A planar truss steel ladder structure

Abstract

The utility model discloses a kind of plane truss steel cat ladder structures, including two groups of parallel vertical setting ladder stand column, the top of ladder stand column is equipped with the hanging part for hanging in plane truss upper chord, sliding sleeve is set in the telescopic adjusting section of ladder stand column lower part, length adjustment locking mechanism is equipped between telescopic adjusting section and ladder stand column, and, several ladder boards are vertically spaced between ladder stand column and telescopic adjusting section;Wherein, ladder stand column is hollow profile, its side wall is provided with the sliding slot of axial extension;The upper portion of telescopic adjusting section is equipped with the sliding part matched with sliding slot, sliding part is guided sliding in sliding slot and is fixed with ladder stand column in setting position by length adjustment locking mechanism.The utility model can be adjusted according to the height difference of plane truss in different engineering projects between telescopic adjusting section and ladder stand column, thereby avoid the limitation that traditional fixed steel cat ladder cannot adapt to different height.

Description

Technical Field

[0001] This utility model relates to a planar truss steel ladder structure. Background Technology

[0002] With the rapid development of modern steel structure engineering, planar trusses are widely used as the main roof load-bearing structure in large-space buildings such as stadiums, industrial plants, and exhibition centers. During the installation, welding, corrosion protection, and subsequent maintenance of trusses, workers frequently need to perform high-altitude operations above and to the sides of the trusses. Therefore, safe and reliable operating channels and climbing facilities are crucial to ensuring construction safety and efficiency.

[0003] Currently, fixed steel ladders are mainly used for climbing planar trusses on construction sites. These ladders are usually prefabricated using welding or bolting, and their overall height is not adjustable. Because the height of planar trusses varies significantly across different projects (typically ranging from 3 to 8 meters), fixed ladders have poor versatility and often require individual design and fabrication for each project, resulting in material waste and increased costs. Furthermore, fixed ladders occupy a large amount of space during transportation and storage, and have a low reuse rate.

[0004] Therefore, a planar truss steel ladder structure is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a planar truss steel ladder structure to solve the problems mentioned in the background art, such as the fixed steel ladder having an unadjustable overall height and low reusability.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a planar truss steel ladder structure, comprising: Two sets of parallel vertically arranged ladder columns, the top of which is provided with a hanging part for hanging on the upper chord of the planar truss; A telescopic adjustment section is slidably sleeved at the lower part of the ladder frame column, and a length adjustment locking mechanism is provided between the telescopic adjustment section and the ladder frame column; And, a number of ladder plates are arranged vertically between the ladder frame columns and the telescopic adjustment section; The ladder column is a hollow profile with an axially extending groove on its side wall; the upper part of the telescopic adjustment section is provided with a sliding part that cooperates with the groove. The sliding part is guided and slids within the groove and is fixed to the ladder column at a set position by the length adjustment locking mechanism.

[0007] Preferably, the length adjustment locking mechanism includes a locking pin vertically disposed beside the sliding part, a plurality of positioning holes formed on the side wall of the ladder column, and a fastening nut disposed at the end of the locking pin; the locking pin passes through the positioning holes and the fastening nut locks the telescopic adjustment section to the ladder column.

[0008] Preferably, the positioning hole is inverted J-shaped and consists of a vertical guide groove and an arc locking groove; the center of the arc locking groove is higher than the center line of the vertical guide groove, and the locking pin forms a self-locking limit after sliding from the vertical guide groove into the arc locking groove.

[0009] Preferably, the hook-shaped part is an arc-shaped hook structure, and its radius of curvature is adapted to the diameter of the upper chord of the planar truss.

[0010] Preferably, the ladder plate is detachably connected to the ladder frame column and the telescopic adjustment section, and the connection between the ladder plate and the ladder frame column and the telescopic adjustment section is provided with a quick disassembly and assembly structure.

[0011] Preferably, the quick-assembly structure includes a plug groove formed at the end of the ladder plate and a plug connector provided on the ladder frame column / telescopic adjustment section, wherein the plug groove and the plug connector are connected by a transverse locking pin.

[0012] Preferably, the upper surface of the ladder plate is stamped with anti-slip teeth, and the ladder plate has drainage holes that penetrate the upper and lower surfaces, and the drainage holes are arranged in a matrix.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model uses a length adjustment and locking mechanism between the telescopic adjustment section and the ladder frame column. This ladder structure can be adjusted according to the height differences of the planar truss in different engineering projects, thereby avoiding the limitation of traditional fixed steel ladders that cannot adapt to different heights, and improving versatility and adaptability.

[0014] The ladder structure features detachable connections and a quick-assembly / disassembly mechanism, which allows for convenient and rapid assembly and disassembly during construction and subsequent maintenance, saving time and labor and improving construction efficiency.

[0015] The design incorporates an arc-shaped hook structure for the connecting parts, which is compatible with the upper chord of the planar truss, enhancing the stability of the connection between the ladder and the truss and ensuring the safety of workers. Furthermore, the length adjustment locking mechanism is equipped with a self-locking limit function, preventing the adjustable section from loosening due to vibration or external forces during use, further improving safety.

[0016] The anti-slip teeth stamped on the upper surface of the ladder board can effectively increase friction during climbing and prevent slipping, especially in wet or rainy environments, which can significantly improve the safety of workers.

[0017] The drainage holes on the ladder board effectively drain water, prevent water accumulation, and avoid the ladder surface from becoming slippery due to water buildup, thus enhancing safety during use.

[0018] Compared to traditional fixed steel ladders, this design adopts a modular, adjustable, and detachable structure, which solves the problems of transportation, storage, and space occupation of fixed steel ladders, reduces material waste and storage space occupation, and improves its reuse efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the back side structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the ladder support column structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the telescopic adjustment section structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the ladder plate structure according to an embodiment of the present utility model; Figure 6 This is an enlarged schematic diagram of the structure at point A in an embodiment of this utility model.

[0020] In the diagram: 1. Ladder upright; 11. Slide groove; 2. Hanging part; 3. Telescopic adjustment section; 31. Sliding part; 4. Length adjustment locking mechanism; 41. Locking pin; 42. Positioning hole; 421. Vertical guide groove; 422. Arc locking groove; 43. Fastening nut; 5. Ladder plate; 51. Anti-slip teeth; 52. Drainage hole; 6. Quick disassembly structure; 61. Connector; 62. Horizontal locking pin. Detailed Implementation

[0021] To address the issues of fixed steel ladders having non-adjustable overall height and low reusability, this utility model provides a planar truss steel ladder structure. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Please see Figure 1-6 This utility model provides a planar truss steel ladder structure, comprising: Two sets of parallel vertically arranged ladder columns 1, the top of each ladder column 1 is provided with a hook part 2 for hanging on the upper chord of the planar truss; the hook part 2 is an arc-shaped hook structure, and its radius of curvature is adapted to the diameter of the upper chord of the planar truss.

[0023] A telescopic adjustment section 3 is slidably fitted onto the lower part of the ladder frame column 1. A length adjustment locking mechanism 4 is provided between the telescopic adjustment section 3 and the ladder frame column 1. The length adjustment locking mechanism 4 includes a locking pin 41 vertically disposed beside the sliding part 31, several positioning holes 42 formed on the side wall of the ladder frame column 1, and a fastening nut 43 at the end of the locking pin 41. The locking pin 41 passes through the positioning holes 42 and locks the telescopic adjustment section 3 to the ladder frame column 1 through the fastening nut 43. The positioning holes 42 are inverted J-shaped and are composed of a vertical guide groove 421 and an arc locking groove 422. The center of the arc locking groove 422 is higher than the center line of the vertical guide groove 421. After the locking pin 41 slides from the vertical guide groove 421 into the arc locking groove 422, it forms a self-locking limit.

[0024] In addition, a number of ladder plates 5 are arranged vertically between the ladder frame column 1 and the telescopic adjustment section 3; the upper surface of the ladder plate 5 is stamped with anti-slip teeth 51, and the ladder plate 5 is provided with drainage holes 52 that penetrate the upper and lower surfaces, and the drainage holes 52 are arranged in a matrix.

[0025] The ladder plate 5 is detachably connected to the ladder frame column 1 and the telescopic adjustment section 3. A quick-release structure 6 is provided at the connection between the ladder plate 5 and the ladder frame column 1 and the telescopic adjustment section 3. The quick-release structure 6 includes a plug groove formed at the end of the ladder plate 5 and a plug connector 61 provided at the ladder frame column 1 / telescopic adjustment section 3. The plug groove and the plug connector 61 are connected by a transverse locking pin 62.

[0026] The ladder column 1 is a hollow profile with an axially extending groove 11 on its side wall; the upper part of the telescopic adjustment section 3 is provided with a sliding part 31 that cooperates with the groove 11. The sliding part 31 is guided and slids in the groove 11 and is fixed to the ladder column 1 at a set position by the length adjustment locking mechanism 4.

[0027] The working principle of the planar truss steel ladder structure provided by this utility model is as follows: two sets of ladder columns 1 are placed vertically and parallel to ensure that their bottoms are stably supported on the ground or a designated platform.

[0028] The overall length of the ladder is adjusted by sliding telescopic adjustment section 3 according to the truss height. The sliding part 31 slides within the groove 11 on the side wall of the ladder column 1 to ensure a smooth and stable adjustment process.

[0029] After the telescopic adjustment section 3 is adjusted to the appropriate position, align the locking pin 41 with the positioning hole 42 on the side wall of the ladder column 1.

[0030] Rotate the locking pin 41 so that it passes through the vertical guide groove 421 and then slides into the arc locking groove 422. Since the center of the arc locking groove 422 is higher than the center line of the vertical guide groove 421, the locking pin 41 will form a self-locking limit, ensuring that the telescopic adjustment section 3 and the ladder column 1 are firmly fixed in the set position.

[0031] Finally, use a wrench to tighten the locking nut 43 to further enhance the locking effect.

[0032] Move the assembled ladder as a whole to the bottom of the planar truss.

[0033] The hook-on part 2 at the top of the ladder column 1 is hooked onto the upper chord of the planar truss. Since the radius of curvature of the hook-on part 2 is compatible with the pipe diameter of the upper chord of the planar truss, a tight and stable hook-on can be achieved, effectively preventing the ladder from slipping.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planar truss steel ladder structure, characterized in that, include: Two sets of parallel vertically arranged ladder columns (1), the top of the ladder column (1) is provided with a hanging part (2) for hanging on the upper chord of the planar truss. A telescopic adjustment section (3) is slidably sleeved on the lower part of the ladder column (1), and a length adjustment locking mechanism (4) is provided between the telescopic adjustment section (3) and the ladder column (1). And, a number of ladder plates (5) are arranged vertically between the ladder column (1) and the telescopic adjustment section (3); The ladder column (1) is a hollow profile with an axially extending groove (11) on its side wall; the upper part of the telescopic adjustment section (3) is provided with a sliding part (31) that cooperates with the groove (11). The sliding part (31) slides within the groove (11) and is fixed to the ladder column (1) at a set position by the length adjustment locking mechanism (4).

2. The planar truss steel ladder structure according to claim 1, characterized in that: The length adjustment locking mechanism (4) includes a locking pin (41) vertically disposed on the side of the sliding part (31), a plurality of positioning holes (42) opened on the side wall of the ladder column (1), and a fastening nut (43) disposed at the end of the locking pin (41); the locking pin (41) passes through the positioning holes (42) and locks the telescopic adjustment section (3) to the ladder column (1) through the fastening nut (43).

3. The planar truss steel ladder structure according to claim 2, characterized in that: The positioning hole (42) is inverted J-shaped and is composed of a vertical guide groove (421) and an arc locking groove (422). The center of the arc locking groove (422) is higher than the center line of the vertical guide groove (421). The locking pin (41) slides into the arc locking groove (422) from the vertical guide groove (421) to form a self-locking limit.

4. The planar truss steel ladder structure according to claim 3, characterized in that: The hook part (2) is an arc-shaped hook structure, and its radius of curvature is adapted to the diameter of the upper chord of the planar truss.

5. A planar truss steel ladder structure according to claim 4, characterized in that: The ladder plate (5) is detachably connected to the ladder frame column (1) and the telescopic adjustment section (3), and a quick disassembly structure (6) is provided at the connection between the ladder plate (5) and the ladder frame column (1) and the telescopic adjustment section (3).

6. A planar truss steel ladder structure according to claim 5, characterized in that: The quick-assembly structure (6) includes a plug groove formed at the end of the ladder plate (5) and a plug joint (61) provided on the ladder column (1) / telescopic adjustment section (3). The plug groove and the plug joint (61) are connected by a transverse locking pin (62).

7. A planar truss steel ladder structure according to claim 1, characterized in that: The upper surface of the ladder plate (5) is stamped with anti-slip teeth (51), and the ladder plate (5) is provided with drainage holes (52) that penetrate the upper and lower surfaces. The drainage holes (52) are arranged in a matrix.

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