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202results about How to "Solve the carrying capacity" patented technology

Rigidity variable robot towards minimally invasive surgery and working method

The invention relates to a rigidity variable robot towards a minimally invasive surgery and a working method. The rigidity variable robot comprises a mechanical arm, wherein a front end is connected with a mechanical arm support fixed on a bottom plate, the mechanical arm comprises a flexible pipe, multiple joints and multiple groups of rope yarns, the neighboring joints are spherical surface contact, the flexible pipe passes through all of the joints, the rope yarns pass through all of the joints, and the rope yarns are uniformly distributed along a circumference concentrically installed withthe joints, two rope yarns in one group are arranged at two ends of a diameter of the circumference, an end part of one end of the rope yarn is fixedly connected with the joint at a tail end of the mechanical arm, and the other end passes through the mechanical arm support; a bending mechanism, wherein the bending mechanism comprises multiple rotatable turntables installed on the bottom plate, two rope yarns in one group are fixedly connected with the same turntable after passing through the mechanical arm support, the turntable is rotated so that one rope yarn can be retracted and the otherrope yarn can be released at the same time; and a rigid rod, wherein the rigid rod can be stretched into or stretched out of the flexible pipe, so rigidity of the mechanical arm is changed. The robotis capable of providing rigid support to the mechanical arm, and avoiding a human body from being injured.
Owner:SHANDONG UNIV

End-to-end speech encryption method for low-speed narrowband wireless digital communication

The invention provides an end-to-end speech encryption method for a low-speed narrowband wireless digital communication system; the main idea of the method is that synchronous control information during the process of one call is divided into two parts one of which is not changed during the whole call process and the other one of which is changed constantly along with a speech frame, wherein the unchanged part is sent by a control signalling and the changed part is sent together along with speech data. Therefore, the synchronous control information required to be frequently sent is effectively decreased. A synchronous mechanism of the invention has the advantages that (1) a problem on speech interruption is avoided so as to guarantee the coherent speech, (2) as a legitimacy validation is not required to be frequently carried out on the synchronous control information during the call, the synchronous efficiency is effectively improved, (3) the situation of failing to decrypt a plurality of continuous speech frames is avoided, and (4) a problem resulted from the limited bearing capacity of the low-speed narrowband wireless digital communication system is solved.
Owner:THE FIRST RES INST OF MIN OF PUBLIC SECURITY +2

Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same

The invention discloses a Z-direction enhanced underwater sound absorption sandwich composite material and a preparation method for the same. The composite material comprises composite material panels, a sound absorption core material and enhancement structures, wherein the enhancement structures are arranged in the thickness direction of the sound absorption core material, namely a Z direction, between the upper and lower panels. The whole structure of the Z-direction enhanced underwater sound absorption sandwich composite material is formed by a vacuum assisted forming process. Compared with an ordinary sound absorption sandwich composite material, the Z-direction enhanced underwater sound absorption sandwich composite material has the advantages that flat compression strength is greatly strengthened, a compression modulus is improved by more than one order of magnitude, bending rigidity is doubled, sound absorption performance is improved by 10 to 85 percent, and sound absorption performance under high water pressure is improved by 50 to 85 percent; and the forming process has the advantages of high operability, high quality consistency, suitability for the formation of a large-sized composite material component, and the like.
Owner:725TH RES INST OF CHINA SHIPBUILDING INDAL CORP

Productive technology of automobile rear shelf

The invention relates to a productive technology of an automobile rear shelf, which comprises the following steps: (1) laying a glass fiber mat on a lower die and fixing the glass fiber mat and a reinforcing rib on an upper die; (2) evenly spraying polyurethane on the glass fiber mat on the lower die; (3) compressing the glass fiber and the reinforcing rib in a die to form semi-finished products;(4) taking the semi-finished products subject to compression moulding out of the die, and placing the semi-finished products on a cooling jig for carrying out cooling and moulding at normal temperature; (5) polishing the semi-finished products subject to cooling and moulding to smooth the surfaces of the semi-finished products; (6) evenly spraying glue on the two sides of the polished semi-finished products; (7) binding linings on the two sides of the semi-finished products on which glue is sprayed; (8) punching fiber bundles of the glass fiber mat exposed at the edge of the semi-finished products subject to lining binding; (9) installing pull ropes on the punched semi-finished products to obtain the finished products; and (10) inspecting and carrying out vanning. The productive technology of the invention can save manufacturing cost and has the advantages of environmental protection and no pollution.
Owner:WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD

Main wing surface structure of large aspect ratio wing

ActiveCN108216570AHigh bending stiffnessReduce weightWing shapesSpars/stringersLeading edgeAviation
The invention relates to a main wing surface structure of large aspect ratio wing, and belongs to the field of aviation. The main wing surface structure with the large aspect ratio comprises a honeycomb sandwich upper wall panel 1, a cap type reinforced lower wall panel 2, a box type main beam 3, a rear wall 4, a leading edge skin 5, a wing rib 6 and an adhesive 7. The honeycomb sandwich upper wall panel 1 is of a sandwich structure co-cured by carbon fiber composite inner and outer panels and a lightweight paper honeycomb. The cap-type reinforced lower wall panel 2 is of a cap type reinforcedstructure integrally cured by a carbon fiber composite skin and a foam core. The box type main beam 3 is of an integrated structure co-cured by adhering carbon fiber composite materials. The rear wall 4, the leading edge skin 5 and the wing rib 6 are of a carbon fiber composite press plate structure. The adhesive 7 is a room temperature curing paste adhesive. According to the respective bearing characteristics, each component adopts the corresponding structural form, which fully exerts the weight loss advantage of the composite material, and effectively solves the contradiction between the high load bearing and the light weight of the main wing surface structure of large aspect ratio wing.
Owner:中航(成都)无人机系统股份有限公司

Portable thermal loading device for temperature-acceleration composite environment test

The invention discloses a portable thermal loading device for a temperature-acceleration composite environment test, comprising a radome having one end open and the other end closed, electric heating membranes and a fan. The radome is in connection with a centrifuge arm through main body bolts; a testpieces is installed on the centrifuge arm through a table top, and is located in the radome; in the radome, a thermal insulation layer is arranged between an outer wall and an inner wall; a plurality of electric heating membranes are uniformly bonded on the inner wall; the fan is installed on the inner wall and is close to the inner bottom center, and the air supply direction just faces the inner bottom center of the inner wall. The portable thermal loading device employs bonded electric heating membranes to realize heating, thereby synchronously controlling the temperature and acceleration, and improving the simulation capability of a temperature-acceleration composite environment test; the radome is of a three-layer structure, thereby reducing the overall mass, and improving insulation effects; the radome is internally provided with the fan, thereby improving the temperature uniformity and the convection heat exchange efficiency of a heating source.
Owner:GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS

Large opening car spoke type cable supported grid structure

The invention discloses a large opening car spoke type cable supported grid structure which comprises an upper chord rigid grid system and a lower chord tensioning cable-strut system. The upper chord rigid grid system is a structure with a large opening in the middle, and the lower chord tensioning cable-strut system comprises a strop and a plurality of radial tensioning cables, wherein the strop is correspondingly arranged below the opening of the upper chord rigid grid system, and the radial tensioning cables are arranged in a car spoke type in the radial direction of the strop. the end portion of each radial tensioning cable is hinged to the strop, a supporting rod is arranged between the radial tensioning cables and the upper chord rigid grid system in the arrangement direction of the redial tensioning cables, and a diagonal web member is arranged between the strop and the upper chord rigid grid system in the ring direction of the strop. By means of the large opening car spoke type cable supported grid structure, the high strength material characteristic of the tensioning cables is fully used, the cantilever stress state of the upper chord rigid grid system is changed to the stress state of an elastic support continuous beam, the rigidity of the overall structure is guaranteed, building material is saved, and the attractive architectural effect is achieved.
Owner:CHINA SOUTHWEST ARCHITECTURAL DESIGN & RES INST CORP LTD

Electromagnetic drive type magnetic suspension rotating platform

The invention discloses an electromagnetic drive type magnetic suspension rotating platform which comprises an electromagnetic suspension structure positioned on an outer ring and an electromagnetic drive structure positioned on an inner ring, wherein a rotating platform casing is arranged outside the electromagnetic suspension structure and the electromagnetic drive structure; the electromagnetic suspension structure comprises an annular electromagnetic suspension iron core; a plurality of teeth are symmetrically arranged on the annular electromagnetic suspension iron core along the circumference; an electromagnetic suspension winding is wound on each tooth; a high-precision air gap sensor is arranged at the clearance between every two teeth; an annular suspension conductor plate is arranged above the annular electromagnetic suspension iron core; the electromagnetic suspension structure comprises an annular electromagnetic drive iron core; three groups of teeth are symmetrically arranged on the outer side of the electromagnetic drive iron core along the circumference; the electromagnetic suspension windings are continuously wound on each group of teeth; each group of electromagnetic drive winding is in a link type structure; an annular permanent magnet rotor is arranged outside the annular electromagnetic drive iron core; and a photoelectric encoder is arranged on a rotating shaft of the rotating platform casing. The assembly difficulty is reduced and the manufacturability is improved.
Owner:TIANJIN UNIV

Construction method for increasing one-time qualification rate of pile foundation in karst or broken zone area

InactiveCN109537615AWith force transmissionImprove pass rateBulkheads/pilesBedrockKarst
The invention relates to a construction method for increasing one-time qualification rate of a pile foundation in a karst or broken zone area. The construction method comprises the following steps of(1) measuring and laying lines at the position of a pile foundation hole, embedding a steel protective cylinder, and controlling the verticality; (2) utilizing a rotary excavating drill to drill intothe bottom of a clay layer, replacing the rotary excavating drill with a percussion drill after the rotary excavating drill reaches a hard soil layer, reducing the drilling frequency when drilling isconducted at the portion 1-1.5 m deep in a top base rock, and repeatedly conducting drilling up and down until the soil layer is penetrated through; (3) putting out a drilling machine, filling a pilehole with crushed stones and clay, simultaneously putting a guide pipe into the pile hole to spray mixed slurry, and carrying out pre-pressing and compacting; (4) using the percussion drill for continuing drilling a crushed stone layer which is compacted by prepressing, and penetrating through a karst cave or a bottom plate of the crushing zone area until the drill reaches the bottom elevation ofa pile; (5) cleaning the holes, removing the drilling machine, lowering a reinforcement cage, and pouring concrete. The method can eliminate the influences of grouting leakage, hole collapse, pile hole inclination, diameter reduction and the like, reduce the construction cost, simplify the flow and improve the hole formation quality of the pile foundation.
Owner:CHINA RAILWAY CONSTR GROUP

Carbon fiber strip reinforced structure component and implementation method thereof

The invention relates to a carbon fiber strip reinforced structure component. The carbon fiber strip reinforced structure component comprises a structure component and a carbon fiber strip coated on the outer surface of the structure component, wherein the carbon fiber strip is spirally wound and pressed on the outer surface of the structure component. The invention also provides an implementation method of the carbon fiber strip reinforced structure component. The implementation method is characterized by comprising the following steps: (1) winding the head end of the carbon fiber strip; (2) axially and spirally winding and pressing the carbon fiber strip along the structure component; (3) winding the tail end of the carbon fiber strip. The carbon fiber strip is used for coating the structure component, so that the purpose of reinforcing the structure component is achieved; the head end and the tail end of the carbon fiber strip are respectively subjected to press-in winding and tying treatment, so that the purpose of self locking and anchoring is achieved; the carbon fiber strip is not required to be bound by a flammable adhesive, so that the carbon fiber strip still has high restraint effect on the structure component under the high-temperature breakage; the carbon fiber strip has the advantages of high temperature resistance, long service life and environment friendliness.
Owner:GUANGDONG UNIV OF TECH

High-bearing-capacity tensile energy-consuming seismic isolation device with multiple adjustable sliding surfaces

ActiveCN110258812AHigh bearing capacity characteristicsGood horizontal isolation performanceProtective buildings/sheltersShock proofingRelative displacementStructure of the Earth
The invention discloses a high-bearing-capacity tensile energy-consuming seismic isolation device with multiple adjustable sliding surfaces, and belongs to the technical field of constructional engineering structure seismic isolation. The seismic isolation device comprises an upper connecting plate, an upper flange plate, a plurality of U-shaped supports, a curved surface sliding block, a curved surface sliding groove, an upper sliding surface, a lower sliding surface, a lower flange plate and a lower connecting plate. The vertical distance between a top sliding surface of the curved surface sliding block and the upper sliding surface is equivalent to the vertical relative displacement of upper limbs and lower limbs of the multiple U-shaped supports of the same specification, and is also equivalent to the vertical relative displacement between the upper flange plate and the lower flange plate. The radius of curvature of the top sliding surface of the curved surface sliding block is the same as the radius of curvature of the upper sliding surface, and the radius of curvature of a bottom sliding surface of the curved surface sliding block is the same as the radius of curvature of an inner sliding surface of the curved surface sliding groove. The multiple U-shaped supports of the same specification are arranged. The seismic isolation device is high in bearing capacity, good in horizontal seismic isolation, high in tensile energy-consuming characteristic, economical and practical, and environmentally friendly.
Owner:HUAZHONG UNIV OF SCI & TECH

Superfine particle tailing reservoir heightening and capacity expanding stacking-discharging structure capable of achieving one-time dam building by adopting center line method

ActiveCN111305210AIncrease storage capacityExtend production service lifeEarth-fill damsRock-fill damsWaste dumpAbutment
The invention discloses a superfine particle tailing reservoir heightening and capacity expanding stacking-discharging structure capable of achieving one-time dam building by adopting a center line method. The structure is formed by combining an original tailing blocking dam (1), a dam abutment flood intercepting trench (12), a first-stage heightening dam body (2), a second-stage heightening dam body (3), a third-stage heightening dam body (4),..., and an nth-stage heightening dam body; a row of medium-coarse tailing drainage blind drains (9) which are parallel to one another and perpendicularto the axis of the corresponding dam body are constructed in the portion on the top layer of each stage of heightening dam body; draining communication pipes (7) and underground water collecting pipes (11) are laid; drainage floral tubes (8) are buried in the medium-coarse sand drainage blind drains (9); and layers of high-strength anti-corrosion geogrid (6) are laid every 0.5-1.0 m of verticalinterval. According to the invention, solidification of fine particle tailings is accelerated, the mechanical strength index of the fine particle tailings is improved and increased, thus, the capacityof a tailing reservoir is remarkably increased, the production service life is prolonged, and meanwhile, the problems that the capacity of parts of waste dumps are not enough, and mining waste rock is stacked are solved.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES

Widening reinforcing structure tightly adjacent to existing ballastless track roadbed

The invention provides a widening reinforcing structure tightly adjacent to an existing ballastless track roadbed. The influences of stress and deformation on an existing ballastless track railway roadbed body and a base due to a widening roadbed filling load and a train load are effectively eliminated, and meanwhile the problems about the foundation bearing capacity and settlement of a newly-built widening roadbed are solved. The widening reinforcing structure comprises the existing ballastless track roadbed and a newly-built widening filling roadbed located on one side of the ballastless track roadbed in the transverse direction. The newly-built widening filling roadbed comprises a reinforced concrete tray type retaining wall, reinforced concrete pile foundations and a foam light soil filling layer. The reinforced concrete tray type retaining wall is located on one side of the existing ballastless track roadbed in the transverse direction and extends in the direction of a line. The reinforced concrete pile foundations are arranged in a foundation of the newly-built widening filling roadbed in rows at intervals in the direction of the line, and the upper ends of the reinforced concrete pile foundations are in rigid connection with the reinforced concrete tray type retaining wall. The foam light soil filling layer is built above the reinforced concrete tray type retaining wall in a filled manner.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Large-span eccentric lean-against type steel box tied arch bridge surface towing erection construction system

The invention discloses a large-span eccentric lean-against type steel box tied arch bridge surface towing erection construction system. The system comprises a sliding system for supporting and longitudinal sliding of an upper structure of a bridge, a movable supporting device used for supporting the front side of the upper structure of the bridge and a traction system used for dragging the upper structure of the bridge to horizontally move forwards in the longitudinal bridge direction. The movable supporting device is located right in front of the sliding system. The sliding system comprises a temporary supporting structure, a lower sliding way and an upper sliding device. The movable supporting device is a supporting device which is located on a river way and can move forwards and backwards on the river way and comprises a barge and a temporary supporting frame for supporting the upper structure of the bridge. The traction system comprises a traction anchoring structure, a traction mechanism and a traction counter force seat, and the traction counter force seat is located right in front of the upper structure of the bridge. The large-span eccentric lean-against type steel box tied arch bridge surface towing erection construction system is simple in structure, reasonable in design, easy and convenient to construct, good in use effect and capable of simply, conveniently and quickly finishing the surface towing construction process of the large-span eccentric lean-against type steel box tied arch bridge.
Owner:NO 1 ENG LIMITED OF CR20G

Wide dump truck

The invention relates to a wide dump truck, which comprises a driving cab (1), a truck frame (2), a power assembly (3), a transmission system (4), a steering system (5), brake systems (6), a front suspension (7), a back suspension (8), a lifting system (9), a carriage (10) and electrical systems (11), wherein the driving cab (1) is arranged at the upper side of the front part of the truck frame (2), the power assembly (3) is arranged in the inner side of the truck frame (2), the transmission system (4) is arranged in the inner side of the truck frame (2), the steering system (5) is arranged at the inner side and the outer side of the truck frame (2), the brake systems (6) are arranged in the inner and outer sides of the truck frame (2), the front suspension (7) is arranged at the lower side of the front part of the truck frame (2), the back suspension is arranged at the lower side of the middle back part of the truck frame (10), the lifting system (9) is arranged at the upper side of the truck frame, and is connected with the carriage (10), the carriage (10) is arranged at the upper side of the truck frame (2), and the electrical systems (11) are arranged in the inner and outer sides of the truck frame (2). The wide dump truck has the advantages that the defects of the previous wide dump truck are overcome, and a new design platform is provided for the development of large-tonnage wide trucks.
Owner:SHANDONG PENGXIANG AUTOMOBILE

Planetary type triangular crawler running and driving device

InactiveCN109850023AImprove terrain adaptabilityCoordinate to resolve high mobilityEndless track vehiclesHydraulic cylinderTerrain
The invention discloses a planetary type triangular crawler running and driving device. The planetary type triangular crawler running and driving device is mainly used for vehicles which perform scout, transportation or combat along with soldiers under the environment with complex terrain, many obstacles and dangerous circumstances. The planetary type triangular crawler running and driving deviceis mainly composed of a rocker arm, a triangular supporting frame, gears, a driving motor, transmission devices, hydraulic cylinders, driving wheels and a crawler. The rocker arm is fixed to movable devices such as a vehicle body and supported, the driving motor transmits power to the driving wheels through the gears and the transmission devices, and the driving wheels mesh with the crawler to drive the integrity to move forward. According to the planetary type triangular crawler running and driving device, the triangular supporting frame and the rocker arm are connected through bearings and under a free rotating state, when the crawler meets an obstacle, the triangular supporting frame can overturn freely, the crawler is tightly attached to the obstacle to maintain the ground gripping force or overturn the obstacle, and the whole running device has the high terrain adapting capacity; and meanwhile, when the crawler is broken and fractured, the planetary type triangular crawler runningand driving device can still run under a wheel state due to the fact that the driving wheels have power.
Owner:内蒙古第一机械集团股份有限公司
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