31results about How to "Construction safety" patented technology

The application discloses a kind of millisecond blasting initiation interval determination method, device and system.Compared with prior art, according to actual working condition, single-hole blasting test is carried out, and the measured vibration data of multiple monitoring points are obtained, then the frequency domain distribution is obtained by Fourier transform, the most dangerous monitoring point is determined according to the frequency domain distribution of each monitoring point and its measured vibration velocity and control vibration velocity, and the initiation interval is determined according to the measured vibration data of the most dangerous monitoring point, so that the vibration velocity is effectively controlled, and the construction is safer.Secondly, by adjusting the initiation interval in real time, the vibration velocity is less than the control vibration velocity, which further ensures the safety of blasting construction.

This invention discloses a rapid construction method for large-section steel linings at multiple elevations in hydropower stations, belonging to the field of water conservancy and hydropower engineering construction technology. It aims to solve the problems of poor accessibility and high transportation risks on temporary roads leading to dams, and the limited lifting capacity of cable cranes due to civil engineering work, resulting in low installation efficiency and difficulty in ensuring the construction period. This invention manufactures individual sections of the steel lining downstream of the dam, assembles them, and then uses a gantry crane to hoist them onto a track-mounted electric flatcar, which is then horizontally transported to the dam base along a dedicated track. At the installation elevation, a modular cantilevered fixed gantry crane is assembled. This gantry crane has no trolley traveling mechanism; its legs directly rest on the dam body, allowing for rapid installation, disassembly, and reuse. The gantry crane vertically lifts the steel lining to the installation elevation, and then uses an omnidirectional hydraulic transfer trolley to precisely transport it to the work position, where the installation gantry crane completes the assembly. The gantry crane can be disassembled and transported to the next elevation for reuse. This invention eliminates reliance on temporary roads and cable cranes, features tight process connections, and uses versatile and reusable equipment, improving construction safety and efficiency, and is suitable for continuous construction at multiple elevations of dams.

The utility model provides a hoop of a climbing device. The hoop of the climbing device comprises a three-section integrated hoop, an opening and closing oil cylinder and a locking device, the three-petal integrated hoop is mainly composed of a module A, a module B and a module C. The module B and the module C are hinged to the module A respectively. The cylinder body end of the opening and closing oil cylinder is hinged to the module A, the telescopic end of the opening and closing oil cylinder is hinged to the module B and the module C, and the opening and closing oil cylinder is used for driving the module B and the module C to rotate around the hinge point so as to achieve opening or closing of the three-petal integrated hoop. And the locking device is used for carrying out secondary locking on the module B and the module C. The three-section integrated design is adopted, disassembly is not needed, the whole body is close to a pier column, opening and closing are automatically controlled by the opening and closing oil cylinder to surround the pier column or be separated from the pier column, assembly and disassembly are convenient, safe and efficient construction of a capping beam can be achieved, and meanwhile the device has the advantages of being high in automation degree, simple in structure and the like.

The application provides a high-efficiency vertical soil conveying system and a construction method thereof, comprising a wire laying unit arranged on a fixing frame, two steel wires are oppositely arranged on the two sides of the wire laying unit, the arrangement directions of the two steel wires are opposite, the steel wires on the two sides are respectively connected with a first grab bucket and a second grab bucket through pulleys, and a first motor and a speed reducer for driving are arranged on the outer side of the wire laying unit. The application has the advantages of ingenious design, compact structure, high efficiency of vertical soil conveying, safety and stability of construction, switching between multiple modes according to needs, and good economic benefits.

This utility model relates to a single-sided formwork structure for a parapet wall, comprising a floor deck, a bottom edge sealing plate connected between the floor deck and the frame steel beam, a top edge sealing plate connected to the top of the floor deck, steel stiffening ribs for longitudinal reinforcement inside the floor deck, and an internal formwork system. The internal formwork system includes a template, back ribs and uprights connecting the outside of the template, tie rods, and outriggers. The bottom edge sealing plate is vertically connected to the floor slab, and the floor deck is fixedly connected to the bottom and top edge sealing plates, with the bottom of the floor deck anchored within the parapet wall's upturned structure. Several steel stiffening ribs are longitudinally arranged inside the parapet wall, and these ribs are fixedly connected to the bottom chord reinforcement of the floor deck. This parapet wall uses prefabricated floor deck as the horizontal force bearing and outer formwork during construction, allowing for rapid on-site installation. Furthermore, it eliminates the need for external scaffolding during parapet wall construction, saving costs and simplifying the construction process. Workers do not need to operate from the outside of the building, ensuring construction safety.

The utility model discloses a kind of cantilever bailey truss supporting system and external frame reinforcing device, it is related to building construction technology field, including external frame, steel wire rope, I-beam, bailey truss, cantilever floor beam slab and bailey truss anchor ring;Wherein, the external frame with the I-beam is connected through the steel wire rope crossing cable-stayed;The bailey truss is fixedly installed on cantilever floor beam slab by the bailey truss anchor ring;The utility model passes through setting crossing cable-stayed steel wire rope, guarantee whole cantilever external frame construction more safe and reliable, the security hidden danger situation existing because starting external frame cannot be set up to throw support is solved.

This invention discloses a novel double-layer pipe roof reinforcement device and its implementation method. The pipe roof consists of two layers arranged in a staggered pattern. A movable sleeve is installed inside the pipe roof, and several steel nails that can pass through the pipe roof are fixed on the sleeve and inserted into the soil under grouting pressure. This effectively expands the reinforcement range of the pipe roof, enhances the self-bearing capacity of the surrounding rock, and achieves a significant reinforcement effect. Furthermore, this invention also discloses an implementation method for using this double-layer pipe roof reinforcement device, including: Step 1: Construction preparation; Step 2: Measurement and layout; Step 3: Installing measuring water pipes or sensors and installing impact drilling tools on the pipe roof steel pipes; Step 4: Installing the first section of steel pipe and starting the drilling rig; Step 5: After advancing 0.5m, verifying the construction parameters and adjusting them before continuing drilling; Step 6: Verifying the pipe roof construction parameters and checking the borehole formation; Step 7: Installing grouting pipes at the ends and filling the pipe roof steel pipes with cement grout; Step 8: Sealing the borehole.

The invention discloses a water-based heavy anti-corrosion coating for construction with rust and residual paint films. The coating comprises an ionic water-based modified alkyd emulsion, water-based fluorocarbon resin, deionized water, an anti-rust pigment, a filler, an anti-flash rust agent, a salt spray resistant auxiliary agent, a self-repairing auxiliary agent, a penetrant, a corrosion inhibitor, a thixotropic agent and an auxiliary agent. The coating contains the anti-rust pigment, the filler, the flash-rust inhibitor and the salt-spray-resistant additive, the four components interact with each other and can act on the steel surface and rust left on the surface to generate a stable chelate passivation layer and a complex, and the product is strongly attached to the steel surface in the form of physical bonds and chemical bonds to form a good insoluble protective film, so that the corrosion resistance of the coating is improved, and the service life of the coating is prolonged. The rust inhibitor can stabilize rust and prevent rust, inhibits the corrosion process, realizes construction with rust, and has the advantages of safety, environmental protection, construction with rust and residual paint film and the like.

This invention provides a support structure for erecting large-span truss steel beams, comprising steel pipe piles, transverse connecting components, and longitudinal connecting components. Four steel pipe piles are evenly arranged in a rectangular pattern. Two longitudinal steel pipe piles are connected by longitudinal connecting components, and two transverse steel pipe piles are connected by transverse connecting components. Each longitudinal connecting component includes an upper longitudinal truss and a lower longitudinal truss, connected by diagonal braces. Two diagonal braces are arranged at the left and right ends of the longitudinal connecting component, forming a figure-eight shape. Each transverse connecting component includes an upper transverse truss and a lower transverse truss, with the upper transverse truss corresponding to the upper longitudinal truss and the lower transverse truss corresponding to the lower longitudinal truss. This invention provides a support structure for erecting large-span truss steel beams, which has the advantages of simple structure, easy construction, light weight, good applicability, and high structural stability.

The utility model discloses a kind of underwater pipeline's group pair device, the underwater pipeline's group pair device includes base and holder, holder is set on base, sliding track is equipped in the length direction of base, sliding track is slidably equipped with slide foot, slide foot is connected with lower bottom plate, lower bottom plate is connected with sleeve, lifting rod is slidably equipped in sleeve, lifting rod is connected with rotating shaft, one end of sleeve, rotating shaft is connected with support plate, support plate is abutted with pipeline, pipeline is clamped in holder in the end away from support plate. The underwater pipeline's group pair device provided by the utility model realizes the clamping of one end of pipeline by holder, the end of pipeline away from holder is abutted on support plate, the up-down position of support plate is adjusted by lifting rod slidably arranged in sleeve, slide foot connected with lower bottom plate is slidably arranged on sliding track, change the support position of support plate to pipeline, so that holder and support plate are in same straight line.

A drilling device and method without a derrick and without drill pipe casing is disclosed. It primarily addresses the problems of high construction costs, easy drill bit burial, collapse, and drill pipe breakage during drilling in existing drilling methods. The method is characterized by: longitudinal air injection holes (6) and exhaust / slag discharge holes (7) respectively opened on the casing wall; after several casings are connected, all air injection holes (6) and all exhaust / slag discharge holes (7) are interconnected; a pneumatic motor (3) is connected to the lowest casing, and a drill bit (4) is connected to the pneumatic motor (3); an air compressor (9) is connected to the pneumatic motor (3) through a high-pressure air injection main pipe (11) and air injection holes (6). This drilling method eliminates the need for a derrick and drill pipe, saving costs; it allows for simultaneous drilling and casing installation, preventing drill bit burial, breakage, and collapse, ensuring construction safety.

The present application relates to the technical field of outdoor wall connecting piece, and particularly discloses a wall connecting piece device and a pulling-resistant construction method, which comprises a pipe body, a forwardly inclined guide hole is arranged on the front part of the pipe body, a puncture plate is movably arranged in the guide hole, and the pulling-resistant construction method comprises the following steps: S1, pressing the pipe body into the soil; S2, pushing the puncture plate to partially penetrate out of the guide hole; S3, continuously pressing the pipe body into the soil to form a soil cavity; S4, taking out the pressing rod; S5, high-pressure pouring of a solidifiable slurry into the pipe body to fill the soil cavity and the inner cavity of the pipe body with the solidifiable slurry; S6, solidification of the poured slurry; and S7, using the pipe body as a pulling rod to perform conventional engineering operation. The present application has the advantages of significantly improving the pulling-resistant capability of the wall connecting piece in slope protection engineering, the firmness and stability of the wall connecting piece long-term buried in the soil, and the engineering life and construction safety.

The invention provides a folding type formwork support, and relates to the technical field of building formworks, the formwork support comprises a plurality of outer support frame assemblies, a standing support frame assembly and a foundation cross expansion and contraction component; the outer supporting frame assembly is of a triangular supporting structure formed by a bottom base rod, a vertical side rod and an inclined supporting rod piece, and the inclined supporting rod piece can be overturned and folded to achieve compact storage of the vertical side rod and the bottom base rod. The lower side of the standing bracket assembly is provided with a template connecting part for fixing a template main body, and the upper side of the standing bracket assembly is provided with a detachable standing plate; the foundation cross expansion and contraction component is connected with a ground pre-embedded screw cylinder through threads to limit displacement of the support. According to the invention, all components are cooperatively expanded and contracted to realize integral folding, so that the transportation volume is reduced; after unfolding, the triangular structure enhances the stability, the inclined supporting rod piece bears the standing supporting frame assembly and transmits loads, and the construction safety is guaranteed by combining the double fixation of the foundation and the formwork. The bracket has the advantages of portability, high stability and quick disassembly and assembly, and is suitable for diversified construction scenes.

The application provides a large-span skew bridge integrated bridging equipment and a construction method thereof, which comprises a first front support leg, a second front support leg, a middle support leg and a tail support leg arranged from left to right at the lower part of a main beam, a first main trolley and a second main trolley slidingly connected at the top of the main beam, and an auxiliary trolley arranged at the side close to the tail support leg, wherein the lower parts of the first main trolley and the second main trolley are connected through a rotary hoist, and the rotary hoist is used for completing the hoisting of a bridge component. The application greatly improves the adaptability to the construction of large-span skew bridges, can adapt to variable skew angles, has high structural strength, high stability and high construction efficiency.

The invention relates to the technical field of building structure reinforcing construction, in particular to a quick mounting and dismounting steel structure reverse hanging supporting system for a building roof and a construction method thereof. The system comprises a bottom supporting base fixed to the top of an original building structure column and a steel truss supporting assembly with the two ends supported on the bottom supporting base; and a reverse hanging bearing assembly is hung below the steel truss supporting assembly. The steel truss supporting assembly is formed by assembling and connecting transverse connecting rods, reinforcing transverse rods, supporting rods and reinforcing inclined rods through connecting blocks. The reverse hoisting bearing assembly adopts a rigid bolt connection mode and comprises a drilling and bar planting hoisting structure for a main beam and a U-shaped hoisting structure for a secondary beam. Prestress is applied through the bolts to achieve active hoisting, original roof beam loads can be accurately transferred to the upper steel truss, a floor stand does not need to be erected, suspended reinforcing operation without affecting ground production activities is achieved, the device is convenient to disassemble and assemble, force transmission is accurate, construction is safe, and the construction period is shortened.

The invention discloses a coal bed gas horizontal well drilling fluid plugging performance evaluation method, and relates to the technical field of oil and gas exploitation, coal dust and coal gangue returned by a coal bed gas horizontal well are taken, dried and crushed, a cementing agent is added, a glue-containing mixture is prepared, and curing and cutting are performed to obtain a coal rock plate or a coal rock plate with microcracks; a coal rock plate is used as a filtration medium of the plugging instrument, and the measured plugging filtration loss and the plugging filtration loss reduction rate are used as evaluation indexes for evaluating the coal rock plugging anti-collapse performance of the drilling fluid; a coal rock plate with micro-cracks is used as a filtration medium of the plugging instrument, and the measured plugging filtration loss and the plugging filtration loss reduction rate are used as evaluation indexes for evaluating the plugging anti-collapse performance of the drilling fluid on coal rock with micro-crack development, so that the anti-collapse performance of horizontal well water-based drilling fluid such as coal bed gas and the like can be reflected more reliably, quickly and accurately; the method is used for guiding safe and rapid construction of horizontal wells easy to collapse, such as deep coal bed gas and carbonaceous mudstone.

The application discloses a steel hanging box hoisting positioning and lowering alignment construction method based on intelligent means and belongs to the technical field of bridge engineering. The method is characterized in that GNSS positioning equipment is arranged on the top of the steel hanging box, the bottom plate keel and the hanging pile beam, spatial attitude data are collected in real time and wirelessly transmitted to a control terminal, the steel hanging box is adjusted to the design position directly above, the camera below the hanging pile beam collects the alignment picture of the bottom plate opening and the steel casing in real time, remote fine adjustment is performed to complete accurate alignment, and finally the steel hanging box is lowered to make the steel casing pass through the opening. The application adopts two-stage relay control of "GNSS coarse positioning + visual fine alignment", is real-time in positioning, accurate in alignment and safe in construction, personnel is not needed to enter the inside of the steel hanging box in the whole process, is suitable for intelligent hoisting construction of the steel hanging box cofferdam of a cross-sea or cross-river super bridge, and precision, efficiency and safety are remarkably improved.

The present application belongs to the field of wind power generation technology, and particularly relates to a protective dismantling construction method of a land wind turbine generator set. The protective dismantling construction method of the land wind turbine generator set comprises the following steps: S1, preparation before dismantling; S2, installation of a wind rope and dismantling of internal components; S3, dismantling of a blade wheel; S4, ground placement of the blade wheel; S5, dismantling of a nacelle; S6, dismantling of a tower drum; S7, dismantling of a bottom tower drum; S8, equipment departure; and completion of the dismantling. The present application determines the number of high-strength connecting bolts or screw rods of the bottom tower drum and the foundation that are required to be reserved before dismantling each component, determines the number of bottom bolts that can be simultaneously dismantled when each large component of the wind turbine generator set is dismantled according to the number of the reserved bolts, thereby reducing the time consumption of the dismantling of the low-end tower drum and improving the rate of the dismantling of the whole machine. Under the premise of ensuring safety, the wind turbine generator set and the foundation connecting components are maximally protected from damage, and the dismantling construction cost is saved.

The utility model relates to the technical field of directional drilling machines, and discloses a feeding device of a directional drilling machine, which comprises a rack, a mounting base arranged on the left side of the rack, a stand column arranged on the right side of the rack, an angle adjusting oil cylinder arranged below the rack, a carriage arranged at the top end of the rack, and a feeding oil cylinder arranged in a cavity of the rack. The auxiliary stabilizing assembly comprises a second stabilizing frame and a first stabilizing frame; and the guide rail assembly comprises a bottom plate and two groups of wear-resistant guide rails. The sliding rod and the stand column are arranged on the two sides of the rack, the angle adjusting oil cylinder is matched with the sliding rod and the first clamping hoop to lift one end of the rack, the inclination angle is adjusted, the directional drilling requirement of an underground complex stratum is met, the stability of the rack is improved by arranging the auxiliary stabilizing assembly, the first stabilizing frame and the second stabilizing frame, construction is safer and more reliable, and the practicability is high. And the guide rail assembly and the feeding oil cylinder are designed in a split mode, and therefore the abrasion-resistant guide rail can be conveniently and rapidly replaced.

This invention relates to a construction operation platform for a bridge concrete crash barrier. The platform includes a portal frame, with pulleys at the bottom to move it, a safety railing at the top, and a first ladder on the side. A U-shaped platform is mounted on the main frame, and a second ladder leading to the top of the main frame provides access to the first platform. This invention offers safe construction, low investment, low construction cost, fast construction speed, and simple operation. The trolley is moved and supported by pulleys on both sides, facilitating movement. It only needs to rest on the laid box girder, solving geographical limitations, saving on the use of large machinery, and reducing costs.

The invention relates to the technical field of tunnel construction, in particular to a landslide accumulation body geology shallow-buried unsymmetrical-pressure tunnel roof collapse disposal method which comprises the following steps that 1, a roof collapse mountain is surveyed on site; 2, reinforcement construction is conducted on the excavated mountain body; 3, lofting is conducted on the outer side of the tunnel primary support, hole forming is conducted in the tunnel trend according to the pile diameter and the pile length of the pipe pile, and the pipe pile is placed in a hole and grouted; 4, top beam construction is conducted on the top ends of the pipe piles on the two sides of the tunnel primary support so that the pipe piles on the two sides can be integrated; and 5, a top plate is arranged on the outer side of the outer contour line of the top of the tunnel primary support, the two ends of the top plate are connected with the crown beams correspondingly, an arch frame is arranged at the bottom of the top plate, and after arrangement is completed, reinforcing treatment is conducted on the roof fall portion in the tunnel hole. According to the disposal method provided by the invention, a large amount of earthwork backfilling and grouting can be reduced, the work amount is obviously reduced, the construction period is effectively shortened, and meanwhile, the construction cost is also reduced.

The invention belongs to the technical field of concrete pouring. The underwater concrete pouring device with the exhaust function comprises a guide pipe and a hopper arranged at the top of the guide pipe, an exhaust pipeline is arranged in the guide pipe in the length direction of the guide pipe, a plurality of exhaust holes are evenly formed in the exhaust pipeline in the length direction of the exhaust pipeline, and a drawing mechanism is arranged in the exhaust pipeline; the drawing mechanism comprises a drawing rope arranged in the length direction of the exhaust pipeline and a balance weight plumb bob arranged at the bottom of the drawing rope. The exhaust pipeline arranged in the guide pipe is matched with the drawing mechanism arranged in the exhaust pipeline, so that high-pressure gas in the guide pipe is exhausted, the problem of underwater concrete pouring failure caused by a high-pressure air bag in the guide pipe is solved, and the construction of an underwater concrete guide pipe pouring method is safer and more reliable and has quality guarantee.

The application discloses an assembled building outer wall heat preservation compression-resistant heat preservation plate, which comprises a heat preservation plate, an outer compression-resistant panel is arranged at the front end of the heat preservation plate, an inner compression-resistant panel is arranged at the rear end of the heat preservation plate, the outer compression-resistant panel and the inner compression-resistant panel are self-locked through compression-resistant rod members penetrating through the heat preservation plate and are connected into an integrated whole, the outer compression-resistant panel and the inner compression-resistant panel are used for clamping original compression-resistant horizontal silk fiber heat preservation materials, stress points are evenly distributed on the outer compression-resistant panel and the inner compression-resistant panel, the outer compression-resistant panel and the inner compression-resistant panel are transferred to the compression-resistant rod members, the compression-resistant strength of the fiber heat preservation materials is improved, the surface of the formed composite heat preservation plate structure is flat and does not need to be repaired, the intermediate heat preservation core material is effectively protected from being damaged, and the protection capability of the heat preservation core material is enhanced.

This invention relates to a high-solids protective coating suitable for stainless steel and magnesium alloys, resistant to 800℃, comprising component A and component B; wherein component A comprises, by weight parts: methylphenyl silicone resin, 30-40 parts; E51 epoxy resin, 15-20 parts; high-temperature pigment, 15-20 parts; nano-silica, 8-12 parts; modified phosphate, 10-15 parts; mica powder, 6-10 parts; additives, 2.5-3 parts; solvent, a mixture of xylene and n-butanol, 8- 10 parts; wherein component B includes the following components by mass: alicyclic amine curing agent, 45-60 parts; modified alicyclic amine curing agent, 20-30 parts; solvent, a mixture of xylene and n-butanol, 15-25 parts. The preparation method includes the following steps: step S1, preparing component A; step S2, preparing component B; step S3, mixing component A and component B according to a designed ratio, and finally coating and curing to form a film. The advantages of this invention are high adhesion, good corrosion resistance and high temperature resistance.

The utility model discloses an ecological brick and belongs to the field of buildings. Comprising a body; the body front end is wider than the body rear end; the body is provided with a front through hole and a rear through hole which are arranged front and back, and the front through hole and the rear through hole penetrate through the body in the thickness direction of the body; a notch is formed in the lower side of the front end of the body, and a protruding plane is arranged on the upper side of the front end. When the two bodies are stacked up and down, the notch of the upper side body is buckled to the rear side edge of the protruding plane of the lower side body in a matched mode, the rear portion of the front through hole of the upper side body and the front portion of the rear through hole of the lower side body are staggered and communicated, and the front portion of the rear through hole of the upper side body and the rear portion of the rear through hole of the lower side body are staggered and communicated. When the ecological brick disclosed by the utility model is in a stacked state, the front through holes and the rear through holes are communicated in a staggered manner, so that good ventilation performance, moisture retention performance and climbing support can be provided, and favorable conditions are created for the growth of plants.

The application discloses a kind of instant concrete quantity intelligent detection methods for feeding line, it is related to concrete processing field, comprising the following steps: non-contact measurement;Echo signal processing;By data registration and splicing, according to the actual environmental conditions of belt conveyor left and right two side point clouds are aligned and spliced into continuous one geometric model, intuitively present concrete shape;Data differential intercept, radar server will point cloud data according to differential method cut out section, calculate continuous section area;Calculate concrete volume;Algorithm parameter selection adapts to the running speed of feeding line;Three-dimensional visualization output;The application is through bilateral laser radar non-contact scanning, point cloud intelligent processing and the cooperative architecture of PLC real-time integration, solves the technical problems that traditional weighing method, mixing building discharge metering and other methods are poor in real-time, low accuracy, cannot detect local overload, realizes the high-precision instant detection of concrete feeding line conveying quantity and the active early warning of plugging risk.

This utility model provides an adjustable height building support frame, relating to the field of height adjustment technology. It includes a main board with threaded slots on its upper surface and a telescopic assembly at its top. The telescopic assembly includes hanging shafts symmetrically installed on the left and right sides of the main board. A base plate is installed at the top of the main board, with threaded slots at its four corners. The main board and base plate are connected by screws. A movable assembly is located at the bottom of the main board, including base hydraulic rods installed at the four corners of the bottom of the main board. By setting the telescopic assembly, adjusting the supporting hydraulic rods, and changing the angle between the two telescopic plates, the pulleys roll along the slide rails, thereby achieving flexible adjustment of the overall height of the device. The freely combinable connection of the base plate and hook hanging shafts enables flexible and close support for long, corner, and irregularly shaped buildings, significantly improving the adaptability and expandability of the device.