1745results about How to "Guaranteed connection strength" patented technology

The invention provides an LED (Light Emitting Diode) lamp filament and a manufacturing method thereof. An LED chip is encapsulated on the edge top surface of a thin and long sheet metal support of the LED filament innovatively, meanwhile the sheet metal is inserted into a preformed transparent plastic model frame to produce a light source, and accordingly the automated continuous production of the LED lamp filament is implemented and the problem of the facing direction strength caused by the too thin and too long metal support is solved due to the transparent plastic model frame; meanwhile the lateral direction strength of the metal support is effectively utilized and accordingly the integral mechanical strength of the LED lamp filament is ensured; the heat dissipation characteristics of the metal is directly utilized, meanwhile the heat dissipation efficiency of the LED chip is maximized through the innovative encapsulation of thermal conductive coatings, and accordingly the problem of a heat dissipation bottleneck of the LED lamp filament is effectively solved, the LED lamp filament can work at the rated power for a long time, and the cost is reduced; the LED light extraction efficiency is improved, the light attenuation is reduced, the high lighting effect and ambient light of lamp filament light emission is implemented, and the market vacancy of the existing LED lamp filament is filled through innovative fluorescence encapsulation materials.

The invention relates to the technical field of control valves, in particular to an electric valve for regulating fluid flow. The electric valve comprises a valve seat component, a nut component and a valve needle lead screw component, wherein the valve seat component comprises a valve seat and a valve core seat; the nut component comprises a nut for mounting the valve needle lead screw component; and the lower end of the nut is sleeved with the upper end of the valve core seat. By the electric valve, the lower end of the nut which is used for mounting the valve needle lead screw component is connected with the upper end of the valve core seat in a sleeved mode, so that the coaxiality of the nut and a valve port of the valve core seat is extremely easy to guarantee, the coaxiality of a valve needle and the valve core seat is higher, and the problem that the valve port is loosely sealed or is subjected to eccentric wear can be solved. Meanwhile, because the coaxiality of the valve needle and the valve port is improved, the friction force can be obviously reduced when a rotor of a rotor component rotates, and the action reliability of the electric valve can be improved.

The invention relates to a sealed small low-impact release screw bolt. The bolt comprises an inner cylinder (1), a shear pin (2), a wedge block (3), a piston (4), a sealing ring (5), a double O-shaped ring sealed baffle (6) and an outer cylinder (7). The bolt is characterized by small size, sealing type, low impact, strong connection and no pollution. Before separated, the two polars of the connected body form strong connection; and when separated, the two polars of the connected body can be safely and fast separated and generate low impact disturbance, thus the bolt is a pyrotechnic connection separating device with good comprehensive performance, and can be directly used in the stage separating systems of the missile and other spacecrafts, also provide beneficial reference for the design of the similar separating mechanism, have good application prospect.

The invention discloses a ship model hydrodynamic performance testing device. The ship model hydrodynamic performance testing device comprises an installation platform, a fixed platform, a movement platform, a six-component balance, universal hinges and six electric cylinders; the upper ends and the lower ends of the six electric cylinders are connected with the fixed platform and the movement platform through the universal hinges; the six-component balance is installed in the center of the equilateral triangle formed by three fulcrums; the six-component balance is in rigid connection with the gravity of a testing ship model; the fixed platform is installed on a trailer beam through the installation platform; the six electric cylinders carry out telescopic movement to enable the movement platform to shift and rotate in different directions, and therefore swaying, surging, heaving, rolling, pitching and yawing movements of the ship model are simulated. The invention further provides a ship model hydrodynamic performance testing method with the ship model hydrodynamic performance testing device utilized. The ship model hydrodynamic performance testing device and method can accurately simulate the multi-degree-of-freedom movements of the ship model, various hydrodynamic parameters of the ship model can be measured under different testing states by combination with the six-component balance, and the hydrodynamic performance of the ship model is represented comprehensively.

The invention relates to a pile column type concrete hollow pile pier structure. The pile column type concrete hollow pile pier structure is characterized by comprising a concrete hollow pile pier, a bridge support, a pier cover beam and a base bearing platform, a flange disc is arranged at the lower end of the concrete hollow pile pier, a reserved bolt hole is formed in the flange disc, the flange disc is connected with the base bearing platform, the flange disc and the base bearing platform are arranged in cast-in-place concrete, an upper bridge support steel plate is arranged at the upper surface of the bridge support while a lower bridge support steel plate is arranged at the lower surface of the bridge support, a flange disc is arranged at the upper end of the concrete hollow pile pier and connected with the lower bridge support steel plate, and the upper bridge support steel plate is connected with the pier cover beam. The pile column type concrete hollow pile pier structure has beneficial effects that the concrete hollow pile pier can be prefabricated in a factory, the pier length can be controlled precisely, the bearing ability of the pier is improved, the concrete hollow pile pier is connected with the base bearing platform through using the flange discs and an insert core reinforcing cage and casting concrete in place, the connecting intensity of the pier can be guaranteed, and the stability thereof is improved.

The invention relates to a magnetic adsorption type electronic building block system. The magnetic adsorption type electronic building block system comprises a plurality of electronic building block modules which are connected with each other. Each electronic building block module comprises a circuit board, a plug connector and a socket connector, wherein each circuit board is provided with three ways of signal circuits which are a positive power source circuit, a data signal circuit and a negative power source circuit, each plug connector and each socket connector are respectively comprises an insulation body and three conductive terminals, each insulation body is provided with a plurality of containing grooves, permanent magnets are arranged in the containing grooves, and the three conductive terminals are respectively connected with the corresponding signal circuits on the circuit board. The plurality of electronic building block modules include a power source and signal generation module used for providing a power source and a signal source, and the other electronic building block modules are sequentially in cascade connection with the power source and signal generation module. The magnetic adsorption type electronic building block system brings convenience to unified management of the connectors and the electronic building block modules, avoids the limitation in assemble caused by the difference of the connectors or signal passages, functions of the modules are overlapped, and the magnetic adsorption type electronic building block system is more interesting.

The invention relates to an unlocking device of a drawer panel. The unlocking device of the drawer panel comprises an adjustable seat which is arranged in the side plate of the drawer. The panel of a drawer is connected with the adjustable seat through connecting pieces. Locking mechanisms which are used for locking the connecting pieces is arranged on the adjustable seat. Each locking mechanism comprises an eccentric cam. The unlocking device of the drawer panel is characterized in that the panel is connected with more than two connecting pieces, more than two locking mechanisms are arranged on the adjustable seat, and a gear unlocking mechanism which is used for simultaneously unlocking the more than two connecting pieces is additionally arranged on the adjustable seat; and the gear unlocking mechanism comprises a movable piece and at least one unlocking gear, a gear rack is arranged on the movable piece corresponding to the unlocking gear and the movable piece is connected with the unlocking gear through the gear rack in a driving way. Since the unlocking gear is matched with the gear rack arranged on the movable piece to realize the simultaneous unlocking and disassembling of the panel and the normal working of the locking mechanism is not influenced by the length of the panel connecting pieces and the synchronism and asynchronism of inserting the panel connecting pieces, the goals of synchronously and asynchronously locking the entire drawer panel and synchronously unlocking the drawer panel are really realized and the flexibility is very high.

The invention relates to an undercarriage test load loading device. A through hole for installing an FZ loading connector and an FX loading hole for installing an FX loading connector are formed in an upper part of a loading fake wheel; one end of an FZ loading lug is connected to the FZ loading connector, and the other end of the FZ loading lug is connected to one end of a hydraulic servo actuator cylinder; the other end of the hydraulic servo actuator cylinder is arranged on a vertical column; a shaft sleeve hole for arranging the loading fake wheel on a wheel shaft of an undercarriage and a PX loading hole for installing a PX loading lug are formed in a lower part of the loading fake wheel; a PY loading hole for installing a PY loading lug is formed in the bottom of the loading fake wheel; a chain is connected to the PY loading lug; and force sensors are arranged on the upper parts of the hydraulic servo actuator cylinder and the chain. The loading fake wheel replaces an airplane wheel so as to satisfy the loading demand of a test, a connection between the loading fake wheel and the undercarriage is consistent with a connection between a real airplane wheel and the undercarriage, the transmission path of the load is constant, the accuracy of a test result will not be affected, and the loading demands of different testes in different directions can be met.

The invention relates to a single-action double-pipe coring overburden drill tool for an air down-the-hole hammer. The single-action double-pipe coring overburden drill tool comprises a central coring drill tool and an overburden drill tool. The central coring drill tool is a single-action double-pipe coring drill tool and comprises a single-action vibration reduction mechanism, an inner pipe adjusting mechanism and a coring mechanism with a bayonet device; the single-action vibration reduction mechanism comprises an impact connector, a disc spring, a bearing block, a connecting shaft, a thrust ball bearing and a radial ball bearing; the inner pipe adjusting mechanism comprises a connecting shaft, a core pipe connector, an inner pipe and a nut; the coring mechanism with the bayonet device comprises an outer pipe, an inner pipe, a connecting shaft, a core pipe connector, a coring drill bit, a rolling needle, a pawl spring seat and a pawl spring; the overburden drill tool comprises a casing, a casing connector, a casing shoe, a clamp ring and a casing drill bit. The single-action double-pipe coring overburden drill tool for the air down-the-hole hammer is applicable to relevant fields such as geological mineral exploration and engineering geological survey for complex formation with loose sand, cobbles, gravel, fracture, breakage and the like.

The invention relates to a steel structure and foundation pre-burying connection structure, which is characterized in that the pre-burying connection structure is integrally cast by a prefabricated component and a foundation bottom plate, the prefabricated component is a steel bar concrete connecting block with a connecting steel plate embedded in the upper surface, the periphery of the steel bar concrete connecting block is provided with reserved steel bars connected with steel bars arranged in a foundation, a plurality of steel structure connecting screw rods penetrating through the prefabricated component are arranged in a range of the connecting steel plate, and the lower parts of the connecting screw rods extend into the foundation. The connecting structure provided by the invention has the advantages that the connection intensity of the steel structure and the foundation can be effectively improved, the problems of bottom hollowing and the like due to non-compact casting of the bottom concrete of the traditional pre-burying component and nonuniform deformation of the steel plate and the concrete can be solved, and better technical and economic benefits are realized. The invention also discloses a construction method of the pre-burying connecting structure.

The invention provides a car front longitudinal beam structure and a preparation method thereof. The front longitudinal beam is of a hollow type cavity structure which is formed by connecting an inner plate with an outer plate along a longitudinal extension direction, and comprises an energy absorption region located at the front part of the front longitudinal beam, a support region located at the rear part of the front longitudinal beam and a transition region for connecting the energy absorption region with the support region, wherein a plate material in the energy absorption region is thinner than a plate material in the support region, and the plate material in the transition region is continuously and uniformly transitioned from the energy absorption region to the support region. The inner plate and the outer plate are connected through the adoption of a technology of combining laser welding, spot welding and cementation, so that the front longitudinal beam preparation technology is simple; the transition region of the inner and outer plates is continuously and smoothly connected with the relatively thin energy absorption region and the relatively thick support region, so that difference of front and back performances of the front longitudinal beam is realized, light weight and relatively high collision and energy absorption effects are guaranteed; energy absorbing ribs are arranged uniformly on each surface of the inner and outer plates, so that the car front longitudinal beam structure further improves collision energy absorption and is conductive to further improving car safety performance.

The invention discloses a double-tower hybrid beam cable-stayed bridge system. The double-tower hybrid beam cable-stayed bridge system comprises a hybrid beam composed of a concrete beam and a composite beam. The concrete beam and the composite beam are connected through a joint section. The concrete beam is a bilateral ribbed beam and comprises two concrete beam ribs. The composite beam comprises two main steel beams, and the main steel beams are each of an I shape and each comprise a main steel beam top plate, a main steel beam bottom plate and a main beam steel web. The joint section comprises a concrete beam rib-main steel beam connection structure composed of a front pressure bearing plate, a rear pressure bearing plate and a joint section steel web, and the main steel beam top plates and the main steel beam bottom plates stretch into the concrete beam ribs. The double-tower hybrid beam cable-stayed bridge system is reasonable in structural design, convenient to construct, high in construction speed, good in use effect and good in connection effect of a steel-concrete joint part. Meanwhile, the invention further discloses a construction method of the double-tower hybrid beam cable-stayed bridge system. The construction method includes the steps of lower portion supporting structure and main tower construction and hybrid beam construction. The construction method is simple, easy to implement, short in construction period and good in construction effect.

The invention discloses a current collector electrode structure, and relates to the technical field of secondary batteries. The current collector electrode structure in the application comprises a current collector and a tab. The current collector comprises an insulating layer and a conductive layer used for carrying an electrode active material and arranged on at least one surface of the insulating layer. The tab is arranged on the current collector and connected with the current collector through an electrolysis-resistant binder or conductive adhesive, and the bonding strength of the binderor the conductive adhesive is not less than 7N/cm. The tab and the current collector are connected by the binder or the conductive adhesive, so that welding is avoided, and the conductive layer on thesurface of the insulating layer cannot be damaged by the connecting structure of the tab. Besides, the binder or the conductive adhesive used in the application has electrolysis resistance, and the bonding strength of the binder or the conductive adhesive is not less than 7N/cm, so that the connection strength between the tab and the current collector is ensured, and the situation in which the tab is separated from the current collector in the subsequent assembly and use process is avoided.

The invention relates to a preparation method for a diamond cutting grinding piece. The diamond cutting grinding piece comprises a diamond cutting grinding piece body arranged on a 65Mn steel substrate, and corrugated water channels are formed in the surface of the diamond cutting grinding piece body. The preparation method for the diamond cutting grinding piece comprises the steps of material mixture, substrate machining, compression forming, sintering and edge forming. The diamond cutting grinding piece produced through the preparation method for the diamond cutting grinding piece has the cutting effect and the grinding effect, and is safe and reliable in performance, simple and reasonable in structure, low in manufacturing cost, flexible in operation, good in sharpness of products and good in chip-removal performance.

The invention relates to an inserting type modular steel structure connecting joint with a reset function. The inserting type modular steel structure connecting joint comprises a modular steel structure connecting joint body and self-reset haunch supports, wherein the modular steel structure connecting joint body comprises two upper module units, two lower module units, a cross-shaped inserting pin connecting piece, a vertical cover plate, a horizontal cover plate and high-strength bolts, and the four self-reset haunch supports internally provided with disc springs are symmetrically arranged at the corner parts of the joint body and are hinged to module beam columns. According to the inserting type modular steel structure connecting joint, module units are connected through the cross-shaped inserting pin connecting piece, the cover plate and the high-strength bolts, so that it is guaranteed that the joint has enough tensile strength, shear strength and bending strength, a connecting device has no need occupying the use space of a building, the application range is wide, and meanwhile attractiveness is guaranteed; and the arrangement of the self-reset haunch supports can improve thebearing capacity of the joint, delay degradation of the rigidity and strength of the joint, reduce damage to the joint beam-column intersection, avoid premature damage to components, achieve rapid repair and guarantee stability and reliability of the joint performance, and residual deformation after an earthquake is small.

The invention discloses a high integration density display screen unit which comprises a display screen unit body, wherein two side surfaces of the display screen unit body are all provided with connecting side frames, the connecting side frames of at least a left side surface and a right side surface of the connecting side frames of the four side surfaces are provided with arc-shaped connecting part installation grooves or holes, an arc-shaped connecting sliding block is arranged in each arc-shaped connecting part installation groove or the hole, and a briquetting is arranged above each arc-shaped connecting installation groove or the hole. The included angles between the outer side surfaces of the connecting side frames of at least the left side surface and the right side surface and the front surface of the display screen unit body is from 75 degrees to 90 degrees, and at least the upper side surface and the lower side surface of the connecting side frames of the four side surfaces are provided with straight connecting part installation holes. The high integration density display screen unit achieves curved surface installation of the display screen unit body, better meets market requirements and broadens application places.

The invention provides a chassis quick-changing battery box for electric automobile, which comprises a box body, the box body comprises a left side longitudinal beam and a right side longitudinal beam with a hollow beam structure, a hoisting spin lock used for cooperating with a hoisting installing hole on the automobile chassis is respectively arranged on the left longitudinal beam and the right side longitudinal beam, the hoisting spin locks are arranged on the left longitudinal beam and the right side longitudinal beam through an installation support in a cavity arranged in the corresponding longitudinal beam, and the installation support has a first connection part fixedly connected to the corresponding longitudinal beam and a second connection part fixedly connected to the corresponding hoisting spin lock. The connection strength of the hoisting spin lock on the left side longitudinal beam and the right side longitudinal beam can be effectively ensured by the installation support, self strength of the left and right side longitudinal beams can be effectively ensured, and the strength of the left and right side longitudinal beams can not be reduced, cavities at two sides longitudinal beams are effectively used, and the integral volume of the battery box is reduced.

The invention discloses an inserting type steel plate connection structure of prefabricated shearing walls. The inserting type steel plate connection structure is characterized in that an upper prefabricated shearing wall and a lower prefabricated shearing wall are assembled and connected by connecting components, and concrete is cast behind the joint positions of the upper prefabricated shearing wall and the lower prefabricated shearing wall; the connecting components comprise an epsilon type steel plate part and a Y-shaped steel plate part which are matched in a pairing manner, and the epsilon type steel plate part and the Y-shaped steel plate part are connected in a clamping manner and fastened by fasteners. The inserting type steel plate connection structure disclosed by the invention has the advantages that the two prefabricated shearing walls are assembled on a site by adopting the inserting type steel plate connecting components, and by utilization of a fixing mode with matching of the steel plates and the fasteners, the operation for workers is convenient, the construction quality can be controlled, the installation and the construction are more convenient and faster, and the efficiency is high; by adoption of the epsilon type steel plate part and the Y-shaped steel plate part, not only is steel saved, but also the rigidity and strength of node connection are improved, and the earthquake-proof requirement of strong nodes and weak members is realized; and the connection method adopts matching of clamping connection of special steel plates and fastening connection of high-strength bolts, so that double safety is achieved, the reliable connection and definite force transmission are ensured, and the connecting strength and the connecting effect are guaranteed.

The invention relates to a threaded interference fitting method and a threaded interference fitting structure for a turbine impeller and a rotary shaft. Through reasonable design of a threaded connecting structure and process diameters of a titanium aluminum turbine impeller and a 42CrMo rotary shaft, machining of titanium aluminum turbine impeller inner threads and a titanium aluminum turbine impeller matching end face and 42CrMo rotary shaft outer threads and a 42CrMo rotary shaft matching end face, threaded assembling of the titanium aluminum turbine impeller and the 42CrMo rotary shaft is achieved by heating a threaded connecting part of the titanium aluminum turbine impeller or cooling a threaded connecting part of the 42CrMo rotary shaft, blind holes of connected turbine rotary shafts are machined, elastic cylindrical pins are fitted in the blind holes, and other parts of the connected turbine rotary shafts are machined according to structural parameters of turbine rotary shafts. The advantages of threaded connection and interference fitting are combined, durable and reliable connection of the titanium aluminum alloy turbine impeller and 42CrMo alloy rotary shaft, and the connection strength requirements of the booster turbine impeller and the rotary shaft are satisfied.

The invention discloses a novel heat-insulated energy-saving aluminum-alloy window, which comprises a window frame, a window sash, window glass and a pressing bar. The window frame and the window sash both have insulating broken-bridge structures, a frame insulating penetrating bar is arranged in the window frame, a sash insulating penetrating bar is arranged in the window sash, a frame and sash intermediate rubber strip and a frame-sash sealing rubber strip are arranged between the window frame and the window sash, an outer glass rubber strip is arranged between the outer side of the window glass and the window sash, an inner glass rubber strip is arranged between the inner side of the window glass and a pressing line, one side of the inner glass rubber strip clings to the pressing line, and a gap is formed between the other side of the inner glass rubber strip and the window glass. In terms of design of section bars, both the window frame and the window sash have the insulating broken-bridge structures, the insulating penetrating bars made of micro-foaming materials are adopted in the middle of the window frame and the window sash, so that the heat transmitting path through the window frame and the window sash is blocked, and high efficiency and energy saving are achieved. The way of rolling the bars prior to penetrating the bars are both employed in the window frame and the window sash, so that sealing and shearing force of the section bars of the window frame and the window sash are guaranteed, and strength of the section bars is higher.

The invention relates to a self-tightening half grouting sleeve connecting piece mainly applied to connecting of vertical reinforcing steel bars, including connecting of shear walls, frame columns and hanging board lamps. The self-tightening half grouting sleeve connecting piece is composed of a grouting opening (1), a thick liquid discharging opening (2), poking pieces (3), threads (4), a sleeve (5) and reinforcing steel bars (6). The diameter of the sleeve (5) is larger than the diameter of each reinforcing steel bar (6). The threads (4) are arranged on the inner wall of the sleeve (5). The grouting opening (1) is formed in the lower portion of the sleeve (5), the thick liquid discharging opening (2) is formed in the upper portion of the sleeve (5), and the poking pieces (3) are arranged in the position, between the grouting opening (1) and the thick liquid discharging opening (2), of the inner wall of the sleeve (5). The self-tightening half grouting sleeve connecting piece has the effects and advantages that the self gravity of the structure is utilized to conduct structure connecting, so that the structure is firmer; the diameter is increased slightly, so that the error-tolerant rate is increased; and meanwhile, connecting force is increased due to existing of the poking pieces, so that the length of the connecting piece can be reduced properly.

The invention relates to a steel boxed cofferdam and the recovery method, especially a steel boxed cofferdam suitable for bridge bearing platforms with deep foundation and wide span, and the recovery method, comprising an upper section and a bottom section which are bolted together by a plurality of watertight angel steel flanges, wherein the upper section is composed of a plurality of upper panels made of steel sheets; each upper panel is laterally distributed evenly with a plurality of vertical ribs and vertically distributed evenly with a plurality of horizontal ribs; the upper panels are bolted together by the watertight angel steel flanges; the bottom section is composed of a plurality of bottom panels which are laterally distributed evenly with a plurality of vertical ribs; and the bottom panels are detachably fastened together. Besides the advantages of traditional caisson and steel plate cofferdam, the steel boxed cofferdam and the recovery method has other advantages of reusability, smaller influence on the neighboring constructions due to less amount of dug soil, low cost and good stability since the caisson is deeply buried to ensure a relatively large bearing and good water-resistant effect.

The invention discloses a large-deformation composite material with a flexible cellular structure and a preparation method of the large-deformation composite material. According to the large-deformation composite material, glass fiber cloth and flexible epoxy resin which need to greatly deform and are used for single-cell cell walls are molded according to a stressing property of the large deformation of the cellular structure; a large deformation function is realized by adopting the flexible epoxy resin; glass fibers and epoxy resin, which have connection effects, of the cell walls are molded; carbon fibers and epoxy resin which have connection effects on single cell lines are molded so that the high rigidity is obtained; and the requirements on bearing out-plane load and keeping the shape of the cellular structure in deformation are met. According to the method, primary paving, and primary curing and molding are adopted, and interface defects caused by secondary paving and curing are avoided; and single-cell inter-line binding force is improved, the process is simplified and the cost is reduced. The composite material with the flexible cellular structure, which is prepared by adopting the method, can be applied to a flexible supporting body of a morphing wing skin or a morphing structure.