183results about How to "Increase limit speed" patented technology

The invention discloses a double-crank mechanism engine, belonging to the technical field of engines. The double-crank mechanism engine comprises a gas cylinder and a piston capable of performing straight reciprocating motion in the gas cylinder, wherein two parallel crankshafts are arranged at the two sides of the gas cylinder; a connecting rod is hinged between corresponding crankshaft pins of the two crankshafts to form a double-crank mechanism; a connecting rod insertion slot and a slide block are arranged on a piston rod on the rear end of the piston, the connecting rod is inserted to the connecting rod insertion slot in a sliding manner, a guide block is fixed in the engine; a guide rail for sliding the slide block is formed on the guide block; the slide block is inserted to the guide rail; transmission gears are arranged on the end parts of the crankshafts; an output gear is engaged between the two transmission gears; and an output shaft is arranged on the output gear. The double-crank mechanism engine can be used for effectively lowering the abrasion and the impact of the piston and a cylinder sleeve, improving the reliability of the ceramic material applied to the engine and improving the practical heating efficiency.

The invention provides a swash plate type axial piston pump or a motor, which comprises a shell, a main shaft, a plurality of piston components, a swash plate, a cylinder, a distributive flow disk and a connecting part, wherein the connecting part comprises a first part and a second part which relatively swing, the first part is combined with the main shaft and synchronously rotates with the main shat, the swash plate is combined with the second part and synchronously rotates with the second part, a cylindrical inner hole is arranged on the center of the cylinder, the main shaft stretches into the cylindrical inner hole, the main shaft and the cylindrical inner hole are matched, and when the main shat rotates, the cylinder is driven by the piston components to rotate. The main shaft and the cylinder of the swash plate type axial piston pump can form clearance fit, the transmission line of the swash plate type axial piston pump is the main shaft, the connecting part, the swash plate, the piston components and the cylinder, and the swash plate type axial piston pump has the advantages of excellent assembly, high total efficiency and small lateral force, and can achieve the advantages of coaxial or through-shaft connection and the like.

The invention discloses a hybrid type dynamic pressure gas thrust bearing. The hybrid type dynamic pressure gas thrust bearing comprises two outer plates. An inner plate is arranged between the two outer plates in a clamped mode. A foil type elastic piece is arranged between each outer plate and the inner plate. The two end faces of the inner plate are each provided with groove type patterns of the regular shapes. The groove type patterns on one end face are in mirror symmetry with the groove type patterns on the other end face. The hybrid type dynamic pressure gas thrust bearing has the rigid characteristic of the high limit speed of a groove type dynamic pressure gas journal bearing and has the flexible characteristics of the high impact resistance and the high loading capacity of a foil type dynamic pressure gas journal bearing, and the hybrid type dynamic pressure gas journal bearing can be applied in the ultrahigh-speed field of large loads.

The invention relates to a laser heating rotating atomization method and device used for manufacturing metal or alloy powder. A traditional plasma gun is replaced by a single high-power laser (6) or a plurality of high-power lasers (6) focusing in different angles, a bar material is rotated at a high speed through a high-speed motor (5), and the bar material is automatically fed through a material pushing motor (9). Through the structures, a complex connecting mechanism of a traditional carbon brush and a copper electrode is omitted. Using limit of the carbon brush in a plasma rotating atomization device is eliminated, the metal and alloy powder can be manufactured in a carbon brush-free mode, the phenomena of frictional heating of the carbon brush and wear to the carbon brush are eliminated, and therefore the limit speed of the bar material is effectively increased, dust and noise pollution is greatly reduced, device stability is enhanced remarkably, and work efficiency is improved. The method and device can be applied to the field of manufacturing the metal or alloy powder through an atomization method.

The invention relates to a ceramic ball bearing, particularly relates to a precise ceramic bearing and a machining process thereof and belongs to the field of bearings and machining thereof. According to the precise ceramic bearing and the machining process thereof, a rolling body utilizes a silicon nitride ceramic material, the density is reduced, the centrifugal force is reduced by more than 40%, the limited rotating speed is improved by more than 30% and the service life of the bearing is prolonged by more than 50%. Meanwhile, the silicon nitride ceramic material has the advantages of small friction coefficient, strong self-lubricating capability, wear resistance, high-temperature resistance and the like. Furthermore, a sleeve ring machining process adopts cold rolling and the effect of the cold rolling procedure reduces a lathing procedure, shortens the production cycle, improves the production efficiency and reduces the consumption of raw materials. If the precise ceramic bearing is manufactured by a common cutting machining process, the utilization rate of materials is commonly 40-50%, but if the precise ceramic bearing is manufactured by a cold rolling method, the material utilization rate can reach 70-80%.

The invention belongs to the field of turbochargers for internal combustion engines, in particular to a rotor supporting mechanism of a rolling bearing turbocharger. It includes a bearing sleeve and two springs, two thrust sleeves and two bearings in the bearing sleeve. The two springs are symmetrically arranged in the bearing sleeve and connected to each other. Put the spring into the thrust sleeve and apply pre-tightening force. Two bearings are respectively arranged on the end face of the thrust sleeve. Both bearings are angular contact rolling bearings. The advantage of the present invention is that ceramic rolling bearings are used instead of ordinary floating bearings, which improves the mechanical efficiency and transient response capability of the turbocharger, solves the vibration problem of the rolling bearing turbocharger, and improves the steady-state performance and performance of the turbocharger. The service life of the rolling bearing is improved, the support rigidity of the rolling bearing is improved, the limit speed of the rolling bearing is increased, the requirement of high-speed operation of the turbocharger is met, the lubrication problem of the turbocharger is solved, the reliability of the rolling bearing supercharger is improved, and the balanced transmission The force system meets the requirements for the normal operation of the rolling bearing turbocharger.

The invention provides a high-speed rotation ultrasonic grinding main shaft. A high-coaxiality conical hole is used for positioning, and the centering precision is improved. Through the design of a flange in the shape like the Arabic number 7, the contact distance is lengthened, one-time machining is conducted, and the installing reliability of an ultrasonic transducer is improved. No mechanical contact exists between a primary coil and a secondary coil, and no abrasion exists. A closed space is formed by an aluminum shell, and magnetic field leakage is obstructed. Cold nitrogen makes direct contact with a heating piezoelectric ceramic piece in a main shaft cavity, a large amount of heat is brought away, and the heat dissipation efficiency is improved.

A two-stage bearing using electromagnetically driven speed regulation between two stages is composed of an electromagnetically driven speed regulating mechanism and a two-stage bearing mechanism. It can increase the extreme rotation speed of whole bearing to maximum and decrease the relative rotation speed between two stages to minimum if it is used as a single-stage bearing for longer service life.

The invention discloses a hybrid type dynamic pressure gas journal bearing. The hybrid type dynamic pressure gas journal bearing comprises a bearing outer cover, an inner cover and a foil type elastic piece arranged between the bearing outer cover and the inner cover. The outer circumferential face and the two end faces of the inner sleeve of the bearing are each provided with groove type patterns of the regular shapes. The groove type patterns of one end face are in mirror symmetry with the groove type patterns on the other end face. The axial contour lines of the groove type patterns on the outer circumferential face correspond to the radial contour lines of the groove type patterns on the two end faces one to one. The axial contour lines and the radial contour lines are connected. The hybrid type dynamic pressure gas journal bearing has the rigid characteristic of the high limit speed of a groove type dynamic pressure gas journal bearing and has the flexible characteristics of the high impact resistance and the high loading capacity of a foil type dynamic pressure gas journal bearing, and the hybrid type dynamic pressure gas journal bearing can be applied in the ultrahigh-speed field of large loads.

The invention relates to an interdigitated rotor engine. The complete machine comprises four shell components which are arranged side by side and fixed through bolts; in the three cavities of the inside of the rotor engine, the upper and lower cavities are used to hold a rotor assembly, and the middle cavity is used to hold a transmission system composed of an output shaft, an inner sleeve, an outer sleeve and a multiplex gear. By using the interdigitated rotor engine, power transmission can be realized and the alternate transposition and rotation of rotors can be realized so that the volumes of a plurality of cylinders composed of two interdigitated double-vane or four-vane rotors and the shell can change periodically. A gas port on one side of the rotor cavity is used for air admission and air exhaust, a spark plug on the other side is used for ignition, and the engine capable of performing continuous operation can be realized through four strokes.

The invention discloses a trolley limiting buffer device of a bridge crane. The trolley limiting buffer device comprises a trolley rail, and end beams are fixedly mounted at the two ends of the trolley rail; a trolley frame is arranged on the trolley rail; the top surfaces of the end beams are connected with car stops through shock absorbers; magnets are mounted at the centers of the side surfacesof the car stops through mounting holes; the car stops are hinged to the top surface of the trolley rail; wheel chocks are further mounted in the positions, between the two car stops, on the trolleyrail; hydraulic rods are fixedly mounted on the left and right sides of the trolley frame; wheels are mounted on the trolley frame through wheel shafts; and cylindrical magnets are mounted at one endsof the hydraulic rods through mounting sleeves. According to the trolley limiting buffer device, the hydraulic rods are in contact with the car stops hinged to the trolley rail, buffer and limiting are achieved, during collision, the wheels are buffered and decelerated through rotation of the car stops and deceleration strips in the wheel chocks, collision force is smaller, the car stops and thehydraulic rods are protected, rebound force of a trolley is smaller, double buffer and limiting for the trolley are achieved, the structure is simple, cost is low, and loading and unloading efficiencyof the crane is high.

The invention discloses a low-speed high-torque and permanent-magnet synchronous high-speed automatic tool-changing electric spindle. The electric spindle comprises a motor body, and a stator, a rotor, a rotor shaft, a spring pre-tightening mechanism, a front bearing and a rear bearing are arranged inside the motor body. The electric spindle further comprises a connection base fixed to the rear end of the motor body, a connector fixedly connected to the connection base, a steam cylinder assembly fixedly connected to the connector, a rear cover arranged at the end of the steam cylinder assembly and a front end cover connected to the front end of the motor body. A tool loosening and pulling mechanism is arranged in the center of the rotor shaft, a pulling claw is arranged at the front end of the tool loosening and pulling mechanism, a disc spring assembly is installed in the middle of the tool loosening and pulling mechanism, a high-performance sensor is adopted together, and therefore automatic tool changing is more convenient and accurate and rapider. A magneto-electric coder is adopted at the rear end, so that low-speed torque output is more balanced. Compressed air is adopted for non-contact air sealing so that higher rotation speed can be obtained. The electric spindle is simple and compact in structure and powerful in function, is smaller than common electric spindles with the same power in size, has the advantages that the speed is low and the torque is high and can be widely applied to high-speed and low-speed precision machining of various materials.

A device for limiting an unbalance in inside a centrifugal, with an electric motor to drive a rotating component disposed in an enclosure around a rotational axis, wherein a rotor of the electric motor is non-rotatably connected to the rotating component, a bearing assembly for the rotor and the stator to be arranged in, and a stabilizer unit which generates as a function of a disturbing force acting on the rotating component a balancing force that is adapted to compensate said latter, the bearing assembly including support means such as to make the stator radially movable, and the stabilizer arranged radially outside and/or inside said stator and/or support means of the bearing assembly and having stabilizing means whereby in aggregate a radial balancing force can be generated.

The invention relates to a two-way elliptic gear engine which is integrally in a cylindrical shape. In the two-way elliptic gear engine, an output shaft, a bearing, a disk member, a plurality of pistons and an elliptic gear form a cylindrical rotor; two shells which are arranged oppositely, an inlet valve, an outlet valve, a plurality of hot fire heads, a gear frame and a plurality of duplex eccentric gears form a stator; the space between the rotor and the stator forms an annular combustion chamber, and the plurality of pistons rotate in the annular chamber and divide the combustion chamber into a plurality of cylinders; and the elliptic gear, the duplex eccentric gears and a disk inner gear form a transmission system for carrying out one-way differential transposition rotation among the pistons, so that the volume among the cylinders is changed to realize the purpose of forming the engine by four strokes.

The invention relates to a precession rotary engine. The precession rotary engine comprises a rotor assembly composed of a disc rotor member and an output shaft member and a cylindrical stator composed of an upper case and a lower case which are opposite, wherein rotors rotate in the stators in the rotation-precession ratio of 1:3 so that the volumes of six cylinders formed between the rotors andthe stators change periodically; a pair of gas ports on one side of the circumference of the entire case are used to realize air admission and exhaust and a spark plug on the other side of the case is used to strike a light, thus the four-stroke principle can be realized and the six-cylinder engine with very large power-weight ratio can be formed.

The invention relates to an electroplating CBN grinding wheel for efficient and precise gear profile grinding. The electroplating CBN grinding wheel comprises a dish-shaped base body and a material grinding area at the edge of the dish-shaped base body, the mass of the material grinding area is 4%-15% of the total mass of the base body, the cross-section of a material grinding layer on the material grinding area is in an isosceles trapezoid shape, and the upper bottom and the two lateral edges are chamfered. A manufacturing method of the electroplating CBN grinding wheel includes the steps of firstly machining the base body of the grinding wheel, and then sequentially conducting negative and positive pole alternative electrochemistry oil removing, clamp and electrostatic adsorption film insulation assembling, negative and positive pole alternative electrolytic treatment, ballistic method preplating, grinding material assembling, thickening and grinding wheel electroplating on the base body of the grinding wheel. The using linear velocity of the electroplating CBN grinding wheel can achieve 250 m/s, and the grinding feeding amount achieves 4 m/min-10 m/min and is much higher than that of a common grinding wheel. The roughness Ra can achieve 0.4 micrometers, the surface quality requirement of a workpiece can be met, and gear efficient and precise gear profile grinding can be successfully achieved.