A mobile ladder fixing limiter device

Abstract

The utility model provides a kind of be applicable to mobile ladder fixing positioner device, comprising: limit plate, one side edge is equipped with placing groove, and placing groove is used to limit the position of ladder placement;Hook hole, interval is equipped with in limit plate both sides, and is set apart from limit plate another side edge, hook hole is used to fix the position of ladder;Fixed hole, interval is equipped with multiple and is respectively equipped in limit plate other two sides.The application has two different ways of installing limit plate on wall, one is fixed on the top surface of wall, and the other is fixed on the side wall of wall to adapt to different wall height conditions;Operator can buckle safety rope into safety rope hanging point to ensure the safety of personnel, hook hole can hook ladder through hook to ensure the stability of ladder, to avoid ladder to fall;First limit piece and second limit piece can be relatively translated, and the distance between placing groove is adjusted to adapt to the width of different ladders.

Description

Technical Field

[0001] This utility model relates to the field of ladder limiting, and in particular to a fixed limiting device suitable for mobile ladders. Background Technology

[0002] Ladders, as a very common tool, play an important role in our daily lives and work. They provide a simple, flexible, and efficient way to move up and down, and are widely used. Choosing the right ladder and using it correctly and safely can make the work process more convenient and efficient. Currently, ladders are frequently used in the operation and maintenance of hydrological telemetry station equipment and facilities. Most hydrological telemetry stations are independent buildings without fixed ladders inside, and are mostly located outdoors. When maintenance personnel repair equipment and facilities on the roof, they use portable mobile ladders for high-altitude operations. This can cause the ladders to become unstable and unreliable, leading to tipping over and potential safety risks due to sliding or overturning.

[0003] In related technologies, when using ladders for working at heights, the ladders are usually tilted at an appropriate angle against a sturdy wall or supporting surface to ensure their stability and load-bearing capacity. The ideal tilt angle is generally around 75 degrees, meaning the distance between the bottom of the ladder and the wall is approximately one-quarter of the ladder's total height. This ensures the ladder is not prone to slipping backward while providing good support. For further safety, another person is usually needed to hold the ladder steady from below to prevent it from tipping over or sliding due to uneven force, slippery ground, or excessive movement by the operator.

[0004] However, this method has obvious drawbacks. First, escalator operators may become fatigued, distracted, or unable to react promptly to swaying or slipping of the ladder due to sudden situations, increasing the risk of accidents. Second, the strength of manual support is limited and cannot completely withstand large external impacts, such as violent movements by operators or strong winds, which may still cause the ladder to become unstable. Utility Model Content

[0005] The main purpose of this utility model is to provide a fixed limit device for mobile ladders, which solves the problem that ladders need to be held by people when in use.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a device for fixing and limiting mobile ladders, comprising: The limiting plate has a placement groove on one side, which is used to limit the placement position of the ladder; Hook holes are spaced apart on both sides of the limiting plate and located away from the other side of the limiting plate. The hook holes are used to fix the position of the ladder. The fixing holes are spaced out and are located on the other two sides of the limiting plate.

[0007] In the preferred embodiment, a safety rope attachment point is provided on the limiting plate, and the safety rope attachment point is located between two hook holes.

[0008] In the preferred embodiment, a fixing structure is provided at intervals on one side of the bottom surface of the limiting plate.

[0009] In the preferred embodiment, the limiting plate includes a first limiting member and a second limiting member that can be translated relative to each other. Both the first limiting member and the second limiting member have a slot on one side, and the two slots form a placement groove.

[0010] In the preferred embodiment, the fixing structure includes a support rod that is tilted and detachably connected to the L-shaped plate and a fixing rod, the fixing rod being vertically and fixedly connected to the bottom surface of the limiting plate, and the L-shaped plate being detachably connected to the bottom surface of the limiting plate.

[0011] In the preferred embodiment, the first limiting member is provided with a positioning groove, and the second limiting member is provided with a positioning block, which is slidably connected to the positioning groove.

[0012] In the preferred embodiment, both the bottom surfaces of the first and second limiting members are provided with rectangular grooves.

[0013] In the preferred embodiment, sliding blocks are provided on both sides of the positioning block, and sliding grooves are provided on both sides of the positioning groove, with the sliding blocks slidably locked in the sliding grooves.

[0014] In the preferred embodiment, a rectangular hole is provided on the rectangular groove, and the rectangular holes provided on the first limiting member and the second limiting member are stacked on top of each other.

[0015] In the preferred embodiment, locking bolts are provided in the two overlapping rectangular holes, and nuts are provided on the locking bolts.

[0016] The beneficial effects of this utility model on a fixed limiter device for mobile ladders are as follows: 1. The limiting plate has two different ways of being installed on the wall: one is to fix it to the top surface of the wall, and the other is to fix it to the side wall of the wall, to accommodate different wall heights; 2. The operator can fasten the safety rope buckle into the safety rope attachment point to ensure personnel safety. The hook hole can be used to hook the ladder to ensure the stability of the ladder and prevent it from tipping over. 3. The first and second limiting members can be moved relative to each other and the distance between the placement slots can be adjusted to accommodate different ladder widths. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a structural diagram of Embodiment 1 of the present invention; Figure 2 This is a bottom structural diagram of Embodiment 1 of this utility model; Figure 3 This is a structural diagram of Embodiment 2 of this utility model; Figure 4 This is a diagram of the dispersed structure of Embodiment 2 of this utility model; Figure 5 This is a utility model Figure 4 Structural diagram of A in the middle; Figure 6 This is a bottom structural diagram of Embodiment 2 of this utility model; Figure 7 This is a utility model Figure 6 Structural diagram of B in the middle; Figure 8 This is a structural diagram of embodiment 3 of this utility model; Figure 9 This is a bottom structural diagram of embodiment 3 of this utility model; Figure 10 This is a utility model Figure 9 Structural diagram of C; Figure 11 This is a diagram of the dispersed structure of Embodiment 3 of this utility model.

[0018] In the diagram: 1. Limiting plate; 2. First limiting component; 3. Second limiting component; 4. Placement groove; 5. Safety rope hanging point; 6. Hook hole; 7. Fixing hole; 8. Positioning block; 9. Positioning groove; 10. Sliding block; 11. Sliding groove; 12. Rectangular groove; 13. Rectangular hole; 14. Locking bolt; 15. Nut; 16. Fixing structure; 161. Support rod; 162. L-shaped plate; 163. Fixing rod. Detailed Implementation

[0019] Example 1 like Figure 1-2 As shown, a fixed limiter device for mobile ladders is disclosed. One side of the limit plate 1 has a positioning groove 4 for positioning. This groove 4 effectively restricts the lateral movement of the ladder's bottom, ensuring the ladder remains in a preset stable position during use, thus improving placement accuracy and safety. Hook holes 6 are spaced apart on both sides of the limit plate 1, away from the other side. The hooks on the ladder can be securely engaged in the hook holes 6, thereby limiting the swinging of the upper part of the ladder and achieving double fixation from top to bottom, significantly enhancing the overall structural stability. Furthermore, multiple spaced fixing holes 7 are provided on the other two sides of the limit plate 1. These fixing holes 7 are used to engage expansion bolts or high-strength screws to securely install the limit plate 1 to the wall or the top surface of the building structure, ensuring the reliability of the device during long-term use. This design eliminates the need for manual ladder support, improving operational safety and effectively saving manpower. It is particularly suitable for industrial, warehousing, or high-altitude operation scenarios requiring frequent ladder use, offering advantages such as reasonable structure, convenient installation, safety, and high efficiency.

[0020] The safety rope attachment point 5 is located on the limiting plate 1 between the two hook holes 6, a reasonable position and reliable force distribution. When operators climb or work on the ladder, they can securely attach their personal safety rope to this attachment point to achieve fall protection during high-altitude operations. This design effectively improves operational safety and ensures the safety of personnel during ladder use, and is especially suitable for high-altitude or long-term high-altitude work scenarios.

[0021] The fixing structure 16 consists of a support rod 161, an L-shaped plate 162, and a fixing rod 163, used to enhance the stability of the connection between the limiting plate 1 and the wall. The fixing rod 163 is fixed to the bottom surface of the limiting plate 1 on the other side by welding or screws, serving as the main support anchor point; the L-shaped plate 162 is fastened to the bottom surface of the limiting plate 1 by screws, forming another connecting support. The support rod 161 is inclined, with its two ends connected to the fixing rod 163 and the L-shaped plate 162 by screws, forming a stable triangular support structure. This triangular layout fully utilizes the principle of geometric stability, effectively distributing the force and significantly improving the rigidity and deformation resistance of the overall structure, ensuring that the limiting plate 1 is more firmly and reliably fixed to the side wall of the wall. When the limiting plate 1 needs to be installed on the top surface of the wall, it can be directly fixed to the wall through the two pre-set fixing holes 7 and screws. Each set of fixing holes 7 has multiple holes spaced along the length direction, which not only enhances the reliability of the connection, but also allows the screw position to be adjusted according to actual installation needs, flexibly controlling the distance between the ladder and the wall, adapting to different usage environments, and improving installation adaptability and safety.

[0022] When the limiting plate 1 needs to be fixed to the side of the wall, it can be securely installed using the fixing structure 16. In this case, the through hole on the fixing rod 163 is used to insert screws, which connect the fixing rod 163 to the wall, thus firmly fixing the limiting plate 1 to the wall side. The support rod 161 and the L-shaped plate 162 together form an oblique support, creating a stable triangular structure with the fixing rod 163, effectively enhancing the overall anti-overturning capability. However, when the limiting plate 1 needs to be installed on the top surface of the wall, to ensure its stable placement, the support rod 161 and the L-shaped plate 162 must be removed to prevent their protruding structures from affecting the fit between the limiting plate and the top surface. This ensures applicability under different installation methods and improves safety and ease of operation.

[0023] like Figure 3-7 As shown, the difference between Example 2 and Example 1 is that: The limiting plate 1 consists of a first limiting member 2 and a second limiting member 3 that can move relatively sideways, providing good adjustability. Both the first limiting member 2 and the second limiting member 3 have corresponding aligned slots on the same side to accommodate and limit the side beams of the ladder, ensuring that the ladder does not shift laterally during use. On the bottom surface of the other side, the first limiting member 2 and the second limiting member 3 are respectively provided with fixing structures 16, facilitating a secure connection in different installation positions.

[0024] The first limiting member 2 has a positioning groove 9, and the second limiting member 3 has a corresponding positioning block 8. The positioning block 8 is embedded in the positioning groove 9, realizing a sliding connection between the two limiting members, thereby adjusting the total width of the limiting plate to adapt to ladder beams of different thicknesses. To improve the smoothness and stability of sliding, sliding blocks 10 are provided on both sides of the positioning block 8, and a sliding groove 11 is correspondingly provided on the inner wall of the positioning groove 9. The sliding block 10 can slide smoothly in the sliding groove 11. At the same time, the sliding groove 11 is designed as a rectangular groove 12 structure, which can effectively prevent the sliding block 10 from falling out and enhance the reliability of the connection. In addition, the safety rope attachment point 5 is set on the first limiting member 2, which facilitates the connection of the safety rope and further improves the safety of high-altitude operations. The overall structural design is reasonable, taking into account adjustability, stability and safety.

[0025] like Figure 8-11 As shown, the difference between Example 3 and Example 2 is that: Both the first limiting member 2 and the second limiting member 3 have rectangular grooves 12 on their bottom surfaces, and rectangular holes 13 are provided at corresponding positions for installing locking bolts 14. The nuts of the locking bolts 14 are embedded in the rectangular grooves 12, with their end faces flush with or slightly lower than the bottom surfaces of the limiting members. This effectively prevents a bulge from forming between the first limiting member 2 and the second limiting member 3 during splicing due to the protruding nuts, ensuring a tight and stable sliding fit. After the locking bolts 14 pass through the rectangular holes 13, they are tightened with nuts 15. When the first limiting member 2 and the second limiting member 3 slide relative to each other to a suitable position, so that the width of the placement groove 4 between the two parts is exactly matched with the size of the ladder side beam, tightening the nuts 15 will securely lock them together, achieving stepless width adjustment. This allows for the adaptation to ladders of various widths, improving the versatility and applicability of the device.

[0026] In addition, the first limiting member 2 and the second limiting member 3 are each provided with a set of fixing holes 7. After the limiting members are adjusted and locked, the entire limiting plate 1 can be firmly fixed to the top surface of the wall by passing screws through the fixing holes 7, ensuring that there is no displacement or loosening during use. This structural design takes into account both adjustment flexibility and connection reliability, satisfying both the convenience of installation and ensuring the safety and stability of high-altitude operations.

[0027] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A device for fixing and limiting movable ladders, characterized in that, include: The limiting plate (1) has a placement groove (4) on one side, which is used to limit the placement position of the ladder; Hook holes (6) are spaced apart on both sides of the limiting plate (1) and set away from the other side of the limiting plate (1). The hook holes (6) are used to fix the position of the ladder. Fixing holes (7) are provided at intervals and are respectively located on the other two sides of the limiting plate (1).

2. The device for fixing and limiting a mobile ladder according to claim 1, characterized in that, The limit plate (1) has a safety rope hanging point (5) located between two hook holes (6).

3. The device for fixing and limiting a mobile ladder according to claim 1, characterized in that, The bottom side of the limiting plate (1) is provided with a fixing structure (16) at intervals.

4. The device for fixing and limiting a mobile ladder according to claim 1, characterized in that, The limiting plate (1) includes a first limiting member (2) and a second limiting member (3) that are relatively translated. The first limiting member (2) and the second limiting member (3) are both provided with slots on one side, and the two slots form a placement slot (4).

5. A device for fixing and limiting mobile ladders according to claim 3, characterized in that, The fixed structure (16) includes a support rod (161) that is detachably connected to an L-shaped plate (162) and a fixing rod (163). The fixing rod (163) is vertically fixed to the bottom surface of the limiting plate (1), and the L-shaped plate (162) is detachably connected to the bottom surface of the limiting plate (1).

6. A device for fixing and limiting a mobile ladder according to claim 4, characterized in that, The first limiting member (2) is provided with a positioning groove (9), and the second limiting member (3) is provided with a positioning block (8), which is slidably connected to the positioning groove (9).

7. A device for fixing and limiting mobile ladders according to claim 4, characterized in that, The bottom surfaces of the first limiting member (2) and the second limiting member (3) are both provided with rectangular grooves (12).

8. A device for fixing and limiting a mobile ladder according to claim 6, characterized in that, The positioning block (8) has sliding blocks (10) on both sides, and the positioning groove (9) has sliding grooves (11) on both sides. The sliding blocks (10) are slidably locked in the sliding grooves (11).

9. A device for fixing and limiting mobile ladders according to claim 7, characterized in that, A rectangular hole (13) is provided on the rectangular groove (12), and the rectangular holes (13) provided on the first limiting member (2) and the second limiting member (3) are stacked together.

10. A device for fixing and limiting a mobile ladder according to claim 9, characterized in that, A locking bolt (14) is provided in the two overlapping rectangular holes (13), and a nut (15) is provided on the locking bolt (14).

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