A ramp with a telescoping boarding ladder

Abstract

The utility model provides a kind of telescopic boarding ladder road roller, belong to boarding ladder technical field, including road roller, the side of road roller is fixedly installed with side frame, the surface of side frame is slidably provided with boarding mechanism, the boarding mechanism includes outer frame box, the surface of the side frame is slidably provided with outer frame box, three treading rods are arranged in the inside of outer frame box, the side of outer frame box movably is provided with support frame, the both ends of treading rod are respectively connected outer frame box with support frame by pivot, the bottom of side frame is provided with guiding component.The boarding mechanism of the utility model can be completely slidably housed, the outer frame box is flush with the body, so that the appearance is neat when road roller is working and transporting, simultaneously, three treading rods can be completely folded and housed in the inside of outer frame box, and only one action is needed, and the whole system is automatically completed swing positioning of support frame and synchronous unfolding of all treading rods under the guidance of guiding component.

Description

Technical Field

[0001] This utility model belongs to the field of loading ladder technology, specifically relating to a road roller with a retractable loading ladder. Background Technology

[0002] Because of the high chassis of vehicles such as road rollers, it is inconvenient for operators to get on and off. To solve this problem, traditionally, a fixed loading ladder is welded to the side of the equipment or an external simple ladder is installed.

[0003] For example, Chinese utility model patent (CN207607426U) discloses a tilting boarding ladder. The overall structure of the tilting ladder consists of a fixed ladder, a rotating ladder, and a tilting mechanism. The fixed ladder consists of a fixed plate and steps, which serve to fix it in place; the rotating ladder consists of a movable plate and steps, which connect to the fixed ladder and reduce the height of the steps from the ground. The tilting mechanism consists of end caps, bushings, shafts, and other parts to ensure that the ladder can rotate normally. The tilting ladder is folded into the skirt panel through the tilting mechanism, which has the advantages of small space occupation, neat appearance, and convenient operation. The tilting ladder unfolds outward through the tilting mechanism, and the rotating ladder unfolds through the pivot, reducing the distance between the ladder and the ground and facilitating people to get on and off vehicles.

[0004] In summary, this solution divides the ladder into a fixed ladder and a rotating ladder, storing them within the vehicle's side skirts via a flipping mechanism. While this design improves the neatness of the appearance after storage, it is essentially still a flip-and-unfold mode. The ladder structure requires a significant external rotation space during unfolding and storage, and the overall length and shape of the unfolded ladder are fixed. For construction workers who need to frequently get on and off the vehicle, there is still room for improvement in convenience. Furthermore, although its stored state is hidden inside the vehicle body, it places specific requirements on the structural design of the vehicle's interior space, limiting its versatility and integration. Utility Model Content

[0005] The purpose of this invention is to provide a road roller with a retractable loading ladder, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A road roller with a retractable loading ladder, comprising a road roller, A side frame is fixedly installed on the side of the road roller, and a loading mechanism is slidably provided on the surface of the side frame; The boarding mechanism includes an outer frame box that is slidably disposed on the surface of the side frame. Three foot pedals are arranged inside the outer frame box. A support frame is movably disposed on the side of the outer frame box. The two ends of each foot pedal are connected to the outer frame box and the support frame via pivots. The foot pedals can be folded and stored inside the outer frame box. A guide component is disposed at the bottom of the side frame, and the guide component cooperates with the support frame.

[0007] As a preferred embodiment of this utility model, the road roller is equipped with a cylinder inside, and the output end of the cylinder is fixedly connected to the outer frame box.

[0008] As a preferred embodiment of this utility model, a guide rod is provided on the side of the outer frame away from the support frame, and the surface of the guide rod is movably inserted into the inside of the road roller.

[0009] In a preferred embodiment of this utility model, the guide assembly includes a guide slope, which is fixedly installed at the bottom of the side frame. A support base is provided at the bottom end of the guide slope, and the bottom end of the support frame is slidably disposed on the surfaces of the guide slope and the support base.

[0010] In a preferred embodiment of this utility model, a sliding groove is provided at the top of the side frame, and a slider is fixedly installed at the top of the outer frame box, with the surface of the slider slidably mounted in the sliding groove.

[0011] As a preferred embodiment of this utility model, three limiting plates are evenly arranged on the inner wall of the outer frame box, and the three limiting plates are respectively installed below the three foot pedals.

[0012] As a preferred embodiment of this utility model, a distance of ten centimeters is reserved between the surface of the side frame and the outer frame box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the loading mechanism can be completely slidably stored, and the outer frame box is flush with the vehicle body, making the road roller look neat and without any protruding parts during operation and transportation. This completely solves the problems of space occupation, obstruction of operation, and violation of transportation dimensions of traditional welded fixed ladders. At the same time, the three foot levers can be completely folded and stored inside the outer frame box, with a compact structure, avoiding the risk of bumps and damage and scratches to personnel caused by exposed ladders. Moreover, with just one action, the entire system automatically completes the swing positioning of the support frame and the synchronous unfolding of all foot levers under the guidance of the guide component. This saves a lot of time and energy compared with traditional folding ladders that require step-by-step installation, unfolding, and locking, and is particularly suitable for construction environments that require frequent loading and unloading. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments 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. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the boarding mechanism structure of this utility model; Figure 4 This is a schematic diagram of the interior of the outer frame box of this utility model; Figure 5 This utility model Figure 4 Enlarged view of point B in the middle.

[0015] In the diagram: 1. Road roller; 2. Side frame; 3. Boarding mechanism; 4. Cylinder; 5. Guide rod; 6. Outer frame box; 7. Step bar; 8. Support frame; 9. Limiting plate; 10. Slider; 11. Sliding groove; 12. Guide assembly; 13. Guide slope; 14. Support base. Detailed Implementation

[0016] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] Example Reference Figure 1-5 This is an embodiment of the present utility model, which provides a road roller with a retractable loading ladder, including a road roller 1; A side frame 2 is fixedly installed on the side of the road roller 1, and a loading mechanism 3 is slidably installed on the surface of the side frame 2; The boarding mechanism 3 includes an outer frame box 6, which is slidably mounted on the surface of the side frame 2. Three foot pedals 7 are arranged inside the outer frame box 6. A support frame 8 is movably mounted on the side of the outer frame box 6. The two ends of the foot pedals 7 are connected to the outer frame box 6 and the support frame 8 respectively through a pivot. The foot pedals 7 can be folded and stored inside the outer frame box 6. A guide component 12 is provided at the bottom of the side frame 2, and the guide component 12 cooperates with the support frame 8.

[0020] When in use, the outer frame box 6, the folded foot pedals 7, and the support frame 8 inside the loading mechanism 3 slide towards the rear of the roller 1 to achieve complete storage without occupying external space. During this process, the support frame 8, guided by the guide component 12, moves towards the roller 1. At the same time, all the foot pedals 7 rotate synchronously around their two ends of the pivot, completely folding up like a folding fan or scissors and lying flat inside the outer frame box 6 to form a compact whole. When needed, the entire loading mechanism 3 is slid outward along the side frame 2. During the sliding process, the guide component 12 fixed at the bottom of the side frame 2 begins to interact with the support frame 8. As the sliding continues, the guide component 12 forces the support frame 8 to gradually swing outward and extend downward. The movement of the support frame 8, through the pivots at both ends of the foot pedals 7, drives all the foot pedals 7 to unfold synchronously and equidistantly like a scissor mechanism, changing from a folded state to a series of horizontal, step-like steps. Finally, the bottom of the support frame 8 contacts the ground, forming a stable distal support point.

[0021] In summary, the loading mechanism 3 can be completely slidably stored, and the outer frame box 6 is flush with the vehicle body, making the road roller 1 look neat and without any protruding parts during operation and transportation. This completely solves the problems of space occupation, obstruction of operation, and violation of transportation dimensions caused by traditional welded fixed ladders. At the same time, the three foot pedals 7 can be completely folded and stored inside the outer frame box 6, with a compact structure, avoiding the risk of bumps and damage and scratches to personnel caused by exposed ladders.

[0022] Furthermore, the road roller 1 is equipped with a cylinder 4 inside, and the output end of the cylinder 4 is fixedly connected to the outer frame box 6.

[0023] In use, by controlling the air circuit, the extension and retraction of the cylinder 4 directly drives the entire boarding mechanism 3 to slide linearly along the side frame 2, thereby realizing the automatic unfolding and retraction of the boarding ladder. The manual push-pull sliding is upgraded to power drive. Users can control the unfolding and retraction of the ladder by simply pressing a button or switching it. The operation is extremely labor-saving and convenient, significantly improving the user experience and work efficiency.

[0024] Furthermore, a guide rod 5 is provided on the side of the outer frame box 6 away from the support frame 8, and the surface of the guide rod 5 is movably inserted into the inside of the road roller 1.

[0025] When in use, as the outer frame box 6 slides, the guide rod 5 moves accordingly, and its rod body is movably inserted into the guide hole inside the roller 1 vehicle body. This is equivalent to providing sliding constraint at a position away from the side frame 2, which greatly enhances the anti-torsion and anti-lateral bending ability of the loading mechanism 3 during the extension and retraction process, and prevents jamming or deformation due to uneven force.

[0026] Furthermore, the guide assembly 12 includes a guide slope 13, which is fixedly installed at the bottom of the side frame 2. A support base 14 is provided at the bottom end of the guide slope 13, and the bottom end of the support frame 8 is slidably disposed on the surface of the guide slope 13 and the support base 14.

[0027] In use, the guide ramp 13 is a wedge-shaped block with a specific slope fixed to the bottom of the side frame 2. When the ladder is retracted, the bottom end of the support frame 8 is located at the top of the guide ramp 13. When the outer frame box 6 slides down, the bottom end of the support frame 8 is pushed away from the support base 14 and slides along the slope of the guide ramp 13. This slope design forces the support frame 8 to gradually swing and unfold away from the vehicle body while moving downwards, until it is fully unfolded and its bottom end is located on the surface of the support base 14.

[0028] Furthermore, a sliding groove 11 is provided at the top of the side frame 2, and a slider 10 is fixedly installed at the top of the outer frame box 6. The surface of the slider 10 is slidably installed in the sliding groove 11.

[0029] In use, the sliding groove 11 defines the movement path of the slider 10, forming the most important and load-bearing sliding pair between the boarding mechanism 3 and the vehicle body. The combination of the sliding groove 11 and the slider 10 is the main load-bearing structure that bears the weight of the ladder and the user, while also providing the main linear motion guide.

[0030] Furthermore, three limiting plates 9 are evenly arranged on the inner wall of the outer frame box 6, and the three limiting plates 9 are respectively installed below the three foot pedals 7.

[0031] During use, the three limiting plates 9 are fixedly installed on the inner wall of the outer frame box 6, and are precisely located below the three pedal rods 7 when they are fully extended to the horizontal state. When the pedal rod 7 is extended to the position, its lower surface will contact the corresponding limiting plate 9. As a rigid mechanical limit, the limiting plate 9 prevents the pedal rod 7 from continuing to rotate downward when bearing the weight of the human body, ensuring that all pedals remain absolutely horizontal and stable after being extended. This eliminates the problem of pedal sinking or shaking caused by the gap or deformation of the linkage mechanism, and is a key guarantee for safety.

[0032] Furthermore, a 10-centimeter distance is reserved between the surface of the side frame 2 and the outer frame box 6.

[0033] When in use, a distance of about ten centimeters is reserved, which is just enough to accommodate the forefoot of an adult, making it easy for the operator to step on the pedal 7.

[0034] 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A road roller with a retractable loading ladder, characterized in that: Including road rollers (1); The side of the road roller (1) is fixedly installed with a side frame (2), and a loading mechanism (3) is slidably provided on the surface of the side frame (2). The boarding mechanism (3) includes an outer frame box (6), which is slidably disposed on the surface of the side frame (2). Three foot pedals (7) are arranged inside the outer frame box (6). A support frame (8) is movably disposed on the side of the outer frame box (6). The two ends of the foot pedals (7) are respectively connected to the outer frame box (6) and the support frame (8) through a pivot. The foot pedals (7) can be folded and stored inside the outer frame box (6). A guide component (12) is provided at the bottom of the side frame (2), and the guide component (12) cooperates with the support frame (8).

2. A road roller with a retractable loading ladder according to claim 1, characterized in that: The roller (1) is equipped with a cylinder (4) inside, and the output end of the cylinder (4) is fixedly connected to the outer frame box (6).

3. A road roller with a retractable loading ladder according to claim 1, characterized in that: A guide rod (5) is provided on the side of the outer frame box (6) away from the support frame (8), and the surface of the guide rod (5) is movably inserted into the inside of the road roller (1).

4. A road roller with a retractable loading ladder according to claim 1, characterized in that: The guide assembly (12) includes a guide slope (13), which is fixedly installed at the bottom of the side frame (2). A support base (14) is provided at the bottom end of the guide slope (13), and the bottom end of the support frame (8) is slidably disposed on the surface of the guide slope (13) and the support base (14).

5. A road roller with a retractable loading ladder according to claim 1, characterized in that: The top of the side frame (2) is provided with a sliding groove (11), and the top of the outer frame box (6) is fixedly installed with a slider (10), and the surface of the slider (10) is slidably installed in the sliding groove (11).

6. A road roller with a retractable loading ladder according to claim 1, characterized in that: The inner wall of the outer frame box (6) is evenly provided with three limiting plates (9), and the three limiting plates (9) are respectively installed below the three foot pedals (7).

7. A road roller with a retractable loading ladder according to claim 1, characterized in that: A ten-centimeter distance is reserved between the surface of the side frame (2) and the outer frame box (6).

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