303results about How to "Lean structure" patented technology

The invention discloses a high-rise shear wall structure anti-seismic effect evaluation method and system, and particularly relates to the technical field of high-rise shear walls. The method comprises the following steps: accurately collecting low-cycle fatigue parameters, constructing a concrete and steel bar degradation model considering a fatigue effect, applying the model to anti-seismic analysis of a shear wall structure, simulating the influence of main shock and multiple aftershock loading on structural performance, drawing a bearing capacity degradation curve according to multiple loading results, and analyzing a degradation speed abnormal state. The risk that the structural rigidity and the bearing capacity are abnormal is judged by combining the change of the residual rigidity and the bearing capacity, the risk is divided into high, medium and low levels, and proper reinforcement or prevention measures are provided for different risk levels, so that the defect that the material fatigue effect is not fully considered in the existing anti-seismic evaluation is effectively overcome, and the anti-seismic evaluation accuracy is improved. According to the method, the damage accumulation condition of the high-rise shear wall structure in frequent aftershocks can be predicted more accurately, so that the risk of premature failure of the structure is reduced, and the durability and safety of a building in an earthquake are improved.

The invention discloses a liquid cooling dehumidification unit and relates to the field of humidity control, the liquid cooling dehumidification unit comprises a second loop and a bypass branch, a compressor provides power for the second loop, a high-temperature refrigerant of an evaporator is conveyed to a condenser to dissipate heat and cool the outside, and the cooled refrigerant flows back to the evaporator; the bypass branch and the evaporator are arranged in parallel, and the refrigerant cooled by the condenser is divided into two paths to flow through the bypass branch and the evaporator respectively, so that the bypass heat exchanger and the evaporator form low temperature; the bypass heat exchanger and the condenser are arranged side by side, the second loop and the bypass branch share the same fan for heat dissipation, the fan guides airflow to pass through the bypass heat exchanger and the condenser respectively, high-temperature air formed after passing through the condenser is cooled by the bypass heat exchanger, and water vapor carried when the high-temperature air reaches the bypass heat exchanger is condensed into water drops. Condensation and dehumidification are achieved. And the second loop and the bypass branch share the same fan, so that structures and pipelines are reduced, and the space utilization rate is increased.

The invention relates to a fan tower drum, a vibration reduction method of the fan tower drum and a wind driven generator, the fan tower drum comprises a tower drum body and a plurality of vibration reduction assemblies arranged in the tower drum body, one ends of the multiple vibration reduction assemblies are connected with one another, the other ends of the multiple vibration reduction assemblies are circumferentially spaced and are connected to the drum wall of the tower drum body, and each vibration reduction assembly comprises a pipeline, a plurality of damping assemblies and a plurality of damping assemblies, the interior is hollow; the mass ball is movably arranged in the pipeline; and the two elastic parts are oppositely arranged, and the two elastic parts are arranged at the two ends of the pipeline correspondingly, so that when the tower drum body vibrates, the mass ball can reciprocate between the two elastic parts. When the fan tower drum vibrates, the mass ball can move in the pipeline, the mass ball can reciprocate between the two elastic parts through compression and resilience force of the elastic parts, vibration borne by the fan tower drum can be counteracted through multiple buffering motions of the elastic parts, and the stability and safety of the fan tower drum can be improved; and the structural damage and the maintenance cost caused by vibration are reduced.

The invention relates to an adjustable computer heat dissipation device and a heat dissipation method.The adjustable computer heat dissipation device comprises a computer mainframe box, a heat dissipation module, an adjusting module and a controller, the heat dissipation module is fixedly connected with an installation assembly, the heat dissipation module comprises fan blades and cooling fins, the fan blades are electrically connected with a driving part, and the driving part is connected with the installation assembly; the adjusting module comprises a replacement plate, a heat dissipation cavity is formed in the replacement plate, a plurality of air flow pipelines are installed in the heat dissipation cavity, the outer side walls of the air flow pipelines are sleeved with deformable rings, energy storage cavities are formed between the air flow pipelines and the deformable rings, and through holes are formed in one ends of the air flow pipelines; the controller is in signal connection with a monitoring assembly, and the controller adjusts the power of the driving part according to real-time temperature data monitored by the monitoring assembly. Compared with the prior art, the detachable and adjustable design enables the heat dissipation equipment to easily adapt to computer mainframe boxes of different models and specifications, and the heat dissipation performance can be automatically adjusted according to temperature and wind speed data monitored in real time.

The invention relates to the technical field of tunnel construction, in particular to a cast-in-place pile drilling device for tunnel construction and a tunnel construction method.The cast-in-place pile drilling device for tunnel construction comprises a supporting module, a drilling module and a vehicle body, the supporting module is used for supporting and limiting, the drilling module is used for drilling in cast-in-place pile construction and arranged on the supporting module, and the drilling module comprises a sleeve; a first connecting rod is arranged in the sleeve. According to the drilling device, the first connecting rod is arranged in the sleeve, the first connecting rod, the second connecting rod and the third connecting rod can move downwards in sequence, drilling is conducted in sequence through the first drill bit, the second drill bit and the third drill bit, in this way, step-by-step drilling can be conducted according to needs, the drill bits do not need to be replaced during drilling, and rapid drilling of the cast-in-place pile is facilitated; and meanwhile, the first connecting rod, the second connecting rod and the third connecting rod can be retracted into the sleeve, so that the overall length of the drilling module can be reduced, transfer and transportation of the drilling device are facilitated, and meanwhile the height requirement for construction can be lowered.

The invention discloses a hydrogen fuel cell unmanned aerial vehicle with a liquid cooling heat dissipation structure. The hydrogen fuel cell unmanned aerial vehicle comprises an unmanned aerial vehicle body, a hydrogen fuel cell system, a heat dissipation vehicle arm with an inner cavity, a liquid distribution header pipe, a first water pump, a liquid guide downstream pipe, a liquid guide backflow pipe, a propeller, a flow uniformizing mechanism and a liquid collection header pipe. Cooling liquid absorbing heat is evenly distributed to each liquid distribution branch pipe through the liquid distribution header pipe and the flow uniformizing mechanism and then flows into the liquid guide downstream pipe and the liquid guide backflow pipe in the heat dissipation machine arm for heat dissipation, rotor wing wind of a propeller is fully utilized for heat convection heat dissipation, and then the cooling liquid is circulated into a hydrogen fuel cell system through the liquid collection header pipe. Water-cooling heat dissipation is adopted in the whole process, meanwhile, a water-cooling heat dissipation device is combined with the unmanned aerial vehicle frame, the vehicle arms of the unmanned aerial vehicle frame serve as heat dissipation devices, an additional heat dissipation device structure can be omitted, the weight can be reduced, rotor wing wind is fully utilized for heat convection, heat dissipation fan components can be omitted, the weight is reduced, and therefore the heat dissipation effect is guaranteed, and meanwhile the heat dissipation efficiency is improved. And the weight is reduced.

The invention discloses a wheel folding and unfolding mechanism applied to a power-assisted tractor and a using method. The wheel folding and unfolding mechanism comprises a chassis shell. The upper bearing is connected with the chassis shell; the folding device is arranged on the chassis shell; and the wheels are connected with the folding device. An original welding mode is upgraded into a foldable mechanism, rapid folding and storage of the power-assisted tractor are achieved, the storage size of the whole tractor is reduced, and single-person operation is facilitated. When the motor extends, the gear and the rack act to tighten the tractor, when the motor retracts, the wheels are opened, and folding storage of the power-assisted tractor is automatically achieved. And linear motion of the electric cylinder is converted into rotation of folding storage through the gear and the rack, manual operation is not needed, and only one-key folding is needed. The folding storage mechanism has the advantages that the folding storage function of the upper half vehicle and the folding function of the wheels are achieved, the overall storage size is further reduced, carrying and mounting are convenient, and the practicability and portability of the mechanism are improved.

The invention discloses a high-efficiency low-resistance electrostatic spinning multi-layer filtering material for a mask filter element and a preparation method of the high-efficiency low-resistance electrostatic spinning multi-layer filtering material. The method comprises the following steps: firstly, dissolving ODA and PMDA raw materials in a solvent to prepare a first PAA solution; then, preparing the solution into a first bead-like PAA nanofiber membrane by utilizing an electrostatic spinning technology; the preparation method comprises the following steps: preparing a first PAA / ZIF-8 nanofiber layer, dissolving a ZIF-8 raw material in the first PAA / ZIF-8 nanofiber layer, mixing the ZIF-8 raw material with ODA and PMDA to form a second PAA / ZIF-8 solution, superposing second PAA / ZIF-8 nanofiber layers on the first PAA / ZIF-8 nanofiber layer above and below the first PAA / ZIF-8 nanofiber layer through an electrostatic spinning technology, and carrying out thermal imidization treatment to successfully prepare the multi-layer filter material with a ZIF-8 modified PI / bead-like PI / ZIF-8 modified PI structure. The preparation process provided by the invention is simplified and efficient, and the prepared bead-like multilayer filtering material not only has the characteristics of excellent filtering efficiency and low resistance, but also shows huge application potential in the field of air purification.

The invention is applicable to the technical field of knowledge migration, and provides a graph domain adaptive node classification method based on instance learning, which comprises the following steps of: acquiring a source domain data set with a mark and a target domain data set without a mark; the representation of the source domain data set and the representation of the target domain data set are learned through a GNN model, modeling is conducted on the source domain data set and the target domain data set, and embedded vectors of the source domain data set and the target domain data set are obtained; the embedded vectors of the target domain data set are classified through KNN, and target domain category pseudo labels are obtained; performing fine-grained instance contrast learning on embedded vectors of the source domain graph data set and the target domain graph data set; and after classification is finished, displaying a final classification result of the target domain graph data set. According to the method, the defects of an existing graph domain adaptation technology in cross-domain tasks are overcome, and the method has wide applicability and can be applied to graph data analysis tasks in various cross-domain scenes, such as social network analysis, recommendation systems, knowledge graphs and biological networks.

The invention belongs to the field of sulfone polymer materials, and particularly relates to a sulfone polymer with narrow molecular weight distribution and low gel content and a preparation method thereof. The preparation method comprises the following steps: 1) adding an organic bisphenol compound, 4, 4 '-dichlorodiphenyl sulfone, a salt-forming agent and a purified aprotic polar solvent into a reactor, uniformly stirring and mixing the system, then carrying out deoxygenization operation, and controlling the oxygen content in the system to be less than or equal to 100ppm; and 2) after the replacement is completed, introducing inert gas (such as nitrogen) into the system for a long time, and carrying out two-stage heating reaction under the condition to obtain a viscous sulfone polymer solution. The molecular weight distribution of the sulfone polymer is less than 3, and the gel structure content is greater than 0 and less than 3 mol%. The oxygen content in a reaction system is reduced, and generation of polymer free radicals is reduced, so that the gel structure content is controlled, and the linear sulfone polymer material with narrow molecular weight distribution is obtained.

The invention relates to the technical field of silicon-based anode materials, in particular to a method for reducing structural deformation and damage in the circulation process of a silicon-based anode. The preparation method comprises the following steps: adopting Ti < 3 > C < 2 > T < x > MXeneamp; the SGC composite material is used as a silicon-based anode active material; the Ti < 3 > C < 2 > T < x > M < X > eneamp; the preparation method of the SGC composite material comprises the following steps: (1) dispersing nano silicon into phenolic resin, then enabling the nano silicon and graphene oxide to be adsorbed and self-assembled to form gel by utilizing a surface charge adsorption effect, and then performing freeze drying, grinding, carbonization treatment and CVD treatment to obtain the SGC composite material; (2) the surface of the SGC composite material is coated with the Ti < 3 > C < 2 > T < x > MXene nanosheets in a vacuum suction filtration mode, and Ti < 3 > C < 2 > T < x > MXene amp is obtained; the invention discloses an SGC composite material.

The utility model relates to the technical field of hydrogen storage, and particularly discloses a material box type solid hydrogen storage tank which comprises a hydrogen storage tank shell, a hydrogen storage tank hydrogen inlet, a hydrogen storage tank hydrogen outlet, a bottom support, a main water inlet water dividing pipe, a main water outlet water collecting pipe, a circulating water pipe, an internal support, a bottom supporting plate, a hydrogen storage alloy material box and a sealing flange, the internal support is movable and is arranged in the hydrogen storage tank shell by adopting an integrated layered and latticed grating type structure, and the hydrogen storage alloy material boxes are arranged on each layer of bottom supporting plate of the internal support in a layer-by-layer and latticed manner; a circulation heat exchange system is embedded in the internal support and moves along with the internal support. The hydrogen storage alloy is made into a material box type, a movable grating type internal supporting structure is arranged, hydrogen can make full contact with the hydrogen storage alloy unit, the hydrogen absorption and desorption rate is increased, meanwhile, internal details can be conveniently checked during maintenance, the charging time is greatly shortened, and the heat exchange efficiency is also improved through a circulating heat exchange system.

The invention discloses dry and comfortable antibacterial menstrual period pants and a preparation method thereof, and belongs to the technical field of female hygienic products, and the preparation method comprises the following steps: beta-cyclodextrin and sophocarpidine are utilized to form a superfine capsular inclusion compound, the superfine capsular inclusion compound is adsorbed on the surface of macroporous super absorbent resin to form antibacterial composite resin powder, and the antibacterial composite resin powder is sprayed on the surface of a composite aerogel sheet; when meeting blood, the affinity of water molecules to external hydroxyl groups of cyclodextrin is enhanced, so that the binding force of matrine and beta-cyclodextrin is weakened, and matrine is released; the antibacterial composite resin powder expands when encountering water, compresses and promotes the release of the nano antibacterial inclusion compound loaded on the surface, so that the release of the matrine contained in the antibacterial composite resin powder is accelerated, and a rapid and highly-targeted antibacterial effect is realized; the composite aerogel sheet can improve the resilience force of the menstrual period trousers, has an extremely high specific surface area, a nanoscale hole structure and an extremely low heat conductivity coefficient, and can effectively prevent heat transfer and improve air permeability.

The invention discloses a metal 3D printing laser based on topological optimization and a design method, and belongs to the technical field of design methods, the laser is widely applied to the fields of spaceflight exploration, automobiles and the like, and metal 3D printing becomes a hot spot of laser processing and manufacturing due to high speed and low cost. According to a traditional structure design method, when weight reduction is carried out on a structure, materials are removed firstly, then material force is used for checking the strength, and when the materials are removed, the rigidity and vibration stability of the structure under various working conditions cannot be guaranteed, so that the invention provides a multi-working-condition multi-target topological optimization method. The mass of the laser is reduced, the performance of the structure is optimized, and a good effect is achieved.

The invention relates to the technical field of high-pile wharf construction, in particular to a construction method of a high-pile wharf superstructure, which comprises the following steps of: mounting a concrete shell prefabricated part on a pile foundation and pouring concrete in a pouring space on a cast-in-place structure of a high-pile wharf by taking the concrete shell prefabricated part as a template; the concrete shell prefabricated part and cast-in-place concrete form a whole, formwork mounting and dismounting are avoided, the construction efficiency and construction quality of the high-pile wharf are remarkably improved, and the safety risk is reduced; the concrete shell prefabricated member has the characteristics of standardization, industrialization and structural unitization; for a large prefabricated structure, a pouring bottom die of the upper structure of the high-pile wharf can be formed by assembling a plurality of concrete shell prefabricated parts on a pile foundation through block design, so that the requirement of a project for construction equipment is lowered, the site construction difficulty is lowered, the construction period of the project is shortened, and the construction cost is saved.

The invention discloses a double transition metal / chitosan-based carbon aerogel composite material and a preparation method and application thereof.The method comprises the steps that a nitrogen source and transition metal salt are added into a hydrochloric acid solution of chitosan, stirred, dissolved and evenly dispersed to prepare a mixed solution, the mixed solution is subjected to freeze drying, and the double transition metal / chitosan-based carbon aerogel composite material is obtained. Chitosan aerogel containing transition metal and a nitrogen source is prepared; the transition metal salt is any two of ferric salt, cobalt salt and nickel salt; the chitosan aerogel containing the transition metal and the nitrogen source is placed in a methanol solution of 2-methylimidazole, after vibration treatment and drying, the chitosan aerogel is placed in a nitrogen atmosphere to be subjected to heat treatment, and the double-transition-metal / chitosan-based carbon aerogel composite material is prepared. The preparation method is simple and reasonable in design, the prepared material has good specific surface area and porosity, the formed metal-nitrogen double active center effectively improves the adsorption performance of the material, and the material has good catalytic performance.

The invention relates to the technical field of semantic segmentation, in particular to a night semantic segmentation method based on low illumination enhancement and edge optimization, and the method comprises the steps: inputting an image into a low-light enhancement repair network based on the Retinex theory, local contrast enhancement and adaptive feature fusion, obtaining a denoised and enhanced intermediate image, and carrying out the edge optimization of the intermediate image; inputting the intermediate image into a semantic segmentation network to obtain a category distribution diagram of each pixel; inputting a discriminator embedded with a channel attention module according to the category distribution diagram of each pixel, and optimizing a generator composed of a low light enhancement repair network and a semantic segmentation network through a multi-task joint optimization loss function; and inputting a night image to be detected and segmented into the optimized generator, and outputting a segmentation result. By adopting the method, the low-light enhancement repair network is combined with a local contrast enhancement and channel feature fusion mechanism, so that the overall brightness of the image is improved, the details and edge structures of the image are reserved, and the perception capability and robustness of the model are improved.

The invention discloses a suspension arm stress detection method and system used in the hoisting process, and relates to the technical field of equipment testing. According to the method, communication verification before operation is carried out, device verification data is collected, the working state of the device can be evaluated, the fault risk in hoisting operation can be reduced, the accuracy of hoisting data collection is improved, then hoisting load historical data is obtained, comprehensive processing is carried out in combination with the collection device verification data, and the hoisting efficiency is improved. Corresponding pre-operation adjustment is executed according to the comprehensive processing result, more comprehensive data support can be provided for the hoisting operation, the pre-operation adjustment is more accurate, finally, the hoisting operation is executed after the pre-operation adjustment, the hoisting process is synchronously detected and analyzed to obtain a hoisting arm stress comprehensive evaluation index value in the hoisting process, and the hoisting efficiency is improved. And the stress evaluation information of the lifting arm in the lifting process is obtained through analysis, the lifting process is adjusted, the stress state of the lifting arm can be monitored in real time, and abnormal conditions can be found and processed in time.

The invention discloses a manufacturing method of a second type low-smoke halogen-free standard wall cable of a motor train unit, which relates to the technical field of cables and comprises the steps of conductor preparation, insulation extrusion, buffer isolation layer forming, shielding layer manufacturing, reinforced core preparation and installation, sheath extrusion and post-processing. The conductor is prepared by layering and twisting cerium-titanium alloying copper monofilaments and treating the cerium-titanium alloying copper monofilaments through a nano ceramic coating; post-processing detection shows that the cable is small in bending radius, low in electrical and mechanical performance attenuation rate after repeated bending, excellent in electrical performance, mechanical performance, fireproof performance, environmental protection performance and the like, capable of effectively meeting the cable use requirements under complex working conditions of the motor train unit, capable of guaranteeing the operation reliability and safety, capable of improving the comprehensive performance of the cable and wide in application range. The cable is suitable for power and signal transmission in rail transit fields such as motor train units.

The invention belongs to the technical field of high polymer material composite tarpaulin, and particularly relates to tear-resistant PVC (polyvinyl chloride) composite vehicle tarpaulin, equipment, a preparation method and application. The tarpaulin for the vehicle is composed of base cloth and PVC films attached to the two sides of the base cloth through PVC slurry. Wherein the PVC slurry comprises the following materials: 100 parts of PVC paste resin, 90-120 parts of a plasticizer, 4-8 parts of an adhesive, 11-12 parts of a viscosity reducer and 25-35 parts of PVC calcium powder; the thickness of the PVC slurry permeating into the base cloth is less than or equal to 1 / 3 of the thickness of the base cloth. Vehicle tarpaulin manufacturing equipment is improved, the bottom film pressing wheel and the surface film pressing wheel are additionally arranged to improve attachment of a PVC film and a large cylinder, an original padding process is changed into a transfer sizing method by means of the modified transfer sizing wheel set, the sizing gram weight and screen cloth permeation can be reduced, and the production efficiency is improved. The tarpaulin tearing performance is improved; and the tarpaulin has good stripping resistance and the like.

The invention belongs to the technical field of cutting machining, and relates to a cutting simulation blank surface reconstruction method and device and a readable storage medium. Discretizing the tool and the blank to obtain a tool Tri-Dexel model and a blank Tri-Dexel model, and extracting a tool Dexel chain set and a blank Dexel chain set; boolean operation is conducted on the tool Dexcel chain and the blank Dexcel chain, a blank surface voxel model and the cutting condition of the tool Dexcel on all edges of blank surface voxels are obtained, then the state value of all angular points of the blank surface voxels is obtained, and whether the voxels are boundary voxels containing contour surfaces or not is judged; taking the voxel containing the contour surface as a to-be-cut voxel, obtaining a triangular mesh formed by intersection points of the to-be-cut voxel and the contour surface, and calculating vertex coordinates and a normal vector of the triangular mesh; and obtaining a surface grid based on the vertex coordinates and the normal vectors of all the triangular grids so as to perform surface reconstruction on the blank.

The invention relates to the technical field of automobile connectors, in particular to a new energy automobile connector and a connecting structure of the connector. The new energy automobile connector comprises a first connector and a second connector matched with the first connector for use, a connecting plate is arranged on one side of the first connector, and a connecting end is arranged in the connecting plate; a plurality of connecting grooves are formed in the connecting end, an annular groove is formed in the periphery of the face, close to the first connecting head, of the second connecting head, the annular groove is matched with the connecting plate, and a plurality of connecting columns matched with the connecting grooves are arranged on the face, close to the first connecting head, of the second connecting head. Compared with the prior art, the connector is provided with the connecting assembly, so that all parts can be automatically reset and repositioned in the plugging and dismounting process, abrasion and structure looseness are reduced, and the overall service life of the connector is prolonged.

The invention discloses a preparation method of a lithium manganese iron phosphate battery positive electrode material, and belongs to the technical field of battery positive electrode material preparation. The preparation method of the lithium manganese iron phosphate battery positive electrode material comprises the following steps: (1) adding a lithium source, a manganese source, an iron source, a phosphate radical source and polyacrylonitrile into a container, then adding N, N-dimethylformamide as a solvent, stirring under a water bath heating condition to obtain a spinning solution, stirring and mixing the spinning solution with a composite organic matter, and then, carrying out ultrasonic treatment to obtain a precursor solution; carrying out ultrasonic treatment, and then carrying out electrostatic spinning to obtain a positive electrode material precursor; (2) after aging the positive electrode material precursor, transferring the positive electrode material precursor into a tubular furnace for heat treatment to obtain a carbonized positive electrode material; and (3) carrying out ball-milling mixing on the composite carbon nanotube and the carbonized positive electrode material, and pressing to obtain the lithium manganese iron phosphate battery positive electrode material. The positive electrode material prepared by the method has excellent cycle performance, structural stability and rate capability.

The utility model discloses a communication cable cutting device. The communication cable cutting device comprises a cable cutting mechanism and a buffer protection assembly, the buffer protection assembly comprises a cutting knife protection plate, the lower end of the cutting knife protection plate is fixedly connected with a first fixing block through a bolt, and a spring is installed at the lower end of the first fixing block; certain impact force can be generated when the cutting tool cuts the cable, the cutting tool can enter the interior of the cutting edge groove of the cutting tool protection plate to move downwards after completing the cutting action, the impact force of the cutting tool can be further reduced and absorbed, the impact force is absorbed and relieved through compression of fluid, and therefore the cutting tool is protected against damage, and the service life of the cutting tool is prolonged. Damage to the cutting edge of the cutting tool can be reduced and avoided, and stability and machining quality in the cable cutting process are ensured.

The utility model discloses a steel structure building assembly type connecting structure in the technical field of steel structure buildings, which comprises a stand column connecting assembly and a cross beam connecting assembly, the cross beam connecting assembly is arranged on the outer side of the periphery of the stand column connecting assembly, and the stand column connecting assembly comprises a connecting seat and a series connection component which are used for assembling the steel structure building. According to the steel structure building assembly type connecting structure designed in the scheme, by enhancing the mutual connecting capacity between building assemblies, the stand columns can be easily connected in series and spliced, and rapid assembling and disassembling of the structure are achieved; the connecting structure has extremely important practical application value for the current market with increasing building speed demand, through the connecting structure, architects and engineers can flexibly design various steel structure buildings with different forms, and the connecting structure can be widely applied to large-span commercial centers or exhibition halls with complex space structures. All the components can be efficiently realized through the innovative connecting structure.

The utility model discloses a fully-prefabricated floor slab structure applied to a modular building. The fully-prefabricated floor slab structure comprises a floor slab body and a connecting part. Wherein the floor slab body is fixedly arranged at the upper end of a beam mold after being subjected to full-prefabrication or semi-prefabrication pouring molding by regions and is located at the top of the modular box body; the connecting parts are fixedly arranged between the floor slab bodies and on the outer sides of the floor slab bodies; according to the utility model, the floor body is subjected to regional construction in a full-prefabricating or semi-prefabricating manner, so that the construction efficiency and the quality control are improved; the floor slab body can be fixed to the top of the beam formwork through hoisting and located on the top of the modular box body, and rapid mounting and dismounting of the modular building are achieved. And secondly, due to the arrangement of the connecting parts, firm connection is formed between the floor bodies and the outer side connecting beams, the stability and the bearing capacity of the whole structure are improved, the influence of construction on the environment is reduced, the high-altitude operation time is shortened, the construction safety and efficiency are improved, and the construction cost is reduced.

The invention belongs to the technical field of robots, and discloses a decoupling control method and system for a two-degree-of-freedom vibration suppressor of a robot, and the method comprises the steps: analyzing the structural characteristics of a robot system, and designing a decoupling control strategy through a structural invariance principle; coupled vibration of force applied in the X direction in the Y direction and coupled vibration of force applied in the Y direction in the X direction are effectively eliminated. Compared with a traditional vibration control method, the multi-degree-of-freedom vibration suppression method has the advantages that the influence of a pose related mode and a coupling mode of the robot is fully considered, multi-degree-of-freedom vibration suppression can be efficiently realized in real time in a complex load and dynamic environment, and the adaptability and the control precision are relatively high. The technology has wide application prospects in the fields of robot precision machining, assembling, carrying and the like, and the stability, precision and working efficiency of a robot system can be remarkably improved.

The utility model relates to the technical field of vacuum freeze drying equipment, and discloses low-energy-consumption low-temperature vacuum freeze drying equipment which comprises a shell, a drying bin is installed on the front side of the shell, a working chamber is installed on the front side of the shell, and protection assemblies are installed on the right side of the shell and in the working chamber. And the protection assembly comprises a mounting plate, a screw rod, a transmission wheel, a cleaning plate, an exhaust hole, a dustproof net, a mounting net frame and a semiconductor refrigerator. According to the low-energy-consumption low-temperature vacuum freeze drying equipment, the semiconductor cooler and the mounting screen frame are arranged, the semiconductor cooler is used for cooling and refrigerating the mounting screen frame, so that the temperature of mesh holes in the mounting screen frame is low, the temperature of air flowing through the mounting screen frame is reduced, and heat dissipated from the interior of a working chamber is absorbed; the effect of accelerating cooling and heat dissipation of the working chamber is achieved, the structure and energy consumption needed by cooling are greatly reduced, the use cost of a user is reduced, and the energy-saving performance of the vacuum freeze drying equipment is improved.

The utility model relates to the technical field of building construction, in particular to a waterproof structure of a post-cast strip construction joint, which comprises a foundation bed, a reinforcement cage, a water-resistant plate, a water stop strip and a fixing piece, the water-resistant plate is mounted on the foundation bed, a post-cast strip is arranged above the water-resistant plate, and the post-cast strip is distributed along the length direction of the water-resistant plate; the steel reinforcement framework is arranged on the foundation bed, the water stop strips are installed on the two sides of the post-cast strip and are arranged in the length direction of the post-cast strip, and the fixing pieces are used for installing and fixing the water stop strips; according to the waterproof structure of the post-cast strip construction joint, the water stop strips are arranged on the two sides of the post-cast strip, and the fixing pieces are used for fixing, so that water can be effectively prevented from permeating from the construction joint, and the waterproof effect of the post-cast strip construction joint is improved.

The narrow fat groove assembly type subway station middle force transmission structure comprises a first force transmission piece or / and a second force transmission piece, the first force transmission piece is arranged on the side wall and close to the constructed side of the side wall, the second force transmission piece is arranged on the side wall and close to the non-constructed side of the side wall, and the first force transmission piece and the second force transmission piece are suitable for narrow fat grooves. Construction in the narrow fertilizer groove is facilitated, and the effect of transmitting soil pressure in the narrow fertilizer groove can be achieved. The invention further provides a construction method, the construction method is used for construction of the middle force transfer structure of the narrow fat groove assembly type subway station, and the middle force transfer structure of the narrow fat groove assembly type subway station and the construction method are suitable for the narrow fat groove and construction of the assembly type subway station without a boss on the outer side of a contour. The excavation volume of earth and rocks of the foundation pit and the volume of an enclosure structure are reduced, the occupied area of the tense ground surface of a city is reduced, the relocation and transformation workload of pipelines and the relocation workload of existing buildings are reduced, and the construction cost and the construction period are reduced.