15results about How to "Meet lightweight" patented technology

The invention provides a design method of a variable-size variable-density lattice structure wing with optimized heat dissipation load, and relates to the technical field of aerospace engineering, and the design method comprises the following steps: S10: carrying out variable cross-section design on a D-type unit to obtain a variable cross-section D-type unit, taking the variable cross-section D-type unit as a lattice unit configuration, and filling the wing to form a skin lattice structure; the skin lattice structure of the wing comprises a skin and a lattice filling area; s20, cell element variable-size design is adopted for the dot matrix units, and variable-size dot matrix units are constructed; s30, according to the stress field of the wing, cell element variable-density design is adopted for the variable-size dot matrix units, and variable-size variable-density dot matrix units are constructed; and S40, establishing a wing configuration. The variable-cross-section D-type unit is used as a dot matrix unit configuration, deep coupling of integrated design of heat dissipation and bearing performance is achieved through variable-size and variable-density design, application scenes are flexibly adjusted, and complex working condition requirements are met.

The utility model discloses an energy storage system DC cable comprising a conductor, and the outer side of the conductor is sequentially wrapped by a composite isolation layer, an insulation layer, an anti-spraying layer, a ceramic protection layer, a metal fiber shielding layer and a sheath layer. The conductor is of a layered winding structure, and the winding pitch is 6-8 times of the twisting outer diameter of the conductor. The direct-current cable of the energy storage system has excellent bending performance and tensile performance, also has excellent electrical insulation performance, and can ensure stable insulation performance in both high-temperature and low-temperature environments; meanwhile, the cable is fireproof, waterproof, damp-heat-resistant and excellent in flame retardant property; moreover, the cable can resist electromagnetic interference, thereby guaranteeing the stability of signal transmission. In addition, the cable is small in outer diameter and light in weight, and can meet the requirements of light weight and flexibility of the cable.

The application belongs to the technical field of metal materials, and discloses a high-strength and high-toughness medium-manganese steel based on warm rolling and deep cryogenic treatment and a preparation method thereof. The preparation method comprises the following steps: combining a specific warm rolling process (720 DEG C~760 DEG C) with liquid nitrogen deep cryogenic treatment (soaking for 0.3~0.6h) and supplementing low-temperature tempering (180 DEG C~220 DEG C). The process induces deformation through warm rolling, promotes the transformation and refinement of austenite into martensite in combination with deep cryogenic treatment, and then eliminates internal stress and precipitates fine carbides through low-temperature tempering, so as to synergistically control the microstructure. The technical bottleneck that the strength and plasticity of traditional medium-manganese steel are difficult to be compatible is effectively solved, and the organization is super-refined and the stability is improved. The obtained medium-manganese steel has a good match between ultra-high strength and excellent plasticity, the yield strength is greater than 1800MPa, the tensile strength is as high as 2300MPa, the elongation after fracture is more than 17%, and the comprehensive mechanical properties are significantly improved.

The utility model aims to solve the problem of light weight of a prefabricated wallboard, and discloses an integrated lightweight concrete prefabricated wallboard which comprises a wallboard body, a baffle is vertically installed in the wallboard body, a second material passing pipe and a first material passing pipe are installed on the left side and the right side of the side wall of the wallboard body respectively, a second inserting needle is installed on the second material passing pipe, and a second inserting needle is installed on the first material passing pipe. A first inserting needle is arranged on the first material passing pipe, a connecting belt is connected to the first material passing pipe, a first material storage bag and a second material storage bag are arranged in the connecting belt at intervals, the first material storage bag and the second material storage bag are both made of rubber materials, an adhesive is contained in the first material storage bag, and broken stones are contained in the second material storage bag. Through the arrangement of the connecting belt, the first material storage bag and the second material storage bag, the light weight of the wallboard is facilitated, materials can be filled in the wallboard, and the hardness of the wallboard is enhanced.

The utility model provides an oscillatory artificial rainfall simulation device which comprises a support frame, an oscillating device and an oscillating device, the output end of the linear driver is arranged in the length direction of the supporting frame; a transmission rod; the at least one group of connecting components are connected to the transmission rod; the spray head limiting blocks are fixed to the supporting frame and correspond to the moving pieces one to one, and a water return opening is further formed in one side of the bottom of each spray head limiting block; the rainfall spray head is inserted into the spray head limiting block and hinged to the spray head limiting block, and the rainfall spray head is hinged to the connecting assembly through a spray head fixing clamp; a water storage tank; a return water collecting pipe; a water return branch pipe; a water supply branch pipe; a water supply pump, a pressure gauge and a water pressure regulator; a water supply flow regulating valve; and a water return valve. According to the utility model, the rainfall spray head is driven by the linear driver to realize oscillatory swing so as to simulate rainfall.

This invention relates to the field of hot extrusion manufacturing technology, specifically to a high-strength weldable 6xxx series aluminum alloy profile, its manufacturing method, and its application. The aluminum alloy profile is composed of the following weight percentages: Si: 0.80%~1.2%, Fe≤0.20%, Cu: 0.40%~0.80%, Mn: 0.30%~0.70%, Mg: 0.70%~1.1%, Cr≤0.25%, Zn≤0.10%, Ti≤0.10%, Zr: 0.05%-0.20%, Pb<0.01%, with the balance being Al and unavoidable impurities. The profile meets the following performance requirements: tensile properties, R... m ≥420MPa, R p0.2 ≥330MPa, A 50mm ≥8.0%; Fatigue performance: at r=0.1, N=1×10 7 Under the same conditions, the fatigue strength σ of the smooth sample is ≥145MPa, realizing the lightweight manufacturing of high-speed trains.

This invention discloses a method for preparing high thermal conductivity magnesium alloy sheet, comprising: 1. preparing magnesium alloy raw materials and performing alloy melting, and casting to obtain a magnesium alloy billet; 2. homogenizing the magnesium alloy billet; 3. low-temperature extrusion of the homogenized magnesium alloy billet to obtain an extruded magnesium alloy slab; 4. high-temperature short-time heat treatment of the extruded magnesium alloy slab to obtain a heat-treated magnesium alloy sheet; 5. single-pass large-reduction rolling deformation of the heat-treated magnesium alloy sheet to obtain a rolled magnesium alloy sheet; 6. low-temperature short-time annealing of the rolled magnesium alloy sheet to obtain a high-strength, high-ductility, and high-thermal-conductivity magnesium alloy sheet. This invention employs a melting-extrusion-rolling-annealing process, effectively refining grains and improving the uniformity and density of the microstructure, enhancing forming quality, and obtaining a high thermal conductivity magnesium alloy sheet with good strength and ductility matching. Furthermore, the process is short and low-cost, making it suitable for 3C electronics, aerospace, and military applications.

The application provides a variable dihedral angle inflatable folding wing based on an electric response shape memory polymer and a control method, which comprises a wing shell, a control system and a pump; the wing shell comprises a framework, an elastic body electrothermal layer and a flexible skin, the framework comprises a wing rib and a spar, and the spar is provided with an electric response shape memory polymer; an upper air bag and a lower air bag which are not conductive to each other are symmetrically installed inside the wing contour between adjacent wing ribs; adjacent upper air bags are connected to each other, and adjacent lower air bags are connected to each other; the upper air bag and the lower air bag at one end of the wing contour are connected with the pump respectively; the control system controls the electric response shape memory polymer to conduct electricity, so that the spar generates thermal deformation; and the control system controls the pump to make the upper air bag or the lower air bag negative pressure, so as to change the upper or lower dihedral angle of the wing. The application can realize variable dihedral angle under different flight requirements.

This utility model discloses a highly integrated front connecting beam for engineering vehicles and a vehicle having the same, belonging to the technical field of automotive chassis front-end structure. The front connecting beam is located at the front of the vehicle frame and includes a left front connecting beam and a right front connecting beam. The vehicle frame includes a left longitudinal beam and a right longitudinal beam. The left front connecting beam connects to the left longitudinal beam, and the right front connecting beam connects to the right longitudinal beam. Both the left and right front connecting beams are integrally cast structures, and each has multiple mounting parts for connecting the vehicle frame and vehicle components. The highly integrated front connecting beam for engineering vehicles provided by this utility model effectively solves the technical problems of insufficient integration and complex structure of existing mid-range vehicle front connecting beams. It can directly connect a total of 18 vehicle components. Compared with traditional front connecting beams, a single front connecting beam reduces weight by about 1.5 kg, and a group reduces weight by about 3 kg. Compared with older models, it reduces the number of independent brackets on each side by two.

This utility model discloses a lock structure and a lock for bags. The lock structure includes: a connecting block, fixedly connected to one of the opening part and the main body; a latch, rotatably connected to the other of the opening part and the main body; the latch has a lock hole; and a telescopic component installed on the connecting block. The telescopic component includes a compression spring and a plug-in block. The plug-in block includes a positioning part and a mating part. The positioning part is inserted into one end of the compression spring, and the other end of the compression spring is fixedly connected to the connecting block and can drive the mating part to protrude from the connecting block. When the latch rotates to engage the connecting block, the mating part can extend into the lock hole to lock the opening part. This solves the problems of inaccurate positioning of the plug-in block and the compression spring, as well as the problem of easy detachment, improves positioning accuracy, ensures the stability and reliability of the lock, smooth operation, effectively extends the service life, and meets the needs of various usage scenarios.

The utility model discloses an electronic mechanical brake, a braking system and a vehicle. The electronic mechanical brake comprises an assembling shell, a motor, a speed reducing and torque increasing mechanism and a braking executing mechanism. The motor is arranged in the assembling shell. The speed reducing and torque increasing mechanism is arranged in the assembling shell and is in transmission connection with the output end of the motor. The braking executing mechanism is arranged in the assembling shell and is in transmission connection with the speed reducing and torque increasing mechanism so as to execute the traveling braking action, the traveling releasing action, the parking braking action or the parking releasing action according to the transmission movement of the speed reducing and torque increasing mechanism. Braking and releasing in the running process and braking and releasing in the parking process are integrated into one braking executing mechanism, the four states of running braking, running releasing, parking braking and parking releasing of a vehicle are controlled through one braking executing mechanism, and the overall structure of the electronic mechanical brake is simplified advantageously; the number of internal mechanisms is reduced, the internal structure compactness of the electronic mechanical brake is improved, and the requirement for light weight of a whole vehicle is met.

This invention provides a heat-resistant structure and a deformable wing aircraft suitable for use with deformable wing aircraft. The structure includes a shell and a deformable wing. A variable-density, temperature-resistant, and ablation-resistant composite material heat-resistant sleeve is laid on the outer side of the shell. A high-temperature alloy edge strip is installed at the leading edge of the heat-resistant sleeve's tip. The shell separates the deformable wing from the equipment. Dovetail grooves are formed on the surface of the deformable wing, and flexible dynamic sealing ropes are installed within these grooves. This invention improves local temperature resistance and local thermal structural strength by laying variable-density, temperature-resistant, and ablation-resistant composite material heat-resistant sleeves in sections on the outer side of the shell and installing high-temperature alloy edge strips at the leading edge of the heat-resistant sleeve's tip, thus achieving a lightweight heat-resistant structure. By installing wear-resistant and high-temperature-resistant flexible dynamic sealing ropes within the dovetail grooves, the flexible dynamic sealing ropes remain within the gap between the shell and the wing surface throughout the wing's movement. This solves the problem of reduced elasticity of spring tube seals in high-temperature environments, which makes it difficult to achieve high-temperature dynamic heat sealing, and thus meets the requirements for lightweight design and high-temperature dynamic heat sealing.

The invention discloses an Al-Si aluminum alloy high-strength and high-conductivity component design method and component proportion, and relates to the technical field of intelligent design of aluminum alloy materials, the Al-Si aluminum alloy high-strength and high-conductivity component design method comprises the steps that S1, a special spoon is used for scooping melt at the temperature of 730 DEG C, after the surface is initially set, the melt is immediately put into cold water for quenching, and a cylindrical test ingot with the diameter of 38 mm and the thickness of 13 mm is prepared; then surface oxide is removed through turning, an electric spark direct-reading spectrometer is adopted for measuring chemical components for three times, an average value is obtained, so that data precision is ensured, 5000 pieces of die casting production data are obtained, and a sample data set containing Al-Si series aluminum alloy multi-element mass fractions and corresponding performance indexes is obtained; the device has the advantages that the development cycle of the high-strength and high-conductivity Al-Si series die-casting aluminum alloy can be shortened, and the lightweight and bearing service requirements of automobile structural parts are met.

The application discloses anode-oxidizable super-high-strength aluminum alloy and a preparation method thereof. Al 83.85~90.46wt%, Mg 6.0~9.5wt%, Zn 3.51~5.0wt%, Si 0.025~0.45wt%, and at least one of Mn, Cu, Ti, Be, Sb elements with a total content of not more than 0.70wt%, wherein the content of Mg, Zn and Si satisfies the relationship formula: -3.3≤[(2.31×Si)+(1.76×Zn)-Mg]×100≤3.6, and the grain length-diameter ratio is ≤3. The preparation method of the aluminum alloy deformed material comprises the following steps: (1) manufacturing an aluminum alloy ingot; (2) homogenizing heat treatment; (3) processing into a processing material; (4) solid solution heat treatment on the processing material; (5) cooling to room temperature; and (6) aging treatment. The aluminum alloy has low density, high strength and excellent surface treatment adaptability.

The utility model provides a permanent magnet synchronous turbine gear motor for an elevator, belongs to the technical field of elevators, and solves the problem that the conventional similar motor is easy to vibrate during operation. The motor comprises a sports car shell and an outer cover fixed with the sports car shell, and an integrally formed gear motor shell is fixedly connected in the outer cover. The speed reduction motor shell is provided with a speed reduction cavity and a motor cavity which are perpendicular in axis and communicated with each other, the outer side face of the motor cavity abuts against the outer cover, and at least two fixing columns protrude out of the outer side of the speed reduction cavity and are fixed to the outer cover. A stator, a rotor and a motor shaft are arranged in the motor cavity, one end is connected with a motor end cover, and an encoder is arranged outside the end cover; a speed reduction shaft and a speed reduction gear are arranged in the speed reduction cavity, and the speed reduction gear is in meshing transmission with the motor shaft. The speed reducing motor is compact in structure and stable in connection, vibration of the speed reducing motor in the operation process can be effectively reduced, and the operation safety and reliability of the elevator are improved.