摘要:
A method and apparatus for casting concrete elements with varying, determined length, equipped with one or with a plurality of longitudinal hollow cores, by means of a slipforming apparatus. The apparatus is movable with respect to the bed (2), said apparatus comprising forming members (10) for forming hollow cores. The mass is fed in the first step to the portion of the slab below the hollow cores, and in the second step the hollow-core forming members being brought onto the said portion of the slab and mass is being fed between the forming members and onto them. The forming member (10) for forming a hollow core comprises an attachable extension part (22). The height of a hollow core is changed by changing the extension part of the hollow core forming member.
摘要:
Method and apparatus for attaching a part forming a lifting lug to fresh, prestressed hollow-core slab or massive slab, wherein the part forming the lifting lug is embedded by vibrating at least partly through the upper surface of the slab, after which the part forming the lifting lug is turned by vibrating, so that the lower parts of the lifting lug set themselves under the reinforcing strands of the slab.
摘要:
A method and an apparatus for casting self-compacting concrete mix, wherein the self-compacting concrete mix is cast to a mold so that based on the weight and the form of the product to be cast, the total amount of the required concrete mix is determined, the casting points are determined for the product to be cast, at which the concrete mix is cast to the mold, at each casting point the amount of the concrete mix to be cast is determined and the product is cast by casting the determined amounts of concrete mix into the mold at the determined casting points.
摘要:
A method and apparatus are disclosed for casting prestressed hollow-core concrete products, in which method concrete mix is fed onto a casting bed with the help of feeder augers having a diameter smaller than the height of the hollow-core cavities being formed. The invention is characterized by having the concrete mix flowed along slanted leading-end surfaces of the core-forming mandrels so as to form cavities larger than the cross section of the feeder augers.
摘要:
A method and an apparatus for casting concrete products substantially with a horizontal slipforming process, the concrete mass in said method being fed by means of at least one feed element (2) through a limited cross section (13, 7, 8) for forming a concrete product, whereby the feed elements (2, 5, 15, 16) produce a two-directional compacting motion for compacting the concrete mass.
摘要:
A method and an apparatus for casting a concrete product with a substantially horizontal slipforming process, the casting mix in said method being fed at least in two different stages to a mold proceeding with the cast, whereby at least in one casting stage the casting mix to be fed to the mold is accelerated into a desired speed before taking the mix to the casting mold.
摘要:
An apparatus for forming frogs in the sides of a slipformed concrete element, especially a hollow-core slab is disclosed. In accordance with the invention, the frogs are formed in the sides of the element by removing cast material from the sides by a reciprocative scraping action. The reciprocative movement parallel to the side of the element is effected with a drive motor and a lever assembly. By the method, it is possible to obtain a desired frog shape and depth without damaging the side surfaces.
摘要:
A method for producing hollow-core slabs substantially with a horizontal slipforming process, the concrete mix to be cast being fed in said method through a limited cross section to form a product with a desired form, whereby the areal weight of the hollow-core slab to be cast is changed by changing the width of the hollow core of the hollow-core slab and/or by casting a part of the hollow-cores to be solid.
摘要:
A sidewall system of a casting mold to be fixed detachably to a casting bed, especially to be used with a sidewall robot, said sidewall system comprising a sidewall element (1) and a magnet unit (3) for fixing the sidewall element to the casting bed, whereby one or a plurality of auxiliary magnets (2) have been located to the sidewall element (1), to the surface of the sidewall element setting against the casting bed.
摘要:
A method and an apparatus for collecting waste concrete, where slipform cast and eventually precut concrete product are led to a sawing station, where the concrete product is subjected to desired sawing processes and the sawn product is led out of the sawing station by means of a conveyor line, after which the sawn concrete products are lifted away from the conveyor line while leaving the waste concrete produced by sawing on the conveyor belt to be moved along the conveyor line to a collecting container of waste concrete. In solution in accordance with the invention the filling of the collecting container of waste concrete is monitored and the feeding of the waste concrete is controlled based on the filling.