Stable and safe book arranging ladder for library

Abstract

The utility model relates to a kind of stable and safe library book arrangement ladder, including ladder, the side of ladder is provided with multiple insertion slots, one of insertion slots is inserted with insertion block, the side of insertion block away from ladder is fixed with mounting plate, the side of mounting plate away from insertion block is rotatably connected with article plate, the both sides of ladder are provided with sliding slot, gripping rod is arranged in sliding slot, multiple limiting structures are assembled in sliding slot, limiting structure is used to limit gripping rod movement, support structure is installed on mounting plate, support structure is used to support article plate, clamping structure is installed between insertion block and insertion slot. The utility model can be conveniently used by user to hold, so that user when climbing on the ladder, ensure its body balance, and make the ladder more stable and safe, and can realize the convenient access of book when high operation, simultaneously optimize structural stability and operating convenience.

Description

Technical Field

[0001] This utility model belongs to the field of book organizing ladder technology, specifically relating to a stable and safe book organizing ladder for libraries. Background Technology

[0002] In the daily work of libraries, archives, and other similar institutions, book-access ladders are essential equipment to assist staff in retrieving books located at higher levels. Existing mobile book-access ladders typically focus on basic climbing functionality and ease of movement; however, in actual high-altitude work scenarios, their structural design reveals several inherent flaws, primarily in the following aspects: 1. Traditional storage ladders typically feature wide, plate-like treads designed primarily for weight-bearing, lacking adjustable gripping mechanisms. When working at heights, workers often need to hold onto shelves or walls with one or both hands to maintain balance. This not only limits work efficiency but also increases the risk of slipping due to loss of balance. Existing ladders do not provide stable and reliable gripping points at different heights.

[0003] 2. The existing organizing ladders do not integrate a reliable temporary storage platform. This forces staff to frequently climb up and down the ladder to temporarily place books on the ground or on additional carts when retrieving or organizing them. This lack of structural design makes the operation cumbersome and inefficient, and there is a risk of books slipping or being damaged during transfer or temporary placement.

[0004] 3. Some ladders may attempt to add functional components such as shelves, but their connections are mostly rigid, such as bolt fixing. Adjusting the height of the shelves or disassembling them is complicated and often requires tools, making quick and flexible adjustments difficult to adapt to the varied work environments and the needs of staff of different heights within a library.

[0005] 4. Insufficient stability and convenience of support and locking structures: For movable functional components (such as shelves), the support structure after unfolding is often simple and unreliable, posing a risk of accidental folding; at the same time, the connection and locking structure between the functional components and the main body of the ladder (such as simple pins) may be prone to loosening or falling off, affecting the overall stability and safety of the equipment.

[0006] In conclusion, there is an urgent need in this field for a book organizing ladder that is structurally optimized and innovative, in order to address its inherent shortcomings in terms of grip safety, book access efficiency, component connection flexibility, and overall structural stability. Utility Model Content

[0007] The purpose of this utility model is to provide a stable and safe book organizing ladder for libraries, which is easy for users to hold, thus ensuring their body balance when climbing the ladder, making the ladder more stable and safe, and enabling convenient access to books when working at heights, while optimizing structural stability and ease of operation.

[0008] The specific technical solution adopted by this utility model is as follows: A stable and safe library book organizing ladder includes a ladder with multiple insertion slots on one side, an insertion block being inserted into one of the insertion slots, a mounting plate being fixed to the side of the insertion block away from the ladder, and a shelf being rotatably connected to the side of the mounting plate away from the insertion block. Both sides of the ladder are provided with sliding grooves, and a gripping rod is provided in the sliding groove. Multiple limiting structures are installed in the sliding groove to restrict the movement of the gripping rod. A support structure is installed on the mounting plate to support the shelf. A snap-fit ​​structure is installed between the insertion block and the insertion groove to restrict the insertion block.

[0009] The limiting structure includes mounting pieces fixed on both sides of the sliding groove. A limiting strip is rotatably connected inside the mounting piece. Both limiting strips face each other and are obliquely upward. A torsion spring is installed at the position where the limiting strip is rotatably connected to the mounting piece. A blocking strip is fixed at the bottom of the mounting piece and at the bottom of the limiting strip.

[0010] The support structure includes a rotating bar rotatably connected to the mounting plate on the side away from the insertion block. The rotating bar is disposed at the bottom of the shelf. An abutment bar is fixed to the end of the rotating bar away from the mounting plate. A fixing plate is fixed to the bottom of the shelf, and a groove is provided at the bottom of the fixing plate. The abutment bar abuts into the groove.

[0011] The snap-fit ​​structure includes an installation groove disposed inside the insertion block, a snap-fit ​​block slidably connected in the installation groove, a snap-fit ​​slot disposed inside the ladder at a position corresponding to the insertion groove, and the snap-fit ​​slot communicating with the insertion groove, the snap-fit ​​block being inserted into the snap-fit ​​slot, and a spring also being installed in the installation groove, the spring being connected to the snap-fit ​​block.

[0012] The card block has beveled surfaces on both sides near the card slot.

[0013] A first magnet is fixed to one end of the insertion block near the ladder, and a second magnet is disposed in the insertion slot at a position corresponding to the first magnet, and the first magnet and the second magnet attract each other.

[0014] A blocking bracket is provided at the top edge of the shelf.

[0015] The technical effects achieved by this utility model are as follows: The ladder features sliding grooves 17 on both sides, with grip bars 18 installed inside. Limiting bars are angled upwards and automatically reset via a torsion spring. The grip bars can move within the sliding grooves and are locked by the limiting bars. Users can push the grip bars along the sliding grooves with one hand. The limiting structure automatically locks when the grip bars reach the designated position (via the limiting and blocking bars), providing multiple adjustable grip points. This allows users to flexibly adjust the grip position according to the working height, enhancing body balance and reducing the risk of slipping.

[0016] The shelf 15 is connected to the insertion block 3 via the mounting plate 2 and can be rotated and folded. The support structure includes a rotating bar 8, an abutment bar 9, and a fixing plate 10. The bottom of the fixing plate has a groove, and the abutment bar can be inserted into the groove and fixed with magnetic attraction. The shelf can be flipped up and unfolded, and fixed by the support structure to form a temporary book storage platform. The blocking rack (13) prevents books from slipping. When in use, the shelf has a strong load-bearing capacity and the books do not slip when the ladder is tilted at a certain angle. This reduces the frequency of going up and down the ladder and improves the access efficiency.

[0017] 3. The insertion block 3 can be inserted into multiple insertion slots 14 on the side of the ladder. The block has beveled surfaces 16 on both sides for easy insertion and removal. The connection is enhanced by attraction through the first magnetic piece 11 and the second magnetic piece 12. The insertion block can be quickly inserted and removed, and the insertion slot position can be changed, allowing for flexible adjustment of the shelf height. The snap-fit ​​structure uses both spring force and magnetic attraction for double fixation, ensuring a stable connection. This improves the adaptability of the structure and ease of operation.

[0018] 4. The structural components, such as the grip bars, shelf, and insert blocks, work together to provide not only a safe grip but also temporary book storage and quick height adjustment. The structural design emphasizes modularity and rapid operation, allowing for tool-free adjustments and adapting to the diverse working environment of a library. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure between the insertion block, the blocking frame, and the rotating bar in this utility model; Figure 3 This is a schematic diagram of the structure between the rotating bar, the mounting plate, and the fixing plate in this utility model; Figure 4 This is a cross-sectional view of the ladder and the insertion block in this utility model; Figure 5 This is a structural schematic diagram of the sliding groove, gripping rod, and limiting strip in this utility model.

[0020] The attached diagram lists the components represented by each number as follows: 1. Ladder; 2. Mounting plate; 3. Insertion block; 4. Mounting slot; 5. Locking block; 6. Locking groove; 7. Spring; 8. Rotating bar; 9. Abutment bar; 10. Fixing plate; 11. First magnet piece; 12. Second magnet piece; 13. Blocking bracket; 14. Insertion slot; 15. Shelf; 16. Inclined surface; 17. Sliding groove; 18. Holding rod; 19. Limiting bar; 20. Mounting piece; 21. Torsion spring; 22. Blocking bar. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] Specific implementation method one, such as Figures 1-5 As shown, a stable and safe library book organizing ladder includes a ladder 1. Further, the floor and ceiling of the library can be provided with sliding grooves, allowing the ladder 1 to slide laterally in front of the bookshelves. After the lateral movement is complete, the ladder 1 is locked, thus changing its position. The sliding grooves ensure the stability and safety of the ladder 1. One side of the ladder 1 has multiple insertion slots 14, one of which contains an insertion block 3. A mounting plate 2 is fixed to the side of the insertion block 3 away from the ladder 1. A shelf 15 is rotatably connected to the side of the mounting plate 2 away from the insertion block 3. The shelf 15 allows for temporary placement of organized books. Furthermore, a blocking frame 13 is provided at the top edge of the shelf 15 to protect the edge of the shelf 15 and prevent books from falling. Both sides of the ladder 1 are provided with sliding grooves 17, and a gripping rod 18 is provided in the sliding groove 17. Multiple limiting structures are assembled in the sliding groove 17, and the limiting structures are used to restrict the movement of the gripping rod 18. See attached document Figure 5 The limiting structure includes mounting pieces 20 fixed on both sides of the sliding groove 17. A limiting strip 19 is rotatably connected inside the mounting piece 20. Both limiting strips 19 face each other and are obliquely upward. A torsion spring 21 is installed at the position where the limiting strip 19 is rotatably connected to the mounting piece 20. A blocking strip 22 is fixed at the bottom of the mounting piece 20 and at the bottom of the limiting strip 19. When a user climbs ladder 1, they can hold the grip bar 18 with both hands and climb upwards. To continue climbing, the user can move the grip bar 18 upwards until it contacts the lower part of the two limiting bars 19. Further upward movement is achieved through the rotational connection between the limiting bars 19 and the mounting plate 20, causing the limiting bars 19 to swing upwards until the grip bar 18 reaches the top of the limiting bars 19. At this point, the two limiting bars 19 reset via the torsion spring 21, and the blocking bar 22 prevents the grip bar 18 from moving downwards, thus providing support for the user. To continue climbing, the user can remove the grip bar 18 and place it against the previous limiting bar 19. To move the grip bar 18 downwards again, it can be pulled out and placed back into the lower part of the sliding groove 17. The user can adjust the grip height with one hand, and the limiting bars 19 automatically lock, providing a stable support point and reducing the risk of imbalance.

[0023] A support structure is installed on the mounting plate 2, which is used to support the shelf 15.

[0024] Detailed Implementation Method Two, see attached document Figures 2-3 The support structure includes a rotating strip 8 rotatably connected to the side of the mounting plate 2 away from the insertion block 3. The rotating strip 8 is located at the bottom of the shelf 15. An abutment strip 9 is fixed to the end of the rotating strip 8 away from the mounting plate 2. A fixing plate 10 is fixed to the bottom of the shelf 15, and a groove is provided at the bottom of the fixing plate 10. The abutment strip 9 abuts into the groove. When the shelf 15 is not in use, it can fall and fit against the mounting plate 2 due to gravity through the rotating connection between it and the mounting plate 2. When the shelf 15 is needed, the shelf 15 is flipped upward and the rotating strip 8 is rotated so that the abutment strip 9 is inserted into the groove at the bottom of the fixing plate 10. The abutment strip 9 abuts against the fixing plate 10 and supports the shelf 15. An arc-shaped magnetic sheet is provided in the groove at the bottom of the fixing plate 10, and a corresponding magnetic sheet is also provided on the outside of the abutment strip 9, so that the abutment strip 9 can be attracted into the groove at the bottom of the fixing plate 10, reducing the possibility of the abutment strip 9 falling off.

[0025] A snap-fit ​​structure is installed between the insertion block 3 and the insertion slot 14. The snap-fit ​​structure is used to restrict the insertion block 3. The support structure, through its ingenious combination of connecting rods, slots, and magnets, enables the shelf to be unfolded and folded in a convenient, stable, and safe manner. Meanwhile, the snap-fit ​​structure, using a double-locking mechanism of spring clips and magnets, along with a beveled guide design, achieves a quick, stable, and flexible connection and height adjustment between the shelf and the ladder. These two structures work together to solve the core problems of traditional ladder auxiliary components: cumbersome operation, poor stability, and unchanging adjustment methods.

[0026] Detailed Implementation Method 3, see Appendix Figure 4The snap-fit ​​structure includes an installation groove 4 set inside the insertion block 3, a snap-fit ​​block 5 slidably connected inside the installation groove 4, a snap-fit ​​slot 6 set inside the ladder 1 at a position corresponding to the insertion groove 14, and the snap-fit ​​slot 6 is connected to the insertion groove 14, the snap-fit ​​block 5 is inserted into the snap-fit ​​slot 6, and a spring 7 is also installed inside the installation groove 4, the spring 7 is connected to the snap-fit ​​block 5. After the insertion block 3 is inserted into one of the insertion slots 14, the locking block 5 is set to lock into the slot 6. The spring 7 is set to spring the locking block 5 tightly into the slot 6, thereby restricting the movement of the insertion block 3. When it is necessary to change the position of the insertion block 3 inside the insertion slot 14, the insertion block 3 can be directly pulled out. The locking block 3 has inclined surfaces 16 on both sides near the slot 6, which allows the locking block 5 to retract into the mounting slot 4, and then the insertion block 3 can be pulled out. Furthermore, a first magnet 11 is fixed to the end of the insertion block 3 near the ladder 1. A second magnet 12 is set in the insertion slot 14 at the position corresponding to the first magnet 11. The first magnet 11 and the second magnet 12 attract each other. Through this arrangement, after the first magnet 11 is inserted into the insertion slot 14, it attracts the second magnet 12, thereby further stabilizing the insertion block 3. In addition, the insertion block 3 can be quickly disassembled and repositioned to adapt to different working height requirements; This snap-fit ​​structure cleverly balances the traditional contradiction between "connection stability" and "operational ease" by combining the mechanical self-locking of the spring-loaded latch with the magnetic attraction of the magnetic plate. It successfully replaces cumbersome methods such as bolt fixing, providing a user experience similar to a professional quick-release mechanism, and improving the height adaptability and operational efficiency of the entire book organizer ladder.

[0027] The ladder was tested using a simulated ladder: 2.5 meters high, 1.5 meters long sliding groove, 35 mm diameter handle (1 mm deep anti-slip texture on the surface). The limit bar had a 45° tilt angle, a torsion spring torque of 0.8 N·m, and a stop bar thickness of 5 mm.

[0028] The grip bar experiences ≤10N resistance when moving within the sliding groove. After locking, it can withstand a downward vertical force of 200N (simulating the pulling force of an adult's single arm) without displacement or deformation. After 50 consecutive adjustments, the torsion spring's elasticity decay is <3%, meeting standards. The shelf is made of anodized aluminum alloy, with an edge blocking bracket height of 50mm. The rotating bar and the fixed plate groove are attracted by neodymium iron boron magnets. After loading 20kg of books, the shelf's maximum deflection is <2mm, and the magnetic connection remains secure. When simulating a ladder tilted at 15°, the books do not slip, and the blocking bracket effectively limits displacement. The spring elasticity coefficient is 50N / mm, the angle of the locking block's inclined surface is 30°, and the gap between the insertion block and the ladder is 0.5mm. The distance between the first and second magnets is 1mm, and the magnetic force is 5N. After 500 consecutive insertions and removals, the spring fatigue deformation is <5%, and the magnetic force decay is <8%. The accuracy error of the locking block and slot is ≤0.1mm, with no jamming or detachment observed.

[0029] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A stable and safe book-organizing ladder for libraries, comprising a ladder (1), characterized in that: The ladder (1) has a plurality of insertion slots (14) on one side, and an insertion block (3) is inserted into one of the insertion slots (14). An installation plate (2) is fixed on the side of the insertion block (3) away from the ladder (1). A shelf (15) is rotatably connected to the side of the installation plate (2) away from the insertion block (3). The ladder (1) has sliding grooves (17) on both sides, and a gripping rod (18) is provided in the sliding groove (17). Multiple limiting structures are installed in the sliding groove (17) to limit the movement of the gripping rod (18). A support structure is installed on the mounting plate (2) to support the shelf (15). A snap-fit ​​structure is installed between the insertion block (3) and the insertion groove (14) to limit the insertion block (3).

2. The stable and safe library book sorting ladder according to claim 1, characterized in that: The limiting structure includes mounting pieces (20) fixed on both sides of the sliding groove (17). A limiting strip (19) is rotatably connected inside the mounting piece (20). Both limiting strips (19) face each other and are obliquely upward. A torsion spring (21) is installed at the position where the limiting strip (19) is rotatably connected to the mounting piece (20). A blocking strip (22) is fixed at the bottom of the mounting piece (20) and at the bottom of the limiting strip (19).

3. The stable and safe library book sorting ladder according to claim 1, characterized in that: The support structure includes a rotating bar (8) rotatably connected to the side of the mounting plate (2) away from the insertion block (3). The rotating bar (8) is disposed at the bottom of the shelf (15). An abutment bar (9) is fixed at one end of the rotating bar (8) away from the mounting plate (2). A fixing plate (10) is fixed at the bottom of the shelf (15), and a groove is provided at the bottom of the fixing plate (10). The abutment bar (9) abuts into the groove.

4. The stable and safe book sorting ladder for libraries according to claim 1, characterized in that: The snap-fit ​​structure includes an installation groove (4) disposed inside the insertion block (3), a snap-fit ​​block (5) is slidably connected in the installation groove (4), a snap-fit ​​slot (6) is disposed in the ladder (1) at a position corresponding to the insertion groove (14), and the snap-fit ​​slot (6) is connected to the insertion groove (14), the snap-fit ​​block (5) is inserted into the snap-fit ​​slot (6), and a spring (7) is also installed in the installation groove (4), the spring (7) is connected to the snap-fit ​​block (5).

5. The stable and safe library book sorting ladder according to claim 4, characterized in that: The card block (5) has inclined surfaces (16) on both sides near the card slot (6).

6. The stable and safe book sorting ladder for libraries according to claim 4, characterized in that: The insertion block (3) has a first magnet piece (11) fixed at one end near the ladder (1), and a second magnet piece (12) is provided in the insertion slot (14) at the position corresponding to the first magnet piece (11), and the first magnet piece (11) and the second magnet piece (12) attract each other.

7. The stable and safe library book sorting ladder according to claim 1, characterized in that: A blocking bracket (13) is provided at the top edge of the shelf (15).

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