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Bridge equipment
ActiveCN106812072AAvoid damageImprove work efficiencyBridge erection/assemblyBridge strengtheningEngineeringScrew thread
Owner:江苏源清环保科技有限公司
Bleed hole stemming and method for producing the same
ActiveCN101219900AGood sintered strengthEasy to openBlast furnace componentsBlast furnace detailsPyrophylliteGraphite
The invention relates to a stemming at a taphole; the weight percentages of the components are the following: 20 to 40 of corundum, 10 to 20 of silicon carbide, 3 to 10 of silicon nitride, 10 to 23 of coke powders, 1 to 5 of graphite powders, 3 to 10 of sericite, 1 to 5 of active alumina micropowders, 5 to 15 of clay, 5 to 10 of pyrophyllite, 1 to 3 of metal powders, and +15 to 25 of water-free binder. The stemming adds a plurality of materials with plasticity and good cohesiveness to cause the stemming to easily block the hole and fill interspaces, with good binding performance of new stemming and old stemming; materials with medium and high temperature expansion are added to reduce the size of the stemming contraction at high temperature, and cracks can be avoided; materials with sintering function within different temperature areas are added, so the stemming has good sintering strength in different temperature scopes; materials with high-temperature resistance and good erosion resistance are added, and thus the stemming has high strength at high temperature, washing resistance and erosion resistance.
Owner:BAOSHAN IRON & STEEL CO LTD
Portable automatic saw blade saw
InactiveCN103210795APrevent hanging wearEasy to plug inCuttersCutting implementsStructural engineeringElectric cables
The invention discloses a portable automatic saw blade saw. The portable automatic saw blade saw comprises a saw blade and lengthening rods, and is characterized by also comprising a base frame, wherein the base frame is fixedly connected with a supporting base and a guide block respectively; a direct-current motor is fixedly connected to the supporting base; a power shaft of the direct-current motor is connected with the saw blade through a power transmission device; the power transmission device is a crank slide block mechanism; one end of a crank is fixedly connected with the power shaft of the direct-current motor; the other end of the crank is hinged with one end of a connecting rod; the other end of the connecting rod is hinged with one end of a slide block; the other end of the slide block is fixedly connected with a smooth shaft; and the smooth shaft is arranged in the guide block which is glidingly matched with the smooth shaft. When the portable automatic saw blade saw is used, the number of the lengthening rods is determined according to the trimming requirements on tree branches with different heights, a connecting pipe is fixedly connected with the lengthening rods, a control cable is plugged into a power supply, the saw blade is arranged close to the tree branch to be trimmed, a switch is turned on, the power shaft drives a power transmission device to drive the smooth shaft and the saw blade to reciprocate along the guide block to cut the tree branch, and after trimming is finished, the switch is turned off, the saw blade stops moving. The portable automatic saw blade saw has the advantages of high safety, low labor intensity and high efficiency.
Owner:JILIN SHANGNING TECH
Powder particle-high-pressure grouting crack packing gas extraction drilling and sealing device and method
ActiveCN109577908AImprove radial stabilityEasy to storeFluid removalGas removalPack materialEngineering
The invention provides a powder particle-high-pressure grouting crack packing gas extraction drilling and sealing device and method. The powder particle-high-pressure grouting crack packing gas extraction drilling and sealing device and method is applicable to underground coal mines. The powder particle-high-pressure grouting crack packing gas extraction drilling and sealing device comprises an outer bag and an inner bag, wherein the rear of the outer bag is provided with a fixing unit on a gas extraction pipe; the inner bag is provided with a screen pipe, a bag grouting pipe and a grouting pipe which penetrate through the fixing unit, the tail portions of the screen pipe, the bag grouting pipe and the grouting pipe are arranged at the rear of the outer bag, and the tail ends of the screenpipe, the bag grouting pipe and the grouting pipe are provided with valves; quick lime powder coerced by carbon dioxide is guided into the space among packing materials via the screen pipe to block fractures around a drilled hole through reaction products; cement mortar is filled in by the grouting pipe to achieve the aim of packing cracks and actively supporting the drilled hole. Therefore, thepowder particle-high-pressure grouting crack packing gas extraction drilling and sealing device can effectively reduce the influence of mining damage, prolong the effectively extraction period of drilling gas extraction, increase the concentration of extracted gas, maintain stability of the drilled hole, significantly improve the coal seam gas extracting effects and ensure safety of underground workers.
Owner:CHINA UNIV OF MINING & TECH
Use of gel material in therapeutic process of dental disease
ActiveCN103006444AShorten the timeReduce the number of referralsImpression capsDentistry preparationsDiseaseMedicine
The invention discloses a use of a gel material in a therapeutic process (a dental filling process) of a dental disease. The use is characterized in that the gel material is applied to cavity preparation in the therapeutic process of the dental disease and then used for temporarily sealing in the therapeutic process of the dental disease, wherein the gel material is selected from temperature-sensitive type hydrogel or solvent-sensitive type gel; the phase transition temperature of the temperature-sensitive type hydrogel is 25 DEG C to 36 DEG C, i.e., when the temperature is lower than the phase transition temperature, the gel material is in a liquid state, and when the temperature is higher than the phase transition temperature, the gel material is in a solid state; the solvent-sensitive gel is insoluble in water, and freely soluble in other solvents; and the solvent-sensitive gel is in the liquid state in a process of dissolving in the solvents, the solvent-sensitive gel is in the solid state after the solvents are reduced.
Owner:韩冰
Core-shell type polymer microspheres, preparation and applications thereof
ActiveCN104448087AEasy to prepareLarge volume expansionDrilling compositionChemistryVolume expansion
The present invention relates to core-shell type polymer microspheres, preparation and applications thereof. The preparation comprises: adding deionized water, an emulsifier and a dispersing agent to a reaction kettle, slowly stirring and dissolving, adding a styrene base monomer, a vinyl polymer cross-linking agent and an initiator, introducing nitrogen to replace air of the reaction kettle, heating to a temperature of 70-85 DEG C, reacting to form a core structure, adding a reaction solution containing acrylate, a styrene base monomer, a vinyl polymer cross-linking agent and an initiator in a dropwise manner, forming a shell structure on the core structure surface, cooling to a room temperature, discharging the material, and filtering to obtain the product. According to the core-shell type polymer microspheres of the present invention, the internal core structure is formed by the reaction of the styryl monomer and the vinyl polymer cross-linking agent, the shell layer of the microspheres is formed through the copolymerization of the acrylate, the styrene base monomer and the vinyl polymer cross-linking agent, and produces volume expansion under the downhole oil-gas effect so as to bond and seal the micro-crack in the cement sheath or the interface micro-gap, and the sufficient strength of the microspheres after expanding is ensured through the core portion of the microspheres.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
Panel inspection device
PendingCN107826745AImprove the efficiency of optical inspectionReduce human inputConveyor partsEngineeringTest platform
The invention relates to the technical field of panel optical inspection devices, in particular to a panel inspection device. The panel inspection device comprises a base, and is characterized in thata sheet allocating device, an automatic optical inspection device, a discharging device and a storing device are sequentially arranged in the conveying direction of a panel on the base. The sheet allocating device is used for bearing a to-be-inspected panel to be transferred to an inspection platform on the automatic inspection device. The automatic optical inspection device is used for performing optical inspection on the to-be-inspected panel on the inspection platform. The discharging device is used for transferring the panel which is identified as a finished product by the automatic optical inspection device. The storing device is used for storing the panel which is identified as an NG product by the automatic optical inspection device. The panel inspection device is reasonable in structural layout, is high in panel inspection efficiency, improves the panel inspection efficiency greatly, and has a great popularization value.
Owner:KUSN JINGXUN ELECTRONICS TECH
Temperature-resistant and salt-resistant latex blocking agent and preparation method thereof
ActiveCN105884954AImprove temperature resistanceImprove salt toleranceDrilling compositionHydrophilic monomerHigh pressure
The invention provides a temperature-resistant and salt-resistant latex blocking agent. The latex blocking agent is prepared from, by weight, 100 parts of hydrophobic monomers, 0.5-25 parts of hydrophilic monomers, 0.1-10 parts of emulgator, 0.01-5.5 parts of a buffer agent, 0.01-4.5 parts of molecular weight modifier, 0.01-6.9 parts of a protective agent, 0.01-2.3 parts of initiator and 67-172 parts of deionized water. The latex blocking agent has good blocking and water loss reduction effects and is resistant to high pressure and high temperature, and a formed mud cake is dense, thin and tough.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Foaming-free fast-curing high-strength leak-stopping waterproof polyurethane grouting material
The invention provides a foaming-free fast-curing high-strength leak-stopping waterproof polyurethane grouting material. The material is composed of a component A and a component B, wherein the component A comprises isocyanate monomer, isocyanate prepolymer and highly-hydrophobic environment-friendly plasticizer, the component B comprises high-activity polyether polyol, chain-extending cross-linking agent, highly-hydrophobic environment-friendly plasticizer and antioxidant, and a volume ratio of the component A to the component B is 1: 1. The leak-stopping waterproof polyurethane grouting material has low viscosity, is convenient to grout, has the characteristics of no foaming and fast curing and the advantages of good leak-stopping effect, high mechanical strength and wet bonding strength and excellent aging resistance, and is applicable to rapid leak stopping, water prevention and reinforcement of distress in concrete of an underground construction.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
Ergonomic multi-unit test fixture
InactiveUS6859043B2Firmly connectedEasy accessPrinted circuit testingSupport structure mountingMulti unitComputer terminal
A test fixture interfaces plural units under test (UUTs) with test equipment within a common equipment rack. The test fixture supports a plurality of vertically spaced apart shelf units. A shelf unit has a support surface and an input / output connector panel adjacent thereto, that define a UUT insertion cavity. An input / output connector panel contains cable terminations that terminate cables to various testing equipments. Insertion of a UUT into the insertion cavity places communication ports of the UUT adjacent to cable terminations of the adjacent input / output connector panel. Jumper cables interconnect communication ports of the UUT with cable terminations of the adjacent input / output connector panel.
Owner:ADTRAN
Micro-prisms array SPR biosensor component
InactiveCN101038253AReduce manufacturing costQuality improvementScattering properties measurementsBiological testingClinical testsPrism
The present invention relates to a surface plasmon resonance (SPR) biosensor, especially to a micro prism array SPR biosensor module. The objective of the present invention is to resolve problems in the technology in existence, such as that the operation course to build up a SPR biosensor is two complicated and tedious, and the technological request is too high. Said micro prism array SPR biosensor module comprises a SPR biosensor and prisms which is a micro prism array comprising at least one line prisms, wherein said micro prism array contains a base level which tother side is plated with gold film, silver film and chromium film at positions corresponding to places where the prisms locate. Said micro prism array SPR biosensor module radically simplifies the operation course to build up a SPR sensor; and improves the quality of detection signals at the same time, and is capable of performing a plurality of detections at one time. The sensor module has a low manufacturing cost, and then it is favourable to promote the application of said sensor module in clinical tests.
Owner:BEIJING GP MEDICAL TECH
Inner plugging air bag for leakage of risk source pipeline and quick plugging method thereof
The invention discloses an inner plugging air bag for leakage of a risk source pipeline and a quick plugging method thereof. The plugging device of the risk source pipeline consists of a sealing mechanism, a flow guide mechanism, a retaining mechanism and a fixing mechanism which are connected with one another. In the method, the plugging air bag, an aeration joint external aeration pump, a flow guide pipe connecting nozzle and a flow guide ball valve are used as plugging flow guide elements; and quick plugging for pipeline leakage is realized by aerating the plugging air bag by using extensibility of the rubber air bag. The inner plugging air bag has a simple structure, light weight and a good plugging effect, can be repeatedly used, is suitable for plugging the risk source pipeline of toxic gas and liquid and the like, and can also be used for inner plugging for leakage of a heat pipeline, a water supply pipeline, a chemical industry pipeline and even a large-sized pipeline.
Owner:TAIYUAN UNIV OF TECH
Fabricated ceramic tile wall surface and construction method thereof
InactiveCN109898774ATo achieve the locking effectTo achieve the purpose of directional slidingCovering/liningsKeelSurface construction
The invention discloses a fabricated ceramic tile wall surface and a construction method thereof, and relates to the technical field of building decoration. The fabricated ceramic tile wall surface comprises a main keel with the inner surface installed on a wall body and a plurality of ceramic tile templates installed outside the main keel, a plurality of bearing keels are equidistantly arranged on the main keel, and the bearing keels are arranged parallel to the ground surface; the multiple ceramic tile templates are spliced mutually and are slidably arranged between the upper bearing keel and the lower bearing keel in the length direction of the bearing keels, telescopic buckles are arranged on the side edges of the ceramic tile templates, lock holes corresponding to the telescopic buckles in a one-to-one mode are correspondingly formed in the bearing keels in the length direction, and the telescopic buckles of the ceramic tile templates are correspondingly connected to the inner parts of the lock holes in a clamped mode. The fabricated ceramic tile wall surface has the effects that the rapid installing is realized, the disassembling after the installing is convenient, the construction period is short, and the decoration efficiency and the ceramic tile wall surface construction quality are improved.
Owner:浙江屹立建设有限公司
Drilling fluid and preparation method thereof
The invention provides a drilling fluid and a preparation method thereof. The drilling fluid comprises base slurry and additives, wherein the additives include a high-softening point asphalt composition particle, a performance regulator, a stable dispersant and a stable dispersing aid, the addition amount of the high-softening point asphalt composition particle is 2% to 5% of the total mass of the drilling fluid, and the average particle size of the high-softening asphalt composition particle is 10 to 120 mm. The preparation method comprises the following steps: (1) preparing the high-softening point asphalt composition particle; and (2) adding the high-softening point asphalt composition particle into the drilling fluid and then adding proper additives like the performance regulator, a surfactant and a film-forming additive so as to allow the high-softening point asphalt particle to be uniformly and stably dispersed into the drilling fluid. The drilling fluid provided by the invention overcomes the problem that high-softening point asphalt is hard to be crushed into fine particles and has difficulty in stable dispersion in a water-based drilling fluid, and the drilling fluid can be widely used in the process of drilling operation for deep oil and gas.
Owner:CHINA PETROLEUM & CHEM CORP +1
Application of gel material in tooth extraction
The invention discloses application of a gel material in tooth extraction. The application is characterized in that the gel is applied to a tooth socket after a tooth is extracted to promote bone healing and formation of a new bone; the gel material is temperature-sensitive hydrogel or solvent-sensitive gel; the phase transition temperature of the temperature-sensitive hydrogel is in a range of 25 to 36 DEG C, namely when the temperature is lower than the phase transition temperature, the gel material is liquid, and when the temperature is higher than the phase transition temperature, the gel material is solid; and the solvent-sensitive gel means that the gel material is not dissolved in water but easily dissolved in a solvent, and the gel material is liquid when being dissolved in the solvent and solid after the solvent is reduced.
Owner:韩冰
Low softening point emulsified asphalt for drilling fluid, and preparation method thereof
InactiveCN103265816AAchieve recyclingReduce consumptionDrilling compositionBuilding insulationsSlurrySolvent
The invention discloses a low softening point emulsified asphalt for a drilling fluid, and a preparation method thereof. The emulsified asphalt comprises, by weight, 25-50 parts of an oil slurry, 10-35 parts of a solvent oil, 1-4 parts of a non-ionic surfactant, 1-4 parts of a cation surfactant, 0-4 parts of a C2-C4 alcohol, and 30-40 parts of water. The preparation method comprises: adding a solvent oil and a non-ionic surfactant to an oil slurry, carrying out heating and uniform stirring to obtain an oil slurry mixing liquid, carrying out mixing heating stirring on water, a C2-C4 alcohol and a cation surfactant until the cation surfactant is dissolved, adding the oil slurry mixing liquid, and stirring at a temperature of 45-90 DEG C to obtain the low softening point emulsified asphalt. The emulsified asphalt has the following characteristics that: the emulsified asphalt is easily dispersed in water, and has characteristics of low softening point, good anti-sloughing effect and good lubricating performance; with the emulsified asphalt, the broken stratum can be well cemented at a low temperature, hole wall cracks can be plugged, and hole wall stability can be increased; and the emulsified asphalt can be widely used in geological drilling, petroleum and natural gas well drilling, geoheat drilling and the like, oil slurry recycling is achieved, and process cost is reduced.
Owner:BEIJING INST OF EXPLORATION ENG
Steam brush with automatic water supplementing function
ActiveCN111576017AEasy to plug inImprove alignment efficiencyIroning apparatusElectric vehicle charging technologyThermodynamicsWater storage tank
The invention relates to a steam brush with an automatic water supplementing function, and relates to the technical field of steam ironing. The steam brush is inserted into a water supplementing base,and therefore synchronous water supplementing and charging are carried out. A battery and a water storage tank are arranged in the steam brush; after the steam brush is separated from the water supplementing base, the steam brush has the capacity of being independently used after being separated; and infrared geminate transistors carry out high-water-level induction on the water storage tank, andthe water supplementing degree is detected. The steam brush has the effects of being convenient to insert, high in aligning efficiency and synchronous in water supplementing and charging.
Owner:CUORI ELECTRICAL APPLIANCES GRP
Gluing device in medical apparatus mounting equipment
ActiveCN103769341AEasy to plug inPrecise and constant controlLiquid surface applicatorsCoatingsInlet channelEngineering
The invention provides a gluing device in medical apparatus mounting equipment, and belongs to the technical field of medical apparatus mounting equipment. The technical problem that the existing gluing device is low in gluing automation degree is solved. The gluing device comprises a dispensing seat, a glue injecting barrel and a glue returning barrel, the dispensing seat is provided with a cavity for providing an opening through which a target work-piece is capable of accessing; the inner side of the cavity is further provided with a glue outlet, the outer side of the dispensing seat is further provided with a glue inlet; the interior of the dispensing seat is provided with a glue inlet channel for communicating the glue outlet and the glue inlet, the bottom of the dispensing seat is provided with a glue returning channel for communicating the cavity and the external; the glue injecting barrel is communicated with the glue inlet through a first connecting pipe, and the glue returning barrel is communicated with the outlet of the glue returning channel through a second connecting pipe. The gluing device provided by the invention is provided with an opening so that the target work-piece can be conveniently inserted, the glue outlet is formed at the side of the cavity so that the adhesion amount of the glue on the target work-piece can be automatically controlled by utilizing the self-weight of the glue, and the precise and constant control can be achieved.
Owner:MAIDER MEDICAL IND EQUIP
Flowing water dispersion resistant blocking material and preparation method thereof
ActiveCN108484058AControllable clotting timeEfficient governanceProtective foundationMarine site engineeringPolyolWater soluble
The invention discloses a flowing water dispersion resistant blocking material and belongs to the technical field of preparation of injecting paste materials. The blocking material is composed of components A and B, wherein the component A comprises a hydraulic cementing material and water, and a water-binder ratio is 0.6-1 to 1; the component B comprises the following components in percentage byweight: 0.3-1.2% of water-soluble vegetable glue, 0.2-1% of polymer polyol, 0.2-1.5% of alcohol polysaccharide, 10-44% of sodium silicate and 52.3-86.3% of water. The blocking material disclosed by the invention has the advantages of being low in cost, adjustable in setting time, high in dispersion resistance, high in slurry retention rate and excellent in consolidating mechanical property, beingsafe and non-toxic, and the like. Due to tests, the slurry retention rate reaches 90% or higher within 30 minutes at water velocity of 1.5m / s, the highest slurry retention rate can reach 97%, and excellent effects are achieved.
Owner:SHANDONG UNIV
Bus duct
InactiveCN104682300AEasy to useReasonable structural designCooling bus-bar installationsTotally enclosed bus-bar installationsChinese charactersEngineering
The invention provides a bus duct, comprising a bus, mounting heads, a cover plate and side plates, wherein the cover plate comprises a bottom surface plate and side face plates, two sides of the bottom surface plate are respectively connected with the side face plates, grooves are formed in joints between the bottom surface plate and the side face plates, the top of the bottom surface plate is provided with a plurality of water grooves and water outlets for water drainage, the water grooves are communicated with the water outlets, the bottom of the bottom surface plate is provided with a raised rib for separating a phase line with a ground wire, the bottom surface plate is provided with strip-shaped holes for the mounting heads connected with the bus to pass through, each side plate is shaped like a Chinese character ao, and the bottom of the inner side of each side plate is provided with a plurality of heat radiation grooves. The bus duct is reasonable in structure design, good heat radiation of the bus duct can be ensured, inner cavity water accumulation is avoided, inserting connection is convenient, and the use is more facilitated.
Owner:JIANGSU PENGZHENG MECHANICAL & ELECTRICAL EQUIP
Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam
ActiveCN103132488AEasy constructionSmall nerf rangeBarrages/weirsEarth-fill damsReverse osmosisEngineering
The invention discloses a reverse osmosis water processing method and a reverse osmosis drainage system in a construction period of a concrete faced rockfill dam. A drainage blind material is arranged in a horizontal interface between a transition area and an upstream rockfill area, a sleeving is connected with one side, arranged on the upper stream, of the drainage blind material, the other side of the sleeving is connected with a horizontal drain pipe with a one-way water stop valve, connection threads are respectively arranged outside two ends of the horizontal drain pipe, the other side of the horizontal drain pipe is connected with a drainage hose, the other end of the drainage hose is placed in a water-collecting well, and a vertical drain pipe is further arranged. The reverse osmosis water processing method and the reverse osmosis drainage system in the construction period of the concrete faced rockfill dam are particularly applicable for reverse drainage in the construction period of the concrete faced rockfill dam, wherein the concrete faced rockfill dam is deep in foundation excavation of riverbed section toe boards, and long in upstream bedding filling construction period, and a dam body needs flood crossing and water retaining.
Owner:CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
Non-excavation sunken pipe protecting device
InactiveCN103672297AGuarantee long-term normal deliveryAvoid uneven forcePipe supportsPipe protection against damage/wearEngineeringWellbore instability
The invention relates to a non-excavation sunken pipe protecting device which can prevent the accidents that sunken pipes are squashed, crushed and partially deformed due to wellbore instability, and the process that the sunken pipes are repaired and replaced or a new pipe is rearranged is omitted. The protecting device is composed of a sunken pipe, blocking devices and a protecting pipe, wherein the sunken pipe penetrates into the protecting pipe, the length of the protecting pipe is equal to the length of the sunken pipe needing protection, the blocking devices are mounted at the two ends of the protecting pipe, the annular space between the protecting pipe and the sunken pipe is filled with fluid, and the pressure of the fluid is smaller than or equal to the pressure of media in the sunken pipe; each blocking device is composed of a slips structure or a flange structure, a Y-shaped sealing ring, a pressure gage, a fluid inlet pipe and an O-shaped sealing ring, so that the fluid in the annular space is sealed, and pressure detection and fluid supplement are achieved. The non-excavation sunken pipe protecting device is simple in structure, convenient to operate and suitable for protecting pipes which penetrate through railways, roads, buildings, soft soil sections and the like.
Owner:SOUTHWEST PETROLEUM UNIV
Busway jack box with high safety performance
ActiveCN106848965AEnsure safetyEnsure reliabilityCoupling device connectionsTotally enclosed bus-bar installationsLocking mechanismEngineering
The invention relates to a busway jack box with high safety performance. The jack box comprises a box body, wherein a jack seat, pins and a support positioning mechanism are arranged at the bottom of the box body; a locking mechanism is respectively arranged on two sides of the box body; the jack seat is fixed at the bottom of the box body through a fixed seat of the jack seat, and the pins can run through horizontal fixed grooves; a jack seat gasket is arranged at the bottom of the support positioning mechanism, and is arranged around the inner wall of the horizontal fixed groove, and is fixedly connected with the fixed seat of the jack seat through screws, so that the jack box can be jacked accurately, conveniently and quickly, and the safety and reliability of hot plugging can be ensured.
Owner:鼎圣集团有限公司
Disposable high speed turbine dental drill hand piece
InactiveCN1887236ASolve the trouble of assemblySimple structureDental toolsBoring toolsO-ringEngineering plastic
The disposable high speed turbine dental drill hand piece has one handle made of molded engineering plastic, and the handle has one integrated back part for connection to the dental drill hand piece and the other end made into tail structure suitable for connecting with water pipe and air pipe easily. The handle features its front part in inserting structure with O-ring for sealing the air pipe and water pipe union. The back part of the handle may be in different sizes for fast connection to water pipe and air pipe of different sizes. The handle may have one non-return valve installed to avoid back flow of water. The handle has light weight, high strength, easy manufacture and installation and low cost and is suitable for use in disposable high speed turbine dental drill hand piece.
Owner:BEIJING NORTH POLE DENTAL HANDPIECE
Rolling equipment for road construction
InactiveCN111395113AEasy to pushEasy to paveRoads maintainenceElectric machineArchitectural engineering
The invention relates to rolling equipment for road construction in the field of road construction equipment. The rolling equipment comprises a trolley plate and rollers. A traction ring is arranged on the trolley plate; the trolley plate is provided with second straight plates; and idler wheels are arranged at the second straight plates. An asphalt paving structure is arranged at the left end ofthe bottom of the trolley plate. A tamping structure is arranged at the right end of the asphalt paving structure and comprises a rotating motor, a crankshaft, a rotating plate, a sliding plate, a mounting plate, a first tamping plate and a second tamping plate; the crankshaft is arranged at the rotating motor and is provided with the rotating plate; and the rotating plate is provided with the sliding plate provided with a mounting plate, the first tamping plate and the second tamping plate; conical teeth are arranged on the mounting plate, a pavement humidifying structure is arranged at the right end of the tamping structure; a humidifying structure is provided with a compacting structure; the compacting structure comprises first straight plates and compression rollers, the first straightplates are symmetrically arranged at the bottom of the trolley plate, and the first straight plates are fixedly connected with the compression rollers through fixedly connected bearings. The asphaltcompactness is improved, the working efficiency is greatly improved, a problem that existing asphalt paving equipment is uneven in paving is solved, and the rolling pressure of the compression rollersis reduced.
Owner:嘉兴勤慎智能技术有限公司
Bottle stopper extraction tool
The invention discloses a bottle stopper extraction tool. The bottle stopper extraction tool is characterized in that: a pair of gear handle stamping components is matched with a motion positioning groove of a conical drill leftwards and rightwards; and two gear handles are rotationally positioned on gear handle seats on the two sides of the upper part of a hollow column respectively by using connecting pin shafts, so that the conical drill of the extraction tool drives the gear handles on the two sides during the up-and-down motion to rotate around respective rotary pin shafts, the gear handles are pressed down to rotate, and motive power can be converted into a pull force for the conical drill to move upwards. The bottle stopper extraction tool has the advantages that: the stamped hollow column is low in structure cost and easy to process; a bottle stopper is opened through the symmetrical operation of the two gear handles; and the operation is performed stably and reliably, so that the damage of the combination of the conical drill and the bottle stopper to the bottle stopper is small and the stopper is pulled out easily.
Owner:蒋萍
Efficient blocking method for shear wall through-wall bolt holes
ActiveCN107237511AGuarantee the quality of pluggingDosage controlBuilding repairsThermal bridgeEngineering
The invention particularly relates to an efficient blocking method for shear wall through-wall bolt holes. The problems, existing in current shear wall through-wall bolt hole blocking, that time and energy are wasted, mortar is wasted seriously, repairing is difficult, and leakage hidden trouble and thermal bridge phenomenon are prone to occur are solved. The efficient blocking method for the shear wall through-wall bolt holes comprises the following steps that a, bolt holes are formed after concrete pouring of a shear wall is finished; b, a wooden wedge drilling pipe is selected and installed on a percussion drill I to drill, and a PVC pipe is taken out; c, a frustum-shaped alloy bit is selected and installed on the percussion drill I, and a flare opening is formed in the external end of the bolt holes; d, glue is applied, and a prefabricated mortar block is fixed to the external end of the bolt holes; e, when grouting is conducted, interfacial agents are centrifugally sprayed on the inner wall of the bolt holes, then expansive cement mortar is sprayed on the surfaces of the interfacial agents and is extruded to the center of the front end of the bolt holes; and f, the inner end of an outer wall is padded manually until compact is achieved. According to the efficient blocking method for the shear wall through-wall bolt holes, constructing efficiency is improved, and meanwhile, occurrence of leakage hidden trouble and thermal bridge phenomenon are thoroughly avoided.
Owner:DATONG TAIRUI GRP CONSTR
High-efficiency helical water-through jackrod
InactiveCN101294481AImprove water flow capacityImprove ventilationDrilling rodsDrilling casingsWorking environmentGas passing
The invention discloses an efficient water spiral drill pipe which comprises a plurality of drill pipe units. Each drill pipe unit comprises a drill pipe core, a spiral body, a tetragonal rod, a retaining ring, a lateral pin and a spring body which supports the lateral pin for splicing-positioning and connecting two adjacent drill pipe units into one body. The spring body of each drill pipe unit is provide with a cylindrical connector which is nested and clamped in a water and gas vent at the end of the tetragonal rod of the drill pipe unit, a bending knob which is connected with the connector into one body and is clamped in the end groove of the tetragonal rod, and a flat spring which is connected with the connector into one body and is inclined in the water and gas vent of the tetragonal rod; and the tail of the flat spring bends upwards for supporting the bottom end of the lateral pin on the tetragonal rod. The drill pipe has little possibility of blockage, solves the problem that drill pipe is difficult for water and gas passing through, and effectively reduces the occurrence of hole collapse, drill pipe sticking and drill pipe losing, and improves the working environment by reducing coal dust. The drill pipe has the advantages of wide application, high drilling efficiency and reduced drilling cost.
Owner:HEBEI JIKAI IND GRP +1
Microcapsule guar gum and preparation method thereof
ActiveCN103045212AMicroencapsulationIncrease the use concentrationDrilling compositionHigh concentrationPetroleum resin
The invention provides microcapsule guar gum which comprises guar gum and C5 petroleum resin coating the guar gum. The invention further provides a preparation method of the microcapsule guar gum. According to the embodiment of the application, the guar gum is coated with the C5 petroleum resin, so that the microencapsulation of the guar gum is achieved, a use concentration of the guar gum is increased under the condition that the guarant viscosity is not increased, the microcapsule guar gum with a very high concentration can be pumped over, the gum strength of the guar gum can be improved greatly, and cracks and solution caves of strata can be blocked off well.
Owner:CHINA NAT OFFSHORE OIL CORP +1
Mobile communication terminal of plug able function module, and method
InactiveCN1960529AEasy to plug inSave resourcesRadio/inductive link selection arrangementsSubstation equipmentElectrical connectionEmbedded system
The communication terminal with plug-in functional modules comprises a body and a case. The body comprises a basic module, and the case comprises an expansion interface. There is an electrical connection between the body and the case, and the expansion interface is connected to the basic module through the electrical connection. By setting an expansion interface, the user adds the functional modules at his pleasure.
Owner:KONKA GROUP
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