摘要:
A concrete tower manufactured by an apparatus comprising a slipform, which is circumferentially guided in such a way that the slipform slides helically on top of the end face of the tower is provided. During the sliding, concrete is disposed by the slipform to the end face of the tower. After numerous revolutions, a low-cost tower is erected.
摘要:
An adjustable mounting assembly (80) for a machine, such as a portable concrete molding machine (10), has a plurality of base plates (81), each base plate (81) having a plurality of holes and/or slots (82) therethrough arranged in a pattern to enable a number of different motors/engines (50, 150) to be mounted thereon. Each base plate (81) has a hinge assembly (83) along one side, which releasably receives a hinge pin (84) releasably engagable in support member(s) on the machine (10) to allow quick interchange of different motors/engines (50, 150), each with a respective base plate (81). An adjusting stud (89) on the opposite side enables adjustable inclination of the base plate (81) relative to the machine (10), to so enable a flexible drive assembly (52), interconnecting the motor/engine (50, 150) fitted to the machine (10), and the input shaft (53) on the machine (10), to be selectively tensioned when a motor/engine (50, 150) is fitted to the machine (10) (or to be de-tensioned for a motor/engine (50, 150) interchange.)
摘要:
A load-bearing structure and a method of producing a load-bearing structure, in particular a tower of a wind energy plant, provides a hollow concrete part with an outer wall which is manufactured by several layers produced in wet-on-wet technology. The outer layer is a fine-grain concrete layer provided with a textile reinforcement, and the inner layer is made of bulk concrete.
摘要:
The invention pertains to the production of cables and can be used for reinforcing single-block constructions and other articles made of concrete. The purpose of the invention is to create a self-rectifying reinforcing member. The reinforcement cable comprises a central wire and layer-forming wires spirally wound around the same and having a periodical profile. A periodical profile is applied on the outer section of the surface of the layer-forming wires and is made in the form of inclined protrusions above the generatrix of the crimped surface of the cable. The sections of the surface of the layer-forming wires in contact with other wires are made in the form of spirally-arranged planar flats. The cable is secured at the base of the structure and is attached upon each casting cycle between the previously-formed portion of the structure and a distribution matrix. The cable is supplied via bypass rollers and a guiding trough from reels arranged at the base. Before each casting cycle, the matrix is moved by a distance corresponding to a section to be formed. Each reinforcing member is integral along the entire length of the structure. The connection of perpendicular members is made using inserts or a tie wire.
摘要:
The invention relates to an improved apparatus for the production of substantially vertical walls, and specifically, walls made of concrete which includes a single sided concrete form used, for example, to form a concrete wall against a preexisting wall or embankment, by pumping concrete into a gap between the form and the preexisting wall or embankment, and raising the form vertically as the pumped concrete settles and drys. The apparatus enables the construction of vertical walls of superior strength in less time as compared to currently available systems.
摘要:
A self-propelled slip form, closed at its top, front, and sides, but open at its rear and bottom, provides a pressure chamber having the cross-sectional shape of a wall or similar structure to be cast. Such slip form may be advanced continuously at a slow rate or in stages, but whichever it is, the advance is due solely to pressure exerted against the closed front of the slip form through the intermediacy of the deposited, unset concrete or the like. Such pressure can be utilized to pre-stress reinforcing material on a continuous basis as it is fed into the pressure chamber simultaneously with deposit of the concrete or the like.
摘要:
The upright annular concrete wall of a silo, swimming pool, or like structure of large diameter is poured in a slip form suspended from three columns for best stability of the slip form arrangement. A work platform is mounted on beams which radially connect the form with a coaxial, inner, annular frame. Carriers are interposed between the columns and the frame in such a manner that six approximately equally distributed circumferential portions of the frame are connected to the columns, so that the unsupported spans of the frame between connections to the carriers are only one half of what they would be if the frame were directly attached to the columns.
摘要:
A scaffold mechanism for constructing a cylindrical building, such as a concrete silo, with a horizontal platform supported on a plurality of fixed arms having telescopically extensible ends with the platform vertically supported on triangularly positioned peripheral vertical ground supported masts having pins placed in openings for locking the platform at vertical increments and having hydraulic lifters on each of the masts for raising the platform for each pouring of new concrete courses. A ground supported main central mast extends up through the platform and supports, at its upper end, cranes which are pivotally supported on the main mast for lifting the forms to reset positions, elevating concrete to a bucket cart which rolls peripherally around on the platform, or suspending and rotating hoses used for the placement of concrete when pumping is used in lieu of elevating concrete to a bucket cart. A hydraulic motor driven pump is carried on the platform for operating the elevating mechanism, the cart and the cranes.
摘要:
A device comprises a framework and a movable panel attached to at least one side of the framework by movable connecting arms. The movable panel is prevented from pivotally moving upward but is permitted to move downward, pivotally supported at supporting points in the arms while the vertical position of the panel is maintained during said movement. After a concrete wall is hardened supported by the panel, the whole device is lifted up by a lifting device. At this time, the panel is set apart from the wall surface due to the pivotal movement, and then the device is placed into the next position of construction by means of the lifting device.