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79results about How to "Reduce production workload" patented technology

Vertical assembling construction method for trussed arch bridge

The invention provides a vertical assembling construction method for a trussed arch bridge, and aims to overcome the shortcomings of large working amount and long working period of the conventional assembling method. The vertical assembling construction method comprises the following steps of: 1, manufacturing fixtures, wherein each fixture comprises a beam and vertical columns fixed at two ends of the beam; a limiting plate and a positioning plate are arranged on the upper end face of the beam; crossed supporting arms are arranged between the vertical columns of two fixtures; three fixtures are connected with one another by the crossed supporting arms to form a fixture group; and two parallel fixture groups serve as a platform for vertically assembling the trussed arch bridge; 2, assembling arch rib sections of the trussed arch bridge, and sequentially hoisting and positioning a lower chord pipe, a lower flat connection pipe, a web rod, an upper chord pipe, a vertical supporting pipe and an upper flat connection pipe on the two fixture groups; and 3, arranging a hydraulic flat plate trolley on the lower parts of the vertical columns of the fixtures, and conveying and transferring the assembled arch rib sections by the hydraulic flat plate trolley. According to the method, the fixture manufacturing working amount is reduced, the fixtures are convenient to move, and the working period can be shortened.
Owner:CHINA RAILWAYS CORPORATION +2

TIG (Tungsten Inert Gas) automatic surfacing method for projectile copper alloy conduction band

The invention aims to provide a TIG (Tungsten Inert Gas) automatic surfacing method for a projectile copper alloy conduction band by using a hot-cold wire double wire feeding system and a PLC (Programmable Logic Controller) control system. A welding process comprises the following steps of: presetting welding current, projectile body rotating speed and a rotating mode consisting of a uniform speed mode and a stepping mode by using the PLC, and introducing cooling water before ignition of welding electric arc to cool a welding gun and a projectile body, wherein the uniform-speed rotating mode is adopted during the surfacing of a narrow projectile band, and the stepping rotating mode is adopted during the surfacing of a wide projectile band; moving the welding gun to an appropriate position, igniting hot wire electric arc, welding main welding electric arc, and feeding a hot wire and a cold wire at the same time; and after surfacing and arc starting, surfacing for 5-10 millimeters at low current and low wire feeding speed. The method has the advantages of simplifying a machining process, lowering the production cost, reducing the machining procedures of the conventional process, shortening the production time, reducing the workload, increasing the production efficiency, lowering the material consumption and saving cost; and the welding process has high repeatability, and is easyto realize automatic production.
Owner:HARBIN INST OF TECH

Method for producing and assembling micro-channel heat exchanger

The invention relates to a micro-channel heat exchanger technology, in particular to a method for producing and assembling a micro-channel heat exchanger. According to the method, the problems of deformation of a core body protective plate and oxidized black residues attached to the protective plate caused by that the core body of the micro-channel heat exchanger is reinforced by a stainless steel square pipe before braze welding are solved. The method is characterized in that porous flat pipes are arranged between collecting pipes on two sides uniformly in parallel; a radiating belt is arranged between the adjacent porous flat pipes; the end parts of the parallel and symmetrical collecting pipes are plugged by end covers; partition boards are arranged in the collecting pipe; the porous flat pipes are arranged on the inner sides of the radiating belts on the edge of the length direction of the collecting pipes; upper protective plates or lower protective plates are arranged on the outer sides of the radiating belts; the protective plates and the lower protective plates are bundled by a plurality of steel belts; the core body, bundled by the steel belts, of the micro-channel heat exchanger is conveyed to a nitrogen protection high-temperature brazing furnace to be welded; and after the core body of the micro-channel heat exchanger moves out of the nitrogen protection high-temperature brazing furnace, the steel belts are removed. According to the method, no deformation defect exists, the surface is smooth, clean and attractive, and production efficiency is high.
Owner:浙江康盛热交换器有限公司

Tap hole integral pouring mud sleeve for blast furnace and manufacturing method thereof

The invention relates to a tap hole integral pouring mud sleeve, which belongs to fittings for an ironmaking blast furnace tap hole and particularly relates to a mud sleeve for opening or blocking a tap hole. The mud sleeve is made of a refractory material arranged in a mud sleeve frame, and is characterized in that the refractory material is a pouring material and is compactly filled in the mud sleeve frame. The mud sleeve frame is a box-shaped body, and a consolidated hanger is arranged at the inner side of a frame plate; the rear end of the mud sleeve frame is connected with a blast furnace shell, a door frame is arranged at the front end of the mud sleeve frame, and a template is embedded in the door frame; a pouring hole is arranged at the upper side of the template, a module is fixed on the template and is opposite to the center of the tap hole, and an iron pipe provided with a tapping channel is arranged between the module and the tap hole; and compared with the prior art, the invention has the advantages that the tap hole mud sleeve is durable, the service life is markedly prolonged, the manufacturing workload of the mud sleeve is reduced, the usage quantity and the expense of the refractory material are saved, the gas leakage is reduced, and the casthouse operation is safe; the operation under pressure can be carried out, thereby avoiding damping down due to the manufacture of the tap hole mud sleeve, ensuring the timely slag iron tapping of the blast furnace and ensuring blast furnace successful operation, energy saving, consumption reduction and yield increase.
Owner:MAANSHAN IRON & STEEL CO LTD

X-waveband dielectric horn antenna

InactiveCN108134205AWorking bandwidthThe processing technology has little influenceWaveguide hornsAntennas earthing switches associationDielectricHorn antenna
The invention provides an X-waveband dielectric horn antenna. The X-waveband dielectric horn antenna comprises a polarized sheet, filling dielectric, an inverted L-shaped probe, a core sleeve, a feedstructure and a metal shell; the polarized sheet is fixed in a groove in the top of the filling dielectric, and the top of the polarized sheet is flush with the top of the filling dielectric; a ''horizontal-line''-shaped slit is dig in a rectangular structure at the lower end of the filling dielectric, and the inverted L-shaped probe is placed in the slit; the core sleeve is hollow cylindrical dielectric and arranged on the exterior of the inverted L-shaped probe in a sleeving manner, wherein the top end of the core sleeve is flush with the bottom of the filling dielectric; the feed structureis a cylindrical metal shell and has a hollow stage-shaped interior, wherein the upper end of the feed structure and the relatively thin part at the lower end of the core sleeve are tightly matched while the bottom of the feed structure and the thinnest part of the inverted L-shaped probe jointly form a feed port; the polarized sheet, the filling dielectric, the inverted L-shaped probe, the core sleeve and the feed structure are all placed in the metal shell; the filling dielectric, the core sleeve and the interior of the metal shell are tightly matched; and the inverted L-shaped probe and themetal shell are concentric, and the probe can perform feed through the bottom.
Owner:SHANGHAI AEROSPACE ELECTRONICS CO LTD +1

Construction method for reinforcing base course and roadbed of disease road through single-hole compound grouting

ActiveCN109763391AReduce the amount of drillingImprove construction efficiencyRoadwaysDiseaseSurface layer
The invention discloses a construction method for reinforcing base course and roadbed of disease road through single-hole compound grouting. A base course grouting pipe and a roadbed grouting pipe areused for realizing the successive grouting on the base course and the roadbed under different pressures in single borehole; when performing the grouting, the grouting is firstly performed on groutingholes all around, and the grouting is performed on middle release holes after final setting, thereby realizing secondary grouting supplementary. The construction method comprises the following construction steps: drilling the holes, manufacturing grouting pipes, manufacturing ground polymer grout, inserting the base course grouting pipes, performing base course primary grouting, performing base course primary grouting, performing roadbed primary grouting, performing roadbed secondary grouting, blocking holes and constructing on a surface layer. By adopting the single-hole compound grouting technology, the grouting is performed on the base course and the roadbed in single borehole, the boring quantity is reduced; the low-pressure grouting is firstly performed at the base course, and then the high-pressure grouting reinforcement is performed on the roadbed; the grouting is firstly performed on the grouting holes all around, and then the grouting is performed on the center release holes,the grouting reinforcement quality and effect can be improved, and the grout oozing out loss can be reduced.
Owner:浩祥(福建)建设有限公司

Rubbing and chopping device of greenfeed harvester

The invention relates to a rubbing and chopping device of a greenfeed harvester. The rubbing and chopping device comprises a chopping roller assembly, a chopping chamber assembly, a rubbing block board device, bolts, nuts and gaskets. The rubbing block board device is installed on the lower portion of the chopping chamber assembly. The bolts, the nuts and the gaskets are fixed to an arc plate in the chopping chamber assembly, a cylindrical cavity is formed, and the chopping roller assembly is installed in the cavity. Due to the fact that the chopping roller assembly and the rubbing block board device are installed in the same chopping chamber assembly, the greenfeed harvester is compact in structure, the occupied space is saved, the requirements for a traveling channel of the harvester are lowered, the procedure of manufacturing a conveying mechanism is removed, raw materials are saved, the manufacturing workload is reduced, the production efficiency is improved, the manufacturing cost is saved, and economic benefits are created. Moreover, the rubbing block board device is connected with the chopping chamber assembly through the bolts, the nuts and the gaskets, a farmer can carry out maintaining and dredge block crops conveniently, convenience is provided for the farmer using the device, and the working efficiency of the farmer is improved.
Owner:YONGMENG MACHINERY CO LTD

Vertical assembling construction method for trussed arch bridge

The invention provides a vertical assembling construction method for a trussed arch bridge, and aims to overcome the shortcomings of large working amount and long working period of the conventional assembling method. The vertical assembling construction method comprises the following steps of: 1, manufacturing fixtures, wherein each fixture comprises a beam and vertical columns fixed at two ends of the beam; a limiting plate and a positioning plate are arranged on the upper end face of the beam; crossed supporting arms are arranged between the vertical columns of two fixtures; three fixtures are connected with one another by the crossed supporting arms to form a fixture group; and two parallel fixture groups serve as a platform for vertically assembling the trussed arch bridge; 2, assembling arch rib sections of the trussed arch bridge, and sequentially hoisting and positioning a lower chord pipe, a lower flat connection pipe, a web rod, an upper chord pipe, a vertical supporting pipe and an upper flat connection pipe on the two fixture groups; and 3, arranging a hydraulic flat plate trolley on the lower parts of the vertical columns of the fixtures, and conveying and transferring the assembled arch rib sections by the hydraulic flat plate trolley. According to the method, the fixture manufacturing working amount is reduced, the fixtures are convenient to move, and the working period can be shortened.
Owner:CHINA RAILWAYS CORPORATION +2

Multi-layer overhead closed conveying gallery steel pipe truss combination system

The invention discloses a multi-layer overhead closed conveying gallery steel pipe truss combination system, and belongs to the technical field of assembly type steel structures. The multi-layer overhead closed conveying gallery steel pipe truss combination system involves a plurality of transfer stations and a plurality of conveying galleries, wherein the conveying galleries are arranged between the transfer stations, and the conveying galleries running in the same transportation direction are arranged in the same vertical surface direction, and are formed into a three-dimensional overall structure in spatial arrangement; the conveying galleries on the same vertical surface share a common stand column support, the stand column support is provided with a penetrating channel, the two ends of the penetrating channel are connected with the corresponding conveying galleries into a whole, and the stand column support can be supported on the roof or the ground of the transfer stations; and the conveying galleries located on the same vertical surface are arranged to be any one or two or more combinations of single-layer conveying galleries and double-layer conveying galleries. A plurality of belts running in the same direction are arranged on the same vertical surface in a conveying mode, and meanwhile a conveying structure is subjected to three-dimensional integrated design, so that multiple purposes of a structural unit are achieved, and the effect that the single structural unit can support a plurality of belt conveyor conveying devices is achieved.
Owner:成都建筑材料工业设计研究院有限公司

Water heating blanket main unit and water heating blanket

The invention discloses a water heating blanket main unit and a water heating blanket, and relates to the technical field of water heating electric appliance electric heating. The water heating blanket main unit comprises a shell, a water tank, a combination switch, a heating structure and a water pump, wherein the combination switch, the heating structure and the water pump are mounted in the water tank, a water returning opening of the water tank communicates with a water returning joint of a cooling body, the combination switch comprises a pipe body, a water level switch and an anti-tippingswitch, the end of the pipe body is connected with the inner wall of the water tank, the water level switch and the anti-tipping switch are arranged in the pipe body and are in communication connection with a control device, the water pump comprises a pump shell connected with the outer wall of the water tank, a rotating assembly is mounted in the pump shell, a pumping-in water opening communicating with a water outlet and a pumping-out water opening communicating with a water inlet joint of the cooling body are arranged on the pump shell, and the pipe body, the water tank and the pump shellare of an integrally-formed structure. Accordingly, the production process of the water heating blanket main unit is simple, the number of production parts is small, workloads are small, product quality of one part is easily controlled, and water is not prone to leaking.
Owner:高雪娇
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