9900results about "Building repairs" patented technology

A digital auxiliary repair method for an ancient building. The method comprises: point cloud data acquisition, point cloud model establishment, point cloud model optimization and model printing, which involve: scanning and photographing a damaged ancient building by using a three-dimensional scanner and an industrial camera, so as to obtain three-dimensional point cloud data of the ancient building; performing preprocessing, such as data registration, data denoising, data simplification and data segmentation, on the point cloud data to obtain data for establishing a three-dimensional model; optimizing the three-dimensional model; and by means of a 3D printer, obtaining a mold for a damage position of the ancient building, and on the basis of requirements, using the mold to perform molding to obtain a wooden or brick-mixed workpiece.

The invention discloses a multi-element historic building maintenance and restoration method based on three-dimensional laser scanning, and relates to the technical field of computer processing, and the method comprises the following steps: S01, obtaining the three-dimensional point cloud data of a historic building foundation through a ground laser scanner, the basic three-dimensional point cloud data comprises geometric information of a building facade, a ground structure and a near-ground decoration component; s02, an unmanned aerial vehicle carries a multi-line laser scanning device to scan the top and the high-altitude structure of the building, supplementary point cloud data is generated, and the millimeter-level precision three-dimensional coordinates of the pitched roof, the tower eave and the cornice bracket are covered with the supplementary point cloud data; and S03, synchronously acquiring surface texture data of the historic building by adopting multispectral imaging equipment. According to the method, the millimeter-level precision of three-dimensional reconstruction of the historic building is realized through multi-source data fusion and a hierarchical optimization algorithm, and the maintenance decision efficiency is improved by combining automatic disease recognition and a multi-modal analysis technology.

The invention provides a house waterproof maintenance system based on an intelligent detection and self-repairing technology, and the system comprises an intelligent sensing layer which is used for collecting multi-dimensional physical parameters of building waterproof key nodes in real time; the edge calculation analysis layer is used for performing fusion analysis and risk prediction on the perception data; the dynamic self-repairing execution layer is used for triggering a multi-stage repairing mechanism according to an analysis result; the cloud management layer is used for realizing visual management and control and strategy optimization of the whole system, and relates to the technical field of building waterproofing, the building state is monitored in real time through a multi-mode sensing network, water leakage risk prediction is realized in combination with an edge calculation algorithm, and collaborative repair of a microcapsule repair agent, a shape memory alloy grid and an electrodialysis module is triggered; the system remarkably improves the timeliness and reliability of waterproof maintenance, reduces the manual intervention cost, and is suitable for intelligent maintenance of residential buildings, industrial buildings and historical protection buildings.

The invention belongs to the technical field of viaduct renewal, and discloses water jet forcible entry equipment and a forcible entry method.The equipment comprises a main body structure, an auxiliary supporting structure, a spray head structure and a control structure, the main body structure is movably arranged on the road surface, and the auxiliary supporting structure is arranged on the side, away from an anti-collision wall, of the main body structure; the supporting rods are driven to rotate through stretching and retracting of the linear driving mechanism, so that the auxiliary supporting wheels abut against the ground, anti-toppling supporting force is provided for the main body structure, the situation that the equipment topples due to the counter-acting force of water flow is avoided, the stability of the whole equipment in the moving process is ensured, and the operation danger is reduced. The spray head structure comprises a mounting base and a spray head, the mounting base is movably arranged at the end of the main body structure, and the spray head is rotatably arranged on the mounting base so as to achieve multi-angle forcible entry of the anti-collision wall. The control structure is arranged on the main body structure and can control movement of the main body structure, movement of the mounting base and rotation, start and stop of the spray head, and intelligent operation is achieved.

The invention relates to the field of constructional engineering concrete detection, in particular to a reamer bit and a concrete repairing method.The reamer bit comprises a mounting base, at least two drill arms and at least two supporting rods; one end of the drill arm is hinged with the mounting seat, a fixing pipe is arranged between the hinge points of the drill arm and the mounting seat, the fixing pipe is connected with a positioning rod in a sliding manner, one end of the supporting rod is hinged with the positioning rod, and the other end of the supporting rod is hinged with the drill arm. When the reamer bit is used, the angle of the drill arm can be flexibly adjusted by pressing the positioning rod, the hole diameter of a reaming hole can be accurately controlled according to actual repairing requirements, and the reamer bit is suitable for repairing scenes of coring holes of different sizes and depths; the formed horn mouth with the wide inside and the narrow outside can be embedded into original concrete like a tenon after concrete is poured, the combining capacity of new concrete and old concrete is greatly improved, and it is guaranteed that a repaired area is not prone to separation.

The invention discloses an old wind power plant fan foundation small-to-large capacity increasing structure and a transformation construction method. The old wind power plant fan foundation small-to-large capacity increasing structure comprises an original fan foundation, a newly-poured reinforced concrete foundation, a vertical anchor bolt cage connecting system and a radial anchor bolt connecting system. The connecting structure of the bottom section of the new fan tower drum and the new fan foundation comprises a vertical anchor bolt cage connecting system and a radial anchor bolt connecting system. The vertical anchor bolt cage connecting system is fixed in the original fan foundation, and the radial anchor bolt connecting system is fixed in the newly-poured reinforced concrete foundation. According to the new fan foundation, the diameter of the middle pier is expanded so as to arrange a new tower tube, the height of the middle pier is not changed, the height of the middle pier of the newly-poured foundation almost does not need to be increased, and the using amount of concrete is greatly reduced. Meanwhile, according to the structure, an original vertical anchor bolt cage connecting system is reserved, a radial anchor bolt connecting system is adopted for enhancing connection between the bottom section of the fresh air fan tower barrel and the fan foundation, the transformation cost and the connection reliability are effectively controlled, and the maximization of reutilization of the original fan foundation and the controllability of the cost of the fresh air fan foundation are achieved.

The invention discloses a movable wall reinforcing device, and relates to the technical field of constructional engineering wall reinforcing equipment.The technical scheme is that the movable wall reinforcing device comprises reinforcing equipment, the reinforcing equipment comprises a supporting folding device, a reinforcing assembly and a bottom plate assembly, and the top face of the bottom plate assembly is connected with the bottom face of the supporting folding device; the bottom of the reinforcing assembly is located above one side of the top face of the bottom plate assembly, and the supporting and folding device comprises a sliding groove base, a hydraulic rod, a connecting block, a lifting assembly, a guide connecting frame, a threaded rod and a limiting ring. The wall reinforcing device has the beneficial effects that the connecting block at the top of the sliding groove base is connected with the bottom end of the hydraulic rod, so that the angle of the hydraulic rod can be adjusted to meet different wall reinforcing requirements; a worker can adjust the number of the supporting folding devices installed on the sliding strip columns according to the pressure bearing capacity of the wall, and maximum efficiency adaptation of supporting force is achieved. The labor cost and the material cost can be reduced, and the construction efficiency is improved.

The invention relates to a newly-built concrete electric pole prestress reinforcing device, and belongs to the technical field of power transmission line engineering, the newly-built concrete electric pole prestress reinforcing device comprises an electric pole body, a prestress assembly is installed on the electric pole body, the prestress assembly comprises a connecting hoop and an adjusting assembly, and the connecting hoop is installed at the top end of the adjusting assembly; the adjusting assembly comprises four hinge rods which are sequentially connected end to end to form a parallelogram structure and arranged outside the electric pole body in a sleeving mode, a hinge piece is installed at the connecting position of any two connected hinge rods, and the ends of the hinge rods and the hinge pieces are installed in a hinged mode. A pair of pulleys installed on the electric pole body is further arranged between the connecting hoop and the adjusting assembly, the two U-shaped connecting blocks are both connected with steel twisted ropes, and the free ends of the steel twisted ropes penetrate through the through holes, bypass the pulleys and then are fixedly connected with the connecting hoop. Tensioning and applying of prestress can be achieved, the strength and the anti-overturning capacity of the concrete electric pole are effectively improved, and the service life of the concrete electric pole is effectively prolonged.

The invention relates to the technical field of concrete structure repairing, in particular to a repairing system of a reinforced concrete column based on triple cooperative constraint, which comprises a core area concrete column formed by removing a failed concrete protection layer from a rusted reinforced concrete column; the longitudinal bars are arranged on the peripheral side of the core area concrete column; the four-corner star-shaped stirrups are hooped on the outer side of the core area concrete column at intervals in the axial direction of the core area concrete column and are fixed to the longitudinal bars; the anti-stress pieces are arranged at the four corners of the core area concrete column and fixedly connected with the four corner ends of the four-corner star-shaped stirrups; and the FRP grid-ECC composite sandwich structure is arranged on the outer side of the core area concrete column. According to the method, through a material performance complementation and interface stress coordination mechanism, the purpose of multi-target collaborative optimization of axial compression-bending shear coupling bearing capacity reconstruction, interface durability improvement, secondary corrosion inhibition and the like of the repaired concrete column is achieved. The invention further correspondingly discloses a construction method of the repairing system.

The invention relates to the technical field of biomineralization, and particularly discloses an alkali-resistant urease-producing microbial flora for biomineralization of construction joints and a preparation method of the alkali-resistant urease-producing microbial flora. The microbial flora disclosed by the invention is prepared from the following strains with relative abundance: 4.4 to 5.2 percent of bacillus, 0.39 to 0.46 percent of enterococcus, 4.8 to 5.7 percent of alcaligenes, 0.50 to 0.58 percent of cellulomonas, 22.4 to 24.2 percent of lysobacter, 1.7 to 2.4 percent of pseudomonas, 10.8 to 11.9 percent of Savagea, 15.1 to 16.2 percent of sarcina, 30.8 to 32.2 percent of chloridomonas and 0.41 to 0.48 percent of bacillus. The alkali-resistant microbial compound flora with high urease activity in the limited oxygen and normal environment can effectively overcome the defects that urease microorganisms are low in mineralization efficiency under the anoxic condition, and the strength of an obtained consolidated body is not high.

To provide a method for replacing web members of steel towers and a device for replacing web members of steel towers that can reinforce the range of web member replacement and replace the web members even when the work for replacing web members of steel towers takes several days or the stress borne by reinforcement materials is large.SOLUTION: A device for replacing web members of steel towers comprises upper and lower horizontal reinforcement members that are attached between main pillar members near above and below the range of web member replacement; and temporary reinforcement members that are attached to be inclined from a fixing point of the upper horizontal reinforcement member of one main pillar member to a fixing point of the lower horizontal reinforcement member of the other main pillar member, the temporary reinforcement member is divided into first and second temporary members, the first and second temporary members are arranged with flange joints provided at one end facing each other with a predetermined gap, and the flange joints are connected with connecting bolts to introduce a predetermined axial stress into the first and second temporary members according to the amount of fastening, and an adjustment plate is inserted between the flange joints and fixed with fastening parts.SELECTED DRAWING: Figure 1

The invention discloses a farm wall reinforcing device. Farm wall reinforcing equipment comprises an adjusting sliding frame, an even number of reinforcing devices are installed on the adjusting sliding frame, protective cover baffles are installed on the surfaces of the reinforcing devices, pouring mold clamping plates are arranged in the reinforcing devices, inner grooves are formed in the upper portions of the pouring mold clamping plates, and an even number of steel bar fixing frames are arranged between the inner grooves. A turnover sealing cover which is movably hinged is installed on the inner groove, a fixing steel bar is installed in the steel bar fixing frame, and an on-plate clamping groove is formed in the surface of the pouring mold clamping plate. The adjusting sliding frame is installed at the position of the root of a wall needing to be reinforced, then the reinforcing devices are installed on the adjusting sliding frame in a back-to-back mode, the reinforcing devices clamp the wall in a butt mode, then the threaded anchor rods are sequentially inserted into the pouring mold clamping plates in a matched mode to form opposite pulling, and the threaded anchor rods are clamped and fastened; and finally, after a wall inserting fixing rod, a wall body connecting clamp and a fixing steel bar are inserted, concrete is poured into a guiding and conveying groove, the concrete and the wall body are combined and solidified, and the reinforcing work of the wall body is completed.

The invention provides a multifunctional cleaning device of a curtain wall cleaning unmanned aerial vehicle and a cleaning method. The multifunctional cleaning device comprises a cleaning assembly, and the cleaning assembly comprises a machine shell, a supporting arm, an L-shaped connecting rod and a small motor. A water pump and a pressure pump are started at the same time to spray water added with a cleaning agent to the curtain wall so as to wash the curtain wall, a small motor is started to drive a six-edge connecting rod to rotate so as to drive cleaning cotton to rotate, the unmanned aerial vehicle is remotely controlled to get close to the glass curtain wall, and the cleaning cotton and water scraping cotton are attached to the curtain wall at the same time; the sprayed curtain wall is cleaned from top to bottom through the rotating cleaning cotton, water of the cleaned curtain wall is scraped off through the water scraping cotton above the cleaning cotton, watermarks are left after the water is dried, a cleaning worker does not need to hang the curtain wall in front of a lifting platform or a lifting rope to manually scrub the curtain wall, time and labor are saved, and the cleaning efficiency is improved. And the cleaning cost is low, cleaning is safe, high-altitude operation is not needed, and the life safety of workers is guaranteed.

The invention relates to the field of leakage repairing equipment, in particular to a leaking stoppage device and method for underground structure leakage water governing The leaking stoppage device comprises a lifting platform, a grouting machine is fixedly mounted on the peripheral side of the lifting platform, a grouting head is connected to the grouting machine through a pipeline, and a mounting plate is mounted on the top side of the lifting platform; electric drill bodies are sequentially arranged on the mounting plate away from the lifting platform, a moving mechanism is mounted between the electric drill bodies and the mounting plate, the moving mechanism is used for driving the electric drill bodies to be close to or away from the mounting plate, and a mounting seat is fixedly mounted on the side, away from the mounting plate, of each electric drill body; the electric drill body is provided with a drill rod and a plurality of grouting nails, the mounting seat is provided with a first magnetic attraction groove, the mounting plate is provided with a switching mechanism, and the switching mechanism is used for selectively placing the grouting head, the drill rod and the grouting nails into the first magnetic attraction groove. The method has the effect of reducing the repairing difficulty.

The utility model relates to a node reinforcing device suitable for installing a photovoltaic support on an existing bolt-sphere grid structure, which comprises a bolt sphere, a photovoltaic support stand column is fixedly arranged on the top surface of the bolt sphere, a plurality of upper chords are uniformly distributed on the circumference of the middle surface of the bolt sphere, and a plurality of web members are uniformly distributed on the circumference of the bottom surface of the bolt sphere. The photovoltaic support stand columns are connected with the upper chords through the first supporting rods, every two adjacent upper chords are connected through the second supporting rods, every two adjacent web members are connected through the third supporting rods, and the web members are connected with the second supporting rods through the fourth supporting rods. According to the utility model, the supporting rod I, the supporting rod II, the supporting rod III and the supporting rod IV are used for reinforcing and supporting the nodes of the existing bolt-sphere net rack for installing the photovoltaic bracket, so that the bearing capacity of the existing bolt-sphere net rack can be improved.

The utility model relates to the technical field of bolt-sphere net racks, in particular to a bolt-sphere net rack pull rod node reinforcing device which comprises a bolt-sphere body, a pull rod is connected to the outer surface of the bolt-sphere body in an embedded mode, a connecting frame is fixedly installed on the outer surface of the pull rod, and the bolt-sphere net rack pull rod node reinforcing device comprises a bolt-sphere body. The spring is fixedly connected to the inner wall of the connecting frame, a limiting frame is fixedly installed at the top of the spring, a circle of U-shaped plates arranged at equal intervals are connected to the interior of the limiting frame in an embedded mode, and the fixing plate is fixedly connected to the bottoms of the U-shaped plates. Through the arrangement of the limiting frame, the springs, the fixing plates, the pull rod and the U-shaped plate, the multiple fixing plates can be rapidly installed on the pull rod, so that the difficulty of high-altitude reinforcing operation is reduced, the reinforcing efficiency is improved, in addition, the fixing plates, the fastening bolts and the nuts are arranged, the multiple fixing plates are connected together, the bolt-sphere net rack is more stable, and the service life of the bolt-sphere net rack is prolonged. And the device is safer.

The invention discloses a mooring type high-pressure six-axis curtain wall cleaning unmanned aerial vehicle, and belongs to the technical field of curtain wall cleaning equipment. The water storage bin is vertically mounted below the center of the six-axis unmanned aerial vehicle, and a transfer pipe is mounted below the water storage bin; the high-definition camera is mounted above the fuselage of the six-axis unmanned aerial vehicle; the flushing device is fixed below the fuselage of the six-axis unmanned aerial vehicle, and the flushing device is communicated with the water storage bin; the atomizing and foam throwing unit is installed below the six-axis unmanned aerial vehicle and located on one side of the water storage bin, and an integrated water bin is fixed to one side of the flushing device; a six-axis unmanned aerial vehicle is adopted as the main rack layout, the atomization foam throwing angle can be automatically adjusted through the mainly-arranged atomization foam throwing unit, a foam water agent is evenly sprayed in a large area or centrifugally thrown out in a high-strength mode through a foam throwing disc, and stains on the surface of a curtain wall are flushed; the flushing device can linearly spray out high-pressure water through an alloy direct spray rod, and the efficient cleaning effect on the curtain wall is achieved.

The utility model relates to the technical field of sunlight rooms, in particular to a movable sunlight room. The movable sunlight room comprises a track and two sets of telescopic arch assemblies oppositely arranged at the two ends of the track. For any telescopic arch-shaped assembly, the telescopic arch-shaped assembly comprises a fixed arch-shaped unit and a movable arch-shaped unit, the fixed arch-shaped unit is fixedly arranged at the end of the track, and the movable arch-shaped unit is arranged outside the fixed arch-shaped unit in a sleeving mode and is in sliding connection with the track; the two movable arch units can slide oppositely along the track until the opposite ends of the two movable arch units abut against each other, and the other ends of the two movable arch units are connected with the corresponding fixed arch units in an adjacent mode respectively. A'side wall + top 'omnibearing ventilation mode can be provided, so that the permeability of the sunlight room is improved.

The invention provides a reinforcing beam reinforced by adopting an out-of-service wind power blade and a method for determining the bending rigidity. According to the reinforcing beam, a plurality of grooves are formed in at least one surface of a reinforced concrete beam; the reinforcing layer comprises reinforcing ribs and a cement-based composite matrix, a plurality of protrusions are arranged on the surface of the cement-based composite matrix, the protrusions are arranged at intervals in the length direction of the cement-based composite matrix, and the protrusions are correspondingly embedded into the grooves, so that the reinforcing layer is connected with the reinforced concrete beam to obtain a reinforced concrete reinforced beam; wherein the reinforcing ribs are obtained by disassembling and cutting a main beam of the retired wind power blade. According to the reinforcing beam, the combining capacity of the reinforced concrete beam and the reinforcing layer is high, mutual slippage is avoided, the retired wind power blade composite material resources are utilized, the environment is protected, and the cost is saved while high-performance reinforcing treatment can be conducted on the damaged reinforced concrete beam structure or the reinforced concrete beam structure with insufficient bearing capacity.

The invention discloses an original village building repairing method and system based on 3D printing, and relates to the field of ancient building repairing, the method comprises the steps that a to-be-repaired building is scanned, a numerical model of the to-be-repaired building is obtained, and the numerical model comprises the appearance, the internal structure and the specific condition of a damaged part of the building; based on the original materials and environmental conditions of the building to be repaired, 3D printing materials are selected, and the 3D printing materials have physical characteristics and chemical characteristics similar to those of the building materials to be repaired and are used for ensuring the compatibility of the repaired part and the original building; designing a repair scheme based on the constructed numerical model; the repair scheme comprises a complete replacement part and a reinforcement repair part; and based on the repairing scheme, a repairing component is printed and installed on the to-be-repaired building.

The invention relates to an intelligent permeation grouting process and device for concrete crack self-repairing. The intelligent permeation grouting process and device are suitable for crack detection and repairing of a newly-built concrete structure. The device comprises a blood vessel network embedded into concrete, a crack detection sensor, a control module, a pumping module and a self-repairing material storage module, and automatic detection and repairing of cracks are achieved. The technological process comprises crack detection, data analysis, grouting parameter determination, material injection and repair monitoring. Through the automation and intelligence technology, the repairing efficiency and precision are remarkably improved, and the device is suitable for large structures such as bridges and tunnels.

The invention discloses an anti-seismic strengthening method and system suitable for historical buildings, and relates to the technical field of existing building strengthening. The invention discloses an anti-seismic reinforcement system suitable for historical buildings. The anti-seismic reinforcement system comprises a data modeling module, a risk assessment module, a disturbance analysis module, a buffer decision module, a reinforcement early warning module, a component reinforcement decision module, a collaborative reinforcement decision module and a scheduling optimization module. According to the method, the linkage stress relation and the collaborative response characteristics are identified by establishing the structure coupling model of the adjacent buildings and a strength correlation analysis method, and a theoretical basis and a judgment standard are provided for collaborative reinforcement of cross-building units; the collaborative reinforcement strategy is generated according to the linkage requirement, the collaborative mode and the deployment position are defined, and the overall coordination of the community-level reinforcement scheme and the linkage toughness of the structural system are enhanced.

To provide a mechanism to reinforce a hollow columnar object more easily.SOLUTION: A reinforcing member for a hollow columnar object comprises: a hollow columnar bag-like sheet; a push-in rod for inserting the bag-like sheet into the hollow columnar object; an expansive fixing body that is disposed on one end of the bag-like sheet and fixes the bag-like sheet to the inside of the hollow columnar object by expanding; and a connection member to detachably connect the expansive fixing body and a tip of the push-in rod.SELECTED DRAWING: Figure 5

The utility model discloses a reinforcing device, which relates to the technical field of structural engineering, and comprises a reinforcing plate, fixed end anchorage devices and a midspan back shore mechanism, the two ends of the reinforcing plate are respectively connected with a reinforced member through the fixed end anchorage devices, the middle part of the reinforcing plate is connected with the reinforced member through the midspan back shore mechanism, and the middle part of the reinforcing plate is connected with the reinforced member through the midspan back shore mechanism. The midspan jacking mechanism is used for conducting prestress tensioning on the reinforcing plate. The reinforcing device is simple in structure, high in operability and capable of improving the ultimate strength and ductility of a reinforced component.

The invention discloses a photovoltaic mounting bracket for a roof photovoltaic power generation panel, and relates to the technical field of photovoltaic power generation panel mounting brackets, the photovoltaic mounting bracket comprises two photovoltaic mounting brackets, the periphery of each photovoltaic mounting bracket is provided with at least four fixing screws, and the two photovoltaic mounting brackets are jointly provided with a cross brace fixing assembly. The transverse support fixing assembly comprises an L-shaped rotating rod and a square rotating rod, the L-shaped rotating rod and the square rotating rod are rotationally connected to the sides, close to each other, of the two photovoltaic mounting supports respectively, a tightening groove is formed in the L-shaped rotating rod, and the bottom of the L-shaped rotating rod is sleeved with a sealing protection plate; an L-shaped rotating rod and a square rotating rod form a whole, and the L-shaped rotating rod, the square rotating rod and the roof are fixed through bonding of polystyrene foam, so that the problem that an existing connecting rod is suspended and cannot be fixed to the roof is solved, the situation that a photovoltaic power generation panel shakes in strong wind or rainstorm weather due to suspension of the connecting rod is avoided, and the service life of the photovoltaic power generation panel is prolonged. And the stability of the photovoltaic power generation panel in the use process is ensured.

The invention relates to the technical field of building construction, in particular to a building construction crack reinforcing device which comprises a plate body, an operation hole is formed in the upper end of the plate body and penetrates through the upper end and the lower end of the plate body, a sliding groove is formed in the lower end of the plate body in the left-right direction, and L-shaped sliding plates are slidably connected to the left side and the right side of the plate body through the sliding groove; the two sliding plates are combined together in a sliding mode, then the lower ends of the two sliding plates are inserted into the crack, the sliding plates are pushed towards the two sides, the lower ends of the sliding plates abut against the inner walls of the two sides of the crack respectively, the fixing part is inserted between the lower ends of the two sliding plates, and the two rotating plates are rotated to the left side and the right side of the other crack and fixed. The left end and the right end of the opposite-pull screw penetrate through the opposite-pull holes in the two butt joint plates correspondingly and are in threaded connection with the adjusting nuts, the two butt joint plates are fixed, the two rotating plates are further fixed, fixing of the crack is enhanced, then slurry is injected into the crack for repairing, and the irregular crack can be fixed.

The utility model relates to the field of shell supports, in particular to an adjustable elastic support which comprises a support body, a jacking mechanism arranged on the support body and a support body slidably connected to the top of the support body through the jacking mechanism. The jacking mechanism comprises a positioning assembly arranged on the supporting body and an elastic piece arranged between the positioning assembly and the supporting body, the positioning assembly is used for adjusting the height of the bottom end of the elastic piece, and the supporting body is connected with the vault. The height of the bottom end of the elastic piece is adjusted through the positioning assembly, the elastic piece is compressed, the upper end of the elastic piece is static due to the fact that the elastic piece is connected with the jacking body, when the elastic piece is compressed to the preset length, the jacking force can be known by observing the upward moving distance of the lower end of the elastic piece, and accurate control is facilitated.

The utility model relates to the technical field of added elevator connection construction, in particular to an added elevator corridor beam end connecting device for an existing building, the existing building comprises a rest platform and a ring beam located on the rest platform, and further comprises a corridor beam, an upper steel gasket and a lower steel gasket, and the lower steel gasket is arranged at the bottom of the ring beam in an attached mode. The upper steel gasket is arranged on the upper surface of the rest platform and located above the lower steel gasket. The upper steel gasket and the lower steel gasket are anchored and connected through a plurality of bolts; one end of the corridor beam is hinged to the added elevator, and the other end of the corridor beam is fixedly connected to the upper steel gasket. Under the condition that the ring beam is located on the rest platform and is far away from the outer vertical wall surface, the connecting structure can not damage the original floor slab and platform without partially dismantling the rest platform, so that the safety of the existing building and the connecting strength of the added elevator corridor are guaranteed.

The invention provides a machine vision unmanned aerial vehicle curtain wall cleaning control system and method, and belongs to the field of image processing. The system comprises a pollution area identification module, a visual distance processing module, a distance measurement fusion processing module and a pollution level identification module. Wherein the pollution area identification module is used for acquiring a first pollution area, a second pollution area and a pollution similarity coefficient; the visual distance processing module is used for obtaining a first curtain wall distance; the distance measurement fusion processing module is used for collecting a second curtain wall distance and obtaining a curtain wall distance in combination with the first curtain wall distance; the pollution level identification module is used for obtaining the pollution level and carrying out unmanned aerial vehicle cleaning control. The technical problem of insufficient cleaning control precision caused by inaccurate distance measurement during curtain wall cleaning of the unmanned aerial vehicle in the prior art is solved, and the technical effects of improving the curtain wall distance measurement precision and realizing accurate cleaning control are achieved.

The utility model discloses a net column multi-layer composite repairing wall block for an old outer wall, and relates to the technical field of outer wall repairing. A steel mesh is arranged on the outer side wall of the first composite cement layer, a second composite cement layer is installed on the outer side wall of the steel mesh, a heat preservation structural body is arranged on the outer side wall of the second composite cement layer, a pressure-resistant plate is arranged on the outer side wall of the heat preservation structural body, a decorative coating is arranged on the outer side wall of the pressure-resistant plate, and a waterproof layer is arranged on the outer side wall of the decorative coating. The four threaded sleeve bodies are arranged at the four corners in the first composite cement layer, the steel mesh and the second composite cement layer correspondingly, and one end of each fixed column body is installed in the corresponding threaded sleeve body; according to the utility model, the thermal insulation structural body is adopted to improve the thermal insulation property after repairing, meanwhile, the pressure-resistant plate is adopted to improve the overall strength, the decorative coating is adopted to realize decoration, and the waterproof layer is adopted to improve the waterproof property; according to the repairing wall block, the original old wall body is connected through the fixing column body, the phenomenon that the repairing wall block falls off is not prone to occurring after connection, and the stability after installation can be improved.