Structure for improving transverse bearing capacity of foot nail, guide rail connecting foot nail and crawling ladder foot nail

Abstract

The utility model belongs to the technical field of power transmission tower climbing equipment, and provides a structure for improving the transverse bearing capacity of a foot nail, a guide rail connecting foot nail and a ladder foot nail, the structure for improving the transverse bearing capacity of the foot nail comprises a ladder foot nail body and a supporting structure, and the supporting structure is sleeved on the ladder foot nail body to form a two-force-rod structure. One end of the crawling ladder foot nail body is a threaded section, the other end is a hexagon head or a bolt head, and an anti-skid groove is formed in the surface of the middle of the crawling ladder foot nail body. According to the utility model, the design and the function of the foot pin are obviously improved and broken through unprecedentedly. Aiming at the limitation of small transverse bearing capacity of a traditional foot nail in structure, namely the problem of limited bending load bearing capacity caused by pure cantilever beam design, the utility model ingeniously designs a supporting structure which is tightly matched with the foot nail and works together with the foot nail. The innovative design not only breaks through the structural constraint of a traditional foot nail, but also optimizes the foot nail into a more stable two-force rod structure.

Description

Technical Field

[0001] This utility model belongs to the technical field of power transmission tower climbing equipment, and specifically relates to a structure for improving the lateral bearing capacity of foot spikes, guide rail connecting foot spikes, and steel pipe climbing ladder foot spikes. Background Technology

[0002] Currently, transmission towers are generally equipped with foot spikes. These foot spikes were originally designed to assist workers in climbing and stepping on the towers more conveniently and safely when performing high-altitude operations such as tower maintenance, repair, or installation of new equipment. As a bridge connecting the tower structure and the workers, they ensure that personnel can move up and down the tower steadily and orderly, greatly improving work efficiency and providing initial protection for worker safety.

[0003] However, in actual working environments, especially when facing unexpected or emergency situations, workers often require more safety measures. In such cases, it is expected that these tower climbing spikes can have more functions, such as serving as fall protection anchors. This means that workers can securely attach safety ropes to the spikes, and in the event of an accidental fall, the ropes can immediately withstand the impact, providing an extra layer of safety for the workers and preventing them from falling from heights, thereby reducing the potential risk of personal injury.

[0004] Unfortunately, existing foot spikes have relatively simple structures, mostly employing a cantilever beam design. This type of structure has limited load-bearing capacity when subjected to lateral loads and bending, making it difficult to withstand significant impacts. To verify this, relevant organizations conducted a series of rigorous tests. In tests subjected to a 100kg impact load, the foot spikes generally exhibited significant bending deformation, with some even breaking directly at the root of the thread. This result clearly demonstrates that existing foot spikes have insufficient structural strength when facing large impacts, failing to provide adequate safety for workers.

[0005] Furthermore, during the 22kN static load test at the anchor point, the anchor bolts also exhibited significant deformation. These test results unanimously indicate that ordinary anchor bolts have significant limitations in design and materials, and cannot withstand the impact loads that workers might encounter from falls. Therefore, they cannot be used as reliable fall protection anchor points, which undoubtedly poses a significant challenge to the safety and reliability of power transmission tower operations.

[0006] In light of this situation, there is an urgent need to develop a new type of foot spike to effectively improve the safety and reliability of power transmission tower operations. This foot spike must not only meet the basic needs of workers climbing and stepping on it daily, but also undergo comprehensive optimization and upgrading in terms of structure and materials. By adopting a more scientific and rational structural design and higher-strength materials, the new foot spike can withstand greater impact loads, thus truly playing its important role as a fall protection anchor. In this way, whether in normal operations or in emergencies, workers can receive more comprehensive, effective, and reliable safety protection, thereby ensuring the safe and smooth operation of power transmission tower work. Utility Model Content

[0007] The purpose of this utility model is to provide a structure that enhances the lateral load-bearing capacity of foot spikes, a guide rail connecting foot spikes and ladder foot spikes, so as to solve the problem that existing foot spikes cannot withstand the impact load of workers falling.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] In the first aspect, this utility model provides a structure for improving the lateral load-bearing capacity of the climbing spikes, including a climbing spike body and a support structure. The support structure is sleeved on the climbing spike body, forming a triangular stable support two-force bar structure.

[0010] Furthermore, one end of the ladder foot spike body is a threaded section, and the other end is a hexagonal head or bolt head. The middle surface of the ladder foot spike body is machined with anti-slip grooves.

[0011] Furthermore, the support structure includes a support ring, a support rod, and a support seat. The side of the support ring is connected to one end of the support rod, and the other end of the support rod is connected to the support seat. The support seat is fitted onto the ladder foot nail body on one side of the threaded section, and the support ring is fitted onto the ladder foot nail body on the side away from the threaded section.

[0012] Furthermore, the ladder foot nails on both sides of the support base are equipped with hexagonal nuts one and two. After the ladder foot nails pass through the support ring, hexagonal nuts two and the holes on the support base, they are installed on the tower material of the angle steel tower through hexagonal nuts one.

[0013] Furthermore, the ladder foot spikes are made of 6.8 grade M16 bolts.

[0014] Furthermore, symmetrical hooks to prevent the safety rope from falling off are provided on both sides of the horizontal position of the support ring.

[0015] Secondly, this utility model provides a guide rail connecting foot nail, including the aforementioned structure for enhancing the lateral bearing capacity of the foot nail and a T-shaped guide rail, the T-shaped guide rail being sleeved on the other end of the ladder foot nail body.

[0016] Furthermore, the ladder foot nails on both sides of the T-shaped guide rail are equipped with hexagonal nuts three and four for fixing.

[0017] Thirdly, this utility model provides a ladder foot spike, including the structure for improving the lateral bearing capacity of the foot spike, an arc-shaped washer and an arc-shaped support base, the arc-shaped washer and the arc-shaped support base being disposed between hexagonal nut one and hexagonal nut two, and a steel pipe being disposed between the arc-shaped washer and the arc-shaped support base.

[0018] Furthermore, the arc-shaped gasket and the arc-shaped support are arranged opposite each other, and the arc surface is in contact with the outer surface of the steel pipe.

[0019] Compared with the prior art, the present invention has the following technical effects:

[0020] This invention presents a highly innovative and practical structure for enhancing the lateral load-bearing capacity of foot spikes, achieving unprecedented and significant improvements and breakthroughs in both the design and function of the spikes. Addressing the structural limitations of traditional foot spikes, namely the limited bending load-bearing capacity resulting from a simple cantilever beam design, this invention ingeniously designs a support structure that works closely with the foot spike. This innovative design not only breaks free from the structural constraints of traditional foot spikes but also optimizes them into a more stable two-force member structure.

[0021] In this new structure, the foot spikes no longer bear bending loads alone. Instead, through the ingenious layout of the support structure, the bending loads that originally acted on the foot spikes are cleverly transformed into tensile loads. This transformation greatly enhances the lateral load-bearing capacity of the foot spikes, enabling them to exhibit superior stability and safety when facing complex and ever-changing working environments.

[0022] The optimized M16 foot spikes fully comply with the stringent requirements stipulated in GB 30862-2014 Fall Protection Attachment Devices. This means that during tower climbing operations, workers can securely attach safety ropes to these optimized foot spikes, thus obtaining more reliable safety protection in the face of accidental fall risks.

[0023] In summary, the structure for enhancing the lateral load-bearing capacity of foot spikes provided by this invention represents a significant breakthrough in design concept and demonstrates superior performance in practical applications. By ingeniously designing a support structure that works in conjunction with the foot spikes, this invention successfully optimizes the simple cantilever beam structure of ordinary foot spikes under bending loads into a two-force member structure system with stable triangular support. In this novel structural system, the force distribution on the foot spikes undergoes a fundamental transformation, changing from bending loads to tensile loads, thereby greatly enhancing their lateral load-bearing capacity. After rigorous calculations and experimental verification, the M16 foot spikes fully meet the load requirements specified in national standards, providing stronger protection for the safety of tower climbing personnel.

[0024] To prevent the end ring from slipping off the foot spike, this invention adds anti-suspension hooks to both sides of the support ring at the horizontal position, thus preventing the safety rope from falling off. This design not only improves the lateral load-bearing capacity of the foot spike but also serves as a fall protection attachment point.

[0025] The T-shaped fall arrestor rigid guide rail connecting foot nail of this utility model modifies the hexagonal head at the tail of the bolt into a double-ended bolt, with one end connected to the tower body and the other end connected to the T-shaped fall arrestor rigid guide rail. This design improves the lateral load-bearing capacity of the foot nail, enabling it to function as a fall protection attachment point; on the other hand, while ensuring safety, it simplifies and optimizes the existing connection structure between the T-shaped guide rail and the tower, improving the quality of guide rail installation.

[0026] The steel pipe ladder foot spike structure of this utility model is designed by machining the contact surface between the support base and the steel pipe into a concave arc surface that conforms to the curvature of the outer surface of the steel pipe, while the contact surface with the nut is designed as a planar structure. An arc-shaped washer is designed on the other side of the steel pipe, with its contact surface also machined into a concave arc surface that conforms to the curvature of the outer surface of the steel pipe, and its contact surface with the nut designed as a planar structure. This optimizes the steel pipe ladder foot spike from a conventional welded component to a bolted connection. This design, on the one hand, optimizes the welded component into a bolted connection, avoiding the welding defects that may exist in welded foot spikes; on the other hand, it improves the lateral load-bearing capacity of the foot spike, enabling it to function as a fall protection attachment point. Attached Figure Description

[0027] Figure 1 This is a front view of a structure for improving the lateral load-bearing capacity of foot spikes according to this utility model;

[0028] Figure 2 This is a top view of a structure for improving the lateral load-bearing capacity of foot spikes according to the present invention;

[0029] Figure 3 This is a left view of a structure for improving the lateral load-bearing capacity of foot spikes according to this utility model;

[0030] Figure 4 This is a right view of the structure for preventing the safety rope from falling off, which is a structure for improving the lateral load-bearing capacity of foot nails according to this utility model.

[0031] Figure 5 This is a top view of the structure for preventing the safety rope from falling off, which is a structure for improving the lateral load-bearing capacity of foot nails according to this utility model.

[0032] Figure 6 This is a top view of the T-shaped guide rail connecting the foot nail rod system structure, which is a structure for improving the lateral load-bearing capacity of foot nails according to this utility model, installed on a T-shaped guide rail.

[0033] Figure 7 This is a top view of the steel pipe ladder foot nail rod system structure, which is a structure for improving the lateral bearing capacity of foot nails according to this utility model, installed on a steel pipe;

[0034] Figure 8 This is a top view of a steel pipe ladder T-shaped guide rail connecting to the foot nail rod system structure, which is a structure for improving the lateral load-bearing capacity of foot nails according to this utility model, installed on a steel pipe.

[0035] In the diagram: 1. Threaded section; 2. Hex nut one; 3. Hex nut two; 4. Anti-slip groove; 5. Support ring; 6. Ladder foot nail body; 7. Support rod; 8. Support base; 9. Anti-safety rope detachment hook; 10. Hex nut three; 11. Hex nut four; 12. T-shaped guide rail; 13. Arc-shaped washer; 14. Arc-shaped support base; 15. Steel pipe. Detailed Implementation

[0036] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] Example 1: Detailed Explanation of a Structure for Improving the Lateral Load-Bearing Capacity of Foot Spikes

[0040] In tower maintenance operations in industries such as power and telecommunications, the safety of workers is always the top priority. Traditional climbing spikes, as climbing aids, have limited lateral load-bearing capacity and cannot meet the safety requirements in complex environments. Therefore, this invention proposes an innovative structure to improve the lateral load-bearing capacity of climbing spikes. This structure cleverly combines the climbing spike body 6 with a supporting structure, achieving a significant improvement in mechanical performance.

[0041] Specifically, the structure includes the following key components: ladder foot spike body 6, support ring 5, support rod 7, and support base 8. The design of the foot spike body 6 fully considers practicality and safety. Its head is a threaded section 1, which facilitates a tight connection with the installation components; the middle surface is machined with anti-slip grooves 4, which increases the stability of workers when climbing; and the tail is a hexagonal head, which facilitates installation and disassembly using tools.

[0042] The support structure is the core of the entire design. It consists of a support ring 5, a support rod 7, and a support base 8, which form a unified whole, ensuring the stability and load-bearing capacity of the structure. The holes on the support ring 5 and the support base 8 are designed with strict coaxiality requirements, with a coaxiality difference not exceeding 0.2mm. This ensures the accuracy and stability of the foot spikes during installation. After the foot spike body 6 passes through the holes on the support ring 5, hexagonal nut 2 3, and support base 8, it is installed on the tower material of the angle steel tower through hexagonal nut 2, forming a stable connection.

[0043] In terms of material selection, the foot spike body 6 uses 6.8 grade M16 bolts, a material with high strength and good toughness, which can meet the needs of foot spikes in complex environments. The support ring 5 has a thickness of 20mm, an outer diameter of 30mm, and an inner diameter of 17.0mm. This size design ensures both the strength and stability of the support ring and facilitates connection with the foot spike body and support rod. The support rod 7 has a diameter of 16mm, which is sufficient to withstand lateral loads and ensure the overall stability of the structure. The support base 8 has a thickness of 10mm at the circular hole, an outer diameter of 30mm, and an inner diameter of 17mm. This design facilitates connection with the foot spike body and ensures the stability and load-bearing capacity of the support base under stress.

[0044] This structure cleverly employs a rod-member system architecture, forming a two-force member structure. In this structure, the foot spikes are transformed from being subjected to bending loads to tensile loads, thus significantly improving their lateral load-bearing capacity. The optimized structure is not only suitable for climbing devices on angle steel towers but can also be used as fall protection attachment points for tower climbers. In special circumstances, when workers face the risk of accidental falls, the foot spikes can withstand the impact tension of the safety rope, providing reliable safety for the workers.

[0045] Example 2: Refined Design of Fall Protection Hanging Points for Foot Pole System

[0046] Based on the structure for enhancing the lateral load-bearing capacity of the foot spikes proposed in Embodiment 1, this utility model further explores and aims to enhance the safety and reliability of the foot spikes when used as fall protection attachment points. Therefore, Embodiment 2 introduces a key improvement—an anti-suspension hook 9 for the safety rope, thus forming a complete fall protection attachment point design for the foot spike rod system.

[0047] This design retains all the core components from Embodiment 1, including the ladder foot spike body 6, support ring 5, support rod 7, and support base 8. These components together form a robust and high-strength support system. The foot spike body 6 still uses 6.8 grade M16 bolts, whose superior strength and toughness provide a solid foundation for the entire structure. The dimensions and material selection of the support ring 5, support rod 7, and support base 8 have also been carefully calculated and optimized to ensure that the structure maintains its integrity and stability under extreme loads.

[0048] Building upon this, Example 2 innovatively adds a safety rope detachment hook 9. This design detail is located on both sides of the support ring 5 at its horizontal position. Its shape and size are precisely designed to effectively hook the end ring of the safety rope, preventing the ring from slipping off during operation due to vibration or external forces. The hook 9 is made of high-strength material, possessing sufficient rigidity and durability to withstand the enormous impact force generated during a fall, ensuring that the rope remains securely connected to the foot spikes.

[0049] Furthermore, the installation position of the safety rope detachment hook 9 has been carefully considered. Located on the side of the support ring 5, it does not interfere with the normal use of the foot spikes, yet can play a crucial role in critical moments. The hook's design also takes into account ease of use and convenience, allowing workers to easily attach the rope to the hook while wearing safety equipment, improving work efficiency and safety.

[0050] In summary, Example 2, by adding the anti-fall hook 9, not only further enhances the lateral load-bearing capacity of the foot spikes but also significantly improves their safety and reliability as fall protection anchors. This design enables the foot spikes to play a more important role in tower maintenance operations in industries such as power and communications, providing a more solid guarantee for the safety of workers. Whether in routine climbing or emergency fall situations, these foot spikes demonstrate excellent performance and stability, becoming a reliable safety partner for workers.

[0051] Example 3: Detailed design of T-shaped anti-fall rigid guide rail connecting foot spikes

[0052] In the complex environment of tower maintenance, the T-type fall arrestor rigid guide rail is a critical safety device, and its stability and reliability are of paramount importance. However, the traditional method of connecting the guide rail and foot spikes is cumbersome in structure and complicated in installation, affecting work efficiency and safety. To address this issue, this utility model has meticulously designed a T-type fall arrestor rigid guide rail connecting foot spike. Through innovative structural design, it aims to both improve the lateral load-bearing capacity of the foot spikes and simplify the connection between the guide rail and the foot spikes, thereby comprehensively improving the installation quality and operational safety of the guide rail.

[0053] The connecting foot spike mainly consists of the following parts: the ladder foot spike body 6, the support structure, and specially designed hexagonal nuts 3 10 and 4 11. Among them, the ladder foot spike body 6 continues the excellent design of Embodiment 1, using 6.8 grade M16 bolts to ensure strength and toughness, while the head is provided with a threaded section for easy and tight connection with the installation components; the middle surface is machined with anti-slip grooves to increase stability during climbing.

[0054] Most importantly, this invention features an innovative modification to the bolt's tail, designing it as a double-ended bolt. This design allows one end of the foot spike to be securely connected to the tower body via hexagonal nuts 1-2 and 2-3, while the other end can be easily connected to the T-shaped fall arrestor rail via hexagonal nuts 4-10 and 4-11. The double-ended bolt design not only significantly improves the foot spike's lateral load-bearing capacity, making it sufficient to withstand the weight of the rail and workers, as well as wind and other external factors, but also greatly simplifies the connection structure between the rail and the foot spike, reducing installation difficulty and cost.

[0055] The support structure, as a crucial component of the connecting spikes, has also undergone meticulous design and optimization. It not only provides stable support for the spikes but also ensures the guide rail maintains the correct position and angle after installation. The materials and dimensions of the support structure have been rigorously calculated and tested to ensure it can withstand extreme loads and maintain structural integrity and stability.

[0056] In practical applications, this T-shaped fall-proof rigid guide rail connecting foot has demonstrated superior performance. It not only enables quick and accurate installation of the guide rail but also ensures a stable connection during long-term use. Furthermore, the double-ended bolt design makes guide rail installation more flexible and convenient, allowing adjustment of the guide rail's position and angle to meet the needs of different work scenarios.

[0057] In summary, Example 3, through its innovative T-shaped fall-protection rigid guide rail connecting to the foot spikes, not only improves the lateral load-bearing capacity of the foot spikes, enabling them to be used as fall protection anchor points, but also simplifies the connection structure between the guide rail and the foot spikes, reducing installation difficulty and cost. This design provides a safer, more efficient, and convenient solution for tower maintenance operations, offering strong protection for the lives of workers.

[0058] Example 4: Innovative Design of Steel Pipe Ladder Foot Peg Structure

[0059] In the widespread application of steel pipe ladder feet, the safety and reliability of these feet are crucial components connecting the steel pipes. However, traditional welded feet suffer from defects during the welding process, such as weld cracks and porosity, which severely affect their safety performance. To address this issue, this invention proposes a novel steel pipe ladder foot structure. This design cleverly optimizes the welded component into a bolted connection, thereby completely avoiding the impact of welding defects and significantly improving the safety and reliability of the feet.

[0060] The ladder spike structure mainly consists of the following parts: the ladder spike body 6, the support structure, the arc-shaped washer 13, and the arc-shaped support base 14. Among them, the ladder spike body 6 continues the excellent design of Embodiment 1 and is made of high-strength materials to ensure that the spike will not break or deform when bearing load.

[0061] In terms of design, this utility model features a meticulously crafted contact surface between the support base and the steel pipe. The contact surface is machined into a concave arc surface that conforms to the curvature of the steel pipe's outer surface. This design allows the support base to fit snugly against the steel pipe, ensuring a stable connection between the foot nail and the steel pipe. Simultaneously, the contact surface for installing the nut is designed as a flat structure, facilitating the installation and tightening of the nut.

[0062] On the other side of the steel pipe, this invention features an arc-shaped washer 13. The surface of the washer that contacts the steel pipe is also machined into a concave arc surface that conforms to the curvature of the outer surface of the steel pipe, echoing the design of the support base and further ensuring a tight connection between the foot spike and the steel pipe. The surface of the washer that contacts the nut is also designed as a planar structure, facilitating mating with the nut and achieving a stable installation of the foot spike.

[0063] Through this innovative design, this utility model successfully optimizes the traditional welded foot nail into a bolted connection. This design not only avoids defects that may occur during the welding process, such as weld cracking and porosity, but also significantly improves the lateral load-bearing capacity of the foot nail. In practical applications, this foot nail structure performs excellently, being not only easy and reliable to install, but also capable of withstanding large lateral loads, providing reliable safety for workers. Furthermore, the bolted connection design makes the disassembly and replacement of the foot nail more convenient, reducing maintenance costs and time.

[0064] In summary, Example 4, through its innovative steel pipe ladder foot spike design, successfully optimized welded components into bolted connections, avoiding the impact of welding defects and improving the safety and reliability of the foot spikes. This design provides a safer, more efficient, and convenient solution for the application of steel pipe ladder foot spikes, offering strong protection for the lives of workers.

[0065] Example 5: Design of T-shaped guide rail connecting foot nail structure for steel pipe ladder

[0066] Based on the design concepts of Embodiments 3 and 4, this utility model further proposes a steel pipe ladder T-shaped guide rail connecting foot nail structure. This design not only avoids the influence of welding defects and improves the safety and reliability of the foot nails, but also simplifies the connection structure between the guide rail and the foot nails, improving the installation quality of the guide rail.

[0067] Specifically, the connecting foot spike structure includes a ladder foot spike body 6, a support structure, hexagonal nuts 10 and 11, an arc-shaped washer 13, and an arc-shaped support base 14. In the design, the surfaces of the support base and the steel pipe, as well as the washer and the steel pipe, are machined into concave arc surfaces that conform to the curvature of the outer surface of the steel pipe, while the surfaces that fit with the nuts are designed as flat structures. Furthermore, the ends of the foot spike are designed with threaded structures (i.e., double-ended bolts), and the web of the anti-fall T-shaped guide rail is directly threaded to the ends of the foot spikes through bolt holes.

[0068] The advantages of this design are: first, it optimizes welded components into bolted connections, avoiding potential welding defects in the foot spikes; second, it improves the lateral load-bearing capacity of the foot spikes, enabling them to be used as fall protection anchor points; and third, while ensuring safety, it simplifies the connection structure between the guide rail and the foot spikes, reducing installation difficulty and cost. In practical applications, this connecting foot spike structure performs excellently, not only being easy to install and stable and reliable, but also capable of withstanding large lateral loads and impact forces, providing more reliable safety protection for workers.

[0069] In summary, this invention first proposes a structure that significantly enhances the lateral load-bearing capacity of the foot spikes, making them more stable under lateral forces and thus realizing their multi-functionality as fall protection attachment points. Simultaneously, to prevent the end ring from accidentally slipping off the foot spike end and falling off during use, this invention cleverly adds anti-suspension hooks to both sides of the horizontal position of the support ring. This design not only effectively enhances the foot spike's ability to secure the rope, ensuring that the rope will not fall off in an emergency, but also greatly improves the safety of workers.

[0070] Secondly, the T-shaped fall arrestor rigid guide rail connecting foot spike of this utility model innovatively modifies the hexagonal head at the end of the bolt into a double-ended bolt. This design allows one end of the foot spike to be firmly connected to the tower body, while the other end can be easily connected to the T-shaped fall arrestor rigid guide rail. This improvement not only significantly enhances the lateral load-bearing capacity of the foot spike, making it sufficient to withstand the enormous impact force during a fall, but also greatly simplifies the connection structure between the T-shaped guide rail and the foot spike while ensuring safety, thus improving the installation efficiency and quality of the guide rail.

[0071] Furthermore, this invention also features unique optimizations to the foot spike structure of steel pipe ladders. Traditionally, foot spikes for steel pipe ladders are mostly connected to the steel pipe by welding, but this method often suffers from welding defects such as weld cracks and porosity, severely affecting the safety performance of the foot spikes. Therefore, this invention meticulously designs the contact surfaces between the support base and the steel pipe, as well as the contact surfaces between the gasket and the steel pipe, into concave arc surfaces that conform to the curvature of the outer surface of the steel pipe, while the contact surface for the nut installation is designed as a planar structure. This design not only ensures a tight fit between the foot spike and the steel pipe, avoiding defects that may occur during welding, but also replaces the traditional welding method with a bolt connection, thereby further improving the lateral load-bearing capacity and safety of the foot spikes.

[0072] All aspects of this utility model's design aim to improve the safety performance, load-bearing capacity, and ease of installation of the foot spikes. Through innovative methods such as adding anti-fall hooks for safety ropes, modifying double-ended bolts, and optimizing the structure of the steel pipe ladder foot spikes, this utility model successfully achieves multifunctionality and high performance for the foot spikes, providing a more reliable, safe, and convenient solution for tower maintenance operations in industries such as power and communications. These innovative designs not only enhance the practical value of the foot spikes but also provide strong protection for the lives of workers.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A structure for improving the lateral load-bearing capacity of foot spikes, characterized in that, It includes the ladder foot nail body (6) and the support structure. The support structure is sleeved on the ladder foot nail body (6) to form a two-force bar structure. One end of the ladder foot nail body (6) is a threaded section (1), and the other end is a hexagonal head or bolt head. The middle surface of the ladder foot nail body (6) is machined with anti-slip grooves (4). The support structure includes a support ring (5), a support rod (7) and a support seat (8). The side of the support ring (5) is connected to one end of the support rod (7), and the other end of the support rod (7) is connected to the support seat (8). The support seat (8) is sleeved on the ladder foot nail body (6) on one side of the threaded section (1), and the support ring (5) is sleeved on the ladder foot nail body (6) on the side away from the threaded section (1).

2. The structure for increasing the lateral load-bearing capacity of the foot spikes according to claim 1, characterized in that, Hexagonal nuts one (2) and hexagonal nuts two (3) are provided on the ladder foot nail body (6) on both sides of the support base (8). After the ladder foot nail body (6) passes through the holes on the support ring (5), hexagonal nuts two (3) and support base (8), it is installed on the tower material of the angle steel tower through hexagonal nuts one (2).

3. The structure for increasing the lateral load-bearing capacity of the foot spikes according to claim 1, characterized in that, The ladder foot spike body (6) uses 6.8 grade M16 bolts.

4. The structure for increasing the lateral load-bearing capacity of the foot spikes according to claim 1, characterized in that, The support ring (5) has symmetrical anti-safety rope detachment hooks (9) on both sides at the horizontal position.

5. A guide rail connecting foot pin, characterized in that, Includes the structure for enhancing the lateral load-bearing capacity of the climbing foot nail as described in any one of claims 1 to 4 and a T-shaped guide rail (12), the T-shaped guide rail (12) being sleeved on the other end of the climbing foot nail body (6).

6. A guide rail connecting foot pin according to claim 5, characterized in that, The ladder foot nail bodies (6) on both sides of the T-shaped guide rail (12) are provided with hexagonal nuts three (10) and hexagonal nuts four (11) for fixing.

7. A ladder foot spike, characterized in that, The structure includes the structure for increasing the lateral bearing capacity of the foot nail as described in any one of claims 1 to 4, an arc-shaped washer (13) and an arc-shaped support seat (14), wherein the arc-shaped washer (13) and the arc-shaped support seat (14) are disposed between hexagonal nut one (2) and hexagonal nut two (3), and a steel pipe (15) is disposed between the arc-shaped washer (13) and the arc-shaped support seat (14).

8. A ladder foot spike according to claim 7, characterized in that, The arc-shaped gasket (13) and the arc-shaped support (14) are arranged opposite each other, and the arc surface is in contact with the outer surface of the steel pipe (15).

Images