293 results about "Surface construction" patented technology

The invention discloses an intelligent construction method, system, equipment and medium based on a digital twin tunnel, and aims to construct a high-precision physical entity model by fusing dynamic and static data in real time through multiple types of sensors so as to improve data acquisition comprehensiveness; based on tunnel-level, soil-level and ground building-level multi-level modeling and finite element analysis, fine mechanical stability simulation is realized; multi-dimensional data features are extracted by combining a convolutional neural network algorithm, security risks are evaluated, and a reinforcement scheme is optimized through dynamic iteration; a closed-loop regulation and control mechanism of data monitoring, numerical simulation and dynamic feedback is formed by utilizing a collaborative architecture of a sensing layer, a simulation layer and a display layer, so that environmental disturbance is effectively reduced, and construction safety is guaranteed; according to the method, digital twinning, BIM, finite element analysis and deep learning are fused, real-time monitoring and intelligent optimization of the whole construction process are achieved, efficiency and safety are remarkably improved, and influences on the surrounding environment are reduced.

The invention discloses a salt cavern gravity compressed air energy storage system which comprises a salt cavern, a vertical shaft is vertically formed in the top of the salt cavern and communicated to the ground surface, a sealing film is arranged on the side wall of an inner cavity of the salt cavern and divides the salt cavern into a water storage cavity and an air storage cavity, and the bottom of the air storage cavity is connected with one end of an air pipe. A piston is arranged in the vertical shaft, a gravity block is arranged at the top of the piston, a water pipe communicated with the water storage cavity is arranged at the bottom of the water storage pool, and a water conservancy generator set is arranged on the water pipe. Liquid gravity is matched with salt cavern gas storage, liquid can be matched with the irregular shape of a salt cavern, construction is reduced, energy density is increased, construction difficulty can be reduced through ground surface construction, the problem that a traditional compressed air energy storage system is large in investment cost is solved, and meanwhile the problem that salt cavern resources are reused is solved.

The invention relates to the technical field of high-precision positioning in water surface construction, and discloses a Beidou positioning-based cofferdam positioning method for bridge construction, which comprises the following steps: S1, initializing Beidou RTK, setting a base station, acquiring an initial position of a cofferdam, and realizing centimeter-level positioning by using differential correction; s2, fluid-solid coupling modeling is carried out, a dynamic model of the cofferdam under the action of water flow, tide and wind power is established based on a computational fluid mechanics method, and stress and deformation of the cofferdam are calculated in combination with finite element analysis; and S3, estimating an unscented Kalman filtering state, and calculating the current position, speed and error range of the cofferdam based on the historical position information of the cofferdam and fluid-solid coupling modeling prediction data. According to the method, the timeliness of error correction is ensured through an error loop feedback mechanism and a real-time alarm function, the robustness and stability of the system are improved, and the positioning precision and reliability of the cofferdam in the construction process are remarkably improved.

The utility model discloses a green curtain wall for subway ground buildings in hot areas, which comprises a plane material component, a support component, a connecting component and a sealing material component, the plane material component is formed by splicing a plurality of groups of photovoltaic glass, the support component is respectively composed of an aluminum alloy cross beam and an aluminum alloy upright post, and the connecting component is connected with the aluminum alloy upright post. The top and the bottom of one side in the aluminum alloy stand column are provided with insulation protection sleeve wire passing holes. According to the photovoltaic curtain wall system, each piece of photovoltaic glass on the curtain wall system is divided into independent small units, and a plurality of photovoltaic curtain wall assemblies are evenly arranged on the outer wall face to form a complete curtain wall; the connecting components are arranged to be connected with the keel cross beams, installation is easy and convenient, independent disassembly can be conducted, and overhaul and maintenance are very convenient and fast; and meanwhile, the photovoltaic glass cable is ingeniously hidden in the curtain wall stand column and the cross beam, so that any change cannot be seen from the appearance, and perfect fusion is realized.

The invention discloses an airport clearance obstacle assessment reference height three-dimensional surface construction assessment method and system, and the method comprises the steps: S1, constructing a plane-coordinate system on a three-dimensional geographic information system GIS, obtaining runway data of a research airport, and projecting the runway data to the plane-coordinate system through an NTS class library, projecting the clearance confinement zone parameter table to a plane coordinate system by adopting an NTS class library; s2, on the basis of a clearance graph element space operation model, successively dividing each restricted area from the runway center to the outside in a plane-coordinate system; and S3, setting a height limitation parameter corresponding to each limitation area, and constructing a corresponding obstacle evaluation reference height three-dimensional surface on a three-dimensional geographic information system GIS according to the height limitation parameter of each limitation area by using the Cesium library model. According to the invention, the clearance graph element space operation model correspondingly constructs each restricted area based on the clearance restricted area parameter table and constructs the obstacle assessment reference height three-dimensional surface by using the Cesium library model, so that the target obstacle assessment can be quickly and accurately realized.

The invention discloses a building design modeling method and system based on a parameter entity and a Boolean relationship thereof, and the method comprises the steps: converting a plurality of building components into geometric body data based on a structure shape, and abstracting a single geometric body into a whole model according to the Boolean relationship between the building components required by the design; the method specifically comprises the steps that firstly, building design related component data given by a user is preprocessed, a two-stage structure is adopted to redefine a geometry, the geometry is stored, and the Boolean relation between components is represented through a tree structure; the preprocessed data are transmitted into a grid generation solver, and a final three-dimensional model and affiliated topological information are obtained through background grid and contour surface construction, topological information integration and grid post-processing. The method can ensure that the building design modeling process has good robustness and calculation efficiency.

The invention discloses a metropolitan corridor spatial form management and control partition delimiting method. The method comprises the following steps: S1, data acquisition and processing: acquiring and processing urban geographic information corresponding to each landscape unit in a selected area; s2, constructing a resistance surface: constructing the resistance surface, and updating the resistance surface in real time according to the change of the ecological environment and the land utilization type by adopting a dynamic resistance coefficient assignment method; s3, metropolitan corridor path determination: determining an urban ecological corridor path between any two ecological source lands based on a minimum cumulative resistance model; s4, centrality calculation and importance grading: performing centrality calculation on the urban ecological corridors based on a circuit theory, determining a centrality value of each ecological corridor, and performing importance grading on the urban ecological corridors according to the centrality values; and S5, constructing a suitability index system and determining a spatial range: determining a suitable construction spatial range and a priority level of the urban ecological corridor, and establishing the suitability index system based on machine learning.

The utility model provides a house wall surface construction device, which relates to the technical field of house construction and comprises a construction device base, a handle is mounted on the top surface of the construction device base, tires are mounted at the bottom of the construction device base, and a weight increasing plate is mounted on one side, close to the tires, of the bottom of the construction device base. A mounting hole is formed in the surface of the weight increasing plate, a weight increasing block is mounted in the mounting hole, a fixing plate is mounted on the side, away from the handle, of the top of the construction device base, a fixing rotary knob is mounted on one side face of the fixing plate, and a connecting rod is mounted on the inner side of the fixing plate; and an adjusting knob is installed at the top of the end, away from the fixing plate, of the connecting rod, a suction cup is installed at the bottom of the adjusting knob, the stability of the construction device can be improved when workers are lifted, the falling situation possibly caused by the unstable supporting center is reduced, and the safety of the construction device is improved.

The invention provides a quantitative characterization method and a quantitative characterization system for oil and gas transport efficiency of a sandstone lateral migration channel, and the method comprises the steps: obtaining a contour line included angle and a target stratum inclination angle of each well position at two sides of a construction ridge or valley according to a target stratum top surface construction contour map, and constructing a construction ridge or valley transport index according to the contour line included angle; buoyancy borne by the target stratum of each well position is obtained according to the target stratum dip angle; obtaining the residual pressure difference gradient of each well position according to the target layer pressure plane distribution diagram; superposing the contour map of the top surface structure of the target stratum and the pressure plane distribution map to obtain an included angle between an inclined reverse extension line and a residual pressure difference gradient direction in the target stratum of each well position; obtaining the weighted average permeability and the porosity of the target layer of each well location, the ridge or valley construction conduction index of each well location, the buoyancy borne by the target layer, the residual pressure difference gradient and the included angle to construct comprehensive evaluation indexes of each well location; and quantitatively characterizing the oil and gas transport efficiency of the sandstone lateral migration channel by using the comprehensive evaluation indexes of each well location. According to the invention, the lateral conduction channel conduction efficiency can be evaluated visually, simply and conveniently.

The invention discloses a combined path swept surface construction method based on isoparametric line extraction. The method comprises the following steps: a geometric model comprises n swept contours and n swept paths; the scanning contours are in one-to-one correspondence with the scanning paths; initializing a path index k representing a sweeping path sequence number; s2, acquiring a sweeping path according to the path index k, and acquiring and updating a sweeping contour according to the sweeping path; obtaining a corresponding single-section scanning curved surface according to the scanning contour; s3, intercepting an isoparametric line of which the parameter value is 1 in the scanning contour direction of the single-section scanning curved surface; the isoparametric line represents the geometric contour of the tail end of the single-section swept curved surface and has the same geometric continuity and space continuation with the swept contour; the isoparametric line is used as a scanning contour corresponding to the scanning path under the next path index k; updating the path index k; backtracking to the step S2 until the path index k is equal to n; and S4, sewing all the generated single-section scanning curved surfaces by adopting a Brep structure, and constructing and outputting an overall three-dimensional scanning model.

The invention relates to the technical field of roadbed side slopes, and provides a roadbed side slope construction process which comprises the following steps: S1, construction preparation: according to a drawing and survey and arrangement reference data and survey marks provided by a station supervision engineer, conducting traverse survey, leveling and side pile measurement in a roadbed, and summarizing a measurement result; s2, construction lofting is conducted, specifically, a roadbed center line and a filling slope toe line are paid out through a coordinate lofting method, and the slope toe position is calculated according to the set drawing specific height; s3, slope surface construction is conducted, specifically, paying off and slope brushing are conducted, a cushion layer is laid and then strickling is conducted, a formwork is installed according to the size of a to-be-reserved expansion joint, then concrete is poured, and after the concrete is dried to form a concrete layer, the formwork is detached; and S4, elastic filling strips are installed, specifically, connecting rods are inserted into the concrete layers on the two sides of the expansion joint, and the ends, away from the concrete layers, of the connecting rods extend into the expansion joint. The roadbed slope protection structure has the beneficial effect of improving the protection effect on the roadbed slope.

The utility model relates to suspension equipment for bridge bottom surface construction, which comprises driving vehicles arranged close to the edge sides of two curbs of a bridge and a suspension assembly connected with the two driving vehicles, the suspension assembly comprises a suspension bracket connected with the output end of a preset hydraulic cylinder on the driving vehicles, and a support frame is arranged on the side wall of the suspension bracket facing the outside of the bridge. A mounting plate is horizontally arranged on the supporting frame, the mounting plate is in sliding fit with the lifting frame in the vertical direction through a preset through hole, a steel hook is arranged at the bottom of the lifting frame, a winding rod is rotationally arranged on the side, away from the hanging frame, of the supporting frame, and winding steel wires are wound around the two ends of the winding rod; the equipment further comprises a treading platform formed by splicing a plurality of treading frames, and the top of the treading platform is connected with the winding steel wire and the steel hook through a hanging ring and a lifting hook. The device is simple in structure and convenient to use, and the working area can be adjusted according to construction requirements.

The invention discloses a lunar surface environment simulation device for simulating a lunar surface construction test. The lunar surface environment simulation device comprises a frame; the lunar surface terrain simulation module is used for simulating the lunar surface terrain; the universe background simulation module is used for simulating the universe background; the light simulation module is used for simulating the illumination condition of the lunar surface; the temperature simulation module is used for simulating the temperature change of the lunar surface; the humidity simulation module is used for simulating the humidity of the lunar surface; the vacuum simulation module is used for simulating the vacuum environment of the lunar surface; and the construction simulation module is suitable for simulating the lunar surface construction process on the lunar surface terrain simulation module. The lunar surface environment simulation device for simulating the lunar surface construction test has the advantages that the lunar surface environment simulation device is close to the actual lunar surface environment, and the construction process can be conveniently verified.

The invention belongs to the technical field of assembly lines, and particularly discloses a curved surface segmentation assembly line which comprises a segmentation workshop span A, a segmentation workshop span B, a curve segmentation line A, a curve segmentation line B and a jig frame transverse moving device. The segmentation workshop span A and the segmentation workshop span B are symmetrically arranged, the curve segmentation line A is arranged in the segmentation workshop span A, and the jig frame transverse moving device is arranged in the curve segmentation line B; the curve subsection B line is arranged in the subsection workshop B span, and the jig frame transverse moving device is arranged between the curve subsection A line and the curve subsection B line; the movable curved surface jig frame is adopted, so that the movable curved surface jig frame can be suitable for the curved surface section with a straight plate as the curved surface section to build a base plane, and can also be easily applied to the curved surface section with a curved surface outer plate as the building base plane. The movable curved surface jig frame can be recycled in the workshop through the circulation of the movable curved surface jig frame and the transverse movement of the jig frame transverse movement device in the two spans of the workshop.

The invention discloses a reservoir damming branch blocking information extraction method and device based on a digital elevation model, and the method comprises the steps: obtaining a reservoir digital elevation model and key parameters, and extracting a corresponding water level isoline data set, a range boundary and slope data; after contour line data sets are classified, different types of pattern spot data sets are formed through surface construction and space relation operation; performing spatial inclusion relation query and judgment processing on the pattern spot data set to form a damming water area pattern spot object set; the object set is traversed, the nearest point and the minimum distance between the object set and the main flood prevention limited water level pattern spots or the object set are calculated, a damming and blocking branch object is formed, and the dam crest plane area, the average elevation, the loss reservoir capacity of the damming and blocking branch and the influence reservoir capacity are calculated. According to the method, the technical problems of limited precision, incomplete information extraction and the like due to the fact that the current damming and blocking branch information depends on manual identification are solved, and a basis is provided for reservoir flood control capacity analysis and damming and blocking branch rectification decision making.

The invention provides a method for compensating influence of net rack deformation on inner profile precision, and belongs to the technical field of wind tunnel body inner profile construction. A minimum dominating set algorithm is adopted to optimize sensor layout to construct a three-dimensional deformation monitoring network, and a pre-arching compensation optimization function is used to calculate a preset elevation compensation value; in the net rack splicing process, splicing errors are corrected in real time through a structural deformation self-adaptive compensation model, displacement synchronization in the lifting process is ensured through a synchronous hydraulic lifting system and a lifting deformation control algorithm, and after a net rack is in place, the actual geometrical shape of an inner molded surface is obtained through a three-dimensional laser scanning technology. According to the deviation value, comprehensive compensation measures of supporting jig frame elevation adjustment, temporary supporting structure arrangement, follow-up construction load distribution control and net rack node position fine adjustment are adopted for deformation compensation, and the technical problem that due to net rack deformation, the geometric accuracy of the inner profile of the lower hanging cast-in-place slab is difficult to control is solved.

The invention relates to the technical field of machining part non-ideal surface generation, and particularly discloses a wavelet and fractal-considered assembly junction surface construction method which comprises the following steps: S1, according to an ideal mathematical model of an assembly junction surface, S2, comparing calculation methods of different fractal parameters, S3, aiming at the part assembly junction surface in different machining modes, calculating fractal fractal parameters according to a calculation method of the different fractal parameters; s4, the assembly junction surface is regarded as a structure formed by superposition of contours of different scales, S5, a power spectrum analysis method is introduced to analyze the surface contour curve characteristics of the assembly junction surface, and S6, according to the isotropic or anisotropic properties of the surface of the assembly junction surface in different machining modes, the surface contour curve characteristics of the assembly junction surface are analyzed. The statistical distribution characteristic parameters determined in the step S3 are introduced into characterization of the assembly joint surface; and S7, the contour curve characteristic parameters extracted in the step S4 are associated with the fractal parameters determined in the step S2. According to the method, multi-scale decomposition is carried out on the assembly joint surface through wavelet transform, and the specificity information of the roughness contour, the waviness contour and the shape error contour can be effectively extracted.

The present invention discloses a solid-liquid coupling simulation method with surface tension effect based on the material point method, belonging to the fields of computer graphics and physics-based simulation. The system used in the simulation method includes solid model modeling, fluid model modeling, Level Set implicit surface construction, Marching Cubes display surface construction, surface particle resampling, and collision detection. The system simulates fluids and solids on the basis of the material point method, constructs Level Set to resample fluid surface particles, and adds surface tension to the fluid using the CSF model. Different background grids are used to simulate fluids and solids respectively to solve the inherent adhesion phenomenon during MPM solid-liquid coupling and achieve the slip contact effect during solid-liquid coupling. Finally, the coupling phenomenon of incompressible fluid with surface tension effect and nonlinear elastic solid is realized.

The invention discloses a construction method of a composite sandwich thermal insulation building block constructional column, which is characterized by comprising the following steps of: S1, checking and accepting embedded steel bars of the constructional column, and pre-discharging a story number line of brick building blocks according to an elevation control line and the elevations of a windowsill and a window top; s2, typesetting and designing according to the size of the heat bridge part, and popping up a floor axis, a wall body side line and a constructional column side line; s3, the composite sandwich heat preservation building blocks are built to form a wall body; a horse tooth rubbing position at the joint of the constructional column is reserved; s4, supporting a film on the constructional column and pouring; s5, removing the mold and cleaning the site; the characteristic of a three-layer structure of the composite sandwich thermal insulation building block is reasonably utilized, a standard stubble groove body formed by an inner blade and the complete building blocks on the two sides is removed at the constructional column, a standard constructional column is formed through pouring, and the connectivity between the constructional column and walls on the two sides is effectively enhanced; the building block outer side heat preservation layer without the inner blades and the outer blades can also be used as templates to reduce material loss, and the outer surface of the constructional column formed in the mode is flush with a normal building block, so that the continuity of a surface construction layer is not affected.

The utility model discloses a wall surface construction structure with an arc-shaped folding edge, which belongs to the technical field of wall surface decoration construction and comprises a decoration plate and a folding edge connecting piece, the folding edge connecting piece comprises a central connecting body and a connecting plate, the central connecting body is arranged at an external corner position of a wall body, and the connecting plate is fixedly connected with the central connecting body. The utility model discloses a wall external corner connecting piece, which comprises a plurality of central connecting bodies, two connecting plates are fixedly connected to each central connecting body, the two connecting plates are respectively attached to two wall surfaces at the position of a wall external corner, and a decorative plate is fixed with the connecting plates through fasteners, the wall external corner connecting piece has the beneficial effects that the wall external corner connecting piece is provided with two folding edge connecting pieces with different structures, and is respectively used for the situation that the wall external corner is a right angle or an arc, so that the wall external corner connecting piece is convenient to use. And in addition, for an arc-shaped external corner on a construction site, the edge folding connecting piece can be bent into the required radian on site, so that the decoration plate is more convenient to install, and after the decoration plate is installed, the edge folding connecting piece can be wrapped in the decoration plate through soft wrapping leather, so that the attractiveness is improved.

The utility model discloses a profiling supporting hanging basket, particularly discloses a profiling supporting hanging basket for arc-shaped outer wall surface construction, and belongs to the technical field of design and manufacturing of building engineering construction process devices. According to the profiling supporting hanging basket for arc-shaped outer wall surface construction, the construction safety is remarkably improved, and the functions are relatively complete. The profiling supporting hanging basket comprises a profiling hanging basket body, the profiling supporting hanging basket further comprises a limiting, guiding and stabilizing mechanism and a material grabbing and lifting mechanism, the limiting, guiding and stabilizing mechanism is arranged on the portion, on one side of the inner arc-shaped structure, of the profiling hanging basket body, and the material grabbing and lifting mechanism is arranged on the portion, on one side of the outer arc-shaped structure, of the profiling hanging basket body; in the construction process of the arc-shaped outer wall surface attachment, the profiling hanging basket body is limited and kept stable through the limiting, guiding and stabilizing mechanism, and materials in the construction process are conveyed to the profiling hanging basket body from the ground through the material grabbing and lifting mechanism.

The present invention discloses a side milling cutter position planning method for weight adjustment of non-developable ruled surfaces. The method first completes the non-developable ruled surface construction based on the original control points; secondly, the original two-point offset algorithm is used to obtain the initial tool axis vector with equal parameters, and the maximum overcut position of the corresponding side milling area is solved; then the maximum overcut offset position and the initial tool vector are used to form two segmented vectors, and the weight factor is calculated; finally, the side milling cutter axis vector after weight adjustment is obtained. In addition, the method calculates different weight factors for different distortion positions, which can be better adapted to the side milling of non-developable ruled surfaces. The present invention focuses on the side milling processing errors of non-developable ruled surfaces, especially the overcut and individual positioning tool errors, and completes the purpose of outputting the tool axis vector by the weight optimization algorithm with the initial tool axis vector as the starting point, thereby improving the side milling processing accuracy and efficiency, and providing certain technical support for the field of modern mechanical manufacturing and processing.

The application discloses a recycled aggregate crushing simulation and optimization method based on a DEM particle crushing algorithm, which is based on the Griffith strength theory and the discrete element method, realizes efficient and accurate simulation of particle crushing behavior through single-particle three-dimensional stress calculation, crushing criterion establishment, fracture surface construction based on a contact point origin and sub-particle attribute inheritance, and forms a method from parameter calibration to dosage quantification; the application quantifies the maximum dosage of recycled aggregate under different highway grades and base types by revealing the mesoscopic mechanism that recycled mortar is similar to natural crushed stone in mechanical properties and recycled bricks have a decisive control on the crushing value of the mixture, and provides a theoretical reference and practical guidance for the resource high-value utilization of building solid waste recycled aggregate in road bases.

The application discloses a kind of medical titanium alloy material surface antibacterial functionalization processing methods, first by hydrothermal oxidation and high-temperature sintering processing in titanium alloy material surface construction TiO2 Nanometer sheet, then deposit W 18 O 49 Quantum dots are deposited on the TiO2 Nanometer sheet, and TiO2 / W 18 O 49 Heterojunction is constructed on the surface of titanium alloy.TiO2 / W 18 O 49 Heterojunction can efficiently catalyze the production of reactive oxygen species (ROS) under near-infrared light irradiation, achieving antibacterial function. The TiO2 / W 18 O 49 Heterojunction functionalized titanium alloy material surface, the irregular sheet structure of TiO2 Nanometer sheet can greatly increase the contact area of the material surface and the surrounding solution, and the W 18 O 49 Quantum dots have the characteristics of "single-atom-like catalysis", which can improve the ROS yield and further endow the medical titanium alloy surface with strong photodynamic antibacterial performance.

The invention discloses a composite waterproof wall surface construction method, structure and construction device, and relates to the technical field of constructional engineering waterproofing, and the method comprises the steps that a crack distribution thermodynamic diagram of a wall surface base layer is obtained; based on the crack distribution thermodynamic diagram, nanometer modified polymer cement mortar is laid to construct a base layer reinforcing layer; paving an intelligent polymer self-adhesive film coiled material on the base layer enhancement layer to construct a waterproof main layer; the waterproof main layer is coated with sealant to form a sealing reinforcing layer; and a photocatalytic coating is sprayed on the sealing reinforcing layer to form a protective surface layer. The multi-layer composite waterproof structure is constructed, the waterproof performance, durability and environmental protection performance are considered, the compressive strength is improved through the nano-modified mortar, the temperature-sensitive self-adhesion coiled material adapts to the more severe temperature, automatic construction equipment is adopted, manual errors are reduced, and materials and the technology are optimized so as to cover more scene requirements.

The utility model discloses an assembly type wave anode aluminum plate wall surface design structure capable of avoiding echoes, which comprises a base layer framework, long supporting square pipes and short supporting square pipes, a flange is arranged on the opposite side of the inner anodized aluminum plate, an aluminum plate connecting piece is arranged in the middle of the flange, a folded edge is arranged on one side of the aluminum plate connecting piece, and the side end face of the inner anodized aluminum plate abuts against the long supporting square pipe; the square tube is fixedly installed at the end of the long supporting square tube, the square tube is perpendicular to the ground, and aluminum plate fixing and supporting pieces are symmetrically arranged on the two sides of the square tube; the end part of the outer anodic aluminum oxide plate is fixedly arranged on the aluminum plate fixing and supporting piece; the partition keel is fixedly mounted on the back of the base framework, and a gypsum board layer is arranged on the surface of the partition keel. Compared with the prior art, the utility model solves the problems that the modeling is not easy to control, the installation efficiency is low and echoes exist in the construction process of the conventional wave-shaped anode aluminum plate wall surface.

The invention discloses an integrated beam surface vibrating, leveling and troweling device and a working method thereof, and relates to the technical field of beam surface construction.The integrated beam surface vibrating, leveling and troweling device comprises a truss, a walking mechanism is arranged at the bottom of the truss, a leveling mechanism and a troweling mechanism are arranged on the two sides of the inner wall of the truss correspondingly, and the leveling mechanism comprises a leveling mounting frame; a leveling compression roller is rotationally mounted on the inner wall of the leveling mounting frame; the troweling mechanism comprises a troweling frame, an adjusting motor is fixedly mounted on the inner wall of the troweling frame, an adjusting frame is fixedly connected to the output end of the adjusting motor, and a troweling plate is fixedly connected to the middle of the adjusting frame; the leveling mechanism, the troweling mechanism and the vibrating rod are combined and integrally arranged, so that leveling, troweling and vibrating operations on a beam surface can be completed by one piece of equipment, reciprocating disassembly and assembly operations among different pieces of equipment are not needed, the construction time is effectively saved, and manpower consumption is reduced.

The application discloses a novel anti-cavitation surface structure and a preparation method thereof. The anti-cavitation surface structure can change the wetting degree of a material surface, reduce gas nuclei near a liquid-solid contact surface, inhibit cavitation and cavitation erosion processes, and also reduce the damage of micro-jets to the material in the cavitation erosion process. The anti-cavitation surface structure layer is composed of a surface construction layer and a substrate. The working mechanism is as follows: firstly, the construction can change the wetting degree of the material surface, so that the gas nuclei near the liquid-solid contact surface are reduced, thereby slowing down the cavitation and cavitation erosion processes; secondly, the incident kinetic energy of the micro-jets in the effective construction area is consumed in the form of friction, thereby reducing the damage of the micro-jets to the material substrate. The application can effectively slow down the cavitation erosion process, weaken the influence of the micro-jets on the material substrate in the cavitation erosion process, and effectively resist the damage of the cavitation erosion to the material surface.

The present application relates to the field of data processing technology, and relates to an ecological safety pattern construction system based on a minimum cumulative resistance model, which comprises an ecological data preprocessing and source extraction module, a resistance factor extraction module, a dynamic resistance surface construction module, a cumulative resistance evaluation module, a key ecological element identification module and a safety pattern generation module, and is characterized in that: the ecological source data in a target region is subjected to feature density statistics to obtain an ecological source distribution map; the ecological source distribution map is subjected to inhibition influence analysis to obtain resistance factors; the resistance factors are subjected to spatial data superposition to obtain a dynamic resistance surface; the ecological source distribution map is subjected to spatial diffusion resistance cumulative evaluation to obtain a cumulative resistance surface; the cumulative resistance surface is subjected to key ecological element analysis to obtain ecological corridors and ecological nodes; and the ecological safety pattern of the target region is constructed according to the ecological corridors and the ecological nodes; and the present application can improve the efficiency of the ecological safety pattern construction based on the minimum cumulative resistance model.

The utility model relates to wall surface construction tool technical field, and more specifically, relate to a kind of scaffold for house construction, comprising: underframe, it is equipped with at least X mounting surface, and at least Y mounting surface is equipped with sliding slot, X is integer greater than or equal to 4, Y is integer greater than or equal to 3, and X-Y is greater than or equal to 1;Several support leg assemblies, the number is equal to the number of sliding slot, respectively slidably set at each sliding slot, the support leg assembly is used to improve the support stability of the underframe;Multiple side frames, the number is equal to the number of mounting surface of the underframe, respectively detachably set on each mounting surface of the underframe;Connecting frame, set on the upper side of each side frame;Safety frame, set on the upper side of the connecting frame.The scaffold for house construction of the utility model aims at solving the problem that the scaffold cannot keep stability in prior art under the premise of close to wall surface.