38results about How to "Guaranteed pouring" patented technology

The invention relates to a blocking strip and a blocking net framework. The blocking strip comprises at least two strip sides, at least one of which is provided with convex teeth that are provided with breaches, the breaches are internally provided with agnails or barbs. The blocking net framework can be made by applying the blocking strip, and is formed by connecting keels, the blocking strip and a steel screen in a combining way. The keels are section steel parts and are arranged in parallel according to certain spacing; the blocking strips are vertical to the keels, arranged in parallel according to certain spacing and are fixed at one side or two sides of the keels to form a steel frame; the steel screen is distributed with a longitudinal convex rib as well as fish scales holes or meshes on the surface; the steel screen is attached to the outer surface of the steel frame, and is firmly and conveniently blocked and connected with the blocking strip. The invention solves the problems of composition and construction of a steel screen concrete member as well as the reinforcement of a steel screen concrete wall body. Meanwhile, the invention realizes large-scale and mechanized production, and is suitable for various building structural elements, especially for the structures of multilayer and high residential building wall bodies and floor slabs.

The invention discloses a smelting method for improving the fluidity of molten steel after refining and desulfurization of rebar. The refining and desulfurization process of rebar comprises: converter smelting - post-furnace and argon station treatment - LF refining - continuous casting. The LF refining process includes: refining and sending The slag-forming material lime is added before electricity, and fluorite is added at the same time to adjust the fluidity of the slag and control the alkalinity of the refining slag to meet the standard requirements. During the power transmission process, diffusion and deoxidation are carried out. After the slag is completely melted, the power is cut off. The desulfurization efficiency meets the standard requirements; particle steel is added to increase the oxygen content in the molten steel, and the fluidity of the molten steel is improved; the components of the molten steel are adjusted to ensure that the components of the molten steel meet the standard requirements, and the temperature is qualified for continuous casting; the technical scheme provided by the present invention , After the sulfur content in the molten steel through the refining process reaches the standard requirements, an appropriate amount of high-quality particle steel of oxidizing material is added to improve the fluidity of the molten steel, avoid the clogging of the pouring nozzle, and make the continuous casting process flow smoothly.

The invention discloses a segmental box girder short-line matching control and prefabrication construction method, the steps are as follows: step 1, divide the beam field into functional areas; step 2, make end beams in the beam manufacturing area; step 3, install cast-in-place beams Formwork; step 4, put in the bundled steel skeleton and control the checking position; step 5, pour concrete into the cast-in-place beam formwork; step 6, use the cast-in-place beam as a matching beam for cyclic prefabrication; from this until the pouring is completed, the beams used body; Step 7, put the completed beam body into the beam storage area for maintenance; the present invention divides the beam field into functional areas, which can effectively organize the on-site construction flow and ensure construction efficiency; through the pedestal beam system, measurement control system and The joint setting of the support adjustment platform can not only install and adjust the precise position, but also can control in real time; through the design of the shear key, it can ensure the linear connection in the later stage; the setting of different spraying facilities can be effective and the later maintenance can be carried out.

The invention discloses a precast stair flight manufactured by a non-established and circularly-used template system and a construction method. Each precast stair flight comprises a pedestal, a bottom die fixed on the pedestal, an overall stairboard spliced by a single step plate and a combination of fixing racks. The stairboard is installed on the bottom die in the mode of vertically matching. The combination of fixing racks is fixed on the stairboard along a horizontal direction. The distance between every combination of fixing racks and the vertical direction of the stairboard is the same. The precast stair flight manufactured by the non-established and circularly-used template system and the construction method have following beneficial effects: based on technological summary and innovation, the non-established and circularly-used template system is adopted to precast stair flights on the construction site; while ensuring the concrete forming quality of each stair flight in the first place, a working period is effectively shortened, construction cost is lowered and refuse discharge of construction waste on the site is reduced at the same time.

The invention relates to the technical field of concrete pouring of the construction industry, in particular to a rolling ball type concrete pouring structure and method for an overground large special-shaped stiff column. According to the method, a flexible pouring guide pipe is connected in series with a steel wire through small steel rings in a full-length mode, through the dead weight of a concrete ball, the flexible pouring guide pipe is released to the bottom of the special-shaped column in a rolling mode along string pipes located on the inner wall and inflection point portions of a column body by means of the steel wire, and then a top connecting opening of the guide pipe is connected with a discharge outlet of a hopper or a pump pipe; and in the pouring process, the burying depth of the discharge outlet of the guide pipe is kept until pouring is completed. According to the structure and method, the guide pipe is adopted for pouring construction, the concrete pouring conveying path is independent and is prevented from being separated due to space blocking of steel bars, steel ribs and the like in the column body, and the blending quality and performance of concrete in the pouring position are guaranteed. Tower crane hopper feeding, or mechanical pumping or other ways can be flexibly selected for column body concrete pouring according to field conditions, so that the efficiency of column body concrete pouring is improved.

The construction method of the diaphragm wall anti-collapse pouring formwork suitable for soft soil areas of the present invention belongs to the technical field of underground diaphragm wall construction, and includes a soil-facing side support plate, a back-soil side support plate, an end plate, a bottom support plate and The mud discharge pipe, the side support plate facing the soil, the side support plate behind the soil, the end plate and the bottom support plate form a box-shaped structure with an open top, and the bottom support plate is provided with a mud discharge hole. The bottom of the pipe is inserted into the mud discharge hole, and the top of the mud discharge pipe exceeds the top of the soil-facing side support plate and the back-soil side support plate and extends to the outside of the underground diaphragm wall groove section. The formwork can effectively prevent wall mud from entering the formwork, ensure that the underground continuous wall is poured in an anhydrous environment, and prevent mud from being trapped during concrete pouring. When the reinforcement cage is lowered, it will not float up due to being lifted by the mud, which ensures the quality of concrete pouring. When pouring the concrete of the underground diaphragm wall, there is no need to insert the conduit in advance, and the concrete will not disturb the groove wall, which can effectively prevent the groove wall from collapsing in soft soil areas.

The invention relates to a concrete distributing and conveying system. The system comprises a hopper, a conveyer belt, a cross beam and a to-be-poured area, wherein the cross beam stretches across the upside of the to-be-poured area, the conveyer belt comprises a first conveyer belt, a second conveyer belt, a third conveyer belt and a fourth conveyer belt, which are sequentially arranged from top to bottom, a feeding hole of the first conveyer belt is connected with a discharge hole of the hopper, the second conveyer belt is arranged below the discharge hole of the first conveyer belt, the third conveyer belt is arranged below the discharge hole of the second conveyer belt, the third conveyer belt is fixedly arranged on the cross beam, the fourth conveyer belt is arranged right below the third conveyer belt, the third conveyer belt rotates for transmission in a direction far away from the direction of the second conveyer belt, and a forwardly and backwardly rotating motor is arranged between the fourth conveyer belt and the cross beam, so that the fourth conveyer belt can move longitudinally on the cross beam back and forth and can rotate backwardly and forwardly, and the material is ensured to be discharged from two ends of the fourth conveyer belt. The fourth conveyer belt is driven to longitudinally move forth and back and rotate forwardly and backwardly through the movement of the cross beam and the forwardly and backwardly rotating motor, so that the concentrate is poured and is ensured to be poured in all places of the to-be-poured area.