491340 results about "Structural engineering" patented technology

A golf club head including a removable weight assembly is disclosed herein. In accordance with the presently disclosed technology, the golf club head may include a striking face portion, a back portion, and a removable weight assembly. The removable weight assembly may include a removable weight and a cover portion.

A bed sheet holder includes a bracket and sleeving members. The bracket includes a bottom plate, supporting members arranged on the bottom plate, and first sliding blocks arranged on the supporting members. A first sliding slot is defined in the sleeving member. At least one end of the first sliding slot is a first opening. The first sliding block is arranged inside the first sliding slot. When the bracket is used in conjunction with a bed sheet, the bottom plate is pressed under a mattress, the supporting member is attached to an outer side wall of the mattress, the first sliding block is exposed on an outer side of the mattress, and the sleeving member is sleeved on the first sliding block through the first sliding slot, thereby pressing one part of the bed sheet between the sleeving member and the first sliding block to fix the bed sheet.

A battery pack according to one or more embodiments of the present disclosure includes a plurality of battery cells; and a housing including a bottom member, a plurality of side walls, and a top member, the bottom member, the plurality of side walls, and the top member form an interior accommodation space configured to accommodate the plurality of battery cells, wherein at least one among the plurality side walls, the top member, and the bottom member are formed by a plurality of metal sheets that are roll bonded to each other, wherein at least one cooling channel is formed between bonding areas of the plurality of metal sheets, and wherein at least one crash channel is formed between bonding areas of the plurality of the metal sheets.

A floor structure for a body of a vehicle includes two side sills spaced apart from each other in a transverse direction of the vehicle. A main floor element is disposed between the two side sills. An energy store is disposed under the main floor element. A crossmember element is disposed on an upper side of the main floor element and extends in the transverse direction of the vehicle between the two side sills. A hollow cross section of the crossmember element is delimited upwardly in the vertical direction of the vehicle by an upper flange of the crossmember element and is supplemented by the main floor element to form a closed hollow cross section. A reinforcement element is attached to the main floor element via a first attachment region and is attached to the upper flange via a second attachment region and a third attachment region.

A battery pack including a housing and a cell frame supported within the housing. The cell frame includes a plurality of openings to secure a plurality of battery cells, and a weld strap disposed within the cell frame configured to interconnect the plurality of battery cells. The battery pack also includes a cell header cover disposed adjacent to the battery cells and covering the weld strap. The cell header cover is configured to prevent battery cell particulate from circulating within the outer housing. The cell header cover and the cell frame cooperate to surround the battery cells.

To provide a seat pad capable of appropriately integrally molding a flow path lid and a duct with a pad body while suppressing leakage of a foaming raw material and to provide a mold for the seat pad.SOLUTION: The seat pad includes a pad body having a recessed ventilation passage 14, a planar duct 30 forming an inner peripheral wall of the ventilation passage 14, and a planar flow passage lid 20 covering the ventilation passage 14. The duct 30 and the flow passage lid 20 are molded in a predetermined shape in advance, and are foam-molded integrally with the pad main body. The flow passage lid 20 is set on a back surface side forming surface 5a in an overlapped state, and has a lid bending part 24 bent to the sheet surface side so as to form a recess capable of receiving a bank part 5b projecting from the back surface side forming surface 5a in its peripheral edge part 23. The duct 30 has a seat surface part 34 extending along a region deviated from the ventilation passage 14. The seat surface part 34 is applied to the projecting tip of the lid bent part 24 so as to form a first gap S1 into which the foaming material flows to the flow passage lid 20.SELECTED DRAWING: Figure 12

The present invention discloses a handheld spray fan, the handheld spray fan includes a housing assembly, fan assembly, and spray device. The housing assembly features a handheld part, an air duct at one end, and an air outlet cover at the end of the air duct with a through-hole and multiple air outlet holes. The fan assembly is installed within the air duct, and the spray device comprises a water tank, water pipe, mounting seat, fiber water guide, and atomizer. The water tank is positioned within the housing assembly, the water pipe connects the water tank and the mounting seat, the mounting seat is located at the through-hole, and the atomizer is installed on the mounting seat and exposed through the through-hole. The fiber water guide extends from the water tank to the atomizer, ensuring continuous water supply for stable misting.

A charging system can include a housing. The housing can include an inner surface. The housing also can include an internal power source. The housing further can include a component configured to draw energy from the internal power source. The charging system also can include a removable charging source. The removable charging source can be removably coupled to the housing. The removable charging source can include first and second registration structures at different locations of a perimeter of a portion of the removable charging source. The first and second registration structures can align the inner surface of the housing with the removable charging source. Other embodiments are disclosed.

A double-deck trailer with a frameless top includes two front vertical rods and two rear vertical rods respectively; each of the front vertical rods and the rear vertical rods is sequentially fixed with a top fixing piece and a middle fixing piece from top to bottom; a rectangular area is formed between four top fixing pieces and the middle fixing pieces, and a cloth pocket is arranged in the area; the cloth pocket includes side pockets and a front pocket; the side pockets are respectively located between two adjacent front vertical rods and two adjacent rear vertical rods, and the front pocket is located between the front vertical rods and the rear vertical rods; zippers are respectively arranged on both sides of the front pocket; after zippers are pulled down, the front pocket naturally hangs down, and items can pass between front vertical rods and rear vertical rods.

The invention discloses a free-form surface three-axis ball-end cutter equal approximation error finish machining tool path generation method which comprises the following steps: firstly, importing a free-form surface model to be machined, and setting data such as the radius, the line spacing, the approximation error maximum allowable value and the precision of a ball-end cutter; secondly, a group of section planes are planned according to the row spacing to intersect with the curved surface, the intersecting line serves as a cutter contact curve, and an equal-bow-height-error cutter contact iterative search method for driving cutter contact adjustment through the geometric distance is provided for the cutter contact curve on the section planes; the maximum distance between a cutter cutting envelope surface and a cutter contact track line is used as an approximation error, and an adaptive discrete method is adopted to carry out approximation error calculation; and finally, the cutter location points of the equal-bow-height-error cutter contact points serve as initial values, an equal-error cutter location point calculation method of step length self-adaptive adjustment iteration is provided, approximation errors between the cutter location points are all within an allowable range, and therefore the free-form surface three-axis ball-end cutter equal approximation error finish machining cutter path is obtained.

The invention relates to a low-loss corner-lifting and movement tearing cooperative type film tearing process of a screen display glass protective film. The process comprises the following steps: S1, tearing a film on an A surface; s2, transferring the screen display glass; and S3, tearing the film on the surface B. On one hand, in single-face film tearing, based on cooperation of the film tearing clamping jaw, the rolling wheel and the air nozzle, angle lifting is completed while the film tearing angle adhesive force is kept larger than the protective film tearing force, the damage and fracture rate of an adhesive tape and a corner is reduced, the high angle lifting success rate is achieved, meanwhile, through movement cooperation of the screen display glass and the film tearing clamping jaw, the film tearing difficulty is low, control is easy, and the film tearing efficiency is improved. The integrity and continuity of film tearing are high; on the other hand, overturning of the screen display glass is not needed in double-sided film tearing, transferring of the screen display glass is achieved in the protective film tearing process, the accidental friction rate in the glass overturning process is reduced, the structure is optimized, the layout space is greatly reduced, the equipment is miniaturized, and the double-sided film tearing efficiency of the equipment for treating the screen display glass is also improved.

The screen display glass film tearing equipment comprises a screen display glass loading unit, a film tearing unit and an adhesive supply unit, the screen display glass loading unit comprises a carrying table and a moving mechanism, the carrying table is used for positioning screen display glass downwards from a to-be-torn film, the film tearing unit is located below the to-be-torn film and comprises a film tearing head and a power device, and the film tearing head comprises a film tearing seat, a clamping jaw and a roller; the power device comprises a first power piece and a second power piece. On one hand, on the basis of movement cooperation of the clamping jaw and the rolling wheel, aligned gradual stripping of the rolling position and the stripping position of the to-be-torn film is kept, and on the other hand, the overturning angle is increased based on follow-up overturning of the extending section, so that the success rate of forming the stripping angle by inward overturning of the to-be-torn film is greatly increased; the probability that the glue is separated from the to-be-torn film or the corner of the to-be-torn film is torn is effectively reduced; on the other hand, diagonal film tearing is formed based on the relative movement of the screen display glass and the clamping jaw, the risk that the protective film is torn or falls off is reduced, and the whole film is torn off more efficiently in a more labor-saving mode.

The embodiment of the invention relates to the technical field of data modeling analysis, and discloses a tunnel rock stratum large deformation analysis method and system based on three-dimensional modeling, and the method comprises the steps: collecting initial three-dimensional point cloud data through three-dimensional laser scanning; constructing an initial three-dimensional geologic model containing spatial morphological characteristics and a rock stratum interface geometric topological relation through space coordinate matching and curved surface reconstruction; finite element unstructured mesh generation is carried out on the model, and a rock stratum mechanical analysis model is established in combination with physical and mechanical parameters; inputting construction parameters and process information, activating unit nodes in sequence, and solving a force balance equation to simulate stress distribution; identifying a potential deformation area through iterative calculation, and adjusting boundary conditions to predict a deformation trend; the three-dimensional space distribution cloud atlas, the time evolution curve and the position marks are fused to generate multi-view deformation early warning information, the accuracy and the visualization degree of tunnel rock stratum deformation analysis are improved, and support is provided for construction safety.

The invention relates to a protective film uncovering process based on corner lifting and rolling cooperation type screen display glass. The protective film uncovering process comprises the following steps: S1, corner lifting; s2, tearing off; and S3, collecting the film. On one hand, through cooperation of the film tearing clamping jaw and the rolling wheel, step-by-step peeling with the rolling position and the peeling position aligned is kept, meanwhile, the angle between the connecting section and the screen display glass is gradually increased on the basis that the connecting section is turned inwards under the condition that the adhesion section is not stressed, the success rate of forming an inwards-turned peeling angle is greatly increased, and the production efficiency is improved. The probability that the film-tearing adhesive tape is separated from the protective film or the corner of the protective film is torn is reduced; on the other hand, the complete tearing rate of the protective film is increased based on the relative movement of the glass and the film tearing clamping jaw, the tearing risk of the protective film is reduced, more labor-saving and faster diagonal tearing is achieved, meanwhile, based on pulling formed by the film collecting clamping jaw and the film tearing clamping jaw and airflow blowing cooperation formed by the film collecting clamping jaw and the film tearing clamping jaw, the completeness of film collecting is improved, and the production efficiency is improved. And the problem that the film tearing adhesive tape is adhered to the film tearing clamping jaw is solved, so that the continuity of peeling off the protective film is improved.

The invention discloses a curved surface quadrilateral dominant grid generation method, device and equipment for an aircraft and a storage medium, and relates to the technical field of computational fluid mechanics, and the method comprises the steps: creating a surface unstructured grid based on surface grid generation parameters of a CAD file of the aircraft, carrying out the conformal mapping of the surface unstructured grid to a parameter domain plane, and calculating the vertex compression ratio of each grid vertex; selecting the current starting point with the minimum compression ratio and the maximum to-be-compared vertex in the adjacency list, and determining the current to-be-processed vertex with the minimum compression ratio in the adjacent vertexes and the advancing direction; determining to-be-processed discrete points according to the current compression ratio and the coordinate information to generate a current isoline, if the current compression ratio does not exceed a threshold value, iteratively updating the current starting point, and skipping to the step of determining the current to-be-processed vertex again; the discrete points are projected to the outer-layer isolines according to the isoline sequence, and the curved-surface quadrilateral dominant grid is generated based on the distance proportion between each discrete point and the projection point, so that the generation efficiency of the curved-surface quadrilateral grid is improved.

The present subject matter discloses an outdoor storage shed utilizing molded plastic components or panels. A storage shed structure can comprise foldable corner panels and one or more interlocked teeth couplings. The foldable corner panel can pivot at integrated folding grooves to serve as corners. The interlocked teeth couplings comprise a plurality of protrusions and matched recesses arranged on both sides of engaged panels. Furthermore, the storage shed can come with pre-constructed shelf grooves in the foldable corner panels. The storage shed can have a concaved door frame and a recessed door.

The invention discloses a folding wing structure of an unmanned aerial vehicle, which comprises a rotating shaft embedded in a vehicle body, wherein a lower wing elastic sheet and an upper wing elastic sheet are mounted in an inner cavity of the rotating shaft from bottom to top, a first locking block and a second locking block are respectively arranged at the free ends of the lower wing elastic sheet and the upper wing elastic sheet, the first locking block and the second locking block are respectively matched with a first notch and a second notch which are formed in the rotating shaft, the outer side of the rotating shaft is sequentially sleeved with a lower wing and an upper wing from bottom to top, the upper surface of the lower wing and the lower surface of the upper wing are each provided with a groove, the two grooves are oppositely formed to form a torsional spring groove, a torsional spring is arranged in the torsional spring groove, and the upper inner sides of the lower wingand the upper wing are provided with a first locking groove and a second locking groove correspondingly; and the outer side of the rotating shaft is further sleeved with a roller bearing, a baffle isinstalled at the top of the rotating shaft, and the roller bearing is located between the upper wing and the baffle. The processing cost of the unmanned aerial vehicle is reduced, the folding wing structure is insensitive to the structural size, and the folding wing structure can adapt to a more miniaturized barrel-shooting unmanned aerial vehicle.

A method of assembling a box from a blank and an insulator pad includes obtaining a blank comprising an outer side panel comprising an outer fold line, a connecting strip joined to the outer side panel by a fold line, and an inner side panel connected to the connecting strip by a fold line; obtaining an insulator pad comprising an angled cut defining an edge; folding the inner side panel such that the inner side panel faces the outer side panel; and positioning the insulator pad between the outer side panel and the inner side panel such that the edge of the insulator pad is positioned at the inner fold line.

The invention discloses a numerical simulation prediction method and system for typhoon binocular wall structure reconstruction judgment and maintenance duration after terrain interference and a medium, and relates to the technical field of typhoon fine structure evolution description and numerical simulation. According to the method, the binocular wall typhoon is identified through multi-source data fusion, a high-resolution numerical simulation system is constructed, and a typhoon structure is divided into four quadrants for differential diagnosis according to the wind shear direction based on vertical wind shear phase limit analysis. And the distribution characteristics of the rapid vortex silking area are captured by calculating vortex silking time parameters. And establishing a ditch sinking airflow detection mechanism, and quantitatively evaluating the contribution of radial advection, tangential advection, vertical advection and friction force items to tangential wind evolution by using tangential wind income and expenditure diagnostic analysis. And calculating an energy growth rate, and predicting a double-eye wall maintaining time length. According to the method, the outer eye wall re-formation judgment is output, the outer eye wall radius zone, the maintenance duration interval and the uncertainty are predicted, and the method is suitable for real-time business and research.

The present subject matter discloses an outdoor storage shed utilizing plastic components or panels. A storage shed structure can comprise foldable corner panels, which pivot at integrated folding grooves to serve as corners. Each leaf of a foldable corner panel can be fitted with a unique coupling mechanism to interact with an additional panel. Furthermore, the storage shed structure can come with pre-constructed shelf grooves in the foldable corner panels. Storage shelves can be slotted into these grooves, thereby boosting the overall stability of the storage shed.

A method is provided for arranging a high-voltage accumulator having a plurality of battery modules on a support structure of a motor vehicle, in which the battery modules are arranged and fastened on a base plate, and the base plate is fastened on a bottom plate of the support structure of the motor vehicle, as a result of which the base plate and the bottom plate provide an accumulator housing which delimits an accumulator interior in which the battery modules are accommodated. At least one connection field is mechanically connected to the support structure. The connection field is able to electrically and / or fluidically connect the high-voltage accumulator to the motor vehicle.

The invention discloses a concrete internal defect quantitative detection method and system based on reflected waves, and belongs to the technical field of nondestructive testing. A reflected wave data matrix is obtained through multi-angle excitation and synchronous receiving; calculating energy characteristics of each channel, and constructing an energy response residual field; extracting waveform offset, spectrum jitter and phase change caused by defects by adopting a disturbance comparison algorithm to form a disturbance feature vector set; a defect-response function curved surface is further constructed, a defect topological structure is inversed based on gradient and curvature analysis, and defect geometric parameters are output; and finally, inputting the multi-moment defect parameters into the recurrent neural network, and predicting a defect evolution path and a failure risk. The method has high resolution and trend prediction capability, and is suitable for detection and early warning of concrete structures in bridges, tunnels and nuclear power projects.

The present invention relates to the technical field of folding carts, and in particular to a seat folding cart comprising: a front frame bottom, a rear frame bottom, a front retaining frame, a rear retaining frame, and a telescoping frame, the front frame bottom and the rear frame bottom being rotatably connected by means of connecting plates. Outer ends of the front frame bottom and the rear frame bottom at two sides thereof are stretched outwardly until inner ends of the front frame bottom and the rear frame bottom are pressed against limiting pillars, thus serving to allow the cart body to be easily folded and unfolded. When the cart body is unfolded, goods are placed on the cart body, which can then be pulled to move carrying the goods.

The application provides a razor blade opening and closing control mechanism of a shaver and the shaver, the shaver has a razor assembly, the opening and closing control mechanism has: a cover, a rotating part and a first connecting structure are arranged, the razor assembly of the shaver is connected with the cover; a supporting piece, a rotating connecting part matched with the rotating part is arranged, the cover can rotate relative to the supporting piece; a push and twist piece is connected with the cover and can move relative to the supporting piece, the push and twist piece is provided with a second connecting structure matched with the first connecting structure. The razor blade opening and closing control mechanism of the shaver provides an opening mode completely different from the existing razor blade opening and closing control mechanism, the noise is small when opening, and the defect that the razor blade will immediately pop out due to the mistaken touch of the razor blade is reduced through the arrangement of the opening and closing control mechanism.

The invention relates to the technical field of construction control, and particularly discloses a method and a system for dynamically regulating and controlling the installation precision of an inclined-span steel box arch bridge based on machine learning. Wherein the real-time data comprises real-time stress of the arch rib, real-time deformation of the arch rib, real-time environment wind speed and real-time hoisting parameters; constructing a prediction model capable of analyzing the coupling effect of the wind load and the hoisting unbalance load based on a large amount of historical construction data; inputting real-time data into the prediction model to obtain a real-time coupling effect analysis result; outputting a hoisting sequence optimization instruction based on the decision engine, the coupling effect analysis result and a preset mechanical constraint condition of the obliquely-spanning steel box arch bridge; based on the deviation between the real-time deformation amount of the arch rib and a preset installation precision threshold value, a cable force grading adjustment scheme is generated; construction efficiency of the inclined-span steel box arch bridge is effectively improved, construction safety and installation precision are guaranteed, and stability and reliability of the bridge structure are guaranteed.

Disclosed is a reusable toy water balloon, belonging to the technical field of toys. The toy water balloon includes a lower hemisphere and an upper hemisphere, where the lower hemisphere and the upper hemisphere are snap-fitted with each other, and the lower hemisphere and the upper hemisphere are connected to each other through a connecting body; hollow columns corresponding to each other are fixedly arranged in the lower hemisphere and the upper hemisphere, and magnets attracted to each other are fixedly arranged on the hollow columns; and the hollow columns in the lower hemisphere and the upper hemisphere are fixedly connected through reinforcing ribs. Meanwhile, the production of the water balloon only needs to use a group of molds, so that the use of magnet and equipment is reduced, and the process cycle is shortened.

The invention relates to the technical field of rock monitoring, in particular to a safety monitoring method and system for a rock slope, which is characterized in that an abnormal focusing area is generated through gradient change and density sudden change judgment, a basic entrance for early risk identification is constructed, the positioning accuracy of a crack sensitive section is enhanced, and the safety of the crack sensitive section is improved. The identification precision and the dynamic intervention capability of the potential risk area of the rock slope are enhanced, the linear features of the boundary response are extracted through the convolutional neural network, the identification and the reconstruction of the crack main extension path are realized, and the method combines the direction sorting and the structure continuity analysis to improve the reliability of the crack main extension path. Closed fitting and stable connection node labeling of a crack path are completed, a traceable structural framework is provided for subsequent trend analysis, dynamic modeling of crack migration evolution is achieved through comparison recognition of a displacement direction and an angle abrupt change point, a closed path grid can be constructed in a crack direction reversal area, and the dynamic modeling of crack migration evolution is achieved. And the dynamic response layout of the crack control structure is realized.

A pocketed buckling member assembly comprises a plurality of parallel strings of pocketed buckling members. Each string is joined to at least one adjacent string. Each string comprising one piece of fabric folded around the buckling members into first and second opposed plies. Pockets are formed along each string by transverse seams joining the first and second plies. At least one buckling member is positioned in each pocket. The buckling member may have additives therein.

The invention discloses a large-section long-footage mechanical blasting mixed excavation method suitable for a subway station, and relates to the technical field of underground rail transit engineering, and the method comprises the following steps: obtaining a tunnel section contour, a geologic structure and blasting parameters, building a three-dimensional blasting wave propagation inversion model, and combining geology and material heterogeneity to obtain a three-dimensional blasting wave propagation inversion model; and identifying a closed space region forming reflection interference, and predicting a space point location where blasting wave energy is abnormally accumulated. Based on the three-dimensional blasting wave propagation inversion model, the abnormal wave energy accumulation area is predicted in combination with geological heterogeneity, the high-risk blasting section is recognized, parameters are reconstructed, vibration real-time monitoring and model feedback correction are assisted, a closed-loop control system is constructed, local wave crest abnormity is effectively restrained, and the safety and controllability of large-section tunnel blasting construction are improved.