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50results about How to "Improves strength and stability" patented technology

Hoisting system and hoisting construction method for large steel corridor trusses

The invention discloses a hoisting system and a hoisting construction method for large steel corridor trusses. The hoisting system comprises lifting points, hanging points and jack lifting equipment. The jack lifting equipment is mounted between the lifting points and the hanging points, the lifting points comprise first lifting frames and second lifting frames, the first lifting frames are connected with first main structures, the second lifting frames are connected with second main structures, four embedded steel beams which have equal heights and are parallelly arranged are arranged in the two lifting frames of each lifting point, the lifting points are arranged at the ends of the embedded steel beams, two box-shaped brackets are respectively welded on two sides of each beam body of each lifting point, a jack is mounted on each box-shaped bracket, and each torsion-resistant steel beam is welded between the two corresponding box-shaped brackets on the inner sides of the beam bodies of the corresponding lifting points; the four corresponding hanging points which vertically correspond to the lifting points on a frame are arranged on each steel corridor truss, and steel strands penetrate the box-shaped brackets from top to bottom and are fixed by the aid of anchors after descending and penetrating the hanging points. Each large steel corridor truss can be synchronously lifted by the aid of the four corresponding hanging points during construction. The hoisting system and the hoisting construction method have the advantages that the hoisting system is reasonable in design and easy to operate, and problems of large occupied land areas, heavy dead weights and poor balance in existing large steel corridor truss hoisting procedures can be effectively solved by the aid of the hoisting system and the hoisting construction method.
Owner:CHINA RAILWAY BEIJING ENG GRP CO LTD +1

Prefabricated green building system and construction method thereof

The invention relates to a prefabricated green building system and a construction method thereof, and belongs to the technical field of building construction industrialization. The prefabricated greenbuilding system includes a bottom plate, the bottom plate includes a plurality of first splicing strips spliced to each other, a first slot and a first inserting strip which are matched with each other are arranged on the opposite faces of every two adjacent first splicing strips, the cross section of each first slot is in a T shape, and each first inserting strip is arranged to be matched with the corresponding T-shaped first slot. The two ends of each of the multiple first splicing strips are provided with first covering strips for covering the two ends of each of the multiple first splicing strips, the cross section of each first covering strip is in a U shape, as the first slots and the first inserting strips are in the T shapes, the multiple first splicing strips are located on the same plane, and the fixing effect of the adjacent first splicing strips is improved. The ends of the multiple first splicing strips are covered with the first covering strips, deviations between the heights of the multiple first splicing strips along stand columns are prevented, and the strength and stability of the prefabricated building system are improved.
Owner:成都市新宏建筑工程有限公司

Multi-head branch-control 3D printer

The invention discloses a multi-head branch-control 3D printer. Longitudinal guide rails are two guide rails symmetrically distributed along the middle positions of transverse guide rails. Each longitudinal guide rail is symmetrically provided with two printing head mounting sliding blocks, wherein a 3D printing head is mounted on each printing head mounting sliding block. The four 3D printing heads on the two longitudinal guide rails complete printing in four areas of a printing platform. Every time printing of one layer is completed, the printing platform is driven by a power mechanism to rotate by 3.6 degrees, and therefore the printing areas corresponding to the four printing heads are stacked at the joint of the two adjacent printing areas of the lower layer. The four printing heads of the multi-head branch-control 3D printer work at the same time and do not generate interference to one another, and the printing efficiency is greatly improved; and the printing platform is arranged to be rotatable, and therefore after printing work of one layer is completed every time, the printing platform rotates by a certain angle, the printing area of each printing head is changed, staggered stacking between the different printing layers is formed, and the strength and stability of printed products are improved.
Owner:LUOYANG INST OF SCI & TECH

Full-aluminum alloy material van carriage and manufacturing process

The invention discloses a full-aluminum alloy material van carriage and a manufacturing process thereof. The all-aluminum alloy material van carriage comprises a bottom plate assembly, a top plate assembly, a left side plate assembly, a right side plate assembly, a rear door assembly and a front side plate assembly; each sub-assembly is processed separately to form a modular unit, and finally assembly molding of the carriage is completed on the assembly line; the whole frame of the carriage adopts a 6063T6 material aluminum alloy extruded profile, the profile is machined through milling and stamping by a special die to achieve the required state of assembling; assembling of the carriage frame adopts the assembly process of BOOM structure rivet riveting, argon arc welding and bolt connection combination to obtain a frame structure with high strength and good stability; a panel structure of the carriage adopts a 5052 material high-strength aluminum alloy single-layer plate, and the plateis manufactured through a sheet metal machining process such as blanking, punching, bending, argon welding, grinding and the like; and high-gloss powder spraying treatment is adopted on the outer surface of the whole carriage. According to the van carriage and the manufacturing process, the purpose of lightweight of the vehicle body is achieved by adopting the all-aluminum alloy material.
Owner:方大新材料(江西)有限公司

Cementing material prepared from oil-bearing sludge, preparation method and application of cementing material and cement prepared from cementing material

InactiveCN106587671AImproves strength and stabilityShort calcination cycleClinker productionGypsumSlag
The invention relates to a cementing material prepared from oil-bearing sludge, a preparation method and application of the cementing material and cement prepared from the cementing material, and belongs to the technical field of sludge treatment. The cementing material is obtained by mixing raw materials with water and then calcining the mixture, the raw materials comprise 60 wt%-90 wt% of a first raw material and 10 wt%-40 wt% of a second raw material, the first raw material is obtained by drying and smashing the oil-bearing sludge, the second raw material is obtained by drying and smashing steel slag, and the oil-bearing sludge is effectively treated and utilized through the industrial waste residues. The preparation method of the cementing material comprises the steps that the raw materials are prepared and taken to be stirred into material pellets by adding water, and the material pellets are calcined and then cooled. The preparation method is simple in process, low in energy consumption and complete in raw material treatment. The cement prepared from the oil-bearing sludge is prepared from 4 wt%-6 wt% of dehydrate gypsum, 65 wt%-90 wt% of cement clinker and 5 wt%-30 wt% of the cementing material and has the high compressive strength. By means of application of the cementing material in cement preparation, the potential value of the oil-bearing sludge can be fully utilized.
Owner:YANCHENG INST OF TECH

Method for reinforcing rock pillar in shallow buried tunnel with small spacing in city

The invention relates to a method for a reinforcing rock pillar in a shallow buried tunnel with small spacing in a city, and belongs to the technical field of tunnel construction. The methods comprisethe step that by the arrangement of one or more rows of grouting holes, seamless steel pipes are used as grouting pipes according to the construction sequence of jumping holes at intervals, through the hole grouting to reinforce septum rock pillars, the grouting pipes is used as a supporting skeleton to effectively improve the stability of the septum rock pillars; by the binding of the multi-stage pressure separating expansion mold bag on the grouting pipes, slurry is controlled to spread in the target area, and at the same time, the effects that the uplift and settlement of ground can be controlled and the impact on the ground and the surrounding area of the ground can be reduced are achieved; grouting material based on the rapid solidification type slurry can adjust the slurry gel timeaccording to the real time feedback of the grouting process in the field, the over diffusion of the slurry is prevented, the cost is saved, and the segmented and localized reinforcement of the septumrock pillars can be achieved by the matching with the pressure separating expansion mold bag.
Owner:SHANDONG UNIV

Filling material self-building retaining wall and construction method

PendingCN113027519AIncreased resistance to slipping and overturningImproves strength and stabilityMaterial fill-upFilling materialsRetaining wall
The invention discloses a filling material self-building retaining wall and a construction method, and belongs to the field of mining. In order to solve the problems that an existing filling retaining wall is high in cost and low in construction efficiency, the invention provides a filling material self-building retaining wall. The filling material self-building retaining wall comprises a plurality of filling retaining wall bodies which are arranged in a roadway from bottom to top, the filling retaining wall bodies are arranged in the roadway in a step shape, each filling retaining wall body comprises two baffles which are oppositely arranged, the edges of the two baffles are attached to surrounding rock in the roadway, the two baffles and the surrounding rock form a trapezoidal filling space, and the filling space is filled with a filling material. The filling material self-building retaining wall is built by the plurality of trapezoidal filling retaining wall bodies, the anti-sliding and anti-overturning capacities of the filling retaining wall bodies are effectively improved through the trapezoidal structures with the narrow upper portions and the wide lower portions, and then the strength and stability of the whole self-building retaining wall are improved; meanwhile, the construction method is easy to operate, the construction time is greatly shortened, and the efficiency is improved; and the filling material is adopted as the main material of the retaining wall, so that the cost is greatly reduced.
Owner:安徽马钢罗河矿业有限责任公司 +1

Selective water plugging method for high-water-content oil well of bottom water reservoir

The invention discloses a selective water plugging method for a high-water-content oil well of a bottom water reservoir. The selective water plugging method comprises the following steps of injecting a nitrogen pressure cone into a shaft, injecting a mixed solution of a foaming agent, a polymer solution, a foam stabilizer and a cross-linking agent, and forming gel foam in a stratum. then removing foam in a high-permeability layer through flowback, so that the purposes of temporary plugging of low permeability and enabling a subsequent water plugging agent to directionally enter the high-permeability layer are achieved; then injecting the water plugging agent, and enabling the water plugging agent to build an artificial partition plate at the proper position in a water producing layer, so that bottom water is prevented from moving upwards, and bottom water coning is restrained; and finally, enabling the water plugging agent to be displaced out of a certain position of a near wellbore zone through over-displacement of a polymer solution, so that a certain liquid production capacity after plugging is ensured, the injection pressure of the water injection well is prevented from being too high, and the validity period of the water plugging agent is prolonged. Under the combined action of the steps, directional water plugging is achieved, and the problems that water breakthrough of the oil well is too early, and the yield is sharply reduced after water breakthrough are solved.
Owner:SOUTHWEST PETROLEUM UNIV

Cardiac volume reduction system

The present invention discloses a cardiac volume reduction system and a guidance system; the volume reduction system comprises a multi-rod frame that is composed of a plurality of support ribs; the top of each support rib is provided with a barb, the tops of the support ribs are peripherally turned out to form a basin shape, the surface of each support rib is covered with polymer separator film, a support base is fixed to the bottom of the multi-rod frame, the guidance system includes a metal rod and a protective sleeve that are integrated, the protective sleeve sleeves the metal rod, the metal rod can slide back and forth in the protective sleeve, the top of the metal rod is connected with a support base, the support base is made from thermoplastic polyurethane elastomer, the metal rod can drive the support base and the multi-rod frame to slide into the protective sleeve. By receiving a volume reduction apparatus in the guidance system and piercing through the surface of the left ventricle with the guidance system, the cardiac volume reduction system is delivered into a human heart and implanted in the heart; through separation of the volume reduction apparatus, ventricular volume is reduced, ventricular tension is reduced, and ventricular reconstitution and a patient's cardiac functionality are improved.
Owner:苏州莱诺医疗器械有限公司

Novel steel bar planting structure and construction method thereof

The invention provides a novel steel bar planting structure and a construction method thereof, relates to the technical field of steel bar connecting machine manufacturing, and aims to solve the problems that when steel bar planting needs to be carried out a secondary structure on a civil engineering site, holes are drilled in a surface layer of an original concrete surface, then steel bars are planted, the work amount is large, and the work efficiency is low. The structure comprises a shell, a metal fixing piece, a metal chamfer, a metal binder, a main steel bar and a steel bar to be planted,wherein the shell is of a hollow design, the shell is designed to be T-shaped and is divided into a transverse part and a vertical part, the metal fixing piece is located at the upper portion of thetransverse part of the shell, the metal chamfer is arranged on the inner wall of the vertical part of the shell, the main steel bar is arranged on the transverse part of the shell in a penetrating mode, the steel bar to be planted is arranged on the vertical part of the shell in a penetrating mode, and a gap between the steel bar to be planted and the metal chamfer is filled with the metal binder.The structure reinforces connection between the planted steel bar and a main bar of an original structure, so that the strength and the stability are improved.
Owner:WUXI MUNICIPAL DESIGN INST

Topological optimization structure ceramic matrix and nickel-based high-temperature alloy integrated component and preparation method thereof

The invention discloses a topological optimization structure ceramic matrix and nickel-based high-temperature alloy integrated component and a preparation method thereof. A calcium oxide ceramic basedcasting mould with hydrating resistance is prepared; a ceramic matrix is placed in the bottom space of the calcium oxide based ceramic casting mould, and the periphery of the ceramic matrix and the casting mould are sealed through zirconium dioxide cellucotton; a calcium oxide funnel is arranged at an opening of the calcium oxide based casting mould, an outlet of the funnel is blocked by a pure nickel plug, and a solid-state nickel-based high-temperature alloy is placed in the funnel; and the calcium oxide based casting mould is heated under the vacuum environment, a nickel-based high-temperature alloy phase is firstly made to become a liquid state, then the pure nickel plug is smelted, the liquid-state nickel-based high-temperature alloy falls down onto the ceramic matrix, a ceramic matrix topological structure is filled with the liquid-state nickel-based high-temperature alloy, the liquid-state nickel-based high-temperature alloy is solidified, and the composite component is obtained. By means of the component and the preparation method, the problems that under the action of gravity, metal liquid drops cannot achieve complete mold filling, and the surface quality is influenced by the complex structure and solidification can be solved.
Owner:XI AN JIAOTONG UNIV

Installation structure of assembled door pocket

The invention provides an installation structure of an assembled door pocket. The installation structure comprises an indoor door frame, an outdoor door frame, a door frame baffle, a veneer and a cover plate. The indoor door frame comprises a first frame body, a first buckle and a second buckle, wherein the first buckle and the second buckle are arranged on the first frame body and located on thetwo sides of the first frame body correspondingly, and the inner side of the first buckle is connected with a wall corner of an indoor wall body; the outdoor door frame comprises a second frame body and a closing edge frame arranged at the bottom of the second frame body, the second frame body is arranged on a door opening wall body, and the closing edge frame is attached to an outdoor wall body;the door frame baffle is connected with the outer side of the second frame body; the top and the bottom of the veneer are in clamped connection with the second buckle and the door frame baffle correspondingly; and the cover plate is arranged on the outer side of the first buckle and is in clamped connection with the first buckle. Compared with the prior art, the installation structure has the advantages of being good in universality, capable of adapting to walls and door leaves with different thicknesses for use, convenient to install, fully connected with the wall bodies, good in connection strength and strong in stability.
Owner:GOLD MANTIS FINE DECORATION TECH SUZHOU CO LTD

Multi-stage vibration type shape sorting device for spherical nuclear fuel particles

The invention discloses a multi-stage vibration type shape sorting device for spherical nuclear fuel particles. The multi-stage vibration type shape sorting device comprises a feeding mechanism, a vibration transmission mechanism, an inclination angle adjustor, a material receiving box and an interstage particle conveying pipe. The feeding mechanism comprises a first-stage feeding mechanism and a second-stage feeding mechanism; the vibration transmission mechanism comprises a first-stage vibration table and a second-stage vibration table; the inclination angle adjustor comprises a first-stage inclination angle adjustor and a second-stage inclination angle adjustor, and the material receiving box comprises a first-stage qualified material receiving box, a first-stage waste material receiving box and an interstage particle conveying receiving box which are arranged on the discharging side of the first-stage vibration table and communicated with the vibration table surface of the first-stage vibration table; the material receiving box further comprises a second-stage qualified material receiving box and a second-stage waste material receiving box which are arranged on the discharging side of the second-stage vibration table and communicated with the vibration table surface of the second-stage vibration table. One end of the interstage particle conveying pipe communicates with the interstage particle conveying receiving box, and the other end of the interstage particle conveying pipe communicates with the second-stage feeding mechanism. Therefore, the technical problems of low particle screening precision and poor equipment vibration uniformity are solved.
Owner:TSINGHUA UNIV

Partition wall-wall connection structure

The invention discloses a partition wall-wall connection structure comprising a partition wall keel. Steel wire meshes are arranged on the two sides of the partition wall keel correspondingly. High-performance sprayed wall materials are sprayed on the outer sides of the steel wire meshes. The partition wall keel is composed of two transverse keels and multiple vertical keels, wherein the transverse keels are vertically and symmetrically arranged on a wall, and the vertical keels are perpendicularly installed between the two transverse keels. A protection partition plate is installed at the connection position of the transverse keel located on the top and the wall. An installation groove is machined and formed in the middle portion of the protection partition plate. The transverse keel located on the top is horizontally arranged in the installation groove, and a sealing adhesive strip is arranged at the connection position. The two sides of the sealing adhesive strip are filled with a sealant. Punched holes are formed in the connection positions of the transverse keels and the end portions of the vertical keels correspondingly. Expansion bolts are arranged in the punched holes. Theinner ends of the expansion bolts penetrate through the inner portion of the protection partition plate and are fixed in the wall. By means of the partition wall and wall connection structure, the connection structure of the partition wall keel and the wall is improved, the protection partition plate is designed at the connection position of the partition wall keel and the wall, and the installation stability of the partition wall keel can be effectively improved.
Owner:张炜

High-abrasion-resistance-strength spring supporting and hanging frame

The invention discloses a high-abrasion-resistance-strength spring supporting and hanging frame. The high-abrasion-resistance-strength spring supporting and hanging frame comprises a base, a cylinderand support columns. The support columns penetrate the cylinder, and the base is arranged at the bottom of the cylinder. The high-abrasion-resistance-strength spring supporting and hanging frame is characterized in that T-shaped grooves are formed in the two sides of the base correspondingly, the bottom ends of the support columns are provided with T-shaped connecting blocks matched with the T-shaped grooves in structure, and the T-shaped connecting blocks are arranged in the T-shaped grooves of the base and are fixed to the base through cooperation of screws and nuts; each support column is provided with an upper limiting block and a lower limiting block, wherein the outer side of the part, on the upper limiting block and the lower limiting block, of the support column is sleeved with a spring, the upper end of the spring abuts against the upper limiting block, and the lower end of the spring abuts against the lower limiting block; and a connecting fixing plate is arranged at the upper end of the cylinder and fixedly connected with the top ends of the support columns, and connecting fixing columns are arranged on the two sides of the connecting fixing plate. The high-abrasion-resistance-strength spring supporting and hanging frame is high in strength, hardness and tenacity, resistant to acid and alkali corrosion, high in stability and long in service life.
Owner:BEIDELI ENERGY EQUIP JIANGSU CO LTD
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