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44 results about "Plate fracture" patented technology
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Growth plate fracture. Growth plates are located near the ends of your child's bones. If a fracture goes through a growth plate, it can result in a shorter or crooked limb.
Coal seam hard top plate fracturing weakening method
InactiveCN107476807AEffective collapseNo pollutionDisloding machinesUnderground miningFatigue damageThermal insulation
The invention discloses a coal seam hard top plate fracturing weakening method. The coal seam hard top plate fracturing weakening method comprises the following steps that firstly a fracturing hole is drilled in the top plate, then a thermal insulation casing pipe is utilized to inject liquid nitrogen into a top plate rock stratum in a pulse mode, the coupling effect of pulse fatigue damage and liquid nitrogen cold shocks can weaken the strength of the top plate rock stratum itself to a large margin, and when gasification pressure exceeds the rock stratum tensile strength, fractures are formed around the fracturing holes, and finally nitrogen is recycled. The method integrates the advantages of fatigue weakening, the cold shocks and gasification inflation, on one hand, by relying on a gas-liquid two-phase flow pressure group of which the size is gradually increased formed in a limited drilling hole space, the temperature inside the rock stratum is sharply reduced, and the generation of the thermal stress is induced, on the other hand, a pulse type injection method makes nitrogen gas-liquid two-phase flow quickly flows to the fractures, the fracture expanding velocity is increased, and finally effective collapse of the top layer rock stratum is achieved. The method is simple and convenient to construct, low in cost and wide in application range.
Owner:中国平煤神马控股集团有限公司 +2
High-geostress dam foundation excavation construction technology
ActiveCN102691299AAvoid unloading slackAvoid Backfill DeformationFoundation testingExcavationsEconomic benefitsPlate fracture
The invention discloses a high-geostress dam foundation excavation construction technology. According to the high-geostress dam foundation excavation construction technology, before the excavation of a dam foundation, a dam foundation protecting layer with slope being smaller than or equal to that of the dam foundation and thickness being 25-40 times diameter of bottom charge of a bench blast hole is reserved; and anchor bars running through the dam foundation protecting layer and the dam foundation are pre-anchored before the dam foundation protecting layer is excavated to form a foundation building surface of a designed dam foundation. By adoption of the high-geostress dam foundation excavation construction technology, uploading relaxation and backfilling deformation, even the phenomena of'crack slip', plate fracturing and local rock bursting caused by high geostress in the excavation of the dam foundation are avoided, therefore secondary excavation resulting from the uploading relaxation and the backfilling deformation of the foundation building surface of the dam foundation can be effectively avoided; and by consolidation grouting and repeated anchoring construction, the construction period and the construction cost are greatly saved and a remarkable economic benefit is obtained.
Owner:SINOHYDRO BUREAU 7 CO LTD
Two-dimensional rational extrusion oil gas transporting poly-graphic physical simulation device
The invention provides a two-dimensional rational extrusion oil gas transporting poly-graphic physical simulation device. The two-dimensional rational extrusion oil gas transporting poly-graphic physical simulation device comprises a model main body for filling a two-dimensional material model, a cover plate and a pressing plate provided with a piston, wherein the cover plate is made of transparent glass and is provided with a supporting surface for supporting the two-dimensional material model; and the two-dimensional material model is positioned between the cover plate and the pressing plate provided with the piston, and the pressing plate provided with the piston is used for extruding the two-dimensional material model on the cover plate. According to the invention, the two-dimensional material model is compacted by the piston, the situation that the graphic cover plate fractures and an instrument is damaged because of overdosage compaction of the two-dimensional material model is avoided; the problem that model filling is failed due to obvious deformation or collapse generated by insufficient compaction of the two-dimensional material model is solved; and the problem of multi-solution of a transportation conduction system due to invisible deformation or collapse generated by insufficient compaction of the two-dimensional material model is solved, therefore the authenticity of experiment phenomenon and experimental result is ensured.
Owner:PETROCHINA CO LTD
Method for producing circuit board thin plates
The invention discloses a method for producing circuit board thin plates. The technical scheme is characterized in that the method comprises the following steps that: conducting plating though holes; conducting outer layer circuit pattern transfer; conducting graph electric plating and etching; penetrating a string through locating holes of the circuit board thin plates, utilizing string beads to separate the circuit board thin plates, and plating the circuit board thin plates though the holes, after plating the circuit board thin plates through the holes, washing liquid medicine on the surfaces of the circuit board thin plates away by horizontally drawing the circuit board thin plates through a thick plate; conducting electric test; conducting routing; utilizing a plastic package tray to package a finished-product unit plate subjected to routing. From the procedure of layer circuit pattern transferring to the procedure of routing, the circuit board thin plates are compressed through pressing grooves by the adoption of a pig cage frame device to be transferred between the procedures. The method for producing the circuit board thin plate solves the problems that the circuit board thin plates are prone to plate adhesion, plate curving, plate clamping and plate fracture due to the fact that the circuit board thin plates are small in size. The method for producing circuit board thin plates is simple in process and stable in product quality.
Owner:广东依顿电子科技股份有限公司
Plate surface microstructure plowing type forming device and forming method
The invention relates to a plate surface microstructure plowing type forming device and a forming method and belongs to the field of mechanical engineering. A coining assembly is fixedly connected with the upper portion of a plowing type assembly. A pressure cylinder is assembled to a bearing plate. A piston rod of the pressure cylinder is in linkage with a roller support. A roller is connected with the roller support. The lower portion of the bearing plate is fixedly connected with a support column. A microstructure bottom mold is fixedly connected with the lower portion of the support column. A clamping jaw is connected with a support plate through a lower fixing jaw. The lower portion of the support plate is slidably connected with a set of guide rails. The guide rails are fixedly connected to a base. The middle portion of the lower portion of the support plate is fixedly combined with the guide seat. The guide seat is connected with a screw in a threaded manner. The screw is mounted on the base through a support. The end of the screw is connected with a motor. The coining assembly is fixed to the base through the microstructure bottom mold. The plate surface microstructure plowing type forming device and the forming method have the beneficial effects that the microstructure is promoted to be generated on the plate fracture surface by the adoption of a compression roller and pull plate plowing manner, the forming efficiency is improved, and the low-cost forming of the plowing type of the plate surface microstructure is achieved.
Owner:JILIN UNIV
Oriented danger removing method for high mine pressure roadway of coal mine
The invention proposes an oriented danger removing method for a high mine pressure roadway of a coal mine. According to the method, the mode that transverse (the cross section of the roadway) pressure relief and longitudinal (in the walking direction of the roadway) pressure relief are combined is adopted. A set of drill holes are arranged in the direction of the roadway at the interval of 5m, when the side pressure coefficient is larger than 1.5, a bottom plate can be extruded to move downwards after horizontal stress is decomposed on the drill holes in the side of the roadway, a bottom plate fracture area is formed through pressure relief blasting of the drill holes in the two sides so that stress transmitted from the deep portion of the base plate can be cut off, and development of a heaving floor is weakened; crushing belts are arranged in the roadway at certain intervals and have the functions of spring bodies, energy brought by the horizontal stress in the walking direction of the roadway is absorbed, and the heaving floor phenomenon of the roadway is solved fundamentally.
Owner:UNIV OF SCI & TECH BEIJING +1
Method for networked preponderant gas migration channel construction and gas flow guiding extracting
ActiveCN106948859AReduce intensityReduce stiffnessFluid removalGas removalEngineeringStress variation
The invention discloses a method for networked preponderant gas migration channel construction and gas flow guiding extracting, and the method is especially suitable for active construction of a networked crack channel inside a top plate and gas flow guiding treatment under the condition that the hard top plate directly covers a coal bed. According to the method, a crack generation hole, a crack guiding development hole, a lateral fracturing hole and a crack communicating hole are constructed in the top plate correspondingly in the interior, on the two sides of the front working face of an advance stress variation area, of a roadway. Active construction is conducted inside the hard top plate to form manual guiding cracks. Under the effect of mining-induced stress, the manual guiding cracks and mining-induced cracks are interwoven and pass through mutually to form a networked preponderant gas migration channel. Meanwhile, the manual guiding cracks are drilled to accelerate fracturing of the top plate to form a top plate fracturing separation layer crack area. Gas flows and migrates timely and efficiently along the networked crack channel and is enriched in the top plate fracturing separation layer crack area. Manual guiding crack drilling provides reference for the construction orientation of top plate gas extracting hole drilling, so that gas flow guiding treatment of the mining field is more concentrated and efficient.
Owner:CHINA UNIV OF MINING & TECH
Method for determining thickness of safety top plate in down-traversing gob by tunnel
ActiveCN103711493AReduce construction riskAvoid situations where the thickness is too smallTunnelsEngineeringPlate fracture
The invention provides a method for determining the thickness of a safety top plate in down-traversing a gob by a tunnel. The method includes the following steps that the damaged depth D of a bottom plate of the gob is calculated; the thickness s of a virgin rock protection layer is calculated; the distance R between the center of the tunnel and a vault fracture area is calculated; the thickness H of the safety top plate is determined according to the following equation: H>= D+s+(R-r), wherein r is the radius of the channel. The problems that the tunnel and a base plate fracture area of the gob are mutually affected, the tunnel collapses and a roof collapses due to the excessively small thickness of the safety top plate are solved, and therefore the construction risks of the tunnel are reduced.
Owner:CHINA SHENHUA ENERGY CO LTD +1
Perforating device for furniture plate
ActiveCN109605496ASolve the technical problem of "cracking"Ensure processing qualityStationary drilling machinesPlate fractureDrill
The invention relates to the field of furniture production equipment, in particular to a perforating device for a furniture plate. The perforating device comprises a left bed plate and a right bed plate on a rack, perforating mechanisms are arranged on the left bed plate and the right bed plate respectively, a left plate clamping mechanism is arranged on the left bed plate, and a right plate clamping mechanism is arranged on the right bed plate; the left plate clamping mechanism comprises a first translation mechanism and a movable plate clamping mechanism; the right plate clamping mechanism comprises a second translation mechanism and a fixed plate clamping mechanism; and the perforating mechanism comprises a third translation mechanism, a lifting mechanism, an axial moving mechanism andan electric drill. According to the perforating device, a plate to be processed is clamped by the left plate clamping mechanism and the right plate clamping mechanism, and the plate is bidirectionallyperforated through the perforating mechanisms on two sides of the plate, the technical problem of "plate fracture caused by perforating on one side of the plate" existed in the prior art is effectively solved, and the perforating quality is effectively improved to guarantee the product quality.
Owner:百强家居(文安县)有限公司
Coalmine Ordovician-limestone high-pressure-bearing water bottom plate fracture grouting material and preparing method thereof
InactiveCN105084835AAvoid fine grindingReduce porositySolid waste managementPortland cementHigh pressure
The invention discloses a coalmine Ordovician-limestone high-pressure-bearing water bottom plate fracture grouting material and a preparing method thereof. The grouting material is characterized by comprising, by weight, 60 parts of coal gangue powder, 25 parts to 30 parts of ordinary portland cement and 10 parts to 15 parts of clay in a mixing-grinding mode, wherein the size of particles of the coal gangue powder obtained before mixing is smaller than 45 un. According to the coalmine Ordovician-limestone high-pressure-bearing water bottom plate fracture grouting material and the preparing method, on the basis that high-pressure-bearing limestone at a specific-depth portion of a coalmine is reconstructed, coal gangue is sufficiently used for reducing the cost of the grouting material; the clay is a raw material low in price and easy to get, the requirements for the indexes of the grouting material are met while cost is saved, the waste coal gangue of the coalmine can be sufficiently used for treating an Ordovician-limestone water partition layer accordingly, the grouting treatment cost can be effectively reduced, the enterprise income can be increased, and the mine-lot ambient environment can be easily improved.
Owner:SHANDONG BODA IND & TRADE CO LTD
Prediction method for height of filling and mining water flowing fracture zone
ActiveCN104484713ASafe Production Support and GuaranteeThe calculation process is precise and specificForecastingGeomorphologyFracture zone
The invention discloses a prediction method for height of a filling and mining water flowing fracture zone, and belongs to the technical field of mine production safety. The height of a roof fracture zone is subjected to theoretical analysis and calculation with a rock mechanics theoretical method, and traditional experience prediction on the top plate fracture is lifted to theoretical prediction. Geologic overview and filling technical characteristics of different mines are fully considered, so that a calculation process of a water flowing fracture zone of a roof is more accurate and specific, thereby, making up a blank of a current theoretical calculation method for the height of the filling and mining the water flowing fracture zone, and providing more support and guarantee for the mine safety production.
Owner:LIAONING TECHNICAL UNIVERSITY
Anti-inner leakage plate heat exchanger
PendingCN108692597AStreaming won't happenAvoid chemical reactionsLaminated elementsStationary plate conduit assembliesPlate heat exchangerHeat flow
The invention relates to the technical field of plate heat exchangers, in particular to an anti-inner leakage plate heat exchanger. A medium entering from a hot flow inlet and a medium entering from acold flow inlet flow past in sequence on every two adjacent first plates; due to a block of a first sealing component, the media separately outflow from a hot flow outlet and a cold flow outlet; heattransfer is performed on the cold and hot media on every two adjacent first plates through heat transfer of the first plates so as to complete heat exchange; after surfaces of the first plates generate fine cracks due to the fact that the first plates are suffered from corrosion, the media leak from the cracks into foam metal layers, and the leaked media are mixed into media in heat exchange inlets and media in heat exchange outlets, that is, after the first plates fracture, a cross-flow phenomenon cannot occur on the two media exchanging heat mutually, and therefore, the explosion phenomenoncaused by the fact that the two media exchanging the heat are mixed is avoided; and meanwhile, heat exchange is performed through two layers of the first plates and media flowing in the heat exchangeinlet and the heat exchange outlet, further improving heat exchange performance. The condition of the adverse action can be easily caused after inner leakage occurs on a traditional plate heat exchanger is solved.
Owner:WEYEE HEAT EXCHANGER CO LTD
Winding type high-voltage battery
InactiveCN106486704AAvoid fragmentsAvoid falling powderFinal product manufactureSecondary cellsHigh voltage batteryEngineering
The invention discloses a winding type high-voltage battery, which comprises winding plates, electrode plates, diaphragms and winding cores, wherein the winding type high-voltage battery is an overlapping combination of two winding cores; each winding core comprises one winding plate and one electrode plate; the two ends of each electrode plate are in a reverse vortex shape and respectively cover the outer peripheries of the two winding plates; the diaphragms cover the outer walls of the electrode plates. A two-end reverse winding method is used; the two winding cores are jointly made into one winding core, so that the electrode plate fracture or powder falling can be avoided; the defect of overlapping winding is overcome; the goal of increasing the electrode plate length is achieved; the high capacity of the battery is realized.
Owner:NANTONG NINGYUAN AUTOMATION TECH
Full-automatic plate overturning machine
InactiveCN106185752ANot easy to hurtThe purpose of not easy to turn over and carryLifting devicesHoisting equipmentsEngineeringPlate fracture
The invention relates to the field of stone machinery, and discloses a full-automatic plate overturning machine. The full-automatic plate overturning machine comprises a chassis, an overturning frame, a plate overturning oil cylinder, a plate sucking module and a swing arm module; one end of the overturning frame is hinged with the chassis; one end of the plate overturning oil cylinder is hinged with the chassis, and the other end of the plate overturning oil cylinder is hinged with the overturning frame; the plate sucking module includes a sucker and a vacuum pump; the vacuum pump is communicated with the sucker; the swing arm module includes a connecting pipe, a swing plate and a swing arm oil cylinder; two ends of the connecting pipe are both fixedly connected with the middle part of the swing plate; one end of the swing plate is rotationally connected with the chassis; the other end of the swing plate is hinged with one end of the swing arm oil cylinder; the other end of the swing arm oil cylinder is hinged with the chassis; and the swing arm oil cylinder works to drive the swing plate to rotate around the axle of the connecting pipe. The full-automatic plate overturning machine is not easy to generate the stone plate fracture or damage phenomenon, can shift out the chassis from a transition table after total recovery of the plate overturning oil cylinder and the swing arm oil cylinder without waiting moving-away of stone plates so as to save the time and to improve the production efficiency, and is full-automatic and free of potential safety hazards in the whole process.
Owner:江钦能
Organic electroluminescent device and preparation method thereof, and flexible display device
ActiveCN109309171AExtended service lifeReduce external impactSolid-state devicesSemiconductor/solid-state device manufacturingDisplay deviceEngineering
The invention provides an organic electroluminescent device and a preparation method thereof, and a flexible display device. The organic electroluminescent device includes a flexible substrate, an OLED display device arranged on the flexible substrate, an encapsulated layer covering the OLED display device, a bonding layer bonding on the face, away from the flexible substrate, of the encapsulatedlayer, a cover plate bonding on the face, away from the flexible substrate, of the bonding layer, and a fibrous layer arranged between the bonding layer and the cover plate; the face, facing to the cover plate, of the bonding layer has a first patterned structure; the face, facing to the bonding layer, of the cover plate has a second patterned structure fitting with the first patterned structure;and at least partial areas of the fibrous layer is fitted between the first patterned structure and the second patterned structure. Thus, the shedding of the cover plate and the encapsulated layer after the flexible display device is bended for many times can be solved, even the adverse phenomenon of cover plate fracture, and the service life of the flexible display device can be prolonged.
Owner:GUANGZHOU GOVISIONOX TECH CO LTD
Protection strengthening type wing-shaped fixture
InactiveCN103746313AEffective protectionAvoid falling accidentsApparatus for overhead lines/cablesEngineeringPlate fracture
The invention discloses a protection strengthening type wing-shaped fixture comprising a front clamp, a rear clamp, insulation pull plates on the two sides and protection ropes, wherein the protective insulation protection ropes parallel to the insulation pull plates and wire tightening screws are arranged on the two sides of the front clamp and the rear clamp of the fixture, one ends of the insulation protection ropes are arranged on the front clamp, the other ends are connected with the wire tightening screws, the wire tightening screws are connected to the rear clamp, and the screw length of the wire tightening screws is greater than that of wire tightening screws used for fixing the insulation pull plates. As the protection ropes parallel to the insulation pull plates are arranged on the two sides of the front clamp and the rear clamp of the fixture, a protection plate on the same side can still be stressed to play an effective protection role when one pull plate or pin is broken. Therefore, the occurrence of insulator string or wire falling-off accidents caused by pull plate fracture or tripping can be avoided.
Owner:STATE GRID CORP OF CHINA +2
Inverted-arch interlocked girder and construction method thereof
InactiveCN103244150AGuaranteed stabilityIncrease contact areaUnderground chambersTunnel liningInsertion stentStructural engineering
Owner:HUNAN UNIV OF SCI & TECH
Intervertebral space opening device and use method
PendingCN106725663AThere will be no narrow front and wide rearPrevent looseningSurgerySpinal cageIntervertebral spaces
The invention discloses an intervertebral space opening device and a use method. The device is used for opening an intervertebral space in operations such as lumbar vertebra posterior-path spondylolisthesis reduction and bone graft fusion internal fixation. According to the scheme, the intervertebral space opening device comprises an intervertebral insertion and an opening clamp, the intervertebral insertion comprises an insertion body, a support part and a connector, and the opening clamp comprises a clamp head and a clamp handle; the support part is arranged at the rear end of the insertion body, the connector is arranged on the support part and used for being connected with the clamp head of the opening clamp, and the clamp head is provided with a groove matched with the connector. The intervertebral space opening device can easily and effectively open the intervertebral space, the inner width and the outer width of the opened space are similar, the phenomenon that the opened intervertebral space is narrow in front and wide in back can not occur, the problem that when an interbody fusion cage or a test mold is forcibly placed, end-plate fracture, interbody fusion cage collapse and the like occur is avoided, the operation process is accelerated conveniently for the operation, the operation time is shortened, the operation safety is improved, the success rate is increased, and then pain of patients is relieved.
Owner:SHANDONG PROVINCIAL HOSPITAL
Two-dimensional quantitative extrusion oil and gas migration and accumulation visual physical simulation device
Owner:PETROCHINA CO LTD
Medical polymer plate bending method
ActiveCN108127898AEven by forceUniform heating avoids uneven heating of the bending line caused by fixed heatingReciprocating motionEngineering
The invention relates to the technical field of plate machining, and discloses a medical polymer plate bending method. The method comprises the steps that 1, a plate is placed on a workbench and limited by a limiting wheel, a first air cylinder is started to push a pressing plate to press the plate, and the plate distance to be bent is measured through a graduated scale till the bending line of the plate distance to be bent is aligned to a heater; 2, a power device is used for driving the heater to do reciprocating motion, and the heater is started to adjust the temperature of the heater to be100-150 DEG C for heating the plate; 3, after the heater heats the plate for 10-30 min, a positioning rod pointing angle ruler is used for positioning the bending angle, and a second air cylinder isstarted to push the plate to be bent; and 4, when a piston rod of the second air cylinder is flush with the plate, bending is finished, and the first air cylinder is reset to take out the plate. Platebending and heating are convenient, and plate fractures are reduced.
Owner:CHONGQING DICO MECHANICAL & ELECTRICAL EQUIP
Plate opening device for curled plate
InactiveCN109290455AEasy to fixEasy to heat and softenShaping toolsMetal-working feeding devicesElectric machineryEngineering
The invention discloses a plate opening device for a curled plate. The plate opening device comprises a base, a supporting rod is fixedly connected to the upper part of one side of the base, a first servo motor is installed on one side the lower part of the supporting rod, and fixedly connected with the base, and one side of the first servo motor is connected with a first driving wheel in a transmission mode through a first motor shaft. According to the plate opening device for the curled plate, through arrangement of a fixture, the curled plate can be fixed conveniently; through arrangement of a heating furnace, the curled plate can be heated and softened conveniently in advance, and thus the plasticity of the curled plate is achieved; through arrangement of a rolling plate, the curled plate can be moved to the position between the rolling plate through the fixture, the curled plate is rolled through a hydraulic rod driving the rolling plate to keep the curled plate flat, plate opening of the curled plate is achieved, according to design, the conditions that damage to people caused by tools in the traditional manual plate opening process and plate fracture due to unsoftened platesin the traditional plate opening process are avoided.
Owner:戴宁哲
Cylindrical lithium ion battery
ActiveCN104103850AImprove securityAvoid breakingFinal product manufactureSecondary cellsEngineeringPole piece
The invention discloses a cylindrical lithium ion battery, which comprises an electric core, a positive plate, a negative plate, a positive pole column and a negative pole column, the electric core is prepared by coiling a positive pole piece, a diaphragm and a negative pole piece, one end of the electric core is provided with a positive pole ear, the other end of the electric core is provided with a negative pole ear, the positive plate is stamped with a first clamping groove, a positive plate side face back to the first clamping groove is closely attached to the end face of the positive pole ear, and welded and fixed by the first clamping groove; the negative plate is stamped with a second clamping groove, the negative plate side face back to the second clamping groove is closely attached to the end face of the negative pole ear, and welded and fixed by the second clamping groove. Because of adopting of the structure of the cylindrical lithium ion battery, pole ears can be partially pressed and easily pressed, the cylindrical lithium ion battery is easy to realize the electric connection through laser welding, and prevents the pseudo soldering, unsoldering and other phenomena; and the groove structure can also strengthen the pole plates, prevents pole plate fracture caused by longitudinal pressure on the cylindrical lithium ion battery, and helps to improve the safety performance of the battery.
Owner:YINLONG ENERGY CO LTD
Arc hot press
ActiveCN109093813AAvoid breakingAvoid deformationWood treatment detailsThermal wood treatmentPulp and paper industryPlate fracture
The invention relates to the field of furniture processing and discloses an arc hot press. The arc hot press comprises a press base, an upper die and a lower die. A first movable groove is formed in the lower die, a second air cylinder is mounted in the first movable groove, and the output end of the second air cylinder is connected with a convex plate; first channels used for delivering steam andsecond channels used for pumping air out are formed in the two sides of the lower die correspondingly; a second movable groove is formed in the upper die, and a concave plate is slidably connected into the second movable groove; second communicating openings are formed in the two sides of the concave plate correspondingly, and an inwards-sunken part matched with a protruding part and horizontal parts used for closely abutting against the two sides of a wood plate are arranged at the bottom of the concave plate; and third channels used for delivering the steam are formed in the two sides of the upper die. According to the arc hot press, steam softening, pressing, shape fixing and drying of the wood plate are integrated, so that the pressing efficiency of the arc wood plate is improved greatly, the wood plate can be subjected to uniform steam softening and dried, wood plate fracturing or deforming caused by nonuniform softening or nonuniform drying of the wood plate is avoided, and thepressing effect of the arc wood plate is enhanced greatly.
Owner:贵州鑫大福门业有限公司
Chain scission and scraper plate fracture electronic alarming device for cleaning mechanism of coal feeder
InactiveCN102502209AImprove reliabilityAvoid downtimeControl devices for conveyorsChain scissionPlate fracture
The invention relates to a chain scission and scraper plate fracture electronic alarming device for a cleaning mechanism of a coal feeder. Two proximity switches which are arranged in parallel are arranged on the two sides of a cleaning chain respectively and are used for receiving a pulse motion signal of a cleaning scraper plate and transmitting the pulse motion signal to a control circuit; and the control circuit is used for outputting an alarming signal. The working conditions of the chain and the scraper plate of the cleaning mechanism of the coal feeder can be dynamically detected on line, so that a user can be timely reminded to overhaul the cleaning mechanism in time once abnormal conditions occur; therefore, accidental shutdown is prevented, improvement on the integral reliability of the coal feeder is facilitated, and the probability and the time of the accidental shutdown can be effectively reduced.
Owner:SHANGHAI POWER EQUIP RES INST +1
A method for directional danger relief in roadways with strong pressure in coal mines
Owner:UNIV OF SCI & TECH BEIJING +1
Online monitoring device for steel rail joint clamping plate fracture and monitoring method thereof
InactiveCN109849964AFracture Determination JudgmentSimple structureRail devicesRail jointsEngineeringPlate fracture
The invention relates to an online monitoring device for steel rail joint clamping plate fracture and a monitoring method thereof, and belongs to the technical field of rail detection. The online monitoring device specifically comprises a first steel rail joint clamping plate, a second steel rail joint clamping plate, a first steel rail and a second steel rail, the first steel rail joint clampingplate and the second steel rail joint clamping plate are fixed to the first steel rail and the second steel rail through steel rail joint clamping plate bolts, insulating pads are mounted between thefirst steel rail joint clamping plate and the first steel rail, the insulating pads are mounted between the second steel rail joint clamping plate and the second steel rail, an insulating section is mounted between the first steel rail and the second steel rail, insulators are respectively arranged between the steel rail joint clamping plate bolts and the first steel rail joint clamping plate, thesecond steel rail joint clamping plate, the first steel rail and the second steel rail, and the first steel rail joint clamping plate and the second steel rail joint clamping plate are in series connection and are in series connection with a rail circuit. According to the online monitoring device for the steel rail joint clamping plate fracture, the structure is simple, connection is convenient,and whether the steel rail joint clamping plates are fractured or not can be accurately judged and monitored online in real time.
Owner:山西润泽丰科技股份有限公司
Fixation device for quadrilateral plate fractures of the acetabulum via ilioinguinal approach
InactiveUS20140257407A1High internal fixation capabilityEasy to useBone platesMedicineInguinal approach
The present invention relates to an orthopedic internal fixator, especially a fixator for quadrilateral plate fractures of the acetabulum via ilioinguinal approach, which includes a shaped fixing titanium plate, whose outer contour is arc-shaped and basically the same as the pelvic arcuate line. While the pre-bending curvature of the proximal plate for quadrilateral plate is slightly greater than that of the arcuate line, making the proximal end of the titanium plate slightly away from the arcuate line. Elliptical fixing holes are evenly arranged along the fixing titanium plate, while the 3˜5 holes on the middle part are low-profile oval shape fixing holes. The titanium plate in the quadrilateral plate presents as a tilted slope with the exterior side being higher than the interior side, whose gradient is less than that of the bone surface of a linea terminalis of pelvis by about 15 degrees. The tilted direction of the two ends of the fixing titanium plate is opposite to that of the middle part, and is presenting as inside-outside gradually increasing tilted slopes with the exterior sides being lower than the interior sides and their gradients are about 15 degrees, thus the shaped fixing titanium plate placed behind the bone surface of a linea terminalis of pelvis with two ends upwarping. The invention provides a device for the treatment of quadrilateral plate fractures of the acetabulum via ilioinguinal approach, which has strong internal fixation capability and is easy to use.
Owner:WUHAN GENERAL HOSPITAL OF GUANGZHOU MILITARY
Rolling shutter door roller and sideboard assembly thereof
InactiveCN109386225APrevent accidental fallsImprove securityDoor/window protective devicesEngineeringRolling shutter
The invention mainly relates to the technical field of rolling shutter door rollers, in particular to a rolling shutter door roller and a sideboard assembly thereof. A metal brake disc is arranged atone end of the roller, the sideboard assembly comprises a sideboard, a rotary shaft fixing base and an electronic brake device, and the electronic brake device is arranged on the upper side of the rotary shaft fixing base; a rotary shaft at the end, provided with the metal brake disc, of the roller is fixed to the rotary fixing base and can rotate. The metal brake disc is installed at one end of the roller, the electronic brake device of the sideboard assembly brakes the metal brake disc, even though, a gear set of a rolling door machine is abraded and slips or a transmission chain of a transmission bracket plate fractures, it can be avoided that a rolling shutter door falls accidentally, and safety of the rolling shutter door is improved.
Owner:漳州市龙文区永航机械设备有限公司
Sintered product bearing mechanism
The invention provides a sintered product bearing mechanism comprising bearing plates and a sintering frame. During actual production, the bearing plates are firstly fixed in a supporting frame of thesintering frame, to-be-sintered product green bodies are placed on carrying layers of the bearing plates, the temperature differences between the carrying layers and supporting layers are reduced through flame path holes formed in the bearing plates, and the situation that the bearing mechanism is damaged by stress concentration is avoided. Due to the arrangement of a plurality of reinforcing ribs, spaces capable of transmitting heat are formed between the carrying layers and the supporting layers, the temperatures inside and outside the bearing plates are kept consistent in the sintering temperature-rise process, and the situation that the bearing plates fracture since local high temperature occurs is avoided. Due to the sintered product bearing mechanism provided by the invention, internal local stress can be reduced in the sintering process, the sintering forming process is stable, the yield of sintered products is increased, and the problem that traditional bearing plates are prone to deformation and fracturing and consequently the yield of sintered products is low is solved.
Owner:湖南太子新材料科技有限公司
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