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476results about "Shaping reinforcements" patented technology

PHC (prestressed concrete pipe pile) pile streamline conveying production line

The invention belongs to a production process of a PHC pile and relates to a PHC pile streamline conveying production line. The production line is characterized by comprising a whole production workshop formed by a left area, a middle area and a right area, wherein from the front part to the back part of the workshop, the left area is sequentially provided with a blending floor, an end plate processing area, a steel reinforcement cage, an end plate assembling area and a steel reinforcement cage roll welding area, the middle area is sequentially provided with a concrete spreading area, a cage loading area, an oil spraying pool, a die-cleaning pool, a die-detaching area, and a steel rod precisely cutting and heading area, and the right area is sequentially provided with a tensioning area, a centrifugal molding area, a steaming area, a pipe pile expanding area, a product inspection and code-spraying identifier area, a to-be-high pressure steamed semi-finished pipe pile storing area and a high pressure kettle-entering transition carriage pit. The production line has the beneficial effects that plane circular arrangement is adopted, and the occurrence rate of accidents is reduced due to the adoption of a stereo lifting technical mode that the upper surface and the lower surface are mutually moved; and due to the adoption of a slope platform and a slope rail, the pipe pile is moved, the distance of carriage movement is greatly shortened, and the energy consumption is reduced.
Owner:TIANJIN PORT & CHANNEL PILE IND

Production method of non-residual slurry non-autoclaved prestressed concrete pipe pile

The invention relates to a production method of a non-residual slurry non-autoclaved prestressed concrete pipe pile. The production method comprises the following steps: (1) sequentially adding fine aggregate, coarse aggregate, cement, mineral powder, a mineral additive, water and a water reducing agent into a reaction kettle, and evenly stirring to obtain a concrete mixture; (2) prestressed tensioning the concrete mixture after material distribution and die assembling; (3) centrifuging the concrete mixture after prestressed tensioning, and sequentially carrying out low speed, low medium speed, medium speed and high speed centrifugation steps in centrifugation without producing residual slurry in the centrifugation process; (4) placing the centrifuged concrete mixture into a steam maintenance pool for steam maintenance. According to the production method, after multiple experiments, through contrastive analysis, the nanoscale mineral additive is added, and by matching with the compound high-performance water reducing agent and adjusting existing pipe pile centrifugation and steam maintenance steps, the non-residual slurry centrifugation and one-time demoulding strength of C80 are realized, so that the working procedures of pouring residual slurry and steam maintenance are eliminated, and the environmental pollution and energy consumption of enterprises are greatly reduced.
Owner:TIANJIN YONGSHENG XINHE PILE

A kind of production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars

The invention discloses a production method of a high-strength concrete precast pile doped with a fiber enhanced plastic tendon. The method comprises the following steps: A. circularly arranging a plurality of prestressed reinforcements, welding spiral tendons on the outer sides of the plurality of prestressed reinforcements to cause the plurality of prestressed reinforcements to form a prestressed reinforcement skeleton cage, and arranging fiber enhanced plastic tendons in the prestressed reinforcement skeleton cage to form a compound skeleton cage; B. hoisting the compound skeleton cage into the lower die body of a cleaned die, and respectively installing end joint plates connected with an anchor ear plate onto two ends of the compound skeleton cage; C. conveying the pre-stirred concrete material to the die body by a concrete stirrer; D. horizontally putting the die in step C, and carrying out prestressed stretching on the compound skeleton cage; E. carrying out centrifugal shaping on the stretched die on a centrifugal machine, and completely pouring residual slurry on the inner wall after shaping; and F. hoisting the above die into a steam curing pool for steam curing, and removing the die after steam curing to obtain the pile.
Owner:JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD

Activated powder concrete pole with high strength and high conductivity and making method thereof

The invention provides an activated powder concrete pole with high strength and high conductivity, which comprises an activated powder concrete pole base body, wherein a plurality of steel reinforcing ribs are arranged in the activated powder concrete pole base body. The activated powder concrete pole is characterized in that the activated powder concrete pole base body comprises SiO2, CaO, steelfibers, polypropylene, cement, silicon powder, water and a water reducing agent; and conducting corrosion resistant layers are attached on all the steel reinforcing ribs. The invention further provides a making method which comprises the following steps of: making a magnetic polyaniline polymer solution used for attaching the conducting corrosion resistant layers on the steel reinforcing ribs, making activated powder concrete and making the activated powder concrete pole finished product. The conducting corrosion resistant layers have good conducting property. When thunder acts on the pole, thunder current can be smoothly guided into the ground. The compressive strength and the anti-cracking property of the concrete are enhanced by the activated powder concrete. The making method is scientific and reasonable. The made activated powder concrete pole with high strength and high conductivity has the advantages of good quality, long service life and low cost.
Owner:江西饶电科技股份有限公司

Prestress tensioning mechanism for steel reinforcement cage

The invention belongs to the technical field of buildings, and relates to a prestress tensioning mechanism for a steel reinforcement cage. The prestress tensioning mechanism comprises a stander, wherein a tensioning oil cylinder is fixed on the stander; a connecting shaft oil cylinder which is in sliding connection with the stander is arranged in the stander; the power output shaft of the tensioning oil cylinder is fixedly connected with the connecting shaft oil cylinder, and the power output shaft of the connecting shaft oil cylinder is connected with a taper sleeve which is provided with a conical inner cavity and in sliding connection with the inner wall of the stander; the taper sleeve can do reciprocating motion along the inner wall of the stander under the action of the power output shaft of the connecting shaft oil cylinder and is hinged with a plurality of catching blocks which are uniformly arranged along the circumferential direction of the taper sleeve and are in sliding connection with the taper sleeve. The prestress tensioning mechanism can automatically realize connection with a tensioning screw rod and tension the steel reinforcement cage; after the steel reinforcement cage is tensioned, the prestress tensioning mechanism can automatically lock and tension large nuts and is high in automation degree.
Owner:周兆弟 +7

Concrete pipe platform vibration moulding process and device thereof

InactiveCN101992500AImprove compactnessAffect molding qualityShaping reinforcementsRebarMotor power
The invention relates to a concrete pipe production process. The process includes the following steps: a vibration platform is set, the vibration platform is a mechanical vibration machine with double amplitude vibration sources and amplitude of 1-2, a movable or nonmovable mould is made, the specification Phi of the mould is 1000-3600mm; concrete is prepared; assembling is carried out and the mould is fixed, namely a core mould and an external mould are lifted and mounted and are connected with the base of the mould, and a skeleton steel bar cylinder mould is placed into the mould, and the mould is fixed on the vibration platform to be poured and vibrated; and a moulding opening is arranged on the vibration platform, and concrete is poured into the mould by virtue of an automatic pouring device. A vibration glue pier is arranged between landing legs of the vibration platform, and swing amplitude of eccentric block is reduced. The invention has high vibration frequency, low energy consumption, reasonable vibration distribution and high product moulding compaction rate, and no undesirable influence can be produced on longitudinal and transverse vibrations; vibration moulding speed is fast, equipment cost thereof is only one fourth that of core mould vibration equipment; besides, motor power is low, vibration time is short, and energy sourced is saved.
Owner:朝阳市天龙大型水泥管道(集团)有限公司

Production method of non-surplus-slurry and non-autoclaved prestressed concrete pipe pile

The invention discloses a production method of a non-surplus-slurry and non-autoclaved prestressed concrete pipe pile, which comprises the following steps of preparing raw materials, performing material distribution, die assembly and tensioning treatment, performing low speed, low medium speed, medium speed and high speed centrifugation sequentially, and performing normal temperature steam curing, wherein in the step of preparing the raw materials, the raw materials consist of the following ingredients in parts by weight: 380-420 parts of cement, 80-120 parts of pulverized fuel ash, 650-790 parts of sand, 130-160 parts of water, 1050-1200 parts of gravel, 8-15 parts of novel polycarboxylate superplasticizer and 5-20 parts of excitant; in the step of the low speed centrifugation, a rotating speed is 70-75r/min and the time is 3-5min; in the step of the low medium speed centrifugation, the rotating speed is 120-140r/min and the time is 1.5-2.5min; in the step of the medium speed centrifugation, the rotating speed is set as 230-250r/min; in the step of the high speed centrifugation, the rotating speed is set as 450-550r/min; and the step of normal temperature steam curing comprises three stages, namely the heating stage, the constant temperature stage and the cooling stage. The production method can reduce the quantity of surplus slurry greatly, so that energy conservation and environmental protection are facilitated; the energy conservation and emission reduction are further realized only by an atmospheric pressure steam curing process; and the production method does not require solid microbead raw materials, so that the cost of the non-autoclaved prestressed concrete pipe pile is lowered greatly.
Owner:JIANGSU DONGPU PILE

Process for manufacturing centrifugal concrete pile

ActiveCN102211353AThe design value of the flexural capacity is increasedReduce or avoid the problem of brittle fractureShaping reinforcementsLow speedSuperplasticizer
The invention discloses a process for manufacturing a centrifugal concrete pile. The process comprises the following flows of: (1) manufacturing a reinforcement cage, and placing the manufactured reinforcement cage in a lower mold; (2) assembling an end plate, and inserting a main reinforcement into a counter bored hole to be welded with the end plate; (3) uniformly stirring cement, sand, stones, a superplasticizer and a mineral additive, then distributing materials, and closing the mold to obtain a concrete pile; (4) applying prestressing force to the main reinforcement at one end of the concrete pile by using a prestressing force reinforcement stretch-draw machine according to the requirements of production processes; (5) after the stretch-draw process is finished, performing centrifugal molding which is divided into four stages, namely a low-speed stage, a middle-speed stage, a middle-high-speed stage and a high-speed stage; (6) hoisting the concrete pile and the mold into a steam curing pond, curing, opening a kettle and transporting the pile; and (7) hoisting the pile-containing mold to a demoulding area, demoulding, and then hoisting to a storage yard. In the concrete pile manufactured by the process, the design value of bending bearing force of a pile body can be improved by more than 12 percent, and the design value of drawing bearing force can be improved by more than 10 percent.
Owner:连云港固全新型建材有限公司
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