505 results about "Work safety" patented technology

The invention discloses a video analysis-based multi-scene operator violation behavior identification method and system, and belongs to the technical field of intelligent operation safety monitoring and artificial intelligence identification, and the method comprises the steps: collecting a real-time video stream of a multi-scene operation site; recognizing a continuous action time sequence in the real-time video stream by using an action recognition depth model; constructing the continuous action time sequence into an action behavior sequence; the action behavior sequence is constructed into a directed behavior graph with time, space and action labels, the directed behavior graph is compared with a directed behavior graph corresponding to the standard action behavior sequence, and illegal behaviors are recognized; and carrying out multi-mode early warning on the identified illegal behaviors. According to the method, the bottleneck that the traditional image recognition technology is weak in action sequence semantic understanding and poor in environmental adaptability is broken through, and accurate recognition and real-time early warning of illegal behaviors in multi-scene operation are achieved.

The invention discloses an intelligent manufacturing workstation safety control system oriented to man-machine cooperation, and belongs to the technical field of intelligent manufacturing and man-machine cooperation. The system comprises a multi-modal sensor array, a personnel state sensing module, a robot state monitoring module, a dynamic safety area adaptive calculation module, an intention prediction and risk assessment module, a cooperative control decision module and an execution feedback module. The dynamic safety area self-adaptive calculation module constructs geometric representation of a man-machine interaction space based on a topological manifold theory, and calculates a dynamic safety boundary in real time; the intention prediction and risk assessment module is fused with multi-source information to predict a future trajectory of a person and assess a collision risk; the cooperative control decision module performs multi-objective optimization with safety and efficiency as double objectives to generate an optimal adjustment strategy, the system realizes prospective safety control based on intention prediction, the cooperative efficiency is improved by 25%-45% on the premise of guaranteeing safety, and the working safety accident rate is reduced to be close to zero.

The invention belongs to the technical field of disc tool magazines, and particularly relates to a disc tool magazine tool reversing device which comprises a tool rest box, a rotating disc is rotationally arranged in the tool rest box and connected with a rotating motor, a tool outlet is formed in the bottom of the tool rest box, and mounting frames distributed in an annular array mode are arranged on the outer side of the circumference of the rotating disc. Sliding blocks are slidably connected to the two sides of the mounting frame in a limiting mode and slide in the radial direction of the rotary disc in a limiting mode, a tool sleeve structure is rotationally connected between the two sliding blocks through a torsional spring, a rotary driving mechanism and a pushing mechanism are arranged at the positions, corresponding to the tool outlets, of the tool rest box, and the rotary driving mechanism pushes the tool sleeve structure to rotate. And the pushing mechanism downwards pushes the sliding block and the knife pouch structure. When the tool pouch structure is in a horizontal placement state, the horizontal extension distance of the tool bit is reduced so as to reduce the movement range of the tool bit to ensure the working safety, and the distance of the tool bit extending out of the tool outlet is increased when the tool bit is taken.

The invention discloses a security and disinfection integrated big data platform regulation and control method based on artificial intelligence, and relates to the technical field of safety production and fire-fighting management, and the method comprises the steps: obtaining operation data and historical data, carrying out the standardization processing of the operation data, generating a training data set, training and constructing a deep convolutional neural network model, spatial correlation features are extracted through multilayer convolution operation, key state information is identified in combination with an attention mechanism, and a feature mapping matrix is generated; inputting the feature mapping matrix into a constructed safety evaluation model, calculating a safety risk index, and dividing risk levels according to the safety risk index; and generating an inspection task list according to a risk grade division result, and issuing the inspection task list to the mobile terminal for execution, thereby realizing dynamic regulation and control of the security risk. The technical bottlenecks of a traditional security and disinfection integrated platform in the aspects of data analysis, risk identification, management and control and the like are broken through, intellectualization and precision of security risk management are achieved, and the security management efficiency is improved.

The invention provides an intelligent supervision system and method for safety production liability insurance, and is applied to the technical field of supervision science and technology. The system comprises an enterprise port, an insurance institution port, a supervision department port and a background port, and integrates four modules: an automatic safety insurance data matching module synchronizes insurance buying information in real time and generates a supervision form; the safety production state monitoring module collects enterprise data to support risk assessment and provide accident prevention service; the accident prevention service evaluation module judges validity through data comparison before and after service and tracks and rectifies the data; and the data statistical analysis module realizes multi-dimensional query, dynamic ranking and visualization. According to the method, data collection, state monitoring, effect evaluation and rectification closed-loop management are realized through multi-port deployment, and a supervision mechanism of enterprise evaluation and supervision reward and punishment linkage is established. According to the invention, through cross-department data intercommunication, the problems of information isolated island and supervision lagging of the traditional responsibility insurance are effectively solved, and the supervision efficiency of the responsibility insurance is remarkably improved.

A helmet, which can, for instance, be a sports helmet or a work safety helmet, comprises a helmet body that comprises a solid foam of expanded foam particles, wherein the solid foam at least regionally has a varying hardness.

The invention provides a man-machine interaction safety dynamic early warning method based on digital twinning and behavior prediction, and the method comprises the steps: S1, collecting the real-time data of a working site through a sensing layer, and enabling the data to comprise the personnel position, equipment state and environment information; s2, constructing a digital twin model based on the acquired data, wherein the model maps the dynamic state of a working site in real time; s3, generating a personnel behavior track and an equipment action range through a prediction algorithm, and calculating a dynamic risk field to evaluate space-time conflicts; s4, according to the risk value of the dynamic risk field, triggering a multi-stage early warning mechanism to reduce the risk of the operation field; and S5, displaying the real-time state and risk information in the digital twinborn model through a visual interface. According to the invention, through deep fusion of digital twinning and dynamic risk prediction, real-time monitoring and accurate prevention and control of the safety risk of the operation site are realized, and the safety management efficiency and the operation safety are greatly improved.

The invention belongs to the technical field of aerial work auxiliary tools, and particularly discloses a tower climbing anti-falling device based on unmanned aerial vehicle auxiliary installation. The hanging assembly comprises a hanging frame butt joint unit and a hanging frame, and the hanging frame butt joint unit is in vertical sliding fit with the hanging frame. The hanging frame is horizontally matched with a shrinkage sliding block in a sliding mode, and a driving piece is arranged on the hanging frame. A locking device is connected to the contraction sliding block, and a locking strip is arranged on the hanging frame. The hanger butt joint unit is connected with a connecting piece, and the connecting piece is connected with a locking device; when the hanging frame butt joint unit slides upwards, the connecting piece drives the locking device and the locking strip to be unlocked, and at the moment, the connecting piece can drive the contraction sliding block to move to the starting point position. When the hanging frame butt-joint unit slides downwards and resets, the connecting piece drives the locking device and the locking strip to be locked, and at the moment, the driving piece can drive the contraction sliding block to move towards the terminal position. The anti-falling device can play an anti-falling role, and the operation safety is improved.

The invention discloses an aerial work platform intelligent supervision method and system based on data analysis. The method comprises the following steps: S1, collecting operation state data of an aerial work platform and behavior video stream data of an operator; s2, inputting a dynamic time warping network to carry out cross-modal time alignment, and outputting a key state feature sequence; s3, inputting the behavior video stream into a double-path Transform model, and generating an operation behavior representation sequence; s4, jointly modeling key state features and behavior characterization, and constructing a risk scoring function; s5, the risk scoring result is compared with a grade threshold value, an early warning mechanism is triggered, and a control instruction is generated; s6, executing platform control actions, such as speed limiting, descent, locking, pause and recording feedback; and S7, updating the model by taking the key state characteristics, the behavior characterization, the scoring result and the feedback as samples. According to the invention, intelligent identification and early warning of high-altitude operation states and behaviors are realized, and operation safety and supervision efficiency are improved.

This invention relates to a method and system for intelligent analysis of rooftop work behavior and foreign object detection in electric locomotives. The system includes maintenance personnel climbing onto the roof and inputting video stream data from a camera above the roof into a target detection module. The target detection module performs image preprocessing on the input video stream and then detects rooftop maintenance actions and safety ropes. Once the maintenance personnel are stationary, foreign object detection is performed on the roof. This invention assists operators of disconnecting switches in monitoring and analyzing the maintenance process on electric locomotive rooftops. It provides real-time monitoring and automatic alarms for work processes, actions, and tool status, reducing the risk of tool residue, standardizing work processes, and ensuring the safety of workers. This system represents a shift from traditional manual monitoring to intelligent and automated monitoring, providing strong technical support for rooftop work safety, tool management, and process traceability in electric locomotives.

The invention provides a supporting structure, an oven and a using method. The oven comprises an oven body, an oven door, an oven tray and the supporting structure, and the bottom of the oven door is rotationally connected to the bottom of an opening of the oven body; the supporting structure is installed on one side of the inner wall face of the box door. The supporting structure comprises a motor and a lead screw. The screw rod is rotationally erected and supported through a bearing seat; two threaded sections with opposite spiral directions are arranged on the lead screw, the threaded sections are sleeved with sliding sleeves, and push blocks are mounted on the top surfaces of the sliding sleeves; the sides, close to the center of the lead screw, of the push blocks are rotationally connected with supporting plates, and the ends of the two supporting plates are movably connected through a supporting plate. The lead screw is driven by a motor to drive the two sliding sleeves to move, and therefore the supporting plate is driven to ascend and descend. The baking tray dragging device can stably support a baking tray dragged to the outside, two hands can be released for intermediate operation, and efficiency and operation safety can be improved.

The push-pull type guardrail of the reversed loader comprises an overhead rail and a plurality of protective nets which are located below the overhead rail and can be folded and stretched, the heads and the tails of the protective nets are rotationally connected through hinges, and the middle portion of the top end of each protective net is provided with a moving assembly in rolling connection with the overhead rail through a U-shaped support. When the transfer machine runs, only the protective nets need to be pulled open, all the protective nets are unfolded to form a barrier, a warning board is hung on the protective nets, personnel entering an equipment operation area can be greatly reduced, a good warning effect is achieved, the protective nets are hung below the hanging rail, personnel carrying is not needed, and the safety of the transfer machine is improved. And the situation that the personnel deliberately move away and do not use is completely eradicated, the working safety environment is improved, and the habitual violation phenomenon of the personnel is reduced.

The invention provides a safety management and control method based on multi-source fusion safety helmet positioning and a related device, and relates to the technical field of operation safety management and control. Indoor and outdoor seamless positioning is realized through the multi-source positioning module, a grading alarm strategy is generated by combining behavior portraits with safety rule matching, the problems of positioning fault, risk identification lag and alarm extensibility of a traditional scheme are solved, and the method has the advantages of improving positioning reliability, enhancing risk perception real-time performance and reducing false alarm rate.

The invention relates to an engineering machinery remote control method and device based on the Internet of Things, equipment and a medium. The method comprises the following steps: acquiring multi-source data of a working site, and after preprocessing, separating key features by using an optimized support vector machine model to obtain a key feature set; based on the set, utilizing a deep neural network to fuse multi-source data to generate an integration state model, and synchronously and dynamically adjusting data acquisition frequency according to network bandwidth fluctuation to obtain a final integration state model; the transmission delay of the data is evaluated, semantic classification and compression are carried out on the optimized data, and a visual interface is generated after transmission analysis; and acquiring interface interaction data, converting the interface interaction data into a control instruction, calculating a signal parameter modification value, verifying control delay compliance, and finally generating remote control response data containing execution confirmation information. By adopting the method, the intelligent level and the operation safety of remote control of the engineering machinery are remarkably improved, and the labor and operation and maintenance cost is reduced.

The invention provides a fire operation safety management system, which belongs to the technical field of operation safety supervision and comprises an operation application unit, a measure confirmation unit, an operation examination and approval unit, a start confirmation unit, an operation implementation unit and an operation completion unit. The measure confirmation unit matches and confirms operation safety measures; the job approval unit matches an approval process including multi-stage approval and face recognition verification; the work starting confirmation unit verifies the tools, senses the environment and secondarily confirms gas monitoring; the operation implementation unit is linked with data to supervise the operation state; and the work completion unit guides acceptance, returns tools and the like and archives work tickets. The system has the beneficial effects that operation approval management is strengthened, an intelligent safety protection system of'full-chain control, whole-process trace reserving and full-risk pre-judgment 'is constructed by means of hardware auxiliary means such as field monitoring and personnel positioning, closed-loop management of an operation process is realized, and intrinsic safety transformation from an enterprise to active prevention is promoted.

A rapid peeling and rust removing device for a railway station building steel structure coating is integrally an annular body and comprises a first box body (1), a second box body (2), a holding mechanism (3), a climbing mechanism (4), a peeling mechanism (5) and a rust removing mechanism (6) which are arranged in the first box body (1) and the second box body (2), a pin shaft rotating pair (11) is arranged at the side end of the first box body (1), and a pin shaft embedding groove (21) is formed in the side end of the second box body (2). And the first box body (1) and the second box body (2) are locked and connected through the pin shaft rotating pair (11) and the pin shaft embedding groove (21). According to the rapid peeling and derusting device for the railway station building steel structure coating, the maintenance efficiency of the railway station steel structure coating can be guaranteed, work safety is guaranteed, and economic benefits and social benefits are remarkable.

This invention relates to the field of power work equipment technology, specifically a combined multi-functional live-line working insulated operating rod and its operating method. The operating rod includes a handle, a control rod fixedly connected to the top of the handle, an extension rod movably connected to the top of the control rod, and a tool connecting mechanism fixedly connected to the top of the outer wall of the extension rod. The control rod includes a control rod housing, a rotating rod rotatably connected to the inner wall of the control rod housing, and one end of the rotating rod extending to the outer wall of the control rod housing and fixedly connected to a handle. This invention, by incorporating a control rod, an extension rod, a tool connecting mechanism, and a small monitoring camera, achieves adjustable operating rod length through the cooperation of the control rod and the extension rod, meeting the needs of different working heights. Simultaneously, the design of the tool connecting mechanism makes tool replacement simple and quick, improving work efficiency, while the small monitoring camera enhances work safety.

The utility model provides a wide-range high-altitude operation safety belt attachment device which comprises four sets of positioning devices, positioning steel wire ropes and movable steel wire ropes, the four sets of positioning devices are fixed to the four corner points of the top face of a building respectively, and the two sets of positioning steel wire ropes are straightened and arranged in parallel. Four end points at two ends of the two groups of positioning steel wire ropes are respectively fixed on the four groups of positioning devices, and two ends of the movable steel wire rope are respectively lapped on the two groups of positioning steel wire ropes through movable clamping rings. Personal safety of high-altitude operation personnel is guaranteed, and construction time is shortened. Belongs to the civil engineering field.

The invention provides an extra-thick coal seam hydraulic support mechanism which comprises a base and a top beam, a plurality of first stand columns are rotationally arranged on the base, the top end of each first stand column is connected with the top beam, a shield beam is rotationally arranged at the tail end of the top beam, the shield beam is connected with the base through a connecting rod assembly, and side protection plates are rotationally arranged on the two sides of the top beam correspondingly. A side pushing jack is arranged between the bottom of the top beam and the inner side wall of the side protection plate, a front beam is rotationally arranged at the front end of the top beam, a front beam jack is arranged between the front beam and the bottom of the top beam, and a side protection device is arranged at the front end of the front beam and used for playing a shielding role during side caving. According to the hydraulic support mechanism for the extra-thick coal seam, loads can be transmitted, unbalance loading can be adapted, the structural stress is reduced, the mining efficiency is improved, and the working safety is improved.

The present invention discloses a post-weld heat treatment mold for a reducing tee pipe, which includes a heat treatment unit, the heat treatment unit including an upper shell and a lower shell, and a locking unit; the locking unit includes an upper lock shell and a lower lock shell, the upper lock shell is arranged on the end face of the upper shell, and the lower lock shell is arranged on the end face of the lower shell, the upper lock shell and the lower lock shell are locked with each other to realize the connection between the upper shell and the lower shell. The device is simple and easy to use, greatly improves the efficiency of post-weld heat treatment, and is easy to assemble and disassemble. The automatic locking structure can effectively prevent the occurrence of safety accidents, greatly improving work safety.

The utility model relates to the technical field of papermaking, in particular to an air swelling shaft sleeve device, which comprises a moving trolley, a lifting device, an air swelling shaft sleeve device and an air swelling shaft sleeve device, and is characterized in that the moving trolley comprises a chassis and a bearing bracket arranged above the chassis, and the bearing bracket consists of a cross rod and a reinforcing rod; the two supporting devices are symmetrically arranged above the reinforcing rod, and each supporting device comprises a first supporting part and a second supporting part which are arranged on the reinforcing rod, and an abutting part connected with the first supporting part and the second supporting part; the vertical height between the highest point of the first supporting part and the reinforcing rod is larger than the vertical height between the highest point of the second supporting part and the reinforcing rod. And the fixing device comprises a clamping piece for fixing the end part of the air swelling shaft and a driving part for driving the clamping piece to move up and down, through the arrangement, the service life is prolonged, the maintenance cost is reduced, the problems that time and labor are wasted and personal injury is easily caused during manual carrying and lifting are solved, and the working efficiency and the working safety are effectively improved.

A cantilevered work platform and method with dynamic balancing counterweight are disclosed, belonging to the technical field of high-altitude work safety equipment. The platform includes a main boom, a telescopic boom, a personnel carrier frame, and a base. A dynamic center of gravity compensation device, consisting of a counterweight slide rail, a movable counterweight block, and a drive mechanism, is installed on the base. The counterweight block, linked to the pitch angle and telescopic stroke of the main boom via displacement sensors, moves in real-time along the slide rail in the opposite direction to counteract the variable overturning moment generated during operation. Simultaneously, a dual-rope self-locking fall arrest system, independent of the platform structure, is installed above the personnel carrier frame. This system includes two safety ropes anchored to high-level fixed points and corresponding speed difference controllers, directly connected to the worker's safety belt. This invention improves the overall anti-overturning stability of the machine by actively adjusting the counterweight position and ensures personnel safety even in the event of platform failure, significantly enhancing the reliability and safety of high-altitude operations.

The application discloses a kind of edge vertical hole opening electric protection curtain device structure and construction method, including track system, protection system, lifting system and power system, track system and lifting system are set on building outer wall, track system is below lifting system, track system is connected with protection system and lifting system, power system is set on the working face floor of the structure layer to be decorated, power system is connected with lifting system;Track system, protection system and lifting system are all made of rigid material, effectively improve the integrity of building edge hole closure, provide high work safety environment, power system adopts motor brake regulation protection height, according to different vertical hole height, construction working surface height adjusts the height of protection system, by using different system modular assembly process, improve installation efficiency and material reuse rate, reduce labor and material cost input.

The utility model discloses corrugated board cutting equipment with a positioning mechanism, which comprises a workbench and a telescopic rod, and relates to the field of corrugated paper processing. On one hand, the gas washing box is fixedly installed at one end of the workbench, and on the other hand, the dust remover is fixedly connected with the gas washing box through the gas inlet pipe, so that dust and waste gas generated in the cutting process can be treated in time, and damage of the dust to equipment is reduced; meanwhile, the waste collecting bin is additionally arranged, so that waste scattering is reduced while resources are saved, and potential safety hazards of a working place are reduced; the paper feeding bin is fixedly installed on one side of the workbench, a lifting air cylinder fixedly installed in the bin drives a fixing plate to fix corrugated boards, then a telescopic rod in the bin drives a push rod to push the corrugated boards, and therefore the machine can automatically convey and cut the corrugated boards; the production efficiency is greatly improved, the labor cost is reduced, and the working safety is improved.

The invention relates to a moving-out device for a crucible of a skull furnace, which is characterized in that a crucible carrying moving trolley device is arranged on one side of a crucible device and is fixedly connected with the crucible device, and the crucible device is driven by the crucible carrying moving trolley device to do reciprocating linear movement; the trolley hydraulic driving device is arranged below the pot carrying moving trolley device; the trolley hydraulic driving device drives the pot carrying moving trolley device to do reciprocating linear movement; aiming at the design that a crucible and a pouring cup are both fixed in a furnace body of a domestic vacuum consumable skull furnace, a larger operation space and environment are provided, and the problems that an operator needs to enter the furnace when skull and splash are removed, the furnace is extremely difficult to operate due to poor environment and small space in the furnace, and potential safety hazards exist are solved. And the effects that the operators can conveniently use various tools and hoisting equipment, environmental constraint and influence are avoided, the working environment is improved, and working safety is guaranteed are achieved.

The utility model discloses a woven bag fixed-distance splitting machine which comprises a first conveying device, a second conveying device is erected on the middle section of the inner side of the first conveying device, a base is arranged on one side of the second conveying device, a frame is fixedly installed on the top of the base, and a double-shaft motor is fixedly installed at the bottom of the inner side of the frame. A double-shaft motor is installed on the frame, special-shaped gears are fixedly installed on output shafts on the two sides of the double-shaft motor, and a rotating rod located above the double-shaft motor is rotatably installed on the inner side of the frame. And the head end and the tail end of the woven bag are cut at the same time, two woven bags can be cut at a time, the cutting efficiency and quality of the woven bags are improved, a user can have enough response time to handle emergency situations during work, the work safety of the user is improved, and convenience is provided for work and use of the user.

The utility model relates to the technical field of welding mechanical arms and discloses a full-automatic welding mechanical arm which comprises a frame body, a driving motor is fixedly installed on the front surface of the frame body, a mechanical arm body is rotationally arranged between the front inner wall and the rear inner wall of the frame body, a welding assembly is arranged on the left surface of the mechanical arm body, and a welding head is arranged on the left surface of the welding assembly. The welding device comprises a frame body, a driving motor, a mechanical arm, a welding assembly, a welding head, a mounting plate, a fireproof cloth, a baffle, a second bolt and the like, telescopic cylinders are fixedly installed on the upper surface and the lower surface of the mechanical arm, and the output ends of the telescopic cylinders are fixedly connected with a fixing frame. The structure of the frame body, the driving motor, the mechanical arm, the welding assembly, the welding head, the telescopic cylinders, the fixing frame, first bolts, arc-shaped pipes, mounting plates, fireproof cloth, baffles, second bolts and the like is matched; the working area of the welding head can be shielded and protected, splashing of sparks can be effectively resisted through the fireproof cloth, the fireproof cloth can be conveniently replaced in the later period, the protection efficiency is improved, and the welding work safety of the full-automatic welding mechanical arm is ensured.

The invention relates to a tool for electrically installing a parallel groove clamp, and aims at solving the problems that a traditional tool is heavy, low in efficiency, depends on multi-person cooperation and is poor in safety. The tool comprises a basic mounting rack, an insulating operating rod joint assembly, a wire clamp fixing and clamping assembly, a parallel groove clamp bolt control assembly and an electric cabinet. Through remote control of the electric control box, single-person electric operation can be realized, and the parallel groove clamp can be mounted and dismounted. According to the tool, the head of a parallel groove clamp is clamped through the clamp fixing and clamping assembly, a lead is fixed through the lead clamping assembly, a sleeve is driven through the bolt control assembly to lock a bolt, and reliable connection of the lead and an electric power circuit is ensured. The structural design is compact, the back plate and the guide rod are supported to enhance the stability, and the gearbox is accurate and reliable in transmission. The tool is light and efficient, significantly reduces the labor intensity, reduces the dependence on the skill level of an operator, is especially suitable for a high-altitude live working scene, improves the working safety and efficiency, and has important practical value and popularization significance.

The embodiment of the invention provides a snow shovel unfolding and folding control method, and relates to the technical field of snow shovels. The snow shovel unfolding and folding control method comprises the steps that an unfolding instruction is obtained, and an electromagnet on the right side of a first reversing valve is controlled to be electrified according to the unfolding instruction; keeping the electrifying duration of the first reversing valve to a first preset duration, and controlling the right electromagnet of the first reversing valve to be de-energized; a right electromagnet of the second reversing valve is controlled to be electrified; keeping the electrifying duration of the second reversing valve to a second preset duration, and controlling the right electromagnet of the second reversing valve to be de-energized. Acquiring a recovery instruction; controlling a left electromagnet of the second reversing valve to be electrified according to the withdrawing instruction; keeping the electrifying duration of the second reversing valve to a seventh preset duration, and controlling an electromagnet on the left side of the second reversing valve to be de-energized; a left electromagnet of the first reversing valve is controlled to be electrified; keeping the electrifying duration of the first reversing valve to an eighth preset duration, and controlling an electromagnet on the left side of the first reversing valve to be de-energized. The control method can reduce the operation difficulty of folding and unfolding the snow shovel and improve the operation safety.

This invention discloses an emergency start test method for Fuxing high-speed trains, comprising the following steps: confirming before the test that the overhead contact line has been de-energized and the train is in a battery disconnected state; preparing the connection fixtures for the test; confirming that the auxiliary air compressor, pantograph, and vacuum circuit breaker are functioning normally; using testing software to confirm that the converter is functioning normally; and restoring the test structure to its original state. This invention enables the completion of an emergency start test of the train under conditions of no power to the overhead contact line and no high voltage supply to the train, avoiding the risk of high voltage grounding, improving work efficiency, fundamentally eliminating the risk of overhead contact line grounding and overcurrent melting caused by EGS misoperation, and improving work safety.