Folding climbing ladder

Abstract

The utility model discloses a folding climbing ladder, and belongs to the technical field of logistics support. According to the scheme, the device comprises a first supporting part and a second supporting part which are the same in structure, the first supporting part is connected with the second supporting part through a hinge assembly, fixing pieces are arranged on the outer sides of the two vertical beams where the hinge assembly is located respectively, and a limiting assembly is connected to an upper fixing base and used for controlling drawing-in and drawing-out of a plug pin. The climbing ladder solves the technical problem that an existing climbing ladder is prone to loosening or not rotating in place in the using process, so that stability is poor.

Description

Technical Field

[0001] This utility model belongs to the field of logistics support technology, specifically relating to a folding ladder. Background Technology

[0002] Ladders are essential for quickly retrieving parts. In the inspection and maintenance of power facilities, ladders provide a platform for workers to climb and operate, ensuring the normal operation of the power facilities.

[0003] Ladders are indispensable tools in building interior decoration and exterior construction, supporting high-altitude operations such as ceiling installation and exterior wall cleaning. In the event of a fire or other emergency, firefighters can use ladders for high-altitude rescue and firefighting operations, ensuring the safety of people's lives and property.

[0004] However, traditional ladder designs often face several key problems, particularly in terms of handling difficulties during material retrieval. First, traditional ladders are often bulky and heavy. When frequent movement is required to reach different maintenance points, their weight and size become major obstacles, not only consuming significant physical strength for maintenance personnel but also potentially delaying maintenance progress. Second, existing ladder designs typically lack sufficient flexibility and adaptability, making it difficult to place stably in different terrains and environments. This instability can pose safety risks to maintenance personnel, further increasing the difficulty of material retrieval. Furthermore, traditional ladders often occupy considerable space when folded, potentially leading to unsuitable storage for other important equipment or materials. Therefore, to address the problems of difficult handling, lack of flexibility and adaptability, and large space occupation in material retrieval, existing ladder technologies propose a folding ladder.

[0005] Chinese patent CN206647036U discloses a telescopic ladder. Although the device has a folding function, it achieves the folding function of the ladder through a semi-automatic 180-degree rotator. When the user unfolds and folds the ladder, this setting may be unstable, prone to mechanical failure, or cause safety hazards due to improper operation. In particular, during the unfolding process, the ladder may not rotate properly or may suddenly loosen, which increases the safety risk for the user. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a folding ladder that solves the technical problem of poor stability caused by the easy loosening or improper rotation of existing ladders during use.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model provides a folding ladder, including a first support part and a second support part with the same structure. The first support part is connected to the second support part through a hinge assembly, which is used to realize the unfolding and retraction of the first support part and the second support part. A fixing member is provided at the position where the first support part and the second support part are connected. The fixing member has a through hole for inserting a pin. A crossbar is connected to the pin, and the pin and the crossbar are interference-fitted.

[0009] Further preferably, the connection structure of the first support part and the second support part is completely symmetrical. The first support part is composed of two vertical beams and several horizontal beams. Several horizontal beams are vertically connected between the two parallel vertical beams, and the several horizontal beams are parallel to each other and spaced apart. The second support part is composed of two vertical beams and several horizontal beams. Several horizontal beams are vertically connected between the two parallel vertical beams, and the several horizontal beams are parallel to each other and spaced apart.

[0010] Both support sections are constructed using two vertical beams and several horizontal beams, which enhance the stability and load-bearing capacity of the ladder.

[0011] Preferably, the fixing member includes an upper fixing seat and a lower fixing seat, the upper fixing seat being connected to the first support part, and the lower fixing seat being connected to the second support part;

[0012] The upper fixing seat includes a base plate and two side plates. The base plate is connected to the first support part, and the two sides of the base plate are perpendicularly connected to the side plates respectively. The two side plates are respectively provided with a first through hole, and the lower fixing seat is provided with a second through hole. Pins are inserted into the first through hole and the second through hole, and the first through hole and the second through hole are on the same axis.

[0013] Preferably, the lower fixing base includes a first square plate and a second square plate, the first square plate is connected to the second support part, and the second square plate is perpendicularly connected to the first square plate.

[0014] Preferably, the upper fixed seat is provided with a limiting component, which includes a spring and two limiting pins. The spring is installed between the two side plates, and the limiting pins are vertically arranged on the base plate.

[0015] More preferably, the length of the crossbar is longer than the distance between the two limiting pins.

[0016] Preferably, the middle section of the limiting pin has a groove for guiding the crossbar.

[0017] More preferably, the groove is circumferential.

[0018] Preferably, the pin has an L-shaped structure.

[0019] Preferably, the hinge assembly includes an upper hinge, a lower hinge, and a pin. The upper hinge is connected to a first support portion, the lower hinge is connected to a second support portion, and the upper and lower hinges are connected by a pin.

[0020] Preferably, an expansion joint is connected to the vertical beam at the bottom of the second support part. The expansion joint includes two columns and several horizontal columns. Several third through holes are opened on the outer side of the two columns. The third through holes are used to install telescopic fixing pins. Several fourth through holes are opened on the outer side of the vertical beam at the bottom of the second support part. The intervals of the several third through holes and the several fourth through holes are consistent.

[0021] The expansion joint is used to adjust the height of the second support.

[0022] Preferably, the column has a hollow structure.

[0023] Preferably, the first support portion and the second support portion are covered with a skin, which is made of carbon fiber material; the core material inside the skin is polyurethane foam, and the skin and core material are integrated using a vacuum infusion process.

[0024] By using carbon fiber skin and polyurethane foam core material to cover the first and second support parts, the ladder has better strength and toughness while reducing its weight. This design improves the ladder's durability and portability. This utility model designs a lightweight, high-strength, and environmentally adaptable folding ladder that can maintain its weight even when lightweight, thus increasing the load-bearing capacity of the folding ladder.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] This utility model provides a folding ladder, including a first support part and a second support part with identical structures. By setting a hinge assembly between the two support parts, the first support part and the lower support are driven to unfold and fold, realizing the unfolding and retraction of the folding ladder. This makes the ladder structure compact, easy to carry and store. At the same time, by setting a fixing member at the connection position of the first support part and the second support part, the first support part and the second support part can be more firmly connected together when the folding ladder is unfolded, which enhances the stability of the ladder. This design not only enhances the stability of the ladder in the unfolded state, but also ensures safety during use, thereby preventing technical problems such as loosening or incomplete rotation of the ladder during use.

[0027] Furthermore, by designing the fastener into an upper fixing seat and a lower fixing seat, which are connected to the first support and the second support respectively, this design simplifies the installation process, making it easier to install the fastener into the corresponding position on the ladder, and enabling the fastener to be stably connected to the first support and the second support, thereby making the ladder more stable when unfolded.

[0028] Furthermore, the combination of the pin and the through hole enables quick connection and disassembly, facilitating the folding and carrying of the ladder. A first through hole is provided on the side plate of the upper fixing base, which, together with a second through hole on the lower fixing base, forms the insertion channel for the pin. This design allows the pin to be smoothly inserted and removed, improving ease of use.

[0029] Furthermore, by vertically connecting the first square plate and the second square plate to form a lower fixing base, the stability of the pin insertion is enhanced when the ladder is unfolded.

[0030] Furthermore, the limiting assembly is equipped with a spring and two limiting pins. The spring force can keep the pin stably inserted into the through holes of the upper and lower fixed seats when needed, while the limiting pins not only lock the crossbar when the pin is pulled out, but also prevent the pin from accidentally sliding out when not needed, thus making the insertion and removal of the pin more convenient and safe.

[0031] Furthermore, the groove design in the middle section of the limiting pin not only makes the engagement of the crossbar more stable, but also makes the insertion and removal of the pin smoother, reducing friction and resistance, and also improving the service life of the pin.

[0032] Furthermore, the L-shaped design of the latch not only makes it easier to control the insertion and removal of the latch, but also provides a better fixing effect when the latch is inserted into the through holes of the upper and lower fixing seats, thereby preventing the ladder from shaking or tilting during use.

[0033] Furthermore, the hinge assembly design allows the first and second support sections to be easily unfolded and retracted, while also ensuring the stability and load-bearing capacity of the ladder when unfolded.

[0034] Furthermore, the design of the telescopic joint allows the height of the second support section to be adjusted as needed, thus meeting the operational requirements at different heights. This design improves the ladder's flexibility and practicality. The telescopic fixing pin and the design of the third and fourth through holes allow for more precise height adjustment of the telescopic joint and ensure stability after adjustment. This design improves the ladder's accuracy and safety.

[0035] Furthermore, the hollow structure design of the uprights facilitates the insertion of the second support beam and reduces the weight of the ladder, making it lighter and easier to carry. At the same time, the hollow structure also provides better heat and sound insulation, improving the comfort of using the ladder. Attached Figure Description

[0036] Figure 1 This is a diagram showing the unfolded state of the ladder of this utility model;

[0037] Figure 2 This is a diagram showing the recovery state of the ladder of this utility model;

[0038] Figure 3 This is a partial view of the fixing base of the ladder in its unfolded state.

[0039] Figure 4 This is a partial view of the fixed base of the ladder in its retracted state according to this utility model;

[0040] Figure 5 This is a partial view of the hinge component of the ladder in its retracted state according to this utility model;

[0041] Figure 6 This is a partial view of the limiting component of the ladder in its unfolded state according to this utility model;

[0042] Figure 7 This is a partial view of the lower fixing seat for pulling out the locking pin of the ladder according to this utility model;

[0043] Figure 8 This is a partial view of the lower fixing seat for pulling out the locking pin of the ladder according to this utility model;

[0044] Figure 9 This is a partial view of the telescopic joint of the ladder of this utility model;

[0045] Wherein: 1-First support part; 2-Pin; 3-Fixing component; 31-Upper fixing seat; 311-Base plate; 312-Side plate; 32-Lower fixing seat; 4-Hinge assembly; 41-Upper hinge; 42-Lower hinge; 43-Pin shaft; 5-Second support part; 6-Expansion joint; 7-Expansion fixing pin; 8-Spring; 9-Limiting pin; 10-Horizontal bar; 11-Vertical beam; 12-Horizontal beam; 13-First square plate; 14-Second square plate; 15-Column; 16-Horizontal column. Detailed Implementation

[0046] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0047] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0048] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0049] Example 1

[0050] The folding ladder of this utility model has two states: a retracted state for storage and an unfolded state for use.

[0051] like Figure 1 As shown, this utility model provides a folding ladder, comprising: a first support part 1 and a second support part 5 with identical structures. The first support part 1 consists of two vertical beams 11 and several horizontal beams 12, with several horizontal beams 12 vertically connected between the two parallel vertical beams 11, and the several horizontal beams 12 are parallel to each other and spaced apart. The second support part 5 consists of two vertical beams 11 and several horizontal beams 12, with several horizontal beams 12 vertically connected between the two parallel vertical beams 11, and the several horizontal beams 12 are parallel to each other and spaced apart. The first support part 1 and the second support part 5 are mainly used for supporting personnel. When using the ladder, the user can unfold the ladder, hold the vertical beams 11 by hand, and step on the horizontal beams 12 to retrieve items.

[0052] like Figure 3As shown, the first support part 1 is connected to the second support part 5 through a hinge assembly 4. The hinge assembly 4 is used to realize the unfolding and retraction of the first support part 1 and the second support part 5. Fixing members 3 are respectively provided on the outside of the two vertical beams 11 where the hinge assembly 4 is located. The fixing member 3 includes an upper fixing seat 31 and a lower fixing seat 32. The upper fixing seat 31 is connected to the first support part 1, and the lower fixing seat 32 is connected to the second support part 5.

[0053] The upper fixing seat 31 includes a base plate 311 and two side plates 312. The base plate 311 is connected to the first support part 1, and the two sides of the base plate 311 are perpendicularly connected to the side plates 312 respectively. The two side plates 311 are respectively provided with a first through hole, and the lower fixing seat 32 is provided with a second through hole. The first through hole and the second through hole are used to insert the pin 2, and the first through hole and the second through hole are on the same axis. The pin 2 is provided with a crossbar 10, and the pin 2 and the crossbar 10 are interference fit. A limiting component is connected to the upper fixing seat 31 to control the insertion and withdrawal of the pin 2.

[0054] More preferably, the first support portion 1 and the second support portion 5 can be folded 180° by means of the hinge assembly 4.

[0055] like Figure 3 As shown, after inserting the pin 2 into the through hole in the upper fixing seat 31 and the lower fixing seat 32 and fixing it, the ladder is in the unfolded state.

[0056] like Figure 2 and Figure 4 As shown, after the pin 2 is pulled out of the lower fixed seat 32, the upper hinge 41 and the lower hinge 42 close with the rotation of the pin 43, and the ladder is in the retracted state.

[0057] Preferably, the limiting assembly includes a spring 8 and two limiting pins 9. The spring 8 is installed between the two side plates 312, and the limiting pins 9 are vertically arranged on the base plate 311. The length of the crossbar 10 is longer than the distance between the two limiting pins 9. At least two limiting pins 9 are provided.

[0058] Preferred, such as Figure 6 As shown, the middle section of the limiting pin 9 has a groove for guiding the crossbar 10.

[0059] Preferably, the pin 2 has an L-shaped structure.

[0060] Preferred, such as Figure 5 As shown, the hinge assembly 4 includes an upper hinge 41, a lower hinge 42, and a pin 43. The upper hinge 41 is connected to the first support part 1, and the lower hinge 42 is connected to the second support part 5. The upper hinge 41 and the lower hinge 42 are connected by the pin 43.

[0061] Preferably, the lower fixing seat 32 includes a first square plate 13 and a second square plate 14, the first square plate 13 is connected to the second support part 5, and the second square plate 14 is perpendicularly connected to the first square plate 13.

[0062] Preferably, an expansion joint 6 is connected to the vertical beam 11 at the bottom of the second support part 5 to adjust the height of the second support part 5.

[0063] Preferred, such as Figure 9 As shown, the telescopic joint 6 includes two uprights 15 and several horizontal columns 16. Several third through holes are opened on the outer side of the two uprights 15, and the third through holes are used to install telescopic fixing pins 7. Several fourth through holes are opened on the outer side of the vertical beam 11 at the bottom of the second support part 5. The spacing of the several third through holes and the several fourth through holes is consistent.

[0064] Preferably, the column 15 has a hollow structure.

[0065] Preferably, the first support part 1 and the second support part 5 adopt 3D foam sewing technology, the skin is made of high-quality carbon fiber material, the core material is lightweight polyurethane foam, and the whole adopts vacuum induction process.

[0066] How to use:

[0067] like Figure 7 and Figure 8 As shown, when the ladder needs to be folded, the pin 2 and the crossbar 10 are rotated 90 degrees clockwise. The pin 2 is then pulled upwards, compressing the spring 8. After the crossbar 10 exceeds the limit pin 9, the pin 2 and the crossbar 10 are rotated 90 degrees counterclockwise. The pressure of the spring 8 causes the crossbar 10 to be locked onto the limit pin 9, allowing the pin 2 to be pulled out of the lower fixing seat 32. Then, the first support part 1 and the second support part 5 are folded together to complete the folding of the ladder.

[0068] When the ladder needs to be unfolded, first support part 1 and second support part 5 are unfolded. Then, the pin 2, along with the crossbar 10, is rotated 90 degrees clockwise. The pin 2 is then pushed downwards, compressing the spring 8. After the crossbar 10 exceeds the limit pin 9, the pin 2, along with the crossbar 10, is rotated 90 degrees counterclockwise. The pressure of the spring 8 is used to insert the pin 2 into the first through hole on the side plate 311 and the second through hole on the lower fixing seat 32, thus completing the unfolding of the ladder. At the same time, the telescopic joint 6 can be installed on the vertical beam 11 at the bottom of the second support part 5 and adjusted to the required height. The telescopic fixing pin 7 is then inserted into the third through hole of the telescopic joint 6 to complete the fixing of the telescopic joint 6.

[0069] The first support part 1 and the second support part 5 are mainly used for personnel support. The hinge assembly 4 connects the first support part 1 and the second support part 5 together and can be folded 180°. After folding, the pin 2 and the fixing seat 3 can fix the first support part 1 and the second support part 5. The telescopic joint 6 can be extended and retracted according to the actual height requirements. After the telescopic joint 6 is extended and retracted to the correct position, it can be fixed by the telescopic fixing pin 7. When retracting, the telescopic joint 6 is retracted, the pin 2 is pulled out, and the first support part 1 and the second support part 5 are folded.

[0070] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A folding step ladder, characterized in that, The utility model provides a support structure, including the first support part (1) and the second support part (5) of same structure, the first support part (1) is connected with second support part (5) through the hinge assembly (4), the position of first support part (1) with second support part (5) is connected is provided with fixed part (3), the fixed part (3) is seted up with through -hole, for inserting the bolt (2), the bolt (2) is connected with crosspiece (10), and the bolt (2) is with crosspiece (10) interference fit.

2. A folding loft ladder according to claim 1, characterised in that, The fixed part (3) includes an upper fixing seat (31) and a lower fixing seat (32), the upper fixing seat (31) is connected with the first support part (1), and the lower fixing seat (32) is connected with the second support part (5).

3. A folding loft ladder according to claim 2, characterised in that, The upper fixing seat (31) includes a bottom plate (311) and two side plates (312), the bottom plate (311) is connected with the first support part (1), and the side plates (312) are vertically connected to the two sides of the bottom plate (311); first through holes are formed in the two side plates (312), respectively, and second through holes are formed in the lower fixing seat (32), and the bolt (2) is inserted into the first through holes and the second through holes; the first through holes and the second through holes are on the same axis.

4. The foldable loft ladder according to claim 2, wherein, The lower fixing seat (32) includes a first square plate (13) and a second square plate (14), the first square plate (13) is connected with the second support part (5), and the second square plate (14) is vertically connected with the first square plate (13).

5. The foldable loft ladder according to claim 3, wherein, A limiting assembly is arranged in the upper fixing seat (31), the limiting assembly includes a spring (8) and two limiting pins (9), the spring (8) is installed between the two side plates (312), and the limiting pins (9) are vertically arranged on the bottom plate (311).

6. A folding loft ladder according to claim 5, characterised in that, A groove is formed in the middle section of the limiting pin (9).

7. The foldable loft ladder according to claim 1, wherein, The bolt (2) is in an L-shaped structure.

8. The foldable loft ladder according to claim 1, wherein, The hinge assembly (4) includes an upper hinge (41), a lower hinge (42) and a pin shaft (43), the upper hinge (41) is connected with the first support part (1), the lower hinge (42) is connected with the second support part (5), and the upper hinge (41) and the lower hinge (42) are connected through the pin shaft (43).

9. The foldable loft ladder according to claim 1, wherein, The telescopic joint (6) is connected to the vertical beam (11) at the bottom end of the second support part (5), the telescopic joint (6) includes two vertical columns (15) and a plurality of horizontal columns (16), a plurality of third through holes are formed on the outer sides of the two vertical columns (15), the third through holes are used for installing telescopic fixed bolts (7), a plurality of fourth through holes are formed on the outer side of the vertical beam (11) at the bottom of the second support part (5), and the plurality of third through holes and the plurality of fourth through holes are uniformly distributed.

10. A folding loft ladder according to claim 9, characterised in that, The vertical column (15) is in a hollow structure.

Images