WO2000004255A1

WO2000004255A1 - Device for demolishing a building comprising a circular wall such as a smokestack or a cooling tower

Info

Publication number: WO2000004255A1
Application number: PCT/EP1999/005058
Authority: WO
Inventors: Thomas Ostermeyer
Original assignee: Ostermeyer Anbautechnik Gmbh
Priority date: 1998-07-17
Filing date: 1999-07-15
Publication date: 2000-01-27
Also published as: DE29812795U1

Abstract

The invention relates to a device for demolishing a building having a circular wall such as a smokestack or a cooling tower. The inventive device comprises a first multi-arm supporting part (1), a second multi-arm supporting part (2), a pivot bearing (3) which connects the first and second supporting parts such that they can turn with respect to one another. The inventive device also comprises at least one carriage (6, 7) which can be displaced on at least one of the arms of the supporting parts. According to the invention, the carriage can be selectively displaced and stopped in the longitudinal direction of the arm, and the carriage (6, 7) comprises a bearing having roller elements (14a, 14b) and clamping elements (15a, 15b). The invention is designed such that when the carriage (6, 7) tilts relative to the arm into a first relative position, the clamping elements (15a, 15b) engage with the arm in order to stop the carriage (6, 7). In addition, when the carriage tilts into a second relative position, the roller elements (14a, 14b) come in contact with the arm and detach the clamping elements (15a, 15b) from the arm in order to enable the carriage (6, 7) to be displaced.

Description

Device for breaking off a structure having a circumferential wall, such as a chimney or a cooling tower

The present invention relates to a device for breaking off a building having a circumferential wall, such as a chimney or a cooling tower, according to the preamble of claim 1 or 2 or 3.

A device according to the preamble of claim 1 or 2 or 3 is known from EP 0 320 855 A2. Other devices for breaking chimneys, each using a single excavator with a demolition tool that is placed or suspended on the top of the chimney by means of appropriate carriers or work platforms, are known from DE 36 35 597 AI and DE 38 39 677 AI.

Structural structures such as chimneys or cooling towers can be broken off by blasting the structures, for example. Another possibility, which is used in particular if the blasting cannot follow or can only follow with a considerable risk of damage to other buildings or the like, is the use of a device for breaking off the type mentioned above. It is an object of the present invention to provide a device for

To indicate a building having a circumferential wall to be broken off, with which such a demolition is possible in an improved manner.

This object is achieved by a device according to claim 1 or 2 or 3.

Developments of the invention are specified in the subclaims.

In particular, the invention makes it possible to selectively move or lock the devices required to place or support the device and the devices required to break off the building in a simple manner. The invention further enables the size of the device to be easily adapted to the diameter of the building to be demolished. In addition, the device can be easily transported to the upper edge of the building to be demolished.

Further features and advantages of the invention result from the description of an embodiment with reference to the figures. From the figures show:

Figure la shows an embodiment of the device for breaking off a building having a circumferential wall, which is placed in the working position on a chimney.

Fig. Lb is an enlarged view of an embodiment of the storage of a carriage;

Figure 2 shows the embodiment of the device which is being pulled up from the bottom of the chimney by means of ropes; 3 shows a side, partially sectioned view of the embodiment of the device which has just been pulled up to the crown of the chimney;

FIG. 4 shows a plan view of the device in the position from FIG. 3; and

Fig. 5a and b is a schematic representation of the demolition process with a concrete crusher (a) and a concrete hammer (b).

An embodiment of the device for breaking off a building having a circumferential wall, such as a chimney or a cooling tower, is shown in FIG. 1 in a working position. The device has a first support part 1 and a second support part 2, which are star-shaped or multi-armed and each have three arms in the embodiment shown. The first carrier part 1 and the second carrier part 2 are centrally connected to one another via a rotary bearing 3 in such a way that the first and the second carrier part can be rotated relative to one another. In the embodiment shown, the first and the second carrier part 1, 2 can be extended or shortened at the ends of their respective arms by adding or removing segment parts 4. The segment parts 4 and the arms of the two carrier parts 1, 2 have a cross section of an isosceles triangle in the described embodiment (see FIG. 3) and are used in the carrier parts 1, 2 with the tip between the same legs downwards. The segment parts 4 consist of longitudinal struts 13, which are formed from square tubes and are connected to one another by transverse struts 30, and are connected to one another at the ends of the longitudinal struts 13 or to the carrier parts 1, 2 at connection points 5. This connection at the connection points 5 can be carried out by flanges, bolt connections, screw connections or the like. The carrier parts 1, 2 and the associated segment parts 4 are each designed such that at least the longitudinal struts 13 are formed as rails 13 on their upper side are on which carriages 6 and 7 are selectively displaceable and lockable. The carriages 6, which are selectively displaceable and lockable on the arms of the first carrier part 1 and the associated segment parts 4, as seen in the direction of the axis of rotation of the rotary bearing 3, each carry a working device 7, hereinafter referred to as an excavator, each having an arm 8 , on which a tool 9a, 9b can be fastened and operated. The slides 7, which are selectively displaceable and lockable on the arms of the second support part 2 and the associated segment parts 4, as seen in the direction of the axis of rotation of the rotary bearing 3, are each in the form of a support element 10 which has a support head at its outer end 11 with a bearing surface 12 and a nose 31 directed downward.

Fig. Lb shows an enlarged view of the design and arrangement of the carriage 7 on the second carrier part 2. The carriage 7 has a bearing, by means of which the carriage 7 or the associated support element 10 on the two rails 13, each with an upper (first ) and a second (lower) tread, which are part of the second carrier part 2 or the corresponding segment parts 4, is mounted. The bearing has two rolling elements 14a and 14b designed as rollers or wheels per rail and two clamping elements 15a and 15b designed as immovable tubes, wedges or the like. One rolling element 14a is arranged above the rail 13 and thus above the first running surface, and the other rolling element 14b is arranged at a distance in the longitudinal direction of the rail 13 from the rolling element 14a below the rail 13 and thus below the second running surface. In the vicinity of the one rolling element 14a, one of the clamping elements 15a is arranged below the rail 13 and thus under the second running surface. The other clamping element 15b is arranged in the vicinity of the other rolling element 14b and thus at a distance in the longitudinal direction of the rail 13 from the one clamping element 15a and above the rail 13 and thus above the first running surface. The rolling element 14a and clamping element 15b arranged above the first running surface are each at a distance from the rolling element 14b and clamping element 15a arranged under the second tread, the amount of which is perpendicular to the connecting line of the elements 14a, 15b arranged above the first tread and perpendicular to the connecting line of the elements 14b, 15a arranged below the second tread is a little larger than the height of the rail 13 and thus as the distance between the two treads.

The principle of selectively allowing the carriage 7 to be shifted and the carriage 7 to be locked is as follows. When the carriage 7 is tilted relative to the rail 13 such that the two clamping elements 15a and 15b come into contact with the rail 13, the carriage 7 is locked on the rail 13. In Fig. Lb this is the case when the support element 10 rests with the bearing surface 12 on the crown of the chimney and the carriage 7 is tilted accordingly. In FIG. 1b, this first direction of tilting is a tilting movement which rotates the support surface 12 clockwise around the rolling element 14a as a fulcrum until first the clamping element 15a and then, upon further rotation about the clamping element 15a, the clamping element 15b contacts the rail.

Conversely, the bearing releases the carriage 7 for displacement on the rail 13 if the rolling elements 14a and 14b come into contact with the rail 13. This is the case, for example, when the support element 10 is lifted off the crown of the chimney and therefore first because of its weight distribution (the focus is in the projection perpendicular to the longitudinal direction of the rail 13 on the side of the rolling element 14a facing away from the upper clamping element 15b) is rotated counterclockwise around the clamping element 15b and then around the rolling element 14a as the fulcrum in FIG. 1b.

The carriage 6, which are selectively displaceable and lockable on the upper support part, have an analogous bearing. These bearings can also be designed so that the corresponding rolling elements and clamping elements do not attack on the top and bottom of a single rail 13, as shown in Fig. lb, but on a tread on the top and a tread on the underside of the carrier part 1, 2 or the corresponding Segment parts 4. For example, in the described embodiment of the segment parts 4 with a cross section of an isosceles triangle and a downward-pointing tip between the same legs for the two longitudinal struts 13 above, a roller element 14a and a clamping element 15b, which act on the top of the longitudinal struts , and for each of a lower longitudinal strut 13 a roller element 14b and a clamping element 15a, which engage on the underside of the longitudinal strut 13, are provided, which in turn are connected via a holder running on the outside of the segment parts. It is crucial that the direction of the sequence of the arrangement of the rolling element and clamping element above the first running surface is opposite to the direction of the sequence of the arrangement of rolling element and clamping element below the second running surface.

The choice of the position of the center of gravity of the slide and the carrying element in the projection perpendicular to the longitudinal direction of the rail (s) on the side of the upper rolling element 14a facing away from the upper clamping element 15b (case 1, as was described for the carrying element 10 from FIG. 1b) or on the side of the upper clamping element 15b facing away from the upper rolling element 14a (case 2) then determines whether the storage without external force automatically releases the slidability of the slide and only when a force exceeding the weight of the slide and carrying element acts on and opposes this force The center of gravity blocks the movability and locks the slide (case 1) or, conversely, automatically locks the slide and only releases it when the force is applied (case 2).

On the carriage 6 of the excavator 7, two height-adjustable supports 18 are fastened by means of supports 24. The tilting of the sled 6 for locking the sled 6 is one achieved by the fact that the high adjustable supports 18 placed on the crown of the wall 19 and the feet 20 of the supports 18 are slightly extended downwards. This extension of the feet 20, analogous to the placement of the bearing surface 12 on the crown of the wall, results in the bearing or the slide 6 being tilted. On the other hand, in this embodiment, a lock is additionally provided on the slide 6, which firmly grips at least one rail 13 and thus locks the slide 6, and the arm 8 of the associated excavator 7 is moved. This is achieved in that a hydraulic cylinder, which actuates the lock, is short-circuited with the hydraulic system of the excavator arm 8. The purpose of this locking device is to prevent a force exerted on the arm 8 of the excavator 7 acting on the wall 19 of the chimney from lifting the tilting of the slide and thus the locking device.

The carrier 24 and height-adjustable supports 18 can be retracted by moving the carriage 6 in the direction of the axis of the rotary joint 3. Such a retracted position is not shown in the figures for a carriage 6, but such a retracted position is shown in FIG. 3 for a carriage 7 or a support element 10.

In the embodiment shown in FIG. 1 a, two containers 16 are fastened on the upper side of the first carrier part 1, which serve as a machine room, in particular for providing a power supply, for example with a motor and generator, and a pneumatic or hydraulic supply, and as a lounge for the operating team. A height-adjustable control tower 17 is mounted on the containers 16. The height of the operating tower 17 can be adjusted such that an observer positioned in the top of the operating tower 17 can see the entire working area of the excavator 7 and the support points on the crown of the chimney. Furthermore, as shown in FIG. 1 a, headlights can be attached to the tower 17, so that the work area can also be illuminated at night. Likewise, on the excavators 7 and others Points of the device headlights are attached in an analogous manner.

As can be clearly seen in FIGS. 2 and 3, fastenings for cables 22 in the form of cable winches 21 are provided on the second carrier part 2. In the present embodiment, a rope winch 21 for each rope 22 is attached to each arm for three ropes 21. The ropes can be deflected upwards via deflection rollers 23.

The process of placing the device on the crown of the chimney to be broken off will now be described. The device is first mounted within the wall 19 of the chimney at the bottom of the chimney (see Fig. 2). On the crown of the wall 19 of the chimney, cross members 25, which are composed of segment parts 4, are attached via flanges 26. The segment parts 4, which have the described cross section of an isosceles triangle, are used in the cross members 25 with the tip between the same legs upwards. In the middle of the respective cross member 25, a fastening 27 for a corresponding rope 22 is provided. In this way, the ropes 22 are guided from the ropes 21 over the deflection rollers 23 to the fastenings 27 above the wall crown. Then the complete device, which has been mounted on the bottom of the chimney with an outer circumference that is smaller than the inside diameter of the chimney crown (Fig. 3) by winding the cables 22 by means of the winches 21 from the bottom of the chimney (Fig. 2) Chimney crown (Fig. 3) pulled up. Since the crossbeams 25 rest on the wall crown, it is not possible to pull the device up to a height at which the support elements 10 can be extended to rest on the wall crown. Therefore, as shown in Fig. 3, the high adjustable supports 18 are moved outwards by moving the slide 6 from the axis of the swivel joint 3 over the crown of the wall 19, then the entire device is supported on the wall crown via the high adjustable supports 18 and by extending the high adjustable Supports 18 raised so far down that the support elements 10 with their bearing surfaces 12 can be moved over the crown of the wall 19. Preferably, the support elements 10 are pushed with their bearing surfaces 12 so far over the crown of the wall 19 that they press horizontally against the inner wall of the wall 19 with a respective force 31 (not shown in the figures). A centering of the entire device and a reliable introduction of the transverse forces caused, for example, by wind into the wall 19 are thereby achieved. Then the height-adjustable supports 18 are retracted again, so that the entire device rests on the crown of the wall 19 over the contact surfaces 12 of the support elements 10.

The chimney is generally broken off with the device in a known manner. While the device rests on the support crown 10 on the wall crown, the excavator 7 is used to break off the wall crown in the areas between or next to the support elements 10 using tools 9a, 9b. The excavator 7 is supported on the height-adjustable supports 18 on the wall crown. In the embodiment described here, a height-adjustable support 18 is connected to the carriage 6 by the carriage 6 of the excavator 7 (see FIG. 4). By placing the height-adjustable supports 18 on the crown of the wall 19, the slide 6 is locked in the manner described above. After the wall crown in the area between the two height-adjustable supports 18 and / or possibly also in a certain area on the left and / or broken off to the right of the supports 18, after the feet 20 of the supports 18 have been retracted, the excavator is pivoted into a new working area by pivoting the first support part 1 relative to the second support part 2 resting on the wall crown via the support elements 10. During the pivoting, a locking of the carriage 6 on the struts 13 can be achieved, for example, that the arm 8 of the excavator in the direction of Swivel joint 3 pivoted and thereby the center of gravity of carriage 6 and excavator 7 is moved so far in the direction of the swivel joint that the carriage 6 locks.

As a result, the wall crown is broken off in a crenellated manner, as is shown in FIG. 5a for breaking off with a concrete breaking pliers 9a and in FIG. 5b for breaking off with a concrete hammer 9b. When the area of the chimney between the support elements 10 has broken off within the reach of the excavator 7, the device is raised above the supports 18 and the second support part 2 is pivoted relative to the first support part 1 and then with the support elements 10 on areas of the area which have already been broken off further Crown removed again. Then the procedures are repeated. When breaking off, a work platform is attached to the outside of the wall in a known manner. One of the purposes of this platform is to prevent parts of the chimney to be demolished from falling outwards.

The cross section of the arms of the support parts 1, 2 and the segment parts 4 can also be e.g. be rectangular or the like. The sledge system remains basically the same.

In a further embodiment, the container 16 serving as the machine room is omitted and the power and pneumatic or hydraulic supply etc. are integrated in the cross section of the arms of the upper support part. The cross section is then preferably rectangular in order to create enough space. The container 16 serving as a lounge and the control tower 17 are also provided on the top.

In a further embodiment, instead of the cable winches, 21 hooks or the like are provided as attachments for the cables. The necessary winches are then anchored to the bottom of the chimney by anchor bolts or fixed by weights. In a further embodiment, the feet 20 of the supports 18 are provided with clamping devices so that the feet 20 can be clamped to the crown of the wall 19. As a result, the torsional forces generated during work can be dissipated into the wall 19 and the supporting parts 1, 2 are essentially only subjected to bending as a result. Therefore, these support members can be built more easily in this embodiment.

Claims

claims

1. Device for breaking off a building having a circumferential wall, such as a chimney or a cooling tower, with a first multi-arm support part (1), a second multi-arm support part (2), a rotary bearing (3) which rotates the first and the second support part relative to one another connects to one another, and at least one slide (6, 7) which can be moved on at least one of the arms of the carrier parts, characterized in that the slide can be moved and locked selectively in the longitudinal direction of the arm, and in that the slide is supported by roller elements (14a, b) and clamping elements (15a, b), which is designed such that a tilting of the carriage (6, 7) relative to the arm in a first relative position, an engagement of the clamping elements (15a, b) with the arm for locking the carriage and a Tilt into a second relative position a contact of the rolling elements (14a, b) with the arm and releasing the clamping elements (15a, b) from the arm to the woman Entry of a displacement of the carriage (6, 7) causes.

2. Device for breaking off a building having a circumferential wall, such as a chimney or a cooling tower, with a first multi-arm support part (1), a second multi-arm support part (2), a rotary bearing (3) which rotates the first and the second support part relative to one another connects to one another, and at least one slide (6, 7) which can be displaced on at least one of the arms of the carrier parts, characterized in that the slide is a carrying element (10) for placing the

Device on the edge of the building or a working device (7) such as an excavator with a concrete crusher (9a), that the arms of the carrier parts (1, 2) at least partially consist of segment parts (4) which have connection points (5) at which the segment parts (4) can be connected to one another and can be attached or detached in this way, and that the slide ( 6, 7) is displaceable away from the outer end of the arm such that a segment part (4) can be attached or removed.

3. Device for breaking off a building having a circumferential wall, such as a chimney or a cooling tower, with a first multi-arm support part (1), a second multi-arm support part (2), a rotary bearing (3) which rotates the first and the second support part relative to one another with each other in such a way that the first carrier part (1), viewed in the direction of the axis of rotation, is arranged above the second carrier part (2), connects, and on the arms of the carrier parts each slidable slide (6, 7), characterized in that the device on The second carrier part (2) has a fastening (21) for at least one rope (22) that on the carriage (6) of at least three arms of the first carrier part (1) has at least one height-adjustable support (18) for supporting the device the edge of the structure is attached to the carriage (7) of at least three arms of the second support part (2) each have a support element (10) with a Support surface (12) is provided for placing the device on the edge of the building, and that the stroke of the height adjustability of the height-adjustable supports (18) is at least greater than the distance in the height direction between the highest position of the respective support (18) and the support surface (12 ) of the support elements (10).

4. Apparatus according to claim 2 or 3, characterized in that the slide is selectively displaceable and lockable in the longitudinal direction of the arm, and that the slide has a bearing with rolling elements (14a, b) and clamping elements (15a, b) which is designed such that the slide (6, 7) tilts relative to the arm in a first relative position, engagement of the clamping elements (15a, b) with the arm for locking the slide and tilting into a second relative position, contact of the rolling elements (14a, b) with the arm and loosening of the clamping elements (15a, b) caused by the arm to release a displacement of the carriage (6, 7).

5. Apparatus according to claim 1 or 3, characterized in that the carriage carries a support element (10) for placing the device on the edge of the building or a working device (7) such as an excavator with a concrete crusher (9a) that the arms the carrier parts (1, 2) consist at least partially of segment parts (4) which have connection points (5) at which the segment parts (4) can be connected to one another and can be attached or detached in such a way, and that the slide (6, 7 ) is displaceable away from the outer end of the arm in such a way that a segment part (4) can be attached or removed.

6. The device according to claim 1 or 2, characterized in that the device on the second carrier part (2) has a fastening (21) for at least one rope (22) that on the carriage (6) of at least three arms of the first carrier part (1) at least one height-adjustable support (18) for supporting the device on the edge of the structure is attached to the carriage (7) of at least three arms of the second support part (2) each with a support element (10) with a support surface (12) is provided for placing the device on the edge of the structure, and that the stroke of the height adjustability of the height-adjustable supports (18) is at least greater than the distance in the vertical direction between the highest position of the respective support (18) and the contact surface (12) of the support elements (10).

7. The device according to claim 1 or 4 to 6, characterized in that the arm has at least an upper and a lower tread, each extending in the longitudinal direction of the arm in a first direction from the pivot joint (3) away substantially radially outwards that the bearing has at least two rolling elements (14a, b) and two clamping elements (15a, b), that a rolling element (14a) and a clamping element (15b) with a first distance in a second direction from one another and above the upper running surface and one another clamping element (15a) and another rolling element (14b) are arranged at a second distance in a third direction and below the lower running surface, that the upper and lower running surfaces are parallel and have a third distance that the rolling element (14a) and the clamping element (15b) above the upper running surface on the one hand to the other rolling element (14b) and to the other clamping element (15a) below the lower running surface he, on the other hand, each have at least one distance whose amount in a fourth direction perpendicular to the second direction and whose amount in a fifth direction perpendicular to the third direction is greater than the third distance, and that the sequence in which the rolling element (14a) and the clamping element (15b) is arranged above the upper tread in the second direction, is opposite to the sequence in which the other rolling element (14b) and the other clamping element (15a) are arranged under the lower tread in the projection onto the second direction are.

8. The device according to claim 7, characterized in that the second and third directions are parallel.

9. Device according to one of claims 2 or 4 to 8, characterized in that the segment parts (4) consist of interconnected struts (13), and that the struts (13) on the top and / or bottom of the segment parts are formed in such a way are that they have treads for carrying and guiding the carriage (6, 7).

10. Device according to one of claims 3 to 9, characterized in that the height adjustment of the supports (18) is carried out pneumatically or hydraulically.

11. Device according to one of claims 1 to 10, characterized in that the first and the second carrier part (1, 2) are each three-armed, that the slides (6, 7) are each arranged on the top of the arms that the two support parts (1, 2) are connected in the center by the swivel joint (3), so that one or more containers (16), which serve for machine and spare parts storage or as a lounge, can be attached to the top of the first support part (1), and that a tower (17) is provided, the height of which is chosen or can be selected so that the edge of the structure is visible from the tower in all directions.