Roof maintenance ladder

Abstract

The utility model relates to the field of building engineering roof construction, concretely relates to a roof overhauls cat ladder, include: set up in the embedded guide rail of roof wall body and with embedded guide rail sliding connection cat ladder main part, wherein, cat ladder main part includes two cat ladder stand column of presenting "7" character structure, and the cat ladder stand column between welding has the step steel sheet, there is certain angle between step steel sheet and cat ladder stand column, the cat ladder main part is provided with locking stop piece for with roof wall body locks, first pulley is fixed with through bolt nut in both sides of cat ladder stand column corner, first pulley is inbedded in embedded guide rail, the pulley frame and second pulley are provided with in cat ladder stand column bottom, second pulley is fixed in pulley frame through bolt nut, aims at realizing the recoverable, effective control use right.

Description

Technical Field

[0001] This utility model relates to the field of roof construction in building engineering, and specifically to a roof maintenance ladder. Background Technology

[0002] In the field of roof inspection and maintenance, roof access ladders are essential tools for professionals to inspect, repair, and maintain roof facilities. Currently, roof access ladders typically employ a single-strap structure, directly fixed to the exterior of the building wall using bolts, expansion bolts, and other connectors. This fixed installation method keeps the ladder in an extended position throughout use, making it impossible to fold and store or relocate it after professional work is completed, resulting in the ladder being exposed to the outdoor environment for extended periods.

[0003] From a usage perspective, because the single-staircase is permanently fixed and lacks protective measures, it is not only susceptible to erosion from natural factors such as wind, rain, and sun, leading to rust and aging of metal parts and rot and deformation of wooden parts, thus shortening the ladder's lifespan and increasing maintenance costs; more importantly, due to the lack of an effective access control mechanism, unauthorized personnel (such as children and untrained staff) can easily access and climb the ladder to reach the roof. On the one hand, unauthorized personnel climbing without professional knowledge and safety equipment are highly likely to suffer falls from heights, seriously threatening personal safety; on the other hand, unauthorized personnel climbing the roof may cause accidental damage to roof facilities or create safety hazards due to improper operation, while also increasing the difficulty and risk of building property management and security management. In addition, the fixed installation of the single-staircase also affects the aesthetics of the building facade and is inconsistent with the overall architectural style. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this application provides a roof maintenance ladder designed to achieve recyclability and effective control over usage rights.

[0005] The technical means adopted by this utility model to solve its technical problem is: a roof maintenance ladder, the improvement of which is that it includes a pre-embedded guide rail set in the roof wall and a ladder body slidably connected to the pre-embedded guide rail, wherein...

[0006] The main body of the ladder includes two ladder columns arranged in a figure-seven shape, with step steel plates welded between the ladder columns; there is a certain angle between the step steel plates and the ladder columns;

[0007] The ladder body is equipped with a locking device for locking with the roof wall;

[0008] The first pulleys are fixed to both sides of the corner of the ladder column by bolts and nuts, and the first pulleys are embedded in the pre-embedded guide rail;

[0009] The bottom of the ladder column is equipped with a pulley frame and a second pulley, and the second pulley is fixed in the pulley frame by bolts and nuts; the bottom of the ladder body is equipped with a manual locking mechanism.

[0010] The ladder body described in the above technical solution is provided with a manual locking mechanism at its bottom. The manual locking mechanism includes a threaded rod and a knob that pass through the pulley frame. When the end of the threaded rod abuts against the outer wall of the pre-embedded guide rail, the sliding of the ladder body is restricted by friction.

[0011] The included angle between the step steel plate and the ladder column in the above technical solution is 10°-30°.

[0012] The pre-embedded guide rails in the above technical solution include two rails arranged in parallel to each other, and grooves for the first pulley to roll are provided on the inner sidewalls of the two pre-embedded guide rails. The cross-section of the groove is U-shaped, and the first pulley rolls in contact with the sidewall of the groove.

[0013] In the above technical solution, a limiting block is provided at the top of the ladder column, and the limiting block is used to limit the upward movement limit position of the ladder body on the pre-embedded guide rail.

[0014] The step steel plate described in the above technical solution is provided with anti-slip texture, which is a raised stripe-like or grid-like structure.

[0015] In the above technical solution, the two ends of the step steel plate are respectively welded to two ladder columns, and a reinforcing rib is provided at the weld. The reinforcing rib is triangular, and its two right-angled sides are welded to the step steel plate and the ladder column respectively.

[0016] The above technical solution also includes protective railings installed on both sides of the ladder body. The protective railings are detachably connected to the ladder posts by bolts. The protective railings include handrails parallel to the long end of the ladder posts and vertical posts. The bottom of the posts is connected to the ladder posts by bolts, and the two ends of the handrails are welded to the posts respectively.

[0017] The beneficial effects of this utility model are:

[0018] Recyclability: The main body of the ladder is slidably connected to the pre-embedded guide rail and is assembled by detachable connection methods such as bolts and nuts. After the roof maintenance is completed, the main body of the ladder can be easily disassembled from the pre-embedded guide rail, realizing recycling and reuse, saving resources and costs.

[0019] Access Control: A locking mechanism is installed to lock the ladder to the roof and walls. Access to the ladder is controlled by the locking mechanism. The locking mechanism is only opened when maintenance is required to allow personnel to use the ladder. At other times, the ladder is locked to prevent unauthorized personnel from climbing it, thus improving safety and management efficiency.

[0020] Flexible sliding: The first pulley is fixed to both sides of the corner of the ladder column by bolts and nuts, and the second pulley is set at the bottom of the ladder column. The pulley is embedded in the pre-embedded guide rail. This design allows the main body of the ladder to slide flexibly in the pre-embedded guide rail, which makes it easy to unfold the ladder when needed and fold it up when not needed, without taking up too much space. It also facilitates the movement and positioning of the ladder. Attached Figure Description

[0021] Figure 1 A side view of a roof maintenance ladder as shown in an embodiment of this utility model;

[0022] Figure 2 This is a front view of a roof maintenance ladder as shown in an embodiment of the present utility model;

[0023] Figure 3 This is a side view of a roof maintenance ladder in a locked state, as shown in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the handrail and upright shown in an embodiment of the present utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0027] like Figure 1-3 As shown, this utility model provides a roof maintenance ladder, including a pre-embedded guide rail 1 installed in the roof wall and a ladder body 2 slidably connected to the pre-embedded guide rail 1, wherein...

[0028] The ladder body 2 includes two ladder columns 21 arranged in a "7" shape, and a step steel plate 22 is welded between the ladder columns 21; there is a certain angle between the step steel plate 22 and the ladder columns 21.

[0029] The ladder body 2 is equipped with a locking device 3 for locking with the roof wall;

[0030] Optionally, the ladder column 2 can be made of steel tubes commonly found on construction sites, and the pre-embedded guide rail 1 can also be made of readily available channel steel, thereby reducing the cost of use.

[0031] The ladder column 21 has first pulleys 23 fixed on both sides of the bend with bolts and nuts, and the first pulleys 23 are embedded in the pre-embedded guide rail 1;

[0032] The bottom of the ladder body 2 is provided with a pulley frame 24 and a second pulley 25. The second pulley 25 is fixed in the pulley frame 24 by bolts and nuts. The bottom of the ladder body 2 is also provided with a manual locking mechanism.

[0033] The roof maintenance ladder provided by this utility model can be used simply by pulling the main body of the ladder outwards. The first pulley at the corner slides downwards in the pre-embedded guide rail. When the ladder is extended until the step steel plate is horizontal, the main body of the ladder at the corner has contacted the parapet wall, and the first pulley can no longer slide downwards. At this point, the ladder can be used for maintenance. After use, the main body of the ladder is pushed towards the wall, and the first pulley at the corner slides upwards in the pre-embedded guide rail. When the main body of the ladder is parallel to the wall, the main body of the ladder can be locked to the wall by the locking device, so that the main body of the ladder and the wall are relatively fixed. The ladder cannot be pulled outwards at this time. Since the step steel plate is inclined upwards, people's heels cannot stand firmly, and unauthorized personnel cannot use the ladder to climb.

[0034] Through the above embodiments, this application can control access to the ladder, and it can only be used after a professional unlocks the ladder, which greatly reduces the safety risks caused by unauthorized personnel.

[0035] In an exemplary embodiment, the bottom of the ladder body is provided with a manual locking mechanism, which includes a threaded rod and a knob that pass through the pulley frame. When the end of the threaded rod abuts against the outer wall of the pre-embedded guide rail, the sliding of the ladder body is restricted by friction.

[0036] Mechanical friction locking effectively prevents the ladder from slipping unexpectedly when not in use (such as displacement caused by wind or vibration), providing a stable working platform for maintenance personnel and reducing the risk of falls from heights.

[0037] In an exemplary embodiment, the included angle between the step plate 22 and the ladder column 21 is in the range of 10°-30°.

[0038] When maintenance personnel climb the ladder carrying toolboxes, the slightly inclined steps allow them to maintain a three-point support posture naturally. When the toolbox is hung on the side, the body's center of gravity remains stably located on the center line of the ladder. Compared to a vertical step design, the physical exertion of a single climb is reduced by about 30%. At the same time, it can also restrict unauthorized personnel from using the ladder when it is locked.

[0039] In one possible implementation, the pre-embedded guide rail 1 includes two parallel rails, and each of the two pre-embedded guide rails 1 has a groove on its inner sidewall for the first pulley 23 to roll. The groove has a U-shaped cross-section, and the first pulley 23 rolls in contact with the sidewall of the groove.

[0040] The sidewalls of the U-shaped groove can form an effective physical limiting boundary for the first pulley, so that even if it encounters a sudden impact load (such as a 500N lateral force), the first pulley can still maintain contact and not derail.

[0041] In one possible implementation, a limiting block is provided at the top of the ladder column 21, and the limiting block is used to limit the upward movement limit position of the ladder body 2 on the pre-embedded guide rail 1.

[0042] Optionally, the limiting block may be a rubber block with a cushioning effect.

[0043] When maintenance personnel unlock the ladder by turning the knob and push it to the highest position, the limit block first contacts the end plate of the pre-embedded guide rail. The buffer rubber block is compressed and deformed to absorb the impact energy, avoiding direct metal-to-metal collision and generating sparks, thus significantly reducing the risk of structural fatigue damage.

[0044] In one possible implementation, the step plate 22 is provided with anti-slip texture, which is a raised stripe-like or grid-like structure.

[0045] The raised striped or grid-like structure effectively increases the friction between the sole and the step plate. When construction workers walk on the step plate, these patterns can embed into the sole's treads, preventing the sole from slipping and reducing the risk of slipping. This is especially true in wet, slippery conditions such as water or oil, significantly improving safety during climbing.

[0046] In one possible implementation, the two ends of the step steel plate 22 are respectively welded to two ladder columns 21, and a reinforcing rib is provided at the weld. The reinforcing rib is triangular, and its two right-angled sides are welded to the step steel plate and the ladder column respectively.

[0047] The triangular reinforcing ribs effectively distribute the load borne by the step steel plates, transferring the force to the ladder uprights and reducing stress concentration at the welds. This makes the connection between the step steel plates and the ladder uprights more stable, capable of withstanding greater weight and external forces, improving the overall structural strength and load-bearing capacity of the ladder, and ensuring safety during use. The reinforcing ribs also increase the rigidity of the connection points, reducing relative deformation and swaying between the step steel plates and the ladder uprights. Especially when people are climbing up and down the ladder, this reduces vibration and displacement caused by forces, making the ladder more stable and providing more reliable support for users.

[0048] In one possible implementation, the roof maintenance ladder further includes guardrails on both sides of the ladder body 2, the guardrails being detachably connected to the ladder posts 21 by bolts, such as... Figure 4 As shown, the guardrail includes a handrail 26 parallel to the long end of the ladder post and a vertically arranged upright 27. The bottom of the upright 27 is connected to the ladder post 21 by bolts, and the two ends of the handrail are welded to the upright respectively.

[0049] Installing guardrails can effectively prevent people from falling from either side when using ladders, providing reliable protection for users and reducing the risk of falls from heights; the handrails are easy for users to grip and provide stable support during climbing, helping to maintain body balance and further ensuring personnel safety.

[0050] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A roof maintenance ladder, characterized in that, include: The roof wall has pre-embedded guide rails and a ladder body that is slidably connected to the pre-embedded guide rails. The main body of the ladder includes two ladder columns in a "7" shape, and a step steel plate is welded between the ladder columns; there is a certain angle between the step steel plate and the ladder columns. The ladder body is equipped with a locking device for locking with the roof wall; The first pulleys are fixed to both sides of the corner of the ladder column by bolts and nuts, and the first pulleys are embedded in the pre-embedded guide rail; The bottom of the ladder column is equipped with a pulley frame and a second pulley, and the second pulley is fixed inside the pulley frame by bolts and nuts.

2. The roof maintenance ladder according to claim 1, characterized in that, The bottom of the ladder body is equipped with a manual locking mechanism, which includes a threaded rod and a knob that pass through the pulley frame. When the end of the threaded rod abuts against the outer wall of the pre-embedded guide rail, the sliding of the ladder body is restricted by friction.

3. A roof maintenance ladder according to claim 1, characterized in that, The included angle between the step steel plate and the ladder column is in the range of 10°-30°.

4. A roof maintenance ladder according to claim 1, characterized in that, The pre-embedded guide rails include two parallel rails, and each of the two pre-embedded guide rails has a groove on its inner sidewall for the first pulley to roll. The groove has a U-shaped cross-section, and the first pulley rolls in contact with the sidewall of the groove.

5. A roof maintenance ladder according to claim 1, characterized in that, A limit block is provided at the top of the ladder column, and the limit block is used to limit the upward movement limit of the ladder body on the pre-embedded guide rail.

6. A roof maintenance ladder according to claim 1, characterized in that, The step steel plate is provided with anti-slip texture, which is a raised stripe or grid structure.

7. A roof maintenance ladder according to claim 1, characterized in that, The two ends of the step steel plate are respectively welded to two ladder columns, and a reinforcing rib is provided at the weld. The reinforcing rib is triangular, and its two right-angled sides are welded to the step steel plate and the ladder column respectively.

8. A roof maintenance ladder according to claim 1, characterized in that, It also includes guardrails installed on both sides of the main body of the ladder. The guardrails are detachably connected to the ladder posts by bolts. The guardrails include handrails parallel to the long end of the ladder posts and vertical posts. The bottom of the posts is connected to the ladder posts by bolts, and the two ends of the handrails are welded to the posts respectively.

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