High-altitude operation safety protection and tool transfer device special for power transmission and transformation equipment

Abstract

The invention provides a special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment, which is fixed on an iron tower or a pole tower of the power transmission and transformation equipment through a bearing mechanism, encloses a high-altitude operation space through a safety protection mechanism, and further comprises a lateral tool transfer mechanism, the transmission box is driven by the electric winch to ascend and descend, the controller is used for controlling the electric winch, and a transmission cable is arranged between the transmission box and the electric winch; an intelligent control system of the device is connected with a monitoring module and an electric winch; the monitoring module comprises a weight sensor for detecting the load mass of the transfer box and a tension sensor for detecting the tension of the transfer cable; a microcontroller of the intelligent control system dynamically adjusts the output of the electric winch based on the load mass m, and the cable safety coefficient is calculated through tension and serves as a safety working condition criterion of safety monitoring; according to the invention, high efficiency, safety and specialization are integrated in the aspects of design and use.

Description

Technical Field

[0001] This invention relates to the field of high-altitude work equipment technology, and in particular to a safety protection and tool transfer device for high-altitude work specifically for power transmission and transformation equipment. Background Technology

[0002] The stable operation of power transmission and transformation networks depends on the regular inspection and maintenance of equipment such as high-altitude towers and poles. These work sites are usually tens of meters above the ground, with complex environments, and fall into the category of high-risk operations.

[0003] Currently, the following prominent problems and defects are common in high-altitude operations in this field:

[0004] Safety protection measures are limited and inadequate: the safety of workers mainly relies on personal safety belts. The work platform is usually the crossarm of the tower itself, with a small space and a lack of effective side and bottom protection. This leaves workers constantly exposed to the risk of falling from heights. At the same time, tools carried or disassembled parts are also very likely to fall accidentally, posing a serious safety threat to ground personnel, equipment, and power grid operation.

[0005] The methods of transferring tools and materials are primitive and inefficient: the transfer of tools and materials between different levels still widely relies on the primitive method of "tying ropes and pulling by hand." This method has many drawbacks:

[0006] Inefficient: Each transfer requires steps such as binding, hoisting, and unbinding, which consumes a lot of operation time.

[0007] High safety risks: During hoisting, tools are very likely to fall off due to insecure binding or collision with the tower, resulting in "falling objects from high altitude".

[0008] Inconvenient to operate: Additional personnel are required to be responsible for ground-side binding and traction, resulting in high labor costs.

[0009] Poor communication in the work environment: Communication between personnel at height and on the ground relies mainly on shouting. Due to environmental factors such as wind noise and distance, instructions and information are easily mistransmitted or missed, which not only affects work efficiency but also creates safety hazards for misoperation.

[0010] Although some aerial work platforms or tool baskets have emerged in the existing technology, most of them have limited functions or are not adapted to the angle steel and crossarm structures unique to power transmission and transformation towers. They suffer from problems such as inconvenient installation, poor versatility, and incomplete protection functions, and have failed to fundamentally solve the above pain points.

[0011] Therefore, there is an urgent need in this field for a comprehensive device that integrates high efficiency, safety, and specialization to completely revolutionize the current outdated and high-risk high-altitude operation mode for power transmission and transformation. Summary of the Invention

[0012] This invention proposes a special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment, which integrates high efficiency, safety and specialization in design and use.

[0013] The present invention adopts the following technical solution.

[0014] A safety protection and tool transfer device for high-altitude operations of power transmission and transformation equipment is provided. The device is fixed to the iron tower or pole of the power transmission and transformation equipment by a supporting mechanism (100), and the high-altitude operation space is enclosed by a safety protection mechanism (200) set at the supporting mechanism (100). It also includes a tool transfer mechanism (300) set on the side of the supporting mechanism (100), which includes an electric winch (310), a transfer box (320) driven to rise and fall by the electric winch (310), and a controller (350) for controlling the electric winch (310). A transfer cable (340) is provided between the transfer box (320) and the electric winch (310).

[0015] The intelligent control system of the device is electrically connected to the monitoring module and the electric winch (310); the monitoring module includes a weight sensor for detecting the load mass of the transfer box (320) and a tension sensor for detecting the tension of the transfer cable (340); the microcontroller of the intelligent control system dynamically adjusts the output of the electric winch (310) based on the load mass m, calculates the cable safety factor based on the tension, and uses it as a safety condition criterion for safety monitoring.

[0016] The microcontroller dynamically adjusts the output of the electric winch (310) based on the load mass m of the transfer box, so that its expected output torque T is determined according to the following formula:

[0017] Configure and dynamically adjust;

[0018] Where g is the acceleration due to gravity; r is the radius of the winch drum; and a is the preset acceleration value of the transfer box. The equivalent frictional resistance of the system is determined experimentally.

[0019] The microcontroller adaptively controls the winch's output torque T by using different preset acceleration values ​​'a' at different stages of the tool transfer process, combined with the real-time load mass 'm'. This achieves the desired operation effect of heavy-load low-speed and light-load high-speed while ensuring smooth lifting and safety. The preset acceleration value 'a' includes the acceleration value during the start-up acceleration phase. During the uniform velocity phase (a=0) and the deceleration / braking phase... .

[0020] The microcontroller is also used to run the cable health status and anti-sway control model. Specifically, the microcontroller calculates the cable safety factor based on the cable tension, which serves as the basis for determining the safe operating condition for safety monitoring. The calculation formula is as follows:

[0021] ,

[0022] in, The rated breaking strength of the cable. For real-time tension measurement;

[0023] when When the value is below the preset threshold, the intelligent control system issues an early warning or causes the winch to operate at a lower speed. By monitoring the periodic fluctuations in tension caused by the swing of the cable, the intelligent control system establishes an anti-sway model and actively suppresses the swing amplitude of the transfer box by introducing short-duration acceleration or deceleration control during the lifting and lowering of the transfer box.

[0024] The device also includes a status monitoring and transmission system, which includes a camera for collecting images of the work site environment and an Internet of Things module for wirelessly transmitting the images, the load mass, and the cable safety factor information to a remote monitoring center.

[0025] The microcontroller quantifies the overall safety status of the device based on a comprehensive evaluation function S, and triggers a comprehensive alarm when S exceeds a safety threshold. The comprehensive evaluation function is:

[0026]

[0027] Where w1, w2, and w3 are weighting coefficients. For maximum design load, Other alarm indication values;

[0028] When S exceeds the safety threshold, the intelligent control system automatically triggers an audible and visual alarm and executes safety policies (such as stopping operation or locking).

[0029] The supporting mechanism includes a main frame (110) and at least one set of clamping components (120) disposed on the main frame (110);

[0030] The safety protection mechanism includes a guardrail (210) that can be unfolded and retracted, and a safety net (220) installed on the guardrail (210);

[0031] The tool transfer mechanism is equipped with multiple sets of guide pulleys (330) at the guardrail (210).

[0032] The clamping assembly (120) includes a fixed clamping block (121) fixedly connected to the main frame (110), a movable clamping block (122) disposed opposite to the fixed clamping block (121), and a locking drive unit that drives the movable clamping block (122) to move linearly. The operation of the locking drive unit enables the movable clamping block (122) and the fixed clamping block (121) to work together. The locking drive unit is a locking screw (123), and the movable clamping block (122) is provided with a threaded hole that mates with the locking screw (123).

[0033] The guardrail (210) is connected to the main frame (110) by a hinge. When it is flipped outward to a vertical state, it is in the enclosure mode. When it is flipped inward to a horizontal state, it is in the folding and retracting mode. The safety net (220) is installed on the top of the guardrail (210) through an elastic rewinding mechanism. When the safety net is pulled down, it can cover the space below the guardrail (210).

[0034] The elastic rewinding mechanism is a net roll (230) with a built-in torsion spring. The free end of the safety net (220) is provided with a locking element for locking it at different heights on the guardrail (210). The net roll (230) is also provided with a damper for controlling the rewinding speed of the safety net (220).

[0035] The tool transfer mechanism (300) further includes a tool fixing unit disposed in the transfer box (320), the tool fixing unit including a grid (321) for inserting tools and a magnetic seat (322) for adsorbing metal tools;

[0036] The main frame (110) is made of high-strength aluminum alloy and adopts a modular design. Its various parts are assembled by standardized quick connectors. The main frame (110) is also equipped with a hanging ring for attaching a safety belt and a sealed box for storing emergency supplies.

[0037] The controller (350) is a wireless remote controller. The device is also provided with a receiving module for communicating with the wireless remote controller. The receiving module also includes a communication module (360) integrated on the device. The communication module (360) is a full-duplex intercom system, which includes a host unit located on the main frame (110) and portable auxiliary units for use by ground personnel and high-altitude workers respectively.

[0038] The deployment of the device includes the following steps;

[0039] Step 1: Installation and fixing of the load-bearing mechanism: See Figure 1 and Figure 2The load-bearing mechanism is the foundation of the entire device. First, ground personnel assemble the modular main frame using quick-connect fittings; then, the device is hoisted to the predetermined working height using lifting equipment (or by high-altitude workers), so that the angle steel of the tower's angle steel crossarm is positioned between the fixed and movable clamping blocks of the clamping assembly;

[0040] Subsequently, the operators used a wrench to turn the locking screw. The movable clamping block has a threaded hole that mates with the locking screw. By turning the screw, the movable clamping block is driven to move linearly towards the fixed clamping block. As the screw is continuously tightened, the movable clamping block and the fixed clamping block work together to finally firmly clamp the two sides of the angle steel. The rubber or polyurethane anti-slip pads (124) on the clamping surface greatly increase the friction and prevent the device from sliding. On the other hand, they also protect the galvanized layer on the surface of the tower angle steel from hard scratches. The hanging rings set on the main frame are used to hook the secondary safety belts of the operators. The emergency supplies box is pre-stored with spare fall arresters, fire extinguishers and first aid kits to deal with emergencies.

[0041] Step Two: Deployment and Use of Safety Protection Mechanisms: See [link / reference] Figure 1 and Figure 3 Once the device is securely fixed, the operator pulls down the pull ring at the end of the safety net. The safety net is pulled out from the net roll hidden inside the top crossbar of the guardrail; the net roll provides the rewinding force with its internal torsion spring, but the safety net can be pulled out smoothly when pulled down; the safety net (220) is pulled down to completely cover the gap between the platform and the guardrail to effectively prevent personnel or tools from falling from this area, and the locking pin (231) on the edge of the safety net is inserted into the corresponding pin hole on the side wall of the main frame to fix it in this protective state; this design realizes three-dimensional and all-round protection of the work space; after the work is completed, the locking pin (231) is pulled out, and under the action of the elastic force, the safety net (220) will automatically and neatly rewind back into the net roll (230), and then the guardrail (210) is folded back onto the main frame platform for easy storage and transportation;

[0042] In the picture, guardrail 210 is not fully shown. Figure 1 This is just for illustrative purposes; in actual use, the guardrails are installed around the load-bearing structure.

[0043] The use of the tool transfer mechanism of the device includes the following steps; see [link to documentation]. Figure 1 and Figure 4 The tool transfer mechanism (300) is independently located on one side of the main frame, without interfering with other mechanisms. Its workflow is as follows:

[0044] Ground preparation: Ground personnel put the tools and parts required for this operation into the transfer box (320), use the tools in the box to fix the grid (321), and insert long tools such as screwdrivers and wrenches into the grid; use the magnetic tool holder (322) to attract and fix the metal tools; this effectively prevents the tools from falling due to shaking or collision during the lifting process;

[0045] Lifting command: Ground personnel issue an "ascend" command via a handheld wireless controller (350) [paired with the receiver module in the electric winch (310); the electric winch (310) starts, retracts the transfer cable (340), and the cable, guided by the guide pulley (330), smoothly lifts the transfer box (320) to the high-altitude work point;

[0046] High-altitude retrieval: High-altitude workers retrieve the necessary tools from the passbox. During this time, ground and high-altitude personnel can communicate in real time and clearly through the communication module (360) (full-duplex intercom system) integrated on the device to confirm the delivery requirements and work instructions.

[0047] Return and Retransfer: The worker at height places the replaced tools or disassembled old parts into the empty container of the transfer box and issues a "descend" command via a handheld wireless controller to send the transfer box back to the ground. This cycle continues until the operation is complete.

[0048] The tool transfer mechanism integrates a monitoring module and a tension sensor. The weight sensor monitors the load of the transfer box in real time. If overloaded, it automatically stops the winch and alarms to prevent the equipment from operating under overload conditions. The tension sensor monitors the slack of the cable to prevent slack rope from getting tangled. The operation process is recorded by a camera and the operation data is remotely transmitted to the monitoring center through an IoT module to realize remote visual supervision and information management of the operation.

[0049] Work completion and device recovery: After all the work is completed, repeat the reverse process of the above operation: retrieve all tools into the transfer box and send them to the ground; put away the safety net and fold the guardrail; finally, loosen the locking screws (123) of each clamping component (120) to separate the device from the tower crossarm, and have it hoisted to the ground by lifting equipment or personnel, and disassembled into modular units for transportation.

[0050] Compared with the prior art, the high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment provided by the present invention has the following significant advantages:

[0051] 1. Achieves three-dimensional and intrinsically safe protection: By setting up deployable rigid guardrails and retractable safety nets, this invention constructs a closed safe working space for workers, open at the top but protected on the sides and bottom. This fundamentally eliminates the risk of accidental falls and the dropping of small tools and materials, upgrading safety measures from a "single insurance" relying on individual skills to a systematic "double insurance," greatly improving the intrinsic safety level of the operation.

[0052] 2. This invention provides an efficient and reliable tool transfer solution: Through an electrically controlled winch, a dedicated transfer box, and a wireless control system, it achieves rapid, stable, and controllable transfer of tools and materials. It avoids cumbersome binding procedures, enabling "one-button lifting" and significantly improving work efficiency. The tool fixing grid and magnetic tool holder inside the transfer box effectively prevent tools from shaking, colliding, and falling during lifting, ensuring a safe and reliable transfer process.

[0053] 3. Demonstrates high specialization and convenience: The adjustable clamping components, designed specifically for power transmission and transformation tower structures, can be quickly and securely installed on angle steel or crossarms of different specifications, offering strong versatility without damaging the tower materials. The modular design of the device also facilitates transportation and rapid on-site assembly, greatly enhancing its field applicability.

[0054] 4. It integrates modern functions and optimizes the work process: ensuring clear and accurate transmission of instructions between personnel at high altitudes and on the ground, and eliminating communication blind spots.

[0055] 5. Significant comprehensive benefits: This invention organically integrates three major functions: safety protection, tool delivery, and personnel communication. It not only greatly reduces safety risks and improves the efficiency of a single operation, but also effectively reduces the physical burden and psychological pressure on operators, thereby improving the overall efficiency and management level of the entire power transmission and transformation operation and maintenance work.

[0056] This invention proposes a dedicated safety protection and tool transfer device for high-altitude operations involving power transmission and transformation equipment, belonging to the technical field of high-altitude work equipment. It includes a support mechanism for fixing the entire device to the transmission and transformation equipment's tower or pole, comprising a main frame and at least one set of clamping components mounted on the main frame; a safety protection mechanism, mounted on the support mechanism, for enclosing the high-altitude work space, comprising a deployable and retractable guardrail and a safety net installed on the guardrail; and a tool transfer mechanism, located to the side of the support mechanism, comprising an electric winch, a transfer box driven and lifted by the electric winch, and a controller for controlling the electric winch. The advantages of this invention are: this device achieves three-dimensional and inherent safety protection, provides an efficient and reliable tool transfer solution, and embodies a high degree of specialization and convenience. Attached Figure Description

[0057] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0058] Appendix Figure 1 This is a three-dimensional schematic diagram of the overall structure of the device of the present invention in operation.

[0059] Appendix Figure 2 This is a partially enlarged schematic diagram of the bearing mechanism and clamping assembly of the present invention;

[0060] Appendix Figure 3 This is a side view of the safety net of the present invention in its deployed state;

[0061] Appendix Figure 4 This is a schematic diagram illustrating the structural principle of the tool transfer mechanism of the present invention;

[0062] Explanation of reference numerals in the attached drawings: bearing mechanism 100, main frame 110, clamping assembly 120, fixed clamping block 121, movable clamping block 122, locking screw 123, anti-slip pad 124, safety protection mechanism 200, guardrail 210, safety net 220, net roll 230, tool transfer mechanism 300, electric winch 310, transfer box 320, tool fixing grid 321, magnetic tool holder 322, guide pulley 330, transfer cable 340, controller 350, communication module 360. Detailed Implementation

[0063] As shown in the figure, a special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment is provided. The device is fixed to the iron tower or pole of the power transmission and transformation equipment by a supporting mechanism 100, and the high-altitude operation space is enclosed by a safety protection mechanism 200 set at the supporting mechanism 100. It also includes a tool transfer mechanism 300 set on the side of the supporting mechanism 100, which includes an electric winch 310, a transfer box 320 driven to rise and fall by the electric winch 310, and a controller 350 for controlling the electric winch 310. A transfer cable 340 is provided between the transfer box 320 and the electric winch 310.

[0064] The intelligent control system of the device is electrically connected to the monitoring module and the electric winch 310; the monitoring module includes a weight sensor for detecting the load mass of the transfer box 320 and a tension sensor for detecting the tension of the transfer cable 340; the microcontroller of the intelligent control system dynamically adjusts the output of the electric winch 310 based on the load mass m, calculates the cable safety factor based on the tension, and uses it as a safety condition criterion for safety monitoring.

[0065] The microcontroller dynamically adjusts the output of the electric winch 310 based on the load mass m of the transfer box, so that its expected output torque T is determined according to the following formula:

[0066] Configure and dynamically adjust;

[0067] Where g is the acceleration due to gravity; r is the radius of the winch drum; and a is the preset acceleration value of the transfer box. The equivalent frictional resistance of the system is determined experimentally.

[0068] The microcontroller adaptively controls the winch's output torque T by using different preset acceleration values ​​'a' at different stages of the tool transfer process, combined with the real-time load mass 'm'. This achieves the desired operation effect of heavy-load low-speed and light-load high-speed while ensuring smooth lifting and safety. The preset acceleration value 'a' includes the acceleration value during the start-up acceleration phase. During the uniform velocity phase (a=0) and the deceleration / braking phase... .

[0069] The microcontroller is also used to run the cable health status and anti-sway control model. Specifically, the microcontroller calculates the cable safety factor based on the cable tension, which serves as the basis for determining the safe operating condition for safety monitoring. The calculation formula is as follows:

[0070] ,

[0071] in, The rated breaking strength of the cable. For real-time tension measurement;

[0072] when When the value is below the preset threshold, the intelligent control system issues an early warning or causes the winch to operate at a lower speed. By monitoring the periodic fluctuations in tension caused by the swing of the cable, the intelligent control system establishes an anti-sway model and actively suppresses the swing amplitude of the transfer box by introducing short-duration acceleration or deceleration control during the lifting and lowering of the transfer box.

[0073] The device also includes a status monitoring and transmission system, which includes a camera for collecting images of the work site environment and an Internet of Things module for wirelessly transmitting the images, the load mass, and the cable safety factor information to a remote monitoring center.

[0074] The microcontroller quantifies the overall safety status of the device based on a comprehensive evaluation function S, and triggers a comprehensive alarm when S exceeds a safety threshold. The comprehensive evaluation function is:

[0075]

[0076] Where w1, w2, and w3 are weighting coefficients. For maximum design load, Other alarm indication values;

[0077] When S exceeds the safety threshold, the intelligent control system automatically triggers an audible and visual alarm and executes safety policies such as stopping operation or locking.

[0078] The supporting mechanism includes a main frame 110 and at least one set of clamping components 120 disposed on the main frame 110;

[0079] The safety protection mechanism includes a protective railing 210 that can be extended and retracted, and a safety net 220 installed on the protective railing 210;

[0080] The tool transfer mechanism is equipped with multiple sets of guide pulleys 330 at the guardrail 210.

[0081] The clamping assembly 120 includes a fixed clamping block 121 fixedly connected to the main frame 110, a movable clamping block 122 disposed opposite to the fixed clamping block 121, and a locking drive unit for driving the movable clamping block 122 to move linearly. The operation of the locking drive unit enables the movable clamping block 122 to work in coordination with the fixed clamping block 121. The locking drive unit is a locking screw 123, and the movable clamping block 122 is provided with a threaded hole that mates with the locking screw 123.

[0082] The guardrail 210 is connected to the main frame 110 by a hinge. When it is flipped outward to a vertical position, it is in the enclosure mode. When it is flipped inward to a horizontal position, it is in the folded and retracted mode. The safety net 220 is installed on the top of the guardrail 210 through an elastic rewinding mechanism. When the safety net is pulled down, it can cover the space below the guardrail 210.

[0083] The elastic rewinding mechanism is a net roll 230 with a built-in torsion spring. The free end of the safety net 220 is provided with locking components for locking it at different heights to the guardrail 210. The net roll 230 is also provided with a damper for controlling the rewinding speed of the safety net 220.

[0084] The tool transfer mechanism 300 further includes a tool fixing unit disposed within the transfer box 320. The tool fixing unit includes a grid 321 for inserting tools and a magnetic seat 322 for adsorbing metal tools.

[0085] The main frame 110 is made of high-strength aluminum alloy and adopts a modular design. Its various parts are assembled through standardized quick connectors. The main frame 110 is also equipped with a hanging ring for attaching a safety belt and a sealed box for storing emergency supplies.

[0086] The controller 350 is a wireless remote controller. The device is also equipped with a receiving module for communicating with the wireless remote controller. The receiving module also includes a communication module 360 ​​integrated on the device. The communication module 360 ​​is a full-duplex intercom system, which includes a main unit on the main frame 110 and portable auxiliary units for use by ground personnel and high-altitude workers respectively.

[0087] The deployment of the device includes the following steps;

[0088] Step 1: Installation and fixing of the load-bearing mechanism: See Figure 1 and Figure 2 The load-bearing mechanism is the foundation of the entire device. First, ground personnel assemble the modular main frame using quick-connect fittings; then, the device is hoisted to the predetermined working height using lifting equipment or by personnel working at height, so that the angle steel of the tower's angle steel crossarm is positioned between the fixed and movable clamping blocks of the clamping assembly;

[0089] Subsequently, the workers used a wrench to turn the locking screw. The movable clamping block has a threaded hole that mates with the locking screw. By turning the screw, the movable clamping block is driven to move linearly towards the fixed clamping block. As the screw is continuously tightened, the movable clamping block and the fixed clamping block work together to finally firmly clamp the two sides of the angle steel. The rubber or polyurethane anti-slip pads 124 on the clamping surface greatly increase the friction and prevent the device from sliding. On the other hand, they also protect the galvanized layer on the surface of the tower angle steel from hard scratches. The hanging rings on the main frame are used to attach the secondary safety belts of the workers. The emergency supplies box contains spare fall arresters, fire extinguishers and first aid kits to deal with emergencies.

[0090] Step Two: Deployment and Use of Safety Protection Mechanisms: See [link / reference] Figure 1 and Figure 3 Once the device is securely fixed, the operator pulls down the pull ring at the end of the safety net. The safety net is pulled out from the net roll hidden inside the top crossbar of the guardrail; the net roll provides rewinding force with its internal torsion spring, but the safety net can be pulled out smoothly when pulled down; the safety net 220 is pulled down to completely cover the gap between the platform and the guardrail to effectively prevent personnel or tools from falling from this area. The locking pin 231 at the edge of the safety net is inserted into the corresponding pin hole on the side wall of the main frame to fix it in this protective state; this design achieves three-dimensional, all-round protection of the work space; after the work is completed, the locking pin 231 is pulled out, and under the action of the elastic force, the safety net 220 will automatically and neatly rewind back into the net roll 230. Then the guardrail 210 is folded back onto the main frame platform for easy storage and transportation;

[0091] In the picture, guardrail 210 is not fully shown. Figure 1This is just for illustrative purposes; in actual use, the guardrails are installed around the load-bearing structure.

[0092] The use of the tool transfer mechanism of the device includes the following steps; see [link to documentation]. Figure 1 and Figure 4 The tool transfer mechanism 300 is independently located on one side of the main frame, without interfering with other mechanisms. Its workflow is as follows:

[0093] Ground preparation: Ground personnel place the tools and parts required for this operation into the transfer box 320, use the tool fixing grid 321 in the box to insert long tools such as screwdrivers and wrenches into the grid; use the magnetic tool holder 322 to attract and fix the metal tools; this effectively prevents the tools from falling due to shaking or collision during the lifting process;

[0094] Lifting command: Ground personnel issue an "ascend" command via a handheld wireless controller 350 [paired with the receiver module inside the electric winch 310]; the electric winch 310 starts, retracts the transfer cable 340, and the cable, guided by the guide pulley 330, smoothly lifts the transfer box 320 to the high-altitude work point.

[0095] High-altitude retrieval: High-altitude workers retrieve the necessary tools from the transfer box. During this process, ground and high-altitude personnel can communicate in real time and clearly through the communication module 360 ​​[full-duplex intercom system] integrated on the device to confirm transfer requirements and work instructions.

[0096] Return and Retransfer: The worker at height places the replaced tools or disassembled old parts into the empty container of the transfer box and issues a "descend" command via a handheld wireless controller to send the transfer box back to the ground. This cycle continues until the operation is complete.

[0097] The tool transfer mechanism integrates a monitoring module and a tension sensor. The weight sensor monitors the load of the transfer box in real time. If overloaded, it automatically stops the winch and alarms to prevent the equipment from operating under overload conditions. The tension sensor monitors the slack of the cable to prevent slack rope from getting tangled. The operation process is recorded by a camera and the operation data is remotely transmitted to the monitoring center through an IoT module to realize remote visual supervision and information management of the operation.

[0098] Work completion and device recovery: After all work is completed, repeat the reverse process of the above operation: retrieve all tools into the transfer box and send them to the ground; retract the safety net and fold the guardrail; finally, loosen the locking screws 123 of each clamping component 120 to separate the device from the tower crossarm, and have it hoisted to the ground by lifting equipment or personnel, and disassembled into modular units for transportation.

[0099] Example:

[0100] See Figure 1 In this example, the entire device is fixed to the angle steel crossarm of the tower by the supporting mechanism 100. Operators can stand on the stable platform provided by the main frame 110 to carry out operations.

[0101] Installation and fixing of the load-bearing mechanism:

[0102] See Figure 1 and Figure 2 The supporting mechanism 100 is the foundation of the entire device. First, ground personnel assemble the modularly designed main frame 110 using quick-connect fittings. Then, the device is hoisted to the predetermined working height using lifting equipment (or by aerial workers), so that the angle steel of the crossbeam is positioned precisely between the fixed clamping block 121 and the movable clamping block 122 of the clamping assembly 120.

[0103] Subsequently, the operator uses a wrench to turn the locking screw 123. Since the movable clamping block 122 has a threaded hole that mates with the locking screw 123, turning the screw drives the movable clamping block 122 to move linearly towards the fixed clamping block 121. As the screw continues to tighten, the movable clamping block 122 and the fixed clamping block 121 work together to firmly clamp both sides of the angle steel. The rubber or polyurethane anti-slip pads 124 on the clamping surface greatly increase friction, preventing the device from slipping, and also protect the galvanized layer on the angle steel surface from hard scratches. The hanging rings on the main frame 110 can be used to attach the secondary safety belts of the operators, and the emergency supply box contains spare fall arresters, fire extinguishers, and first-aid kits to deal with emergencies.

[0104] Deployment and use of security and protection mechanisms:

[0105] See Figure 1 and Figure 3 Once the device is securely fixed, the operator pulls down the pull ring at the end of the safety net 220. The safety net 220 is pulled out from the net roll 230 hidden inside the top crossbar of the guardrail. The net roll 230 has a torsion spring inside to provide rewinding force, but the safety net can be pulled out smoothly during downward movement. When the safety net 220 is pulled down to completely cover the gap between the platform and the guardrail, effectively preventing personnel or tools from falling from that area, the locking pin 231 at the edge of the safety net is inserted into the corresponding pin hole on the side wall of the main frame to fix it in this protective state. This design achieves three-dimensional, all-around protection of the work space. After the work is completed, the locking pin 231 is pulled out, and under the action of the spring force, the safety net 220 will automatically and neatly rewind back into the net roll 230. Then, the guardrail 210 is folded back onto the main frame platform for easy storage and transportation. Note that the guardrail 210 is not fully shown in the diagram. Figure 1 For reference only, in actual use, the guardrail 210 should be installed around the bearing structure 100.

[0106] Workflow of the tool delivery mechanism:

[0107] See Figure 1 and Figure 4 The tool transfer mechanism 300 is independently located on one side of the main frame, without interfering with other mechanisms. Its workflow is as follows:

[0108] Ground preparation: Ground personnel place the tools and parts required for this operation into the transfer box 320. Using the tool holder 321 inside the box, long tools such as screwdrivers and wrenches are inserted into the grid; the magnetic tool holder 322 is used to hold and secure the metal tools. This effectively prevents tools from falling due to shaking or collision during lifting and lowering.

[0109] Lifting command: Ground personnel issue an "ascend" command via a handheld wireless controller 350 (paired with the receiver module inside the electric winch 310). The electric winch 310 starts, retracts the transfer cable 340, and, guided by the guide pulley 330, smoothly lifts the transfer box 320 to the high-altitude work point.

[0110] High-altitude retrieval: High-altitude workers retrieve the necessary tools from the passbox 320. During this process, ground and high-altitude personnel can communicate clearly in real time through the communication module 360 ​​(full-duplex intercom system) integrated into the device to confirm pass requirements and work instructions.

[0111] Return and Retransfer: The worker at height places the replaced tools or disassembled old parts into an empty container and issues a "descend" command via a handheld wireless controller to send the container back to the ground. This cycle continues until the job is completed.

[0112] In a preferred embodiment, the tool transfer mechanism may also integrate a monitoring module and a tension sensor. The weight sensor monitors the load on the transfer box 320 in real time; if overloaded, it automatically stops the winch and triggers an alarm to prevent overload operation. The tension sensor monitors the slack state of the cable 340 to prevent tangled winding. Furthermore, the camera in the status monitoring and transmission system records the operation process and remotely transmits the data to the monitoring center via an IoT module, enabling remote visual supervision and information management of the operation.

[0113] Operation completion and equipment recovery:

[0114] After all the work is completed, repeat the reverse process of the above operation: retrieve all tools into the transfer box and send them to the ground; retract the safety net 220 and fold the guardrail 210; finally, loosen the locking screws 123 of each clamping component 120 to separate the device from the tower crossarm, and have it hoisted to the ground by lifting equipment or personnel, and disassembled into modular units for transportation.

Claims

1. A special safety protection and tool transfer device for high-altitude operations involving power transmission and transformation equipment, characterized in that: The device is fixed to the iron tower or pole of the power transmission and transformation equipment by the bearing mechanism (100), and the high-altitude working space is enclosed by the safety protection mechanism (200) set at the bearing mechanism (100). It also includes a tool transfer mechanism (300) set on the side of the bearing mechanism (100), which includes an electric winch (310), a transfer box (320) driven to rise and fall by the electric winch (310), and a controller (350) for controlling the electric winch (310). A transfer cable (340) is provided between the transfer box (320) and the electric winch (310). The intelligent control system of the device is electrically connected to the monitoring module and the electric winch (310); the monitoring module includes a weight sensor for detecting the load mass of the transfer box (320) and a tension sensor for detecting the tension of the transfer cable (340); the microcontroller of the intelligent control system dynamically adjusts the output of the electric winch (310) based on the load mass m, calculates the cable safety factor based on the tension, and uses it as a safety condition criterion for safety monitoring.

2. The high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 1, characterized in that: The microcontroller dynamically adjusts the output of the electric winch (310) based on the load mass m of the transfer box, so that its expected output torque T is determined according to the following formula: Configure and dynamically adjust; Where g is the acceleration due to gravity; r is the radius of the winch drum; and a is the preset acceleration value of the transfer box. The equivalent frictional resistance of the system is determined experimentally. The microcontroller adaptively controls the winch's output torque T by using different preset acceleration values ​​'a' at different stages of the tool transfer process, combined with the real-time load mass 'm'. This achieves the desired operation effect of heavy-load low-speed and light-load high-speed while ensuring smooth lifting and safety. The preset acceleration value 'a' includes the acceleration value during the start-up acceleration phase. During the uniform velocity phase (a=0) and the deceleration / braking phase... .

3. The high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 2, characterized in that: The microcontroller is also used to run the cable health status and anti-sway control model. Specifically, the microcontroller calculates the cable safety factor based on the cable tension, which serves as the basis for determining the safe operating condition for safety monitoring. The calculation formula is as follows: ， in, The rated breaking strength of the cable. For real-time tension measurement; when When the value is below the preset threshold, the intelligent control system issues an early warning or causes the winch to operate at a lower speed. By monitoring the periodic fluctuations in tension caused by the swing of the cable, the intelligent control system actively suppresses the swing amplitude of the transfer box by introducing short-duration acceleration or deceleration control during the lifting and lowering of the transfer box. The device also includes a status monitoring and transmission system, which includes a camera for collecting images of the work site environment and an Internet of Things module for wirelessly transmitting the images, the load mass, and the cable safety factor information to a remote monitoring center. The microcontroller quantifies the overall safety status of the device based on a comprehensive evaluation function S, and triggers a comprehensive alarm when S exceeds a safety threshold. The comprehensive evaluation function is: Where w1, w2, and w3 are weighting coefficients. For maximum design load, Other alarm indication values; When S exceeds the safety threshold, the intelligent control system executes the safety policy.

4. The high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 1, characterized in that: The supporting mechanism includes a main frame (110) and at least one set of clamping components (120) disposed on the main frame (110); The safety protection mechanism includes a guardrail (210) that can be unfolded and retracted, and a safety net (220) installed on the guardrail (210); The tool transfer mechanism is equipped with multiple sets of guide pulleys (330) at the guardrail (210).

5. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The clamping assembly (120) includes a fixed clamping block (121) fixedly connected to the main frame (110), a movable clamping block (122) disposed opposite to the fixed clamping block (121), and a locking drive unit that drives the movable clamping block (122) to move linearly. The operation of the locking drive unit enables the movable clamping block (122) and the fixed clamping block (121) to work together. The locking drive unit is a locking screw (123), and the movable clamping block (122) is provided with a threaded hole that mates with the locking screw (123).

6. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The guardrail (210) is connected to the main frame (110) by a hinge. When it is flipped outward to a vertical state, it is in the enclosure mode. When it is flipped inward to a horizontal state, it is in the folded and retracted mode. The safety net (220) is installed on the top of the guardrail (210) through an elastic rewinding mechanism. When the safety net is pulled down, it can cover the space below the guardrail (210). The elastic rewinding mechanism is a net roll (230) with a built-in torsion spring. The free end of the safety net (220) is provided with a locking element for locking it at different heights on the guardrail (210). The net roll (230) is also provided with a damper for controlling the rewinding speed of the safety net (220).

7. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The tool transfer mechanism (300) further includes a tool fixing unit disposed in the transfer box (320), the tool fixing unit including a grid (321) for inserting tools and a magnetic seat (322) for adsorbing metal tools; The main frame (110) is made of high-strength aluminum alloy and adopts a modular design. Its various parts are assembled by standardized quick connectors. The main frame (110) is also equipped with a hanging ring for attaching a safety belt and a sealed box for storing emergency supplies.

8. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The controller (350) is a wireless remote controller. The device is also provided with a receiving module for communicating with the wireless remote controller. The receiving module also includes a communication module (360) integrated on the device. The communication module (360) is a full-duplex intercom system, which includes a host unit located on the main frame (110) and portable auxiliary units for use by ground personnel and high-altitude workers respectively.

9. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The deployment of the device includes the following steps; Step 1: Installation and fixing of the load-bearing mechanism: First, the ground personnel assemble the modular main frame using quick-connect fittings; then, the device is hoisted to the predetermined working height, so that the angle steel of the tower's angle steel crossarm is positioned between the fixed clamping block and the movable clamping block of the clamping assembly. Subsequently, the workers used a wrench to turn the locking screw. The movable clamping block has a threaded hole that mates with the locking screw. By turning the screw, the movable clamping block is driven to move linearly toward the fixed clamping block. As the screw is continuously tightened, the movable clamping block and the fixed clamping block clamp the two sides of the angle steel. The hanging ring on the main frame is used to hook the workers' secondary safety belts. Step 2, Deployment and Use of Safety Protection Mechanism: After the device is securely fixed, the operator pulls down the pull ring at the end of the safety net. The safety net is pulled out from the net roll hidden in the top crossbar of the guardrail; the net roll provides a rewinding force with its internal torsion spring, and the safety net (220) is pulled down to completely cover the gap between the platform and the guardrail to effectively prevent personnel or tools from falling from the area. The locking pins (231) on the edge of the safety net are inserted into the corresponding pin holes on the side wall of the main frame to fix it in this protective state. After the operation is completed, the locking pins (231) are pulled out, and the safety net (220) is rolled back into the net roll (230) under the action of the elastic force. Then the guardrail (210) is folded back onto the main frame platform for easy storage and transportation. The guardrail is set around the bearing mechanism.

10. A special high-altitude operation safety protection and tool transfer device for power transmission and transformation equipment according to claim 4, characterized in that: The use of the tool transfer mechanism of the device includes the following steps: Ground preparation: Ground personnel put the tools and parts required for this operation into the transfer box (320), use the tools in the box to fix the grid (321), insert the long tools into the grid; use the magnetic tool holder (322) to attract and fix the metal tools; Lifting command: Ground personnel issue an "ascend" command via a handheld wireless controller (350); the electric winch (310) starts and retrieves the transfer cable (340). The cable, guided by the guide pulley (330), smoothly lifts the transfer box (320) to the high-altitude work point. High-altitude retrieval: Workers at height retrieve the necessary tools from the passbox; Return and Retransfer: The worker at height places the replaced tools or disassembled old parts into the empty container of the transfer box and sends a "descend" command via a handheld wireless controller to send the transfer box back to the ground. This cycle continues until the job is completed. The tool transfer mechanism integrates a monitoring module and a tension sensor. The weight sensor monitors the load of the transfer box in real time. If overloaded, it automatically stops the winch and sounds an alarm to prevent the equipment from operating under overload conditions. The tension sensor monitors the slack of the cable to prevent loose ropes from tangling. Work completion and device recovery: After all the work is completed, repeat the reverse process of the above operation: retrieve all tools into the transfer box and send them to the ground; put away the safety net and fold the guardrail; finally, loosen the locking screws (123) of each clamping component (120) to separate the device from the tower crossarm.

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