Multi-directional adaptive ladder top support structure and ladder fixtures

Abstract

This utility model provides a multi-directional adaptive ladder top support structure and ladder, relating to the technical field of ladders and their accessories. It includes a guide bracket and at least two sets of support components mounted on the guide bracket. The guide bracket has an internal installation space. Each set of support components includes a lead screw, an adjusting nut, a locking handle, and a ball joint. The lead screw includes a rod body and a ball joint connected to a first end of the rod body. The rod body passes through the guide bracket, and its outer surface has a lead screw thread extending to a second end. The adjusting nut is located inside the installation space and threaded onto the outside of the rod body. The locking handle is threaded to the second end of the rod body. The ball joint is connected to a ball joint hinge, and its surface facing away from the ball joint has an anti-slip structure. The multi-directional adaptive ladder top support structure provided by this utility model can support corner walls, flat walls, stepped walls, cylindrical walls, or other multi-angle walls. The adjustment method is simple and efficient, the support capacity is strong, and it can effectively prevent the ladder from slipping.

Description

Technical Field

[0001] This utility model relates to the technical field of ladders and their accessories, and in particular to a multi-directional adaptive ladder top support structure and ladder. Background Technology

[0002] Ladders are a common climbing tool used in construction, decoration, and maintenance work, widely applied in both indoor and outdoor high-altitude operations, such as indoor renovation and repair, and outdoor eaves work. To ensure safety and prevent slippage accidents during ladder use, existing technologies typically include anti-slip pads at the top and bottom of the ladder to increase friction between the ladder and the ground or building. However, due to the limited contact area between the anti-slip pads and the building, their anti-slip effect often falls short of practical requirements.

[0003] To improve slip resistance, some ladders have a tripod hinged at the top via a pin, with an anti-slip surface on one side of the tripod to further increase friction with the building. However, this structure has certain limitations: the direction of rotation of the tripod is fixed, and it can only be used on building surfaces with the same shape as the anti-slip surface. It cannot adapt to building surfaces with different curvatures or angles, resulting in poor versatility and limiting the ladder's applicability in different work scenarios. Utility Model Content

[0004] The purpose of this invention is to provide a multi-directional adaptive ladder top support structure and ladder to alleviate the aforementioned technical problems in the prior art.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] In a first aspect, this utility model provides a multi-directional adaptive ladder top support structure, including a guide bracket and at least two sets of support components installed on the guide bracket;

[0007] The guide bracket has an internal installation space;

[0008] Each group of support components includes:

[0009] A lead screw includes a rod body and a ball head fixed or integrally connected to a first end of the rod body, the rod body passing through the guide bracket, and a lead screw thread provided on the outer surface of the rod body, the lead screw thread extending to a second end of the rod body;

[0010] An adjusting nut is located inside the mounting space and threaded onto the outside of the rod body;

[0011] The locking handle is threadedly connected to the second end of the rod.

[0012] The ball joint seat is connected to the ball joint hinge, and its surface facing away from the ball joint has an anti-slip structure.

[0013] In an optional embodiment, the guide bracket is a vertically continuous cuboid frame, the interior of which encloses the installation space, and the two opposite side plates of the cuboid frame in the width direction are respectively provided with limiting holes; the rod passes through the limiting holes.

[0014] In an optional embodiment, the limiting hole is a limiting elongated hole whose long axis extends along the length direction of the cuboid frame, and the cross-section of the rod body with the screw thread part is a racetrack-shaped cross-section. The racetrack-shaped cross-section is straight on both sides opposite to each other along the width direction of the limiting elongated hole, and bulges outward and bends into an arc shape on both sides opposite to each other along the length direction of the limiting elongated hole.

[0015] In an optional embodiment, mounting holes are provided on the two opposite side plates of the cuboid frame along its length, for inserting connectors to connect the cuboid frame to the upper end of the ladder frame.

[0016] In an optional embodiment, the cuboid frame includes a first U-shaped plate frame, a second U-shaped plate frame, and two sets of end locking members;

[0017] The first U-shaped plate frame and the second U-shaped plate frame are connected and their end areas overlap each other. The overlapping parts are fixedly connected by a set of end locking members to form two opposite plate frames of the cuboid frame along the length direction.

[0018] In an optional embodiment, the ball head seat includes a first hemisphere and a second hemisphere that are sleeved on the outside of the ball head and abut against each other.

[0019] In an optional embodiment, the first hemispherical seat and the second hemispherical seat are fixed together by a fastener.

[0020] In an optional embodiment, the outer surface of the adjusting nut is provided with anti-slip texture.

[0021] In an optional embodiment, both the adjusting nut and the locking handle include their respective housings and a transmission nut fixedly connected inside the housings.

[0022] Secondly, this utility model provides a ladder, including a ladder frame and a multi-directional adaptive ladder top support structure as described in any of the foregoing embodiments, wherein the guide bracket is fixedly installed on the upper end of the ladder frame.

[0023] This utility model provides at least the following beneficial effects:

[0024] In use, the guide bracket of the multi-directional adaptive ladder top support structure is fixedly connected to the upper end of the ladder frame through the connector. Adjust each set of support components according to the curvature or angle of the building surface. When adjusting, first loosen the locking handle relative to the rod body, and then turn the adjusting nut to extend the rod body to the first end or retract it to the second end, so as to adjust the length of the first end of the screw rod extending out of the guide bracket installation space. When the upper end of the ladder is against the building surface, the anti-slip structure can adaptively stick to the building surface under the universal action of the ball head seat and the ball head. After adjustment, tighten the locking handle relative to the screw rod.

[0025] The above adjustment method can be applied to corner walls, flat walls, stepped walls, cylindrical walls or other multi-angle walls. The adjustment method is simple and efficient, with strong support capacity, and can effectively prevent the ladder from slipping. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 An exploded view of the overall structure of the multi-directional adaptive ladder top support structure provided in this embodiment of the utility model;

[0028] Figure 2 This is an assembly drawing of the multi-directional adaptive ladder top support structure installed on the upper end of the ladder frame in an embodiment of this utility model;

[0029] Figure 3 A schematic diagram illustrating an application scenario of the ladder provided in this embodiment of the utility model;

[0030] Figure 4 This is a schematic diagram illustrating a second application scenario of the ladder provided in this embodiment of the utility model.

[0031] Figure 5 This is a schematic diagram illustrating the application scenario three of the ladder provided in this embodiment of the utility model;

[0032] Figure 6 This is a schematic diagram illustrating the application scenario four of the ladder provided in this embodiment of the utility model.

[0033] Icons: 1-Guide bracket; 11-First U-shaped plate frame; 12-Second U-shaped plate frame; 13-End locking component; 101-Limiting hole; 102-Mounting hole; 2-Lead screw; 21-Rod body; 211-Lead screw thread; 212-Racetrack-shaped section; 22-Ball head; 3-Adjusting nut; 4-Locking handle; 5-Ball head seat; 51-First hemispherical seat; 52-Second hemispherical seat; 6-Anti-slip structure; 7-Ladder frame. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, the terms "horizontal" and "vertical" do not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" 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 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 based on the specific circumstances.

[0040] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] First aspect

[0042] This embodiment provides a multi-directional adaptive ladder top support structure, referring to... Figure 1 The multi-directional adaptive ladder top support structure includes a guide bracket 1 and at least two sets of support components mounted on the guide bracket 1. The guide bracket 1 has an internal installation space. Each set of support components includes a lead screw 2, an adjusting nut 3, a locking handle 4, and a ball joint seat 5. Specifically, the lead screw 2 includes a rod body 21 and a ball joint 22 fixedly or integrally connected to the first end of the rod body 21. The rod body 21 passes through the guide bracket 1, and its outer surface is provided with a lead screw thread 211 extending to the second end of the rod body 21. The adjusting nut 3 is located inside the installation space of the guide bracket 1 and threaded onto the outside of the rod body 21. The locking handle 4 is threadedly connected to the second end of the rod body 21. The ball joint seat 5 is ball-jointed to the ball joint 22, and an anti-slip structure 6 is provided on the side of the ball joint seat 5 facing away from the ball joint 22.

[0043] The usage method of this embodiment is as follows: Figures 2 to 6 :

[0044] like Figure 2 As shown, the guide bracket 1 of the multi-directional adaptive ladder top support structure is fixedly connected to the upper end of the ladder frame 7 through a connector. The support components are adjusted according to the curvature or angle of the building surface. During adjustment, first loosen the locking handle 4 relative to the rod 21, and then turn the adjusting nut 3 to extend the rod 21 to the first end or retract it to the second end, so as to adjust the length of the first end of the rod 21 of the screw 2 extending out of the installation space of the guide bracket 1. When the upper end of the ladder is against the building surface, the anti-slip structure 6 can adaptively stick to the building surface under the universal action of the ball head seat 5 and the ball head 22. After adjustment, tighten the locking handle 4 relative to the screw 2.

[0045] The above adjustment methods can be applied to, for example, Figure 3 The corner wall shown, such as Figure 4 The smooth wall surface shown is as follows: Figure 4 The stepped wall shown, as Figure 5 The cylindrical wall shown, or other multi-angled walls, offer a simple and efficient adjustment method with strong support, effectively preventing the ladder from slipping.

[0046] In this embodiment, the anti-slip structure 6 can be an anti-slip texture provided on the side surface of the ball joint 5 away from the ball head 22, or it can be an anti-slip pad that is glued, welded, or fixedly connected to the side surface of the ball joint 5 away from the ball head 22 by screws or the like. The anti-slip pad can be made of rubber material and has anti-slip texture of any shape to increase the coefficient of friction between the anti-slip pad and the building surface, improve the anti-slip ability, and the anti-slip pad can also protect the side surface of the ball joint 5 away from the ball head 22 to prevent the ball joint 5 from being damaged by bumps.

[0047] Reference Figure 1 and Figure 2 In an optional embodiment of this example, the guide bracket 1 is a cuboid frame that runs vertically through the inside of the cuboid frame, which encloses the aforementioned installation space. Limiting holes 101 are respectively provided on the two opposite side plates of the cuboid frame in the width direction; the rod 21 of the lead screw 2 passes through the limiting holes 101.

[0048] Reference Figure 1 In an optional embodiment of this example, the aforementioned limiting hole 101 is a limiting elongated hole whose long axis extends along the length direction of the cuboid frame. The cross-section of the part of the lead screw 2 body 21 with the lead screw thread 211 is a racetrack-shaped section 212. This racetrack-shaped section 212 is similar to the shape of a racetrack or a capsule. Its two sides opposite to each other along the width direction of the limiting elongated hole are straight, and its two sides opposite to each other along the length direction of the limiting elongated hole are convex and curved outward into an arc shape. In this optional embodiment, the lateral spacing of the rods 21 of adjacent lead screws 2 can be adjusted by moving each lead screw 2 along the limiting elongated hole, so as to further improve the support adaptability to walls at different angles. In addition, when the cross section of the rod 21 is circular, when rotating the adjusting nut 3, the user needs to hold the rod 21 or use other auxiliary tools to prevent the rod 21 from rotating on its own. In contrast, the design of the racetrack-shaped cross section 212 of the rod 21 in this optional embodiment can limit the circumferential direction of the part of the lead screw 2 rod 21 with the lead screw thread 211, preventing the rod 21 from rotating on its own when rotating the adjusting nut 3, making the operation more convenient for the user.

[0049] Reference Figure 1In an optional embodiment of this example, mounting holes 102 are provided on the opposite side plates of the cuboid frame (guide bracket 1) along its length, for inserting connectors to connect the cuboid frame (guide bracket 1) to the upper end of the ladder frame 7. The connectors may be, but are not limited to, bolt and nut assemblies. Ladder frame mounting holes are provided on both sides of the upper end of the ladder frame 7. Bolts are passed through the mounting holes 102 on the cuboid frame (guide bracket 1) and the ladder frame mounting holes on the ladder frame 7, respectively, and then locked with nuts to connect the cuboid frame (guide bracket 1) to the upper end of the ladder frame 7. In addition to bolt and nut assemblies, the connectors may also be clamp structures or other connector structures, which are inserted into the mounting holes 102 on the cuboid frame (guide bracket 1) and fixed to both sides of the upper end of the ladder frame 7.

[0050] To facilitate the assembly between the guide bracket 1 and the support assembly, in an optional embodiment of this example, the cuboid frame (guide bracket 1) includes a first U-shaped plate frame 11, a second U-shaped plate frame 12, and two sets of end locking members 13; the first U-shaped plate frame 11 and the second U-shaped plate frame 12 are connected and their end areas overlap each other, and the overlapping parts are respectively fixedly connected by a set of end locking members 13 to form two opposite plate frames along the length direction of the cuboid frame; in this optional embodiment, the end locking member 13 may be, but is not limited to, a bolt and nut assembly, and preferably, but not limited to, the connector and the connector that passes through the mounting hole 102 provided in the cuboid frame (guide bracket 1) to connect the cuboid frame (guide bracket 1) to the upper end of the ladder frame 7 are the same structural members.

[0051] To facilitate the assembly between the ball head seat 5 and the ball head 22, in an optional embodiment of this invention, the ball head seat 5 includes a first hemispherical seat 51 and a second hemispherical seat 52 that are sleeved on the outside of the ball head 22 and are mated to each other; the mating method includes, but is not limited to, snap-fit, or the first hemispherical seat 51 and the second hemispherical seat 52 are fixed together by a fastener, which may be, but is not limited to, a pin or bolt and nut assembly or a rivet or other fastener.

[0052] In an optional embodiment of this example, the outer surface of the adjusting nut 3 is provided with anti-slip texture to increase the friction between the adjusting nut 3 and the outer surface of the adjusting nut 3 when gripping it.

[0053] In an optional embodiment of this example, both the adjusting nut 3 and the locking handle 4 include their own housings and a transmission nut fixedly connected inside the housings. The housings may be made of nylon material, but are not limited to this. The transmission nut is a rigid structural component that covers and is fixed inside the housings to ensure the strength and reliability of the threaded connection.

[0054] Second aspect

[0055] This embodiment also provides a ladder, including a ladder frame 7 and a multi-directional adaptive ladder top support structure provided in any optional embodiment of the first aspect, wherein the guide bracket 1 of the multi-directional adaptive ladder top support structure is fixedly installed on the upper end of the ladder frame 7.

[0056] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments in this specification are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A multi-directional adaptive ladder top support structure, characterized in that: Includes a guide bracket and at least two sets of support assemblies mounted on the guide bracket; The guide bracket has an internal installation space; Each group of support components includes: A lead screw includes a rod body and a ball head fixed or integrally connected to a first end of the rod body, the rod body passing through the guide bracket, and a lead screw thread provided on the outer surface of the rod body, the lead screw thread extending to a second end of the rod body; An adjusting nut is located inside the mounting space and threaded onto the outside of the rod body; The locking handle is threadedly connected to the second end of the rod. The ball joint seat is connected to the ball joint hinge, and its surface facing away from the ball joint has an anti-slip structure.

2. The multi-directional adaptive ladder top support structure according to claim 1, characterized in that: The guide bracket is a vertically continuous cuboid frame, which encloses the installation space. Limiting holes are provided on the opposite side plates of the cuboid frame in the width direction. The rod passes through the limiting holes.

3. The multi-directional adaptive ladder top support structure according to claim 2, characterized in that: The limiting hole is a limiting elongated hole whose long axis extends along the length direction of the cuboid frame. The cross-section of the rod body with the screw thread is a racetrack-shaped section. The racetrack-shaped section is straight on both sides opposite to each other along the width direction of the limiting elongated hole, and bulges outward into an arc shape on both sides opposite to each other along the length direction of the limiting elongated hole.

4. The multi-directional adaptive ladder top support structure according to claim 2, characterized in that: Mounting holes are provided on the two opposite side plates of the cuboid frame along its length, for inserting connectors to connect the cuboid frame to the upper end of the ladder frame.

5. The multi-directional adaptive ladder top support structure according to claim 2, characterized in that: The cuboid frame includes a first U-shaped plate frame, a second U-shaped plate frame, and two sets of end locking components; The first U-shaped plate frame and the second U-shaped plate frame are connected and their end areas overlap each other. The overlapping parts are fixedly connected by a set of end locking members to form two opposite plate frames of the cuboid frame along the length direction.

6. The multi-directional adaptive ladder top support structure according to claim 1, characterized in that: The ball head seat includes a first hemispherical seat and a second hemispherical seat that are sleeved on the outside of the ball head and are mated to each other.

7. The multi-directional adaptive ladder top support structure according to claim 6, characterized in that: The first hemispherical seat and the second hemispherical seat are fixed together by fasteners.

8. The multi-directional adaptive ladder top support structure according to claim 1, characterized in that: The outer surface of the adjusting nut is provided with anti-slip texture.

9. The multi-directional adaptive ladder top support structure according to claim 1, characterized in that: Both the adjusting nut and the locking handle include their respective housings and a transmission nut fixedly connected inside the housings.

10. A ladder, characterized in that: The ladder includes a ladder frame and a multi-directional adaptive ladder top support structure as described in any one of claims 1 to 9, wherein the guide bracket is fixedly installed at the upper end of the ladder frame.

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