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

Abstract

The invention 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 crawling ladder foot nail, the structure for improving the transverse bearing capacity of the foot nail comprises a crawling ladder foot nail body and a supporting structure, the supporting structure is arranged on the crawling ladder foot nail body in a sleeving mode, and a two-force-rod structure is formed. 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. 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 invention 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] The invention belongs to the technical field of transmission tower climbing equipment, and in particular relates to a structure for improving the lateral bearing capacity of foot nails, guide rail connecting foot nails and steel pipe ladder foot nails. Background Art

[0002] Currently, power transmission towers are generally equipped with spikes, which are designed to assist operators in climbing and stepping more conveniently and safely when performing high-altitude operations such as tower maintenance, overhaul or installation of new equipment. They serve as a bridge between the tower body and the operators, ensuring that the operators can climb up and down the tower steadily and orderly, greatly improving the operating efficiency and preliminarily ensuring the safety of the operators.

[0003] However, in actual working environments, especially when facing some unexpected or emergency situations, workers often need more safety measures. In this case, people expect these tower climbing spikes to have more functions, such as being used as hanging points for fall protection. This means that workers can firmly connect the safety lanyard to the spikes. In the event of an unexpected fall, the lanyard can immediately withstand the impact, providing an additional layer of safety for workers, preventing them from falling from a height, thereby reducing the potential risk of personal injury.

[0004] Unfortunately, the existing foot nail structure is relatively simple, and most of them adopt the design of cantilever beam. When this structure is bent by lateral load, its load-bearing capacity is relatively limited and it is difficult to withstand large impacts. In order to verify this, relevant institutions conducted a series of rigorous tests. In the test of 100kg impact load, the foot nails generally showed significant bending deformation, and some foot nails even broke directly at the root of the thread. This result clearly shows that the structural strength of the existing foot nails is obviously insufficient when facing large impacts, and it cannot provide sufficient safety protection for operators.

[0005] Furthermore, during the 22kN static load test of the hanging point, the foot nails also showed obvious deformation. These test results all point out that ordinary foot nails have obvious limitations in design and materials, and cannot withstand the fall impact load that operators may encounter. Therefore, they cannot be used as reliable fall protection hanging points, which undoubtedly poses a great challenge to the safety and reliability of transmission tower operations.

[0006] In view of this situation, in order to effectively improve the safety and reliability of transmission tower operations, it is urgent to develop a new type of foot spike. This type of foot spike not only needs to meet the basic needs of operators for daily climbing and stepping, but also needs to be comprehensively optimized and upgraded in terms of structure and materials. By adopting a more scientific and reasonable structural design and higher-strength materials, the new foot spike can withstand greater impact loads, thereby truly playing an important role as a fall protection hanging point. In this way, whether in normal operations or in emergency situations, operators can get more comprehensive, effective and reliable safety guarantees, thereby ensuring the safe and smooth operation of transmission towers. Summary of the invention

[0007] The purpose of the present invention is to provide a structure for improving the lateral bearing capacity of foot nails, guide rail connecting foot nails and ladder foot nails, so as to solve the problem that the existing foot nails cannot withstand the impact load of the falling of operators.

[0008] To achieve the above object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a structure for improving the lateral bearing capacity of a ladder spike, comprising a ladder spike body and a support structure, wherein the support structure is sleeved on the ladder spike body to form a triangular two-force rod structure with stable support.

[0009] Furthermore, one end of the ladder foot nail body is a threaded section, and the other end is a hexagonal head or a bolt head, and the middle surface of the ladder foot nail body is processed with an anti-slip groove.

[0010] Furthermore, the supporting structure includes a supporting ring, a supporting rod and a supporting seat, the side of the supporting ring is connected to one end of the supporting rod, the other end of the supporting rod is connected to the supporting seat, the supporting seat is sleeved on the ladder foot nail body on one side of the threaded section, and the supporting ring is sleeved on the ladder foot nail body away from the side of the threaded section.

[0011] Furthermore, hexagonal nut 1 and hexagonal nut 2 are provided on the ladder foot nail body on both sides of the support seat. After the ladder foot nail body passes through the support ring, hexagonal nut 2 and the holes on the support seat, it is installed on the tower material of the angle steel tower through hexagonal nut 1.

[0012] Furthermore, the ladder foot nail body adopts 6.8 grade M16 bolts.

[0013] Furthermore, symmetrical hooks are provided on both side surfaces of the support ring at the horizontal position to prevent the safety lanyard from falling off.

[0014] In a second aspect, the present invention provides a guide rail connecting foot spikes, comprising the structure for improving the lateral bearing capacity of the foot spikes and a T-shaped guide rail, wherein the T-shaped guide rail is sleeved on the other end of the ladder foot spike body.

[0015] Furthermore, hexagonal nuts three and four for fixing are arranged on the ladder foot nail bodies on both sides of the T-shaped guide rail.

[0016] In a third aspect, the present invention provides a ladder foot spike, comprising the structure for improving the lateral bearing capacity of the foot spike, an arc-shaped gasket and an arc-shaped support seat, wherein the arc-shaped gasket and the arc-shaped support seat are arranged between hexagonal nut one and hexagonal nut two, and a steel pipe is arranged between the arc-shaped gasket and the arc-shaped support seat.

[0017] Furthermore, the arc-shaped surfaces of the arc-shaped gasket and the arc-shaped support seat are arranged relative to each other, and the arc-shaped surfaces are in contact with the outer surface of the steel pipe.

[0018] Compared with the prior art, the present invention has the following technical effects: The present invention introduces a highly innovative and practical structure for improving the lateral load-bearing capacity of the foot spikes, achieving unprecedented significant improvements and breakthroughs in the design and function of the foot spikes. In view of the structural limitations of traditional foot spikes, namely the limited bearing capacity of bending loads caused by a simple cantilever beam design, the present invention ingeniously designs a support structure that closely cooperates with the foot spikes and works together. This innovative design not only breaks the structural constraints of traditional foot spikes, but also optimizes them into a more stable two-force rod structure.

[0019] In this new structure, the foot spikes no longer bear bending loads alone, but through the clever layout of the supporting structure, the bending loads originally acting on the foot spikes are cleverly converted into tensile loads. This transformation greatly improves the lateral load-bearing capacity of the foot spikes, enabling them to demonstrate greater stability and safety in the face of complex and changing working environments.

[0020] The optimized M16 spikes fully meet the strict requirements of GB 30862-2014 Fall Protection Hanging Point Devices. This means that during tower climbing operations, operators can securely hang safety lanyards on these optimized spikes, thus providing more reliable safety protection when facing the risk of accidental falls.

[0021] In summary, the structure for improving the lateral bearing capacity of the foot nails provided by the present invention has not only achieved a major breakthrough in design concept, but also demonstrated excellent performance in practical applications. By cleverly designing a supporting structure device that works with the foot nails, the present invention successfully optimizes the structure of the simple cantilever beam of the ordinary foot nails that is subjected to bending loads into a two-force rod structure system with triangular stable support. In this new structural system, the force bearing mode of the foot nails has undergone a fundamental change, from being subjected to bending loads to being subjected to tensile loads, thereby greatly improving its lateral bearing capacity. After rigorous calculations and test verifications, the M16 foot nails have fully met the load requirements specified in the national standards, providing a more powerful guarantee for the safety of tower climbing workers.

[0022] In order to prevent the end hanging ring from sliding off from the end of the foot nail, the invention adds anti-falling hooks for the safety hanging rope on both sides of the horizontal position of the support ring to prevent the safety hanging rope from falling off. This design not only improves the lateral load-bearing capacity of the foot nail, but also achieves the function of being used as a fall protection hanging point.

[0023] The T-shaped anti-fall rigid guide rail connection foot nail of the present invention is made by converting the hexagonal head at the tail of the bolt into a stud bolt, one end of which is connected to the tower body and the other end is connected to the T-shaped anti-fall rigid guide rail. On the one hand, this design improves the lateral bearing capacity of the foot nail, so that it can be used as a fall protection hanging point; on the other hand, under the premise of ensuring safety, it simplifies and optimizes the connection structure between the existing T-shaped guide rail and the iron tower, and improves the installation quality of the guide rail.

[0024] The steel pipe ladder foot nail structure of the present invention is designed by processing the supporting seat and the steel pipe fitting surface into a concave arc surface that adapts to the curvature of the outer surface of the steel pipe, and the fitting surface with the nut installation is designed to be a flat structure; an arc-shaped gasket is designed on the other side of the steel pipe, and the gasket and the steel pipe fitting surface are processed and designed to be a concave arc surface that adapts to the curvature of the outer surface of the steel pipe, and the fitting surface with the nut installation is designed to be a flat structure. In this way, the steel pipe ladder foot nail is optimized from a conventional welded part to a bolted connection part. On the one hand, this design optimizes the welded part into a bolted connection part, avoiding the welding defects that may exist in the welded foot nail; on the other hand, it improves the lateral bearing capacity of the foot nail, so that it can be used as a fall protection hanging point. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a front view of a structure for improving the lateral bearing capacity of a foot nail according to the present invention; Figure 2 A top view of a structure for improving the lateral bearing capacity of a foot nail according to the present invention; Figure 3 This is a left view of a structure for improving the lateral bearing capacity of a foot nail according to the present invention; Figure 4 It is a right view of a safety rope falling-off prevention structure of a structure for improving the lateral bearing capacity of a foot nail according to the present invention; Figure 5 A top view of a safety rope fall-off prevention structure for improving the lateral bearing capacity of a foot nail according to the present invention; Figure 6 A top view of a T-shaped guide rail connecting a foot nail rod system structure of a structure for improving the lateral bearing capacity of a foot nail of the present invention installed on the T-shaped guide rail; Figure 7 A top view of a steel pipe ladder foot nail rod system structure of the present invention, which is a structure for improving the lateral bearing capacity of the foot nails, installed on a steel pipe; Figure 8It is a top view of a steel pipe ladder T-shaped guide rail connecting the foot nail rod system structure installed on a steel pipe in a structure for improving the lateral bearing capacity of the foot nails of the present invention.

[0026] In the figure: 1. threaded section; 2. hexagonal nut one; 3. hexagonal nut two; 4. anti-slip groove; 5. support ring; 6. ladder foot nail body; 7. support rod; 8. support seat; 9. hook to prevent safety rope from falling off; 10. hexagonal nut three; 11. hexagonal nut four; 12. T-type guide rail; 13. arc-shaped gasket; 14. arc-shaped support seat; 15. steel pipe. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example 1: Detailed explanation of a structure for improving the lateral bearing capacity of foot nails In tower maintenance operations in industries such as electricity and communications, the safety of operators always comes first. As a climbing auxiliary tool, traditional foot spikes have limited lateral bearing capacity and are difficult to meet safety requirements in complex environments. To this end, the present invention proposes an innovative structure for improving the lateral bearing capacity of the foot spikes. The structure cleverly combines the ladder foot spike body 6 with the support structure to achieve a significant improvement in mechanical properties.

[0031] Specifically, the structure includes the following key parts: ladder spike body 6, support ring 5, support rod 7 and support seat 8. The design of the spike body 6 fully considers practicality and safety. Its head is a threaded section 1, which is convenient for close connection with the installation component; the middle surface is processed with an anti-slip groove 4 to increase the stability of the operator when climbing; the tail is a hexagonal head, which is convenient for installation and removal using tools.

[0032] The support structure is the core of the entire design. It consists of a support ring 5, a support rod 7 and a support seat 8. The three form a whole, ensuring the stability and load-bearing capacity of the structure. The holes on the support ring 5 and the support seat 8 are designed with strict coaxiality requirements, and the coaxiality difference does not exceed 0.2mm, which ensures the accuracy and stability of the foot nails during installation. After the foot nail body 6 passes through the holes on the support ring 5, the hexagonal nut 23 and the support seat 8, it is installed on the tower material of the angle steel tower through the hexagonal nut 12, forming a stable connection.

[0033] In terms of material selection, the foot nail body 6 uses a 6.8-grade M16 bolt. This material has high strength and good toughness, and can meet the use requirements of the foot nail in complex environments. The thickness of the support ring 5 is 20mm, the outer diameter is 30mm, and the inner diameter is 17.0mm. This size design not only ensures the strength and stability of the support ring, but also facilitates the connection with the foot nail body and the support rod. The diameter of the support rod 7 is 16mm, which is sufficient to withstand lateral loads and ensure the overall stability of the structure. The thickness of the circular hole of the support seat 8 is 10mm, the outer diameter of the circular hole is 30mm, and the inner diameter is 17mm. This design is not only convenient for connection with the foot nail body, but also can ensure the stability and bearing capacity of the support seat when under force.

[0034] The structure cleverly adopts the rod system structure to form a two-force rod structure. In this structure, the foot nails are transformed from being subjected to bending loads to tensile loads, which significantly improves the lateral bearing capacity of the foot nails. The optimized structure is not only suitable for the climbing device of the angle steel tower, but can also be used as a fall protection hanging point for tower climbing workers. In special circumstances, when the operator faces the risk of accidental fall, the foot nails can withstand the impact tension of the safety lanyard, providing reliable safety protection for the operator.

[0035] Example 2: Refined design of the fall protection hanging point of the foot nail rod system structure Based on the structure of improving the lateral bearing capacity of the foot nail proposed in Example 1, the present invention further explores to enhance the safety and reliability of the foot nail when used as a fall protection hanging point. Therefore, Example 2 introduces a key improvement - a hook 9 to prevent the safety lanyard from falling off, thereby forming a complete set of foot nail rod system structure fall protection hanging point design.

[0036] The design first retains all the core components of Example 1, including the ladder spike body 6, support ring 5, support rod 7 and support seat 8, which together form a stable and high-strength support system. The spike body 6 still uses 6.8-grade M16 bolts, which provide a solid foundation for the entire structure with their excellent strength and toughness. The size and material selection of the support ring 5, support rod 7 and support seat 8 are also carefully calculated and optimized to ensure that the integrity and stability of the structure can be maintained when subjected to extreme loads.

[0037] On this basis, Example 2 innovatively adds a hook 9 to prevent the safety lanyard from falling off. This design detail is located on both sides of the horizontal position of the support ring 5, and its shape and size are precisely designed so that it can effectively hang the end ring of the safety lanyard to prevent the ring from sliding out and falling off due to vibration or external force during operation. The hook 9 is made of high-strength material and has sufficient rigidity and durability to withstand the huge impact force generated when falling, ensuring that the lanyard is always firmly connected to the foot nail.

[0038] In addition, the installation position of the hook 9 to prevent the safety lanyard from falling off has also been carefully considered. It is located on the side of the support ring 5, which does not affect the normal use of the foot spikes, but can play a key role at a critical moment. The design of the hook also takes into account ease of use and convenience, so that the operator can easily hang the lanyard on the hook when wearing safety equipment, thereby improving work efficiency and safety.

[0039] In summary, by adding the hook 9 to prevent the safety lanyard from falling off, Example 2 not only further improves the lateral load-bearing capacity of the foot spike, but also significantly enhances its safety and reliability as a fall protection hanging point. This design enables the foot spike to play a more important role in tower maintenance operations in industries such as electricity and communications, and provides a more solid guarantee for the life safety of operators. Whether in daily climbing or emergency falling situations, the foot spike can demonstrate excellent performance and stability, becoming a trustworthy safety partner for operators.

[0040] Example 3: Detailed design of T-shaped anti-fall rigid rail connection spikes In the complex environment of tower maintenance, the T-shaped anti-fall rigid guide rail is a key safety device, and its stability and reliability are of vital importance. However, the traditional guide rail and foot nail connection method affects the work efficiency and safety due to its cumbersome structure and complex installation. In view of this problem, the present invention carefully designs a T-shaped anti-fall rigid guide rail connecting foot nails, aiming to improve the lateral load-bearing capacity of the foot nails and simplify the connection between the guide rail and the foot nails through innovative structural design, thereby comprehensively improving the installation quality of the guide rail and the safety of operation.

[0041] The connecting foot nail is mainly composed of the following parts: a ladder foot nail body 6, a supporting structure, a specially designed hexagonal nut three 10 and a hexagonal nut four 11. The ladder foot nail body 6 continues the high-quality design in Example 1, using a 6.8-grade M16 bolt to ensure strength and toughness, and a threaded section is provided on the head to facilitate tight connection with the installation component; the middle surface is processed with an anti-slip groove to increase stability during climbing.

[0042] The most critical thing is that the present invention has innovatively modified the bolt tail and designed it as a stud bolt. This design allows one end of the foot nail to be firmly connected to the tower body through hexagonal nut 1 2 and hexagonal nut 2 3, while the other end is conveniently connected to the T-shaped anti-fall rigid guide rail through hexagonal nut 4 10 and hexagonal nut 4 11. The design of the stud bolt not only significantly improves the lateral bearing capacity of the foot nail, making it sufficient to withstand the weight of the guide rail and the operator, as well as the interference of wind and other external factors, but also greatly simplifies the connection structure between the guide rail and the foot nail, reducing the difficulty and cost of installation.

[0043] As an important part of the foot spike connection, the support structure has also been carefully designed and optimized. It not only provides stable support for the foot spikes, but also ensures that the rails maintain the correct position and angle after installation. The material and size selection of the support structure have been strictly calculated and tested to ensure that it can withstand extreme loads and maintain the integrity and stability of the structure.

[0044] In actual application, the T-shaped anti-fall rigid guide rail connecting foot nails have demonstrated excellent performance. It can not only quickly and accurately complete the installation of the guide rail, but also ensure that the guide rail remains in a stable connection state during long-term use. At the same time, the design of the stud bolts also makes the installation of the guide rail more flexible and convenient, and the position and angle of the guide rail can be adjusted according to actual needs to meet the needs of different work scenarios. In summary, Example 3 uses an innovative T-shaped anti-fall rigid guide rail connecting foot nail design, which not only improves the lateral bearing capacity of the foot nails, allowing it to be used as a fall protection hanging point, but also simplifies the connection structure between the guide rail and the foot nails, reducing the difficulty and cost of installation. This design provides a safer, more efficient and convenient solution for tower maintenance operations, and provides a strong guarantee for the life safety of operators.

[0045] Example 4: Innovative design of the foot nail structure of the steel tube ladder In the wide application of steel pipe ladder spikes, as a key component for connecting steel pipes, the safety and reliability of ladder spikes are of vital importance. However, the safety performance of traditional welded spikes is seriously affected by defects that may occur during the welding process, such as weld cracking, pores, etc. In order to solve this problem, the present invention proposes a new steel pipe ladder spike structure. The design cleverly optimizes the welded parts into bolted connectors, thereby completely avoiding the influence of welding defects and significantly improving the safety and reliability of the spikes.

[0046] The foot spike structure mainly consists of the following parts: a ladder foot spike body 6, a supporting structure, an arc-shaped gasket 13 and an arc-shaped supporting seat 14. The ladder foot spike body 6 continues the high-quality design in Example 1 and is made of high-strength material to ensure that the foot spike will not break or deform when bearing load.

[0047] In terms of design, the present invention has carefully processed and designed the fitting surface between the support seat and the steel pipe. The fitting surface between the support seat and the steel pipe is processed into a concave arc surface that is adapted to the curvature of the outer surface of the steel pipe. This design enables the support seat to fit tightly on the steel pipe, ensuring a stable connection between the foot nail and the steel pipe. At the same time, the fitting surface for nut installation is designed to be a flat structure, which is convenient for the installation and tightening of the nut.

[0048] On the other side of the steel pipe, the present invention designs an arc-shaped gasket 13. The gasket and the steel pipe fitting surface are also processed into a concave arc surface adapted to the curvature of the outer surface of the steel pipe, which echoes the design of the support seat and further ensures the tight connection between the foot nail and the steel pipe. The gasket and the nut installation fitting surface are also designed as a flat structure, which is convenient for cooperation with the nut to achieve a stable installation of the foot nail.

[0049] Through this innovative design, the present invention successfully optimizes the traditional welding foot nail into a bolt connection. This design not only avoids defects that may occur during welding, such as weld cracking, pores, etc., but also significantly improves the lateral load-bearing capacity of the foot nail. In practical applications, the foot nail structure performs well. It is not only easy to install, stable and reliable, but also able to withstand large lateral loads, providing reliable safety protection for operators. In addition, the bolt connection design also makes it easier to disassemble and replace the foot nail, reducing maintenance costs and time.

[0050] In summary, Example 4 successfully optimizes the welded parts into bolted connectors through the innovative steel tube ladder foot nail structure design, avoids the influence of welding defects, and improves the safety and reliability of the foot nails. This design provides a safer, more efficient and convenient solution for the application of steel tube ladder foot nails, and provides a strong guarantee for the life safety of operators.

[0051] Example 5: Design of the T-rail connecting nail structure of steel tube ladder Combining the design concepts of Example 3 and Example 4, the present invention further proposes a steel tube 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; it also simplifies the connection structure between the guide rail and the foot nails and improves the installation quality of the guide rail.

[0052] Specifically, the connecting foot nail structure includes a ladder foot nail body 6, a supporting structure, a hexagonal nut 3 10, a hexagonal nut 4 11, an arc-shaped gasket 13 and an arc-shaped support seat 14. In terms of design, we also process and design the supporting seat and the steel pipe fitting surface and the gasket and the steel pipe fitting surface into a concave arc surface that adapts to the curvature of the outer surface of the steel pipe, and design the fitting surface with the nut installation into a flat structure. At the same time, the two ends of the foot nail are designed to be a threaded structure (i.e., stud bolts are used), and the web of the anti-fall T-shaped guide rail is directly threadedly connected to the end of the foot nail through the bolt hole.

[0053] The advantages of this design are: first, the welded parts are optimized into bolted connections, avoiding the welding defects that may exist in welded foot nails; second, the lateral load-bearing capacity of the foot nails is improved, so that they can be used as fall protection hanging points; third, under the premise of ensuring safety, the connection structure between the guide rail and the foot nails is simplified, reducing the difficulty and cost of installation. In actual applications, this connecting foot nail structure performs well. It is not only easy to install, stable and reliable, but also can withstand large lateral loads and impact forces, providing more reliable safety protection for operators.

[0054] In summary, the present invention first proposes a structure that significantly improves the lateral bearing capacity of the foot nail, so that the foot nail is more stable when subjected to lateral force, thereby realizing its multifunctionality as a fall protection hanging point. At the same time, in order to prevent the end hanging ring from accidentally sliding out of the end of the foot nail and falling off during use, the present invention cleverly adds hooks to prevent the safety lanyard from falling off on both sides of the horizontal position of the support ring. This design not only effectively enhances the foot nail's ability to fix the lanyard, but also ensures that the lanyard will not fall off in an emergency, thereby greatly improving the safety of the operator.

[0055] Secondly, the T-shaped anti-fall rigid guide rail connection foot nails described in the present invention are innovatively designed to convert the hexagonal head at the tail of the bolt into a stud bolt. This design allows one end of the foot nail to be firmly connected to the tower body, while the other end can be conveniently connected to the T-shaped anti-fall rigid guide rail. This improvement not only significantly improves the lateral bearing capacity of the foot nail, making it sufficient to withstand the huge impact force during a fall, but also greatly simplifies the connection structure between the T-shaped guide rail and the foot nail while ensuring safety, thereby improving the installation efficiency and quality of the guide rail.

[0056] Furthermore, the present invention has also made unique optimizations to the foot nail structure of the steel pipe ladder. Traditionally, the foot nails of steel pipe ladders are mostly connected to the steel pipes by welding, but this method often has welding defects, such as weld cracking, pores, etc., which seriously affect the safety performance of the foot nails. To this end, the present invention carefully processes and designs the fitting surface between the support seat and the steel pipe and the fitting surface between the gasket and the steel pipe into concave arc surfaces that are adapted to the curvature of the outer surface of the steel pipe, while the fitting surface for nut installation is designed to be a flat structure. Such a design not only allows the foot nail to fit tightly with the steel pipe, avoiding defects that may occur during the welding process, but also replaces the traditional welding method with bolt connection, thereby further improving the lateral load-bearing capacity and safety of the foot nail.

[0057] The various designs of the present invention are aimed at improving the safety performance, load-bearing capacity and installation convenience of the foot spikes. By adding hooks to prevent the safety lanyard from falling off, modifying stud bolts and optimizing the structure of the steel tube ladder foot spikes, the present invention successfully achieves the versatility and high performance of the foot spikes, providing a more reliable, safe and convenient solution for tower maintenance operations in the power, communication and other industries. These innovative designs not only improve the practical value of the foot spikes, but also provide a strong guarantee for the life safety of the operators.

[0058] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A structure for improving the lateral bearing capacity of the foot nails, characterized in that: It comprises a ladder foot nail body (6) and a support structure, wherein the support structure is sleeved on the ladder foot nail body (6) to form a two-force rod structure.

2. The structure for improving the lateral bearing capacity of the foot nails according to claim 1, characterized in that: One end of the ladder foot nail body (6) is a threaded section (1), and the other end is a hexagonal head or a bolt head. The middle surface of the ladder foot nail body (6) is processed with an anti-slip groove (4).

3. The structure for improving the lateral bearing capacity of the foot nails according to claim 2, characterized in that: The support structure comprises a support ring (5), a support rod (7) and a support seat (8); the side surface of the support ring (5) is connected to one end of the support rod (7); the other end of the support rod (7) is connected to the support seat (8); the support seat (8) is sleeved on a ladder foot nail body (6) on one side of the threaded section (1); and the support ring (5) is sleeved on a ladder foot nail body (6) on a side away from the threaded section (1).

4. The structure for improving the lateral bearing capacity of the foot nails according to claim 3, characterized in that: A hexagonal nut 1 (2) and a hexagonal nut 2 (3) are provided on the ladder foot nail body (6) on both sides of the support seat (8). After the ladder foot nail body (6) passes through the holes on the support ring (5), the hexagonal nut 2 (3) and the support seat (8), it is installed on the tower material of the angle steel tower through the hexagonal nut 1 (2).

5. The structure for improving the lateral bearing capacity of the foot nails according to claim 1, characterized in that: The ladder foot nail body (6) uses 6.8-grade M16 bolts.

6. The structure for improving the lateral bearing capacity of the foot nails according to claim 3, characterized in that: Symmetrical hooks (9) for preventing the safety rope from falling off are arranged on two side surfaces at a horizontal position of the support ring (5).

7. A guide rail connecting foot nail, characterized in that: It comprises a structure for improving the lateral bearing capacity of a ladder foot nail as claimed in any one of claims 1 to 6 and a T-shaped guide rail (12), wherein the T-shaped guide rail (12) is sleeved on the other end of the ladder foot nail body (6).

8. The guide rail connecting foot spike according to claim 7, characterized in that: A hexagonal nut three (10) and a hexagonal nut four (11) for fixing are arranged on the ladder foot nail body (6) on both sides of the T-shaped guide rail (12).

9. A steel tube ladder foot spike, characterized in that: It comprises a structure for raising the lateral bearing capacity of a foot nail as claimed in any one of claims 1 to 6, an arc-shaped gasket (13) and an arc-shaped support seat (14), wherein the arc-shaped gasket (13) and the arc-shaped support seat (14) are arranged between a hexagonal nut one (2) and a hexagonal nut two (3), and a steel pipe (15) is arranged between the arc-shaped gasket (13) and the arc-shaped support seat (14).

10. A steel tube ladder foot spike according to claim 9, characterized in that: The arc-shaped gasket (13) and the arc-shaped support seat (14) have arc-shaped surfaces arranged opposite to each other, and the arc-shaped surfaces are in contact with the outer surface of the steel pipe (15).

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