CS234894B1 - Sliding formwork, especially for the construction of cylindrical chimneys - Google Patents

Abstract

The invention relates to the construction of cylindrical chimneys and solves the problem of changing the thickness of the chimney wall, additional adjustment of the technological taper of the formwork sheets, as well as mechanization in the construction of the protective chimney liner. Sliding formwork suitable especially for the construction of cylindrical chimneys. the essence of which lies in the fact that the supporting crossbar allows changing the thickness of the formwork wall and carries the structural elements for the construction and mechanization of the protective chimney liner as well as formwork sheets with inserts for additional adjustment of the technological taper of the formwork sheets.

Description

234894

BACKGROUND OF THE INVENTION The present invention relates to a cylindrical sliding formwork device particularly suitable for the construction of cylindrical monolithic concrete chimneys and solves the problem of adjusting the concrete crest of a concrete structure, assembling the necessary formwork conicity and at the same time permitting the construction of a chimney liner either in advance of concreting the chimney shaft. -on, or additionally below the sliding formwork working platform level.

So far known cylindrical formwork of cylindrical shaped structures such as high-reinforced concrete monolithic chimneys do not allow to change the concrete wall thickness or additionally set the required technological conicity-formwork and do not deal with the mechanization of the construction of the protective liner.

These drawbacks are remedied by a sliding sleeve suitable especially for the construction of chimney chimneys, which consists in the fact that it consists of lifting devices connected to the cross members, on which the outer and inner formwork plates are fixed by means of legs. The main working platform is fixed on the legs. The cross members are joined together to the outer and inner parts, which parts are interconnected with each other.

On the inner part of the cross-member, the inner form of the formwork plate is mounted on the inner formwork sheet and on the outer part of the cross-member the outer formwork is attached with the outer formwork sheet. Between the contacting surfaces of adjacent and outer and inner formwork plates, spacers of selenium-type various lengths are placed in sequence.

Supports on which the working platform of the insert construction is mounted, as well as the support on which the structure is mounted, includes a platform with a movable hoist, whereby a working platform is also suspended on the structure. The advantage of the formwork, which is the object of protection, is the possibility of adjusting the different sides of the concrete wall according to the static calculations of the chimney construction. At the same time it allows additional adjustment of the conicity of the actual formwork as well as the possibility of constructing the protective liner of the chimney by means of suitable mechanization. An example of a sliding formwork according to the invention is shown schematically in Fig. 1, where a vertical section of the entire cylindrical formwork device is drawn. FIG. 2 is a vertical cross-sectional view of the cross beam and FIG.

The sliding formwork, which is the object of protection, consists of lifting devices 1nap. hydraulic, functionally coupled with climbing bars 2 embedded in the concrete structure. To the lifting devices 1, the crossbeams 3 divided into the outer inner part, which parts are mutually screwed, are clamped. The inner part of the cross-member 3 is provided with openings for re-attaching the inner leg 4 by means of a pin.

An inner form plate 5 is attached to the inner leg 4. An outer leg 6 with the outer formwork 7 is attached to the outer part 3 by means of a pin. The main working platform 8 is fixed on the outer legs 6.

Supports 9 on which the work platform 10 is mounted for the construction of the chimney protective liner as well as the upper supports 11 on which the upper structure 12 comprises a traveling trolley 13 with a traveling hoist 14 are mounted on the beams. auxiliary work platform 15.

Between the contact surfaces of adjacent outer as well as inner boxes, the spacers 18, which are spaced apart by elementary spacers 17, e.g.

The formwork according to the invention functions as follows:

The sliding formwork is lifted by the lifting device 1 along the climbing rods 2 and thus allows the continuous execution of the concrete washing machines from the main working platform 8 as well as the masonry washing machines of the platform 10 and the platform 15. The lifting device 1 lifts the entire sliding formwork supporting beams 3.

The inner part of the crossbeams 3, which have non-sliding legs 4 of the shuttering and the inner shuttering plates 5, are provided with screw holes, thus allowing to alter the crest of the formwork as needed, with the radii of the inner and outer crumbs being reduced.

The inner formwork plates 5 as well as the outer formwork plates 7 are designed such that spacers 18 are inserted between their contact surfaces with spacer elongate plates which allow the desired technological integrity of the formwork plates to be set. The cross members 3 of the non-brace 9, on which the work platform 10 from which the chimney liner is built, as well as the supports 11, on which a structure 12 is provided allowing the insertion of an auxiliary work platform 15, for the construction of a chimney liner or under the main work platform level 8.

The mobile hoist 14 serves to convey the liner material from the upper station of the main working platform 8 to the working platform 10 for the construction of the liner. In case the protective liner is under the level of the main working platform 8, the concrete washing machine is used.

Claims (2)

234894, the auxiliary working platform 15 is attached to the structure 12. The invention can be used in the construction industry for the construction of high monolithic chimneys. P R E D Μ E T 1. Sliding formwork, in particular of chimney stacks, consisting of lifting devices connected to the cross members, on which the outer and inner formwork plates are attached and the main work surface is attached, characterized in that each cross member (3) ) is divided into the outer and inner parts, which parts are interconnected and the inner inner part (4) of the formwork with the inner box (5) and the outer part of the partition (3) is mounted on the inner part of the partition (3). a fixed outer leg (6j of the box with the outer formwork plate (7), the inserts being provided with spacer elements (16) with distance elementary (17) different lengths of spacer between the adjacent surfaces of the outer and inner formwork plates sorted. 2. A sliding formwork according to claim 1, characterized in that the supports (9) on which the work platform and the construction of the protective chimney liner are mounted, as well as the upper the supports (11) on which the structure (12) containing the track (13) is mounted, with the supporting device (14), the auxiliary work platform (15) being also suspended on the structure.