure 5 (As shown). In this embodiment, the transition plate 106 is divided into multiple hinged transition plates, so that when the transition plate 106 is in the folded position, the transition plate 106 occupies less space; while when the transition plate 106 is in the use position, the transition plate 106 can generate a larger usable area.

[0062] Furthermore, the hinge connecting any two transition plates includes a first hinge connecting plate, a second hinge connecting plate, a hinge shaft, and a locking nut. For ease of understanding, taking a transition plate 106 comprising two transition plates as an example, the two transition plates are the first transition plate 1061 and the second transition plate 1062.

[0063] The first hinge connecting plate is fixed to one of the transition plates, for example, to the first transition plate 1061, and the second hinge connecting plate is fixed to the other transition plate, for example, to the second transition plate 1062. The first and second hinge connecting plates are hinged together by a hinge shaft. One end of the hinge shaft has a limiting part to prevent the first and second hinge connecting plates from disengaging from the hinge shaft, and the other end of the hinge shaft is a screw part. A locking nut is threaded into the screw part. After the locking nut is tightened, the first and second hinge connecting plates are pressed together, thereby increasing the rotational resistance of the first and second hinge connecting plates; correspondingly, after the locking nut is loosened, the rotational resistance of the first and second hinge connecting plates is reduced.

[0064] When the transition plate 106 is in the working position, all the transition plates are located on the same plane. In this embodiment, taking two transition plates as an example, the first transition plate 1061 and the second transition plate 1062 can be rotated to be on the same plane, and then the locking nut is tightened, causing the first hinge connecting plate and the second hinge connecting plate to press together, keeping the first transition plate 1061 and the second transition plate 1062 on the same plane and able to bear a certain weight. To further increase the rotational resistance of the first hinge connecting plate and the second hinge connecting plate, friction teeth can be added to their mating surfaces. After the locking nut presses the first hinge connecting plate and the second hinge connecting plate together, the friction teeth mesh, increasing the rotational resistance and improving the load-bearing capacity.

[0065] Furthermore, the hinge connecting any two partition plates can also be designed as a self-locking hinge. The rotation range of a self-locking hinge is limited; for example, when partition plate 106 rotates from the folded position to the working position (i.e., all partition plates are on the same plane), the partition plates are limited by the self-locking hinge and cannot continue to rotate, thus remaining on the same plane. The limiting direction can be used to ensure that partition plate 106 is in the working position, and that when the upper surface of partition plate 106 is subjected to force, the partition plates cannot rotate, thus ensuring that partition plate 106 is in the working position and can bear a certain weight.

[0066] Since the boarding and alighting assistance device cannot be placed flush against the carriage, there will inevitably be a gap between the floor at the train door and the parking tray 104. If the gap is too large, it will affect the passage of wheelchairs. Based on this, in this embodiment, the boarding and alighting assistance device may also include a limiting baffle 105. The limiting baffle 105 is hinged to the second end of the parking tray 104, so that the limiting baffle 105 can swing between a folded position and a used position. When the limiting baffle 105 is in the used position, the angle between the upper surface of the limiting baffle 105 and the upper surface of the parking tray 104 is 160°~200°.

[0067] In this embodiment, when using the boarding / alighting assistance device to help passengers disembark, the device can be positioned at the carriage door. Even if there is a gap between the train door floor and the parking tray 104, the gap can be covered by the limiting baffle 105. Specifically, the limiting baffle 105 can be swung to the usage position, allowing it to rest on the train door floor for easy wheelchair access.

[0068] When the limiting baffle 105 overlaps the floor at the train door, if the height of the parking pallet 104 is lower than the floor at the train door, the angle between the upper surface of the limiting baffle 105 and the upper surface of the parking pallet 104 will be less than 180°; if the height of the parking pallet 104 is higher than the floor at the train door, the angle between the upper surface of the limiting baffle 105 and the upper surface of the parking pallet 104 will be greater than 180°; if the height of the parking pallet 104 is equal to the floor at the train door, the angle between the upper surface of the limiting baffle 105 and the upper surface of the parking pallet 104 will be equal to 180°. Preferably, the height of the parking tray 104 can be raised to the same height as the floor at the train door, so that the upper surface of the limiting baffle 105 and the upper surface of the parking tray 104 are on the same plane; of course, when the angle between the upper surface of the limiting baffle 105 and the upper surface of the parking tray 104 is 160°~200°, it will not increase the difficulty of wheelchair passage.

[0069] Furthermore, the limiting baffle 105 may also include a limiting position. When the limiting baffle 105 is in the limiting position, the surface of the limiting baffle 105 is perpendicular to the surface of the parking tray 104, and the limiting baffle 105 is located above the parking tray 104. After the passenger or wheelchair moves from the limiting baffle 105 onto the parking tray 104, the limiting baffle 105 can be rotated to the limiting position, causing the limiting baffle 105 to swing above the parking tray 104 to prevent the wheelchair from rolling off the second end of the parking tray 104. Similarly, if the passenger rises or falls with the parking tray 104, the ramp 106 can also be rotated onto the parking tray 104 to prevent the wheelchair from rolling off the first end of the parking tray 104, thus improving safety.

[0070] It should be noted that the vehicle entry and exit assist device may be equipped with a locking member to lock the limiting baffle 105 in the limiting position, so as to keep the limiting baffle 105 in the limiting position. When the limiting baffle 105 is in the folded position, the limiting baffle 105 is perpendicular to the parking tray 104 and is located below the parking tray 104. The folding of the limiting baffle 105 can be achieved by utilizing the natural downward hanging of the limiting baffle 105.

[0071] In one specific embodiment of this utility model, the boarding and alighting assistance device may further include a handrail 107, which is disposed on the parking tray 104. There are two handrails 107, symmetrically arranged on both sides of the parking tray 104. After a passenger is positioned on the parking tray 104, the handrails 107 provide a gripping function, enhancing the safety of the entire device.

[0072] Furthermore, the handrail 107 is hinged to the parking tray 104, allowing it to swing between a folded position and a usable position. When in the usable position, the handrail 107 is perpendicular to the parking tray 104 for passengers to hold. When in the folded position, the handrail 107 lies flat on the upper surface of the parking tray 104, reducing the area occupied by the device and enhancing the overall convenience of the device.

[0073] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0074] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0075] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0076] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A boarding and alighting assistance device characterized by comprising: The utility model relates to a folding table, comprising: a support base and a parking plate (104); a driving device arranged on the support base and used to drive the parking plate (104) to perform a lifting action; a passage plate (106) hingedly connected to a first end of the parking plate (104) so that the passage plate (106) can swing between a folded position and a use position, and when the passage plate (106) is in the use position, the upper surface of the passage plate (106) forms an angle greater than 180° and less than 270° with the upper surface of the parking plate (104).

2. The boarding and alighting assisting device according to claim 1, characterized by The driving device comprises: a scissor linkage (103) having one end arranged on the support base and the other end arranged on the parking plate (104); a telescopic driving device having one end arranged on the support base and the other end connected to a link of the scissor linkage (103).

3. The boarding and alighting assistance device according to claim 2, characterized by The telescopic driving device is an electric push rod or a piston cylinder mechanism; and / or, The scissor linkage (103) has two, and the telescopic driving device is connected to the links of the same function of the two scissor linkages (103) through a connecting rod, and the telescopic driving device is connected to the connecting rod; and / or, The support base comprises a base (101) and a leveling foot (102) arranged at the bottom of the base (101).

4. Embarkation and disembarkation aid according to any one of claims 1-3, characterized in that The passage plate (106) comprises a plurality of sub-passage plates, and any two adjacent sub-passage plates are hingedly connected; When the passage plate (106) is in the folded position, each sub-passage plate is rotated to have the plate surfaces sequentially abut.

5. The boarding and alighting assisting device according to claim 4, characterized by The hinge connecting any two sub-passage plates comprises: a first hinge connecting plate fixed to one of the sub-passage plates; a second hinge connecting plate fixed to the other sub-passage plate; a hinge shaft, the first hinge connecting plate and the second hinge connecting plate are hingedly connected through the hinge shaft, one end of the hinge shaft has a limiting portion for preventing the first hinge connecting plate and the second hinge connecting plate from being separated from the hinge shaft, and the other end of the hinge shaft is a screw portion; a locking nut threadedly matched with the screw portion.

6. The boarding and alighting assisting device according to claim 4, wherein When the passage plate (106) is in the use position, each sub-passage plate is located on the same plane; The hinge connecting any two sub-passage plates is a self-locking hinge, so that when the passage plate (106) is in the use position and the upper surface of the passage plate (106) is stressed, each sub-passage plate cannot be rotated.

7. The boarding and alighting assisting device according to any one of claims 1 to 3, characterized by Further comprising a limiting baffle (105) hingedly connected to a second end of the parking plate (104) so that the limiting baffle (105) can swing between a folded position and a use position, and when the limiting baffle (105) is in the use position, the upper surface of the limiting baffle (105) forms an angle of 160°-200° with the upper surface of the parking plate (104).

8. The boarding and alighting assistance device according to claim 7, characterized by The limiting baffle (105) further comprises a limiting position, when the limiting baffle (105) is in the limiting position, the plate surface of the limiting baffle (105) is perpendicular to the plate surface of the parking supporting plate (104), and the limiting baffle (105) is above the parking supporting plate (104); When the limiting baffle (105) is in the folding position, the limiting baffle (105) is perpendicular to the parking supporting plate (104), and the limiting baffle (105) is below the parking supporting plate (104).

9. The boarding and alighting assisting device according to any one of claims 1 to 3, characterized by Further comprising a holding guardrail handrail (107), which is arranged on the parking supporting plate (104).

10. The boarding and alighting assistance device according to claim 9, characterized by The holding guardrail handrail (107) is two and symmetrically arranged on both sides of the parking supporting plate (104); The holding guardrail handrail (107) is hinged to the parking supporting plate (104), so that the holding guardrail handrail (107) can swing between the folding position and the use position, when the holding guardrail handrail (107) is in the use position, the holding guardrail handrail (107) is perpendicular to the parking supporting plate (104), when the holding guardrail handrail (107) is in the folding position, the holding guardrail handrail (107) is laid on the upper surface of the parking supporting plate (104).

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