摘要:
Method and apparatus for casting a concrete product with a substantially horizontal slipform casting process, concrete mix in said method being fed by means of at least one feed screw (1) through a limited cross-section for forming the concrete product, whereby the feed screw (1) is brought to circular motion on a plane transversal with respect to the length of the feed screw.
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:
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 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:
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 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.
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:
A method and an apparatus for casting concrete elements from a concrete mix by slipforming molding which involves extruding the concrete mix onto a bed, generating pressure into the concrete mix by a first set of extruder members and by compacting the concrete by moving at least one of the movable mold walls in a direction approximately parallel to its plane. The concrete mix is tamped into a more compacted form by protrusions formed onto at least one of the movable mold walls and projecting into the mix. The method and the apparatus achieves a high degree of compaction in the concrete mix by an uncomplicated method and apparatus without generating a loud noise.
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.