A multi-layer aluminum ladder with stable structure
By setting a cone rod and a hollow box between the upper end of the supporting column of the aluminum ladder and the wall, the friction is increased, and the contraction of the cone rod is achieved through the cooperation of the tensile spring and the guide rod, the problem of sliding and tilting caused by insufficient friction is solved, and the stability and safety of the ladder are improved.
Patent Information
- Application Number
- CN202421303698.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-07
AI Technical Summary
Existing aluminum ladders are prone to slip and tipping due to insufficient friction during use, causing safety hazards.
A multi-layer aluminum ladder with stable structure is designed. By setting a cone-snail rod and a hollow box between the upper end of the supporting column and the wall, the friction is increased; and by the cooperation of the tensile spring and the guide rod, the cone-snail rod is achieved to prevent accidental injury of the user.
It effectively improves the stability and safety of the ladder, prevents sliding and falling, and prevents people from falling and accidents to the greatest extent.
Smart Images
Figure CN222746001U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ladders, in particular to a multi-layer aluminum ladder with a stable structure. Background Art
[0002] Ladders are daily necessities, made of two long thick poles with a crossbar in the middle suitable for climbing, and are used for climbing. Aluminum alloy ladders are made of high-strength aluminum alloy materials, which are characterized by light weight and high strength. It greatly facilitates the work intensity of construction workers.
[0003] When some existing aluminum ladders are in use, one end of the ladder is usually directly in contact with the ground and the other end is in contact with the wall. Then, when the ground end slides, the other end of the ladder is in contact with the wall and the friction is small, which makes it easy for the ladder to slide along the lower end, causing the ladder to fall.
[0004] In view of the above problems, a multi-layer aluminum ladder with a stable structure is proposed. Utility Model Content
[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a multi-layer aluminum ladder with a stable structure, which can solve the problems of the background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-layer aluminum ladder with a stable structure, comprising two supporting columns, a plurality of supporting cross bars are fixedly installed between the two supporting columns, an inner supporting column is fixedly installed inside the supporting columns, bolts are threadedly connected on both sides of the two supporting columns, connecting plates are rotatably connected to the two bolts, handles are fixedly installed on the two bolts, a hollow box is fixedly installed on the two connecting plates, a movable inner plate is slidably connected to the inside of the hollow box, a conical barb rod is fixedly installed on one side of the movable inner plate, a socket is opened on one side of the hollow box, and the conical barb rod is slidably connected inside the socket.
[0007] Preferably, two fixing blocks are fixedly mounted on one side of the movable inner plate.
[0008] Preferably, the interiors of the two fixed blocks are rotatably connected with rotating wheels, the interior of the hollow box is fixedly installed with guide rods, and the surfaces of the guide rods are slidably connected with the interior of the movable inner plate.
[0009] Preferably, a tension spring is movably sleeved on the surface of the guide rod, one end of the tension spring close to the movable inner plate is fixedly connected to the movable inner plate, and one end of the tension spring away from the movable inner plate is fixedly connected to the inner wall of the hollow box.
[0010] Preferably, a threaded rod is rotatably connected to the interior of the hollow box, and the threads on the surface of the threaded rod are arranged in opposite directions.
[0011] Preferably, extrusion blocks are threadedly connected to opposite threads on the surface of the threaded rod, the two rotating wheels are in contact with the surfaces of the two extrusion blocks respectively, and the opposite sides of the two extrusion blocks are inclined.
[0012] Preferably, baffles are fixedly mounted on one side of the two extrusion blocks close to the movable inner plate.
[0013] Preferably, two fixed limiting rods are fixedly installed inside the hollow box, and the two fixed limiting rods are both slidably connected to the inside of the two extrusion blocks.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] (1) The multi-layer aluminum ladder with a stable structure increases the friction between the upper end of the supporting column and the wall through the arrangement of the conical spike rod and the hollow box, thereby preventing the ladder from sliding down, improving the safety and stability of the device, and avoiding people from falling to the greatest extent, thereby preventing accidents.
[0016] (2) The multi-layer aluminum ladder has a stable structure. The two rotating wheels slide along the inclined surfaces of the two extrusion blocks, so that the movable inner plate slides on the guide rod through the tension of the tension spring, thereby facilitating the retraction of the cone rod into the interior of the insertion hole, thereby preventing accidental injury to the user during transportation or handling, improving the effect on the user, and thus avoiding injury to the user to the greatest extent possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0018] Figure 1 This is a schematic diagram of the structure of a multi-layer aluminum ladder with a stable structure according to the utility model;
[0019] Figure 2 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;
[0020] Figure 3 It is a schematic diagram of the hollow box of the utility model;
[0021] Figure 4 It is the internal schematic diagram of the hollow box of the utility model.
[0022] Figure numerals: 1. Support column; 2. Support cross bar; 3. Connecting plate; 4. Hollow box; 5. Threaded rod; 6. Bolt; 7. Handle; 8. Inner support column; 9. Socket; 10. Conical rod; 11. Moving inner plate; 12. Fixed block; 13. Rotating wheel; 14. Baffle; 15. Extrusion block; 16. Fixed limiting rod; 17. Guide rod; 18. Tension spring. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.
[0025] See also Figure 1-4 The utility model provides a technical solution: a multi-layer aluminum ladder with a stable structure, comprising two support columns 1, a plurality of support cross bars 2 are fixedly installed between the two support columns 1, and an inner support column 8 is fixedly installed inside the support column 1.
[0026] By providing the inner support column 8 , it is convenient to design the support column 1 into a multi-layer structure, thereby preventing the support column 1 from bending and improving the strength of the support column 1 .
[0027] Bolts 6 are threadedly connected on both sides of the two supporting columns 1, connecting plates 3 are rotatably connected to the two bolts 6, handles 7 are fixedly installed on the two bolts 6, a hollow box 4 is fixedly installed on the two connecting plates 3, a movable inner plate 11 is slidably connected to the inside of the hollow box 4, a conical rod 9 is fixedly installed on one side of the movable inner plate 11, a socket 10 is opened on one side of the hollow box 4, and the conical rod 9 is slidably connected inside the socket 10.
[0028] Turn the handle 7 to rotate the bolt 6, so that the connecting piece 3 is no longer squeezed, and the angles of the two connecting pieces 3 and the hollow box 4 are adjusted, so that the hollow box 4 is parallel to the wall. Through the arrangement of the tapered rod 9 and the hollow box 4, the friction between the upper end of the supporting column 1 and the wall is increased, thereby preventing the phenomenon of sliding down, improving the safety and stability of the use of the device, avoiding the phenomenon of people falling to the greatest extent, and preventing the occurrence of accidents.
[0029] Two fixed blocks 12 are fixedly installed on one side of the movable inner plate 11, and the interiors of the two fixed blocks 12 are rotatably connected with rotating wheels 13. A guide rod 17 is fixedly installed inside the hollow box 4, and the surface of the guide rod 17 is slidably connected to the interior of the movable inner plate 11. A tension spring 18 is movably sleeved on the surface of the guide rod 17, and the end of the tension spring 18 close to the movable inner plate 11 is fixedly connected to the movable inner plate 11, and the end of the tension spring 18 away from the movable inner plate 11 is fixedly connected to the inner wall of the hollow box 4. A threaded rod 5 is rotatably connected inside the hollow box 4, and the threads on the surfaces of the threaded rod 5 are arranged in opposite directions. Extrusion blocks 15 are respectively threadedly connected at the opposite threads on the surfaces of the threaded rod 5. The two rotating wheels 13 are respectively in contact with the surfaces of the two extrusion blocks 15, and the opposite sides of the two extrusion blocks 15 are inclined. Baffles 14 are fixedly installed on the sides of the two extrusion blocks 15 close to the movable inner plate 11, and two fixed limiting rods 16 are fixedly installed inside the hollow box 4, and the two fixed limiting rods 16 are both slidably connected to the interiors of the two extrusion blocks 15.
[0030] Rotate the threaded rod 5 to move the two extrusion blocks 15 away from each other, and then make the two extrusion blocks 15 slide on the two fixed limiting rods 16, so that the two extrusion blocks 15 no longer squeeze the two rotating wheels 13, and make the two rotating wheels 13 slide along the inclined surfaces of the two extrusion blocks 15, so that the movable inner plate 11 slides on the guide rod 17 through the tension of the tension spring 18, so as to facilitate the retraction of the cone thorn rod 9 into the interior of the insertion hole 10, prevent accidental injury to the user during transportation or handling, improve the effect of the method on the user, and thus avoid the user from being injured to the greatest extent possible.
[0031] Working principle:
[0032] Turn the handle 7 to rotate the bolt 6, so that the connecting piece 3 is no longer squeezed, and the angles of the two connecting pieces 3 and the hollow box 4 are adjusted to make the hollow box 4 parallel to the wall. The friction between the upper end of the supporting column 1 and the wall is increased by setting the conical rod 9 and the hollow box 4, thereby preventing the sliding phenomenon.
[0033] Rotate the threaded rod 5 to move the two extrusion blocks 15 away from each other, and then make the two extrusion blocks 15 slide on the two fixed limiting rods 16, so that the two extrusion blocks 15 no longer squeeze the two rotating wheels 13, and make the two rotating wheels 13 slide along the inclined surfaces of the two extrusion blocks 15, so that the movable inner plate 11 slides on the guide rod 17 through the tension of the tension spring 18, and then the cone thorn rod 9 is retracted into the interior of the socket 10.
[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A multi-layer aluminum ladder with a stable structure, comprising two supporting columns (1), characterized in that: A plurality of support cross bars (2) are fixedly installed between the two support columns (1), an inner support column (8) is fixedly installed inside the support column (1), bolts (6) are threadedly connected to both sides of the two support columns (1), connecting plates (3) are rotatably connected to the two bolts (6), handles (7) are fixedly installed on the two bolts (6), a hollow box (4) is fixedly installed on the two connecting plates (3), a movable inner plate (11) is slidably connected to the inside of the hollow box (4), a cone thorn rod (9) is fixedly installed on one side of the movable inner plate (11), a plug hole (10) is opened on one side of the hollow box (4), and the cone thorn rod (9) is slidably connected inside the plug hole (10).
2. A multi-layer aluminum ladder with a stable structure according to claim 1, characterized in that: Two fixing blocks (12) are fixedly mounted on one side of the movable inner plate (11).
3. A multi-layer aluminum ladder with a stable structure according to claim 2, characterized in that: The insides of the two fixed blocks (12) are both rotatably connected with rotating wheels (13), the inside of the hollow box (4) is fixedly installed with a guide rod (17), and the surface of the guide rod (17) is slidably connected with the inside of the movable inner plate (11).
4. A multi-layer aluminum ladder with a stable structure according to claim 3, characterized in that: A tension spring (18) is movably sleeved on the surface of the guide rod (17); one end of the tension spring (18) close to the movable inner plate (11) is fixedly connected to the movable inner plate (11); and one end of the tension spring (18) away from the movable inner plate (11) is fixedly connected to the inner wall of the hollow box (4).
5. A multi-layer aluminum ladder with a stable structure according to claim 4, characterized in that: The interior of the hollow box (4) is rotatably connected to a threaded rod (5), and the threads on the surface of the threaded rod (5) are arranged in opposite directions.
6. A multi-layer aluminum ladder with a stable structure according to claim 5, characterized in that: The opposite threads on the surface of the threaded rod (5) are respectively threadedly connected with extrusion blocks (15), and the two rotating wheels (13) are respectively in contact with the surfaces of the two extrusion blocks (15), and the opposite sides of the two extrusion blocks (15) are inclined.
7. A multi-layer aluminum ladder with a stable structure according to claim 6, characterized in that: A baffle (14) is fixedly mounted on one side of the two extrusion blocks (15) close to the movable inner plate (11).
8. A multi-layer aluminum ladder with a stable structure according to claim 7, characterized in that: Two fixed limiting rods (16) are fixedly installed inside the hollow box (4), and the two fixed limiting rods (16) are both slidably connected to the inside of the two extrusion blocks (15).