46results about How to "High controllable precision" patented technology

The invention relates to a parallel line dipole structure-based chiral metasurface terahertz polarizer and belongs to the electromagnetic wave full-vector transmission control device technical field.The parallel line dipole structure-based chiral metasurface terahertz polarizer of the invention includes a dielectric substrate, a metal chiral structure surface layer disposed on the upper surface of the dielectric substrate, and a metal reflection plate surface layer disposed at the lower surface of the dielectric substrate. The parallel line dipole structure-based chiral metasurface terahertzpolarizer is characterized in that the metal chiral structure surface layer comprises an array of N*N orthogonally-arranged square cells; in each square cell, two symmetrically-disposed rectangular metal lines are distributed along one diagonal of the square; and an angle alpha between the long side of the metal line and the row line of the array is 45 degrees. The polarizer of the invention has the advantages of high polarization conversion efficiency, small insertion loss, small circular polarization phase difference, obvious out-of-band suppression, simple structure, small size, convenientcontrol and easiness in processing.

The invention discloses an automatic labeling machine and a labeling method. The labeling machine comprises a conveying module for conveying products from an identifying position to a labeling position, a label printing device, a robot and a CCD camera, wherein a slide table is arranged in a label outlet of the label printing device, and is provided with a horizontal support surface; a cylinder is connected below the slide table, and is acted on the slide table to move in the vertical direction; the robot comprises a vacuum label sucking head; the vacuum label sucking head moves between the label printing device and the labeling position; and the CCD camera is arranged below the vacuum label sucking head for acquiring images of labels absorbed on the vacuum label sucking head. The automatic labeling machine is high in control precision and detecting precision, generates no bubbles in labeling, and is fast in labeling.

The invention provides an experiment device used for simulating a goaf filling process, and belongs to the technical field of coal mine goaf filling and underground engineering filling. The experiment device mainly comprises an experiment simulating device, an outer grouting control device and a data collecting device, wherein the experiment simulating device is composed of a transparent model body made of organic glass, a rock-soil layer arranged in a layered mode, a simulative goaf, a grouting guide pipe communicated with the goaf, and sensors arranged in the goaf. A grouting process is automatically controlled by the outer grouting controller. Data obtained by the sensors is transmitted to a data collector through data lines. The experiment simulating device, the outer grouting control device and the data collecting device are connected in a matched mode, in the grouting process and when the situation that overlying load effect acts on a roadway is simulated, data of the sensors is collected, and mechanics evolution process analysis in the coal mine goaf filling process is achieved. The model body of the experiment device is transparent and visible, the grouting process and the data collection are automatic, and the experiment device is reasonable in structure, high in controllable precision, good in sealing effect and suitable for being used in teaching demonstration and scientific research of the indoor experiment of the goaf filing process.

The invention discloses a chiral super-surface terahertz reflective 90-degree polarizer, belonging to the technical field of electromagnetic wave full-vector transmission control devices. The chiral super-surface terahertz reflective 90-degree polarizer comprises M*N polarization units periodically arranged on a plane, wherein each polarization unit comprises an underlayer dielectric substrate, a front resonance structure arranged on the front of the underlayer dielectric substrate and a back resonance structure arranged on the back of the underlayer dielectric substrate; the front resonance structure is a centrosymmetric structure; the back resonance structure and the front resonance structure are in 90-degree conjugation; and M and N are both an integer greater than 20. In the invention, by use of a micro-nano production technology and in comparison with the technology of realizing a terahertz reflective polarizer by use of structures such as ion etching and electro-optical crystal, the chiral super-surface terahertz reflective 90-degree polarizer disclosed by the invention has the advantages of simple structure, small volume, low processing cost and high controllable precision.

The invention relates to the technical field of exploration and measuring, and particularly provides a shale gas content tester and a testing method thereof. A sealing tank is arranged on a weight sensor, an analyzer is connected to a gas inlet of the sealing tank by a first metal pipeline connected with a first solenoid in series, a draining port of the sealing tank is communicated with a salt water slot by a second metal pipeline of which one end connected with the sealing tank extends into the bottom of the sealing tank, and the other end of the second metal pipeline extends into the bottom of the salt water slot; an exhausting device comprises a positive displacement pump, an exhausting port of the sealing tank is connected with the gas inlet of the positive displacement pump by a third metal pipeline connected with a second solenoid valve in series, the exhausting port of the positive displacement pump is connected with a fourth metal pipeline connected with a third solenoid valve in series, and the first solenoid valve, the second solenoid valve, the third solenoid valve and the weight sensor are respectively connected with a collecting and control system. The shale gas tester is simple in structure, low in cost, high in testing precision and high in automatic degree.

The invention provides a sintering method, and in particular relates to a method for rapidly sintering a solar wafer. A rapid thermal processing way is adopted to sinter large-area cells of silk-screen printing. The method comprises the following steps of: conveying, drying and exhausting cokes, rapidly heating to sinter as well as sintering at a high temperature and cooling. The method has the beneficial effects that the passivation effect is good, the minority carrier lifetime is improved greatly, the contact resistance of a Ag (silver) electrode and the quality of Al-BSFs (aluminum back surface fields) for the cells can be improved, the thermal stress is reduced, the contact resistances of solar cells are reduced obviously so as to improve the utilization of short wave spectra, the evenly good Al-BSFs are formed to improve the open-circuit voltages and filling factors of the cells, the warping of the cells is reduced, and the conversion efficiency and finished product ratio of the cells can be improved.

The invention relates to a vibration damping device in the vibration control field, in particular to a dynamic vibration absorbing device with tunable rigidity. The dynamic vibration absorbing device comprises a pedestal, an elastic element, one end of which is connected with the pedestal, an adaptor which is connected with the other end of the elastic element, an energy absorbing mass block which is connected with the adaptor, a tuner for driving the elastic element to stretch out and draw back in the axial direction of the tuner, and a first vibration sensor arranged on the pedestal; the tuner comprises a deformation material connected with the elastic element, and a drive mechanism for driving the deformation material to stretch out and draw back in the axial direction of the drive mechanism; and the material of the elastic element comprises a metal material, a carbon fiber composite material, a glass fiber composite material and an elastic rubber material. The elastic element of the device can be regulated in degree of stretching out and drawing back through the deformation material, so that the purpose of regulating the rigidity of the elastic element is achieved. The dynamic vibration absorbing device is wide in regulating range, and is strong in real-time property; and the controllable deformation range of the deformation material is within a micro dimension, and controllable precision is high.

The invention discloses an automatic adjusting type edge cutter for copper strip production, which comprises a base, a power motor, and two machine heads as well as cutter wheel groups correspondingly fixed on the machine heads. Each machine head is provided with a main transmission rod mounting hole and an auxiliary transmission shaft mounting hole. A main shaft sleeve is arranged in each of the two main transmission rod mounting holes, end parts of the two main shaft sleeves located outside the corresponding machine heads are fitted with a lower cutter wheel respectively, the output end of the power motor is in transmission connection with a main transmission rod, the main transmission rod penetrates through the two main shaft sleeves, a master gear is fitted over the surface of each main shaft sleeve, the two master gears are located in the corresponding machine heads respectively, an auxiliary shaft sleeve is arranged in each of the two auxiliary transmission shaft mounting holes, a turbine is fitted on the surface of each auxiliary shaft sleeve, the two turbines are located in the corresponding machine heads respectively, an auxiliary transmission shaft is arranged in each auxiliary shaft sleeve, the end part of each auxiliary transmission shaft located outside the corresponding machine head is fitted with an upper cutter wheel, a pinion is fitted over each auxiliary transmission shaft, and the two pinions are engaged with the corresponding master gears. The inventive edge cutter is convenient in operation.

The invention discloses an all motor-driven precision compression molding machine and an operation method. The compression molding machine includes a console and a feeding component, a compression molding machine main body, a discharge component and a rack component. The feeding assembly is used for sending a die and an assembly of a prefabticated member into the compression molding machine main body; the compression molding machine main body is used for machining the prefabticated member; the compression molding machine main body consists of compression mechanisms, a shift fork mechanism, a forming cabin and nitrogen delivery ports; a plurality of nitrogen delivery ports are disposed outside the compression molding machine main body for inputting nitrogen into the forming cabin to guarantee that after certain period of time, the nitrogen concentration can exceed a critical point so as to form a protective atmosphere, thus preventing oxidation of the prefabticated member and the die athigh temperature; and the discharge component is used for sending the assembly out of the compression molding machine main body. The driving mode has the characteristics of high control precision andconvenient operation. Motor driving can ensure that the control precision of die closing speed, position and forming force meets the technical requirements, and then can improve the product quality.

The invention discloses a gas-electric compound drive precise glass die forming machine and an operation method. The die forming machine comprises a console, a feeding component, a die forming machinemain body, a discharging component and a rack component, wherein the feeding component drives an assembly to successively pass through two feeding doors, only one feeding door is open at one time, and nitrogen is sprayed nearby the open feeding door in an incremental way for preventing the air from entering a forming cabin, and a nitrogen protection atmosphere inside the die forming machine mainbody is prevented from being destroyed; the die forming machine main body carries out multi-station transmission and processing on a prefabricated member; a discharging component drives the assembly to successively pass through two discharging doors, only one discharging door is open at one time, and nitrogen is sprayed at the open discharging door in an incremental way for preventing the air fromentering the forming cabin, so that the nitrogen protection atmosphere inside the die forming machine main body can not be destroyed. The as-electric compound drive precise glass die forming machinedisclosed by the invention has the technical advantages in many aspects such as high control accuracy, stable performance and high die forming quality.

The invention discloses a lifting type gantry laser cutting machine cross beam which comprises lifting air cylinders, control cross beam lifters, linear guiding shafts, zero stop blocks, oil buffers,fixing cross beam supporting plates, buffer rubber rings and a cross beam part; the lifting air cylinders, the control cross beam lifters, the linear guiding shafts, the zero stop blocks, the oil buffers, the fixing cross beam supporting plates and the buffer rubber rings are arranged on the left side and the right side; the cross beam part is located in the middle; the left end and the right endof the cross beam part are fixedly connected with the fixing cross beam supporting plates through bolts correspondingly; and lifting air rods in the control cross beam lifters can drive the fixing cross beam supporting plates and the cross beam part to carry out lifting motion. The lifting type gantry laser cutting machine cross beam is simple in structure and convenient to operate; a laser knifehead of a cutting machine is driven to lift vertically through the lifting motion of the cross beam part, so that the problem that the stroke of the laser knife head in the Z axis is not sufficient issolved, the controllable precision of the laser cutting machining process is improved and the cutting speed is raised significantly.

The invention discloses an experimental platform of an elephant-nose-imitated continuous robot. The experimental platform comprises a mounting table, a driving mechanism arranged on the mounting table, and a mechanical arm driven by the driving mechanism, the mechanical arm comprises a plurality of sections of flexible mechanical arms, a supporting spring is fixedly connected into each section offlexible mechanical arm, and each flexible mechanical arm comprises a spring and supporting discs arranged at the two ends of the spring. The driving mechanism comprises a plurality of driving assemblies, each section of flexible mechanical arm is driven by three driving assemblies, and the three driving assemblies are distributed on the mounting table with the supporting springs as the center ina 120-degree manner. The experimental platform is small in occupied space, compact in structure, good in flexibility of the mechanical arms, easy to measure and high in controllable precision, and hasa certain engineering application prospect.

The invention discloses a high-speed paint mixing tank. The high-speed paint mixing tank comprises an air pump, an air purifier, an air pipe, an aeration pipe, a flow meter, a material inflow pipe, atank body, an upper level gauge, an aeration hole, a lower level gauge, a stirring rod, a blade, and a temperature measuring instrument; Based on design of the traditional paint mixing tank, a pneumatic stirring device including the air pump, the air purifier, the air pipe, the aeration pipe, the flow meter and the aeration hole is added, blowing is carried out on inside of the paint while stirring, the flow speed of the liquid is increased, in addition, the increase of the liquid level gauge and the temperature measuring instrument can control the capacity and temperature of the liquid insidethe tank body, and the controllable precision is higher. The high-speed paint mixing tank has the advantages of simple structure, small volume and large power, and has strong practicability.

The invention discloses a self-adaptation controllable vibration metal cutting device and method based on super magnetostriction. A saw frame, a vibration mechanism, a saw beam, a driving belt wheel,a driven belt wheel, a saw strip, a hydraulic cylinder and a DSP chip are included. The vibration mechanism is fixed to the lower end face of the saw beam. A left guiding arm and a right guiding arm are arranged on the two sides of the vibration mechanism correspondingly. The base is arranged at the opening position in the upper end of the shell. The lower end face of the base is connected with anamplitude changing rod through a super magnetostriction material. The amplitude changing rod penetrates through the bottom face of the shell and is connected with a bearing frame. The outer side faceof the super magnetostriction material is sequentially sleeved with an exciting coil and a permanent magnet. The driven belt wheel and the driving belt wheel are provided with a rotation speed sensorand a torque sensor correspondingly. The rotation speed sensor and the torque sensor are connected with the DSP chip. The DSP chip is connected with the vibration mechanism through a PLC. Through thesimple structure design, saw strip vibration cutting can be achieved, saw strip tooth tips can more easily cut into the materials, and cuttings can be more easily discharged.

The invention belongs to the technical field of cast casting, and discloses a cooling heat radiation device for improving the cast coagulation efficiency. The cooling heat radiation device comprises awater inlet pipeline, a water outlet pipeline and a PLC (Programmable Logic Controller), wherein a plurality of cooling modules in parallel arrangement are arranged between the water inlet pipeline and the water outlet pipeline; each cooling module comprises a sealed cooling box; a water inlet communicating with the water inlet pipeline is formed in one end of the sealed cooling box; a water outlet communicating with the water outlet pipeline is formed in the other end of the sealed cooling box; a temperature control valve is arranged on the water inlet; a temperature sensor is arranged on the water outlet; a cooling pipe is arranged in the sealed cooling box; one end of the cooling pipe communicates with the water inlet; the other end of the cooling pipe communicates with the water outlet; and the PLC is connected with the temperature control valve and the temperature sensor. The cooling heat radiation device has the advantages that the operability and the controllability are high; the controllable precision is high; and each part of a cast can be cooled and coagulated according to the required temperature gradient. The invention also discloses a method for controlling the cast coagulation by using the cooling heat radiation device. The method has the advantages that the operability and the controllability are high; the controllable precision is high; and the quality of the prepared cast is high.

The invention discloses an assembly used for mounting a radial sealing pad of an air preheater. The assembly comprises two bimetal sheets and further comprises two rotating shafts parallel with each other, the two ends of the two bimetal sheets are all fixedly provided with connecting blocks, the connecting blocks at the two ends of one of the bimetal sheets are separately connected with corresponding connecting blocks on the other bimetal sheet through different rotating shafts in a hinging manner, and the two connected bimetal sheets are of a stacked relationship; when the two bimetal sheets are heated, the deformation directions are opposite; and when the two bimetal sheets deform after being heated, the end parts of at least one bimetal sheet can rotate around the corresponding rotating shafts. As the final staying position of the sealing pad connected to the assembly is more accurate, the controlled precision of the sealing pad position is higher, the sealing pad performs a great seal performance, and at the same time, the controllable performance of stress between the sealing pad and a fan-shaped plate is great. Therefore, the service life of the sealing pad adopting the assembly can reach more than three years without being maintained.

The invention discloses a full-automatic control system of a continuous production kiln in the technical field of full-automatic control systems. The left end branch of a mixing pipe is communicated with an air guide pipe and a fuel gas guide pipe, a fuel gas proportional valve is fixedly assembled on the mixing pipe, an air conveyor and an air electric valve are sequentially and fixedly assembled on the air guide pipe from left to right, a fuel gas conveyor and a fuel gas electric valve are sequentially and fixedly assembled on the fuel gas guide pipe from left to right, an electric control box comprises a PLC, the PLC is in bidirectional electrical connection with a kiln process management module, a kiln state monitoring module and an ignition detection controller, the PLC is in electrical output connection with a wireless communication module, continuous micro change can be achieved according to self-tuning of actual flow and set flow, the flow can be accurately controlled, kiln information parameters can be controlled in real time, visual management of monitoring is achieved, transparency is high, safety is improved, and firing adjustment of the kiln to products is completed in real time.

An integral-horizontal-moving pure mechanical toggle rod type drawing cushion with a permanent magnet synchronous servo motor for double-ended drive is of a left-right full symmetry structure. A machine body structure of the drawing cushion comprises a workbench. A lower mold is installed on the workbench. Supporting frames are distributed in the circumferential direction of the lower mold. The lower ends of the supporting frames penetrate through through-holes in the workbench and are fixed to a box body. The two ends of the workbench are fixed to the upper ends of vertical columns. The left side and the right side of the box body are connected with sliding blocks. The sliding blocks are matched with guide rails. The guide rails are fixed to the vertical columns. The lower ends of the vertical columns are connected to a base. The box body is hinged to a main transmission structure through upper toggle rods, and correspondingly, the base is hinged to the main transmission structure through the upper ends of lower toggle rods. A piston cylinder is installed on the upper portion of the middle of the base. The upper end of a piston is connected wit the main transmission structure. A through hole in the lower end of the piston cylinder is filled with compressed air. The drawing cushion is driven by the permanent magnet synchronous servo motor, blank holder force is controlled precisely, the displacement is moved accurately, the structure is simple, the service life is long, the drawing cushion is of a pure mechanical structure, and maintenance is convenient.

Disclosed is an ultra-wide frequency tuning quantum light source chip based on type-II parameter down-conversion. A plurality of waveguides which are in a serial or / and parallel combined mode and have polarized domain inversion areas are arranged on a ferroelectric material comprising lithium niobate, and the generated nonlinear process is subjected to type-II parameter conversion through the polarization period design of the domain inversion. In other words, the incident light conversion process under the parametric condition is a polarization combination mode of two kinds of orthogonal polarized light generated by linear polarization pumping. The chip type ultra-wide frequency tuning quantum light source provided by the invention has ultra-wide wavelength tuning capability, can meet various wavelength requirements, and realizes photon frequency conversion and frequency width tuning. The ultra-wide frequency tuning quantum light source chip can be used as a tunable correlated photon source of various wave bands and a wide tuning predictable single photon source, and can be used as a core basic light source of a light quantum information technology.

The invention provides a biosynthesis method of a high-performance olivine-type manganese-based phosphate positive electrode material, and an olivine-type phosphate material is synthesized by using a biomineralization mechanism of yeast cells and is used as an electrode material of a lithium ion battery. According to the biosynthesis method disclosed by the invention, the size, the structure, the morphology, the chemical composition, the crystal growth orientation and the like of nano inorganic salt particles can be more effectively regulated and controlled on the molecular level; wherein the mineralization growth process of phosphate crystals is regulated by utilizing a biological mineralization mechanism of yeast cells, and nano crystal LiMn0.8Fe0.2PO4 particles preferentially growing in the Li < + > transmission crystal orientation [010] direction are obtained; furthermore, by virtue of a high-temperature inert atmosphere heat treatment condition, yeast cells are thermally decomposed into a biomass carbon network in which amorphous carbon and nitrogen-doped graphene coexist, and a multi-stage nano in-situ composite structure is formed between the biomass carbon network and LiMn0.8Fe0.2PO4 nanocrystals, so that a three-dimensional conductive network of an efficient electronic path and an ion path is constructed, and the electrochemical performance of the manganese-based olivine type LiMn0.8Fe0.2PO4 positive electrode material is remarkably improved.

The invention discloses a static pressure gas thrust bearing allowing the throttling effect to be regulated and controlled. The static pressure gas thrust bearing comprises a bearing body. A heating device is arranged in the bearing body and is used for regulating temperature of gas flowing through a restrictor. By means of the structural design of the static pressure gas thrust bearing, the bearing throttling effect can be regulated and controlled.

The invention discloses a micro-adjustment device for improving elevation precision of a hanging belt of a bridge construction hanging basket. The micro-adjustment device comprises a cross beam, a through hole formed in the cross beam, a clamping seat arranged in the through hole and a micro-adjustment structure arranged in the through hole and used for controlling the clamping seat to move. The cross beam is separated from the clamping seat and can move relative to the clamping seat; the clamping seat is used for supporting a pin shaft, the fine adjustment structure is used for adjusting andcontrolling the clamping seat to move so as to adjust the height of the clamping seat, and therefore fine adjustment is achieved, the purpose of accurately controlling the elevation is achieved, elevation control is achieved through the structure, and tedious and potential safety hazards caused by repeated replacement of base plates with different thicknesses can be avoided.

The invention discloses traction type high-precision manure throwing and spreading applying equipment. The traction type high-precision manure throwing and spreading applying equipment comprises a walking part, a compartment, a material discharge hydraulic cylinder, a material spreading mechanism and a control part, wherein the compartment is arranged on the walking part; the material discharge hydraulic cylinder is hinged to the front end between the compartment and the walking part; the material spreading mechanism is arranged between the interior of the compartment and the walking part, andis used for weighing the material, and throwing the material; the control part is arranged at the side part of the compartment, and is electrically connected with an electric utilization part of theequipment; the control part and the material discharge hydraulic cylinder are connected with corresponding systems on a tractor for pulling the equipment. The traction type high-precision manure throwing and spreading equipment has the advantages that the farmyard manure is uniformly spread into a farmland under the pulling action of the tractor, the throwing and spreading are uniform, the controllability precision is high, the utilization rate of the manure is improved, and the waste of manure and excessive usage amount at local part are reduced.

The present application relates to a multi-stage refrigeration method, device, computer equipment and storage medium of the above-mentioned air-conditioning unit. Set the third temperature, start the fixed-frequency unit and the variable-frequency unit asynchronously, give priority to the fixed-frequency unit for rapid cooling, and delay the start-up of the variable-frequency unit to avoid excessive temperature changes at the air outlet due to the sudden increase in cooling capacity; The difference between the temperature of the air supply outlet and the preset temperature, adjust the working frequency of the frequency conversion unit, adjust the cooling capacity of the air conditioning unit again, further optimize the temperature of the air supply outlet, and avoid the sudden change in the temperature of the air supply outlet to the environment (surrounding equipment or people). Influence, effectively reduce the variation range of air supply temperature.

The invention relates to a control system for manual or automatic electric-control mechanical gearboxes, which comprises a gear selection device, a gearbox push-and-pull device, a clutch control device, a throttle control device, a central control box and connecting wires. In the invention, at least two electric ball-screw push-and-pull devices are arranged on the upper cover of the gearbox, are connected with the tail end of a shifter fork and realize the movement of the shifter fork; the other electric ball-screw push-and-pull device pulls the clutch to cut off the power of the engine at the time of gear shifting; and meanwhile, the throttle control device keeps the engine speed unchanged at the time of gear shifting, thereby achieving the goal of gear shifting, solving the technical problem that the power interruption and the like in the prior mechanical automatic gearbox at the time of gear shifting affect the comfort for driving. The invention has the advantages of simple structure, high reliability, high controllable precision for push and pull force and operating rate, low price, high work efficiency, good product uniformity, and convenient maintenance and replacement.

The invention provides an actuating mechanism and a switching device, and belongs to the technical field of low-voltage electrical appliances. The actuating mechanism comprises a static metal core fixedly arranged on a base; a moving metal core is in driving connection with a moving contact assembly; one end of a first elastic member is connected with the static metal core; and the other end of the first elastic member is connected with the moving metal core; a coil is wound on the moving metal core and / or the static metal core, and is used for enabling the moving metal core to move towards the static metal core through magnetic field force to drive the moving contact assembly to be conducted with a static contact when the coil is forwards electrified; when the coil is reversely electrified, the moving metal core is enabled to move towards the direction far away from the static metal core through the reset force of the first elastic member so as to drive the moving contact assembly tobe separated from the static contact. Magnetic control is adopted to be matched with the first elastic member, so that the opening and closing speed of the actuating mechanism can be increased, quickswitching between two sections of incoming power supplies can be realized in a shorter time, and the stability of continuous operation of important electric equipment is ensured.

The invention provides a wine dispenser, and belongs to the technical field of wine distribution equipment. The problem that the air exhaust efficiency controlling efficiency of a wine dispenser in the prior art is low is solved. The wine dispenser comprises a main body, a pressure reduction cavity and an air inlet structure for supplying air to the pressure reduction cavity. The outer wall of themain body is provided with an installation groove, and the pressure reduction cavity is located in the installation groove. The wine dispenser further comprises an adjusting sleeve, the side wall ofthe installation groove is provided with an air outlet communicating with the pressure reduction cavity, the inner end of the adjusting sleeve is inserted into the installation groove and is in threaded connection with the side wall of the installation groove, and the inner end of the adjusting sleeve can partially block the air outlet. Air exhaust flow can be adjusted, and the wine dispenser hasthe advantage of being high in air exhaust efficiency controlling precision.