56results about How to "Meet the requirements of the job" patented technology

The invention discloses a driving device for a synchronous rectifying tube, which is used for generating a driving signal for a synchronous rectifying MOSFET and comprises a voltage detection isolating circuit, a comparison circuit and a driving circuit, wherein the voltage detection isolating circuit is used for acquiring the drain voltage and source voltage of the synchronous rectifying MOSFET;the comparison circuit is used for comparing the drain voltage and with the source voltage of the synchronous rectifying MOSFET; and the driving circuit is used for generating a driving signal for the grid of the synchronous rectifying MOSFET based on the comparison result. The invention also discloses a driving method for the synchronous rectifying tube, comprising the following steps: detectingthe source voltage and the drain voltage of the synchronous rectifying MOSFET; comparing the drain voltage and with the source voltage of the synchronous rectifying MOSFET; and generating the drivingsignal for the grid of the synchronous rectifying MOSFET based on the comparison result. The invention can simply and effectively be obtained the driving signal for the synchronous rectifying tube ina changing circuit topology working in a discontinuous conduction mode.

The invention discloses a weighing, sorting and metering device, which comprises a feeding conveyor belt, a weighing conveyor belt and a rejecting conveyor belt. A first infrared sensor corresponding to the position is suspended above the left end of the weighing conveyor belt. A weighing system is added between the lower part of the transmission belt and the pressure-bearing support. The weighing system includes a pressure sensor, a control box and a display. The pressure sensor is connected to the lower part of the support of the weighing transmission belt. A second infrared sensor corresponding to the position is provided, and a rejecting device is installed on the right side of the second infrared sensor. Non-conforming product storage bag. The invention adopts the design of intelligent weighing and rejecting, which can remove the products with unqualified weight in time, has a simple structure, improves the efficiency of the sorting work, and satisfies the requirements of the work.

The invention relates to an amphibious bionic variable magnetism sucker, comprising a driving system, a magnetic adhesion system arranged on the bottom part of the driving system, a static sealing system and a dynamic sealing system arranged between the driving system and the magnetic adhesion system, wherein a reducer output shaft is connected with a screw bush sheathed with a dynamic sealing cover; an SPGO and a felt are clamped between the dynamic sealing cover and the screw bush; a nut cover is connected on the screw bush and is provided with a magnetic sucker consisting of an N pole of a disk and an S pole of the disk; a reducer is connected with the static sealing cover; the static sealing cover and the dynamic sealing cover are linked with a sealing box of the driving system; and a sealing ring with an O-shaped upper part is clamped between the static sealing cover and the head part of the sealing box of the driving system, and a sealing ring with an O-shaped lower part is clamped between the static sealing cover and the dynastic covering cover. The sucker can be adjusted in a certain range of magnetic attraction force, adapts to complex and changeable amphibious conditions, serves as an adhesion device of a robot travelling on underwater / water magnetic structures, and serves as a carrier for miniature weapons.

The invention discloses a seed sowing device with seeding rate steplessly regulated. The seed sowing device comprises a seed sowing device body as well as a seed sowing wheel, a seed cleaning mechanism and a seed protecting mechanism which are arranged in the seed sowing device body. A worker puts seeds into a seed filling room and starts the seed sowing device, a transmission shaft is driven to rotate by virtue of an external motor, and the seed sowing wheel rotates when being driven by the external motor, so that seeds in the seed filling room continuously enter mould holes of the seed sowing device; when the seeds are rotated to the other side of the seed sowing wheel, a seed protecting belt gets involved and blocks off the mould holes, and the seeds are prevented from accidently dropping out under the action of gravity; and when the seeds are rotated to the outlet of the seed sowing device, the seeds in the mould holes drop out due to dead weight, so that quantitative intermittent sowing of the seeds is realized. For achieving the aim of stepless regulation, the seed sowing device disclosed by the invention adopts a way that a stepping motor is used for driving a mould hole inner wheel, and by virtue of nesting and combination of a first containing part and a second containing part, the volume of the mould holes is increased or reduced along with rotation of the stepping motor. The seed sowing device disclosed by the invention also has the advantages of simple and compact structure and high adjustment and driving efficiency.

The invention provides a stable heat processing method of a titanium alloy part. A stable heat processing clamp is used for processing the titanium alloy part, the problems that residual stress and a structure are not even in the processing process of the titanium alloy part are effectively resolved, and therefore the structural size and the product performance of the titanium alloy part are guaranteed.

The invention provides a high-corrosion-resistance multilayer composite carbon coating of a fuel cell bipolar plate. The high-corrosion-resistance multilayer composite carbon coating comprises a diffusion permeation layer covering the surface of a bipolar plate metal base material, a compact corrosion-resistant layer which covers the upper surface of the diffusion permeation layer; and a performance regulation and control layer which covers the upper surface of the compact corrosion-resistant layer; the diffusion permeation layer is made of one or a mixture of more than two of C, N, Si, SiC, SiO2 and Si3N4; the compact corrosion-resistant layer is prepared from the following materials in percentage by mass: more than or equal to 80 percent of amorphous carbon, less than or equal to 20 percent of hydrogen element and less than or equal to 5 percent of oxygen element; the performance regulation and control layer is prepared from the following materials in percentage by mass: 80 to 99 percent of C element, 0 to 10 percent of doped Si element, 0 to 10 percent of F element, 0 to 5 percent of O element, 0 to 10 percent of N element and 1 to 20 percent of H element; diamond particles or diamond-like carbon particles which are randomly distributed are embedded in the compact corrosion-resistant layer or on the surface of the compact corrosion-resistant layer.

The invention discloses a steering device. The steering device comprises a front hinge frame, a rear hinge frame, a hinge spindle and a power system, wherein the front hinge frame is used for being connected with an elevator body; the rear hinge frame is used for being connected with a vehicle body; the front hinge frame and the rear hinge frame are connected with the hinge spindle as the axis toform a hinge mechanism; the power system is used for driving the hinge spindle to be in linkage with the front hinge frame to rotate relative to the rear hinge frame. According to the steering device,a hinge steering device of the compact structure is arranged between the vehicle body and the elevator body so that the elevator body can turn to the left and right sides of the vehicle body by a large angle, and the requirements for operation of a forklift in a narrow roadway are met; meanwhile, the steering device conducts control through a hydraulic system and conducts steering power transmission through a gear transmission unit and can accurately realize the steering angle and improve the steering precision; in addition, a balance valve is arranged in a steering control oil way to realizelocking of the steering state; and thus, the forklift can maintain the steering state.

A coated layer of ceramics contains cubic-phase ZrW2O8 sosoloid microcrystal doped by 3-valence metal element, Mo, or P and non-crystal glass, phase, and is prepared through preparing wet gel of multi-element tungstate, centrifugal coating on the zero-expansion quartz glass substrate several times, and heat treating. Its advantage is negative expansion coefficient (-2.0- -0.3X10 to the power -6 / deg.C for -20-80 deg.C).

The invention discloses a novel high-dynamic inertial measurement unit. The high-dynamic inertial measurement unit can be applicable to a high-dynamic heavy-overload working environment and is small in volume, high in reliability and strong in shock resistance. According to the invention, when an angular rate gyroscope is arranged, the sensitive structures are not vertically distributed two by two, instead, an oblique crossing distribution manner is adopted to enable the sensing structures of two gyroscopes for measuring the non-axial angular rate of IMU to form an angle of 20 degrees with theaxial direction. Such a distribution manner can give full play to the characteristic of relatively strong axial shock resistance of the sensing structures of the gyroscope, so that the inertial measurement unit has strong longitudinal shock resistance capability, and the accuracy of non-axial angular movement measurement is ensured, thus being adapted to a heavy-overload working environment suchas guided cartridge.

This invention relates to a composite vibration damping type photolithography device. Wherein, the device comprises a uniform active vibration-reduction support or a platform system on the frame, a mask platform system, a lighting system, and an exposure system all supported on the basic frame by different vibration reduction devices. Wherein, it is better to improve the system dynamic performance with grain damper. This invention reduces various disturbances effectively for vibration reduction design with precise positioning request.

The invention discloses an air compression device of an electrical oil-free main air compressor, and belongs to the technical field of air compressors. The air compression device comprises a main housing, a crankshaft, a fan end bearing, a large counterweight block, a swinging rod bearing, a swinging rod, a small counterweight block, a motor end bearing, a coupler and a compression cylinder component; the compression cylinder component consists of a low-pressure cylinder cover, an output connector, a valve plate screw, an exhaust reed, a valve plate, an air inlet reed, a low-pressure cylinder body, a cushion block, a low-pressure cylinder sleeve, a piston ring, a supporting ring, a low-pressure piston, a connecting rod small end bearing, an oil seal, a piston pin, a heat insulation ring and a compression screw; the compression cylinder component consists of at least one high-pressure cylinder component and at least two low-pressure cylinder components; the piston ring and the supporting ring are made of teflon; the oil seal avoids leakage of bearing grease; the heat insulation ring insulates heat of the low-pressure piston. Oil leakage and blow-by hidden dangers of the air compressors are eliminated through air cooling, and a reasonable air flow trend is formed. With the adoption of the piston ring and the supporting ring that are made of teflon, no oil cooling is required, and the maintenance cost is reduced.

The invention discloses a broadband vibration energy harvester. The device comprises a low-frequency vibration structure, a high-frequency piezoelectric composite beam, a first moving magnet, a secondmoving magnet and a coil, the low-frequency vibration structure comprises a first vibration beam and a second vibration beam. One end of the first vibrating beam is fixed; the free end of the first vibrating beam and one end of the second vibrating beam are fixedly connected with the first moving magnet respectively; the free end of the second vibration beam is fixedly connected with the second movable magnet; the coil and the high-frequency piezoelectric composite beam are located on the two sides of the vibration direction of the low-frequency vibration structure, and the low-frequency vibration structure drives the first movable magnet and the second movable magnet to vibrate under vibration excitation so as to output electric energy according to electromagnetic induction between the first movable magnet and the coil and the piezoelectric effect of the second movable magnet touching the high-frequency piezoelectric composite beam. The broadband vibration energy harvester provided by the invention has a low-frequency broadband energy harvesting effect, and can output relatively high voltage and relatively high current and a wider optimal load application range at the same time.

The invention discloses an active output driving circuit of an input and output module. The active output driving circuit comprises a supply circuit, an output starting protection circuit and a line detection circuit. The supply circuit comprises a diode V3, a triode V21 and a capacitor C8. The output starting protection circuit comprises a triode V16, a voltage stabilizing diode D4 and a triode V18. The line detection circuit comprises a resistor R16, a resistor R20, a capacitor C9 and a diode V19. A bus directly supplies power to the active output driving circuit for operation, no relay needs to be adopted, in addition, peripheral equipment can be subjected to effective voltage reduction protection when breaking down, and normal communication of the bus is guaranteed. Therefore, the active output driving circuit is suitable for application and popularization.

The invention discloses a multi-mechanism combined type broadband vibration energy harvester. The device comprises a first vibration beam, a second vibration beam, a high-frequency piezoelectric composite beam, a first moving magnet, a second moving magnet and a coil, the first vibration beam is fixedly connected with the first movable magnet and drives the first movable magnet to vibrate under vibration excitation; the second vibration beam is fixedly connected with the second movable magnet and drives the second movable magnet to vibrate under vibration excitation; the first vibration beam and the second vibration beam are arranged in a split mode. Electric energy can be output between the first movable magnet and the coil through electromagnetic induction, and the first movable magnet and the second movable magnet can be driven by the first vibration beam and the second vibration beam to touch the high-frequency piezoelectric composite beam and output the electric energy according to the piezoelectric effect of touching the high-frequency piezoelectric composite beam. The broadband vibration energy harvester provided by the invention has a low-frequency broadband energy harvesting effect, and can output relatively high voltage and relatively high current and a wider optimal load application range at the same time.

The invention discloses an ocean micro-surface sampling method. The method comprises the following steps that: S1, a sampling device is placed at a working position above the sea surface; step S2, thelowest position, the highest position and the running speed of a collecting plate are determined; S3, a lifting system drives the collecting plate to move downwards to the lowest position perpendicular to the sea surface; S4, the lifting system drives the collecting plate to move upwards to the highest position perpendicular to the sea surface, and when the collecting plate moves to the highest position, a driving mechanism drives a liquid collecting tank to rotate, so that the side, close to a glass plate, of the top of the liquid collecting tank clings to the glass plate; S5, the lifting system drives the collecting plate to move downwards to the lowest position perpendicular to the sea surface, in the descending process, the side, tightly attached to the glass plate, of the top of theliquid collecting tank scrapes liquid on the surface of the glass plate for liquid collection, the liquid is collected into the liquid collecting tank, and the liquid in the liquid collecting tank isguided into a collecting bottle; and S6, sampling is stopped. The sampling method is high in automation degree, high in sampling efficiency, ideal in sampling thickness and capable of meeting the requirements of scientists.

The invention discloses automatic cold chain article disinfection detection equipment which is mainly used for cold chain food disinfection detection and comprises a conveying roller way. A feeding robot arranged on one side of one end of the conveying roller way, a disinfection bin arranged on the conveying roller way close to the feeding robot in the advancing direction, and virus detection equipment arranged on one side of an outlet of the disinfection bin. A transfer roller way is arranged perpendicular to the conveying roller way and opposite to the virus detection equipment, and a discharging robot is arranged on one side of the tail end of the conveying roller way. The automatic cold chain article disinfection detection equipment further comprises a labeling machine arranged between the virus detection equipment and the discharging robot, and a camera used for photographing a pasted label is arranged in the labeling machine. The automatic cold chain article disinfection detection equipment further comprises: material trays arranged in working areas of the feeding robot and the discharging robot, and object detection sensors arranged at the ends of mechanical arms of the robots. The invention also discloses an automatic cold chain article disinfection detection method. The invention can be widely applied to working requirements in multiple fields, regions and different environments.

The invention belongs to the technical field of tunneling construction equipment, and discloses a cutting part, tunneling equipment and further discloses a tunneling method. The cutting part is arranged in the front of a machine body of the tunneling equipment, and includes a middle part rotary tool holder, cutting arms arranged in the circumferential direction of the middle part rotary tool holder, a first driving part and a second driving part, and cutting power heads are arranged at the ends of the cutting arms; the first driving part drives the action of the middle part rotary tool holder;and the second driving part drives the actions of cutting arms and the cutting power heads. The tunneling equipment comprises the machine body, a cutting part body and a conveying system, a walking part is arranged on the lower part of the machine body, and a power system and a control system are arranged on the machine body, and the cutting part body is arranged at the front end of the machine body. According to the cutting part, the tunneling equipment and the tunneling method, the overall structure is reasonable in design; and by configuring the two cutting power heads and the large middlepart rotary tool holder, a new tunneling construction technology is realized, the cutting efficiency is high, and the requirements of operation under specific geological conditions can be met.

The invention relates to a special entrance and exit control system for a clean region based on a voice recognition technology. The system comprises an Ethernet switch, a database server, a communication server, a system software client, a card issuer and a plurality of entrance and exit controllers, wherein the card issuer is connected with the system software client through RS232; each entrance and exit controller is connected with an electronic lock, a voice recognizer and a door lock. A system software platform comprises a system parameter setting part, a personnel information setting part, an entrance and exit control right management part, a controller information and transmission part and a historical record inquiry part; the system parameter setting part is used for completing the information setting of database information, system information, software paths and the like; the personnel information setting part is used for processing employee name, department, team or group, duty and company personnel information; the entrance and exit control right management part is used for processing the entrance and exit right setting of the entrance and exit of the clean region, including each entrance and exit combination and personnel combination authorization; the controller information and transmission part is used for processing the hardware parameter of the controller, including the communication addresses and the work modes; the historical record inquiry part is used for processing personnel access log information inquiry.

The invention relates to a dynamic sealing device for a single shaft of a casting mold numerical control machine. A metal cover and an organ cover are combined, and a double-layer protective mode is adopted, thus an excellent dust-proof effect can be achieved. In the device provided by the invention, components such as a guide rail, a screw rod and the like through which dust can invade the interior of a motive system are omitted, and the service life of the device is improved; and the device has the advantages of simplicity and convenience in installation, convenience in maintenance, capability of adapting to the severe environment with high content of dust, and the like.

The invention provides an automatic adjusting device for the chassis height of agricultural machinery. The automatic adjusting device comprises a chassis, a hydraulic pump, a transverse horizontal sensing mechanism, a longitudinal horizontal sensing mechanism, a reversing valve, swinging sensors, a first hydraulic cylinder and a second hydraulic cylinder, the hydraulic pump, the transverse horizontal sensing mechanism, the longitudinal horizontal sensing mechanism, the reversing valve, the swinging sensor, the first hydraulic cylinder and the second hydraulic cylinder are arranged on the chassis, a movable steering wheel set and a corner adjusting drive arm are connected at the front end and the rear end of the chassis, two ends of the first hydraulic cylinder are connected with the chassis and the corner adjusting drive arm, two ends of the second hydraulic cylinder are connected with the chassis and the movable steering wheel set, and the transverse horizontal sensing mechanism and the longitudinal horizontal sensing mechanism are connected with the reversing valve through swinging sensors. The automatic adjusting device is designed by the aid of a modular structure, so that device overcomes the shortcoming that the chassis height cannot be automatically adjusted in the prior art, transverse horizontal and longitudinal horizontal of the chassis can be kept, so that travelingwheels sufficiently contact with the ground, stress of the traveling wheels is uniform, the agricultural machinery is good in working quality, high in efficiency and low in running cost, and the automatic adjusting device is widely matched with various agricultural machinery.

The invention belongs to the technical field of chemical engineering and particularly relates to an extremely high temperature resistant and adjustable pneumatic loop sealing valve device. According to the extremely high temperature resistant and adjustable pneumatic loop sealing valve device, a high-temperature resistant thermal insulation layer is arranged on the casing inner wall in a lining manner; a high-temperature resistant lining is built in the wall body; a feed opening is formed in the left side at the top of the casing; a discharge opening is formed in the right side at the bottom of the casing; an extremely high temperature resistant rotating valve body is fixedly mounted on the wall between curved passages connecting the feed opening with the discharge opening; a tungsten rod shaft and a U-shaped tungsten plate are adopted as a frame; then corundum casting materials are adopted to cast the frame into the rotating valve body which satisfies the valve size requirement; the left end of the tungsten rod shaft extends out of the casing and is fixedly connected with a driving sleeve shaft of an electric actuator. Through the adoption of the extremely high temperature resistant and adjustable pneumatic loop sealing valve device, the material flushing phenomenon is effectively prevented and the working requirement for valves in extremely high temperature aerobic atmosphere is satisfied.

The invention discloses a band-gap reference voltage source with low power consumption, low voltage and low temperature drift, which comprises a starting circuit, a band-gap reference core circuit and a reference power supply generation circuit, wherein the starting circuit is used for starting the band-gap reference core circuit and the reference power supply generation circuit in a power supply voltage electrifying process; the band-gap reference core circuit is used for generating positive temperature coefficient current; the reference power supply generation circuit is used for generating a negative temperature coefficient current, performing preliminary compensation on the negative temperature coefficient current by using a source negative feedback structure composed of a triode and an NMOS transistor, performing mutual compensation on voltages generated by the positive temperature coefficient current and the negative temperature coefficient current by using resistor connection, and obtaining a reference voltage source. According to the band-gap reference voltage source, the reference voltage source with a low temperature drift coefficient can be obtained by subtracting the negative temperature coefficient of the emitter junction voltage of the triode and the negative temperature coefficient of the gate source voltage of the NMOS transistor and source negative feedback.

The invention discloses a preparation method of a moisture-absorbing double-layer gel polymer electrolyte and application of the moisture-absorbing double-layer gel polymer electrolyte to a zinc ion hybrid battery device. The moisture-absorbing double-layer gel polymer electrolyte is prepared by the following steps: filling frozen-unfrozen bacterial cellulose hydrogel with a polymer, soaking in an electrolyte containing Zn < 2 + > and Li < + >, drying, and placing in a constant-temperature and constant-humidity environment to spontaneously absorb moisture, thereby obtaining the moisture-absorbing double-layer gel polymer electrolyte. The electrolyte provided by the invention is prepared by adopting a reversible process of 'water in salt ', is low in price and environment-friendly, and can effectively improve the ionic conductivity of the gel electrolyte by regulating and controlling the water absorption capacity. The double-layer structure of the electrolyte is suitable for the zinc ion hybrid battery, a battery negative electrode comprises metal zinc foil, zinc powder, zinc alloy and the like, and a positive electrode active material comprises lithium iron phosphate, lithium cobalt oxide, lithium manganate, lithium nickelate and other transition metal oxides capable of reversibly intercalating and deintercalating lithium ions. The assembled battery can show excellent cycling stability at -20 DEG C, which has a wide application prospect in the field of low-temperature energy storage.

The invention discloses a pharmaceutical equipment identity recognition and digital signature management system based on a voice technology. The system comprises a pharmaceutical equipment controller, a management controller, a voice recognition module, a communication server, a voice management module, a database server, a user management client and a voice card sender. The voice recognition module is equipped with an Ethernet interface and an independent control unit and is used for carrying out authorization operation from a network client. The voice recognition module is equipped with a Wigand communication interface and is used for sending authorization authentication information and history records to a post level controller through the interface, and the authorization authentication information and history records are sent to a software platform through the post level controller.

The invention provides a designing method of a fuel nozzle reticular fuel filter. The designing method comprises the following steps: 1, controlling the flow resistance loss of the fuel filter, and controlling the pressure drop generated on the fuel filter within the range of 0.5-1.0 kpa; 2, reasonably selecting the size of the fuel filter screen mesh; and 3, designing the reticular fuel filter structure: (1) rigidity of the fuel filter avoids deformation during the working process, (2) the fit clearance between the fuel filter and a nozzle shell is less than the screen mesh size, and (3), thefuel filter screen is made of nickle and stainless steel wires or is a metal foil screen formed through laser boring of metal foil. According to the designing method, the reasonable control range offuel filter pressure drop, the selecting principle of the screen mesh diameter and the designing key points of the fuel filter structure are given to ensure that the designed reticular fuel filter meets the nozzle working requirements.

The invention discloses a fitting approximation algorithm-based fusion band mathematic model. The model comprises a display screen, an indication lamp, a circuit board, an instruction editing module and a fusion algorithm module, wherein the display screen is connected with a control panel through a rotary shaft; a power supply is arranged at the right upper part of the control panel; the indication lamp is mounted on the outer wall of the control panel; the circuit board is mounted on the inner wall of the bottom surface of the control panel; the circuit board is connected with an intelligent processing chip through a lead wire; the intelligent processing chip is mounted at the left upper part of the circuit board; the output end of the instruction editing module is electrically connected with the input end of an instruction input module; and the instruction input module is electrically connected with the output end of a network card and the input end of a network connection module. According to the model, an automatic correction module is arranged, and a computer can perform automatic correction on a result obtained by ending of work, so that a few calculation errors can be reduced, the data accuracy is greatly improved, and the demands of people are met.

The invention relates to the technical field of coal ploughs for exploiting low coal seams in underground coal mines, and particularly relates to a rotary tool apron structure capable of being quickly disassembled and assembled of a coal plough. A plough cutter seat in the prior art is in penetrating connection with a plough body through a long pin, and when the plough cutter seat needs to be replaced, time and labor are wasted during the operation, and the exploiting efficiency of the coal plough is seriously influenced. The rotary tool apron structure consists of a rotary tool apron, a plough body, a long ring, a bolt and a nut, wherein the rotary tool apron is rotated by taking a bearing pin installed on the plough body as a rotating center; when a semicircular hook of the rotary tool apron and a boss extending out of the plough body are arranged in parallel, the long ring is installed and is fixed through the bolt and the nut; and when the bearing pin on the rotary tool apron is rotated in a corresponding position of a guide groove of the plough body, the rotary tool apron can be disassembled along with the guide groove. The rotary tool apron structure is simple and convenient to operate, low in labor intensity and quick in operating speed, and is suitable for underground coal ploughs.