35results about How to "Meet pouring requirements" patented technology

A self-propelled rhombus-shaped pin-knot truss type hanging basket structure and the walking and construction method of the hanging basket. system and walking system. The main truss system consists of two main trusses and horizontal parallel connections. The single main truss is composed of lower chords, upper chords, oblique rods and columns, and the single-hole pins connect the members into one body through the node box. The two main trusses are connected by horizontal parallel connections with adjustable spacing. The rear anchorage system is connected to the rear of the lower chord of the main truss. The running system includes segmented track located under the main truss, reverse buckle wheels, rollers and traveling jacks and other devices. The invention is quick to install, and on the basis of satisfying the load bearing, the spacing of the main truss and the position of the suspender can be adjusted according to different box girder cross-section forms to form the best stress state, which has strong versatility, greatly increases the turnover rate of the hanging basket, and saves project costs , the economic benefit is obvious.

The invention provides a gas smelting furnace and a smelting method using gas. The smelting furnace comprises a furnace body. At least two rows of gas and combustion-supporting gas nozzles which surround the side wall of the furnace body are arranged between a feed inlet and a feed outlet from top to bottom in the furnace body; one row of nozzles are arranged at the set height of the furnace body to smelt materials; in addition, at least one row of nozzles are arranged above and / or below the row of nozzles. The nozzles which are arranged above the row of nozzles perform preheating on the materials before melting and / or the nozzles which are arranged below the row of nozzles perform over-heating heating on the materials after smelting. A plurality of rows of nozzles are arranged at the smelting furnace body to heat the materials in the furnace and different heating temperature can be provided in the furnace body, so that iron and steel pieces can be rapidly smelted in the furnace body, the problem of oxidation is avoided, the flowability of the molten liquid is good and the furnace is beneficial to the pouring of cast steel and cast iron pieces.

The invention discloses a method for casting a T-shaped beam of prestressed concrete by a non-attachment vibrator. A casting mold is fabricated and equipped according to the design and construction regulation requirements, and mold plates are fixed; when to cast, a small-sized vibrator is stretched into the concrete and vibrates rib feet and rib plates of the T-shaped beam to consolidate the internal parts; concrete is cast from one end of the T-shaped beam to the other end inclinely one layer by one layer till the beam is completed; steel stranded wires in a corrugated pipe is loosened and checked in intervals; the mold plates are dismounted then after the concrete is cured. The method of the invention, due to that a plurality of attachment-typed vibrators are spared, not only reduces the equipment investment and construction but also dramatically reduces the noise generated from the T-shaped beam casting and also, the vibration impact on the mold plates are greatly reduced and the required strength and rigidness of the steel mold plate are accordingly reduced and even the wooded mold plate covered by iron sheets can be used and meet the strength and rigidness requirements. The invention effectively reduces the casting cost of the T-shaped beam and shortens the construction period.

The invention discloses a high-collapsibility ceramic mould core which comprises quartz glass, a mineralizer, a binder and a plasticizer, wherein a, the quartz glass is powder which is a stem material; the grain size of the quartz glass powder is 150-400 meshes, and the powder is a mixture of the quartz glass powder with different grain sizes; b, the mineralizer is boric acid; c, the binder is silica sol or ethyl silicate; and d, the plasticizer is a mixture of paraffin and polyethylene. A preparation method for the ceramic mould core comprises the following steps: 1) mixing and stirring the quartz glass powder, the mineralizer and the binder according to the proportion of the formula until the state of the mixture is sand cluster; 2) drying the mixed materials; 3) ball-milling the mixed materials after drying the mixed materials; 4) preparing ball-milled powder and the plasticizer in proportion to prepare slurry; and 5) pressing the slurry into mould core blank; and feeding the mould core blank into a roasting furnace to carry out roasting. The ceramic mould core mixed blank is good in molding and is high in strength, and has good sintering characteristics; and after being poured, the mould core has good collapsibility.

The invention discloses a dynamic balanced pouring system of a double-layer blade thin-walled guider. By adopting a three-dimensional pouring system with a sprue as the central axis and a three-layer runner, first passing through the first runner of the bottom layer Drain the first molten alloy liquid to the outer ring to fill the outer ring and the outer blades from bottom to top, and then drain the second molten alloy liquid to the inner ring through the second runner in the middle to fill the inner ring. Filling with the inner blade, and finally draining the third alloy liquid to the riser for filling through the third runner on the top layer, realizing the overall filling from bottom to top, from inside to outside , which is conducive to the natural formation of a temperature gradient to achieve the purpose of sequential solidification, especially the final filling and solidification of the riser, which is conducive to improving the feeding efficiency and reducing the loose and scrap rate, and can effectively balance and suppress the risks of various defects, which is very good It meets the pouring requirements of the thin-walled guide for double-layer blades.

The invention provides a concrete formwork supporting device for floor slab concreting. The device comprises main steel-structure beams and a formwork and is characterized in that height adjustable key keels are arranged between the two opposite main steel-structure beams at intervals, auxiliary keels are arranged on the key keels at intervals, and the formwork is placed on the auxiliary keels; a vertical bolt is made to move upwards or downwards by rotating a nut, so that rising or descending of a horizontal beam is realized, the whole key keels are finally made to be stably fixed between the two steel-structure beams by replacing upper cushion blocks and / or lower cushion blocks in different heights or thicknesses, floor slab or floor clapboard concreting requirements are met, and embedding of embedded parts such as cable tubes or cable boxes is facilitated during concreting. According to the device, cross construction such as wall construction can be conducted, working efficiency is improved effectively while construction quality is guaranteed, construction progress is accelerated, and form removal and frame unloading are extremely convenient and fast. The device has the advantages of being capable of making construction convenient and fast, safe and reliable in cross construction, short in construction duration, convenient to dismount, capable of being used repeatedly, low in cost and the like.