49results about How to "Simple and safe construction" patented technology

The invention relates to a water-based organic silicon waterproof agent by taking sodium methylsilanolate as a main raw material, and is particularly suitable for moving penetration waterproof processing of a porous structure, such as bricks, stone materials, concrete, mortar, cement slurry and the like.

The invention relates to a water-emulsion organic silicon waterproof agent by taking alkylalkoxy silane as a main raw material, and is particularly suitable for moving penetration waterproof processing of a porous structure, such as bricks, stone materials, concrete, mortar, cement slurry and the like.

The invention discloses a solvent-type organic silicon stone protectant and a preparation method thereof. The protectant is characterized by comprising the following polymer monomers by volume percent: at least one alkyl alkoxy silane of which the adding volume accounts for 1% to 10% of the total volume of the polymers, at least one polymethylhydrosiloxane of which the adding volume accounts for 1% to 10% of the total volume of the polymers, at least one titanate catalyst of which the adding volume accounts for 0.05% to 1% of the total volume of the polymers, and at least one solvent oil-type organic solvent of which the adding volume accounts for 79% to 97.95% of the total volume of the polymers. The preparation method comprises the following steps: evenly mixing the alkyl alkoxy silane and the polymethylhydrosiloxane in proportion in partial organic solvents at a room temperature; then carrying out a catalytic reaction by adding the catalyst; and finally, adding the organic solvent and diluting to reach a certain concentration. The protectant which has good permeability can be used for deeply protecting stone and is good in air permeability and recoatability. The protectant is simple in preparation method, simple and convenient to coat as well as relatively low in cost, thereby being suitable for industrial mass production.

The invention discloses a drilling and blasting machine which comprises a connecting base, a drilling machine, a static blasting machine, a fixing frame, a rotating mechanism, a lifting mechanism and a positioning mechanism, wherein one end of the rotating mechanism is connected with the connecting base and the other end of the rotating mechanism is connected with the lifting mechanism; the lifting mechanism is connected with the drilling machine; the drilling machine and the static blasting machine are arranged at the two ends of the fixing frame oppositely; the positioning mechanism is arranged at the bottom of the rotating mechanism. The drilling and blasting machine provided by the invention integrates the drilling machine with the static blasting machine; the drilling machine can drill quickly, can drill at various angles, especially for hard objects, such as rocks, mountains and the like, can drill at different positions and angles; the drilling and blasting machine is provided with the static blasting machine in the same set of hydraulic system, the static blasting machine is implanted after the surface is drilled, and crushing operation is finished silently and statically.

A technique for testing oil in the process of reconnoiters oil field, the working procedures are: perforation, test, pumping and acidification which is the improvement, that can be achieved the four procedures by only one time pipe column which protect oil layer, save fund and quicken the speed of testing oil. In economy benefit, compare with others, it can save 150,000 Yuan and shorten 5 days in one layer each testing oil period, and suit for construct on both land and sea.

The present invention discloses a paint, and especially relates to an environment-friendly multifunctional waterproof paint. The paint is prepared from the following raw materials in parts by weight: 5-10 of polyvinyl acetate, 60-70 of chloroprene rubber, 10-20 of aluminum paste, 0.1-1 of zinc oxide, 25-35 of ethene-vinyl acetate emulsion, 0.5-1.5 of dibutyl phthalate, 1-5 of light calcium carbonate. The invention is advantageous in that: the utilization of the invention is simple, working hours and labor are saved, the invention does not induce environment pollution, the invention is not harmful to human body, peeling does not occur after the paint of the invention is used, the film forming effect is good, the solidification is fast, the invention is resistant to ageing, the binding power is strong, the extensibility of the material is good, a waterproof layer is formed on the base surface of materials being painted so that the painted materials are super waterproof. Furthermore, when the paint is applied to outer wall decoration, not only the effects of heat insulation and good decoration but also the impervious, waterproof and nontoxic effects can be achieved. Therefore the paint can be widely applied to the water prevention of roofing and out walls, toilets, gardens on top of buildings, floors, basements, subterranean tunnels, pools and water channels.

The invention provides epoxy seam gum and a preparation method thereof. The epoxy seam gum provided by the invention is prepared from raw materials with specific components and usage, has a strong bonding force for a gypsum board, marble, cement, wood and various metal materials and no yellowing and can be used for a long time. The epoxy seam gum adopts a complex rheological modification system and has the advantages of moderate viscous resistance in allocating, batch scratching and reforming processes, no sagging, excellent construction property and high construction efficiency; the epoxy seam gum can be used after a component A and a component B are uniformly mixed according to the proportions; during construction, the epoxy seam gum is convenient to allocate and simple in metering; the method disclosed by the invention is simple in process and suitable for large-scale production; comprehensive performance of the epoxy seam gum can be effectively guaranteed.

The present invention discloses a method for reduction of beam section height by use of unbonded steel strand prestress, the method comprises reduction of the beam section height by use of external prestress and reduction of the beam section height by use of internal prestress, when the number of desired steel strands is not more than 6, or the number of desired steel strands is more than 6, but anchoring of both ends can be treated, an external prestress method is used; and when the number of the desired steel strands is greater, and anchoring of ends of the steel strands cannot be treated, an internal prestress method is used. The method is simple in construction, uninstall and additional arrangement of a temporary support are not needed, construction period is short, cost is low, an upper structure is not affected, and the method has the advantages that service life is synchronous with that of an original structure.

The invention discloses a novel steel structure anchor increasing and grouting uplift pile and a construction method thereof. The novel steel structure anchor increasing and grouting uplift pile is composed of a pile body and anchor increasing deformation devices. The pile body is composed of a steel pipe shaft, a tapered pile tip, anchor increasing deformation holes, sliding rails, T-shaped steelstiffening plates and a protective pile cap. The anchor increasing deformation holes are a plurality of rectangular openings formed in the pile body and provide deformation channels for the anchor increasing deformation devices, and the T-shaped steel stiffening plates are welded to the two sides of the anchor increasing deformation holes to improve pile strength. The anchor increasing deformation devices are composed of upper rotating shafts, lower sliding shafts, rotating arms, connecting boxes, connecting bearings, reinforcing caps, sliding threaded sleeves and threaded rods. After the pile body penetrates into the ground, the threaded rods are rotated to drive the sliding threaded sleeved to move upwards, the connecting boxes and the reinforcing caps are squeezed into soil around thepile body through the transmission function of the bearings and the rotating arms to enhance the uplift resistance of the pile body. The novel steel structure anchor increasing and grouting uplift pile and the construction method thereof solve the defects of low strength, insufficient uplift force and complex construction of a pile body of an existing uplift pile, and has a broad application prospect.

The invention discloses a water-based self-luminous reflective marking coating for rain night. The water-based self-luminous reflective marking coating comprises a component A and a component B. The component A is a coating matrix, and the component B comprises high-reflection reflective beads used for being spread on the surface of the coating matrix. The coating matrix comprises the following components in parts by mass: 25-50 parts of water-based film-forming resin, 25-50 parts of pigment and filler, 5-20 parts of glass beads, 1-10 parts of an auxiliary agent and 1-10 parts of water. The marking paint is safe and environment-friendly, and has good wear resistance, weather resistance, rainwater resistance, acid and alkali resistance and good reflective property and luminous effect. The invention also discloses a preparation method of the marking paint, a road marking and a construction method of the road marking.

The invention discloses a skid resistance device for fractured rock mass. The stability of an entire slope is improved by improving the shear strength of the device, the material consumption and the time consumption for piling are low, the device is unlikely to crack per se, the application condition is wide, the landslip state is unlikely to deteriorate, and the construction is safe, easy and convenient. The skid resistance device for the fractured rock mass comprises a plurality of grouting anti-skid piles, wherein each grouting anti-skid pile comprises a tower-section stone column and an anti-shear component; the anti-shear component comprises a seamless steel pipe and a high-strength anti-shear steel column; base rock is positioned below the fractured rock mass; the seamless steel pipe is inserted into the base rock through the fractured rock mass; the high-strength anti-shear steel column is attached to the seamless steel pipe; a part of the high-strength anti-shear steel column is positioned in the base rock, and the other part of the high-strength anti-shear steel column is positioned in the fractured rock mass; the tower-section stone column formed through multi-section filling, compacting and grouting is partially exposed out of the fractured rock mass or is completely positioned in the fractured rock mass. The invention also provides a construction method of the skid resistance device.

A system and method for determining rotor shaft position of high voltage permanent magnet AC synchronous machines using auxiliary windings utilizes a permanent magnet AC synchronous motor including a stator having a main set of coils and an auxiliary set of coils. A drive controller including a digital signal processor in communication with the motor utilizes a current and voltage measurements from the main and auxiliary coils to determine the position of the rotor shaft in a sensorless mode.

The invention discloses an interior wall self heat-insulation building block. According to specific steps, attapulgite is soaked in water for use; an SCQ animal protein cement concrete foaming agent and water are mixed and made into foam through a foam machine; silicate 425 cement, ultrafine fly ash, II-grade fly ash, I-grade fly ash, quick hardening cement, calcium stearate, an expanding agent, sodium chloride, triethanolamine, polypropylene fibers, basalt fibers and the soaked attapulgite are added into water, mixed and stirred for 2 minutes, then the prepared foam is added and stirred for 10s, then hydrogen peroxide with the mass concentration of 5% is added, after 10s, and the formed paste is poured into a mold and is foamed and shaped in the mold to form a building block; and the surface of the building block is covered with plastic cloth, and after curing and drying, the foamed concrete self heat-insulation interior wall building block is obtained. The building block has the advantages that the process is simple, material blending is scientific and reasonable, the foaming agent has a good foaming effect, pores are uniform, and the product has excellent compressive strength and is suitable for a thermal-insulating interior wall.

The invention relates to an anti-slide pile with an I-shaped cross section. The anti-slide pile with the I-shaped cross section is poured by reinforced concrete. Transverse width at the rear end of the anti-slide pile is larger than that of a common anti-slide pile with a rectangular cross section, so that post-pile soil arch effects are brought into full play, pile center distance between two adjacent anti-slide pile can be increased when the anti-slide piles are disposed on a plane, and the amount of the required anti-slide piles is reduced under the same landslide conditions to reduce cost. The rear end and the front end of the anti-slide pile are arc-shaped, stress concentration damaging the anti-slide pile is prevented from being generated at tips. The anti-slide pile can bear large slope pushing force has good bending resistance. The cross section area of the anti-slide pile is remarkably smaller that of the anti-slide pile with the rectangular cross section, so that concrete quantity and rebar quantity needed are reduced greatly, a large amount of concrete and rebar is saved, and cost is lowered. The anti-slide pile is small in construction section and simple and safe in construction, has promising popularization application prospect and facilitates mechanical construction.