375results about How to "Reduce internal friction" patented technology

A portable linear generator for use as a battery charging element inside a portable powered device using multiple permanent magnets arranged linearly with each magnet constrained to repel each nearest magnet, one of the magnets fixed at one or each end of the array, one or more of the magnets free to move along the axis of the array, a guide rod extending through the magnets having a low friction or low friction and diamagnetic surface, and coaxially wound coil or coils of magnet wire arranged to electrically connect outside the device.

An injection molding machine includes an injection molding cylinder with a material supply at one end and an injection nozzle at the other end and a material conveyance unit attached to a drive and movable in the injection molding cylinder. The injection molding machine also includes a vibration element for inducing a flow of melt within the injection molding cylinder for homogenizing the melt.

The invention relates to a preparation method of a water-soluble polymer dispersion. The water-soluble monomer is dispersed in a solution polymerization system containing a dispersant, an initiator and a metal ion scavenger to perform polymerization and obtain the water-soluble polymer dispersion, wherein the dispersant is a composite dispersant system and contains at least one kind of water-insoluble inorganic macroparticles and at least one water-soluble polymer dispersant. The invention utilizes the composite dispersant system in which the water-insoluble inorganic macroparticles are matched with the polymer dispersant to form dispersion coating mechanism so as to reduce the concentration of high molecular polymer in continuous phase and ensure that the rolling friction and rigid impact are mainly adopted between the polymer molecule chain and the macroparticles. Therefore, the viscosity of the dispersion is effectively reduced while the molecular weight of polyacrylamide polymer in the dispersion is not reduced, and the water-soluble polymer dispersion with high concentration, good solubility, uniform dispersion, high efficiency and full water-solubility can be prepared.

A toroidal rotary damper apparatus includes a housing having a toroidal inner housing surface and a piston moveable in the housing having a curved outer peripheral piston surface in engagement with the inner housing surface. A fluid barrier is attached to the housing and located in the housing interior. A flow control passageway defined by either the piston or the fluid barrier controls passage of damper fluid when there is relative rotational movement between the piston and the housing to dampen the forces causing relative rotational movement.

An internal combustion rotary engine, self cooled, totally concentric and symmetric, dynamically variable compression ratio, capable of developing multiple Otto cycles in each rotation, by means using modules, composed mainly by a solenoid gate valve and three chambers operating at the rotor periphery, producing at low RPM, torsion of value near close at theoretical limit. High power/weight ratio, which increases substantially when number of modules increase, without drive shaft length increase; plus reduced internal friction, is a truly saver fuel machine; with volumetric asymmetry ratio between expansion and compression chambers, and that compression chambers working at beginning of the cycle at normal atmospheric pressure, it gives a fast rise pressure peak, because of the almost wedged form of that chambers. Proper for many types of combustion and class of fuels, including hydrogen, liquefied propane gas and efficient use of air compressed as external energy supply. Excels in aircraft use.

The invention relates to a technology for laying train rails, in particular to a passenger special line rubber tie plate. According to the technical proposal provided by the invention, the rubber tie plate comprises 100 portions of styrene-butadiene rubber, 4 to 8 portions of zinc oxide, 0.5 to 1.5 portions of stearic acid, 0.8 to 1.5 portions of accelerant TMTD, 0.5 to 1.5 portions of accelerant CZ, 0.5 to 1.5 portions of accelerant DTDM, 1.0 to 3.0 portions of coupling agent Si69, 30 to 50 portions of semi-reinforcing carbon black, 50 to 70 portions of nano kaolin, 10 to 20 portions of nano calcium carbonate, 1 to 1.5 portions of antiaging agent 4010NA, 1 to 2 portions of antiaging agent RD, 0.5 to 1.5 portions of micro-crystalline wax and 0.3 to 1.5 portions of sulfur; and the unit is weight portion. The rubber tie plate makes the performance of the rubber tie plate reach the technical requirements of the passenger special line rubber tie plate by using high-performance novel materials, namely the nano kaolin and the nano calcium carbonate in the compositions, and has high insulativity, high ageing resistance and low ratio of dynamic stiffness to static stiffness of products.

The invention discloses an ultrasonic-wave-based medium-high carbon steel fine blanking forming device. According to the ultrasonic-wave-based medium-high carbon steel fine blanking forming device, on one hand, an ultrasonic generation system is added, dislocation density of materials is increased and internal frictional force of the materials is reduced during a forming process due to the fact that ultrasonic waves are transmitted to a die and blank, and the resistance to deformation of a to-be-machined machine part is remarkably reduced under a coupling function of alternating stress fields generated through the ultrasonic waves and stress fields generated through elasticoplastic deformation and on the other hand, a temperature feedback adjusting system is added and a centralized control mode through a microcomputer control system is adopted to keep a best vibrational frequency of the ultrasonic waves during a fine blanking process and improve the forming efficiency and accuracy. The ultrasonic-wave-based medium-high carbon steel fine blanking forming device has the advantages of being high in machining and forming accuracy and low in noise, enabling the service life of a stamping device to be long and being applicable for fine blanking and forming of various medium-high carbon steel materials.

The invention discloses a kind of cement-water glass grouting material, and belongs to the technical field of strengthening of soft stratum in underground engineering and anti-seepage water-plugging grouting. The material comprises two uniformly mixed components of a liquid A and a liquid B, wherein the A liquid is water glass with a modulus in a range of 2.6-3.2 and a baume degree of 20-45 Be', and the liquid B is cement slurry which includes cement, a retarder, a stabilizer and a water reducing agent, wherein the mixing amount of the retarder is 0.5-3% of the cement mass, the mixing amount of the stabilizer is 0.1-0.5% of the cement mass, and the mixing amount of the water reducing agent is 0.1-1% of the cement mass. When the material is used, the A liquid and the B liquid are uniformlymixed according to a volume ratio of 0.8:1-1.2:1 for obtaining the cement-water glass grouting material. The material has the advantages of good stability of slurry, good water retaining property, good fluidity, controllable coagulation time, high strength of stone body, good durability, and good water dissolution resistance and erosion resistance.

The invention belongs to the technical field of foaming agents, and particularly relates to a foaming agent for a shield machine. In order to solve the problems that various properties including the uniformity, the stability, the lubricating properties, the permeability and the like of foams of a domestic foaming agent at current cannot completely meet requirements for foams in shield tunneling, and the adaptability of the foaming agent has certain limit, the invention provides the foaming agent for the shield machine, and the foaming agent is prepared from sodium dodecylsulfate, sodium alcohol ether sulphate, sodium alpha-olefin sulfonate, modified polyethoxylated silicone, and water in a certain proportion. According to the foaming agent disclosed by the invention, the working performance of soil is improved, so that the soil forms plastic deformation to provide uniform and controllable support pressure, and a working surface is stable; leakage is reduced, the sealing properties of the working surface are strengthened, internal frictional force is reduced, abrasion of the soil on cutter heads, conveyors and conveyer belts is reduced, and the energy consumption is reduced; the viscosity of a soil mass is reduced, and generation of plugging is avoided; and the foaming agent has the effect of restraining dust during construction of rock and soil tunnels and mines.

The invention discloses a photo-communication secondary module automatic coupling device and method. An X axis, a Y axis and a Z axis which can move in the three three-dimensional directions are set so that during coupling working, the relative positions of an element in an upper clamp and an element in a lower clamp can be automatically corrected accurately, the X axis, the Y axis and the Z axis move in the direction in which light power becomes higher, finally after light power reaches the maximum value, laser welding is carried out on an optical fiber standard connector mechanism tube core and a laser diode, a photo-communication secondary module is formed, and accordingly quick, efficient and accurate automatic coupling working is achieved.

A hydraulic transmission petroleum mining pumping unit, it compose of foundation, front bracket, rear bracket, up pull-rod and diagonal pull-rod that are connected by hinge, hydraulic transmission assembly is set between front and rear bracket which compose of slide-block type variable and reversing gear hydraulic pump of combinational flat valve, slide-block type plate transmission low-speed torque hydraulic motor, oil-box and accessories group of pipe line, that is the transmission system operates opening pump motor to volume velocity modulation and reversing loop, and combine by hydraulic transmission wheel connecting with transmission pieces of mining pump, control by machined, electric and hydraulic adjustable system to work continuously and reciprocally with the needful stroke and stroke time.

The invention discloses a fullerene ethylenediamine nitrate as well as a preparation method and an application thereof. Firstly, fullerene C60 and ethylenediamine are taken as raw materials, fullerene ethylenediamine is prepared by the aid of a nucleophilic addition principle, and the fullerene ethylenediamine reacts with nitric acid so that the fullerene ethylenediamine nitrate is obtained. The fullerene ethylenediamine nitrate has the advantages of oxidant ammonium nitrate (AN), can avoid disadvantages of hygroscopicity, and crystal transformation of AN, and can be used as an oxidant to be applied in a novel solid rocket propellant or explosive.

The invention provides an equal channel angular extrusion device of an ultrasonic vibration female die. The equal channel angular extrusion device is composed of an upper template and a lower template. A threaded hole in the upper end of the upper template is connected with a hydraulic plunger on a hydraulic machine. The upper end of a cushion block is connected with the upper template. The lower end of the cushion block is connected with a male die. The male die is fixed in a blocking ring. The upper end of the blocking ring is fixedly connected with the cushion block. The upper end of a guide sleeve is fixedly connected with the upper template. The lower end of the guide sleeve is connected with the upper end of a guide column. The lower end of the guide column is fixedly connected with the lower template. The lower end of the female die is fixed to the lower template. The side face of the female die is fixed through a split stress ring. An ultrasonic vibration device is fixedly connected to the side face of the female die. High-strength ultrasonic waves are input into the female die, high-frequency periodic vibration displacement is generated on the surface of the female die, grain uniformizing and refining of an extrusion piece are improved, and the problems that an equal channel angular extrusion die is nonuniform in grain refining, and cracks exist on the extrusion piece are solved effectively.

The invention provides a preparation method for a superfine hard alloy cutter blank with a preformed cutter groove. The preparation method is characterized by comprising the following steps: step 1, performing wet mixing and ball milling on superfine WC, superfine Co, superfine VC and Cr3C2, and then performing uniform mixing to obtain a superfine mixture of which all the components are uniform; step 2, adding an adhesive into a vacuum kneading machine, performing kneading till the superfine mixture and the adhesive are uniformly mixed, pelletizing the superfine mixture doped with the adhesive, heating the pelletized material in an injection molding machine till the pelletized material enters a molten state, injecting the molten material into a mold cavity by an injection molding mode, and dissolving and removing the adhesive in a superfine hard alloy soft blank in water; and step 3, performing sintering at 1340-1420 DEG C in a low-pressure sintering furnace, and performing argon gas pressurization at 1-10 MPa to prepare the superfine hard alloy cutter blank with the preformed cutter groove. When the superfine hard alloy cutter blank with the preformed cutter groove is produced by adopting the preparation method provided by the invention, the grinding amount during cutter production can be greatly reduced, the cutter production efficiency can be greatly improved, and the waste of tungsten resources can be reduced.

Provided is an equal channel angular pressing device of an ultrasonic vibration male die. The upper ends of pressure columns of the device are fixed to an upper die plate. A threaded hole in the upper end of the upper die plate is connected with a hydraulic plunger on a hydraulic machine. The upper ends of guide sleeves are fixedly connected with the upper die plate. The lower ends of the guide sleeves are connected with guide columns. The lower ends of the guide columns are fixedly connected with a lower die plate. The side face of a female die is fixed through a stress ring. An ultrasonic vibration device is fixedly connected between the upper end of the male die and the upper die plate. According to the device, high-intensity ultrasonic waves are input into the male die, high-frequency periodic vibration displacement is generated on the surface of the male die, uniformity of extruded elements is improved, crystal particles are refined, and the problems that according to an equal channel angular pressing die, the crystal particles are not uniform in refining and the extruded elements have cracks are solved.

A balanced rotary cycling machine suitable for use as an internal combustion engine, compressed gas or steam engine, compressor or pump is disclosed herein. The rotor assembly consists of four articulating pistons where the opposite pistons are inter-linked with each other by pivoted rods comprising a parallelogram mechanism and therefore eliminating a need for pivots between pistons. The rotor assembly rotates inside or outside of a circular or non-circular stator depending on the configuration chosen. A variety of mechanisms for shape deformation of four piston assembly during its rotating cycle is also disclosed herein, as well as detailed descriptions of preferred embodiments, including a four cycle internal combustion engine with circular stator, marine engine with polymer parts and a four cycle automobile rotary engine with conventional oil pan. In addition, a method of operation of external rotary combustion engine, employing a high-pressure compressor and an external combustion chamber, is disclosed. This invention also teaches a novel lubrication system for rotary engine providing low emissions. The engine has few moving parts, simplified circular or semi-circular stator shape and utilizes simple and effective sealing techniques. It is fully balanced, has very low friction and heat losses and can employ a pre-designed configuration of the combustion chamber for a desired compression ratio and power output.