61results about How to "Reduce the number of seams" patented technology

The invention belongs to the technical field of automobile manufacturing and provides an automobile drive axle housing and a manufacturing technology and a manufacturing mold of the automobile drive axle housing. The manufacturing technology comprises a blanking process, a thickening process, a shifting process, a hydraulic molding process, an aging process, a finish machining process, a welding process, a drilling process and a coating process. According to the automobile drive axle housing and the manufacturing technology and the manufacturing mold of the automobile drive axle housing, by additionally arranging the thickening process, the shifting process and the hydraulic molding process, the welding positions of the automobile drive axle housing and the juncture number of parts are reduced, so that the finish machined axle housing is of a structure formed integrally; the problems of stress concentration and cold joint caused by the welding process are avoided, the finished product sealing performance of the whole axle housing is ensured, and occurring of the oil leakage phenomenon is reduced; in addition, by means of the structure formed integrally, the strength of the automobile drive axle housing can be improved, fracture is prevented, and the reliability of the whole automobile drive axle housing is improved; accordingly, the axle housing is light in weight, and the cost is reduced.

The invention discloses a method for preparing an embossed decorative veneer, which comprises the steps of selecting, hydrothermal softening, slicing, veneering, cold inspection, rinsing, and wire drawing, wherein the wire drawing step comprises three processes of direct drawing, sweeping and polishing; during direct drawing, a groove is formed on the surface of a board by a front steel wire roller on a wire drawing machine and grains are deepened; during sweeping, a plurality of disc brushes are arranged on the wire drawing machine, each disc brush is driven to rotate by a respective drive motor and comprises a disc and steel wires which are densely arranged on the lower end face of the disc, and the plurality of disc brushes rotate to widen the grains of the groove on the surface of the board, so that the grains on the surface of the board are wider, and the embossed effect is more vivid; and during polishing, first two groups of brushed parts of the board are polished by a rear steel wire roller on the wire drawing machine, so that a finished product has smooth feeling, and the embossed effect is achieved on the surface of the veneer. Compared with the prior art, the method ensures that wood grains are more three-dimensional, vivid and natural.

The invention provides an assembly type bamboo bridge. The assembly type bamboo bridge comprises bamboo longitudinal beams (1), bamboo transverse beams (2), bamboo panels (3), transverse pre-stressing tendons (4) and longitudinal pre-stressing tendons (16), the outer surface of a bamboo is sequentially and uniformly coated with a layer of waterborne polyurethane resin, a layer of polyurethane resin, a layer of waterborne polyurethane resin and a layer of resorcinol formaldehyde resin, and the expansion coefficients of the four coating layers are sequentially lessened from the outer surface of the bamboo to outside. The assembly type bamboo bridge provided by the invention has the advantages that the structural strength is large, the ductility is good, a selected material is environment-friendly, standardization degree and assembling degree of structural members are high, the structural integrity is good, the advantages of the material can be fully expressed, and the requirements on normal use and durability of a bridge structure can be met.

The present invention discloses one kind of sludge haydite-cement concrete for road and its preparation process. The sludge haydite-cement concrete is mixture of sludge haydite, cement, crushed stone, sand, water and admixture in certain weight proportion. It is prepared through wetting sludge haydite and mixing the materials; and is used through spreading, vibrating and curing. The sludge haydite-cement concrete has excellent performance, environment friendship and low production cost.

The invention discloses erbium-containing oceangraphic engineering and goods stock novel corrosion-resistant aluminum alloy and a plate manufacturing method thereof, relates to aluminum alloy and a plate manufacturing method thereof and aims at finishing large-dimension plates with the plate width not lower than 3500mm and industrial production technology researches. The aluminum alloy disclosed by the invention is prepared from the elements of Mg, Mn, Er and Zr. The method comprises the steps:1, preparing materials; 2, smelting; 3, casting; 4, evenly annealing; 5, hot rolling; 6, annealing; 7, stretching; 8, saw cutting to obtain the erbium-containing oceangraphic engineering and goods stock aluminum alloy. Under the premise of meeting material corrosion resistance environment and hot processing technology performance, comprehensive performance of the prepared erbium-containing ocean engineering and goods stock aluminum alloy plate disclosed by the invention is improved by 10% or above; thus, the alloy can meet requirements of oceangraphic engineering and goods stock materials, and the plate manufacturing method disclosed by the invention can be applied to the field of aluminum alloy manufacturing.

The invention provides a prefabricated assembled hollow pier with transverse partition plates and a construction method, and relates to the technical field of bridge construction. The hollow pier sequentially comprises a foundation, a general section and a top cap section from bottom to top, and foundation connecting steel bars and foundation connecting columns are arranged at the top of the foundation; general section transverse partition plates are arranged at the top and the bottom of the general section, a general section reserved groove is arranged in the general section transverse partition plate located at the bottom, and a general section connecting steel bar is arranged on the general section transverse partition plate located at the top; a top cap section transverse partition plate is arranged at the bottom of the top cap section, and a top cap section reserved groove is formed in the top cap section transverse partition plate at the bottom; during splicing, the connecting steel bars and the connecting columns located on a lower portion extend into the corresponding reserved grooves located on the upper portion, and a high-strength slurry is poured into the reserved grooves; and prestressed pipelines are pre-buried in the foundation, the general section and the top cap section, and connection is performed by penetrating through full-length prestressed tendons. By theadoption of the scheme, a prestress on a pier wall can be flexibly arranged, and manufacturing is easy and convenient.

The invention discloses a processing apparatus for an arc-structured thermal-insulation board. The processing apparatus comprises a downwardly pressing mechanism and a supporting seat. The arc-structured thermal-insulation board processed by the processing apparatus is of a multilayer composite structure and comprises an upper surface layer, a lower surface layer and an intermediate thermal-insulation core layer sandwiched between the upper surface layer and the lower surface layer. The downwardly pressing mechanism comprises a support frame, a downwardly pressing straight rod and a downwardly pressing head, wherein the downwardly pressing straight rod is a telescoping rod of a pneumatic cylinder or hydraulic cylinder, a pneumatic cylinder or hydraulic cylinder body is fixed at the upper end of the support frame, the downwardly pressing straight rod vertically extends into the upper end surface of the support frame, the downwardly pressing head is fixed at the lower end surface of the downwardly pressing straight rod, and the lower end surface of the downwardly pressing head is a cambered surface which is a semi-arc surface preferably. The supporting seat is located under the downwardly pressing head, the upper end surface of the supporting seat is an arc-shaped groove, and the arc-shaped edges of the arc-shaped groove of the supporting seat can be detached and fixed. With such a technical scheme, the downwardly pressing straight rod drives the downwardly pressing head to directly cooperate with the arc-shaped groove at the surface of the supporting seat so as to form the arc-structured thermal-insulation board through compression and molding.

The invention discloses a steel framework and modified ECC concrete slab composite fully-enclosed sound barrier. The steel framework and modified ECC concrete slab composite fully-enclosed sound barrier is characterized by comprising annular cross beams stretching across a railway line and arranged in the longitudinal direction of the railway line in a spaced manner; longitudinal beams are arranged between the two adjacent cross beams; cover plates matched with the external surfaces of the cross beams in radian are arranged between the external surfaces of the two adjacent cross beams; the widths of the cover plates in the transverse direction of the railway line are 1-3 m; the thicknesses of the cover plates in the transverse direction of the railway line are 3-8 cm; and the cover platesare preformed by using a high tenacity fibre reinforced cement composite. The steel framework and modified ECC concrete slab composite fully-enclosed sound barrier has the characteristics of good sound insulation effect, good durability, good fire resistance, good aerodynamic performance and good economic efficiency.

The invention provides a novel energy-saving bamboo bridge. The novel energy-saving bamboo bridge comprises longitudinal bamboo beams (1), transverse bamboo beams (2), bamboo panels (3), transverse pre-stressed trusses (4) and longitudinal pre-stressed trusses (16). A layer of waterborne polyurethane resin, a layer of polyurethane resin, a layer of waterborne polyurethane resin and a layer of resorcinol formaldehyde coat the outer surfaces of all the bamboo materials of the bamboo bridge in sequence. The bamboo bridge further comprises lighting devices and a brightness sensor, and the lighting devices are controlled to be started through the numerical value measured by the brightness sensor. The novel bamboo bridge can start the lighting device according to the brightness and save energy sources.

The invention discloses a super-high performance concrete frame structure fabricated building and a construction method thereof. A splicing unit at least comprises beam, column and floor integrated pieces prefabricated by super-high performance concrete. The height of each column is the height of a building storey; the beams are perpendicular to the side walls of the columns; the floors are located on the upper surfaces of the beams; connecting parts are arranged on the side edges of the floors; and the two ends of the columns stretch out of the end faces of the floors and the beams. When fabricating is constructed, after the prefabricated integrated pieces adjacent to the building plane, the super-high performance concrete is poured into joints between the connecting parts of the side edges of the floors to enable the prefabricated integrated pieces to form a whole. The upper storey and the lower storey of the building are connected through the columns of the beam, column and floor integrated pieces. The prefabricated integrated pieces adopt the super-high performance concrete as structure materials, and the reasonable connecting arrangement is configured, so that the average thickness of the floor and the amount of connectors and the joints between prefabricated members both are decreased substantially. The self-weight of the building is reduced substantially under the premise of guaranteeing the rigidity and strength of the building, and construction difficulty is reduced.

The invention discloses a seamless texture mapping method for a three-dimensional model. The method comprises the following steps: inputting a known three-dimensional model, an RGBD image, a projection matrix and a projection matrix error; screening out an RGB image which completely covers the three-dimensional model and has the minimum pose estimation error sum; calculating a pose relationship between each surface patch in the three-dimensional model and the screened RGB image, and determining a candidate viewpoint corresponding to each surface patch; eliminating the candidate viewpoints withwrong textures in all the candidate viewpoints; selecting an optimal viewpoint from the remaining candidate viewpoints after elimination to perform texture mapping; adjusting the color and brightnessof the three-dimensional model after texture mapping; and if occlusion exists in the optimal viewpoint, mapping historical textures to an occlusion area of the three-dimensional model after joint fusion processing to obtain a complete texture mapping three-dimensional model. According to the method, the brightness color difference of adjacent textures is effectively reduced, texture distortion caused by joint fusion is inhibited, and the accuracy and consistency of the overall texture of the three-dimensional model are improved.

The invention discloses a prestressed composite floor slab construction method without support. A large-span prestressed composite floor slab is invented by researching the large-span floor compositeslab, the large-span prestressed composite floor slab forms a composite structure with one or more beams in the construction process, the complicated processes of assembly, formwork support, bottom support arrangement, joint treatment and the like of a traditional floor panel are solved, no formwork support system is needed in construction, construction period is effectively shortened, and the construction cost is saved.

The invention provides an assembly type bamboo bridge. The assembly type bamboo bridge consists of bamboo longitudinal beams (1), bamboo transverse beams (2), bamboo panels (3), a transverse pre-stressing tendon (4) and a longitudinal pre-stressing tendon (16). All bamboos used by the assembly type bamboo bridge are soaked in a gum dipping tank which contains polyurethane resin and phenolic resin before being assembled, and boiled for 10-15 minutes at 100 DEG C-110 DEG C, wherein the volume ratio of the polyurethane resin to the phenolic resin is (2-2.5):1; and then, the bamboos are got out and dried, and a layer of waterborne polyurethane resin, a layer of polyurethane resin, a layer of waterborne polyurethane resin and a layer of resurcinolformaldehyde resin are uniformly coated on the outer surfaces of all bamboos in sequence. The assembly type bamboo bridge is large in structural strength, good in drawability, green and environment-friendly in used materials, standard in structural components, high in assembly degree, good in structural integrity, and capable of sufficiently bringing the advantages of the materials into play, and satisfying the normal use and durability needs of the bridge beam structure.

The invention discloses a semi-precast lightweight white concrete curtain wall, which is characterized in that the curtain wall is sandwich sandwich structure, and the curtain wall comprises a left side surface template, a right side surface template and a middle sandwich layer, wherein the left side surface template and the right side surface template are lightweight white concrete molding members, and the middle sandwich layer is a self-compacting concrete layer. A light white concrete component and a weight portion thereof are as follow: (img file= 'DDA0001745311660000011. TIF' wi= '700' he= '534'/) The beneficial effects of the present invention are: The invention provides a concrete curtain wall form integrating decoration, heat preservation and structure, which is neat and beautiful,the number of splicing joints is small and the weight is light.

The invention provides a gutter inlet. The gutter inlet comprises a gutter inlet well body and a gutter inlet base, the gutter inlet well body is detachably installed on the gutter inlet base, the gutter inlet well body comprises a plurality of first flank walls, the left sides and the right sides of the first flank walls are fixedly connected to each other in sequence, a first cylindrical body is formed, and first openings are formed in the lower ends of the first flank walls and used for installing reserved rainwater branch pipes; the gutter inlet base comprises a bottom plate and a plurality of second flank walls, the left sides and the right sides of the second flank walls are fixedly connected to each other in sequence, a second cylindrical body is formed, second openings are formed in the upper ends of the second flank walls and used for installing the reserved rainwater branch pipes, the lower end of the second cylindrical body is fixedly connected with the bottom plate in a sealing mode, and the upper end of the second cylindrical body is detachably connected with the lower end of the first cylindrical body in a matched mode. When the second cylindrical body is connected with the first cylindrical body in a matched mode, the first openings are connected with the second openings in a matched mode.

The invention provides a rapid construction method for a steel truss and steel box combined girder bridge in an offshore height-limited and navigation-limited area. The method mainly comprises the following steps that auxiliary piers are respectively constructed at two sides of a main navigation channel, wherein the auxiliary piers comprise a main pier, a transition pier and a temporary pier between the main pier and the transition pier, a steel beam connecting and guiding buffering device and steel beam three-way displacement adjusting equipment are installed on the tops of the auxiliary piers; and then side span construction, middle span construction, side span steel beam cantilever flange construction, closure and steel beam positioning are carried out. A non-total-section large-section installation method is adopted for the steel beam side span, a full-section large-section installation method is adopted for the steel beam middle span, the hoisting capacity of hoisting equipment can be fully utilized, and the specification of the hoisting equipment is reduced; the requirements of navigation and aviation height limitation can be met; the offshore operation amount can be reduced, and the environmental protection, safety and quality risks of offshore operation are reduced; rapid construction can be achieved, and the construction period is shortened.

The invention discloses a detachable integrated wallboard and a mounting method thereof. The detachable integrated wallboard comprises a basic board body and a basic connecting piece, wherein the basic board body comprises a basic board, an upper C-shaped card arranged in an upper groove of the basic board back surface, a middle C-shaped card arranged in a middle groove of the basic board back surface and a lower C-shaped card arranged in a lower groove of the basic board back surface; the basic connecting piece comprises an upper hook piece, a middle hook piece and a lower hook piece, the upper hook piece is matched and clamped with the upper C-shaped card, the middle hook piece is matched and clamped with the middle C-shaped card, and the lower hook piece is matched and clamped with thelower C-shaped card; when the wallboard is installed, firstly the upper hook piece, the middle hook piece and the lower hook piece of the basic connecting piece are sequentially fastened to a basic wall body through expansion bolts or steel nails; then, the upper C-shaped card, the middle C-shaped card and the lower C-shaped card of a basic board are correspondingly connected with the upper hook piece, the middle hook piece and the lower hook piece of the basic connecting piece in a clamping mode, and the basic board is fixed by adjusting a lifting threaded rod of the lower hook piece; and finally, a top line and a skirting line are buckled according to the requirement. The detachable integrated wallboard has the advantages of simple structure, convenient installation and disassembly, lessjoints, high flat degree, capable of being effectively compatible with existing and subsequent smart home equipment and the like.

The invention belongs to the technical field of water supply and drainage works, and mainly provides a construction method of a gutter inlet. Mainly by combining base skeletons and well body skeletons, which have been processed in a prefabricating yard, with multiple sets of base templates and well body templates, and then implementing concrete pouring, a purpose of prefabricating spliced gutter inlet bases and gutter inlet well bodies in batch can be achieved. With the application of the construction method of the gutter inlet provided by the invention, quality problems caused by an insufficient construction space can be effectively solved; moreover, working efficiency can be greatly improved, a construction period can be shortened and good social and economic benefits can be caused; meanwhile, the gutter inlet provided by the invention, which adopts a reinforced concrete structure, is high in compressive strength, so that the gutter inlet can adapt to demands of complex urban roads on gutter inlets; therefore, the construction method has a broad application space in construction of urban road gutter inlets and has a quite high promotional value.