100results about How to "No overload" patented technology

The invention discloses an electric power-assisting braking mechanism and a control method of the electric power-assisting braking mechanism. The electric power-assisting braking mechanism comprises a power-assisting motor, an intermediate shaft, a locking device and a braking power-assisting mechanism. The output assisting power of the power-assisting motor is transmitted to the braking power-assisting mechanism through the intermediate shaft; one end of the braking power-assisting mechanism is connected with a braking pedal assembly, and the other end of the braking power-assisting mechanism is connected with a master cylinder push rod; the locking device and the intermediate shaft are jointed functionally. When the locking device acts on the intermediate shaft, the intermediate shaft stops rotating, and the reaction force, for the braking force, produced by the master cylinder push rod is transmitted to the intermediate shaft through the braking power-assisting mechanism from the master cylinder push rod and offset by the locking device acting on the intermediate shaft. By applying the electric power-assisting braking mechanism and the control method thereof, the safety of an electric power-assisting braking system can be improved.

The invention relates to a method for rapidly deploying an extensible cluster. The method is implemented by using a modified DHCP server, a command line tool and a node daemon, wherein the modified DHCP server is responsible for distributing IP addresses and assigning TFTP server addresses for nodes to be deployed, intensively managing all nodes which are being deployed and are deployed successfully and preferentially selecting a node with the lightest load from the successfully deployed nodes while selecting a TFTP server; the command line tool can dynamically modify configuration information read in when the DHCP server starts so as to make use of hardware resources of the deployed nodes in a better way and perform a deploying process stably; the node daemon is downloaded from a main deployment server after the installation of a script in kickstart is completed, runs automatically and is responsible for reporting the state of the node daemon to the main deployment server, downloading a necessary file, starting TFTP and NFS services and the like. The method can adapt to the extension of cluster scale, achieves deployment effect which becomes more remarkable along with the extension of the cluster scale, has a flexible operation and controls an entire deployment process by configuring files or command lines.

The intelligence valve electrically controlled installment belongs uses the sensor monitor and the micro electron technology control valves uses the electrically operated installment. The main characteristic is: In the mechanism which has has partially established the non- electronic contact type examination output shaft torque value the strength value sensor and the examination valve operates the electro-optical sensor, in the electric motor supposes the temperature sensor; Its electric control are partial is the modular microcomputer control system, in is equipped with AVR high speed to insert the type monolithic integrated circuit the controller module, receives various sensors the monitor signal to control the power control module after processing, then control motor active status. This invention solved the traditional technology to plant the structure complex, security bad, difficult problem and so on reliability, this equipment was the light integration of machinery high tech product, its structure simple, security good, precision high, the reliability was high, could to the valve entire work process realization automatic monitor and the monitoring.

A submersible electrohydraulic control gate valve for mining is provided with a pull weight board which is connected with a gate valve lead screw and an electrohydraulic control system, wherein the electrohydraulic control system comprises an anti-explosion submersible electrical machine which is connected with the gate valve lead screw by an airbag type hydraulic actuator; the pull weight board is connected with the gate valve lead screw by a lead screw connecting rod through corresponding thread, a lock nut locks the pull weight board and the lead screw connecting rod, the lead screw lock nut limits the position of the lead screw connecting rod in the connection of the lead screw and the lead screw connecting rod; and the gate valve is connected with a gate valve wedge plate by the gatevalve lead screw through a T-shaped groove. In the invention, complicated mechanical drive structures are not used, the explosion-proof electric machine is used as a power source, the hydraulic control system is used to drive an oil cylinder and the problems that manual and electric gate valves have bad reliability and high failure rate because the lead screw is used for rotating can be solved, the normal operation of a drainage system can be ensured. The submersible electrohydraulic control gate valve has high reliability and can carry out underwater operation for a long time.

This invention generally relates to audio signal processing apparatus and methods for altering, and particularly increasing, the perceived level of bass frequencies in an audio signal. The apparatus comprises an audio input to receive an audio input signal; a compressor coupled to the audio input and having an output, to compress said audio input signal; a high-cut filter coupled to the output of said compressor to provide a filtered compressor output; and a combiner (206) to combine a signal from said compressor output with a signal from said audio input to provide a combined audio output; and wherein said compressor is configured to distort said audio input signal such that said distortion is perceivable as an increase in the level of bass in said combined audio output.

The present invention provides a Digital Video Recorder (DVR) server and a method for controlling access to a monitoring device in a network-based DVR system, which only performs a user authentication in the DVR server and allows a direct access to a video providing unit by using an authentication token acquired from the authentication procedure, so that traffic of the DVR server can be reduced to maintain security while providing a smooth monitoring service.

The invention discloses an OpenFlow-based distributed controller system in SDN network environment. The system comprises a decision-making device module, a controller resource pool, an OpenFlow control server and OpenFlow switches; the decision-making device module is a core of a function of the whole system and is responsible for detection of active_controllers, i.e. controllers in a working state, and, when the decision-making device module is in an overload state, a load balance decision is made, a new controller is called from the resource pool to join work, load conditions of the active_controllers are periodically checked, and the resource recovery of the controllers is completed; the controller resource pool collects all the active_controllers, i.e., a controller set in an idle stale, and dynamic increase and decrease of the resource pool are controlled by a decision-making device; the OpenFlow control server monitors an own load in real time, and the decision-making device is notified of a load condition when the OpenFlow control server is in an overload state; the OpenFlow control server monitors a command transmitted from the decision-making device furthermore, and completes own load condition reporting or own role switching; and the OpenFlow switches complete a data forwarding function, and participates in a load balance process when the controller is in the overload state.

A small unmanned plane undercarriage buffer relates to the field of aviation aircrafts and solves problems of low buffering efficiency, easy bounce, low reliability of a present flat spring type buffer. The small unmanned plane undercarriage buffer comprises an external cylinder, a first spring on the external cylinder, an internal cylinder having a damping hole, an air sac between the external cylinder and the internal cylinder; an upper joint, a lower joint, a piston rod extending into the internal cylinder, a piston, a damping plate, a pressure-limiting valve, a check valve, a guide sleeve and a locking cover, wherein the piston rod is orderly covered with the piston, the damping plate and the pressure-limiting plate; the piston rod is orderly covered with the check valve, the guide sleeve and the locking cover; the check valve, the guide sleeve and the locking cover are all disposed in the external cylinder; an internal-external cylinder annular oil storage cavity is formed between the internal cylinder and the external cylinder; the damping plate axially moves along the piston rod; the pressure-limiting plate limits maximum damping force to a preset valve during compression stroke; after the locking cover is tightly screwed, the guide sleeve, the check valve and the internal cylinder are axially pressed to the lower joint; the check valve controls communication between the internal-external cylinder annular oil storage cavity and a right cavity of the internal cylinder; and two ends of a first spring are respectively pressed against the upper and lower joints. The small unmanned plane undercarriage buffer possesses high buffering efficiency, uneasy bounce, stable performance and great reliability.

The invention discloses a conveniently loading twin-screw extruder which comprises a rack. The upper part of the rack is fixedly connected to a supporting seat through a connecting rod, a conveying motor is mounted in a U-shaped slide, a rotating shaft is rotatably mounted on one side of the U-shaped slide through a supporting bearing, a first spring is connected to the rotating shaft in a sleeving manner, one side of the U-shaped slide is fixedly connected to an insertion rod, a second spring is connected to the insertion rod in a sleeving manner, a screw is thread-mounted on a fixed plate, one end of the screw is fixedly connected to a bushing, an adjusting hand wheel is fixedly mounted at the other end of the screw, a sealing bearing is fixedly mounted on the rotating shaft, a piston block is connected to the sealing bearing in a sleeving manner, and one end of the rotating shaft is fixedly connected to a spiral conveying blade. By means of resetting and pressure balancing characteristics of the springs, the conveniently loading twin-screw extruder feeds materials continuously and stably, is simple in structure and easy to operate and implement and is convenient to adjust the feeding pressure reasonably according to an actual production condition, so that the service life of the conveying motor is prolonged.

The application discloses a response method and device for a service request. The method comprises the steps of: by a server, receiving the service request; acquiring each current operation parameter of the server; according to each operation parameter, determining a bearing capacity predicted value representing that the server processes the service request; according to the bearing capacity predicted value, determining a time-out period corresponding to the service request; and according to the time-out period, carrying out processing on the service request. Different from the prior art, the response method and device disclosed by the application predict out an operation state of the server after the server processes the service request according to each service request and an operation state of the server at a current moment so as to allocate the corresponding time-out period to the service request according to the predicted operation state. Such mode not only ensures that the reasonable time-out period is set for the fickle service request, but also ensures that the operation state of the server cannot generate an overload phenomenon.

A mechanical lower forging extrusion and material ejection device of a forging mechanical press comprises a crank shaft arranged on a machine body; one end of the crank shaft penetrates through the machine body and is provided with an eccentric sleeve; a connection rod is installed on the eccentric sleeve, an upper pull rod is hinged to the lower end of the connection rod, and the lower end of the upper pull rod is connected with a lower pull rod through a belleville spring; the lower end of the lower pull rod is hinged to one end of a lever; the upper pull rod and the lower pull rod are installed on a bracket, and the bracket is connected with the machine body; a long hole is formed in the middle of the lever and internally provided with a third pin shaft, and the third pin shaft is arranged on a support fixedly connected with the bottom of the machine body; and the other end of the lever is provided with a rolling wheel making contact with the bottom of a material ejection seat, an ejection plate is arranged at the upper end of the material ejection seat, the two sides of the ejection plate are provided with air cylinders correspondingly, and a plurality of upper ejection rods are arranged at the upper end of the ejection plate and are installed in a workbench. The mechanical lower forging extrusion and material ejection device has the advantages of having a synchronous forging extrusion function or a drawing function or a asynchronous ejection function, and being diversified in purpose, adjustable in lower forging extrusion force or ejection force, capable of preventing overload, long in service life, high in product quality and the like.

The invention discloses a water conveying device for a high floor. The water conveying device comprises a main hollow housing. According to the water conveying device disclosed by the invention, a turbine element is changed to be in a longitudinal direction and realizes controllable pressure conveying, so the water conveying efficiency is obviously improved, water can be conveyed to a higher distance, repeated conveying is reduced, and high practicability is realized; moreover, the water conveying device comprises a first large-size pressure liquid one-way flowing control mechanism which can realize that the liquid enters a liquid compression position in one direction from a water storage position; besides, the water conveying device comprises a second large-size pressure liquid one-way flowing control mechanism; by utilizing the characteristics of the first large-size pressure liquid one-way flowing control mechanism and the second large-size pressure liquid one-way flowing control mechanism, a discharging effect is achieved; moreover, the water conveying device comprises a maximum rotation force control and protection mechanism and a universal rotating connecting mechanism, wherein the universal rotating connecting mechanism can be used for connecting a longitudinal moving component and a component which moves in a rotation angle, thus the movement direction of the componentis changed, and a liquid compression driving effect is achieved.

The invention relates to a clutch-type electric screw press which comprises a frame, a driving motor which is arranged above the frame, a clutch flywheel which is driven by the driving motor, a clutch which is arranged on the clutch flywheel, a friction disc which can drive the clutch to rotate after the clutch is jointed, an electric flywheel which is fixed with the friction disc and which is driven by the motor, a screw rod which is fixed on the electric flywheel and a slide block which is arranged at the lower part of the screw rod and which is provided with an internal thread. The clutch-type electric screw press of the invention has large capacity, wide technical adaptation range, strong reliability and safety, long service life and low total power of the motor and can be widely applied in the pressure shaping technique.

The invention discloses a three-phase bridge PWM converter. The three-phase bridge PWM converter comprises a first bridge arm circuit, a second bridge arm circuit and a third bridge arm circuit which have the same connecting mode. One end of each bridge arm circuit is connected with the positive electrode of a capacitor, and the other end of each bridge arm circuit is connected with the negative electrode of the capacitor. Each bridge arm circuit comprises two IGBTs which are in series connection, and each IGBT is in parallel connection with a diode. The invention further discloses an active power filter which is provided with the three-phase bridge PWM converter. By means of the three-phase bridge PWM converter and the active power filter formed by the same, harmonic waves and idle work with the variable frequency and size can be compensated, the defect of the active filter can be overcome, and the compensation characteristic better than that of the active filter can be obtained.

The invention discloses a transmission network dynamic reconfiguration method based on a 3 / 2 wiring mode. The transmission network dynamic reconfiguration method comprises the steps of: constructing atopological structure and parameter model of a power grid real-time mode or a mode to be studied, and evaluating capability and risks of independent district-wide operation of district power grids ofinterest; evaluating benefits and potential risks of electromagnetic looped network operation formed by the district power grids, and analyzing a cost of solving the electromagnetic looped network risks; analyzing a 3 / 2 wiring string configuration method in a transformer substation, and providing a dynamic reconstruction scheme for solving the electromagnetic looped network risk problem; and considering power supply reliability of a normal mode and potential risks of an accident mode, and deciding a district power grid operation mode optimal arrangement scheme and a power grid dynamic reconfiguration suggestion comprehensively. The transmission network dynamic reconfiguration method based on the 3 / 2 wiring mode avoids the load flow from shifting within the electromagnetic looped network in the accident mode, does not cause overload of low-voltage level equipment or damage to the system stability, and improves the operation safety of the system.

The invention provides a food waste treatment device which comprises a treater (101), a spiral body (111) driven by an engine, a tail end cover, shafts (105), mixing vanes (106), and a heater (108), wherein the treater (101) is provided with tube-shaped funnels (109); holes are formed outside the treater (101); the tail end cover is articulated with a plug mesh; the shafts (105) rotate in the treater according to a centrifugal force principle; the mixing vanes (106) are formed radioactively on the shafts and are linked with the shafts (105); and the heater (108) is arranged at the lower end at the inner side of the treater (101) and is used for heating food. The food waste treatment device provided by the invention can be used for fermenting food waste and recycling the fermented food waste, and especially the overload phenomenon can not be generated on a fermentation machine, and therefore, the food waste treatment device can not break down or be damaged, and shortens the food waste treatment time greatly.

The invention discloses a method and system for realizing server load balance. The method for realizing server load balance comprises the steps of: at a client side, sending a request for calling actual servers; at an actual server side, acquiring state information of the actual servers according to configuration, calculating the score of the load of the current actual server according to the state information, and reporting a corresponding scoring result; and, at a distribution server side, receiving scoring results of loads of all the actual servers, furthermore, dividing the priority processing levels of all the actual servers according to the scoring results, and, when the request for calling the actual servers and sent by the client side is received, distributing the actual servers corresponding to the priority processing levels according to the client permission. By means of the technical scheme in the invention, each actual server can be sufficiently used; furthermore, overloadof the actual server, which is poor in performance, can be avoided; a client having high priority can be rapidly responded; and thus, the user experience is improved.

The present invention relates to a comber (1) which comprising a plurality of combing heads (K1-K8) disposed adjacent to each other in a row, the combing heads are driven by a driving device, wherein a sliver (B) formed on the combing heads is supplied to drafting device by the guider (T, FB), then the sliver (3) on the drafting device is transported to the placing device (BA) on the end of the comber. In order to reduce the driving load meanwhile keep the operability of the drafting device and the sliver placing device, at least two groups of combing heads (G1,G2) are provided, each of the groups are connected to the driving device through at least one common driving element, the driving device is arranged between a group of combing heads (G2) and the sliver placing device (BA).

A baler comprises a baling chamber (C) that includes a bale-forming channel having at least one adjustable friction control element (16), a plunger (D) mounted within the channel and a rotary drive mechanism (8) for driving reciprocating movement of the plunger. A control system (22) controls operation of the baler, the control system being configured to determine an actual maximum torque value associated with the rotary drive mechanism (8), compare the actual maximum torque value with a selected desired maximum torque value and adjust the friction control element (16) to regulate the actual maximum torque value according to the desired maximum torque value.

The invention relates to a flameproof submersible electric pump for dual-cooling efficient mining. According to the flameproof submersible electric pump, an oil-immersed motor as well as a water and oil resistant winding wire are adopted; a closed ring-shaped pressure regulating capsule is arranged in the inner cavity of the motor; a dual-cooling structure that strong water cooling in the outer cavity of the motor and self-circulation oil cooling in the inner cavity of the motor are combined is adopted for motor cooling; a mixed flow blade structure is arranged in front of the inlet of an impeller, a turbulent-flow-free balancing axial thrust technology is adopted for the inlet of the impeller, and no axial thrust balancing hole is formed, so as to solve the problem of liquid flow turbulence at the inlet of the impeller as well as effectively improve the axial thrust balancing effect and the pumping efficiency; and an electric pump shaft is in rolling bearing connection with an upper bearing seat and a lower bearing seat, so as to eliminate the phenomenon of eccentric abrasion caused by an improper electric pump mounting position. The flameproof submersible electric pump provided by the invention has the beneficial effects of being simple in structure, high in reliability, strong in practicability, efficient, and good in heat dissipation performance; furthermore, the flameproof submersible electric pump is simple to mount and wide in using range, and can be operated under various working conditions; and wastewater is pumped thoroughly, the total head is prevented from overloading, and the service life of the flameproof submersible electric pump is long.

The invention discloses a straw stirring and drying device, and relates to the technical field of environmental protection. The straw stirring drying device comprises a box, a feeding hopper, an intermittent opening and closing mechanism, a primary conveyor belt mechanism, a stirring mechanism, a secondary conveyor belt mechanism, a driving mechanism and a drying assembly. The intermittent openingand closing mechanism capable of achieving intermittent opening and closing is arranged at the position of the feeding hopper, intermittent discharging at the position of the feeding hopper can be achieved, traditional continuous discharging is changed, and straw on the primary conveyor belt mechanism is conveyed section by section. Particularly, hot-blast air can enter a straw stack from the side face of the straw, and the straw can be dried. Meanwhile, due to the fact that straw entering the stirring mechanism is intermittent every time, the straw can be matched with the follow-up stirringmechanism to achieve the good mixing effect. In addition, due to the fact that no overloaded condition exists, the fault rate of equipment is lowered.

The invention relates to a rigidity testing device and method for an electromechanical actuator. The rigidity of a test stand body is improved to prevent deformation of the test stand body before deformation of a tested electromechanical actuator. With dual guide rails, any adverse effect on the rigidity test by the low rigidity of the test stand body is prevented. Because of a symmetric hand-operated loading mode distributing a lead screw I and a lead screw II at two sides of a tested piece symmetrically, a phenomenon that the tested electromechanical actuator is damaged due to the too largeactive loading control force is avoided. A laser sensor I and a laser sensor II that have high displacement measurement precision are employed and are arranged on one parallel line, so that the measurement accuracy is improved; the lead screw II and the lead screw I that are T-shaped large-screw-pitch threads and have self-locking functions cooperate with a lead screw connecting gear I, a lead screw connecting gear II, a boost gear, and a boost gear force arm to realize loading forces; and on the basis of direct series connection of a pull pressure sensor with the inside of the tested electromechanical actuator, the loading force testing becomes accurate.

The invention discloses an efficient non-overloading submersible sewage pump impeller suitable for sewage treatment. The efficient non-overloading submersible sewage pump impeller comprises two to four blades. The inlet edges of the blades extend forwards and are in a curve shape. The blade outlet setting angle beta2 ranges from 12 degrees to 25 degrees. The inlet edges of the blades extend towards a front cover plate, and inlets are in a curve shape. The impeller is a blade-type centrifugal impeller of a closed structure. The area ratio of the impeller outlet area to the throat area ranges from 1.5 to 2.0. By the adoption of the impeller designed through a method, a relatively flat shaft power curve can be obtained, so that no overload exists within the range from the minimum flow point and the maximum flow point in engineering application of a pump, and meanwhile the high through capacity and high efficiency of the submersible sewage pump are guaranteed.

The invention discloses an exhaust system heat shield for a supercharged engine. The exhaust system heat shield comprises a heat shield body in which an air vent formed to vent hot air in a hot end region of the exhaust system; the heat shield body is provided with an air storage chamber and an air flow chamber inside, an air inlet of the air storage chamber is connected to an air outlet of an airleakage valve through a pipeline, the air storage chamber is communicated with the air flow chamber, and a plurality of air vent holes communicating the air flow chamber with the hot end region of the exhaust system are formed in the side wall of the air flow chamber near the hot end of the exhaust system. The heat shield insulates the exhaust system, utilizes pressurized intercooled air to coolthe exhaust system and then dissipate heat.

The invention relates to the technical field of electric matched products, in particular to an energy-saving intelligent filter compensation metering comprehensive protection automatic transmission which comprises a box body. The inside of the box body is provided with an active power filter, a connection electric reactor, an isolation switch, a current transformer and an outgoing breaker. The active power filter is connected to the secondary side of the current transformer of a grid through the connection electric reactor. The upper end of the isolation switch is directly connected with the secondary side of the current transformer of the grid, and the lower end of the isolation switch is connected with the outgoing breaker through the isolation switch in an outgoing mode. According to the automatic transmission, harmonic currents on a bus are eliminated in real time, the operation efficiency of the transformer is improved, operation safety of the transformer and electric equipment is guaranteed, the phenomena of abnormal operation of the transformer, system resonance and compensation capacitor overflowing caused by harmonic currents are avoided, the service life of the equipment is prolonged, and the phenomenon that a capacitance box often fails in the prior art is avoided. The box transformer structure technically has the advantages of being modularized, small in size, attractive in appearance, safe and reliable in operation, convenient to maintain and the like.

The invention relates to a photoelectrical conversion module of a concentrating photovoltaic system, which belongs to the technical field of solar utilization technique. The photoelectrical conversion module mainly comprises a strip-like lens array (19), a silicon battery (10), a flexible electrode (18), a conductive heat dissipation metal component (13), etc. The photovoltaic battery cell (10) has a strip shape, and the flexible contact electrode (18) with larger contact surface and the conductive heat dissipation metal component (13) with electrical conduction and heat dissipation functions are packaged on both sides of the upper surface of the photovoltaic battery cell (10) in a contact manner. The strip-like condensing lens array (19) is used for condensing parallel beams vertical to the upper surface, and the beams irradiate the region between two flexible electrodes on the surface of the photovoltaic battery cell after being condensed and diverged for one time. Continuously reflected by an upper space with a reflection layer, the most of the light beams are absorbed by the photovoltaic battery cell. The metal component (13) can transfer the heat of the photovoltaic battery cell (10). The solar battery assembly having the structure has smaller size and larger condensation multiple.

The invention discloses a solar heating bathing and winter heating system for temporarily-built facilities of a worker living quarter. The system comprises a heat source, a shower pipeline circulating system, a first circulating system of the heating system, a second circulating system of the heating system and a PLC computer control cabinet; the heat source comprises a solar heating system and an auxiliary electric heating system; the shower pipeline circulating system is connected to a heating and heat storing water tank and comprises standby and used parallel temperature control switch control water pumps, gate valves and a group of shower nozzles which are sequentially connected; the first circulating system of the heating system comprises a water feeding loop and a water returning loop of the first circulating system, and the water feeding loop and the water returning loop are connected between the heating and heat storing water tank and the first secondary side of a plate heat exchanger; the second circulating system of the heating system comprises a water feeding loop and a water returning loop of the second circulating system, and the water feeding loop and the water returning loop are connected between the second secondary side of the plate heat exchanger and a heating pipeline of a temporarily-built house. According to the system, the technical problems of hot water bathing and winter dormitory heating for workers of the building industry in temporary accommodations can be solved.

The invention discloses a power distribution cooperation system based on an intelligent charging energy router and a cooperation method thereof. The power distribution cooperation system based on theintelligent charging energy router comprises a transformer, the intelligent charging energy router, a charging pile and other loads. The system further comprises at least one load measuring device, wherein the load measuring device is used for measuring electric power information of a load in the power loop. The intelligent charging energy router receives an actual power message reported by the load measuring device, and calculates the maximum power limited and output by the intelligent charging energy router; and the intelligent charging energy router adjusts the actual control power of the connected charging pile based on the maximum output power limited by the intelligent charging energy router so as to adjust the total load of the transformer. By controlling the power of the charging pile connected with the intelligent charging energy router, the intelligent charging energy router becomes a power distribution elastic load of the transformer, so that the real-time utilization rate of power distribution resources is improved on the premise that operation safety is kept.

The invention discloses a transformer station power supply range optimization method suitable for seasonal changes of loads, and the method enables the positions of transformers to serve as discrete cell points, and a Voronoi spatial pattern is generated through a simulation cell growth method. Moreover, transformer load level multi-load scene security constraint check is added in a growing process of each cell, and the method avoids the overloading caused by a condition that a transformer station cannot adapt to the seasonal changes of loads while reducing the largest power supply range and reducing the network loss and voltage drop loss. The method comprises the following steps: (1), simulating the growth of cells; (2), carrying out the multi-load scene security constraint check; (3), arranging a power supply range. The method guarantees that the transformer station is not overloaded during Spring Festival through the setting of the growing speed of the cells and the multi-load scene security constraint check mechanism while the power supply load moment of the transformer station is reduced as much as possible at ordinary time. The method is small in investment, is simple in operation and maintenance, is stable in supply region, and is suitable for all urban and rural regions.

The invention relates to the technical field of circuit protection, and discloses a circuit overload protection and automatic reset device. The right side of a piston is provided with a temperature sensing block, the inner bottom wall of an inner shell is provided with a spring, the inner shell is internally provided with a fixing plate and a connecting plate, the left side of the fixing plate isprovided with a fixing wheel, the right side of a first supporting rod is provided with a first contact point, the inner top wall of the inner shell is provided with a fixing rod and a second supporting rod, the bottom of the fixing rod is provided with a rotating shaft, the left side of the second supporting rod is provided with a second contact point, and a fuse is arranged between the second contact point and the first contact point. When the circuit is overloaded, the piston pushes the temperature sensing block to move, the temperature sensing block pushes the lower section of a movable plate to move rightwards through the connecting rod, the upper section of the movable plate is driven to move upwards, the left side of the fuse moves downwards, and the circuit forms an open circuit. When the temperature returns to be normal, the piston moves leftwards, the temperature sensing block drives the movable plate to move leftwards through the connecting rod, the movable plate drives thebump to move downwards, the fuse resets, and the circuit forms closed circuit.