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47results about How to "Solve laying problems" patented technology

Method for designing jointless track of long and large bridge girder longitudinal butt plate type ballastless track for high-speed railway

InactiveCN102789531AFully consider longitudinal resistanceFully consider lateral stiffnessRailway tracksBridge structural detailsEngineeringSlurry
The invention relates to a method for designing a jointless track of a long and large bridge girder longitudinal butt plate type ballastless track for a high-speed railway. According to the method provided by the invention, ANSYS software is utilized to establish a latitude vertical space coupling statics model of the jointless track of the long and large bridge girder longitudinal butt plate type ballastless track for the high-speed railway, and ABAQUS software is utilized to establish a space coupling kinetic model. According to the method, the compositions of systems such as a steel rail, a fastener, track plates, a slurry placement layer, bed plates, a sliding layer, a consolidation mechanism, high-strength extruded sheets and L-shaped side check blocks, and structures such as supporting layers on a subgrade soil body and a road foundation and the action of high-speed vehicles are taken into full consideration, and friction factors of sliding layers on different bridge or friction plates, the longitudinal resistance of the fastener, the temperature difference of the bridge girder, the temperature difference of a ballastless track structure, the elastic modulus of the slurry placement layer and the like are calculated, so that the stress and deformation of the track and the bridge girder are obtained. The method provided by the invention is suitable for the design and computational check of the jointless track of the long and large bridge girder longitudinal butt plate type ballastless track for the high-speed railway, and providing service for the design calculation as well as conservation and maintenance of the high-speed railway.
Owner:BEIJING JIAOTONG UNIV

Artificial lawn and fabrication process thereof

The invention discloses an artificial lawn and a fabrication process thereof. The lawn comprises a soil basal layer, a warp knitting grid net paved above the soil basal layer, and fiber grass clusters knitted on the warp knitting grid net, wherein the warp knitting grid net is in a grid structure which is formed by interlacing warps and wefts, natural grass is inserted into grids by the warp knitting grid net, and grass roots of the natural grass are planted in the soil basal layer; the warps and the wefts are all grass silk yarn harnesses knitted and twined by fiber grass yarns, and the grass roots of the fiber grass clusters are knitted in the grass silk yarn harnesses. The process comprises the steps: producing the fiber grass yarns; arraying a plurality of fiber grass yarns side by side, then, knitting the grass yarns into a fried dough twist grass yarn harnesses, and knitting the grass yarn harnesses into the warp knitting grid net; building the soil basal layer on the ground; paving the knitted warp knitting grid net above the soil basal layer; inserting or planting the natural grass in the warp knitting grid net. The artificial lawn and the fabrication process thereof have the benefits that materials, such as base fabrics and mucilage glue, are not needed, so that the economic cost is reduced; the natural grass is planted in the grid, so that the artificial lawn and the fabrication process thereof are more real and have strong flexibility.
Owner:江蘇聯創人造草坪股ふん有限公司

Method for interconnecting wide-band wireless access-in network and optical access-in wide-band network and system therefor

The method interconnect broadband wireless access (BWA) network with optical access broadband network (OAN) through any reference point from reference point T, a, ODN, and V inside OAN. Using the disclosed method can solve issue of interconnection between network of world interaction microwave access (WiMAX) and OAN. The invention provides a developing approach for OAN operation manager to develop WiMAX network. The invention puts forward tight coupling mode and loose coupling mode. In the tight coupling mode, building WiMAX network makes the most of line resources laid by original OAN network so as to avoid additional interconnection wiring and lower cost for building WiMAX network. In the loose coupling mode, WiMAX network and OAN network are already built by two operation managers so that interconnection and intercommunication are carried out between two networks in order to share services and application resources on two networks.
Owner:崔淑坤

Intertidal belt submarine cable paving method

The invention discloses an intertidal belt submarine cable paving method which comprises the following steps: (1) at high tidal level, drawing a shallow draught flat-bottomed barge with cable to a starting position of circuit in which submarine cable is needed to be paved; (2) placing a cable guiding cage located at barge tail between seawater and beach face; (3) releasing the submarine cable to the beach face from the cable guiding cage through a guiding and twisting rack on the barge; and (4) burying the submarine cable to needed depth through a paving device. By the intertidal belt submarine cable paving method, the problem of intertidal belt submarine cable paving is solved, construction cost is greatly lowered, and submarine cable construction process is simultaneously optimized.
Owner:JIANGSU LONGYUAN OFFSHORE WIND POWER GENERATION

Engine pipe laying system

The invention provides an engine pipe laying system in the technical field of pipe laying. In the invention, an interface module is in charge of realizing data exchange between the engine pipe laying system and three-dimensional designing software; a two-dimensional expansion module of three-dimensional laying space is in charge of indicating three-dimensional laying space by a two-dimensional mode; an identification sequencing module of a pipe laying density area is in charge of identifying the density of the pipe laying area and setting a laying sequence of pipes; a non-laying area diagram generating module transforms conditions and restrictions for laying the pipes into a uniform visible non-laying area diagram and the uniform visible non-laying area diagram is represented on a two-dimensional expanded view; and each condition and restriction are transformed to a non-laying area on the view; a convex hull obstacle-avoiding calculation module is used to acquire a shortest path of obstacle avoiding in the non-laying area diagram by a convex hull method, and to generate a track of a pipe centerline. In the invention, the shortest pipe path bypassing the obstacle can be acquired, and the existing computational complexity of engine pipe laying is simplified.
Owner:SHANGHAI JIAO TONG UNIV

Low pressure pipeline mounting process used in 300m<2> sintering low temperature waste heat power generation system

The invention discloses a low pressure pipeline mounting process used in a 300m<2> sintering low temperature waste heat power generation system. The mounting process comprises the following steps of manufacturing pipes, pipe fittings as well as elbows, supports and hangers in configuration of pipeline accessories; mounting pipeline welding positions in mounting of the pipelines, middle and low pressure pipelines, drain and blow off pipes, valves, flanges, the supports and hangers; assembling welding joints, testing a pipeline system, and cleaning the pipeline system. The process can be suitable for the pipeline paving in the 300m<2> sintering machine low temperature waste heat power generation system by orderly mounting the pipelines, so the power generation efficiency is ensured, and the problem that the existing mounting process cannot meet the pipeline paving demands in the 300m<2> sintering machine low temperature waste heat power generation system.
Owner:CHINA MCC5 GROUP CORP

Adjustable laying apparatus for shallow-buried drip irrigation band

The invention belongs to the field of agricultural mechanical device, and relates to an adjustable laying apparatus for a shallow-buried drip irrigation band. The adjustable laying apparatus comprises a structure frame, depth limiting wheels, disc breaking wheels, trench digging ploughs, drip irrigation band laying devices, guide wheels, covering devices, drip irrigation guide sleeves, rolling wheels and drip irrigation suspension frames. The structure frame is provided with a suspension port, lower portions of two side of the structure frame are provided with depth limiting wheels, four groups of drip irrigation band laying devices are orderly disposed under the structure frame, each disc breaking wheel and each trench digging plough are disposed under each group of drip irrigation band laying device, each drip irrigation suspension frame is disposed behind each group of drip irrigation band laying device, a drip irrigation band on the suspension frame is connected with each guide wheel of each drip irrigation band laying device through each drip irrigation guide sleeves and each rolling wheel, each covering device is disposed behind each guide wheel, and a spring is disposed between each rolling wheel shaft and each covering device. The adjustable laying apparatus can lay four rows of drip irrigation bands at the same time, the work efficiency is high, and the buried depth and the laying width of a drip irrigation band can be adjusted.
Owner:新疆农牧区水利规划总站

Vehicle-mounted solar energy power supply system for urban rail vehicles

InactiveCN107891760AMaximize utilizationEnsure the reliability of control power consumptionBatteries circuit arrangementsRailway vehiclesElectrical batteryNew energy
The invention belongs to the technical fields of new energy power generation and energy storage and particularly relates to a vehicle-mounted solar energy power supply system for urban rail vehicles.The vehicle-mounted solar energy power supply system comprises a flexible photovoltaic module, a boost convertor and an energy storage battery box which are sequentially connected and are paved on thetop or side surface of an urban rail vehicle, wherein the energy storage battery box is taken as an auxiliary power supply system of the vehicle and is connected with an external power supply bus ofthe vehicle through a contactor; the flexible photovoltaic module is a photovoltaic film battery, five series-wound photovoltaic film batteries are paved outside each compartment, the maximum power ofeach photovoltaic film battery is 100W, the rated voltage of each photovoltaic film battery is 17.8V, and a series-wound unit with a rated voltage of 89V and the maximum power of 500W is formed through the series connection of the photovoltaic film batteries; and the series-wound units of two compartments are connected in parallel and are connected to the boost convertor with rated power of 1kW,the voltage is converted into 110V, and the series-wound units are incorporated into the energy storage battery box with a rated voltage of 110V, and power is supplied to a 110V bus by the energy storage battery box through a diode.
Owner:BEIJING JIAOTONG UNIV +1

Cable laying assisting device

The invention discloses a cable laying assisting device. One side of a transmission motor is provided with a double-headed reducer; one end of each first transmission shaft is provided with a drivinggear; one end of each second transmission shaft is provided with a driven gear that is engaged with the corresponding driving gear; one side of each second transmission shaft is provided with a lifting device; the input shaft of each screw jack is connected with the corresponding second transmission shaft through a coupling; the upper part of each screw sleeve I is provided with a screw sleeve III; the upper parts of the supporting plates is provided with a rotating device; the rotating device comprises bearing seats II, rotating shafts I, chucks, and a rotating shaft II; the bearing seats IIare fixedly mounted on the upper parts of the supporting plates respectively; the bearing seats II are internally provided with bearings respectively; the rotating shafts I are installed in bearing inner rings inside the bearing seats II respectively; one end of each rotating shaft I is fixedly connected with the corresponding chuck; and two ends of the rotating shaft II are respectively installedinside the chucks at two sides. The cable laying assisting device of the invention is of an integrated structure. With the cable laying assisting device adopted, operation can be completed by one person, so that work efficiency is high; and the lifting device adopts a linkage manner, and the lifting rate of the lifting device is uniform, and therefore, the inclination of a cable reel can be avoided.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1

Detection device for parking space on outdoor intelligent parking lot and detection method thereof

The invention discloses a detection device for the parking space on an outdoor intelligent parking lot and a detection method thereof and belongs to the technical field of electronic communication. The detection device comprises a wheel locator, a power supply module, a sensor module and a control and radio frequency module, wherein the power supply module comprises a solar cell panel, a storage battery and a voltage detection unit; the sensor module is composed of an ultrasonic sensor and a peripheral circuit thereof; and the control and radio frequency module is mainly composed of a central processing unit and a radio frequency unit. According to the invention, the wheel locator on the parking space is utilized to mount the detection device for the parking space in the wheel locator, so that the construction difficulty and workload of equipment mounting in the construction process of the outdoor intelligent parking lot are greatly reduced. A power supply part utilizes solar energy to supply power, a signal transmission part is in a wireless mode, and a wireless sensor network is utilized to transmit signals, so that the problems of equipment power supply and cable paving of the detection device for the vehicles in the outdoor intelligent parking lot can be solved.
Owner:DALIAN POLYTECHNIC UNIVERSITY

In-situ water quality purification device

The invention relates to an in-situ water quality purification device. A water quality purification and repair technology mainly targets at urban inland rivers and small and medium-sized rivers in rural areas.The in-situ waterquality purification device comprises a float bowl, an elastic permeable frame, and a permeable pile fiber filter cloth, filler (honeycomb semi-soft filler or fiber-type softfiller), an aerator pipe buckle, a weight iron chain, a positioning ring, a floating block, and a plant system, the in-situ water quality purification device mainly targets at deteriorationand eutrophication of water quality in the urban inland rivers and the small and medium-sized rivers in the rural areas to provide a treatment technology for achieving surface water quality standards. The outstanding features and significant progress of the in-situ water quality purification device are mainly that the in-situ water quality purification effect can be greatly improved; seasonal water level change is not influential; the problem of underwater aerator pipe laying can be effectively solved; the fiber pile filter cloth is used for filtering and absorbing suspended particles in water, and thetransparency of a water body is greatly improved.
Owner:SHANGHAI PANDA MACHINEGRP CO LTD

Installing process of aluminum formwork

The invention relates to an installing process of an aluminum formwork, and belongs to the technical field of building casting. The installing process comprises the following steps that A, on the first day, the periphery length of an aluminum template unit to be installed in a construction site is measured, and marking is performed; a wall post formwork is preset; the steel bar installation is performed in the wall post formwork; B, on the second day, the wall post formwork is installed; the beam plate formwork is preset; the preset beam plate formwork is dismounted; a beam bottom formwork is installed; C, on the third day, a measuring mold is installed; floor slab keels and formworks are installed; a window sill is installed; water and electric line boxes are positioned; D, on the fourth day, firstly, beam steel bars are installed; plate bottom bars are installed; water and electric pipelines are embedded; wall, post, beam plate formwork secondary re-testing regulation is performed; E, on the fifth day, plate surface steel bar installation is performed, and concrete casting is performed. By using the scheme, the formworks are preset and arranged, so that some wires distributed in a later stage can be installed before the casting; the building time of the whole building is reduced.
Owner:ZHEJIANG YIKE BUILDING TECH DEV CO LTD

Comprehensive carrier suitable for carrying tunnel equipment and facilities

The invention discloses a comprehensive carrier suitable for carrying tunnel equipment and facilities. The comprehensive carrier comprises at least one main rod arranged on the side wall or the top of a tunnel in the tunnel driving direction, each main rod comprises a rectangular outer shell and a plurality of branch bins arranged in the rectangular outer shell, clamping grooves extending in the length direction of the main rods are correspondingly formed in the outer side walls of the rectangular outer shells, and a plurality of penetrating holes arranged at intervals are formed in the bottoms of the clamping grooves. According to the comprehensive carrier suitable for carrying the tunnel equipment and facilities, the plug-and-play function of the tunnel equipment and facilities is realized, a convenient installation way is provided, sufficient power supply and network wiring are reserved, and rewiring in the later period is avoided; universal installation of various devices and subsequent increase of the devices are facilitated, pipelines can be clearly classified and carried, and replacement and maintenance are further facilitated; electromechanical equipment is convenient and fast to connect and install, the pipelines are orderly distributed, and disorder is avoided; and the main rods are convenient and quick to install and dismount, the simple and quick dismounting requirements of subsequent cable and equipment increase and decrease are met, the installation and maintenance period is shortened, and the construction and maintenance cost is reduced.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP +2

A solar pavement automatic paving device

The invention discloses a solar pavement automatic paving device, comprises a frame, wherein a planking mechanism, a screwing fixing mechanism and a returning conveyor are mounted on the lower end ofthe frame from the front to the rear, the returning conveyor and the screwing fixing mechanism are fixedly connected with each other through a connecting rod, and a workbench for working personnel tomove back and forth between the returning conveyor and the frame is also installed on the rear end of the frame; The tightening fixing mechanism and the frame are provided with a traveling wheel for the automatic paving equipment to move on the ground. The utility model has the advantages that the solar energy pavement automatic paving device can automatically pave the solar energy battery panel on the pavement and automatically fix the solar energy battery panel on the pavement, thereby effectively solving the problem of paving the solar energy battery panel highway, and further acceleratingthe development of the solar energy battery panel highway.
Owner:广东恒大路桥建设有限公司

Hole-shaped enhanced ceramic insulating electric-control composite cable

The invention discloses a hole-shaped enhanced ceramic insulating electric-control composite cable which comprises a power cable conductor enhancing hole and a ceramic insulating layer extruded outside the power cable conductor enhancing hole. A power cable conductor is arranged in the power cable conductor enhancing hole, a circle of control cable conductor enhancing holes are equidistantly formed in the ceramic insulating layer, a control cable conductor is correspondingly arranged in each control cable conductor enhancing hole, inner diameter of each cable conductor enhancing hole is equal to outer diameter of the power cable conductor, and inner diameter of each enhancing hole is larger than outer diameter of each control cable conductor. The hole-shaped enhanced ceramic insulating electric-control composite cable has the advantages of high chemical stability, oxidation resistance, acid resistance, alkali resistance, high insulating mechanical strength, extrusion resistance, convenience in laying and the like.
Owner:JIANGSU YUANFANG CABLE FACTORY

Turf module applied to high and steep slope and planting method of turf module

The invention provides a turf module applied to a high and steep slope aiming to solve the problem that turf in a traditional planting mode cannot well grow on the high and steep slope with the gradient larger than or equal to 60 degrees. A matrix module is composed of a matrix block and a pre-embedded fixing assembly, and the pre-embedded fixing assembly is composed of a traction wire, an upper magnetic ring and a lower magnetic ring. The upper magnetic ring and the lower magnetic ring are both located in the hollow part of the matrix block, the traction wire wraps the surface of the matrix block, starts from the upper magnetic ring, wraps the matrix block in all directions and converges on the lower magnetic ring, and the upper portion and the lower portion of the traction wire are fixed to the upper magnetic ring and the lower magnetic ring respectively. The magnetic rings can be adhered together according to the principle that opposite poles attract each other, so that the magnetic rings and the traction wires form a closed flat net bag structure, and the matrix block is tightly wrapped and covered; before the turf module is fixed, the upper magnetic ring and the lower magnetic ring are attached to each other, when the turf module is fixed to the high and steep slope through ecological nails, the upper magnetic ring and the lower magnetic ring are separated through blocking pieces of the ecological nails, and the blocking pieces press the lower magnetic ring to be fixed to the slope together with the ecological nails.
Owner:深圳市中鸿生态建设有限公司

Cable dome structure

The invention relates to the technical field of building structures, in particular to a cable dome structure. The cable dome structure comprises a central pressing rod, an inner ring supporting component and an outer pressing ring beam, and the central pressing rod, the inner ring supporting component and the outer pressing ring beam are coaxially arranged from inside to outside in sequence. The inner ring supporting component comprises a ring cable assembly and supporting rod assemblies. The supporting rod assemblies are formed along the ring cable assembly in a continuous connecting mode. Each supporting rod assembly comprises two side supporting rods and a middle supporting rod, wherein every two of the two side supporting rods and the middle supporting rod form a plane, the upper endsof the three supporting rods are connected to form an upper fulcrum of the supporting rod assembly, the lower ends of the two side supporting rods serve as two side fulcrums of the supporting rod assembly, the lower end of the middle supporting rod serves as a lower fulcrum of the supporting rod assembly, the side fulcrums and the lower fulcrum are connected with the ring cable assembly, the upperfulcrum is connected with the lower end of the central pressing rod through an inner ring upper oblique cable and connected with the upper end of the central pressing rod through an inner ring ridgecable, the lower fulcrum is connected with the upper end of the central pressing rod through an inner ring lower oblique cable, and the upper fulcrum and the side fulcrums are connected with the outerpressing ring beam.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE

A high-strength walkway slab for temporary roads

The invention discloses a temporary high-strength walkway plate and a special trolley, wherein angle steel covered edges (1) are arranged on edges at the periphery of the walkway plate; integral reinforcing bars (5) are arranged on walkway plate concrete (8); steel bars (9) are connected between the four corners of the inner side of the angle steel and the concrete, and are welded together with the four corners of the inner side of the angle steel; through holes (2) are formed in two ends of the walkway plate. The special trolley is characterized in that a small cross rod (13), wheels (12), a hook (16), a lock chain (15), a connection part (14), a vertical rod (18) and a secondary keel (21) are arranged on a main keel (10). The temporary high-strength walkway plate and the special trolley are simple and practical; raw materials are conveniently drawn; the temporary high-strength walkway plate can be processed and manufactured by using common materials in the construction site; a temporary road can be quickly and efficiently paved; the special trolley can be used for recycling the walkway plate, so that the resource waste and the environmental pollution are avoided. The temporary high-strength walkway plate and the special trolley are wide in range of application.
Owner:CHINA CONSTR RAILWAY INVESTMENT & CONSTR GRP CO LTD +1

Portable special optical cable electric take-up and pay-off table

ActiveCN112938662ALaying impactImpact layingControl systemElectric machine
The invention relates to a portable special optical cable electric take-up and pay-off table and belongs to the field of optical cable take-up and pay-off equipment. The portable special optical cable electric take-up and pay-off table is characterized by comprising a bottom plate, a first vertical plate assembly, a second vertical plate assembly, an adjusting structure assembly, an electric reciprocating type cable arranging device, a power structure assembly, a brake structure assembly and a control system. A brushless direct-current motor driver drives a brushless direct-current gear motor to control a optical cable reel to rotate so as to achieve cable winding or cable unwinding, a stepping driver controls a stepping motor to drive the electric reciprocating type cable arranging device to move circularly, electric transmission is adopted, the size is small, the weight is light, carrying is convenient, and the portable special optical cable electric take-up and pay-off table adapts to the severe natural environment in the field and can be flexibly carried on various vehicles. The laying and recycling of the optical cable are not influenced by the environment, the laying of the optical cable is rapid and flexible, laying and recycling can be carried out in a short time, and the problem that the laying and recycling of the optical cable are difficult due to the influence of the environment is solved.
Owner:SHANDONG INTELLIGENT OPTICAL COMM DEV

Limiting structure of insulated bus bridge

The invention discloses a limiting structure of an insulated bus bridge. The device comprises a groove body and a pressing plate, a limiting groove is fixedly connected to the bottom of an inner cavity of the groove body, clamping holes are formed in the two sides of the groove body, fixing blocks are fixedly connected to the two sides of the pressing plate, spring grooves are formed in the surfaces of the fixing blocks, reset springs are fixedly connected to the inner walls of the spring grooves, and movable plates are fixedly connected to one ends of the reset springs. A bus is placed through the limiting groove; a positioning plate at the bottom of the pressing plate fixes the upper surface of the bus; the two ends of the clamping rod fix inner cavities of the blocks; the limiting plateis arranged in the clamping holes and extends to the inner cavity of the clamping hole under the driving of the reset elastic force of the reset springs, so that the pressing plate is fixed, the effect of limiting the bus by the positioning plate and the limiting groove is achieved, and the problem that the buses tend to be disordered and inconvenience is brought to laying and overhauling of thebuses due to more arrangement of the buses in the bridge is solved.
Owner:RUGAO TIANAN ELECTRIC TECH

Ground wireless monitoring method for carrier rocket

The invention discloses a ground wireless monitoring method for a carrier rocket. The method comprises the following steps of 1, arranging 37 carrier rocket ground wireless sensors on the carrier rocket; 2, arranging 2-4 wireless repeaters on each layer of movable revolving platform; and 3, setting an ID address for each of the 37 carrier rocket ground wireless sensors in the step 1, broadcasting a synchronous time synchronization packet to the 37 carrier rocket ground wireless sensors by a wireless receiving controller, and after each carrier rocket ground wireless sensor receives the synchronous time synchronization packet, taking the time when the synchronous time synchronization packet is received as a time reference, sequentially sending sensing data and forwarding the sensing data to the wireless receiving controller by each carrier rocket ground wireless sensor through the wireless repeater. According to the method, the problems of heavy cable, difficult wiring, long test period, tedious withdrawing and the like of a wired network are effectively solved, manpower resources are reduced, the test efficiency is improved, and the traceability of a data transmission process is ensured.
Owner:BEIJING INST OF ASTRONAUTICAL SYST ENG

Intelligent cathode protection system based on LoRa spectrum spread communication

The invention discloses an intelligent cathode protection system based on LoRa spectrum spread communication and belongs to the technical field of anti-corrosion cathode protection of metal materials.The intelligent cathode protection system based on LoRa spectrum spread communication comprises a main monitoring station, a protection direct-current power supply, multiple wireless testing piles and multiple reference modules; the main monitoring station is connected with the protection direct-current power supply through a TCP / IP protocol or a Modbus protocol based on an RS485 serial port andsends a configuration adjustment instruction to the protection direct-current power supply; and the wireless testing piles are connected with the main monitoring station through LoRa wireless communication. In the intelligent cathode protection system based on LoRa spectrum spread communication, a LoRa spectrum spread wireless communication technology is adopted for the wireless testing piles andthe main monitoring station, and the problem that existing wire communication lines are difficultly laid and maintained is solved. Since actual connection lines are reduced, the pressure drop caused by line resistance is removed, and accordingly the accuracy of measurement data is improved.
Owner:无锡纽思铁科能源科技有限公司

Underwater geotextile fabric laying method

The invention relates to an underwater geotextile fabric laying method and belongs to a coastal engineering building construction technology. The underwater geotextile fabric laying method the following steps of: surveying geological geomorphology and hydrometeorology conditions; planning to determine a laying position; carrying out GPS (Global Positioning System) positioning, intelligent control, basal plane obstacle clearing, error correction, splicing and shipping of underwater geotextile fabrics, sand bag in-place placement and drum put-down; fixing an anchor position; carrying out moving spreading, bag pressing and riprapping; and dumping broken stones. By one set of laying operation method, a construction process flow and a safety quality guarantee system, the difficult problem of laying the underwater geotextile fabrics is well solved, floating drifting of the geotextile fabrics is effectively prevented and the geotextile fabrics are smoothly laid without being wrinkled. Stable construction and all-weather normal operation can be ensured in the environment with a water depth of 2 to 20m, a flow rate of 0 to 3m / s, a tidal range of less than or equal to 9m, a wind force of less than or equal to 7 grades and wave power of less than or equal to 2 grades. Moreover, the underwater geotextile fabric laying method has the characteristics of accuracy for positioning, small error, high quality, low cost and high efficiency.
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY

An extrusion method for in-situ construction of geopolymer

The invention discloses an extrusion method for on-site construction of geopolymer, wherein a lattice baffle plate is connected with a lifting system to provide power for the whole extrusion process.In order to ensure that a closed system is formed between the double-layer stirring pot and the lattice baffle, a rubber sleeve is arranged at the circular ring of the lattice baffle. The double-layerstirring pot is composed of inner and outer layers, which can rotate mutually, and the extrusion outlets are arranged at the bottom of the double-layer stirring pot respectively. In the mixing process, the internal and external extrusion outlets are dislocated to ensure the sealing of the mixing pot, and the internal and external extrusion outlets overlap each other to achieve the smooth extrusion of geopolymer. The invention solves the field layout problem caused by the geopolymer with high viscosity and poor fluidity, and has relatively important significance for the practical application of the geopolymer.
Owner:杭州固益强新材料科技有限公司 +1

Submarine cable laying protection device and installation method at the foundation of offshore wind power jacket

The invention discloses a submarine cable laying protection device at the position of an offshore wind power jacket foundation and an installation method thereof. The submarine cable laying protection device comprises a first protection sleeve pipe, a second protection sleeve pipe and a third protection sleeve pipe; the third protection sleeve pipe sleeves one end of a submarine cable; the second protection sleeve pipe is formed by a plurality of small assemblies through assembly, wherein the small assemblies are fastened through bolts; the first protection sleeve pipe and the second protection sleeve pipe are fixed on the wind power unit jacket foundation; the other end of the submarine cable penetrates the second protection sleeve pipe and the first protection sleeve pipe in turn from the bottom end of the second protection sleeve pipe to be connected into a tower bottom transformer which is arranged in an offshore wind power unit. According to the submarine cable laying protection device at the position of the offshore wind power jacket foundation and the installation method thereof, the problem of submarine cable laying of the offshore wind power station fan jacket foundation of the offshore and intertidal zone is solved, the construction period is shortened, the construction process is simplified, the construction cost is greatly reduced, and the submarine cable laying process is optimized.
Owner:龙源电力集团股份有限公司 +1

An auxiliary device for laying cables

The invention discloses a cable laying assisting device. One side of a transmission motor is provided with a double-headed reducer; one end of each first transmission shaft is provided with a drivinggear; one end of each second transmission shaft is provided with a driven gear that is engaged with the corresponding driving gear; one side of each second transmission shaft is provided with a lifting device; the input shaft of each screw jack is connected with the corresponding second transmission shaft through a coupling; the upper part of each screw sleeve I is provided with a screw sleeve III; the upper parts of the supporting plates is provided with a rotating device; the rotating device comprises bearing seats II, rotating shafts I, chucks, and a rotating shaft II; the bearing seats IIare fixedly mounted on the upper parts of the supporting plates respectively; the bearing seats II are internally provided with bearings respectively; the rotating shafts I are installed in bearing inner rings inside the bearing seats II respectively; one end of each rotating shaft I is fixedly connected with the corresponding chuck; and two ends of the rotating shaft II are respectively installedinside the chucks at two sides. The cable laying assisting device of the invention is of an integrated structure. With the cable laying assisting device adopted, operation can be completed by one person, so that work efficiency is high; and the lifting device adopts a linkage manner, and the lifting rate of the lifting device is uniform, and therefore, the inclination of a cable reel can be avoided.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1
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