WO2000051786A1

WO2000051786A1 - Device for treating, for example, sand-blasting or varnishing

Info

Publication number: WO2000051786A1
Application number: PCT/DE2000/000582
Authority: WO
Inventors: Alfons Moog
Original assignee: Alfons Moog
Priority date: 1999-03-04
Filing date: 2000-02-29
Publication date: 2000-09-08
Also published as: AU3801700A; DE19909383A1

Abstract

The invention relates to a device for treating, for example, sand-blasting or varnishing the walls of bodies such as hulls, tanks, large containers, buildings, bridges or the like by way of a travelling treatment station (15). At least one traction-absorbing, flexible element (6, 7) for guiding the treatment station (15) during travel is provided. The device further contains clamping means with which the at least one flexible, traction-absorbing element (6, 7) can be clamped along a wall (17) to be treated in such a manner that the treatment station is pulled towards the wall (17) to be treated.

Description

TREATMENT DEVICE, e.g. SAND BLASTING OR PAINTING

The invention relates to a device for treatment, for. B. sandblasting or painting the walls of bodies such as ship hulls, tanks, bulk containers, buildings, bridges or the like with at least one movable treatment station.

An apparatus of the type described in the introduction is disclosed in US Patent 5,685,767. It is a sandblasting system for sandblasting vertical and horizontal surfaces, such as the side walls and the upper side of cylindrical oil tanks. The system essentially consists of two components, a carriage that is positioned on top of the body to be sandblasted and a sandblasting device with an oscillating sandblasting nozzle that is drained over two cables to clean the vertical surfaces of the carriage. The two ropes are attached to the carriage on a boom which is adjustable in its inclination so that the distance between the ropes and thus the sandblasting device to the vertical wall can be adjusted within a certain range. Over the barrel agen, the sandblasting device can be moved in the horizontal direction so as to strip by strip on z. B. sandblasting a cylindrical oil tank.

This sandblasting system is suitable for cleaning of many vertical surfaces, but it is unsuitable for areas on bodies with negatively inclined, i.e. overhanging wall sections, such as those found on ship hulls, since in these areas the sandblasting device can no longer be positioned close enough to the surface to be cleaned.

Object and advantages of the invention

The invention has for its object to provide a device with which in particular also negatively inclined wall areas on bodies, such as occur on ship hulls, z. B. can be sandblasted.

This object is achieved on the basis of the features of a device of the type described in the introduction in that at least one tension-absorbing, flexible element for guiding the at least one treatment station during the method is provided and that clamping means are provided with which the at least one flexible, tension-absorbing element is along of a wall to be treated can be clamped in such a way that the treatment station guided on the at least one flexible, absorbing element is pulled against the wall to be treated. In this way it becomes possible that the treatment station can be moved on even negatively inclined wall areas of body surfaces without losing contact with the surface. In order to achieve this, it is particularly preferred if the tensioning means are designed to tension the at least one flexible tension-absorbing element in such a way that it lies at least partially on the surface of the wall.

For a simple structural design, it is particularly advantageous if the at least one tension-absorbing element in the open state in a vertical plane in the Runs essentially perpendicular to the wall to be treated.

In a further preferred embodiment of the invention, the clamping means comprise a construction unit on which the at least one flexible, tension-absorbing element can be clamped along a wall to be treated. By this measure, the at least one absorbing, flexible element regardless of z. B. clamping options on the wall to be treated, the size and direction of forces in the flexible element can be specified via the construction unit.

In a particularly advantageous embodiment of the invention, the constructional unit, when the at least one flexible, tension-absorbing element is clamped, has at least one support member which extends in a predominantly horizontal direction and a predominantly vertical direction, the ends of the at least one in the front region of the support members flexible element are attached. This represents a comparatively simple embodiment of a constructional unit according to the invention. With respect to the wall, the support members span a plane that is oriented essentially perpendicular to the wall. Thus, a treatment station guided by the at least one flexible element can reach all surface areas of walls, the surface line of which, viewed perpendicular to this plane, runs between the two support members and a completely tensioned flexible element.

In order to allow easy adaptation to different walls, it is also proposed that at least one support member can be extended, e.g. B. is telescopic and / or foldable. In addition, it is preferred if at least one fastening point of the flexible, tension-absorbing element tensioning elements, such as. B. includes a winch. The length and the tensile force in the at least one flexible, tension-absorbing element can thus be easily adjusted.

At least two parallel, flexible, tension-absorbing elements are preferably arranged on the support members. It is advantageous if the treatment station is guided on the parallel flexible, tension-absorbing elements. In this way, the area between the flexible, tension-absorbing elements can be used by the treatment station for a surface treatment of the wall without further disruptive guide elements. For the surface treatment of a strip-shaped area along the parallel elements, the treatment station is moved either from top to bottom or from bottom to top on the flexible, tension-absorbing elements.

In a further advantageous embodiment of the invention, one or more support members lie in one plane in the horizontal or vertical direction. This enables parallel guidance of, for example, two flexible elements which are attached to different support members.

It is also particularly advantageous if the surface between supporting members of one direction can be completely or partially covered. With this measure, the area of the surface treatment can be shielded from the outside in order to cover the wall section being processed, e.g. B. to protect against weather influences (rain, fog, etc.). When renovating a ship's hull, the wall surface can be z. B. sandblasted and in a second step after the sandblasting step Primer are applied without there being an immediate risk of rusting on the bright blasted wall surface due to weather-related influences before the primer is applied. The shielding of a wall area to be treated also allows the restoration work to be interrupted for a certain period of time without the quality of surfaces that have already been blasted being significantly impaired.

The cladding of the support members, which extend predominantly in the vertical direction, is preferably configured in a region parallel to the wall to be treated as a telescopic wall. The vertical areas perpendicular to it can advantageously be covered by tarpaulins in order to achieve an easy adaptation to curved wall shapes. The area between the support members, which extend predominantly in the horizontal direction, can also advantageously be covered with foils or the like in order to encapsulate the entire area in which the treatment station is guided along the wall to the outside.

For good adaptability of the construction unit according to the invention, in particular to the walls of ship hulls, it is further proposed that the one or more support members, which run predominantly in the vertical direction, are inclined in the front region, that is to say in relation to a wall to be cleaned are inclined towards them.

In order to ensure good shielding of the wall surface to be treated from the environment, it is also proposed that the inclined section of the support members is covered like a roof and preferably has the front edge of the inclined section of the support members sealant. The sealant should be designed so that the Positioning of the device according to the invention in front of a wall, these rest on the wall in order to ensure the sealing effect.

In a preferred embodiment, the treatment station comprises a cabin open on one side. The cabin is of course led to the wall with a surface treatment with the open side. The otherwise closed cabin not only prevents z. B. larger amounts of abrasive can reach the outside during a sandblasting process. Rather, there is the possibility that the blasting media can be collected in the cabin and reused.

In order to ensure a preferred guidance of the treatment station, it is further proposed that deflection members are provided at the treatment station, which loop through one or more flexible elements receiving the tension in such a way that the treatment station is pressed against the wall to be treated in the tensioned state of the elements.

Finally, it is advantageous that the construction unit comprises a mobile base unit to which the support members are attached. As a mobile base unit z. B. a semi-trailer can be used, which is self-propelled and / or steerable.

drawings

An embodiment of the invention is shown in the drawings and explained in more detail with the specification of further advantages and details. Show it

1 shows a first device according to the invention in front of a ship's hull arranged in two working positions in a side view perpendicular to the hull wall,

Fig. 2 shows the device of Fig. 1 in one

Side view parallel to the ship's wall,

3 shows a schematic illustration of the guidance of a chain as a flexible, tension-absorbing element at a treatment station in a side view,

Fig. 4 shows a second device for

Surface treatment, which extends from one side of a hull to the other side of the hull, in a view in the longitudinal direction of the hull,

5 shows a third embodiment variant of a device according to the invention for surface treatment with support towers in a view corresponding to FIGS. 4 and

Fig. 6 shows a fourth surface treatment device according to the invention, which is attached directly to a ship's hull.

Description of the embodiment

The device 1 shown in FIGS. 1 and 2 is shown in the working state on a section of a ship's hull 2. The device 1 according to the invention comprises a semi-trailer 3, which z. B. can move automatically and / or steer automatically. Instead of a semi-trailer, however, other travel units can also be used. Arranged on the semi-trailer 3 is a wall 4 which can be telescoped in the vertical direction and which is inclined roof-shaped in the upper region in the direction of the ship's hull 2. For hanging the telescopic wall 4 z. B. parallel to each other spaced telescopic support elements (not shown) are present, which extend into the inclined area 5 of the telescopic wall 4. At the front end of these support elements, not shown, or at suitably stabilized points in the inclined region 5, two tension-absorbing flexible elements 6, 7 in the form of tension cables are fastened at a distance d, which are parallel to one another in a vertical plane substantially perpendicular to the hull 2 to the front Range of two further support elements 8, 9 extend horizontally from the semi-trailer 3 under the hull 2. The two support elements 8, 9 each consist of a first telescopic boom 10, at the front end of which an extension piece 12 is attached, the support elements 8, 9 having a vertical intermediate support 13 for receiving their own weight at the junction of the boom 10 and extension piece 12 , which is supported on the installation surface.

At the front end of the extension pieces 12 a winch 14 is arranged, with which the length of the tensioning ropes 6, 7 or their tension is adjustable.

A cabin 15 open to the wall of the ship's hull 2 can be moved between the tensioning ropes 6, 7 shown in the tensioned state in FIGS. 1 and 2. 2 is an upper position of the cabin 15 on the ship's hull is shown in solid lines and two further positions of the cabin 15 in the lower region of the ship's hull 2 are shown in broken lines.

An upper position of the cabin 15 on the hull 2 is also shown in FIG. 1, from which the width of the cabin 15 can also be seen, which essentially corresponds to the distance d between the tensioned tension cables 6, 7. The cabin 15 can e.g. B. can be moved with other pull cables, not shown. The cabin 15 preferably has deflection rollers on both outer sides, each of which loops a tensioning cable 6, 7 so that the cabin 15 is pressed against the wall of the ship's hull 2.

For example, the cabin 15 is equipped with sandblasting units, which can be connected via hoses or cables (not shown) to a blasting agent silo located on the semi-trailer and a unit for extracting dust and blasting agent for reuse and an energy supply.

However, the cabin 15 can also be equipped with appropriate spray nozzles for priming or painting. For example, the cabin 15 is designed in such a way that it is easy to change the area of application from a sandblasting device to a device for priming or painting or vice versa.

In order to protect a surface-treated area of the wall on the ship's hull 2 from external influences, in particular weather influences, the inclined area 5 on the telescopic wall 4 is equipped on its front edge with a sealing lip which, for. B. prevents that on the wall 16 of the hull 2 running rainwater penetrates into the surface-treated area 17 of the wall. Rather, the rainwater is drained through the inclined area 5 and the telescopic wall 4 to the footprint 18 through the sealing lip.

In addition, the area between the support elements 8, 9 with z. B. a tarpaulin. The end faces between the ship wall 17 and telescopic wall 4 or support elements 8, 9 with z. B. a tarpaulin. In this way, the wall section 17 to be treated can be completely shielded from the outside. As a result, rain, fog or the like, which occurs in the mostly open dry docks for ships, can be kept away from a treated or treated surface. For example, by keeping sandblasted wall sections dry, the build-up of rust can be avoided. On the other hand, the encapsulation prevents z. B. blasting abrasives and removed particles contaminate the environment in an uncontrolled manner.

A treatment sequence for renovating the wall of a ship's hull 2 can be carried out, for example, as follows:

1. In a first pass, the cabin 15 is used for sandblasting. This means that old paint is removed from the wall using suitable abrasives. The cabin 15 z. B. from top to bottom along the tension cables 6, 7 moves.

2. In a second pass, the sandblasted, cleaned surface is primed with an appropriately converted cabin 15.

3. Finally, in a third process step, the primer is optionally refitted with Cabin 15 provided the primer with a layer of lacquer.

4. After the completion of these three process steps, the entire device can automatically continue to travel by a treatment width d along the ship's hull by means of the semi-trailer in order to also carry out these three renovation steps there. A second position of the device 1 is shown in dashed lines in FIG. 1.

After complete renovation or, if necessary, to switch to the other side of the ship, the telescopic wall 4 is retracted and the cabin 15 is placed on the semitrailer. Furthermore, the support elements 8, 9 are retracted, the extension piece 12 z. B. folded up and the tensioning ropes 6, 7, each with the winch 14.

In the retracted or collapsed state, the semi-trailer can then be hung in a simple manner on a tractor in order to bring the device 1 to another place of use.

3 shows the guide arrangement of a flexible, tension-absorbing element 20 (here in the form of a link chain) on a cabin 15. Chain wheels 21, 22 are used to guide the link chain 20. In order to ensure a secure chain engagement, the chain 20 is placed between the chain wheels 21 deflected by the respective third sprocket 22 in such a way that slipping of the chain in a slightly tensioned state becomes impossible. In addition, the chain 20 is guided by means of the rollers 21 at a distance a from the front edge of the cabin 15, which borders the side of the cabin open to the wall to be treated. Due to the distance a, the cabin 15 is pressed against the wall to be treated while the chain is otherwise essentially in contact with the wall to be treated. The greater the distance a, the greater the pressure force. This creates a gap that is too large between the front edge of the cabin 15 and the wall surface to be treated, which could lead, for example, to contamination of the surroundings by blasting agents during sandblasting.

In Fig. 4, two devices 1 according to. 1 and 2 connected to a new overall device 30, in which, for. B. at least one tensioning rope or a chain (here two tensioning ropes 31, 32) are guided from one hull side wall 33 to the opposite hull side wall 34 via the keel area 35 of the hull 2. In this way, it becomes possible to move one or more treatment cabins 15 (in FIG. 4, two treatment cabins 15 are extended and further positions of the treatment cabins 15 are shown in dashed lines) along the outer surface of the ship's hull from one side to the other. In addition, the flexible, tension-absorbing elements 31, 32 can be clamped more easily along the surface of the ship's wall. In addition, the boom 10 or the extension piece 12 can be omitted. In this embodiment as well, the entire device 30 in FIG. 4 can be moved perpendicular to the image plane in order to be able to treat strip by strip along the ship's wall.

In the embodiment according to 5, the devices 1 are replaced by support towers 41, 42 in order to clamp the one or more flexible, tension-absorbing elements 31, 32 for guiding a cabin 15 along a wall surface to be treated (here the hull surface). Such support towers 41, 42 can after the completion of the surface treatment of a strip on the hull z. B. can be moved to the next treatment position using a lifting crane.

In order to ensure that a cabin in the keel area below the ship does not lift off the surface of the hull due to its own weight, flexible, tensile elements, the cabin 15 in all embodiments have a support device (not shown) which supports the cabin 15 directly below the ship's hull against the floor surface 18. This support device can comprise a support wheel, the distance to the cabin of which can be variably adjusted. Alternatively or in addition to such a support device, there are also magnet units, such as, for. B. magnetic roles into consideration, which help the cabin 15 in addition to flexible, absorbing elements, not to lift off the surface of the fuselage.

6 shows a device 50 for surface treatment which is attached directly to the hull 2. This means that at least one flexible element (here two flexible elements 31, 32) is fastened directly to the guidance of one or more cabins 15 on the ship's hull. For example, rails (not shown) are provided for moving the device 50 along the longitudinal axis of the ship's hull in its upper region.

Reference symbol list:

1 device for surface treatment

2 hull

3 semi-trailers

4 telescopic wall

5 inclined area

6 tension rope

7 tension rope

8 support element

9 support element

10 outriggers

11 front end

12 extension piece

13 intermediate support

14 winds

15 cabin

16 wall

17 wall to be treated

18 floor space

20 chain

21 sprocket

22 sprocket

30 Surface treatment device

31 flexible, tension-absorbing element

32 flexible, tension-absorbing element

33 fuselage side wall

34 fuselage side wall

35 keel area of the hull

40 Surface treatment device

41 support tower

42 support tower

50 Surface treatment device

Claims

Expectations :

1. Treatment device, e.g. B. sandblasting or painting the walls of bodies such as ship hulls, tanks, large containers, buildings, bridges or the like, with at least one movable treatment station, characterized in that at least one absorbing, flexible element (6, 7) for guiding the at least one treatment station (15) is provided in the method and that clamping means are available with which the at least one flexible, absorbing element (6, 7) can be clamped along a wall (17) to be treated in such a way that the treatment station guided on the at least one flexible element ( 15) is pulled against the wall to be treated (17).

2. Device according to claim 1, characterized in that the tensioning means are designed to tension the at least one flexible, tensile element (6, 7) such that it at least partially abuts the surface of the wall.

3. Device according to one of claims 1 or 2, characterized in that the at least one flexible, tensile element (6, 7) can be clamped in a vertical plane substantially perpendicular to the wall to be treated.

4. Device according to one of the preceding claims, characterized in that the clamping means comprise a construction unit on which the at least one flexible, tension-absorbing element (6, 7) can be clamped along a wall to be treated.

5. The device according to claim 4, characterized in that the structural unit with at least one clamped flexible, tension-receiving element (6, 7) each has at least one support member (4, 8) which extends in a predominantly horizontal direction and a predominantly vertical direction, the ends of the at least one flexible tension-receiving element being fastened in the front region of the support members are.

6. The device according to claim 5, characterized in that at least one support member (8, 9) extendable, for. B. is telescopic and / or foldable.

7. Device according to one of the preceding claims, characterized in that at least one fastening point of the at least one flexible, tension-absorbing element clamping members, such as. B. comprises a winch (14).

8. Device according to one of claims 5 to 7, characterized in that at least two parallel, flexible, tension-absorbing elements (6, 7) are arranged on the support members (8, 9).

9. The device according to / claim 8, characterized in that the treatment station (15) is guided on the parallel flexible elements.

10. Device according to one of claims 5 to 9, characterized in that one or more support members lie in a horizontal or vertical direction in one plane.

11. Device according to one of claims 5 to 10, characterized in that the surface between support members (8, 9) one direction can be completely or partially covered.

12. The apparatus according to claim 11, characterized in that the lining in the vertical direction telescopic wall and / or z. B. folding or accordion wall is designed.

13. Device according to one of claims 5 to 12, characterized in that the one or more support members, which extend predominantly in the vertical direction, are inclined in the front region.

14. The apparatus according to claim 13, characterized in that the inclined portion of the support members is clad like a roof.

15. The apparatus according to claim 14, characterized in that the front edge of the inclined portion (5) of the support members has sealing means.

16. Device according to one of the preceding claims, characterized in that the treatment station comprises a cabin (15) which is open on one side.

17. Device according to one of the preceding claims, characterized in that deflection members are provided at the treatment station (15) which loop through one or more flexible elements (6, 7) such that the treatment station in the clamped state of the flexible, absorbing elements against wall (17) to be treated is pressed.

18. Device according to one of the preceding claims, characterized in that the construction unit comprises a mobile base unit to which the support members are attached.