618results about How to "Increase stiffness" patented technology

The invention generally concerns a spine stabilization system having one or more flexible elements having an opening or slit. The flexible element may be integrally formed in a rod having ends capable of receiving fasteners. The flexible element may limit rotation, flexion-extension, or lateral bending of the spine. The slit or opening may form helical pattern on the rod, and more than one slit or opening may be provided. The flexible element may be conformable to the natural spinal movement.

The invention relates to improved means for preventing eversion and subsequent obstruction of thin-walled, floppy gastrointestinal liners implanted in the digestive tract of an animal. The implantable devices include an anchor adapted for attachment within a natural body lumen and a thin-walled, floppy sleeve open at both ends and defining a lumen therebetween. A substantial length of the sleeve has material characteristics that result in the sleeve being prone to eversion in the presence of retrograde pressures. Exemplary eversion-resistant features provide an increased stiffness and/or an increased friction coefficient between the anchor and the proximal end of the sleeve to resist eversion. In some embodiments, the eversion-resistant feature includes an anti-buckling element, such as a wire coupled along the substantial length of the sleeve.

The invention discloses a two-dimensional parallel micromotion platform driven by piezoceramic, which comprises a base, a motion platform, piezoceramic drivers, a displacement magnifying mechanism, a guiding mechanism and the like, wherein a first piezoceramic driver and a second piezoceramic driver are arranged in cylindrical grooves in the base respectively in a mutual perpendicular manner; and the output ends of the drivers closely lean against an input hinge of the displacement magnifying mechanism to transmitting movement to the motion platform through the displacement magnifying mechanism and the guiding mechanism. Through the adoption of the secondary magnifying mechanism and the compound parallel four-pole guiding mechanism, the two-dimensional parrel micromotion platform has the advantages that the structure of the micromotion platform is compact; high natural frequency is ensured when the large stroke movement is realized; the X-axis direction and the Y-axis direction can be effectively decoupled; zero friction, zero clearance, high-precision, high stability, quick respond of the movement transmission are ensured by the combination of the piezoceramic drivers and the flexure hinge platform; displacement sensors are arranged in the X-axis direction and the Y-axis direction respectively by the motion platform; and the full-closed loop control of the micromotion platform is convenient to realize.

A thermoplastic olefin (TPO) composition comprises (1) a major amount by weight of (a) a substantially linear homopolymer or copolymer of a C₂-C₁₀ α-olefin in major proportion to (b) a long chain branched a linear homopolymer or copolymer of a C₂-C₁₀ α-olefin, (2) a minor amount by weight of a cross linkable elastomer, and (3) at least one thermally decomposing free radical generating agent present in an amount sufficient to promote an increase in melt strength of the composition over that of the melt strength of the linear homopolymer or copolymer of a C₂-C₁₀ α-olefin alone and insufficient to substantially degrade the α-olefinic polymers. The TPO composition is prepared by melt blending the components at a temperature sufficient to melt said homopolymers or copolymers of a C₂-C₁₀ α-olefin and thermally decompose said agent. Articles are thermoformed from the thermoplastic olefin.

A polishing pad is disclosed which is less likely to cause scratches, and has an excellent planarization performance and polishing stability. In one aspect, the invention provides a polishing pad comprising an ultrafine fiber-entangled body formed of ultrafine fibers having an average fineness of 0.01 to 0.8 dtex, and a polymeric elastomer. The polymeric elastomer has a glass transition temperature of −10° C. or below, storage moduli at 23° C. and 50° C. of 90 to 900 MPa, and a water absorption ratio, when saturated with water at 50° C., of 0.2 to 5 mass %.

A powered prosthetic thigh can have a proximal portion configured to couple to a prosthetic hip socket and can have a distal portion attached to the proximal portion. The distal portion can have a distal connector configured to couple to a prosthetic knee. The powered prosthetic thigh can also have a computer controlled actuator configured to rotate the prosthetic thigh relative to the prosthetic hip socket.

The invention relates to a device for testing a coaxial inversion rotor wing of a helicopter, wherein a motor is installed on a base and connected to an inner shaft transmission and an outer shaft transmission in series; the output end of the inner shaft transmission is connected with the inner shaft of the rotor wing; the output end of the outer shaft transmission is connected with the outer shaft of the rotor wing; the inner shaft and the outer shaft are installed on a bearing base of the inner shaft; both an inner shaft coupler and an outer shaft coupler are provided with a torque meter; and a torque scale is installed on the bearing base. According to the invention, the thinking mode that the transmissions for rotor wing test must be gearboxes integrated together is broken through; by means of two gearboxes which are associated in function and independent in structure, tests of performance and reliability of the coaxial inversion rotor wing are realized; and the device is capable of respectively measuring dynamic data of lift force, torque and bending moment of two sets of rotor wings at the same time.

Provided is a wheel-leg composite type four-leg robot. The wheel-leg composite four-leg robot is characterized by comprising an inner car frame, an outer car frame, a cushioning assembly, two pairs of upper leg parallel connection assemblies and four wheel type legs with identical structures. The inner car frame is arranged inside the outer car frame. The inner car frame is connected with the outer car frame through the cushioning assembly. The upper leg parallel connection assemblies of two front legs arranged below the outer car frame are symmetric with each other in a left and right mode, and two front-wheels type legs connected with the parallel connection assemblies are symmetric in a left and right mode. The upper leg parallel connection assemblies of two rear legs arranged below the inner car frame are symmetric with each other in a left and right mode, and two rear-wheels type legs connected with the parallel connection assemblies are symmetric with each other in a left and right mode. Each leg is in a (2-UPS+U) R series and parallel hybrid connection. The wheel-leg composite type four-leg robot has the advantages that the load is big, the rigidity is good, the coupling is small, the obstacle crossing advantage of the leg mechanism is fully applied, the complexity of the control and a mechanical structure is lowered, the installation is easy and convenient, and the maintenance is convenient. The positions and stress information of upper legs and lower legs can be obtained through sensors, and the self-adaption control in an unknown environment can be achieved.

A snowboard boot (200) includes an upper boot (204) secured to an outsole (206). The boot upper includes a vamp opening (208) that is closed by a tongue (210) and a selectively securable vamp fastener (216). The tongue (210) carries a pocket (218) on a lower end (212) thereof, and first and second snap fasteners (222) on an upper end (214) thereof. A semi-rigid tongue stiffener (202) can be selectively secured to an anterior side of the tongue (210) utilizing the pocket and snap fasteners to selectively increase the stiffness of the boot and resistance to forward flexure by a predetermined degree.

Magnet wires wound in slots in a lamination stack of a dynamoelectric machine are encapsulated, in whole or in part, with plastic. The plastic may be thermally conductive and have features molded therein that enhance heat transfer. The plastic may stiffen the armature and increase its critical speed. Characteristics of the plastic, its geometry and its distribution may be varied to adjust spinning inertia and resonant frequency of the armature. The magnet wires may be compressed into the slots, by application of iso-static pressure or by the pressure of the plastic being molded around them. Larger magnet wire can then be used which increases the power of the electric motor using the armature having the larger magnet wire. A two or three plate mold may be used to mold the plastic around the armature. Balancing features can be molded in place. The plastic can have a base polymer that is a blend of two or more polymers and various thermally conductive fillings.

In a method for chassis control of a motor vehicle which has at least one wheel suspension, a vehicle body, and a shock absorber having a rebound stage, whose stiffness is adjustable, and a compression stage, whose stiffness is adjustable, the stiffness of the compression stage is changed for a compressive load of the shock absorber generated by a specific vehicle body movement, and the stiffness of the rebound stage is additionally changed for a subsequently following tensile load of the shock absorber generated by the specific vehicle body movement, or the stiffness of the rebound stage is changed for a tensile load of the shock absorber generated by a specific vehicle body movement, and the stiffness of the compression stage is additionally changed for a subsequently following compressive load of the shock absorber generated by the specific vehicle body movement.

The invention provides a preparation method of a fiber-reinforced thermoplastic composite material, which comprises the following steps: impregnating fibers in a melt containing a thermoplastic resin, thereby obtaining a preimpregnated belt; and knitting the preimpregnated belt to obtain the fiber-reinforced thermoplastic composite material. The continuous-fiber-reinforced thermoplastic composite material is formed by a knitting technique to obtain the composite material in a three-dimensional structure, so that the composite material has high rigidity in both horizontal and longitudinal directions, thereby greatly enhancing the rigidity of the thermoplastic composite material. The invention also provides application of the fiber-reinforced thermoplastic composite material in preparing railway fastener system components. The experimental result indicates that the tensile strength of the fiber-reinforced thermoplastic composite material is 450-690 MPa, the tensile modulus is 25000-36000 MPa, the bending strength is 780-850 MPa, and the bending modulus is 25000-40000 MPa.

The invention relates to a large-scale thin-wall valve body lost foam casting process, comprising the following steps of: (1) pre-foaming polystyrene beads; (2) curing the polystyrene beads; (3) moulding a white mould; (4) drying the white mould; (5) assembling the white mould; (6) brushing lost foam casting fireproof coating on the surface of the obtained white mould; (7) drying the white mould coated with the coating; (8) burying a box and compacting; (9) pouring molten iron; (10) insulating heat after pouring is finished, and then opening the box; and (11) cleaning off redundant anti-deformation ribs, and polishing and levelling by adopting a grinding wheel to obtain a thin-wall valve body. According to the process disclosed by the invention, when the white mould of the valve body is moulded, a cross-shaped rib which can prevent a round hole from deforming is additionally arranged in a flange hole, stiffness of the white mould is increased, deformation can be prevented; a T-shaped rib, an I-shaped rib and a diagonal tie rib are additionally arranged in an inner cavity of a square hole after assembling and adhesive bonding, an anti-deformation rib for a square opening is additionally arranged outside the square opening, and therefore deformation of the white mould after assembling is effectively overcome. When a casting is cleaned, the anti-deformation ribs inside and outside are removed, thus deformation of a workpiece is avoided and rejection rate is reduced.

A bumper reinforcement beam includes a first sheet forming at least one tube including a front wall, and a second sheet welded to and supporting the front wall in a laminar arrangement adding stiffness to the front wall. A related method includes uncoiling and welding the first and second sheets together, and forming the first sheet into a tubular shape with a first portion forming a front wall, the second sheet supporting the first portion. An apparatus includes a pair of uncoilers for uncoiling first and second sheets of material together, a welder securing the first and second sheets together, and a roll forming mill configured to roll form the sheets into a tubular shape, where the first sheet defines a front wall and portions of the second sheet supporting the front wall.

The invention provides a glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material and a preparation method thereof. The glassfiber-reinforced hydrolysis-resistant low-warpage nylon 66 composite material comprises the following components in parts by weight: 50-85 parts of nylon 66, 10-40 parts of glassfibers, 2-10 parts of warpage deformation improvers, 0.5-2 parts of hydrolytic and heat stabilizers, 1-4 parts of compatilizers and 1-2 parts of other auxiliary agents, wherein the auxiliary agents are one or a mixture of more of a siloxane coupling agent and an antioxidant or a parting agent. The product has high strength and rigidity, also well solves the problems of easy warpage deformation and great dimension change of the product due to glassfiber addition, has both excellent hydrolytic resistance and temperature tolerance and also has good processability and attractive appearance.

A prosthetic foot can include a resilient heel member that can be removably coupled to the bottom of a plate-like foot member of the prosthetic foot. The heel member can be made of a resilient material, such as foam. The heel member can have a shape that corresponds to a foot cover and allows the prosthetic foot to fit within a foot cover. A lip may be provided to engage with a corresponding portion of the foot cover to secure the heel member within the foot cover. A rib can be located on the bottom of the heel member to create horizontal or vertical displacement of the foot at heel strike. A recess can be created in the heel member to removably receive an insert, which can alter the stiffness of the heel member.

The invention discloses a metamorphic parallel-connection robot palletizer mechanism. One end of a first driving rod of the metamorphic parallel-connection robot palletizer mechanism is connected with a rack; the other end of the first driving rod is connected with one end of a fourth connecting rod; the other end of the fourth connecting rod is connected with a seventh connecting rod; one end of a second driving rod is connected with the other end of the rack; the other end of the second driving rod is connected with one end of a fifth connecting rod; the other end of the fifth connecting rod is connected with the fourth connecting rod; one end of a first connecting rod is connected with the rack; the other end of the first connecting rod is connected with one end of a second connecting rod and is also connected with the first driving rod, the fourth connecting rod and a third connecting rod; one end of the third connecting rod is connected with the first driving rod, the fourth connecting rod and the second connecting rod simultaneously; the other end of the third connecting rod is connected with one end of a sixth connecting rod; the other end of the sixth connecting rod is connected with one end of the seventh connecting rod; the other end of the seventh connecting rod is connected with a tail end implanter; one end of a spring is connected with the second connecting rod; the other end of the spring is connected with the third connecting rod. Compared with a conventional open-chain type parallel-connection robot palletizer, the metamorphic parallel-connection robot palletizer mechanism has the advantages of high rigidity, high bearing property, small error accumulation, and the like.

A radiator core support has a lower radiator core support extending in a lateral direction of a vehicle body, radiator core support sides extending upward respectively from both end portions of the lower radiator core support, a fan shroud portion provided inside the lower radiator core support and both the radiator core support sides, and a radiator core support upper cover provided to cover at least an upper side between both the radiator core support sides. The lower radiator core support, both the radiator core support sides, and the fan shroud portion are formed integrally, and the radiator core support upper cover is fixed detachably with respect to the lower radiator core support, both the radiator core support sides, and the fan shroud portion.

A fuel pump installation area for a vehicle for enhancing the stiffness of the fuel pump built in a fuel tank and for enhancing the stiffness of an installation area of a tank installation stay on the fuel tank side. In a motorcycle in which a fuel tank is installed to the body frame and a fuel pump is provided within this fuel tank, the fuel pump is installed to the fuel tank via a pump installation member. To the pump installation member, a tank installation stay for fixing the fuel tank to the body frame is installed. The left and right side walls may be formed by depressing the center of the underside of the fuel tank upwardly over the front and the rear. Concave-shaped engaging members are installed by engaging left and right convex portions provided on the body frame with these engaging members, respectively.

The invention relates to mineral/crystal whisker reinforcement polypropylene composite material which has excellent spraying property, which is mainly comprises the following raw materials with proportioning by weight: 50-70% polypropylene, 15-30% inorganic crystal whisker, 5-15% inorganic mineral, 5-10% polarity modifier, 5-15% toughening agent POE, 0.1-0.4% anti-oxidant and 0.1-3% other auxiliary agent, wherein inorganic mineral and crystal whisker are respectively conducted with surface treatment trough coupling agent, polarity modifier is polyolefine thermoplastic elastomer grafted by maleic anhydride, and the grafting rate is 0.8-1.2%. The product of the invention has excellent spraying property, and high rigidity and strength. The product of the invention can be used as car components such as guard strips and the like, can be also used on household appliances such as laundry machine and the like, and especially is suitable for places which have higher requirement for spraying such as various external decorative elements of cars, etc.

The invention relates to a bridge deck structure composed of prefabricated UHPC (Ultra High Performance Concrete) slabs and a steel bridge deck and a construction method thereof. The bridge deck structure comprises the steel bridge deck and the UHPC slabs covering the steel bridge deck, wherein the UHPC slabs are arranged at intervals, UHPC cast-in-situ belts are arranged between adjacent UHPC slabs, and the bottoms of the UHPC slabs are connected with the steel bridge deck through cement based adhesives so as to form the composite bridge deck structure. Shear connectors can be appropriately arranged in the cast-in-situ belts so as to enhance the connecting effect of the prefabricated slabs and the steel bridge deck. The construction method of the structure comprises the following steps: constructing steel beams and the steel bridge deck; manufacturing and installing the UHPC slabs; constructing the UHPC cast-in-situ belts; and constructing the surface of the bridge deck. The structure is reasonable in stress, high in strength and stiffness, capable of effectively avoiding the generation of steel bridge deck defects, simple, capable of reducing relatively large shrinkage in a cast-in-situ process of UHPC, and easy to realize batch production in factories; and the structure has important practical values and favorable economic benefits.

The invention discloses a fastening method of steel-self density concrete composite construction, which is characterized by the following: adopting steel-concrete composite structure; adopting self density concrete on concrete material; proceeding original concrete structure element surface treat; assembling steel; stirring and casting self density concrete; demoulding; curing. This invention possesses simple and stable construction, which can increase bearing capacity, stability and fatigue resistance property of the concrete structure.

The invention discloses an RV speed reducer cycloidal gear contour profiling method based on deformation quantity compensation, and relates to the field of design and manufacturing of an RV speed reducer cycloidal gear. On the basis of the profiling gear contour determined by three conventional gear contour profiling methods, the extrusion deformation quantity of the cycloidal gear contour in the practical operation process is used as the profiling quantity to be compensated back into the gear contour of the cycloidal gear; the condition better conforms to the cycloidal gear contour profiling of an RV speed reducer applied to high-precision and high-load conditions; the transmission error of the RV speed reducer under the high-load condition can be further eliminated; and the rigidity of the speed reducer is improved. The method provided by the invention comprises the following steps of 1, obtaining the cycloidal gear contour M by using the three conventional profiling methods; 2, performing stress analysis on a cycloid pin gear engagement pair; and obtaining the cycloidal gear contour deformation quantity through calculation; and 3, using the deformation quantity as the profiling quantity to be compensated back into the cycloidal gear contour M for obtaining the final profiling contour.

The invention discloses a deep sea net box cultivating apparatus for offshore wind field, which comprises an offshore wind turbine foundation, wherein an operation platform is mounted on the top portion of the offshore wind turbine foundation; a rotary sleeve ring fixing system is mounted on a lower end of the offshore wind turbine foundation; the rotary sleeve ring fixing system is connected to a rotary arm mechanism; the rotary arm mechanism is connected to an offshore net box module through a cable connecting rod component; the rotary sleeve ring fixing system comprises a reinforced cylinder sleeve; an upper rotary sleeve ring and a lower rotary sleeve ring are respectively mounted on an upper end and a lower end of the reinforced cylinder sleeve; and the upper rotary sleeve ring and the lower rotary sleeve ring are respectively connected to the rotary arm mechanism through an upper connecting buckle and a lower connecting buckle. According to the utility model, by adopting the apparatus provided herein, the offshore wind field can be applied with various purposes; organic combination between the offshore wind power generation and the offshore net box cultivation is realized; the space of the offshore wind field and the offshore wind power are fully utilized, thus improving the overall economy benefits.

The invention belongs to the technical field of architectural structure engineering and relates to a rectangular concrete filled steel tubular column - steel beam connection node. The rectangular concrete filled steel tubular column - steel beam connection node comprises an upper through partition board (3), a lower through partition board (4), a connection board (5) and a high-strength bolt (6). The rectangular concrete filled steel tubular column - steel beam connection node is characterized in that the upper through partition board (3) and the lower through partition board (4) penetrate through the wall of a rectangular concrete filled steel tubular column (1) and are in bevel welding connection with the periphery of the wall, the connection board (5) is connected between the lateral wall of the rectangular concrete filled steel tubular column (1) and a web of a steel beam (2), the lower through partition board (4) is connected with the bottom flange of the steel beam (2) through the high-strength bolt (6), and the upper through partition board (3) is in bevel welding connection with the upper flange of the steel beam (2). The invention further provides two construction methods of the rectangular concrete filled steel tubular column - steel beam connection node. The rectangular concrete filled steel tubular column - steel beam connection node and the construction methods thereof have the advantages that location is fast for site installation, the construction period can be shortened obviously, and the prefabricated construction progress is promoted.

Wet clutch (100) or friction plate brake has an essentially hollow cylindrical shaped balance piston (14) that is coaxial to a clutch hub (2) and is rigidly connected with an apply piston support device (12), an essentially ring shaped spring support (14.1), and an essentially cylinder shaped wall (14.3) that has an essentially cylinder shaped contact surface (14.4). The cylinder shaped contact surface (14.4) is axially (ax) displaceable and is bordered by an essentially cylinder shaped contact surface (8.5) of an apply piston (8) so as to form an equalizing space (16). The contact or support surfaces (14.4, 8.5) of the balance piston (14) and the apply piston (8) are provided coaxial between the clutch hub (2) and the apply piston support device (12).

A bicycle frame provided with increased stiffness in one direction without increasing the stiffness in another direction. In particular, a bicycle frame is provided that increases the stiffness in the lateral direction while not increasing the stiffness in the vertical direction.

The invention discloses an indoor rail-type intelligent patrolling robot. The indoor rail-type intelligent patrolling robot comprises a robot terminal system. The robot terminal system comprises a sectional material rail. The sectional material rail is installed on the indoor wall, and a movement mechanism, a movement driving mechanism and a detecting mechanism are installed on the sectional material rail. The detecting mechanism comprises a holder and a detecting assembly and is installed on the movement mechanism. The movement mechanism is driven by the movement driving mechanism and drives the detecting mechanism to vertically move along the sectional material rail, wide-range detection on an indoor to-be-detected device is achieved in cooperation with running of the holder, and the robot terminal system carries out power supply and communication in a cable pulling mode or carries out power supply in a wire sliding contact mode and carries out communication in a power line carrier mode. The indoor rail-type intelligent patrolling robot is compact and attractive in structure, rapid and convenient to install, stable and reliable in running, high in positioning accuracy, wide in detection range and high in automation degree.

A polyhedral rolling mechanism is characterized by comprising an upper platform, a lower platform, a first branched chain, a second branched chain, a third branched chain and a fourth branched chain. Structures and sizes of the upper platform and the lower platform are identical, and structures and sizes of the first branched chain, the second branched chain, the third branched chain and the fourth branched chain are identical; the upper end of the first branched chain and an A1 side of the upper platform are fixed, the lower end of the first branched chain and a B1 side of the lower platform are fixed; the upper end of the second branched chain and an A2 side of the upper platform are fixed, and the lower end of the second branched chain and a B2 side of the lower platform are fixed; the upper end of the third branched chain and an A3 side of the upper platform are fixed, and the lower end of the third branched chain and a B3 side of the lower platform are fixed; the upper end of the fourth branched chain and an A4 side of the upper platform are fixed, and the lower end of the fourth branched chain and a B4 side of the lower platform are fixed; and the polyhedral rolling mechanism is formed through the connection. According to the polyhedral rolling mechanism, a closed chain structure is utilized, the robot rigidity is enhanced, loading capacity is improved, structure and control are simple and moving and veering in a plane can be achieved.

An F rail connector structure of a medium-and-low-speed magnetic suspension system rail aims to improve torsional stiffness and the altitude difference misalignment prevention ability of an F rail connector, and improve mounting precision of the rail. An inner guiding and limiting groove and an outer guiding and limiting groove which longitudinally extend are formed in the inner bottom and the outer side wall of a wing rail at the connecting end of each of two adjacent F rails respectively, the opening end of a U-shaped connecting plate is embedded into the inner guiding and limiting grooves and the outer guiding and limiting grooves, long slotted holes are formed in the U-shaped connecting plate in the longitudinal direction and the horizontal direction at intervals, and bolt connecting components which penetrate through the long slotted holes enable the U-shaped connecting plate and the two adjacent F rails to be detachably connected.