80 results about "Emergency Power Failure" patented technology

The invention discloses a malfunction study and determination optimization method based on a power distribution main station. The method includes the steps of (1) when a sharp drop occurs, distinguishing that the sharp drop is caused by an accident or manual operation; (2) recognizing the state of automation equipment to conduct trip point analysis; (3) additionally conducting filtering disposal on emergency power cut information; (4) verifying malfunctions of an adopted system; (5) making protective signals of non-trip-out equipment on a feeder line subjected to the trip point analysis for processing; (6) recognizing a distribution transformer of an internet port of a power plant and distribution transformers of multiple power sources, and ignoring the distribution transformers above during the trip point analysis; (7) recognizing the power cut causes of the distribution transformers and the electrification state of the distribution transformers; (8) conducting analysis and generatinga prewarning distribution transformer list. By adopting the malfunction study and determination optimization method, the accuracy of study and determination is improved, error reports and report omissions can be reduced, and the working efficiency of dispatching and repairing distribution networks is greatly improved.

The invention discloses a biofilm biological sewage treatment device, which relates to the technical field of sewage treatment equipment and solves the technical problems in the prior art that the environmental temperature will affect the sewage treatment efficiency and cannot continue to work during an emergency power failure. It includes an MBR membrane pool , adsorption filter pool, constant temperature control room, lifting hook, cover plate, exhaust window, the adsorption filter pool is welded on the right side of the MBR membrane pool, the constant temperature control room is welded on the right side of the adsorption filter pool, and the inside of the MBR membrane pool A heating net is provided, an activated carbon filter layer is provided in the adsorption filter tank, a storage battery is provided in the constant temperature control room, the lifting hook is provided on the top of the biofilm sewage treatment device, and the top cover plate of the biofilm sewage treatment device is set as solar energy solar panels. The biomembrane biological sewage treatment device of the invention has the advantages of high sewage treatment efficiency, convenient installation and transportation, and the ability to continue working after emergency power failure.

The invention belongs to the field of power equipment control, relates to a transformer management technology, is used for solving the problem that potential safety hazards exist in the mode that an existing transformer monitoring and management system adopts a unified and fixed threshold value to judge the operation state of a transformer, and particularly relates to a transformer monitoring and management system based on big data analysis. Comprising a monitoring management platform, and the monitoring management platform is in communication connection with an operation analysis module, an early warning module, a service life analysis module, a storage module and a controller. The early warning module comprises a red signal lamp for indicating emergency power failure, a yellow signal lamp for indicating abnormal operation and a green signal lamp for indicating normal operation; the operation state of the transformer is detected and analyzed in real time through the operation analysis module, and the operation coefficient is calculated through the operation parameters of the transformer, so that the transformer is protected, aging acceleration caused by excessive use of the transformer is prevented, and the service life of the transformer is prolonged.

The invention discloses a mechanical and electrical piston directly-driven reciprocating pump, which mainly comprises an internal-combustion engine cylinder, a reciprocating pump cylinder, a rack rod, a rack rod clutch, a coupling, a start wheel, a starter, a crankshaft, a connecting rod, a motor clutch, a motor and the like. Pistons of an internal-combustion engine cylinder group and a reciprocating pump cylinder group are in a direct-drive mode, so that the mechanical and electrical piston directly-driven reciprocating pump not only has the characteristics of the reciprocating pump, but also is simple and compact in structure, low in energy consumption, high in efficiency and stable in flow and pressure; two powers of an internal-combustion engine and the motor can be interchanged for use, so that operation requirements for the industries of fire protection, mines and oil fields can be met, particularly the operation requirements in situations of no electric power or emergency power failure can be met.

The invention discloses a portable movable refrigerator. The portable movable refrigerator comprises a refrigerator body, wherein a refrigerating chamber is arranged in the refrigerator body, a movable flat plate capable of vertically separating and placing food and beverages is installed in the refrigerating chamber in a sliding mode, and a first cavity is formed in the lower side of the refrigerating chamber. According to the portable movable refrigerator, refrigeration is conducted inside the refrigerator through semiconductor chilling plates, and the weight of the refrigerator is reduced,so that the refrigerator is convenient to carry and move, the food and beverages are separately placed through movement of guide rails, meanwhile, a permanent magnet is attracted through energizationof an electromagnet to achieve closing of a refrigerator door, a refrigeration circuit is connected through an internal storage battery under the condition of external emergency power failure, and therefore, operation of a refrigerating system inside the refrigerator is guaranteed.

The invention discloses a special-type intelligent door dual-system control device, and the device comprises the commercial power, a switching power supply, a standby power supply, a commercial powerdetection device, an access controller and an electronic lock. The access controller comprises a controller CPU, and the commercial power detection device comprises a low voltage conversion unit. Theaccess controller further comprises an IGBT dual-power switching unit, an alarm unit and a remote communication unit. The IGBT dual-power switching unit comprises an IGBT electronic switching switch,which greatly improves the commercial power compared with the switching speed of a relay, thereby improving the switching speed of the commercial power and the standby power supply, and truly achieving the uninterrupted supply of the power supply. The device is short in switching time, is high in reliability, has no problem of switching sparks, and is very good in application prospect, can achievethe starting of an electronic lock remotely through the access controller, achieves the remote control of the opening of the door and the emergency opening of the access control system in case of emergency power failures. When the fire or extreme danger occurs, the ambulance personnel can perform the emergency opening without approaching.

The invention discloses a magnetic-rotation-type child electric shock proofing smart socket based on fingerprint recognition, which belongs to the field of electrical equipment. According to the magnetic-rotation-type child electric shock proofing smart socket based on fingerprint recognition, fingerprint recognition is used to give the use permissions to users with mature minds and behaviors to avoid the danger of children's random use of electricity; in the idle state, the electronic socket is in a closed and locked state, which can prevent children from touching, and can also play a role indust and water resistance; due to a magnetic suction function in the use state, the electronic socket is driven to flip and unfold for a user to use, and at the same time an anti-electric shock modeis activated; a variety of methods including infrared induction, pressure sensing and temperature and humidity measurement are used for prevention; once abnormal use behavior occurs, mechanical protection and emergency power failure protection are used for electric shock protection; electric shock accidents are effectively avoided; the safety of the socket in the home is greatly improved; and theprobability of electric shock of children is reduced as much as possible.

The invention discloses a system and treatment method for dealing with sudden power failure accidents of a sludge supercritical water oxidation device. A high-level water tank and a pneumatic valve are arranged, when an emergency power failure accident happens, a high-pressure area of the supercritical water oxidation device is divided into a plurality of working sections through opening and closing of the pneumatic valve, and pressure relief operations are performed; and then, pipelines are forcedly flushed by utilizing stored water in the high-level water tank, so that the operations of sludge removal and cleaning in the supercritical water oxidation device are finished in a non-power-supply state, and the risk that equipment is irreversibly damaged due to the fact that the sludge is blocked in the supercritical water oxidation device and cannot be discharged due to sudden power failure accidents is effectively avoided. Meanwhile, the problem that the equipment investment is increased due to the arrangement of a high-power diesel generating set is solved, and the risk that the system unsafety is increased due to introduction of flammable and combustible diesel is avoided.

The invention discloses a boiler system and a power failure protection method thereof. The power failure protection method comprises the following steps that small-displacement discharge valves and aninterlocking protection control logic of the small-displacement discharge valves are arranged at the boiler system, when an emergency power failure accident occurs and the main steam pressure reachesan opening pressure value or the water cooling wall outlet working medium temperature reaches an upper limit value, the small-displacement discharge valves are automatically opened; at the moment, ifthe main steam pressure reaches the set pressure of a PCV valve, the PCV valve is manually operated to prevent the PCV valve from being opened; the main steam pressure is continuously reduced throughsteam discharge; when the main steam pressure is reduced to the re-seating pressure and the water cooling wall working medium outlet temperature is lower than the set upper limit, the small-displacement discharge valves are automatically closed; and the above opening and closing operation are continued until the power supply is restored. The total rated discharge amount of the discharge valves is1%-6% of the boiler evaporation amount; and according to the boiler system and the power failure protection method thereof, through opening and re-seating of the small-displacement protection discharge valves, a working medium in a water cooling wall of a boiler is discharged intermittently, the pressure in the water cooling wall and the temperature of the pipe wall are controlled so that the safety of the water cooling wall can be ensured within the relatively long time.

The invention discloses a remotely-controlled motor vehicle signal lamp which comprises a remote signal lamp body. The remote signal lamp body is provided with a lamp post, a standby power supply boxis arranged at the bottom of the lamp post, a loudspeaker is arranged on the lamp post, and a controller is arranged in the lamp post; a wireless transceiving device is arranged at the top of the lamppost, a lamp holder is arranged at one end of the lamp post, a signal lamp body is arranged on the lamp holder, and a camera is arranged at the top of the signal lamp body; a control console is arranged on the remote signal lamp body, and a wireless communication module is arranged on the control console and is connected with a single-chip microcomputer. The standby power supply box is arranged on the remotely-controlled motor vehicle signal lamp, so that normal operation of the signal lamp can be maintained during emergency power failure. Remote signal connection with the control console iscompleted through the wireless transceiving device, and remote regulation and control over the signal lamp are completed by the control console. Real-time monitoring of the vehicle condition is completed through the camera, and scheduling is facilitated. The loudspeaker is used for conducting voice command and dispatching on vehicles.

The invention belongs to the industry of electric power, and specifically discloses a remote voice broadcast apparatus and platform, used for broadcast notification carried out in advance by maintenance personnel in villages through wireless devices or speakers in communities when power failure or temporary power failure is needed for power supply maintenance. The remote voice broadcast apparatus and platform is composed of a master station system, a remote transceiving conversion apparatus and a loudspeaker and is characterized in that work personnel compile tests of power failure notification into short messages through intelligent mobile phones, the short messages are then sent to the remote transceiving conversion apparatus, and the apparatus converts the short messages into voice for external play through the loudspeaker. The remote voice broadcast apparatus and platform has the following advantages: the short messages are converted into the voice through the apparatus for external play through the loudspeaker, such that the work efficiency is greatly improved, and application of the method is quite convenient particularly during temporary emergency power failure.

The invention provides an electrician training and examination apparatus. The electrician training and examination apparatus comprises an apparatus housing, a switch power panel, a hanging box plate and an instrument plate. The hanging box plate and the switch power panel are connected; the instrument plate, the switch power panel and the hanging box plate are connected; the switch power panel is provided with a low voltage power pack; the low voltage power pack comprises an AC 24V power source, a DC positive and negative 24V power source, a DC positive and negative 12V power source and a DC positive and negative 5V power source; the apparatus housing is provided with a sudden stop switch connected with the switch power panel; and the apparatus is internally provided with a charging battery. The electrician training and examination apparatus has the following advantages: the structure is reasonable, and the function expansion is easy; the sudden stop switch is arranged, so that in case of emergency, immediate power failure can be realized for protection of safety of users and instruments; and the apparatus is internally provided with the charging battery, so that in case of emergency power failure, power support can be provided for a certain period, the users can close the apparatus according to operation steps, and no damage is caused to equipment.

The invention provides a washing machine and a control method thereof. The washing machine comprises a washing machine body, a storage battery and a charging part, wherein the storage battery is connected with the washing machine body; the storage battery is used for supplying power to the washing machine body; the charging part is connected with the storage battery; and the charging part is used for charging the storage battery. According to the washing machine and the control method thereof, the washing machine can continue to run to complete washing without shutdown during emergency power failure.

The invention provides a high-reliability spraying machine for an automobile assembly line. The high-reliability spraying machine comprises a six-axis joint robot and a spray gun, wherein the spray gun is connected with a mixing device through a pressure maintaining device; the pressure maintaining device comprises a cylindrical body (1), the body (1) is provided with a cylindrical cavity, an opening communicating with a paint inner cavity is further arranged above the body (1), a floating disc (2) is arranged in the body (1) to divide the inner cavity into two parts, that is, an upper cavity and a lower cavity used for storing a paint, the floating disc (2) is in transition fit with the inner cavity, and a sealing device is further arranged at the fit part of the floating disc (2) and the inner cavity; a lead block (3) is placed on the floating disc (2); an outlet connected with the spray gun and an inlet connected with the mixing device are further formed in the lower cavity; and the six-axis joint robot is connected with a control cabinet, and the control cabinet is equipped with a backup power supply. The high-reliability spraying machine provided by the invention is capable of realizing emergency power failure treatment and avoiding breaking marks at a sprayed part after power failure, and is high in reliability.

The invention discloses a power supply system power connection terminal and a power connection method. The power supply system power connection terminal specifically comprises a terminal body, the terminal body is provided with a power connection terminal body and power connection sheets arranged at the two ends of the terminal body, the bidirectional power connection sheets can select direct power connection, and a side wire outlet at the side also facilitates side wire installation and is used for right-angle switching; a cable power connection head is included and provided with a butt joint end head and a cable plug wire pipe arranged above the cable power connection head; and a side edge wire outlet is included and is provided with a plug-in type wire opening and an electricity connection clamping piece arranged above the side edge wire outlet, and the side edge wire outlet is formed in the side edge of the terminal body. The invention relates to the technical field of power supply. According to the power supply system power connection terminal and the power connection method, the problems that the power connection terminal is inconvenient to disassemble and replace and has no emergency power failure capability are solved, and power failure of a line can be completed when external moisture is too large or a device is immersed by water.

A multi-direction escaping illumination fireproof door comprises a door frame and a door body which is movably connected with the door frame, and the multi-direction escaping illumination fireproof door is characterized in that the door frame is provided with emergency illumination devices which are directly connected with an external alternative-current power supply, each emergency illumination device comprises a box body, luminous devices which are arranged on the outer side of the box body, and a power failure starting switch and a storage battery, which are arranged inside the box body, wherein the power failure starting switch is connected with the luminous devices and the storage battery, the luminous devices are communicated with the storage battery through the power failure starting switch under the emergency power failure situation, and the luminous devices are powered by the storage battery to transmit the light. The emergency illumination devices are arranged on the front side, the rear side or the front side and the rear side of an upper rim of the door frame, the lower side of the upper rim and multiple positions on the inner sides of a left side rim and a right side rim, so that adequate illumination can be supplied. The emergency illumination can be provided by the fireproof door under the power failure situation, so that people can be helped escape orderly when fire occurs. The multi-direction escaping illumination fireproof door has the characteristics of simplicity in structure and easiness in implementation.

The invention discloses a protection device for network security equipment, which comprises a mounting seat. A plurality of supporting frames arranged on the outer side of the mounting seat, and limiting ring plates arranged at the far ends of the supporting frames. A rotating seat rotatably connected to the inner side of the mounting seat, a rotating ring plate arranged at an opening of the rotating seat, a working mechanism arranged in the rotating ring plate, and a driving mechanism arranged on the outer side of the rotating seat. An adjusting mechanism is arranged in one supporting frame. When emergency situations such as breaking of the firewall occur, a driving motor is started, an electric telescopic rod is controlled, a connector of a main power source can be rotated and screwed out of a connecting position, emergency power failure is carried out on equipment, larger subsequent damage caused by an invader is avoided, and network security protection is provided to the maximum extent.

The invention provides an intelligent charging pile for charging according to the real-time load of a battery. The intelligent charging pile comprises a charging box body and a charging gun, the charging box body comprises a charging management module, a battery control module, a monitoring module and a safety module; the charging management module is used for managing a charging vehicle and generating a charging strategy; the monitoring module is used for monitoring the battery in real time to obtain the real-time load of the battery; the battery control module is used for generating a battery charging scheme according to the real-time load of the battery, controlling battery charging and acquiring battery charging data; the safety module performs safety management on the battery according to the battery charging data; the applicability of the charging pile is improved through the charging management device, more different types of new energy vehicles are served, the accuracy of rechargeable battery data is ensured through the monitoring device, charging adjustment is carried out according to the real-time state of the battery, and the safety of the charging pile and the safety of the battery under the emergency power failure condition are protected through the safety device.

The invention discloses a computer case with a standby lithium battery. The device comprises a box body, a fan, a power line and a data line, a CD driver is mounted on one side of the upper surface ofthe box body; a power supply is mounted on the other side of the upper surface of the box body; a voltage sensor is arranged on the power supply; the power line is mounted on the side surface of thepower supply; A main board is installed on one side of the middle of the box body. A CPU is arranged on the main board, the lithium battery controller is arranged on the main board, the fan is installed above the CPU, the hard disk is installed on the other side of the middle of the box body, the data line is installed on the hard disk, the memory slot is installed on one side of the lower portionof the box body, and the memory bank is installed on the memory slot. The computer has the advantages that under the condition of emergency power failure, the standby lithium battery can continue tosupply power to all parts of the computer, a user can store some important files and data which are being operated, and loss is avoided.

The invention discloses a computer security login system based on Internet of Things, belongs to the technical field of computers, and solves the problem that normal login verification work cannot berealized when a computer is in emergency power failure in an existing system. The system comprises a computer terminal module used for verifying user login, a front control module, used for controlling the computer terminal module to operate; a data platform module used for processing login data; a standby power supply module used for storing energy and supplying power. The data platform module isconnected with the pre-control module through a local area network. The system has the advantages of being stable in operation and convenient and fast to operate, meanwhile, due to the arrangement ofthe standby power supply module, power can be supplied to a computer when the computer is powered off, the computer security login system further has the advantage of being safe in login, and the safety of user data and the privacy of a user are guaranteed.

The invention belongs to the technical field of high-voltage power equipment maintenance, and particularly relates to a high-voltage power equipment connector heating defect emergency treatment device. The device comprises a base, a movable clamping plate and a telescopic device, the bottom of the movable clamping plate is hinged to the telescopic device, a shunting line is arranged on one side of the base, one end of the shunting line is fixed to the base, and the other end of the shunting line is fixed to the movable clamping plate. The high-voltage power equipment connector heating defect emergency treatment device can safely and efficiently dispose the most common defects of a power grid, and improves the operation safety and reliability of the power grid. Switching operation under emergency conditions is reduced, and risks of human bodies, the power grid and the like are reduced; and fixed asset loss such as equipment burning loss caused by untimely processing of heating defects, load loss of emergency power failure and manpower and material resources consumed by first-aid repair can be avoided.

The invention relates to the technical field of industrial heat conduction, and discloses a coal-fired heat conduction oil boiler. The boiler comprises a boiler tube, a cooling chamber is fixedly connected to one side of the boiler tube, an electromagnetic switch is arranged in the middle of the connection of the boiler tube and the cooling chamber, a heat conduction oil circulating device is fixedly connected to the other side of the cooling chamber, a steam starting device is movably installed on the other side of the heat conduction oil circulating device, an induced draft fan base is fixedly installed on the other side of the steam starting device, and a water pipe used for spraying and cooling is arranged above the induced draft fan base. Steam generated by cooling of the induced draft fan base through the water pipe drives the steam starting device, the heat conduction oil circulating device is driven by turning of a turning device during emergency power failure, the electromagnetic switch is turned on without electricity, so that high-temperature heat conduction oil in the boiler tube flows into the cooling chamber more quickly, and the problems of boiler tube deformation and even fire caused by stagnation of high-temperature heat conduction oil in the boiler tube in a power failure state are solved.

The invention relates to the field of deep-sea mining. The invention aims to provide a design method for preventing nodule particle accumulation under the condition of emergency power failure of deep sea mining equipment and related equipment designed according to the design method so as to reduce the inconvenience of undersea operation and prolong the service life of a pump body. According to the technical scheme, the equipment for preventing nodule accumulation under the emergency power failure condition of the deep sea mining equipment is characterized by comprising a main pipe detachably connected with a lifting hard pipe and a plurality of emergency use air storage tanks evenly fixed to the periphery of the main pipe; an air outlet is formed in the emergency use air storage tank; an air outlet of the emergency use air storage tank is communicated with the main pipe through a connecting pipeline; the connecting pipeline is provided with an air inlet adjusting valve and a pressure sensor located at an outlet of the air inlet adjusting valve. A pressure monitor is further installed on the emergency use air storage tank so as to monitor the internal pressure of the emergency use air storage tank.

The utility model discloses a power-off protection candy packaging and arranging device which comprises a bottom plate, the top of the bottom plate is fixedly connected with two vertical plates, and the two vertical plates are fixedly connected through a rack. According to the utility model, damage to the packaging machine and the electric conveying belt caused by electrified surge can be effectively prevented through the air switch under the condition of emergency power failure, the packaging machine and the electric conveying belt are effectively protected, the air switch can be conveniently dismounted and maintained, the dismounting steps are simple, time and labor are saved, and the working efficiency is improved. And the practicability of the device is greatly improved.

The invention discloses a green electric power energy storage and consumption system integrating functions of vehicle battery replacement, mobile energy supply and vehicle-power grid interaction (V2G). The system is composed of key components such as a photovoltaic array, a power conversion system, a power grid, a battery charging and replacing station, batteries in low-electric-quantity and full-electric-quantity states, a power and energy storage integrated battery bin, an electric vehicle and an electricity load. The power and energy storage integrated battery bin serves as a system core assembly and can adapt to various application scenes such as energy transmission (V2V) between vehicles, energy interaction (V2G) between the vehicles and a power grid and energy supply (V2L) between the vehicles and loads at the same time. In an energy network integrated by a photovoltaic system, the system has the capability of directly providing green power supply for a charging and battery swapping station, and meanwhile, redundant electric energy can be transmitted to a power grid to realize power grid connection. In an emergency, the power grid can provide necessary power support for the charging and battery swapping station; the charging and battery replacing station is mainly responsible for replacing the low-power battery and providing the fully-charged battery for the vehicle and the power storage integrated battery compartment so as to meet the power requirement of the vehicle and the power storage integrated battery compartment. The invention provides an innovative solution for key scenes in the technical field of electric vehicles. Specifically, the invention relates to the following aspects: aiming at the technical problem of external discharge caused by lack of a standardized battery compartment design, the technology of mutual charging between vehicles, the technology of interaction between an electric vehicle and a power grid, the technology of supplying power to electric load equipment by the electric vehicle, and the technology of emergency power failure under the condition of emergency power failure. The invention discloses a technology for supplying power to residential buildings or commercial buildings by electric vehicles.

The invention provides a method and a device for preventing an olefine polymerization reactor of a gas phase fluidized bed from caking, and relates to an olefine polymerization reaction process of a gas phase fluidized bed. The olefine polymerization reaction is carried out in a reaction system comprising a gas phase fluidized bed polymerization reactor, a recycle gas compressor and a recycle gascooler. The reaction system also comprises a standby driving system, and the driving system comprises a storage battery and an emergency motor. When a main motor of the compressor cannot work due to emergency power failure in a polymerization reaction process, the feed of a monomer and a catalyst is automatically cut off; and simultaneously under the condition of injecting a terminating agent into the reactor to terminate the reaction, the storage battery in the standby driving system supplies power to the emergency motor, and the emergency motor drives the recycle gas compressor in the polymerization reaction system to continuously work to enough time under the condition of ensuring a reactor bed in a fluidized state, so the terminating agent is fully contacted with the reactor bed to effectively terminate the polymerization reaction so as to prevent the reactor from caking.

The simple lighting device comprises a storage battery, a copper-zinc reaction power generation device, an LED lamp and nylon buckles, the storage battery and the copper-zinc reaction power generation device are fixed to the field operation medical tent through the nylon buckles, the copper-zinc reaction power generation device is electrically connected with the storage battery, and the LED lamp is electrically connected with the storage battery. The device is simple in structure and convenient to use, and is used for emergency power failure illumination without a large power generation device, so that the requirement of emergency rescue of the wounded is met.

The invention discloses a data modeling processing structure of a big data genetic algorithm, which comprises an information encoder, a data modeling processor and an information compressor; an abutting data pin is arranged on the information encoder, the information encoder is connected with a temporary storage stacker; the inner part of the temporary storage stacker is provided with a managementport, and a storage grain is arranged on the temporary storage stacker; a storage plug slot is further arranged on the temporary storage stacker, the data modeling processor is arranged beneath the temporary storage stacker. A radiating fan is arranged on the data modeling processor, the side of the radiating fan is provided with an assembling groove. The data modeling processing structure has the beneficial effects that the data modeling processing structure has active radiating system and can guarantee good performance in working process; meanwhile, the data modeling processing structure has data stacking and temporary storage functions, and can store files under the emergency power failure; moreover, the data modeling processing structure has the functions of modeling, feedback and re-modeling, thus the modeling quality is improved.

The invention discloses an operation method of an electromechanical frequency conversion electromagnetic lock and an electromechanical frequency conversion electromagnetic lock, comprising: a housing, including a lock housing and a panel, the panel is arranged on the external surface of the lock housing, and the interior of the lock housing corresponds to the connecting groove. The position is provided with a straight baffle and an L-shaped baffle; the triangle bolt part includes a triangle bolt body, a triangle bolt head, and a sliding rod. The triangle bolt head is rotatably connected to the front end of the triangle bolt body and the rear of the triangle bolt body The end is provided with a movable groove opening to the side, and the sliding rod is rotatably connected in the movable groove; the locking part includes a rotating rod and an electromagnet, and the middle part of the rotating rod is rotatably connected with the second roller through a bearing column. In the lock case, the electromagnet is arranged on the inner wall of the lock case opposite to the outer surface. The beneficial effects of the present invention are: the electromagnet is degaussed when the power is cut off, and can be unlocked, which improves the safety of the electromechanical frequency conversion electromagnetic lock and ensures the personal safety of personnel in the event of power failure in an emergency.