89results about How to "Closed" patented technology

The invention discloses a novel anchoring grouting anchor rod and a construction method thereof. The novel anchoring grouting anchor rod is formed by a grouting system, an anchoring system and a fastening system. The grouting system comprises a cover, a vent hole, a grouting hole, a slurry plug, and overflow holes and various parts work together to ensure that slurry is full and tightly bonded. The anchoring system is formed by anchoring holes, a steel strand, a high-strength spring, an anchor claw, a rotating shaft and a steel strand clamp, initial anchoring force can be provided for the anchor rod, the anchor claw has barbs and rotates under the traction of the steel strand and closely attaches to a surrounding rock, and anchor removal is effectively prevented. The fastening system is formed by an anchor rod body, a slurry stop pad, a tray, a washer and a high-strength nut. After the slurry is solidified, the pre-stress can be provided for the grouting anchor to control the deformation of the surrounding rock. According to the invention, an anchor claw rotation design is employed, the anchor claw closely attaches to the surrounding rock, sufficient anchoring force is provided toprevent the anchor removal, and vent holes are set to ensure a pouring effect. The application defect of an existing grouting anchor is solved, and the novel anchoring grouting anchor rod and the construction method have the advantages of anchor removal prevention, high adaptability and good grouting effect.

A method for preventing electrolyte intake in aluminum ladle is provided, which comprises blocking the port of the suction pipe with a special device before the aluminum suction pipe is inserted into the melt in the electrolytic bath, operating the device to open the port after the suction pipe is inserted into the aluminum electrolyte, and blocking the port again when the suction pipe is extracted from the aluminum electrolyte. A device for implementing the method is also provided, which comprises a ladle and an aluminum suction pipe. The device is characterized in that a blocking plate for blocking the suction pipe and a blocking plate driving unit are arranged in front of the ladle and the aluminum suction pipe, wherein the blocking plate is round or square and works in sliding or turning mode. The device can prevent the electrolyte intake in the aluminum ladle or at least reduce the quantity of electrolyte inlet in the aluminum ladle, and helps to prolong the service life of ladle and mixing furnace and to improve the quality of electrolytic aluminum.

The invention relates to a fireproof structure allowing a pipeline to penetrate a lightgage steel joist gypsum board partition wall and a construction method. The fireproof structure comprises a penetrating hole, rock wool, an added board and fire-resisting sealant, wherein the penetrating hole is formed in the lightgage steel joist gypsum board partition wall and allows the pipeline to penetrate; the position between the outer wall of the pipeline and the penetrating hole is filled with the rock wool; the added board blocks an opening of the penetrating hole and is arranged above the pipeline and fixedly connected with the lightgage steel joist gypsum board partition wall; and the position between the added board and the pipeline is filled with the fire-resisting sealant. The penetrating hole is filled with the rock wool, and the opening is sealed through the added board and blocked through the fire-resisting sealant; gypsum boards are adopted in the added board, so that the fireproof performance of opening blockage can be wholly improved, and the refractory time limit requirement is met; and the opening is densely blocked by the added board, so that the structure is firm. On the basis of meeting the refractory time limit requirement, a large amount of fire-resisting sealant is saved, the problem of non-plasticity of the opening of lightgage steel joist gypsum board partition wall is solved, and the refractory time limit is effectively prolonged.

The invention relates to a construction method for dredging ditch sediments based on a hydraulic punching and filling geotechnical pipe bag and belongs to the technical field of dredging constructionof sediments in stinky water body ditches. The construction method for dredging the ditch sediments based on the hydraulic punching and filling geotechnical pipe bag includes the following steps of temporary storage yard construction, surface cleaning, sectional construction of cofferdam, construction drainage, assembly of a mud conveying pipeline, hydraulic punching and dredging of the sediments,adding medicament, geotechnical pipe bag filling, sludge dewatering and solidification and transportation or reuse of solidified soil. For the construction method, earth excavation is completed withthe help of hydraulic cutting; soil is then filled by a mud pump through the mud conveying pipeline to a large geotechnical pipe bag; in the dredging pipes, dredging mud and the medicament are fully stirred to produce a flocculation group to be precipitated in a geotechnical pipe belt, and then dehydration and solidification treatment of the sediments is achieved. The construction method for dredging the ditch sediments based on the hydraulic punching and filling geotechnical pipe bag has the advantages of continuity, integrated operation of dredging, conveying and filling, low cost, high construction efficiency, sealing property, no secondary pollution during transportation, good environmental protection performance, high construction precision, good effect, convenient operation and savedworking space.

A slow-setting and-expanding filler powder for the engineering grout is proportionally prepared from slags, gypsum and lime through mixing and grinding.

The invention relates to a nucleic acid extraction, amplification and detection integrated mechanical device which comprises a kit, a kit heater, a motor control mechanism, an integrated circuit board and a bar code reader, wherein the kit heater is driven by a motor, and a magnet is wrapped inside the kit heater; the right end part of a screw rod extending outside the body of the kit and the right end part of a pressing plate shaft extending outside the body of the kit are both connected with the motor, and a sampling needle of the kit is controlled by the motor to move transversely and upwards and downwards; and the kit is inserted into an instrument and is recognized and treated through the bar code reader, and analysis results are directly summarized into a computer. All reagents for nucleic acid extraction, amplification and detection are all put into the kit in advance, so that the possibility of pollution can be avoided; a high-concentration PCR (Polymerase Chain Reaction) product is sealed inside the kit, and thus pollution sources are also effectively controlled; the problem of pollution can be solved, so that users can use the device safely, and the problems of space shortage and too high foundation construction cost can be solved; and molecular diagnosis nucleic acid extraction, amplification and detection are integrated, and automation and sealing are achieved.

The invention discloses a polyurethane seal coat comprising the following components in percentage by weight: 30-50 percent of modified fatty acid ester, 5-20 percent of material for absorbing and fixing formaldehyde, 1-10 percent of cellulose acetate, 0.01-2 percent of addition agent and 20-50 percent of solvent. The modified fatty acid ester is alkyd and / or acrylics. The polyurethane seal coat is applied to coating furniture, has seal effect and can effectively prevent base material from absorbing moisture and going moldy. The formaldehyde in the base material releases slowly and is also removed, thereby having no damage to human bodies. Meanwhile, the seal coat also has the effects of a common seal coat and is very simple and applicable without adding product varieties and construction steps.

The invention relates to the technical field of buildings, in particular to a coating system with reinforced concrete pursuit performance, and anti-corrosion application of the coating system, and more particularly relates to coating protection application of a concrete structure of ocean engineering. A coating sequentially comprises permeable epoxy resin seal primer, solvent-free epoxy resin putty, polyether-modified epoxy resin high-tenacity intermediate coat and elastic polyurethane top coat. The anti-corrosion application of the coating with the reinforced concrete surface pursuit performance is completed through six processes; and the coating with the reinforced concrete pursuit performance not only has excellent mechanical properties such as the good pursuit performance, high tensilestrength and matrix cracking prevention, but also has excellent protection properties of alkali resistance, aging resistance and chloride ion penetration resistance, the characteristics of short period and easy operation are achieved in the construction process, and a method is an effective method convenient to implement on site and capable of prolonging the life of the concrete structure.

The invention relates an isolation blocking technology for pollutants under a mine and an isolation technology for the pollutants in an underground space of a mine area, in particular to the technicalfield of isolation treatment of manually-dumped pollutant sites of roadways and goafs. During treatment of the pollutants in a downhole roadway and a goaf, the pollutants need to be isolated firstly.Underground spaces of the roadway and the goaf are large, a large amount of cement grout is prone to flow away, grouting top filling is difficult to form, the blocking effect is difficult to achieve,and mixing of the grout and the pollutants further causes the defects of large pollution treatment difficulty and high cost. The invention provides a novel roadway and goaf grouting technology, and the novel roadway and goaf grouting technology comprises the construction processes that common grouting holes (also serving as roadway and goaf exploration holes) are constructed, goaf or roadway grouting holes are constructed, floral tubes are put downward and stone is put in, and grouting is conducted. Compared with a traditional grouting technology, the novel roadway and goaf grouting technology has the advantage of small use amount of the cement grout and aggregate and further has the advantages that the grouting influence radius is small, top filling can be achieved, and impermeability ishigh.

The invention discloses a pipeline internal water seepage plugging device and a construction method of the pipeline internal water seepage plugging device. The pipeline internal water seepage plugging device comprises an air bag. The air bag is provided with an air inlet, a feeding opening and a discharging opening. The air inlet is connected with an inflation device. The feeding opening is connected with a pressure grouting device. The discharging opening is connected with the feeding opening through a grouting pipeline. The discharging opening is arranged on the side wall of the air bag. The two ends of the air bag are provided with traction devices. The air bag is made of high-temperature-resistant rubber pipe materials. The thicknesses of the air bag are not identical. The wall thickness at the discharging opening is larger than that at other positions. The two ends of the air bag are fixedly provided with gaskets through nuts. The outer walls of the two ends of the inflated air bag can be attached to a pipeline to be repaired in a sealed manner so that a sealed cavity can be formed in the middle of the air bag. By the adoption of the pipeline internal water seepage plugging device, grouting can be conducted inside the pipeline of any diameter, and therefore the problem that water seepage inside the pipeline cannot be plugged is solved.

The invention relates to a cast-in-place concrete floor punching pipe seal template device and a using method. The device comprises angle steel frames (3), wooden templates (5) and a round steel pulling rod (4). The device is characterized in that the two angle steel frames (3) are oppositely arranged, two ends of the angle steel frames (3) are connected with each other through the round steel pulling rod (4), the wooden templates (5) are boards with semicircle notches, the two wooden templates (5) which are horizontally arranged in a butt joint mode are clamped between the two angle steel frames (3), the wooden templates (5) are clamped and fixed at the lower end of a concrete reserved hole through the angle steel frames (3), and the wooden templates can be disassembled to be used circularly after being used. The cast-in-place concrete floor punching pipe seal template device is simple in structure, convenient to install, applicable to seal cast concrete of pipes with different diameters, quick to disassemble and capable of being used circularly.

The invention discloses a leakage-proof sandwich thermal insulation concrete outer wall board based on horizontal joints and vertical joints. The outer wall board comprises reinforced concrete and an extruded polystyrene board; the extruded polystyrene board is arranged between an outer reinforced concrete leaf and an inner reinforced concrete leaf, rabbets are formed in the periphery of the outer reinforced concrete leaf, a joint is arranged between two adjacent rabbets, and is filled with rubber strips, and the outer portion of the joint is blocked by waterproof seal gum compatible with concrete; the rabbets are arranged and are in lap joint, connection of the outer wall board is facilitated, the joint is arranged between the rabbets, according to blockage between the joints, the rubber strips are plugged into the rabbets, the waterproof seal gum is used for blockage, the lap joint positions of the rabbets have the good seal performance, the phenomenon that in a traditional steel structure residence outer wall maintaining structure, the mounting and contact portions of steel beams and steel columns with brickwork or strip plates are not tight in blockage and are likely to generate cracks is avoided, and the phenomenon that a masonry wall is subject to plastering, and the pasted extruded polystyrene board is prone to falling is avoided.

The invention discloses a casting melting device with a splash-proof component. The device comprises a heat-insulating furnace body, a crucible is placed in the furnace body, a heating piece is fixedly arranged on the inner wall of the furnace body, a cover plate is placed at the top of the furnace body, the splash-proof component for feeding is fixedly arranged at the middle end of the top of the cover plate, a movable assembly is arranged between the cover plate and the furnace body, the relative displacement of the cover plate and the furnace body is changed, and a discharging mechanism is arranged between the crucible and the furnace body; and the furnace body made of the heat insulation material can reduce outward loss of heat, so that the influence of the heat on the surrounding environment is reduced, in addition, the feeding safety can be improved by arranging the splash-proof component, molten metal cannot be splashed out and intercepted in the furnace body under the shielding of the splash-proof component, meanwhile, the splash-proof component has certain sealing performance, the heat loss can be prevented in a molten state, heat loss can be prevented in time under the feeding condition, and the high-temperature influence in the feeding process is reduced.

The invention discloses an image boundary extraction method based on moving squares. The method comprises the following steps of: (1) converting an image to a Lab color space, dividing a color value range into n areas according to an L component, giving a corresponding number to each area, and converting each pixel value of the image into the number of the area which corresponds to the original color value of the pixel; (2) establishing the squares through each four pixels which are adjacent to one another according to the L component, and segmenting each square by dividing segments, wherein the vertexes with the same number in the squares are positioned in the same area, and the endpoints of the dividing segments are positioned in the centers of the sides of the squares; and (3) connecting the dividing segments with intersections to form parting lines for any two connected squares, wherein the parting lines and the outer edge of the image form the image boundary. The method can be used for completing image boundary extraction at a time, and is higher in efficiency and speed.

Disclosed are a die and method for manufacturing an inner and outer pipe workpiece with separation ribs in the middle through an extrusion method. The die comprises a male die body and a female die body which are vertically and coaxially arranged. The top end of the male die body is fixed to the lower portion of an upper die plate, and the female die body is fixed to the upper portion of a lower die plate. An ejector rod is arranged in a through hole in the middle of the lower die plate in a sliding manner. The convenient extrusion method is provided under the condition that the heights of an inner pipe, an outer pipe and separation ribs are different, and the die is novel and unique in design. The surface of a product is free of weld joints, and the die can adapt to places with high requirements for strength. The die is easy to machine and low in manufacturing cost. In the extrusion process, work stress is low, the tonnage of needed equipment is low, the die is not prone to being damaged, economical benefits are high, and cross sections of extrusion parts do not need to be consistent. Along with rapid development of the industry, the application range of the inner and outer pipe workpiece with the separation ribs of this kind is wider and wider, and the extrusion moulding method and the die structure have the great application prospect in industrial production.

The invention discloses an upward-core-outputting enclosed electronic cigarette atomizer and a disposable liquid storage bottle component. The atomizer comprises the disposable liquid storage bottle component and a top cover assembly in sealing connection with the liquid storage bottle component, and the top cover assembly further comprises a cigarette holder, a liquid storage bottle cover, a connection electrode, an upper sucking-out pipe and an upper air-in pipe; the disposable liquid storage bottle component is provided with a liquid storage bottle body, the liquid storage bottle body is internally and coaxially provided with a leakage-proof sleeve, and the leakage-proof sleeve is provided with an atomizing device, a lower sucking-out pipe and a lower air-in pipe in an inserted mode. The upper sucking-out pipe and the upper air-in pipe of the top cover assembly are in sealing butt joint with the lower sucking-out pipe and the lower air-in pipe of the disposable liquid storage bottle component.

The invention discloses a single-component air-drying water-based sealing agent for woodware. Polyhydric alcohols and an isocyanate monomer are mixed for a reaction for a period of time, a certain amount of acetone and dimethylolpropionic acid are added for a continuous reaction for a period of time; BDO and HEA are added for a reaction for a period of time, and then cooling is performed; triethylamine is added for neutralization, water is added for dispersion, acetone is removed, and a waterborne polyurethane dispersion is obtained; the waterborne polyurethane dispersion and an acrylic monomer are copolymerized to obtain acrylic acid-polyurethane mixed emulsion. The acrylic acid-polyurethane mixed emulsion prepared through the method has the dense film formation effect, the surface of wood can be well wrapped, and the phenomenon that the surface of a paint film is damaged due to the fact that much water in water paint is absorbed and serious base material rib expansion is caused is avoided. Meanwhile, on the basis of reasonable auxiliaries, finally, when paint is used on the surface of wood, the problems that wood rib expansion damage is caused and oil leakage and color changing are caused can be effectively avoided.

The invention discloses a method for installing an isolation fence. The method comprises upright columns and the isolation fence, and is characterized by comprising the steps of performing measurementand lofting, excavating concrete foundations, burying the upright columns and installing the isolation fence. The method for installing the isolation fence according to the invention has the beneficial effects of saving the time cost, saving the labor cost particularly for a mechanism relating to perimeter length, enabling the installation position of the isolation fence to meet the requirements,enabling an overall installation line shape to be smooth and to coordinate with terrain, enabling the enclosure to be tight and enabling the installation to be firm.

The invention discloses a full-automatic full-closed multi-target nucleic acid detection device. The full-automatic full-closed multi-target nucleic acid detection device comprises a card box, a cardbox heater, a transmission structure and a barcode reader, wherein the card box comprises a box body; a sample inlet is formed in the top of the box body, a seal cover is arranged at the sample inlet,and the seal cover and the box body are in magnetic adsorption through a magnetic part; the bottom of the box body is provided with a sample pool, a reagent bin and a hybrid tank; a chip is arrangedat the bottom of the hybrid tank, and is provided with a detection probe which can be specifically hybridized with a PCR product; a sampling needle is arranged in the box body; the card box heater isprovided with a nucleic acid extraction magnet; the transmission structure is used for controlling the sampling needle to move in the box body; the card box is inserted into an instrument and is identified through the barcode reader, and analysis results are directly gathered into a computer. The technical scheme aims at realizing extraction, amplification and detection into a whole, is full automatic, full closed and pollution-proof, and enables the connection of the seal cover to be firm.

The invention discloses a wave blocking device for explosive welding air impact waves. The wave blocking device comprises a semispherical steel container (2) fixed and reinforced by backfill soil, wherein reinforcing rib plates (1) are arranged vertically and transversely on the outer part of the container in a crossed manner; one side of the lower part of the container is connected with a barrel-shaped wave blocking device exiting and entering channel (6) and an exiting and entering door is additionally arranged; a smoke exhausting opening (3) is formed in the top of the container; a water bag (5) for completely covering the smoke exhausting opening is arranged on the smoke exhausting opening by arranging a covering object supporting frame (4). According to the wave blocking device, the water bag at the top of the smoke exhausting opening of an air wave blocking device is additionally arranged to cover, so that an influence range of the air impact waves caused by explosive welding is reduced effectively and the strength of the air impact waves is weakened obviously; the influences on people, buildings and the like in a certain range of the periphery by the explosive welding are controlled in a safe range; meanwhile, the influences of smoke dust and harmful gas, caused by explosion, are reduced by breaking and scattering the water bag under the effect of the impact waves, so that the aim of green and environment-friendly explosive machining is realized.

The invention provides a universal protective seal plug for a pipe hole. The universal protective seal plug for the pipe hole comprises two sets of plugging modules which are formed by being assembled in a cross-overlap mode; each plugging module is a semicircular cylinder, and the plugging modules are assembled in a butt-joint mode to form a cylindrical structure used for plugging. Sub-rings with different specifications are contained in the plugging modules and connected in a sleeving mode. When needing to plug a cable with a certain specification, the cable installation personnel only need to find out the sub-ring corresponding to the specification of the cable and then cut the connecting portion, on the inward side, of the sub-ring. The semicircular annular thin layer connecting structures among the sub-rings can be cut quickly and conveniently. Only one ends of the separated sub-rings which are connected in an overlapping mode need to be connected, and when plugging is performed, the close connection among the sub-rings can be achieved due to the existence of the connecting portions. By adopting the universal protective seal plug for the pipe hole, construction can be performed only needing to cut one end of the connecting portion and without needing to cut two ends or even the side face structure of the whole seal plug, and operation is easy and convenient.

The invention provides a method for preparing positive ion composite modified asphalt. The method comprises the steps that firstly, asphalt is heated to 60 DEG C to 100 DEG C, a surface active agent is added into the asphalt, the mixture is stirred for 10 min to 30 min, and modified asphalt is obtained; water is heated to 40 DEG C to 60 DEG C, then a modifier, a blender and an emulgator are sequentially added into the water, and a mixed soap solution is obtained after the mixture is stirred for 5 min to 10 min; the modified asphalt and the mixed soap solution are mixed and mechanically stirred for 30 min to 40 min, the stirring temperature ranges from 80 DEG C to 100 DEG C, the mixture is cooled to 20 DEG C to 25 DEG C after being stirred to be uniform, and the positive ion composite modified asphalt is obtained. According to the method, the raw materials are easy to obtain, the preparation process is simple, pavement performance is good, and all technical indexes are obviously superior to those of common emulsified modified asphalt.

The invention discloses a special substrate sealing agent for dyed veneers. The special substrate sealing agent comprises a main agent, a curing agent and a diluent. The main agent is composed of thefollowing raw materials in parts by weight: 50-70 parts of acrylic resin, 1 to 3 parts of methyl isobutyl ketone, 5 to 12 parts of butyl acetate, 0.1 to 1 part of a titanate coupling agent, 1-2 partsof barium sulfate, 0.1 to 0.5 part of a wetting agent, 0.3 to 1 part of a leveling agent, 0.3 to 1 part of an antifoaming agent, 2-4 parts of a light stabilizer, 0.4 to 1 part of a drier, 7 to 10 parts of butyl acetate and 15 to 20 parts of ethyl acetate. The curing agent is composed of the following raw materials in parts by weight: 60-70 parts of butyl acetate and 30 to 40 parts of an HDI tripolymer. The diluent is composed of the following raw materials in parts by weight: 40-50 parts of butyl acetate and 50-60 parts of propylene glycol methyl ether acetate. The special substrate sealing agent for the dyed veneers has extremely strong sealing property on grease in wood, and can effectively prevent the grease of the dyed veneers from seeping out.

The invention discloses a train communication management method of a TACS system. The method comprises the steps that a train establishes communication with an ATS and an RMC in a communication area; the RMC registers and tracks a communication train in a communication area of the RMC; the RMC plans reserved path resources according to the route requests and path planning of the multiple trains; the RMC tracks the position of each train in the communication area in real time, searches forward from the position of the head of the current train in the route running direction based on a planned path, searches an adjacent front train, informs the front train information in combination with an adjacent area, judges the front train needing to establish communication with the current train for the current train, and informs the VOBC of the current train of the ID of the front train; and when the train VOBC receives the front train which is identified by the RMC in an auxiliary manner and needs to establish communication, the train VOBC determines the situation and establishes communication with the unique front train. According to the invention, direct communication between vehicles and real-time interaction of main operation information are realized.

The invention discloses an essential oil refreshing moisturizing body lotion and a preparation method thereof. The body lotion comprises, by mass, 5-8 parts of aloe essence, 2-3 parts of milk, 0.8-1.3parts of rose essential oil, 0.2-0.3 part of avocado oil, 0.8-1.2 parts of hydrogenated lanolin, 0.5-0.8 part of oat kernel powder, 1-1.5 parts of avocado extract, 0.7-1.2 parts of nicotinamide, 2-3parts of petrolatum and 28-32 parts of deionized water. The rose essential oil in the lotion can effectively lighten spots, promote the decomposition of melanin and improve the dryness of the skin; the milk, the olive oil, the avocado oil, the hydrogenated lanolin, the avocado extract and the petrolatum can effectively improve the oily substances contained in the body lotion, strengthen the moisturizing capability of the skin, and moisturize the damaged skin; the oat kernel powder can improve the water content of the skin, has the oil absorption effect and does not produce a thick greasy feeling.

The invention relates to a reflective heat-insulation primer-topcoat integrated exterior wall coating and a preparation method thereof. The coating is prepared from the following raw materials: water, a pH regulator, hydroxyethyl cellulose, a primer emulsion, a topcoat emulsion, a preservative, a wetting dispersant, a defoaming agent, titanium dioxide, mica powder, reflective heat-insulation titanium dioxide, an antifreeze agent and a thickening agent. According to the invention, various emulsions and assistants are screened and dosages and proportions are researched, so that the reflective heat-insulation primer-topcoat integrated exterior wall coating is developed, and the reflective heat-insulation primer-topcoat integrated exterior wall coating has the sealing property of a primer, the aging resistance of a topcoat and the reflective heat-insulation effect at the same time.

The invention relates to the technical field of the cation modified asphalt for drilling fluid and the preparation method of the cation modified asphalt, in particular to a kind of cation modified asphalt and a preparation method thereof. The cation modified asphalt comprises the following components in parts by weight: 20-40 parts of asphalt, 3-10 parts of surfactant, 5-50 parts of modifier and the balance mineral oil. Compared with the prior art, the cation modified asphalt has the beneficial effects that the plugging of mud shale stratum with tiny cracks is better, the absorption capability of the cation modified asphalt on the surface of mud shale is stronger, an impervious interlayer can be formed on the well wall, and the drilling fluid filtrate is prevented from being permeated into the stratum, thereby reducing filtration loss amount and preventing the well wall from collapse.

The invention discloses an anti-deviation self-locking fine-adjustment type municipal engineering piling device which comprises a piling vehicle body provided with a piling mechanism and a separated pile body fixing guide vehicle arranged on one side of the piling vehicle body and comprising a guide vehicle body and a clamping device arranged on the guide vehicle body. The invention belongs to the technical field of municipal engineering construction, and particularly provides an anti-deviation self-locking fine-adjustment type municipal engineering piling device which creatively introduces the Pascal's law into the piling device to solve the problem that the piling angle is inclined due to inclination of a vehicle body, and a Pascal anti-eccentric piling intermediary transfer device is arranged, so that the anti-deviation self-locking fine-adjustment type municipal engineering piling device has the advantages that the anti-deviation self-locking fine-adjustment type municipal engineering piling device is provided; oblique hammering force generated by a pile driving device is converted into vertical hammering force, it is guaranteed that vertical hammering can be achieved no matter what angle force is applied, the integrally-arranged clamping and positioning device is cut into a plurality of elastic self-adjusting clamping rods, and through static friction force between a pile body fine adjustment steel ball and a pile body, the pile body fine adjustment steel ball and the pile body fine adjustment steel ball are adjusted. The technical effect that clamping is needed and cannot be achieved is achieved.

The invention discloses a closed torch system. The system comprises a mounting foundation. A fixing platform is located above the mounting foundation and connected with the mounting foundation througha vertical column. One end of an exhaust pipe is used for being connected with a to-be-burnt gas source, and the other end of the exhaust pipe penetrates through the fixing platform and stretches above the fixing platform. A torch burner is located above the fixing platform and connected with the exhaust pipe. According to the system, the problem that gas with standard requirement moderate toxicity is not easily treated by a closed ground torch in the prior art is solved. According to the system, an exhaust outlet of exhaust gas is away from the ground, and the safety can be guaranteed as anexhaust point is away from the ground. The characteristics of an overhead torch and a ground torch are combined by a torch, and the beneficial effects of the two torches are integrated by the torch. The functions which cannot be achieved by the two torches respectively can be achieved. The working condition which cannot be achieved by the two torches in the existing industry respectively is achieved. The requirements of safety and environmental protection are well met.

The invention relates to a composite leakage-proof reinforcing sheet and a preparation method thereof, and belongs to the technical field of medical materials. The composite leakage-proof reinforcingsheet comprises a middle layer, the middle layer is a chitosan film, a chitosan sponge body or a chitosan non-woven fabric, polylactic acid-glycolic acid polymer non-woven fabric layers are formed onthe upper surface and the lower surface of the middle layer through a melt-blowing method, and the middle layer expands to form gel after absorbing body fluid to block gaps so as to avoid liquid diffusion and leakage. According to the reinforcing sheet, the action period of chitosan is prolonged, diffusion and permeation of water molecules in a product can be continuously accelerated, a wet environment is provided for growth of cells in a spatial network of a material, and the problem that the degradation and absorption time is too long due to non-hydrophilicity of PLGA is also solved.