EP0320855B1 - Wrecking arrangement for chimneys, particularly for convergent chimneys - Google Patents

Wrecking arrangement for chimneys, particularly for convergent chimneys Download PDF

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Publication number
EP0320855B1
EP0320855B1 EP88120748A EP88120748A EP0320855B1 EP 0320855 B1 EP0320855 B1 EP 0320855B1 EP 88120748 A EP88120748 A EP 88120748A EP 88120748 A EP88120748 A EP 88120748A EP 0320855 B1 EP0320855 B1 EP 0320855B1
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EP
European Patent Office
Prior art keywords
chimney
chimneys
working platform
supports
demolition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88120748A
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German (de)
French (fr)
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EP0320855A3 (en
EP0320855A2 (en
Inventor
Antoni Romatowski
Josef Lukaszewicz
Juliusz Szczurowski
Leslaw Ucisko
Andrzej Konstanty
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PRZEDSIEBIORSTWO MONTAZU I DOSTAW PIECOW TUNELOWYCH BIPROPIEC
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PRZEDSIEBIORSTWO MONTAZU I DOSTAW PIECOW TUNELOWYCH BIPROPIEC
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Priority claimed from PL26952087A external-priority patent/PL158978B1/en
Priority claimed from PL27462388A external-priority patent/PL160021B1/en
Application filed by PRZEDSIEBIORSTWO MONTAZU I DOSTAW PIECOW TUNELOWYCH BIPROPIEC filed Critical PRZEDSIEBIORSTWO MONTAZU I DOSTAW PIECOW TUNELOWYCH BIPROPIEC
Publication of EP0320855A2 publication Critical patent/EP0320855A2/en
Publication of EP0320855A3 publication Critical patent/EP0320855A3/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E04G23/082—Wrecking of buildings using shears, breakers, jaws and the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/08—Wrecking of buildings
    • E04G2023/087—Wrecking of buildings of chimneys, smoke stacks or the like

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Description

Die bisher bekannte und benuzte Anlage nach dem polnischen Patent Nr.118101 in Zylinderform ist eine Hilfe in Schornstein-Abbrucharbeiten, die mit Handmethode durchgeführt werden. Die Anlage besteht aus mindestens drei radial verbundenen Fachwerkträgern, an die äussere und innere, den Schornstein von aussen und innen umgebende Blech-oder Drahtnetzmantel befestigt sind.Am unteren Teil der äusseren Seilkomplexe ist die Arbeitsbühne befestigt, und am unteren Teil der inneren Seilkomplexe ist ein, zugleich als Innenbühne dienender Schutz, befestigt. Die Anlage wird vor allem zum Abbruch der Zylinder-Schornsteine angewendet.The previously known and used system according to the Polish patent No. 118101 in cylindrical form is an aid in chimney demolition work, which is carried out using the manual method. The system consists of at least three radially connected truss girders, to which the outer and inner sheet metal or wire mesh sheaths, the chimney from the outside and inside, are fastened , which also serves as an inner stage protection. The system is mainly used to demolish cylinder chimneys.

Ungünstig in der oben beschriebenen Anlage ist ihr komplizierter Bau, schwere, den Schornsteinenabbruch in nicht allen Terrainverhältnissen garantierende Konstruktion, wenn sich der Abbruchsobjekt in geschlossener Terrain-Bebauung befindet. Auf die Arbeit dieser Anlage wirkt ungünstig die Tatsache, dass nach dem Abbruch eines Schornsteinteils, die Bühne aufs neue auf anderer Höhe zu montieren ist, was eine erschwerliche, mit vergrössertem Aufwand der Körperlichen Arbeit verbundene Notwendigkeit ist. Auch die vorhandenen äusseren und inneren Schütze vermeiden nicht ausreichend den Schuttausfall nach aussen, was die Beschädigung der in der Nähe des abgebrochenen Schornsteines gelegenen Objekte verursacht. Ausserdem verlangt die Montage dieser Anlage Anwendung eines entsprechend hohen und schweren Krans, der solche Terrainfläche einnimmt, die nicht immer erlaubt den Kran auf die Stelle zu bringen,in später Schornsteinabbruch erfolgen soll.Unfavorable in the system described above is its complicated construction, heavy construction, which guarantees the chimney demolition in not all terrain conditions, if the demolition object is in a closed terrain development. The fact that after the demolition of a chimney part, the stage has to be reassembled at a different height has an unfavorable effect on the work of this system, which is a difficult necessity, which is associated with increased physical labor. The existing external and internal contactors also do not adequately avoid the failure of the rubble to the outside, which causes damage to the objects located near the broken chimney. In addition, the installation of this system requires the use of a correspondingly high and heavy crane, which takes up such terrain that does not always allow the crane to be put on the site, which is to be done in late chimney demolition.

Ziel der Erfindung war eine solche Anlagekonstruktion zu bearbeiten, die als die schon bestehende leichter wäre, für Abbruch der Zylinder-sowie konvergenten Schornsteine angewendet werden könnte, und die erlaubte, schwierige und zeitraubende Umstellung der Arbeitsbühne zu eliminieren. Die technische Aufgabe, die in diesem Zweck gelöst werden musste, besteht in Errichtung solcher Anlage, die leichte Anpassung ganzer Konstruktion d.h. der Träger, Arbeitsbühne an den Abbruchschornstein von grosser Konvergenz mit Durchmessern vom Ausgangs - bis zum Enddurchmesser im Verhältnis 5 : 1 oder 1 : 5 ermöglicht.The aim of the invention was to process such a system construction, which would be easier than the existing one, could be used for demolition of the cylinder and convergent chimneys, and to eliminate the difficult and time-consuming conversion of the work platform. The technical task that had to be solved for this purpose is to set up such a system, the easy adjustment of the entire structure, i.e. the carrier, working platform to the demolition chimney of great convergence with diameters from the starting to the final diameter in a ratio of 5: 1 or 1: 5.

Die Anlage besteht, der Erfindung nach, aus einem unteren und oberen Träger, die miteinander drehbar verbunden sind. Am unteren Träger sind radial verschiebbare Wagen bebaut, mit den Stützen geendeten vom unten mit vertikal verschiebbaren Füssen, die sich auf der Schornsteinkrone stützen, an der die Arbeitsbühne aufgehängt ist. Am Oberträger sind die radial verschiebbaren Wagen mit Stützen bebaut. An den Wagen sind Brecher aufgehängt.The system consists, according to the invention, of a lower and upper carrier, which are rotatably connected to one another. Radially movable carriages are built on the lower beam, with the supports ending from the bottom with vertically movable feet, which are supported on the chimney crown on which the work platform is suspended. The radially movable carriages are fitted with supports on the upper beam. Crushers are hung on the car.

Die Drehachse der Träger befindet sich in der Mittelachse des Schornsteines. Der untere sowie der obere Träger können die Form einer zweiarmigen Konstruktion haben, die den Querschnitt des Schornsteines symmetrisch teilt, oder die Form einer dreiarmigen Konstruktion, deren Arme alle 120° ausgelegt sind.The axis of rotation of the beams is in the central axis of the chimney. The lower and the upper beam can have the shape of a two-armed construction, which symmetrically divides the cross section of the chimney, or the shape of a three-armed construction, the arms of which are laid out every 120 °.

Die Arbeitsbühne ist aus den Stäben angefertigt, die gelenkig längsseits und querseits am ganzen Umfang der Schornsteinkrone verbunden sind, und im unteren, an der Wand stehenden Teil besitzt sie Rollen, und im oberen, äusseren Teil-Flaschen mit Seil oder Seilen mit Spannschrauben. Die Arbeitsbühne hat an der Schornsteinleiterdurchgangstelle ein Loch, ausserhalb dessen ist die Bühne um ein, aus derselben Elementen wie der andere Teil der Arbeitsbühne angefertigtes Segment vergrössert.The work platform is made of rods that are articulated along and across the entire circumference of the chimney crown, and in the lower part on the wall it has castors, and in the upper, outer part bottles with rope or ropes with tensioning screws. The work platform has a hole at the chimney ladder passage, outside of which is the stage enlarged by a segment made from the same elements as the other part of the work platform.

Mit Anwendung der Lösung nach der Erfindung wird Arbeitsleistungssteigerung erreicht, Sicherheit und Minderung der körperlichen Belastung der die Anlage bedienenden Arbeiter. Die Erfindung ermöglicht auch Durchführung der Abbrucharbeiten auf den dicht bebauten Gebieten, ohne speziellen Schutz verwenden zu müssen. Ausserdem erlaubt die Arbeitsbühnenkonstruktion, die Durchmesser-Änderungen fliessend durchzuführen, um die Bühnenform zur Form des konvergenten Schornsteines anzupassen.With the application of the solution according to the invention, an increase in work performance is achieved, safety and a reduction in the physical strain on the workers operating the plant. The invention also enables demolition work to be carried out in densely built-up areas without having to use special protection. In addition, the work platform construction allows the diameter changes to be carried out smoothly in order to adapt the stage shape to the shape of the convergent chimney.

Die Lösung nach der Erfindung wurde auf den Zeichnungen gezeigt, auf denen Fig.1 den Grundriss des unteren und oberen Trägern zeigt, die eine den Schornsteinquerschnitt symmetrisch teilende Konstruktion bilden, Fig.2-Aufriss des unteren und des oberen Trägers längs der Linie B-B, Fig.3 - Grundriss des unteren und des oberen Trägers, die die dreiarmige Konstruktion bilden, Fig.4-Aufriss des unteren und des oberen Trägers längs der Linie A-A, Fig. 5 - Querschnitt längs der Linie C-C auf Fig. 2.The solution according to the invention was shown in the drawings, in which Fig. 1 shows the plan of the lower and upper beams, which form a construction symmetrically dividing the chimney cross section, Fig. 2 plan of the lower and upper beams along the line BB, Fig. 3 - plan of the lower and the upper beam, which form the three-armed construction, Fig. 4 - elevation of the lower and the upper beam along the line AA, Fig. 5 - cross-section along the line CC on Fig. 2.

Die Anlage nach der Erfindung besteht aus dem waagerechten unteren Träger 1 und aus dem waagerechten Oberträger 2, die zentral drehbar mit einem Kreislager 3 verbunden sind insgesamt mit dem die gegenseitige Drehung der Träger garantierenden Antrieb. Der untere Träger 1 und der Oberträger 2 hat in erster Variante Gestalt einer, den Querschnitt des Schornsteines symmetrisch teilenden Konstruktion in Form eines zweiarmigen Trägers. In anderer Variante hat der untere Träger 1 und der obere Träger 2 solche Gestalt, die diesen Schornsteinquerschnitt in drei Teile teilt, eine dreiarmige Konstruktion des unteren Trägers 1 und des oberen Trägers 2 mit Armenauslegung alle 120° bilden. Die Drehachse der Träger befindet sich in der Drehachse des Schornsteins. Am unteren Träger 1 sind radial verschiebbare Wagen 4 bebaut, mit Stützen 5 verbunden. Die Stützen 5 enden von unten mit den vertikalverschiebbaren, sich auf der Schornsteinskrone 7 stützenden Füssen 6. Die Füssen 6 werden mittels hydraulischen Steuermotoren in Bewegung gesetzt. Am Obereträger 2 sind radial verschiebbare Wagen 8 bebaut, mit den Stützen 9 verbunden. An der Wagen 8 sind Brecher 10 aufgehängt, dagegen an der Schornsteinkrone 7 ist die Arbeitsbühne 11 mittels an Enden der Radialträger 14 übergehängten Seilen 13 aufgehängt.The system according to the invention consists of the horizontal lower beam 1 and of the horizontal upper beam 2, which are rotatably connected centrally to a circular bearing 3 with the drive which guarantees the mutual rotation of the beams. In the first variant, the lower support 1 and the upper support 2 have the shape of a construction which divides the cross section of the chimney symmetrically in the form of a two-armed support. In another variant, the lower support has 1 and the upper one Beam 2 such shape that divides this chimney cross-section into three parts, form a three-armed construction of the lower beam 1 and the upper beam 2 with arm design every 120 °. The axis of rotation of the beams is in the axis of rotation of the chimney. Radially displaceable carriages 4 are built on the lower support 1 and connected to supports 5. The supports 5 end from below with the vertically displaceable feet 6, which are supported on the chimney crown 7. The feet 6 are set in motion by means of hydraulic control motors. Radially displaceable carriages 8 are built on the upper support 2 and connected to the supports 9. Crusher 10 are suspended from the carriage 8, while the work platform 11 is suspended from the chimney crown 7 by means of cables 13 suspended from the ends of the radial supports 14.

Die Arbeitsbühne 11 ist aus den gelenkig längseits und querseits am ganzen Umfang der Schornsteinkrone 7 verbundenen Stäben 12 aufgebaut. Am unteren, an der Wand stehenden Rand der Arbeitsbühne 11 werden Rollen 15 befestigt, um in Innern der Bühne das Gleichgewicht zu behalten. Die Rollen,sich am Schornsteinmantel bewegend, übertragen auf ihn eine Komponente der unteren waagerechten Kraft der Arbeitsbühne 11. Der obere aüssere Rand der Arbeitsbühne 11 wird in seinem ganzen Umfang mit Seil 17 oder mit Seilen mit Spannschrauben 18 umgeben, wobei das Seil 17 sich um die waagerecht in Gelenken der Stäben 12 aufgesetzten Flaschen 16 wickelt. Das Seil 17 oder Seile mit Spannschrauben 18 werden mit der, der Komponente der oberen waagerechten Kraft der Arbeitsbühne 11 gleich wertigen Kraft gespannt. Die Arbeitsbühne 11 hat an der Schornsteinsleiterdurchgangsstelle 19 ein Loch, ausserhalb dessen ist Bühne 11 um das Segment 20 vergrössert aus derselben Elementen wie der andere Teil der Bühne 11 gebaut. Es ist auch möglich an Stelle der in der Beschreibung dargestellten Arbeitsbühne 11 andere bekannte Bühnen 21 aufzuhängen.The work platform 11 is constructed from the rods 12 connected in an articulated manner along and across the entire circumference of the chimney crown 7. At the lower, standing on the wall edge of the work platform 11 rollers 15 are attached to keep the balance inside the stage. The rollers, moving on the chimney shell, transfer to it a component of the lower horizontal force of the work platform 11. The upper outer edge of the work platform 11 is surrounded in its entire extent with rope 17 or with ropes with tensioning screws 18, the rope 17 being around which winds horizontally in the joints of the rods 12 placed bottles 16. The rope 17 or ropes with tensioning screws 18 are tensioned with the force equivalent to the component of the upper horizontal force of the working platform 11. The work platform 11 has a hole at the chimney ladder passage 19, outside of which the platform 11 is enlarged by the segment 20 built from the same elements as the other part of stage 11. It is also possible to hang up other known stages 21 in place of the work platform 11 shown in the description.

Anlage zum Abbruch der Schornsteine, besonders der konvergenten Schornsteine, wird auf die Schornsteinskrone mit den Seilaufzügen, eventuell mit anderen zugänglichen Mitteln aufgezogen. Mit den Wagen 4 des unteren Trägers 1 regulierend, wird die Anlage auf die Schornsteinskrone 7 mit Hilfe der, mit Füssen 6 versehenen Stützen 5 gesetzt. Weiterhin, mittels den mit den Wagen 8 verbundenen, am Überträger 2 bebauten Stützen 9 werden die Brecher 10 zur oberen Lage hochgezogen, und mit den Wagen 8 auf die Schornsteinskrone 7 gelenkt. Abbruch eines Schornsteinssegmentes in seinem ganzen Umfang erfolgt in zwei Etappen. In erster Etappe werden die Brecher 10 herabgesetzt und an Stelle, wo der Abbruch erfolgen soll, aufgestellt. Die Brecher 10 brechen bestimmte Schornsteinfragmente aus, wobei die Grösse des ausgebrochenen Fragmentes von Brecherkonstruktion 10 abhängt. Danach rotiert der Oberträger 2 zusammen mit den Brechern 10 der Schornsteinskrone 7 gegenüber, um solche Winkelgrösse, die die Brecheraufstellung 10 am anliegenden, zum Abbruch vorgesehenen Fragment der Schornsteinskrone 7 versichert. Dasselbe Verfahren wird mehrmals wiederholt, bis die weiteren, zwischen den Stützen 5 liegenden Fragmente der Schornsteinskrone 7 abgebrochen werden. Nach Ausbruch dieser Fragmente, in zweiter Etappe werden die Stützen 9 auf die Schornsteinskrone 7 gesenkt, und der Oberträger 2 übernimmt zeitweise zusammen mit den Brechern 10 Funktion einer Stütze, dagegen rotiert der untere Träger 1 um einen bestimmten Winkel so, dass sich seine Stützen 5 zusammen mit Füssen 6 auf den Fragmenten der vorher abgebrochenen Schornsteinskrone 7 stützen. Danach rotiert der Oberträger 2 und versetzt die Brecher auf die Abschnitte noch nicht abgebrochener Schornsteinskrone 7, wo der Abbruch des übriggebliebenen Teile der Schornsteinumfangsfragmente erfolgt. Weiterhin wird die Anlage auf das nächste Niveau versetzt, wo der ähnliche, aus den o.g. zwei Etappen bestehende Abbruchzyklus erfolgt. Diese Zyklen werden bis zum völligen Abbruch des ganzen Schornsteines wiederholt.The chimney demolition system, especially the convergent chimneys, is installed on the chimney top with the cable lifts, possibly with other accessible means. Regulating with the carriage 4 of the lower beam 1, the system is placed on the chimney crown 7 with the help of the supports 5 provided with feet 6. Furthermore, by means of the supports 9 connected to the carriages 8 and built on the transmitter 2, the breakers 10 are pulled up to the upper position, and are guided with the carriages 8 onto the chimney crown 7. The entire demolition of a chimney segment takes place in two stages. In the first stage, the crusher 10 is lowered and set up where the demolition is to take place. The breakers 10 break out certain chimney fragments, the size of the broken fragment depending on the breaker construction 10. Then the upper beam 2 rotates together with the crusher 10 opposite the chimney crown 7 by such an angular size that the crusher installation 10 insures on the adjacent fragment of the chimney crown 7 provided for demolition. The same procedure is repeated several times until the further fragments of the chimney crown 7 lying between the supports 5 are broken off. After these fragments have been broken out, the supports 9 are lowered onto the chimney crown 7 in the second stage, and the upper support 2 temporarily takes on the function of a support together with the crushers 10, whereas the lower support 1 rotates through a certain angle so that it is Support supports 5 together with feet 6 on the fragments of the previously broken chimney crown 7. The upper beam 2 then rotates and moves the crusher onto the sections of chimney crown 7 which have not yet broken off, where the remaining parts of the chimney circumference fragments are broken off. Furthermore, the plant will be moved to the next level, where the similar demolition cycle consisting of the above two stages will take place. These cycles are repeated until the entire chimney is completely demolished.

Aufstellung der verwendeten BezugszeichenList of the reference numerals used

1.1.
Unterer TrägerLower beam
2.2nd
Obere TrägerUpper straps
3.3rd
KreislagerDistrict camp
4.4th
Wagendare
5.5.
Stützesupport
6.6.
FussFoot
7.7.
SchornsteinskroneChimney crown
8.8th.
Wagendare
9.9.
Stützesupport
10.10th
BrecherCrusher
11.11.
ArbeitsbühneWorking platform
12.12.
StabRod
13.13.
Seilrope
14.14.
RadialträgerRadial support
15.15.
Rollerole
16.16.
Flaschebottle
17.17th
Seilrope
18.18th
SpannschraubeClamping screw
19.19th
SchornsteinsleiterdurchgangsstelleChimney ladder passage
20.20th
Segmentsegment
21.21st
Bühnestage

Claims (4)

  1. Installation for the demolition of chimneys, in particular of convergent chimneys, which possesses breakers (10) and a working platform (11), characterised in that it consists of the lower (1) and upper beams (2) which are connected rotatably to one another, there being arranged on the lower beam (1) radially displaceable carriages (4) with supports (5) which end from below with vertically moveable feet (6) which are supported on chimney top (7), on which the working platform (11) is suspended, that on the upper beam (2) radially displaceable carriages (8) with supports (9) are also arranged, there being suspended on the carriage (8) the breakers (10), and that the axis of rotation (3) of the beams is located in the centre line of the chimney.
  2. Installation according to claim 1, characterised in that the lower beam (1) together with the upper beam (2) have the form of a two-arm structure dividing symmetrically the cross-section of the chimney.
  3. Installation according to claim 1, characterised in that the lower beam (1) together with the upper beam (2) have the form of a three-arm structure whose arms are all displaced by 120°.
  4. Installation according to claim 1, characterised in that the working platform (11) is composed of the members (12) hinged longitudinally and cross-wise over the whole periphery of the chimney top (7), and possesses in the lower part standing against the wall rollers (15) and in the upper, external part pulleys (16) with cable (17) or cable with tightening screws (18), while at the point of the chimney ladder crossover (19) there is located a hole outside of which the working platform (11) is extended by the segment (20), composed of the same elements as the other part of the working platform (11).
EP88120748A 1987-12-15 1988-12-12 Wrecking arrangement for chimneys, particularly for convergent chimneys Expired - Lifetime EP0320855B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL269520 1987-12-15
PL26952087A PL158978B1 (en) 1987-12-15 1987-12-15 Working platform for demolishing reinforced concrete chimneys,especially converging chimneys
PL274623 1988-09-12
PL27462388A PL160021B1 (en) 1988-09-12 1988-09-12 Apparatus for demolishing chimneys in particular tepering ones

Publications (3)

Publication Number Publication Date
EP0320855A2 EP0320855A2 (en) 1989-06-21
EP0320855A3 EP0320855A3 (en) 1989-09-20
EP0320855B1 true EP0320855B1 (en) 1992-07-08

Family

ID=26653041

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120748A Expired - Lifetime EP0320855B1 (en) 1987-12-15 1988-12-12 Wrecking arrangement for chimneys, particularly for convergent chimneys

Country Status (2)

Country Link
EP (1) EP0320855B1 (en)
DE (1) DE3872682D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678311B1 (en) * 1991-06-25 1993-10-29 Morel Sa TOOL, METHOD AND MATERIAL FOR DEMOLITION OF WALLS, ESPECIALLY CHIMNEYS.
DE29812795U1 (en) 1998-07-17 1998-12-03 Ostermeyer Anbautechnik Gmbh Device for breaking off a structure having a circumferential wall, such as a chimney or a cooling tower
CN103556862B (en) * 2013-10-29 2016-01-20 中国电力工程顾问集团华东电力设计院有限公司 Multitube suspension type chimney internal cylinder system of support structures
CN109468955B (en) * 2018-11-12 2021-06-01 湖南金海钢结构有限公司 Large-scale truss demolishs frock

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1434526A1 (en) * 1964-01-23 1968-12-19 Wayss & Freytag Ag Sliding formwork for structures with conical walls
EP0133630A1 (en) * 1983-08-05 1985-03-06 W.B. Black & Sons (Holdings) Limited Improvements in the piecemeal demolition of chimneys
DE3635597C2 (en) * 1986-10-20 1996-08-29 Michael Barnsteiner Device for demolishing chimneys or the like and method for assembling the device

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EP0320855A3 (en) 1989-09-20
DE3872682D1 (en) 1992-08-13
EP0320855A2 (en) 1989-06-21

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