Safety detection equipment for electric power engineering

Abstract

The application belongs to the technical field of electric power engineering, and particularly relates to a safety detection equipment for electric power engineering, which comprises a mobile chassis, mobile wheels arranged in an array on the lower wall of the mobile chassis, a scissor type lifting platform movably arranged above the mobile chassis, a detection operation assembly slidably arranged on the upper front side of the scissor type lifting platform, and a folding ladder assembly movably arranged on the rear side of the scissor type lifting platform; and a power supply unit and a data processing host are arranged in the mobile chassis. The safety detection equipment for electric power engineering integrates the core functions of electrician instruments such as electric power load detection, electric parameter collection and analysis, and data interaction transmission on the basis of retaining the core structures such as safety protection, lifting operation, and convenient part taking, realizes the integration of safety protection, on-site detection, and data linkage, can be matched with an electric power load control system to carry out detection operation, and simultaneously improves the safety, automation, and intelligent level of detection operation.

Description

Technical Field

[0001] This invention belongs to the field of power engineering technology, specifically referring to a safety detection device for power engineering. Background Technology

[0002] With social development, the electricity load of the whole society continues to grow. In order to ensure the safe and stable transmission of electricity, operation and maintenance personnel need to conduct safety inspections on power distribution lines regularly to ensure the safety, economy and reliability of power equipment operation. Special power safety inspection equipment is required when carrying out power distribution line inspections.

[0003] Existing power testing equipment has several shortcomings when used in the field: First, line inspection work is mostly done in live-line scenarios, and existing inspection equipment lacks an isolated electric shock protection structure for workers. When the line is in a faulty state such as aging or damaged insulation, workers holding the inspection equipment are directly exposed to the live environment; even if they wear insulated protective clothing and gloves, there is still a risk of electric shock relying solely on personal protective equipment. Secondly, the testing process requires frequent replacement of tools such as probes, test leads, and sensors. Existing solutions often use waist-mounted tool bags to store accessories, which is time-consuming and laborious, easily distracts the operator, and reduces testing efficiency. Third, for high-altitude power line inspection work, lifting platforms are commonly used. However, existing lifting platforms lack a matching, interconnected access structure, requiring workers to climb the platform by hand, which increases the risk of collisions, falls, and other safety accidents. Therefore, there is an urgent need to develop a safety testing device for power engineering to address the aforementioned technical deficiencies in existing power testing equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a safety testing device for power engineering. While retaining core structures such as safety protection, lifting operations, and convenient component retrieval, this device integrates core electrical instrument functions such as power load detection, electrical parameter acquisition and analysis, and data interaction and transmission. It achieves integrated safety protection, on-site testing, and data linkage, and can be used in conjunction with a power load control system to carry out testing operations, while improving the safety, automation, and intelligence of the testing operations.

[0005] The technical solution adopted in this solution is as follows: This solution proposes a safety testing equipment for power engineering, including a mobile chassis. The lower wall of the mobile chassis is equipped with an array of moving wheels, and a scissor lift platform is movably installed above the mobile chassis. A testing operation component is slidably installed on the front side of the upper part of the scissor lift platform, and a folding step component is movably installed on the rear side. The mobile chassis is equipped with a power supply unit and a data processing host, which provide power supply and data processing support for the testing function module.

[0006] The scissor lift platform includes a scissor lift frame, an operating platform, a protective plate, and guardrails. A lifting electric actuator is located at the center of the upper wall of the movable chassis, with its output end rotatably connected to the stable coupling of the scissor lift frame, enabling the lifting and adjustment of the operating platform to meet the testing needs of power distribution lines at different heights. The testing operation components include a protective cover, an observation window, an arm placement port, and a tool placement tray. It also integrates a power load detection module, an electrical parameter acquisition and analysis module, and a data interaction module. The protective cover slides in conjunction with the sliding groove of the protective plate via a slider. A telescopic extension mechanism is connected to the outside of the arm placement port. The tube and insulating gloves, along with the tool placement tray, are connected to the protective cover via a rotating shaft. The tray can rotate and slide horizontally with the protective cover, linking instrument accessory storage with testing operations. The folding step assembly includes a folding scissor arm, steps, a first control arm, a second control arm, a control worm gear, a control worm, a control gear, and a control rack. The lower end of the control rack is fixed to a movable chassis. When the scissor lift platform is raised or lowered, the control gear and control rack mesh to drive the folding scissor arm through the worm gear, the first control arm, and the second control arm, thereby achieving automatic folding and unfolding of the steps and improving the automation level of the equipment.

[0007] Furthermore, the power load detection module includes industrial-grade current and voltage transformers and a load rate acquisition chip; the electrical parameter acquisition and analysis module integrates an energy-saving detection algorithm unit and an over-limit audible and visual alarm unit; the data interaction module includes a 4G / 5G / LoRa wireless transmission unit, an RS485 wired interface, and a USB data export interface, and is compatible with Modbus and 104 power system communication protocols.

[0008] Furthermore, the scissor lift frame is symmetrically equipped with lifting scissor arms, with the beginning, end, and middle sections of the lifting scissor arms rotatably connected. A stable connecting shaft is rotatably located at the connection point of the lifting scissor arms. The scissor lift frame has a fixed hinge shaft on one side and a sliding hinge shaft on the other side. The movable chassis has a lower hinge support and a lower strip groove. The operating platform has an upper hinge support and an upper strip groove. The fixed hinge shaft is rotatably connected to the hinge support, and the sliding hinge shaft is slidably engaged with the strip groove to ensure the stability of the scissor lift platform.

[0009] Furthermore, the protective plate has a through groove running through its side wall, and a tool placement tray is slidably placed in the through groove. Below the through groove is a tool placement box fixed to the protective plate. The tool placement tray has a dedicated slot for instrument accessories and a probe charging interface. The slot has an elastic fixing component, which can store accessories such as detection probes, energy-saving detection sensors, and insulating test leads, so as to realize convenient storage and on-site charging of instrument accessories.

[0010] Furthermore, a sliding door is slidably installed on the side wall opposite to the guardrail and the guard plate. The sliding door is arranged opposite to the folding step assembly, which facilitates the inspection personnel to go up and down the operating platform via the folding step. A solar auxiliary charging panel is fixed to the top of the guardrail and electrically connected to the power supply unit to realize multiple power supply methods.

[0011] Furthermore, the folding scissor arms are symmetrically arrayed on the left and right side walls of the steps, with their upper, middle, and lower ends rotatably positioned at the front end of the side wall of the corresponding step, the middle of the side wall of the adjacent step, and the rear end of the side wall of the step below, respectively. One end of the first control arm is rotatably connected to the middle of the side wall of the uppermost folding scissor arm, and the other end is rotatably connected to one end of the second control arm. The other end of the second control arm is located on the side wall of the rotating connecting rod. One end of the rotating connecting rod is provided with a control worm gear that meshes with the control worm. The outer end of the control worm is provided with a control gear.

[0012] Furthermore, the control rack has teeth only on the upper end near the side wall of the control gear. When the scissor lift platform rises to the preset height, the control gear and the control rack disengage, and the control worm gear and the control worm form a self-locking mechanism, keeping the steps in a folded state, reducing the space occupied by the equipment, and improving the stability of the operating platform.

[0013] Furthermore, a touch-sensitive main control panel is embedded in the inner wall of the protective cover. The main control panel is electrically connected to the power load detection module and the electrical parameter acquisition and analysis module. The testing personnel can operate the touch screen inside the protective cover using insulated gloves to realize functions such as setting detection parameters, real-time data display, and alarm threshold setting. The main control panel adopts an insulated and waterproof design with a protection level of IP65.

[0014] Furthermore, the power supply unit includes a rechargeable lithium battery pack and a mains charging interface; all electrical detection components adopt an IP65 waterproof and dustproof design, and the current transformers and detection probes adopt high-temperature resistant insulating shells with a temperature resistance of ≥120℃, which are suitable for harsh working conditions at power engineering sites.

[0015] Furthermore, the fingertips of the insulating gloves are made of conductive silicone.

[0016] The beneficial effects achieved by this solution using the above structure are as follows: 1. By setting up a horizontally sliding protective cover, the testing personnel can be inside the protective cover, with their arms passing through the armrest openings and their hands inside the insulating gloves. They can then observe the detailed condition of the power distribution lines through the observation window. The protective cover and insulating gloves are made of insulating materials, which achieves the effect of protecting the testing personnel from the risk of electric shock. 2. Tools required for the testing process are placed in the tool placement tray located under the insulating gloves. The testing personnel can see the tools in the tool placement tray through the observation window. The tool placement tray can slide together with the protective cover. At the same time, multiple tools can be placed in the tool placement tray. The testing personnel can change the testing tools by rotating the tool placement tray. 3. The folding step assembly allows inspectors to easily get on and off the operating platform. At the same time, the folding scissor arm and the steps together form a foldable structure, and the automatic folding and unfolding of the steps is achieved through the first control arm, the second control arm, the control worm gear, the control worm, the control gear, and the control rack. 4. The control worm gear and control worm together constitute the worm gear mechanism. When the scissor lift platform rises to a higher height, the control gear disengages from the control rack. At this time, the control worm gear and control worm self-lock, and the control worm gear is locked and does not rotate, so that the steps are always in a folded state, reducing the overall space occupied by the equipment and increasing the stability of the operating platform. Only when the scissor lift platform descends to the point where the control gear and control rack mesh and rotate, does the control worm gear rotate and cause the steps to unfold. That is, the steps only automatically extend when the scissor lift platform descends close to the ground, making it convenient for inspection personnel to get on and off the operating platform, and increasing the linkage and automation level of the equipment. 5. The scissor lift platform can lift and lower the inspection personnel, making it convenient for them to inspect power lines at higher positions; 6. Equipped with audible and visual alarm function for exceeding standards, the electrical parameter acquisition and analysis module can preset alarm thresholds for parameters such as load rate, harmonic content, and line loss rate. When the standard is exceeded, the main control panel will immediately issue an audible and visual alarm to remind the testing personnel to deal with it in time, thereby improving the timeliness and effectiveness of the test. 7. It integrates the core functions of power load detection and energy-saving monitoring, and can collect power load parameters such as voltage, current and load rate of distribution lines in real time. At the same time, it calculates energy consumption index, line loss rate and other energy-saving detection parameters, and has the supporting detection attributes of power load control system. Attached Figure Description

[0017] Figure 1 A front structural schematic diagram of a safety detection device for power engineering proposed in this invention; Figure 2 A schematic diagram of the back structure of a safety detection device for power engineering proposed in this invention; Figure 3 A schematic diagram of the connection structure between the scissor lift frame and the lifting electric actuator; Figure 4 A side sectional view of the connection between the protective cover, slider, tool tray and protective plate; Figure 5 A schematic diagram of the structure of the detection operation component; Figure 6 for Figure 2 A magnified view of a section at point A in the middle; Figure 7 This is a schematic diagram of the connection structure of the second control arm, control worm gear, control worm, control gear, and control rack.

[0018] Among them, 1. Mobile chassis, 11. Casters, 12. Lifting electric actuator, 13. Lower hinge support, 14. Lower strip groove; 2. Scissor lift platform, 21. Scissor lift frame, 211. Lifting scissor arm, 212. Stabilizing coupling, 213. Fixed hinge shaft, 214. Sliding hinge shaft, 22. Operating platform, 23. Protective plate, 231. Sliding groove, 232. Tool storage box, 233. Through groove, 24. Guardrail, 241. Sliding door, 25. Upper hinge support. 26. Support seat, upper strip groove, 3. Detection operation component, 31. Protective cover, 311. Slider, 32. Observation window, 33. Arm placement port, 331. Telescopic tube, 332. Insulating glove, 34. Tool placement tray, 341. Rotating shaft, 4. Folding step assembly, 41. Folding scissor arm, 42. Step, 43. First control arm, 44. Second control arm, 441. Rotating linkage, 442. Control worm gear, 45. Control worm, 451. Control gear, 46. Control rack.

[0019] The accompanying drawings are provided to further understand the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0020] The technical solutions in the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without creative effort are within the scope of protection of the invention.

[0021] like Figures 1-7 As shown in this embodiment, a safety testing device for power engineering includes a mobile chassis 1, a scissor lift platform 2, a testing operation component 3, and a folding step component 4. The scissor lift platform 2 is movably mounted above the mobile chassis 1. The testing operation component 3 is slidably mounted on the upper front side of the scissor lift platform 2. The folding step component 4 is movably mounted on the rear side of the scissor lift platform 2. A power supply unit and a data processing host are fixedly installed inside the mobile chassis 1. The power supply unit provides stable power to the testing module and power component of the entire instrument. The data processing host completes the screening, sorting, and storage of the testing data. Moving wheels 11 are evenly distributed in an array on the lower wall of the mobile chassis 1. The moving wheels 11 are universal wheels with brakes.

[0022] The upper wall of the mobile chassis 1 is fixedly provided with a lifting electric push rod 12, which is an electric hydraulic push rod; a lower end hinge support seat 13 is symmetrically fixed on one side edge of the upper wall of the mobile chassis 1, and a lower end strip groove 14 is symmetrically opened on the side of the upper wall of the mobile chassis 1 away from the lower end hinge support seat 13.

[0023] The power supply unit is embedded in the left side of the mobile chassis 1 and includes a rechargeable lithium battery pack to meet the needs of continuous testing operations in outdoor scenarios without mains power. The mains power charging interface is located on the outer wall of the mobile chassis 1, which can enable the equipment to be powered on the spot. The data processing host is embedded in the right side of the mobile chassis 1 and uses an ARM Cortex-A7 embedded processor. It is electrically connected to the subsequent testing module to complete the preliminary processing and storage of data. The scissor lift platform 2 includes a scissor lift frame 21, an operating platform 22, a protective plate 23, and a guardrail 24. The scissor lift frame 21 is movably mounted on the upper wall of the mobile chassis 1. The lifting electric push rod 12 is located inside the scissor lift frame 21. The operating platform 22 is fixedly mounted on the upper end of the scissor lift frame 21. The operating platform 22 is made of insulated and non-slip steel plate to meet the needs of single-person testing operation. The protective plate 23 is vertically fixed on the front edge of the upper wall of the operating platform 22. The guardrail 24 is vertically fixed on the left, right, and rear edges of the upper wall of the operating platform 22. Both the protective plate 23 and the guardrail 24 are made of insulated plastic material.

[0024] The upper wall of the protective plate 23 is inlaid with a sliding groove 231, and the side wall of the protective plate 23 is through-grooved with a through groove 233. A tool placement box 232 is fixedly installed below the through groove 233. The tool placement box 232 is welded to the side wall of the protective plate 23 and is used to store spare test pens, insulating tape and other auxiliary test accessories. A sliding door 241 is slidably installed on the side wall of the guardrail 24 opposite to the protective plate 23. The sliding door 241 is opposite to the folding step assembly 4. The sliding door 241 is connected to the guardrail 24 through a slide rail and can be opened and closed by sliding up and down, which facilitates the inspection personnel to go up and down the operating platform 22 through the folding step assembly 4. A solar auxiliary charging panel is fixedly laid on the top of the guardrail 24. The solar auxiliary charging panel is made of monocrystalline silicon material and has a power of 50W. It is electrically connected to the power supply unit and can realize outdoor solar power supplementation to extend the equipment's battery life.

[0025] The scissor lift frame 21 includes lifting scissor arms 211 and stabilizing couplings 212. The lifting scissor arms 211 are symmetrically arranged on the upper wall of the mobile chassis 1, with the beginning, end and middle parts respectively hinged by pins. The stabilizing couplings 212 are rotatably located at the middle connection of the lifting scissor arms 211 through bearings. The output end of the lifting electric push rod 12 is rotatably connected to one of the stabilizing couplings 212 through a universal joint. The extension and retraction of the lifting electric push rod 12 pushes the stabilizing couplings 212 to move, thereby realizing the expansion and contraction of the lifting scissor arms 211, and thus driving the operating platform 22 to rise and fall.

[0026] The scissor lift frame 21 has a fixed hinge shaft 213 symmetrically fixed at its lower and upper ends on one side, and a sliding hinge shaft 214 symmetrically fixed at its lower and upper ends on the other side. The lower wall of the operating platform 22 has an upper hinge support 25 symmetrically fixed on one edge, and an upper strip groove 26 symmetrically formed on the lower edge of the operating platform 22 away from the upper hinge support 25. The fixed hinge shaft 213 is rotatably mounted on the upper hinge support 25 via a bearing. On the side wall of 5, the upper sliding hinge shaft 214 is slidably mounted in the upper strip groove 26 via a slider, and the lower fixed hinge shaft 213 is rotatably mounted on the side wall of the lower hinge support seat 13 via a bearing, and the lower sliding hinge shaft 214 is slidably mounted in the lower strip groove 14 via a slider. Through the rotational cooperation between the fixed hinge shaft 213 and the hinge support seat, and the sliding cooperation between the sliding hinge shaft 214 and the strip groove, the stability and smoothness of the lifting process of the scissor fork lifting frame 21 are ensured.

[0027] The detection operation component 3 is the core detection and operation unit of the equipment, including a protective cover 31, an observation window 32, an arm placement port 33, and a tool placement tray 34. It also integrates a power load detection module, an electrical parameter acquisition and analysis module, and a data interaction module. The protective cover 31 is slidably mounted on the upper wall of the protective plate 23 via a slider 311. The observation window 32 is embedded in the middle of the front side wall of the protective cover 31. The arm placement port 33 is symmetrically located below the observation window 32, penetrating the front side wall of the protective cover 31, and is adapted for operation by the testing personnel with both hands. The tool placement tray 34 is rotatably mounted below the protective cover 31 via a rotating shaft 341. The tool placement tray 34 is slidably mounted in the through groove 233 and can slide horizontally with the protective cover 31. It can also rotate around the rotating shaft, making it convenient for the testing personnel to access the accessories.

[0028] The protective cover 31 is made of high-strength insulating plastic and has an overall closed cavity structure. A touch-sensitive main control panel is embedded and fixed in the inner wall (below the observation window 32 and above the arm placement port 33). The main control panel uses a 7-inch capacitive touch screen and is electrically connected to the power load detection module and the electrical parameter acquisition and analysis module. The testing personnel can directly operate the device through the insulated gloves inside the protective cover 31 to realize functions such as setting detection parameters, real-time display of detection data, setting alarm thresholds, and issuing data export commands. The observation window 32 is made of insulated transparent tempered glass, which is convenient for the testing personnel to observe the detection points of the power distribution line, and also has impact resistance and insulation performance. The outside of the arm placement port 33 is connected to a telescopic tube 331 through a flange. The telescopic tube 331 is a telescopic corrugated insulating rubber tube to adapt to the operating distance requirements of different testing personnel. An insulating glove 332 is fixedly connected to the outside of the telescopic tube 331. The insulating glove 332 is made of insulating rubber as the main material.

[0029] The power load detection module is fixed inside the lower side of the protective cover 31 by bolts. The core components include an industrial-grade voltage transformer, a high-precision load rate acquisition chip (model ADS1256), and a harmonic analysis unit. The detection probe is led out from the side wall of the protective cover 31 through a high-temperature resistant insulated wire and extends into a special slot in the tool placement tray 34. It can collect core power load parameters such as three-phase voltage, three-phase current, active or reactive power, and power load rate of the power distribution line in real time.

[0030] The electrical parameter acquisition and analysis module is electrically connected to the power load detection module via a circuit board. It integrates an energy-saving detection algorithm unit and an over-limit audible and visual alarm unit. The energy-saving detection algorithm unit has built-in calculation models for line loss rate, power factor, and energy consumption indicators. It can perform real-time analysis on the raw data collected by the power load detection module and automatically calculate the core energy-saving detection parameters such as line loss rate, power factor, and energy consumption per unit time of the power distribution line. The over-limit audible and visual alarm unit includes a red warning light and a buzzer. When the detected power load rate, harmonic content, or line loss rate exceeds the preset threshold on the main control panel, the warning light stays on and the buzzer sounds an alarm to remind the inspection personnel to deal with it in time.

[0031] The data interaction module includes a 4G / 5G / LoRa wireless transmission unit, an RS485 wired interface, and a USB 3.0 data export interface. The wireless transmission unit is embedded in the outer wall of the protective cover 31, while the RS485 wired interface and the USB 3.0 data export interface are both located on the outer wall of the mobile chassis 1. The data interaction module is electrically connected to the data processing host and is compatible with mainstream power system communication protocols such as Modbus and IEC104. It can upload the detection data to the power load control system backend in real time, and also supports network detection with other electrical instruments through the RS485 interface and local export and archiving of detection data through the USB interface.

[0032] The tool placement tray 34 is made of insulating plastic, has a circular structure, and a diameter of 40cm. The tray surface has multiple dedicated slots for instrument accessories and probe charging interfaces, which are arranged in a ring array. The slots are equipped with elastic rubber fasteners, which can hold instrument accessories such as power load detection probes, energy-saving detection sensors, and insulation detection probes to prevent the accessories from slipping during the detection process.

[0033] The folding step assembly 4 includes a folding scissor arm 41, a step 42, a first control arm 43, a second control arm 44, a control worm gear 442, a control worm 45, a control gear 451, and a control rack 46. The step 42 is made of insulating and non-slip plastic plate and is linearly arrayed on the rear side of the scissor lift platform 2. The uppermost step 42 is welded to the middle of the side wall of the operating platform 22.

[0034] The folding scissor arms 41 are symmetrically arranged on the left and right side walls of the steps 42. They are made of high-strength alloy steel. Their upper, middle and lower ends are respectively hinged to the front end of the side wall of the corresponding step 42, the middle of the side wall of the adjacent step 42, and the rear end of the side wall of the step 42 below. The steps 42 can be folded and unfolded by unfolding and retracting the folding scissor arms 41.

[0035] One end of the first control arm 43 is rotatably connected to the middle of the side wall of the uppermost folding scissor arm 41 via a pin, and the other end is rotatably connected to one end of the second control arm 44 via a pin. The other end of the second control arm 44 is welded to the side wall of the rotating connecting rod 441. The rotating connecting rod 441 is rotatably mounted on the lower wall of the uppermost step 42 via a bearing. One end of the rotating connecting rod 441 is fixed with a control worm gear 442 via a flat key. A control worm 45 is meshed and rotatably mounted below the control worm gear 442. The control worm 45 is rotatably mounted on the lower wall of the operating platform 22 via a bearing. The outer end of the control worm 45 is fixed with a control gear 451 via a flat key. The control rack 46 is vertically welded to the side wall of the movable chassis 1 and matches the control gear 451. The control rack 46 has teeth only on the upper end near the side wall of the control gear 451. The length of the teeth is adapted to the minimum lifting stroke of the scissor lift platform 2.

[0036] During the descent of the scissor lift platform 2, the control gear 451 meshes with the upper section of the control rack 46, synchronously driving the control worm 45, control worm wheel 442, and rotating connecting rod 441 to rotate. The second control arm 44 pushes the first control arm 43 outward, and the first control arm 43 pulls the folding scissor arm 41 to unfold, with the steps 42 extending synchronously to form a passageway. During the lifting of the scissor lift platform 2, the control gear 451 meshes in the opposite direction, driving the worm wheel to rotate in the opposite direction. The second control arm 44 pulls the first control arm 43 inward, the folding scissor arm 41 retracts, and the steps 42 fold and retract. When the scissor lift platform 2 rises to the preset working height, the control gear 451 disengages from the control rack 46. Relying on the self-locking characteristic of the worm wheel, the transmission structure automatically locks, and the steps 42 remain in the folded and retracted state, eliminating the need for additional locking parts, reducing the space occupied by the equipment, and improving the operational stability of the lift platform.

[0037] The specific implementation method of this embodiment is as follows: the operator pushes the equipment directly under the power distribution line to be tested, locks the moving wheel 11 to brake and completes the equipment positioning and fixing, and places accessories such as load detection probe and energy-saving detection sensor into the corresponding slots of tool placement tray 34. At this time, the scissor lift platform 2 is at the lowest initial height and the folding step assembly 4 steps 42 are fully unfolded. The operator slides upward to open the guardrail 24 and sliding door 241, then climbs onto the operating platform 22 via the unfolded steps 42, and slides downward to close the sliding door 241 after climbing onto the platform; The operator enters the enclosed cavity of the protective cover 31, extends both arms through the arm placement openings 33 into the insulating gloves 332, and touches the main control panel inside the protective cover through the conductive silicone layer of the glove fingertips to activate the power load detection module and the electrical parameter acquisition and analysis module. Based on the rated parameters of the line under test, the operator configures the alarm thresholds for load rate, harmonics, and line loss rate on the panel and selects the data transmission mode (wireless remote upload / local storage). The operator issues a lifting command via the main control panel, causing the lifting electric actuator 12 to extend and drive the scissor lift frame 21 to unfold, simultaneously raising the operating platform 22 and the detection operation component 3. During the platform lifting process, the control gear 451 rotates in the opposite direction along the control rack 46, causing the folding scissor arm 41 to retract and the step 42 to fold automatically. After the platform rises to the preset height of the line detection point, the lifting electric actuator 12 stops. At this time, the control gear 451 disengages from the rack teeth, and the worm gear locks the step. The operator can then horizontally push and pull the protective cover 31, adjust the lateral detection position along the sliding groove 231 of the protective plate, rotate the tool placement disc 34 to retrieve the corresponding detection probe, and contact the power distribution line under test to collect parameters. The power load detection module collects raw data of line voltage, current, and load rate in real time through instrument transformers and transmits them to the power parameter acquisition and analysis module. The algorithm unit calculates line loss rate, power factor, and time period energy consumption index in real time. All data is displayed on the main control panel in real time. The detection data is also uploaded to the power load monitoring system server through the wireless unit of the data interaction module. If the measured parameters exceed the preset alarm threshold, the warning light and buzzer of the protective cover will trigger an audible and visual alarm. Operators can record the alarm points through the main control panel and conduct targeted retests. After a single-point inspection is completed, the operator puts the probe back into the tool placement tray 34 slot, shuts down all inspection modules through the main control panel, exports local inspection data for archiving as needed via the USB 3.0 interface, and issues a descent control command. The lifting electric push rod 12 retracts, causing the operating platform 22 to descend slowly. When the platform reaches the lowest position, the control gear 451 and control rack 46 re-engage, triggering the deployment of the step 42. After the platform is fully on the ground, the operator slides to open the sliding door 241 and walks down the operating platform via the step 42, completing the entire inspection process.

[0038] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0039] The invention and its embodiments have been described above. This description is not restrictive, and the figures shown are only one embodiment of the invention; the actual structure is not limited to this. In conclusion, if a person skilled in the art, inspired by this description, designs a similar structure and embodiment without departing from the spirit of the invention, such design should fall within the scope of protection of the invention.

Claims

1. A safety inspection device for power engineering, comprising a mobile chassis, with an array of casters arranged on the lower wall of the mobile chassis; characterized in that: The mobile chassis is equipped with a power supply unit and a data processing host. A scissor lift platform is movably installed on the top of the mobile chassis. A detection and operation component is slidably installed on the front side of the upper part of the scissor lift platform, and a folding step component is movably installed on the rear side. The scissor lift platform includes a scissor lift frame, an operating platform, a protective plate, and protective railings. A lifting electric push rod is installed at the center of the upper wall of the mobile chassis, and its output end is rotatably connected to the stable coupling of the scissor lift frame. The detection operation components include a protective cover, an observation window, an arm placement port, and a tool placement tray. It also integrates a power load detection module, an electrical parameter acquisition and analysis module, and a data interaction module. The protective cover slides with the sliding groove of the protective plate through a slider. The outside of the arm placement port is connected to a telescopic tube and an insulating glove. The tool placement tray is connected to the protective cover via a rotating shaft, and can rotate and slide horizontally with the protective cover. The folding step assembly includes a folding scissor arm, steps, a first control arm, a second control arm, a control worm gear, a control worm, a control gear, and a control rack. The lower end of the control rack is fixed to a movable chassis. When the scissor lift platform is raised or lowered, the control gear meshes with the control rack to drive the folding scissor arm through the worm gear, the first control arm, and the second control arm to achieve automatic folding and unfolding of the steps. When the scissor lift platform rises to the preset height, the control gear and the control rack disengage. The control rack only has teeth on the upper end near the side wall of the control gear. The control worm gear and the control worm form a self-locking mechanism, maintaining the folded state.

2. The safety detection equipment for power engineering according to claim 1, characterized in that: The power load detection module includes industrial-grade current and voltage transformers and a load rate acquisition chip; the electrical parameter acquisition and analysis module integrates an energy-saving detection algorithm unit and an over-limit audible and visual alarm unit; the data interaction module includes a 4G / 5G / LoRa wireless transmission unit, an RS485 wired interface, and a USB data export interface, and is compatible with Modbus and 104 power system communication protocols.

3. The safety detection equipment for power engineering according to claim 1, characterized in that: The scissor lift frame is symmetrically equipped with lifting scissor arms, with the beginning, end, and middle sections of the lifting scissor arms rotatably connected. A stable connecting shaft is rotatably located at the connection point of the lifting scissor arms. The scissor lift frame has a fixed hinge shaft on one side and a sliding hinge shaft on the other side. The movable chassis has a lower hinge support and a lower strip groove. The operating platform has an upper hinge support and an upper strip groove. The fixed hinge shaft is rotatably connected to the hinge support, and the sliding hinge shaft is slidably engaged with the strip groove.

4. The safety detection equipment for power engineering according to claim 1, characterized in that: The protective plate has a through groove in its side wall, and the tool placement tray is slidably placed in the through groove. Below the through groove is a tool placement box fixed to the protective plate. The tool placement tray has a special slot for instrument accessories and a probe charging interface. The slot has an elastic fixing element.

5. A safety detection device for power engineering according to claim 1, characterized in that: A sliding door is slidably installed on the side wall opposite to the guardrail and the guard plate. The sliding door is arranged opposite to the folding step assembly, which facilitates the inspection personnel to go up and down the operating platform via the folding step. A solar auxiliary charging panel is fixed to the top of the guardrail and electrically connected to the power supply unit.

6. A safety detection device for power engineering according to claim 1, characterized in that: The folding scissor arms are symmetrically arrayed on the left and right side walls of the steps, with their upper, middle, and lower ends rotatably positioned at the front end of the side wall of the corresponding step, the middle of the side wall of the adjacent step, and the rear end of the side wall of the step below, respectively. One end of the first control arm is rotatably connected to the middle of the side wall of the uppermost folding scissor arm, and the other end is rotatably connected to one end of the second control arm. The other end of the second control arm is located on the side wall of the rotating connecting rod. One end of the rotating connecting rod is equipped with a control worm gear that meshes with the control worm. The outer end of the control worm is equipped with a control gear.

7. A safety detection device for power engineering according to claim 1, characterized in that: One end of the first control arm is rotatably connected to the middle of the side wall of the uppermost folding scissor arm, and the other end is rotatably connected to one end of the second control arm. The other end of the second control arm is located on the side wall of the rotating connecting rod. One end of the rotating connecting rod is provided with a control worm gear that meshes with the control worm. The outer end of the control worm is provided with a control gear.

8. A safety detection device for power engineering according to claim 1, characterized in that: The inner wall of the protective cover is embedded with a touch-sensitive main control panel, which is electrically connected to the power load detection module and the electrical parameter acquisition and analysis module.

9. A safety detection device for power engineering according to claim 1, characterized in that: The power supply unit includes a rechargeable lithium battery pack and an AC charging interface; all electrical detection components adopt an IP65 waterproof and dustproof design, and the current transformer and detection probe adopt a high-temperature resistant insulating shell with a temperature resistance of ≥120℃.

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