Liftable step ladder

Abstract

The utility model provides a liftable step ladder. The liftable step ladder comprises a fixing assembly, a bracket assembly and a plurality of ladder plates, the bracket assembly comprises a first bracket assembly and a second bracket assembly, and the plurality of ladder plates are arranged between the first bracket assembly and the second bracket assembly at intervals; each of the first bracket assembly and the second bracket assembly comprises at least two sub-brackets; the two sub-supports of the first support assembly and the second support assembly are rotationally connected with the fixing assembly. The two sub-supports of the first support assembly are rotationally connected with one side of the ladder plate, and the two sub-supports of the second support assembly are rotationally connected with the other side of the ladder plate. According to the step ladder, the overall height of the step ladder can be adjusted according to actual requirements through the rotational connection of the ladder plates and the support assemblies and the rotational connection of the support assemblies and the fixing assemblies, the overall structure is stabilized through the handrail rods and the handrail assemblies, the use convenience of a user is improved, the overall structure of the step ladder is simplified, and the cost is reduced. And the overall safety performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of escalator technology, specifically to a liftable step ladder. Background Technology

[0002] An underwater ladder is a stepped passageway specifically designed for underwater environments, connecting the surface to an underwater lifting platform. It allows divers and other personnel to move safely within the underwater environment without the need for submersibles or other complex equipment. Underwater ladders are commonly used in scenarios requiring underwater operations, such as marine engineering, underwater archaeology, and underwater rescue. They allow divers to quickly and safely access underwater lifting platforms, thereby improving work efficiency and safety.

[0003] Existing underwater ladders have fixed angles and overall heights, which cannot meet diverse usage needs, result in a poor user experience, and have complex structures. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a height-adjustable staircase, the specific solution of which is as follows:

[0005] A height-adjustable staircase includes a fixing assembly, a support assembly, and a plurality of stair treads; the support assembly includes a first support assembly and a second support assembly, and the plurality of stair treads are spaced apart between the first support assembly and the second support assembly;

[0006] Both the first support assembly and the second support assembly include at least two sub-supports; one end of each of the two sub-supports of the first support assembly is rotatably connected to one side of the fixing assembly; one end of each of the two sub-supports of the second support assembly is rotatably connected to the other side of the fixing assembly.

[0007] At least two sub-supports of the first support assembly are rotatably connected to one side of the ladder plate, and at least two sub-supports of the second support assembly are rotatably connected to the other side of the ladder plate.

[0008] In one specific embodiment, the fixing component includes a fixing member and a fixing rod for fixing to the external environment. The fixing member is connected to one end of the fixing rod near the support assembly, and the side of the fixing member away from the fixing rod is rotatably connected to the support assembly.

[0009] In one specific embodiment, the fixing assembly further includes a handrail and a fixing base. One side of the handrail is rotatably connected to the fixing base, and the other side is connected to the fixing member. The end of the handrail connected to the fixing base is connected to the fixing rod.

[0010] In one specific embodiment, the system further includes a handrail assembly, which includes a first handrail and a second handrail. One end of the first handrail is rotatably connected to the fixed assembly, and the other end is rotatably connected to the second handrail. At least one of the step boards is connected to the end of the second handrail away from the first handrail.

[0011] In one specific embodiment, the handrail assembly includes a first handrail assembly and a second handrail assembly, wherein the first handrail assembly is connected to the side of the step plate near the first support assembly, and the second handrail assembly is connected to the side of the step plate near the second support assembly.

[0012] In one specific embodiment, a roller assembly is further included, which is disposed at the end of the support assembly away from the fixing component. The roller assembly includes two sets of rollers that are detachably connected to the first support assembly and the second support assembly, respectively.

[0013] In one specific embodiment, each of the sub-supports is provided with a socket corresponding to the position of each of the ladder plates, and each of the ladder plates is rotatably connected to each of the sub-supports through a pin that matches the socket.

[0014] In one specific embodiment, a plurality of the ladder plates are evenly distributed between the first support assembly and the second support assembly, and the spacing between two adjacent ladder plates is equal.

[0015] In one specific embodiment, each of the ladder plates is provided with a hollow portion, and the hollow portion includes a plurality of through holes.

[0016] In one specific embodiment, the outer surface of the handrail assembly, and / or the support assembly, and / or each of the ladder treads is provided with an anti-slip layer.

[0017] Beneficial effects:

[0018] This utility model allows the overall height of the staircase to be adjusted according to actual needs through the rotatable connection between each step of the staircase and the support assembly, as well as the rotatable connection between the support assembly and the fixing assembly for fixing in the external environment. The overall structure is stabilized by the handrail and handrail assembly, which improves the user's convenience, simplifies the overall structure of the staircase, and enhances the overall safety performance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the fixing component structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the folding ladder when it is raised according to this utility model;

[0023] Figure 4 This is a schematic diagram of the support assembly structure of this utility model.

[0024] The reference numerals in the attached figures are as follows: 1-Fixing assembly; 1a-Fixing element; 1b-Fixing rod; 1c-Handrail; 1d-Fixing base; 2-Support assembly; 2a-First support assembly; 2b-Second support assembly; 2c-Sub-support; 3-Stair tread; 4-Handrail assembly; 4a-First handrail; 4b-Second handrail; 4c-First handrail assembly; 4d-Second handrail assembly; 5-Rolling wheel assembly; 6-Insertion hole; 7-Hollowed-out part. Detailed Implementation

[0025] The following will describe the concept, specific structure and technical effects of this utility model clearly and completely with reference to the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0026] Various embodiments of the present invention will be described more fully below. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0027] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of the present invention, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0028] In various embodiments of this utility model, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0029] The terms used in the various embodiments of this utility model (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this utility model, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0030] It should be noted that, in this utility model, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this utility model, those skilled in the art should understand that the terms indicating orientation or positional relationship in the text are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] The terminology used in the various embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the various embodiments of this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the various embodiments of this invention pertain. The terms (such as those defined in a generally used dictionary) are to be interpreted as having the same meaning as in the context of the relevant technical field and are not to be interpreted as having an idealized or overly formal meaning, unless clearly defined in the various embodiments of this invention.

[0033] Example 1

[0034] This embodiment utilizes the rotatable connection between each step of the staircase and the support assembly, as well as the rotatable connection between the support assembly and the fixing components used for securing to the external environment. This allows the overall height of the staircase to be adjusted according to actual needs. The handrails and handrail assembly stabilize the overall structure, improve user convenience, simplify the overall structure of the staircase, and enhance overall safety performance. The specific solution is as follows:

[0035] A liftable staircase includes a fixing component 1, a support component 2, and a plurality of step plates 3; the support component 2 includes a first support component 2a and a second support component 2b, and the plurality of step plates 3 are spaced apart between the first support component 2a and the second support component 2b.

[0036] Both the first support assembly 2a and the second support assembly 2b include at least two sub-supports 2c; one end of each of the two sub-supports 2c of the first support assembly 2a is rotatably connected to one side of the fixing assembly 1; one end of each of the two sub-supports 2c of the second support assembly 2b is rotatably connected to the other side of the fixing assembly 1.

[0037] At least two sub-supports 2c of the first support assembly 2a are rotatably connected to one side of the ladder plate 3, and at least two sub-supports 2c of the second support assembly 2b are rotatably connected to the other side of the ladder plate 3.

[0038] As attached Figure 1 As shown, this embodiment provides a height-adjustable and structurally stable lift ladder, aiming to provide a safe and convenient passage solution. In practical applications, this embodiment can be used in conjunction with an underwater lifting platform. Specifically, the ladder described in this embodiment mainly consists of a fixed component 1, a support component 2, and multiple flexibly configured ladder plates 3.

[0039] The fixing component 1 is securely installed on the ground or a designated support structure to ensure the stability of the entire staircase during lifting. The support component 2 is the core skeleton of the staircase system. In this embodiment, the support component 2 is divided into a first support component 2a and a second support component 2b, which are symmetrically distributed on both sides of the stair tread 3 to jointly support the entire stair tread structure. Each support component 2 includes at least two sub-supports 2c to form a stable support frame.

[0040] Furthermore, one end of each of the two sub-supports 2c of the first support assembly 2a is rotatably connected to one side of the fixed assembly 1 via bearings or hinge mechanisms, while the two sub-supports 2c of the second support assembly 2b are connected to the other side of the fixed assembly 1 in the same manner, allowing the support assembly 2 to rotate around the fixed assembly 1, thereby realizing the lifting function of the staircase. Multiple step plates 3 are arranged between the first support assembly 2a and the second support assembly 2b, forming a continuous walking path. In practical applications, the step plates 3 are made of non-slip and corrosion-resistant materials, and the surface can also be coated with non-slip textures to ensure safe walking in wet or underwater environments. One side of each step plate 3 is rotatably connected to at least two sub-supports 2c of the first support assembly 2a, and the other side is connected to the sub-supports 2c of the second support assembly 2b in the same manner, further realizing the lifting function of the staircase.

[0041] In one specific embodiment, the fixing component 1 includes a fixing member 1a and a fixing rod 1b for fixing to the external environment. The fixing member 1a is connected to the end of the fixing rod 1b near the support component 2, and the side of the fixing member 1a away from the fixing rod 1b is rotatably connected to the support component 2. The design of the fixing member 1a balances structural strength and flexibility, is firmly connected to the fixing rod 1b, and provides an interface for rotatable connection with the support component 2. The fixing rod 1b is used to firmly fix the fixing component 1 to the external environment (such as the ground, wall, or a specific installation platform). In practical applications, the length, diameter, and material of the fixing rod 1b can be customized according to the specific installation environment and load-bearing requirements.

[0042] In one specific embodiment, as shown in the appendix Figure 2As shown, the fixing assembly 1 also includes a handrail 1c and a fixing base 1d. One side of the handrail 1c is rotatably connected to the fixing base 1d, and the other side is connected to the fixing member 1a. The end of the handrail 1c connected to the fixing base 1d is connected to the fixing rod 1b. As an important safety accessory for the staircase, the handrail 1c provides stable support for the user during staircase use. It is typically made of a sturdy, durable, and smooth-surfaced material, such as stainless steel or aluminum alloy. The connection of one side of the handrail 1c to the fixing base 1d allows for some flexibility under lateral forces while maintaining overall stability. The fixing base 1d, through welding, bolting, or other reliable fixing methods, ensures that the handrail 1c is securely fixed in a predetermined position. The other side of the handrail 1c is connected to the fixing member 1a, forming a complete support structure.

[0043] In one specific embodiment, a handrail assembly 4 is also included, which includes a first handrail 4a and a second handrail 4b. One end of the first handrail 4a is rotatably connected to the fixing assembly 1, and the other end is rotatably connected to the second handrail 4b. At least one step plate 3 is connected to the end of the second handrail 4b away from the first handrail 4a.

[0044] To further enhance user comfort and safety when using the liftable staircase, this embodiment also includes a handrail assembly 4. The handrail assembly 4 is composed of a first handrail 4a and a second handrail 4b. The first handrail 4a is rotatably connected to the fixed assembly 1, allowing it to adjust its angle within a certain range according to user needs or the staircase's lifting / lowering status, thus providing a support point that better fits the user's hand position. This rotatable connection also ensures the stability and reliability of the handrail assembly 4 during staircase operation. At the other end, the first handrail 4a is rotatably connected to the second handrail 4b; this double-handrail design enhances the overall strength and support of the handrail. The end of the second handrail 4b furthest from the first handrail 4a is cleverly connected to at least one step tread 3, simplifying the overall structure of the staircase and improving overall safety performance.

[0045] In one specific embodiment, the handrail assembly 4 includes a first handrail assembly 4c and a second handrail assembly 4d. The first handrail assembly 4c is connected to the side of the step tread 3 closest to the first support assembly 2a, and the second handrail assembly 4d is connected to the side of the step tread 3 closest to the second support assembly 2b. The arrangement of a set of handrail assemblies 4 on both sides of the step tread 3 aims to provide users with more balanced support, making the staircase more stable and safer during use.

[0046] In one specific embodiment, a roller assembly 5 is also included. The roller assembly 5 is disposed at the end of the support assembly 2 away from the fixed assembly 1. The roller assembly 5 includes two sets of rollers that are detachably connected to the first support assembly 2a and the second support assembly 2b, respectively. To enhance the flexibility and convenience of the liftable staircase, this embodiment also adds the roller assembly 5, as shown in the attached figure. Figure 2 As shown, the roller assembly 5 is located at the bottom of the staircase. The roller assembly 5 consists of two sets of rollers, each set of rollers being detachably connected to the first support assembly 2a and the second support assembly 2b, respectively, to ensure the stability and safety of the staircase during movement. The rollers are typically made of wear-resistant and durable materials, such as rubber or polyurethane, to reduce friction and noise with the ground and protect the ground from damage.

[0047] In one specific embodiment, each sub-support 2c is provided with a socket 6 corresponding to the position of each stair plate 3. Each stair plate 3 is rotatably connected to each sub-support 2c through a pin that matches the socket 6. To improve the flexibility and stability of the stair system, each sub-support 2c is equipped with a socket 6 corresponding to the position of the stair plate 3, and each stair plate 3 is equipped with a pin that matches the socket 6. These pins are usually made of high-strength, corrosion-resistant materials to ensure that they are not easily damaged or deformed during long-term use. When it is necessary to install the stair plate 3 onto the sub-support 2c, simply align the pin with the socket 6 and insert it to achieve a stable connection between the stair plate and the support. When it is necessary to adjust the overall height of the stair system, the stair plate 3 can rotate relative to the support assembly 2, as shown in the attached figure. Figure 3 As shown, when the stairs reach their highest point, the length of each step 3 is aligned with that of each sub-support 2c.

[0048] In one specific embodiment, multiple step plates 3 are evenly distributed between the first support assembly 2a and the second support assembly 2b, with equal spacing between adjacent step plates 3. This arrangement of step plates 3 not only enhances the overall aesthetics and practicality of the staircase structure but also provides users with a more convenient and comfortable walking experience.

[0049] In one specific embodiment, each ladder plate 3 is provided with a perforated portion 7, which includes several through holes. In a more refined embodiment, to reduce the overall weight of the ladder plate 3 while enhancing its visual transparency and airflow, the designer cleverly incorporated the perforated portion 7 into each ladder plate 3. In practical applications, this embodiment can be used with an underwater lifting platform; therefore, the perforated portion 7 on each ladder plate 3 prevents water accumulation on the ladder plate 3 from threatening the user's safety. In practical applications, the size and shape of the perforated portion can be adjusted and replaced according to actual needs.

[0050] In one specific embodiment, the outer surfaces of the handrail assembly 4, and / or the support assembly 2, and / or each step 3 are provided with an anti-slip layer. In this embodiment, the outer surfaces of the handrail assembly 4, the support assembly 2, and each step 3 are all provided with an anti-slip layer. The anti-slip layer is typically made of a material with a high coefficient of friction, such as rubber, silicone, or plastic with a special texture, providing users with a safer and more reliable protection.

[0051] This utility model allows the overall height of the staircase to be adjusted according to actual needs through the rotatable connection between each step of the staircase and the support assembly, as well as the rotatable connection between the support assembly and the fixing assembly for fixing in the external environment. The overall structure is stabilized by the handrail and handrail assembly, which improves the user's convenience, simplifies the overall structure of the staircase, and enhances the overall safety performance.

[0052] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A height-adjustable staircase, characterized in that, It includes a fixing component, a support component, and multiple ladder plates; the support component includes a first support component and a second support component, and the multiple ladder plates are spaced apart between the first support component and the second support component; Both the first support assembly and the second support assembly include at least two sub-supports; one end of each of the two sub-supports of the first support assembly is rotatably connected to one side of the fixing assembly; one end of each of the two sub-supports of the second support assembly is rotatably connected to the other side of the fixing assembly. At least two sub-supports of the first support assembly are rotatably connected to one side of the ladder plate, and at least two sub-supports of the second support assembly are rotatably connected to the other side of the ladder plate.

2. The liftable staircase according to claim 1, characterized in that, The fixing component includes a fixing member and a fixing rod for fixing to the external environment. The fixing member is connected to one end of the fixing rod near the support assembly, and the side of the fixing member away from the fixing rod is rotatably connected to the support assembly.

3. The liftable staircase according to claim 2, characterized in that, The fixing assembly also includes a handrail and a fixing base. One side of the handrail is rotatably connected to the fixing base, and the other side is connected to the fixing member. The end of the handrail connected to the fixing base is connected to the fixing rod.

4. The liftable staircase according to claim 1, characterized in that, It also includes a handrail assembly, which includes a first handrail and a second handrail. One end of the first handrail is rotatably connected to the fixed assembly, and the other end is rotatably connected to the second handrail. The end of the second handrail away from the first handrail is connected to at least one of the step boards.

5. A height-adjustable staircase according to claim 4, characterized in that, The handrail assembly includes a first handrail assembly and a second handrail assembly. The first handrail assembly is connected to the side of the step plate near the first support assembly, and the second handrail assembly is connected to the side of the step plate near the second support assembly.

6. A height-adjustable staircase according to claim 1, characterized in that, It also includes a roller assembly, which is disposed at the end of the support assembly away from the fixing component, and the roller assembly includes two sets of rollers that are detachably connected to the first support assembly and the second support assembly, respectively.

7. A height-adjustable staircase according to claim 1, characterized in that, Each of the sub-supports is provided with a socket corresponding to the position of each of the ladder plates, and each of the ladder plates is rotatably connected to each of the sub-supports through a pin that matches the socket.

8. A height-adjustable staircase according to claim 1, characterized in that, Multiple ladder plates are evenly distributed between the first support assembly and the second support assembly, and the spacing between two adjacent ladder plates is equal.

9. A height-adjustable staircase according to claim 1, characterized in that, Each of the aforementioned ladder plates is provided with a hollow section, which includes several through holes.

10. A height-adjustable staircase according to claim 4, characterized in that, The outer surfaces of the handrail assembly, and / or the support assembly, and / or each of the step plates are provided with an anti-slip layer.

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