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86results about How to "Reduce engineering costs" patented technology

Geological map-oriented breakpoint repairing and closed curve reconstruction method and system and medium

ActiveCN121837414AEliminate coordination costsReduce engineering costs2D-image generationEdge extractionCurve reconstruction
The invention discloses a geological map-oriented breakpoint repairing and closed curve reconstruction method and system and a medium. The method comprises the following steps of: preprocessing an original geological map to obtain a grayscale image; carrying out binarization and morphological closed operation processing to obtain a grayscale image of the edge of the smooth contour curve; performing pixel skeletonization to obtain a pixel-level skeleton diagram; performing secondary edge extraction, connected domain marking and endpoint statistics on the pixel-level skeleton diagram, and screening out a non-closed curve and an endpoint set; carrying out nearest neighbor retrieval by adopting KD-Tree to obtain a candidate pairing set of each end point; performing priority pairing in combination with the spatial distance and the direction smoothness; and generating a transition line segment according to a pairing result to supplement the fracture part of the non-closed curve. According to the method, non-closed breakpoints generated by scanning or drawing errors in the geological map can be automatically restored, and a closed curve with topological integrity and a smooth boundary is generated.
Owner:CHINA RAILWAY DESIGN GRP CO LTD

Pump performance curve correction method based on similarity principle

PendingCN122153209ASupport economic operationsSolve the problem of being unable to obtain the performance curve of all working conditionsComplex mathematical operationsMechanical engineeringMechanics
The application discloses a water pump performance curve correction method based on a similarity principle, relates to the technical field of water pump working condition analysis, and comprises the following steps: acquiring a conversion working condition point corresponding to a model pump test working condition point converted to a prototype pump and a theoretical performance curve of the prototype pump; confirming a similarity parabola passing through the field measured working condition point and mapping the similarity parabola to the theoretical performance curve of the prototype pump to obtain an intersection point as a similarity working condition point of the field measured working condition point according to a similarity parabola relationship and field measured working condition point data; obtaining a corresponding point under a theoretical rotating speed according to the similarity relationship and combining the working condition point on the theoretical curve of the prototype pump; replacing the theoretical rotating speed with a measured rotating speed, converting to a corresponding point under a rated rotating speed, and fitting to obtain an actual flow-head curve; and acquiring a theoretical efficiency value and an optimal efficiency value corresponding to the similarity working condition point to obtain an actual flow-efficiency curve, so that the actual performance curve of the prototype pump can be efficiently and accurately corrected.
Owner:广东粤海珠三角供水有限公司 +2

Fatigue crack growth rate prediction method for dissimilar titanium alloy diffusion bonded laminate structures

ActiveCN117423410BSimple generalized fatigue crack growth rate prediction relationshipFewer parameters are required for predictionStructural fatigueTitanium alloy
The present application relates to a method for predicting fatigue crack propagation rate of a diffusion bonded dissimilar titanium alloy laminate structure, which is based on the mechanical properties of the constituent materials of the dissimilar titanium alloy laminate structure, i.e., the quasi-static tensile properties of the two titanium alloy plies. The method for predicting fatigue crack propagation rate of the diffusion bonded dissimilar titanium alloy laminate structure first establishes the relationship between the fatigue crack propagation rate of the laminate structure and the mechanical properties of the laminate structure, and then establishes the relationship between the mechanical properties of the laminate structure and the mechanical properties of the dissimilar titanium alloy single ply, thereby describing the relationship of the fatigue crack propagation rate of the laminate structure. Compared with the prior art, the method of the present application has the advantages of simple and convenient test, engineering precision, rapid and practical, etc., and effectively reduces the test cost and test time required for crack propagation test of the dissimilar titanium alloy laminate structure processed from different parameters.
Owner:SHANGHAI JIAOTONG UNIV

Design and construction device for through type net-shaped inhaul cable long-span arch bridge

The utility model discloses a through netlike inhaul cable large-span arch bridge design and construction device which comprises a bridge floor, arch ribs and air cylinders, the arch ribs are arranged on the bridge floor in a bilateral symmetry mode, straining beams are correspondingly arranged on the left side and the right side of the bridge floor, a plurality of inhaul cables are arranged between the straining beams and the arch ribs, the inhaul cables are crossed to form a netlike structure, and the air cylinders are detachably arranged on the tops of the straining beams. The driving end of the air cylinder is connected with the bottom of the inhaul cable which is telescopic through the air cylinder. A plurality of air cylinders are installed at the top end of the straining beam, the air cylinders are connected with the tail ends of the inhaul cables to stretch out and draw back the inhaul cables, the inhaul cables stretch out and draw back to adjust pulling force between the arch rib and the straining beam, a better stable structure is achieved, and installation is convenient and fast. The fixed seat of the cylinder is detachably combined, so that the maintenance, assembly and disassembly are convenient, and daily maintenance is convenient; end cross beams are arranged at the front end and the rear end of the bridge floor, cross-shaped cross beams and longitudinal beams are arranged in the middle, and orthogonal special-shaped plates are poured, so that the bridge floor is stable and does not need to be supported by bridge piers; the device is novel in structure, high in practicability and suitable for popularization.
Owner:QUANZHOU URBAN PLANNING & DESIGN GRP CO LTD

Call detail record (CDR) billing methods, devices, equipment, and computer storage media

ActiveCN116846696Bmeet sharing requirementsImprove billing support capabilitiesMetering/charging/biilling arrangements
This application provides a call detail record (CDR) billing method, apparatus, device, and computer storage medium. The CDR billing is applied to a first billing system and includes receiving a resource allocation request sent by a second billing system based on a target billing CDR. The resource allocation request includes resource usage information from the target billing CDR and information about cross-provincial billing users in the target billing CDR. If it is determined that there are remaining resources in the first communication resource in the first billing system, the remaining resources of the first communication resource are deducted based on the resource allocation request and the resource usage information of the target billing CDR to obtain deduction result information. The deduction result information is sent to the second billing system so that the second billing system can deduct and bill resources whose resource usage exceeds that of the first communication resource based on the deduction result information. According to this application embodiment, it satisfies the requirement of sharing communication resources within packages across multiple provinces while reducing engineering costs and technical difficulty.
Owner:CHINA MOBILE GROUP ANHUI +1

A method for lengthening and tightening device anchor bolts

ActiveCN115972138Bincrease the lengthGuarantee the construction progressSpannersWrenchesClassical mechanicsBolted joint
The application discloses a device foundation bolt lengthening method and a tightening device in the technical field of device installation, the tightening device comprises a handle and a mounting ring mounted on the end of the handle, the tightening device further comprises a sleeve ring rotatably mounted in the mounting ring, a plurality of groups of slotted holes are formed in the outer side wall of the sleeve ring, an insertion block for being inserted into the slotted holes is slidably arranged on the mounting ring, a pressing block is slidably arranged on the handle, and a connecting rope is arranged between the pressing block and the insertion block, in the application, a screw rod with a nut is processed, internal threads are processed on the screw rod, the screw rod with the nut is directly connected with a pre-buried bolt, the length of the pre-buried bolt is increased, normal installation and fixation of the device are ensured, the difficulty of construction is reduced, the construction period is shortened, the work efficiency is improved, the construction progress of the project is ensured, and the engineering cost is reduced.
Owner:CHINA NAT CHEM ENG THIRD CONSTR

Hydraulic engineering desilting device

The hydraulic engineering desilting device comprises a ship body, a mounting frame is fixedly mounted on the upper surface of the rear side of the ship body, and connecting rods are connected to the two sides of the mounting frame. By using the height adjusting mechanism, the reciprocating mechanism, the stirring mechanism and the mud pumping mechanism, the desilting efficiency and quality can be remarkably improved. Through cooperative work of the height adjusting mechanism and the reciprocating mechanism, the sludge scraping mechanism can be flexibly adjusted according to the actual sludge depth and go deep into the bottom of a sludge layer to work, meanwhile, the stirring mechanism scatters the sludge through gear transmission, the dredging range is expanded, the sludge removing process is accelerated, and therefore the dredging period is greatly shortened, and the dredging efficiency is improved. And the engineering cost is reduced. Besides, the stirring mechanism is matched with the sludge pumping mechanism, so that comprehensive and deep cleaning of the sludge is ensured, the common problem of incomplete dredging in a traditional dredging method is avoided, and the water body and the ecological environment are effectively protected from being affected by secondary pollution of residual sludge.
Owner:LINFEN YUEHAI CONSERVANCY SURVEY & DESIGN CO LTD

An asymmetric non-mid-wall connected arch tunnel support system

The utility model discloses an asymmetric non -middle wall connected arch tunnel support system relates to tunnel support technical field, including connected arch tunnel first -pass hole initial support, connected arch tunnel first -pass hole initial support includes I20a type steel arch frame, inside phi 8 steel bar net, outside phi 8 steel bar net, steel arch frame connecting reinforcing steel bar, big arch foot reinforcing cage, big arch foot steel arch frame triangle bracing structure, big arch foot steel arch frame connecting steel sheet and stiffened steel plate, through the first -pass hole initial support of setting, first -pass hole initial support adopts I20a type steel arch frame, inside phi 8 steel bar net, outside phi 8 steel bar net, steel arch frame connecting reinforcing steel bar, big arch foot reinforcing cage, big arch foot steel arch frame triangle bracing structure, connecting steel plate and stiffened steel plate, form high -strength, high rigid support system, effectively disperses the surrounding rock pressure, reduces local damage, and system anchor rod and radial injection grouting small catheter consolidate surrounding rock through injection grouting, further enhances the stability of surrounding rock.
Owner:GANSU PROVINCE TRANSPORTATION PLANNING SURVEY & DESIGN INST

Tunneling process automation monitoring method

ActiveCN120889629BIncrease update frequencyGet instant access
The application discloses a tunnel construction process automatic monitoring method, and belongs to the technical field of tunnel engineering construction monitoring. The method comprises the following steps: step 1, automatic monitoring equipment is arranged at key positions of a tunnel opening area, an advanced support section, an excavation face, an initial support structure, a waterproof layer construction area and a secondary lining structure; step 2, each automatic monitoring equipment is started, and monitoring data is collected at a preset sampling frequency; step 3, after receiving the monitoring data, a central monitoring platform uses a big data analysis algorithm to deeply process the monitoring data; and step 4, the central monitoring platform feeds back monitoring results and early warning information after analysis to a tunnel construction control system in real time. The application realizes real-time data acquisition and analysis through 5G technology, especially the UWB positioning system collects data once per second, realizes instant acquisition and analysis of monitoring data, and compared with traditional manual monitoring, the data update frequency is improved by tens of times, and abnormal conditions in the construction process can be found in time.
Owner:SHANXI HUAZHU TECH CO LTD

A charging pile installation method

ActiveCN117104049BAvoid the risk of crossoverMaintain the city’s appearance and imageCharging stationsElectric vehicle charging technologyArchitectural engineeringStructural engineering
A charging pile installation method, steps as follows: in the setting position of the charging pile, the charging pile base for installing the charging pile is fixed to the ground; in the distribution box installation position, the distribution box base for installing the distribution box is fixed to the ground; the distribution box base is composed of a support plate, one side sealing plate; the charging pile base is composed of a support plate two, bottom plate two, two side sealing plate two; the wire slot of the wire box between the distribution box base and the charging pile base and / or between the charging pile base and the adjacent charging pile base is fixed to the ground; the upper end of the wire slot is bent inward; the distribution box is installed and fixed to the distribution box base; each charging pile is installed and fixed to the charging pile base; the cable is laid in the wire slot; then one end of each cable is connected with the distribution box, and the other end is connected with the charging pile; the slot cover is covered on the wire slot and fixed. The application does not need extra building materials during construction, is convenient for on-site installation, avoids the cross risk of underground pipe network, shortens the construction period, and saves the engineering cost.
Owner:XIANGYANG POWER SUPPLY COMPANY OF STATE GRID HUBEI ELECTRIC POWER +1

Welding-free full-assembled net rack rod piece reinforcing device and method

The present application relates to the technical field of net rack structure reinforcement, and particularly relates to a welding-free full-assembled net rack rod piece reinforcement device and method. The device comprises: a fixed center bearing frame for reinforcing a circular tube component; a telescopic vertical sliding inclined strut assembly arranged between two adjacent vertical fixed vertical rods; an assembled sectional sleeve assembly for fixing the fixed center bearing frame outside the circular tube component; a cable body for connecting two connecting bases on the fixed center bearing frame; and a tensioning adjusting mechanism for adjusting the tension of the cable body. The welding-free full-assembled net rack rod piece reinforcement device and method provided by the present application adopts a welding-free full-assembled construction process, and the components are standardized prefabricated in a factory. The components are only assembled by bolts and pins at the site, so that the construction is safe and efficient, welding damage is avoided, and the original structure performance is not affected. The components are connected by bolts, so that the components are convenient to disassemble and assemble, the components can be recycled and reused, and the engineering cost is reduced.
Owner:CHONGQING JIAOTONG UNIV +4

Temporary overlay turnouts and construction methods for tram non-stop operation conversion

ActiveCN117661381BEliminate operationsGuarantee the quality of renovationRail switchesTrackwayArchitectural engineering
This invention discloses a temporary superimposed turnout and its construction method for non-stop tramway retrofitting. When a break exists on one track of a double-track line, the broken section is merged into the other track. Temporary superimposed turnouts are installed in pairs on the existing track before and after the break. Each temporary superimposed turnout includes a main track section and a branch track section. Each main track section overlaps with the other track without a break, corresponding to either the break or the break, and includes a standard guide rail and two overlapping sections of the main track. Each branch track section includes a branch track overlapping section, a transition section, and a standard guide rail. Each branch track overlapping section overlaps with the track with the break. Each transition section connects to the corresponding main track section. The intersection of the standard guide rails of the main track section and the branch track section forms a crossing section. This invention saves on engineering and social organization costs, has minimal social impact, and the temporary turnouts are reusable, easy to install, and low-cost.
Owner:SHANGHAI URBAN CONSTRUCTION DESIGN & RESEARCH INSTITUTE (GROUP) CO LTD

A cement dosage control device for cement mixing piles

This utility model discloses a cement dosage control device for cement mixing piles, including a storage mechanism. The storage mechanism has a sealing mechanism at its top and a rotary motor at its bottom. The output end of the rotary motor is connected to a control mechanism. A guide pipe connecting the sealing mechanism and the control mechanism is inclinedly arranged at the bottom of the sealing mechanism. The storage mechanism includes a storage cylinder with a bottom plate at its bottom. A through hole is formed on the bottom plate, and a rotating plate is rotatably mounted on the through hole. The rotating plate is connected to the rotary motor via a bevel gear. The sealing mechanism includes a sealing plate, which is placed at the top of the storage cylinder, and a cover plate is provided at the top of the sealing plate. This utility model has the advantage of precisely controlling the cement dosage, solving the current problem of difficult cement dosage control in cement mixing piles.
Owner:中电建路桥集团有限公司

A method for preventing seepage in a karst depression catchment reservoir engineering

This invention discloses a seepage prevention method in karst depression water collection and reservoir construction projects, employing a combination of grouting curtain and underground river sealing measures. The method includes: 1) hydraulic parameter acquisition; 2) underground river slope calculation: based on hydraulic parameters and the difference between the underground river outlet and inlet velocities, the overall underground river slope is calculated using different methods; 3) determining the location of the upper grouting tunnel; 4) determining the underground river sealing location based on the slope; 5) calculating the grouting curtain height based on the slope; 6) constructing the grouting tunnel and sealing the underground river according to the location of the upper grouting tunnel and the underground river sealing location; and 7) grouting curtain construction. This invention improves the determination of key parameters during construction in karst depression water collection and reservoir construction projects, thereby increasing the accuracy and efficiency of seepage prevention construction and saving construction costs.
Owner:GUIYANG WATER RESOURCES & HYDROPOWER SURVEY DESIGN & RES INST CO LTD +2

Waterproof diversion blind ditch structure of diaphragm wall joint

The utility model relates to a waterproof flow guide blind ditch structure at the connecting place of diaphragm wall, it includes flow guide blind ditch main part, flow guide blind ditch main part sets up at the connecting place of diaphragm wall, is used for guiding the ground water flow, prevents the ground water and accumulates at the connecting place, the utility model discloses a flow guide blind ditch is established, effectively guides the ground water flow, prevents the ground water and accumulates at the connecting place, reduces the seepage risk, improves the overall waterproof performance of diaphragm wall, guarantees the engineering quality. The application still has the advantages such as convenient construction, low cost, can satisfy the efficient and economic demand of modern underground engineering construction.
Owner:SHANGHAI BAOYE GRP CORP +1

Knowledge blind area perception distillation method and system for target language model and readable storage medium

PendingCN122509308AReduce deployment complexityInjection is precise and efficientInformation densityData mining
This application relates to a knowledge blind spot perception distillation method, system, and readable storage medium for target language models. The method includes: segmenting domain documents into semantic fragments; generating a candidate question-answer pair set containing knowledge category labels using a first language model; obtaining the target language model's answers to each question without context; calculating a knowledge mastery score through fact-level comparison; filtering out an unknown question-answer pair set that the model does not yet possess; performing hash bucketing clustering on the unknown question-answer pair set according to category labels to obtain multiple topic clusters; and allocating character sub-budgets to each topic cluster based on the proportion of question-answer pairs; generating structured text based on the sub-budgets and unknown question-answer pairs; and finally assembling the text into distilled prompt words for use by the target model. This application effectively filters out knowledge already possessed by the model, increases the information density of the prompt words, and reduces the computational and storage overhead of edge deployment.
Owner:HANGZHOU TANYUAN INNOVATION CULTURE TECHNOLOGY CO LTD

A soft rock tunnel grouting reinforcement design method, a reinforcement system and a construction method thereof

ActiveCN116011060Blow costSpeed up the construction periodArchitectural engineeringRock tunnel
The present application relates to the field of civil engineering, in particular to a soft rock tunnel grouting reinforcement design method, a reinforcement system and a construction method thereof, wherein the anchor rod parameters are determined by determining the anchor rod reinforcement parameters in the local deformation abnormal area, calculating the anchor rod length L, calculating the anchor rod correction length L2' based on the deformation rate, and calculating the number of long anchor rods in the deformation section, the anchor rod parameters are determined, the initial support is applied after excavation, and the grouting pipe is set, then a plurality of monitoring points are set inside the initial support, grouting is carried out at the back cavity of the initial support, and the grouting effect is checked, finally, the anchor rod reinforcement is carried out in the local deformation abnormal area of the initial support, thereby solving the problems of large workload, long time consumption, construction period and cost control in the conventional grouting reinforcement treatment of large cavities and non-dense areas in the soft rock tunnel in the fracture clamping zone, and the anchor rod reinforcement solves the problem of poor treatment effect of the existing technical scheme on the initial support deformation abnormal area.
Owner:CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG

Self-energizing activated drainage gas recovery process

The invention belongs to the technical field of coal bed gas exploitation, relates to a self-energizing activated drainage gas recovery process, and introduces a self-energizing technology and a fracturing exploitation technology. In other words, before the self-energizing activator is injected, the fracturing technology is adopted to exploit the coal seam, high-pressure liquid or gas is injected into the coal seam, the coal seam is fractured, cracks are opened, and new cracks and channels are created. The self-energizing activator can increase the permeability of the coal bed, improve the pore connectivity, increase the release rate and collection efficiency of the coal bed gas, increase the quantity of the collected coal bed gas and reduce the waste of coal bed gas resources.
Owner:PETROCHINA CO LTD

Component gantry crane and fine adjustment balance control method thereof

The component gantry crane and fine adjustment balance control method thereof disclosed by the application realize high-precision displacement adjustment of components through fine adjustment devices to improve hoisting precision, reduce engineering cost, ensure controllable stress of hoisting ropes and improve safety performance of assembly operation under the premise of improving construction efficiency, and have important popularization value for installation of large subway stations. The component gantry crane comprises a portal, two groups of omni-directional fine-adjustable hoisting trolley devices are movably arranged on the top of the portal, the two groups of omni-directional fine-adjustable hoisting trolley devices respectively vertically suspend adjustable balance hoisting devices, the adjustable balance hoisting devices are installed on a cross beam in the vertical direction, four groups of hoisting device force adjusting devices are installed on the cross beam, and hoisting ropes of the hoisting device force adjusting devices suspend prefabricated components; the omni-directional fine-adjustable hoisting trolley device comprises an upper trolley lifting part borne on a lower trolley running device and an upper trolley translation mechanism; running between the upper trolley translation mechanism and the lower trolley running device is perpendicular in the horizontal direction.
Owner:QINGDAO ZHONGKE KUNTAI ASSEMBLY CONSTR TECH CO LTD

A land-based scaffolding structure and method for simulating the construction state of high-altitude bridges

This invention provides a land-based frame structure simulating the construction of an aerial bridge, comprising symmetrically arranged lateral enlarged foundations, two symmetrically arranged intermediate enlarged foundations, and two symmetrically arranged outer enlarged foundations. Side columns are installed on the lateral enlarged foundations, intermediate columns on the intermediate enlarged foundations, and outer columns on the outer enlarged foundations. The tops of the lateral, intermediate, and outer columns on the same side are simultaneously fixed to a longitudinal beam. An intermediate platform and two lateral platforms are provided between the two longitudinal beams. A longitudinal connection system is provided between the lateral and intermediate columns, a lateral connection system is provided between the lateral columns, and an intermediate connection system is provided between the two intermediate columns. A simulated beam bottom plate structure is provided on the intermediate connection system. Pre-stressing reaction frame joints are symmetrically arranged on the two intermediate columns. A simulated beam flange structure is provided between the two longitudinal beams, and a simulated outrigger support structure is provided on the longitudinal beams. This invention can simulate the construction process of land-based aerial bridge equipment and identify potential hidden problems in the equipment.
Owner:CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP CO LTD +1

A cold and hot water pipe installation auxiliary positioner

ActiveCN224592855UEasy positioningGuaranteed installation accuracy
This utility model discloses an auxiliary positioning device for installing hot and cold water pipes, comprising: a positioning plate with mounting holes, the spacing of which is the same as the design spacing of the hot and cold water threaded elbows, and the diameter of the mounting holes being larger than the inner diameter and smaller than the outer diameter of the hot and cold water threaded elbows; a pad, disposed between the positioning plate and the wall, used to adjust the distance between the positioning plate and the wall and control the distance of the end face of the hot and cold water threaded elbow from the wall; a fixing member, used to pass through the positioning plate and the pad to fix the positioning plate and the pad to the wall; and a plug, the outer diameter of which is adapted to the inner diameter of the hot and cold water threaded elbow, the plug being inserted into the hot and cold water threaded elbow through the mounting holes. This application simplifies various positioning operations for hot and cold water threaded elbows, improves installation quality, and reduces project costs.
Owner:THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU

Soil volumetric moisture content measurement system based on LoRa-RSSI and UAV

This invention discloses a soil volumetric water content (VWC) measurement system based on LoRa-RSSI and a drone. The system comprises several underground LoRa nodes for collecting environmental monitoring data; a host computer embedded in the soil; and an aerial node carried by a small drone. Combining IoUT technology, this invention designs an innovative system for soil VWC measurement based on LoRa received signal strength and a drone. The system utilizes the changes in LoRa-RSSI between the soil's internal transmitter and the drone's aerial receiver during the drone's angular rotation. Combined with a Long Short-Term Memory (LSTM) network, it collects differential LoRa-RSSI values ​​and uses a deep learning (DL) algorithm to calculate soil VWC, achieving relatively accurate soil VWC data. This invention eliminates the need for depth measurement of VWC data, utilizes soft sensors to measure soil VWC, and offers low cost, high efficiency, and small measurement error, providing a novel approach for soil VWC measurement design.
Owner:NORTH CHINA INSTITUTE OF SCIENCE & TECHNOLOGY (NATIONAL SAFETY TRAINING CENTER OF COAL MINES) +1

Recyclable prefabricated formwork concrete pouring auxiliary device

A reusable prefabricated formwork concrete pouring auxiliary device comprises a lower U-shaped support, a connecting rod and a supporting formwork. The lower U-shaped supports are arranged in the poured formwork at intervals in the longitudinal direction. A U-shaped notch of the lower U-shaped support is arranged downwards, and the top of the lower U-shaped support is not lower than the top of a poured formwork. The connecting rods are arranged on the two sides of the tops of the set of lower U-shaped supports and gradually incline outwards from bottom to top. A tie bar is arranged between the upper ends of the connecting rods on the two sides of the top of the lower U-shaped support; the supporting formworks are arranged on the outer sides of all the sets of connecting rods, and the lower ends of the supporting formworks are in lap joint with the tops of the poured formworks on the corresponding sides. Steel wire ropes wrap the outer sides and the bottoms of the supporting formworks on the two sides, and the two ends of the steel wire ropes are connected to the upper portions of the inner side faces of the supporting formworks on the two sides respectively. The technical problems that during traditional concrete pouring, the height of a free falling body is too large, concrete falls outside a formwork and cannot be recycled, and on-site concrete pouring excess needs to be reduced are solved.
Owner:CHINA CONSTR FIRST BUREAU GRP SOUTHEAST CONSTR CO LTD +2

A building material turnover auxiliary device for construction engineering

ActiveCN224492149Uachieve orderly placementRealize limit
The utility model relates to building pipe spacer technology field, concretely is a kind of building material turnover auxiliary device for construction engineering, including spacer, spacer is placed below multiple building construction pipe, the both ends of spacer are respectively provided with splicing groove one and splicing groove two, two spacers are spliced by splicing groove one and splicing groove two misregistration when head-to-tail splicing, and two spacer splicing places are connected by screw rod, the surface of spacer is equipped with rope body, and rope body is used for limiting building construction pipe;Beneficial effects are that: rope body is further limited to building construction pipe.Rope body one end is bolted on the bolted rod between the reserved mouth side wall, and the other end is bolted on the bolted ring welded and fixed on the top surface of spacer after passing through pipe.In the other end of bolted rope body, tensioning rope body makes it be in taut state, can tightly squeeze building construction pipe on spacer, avoid pipe from spacer drop, provide double protection for the stable placement of pipe, improve the safety and reliability in the process of pipe turnover.
Owner:青岛加信建设工程有限公司

Cavitation water jet assisted self-cleaning hob

ActiveCN115977670BSolving sludge problemsAvoid partial wearDisc cutterWater jet
The application provides a self-cleaning hob of a disc cutter assisted by a cavitation water jet, which comprises a hob side plate, a disc cutter and a cleaning component; the disc cutter is arranged between the two hob side plates through a cutter shaft, the two ends of the cutter shaft are detachably arranged on the two hob side plates, and the disc cutter can rotate around the cutter shaft; the cleaning component is rotatably arranged on the side of the cutting edge of the disc cutter and can clean the cutting edge of the disc cutter; the disc cutter is provided with a transmission assembly, the transmission assembly is in transmission connection with the cleaning component; the transmission assembly can rotate together with the disc cutter, so as to drive the cleaning component to rotate; the scheme provided by the application can fundamentally improve the tunneling efficiency, solve the problem of mud accumulation of the cutter head of the tunneling machine, reduce the eccentric wear of the cutter ring, prolong the service life of the cutter, shorten the construction period and reduce the engineering cost, so as to achieve the purpose of reducing the construction burden and make up for the deficiency of the existing mud accumulation response measures of the cutter head.
Owner:CHINA UNIV OF MINING & TECH (BEIJING) +2

A lumbar disc herniation postoperative recurrence risk prediction system based on domain offset correction

PendingCN122291046Aaid in early identificationDevelop differentiated follow-up strategiesMedical treatmentRisk stratification
This invention discloses a system for predicting the risk of recurrence after lumbar disc herniation surgery based on domain offset correction, relating to the fields of medical data processing and clinical disease risk prediction technology. The system acquires multimodal clinical and imaging feature vectors and follow-up outcome data from training and independent validation cohorts. It trains a center classifier to quantify and correct for differences in multi-center data distribution, calculates and normalizes the importance weights of each training case, trains a survival analysis base learner based on the processed weights, and performs stacking and ensemble integration. The final deployment model is determined by combining the independent validation case cohort. The final deployment model is then used to infer the risk of recurrence in target patients after lumbar disc herniation surgery, outputting individualized recurrence risk scores, risk stratification, and recurrence-free survival curves. This improves the robustness and reliability of the risk prediction system in cross-center scenarios and is suitable for follow-up management and clinical decision support after lumbar disc herniation surgery.
Owner:ZHEJIANG HOSPITAL

Permanent and temporary combined prestressed anchor rod structure

ActiveCN224495110UReduce the number of projectsReduce breakage and collapse holes
The utility model provides a kind of permanent and temporary combination prestressed anchor rod structure, including multistage anchor rod structure, the multistage anchor rod structure is sequentially from bottom to top anchorage section, free section one, anchor head one, free section two, anchor head two.The utility model can reduce anchor rod engineering quantity, construction difficulty and safety risk reduce, ensure that lining structure is stable and safe, reduce rock mass broken hole and side slope disturbance problem;Ensure that anchor rod structure is combined into complete unit with concrete, reduce tensioning prestress loss, ensure grouting full and dense, ensure construction quality, reduce engineering cost.
Owner:NO 3 ENG COMPANY LTD OF CCCC FIRST HARBOR ENG COMPANY +1

Mountain road retaining structure

The utility model relates to the technical field of road retaining, and discloses a mountainous area road retaining structure which comprises a retaining wall formed by splicing a plurality of wall blocks. Each wall block is provided with two filling grooves matched with stone concrete filling, U-shaped notches are formed in the surrounding edges on the outer sides of the two filling grooves, and after the two left and right adjacent wall blocks are spliced, inserting blocks are transversely inserted into the U-shaped notches in the two butted surrounding edges. The top end of one side of each wall block is provided with a right-trapezoid protrusion, the bottom end of each wall block is provided with a right-trapezoid opening, and when the upper-layer wall blocks and the lower-layer wall blocks are spliced, the right-trapezoid protrusions of the lower-layer wall blocks are inserted into the right-trapezoid openings of the upper-layer wall blocks. When the upper-layer wall blocks and the lower-layer wall blocks are spliced, the upper-layer wall blocks are spliced in the middle positions of the left-right adjacent wall blocks. By arranging the transverse anchor bars, the longitudinal anchor bars and the vertical anchor bars, a three-dimensional anchoring system is formed, and the connectivity between the wall blocks and the stability of the whole structure are greatly enhanced.
Owner:YUNNAN DESIGN INSTITUTE GROUP CONSTRUCTION CO LTD

A bearing creep control method and device based on variable interface performance

PendingCN122280953AImprove ultimate carrying capacityAchieve dynamic homogenizationGratingFrictional coefficient
This invention relates to the field of heavy-duty bearing design and application technology, specifically to a bearing creep control method and device based on variable interface performance. The device comprises an annular multifunctional variable interface layer between the bearing outer ring and the bearing housing. This interface layer is composed of stable anchoring units with high elastic modulus and high friction coefficient, and directional slip triggering units with low elastic modulus and low friction coefficient, periodically and alternately distributed along the circumference. The number of circumferential partitions is coprime to the number of bearing rollers, enabling directional, step-like triggering of controlled micro-creep. The surface of the interface layer is provided with a checkerboard or spiral groove network filled with a functional medium to achieve damping dissipation, lubrication protection, and stiffness regulation. An integrated grating displacement monitoring component is also included for graded judgment of creep state.
Owner:ZYS INT CO LTD +1

Heavy duty telescopic soft ground tailings pit filling conveyor

PendingCN122585607APrevent deviationreduce deviation
The application discloses heavy telescopic soft ground tailing pit filling conveyor, including fixed frame, telescopic frame, power roller, first motor, first speed reducer, V-shaped support, fixing bolt, inclined support roller, first support roller, conveying belt, limit rod, hydraulic push cylinder, counterweight bottom plate, hydraulic station, fixed support, winding roller, second motor, second speed reducer, inclined support, steel wire rope, bearing plate, hydraulic top cylinder and connecting seat, the fixed frame is rotatably connected with power roller, third deflector and fourth deflector, the fixed frame is slidably connected with telescopic frame, the telescopic frame is rotatably connected with first deflector and second deflector, the heavy telescopic soft ground tailing pit filling conveyor is designed, and the pit filling material is centrally conveyed to the pit by V-shaped conveying belt, compared with the conventional mode of vehicle transfer and forklift pushing, the efficiency loss caused by multi-link cooperation is eliminated, and the material accumulation at the edge of the pit is effectively avoided.
Owner:HEBEI PENGYU METALLURGY MASCH MFG CO LTD