A highway guardrail climbing ladder

Abstract

The application relates to the field of highway safety equipment, in particular to a highway side guardrail climbing ladder, which comprises a main ladder part located at the outer side of the guardrail, a vice ladder part which can be folded to the road surface on the inner side of the guardrail and is hinged to the top end of the main ladder part, a handrail which can be vertically arranged on the top of the vice ladder part and is hinged to the top of the vice ladder part, and a limiting assembly which is connected to the root of the handrail and is used for positioning the handrail. The application can be prearranged on the outer side of the highway. When used, the user can turn the vice ladder part around the hinge point on the top to the inner side of the guardrail, so that the bottom end of the vice ladder part falls on the road surface and is supported, then the handrail which leans on the vice ladder part is folded upwards around the hinge point on the top end of the vice ladder part, after being folded in place, the handrail is positioned by the limiting assembly to ensure that the handrail is vertically arranged on the top of the vice ladder part, the user can hold the handrail and step on the ladder step to climb over, so as to be transferred to the safe outer side of the guardrail.

Description

Technical Field

[0001] This invention relates to the field of highway safety equipment, specifically a highway side guardrail climbing ladder. Background Technology

[0002] In the event of a vehicle accident or breakdown on a highway, drivers and passengers, to prevent secondary accidents and ensure personal safety, will first pull the vehicle to the side of the road and move to the outside of the guardrail to await rescue. The original standard height of the guardrail was 70 centimeters, allowing drivers and passengers to easily climb over it to avoid danger after a vehicle breakdown or accident. However, according to the "Specifications for the Design of Highway Traffic Safety Facilities," a highway guardrail upgrade project was implemented starting in 2017, raising the standard guardrail height to 98.5 centimeters. This increased height makes it more difficult for women, the elderly, children, and people with special physical characteristics to climb over, increasing the risk of falls and discouraging them from exerting the effort to climb over. Consequently, they remain on the emergency lane, significantly increasing the risk of secondary accidents. Therefore, developing a low-cost, safe, simple, and foldable guardrail climbing device is essential.

[0003] Our company previously designed patented emergency escape platforms for bridges and elevated roads, such as the patent with publication number CN 219032910 U, which describes an emergency escape platform for bridges. This platform is fixedly installed on the outer side of the bridge, comprising an aluminum alloy base plate and a bottom frame. A U-shaped connecting frame is connected to one side of the platform and installed on the outer perimeter of the bridge side. Fasteners are installed between the U-shaped connecting frame and the bridge. Guardrails are installed around the outer perimeter of the platform. In the event of an emergency, passengers in vehicles can enter the emergency escape platform for shelter, effectively ensuring the safety of those seeking shelter, significantly reducing the probability of secondary accidents on highway bridges, and improving the operational safety of highway bridges. However, this device is only suitable for elevated roads and bridges; ordinary highways do not require such a costly platform. A suitable ladder is sufficient. Utility Model Content

[0004] The purpose of this invention is to provide a folding escalator for a high-speed emergency escape platform in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A highway side guardrail climbing ladder includes a main ladder located on the outside of the guardrail and a secondary ladder hinged to the top of the main ladder and foldable to the road surface inside the guardrail. A handrail is hinged to the top of the secondary ladder and can be erected on the top of the secondary ladder. A limiting component for positioning the handrail is connected to the base of the handrail. When the secondary ladder is overlapped with the main ladder, the handrail is located on the side of the secondary ladder closer to the main ladder.

[0006] Preferably, when the secondary stair section overlaps with the main stair section, the secondary stair section and the handrail are located outside the main stair section, and the handrail is attached to the secondary stair column of the secondary stair section and parallel to the secondary stair column.

[0007] Preferably, the limiting assembly includes a hinged stop plate fixed to the top of the secondary stair section, a hinged arm fixed to the end of the handrail, and an elastic limiting plate hinged to the end of the handrail. The hinged arm and the elastic limiting plate are respectively disposed on both sides of the hinged stop plate, and the arm end of the hinged arm is hinged to the hinged stop plate. The hinged stop plate has a limiting hole, and the end of the elastic limiting plate is provided with a limiting post that can be inserted into the limiting hole.

[0008] Preferably, when the handrail is erected on the top of the secondary staircase, the middle part of the elastic limiting plate is hinged to the root of the handrail, the lower end is provided with a limiting post, and the upper end is connected to the side wall of the handrail through a spring sheet.

[0009] Preferably, the hinge arm is an L-shaped arm, with the free end of the L-shape hinged to the hinge stop plate, and the hinge stop plate is a sector-shaped plate.

[0010] Preferably, the hinged arm is provided with a limiting plate that can abut against the top of the secondary ladder when the handrail is erected on the top of the secondary ladder, so that it cooperates with the limiting post inserted into the limiting hole to make the handrail stand stably on the top of the secondary ladder.

[0011] Preferably, when the secondary ladder section overlaps with the main ladder section, the steps on the secondary ladder section are vertically offset from the steps on the main ladder section.

[0012] Preferably, a handle is provided at the middle of the outer side of the secondary ladder.

[0013] Preferably, the upper middle part of the main ladder is provided with support legs.

[0014] The advantages of the water-washed cotton cutting machine proposed in this invention are as follows: 1. This application can be pre-installed on the outside of the highway, for example, by placing the main ladder against the outside of the guardrail, or by placing the support legs close to the outside of the guardrail and supporting the main ladder. When in use, the user can flip the secondary ladder around the top hinge point inwards towards the guardrail so that the bottom of the secondary ladder rests on the road surface for support. Then, the handrail resting on the secondary ladder can be folded upwards around the top hinge point of the secondary ladder. After folding into place, the handrail is positioned by the limiting component to ensure that the handrail stands on the top of the secondary ladder. The user can then grab the handrail and step on the steps to climb over and move to the safe outside of the guardrail. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the unfolded structure of this application; Figure 2 This is a schematic diagram of the handrail in its unfolded state. Figure 3 A schematic diagram showing the structural configuration for use in conjunction with guardrails; Figure 4 This is a schematic diagram of the superimposed structure; Figure 5 This is a schematic diagram of the limit component structure. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1: A highway side guardrail climbing ladder includes a main ladder section 1 located on the outside of the guardrail and a secondary ladder section 2 hinged to the top of the main ladder section and foldable to the road surface inside the guardrail. A handrail 3 is hinged to the top of the secondary ladder section and can be erected on the top of the secondary ladder section. A limiting component 5 for positioning the handrail is connected to the base of the handrail. When the secondary ladder section and the main ladder section are stacked, the handrail is located on the side of the secondary ladder section closer to the main ladder section, so that the handrail on the flipped-over secondary ladder section can be easily unfolded, and the stacked structure has a strong overall integrity.

[0018] When the secondary ladder section is stacked with the main ladder section, the secondary ladder section and the handrail are located outside the main ladder section, and the handrail is attached to the secondary ladder column 4 of the secondary ladder section, which is parallel to the secondary ladder column. This structural design improves the overall integrity of the stacked ladder, resulting in a flat, well-organized, and easily transportable structure that is also convenient to unfold.

[0019] This application can be pre-installed on the outside of the highway, for example, by placing the main ladder against the outside of the guardrail, or by placing the support legs 7 close to the outside of the guardrail and supporting the main ladder. When in use, the user can flip the secondary ladder around the top hinge point towards the inside of the guardrail so that the bottom of the secondary ladder rests on the road surface for support. Then, the handrail resting on the secondary ladder can be folded upwards around the top hinge point of the secondary ladder. After folding into place, the handrail is positioned by the limiting component to ensure that the handrail stands on the top of the secondary ladder. The user can then grab the handrail and step on the steps to climb over and move to the safe outside of the guardrail.

[0020] The limiting assembly includes a hinged stop plate 51 fixed to the top of the secondary stair section, a hinged arm 52 fixed to the end of the handrail, and an elastic limiting plate 53 hinged to the end of the handrail. The hinged arm and the elastic limiting plate are respectively located on both sides of the hinged stop plate, and the arm end of the hinged arm is hinged to the hinged stop plate. A limiting hole 511 is provided on the hinged stop plate, and a limiting post 531 that can be inserted into the limiting hole is provided at the end of the elastic limiting plate.

[0021] When the handrail is erected at the top of the secondary staircase, the middle part of the elastic limiting plate is hinged to the root of the handrail, the lower end is provided with a limiting post, and the upper end is connected to the side wall of the handrail through a spring sheet 54.

[0022] Due to the action of the spring plate, the limiting post at the bottom of the elastic limiting plate is always pushed towards the hinge stop plate. When needed, the handrail is flipped upwards, causing the limiting post to slide on the hinge stop plate until it inserts into the limiting hole. At this point, the handrail flips into position, standing on top of the subframe and being limited by the limiting post and the limiting hole. When the handrail needs to be retracted, the upper part of the elastic limiting plate can be pressed inwards towards the handrail, causing the lower end of the elastic limiting plate to extend outwards around the hinge point, disengaging the limiting post from the limiting hole. At this point, the handrail can be rotated to retract.

[0023] Example 2: The difference from the above embodiment is that the hinge arm is an L-shaped arm, with the free end of the L-shape hinged to the hinge baffle, which is a fan-shaped plate. The L-shaped arm effectively bypasses the limiting hole, and the components are rationally arranged.

[0024] The aforementioned specific structure ensures that the limiting component can be used and operated efficiently and conveniently.

[0025] Example 3: The difference from the above embodiment is that the hinge arm is provided with a limiting plate 521 that can abut against the top of the secondary ladder when the handrail is erected on the top of the secondary ladder, so that it cooperates with the limiting post inserted into the limiting hole to make the handrail stand stably on the top of the secondary ladder.

[0026] Example 4: The difference from the above embodiment lies in that when the secondary ladder section is stacked with the main ladder section, the steps on the secondary ladder section are vertically offset from the steps on the main ladder section. This ensures that the secondary ladder section can be folded closer together when stacked with the main ladder section, preventing incomplete stacking due to step collisions. It boasts strong overall integrity, facilitating storage, transportation, and use.

[0027] Example 5: The difference from the above embodiment is that a handle 6 is provided in the middle of the outer side of the secondary ladder. The handle is provided so that the user can easily flip the secondary ladder during use to prevent injury to the hand.

[0028] Example 6: The difference from the above embodiment lies in the fact that the upper middle part of the main ladder section is provided with a support leg 7. When the ladder is not in use, to prevent its upper end from extending beyond the guardrail and into the road surface after leaning against it, this application also designs a support leg structure. This limits the distance and position to ensure the top of the ladder does not extend beyond the guardrail, and also allows the secondary ladder section to be supported by a flip-up frame onto the road surface inside the guardrail when needed. The support leg can be designed to be hinged to the ladder posts of the main ladder section for easy folding when not in use.

[0029] This application can be pre-installed on the outside of the highway, for example, by placing the main ladder against the outside of the guardrail, or by placing the support legs 7 close to the outside of the guardrail and supporting the main ladder. When in use, the user can flip the secondary ladder around the top hinge point towards the inside of the guardrail so that the bottom of the secondary ladder rests on the road surface for support. Then, the handrail resting on the secondary ladder can be folded upwards around the top hinge point of the secondary ladder. After folding into place, the handrail is positioned by the limiting component to ensure that the handrail stands on the top of the secondary ladder. The user can then grab the handrail and step on the steps to climb over and move to the safe outside of the guardrail.

[0030] This application allows for 300-degree rotation and folding (easy to open and close, folds over when not in use, and is easy to unfold when needed, without affecting road traffic safety), and has a reasonable structure (handrails, ladder width, load-bearing capacity, reflectivity, and warnings are all reasonable). When unfolded, it forms a handrail + ladder system. (When not in use, it is folded to the outside; when in use, it is folded to the inside).

[0031] Following a highway accident, drivers and passengers often become stranded in the lane due to difficulties navigating, significantly increasing the risk of secondary accidents. Studies show that the mortality rate from secondary accidents can be more than three times that of the initial accident. This application's design aims to help drivers and passengers proactively and quickly avoid hazards, reducing the probability of injury or death.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A ladder for climbing over a highway side guardrail, characterized in that: It includes a main ladder (1) located outside the guardrail and a secondary ladder (2) hinged to the top of the main ladder and foldable to the road surface inside the guardrail. The top of the secondary ladder is hinged with a handrail (3) that can be erected on the top of the secondary ladder. The base of the handrail is connected with a limiting component (5) for positioning the handrail. When the secondary ladder is superimposed on the main ladder, the handrail is located on the side of the secondary ladder closer to the main ladder.

2. The highway side guardrail climbing ladder according to claim 1, characterized in that: When the secondary stair section overlaps with the main stair section, the secondary stair section and the handrail are located outside the main stair section, and the handrail is attached to the secondary stair column (4) of the secondary stair section, which is parallel to the secondary stair column.

3. The highway side guardrail climbing ladder according to claim 1, characterized in that: The limiting assembly includes a hinged baffle (51) fixed to the top of the secondary stair section, a hinged arm (52) fixed to the end of the handrail, and an elastic limiting plate (53) hinged to the end of the handrail. The hinged arm and the elastic limiting plate are respectively located on both sides of the hinged baffle, and the arm end of the hinged arm is hinged to the hinged baffle. A limiting hole (511) is provided on the hinged baffle, and a limiting post (531) that can be inserted into the limiting hole is provided at the end of the elastic limiting plate.

4. The highway side guardrail climbing ladder according to claim 3, characterized in that: When the handrail is erected on the top of the secondary staircase, the middle part of the elastic limiting plate is hinged to the root of the handrail, the lower end is provided with a limiting post, and the upper end is connected to the side wall of the handrail through a spring sheet (54).

5. The highway side guardrail climbing ladder according to claim 4, characterized in that: The hinge arm is an L-shaped arm, and the free end of the L-shape is hinged to the hinge stop plate, which is a fan-shaped plate.

6. The highway side guardrail climbing ladder according to claim 5, characterized in that: The hinge arm is provided with a limiting plate (521) that can abut against the top of the secondary ladder when the handrail is erected on the top of the secondary ladder, so that it cooperates with the limiting post inserted into the limiting hole to make the handrail stand stably on the top of the secondary ladder.

7. The highway side guardrail climbing ladder according to claim 1, characterized in that: When the secondary ladder section overlaps with the main ladder section, the steps on the secondary ladder section are vertically offset from the steps on the main ladder section.

8. The highway side guardrail climbing ladder according to claim 1, characterized in that: A handle (6) is provided on the middle of the outer side of the secondary staircase.

9. The highway side guardrail climbing ladder according to claim 1, characterized in that: The upper part of the main staircase is provided with support legs (7).

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