606results about How to "Achieve protection" patented technology

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention discloses a mosquito control method and system based on carbon dioxide luring and powerful airflow repelling. The method comprises the steps that carbon dioxide airflow simulating human respiration is released in a preset attracting area to attract mosquitoes; monitoring whether mosquitoes enter a preset defense range or not in real time; when mosquitoes enter, the airflow injection unit is controlled to output pulse type strong airflow to flush away the mosquitoes, and meanwhile the concentration of carbon dioxide is diluted to destroy the smell positioning capacity of the mosquitoes. And repeating the steps to continuously form the dynamic protection field. The whole process of the method does not contain any catching and killing step, so that'only repelling but not killing 'is realized. The system supports multiple modes of automation, timing, manual operation and silence, COs can be generated by adopting DAC materials through biological fermentation or chemical slow release, and different cost requirements are met. The technical prejudice that mosquito prevention must be killed is overcome, non-killing mosquito management is achieved for the first time, and the method can be widely applied to courtyards, baby rooms, temples, ecological communities and other places and is environmentally friendly and free of pollution.

The application discloses a method for monitoring and controlling corrosion environment of an underwater concrete structure in a brackish water area, and the method comprises the following steps: laying a monitoring system, monitoring the concentration of chloride ions, analyzing data of the distribution of the concentration of chloride ions, dividing the area according to the concentration of chloride ions, adjusting an impressed current, and giving a warning of the corrosion environment; the brackish water area is divided into a constant saltwater area, a constant freshwater area and a brackish water interface change area by continuously collecting data of the concentration of chloride ions and constructing a concentration field and a gradient field model, so that the risk degree of the corrosion environment can be directly reflected, and the cathodic protection parameters can be dynamically adjusted according to the real-time corrected chloride ion concentration field model, thereby realizing the intelligent monitoring, early warning and control of the corrosion environment of the underwater concrete structure in the brackish water area.

The utility model relates to the technical field of non-woven fabric processing, and discloses a non-woven fabric uncoiling device which comprises a base, an uncoiling mechanism is arranged at the top of the base, a supporting mechanism is arranged at the top of the base, the uncoiling mechanism comprises an uncoiling assembly and a limiting assembly, and the uncoiling assembly is arranged at the top of the base. Through the arranged unwinding mechanism, when a non-woven fabric roll needs to be unwound, the non-woven fabric roll is connected to the peripheries of the fixing plates in a sliding mode firstly, the four fixing plates are in a folded state, and at the moment, an adjusting disc can be rotated to drive a threaded rod to rotate in a fixing cylinder to move front and back according to the size of the inner side of the non-woven fabric roll; when the threaded rod moves, the mounting base can be driven to slide on the periphery of the fixing cylinder, when the mounting base moves, the concave frame can be driven to move, in the moving process, the angle of the connecting shaft can be changed between the concave frame and the fixing plates, and the distance between the four sets of fixing plates and the mounting base can be changed.

The utility model provides a high protection level electrical equipment cabinet, the cabinet is divided into an upper part and a lower part of an open cabin and a sealed cabin, the open cabin is used for installing heat exchange equipment, and air inlet filter screens are installed at the front and the back of a cabinet body of the open cabin; the sealed cabin is used for installing electrical equipment, adopts a cabinet door design that two doors are oppositely opened, and comprises an auxiliary cabinet door and a main cabinet door which are arranged left and right; the side surface of the auxiliary cabinet door is provided with a crimping sealing structure. A rubber strip groove is formed in the side face of the main cabinet door, and a sealing rubber strip is arranged in the rubber strip groove. When the two doors are closed, the crimping sealing structure of the auxiliary cabinet door is pressed into the adhesive tape groove of the main cabinet door. A water retaining strip is arranged in the middle of the sealed cabin top cover and used for draining water flow above the cabinet door from the two sides. Through the special structural design, the weakest waterproof link at the top of the double doors is effectively protected, and the protection level of the whole electrical cabinet is improved.

The utility model discloses an automobile sensor protection device, and relates to the technical field of protection devices. The automobile sensor protection device comprises a sensor body, a filter screen, a first protection shell and a second protection shell, a sleeve is fixedly arranged at one end of the sensor body, embedding grooves are formed in the two sides of the filter screen, a limiting mechanism is arranged on the surface of the sleeve, and the first protection shell and the second protection shell are arranged in the limiting mechanism. And connecting mechanisms are arranged on the surfaces of the first protective shell and the second protective shell. According to the utility model, the first protective shell and the second protective shell can be quickly connected through the connecting mechanism, so that the first protective shell and the second protective shell are locked, the device can realize convenient disassembly and assembly of the first protective shell, the second protective shell and the filter screen, and a disassembly and assembly tool is not needed in the disassembly and assembly process, so that the working efficiency is improved; and the sensor main body can be prevented from being damaged when a dismounting tool is used, so that the protection of the sensor main body is realized.

This application relates to the field of vehicle technology, disclosing a handle structure, a door assembly, and a vehicle. The handle body has a retracted state and an extended state. The handle body and a detection device are respectively disposed on the outer and inner surfaces of the base. The retracted detection unit has a first trigger part, and the extended detection unit has a second trigger part. The window trigger device is disposed on the inner surface of the base and has a third trigger part. The handle drive arm is disposed on the inner surface of the base and includes a connected first body, a first protective part, and a second protective part. The first protective part is used to at least cover the first trigger part, and the second protective part is used to at least cover the second trigger part. The unlocking drive arm is disposed on the inner surface of the base and includes a connected second body and a third protective part. The third protective part is used to at least cover the third trigger part. The handle structure provided by this application can solve the problem of damage caused by accidental activation of the micro-motion switch by the operator and the failure of the handle after installation in the vehicle.

The invention discloses an anti-falling robot and an anti-falling method and equipment, relates to the field of intelligent robots, and is used for realizing cliff identification and falling protection in a full scene. Identifying a falling risk based on a detection result of the sensor module by at least detecting whether a cliff exists in a first preset range and a second preset range around the robot body; and controlling the motion state of the robot body based on the falling risk. According to the method, the cliff is synchronously detected through the near end and the far end, cliff identification and falling protection in a high-speed moving state and in a full scene where the cliff is initially located at the edge of the cliff or runs close to the edge are achieved at the same time, reliability and safety are high, system operation is smooth, and universality is high.

The utility model provides an ultrasonic signal acquisition cover, which relates to the technical field of signal acquisition equipment and comprises a handle component and an acquisition component. The handle assembly comprises a handle, the handle is connected with a mounting plate, the mounting plate is connected with a notch protection shell, and the notch protection shell is provided with a group of straight grooves; the acquisition assembly comprises a group of arc plates, each arc plate is connected with a group of symmetrical mounting seats, a detection sensor is mounted in a groove of each mounting seat, each arc plate is connected with an L-shaped rod, each L-shaped rod is connected with a sliding block, and each sliding block is nested in the corresponding straight groove. In order to overcome the defects in the prior art, the ultrasonic signal acquisition cover is developed, the detection sensors are distributed in the circumferential direction of the train brake pipeline, and signal acquisition is convenient to achieve.

The invention belongs to the field of industrial automatic detection, and particularly relates to a high-precision sensor detection mechanism which comprises a sensor protection shaft, a high-precision distance measuring sensor, a guide shaft sleeve and a transition block. The sensor protection shaft is of a hollow shaft-shaped structure; the high-precision distance measuring sensor is fixedly arranged in an inner cavity of the sensor protection shaft in the axial direction, and a measuring head of the high-precision distance measuring sensor faces the lower end of the sensor protection shaft. The guide shaft sleeve is coaxially arranged at the lower part of the inner cavity of the sensor protection shaft, and the lower end surface of the guide shaft sleeve is flush with or basically flush with the lower end surface of the sensor protection shaft; the transition block is sleeved in the guide shaft sleeve in an axial sliding manner, the lower end face of the transition block extends out of the guide shaft sleeve and the lower end face of the sensor protection shaft, and a preset gap is formed between the upper end face of the transition block and the measuring head. The slidable transition block is used for replacing a sensor measuring head to directly contact with a measured surface, so that pollutants such as oil stain and dust are effectively isolated, and the measuring head is kept clean and the measuring precision is kept.

A federated learning service deployment method and system based on end node residual energy perception, equipment and medium, the method comprising: constructing a corresponding federated learning time model and an end node energy consumption model for each end node according to the federated learning process; cloud gaming according to the federated learning time model and the end node energy consumption model; edge-end matching for end nodes participating in training; the system, equipment and medium are used for the federated learning service deployment method based on the end node residual energy perception; in the end node selection stage, a cloud gaming algorithm and an edge-end matching algorithm are designed, the end nodes participating in distributed training and their computing resource allocation are determined, the residual energy of the end nodes is introduced into the gaming revenue function, the end nodes with less residual energy select a lower CPU frequency, the edge nodes accessed by the end nodes and the transmission power allocation of the end nodes are determined, and the residual energy of the end nodes is introduced into the end node preference function, thereby reducing the end node computing energy consumption and realizing end node energy protection.

The application relates to the technical field of digital asset protection and information security, and discloses a digital asset uniqueness binding and identification method based on microscopic physical characteristics, which comprises the following steps: acquiring multi-dimensional microscopic physical characteristic data such as microscopic textures and materials of a physical original work, and acquiring a random optical response pattern of a physically unclonable function label as a supplementary or alternative source; and generating a physical fingerprint hash through multi-modal fusion. The system acquires at least one living body detection result, confirms that an operator is a real living body, acquires a digital signature generated by an identification personnel based on dynamic behavior, binds the digital signature with the physical fingerprint hash, and writes the physical fingerprint hash into a block chain. When subsequent identification is performed, the characteristics are reacquired and consistency comparison is performed, and the authenticity of the digital signature is verified. The application can prevent physical entity forgery, realizes privacy protection and cryptographic self-evidence of identification operation through zero-knowledge proof, and improves the binding reliability of digital assets.

The utility model provides a kind of transfer device for chip transportation, it is related to the technical field of semiconductor packaging, including loading mechanism, the loading mechanism includes carrier one, the carrier one is provided with fixed ring outside, the fixed ring one side is provided with fixed column two, the both ends of the carrier one are equipped with baffle one, the carrier one includes clamping plate one, the one side of the clamping plate one is connected with clamping plate two, the utility model is suspended in the central box by the pulling rope between fixed ring and box inner fixed column and makes loading mechanism whole, effectively attenuate the vibration caused by bumping and collision in transportation, carrier is composed of multiple layers of flexible clamping plate superposition, and multiple layers of flexible clamping plate are composed of honeycomb, impact is absorbed by its material and structural characteristics, each layer of clamping groove is embedded with carrier two with limiting baffle, inhibit internal component displacement, to realize the buffer protection and accurate positioning to chip.

The utility model discloses a mute door handle, which relates to the technical field of door handles and comprises a door handle main body, the door handle main body comprises a lockset panel, a bearing seat, a square rod and a handle are arranged in the middle of the lockset panel, one end of the lockset panel is provided with a mounting screw, a sound insulation plate is arranged in the lockset panel, and the sound insulation plate is provided with a sound insulation groove. An extension handle and a protection assembly are arranged at one end of the handle, the protection assembly comprises an installation sleeve, a T-shaped installation sliding rail is arranged in the installation sleeve, a rubber protection sleeve is arranged outside the installation sleeve, a positioning plate is arranged at one end of the installation sleeve, and a threaded rod is arranged on the side face of the positioning plate. According to the mute door handle, the protective assembly is arranged outside the extension handle in the sleeving mode, so that the extension handle and a user are protected, the extension handle is separated through the installation sleeve and the rubber protective sleeve, the user is prevented from making direct contact with the extension handle to generate static electricity, and the use comfort of the handle is improved.

This application relates to a flood control emergency response method, device, and electronic equipment for a valley-type dry ash storage yard. The method includes: responding to a preset emergency condition where the water level of the downstream drainage well's tail-end dammed lake meets the required emergency conditions, initiating emergency drainage measures to excavate a flood discharge channel and construct a flood control work surface; using a combination of hydraulic flushing and slurry pumping to clean the surrounding sediment deposits of the upstream drainage well; and after the drainage functions of both the downstream and upstream drainage wells are restored, reshaping the ash surface morphology of the entire valley-type dry ash storage yard based on the flood control work surface to construct a flood discharge system with the drainage wells as the lowest control points within the yard. This solves the problems in related technologies where heavy rain causes drainage wells to be buried by sediment, leading to drainage system failure, rapid rise in water level within the storage yard, and a lack of systematic emergency response measures, resulting in a sharp shortening or even disappearance of the dry beach in front of the dam, posing a risk of ash water overflow and dam collapse.

The utility model relates to the technical field of blanking devices for feed processing, in particular to an anti-blocking blanking device for high-quality feed processing and production, which comprises a blanking pipe, a discharge hopper is arranged below the blanking pipe, a vertical pipe which is vertically arranged is fixedly mounted on the bottom wall of the top of the discharge hopper, and the vertical pipe is connected with the discharge hopper. A spiral feeding ring is arranged in the discharging pipe and is in a spiral shape, a long shaft which is vertically arranged is fixedly installed at the bottom end of the spiral feeding ring, the long shaft is located in the vertical pipe and rotationally connected with the vertical pipe, and an upper protective sleeve which is arranged on the vertical pipe in a sleeving mode and rotationally connected with the vertical pipe is fixedly installed at the top position of the long shaft. The bottom end of the upper protective sleeve is fixedly provided with an outer protective sleeve which is arranged on the vertical pipe in a sleeving mode and rotationally connected with the vertical pipe, and the bottom end of the long shaft is coaxially provided with a driving motor. The blanking device has a blanking anti-blocking function, and is convenient for blanking operation.

This utility model discloses a residual current operated protector with special wave function, relating to the field of residual current protection. It includes: a power supply unit for acquiring signals using a metering chip, detecting voltage information, smoothing the voltage, and outputting low-voltage DC power to achieve power management; a main control unit for acquiring current signals, identifying and analyzing the current signals, obtaining status detection results, and outputting an operation protection command based on the detection results; a trip coil control unit for executing a power-off protection operation according to the operation protection command output by the main control unit; and an LCD display unit for displaying the status information of the operated protector. This utility model achieves accurate detection and protection against special waves through high-frequency sampling, harmonic analysis, and a fast tripping mechanism, realizing the synergistic optimization of high-frequency signal processing and the metering chip, and overcoming the limitations of traditional protectors in harmonic scenarios.

The utility model relates to steel cord production technical field, more particularly to steel cord electroplating heating furnace is used scale cleaning device, including first collecting groove and second collecting groove, first collecting groove's first end is arranged in the outside of the furnace mouth, second collecting groove is detachably connected to second collecting groove's second end, first collecting groove includes bottom plate and two side plates. The utility model discloses through the combination of first collecting groove and second collecting groove, can collect the scale that falls at the furnace mouth to the target area, can avoid scale to pollute the facilities around furnace mouth and site, first collecting groove and second collecting groove have higher flexibility, in the non -cleaning period, can independently split and place in the appropriate position respectively, do not occupy the site, in the cleaning period, first collecting groove can be close to the outside of the furnace mouth, is used for receiving scale, second collecting groove is assembled to the lower end of first collecting groove, and the scale that falls is collected centrally.

The application discloses a data privacy protection method and a detection method for a privacy-enhanced semi-blind digital fingerprint, combines a differential privacy technology and a digital fingerprint technology, embeds carefully designed noise into specific positions of a numerical aggregate data set, can realize fingerprint embedding and noise interference operation on carrier data in one step, and ensures protection of private information in the carrier data set and tracking function on traitors.

The utility model belongs to the field of metal structure engineering, and particularly relates to a high-strength and impact-resistant aluminum material structure which comprises a main body frame and a deformable supporting assembly, the main body frame is a long-strip-shaped aluminum strip with the length larger than or equal to 5 meters, and a double-layer gradient reinforcing rib assembly is arranged on the surface of the long-strip-shaped aluminum strip. A reinforcing seat in a deformable supporting assembly is matched with a first mounting groove in the side face of a long-strip-shaped aluminum strip, after matching of the reinforcing seat is completed, a limiting bolt penetrates through a limiting hole so that the reinforcing seat and the long-strip-shaped aluminum strip can be locked and matched, and after locking matching is completed, a mounting cushion block is mounted in a second mounting groove; a positioning bolt penetrates through a positioning hole to lock and match an installation cushion block and a long-strip-shaped aluminum strip, a connecting rod in a deformable supporting assembly rotates around a hinged joint to deform, an elastic energy absorption element absorbs impact kinetic energy and converts the impact kinetic energy into elastic potential energy, meanwhile, longitudinal reinforcing ribs on the surface of the connecting rod restrain buckling deformation, and multi-stage energy dissipation is achieved.

This application relates to the technical field of aerosol generation devices, disclosing a charging interface protection circuit, protection method, and aerosol generation device. The charging interface protection circuit includes a battery cell, a charging interface, a charging management circuit, a switching circuit, and a control circuit. The control circuit is electrically connected to the battery cell, charging interface, charging management circuit, and switching circuit, and is configured to: shut down the charging management circuit; detect a first charging voltage at the positive charging terminal; and, based on the first charging voltage and a first preset voltage threshold, control the charging interface protection circuit to operate in an open-circuit protection mode, executing an open-circuit protection strategy based on the contact resistance between the positive and negative charging terminals; or control the charging interface protection circuit to operate in a micro-short-circuit protection mode, controlling the switching circuit to be turned on or off based on the power adapter's charging protocol, thereby stopping the power adapter from supplying power. Therefore, the embodiments of this application can achieve abnormal detection and protection of the charging interface, improving charging safety.

This utility model discloses a modular waterproof power strip, relating to the field of power strip technology. It includes a housing with two sets of symmetrical fixing rods on its outer surface. A protective shell is mounted on the outer surface of each fixing rod, and the fixing rods are used to position the protective shell. A sleeve is provided at the inner end of the housing to protect the wiring channel, and a sealing and waterproofing mechanism is provided on the outer surface of the sleeve. This modular waterproof power strip, through the cooperation of the protective mechanism and the protective shell, protects the plug, thereby increasing the sealing effect of the device and preventing dust and water from entering the plug, which could lead to short circuits and damage. This increases the reliability of the device. The cooperation of the protective shell and fixing rods further protects the housing, reducing damage and extending its service life. Furthermore, when the protective shell is damaged, it can be easily replaced by disassembly, reducing costs and saving resources.

The utility model discloses a highly wear-resistant transparent lens cover comprising a lens barrel, a lens fixedly connected to the upper end in the lens barrel, and a protection mechanism. The protection mechanism comprises an upper protection cover, an annular rib groove I, a lower protection cover and spring pieces, the upper protection cover sleeves the upper end of the lens barrel, the annular rib groove I is formed in the lower end of the inner wall of the upper protection cover, the lower protection cover sleeves the lower end of the lens barrel, and the spring pieces which are uniformly distributed are fixedly connected to the upper end of the lower protection cover; the upper end of the spring piece is clamped with the interior of the first annular rib groove, the protection mechanism further comprises a second annular rib groove, a connecting cylinder, an annular rib and a hexagonal rib block, the second annular rib groove is formed in the lower end of the upper protection cover, and according to the high-wear-resistance transparent lens cover, the upper protection cover and the lower protection cover are rapidly and stably connected, so that comprehensive protection of a lens is achieved; and the protection effect of the lens is greatly improved.

The application belongs to the technical field of motor control, and provides a multi-unit motor working mode decision method for optimal efficiency in all working conditions, comprising: first, obtaining efficiency distribution graphs of different working unit numbers of the multi-unit motor through prototype testing, establishing an optimal switching boundary by using a support vector machine, and constructing a decision model receiving torque, speed and temperature feedback to output the optimal working unit number; second, analyzing the vehicle instruction to obtain the motor target torque; third, according to the working unit number: in the symmetric mode, the torque is evenly distributed, and in the asymmetric mode, the torque of the symmetric unit is first used to the maximum, and the remaining is distributed to the remaining units to suppress the unilateral magnetic pull; finally, connecting each unit to an independent control module, using maximum torque current ratio control combined with minimum harmonic space vector modulation driving, and using current, rotor position and temperature closed loop dynamic switching working unit number to realize optimal efficiency in all working conditions. The application can improve the energy efficiency and operation reliability of the vehicle, and balance the unilateral magnetic pull and thermal safety.

The utility model belongs to the technical field of quenching tube furnaces, and particularly relates to an in-situ atmosphere quenching tube furnace and a quenching method thereof. The in-situ atmosphere quenching tube furnace comprises a high-temperature furnace body, a furnace tube penetrates through the high-temperature furnace body, the front end of the furnace tube is connected with a T-shaped tee joint, a sample groove with a long handle is formed in the T-shaped tee joint in the horizontal direction, the T-shaped tee joint is an air inlet end in the vertical direction, a quenching pool connector is vertically formed in the rear portion of the furnace tube, and a quenching pool is arranged in the quenching pool connector. A quenching pool is connected below the quenching pool connector, the rear end of the furnace tube is an air outlet end, and the air outlet end is connected with a hose. Through a full-sealed operation chain and precise time sequence control, full-flow atmosphere protection from high-temperature treatment to ultra-fast cooling of the nano material is realized, grain boundary oxidation and element segregation are effectively inhibited, quenching treatment of materials extremely sensitive to oxygen, water and carbon dioxide is supported, and the service life of the nano material is prolonged. The problem of material decomposition caused by temporary air exposure of traditional open or semi-closed equipment is solved.

The utility model provides a kind of steeling film with good protection, including steeling film body, the clamping groove is opened in steeling film body, clamping groove is provided with clamping strip, and clamping strip is integrally connected in the back of protective frame, the front side of steeling film body is connected in protective frame, the left side and the right side of protective frame are integrally connected with protective ear, the left side and the right side of steeling film body are respectively provided with protective ear.The utility model realizes the protection to mobile phone display interface by protective frame and steeling film body, and protective ear realizes the protection to the left side and the right side of mobile phone, improves protective performance.

This application discloses a rotating bracket for connecting a display screen panel, comprising a positioning mechanism, a connecting component, and a power component. The positioning mechanism includes a positioning element and a sleeve element. The sleeve element has a first abutting portion, and the positioning element is partially housed within the sleeve element and abuts against the first abutting portion. The connecting component includes a first end and a second end disposed opposite to each other. The first end has a plurality of mounting slots, and the positioning mechanism is partially disposed within the mounting slots. The second end is used to connect to the display screen panel. The power component is connected to the first end and abuts against the positioning element. This application also provides a display. The rotating bracket and display disclosed in this application, by using a sleeve element to abut against the power component and springing open when the pressure exceeds a preset value, achieve protection for the power component, providing a beneficial effect of high safety.

This application discloses a design method for an optoelectronic imaging system with laser protection and privacy protection functions, relating to the field of optoelectronic imaging. The method includes: determining an optimized point spread function based on preset point spread distribution characteristics, target energy divergence, and point spread radius using an optical-algorithm joint optimization framework; determining an initial phase distribution based on imaging parameters using the Gerchberg-Saxton algorithm; adjusting the initial phase distribution using a stochastic gradient descent algorithm, guided by the difference in energy divergence of the point spread function, to determine the optimized phase distribution corresponding to the optimized point spread function; and using the optimized phase distribution to load the phase modulation component of the optoelectronic imaging system. This application can achieve high-quality optoelectronic imaging with laser protection and privacy protection capabilities.

A combined switch with a large current protection function comprises at least two-pole frame type switches and at least one-pole fuses, and the at least two-pole frame type switches and the at least one-pole fuses are combined into a whole to be installed in a direct-current power system to control on-off of the direct-current power system. According to the combined switch, the frame-type switch and the fuse are combined into a whole, the size of the whole occupied space of the switch is reduced, the application range of the switch is expanded, meanwhile, the use amount of connecting copper bars between the frame-type switch and the fuse is reduced, the product cost is saved, fusing indication of the fuse can be integrated to a secondary terminal of the frame-type switch, and the service life of the switch is prolonged. The wiring is convenient, and the wiring difficulty is reduced; on the other hand, the frame-type switch and the fuse are combined into a whole, the current protection matching degree is improved, large electric quantity overload protection of the direct-current power system is achieved, additional model selection and construction are not needed, the fuse can be disassembled, assembled and maintained from the front face, and the maintenance difficulty is reduced.