Intelligent safety device for high-altitude work

Abstract

The application discloses a kind of high-altitude operation intelligent safety device, referred to as "high intelligence safety", including intelligent force ring, first connecting component and second connecting component.Intelligent force ring is closed loop force structure with preset rated breaking load;First connecting component is used to connect the safety rope lower hook at the D-ring of the safety rope lower end of the lanyard component;Second connecting component is used to connect the dependent object;When the tension of both ends reaches or exceeds the rated breaking load, the intelligent force ring breaks, and the tension connection of both ends is released.The application does not rely on electronic sensors, batteries or control systems, and can actively cut off the dangerous load path between the worker and the dependent structure when the dependent object falls accidentally, reducing the risk of the worker being dragged away from the preset position (falling) or bearing excessive impact.It can be used with safety harness, safety rope, shackle, D-ring and other equipment, and is suitable for high-altitude operation scenarios such as power, communication, construction, aerospace, aircraft maintenance, human or robot operation, etc.

Description

Technical Field

[0001] This invention belongs to the field of fall protection technology, specifically relating to an intelligent safety device for working at heights, and more particularly to an intelligent safety device for working at heights that can automatically cut off the load path when the object to which it is attached falls accidentally. Background Technology

[0002] Working at heights is widely used in fields such as power, communications, construction, aerospace, and equipment installation and maintenance. Workers typically rely on safety belts, safety ropes, and fall arrestors to prevent falls. Most existing fall protection systems revolve around the basic protection path of "worker-anchor point," with the core idea being to limit the fall distance through high-strength connections, locking mechanisms, or cushioning devices, thereby reducing the risk of injury.

[0003] However, in some high-altitude work scenarios, workers are not only connected to fixed anchor points, but also to attachments such as work platforms, insulator strings, tools, and temporary support structures. When these attachments accidentally fall due to connection failure, component breakage, misoperation, or external impact, the falling object will transmit an instantaneous impact load to the worker through the connecting device. At this time, although traditional safety belts and safety ropes can withstand a certain amount of tension, they cannot actively cut off the dangerous load path caused by the falling attachment structure. The worker may still be dragged away from the preset position (fall) or subjected to impact loads exceeding the human body's safe tolerance range.

[0004] In existing technologies, some fall arrest devices with sensing, control, or intelligent monitoring functions have emerged. For example, some solutions monitor the fall status through acceleration sensors, tilt sensors, pressure sensors, or electronic control units, and trigger mechanical locking, braking, or alarm functions. While these devices improve monitoring and response capabilities to some extent, they still have several limitations: First, electronic sensing devices rely on batteries, circuits, and control programs, and their reliability may be affected under conditions such as low temperature, high temperature, humidity, strong electromagnetic fields, and long-term static placement at high altitudes; second, intelligent fall arrest devices are usually complex in structure, expensive, and difficult to maintain and verify, making large-scale deployment difficult; third, most existing intelligent fall arrest solutions still focus on "preventing personnel from falling" or "monitoring personnel falls," and have not specifically developed an effective structural solution for "how to actively disconnect the dangerous connection between the worker and the object of attachment after it fails."

[0005] Furthermore, traditional safety belts, ropes, and shackles are typically designed to ensure sufficient connection strength to prevent breakage during a fall. While this high-strength design is necessary in scenarios involving a person falling directly, it can actually cause the impact energy of a falling structure to be directly transferred to the worker in scenarios involving falls from an attached structure. This can lead to safety belt overload, webbing damage, impact injuries, and even the risk of a secondary fall. Therefore, existing fall protection systems still have blind spots in the specific connection path from the person to the attached structure.

[0006] In summary, existing safety technologies for working at heights suffer from three main shortcomings: first, the industry lacks dedicated protective devices for accidental falls from attached structures; second, traditional high-strength connectors cannot actively disconnect the connection path when a dangerous load occurs; and third, electronic intelligent fall arresters still have limitations in reliability, cost, and maintainability under complex working conditions. Therefore, it is necessary to develop a safety device that is simple in structure, reliably triggered, requires no external power source, and can automatically disconnect the worker from the attached structure when it falls.

[0007] It should be noted that the analysis of the above technical information is the result of creative labor. The detailed description of it in the background section is only intended to deepen the understanding of the non-obviousness of the overall background of this application by those skilled in the art, and should not be regarded as an admission or in any form an implication that the above technical information constitutes prior art known to those skilled in the art. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides an intelligent safety device for working at heights, which solves the problem that when objects fall accidentally during work at heights, they can easily drag workers or transmit excessive impact loads to them, and that existing fall protection systems lack specificity.

[0009] The technical challenges of protection are addressed while simultaneously achieving the effects of simple structure, reliable triggering, maintenance-free operation, and strong environmental adaptability.

[0010] The technical solution of this invention is as follows:

[0011] On one hand, this invention provides an intelligent safety device for working at heights, including an intelligent load-bearing ring, a first connecting component, and a second connecting component. The intelligent load-bearing ring is a closed-loop load-bearing structure with a preset rated breaking load; the first connecting component is disposed on one side of the intelligent load-bearing ring and is used to connect the safety rope hook at the D-ring of the safety rope's lower end; the second connecting component is disposed on the other side of the intelligent load-bearing ring and is used to connect to an object; when the tension between the first connecting component and the second connecting component reaches or exceeds the rated breaking load, the intelligent load-bearing ring breaks, releasing the load-bearing connection between the first connecting component and the second connecting component.

[0012] The basic working principle of this technical solution is as follows: Under normal operating conditions, the intelligent load-bearing ring remains intact, and a reliable connection is formed between the worker and the attached object through this device, which can meet the needs of positioning, auxiliary fixation, and follow-up restraint. When the attached object accidentally falls and generates a downward impact force, if the force exceeds the preset rated breaking load, the intelligent load-bearing ring will break first, severing the load-bearing connection between the worker and the falling attached structure. At this time, the worker is no longer continuously dragged by the falling structure, and their safety protection is mainly provided by an independent safety rope system, thereby reducing the risk of being dragged down or subjected to excessive impact.

[0013] The design rationale for adopting a ring-shaped tensile failure mode is as follows: The failure load of the ring is denoted as P. For the same material, different failure modes correspond to different cross-sectional area requirements. To accurately determine the value of P, the cross-sectional area K is the control value for P. This invention optimizes the use of a ring-shaped tensile failure mode, achieving precise control of the breaking force through a larger annular cross-sectional area, resulting in less dispersion of the fracture load and higher batch consistency.

[0014] The beneficial effects of this technical solution are mainly reflected in the following aspects:

[0015] First, it fills the gap in existing fall protection systems regarding "fall protection from attached objects." This device is specifically installed between the worker and the attached object, and can actively disconnect the dangerous connection when the attached object fails, preventing the falling structure from dragging the worker along.

[0016] Second, it adopts a purely mechanical fracture triggering method, which does not rely on electronic sensors, batteries, control programs or external energy sources. It has a simple structure, high reliability, and is suitable for complex working conditions such as power, construction, aerospace, outdoor high altitude, and strong electromagnetic interference.

[0017] Third, the intelligent load-bearing ring can precisely control the rated breaking load through material selection, cross-sectional shape and size parameters, so that the device can maintain connection reliability under normal operating conditions, and disconnect in time when dangerous loads occur, thus taking into account both safety and usability.

[0018] Fourth, this device can be used in conjunction with existing standard fall protection equipment such as safety belts, safety ropes, D-rings, and shackles, without requiring significant modifications to existing protection systems, and has good compatibility and promotional value.

[0019] Furthermore, the intelligent load-bearing ring adopts an integrated ring structure with a rectangular cross-section. The rectangular cross-section structure is conducive to forming a more defined stress distribution under tensile loads, and it is easy to control the fracture load by using parameters such as cross-section height, width, and fillet radius. Compared with complex irregular cross-sections, the rectangular cross-section is easier to process and has relatively stable dimensional control, which is beneficial to improving the consistency of the fracture threshold in mass production.

[0020] Furthermore, the intelligent load-bearing ring is made of aluminum alloy. Aluminum alloy has the characteristics of low density, good machinability, moderate strength, and relatively stable fracture behavior. By selecting appropriate aluminum alloy grades and heat treatment states, the intelligent load-bearing ring can be made to undergo a more defined fracture failure after reaching the design load, rather than continuous plastic deformation or sudden brittle fracture, which is beneficial to improving triggering reliability.

[0021] Furthermore, both the first and second connecting components include stainless steel shackles, which are inserted into the inner hole of the intelligent load-bearing ring to form a tension-bearing structure for the intelligent load-bearing ring. Using stainless steel shackles as connecting components facilitates easy assembly and disassembly, ensures reliable connection, and can adapt to the frequent loading and unloading requirements in high-altitude operations. It also allows the intelligent load-bearing ring to maintain a more natural force direction when under stress, reducing the impact of eccentric loading, torsion, and local bending on the determination of fracture load.

[0022] Furthermore, the rated breaking load of the intelligent load-bearing ring is set to 1000N to 1100N. This load range can maintain the connection without breaking under normal attachment, positioning, and small-amplitude swing conditions, while promptly disconnecting when the attached structure falls and generates significant impact force, preventing excessive impact on workers. Of course, other numerical ranges of the rated breaking load can be selected according to different working scenarios and personal protection requirements.

[0023] Furthermore, the outer diameter of the intelligent load-bearing ring is set to 38mm to 39mm, the inner diameter to 23mm to 25mm, the axial thickness to 9mm to 10mm, the unspecified fillet radius to R0.5mm to R1mm, and the accuracy grade to IT8. This dimensional range allows for good assembly compatibility with standard shackles, connecting ropes, and seat belt D-rings, while ensuring the intelligent load-bearing ring has a stable load-bearing cross-section and repeatable fracture performance. By controlling the inner diameter, outer diameter, thickness, and fillet radius, stress concentration deviations can be reduced, and the controllability of the fracture load can be improved.

[0024] Furthermore, the intelligent load-bearing ring is made of 3003 series aluminum-manganese alloy in a semi-hard state, with a tensile strength of not less than 160 MPa. 3003 series aluminum-manganese alloy has good formability and moderate strength, making it suitable for manufacturing load-bearing rings with stable fracture threshold requirements. The semi-hard state treatment allows the material strength to remain within a relatively stable range, which is beneficial for the consistency of fracture load during mass production.

[0025] Furthermore, the stainless steel shackles are M5 size 304 stainless steel shackles, with a single shackle having a load-bearing capacity of no less than 160kg and a safety factor of no less than 4. The M5 size shackles are of moderate size, facilitating their use with connecting ropes, D-rings, and intelligent load-bearing rings. 304 stainless steel has good rust and corrosion resistance, making it suitable for outdoor high-altitude work environments. The high load-bearing capacity and safety factor ensure that the connecting components themselves are not prone to failure under normal use and short-term impact conditions.

[0026] Furthermore, the intelligent safety device for working at heights also includes a safety rope. The lower end of the safety rope is connected to the D-ring of the harness assembly, and the first connecting component and the lower hook of the safety rope are connected at the D-ring of the harness assembly. The safety rope diameter is set at 14mm, and the minimum breaking force is not less than 1600kg. These safety rope parameters meet the load-bearing requirements of conventional working at heights and are compatible with existing safety belt systems. Even when the intelligent load-bearing ring breaks, the safety rope can still continue to provide suspension protection for the worker, fully guaranteeing fall protection capabilities.

[0027] Furthermore, the aforementioned intelligent safety device for working at heights is applicable to scenarios such as power transmission and distribution line tower work, communication, construction work at heights, spacecraft extravehicular activities, aircraft exterior maintenance, or human / robot work on moving objects. This device can be used in scenarios requiring connection to temporary attachment structures, tools, work platforms, insulator strings, conductors, or moving parts at heights, and is particularly suitable for work environments where the attachment structure poses a fall risk and the path of dangerous loads needs to be cut off promptly.

[0028] In summary, this invention addresses the problem of "falling structures easily dragging workers" in existing high-altitude work protection systems by proposing a novel safety connection device. Compared with existing technologies, this invention has the following main advantages:

[0029] First, this invention changes the traditional fall arrest device's protection approach that relies solely on high-strength connections and locking brakes. By setting up an intelligent load-bearing ring that can break under a preset load, the dangerous connection between the worker and the structure to which the fall is attached can be actively severed, thus forming a "normal connection, dangerous disconnection" failure safety mechanism.

[0030] Secondly, the present invention uses a purely mechanical structure to achieve triggering, without relying on electronics, batteries or control systems, and can maintain high reliability in environments such as high temperature, low temperature, humidity, strong electromagnetic fields and long-term outdoor use, reducing the risk of false triggering and failure to trigger.

[0031] Furthermore, this device has a compact structure, low cost, and is easy to install and use. It can be directly used with existing standard equipment such as safety belts, safety ropes, shackles, and D-rings, and has strong engineering practicality and promotional value.

[0032] Finally, the present invention constructs a new protection level through the coordinated configuration of intelligent load-bearing ring, connecting components and safety rope: the safety rope is responsible for personnel fall protection, and the device is responsible for cutting off the load path when the attached structure falls. The two work together to improve the overall safety in complex high-altitude operation scenarios. Attached Figure Description

[0033] To more clearly illustrate the embodiments of this technical solution, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this technical solution. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure of the intelligent safety device for working at heights according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating the usage of the device according to an embodiment of the present invention during high-altitude operations on power transmission lines.

[0036] Explanation of reference numerals in the attached figures

[0037] 1-Intelligent load-bearing ring;

[0038] 2-Upper connecting shackle;

[0039] 3-Lower connection shackle;

[0040] 4-Attached side connecting rope;

[0041] 5-Combined tether D-ring;

[0042] 6- Attached to the connecting rope;

[0043] 7-Pole crossarm;

[0044] 8-Insulator string;

[0045] 9-Safety rope. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the core concept of the present invention and the following embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] All terms used in this application have the same meaning as understood by one of ordinary skill in the art to which this application pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0048] It should be noted that techniques, methods and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods and equipment should be considered part of the instruction manual.

[0049] It should be noted that these embodiments are provided to make the application thorough and complete, and to fully express the scope of the application to those skilled in the art. It should be observed that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​described in these embodiments should be interpreted as merely exemplary and not as limiting.

[0050] In the description of this technical solution, it should be understood that the terms "lateral," "longitudinal," "left," "right," "top," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the technical solution and for simplification, and 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. Therefore, they should not be construed as limitations on this technical solution. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this technical solution, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this technical solution, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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. For those skilled in the art, the specific meaning of the above terms in this technical solution can be understood according to the specific circumstances.

[0052] Example 1

[0053] This embodiment provides an intelligent safety device for working at heights, which connects workers to objects during normal operations and automatically disconnects the dangerous connection when the objects fall unexpectedly.

[0054] like Figure 1 As shown, the intelligent safety device for working at heights in this embodiment mainly includes an intelligent support ring 1, a first connecting assembly, and a second connecting assembly. The first connecting assembly can use an upper connecting shackle 2, and the second connecting assembly can use a lower connecting shackle 3. The upper connecting shackle 2 is connected above the intelligent support ring 1, and the lower connecting shackle 3 is connected below the intelligent support ring 1. The upper connecting shackle 2 is used to connect to the D-ring 5 of the harness assembly via the attachment side connecting rope 4, and the lower connecting shackle 3 is used to connect to the attachment, working structure, or temporary support end via the attachment connecting rope 6. The first assembly must be connected to the lower hook of the safety belt, and connected to the lower hook of the safety rope via the D-ring of the harness assembly. The D-ring of the harness assembly must be replaced with one that meets the strength requirements. The strength of the lower hook of the safety rope has been considered in the safety rope assembly.

[0055] The intelligent load-bearing ring 1 is a closed-loop load-bearing structure with a through central hole inside, through which the upper connecting shackle 2 and the lower connecting shackle 3 can pass and connect. The material, cross-sectional shape, and dimensional parameters of the intelligent load-bearing ring 1 are designed to remain intact under normal service loads, but to break when the tensile force reaches or exceeds the rated breaking load.

[0056] During normal operation, the operator connects to the object using a double-strap combination harness, a D-ring 5 in the harness assembly, a side connecting rope 4, an upper connecting shackle 2, a smart load-bearing ring 1, a lower connecting shackle 3, and a connecting rope 6. At this time, the smart load-bearing ring 1 acts as a load-bearing connector, capable of withstanding normal tensile forces, swing loads, and positioning loads during operation. If the object accidentally falls, the falling structure applies a downward impact force to the smart load-bearing ring 1 via the connecting rope 6 and the lower connecting shackle 3. If this force exceeds the preset rated breaking load, the smart load-bearing ring 1 breaks, severing the load-bearing connection between the upper connecting shackle 2 and the lower connecting shackle 3.

[0057] At this point, the worker is no longer dragged by the structure to which the fall is attached, and their primary protection path is provided by the safety rope 9 and the safety harness system. The safety rope 9 continues to connect the tower crossarm 7 and the combined harness D-ring 5, keeping the worker suspended and thus reducing the risk of a fall.

[0058] In this embodiment, the basic structure of the intelligent load-bearing ring 1 is an integrated ring-shaped component, which does not contain electronic components, sensors, batteries, or electronic control switches. Whether it breaks is determined entirely by whether the tensile force at both ends reaches the rated breaking load. Therefore, it has a simple structure, direct response, and high reliability.

[0059] Example 2

[0060] This embodiment further explains the structural parameters and design principles of the intelligent load-bearing ring 1 based on embodiment 1.

[0061] The intelligent load-bearing ring 1 adopts a rectangular cross-section structure. The outer diameter D of the intelligent load-bearing ring 1 can be set to 38.348 mm, the inner diameter d can be set to 24 mm, and the axial thickness H can be set to 9.32 mm. The inner hole and outer circle of the intelligent load-bearing ring 1 form a continuous annular load-bearing section. The height and width of the section are relatively stable, which is beneficial to controlling the stress level at the time of fracture.

[0062] The unmarked fillet radius of the intelligent load-bearing ring 1 can be set to R0.5mm to R1mm to reduce stress concentration at sharp corners. The machining accuracy of the intelligent load-bearing ring 1 can be controlled at IT8 level to ensure dimensional consistency between different batches of products.

[0063] In this embodiment, the intelligent load-bearing ring 1 adopts a ring-shaped tensile failure mode. The failure load of the ring is P. The required cross-sectional area varies for the same material under different failure modes. To accurately determine the value of P, the cross-sectional area K is used as the control quantity for the value of P. Compared with other structural forms, the ring-shaped tensile structure has a larger cross-sectional area and a more uniform stress distribution, which enables precise control of the breaking force, resulting in smaller dispersion and higher consistency of the fracture load of batch products.

[0064] In this embodiment, the intelligent load-bearing ring 1 is made of 3003 series aluminum-manganese alloy in a semi-hard state. This material has moderate tensile strength and good machinability. Specifically, the tensile strength of the intelligent load-bearing ring 1 can be set to not less than 160 MPa. By matching the material strength with the cross-sectional area, the intelligent load-bearing ring 1 can undergo stable fracture near the design load.

[0065] Furthermore, the rated breaking load of the intelligent load-bearing ring 1 can be set to 1000N to 1100N. This range is suitable for most conventional high-altitude work scenarios, ensuring reliable connection during normal use and timely disconnection in the event of a significant impact from a falling object. In practical applications, different rated breaking load levels can be selected based on the type of work, the weight of personnel and equipment, the weight of the object being supported, and safety factor requirements.

[0066] This embodiment utilizes a rectangular cross-section, aluminum alloy material, semi-hardening treatment, and dimensional precision control to ensure more stable fracture behavior of the intelligent load-bearing ring 1. Compared to ordinary steel connectors, the aluminum alloy intelligent load-bearing ring 1 is more likely to fail after reaching the design load, thus protecting workers from excessive impact.

[0067] Example 3

[0068] This embodiment further defines the connecting components and the matching ropes based on Embodiment 1 or Embodiment 2.

[0069] like Figure 1As shown, the first connecting assembly includes an upper connecting shackle 2, and the second connecting assembly includes a lower connecting shackle 3. Both the upper connecting shackle 2 and the lower connecting shackle 3 can be made of stainless steel. Specifically, the stainless steel shackle can be an M5 specification 304 stainless steel shackle. This specification of shackle is of moderate size, making it easy to insert into the inner hole of the intelligent load-bearing ring 1, and also easy to connect with the attached side connecting rope 4, the tie assembly D-ring 5, and the attached connecting rope 6.

[0070] The upper connecting shackle 2 passes through the upper inner hole area of ​​the intelligent load-bearing ring 1, and the lower connecting shackle 3 passes through the lower inner hole area of ​​the intelligent load-bearing ring 1. The intelligent load-bearing ring 1, the upper connecting shackle 2, and the lower connecting shackle 3 form a hinged connection, constituting a tension-bearing structure. This hinged connection reduces the influence of torsion and eccentric loads on the intelligent load-bearing ring 1, allowing it to be under radial tension in most cases, which helps improve the stability of the fracture load.

[0071] Furthermore, the single load-bearing capacity of the M5 specification 304 stainless steel shackle can be set to no less than 160kg, with a safety factor of no less than 4. This parameter ensures that the connecting components themselves have high reliability under normal use, short-term impact, and frequent disassembly and assembly conditions, preventing the shackle from failing before the intelligent load-bearing ring 1.

[0072] This embodiment may also include an attachment-side connecting rope 4. One end of the attachment-side connecting rope 4 is connected to the upper connecting shackle 2, and the other end of the attachment-side connecting rope 4 is used to connect to the D-ring 5 of the harness assembly. The attachment-side connecting rope 4 may be made of braided rope of the same material as the safety rope, ensuring connection strength while maintaining flexibility.

[0073] When the intelligent load-bearing ring 1 disconnects, the safety rope 9 continues to provide suspension protection for the worker. Therefore, this device does not replace the safety rope, but rather adds a fail-safe protective connection between the worker and the object of attachment, making the protection system more efficient.

[0074] Example 4

[0075] This embodiment provides a specific application method of this device in high-altitude operations on power transmission lines.

[0076] like Figure 2 As shown, when workers are operating near transmission line towers, the tower crossarm 7, insulator strings 8, conductors, or related tools and equipment can serve as temporary support structures. Workers wear double-strap safety harnesses, with the D-ring of the harness assembly positioned on the worker's back (i.e., the D-ring 5 of the harness assembly). The upper end of the safety rope 9 is secured to a reliable anchor point on the tower crossarm 7, and the lower end of the safety rope 9 is connected to the D-ring 5 of the harness assembly, forming a fall protection path.

[0077] The connection sequence of the attachment device is as follows: the D-ring 5 of the tether assembly is connected to the upper end of the attachment-side connecting rope 4; the lower end of the attachment-side connecting rope 4 is connected to the upper connecting shackle 2; the upper connecting shackle 2 is connected to the upper side of the intelligent load-bearing ring 1; the lower side of the intelligent load-bearing ring 1 is connected to the lower connecting shackle 3; and the lower connecting shackle 3 is connected to the insulator string 8 or other attachments via the attachment connecting rope 6. That is, the upper side of the attachment device is first connected to the D-ring at the lower end of the safety rope, and then the lower side is connected to the attachment. Another important function of the attachment device is to facilitate personnel operation. Otherwise, it would be difficult for workers at heights to determine their position, making operation inconvenient. Workers would need to use one hand to hold onto something; when both hands are required for operation, the convenience of the attachment device becomes apparent.

[0078] During normal operation, operators can use this device to maintain connection with the insulator string 8 or tooling, facilitating positioning, auxiliary fixing, and follow-up operations. At this time, the intelligent load-bearing ring 1 withstands the normal working tensile force without breaking.

[0079] When the insulator string 8 or its attached structure falls due to connection failure, component breakage, misoperation, or external impact, the falling structure will exert a downward pulling force on the intelligent load-bearing ring 1 through the attached connecting rope 6 and the lower connecting shackle 3. If the pulling force reaches or exceeds the rated breaking load of the intelligent load-bearing ring 1, the intelligent load-bearing ring 1 will break, and the load-bearing connection between the upper connecting shackle 2 and the lower connecting shackle 3 will be severed.

[0080] At this point, the falling insulator string 8 or its attached structure will no longer drag the workers down through this device. The workers are still protected by the safety rope 9 and safety harness system, thereby reducing the risk of being pulled down by the rope.

[0081] The operation process of this embodiment may include the following steps: When the operator arrives near the work position, the upper end of the safety rope 9 is first fixed to a reliable position on the crossarm 7 of the tower, and the lower end of the safety rope 9 is connected to the D-ring 5 of the safety belt fastening assembly; after the operator arrives at the work position, the upper end of the attachment device is connected to the lower hook of the safety rope.

[0082] The lower end of the attachment device is connected to the insulator string 8 or the attachment device via the attachment connecting rope 6; the operator carries out the work; after the work is completed, the connection between the attachment device and the insulator string 8 or the attachment is released; the operator returns to the starting position. In this process, this device mainly undertakes the function of "normal connection and dangerous disconnection", which does not affect the normal connection between the operator and the attachment structure, and can cut off the dangerous load path in time in the event of an accidental fall.

[0083] Example 5

[0084] This embodiment provides an application method for this device in other high-altitude operation scenarios.

[0085] This device can be applied to high-altitude construction work scenarios. For example, when workers are working near building exterior walls, scaffolding, suspended platforms, temporary platforms, or steel structures, if there is a risk of the temporary platform, scaffolding components, tool bags, or temporary support structures falling, this device can be placed between the worker and such attachments. When the attachment falls, the intelligent load-bearing ring 1 will disconnect in time to prevent the worker from being dragged.

[0086] This device can also be applied to aerospace or aircraft maintenance scenarios. For example, when working on aircraft fuselages, wings, engine nacelles, spacecraft exteriors, or high-altitude maintenance platforms, workers or robots may need to be connected to temporary tooling, maintenance platforms, attachment tools, or moving parts. This device can sever dangerous connections in the event of accidental movement or fall from the attached structure, improving operational safety.

[0087] In addition, this device can also be applied to human / robot work scenarios on moving objects. When the work object is in a moving, swinging, lifting, or rotating state, if the operator or robot needs to maintain a temporary connection with the moving structure, this device can preferentially disconnect when abnormal tension occurs, preventing the moving structure from dragging the operator or robot to a dangerous area.

[0088] It should be noted that the rated breaking load under different application scenarios can be adjusted according to specific needs. For example, for human operation scenarios, the rated breaking load can be preferably selected from 1000N to 1100N; for robot, tooling or heavy-duty attached structure scenarios, the size and material of the intelligent load-bearing ring 1 can also be redesigned according to the safety factor, structural weight and allowable impact load.

[0089] Other embodiments

[0090] This embodiment mainly illustrates several feasible structural methods of this device.

[0091] In some embodiments, the intelligent load-bearing ring 1 may also adopt other cross-sectional shapes, such as elliptical cross-section, racetrack-shaped cross-section, trapezoidal cross-section, or locally weakened cross-section. As long as it can break under a preset tensile force and sever the connection between the two ends, it falls within the protection scope of this invention.

[0092] In some embodiments, the intelligent load-bearing ring 1 can also be made of other aluminum alloy grades, such as 5-series or 6-series aluminum alloys. Different grades can be combined with different thicknesses, widths, fillet radii, and heat treatment states to obtain different fracture load ratings.

[0093] In some embodiments, the first and second connecting components are not limited to shackles, but can also employ structures such as eyelets, connecting rings, quick-release clips, carabiners, hinge plates, and pin connections. Any structure capable of connecting the strap assembly end and the attachment structure end separately, and forming a load-bearing connection with the intelligent load-bearing ring 1, falls within the scope of protection of this invention.

[0094] In some embodiments, the smart load-bearing ring 1 may also be provided with one or more stress concentration grooves, weakening grooves, notches, or thinning areas to further control the fracture location and fracture load. Such structures allow the smart load-bearing ring 1 to fracture preferentially at a predetermined location, improving triggering consistency.

[0095] All the above embodiments should be understood as equivalent variations within the scope of the core inventive concept of this invention. The core of this invention does not lie in a specific cross-section or a specific connection form, but in forming a safe connection that can be automatically disconnected between the operator and the attached object or structure through a load-bearing component with a preset fracture strength.

[0096] All aspects not detailed in this invention are conventional technical means known to those skilled in the art.

[0097] The above content shows and describes the basic principles, main features, and beneficial effects of this technical solution. The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of this technical solution. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this technical solution should be included within the protection scope of this technical solution.

Claims

1. An intelligent safety device for working at heights, characterized in that, The system includes an intelligent load-bearing ring, a first connecting component, and a second connecting component. The intelligent load-bearing ring is a closed-loop load-bearing structure with a preset rated breaking load. The first connecting component is located on one side of the intelligent load-bearing ring and is used to connect the safety rope hook at the D-ring of the safety rope's lower end. The second connecting component is located on the other side of the intelligent load-bearing ring and is used to connect to an object. When the tension between the first connecting component and the second connecting component reaches or exceeds the rated breaking load, the intelligent load-bearing ring breaks, releasing the load-bearing connection between the first connecting component and the second connecting component.

2. The intelligent safety device for working at heights according to claim 1, characterized in that, The intelligent load-bearing ring adopts an integrated ring structure with a rectangular cross-section.

3. The intelligent safety device for working at heights according to claim 2, characterized in that, The intelligent load-bearing ring has an outer diameter of 38mm to 39mm, an inner diameter of 23mm to 25mm, an axial thickness of 9mm to 10mm, and an unmarked fillet radius of R0.5mm to R1mm, with an accuracy grade of IT8.

4. The intelligent safety device for working at heights according to any one of claims 1-3, characterized in that, The intelligent load-bearing ring is made of aluminum alloy.

5. The intelligent safety device for working at heights according to claim 4, characterized in that, The intelligent load-bearing ring is made of 3003 series aluminum-manganese alloy semi-hard state material, and its tensile strength is not less than 160MPa.

6. The intelligent safety device for working at heights according to any one of claims 1-3 and 5, characterized in that, Both the first connecting component and the second connecting component include stainless steel shackles, which are inserted into the inner hole of the intelligent load-bearing ring to form a tension-bearing structure for the intelligent load-bearing ring.

7. The intelligent safety device for working at heights according to claim 6, characterized in that, The stainless steel shackles are M5 specification 304 stainless steel shackles, with a single load-bearing capacity of not less than 160kg and a safety factor of not less than 4.

8. The intelligent safety device for working at heights according to any one of claims 1-3, 5, and 7, characterized in that, The rated breaking load of the intelligent load-bearing ring is 1000N to 1100N.

9. The intelligent safety device for working at heights according to claim 8, characterized in that, It also includes a safety rope, the lower end of which is connected to the D-ring of the tether assembly. The first connecting assembly is also connected to the D-ring of the tether assembly via an attachment-side connecting rope. The safety rope has a diameter of 14mm and a minimum breaking force of not less than 1600kg.

10. The intelligent safety device for working at heights according to any one of claims 1-3, 5, 7, and 9, characterized in that, The intelligent safety device for working at heights is applied to scenarios such as power transmission and distribution line tower work, communication, high-altitude construction work, spacecraft extravehicular activities, aircraft exterior maintenance, or human / robot work on moving objects.

Images