2859 results about "Main bearing" patented technology

A gearbox for a wind turbine includes a ring wheel unit provided in a housing; a driving shaft designed to be coupled to the rotor of the wind turbine and a single main bearing or a pair of main bearings which rotatably support the driving shaft in the housing. The ring wheel unit is formed of a sun wheel, a planet wheel, ring wheel which is fixed to the housing in a non-rotating manner and a planet carrier which is rigidly connected to the driving shaft. An additional bearing rotatably supports the planet carrier or the driving shaft relative to the housing. Between the part of the housing having the main bearing or the main bearings and the part of the housing with the additional bearing and the ring wheel, an elastic part is provided with relative torsional stiffness, yet relatively flexible to loads in the axial and / or radial direction.

A wind turbine is presented where the operation lifetime of the main bearing is extended by relieving the main bearing by reducing the mean bending moment on the bearing by means of individual pitch control of the blades of the rotor so as to create an aerodynamic mean tilt moment on the rotor by means of aerodynamic forces on the blades, the tilt moment at least partly counteracting the bending moment caused by the overhang load forces on the main bearing from the gravitational pull on the rotor mass.

The invention discloses an exoskeletal rehabilitation robot for upper limbs. The exoskeletal rehabilitation robot comprises a base, two mechanical arm assemblies and six motor driving components, wherein the base comprises a moving base, an electrical cabinet, an electric lifting post, a base platform, a motor mounting corner bracket, a base rotating motor, a coupling, a base main bearing block, a base and ball screw nut assembly, a base nut seat, a base shared secondary bearing block, a right support, a base linear guide rail assembly and a left support; the mechanical arm assembly comprises a mechanical shoulder girdle assembly, a mechanical shoulder joint assembly, a mechanical elbow joint assembly, a mechanical front arm assembly, a mechanical wrist joint assembly and a mechanical hand part assembly; each motor driving assembly comprises a motor and speed reducing component, a torque sensor component and a driving component which are respectively arranged on the same motor driving base frame. The exoskeletal rehabilitation robot can be worn on the upper limbs of the human body and can be used for assisting the upper limbs of the human body in moving in a three-dimensional space and performing rehabilitation training.

A top for a convertible vehicle, comprising a roof part, said roof part at least partially covering the vehicle in a closed state and being pivotable about a main bearing; a frame element, said frame element being arranged in a rear area of the vehicle; a rear element, said rear element at least partially covering said rear area of the vehicle in a closed state, and a loading lid; said rear element being fixed on said frame element, in such a way as to be pivotable relative to said frame element, by means of a rear bearing arranged at a distance from said main bearing; said frame element being fixed on the vehicle in such a way as to be pivotable relative to the vehicle about an axis arranged in the region of said main bearing; said roof part being pivotable relative to the vehicle about said axis together with the frame element in an open, deposited position of said roof part; said main bearing being firmly connected to said frame element, and said loading lid being fixed on the rear element in such a way as to be pivotable relative to the rear element.

A wind turbine is presented where the operation lifetime of the main bearing is extended by relieving the main bearing by reducing the mean bending moment on the bearing by means of individual pitch control of the blades of the rotor so as to create an aerodynamic mean tilt moment on the rotor by means of aerodynamic forces on the blades, the tilt moment at least partly counteracting the bending moment caused by the overhang load forces on the main bearing from the gravitational pull on the rotor mass.

The invention discloses a novel aircraft main bearing structure, comprising a pushing cabin structure, a star-shaped truss structure (6) and an electronic cabin main framework structure; the upper part of the propelling cabin structure is connected with the electronic cabin main framework and the lower part thereof is taken as a whole star precision detection benchmark surface and an installation surface used for the propelling cabin instruments; the star-shaped truss structure (6) is a load installation frame supported by a supporting rod and arranged in the electronic cabin main framework structure and used for installing effective loads; the lower end of the supporting rod is fixedly connected with the upper part of the propelling cabin structure; as the main bearing structure adopts an external framework side plate structure and an internal start-shaped truss structure to form a mixed main structure with dual bearing paths (internal bearing path and external bearing path) so as to transmit the whole star load, the force transmission path is short and continuous, the structure is compact, the center of mass is low, and the main bearing structure meets the requirement of the whole satellite of high rigidity and small inertia.

A nonmodular tibial prosthesis having a retainer for a modular bearing on the superior surface of a tibial base, a nonmodular primary bearing directly molded to the base, and a mechanical release member mounted on the tibial base in contact with the nonmodular primary bearing. The release member includes a wedge portion with a superiorly posteriorly inclined face, and is designed to be driven anteriorly upon actuation so as to force the primary bearing off of the tibial base, after which the primary bearing and release member are removed and replaced with a modular bearing.

A gearbox for a wind turbine includes a ring wheel unit provided in a housing; a driving shaft designed to be coupled to the rotor of the wind turbine and a single main bearing or a pair of main bearings which rotatably support the driving shaft in the housing. The ring wheel unit is formed of a sun wheel, a planet wheel, ring wheel which is fixed to the housing in a non-rotating manner and a planet carrier which is rigidly connected to the driving shaft. An additional bearing rotatably supports the planet carrier or the driving shaft relative to the housing. Between the part of the housing having the main bearing or the main bearings and the part of the housing with the additional bearing and the ring wheel, an elastic part is provided with relative torsional stiffness, yet relatively flexible to loads in the axial and / or radial direction.

A wind turbine main bearing realized to bear a shaft of a wind turbine, which shaft is caused to rotate by a number of blades connected to the shaft is disclosed. The wind turbine main bearing includes a fluid bearing with a plurality of bearing pads arranged about the shaft. Also disclosed is a wind turbine with a number of blades connected to a shaft and realized to rotate the shaft, which wind turbine includes as main bearing a wind turbine main bearing. Further described is a method of performing maintenance on a wind turbine, including the steps of halting a rotation of the shaft, operating a lifting arrangement to raise the shaft, and removing a bearing pad of the wind turbine main bearing from the bearing housing of the wind turbine main bearing.

A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably supports the rotor hub and planet carrier relative to the ring gear and supporting structure. The drive assembly further includes two substantially independent force transmission paths for transmission of forces reacting with forces exerted by the wind turbine rotor hub. A first of the force transmission paths acts from the rotor hub via the main bearing to the supporting structure primarily for transmission of overhang load forces and bending moment forces and a second of the force transmission paths acts from the rotor hub via the planet carrier primarily for transmission of rotational forces.

An all terrain vehicle has a lubrication system that draws from an oil pan and lubricates the main bearings and the piston. A drive shaft for the vehicle is positioned outside of the oil pan such that the oil pan's lateral dimension may be decreased. Additionally, a lubricant pump pickup is located within a recess in the bottom of the oil pan such that the pick-up is at about the same vertical height as the lower surface of the crankcase. The vehicle is also shiftable from two-wheel drive to four-wheel drive. The shifting mechanism is located within the crankcase or transmission case. A locking collar selectively engages or disengages two of the four wheels from the output.

The invention relates to a convertible top for a convertible, comprising a front shell piece, a middle shell piece and a rear shell piece; said shell pieces, when in the closed state, being arranged as a roof over a passenger compartment of the convertible; said front shell piece being capable to be raised during a positively controlled opening operation such that it is moved over the middle shell piece; said rear shell piece being capable to be rotated into a folded-over position; the three shell pieces being designed such that they can jointly pivot counter to a direction of travel about a main bearing into a packaging position; wherein in said packaging position said front shell piece and said middle shell piece are oriented in the same direction over said rear shell piece, that is stored in the folded-over position. The invention further relates to a driving device for a convertible top, comprising a main bearing, a first link, a second link, an intermediate link, said intermediate link being coupled to said second link for activation purposes, a four-bar linkage, said four-bar linkage being coupled to said first link for activation purposes, a first bearing point, a driving cylinder, said driving cylinder being coupled with said main bearing at said first bearing point, and a push and pull rod, said push and pull rod being driven by said driving cylinder and being designed for a simultaneous action of force on the intermediate link and the four-bar linkage.

A prestressed or post-tensioned composite structural system for bridge floors, road beds, pedestrian walkways, building floors, building walls, or similar structural elements. The structural system comprises a composite structure comprising an unfilled grating as a base component, and a prestressed, post-tensioned reinforced concrete slab as a top component. The base grating component is preferably a plurality of main bearing bars without any distribution bars or tertiary bars. The upper portions of the main bearing bars are embedded in the concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete.

A lightened rotating member for a machine. The lightened member includes a plurality of radially machined penetrations within at least one main bearing support journal of the rotating member. The plurality of penetrations is formed around the circumference of the main bearing journal face, with the penetration centerline directed radially toward the rotating member's axial centerline. An even number of penetrations may be utilized with minimal adverse effect on the balance of the rotating member. Odd numbers of penetrations may require subsequent rebalancing. The rotating member may be any rotating member that utilizes one or more main bearing support journals.

An external heat exchanger is used to transfer heat from a compressor lubricant to an expanded working fluid, thereby cooling the lubricant. The heat exchanger may also be used to sub-cool condensed working fluid with the same flow of expanded working fluid. A horizontal scroll-type compressor includes an intermediate lubricant sump between a main bearing support and a scroll member. A counterweight on the crankshaft can travel through the lubricant in the intermediate sump to splash the lubricant around. A horizontal scroll-type compressor can include multiple machined surfaces that are utilized to precisely center and align components of the compressor.

A shell low-pressure rotary compressor and a control type and application for refrigerant and oil return of the compressor comprise a compression component and a motor component arranged in the shell. The compression component comprises one and more cylinders, pistons arranged in the cylinders, sliding pieces arranged in sliding piece trough of the cylinder, an eccentric crankshaft driving the piston and an upper bearing and a lower bearing supporting the eccentric crankshaft; the motor component comprises a motor rotor, and a motor stator; the shell is provided with a refrigerant diffluence device which is arranged on top or side surface of the shell; the refrigerant diffluence device comprises a diffluence pipe which is internally provided with a spring pipe which adjusts the diffluence rate. An air suction muffler is arranged between the motor component and the compression component; a radial spacing is arranged between the air suction muffler and a main bearing, and / or the motor rotor or the eccentric crankshaft or the upper bearing which is provided with a round plate. The invention has the advantages of high safety degree, low manufacture cost, smart operation, good lubrication performance, little oil consumption, high compression efficiency, and long service life.

The subject invention provides a thrust bearing assembly having only three thrust flanges in total. One portion of the thrust bearing assembly comprises a main bearing having an arcuate bearing shell with a concave inner surface and a convex outer surface. A thrust washer having hydrodynamic features abuts one of the edges of the main bearing and extends radially outwardly from the outer surface thereof forming a thrust surface. The other of the edges of the main bearing is free of a flange. The free edge of the main bearing is preferably spaced inward from other thrust surfaces and the edge has a substantially narrower width than the other thrust surfaces. The other portion of the assembly may include a traditional thrust bearing having one thrust flange with hydrodynamic features and another thrust flange free of hydrodynamic features, both extending radially outwardly therefrom or may include another main bearing abutting a pair of thrust washers, one having hydrodynamic features and one free of hydrodynamic features, extending radially outwardly from the other main bearing. In either configuration, the thrust flange or thrust washer that is free of hydrodynamic features is opposite the thrust washer having hydrodynamic features of the main bearing.

A crank bearing is disclosed that includes a semicircular upper bearing and a semicircular lower bearing, which can be split from each other. The upper bearing includes a first oil passage for introducing engine oil from the outside to a gap between the crank bearing and a crank journal, and a second oil passage for permitting the engine oil to flow in the circumferential direction of the crank bearing. The first oil passage includes an inner circumference opening, which is open to the inner circumference of the main bearing. The upper bearing includes a non-undercut portion in which no oil passage is formed on the trailing side of the inner circumference opening in the rotational direction of the crank journal. A chamfer oil passage for discharging the engine oil in the second oil passage to the outside from the axial direction of the crank bearing is provided in at least one of the lower bearing and a region on the proceeding side of the circumference opening in the rotational direction of the crank journal.

A small gas turbine engine for use in an UAV such as a cruise missile, the gas turbine having a combustor forming a primary burn zone and a secondary burn zone, and in which fuel is injected into both the primary and the secondary burn zones by either a rotary cup injector or a plurality of fuel injector nozzles. The secondary burn zone with separate fuel injection allows for the diameter of the engine to be reduced in size but still allow for adequate power and efficiency to be reached for powering the vehicle. Air flow from the compressor is used to cool the combustor walls before being injected into the combustor, and to pass through and cool the guide nozzles and a main bearing located near the hot section of the combustor prior to being introduced into the combustor.

A prestressed or post-tensioned composite structural system for bridge floors, road beds, pedestrian walkways, building floors, building walls, or similar structural elements. The structural system comprises a composite structure comprising an unfilled grating as a base component, and a prestressed, post-tensioned reinforced concrete slab as a top component. The base grating component is preferably a plurality of main bearing bars without any distribution bars or tertiary bars. The upper portions of the main bearing bars are embedded in the concrete component permitting horizontal shear transfer and creating a composite deck structure which maximizes the use of tensile strength of steel and the compressive strength of concrete.

The invention discloses an integral one-step molding technique of a wind power blade. The integral one-step molding technique is characterized in that the blade is molded by two steps, and one part of a molding blade of a lower die is used for die combination with the balance of molding part of an upper die so as to form the whole wind power blade. The integral one-step molding technique of the wind power blade has the advantages that an integral molding composite material blade shell has continuous glass fiber at the joint of an upper shell and a lower shell, thus greatly improving the whole performance of the blade; the blade shell is a closed structure, thus having higher bearing capability; therefore, the integral one-step molding technique can lighten the weight of a main beam of a main bearing part, and simultaneously and thoroughly eliminate the failure possibility of the blade caused by bonding quality.

The invention discloses a binary vector spraying pipe capable of realizing an S-bent shading function, and belongs to the technical field of aero-engine spraying pipes. The binary vector spraying pipe is characterized in that the front section of a circular turning square barrel body (1) is connected with an engine to form a supporting structural member of the whole spraying pipe; an actuating barrel (2), a pull rod (3), a convergence adjustment plate (4), an expansion adjustment plate front section (5), an expansion adjustment plate rear section (6), an actuating barrel (8), a pull rod (9), an actuating barrel (10), a pull rod (11) and an expansion adjustment plate (12) are used as main bearing adjustment mechanisms, so that adjustment on a throat area and an outlet area, the S-bent shading function and a vector deflection function are realized. The binary vector spraying pipe retains a vector deflection function for conventional binary vector spraying pipe throat area adjustment and different-angle adjustment; the function for detecting whether a high-temperature component is completely shaded or not from the back of the engine can be realized, and high infrared hiding performance is achieved; the defect that the conventional S-bent spraying pipe cannot be adjusted is overcome, and vector deflection is realized; the binary vector spraying pipe is simple in structure, high in reliability and high in invisibility.

The invention discloses a reinforcement method and a reinforcement structure for treating railway soft soil roadbed settlement overweight before operation. The reinforcement structure mainly consists of five parts, namely a main bearing structure system, a reinforced cushion layer structure system, a foundation bed drainage system, a settlement observation system and a reserved grouting system. The technical problems that the existing roadbed is greatly damaged, the construction period is long, the construction property is low, the quality is difficult to control and the problem that the soft soil roadbed settlement overweight is caused in the conventional technical scheme are effectively solved.

The invention relates to the field of new energy wind power generation systems, in particular to a method for early warning and diagnosis of the temperature of a main bearing of a wind turbine generator. The method comprises the following steps that firstly, wind power plant monitoring data is acquired; secondly, parameters related to the temperature of the main bearing of the wind turbine generator are obtained; thirdly, a normal temperature model of the main bearing of the wind turbine generator is established; fourthly, the theoretical value of the real-time normal temperature of the main bearing of the wind turbine generator is calculated, wherein the real-time values of the parameters related to the temperature of the main bearing of the wind turbine generator in the second step are selected from the real-time data collected in the first step, the real-time values of the related parameters are input into a neural network trained in the third step, and the normal temperature valueof the main bearing of the wind turbine generator is generated; fifthly, whether the real-time temperature of the main bearing of the wind turbine generator is normal or not is judged. By means of themethod, faults of the main bearing of the wind turbine generator are effectively judged in advance, an extra sensor does not need to be installed, and the diagnosis precision and the diagnosis time advance are remarkably improved.

The invention relates to a method for producing a carbon fiber-completely winded composite gas cylinder with an aluminum inner container. The carbon fiber-completely winded composite gas cylinder with the aluminum inner container has main bearing structures of the aluminum inner container and a carbon fiber completely-winding layer. The carbon fiber completely-winding layer on a cylinder body is prepared by alternately winding longitudinally spirally winding fiber layers and circumferentially winding fiber layers in a laying order designed optimally. Glass fiber layers are winded on the surface of the carbon fiber completely-winding layer and are used as impact resistant protective layers of the carbon fiber-completely winded composite gas cylinder with the aluminum inner container. The carbon fiber-completely winded composite gas cylinder with the aluminum inner container has main technical indexes of a safety factor great than or equal to 3.4 and fatigue cycle number N great than or equal to 10000. The method provided by the invention satisfies reasonable stress field distribution, and guarantees that the carbon fiber-completely winded composite gas cylinder with the aluminum inner container can bear maximum burst pressure under the condition of a minimum fiber use amount, produces cracks located at a cylinder body and does not produce fragments. The method guarantees that the aluminum inner container of the carbon fiber-completely winded composite gas cylinder with the aluminum inner container is always in an elastic deformation state under preset work pressure, and guarantees that the carbon fiber-completely winded composite gas cylinder with the aluminum inner container has lasting and good gas tightness and optimal safety.

A roof construction for a motor vehicle having a removable roof, includes a first, front hard roof part, a main bearing fixed on the motor vehicle body, a first, articulated connection, the first, front hard roof part being connected via the first, articulated connection to the main bearing, the first, front hard roof part being pivotable from a closed position into a lowered position in a trunk by means of the first, articulated connection, a second roof part containing a rear window, a second, articulated connection, the second, articulated connection being arranged pivotably outside the first, articulated connection on the same main bearing, the second roof part being pivotable from a closed position into a lowered position in the trunk via the second, articulated connection, the first, front hard roof part being arranged in its lowered position above the second roof part, and a loading area for loading purposes remaining below the second roof part.

The invention discloses an aluminum alloy material suitable for manufacturing large-section products and a preparation method thereof. Accounted in weight percentage, the alloy components are as follows: 7.4 to 8.4wt percent of Zn, 1.4 to 2.2wt percent of Mg, 1.1 to 1.7 percent of Cu, 0.18 to 0.3 percent of Zr and Al as the rest. The aluminum alloy material has higher intensity, excellent toughness and excellent corrosion resistance performance (conductance rate); the most important point is that the aluminum alloy material has extremely excellent heat treatment harden ability performance, and is particularly suitable for manufacturing the large-section products. The material can be applied to the key large type main bearing structure parts in the fields of aerospace, transportation, war industry, and the like.

The invention provides a semi-automatic folding moped, which can be automatically folded and spread, and is labor-saving, fast, convenient and safe in use. The semi-automatic folding moped comprises a frame, a front wheel, a back wheel, a saddle and an electric control system, wherein the frame comprises a front fork, a front vertical pipe, a handle, a back flat fork, a front connecting seat and a main bearing seat; the two ends of an upper connecting rod and the two ends of a lower connecting rod are rotatablely connected between the front connecting seat and the main bearing seat to form into a four-connecting rod structure; and the lower connecting rod is connected with the back flat fork though a pull rod. The semi-automatic folding moped is characterized in that an extension pipe structure supports a supporting pipe; the semi-automatic folding moped is further provided with a thrust mechanism of the supporting pipe; the electric control system comprises a three-phase DC brushless motor, a microcontroller and a first switch; when the frame is positioned in a folding status and needs to be opened, the first switch transmits a signal to the microcontroller to control the three-phase DC brushless motor to drive the back wheel to be backward turned till that the frame is spread; and when the frame is positioned in a spreading status and needs to be driven, a speed-adjusting handle controls the back wheel to be turned through the microcontroller to drive the moped to run.