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Novel steel-concrete composite bridge and construction method thereof
ActiveCN106284044ANovel materialGood mechanical performanceBridge structural detailsBridge erection/assemblySuper absorbentSurface plate
The invention relates to a steel-concrete composite bridge and a construction method thereof. The novel steel-concrete composite bridge is characterized by comprising main beams, a cast-in-situ SAP (Super Absorbent Polymer) internal curing concrete bridge panel and shear studs, wherein clustered or uniformly-distributed shear studs are arranged on the main beams; a plurality of main beams are erected in a splicing way along the transverse direction of the bridge; all the main beams are connected into a whole through an end connecting plate along the longitudinal direction of the bridge, thereby forming a multi-hole connection structure; the top surfaces of the main beams are provided with open stiffening ribs, and are coated with an epoxy resin bonding layer; an SAP is poured on the epoxy resin bonding layer to realize internal curing; a cast-in-situ SAP internal curing concrete bridge panel is formed by concrete; the shear studs, longitudinal and transverse reinforcing meshes and the open stiffening ribs are positioned in the cast-in-situ SAP internal curing concrete bridge panel. An FRP (Fiber Reinforced Polymer / Plastic) board or an upper flange steel board of a T-shaped steel beam is a template which is light, has high strength and high stress performance and does not need to be detached; SAP internal curing concrete has a weak shrinking and gradual changing effect, so that the problem of tendency to cracking when the conventional concrete bridge panel is too large and too thin is solved; the influence of floor stand construction on urban traffic is lowered remarkably.
Owner:WUHAN UNIV OF TECH
Shape memory processing biodegradating vitro fixed material for medical use and its preparation
InactiveCN1544096AImprove breathabilityLow densitySurgeryAbsorbent padsCaprolactoneMaterials science
The invention relates to a novel biologically degradable macromolecular external securing material for medical purposes, wherein the essential component of the material is polylactic acid, or can be added poly gamma-caprolactone, inorganic mineral substance (such as calcium carbonate, titanium white, talcum powder, barium sulfate, montmorillonite), silicon alky coupling agent or coloring agent. The invention also discloses its preparation process.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
Automobile wheel anti-theft anti-drift device
InactiveCN101249775AImprove gripIncreased durabilityAuxillary traction increasing equipmentElectrical and Electronics engineeringSafety coefficient
The invention provides a novel antiskid and antidrift device for automobile tires. The device, arranged on the steel ring, comprises a ground grabber which is telescopic under a certain pressure and directly contact with the ground. On the soft, wet and slippery mud or snowfield, the ground grabber is pressed into the soft ground under a certain pressure, thereby performing an excellent antiskid function. When on the hard cement road, the ground grabber is pressed back by a larger pressure and is bounced out for loss of pressure, thus guaranteeing the normal driving of the device on cement roads without damaging to each other. The device with a good antiskid and antidrift effect greatly saves the fuel when driving on snowfield, muddy or sandy roads and significantly increases the safety factor.
Owner:刘智
Cylinder diameter measurement
InactiveCN102084210ANo need to dismantleMechanical diameter measurementsMaterial analysis by optical meansEngineeringMechanical engineering
A measuring device (1) for measuring a diameter of a cylinder (17) in an engine. The measuring device (1) is characterised in that the measuring device (1) comprises a measuring rack (2), further comprising at least two rack supports (5, 6, 7), whereineach rack support (5, 6, 7) has an inner end, said inner ends being connected to each other, a rotatable measuring holder (3) adapted to rotate in a plane which is perpendicular to central axis of the cylinder, further comprising at least one measuring unit (9), wherein said measuring unit (9) is adapted to provide a measurement in said plane and substantially radially with regard to the cylinder (17), a rotation motor (4), wherein said measuring rack (2) and said rotatable measuring holder (3) are attached to each other, and said rotatable measuring holder (3) is rotatable relative to said measuring rack (2) by said rotation motor (4). A method for measuring a diameter of a cylinder (17) in an engine is also presented.
Owner:CHRIS MARINE
Disposable building formwork
InactiveCN101892739AAvoid destructionTake advantage ofForming/stuttering elementsReinforced concreteSurface layer
The invention discloses a disposable building formwork and belongs to the technical field of building construction. The disposable building formwork is characterized by comprising a base layer formed by rolling filler aggregate and a surface layer and a bottom layer of a building decorative surface matched on an upper surface and a lower surface of the base layer; the filler aggregate comprises industrial wastes and various matched additives, wherein the additives comprise water reducing agents and gelatinization materials; the surface layer is provided with uneven patterns. The disposable building formwork is made from the industrial wastes, effectively treats electronic wastes and saves a large number of resources; amoreover, the cast disposable building formwork is integrated with reinforced concrete, does not need dismantling, saves separant painting, formwork cleaning, dismantling and secondary conveying required in a common technology, reduces the casting volume of the concrete and greatly saves both labor and financial resources.
Owner:陈校兴
Foundation pit supporting structure and foundation pit supporting method
PendingCN109403350APlay a supporting roleConvenient construction workExcavationsInterior spacePre stress
The invention relates to the field of ultra-deep foundation pit supporting at underground-water-rich areas, in particular to a foundation pit supporting structure and a foundation pit supporting method. Supporting piles are arranged on the inner wall of a foundation pit; at least part of each supporting pile is buried underground; prestress anchor cables are arranged at an excavation part; water drainage wells are arranged at a soil body at the periphery of the foundation pit; each prestress anchor cable comprises a fixed end which is fixed on the inner wall of the foundation pit and an anchoring end which is deep in the soil body; the water drainage wells are arranged at positions close to the anchoring ends; and the distance between the well bottom of each water drainage well to the ground is greater than or equal to the distance between the corresponding anchoring end to the ground. According to the foundation pit supporting structure and the foundation pit supporting method, supporting of the ultra-deep foundation pit with a high underground water level is realized through the supporting structure consisting of the supporting piles, the prestress anchoring cables and the waterdrainage wells; the space in the foundation pit is not occupied by the supporting structure, so that deep foundation pit construction work for foundation pits with small areas is facilitated; besides,disassembly is not need, and later-period construction is not affected; and a later-period supporting effect is realized for the foundation pit.
Owner:SHANXI CONSTR ENG CO LTD
Intestinal double-cavity fistulization excrement transferring device
The invention discloses an intestinal double-cavity fistulization excrement transferring device. The device comprises a bent pipe, the bent pipe is made of rubber, and air bags are arranged on the outer sides of two ends of the bent pipe in a surrounding mode; the air bags are connected with inflation pipes, a one-way valve is arranged at one end of the bent pipe, and a transparent cover is arranged on the outer side wall of the corner of the bent pipe. After systematic inspection, an intestinal stoma reduction operation is not conducted vexedly, the intestinal double-cavity fistulization excrement transferring device is used for continuing inspection, and with the assistance of the bridge connection effect of the transferring device, contents of an enteric cavity at the near end of a stoma pass through the transferring device and then enter an enteric cavity at the far end of the stoma; physiological status of an intestinal tract after the stoma reduction operation is simulated, the reaction of the original far-end diseased intestinal tract under the stimulus of the intestinal contents is observed, and when it is determined that pathological factors of the original far-end intestinal tract are completely removed, and then the intestinal stoma reduction operation is conducted. The situation is avoided that a patient is also compelled to be subjected to a near-end intestinal fistulization operation due to original disease recurrence of the far-end intestinal tract after the stoma reduction operation and accordingly the body and spirit of the patient get hurt.
Owner:SICHUAN CANCER HOSPITAL
Three-dimensional regulator of display screen frame
The invention discloses a three-dimensional regulator of a display screen frame. The three-dimensional regulator comprises a dovetail groove mother board, an L-shaped dovetail groove mother board, an L-shaped dovetail groove male mother board and an H-shaped display screen frame connecting block, wherein a dovetail groove is formed on one face of the dovetail groove mother board, the dovetail groove mother board, the L-shaped dovetail groove mother board, the L-shaped dovetail groove male mother board and the H-shaped display screen frame connecting block are in sliding and fitted connection through a dovetail groove mechanism, and dovetail groove fastening screws are arranged on sides of the dovetail groove. The corresponding dovetail groove fastening screws are released to push and pull a plate matched with the dovetail groove fastening screws to slide to achieve two-dimensional large-scale moving and adjusting in the front, back, left and right directions, and the dovetail groove fastening screws are fastened after completion of adjusting. In addition, small-scale adjusting in the three-dimensional direction can be achieved through regulating screws in the three-dimensional direction, and installation can be conveniently carried out. After the regulator is installed on each display unit for splitting the display screen, each display unit can be independently pulled out and disassembled for checking or maintaining during maintenance in the future, disassembly of peripheral display screen units is not needed, and a user can conveniently use.
Owner:欧阳国傑
Method for cleaning engine
ActiveCN110630379AEasy to cleanAvoid corrosionInorganic/elemental detergent compounding agentsNon-ionic surface-active compoundsCombustion chamberExhaust gas emissions
The invention discloses a method for cleaning an engine. The method for cleaning the engine includes the following steps that S1, a sparking plug is removed from a sparking plug interface of the engine; S2, foam cleaner is sprayed from the opening of the sparking plug to an engine combustion chamber to dissolve carbon deposits; S3, cleaning waste liquid and the fallen carbon deposits are sucked out from an exhaust gas emission opening by using an air suction device; S4, the sparking plug is mounted, and the engine is started to discharge cleaning residual liquid. According to the method for cleaning the engine, the carbon deposits of a lubricating system, the combustion chamber, an exhaust pipe, and a three-way catalyst are cleaned together, only the sparking plug needs to be removed, no more other components needs to be removed, efficient and fast effects are achieved, the carbon deposits in the engine is emphatically cleaned, the cleaning efficiency is high, cleaning time is short, and the cleaning effect is good.
Owner:深圳市佛莱邦科技有限公司
Connecting mould plate for inside corner and outside corner and with adjustable angle
Owner:CHINA THIRD METALLURGICAL GRP
Composite structure pulley
The invention discloses a pulley with a composite structure, which comprises a nylon wheel body provided with a rope groove, an oil nozzle is arranged on the wheel body, and a rotating shaft and a bearing thereof movably connected to the wheel body, the inside of the wheel body and the bearing There are bushings between them, and the axial ends of the rotating shaft are respectively covered with dust-proof covers, and oil holes are arranged on the dust-proof covers. The invention can greatly increase the running speed and load of the pulley, and can prevent the direct contact between the bearing and the nylon, and the phenomenon of loosening and swimming of the bearing during operation due to the difference in expansion coefficient, thereby improving the service life of the bearing. At the same time, because the oil outlet hole is set on the dust cover, it is very convenient to clean the bearing without dismantling the whole pulley.
Owner:时兆山
Combined multifunctional steel bar cage manufacturing framework and manufacturing method
The invention belongs to the technical field of civil engineering and discloses a combined multifunctional steel bar cage manufacturing framework and manufacturing method. The combined multifunctionalsteel bar cage manufacturing framework comprises a framework body, a main rib positioning plate and bearing beams. The framework body is provided with arc moulding beds matched with a steel bar cageto be manufactured; the main rib positioning plate rolls in a matching manner or is slidably supported on the moulding beds, main rib placing grooves are distributed in the main rib positioning plate,and main ribs of the steel bar cage are matched in the main rib placing grooves; and the bearing beams are used for supporting and steadying the steel bar cage in a welding process. The combined multifunctional steel cage manufacturing framework is reasonable in design, steady in support, convenient for machining and rapid in disassembly and assembly, not only can be used in a machining shed, butalso can be used nearby a construction site and a pile site for directly hoisting the steel bar cage or steel bar framework to be directly in position.
Owner:HENAN HIGHWAY ENG GROUP
Nuclear power station steel containment vessel top head assembling bracket and assembling method
The invention discloses a nuclear power station steel containment vessel top head assembling bracket and an assembling method. The nuclear power station steel containment vessel top head assembling bracket comprises buttresses, single vertical column supports and a circular truss structure; the buttresses and the single vertical column supports are used for supporting the assembly of a first round of head plates, and each single vertical column support at least corresponds to two buttresses; the circular truss structure comprises a bracket body at least provided with two rounds of concentric circle structures, and each round of concentric circles is provided with installation vertical columns; and the circular truss structure is used for supporting the assembly of other head plates other than the first round of head plates. The structure of the nuclear power station steel containment vessel top head assembling bracket is greatly simplified compared with a traditional top head assembling bracket structure, so that the overall bracket weight is reduced, and the using cost is reduced.
Owner:SHANDONG NUCLEAR POWER EQUIP MFG
Disposable glass magnesium cement building mould plate and method for preparing same
The invention relates to a disposable glass magnesium cement building mould plate, which is characterized in that raw materials, mixed according to mass ratio, includes 13.65% of coal ash, 9.83% of sawdust, 27.29% of magnesium oxide, 21.29% of magnesium chloride, 0.82% of glass fiber cloth, 0.11% of non-woven fabric, 16.37% of reclaimed materials and 10.64% of water. The method includes using aqueous solution of magnesium oxide and magnesium chloride as a main part of slurry, adding the coal ash and sawdust of a certain quantity, using the glass fiber cloth and the non-woven fabric to form a framework with improved tensile and bending resistance, and finally extruding and curing to form the mould plate. The method is simple and convenient, the mould plate produced by the method is high in strength and low in cost, the manufacturing cost of the mould plate is one third of that of traditional bamboo moulds, and the mould plate does not need to be demounted when used in underground engineering so as to be pretty convenient in use.
Owner:刘丰 +1
Hardware-type anti-bird umbrella cover
ActiveCN105788780AAchieve anti-pollution protectionNo need to dismantleInsulatorsMetal frameworkEngineering
The invention discloses a hardware-type anti-bird umbrella cover, which comprises an upper hook, a lower hook, a metal framework and a rubber umbrella surface, wherein the upper hook is connected with the lower hook through a vertical shaft there-between; the vertical shaft is fixedly connected to the metal framework; and the rubber umbrella surface is in a form of a disc and completely coats the outside of the metal framework. Through a design of an independent protection device with an internal framework, anti-pollution protection of an insulator and related components thereof is achieved; installation is facilitated; line equipment does not need to be dismantled; construction of existing facilities is facilitated; and the hardware-type anti-bird umbrella cover is simple in structure, relatively low in cost and convenient to implement.
Owner:国网新疆电力有限公司塔城供电公司 +1
Grounding cutter of rail traffic grounding device
InactiveCN102856111ANo need to dismantleCompact structureAir-break switchesChinese charactersAcute angle
The invention discloses a grounding cutter of a rail traffic grounding device and belongs to grounding mechanisms for overhauling grounding and faulty emergency maintenance grounding of a rail traffic direct-current power supply system. A movable contact cutter is fixed on an insulating rotating shaft, a copper stranded wire is connected between the movable contact cutter and a conducting board, and the conducting board is fixed on two insulators. A fixed contact cutter is composed of a plurality of copper sheets shaped like a Chinese character 'ao' in fixed mode, the fixed contact cutter is fixed on the upper portion of a fixed contact arm which is a right-angle copper board member, and the vertical portion of the fixed contact arm is a flatly-bent acute angle. The fixed contact cutter is fixed on the other two insulators, and the fixed contact arm and the conducting board are respectively connected with a contact rail and a travelling rail of rail traffic through cables. The grounding cutter of the rail traffic grounding device has the advantages of being simple and compact in structure, large in mechanical strength, long in service life and reliable in grounding.
Owner:CHENGDU ZHONGGONG ELECTRIC ENG
A method for detecting abrasion loss of sealing element
InactiveCN110988108AReal-time monitoring of wear statusNo need to dismantleMaterial analysis by electric/magnetic meansMachine sealing rings testingThermodynamicsTrace element
The invention provides a method for detecting the abrasion loss of a sealing element. The method at least comprises the following steps of adding a tracing element to the sealing element; putting thesealing element into a machine table to be put into actual use or carrying out a bench test; extracting oil liquid of the sealing element in actual operation of a machine table or in a bench test to obtain an oil liquid sample; and detecting the concentration of the tracer element in the oil sample through oil, and calculating to obtain the wear degree of the sealing element. According to the method for detecting the abrasion loss of the sealing element, the abrasion degree of the sealing element is obtained before the sealing element is abraded and loses efficacy, and economic losses and environmental pollution caused by sealing failure of the sealing element are avoided.
Owner:GUANGZHOU MECHANICAL ENG RES INST +1
Prefabricated assembly device for rapidly increasing culvert bearing capacity and method for strengthening culvert
ActiveCN109137764AImprove bearing capacityReduce construction difficultyGround-workArchitectural engineeringCulvert
The invention discloses a prefabricated assembly device for rapidly increasing culvert bearing capacity, comprising a top plate and flanges on both sides of the top plate, the top plate is used for mounting on the top of the culvert, the flanges are used for mounting on both sides of the culvert, and the dimensions of the top plate and the flanges are prefabricated according to the dimensions of the culvert. The invention also discloses a method for strengthening a culvert by adopting the prefabricated assembly device. The invention excavates part of the culvert to cover soil, not all of it; the reinforcement position is outside the culvert, not inside; the construction difficulty is low, the construction efficiency is high, does not need to enter the narrow culvert, greatly enhances the culvert's bearing capacity; the construction process of the invention is all on the outside of the culvert, and the bad construction environment of the culvert sewer pipe is avoided. The prefabricatedassembly device of the invention is integrated with the culvert after being strengthened, and does not need to be dismantled; the invention can greatly reduce the deflection deformation of the top ofthe culvert.
Owner:EAST CHINA JIAOTONG UNIVERSITY
Roller bed type ceramic drying kiln bar scraping device
PendingCN107906951AEfficient removalNo need to dismantleFurnace typesIncrustation removal devicesKilnWire rope
The invention relates to a roller bed type ceramic drying kiln bar scraping device. The roller bed type ceramic drying kiln bar scraping device is provided with a bar scraping die, a steel wire rope and a body platform; the bar scraping die is provided with a connecting hole, sawteeth are arranged on one surface of the bar scraping die, the body platform is provided with a roller and a fixing rod,the steel wire rope is arranged on the fixing rod, one end of the steel wire rope is connected to the bar scraping die through the connecting hole, and the other end of the steel wire rope is wound on the roller; and the roller rotates to enable the steel wire rope to pull the bar scraping die to conduct bar scraping. By means of the roller bed type ceramic drying kiln bar scraping device, the efficiency for removing bar nails can be improved, and the bar nails can be thoroughly removed.
Owner:MONALISA GRP CO LTD
Power-assisted umbrella head for tent
PendingCN107916827ALow costReduce the difficulty of openingTents/canopiesDistractionAxial compression
The invention relates to a power-assisted umbrella head for a tent. The power-assisted umbrella head for the tent comprises an upper umbrella head and a lower umbrella head, wherein the lower umbrellahead can be moved axially relative to the upper umbrella head, a tent frame rod is pivotally connected to the upper umbrella head through a connecting piece, one end of a tent support rod is hinged to the connecting piece, and the other end of the tent support rod is hinged to the lower umbrella head to form a triangular support structure. The power-assisted umbrella head for the tent also comprises an independent booster assembly. The booster assembly comprises a sleeve, an elastic member and a clip member, wherein the elastic member is pre-tensioned by the clip member and enclosed in the sleeve, the sleeve is detachably and fixedly connected to the upper umbrella head, the lower umbrella head slidingly sleeves the sleeve, and the lower umbrella head is compressed axially by the elasticmember driven by the clip member. The umbrella head adopts an independent spring sleeve to independently carry the powerful booster assembly, has modularity features, can be independently assembled, integrally assembled and modularly disassembled and replaced, simplifies installation and replacement procedures, reduces difficulty, guarantees installation accuracy and can be used as a common core component; the booster assembly head assists the tent in a process of opening the tent.
Owner:福州昇立莱旅游制品有限公司
Cable crossing device for power construction
ActiveCN112186637ARealize the erectionNo assembly requiredApparatus for overhead lines/cablesSupport planeCable line
Owner:STATE GRID SHANDONG ELECTRIC POWER CO QIHE POWER SUPPLY CO
Jacking system for main bridge of large-span tied arch bridge and jacking construction method
PendingCN110424243ASimple structureReasonable designBridge erection/assemblyArch-type bridgeUltimate tensile strengthSubstructure
The invention discloses a jacking system for a main bridge of a large-span tied arch bridge and a jacking construction method. The system comprises a left main bridge jacking device and a right main bridge jacking device, wherein each arch bridge superstructure comprises a left arch bridge composite structure, a right arch bridge composite structure and multiple crossbeams, each arch bridge composite structure is a steel tube concrete tied arch and comprises a girder and an arch rib, and each main bridge jacking device is arranged under each arch bridge superstructure. The jacking constructionmethod includes the steps of firstly, jacking device installation; secondly, jacking; thirdly, jacking device disassembling; and fourthly, bridge substructure jointing. The system is reasonable in structural design, simple and convenient to construct and good in use effect, the left main bridge jacking device and the right main bridge jacking device which are arranged symmetrically are adopted for vertically jacking the bridge superstructures, vertical jacking devices and auxiliary supporting structures are adopted in the main bridge jacking devices to cooperate for jacking, multiple steel bar supporting cushion blocks are adopted to form a temporary supporting structure below a jack, the supporting strength is large, the bearing effect is good, and no dismantling is required in the laterperiod.
Owner:NO 1 ENG LIMITED OF CR20G +1
Electromigration device adopting electroconductive cement based material as anode and method for repairing decaying concrete
ActiveCN111197168AInnovative designPracticalBuilding repairsBuilding insulationsElectrically conductiveRepair material
The invention discloses an electromigration device adopting an electroconductive cement based material as an anode and a method for repairing decaying concrete. The device comprises a metal net, an electroconductive cement based material mounting trough and a function material area. The electroconductive cement based material mounting trough is of a trough-shaped structure with an opening formed in one face, and the metal net is arranged in the trough bottom and is connected with an electric conduction wire extending to the outer portion of the trough bottom. The function material area is arranged in the electroconductive cement based material mounting trough, and a hole is formed in the trough side wall. Compared with the prior art, the electromigration device adopting the electroconductive cement based material as the anode is novel in design and high in practicality; and the defect that the anode in the electromigration device is prone to being rusted and damaged can be overcome well; repeated repairing can be achieved, dismounting is not needed, meanwhile, chloridions guided out by electromigration can be cured, a new technical method can be provided for bidirectional migrationof electromigration dechlorination and electromigration guide-in repair material, and great significance is achieved in repairing decaying concrete and prolonging the service life.
Owner:SOUTHEAST UNIV
Arrangement and method to retrofit a wind turbine
InactiveCN102454556AIncrease surface areaEasy to modifyEngine manufactureFinal product manufactureAdhesiveEngineering
Owner:SIEMENS AG
Open type automatic inclined shaft rail clamping stepping device of rock tunnel boring machine
ActiveCN106285698ARealize on-orbit automatic stepping functionImprove construction safetyTunnelsTrack-braking member co-operationTunnel boring machineRock tunnel
The invention provides an open type automatic inclined shaft rail clamping stepping device of a rock tunnel boring machine. The tunnel boring machine is provided with a main tunnel boring machine (TBM) body. A bottom shield is arranged below the main TBM body. The automatic inclined shaft rail clamping stepping device comprises a sliding rail plate, a stepping oil cylinder and a rail clamping device. The sliding rail plate is arranged below the bottom shield. The rear portion of the sliding rail plate is connected with the rail clamping device through the stepping oil cylinder. The open type automatic inclined shaft rail clamping stepping device of the rock tunnel boring machine is designed based on the sliding rail type stepping mode, stepping on the flat slope section can be achieved, and meanwhile stepping requirements of large gradient (downhill) which is larger than 10 degrees can be met; the main TBM body does need to be jacked, and construction safety is high; and in addition, the rail clamping device is controlled by a hydraulic pipeline system, operation is easy, and the stability is high.
Owner:CHINA RAILWAY CONSTR HEAVY IND
Carbon fiber thermal insulation cured felt
ActiveCN108673969AImprove high temperature deformation resistanceHigh densityLayered productsCarbon compositesFiber
The invention provides a carbon fiber thermal insulation cured felt. The carbon fiber thermal insulation cured felt comprises an inner felt layer, a middle felt layer and an outer felt layer, whereinthe inner felt layer and the outer felt layer are respectively adhered to the two sides of the middle felt layer; the densities of the inner felt layer, the middle felt layer and the outer felt layerare reduced in sequence; the thicknesses of the inner felt layer, the middle felt layer and the outer felt layer are increased in sequence; the inner felt layer is filled with a carbon / carbon composite material; the middle felt layer is filled with a hard fiber hard felt. The carbon fiber thermal insulation cured felt has the advantages that the inner felt layer, the middle felt layer and the outer felt layer are compounded through resin and a carbon binder, the high temperature deformation resistance capacity of the inner felt layer can be enhanced through the adding of the carbon binder andthe improvement of the density of the inner layer thermal insulation felt, the structure is low in cost, an inner felt layer adopting a separated structure is fixed through a countersunk nut and a hard felt, in order to solve the problem of fixing of a thin carbon plate, the carbon plate is pressed into a local strengthened irregular structure, after a carbon / carbon protective plate loses effectiveness, a protective plate in the innermost layer is only required to be replaced, the structure is beneficial to the reduction of failure rate, and the service life is prolonged.
Owner:浙江星辉新材料科技有限公司
Special fixing device for air permeability flow rate disc detection of tobaccos
ActiveCN102519559AExempt from replacementNo need to dismantleTesting/calibration apparatusEngineeringMachine
The invention relates to a special fixing device for the air permeability flow rate disc detection of tobaccos. The special fixing device is characterized by comprising an upper base seat and a lower base seat which are respectively and fixedly arranged on a machine frame, wherein an upper positioning block provided with a center through hole is connected onto the upper base seat and can be upwards turned around a turning shaft pin, a lower positioning block provided with a center through hole is arranged on the lower base seat, in addition, the upper surface of the lower positioning block isprovided with a cylindrical sinking cavity, a flow rate disc to be measured can be placed between the upper positioning block and the lower positioning block, pressure measuring openings communicatedwith the center through holes of the corresponding positioning block are respectively arranged on the side walls of the upper positioning block and the lower positioning block, and the lower matchingsurface of the upper positioning block and the upper matching surface of the lower positioning block are respectively provided with sealing rings. Through the special fixing device, the air permeability flow rate disc is fixed, is tightly clamped by an elbow clamp and is sealed by rubber sealing rings, only corresponding fittings in the upper positioning block and the lower positioning block needto be replaced for different flow rate standard elements, and in addition, different-type air permeability flow rate discs of different manufacturers can be fast replaced through opening the elbow clamp and turning the upper positioning block of the flow rate disc around the turning shaft pin to be opened.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC
Concave center flat car reinforcing device
ActiveCN113799827ASolve technical problems that are prone to interferenceDoes not affect shipping operationsCargo supporting/securing componentsFastenerChassis
Owner:CRRC HARBIN VEHICLES CO LTD
Large-span tie bar arch bridge transformation method based on bridge hydraulic jacking system
ActiveCN110424245AReasonable structural designEasy to installBridge erection/assemblyBridge strengtheningArch bridgeBuilding construction
The invention discloses a large-span tie bar arch bridge transformation method based on a bridge hydraulic jacking system. A bridge to be transformed comprises a main bridge and two approach bridges.In terms of the transformation of the bridge to be transformed, the transformation method comprises the following steps of 1, carrying out bridge jacking and construction on the newly-built approach bridges, and specifically carrying out jacking construction on a to-be-jacked bridge upper structure of the bridge to be transformed and to-be-jacked approach bridge main beams 1 of the two approach bridges through the bridge hydraulic jacking system; and 2, carrying out subsequent construction. The method has the advantages of being reasonable in design, simple and convenient in construction and good in use effect; jacking for the main bridge and jacking for the two approach bridges are carried out correspondingly, structures and arrangement positions of an approach bridge jacking system and amain bridge jacking system which are adopted are specifically limited, thus being capable of conveniently and rapidly completing the jacking construction process of the large-span arch bridge, and the jacking process is safe and reliable; and in addition, while jacking is carried out on the original bridge upper structure, the two approach bridges on the front and rear portions are newly constructed so that backfilling workload can be effectively reduced, and the construction period can be shortened as well.
Owner:NO 1 ENG LIMITED OF CR20G
Cable duct firewall
InactiveCN106532617ANo need to dismantleEasy to cleanCable installations on groundWater flowEngineering
The invention provides a cable duct firewall. The cable duct firewall is manufactured from a fireproof material, and has a fireproof function; meanwhile, cable standby holes are formed in the cable duct firewall so as to facilitate later dilatation or exchange maintenance, and the cable duct firewall is not need to be dismantled; a water-flowing flood prevention tank is formed in the cable duct firewall so as to facilitate water-flowing flood prevention and washing maintenance in a cable duct; moreover, a baffle plate of the cable duct firewall is manufactured from fireproof plates capable of preventing corrosion and water, so that corrosion of the fireproof plates is avoided; a transparent upper cover of the cable duct firewall is transparent, the upper surface is antiskid, the lower surface is anti-fog and fireproof, and the bearing pressure is greater than a preset pressure value, so that potential safety hazards in the prior art are avoided.
Owner:NINGBO POWER SUPPLY COMPANY STATE GRID ZHEJIANG ELECTRIC POWER +1
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