223results about How to "Unfold stable" patented technology

The invention relates to a space foldable mechanism, in particular to a space foldable mechanism derived from five-revolute-pair units, aiming at solving the problem that a high-storage-ratio space foldable mechanism is not developed at present. The scheme one is that a first connecting rod is rotatably connected with a first revolute pair, the first connecting rod is connected with a second connecting rod, the second connecting rod is connected with a third connecting rod and the third connecting rod is connected with a fourth connecting rod. The scheme two is that three foldable units are arranged in the shape of a triangular closed loop. The scheme three is that six space modules are sequentially connected to form a closed loop structure. The scheme four is that a first five-revolute-pair unit is connected with a second five-revolute-pair unit, the second five-revolute-pair unit is connected with a third five-revolute-pair unit and the third five-revolute-pair unit is connected with the first five-revolute-pair unit. The scheme five is that a first umbrella-shaped module is connected with a second umbrella-shaped module, the second umbrella-shaped module is connected with a third umbrella-shaped module and the third umbrella-shaped module is connected with the first umbrella-shaped module. The space foldable mechanism derived from the five-revolute-pair units is used for spacecrafts.

A welding wire container for holding a coil of welding wire, comprising: an outer cylinder of paper; a base plate held by the interior of the outer cylinder at an indented portion of the lower portion of the outer cylinder, the base plate forming the bottom portion; A cage that moves downward as the filler wire decreases; and a ring member mounted on the cage whose outer diameter is smaller than the minimum inner diameter of the outer cylinder. The cage includes a diameter-adjustable tubular portion formed by rolling up a belt member, and a plurality of blade portions extending from an inner edge of a lower portion of the tubular portion toward the center of the tubular portion. The loop member acts as a plumb for the cage as the wire is pulled out of the container. With the above structure, the welding wire can be smoothly deployed to the bottom layer of the welding wire without being entangled with each other.

The invention relates to a longitudinal unfolding mechanism for a direct-connected folding wing. At present, folding wings of all missiles have functions of one time unfolding and locking, and the unfolding time of the folding wings of all the missiles is very short, the unfolding and locking impact is higher, and the interference on the posture of a flying missile is higher. By adoption of a direct-connected cam mechanism design idea, the reliable locking of folding wings of the missiles can be realized at a time. Power is supplied by a gas actuator cylinder and directly drives a cam to movealong a guide rail; and a driven sliding block on the missile wing is contacted with a chute of the cam and moves in the chute of the cam to realize unfolding of the folding wing. By the longitudinalunfolding mechanism, the minimization of a wrapping space of the folding wing is realized, the mechanism is compact, and high-precision and high-reliability folding, unfolding and locking can be realized easily.

The invention provides a spatially extendible annular tensioning integrated antenna mechanism, relates to antenna mechanisms, and solves the problems that a present extendible annular antenna needs lots of mechanical connection in the folding and unfolding process and further causes high total weight and low unfolding reliability. A main-end fixation member is fixedly connected with one end of a main-end connecting tube via a pin, the other end of the main-end connecting tube is fixedly connected with one end of a carbon fiber tube, two bar-shaped openings are formed in the sidewall of the main-end connecting tube along the length direction, two locking flat springs are arranged correspondingly at the positions of the bar-shaped openings, a drive spring is placed in the carbon fiber tube, an annular groove is formed in the middle portion of a guiding slide block circumferentially, when the antenna mechanism is unfolded, the lower portion of the locking flat springs are clamped in the annular groove of the guiding slide block, the lower end of the guiding slide block is connected with a slide block screw, the guiding slide block is placed at the upper end of the driving spring, an auxiliary-end fixation piece is fixedly connected with the other end of the carbon fiber tube via an auxiliary-end connecting piece, and the amount of tensioning integrated rods is an even number. The antenna mechanism is used in the field of wireless communication.

The invention discloses a medical stretcher suitable for outdoor medical rescue. The medical stretcher comprises two folding round rods arranged in parallel. Each folding round rod is formed by connecting two unit rods. Stretcher cloth and a folding circular transverse rod used for transversely connecting the two folding round rods are arranged between the two folding round rods. The medical stretcher further comprises a locking mechanism used for locking the unfolding state of the folding round rods and at least four support legs used for supporting the stretcher and capable of adjusting self height in telescopic mode. The locking mechanism is hinged between two unit rods of each folding round rod. The support legs are symmetrically hinged on the two folding round rods and are used for supporting under the unfolding state of the folding round rods and adjusting height of the stretcher. The medical stretcher is capable of being folded into smaller size, convenient to carry, capable of maintaining placement stability on uneven outdoor ground, thereby avoiding secondary damage of patients.

The invention relates to a redundant locking type longitudinal expansion mechanism of a folding wing. The existing missile folding wing has the once expansion locking function and has the defects of extremely short expansion time, great expansion locking impact and great posture interference on a missile in flight. The longitudinal expansion mechanism provided by the invention adopts the design idea that a worm mechanism and a ball nut are combined, wherein the mechanism can realize the once reliable locking of the folding wing; the power of a gas actuator cylinder drives the nut to move; a screw shaft is linked with a worm, thereby driving a worm gear to rotate around a wing shaft; and the locking of the folding wing is realized by utilizing the self-locking action of the worm. The longitudinal expansion mechanism provided by the invention realizes the minimization of the enveloping space of the folding wing, has the advantage of compact structure and is easy to realize the folding, the expansion and the locking with high accuracy and high reliability.

The invention discloses a cubesat brake sail de-orbit device. The cubesat brake sail de-orbit device is composed of two completely identical cubesat brake sail de-orbit sub-devices. Each cubesat brake sail de-orbit sub-device comprises a de-orbit device body and a partition board arranged on the top of the de-orbit device body, wherein the de-orbit device body is of a central symmetry structure and comprises a main frame, an upper end cover, a sail storage chamber guide rail, a Hall sensor, a base plate and two expanding mechanisms, the main frame is Z-shaped, the main frame is divided into two identical chambers with the center of the main frame as the symmetry center, and the two expanding mechanisms are arranged in the two chambers respectively. Four film sails are expanded in four directions by means of tape spring masts to increase the normal sectional area of satellite movement, so as to successfully solve the problem that a cubesat stays on the original track for a long time after fulfilling a task and becomes space debris.

The invention discloses a reticulated annular deployable antenna and an antenna truss. The antenna truss comprises an annular structure formed by connecting a plurality of structural units end to end,and the structural units constitute a closed annular structure through sharing cross bars; and one of the structural unit includes four cross bars, two sliding vertical bars, two main vertical bars,two extended vertical bars, four connecting bars, a lower cross bar fixed joint, an upper connecting rod sliding joint, an upper cross bar sliding joint, an upper cross bar fixed joint, a lower connecting bar sliding joint, a lower cross bar sliding joint and four articulation joints. The bars of the structure are distributed on three plane layers along the radial direction, thereby effectively reducing the folding diameter, making full use of the folding space, and greatly reducing the folding height. Compared with similar reticulated deployable antennas, the antenna provided with the invention is significantly improved in height and diameter storage ratio, and thus increases the deployable aperture of the antenna under the condition of realizing the same folding requirements.

The invention relates to a rope-driven umbrella-shaped Cassegrain antenna main and auxiliary surface stable unfolding mechanism. The mechanism comprises a central hub, radiation ribs, a feed source horn, an auxiliary surface, a spring, a main surface rope, an auxiliary surface rope and a winding mechanism, and the central hub is a fixed component; one end of each radiation rib is hinged with the central hub; the feed source horn and the center hub are coaxially and fixedly connected to the upper surface of the interior of the center hub; the secondary surface is coaxially connected with the feed source horn; the spring sleeves the feed source horn, is in contact with the bottom of the auxiliary surface and pops up the auxiliary surface when the antenna is unfolded; the main surface rope penetrates through the slots of the radiation ribs and the holes in the side surface of the central hub, and two ends of the main surface rope are fixedly connected with the radiation ribs and the auxiliary surface respectively; the auxiliary face rope penetrates through the hole in the bottom face of the center hub, and the two ends of the auxiliary face rope are fixedly connected with the auxiliary face and the winding mechanism. According to the invention, the unfolding process is stable, the impact on the antenna is small, the radiation ribs are unfolded while the auxiliary surface is unfolded, the unfolding synchronism of the antenna is good, and the antenna can be folded automatically for multiple times.

The invention relates to an adsorption type fast film sticking device, which comprises a film unwinding part for conveying the film backward; a film pulling part for driving one end of the film to move backward to make the film unroll in a horizontal direction; a feeding part, the The feeding part is used to intermittently supply the sheet material to the film pulling part to make the sheet fit with the unfolded film; the film pulling part includes a rotating mechanism and several groups of supporting cutters which are arranged on the rotating mechanism and perform rotating motion under the driving of the rotating mechanism. A cutting mechanism and a negative pressure supply mechanism arranged on one side of the rotary mechanism; the feeding part includes a clamping mechanism for supporting the sheet material and a blanking material for controlling the sheet material in the clamping mechanism to fall intermittently with the rotation of the rotary mechanism Mechanism; the invention overcomes the problems of unstable film unfolding during the film sticking process, easy occurrence of wrinkles and inability to achieve continuous and efficient film sticking and complete film cutting while sticking the film.

The invention discloses a self-adaptive glass gripping sucker and belongs to the field of glass gripping devices. The self-adaptive glass gripping sucker comprises a mounting frame, the lower side ofthe mounting frame is provided with a plurality of swing arms, all swing arms are distributed along the periphery of the mounting frame at intervals in a surrounding mode, the mounting frame is provided with a plurality of rotating driving mechanisms corresponding to the swing arms, one ends of the swing arms are connected with the corresponding rotating driving mechanisms in a transmission mode,and the other ends of the swing arms are provided with sucker bodies. The mounting frame is in a rectangular shape, the swing ends of the four swing arms are separately arranged under four corners ofthe mounting frame, and two adjacent swing arms are perpendicular to each other. According to the self-adaptive glass gripping sucker, an original sucker fixed distribution is changed into a flexiblecontrol distribution, the self-adaptive glass gripping sucker is retractable and expandable and is more stable and firm to grip glass with different shapes and sizes, so that the working time is saved, and the working efficiency is enhanced.

The invention discloses a simple parallel spreading and laminating device for a wide ultrathin membrane. The simple parallel spreading and laminating device comprises a membrane unreeling roller, a magnetic powder damper, a bent roller, a gluing roller, a flat roller and a rack. A technology comprises the steps that the wrapping angle of the bent roller and the wrapping angle of the flat roller are adjusted by setting proper unreeling tension; the relative position relation of the unreeling roller, the bent roller and the flat roller is adjusted; the protruding direction of the bent roller is adjusted; and the membrane passes through the unreeling roller, the bent roller and the flat roller and then is combined with pre-soaked cloth to complete the laminating procedure. According to the simple parallel spreading and laminating device and technology for the wide ultrathin membrane, non-uniform elastic deformation is generated in the middle area and the edge areas of the membrane through the axial stroke linear change of the bent roller and the elasticity of the membrane, the spread membrane is fixed in the weft direction through the flat roller so that the ultrathin membrane can be spread, and the problems that the ultrathin membrane has wrinkles and is unevenly spread in the unreeling process can be effectively solved; unreeling is stable, the spreading parallelism of the ultrathin membrane is good, the breadth is stable, bonding to glued fibers is good, the phenomenon that bubbles are brought due to wrinkles of the membrane is thoroughly eliminated, and the finished product rate of the pre-soaked cloth is increased.

The invention discloses a curled and folded gas filled tube clamping and unfolding control device and a method thereof, aiming at realizing curled clamping fixation and unfolding control of the curled and folded gas filled tube. The curled and folded gas filled tube clamping and unfolding control device comprises a plug device, a rigid baffle plate and a flexible baffle plate. According to the curled and folded gas filled tube clamping and unfolding control device and method disclosed by the invention, the frictional resistance between the flexible baffle plate and the curled and folded gas filled tube is used for constraining the unfolding process of the curled and folded gas filled tube, and thus violent vibration and sway caused by non-constrained unfolding are avoided. Gas is filled to the free end of the curled and folded gas filled tube, and the gas filled tube which expanded under pressure can be gradually enfolded along the edge of the flexible baffle against the constraint of the frictional resistance after the pressure reaches a certain level. The curled and folded gas filled tube clamping and unfolding control device is simple in structure, little in occupied space, low in requirements on gas filling pressure, adjustable in frictional resistance and especially applicable to unfolding control of the thin-wall curled and folded gas filled tube; no Velcro fastener is needed to be additionally arranged on the outer wall of the tube.

The invention provides a manufacturing method of a solar sail capable of being unfolded controllably and orderly based on shape memory polymers, and relates to the manufacturing method of the solar sail, in particular to the manufacturing method of the solar sail for a spacecraft. The invention aims to solve the problems that a driving mechanism is complex, an unfolding process is instable, a structure is easy to damage and air leakage occurs existing in the conventional solar sail with an inflatable type structure, and solve the problems that the structure is complex, the unfolding reliability is poor, the total weight is large, the folding efficiency is low and the emitting volume is large existing in the solar sail with a mechanical unfolded and supported structure. The manufacturing method disclosed by the invention comprises the following steps of firstly synthesizing shape memory polymeric materials into shape memory thin polymer films, and covering electrothermal films on the shape memory thin polymer films; and fixing flexible material light reflecting films on the shape memory thin polymer films covered with the electrothermal films, then energizing for heating the electrothermal films until the shape memory thin polymer films are softened, orderly folding the sail surface of the solar sail, and after power cut, cooling the electrothermal films so as to obtain the solar sail which is folded. The manufacturing method disclosed by the invention is suitable for manufacturing the solar sail.

The invention discloses a space deployable mechanism designed on the basis of a posterior wing deployable mechanism of dermaptera insect earwigs. The space deployable mechanism is applied to a reflector of a satellite antenna and structurally comprises a first-grade rod set, a second-grade rod set, a third-grade rod set, a supporting rod set, a push-pull rod set, a combined hinge mechanism and a polyester film. End portions of rods in the first-grade rod set are sequentially connected through hinges. The second-grade rod set comprises rods and gears, and the gears are connected with the second-grade rods and then connected with the first-grade rods. Rods in the third-grade rod set are connected with the rods in the second-grade rod set through supporting rods. The rods in the first-grade rod set are driven so that the whole mechanism can be deployed. By the adoption of the space deployable mechanism, controllable folding and deployment of the satellite antenna of a spacecraft can be achieved, and the space deployable mechanism has the beneficial effects that the containing ratio is relatively large, and meanwhile a carbon fiber material is selected and used, so that the whole space deployable mechanism is small in weight, high in strength, good in stability and the like.

Building sun shading products are indispensable rigid demands of building energy saving. Outer sun shading facilities comprise outer shutter sun shading facilities, roller blind sun shading facilities, sailboard sun shading facilities, fixed sun shading facilities and the like. The outer sun shading facilities and equipment have more or less defects of sight shielding, small adjustable range, heaviness, large mounting difficulty, difficult later maintenance, limited heat insulation effect, poor wind pressure resistant capacity and the like. A supporting type retractable and foldable outer sun shading shutter system can be unfolded fully and folded up; a sun shading shutter base plate can be made into types of plane sun shading, plane punched sun shading, stereo grating type sun shading and honeycomb type sun shading; the outer sun shading shutter system is light in design, and different mounting positions also can be selected according to the sun shading requirement of different orientation; a certain ventilation gap exists between the sun shading shutter base plate and the sun shading face, so that the heat dissipation effect is good; and the unicity and defect that an existing sun shading product shades sun but not insulates heat are overcome completely, the overall appearance of a building is made to be attractive through the outer sun shading shutter system, and the external facade of the building is attractive while sun shading is achieved.