1103 results about "Structural component" patented technology

The invention discloses structural part welding equipment for bridge engineering construction, and relates to the technical field of welding equipment. The structural part welding equipment for bridge engineering construction comprises a portal frame, a chute is formed in the top of the chute plate, the chute inclines upwards in the process of being away from the portal frame, a supporting plate is slidably mounted at the chute of the chute plate, and the top of the supporting plate is a plane. When the positioning mechanism positions the plate and applies pressure to the plate obliquely and downwards, the bottom of the plate is tightly attached to the top of the supporting plate, and when the plate tends to slide relative to the supporting plate due to inertia of the plate or contact between the plates in the movement process, the friction force between the supporting plate and the plate can be reduced to the maximum degree. And the supporting plate tends to slide in a chute of the chute plate, so that the supporting plate applies pressure to the plate upwards, and the movement of the plate is limited in cooperation with obliquely downward pressure application of the positioning mechanism.

The invention relates to the technical field of aluminum alloy materials, and provides a high-thermal-conductivity 6xxx aluminum alloy, a preparation method thereof and an electronic product structural part. Wherein the 6xxx aluminum alloy comprises the following components in percentage by mass: 0.3 to 0.5 percent of Mg, 0.2 to 0.35 percent of Si, 0.08 to 0.12 percent of Ce, less than or equal to 0.10 percent of Cu, less than or equal to 0.15 percent of Fe, less than or equal to 0.05 percent of Mn, less than or equal to 0.10 percent of Zn, less than or equal to 0.05 percent of Ti, less than or equal to 0.15 percent of total impurities and the balance of Al; and Mg / Si is in the range of 1.3 to 1.5. According to the 6xxx aluminum alloy and the preparation method thereof, the content and the mass ratio of Si and Mn are accurately regulated and controlled, meanwhile, a trace Ce element is added, the thermal conductivity and the anodic oxidation performance of the 6xxx aluminum alloy are improved, solid solution and aging processes are further matched, the beta ''phase and the grain size are controlled, and the alloy has the excellent anodic oxidation performance while having the high thermal conductivity.

The invention relates to the technical field of structural analysis, and provides a structural model generation method and device based on an architectural drawing, equipment and a medium, which can reconstruct a line unit of a basic architectural drawing according to a line type assignment rule so as to realize visual distinguishing of component information. The drawing exchange format file processing library is called to accurately extract drawing information of the target architectural drawing and write the drawing information into the dictionary, so that hierarchical management and control of information can be realized, and component information confusion is avoided; each structure model standard layer is created according to the building drawing information file and the modeling information file, nodes are added to each structure model standard layer based on a node duplicate removal mechanism, and efficient node creation can be realized on the premise of avoiding repetition; structural component modeling is carried out on the basic framework according to the modeling information file and the pre-processing parameter file, pre-processing parameter configuration and model data engineering output processing are carried out on an initial structural model to obtain a target three-dimensional structural model, and therefore accurate modeling of the three-dimensional structural model is automatically achieved.

The invention relates to a side door assembly for a motor vehicle, comprising: a side frame (2) defining a door opening (7), on which side frame a side door (1) movable between a closed position and an open position is supported; and a catching device (14) comprising a mandrel element (15) arranged on the side frame side and a door-side receiving element (21) arranged on the structural component (8) of the side door (1), which mandrel element and receiving element engage with each other in the event of a deformation of the side door (1) due to an accident caused by a side impact. In order to create a side door assembly, the catch device (14) of which is not adversely affected when a vehicle occupant gets on and off, it is provided according to the invention that the mandrel element (15) is arranged behind a trim part (16) of the side frame (2) and penetrates the trim part in the event of a deformation of the side door (1) caused by an accident due to a side impact, the door-side receiving element (21) is arranged on the door-side receiving element (21).

The invention relates to the technical field of structural health monitoring and reliability evaluation, and discloses a structural component fatigue life prediction method based on a CNN-BiGRU-MHSA fusion model, and the method comprises the steps: collecting multi-source heterogeneous signals, such as strain, vibration and load, calculating crack propagation mechanism characteristics in combination with a fracture mechanics theory, and generating a physical-oriented fatigue life label. The method comprises the following steps: constructing a deep fusion network, extracting local spatial features by using a convolutional neural network, capturing a bidirectional time sequence dependency relationship through a bidirectional gating circulation unit, calculating a global feature weight by using a multi-head self-attention mechanism, and generating weighted fusion features; and finally, a predicted value is output through full-connection layer regression, and parameters are optimized based on physical tags. According to the method, effective combination of a physical mechanism and deep learning is realized, the defect of poor interpretability of a pure data driving model is made up, and the accuracy and robustness of fatigue life prediction under complex working conditions are improved.

The application relates to a vehicle body structure and a vehicle. The vehicle body structure comprises a longitudinal beam, a cross beam, a trunk, an air tank, an air pump and a rear suspension. The longitudinal beam and the cross beam are connected with each other, and the longitudinal beam and the cross beam are used for supporting other structural components of the vehicle body structure. The longitudinal beam extends into the trunk. The air pump is connected with the longitudinal beam extending into the trunk. The air pump and the air tank are arranged on both sides of the central axis of the vehicle body structure and are located close to the rear suspension. According to the embodiment of the application, the arrangement requirements of the air suspension air pump and the air tank can be met while the trunk space of the vehicle is expanded, and interference between the expanded space and other vehicle body structures of the vehicle is avoided.

The invention relates to the technical field of space environment detection, in particular to a photoelectric sensor for space dust particle size detection, which comprises an optical signal collection assembly and an electric signal conversion and acquisition assembly, and is characterized in that the optical signal collection assembly comprises a support, a front pressing plate, an optical filter and a sensor; the electric signal conversion and acquisition assembly comprises a circuit box body, a photoelectric conversion detector, a signal processing circuit board, a signal wire passing sleeve and a circuit box cover. The support of the particle size sensor is used as a main structure, and other structures are subjected to split design and integrated precision assembly, so that the processing difficulty of a complex structure is reduced, the machining precision of a single structure is effectively improved, and the form and position processing error of each structural part is effectively controlled; the non-imaging compound paraboloid condensation sensor is independently designed and processed, so that the processing precision of a product is improved; and vibration reduction design is independently carried out on internal structural components, so that the mechanical impact resistance of weak parts is improved.

The invention relates to the technical field of safe operation of power systems and motors, and particularly discloses a method for calculating a safe operation boundary of a high-inertia energy storage type phase modifier under a fault, and the method comprises the steps: building an electromagnetic field calculation model of a two-dimensional linear part and a three-dimensional end part region according to an electromagnetic design scheme of the high-inertia energy storage type phase modifier; establishing a frequency and voltage support excitation control system of the high-inertia energy storage type phase modifier, carrying out bidirectional dynamic coupling on the excitation control system and the electromagnetic field calculation model, and obtaining the frequency and voltage of a power grid through a phase-locked loop; determining the loss value of each structural member in the fault process through an electromagnetic field calculation model; according to the ventilation system structure of the high-inertia energy storage type phase modifier, a fluid and thermal coupling calculation model is established, and the loss value of each structural member is used as a heat source to be introduced into the fluid and thermal coupling calculation model; and determining the safe operation limit time of the high-inertia energy storage type phase modifier under the system frequency or voltage fault according to the maximum temperature rise allowed by each structural member.

The invention provides multifunctional energy storage concrete, application thereof and an energy storage concrete member, and belongs to the technical field of concrete. The multifunctional energy storage concrete is prepared from the following components in parts by weight: 300 to 600 parts of ordinary Portland cement, 30 to 100 parts of mineral admixture, 300 to 700 parts of quartz sand, 5 to 60 parts of conductive material, 4 to 8 parts of admixture and 120 to 250 parts of water. The conductive material is added into the concrete, and a conductive network can be formed in the concrete material, so that the concrete has electric energy storage and conduction functions. The energy storage concrete provided by the invention can be used as a structural member for energy storage, and can also be combined with other energy technologies (such as solar energy and wireless charging) to realize integration of power generation, storage and utilization.

A kit of parts for use in demountably configuring a variety of structural assemblies. A kit may comprise a plurality of cylindrical structural components configured for engagement with various types of male connector components along the sides or at the ends of the cylindrical structural components, there provided for demountable engagement of a female-end socket component at the end of another cylindrical structural component. The kit may additionally comprise components for one or more of roller carriage assemblies and / or one or more of sliding carriage assemblies configured for rolling or sliding movement along rail assemblies comprising a plurality of cylindrical, square, rectangular, or octagonal track components. The rail assemblies may be supported by bases comprising the cylindrical structural components and other components such as weight components, as well as threaded foot components or threaded caster components on which the rail assemblies can be adjustably levelled.

To provide a thin structural member which contributes to the improvement of assemblability of a vehicle body, is light-weight and has high rigidity, and a railroad vehicle that forms a floor surface with an underframe structure with such a structural member.SOLUTION: A body bolster of a railroad vehicle includes: a plurality of radial ribs arranged radially from the center of a vertical load input unit and having a shape of a protrusion on the surface of a flat plate arranged horizontally with a curvature provided in the longitudinal or width direction of a vehicle more gently as it moves away from the center of the vertical load input unit; and a circular rib arranged intermittently around a vertical load input seating surface so as to overlap the plurality of radial ribs.SELECTED DRAWING: Figure 4

The utility model provides a kind of atomization assembly and electronic atomizer, wherein atomization assembly includes outer shell, support platform, ceramic core, base and electrode nail, chamber is provided in outer shell, one end of chamber is provided with opening, outer shell further includes atomization pipe;Support platform is installed from opening to chamber, atomization pipe and the air inlet of one end of support platform are inserted, so that the inner wall of outer shell, atomization pipe outer wall and support platform form sealed liquid storage cavity;Support platform is further provided with liquid inlet channel and mounting cavity, air inlet and liquid inlet channel are communicated with mounting cavity, ceramic core is installed to mounting cavity, and one end of ceramic core and the outlet portion of liquid inlet channel abut, the other end of ceramic core is provided with electrode patch;Base is sealed to opening, air inlet hole is provided on base, electrode nail penetrates base and the end portion of electrode nail and electrode patch abut.For the utility model, the assembly difficulty between structure components can be reduced, and automatic assembly production is suitable.

This invention relates to a 1900MPa grade ultra-high strength and toughness stainless gear steel and its preparation method. The chemical composition of the 1900MPa grade ultra-high strength and toughness stainless gear steel, by mass percentage, is: C 0.08-0.11%, Cr 10-12%, Ni 2-4%, Mo 2-5%, Co 10-13%, V 0.2-0.6%, Nb 0.02-0.05%, Al 0.5-1.0%, with the balance being Fe and unavoidable impurities. Its composition design must meet the following requirements: Chromium equivalent Cr... eq It is 17~18, with a nickel equivalent (Ni). eq The martensitic transformation point is 14-15. s The temperature range is 240~280℃. Its beneficial effects are: strengthening through the composite precipitation of intermetallic compounds NiAl and M₂C carbides, combined with Cr... eq Ni eq M s A synergistic design incorporating 5%–10% metastable austenite achieves an excellent balance between strength and toughness. The resulting steel exhibits tensile strength ≥1900 MPa, yield strength ≥1550 MPa, elongation ≥13%, fracture toughness ≥80 MPa·m¹ / ², and bending fatigue limit reaching 920 MPa. It is particularly suitable for manufacturing critical structural components requiring high load-bearing capacity and high reliability, such as aircraft engines, and has broad application prospects.

[Automotive structural component die casting mold for producing a one-piece automotive structural component blank, which has a maximum longitudinal extent L in the length direction (3) of 2.5 m or more and a maximum width extent B in the width direction (4) of 1.5 m or more and wherein the sprue cavity has at least one feed area (5), wherein the feed area (5) and wherein the sprue cavity has at least one first sprue channel and at least one second sprue channel, wherein the first sprue channel extends from this feed area to at least one first transition point (8), wherein at such a first transition point (8) the sprue cavity transitions into the motor vehicle structural component cavity and wherein the second sprue channel extends from this feed area to at least a second transition point, wherein at such a second transition point the sprue cavity transitions into the vehicle structural component cavity, wherein, in the longitudinal direction between this first transition point and this second transition point, the vehicle structural component cavity is formed by a so-called vehicle structural component floor area cavity and wherein the wall thickness specified by the vehicle structural component floor area cavity for the vehicle structural component blank to be manufactured is less than 12 mm and wherein the at least one first transition point in this longitudinal direction (3) is at least 1.5 m away from this at least one second transition point.]

The invention relates to low cost high ductility cast aluminum alloys. Recycled (recycled) aluminum alloys are provided for casting into structural components, such as vehicle components. The aluminum alloys include at least 80 wt. % aluminum, 0.1 wt. % to 0.6 wt. % copper, 6.0 wt. % to 8.0 wt. % silicon, 0.10 wt. % to 0.60 wt. % magnesium, 0.10 wt. % to 0.50 wt. % zinc, 0.12 wt. % to 0.30 wt. % iron, 0.2 wt. % to 0.6 wt. % manganese, not greater than 0.15 wt. % titanium, 0.015 wt. % to 0.03 wt. % strontium, other elements in amounts not greater than 0.05 wt. % each and not greater than 0.15 wt. % total.

The utility model provides a concrete filled steel tube arch frame semi-flange connection node structure. The concrete filled steel tube arch frame semi-flange connection node structure structurally comprises a concrete filled steel tube arch frame, a semi-flange plate connection part, a screw rod, a nut, a waterproof layer and CFRP fiber cloth, the half flange plate connecting part is a half flange plate provided with a groove, and the lower half part of the connecting joint of the outer steel pipe is placed in the groove of the half flange plate and is welded with the half flange plate; waterproof layers are laid on the outer side and the periphery of the top of the connecting joint, and the waterproof layers of the connecting joint and the half flange plate connecting part are integrally bundled through CFRP fiber cloth. According to the structure, the problem of stress concentration on the contact surface of a traditional full-flange connection structure and surrounding rock can be effectively solved while the advantages of a traditional flange connection node are reserved. In tunnel engineering under the high-stress surrounding rock condition, the node structure can adapt to the large-deformation working condition of the surrounding rock, and a good choice is provided for supporting design of the concrete-filled steel tube tunnel under the complex geological condition.

The process adaptability pilot test verification evaluation method and system for the aviation structural part machining machine tool comprises the steps that the comprehensive geometric error, the motion linkage error and the machining process dynamic error of the machine tool are obtained, and a comprehensive precision evaluation model of the machine tool is established; based on a comprehensive precision evaluation model, processing efficiency adaptability evaluation is carried out on the machine tool; establishing a thermal characteristic model of the machine tool through heat source analysis, temperature field monitoring and thermally induced error modeling; establishing a resonance characteristic model of the machine tool through modal test of the whole machine and key parts and resonance characteristic evolution analysis in a processing space; and performing comprehensive process adaptability evaluation on the machine tool by combining the comprehensive precision evaluation model, the thermal characteristic model of the machine tool and the resonance characteristic model of the machine tool, and performing process adaptability pilot test verification on the machine tool based on an evaluation result.

The invention discloses a pre-welding laser cleaning method for an aluminum alloy overhaul structural part of a railway vehicle. The pre-welding laser cleaning method comprises the following steps: step 1, depainting; step 2, pre-cleaning; step 3, polishing and positioning; the limited position of the to-be-welded area is determined, a laser scanning path is planned, and a laser is started to conduct laser cleaning on the limited position; and 5, evaluating a cleaning result. Attached pollutants can be removed by depainting the aluminum alloy overhaul structural part; a large amount of loose pollutants can be removed through high-pressure water jet, and shielding is avoided; stubborn impurities, surface defects and stress concentration points can be removed through polishing treatment, and the risk that the defects are expanded into larger defects in the later welding process is reduced; by performing laser fine cleaning on the limited position, an oxide film, black ash, coating residues and the like can be removed, the cleaning area can be enlarged, the cleaning effect is further improved, a fusion environment is provided for subsequent welding repair, and therefore the welding quality is improved.

This utility model provides a miniature cofferdam cover for pile foundations. The miniature cofferdam cover includes: a pile foundation, an outer shell comprising at least two outer shell segments detachably connected around the pile foundation, and a water-stop membrane, in the form of a strip, surrounding the pile foundation with its bottom end lower than the bottom of the outer shell. A fixing clip is provided on the outer shell segment, comprising a threaded rod and a fixed end movably connected to the threaded rod. The fixed end moves towards the pile foundation under the push of the threaded rod. Connection holes and water-stop strips are provided at the edges of the outer shell segment. By using the outer shell segments to surround the pile foundation, the pile foundation is isolated from the surrounding water, providing space for water-based operations. The water-stop membrane isolates water at the contact point between the outer shell and the pile foundation, preventing external water from flowing into the outer shell from the connection point. The multi-segment connection method of the outer shell segments facilitates the transportation and installation of the outer shell. Furthermore, the structure of the outer shell, which can be completed in two segments, has fewer structural components, is easy to assemble, and saves on cofferdam costs.

A support box apparatus includes longitudinal members that span forward to aft and transverse members that span inboard to outboard between the longitudinal members. The longitudinal members and the transverse members are formed of composite honeycomb sandwich panels. The support box apparatus also includes attachment components configured to couple the longitudinal members or the transverse members to structural components of an aircraft, electrical wiring attached to the longitudinal members or the transverse members, environmental control system (ECS) ducting attached to the longitudinal members or the transverse members, and life support lines attached to the longitudinal members or the transverse members.

The present application relates to the technical field of high-temperature structural component fatigue strength design and life assessment, and particularly relates to a low-cycle multi-axial fatigue life prediction method based on powder high-temperature alloy damage mechanism. The method comprises: for the dangerous point of the component under non-isothermal multi-axial cyclic loading, calculating pure fatigue damage, pure creep damage and fatigue-creep interaction damage caused by a single load cycle; accumulating the pure fatigue damage, the pure creep damage and the fatigue-creep interaction damage to obtain the total damage of the single load cycle; taking the inverse of the total damage to predict the total failure life of the component under non-isothermal multi-axial cyclic loading. The method of the present application realizes effective prediction of the low-cycle multi-axial fatigue life of the powder high-temperature alloy component by accurately decomposing the damage of the dangerous point under non-isothermal multi-axial cyclic loading, can more truly reflect the comprehensive prediction model of the failure physics of the powder high-temperature alloy under multi-axial thermal mechanical loading, and improves the accuracy and reliability of the life assessment.

This invention belongs to the technical field of wind resistance performance assessment for the entire life cycle of high-rise steel structures, and discloses a wind-induced fatigue analysis method and its strength degradation model for centrally supported steel frame structures. The method proposed in this invention can effectively assess wind-induced structural fatigue damage and describe the strength degradation law of materials and structural components, while considering the influence of crosswind response and random variables. The steel strength degradation model established in this invention after wind-induced fatigue damage can be used to correct the material parameters of steel structures after fatigue damage, which is crucial for accurately conducting full-life-cycle reliability analysis of high-performance structures.

This utility model relates to the field of automotive structural component flatness testing technology, and discloses a flatness testing fixture, including a testing seat. The testing seat is equipped with a testing mechanism for conveniently using stripes to test the flatness of the paint surface of the automotive structural component. The testing seat also has a fixing mechanism for fixing the testing seat and testing mechanism to mark or repair defects. A top cylinder is fixedly connected to the upper surface of the testing seat, and a side hole is formed through the upper surface of the testing seat. This flatness testing fixture, with a base column and ball bearings at the bottom of the testing seat, a handle and push handle at the top, and a testing plate, a supplementary light module, and flatness stripes rotatably connected within a movable groove and support frame on one side of the testing seat, facilitates placing the testing seat on the automotive structural component using the base column and ball bearings, and using the testing plate, supplementary light module, and flatness stripes to test the paint surface of the automotive structural component.

The present invention provides a hot-rolled steel sheet for building structures, comprising a base layer, a corrosion-resistant layer, and an interfacial transition layer located between the base layer and the corrosion-resistant layer. The hot-rolled steel sheet of the present invention has a yield strength of ≥350 MPa, a tensile strength of ≥490 MPa, a yield-to-tensile ratio of 0.71 to 0.80, an impact energy of ≥190 J at -40°C, a corrosion resistance rate of ≤0.006 mm / year from sea spray, an interfacial transition layer thickness of ≤10 μm, and an interfacial shear strength of ≥252 MPa, and can be used to manufacture structural components suitable for sea spray environments. The present invention also provides a method for manufacturing the hot-rolled steel sheet.

The utility model relates to the technical field of positioning pins, in particular to an embedded type positioning pin mechanism for an automobile chassis structural part welding clamp, which comprises a connecting mechanism, a positioning pin is arranged at the bottom of the connecting mechanism, the connecting mechanism comprises a shell, an inner cavity is arranged at the bottom of the shell, and the positioning pin is arranged in the inner cavity. A first threaded hole is formed in the shell and communicates with the inner cavity, a connecting screw is in threaded connection with the interior of the first threaded hole, the positioning pin comprises a body, the top of the body is fixedly connected with a connecting block, the connecting block is located in the inner cavity, a second threaded hole is formed in the connecting block, and the second threaded hole communicates with the first threaded hole. The second threaded hole is located under the first threaded hole, and the bottom of the connecting screw is in threaded connection with the interior of the second threaded hole. The utility model provides a separable positioning pin mechanism, which can prevent the positioning pin from being too long to influence the welding of an automobile chassis structural member.

The invention discloses a quick-change injection mold for an optical structural member, and relates to the technical field of injection molding.The quick-change injection mold comprises an upper mold assembly, a lower mold assembly, a front mold core and a rear mold core, the upper mold assembly and the lower mold assembly are locked and connected through a first mold locking buckle, and the upper mold assembly comprises an upper mold plate; at least two first positioning rods which are distributed diagonally are mounted on the upper template; the lower die assembly comprises a lower die plate, at least two second positioning rods distributed diagonally are installed on the lower die plate, and the second positioning rods correspond to the first positioning rods one to one. A first positioning sleeve matched with the first positioning rod in an inserted mode is fixedly connected into the front mold core, a second positioning sleeve matched with the second positioning rod in an inserted mode is fixedly connected into the rear mold core, and the rear mold core and the front mold core are connected in a locked mode through a second mold locking buckle. The front mold core and the rear mold core are used for injection molding of a product with a water gap frame. The injection mold solves the problem that in the prior art, precision and rigidity are difficult to balance when optical structural parts related to injection molds are produced.

The application provides a fatigue test method and device for a target test piece and a train, and can be applied to the technical field of vehicle structure component testing. The method comprises the following steps: determining a target vibration speed amplitude according to an initial displacement amplitude corresponding to a test stress parameter and an initial vibration frequency corresponding to the target test piece; obtaining a test operation frequency corresponding to the test stress parameter determined by controlling the test device to perform fatigue test on the target test piece according to the target vibration speed amplitude, wherein the test operation frequency represents the number of stress application operations performed by the test device on the target test piece under the condition that the target test piece reaches a preset fatigue damage judgment condition; performing curve fitting on a plurality of test stress parameters and a plurality of test operation times corresponding to the plurality of test stress parameters to determine a target fatigue curve; and determining a fatigue state test result for the target test piece according to the target fatigue curve.

The battery pack (PB) is designed to be mounted under the body floor (CA) of an electrified vehicle and incorporates an anti-buckling fastening device (DAF). This device includes at least one omega-shaped reinforcement (OR) attached to a structural part of the pack and arranged so as to be able to be fixed to a mechanical interface (PM) of the vehicle's body floor, thus ensuring anti-buckling fastening. According to the invention, the structural part comprises a support structure (SP) arranged between two adjacent structural cross members (TSB1, TSB2) of the battery pack and fixed to them. The support structure includes a mechanical fastening support (PF1, PF2) for the omega-shaped reinforcement, and the mechanical fastening support is located on the support structure at a predetermined position between the two adjacent structural cross members. Figure 2

This item is a housing for equipment such as devices for inspecting cylindrical motor cases and metal structural components such as piping. The four parts A, B, C, and D attached to the housing shown in the reference diagram are as follows: (A) Touch panel: Used for operating the entire device and setting parameters for movable parts. (B) Center button: Used for simultaneous two-handed start operation and emergency stop operation of the device. (C) Display: Used to display image inspection results and inspection data. (D) Keyboard and mouse: Used for setting image processing parameters.