Portable folding ladder

Abstract

The utility model relates to the technical field of folding ladders, in particular to a portable folding ladder which comprises a ladder body, one end of the ladder body is provided with a hook, and the other end of the ladder body is provided with an anti-skidding foot sleeve. The ladder body comprises a plurality of section ladders, the section ladders are connected through rotary connecting pieces, and the section ladders and the hooks are connected through rotary connecting pieces; the section ladder comprises a foot rest lever and side levers connected to the two ends of the foot rest lever. The folding ladder has the capability of being quickly folded and unfolded while being light and portable, and the bearing capability and the safety are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of folding ladder, especially to a portable folding ladder. BACKGROUND

[0002] The ladder is an essential equipment in modern fire rescue scene and life at home. The traditional ladder is usually large in size, inconvenient to carry, especially in the case of rapid movement or long time carrying, the weight and volume of the traditional ladder become the factors limiting its wide application. In addition, the structure of the traditional ladder is single, which cannot meet the diversified use demand.

[0003] In order to improve the problems existing in the traditional ladder, a variety of solutions have been developed in the industry. One of the common telescopic ladders realizes storage and unfolding by adjusting the length of each section, but the bearing capacity is poor, which cannot meet the high strength use demand, leading to increased safety hazards; another one is to adopt folding structure, which divides the ladder into several parts, thereby reducing the overall space occupied, but the folding mechanism of part of the folding ladder is complex, inconvenient to operate, and cannot be quickly unfolded in emergency, especially in emergency situation, which may miss the best opportunity. Therefore, a new type of portable folding ladder is needed, which can ensure lightness and portability while having the ability of quick folding and unfolding, and enhance the bearing capacity and safety. SUMMARY

[0004] In order to improve the portability and stability of the folding ladder, the application provides a portable folding ladder.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme:

[0006] A portable folding ladder, comprising a ladder body, one end of the ladder body is provided with a hook, and the other end is provided with an anti-skid foot sleeve; the ladder body comprises a plurality of section ladders, each section ladder and the hook are connected by a rotating connecting piece; the section ladder comprises a foot pedal rod and a side rod connected to both ends of the foot pedal rod.

[0007] By adopting the above device, the ladder body is composed of a plurality of section ladders, and is connected by a rotating connecting piece, so that the ladder can be quickly unfolded or folded in emergency. Compared with the complex folding mechanism of the traditional folding ladder, the folding ladder of the application improves the convenience and speed of operation, and meets the demand of quick response. The volume after folding is greatly reduced, which is convenient for carrying and storing, especially suitable for quick movement and long time carrying in fire rescue scene or family environment. In addition, the hook is arranged at one end of the ladder, and the anti-skid foot sleeve is arranged at the other end, so that the ladder can be flexibly fixed at different positions (such as wall, railing, etc.) when in use, further improving its applicability and stability.

[0008] Preferably, the rotating connecting piece comprises a main connecting plate and a secondary connecting plate, the main connecting plate and the secondary connecting plate are fixedly connected to the two ends of the side rod respectively, and the hook is fixedly connected to the secondary connecting plate near the side of the section ladder.

[0009] By adopting the above device, the main connecting plate and the secondary connecting plate are fixedly connected to the two ends of the side rod respectively, so that the ladder is more stable during folding and unfolding, and the safety hidden danger caused by loose or unstable connecting piece is avoided. At the same time, it is convenient for the user to complete the unfolding or storage of the ladder in a short time, and it is suitable for quick use in emergency.

[0010] Preferably, the main connecting plate is formed with a main rotating part and a positioning protrusion, and the secondary connecting plate is formed with a secondary rotating part matched with the main rotating part and a positioning groove matched with the positioning protrusion.

[0011] Preferably, the main rotating part and the secondary rotating part are connected through a pin shaft.

[0012] By adopting the above device, the main rotating part and the secondary rotating part are connected through a pin shaft, so that the rotation between the section ladders is more flexible, and the folding and unfolding operations are quickly realized, thereby improving the convenience of using the folding ladder. Moreover, the pin shaft connection mode is simple and reliable, which reduces the manufacturing cost on the basis of ensuring stability and improves the practicality of the product. At the same time, the rotation angle and position of the ladder are limited by the cooperation of the positioning protrusion and the positioning groove, so that the ladder remains stable during use, and the safety hidden danger caused by excessive rotation or looseness is avoided.

[0013] Preferably, a through hole is formed in the positioning protrusion, a positioning pin is arranged in the through hole, and a matching hole is formed in the positioning groove. When the section ladder is unfolded, the positioning pin passes through the through hole and the matching hole to fix the main connecting plate and the secondary connecting plate.

[0014] By adopting the above device, when the section ladder is unfolded, the positioning pin passes through the through hole in the positioning protrusion and combines with the matching hole in the positioning groove, so that the fixing between the main connecting plate and the secondary connecting plate is effectively realized, the stability of the folding ladder in the use state is ensured, and the accidental folding caused by external force is prevented, thereby improving the load capacity and safety.

[0015] Preferably, an anti-falling ring is formed at one end of the positioning pin close to the through hole, a limiting column is arranged on the outer surface of the side rod, and the anti-falling ring is sleeved on the limiting column.

[0016] By adopting the above device, due to the limiting effect of the through hole, the positioning pin will not fall off the limiting column, and due to the limiting effect of the limiting column, the positioning pin will not fall off the through hole. Through the double limiting effect of the through hole and the limiting column, the stability of the positioning pin is effectively enhanced.

[0017] Preferably, the ladder body is provided with a hanging plate on the ladder section away from the hook end, and the hook is hung on the hanging plate when the two ladder bodies are overlapped front and back.

[0018] By using the above device, by setting multiple hanging plates on the ladder body away from the hook end, the two ladder bodies can be overlapped front and back through the cooperation of the hook and the hanging plate, which not only increases the functional diversity of the ladder, but also extends the overall length of the ladder in a specific scenario to meet the climbing demand of higher height.

[0019] Preferably, the outer surface of the foot pedal rod is covered with an anti-skid member, and the anti-skid member is provided with anti-skid lines.

[0020] By using the above device, the outer surface of the foot pedal rod is covered with an anti-skid member, and the anti-skid lines are provided on the anti-skid member, which can significantly improve the stability when the user steps on, and effectively reduce the safety accidents caused by slipping under the feet.

[0021] The present application has the following beneficial effects:

[0022] 1. In the present application, the ladder body is composed of multiple ladder sections, and is connected through a rotating connecting piece, so that the ladder can be quickly unfolded or folded in an emergency. Compared with the complex folding mechanism of the traditional folding ladder, the folding ladder of the present application improves the convenience and speed of operation, and meets the demand of rapid response. The volume after folding is greatly reduced, which is convenient for carrying and storing, and is especially suitable for rapid movement and long-time carrying in fire rescue sites or home environment. In addition, the hook is arranged at one end of the ladder, and the anti-skid foot sleeve is arranged at the other end, so that the ladder can be flexibly fixed at different positions (such as walls, railings, etc.) when in use, further improving the applicability and stability.

[0023] 2. In the present application, the main rotating part and the auxiliary rotating part are connected through a pin shaft, so that the rotation between the ladder sections is more flexible, and the folding and unfolding operations can be quickly realized, thereby improving the convenience of using the folding ladder. Moreover, the pin shaft connection mode is simple and reliable in structure, which reduces the manufacturing cost on the basis of ensuring stability, and improves the practicality of the product. At the same time, the rotation angle and position of the ladder are limited through the cooperation of the positioning convex block and the positioning concave groove, so that the ladder can remain stable during use, and the safety hidden danger caused by excessive rotation or loosening is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the unfolded state of the portable folding ladder of the embodiment of the present application;

[0025] Figure 2 is Figure 1 an enlarged view of part A in the figure;

[0026] Figure 3is a schematic view of the portable folding ladder of the utility model embodiment after being partially folded;

[0027] Figure 4 is Figure 3 the enlarged view of part B.

[0028] Mark explanation:

[0029] 1, ladder body; 11, section ladder; 111, side rod; 112, foot rod; 113, limiting column; 12, hanging plate; 13, anti-skid piece; 2, hook; 3, anti-skid foot cover; 4, rotary connecting piece; 41, main connecting plate; 411, main rotating part; 412, positioning protrusion; 412a, through hole; 42, auxiliary connecting plate; 421, auxiliary rotating part; 422, positioning groove; 422a, matching hole; 43, pin shaft; 44, positioning pin; 441, anti-dropping ring. Specific implementation

[0030] The following will be combined with the attached Figures 1-4 The application is further described in detail.

[0031] A portable folding ladder, as Figure 1 indicated, comprises a ladder body 1. Among them, the ladder body 1 is composed of multiple section ladders 11, in this embodiment, the section ladders 11 are provided with four, which are first section ladder, second section ladder, third section ladder and fourth section ladder, and the adjacent two section ladders 11 are connected with each other through the rotary connecting piece 4 to realize the rotary folding between the section ladders 11. In addition, the first section ladder upper end is connected with the hook 2 through the rotary connecting piece 4, and the bottom of the fourth section ladder is fixed with the anti-skid foot cover 3 to avoid the folding ladder from sliding when using, enhance the stability and safety of the ladder. In this application, the ladder body 1 and the hook 2 are made of high-strength aluminum alloy material.

[0032] Specifically, as Figure 1 indicated, each section ladder 11 comprises two parallel foot rods 112 and side rods 111 connected to both ends of the foot rods 112. In order to increase the stability of the user when stepping, the foot rod 112 is covered with an anti-skid piece 13, and the anti-skid piece 13 is firmly bonded with the foot rod 112, and in order to further improve the anti-skid performance, the anti-skid piece 13 is formed with anti-skid lines on the stepping surface, effectively reducing the possibility of falling when climbing the ladder, thereby ensuring personal safety. In this application, the anti-skid piece 13 is made of rubber material.

[0033] As Figure 1As shown, the fourth ladder section side rod 111 is provided with a plurality of hanging plates 12, in this embodiment, the hanging plates 12 are provided with four, the four hanging plates 12 are two groups, and are arranged in axial symmetry with the length direction of the side rod 111 as the axis. Through the cooperation of the hooks 2 and the hanging plates 12, the front and rear overlap between the adjacent two ladder bodies 1 is realized, which can be used for vertical climbing of multi-storey buildings to complete the extension climbing height function after the combination of the plurality of ladder bodies 1.

[0034] As shown in the figure, Figures 1-2 The rotating connecting piece 4 includes a main connecting plate 41 and a secondary connecting plate 42. The main connecting plate 41 and the secondary connecting plate 42 are respectively fixedly connected to the two ends of the side rod 111 by bolts, so as to improve the stability of the ladder during folding and unfolding. Moreover, the hook 2 is rotatably connected to the main connecting plate 41 at the top of the first ladder section through the secondary connecting plate 42 close to one end of the first ladder section, so that the folding between the hook 2 and the first ladder section can be realized.

[0035] Further, as shown in the figure, Figures 3-4 In order to make the rotation between the ladder sections 11 more flexible, the main connecting plate 41 is formed with a main rotating part 411, and the secondary connecting plate 42 is formed with a secondary rotating part 421. The main rotating part 411 is provided with a cavity for accommodating the secondary rotating part 421. When connected, the secondary rotating part 421 is clamped in the cavity of the main rotating part 411 and is fixed by the pin shaft 43, so that the rotation between the ladder sections 11 is more flexible, the folding and unfolding operation of the ladder is quickly realized, and the convenience of using the folding ladder is improved.

[0036] As shown in the figure, Figure 4 In order to enhance the stability of the folding ladder in the use state and avoid accidental folding of the folding ladder during use, the main connecting plate 41 is further formed with a positioning protrusion 412, and the secondary connecting plate 42 is formed with a positioning groove 422 matched with the positioning protrusion 412. When the folding ladder is unfolded, the positioning protrusion 412 is embedded in the positioning groove 422. Moreover, the positioning protrusion 412 and the positioning groove 422 are connected and fixed by the positioning pin 44. The positioning protrusion 412 is provided with a through hole 412a, and the positioning groove 422 is provided with a matched hole 422a. When the folding ladder is in the unfolded state, the positioning protrusion 412 on the main connecting plate 41 and the positioning groove 422 on the secondary connecting plate 42 are mutually buckled, the positioning pin 44 passes through the through hole 412a and is inserted into the matched hole 422a to fix the main connecting plate 41 and the secondary connecting plate 42, so as to ensure the stability of the folding ladder in the use state, prevent accidental folding caused by external force, and thus improve the load capacity and safety.

[0037] As shown in the figure, Figures 3-4As shown, the positioning pin 44 is formed with an anti-falling ring 441 near one end of the through hole 412a, and the outer surface of the side rod 111 is provided with a limiting column 113, the anti-falling ring 441 is sleeved on the limiting column 113, due to the limiting effect of the through hole 412a on the positioning pin 44, the positioning pin 44 will not fall off from the limiting column 113. At the same time, due to the limiting effect of the limiting column 113 on the positioning pin 44, the positioning pin 44 will not fall off from the through hole 412a. Through the double limiting effect of the through hole 412a and the limiting column 113 on the positioning pin 44, the stability of the positioning pin 44 is effectively enhanced, the loosening or falling of the positioning pin 44 caused by external vibration or impact is reduced, and the stable connection between the section ladders 11 is ensured.

[0038] As shown in the drawings, Figure 1 In order to effectively extend the overall length of the folding ladder, a plurality of hanging plates 12 are arranged on the fourth section ladder, and the hooks 2 of another folding ladder are hung on the hanging plates 12, so that the front and rear overlap of the two ladder bodies 1 can be realized, which is used for vertical climbing of multi-storey buildings, not only increases the functional diversity of the ladder, but also extends the climbing height.

[0039] Working principle: through the mutual connection between the plurality of section ladders 11, the flexible rotation between each section ladder 11 is realized by the cooperation of the main connecting plate 41 and the auxiliary connecting plate 42, and the positioning pin 44 and other locking mechanisms are introduced to ensure the stability in the unfolded state, which solves the problem that the traditional ladder is heavy and not easy to carry, and also greatly improves the carrying capacity and safety of the folding ladder.

[0040] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A portable folding ladder characterized in that, The utility model provides a ladder body (1), one end of the ladder body (1) is provided with a hook (2), the other end is provided with an antiskid foot sleeve (3), the ladder body (1) includes a plurality of section ladders (11), each section ladder (11) is connected through the rotation connecting piece (4) between section ladder (11) and hook (2), the section ladder (11) includes a footstep lever (112) and the side rod (111) connected to the footstep lever (112) both ends, The rotation connecting piece (4) includes main connecting plate (41) and vice connecting plate (42), the main connecting plate (41) and vice connecting plate (42) are fixedly connected to the both ends of side rod (111) respectively, the hook (2) is fixedly connected with vice connecting plate (42) on the side of section ladder (11), The main connecting plate (41) is formed with main rotating part (411) and positioning boss (412), the vice connecting plate (42) is formed with vice rotating part (421) matched with main rotating part (411) and positioning recess (422) matched with positioning boss (412), The main rotating part (411) and vice rotating part (421) are connected through pin shaft (43).

2. A portable folding ladder according to claim 1, wherein The positioning boss (412) is provided with through hole (412a), the positioning pin (44) is arranged in the through hole (412a), the positioning recess (422) is provided with matched hole (422a), when the section ladder (11) is unfolded, the positioning pin (44) passes through the through hole (412a) and matched hole (422a) and fixes the main connecting plate (41) and vice connecting plate (42).

3. A portable folding ladder according to claim 2, wherein, The end of positioning pin (44) close to through hole (412a) is formed with anti -drop ring (441), the outer surface of side rod (111) is provided with limiting post (113), the anti -drop ring (441) is sleeved on limiting post (113).

4. The portable, foldable ladder of claim 1, wherein, The section ladder (11) on the end of the ladder body (1) away from hook (2) is provided with hanging plate (12), when two the ladder body (1) is overlapped, the hook (2) is hung on hanging plate (12).

5. The portable, foldable ladder of claim 1, wherein, The outer surface of footstep lever (112) is covered with anti -slip piece (13), the anti -slip piece (13) is provided with anti -slip line.

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