62results about How to "Eliminate frictional resistance" patented technology

The invention provides a vacuum pipeline docking technology and a high-speed permanent maglev train system. With the station-training docking technology, the door closing time of the maglev train inside the vacuum pipeline can be shortened for scores of seconds, so the rapid on-off can be realized. When a telescopic door and a separation cabin door are withdrawn to be close to the wall of the vacuum pipeline, the high-speed pass of the tray is free from being influenced. The telescopic door is locked by a permanent magnet suction disc, and the locking force is free from being controlled by the electric power, so the gas leakage and pressure relief caused by the invalid locking for sudden power down can be prevented. The energy can be remarkably saved, the energy can be saved by more than 97 percent compared with that of high-speed track train, and the energy can be saved by more than 99 percent compared with that of the airplane.

A pneumatically static balancer for a machine tool counterbalances or lightens a gravitational load generated by an own weight of a vertically moving driven member. The pneumatically static balancer includes a pneumatic cylinder supporting the driven member and allowed to move vertically, a pneumatically static bearing having a piston inserted into the pneumatic cylinder, the pneumatic static bearing being formed by feeding compressed air, which is in an interior of the pneumatic cylinder, into a small clearance formed between the pneumatic cylinder and the piston, a cylinder rod connected to an upper end of the piston and a saddle supporting a leading end portion of the cylinder rod.

The invention discloses a vacuum-thrust-vector measurement system capable of adjusting the rocket-motor swinging direction in real time. The vacuum-thrust-vector measurement system comprises a rocket-motor installing platform, six one-direction force measurement and movement control assemblies, a base, a measurement and control cable and a computer measurement and control system. The one-direction force measurement and movement control assemblies are composed of lower hinging boxes, lower spherical hinges, servo motors, cylinders, lead-screw ejector rod mechanisms, force measurement sensors, upper spherical hinges and upper hinging boxes. The lead-screw ejector rod mechanisms are composed of lead screws and ejector rods. The servo motors are controlled by the computer measurement and control system to rotate, and rotating movement of the servo motors is converted into linear movement of the ejector rods through the lead screws to further drive the rocket-motor installing platform to move. One-direction force measured by the six force measurement sensors is synthesized through the computer measurement and control system to obtain the thrust vector of a rocket motor. The servo motors are vacuum motors, the force measurement sensors are of open structures, and swinging control and thrust-vector measurement can be carried out in a vacuum.

The invention relates to the technical field of electronic information, and discloses an electronic information transmitting antenna with a uniform winding function. The antenna comprises a cable box.A winding shaft is rotatably inserted into the lower part of the cable box. A rotating shaft is rotatably connected with the inner cavity of the cable box and is positioned above the winding shaft. Adriven gear is arranged on the left portion of the rotating shaft. The right side of the driven gear is fixedly connected with a guide cylinder connected with the rotating shaft in a sleeving mode. Aguide groove is formed in the guide cylinder. A bearing is fixedly installed on the left wall of the cable box. A guide pipe is fixedly connected with the inner cavity of the bearing. The left portion of the guide pipe is movably sleeved by a sliding sleeve. According to the electronic information transmitting antenna with the uniform winding function, the winding shaft drives the guide cylinderto rotate; the guide cylinder enables a sliding block to reciprocate left and right through the guide groove; the guide pipe and the sliding sleeve are arranged in a matched mode, and bristles with elastic pieces are arranged on the guide pipe in a matched mode; and the effects of evenly winding, protecting a cable against abrasion and conveniently keeping large cleaning strength on a cable are achieved.

The invention relates to a rolling type centrifugal casting machine. A first supporting seat and a second supporting seat which are used for supporting shafts are oppositely arranged on a base; a rotating shaft which extends horizontally is arranged on each of the two supporting seats; the two rotating shafts are parallel, and the heights of the two rotating shafts in the horizontal position are same; the rotating shafts are supported on the supporting seats through bearings; rollers for holding a cylinder casting mold for rotating are respectively installed at two extending ends of the rotating shaft; a driven wheel for receiving power transmission is installed at one end of the rotating shaft on the first supporting seat so as to enable the roller on the first supporting seat to be an active roller, and the roller on the second supporting seat to be a driven roller; and the spacing distance between the active roller and the driven roller is greater than the radius of the cylinder casting mold and is less than the diameter of the cylinder casting mold, thereby forming a raceway for the cylinder casting mold to rotate. The invention can enable the cylinder casting mold of which the axial length is greater than 400mm to be held by the rollers on the two supporting seats for rotating, overcomes the rotary swing of a cantilever type casting mold, realizes the purpose of carrying out centrifugal casting by using a longer cylinder casting mold, improves the production efficiency, has simple structure, and reduces the manufacturing cost of the centrifugal casting machine.

The invention discloses a carton correction pressing and pasting device. The carton correction pressing and pasting device comprises a rack, a paper conveying shaft, paper conveying wheels fixedly connected to the paper conveying shaft, paper conveying belts surrounding the paper conveying wheels in a covering mode, and paper alignment devices arranged on the outer sides of the paper conveying belts. The paper alignment devices comprise paper alignment wheels which can rotate and paper aligning belts which surround the paper aligning wheels in a covering mode. The paper conveying wheels and the corresponding paper conveying belts and paper alignment devices are respectively arranged in two sets. The two sets of paper conveying wheels and the corresponding paper conveying belts and paper conveying devices are symmetrically arranged. A row of paper pressing wheels are arranged at the positions, above the corresponding paper conveying belt, of the inner side of each paper alignment device, the paper pressing wheels are in the shape of circular truncated cones, the edges of the top faces of the paper pressing wheels are round corners, the paper pressing wheels can be arranged on a paper pressing wheel fixing plate in a rotating mode, the paper pressing wheel fixing plate is fixedly connected to the rack, and the distance between the paper pressing wheel fixing plate and the paper conveying belts can be adjusted. Folded cartons can be transversely corrected and aligned, paper faces are smooth after correction, and the carton correction pressing and pasting device is widely applied to carton forming machines.

The invention relates to multifunctional equipment for simulating underwater soil body cutting and rake tooth optimization. The multifunctional equipment comprises a test soil tank and a soil tank cover plate which constitute a sealed space, a spring loading device arranged in the test soil tank, a rake tooth fixing device arranged on the spring loading device, a rake tooth arranged on the rake tooth fixing device as well as a pore water evaporation observation device arranged on the soil tank cover plate, wherein the test soil tank is sequentially filled with a test soil body and a sealing water body, the mounting angle of the rake tooth is adjusted by the rake tooth fixing device, the test soil body is cut under the action of the spring loading device, and the evaporation degree of the test soil body during cutting is observed through the pore water evaporation observation device. Compared with the prior art, the multifunctional equipment is simple in structure, easy to transform, high in reliability, wide in applicability and low in cost; an underwater soil body cutting process and a cutting resistance formation mechanism can be reproduced directly; quantitative tests of the lowest traction power required by underwater soil body cutting, the optimal advancing speed of the rake tooth and pore water evaporation can be realized easily.

The invention discloses a linear motion platform with an ultrasonic-assisted friction overcoming function. The linear motion platform mainly comprises a workbench, a piezoelectric stack, a flexible hinge set, an auxiliary mechanism, a driver and other parts. The auxiliary mechanism is composed of four identical plates which are in threaded connection with slide blocks, and the plates are connectedwith the workbench through the flexible hinge set in a threaded mode. The driver applies driving force to the workbench, so that flexible hinges are driven to generate elastic deformation, and directional displacement of the whole motion platform is achieved. The piezoelectric stack is installed between the two plates located on a same-side guide rail through studs, piezoelectric ceramics apply mechanical stress to the slide blocks, static friction force between the slide blocks and the guide rails is overcome, the situation that the accelerated speed is suddenly changed immediately due to friction state switching is prevented, the shaking phenomenon is eliminated, and positioning precision is improved.

The invention discloses a liquid-level variable and gear variable combined high-precision measuring and metering method and a device. The device comprises three parts of a hydraulic container or cylinder liquid-level variable precise measuring and metering device, a gear variable combiner and an electronic information control device. The bottom of the large-aperture hydraulic container or cylinder provided with a piston is communicated with a small-aperture measurement pipe. The gear variable combiner is as follows: a plurality of meshed large gears and small gears are installed in a gearbox;and the gear perimeter transmission ratio is the magnifying power and the reducing power of the gear variable count. The electronic information control device comprises a computer, a controller, an infrared electronic measurement ruler and a stepping motor which are mutually and electrically connected. An output gear rack or a measurement head of the gear variable combiner and a piston connectingrod of the hydraulic container or cylinder are tightly matched with an object to be measured so that the object to be measured is located and measured accurately. The device disclosed by the invention has the advantages of high measuring and metering precision and accurate zero point location and can be widely applicable in the fields, such as numerical control machines, sighting devices, preciseinstruments, balanced pressures, standard length weights and the like. A novel measuring and metering instrument and a tool for agricultural and industrial production, national defence construction and scientific research are provided.

The invention belongs to the technical field of medical care instruments, and particularly relates to a practical medical label taking box. The practical medical label taking box comprises a box body,a drawing-taking opening is formed in the box body, a fixing rod is arranged in the box body, the length direction of the fixing rod is perpendicular to the orientation of the drawing-taking opening,the fixing rod is sleeved with a hollow rotating rod, the rotating rod is rotationally connected with the outer wall of the fixing rod through the inner wall of the rotating rod, an adjusting assembly for fixing a label paper roll is arranged on the rotating rod, a paper pressing assembly is further arranged in the box body, the paper pressing assembly comprises a telescopic rod, a pressing blockand a compression spring, one end of the telescopic rod is connected with the side wall, parallel to the fixing rod, in the box body, the other end of the telescopic rod points to the rotating rod, the end of the telescopic rod pointing to the rotating rod is connected with the pressing block, the compression spring is arranged outside the telescopic rod in a sleeving mode, one end of the compression spring is connected with the inner wall of the box body, and the other end of the compression spring is connected with the pressing block. According to the practical medical label taking box, theproblem that the label paper roll is loose is solved, and meanwhile, the effect of facilitating drawing and taking is realized.

The invention discloses an electric energy multiplication device named an 'electric multiplication motor'. The electric energy multiplication device comprises an electrically-driven unit, a power-assisted flywheel, an electricity generation unit, a control system and an electric energy conversion device and is characterized in that a motor with low mass is associated with a permanent-magnet generator with high mass, the electrically-driven unit is electrified to drive the flywheel and the electric generation unit to run, and the stator of the electric generation unit is enabled to output electric energy; when the electrically-driven unit is powered off, the rotor of the electrically-driven unit and the rotor of the electric generation unit are capably of continuing to run under the influence of the rotational inertia of the flywheel and a power-assisted mechanism, the stator of the electrically-driven unit and the stator of the electric generation unit are enabled to output electric energy, the electric energy output by the stator of the electrically-driven unit is converted to a self-contained power source by the electric energy conversion device; the electric generation unit is capable of continuously outputting electric energy by periodic switch conversion, thus much electric energy output can be obtained from low electric energy investment. The electric energy multiplication device disclosed by the invention has the functions of charging, electric multiplicatig on and discharging, as well as is capable of being used for electric multiplication and accumulation for families, and capable of being used as a mobile power supply.

The invention discloses a hydraulic resistance reducing oscillator for oriented oil and gas field well drilling. The hydraulic resistance reducing oscillator comprises a vibrating mechanism, a power assembly and a bottom assembly. According to the hydraulic resistance reducing oscillator, a telescopic isolating ring capable of floating in a telescopic manner is mounted between the periphery of thelower end of a vibrating shaft and the inner ring end face of an outer shell, and a guiding ring with a conical ring body structure with a larger upper part and a smaller lower part is mounted at thelower end of the vibrating shaft, so that the overflowing path of drilling fluid from the periphery of the vibrating shaft is sealed, the overflowing quantity of the drilling fluid from a drainage cavity in the lower end of the vibrating shaft is reduced, the drilling fluid quantity in a power impact ring cavity between the telescopic isolating ring and the guiding ring is greatly increased, andthe vibrating sensitivity of the vibrating shaft is improved.

The invention discloses a train steering mechanism and a monorail train system with the same. The train steering mechanism comprises a bogie, a wheel cover, a travelling wheel and a conductive piece. The bogie is connected with a train; a mounting part is arranged on the bogie; an electromagnetic body is arranged in the wheel cover arranged on the mounting part; an opening is formed in the lower portion of the wheel cover; the travelling wheel is in a spherical shape and arranged in the wheel cover, and at least a part of the travelling wheel stretches out of the opening; a magnetic metal material is arranged in the traveling wheel; the conductive piece is connected with the wheel cover so as to energize the electromagnetic body and enable the electromagnetic body to produce a magnetic field; and the traveling wheel moves according to the strength and distribution direction of the magnetic field produced by the electromagnetic body. According to the train steering mechanism of the embodiment of the invention, the steering free degree of the train steering mechanism is improved, the steering flexibility of the train in the driving process is guaranteed, frictional resistance between the traveling wheel and the wheel cover is eliminated, traveling wheel heating caused in the process of electromagnetic induction is eliminated, and improving of monorail train performance is facilitated.

The invention, which relates to a model test of a lifting force of a gate, discloses a model test method for testing influence of sediments located in front of a gate on a lifting force of the gate. The invention provides a similarity criterion of the sediments located in front of the gate and a method which is used to guarantee the similarity of the sediments located in front of the gate in the lifting force model test so as to guarantee the similarity between tested model lifting force and the real lifting force. The invention also provides the method which is used to correct the sediment similarity when the sediments located front the gate do not satisfy the similarity criterion. In addition, the test method of eliminating dissimilarity of the gate walking friction resistance is also provided.

The invention relates to a controllable vehicle fuel-saving semi axle, characterized in that the invention uses inertia theory, arranges inside arc magnetic drawing claw engaged with a Z-type drawing rod with a positioning hole at middle, two symmetry arms of the drawing rod are limited by the axles on two arc drawing claws, the rotation axle of the drawing claw is fixed on a frame support, the clutch frame has a chamber containing a clutch one-way disc whose two sides are arranged with space without spiky, and rollers at angle end, to engage with the clutch, driving tooth and driven tooth, therefore, the invention can on-time control slide and brake, and save fuel, with simple structure, easy operation or the like.

The invention discloses an energy-saving environment-friendly engine. The serious internal resistance phenomenon of a traditional crankshaft engine is eliminated, and meanwhile high-temperature heat energy generated by violent combustion of fuel in a combustion chamber is utilized for generating ultra-supercritical superstrong steam power at the temperature of 600 DEG C or above. The engine is mainly composed of an impeller, a fuel gas direct injection cylinder (16), an ultra-supercritical steam injection cylinder (18), a high temperature resisting thermal radiation diversion isolating sheet or high temperature resisting flame jet flow separation plate, a two-gas combined main heating and stress applying chamber and the like. Due to the fact that the interior of the ultra-supercritical steam injection cylinder of the engine can be heated by a wide and long high-temperature thermal radiation sheet above the fuel gas direct injection cylinder, or high-temperature flames ranging from 1,000 DEG C to 2,000 DEG C below the high temperature flame jet separation plate are directly jet into the ultra-supercritical steam injection cylinder of the engine for heating, especially huge ultra-supercritical steam power larger than that of traditional crankshaft piston type engines by 10-60 times is generated, and great and large-proportion energy saving and great and large-proportion power lifting better than those of all the traditional crankshaft piston type engines are thoroughly achieved.

The invention relates to a method for twisting a twisted frame type agitating blade and a die thereof, which belongs to the field of die. The die comprises a guiding axis, a die body and a clamping plate; wherein the guiding axis is installed at the upper end of the die body, the clamping plate is installed at the lower end of the die body, and grooves are formed at the two ends of the clamping plate. The guiding axis can rotate freely in the die body, and the clamping plate is fixed on the die body. When in use, the two vertical edges of an agitating blade workblank are respectively clipped in the grooves at the two ends of the clamping plate, the guiding axis penetrates the hole on the agitating blade head, the agitating blade head is clamped through a spanner, and the spanner is twisted until the two vertical edges of the agitating blade become spiral and tightly winded on the drum-shaped cylindrical surface of the die body. The die has the advantages that the structure is simple, the die is easy to manufacture, the frictional resistance of the twisted blade during the twisting process can be eliminated, the blade shape can be normative, and tear during twisting can be reduced.

The invention relates to a kind of parallel body-connected series centrifugal pump. It belongs to a water pump. It includes pump shell, pump supporting frame, pump shaft cover-mounted on the pump supporting frame and connected with power device and bearing cover-mounted on the pump shaft and matched with pump supporting frame. Besides, it also includes the components of water inlet, water intake section, water intake cavity, water outlet, water discharge section, water discharge cavity and blade wheel, etc. Said invention also provides the concrete structure of the above-mentioned every component and their connection method.

The invention discloses a secondary air pump driven by a brushless motor. The secondary air pump comprises a pump shell, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are fixed on the upper end part and the lower end part of the pump shell respectively, thus the pump shell forms a closed space, the pump shell is sequentially divided into an impeller chamber, a brushless motor bearing chamber and a controller mounting chamber from top to bottom, an isolation subplate is arranged between the brushless motor bearing chamber and the controller mountingchamber, an air inlet pipe is arranged on the front end cover, the front end cover is provided with a raised annular air flow channel, the annular air flow channel is connected with the air inlet pipeline, the impeller chamber is positioned directly below the annular air flow channel, an impeller body is arranged in the impeller chamber, and a brushless motor structure is arranged in a brushless motor bearing chamber. The air pump has compact structure and reasonable design, can realize the effect of bearing the brushless motor, realizes the effects of low noise, high power density and elimination of friction resistance of an electric brush, has good sealing effect, is convenient to assemble and has good application prospect.

The invention relates to a blower. The blower comprises a base; a housing disposed on the upper side of the base and having an air inlet and an air outlet formed therein; a fan disposed inside the housing; a rotating disk connected to the housing and rotatably disposed on an upper side of the base; a motor for generating power for rotating the rotating disk; and a bearing which is disposed between the rotating disk and the base, is fixed to the rotating disk, and is movably supported by the base. As the bearing disposed on the rotating disk is supported on the base and rotates, the rotation of the blower is stably supported by the base and the bearing.