47results about How to "Decrease the relative speed of motion" patented technology

The invention relates to a method used for reducing oxygen content of czochralski silicon. The method comprises following steps: the power of a bottom auxiliary heater is adjusted in crystal pulling process, crucible rotating speed is adjusted, argon flow rate and furnace pressure are adjusted. According to the method, no new device is used, effects of thermal field existing parts are achieved fully via technological parameter adjustment and combination based on an original thermal field; the method is reasonable and simple compared with a conventional oxygen reducing method; no other impurity is introduced in the whole crystal pulling process, and the other performance of monocrystalline silicon is not influenced; cost is low; and effect is excellent.

The invention discloses a buffering despinning damping device for satellite docking, comprising a split buffering structure and a despinning damping structure; the split buffering structure comprises a buffering body, a linear spring damper, a split structure and an arrival sensor; the despinning damping structure comprises a despinning body, a rotary transmission disc and a rotary motor. The buffering despinning damper is applicable to satellite capture under weak impact condition, and high relative speed and large angular speed tolerance can be provided for a capturing mechanism; the split buffering structure arranged in the damping device experiences collision buffering with the inner wall of an engine nozzle of a target satellite, and relative movement speed in the collision process is reduced; the spinning damping structure that drives the split buffering structure in rotation is provided, and the relative angular speed of the split buffering structure to the inner wall of the engine nozzle of the target satellite is thus reduced.

The invention relates to the field of gas compression, fluid transportation and vacuum-pumping, in particular to a double-cylinder translational rotary compressor. The double-cylinder translational rotary compressor comprises a cylinder body, a crankshaft and two translational pistons, wherein an inner chamber of the cylinder body is divided into a left chamber and a right chamber the middle parts of which are communicated with each other; the crankshaft is provided with two eccentric structures which run through the left chamber and the right chamber; the two translational pistons are movably connected with the two eccentric structures of the crankshaft respectively; outer side faces of the two translational pistons are tangent with inner side faces of the left chamber and the right chamber respectively, so as to form a left crescent-shaped working chamber and a right crescent-shaped working chamber; sliding plates are hinged to insides of the left chamber and the right chamber respectively; sliding plate grooves are arranged on the two translational pistons respectively; two sliding plates are extended into the sliding plate grooves respectively, and divide the left working chamber and the right working chamber into an expansion chamber and a compression chamber respectively; and feed openings and discharge openings are arranged on the expansion chamber and the compression chamber respectively. The double-cylinder translational rotary compressor has the advantages of obviously improving the volumetric efficiency, improving the mechanical reliability and the mechanical efficiency, and reducing the friction loss.

The invention relates to a translational rotor compressor, which comprises a rotor 1, a cylinder body 2, a sliding blade 3 and an end cover, and is characterized in that a flat rotor chute 4 is arranged on the rotor 1; a flat cylinder body chute 5 is arranged on the cylinder body 2; and the sliding blade 3 has a T-shaped structure or an L-shaped structure, and consists of a radial bluff body 3a and a tangent bluff body 3b which are perpendicular to each other, wherein the radial bluff body 3a is arranged inside the rotor chute 4 and is matched with the rotor chute 4 in a sliding way, and the tangent bluff body 3b is arranged inside the cylinder body chute 5 and is matched with the tangent bluff body 3b in a sliding way. The rotor 1 is limited by the sliding blade 3 and only performs translational rotation, and the swinging radius of each mass point on the rotor 1 is equal to the eccentric distance of the rotor 1 opposite to a cylinder hole on the cylinder body 2; and because the valueof the eccentric distance is small, the relative kinematic velocity of the rotor 1 relative to the end cover and the cylinder body 2 is small as well, namely the friction and the abrasion between therotor 1 and the end cover and between the rotor 1 and the cylinder body 2 are small. Moreover, the sliding blade 3 and the rotor 1 always adopt the means of surface contact, so that the sealing reliability of the translational rotor compressor is higher than that of line contact.

An eccentric shaft type translational rotor pump and engine comprises a first eccentric shaft, a second eccentric shaft, a rotor and a cylinder body; the first eccentric shaft and the second eccentricshaft are the same in eccentric distance, in addition, a first eccentric shaft first shaft and a second eccentric shaft first shaft can be rotationally arranged on the cylinder body, and a first eccentric shaft second shaft and a second eccentric shaft second shaft can be rotationally arranged on the rotor; the rotor or / and the cylinder body is provided with a rotor groove or / and cylinder body groove, a slide sheet can slide in the rotor groove or / and cylinder body groove, and the slide sheet is in jointing sealing with the outer wall surface of the rotor or the inner wall surface of the cylinder body so that the spaces, located on the two sides of the slide sheet, of the rotor and the cylinder body can be isolated; meanwhile, the inner space located between the rotor and the cylinder body is divided into two independent spaces through the zone where the outer wall surface of the rotor is in jointing sealing with the inner wall surface of the cylinder body; and the volume of the two independent spaces is subjected to periodical change along with rotation of the rotor.

The invention relates to a translational rotor compressor, which comprises a rotor 1, a cylinder body 2, a sliding blade 3 and an end cover, and is characterized in that a flat rotor chute 4 is arranged on the rotor 1; a flat cylinder body chute 5 is arranged on the cylinder body 2; and the sliding blade 3 has a T-shaped structure or an L-shaped structure, and consists of a radial bluff body 3a and a tangent bluff body 3b which are perpendicular to each other, wherein the radial bluff body 3a is arranged inside the rotor chute 4 and is matched with the rotor chute 4 in a sliding way, and the tangent bluff body 3b is arranged inside the cylinder body chute 5 and is matched with the tangent bluff body 3b in a sliding way. The rotor 1 is limited by the sliding blade 3 and only performs translational rotation, and the swinging radius of each mass point on the rotor 1 is equal to the eccentric distance of the rotor 1 opposite to a cylinder hole on the cylinder body 2; and because the value of the eccentric distance is small, the relative kinematic velocity of the rotor 1 relative to the end cover and the cylinder body 2 is small as well, namely the friction and the abrasion between the rotor 1 and the end cover and between the rotor 1 and the cylinder body 2 are small. Moreover, the sliding blade 3 and the rotor 1 always adopt the means of surface contact, so that the sealing reliability of the translational rotor compressor is higher than that of line contact.

The invention discloses a device for reducing frictional resistance and a method for reducing viscous frictional resistance of fluid by means of the device. The device comprises rolling bodies and a rolling skin, and the rolling bodies are inlaid into the surface of the rolling skin. The method comprises the step that the surface of a moving object is covered with the rolling skin which is provided with the rolling bodies in an inlaid mode on the relative movement interface of the moving object and the fluid. Compared with the prior art, the device and the method have the advantages that the relative movement surface of the moving object and the fluid is covered with a layer of the rolling skin, relative movement of the fluid drives balls or rollers on the surface of the skin to rotate, therefore, the relative movement speed between the fluid and the object surface is decreased, and the viscous resistance of the fluid is decreased. The method is suitable for the surfaces of objects onwhich the fluid and a solid relatively move, such as the surfaces of all objects moving in the fluid or the inner surfaces of pipelines in which the fluid moves and has the wide application prospect in the fields of high-speed transportation and transportation.

The invention relates to a low-noise high-efficiency food processing machine, which comprises a machine base and a stirring cup, wherein a motor is arranged in the machine base; the stirring cup comprises a cup body and a crushing knife; the crushing knife comprises a crushing blade and a knife shaft; the crushing blade is positioned in a cup body; the knife shaft penetrates through the cup body and is driven to rotate by a motor; the crushing blade comprises a wing root and a blade wing; the blade wing comprises a crushing wing and an extension wing positioned at the tail end of the crushingwing; the extension wing extends backwards along the rotation direction of the blade wing; a cutting edge is formed on the outer side of the blade wing blade; a cutting point is formed on the tail endof the extension wing; and the radius from at least one point in the middle of cutting edge to the center of the wing root is the maximum radius from the cutting edge to the center of the wing root,and the radius from the cutting point to the center of the wing root is no larger than the maximum radius.. According to the machine, the extension wing is arranged, the space formed by the crushing wing can be occupied after the crushing blade performs cutting and rotating, so that the crushing blade is prevented from generating vortex, the kinetic energy release of food materials after being through the crushing blade is relieved, the noise pollution caused by the vortex generation is reduced, and at the same time, the crushing performance is improved.

The invention relates to a push type riverbed sediment sampling device and belongs to the technical field of water conservancy measurement. The sampling device comprises an operation platform, a feeler lever, a sampler shell and a sampler, wherein the operation platform is installed on a surveying ship; the upper end of the feeler lever is connected with the operation platform, while the lower end thereof is connected with the upper end face of the sampler shell; the sampler is installed in the sampler shell; the operation platform enables the sampler to fall to a sampling position for sampling and lifts the sampler to the surveying ship for completing the sampling work through the feeler lever; the sampler shell is composed of a rectangular shell, a wedge-shaped block welded at the lower end of the rectangular shell and two wing plates; two inclined surfaces of the wedge-shaped block are located on two side faces of the rectangular shell; the two wing plates are located on the front and back of the rectangular shell; the sampler is installed in the rectangular shell; the front end of the sampler faces the front of the rectangular shell; a through hole matched with the front end of the sampler is formed in the front wall of the rectangular shell. The push type riverbed sediment sampling device can sample riverbed sediments in a safe, reliable, high-fidelity and high-precision manner.

The invention relates to the air compression, fluid conveying and the evacuation fields, in particular to a rotary compression machine with a translational piston; the machine head device of the translational rotary compression device comprises a cylinder body, a crankshaft, a transmission wheel, a sliding plate, a translational piston; the transmission wheel is arranged on one end of the crankshaft; the middle part of the crankshaft is provided with an eccentric rotor; the rotary center of the eccentric rotor is concentric with the cylinder body; the translational piston is arranged on the eccentric rotor and is movably connected with the eccentric rotor; the lateral surface of the translational piston is tangent with the inner lateral surface of the cylinder body, so as to form a crescent-shaped operation cavity; one end of the sliding plate is hinged on the inner wall of the cylinder body; a sliding plate groove is arranged on the translational piston in the radial direction; the other end of the sliding plate is extended to the sliding plate groove through the operation cavity; the sliding plate is movably connected with the sliding plate groove the operation cavity is dividedinto an expansion cavity and a compression cavity by the sliding plate; a suction port and a discharge port are respectively on the expansion cavity and the compression cavity; The rotary compressionmachine with a translational piston has the advantages of simple structure and high operation efficiency.

The invention discloses a swash plate type hydraulic axial plunger pump / motor heavy-load sliding shoe pair friction-reducing disc in order to overcome technical defects of sliding shoe pairs. Slidingshoes slide freely on the outer surface of a rotating disc on the top of a friction-reducing disc body, or the sliding shoes are fixedly connected with the rotating disc; under driving of a friction force between the sliding shoes and the surface of the rotating disc, due to the support action of bottom balls and side balls, the rotating disc and an intermediate body rotate together with the sliding shoes, so that sliding movement between the sliding shoes in a sliding shoe pair and a swash plate surface is partially or completely converted into rolling movement between the side balls and thebottom balls, the relative movement speed between the sliding shoes and the rotating disc is also decreased at the same time, and thus the purpose of reducing the friction power loss of the sliding shoe pair is achieved. The friction-reducing disc is completely immersed in hydraulic oil during work for thorough lubrication and cooling, and since the bearing form of combined action of the balls andstatic pressure support is adopted, the friction-reducing disc can obtain a long service life through reasonable design and is also convenient to maintain and replace when worn.

The invention discloses a rotary type compressor which comprises a shell (1), a cylinder body (2), a rotor (3), a sliding plate (4) and an exhaust valve (7), wherein an air suction hole (6) and an exhaust hole (8) are arranged on the shell (1), rotating central axes of the cylinder body (2) and the rotor (3) are offset into a state that the outer circumferential surface of the rotor (3) is tangential with the inner circumferential surface of the cylinder body (2), the head of the sliding plate (4) is embedded into a cylinder of the cylinder body (2), the main body of the sliding plate (4) extends into a sliding plate groove of the rotor (3), the exhaust valve (7) is arranged on the outer circumference of the rotor (3) and the front of the rotating direction of the sliding plate (4), a cylinder body air inlet (12) which is positioned at the rear of the rotating direction of the sliding plate (4) is arranged on the cylinder body (2), and the sliding plate (4) and an internally tangent point are used for dividing crescent working volume between the inner circumferential surface of the cylinder body (2) and the outer circumferential surface of the rotor (3) into an air inlet cavity and an exhaust cavity.

The invention provides a high-precision cutting tool alignment method for machining a large-caliber non-spherical-surface optical element by atmospheric plasma. The cutting tool alignment method for machining the large-caliber non-spherical-surface optical element by the atmospheric plasma comprises the following steps: firstly, adjusting a side edge of the optical element to be parallel to a horizontal coordinate axis; then leveling the surface of the optical element along the Z direction of a symmetric coordinate position of a central axis; finally, determining a central coordinate of the optical element and positions of a plasma torch center and an optical element center through two-edge cutting tool alignment, so as to finish cutting tool alignment. By comprehensively considering factors in two aspects of cutting tool alignment efficiency and cutting tool alignment precision, a traditional fixed type thimble head is replaced with a high-precision triggering measuring head. By adopting the cutting tool alignment method provided by the invention, influences caused by manual factors including experience of operators, an observation angle and the like are reduced; the cutting tool alignment precision and assembling and adjustment quality of the optical element are extremely improved; the operation convenience and the cutting tool alignment efficiency are improved, and the machining quality and the technological stability are easy to improve.

The new type compressor is constituted by a cylinder assembly, which consists of driving shaft, cylinder, front and back caps, servo ring and isolating blade, installed in the casing cavity. It features the concentric driving shaft steps, the servo ring inside the cylinder, the eccentric driving shaft and the silating blade with outer end hinged with the servo ring and inner end inserted inside the straight runner. During the rotation of the driving shaft, the isolating blade rotates the servo ring to suck in and extrude out cold medium. The compressor has no eccentric vibration, and thus good high speed performance.

The invention relates to a device for supplying power to a moving circuit by contact, which includes a coil lead-out structure, a brush, a rotating shaft and lead wires. rotation; the lead wire is connected with the brush, and also includes a conductive wheel and a driving structure; there is a contact surface between the conductive wheel and the coil lead-out structure, and the driving structure drives the conductive wheel to rotate to realize the The conductive wheel is in rolling contact with the coil lead-out structure at the contact surface; the end of the brush is located at the axis of the side of the conductive wheel, and is in sliding contact with the side of the conductive wheel. The invention can be used not only for DC motors, but also for electric excitation synchronous motors or winding asynchronous motors or double-fed asynchronous motors; it can eliminate the friction between the brushes and commutators or slip rings, and improve device or slip ring life.