EP0320445B1 - Implements for pulling down walls, concrete floors and the like - Google Patents

Implements for pulling down walls, concrete floors and the like Download PDF

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Publication number
EP0320445B1
EP0320445B1 EP88810803A EP88810803A EP0320445B1 EP 0320445 B1 EP0320445 B1 EP 0320445B1 EP 88810803 A EP88810803 A EP 88810803A EP 88810803 A EP88810803 A EP 88810803A EP 0320445 B1 EP0320445 B1 EP 0320445B1
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EP
European Patent Office
Prior art keywords
apparatus body
implements
implements according
hydraulic cylinder
pressure
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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
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EP88810803A
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German (de)
French (fr)
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EP0320445A3 (en
EP0320445A2 (en
Inventor
Hans Bieri
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Hydrostress AG
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Hydrostress AG
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Publication of EP0320445A3 publication Critical patent/EP0320445A3/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
    • E04G2023/086—Wrecking of buildings of tanks, reservoirs or the like

Definitions

  • the invention relates to a mining device for walls, concrete floors and the like. with an essentially bow-shaped device body, at the leg ends of which there are two tip bodies delimiting the mouth opening, at least one of which is movable against the other and interacts with a double-acting hydraulic cylinder, the hydraulic cylinder being connected to a hydraulic high-pressure source via hose connections.
  • Compressed air chisels and the like are usually used to dismantle concrete walls. used.
  • the disadvantage is the strong noise, the unpleasant vibrations and the limited speed of degradation.
  • a demolition device for demolition of concrete buildings in which two hydraulically actuated, acute crushing cones are arranged on a U-shaped bracket to form an obtuse angle.
  • the bracket is solid to absorb the forces and not designed as a portable unit.
  • DE-A-23 59 313 shows a concrete crusher in which two opposing chisels are present in a machine frame, one of which one is driven by a worm, a worm wheel and a spindle. Due to its size and construction, this device is not portable.
  • the object to be achieved with the invention is to create such a light mining device that can still be carried by hand and, despite its comparatively low weight, the device body can reliably absorb the force required to break off concrete structures and act on the tips.
  • the device body has a C-shaped shape, is constructed in a lightweight construction using light metal and can be carried by hand, the tip bodies are arranged coaxially and are each supported in inner leg surfaces of the legs provided with bores.
  • the weight of such a hydraulically operated mining device can be kept so low that it can still be carried by hand.
  • the coaxial arrangement of the tip bodies and their support on ring shoulders at the end of the leg make it possible to control the forces that occur. Due to the portability of the mining device, its area of application is greatly expanded by the fact that it can also be used inside buildings, which prevents heavy devices, cranes, hoists or the like. need.
  • the removal device according to FIG. 1 contains a clamp-like, essentially C-shaped device body 1, the middle part of which has the largest dimension.
  • This device body 1 is preferably machined in one piece from a light metal plate.
  • the lightweight construction aims to save as much weight as possible while maintaining a high bending moment and high torsional rigidity.
  • the device body 1 is delimited on the outside and inside by a spar 2, 3, between which there is a central plate part 4.
  • a plurality of reinforcing ribs 5 protrude from the plate part 4 on both sides, each ending in the inner and outer spar 2, 3.
  • the two pairs of ribs 5 extend parallel to the longitudinal central axis 7 or are slightly inclined to it.
  • the reinforcing ribs 6 are shorter than the reinforcing ribs 5 and extend transversely to the longitudinal central axis 7. Both the two spars 2, 3 and the reinforcing ribs 5, 6 are provided on the outside and inside with a reinforcing web 8, 9 as shown in FIGS. 4 and 5. This ensures a high level of flexural rigidity and Torsional rigidity of the entire device body 1 reached.
  • the device body is circumferentially closed at one leg end and has a bore 10 for receiving a hydraulic device.
  • the other leg has a similar design, with the difference that the wall is slotted and contains at least one screw in order to contract the bore when the tip body 17 is inserted.
  • the two legs 12, 13 of the essentially C-shaped device body 1 form a mouth opening 14 which is delimited by the two tips 15, 16 arranged on the same axis.
  • One tip body 17 sits rigidly but releasably in the bore of the leg 12, while the other tip body 18 is received by the bore 10 and the hydraulic cylinder 22 including the tip 16 is movable.
  • the tip body 17 contains one or more spacer rings 19, which are located between the inner leg surface 12 and a shoulder 20 of the tip body 17 and sit on a cylindrical shaft 31 which penetrates the bore of the device body.
  • the other tip body 18 cooperates with a hydraulic cylinder 21, which can move the tip 16 in the direction of the other tip 15.
  • the hydraulic cylinder 21, with which the tip body 18 can be moved back and forth, is thus double-acting.
  • the high-pressure liquid is controlled by a control slide 3 rigidly mounted on the device body and having an actuating handle 24.
  • the hydraulic cylinder contains a cylindrical sleeve 25 which is received by the bore 10 of the device body 1.
  • the rear end of this sleeve 25 is surrounded by a bush 26 and sealed by a screwed cover 30.
  • a guide bushing 27 is inserted into the bore 10.
  • a piston rod 34 is connected to the tip 16, the end of which forms a piston 36.
  • Piston 36, piston rod 34 and tip 34 can either consist of one or more interconnected parts.
  • a first pressure chamber 28 is delimited by the piston 36, the sleeve 25 and the cover 30.
  • a second, annular pressure chamber 38 is formed between the piston 36, the piston rod 34 and the sleeve bore 25.
  • the supply of high-pressure liquid to the first pressure chamber 28 takes place through a feed line 40 in the cover 30. If the supply of pressure liquid into the first pressure chamber 28 is opened by the control slide 23, this causes the piston 36 to be moved in the direction of arrow B. At the same time, liquid is displaced from the second pressure chamber 38, which flows off without pressure via a line 42.
  • the control slide 23 is switched accordingly, as a result of which the line 42 and the second pressure chamber 38 now contain pressure fluid and the liquid present in the first pressure chamber 28 is displaced via the line 40.
  • An overpressure valve 44 prevents an inadmissible overpressure from occurring in the end position of the piston 36 shown.
  • the second pressure chamber 38 is in flow connection with a ball valve via a radial bore 46.
  • the ball 48 is so strongly loaded by a spring 50 that any excess pressure in the second pressure chamber 38 is released via the first pressure chamber 28.
  • the spring force at which this safety valve opens can be adjusted by means of a screw 52.
  • the connection between the control slide 23 and the connection nipples 58 is made by hoses or pipes 60.
  • the connection sleeves for the hoses for supplying the high pressure liquid to the control slide 23 are located on the side of the device facing away from FIG. 1.
  • the high-pressure source preferably consists of a mobile, motor-driven high-pressure pump, which is connected to the remote device body 1 via pressure-resistant hoses and detachable hose couplings are. Since the pressure source is thus separated from the device, it can be designed so easily that it can be carried by a man.
  • the holding frame 62 contains rounded profile bars 63, which are preferably made of light metal. These are attached on both sides of the device body 1 and are held in place by screwed-on connecting rods 66, two of which penetrate holes 32 in the device body 1. Since the scaffolding 62 projects beyond the outside of the device body, the device can easily be brought into the desired working position by hand and held there.
  • the device is placed with its mouth 14 by hand from above onto the wall. Then, by operating the control slide 23 by means of the operating handle 24, high pressure liquid, preferably pressure oil, e.g. admitted into the first pressure chamber 28 at a pressure of approximately 800 bar. As a result, the piston 36 and with it the tip 16 move in the direction of the arrow B. As a result, the two tips 15 and 16 penetrate the wall with great force until the latter splits. By moving the control slide 23, the tip 16 is then withdrawn through the second pressure chamber of the hydraulic device 22, whereupon the device can be pushed to a next location, after which the process can be repeated.
  • high pressure liquid preferably pressure oil, e.g. admitted into the first pressure chamber 28 at a pressure of approximately 800 bar.
  • this mining device has a jaw opening of less than 40 cm, preferably about 30 cm, measured between the tips 15, the weight of the entire device is less than 50 kg, preferably about 45 kg, and that which can be produced between the tips 15, 16
  • the force at a hydraulic fluid pressure of 78 MPa (780 bar) is approximately 30 tons.
  • both tips with a hydraulic cylinder, which are connected to the same high-pressure source and operated by the same control elements, so that they move synchronously towards or away from each other.
  • the total stroke length of the tips can be increased.
  • the device is portable, it can also be used on hoists, excavator extension arms or the like. fasten.

Description

Die Erfindung bezieht sich auf ein Abbaugerät für Mauern, Betonböden u.dgl. mit einem im wesentlichen bügelförmigen Gerätekörper, an dessen Schenkelenden sich zwei die Maulöffnung begrenzende Spitzenkörper befinden, von denen mindestens der eine gegen den anderen bewegbar ist und mit einem doppelwirkenden Hydraulikzylinder zusammenwirkt, wobei der Hydraulikzylinder über Schlauchverbindungen an eine hydraulische Hochdruckquelle angeschlossen ist.The invention relates to a mining device for walls, concrete floors and the like. with an essentially bow-shaped device body, at the leg ends of which there are two tip bodies delimiting the mouth opening, at least one of which is movable against the other and interacts with a double-acting hydraulic cylinder, the hydraulic cylinder being connected to a hydraulic high-pressure source via hose connections.

Zum Abbau von Beton-Mauern werden üblicherweise Pressluftmeissel u.dgl. verwendet. Nachteilig ist dabei die starke Geräuschentwicklung, die unangenehmen Vibrationen und die beschränkte Abbaugeschwindigkeit.Compressed air chisels and the like are usually used to dismantle concrete walls. used. The disadvantage is the strong noise, the unpleasant vibrations and the limited speed of degradation.

Aus der DE-A-35 41 786 ist eine Abreissvorrichtung zum Abbruch von Betonbauten bekannt, bei der an einer U-förmigen Halterung zwei zueinander einen stumpfen Winkel bildende, hydraulisch betätigte, spitze Brechkegel angeordnet sind. Die Halterung ist zur Aufnahme der Kräfte massiv und nicht als tragbare Einheit ausgebildet.From DE-A-35 41 786 a demolition device for demolition of concrete buildings is known, in which two hydraulically actuated, acute crushing cones are arranged on a U-shaped bracket to form an obtuse angle. The bracket is solid to absorb the forces and not designed as a portable unit.

Ferner geht aus der DE-A-23 59 313 ein Betonbrecher hervor, bei dem in einem Maschinenrahmen zwei gegeneinander gerichtete Meissel vorhanden sind, von denen der eine über eine Schnecke, ein Schneckenrad und eine Spindel angetrieben wird. Dieses Gerät ist infolge seiner Grösse und dem konstruktiven Aufbau nicht tragbar.Furthermore, DE-A-23 59 313 shows a concrete crusher in which two opposing chisels are present in a machine frame, one of which one is driven by a worm, a worm wheel and a spindle. Due to its size and construction, this device is not portable.

Die mit der Erfindung zu lösende Aufgabe besteht in der Schaffung eines so leichten Abbaugerätes, das noch von Hand tragbar ist und der Gerätekörper trotz seines vergleichsweise geringen Gewichtes die zum Abbruch von Betongebilden erforderliche, auf die Spitzen einwirkende Kraft zuverlässig aufnehmen kann.The object to be achieved with the invention is to create such a light mining device that can still be carried by hand and, despite its comparatively low weight, the device body can reliably absorb the force required to break off concrete structures and act on the tips.

Diese Aufgabe wird dadurch gelöst, dass der Gerätekörper eine C-förmige Gestalt hat, in Leichtbauweise unter Verwendung von Leichtmetall ausgebildet und von Hand tragbar ist, die Spitzenkörper gleichachsig angeordnet und je in mit Bohrungen versehenen inneren Schenkelflächen der Schenkel enden abgestützt sind.This object is achieved in that the device body has a C-shaped shape, is constructed in a lightweight construction using light metal and can be carried by hand, the tip bodies are arranged coaxially and are each supported in inner leg surfaces of the legs provided with bores.

Durch die Leichtbauweise des Gerätekörpers gelingt es, das Gewicht eines solchen hydraulisch betätigten Abbaugerätes so gering zu halten, dass es noch von Hand tragbar ist. Durch die gleichachsige Anordnung der Spitzenkörper und deren Abstützung an Ringschultern am Schenkelende gelingt es, die auftretenden Kräfte zu beherrschen. Durch die Tragbarkeit des Abbaugerätes wird sein Anwendungsbereich stark erweitert, indem es auch im Innern von Gebäuden eingesetzt werden kann, was schweren Geräten verwehrt ist, die Krane, Hebezeuge od.dgl. benötigen.Due to the lightweight construction of the device body, the weight of such a hydraulically operated mining device can be kept so low that it can still be carried by hand. The coaxial arrangement of the tip bodies and their support on ring shoulders at the end of the leg make it possible to control the forces that occur. Due to the portability of the mining device, its area of application is greatly expanded by the fact that it can also be used inside buildings, which prevents heavy devices, cranes, hoists or the like. need.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt. Es zeigen:

  • Fig. 1 Eine Seitenansicht des Gerätes
  • Fig. 2 Einen Teilschnitt durch den am Gerät befestigten Hydraulikzylinder samt Spitzenkörper
  • Fig. 3 Eine Ansicht des Gerätes mit Haltegerüst
  • Fig. 4 Einen Schnitt nach der Linie IV-IV in Fig. 1
  • Fig. 5 Einen Schnitt nach der Linie V-V in Fig. 1
  • Fig. 6 Eine Ansicht des den Hydraulikzylinder aufnehmenden Schenkels des Gerätekörpers in Richtung des Pfeiles A in Fig. 2
In the drawing, an embodiment of the subject of the invention is shown. Show it:
  • Fig. 1 is a side view of the device
  • Fig. 2 A partial section through the hydraulic cylinder attached to the device including the tip body
  • Fig. 3 A view of the device with a scaffold
  • 4 shows a section along the line IV-IV in FIG. 1st
  • 5 shows a section along the line VV in Fig. 1st
  • 6 is a view of the leg of the device body receiving the hydraulic cylinder in the direction of arrow A in FIG. 2

Das Abbaugerät gemäss Figur 1 enthält einen zwingenartigen, im wesentlichen C-förmigen Gerätekörper 1, dessen Mittelteil die grösste Abmessung aufweist. Dieser Gerätekörper 1 wird vorzugsweise einstückig aus einer Leichtmetallplatte herausgearbeitet. Durch die Leichtbauweise wird eine möglichst grosse Gewichteinsparung bei gleichzeitig hohem Biege-Widerstandsmoment und hoher Verwindungssteifigkeit angestrebt. Zu diesem Zweck ist der Gerätekörper 1 aussen und innen je durch einen Holm 2,3 begrenzt, zwischen denen sich ein mittiger Plattenteil 4 befindet. Vom Plattenteil 4 ragen beidseitig mehrere Verstärkungsrippen 5 ab, die jeweils im inneren und äusseren Holm 2,3 endigen. Die beiden Rippenpaare 5 erstrecken sich zur Längsmittelachse 7 parallel oder sind zu dieser leicht geneigt. Die Verstärkungsrippen 6 sind kürzer als die Verstärkungsrippen 5 und verlaufen quer zur Längsmittelachse 7. Sowohl die beiden Holme 2,3 als auch die Verstärkungsrippen 5,6 sind gemäss Fig. 4 und 5 aussen und innen je mit einem Verstärkungssteg 8,9 versehen. Dadurch wird eine hohe Biegesteifigkeit und Verwindungssteifigkeit des ganzen Gerätekörpers 1 erreicht. Wie aus Figur 6 hervorgeht, ist der Gerätekörper am einen Schenkelende umfangsgeschlossen und weist eine Bohrung 10 zur Aufnahme eines Hydraulikgerätes auf. Der andere Schenkel ist ähnlich ausgebildet mit dem Unterschied, dass die Wandung geschlitzt ist und mindestens eine Schraube enthält um die Bohrung bei eingesetztem Spitzenkörper 17 zusammenzuziehen.The removal device according to FIG. 1 contains a clamp-like, essentially C-shaped device body 1, the middle part of which has the largest dimension. This device body 1 is preferably machined in one piece from a light metal plate. The lightweight construction aims to save as much weight as possible while maintaining a high bending moment and high torsional rigidity. For this purpose, the device body 1 is delimited on the outside and inside by a spar 2, 3, between which there is a central plate part 4. A plurality of reinforcing ribs 5 protrude from the plate part 4 on both sides, each ending in the inner and outer spar 2, 3. The two pairs of ribs 5 extend parallel to the longitudinal central axis 7 or are slightly inclined to it. The reinforcing ribs 6 are shorter than the reinforcing ribs 5 and extend transversely to the longitudinal central axis 7. Both the two spars 2, 3 and the reinforcing ribs 5, 6 are provided on the outside and inside with a reinforcing web 8, 9 as shown in FIGS. 4 and 5. This ensures a high level of flexural rigidity and Torsional rigidity of the entire device body 1 reached. As can be seen from FIG. 6, the device body is circumferentially closed at one leg end and has a bore 10 for receiving a hydraulic device. The other leg has a similar design, with the difference that the wall is slotted and contains at least one screw in order to contract the bore when the tip body 17 is inserted.

Die beiden Schenkel 12,13 des im wesentlichen C-förmigen Gerätekörpers 1 bilden eine Maulöffnung 14, die durch die beiden gleichachsig angeordneten Spitzen 15,16 begrenzt ist. Der eine Spitzenkörper 17 sitzt starr aber lösbar in der Bohrung des Schenkels 12, während der andere Spitzenkörper 18 von der Bohrung 10 aufgenommen wird und dessen Hydraulikzylinder 22 samt Spitze 16 beweglich ist. Zur Veränderung der Maulöffnung 14 enthält der Spitzenkörper 17 einen oder mehrere Distanzringe 19, welche sich zwischen der innern Schenkelfläche 12 und einer Schulter 20 des Spitzenkörpers 17 befinden und auf einem zylindrischen Schaft 31 sitzen, der die Bohrung des Gerätekörpers durchdringt.The two legs 12, 13 of the essentially C-shaped device body 1 form a mouth opening 14 which is delimited by the two tips 15, 16 arranged on the same axis. One tip body 17 sits rigidly but releasably in the bore of the leg 12, while the other tip body 18 is received by the bore 10 and the hydraulic cylinder 22 including the tip 16 is movable. To change the mouth opening 14, the tip body 17 contains one or more spacer rings 19, which are located between the inner leg surface 12 and a shoulder 20 of the tip body 17 and sit on a cylindrical shaft 31 which penetrates the bore of the device body.

Der andere Spitzenkörper 18 wirkt mit einem Hydraulikzylinder 21 zusammen, welcher die Spitze 16 in Richtung der anderen Spitze 15 verschieben kann.The other tip body 18 cooperates with a hydraulic cylinder 21, which can move the tip 16 in the direction of the other tip 15.

Der Hydraulikzylinder 21, mit welchem der Spitzenkörper 18 vor- und zurückbewegt werden kann, ist somit doppelwirkend ausgebildet. Die Steuerung der Hochdruckflüssigkeit erfolgt durch einen am Gerätekörper starr montierten Steuerschieber 3 mit Betätigungsgriff 24.The hydraulic cylinder 21, with which the tip body 18 can be moved back and forth, is thus double-acting. The high-pressure liquid is controlled by a control slide 3 rigidly mounted on the device body and having an actuating handle 24.

Wie aus Figur 2 hervorgeht, enthält der Hydraulikzylinder eine zylindrische Hülse 25, die von der Bohrung 10 des Gerätekörpers 1 aufgenommen wird. Das hintere Ende dieser Hülse 25 wird von einer Buchse 26 umgeben und durch einen eingeschraubten Deckel 30 dicht abgeschlossen. Am spitzenseitigen Ende ist in die Bohrung 10 eine Führungsbuchse 27 eingesetzt.As can be seen from FIG. 2, the hydraulic cylinder contains a cylindrical sleeve 25 which is received by the bore 10 of the device body 1. The rear end of this sleeve 25 is surrounded by a bush 26 and sealed by a screwed cover 30. At the tip end, a guide bushing 27 is inserted into the bore 10.

Mit der Spitze 16 ist eine Kolbenstange 34 verbunden, dessen Ende ein Kolben 36 bildet. Kolben 36, Kolbenstange 34 und Spitze 34 können entweder aus einem oder mehreren miteinander verbundenen Teilen bestehen. Ein erster Druckraum 28 wird begrenzt durch den Kolben 36, der Hülse 25 und dem Deckel 30. Zwischen dem Kolben 36, der Kolbenstange 34 sowie der Hülsenbohrung 25 wird ein zweiter, ringförmiger Druckraum 38 gebildet. Die Zufuhr von Hochdruckflüssigkeit zum ersten Druckraum 28 erfolgt durch eine Zuleitung 40 im Deckel 30. Wenn durch den Steuerschieber 23 die Zufuhr von Druckflüssigkeit in den ersten Druckraum 28 geöffnet wird, bewirkt dies, dass der Kolben 36 in Richtung des Pfeiles B bewegt wird. Gleichzeitig wird Flüssigkeit aus dem zweiten Druckraum 38 verdrängt, welche über eine Leitung 42 drucklos abfliesst. Für die Bewegung in der Gegenrichtung wird der Steuerschieber 23 entsprechend umgestellt, wodurch nun die Leitung 42 und der zweite Druckraum 38 Druckflüssigkeit enthält und die im ersten Druckraum 28 vorhandene Flüssigkeit über die Leitung 40 verdrängt wird. Ein Ueberdruckventil 44 verhindert, dass in der dargestellten Endlage des Kolbens 36 ein unzulässiger Ueberdruck entstehen kann. Zu diesem Zweck steht der zweite Druckraum 38 über eine radiale Bohrung 46 mit einem Kugelventil in Durchflussverbindung. Die Kugel 48 ist durch eine Feder 50 so stark belastet, dass ein allfälliger Ueberdruck im zweiten Druckraum 38 über den ersten Druckraum 28 abgelassen wird. Die Federkraft bei der sich dieses Sicherheitsventil öffnet, lässt sich durch eine Schraube 52 einstellen.A piston rod 34 is connected to the tip 16, the end of which forms a piston 36. Piston 36, piston rod 34 and tip 34 can either consist of one or more interconnected parts. A first pressure chamber 28 is delimited by the piston 36, the sleeve 25 and the cover 30. A second, annular pressure chamber 38 is formed between the piston 36, the piston rod 34 and the sleeve bore 25. The supply of high-pressure liquid to the first pressure chamber 28 takes place through a feed line 40 in the cover 30. If the supply of pressure liquid into the first pressure chamber 28 is opened by the control slide 23, this causes the piston 36 to be moved in the direction of arrow B. At the same time, liquid is displaced from the second pressure chamber 38, which flows off without pressure via a line 42. For the movement in the opposite direction, the control slide 23 is switched accordingly, as a result of which the line 42 and the second pressure chamber 38 now contain pressure fluid and the liquid present in the first pressure chamber 28 is displaced via the line 40. An overpressure valve 44 prevents an inadmissible overpressure from occurring in the end position of the piston 36 shown. For this purpose, the second pressure chamber 38 is in flow connection with a ball valve via a radial bore 46. The ball 48 is so strongly loaded by a spring 50 that any excess pressure in the second pressure chamber 38 is released via the first pressure chamber 28. The spring force at which this safety valve opens can be adjusted by means of a screw 52.

Zur Abdichtung der Hochdruckflüssigkeit sind im Kolben, im Deckel und in der Hülse Dichtungen 54 und 56 vorhanden. Die Verbindung zwischen dem Steuerschieber 23 und den Anschlussnippeln 58 erfolgt durch Schläuche oder Rohre 60. Die Anschlussmuffen für die Schläuche zur Zufuhr der Hochdruckflüssigkeit zum Steuerschieber 23 befinden sich auf der in Fig. 1 abgewandten Seite des Gerätes. Die Hochdruckquelle besteht vorzugsweise aus einer fahrbaren, motorisch angetriebenen Hochdruck-Pumpe, die über druckfeste Schläuche und lösbare Schlauchkupplungen mit dem entfernt angeordneten Gerätekörper 1 verbunden sind. Da somit die Druckquelle vom Gerät getrennt ist, kann es so leicht ausgebildet werden, dass es von einem Mann tragbar ist.Seals 54 and 56 are provided in the piston, in the cover and in the sleeve to seal the high-pressure liquid. The connection between the control slide 23 and the connection nipples 58 is made by hoses or pipes 60. The connection sleeves for the hoses for supplying the high pressure liquid to the control slide 23 are located on the side of the device facing away from FIG. 1. The high-pressure source preferably consists of a mobile, motor-driven high-pressure pump, which is connected to the remote device body 1 via pressure-resistant hoses and detachable hose couplings are. Since the pressure source is thus separated from the device, it can be designed so easily that it can be carried by a man.

Zum sicheren Halten des Gerätes an einer Abbruchstelle ist dieses von einem Haltegerüst 62 umgeben, wie dies aus Fig. 3 hervorgeht. Das Haltegerüst 62 enthält abgerundete Profilstäbe 63, die vorzugsweise aus Leichtmetall bestehen. Diese sind beidseitig des Gerätekörpers 1 angebracht und durch angeschraubte Verbindungsstangen 66 festgehalten, von denen zwei Bohrungen 32 im Gerätekörper 1 durchdringen. Da das Haltegerüst 62 den Gerätekörper aussen überragt, lässt sich das Gerät von Hand leicht in die gewünschte Arbeitsposition bringen und in dieser festhalten.To hold the device securely at a demolition point, it is surrounded by a holding frame 62, as can be seen in FIG. 3. The holding frame 62 contains rounded profile bars 63, which are preferably made of light metal. These are attached on both sides of the device body 1 and are held in place by screwed-on connecting rods 66, two of which penetrate holes 32 in the device body 1. Since the scaffolding 62 projects beyond the outside of the device body, the device can easily be brought into the desired working position by hand and held there.

Um eine Betonmauer od.dgl. abzubrechen, wird das Gerät mit seiner Maulöffnung 14 von Hand von oben auf die Mauer aufgesetzt. Hernach wird durch Betätigung des Steuerschiebers 23 mittels des Betätigungsgriffes 24 Hochdruckflüssigkeit, vorzugsweise Drucköl, z.B. mit einem Druck von etwa 800 bar in den ersten Druckraum 28 eingelassen. Dadurch bewegt sich der Kolben 36 und mit diesem die Spitze 16 in Richtung des Pfeiles B. Als Folge davon dringen die beiden Spitzen 15 und 16 mit grosser Kraft in die Mauer ein bis sich diese spaltet. Durch Umstellen des Steuerschiebers 23 wird hernach die Spitze 16 durch den zweiten Druckraum des Hydraulikgerätes 22 zurückgezogen, worauf das Gerät an eine nächste Stelle nachgeschoben werden kann worauf sich der Vorgang wiederholen lässt.To a concrete wall or the like. cancel, the device is placed with its mouth 14 by hand from above onto the wall. Then, by operating the control slide 23 by means of the operating handle 24, high pressure liquid, preferably pressure oil, e.g. admitted into the first pressure chamber 28 at a pressure of approximately 800 bar. As a result, the piston 36 and with it the tip 16 move in the direction of the arrow B. As a result, the two tips 15 and 16 penetrate the wall with great force until the latter splits. By moving the control slide 23, the tip 16 is then withdrawn through the second pressure chamber of the hydraulic device 22, whereupon the device can be pushed to a next location, after which the process can be repeated.

Bei einer praktisch realisierten Ausführungsform hat dieses Abbaugerät eine zwischen den Spitzen 15 gemessene Maulöffnung von weniger als 40 cm, vorzugsweise etwa 30 cm, das Gewicht des ganzen Gerätes beträgt weniger als 50 kg, vorzugssweise etwa 45 kg und die zwischen den Spitzen 15,16 erzeugbare Kraft beträgt bei einem Druck der Hydraulikflüssigkeit von 78 MPa (780 bar) etwa 30 Tonnen.In a practically implemented embodiment, this mining device has a jaw opening of less than 40 cm, preferably about 30 cm, measured between the tips 15, the weight of the entire device is less than 50 kg, preferably about 45 kg, and that which can be produced between the tips 15, 16 The force at a hydraulic fluid pressure of 78 MPa (780 bar) is approximately 30 tons.

Es ist auch möglich, beide Spitzen mit einem Hydraulikzylinder auszurüsten, die an die gleiche Hochdruckquelle angeschlossen und von den gleichen Steuerorganen betätigt werden, sodass sie sich synchron aufeinander zu oder voneinander weg bewegen.It is also possible to equip both tips with a hydraulic cylinder, which are connected to the same high-pressure source and operated by the same control elements, so that they move synchronously towards or away from each other.

Bei sonst gleichen Verhältnissen lässt sich dadurch die Gesamt-Hublänge der Spitzen vergrössern.If the conditions are otherwise the same, the total stroke length of the tips can be increased.

Obschon das Gerät tragbar ist, lässt es sich wahlweise auch an Hebezeugen, Bagger-Auslegearmen od.dgl. befestigen.Although the device is portable, it can also be used on hoists, excavator extension arms or the like. fasten.

Claims (6)

1. Implements for pulling down walls, concrete floors and the like , with a substantially bow-shaped apparatus body (1), at the ends of the arms of which there are, bounding the jaw opening (14), pointed members (17, 18) of which at least one is adapted for movement towards the other and cooperates with a double-acting hydraulic cylinder (22), the hydraulic cylinder (22) being connected via hose connections to a hydraulic high-pressure source, characterised in that the apparatus body (1) is C-shaped, is of ligthtweight construction, light metal being used, and can be transported by hand, the pointed members (17, 18) are equiaxially disposed and are respectively supported in inner surfaces of the arm ends (12, 13) in which bores (10) are provided.
2. Implements according to Claim 1, characterised in that the apparatus body (1) consists of one piece, has undercut longitudinal and transverse ribs (5, 6) and contains a central plate part (4) surrounded by an outer and an inner chord (2).
3. Implements according to Claim 1 or 2, characterised in that at least one intermediate ring (19) is inserted between the inner arm face of one arm end (12) and the shoulder (20) of the pointed member (17).
4. Implements according to one of Claims 1 to 3, characterised in that on both sides of the apparatus body (1) is a holding framework (62) which engages over the said body.
5. Implements according to Claim 4, characterised in that the supporting framework (62) consists of profiled bars which are held together by connecting means which pass through the apparatus body (1).
6. Implements according to one of Claims 1 to 5, characterised in that a non-return valve (44) is incorporated between the two pressure chambers (28, 38) of the double-acting hydraulic cylinder (22).
EP88810803A 1987-12-09 1988-11-23 Implements for pulling down walls, concrete floors and the like Expired - Lifetime EP0320445B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4795/87 1987-12-09
CH479587 1987-12-09

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EP0320445A2 EP0320445A2 (en) 1989-06-14
EP0320445A3 EP0320445A3 (en) 1989-09-06
EP0320445B1 true EP0320445B1 (en) 1992-02-19

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EP88810803A Expired - Lifetime EP0320445B1 (en) 1987-12-09 1988-11-23 Implements for pulling down walls, concrete floors and the like

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EP (1) EP0320445B1 (en)
DE (1) DE3868495D1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004168A (en) * 1989-11-13 1991-04-02 Brian Purser Crushing apparatus
ATE97716T1 (en) * 1990-04-10 1993-12-15 Hydrostress Ag MOBILE, HYDRAULIC DRIVE UNIT.
DE4424740A1 (en) * 1994-07-13 1996-01-18 Schilling Ostermeyer Maschinen Concrete crushing pliers
US20080196706A1 (en) * 2007-02-20 2008-08-21 Triston Fowler Apparatus for cutting stone
US7743761B2 (en) * 2008-08-20 2010-06-29 Brill Investments, Llc Rock cutting and trimming device
CN106320738B (en) * 2016-08-17 2018-09-28 罗芳芳 A kind of safety-type wall fast dismounting device of finishing
CN112221561B (en) * 2020-09-24 2021-08-27 陕西翰翊环保科技有限公司 Blast furnace ironmaking slag treatment method

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Publication number Priority date Publication date Assignee Title
US2557098A (en) * 1948-05-03 1951-06-19 Von B Graham Shearing machine
AT215878B (en) * 1957-08-04 1961-06-26 Bohuslav Kubalek Device for splitting stones, in particular for producing paving stones
JPS535463B2 (en) * 1972-09-08 1978-02-27
IT999495B (en) * 1972-11-29 1976-02-20 Takenaka Komuten Co CONCRETE CRUSHER
US3980341A (en) * 1974-03-14 1976-09-14 National Research Development Corporation Breaking up of concrete surface layers or the like
JPS554416A (en) * 1978-06-23 1980-01-12 Watanabe Kaitai Kogyo Kk Cutter
US4203414A (en) * 1979-01-08 1980-05-20 Mcclain Harold F Stone cutting apparatus
CH649115A5 (en) * 1980-11-12 1985-04-30 Diaber Holding Ag DEVICE FOR TREATMENT OF PILES.
HUT43974A (en) * 1984-11-26 1988-01-28 Ildiko Jakab Slotting head

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EP0320445A3 (en) 1989-09-06
DE3868495D1 (en) 1992-03-26
US4932597A (en) 1990-06-12
EP0320445A2 (en) 1989-06-14

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