465results about How to "Improve the strength of force" patented technology

The invention discloses a cooling structure of a flame tube of an aero-engine combustor. The cooling structure comprises a flame tube wallboard. The flame tube wallboard comprises an outer wallboard body and an inner wallboard body. The inner wallboard body is provided with a plurality of diffusion holes, the outer wallboard body is provided with a plurality of impact holes, and all the diffusion holes and impact holes are distributed in a crossing mode. Meanwhile, the inner wallboard body and the outer wallboard body are connected through a plurality of pin fins. The flame tube wallboard is divided into two parts in the axial direction, namely, a front flame tube wallboard segment close to a high-temperature area of the combustor and a rear flame tube wallboard segment far away from the high-temperature area of the combustor. The aperture of the front-segment impact holes in the front flame tube wallboard segment is larger than that of the rear-segment impact holes in the rear flame tube wallboard segment, and meanwhile the aperture of the front-segment diffusion holes in the front flame tube wallboard segment is larger than that of the rear-segment diffusion holes in the rear flame tube wallboard segment. Therefore, a traditional flame tube wall cooling structure is improved, and on the premise of not increasing cold capacity, the cooling potential of the cooling structure is fully tapped, and cooling efficiency is improved. Meanwhile, too large heat stress caused by the excess temperature and uneven temperature distribution of the wall of the flame tube is avoided.

The invention discloses a ball body of a rupture-preventing heavy-caliber composite ceramic ball valve, the composite ceramic ball valve and manufacture methods of the ball body and the composite ceramic ball valve. The ball body of the rupture-preventing heavy-caliber composite ceramic ball valve is formed by assembling a ceramic cylinder, a metal ring, a left ceramic spherical cap and a right ceramic spherical cap, the metal ring is fixed in the center of the outer wall of the ceramic cylinder, the metal ring is combined with the ceramic cylinder by adopting a hot charging process or cement process, the left and the right ceramic spherical caps are sleeved outside the ceramic cylinder and then transferred to a center line for covering the metal ring, end faces of the left and the right ceramic spherical caps are tightly fitted, high-temperature and high-strength glue is filled between the left and the right ceramic spherical caps and used for firmly adhering the left and the right ceramic spherical caps, and the metal ring is provided with an arc-shaped groove matched with a valve rod or milled with an elliptical hole matched with the valve rod. The invention also discloses the composite ceramic ball valve comprising the ball body, and the manufacture methods of the ball body and the composite ceramic ball valve. With the adoption of the composite ceramic ball valve, the difficulty of incapability of producing the heavy-caliber composite ceramic ball valve is solved.

The invention discloses a metal spring leaf, which comprises a contact part, bending parts extending from two bottom ends of the contact part respectively, and fixing parts extending from the bending parts respectively, wherein the contact part is provided with a contact end contacting a conducting device; the bending parts and the contact part are elastic; and the fixing parts are used for fixing the metal spring leaf on a PCB board or other electronic devices. Relative to a relevant technique, because the two ends of the contact part are provided with the bending parts by extending to increase a stressed direction and make the stress strength at a contact end stronger, the metal spring leaf is difficult to damage.

The invention provides a manufacturing method of a grinding-free drill bit, which comprises a drill body and a detachable cutting blade connected on the front end of the drill body; the manufacturing method is characterized by comprising the following steps: (1) according to the set depth and width, the front end of the drill body is equipped with a spiral groove for holding the cutting blade; both inner side walls of the spiral groove are arcwall faces, and the two arcwall faces are of central symmetry, so that the entire outline of the spiral groove is of S shape; each arcwall surface is a parallelogram after being unfolded; (2) the cutting blade with side walls being two symmetrical arcwall faces and matched with the inner wall shape of the spiral groove is prepared; (3) the cutting blade is placed into the drill spiral groove, and connected to prepare the grinding-free drill bit. No sequence exists between step (1) and step (2). The manufacturing method also provides the grinding-free drill bit prepared by using the method.

The invention discloses an annealing system for multi-strand superfine copper wires. The system comprises a wire payoff rack, a first capstan, a first drying oven, a water tank, a felt, a second capstan, a second drying oven, a cooling gas blowing kettle and a wire winding disc, wherein a gas outlet of the cooling gas blowing kettle is located on an outlet of the second drying oven. The invention also discloses an annealing method by the annealing system for multi-strand superfine copper wires. With the adoption of the method provided by the invention, the time, electricity and power can be saved and large output is obtained; and meanwhile, the produced superfine copper wires is strong in antioxidant capability and long in service life.

The invention discloses a cold heading forming technology of an eccentric flange nut with bosses and a combined mold applied to the cold heading forming technology. The cold heading forming technologyof the eccentric flange nut with the bosses comprises the steps of a blanking process, a shaping process, a punching process, and three heading forming processes and an eccentric flange forming process sequentially following the shaping process; in the three heading forming processes, a forward flange section, a hexagonal prism section, and a boss section are sequentially formed in a blank threetimes, kidney-shaped counterbores with sequentially increased depths are formed in the blank three times, and kidney-shaped locating holes with sequentially increased depths are formed in the blank three times; the forward flange section is coaxial with the hexagonal prism section and the boss section; and in the eccentric flange forming process, the blanking process is conducted on the forward flange in the axial direction to form the desired eccentric flange section. The cold heading forming technology of the eccentric flange nut with the bosses has the advantages that the technology is simple, the production efficiency is greatly improved, the production process is stable, the stripping is convenient, the service life of the mold is prolonged, the flange face of the formed eccentric flange nut is uniform and attractive, and the product precision is high.

A side release buckle includes a male member having two forward extended elastic retaining arms, each of which has a curved outer sidewall with a retaining shoulder portion formed near a proximal end thereof and a downward locating block; and a hollow female member having a front opening and two side openings, and two projected stoppers. The curved outer sidewalls of the retaining arms enable the male member to slide into the front opening of the female member from an angular position, and the engagement of the male member with the female member at the retaining shoulder portions and axially front ends of the side openings and at the locating blocks and the stoppers provides the buckle with enhanced force-bearing strength to prevent the male and the female member from easy breakaway.

The invention discloses an aluminum alloy material used for manufacturing a bicycle frame and a production process for the aluminum alloy material. The production process comprises the following steps: firstly, putting a small part of aluminum leftover waste materials into a furnace for bottoming, and then, adding Si, Fe, Cu, Mn, Cr and V according to the components; carrying out ignition heating and smelting while fire is needed to be ceased and waste materials are added, repeating the step until all wastes are added into the furnace, and controlling the temperature of molten aluminum to be lower than 950 DEG C; adding a fluxing medium into the furnace, slagging off from the interior of the furnace, and completely slagging visible impurities on the surface of the molten aluminum off the furnace; adding magnesium into a prefabricated iron cage, and then, inserting the prefabricated iron cage into the molten aluminum until magnesium is completely molten; and refining, carrying out test in front of the furnace, slagging off for the second time, stewing, and carrying out cast molding. The aluminum alloy material can improve the mechanical strength and the mechanical property of the bicycle frame, and can reduce the weight of the bicycle frame.

The invention discloses a construction method for additionally arranging of elevators to an existing multi-storey residence. The construction method comprises the steps of construction preparation, excavation of an elevator foundation pit and installation of a base of an elevator shaft, construction of the top of the elevator shaft, installation, connection and fixation of the elevator shaft, installation and trial operation of the elevator and periodic maintenance and repair. The elevator foundation pit is arranged on an original foundation of the existing multi-storey residence, and the baseof the elevator shaft is fixed on the original foundation of the existing multi-storey residence. The installation, connection and fixation of the elevator shaft comprise the installation and fixation between elevator shaft main supporting columns and the installation and fixation between the elevator shaft and the existing multi-storey residence. According to the arrangement, reasonable workingprocedures are conducive to the smooth construction and follow-up stable operation of the elevator, and at the same time, the connection relationship and structure of the base and supporting columns of the elevator shaft are further opened, so that the connection between the elevator and the existing multi-storey residence is firmly and stably, the operation of the elevator is guaranteed to a certain extent; and the structure and method for reinforcement can be widely applied to the additionally arranging of elevators in various buildings.

The invention provides a front auxiliary frame. The front auxiliary frame comprises a front auxiliary frame body and a front side component. The front auxiliary frame body comprises an upper plate and a lower plate, the upper plate and the lower plate are connected together, and a front mounting support of a lower suspension arm and a rear mounting portion of the lower suspension arm are arranged between the upper plate and the lower plate. The front side component is used for connecting the front auxiliary frame body onto a vehicular body. The front side component and the front mounting support are integrally formed by punching, and the front side wall of the front mounting support is connectedly welded to the upper plate or the lower plate while the bottom wall is connectedly welded to the lower plate to form a front-rear double-layer reinforcement structure and an upper-lower double-layer reinforcement structure. A cushion plate is welded between two side walls of the front side component, and the cushion plate and an upper end cover of the front side component jointly clamp a sleeve. The front auxiliary frame has the advantages of high strength, convenience in welding and high positioning precision.

The invention relates to a broken tooth fastening device of a giant gear and a repair method. The repair method comprises the following steps of (1) polishing; (2) detecting; (3) drilling: uniformly drilling at least three drilling holes in each tooth root repair surface of the gear; (4) fastening: respectively performing interference driving on metal bars into each drilling hole of the step (3), using the metal bars as reinforcing ribs in the repair gear, and welding the metal bars and the gear into a whole; (5) welding; (6) recovering. The invention further discloses the broken tooth fastening device of the giant gear. According to the broken tooth fastening device and the repair method, on one hand, the hardness and mechanical strength of the tooth surface of the gear can be greatly increased, thereby prolonging the service life of the gear, and the operating reliability is high; on the other hand, the operation is simple, the repair speed is high, and postweld heat treatment is not needed, so that equipment cannot be delayed for a long time so as not to cause heavy losses due to shutdown, the cost is greatly reduced, and economic benefits and social benefits are effectively increased.

The invention discloses an automobile rear frame assembly and an automobile, relates to automobile parts techniques and solves the problem that the application of the prior rear frame assembly causes inefficiency of collision energy absorption and ease of oil tank damage and decreases safety of the automobile. The automobile rear frame assembly according to the embodiments comprises a rear impact beam; rear rail structures identical to each other are fixed to two ends of the same side of the rear impact beam; each rear rail structure comprises an outer longitudinal side member and an inner longitudinal middle member, the longitudinal side member and the longitudinal side member gather at the rear impact beam and then split and extend in parallel; the part, from the gathering position to the extension end, of each longitudinal side member is in arc structure, and the part, from the gathering part to the extension end, of each longitudinal middle member is in an arc structure; a rear cross beam is fixed between the longitudinal side members; the longitudinal middle members extend to the rear cross beam from the gathering positions; an oil tank is fixed on the longitudinal middle members; a connecting beam is fixed between the longitudinal middle members, corresponding to an oil tank area. The automobile rear frame assembly is mainly applied to automobiles.

The invention discloses a method for improving the adhesion quality of a polymer three-dimensional printed product by using an instant adhesive. The method comprises the following steps: (1) uniformly mixing polymer raw materials added with an adsorbent, and then printing filaments through common plastic extrusion; (2) putting the filaments prepared in the step (1) to a polymer three-dimensional printer, and carrying out layering according to a three-dimensional model to be printed to obtain three-dimensional processing data of each layer and then carrying out an operation of three-dimensional printing; (3) in a printing process, uniformly adding the instant adhesive to certain layer of several layers of an object to be printed. According to the method disclosed by the invention, the problem that the three-dimensional printed product internally has higher porosity can be solved by adding the instant adhesive, and therefore the adhesion quantity and a stress strength between two layers can be improved by adopting the method; from the view of the effect, the adhesion strength of the printed product can exceed over 30% of that of a common three-dimensional printed product, and the tensile strength of the printed product can basically reach that of a common injection.

The invention discloses a transformer rack assembling method which employs an embracing hoop. The method comprises the following steps: 1, embracing and sleeving two hoop plates on an auxiliary pole, clamping U-bars with corresponding thickness between long ears of the two hoop plates; 2, placing the long ears on the both outsides of the auxiliary pole, then locking the two hoop plates by a bolt connection piece connected and fixed on the two hoop plates, the connecting piece being used for detaching locking mechanism, 3, arranging two mounting clamp plates which are used for bearing the transformer at the two sides of the auxiliary pole and a main pole, and arranging the two mounting clamp plates on the two long ears of the hoop plates in a clamping manner. The embracing hoop applied to the auxiliary pole mounting of the transformer and the transformer rack assembling method have the advantages that the structure is simple, the difficulty of mounting is reduced, the effective mounting can be carried out in a manner that the situation that the circular diameter gap of the two poles is large is overcome, and the requirements on the mounting and designing are better met.

The invention discloses a fiber-fabric-composite-material structural piece. The shape of the structural piece is tubular, and the tubular structural piece is a fiber-fabric-composite-material honeycomb tube supported by a fiber-fabric composite material. The fiber-fabric composite material is prepared into the honeycomb-shaped-support tubular structural piece, when the structural piece prepared with a method is stressed, bearing force can be distributed all honeycomb-shaped branches and are evenly distributed on the structural piece, and the whole stress degree of the structural piece is enhanced; a common carbon fiber composite material can bear high pressure, but the pressing bearing capacity is low, an in-tube support of the structural piece is achieved through the honeycomb-shaped carbon fiber fabric composite material, the structural piece can bear pressure to a certain degree, and the stress range and the stress direction of the structural piece are widened. According to the fiber-fabric-composite-material structural piece, the structural piece is prepared into a honeycomb shape, compared with a solid structural piece, in the fiber-fabric-composite-material structural piece,materials and the weight are reduced, the cost is saved, and meanwhile compared with a hollow structural piece, the fiber-fabric-composite-material structural piece has the higher stress capacity.

A battery connection module comprises: a plurality of bus members, two bridging bus members, a flexible circuit board, an electrode unit and a power connection strip. Each bridging type bus member isprovided with a first bus section suitable for being electrically connected with a first battery pack, a second bus section suitable for being electrically connected with a second battery pack, and abridging section connected between the first bus section and the second bus section. The flexible circuit board comprises an extension arm and a temperature sensor arranged on the extension arm, and aconcave part for correspondingly accommodating the temperature sensor is formed in the bus member. The electrode unit comprises an electrode slice lapped on the bus member, an electrode slice holderfor holding the electrode slice, and a power connection seat arranged on the electrode slice. The electric power connecting strip is provided with an electric power connector which is in butt joint with the electric power connecting base through a buckling structure, an alignment structure, a fastener and a sleeve.

The application of the present invention discloses a wine storage device, which comprises a tank body with an open top and a lid used to cover the tank body; the tank body has a side wall; And extend into the wine delivery pipe inside the tank; the lid is sealed with a baffle extending into the tank to seal the wine delivery pipe; the baffle is provided with a sliding part used to make the baffle slide up and down on the cover And a rack part in the shape of a rack located below the sliding part; a cross bar is connected between the other two side walls of the tank body; a gear meshing with the rack part and a cam driven by the gear are connected to the cross bar in rotation; The cams and racks are alternately arranged; the bottom surface of the cover is provided with grooves, and the airbags and movable blocks that can slide along the grooves and extend out of the grooves are sequentially arranged in the grooves; the movable blocks An extraction hole that can communicate with the wine delivery pipe and the outside world is arranged on the top.

The invention discloses a long-life fixing device applied to installation connection of anti-shock support-hangers. The long-life fixing device comprises a fixing sleeve, a fixing plate, a first pressure-resisting spring, a second pressure-resisting spring, a first movable rod, a second movable rod, fixing rods, left clamping blocks, right clamping blocks, a clamping plate, a screw hole, a fixingblock, a connecting rod, a main limiting rod, a mounting plate, mounting holes, connecting parts, channel steel plates, limiting holes, articulating shafts, fixing lugs, first secondary limiting rods, buffer springs, second secondary limiting rods, fixing holes and a vibration sensor. According to the long-life fixing device disclosed by the invention, the three limiting rods can be used for connecting the support-hangers so as to prevent occurrence of a situation that the use of a pipeline system is affected by loosening of a single support-hanger; the limiting rods are connected with the overall long-life fixing device by the connecting parts, so the installation efficiency of the support-hangers is improved; the fixing sleeve is connected with the movable rods by virtue of the pressure-resisting springs; and the middle part of each limiting rod is provided with the corresponding buffer spring for achieving a buffering effect when the support-hangers are loosened, so the service life of the pipeline system is prolonged.

The invention discloses a composite structure of locally applying a skin on a truss, comprising a truss and a purline, wherein a skin steel plate is paved on the upper surface of the truss or the lower surface of the truss, and the purline is arranged above the skin steel plate. The invention also discloses a method for analyzing and calculating the safety of the composite structure. According to the invention, the work of modeling is small, the practical operation is simple, the calculation is simple, convenient and accurate, the quantitative analysis of the skin effect can be realized, the bearing behavior of the skin steel plate can be fully presented, the bending resistance, tensile strength and compressive strength of the truss or lower members connected with the skin steel plate are greatly enhanced, the tensile strength and compressive strength of top flanges of the members or top chord of the truss are actually enhanced; and the main structure of buildings can be designed reasonably, thus the technical effects of strengthening structure space stiffness and reducing the consumption of structural steel.

The invention discloses a process for collecting and production of regenerated concrete. The regenerated concrete includes, by weight, 965-1328 parts of primary aggregate, 659-1123 parts of recycled aggregate, 566-720 parts of cement; 231-322 parts of fly ash, 118-266 parts of blast furnace slag, 25-55 parts of a water reducing agent, 221-308 parts of water, and 18-45 parts of a pore space regulator. The water reducing agent consists of sodium methylene dimethyl bisnaphthalenesulfonate polymer and a beta naphthalene sulfonate-formaldehyde condensate in a weight ratio of 1:1.5-3.5. The pore space regulator includes a sustained release agent and a swelling agent, in a weight ratio of 1:0.5-0.8, which are capable of releasing carbon dioxide. Through the arrangement, the recycled aggregate reasonably replaces a part of the primary aggregate, the fly ash and the blast furnace slag are adopted for improving concrete workability, water is reduced through the water reducing agent so as to reduce pores generated after water evaporation, and most pore space can be filled or sealed with the pore space regulator, thus improving inner structure of concrete, enhancing stress strength of concreteand improving the grade of impermeability.