33results about How to "Change the construction method" patented technology

The invention relates to a steel dam space truss structure unit body and an arch-style steel dam. The unit body is a hexahedral space truss structural body with a front end surface and a rear end surface in key pattern structures and other lateral surfaces in a stud link chain structure, connecting rods are respectively arranged between a central node O of the front end surface and other nodes, supporting connecting rods are respectively arranged between four middle nodes A,B,C and D of the front end surface and four vertexes of the rear end surface, and supporting connecting rods are respectively arranged between a central node O' of the rear end surface and the four vertexes of the rear end surface. The steel dam, which is a space truss structure with a curve upstream surface, is formed by combining the space truss structure unit bodies, an eliminator is fixed on the curve upstream surface, the bam bottom of the steel dam is fixed with a reinforced concrete bearing platform, and both sides of the steel dam are respectively fixed with the stepped bearing platform formed by reinforced concrete structures at both banks. The steel dam is kept stable mainly by the counteraction of arc ends at both banks and has strong overload capacity, high degree of safety and engineering investment saving.

The invention relates to a novel plastic component and a field irrigation and drainage integrated plastic channel thereof. The novel plastic component is structurally characterized in that a channel wall of the novel plastic component is divided into an inner channel wall, an outer channel wall and a channel wing, the inner channel wall is an irrigation water flow passage, and the outer channel wall and the channel wing are in close fit with a farmland ditch; a connection groove is divided into a head-end connection groove and a tail-end connection groove, the head-end connection groove is positioned at the head end of the plastic channel, and the tail-end connection groove is positioned at the tail end of the plastic channel. Plastic which is long in service life and recyclable is adoptedto integrate a field irrigation channel and a drainage ditch to achieve the objective of conserving cultivated land. Compared with conventional irrigation channels and drainage ditches, cultivated land occupied by the drainage ditch is reduced greatly, and irrigation water utilization coefficient is improved. The novel plastic component is simple in structure and convenient and quick in transportation; combining is realized through a connection device, so that construction procedures are simplified, and construction efficiency is improved greatly; by additionally arranging a cover plate, irrigation water evaporation can be prevented while earthing planting can be realized, and requirements of ecological agriculture are met.

The invention relates to a wall structure of an SMC (Sheet Molding Compound) composite material. The wall structure is characterized by comprising a daughter plate and a parent plate which are formed by pressing the SMC composite material, wherein the daughter plate is buckled on the parent plate; the parent plate is fixedly installed on a main frame and comprises a substrate and a blocking column sleeve arranged on the substrate; the daughter plate comprises a substrate and a blocking column arranged on the substrate, the blocking column is inserted to the blocking column sleeve; a swallow-tailed annular bulge is arranged on the outer circular surface of the blocking column; a swallow-tailed annular groove matched with the bulge is arranged in an inner hole of the blocking column sleeve;and foam cement is filled in the hollow cavity between the daughter plate and the parent plate. By adopting the wall structure consisting of the daughter plate, the parent plate and the foam cement, the construction way of a wall body is changed, the construction working hour is shortened, the building material cost is lowered, and building wastes are not generated in the construction process; the daughter plate and the parent plate can be manufactured into various colors; paint is unnecessarily coated on outdoor wall surfaces, and secondary decoration is unnecessarily performed on indoor wall surfaces, therefore, the cost is saved, and the time waiting for residence is shortened. In addition, the wall structure has the characteristics of light weight, strong loading, heat insulation, sound insulation, water resistance, fire resistance, insulation, shock resistance, no shielding and the like.

The invention discloses an effective switching time based pulse width modulation method for a three-phase four-switch inverter. The effective switching time of a switch tube within a modulation period is obtained by calculation based on the modulation voltage, the direct current bus voltage, the capacitive voltage and the modulation period of the inverter; the fluctuation of the capacitive voltage is taken into consideration; and the effective switching time can be adjusted in real time according to the fluctuation of the capacitive voltage. By moving the position of the effective switching time within one modulation period, the configuration way of the equivalent zero vector can be flexibly changed, and the obtained each switch tube driving signal can be used for driving and controlling the inverter. In addition, by adoption of the pulse width modulation method, a determination link for the section of the target voltage vector is omitted, so that the calculation process is greatly simplified; and therefore, the pulse width modulation method can be applied to the control field of the three-phase four-switch inverter, such as control on the inverter in a motor driving system, a grid-connected inverter or an active filter which are powered by the three-phase four-switch inverter.

The invention relates to the field of manufacturing building decoration materials and vehicle materials, in particular to an ultra-thin natural stone composite board manufacturing process, which includes preparing a backing reinforcement layer, a foundation plate, and processing natural stone with a fixed thickness. Fix the backing reinforcement layer on both sides of the natural stone, fix the connection layer at the outer ends of the backing reinforcement layer on both sides, respectively fix the base plate at the outer end of the connection layer, cut from the center of the natural stone to obtain two composite boards, and then The obtained composite board is subjected to a detachment process from the connection layer, the base board is separated from the natural stone and the backing reinforcement layer, and the residue of the connection layer at the bottom of the backing reinforcement layer is removed to obtain a finished product. The invention has high preparation efficiency, accurate precision, strong toughness, and firm coating, and can be widely used in various fields such as architectural decoration, mobile vehicles, lighting products, etc. Convenient, can greatly reduce the related costs.

The invention discloses a steel strand combing and bundling production line. The steel strand combing and bundling production line comprises multiple pay-off reels on which steel stands are arranged in parallel, wherein the single steel strand in each pay-off reel sequentially passes through a strand arrangement structure, a clamping and feeding mechanism, a counting mechanism, a cut-off mechanism and a strand guiding mechanism which are arranged in parallel according to an axial direction and have the same structure, then the multiple steel strands jointly penetrate into a strand pulling mechanism and a bundling mechanism arranged behind the strand pulling mechanism, and the steel strands bundled by the bundling mechanism are weaved and combed to be wound on a winding drum of the winding mechanism. The steel strand combing and bundling production line has the beneficial effects that the automatic production line is used for replacing a manual production manner to complete combing, sizing, cutting-off and coiling of the steel strands, the multiple steel strands are weaved and combed into coils to be cut, steel stand bundles with various lengths required by construction are efficiently produced in factories, the customized steel strand bundles are distributed to construction sites, the factory distribution of the sizing steel strand woven and combed products is realized, a construction method in the prior art is changed, and the efficiency and quality of prestress construction are improved.

The invention discloses a construction method and a construction platform for a high-rise building cantilever structure layer. The construction method comprises the following steps of: pre-embedding aconnecting steel plate for fixing an ultra-long cantilever I-shaped steel formwork system during construction of a lower two-layer main body structure of the cantilever structure layer; manufacturingthe ultra-long cantilever I-shaped steel formwork system by adopting I-shaped steel; after concrete of the lower two-layer main body structure of the cantilever structure layer is poured and fully solidified, fixedly connecting the ultra-long cantilever I-shaped steel formwork system with the pre-embedded connecting steel plate; laying a formwork on the top surface of the ultra-long cantilever I-shaped steel formwork system and fixedly connecting the formwork with the ultra-long cantilever I-shaped steel formwork system; erecting a scaffold on the top surface of the formwork to serve as the construction platform of the cantilever structure layer. According to the construction method and the construction platform, the construction mode that the scaffold needs to be erected from the groundin the prior art is changed, and the influence on garden forests and small municipal construction in a site before a floor type all-round scaffold is disassembled is avoided; and a large number of steel pipes required for erecting the scaffold are saved, and the construction method and the construction platform have the characteristics of high construction speed and low construction difficulty.

The invention provides a heat preservation and decoration structure integrated wallboard and a wall structure, and relates to the technical field of building heat preservation. According to the adopted scheme, the heat preservation and decoration structure integrated wallboard comprises a heat preservation board, wherein anchoring connecting pieces are arranged on the heat preservation board, the inner ends of the anchoring connecting pieces are exposed on the inner side face of the heat preservation board, and the inner ends of the anchoring connecting pieces are connected with steel bar frame pieces; the steel bar frame pieces comprise outer side steel bars and inner side steel bars, the outer side steel bars and the inner side steel bars are connected through middle web bars, and the middle web bars, the outer side steel bars and the inner side steel bars are provided with a plurality of connecting points; and the outer side steel bars are located on the side close to the heat preservation board, the inner side steel bars are located on the side away from the heat preservation board, and protective gaps are formed between the outer side steel bars and the inner side face of the heat preservation board. The wall structure comprises a base layer wall and the heat preservation and decoration structure integrated wallboard which are fixedly connected together. The problems that an existing wall construction mode is low in construction efficiency and high in cost, and combination of the heat preservation board and the base layer wall is not firm are solved.

The invention relates to a star-shaped foundation, which comprises a star-shaped component embedded in the ground, a plurality of hair anchor rod bodies, and supporting plates and anchor plates matched with the hair anchor rod bodies. The star-shaped member is provided with several radially protruding arms, and the center is provided with an anchor hole I; the outer end of each arm is provided with an anchor hole II; the center of the backing plate is provided with an anchor hole III; The bottom ends of several hair anchor rods are anchored, and the top ends pass through the anchor hole I or the anchor hole II of the star-shaped member respectively, and pass through the anchor hole III of the backing plate to connect with the anchor plate; The beard and hair bolt body is made of tensile filaments, the lower part of the tensile filaments is bundled with detonator-equipped water-resistant explosives, and the tensile-resistant filaments are evenly distributed around the detonator-equipped water-resistant explosives along the circumferential direction. The invention also discloses a construction method of the foundation. The invention has a simple structure, fundamentally changes the foundation form and construction method, significantly saves investment and reduces spoil.

The invention provides a mine transportation track laying device and a construction method thereof. The device comprises a transport vehicle, and the transport vehicle is provided with a flat laying system, a sleeper laying system, a steel rail laying system and a material hopper. The construction method includes the following steps that the flat laying system is used for leveling muck at the bottom of a roadway; the sleeper laying system is used for laying sleepers on the leveled muck; the steel rail laying system is used for laying steel rails on the sleepers; and the material hopper is usedfor backfilling residues to the positions of the sleepers, and the flat laying system is used for leveling the residues. The mine transportation track laying device and the construction method have the advantages that an original construction mode is changed, the new construction method is created, and the purposes of quick construction, simple working procedures, economical efficiency, convenience and high efficiency are achieved.

The invention relates to the technical field of metallurgy, in particular to a coating material for a furnace kiln and a preparation method and application thereof. The coating material for the furnace kiln is prepared from the following raw materials: flint clay, alumina powder, alumina powder, silica powder, a binding agent, kyanite, a water reducing agent, a coagulation accelerator, an anti-explosion agent and a gelation accelerating additive. The construction form of the coating material can be changed according to the construction site of the furnace and kiln and different construction requirements, one material can meet the requirements of various construction operation modes, and the use requirements of the furnace and kiln can be met due to the excellent performance of the coating material. The material prepared by the method still has the advantages of good melt or gas erosion resistance, good smearing property, good adhesiveness with a protected material, good thermal shock stability and chemical stability, difficult cracking in use and long service life.

The invention relates to a four-corner anchored anti-pullout and pressure-shift foundation of a cracked rock mass foundation, which includes an upper plate embedded in the cracked rock mass and whose upper surface is higher than the ground, four hairpin bolt bodies, four backing plates and four anchors plate. The upper plate is quadrilateral, with an anchor hole I arranged at each of its four corners; an anchor hole II is arranged in the center of each backing plate; the bottom ends of the four hair anchor rods are anchored, and the top ends They pass through one of the anchor holes I of the upper plate respectively, and pass through the anchor hole II of one of the backing plates to connect with one of the anchor plates; It is composed of drawn filaments, the lower part of the stretched filaments is bundled with the water-resistant explosives equipped with detonators, and the said stretched filaments are evenly distributed around the said water-resistant explosives equipped with the detonators along the circumferential direction. The invention also discloses a construction method of the foundation. The invention has a simple structure, fundamentally changes the foundation form and construction method, saves investment and reduces spoil.

The invention discloses an intelligent construction site management system, which comprises an information acquisition unit, a programmable controller, a data transceiving module, a data storage cloud and a remote mobile terminal, the information acquisition unit comprises a personnel information management module, a site information monitoring module, an environment information monitoring module, a process information supervision module and a material information management module. According to the intelligent construction site management system, through arrangement of the personnel information management module, identities of entering personnel can be identified so as to prevent irrelevant personnel from entering the site, through arrangement of the site information monitoring module, the current construction situation of a construction site can be known in real time, the efficiency and safety of supervision workers are improved, and through arrangement of the environment information monitoring module, the real-time environment change of a construction site can be known, so that the construction time and the construction mode can be changed, the phenomena of disturbing residents and the like are prevented, and the construction progress of the day is recorded and charted by special personnel through the arrangement of the progress information supervision module.

The invention provides a simple and convenient thermal insulation structure wallboard, a wall structure and a wall manufacturing method, and relates to the technical field of building thermal insulation. According to the adopted scheme, the simple and convenient thermal insulation structure wallboard comprises a composite thermal insulation board, wherein anchoring connecting pieces are arranged on the composite thermal insulation board, the inner ends of the anchoring connecting pieces are exposed on the inner side face of the composite thermal insulation board, and the inner ends of the anchoring connecting pieces are connected with steel bar frame pieces; and the steel bar frame pieces comprise outer side steel bars and inner side steel bars, the outer side steel bars and the inner side steel bars are connected through middle web bars, the outer side steel bars and the inner side steel bars are provided with a plurality of connecting points, and protective gaps are formed between the outer side steel bars and the inner side face of the composite thermal insulation board. The wall structure comprises a base layer wall and the simple and convenient thermal insulation structure wallboard which are fixedly connected together. The problems that an existing wall construction mode is low in construction efficiency and high in cost, and combination of the composite thermal insulation board and the base layer wall is not firm are solved.