76results about How to "Guarantee job stability" patented technology

The utility model discloses an intelligent universal circuit breaker, which relates to the field of circuit breakers and comprises a front shell, a base, a rear shell and a handle, an operating mechanism and a tripping assembly are arranged in the front shell, an arc extinguish chamber and a linkage mechanism are arranged in the base, a contact, a run-on plate and an angle plate which are fixedly mounted are arranged on the rear shell, and the handle is arranged on the rear shell. The contact is clamped by the run-on plate and the angle plate, a fastening assembly for elastically connecting the run-on plate, the angle plate and the contact is arranged among the run-on plate, the angle plate and the contact, and the run-on plate is in surface contact with the contact. The utility model has the advantage of good working stability.

The application discloses an electric vehicle charging protection device, which comprises a main body, a shielding part and a movable part, wherein the shielding part and the movable part are fixed on the main body; a controller, a button and a connecting port are arranged on the main body, the controller is connected with an external power supply and an electric device through the connecting port; a sleeve is arranged at the lower end of the shielding part, a connecting rod is arranged at the upper end of the main body, the shielding part is inserted into the sleeve through the connecting rod and is fixed at the upper end of the main body, so as to cover the button and the connecting port; the movable part comprises a support, a rotating block and a motor, the motor is fixed in the shielding part through the support, one end of the rotating block is connected with a driving end of the motor, the motor drives the rotating block to rotate and generates centrifugal force; the button and the motor are electrically connected with the controller. Through the arrangement of the shielding part and the movable part, the movable part drives the shielding part to move, the rotating block rotates and generates centrifugal force to make the accumulated snow above the shielding part fall off, the situation that the shielding part is deformed due to too much accumulated snow is avoided, and the safety and stability of the electric vehicle charging protection device are improved.

The utility model relates to the technical field of aluminum powder atomizers, in particular to an atomizer nozzle assembly which comprises a nozzle body, and the nozzle body comprises a molten aluminum circulation body, a primary air cavity wrapping body and a secondary air cavity wrapping body. The replaceable nozzle is composed of a round pipe section, a flange section connected with the lower end of the round pipe section and an upper bent section connected with the outer edge of the flange section, a limiting spigot corresponding to the round pipe section is formed in the lower edge of the inner circumferential face of the molten aluminum circulation body, and a plurality of primary airflow inlets corresponding to the primary impact flow channels are formed in the outer circumferential wall of the round pipe section. A plurality of secondary airflow inlets corresponding to the secondary impact runners are formed in the peripheral wall of the round pipe section, an annular positioning table located on the inner side of the upper bent section of the replaceable nozzle is arranged at the lower end of the secondary air cavity wrapping body, and the flange section of the replaceable nozzle is connected and fixedly connected with the bottom face of the annular positioning table. When the nozzle is blocked, the nozzle main body does not need to be replaced, so that the use cost is saved.

This invention relates to the field of dental chair water system disinfection equipment, and discloses a modular integrated dental chair water system cleaning and disinfection device, including a device shell and internally detachably connected modules for clean water supply, chemical solution supply, water system switching, control, and monitoring. Each module is an independent detachable unit, connected via standardized fluid interfaces and electrical connectors; the clean water and chemical solution modules have independent fluid branches and standardized output interfaces connected to the water system switching module; the water system switching module has a built-in solenoid valve group, with its input end connected to the former two and its output end having a total output interface for the dental chair water system; the control module is electrically connected to each module, and the monitoring module includes a pipeline sensing unit. This invention effectively solves the problems of low integration, lack of modularity, inconsistent interfaces, and cumbersome maintenance in existing equipment, achieving fully automated cleaning and disinfection of the dental chair water system, while also possessing the advantages of strong adaptability and stable operation, significantly improving cleaning efficiency and hygiene safety.

The utility model relates to a bandaging tool technical field. A kind of efficient bandaging tensioning device, including shell, inner support is equipped in shell inner side, pivot is equipped on shell, inner support is rotatably installed on pivot, bandaging is wound on pivot, and bandaging end portion is passed out from shell rear side;Fixed band is equipped in shell front side, and fixed band and bandaging end portion are equipped with hook;The inner side of inner support is equipped with the ratchet wheel of fixed connection with pivot, and limit component is equipped on inner support.The utility model provides a kind of efficient bandaging tensioning device, which is convenient, labor-saving, high in tensioning efficiency, reliable in locking, can guarantee the stability of work, compact in structure, strong in applicability, and has automatic winding function, is convenient to store, can satisfy higher use demand;Solve the technical problem that the bandaging device structure and function in prior art are relatively single, a part exists and is labor-consuming, low in tensioning efficiency, unreliable in locking, limited in application range and other problems, cannot satisfy higher use demand.

The utility model discloses a kind of piece type wind power tower cylinder overhauling device, belong to wind power technology field, including support platform, support platform two sides are provided with several support rotating components, several support rotating components are loaded with wind power tower cylinder, support platform two sides are provided with limit component, support platform is provided with moving platform, and overhauling component is slidably connected on moving platform, personnel is convenient to enter and carries out overhauling operation to wind power tower cylinder inner wall, carries out overhauling operation to internal connecting place, it is easy to operate, and wind power tower cylinder is effectively limited when personnel overhauls inner wall, avoid its deflection, guarantee the security of overhauling.

This invention discloses a miniaturized four-channel combining module based on the TE20 mode, belonging to the field of millimeter-wave power combining technology. It includes a layered upper cavity, a mezzanine, a lower cavity, and an RF unit. The RF unit comprises a TE10-TE20 waveguide distributor, two amplification branches, and a TE20-TE10 waveguide combiner. Each amplification branch includes a TE20 mode filter, a waveguide-microstrip transition, a pair of amplifier chips, and a microstrip-waveguide transition connected sequentially. The TE10-TE20 waveguide distributor and the TE20 mode filter are disposed in the upper and lower cavities. The waveguide-microstrip transition, the pair of amplifier chips, and the microstrip-waveguide transition are disposed on opposite sides of the mezzanine. The TE20-TE10 waveguide combiner is disposed in the upper cavity, the mezzanine, and the lower cavity. This invention utilizes a high-isolation waveguide distributor / combiner to improve branch isolation, shorten the combining path, and has a compact overall structure with advantages such as wide bandwidth, high isolation, high combining efficiency, and miniaturization.

The utility model relates to a kind of cylindrical roller bearing equipment roller tool, including bottom plate, pedestal, feeding unit and pusher unit, its technical key points are: concentric bearing is equipped on the upper outer sleeve of pedestal, and bearing housing is connected using concentric bearing, positioning recess corresponding to the component to be assembled is equipped in the upper surface middle part of bearing housing, feeding unit includes guide riser and feeding hopper, pusher unit includes support axle seat, force rod axle, handle located in one end of force rod axle, swing bar located in the other end of force rod axle, connecting rod articulated with the other end of swing bar, push rod articulated with the other end of connecting rod, and pressure head connected with the other end of push rod, pedestal lower part is equipped with the avoidance mouth corresponding to pressure head, guide riser lower part is equipped with the radial pusher through-hole corresponding to positioning recess, and pressure head terminal is located in the side of radial pusher through-hole and can pass through radial pusher through-hole.The utility model solves the problem of time-consuming and laborious when manually pushing cylindrical roller, reduces the work pressure of operator, and significantly improves work efficiency.

This application discloses a method, apparatus, storage medium, and lidar for obtaining etching depth. The method includes: obtaining a target etching depth corresponding to a target coupling length ratio at the center wavelength of an optical signal, wherein the target etching depth is any metric value selected from multiple etching depths for etching a waveguide; when the target coupling length ratio is the smallest coupling length ratio in the set of ratios, the target etching depth is determined as the waveguide etching depth for etching the waveguide; the set of ratios includes coupling length ratios corresponding to each etching depth in the set of multiple etching depths, and the coupling length ratio is obtained by considering the optical refractive index corresponding to each etching depth and the sensitivity of the optical refractive index to the shift of the center wavelength. Using this application, the operational stability of the optical coupler can be guaranteed, thereby ensuring the stability of the lidar system.

The utility model provides a drawer type cooking utensil, include: shell, cavity, cavity sets up inside the shell, the inside cavity is used for placing the food of waiting heating, front plate, connect in the front side of shell and cavity, drawer, drawer is used for sealing or opening the opening of cavity, wherein the left and right sides of drawer are connected with first slide rail and second slide rail respectively, still have third slide rail in the lower part of drawer, every slide rail can extend or retract relative to front plate, every slide rail includes fixed rail and movable rail, movable rail can slide relative to fixed rail, fixed rail is pasted on the outer wall of cavity, the front end of fixed rail rivets fixed on the front plate, the rear end of fixed rail rivets fixed on the back wall of cavity. Through the fixed rail of slide rail is changed to rivet connection, and every riveting site all uses two riveting pieces to connect, two riveting pieces are parallelly arranged along the width direction of fixed rail, guarantee the connection stability of fixed rail fully.

This utility model relates to the field of current transformer technology and discloses a shielded electronic current transformer that solves the problem of poor shielding effect in existing electronic current transformers. It includes a shielded induction coil housing, an insulator, and a shielded electronic device mounting housing. The induction coil is installed inside the shielded induction coil housing. A busbar is installed through the center of the shielded induction coil housing, passing through the center of the induction coil. A grounding wire is installed at one end of the bottom of the shielded induction coil housing. A breakdown-resistant component is installed at the top of the shielded electronic device mounting housing. Both the shielded induction coil housing and the shielded electronic device mounting housing are composed of an aluminum alloy layer, an aluminum oxide insulating outer layer, a carbon nanofiber layer, an aluminum foil layer, a copper mesh layer, a nanocrystalline absorbing layer, and an epoxy resin curing layer. This electronic current transformer improves shielding performance.

The application discloses a dust collector filter bag and a leak detection method and a preparation method thereof. The dust collector filter bag comprises a bag body for filtering dust, and a conductive grid arranged on the bag body. The conductive grid comprises conductive polymer wires and non-conductive polymer wires. The conductive polymer wires are uniformly arranged in a radial direction or a weft direction. The conductive polymer wires and the non-conductive polymer wires are arranged in a cross manner. Under the action of external factors, the conductive polymer wires are damaged first or simultaneously with the bag body. In the leak detection process of the dust collector filter bag, no external circuit, external power supply and other devices are needed except for a signal monitor, so that the leak detection cost of the filter bag is greatly reduced, and the detection process is convenient and simple and has a high leak detection accuracy.

The utility model provides a kind of for counterattack crusher's hanger bolt assembly.Hanger bolt assembly includes pull rod and two ear plates.Pull rod includes fixed part and connecting part.Threaded structure is equipped on fixed part, and connecting plate is fixedly connected on connecting part.Two ear plates are arranged at intervals, and symmetrically connected to the two sides of connecting plate.One of ear plate and connecting plate is equipped with insertion interface, another is equipped with insertion column, insertion column is inserted in insertion interface one by one, and ear plate and connecting plate are welded connection.The ear plate and the forming of connecting plate in the hanger bolt assembly of the utility model are relatively simple, and then the hanger bolt assembly formed by the welding of ear plate and connecting plate after insertion is relatively simple, and the manufacturing cost of hanger bolt assembly is reduced.

The utility model relates to display equipment technical field especially LED packaging structure and display device, LED packaging structure includes wiring layer, with the LED chip of wiring layer electricity connection, the filling layer that sets up around LED chip, set up in the sapphire layer that LED chip far away from wiring layer one side and LED chip are pasted, LED packaging structure still includes the fluorescent layer that sets up around filling layer and sapphire layer, fluorescent layer sets up around filling layer and sapphire layer, realizes spectrum conversion, when the blue light that LED chip emits irradiates on fluorescent layer, fluorescent layer absorbs part blue light and emits other color light, and the white light that mixes with blue light is obtained to realize MIP white light product, make the light that emits from LED packaging structure more uniform, improve illumination quality and visual comfort.

The invention relates to the technical field of geological drilling, in particular to a multifunctional rock-soil geological drilling rig which comprises an electric operation frame and a handheld drilling machine, the electric operation frame comprises an electric base, and a driving storage battery, a control component and an angle adjusting support are installed in the electric operation frame; an angle adjusting motor for controlling and adjusting the working direction of the handheld drilling machine is fixedly mounted on one side of the upper end of the handheld drilling machine; one end of the stable supporting rod is rotationally arranged on the two sides of the electric base, the upper end of the electric sliding rail is rotationally connected with the stable supporting frame, and the combined structure is used for fixing the handheld drilling machine; the handheld drilling machine comprises a drilling machine body, a power storage battery, a drilling motor, a drilling rod, a drilling rod fixing sleeve, a sampling sleeve and an operating handle, wherein the drilling rod is sleeved with the sampling sleeve, and the operating handle can be fixedly installed in the combined structure. The combined design of the independent handheld drilling machine and the foldable structure support is adopted, and diversified complex external environments can be better dealt with by means of flexible switching of a handheld operation mode and a support operation mode.

The present application relates to the related technical field of train uncoupling and recoupling, and specifically includes a train uncoupling and recoupling method and system based on multi-station robot cooperation, which comprises the following steps: receiving a target uncoupling and recoupling task, triggering a cooperative decision maker with a car coupler operation control condition, executing condition decoupling and parallel decision making, and issuing an uncoupling and recoupling cooperative strategy and directional driving control of a multi-station robot. The present application solves the technical problem that the existing train uncoupling and recoupling operation relies on a fixed process and a single robot execution mode, which is difficult to adapt to different train marshalling types such as heavy load and mixed composition, and different operation scenarios such as uncoupling and recoupling, and cannot meet the efficient and safe operation requirements under complex working conditions. The present application realizes the technical effect of building a cooperative control knowledge base, constructing differentiated strategies for different scenarios such as heavy load train - step uncoupling and mixed composition train - adaptive recoupling, carrying out multi-station robot linkage control with cooperative topology, condition decoupling for stable operation and dynamic adaptation, and ensuring the stability of train uncoupling and recoupling operation.

This invention relates to the field of industrial and mining engineering construction, specifically to an integrated device for site leveling and waste recycling in industrial and mining engineering. The device includes a vehicle body, an electric slide rail fixedly connected to one end of the vehicle body, and a leveling component at the other end of the vehicle body. A slider is slidably connected to the inner wall of the electric slide rail, a collection shell is fixedly connected to the side wall of the slider, a filter component is provided on the inner wall of the collection shell, and a conveying component is provided on the inner wall of the top of the collection shell. The conveying component includes a fixed connecting plate fixedly connected to the inner wall of the top of the collection shell, and a motor is fixedly connected to the side wall of the collection shell. This invention integrates site leveling and waste recycling into one unit. Through the coordinated operation of a leveling shovel, conveying component, and leveling roller, it replaces multiple scattered devices to simultaneously complete waste collection, screening, and site rolling leveling, significantly simplifying the construction process, reducing energy consumption and maintenance costs, and significantly improving the efficiency of industrial and mining engineering construction.

The utility model discloses a faucet structure, contain main part and water spray switching assembly, and the main part sets up water inlet end, first water outlet end and second water outlet end, and water spray switching assembly contains water channel body and water distribution spare, and the water channel body has main water channel, first water distribution channel and second water distribution channel, and is communicated with water inlet end, first water outlet end, second water outlet end respectively, and the assembly chamber of water channel body is equipped with valve sleeve spare, and the water distribution spare is installed in valve sleeve spare, and the clamping plate of valve sleeve spare cooperates with the hook plate of water channel body outer wall, realizes axial positioning through valve sleeve spare circumferential rotation, and the assembly chamber is communicated with main water channel, first water distribution channel, second water distribution channel through main port, first water port, second water port respectively, and the valve port of valve sleeve spare is connected first water port through water outlet, and main port is connected valve port and second water port respectively, and the sealing part of water distribution spare can selectively seal valve port or second water port, when sealing second water port, first water outlet end water outlet, when sealing valve port, second water outlet end water outlet, realize water spray switching. Assemble convenient and positioning stable, and it is convenient for water outlet switching.

This invention discloses an automotive lens with a composite electrochromic glass layer. It includes a lens body made of molded optical glass; the front side of the lens body has an aspherical convex light-emitting surface, and the rear side of the lens body is a flat light-incoming surface. Electrochromic glass is compositely connected to the light-incoming surface, and the edge of the lens body has outwardly protruding snap-fit ​​mounting edges. This invention, by compositely connecting electrochromic glass to the flat light-incoming surface of the rear side of the lens glass, changes the color of the electrochromic glass, altering the visual effect of the automotive lens and giving it a more premium feel. By changing the transparent electrochromic glass to a darker color, the light transmittance of the automotive lens can be reduced, allowing the lens to adjust its light transmittance according to different environmental and weather conditions. This invention not only improves the visual effect but also has the advantages of adjustable light transmittance, low manufacturing cost, and good durability.

The invention relates to the related technical field of train unhooking and rehooking, in particular to a train unhooking and rehooking method and system based on multi-station robot collaboration.The method comprises the steps that a target unhooking and rehooking task is received, conditions are controlled through coupler operation, a collaborative decision maker is triggered, and condition decoupling and parallel decision making are executed; and issuing an unhooking and rehooking cooperation strategy and carrying out directional driving control on the multi-station robot. The technical problems that existing train unhooking and rehooking operation depends on a fixed process and a single robot execution mode, different train marshalling types such as heavy load and mixed marshalling and differentiated operation scenes such as unhooking and rehooking are difficult to adapt, and the efficient and safe operation requirement under the complex working condition cannot be met are solved, a cooperative control knowledge base is constructed, and the operation efficiency is improved. Different strategies are constructed for different scenes such as heavy haul train-step unhooking and mixed train-adaptive re-hooking, multi-station robot linkage control is carried out through collaborative topology, condition decoupling of stable operation and dynamic adaptation is carried out, and the technical effect of train unhooking and re-hooking operation stability is guaranteed.

The utility model discloses a pull rope connector which comprises an installation disc and a main body, the top of the installation disc is provided with a vertically-through wire inlet hole, the bottom surface of the installation disc is provided with a wire groove communicated with the wire inlet hole, and the wire groove is internally provided with a plurality of anti-skid convex blocks; the main body is detachably connected with the mounting disc, the main body is provided with a clamping surface corresponding to the wire slot, and a pull rope clamping space is formed between the clamping surface and the wire slot; and the main body is provided with a mounting mechanism for fixing an external structural member. The pull rope connector is novel in structure, after the end of the pull rope extends into the pull rope clamping space, the mounting disc and the main body which are detachably connected can stably clamp and fix the pull rope, glue is not needed, disassembly and assembly of the pull rope and the pull rope connector are greatly facilitated, the maintenance efficiency of fitness equipment is improved, and the maintenance cost is reduced. And the anti-skid convex blocks in the wire grooves can improve the clamping degree of the pull rope clamping space to the pull rope, so that the risk that the pull rope is separated from the pull rope clamping space is further reduced, and the working stability of the pull rope connector is ensured.

The utility model provides a kind of chiseling and debris blowing integration device, chiseling device, guide caster and high-pressure blowing pipe are integrally installed on device shell, guide caster is used to be in contact with the surface of concrete structure to be constructed to form rolling support effect, so that chiseling and debris blowing integration device can maintain certain construction interval with the surface of concrete structure to be constructed, guarantee operation stability.Through chiseling device and high-pressure blowing pipe, chiseling and debris blowing operation can be carried out on the surface of concrete structure simultaneously, that is, in the process of moving chiseling and debris blowing integration device, chiseling is carried out by chiseling device first, and then high-pressure blowing pipe is used to blow high pressure on the construction surface after hammering by chiseling device, so as to remove concrete debris that has loosened but not separated from the construction surface.

The utility model relates to positioning welding machine technical field provides a kind of positioning welding machine of convenient cleaning welding edge. It includes welding head, support piece, spring, positioning block and cleaning assembly, the support piece one end rotation assembly in the welding head;The spring one end fixedly connected the support piece away from the one end of welding head, the spring other end fixedly connected the positioning block, the positioning block bottom is spherical surface;The cleaning assembly fixed assembly in the positioning block;The welding head drops and carries out welding work, and the positioning block is compacted on weld by the spring elastic force, the positioning block is embedded in weld and moves along weld in spherical bottom surface, and the cleaning assembly follows the positioning block and carries out cleaning along weld. The positioning welding machine of convenient cleaning welding edge can clean welding edge along weld in synchronous welding process, cleaning is timely and does not need manual operation.

The utility model discloses a quick connection blowout preventer pipe, which is composed of a connecting pipe and a quick connection sleeve, the quick connection sleeve is composed of a connecting sleeve and a locking mechanism, one end of the connecting pipe is a male buckle end and a first tooth-shaped butt joint boss is arranged on the outer wall of the connecting pipe, the other end of the connecting pipe is a female buckle end and a second tooth-shaped butt joint boss is arranged on the outer wall of the connecting pipe, the connecting sleeve is arranged on the outer side of the connecting pipe, the first annular end plate and the second annular end plate at both ends of the connecting sleeve are respectively embedded and matched with the first tooth-shaped butt joint boss and the second tooth-shaped butt joint boss, the locking mechanism is arranged on the connecting sleeve along the radial direction and can be matched with the locking hole arranged on the connecting pipe, the cable blowout preventer pipe is stably connected and sealed through the plug-in butt joint between the connecting pipes and the locking of the quick connection sleeve, the operation difficulty and the labor intensity are low without the cooperation of complex tools, the quick assembly and disassembly characteristics greatly improve the operation efficiency, and the cable blowout preventer pipe has good emergency performance and can be put into use only by being customized according to the size in various oil and gas field development scenes.

The application relates to the technical field of water purification devices, and particularly relates to a water treatment ultraviolet disinfection water purification device, which comprises a light-transmitting cleaning device installed on the water purification device, the light-transmitting cleaning device comprises a lifting mounting seat, a double-wall scraping device, a center positioning device, a winding roller, a circulating suction device and a limiting mounting shell, the limiting mounting shell is fixedly installed on the water purification device, the lifting mounting seat is slidingly installed in the limiting mounting shell, the double-wall scraping device is fixedly installed on the lifting mounting seat, the center positioning device is fixedly installed on the lifting mounting seat, the winding roller is fixedly installed on the top of the limiting mounting shell, a connecting pull rope is arranged on the winding roller, one end of the connecting pull rope, which is away from the winding roller, is fixedly connected with the lifting mounting seat, the circulating suction device is fixedly installed on the winding roller, and the suction end of the circulating suction device is connected with the lifting mounting seat; the water treatment ultraviolet disinfection water purification device can effectively improve disinfection and sterilization quality and maintenance efficiency.

The utility model discloses a massage back cushion, including backrest board, massage machine core and power, the middle part of backrest board is hollow out, and is provided with the guide plate that extends along the up and down direction, and the rack that is symmetrically arranged on the both sides of guide plate, the positive surface of massage machine core is slidably fitted in the guide plate, and the both ends are respectively set up in the rack on the both sides of guide plate, and the action gear in massage machine core end portion is engaged with corresponding rack, the back of power is installed in backrest board, and is connected with massage machine core electricity nature. The utility model discloses the existing massage base is replaced for lighter, thinner backrest board, because the thickness is thin, even if the processing production of using the existing plastic material, also can realize the deformation of certain degree when being subjected to external pressure to can be more conformal chair backrest and other application scene, the both ends of massage machine core are set up in the rack on the both sides of guide plate, can adapt the deformation of rack and will not occur action gear and rack disengagement situation in the moving process of massage machine core.

This utility model discloses an electromagnetic heating device and a single-screw extruder, belonging to the technical field of single-screw extruders. It includes a heat dissipation assembly, a control assembly, and a heating body for heating the object to be heated. The heating body includes a first half-shell, a second half-shell, and a connecting unit. The two sides of the first half-shell are hinged to one side of the second half-shell and one side of the controller, respectively. The other side of the second half-shell is detachably connected to the side of the first half-shell opposite the controller. The side of the second half-shell opposite the controller is movably abutted against the controller via the connecting unit, allowing the controller to rotate relative to the heating body for adjustment and maintenance angle. A space for heating the object to be heated is formed between the first and second half-shells. The middle part of the second half-shell is connected to a radiator for heat dissipation from the heating body. The controller is electrically connected to the heating body. This utility model facilitates the maintenance and repair of the controller and the electromagnetic heating coil.

This application relates to a chip packaging structure and an optical device. The chip packaging structure includes: a first substrate having a predetermined mounting area; a second substrate spaced apart from the first substrate and covering the predetermined mounting area; a packaging assembly including an adhesive and at least one retaining ring, all retaining rings surrounding the predetermined mounting area, and the adhesive surrounding the retaining ring closest to the predetermined mounting area; the adhesive bonds the first substrate and the second substrate together, and of all the retaining rings, the retaining ring closest to the predetermined mounting area is in close contact with the first substrate and the second substrate, forming a receiving cavity together with the first substrate and the second substrate, and blocking the adhesive from entering the receiving cavity; a functional device is received in the receiving cavity and mounted in the predetermined mounting area. The chip packaging structure of this application has good product yield, long service life, high structural stability, and good operating temperature resistance, meeting the requirements for automotive-grade applications.

The application discloses a kind of negative stiffness structure's air pressure drive pilot valve, system and control method, the pilot valve includes first partition and second partition, pneumatic piston is arranged in first partition, second partition is below pneumatic piston, and negative stiffness pneumatic elastic element is connected below second partition;Air pressure rises, and the air pressure in second valve cavity drives pneumatic piston to move up to cut off atmospheric pressure gas path, and the air pressure in third valve cavity drives outer ring convex surface to deform and pull plug to move up to open negative pressure communication port;Air pressure drops, and reset spring drives pneumatic piston to move down to make atmospheric pressure gas path communication, and negative pressure port pre-tightening spring drives plug to move down to block negative pressure communication port.The application is controlled by pure mechanical type, does not rely on power control, can work in humid, high temperature, many mosquitoes and power supply difficult and so on harsh working conditions, improves the working stability of pilot valve;By using air pressure as control signal, the automatic control of pilot valve is realized, and the control accuracy is improved.