1234 results about "Parallelogram" patented technology

The invention belongs to the technical field of parallel robots, and particularly relates to a four-degree-of-freedom parallel mechanism with an offset angle, which comprises a fixed platform, transmission branch chains are respectively arranged on the left side and the right side of the fixed platform, and parallelogram structures with offset angles are fixedly arranged at the upper ends of the two transmission branch chains; and a movable platform is connected between the two parallelogram structures with the offset angles. According to the four-degree-of-freedom parallel mechanism, a unique 4-2-1 structure is adopted, two driving branch chains are driven to act through four driving moving joints composed of two first sliding blocks and two second sliding blocks, three-dimensional translational motion and one-dimensional rotating motion of one movable platform are achieved, the working space of the four-degree-of-freedom parallel mechanism can extend infinitely in the direction of a guide rail, and the working efficiency of the four-degree-of-freedom parallel mechanism is improved. The device is good in movement stability, compact in structure and high in rotation flexibility.

A seeding assembly for direct seeding comprising a support attached to the chassis of a seeding machine; load generating means supported on said support, and a seeding frame supporting a coulter blade and a double disc assembly comprising two furrow opening discs, the coulter blade and the double disc assembly being in a tandem arrangement, with minimum distance or spacing therebetween, and the coulter blade being partially located within the seeding frame, wherein the seeding frame is attached to the support through a parallelogram system, and the load generating means transmit load to the seeding frame through said parallelogram system, and wherein the coulter blade is partially located within the parallelogram system allowing the load applied to the seeding frame to concentrate more on the coulter blade so that said coulter blade penetrates the soil.

The invention discloses a clamping force global sensing device and a calibration method, and belongs to the technical field of clamping force sensing. Comprising a clamping force sensing module, a clamping force clamping jaw and a clamping device body, the clamping force sensing module is located between the clamping device body and the clamping device clamping jaw, and a parallelogram flexible hinge mechanism is arranged in the clamping force sensing module; a parallelogram flexible hinge moving end and a parallelogram flexible hinge fixed end are arranged in the parallelogram flexible hinge mechanism, and the parallelogram flexible hinge fixed end is fixed to the clamp holder body through the sensing module clamp holder adapter plate. And the moving end of the parallelogram flexible hinge is connected with the clamping jaw of the clamping device through the sensing module clamping jaw adapter plate. According to the clamping force global sensing device and the calibration method, the clamping force is converted into linear infinitesimal displacement in a single direction through the translation characteristic of the flexible hinge structure, and then the magnitude of the clamping force is detected through the piezoelectric / piezoresistive sensor.

The invention discloses a layered energy-saving driving speed optimization method, computer equipment and a storage medium, and relates to the technical field of data processing.The method comprises the steps that a longitudinal dynamic model is constructed according to the relation between the vehicle state and the driving mileage; constructing an energy consumption model according to the relationship among the vehicle speed, the driving torque and the instantaneous battery output power; constructing a green wave window according to the energy consumption model so as to generate the optimal passing time and the entrance and exit speed of each road section; constructing and optimizing a fillet parallelogram envelope line based on the green wave window according to the maximum speed, the maximum acceleration and the maximum deceleration of the vehicle so as to construct a space-time boundary of the green wave window; and generating an energy-saving speed curve according to the longitudinal dynamic model, the energy consumption model, the space-time boundary of the green wave window, the optimal passing time and the entrance and exit speed. By adopting the method, the speed track with an excellent energy-saving effect can be quickly calculated and obtained.

The invention belongs to the technical field of parallel robots, and particularly relates to a four-degree-of-freedom parallel mechanism based on wheel type driving, which comprises a movable platform, parallelogram structures with offset angles are symmetrically arranged on the left side and the right side of the upper surface of the movable platform, and the movable platform is connected with branch chain structures through the parallelogram structures with the offset angles. An output platform is connected below the movable platform; according to the four-degree-of-freedom parallel mechanism provided by the invention, wheel type driving is adopted, so that the four-degree-of-freedom parallel mechanism can realize three-degree-of-freedom movement on a plane, a positioning space is approximate to an environmental space, and the four-degree-of-freedom parallel mechanism has the capability of working in a complex environment through wheel type driving, so that the application range of the mechanism is greatly expanded.

The invention relates to a composite microprism reflective film with three triangular pyramid structures and a manufacturing method of a mold of the composite microprism reflective film, and is characterized in that the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies, and each parallelogram unit body is composed of two identical triangular pyramids A, four mixed triangular pyramids B and two mixed triangular pyramids C, the bottom surfaces of the triangular pyramids A, the mixed triangular pyramids B and the mixed triangular pyramids C are the same equilateral triangles, the inclination angles of the three pyramid surfaces of each triangular pyramid A are alpha / 2, the inclination angles of the pyramid surfaces of the mixed triangular pyramids B are alpha / 2, alpha / 2 and beta / 2, and the inclination angles of the three pyramid surfaces of the mixed triangular pyramids C are alpha / 2, beta / 2 and beta / 2 respectively; the area ratio of the triangular pyramid A to the triangular pyramid B to the triangular pyramid C is 1: 2: 1, and the performance under different application conditions can be reasonably optimized, so that the wide-angle performance can be improved, and the optimization and balance of the overall comprehensive performance can be realized.

The invention provides bottle inner wall spraying equipment and a spraying process thereof, and relates to the technical field of spraying process.The bottle inner wall spraying equipment comprises a sliding rail mechanism, two sliding seats are arranged at the bottom of the sliding rail mechanism, a clamping mechanism is fixedly connected between one sides of the two sliding seats, and a spraying mechanism is installed at the bottom of the sliding rail mechanism; a conveying mechanism is arranged at the bottom of the clamping mechanism, and a bottle liner is arranged at the top of the conveying mechanism. According to the device, the shaft moving plate and the rotating plate are parallel to each other and can be matched with the supporting plate and the connecting plate to form a parallelogram, so that when one side rotates, other sides can be driven to rotate in parallel, that is, the rotating plate rotates to drive the connecting plate to rotate in parallel, and then the clamping plate can be driven to rotate in a horizontal state all the time; the glass liners on the conveying mechanism can be clamped by the clamping mechanism and matched with the regulation and control mechanism, and the glass liners can be conveyed to the spraying mechanism through the sliding rail mechanism to be subjected to spraying treatment.

The invention discloses a lifting platform equipment stair special for transformer assembly, and relates to the technical field of stairs, the lifting platform equipment stair special for transformer assembly comprises a lifting platform and a base frame, and the bottom of the lifting platform is fixedly connected with a first fixing block and a second fixing block; one side face of the first fixing block is rotationally connected with a stair frame plate through a shaft rod, one side face of the second fixing block is rotationally connected with a supporting rod through a shaft rod, and one side face of the stair frame plate is rotationally connected with stair pedals through a shaft rod. The special lifting platform equipment staircase for transformer assembly has the effects that when the inclination angle of the staircase is adjusted, the staircase treads are kept in a horizontal state all the time, and a climber can conveniently use the staircase, a parallelogram structure is formed through cooperation of the staircase frame plates, the supporting rods and the staircase treads, and the inclination angle of the staircase clamping plates is changed; the stair treads are kept horizontal all the time, a climber can conveniently tread and climb, and the purpose of improving practicability is achieved.

The invention discloses a compliance regulation and control method for a combined six-bar multiple metamorphic mechanism. The combined six-bar multiple metamorphic mechanism is formed by combining two of the following three four-bar mechanisms: a Bennett mechanism, a parallelogram mechanism and a spherical four-bar mechanism. The compliance regulation and control method is realized by increasing the degree of freedom of the combined six-bar multi-metamorphic mechanism, and comprises the following steps: A, selecting two configurations needing to be switched; b, motion states of all joints of the mechanism under the two configurations in the step A are analyzed, and mutant joints and non-mutant joints are determined; c, part of non-mutant joints are selected to be fixed at non-bifurcation points, additional joints are added, and configuration switching is achieved; and D, each additional joint is coupled to the corresponding mutation joint adjacent to the additional joint, and a coupling joint is formed. The bifurcation points are converted into the continuous motion interval through bifurcation domain expansion, the mechanism achieves dynamic and flexible conversion in motion in combination with the coupling joint design, the shutdown requirement of traditional rigid switching is avoided, and motion impact is greatly reduced.

The invention relates to a microprism reflective film with three kinds of triangular pyramid combinations and a manufacturing method of a mold of the microprism reflective film, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies (1), each parallelogram unit body (1) is composed of four identical triangular pyramids A, one triangular pyramid B and three identical triangular pyramids C, the directions of the four triangular pyramids A and the directions of the three triangular pyramids C and the triangular pyramids B form 180 degrees, and the three triangular pyramids C and the triangular pyramids B are arranged among the four triangular pyramids A in a staggered manner; the bottom surfaces of the triangular pyramids A, B and C are the same equilateral triangles, the inclination angles of the three pyramids of each triangular pyramid A are alpha / 2, the inclination angles of the three pyramids of each triangular pyramid B are beta-alpha / 2, and the inclination angles of the three pyramids of each triangular pyramid C are alpha / 2, alpha / 2 and beta-alpha / 2 respectively. According to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.

The utility model discloses an A-surface-free photovoltaic module frame, which comprises a frame piece and a pressing block piece, the frame piece is fixedly arranged on a photovoltaic support through the pressing block piece, the frame piece comprises a side plate I, a side plate II, a lower supporting plate, an upper supporting plate and a corner connector connecting cavity, the middle part of the side plate I is provided with a clamping groove and an anti-seepage groove designed at the upper end of the clamping groove, and the middle part of the side plate II is provided with an anti-seepage groove designed at the upper end of the anti-seepage groove. The pressing block piece comprises a pressing block matched with the clamping groove and an anti-seepage boss matched with the anti-seepage groove, the clamping groove is designed to be of a parallelogram-like structure, a first gluing area and a pressure relief area are arranged on the first side plate, and a second gluing area is arranged on the upper supporting plate. The pressing block and the clamping groove are matched to provide downward pressure, the purpose of pressing the frame piece is achieved, it can be effectively guaranteed that the height of the frame and the photovoltaic panel are kept on the same face, and the photovoltaic panel is of a flat structure after being installed on the frame. And the pressure relief area absorbs redundant glue to achieve the purpose of preventing the glue from permeating to the surface of the photovoltaic panel.

The invention relates to the field of tractor hooking farm tools, in particular to a hooking device of a self-propelled potato planter, which comprises a transition frame, a hydraulic cylinder, a connecting rod and a transition rod, the transition frame is a vertically mounted rectangular frame formed by connecting an upper rod, a left rod, a lower rod and a right rod end to end; the seeding single machine frame comprises a cross rod and two right-angle supports which are located at the two ends of the cross rod and are perpendicularly connected with the cross rod, each right-angle support comprises a vertical rod and a horizontal rod perpendicular to the vertical rod, and the connecting rods are four rod pieces of the same structure; the two connecting points on the left rod and the two connecting points on the vertical rod of the left right-angle support are rotationally connected with the two ends of the two connecting rods respectively to form a parallelogram structure. The seeding unit can swing left and right on the horizontal plane and float up and down on the vertical plane in the seeding operation state, and the seeding unit is fixedly connected with the traction machine in the road transportation state, so that left-right swing and up-down floating on the vertical plane cannot occur.

The invention provides a solar wing device which is characterized in that one end of a flexible solar panel (6) is wound on a winding drum (3), the other end of the flexible solar panel (6) is connected with a uniform load rod (5), and the uniform load rod (5) is always parallel to a rotating shaft of the winding drum (3); the scissor mechanism (4) is formed by cascading four equal-length rods which form parallelograms when unfolded, the flexible solar panel is unfolded and folded in the bottom end-top end direction, elastic components are arranged at the bending positions of the left end and the right end, opposite to each other, of each parallelogram, and the scissor mechanism is driven by the elastic components to be unfolded. The elastic component enables the scissor mechanism (4) to always keep a force for pushing away the uniform load rod (5), and in the unfolding state or the folding state of the solar blanket, the torque generated by the motor adapts to the elastic force generated by the elastic component. The flexible solar wing can be repeatedly unfolded and folded in orbit for many times.

A collapsible space enclosure system is disclosed, designed for efficient transport and deployment in the field of mechanical engineering. The system described addresses the technical problem of cumbersome and inefficient collapsible structures by providing a system that integrates a telescopic lifting central section with an upper and lower portion for balanced vertical retraction and extension. The system includes folding panels connected to the central structure, configured to fold in two for compact shipment. Actuators enable continuous 360° rotation and balanced vertical movement. Parallelogram linkage assemblies facilitate simultaneous lateral retraction and vertical lifting. Retractable strut channel assemblies allow for the installation of add-on retractable spaces, increasing floor area. This system is particularly useful for military, commercial, and recreational applications, offering a streamlined and versatile solution for rapid deployment and compact storage.

The invention belongs to the technical field of coal mine heading machine onboard temporary supporting equipment, and particularly relates to a heading machine onboard temporary supporting device. The cutting part comprises a cutting part rack, a parallelogram turnover mechanism arranged in the middle of the cutting part rack, a turnover oil cylinder for driving the parallelogram turnover mechanism, a bearing platform, a telescopic mechanical arm assembly and a protective plate assembly, the bearing platform is connected to the cutting part rack through a parallelogram turnover mechanism and is driven by a turnover oil cylinder to horizontally lift and translate, one end of the mechanical arm assembly is connected to the bearing platform, and an angle adjusting mechanism is arranged between the mechanical arm assembly and the bearing platform; the guard plate assembly is installed at the other end of the mechanical arm assembly, and a leveling mechanism is arranged between the guard plate assembly and the mechanical arm assembly. According to the invention, the original onboard temporary support overturning structure of the heading machine is broken through, and the parallelogram four-connecting-rod translation mechanism is innovatively designed, so that the translation mechanism can be normally used in a low roadway, and the effect of increasing the practical performance is achieved.

A device for processing mesh data is configured to select one of multi-parallelogram prediction or cross product prediction as a selected prediction process for a mesh of the mesh data; in response to determining for a first vertex of the mesh that a first set of already decoded normal vectors are available, determine a predicted normal vector for the first vertex using the selected prediction process; normalize and scale the predicted normal vector for the first vertex to generate a normalized and scaled normal vector; and output a decoded version of the mesh based on the normalized and scaled normal vector.

The invention provides a single-degree-of-freedom bionic four-foot crawling robot based on a coupling plane connecting rod device, and relates to the technical field of robot mechanisms, the single-degree-of-freedom bionic four-foot crawling robot comprises a frame body and four mechanical legs connected to the frame body; a driving system is arranged on the frame body, the driving system is connected with a planar connecting rod mechanism, and the planar connecting rod mechanism is connected with the mechanical legs; the plane connecting rod mechanism comprises a crank rocker mechanism, a parallelogram mechanism and a driving component which are arranged in a coupled mode. The crank rocker mechanism comprises a crank, one end of the crank and one end of the driving component are connected with the driving system, the other end of the crank and the other end of the driving component are connected with the parallelogram mechanism, and the mechanical legs are connected to the parallelogram mechanism. The driving system operates to synchronously drive the crank and the driving component to rotate, so that the mechanical legs are driven to realize crawling movement. The robot has the beneficial effects that the complexity and the energy consumption of a control system are reduced by fusing a planar connecting rod mechanism, so that the movement of the robot is more coordinated and accurate, and the complex crawling action is conveniently realized.

The utility model relates to the technical field of passenger car steps, and discloses a manual four-step structure for a passenger car, which comprises a frame component, a framework component is movably sleeved in the frame component, and an upper connecting rod component and a pedal component are mounted at the front end of the framework component. And meanwhile, the lower connecting rod assembly sleeves the inner sides of the upper connecting rod assembly and the pedal assembly. According to the manual four-step structure for the passenger car, when the pedal stretches out, the positioning groove falls within the limit of the positioning block, the stretching-out angle of the pedal is fixed, the stretching-out position of the pedal is locked, the base anchor makes contact with the ground, the strength of the pedal is guaranteed, and the safety of people getting on and off the passenger car is guaranteed; the overall thickness is small, space is saved, the upper connecting rod and the lower connecting rod are locked through nylon blocks, and it is guaranteed that no abnormal sound is generated during recycling.

A paver system for paving a surface is provided. The paver system includes a plurality of cells interconnected to form a grid. The cells generally include six walls to form a hexagonal shape. The cells share at least two walls with adjacent cells, wherein the grid is arranged having parallel rows and columns of cells defining a parallelogram shaped grid. The grid defines four sides, wherein adjacent sides are not at a right angle, wherein select cells may have one or more walls which include a flexible expansion node, and wherein the cells are adapted to receive a filler.

The invention provides a manifold micro-channel heat sink device and a liquid cooling phase change heat dissipation system, relates to the technical field of heat sinks, and is used for solving the problems that in related technologies, a micro-channel heat sink is poor in gas-liquid separation effect and cannot effectively discharge bubbles during liquid cooling phase change heat dissipation, and the manifold micro-channel heat sink device comprises a micro-channel module and a manifold module, the micro-channel module comprises a plurality of rectangular micro-channel areas and parallelogram micro-channel areas which are communicated and alternately arranged at intervals; the manifold module is stacked on the micro-channel module, the manifold module comprises liquid inlet flow channels and liquid outlet flow channels which are alternately arranged at intervals, and a partition plate is arranged between the adjacent liquid inlet flow channel and liquid outlet flow channel; the partition plate is located over the parallelogram micro-channel area, and the liquid inlet flow channel and the liquid outlet flow channel are both located over the rectangular micro-channel area. One side wall face of the liquid outlet flow channel is provided with a step-shaped step, and the height of the step-shaped step is gradually reduced in the flowing direction of fluid so that the liquid outlet flow channel can be gradually expanded.

This disclosure relates generally to encoding and decoding of 3-dimensional (3D) mesh and is particularly directed to predicting a 3D mesh position using a predictor from a reference pool having angularly distributed candidate reference positions. For example, when encoding a current position, a set of prior encoded positions may be used to derive a set of reference positions that are distributed as angular and radial grid points in an angular and radial range determined relative to an initial reference position determined using a parallelogram prediction. The reference set may be derivable by both the encoder and the decoder, thereby requiring no signaling other than an index for an optimal predictor selected from the reference position set for encoding the current position.

The invention discloses a horizontal steering wheel with a walking mechanism and a steering mechanism, and belongs to the technical field of steering wheels. Comprising a support assembly, a spring shock absorber is rotationally installed on the support assembly, a fixing frame is rotationally installed at one end of the spring shock absorber, and a wheel assembly is installed on the fixing frame; an upper connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame, and a lower connecting rod frame is rotationally installed on the support assembly and rotationally connected with the fixing frame. The support assembly is provided with a driving assembly used for controlling the wheel assembly to steer. The upper connecting rod frame and the lower connecting rod frame form a parallelogram guide structure, and the upper connecting rod frame and the lower connecting rod frame swing synchronously in the damping process or under the heavy-load eccentric load working condition, so that tires are kept perpendicular to the ground all the time, the situation that the ground contact area is reduced due to inclination is avoided, it is guaranteed that contact pressure between the tires and the ground is evenly distributed, local abrasion is reduced, and the service life of the tires is prolonged. And meanwhile, the stability in the carrying process is improved.

A mesh coding method includes receiving a bitstream including coded information indicating that an attribute value of a current vertex in the mesh is predicted based on respective attribute values of a first vertex, a second vertex, and a third vertex in the mesh including a first face and a second face. The first face includes the first vertex, the second vertex, and the third vertex. The second face includes the first vertex, the second vertex, and the current vertex. A value is determined based on an angle between the first face and the second face. One of a plurality of prediction modes is determined based on the value. The plurality of the prediction modes includes a generalized parallelogram prediction mode and a linear parallelogram prediction mode. A predictor of the attribute value of the current vertex is determined based on the one of the plurality of prediction modes.

The invention discloses an unmanned aerial vehicle path planning method based on comprehensive risk cost, which can generate a low-risk unmanned aerial vehicle flight path. The method comprises the steps that firstly, an unmanned aerial vehicle path planning model containing comprehensive risks and operation cost is constructed, the model comprises a target function and constraint conditions, and the target function is composed of airspace risk cost and unmanned aerial vehicle transportation cost; then, setting three-dimensional constraint conditions including a voyage constraint, a turning angle constraint and a maximum takeoff weight constraint, and constructing a feasible solution space conforming to physical characteristics of the unmanned aerial vehicle; then, performing initial path planning based on a heuristic search weight-A * algorithm with weight, and generating an initial feasible path meeting a constraint condition by dynamically adjusting a heuristic function weight balance path length and risk cost; and finally, based on a parallelogram rule, optimizing the turning point optimization of the initial planning path. According to the invention, a path planning solution with safety and economical efficiency is provided for unmanned aerial vehicle transportation in a complex low-altitude environment.

The invention discloses a railway signal relay contact pressure sensor which comprises an elastic body, a probe fixed at one end of the elastic body and at least one sensitive element attached to the surface of the elastic body. Wherein the elastic body comprises an elastic detection structure, the elastic detection structure is a structure based on double-hole parallel beams, the elastic detection structure is composed of two parallel beams and two vertical beams, and the elastic detection structure can generate parallelogram deformation. The contact pressure sensor meets the use requirements of railway signal relay contact pressure measurement.

The invention discloses a micro-channel heat sink, which comprises a substrate and a packaging sheet which are stacked up and down, the packaging sheet is respectively provided with a fluid inlet and a fluid outlet, the substrate is provided with a groove, the middle of the substrate is provided with a micro-channel with a sectional parallelogram rib wall, and groove areas at two sides of the micro-channel are an inlet liquid storage groove and an outlet liquid storage groove. The front half part of the sectional type parallelogram rib wall micro-channel heat sink is a parallelogram micro pin fin cluster with a small size, and the rear half part of the sectional type parallelogram rib wall micro-channel heat sink is a parallelogram rib wall with a large size. A multi-stage channel is formed in the heat sink, a first-stage channel is formed in the flowing direction, a second-stage channel is formed between the large-size rib walls, and a third-stage channel is formed between the micro pin-fin clusters. According to the invention, the heat dissipation efficiency and the temperature uniformity of the heat sink can be effectively improved, and the voltage drop is effectively controlled. Compared with a traditional parallelogram pin-fin heat sink with a uniform size, the pressure drop is obviously reduced, and the comprehensive performance is improved by 24.9%.

The present application provides a robotic arm, a main operating table, and a surgical robot. The robotic arm includes a base connecting rod; a parallelogram mechanism rotatably connected to the base connecting rod, wherein the axis of rotation of the parallelogram mechanism around the base connecting rod coincides with the first rotation axis between the first connecting rod and the second connecting rod in the parallelogram mechanism; and a gravity compensation mechanism, including a rotation mechanism and an elastic mechanism, wherein the rotation mechanism is coupled to at least one of the first connecting rod and the second connecting rod, and the base connecting rod, and the elastic mechanism couples the base connecting rod and the rotation mechanism to generate a compensation torque that balances the gravity torque of the parallelogram mechanism in at least one degree of freedom corresponding to the parallelogram mechanism. Through this embodiment, it is possible to achieve better gravity balance on the degree of freedom compensated by gravity without increasing the inertia of the robotic arm, thereby providing an excellent operating experience.