121results about How to "Reduce uncontrollable factors" patented technology

The invention relates to a manufacturing method for continuous direct spinning fine denier yarn by uhmwpe jelly method, belonging to the spinning area and solving the problem that the single yarn or yarn beam generated by prior technology is on the high side and bad uniformity so that the difficulty for stability of manufacturing and quality of subsequent product is enhanced and the applicable range is limited. The method is provided with reasonable and compact process flow, stable process control, skillful operation and improving the quality and uniformity of product. By the method continuous stable spinning in line is realized in process parameters and the production efficiency is improved. The labor cost and intensity are lessened. Because there is less turnover link in the middle of process it is favor of decreasing producing consumption and uncontrollable factors. Under the stable running, uhmwpe fine denier yarn or yarn beam with even and stable quality, and good performance is provided.

The invention discloses a chill-free processing method of a wind-driven generator hub, and the method comprises the following steps: manufacture of a mould, manufacture of a sand mould and moulding by casting, wherein in the manufacture of the sand mould, a completely opened bottom gating system is utilized; an ingate is designed to be disc-shaped; a downgate on an upper sprue is a quantitative ladle stopper sprue gate; the ratio of the components is F(straight):F(transverse):F(internal)=1:(1.5-2):(25-28); a rectangular vent hole is arranged at the highest point at the top face of a casting; the total section area of the rectangular vent hole is greater than that of the ingate; a casting head is arranged on the top face of the casting; the height of the single casting head is greater than 400 mm; no chills are discharged during the manufacture procedure; in the moulding by casting, the casting speed of melted iron entering into a casting cavity is controlled within 0.5-1.0 m/s; the casting time is controlled within 150-210 seconds; and the casting temperature is between 1300 and 1310 DEG C. The chill-free processing method of the wind-driven generator hub disclosed by the invention has the advantages that the method adapts to the large scale production of low-temperature ductile iron castings for large wind-driven generator with quite high requirements, the process is simple, and the production cost is low.

The invention discloses a processor for defective cigarettes and aims to solve the problem that currently, recycling of the defective cigarettes mainly relies on blowing and manual cutting to separate filter tips, workload is high, and efficiency is extremely low. The processor for defective cigarettes comprises a feeding machine, vibrating screens, a conveying belt and a camera-shooting automatic cutting system. The processor for defective cigarettes is a system for automatically separating cut tobacco and filter tip paper and is characterized in that the feeding machine automatically organizes the cigarettes to output the cigarettes one by one in a row, the vibrating screens further separate the cigarettes cut by the camera-shooting automatic cutting system, and the separated cut tobacco and filter tip paper are discharged automatically. The processor for defective cigarettes has the advantages that the processor is simple to operate and high in automation level, workers only need to manually add the defective cigarettes into the feeding machine, and the workload of the workers is reduced; manual work can be replaced by the machine, uncontrollable factors such as work emotionalization caused by high workload and excessive fatigue during manual tobacco separating are avoided, quality control rate is increased, and the processor is low in cost and high in efficiency.

The invention relates to a detection system and a method for monitoring fracture development of a coal pillar-free gob-side entry retaining floor. The method comprises the following steps of chiseling a floor drilling field at one side of the coal pillar-free gob-side entry retaining, drilling in a floor rock layer according to different angles, gradually butting transparent hollow pipe sections by a butting sealing system, and sending into each drilling hole; grouting and anchoring a gap between each drilling hole and the corresponding transparent hollow pipe, enabling a detection positioning assembly to record the fracture of the drilling surrounding rock according to different scales of a measuring tape, performing monitoring tasks on evolution of floor mining failure rule for multiple times in different mining phases until the data is stable, and then finishing the observation. The method has the advantages that the floor small-angle drilling hole, the floor medium-angle drilling hole, and the floor large-angle drilling hole extend from the drilling field to the floor of a to-be-mined coal layer and are distributed in parallel in a stereo way; by observing the fracture condition of adjacent drilling holes in the same time and the fracture condition of the same drilling hole in different coal mining phases, the development state of the plastic failure area of the floor and the development state of the failure area of the floor after the coal bed is mined are determined, so as to provide reliable data reference for safety construction.

The invention discloses a cluster control system of a light and energy-saving wall plate forming production line. The cluster control system is used for automatically controlling the light and energy-saving wall plate forming production line and comprises a control center, a preprocessing subsystem, a material metering subsystem, a stirring subsystem, a pouring subsystem, an intelligent mold scheduling subsystem, a penetration tube subsystem and a carrying subsystem, and the preprocessing subsystem, the material metering subsystem, the stirring subsystem, the pouring subsystem, the intelligent mold scheduling subsystem, the penetration tube subsystem and the carrying subsystem are respectively connected with the control center. A whole wall plate producing process is controlled by a computer, the forming quality of light wall plates is greatly improved, uncontrollable factors are reduced, the quality of products is stable, the whole light and energy-saving wall plate forming process is finished automatically, and labor intensity of workers is reduced; and waste of raw materials is reduced, productivity is increased, and production cost is reduced. The light and energy-saving wall plate forming production line is automatically controlled, the labor intensity of the workers can be reduced, the waste of the raw materials is decreased, the production cost is lowered, and the productivity can be improved.

The invention discloses a system and method for monitoring reserved coal pillaralong-goaf remained gateway floor crack development. A floor drill site is dug in one side of a reserved coal pillaralong-goaf remained gateway, different depths of drilling is conducted on a floor, and a butt joint sealing system is adopted to deliver transparent hollow pipes to drill holes in a section-by-section butt joint mode; after casting is conducted in gaps between the drill holes and the transparent hollow pipes for anchorage, a detecting and positioning assembly is utilized to record surrounding rock gaps of the drill holes at different positions on a measuring ruler, and floor's mining fracture law evolution monitoring tasks are carried out at different mining stages for multiple times till data trends to stable observation finishing. According to the method, floor shallow part drill holes, floor middle deep drill holes and floor deep part drill holes extending from the floor drill site to the mining coal floor and arranged side by side are arranged in a stereo mode, the middle floor plastic failure zone developmental morphology during mining and floor failure zone developmental morphology can be delineated by observing the adjacent drill holes and the gap situations of the same drill holes at different coal mining stages at the same time, and reliable data reference can be provided for safe construction.

The invention relates to a fretting fatigue test device for a high temperature rotating bending fatigue testing machine. The fretting fatigue test device comprises a clamp for clamping a fatigue specimen, a support stress loading ring arranged at the outer side of the fatigue specimen, a strain sensing unit arranged on the outer side surface of the supporting stress loading ring, and a data acquisition unit connected with the strain sensing unit. Two loading bolts are oppositely arranged on the side wall of the supporting stress loading ring. A fretting test block is arranged on the inner endof the loading bolt. The fretting test block is in contact with the outer surface of the fatigue specimen and loads a fretting load. The outer end of the loading bolt is fixed to the stress loading ring through a fixing nut. Compared with the prior art, the fretting fatigue test device can be integrally placed in a high-temperature environment; the surface of the fatigue specimen subjected to a bending load is stretched and compressed during rotation, so that the fatigue specimen and the ceramic test block form a slight slip amplitude by strain caused by the tensile and the compression, thereby realizing the rotating bending fretting fatigue test under a high-temperature condition.

The invention discloses a preparation method of a meat freshness indication array. The method comprises the following steps of uniformly mixing and dissolving methylcellulose and polyethylene glycol-6000 in distilled water to obtain a solution A; dividing the solution A into nine parts to obtain solutions A1 to A9, respectively adding corresponding indicators and adding reagents into the solutionsA1 to A9, and drying to obtain indicator films B1 to B9; and finally, preparing the indicating films B1 to B9 into the meat freshness indicating array. The invention further discloses the meat freshness indication array and application thereof. The indication array comprises nine indicators, can indicate the freshness state of meat at the same time, and is comprehensive in obtained information, accurate in measurement result, visual and clear in result, easy in implementation of the preparation method, low in cost and simple in operation during use. The invention belongs to the technical field of fresh food fresh-keeping detection, and is used for detecting meat freshness.

The invention provides an analog quantity automatic check system based on a safety instrument. The system comprises a master control computer, a digital module, a programmable resistor, a dielectric withstand voltage tester, an oscilloscope, a programmable direct-current power source, a programmable digital multimeter, a signal generator, a signal conditioning box and a clamp. The master control computer, the digital module, the programmable resistor, the dielectric withstand voltage tester, the oscilloscope, the programmable direct-current power source, the programmable digital multimeter and the signal generator are all connected with the signal conditioning box, and the signal conditioning box is connected with the clamp through a flexible cable. A modularized structure is adopted for the analog quantity automatic check system based on the safety instrument, so that the system is convenient to detach, the measurement range can be expanded, and the system can adapt to different occasions; the check standards are objective and unified, and real-time data acquisition, processing, display and record playback can be achieved; uncontrollable human factors are reduced, and the production quality is guaranteed more reliably due to automation.

The invention discloses a clean technique for producing acrylate-hydroxy ester by adopting a continuous process. The clean technique for producing acrylate-hydroxy ester by adopting the continuous process comprises the following steps: 1) dissolving a catalyst and a polymerization inhibitor in acrylic acid, mixing and measuring, and then continuously pumping the obtained mixture into a tubular reactor with ethylene oxide at a certain ratio, wherein the mole ratio of acrylic acid to ethylene oxide is 1:(1.1-1.5); and 2) after reaction is finished, recycling ethylene oxide through low boiling fraction removal, and causing the rest reaction product to continuously enter an evaporator, so that the finished product is obtained. The clean technique for producing the acrylate-hydroxy ester by adopting the continuous process has the beneficial effects that ethylene oxide is excessive, so that the reaction time is short, and less byproducts are produced; reaction polymerization and reaction exotherm controllability is improved, and the production safety is greatly improved; the reaction time is short, the usage amount of the polymerization inhibitor is reduced, colour number can be effectively reduced, and the production cost is reduced; no steam is consumed in a continuous reaction process, and the production energy consumption is reduced; no replacement is required to be carried out after reaction is normally carried out, basically no nitrogen is consumed during production, and the amount of waste gas discharged out is reduced; and ethylene oxide in a degassing process during normal production can be recycled and is not discharged out, so that no pollution is produced to the air and water.

The invention provides a multi-station hot-pressing system for a brake pad. The multi-station hot-pressing system comprises a supporting pedestal, a servo manipulator, a mold feeding device, at leastone mixing and weighing machine and at least one brake pad hot-pressing machine; the brake pad hot-pressing machine is installed on the supporting pedestal; the mixing and weighing machine is installed at the lateral upper direction of the brake pad hot-pressing machine; the servo manipulator is installed by the side of the brake pad hot-pressing machine; the mold feeding device is installed on the servo manipulator; and the mold feeding device can be driven by the servo manipulator to receive a mixed friction material inside the mixing and weighing machine and put the mixed friction materialinto a mold cavity of the brake pad hot-pressing machine. According to the multi-station hot-pressing system provided by the invention, the mixing and weighing machine is used for mixing and weighingthe material; the servo manipulator is used for driving the mold feeding device to implement the material receiving and putting work, so labor is saved; man-made uncontrollable factors are reduced; and meanwhile the cost is lowered and the production efficiency is improved as well.

The invention relates to a wearable mouse brain stimulation ultrasonic transducer. The wearable mouse brain stimulation ultrasonic transducer comprises a circulator and a piezoelectric array element;a backing block is embedded in the circulator; the piezoelectric array element is connected with the backing block; the piezoelectric array element includes a piezoelectric material layer; one side surface of the piezoelectric material layer has a concave surface, and the shape of the concave surface matches the outer contour shape of a mouse brain skull; an outer electrode is arranged on the concave surface; an inner electrode is arranged on the other side surface of the piezoelectric material layer; an installation hole for installation of an SMA interface is formed in the backing block; theouter electrode is electrically connected to a threaded electrode of the SAM interface; and the inner electrode is connected to a central electrode of the SAM interface. In the technical scheme, thetransducer can achieve focusing by using the concave surface, a large amount of energy is projected to a small area to achieve nerve stimulation; MRI is the highest monitoring method for biological tissue resolution in the prior art, the mouse brain is small, MRI detection can be performed during ultrasonic stimulation so as to achieve a similar real-time detection effect.

The invention relates to the technical field of biology, and particularly discloses a method of quickly measuring titer of ascovirus. The method includes: resuspending logarithmic phase Sf9 insect cells; placing into an incubator, standing for culture for 30 min until the cells are attached to walls, abandoning a supernatant culture medium, and replacing with a new Sf-900IISFM culture medium; utilizing a blood ball counting plate to measure cell concentration; taking and well mixing Sf9 insect cell suspension with ascovirus diluent, and inoculating to a 96-hole cell culture tray; disposing in the incubator for culture for 24 h, adding trypan blue dyeing liquid into each hole, and recording dyed cell number and total cell number of each hole; calculating Sf9 insect cell death rate of each hole, determining that the corresponding hole is infected with ascovirus if cell death rate of each hole is lower than that of a control group, determining that the corresponding hole is not infected with ascovirus if not, and calculating TCID50 of ascovirus according to a formula. The method combines cell dyeing, can be used for quick measuring of titer of ascovirus and is more accurate in measuring result.

The invention relates to a method for preparing a human body part model, in particular to a method for preparing a bionic hollow human body part model through 3D printing. The defects that a traditional casting and injection molding technology is long in model preparation time, high in cost and small in individual difference, and a medical model obtained through 3D printing cannot be applied to training such as surgical suture and repeated tearing are overcome. The method comprises the steps of data acquisition, data processing, model building, shell mold, hollow inner mold and assembly part mold preparation, mold treatment, mold assembly and retention, silica gel infusion, mold drawing and the like. The bionic hollow human body part model prepared through the method is real and is close to the real surface hardness of a target human body part, the surface is smooth and not sticky, the thickness and distribution of the model are consistent with those of the human body part, the tissuestructure is observed obviously, and repeated tearing is resisted. The method is suitable for surgical simulation, suture surgery training, clinical teaching and the like.

The invention discloses an air distribution plate for preparing double-filter-capsule filter rod and a preparation device. The air distribution plate comprises a plate body, an inside suction slot, anoutside suction slot and an alternating air blowing structure, wherein the inside suction slot and the outside suction slot are both arranged on the plate body, an arc-shaped groove body is coaxial with the plate body, a radius of the inside suction slot is less than that of the outside suction slot, and one end of the inside suction slot is radially flush with one end of the outside suction slot; the central angle of the outside suction slot is 90-340 degrees, the central angle of the inside suction slot is at least 30 degrees, and at least 30 degrees smaller than that of the outside suctionslot; the alternating air blowing structure is arranged at one end of the inside suction slot radially flush with the outside suction slot; the inside suction slot and the outside suction slot are connected with a vacuum pump, the vacuum pump provides negative pressure for adsorbing negative pressure of a filter capsule; the alternating air blowing structure is connected with the air source, andprovides positive pressure for transferring the filter capsule to next process.

The invention relates to a goods supply method and system, a processing device and a computer storage medium, and relates to the field of supply chain operation, and the method comprises the steps: obtaining daily goods input and output data and a goods input period T2 of a purchaser; averaging to obtain average consumption V1; obtaining the purchase time B according to the last purchase time A and the purchase period T2; calculating to obtain an estimation coefficient and a goods arrival coefficient; acquiring in-transit goods data; determining the quantity of goods to be purchased accordingto a first estimated value obtained by the current average consumption V1 * estimation coefficient, a second estimated value obtained by the average consumption V1 * arrival coefficient, the inventoryand the in-transit goods data, and generating a preliminary purchase list; correcting the preliminary purchase order according to a big data processing method to obtain a final purchase order; sending the final purchase order to a purchaser and a purchase platform; the purchasing platform obtaining a confirmation result of the purchaser for the final purchasing list; and if so, the purchasing platform sending a final purchasing list to the supplier after payment. The method has the effect of more accurate goods supply.

The invention discloses a binary mixed solvent system and an application of the binary mixed solvent system to the preparation of a perovskite material. The binary mixed solvent system comprises an amine compound and ethanol. The invention further discloses a perovskite precursor solution, which comprises a perovskite precursor and a solvent, wherein the solvent includes the amine compound and theethanol. The invention further discloses a preparation method of a perovskite film. The preparation method comprises the steps of carrying out film forming treatment on the perovskite precursor solution at the room temperature to prepare the perovskite film. The amine compound-ethanol binary mixed solvent system is used for preparing a precursor solvent of the perovskite film by a one-step spin coating method, so that the preparation process of the precursor solution is simplified, the occurrence of uncontrollable factors is reduced, and the large-area high-quality perovskite film can be prepared conveniently and rapidly; and the obtained perovskite film does not need any annealing post-treatment process, so that the technological process is simplified.

The invention discloses a spinning quality fluctuation-oriented key factor extraction method. The method is characterized by comprising the following steps: S1, constructing a multi-Agent-based production process uncertainty prediction model by means of a multi-Agent technology, wherein the uncertainty prediction model comprises a system management Agent, an object management Agent, an execution Agent, a human-computer interface Agent, a data interface Agent, a source data Agent, an initialization Agent, a target data Agent, a query Agent, a statistic Agent and an analysis Agent; S2, completing the design of acceptance functions and influence functions; S3, completing the standardized processing of data; S4, completing the calculation of correlation coefficients; S5, carrying out dependency evaluation on the basis of DEA; and S6, extracting key factors. According to the method disclosed in the invention, the fluctuation extraction in the spinning process is solved, so that the product efficiency is improved and the uncontrollable factors are reduced to minimum.

The invention discloses a vertical metal corrugated pipe bending device for an anti-leakage test after a metal corrugated pipe is bent. The device comprises an oil pressure system and an output movingrod extending out of the oil pressure system, and a connector at a top end of the output moving rod is provided with two slots with fastening screw holes and is used for being connected with an arc-shaped pressing plate; the device also comprises a sample containing tank, through slideways for supporting rollers and supporting base plates to freely move up and down are arranged in edges of two sides of an opening of the tank, and a 3m steel ruler is bonded to an end portion of a side surface of each tank and used for span adjustment; and the sample containing tank is connected with the oil pressure system through a connecting frame. The invention provides a test span of the device and a set of arc-shaped pressing plate matched with the device so that a radian of the bent metal corrugatedpipe is uniform, accuracy of a test result is ensured, a personal error of the test is greatly reduced, and the device has an extremely high popularization prospect.