A lightweight step ladder that is easy to move

Abstract

The utility model relates to the technical field of step ladder, disclose a light step ladder convenient to remove, including frame one, the outside front side left and right two ends of frame one all are fixedly connected with clamping mechanism, the inside rotationally connected with the bearing plate of frame one, the outside rear side fixedly connected with the link axle of frame one, the outside rotationally connected with support frame of link axle, the outside front side fixedly connected with adjusting mechanism of support frame, the clamping mechanism includes fixed frame, in the utility model, when bearing plate is placed to suitable position, through loosening handle, make spring rebound, through the force of spring rebound, make rotary plate one can drive connecting clamping plate and bearing plate are clamped, when bearing plate is stable, the user feels safe and reliable to stand on step ladder, stable bearing plate can provide solid support for the user, avoid because bearing plate shakes and lead to the user loses balance and falls.

Description

Technical Field

[0001] This utility model relates to the field of stair technology, and in particular to a lightweight stair that is easy to move. Background Technology

[0002] When you need to change a light bulb in a living room chandelier, clean cobwebs from ceiling corners, or wipe high windows, a lightweight step ladder can be easily moved to the desired location. For example, in a home with a high ceiling, it's difficult for someone of average height to reach the chandelier to change a bulb, but this lightweight step ladder can be easily pushed under the chandelier, allowing the user to safely stand on it and complete the task. Because it's easy to move and can be quickly removed after use, it doesn't occupy space for extended periods, and its lightweight material prevents it from scratching the floor when moved around the living room.

[0003] In existing technologies, some staircases utilize specially designed metal connectors, such as angle irons or special connecting plates. These connectors are welded or bolted between the staircase frame and the load-bearing plate, enhancing the overall integrity between the two.

[0004] However, in actual use, if the support plate is unstable, it will sway, tilt, or shift when a user stands on the ladder. For example, when construction workers use the ladder for work at heights, instability of the support plate can cause them to lose their balance and fall, resulting in fractures, sprains, and other injuries. Even in home settings, such as changing a light bulb, users can fall due to the swaying of the support plate, resulting in head injuries, abrasions, and other injuries. Therefore, to address the above-mentioned problems, a lightweight ladder that is easy to move is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a lightweight step ladder that is easy to move, aiming to improve the problem that some devices in the prior art cannot stabilize the support plate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lightweight, easily movable staircase includes a frame. The left and right ends of the front side of the frame are fixedly connected to clamping mechanisms. A bearing plate is rotatably connected inside the frame. A connecting shaft is fixedly connected to the rear side of the frame. A support frame is rotatably connected to the outside of the connecting shaft. An adjustment mechanism is fixedly connected to the front side of the support frame.

[0008] The clamping mechanism includes a fixed frame, a connecting shaft is fixedly connected inside the fixed frame, a rotating plate is rotatably connected to the outside of the connecting shaft, a connecting plate is fixedly connected to the outside of the rotating plate, the outside of the connecting plate engages with the left and right sides of the outside of the bearing plate, a spring-loaded assembly is provided on the outside of the rotating plate, a handle is fixedly connected to the far side of the two rotating plates, and the outside of the fixed frame is fixedly connected to the front side of the frame.

[0009] As a further description of the above technical solution:

[0010] The rebound assembly includes a telescopic rod, and a spring is sleeved on the outside of the telescopic rod. The telescopic rod is fixedly connected to the left and right sides of the outside of the rotating plate.

[0011] As a further description of the above technical solution:

[0012] The adjustment mechanism includes a connecting frame, a fixed shaft fixedly connected inside the connecting frame, an adjusting belt fixedly connected to the fixed shaft, a housing fixedly connected inside the adjusting belt, rotating rollers fixedly connected to both the left and right sides inside the housing, an extension belt fixedly connected to the outside of the adjusting belt, a connecting frame fixedly connected to the front outside of the housing, a support shaft fixedly connected inside the connecting frame, a rotating plate two rotatably connected to the outside of the support shaft, a locking rod fixedly connected to the front outside of the rotating plate two, and the connecting frame fixedly connected to the front outside of the support frame.

[0013] As a further description of the above technical solution:

[0014] The support frame is fixedly connected to the upper and lower ends of the interior, and the support plate is fixedly connected to the left and right sides of the exterior.

[0015] As a further description of the above technical solution:

[0016] The support frame is fixedly connected to the left and right ends of the outer front side, and the other end of the tension strap is fixedly connected to the left and right ends of the outer rear side of the frame.

[0017] As a further description of the above technical solution:

[0018] The extension belt is slidably connected to the outer wall of the rotating roller, and the rotating plate 2 is rotatably connected to the inside of the connecting frame.

[0019] As a further description of the above technical solution:

[0020] The outer side of the extension band contacts the outer front side of the adjustment band, and the outer side of the latch engages with the inner side of the extension band;

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the left and right sides of the outside of the bearing plate, and the other end of the spring is fixedly connected to the left and right sides of the outside of the connecting plate.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when the support plate is placed in the appropriate position, releasing the handle causes the spring to rebound. The force of the spring rebound causes the rotating plate to engage with the connecting plate and the support plate. When the support plate is stable, the user will feel safe and secure standing on the stairs. The stable support plate provides solid support for the user, preventing the user from losing balance and falling due to the swaying of the support plate.

[0025] 2. In this utility model, when adjusted to a suitable position, rotating the second rotating plate can drive the locking rod to fix the extension belt, thereby enabling the adjustment of the distance between the first frame and the support frame. When it is necessary to place heavier items on the stairs or when there are heavier users, the distance between the frame and the support frame can be appropriately increased to make the support surface of the stairs wider, thereby enhancing its load-bearing capacity and stability. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a lightweight, easily movable staircase proposed in this utility model.

[0027] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a schematic diagram of the tension belt structure of a lightweight, easily movable step ladder proposed in this utility model.

[0029] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0030] Legend:

[0031] 1. Frame 1; 2. Fixing frame; 3. Connecting shaft; 4. Rotating plate 1; 5. Connecting clamping plate; 6. Bearing plate; 7. Telescopic rod; 8. Spring; 9. Handle; 10. Support frame; 11. Connecting shaft; 12. Support plate; 13. Connecting plate; 14. Tension belt; 15. Connecting frame; 16. Fixing shaft; 17. Adjusting belt; 18. Housing; 19. Rotating roller; 20. Extension belt; 21. Connecting frame; 22. Supporting shaft; 23. Rotating plate 2; 24. Clamping rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figures 1 to 3 This utility model provides an embodiment of a lightweight, easily movable staircase, comprising a frame 1. The frame 1 serves as the basic skeleton structure of the entire staircase, and its material is typically high-strength and lightweight aluminum alloy or carbon fiber. The aluminum alloy frame 1 possesses good corrosion resistance, processing performance, and a high strength-to-weight ratio, significantly reducing its weight while ensuring the overall structural stability of the staircase, making it easy to transport and operate. The left and right ends of the front exterior of the frame 1 are fixedly connected to clamping mechanisms, which stably fix the support plate 6, ensuring that it will not accidentally rotate or shift during use, providing a safe and reliable stepping surface for the user. The support plate 6 is rotatably connected internally to the frame 1. The support plate 6, as the main component stepped on by the user, is generally made of metal sheet or high-strength engineering plastic, such as aluminum alloy sheet. The aluminum alloy plate bearing plate 6 has high strength and rigidity, and can withstand a large weight. At the same time, its surface is treated with anti-slip treatment, such as setting anti-slip texture and attaching anti-slip rubber pads, to prevent users from slipping during stepping. The connecting shaft 11 is fixedly connected to the rear side of the frame 1. The connecting shaft 11 is a component that connects the frame 1 and the support frame 10. Its material is generally metal, such as stainless steel or alloy steel, which has high strength and rigidity. It can stably support the support frame 10 and withstand various external forces generated during the use of the stairs, ensuring that the connection between the support frame 10 and the frame 1 is stable and reliable, and there will be no loosening, deformation or breakage.

[0034] A support frame 10 is externally rotatably connected to the connecting shaft 11. The support frame 10 is a key component supporting the ladder and maintaining its stable standing position. Its material is generally metal, such as aluminum alloy or stainless steel, possessing high strength and rigidity, capable of bearing the weight of the ladder itself and the user, and maintaining stable support performance under various ground conditions. An adjustment mechanism is fixedly connected to the front of the support frame 10, allowing for flexible adjustment of the ladder's height or angle to adapt to different usage needs and environmental conditions. The adjustment mechanism includes a connecting frame 15, which serves as a structural component supporting and connecting other adjustment parts. Its material is generally metal, such as angle steel or channel steel, possessing good compressive and bending resistance, and stably supporting components such as the fixed shaft 16 and the adjusting belt 17, ensuring no shaking or deformation occurs during ladder height or angle adjustments. The fixed shaft 16 is fixedly connected internally to the connecting frame 15, serving as the rotation shaft for the adjusting belt 17. Its material is generally metal, such as stainless steel or alloy steel, possessing high strength and rigidity, capable of withstanding the friction, tension, and pressure generated by the adjusting belt 17 during rotation. Various forces ensure that the adjusting belt 17 can rotate flexibly and smoothly on it, realizing the function of adjusting the height or angle of the steps; the adjusting belt 17 is fixedly connected to the fixed shaft 16, and the housing 18 is fixedly connected inside the adjusting belt 17. Rotating rollers 19 are fixedly connected to both the left and right sides inside the housing 18. The rotating rollers 19 are mostly made of stainless steel or aluminum alloy. Stainless steel rotating rollers 19 have excellent corrosion resistance and surface smoothness, and can resist the erosion of moisture, sweat and other substances during long-term use. Moreover, their smooth surface can effectively reduce the coefficient of friction between them and the adjusting belt 17, reduce wear, and extend the service life of the components.

[0035] An extension belt 20 is fixedly connected to the outside of the adjusting belt 17. The extension belt 20 is an extension of the adjusting belt 17 and is made of the same or similar high-strength synthetic fiber material to ensure consistency in performance and strength. A connecting frame 21 is fixedly connected to the front of the outer side of the housing 18. The connecting frame 21 is an intermediate structural component connecting the housing 18 with the support shaft 22 and the rotating plate 23. Its material is generally metal, such as aluminum alloy or stainless steel. The aluminum alloy connecting frame 21 has the advantages of light weight, high strength and good processing performance, which makes it easy to install and fix on the housing 18, and can maintain stable structural performance during long-term use. The support shaft 22 is fixedly connected inside the connecting frame 21. The rotating plate 23 is rotatably connected to the outside of the support shaft 22. The rotating plate 23 is a key transmission component for controlling the engagement and disengagement of the control lever 24 and the extension belt 20. Its material is generally metal sheet or metal rod, which has a certain strength and flexibility. A locking rod 24 is fixedly connected to the outer front side of the rotating plate 23. The locking rod 24 is a component that directly engages with the extension belt 20. Its material is generally metal, such as stainless steel or alloy steel, which has high strength and rigidity and can firmly lock the extension belt 20 to prevent it from moving accidentally after adjustment. The connecting frame 15 is externally fixedly connected to the outer front side of the support frame 10.

[0036] The clamping mechanism includes a fixed frame 2, which serves as the basic structural component supporting and connecting other clamping parts. The fixed frame 2 is typically made of metal, such as aluminum alloy, possessing high strength and rigidity. It can stably support components such as the connecting shaft 3 and the rotating plate 4, and withstand various external forces during the use of the staircase without significant deformation or damage. The connecting shaft 3 is internally fixed to the fixed frame 2, serving as the rotation center shaft of the rotating plate 4. Its material is typically metal, such as stainless steel or alloy steel, possessing high strength and rigidity. It can withstand various forces such as friction, tension, and pressure generated during the rotation of the rotating plate 4, ensuring that the rotating plate 4 can rotate flexibly and smoothly on it. The rotating plate 4 is externally rotatably connected to the connecting shaft 3. The rotating plate 4, as a key transmission component for clamping and releasing the bearing plate 6, is typically made of metal sheet or metal rod, possessing certain strength and flexibility. It can rotate flexibly under the drive of the connecting shaft 3, thereby driving the connecting clamp... Plate 5 enables engagement or disengagement with the support plate 6. The rotating plate 4 is externally fixedly connected to a connecting plate 5. The connecting plate 5 is a component that directly contacts the support plate 6 and engages and fixes it. Its material is generally metal, such as aluminum alloy or stainless steel, which has high strength and rigidity. It can firmly hold the support plate 6 and prevent it from rotating or shifting accidentally during the use of the staircase. The external side of the connecting plate 5 engages with the external left and right sides of the support plate 6. The external side of the rotating plate 4 is equipped with a spring-loaded component. The spring-loaded component can automatically reset the rotating plate 4 after the engagement or disengagement operation, providing convenience for the next operation and ensuring the stability and reliability of the engagement mechanism.

[0037] The rebound assembly includes a telescopic rod 7. As a component that provides telescopic function and support, the telescopic rod 7 is generally made of metal, such as stainless steel or aluminum alloy, which has a certain strength and rigidity. It can work stably outside the rotating plate 4 and will not be easily deformed or damaged by environmental factors or external forces. The stainless steel telescopic rod 7 has good corrosion resistance and strength and can be used for a long time in various complex environments to ensure the normal operation of the rebound assembly. A spring 8 is sleeved on the outside of the telescopic rod 7. The spring 8 plays a key role in providing elastic force and resetting in the rebound assembly. Spring 8 is made of high-quality spring steel. Its elastic coefficient is precisely calculated and designed based on factors such as the rotation resistance, clamping force requirements, and reset requirements of rotating plate 4 to ensure that it can provide just the right elastic support for rotating plate 4 under various working conditions. The telescopic rod 7 is externally fixedly connected to the left and right sides of the rotating plate 4. Handles 9 are fixedly connected to the opposite sides of the two rotating plates 4. Handles 9 are used to facilitate the operation of rotating plate 4. They are generally made of plastic or rubber-coated metal rods, which have a good grip and anti-slip performance, making it easy for users to apply force to rotate rotating plate 4. The fixing bracket 2 is externally fixedly connected to the front side of frame 1, so that the clamping mechanism can be stably installed on frame 1. During the assembly and use of the ladder, the rotating plate 4 is rotated by operating handle 9, thereby realizing the engagement and disengagement of connecting plate 5 and bearing plate 6. The operation is simple and convenient, and the clamping mechanism has high stability and reliability, which can effectively ensure the safe use of the ladder.

[0038] Reference Figures 3 to 4The support frame 10 has support plates 12 fixedly connected to its upper and lower ends. These support plates 12 are crucial components for enhancing the structural stability and load-bearing capacity of the support frame 10. They are typically made of sturdy metal plates of a certain thickness, such as steel plates. The steel support plates 12 have high strength and rigidity, capable of withstanding significant pressure and tension, effectively preventing deformation or damage to the support frame 10 when bearing the weight of the stairs and the user. Connecting plates 13 are fixedly connected to the left and right sides of the support plates 12. These connecting plates 13 serve as bridges connecting the support plates 12 and other components of the support frame 10. They are also made of metal, such as aluminum alloy or stainless steel, possessing good weldability and high strength, ensuring a firm and stable connection. Tension straps 14 are fixedly connected to the left and right ends of the front side of the support frame 10. These tension straps 14 connect the support frame 10 and the frame 1, and are typically made of high-strength fabric materials, such as nylon webbing or polyester fiber webbing. The nylon tension belt 14 has good strength, wear resistance and corrosion resistance, and can withstand large tensile forces, ensuring that it will not break or be damaged due to accidental pulling during the use of the staircase. The other end of the tension belt 14 is fixedly connected to the left and right ends of the rear side of the frame 1. The extension belt 20 is slidably connected to the outer wall of the rotating roller 19. The rotating roller 19 is a component that guides the movement of the extension belt 20 and reduces its frictional resistance. Its material is generally metal, such as stainless steel or aluminum alloy, with good surface finish and rotation performance. The stainless steel rotating roller 19 has high corrosion resistance and can work stably under various environmental conditions. Its smooth surface can effectively reduce the friction coefficient when the extension belt 20 contacts it, thus reducing wear. The external rotating plate 23 is rotatably connected to the inside of the connecting frame 21. The external of the extension belt 20 contacts the external front side of the adjusting belt 17. The external of the clamping rod 24 engages with the inside of the extension belt 20. One end of the spring 8 is fixedly connected to the external left and right sides of the bearing plate 6, and the other end of the spring 8 is fixedly connected to the external left and right sides of the connecting clamping plate 5. When the connecting clamping plate 5 engages or disengages from the bearing plate 6, the spring 8 will be stretched or compressed accordingly, storing elastic potential energy. The force applied to the connecting clamping plate 5 is automatically adjusted according to the elastic coefficient and the amount of stretching of the spring 8. Working in coordination with the rotating plate 4 and other components, the engaging of the connecting clamping plate 5 with the bearing plate 6 is made tighter or easier to disengage. It can maintain a stable working state during long-term use and will not malfunction or fail due to connection problems of the spring 8, ensuring the reliability and stability of the clamping mechanism.

[0039] Working principle: When fixing the support plate 6, by pulling the handle 9, the handle 9 causes the telescopic rod 7 to stretch through the rotating plate 4, which in turn causes the spring 8 to deform. This allows the rotating plate 4 to drive the connecting plate 5 to disengage from the support plate 6. When the support plate 6 is placed in the appropriate position, by releasing the handle 9, the spring 8 rebounds. The rebound force of the spring 8 causes the rotating plate 4 to engage the connecting plate 5 with the support plate 6, thereby stabilizing the support plate 6.

[0040] When adjusting the distance between frame 1 and support frame 10, rotating plate 23 is rotated. Under the action of rotating plate 23, rotating plate 23 is removed from the inside of extension belt 20 through clamping rod 24. At this time, by pulling extension belt 20, extension belt 20 is pulled out from the outside of rotating roller 19. Rotating roller 19 can prevent extension belt 20 from being worn when pulled out. When adjusted to a suitable position, rotating plate 23 can drive clamping rod 24 to fix extension belt 20, thereby realizing the adjustment of the distance between frame 1 and support frame 10.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight, easily movable staircase, comprising a frame (1), characterized in that: The frame 1 (1) is fixedly connected to the left and right ends of the front side of the frame 1 (1), and the frame 1 (1) is rotatably connected to the inside of the frame 1 (1). The frame 1 (1) is fixedly connected to the rear side of the frame 1 (1), and the frame 1 (11) is rotatably connected to the outside of the frame 1 (10). The frame 1 (10) is fixedly connected to the front side of the frame 1 (10). The clamping mechanism includes a fixed frame (2), a connecting shaft (3) is fixedly connected inside the fixed frame (2), a rotating plate (4) is rotatably connected to the outside of the connecting shaft (3), a connecting plate (5) is fixedly connected to the outside of the rotating plate (4), the outside of the connecting plate (5) engages with the left and right sides of the outside of the bearing plate (6), a spring-loaded component is provided on the outside of the rotating plate (4), a handle (9) is fixedly connected to the far side of the two rotating plates (4), and the outside of the fixed frame (2) is fixedly connected to the front side of the frame (1).

2. The lightweight, easily movable staircase according to claim 1, characterized in that: The rebound assembly includes a telescopic rod (7), and a spring (8) is sleeved on the outside of the telescopic rod (7). The telescopic rod (7) is fixedly connected to the left and right sides of the outside of the rotating plate (4).

3. The lightweight, easily movable staircase according to claim 1, characterized in that: The adjustment mechanism includes a connecting frame (15), a fixed shaft (16) is fixedly connected inside the connecting frame (15), an adjusting belt (17) is fixedly connected to the fixed shaft (16), a housing (18) is fixedly connected inside the adjusting belt (17), rotating rollers (19) are fixedly connected to the left and right sides inside the housing (18), an extension belt (20) is fixedly connected to the outside of the adjusting belt (17), a connecting frame (21) is fixedly connected to the front outside of the housing (18), a support shaft (22) is fixedly connected inside the connecting frame (21), a rotating plate (23) is rotatably connected to the outside of the support shaft (22), a locking rod (24) is fixedly connected to the front outside of the rotating plate (23), and the connecting frame (15) is fixedly connected to the front outside of the support frame (10).

4. The lightweight, easily movable staircase according to claim 1, characterized in that: The support frame (10) has a support plate (12) fixedly connected to both the upper and lower ends inside, and a connecting plate (13) fixedly connected to both the left and right sides outside the support plate (12).

5. A lightweight, easily movable staircase according to claim 1, characterized in that: The support frame (10) has tension straps (14) fixedly connected to both the left and right ends of the front side of the outside, and the other end of the tension straps (14) is fixedly connected to both the left and right ends of the rear side of the frame (1).

6. A lightweight, easily movable staircase according to claim 3, characterized in that: The extension belt (20) is externally slidably connected to the outer wall of the rotating roller (19), and the rotating plate (23) is externally rotatably connected to the inside of the connecting frame (21).

7. A lightweight, easily movable staircase according to claim 3, characterized in that: The outside of the extension band (20) is in contact with the front side of the adjustment band (17), and the outside of the latch (24) is engaged with the inside of the extension band (20).

8. A lightweight, easily movable staircase according to claim 2, characterized in that: One end of the spring (8) is fixedly connected to the left and right sides of the outside of the bearing plate (6), and the other end of the spring (8) is fixedly connected to the left and right sides of the outside of the connecting plate (5).

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