104results about How to "Fast leveling" patented technology

The invention discloses a leveling method based on four-point support and an electromechanical automatic leveling system. In the leveling method, a symmetrical diagonal lifting and leveling strategy is adopted, and the leveling purpose is achieved mainly by regulating the levelness of the ligatures among supporting points on diagonal lines; and the leveling system comprises a central processor, a level sensor, a control keyboard, a display, four alternating-current servo drivers and four supporting legs; and each supporting leg comprises a motor, a speed reducer, a ball screw and a base. The invention is particularly suitable for large-medium-sized radar truck vehicle-mounted platforms, communication vehicles and various engineering vehicles for engineering machinery, the method has the advantages of high leveling efficiency, high leveling reliability and the like, and the leveling system has the advantages of high leveling precision, high intelligent degree, high speed, strong carrying capacity, good stability, high transmission efficiency, suitability for severe environments and the like.

The invention discloses a fluorine-containing acrylate leveling agent for an environment-friendly type water-soluble coating and a preparation method thereof. The acid value of the leveling agent is 30-60; the number-average molecular weight of the leveling agent is 3500-4500; the weight-average molecular weight of the leveling agent is 5000-10000; and the polydispersity of the leveling agent is 1.7-3.0. The invention aims at providing the fluorine-containing acrylate leveling agent for the environment-friendly type water-soluble coating, which can reduce the surface tension of a coating system, and has the advantages of high leveling speed, strong anti-shrinkage capacity and excellent long-wave leveling.

The invention relates to a hydraulic automatic leveling system and a hydraulic automatic leveling method for a seabed drilling machine. The leveling system comprises support plates, large arms, chains, hydraulic cylinder legs, a base and a hydraulic system, wherein the base supports the drilling machine, and is connected with the hydraulic cylinder legs; the large arms are connected with the hydraulic cylinder legs, the base and the support plates; and the support plates are in contact with a seabed surface. The leveling method comprises the following steps of: selecting mutually vertical axes X and Y on the base, arranging double-axis tilt sensors along the axis X or Y, measuring inclination angles in two coordinate axis directions by using the double-axis tilt sensors, performing amplification, filtration and isolation by using a signal conditioning module, transmitting conditioned signals to data acquisition equipment and a computer, performing digital-to-analogue conversion and amplification after the signals pass through a signal analysis module, and outputting three paths of current to drive the motions of valve elements of three proportional reversing valves, control the flow of the system and drive the three hydraulic cylinder legs to ascend by y1, y2 and y3 to realize leveling. The system and the method are applied to kinds of offshore drilling equipment, and are highin leveling speed and accuracy.

The invention discloses a fluorine-containing acrylate leveling agent for a solvent type coating. The surface tension of the leveling agent is 24-26 dynes; the number-average molecular weight of the leveling agent is 2000-4500; the weight-average molecular weight of the leveling agent is 5000-12000; and the polydispersity of the leveling agent is 2.0-2.8. The invention aims at providing the fluorine-containing acrylate leveling agent for the solvent type coating, which can reduce the surface tension of a coating system, and has the advantages of high leveling speed, strong anti-shrinkage capacity and excellent long-wave leveling.

The invention discloses a synthetic copper plate grinding disk which is characterized by comprising the following components: 90-95% of copper powder, 1-5% of nickel powder and 3-10% of cerium powder, and a mixture of epoxy resin and polyurethane adhesive, which accounts for 10-50% of the total amount of the above components and is added after mixing; and the preparation method of the synthetic copper plate grinding disk comprises the following steps: heating the mixture to 100-200 DEG C in a reaction container, thoroughly stirring, carrying out mould pressing, and cooling for 8-15 hours for forming. The synthetic copper plate grinding disk is used for grinding and polishing LED (light-emitting diode) chips, LED substrates, LED display screen optical crystals, silicon chips, compound crystals, liquid crystal panels, precious stones, ceramics, germanium wafers, metal workpieces and the like, and can significantly improve the grinding rate of the workpieces.

The invention relates to a foundation efficient leveling device for building construction. The foundation efficient leveling device for building construction is uniform in foundation leveling, high inleveling speed and capable of saving time and labor. In order to achieve the technical purposes, the foundation efficient leveling device for building construction comprises a bottom plate, wheels, an n-shaped frame, a lifting device, a leveling device and the like; the wheels are symmetrically arranged at the bottom of the bottom plate, the n-shaped frame is arranged on the top of the bottom plate, and the lifting device is arranged on the top in the n-shaped frame; guide rails are symmetrically arranged on the left inner wall and the right inner wall of the n-shaped frame, and guide blocksare arranged on the guide rails; a fixing plate is arranged between the left guide block and the right guide block. The device achieves the effects of being uniform in foundation leveling and high inleveling speed and saving time and labor, the device adopts a rolling flattening mode, so that foundation leveling is more uniform, and the device can also be lifted and moved.

The invention belongs to the technical field of freight vehicle material leveling equipment, and particularly discloses a freight vehicle material leveling machine. The freight vehicle material leveling machine comprises two supporting tables, wherein supporting columns are arranged on the two supporting tables; a cross beam is arranged between the two supporting columns, a first support and a servo motor are arranged on the cross beam, a first gear is arranged on an output shaft of the servo motor, a second gear is arranged on the first support, a second support is arranged on the first support, the first gear is meshed with the second gear, a screw rod is arranged on the second gear, a sleeve ring is arranged on the second support, the vertical rod penetrates through the sleeve ring, a plurality of scraping rods are hinged to the sleeve ring, the vertical rod is provided with a cavity structure, a spiral groove is formed in the inner wall of the cavity structure, a supporting rod with a bulge is arranged in the spiral groove, and a plurality of ejector rods are hinged to the lower end of the supporting rod. The freight vehicle material leveling machine is mainly used for levelingmaterials of a freight vehicle, and the problem that the leveling effect of the materials in the freight vehicle is not ideal is solved.

The invention relates to the technical field of pipe maintenance equipment, in particular, remote pipe local annular repair equipment and method. The remote pipe local annular repair equipment comprises a detection mechanism, a repair mechanism, an auxiliary mechanism and two small-size intelligent vehicles. The detection mechanism and the repair mechanism are each arranged on the corresponding small-size intelligent vehicle. Each small-size intelligent vehicle comprises a base plate, a lifting plate, an ascending-and-descending block and a small-size hydraulic rod. One end of each lifting plate is in shaft connection with one end of the corresponding base plate in a matched manner. Each small-size hydraulic rod is mounted at the outer side of the corresponding base plate and used for driving the other end of the corresponding lifting plate to move. A top beam bracket is arranged above each base plate in an erected manner. Each ascending-and-descending block is movably arranged at oneend of the corresponding top beam bracket. The bottom of each ascending-and-descending block is in transmission fit with the free end of the corresponding lifting plate. The detection mechanism comprises a CCD camera and a light supplementing device, wherein the CCD camera and the light supplementing device are mounted at the front sides of the ascending-and-descending blocks corresponding to theCCD camera and the light supplementing device. The repair mechanism comprises a first spray head, a second spray head and a third spray head, wherein the first spray head, the second spray head and the third spray head are mounted at the front sides of the ascending-and-descending blocks corresponding to the first spray head, the second spray head and the third spray head. The auxiliary mechanismcomprises a cleaning air bag and a compaction air bag. By means of the remote pipe local annular repair equipment and method, the repair quality can be greatly improved.

The invention discloses a construction engineering cost field surveying and mapping device based on a BIM technology. The device comprises a tripod, and the top of the tripod is provided with a leveling device; through the cooperation of the tripod, the leveling device, a piercing device, a force application device, a reset device, a monitoring device and a locking device, surveying and mapping personnel can quickly level a clamping device, the leveling speed is high, time and labor are saved, the leveling is not limited by the leveling experience of surveying and mapping personnel, the leveling accuracy is high, through the clamping device, the surveying and mapping personnel can rapidly install a surveying and mapping instrument on the leveling device, the surveying and mapping personnel can rapidly adjust the position height of the clamping device after centering and leveling through a limiting device, then the position height of the clamping device is made to be matched with the height and using habits of the surveying and mapping personnel, and the using comfort is improved; and the practicability of the construction engineering cost field surveying and mapping device based on the BIM technology is improved.

The invention relates to the technical field of coatings, and discloses a waterborne intermediate paint coating and a preparation method thereof. The waterborne intermediate paint coating is preparedfrom the component A and the component B; the component A is prepared from the following components in percentage by mass: epoxy emulsion, a dispersant, a defoamer, a coalescing agent, mica iron oxide, glass flake, fillers, barium sulfate, pigments, expanded graphite, vermiculite, silicon dioxide, an anti flash rust agent, zirconium phosphate, a base material wetting agent, a thickener and the balance of deionized water; the component B is prepared from the following components in percentage by mass: a curing agent and the balance of a coalescing agent; the mass ratio of the component A to thecomponent B is (4-8) to 1. The waterborne intermediate paint coating is good in flow resistance, stable in storage performance and anticorrosion performance, and good in adhesion, impact resistance,flame retardancy and flexibility performance.

The invention discloses a gene sequencer, an automatic leveling apparatus and an automatic leveling method. The automatic leveling apparatus is used for leveling a sequencing reaction small chamber, and comprises an installation platform, a leveling plate, at least a rotation mechanism, at least a driving mechanism, an image collection device and a control device, wherein the leveling plate comprises a rotation supporting point part connected to the rotation mechanism and used for rotatably arranging the whole leveling plate on the installation platform and a rotation driving part connected to the driving mechanism, the image collection device is arranged corresponding to the sequencing reaction small chamber and collects the information of the distances between at least two position points of the reaction channel of the sequencing reaction small chamber and the image collection device, and the control device forms communication connections with the image collection device and the driving mechanism, and outputs a control signal according to the distance information collected by the image collection device so as to control the driving mechanism to drive the leveling plate to rotate, such that the distances between at least two position points of the reaction channel and the image collection device are equal or the distance difference is in a preset range. According to the present invention, with the gene sequencer, the automatic leveling apparatus and the automatic leveling method, the automatic leveling can be achieved, and the efficiency is high.

The invention discloses a digital printing circular-screen sizing machine. The digital printing circular-screen sizing machine comprises a machine table, a conveying device, an edge blowing device, a circulating device and a driving device, wherein the conveying device, the edge blowing device, the circulating device and the driving device are arranged on the machine table. The driving device is connected to the conveying device, the edge blowing device and the circulating device in a driving mode. The conveying device comprises a cloth guiding roller. The edge blowing device comprises an edge blower, a yarn separating roller, a cloth pressing roller and a pressure bearing roller. The circulating device comprises an annular conveying belt, a driving roller, a water washing pressing roller and a driven roller. A gap is reserved between the cloth pressing roller and the pressure bearing roller, and the annular conveying belt penetrates through the gap. A glue jetting opening corresponding to the annular conveying belt is further formed in the portion, between the pressure bearing roller and the driving roller, of the machine table. The digital printing circular-screen sizing machine is a multifunctional continuous device and is suitable for carrying out single-face sizing on fabric such as cotton cloth, chemical fibers, silk and knitted fabric before digital printing is carried out; glue is jetted through the glue jetting opening, so that sizing is more even, and more sizing agents are saved.

The invention provides a UV top-coat paint, a preparation method and application thereof, and relates to the technical field of paint. The UV top-coat paint provided by the invention is prepared from the following components by weight: 15-30 parts of fatty acid modified epoxy acrylate, 8-15 parts of aliphatic polyurethane acrylate, 5-10 parts of thermoplastic acrylate, 30-60 parts of a functional monomer, 4-6 parts of a photoinitiator, 0.5-2 parts of a dispersing agent, 0.1-0.5 part of a defoaming agent, 0.2-0.6 part of a flatting agent and 8-15 parts of matting powder. The UV top-coat paint product prepared by adopting the technical scheme is high in leveling speed and curing efficiency, and the solid content is close to 100%; when being applied to a reciprocating spraying process, the UV top-coat paint is convenient and fast to use, the product can be effectively recycled, the material loss and the emission of harmful substances are reduced, and the increasingly stringent environmental protection requirement can be met.

A method and apparatus for levelling the filter disc assembly of rotary-disc vacuum filter is disclosed. Two horizontal rules as the location reference are arranged along the radial direction of filter disk. When lattice is levelled, the equiheight cushion blocks are put between lattice and horizontal rule and a pull device is used to bind said horizontal rule, cushion blocks and lattice closely.Finally, the lattice in a same horizontal level is welded in filter disk. Its advantages are high correctness, speed and precision.

The invention discloses a cyclic continuous cleaning and compacting device for a road surface. The cyclic continuous cleaning and compacting device comprises a placement board and a compacting board,wherein a support and universal wheels are arranged at the lower end of the placement board, a vertical suspension board is arranged in the middle of the lower end of the placement board, driving semi-gears are symmetrically arranged at the upper and lower parts of the front of the vertical suspension board, the back of the vertical suspension board is provided with a motor, a gear board in meshedtransmission with the driving semi-gear is arranged at the left of the driving semi-gear, a lower push rod and an upper limiting lifting rod are arranged at upper and lower ends of the gear board, the lower end of the lower push rod is provided with the compacting board, stable telescopic rods are arranged at two sides of the compacting board, an air intake cylinder is arranged at the upper end of the placement board, the upper limiting lifting rod is provided with a piston board, an air inlet channel, and an air discharge channel, the air inlet channel is provided with a filter cavity and anair intake tube, and the air discharge channel is provided with a connecting air discharge tube and a nozzle. The universal wheels travel on the ground so as to enable the device to compact the roadsurface continuously, further, the device can blow and exchange air circularly, thereby reducing dust contamination.

The invention provides a financial bill leveling and bonding device, and solves the problem of large reduction of the working efficiency of financial managers due to use of a lot of time for arranging bills. The financial bill leveling and bonding device comprises a base; the upper part of the base is fixedly connected with a storage box; the storage box is provided with a V-shaped storage port with an upward opening; an opening part is arranged at the lower end of the storage port; a heating tank is connected below the opening part; the middle part of the heating tank is connected with a sol tank; the heating tank and the sol tank are both strip-shaped structures; an electric heating wire is arranged between wall bodies of the heating tank and the sol tank; two opposite rubber rollers are arranged in the sol tank; multiple leakage holes communicated with the internals of the rubber rollers are formed in the pipe walls of the middle parts of the rubber rollers; multiple bundles of bristles are distributed at the middle parts of the rubber rollers in a cluster manner; the rubber rollers are produced by heat conducting materials; and the rubber rollers are spirally wound and fixed with glass fiber heating strips. The financial bill leveling and bonding device can quickly realize bill leveling and binding, largely shortens the bill arrangement time for financial workers, and facilitates improvement of the working efficiency.

The invention provides functional 3D printing photosensitive resin, which is prepared from the following components in percentage by weight: 15 to 50 percent of acrylate resin, 40 to 80 percent of anacrylate monomer, 0.1 to 1.5 percent of a dye, 1 to 5 percent of a photoinitiator, 0.1 to 5 percent of a leveling agent, 0.01 to 2 percent of a ultraviolet absorbent, 0.1 to 0.3 percent of micromolecular polyol and 2 to 4 percent of functional nanoparticles. Compared with most photosensitive resin of the same type in the market, the 3D printing photosensitive resin has the advantages that the leveling speed is extremely high, the strength is high, and the success rate of high-speed continuous forming of 3D printing products is guaranteed. The 3D printing photosensitive resin disclosed by the invention is stable in mechanical property, excellent in ageing resistance, high in hardness, good in strength and low in curing volume shrinkage rate. According to the 3D printing photosensitive resindisclosed by the invention, the functional nanoparticles are added, so that the 3D printing photosensitive resin has functionality, the application scene of the 3D printing photosensitive resin is expanded, the physical and chemical properties of the 3D printing photosensitive resin are changed, the 3D printing photosensitive resin has a wider application scene, and the performance boundary of the 3D printing photosensitive resin is widened.

The invention discloses a construction method of installation equipment without a sizing block. The construction method includes the following steps that it is guaranteed that the positions of foundation bolts are accurate according to a construction blueprint and by standardizing a pouring foundation and fixing the foundation bolts; after the foundation passes acceptance inspection, a base of the equipment is installed on the foundation bolts; a gasket and a clamp nut are installed on each foundation bolt; a leveling nut is installed on each foundation bolt; auxiliary steel plates are welded to the base and located above the foundation bolts; the height of the leveling nuts is adjusted to level the base of the equipment by supporting the auxiliary steel plates through the leveling nuts, and when the base of the equipment is leveled, gaps are always reserved between the clamp nuts and the base of the equipment; the clamp nuts are tightened after the base of the equipment is leveled, and then the position of the base of the equipment is fixed; the foundation is secondly poured and maintained below the base of the equipment. The construction method is easy to operate, high in leveling speed and leveling accuracy, and especially suitable for installation and leveling of the equipment with the base or light equipment.

The present invention relates to the technical field of water-based paint, especially the technical field of matte paint, and specifically discloses a matte finish varnish, which comprises the following components in parts by mass: 50-60 parts of water-based acrylic matte emulsion, 30 parts of deionized water ~46 parts, substrate wetting agent 0.05~0.1 parts, defoamer 0.1~0.2 parts, propylene glycol 1~2 parts, film forming aid 1~2 parts, thickener 0.2~0.4 parts. The matte finish varnish of the present invention has the advantages of good gloss and good dispersibility, is not easy to form stratification and precipitation, is stable in storage, and avoids the problem of easy mold and whitening when using matte powder.

The invention relates to a rapid and accurate leveling method for a turntable, i.e. a rapid leveling method for a turntable, utilizing an inclinometer with two orthogonal testing axis as the testing tool, placing the inclinometer at the center of the table facet of the turntable to be leveled, enabling two orthogonal testing axis of the inclinometer to be parallel to the table facet of the turntable, firstly, measuring the inclination angle value ThetaX1 and ThetaY1 outputted by two testing axis when the inclinometer is at the initial position I, then rotating the inclinometer along with the turntable 180 degrees to the position II and measuring the inclination angle value ThetaX2 and ThetaY2 outputted by two testing axis when the inclinometer is at the position II; respectively calculating the average value of the inclination angle of the two axis of the inclinometer at the position I and the position II by the following equation: ThetaX equals to sum of ThetaX2and ThetaX1 and divided by two, ThetaY equals to sum of ThetaY2 and ThetaY1 and divided by two; adjusting a leveling mechanism under the base of the turntable to enable the inclination angle value ThetaX and ThetaY outputted by two testing axles of the inclinometer to simultaneously meet that ThetaX equals to ThetaX and ThetaY equals to ThetaY, then the turntable is in the horizontal status. The rapid and accurate leveling method for the turntable has the advantages of high leveling accuracy, rapid leveling speed and being adaptable for the severe environment change.

The invention provides ink, an ink-jet printing method, a film encapsulation method and an organic film. The ink is prepared from electromagnetic response particles, wherein the addition proportion ofthe electromagnetic response particles is 2 to 20 electromagnetic response particles per cubic micrometer ink. According to the invention, the electromagnetic response particles are added into the ink used for ink-jet printing; the movement of the electromagnetic response particles is controlled through an electromagnetic field mode, so that the movement of the ink is controlled; the leveling speed of the ink is accelerated; and the technical problems that in an existing ink-jet printing process, the leveling speed of the ink is low, so that the speed of a whole encapsulation process is seriously influenced can be solved.

The invention discloses a pipe end flattening feeding structure which comprises a base, a rotary shaft arranged on the base, a cutter installation disc fixed to the end of the rotary shaft, a rotary drive part arranged on the base and used for driving the rotary shaft to rotate, a linear drive part used for driving the rotary shaft to move axially and a combination part arranged between the base and the rotary shaft and used for making the rotary drive part drive the rotary shaft to rotate and making the linear drive part drive the rotary shaft to move linearly. The pipe end flattening feeding structure is simple, convenient to manufacture and wide in application range; when the end face of a steel pipe is flattened, the steel pipe is fixed, a cutter is rotated, the flattening speed is high, the effect is good, the retracting speed of the rotary shaft is high, and the work efficiency of a whole device is high.

The invention discloses a sand flattening machine which comprises a chassis frame. The lower part of the chassis frame is provided with rollers, a guide rail cross beam frame is installed on the chassis frame, the guide rail cross beam frame is also connected with a leveling mechanism for keeping the guide rail cross beam frame horizontal, a sliding guide rail is installed on the guide rail crossbeam frame, and a moving beam is connected to the guide rail through a slider; a driving mechanism for driving the moving beam to reciprocate along the sliding guide rail is connected to the moving beam; and a sliding beam is connected below the moving beam, a sand flattening work head is connected to the lower part of the sliding beam, the sand flattening work head is provided with a scraper, comb teeth and an electric vibrator, and a pair of telescopic devices used for adjusting the height and angle of the sand flattening work head is connected between the moving beam and the sand flatteningwork head. The sand flattening machine has the beneficial effects of being good in spreading effect, high in work efficiency and capable of reducing construction cost and replacing manual work.

The invention belongs to the field of automatic control and relates to an approximating type hydraulic leveling method. According to the approximating type hydraulic leveling method, through levelness of a platform, a needed leveling leg journey from the plane of the current platform to another plane with double-axis horizontal deviation being decreased is calculated, and corresponding leveling legs are controlled to stretch out and draw back of for approximating a superior plane; and after approximating is completed, the process is repeated, and repeated approximating is conducted till needed accuracy is achieved. According to the approximating type hydraulic leveling method, the requirement of the heavy platform for leveling of the accuracy is achieved, and the problems that the leveling speed is slow, vibration is large, virtual legs occur, adaptability of a position is poor, and a system is complex and poor in reliability are solved.

The invention provides an asphalt pavement leveling device. The asphalt pavement leveling device comprises a vehicle frame, a hot melting module and a flattening module, wherein the hot melting moduleand the flattening module are assembled on the vehicle frame in a front-rear parallel mode. A rotating module is assembled inside the hot melting module, drill bits downwards extending out of the hotmelting module are assembled on the lower portion of the rotating module in an arrayed mode, and the drill bits are assembled on the lower portion of the rotating module in an automatic rotating mode. Heating heads are assembled in the drill bits, a heating module is assembled on the vehicle frame, and the heating heads are connected with the heating module. The flattening module comprises a horizontal pressing plate assembled on the lower portion, a vibrating module is designed in the flattening module, and the pressing plate is connected with the vibrating module. When the asphalt pavementleveling device conducts leveling, the step that an asphalt pavement is broken to pieces again and then cleared is not needed, the pavement is directly drilled for heating, and thus the asphalt pavement is melted; and refilling of asphalt materials is not needed, the repairing process can be greatly simplified, the equipment structure can be reduced, and the equipment cost and the repairing cost are lowered.

The invention discloses a rotary loading machine. The rotary loading machine comprises a working mechanism, a rotary mechanism, an underpan mechanism, a power mechanism and a driving cab. The working mechanism is located on the front portion of the driving cab and comprises a hydraulic ascending-and-descending arm and a rotary support, wherein the front end of the hydraulic ascending-and-descending arm is provided with a loading hopper. The hydraulic ascending-and-descending arm is arranged on the rotary support. The underpan mechanism comprises a loading machine front frame. The rotary mechanism is located between the rotary support and the loading machine front frame. In the working process, the working mechanism is driven by the rotary mechanism to rotate leftwards and rightwards. The driving cab is arranged independently and does not rotate along with the rotary mechanism. When the rotary loading machine needs to turn the direction for loading operation, the working mechanism can rotate independently, so that the space for rotation is small, steering operation is conducted more flexibly, and furthermore, loading operation efficiency is improved; and multiple types of work tasks such as sundries clearing, soil leveling and obstacle removal can be completed by the rotary loading machine rapidly.

The invention discloses an automatic leveling method for supporting legs. The supporting legs comprise horizontal supporting legs and vertical supporting legs, an absolute displacement sensor for acquiring the extending length of the vertical supporting legs and a relative displacement sensor for acquiring the vertical height difference of the vertical supporting legs relative to the reference vertical supporting legs are correspondingly arranged on each vertical supporting leg; and the automatic leveling method for the supporting legs comprises the following steps that all horizontal supporting legs are enabled to extend to a position; all vertical supporting legs are enabled to extend to a preset length L1; the vertical supporting leg with the highest vertical height direction is selected as a reference vertical supporting leg according to the relative displacement sensor, and then the rest vertical supporting legs are subjected to telescopic adjustment according to the vertical height difference value of the relative reference vertical supporting legs obtained by the relative displacement sensors at the same time, until the difference between the vertical height obtained by therelative displacement sensors is zero, and leveling is completed; and the vertical height direction is perpendicular to the horizontal plane. The automatic leveling method has the advantages of beingsimple and rapid in leveling operation, high in efficiency, high in precision and the like.

The invention provides a technical scheme of a coal leveling bar, and the scheme comprises a rod body, the rod body comprises a horizontal portion and an inclined portion, one end of the inclined portion is fixedly connected with the end of the horizontal portion, the other end of the inclined portion is fixed with a coal scraping mechanism, and an included angle between axis of the horizontal portion and axis of the inclined portion is 4-6 degrees. According to the invention, the nature sagging problem in the usage process of the coal leveling bar is thoroughly solved, thereby improving coal leveling quality; simultaneously the coal scraping plate can rapidly and uniformly level the coal materials, thereby improving coking quality with good utility value and economic benefit.

The present invention discloses a growth device and process of a silicon vapor epilayer and aims at providing a growth device and a process with homogeneous epilayer, convenient operation and high efficiency. The growth device includes a base body, a fixing slot on the base body, a step of 1-3mm wide on the edge of the fixing slot bottom, an annular groove of 1-3mm deep on the step and an arcual concave of 1-5mm deep below the step. The top of the annular groove is 1-3mm wide. The growth process includes the following steps: the silicon substrate wafer is positioned in the fixing slot with the upper surface of the substrate wafer 0.1-1mm lower than the upper surface of the base, and the epilayer grows. This invention has simple arts and crafts, provides homogeneous epilayer, controls the distribution area of the slip lines and removes the contaminative layer of metal impurities on the surface, improving the quality of the silicon epilayer and ensuring the performance of the product.

The invention discloses a polyacrylate copolymer leveling agent, and a preparation method and an application method thereof in enameled wire enamel. The leveling agent consists of a component A, a component B, a component C, a component D and a component E, wherein the component A is an acrylate monomer with the carbon atom number of 4-18; the component B is an acrylic or acrylate monomer containing carboxyl groups or hydroxyl groups; the component C is a hyperoxide or azo free radical initiator; the component D is a molecular weight modifier; the component E is a solvent; the added quantity of each component in mass is as follows: the component A accounts for 100 parts, the component B accounts for 5-30 parts, the component C accounts for 0.1-1% of the sum of the component A and the component B, the component D accounts for 0.3-3% of the sum of the component A and the component B, and the component E accounts for 100-160% of the sum of the component A and the component B. The leveling agent has the advantages of high leveling speed and good temperature resistance. The preparation method comprises two preparation methods of solution polymerization and bulk polymerization and solution diluting. The application method in enameled wire enamel mainly comprises the step of adding the leveling agent, which accounts for 0.5-2.5% of the total mass of the enameled wire enamel, into the enameled wire enamel.