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94results about How to "Improve practical efficiency" patented technology

Temperature measuring method and apparatus thereof

Temperature measuring equipment and method thereof are disclosed, wherein the positions of privileged sites of a target to be measured are positioned; the thermo-detector is moved to aim at the positions of the determined privileged sites mentioned above; measuring the temperature of said privileged sites; correcting the measured temperature by the thermo-detector, according to the position relation between the target to be measured and the thermo-detector. The present invention can obtain positioning information of accurate sites, with improved temperature measurement accuracy.
Owner:北京行者华视网络系统集成技术有限公司

Double normalization recognition method for directly forecasting and recognizing transformer winding fault type

InactiveCN102778632AImprove practical efficiencyAccurately predict mechanical failuresElectrical testingInterference resistanceHide markov model
The invention discloses a double normalization recognition method for directly forecasting and recognizing a transformer winding fault type, and relates to a novel method for directly forecasting and recognizing the transformer winding fault type based on a hidden markov model and fuzzy recognition. The method comprises the following steps of: step 1, establishing a databank about various mechanical types of transformer windings; step 2, establishing a fuzzy recognition bank, and providing membership degrees and recognition accuracy of each type of fault; step 3, establishing a hidden markov model recognition bank, providing a similar probability and recognition accuracy of each fault recognition; step 4, obtaining a weighting parameter through a hidden markov model recognition probability value; step 5, determining a weighting parameter of the hidden markov model and fuzzy recognition; step 6, obtaining a double normalization recognition index for recognizing the transformer winding fault; and step 7, directly recognizing the state and type of the transformer winding fault through the calculated dg recognition index. The method cannot be influenced by anthropic factors, is strong in environment interference resistance and has no errors caused by obtained conversion.
Owner:SHANGHAI JIAO TONG UNIV

Molecular sieve/fiber composite material and preparation method therefor

The invention provides a molecular sieve / fiber composite material. The molecular sieve / fiber composite material comprises molecular sieves and fibers, wherein the molecular sieves are distributed on surfaces of the fibers and are in contact with the surfaces of the fibers directly, the particle size D90 of the molecular sieves is 0.01 to 50 microns, and the particle size D50 of the molecular sieves is 0.005 to 30 microns; and the molecular sieves are uniformly distributed on the surfaces of the fibers. The invention further provides a preparation method for the molecular sieve / fiber compositematerial and various uses of the molecular sieve / fiber composite material. According to the molecular sieve / fiber composite material, the preparation method therefor and various uses of the molecularsieve / fiber composite material, the problem of molecular sieve / fiber composite materials that molecular sieves are gathered on surfaces of fibers is solved for the first time, the molecular sieve / fiber composite material prepared is bran-new and has relatively high strength, elasticity restorability and dimensional stability, and thus, the composite material is firm and durable. The molecular sieve / fiber composite material provided by the invention is simple in structure, low in cost, high in stability, high in performance repeatability and high in practical efficiency and can be applied to the fields of arresting bleeding, facial beautification, deodorization, sterilization, water purification, air purification and antiradiation.
Owner:杭州沸创生命科技股份有限公司

Industrial control network experimental platform based on filed buses and control method thereof

The invention discloses an industrial control network experimental platform based on filed buses and a control method thereof, and the experimental platform comprises an experimental terminal, a remote control terminal and a communication module. The experimental terminal comprises a programmable controller which controls the field buses to transmit variable information; and the remote control terminal is used for remotely controlling the experimental terminal. The communication module comprises field bus communication units of at least two types and a field bus protocol conversion module; and the field bus protocol conversion module is arranged between the field bus communication units which are connected in series and is used for converting a data packet which can be transmitted by one bus communication unit to a data packet which can be transmitted by other bus communication units. Protocol conversion of various field buses can be realized by the field bus protocol conversion module, thus realizing data communication between two types of field buses; and information transmission among different field bus devices can be constructed in a laboratory, and students can get to know more kinds of field buses.
Owner:SHANGHAI DIANJI UNIV

Efficient motorized geotome without moisture loss

The invention provides an efficient motorized geotome without moisture loss. The efficient motorized geotome without moisture loss comprises a power source, wherein the power source is connected with a drill rod through drill rod threads; the drill rod is connected with a drill drum through drill drum threads; the drill drum is internally provided with a bulldozing screw rod, and the lower part of the drill drum is connected with a drill head through drill head threads; and the length of the drill drum is at least 30cm, and the length of the drill rod is at least 50cm. By utilizing the technical scheme of the invention, three cutting teeth are uniformly distributed on the drill head, the root parts of the cutting teeth are provided with cutter root circular arcs, thus the flexural strength of the cutting teeth is enhanced, and the service efficiency of the drill head is improved; and based on the design that the cutting face of the drill head is tangential to an inner cylindrical faceand the secondary cutting edge of the drill head is tangential to the cutter root circular arcs and is transitioned to a cutter tip structure through natural circular arcs, the one-time drilling depth of the drill head is ensured to be deeper, and the service efficiency of the drill head is improved.
Owner:HENAN AGRICULTURAL UNIVERSITY

Virtual instrument technology-based motor experimental system scheme

The invention relates to a scheme and a device, which realize the acquisition of rotation speed signals of a tested motor through a sensor, set the rotation speed signals to be in an identification range of a signal conditioning circuit, after conditioning the signals, transmit the signals into a computer through a data acquisition card, finish processing data through virtual instrument software in the computer, display digital values of a rotation speed, torque and output power obtained through analysis processing on a friendly human-computer interface of the computer and simultaneously record the digital values in corresponding files. The scheme and the device have the following advantages that: experimental conditions for direct current machine testing in the prior art are improved; the whole scheme has good repeatability and avoids personal errors; the device applying the scheme realizes the integration of experimental instruments, so that the integration cost of experimental and testing equipment is remarkably reduced and steps are remarkably reduced; and through proper extension, the scheme and the device can be widely applied to the experiment teaching of other subjects, and can realize the experiment teaching and scientific research of a network and greatly improve the practical efficiency of experimental environments.
Owner:SHANGHAI DIANJI UNIV

Method and device for recording multimedia web page

The invention discloses a device for recording a multimedia web page. The device comprises a memory sharing device, a playing and recording device and a web page device, wherein the memory sharing device is used for providing initial parameters related to playing and recording; the playing and recording device is used for binding a recording target in a multimedia file according to the initial parameters and recording the bound target in the process of playing the multimedia file; and the web page device is started by a browser based on a Windows operating system framework and used for calling the playing and recording device embedded into the web page device. The invention also discloses a corresponding multimedia recording apparatus and a corresponding method for recording the multimedia web page. The invention effectively extends supports to multimedia file formats capable of playing and recording and has low cost.
Owner:WONDERSHARE TECH CO LTD

Scissorlike enlarged head anchor drill hole inner diameter measuring device

InactiveCN105937871ASolving inner diameter measurement problemsGuaranteed accuracyMechanical diameter measurementsDrill holeGeotechnical engineering
The invention provides a scissorlike enlarged head anchor drill hole inner diameter measuring device. The scissorlike enlarged head anchor drill hole inner diameter measuring device comprise a first measuring rod (2) and a second measuring rod (3) which are symmetrically arranged at two sides of a vertical rod (1); the middle portions of the first measuring rod (2), the second measuring rod (3) and the vertical rod (1) are hinged together through a shearing shaft (4); the upper ends of the two measuring rods are connected with two ends of a telescopic rod (5) respectively; the rod body of the telescopic rod (5) is shelved with a first sleeve (6); the first sleeve (6) is connected with the upper end of the vertical rod (1); the lower end of the second measuring rod (3) is connected with one end of an extendable ruler (7); the other end of the extendable ruler (7) is inserted into a second sleeve (8); the second sleeve (8) is connected with the lower end of the first measuring rod (2); and the lower end of the vertical rod (1) is fixed to the extendable ruler (7). With the measuring device adopted, the inner diameter and depth of the enlarged head of an anchor drill hole which is unevenly expanded can be measured fast and accurately, and therefore, measuring time can be greatly saved, and measuring efficiency can be improved.
Owner:YANGTZE UNIVERSITY

Three-dimensional scene reconstruction method based on GPS information video

The invention discloses a three-dimensional scene reconstruction method based on a GPS information video. The method comprises the following steps that 1, an FOV model set based on GPS information is constructed and redundancy frame data are removed; 2, a reconstruction frame matrix is constructed; 3, a key frame is extracted; 4, a target scene is reconstructed in a three-dimensional mode. According to the three-dimensional scene reconstruction method based on the GPS information video, the video key frame can be rapidly and accurately extracted, and therefore the precision and efficiency of the three-dimensional scene reconstruction method are improved.
Owner:HEFEI UNIV OF TECH

Ground-in-hole combined detecting system based on time domain electromagnetic method and application method thereof

The invention discloses a ground-in-hole combined detecting system which comprises an electromagnetic instrument, a transmitting device, a rod-shaped receiving device, a transmitting-receiving fixingframe, a wall abutting type rotation preventer and a pushing rod. The electromagnetic instrument supports sequential intelligent starting and stoppage of single or a plurality of transmitting devicesand a plurality of receiving channels. A transmitting coil in the transmitting device is arranged on an annular frame. The upper end and the lower end of the rod-shaped receiving device are respectively provided with a pushing rod joint and a rotation preventer joint. In ground detection, the rod-shaped receiving device is arranged in the sleeve of a transmitting-receiving fixing frame. In in-holedetection, the rod-shaped receiving device is connected with the wall abutting type rotation preventer and performs in-hole movement by means of the pushing rod. An application method based on the detecting system of the invention mainly comprises ground and in-hole detection. According to a ground field source excitation characteristic, the application method can be divided into a fixed-source excitation mode, a movable-source excitation mode and a multi-source successive excitation mode, and single-hole or multiple-hole receiving. The ground-in-hole combined detecting system and the application method have advantages of reducing one-time field interference and humanistic electromagnetic interference, realizing high signal-to-noise ratio, improving detecting precision and realizing three-dimensional space detection to periphery of a drilling hole.
Owner:安徽晟北辰地质勘测设计有限公司

Automatic fire extinguishing electric routing inspection unmanned aerial vehicle

The invention discloses an automatic fire extinguishing electric routing inspection unmanned aerial vehicle. The automatic fire extinguishing electric routing inspection unmanned aerial vehicle comprises a machine body and propellers arranged at the rear end of the machine body. A dry powder storage cavity is formed in the machine body and internally stores dry powder. An open door is further formed in the belly part of the machine body and controlled by an electromagnetic valve switch to be opened and closed. A routing inspection circuit is arranged in the machine body and comprises a master control unit, an aerial photography camera and a communication device. The communication device, the aerial photography camera and the electromagnetic valve switch are in signal connection with the master control unit. The communication device comprises an onboard antenna arranged at the head of the machine body and a communication chip in signal connection with the onboard antenna. The unmanned aerial vehicle and fire disaster treatment equipment are integrated, the unmanned aerial vehicle can treat ignition points in time during routing inspection, fire disaster spreading is prevented, and the practical efficiency is improved; and the novel antenna is arranged, and the remote communication quality is better.
Owner:广州三飞航空科技有限公司

Dampproof safety box

The invention relates to a dampproof safety box which comprises a box body and a door body, wherein the door body is hinged on one side of the box body; the life and right inner side walls of the box body are respectively provided with a sliding slot; the two sliding slots are of equal height; a push-pull partition plate is also arranged in the box body; the push-pull partition plate is mounted in the two sliding slots; a drying agent is arranged in the push-pull partition plate; air holes are uniformly formed in the upper and lower surfaces of the push-pull partition plate. By adopting the technical scheme, the push-pull partition plate with air holes is arranged in the safety box, and the drying agent is added into the inner layer of the push-pull partition plate; the space of the safety box is reasonably divided, and an effect of drying the safety box is also realized so as to protect valuables and avoid damping and damage; moreover, the push-pull interlayer can be taken out for airing, thereby improving the practical efficiency of the drying agent.
Owner:DEQING KEDITE COATING MACHINERY

Module socket capable of being used for wall extension socket and extension socket

The invention discloses a module socket capable of being used for a wall extension socket and an extension socket. The module socket comprises a mains exchange module, a wall extension base module, a socket module, a charging socket module and a safe guard board. The module socket capable of being used for the wall extension socket and the extension socket is characterized in that the mains exchange module and the wall extension base module can supply a mains bridge connection to the socket module or the charging socket module, the mains exchange module and the wall extension base module are provided with an AC / DC switching circuit in a built-in mode so that touch switches on the mains exchange module, the wall extension base module, the charging socket module and the socket module can be provided with power, the number of the AC / DC switching circuit is one, or the AC / DC switching circuit is not arranged, the mains exchange module is provided with a power switch, and the power switch is in a touch mode or a button mode. The module socket capable of being used for the wall extension socket and the extension socket is flexible in combination, and capable of increasing or decreasing the number of jacks of the extension socket and the wall extension socket. Meanwhile, the wall extension socket and the extension socket can be exchanged, everything is made to be best used, repeated purchasing is avoided, and using cost is lowered.
Owner:孙煜

Rotary film packaging platform for thin film packaging machine

InactiveCN111071520AControl heat sealing temperatureAvoid differenceWrapper twisting/gatheringWrapping with article rotationThin membraneElectric machinery
The invention discloses a rotary film packaging platform for a thin film packaging machine and relates to the technical field of thin film packaging machines. The rotary film packaging platform comprises a support bottom plate. A reinforcing support is fixedly connected to the outer surface of a driving motor. Universal wheels are fixedly connected to the ends, away from the driving motor, of electric telescopic rods. A machining table plate is fixedly connected to the side, away from the support bottom plate, of the reinforcing support. A heat sealing device is fixedly connected to the middleof the top of the machining table plate. Auxiliary side frames are correspondingly and fixedly connected to the symmetrical positions, on the two sides of the heat sealing device, of the top of the machining table plate. Clamping devices are fixedly connected to the tops of the sides, close to the heat sealing device, of the auxiliary side frames. Top frames are fixedly connected to the portions,located on the two sides of the auxiliary side frames, of the top of the machining table plate. Adsorption devices are fixedly connected to the middle positions of the sides, close to the heat heating device, of the top frames. The rotary film packaging platform can adapt to the film sealing of objects with different sizes, the practical efficiency of the device is improved, meanwhile, the heat sealing temperature of a heat sealing plate is effectively controlled, and the purposes of saving energy and saving cost are achieved.
Owner:浙江瑞涛包装制品有限公司

Integrated ultrasonic longitudinal-torsion composite turning tool suitable for difficult-to-machine material

InactiveCN108746685AGood longitudinal torsion ratioSimple structureTurning toolsTool holdersAviationTransducer
The invention discloses an integrated ultrasonic longitudinal-torsion composite turning tool suitable for a difficult-to-machine material. The tool comprises a tool body, the front end of the tool body is connected with a tool head, the tool head is of a wedge-shaped structure, and the front end of the tool head is provided with a machine clamping blade. According to the tool, a screw is used forfixing the tool on a tool rest of a lathe turntable, the signal of an ultrasonic generator is input into a transducer assembly through an aviation plug, so that a certain rule of high-frequency vibration is generated, then a tool nose is driven to generate longitudinal torsion amplitude, and ultrasonic turning is realized; and the whole device is small in volume, easy to operate, disassemble or assemble is convenient, and machining precision is high compared with traditional turning, moreover, a machining procedure is reduced, the machining efficiency is improved, and meanwhile, the cost is reduced.
Owner:HENAN POLYTECHNIC UNIV

Computer data processing system and processing method and application

The invention discloses a computer data processing system, comprising a host computer, which comprises data storage device, data processor and multiple interfaces, where the storage device is stored with a main database, and the interfaces are connected with external network and processing terminals, and the data storage device also comprises an agency database, and the agency database and the main database are interconnected. And the invention also discloses a data processing method for the system and the application to computer systems in financial industry. And the invention can assist the main database to implement the required functions by the database agency technique on the condition of assuring higher safety, and has access speed uninfluenced or less influenced, and the invention is especially suitable for complex bank core system.
Owner:CHINA MERCHANTS BANK

Electric brush for treadmill motor

The invention provides an electric brush for a treadmill motor. An electric brush preparation method comprises steps that matrix powder materials and a binder solution are mixed uniformly to prepare an electric brush raw material mixture; the electric brush raw material mixture is dried and crushed to acquire electric brush raw material powder; the electric brush raw material powder is added to a pressing die to carry out pressing processing to acquire an electric brush blank; thermal curing processing on the electric brush blank is carried out to acquire a half-finished electric brush product; finished product processing on the half-finished electric brush product is carried out to acquire a finished electric brush; the matrix powder materials comprise graphite, polyphenyl ester resin, polytetrafluoroethylene and metal powder. The electric brush has advantages of proper electrical resistivity, good wear-resisting performance, good commutation performance and low spark grade and further has more important advantages of high efficiency, low noise and good product stability.
Owner:SUZHOU DONSUN CARBONWARE CO LTD

Plastic film overturning and heat-sealing platform

The invention provides a plastic film overturning and heat-sealing platform. The plastic film overturning and heat-sealing platform comprises a machine frame, an overturning device, top end heat-sealing devices, a side surface heat-sealing device and a fixed platform. The fixed platform is arranged in the middle of the machine frame through the overturning device, the side surface heat-sealing device is arranged on the machine frame, and the top end heat-sealing devices are correspondingly arranged above and below the fixed platform through lifting devices. A positioning base can be overturnedthrough the overturning device, the bottom end of an object to be film-sealed can be film-sealed by the top end heat-sealing devices, and the object to be film-sealed does not need to be taken down,the top end heat-sealing devices are used for heat-sealing after manual overturning is completed, labor is saved, and the work efficiency is improved.
Owner:TIANJIN HAIJING PLASTIC PROD

Double helix structure total heat exchanger core with reinforcing ribs

The invention discloses a double helix structure total heat exchanger core with reinforcing ribs. The double helix structure total heat exchanger core with the reinforcing ribs comprises a shell which is internally provided with a fresh air channel, an exhaust channel, a fresh air inlet, a fresh air outlet, an exhaust air inlet and an exhaust air outlet; the reinforcing ribs are arranged in the fresh air channel and the exhaust channel which are each of a helix structure, and the fresh air channel and the exhaust channel form a double helix structure; the fresh air outlet is connected with the internal end of the helix-structure fresh air channel, the exhaust air inlet is connected with the internal end of the helix-structure exhaust channel, the fresh air inlet is connected with the external end of the helix-structure fresh air channel, and the exhaust air outlet is connected with the external end of the helix-structure exhaust channel. According to the double helix structure total heat exchanger core with the reinforcing ribs, the reinforcing ribs are arranged in the helix-structure fresh air channel and the helix-structure exhaust channel, and the structural strength of the fresh air channel and the exhaust channel is enhanced; by means of the helix structures, contact time of fresh air and exhaust air is longer, and the energy exchange is more thorough.
Owner:江苏知民通风设备有限公司

Chemical water pump

The present invention provides a centrifugal chemical water pump comprising a pump body, an impeller, a motor driving the impeller. The pump body comprises a pump base, a pump cavity and a pump cover. The pump cavity is mounted on pump base, a ring protruding edge according to involute curve shape is arranged on side wall of pump cavity, the two ends of protruding edge are provided on two sides of water outlet, the side wall thickness of protruding edge changes gradually from thick to thin. The water outlet direction is identical to the tangent direction of most involute curve on side wall ofprotruding edge. The impeller in umbrella shape mounted in pump cavity comprises a lamina bracket wheel, an impeller cover, a water inlet, a water outlet. The impeller cover superposed on lamina bracket wheel, and the space forms impeller outlet, the height of water outlet can be adjusted by changing height of impeller. The pump cover is mounted on upper hull of pump cavity, the wall from inside of bottom of pump cover to inlet in center is inverse umbrella shape, and the surface combining dimension of pump cover and impeller are identical.
Owner:杨军

Mould for manufacturing rubber part provided with two flanges

The invention relates to a mould structure. In order to solve the technical problem that a mould for manufacturing a rubber part provided with two flanges is low in efficiency at present, the invention provides a mould which is reasonable in structure and easy to take out a part. The mould comprises a round upper die, a round lower die and a round middle die, wherein the upper die is matched with the middle die and the middle die is matched with the lower die through conical surfaces so that the upper die and the middle die are superimposed together and the middle die and the lower die are superimposed together; a stabilizing mail hole is formed in each of the upper die and the lower die; the upper die is connected with the lower die through stabilizing nails; a mandrel hole is formed in each of the upper die and the lower die; a mandrel penetrates through the mandrel hole of the upper die, an inner cavity of the middle die and the mandrel hole of the lower die; and a rubber part die cavity is formed among the upper die, the middle die and the lower die. The mould is characterized in that the middle die is longitudinally divided into a left part and a right part, and the left part and the right part are locked through a clamping ring after being closed up. The mould is simple in structure and low in cost, and has very high production efficiency and practical efficiency.
Owner:SHANDONG HUALI ELECTRIC MOTOR GRP

Forest fire prevention pump

The invention discloses a forest fire prevention pump. The forest fire prevention pump comprises an engine, a reduction gearbox and a high-pressure plunger pump, wherein the engine is connected with one end of the reduction gearbox; the other end of the reduction box is connected with the high-pressure plunger pump; the high-pressure plunger pump is provided with a plunger pump shaft which penetrates through a pump body; the engine is matched and connected with a sun gear inside the reduction box by a crankshaft of the engine; the sun gear is meshed with a planet gear; the planet gear is meshed with an inner gear ring; the planet gear rotates about a planet gear shaft on a planet frame; a reduction box front cover and a reduction box rear cover are arranged on the two sides of the inner gear ring. The forest fire prevention pump disclosed by the invention has the beneficial effects of solving inconvenience caused by speed reduction of a belt and speed reduction of a common multi-stage gear box by arranging reduction boxes different in structure, reducing the overall structure of the forest fire prevention pump, and being more convenient to carry and higher in practical efficiency.
Owner:JIANGSU FOMA HIGH TECH POWER MACHINERY

Building feeding device from high to low

The invention relates to the technical field of buildings, and discloses a building feeding device from high to low. The building feeding device from high to low comprises a base, a support plate, a servo motor and charging baskets. The support plate is fixedly installed at the bottom of the base, and the servo motor is fixedly installed in the middle of the rear side wall surface of the support plate; a rotating column is fixedly installed at the output end of the servo motor, and rotating rods are fixedly installed at the bottom of the rotating column; clamping rods are fixedly installed onthe front side wall surfaces of the rotating rods, and the outer walls of the clamping rods are clamped in a rectangular lifting frame; and linkage rods are fixedly installed on the right and left sides of the lifting frame. According to the building feeding device from high to low, through rotation of a power source servo motor, a plurality of groups of machines are driven to cooperate with cement slurry conveyed to a low position from a high position in a linkage mode; the use efficiency of the cement slurry is ensured while the building feeding device facilitates workers to take and fill the cement slurry, and the transfer efficiency of the cement slurry is improved; the building feeding device is simple in structure, and a plurality of groups of movements cooperate with each other; andthe building feeding device is higher in practicability and creativity.
Owner:安徽广成建设工程有限公司

Stretching expanded head anchor hole inner diameter measuring device

InactiveCN105910522ASolving inner diameter measurement problemsGuaranteed accuracyMechanical diameter measurementsEngineeringMechanical engineering
The invention provides a stretching expanded head anchor hole inner diameter measuring device, which comprises a pulling rod (1) and a pipe body (2) arranged coaxially from inside to outside, wherein the pulling rod (1) passes through the pipe body (2) along an axis direction; the bottom end of the pulling rod (1) is provided with an opening plate (4); the disc of the opening plate (4) is vertical with the pulling rod (1); the circumference of the pipe body (2) is symmetrically provided with multiple measuring rods (3); the top end of each measuring rod (3) is hinged with the bottom of the side wall of the pipe body (2); and the opening plate (4) is located between symmetrical measuring rods (3). As for a non-uniform expanding anchor hole expanded head, the device can quickly and precisely measure the inner diameter of the anchor hole expanded head, the measuring time can be greatly saved, and the measuring efficiency is improved.
Owner:YANGTZE UNIVERSITY

Reciprocating impact part of multistage protection sealing telescopic sleeve

The invention relates to the field of mining machineries, in particular to a reciprocating impact part of a multistage protection sealing telescopic sleeve. The reciprocating impact part structurally comprises a multistage protection guide shaft box body, a crankshaft, a connecting rod, a guide impact piece, guide pieces and a main reciprocating tooth. The multistage protection guide shaft box body supports the guide pieces; the guide pieces support the guide impact piece to guide the guide impact piece; the crankshaft is connected with the connecting rod; and the crankshaft drives the connecting rod driving the guide impact piece to impact in a reciprocating mode. One end or the two ends of the guide impact piece stretches / stretch out of the multistage protection guide shaft box body; and the multistage protection sealing telescopic sleeve is arranged in the position, at the stretching end of the guide impact piece, of the multistage protection guide shaft box body. The guide impact piece comprises a guide rod sealing section. The shape of the cross section of the inner diameter of the multistage protection sealing telescopic sleeve is matched with the shape of the cross section of the outer diameter of the guide rod sealing section. The guide rod sealing box body section and a box body sealing piece are matched to prevent dust, muddy water, material and the like from entering the box body. According to the structure, maintenance in site is reduced, the maintenance cost is saved, the service life of a reciprocating mining machine is greatly prolonged, and the practical efficiency of the reciprocating mining machine is greatly improved.
Owner:刘素华

Self-expanding clamp coupling

The invention relates to a self-expanding clamp coupling for motor coupling. In order to solve the technical problem that the conventional rigid mandrel-structured coupling is poor in adaptability and cannot mount a motor without a key groove on the extended shaft end due to the fixed mandrel size, the self-expanding clamp coupling comprises a tapered cylindrical base, one end of the base is provided with a flange, the circumference of the flange is provided with light holes, four expanding plates are mounted in the base, the four identical expanding plates are separated from one another and combined to form a tapered cylinder, the excircle taper of the four combined expanding plates is equal to the taper of the base, the base is connected with one of the expanding plates through a flat key, the inner circle of one of the rest of the three expanding plates is provided with a key groove, the rear ends of the expanding plates are extended out of the base and provided with screw threads, and a binding nut is screwed on the screw threads. The coupling is easy to fabricate, flexible to operate and convenient to use, the cost is low, the appearance is attractive, and the coupling is practical and highly efficient.
Owner:SHANDONG HUALI ELECTRIC MOTOR GRP

Proton-electron mixed conductor hydrogen permeable membrane and its preparation method and hydrogen permeable membrane reactor

The invention belongs to the field of gas separation engineering, and in particular relates to a proton-electron mixed conductor hydrogen permeable membrane, a preparation method thereof and a hydrogen permeable membrane reactor. Using polybenzimidazole, electronic conductor, and triglycidyl isocyanurate as raw materials, the electronic conductor is graphite or graphene, and dimethylacetamide is used as the solvent. After the raw materials and the solvent are mixed and dissolved, PBI / electronic conductor is prepared. / TGIC cross-linked composite film; then soaked in concentrated phosphoric acid or phosphate solution to obtain PBI / electronic conductor / TGIC / H 3 PO 4 Cross-linked composite membrane; then brush-coat Pt, Pd or Ag catalyst on the surface to obtain a proton-electron mixed conductor hydrogen permeable membrane. High hydrogen permeation rate, high mechanical strength, strong oxidation resistance, suitable for medium and low temperature environments, good thermal, chemical stability and oxidation resistance and other advantages; the invention also provides its preparation method with mild conditions and low cost ; The hydrogen permeable membrane can construct a high-efficiency medium and low temperature hydrogen permeable membrane reactor.
Owner:SHANDONG UNIV OF TECH

Solid barbecue charcoal and preparation method thereof

The invention relates to a fuel for burning. A solid charcoal for burning is made of bamboo sawdust, wood sawdust, or the mixture of both bamboo sawdust and wood sawdust. The sources of raw materials in the invention are wide and comprises waste of the wood sawdust and the bamboo sawdust, etc., reclaimed from the factories. The waste is effectively processed into solid core barbecue, the shape of which is the same as that of pure bamboo or solid charcoal. Since the components are pure, the charcoal has no smoke when being burned. The burning time of the charcoal is equal to that of the pure bamboo or solid charcoal. Compared with the composite charcoal, the similar products can extend the burning time for 1-1.5 hours, with small size and low cost. The components are made of natural fuels, without others. The product is with high quantity of heat, little ash and is not easy to be broken off when burning and poking the charcoal. The practicality is high. The invention has a simple technology and can control the performance of the product most effectively. The product can be comparable with the pure natural raw carbon.
Owner:崔龙珠
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