67results about How to "Avoid causing safety accidents" patented technology

The utility model discloses a natural gas leakage detection device which comprises a natural gas pipeline, a large sealing cavity is fixedly connected above the natural gas pipeline, and the utility model relates to the technical field of leakage detection. According to the natural gas leakage detection device, by arranging the large sealing cavity, when natural gas leaks seriously, the internal pressure of a natural gas pipeline is small, so that a spring telescopic rod drives a baffle to seal a gas inlet, then a lifting plate moves downwards to enable the natural gas in the large sealing cavity to eject a pressure release valve on the baffle, and safety accidents caused by continuous leakage are prevented; according to the natural gas leakage detection device, two groups of forward wheels are driven by a motor to rotate, and when a circular ring moves to a leakage point, natural gas jacks a small sealing cavity to rise and then pulls a sliding plate, so that a first transmission gear is separated from a second transmission gear, and the circular ring stops moving to block the leakage point on the outer wall of a natural gas pipeline; and a worker can determine a leakage place by observing the position of the circular ring.

The utility model discloses an integral structure of an integrated high-pressure valve, and belongs to the field of control valves. According to the technical scheme, the integrated high-pressure valve overall structure comprises a valve body, and the valve body is provided with a first oil way communicated with an oil pump, a second oil way communicated with an oil tank, a third oil way communicated with a rodless cavity of an oil cylinder and a fourth oil way communicated with a rod cavity of the oil cylinder. The control of the mechanical carrier on the strong pressure lowering, natural lowering and lifting functions of the load is coupled on the main valve core, the position of the main valve core is controlled in a sliding manner to realize the switching among different functions, and the impact caused by disordered control logic during opening and closing is avoided directly through the structural characteristics of the element, so that the safety of the mechanical carrier is ensured. The system structure is simplified, the number of oil channels is reduced, the number of valve element assemblies used in the whole hydraulic system is reduced, the weight of the whole structure is reduced, the assembling difficulty is lowered, the service life of parts is prolonged, and therefore the maintenance cost and the maintenance cost are reduced.

The present invention relates to the field of lightning arrester detection, and specifically to a lightning arrester detection device, which includes at least a base frame and a control unit, and also includes a first hydraulic cylinder and a second hydraulic cylinder, a fixed frame, a traction frame, a force-applying frame, a first pressure sensor, a pair of second pressure sensors and a support frame, wherein the control unit is fixed to the side wall of the base frame, the fixed frame is movably connected to the base frame, the traction frame is fixed to the base frame, the first hydraulic cylinder is movably connected to the base frame, the first hydraulic cylinder driving end is movably connected to the traction frame, the first pressure sensor is arranged in the traction frame, the support frame is fixed to the base frame perpendicular to the fixed frame, and the second hydraulic cylinder is detachable to be connected to the support frame. The present invention can simulate the use status of the lightning arrester and detect whether the lightning arrester is qualified by simulating the stress condition during use.

The utility model provides a constructional engineering clamping and hoisting device which comprises a fixing frame and further comprises a clamping arm, the clamping arm is rotationally connected with the fixing frame through a rotating shaft, a power push-pull rod is arranged between the clamping arm and the fixing frame, a containing groove is formed in the inner surface of the clamping arm, a push-pull device is arranged in the containing groove, and the power push-pull rod is arranged in the containing groove. And a telescopic push plate capable of extending out of and being stored in the storage groove is fixed on the push-pull device. According to the clamping and hoisting device for constructional engineering provided by the utility model, the telescopic push plates are arranged on the inner surfaces of the clamping arms, so that clamped materials can be more tightly attached to one another, the friction force is increased, safety accidents caused by falling in the transportation process are avoided, and the risk that the materials fall from high altitude to be damaged is also avoided; and the conveying efficiency and the material integrity are improved.

The utility model discloses a lifting and descending functional structure, and belongs to the field of control valves. According to the technical scheme, the lifting and descending function structure comprises a valve body, the valve body is provided with a first oil way communicated with an oil pump, a second oil way communicated with an oil tank, a third oil way communicated with a rodless cavity of an oil cylinder and a fourth oil way communicated with a rod cavity of the oil cylinder, and the lifting and descending function structure further comprises a sliding cavity formed in the valve body. A main valve element is connected into the sliding cavity in a sliding mode, and a first conduction mechanism is arranged on the main valve element. According to the utility model, the strong pressure of the load is lowered and integrated on the main valve core, so that the impact caused by disordered control logic during opening and closing is avoided, the system structure is simplified, the number of oil ducts is reduced, the number of valve core components used in the whole hydraulic system is reduced, the weight of the whole structure is reduced, and the assembly difficulty is reduced; and the service life of parts is prolonged, so that the maintenance cost and the maintenance cost are reduced.

The invention relates to the field of aluminum material processing, in particular to a processing device for aluminum material display rack production, which comprises a main body, a protective cover, a cutting assembly and the like, a protective cover is mounted on the main body; a cutting assembly is installed on the body and located in the protective cover, the cutting assembly is composed of an installation frame, a cutting blade and a motor, the installation frame is fixedly connected with the body, the cutting blade is rotationally connected with the installation frame, the output end of the motor is fixedly connected with the cutting blade, and the motor is fixedly connected with the installation frame. Force enabling the telescopic part of the lifting frame to be downward is generated through the elastic piece, so that when the cutting assembly cuts aluminum materials, an operator only needs to support the main body with hands, the elastic piece generates the force enabling the telescopic part of the lifting frame to be downward to drive the cutting assembly to conduct downward cutting, manual cutting operation is assisted, and physical output of the operator is reduced.

The utility model discloses a mechanical load test device for a charging interface, which comprises a case with an inner cavity and a machine table connected to the side wall of the lower part of the case, a jig is rotatably arranged on the side wall of the upper part of the case, and a charging gun with a cable is mounted on the jig. A driving mechanism connected with the jig is arranged on the inner wall of the machine box, a lifting table is arranged on the top face of the machine table in a lifting mode, and a force application assembly and a clamping assembly connected to the upper portion of the force application assembly are placed on the lifting table. According to the utility model, the charging gun is installed through the clamp, a charging interface load test is carried out on the charging gun through the force application assembly after the cable of the charging gun is clamped by the clamping assembly, and the cable can be stably fixed by the clamping assembly, so that the cable is not easy to fall off, safety accidents are avoided, and the test efficiency is improved.

The utility model relates to the field of numerically-controlled machine tools, and discloses a numerically-controlled machine tool protection structure which comprises a shell, a door leaf is connected into the shell in a sliding mode, a positioning block is arranged on one side of the door leaf, one end of the positioning block is matched with the door leaf in a magnetic mode, the door leaf comprises a fixing plate, and a handle is arranged on the outer side of the fixing plate. An upper sliding mechanism is arranged on the upper portion of the interior of the fixing plate, a lower sliding mechanism is arranged on the lower portion of the interior of the fixing plate, a square magnet is arranged on one side of the middle of the fixing plate, and transparent glass used for observation is arranged in the middle of the fixing plate. The problems that when workers clean or maintain the interior of the equipment and then leave the interior of the equipment, the workers in the equipment do not know the external environment state and push open the protective door, the protective door is opened and closed at the rotating angle, collision between the protective door and the passing workers is likely to happen, and therefore safety accidents are caused are solved.

The utility model relates to the technical field of garment processing, and discloses a garment fabric cutting device which comprises a device frame body, an unwinding roller, a fabric cutting part and a plurality of winding rollers are sequentially installed on the device frame body, and the fabric cutting part comprises a configuration frame and a plurality of cutters installed on the configuration frame; the divider comprises a mounting frame, a pressing unit, a switching unit and a dividing knife; the switching unit comprises a switching rod, a limiting rod, a tool apron, a second spring and a gasket; the installation frame comprises a base and a limiting frame installed on the base. By arranging the divider, after a roll of cloth is divided, a worker only needs to press a switching rod to enable a dividing knife to leave a dividing station, at the moment, the worker can directly start to lay a new roll of cloth, and then the switching rod is pressed again to enable the dividing knife to return to the dividing station to continue working; the configuration frame does not need to be frequently disassembled, the subsequent height adjustment work on the configuration frame every time can be omitted, a large amount of time is saved, and the operation efficiency is improved.

The utility model belongs to the technical field of decoiler machines, and discloses a quantitative cutting device for an environment-friendly steel drum decoiler machine, which comprises a carrying table, a controller, a light source and a power source arranged according to a downward posture of an output end, the output end of the power source is connected with the cutter; a cutting table is arranged at the position, corresponding to the cutter, of the surface of the carrying table, the surface of the cutting table is higher than the surface of the carrying table, the cutting table is provided with a cutting groove matched with the cutter, the positions, on the two sides of the cutting groove, of the cutting table are each provided with a row of photoelectric sensors, and the detection ends of the photoelectric sensors are lower than the surface of the cutting table. And when the photoelectric sensors are all in a light-free state, the controller unlocks the power source.

The invention discloses a railway skylight point construction intelligent system and a working method thereof, the system comprises a large database, an electronic access door and a tool counting device, the large database comprises a material library, a tool library and a personnel library; the electronic access door is arranged at the position of the entity access door and is used for carrying out identity query and access authority identification on passing personnel; the tool counting device comprises a control terminal, and a wireless scanning recognition device, an A-type tool counting plate, a B-type tool counting plate and a C-type tool counting plate which are respectively connected with the control terminal; a plurality of tool placing grids are arranged on the A-type tool counting plate, and a mass sensing device is arranged on a bottom plate in each tool placing grid; the B-type tool counting plate is a first loading and weighing platform; and the C-shaped tool counting plate is a second loading and weighing platform. The method has the advantages that compared with a traditional manual statistical method, 30-50 minutes can be saved in the whole tool counting process, and the tool counting efficiency can be improved by 50%-70%.

The utility model relates to the technical field of polishing machines, in particular to a polishing machine for manufacturing asbestos-fiber-free cement flat plates, which comprises a workbench, moving grooves are arranged on the left portion and the right portion of the upper end of the workbench, and a moving mechanism is arranged in the middle of the upper end of the workbench. A fixing frame is fixedly connected between the upper portion of the left end and the upper portion of the right end of the workbench, first air cylinders are fixedly installed on the left portion and the right portion of the upper end of the fixing frame, the output ends of the two first air cylinders are fixedly connected with connecting frames, and motors are fixedly installed at the left ends of the connecting frames. According to the polishing machine for manufacturing the asbestos-fiber-free cement flat plate, the asbestos-fiber-free cement flat plate can be prevented from shaking in the polishing process, the polishing effect of the asbestos-fiber-free cement flat plate can be improved, a worker can be far away from the range of the polishing roller when placing the asbestos-fiber-free cement flat plate, and the working efficiency is improved. Safety accidents are avoided, and the personal safety of workers can be improved.

The invention discloses an interlocking mechanism for controlling the opening and closing sequence of a cabinet door of a switch cabinet and a use method, and belongs to the technical field of switch cabinet equipment, the interlocking mechanism for controlling the opening and closing sequence of the cabinet door of the switch cabinet comprises a cabinet body and an interlocking mechanism, the cabinet body is used for separating electrified intervals, and the cabinet body comprises an upper cabinet door, a partition plate, a lower cabinet door and a base body; the upper cabinet door is fixedly connected with the upper part of the base body through bolts, the right side of one end of the lower cabinet door is screwed with the lower part of the base body through a hinge, and the left side of the lower cabinet door is fixedly connected with the base body through bolts, so that the lower cabinet door can be opened through the hinge after the bolts are removed; the side face of the upper cabinet door is fixedly connected with the lock rod, one end of the lock rod is provided with a spiral hole, the lock rod is connected with the interlocking mechanism through the spiral hole, the opening and closing sequence of the upper cabinet door and the lower cabinet door is controlled through the interlocking mechanism, mistaken opening and mistaken closing of the cabinet doors are prevented, and only when the upper compartment is not electrified, the upper cabinet door can be opened to enter the upper compartment, and mistaken entering into the electrified compartment is prevented.

This application relates to the field of automotive mold manufacturing technology, and in particular to a mold cleaning device, including a housing, a protective mechanism, a drive mechanism, and a cleaning gun placement mechanism. The housing consists of a base, an outer cover fixedly mounted on the upper surface of the base, and a front opening on the front of the outer cover and a top opening on the top of the outer cover. The protective mechanism consists of a front protective component located at the front opening and a top protective component located at the top opening. The front protective component includes a groove on the inner wall of the outer cover, and a left protective door and a right protective door that slide and engage with the inner wall of the groove via rollers. The mold cleaning device described in this application employs a linkage design between the left and right protective doors and a foldable top plate, synchronously controlled by the drive mechanism, to automatically open and close the openings during mold loading and unloading, effectively isolating high-pressure fluid splashing and diffusion.

The invention provides a scheduling command safety risk identification method and device for hidden danger investigation, electronic equipment and a medium, and the method comprises the steps: constructing a railway road network topological structure, taking stations as nodes, and representing an inter-station interval through a connection line between the nodes; the method comprises the following steps: constructing a train operation space-time network G = (N, A) based on a railway road network topological structure; wherein N is a space-time node and represents the state of the train at one station at one time point; a is a space-time arc section and represents the operation process of the train in the inter-station interval; and obtaining train configuration information, obtaining operation data corresponding to each risk identification type in the train operation process based on the train operation space-time network, calling a risk identification model corresponding to each risk identification type to analyze the train configuration information and / or the operation data, and identifying whether there is a scheduling command safety risk. According to the invention, the scheduling command safety risk can be evaluated in time, and safety accidents are avoided.

The utility model relates to the field of cable wheel discs, in particular to a cable wheel disc which comprises a center cylinder, two oppositely-arranged baffle discs and an adjusting device, the center cylinder is composed of two telescopic cylinders which are matched in an inserted mode and connected in a sliding mode, and the adjusting device achieves the telescopic function of the center cylinder through threaded connection of a lead screw and the telescopic cylinders. In addition, the cable wheel disc is further provided with a sliding rail and sliding groove matching structure to enhance stability, the detachable multi-pulley design is arranged on the edge of the blocking disc to facilitate adjustment, and meanwhile an anti-rolling device is arranged to ensure use safety. The technical effects of improving the adaptability and safety of the cable wheel disc and optimizing the operation convenience are achieved.

The leveling system comprises a control box, the control box is in signal connection with an operation box, the control box is further connected with a leveling control box, a power distribution unit and a network switch are arranged in the leveling control box, and the network switch is connected with a gateway unit and a data processing unit through signal cables; the gateway unit is in signal connection with a sensor unit arranged in the movable power drill rod box; the data processing unit is connected with an execution mechanism unit and an indication unit. The leveling method comprises the following steps: starting the drill rod box power distribution system, leveling the control box, and carrying out self-inspection initialization; an oil cylinder in the middle of an inner side beam body of the inner box serves as a reference oil cylinder, and the height of the reference oil cylinder is adjusted; and the heights of the other oil cylinders are sequentially adjusted based on the height of the reference oil cylinder, and leveling of the movable power drill rod box is achieved. The problems that in the prior art, the power drill rod box is manually leveled and moved, so that the leveling difficulty is large, the precision is low, and the personnel operation safety is poor are solved.

The utility model provides a scaffold which comprises a layer plate, a plurality of guide rails and a plurality of guide rails, wherein the layer plate is provided with a notch and symmetrical track grooves, the symmetrical track grooves are respectively communicated with the notch, the layer plate is provided with two groups of symmetrical straight grooves, and each straight groove is respectively communicated with the corresponding track groove; the symmetrical baffles are matched with the notch and the symmetrical rail grooves, each baffle is connected with an L-shaped rod, and each L-shaped rod is arranged in the corresponding straight groove; and the convex block is rotationally connected with one ends of the symmetrical connecting rods. The utility model relates to the technical field of building construction, in particular to a scaffold. Aiming at the defects in the prior art, the construction frame is developed, when the lifting groove is not used, the baffle plate closes the notch, and when the lifting groove drives equipment to move upwards, the baffle plate does not close the notch any more, so that the equipment is convenient to take.

The invention discloses an automatic enemy cable bow and arrow and a using method, and relates to the field of bows and arrows, the automatic enemy cable bow and arrow comprises a bow and arrow mounting frame and an arrow, an upper bow and arrow piece and a lower bow and arrow piece are fixedly mounted at the top end and the bottom side of the bow and arrow mounting frame respectively, a same bowstring is fixedly mounted on the upper bow and arrow piece and the lower bow and arrow piece, and a mounting frame is fixedly mounted on the bow and arrow mounting frame. A display is fixedly mounted on the mounting frame, a laser sensor and a camera are fixedly mounted on the display, a plurality of hollow holes are formed in the bow and arrow mounting frame, and a control terminal is fixedly mounted on the bow and arrow mounting frame. The displayer, the laser sensor and the camera are used for assisting an operator, the laser sensor and the camera are used for collecting vision and distance data of a target, then an auxiliary aiming picture obtained through processing is played in front of the eyes of a user through the displayer, and therefore a beginner can achieve accurate use experience; and the shooting experience of the user is ensured.

The invention discloses a coal mine fireproof gas detection device with a protection structure, and relates to the technical field of gas detection devices, the coal mine fireproof gas detection device comprises a machine body, a first shell, a first protection plate and a second shell, and the machine body is internally provided with a gas detection probe. According to the coal mine fireproof gas detection device with the protection structure, a bevel gear set is driven by a starting motor to rotate, the bevel gear set drives an exhaust fan to rotate through a connecting column, external air is fed into a machine body, and meanwhile, a round rod on one side of the exhaust fan drives a gear set to rotate through a first belt wheel set; the gear set can drive the connecting rod to rotate, the connecting rod can make contact with a sliding groove in the cleaning brush when rotating, the cleaning brush is driven to swing in a reciprocating mode, and the cleaning brush can clean dust and impurities deposited on the filter screen, so that through the operation, the filter screen can be cleaned while air enters the machine body; dust in the air is prevented from blocking the filter screen.

The utility model relates to the technical field of scissor ladders, in particular to an assembly type scissor ladder, a splicing device comprises two inserting plates, the two inserting plates are fixedly installed on the side face of a stair plate, two inserting grooves are formed in the surface of a wall body, two U-shaped plates are fixedly installed on the surface of the bottom of the stair plate, threaded rods are rotationally connected between the inner walls of the two ends of the two U-shaped plates, and the two ends of the two U-shaped plates are connected with the threaded rods. A rotating wheel is fixedly installed at one end opening of the threaded rod, a sliding groove is formed in the surface of the inner wall of the U-shaped plate, a movable plate is in threaded connection with the surface of the threaded rod, the movable plate is in sliding connection with the sliding groove through the threaded rod, a positioning rod is fixedly installed on the surface of the movable plate, and two positioning seats are fixedly installed on the surface of the wall body; and positioning holes are formed in the surfaces of the two positioning seats. According to the two-section type prefabricated scissor stair, the problems that safety accidents are easily caused and requirements of people cannot be met due to the fact that the connecting position between the prefabricated stair plate and the wall body of an existing two-section type prefabricated scissor stair is not firm enough are solved.

The automatic tin dipping machine comprises a tin box assembly and a shielding cover assembly, a lifting frame set is vertically installed on one side of the tin box assembly, the side, close to the tin box assembly, of the lifting frame set is horizontally connected with a translation frame set, a clamping assembly is installed at the bottom of the translation frame set, and the clamping assembly is connected with the shielding cover assembly. The shade assemblies are symmetrically installed on the left side and the right side of the clamping assembly. According to the automatic tin dipping machine capable of preventing the tin liquid from splashing, the shade assemblies are symmetrically installed on the left side and the right side of the clamping assembly, visual interference can be avoided to the maximum extent, meanwhile, the problem that the tin liquid splashes when a workpiece is subjected to tin dipping is prevented, and the clamping assembly can be adjusted through the structure of the clamping assembly, so that the clamping assembly is convenient to use. Workpieces of different sizes can be stably clamped within a certain range, and adjustment activity of movement and rotation in the horizontal direction and the vertical direction can be provided for the whole clamping assembly and the shade assembly through cooperation of the translation frame set and the lifting frame set.

The present invention discloses a detection, start-up and pressure relief integrated fire extinguishing device and a fire extinguishing and pressure relief method, comprising a shell, wherein a fire extinguishing agent is arranged in the shell, a nozzle is opened at the front end of the shell, and a coolant is arranged between the top surface of the fire extinguishing agent and the nozzle; the end surface of the fire extinguishing agent contacts an ignition head, a start line of the ignition head passes through the front end of the shell and is connected to the output end of a piezoelectric ceramic, the piezoelectric ceramic is installed in a pressure relief groove at the front end of the shell, and a detection and knocking device is arranged above the piezoelectric ceramic; the present invention integrates the detection, start-up and pressure relief functions into a smaller area by means of an installation cylinder, piezoelectric ceramics and a detection and knocking device arranged in the area where the pressure relief groove is located, and the structure is simple, the detection is sensitive and the start-up is safe.

The utility model relates to cantilever hanging basket technical field discloses a movable telescopic cantilever hanging basket, including four auxiliary fixed subassembly, two tracks, two early warning subassembly and roof rack, two the track all include I -beam rail, the both sides of I -beam rail upper end surface all are fixedly arranged with side plate, two I -beam rail upper end all slide setting has cantilever frame, two early warning subassembly respectively fixed at two cantilever frame front end inclined plane lower end, four auxiliary fixed subassembly all through two guide rods are respectively installed at two cantilever frame lower end surface front and back side place, the auxiliary fixed subassembly includes outer frame, the both sides of outer frame inner wall all are fixedly arranged with side frame. In the utility model, not only realize stable support structure, can also timely early warning remind simultaneously, and early warning structure can be recycled, and the security and practicality are higher.

The utility model provides a kind of safety protection steam generator, comprising: boiler shell, with inner cavity, and with inner cavity communication inlet liquid pipeline, exhaust pipeline;Heating assembly, be set on the outer wall of the bottom plate of boiler shell, for heating bottom plate, and heat is transferred to the liquid flowing into inner cavity by bottom plate, to generate steam;Temperature controller, be set in the outer wall center area of bottom plate, for detecting the temperature of bottom plate, and according to the temperature of bottom plate control heating assembly's operating state;Solenoid valve, be set in exhaust pipeline;Pressure relief valve, be set on boiler shell, and with inner cavity communication;The utility model reduces the structural complexity degree of boiler shell and steam generator on the one hand, is favorable to reduce production manufacturing difficulty, on the other hand, because corresponding assembly hole is saved, it is unnecessary to additionally consider corresponding sealing problem, also improve the safety protection performance of steam generator.

The utility model relates to the field of anti-collision structures, in particular to an anti-collision structure for a car window motor. The technical problems that an existing car window motor is usually directly embedded into a car door, when collision happens, the motor is prone to being damaged, a car window cannot ascend and descend, the motor can ascend all the time once started, and safety accidents are prone to being caused when the motor encounters obstacles are solved. Comprising a motor assembly, a first anti-collision assembly, a second anti-collision assembly and a third anti-collision assembly, and the first anti-collision assembly, the second anti-collision assembly and the third anti-collision assembly can be used for carrying out anti-collision protection on different parts of the motor assembly correspondingly, so that the internal motor assembly is not prone to damage; by arranging the Hall sensor and the current sensor, whether the car window encounters an obstacle or not can be detected by detecting the rotating speed of the rotating shaft of the motor body and the current change condition of the motor body, so that measures are taken in time to control the car window to ascend and descend, and safety accidents are avoided.

The invention relates to the technical field of municipal pipe networks, in particular to an anti-falling safe water plugging air bag assembly which comprises a sewage well, a pressure control machine air pressure tank, a PLC control box and a steel sleeve, a sewage pipeline is arranged on an inner wall channel of the sewage well, the outer surface of the steel sleeve is connected with a rubber air bag through a bolt, a water drainage pipe is fixedly connected into the steel sleeve, and the water drainage pipe is fixedly connected with the inner wall of the steel sleeve. A water draining valve is arranged at the end, away from the steel sleeve, of the water draining pipe, a controller is arranged in the PLC control box, and a multi-branch gas collecting pipe is connected to a surface passageway of the pressure control machine air pressure tank. Through the arrangement of a supporting air bag of the air pressure supporting rod assembly, safety accidents caused by falling of the pipeline plugging device are effectively prevented, through real-time monitoring of the PLC control system, the air pressure sensor and the sewage pressure sensor, safety guarantee is provided for the construction and transformation process of a sewage pipe network, and through a pneumatic drainage valve, the safety of the pipeline plugging device is guaranteed. And pressure overpressure protection is effectively provided for the pipeline.

The invention discloses an instantaneous-spark-resistant power distribution box, which is characterized by comprising a distribution box body, an air switch group and an instantaneous-spark-resistant fire-fighting switch, the air switch group and the anti-instantaneous-lap-spark fire-fighting switches are respectively arranged in the distribution box body, the number of air switches in the air switch group is twice that of the anti-instantaneous-lap-spark fire-fighting switches, and each anti-instantaneous-lap-spark fire-fighting switch is connected with two air switches. The instant-lap-spark-resistant fire-fighting switch comprises a magnetorheological fluid assembly and a shunt assembly, the magnetorheological fluid assembly and the shunt assembly are connected in parallel to form a shunt circuit, and if current flowing through an electromagnetic coil is large, magnetorheological fluid in a magnetorheological fluid storage pipe changes under the influence of a magnetic field generated by the electromagnetic coil, so that the magnetorheological fluid in the magnetorheological fluid storage pipe is separated from the shunt circuit. Therefore, the current of the main circuit can be prevented from being too large, electric sparks are prevented from being generated under the conditions of wire lapping and the like, and safe and stable operation of a circuit system is effectively protected.

The present invention discloses a detection, start and pressure relief integrated aerosol fire extinguishing device and an installation and fire extinguishing method, comprising a shell, wherein a fire extinguishing agent is arranged in the shell, a nozzle is opened at the front end of the shell, the end face of the fire extinguishing agent is in contact with an ignition head, the ignition head is a bridgeless ignition head, a start line of the ignition head passes through the front end of the shell and is connected to the output end of a piezoelectric ceramic, the piezoelectric ceramic is installed in a pressure relief groove at the front end of the shell, and a glass bulb temperature sensing knocking device is arranged above the piezoelectric ceramic; the present invention integrates the detection, start and pressure relief functions into a smaller area by arranging an installation cylinder, piezoelectric ceramics and a glass bulb temperature sensing knocking device in the area where the pressure relief groove is located, and the structure is simple, the detection is sensitive and the start is safe.