Highway guardrail crossing step ladder

Abstract

The utility model relates to the technical field of expressway maintenance equipment. An expressway guardrail crossing step ladder comprises a rack platform, and one side of the rack platform is fixedly connected with a first ladder assembly; the first ladder assembly is obliquely mounted; a foldable second ladder assembly is arranged on the other side of the rack platform; the second ladder assembly comprises four ladder rods and a plurality of pedals located among the four ladder rods, every two ladder rods are distributed at intervals in a front-back mode, and at least two vertical supporting pieces distributed at intervals from top to bottom are rotationally arranged between every two ladder rods located on the same side; a folding frame is arranged below the rack platform, and the folded second ladder frame is arranged in the folding frame in a drawer mode; ladder beams are arranged on the two sides of the pedal on the top in the plurality of pedals; the tops of the ladder rods are hinged with the ladder beams; the ladder beams are in sliding connection with the folding frames. The problem that in the prior art, it is inconvenient to climb over a fence net in the highway maintenance process can be solved, and constructors are effectively prevented from being injured in the climbing-over process.

Description

Technical Field

[0001] The utility model relates to the technical field of highway maintenance equipment, in particular to a step ladder spanning a highway guardrail. Background Art

[0002] The post-maintenance of expressways is an important task to ensure the safety of expressways. Since most of the expressways are equipped with fences, it is necessary to climb over the guardrails to maintain the slopes, drainage ditches and bridge substructures during the maintenance process. However, there are the following safety hazards during the maintenance process: First, the thickness of the expressway guardrail is generally 3 to 4 mm, which is easy to cut the palm during the climbing project; second, the outer wall of the corrugated plate is wavy, which is easy to slip during the stepping process. There are also ladders used to cross the guardrails in the prior art. For example, Chinese utility model patent CN215057044U discloses a highway guardrail climbing device, including two first telescopic legs, a first telescopic leg with a second telescopic rod slidably connected to a surface, a second telescopic rod with a third telescopic rod slidably connected to a surface, and a third telescopic rod with a fourth telescopic rod slidably connected to a surface, the first telescopic leg, the second telescopic rod and the third telescopic rod are fixedly connected to two opposite surfaces with pedals, a fourth telescopic rod with a fixedly connected surface, a connecting rod with a fixedly connected two opposite surfaces, a connecting rod with a plurality of limit plates and fixed buckles fixedly connected to a surface, and a tie strap fixedly installed on the side of the connecting rod. The utility model is provided with a fixing buckle, a binding strap and a second buckle, so that the device can be conveniently clamped on the highway guardrail when in use, and the user can conveniently climb over the highway guardrail. However, when the existing highway guardrail climbing device is used, the ladder is easy to move left and right against the guardrail, and the ladder is only provided on one side of the guardrail, which has the problem of uneven ground, affecting the placement of the ladder and inconvenience in use, and also has safety hazards. Therefore, how to provide a highway guardrail climbing device to help construction workers safely and quickly climb over the highway guardrail is a technical problem that technicians in this field need to solve urgently. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems raised in the above-mentioned background technology, and provides a step ladder for crossing the guardrail of a highway. The step ladder has a reasonable structure and can solve the problem of the inconvenience of climbing over the fence net during highway maintenance in the prior art, and effectively avoid injuries to construction workers during the climbing process.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] A highway guardrail spanning step ladder comprises a frame platform, one side of the frame platform is fixedly connected to a first ladder frame; the first ladder frame is installed at an angle; the other side of the frame platform is provided with a foldable second ladder frame; the second ladder frame comprises four ladder rods and a plurality of pedals located between the four ladder rods, the four ladder rods are spaced apart in pairs front and back, and at least two vertical support members spaced apart from top to bottom are rotatably arranged between the two ladder rods located on the same side; a folding frame is provided below the frame platform, and the folded second ladder frame is arranged in the folding frame in a drawer-like manner; ladder beams are provided on both sides of the pedals located at the top among the plurality of pedals; the top of the ladder rod is hingedly connected to the ladder beam; the ladder beam is slidably connected to the folding frame.

[0006] As a further improvement of the utility model, the folding frame is composed of two guide rails and a connecting rod located between the two guide rails, and the two facing surfaces of the two guide rails are provided with sliding grooves for accommodating the folded second ladder frame.

[0007] As a further improvement of the present invention, the surface of the pedal is integrally formed with anti-slip patterns.

[0008] As a further improvement of the present invention, a limiting plate for limiting the position of the ladder beams is connected between the ladder beams.

[0009] As a further improvement of the utility model, each ladder rod is rotationally connected to each pedal.

[0010] As a further improvement of the utility model, a switch handle is provided at the exit of the folding frame.

[0011] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0012] The utility model provides a highway guardrail crossing step ladder, which can help construction workers climb over the highway guardrail, and can also prevent construction workers from being injured during the climbing process, thereby ensuring the safety of construction workers. By arranging a first ladder frame on one side of the frame platform, and arranging a foldable second ladder frame on the other side of the frame platform, it can adapt to the highway guardrail and achieve stable placement. When in use, the frame platform and the first ladder frame are located on one side of the guardrail, and the second ladder frame is opened and made to cross the other side of the guardrail. On the one hand, it is convenient for construction workers to quickly climb over the guardrail. On the other hand, the second ladder frame added to the frame platform can be placed across the other side of the guardrail after being unfolded, and can be stably hung on the highway guardrail. After the second ladder frame is closed, it is arranged in a drawer-like manner in the folding frame without occupying more external space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a highway guardrail crossing step in the utility model;

[0014] Figure 2 It is a structural schematic diagram of the folding frame of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the second ladder frame of the utility model after folding.

[0016] Among them, the markings in the attached drawings are: 1, rack platform; 2, first ladder frame; 3, second ladder frame; 4, ladder rod; 5, pedal; 6, vertical support member; 7, folding frame; 8, ladder beam; 9, guide rail; 10, connecting rod; 11, slide groove; 12, anti-slip pattern; 13, limit plate; 14, switch handle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] See also Figure 1-Figure 3A step ladder for crossing a highway guardrail comprises a frame platform 1, the height of the frame platform 1 is slightly higher than the height of the highway guardrail, a first ladder frame 2 is fixedly connected to one side of the frame platform 1; the first ladder frame 2 is installed obliquely; a foldable second ladder frame 3 is provided on the other side of the frame platform 1; the second ladder frame 3 comprises four ladder rods 4 and a plurality of pedals 5 located between the four ladder rods 4, where four is not a mandatory option, and six or eight can be provided, as long as the second ladder frame 3 can be folded, the four ladder rods 4 are symmetrically spaced in pairs, and the ladder rods 4 located on the same side are arranged in pairs. At least two vertical support members 6 (pins may be used) are rotatably arranged between the two ladder rods 4 and are spaced apart from top to bottom, and each of the ladder rods 4 is rotatably connected to each of the pedals 5 (pins may be used); a folding frame 7 is arranged below the frame platform 1, and a accommodating space is formed between the frame platform 1 and the folding frame 7, and the folded second ladder frame 3 is arranged in the folding frame 7 in a drawer-like manner; ladder beams 8 are arranged on both sides of the pedals 5 located at the top among the multiple pedals 5; the top of the ladder rod 4 is hingedly connected to the ladder beam 8; the ladder beam 8 is slidably connected to the folding frame 7.

[0020] The folding frame 7 is composed of two guide rails 9 and a connecting rod 10 located between the two guide rails 9. The two facing surfaces of the two guide rails 9 are provided with sliding grooves 11 for accommodating the folded second ladder frame 3 so that the second ladder frame 3 can be pulled out.

[0021] Preferably, the surface of the pedal 5 is integrally formed with anti-skid patterns 12, which can prevent construction workers from slipping when climbing, thereby increasing safety.

[0022] A limiting plate 13 for limiting the position of the ladder beams 8 is also connected between the ladder beams 8. The connecting rod 10 is located near the exit of the folding frame 7. The height of the limiting plate 13 is greater than the height of the connecting rod 10. When the second ladder frame 3 is pulled outward, the limiting plate 13 limits the second ladder frame 3 when it reaches the connecting rod 10.

[0023] A switch handle 14 is provided at the exit of the folding frame 7 , and when the second ladder frame 3 is folded in the folding frame 7 , the second ladder frame 3 can be locked to prevent the second ladder frame 3 from shaking.

[0024] The utility model provides a method for using a highway guardrail crossing step ladder as follows: a frame platform 1 and a first ladder frame 2 are placed on one side of the guardrail, a switch handle 14 is opened to pull a second ladder frame 3 out of a folding frame 7, the second ladder frame 3 is made to cross the other side of the guardrail and the second ladder frame 3 is opened, and construction workers can quickly climb over the guardrail through the highway guardrail crossing step ladder, and after use, the second ladder frame 3 is folded and pushed into the folding frame 7, and the switch handle 14 is closed.

[0025] The above description is a detailed description of the preferred feasible embodiment of the utility model, but the embodiment is not used to limit the scope of the patent application of the utility model. All equivalent changes or modified changes completed under the technical spirit suggested by the utility model should fall within the patent scope covered by the utility model.

Claims

1. A highway guardrail step ladder, comprising a frame platform (1), characterized in that: A first ladder frame (2) is fixedly connected to one side of the frame platform (1); the first ladder frame (2) is installed in an inclined manner; a foldable second ladder frame (3) is provided on the other side of the frame platform (1); the second ladder frame (3) comprises four ladder rods (4) and a plurality of pedals (5) located between the four ladder rods (4); the four ladder rods (4) are arranged in pairs and spaced from front to back; at least two vertical support members (6) spaced from top to bottom are rotatably arranged between two ladder rods (4) located on the same side; a folding frame (7) is provided below the frame platform (1); the folded second ladder frame (3) is arranged in the folding frame (7) in a drawer-like manner; ladder beams (8) are provided on both sides of the pedals (5) located at the top among the plurality of pedals (5); the top of the ladder rod (4) is hingedly connected to the ladder beam (8); the ladder beam (8) is slidably connected to the folding frame (7).

2. The highway guardrail step-over ladder according to claim 1, characterized in that: The folding frame (7) is composed of two guide rails (9) and a connecting rod (10) located between the two guide rails (9), and the two facing surfaces of the two guide rails (9) are provided with sliding grooves (11) for accommodating the second ladder frame (3) after folding.

3. The highway guardrail step-over ladder according to claim 1 is characterized by: The surface of the pedal (5) is integrally formed with anti-slip grooves (12).

4. The highway guardrail step-over ladder according to claim 1, characterized in that: A limiting plate (13) for limiting the position of the ladder beams (8) is also connected between the ladder beams (8).

5. The highway guardrail step-over ladder according to claim 1 is characterized by: Each ladder rod (4) is rotationally connected to each pedal (5).

6. The highway guardrail step-over ladder according to claim 1, characterized in that: A switch handle (14) is provided at the exit of the folding frame (7).

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