Telescopic herringbone ladder

Abstract

The utility model relates to the technical field of herringbone ladders, and provides a telescopic herringbone ladder which comprises a first ladder section, one end of the second ladder section is hinged with the first ladder section; the telescopic legs are arranged on the first ladder section and / or the second ladder section, one end of each telescopic leg is hinged to the first ladder section and / or the second ladder section, and the telescopic legs are used for supporting the first ladder section and / or the second ladder section after being stretched. By means of the technical scheme, the problem that in the prior art, telescopic legs of a herringbone ladder are fixedly arranged and cannot be adjusted according to the field height is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of herringbone ladders, and in particular to a telescopic herringbone ladder. Background Art

[0002] Most existing herringbone ladders utilize fixed-length telescopic legs, which cannot be adjusted to the specific height requirements of the work site. This makes them inconvenient to use and limits their applicability. Furthermore, in environments requiring insulation, such as power plants and chemical plants, traditional telescopic legs often lack sufficient insulation, posing a safety hazard. Therefore, developing a telescopic leg for a herringbone ladder with retractable, well-insulated design is of great significance. Utility Model Content

[0003] The utility model provides a retractable stepladder, which solves the problem in the related art that the retractable legs of the stepladder are fixed and cannot be adjusted according to the on-site height.

[0004] The technical solution of the utility model is as follows:

[0005] A retractable stepladder, comprising:

[0006] First stair section;

[0007] a second stair section, one end of which is hinged to the first stair section;

[0008] There are several telescopic legs, which are arranged on the first stair section and / or the second stair section. One end of the telescopic leg is hinged to the first stair section and / or the second stair section. After the telescopic leg is extended, it is used to support the first stair section and / or the second stair section.

[0009] As a further technical solution, the telescopic leg is a telescopic rod, and the telescopic leg includes:

[0010] a first set of rods, one end of which is hinged to the first ladder section or the second ladder section;

[0011] a second set of rods, slidably disposed on the first set of rods, the second set of rods sliding closer to or farther away from the first set of rods;

[0012] The locking sleeve is arranged on the second sleeve rod, and is used to lock or cancel the sliding of the second sleeve rod.

[0013] As a further technical solution, it also includes:

[0014] One end of the third stair section is slidably arranged on the first stair section, and the third stair section moves closer to or away from the first stair section after sliding.

[0015] As a further technical solution, it also includes:

[0016] A curved rod is detachably arranged at an end of the third stair section away from the first stair section, and the curved rod is used to hook an obstacle to prevent the third stair section from sliding relative to the first stair section.

[0017] As a further technical solution, it also includes:

[0018] a first pulley rotatably disposed on the first stair segment;

[0019] a second pulley, rotatably disposed on the third step;

[0020] The first safety rope is detachably arranged on the first stair segment and the third stair segment. The first safety rope is wound around the first pulley and the second pulley. The first safety rope is used to limit the third stair segment from sliding relative to the first stair segment.

[0021] As a further technical solution, it also includes:

[0022] The second safety rope is detachably arranged on the first ladder section and the second ladder section, and the second safety rope is used to limit the rotation of the first ladder section relative to the second ladder section.

[0023] As a further technical solution, it also includes:

[0024] There are a plurality of side support rods, which are arranged on the first stair segment and the second stair segment. The side support rods are used to increase the ground contact area of ​​the first stair segment and the second stair segment.

[0025] The working principle and beneficial effects of the utility model are as follows:

[0026] The utility model is composed of a first ladder section, a second ladder section and a plurality of telescopic legs, and the various components cooperate with each other, making the ladder more stable and reliable when in use. The first ladder section and the second ladder section are connected by a hinged manner, which is convenient for storage and carrying. The provision of the telescopic legs further enhances the stability of the ladder. One end of the telescopic leg is hinged to the first ladder section or the second ladder section, and can be adjusted according to different usage scenarios and needs to adapt to various terrains and working environments. The adjustability of the telescopic legs enables the ladder to remain stable on uneven ground, improving the safety of use. At the same time, the hinged connection method allows the telescopic legs to be easily folded, which is convenient for storage and transportation. The multiple telescopic legs work together to provide the ladder with stronger support force and reduce the risk of the ladder tipping over during use. Reasonable structural design and high-quality material selection ensure the strength and durability of the ladder, which can withstand a large weight and provide safety protection for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0028] Figure 1 This is a schematic diagram of the structure of the utility model;

[0029] Figure 2 This is a schematic structural diagram of the first stair section in the present invention;

[0030] Figure 3 For this utility model Figure 1 A local enlarged schematic diagram of point A in the middle.

[0031] In the figure: 1. First stair section, 2. Second stair section, 3. Telescopic legs, 4. First set of rods, 5. Second set of rods, 6. Locking sleeve, 7. Third stair section, 8. Curved rod, 9. First pulley, 10. Second pulley, 11. First safety rope, 12. Second safety rope, 13. Support rod. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without paying creative work. In some figures, components with the same structure or function are schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0034] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] Reference Figures 1 to 3, which is the first embodiment of the utility model, proposes a retractable herringbone ladder, including: a first ladder section 1; one end of the second ladder section 2 is hinged to the first ladder section 1; a plurality of retractable legs 3 are arranged on the first ladder section 1 and / or the second ladder section 2, one end of the retractable legs 3 is hinged to the first ladder section 1 and / or the second ladder section 2, and the retractable legs 3 are used to support the first ladder section 1 and the second ladder section 2 after being extended.

[0036] In this embodiment, the ladder is composed of a first ladder section 1, a second ladder section 2 and a plurality of telescopic legs 3. The various components cooperate with each other, making the ladder more stable and reliable when in use. The first ladder section 1 and the second ladder section 2 are connected by a hinged connection, which is convenient for storage and carrying. The provision of the telescopic legs 3 further enhances the stability of the ladder. One end of the telescopic leg 3 is hinged to the first ladder section 1 or the second ladder section 2, and can be adjusted according to different usage scenarios and needs to adapt to various terrains and working environments. The adjustability of the telescopic legs 3 enables the ladder to remain stable on uneven ground, improving the safety of use. At the same time, the hinged connection method allows the telescopic legs 3 to be easily folded for easy storage and transportation. The multiple telescopic legs 3 work together to provide the ladder with stronger support and reduce the risk of the ladder tipping over during use. The reasonable structural design and high-quality material selection ensure the strength and durability of the ladder, which can withstand a large weight and provide safety for the user.

[0037] As a further technical solution, the telescopic leg 3 is a telescopic rod, and the telescopic leg 3 includes: one end of a first set of rods 4 is hinged to the first ladder section 1 or the second ladder section 2; a second set of rods 5 is slidably arranged on the first set of rods 4, and the second set of rods 5 slides closer to or away from the first set of rods 4; a locking sleeve 6 is arranged on the second set of rods 5, and the locking sleeve 6 is used to lock or cancel the sliding of the second set of rods 5.

[0038] In this embodiment, the telescopic leg 3 consists of a first set of rods 4, a second set of rods 5, and a locking sleeve 6. One end of the first set of rods 4 is hinged to the ladder rung, ensuring a secure connection. The second set of rods 5 slides on the first set of rods 4, enabling flexible adjustment of the length of the telescopic leg 3. This design allows the telescopic leg 3 to be adjusted to suit various work scenarios when used at different heights. The locking sleeve 6 conveniently locks or unlocks the sliding of the second set of rods 5. To adjust the length of the telescopic leg 3, simply release the locking sleeve 6, slide the second set of rods 5 to the desired position, and then relock the locking sleeve 6. This simple and quick operation greatly enhances the convenience of ladder use. The adjustable length of the telescopic leg 3 allows for better adaptability to varying terrain. On uneven ground, adjusting the length of the telescopic leg 3 ensures that each support point of the ladder maintains full contact with the ground, thereby improving the ladder's stability. When the ladder is extended, the longer telescopic leg 3 provides a larger support area, further enhancing its stability and safety. Even when subjected to heavy weight or external forces, the ladder effectively prevents tipping over. When the ladder is not in use and needs to be stored, the second set of rods 5 of the telescopic legs 3 can be retracted into the first set of rods 4 and secured with locking sleeves 6. This significantly reduces the length of the telescopic legs 3, making the ladder more compact and easier to store and carry. The telescopic rod design of the telescopic legs 3, combined with the retractable ladder body, reduces the overall space occupied by the ladder when stored, making it convenient for users to store in limited space, such as at home, at work, or in the trunk of a car.

[0039] As a further technical solution, the present invention further includes: one end of the third stair section 7 is slidably arranged on the first stair section 1 , and the third stair section 7 moves closer to or away from the first stair section 1 after sliding.

[0040] In this embodiment, one end of the third rung 7 slides onto the first rung 1, increasing the overall height of the ladder and making it portable. This makes it easier and more convenient to store the ladder in a warehouse or garage or transport it to different work locations. This retractable design ensures that the ladder does not take up excessive space when not in use, making it particularly practical for locations with limited space. It also allows users to easily access the ladder whenever needed, improving work efficiency.

[0041] As a further technical solution, it also includes: a curved rod 8 is detachably arranged at an end of the third stair section 7 away from the first stair section 1, and the curved rod 8 is used to hook an obstacle to prevent the third stair section 7 from sliding relative to the first stair section 1.

[0042] In this embodiment, the curved rod 8 is detachably provided at the end of the third rung 7 away from the first rung 1. When the third rung 7 needs to be fixed to prevent it from sliding, the curved rod 8 can be installed. The curved rod 8 can hook obstacles and effectively prevent the third rung 7 from accidentally sliding relative to the first rung 1 during use, greatly reducing the safety risks caused by the ladder sliding. When working at heights, the stability of the ladder is of vital importance. With the fixing function of the curved rod 8, users can work on the ladder with greater peace of mind, without having to worry about the stability of the ladder all the time, thereby improving the safety and efficiency of the work. The detachable design of the curved rod 8 allows the operator to freely choose whether to install the ladder according to the terrain when the ladder is in use, thereby improving the adaptability to the terrain.

[0043] As a further technical solution, it also includes: a first pulley 9 is rotatably set on the first stair section 1; a second pulley 10 is rotatably set on the third stair section 7; a first safety rope 11 is detachably set on the first stair section 1 and the third stair section 7, and the first safety rope 11 is wound around the first pulley 9 and the second pulley 10. The first safety rope 11 is used to limit the third stair section 7 from sliding relative to the first stair section 1.

[0044] In this embodiment, the first safety rope 11 is wound around the first pulley 9 and the second pulley 10, and together with the curved rod 8 forms a double protection mechanism, further preventing the third ladder section 7 from accidentally sliding relative to the first ladder section 1. Even if the curved rod 8 becomes loose or fails in some cases, the first safety rope 11 can still play a role in limiting sliding, greatly improving the safety of ladder use. When working at heights, safety is the primary consideration. This double safety guarantee allows users to use ladders more confidently and reduces the risk of accidents caused by ladder sliding. The rotation setting of the first pulley 9 and the second pulley 10 makes the operation of the first safety rope 11 smoother. When the position of the third ladder section 7 needs to be adjusted, the safety rope can move flexibly as the ladder section slides without causing any jamming or obstruction. The first safety rope 11 is detachable for easy installation and disassembly.

[0045] As a further technical solution, the invention further includes: a second safety rope 12 detachably provided on the first stair section 1 and the second stair section 2 , and the second safety rope 12 is used to limit the rotation of the first stair section 1 relative to the second stair section 2 .

[0046] In this embodiment, the second safety rope 12 is detachably arranged on the first ladder section 1 and the second ladder section 2, which can effectively limit the rotation of the first ladder section 1 relative to the second ladder section 2. When using the ladder, especially when working at a high position, the stability of the ladder is crucial. If the first ladder section 1 and the second ladder section 2 rotate unexpectedly, it may cause the ladder to lose balance, which brings great security risks to the user. The presence of the second safety rope 12 can prevent this from happening, ensuring that the ladder always maintains a stable structure during use. When the user is working on the ladder, various forces in different directions will be generated, such as body movement, tool weight, etc. The second safety rope 12 can bear part of these forces, reducing the pressure on the hinge parts of the ladder, thereby prolonging the service life of the ladder and further improving the safety of use. The detachable design of the second safety rope 12 makes it convenient to remove it when it is not needed to limit the rotation of the ladder section, without affecting the normal folding and storage of the ladder. When specific work needs to be done using the ladder, the second safety rope 12 can be quickly installed, providing safety protection for the work. Whether on flat ground or uneven terrain, the second safety rope 12 can play its role in limiting the rotation of the ladder section, providing a stable working platform for the user.

[0047] As a further technical solution, it further comprises: a plurality of side support rods 13 are arranged on the first ladder section 1 and the second ladder section 2, and the side support rods 13 are used to increase the ground contact area of the first ladder section 1 and the second ladder section 2.

[0048] In this embodiment, the side support rods 13 are arranged on the first ladder section 1 and the second ladder section 2, which can effectively increase the ground contact area of the ladder section. When the ladder is placed on the ground, a larger ground contact area means more stable support. Whether on flat ground or slightly inclined terrain, the side support rods 13 can make the ladder more stable, reducing the risk of shaking and tilting. The arrangement of a plurality of side support rods 13 makes the ladder better adapt to various terrains. On uneven ground, the side support rods 13 can be adjusted according to the ups and downs of the ground, ensuring that all parts of the ladder can fully contact the ground, thereby improving the stability of the ladder. The side support rods 13 that increase the ground contact area can distribute the weight borne by the ladder, reducing the pressure on the ladder feet. This not only prolongs the service life of the ladder, but also reduces the risk of the ladder feet sinking into the ground or sliding, further improving the safety of the ladder.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered by the claims of the present application.

Claims

1. A retractable herringbone ladder, characterized in that: include: First step (1); A second stair section (2), one end of which is hinged to the first stair section (1); A plurality of telescopic legs (3) are provided on the first stair section (1) and / or the second stair section (2); one end of the telescopic leg (3) is hinged to the first stair section (1) and / or the second stair section (2); and the telescopic leg (3) is used to support the first stair section (1) and / or the second stair section (2) after being extended.

2. The retractable stepladder according to claim 1, characterized in that: The telescopic leg (3) is a telescopic rod, and the telescopic leg (3) comprises: A first set of rods (4), one end of which is hinged to the first ladder section (1) or the second ladder section (2); A second set of rods (5) is slidably arranged on the first set of rods (4), and the second set of rods (5) moves closer to or away from the first set of rods (4) after sliding; A locking sleeve (6) is provided on the second rod (5), and the locking sleeve (6) is used to lock or cancel the sliding of the second rod (5).

3. The retractable stepladder according to claim 1, characterized in that: Also includes: One end of the third stair section (7) is slidably arranged on the first stair section (1), and the third stair section (7) moves closer to or farther from the first stair section (1) after sliding.

4. The retractable stepladder according to claim 3, characterized in that: Also includes: A curved rod (8) is detachably arranged at one end of the third stair section (7) away from the first stair section (1), and the curved rod (8) is used to hook an obstacle to prevent the third stair section (7) from sliding relative to the first stair section (1).

5. The retractable stepladder according to claim 3, characterized in that: Also includes: A first pulley (9) rotatably mounted on the first stair segment (1); a second pulley (10) rotatably disposed on the third step (7); A first safety rope (11) is detachably arranged on the first ladder section (1) and the third ladder section (7), the first safety rope (11) being wound around the first pulley (9) and the second pulley (10), and the first safety rope (11) being used to limit the third ladder section (7) from sliding relative to the first ladder section (1).

6. The retractable stepladder according to claim 1, characterized in that: Also includes: A second safety rope (12) is detachably arranged on the first ladder section (1) and the second ladder section (2), and the second safety rope (12) is used to limit the rotation of the first ladder section (1) relative to the second ladder section (2).

7. The retractable stepladder according to claim 1, characterized in that: Also includes: There are a plurality of side support rods (13) provided on the first stair section (1) and the second stair section (2), and the side support rods (13) are used to increase the ground contact area of ​​the first stair section (1) and the second stair section (2).

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