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414results about How to "Avoid drilling" patented technology

Bridge plug with large drift diameter and setting method of bridge plug

The invention discloses a bridge plug with a large drift diameter. The bridge plug comprises an upper joint, a central tube, a guiding shoe head and a bridge plug assembly; the upper joint is an annular part and is fixedly connected with the outer side of one end of the central tube in a sleeving mode; the central tube is a metal central tube, a soluble ball base is arranged at the end, close to the upper joint, of the central tube, and the central tube is a drillable metal part; the guiding shoe head is an annular part, is fixedly connected with the outer side of the other end of the central tube in a sleeving mode and is provided with a device used for being fixedly connected with a pull rod which is arranged in the bridge plug in a sleeved mode; the middle section of the central tube is sleeved with the bridge plug assembly which is located between the upper joint and the guiding shoe head. The invention further discloses a setting method of the bridge plug with the large drift diameter. The drilling polishing procedure of the bridge plug with the large drift diameter can be omitted, the problems of a long construction period, high operation cost and high construction risk brought by drilling polishing are solved, and the bridge plug is easier and more convenient to use and faster to construct.
Owner:JEREH ENERGY SERVICES

Multistage-buffering and height-adjustable truck tail collision avoiding device

The invention belongs to the technical field of truck tail bumper collision avoiding devices and discloses a multistage-buffering and height-adjustable truck tail collision avoiding device which comprises a rigid swing frame, a bumper and a plurality of energy-absorbing buffering and height-adjusting hydraulic cylinders, one end of the rigid swing frame is hinged on crossbeams of a truck while the other end of the same is fixedly connected with the bumper, one ends of the energy-absorbing buffering and height-adjusting hydraulic cylinders are hinged on the bumper while the other ends of the same are hinged at the bottom of a compartment of the truck, and oil incoming holes in the energy-absorbing buffering and height-adjusting hydraulic cylinders are connected with a vehicle-mounted hydraulic system of the truck; each energy-absorbing buffering and height-adjusting hydraulic cylinder comprises a cylinder body and a piston rod positioned in the cylinder body, a sealed side of each cylinder body is hinged to the bottom of the compartment of the truck while an open side of the same is in sealed sliding fit with the corresponding piston rod, the end portion of a rod body of an extending section of each piston rod is hinged to the bumper, an energy-absorbing thread is formed on the rod body of each piston rod positioned in the corresponding cylinder body and is in shear fit with the open side of the corresponding cylinder body, and an opening of each cylinder body is a shear opening; a buffering spring is mounted on the piston rod in each cylinder body in a sleeved manner, and a high-elasticity rubber pad is additionally mounted on an impact face of the bumper.
Owner:LIAONING TECHNICAL UNIVERSITY

Production method of down proof fabric

The invention relates to a preparation method of textiles, in particular to a production method of a down proof fabric. The production method of the down proof fabric sequentially includes the steps of selecting of a gray fabric, wherein the gray fabric is elastic tribute silk formed by cotton, polyester, bamboo fibers and spandex, the tribute silk is blended yarns formed by cotton fibers and the bamboo fibers in the warp direction, the cotton fibers account for 50-70%, the bamboo fibers account for 30-50%, and the tribute silk is low-elasticity network yarns and spandex core-spun yarns, sanding, rolling of wind-proof agents, wherein the vehicle speed is 60-80m/min when the wind-proof agents are rolled, specifically, the fabric after sanding processing is placed into a wind-proof agent solution at the temperature of 40-55 DEG C, the liquor detention rate is 45-65%, the wind-proof agents comprise starch composite catalysts and compounds, and the compounds are formed by compositing acrylic acid amide compounds and hydrophilia softening agents KF-896 according to the mass ratio of 2-5:1, calendaring, wherein the calendaring temperature is controlled to be at 105-115DEG C, and the vehicle speed is 30-50m/min, preshrinking and after-finishing. The down proof fabric prepared in the method has excellent air permeability and the effect of preventing down from coming out.
Owner:ZHEJIANG DAGANG PRINTING & DYEING

Display substrate, manufacturing method thereof and display device

The invention discloses a display substrate, a manufacturing method thereof and a display device, and belongs to the technical field of displaying. The display substrate comprises a substrate, a thinfilm transistor, a light-emitting device and a package structure, wherein the thin film transistor, the light-emitting device and the package structure are sequentially arranged on the substrate, thethin film transistor comprises a gate pattern, a gate insulation layer, an active layer and a source-drain pattern, the source-drain pattern comprises a source, a drain and at least one power signal line, the source and the drain are arranged in the display region, the at least one power signal line is arranged in a non-display region, at least one side edge of each power signal is coated with anelectrode block, the light-emitting device comprises a first electrode, a light-emitting layer and a second electrode which are laminated along a direction far away from the substrate, and the electrode block and the first electrode are obtained by fabrication at the same layer. By coating the side edge of the power signal line arranged in the non-display region with the electrode block, the sideedge, coated with the electrode block, of the power signal line can be prevented from being drilled, and the package reliability of the display substrate is improved.
Owner:BOE TECH GRP CO LTD

Down proof fabric

The invention relates to a textile and in particular relates to a down proof fabric. The down proof fabric is prepared by the following steps: selecting a gray fabric; sanding; rolling a down proof finishing agent at the processing speed of 60-80 m / min, namely ensuring that a sanded fabric passes through a down proof finishing agent aqueous solution at the temperature of 40-55 DEG C with the pick-up of 45%-65%, wherein the down proof finishing agent comprises a starch composite catalyst and a compound, and the compound is formed by compounding an acrylic acid acrylamide compound with a hydrophilic softening agent KF-896 in a mass ratio of (2-5):1; dyeing, namely immersing in a dye liquor, reducing and steaming, washing, oxidizing, washing, soaping, washing, drying and rolling up, wherein the dye liquor comprises dye, sodium sulphide, a wetting agent and sodium carbonate, and the thickness pick-up of the dye liquor is 60%-70%, a reducing and steaming temperature is 90-100 DEG C, and reducing and steaming time is 40-50 seconds; printing at the temperature of 100-115 DEG C; calendaring at the temperature of 105-115 DEG C and at the processing speed of 30-50 m / min; preshrinking; and after finishing. The prepared down proof fabric has excellent air permeability and an excellent effect of preventing down feather from unthreading.
Owner:ZHEJIANG DAGANG PRINTING & DYEING

Preparation method of molybdenum metal grille

The invention discloses a preparation method of a molybdenum metal grille. The preparation method comprises the steps of 1, conducting cold isostatic pressing, high-temperature sintering, hot fine forging and straightening treatment on molybdenum powder to obtain a molybdenum rod; 2, machining the molybdenum rod into spherical molybdenum powder through plasma rotating electrode powder manufacturing equipment; and 3, preparing a molybdenum metal grille molded part with the spherical molybdenum powder as a raw material through a powder bed electron beam 3D printer and then conducting annealing,hot isostatic pressing and alkaline washing in sequence to obtain the molybdenum metal grille. According to the preparation method, the molybdenum powder is prepared into the spherical molybdenum powder; the molybdenum metal grille is prepared through the powder bed electron beam 3D printer; according to the characteristics that the spherical molybdenum powder is good in fluidity, compact and uniform in particle and tight in combination after quick melting and the heat of electron beams is high, the defects that molybdenum metal is high in strength, low in plasticity, very easy to oxidize andpoor in formability and is not likely to be machined into complex structural parts and functional parts are overcome, the specification and using properties of the molybdenum metal grille are improved, and the preparation cost is saved.
Owner:JINDUICHENG MOLYBDENUM CO LTD

Double-drill bit tunnel automatic drilling machine and method

The invention discloses a double-drill bit tunnel automatic drilling machine and a method. The drilling machine comprises a crawler chassis, a control supporting box, a hydraulic control box, a centersupporting shaft, a transverse shaft, a main oil cylinder, a motor and a double-drill bit mechanism. The method comprises the following steps that 1, a hole position mark is arranged; 2, the drillingmachine carries out automatic drilling in a tunnel section by; 3, the drilling machine carries out tunnel automatic drilling; 4, percussion drill trouble shooting is carried out; and 5, steel bar drill trouble hunting is carried out. According to the double-drill bit tunnel automatic drilling machine and the method, by arranging the double-drill bit mechanism, unnecessary abrasion to a steel bardrill is reduced, and the production cost is reduced; and the working state of the drilling machine is identified through the drilling depth and the drilling speed, whether a steel bar is encounteredor not in the drilling process is detected in time, the drilling is continuously carried out by timely switching the drill bit when the steel bar is encountered, the drilling machine is prevented fromworking in an abnormal state or drilling a non-normal hole, the working reliability is high, and the drilling machine is convenient to popularize and use.
Owner:CCCC MECHANICAL & ELECTRICAL ENG

Quenching equipment for Al-Mg-Si system aluminum alloy cold drawn pipes, and quenching method thereof

The invention discloses quenching equipment for Al-Mg-Si system aluminum alloy cold drawn pipes, and a quenching method employing the equipment. The equipment comprises a transmission system, and orderly connected components of a feeding stage, a horizontal heating furnace, a quenching system, and a discharging stage. The transmission system comprises a motor, a transmission mechanism and a carrier roller transmission chain. The carrier roller transmission chain sequentially penetrates the feeding stage, the horizontal heating furnace, the quenching system, and the discharging stage. Electric heating tubes are symmetrically arranged above and below the carrier roller transmission chain in the horizontal heating furnace. The electric heating tubes are arranged in parallel with carrier rollers. A loading zone, a heating zone, a quenching zone and a fetching zone of the aluminum pipes are positioned on a same horizontal straight line. The aluminum pipes are always in a moving state. With the friction forces between the aluminum pipes and the carrier rollers on the rotary carrier roller transmission chain, the aluminum pipes move forward. During the moving process, heating and quenching are completed, and the aluminum pipes are finally delivered to the fetching zone. Therefore, hole-drilling on the end of an aluminum pipe is avoided, and a purpose of continuous feeding and quenching can be realized. With the equipment and the method, the operations of loading and fetching are simple and convenient, and the energy consumption during a quenching process is low.
Owner:JIANGSU ASIA PACIFIC LIGHT ALLOY TECH CO LTD

Tunnel drainage disease prevention processing method and system

The invention discloses a tunnel drainage disease prevention processing method, which comprises the steps of obtaining the water pressure at each point on the outer surface of a secondary lining in ablocking section in consideration of the actual longitudinal flow of underground water along the space between an initial support and the secondary lining, determining the drainage amount of a circumferential blind pipe, further determining the diameter and spacing of a newly laid longitudinal blind pipe (5) and a newly laid circumferential blind pipe (6), and finally laying the newly laid longitudinal blind pipe (5) and the newly laid circumferential blind pipe (6) in surrounding rocks at the outer side of the initial support of the tunnel, and leading the underground water outside the tunnellining to a ditch at the inner side of the tunnel by using the blind pipes, thereby fundamentally reducing the external water pressure of the lining. The invention further discloses an existing tunnel drainage disease prevention processing system, which comprises an existing tunnel main body and a novel drainage system, wherein the novel drainage system includes a newly laid longitudinal blind pipe (5) and a newly laid circumferential blind pipe (6), thereby solving a problem that the lining bears high water pressure after the blockage caused by small diameter of the original drainage blind pipe and the aging of materials, and ensuring the structural safety of the tunnel.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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