Boarding ladder
By designing a boarding ladder with tread assembly, support assembly, and anchoring assembly, the safety hazards caused by uneven railway surface were solved, and the stability and safety of the ladder in high slope sections were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHUOHUANG RAILWAY DEV
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-19
AI Technical Summary
Uneven railway tracks pose safety hazards for staff getting on and off the train, especially on high slopes where safety is difficult to guarantee.
Design a boarding ladder that includes a tread assembly, a support assembly, and an anchoring assembly. The ladder is designed to make close contact with the railway ballast through rotatable fixed parts and flexible parts, thereby increasing the support surface, lowering the center of gravity, and improving stability.
The support surface between the boarding ladder and the ground has been enhanced, improving the safety and stability for staff getting on and off the vehicle, especially on uneven and high slope sections.
Smart Images
Figure CN224256653U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of railway technology, and in particular to a boarding ladder. Background Technology
[0002] The railway has many stones, resulting in an uneven surface, which can pose safety hazards for staff when boarding and alighting. Utility Model Content
[0003] Based on this, this application provides a boarding ladder to improve the safety of staff when boarding and alighting at railway stations.
[0004] This application provides a boarding ladder, including:
[0005] The pedal assembly includes two mounting members spaced apart in a first direction;
[0006] The support assembly includes two links, each rotatably connected to one of two mounting members. The links are configured to extend and retract along their longitudinal direction. One end of each mounting member facing away from the links is used to contact the ground.
[0007] Anchoring components, including:
[0008] The fastener has two ends in the first direction connected to two connecting rods respectively, and the fastener is rotatably connected to both connecting rods;
[0009] The positioning element is located on the side of the fixing element opposite to the two connecting rods; and
[0010] The flexible component and the first anti-slip component are provided. One end of the flexible component is connected to the fixed component, and the other end is connected to the first anti-slip component.
[0011] In one embodiment, the fixing member includes a rotatable shaft and a first plate disposed on the outer peripheral surface of the shaft; the rotation axis of the shaft is parallel to a first direction; the cross-section of the first plate in the direction perpendicular to the thickness of the first plate is triangular; a positioning member is disposed at the apex of the first plate; the thickness direction of the first plate is perpendicular to the first direction.
[0012] In one embodiment, the shape of the cross section of the first plate in the direction perpendicular to the thickness of the first plate is an isosceles triangle, and the axial direction of the isosceles triangle is perpendicular to the first direction.
[0013] In one embodiment, the vertex angle of the isosceles triangle is 30° to 50°.
[0014] In one embodiment, the positioning element is a second plate, and the cross-section of the second plate in the direction perpendicular to its thickness is triangular; the thickness direction of the second plate is parallel to the first direction.
[0015] In one embodiment, the cross-section of the second plate in the direction perpendicular to the thickness of the second plate is an isosceles right triangle.
[0016] In one embodiment, multiple flexible elements are provided, and all flexible elements are disposed on both sides of the first plate in a first direction.
[0017] In one embodiment, the fastener is threadedly connected to both connecting rods; and / or
[0018] The flexible component is a flexible strip.
[0019] In one embodiment, the boarding ladder further includes a telescopic member, one end of which is hinged to a connecting rod along the telescopic direction, and the other end of which is hinged to a mounting member along the telescopic direction.
[0020] In one embodiment, the boarding ladder also includes a second anti-slip element;
[0021] The second anti-slip component is located at the bottom end of the connecting rod; and / or
[0022] The second anti-slip component is located on the end of the mounting component opposite to the connecting rod.
[0023] The aforementioned boarding ladder includes a step assembly, a support assembly, and an anchoring assembly. When needed, the step assembly and support assembly are placed at a certain angle on the ground. The fixing component in the anchoring assembly rotates until the positioning component can embed into the ballast on the railway. Simultaneously, the flexible component can be manipulated to extend and deform, moving the anti-slip component connected to it, which is then embedded into the ballast. The anchoring assembly lowers the center of gravity of the boarding ladder, and the fixing and flexible components are in close contact with the ballast on the ground, increasing the support surface formed by the contact between the boarding ladder and the ground. This support surface refers to the surface formed by the support point formed by the contact between the object and the ground and the ground, thereby increasing the stability of the boarding ladder and improving the safety of workers boarding and alighting at the railway. Attached Figure Description
[0024] Figure 1 This is a three-dimensional structural diagram of the boarding ladder in some embodiments of this application.
[0025] Figure 2 for Figure 1 A three-dimensional structural diagram of the anchoring structure of the boarding ladder.
[0026] Figure 3 for Figure 1 A schematic diagram of the orthographic projection of the first plate in the boarding ladder onto the first projection plane.
[0027] Figure 4 for Figure 1A side view of the boarding stairs in the diagram.
[0028] The reference numerals in the detailed embodiments are as follows:
[0029] 100. Boarding ladder; 110. Pedal assembly; 111. Mounting component; 1111. Handle; 112. Pedal; 120. Support assembly; 121. Linkage rod; 130. Anchoring assembly; 131. Fixing component; 1311. Rotating shaft; 1312. First plate; 132. Positioning component; 132a. Second plate; 133. First anti-slip component; 134. Flexible component; 140. Telescopic component; 150. Second anti-slip component; α. Vertex angle of isosceles triangle; M1. First projection plane; F1. First direction. Detailed Implementation
[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0032] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0036] When railway staff on official trains and track vehicles need to go to the work site for work or other purposes, the lack of dedicated ladders for getting on and off the train in high slope areas makes it impossible to guarantee their safety. High slope areas refer to slope protection areas with significant height and steep gradients.
[0037] Please refer to Figure 1 , Figure 1 A perspective structural schematic diagram of a boarding ladder 100 in some embodiments of this application is shown. The boarding ladder 100 includes a pedal assembly 110, a support assembly 120, and an anchoring assembly 130.
[0038] The pedal assembly 110 includes two mounting members 111, which are spaced apart in the first direction F1. The pedal assembly 110 also includes a pedal 112, which is disposed between the two mounting members 111. The pedal 112 is used by staff to step on when getting on and off the vehicle.
[0039] The support assembly 120 is a component that supports the step assembly 110. Specifically, the support assembly 120 includes two connecting rods 121, each rotatably connected to two mounting members 111. The connecting rods 121 are configured to extend and retract along their longitudinal direction. The end of each mounting member 111 facing away from the connecting rod 121 is used to contact the ground. This allows adjustment of the relative position between the step assembly 110 and the support assembly 120, changing the height of the loading ladder 100 so that the steps 112 face the vehicle door, suitable for different working conditions. Furthermore, the rotatably connected connecting rods 121 and mounting members 111 enable the loading ladder 100 to be quickly deployed and retracted, facilitating transport.
[0040] The anchoring assembly 130 is a component that enhances the stability of the loading ladder 100. Specifically, the anchoring assembly 130 includes a fixing member 131, a positioning member 132, a flexible member 134, and a first anti-slip member 133. The fixing member 131 is connected to two connecting rods at both ends in the first direction F1, and the fixing member 131 is rotatably connected to both connecting rods 121. The positioning member 132 is located on the side of the fixing member 131 facing away from the two connecting rods. One end of the flexible member 134 is connected to the fixing member 131, and the other end is connected to the first anti-slip member 133. By rotating the fixing member 131, the positioning member 132 is flipped into the ballast embedded in the ground. Specifically, the positioning member can be flipped in the direction away from the mounting member 111, increasing the support surface formed by the contact between the loading ladder 100 and the ground, thus making the loading ladder 100 more stable. The flexible component 134 and the first anti-slip component 133 are designed to allow the first anti-slip component 133 to be embedded in the ballast on the railway when the boarding ladder 100 needs to be relatively fixed to the ground upon reaching the target position. The flexible component 134 allows the first anti-slip component 133 to move to the target position according to the working conditions. This further increases the support surface of the boarding ladder 100, thereby making the boarding ladder 100 more stable.
[0041] Understandably, when needed, the step assembly 110 and support assembly 120 are placed at a certain angle on the ground. The fixing member 131 in the anchoring assembly 130 is rotated until the positioning member 132 can be embedded in the ballast on the railway. At the same time, the flexible member 134 can be operated to extend and deform, thereby moving the first anti-slip member 133 connected to the flexible member 134, and then embedding the first anti-slip member 133 into the ballast. The anchoring assembly 130 lowers the center of gravity of the boarding ladder 100, and the fixing member 131 and the flexible member 134 are in close contact with the ballast on the ground, increasing the support surface formed by the contact between the boarding ladder 100 and the ground. The support surface refers to the surface formed by the support point formed by the contact between the object and the ground and the ground, thereby increasing the stability of the boarding ladder 100 and improving the safety of workers when getting on and off the train at the railway.
[0042] Specifically, in some embodiments, when the link 121 is in use, the extension and retraction direction of the link 121 can be set to be parallel to the direction of gravity. In some embodiments, the two ends of the link 121 in the extension and retraction direction are respectively the upper end and the lower end, or the lower end can be set to be further away from the pedal assembly 110 than the upper end. This makes the support surface of the boarding ladder 100 larger and the center of gravity of the boarding ladder 100 lower, making the boarding ladder 100 more stable.
[0043] Compared to ordinary vertical ladders, the boarding ladder 100 of this application has an increased support surface formed by contact with the ground, which makes the boarding ladder 100 of this application more stable and makes it safer for staff to get on and off vehicles.
[0044] In some embodiments of this application, reference continues to be made to... Figure 1 The fixing member 131 includes a rotatable shaft 1311 and a first plate 1312 disposed on the outer peripheral surface of the shaft 1311; the rotation axis of the shaft 1311 is parallel to the first direction F1; the cross-section of the first plate 1312 in the direction perpendicular to the thickness of the first plate 1312 is triangular; the positioning member 132 is disposed at the apex of the first plate 1312; the thickness direction of the first plate 1312 is perpendicular to the first direction F1.
[0045] With this configuration, the fixing component 131 includes a rotating shaft 1311 and a first plate 1312. By rotating the rotating shaft 1311 and the first plate 1312, the relative position of the support points and the size of the support surface of the loading ladder 100 can be adjusted, thereby increasing the support surface of the loading ladder 100, improving its stability, and making it safer for workers to board and disembark. The cross-sectional shape of the first plate 1312 in the direction perpendicular to its thickness is set as a triangle, and the positioning component 132 is set at the apex of the first plate 1312. The apex is relatively sharp and has a small area, making it easier for the positioning component 132 to be smoothly embedded into the ballast gap, thus improving the stability of the loading ladder 100.
[0046] Furthermore, the weight of the first plate 1312 can be set to be heavier, thereby lowering the center of gravity of the boarding ladder 100 and increasing the stability of the boarding ladder 100.
[0047] Positioning member 132 can be set on both sides of the first plate 1312 in the thickness direction, so that the first plate 1312 can rotate and embed into the stone gap in the direction away from the pedal assembly 110, further increasing the support surface of the boarding ladder 100, thereby improving the stability of the boarding ladder 100.
[0048] In some other embodiments, the shape of the cross section of the first plate 1312 in the direction perpendicular to the thickness of the first plate 1312 can also be set as a rectangle, square, pentagon and hexagon, etc., without limitation.
[0049] Compared to the first plate 1312, which has a triangular cross-section in the direction perpendicular to its thickness, rectangular plates or other shaped plates have relatively wide ends on the side away from the pivot 1311. When the positioning member 132 is inserted into the ballast, it may cause compression and blockage of the ballast, thus increasing the difficulty of inserting the positioning member 132 into the ballast. Therefore, setting the cross-section of the first plate 1312 in the direction perpendicular to its thickness to be triangular can also improve the ease of operation of the anchoring component 130 in the boarding ladder 100.
[0050] In some embodiments of this application, reference continues to be made to... Figure 1 and in conjunction with reference Figure 2 , Figure 2 It shows Figure 1 A schematic diagram of the anchoring component 130 in the boarding ladder 100. The cross-section of the first plate 1312 in the direction perpendicular to its thickness is an isosceles triangle, and the axial direction of the isosceles triangle is perpendicular to the first direction F1.
[0051] From the structure of the first plate 1312, the cross-section of the first plate 1312 in the direction perpendicular to its thickness is an isosceles triangle. The first plate 1312 has a symmetrical structure, resulting in higher rigidity and strength, and making it less prone to deformation. Furthermore, the axis of the isosceles triangle is perpendicular to the first direction F1, meaning the axis of the isosceles triangle is perpendicular to the spacing direction of the two connecting rods 121. Thus, the distance between the positioning member 132 and the two connecting rods 121 is equal. When the boarding ladder 100 is under stress, the force on the two connecting rods 121 is more even, reducing the risk of concentrated force on one side of the connecting rods 121 and extending the service life of the boarding ladder 100.
[0052] In some embodiments of this application, reference continues to be made to... Figure 1 and Figure 2 and in conjunction with reference Figure 3 , Figure 3 It shows Figure 1 A schematic diagram of the orthographic projection of the first plate 1312 of the boarding ladder 100 onto the first projection plane M1. The first projection plane M1 is perpendicular to the direction of gravity, and the first direction F1 is parallel to the first projection plane M1. The vertex angle α of the isosceles triangle is 30° to 50°.
[0053] Setting the vertex angle α of the isosceles triangle to 30° to 50° implies that the other two angles are between 65° and 75°. This balances the advantages of long service life and ease of embedding into stone joints. With this vertex angle, it is less prone to wear and deformation, and also easier to embed into stone joints.
[0054] In some embodiments of this application, reference continues to be made to... Figure 1 and Figure 2 The positioning element 132 is the second plate 132a. The cross-section of the second plate 132a in the direction perpendicular to its thickness is triangular. The thickness direction of the second plate 132a is parallel to the first direction F1.
[0055] From the structure of the second plate 132a, the cross-section of the second plate 132a in the direction perpendicular to its thickness is triangular. The triangular shape of the second plate 132a provides higher rigidity and strength, making it less prone to deformation. Furthermore, the triangle's stability makes the positioning component 132 less likely to sway under stress. The thickness direction of the second plate 132a is parallel to the first direction F1, meaning the smallest dimension surface of the second plate 132a is connected to the first plate 1312. As analyzed above, the second plate 132a is located at the apex of the first plate 1312. The smallest dimension surface of the second plate 132a can be more firmly attached to the first plate 1312. The fixing method is not limited; bonding or welding can be used. When the second plate 132a moves towards the stone crevice, its smallest dimension surface contacts the crevice, making it easier for the second plate 132a to embed into the ballast and reducing the risk of the boarding ladder 100 swaying.
[0056] In some embodiments of this application, reference continues to be made to... Figures 1 to 3 and in conjunction with reference Figure 4 , Figure 4 It shows Figure 1 A side view of the boarding ladder 100. The cross-section of the second plate 132a in the direction perpendicular to its thickness is an isosceles right triangle.
[0057] From the structure of the second plate 132a, the cross-section of the second plate 132a in the direction perpendicular to the thickness of the first plate 1312 is an isosceles right triangle. The two legs of the isosceles right triangle are of equal length and the included angle is 90°. This design makes the second plate 132a a symmetrical structure with higher rigidity and strength, and less prone to deformation. The cross-section of the second plate 132a in the direction perpendicular to the thickness of the first plate 1312 is also an isosceles right triangle, so that the first leg of the isosceles right triangle fits against the first plate 1312, and the second leg is perpendicular to the first plate 1312. When the boarding ladder 100 is subjected to force, the surface containing the second leg can directly bear the reaction force from the ground and evenly transfer it to the first leg connected to the first plate 1312. This perpendicular structure makes the force transmission more direct and stable, reducing energy loss during the stress process.
[0058] In some embodiments of this application, reference continues to be made to... Figures 1 to 4 Multiple flexible elements 134 are provided, and all flexible elements 134 are distributed on both sides of the first plate 1312 in the first direction F1.
[0059] Multiple flexible components 134 are distributed on both sides of the first plate 1312, which is equivalent to increasing the number of contact points between the loading ladder 100 and the ground. These multiple contact points form a wider and more dispersed support surface, thereby enhancing the stability of the loading ladder 100. Furthermore, the flexible components 134 are symmetrically arranged on both sides of the first plate 1312 in the first direction, making the weight of the loading ladder 100 more balanced in the first direction, improving its balance performance, and making it less likely to tip over when subjected to external forces.
[0060] In some embodiments of this application, reference continues to be made to... Figures 1 to 4 The fixing member 131 is threadedly connected to both connecting rods 121; and / or, the flexible member 134 is configured as a flexible strip.
[0061] With the fastener 131 and both connecting rods 121 all threadedly connected, the fastener 131 and the two connecting rods 121 can be detachably and rotated together in a controlled manner. When the loading ladder 100 needs to be stored, the mounting member 111 rotates relative to the connecting rod 121, disassembling the connecting rod 121 and the fastener 131, reducing the risk of collision between the mounting member 111 and the fastener 131, and extending the service life of the loading ladder 100. When the fastener 131 rotates to the target position, the screw can quickly and securely connect the connecting rod 121 and the fastener 131 together, improving the ease of use of the loading ladder 100. Furthermore, the threaded connection method is simple and low-cost.
[0062] In other embodiments, an electronic control device can be used to achieve a controllable and detachable rotatable connection between the fixing member 131 and the connecting rod 121. For example, the electronic control device may include a motor and a control module. The motor is connected to the fixing member 131, and the rotation of the motor can be adjusted by the control module, thereby realizing the connection and detachment between the fixing member 131 and the connecting rod 121.
[0063] Under the condition that "flexible component 134 is set as a flexible strip", continue to refer to Figures 1 to 4 When the first anti-slip component 133 is not needed, it can be wrapped around the fixing component 131 with a flexible strip. This is especially useful in complex working environments along railway lines where workers may need to frequently move and re-erect the boarding ladder 100. This easy-to-use design for storing the first anti-slip component 133 saves workers time and effort. Specifically, the length of the flexible strip can be selected according to the size of the fixing component 131 and the application scenario.
[0064] Furthermore, the length of the flexible strip can be set to around 80cm, which not only allows it to be firmly wrapped around the fixing component 131, but also gives the first anti-slip component 133 a larger range of motion.
[0065] The aforementioned "fixed member 131 is threadedly connected to both connecting rods 121" and "flexible member 134 is set as a flexible strip" can be combined arbitrarily according to actual conditions.
[0066] In some embodiments of this application, reference continues to be made to... Figures 1 to 4 The boarding ladder 100 includes a telescopic member 140, one end of which is hinged to a connecting rod 121 along the telescopic direction of the telescopic member 140, and the other end of which is hinged to a mounting member 111 along the telescopic direction of the telescopic member 140.
[0067] This design facilitates height adjustment of the loading ladder 100 to suit different working conditions and scenarios. The telescopic component 140 is hinged, allowing relative rotation between the telescopic component 140, connecting rod 121, and mounting component 111 within a certain angle range. When the loading ladder 100 is placed on uneven ground, each component can automatically adjust its angle according to the ground's undulations, enabling the loading ladder 100 to better conform to the ground and form stable support. Furthermore, the telescopic component 140, connecting rod 121, and mounting component 111 together form a triangular support, enhancing the stability of the loading ladder 100. The structure of the telescopic component 140 is not limited, as long as it can extend and retract along its longitudinal extension direction. Specifically, the telescopic component 140 can be configured as a telescopic rod. For example, the telescopic rod consists of multiple concentric sleeves, each sleeve's outer diameter being slightly smaller than the inner diameter of the adjacent outer sleeve, allowing relative sliding between the sleeves and thus changing the total length of the telescopic rod. Telescopic poles are generally equipped with locking devices, such as screws, pins, or lock nuts. When the telescopic pole reaches the target position, the locking device locks the telescopic pole, so that the length of the telescopic pole remains fixed.
[0068] In some embodiments of this application, reference continues to be made to... Figures 1 to 4 The second anti-slip element 150 is disposed at the bottom end of the connecting rod 121; and / or, the second anti-slip element 150 is disposed on the end of the mounting member 111 opposite to the connecting rod 121.
[0069] When the second anti-slip component 150 is installed at the bottom of the connecting rod 121, the second anti-slip component 150 installed on the connecting rod 121 contacts the ground when the boarding ladder 100 is placed on the ground, thereby improving the stability of the boarding ladder 100.
[0070] When the second anti-slip component 150 is provided on the end of the mounting component 111 away from the connecting rod 121, the second anti-slip component 150 provided on one end of the mounting component 111 contacts the ground when the boarding ladder 100 is placed on the ground, thereby improving the stability of the boarding ladder 100.
[0071] The second anti-slip component 150 can be configured as a spike tray. The spikes at the bottom of the spike tray can penetrate deep into the ballast, providing strong grip. The durability and adaptability of the spike tray ensure that it maintains good anti-slip performance under various ground conditions, reducing the risk of the loading ladder 100 swaying.
[0072] The aforementioned "second anti-slip component 150 is disposed at the bottom end of connecting rod 121" and "second anti-slip component 150 is disposed on the end of mounting component 111 away from connecting rod 121" can be combined arbitrarily according to actual conditions.
[0073] Furthermore, without support or protection, workers are prone to serious consequences if they fall, especially in high-altitude operations on high slopes. Therefore, the installation component 111 of the loading ladder 100 in this application also includes a handle 1111 for use by personnel getting on and off the vehicle, thereby improving the safety of workers getting on and off the vehicle.
[0074] This application applies to personnel boarding and alighting on engineering railcars at high elevations. Workers are more prone to falls when boarding or alighting at heights or in areas with many stones, therefore the boarding ladder 100 needs to have high stability. The usage steps of the boarding ladder 100 are illustrated as follows: First, determine the boarding and alighting location. Based on the height of the slope, the height of the rail surface, and the height of the railcar door, calculate the height of the boarding ladder 100. Adjust the boarding ladder 100 to a suitable position according to the determined height. After the vehicle arrives, move the boarding ladder 100 to the door. If it does not align with the door, adjust the angle and height of the boarding ladder 100 to ensure a more precise alignment, making it safer for workers to board and alight. After the staff completes the boarding or alighting, the mounting part 111 can be rotated toward the connecting rod 121. At the same time, the telescopic part 140 extends and retracts, wrapping the flexible part 134 around the fixed part 131 and storing it, so that the boarding ladder 100 is in the stored state and the boarding ladder 100 is withdrawn.
[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0076] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A boarding ladder, characterized in that, The boarding stairs include: The pedal assembly includes two mounting members spaced apart in a first direction; A support assembly includes two links, each rotatably connected to one of the two mounting members, the links being configured to extend and retract along their longitudinal direction; one end of each mounting member opposite to the links is used to contact the ground; and Anchoring components, including: A fixing member, wherein both ends of the fixing member in the first direction are respectively connected to the two connecting rods, and the fixing member is rotatably connected to both connecting rods; A positioning element is disposed on the side of the fixing element opposite to the two connecting rods; and A flexible component and a first anti-slip component, wherein one end of the flexible component is connected to the fixed component and the other end is connected to the first anti-slip component.
2. The boarding ladder according to claim 1, characterized in that, The fixing member includes a rotatable shaft and a first plate disposed on the outer peripheral surface of the shaft; the rotation axis of the shaft is parallel to the first direction; the cross-section of the first plate in the direction perpendicular to the thickness of the first plate is triangular; the positioning member is disposed at the apex of the first plate; the thickness direction of the first plate is perpendicular to the first direction.
3. The boarding ladder according to claim 2, characterized in that, The first plate has an isosceles triangle shape in the cross-section perpendicular to its thickness direction, and the axis of the isosceles triangle is perpendicular to the first direction.
4. The boarding ladder according to claim 3, characterized in that, The vertex angle of the isosceles triangle is between 30° and 50°.
5. The boarding ladder according to claim 2, characterized in that, The positioning element is a second plate, and the cross-section of the second plate in the direction perpendicular to its thickness is triangular; the thickness direction of the second plate is parallel to the first direction.
6. The boarding ladder according to claim 5, characterized in that, The cross-section of the second plate in the direction perpendicular to its thickness is an isosceles right triangle.
7. The boarding ladder according to claim 2, characterized in that, Multiple flexible components are provided, and all of the flexible components are disposed on both sides of the first plate in the first direction.
8. The boarding ladder according to any one of claims 1-6, characterized in that, The fixing member is threadedly connected to both of the connecting rods; and / or The flexible component is a flexible strip.
9. The boarding ladder according to any one of claims 1-6, characterized in that, The boarding ladder also includes a telescopic component, one end of which is hinged to the connecting rod along the telescopic direction, and the other end of which is hinged to the mounting component along the telescopic direction.
10. The boarding ladder according to any one of claims 1-6, characterized in that, The boarding ladder also includes a second anti-slip component; Wherein, the second anti-slip component is disposed at the bottom end of the connecting rod; and / or The second anti-slip component is disposed on the end of the mounting component opposite to the connecting rod.