An adjustable ladder

Abstract

The utility model provides a kind of adjustable ladder, including pull rod, pedal assembly, guide rail plate, ladder beam and bottom positioning plate, pedal assembly includes multiple blocks of pattern plate being set in echelon, guide rail plate is equipped with two, two guide rail plates are fixedly connected in the two sides of pattern plate in highest position, guide rail is equipped on each guide rail plate, and two guide rail plates are fixedly connected with test bed;Bottom positioning plate is equipped with two, two bottom positioning plates are fixedly connected in the two sides of pattern plate in lowest position, and two bottom positioning plates are fixedly connected with host side;Pull rod and ladder beam are equipped with two groups, and the guide rail plate and bottom positioning plate of each side are jointly connected with a group of pull rod and ladder beam, and the upper end of each group of pull rod and ladder beam is slidably connected with the guide rail of guide rail plate, and lower end is hinged with bottom positioning plate;Two groups of pull rod and ladder beam are also hinged with the two sides of multiple blocks of pattern plate located in middle.The utility model can solve the problem of size mismatch of step ladder caused by different host sizes and too large difference between high and low.

Description

Technical Field

[0001] This utility model relates to the field of tool technology, and in particular to an adjustable ladder. Background Technology

[0002] During the production of the main unit, different sizes of the main unit will cause changes in the distance and height between the test bench and the main unit, requiring continuous adjustment of the ladder length, which may lead to problems such as ladder length mismatch or excessive height difference.

[0003] Using a ladder of a single length can result in either a ladder that is too short to connect the main unit to the test bench, or a ladder that is too long to interfere with or prevent the installation of parts of the main unit, or hinder personnel from climbing on or off the main unit. Therefore, the length of the ladder is often unsuitable. Due to the significant vibrations generated by the main unit during operation, it is necessary to drill holes in the ladder, cut it, attach safety ropes, and reinforce it with wooden blocks, which is labor-intensive. Utility Model Content

[0004] To address the aforementioned technical problems, an adjustable ladder is provided. This utility model is designed as an adjustable-step ladder, which avoids the need for multiple adjustments to the ladder length to accommodate various computer hosts, thus improving its versatility. The technical means employed in this utility model are as follows:

[0005] An adjustable ladder includes: a pull rod, a footboard assembly, a guide rail, a ladder beam, and a bottom positioning plate. The footboard assembly includes multiple patterned plates arranged in a stepped manner, with parallel spacing from high to low.

[0006] The guide rail plate consists of two pieces, which are fixedly connected to both sides of the patterned plate at the highest position. Each guide rail plate is equipped with a guide rail, and the two guide rail plates are fixedly connected to the test bench. The bottom positioning plate consists of two pieces, which are fixedly connected to both sides of the patterned plate at the lowest position, and the two bottom positioning plates are fixedly connected to the main unit side.

[0007] The tie rods and ladder beams are provided in two sets. Each side of the guide rail plate and the bottom positioning plate are connected to a set of tie rods and ladder beams. The upper end of each set of tie rods and ladder beams is slidably connected to the guide rail of the corresponding guide rail plate, and the lower end is hingedly connected to the corresponding bottom positioning plate. The tie rods and ladder beams in the same set are arranged in parallel, and the two sets of tie rods and ladder beams are also hingedly connected to the two sides of the multiple patterned plates located in the middle.

[0008] Furthermore, the tie rod and the ladder beam are slidably connected to the guide rail by bolts and nuts, respectively.

[0009] Furthermore, the patterned plate located in the middle is connected to the tie rod and the ladder beam by bolts and nuts, and the tie rod and the ladder beam are connected to the bottom positioning plate by bolts and nuts.

[0010] Furthermore, the guide rail plate is provided with a first inner groove, which is fixedly connected to the skirt of the test bench.

[0011] Furthermore, the bottom positioning plate is provided with a plurality of second inner grooves, which are fixedly connected to the skirt of the main unit.

[0012] Furthermore, the second inner groove is provided with four.

[0013] Furthermore, railings are installed above each of the ladder beams, and intermediate railings are welded onto the railings.

[0014] Furthermore, a crossbeam connects the two sides of the ladder beam.

[0015] Furthermore, the crossbeam is made of angle steel.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The adjustable ladder provided by this utility model can solve the problem of mismatched step sizes and large height differences caused by different host machine sizes. After the ladder was welded, it has been tested on various host machines. On-site feedback shows that the installation is much more convenient than before. The concave structure easily fits into the skirt of the test bench and the host machine. On-site feedback during host machine operation shows that its stability is good.

[0018] 2. The adjustable ladder provided by this utility model adopts a guide rail design, which allows for horizontal adjustment of the extended length of the ladder. Different heights can be matched by adjusting the angle of the ladder beams on both sides.

[0019] 3. The adjustable ladder provided by this utility model has a multi-layered patterned plate stepped design that can prevent the ladder from being too steep, making it easier for people to move around and improving comfort. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the adjustable ladder of this utility model.

[0022] Figure 2 This is a schematic diagram of the layout structure of the adjustable ladder of this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the adjustable ladder at its maximum angle.

[0024] In the diagram: 1. Railing; 2. Middle railing; 3. Tie rod; 4. Patterned plate; 5. Guide rail plate; 6. Ladder beam; 7. Crossbeam; 8. Bottom positioning plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] This invention primarily addresses the problem of mismatched ladder treads and significant height differences caused by varying main unit sizes. To solve this problem, this invention provides an adjustable ladder.

[0027] This utility model discloses an adjustable ladder, including a railing 1, a middle railing 2, a tie rod 3, a patterned plate 4, a guide rail 5, a ladder beam 6, a crossbeam 7, and a bottom positioning plate 8.

[0028] The patterned plate 4 is provided in multiple pieces, which together form the pedal assembly. The patterned plates 4 are arranged in a stepped manner, with parallel spacing from high to low.

[0029] There are two guide rail plates 5, which are fixedly connected to both sides of the patterned plate 4 at the highest position. Each guide rail plate 5 is equipped with a guide rail, and the two guide rail plates 5 are fixedly connected to the test bench at a high position. There are two bottom positioning plates 8, which are fixedly connected to both sides of the patterned plate 4 at the lowest position, and the two bottom positioning plates 8 are fixedly connected to the main unit side at a low position.

[0030] There are two sets of tie rods 3 and ladder beams 6. Each side of the guide rail plate 5 and the bottom positioning plate 8 are connected to a set of tie rods 3 and ladder beams 6. The upper end of each set of tie rods 3 and ladder beams 6 is slidably connected to the guide rail of the corresponding guide rail plate 5, and the lower end is hinged to the corresponding bottom positioning plate 8. The tie rods 3 and ladder beams 6 in the same set are arranged in parallel. The two sets of tie rods 3 and ladder beams 6 are also hinged to the two sides of the multiple patterned plates 4 located in the middle.

[0031] Preferably, the tie rod 3 and the ladder beam 6 are slidably connected to the guide rail by bolts and nuts, respectively. The patterned plate 4 located in the middle is connected to the tie rod 3 and the ladder beam 6 by bolts and nuts, and the tie rod 3 and the ladder beam 6 are connected to the bottom positioning plate 8 by bolts and nuts.

[0032] The guide rail plate 5 has a first inner groove, which is fixedly connected to the skirt of the test bench. The bottom positioning plate 8 has multiple second inner grooves, which are fixedly connected to the skirt of the main unit. There are four second inner grooves. The first and second inner grooves are respectively inserted into the skirts of the test bench and the main unit.

[0033] Each of the ladder beams 6 is equipped with a railing 1, and a middle railing 2 is welded onto the railing 1. A crossbeam 7 connects the two ladder beams 6. The crossbeam 7 is made of angle steel.

[0034] This invention employs a guide rail design. After the patterned plate 4 is fixed with bolts and nuts, the ladder beam 6, tie rod 3, and the four patterned plates 4 connected to it form a parallelogram design (similar to a parallelogram linkage mechanism). The length of the ladder extension can be adjusted horizontally by moving the bolts in the guide rail (which can be a long strip hole). By adjusting the angle of the ladder beams 6 on both sides, different heights can be matched, and the stepped design of the multi-layered patterned plates 4 can prevent the ladder from being too steep, making it easier for people to walk and improving comfort. The guide rail plate 5 and the bottom positioning plate 8 have a concave design on their lower sides, which allows them to be well fixed to the skirt of the test bench and the main unit, respectively. At the same time, to improve versatility, the bottom positioning plate 8 has four concave designs. In order to achieve the horizontal movement of the patterned plate 4, this invention designs four positioning blocks with internal threads in the patterned plate 4, which facilitates positioning and allows each patterned plate 4 to be fixed to the ladder beam 6 and tie rod 3 by bolt connection. Due to significant vibrations during the operation of the main unit, angle steel is used as a crossbeam 7 in the middle of the two side ladder beams 6 to improve stability.

[0035] In actual use, the section containing guide rail plate 5 should be in a higher position, and the bottom positioning plate 8 should be in a lower position. Typically, one side of guide rail plate 5 is installed on the test bench, and the bottom positioning plate 8 is installed on the main unit side, with the concave parts at both ends secured to their respective skirts.

[0036] During use, the angles of the ladder beams 6 and tie rods 3 relative to the guide rails 5 can be adjusted according to different heights. When the angle changes, the four patterned plates 4 connecting the ladder beams 6 and tie rods 3, the bottom positioning plate 8, and the railing 1 will all move accordingly. The first patterned plate 4 (at the top) connecting the ladder beams 6 and tie rods 3 can move back and forth within the guide rails of the guide rails 5. Through these changes in angle and distance, the ladder achieves an adjustable function, adapting to different distances. Railings 1 are installed above the ladder beams 6 on both sides to prevent people from falling and getting injured while passing through. A middle railing 2 is welded onto the railing 1.

[0037] After welding, this utility model has been tested on various host machines. On-site feedback indicates that installation is much more convenient than before. The concave structure can easily be secured to the test bench and the skirt of the host machine. On-site feedback also indicates that the stability is good when the host machine is in operation.

[0038] During actual production, it was discovered that variations in the size of the main unit caused changes in the distance and height between the test bench and the main unit, necessitating constant adjustments to the ladder length. This could lead to problems such as ladder length mismatch or excessive height differences. Based on the initial idea, design drawings and models were created, and production was carried out according to the drawings. An adjustable step ladder was tested on-site to verify the feasibility of the solution, yielding preliminary results. Based on these preliminary results, the adjustable step ladder was optimized, and the final solution was confirmed.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable ladder, characterized in that include: Pull rod (3), pedal assembly, guide rail plate (5), ladder beam (6) and bottom positioning plate (8), the pedal assembly includes multiple patterned plates (4), the multiple patterned plates (4) are arranged in a stepped manner, and are arranged in parallel at intervals from high to low; The guide rail plate (5) has two pieces, and the two guide rail plates (5) are fixedly connected to both sides of the patterned plate (4) at the highest position. Each guide rail plate (5) has a guide rail, and the two guide rail plates (5) are fixedly connected to the test bench. The bottom positioning plate (8) has two pieces, and the two bottom positioning plates (8) are fixedly connected to both sides of the patterned plate (4) at the lowest position, and the two bottom positioning plates (8) are fixedly connected to the main unit side. The tie rod (3) and ladder beam (6) are provided in two sets. Each side of the guide rail plate (5) and the bottom positioning plate (8) are connected to a tie rod (3) and ladder beam (6). The upper end of each tie rod (3) and ladder beam (6) is slidably connected to the guide rail of the corresponding guide rail plate (5), and the lower end is hinged to the corresponding bottom positioning plate (8). The tie rod (3) and ladder beam (6) in the same set are arranged in parallel. The two sets of tie rod (3) and ladder beam (6) are also hinged to both sides of the multiple patterned plates (4) located in the middle.

2. The adjustable ladder of claim 1, wherein, The tie rod (3) and the ladder beam (6) are slidably connected to the guide rail by bolts and nuts, respectively.

3. The adjustable ladder of claim 1, wherein, The patterned plate (4) located in the middle is connected to the tie rod (3) and the ladder beam (6) by bolts and nuts, and the tie rod (3) and the ladder beam (6) are connected to the bottom positioning plate (8) by bolts and nuts.

4. The adjustable ladder of claim 1, wherein, The guide rail plate (5) is provided with a first inner groove, which is fixedly connected to the skirt of the test bench.

5. The adjustable ladder of claim 1, wherein, The bottom positioning plate (8) is provided with a plurality of second inner grooves, which are fixedly connected to the skirt of the main unit.

6. The adjustable ladder according to claim 5, characterized in that, The second inner groove has four sections.

7. The adjustable ladder according to claim 1, characterized in that, Each of the ladder beams (6) is equipped with a railing (1), and a middle railing (2) is welded onto the railing (1).

8. The adjustable ladder according to claim 1, characterized in that, A crossbeam (7) connects the two sides of the ladder beams (6).

9. The adjustable ladder according to claim 8, characterized in that, The crossbeam (7) is made of angle steel.

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