17results about How to "Extend construction time" patented technology

The invention discloses a high-temperature-resistant, low-smoke, halogen-free, flame-retardant and fire-resistant polyolefin cable, relates to the technical field of cables, and aims to solve the problems that a cable core twisting or welding mode is often adopted for connection of a traditional polyolefin cable in the prior art, operation is troublesome, time and labor are consumed, cable core connection of the cable cannot be conveniently carried out, and practicability is poor. The cable body comprises a cable core and a functional sleeve, the cable core comprises a wire core and an inner sheath, the wire core comprises a conductor, an inner shielding layer, an inner insulating layer and a wire core protection sleeve, one side of the cable body is provided with a connecting piece, the connecting piece is composed of a connecting column and a winding layer, the two sides of the connecting column are symmetrically provided with jacks respectively, and the winding layer is arranged in the cable body. A plurality of connecting holes are formed in the connecting column, the two ends of each connecting hole are communicated with the two inserting holes respectively, a lower conductive plate is fixedly installed on the lower portion of the interior of the connecting hole of the connecting column, a conductive block is fixedly installed in the middle of the upper portion of the lower conductive plate, and an upper conductive plate is arranged above the conductive block.

The invention discloses a high-adhesion overweight anticorrosive paint technology, the overweight anticorrosive paint is composed of a component A and a component B. The component A comprises the following raw materials by weight: 40-60 parts of epoxy resin, 5-10 parts of modified polyarylene ether nitrile, 1-15 parts of a diluent, 1-10 parts of a functional filler, 1-15 parts of a pigment, and 0.1-3 parts of an auxiliary agent; the component B comprises the following raw materials in parts by weight: 5-25 parts of a polyamide epoxy curing agent, 5-25 parts of a phenolic aldehyde amine epoxy curing agent and 0.1-3 parts of an accelerant. Through reasonable combination of special molecular structure design and functional filler, a compact, dry and stable protective layer can be formed, and the adhesive force between the coating and a base material is remarkably improved, so that long-term effective protection is provided for a metal structure.

The application discloses a method for vibrating and sinking a pile pipe of a gravel pile, and comprises the following steps: step one, using a vibration hammer on a gravel pile ship to sink the pile pipe into the soil; step two, when the bottom of the pile pipe meets the soil with a larger compactness, and the vibration hammer cannot continue to sink the pile pipe to the design elevation even after reaching the maximum power of the equipment, calculating the additional vibration mass F 额 , that is, calculating the weight of the gravel to be filled into the pile pipe in advance; step three, filling the gravel with the weight of the additional vibration mass F 额 into the pile pipe; step four, continuing to use the vibration hammer to sink the pile pipe until the pile pipe is sunk to the design bottom elevation; and step five, adding the remaining gravel M 桩管 -F 额 into the pile pipe, and then performing a subsequent pipe pulling process. The gravel filled into the pile pipe in advance increases the vibration mass, so that the purpose of improving the penetration of the pile pipe in the pile sinking process is achieved.

The utility model discloses a civil air defense basement combat transition system which solves the problems that a temporarily-built wartime function room is low in construction speed and insufficient in anti-knock performance. The combat transition system comprises an underground open space composed of a warehouse top, a warehouse bottom and constructional columns, an anti-explosion wall is arranged between every two adjacent constructional columns, a temporary basement is defined by the multiple anti-explosion walls and the constructional columns, and assembly parts of the anti-explosion walls comprise an inner wall plate, an outer wall plate, an upper keel, a lower keel and foamed concrete. A cavity between the inner wallboard and the outer wallboard is filled with foamed concrete, and a mold expansion preventing structure is further arranged between the inner wallboard and the outer wallboard. Compared with the prior art, the peacetime and wartime function conversion guided by the scheme has the advantages that modular storage is adopted for main components, when conversion construction is needed, the construction time is shortened, and adopted materials have the characteristics of being light and small in size, so that the materials can be prepared at ordinary times and stored in a protective construction library nearby, and a material foundation is provided for peacetime and wartime function conversion.

The adjustable section steel independent supporting device comprises an independent supporting bottom section and an independent supporting adjustable top section, the independent supporting bottom section comprises a bottom section body, a steel column base and reinforcing ribs, the steel column base is of a sheet-shaped steel structure, the upper end face of the steel column base is connected with the bottom end of the bottom section body, and the reinforcing ribs are arranged on the bottom section body. Two side edges of the reinforcing rib are respectively connected with the upper end surface of the steel column base and the side surface of the bottom joint body; the independent supporting adjustable top section comprises a top section body, steel pipes and an adjustable flat plate jacking, the side faces of the steel pipes are connected with the side face of the top end of the top section body, the length direction of the steel pipes is parallel to the length direction of the top section body, and threaded pipes of the adjustable flat plate jacking are arranged in the steel pipes. The problems that in the prior art, a reinforcing mode for erecting a full-space supporting frame body on a basement top plate is large in material use amount, long in erecting time and large in occupied area, and decoration of a basement is affected are solved.

The present application relates to the field of railway construction, and discloses a three-type plate-type ballastless track fine-tuning power frame system, including: a frame-shaped frame body located above the ballastless track, the frame-shaped frame body includes a crossbeam and a longitudinal beam; support legs installed at the ends of each crossbeam, the support legs are fixed to the track base plate; a fixed plate fixed to the side wall of the ballastless track; a nut seat slidably installed at the ends of the crossbeam; a slide member fixedly installed on the nut seat, a slider is slidably arranged in the slide member, and the fixed plate is installed on the slider; a driving mechanism 1 is installed on the frame-shaped frame body to drive the nut seats at both ends of the crossbeam to move synchronously along the length direction of the crossbeam; a driving mechanism 2 is installed on the frame-shaped frame body to drive the sliders at both ends of the crossbeam to slide synchronously in the slide member. The present application achieves the compression of fine-tuning time, increases the construction time for subsequent construction, and improves the construction efficiency.

The invention provides a bearing mechanism for mounting a building construction cantilever beam, and relates to the technical field of building construction. The bearing mechanism for installation of the building construction cantilever beam comprises a base, a supporting table is arranged at the top of the base, supporting frames are fixedly installed on the two sides of the supporting table, a formwork is arranged at the top of the supporting table, two communicating holes are formed in the formwork, four limiting connecting rods are fixedly installed at the bottom of the formwork, and the supporting frames are fixedly installed on the supporting table. And the bottom ends of the four limiting connecting rods extend to the bottom of the supporting frame and are fixedly provided with limiting plates, a first servo motor is fixedly installed in the supporting frame, a driving rod is rotationally installed in the supporting table, and a plurality of knocking balls are fixedly installed on the outer side of the driving rod. The bearing mechanism for mounting the building construction cantilever beam has the advantages of being convenient to use, easy to operate and capable of rapidly separating the cantilever beam from the formwork.

The utility model discloses a welding tool for a top plate and a bottom plate of a single-box double-chamber steel box girder, and relates to the field of municipal bridge construction. The welding tool comprises a vertical supporting piece and a connecting piece, the vertical supporting piece comprises a vertical connecting piece and a supporting piece, the vertical connecting piece is used for being connected with the connecting piece, and the supporting piece is used for supporting the single web side steel box girder; one end of the connecting piece is used for being connected with a web of the double-web side steel box girder, and the other end of the connecting piece is used for being connected with the vertical supporting piece. The utility model further provides a welding method. According to the steel box girder butt joint device, time waste caused by high-altitude butt joint, seam stacking and other procedures of the steel box girder can be reduced to a great extent, the construction progress is accelerated, and labor is saved. And secondly, due to the increase of the construction time, the construction quality of welding operators is indirectly guaranteed, and the quality defect caused by time scrambling is avoided.

The application discloses a vertical shaft concrete automatic sliding delivery and distribution device and belongs to the technical field of building construction machinery, which comprises a foundation, a vertical shaft is formed in the interior of the foundation, a suspension frame and a sliding delivery system are arranged above the foundation, the sliding delivery system comprises a bearing frame, a plurality of driving wheels are arranged at the bottom of the bearing frame, a concrete mixer is arranged above the bearing frame, a rotary flow divider is arranged at the bottom of the suspension frame and close to the position of the vertical shaft, a slanting chute which is in intercommunication is arranged between the rotary flow divider and the concrete mixer, a plurality of vibrators are arranged outside the slanting chute, a plurality of vertical shaft support frames are arranged in the interior of the vertical shaft, a sliding ash pipe is arranged at the bottom of the rotary flow divider, and a cross fixed frame is arranged in the interior of the vertical shaft support frame at the bottom of the vertical shaft; when the application is used, the distribution of the vertical shaft can be automatically completed, the distribution efficiency and construction time are improved, the underground operation personnel are reduced, and the safety is effectively improved.

The present invention belongs to the technical field of waterborne coatings, and specifically relates to a waterborne coating composition and a preparation method thereof. The composition comprises a waterborne acrylic polyurethane topcoat and a waterborne epoxy primer; the waterborne acrylic polyurethane topcoat comprises: component A and component B; the waterborne epoxy primer comprises component A and component B; component A comprises: waterborne hydroxy acrylic dispersion, color paste, silicon dioxide, solvent A, pH regulator, wetting agent A, defoamer A, polytetrafluoroethylene wax, thickener A, anti-settling agent A, and water; component B comprises: hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate, propylene glycol methyl ether acetate, and dehydrating agent; component A comprises: waterborne epoxy emulsion, carbon black, titanium dioxide, dispersant, solvent B, wetting agent B, defoamer B, thickener B, anti-settling agent B, and water; component B comprises: modified aliphatic amine curing agent and water. The composition has excellent adhesion, hardness, and weather resistance.

The invention relates to an additive capable of retaining water, curing and inhibiting water evaporation in a concrete plasticity stage, a preparation method and application. The additive comprises a modified styrene-acrylic emulsion, a potassium silicate / lithium silicate mixture, lithium polysilicate, a silane or siloxane emulsion, a water reducing agent, a coalescing agent and deionized water. In the potassium silicate / lithium silicate mixture, the modulus of potassium silicate and the modulus of lithium silicate are both greater than 3.0, and the weight ratio of potassium silicate to lithium silicate is 1: (0.1-2); the ratio of SiO2 to Li2O in the lithium polysilicate is greater than or equal to 40; the silane or siloxane emulsion is in a uniform and stable white emulsion state, and the active matter content is 50%; the density is 0.95 g / cm < 3 >, the approximate pH value is 8, and the product is weakly alkaline. The wear resistance and compressive strength of the additive are particularly high, and the additive can reduce evaporation of water on the surface of concrete, prevent the surface of concrete from cracking and the like; in addition, the constructability of the concrete can be improved, and the concrete has the characteristics of bleeding prevention, difficulty in layering and the like.

The invention discloses a ground launching method for a large-section long-distance pipe-jacking tunnel. The ground launching method comprises the steps that a horizontal bearing pile is constructed on a stratum below a pipe-jacking well; the shallow soft stratum in front of the horizontal bearing piles is reinforced; a shallow foundation pit of the pipe jacking well is excavated, and a slope of the foundation pit is supported; a bearing platform of the horizontal bearing pile is constructed, during construction, the bearing platform is rigidly connected with pile body steel bars, vertical steel bars are reserved, and the periphery of the bearing platform is backfilled with gravel and cement backfill materials after construction is completed; a cast-in-place reinforced concrete pipe-jacking well with a reinforced structure is constructed, the pipe-jacking well is in rigid connection with the reserved vertical steel bars of the bearing platform during construction, and the shallow foundation pit is backfilled with plain soil backfill materials after construction is completed; and after equipment is installed and adjusted on the pipe jacking well, jacking construction of the pipe jacking tunnel is conducted. According to the method, a horizontal bearing pile is arranged, the strength and rigidity of a soil body in front of the horizontal bearing pile are enhanced, the horizontal bearing force under the pile foundation top consolidation condition is utilized, huge and reliable horizontal jacking force is provided for pipe jacking construction, and therefore pipe jacking tunnel ground launching is achieved.

The present invention discloses an active charging warning and remaining mileage calculation method for an electric excavator, comprising the following steps: grouping and calibrating the battery power, calculating the driving distance that can be achieved by consuming the power of each group of intervals, and establishing a remaining mileage fitting function, based on the fitting function, calculating the remaining mileage that can be satisfied by the remaining power, selecting a reliability coefficient, and setting a charging warning trigger condition based on the remaining mileage and the distance between the work site and the charging pile. After the warning, the excavator goes to the charging pile to charge, and the remaining mileage during the charging process is calculated in real time. The present invention can improve construction efficiency and effective working time.

The utility model relates to the technical field of gap grouting, and provides a constructional engineering structure gap grouting device which comprises a machine box, a handle is fixedly installed on one side of the top surface of the machine box, a feeding bin is fixedly arranged on the surface of one side of the top of the machine box, and a feeding barrel is fixedly installed on the surface of one side of the machine box in a transverse penetrating mode. A discharging port is fixedly formed in the surface of one side of the feeding barrel, a protection block is fixedly installed on the outer side of the discharging port, the machine box is arranged, and according to the arrangement of a U-shaped structure at the bottom of the machine box, an operator can conveniently carry equipment on the shoulder in the construction process, so that the weight borne by the arm during hand-held construction is reduced, and the construction efficiency is improved. And meanwhile, the feeding bin is arranged at the top of the machine box, feeding is facilitated, meanwhile, the sight of an operator is not blocked, the operator can conveniently and visually align a discharging opening to a gap, the construction time of the operator is shortened, and the working efficiency is improved.

The invention relates to a prestressed concrete beam preparation method, which comprises: S1, mixing and stirring cement, fly ash, fine aggregate and coarse aggregate to obtain a dry material; s2, mixing nano silicon dioxide, natural zeolite and water, and performing ultrasonic dispersion to obtain dispersion liquid; mixing and stirring the dry material and the dispersion liquid to obtain a wet material; s3, adding a water reducing agent into the wet material, and stirring to obtain concrete slurry; s4, the concrete slurry is poured into a post-tensioned prestressed concrete beam mold, then primary curing is conducted, a concrete beam blank is obtained, and the curing temperature ranges from 35 DEG C to 55 DEG C; after prestress is applied to the concrete beam blank, a prestressed concrete beam blank is obtained; and S5, the prestressed concrete beam blank is subjected to secondary curing at the curing temperature of 40-65 DEG C, and the prestressed concrete beam is obtained after curing. The problems that in the prior art, a concrete beam deforms and cracks more after being used for a long time, the early strength of the concrete beam is increased slowly, and the cost of the concrete beam is too high are solved.

This utility model discloses an installation and alignment device for T-bolts on large equipment foundations, belonging to the field of concrete foundation technology, and mainly used for the installation of large equipment foundations. The technical problem to be solved by this utility model is to provide an installation and alignment device for T-bolts on large equipment foundations, including a vertically arranged support column to enclose and form a T-bolt sleeve installation cavity. A T-bolt sleeve is provided inside the installation cavity. The support column includes a pre-embedded section and an extension section. The pre-embedded section is located within the secondary poured concrete, and a tie beam is provided between two adjacent pre-embedded sections at intervals along its length. One side of the T-bolt sleeve is fixedly connected to the tie beam. The extension section is located above the secondary poured concrete, and a alignment frame beam for hanging alignment lines is provided between two adjacent extension sections. This device can both fix the installation position of the T-bolt sleeve and be used as an alignment frame for aligning the T-bolt sleeve, improving installation accuracy and reducing material consumption.

The application discloses a high-pressure grouting device, which comprises a drill rod and a grouting pipe; the drill rod comprises a rod body, a drill bit fixed at the lower end of the rod body, and a sleeve fixed at the top surface of the drill bit and located in the rod body; the outer periphery of the drill rod is provided with a grouting pipe, the inner periphery of the drill rod is provided with a baffle for blocking the grouting pipe, the baffle is connected to the sleeve through a pressure spring, the side surface of the baffle is provided with a conveying pipe, the outer periphery of the sleeve is provided with a secondary grouting pipe, and the secondary grouting pipe is connected to the conveying pipe; the grouting pipe can be inserted into the rod body and detachably connected to the sleeve through a locking plate. The lower end of the rod body is closed by the drill bit, the grouting pipe is connected to the sleeve, the drill rod and the sleeve are connected through a pipeline, and the transportation of slurry is realized, so that the slurry can be smoothly sprayed, the phenomenon that the grouting pipe extends to the outside of the rod body is avoided, the direct contact between the grouting pipe and various materials in the drill hole is avoided, and the probability of damage of the grouting pipe is effectively reduced.