Portable hurdle ladder for expressway

Abstract

The portable hurdle ladder comprises an inverted-U-shaped ladder frame body composed of a left ladder frame, a right ladder frame and a connecting frame, each of the left ladder frame and the right ladder frame comprises two vertical rods, the two vertical rods are hinged to the two sides of one end of a pedal, and the pedal can be retracted into an inner groove space between the two vertical rods in a pivoted mode or pivoted to the horizontal state. And when the ladder frame pivots to a horizontal state, the pedals are pulled or supported and fixed through limiting pieces arranged on the left ladder frame and the right ladder frame. The wave-shaped guardrail crossing mode can be improved, physical output of personnel is reduced, personal safety is improved, inspection efficiency is improved, inspection cost is reduced, safe crossing of the side wave-shaped guardrail is achieved, operation is convenient, and stability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway maintenance, and particularly relates to a convenient hurdle ladder for highways. Background Art

[0002] With the rapid development of the social economy and the continuous advancement of infrastructure construction, the scale of various highway engineering projects is expanding. During the construction and operation of these projects, slope stability issues are often encountered due to the impact of natural disasters such as heavy rain. To ensure the safe operation of the highway, the maintenance unit and the design unit must conduct a joint inspection of the entire line and implement corresponding emergency and permanent treatment measures. This creates the need to cross the side guardrail from the emergency lane to enter the slope. In addition, highway maintenance units also perform daily maintenance on the road, including maintenance of roadside facilities and cleaning and maintenance of the road drainage system, to ensure road safety and comfort. Frequently crossing the guardrail back and forth is neither safe nor convenient.

[0003] Typically, the top of a guardrail is 80 to 110 cm above the road surface, making it difficult for people to cross. This, to a certain extent, affects the efficiency of inspection, maintenance, and repair of roadbed slopes and isolation fences, and also fails to effectively guarantee the personal safety of maintenance workers. In view of this, the present invention combines years of design and use experience in related fields with strong professional knowledge to design and manufacture a convenient highway hurdle ladder to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a convenient highway hurdle ladder, which can improve the way of crossing the corrugated guardrail, reduce the physical exertion of personnel, improve personal safety, improve inspection efficiency, reduce inspection costs, and achieve safe crossing of the side corrugated guardrail. It is easy to operate and has good stability.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a convenient highway hurdle ladder, including an inverted U-shaped ladder frame body composed of a left ladder frame, a right ladder frame and a connecting frame, the left ladder frame and the right ladder frame each including two vertical rods, the two vertical rods being hingedly connected to the two sides of one end of the pedal, the pedal can be pivoted and retracted into the inner groove space between the two vertical rods, or pivoted to a horizontal state. When pivoted to the horizontal state, the pedal is pulled or supported and fixed by the limit members arranged on the left ladder frame and the right ladder frame.

[0006] Furthermore, the limiting member is a zipper, one end of the zipper is fixed to the upper part of the vertical rod, and the other end of the zipper is fixed to a position of the pedal away from the hinge point.

[0007] Furthermore, a through hole is provided on the outer side of the vertical rod, and a pin hole is provided on the outer side of the pedal. When the pedal is retracted into the inner groove space between the two vertical rods, the through hole and the pin hole are aligned, and a pin can be inserted to fix it.

[0008] Furthermore, armrests are provided on the front and rear sides of the connecting frame.

[0009] Furthermore, the armrest is arc-shaped.

[0010] Furthermore, an anti-skid plate is provided on the tread of the pedal, and anti-skid protrusions are provided on the anti-skid plate.

[0011] Furthermore, the ladder frame body is made of high-strength aluminum alloy material.

[0012] The utility model has the following beneficial effects:

[0013] 1. The hurdle ladder can be quickly unfolded and installed, and can smoothly complete the crossing of the side guardrail. It is easy to operate and has good stability.

[0014] 2. The entire device can be installed by one person, and the user can easily cross the guardrail by following the steps. After use, the ladder can be removed, folded and loaded onto a truck for construction in the next work area, thus reducing labor intensity and ensuring safety.

[0015] 3. The pedals can be folded up with simple operation, which greatly reduces the volume and is convenient for carrying and storage.

[0016] 4. Simple operation, no complicated training is required to master the usage method, and it is convenient for different personnel to operate;

[0017] 5. A circular arc handrail is set at the top of the hurdle ladder. The handrail can be used for easy grasping when climbing over, and can also prevent hands from being pinched during installation;

[0018] 6. This device is not only suitable for specific work scenarios, but can also play a role in various occasions, such as emergency rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view of the utility model in the unfolded state;

[0020] Figure 2 It is a side view of the utility model in the folded state.

[0021] In the figure: 1. Ladder frame body, 2. Pedal, 3. Latch, 4. Zipper, 5. Anti-slip plate, 6. Handrail. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, a convenient highway hurdle ladder of the present invention is described in further detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, a convenient highway hurdle ladder includes an inverted U-shaped ladder frame body 1 composed of a left ladder frame, a right ladder frame and a connecting frame. The left ladder frame and the right ladder frame each include two vertical rods, and the two vertical rods are hingedly connected to the two sides of one end of a pedal 2. The width of the pedal 2 is smaller than the width of the inner groove of the ladder frame body 1. The pedal 2 can be pivoted and retracted into the inner groove space between the two vertical rods, or pivoted to a horizontal state. When pivoted to the horizontal state, the pedal 2 is pulled or supported by the limit members set on the left ladder frame and the right ladder frame.

[0024] In this embodiment, the ladder frame body 1 is made of high-strength aluminum alloy, which is lightweight, strong, and corrosion-resistant. The left and right ladder frames also include two longitudinal bars, which together form a U-shaped frame. The overall structure is strong and not prone to deformation.

[0025] The pedal 2, which is hingedly connected to the two vertical rods, is pulled or supported by a limiter. When the limiter supports the pedal 2, a rigid support rod can be used. When the limiter pulls the pedal 2, a flexible zipper 4 can be used. One end of the zipper 4 is fixed to the upper part of the vertical rod, and the other end of the zipper 4 is fixed to a position of the pedal 2 away from the hinge point.

[0026] Furthermore, the vertical bars are provided with through-holes, and the outer side of the step 2 is provided with a pin hole. When the step 2 is retracted into the inner groove space between the two vertical bars, the through-holes align with the pin holes, allowing the insertion of a latch 3 to secure the ladder. The various components of the hurdle ladder utilize a quick-connect mechanism, allowing for quick assembly and disassembly without the use of tools, thus improving efficiency. The folded hurdle ladder can be easily stored in a vehicle trunk, ready for use at any time.

[0027] The pedal 2 includes a bottom frame, a tread above the bottom frame, an anti-skid plate provided on the tread, and anti-skid bumps on the anti-skid plate. The anti-skid bumps can increase the friction between the sole of the foot and the tread, thereby improving the safety of use.

[0028] The connecting frame is connected to the upper ends of the left and right ladder frames, and is provided with arc-shaped handrails 6 on the front and rear sides of the connecting frame. The handrails 6 are arranged in an arc shape. Compared with right-angled or other shaped handrails, the arc-shaped handrails have a larger contact area with the palm when people grasp it, which can reduce local pressure and make the hand feel more comfortable.

[0029] When in use, first hold the ladder body 1 and the handrail 6, hang the top platform of the ladder body 1 above the corrugated guardrail, then slowly lower the ladder body 1 so that the corrugated beam is inserted into the slot of the ladder body 1, pull out the pin 3 that fixes the pedal 2, lower the pedal 2, and use the zipper 4 to pull the pedal 2 to keep it in a balanced state.

[0030] Check whether the slot of the ladder frame body 1 is firmly stuck to the corrugated guardrail to ensure the stability of the hurdle ladder. The user holds the handrail 6 and steps on the pedals 2 with both legs in succession to safely climb over the corrugated guardrail.

[0031] The entire device can be operated and installed by one person. Simply hold the main ladder frame 1 and handrail 6 and attach them to the corrugated guardrail to quickly complete the hurdle ladder installation. It's easy to operate and offers excellent stability. After use, simply fold the steps 2 in reverse, insert the locking pin 3, and the zipper 4 will automatically retract. The main ladder frame 1 can then be removed from the guardrail, reducing labor intensity and ensuring safety.

[0032] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A convenient hurdle ladder for highways, characterized in that: The invention comprises an inverted U-shaped ladder frame body (1) composed of a left ladder frame, a right ladder frame and a connecting frame. The left ladder frame and the right ladder frame each comprise two vertical rods. The two vertical rods are hingedly connected to both sides of one end of a pedal (2). The pedal (2) can be pivotally retracted into the inner groove space between the two vertical rods, or pivoted to a horizontal state. When pivoted to the horizontal state, the pedal (2) is pulled or supported by a limiting member arranged on the left ladder frame and the right ladder frame.

2. The convenient highway hurdle ladder according to claim 1, characterized in that: The limiting member is a zipper (4), one end of the zipper (4) is fixed to the upper part of the vertical rod, and the other end of the zipper (4) is fixed to a position of the pedal (2) away from the hinge point.

3. The convenient highway hurdle ladder according to claim 1, characterized in that: A through hole is provided on the outside of the vertical rod, and a pin hole is provided on the outside of the pedal (2). When the pedal (2) is retracted into the inner groove space between the two vertical rods, the through hole and the pin hole are aligned, and a pin (3) can be inserted to fix it.

4. The convenient highway hurdle ladder according to claim 1, characterized in that: Handrails (6) are provided on the front and rear sides of the connecting frame.

5. The convenient highway hurdle ladder according to claim 4, characterized in that: The handrail (6) is in an arc shape.

6. The convenient highway hurdle ladder according to claim 1, characterized in that: An anti-skid plate (5) is provided on the tread of the pedal (2), and anti-skid protrusions are provided on the anti-skid plate (5).

7. The convenient highway hurdle ladder according to any one of claims 1 to 6, characterized in that: The ladder frame body (1) is made of high-strength aluminum alloy material.

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