67results about How to "Won't change shape" patented technology

Using geometric characteristics of outer margin curves of two light spots at different distances along direction of beam transmission, the disclosed method obtains divergence angle of laser. Through rotational scanning detection, concentric placed two light detectors perpendicular to each other obtain outer margin curves. Multiple optical fibers are distributed on the said light detector evenly. The disclosed device is composed of drive power supply, cooling water platform, cooling water circulation system, 4D traveling platform, electrical motor set, drive, data acquisition module, and PC etc. The light-receiving module includes light detectors. The light-receiving module, data acquisition module, and PC are connected electrically. The invention solves issue of test error caused by regarding face radiation of area array laser as spot light source so as to avoid damaging and burning detector caused by too large power of laser. Advantages are: accurate and reliable.

An illumination system has a plurality of light emitters (R, G, B) and a light- collimator (1) for collimating light emitted by the light emitters. The light-collimator is arranged around a longitudinal axis (25) of the illumination system. A light-exit window (5) of the light-collimator at a side facing away from the light-emitters is provided with a translucent cover plate (11) provided with a switchable optical element (15) based on electrowetting. The light-exit window of the light-collimator or the translucent cover plate is provided with a light-dispersing structure (7) for broadening an angular distribution of the light emitted by the illumination system. The optical element (15) being switchable in a mode of operation reducing the effect of the light-dispersing structure (7). Preferably, the effect of the light-dispersing structure is substantially counteracted when the switchable optical element operates in the mode of operation reducing the effect of the light-dispersing structure.

The invention discloses a river bed infiltration water purification technology used for repairing the water body of polluted city rivers, which follows that below the river beds of city rivers, the purification structure of a filler infiltration bed (3) is built, by utilizing water head (the height of water formed by artificial construction rubber dam or the natural height of water of river channels), polluted river water is transported to a water distribution system (2) by adopting a floating type water getting device (1), the river water to be treated is evenly distributed to the whole purification unit of the filler infiltration bed (3) by the water distribution system (2), and the river water after a purification treatment is discharged into the lower reaches of river channels by a water collecting system (4). The purification technology of the invention realizes an effective purification treatment on the river water simultaneously without occupying limited land resources at the two sides of the river channels, thus not changing the shape of the river channels, not influencing the flow of the river water, nor having any negative impact on the landscape effect of the two banks of the river channels.

The invention discloses a highly heat-conducting phase change heat storage material and a preparation method therefor. The heat storage material is prepared by compounding 67.5% by mass of paraffin, 7.5% by mass of expanded graphite and 25% by mass of through-hole foamed aluminum. The melting point of selected paraffin in the materials is 40-60 DEG C, and the porosity of the selected through-hole foamed aluminum in the materials is over 90%. The material has the advantages that the material is fast in heat absorption and heat release speed and great in heat storage, and is not varied in shape after phase change.

The invention provides an endoscope system with an anti-interference capacity and a surgical navigation function. A surgical navigation subsystem is realized by an inertial navigation module, and the inertial navigation module comprises three sensors, i.e., a triaxial accelerometer, a triaxial gyroscope and a triaxial magnetometer. Depending on a micro-electro-mechanical system technique, the navigation subsystem can be integrated in a handle of an endoscope, so that the endoscope has a positioning function. In a positioning algorithm, through proper anti-interference treatment, positioning errors caused by external magnetic fields and movement of the endoscope are reduced, and the positioning stability and accuracy are improved.

The invention discloses a spatial subdivision method for intersecting linear geographic elements. The method includes the following steps that: intersecting linear elements are dispersed so as to form point sets based on the principle of a Voronoi distribution model; point addition processing is performed on intersecting positions of every two intersecting linear elements; Delaunay triangulation and Voronoi diagram generation are performed based on the point sets; and a generated Voronoi diagram is clipped, and sub regions generated by point sets which belong to the same linear element are merged, so that sub regions of different linear elements can be obtained, and therefore, spatial subdivision of the intersecting linear geographic elements can be realized.

The invention relates to a preparation method of a plasma-sprayed ceramic coating for strengthening surface of a water pump impeller. The preparation method comprises the following steps: ultrasonically washing the surface of the water pump impeller with acetone, and drying; processing the surface of the water pump impeller through sand-blasting roughening by brown aluminum oxide; preheating the surface of a base body; and spraying ceramic powder onto the surface of the base body of the water pump impeller to obtain a durable and corrosion-resistant ceramic coating, wherein the ceramic coating on the surface of the impeller is obtained by being spraying for a plurality of times. The preparation method overcomes shortages of laser surface modification, thermal spraying, chemical plating and electroplating. The preparation method has the advantages that the use cycle of a water pump is obviously prolonged; requirements of the water pump impeller surface on corrosion resistance and cavitation resistance are met; workpieces are recycled repeatedly; processes are simple and feasible; the production efficiency is high; the automation degree is high; the sustainable development strategy is met; and the method has market economic benefits.

The invention discloses a novel metal base material shaping heat accumulating material and a preparation method thereof. The heat accumulating material is prepared by compounding paraffin and porous foamy copper, wherein the mass fraction of paraffin is 83.2%, the mass fraction of porous foamy copper is 16.8%, the melting point of the selected paraffin in the material is 40-60 DEG C, and the voidage of the selected porous foamy copper is 98% or above. The material has the advantages that the heat absorption and discharge speed is quick, and the appearance after phase change is unchanged.

The invention provides flowerlike alpha-FeOOH porous micro-nanospheres and a preparation method thereof, and relates to the technical field of nano materials. The preparation method comprises the following steps: firstly, dissolving Fe2SO4.7H2O in a mixed system of water and N,N-dimethylfomamide (DMF), and then performing heat treatment and a hydrolytic reaction to obtain the flowerlike alpha-FeOOH porous micro-nanospheres. The flowerlike alpha-FeOOH porous micro-nanospheres are formed by assembling mono-crystalline flowerlike spheres of which the spherical diameter is 2[mu]m, and the specific surface area of the porous micro-nanospheres is 258m<2>/g. The flowerlike alpha-FeOOH porous micro-nanospheres provided by the invention are obtained by virtue of a hydrolysis precipitation method, and are specifically obtained by preparing deionized water and DMF into a solution, then adding Fe2SO4.7H2O to perform a hydrolytic reaction, and raising the reaction temperature to about 40 DEG C to promote the reaction, so that the yield of the product is increased and the crystal morphology cannot be changed; and by virtue of ultrasonic washing, the flowerlike alpha-FeOOH porous micro-nanospheres with uniform particle size distribution, high surface activity and good adsorptivity are obtained.

The invention discloses a heat storage material and a preparation method, the heat storage material is prepared by mixing paraffin, expandable graphite, active carbon and copper powder. wherein paraffin mass fraction accounts for 65%, paraffin melting point is selected between 50 and 70 DEG C, expandable graphite mass fraction accounts for 15%, and mass fraction sum of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release, no corrosivity to metal containers and unchanged profile after phase transition.

The invention belongs to the technical field of machine manufacturing, and discloses a drilling machine capable of conducting quick positioning and used for machine manufacturing. The machine comprises a supporting frame, a first motor is fixed on one side of the supporting frame, a threaded rod is fixed at the output end of the first motor, bearings are fixed on two sides of the threaded rod, a gear is arranged on the side, away from the first motor, of the threaded rod, the threaded rod is sleeved with a sliding base, a hydraulic cylinder is fixed to the lower portion of the sliding base, vertical rods are arranged on the two sides of the hydraulic cylinder, a fixing frame is arranged on one side of the transverse straight portion of the supporting frame, and a limiting pin is arranged above the fixing frame. According to the machine, the gear and the limiting pin are arranged, the gear is connected with the threaded rod capable of driving the whole punching device, and after the position of the punching device is determined, the gear is fixed through the limiting pin so that it can be guaranteed that when the punching device works, the punching position cannot shift due to vibration.

The invention discloses a novel phase-change heat-storage material and a preparation method thereof, the phase-change heat-storage material is composed of paraffin, expandable graphite, active carbon and copper powder by mixing, wherein paraffin mass fraction accounts for 60%, the paraffin melting point is selected between 50-70 DEG C, expandable graphite mass fraction accounts for 20%, and sum of mass fraction of active carbon and copper powder accounts for 20%. The material has the advantages of fast heat absorption and heat release speed, no corrosivity to metal containers and no changed profile after phase change.

The invention relates to a method for marking on growing trees. The method comprises the following steps: polishing parts of the trees which require to be marked by abrasive cloth until the parts are smooth and clean; cleaning the parts which are polished by the abrasive cloth with distilled water; then inputting contents which require to be marked into a computer, enabling a laser machine to be aligned with the parts of the trees which are air-dried in the step (2), and starting the laser machine to mark corresponding contents on the parts; finally coating a liquid medicine on the parts. With the adoption of the method disclosed by the invention, the trees are marked and the growth of the trees is not affected.

The invention discloses a novel inorganic composite high-thermal-conductivity phase-change heat storage material and a preparation method thereof. The heat storage material is prepared from, in percentage by mass, 83.2% of crystal salt hydrate, 0.8% of an SAP (super absorbent polymer) and 16% of porous aluminum through composition, and the porosity of selected porous aluminum in the materials is 90% or higher. The material has the advantages that the heat absorption and release speeds are high, the heat storage capacity is high, and the appearance is unchanged after phase change.

The invention discloses a bearing rolling needle cage. A cage body consists of multiple separation strips for separating adjacent rolling needles and two connecting rings for respectively connecting the end parts of the two ends of each separation strip; a disconnecting place for opening the cage body is axially arranged on the cage body; one edge of the disconnecting place is provided with a buckle connected with a bayonet on the other edge; and the diameter of the head part of the buckle is larger than the diameter of the bayonet. The bearing rolling needle cage has the following advantages that as the disconnecting place is arranged on the cage body, after the rolling needles are quickly assembled, the cage body can coat an inner ring after being opened from the disconnecting place and the projection on one edge of the crack is connected with the other edge, so that the assembly is convenient and consumes little time; and preferably, the cage body consists of an openable metal framework and a shape layer wrapping the metal framework, and as the shape layer is preferably manufactured from PEEK which is better in deformation and recovery performance, the cage body can be opened conveniently and the recovered shape cannot be changed.

The invention discloses a device for measuring a sound mode of an engine pipeline. The device comprises an annular body, a bracket and microphones, wherein the annular body is in butt joint with the opening of the engine pipeline; the bracket is arranged on the annular body, extends toward the centering direction of the annular body and can rotate relative to the opening of the engine pipeline; the microphones are sequentially arranged on the bracket along the extension direction of the bracket at intervals and are used for detecting the intensity magnitude of sound wave from the engine pipeline. In the device for measuring the sound mode of the engine pipeline, the microphones are arranged on the bracket at intervals, and the bracket can rotate relative to the opening of the engine pipeline, the intensity magnitude of sound wave of the whole engine pipeline can be detected in all directions; compared with the prior art, the device has a smaller number of microphones, and can adapt to various engine pipelines of different cross sections in a rotating way, thereby increasing the universality.

The invention provides an electric car adopting wind energy. The electric car comprises a car body, a wind power generation unit, a storage battery and a main electric motor. The wind power generation unit is connected with the storage battery and used for converting the wind energy into electric energy and then storing the electric energy into the storage battery. The main electric motor is connected with the storage battery and used for converting the electric energy into kinetic energy driving the car to drive. The electric car is characterized in that the wind power generation unit is arranged at the front end of the car body. The electric car aims to save the energy, the air resistance in the driving process of the car is converted into the electric energy, the electric energy is stored into the storage battery and supplements power for driving of the car, tail gas exhaust can be effectively reduced, and pollution can be reduced.