76results about How to "Reduce bending load" patented technology

A method for deploying a cardiac-assist device is disclosed. In accordance with the illustrative embodiment, an introducing tube, such as a catheter, sheath, or the like is inserted into the vascular system and advanced beyond the aortic arch. The cardiac-assist device is then inserted into the tube, advanced through it, and deployed from its distal end. In some embodiments, the diameter of the cardiac-assist device expands when it deploys from the distal end of the tube.

Systems and methods for providing variable geometry winglets to an aircraft are disclosed. In one embodiment, a winglet includes a base portion configured to attach to a wing. The winglet further includes a body portion. In turn, the body portion includes at least one of a deflectable control surface, a shape memory alloy (SMA) bending plate, and a SMA torque tube. The base portion is configured to attach to the wing such that the body portion projects at an upward angle from the wing.

A downwind morphing rotor that exhibits bending loads that will be reduced by aligning the rotor blades with the composite forces. This reduces the net loads on the blades which therefore allow for a reduced blade mass for a given maximum stress. Also provided is a pre-aligned configuration rotor whereby the rotor geometry and orientation does not change with wind speed, and instead is fixed at a constant downwind deflection consistent with alignment at or near the rated wind speed conditions. Also provided is a twist morphing rotor where the airfoil-shapes around the spars twist relative to the wind due to aerodynamic forces so as to unload the rotors when there is a gust. This can help reduce unsteady stresses on the blade and therefore may allow for reduced blade mass and cost. The twist morphing rotor may be combined with either downwind morphing rotor or pre-alignment rotor.

A variable compression ratio device for an internal combustion engine comprises a control shaft (7) that varies a compression ratio of the internal combustion engine in accordance with a rotational displacement, and a linear actuator (13, 16, 17, 18). A connecting link (12) connects a first point (14) offset from a rotation axis (7a) of the control shaft (7) to an actuator rod (13) of the linear actuator (13, 16, 17, 18). Thus, a bending load acting on the actuator rod (13) is reduced, and controllability of the compression ratio is improved.

A steering apparatus includes: an output shaft that outputs a steering force to wheels of a vehicle; a steering arm which turns about the output shaft, and to which two tie rods, to which the wheels are respectively connected, are attached; a stopper which is provided in a vicinity of the output shaft, and restricts an angle of the turning of the steering arm; a worm wheel that is fixed to the output shaft; a worm that is driven by a motor, and meshes with the worm wheel; a bearing that rotatably support the worm; a housing that holds the bearing; and a worm damper that is provided at an axial inner side or an axial outer side of the bearing in an axial direction of the worm, and is elastically deformable so as to move the worm in the axial direction, as defined herein.

The invention provides a paddle of a wind power generating set. The paddle comprises a paddle root section (6), a paddle tip section (5) and a connection piece which connects the paddle root section (6) and the paddle tip section (5) and has an intensity less than those of the paddle root section (6) and the paddle tip section (5); when the paddle of the wind power generating set is blown by strong winds, such as typhoon and the like, and loads exceed the bearing capability of the connection piece, the connection piece fractures, thus the paddle tip section falls off; and due to the falling of the paddle tip section, the diameter of the paddle of the whole wind power generating set and the rotor swept area are decreased, and further bending loads applied to a tower frame and a foundation by the whole paddle are decreased. The tower frame and the foundation are stored in the strong wind environment such as typhoon and the like by the paddle of the wind power generating set, and the loss of the whole wind power generating set is reduced. The invention also provides the wind power generating set.

A fan failure braking device of an aero-engine comprises a fan shaft, a fan blade, a bearing support piece and a bearing component, wherein a rotor brake disc is arranged on the fan shaft; the fan blade is mounted on the fan shaft; one end of the bearing support piece is mounted on an aero-engine casing, the bearing support piece is provided with a stator brake disc which circumferentially surrounds the rotor brake disc and is radially spaced from the rotor brake disc; one end of the bearing component is coupled with the other end of the fan shaft, and connected with the bearing support piece by a predetermined bending moment; when the fan blade fractures, the fan shaft deflects outwards, so that when the mutation bending moment between the bearing component and the bearing support piece exceeds the predetermined bending moment, the bearing component and the bearing support piece are disconnected, and thus the rotor brake disc and the stator brake disc are jointed. when the fan blade fails and fractures, rub-impact occurs between the rotor brake disc and the stator brake disc, limits the radial displacement of bending of the fan shaft and reduces the rotational speed of the fan shaft and the FBO (Fan Blade Out) load.

The invention discloses an accurate continuous bending method of a U-shaped large forging. The method is realized through an arc-shaped inlet female mold, a male mold matched with the female mold, and a back pressure mold with a bent guiding plate. The method comprises the following steps: heating a forging blank to perform preforging; performing back pressure trimming; performing residual heat accurate positioning; enabling the bent guiding plate to drive the bent part of the forging to move and be bent along the arc-shaped track of a female mold inlet, and the like. The method has the advantages that the surface of the bent part is high in quality and small in damage, and the symmetry of the forging is high.

Wind turbine comprising a rotor and a generator, said rotor comprising a rotor hub and one or more rotor blades and said generator comprising a generator stator and a generator rotor, wherein the hub is rotatably mounted on a frame, the generator rotor comprises a carrying structure carrying magnetic or electromagnetic elements, one or more circumferentially arranged substantially axial protrusions are attached to said rotor, wherein said axial protrusions extend into the generator rotor carrying structure, and one or more flexible couplings are arranged between one or more of said axial protrusions and said carrying structure.

A direct drive wind turbine comprising a rotor and a generator, the rotor comprising a hub and a plurality of blades and being rotatably mounted on a frame, and the generator comprising a generator rotor and a generator stator, further comprising one or more dampers arranged between the rotor and the generator rotor and extending at least partially in an axial direction.

A leg guide for use in a leg of a jack up unit adapted to provide sliding guidance of the leg during vertical movement of the leg. The leg guide has a first portion contacting an edge of a leg chord and a second portion contacting a face of the leg chord along a longitudinal plane opposite the contact plane of the first portion. The edge contacting guide has a deflecting guide unit, which uses a compressible member sandwiched between two rigid plates. As the leg moves, the teeth of the leg chord contact the edge guide unit, with the compressible member absorbing compressible loads acting on the leg chord. The second portion provides for a face plate mounted transversely to the edge contacting guide for reducing the build-up of horizontal moment acting on the leg chord during the vertical movement of the leg and for reducing bending moments acting on the leg.

The invention discloses an electromechanical automatic leveling rotating base. The electromechanical automatic leveling rotating base comprises an upper end flat plate, a connecting plate, a rotatingmechanism, a horizontal sensor, a control display unit, a first motor driver, three second motor drivers and three sets of leveling supporting mechanisms; the rotating mechanism comprises a first stepping motor, a shaft connecting block and a thrust bearing; each leveling supporting mechanism comprises a supporting frame, a second stepping motor, a lead screw, a sliding table, an upper end connecting piece, a middle connecting piece, a lower end connecting piece, a supporting foot, and two optical shafts; and the control display unit comprises a central processor, a display screen, a key arrayand a receiver. The electromechanical automatic leveling rotating base utilizes the principle of chase-type leveling, the central processor detects level degree data of the horizontal sensor in realtime to control rising and falling of the three supporting feet, and thus leveling is achieved; meanwhile, the central processor further detects an input instruction of the key array and a receiver instruction, and responds to the instructions; and the electromechanical automatic leveling rotating base has the advantages of simple structure, low cost, miniaturization and automation.

The invention provides an aerodynamic device configured for being mounted to an aerodynamic structure of an aircraft, the aerodynamic device having a spanwise length, a chordwise width, a leading edge section along a leading edge of the device, for being mounted to the aerodynamic structure of the aircraft, and a trailing edge section along a trailing edge of the device, for providing a required aerodynamic profile, wherein a first chordwise extending segment of the trailing edge section is moveable in a spanwise direction with respect to the leading edge section or with respect to a second chordwise extending segment of the trailing edge section.

A pole hub for a collapsible shelter, such as a tent, canopy, or sun-shade is configured and adapted to connect at least two pairs of poles to each other in manner such that the pairs of poles are able to pivot relative to each other about an axis, while each pair of poles remains generally rigid.

Wind turbine comprising a rotor, a generator and a tower, said rotor comprising a rotor hub and one or more rotor blades and said generator comprising a generator stator and a generator rotor, wherein the rotor hub is rotatably mounted on a frame and the generator and tower are arranged on the same of the rotor, and the generator stator is attached to said frame substantially in a plane perpendicular to the rotor's rotational axis, and wherein the generator rotor is rotatably mounted on a part of the generator stator.

An actuator for a rotary function element, having a housing with at least one pressure means supply and being closed at both sides by a cover, in which housing a piston is guided to reciprocate in a sealing manner, the piston containing diametrically opposed, convolution-like connecting links for a transverse axis of an actuator shaft rotatably mounted in one cover, and having two guide rods Firmly anchored in the housing only at one end and engaging into guides in the piston, with the one guide rod anchored in one cover, whereas the other guide rod is anchored in the other cover, and the two guides end blind in the piston in opposite directions.

A tower portion for a wind turbine includes at least one wall segment and at least one opening segment. The opening segment includes an opening, one or more inner edges, two side edges, an upper edge and a lower edge, the opening being delimited by the one or more inner edges. The wall segment is shaped as less than a full 360° ring. The opening segment is coupled with the wall segment by the side edges. The opening segment and the wall segment form segments of a ring and when coupled form a full 360° ring. The opening segment has a variable thickness increasing from the side edges to the inner edges.