641results about How to "Avoid the risk of electric shock" patented technology

The invention discloses an electric power supply device with an electric shock protection function. The electric power supply device comprises a power supply seat and a power supply head, wherein the power supply seat consists of a transmission part and a power supply part; a first threaded rod is arranged in the transmission part and is provided with a guidance sliding block; the first threaded rod extends to two sides; the left side extension end of the first threaded rod is in running fit connection with a first motor; the right side extension end of the first threaded rod is in rotation connection with a power supply part; the bottom of the guidance sliding block is fixedly connected with the power supply head; the right side end surface of the power supply head is provided with a contact pin; and a second sliding cavity, a power supply cavity and a wire guiding cavity, which are oppositely arranged with the power supply head, are arranged in the power supply part in sequence from left to right. The device has a simple structure, the possibility of accidental electric shock due to an unplugging state can be effectively avoided, in addition, automatic plugging control can be realized, plugging stability is improved, and the possibility of electric shock due to the contact of people can be lowered.

A safety ballast for a discharge lamp capable of interrupting the supply of the electric power upon failure of starting the lamp. The ballast includes a converter providing a DC power voltage from a DC voltage source, a booster providing a boosted DC voltage to a starter which generates, based upon the boosted DC voltage, a starting voltage for starting the lamp, and an inverter receiving the DC power from the converter to provide an AC power for operating the lamp. The booster includes a capacitor which is charged by the DC power and accumulate the boosted voltage. A controller monitors a load condition of the lamp and issues a disable signal when a no-load condition continues over a predetermined starting period. The inverter includes a plurality of switching elements one of which is regulated to be turned on in response to the no-load signal for establishing a supply path of supplying the boosted voltage from the booster's capacitor through the switching element to the starter. The one switching element is also controlled to be turned off in response to the disable signal for interrupting the supply path. Thus, when the no-load condition continues over the predetermined starting period as indicative of the that the lamp has been removed or the lamp reaching its end of life, the booster's capacitor bearing the boosted voltage is disconnected from the starter, applying no voltage to the starter and therefore preventing the starter from being activated to generate unnecessary starting voltage.

The invention discloses an information device, which comprises a base body and a connection part arranged at the left side of the base body. The base body is provided therein with an empty groove. The upper side and the lower side of the empty groove are both provided with a first sliding groove. Each sliding groove is provided with a stud bolt. The left side end of the stud bolt is connected with a motor. The right side inner wall of the empty groove is provided with a first groove part; the left side inner wall of the empty groove is provided with an electrical connection rod. The empty groove is provided therein with a push-and-pull block whose upper side and the lower side probe into the first sliding grooves at the upper side and the lower side of the empty groove and which cooperates and is flexibly connected with the empty groove. The push-and-pull block inside the first sliding grooves is in threaded connection and cooperation with the stud bolt. The left side end face of the push-and-pull block is provided with a first electrical connection hole arranged corresponding to the first electrical rod; and between the left side end face of the push-and-pull block and the first sliding grooves are provided with electrical connection wires. The wall body at the left side of the base body is provided therein with an insertion and combination groove. The right side inner wall of the insertion and combination groove is provided with a second electrical connection rod. The information device of the invention has a simple structure, is convenient to operate, and achieves high security and connection fastening performance.

The invention discloses a charging pile device for electric vehicles. The charging pile device comprises a pile body, a canopy, a supporting post, a base and a plurality of groups of power supply components, wherein the canopy is arranged at the top of the pile body, the supporting post is arranged at the bottom of the pile body, the base is arranged at the bottom of the supporting post, and the power supply components are arranged on the left end face of the pile body. An accommodating cavity is arranged in every power supply component, slide guide cavities are formed in the upper and lower sides of the accommodating cavity symmetrically and provided with screws, the right ends of the screws are connected with first motors, moving blocks are arranged in the accommodating cavities, projecting blocks extending into the slide guide cavities are arranged on the upper and lower sides of the moving blocks symmetrically and are connected with the screws in a thread fit manner, and external thread projecting portions are arranged on the left sides of the moving blocks. The charging pile device for the electric vehicles is simple in structure, high in safety, convenient to use and capable of protecting personnel from electric shock due to touching power supply holes.

A leakage current detection interrupter (LCDI) having open neutral detection. In one embodiment, the LCDI is formed in a plug and includes a circuit interrupter means for breaking a conductive path between line side phase and neutral conductors and load side phase and neutral conductors. A tripping means is coupled to operate the circuit interrupter means to break the conductive path upon the detection of the opening of the line side neutral conductor referred to as open neutral condition. The tripping means, which uses the neutral path as a return path if leakage current is detected, will, with this invention, use a line side ground conductor as a return path if the neutral path is broken anywhere between a service panel entrance and the plug. In response to the opening of the line side neutral conductor or leakage current, the LCDI interrupts the flow of current to a load such as a window air conditioner.

The invention discloses a charging device for an environmentally-friendly new energy electric car. The charging device comprises a charging box body fixed to a wall body, a containing cavity is formed in the charging box body, and first sliding grooves are formed in the upper side and the lower side of the containing cavity correspondingly. A screw is arranged in each first sliding groove, the left side end of the screw of each screw is in power connection with a motor, and a first sinking groove is formed in the inner wall of the right side of the containing cavity. First conductive pillars are arranged on the inner wall of the left side of the containing cavity, and the containing cavity is internally provided with a movable sliding block, wherein the upper side and the lower side of the movable sliding block extend into the first sliding grooves of the upper side and the lower side of the containing cavity correspondingly, and the movable sliding block is connected with the first sliding grooves in a sliding fit mode. The movable sliding block in the first sliding grooves is in threaded and matched connection with the screws, first power supply holes opposite to the first conductive pillars are formed in the end face of the left side of the movable sliding block, and an elastic power supply wire is arranged between the end face of the right side of the movable sliding block and the first sinking groove. An inserting groove is formed in the wall body of the left side of the charging box body, and second conductive pillars are arranged on the inner wall of the right side of the inserting groove. The charging device for the environmentally-friendly new energy electric car is simple in structure, convenient to operate and high in safety and connecting fastening property.

The invention discloses an efficient mixing machine convenient to move rapidly. The efficient mixing machine comprises a base, wherein a machine body is arranged in the center of the upper side of the base, a stirring rotating shaft is vertically arranged in the machine body, a connecting box casing is arranged on the upper right side of the machine body, a first belt pulley and a second belt pulley are arranged on the left and right inside the connecting box casing and connected through a drive belt, the first belt pulley is connected with the top end of the stirring rotating shaft, and a motor case is fixed on the outer wall of the right side of the machine body. The efficient mixing machine convenient to move rapidly adopts the belt pulleys for driving, is safe, reliable and stable in work, has low noise during work and can regulate the running speed; a drive device is arranged on the upper side of the machine body, sealing is not needed to be considered, the production and use costs are reduced, the stirring effect is good, the working efficiency is high, automatic cleaning and automatic discharging can be realized, time and labor are saved, and the working efficiency is further increased; besides, the efficient mixing machine can be moved rapidly and is high in convenience.

The invention discloses a composite vacuum pre-stressed soft foundation comprehensive reinforcement method, which is characterized in that the construction method comprises a vacuum pre-stressed precipitation and an electroosmotic precipitation. The execution steps are as follows: a) Establish a yard drainage system; b) Perform vacuum pre-stressed precipitation; c) Perform electroosmotic precipitation at the same time of step b), or when water output is lowered in step b; d) When degree of consolidation reaches a level higher than or equal to 85 percent, steps b) and c) are over to enter a low-energy forced ramming; e) Perform vibration steamroll to flatten the yard. Through composition of utilization of the two construction methods of the vacuum pre-stressed and electroosmotic precipitations, the invention retains advantages in prior vacuum pre-stressed construction methods. Meanwhile, in combination with the electroosmotic precipitation, the invention fulfills application of the vacuum pre-stressed construction method in sludge-like (low permeation factor) soft earth foundations, so that the reinforcement depth of the soft earth layer can be increased, but construction period can be shortened.

The invention discloses a welding device. The welding device comprises an electricity connecting base and a plug part arranged on the left side of the electricity connecting base. The electricity connecting base is internally provided with a cavity. First sliding grooves are formed in the upper side and the lower side of the cavity. Each first sliding groove is internally provided with a spiral rod. The left side end of each spiral rod is connected with a motor. A first groove hole is formed in the inner wall of the right side of the cavity. First electricity connecting rods are arranged on the inner wall of the left side of the cavity. The cavity is internally provided with a sliding block of which the upper side and the lower side enter the first sliding grooves in the upper side and the lower side correspondingly and are matched and connected in a sliding mode. Sliding block bodies in the first sliding grooves are matched and connected with the spiral rods in a spiral whorl mode. The left side end surface of the sliding block is provided with first energizing holes opposite to the first electricity connecting rods. A circuit is arranged between the left side end surface of the sliding block and the first groove hole. An insertion cavity is formed in the wall body of the left side of the electricity connecting base. Second electricity connecting rods are arranged on the inner wall of the right side of the insertion cavity. According to the welding device, the structure is simple; operation is convenient and rapid; power supply connection can be automatically controlled; the insertion-connection stability and safety are high; an electric shock hazard caused by accidental touching is prevented; and the power supply requirement of existing electric welding machines is met.

The invention discloses a heating device for a gas humidifier. The heating device comprises a casing, a heating disc assembly and a center control module. The heating disc assembly is provided with a heating disc and is installed on the casing, and the heating disc is exposed above the casing. The center control module comprises a power source assembly, a human-computer interface and a main control circuit board assembly, wherein the power source assembly and the main control circuit board assembly are fixedly installed on the casing and accommodated in the casing, and the human-computer interface is installed on the casing and exposed on the side of the casing. The human-computer interface is electrically connected with the power source assembly and the main control circuit board assembly and operates the center control module by controlling and sending data. By optimal design of the casing, danger of burning and scalding and faults such as open circuit are effectively avoided, and danger of electric leakage and electric shock can be effectively avoided by optimal design of the heating disc assembly. By optimal design of the center control module, a whole humidifying system is high in intelligence degree, safe and reliable.

The present invention provides a motion control method for a robot and a computing device. The method includes the following steps that: a movement area and a movement forbidden area are arranged in the plane work map of the robot; the position information of the robot is monitored in real time; and the robot is controlled to execute a cleaning procedure within the movement area according to the position information; and the robot is prohibited from entering the movement forbidden area according to the position information. According to the motion control method for the robot and the computingdevice of the invention, the movement area and the movement forbidden area are set; the robot is controlled to perform cleaning operation in the designated movement area; arrangement regions for arranging curtains, wires, and other items are set to be the movement forbidden area; the robot can be prevented from entering the movement forbidden area and stuck on the items; and the robot cleaner can be prevented from being exposed to the danger of electric shock.

The invention discloses a solar wireless electric vehicle charging station, which comprises a photovoltaic array device, a DC (direct-current) busbar device composed of a DC power distribution cabinet, a DC / DC converter, a high-frequency inverter and a wireless charging transmitting terminal, wherein the photovoltaic array device is connected with the DC / DC converter through the DC busbar device, the high-frequency inverter is connected with the DC / DC converter, and the wireless charging transmitting terminal is connected with the high-frequency inverter. Compared with the prior art, the solar wireless electric vehicle charging station has the advantages of achieving the purpose of charging an electric vehicle by a solar photovoltaic power generation system, avoiding the electric shock hazard and the electric energy consumption during charging operation of a plug by adopting a magnetically coupled resonance wireless charging technology, realizing an intelligentized charging technology as well as safety and convenience during charging of the electric vehicle, effectively reducing the capacity of a storage battery of the electric vehicle, lightening the self weight of the electric vehicle, reducing the manufacturing cost of the electric vehicle, improving the effective utilization rate of energy sources and promoting the development of the electric vehicle.

The invention relates to the non-contact control field and discloses a non-contact control method and equipment based on gestures. The method comprises steps that, S1, multiple pre-stored gesture shapes associated with different control signals are pre-stored; S2, point cloud data in a three-dimensional space of each point of gestures sensed through a point cloud mode is received; S3, the point cloud data is processed to form sensing gesture shapes in matching with the point cloud data; and S4, the sensing gesture shapes are matched with the pre-stored gesture shapes, if the matching degree of the sensing gesture shapes and one of the pre-stored gesture shapes reaches the preset degree, a control signal associated with the pre-stored gesture shape is emitted to control a to-be-controlled object. Compared with the prior art, the to-be-controlled object can be remotely controlled by a user through simple gestures, no direct contact with the to-be-controlled object is required, and a problem of electric shock danger caused by electric leakage of the to-be-controlled object can be settled.

The embodiment of the invention relates to an ultrasonic transducer, comprising a shell, an emitter arranged at the top of the shell, a rear-end mass block arranged at the bottom inside the shell and a piezoelectric element fixed between the emitter and the rear-end mass block by a bolt, wherein the emitter comprises a working part with a spherical convex top surface. The ultrasonic transducer has the following beneficial effects: the transducer can be directly contacted with the human body without using a stainless steel plate for conduction, thus avoiding energy loss caused by conduction and giving full play to the ultrasonic power; the transducer has the advantages of wider working frequency bandwidth, concentrated ultrasonic energy and uniform strength; an electrodeless ceramic wafer is arranged between every two piezoelectric ceramic wafers, and loops can not be formed even if short circuit caused by burst of the piezoelectric ceramic wafers happens, thus effectively avoiding the human body from possible electric shock due to contact.

The invention discloses a power distribution cabinet. The power distribution cabinet comprises a cabinet body with an accommodating cavity in the interior; a drawer part is arranged in the cabinet body; an inclined sliding groove, a locking groove and a power connection groove are formed in the left side end plane of the drawer part; a first groove is formed in the cabinet body opposite to the inclined sliding groove; a second groove is formed in the cabinet body opposite to the locking groove; a transmission cavity and a power supply sliding groove opposite to the power connection groove are formed in the cabinet body below the second groove; the left side of the bottom of the power supply sliding groove is connected with the top on the right side of the transmission cavity; a partition plate is arranged between the first groove and the second groove; a key groove rotary shaft is arranged in the first groove; the bottom of the key groove rotary shaft runs through the partition plate and is in transmission connection with a threaded rod; the threaded rod extends into the second groove and extends downwardly; and the downward extension section of the threaded rod runs through the cabinet body and extends into the transmission cavity.

The composite vacuum pre-pressing soft foundation stabilizing process with vacuum pressing precipitation and electroosmosis precipitation includes the following steps: 1. establishing a site draining system, arranging a vacuum electroosmosis device, and setting a vacuum pressing sealing layer on the ground; 2. turning on the vacuum pump for vacuum pressing precipitation; 3. activating the circuit for vacuum electroosmosis precipitation; and 4. turning off the vacuum electroosmosis device and the vacuum pump after reaching the consolidation degree of 85 % and performing the post ground treatment and further stabilizing. The present invention combines vacuum pressing precipitation and electroosmosis precipitation to reach high consolidation degree of the soft foundation and shorten the construction period.

The invention discloses a portable cutting device. The portable cutting device comprises a cutting machine and a socket, wherein the cutting machine comprises a cutting table, a cutting gear and a base, the cutting gear is embedded into the cutting table and is connected with the cutting table in a rotating and matching way, the base is arranged at a bottom part of the cutting table, a pin is arranged at a bottom part of the socket, a power line is arranged at a bottom part of the pin and is connected with a bottom surface of a rear side of the base, an accommodating bin is arranged at a bottom part of the socket, sliding grooves are formed in a left side and a right side of the accommodating bin, studs are arranged in the sliding grooves, top parts of the studs are connected with a motor, a lifting plate is arranged in the accommodating bin, two side ends of the lifting plate penetrate through the sliding grooves and are in threaded connection with the studs in a matching way, a lifting block is arranged at a bottom part of the lifting plate, the bottom part of the lifting block penetrates through a bottom wall of the socket and is movably connected with the bottom wall of the socket in a matching way, first sliding grooves are symmetrically formed in a left part and a right part of the lifting block, hole grooves are formed in top parts of the first sliding grooves, and a connection groove is formed in an end surface of the bottom part of the lifting block. The portable cutting device is simple in structure and high in safety, and is convenient to operate, and automatic connection power supply can be achieved.

The present invention discloses a probe expanding device of electronic equipment and a method for controlling expanding probe by the host machine, wherein the device comprises a body and a probe expanding device plug. The body is provided with a controller, a probe signal commutation circuit, a first probe socket, a second probe socket and a probe expanding device plug. A host machine determines whether the reading of expanding probe is finished and enquires the on-position state of probe through a controller of probe expanding device. The probe which is to be executed with information reading transmits a power supply enable signal through a controller for supplying power to the corresponding probe. The communication interface of corresponding probe is gated for reading probe information. When the host machine confirms that the probe information reading is finished, a probe de-electrifying command is transmitted to the controller by the host machine. The controller controls the power supply enable signal. The corresponding probe is de-electrified and the operation is finished. An interface communication connection is realized between the probe expanding device and the host machine device according to the invention. An inner controller analyzes command of host machine system and realizes the functions of probe identifying, working probe switching, etc. The control to various functions is conveniently and reliably executed. The automatization degree of operation is high.

The invention discloses an electric leakage induction and protection control system on an electric water heater. The electric leakage induction and protection control system on the electric water heater comprises a control module; a water tank filled with water is provided with an electric heating device; a power supply switch is arranged between the electric heating device and a power supply; the water outlet end of the water tank is connected with an electric insulation water tube; and the electric insulation water tube is also provided with a center-penetrating type current mutual inductor detection module and an effluent control valve. The electric leakage induction and protection control system aims to detect the magnitude of leakage current by the center-penetrating type current mutual inductor detection module; when the control module judges that the leakage current exceeds a preset value to cause harm to a user, the power supply switch is controlled to be cut off; after the power supply switch is cut off, the effluent control valve is controlled to cut off the effluent when the electric leakage current is detected to still exceed the preset value so as to prevent the electric leakage current from contacting with a user via water flow; in addition, because the electric insulation water tube is arranged between the water tank and the water outlet end, the leakage current can be prevented from contacting with the user via equipment so as to guarantee the safety of the user.

The invention discloses an automatic replacement device of a fuse used for a power distribution cabinet. The device comprises a machine body. A storage box is arranged on a top of the machine body, first gears are arranged on two sides of one end of the storage box, and an object inlet slot is arranged at a position of the top of the machine body, wherein the position is near the first gears. Guide rails are arranged on the two sides of an internal portion of the object inlet slot, a second gear is arranged on a bottom of each first gear, and a rotating ring is arranged on one side of the second gear. In the invention, a rotation shaft is used to drive the storage box to rotate to the position of the object inlet slot. Through a frame of the object inlet slot, a telescopic block is extruded so as to drive a slide rod to slide. A pressure spring pushes a fusing block into the machine body through a top plate. The first gears drive a rotation ring to rotate. The second gears drive a third gear to rotate. A slide plate moves towards one side of a clamping plate. The device has advantages that an intact fuse link can be stored in equipment and the fuse link can be replaced automatically to ensure safety.

The invention discloses a direction board device for a bridge. The direction board device for the bridge comprises a base. A pushing cavity is formed in the base. Sliding connection cavities are formed in the upper side and the lower side of the pushing cavity correspondingly. Each sliding connection cavity is provided with a spiral rod, and the right side end of each spiral end is in power connection with a first driver. A sliding connection block is arranged in the pushing cavity. Pushing blocks extending into the sliding connection cavities correspondingly are arranged on the upper side and the lower side of the sliding connection block correspondingly. The pushing blocks are connected with the spiral rods through spiral threads in a matched mode. An external spiral thread joint part is arranged on the left side of the sliding connection block. A storage tank is arranged in the external spiral thread joint part. Sliding holes are formed in the position, on the right side of the storage tank, in the sliding connection block. Plug holes are formed in the corresponding inner wall, on the right side of the sliding holes, of the base. A direction board is arranged on the left side of the storage tank correspondingly. The direction board device for the bridge is simple in structure, convenient to operate and high in safety, power supply connection is firm, and the risk that people get an electric shock when touching the plug holes is effectively avoided.

The invention relates to a high-voltage direct metering device which is attached to a high voltage power-line. The metering device comprises a voltage acquisition unit, a current acquisition unit, a first processing unit, a second processing unit and a transmitting circuit, wherein the voltage acquisition unit is used to directly acquire a first voltage signal from the power-line; the current acquisition unit is used to directly acquire a second voltage signal representing the real-time current value from the power-line; the first processing unit is used to receive the first voltage signal and the second voltage signal, change the signals to real-time voltage value and current value to convert to instantaneous power value, integrate the instantaneous value in a first preset time and output a first energy value signal; the second processing unit is used to receive the first energy value signal to accumulate and form a second energy value signal and transmit the second energy value signal every second preset time; and the transmitting circuit is used to receive the second energy value signal and transmit to a user-side receiving device.

The invention discloses a safety control device of an electric vehicle. A high-voltage battery control module cuts off a first control end of a high-voltage relay and / or a whole vehicle control module cuts off a second control end of the high-voltage relay through an emergency power-off module to make the high-voltage relay cut off, and thus a high-voltage power supply loop of all components of the whole vehicle is cut off. The invention further discloses a safety control method of the electric vehicle. By means of the safety control method and device of the electric vehicle, the high-voltage electricity of the whole vehicle can be effectively cut off in time when a collision occurs, and thus electric shock of people can be avoided; when a slight collision occurs or no electric leakage risk exists, the dynamic property of the whole vehicle can be maintained, and thus the vehicle can quickly leave a dangerous area; the structure is simplified, and safety and reliability are achieved.

An electric heater includes two or more main body insulated sheet heating elements with electrodes and a metal casing bodies, at least one sheet heating element is arranged in each cavity of the metal casing bodies, the electrodes are exposed from the metal casing body. The metal casing bodied are arranged in parallel and certain distance space, such that air are limited to pass through a air duct between the both metal casings, heat radiation fin pieces connected to opposite surfaces of the both metal casing bodies are arranged in the air duct. The electric heater has advantages of environment protection, safety, high heat-exchange efficiency, simple structure, low cost, easy recovery.

The invention relates to an electric welding machine with an excellent radiating function. The electric welding machine comprises an electric welding machine outer shell. Radiating ports are formed in the front side face of the electric welding machine outer shell. Protective nets are mounted on the outer surfaces of the radiating ports. A handle is mounted on the upper surface of the electric welding machine outer shell. A pull rod storage groove is embedded in the upper surface of the electric welding machine outer shell. The front side face and the rear side face of the electric welding machine outer shell are provided with radiating holes. An electrode holder hanging groove is connected with the rear side face of the electric welding machine outer shell. An electric wire storage groove is mounted in the right portion of the electrode holder hanging groove. A storage groove cover is connected with the outer side of the electric wire storage groove. A rainproof groove is formed in the right side face of the electric welding machine outer shell. A control panel is mounted in the rainproof groove. The electric welding machine with the excellent radiating function adopts the design of the radiating ports, a water cooling structure, rolling wheels, a pull rod, the pull rod storage groove, a supporting plate and the rainproof groove, heat can be dissipated conveniently, electric leakage of the electric welding machine can be avoided, and heat can be prevented from being accumulated in the electric welding machine.

The invention discloses a light emitting diode (LED) lamp device which comprises a fluorescent lamp bracket on which an LED tube can be installed and an LED tube arranged on the fluorescent lamp bracket on which an LED tube can be installed, wherein the fluorescent lamp bracket on which an LED tube can be installed comprises a first lamp holder, a second lamp holder, an inductive ballast and a starter holder, wherein the first lamp holder and the second lamp holder are arranged oppositely; the first lamp holder, the starter holder, the second lamp holder and the inductive ballast are electrically connected sequentially end to end; an LED protector for short circuiting of the first lamp holder and the second lamp holder is arranged on the starter holder; the LED protector comprises a mica sheet, two pins and a fuse, wherein the two pins penetrate through the mica sheet and are inserted into the starter holder; and two opposite ends of the fuse are respectively connected electrically with the ends of the two pins far away from the starter holder. The LED lamp device of the invention has simple structure, thereby being convenient for a user in use.

The invention discloses an unmanned bait feeding ship and a control method thereof. The unmanned bait feeding ship is characterized by comprising a bait feeding ship body, and the bait feeding ship body is provided with a storage bin for storing bait, a bait feeding mechanism for feeding the bait in the storage bin into water, a non-contact charging module, a propeller, a camera for collecting animage, a GPS module for precisely positioning the bait feeding ship body, a 4G module for receiving and transmitting a signal to the outside and a control device which is in signal connection with thenon-contact charging module, the propeller, the camera, the GPS module and the 4G module; the storage bin is located on the rear portion of the bait feeding ship body, and the storage bin is providedwith a bait inlet for the bait to enter and a feeding port for the bait to be discharged out of the storage bin; the bait feeding mechanism is a spiral conveyor arranged in the feeding port. By applying the unmanned bait feeding ship, the bait is remotely and precisely fed, and consumption of the labor resources is reduced.

The invention relates to the technical field of power equipment maintenance, in particular to a method for short circuit replacement of an electric energy meter. A base and a plug arranged on the baseare included, and a to-be-replaced electric energy meter and a short circuit assembly which are arranged on the base and connected with the plug are further included. The method includes the steps: the short circuit assembly is inserted into a short circuit hole of the plug connected to the inlet-outlet line end of the to-be-replaced electric energy meterto short out the to-be-replaced electric energy meter; the electric quantity of the to-be-replaced electric energy meter is recorded; the to-be-replaced electric energy meter is removed from a socket and a new electric energy meter is inserted into the plug; and the electric quantity count on the new electric energy meter is changed to be consistent with the electric quantity of the to-be-replaced electric energy meter, and then the shortcircuit assembly is removed from the plug. According to the method for short circuit replacement of the electric energy meter, an incoming wire and an outgoing wire of a zero wire or a firing wire are connected to plugs arranged at the two ends of the same conductive wire correspondingly, or an electric quantity metering electric energy meter shorts out the to-be-replaced electric energy meter toshort out the to-be-replaced electric energy meter, and thus user blackout caused by replacing the electric energy meter is avoided.

The invention provides a socket, which comprises an outer box, an inner box, a core insert clutch device, an elastic support device, a locking device and a temperature-sensing control device, wherein the core insert clutch device comprises a connector and a clamping device; the connector is connected to a support plate; the clamping device is arranged on the connector in a penetrating manner; a top plate of the elastic support device is clamped on a movable groove of the support plate; meanwhile, the top plate is connected with a limiting rod in a sleeving manner; a spring is arranged between the top plate and the limiting rod in the penetrating manner; the locking device is used for carrying out limiting on the top plate; the temperature-sensing control device comprises an LN pole metal sheet, a temperature-sensing element and a top rod; the LN pole metal sheet is connected with the clamping device; the temperature-sensing element is connected with the LN pole metal sheet and the top rod respectively; and the top rod is propped against the locking device. By the socket provided by the invention, once an open fire or a high temperature is generated in the socket, a fire prevention and cut off of a power supply can be achieved by automatically sealing air; the condition of a short circuit caused by water and dust entrance can be prevented; an electric shock caused by a misoperation of a child can be prevented by the top plate and a volute spiral spring; and the personal and property safety is protected.

An assembly includes a box and a removable sleeve that is engageble with the box and with a wall substrate to secure tight contact between the wall substrate and the box structure, irrespective of the thickness of the wall substrate. The sleeve is configured to be coupled to an electrical device having a corresponding configuration for insertion in the box.