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37results about How to "Small envelope" patented technology

Load platform separated type remote sensing microsatellite configuration and assembly method thereof

ActiveCN109484673ALarge stiffness marginLoad unit interface is simpleArtificial satellitesSatelliteThin metal
The invention provides a low-orbit load platform separated remote sensing microsatellite configuration including a platform metal frame plate structure, a load bracket integrated structure, a frame separation mechanism, a plate type solar wing deployment mechanism and various devices. In a frame plate type structure, similar to a conventional base plate, side plate and top plate type structure, all structural plates adopt a thin metal plate + rib + lightening design; the whole structure adopts the base plate as the design and assembly standard, and a main force transferring route is from the base plate, to the side plate, to the top plate and then to the load. The load bracket integrated structure is mounted on a satellite top plate. A bracket can be connected to the top plate, the bracketcan be provided with a partial air-oriented device and can also be connected to a solar wing, the solar wing includes a one-fold fixing and two-folding unfolding type solar wing, and the solar wing is connected to the satellite side plate and the top plate bracket mainly through a fixing type solar wing. The microsatellite configuration has high space utilization, compact structure and small size, the final assembly process is good in openness, the test is convenient, and the configuration is not adjusted under the conditions of replacing the load of the same magnitude.
Owner:AEROSPACE DONGFANGHONG DEV LTD

Chitosan-modified methazolamide solid lipid nanoparticles and preparation method thereof

The invention provides chitosan-modified methazolamide solid lipid nanoparticles and a preparation method thereof. The chitosan-modified methazolamide solid lipid nanoparticles can be used as eye drops. The preparation method is suitable for industrial production. The chitosan-modified methazolamide solid lipid nanoparticles are characterized in that based on 30ml of a nanoparticle-containing solution, the chitosan-modified methazolamide solid lipid nanoparticles comprise 5mg of methazolamide, 25 to 150mg of at least one lipid material, 25 to 150mg of phospholipid, 5 to 100mg of chitosan, 50 to 250mg of at least one non-phospholipid surfactant and 50 to 250mg of at least one assistant surfactant. The chitosan-modified methazolamide solid lipid nanoparticles have small particle sizes and high drug entrapment efficiency. Compared with solid lipid nanoparticles which are not modified by chitosan, the chitosan-modified methazolamide solid lipid nanoparticles have higher stability and better corneal permeability because of positive charges on the surfaces of the chitosan-modified methazolamide solid lipid nanoparticles so that drug bioavailability is improved. Therefore, the chitosan-modified methazolamide solid lipid nanoparticles have a large clinical application potential in glaucoma treatment.
Owner:NANJING MEDICAL UNIV

Wheel-leg composite type robot moving device and wheel-leg composite type robot

ActiveCN111391934ASolve the problem of many jointsReduce the number of jointsVehiclesLeg typeDrive wheel
The invention discloses a wheel-leg composite type robot moving device and a wheel-leg composite type robot. The wheel-leg composite type robot moving device comprises an installation part used for being connected with a robot body, a crotch joint driving part, a hip joint driving part, a first rod, a second rod, an ankle joint driving part, a wheel driving part and wheels, wherein the crotch joint driving part, the hip joint driving part, the first rod, the second rod, the ankle joint driving part, the wheel driving part and the wheels are connected successively in series. The second rod andthe ankle joint driving part are in fixed connection and other parts are in rotating connection. The installation part is connected with the crotch joint driving part. The crotch joint driving part isused for driving the hip joint driving part to rotate around the axis of the output end of the crotch joint driving part. The hip joint driving piece is used for driving the first rod to rotate around the axis of the output end of the hip joint driving piece. The ankle joint driving piece is used for driving the ankle joint driving piece to rotate around the axis of the output end of the ankle joint driving piece. The wheel driving piece is used for driving the wheel to rotate around a rotating shaft of the wheel. Compared with a traditional wheel leg type moving device, the wheel-leg composite type robot moving device has advantages that the number of joints is smaller, and control is simpler.
Owner:SHANGHAI AEROSPACE SYST ENG INST

Carbon fiber thin-wall cylinder type main supporting structure of large-aperture space camera

ActiveCN112485955AReduce self-weight deformationSmall envelopeCamera body detailsFiberCarbon fibers
The invention provides a carbon fiber thin-wall cylinder type main supporting structure of a large-aperture space camera, which comprises a secondary mirror truss assembly and a front cylinder assembly, wherein the secondary mirror truss assembly comprises a secondary mirror connector, three secondary mirror truss rods, a plurality of truss rod left clamping blocks and a plurality of truss rod right clamping blocks, the lower surface of the secondary mirror connector is provided with a secondary mirror assembly interface, the front cylinder assembly comprises a cylinder body, longitudinal bars, a longitudinal bar upper connector and a longitudinal bar lower connector, an upper flange is arranged at the upper end of the cylinder body, and a lower flange is arranged at the lower end of the cylinder body; the three longitudinal bars are evenly arranged on the outer wall of the cylinder body, the side wall of one end of each secondary mirror truss rod is bonded with the corresponding bonding installation face of the side wall of the secondary mirror connector, the other end of each secondary mirror truss rod is connected with the top surface of the upper flange through the truss rod left clamping block and the truss rod right clamping block, and the connecting positions of the three longitudinal bars and the upper flange and the connecting positions of the three secondary mirror truss rods and the upper flange are arranged in an up-down one-to-one correspondence mode. The invention provides a main supporting structure considering shading and force transmission paths. The structure is small in outer envelope, high in specific stiffness and light in weight.
Owner:CHANGGUANG SATELLITE TECH CO LTD

2SPS+RRPRR robot grabbing mechanism used for plate splicing

The invention provides a 2SPS+RRPRR robot grabbing mechanism used for plate splicing. The 2SPS+RRPRR robot grabbing mechanism comprises an upper platform, a lower platform and three branched chains, wherein a first branched chain and a second branched chain of the three branched chains are of 2SPS forms; the third branched chain is of a RRPRR form, and namely consists of a first rotary pair, a second rotary pair, a second translation pair, a fourth translation pair and a fifth rotary pair which are sequentially connected; the upper platform and the lower platform are separately positioned at the two ends of the first branched chain and the second branched chain; series-connection mechanical arms which are rotatably connected are separately arranged on the upper platform and the lower platform; and tail end tools for picking plates are separately arranged on the upper rotary pair, the lower rotary pair as well as the tail ends of the series-connection mechanical arms. The RRPRR branched chains are arranged, so that envelope of the mechanism body is reduced, and implementation of space operation is facilitated better. The series-connection mechanical arms are additionally arranged, so that the working space of the mechanism is expanded, and operating and monitoring capability of the mechanism is strengthened.
Owner:SHANGHAI AEROSPACE SYST ENG INST

Sliding unfolding method and system suitable for large space fixed-surface antenna

The invention discloses a sliding unfolding system suitable for a large space fixed-surface antenna. The sliding unfolding system comprises a fixed-surface antenna, a drive sliding system, unlocking devices and locking mechanisms, wherein the fixed-surface antenna is a plane or a cylindrical paraboloid after being unfolded and is formed by stacking a plurality of equant panels; the drive sliding system comprises a motor, a steel wire rope, a rope winding drum, fixed pulleys, idler wheels and transition blocks; the unlocking devices include interlayer unlocking devices, the transition blocks and interplate unlocking devices; the locking mechanisms are interplate locking mechanisms; various panels are unfolded and then connected through the interplate locking mechanisms; the rope winding drum is arranged at one end of the lowest panel; the motor drives the rope winding drum to rotate; and the rope winding drum, the steel wire rope and the fixed pulleys form a series drive system. The fixed-surface antenna is sequentially deployed by adopting a series order; a traditional hinged unfolding mode is broken; the closing space is reduced to adapt to carrying enveloping; and the sliding unfolding system has the characteristics of being small in overall envelope, few in drive sources, small in locking impact and high in locking rigidity.
Owner:SHANGHAI INST OF SATELLITE EQUIP

A carbon fiber thin-walled cylindrical main support structure for a large-caliber space camera

ActiveCN112485955BReduce self-weight deformationSmall envelopeCamera body detailsFiberCarbon fibers
The invention provides a carbon fiber thin-walled cylindrical main support structure for a large-caliber space camera, which includes a secondary mirror truss assembly and a front barrel assembly. The secondary mirror truss assembly includes a secondary mirror joint, three secondary mirror truss rods, and a plurality of truss rod left clamping blocks and a number of truss rod right clamps, a secondary mirror assembly interface is arranged on the lower surface of the secondary mirror joint, the front barrel assembly includes a barrel body, a longitudinal rib, a longitudinal rib upper joint and a longitudinal rib lower joint, and the upper end of the barrel body is arranged with upper flanges , the lower end of the barrel body is arranged with a lower flange; three longitudinal ribs are arranged, which are evenly arranged on the outer wall of the barrel body, and the side wall of one end of each secondary mirror truss rod is bonded to the corresponding bonding mounting surface of the side wall of the secondary mirror joint, and the other One end is connected to the top surface of the upper flanging through the left clamping block of the truss rod and the right clamping block of the truss rod. The present invention is a main support structure that takes into account both light shading and force transmission paths. The structure has a small outer envelope, high specific stiffness and light weight.
Owner:CHANGGUANG SATELLITE TECH CO LTD

Crystal growth method for reducing absorption of LBO crystal body and crystal prepared by crystal growth method

The invention relates to a crystal growth method for reducing absorption of an LBO crystal body and a crystal prepared by the crystal growth method. According to the method, boric acid and lithium carbonate are used as raw materials, a kidney-shaped platinum crucible and a platinum seed crystal rod are used as growth devices, the platinum seed crystal rod is provided with a plurality of parallel and obliquely upward platinum sheets, and the kidney-shaped platinum crucible is of an up-down and left-right axisymmetric structure with a small middle part and two large ends According to the invention, the plurality of parallel platinum sheets are arranged on the platinum seed crystal rod to dissipate heat of the platinum rod, so that the absorption value is reduced; the platinum sheets are designed in an upward inclined manner, so that seeding of the seed crystal and observation of the crystal growth process are not influenced, and volatile matters are prevented from falling into the platinum sheets; and a special temperature field formed by the large two ends and the small middle part of the specially-designed kidney-shaped platinum crucible is utilized, so that the influence of a specific platinum seed crystal rod on the temperature field is avoided, meanwhile, melt flowing is accelerated, the viscosity of a boric acid system is reduced, crystal enveloping is reduced, and the crystal quality is improved.
Owner:FUJIAN CASTECH CRYSTALS

Load-bearing cylinder main support structure of large off-axis three-mirror space remote sensing camera

The main bearing structure of the large-scale off-axis three-mirror space remote sensing camera involves the field of space optical remote sensing technology. It solves the problem of large aspect ratios of the main, third and folding mirrors of the camera due to the characteristics of the long focal length and wide field of view of the existing optical system. Due to the large mass, the supporting rigidity of the camera mirror assembly is low and the size envelope is too large, including the front frame, the rear frame, the main load-bearing cylinder, the truss rod assembly and the rib assembly; the main load-bearing cylinder and the front frame and the rear frame All are connected by screws; the truss rod assembly includes two symmetrically arranged truss rods, the upper end of each truss rod is positioned and connected with the front frame, and the lower end of each truss rod is positioned and connected with the rear frame; And the upper end of the rib assembly is connected with the front frame by a titanium alloy joint; the joints of the front frame, the load-bearing tube, the rear frame and the truss rod of the present invention are all in the form of plane assembly, which greatly reduces the difficulty of assembly, and at the same time greatly reduces the production cycle and manufacturing cost.
Owner:CHANGGUANG SATELLITE TECH CO LTD

2sps+rrprr robot grabbing mechanism for plate splicing

The invention provides a 2SPS+RRPRR robot grabbing mechanism used for plate splicing. The 2SPS+RRPRR robot grabbing mechanism comprises an upper platform, a lower platform and three branched chains, wherein a first branched chain and a second branched chain of the three branched chains are of 2SPS forms; the third branched chain is of a RRPRR form, and namely consists of a first rotary pair, a second rotary pair, a second translation pair, a fourth translation pair and a fifth rotary pair which are sequentially connected; the upper platform and the lower platform are separately positioned at the two ends of the first branched chain and the second branched chain; series-connection mechanical arms which are rotatably connected are separately arranged on the upper platform and the lower platform; and tail end tools for picking plates are separately arranged on the upper rotary pair, the lower rotary pair as well as the tail ends of the series-connection mechanical arms. The RRPRR branched chains are arranged, so that envelope of the mechanism body is reduced, and implementation of space operation is facilitated better. The series-connection mechanical arms are additionally arranged, so that the working space of the mechanism is expanded, and operating and monitoring capability of the mechanism is strengthened.
Owner:SHANGHAI AEROSPACE SYST ENG INST

A sliding deployment method and system suitable for large-scale solid-surface antennas in space

The invention discloses a sliding unfolding system suitable for a large space fixed-surface antenna. The sliding unfolding system comprises a fixed-surface antenna, a drive sliding system, unlocking devices and locking mechanisms, wherein the fixed-surface antenna is a plane or a cylindrical paraboloid after being unfolded and is formed by stacking a plurality of equant panels; the drive sliding system comprises a motor, a steel wire rope, a rope winding drum, fixed pulleys, idler wheels and transition blocks; the unlocking devices include interlayer unlocking devices, the transition blocks and interplate unlocking devices; the locking mechanisms are interplate locking mechanisms; various panels are unfolded and then connected through the interplate locking mechanisms; the rope winding drum is arranged at one end of the lowest panel; the motor drives the rope winding drum to rotate; and the rope winding drum, the steel wire rope and the fixed pulleys form a series drive system. The fixed-surface antenna is sequentially deployed by adopting a series order; a traditional hinged unfolding mode is broken; the closing space is reduced to adapt to carrying enveloping; and the sliding unfolding system has the characteristics of being small in overall envelope, few in drive sources, small in locking impact and high in locking rigidity.
Owner:SHANGHAI INST OF SATELLITE EQUIP

A kind of crystal growth method for reducing lbo crystal absorption and crystal prepared therefrom

A crystal growth method for reducing the absorption of LBO crystals and the crystal prepared therefrom. The method is to use boric acid and lithium carbonate as raw materials, and use a waist-shaped platinum crucible and a platinum seed rod as a growth device. The platinum seed rod has multiple pieces Parallel and slanted upward platinum sheets, the waist-shaped platinum crucible is small in the middle and large at both ends, with an axisymmetric structure up and down, left and right. In the present invention, a plurality of parallel platinum sheets are arranged on the platinum seed rod to dissipate heat for the platinum rod, thereby reducing the absorption value; the platinum sheet is designed in an upwardly inclined manner, which does not affect the seeding of the seed crystal and the observation of crystal growth The process prevents volatiles from falling in; the specially designed waist-shaped platinum crucible utilizes the special temperature field formed by the large ends and the small middle to avoid the influence of the specific platinum seed rod on the temperature field while maintaining accelerated melting. body flow, reduce the viscosity of the boric acid system, reduce the crystal envelope, and improve the crystal quality.
Owner:FUJIAN CASTECH CRYSTALS

Configuration and assembly method of remote sensing micro-satellite with separate payload platform

ActiveCN109484673BSmall envelopeLarge stiffness marginArtificial satellitesMicrosatelliteEngineering
The invention provides a remote sensing microsatellite configuration with a low-orbit load platform separated, including a metal frame-plate structure of the platform, an integrated load support structure, a frame-type separation mechanism, a plate-type solar wing deployment mechanism and various equipment. In the frame-plate structure, it is similar to the traditional bottom plate, side plate and roof plate. All structural plates adopt thin metal plate + rib + lightening design; the whole structure is designed and assembled based on the bottom plate. The main force transmission path is from the bottom plate to the side plate to The roof to the load; the integrated structure of the load bracket is installed on the satellite roof; the roof can be connected to the bracket, which can be installed with part of the sky-facing equipment and can also be connected to the solar wing; It is mainly connected to the satellite side panels and roof brackets through fixed solar fins. The satellite configuration space utilization of the invention is high, the structure is compact, the volume is small, the assembly process is open, the test is convenient, and the configuration can not be adjusted under the load replacement situation of the same magnitude.
Owner:AEROSPACE DONGFANGHONG DEV LTD
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