A herringbone ladder with height adjustment function

Abstract

The utility model discloses a kind of herringbone ladder with height adjusting function, it is related to herringbone ladder technical field, including top plate, top plate outer wall left and right sides are symmetrically rotationally connected with connecting frame, the inner wall of each connecting frame is fixedly installed with ladder board in linear arrangement, left and right two connecting frames are fixedly connected with nylon connecting band, the utility model can change the height of device by the sliding between sliding sleeve and sliding plate, and by inserting fixed bolt into fixed jack and simultaneously with adjusting screw hole screw connection, the position between sliding plate and sliding sleeve can be fixed, so as to fix the height of device, so that personnel can adjust the height of device according to specific use scene needs, increase the use range when device is used, simultaneously, device can increase the friction between support base and ground by anti-skid tooth, to further increase the stability when device is used, make device more safe when using.

Description

Technical Field

[0001] This utility model relates to the field of A-frame ladder technology, and in particular to an A-frame ladder with height adjustment function. Background Technology

[0002] A-frame ladders are a type of climbing tool used for work in spaces above a flat surface (such as a roof). When in use, the front and rear ladder bars and the ground form an isosceles triangle. Practical A-frame ladders include fixed and movable types. Fixed A-frame ladders are used for temporary erection; movable A-frame ladders are made by connecting the tops of two ladders with hinges, allowing them to be folded up when moved. Due to their flexibility, they are widely used in electrical work. Early A-frame ladders were generally made of wood, but with the development of the metal industry, aluminum alloy materials are now more commonly used. Aluminum alloy A-frame ladders are lightweight, aesthetically pleasing, durable, and inexpensive, hence their widespread use.

[0003] Currently, both fixed and movable A-frame ladders have a fixed height, which cannot be adjusted to meet the needs of specific usage scenarios. This limits their application range. Furthermore, when using A-frame ladders for work, people often need to use tools on them, but current ladders do not provide convenient storage for tools and require frequent climbing, which is inconvenient.

[0004] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a height-adjustable A-frame ladder, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A stepladder with height adjustment function, comprising a top plate, connecting frames symmetrically and rotatably connected to the left and right sides of the outer wall of the top plate, ladder plates linearly and fixedly installed on the inner wall of each connecting frame, a nylon connecting strap fixedly connected between the left and right connecting frames, sliding plates fixedly connected to the front and rear sides of the outer walls of the left and right connecting frames, a sliding sleeve slidably connected to the side wall of each sliding plate, and a connecting plate linearly and fixedly connected between each pair of sliding sleeves on the left and right sides.

[0007] As a further technical solution of this utility model, each of the sliding plates has linearly arranged adjustment threaded holes on its sidewalls, and each of the sliding sleeves has a fixing insertion hole on its sidewalls, into which a fixing bolt that is threadedly connected to the adjustment threaded hole is inserted.

[0008] As a further technical solution of this utility model, the spacing between the ladder plates and the spacing between the connecting plates are the same.

[0009] As a further technical solution of this utility model, a support seat is fixedly installed at the lower end of the outer wall of each pair of sliding sleeves on the left and right sides, and anti-slip teeth are fixedly connected to the lower end of the outer wall of each of the two support seats.

[0010] As a further technical solution of this utility model, the top plate is fixedly connected to the front and rear sides of the outer wall, and the inner walls of the front and rear fixed sleeves are slidably connected to the sliding rods. The upper end of the outer wall of the sliding rod is fixedly connected to the upper plate, and the lower end of the outer wall of the sliding rod is fixedly connected to the storage frame.

[0011] As a further technical solution of this utility model, a pull handle is fixedly installed on the upper end of the outer wall of the upper plate.

[0012] This utility model provides a height-adjustable A-frame ladder, which has the following advantages compared with the prior art:

[0013] 1. This utility model can change the height of the device by sliding between the sliding sleeve and the sliding plate. By inserting the fixing bolt into the fixing hole and simultaneously connecting it with the adjusting threaded hole, the position between the sliding plate and the sliding sleeve can be fixed, thereby fixing the height of the device. This allows personnel to adjust the height of the device according to specific usage scenarios, increasing the usability of the device. At the same time, the device can increase the friction between the support base and the ground through anti-slip teeth, thereby further increasing the stability of the device during use and making the device safer to use.

[0014] 2. When using this utility model, personnel can store the tools they need in the storage box. When these tools are needed, personnel can pull the handle upwards to move the sliding rod and the storage box upwards. At this time, personnel can take the tools in the storage box and store items in the storage box, so that personnel do not need to frequently go up and down the device, thereby improving the convenience of using the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This is a schematic diagram of the top plate of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the connecting frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the sliding sleeve and connecting plate of this utility model.

[0020] In the diagram: 100, top plate; 200, connecting frame; 210, ladder plate; 220, nylon connecting strap; 300, sliding plate; 310, sliding sleeve; 320, connecting plate; 400, adjusting threaded hole; 410, fixing hole; 420, fixing bolt; 500, support base; 510, anti-slip teeth; 600, fixing sleeve; 610, sliding rod; 620, top plate; 630, storage frame; 640, pull handle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5This utility model provides a height-adjustable A-frame ladder technical solution: It includes a top plate 100, with connecting frames 200 symmetrically and rotatably connected to the left and right sides of the outer wall of the top plate 100. Ladder plates 210 are linearly arranged and fixedly installed on the inner wall of each connecting frame 200. A nylon connecting strap 220 is fixedly connected between the left and right connecting frames 200. Sliding plates 300 are fixedly connected to the front and rear sides of the outer walls of the left and right connecting frames 200. Sliding sleeves 310 are slidably connected to the side walls of each sliding plate 300. Connecting plates are linearly arranged and fixedly connected between each pair of sliding sleeves 310 on the left and right sides. The spacing between the ladder plates 210 and the connecting plates 320 is the same, so that when the sliding sleeve 310 and the sliding plate 300 slide, the ladder plate 210 can overlap with the connecting plate 320. The device adjusts the opening angle between the two connecting frames 200 by rotating the top plate 100 and the two connecting frames 200. At the same time, the maximum opening angle between the two connecting frames 200 is limited by the nylon connecting belt 220, so that the device can be used stably. The height of the device can be changed by sliding between the sliding sleeve 310 and the sliding plate 300. Each sliding plate 300 has linearly arranged adjusting threaded holes 400 on its sidewall, and each sliding sleeve 310 has a fixing insertion hole 410 on its sidewall. A fixing bolt 420, threadedly connected to the adjusting threaded hole 400, is inserted into the fixing insertion hole 410. By inserting the fixing bolt 420 into the fixing insertion hole 410 and threading it into the adjusting threaded hole 400, the position between the sliding plate 300 and the sliding sleeve 310 can be fixed, thereby fixing the height of the device. A support base 500 is fixedly installed on the lower end of the outer wall of each pair of left and right sliding sleeves 310. Anti-slip teeth 510 are fixedly connected to the lower end of the outer wall of each support base 500. The support base 500 supports the device on the ground, and the anti-slip teeth 510 increase the friction between the support base 500 and the ground, thereby further increasing the stability of the device during use.

[0023] like Figures 1-3 As shown, fixed sleeves 600 are fixedly connected to the front and rear sides of the outer wall of the top plate 100. Sliding rods 610 are slidably connected to the inner walls of both the front and rear fixed sleeves 600. An upper plate 620 is fixedly connected to the upper end of the outer wall of the sliding rod 610, and a storage frame 630 is fixedly connected to the lower end of the outer wall of the sliding rod 610. Tools that need to be used can be stored in the storage frame 630. A pull handle 640 is fixedly installed on the upper end of the outer wall of the upper plate 620. When tools are needed, the user can pull the pull handle 640 upwards, causing the sliding rod 610 and the storage frame 630 to move upwards. At this time, the user can retrieve the tools from the storage frame 630 and store items in the storage frame 630.

[0024] The working principle of this utility model is as follows: During use, the device adjusts the opening angle between the two connecting frames 200 by rotating the top plate 100 and the two connecting frames 200. Simultaneously, the nylon connecting strap 220 limits the maximum opening angle between the two connecting frames 200, ensuring stable use. The height of the device can be changed by sliding between the sliding sleeve 310 and the sliding plate 300. By inserting the fixing bolt 420 into the fixing hole 410 and threading it with the adjusting threaded hole 400, the position between the sliding plate 300 and the sliding sleeve 310 can be fixed, thus fixing the height of the device. Meanwhile, personnel can store tools in the storage box 630. When tools are needed, personnel can pull the handle 640 upwards, causing the sliding rod 610 and the storage box 630 to move upwards, allowing personnel to retrieve tools and store items in the storage box 630.

[0025] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A-frame ladder with height adjustment function, comprising a top plate (100), characterized in that: The top plate (100) has connecting frames (200) symmetrically rotatably connected to the left and right sides of its outer wall. Each connecting frame (200) has a ladder plate (210) linearly arranged and fixedly installed on its inner wall. A nylon connecting strap (220) is fixedly connected between the left and right connecting frames (200). Sliding plates (300) are fixedly connected to the front and rear sides of the outer walls of the left and right connecting frames (200). Each sliding plate (300) has a sliding sleeve (310) slidably connected to its side wall. Each pair of sliding sleeves (310) is linearly arranged and fixedly connected to a connecting plate (320).

2. The A-frame ladder with height adjustment function according to claim 1, characterized in that, Each of the sliding plates (300) has linearly arranged adjustment threaded holes (400) on its sidewall, and each of the sliding sleeves (310) has a fixing insertion hole (410) on its sidewall, into which a fixing bolt (420) is inserted and threadedly connected to the adjustment threaded hole (400).

3. The A-frame ladder with height adjustment function according to claim 1, characterized in that, The spacing between the ladder plates (210) and the spacing between the connecting plates (320) are the same.

4. A-frame ladder with height adjustment function according to claim 1, characterized in that, Each pair of sliding sleeves (310) is fixedly installed with a support base (500) at the lower end of its outer wall, and anti-slip teeth (510) are fixedly connected to the lower end of the outer wall of each of the two support bases (500).

5. A stepladder with height adjustment function according to claim 1, characterized in that, The top plate (100) is fixedly connected to the front and rear sides of the outer wall with fixed sleeves (600), and the inner walls of the front and rear fixed sleeves (600) are slidably connected with sliding rods (610). The upper end of the outer wall of the sliding rod (610) is fixedly connected to an upper plate (620), and the lower end of the outer wall of the sliding rod (610) is fixedly connected to a storage frame (630).

6. A stepladder with height adjustment function according to claim 5, characterized in that, A pull handle (640) is fixedly installed on the upper end of the outer wall of the upper plate (620).

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