1944 results about "Cross over" patented technology

The present application relates to the field of water toys, in particular to a toy water ball. The toy water ball includes a mounting frame including a first surface and a second surface arranged oppositely arranged; a magnetic member is not exposed on the second surface; a first connecting rib and a second connecting rib, that cross over a side of the magnetic member close to the first surface to connect the mounting frame surrounding the magnetic member, are provided on the first surface; and the first connecting rib and the second connecting rib are arranged crosswise, and a cross position corresponds to the magnetic member. The magnetic member can be firmly restricted within the mounting frame. Even if it is pulled with a relatively large force during use, the magnetic member will not fall out, which greatly improves the safety of the product.

An implantable prosthetic device can include a radially expandable and compressible annular frame comprising an inflow end portion and an outflow end portion, and a plurality of leaflets arranged within the frame. Each leaflet can include one or more commissure tabs. The commissure tabs of two adjacent leaflets coupled to a commissure attachment member to form a commissure. The commissure can be secured to the frame via first and second sutures, each suture extending through a respective commissure tab, through the commissure attachment member, crossing over the other suture and being secured to the frame. The commissure can define a bending axis disposed radially inwardly of the frame such that a main body of each leaflet is prevented from contacting the frame when the valvular structure is in an open configuration.

The embodiment of the invention relates to a multi-round medical image annotation method and device introducing a cross validation mechanism, and the method comprises the steps: transmitting a first image to a plurality of expert annotation interfaces, and merging the feedback annotation sets of all interfaces to obtain a first annotation set; setting cross validation items of every two annotation boxes in the first annotation set and constructing a corresponding cross validation matrix; on the basis of a cross validation matrix, dispute-free annotation box extraction, dispute-free annotation box aggregation and consistency score estimation are carried out; if the score is lower than a threshold value, a round of multi-person labeling is initiated again, otherwise, when the dispute labeling box set is empty, the non-dispute labeling box set serves as a final labeling result, when the dispute labeling box set is not empty, reexamination is conducted on the dispute labeling box set, and a set of the reexamination result and the non-dispute labeling box set serves as the final labeling result. According to the method, the labeling error of each image can be reduced, the overall labeling quality of all the images is improved, and the stability of the overall labeling quality is guaranteed.

The invention relates to the technical field of bearings, in particular to a bearing of a harmonic reducer. The operation working condition of the harmonic reducer is relatively complex, and the phenomena of oil seepage and oil leakage are serious sometimes, so that sealing failure is caused. And meanwhile, the cross bearing is not provided with a retainer, so that the rigidity and the bending resistance of the cross bearing cannot meet expected requirements. A bearing of a harmonic reducer comprises two outer rings, and the two outer rings are doubly fastened by a fixing mechanism and a guide mechanism; inner rings are arranged in the two outer rings and extend out of the outer rings; a retainer with an inclined angle is arranged between the two outer rings and the inner ring, a plurality of roller pins are arranged in the retainer, and the roller pins are of a double-row structure; and one ends of the outer ring and the inner ring are provided with sealing mechanisms with keeping elasticity. The starting torque of the retainer can be optimized by more than 10%, which is favorable for saving energy and keeping the stability of the motor. And the arrangement of the double rows of roller pins and the retainer can reduce the overflow of grease.

Embodiments included herein are directed towards a method for use in an electronic design. The embodiments may include causing, at a graphical user interface, a display of a portion of the electronic design. The method may further include determining a location of a mouse cursor at the graphical user interface. The method may also include automatically displaying at the graphical user interface one or more shapes associated with a current fabric. The method may additionally include automatically performing a cross fabric shape query associated with the location of the mouse cursor. Furthermore, the method may include automatically displaying one or more cross fabric shapes at the graphical user interface.

The invention relates to a three-degree-of-freedom redundant parallel mechanism suitable for a wave compensation ship and a compensation method thereof.The three-degree-of-freedom redundant parallel mechanism comprises a lower deck and an upper deck, the lower deck and the upper deck are arranged in parallel, a plurality of wave compensation branch chains are connected between the lower deck and the upper deck, and the wave compensation branch chains comprise redundant branch chains and non-redundant branch chains; the redundant branch chains and the non-redundant branch chains located in the same row or the same column are arranged in a crossed mode, the non-redundant branch chains comprise the first non-redundant branch chain and the second non-redundant branch chain, the non-redundant branch chains are arranged in an isosceles triangle mode with the second non-redundant branch chain as the vertex, and the rest of the non-redundant branch chains are the redundant branch chains. The position precision of the mechanism is guaranteed through the position control branch chains, time-varying nonlinear motion in the heaving, rolling and pitching directions is dynamically compensated in real time, meanwhile, the redundant structural force control branch chains balance driving force of all the branch chains by adjusting the driving force, the bearing capacity of the mechanism can be improved, and good overall rigidity is achieved.

The invention discloses a steel structure modular assembly type building connection node and an assembly method.The connection node comprises an upper-layer basic module and a lower-layer basic module, the upper-layer basic module and the lower-layer basic module are connected through a middle connection module, and the middle connection module comprises a connecting piece; the connecting piece comprises a transverse steel plate and a longitudinal steel plate which are vertically crossed and fixed; the corner fittings are hollow box bodies, clamping and locking devices matched with the connecting pieces to achieve locking and unlocking of the corner fittings and the middle connecting module are installed in the corner fittings, each clamping and locking device comprises a spring bolt which is horizontally arranged, the two ends of each spring bolt penetrate through and extend to the outer sides of the corner fittings, and the spring bolts can stretch out of or retract into the corner fittings. According to the connecting joint, rapid locking and unlocking of the corner piece and the connecting piece can be achieved, accurate alignment is not needed during installation, the module assembling efficiency can be greatly improved, and cyclic utilization of module components is achieved.

The invention relates to the technical field of filters, and discloses a resonator and a surface acoustic wave filter, and the resonator comprises an interdigital transducer and a transverse strip structure. The interdigital transducer comprises a first bus bar, a second bus bar, a plurality of first finger bars and a plurality of second finger bars; the first bus bar and the second bus bar are oppositely arranged, the same ends of the plurality of first finger bars are connected with one side, close to the second bus bar, of the first bus bar, and the same ends of the plurality of second finger bars are connected with one side, close to the first bus bar, of the second bus bar; the transverse strip structure is arranged in a target area of the interdigital transducer; the transverse strip structure comprises a plurality of first transverse strips and a plurality of second transverse strips, the first transverse strips and the second transverse strips are arranged in a crossed mode, the adjacent first transverse strips and second transverse strips are distributed in a staggered mode, and the first ends, in the first direction, of the first transverse strips are connected with the third ends, in the first direction, of the second transverse strips. According to the resonator provided by the invention, the Q value of the resonator can be improved while a transverse mode is effectively suppressed.

The present invention provides a modular “fabric-unit” with preferred embodiments for the construction of a multitude of different self-supporting game boards of different types, sizes and shapes, wherein the fabric-unit comprises an array of 3-dimensional square “fabric-cells” for game tiles or 3D game pieces and game board accessories, mounting slots in the form of cross-connectors for attaching game board accessories and a background graphic layer, a plurality of hermaphroditic edge connectors on all sides of the fabric-unit, whereby the hermaphroditic edge connectors make a strong connection with hermaphroditic edge connectors of an adjacent inverted fabric-unit of the same construction, and the fabric-unit comprising small profile crossbars and walls and preferably high optical transparency material to increase visibility of a background graphic layer, and matching edge-panels for providing a cosmetic perimeter to the game board and for attaching a background graphic layer.

The thin-wall rotary component correcting device comprises a rotary seat wing, the rotary seat wing comprises a flat plate and a hollow threaded sleeve, the flat plate and the hollow threaded sleeve are installed on a rotary component in a crossed mode, and the two ends of the hollow threaded sleeve are connected with adjusting supporting rods respectively. The adjusting supporting rods are installed on the inner side of the rotary component through supporting blocks respectively, and the supporting blocks are hung on the hole opening of the rotary component in an abutting mode and tightly attached to the inner wall of the rotary component. Through the arrangement of the supporting blocks, the supporting seats are not prone to shifting, rotating, loosening and falling to damage products in the operation process, the structure is simple, disassembly and assembly are convenient, and the reliability and the correction effect of the correction device are improved.

According to some illustrative embodiments, a modular mounting system for mounting accessories on vehicles includes: a) a plurality of support members, each of said plurality of support members having i) a lower upright planar member configured to extend downward along a peripheral wall around a vehicle bed, ii) a cross planar member extending laterally from the lower upright planar member and configured to extend across the peripheral wall around the vehicle bed, and iii) an upper upright planar member extending upwardly from the cross planar member and configured to extend upwardly above a height of the peripheral wall around the vehicle bed; and b) at least one of: i) a removable cross-bar removably supported by a plurality of said upper upright planar members; and ii) a removable side panel removably supported by a plurality of said upright planar members.

The invention provides an electric arc additive and subtractive composite manufacturing method and device for a cross structure based on low surface roughness. The device comprises an electric arc additive manufacturing forming system, a milling and subtractive system and a three-dimensional scanning detection system. Firstly, cross structure characteristics are analyzed, an additive manufacturing program is generated through an electric arc additive manufacturing forming system, and a layer is added; secondly, the flatness S, the average height # imgabs0 #, the weld reinforcement h and the height D of each position of the formed surface are analyzed through a three-dimensional scanning detection system, and whether the flatness S exceeds a specified value or not is judged; and finally, material increasing and decreasing judgment is conducted, and if # imgabs1 # imgabs2 #, material decreasing is conducted through a milling and cutting material decreasing system. And if # imgabs3 #, additive repair welding is conducted through an electric arc additive manufacturing forming system. In combination with a three-dimensional scanning detection system, flatness feedback of the formed surface can be obtained in real time, material increasing and decreasing are conducted in time in the cross structure forming process, the roughness of the formed surface of the cross structure is effectively reduced, and the forming precision is improved.

The invention discloses a 3D printer visual leveling method and system.The method comprises the steps that a hot bed platform of a 3D printer is shot through a camera, image data of the surface of the hot bed platform are obtained, and the image data comprise a plurality of visual leveling strips printed on the hot bed platform as reference standards; the visual leveling strip is arranged on the hot bed platform to form a group of orthogonally crossed line grids, and the visual leveling strip comprises a series of position reference lines and corresponds to a preset coordinate system on the hot bed platform; processing the image data, and extracting a reference line feature point set in the image; the deviation amount of each feature point in the reference line feature point set relative to a preset reference line is calculated, and a hot bed deformation model used for describing the deviation of a hot bed platform at the vertical height is generated through fitting; determining an adjustment amount for leveling according to the deviation amount and the hot bed deformation model; and transmitting the adjustment amount to a leveling execution mechanism through a communication interface so as to drive a corresponding mechanical structure to realize automatic leveling of the hot bed platform. By utilizing the embodiment of the invention, the state of the hot bed platform can be comprehensively monitored and automatically leveled, and the reliability and the printing quality of 3D printing are remarkably improved.

The utility model belongs to the technical field of building space structures and cable truss structures, and particularly relates to an inhaul cable space crossing device which comprises a cable penetrating connector, the two ends of the cable penetrating connector are detachably connected with connecting parts used for being fixedly connected with a steel cable respectively, and a hollow round long hole used for allowing another steel cable to penetrate through is formed in the middle of the cable penetrating connector. And an anti-friction part is wrapped outside the hollow round long hole. By means of the device, the steel cables can be crossed on the same plane, friction loss between the steel cables is avoided, radial component force cannot be generated, and the device is simple in structure and has the advantages of being convenient to install and low in cost compared with connection through a connecting plate.

The invention discloses a three-axis differential implementation method based on cross symmetry of double inertial sensors, and the method comprises the following steps: S1, a sensor is an MEMS inertial measurement unit, i.e., an IMU, the IMU uses a right-hand Cartesian coordinate system to define the directions of three sensitive axes of the IMU, and the IMU is used for defining the positive direction of an angular velocity and also used for defining the positive direction of a linear acceleration; s2, in order to realize three-axis difference, rotating the sensor around the y axis by 180 degrees; s3, a result obtained in the step S2 is rotated by 90 degrees around the z axis; and S4, after the step S3, realizing symmetry of the x axis and the y axis through crossing, and realizing three-axis difference through double IMUs by applying a three-axis symmetry principle of an inertial sensor.

Method for determining a grasping hand model suitable for grasping an object by receiving an image including at least one object; obtaining an object model estimating a pose and shape of the object from the image of the object; selecting a grasp class from a set of grasp classes by means of a neural network, with a cross entropy loss, thus, obtaining a set of parameters defining a coarse grasping hand model; refining the coarse grasping hand model, by minimizing loss functions referring to the parameters of the hand model for obtaining an operable grasping hand model while minimizing the distance between the finger of the hand model and the surface of the object and preventing interpenetration; and obtaining a mesh of the hand represented by the enhanced set of parameters.

The invention discloses a natural ventilation cooling tower and a dumbbell-shaped concrete filled steel tube cross strut thereof, the dumbbell-shaped concrete filled steel tube cross strut comprises four dumbbell-shaped steel tube limb columns and cross nodes, and the end parts of the dumbbell-shaped steel tube limb columns are connected with the cross nodes to form a cross structure; the cross joint comprises a vertical stiffening plate, an upper reinforcing ring, a lower reinforcing ring, a plurality of joint sleeves and a plurality of joint webs, the upper reinforcing ring and the lower reinforcing ring are perpendicularly crossed with the vertical stiffening plate, the joint webs are connected with the joint sleeves, and the joint sleeves, the joint webs, the upper reinforcing ring and the lower reinforcing ring form a dumbbell-shaped structure with the vertical stiffening plate as the central axis. Open holes are formed in the reinforcing rings and used for pouring and circulation of concrete, the four dumbbell-shaped steel pipe limb columns are arranged at the open holes of the upper reinforcing ring and the lower reinforcing ring, and a closed space is formed by the joint sleeve, the joint web, the upper reinforcing ring, the lower reinforcing ring and the four dumbbell-shaped steel pipe limb columns. The problem of material waste caused by rich in-plane directional bearing capacity of a circular section can be solved.

The invention relates to a building space truss construction method and system, a storage medium and electronic equipment, and the building space truss construction method belongs to the technical field of building manufacturing, and comprises the steps: obtaining an upper chord curved surface and a lower chord curved surface, determined by taking a roof curved surface as a reference surface, of a target building; taking the column grid size, the upper chord grid size and the lower chord grid size as input data of a parameterized model, and performing grid structure division on the upper chord curved surface and the lower chord curved surface in the parameterized model to obtain an upper chord, a lower chord and column node group vectors corresponding to the upper chord and the lower chord; performing crossover operation on the column node group vectors corresponding to the upper chord member and the lower chord member to obtain a net rack web member; the space truss of the target building is constructed on the basis of the upper chord member, the lower chord member and the truss web member, the whole process can be automatically carried out through a parameterized model and a corresponding software system, manual construction is not needed, and therefore material waste caused by manual construction is reduced, and the structural performance of the constructed truss is improved.

The invention discloses a steel structure truss steel plate laminated slab pouring platform and a construction method, and relates to the technical field of laminated slab pouring construction. The steel structure truss steel plate laminated slab pouring platform comprises a construction platform support which is formed by connecting support transverse rods, support longitudinal rods, support vertical rods and support inclined rods in an inserted mode; the two telescopic support transverse rods and the two support longitudinal rods are connected in an inserted mode to form a rectangular plane frame, and a stable structure which is 30 cm higher than a floor slab is formed. According to the construction platform support, a stable structure is formed through modular inserting connection, the stable structure is erected on a steel beam of the layer, a bent frame does not need to be erected from the bottom layer, and the problems that a traditional bent frame is small in supporting construction space, cross construction is affected, and an overhanging part cannot be erected are solved; the bolts are adjusted to tension the tie bars to enable the truss steel plates to generate preset inverted arches, load deformation during pouring is counteracted, collapse risks caused by non-support pouring are avoided, the problems of steel bar deformation, node damage and the like caused by direct treading on the truss steel plates by constructors are avoided, and the quality and rigidity of floors are guaranteed.

The utility model relates to the technical field of flexible photovoltaic panel supports, and discloses an M-shaped double-row four-cable flexible photovoltaic support structure, which comprises two end part supporting mechanisms, and four inhaul cables are jointly and fixedly supported at the upper parts of first cross beams of the two end part supporting mechanisms. And two rows of photovoltaic panels can be mounted on one group of brackets, so that the cost of the bracket is further reduced on the premise of having the advantage of low cost of the flexible bracket. According to the utility model, a windproof mechanism which can be matched with a four-cable structure is designed, and the resistance strength of the inhaul cable to external force can be improved through a cross-type multi-triangle stable structure which is close to an M shape. According to the utility model, the middle support mechanisms with mutual relevance are designed, so that the adjacent support structures have a mutual traction relation, the resistance strength of the inhaul cable to external force is further improved, and the maintenance cost of the photovoltaic panel and the photovoltaic panel support is reduced.

The utility model discloses a circular working well main body structure which comprises a cylindrical hollow side wall, a top plate located at the top is arranged at the upper end of the side wall, a bottom plate located at the bottom is arranged at the lower end of the side wall, #-shaped crossed internal partition walls are arranged in the internal space of the side wall, and the internal partition walls divide the internal space. And four shield launching and receiving holes are reserved in the lining wall on the inner side of the side wall. According to the utility model, the inverted circular lining wall and the enclosure structure form a superposed side wall, the support rigidity of an internal #-shaped crossed longitudinal and transverse beam (wall) system is large, and structural members are permanently and temporarily combined, so that the stability of the multi-hole structure of the ultra-deep circular working well is enhanced, and the formation deformation is effectively controlled. The longitudinal and transverse beam (wall) system is reasonable in space layout, plate span is reduced, a self-balancing space stress system is formed, the thickness of the top plate and the thickness of the bottom plate are small under the condition of large burial depth, the plate face is flat, arching is not needed, construction is convenient, and space utilization is reasonable.

An adjustable roof support system is disclosed for supporting a roof or a floor in a building having at least one truss. The system includes a plurality of interlocking segments, each having at least one fastener slot and a cross-section comprising a main rail with a top extension and a bottom extension that define an interior channel and an external periphery. The interlocking segments include at least one female length and one male length, wherein the exterior periphery of the male length fits within the interior channel of the female length. The assembled length is slidably adjustable, and the system can be assembled on a structure having a first truss and a second truss. The system may also include a cross connector configured to secure one interlocking length to another at an angle.

The invention belongs to the field of constructional engineering, and particularly relates to a connecting piece for enhancing the bonding performance of a fabricated wall and a cast-in-place structure. Comprising a longitudinal steel plate suite, a double-end pull rod steel bar and a binding clamping piece. A first-stage cage type three-dimensional reinforcing body is formed through matrix arrangement of the longitudinal steel plate suites and crossed penetrating arrangement of the double-end pull rod steel bars, a three-dimensional net-shaped stress structure is formed between cast-in-place concrete and the prefabricated wall body, and threaded steel is arranged in a staggered layer mode at different horizontal heights, so that the space rigidity is further enhanced; and meanwhile, a secondary transverse tensile reinforcing body is formed through the synergistic effect of the lock hook piece and the double-end pull rod reinforcing steel bar, occlusion of the concrete pin key and the longitudinal sawtooth groove is formed in the horizontal direction, composite anchoring of the cast-in-place layer and the prefabricated wall is achieved, and the sliding problem of a traditional connecting piece is effectively solved.

The invention discloses a vertical shaft excavation construction method, a vertical shaft to be excavated is divided into a first vertical shaft to be excavated and a second vertical shaft to be excavated, and the construction method comprises the following construction steps that S1, an upper flat tunnel is excavated and constructed to the bottom of the first vertical shaft to be excavated to form a first cross section, the lower flat tunnel is excavated to the bottom of the second vertical shaft to be excavated to form a second cross section; s2, a section of the lower portion of the first shaft to be excavated serves as a protection section to be reserved, and construction is conducted on the top of the first shaft to be excavated to the top of the protection section through a normal well method; a slag sliding pilot shaft is constructed downwards along the axis of the second vertical shaft to be excavated through a raise-boring method; s3, after the slag sliding pilot shaft construction is completed, the protection section continues to be constructed to the first cross section through the normal well method; and S4, a second vertical shaft is planned to be excavated to a second cross section through inverse well construction by adopting construction equipment of a normal well method. According to the vertical shaft excavation construction method, the technical problem that the construction difficulty of the deep and large vertical shaft is high is solved.

A rear-entry ankle brace includes an elastomeric component defining an inside elbow channel configured to span an ankle joint. A channel opening extends the length of the elastomeric component for direct insertion on top of a leg. One or more leg straps are used to adjustably tension first and second rear edges of the channel opening toward one another and secure the brace to the lower leg. Two foot straps are used to adjustably tension first and second bottom edges of the channel opening toward one another and secure the brace to the mid-foot. The foot straps overlap on the bottom to define a plantar surface of the brace and cross over each other on the topside of the elastomeric component and are secured to a leg strap. A pair of stabilizing stirrups optionally are included on the inside surfaces of the elastomeric component and receive the malleoli.

The invention belongs to the technical field of fabricated buildings, and particularly relates to an energy consumption enhanced fabricated shear wall structure and a mounting method thereof. The shear wall structure comprises a plurality of shear wall units. In the vertical direction, each shear wall unit is provided with a plurality of opening units; the number of the shear wall units is odd, and X-shaped metal pieces are installed in the opening units of the even shear wall units. First friction strips are wound in the opening units on the shear wall units and at the same horizontal height; the X-shaped metal piece connects the two first friction strips to form a winding and binding crossed area; transverse stress plates are arranged on the upper portions and the lower portions of the two side faces in the thickness direction of the wall, and slidable stress plates are connected to the outer sides of the transverse stress plates in a sliding mode. A plurality of second friction strips are connected in the slidable stress plate; connecting short beams are connected between the two opposite side walls of every two adjacent shear wall units. The problem that the anti-seismic property of the fabricated concrete shear wall needs to be enhanced is solved.

The invention discloses a metasurface control architecture design method. According to the method, high and low voltages of each row unit and each column unit of the metasurface array are coded, phase codes of the metasurface array are obtained through a matrix multiplication method, and the control architecture method is called a basic cross control method or a one-area cross control method. Furthermore, according to the method, the metasurface array is divided into a plurality of areas of the basic cross control architecture, so that a multi-area cross control architecture is formed; according to the multi-zone cross control, the number and the zone positions of the zones can be flexibly changed according to the requirements of an actual application scene, so that the pointing precision of a wave beam is regulated and controlled, and meanwhile, the achievable complexity of metasurface control hardware is reduced. According to the invention, on the premise of keeping the specified beam regulation and control precision, the complexity of a metasurface control architecture and the memory occupied space of coding can be obviously reduced, and the application development of the low-cost and high-performance reconfigurable metasurface is promoted.

The invention discloses a quasi-zero stiffness vibration isolator, and relates to the technical field of vibration isolation, the quasi-zero stiffness vibration isolator comprises a vibration isolation unit cell, the vibration isolation unit cell comprises a first fixer, a second fixer and a vibration isolation unit with an elastic self-recovery function, the vibration isolation unit comprises an X-shaped cross beam, and two sides of the X-shaped cross beam are respectively connected with the first fixer and the second fixer; the X-shaped cross beam has high bearing capacity in the initial state, the rigidity of the X-shaped cross beam is linear positive rigidity in the stage, after the borne load reaches the buckling limit, the X-shaped cross beam can be buckled, the buckling mode is that all sections of the cross beam are bent in the same direction, and in the stage, a load-displacement curve enters a platform area, so that the X-shaped cross beam is bent in the same direction. At the moment, the equivalent stiffness approaches to zero, namely, the X-shaped cross beam is designed and matched with the fixers on the two sides to serve as a fixing face and an equipment mounting face, and the vibration isolation unit cell of the quasi-zero stiffness vibration isolator with the efficient low-frequency vibration isolation performance and capable of effectively reducing the system mass and complexity is formed.