777results about How to "Light weight" patented technology

The invention relates to the field of fertilizers, in particular to a macroelement water-soluble fertilizer and a preparation method thereof.The preparation method comprises the steps that a composite biochar material is prepared from biochar, loaded metal modified biochar and an iron metal material, and then the composite biochar material is compounded with tripotassium phosphate, monopotassium phosphate, disodium octoborate tetrahydrate, zinc sulfate monohydrate and the like; the finally prepared fertilizer can realize accurate fertilizer supply, the iron metal organic framework material efficiently converts nitrate nitrogen into ammonium nitrogen and cooperates with a large amount of trace elements such as tripotassium phosphate, the requirements of crops at all stages are met, nutrients in key periods are guaranteed, pores of the composite biochar material adsorb the nutrients, nutrient slow release is realized, root system interpenetration resistance is reduced, stress resistance is enhanced, and the yield of the crops is increased. The soil conditioner has the advantages of simple preparation process, reduction of growth hindrance, optimization of soil aggregates, increase of pores, reduction of volume weight, improvement of ventilation, water permeability and water and fertilizer retention capabilities, substantial agricultural economy energization, substantial yield increase of crops, and wide application prospects.

The invention relates to the technical field of building materials, and particularly discloses high-strength lightweight concrete containing hollow glass beads and a preparation method of the high-strength lightweight concrete. The high-strength lightweight concrete containing the hollow glass beads is prepared from cement, fly ash, carbon fiber grafted hollow glass beads, lightweight sand, deionized water, polypropylene fiber grafted rubber particles and a water reducing agent according to the mass ratio of (58-75): (25-38): (45-65): (20-40): (42-55): (35-55): (5-12) through mixing, mold filling, vibration molding, covering and demolding. The addition amount of the hollow glass beads is strictly controlled, the influence on the overall strength of the concrete is avoided, the density and weight of the concrete are reduced due to the addition of the light sand and the hollow glass beads, the compactness and integrity of the concrete are improved due to the synergistic effect of the two added fibers, and the raw materials have excellent cohesiveness; the concrete can effectively absorb and disperse stress, and has the advantages of excellent strength, light weight, good durability and excellent comprehensive performance.

The invention relates to the technical field, and particularly discloses a nano-modified epoxy building thermal insulation material and a preparation method thereof. The nano modified epoxy building thermal insulation material is prepared from the following raw materials in parts by mass: 80 to 120 parts of Portland cement, 20 to 40 parts of slag powder, 5 to 10 parts of hollow mesoporous silicon dioxide, 0.1 to 1 part of pyrrole, 0.1 to 0.2 part of ammonium persulfate, 5 to 10 parts of nano silicon dioxide, 10 to 15 parts of bisphenol S epoxy resin, 1 to 5 parts of acrylic acid, 1 to 2 parts of polylysine, 0.01 to 0.1 part of catalyst and 1 to 2 parts of curing agent. The concrete is prepared from the following raw materials in parts by weight: 20-30 parts of epoxy resin, 4-8 parts of loaded aerogel, 0.1-1 part of polycarboxylate superplasticizer, 1-4 parts of composite fiber and 0.2-1.25 parts of hydrogen peroxide. The fireproof building material has excellent toughness, can better resist cracking and absorb energy, effectively avoids cracking and damage under the action of thermal stress, and ensures that the building material has a fireproof effect.

The invention provides a bismuth oxide-based epoxy resin composite material with a radiation shielding function as well as a preparation method and application of the bismuth oxide-based epoxy resin composite material. According to the preparation method disclosed by the invention, the bismuth oxide is subjected to surface modification, and after surface grafting modification by the coupling agent, the surface of the bismuth oxide is changed from strong hydrophilicity to strong hydrophobicity, so that the dispersity and interfacial compatibility of the bismuth oxide in an organic medium are remarkably improved. Secondly, preparing the composite material from the modified bismuth oxide, epoxy resin and a curing agent through a mechanical blending-vacuum defoaming combined process. On one hand, bismuth oxide, epoxy resin and a curing agent are uniformly mixed through mechanical blending; on the other hand, bubbles generated in the blending process are removed through vacuum negative pressure. The bismuth oxide in the composite material is uniformly distributed, no bubble exists in the body, and the surface is smooth and complete, so that the composite material has excellent gamma-ray shielding performance and good mechanical property. The process is simple, the yield is high, the product property is stable, and good economic benefits and environmental benefits are achieved.

The invention discloses a robot full-coverage path planning method based on cattle farming movement. The method aims at improving the path coverage efficiency of a robot in a complex environment. According to the method, a two-dimensional plane map of a real environment is obtained and converted into a binary image, and a grid map suitable for the size of a current robot is generated through rasterization processing. And dynamically adjusting a path planning direction according to a main direction and regional characteristics of a map / map region by adopting a motion direction priority judgment method of cattle farming type motion. And when the robot encounters an obstacle and falls into a dead zone, replanning a path by using a backtracking point set construction rule in combination with an A * algorithm, optimizing path selection of the robot for escaping from the dead zone, and ensuring that the robot can cover all reachable areas. The method effectively reduces path overlapping and calculation amount, improves efficiency and coverage rate of path planning, and is especially suitable for environments with complex boundaries and obstacles. The invention further discloses a system and application for implementing the path planning method, and the system and the application have wide application scenes.

The invention provides a cam, a wave generator and a harmonic reducer, the cam comprises a cam body, grooves are formed in the circumferential side face of the cam body, and the grooves are continuously or intermittently distributed in the circumferential direction of the cam body; the length of the cam body in the axial direction is H, the width W of any groove in the axial direction of the cam body meets the condition that W / H is larger than or equal to 0.15 and smaller than or equal to 0.3, and after the cam is matched with the flexible bearing, buffer spaces capable of providing elastic deformation and absorbing vibration are formed in the grooves. According to the harmonic reducer, the cam with the groove and the width meeting the design range is designed and constructed in the peripheral side face, the balance weight of the cam is reduced, the contact area between the cam and the flexible bearing is reduced, in the operation process of the harmonic reducer, a buffer space for providing elastic deformation and absorbing vibration can be formed in the groove with a certain span in the axial direction, and the service life of the harmonic reducer is prolonged. Load distribution of the harmonic reducer in the operation process is more uniform, and high-speed, low-noise and small-vibration operation of the harmonic reducer is facilitated.

The invention discloses a recycled concrete interlayer-corrugated steel plate composite shear wall with recoverable functions. The anti-seismic property of the steel plate-concrete composite shear wall can be improved, but the steel plate-concrete composite shear wall is prone to local buckling or large deformation under the action of large horizontal loads. Frame columns are vertically arranged on a foundation; shear walls are arranged between the frame columns; a self-resetting device and a friction energy consumption device are arranged between the bottom of the shear wall and the foundation; the self-resetting devices are arranged at the bottom of the shear wall and on the two sides of the friction energy dissipation device. The foundation and the frame columns are fixed through column foot connecting pieces, and a lower end plate is arranged in the center of the foundation. Energy is dissipated through deformation of the disc spring, self-resetting is achieved through the self-resetting device after an earthquake, and residual deformation after the earthquake can be reduced; the energy dissipation beam section generates shear deformation due to the displacement difference between the shear wall and the frame column, the beam section dissipates energy through friction and pulls the SMA stranded wires to deform, and structural deformation is restored through elastic restoring force of the SMA stranded wires after an earthquake.

The light-weight lower limb exoskeleton control system comprises a backrest assembly, leg assemblies are arranged on the two sides of the backrest assembly, and each leg assembly comprises a hip joint movement mechanism, a thigh exoskeleton mechanism, a shank exoskeleton mechanism and a foot mechanism which are sequentially arranged from top to bottom; a knee joint energy storage mechanism is connected between the thigh exoskeleton mechanism and the shank exoskeleton mechanism; the knee joint energy storage mechanism comprises an upper mounting seat, a lower mounting seat, a telescopic sleeve and an energy storage spring sleeving the telescopic sleeve; the upper mounting seat is fixedly connected with the thigh exoskeleton mechanism and is connected with the upper end of the telescopic sleeve through a rotating pair; the lower mounting seat is fixedly connected with the shank exoskeleton mechanism and is connected with the lower end of the telescopic sleeve; a plurality of mounting holes are formed in the upper mounting seat, and the elastic strength of the knee joint energy storage mechanism is changed according to the elongation of the energy storage spring when the telescopic sleeve is mounted at different positions. Compared with the prior art, the method has the requirements of light weight and low control complexity.

The invention relates to the technical field of saline-alkali soil improvement, and discloses a saline-alkali soil improvement system and method for combined control of agriculture, forestry, animal husbandry, planting, breeding and breeding, and the saline-alkali soil improvement system for combined control of agriculture, forestry, animal husbandry, planting and breeding comprises a first planting area; a drip irrigation assembly; a water seepage assembly; the drainage channel is arranged below the surface of the saline-alkali soil corresponding to the first planting area; and a first flow guide member. According to the method, salt-tolerant plants are planted in the saline-alkali soil, so that the infiltration capacity of water in the soil can be improved, and absorption and leaching of salt in the soil are promoted; the drip irrigation assembly is adopted to irrigate the salt-tolerant plants, and water molecule movement can bring salt in soil to the deep position of the soil, so that the salt return phenomenon caused by the capillary action of water molecules is avoided; by arranging the water seepage assembly, the movement speed and the conveying effect of saline-alkali water in soil conveyed to the drainage channel can be increased, and infiltration and collection of the saline-alkali water are accelerated; by arranging the drainage channel, saline-alkaline water in the soil can be absorbed and discharged.

The invention discloses a light-weight energy-absorbing polyurethane power battery pouring sealant and a preparation method and application thereof.The preparation method comprises the steps that liquid MDI and polytetrahydrofuran glycol serve as raw materials to prepare an isocyanate-terminated polyurethane prepolymer; the polyurethane power battery pouring sealant is prepared by reacting 1, 4-butanediol through adjusting a chain extension coefficient to generate microcellular foaming polyurethane, and a microcellular structure is formed through the reaction, so that the related performance requirements of light weight, energy absorption and the like of the power battery pouring sealant are met; the polyurethane pouring sealant prepared by the invention has the advantages of light weight, and excellent energy absorption and vibration reduction performance, mechanical property, thermal stability and bonding performance; and the preparation process is simple and controllable, environment-friendly and reliable, the cost is low, the stability and safety of the power battery can be improved, the development of new energy automobiles is promoted, and the environment-friendly requirement is met.

The utility model provides a bridge abutment back roadbed structure which comprises a first graded broken stone hardcore, a first earthwork standard room, a first bidirectional geogrid, a foam light soil layer group, a second bidirectional geogrid, a second graded broken stone hardcore, a second earthwork standard room and a concrete layer group, the first graded broken stone hardcore, the first two-way geogrid, the foam light soil layer group, the second two-way geogrid, the second graded broken stone hardcore and the concrete layer group are sequentially arranged from bottom to top, the first geocell is arranged in the first graded broken stone hardcore, and the second geocell is arranged in the second graded broken stone hardcore. And the second geocell is arranged in the second graded broken stone hardcore. According to the abutment back roadbed structure, the settlement characteristic of the roadbed is improved, the overall stability and the bearing capacity of the roadbed are improved, and the dead weight of the roadbed can be effectively reduced, so that post-construction settlement at the bridge joint is reduced, the stability and the bearing capacity of the roadbed are improved, and the safety and the comfort of driving are ensured.

The invention relates to the field of vibration acceleration measurement, and discloses a two-dimensional fiber grating acceleration sensor and an acceleration measurement method.The sensor comprises a square plane rotating body, bases are arranged at the four corners of the rotating body in a forward extending mode, and each base is provided with a sensing unit; the sensing unit comprises cantilever beams, a mass block and an optical fiber, the fixed ends of the cantilever beams are installed on the base, the movable ends of the cantilever beams are connected with the mass block, and the four cantilever beams are parallel to the four edges of the square respectively; an optical fiber is arranged between the mass block and the base where the mass block is located, and an optical fiber grating is engraved in the middle of the optical fiber. The sensor structure disclosed by the invention has good stability, can reduce the influence of environments such as water flow erosion and the like, is compact in structure, realizes automatic temperature compensation while increasing the sensitivity, can resist Z-direction interference, and is suitable for being mounted in severe environments such as narrow space, high temperature and high pressure, strong electromagnetic interference and the like.

The invention discloses a non-contact coaxial remote water surface oil spill monitoring method and device. The oil spill monitoring device comprises an aircraft and a coaxial optical system arranged on the aircraft. The coaxial optical system comprises a laser emitting mechanism, a telescope mechanism and a reflected signal receiving mechanism. According to the invention, an optical system for oil spill monitoring is optimized, so that the weight of the optical system is reduced, remote monitoring carried by an aircraft is facilitated, the monitoring performance is improved through automatic focusing, and the signal strength is ensured.

The invention relates to the field of soft soil area retaining wall design, and discloses a soft soil area roadbed slope self-anchored light soil retaining wall which comprises a first foundation, a second foundation is placed on the first foundation, and a road surface is laid on the second foundation; the two retaining wall bodies are symmetrically arranged and are piled on the two sides of the first foundation and the two sides of the second foundation; the concentration plate is arranged on the retaining wall main body, and one end of the concentration plate extends into the foundation I and the foundation II; the multiple grids are arranged, the corresponding grids are connected with one another, and the grids are arranged in the second foundation and the retaining wall body. Additional reinforcement treatment on the foundation is reduced, meanwhile, through the combined action of various mechanisms, a good meshing effect can be formed, displacement of soil particles is controlled, and the overall strength and stability of the roadbed and retaining wall structure are improved; the mutual traction effect of the roadbed and the retaining wall is increased, and the anti-overturning and anti-sliding capacity of the retaining wall is improved.

The invention relates to the field of plant growth regulators, in particular to an ultramicro-granulated energy-gathered humic acid composite preparation which is prepared from the following raw materials in parts by weight: 50-80 parts of ultramicro-granulated energy-gathered humic acid, 10-30 parts of nanoscale metal oxide, 5-20 parts of a microbial agent, 1-10 parts of a plant growth regulator and 5-15 parts of a slow release agent. According to the invention, ultrafine particle shaped humic acid, nano-scale metal oxide, a microbial agent, a plant growth regulator and a slow-release agent are organically combined. The effect of the soil conditioner is far better than that of a single component or a traditional soil conditioner.

The invention discloses a lifting and transferring tool for an underwater oil pipe hanger and a hole protection device, and relates to the technical field of underwater Christmas trees, the lifting and transferring tool comprises an outer body, and a plurality of lifting pins are arranged on the side wall of the outer body in the circumferential direction; the inner body is slidably arranged in the outer body and used for enabling the outer end of the lifting pin to extend out of the side wall of the outer body; the bottom of the hanging ring penetrates through the top of the outer body and then is connected with the inner body. A locking piece is arranged at the top of the outer body and used for controlling the height of the inner body in the outer body. According to the lifting and transferring tool for the underwater oil pipe hanger and the hole protection device, when the oil pipe hanger and the hole protection device are lifted and transferred, the locking or unlocking function is achieved through the lifting pin, locking between the outer body and the inner body is achieved through the operation screw, unlocking in the lifting and transferring process is prevented, and the lifting and transferring efficiency is improved. Therefore, the double-locking function is achieved, and the reliability in the lifting and transferring process is enhanced.

The invention provides a special fertilizer for highland barley in Tibet high-altitude areas, which specifically comprises a matrix, a base fertilizer, an organic fertilizer, a trace element fertilizer, a modifier and a nutritional agent in a mass ratio of 100: 50: 100: 1: 15: 3, the substrate comprises loam, river sand and bentonite; the base fertilizer comprises nitrogenous fertilizer, phosphatic fertilizer and potash fertilizer; the organic fertilizer comprises bran, decomposed straw, decomposed excrement, plant ash and aquatic animal powder; the modifier comprises wormcast, silkworm excrement, perlite and vermiculite; the nutritional agent comprises compound vitamins, glucose, honey and compound amino acids; the raw materials used in the method are green, safe and pollution-free, the soil structure is improved while nutrient substances needed by highland barley growth are provided, the bran, the straw, the decomposed excrement and other agricultural wastes are used, cost is saved, efficiency is improved, and the utilization rate of resources is increased.

The present invention relates to the field of cable technology, and specifically to a lightweight flexible reel cable, comprising an outer sheath, a reinforcement layer, an inner sheath, a mica tape layer, a ground wire and a main line, wherein the apparent density of the inner sheath is ≤0.35g / cm 3 , tensile strength ≥ 3.5MPa. The reel cable containing the inner sheath provided by the present invention is light and high-strength, which can avoid adverse effects on the normal operation of the equipment and the performance of the cable itself due to excessive weight.

The invention relates to the technical field of building materials, in particular to a light anti-corrosion cement-based prefabricated part as well as a preparation method and application thereof. The cement-based prefabricated part is prefabricated and formed by bonding a base body located on the inner layer of the cement-based prefabricated part and a surface material located on the peripheral layer of the cement-based prefabricated part through an adhesive and performing microwave heating. Wherein the surface material is prepared from filler, modified stone powder, cement and the like through colloid mill shearing treatment and filter pressing treatment; the matrix is prepared by mixing a foaming agent, mineral powder, sodium hydroxide, metakaolin, aggregate, polypropylene fiber, calcium lignosulphonate and the like, putting into a mold, performing steam curing and demolding. The outer surface of the base body is coated with an adhesive, and the surface material and the base body are combined in a vibration extrusion forming mode and then subjected to microwave heating treatment to be manufactured into the cement-based prefabricated part. The cement-based prefabricated part is high in salt resistance, freezing resistance and acid resistance, light in weight and suitable for being used as a building material in a cold region, including curbs.

The utility model relates to an integrated building module based on a combined formwork component, and belongs to the technical field of modular buildings. Comprising an integrated building module with a combined formwork vertical component and an integrated building module without a combined formwork vertical component. The integrated building module with the combined formwork vertical components is composed of the combined formwork vertical components, combined formwork beams, a bottom plate, a top plate and partition walls. The integrated building module without the combined formwork vertical component is only composed of a combined formwork beam, a bottom plate, a top plate and a partition wall. The integrated building module can effectively solve the problems that in the existing assembly type technology, an integrated building module is large in dead weight and poor in anti-seismic performance, the wall is large in thickness, the indoor area is occupied, integration, assembly and production are tedious, and cost is high.

The invention belongs to the technical field of polyester resin, and particularly relates to polyester resin with high impact resistance and super weather resistance and a preparation process of the polyester resin. The polyester resin is prepared from the following components in parts by weight: 30 to 40 parts of polyol, 40 to 55 parts of binary acid and / or anhydride, 15 to 25 parts of amino resin, 8 to 12 parts of acrylic polyol resin, 5 to 20 parts of acidolysis agent, 1 to 5 parts of polyamide, 0.1 to 0.5 part of esterification catalyst, 10 to 20 parts of modified filler, 2 to 4 parts of curing accelerator and 0.1 to 1.5 parts of antioxidant. According to the invention, polyamide is added to modify the resin, and is compounded with amino resin and acrylic polyol resin, so that the polyester resin of the high-impact super-weather-resistant powder coating is designed and prepared, impact resistance and a leveling effect can be considered, and the coating prepared from the polyester resin has good wear resistance and outstanding super weather resistance at the same time.

The invention belongs to the technical field of fluid curing. The liquid-state light-weight anti-seepage solidified soil is characterized by comprising flow-state solidified soil slurry and light-weight foamed concrete, the volume ratio of the flow-state solidified soil slurry to the light foamed concrete is 1: 1; the flow-state solidified soil slurry comprises a soil material, a curing agent and water, and the weight ratio of the soil material to the curing agent to the water is 1150: 80: 228; the light foamed concrete comprises water, cement and a foaming agent; the weight ratio of the water to the cement to the foaming agent is 150: 250: 2.24. The technical problem that backfill soil around an existing building foundation collapses is solved. The invention further discloses a preparation method of the liquid light anti-permeability solidified soil. The invention further discloses a construction method of the liquid light anti-permeability solidified soil.

The invention discloses a special aggregate for low-steam-curing-energy-consumption light-weight high-strength concrete and a preparation method of the special aggregate, and belongs to the technical field of building materials. The aggregate is boron nitride lightweight aggregate, and the boron nitride lightweight aggregate comprises the following raw materials: shale, fly ash and boron nitride; the mass ratio of the shale to the fly ash is (85-92): (8-15); the dosage of the boron nitride is 3%-20% of the total mass of the shale and the fly ash. The boron nitride lightweight aggregate is prepared through aging, granulation, sintering, ball milling and screening and replaces part of natural aggregate to be used for preparing the concrete, and on the premise that the strength of the concrete is not affected, the maintenance energy consumption of the concrete can be obviously reduced, and the dead weight of the concrete can be reduced; meanwhile, the additive can be used as a self-curing agent to promote the long-term strength increase of concrete.

The utility model discloses a twisting device for cotton spinning yarn processing, which comprises a base and a mounting plate, the rear end face of the base is connected with the mounting plate, the mounting plate is vertically arranged, a first motor is mounted in the base and connected with a bottom plate, a connecting rod is mounted on the top surface of the bottom plate, and the connecting rod is connected with the mounting plate. The twisting device comprises a bottom plate, a connecting rod is arranged on the bottom plate, an extension plate is arranged on the top of the connecting rod, threading holes are formed in the tops of the two sides of the extension plate, and two non-twisted spinning threads are arranged on the bottom plate. The wetting mode enables the bobbin below and the processing environment to be in a wet state, and if wiping is not carried out, the situation that a wire coil is excessively damped and a machine is excessively damped is caused.

According to the five-axis rotary table driven by the axial magnetic flux motor, the five-axis rotary table is arranged between the driving end of a first driving motor and a tailstock, a second driving motor is arranged in the five-axis rotary table and used for driving the rotary table to rotate, and the second driving motor is the axial magnetic flux motor; the second driving motor comprises a motor stator, a coil winding and a motor rotor, the motor rotor is arranged at one end of a rotating shaft in the five-axis turntable, the motor stator is arranged at the end, away from the rotating shaft, of the motor rotor, the coil winding is arranged on the motor stator, and the rotating shaft, the motor stator and the motor rotor are coaxially arranged. The thickness is reduced, the distance between the first driving motor and the gravity center of the five-axis turntable is shortened, and the energy consumption is greatly reduced.

The utility model relates to the field of vehicle bodies, in particular to an A-column reinforcing assembly and a vehicle body framework assembly with the A-column reinforcing assembly, which comprise a reinforcing assembly part, and the reinforcing assembly part comprises an A-column reinforcing plate and a side wall front connecting plate; the A column reinforcing plate and the side wall front connecting plate adopt an integrated design; the A column reinforcing plate and the side wall front connecting plate are integrated into a whole, one-time forming is achieved through the high-pressure die-casting technology, connection such as welding is not needed again, the production technology is greatly simplified, the used material is aluminum alloy, and the weight can be reduced by 25%-35%; by means of the design, the automobile body can be lightened, the manufacturing process is shortened, the number of parts is reduced, the assembly precision is improved, and the whole automobile integration degree is improved.

The invention relates to an ion type rare earth ore tailing sandy land soil improvement structure and an improvement method, and belongs to the technical field of ecological restoration. The ion type rare earth ore tailing sandy land soil improvement structure sequentially comprises a humus layer, a surface soil layer and a subsoil layer. The subsoil layer comprises rare earth ore tailing sandy land soil and a slow-release modifier; the surface soil layer comprises the rare earth ore tailing sandy land soil, a slow-release modifier and a quick-acting modifier; the slow-release improver comprises agricultural and forestry wastes, and the quick-acting improver comprises livestock and poultry manure, lime and a compound fertilizer. According to ecological function characteristics of the soil, aiming at physical characteristics and nutrient content of the soil and specific rare earth and aluminum toxicity pollution of a mining area, the soil layer is remolded by using different dosages and different types of improvers, so that the restoration of a local damaged soil ecological system is accelerated, and the ecological function restoration of the soil in the rare earth ore tailing sand land is realized.

The utility model discloses a pouring type composite material bending pultrusion arched beam-inhaul cable connection anchoring node, which belongs to the technical field of pultrusion section bar connection and comprises a bending pultrusion arched beam and a connection anchoring node, the connecting anchoring node comprises an end counter-force plate, a cover plate, an embedded arched beam support and a prestress inhaul cable anchor, the embedded arched beam support and the prestress inhaul cable anchor are fixedly arranged on the end counter-force plate, the bent pultrusion arched beam and the end counter-force plate are connected through the embedded arched beam support, and the shape of the embedded arched beam support is matched with the shape of the section of the bent pultrusion arched beam. The end of the bent pultrusion arched girder is inserted into the embedded arched girder support, the anchorage device is placed in the prestressed inhaul cable anchor, the prestressed inhaul cable anchor is fixedly connected with the prestressed inhaul cable, and the cover plate is connected with the end counter-force plate. By means of the structure, the problems that in the pultrusion profile connecting process, pultrusion profiles are prone to being split and damaged due to the fact that shearing stress is concentrated in traditional bolt connection, and bonding materials in a traditional adhesive connection method are poor in bearing capacity and durability are solved.

The invention relates to a flexible vibration self-adaption wind turbine blade which comprises a blade body, the rear edge of the blade body is flexibly connected with a flap through an inflatable expansion body, and inflatable cavities are formed in the positions, on the two sides of a chord line, of the expansion body. The chambers located on the two sides of the chord line swing along with the flap to change the compression degree so as to adjust the counter-acting force of the expansion body on the flap in a self-adaptive mode, and the flap angle between the blade body and the flap tends to be stable. The device is simple and compact in structure, light in self weight, high in strength, foldable and rapid to mount; when the blade works and the wind power is large, the flexible structure is affected by the wind power and can be bent upwards, and the stability of the whole blade is guaranteed. When the wind power is reduced, the flexible structure is affected by the pressure difference of the two air chambers and can be bent downwards, the operation efficiency of the blade at the low wind speed can be improved, and the effects of increasing efficiency and expanding stability are achieved.

The invention relates to a composite heat insulation felt of basalt fiber cloth reinforced basalt fiber felt for a fireproof cable and a preparation method and application of the composite heat insulation felt, and relates to the technical field of fireproof heat insulation materials, the preparation method comprises the following steps: pretreating basalt fibers to obtain first basalt fibers; the basalt fiber cloth is clamped between the two lapping layers of the first basalt fibers, then needling, cutting and rolling are conducted, and the basalt fiber cloth reinforced basalt fiber needled felt is obtained; and adding the basalt fiber cloth reinforced basalt fiber needled felt into a silicon dioxide sol precursor hydrolysate, and carrying out dipping treatment to obtain the basalt fiber cloth reinforced basalt fiber needled felt composite silicon dioxide sol. The basalt fiber cloth reinforced basalt fiber felt composite heat insulation felt for the fireproof cable provided by the invention has the characteristics of high tensile strength, moisture resistance, water resistance, low high thermal conductivity coefficient, no cracking at high temperature, no pulverization and the like.