131results about How to "Reinforcement" patented technology

The present invention discloses a detection method of concrete building water leakage. The method comprises the steps of (1) current condition visual examination, (2) current condition measurement record, (3) aspiration measurement change, (4) the connection of a wave metre and an infrared detector, the determination of the position of a water leakage source and a water leakage path, and the determination of a water leakage serious degree by using the wave metre. The invention provides a leakage blocking method which comprises the steps of (1) drilling a waterproof layer grouting hole, (2) carrying out grouting to make a new waterproof layer, (3) making a leakage repairing reinforced grouting hole in concrete, (4) carrying out internal leakage repairing reinforced grouting, (5) sealing the water inlet of a water leakage source, and filling a water leakage path according to the water leakage serious degree. Compared with the prior art, the methods have the advantages that by using the detection and leakage blocking methods, the leakage blocking method is excellent, the defect degree of an existing concrete structure is accurately judged and the reinforcement of the concrete structure at a later period can be accurately repaired, and thus the durability of concrete is improved to play a significant role.

The invention relates to an erbium-containing high-temperature titanium alloy and a preparation process thereof, belonging to the technical field of alloys. The alloy comprises the following components in percentage by weight: 6.0% of Al, 2.5% of Sn, 4% of Zr, 0.3% of Mo, 1% of Nb, 0.35% of Si, 0.1%-0.3% of Er and the balance of Ti, wherein impurity element O accounts for 0.088%-0.090%. The preparation process comprises the following steps of: forging a cast ingot at 100 DEG C-200 DEG C higher than an (alpha plus beta) / beta phase change point through a sectional heating method, cooling in air, further forging a forged piece at 50 DEG C-150 DEG C lower than the (alpha plus beta) / beta phase change point through the sectional heating method, controlling the deformation amount at 50%-60%, cooling in air, performing heat preservation on the forged piece at 30 DEG C-50 DEG C lower than the (alpha plus beta) / beta phase change point for 1 hour, cooling in air to room temperature, then performing the heat preservation at the temperature of 700 DEG C-750 DEG C for 2 hours, and cooling in the air to room temperature. The titanium alloy has excellent creep property and thermal stability.

The invention discloses a composite sound-proof formed foaming automobile carpet and a preparation method thereof. The carpet is made of three layers of materials, namely a fabric layer, a middle multi-layer co-extrusion film layer and a bottom material layer, wherein the fabric layer is made of polyester fiber; the middle multi-layer co-extrusion film layer is made of PE / PE / AD / NYLON / AD / PE / PE multi-layer co-extrusion films; and the bottom material layer is made of polyester fiber. The sound-proof formed foaming automobile carpet provided by the invention has good sound insulation effect, can effectively prevent PU foaming breakdown, and has no toxic odor such as formaldehyde and the like and no penetrating odor; the fabric of the carpet has elegant color and the loop appearance can be adjusted; and the composite sound-proof formed foaming automobile carpet is an environment-friendly carpet with high sound insulation performance. The method for preparing the composite sound-proof formed foaming automobile carpet provided by the invention has simple process, high efficiency, strong operability, high qualification rate of finished products, and can be suitable for mass production.

The invention relates to a steering folded scaffold unit for building construction. Each steering folded scaffold unit comprises upright poles, scaffold boards and a protective net, wherein the upright poles are vertically and parallelly arranged and separated into a left group and a right group, each group includes at least two upright poles; the scaffold boards are positioned between the left group and the right group of the upright poles and horizontally arranged in multiple layers, and one ends of each layer of the scaffold boards are rotationally connected with the upright pole positioned at one side through a hinge, and the other ends of the layer of scaffold boards are connected with the upright pole positioned at the other side through a detachable pin shaft; and the protective net is arranged between a left upright pole and a right upright pole which are positioned at the outer side and at least divided into two parts in a longitudinal direction, and adjacent parts are rotationally connected through hinges. The steering folded scaffold unit has the advantages of simple and fast folding method, small folded size and storage space and transportation cost saving, and is convenient and reliable in use.

The invention provides basalt fiber and glass fiber mixed reinforced resin, as well as a preparation method and application thereof, and relates to the technical field of composite materials. The preparation method comprises the following steps: adding a coupling agent into a graphene oxide solution to treat mixed fiber consisting of basalt fiber and glass fiber, and carrying out the low temperature plasma process to obtain a modified reinforced material; preparing the basalt fiber and glass fiber mixed reinforced resin from the modified reinforced material and nano-zirconia-blended thermosetting resin through a curing molding process. The preparation method is simple in process; a fiber reinforcing body and resin are both subjected to certain modification treatment, so that the reinforced resin is extremely high in consistency; meanwhile, with the excellent characteristics of the basalt fiber and the glass fiber, the reinforced resin is high in mechanical property and corrosion resistance, can be applied to the field of building materials, and has a good development and application prospect.

The invention discloses a flexible casting mold plate and a construction method using the same. The flexible casting mold plate comprises a mold plate outer wall, a first inflating space and a castingspace. The first inflating space is internally provided with at least one inflating skeleton structure, and the inflating skeleton structures communicate with each other or are mutually independent.Each inflating skeleton structure is internally provided with a second inflating space, and the at least one inflating skeleton structure makes contact with the outer wall of the mold plate to supportthe first inflating space. The construction method of the flexible casting mold plate comprises the steps that flexible casting mold plates are prefabricated, and the shapes of the casting spaces aremade to be the same as the shapes of structural bodies needing to be cast; the first inflating space, or the first inflating space and the second inflating spaces are filled with gas to enable the flexible casting mold plates to be completely expanded; and the casting spaces are filled with materials to form the structural bodies needing to be cast. According to the flexible casting mold plate and the construction method, through the whole inflating structure, molds are directly provided for building structural pieces on construction sites, and the flexible casting mold plate and the construction method are suitable for casting structural bodies on the land, in water and on underwater construction sites.

The present invention discloses a calcium carbonate biological mineralizing and strengthening method for calcium carbonate stone cultural relic. The technical process of the present invention is that: the solvent is first used for cleaning the surface of the stone cultural relic; and then the present invention uses a compound solution with biological amphipathic function as a organic molding board to pretreat the surface of the stone cultural relic and to make the surface of the stone add with a functional group unit; the supersaturation solution of calcium carbonate is used for making with infiltration treatment; under the control of the functional group unit, the calcium carbonate is inducted to grow into core directional crystal; the rocked and incompact grain can be connected so as to make the strengthened protection for the surface of the stone material. The present invention has the advantages of similar property between the protective material and the base material, much better compatibility; the present invention does not change the appearance, color and hand feeling of the protected stone cultural relic; and the compression strength, water resistance, acidity resistance and soiling resistance are improved and enhanced greatly.

The invention discloses a power transmission buffer device for an electric tower. The power transmission buffer device comprises support blocks, wherein one side of each support block is fixedly connected with a sleeve; the inner walls of two sleeves are connected with support rods in a sliding manner; a first spring is fixedly connected between one end of each support rod and one side of the inner wall of the corresponding sleeve and the surface of each support rod is fixedly connected with a second spring; and the top of each second spring is fixedly connected with a connection plate. The invention relates to the technical field of power. According to the power transmission buffer device for the electric tower, the problems that an electric wire is in oscillation and impact force on theelectric tower is easily generated to damage the electric tower due to the facts that the electric tower is built on relatively high ground in general, a tower body is relatively high, the electric wire is located in the high altitude and the high-altitude wind is high in strength and high in persistence are solved; the electric wire is prevented from falling off; a certain potential safety hazardis eliminated; the workload of a worker for electric tower maintenance is reduced; and the cost of a power maintenance department is reduced.

The invention belongs to the technical field of white carbon black, and particularly relates to a preparation method of high reinforced white carbon black for rubber. According to the method, solid sodium silicate and water serve as raw materials, hexamethyl disilazane and Si69 serve as modifiers, and ethylene glycol is added and serves as an adjuvant to prepare the high reinforced white carbon black. Compared with a traditional white carbon black preparation method, the preparation method has the advantages that silicon hydroxyl on the surface of the white carbon black can be decreased, and liquid water-soluble alcohol is further added to promote modification of the modifiers. The silicon hydroxyl on the surface of the white carbon black prepared by the preparation method can be greatly decreased, compatibility of the white carbon black and rubber is improved, the processability of the rubber is improved, detection finds that mechanical performances such as wear resistance, tensile strength and stress at definite elongation of the rubber prepared from the modified white carbon black are improved, and the reinforcing property of the white carbon black is improved.

The invention discloses an organic-inorganic composite water plugging reinforcement material and a preparation method thereof. The material consists of a component A and a component B, wherein the component A comprises the following ingredients by weight percent: 97-99% of water glass, 0.5-1.5% of a chain extension cross-linking agent, 0.2-0.6% of an organo-metallic catalyst, and 0.3-0.9% of an amine catalyst; the component B comprises the following ingredients by weight percent: 65-75% of crude MDI, 0-8% of PPG (polypropylene glycol)-2000, 2-10% of polyether triol 330N, 14-23% of a diluent and 1-2% of a foam stabilizer; the mass ratio of the component A to the component B is 1:(0.7-1.2). The preparation method comprises the following steps: mixing the ingredients of the component B according to the weight percent, leaving the mixture to stand for 12 hours, adding the component A, and uniformly stirring, so as to obtain the water plugging reinforcement material which is high in strength, good in environment friendliness and durability, non-flammable, and low in cost. According to the invention, the limitation problem that a polyurethane water plugging material can be used for reinforcement or plugging of a small amount of leakage water only.

A holding device (6) for an optical element (5) in an objective (1) has a mount (4) that is connected to the objective (1) , on the one hand, and at least indirectly to the optical element (5), on the other hand. Arranged between the mount (4) and the optical element (5) is a reinforcing element (8) whose coefficient of thermal expansion corresponds substantially to the coefficient of thermal expansion of the optical element (5).

The invention discloses a building external wall waterproof and crack resistant thermal insulation structure. The building external wall waterproof and crack resistant thermal insulation structure comprises a wall base layer. A polymer waterproof mortar bottom layer is arranged on the wall base layer, the polymer waterproof mortar bottom layer is provided with a galvanized steel wire net, and thegalvanized steel wire net is provided with a polymer waterproof mortar surface layer; and the polymer waterproof mortar surface layer is provided with a thermal insulation layer, and the thermal insulation layer is provided with a polymer waterproof crack resistant mortar layer. According to the building external wall waterproof and crack resistant thermal insulation structure, compared with the prior art, the problem that the crack resistant strength of a building external wall is poor can be solved, the waterproof performance of the wall base layer is improved, the reinforcing effect of thewall base layer is achieved, the structure is simple, construction is convenient, the cost is low, and the service life is long.

The present invention discloses a filtration core housing fixation apparatus, and a water purifier having the filtration core housing fixation apparatus. The filtration core housing fixation apparatus comprises a shock reducing fixation block connected to the panel of a water purifier opening cover, wherein the shock reducing fixation block is arranged between the panel of the water purifier opening cover and the filtration core housing, and bears against the filtration core housing. According to the present invention, the shock reducing fixation block is arranged between the panel of the water purifier opening cover and the filtration core housing, and bears against the filtration core housing, such that the shock reducing fixation block bears against the filtration core housing, and the shaking of the filtration core housing is avoided; when the filtration core housing fixation apparatus is used for the water purifier, the filtration core housing shaking phenomenon cannot be generated; the problem that the existing water purifier filtration core housing fixation structure affects the performance of the water purifier is solved; and when the size of the filtration core housing is changed, only the shock reducing fixation block is required to be replaced so as to fix the filtration core housings with different sizes, such that the problem that the versatility of the existing water purifier filtration core housing fixation structure is poor is effectively solved.

The invention discloses an underground mould bag pile supporting method. The method includes the following steps that (1), pore-forming is conducted by using a drilling machine to form a mold bag hole, an injection pipe is arranged in the mold bag hole, a grouting outlet hole is formed in the injection pipe, the injection pipe is internally provided with a separator, a mold bag is arranged in themiddle rear section of the injection pipe, at least one grouting outlet hole formed in the injection pipe communicates with the mold bag, a draining pipe is arranged between the rear section of the mold bag and the outer wall of the injection pipe, and the front section of the injection pipe includes a segmented mold bag; (2), first grouting equipment is firstly used for injecting first grout intothe injection pipe to make the mold bag be saturated, then second grouting equipment is used for injecting second grout into the injection pipe, and the second grout flows out of the injection pipe from a front grouting outlet hole; and (3), grouting is conducted on the mold bag hole alternately, and grouting is conducted on a mold bag pile I firstly, and then grouting is conducted on a mold bagpile II after a mold bag I expands fully and achieves certain strength until a mold bag pile supporting wall structure is formed. The underground mould bag pile supporting method has the advantages ofbeing good in stress condition, capable of stopping water, capable of effectively controlling excavation subsidence and the like.

The invention provides a double-needle single-shuttle type sewing machine. The double-needle single-shuttle type sewing machine can produce the unique effect of two-in-one chained sewing, has a reinforcing effect and can improve the abrasion-resisting performance of fabric surfaces. The double-needle single-shuttle type sewing machine is characterized in that two sewing needles fixed to a needle rod in the sewing machine are distributed in parallel, and the needle rod is dragged manually or by a motor through a series of gears or cams to perform vertical motion; a swing shuttle hook and a bobbin assembly are arranged at the lower portion of the sewing machine, and a bobbin is located at the center of a swing shuttle and rotates under the drive of a mechanical mechanism to perform synchronous motion with the needle rod. During sewing, two mutually-parallel sewing lines are formed on one surface of a fabric, and the two-in-one chained sewing of one sewing line is formed on the other surface of the fabric.

The invention provides a sealing material for construction. The sealing material for construction is characterized in that the sealing material is composed of the following raw materials by weight: 90-110 parts of a silane modified polymer; 20-40 parts of a plasticizer; 100-150 parts of incremental filler; 0.5-2 parts of a volatile organic solvent; 1-2 parts of a thixotropic agent; 1-2 parts of apenetrant; 0.05-2 parts of a catalyst; 0.5-2 parts of a coupling agent; and 0.03-1 part of a light stabilizer. The silane modified polymer is hydrolyzable alkoxy-terminated polyether or alkoxy-terminated polyurethane; the plasticizer is a phthalate ester compound; the penetrant is selected from a compound with a general formula CnH2n+1Si(OR)3, wherein n=4-16, and R is methyl or ethyl. The sealingmaterial has good penetration bonding effect and a reinforcement effect on a building connection surface layer, and can be widely applied to sealing and waterproofing of prefabricated building abuttedseams.

The invention relates to the technical field of ferrosilicon production, in particular to self-repairing anhydrous stemming which comprises 41-45% of powder, 39-45% of aggregate, 11-14.5% of binding agent, 1.5-1.9% of antioxidant and 0.9-1.4% of plasticizer. The powder comprises silica fume, fly ash and clay, the aggregate comprises anthracite, coke powder, graphite and waste carbon bricks, the binding agent comprises coal tar, phenolic resin, aluminum phosphate and asphalt powder, the antioxidant comprises Al powder, Fe powder and Si powder, and the plasticizer comprises sodium carboxymethylcellulose and polyvinyl alcohol. The self-repairing anhydrous stemming is obtained by adjusting the components and the proportion, can be firmly combined with a furnace hole brick into a whole under the high-temperature condition, automatically repairs the gradually-enlarged furnace hole size, prolongs the repairing period and prolongs the service life of the furnace hole brick while meeting the iron notch plugging function.

The invention discloses a collection device and method based on anti-pollution underground water, and belongs to the technical field of underground water collection devices. The invention discloses the collection device and method based on anti-pollution underground water, the device comprises a pipe body, the top surface of the pipe body is connected with a cable, the outer wall of the upper end of the pipe body is sleeved with a sealing sleeve, the outer wall of the lower end of the pipe body is of an annular structure and is provided with a plurality of placement grooves, the inner wall of the upper end of the pipe body is fixedly provided with a motor, the output end of the motor is connected with an adjusting assembly, by arranging a protection assembly, when the device is placed at a sampling position, the motor is utilized to drive a threaded rod to rotate, so that an adjusting plate is in contact with the bottom surface of a supporting plate, the adjusting plate is of a conical structure, so that the supporting plate is moved out of a placing groove, the supporting plate can support a hole wall, and meanwhile, the separated supporting plate can pull a protective net open to further support and protect; and the hole wall at the collection position is effectively reinforced, the hole wall is prevented from collapsing in the collection process, sample collection is not affected, and the sample collection efficiency is greatly improved.

The invention discloses a device and a method for grouting and reinforcing a secondary casing pipe for a coal seam floor. The device comprises a flange pipe connected with a gate valve and a grouting flange pipe, wherein the flange pipe connected with the gate valve is arranged at the upper part of the grouting flange pipe; the flange pipe connected with the gate valve comprises a flange plate, a hard pipe with threads fixedly connected to the upper end of the flange plate and a casing pipe with threads fixedly connected to the lower end of the flange plate; the grouting flange pipe comprises a flange plate, a casing pipe with threads fixedly connected to the lower end of the flange plate and a grouting hose connection pipe fixedly connected to one side of the casing pipe with threads; the flange plate of the flange pipe connected with the gate valve and the flange plate of the grouting flange pipe are connected with each other through bolts; the hard pipe with threads at the upper end of the flange pipe connected with the gate valve is connected to a choke plug gate valve. The method is characterized by grouting and reinforcing the secondary casing pipe by using the device; the device and the method can be used for effectively reinforcing a gap between an outer casing pipe layer and an inner casing pipe layer; the problems that grout and water are leaked when the grout is injected into the drilled surface and the casing pipe is released in the later period can be solved; the device is convenient to demount after being used and can be repeatedly used.

The invention discloses a system and method for intelligent protection of user accounts in an operating system. On the basis of the operating system with a watchdog process, an implementation processof the method includes: designing an intelligent interception module for intercepting watchdog process or account modifying operations; determining whether the operations intercepted by the intelligent interception module are legal or not; if yes, allowing the operations; if not, rejecting the operations. Compared with the prior art, the system and the method for intelligent protection of the useraccounts in the operating system have advantages that rogue program attack interception can be realized, efficient unknown virus interception effects are achieved, and intelligent classified prevention is realized; by practical identification and application program behavior tracking according to common experience of users, protection of the accounts in the operating system is reinforced so as toprevent modification of the user accounts in the operating system, and high practicality, wide application range and easiness in popularization are realized.

The invention belongs to the technical field of safety doors, and particularly relates to a self-locking safety door. The self-locking safety door comprises a door frame, wherein a door body is arranged in the door frame; hinges are installed on one side of the door frame through bolts; the door body is rotatably connected with the door frame through the hinges; a loudspeaker and a cat eye are arranged on the door body; an unlocking mechanism is arranged on the door body; a first cavity and a second cavity are formed in the door body; an anti-theft mechanism is arranged in the first cavity; first lock holes are formed in the inner wall of the top and the inner wall of one side of the door frame; a sensing mechanism is arranged on the inner wall of the bottom of the first cavity; a gear boxis welded to the inner wall of one side of the second cavity; connecting rods are welded to the inner wall of the top and the inner wall of the bottom of the gear box; and fixing blocks are welded tothe ends, close to each other, of the connecting rods. According to the self-locking safety door, the distance between the self-locking safety door and the door frame is detected through a distance sensor, then a signal is sent to a controller, the controller starts a servo motor, and the automatic locking function is achieved.

The invention discloses a sewage treatment apparatus. The apparatus comprises a bottom plate, a filtering device is fixedly mounted at the left side of the top of the bottom plate, a controller is fixedly mounted at the left side of the filtering device, a conveying device is fixedly mounted at the right side of the filtering device, and a purification device is fixedly mounted at the right side of the top of the bottom plate. The mutual cooperation of the bottom plate, the filtering device, a filter box, a water inlet tube, a dirt discharging tube, a first mounting block, a second mounting block, a first filter plate, a second filter plate, a maintenance door, a handle, the controller, the conveying device, a support plate, a pump body, a conveying tube, the purification device, a purification tank, a motor, a stirring shaft, mixing blades, a water inlet tube, a water discharging tube, a control valve, a medicament tube, a sleeve and activated carbon makes the problems of low speed and high cost of sewage treatment, caused by easy pipeline obstruction and pipeline damages during discharging after filtration of the sewage due to existing sewage treatment apparatus not having the function of filtering large particles and impurities solved.

A high-strength highly-durable drill bit comprises a long and narrow component with a longitudinal axis, a shank capable of being mounted to a rotary machine and a cutting end. The cutting end at least comprises a first cutting edge and a second cutting edge which are symmetrically arranged on two opposite sides of the axis. Each cutting edge comprises a straight chisel edge portion with one end intersected with the axis and an arc cutting connection portion smoothly connected with a main cutting portion and the chisel edge portion. The at least two straight chisel edge portions and two arc connection portion edges are formed on the drill bit, so that centering of the drill bit is enhanced remarkably, chip breaking capability is enhanced remarkably, cutting resistance is lowered, the chisel edge portions are protected, and durability is improved significantly.

The invention provides a construction method for preventing seepage and water leakage of flat and tongue-and-groove type pipelines. The waterproof construction method of external joints of the pipelines includes the following steps that A1, gaps at the external joints of the pipelines are filled with waterproof mortar; A2, the two sides of the external joints of the pipelines are roughened after filling; A3, after roughening is carried out, the waterproof mortar is used for applying plastering belts along the circumference of the pipelines at the roughening parts on both sides of the externaljoints at the external joints of the pipelines; A4, a plastic film is used for covering the plastering belts and the plastering belts are maintained for 2-4 days; and A5, after the plastic film is removed, waterproof sealant caulking is plastered on the plastering belts in the step A4. According to the construction method, the problem of water seepage / leakage at the construction joints of the flattype and the tongue-and-groove type pipelines is well solved, the construction is convenient, the material is simple and easy to obtain, the waterproof effect is remarkable, the cost is low, and theconstruction method has good promotion and use value.

The invention discloses a structure and a method for packaging a blue-green laser chip based on a thin crystal and belongs to the technical field of laser. A thin laser crystal and a thin periodically poled LiNbO4 (PPLN) nonlinear frequency conversion crystal form a compact blue-green laser chip structure, and the periphery of the joints of light pass surfaces are sealed though resins or glue so as to achieve a fixing effect; meanwhile, the upper surface and the lower surface of a chip can be bonded with thermal conductive materials by using thermal conductive adhesives, so that the chip can be fixed further and a good heat dissipation effect is achieved.

The invention belongs to the technical field of precast piles, and particularly relates to a precast pile construction method capable of dissipating foundation soil pore water pressure and preventinga pile body from floating. By changing the stress state of the precast pile in the construction process, an added drainage plate is attached to the pile body of the precast pile and enters a preset stratum along with pile sinking of the precast pile, and construction equipment does not need to be added, then the pore water pressure generated in foundation soil in the precast pile construction process can be effectively dissipated, floating and horizontal displacement generated in the precast pile construction process are effectively controlled, damage to surrounding adjacent buildings, roads and pipelines is avoided, and the influence on the surrounding environment is reduced.

The invention relates to a cooperative ultrasound and ozone wastewater treatment electrochemical device, which comprises a first reactor and a second reactor, wherein a sewage treatment cavity is arranged inside the first reactor; an electrochemical device is arranged in the sewage treatment cavity; the bottom of the first reactor is provided with an ultrasound emitting head array; the bottom of the first reactor is communicated with a peristaltic pump pipeline; a peristaltic pump is arranged on the peristaltic pump pipeline; the peristaltic pump pipeline is connected onto the second reactor; an ozone generation device is arranged in the second reactor. The wastewater treatment device provided by the invention has the advantages that the three kinds of treatment methods of ultrasound, ozone and electrochemistry are combined; the cavitation effect of the ultrasound is cooperative with the ozone, so that the oxidation reaction can be easily taken on the gas-liquid surface; the degradation on harmful matters is enhanced; the wastewater treatment capability is stably improved; the treatment time is shortened; the cost is reduced.

The invention relates to a method for preparing an anti-secondary caries cavity repairing material, which belongs to the field of medical and dental preparations. The prior fluorine-containing anti-secondary caries composite resin caries filling material has the problems of over-quick fluorine dilution, poor interface compatibility and no rigid support to a caries filling body. The method in the invention aims to solve the problems and comprises the following steps: utilizing a silane coupling agent to perform surface modification on nanometer inorganic powder; under a dark condition, uniformly mixing the modified nanometer inorganic powder with monomers of a bisphenol A glycidyl methacrylate class, diluents of a dimethacrylate triethylene-glycol ester class, light triggers of a camphorquinone class, coinitiators of a dimethylamino ethyl methacrylate class and other materials; and removing bubbles under a vacuum condition. The method of the invention has the key point that the nanometer inorganic powder comprises a fluorine-containing zirconium dioxide nanometer tube which takes up 10 to 80 percent of the percent by weight of the nanometer inorganic powder, and the fluorine-containing zirconium dioxide nanometer tube integrates the functions of fluorine slow release of fluorine anti-secondary caries and structure reinforcement.

The invention discloses a syringe lengthening device for dairy cows. The device comprises a base, an actuating part and an injection part. The actuating part is installed above the base, and the frontend of the execution part is provided with the injection part. The base is provided with an actuating rod installation column and an operation rod installation column, and the upper ends of the actuating rod installation column and the operation rod installation column are respectively provided with a hinged through hole. The actuating part comprises an operation rod, a middle rod and two actuating rods, the front end of the operation rod is provided with an installation groove, two sides of the installation groove are provided with two hinged through holes communicating the left and right sides of the operation rod, the bottom of the operation rod is provided with an installation convex, the installation convex is provided with a hinged through hole, the two ends of the middle rod are provided with hinged through holes, and one end and the middle part of the actuating rod are respectively provided with hinged through holes. The operator can press the operation rod once to realize thelong-distance insertion and injection of the syringe with no touching of the syringe directly by hand to inject, thereby avoiding the pricking injury to the operator and ensuring the personal safetyof the operator.

The invention relates to the technical field of metallurgy, and particularly discloses a hot-based spangle-free galvanized steel coil and a production method thereof. A base plate of the hot-based spangle-free galvanized steel coil comprises the chemical components of, in percentage by mass, 0.15%-0.18% of C, less than or equal to 0.1% of Si, 0.67%-0.7% of Mn, less than or equal to 0.02% of P, less than or equal to 0.01% of S, 0.022%-0.04% of Als, 0.009%-0.012% of Nb, 0.003%-0.007% of V, 0.048%-0.06% of Ti, and the balance Fe and inevitable impurities, wherein the weight of a zinc coating ranges from 600 g / m<2> to 620 g / m<2>. The hot-based spangle-free galvanized steel coil has high strength and corrosion resistance, the yield strength reaches 550-600MPa, the tensile strength reaches 635-700MPa, and the ductility is greater than or equal to 18%.