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Method for manufacturing a composite material rotationally symmetrical part with locally optimized properties
This invention relates to a method for manufacturing a composite rotationally symmetric component (10) of varying thickness for a gas turbine, comprising: producing a fiber fabric (140) in the form of a mesh by three-dimensional or multi-layer weaving; winding the fiber fabric (140) in multiple overlapping layers (141, 142, 143, 144) onto a mandrel (200) with a profile corresponding to the casing to be manufactured, to obtain a fiber preform with a shape corresponding to the casing to be manufactured; and densifying the fiber preform by a matrix. During the winding of the fiber fabric (140) onto the mandrel, a fabric web (150) is placed between at least one or more adjacent turns of the fiber fabric, the fabric web (150) having a structure different from the three-dimensional weaving and in the axial direction (D... A The width of the ) is smaller than the width of the fiber fabric (140).
Owner:SAFRAN AIRCRAFT ENGINES SAS
A portable millimeter wave active denial shield
The application discloses a portable millimeter wave active denial defense riot shield, which comprises a shell and further comprises a supporting assembly for providing support for the shield and an adjusting assembly for adjusting the height of the shield; the supporting assembly comprises a shield, supporting rods, a sliding cylinder and a screw rod A; the shield is hinged to the shell through a hinge base at the bottom end of the shield; two supporting rods are respectively hinged to the shield at two sides of the shield; the other ends of the two supporting rods are respectively hinged to the sliding cylinder through hinge bases on the other ends; the sliding cylinder is slidingly connected to the shell; the screw rod A is threadedly connected to the axis of the sliding cylinder; the screw rod A is rotationally connected to the shell in the shell; and the shield is connected to the adjusting assembly; and the shield can be effectively prevented from being knocked down by impact.
Owner:INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
Fresh fruit whole-fruit pretreatment system for fruit grain processing
The utility model relates to a whole fresh fruit pretreatment system for fruit grain processing, which comprises a controller, an enzymolysis treatment tank, an acid treatment mechanism, a neutralization and dilution treatment mechanism and an alkali treatment mechanism and is matched with a whole fresh fruit enzyme treatment method for fruit grain processing. The acid treatment mechanism comprises a transfer box, an acid treatment tank and a first conveying mechanism, the transfer box is provided with a material outlet, the neutralization and dilution treatment mechanism comprises a spraying mechanism, a neutralization and dilution treatment tank and a second conveying mechanism, and the alkali treatment mechanism comprises an alkali treatment tank and a third conveying mechanism. The treatment system is reasonable in structural design and comprises an enzymolysis structure, an acid treatment structure after enzymolysis, a neutralization dilution treatment structure and an alkali treatment structure, feeding and discharging are convenient from the beginning of enzymolysis, control over enzymolysis process parameters is facilitated, the feeding amount is large, single fresh fruits cannot be damaged, a high-quality raw material guarantee is provided for the post-treatment procedure, and the product quality and the effective efficiency are both considered.
Owner:ZHEJIANG KEKEJIA FOOD CO LTD
Intelligent rice bran oil enzymatic deacidification system
This invention discloses an intelligent enzymatic deacidification system for rice bran oil, comprising a reaction chamber, in which a circulating belt assembly is fixedly installed, and multiple fine mesh frames for placing catalytic enzymes are fixedly installed on the circulating belt assembly, with at least two of the fine mesh frames immersed in the rice bran oil within the reaction chamber; it also includes a concentration monitoring device, a temperature monitoring device, and a controller, wherein the concentration monitoring device and the temperature monitoring device are electrically connected to the controller, and the controller controls the movement of the circulating belt assembly based on the fatty acid content monitored by the concentration monitoring device, thereby controlling the movement of the fine mesh frames; by setting the circulating belt assembly to drive the fine mesh frames containing catalytic enzyme particles to be sequentially immersed in the rice bran oil, the average activity of all catalytic enzyme particles immersed in the rice bran oil is always maintained within a certain range.
Owner:JIANGSU KANG ZHI YUAN GRAIN & OIL
Method, device, equipment and storage medium for time-frequency synchronization control of four-wheel steering power assist in automobiles
ActiveCN117382722Bcontrol timeavoid damageSteering linkagesAutomatic steering controlSteering wheelSynchronous control
This invention discloses a method, device, equipment, and storage medium for time-frequency synchronous control of four-wheel steering assist in automobiles. The method includes: determining a normalization coefficient for the difference in target steering assist for each steering wheel based on the target steering assist change value of each steering wheel; determining a theoretical steering assist coefficient for each steering wheel based on the maximum change in steering assist for each steering wheel within a single task cycle; calculating and determining the current transient target steering assist for each steering wheel based on the normalization coefficient for the difference in target steering assist and the theoretical steering assist coefficient; and controlling the time required for the transient steering assist change of each steering wheel to reach its steady-state target steering assist to be equal. This invention considers the maximum change in steering assist for each steering wheel, thus avoiding over-capacity operation of the steering mechanism of each steering wheel; and controls the time required for the transient steering assist change of each steering wheel to reach its steady-state target steering assist to be equal, thus avoiding the problem of uncoordinated steering assist.
Owner:DONGFENG OFF ROAD VEHICLE CO LTD
Iot-based terminal device interaction management method and system
The application provides an Internet of Things-based terminal device interaction management method and system, which identifies a terminal device outside an Internet of Things after the terminal device requests to connect to the Internet of Things, allocates a time-limited key to the terminal device outside the Internet of Things, controls the time when the terminal device outside the Internet of Things accesses the Internet of Things, and ensures that the terminal device inside the Internet of Things can connect to the terminal device outside the Internet of Things only when the terminal device inside the Internet of Things is in an idle state. Meanwhile, after the terminal device inside the Internet of Things connects to the terminal device outside the Internet of Things, the terminal device inside the Internet of Things can adapt to the connection state of the terminal device inside the Internet of Things, avoid interference of the terminal device outside the Internet of Things on the Internet of Things, and ensure the data security of the Internet of Things.
Owner:HUIZHIAN INFORMATION TECH CO LTD
Lithium ion battery negative electrode material powder pressure increasing system
ActiveCN224118291Ucontrol timedegree of controlLarge containersBulk conveyorsElectrical batteryMaterials processing
The utility model discloses a lithium ion battery cathode material powder pressure boosting system, which relates to the technical field of cathode material processing and sequentially comprises a feeding device, two heating devices and a cooling device. The feeding device comprises a feeding bin, a cyclone separator and a first Roots blower, a first weighing module, an airflow arch breaking device and a first drawer type iron remover are arranged in the feeding bin from top to bottom, and the bottom of the feeding bin is connected with the cyclone separator through a conveying pipeline; a first pulse dust collector, a second weighing module, a third level gage and a first jacking arch breaking device are arranged in the cyclone separator from top to bottom, and the first Roots blower is connected with the cyclone separator through a first blower pipeline; the heating device sequentially comprises a heating feeding pipeline, a heating feeding spiral device, a heating kiln and a heating discharging pipeline, and the bottom of the cyclone separator is connected with the heating feeding pipeline of the corresponding heating device. According to the scheme, efficient powder pressing and lifting of the negative electrode material can be achieved, and the product quality is guaranteed.
Owner:四川杉杉新材料有限公司
Fluorination furnace facilitating feeding
The utility model discloses a fluorination furnace convenient to loading relates to fluorination reaction technical field, including furnace body and feed inlet, the feed inlet is located one end at the top of furnace body, is equipped with the conveying cylinder on the furnace body, the conveying cylinder top is equipped with first motor, first motor output is equipped with spiral conveying rod, spiral conveying rod rotatory connection is in the conveying cylinder inside, the conveying cylinder lower part one end is equipped with the feed frame, the conveying cylinder upper part one end is equipped with the discharge frame, and the discharge frame is located above the feed inlet. The utility model adds solid reactant in the conveying cylinder inside, then rotates spiral conveying rod, reaches the effect convenient for adding solid reactant to the inside of furnace body, can more accurately control the adding time and rate of reactant, to maximum limit improves the reaction efficiency and selectivity, not only can simplify the operation process, reduces the operation difficulty, can improve work efficiency.
Owner:SHENYANG INST OF TECH
Seepage internal erosion evolution experimental equipment capable of controlling leakage outlet position height
ActiveCN224081447UEffectively observe erosion damageEffectively observe changes in cavity morphologyWeighing by removing componentWeather/light/corrosion resistanceWater storageSoil science
The utility model relates to the field of geotechnical engineering, in particular to seepage internal erosion evolution experimental equipment capable of controlling the height of a seepage outlet position, which comprises a box body, a water storage box, a partition plate, a seepage inlet, a soil box, a seepage outlet and a collection box, the seepage inlet is formed in the middle of the partition plate, the multiple seepage outlets are formed in the lower portion of the right side wall of the soil box in the vertical direction at intervals, and the collecting box is arranged below the seepage outlets. The water storage tank supplies water through an upstream water level control device, the water level in the water storage tank and the sandy soil height in the soil tank are larger than the height of the seepage inlet, and the height of the seepage inlet is larger than the height of the seepage outlet; and plugs are arranged on the seepage inlet and the seepage outlet. According to the utility model, the development process of sand seepage internal erosion and particle migration disasters under laboratory conditions is simulated by changing the height of the seepage outlet position.
Owner:NANCHANG UNIV
Vibrating bar capable of controlling vibrating depth and vibrating time
ActiveCN224213799Ucontrol timeAvoid over-vibrationBuilding material handlingGear wheelClassical mechanics
Owner:CSCEC STRAIT CONSTR & DEV
Screen stretching device of screen printing plate
ActiveCN224060648Uplay a role in stretchingwon't impactForme preparationScreen printingMechanical engineering
The utility model relates to a screen stretching device of a screen printing plate. A channel formed in the main block; the pressing block is arranged in the main block in a sliding manner; the lifting mechanisms are arranged at the two ends of the main block; wherein the silk screen penetrates through the main block; one end of the channel is communicated with an air source, and the other end of the channel extends towards the silk screen and the pressing block. The lifting mechanism drives the main block to move up and down; when the pressing block slides, the other end, extending towards the silk screen, of the channel is shielded or opened. The problem that in an existing scheme, due to the fact that a silk screen penetrates through a clamping plate manually and is arranged repeatedly, the silk screen stretching efficiency is low is solved.
Owner:SUZHOU SHAOCHEN INTELLIGENT TECH CO LTD