68results about How to "Bear well" patented technology

The invention relates to the technical field of concrete preparation, in particular to fiber-reinforced building solid waste recycled aggregate concrete and a preparation method thereof.The preparation method comprises the following preparation steps that S1, recycled coarse aggregate, slag, fly ash and river sand are mixed and stirred according to the proportion, and a cement mixture is obtained; s2, calcining the cement mixture for 2-3 hours to obtain cement clinker; s3, cement clinker, modified fibers, modified graphene oxide and tetrasodium iminodisuccinate are mixed according to the proportion and then poured into a stirrer to be stirred for 5-6 min; and S4, adding water into the stirrer according to the proportion, continuously stirring for 6-10 minutes, and taking out to obtain the fiber-reinforced building solid waste recycled aggregate concrete. According to the invention, the polystyrene fiber and the concrete are connected more tightly by using the modified fiber, and the polystyrene fiber can be subjected to multiple reactions with components in the concrete in an alkaline environment of the concrete to form a stable network structure, so that mechanical indexes such as crack resistance and breaking strength of the concrete are improved.

The invention relates to the technical field of wire and cable manufacturing, in particular to a high-flexibility low-smoke fire-fighting power cable and a preparation method thereof. The cable sequentially comprises a cable core, a shielding layer and an outer sheath layer from inside to outside, the outer sheath layer is prepared from the following preparation raw materials: 60 to 65 parts of methyl vinyl silicone rubber, 12 to 15 parts of ethylene propylene diene monomer, 8 to 10 parts of linear low-density polyethylene, 5 to 6 parts of cross-linking agent, 20 to 22 parts of flame retardant, 6 to 8 parts of reinforced flame-retardant filler, 20 to 25 parts of modified heat-conducting filler, 1.2 to 1.5 parts of coupling agent, 1.3 to 1.5 parts of antioxidant, 3 to 3.5 parts of lubricant, 2 to 2.5 parts of vulcanizing agent and 0.6 to 0.8 part of accelerant. The outer sheath layer of the high-flexibility low-smoke fire-fighting power cable prepared by the invention has excellent mechanical strength, toughness, heat-conducting property, high temperature resistance and flame retardant property, so that the high-flexibility low-smoke fire-fighting power cable has higher reliability and safety in fire-fighting power supply occasions.

The invention belongs to the technical field of constructional engineering, and discloses a high-stability fabricated concrete connection joint structure which comprises a stand column, four connecting grooves are formed in the outer surface of the stand column, precast beam bodies are inserted into the four connecting grooves, and a reinforcement cage is arranged in the stand column; the supporting mechanism is arranged at the bottom end of the connecting groove; a first connecting block can drive a hinged plate to move in a rotating rod and can drive the rotating rod to rotate, in the rotating process of the rotating rod, the hinged block can also slide in the rotating rod, and the rotating rod can push the hinged block and a supporting groove to move towards the surface of the precast beam body; and then the supporting groove supports the precast beam body, and finally the precast beam body extrudes the first connecting block to enable the supporting groove to support the precast beam body, so that the integrity of the structure is enhanced, the structure can better bear external loads, and the overall stability of the joint is improved.

The invention provides a thick photoresist photoetching method for smooth forming of a side wall of a deep mesa structure. The thick photoresist photoetching method comprises the following steps: coating a layer of uniform and compact positive photoresist on the surface of a chip by using spin coating equipment; pre-baking: placing the chip coated with the photoresist in a first temperature environment for baking; placing the pre-baked chip on a sample table of a contact type photoetching machine, placing a mask plate, adjusting WEC to a proper position, and then performing exposure; post-baking: placing the exposed chip in a first temperature environment for baking; developing: preparing a proper developing solution, and placing the post-baked chip in the developing solution to remove the photosensitive part so as to complete the forming of the mesa mask; and carrying out hardening process treatment on the developed chip by adopting a gradient heating mode. According to the invention, the quality of the side wall can be improved, the roughness of the side wall can be reduced, the adhesion quality of the passivation layer can be improved, and the performance of the infrared detector can be improved.

The invention discloses a guide plate coating for a hot-rolled seamless steel pipe and a preparation method thereof, and belongs to the technical field of material preparation, the coating comprises the following components by weight: 30-60 parts of high temperature resistant organic silicon resin, 10-20 parts of a silane coupling agent, 3-20 parts of modified basalt fiber, 3-10 parts of sodium carboxymethyl cellulose, 0.5-5 parts of a dispersant, and 50-80 parts of ethanol. Physical interlocking and chemical bond linkage between modified basalt fiber cloth and other components of the coating are achieved, lanthanum-doped heteropolyacid nanometer POSS microspheres are loaded on the surfaces of modified basalt fibers, the nanometer structure of the POSS microspheres and other components in the coating form physical entanglement, the overall structural stability of the coating is improved, and the stability of the coating is improved. 2, 4, 6, 7, 8-tetrahydroxy anthraquinone can chemically react with a silane coupling agent, high-temperature-resistant organic silicon resin and the like to form a chemical bond and a three-dimensional structure, so that the coating has the advantages of high temperature resistance, impact resistance, wear resistance and cold and heat cycle resistance, and is suitable for a working environment of a guide plate of a hot-rolled seamless steel pipe.

The invention discloses a full-automatic PTEE film stretching and sintering machine and a stretching and sintering method, and relates to the technical field of PTEE film stretching and sintering machines, the full-automatic PTEE film stretching and sintering machine comprises a sintering and heating bin, conveying pieces, a film to be stretched, a first assembly, a second assembly and a third assembly, the conveying pieces are symmetrically arranged in an inner cavity of the sintering and heating bin, and the film to be stretched is located in the middle of the conveying pieces; the first assembly and the second assembly are located on the same vertical plane, and through the design of the stabilizing pipe and the pushing piece, solution conveying work can be completed when the first assembly and the second assembly work; the problem that whether the conveying device and the stretching device are not flush or not and consequently the thin film is stressed unevenly can be ingeniously monitored indirectly through movement of the push piece in the stabilizing pipe; the design of one group of parts with multiple functions obviously reduces the complex maintenance work and cost caused by the increase of the parts; the overall operation efficiency of the equipment is improved, and the production continuity is guaranteed.

According to the upper die holder mechanism of the plastic product forming machine, a die holder up-down adjusting device comprises a chain wheel thread adjusting sleeve, the chain wheel thread adjusting sleeve is provided with an internal thread round hole which is connected with an external thread on a stand column in a matched mode, and the chain wheel thread adjusting sleeve is further provided with an annular supporting part which supports a limiting erecting part on a die holder in a matched mode. An auxiliary lifting adjusting mold locking air cylinder is arranged between the upper mold base and the supporting part. A chain wheel thread adjusting sleeve of the die holder up-and-down adjusting device is matched to drive the upper die holder to conduct up-and-down position adjustment on the stand column, an auxiliary lifting adjustment and die locking air cylinder can be matched to assist lifting adjustment and die locking, loads in the adjusting process are reduced, and the influence of gaps is eliminated after adjustment is completed; during auxiliary lifting adjustment and mold locking, the space position above the upper mold base is not occupied, the upper side of the upper mold base has more space positions for other parts to be installed and arranged, the upper mold base is directly installed on the upper side of the upper mold base and installed nearby, installation is convenient, execution control is also convenient, and the control precision is relatively higher.

The invention discloses a preparation method of a perovskite quantum dot two-dimensional array. Comprising the following steps: S1, preparing a precursor solution A; s2, synthesizing perovskite quantum dots; s3, centrifugally purifying the perovskite quantum dots once; s4, self-assembling perovskite quantum dots into a quantum dot two-dimensional array through light induction; and centrifugally purifying the perovskite quantum dot two-dimensional array once. Compared with traditional monodisperse perovskite quantum dots, the two-dimensional perovskite quantum dot array structure provides a more ordered and efficient path for charge transmission, energy loss in the transmission process is reduced, meanwhile, the ordered arrangement mode can enhance the stability of the structure to a certain extent, the influence of external factors on the optical performance is reduced, and the optical performance is improved. The unique structure is beneficial to improving the quantum yield of luminescence, the optical band gap can be more accurately regulated and controlled, and luminescence with specific wavelength is realized; the array structure enables the material to have better mechanical performance and adapt to more application scenes.

The application discloses a kind of maintenance racks for mixer discharge hopper, it is related to the technical field of maintenance rack, it includes operation platform, installation column and connecting passage, operation platform is located below discharge hopper and the discharge outlet of discharge hopper is projected in the central position of operation platform, and operation platform is arranged in parallel with ceiling;One end of installation column is fixed with operation platform, and the other end of installation column is fixed with ceiling;Connecting passage is communicated with the corridor of the other side of wall body, and connecting passage is communicated with the corridor of one side of wall body with operation platform.The maintenance personnel can go up and down operation platform through connecting passage, and the staff can directly overhaul and maintain discharge hopper on operation platform, without moving operation platform, and the maintenance personnel also do not need to go up and down operation platform frequently, improve the efficiency of overhaul.

The utility model relates to the technical field of bridge construction, and discloses a crossing movable platform attached to a high-altitude bridge, which comprises a space structure body, the top end of the space structure body is fixedly connected with the bottom surface of the bridge, and the space structure body comprises a plurality of polygonal annular frames; each polygonal annular frame comprises a polygonal bottom frame and vertical supporting frames distributed in the circumferential direction of the bottom frame. The multiple polygonal annular frames are sequentially arranged in the length direction of the bridge. The anti-falling net is arranged on the bottom surface and the circumferential direction of the space structure body in a tensioning manner; the climbing entertainment device is located in the space structure body and attached to the space structure body; the corners of the bottom frames of every two adjacent polygonal annular frames are aligned at the top points and connected through circumferential dampers used for consuming horizontal vibration, and metal dampers used for consuming vertical vibration are arranged between the top of the space structure body and the bridge. The technical problems that an ultra-long movable platform attached to a high-altitude bridge is greatly influenced by wind shock, and the sense of safety of tourists is low are solved.

The utility model belongs to the technical field of unmanned plane, concretely relates to a retractable landing gear, including containing frame, landing support, limiting component and telescopic push rod. The utility model discloses the rotation direction adjustment is toward the advancing direction of unmanned plane when the landing support is stored in the internal storage cavity of containing frame, and when the landing support rotates to the vertical state, limiting support is realized by utilizing limiting component, so that in the ground taxiing stage of unmanned plane, the reverse torque borne by the landing support will not be transmitted to the telescopic push rod, effectively reduces the abrasion and fatigue damage of telescopic push rod, guarantees its stability in the long -term use process, and then prolongs the service life, and reduces maintenance cost and replacement frequency.

The utility model discloses an anti-corrosion pipe fitting which comprises a pipe fitting connecting mechanism, the two ends of the pipe fitting connecting mechanism are each provided with a pipe in a threaded mode, the opposite ends of the two pipes are each provided with a plurality of threaded grooves distributed in an annular array mode, the pipe fitting connecting mechanism comprises a fixing ring, and a second clamping ring is connected to the outer side of the middle of the fixing ring in a clamped mode. A plurality of rotating rods which are distributed in an annular array mode are arranged on the inner side of the middle of the fixing ring and located on the two sides of the second clamping ring, a rubber pad is arranged at one end of each rotating rod, a lead screw is arranged at one end of each rubber pad, and each lead screw is correspondingly inserted into the corresponding threaded groove; a fixing block is arranged at the other end of each rotating rod, and a gear is arranged at one end of each fixing block; the inner sides of the two ends of the second clamping ring are each provided with an annular rack, and each annular rack is connected with the multiple gears arranged on the same side in a meshed mode. The utility model has the advantages of corrosion resistance and good sealing effect.

A modular, continuously adjustable support device for trenches includes front and rear support plates. Positioning plates are vertically installed on the left and right edges of opposite sides of each support plate. At least two crossbeams are detachably installed between the positioning plates of each support plate. The crossbeams on the front and rear support plates are aligned and connected by a continuously adjustable telescopic support rod device. Each support plate has a protrusion on one end face and a groove on the other end face. Adjacent support plates are assembled using the protrusion and groove. This modular, continuously adjustable support device for trenches simplifies the process, reduces construction costs, and avoids noise pollution.

The utility model discloses a quenching furnace insulating brick with high sealing performance, which comprises an insulating brick main body and a first positioning unit, the first positioning unit comprises a first positioning part and a first positioning groove, the first positioning part is arranged on the insulating brick main body, and the first positioning groove is arranged on the insulating brick main body. The plurality of insulating brick main bodies are fixed by clamping the first positioning parts into the first positioning grooves; the second positioning unit comprises a second positioning part and a second positioning groove, the second positioning part is arranged on the insulating brick main body, and the second positioning groove is formed in the insulating brick main body; the third positioning unit comprises a third positioning part and a third positioning groove, the third positioning part is arranged on the insulating brick main body, and the third positioning groove is formed in the insulating brick main body. According to the utility model, the first positioning unit, the second positioning unit and the third positioning unit are arranged, so that the connection stability among a plurality of insulating brick main bodies can be ensured, and the sealing performance is improved.

The utility model relates to the technical field of curtain wall installation, in particular to a connecting assembly for installing an aluminum plate curtain wall, which comprises a longitudinal connecting structure, and the longitudinal connecting structure comprises a first chemical anchor bolt, a first hanging seat and a first hanging piece; one end of the first chemical anchor bolt is connected with a wall body, and the other end is connected with a first supporting plate; one end of the hanging seat is provided with a connecting groove with a downward opening and matched with the first supporting plate, the hanging seat is connected with the first supporting plate through the connecting groove, and the other end of the hanging seat is connected with the second aluminum plate located below; the hanging seat is further provided with a groove which is provided with an upward opening and matched with the first hanging piece, the hanging seat is connected with the first hanging piece through the groove, and the other end of the first hanging piece is connected with the first aluminum plate located on the upper portion. By means of the connecting assembly, the problem that the installation process is complex can be effectively solved, and cost is low.

The utility model relates to the technical field of packaging cartons, and discloses a packaging carton with a display function, which comprises a packaging carton body, a flip cover, a base and a display component, the flip cover for sealing the packaging carton body is arranged at the top of the packaging carton body, the base is arranged in the packaging carton body, and the display component is arranged in the packaging carton body. A supporting column is arranged on the base through a connecting piece, a first reinforcing rib is fixedly connected to the supporting column, a second reinforcing rib is fixedly connected to the supporting column, the supporting column supports the packaging carton body through the first reinforcing rib and the second reinforcing rib, a turning frame is rotationally connected to the supporting column, and a plurality of clamping grooves are formed in the packaging carton body. The supporting columns are matched with the first reinforcing ribs and the second reinforcing ribs to disperse impact pressure borne by the packaging carton body, the packaging carton body can better bear the action of various external force, the physical strength of the packaging carton body is guaranteed, the damage resistance is improved, deformation caused when the packaging carton body is pressed or impacted can be prevented, and internal commodities are prevented from being damaged.

The present invention provides a frequency conversion cabinet with a multi-layer support mechanism, comprising a cabinet, a cabinet door arranged on the cabinet, and an inner cabinet arranged inside the cabinet; a first support mechanism arranged on the top of the cabinet for protecting the cabinet, the first support mechanism comprising an upper support plate and an inclined plate, an anti-bending component arranged between the upper support plate and the inclined plate, for improving the side compressive strength of the inclined plate; a connecting mechanism, comprising a first side support plate and a second side support plate, the front end surfaces of the first side support plate and the second side support plate are both provided with a support component for supporting the inclined plate, further improving the side compressive strength of the inclined plate. The present invention can ensure that the top and sides of the frequency conversion cabinet can be protected in a harsh environment to avoid internal or external damage, and can effectively achieve the effect of anti-impact support for the cabinet.

The bearing comprises an inner ring used for being matched with a main supporting shaft of the heading machine and an outer ring arranged on the outer side of the inner ring in a sleeving mode, the inner ring and the outer ring are in contact connection through a spherical surface, a cavity is formed between the inner ring and the outer ring, and a gear pair is arranged in the cavity. The gear pair comprises a gear connected with the inner ring and a gear sleeve connected with the outer ring, and the gear is matched with the gear sleeve to transmit torque between the inner ring and the outer ring; the heading machine uses the knuckle bearing as a connecting piece of a gripper shoe assembly and a main supporting shaft. The inner ring and the outer ring of the knuckle bearing are connected through a gear pair and an inner spherical surface and outer spherical surface contact mode, compared with the mode that torque is transmitted through pure spherical surface contact and sliding friction, swing of a certain angle can be achieved, high torque can be better borne, and meanwhile the torque is transmitted; the strength of the whole system of the gripper shoe assembly and the knuckle bearing can be guaranteed, and the situations of breakage, relative rotation and abrasion of the knuckle bearing are avoided.

The utility model relates to the field of rubber cups, and discloses a fillet transition rubber cup. According to the rubber sealing ring, stress acting on the rubber sealing ring can be more uniformly distributed through the design of the sealing ring fillets, local stress concentration is avoided, stress distribution is more uniform, material fatigue is reduced, fatigue cracking of the stress concentration place is avoided, meanwhile, the toughness of a product can be improved through the design of the sealing ring fillets, and the service life of the product is prolonged. According to the rubber sealing part of the component, external stress and pressure can be better borne, the risk of breakage or damage is reduced, in addition, the attaching performance of the rubber sealing ring and the contact face can be optimized due to the fact that the toughness is increased, the sealing effect is improved, normal operation of the product is ensured, and the performance requirement is met; the material fatigue can be reduced through the round corner design, and the fatigue cracking risk caused by stress concentration is reduced, so that the fatigue resistance of the sealing ring is improved, and the service life is prolonged.

The invention relates to the field of oxygenation pump speed reducers, and discloses a novel oxygenation pump speed reducer device with a sealing structure, which comprises a gear ring flange plate, a sun gear and a mounting bracket, a first planet carrier is arranged at the bottom of the gear ring flange plate in a surrounding manner, and three planet gears are arranged at the bottom of the first planet carrier; a gear ring is arranged at the bottom of the outer side of the gear ring flange plate, an inward-extending lubricating oil rod is arranged at the top of the gear ring in a penetrating mode, a sun gear is arranged on the inner sides of the three planetary gears, and a second planetary carrier is arranged at the bottom of the sun gear. According to the speed reducer device, precise lubrication of moving parts such as gears and bearings in the gear ring is achieved, lubricating oil can be evenly distributed on all the moving parts through the through holes and the oil outlet holes formed at equal intervals, friction and abrasion are effectively reduced, the operation efficiency of the speed reducer device is improved, and the service life of the speed reducer device is prolonged. According to the precise lubricating system of the device, the operation efficiency and stability of equipment are greatly improved.

The amphibious emergency bridge comprises one or more sets of folding bridge plates, a plurality of fixing mechanisms are detachably installed on the folding bridge plates in the unfolded state, and guiding assemblies are arranged at the two ends of the folding bridge plates; an air support assembly is detachably mounted at the bottom of each group of fixing mechanism; a prestress assembly is arranged on the air supporting assembly; the folding bridge plate comprises a plurality of grating supports, every two adjacent grating supports are hinged, and the rotation directions of the other grating supports hinged to the two ends of the grating supports are opposite. The folding bridge plates are connected through the grids, the air supporting assembly is composed of a plurality of air bags, the folding bridge plates and the air supporting assembly are light in weight, the folding bridge plates are stacked after being folded when not used, the air supporting assembly can reduce the size in a deflation mode when not used, the air supporting assembly is folded and stored, and the occupied space is small; due to the light weight, the device can be more easily arranged on a to-be-repaired road section, the arrangement mode is simple, and laying can be conducted manually.

According to the excavator connecting rod structure and the using method, lifting lugs of the excavator connecting rod structure can be mounted or dismounted in time according to different using environments through a detachable lifting lug mechanism, and the problem that the lifting lugs interfere with other assemblies in the using process of an excavator is solved. Meanwhile, the stability of the lifted object is enhanced through the two lifting lugs; according to the technical scheme, the connecting rod comprises a connecting rod body and a detachable lifting lug mechanism; the connecting rod body comprises a front shaft seat and two rear shaft seats which are coaxially arranged, and a connecting plate is arranged between each rear shaft seat and the front shaft seat; a reinforcing plate is arranged between the two connecting plates; a detachable lifting lug mechanism is arranged on the reinforcing plate; the detachable lifting lug mechanism comprises a buckle and two lifting lugs, wherein the buckle and the two lifting lugs are arranged on the reinforcing plate. The two ends of each lifting lug are fixedly connected with lifting lug connecting plates correspondingly, and the two lifting lugs are connected into an integrated structure through the lifting lug connecting plates. And the lifting lug connecting plate is clamped with the buckle.

The utility model provides a wastewater treatment device with a microelectrolysis and Fenton cylinder-in-cylinder structure, which relates to the field of wastewater treatment equipment, and comprises a treatment tank, a support plate is fixedly arranged at the bottom end in the treatment tank, an inner cylinder is arranged at the top of the support plate, the bottom of the inner cylinder is connected with the support plate through a fixed disc, and the inner cylinder is arranged in the treatment tank. A grating plate is fixedly arranged at the bottom end of the inner side of the inner cylinder, iron-carbon filler is arranged at the top of the grating plate, through holes for wastewater to flow are formed in the surfaces of the supporting plate and the fixed disc, stirring equipment is fixedly arranged at the top of the treatment tank, a plurality of drainage plates are movably arranged on the inner side of the inner cylinder, and the wastewater purification effect is improved through the structure.

The utility model discloses a structure for fixing a concrete pump pipe on a floor slab. The structure comprises the floor slab, a butt joint piece arranged in the floor slab, a transfer piece detachably connected to the butt joint piece, a binding piece detachably connected to the transfer piece and the pump pipe connected between the binding piece and the transfer piece. Due to the arrangement of the rotating bearing piece, on one hand, the pump pipe can be borne, and on the other hand, the supporting strength below the pump pipe can be enhanced; due to the arrangement of the inclined struts, the stress of the transfer bearing main piece can be further shared; through the arrangement of the binding piece, it is guaranteed that the pump pipe is fixed; through the arrangement of the binding belt, the pump pipe is restrained; and through the arrangement of the butt joint piece, fixed installation of the transfer bearing piece and the butt joint piece is guaranteed, and finally bearing of force through the floor is facilitated.

A toothed chain transmission system, belonging to the field of chain drive technology, includes a toothed chain and sprockets that mesh with each other. The chain includes guide plates, toothed chain plates, pins, and rollers. Rollers are mounted on the pins. The guide plates are located on both sides of the chain, and the two ends of the pins are respectively interference-fitted with first connecting holes on the guide plates. The toothed chain plates include first toothed chain plates and second toothed chain plates. The first toothed chain plates are arranged side by side along the pin axis on two adjacent pins between adjacent guide plates. The second toothed chain plates are connected to two pins located on the inner side of the first toothed chain plates between adjacent first toothed chain plates. This invention is based on the meshing transmission principle of toothed chains and optimizes and improves the original toothed chain, thereby achieving the goals of noise reduction, load increase, and transmission efficiency improvement when used in conveying equipment, significantly improving the overall performance and reliability of the chain drive system.

The utility model discloses a pressure-resistant large-diameter paper tube, which relates to the technical field of paper tubes, and comprises an outer tube, a pressure-resistant structure is arranged on the inner side of the outer tube, and the pressure-resistant structure comprises a pressure-resistant ring connected to the inside of the outer tube; the supporting assembly is connected to the middle of the compression-resistant ring, and the compression-resistant ring and the supporting assembly are matched to be used for supporting the outer pipe; the clamping assembly is arranged between the compression-resistant ring and the supporting assembly, and the clamping assembly is used for connecting the compression-resistant ring and the supporting assembly; the inner wall surface of the outer pipe is fixedly connected with the filling layer, and the filling layer is used for supporting the outer pipe. According to the large-diameter paper tube, the compression-resistant structure is arranged, the supporting assembly and the compression-resistant ring are conveniently connected through the clamping assembly, then external force is borne through cooperation of the compression-resistant ring, the arc-shaped supporting plate, the reinforcing ribs and the reinforcing plates, and therefore the whole large-diameter paper tube has the good compression-resistant performance.

The utility model discloses a reinforcing bracket for a fan of a gas water heater, which is assembled between an exhaust fume collecting hood and a motor and comprises a supporting piece and a fitting piece which are connected with each other, a motor support used for supporting the motor is arranged on the motor, the attaching piece is fixed to the motor support, and the exhaust fume collecting hood is connected with a supporting piece used for supporting the motor support. The overall structural strength of the reinforcing support is enhanced through the flanging reinforcing ribs, deformation or damage caused by overlarge local stress is prevented, and the deformation resistance of the reinforcing support is improved.

A preparation method of natural fiber web reinforced thermoplastic recyclable composite material, after cutting the three-dimensional natural fiber material, the surface is washed and sewn to reinforce; after water bath, wash with deionized water to neutral, place in different concentration of alkaline solution to form a large number of convex particles on the surface of the fiber; the cellulose fiber web is placed on the thermoplastic resin film, the uppermost layer is laid with thermoplastic resin film, and placed on the hot press, and the mold is opened to obtain the cellulose fiber web reinforced thermoplastic composite material; with high performance fiber reinforced thermoplastic composite material as upper and lower layers, the middle layer is cellulose fiber web reinforced thermoplastic composite material, and natural fiber web reinforced thermoplastic recyclable composite material is obtained. The natural fiber web is used as the reinforcing body, and the thermoplastic resin is used as the matrix. The composite material is prepared by controlling the material mass fraction, thickness, hot pressing temperature, hot pressing pressure and hot pressing time. The composite material has the advantages of low density, low price, environmental friendliness, repeated recycling and the like.

The utility model belongs to the technical field of conveying equipment, and relates to a novel steel material conveying line which comprises a head assembly, a tail and tensioning assembly, a surface increasing wheel and a rack, an upper carrier roller, a lower carrier roller, a vertical roller, a baffle assembly and a buffer chute are installed on the rack, and a special conveying belt used for conveying materials is arranged on the carrier rollers. The special conveying belt comprises a base belt and a replaceable short belt, the lower carrier roller comprises a lower carrier roller frame and a lower carrier roller roller, the surface increasing wheel comprises a mounting frame and a surface increasing wheel body, the head and the driving combination are used for driving the special conveying belt, steel materials are conveyed to a buffering chute of the head from the tail and fall to a downstream conveying line, and continuous conveying of the steel materials is completed. The special conveying belt is adopted to replace a traditional conveying belt, the abrasion resistance, the anti-tearing performance and the replaceability of the conveying belt are improved, and conveying of steel materials such as scrap steel with lumpiness, complexity, sharp edges and corners, high abradability and impact characteristics is completed.