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236results about How to "Wide range of uses" patented technology

Energy-saving and waste-utilizing concrete block or board and production method thereof

The invention belongs to the technical field of building materials, and particularly relates to an energy-saving and waste-utilizing concrete block or board and a production method thereof. The energy-saving and waste-utilizing concrete block or board is composed of desulfurization gypsum, slag powder, ultrafine fly ash, cement, foaming agent, alkaline excitant, early strength agent, water reducer, mineral fiber and triethanolamine. The desulfurization gypsum is cold-dried. By the energy-saving and waste-utilizing concrete block or board, industrial waste such as the desulfurization and the slag powder can be consumed in a large amount and turned into treasure, and environmental pressure caused by stacking of the waste can be relieved. In addition, steam conservation is adopted, strength development of concrete block and board is accelerated, and early strength is improved greatly, so that reuse of moulds can be quickened, conservation space is economized, and the energy-saving and waste-utilizing concrete block or board is suitable for industrial production. Foamed concrete block and board produced has fine performances of light weight, heat insulation, sound absorption, flame retardancy and the like. The energy-saving and waste-utilizing concrete block or board is applicable to projects such as roof insulation, wall insulation, road sound absorption and building sound insulation.
Owner:TONGJI UNIV

Lifting device for large cement pipe and construction method thereof

The invention relates to the technical field of engineering lifting operations and specifically relates to a lifting device for a large cement pipe and a construction method thereof. The lifting device for the large cement pipe comprises a transverse hanging beam, two plumbing arms, a rotary shaft, a pair of round plug pins, round pin sleeves, a ball seat, a safety pin and a wing-shaped blocking plate. The device for the large cement pipe is characterized in that a lifting hook hole is arranged in the middle of the transverse hanging beam, hanging ring holes are arranged at two ends of the transverse hanging beam, the hanging ring holes are used for suspending the two plumbing arms respectively through the rotary shaft, the round pin sleeves are embedded on the lower portions of the two plumbing arms respectively, and the pair of round plug pins is inserted into lifting holes which are embedded on the outer wall of the cement pipe through round pin sleeve inner holes. By means of the lifting device for the large cement pipe and the construction method thereof, the problems and hidden dangers that the large cement pipe lifting in prior art is difficult to overturn, low in efficiency and large in risk are solved. According to the lifting device for the large cement pipe and the construction method thereof, a stable lifting can be achieved during a construction process, the large cement pipe can be overturned, the application is wide, the device can be used for lifting, loading, unloading and overturning of the large cement pipe, construction safety is simultaneously guaranteed on the basis of a guarantee for construction efficiency, besides, stable and smooth operation can be maintained during processes of lifting, shifting, inserting and drawing, and the lifting device for the large cement pipe and the construction method thereof are safe, reliable, convenient and rapid.
Owner:中铁市政环境建设有限公司

Rotary tillage ditching stubble burying machine capable of rotating positively and reversely

The invention relates to a rotary tillage ditching stubble burying machine capable of rotating positively and reversely. A colter shaft of the stubble burying machine is connected with a power device of a tractor through a convertible reduction gear box of the colter shaft in positive and reverse rotating direction, and the colter shaft is provided with a rotary blade. The machine is characterized in that the left and right sides of a driven bevel gear shaft in the convertible reduction gear box in positive and reverse direction are respectively provided with a driven bevel gear, the middle of the two driven bevel gears is provided with a cylindrical gear, the two driven bevel gears are both meshed with a driving bevel gear and can both freely rotate on a driven shaft, when the driving bevel gear rotates, the two driven bevel gears do opposite rotation in different directions, the middle cylindrical gear is switched through a fork to be meshed with the jaw of the driven bevel gear at one side, and in this way, the colter shaft can rotate in positive or reverse direction. The burying stubble machine is convenient for adjustment and can change the rotating direction of the colter shaft rapidly in time according to different farmland operation needs and different usages, thus being beneficial to saving farming season and simultaneously reducing the machine purchasing cost of farmers greatly.
Owner:葛伟岸

Flame-retardant antistatic tearproof film material

The invention discloses a flame-retardant antistatic tearproof film material which is prepared from the following raw materials in parts by weight: 40-50 parts of polypropylene, 10-20 parts of polyethylene, 10-15 parts of polyester, 2-5 parts of polyurethane, 1-3 parts of 2,2-dimethylol propionic acid, 5-8 parts of 1,2-dimethylcyclohexane, 4-8 parts of dioctyl adipate, 0.5-3 parts of a flame retardant, 1.5-2.5 parts of a concentrated anti-blocking agent, 0.5-1.5 parts of an antifogging agent, 1-3 parts of an anti-sticking agent, 2.5-4 parts of a slipping agent, 1-5 parts of an antistatic agent, 3-5 parts of zinc oxide whisker and 1-5 parts of conductive fiber. The film material disclosed by the invention has the advantages of being firm and durable, economic and environment-friendly, antistatic, tearproof, antifogging, wide in application range, flame-retardant, fireproof, safe and reliable. The adding amount of the conductive fiber is small, so that the processability is good, the comprehensive performance is excellent, and the film material is particularly suitable for scale production. The added antistatic agent has better conductivity and meanwhile, the zinc oxide whisker with four feet and a three-dimensional structure is added and cooperates with the antistatic agent, so that the material is endowed with an antistatic property efficiently.
Owner:桐城市人和包装有限公司
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