Method and processing device for processing layers of stone for machine laying

Abstract

Method for processing stone layers (1, 11, 21; 41, 51, 61) for machine laying, wherein the respective stone layer (1, 11, 21; 41, 51, 61) is formed from a plurality of concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) and wherein the concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) are arranged on a transport base (T) in a tiling provided for the respective stone layer (1, 11, 21; 41, 51, 61) and are placed next to each other for this purpose, characterized in that - that a first part of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) of the respective block layer (1, 11, 21; 41, 51, 61) is selected for a different or additional processing, - that a second part of the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) of the respective block layer (1, 11, 21; 41, 51, 61) is exempt from the deviating or additional processing and - that the top surfaces (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) of the first part are fully processed during the deviating or additional processing.

Description

[0001] The invention relates to a method for processing stone layers for mechanical laying and a processing device for processing stone layers for mechanical laying according to the preamble of claims 1, 4 and 5, respectively.

[0002] From DE 10 2009 007 972 A1 a processing machine for the simultaneous processing of several stones arranged on a support in the area of ​​their upper side is known.

[0003] From BE 1 017 039 A4, a method for obtaining a sorted arrangement of processed stones for laying a decorative pavement is known, comprising the following steps: arranging the stones in a number of layers; stacking the layers into an arrangement; and performing processing on the arrangement. At least one of the layers comprises at least one stone whose at least one property differs from stones in the same or another layer.

[0004] From DE 10 2007 038 388 A1, a laying package of paving stones with a number of paving stones arranged in several parallel rows is known, wherein the individual rows each have paving stones of the same width and all rows have the same total length, so that a rectangular, machine-detectable laying package is created, wherein the laying package has a first group of adjacent rows of paving stones and a second group of adjacent rows of paving stones, wherein the widths of the paving stones of the first group are smaller than those of the paving stones of the second group.

[0005] From WO 2007 / 102731 A1, a paving stone laying machine is known, which comprises: a mobile storage for paving stones to be laid; a mechanical arm for removing paving stones from the mobile storage; a visual unit for observing and analyzing a laying area in which a paving stone can be laid by the mechanical arm, and for providing visual information thereon; a control unit for controlling the mechanical arm depending on the visual information from the visual unit; wherein the mechanical arm comprises a gripper for gripping a plurality of paving stones, wherein the gripper is designed for individually laying each of the gripped paving stones.

[0006] From US 7 518 079 B2 a method is known for automatically sorting paving stones of different sizes from loose material into, for example, patterned, palletisable layers in a standard output format, wherein the stones, after being arranged in a row, are detected by an image processing-based system according to size and guided into arrangement tracks, from where they can be selectively output in the preferred laying patterns in the said output formats.

[0007] The object of the invention is to propose a method for processing stone layers for mechanical laying or a processing device for processing stone layers for mechanical laying, which makes it possible to produce an individual and random appearance of the resulting paving surface in relation to the surfaces of the individual concrete stones with an effectiveness typical when creating paving surfaces from stone layers.

[0008] This problem is solved by the characterizing features of the respective claims, based on the features of the preamble of claims 1, 4, and 5, respectively. Advantageous and expedient developments are specified in the respective subclaims.

[0009] In a transport unit comprising several stone layers for mechanical laying and a transport pallet, at least one concrete block is arranged in each stone layer. This concrete block has a top surface that differs from the top surfaces of the other concrete blocks in the respective stone layer. From a transport unit with stone layers constructed in this way, a custom, random-looking surface appearance of a paving area formed from the stone layers can be created using the conventional laying technique of simply placing the individual stone layers next to one another. If necessary, it is provided to swap adjacent concrete blocks between adjacent stone layers in order to achieve interlocking of adjacent stone layers.The core of the invention is thus a transport unit whose individual stone layers each have concrete blocks with an upper side having a first surface and an upper side having a second surface different from the first upper side, so that concrete blocks with upper sides having different surface appearances and / or surface structures can be laid in a mixed manner in an efficient manner.

[0010] It is planned to mechanically remove each stone layer from the transport unit using means for handling a ready-to-lay stone layer and place it on a prepared subsurface as a finished stone layer. This allows for particularly efficient installation.

[0011] Furthermore, it is intended that all stone layers of the transport unit be designed to be congruent with regard to the positioning of concrete blocks with identically processed first top surfaces and concrete blocks with different top surfaces, or that at least two stone layers, and in particular at least 30% of the stone layers of the transport unit, be designed to be at least partially and in particular completely different from one another with regard to the positioning of concrete blocks with identically processed first top surfaces and concrete blocks with different top surfaces. A transport unit with identically designed stone layers allows the installer to easily comply with strict installation specifications and is suitable for the creation of paving areas with a strict geometric pattern.A transport unit with at least partially different stone layers in terms of the positioning of the finished-face concrete blocks allows the installer to create paving surfaces with random patterns without requiring additional care or placing the stone layers in different orientations on the gravel bed. A variation of the pattern is thus produced in the concrete plant and stored in the transport unit.

[0012] It is also provided to divide the processed upper surfaces of at least one stone layer, and in particular all stone layers of the transport unit, into two groups, wherein the processing of the first group results in a first appearance, and wherein the processing of the second group results in a second appearance, which differs from the first appearance to the observer. In this case, the different appearances are provided for, in particular, by varying the processing duration and / or processing intensity or by different processing methods.A transport unit with one or more such stone layers allows the paving surface produced from such transport units to be given a highly individual appearance without any subsequent intervention, which creates the impression for the observer of a paving surface laid by hand from individual stones, although the paving surface can be produced cost-effectively by simply placing stone layers together.

[0013] It is also planned to design the concrete blocks of a stone layer with partially different length dimensions and / or partially different width dimensions.

[0014] This reinforces the desired impression of a paving surface created by laying individual concrete blocks in a paving area created from the transport unit, even though the stone layers are laid as units with mechanical assistance.

[0015] The method according to the invention for processing stone layers for mechanical laying provides for selecting a first portion of the concrete blocks of the respective stone layer for a different or additional processing, excluding a second portion of the concrete blocks of the respective stone layer from the different or additional processing, and processing the upper surfaces of the concrete blocks of the first portion over their entire surface during the different or additional processing. This creates a stone layer with concrete blocks having a first surface and a second surface different from the first.

[0016] Furthermore, it can be provided to perform full-surface, different, or additional processing of the upper surfaces of the concrete blocks of the respective block layer using a protective device that covers the concrete blocks not to be processed during processing, thus limiting processing to the surfaces of individual concrete blocks. Such a protective device, which is particularly formed as a one-piece mask or, in particular, from several cover plates, can be manufactured cost-effectively and is suitable for the high loads encountered during concrete block production and processing.

[0017] Alternatively, it may be provided to control a processing device for processing the concrete blocks of the block layer in such a way that the processing device processes exclusively the first portion of the concrete blocks of the block layer selected for processing. Such targeted processing eliminates the need for a protective device and its handling, and this also makes it possible, in particular, to change the position and size of the concrete blocks to be processed by the processing device from block layer to block layer without interruption, for example, without interrupting a continuous operation in which the block layers are being processed.

[0018] The processing device according to the invention for processing stone layers for mechanical laying provides for the processing device to be designed in such a way that individual concrete blocks of the respective stone layer can be selected for a different or additional, full-surface processing of their upper surface, and individual concrete blocks of the respective stone layer can be excluded from a different or additional processing of their upper surface. This creates a stone layer with concrete blocks having a first surface and a second surface different from the first.

[0019] The process or equipment used may involve sandblasting, flame blasting, etching, and / or diamond brushing the concrete blocks to be treated. Such processes allow surface modifications to be made quickly and cost-effectively.

[0020] The processing device according to the invention also provides for selecting the concrete blocks to be processed either by actively or passively protecting the concrete blocks to be excluded from the different or additional processing, or by selectively processing only the top surfaces of the concrete blocks to be processed differently or additionally. The first variant can be implemented using simple tools, while the second variant enables individual processing of each block layer through appropriate control of the processing device.

[0021] According to a first variant, the processing device according to the invention provides active protection by at least one protective device covering the upper side of the concrete blocks to be excluded from a different or additional processing. Such protection is technically simple to implement, for example, using a one-piece mask or several cover plates.

[0022] According to a second variant, the processing device according to the invention provides passive protection by lowering the concrete blocks not to be processed relative to the top surfaces of the concrete blocks to be processed or by raising the concrete blocks to be processed relative to the top surfaces of the concrete blocks not to be processed, wherein the affected concrete blocks of the respective block layer are preferably lowered or raised simultaneously, one after the other, or in groups. This allows the concrete blocks not intended for processing their top surfaces to be easily kept out of a processing plane, particularly during mechanical processing.

[0023] It can also be provided to equip the respective stone layer with at least 6 concrete blocks and a maximum of 18 concrete blocks, wherein the respective stone layer has a length of at least 80 cm and a width of at least 65 cm and in particular has a length of approximately 120 cm and in particular a width of approximately 83 cm.

[0024] Finally, the transport unit manufacturing device can be equipped with a robot, a first feed device, a second feed device, and a depositing device, wherein the first feed device provides first concrete blocks and the second feed device provides second concrete blocks, wherein the top surfaces of the first concrete blocks are modified by different or additional processing compared to the top surfaces of the second concrete blocks, and wherein the robot forms a layer of blocks mixed from first concrete blocks and second concrete blocks on the depositing device according to a programmed specification. This allows a random appearance of a block layer to be systematically planned into production.

[0025] In the sense of the invention, parqueting is understood to mean the arrangement of individual concrete blocks to form a stone layer that is preferably rectangular in plan view, wherein the stone layer forms a laying unit that is gripped on the construction site with a gripper and placed as a structural unit in a paving area to be created.

[0026] For the purposes of the invention, a positioning or position of a concrete block in a block layer or of a top side of a concrete block in a block layer, viewed from above onto the block layer, is understood to mean an xy position of a center point of the concrete block or of the top side, which it has in a reference system aligned with the respective block layer. Deviating positions exist when the xy positions of two concrete blocks or top sides to be compared differ from each other in the x-value and / or the y-value, in particular by at least 5 cm.

[0027] Further details of the invention are described in the drawing using schematically illustrated embodiments.

[0028] This shows: Fig. 1a - 1c: a first, second and third layer of bricks in plan view; Fig. 1d: a perspective view of a transport unit showing the Fig. 1a to 1c shown stone layers after processing; Fig. 2a - 2c: a fourth, fifth and sixth layer of stones in plan view; Fig. 2d: a perspective view of a transport unit showing the Fig. 2a to 2c shown stone layers after processing; Fig. 3a - 3f: a schematic representation of a first processing variant of the Fig. 1a shown first layer of stones; Fig. 4a - 4f: a schematic representation of a second processing variant of the Fig. 1a shown first layer of stones and Fig. 5 - 7 three paved areas made of stone layers.

[0029] In the Fig. 1a shows a top view of a first layer of blocks 1. The first layer of blocks 1 comprises nine concrete blocks 2 to 10, with the concrete blocks 2, 7, and 9 marked with a St. Andrew's cross being intended for processing their upper surfaces 2a, 7a, and 9a.

[0030] In the Fig. Figure 1b shows a top view of a second layer of blocks 11. The second layer of blocks 11 comprises nine concrete blocks 12 to 20, with the concrete blocks 11, 17, and 19 marked with a St. Andrew's cross being intended for machining their upper surfaces 11a, 17a, and 19a.

[0031] In the Fig. 1c shows a third layer of blocks 21 in plan view. The third layer of blocks 21 comprises nine concrete blocks 12 to 30, with the concrete blocks 21, 27 and 29 marked with a St. Andrew's cross being intended for machining their upper surfaces 21a, 27a and 29a. Fig. In the stone layer 21 shown in Figure 1c, the upper sides 23a to 26a, 28a and 30a of the concrete blocks 23 to 26, 28 and 30 are not intended for processing.

[0032] In the Fig. Finally, in Figure 1d, a transport unit 31 is shown in perspective. The transport unit 31 comprises a transport pallet 32 ​​and the Fig. 1a to 1c, wherein the stone layers 1, 11 and 21 are placed one above the other on the transport pallet 32. In the Fig. 1d, the upper surfaces of the stone layers 1, 11, and 21 have already been processed. Accordingly, the upper surfaces 22a, 27a, and 29a of the concrete blocks 22, 27, and 29 of the third stone layer 21 are shown with an appearance or structure created by etching. Characteristic of the Fig. The transport unit 31 shown in Figure 1d is that the concrete blocks of the individual stone layers 1, 11, and 21 that have been processed lie on top of each other, or that the concrete blocks located in the same positions in all stone layers 1, 11, and 21 have been processed. Stone layer 21 has a length L21 and a width B21. All concrete blocks in stone layer 21 have a uniform height H21. The other two stone layers 1 and 11 also have corresponding dimensions.

[0033] In contrast to the Fig. 1a to 1c show the Fig. 2a to 2c a fourth, fifth and sixth stone layer 41, 51 and 61 with concrete blocks 42 to 50 or 52 to 60 or 62 to 70, whereby in a comparative examination of the stone layers 41, 51 and 61, top sides 42a, 47a, 49a or 55a, 57a, 59a or 62a, 64a, 66a of differently positioned concrete blocks 42, 47, 49 or 55, 57, 59 or 62, 64, 66 are intended for processing and are marked with a St. Andrew's cross.

[0034] Analogous to the representation of the Fig. 1d is in the Fig. 2d shows a perspective view of another transport unit 71, which comprises a transport pallet 72 and the three Fig. 2a to 2c shown stone layers 41, 51 and 61. In the Fig. The upper surfaces of the stone layers 41, 51, and 61 shown in Figure 2d have already been processed. Accordingly, the upper surfaces 62a, 64a, and 66a of the concrete blocks 62, 64, and 66 of the upper sixth stone layer 61 are shown with an appearance or structure created by flames. Characteristic of the Fig. The advantage of the transport unit 71 shown in Figure 2d is that the concrete blocks of the individual stone layers 41, 51, and 61 that have been processed are positioned at least partially differently in the individual stone layers 41, 51, and 61. Thus, the stone layers 41, 51, and 61 each partially differ from one another with regard to the positioning of the processed upper sides 42a, 47a, 49a or 55a, 57a, 59a or 62a, 64a, 66a. Thus, when laying a paving surface, a paving surface with a random appearance results even if the stone layers 41, 51, and 61 are laid in the same orientation. This is exemplified in the Fig. 7 shown.

[0035] In the Fig. 3a to 3f is a schematic representation of a process flow for processing a Fig. 1a, the first stone layer 1 is shown. In the stone layer 1, the upper sides 2a, 7a and 9a of the concrete blocks 2, 7 and 9 are intended for processing. The upper sides intended for processing are each marked with a St. Andrew's cross. Fig. 3b shows a protective device 80 which is designed as a mask 81. Before processing, the stone layer 1 - as in the Fig. 3c - covered by the mask 81, so that only the surfaces 2a, 7a and 9a intended for processing are visible. In the Fig. 3d then shows a schematic side view of the processing of the first stone layer 1 covered by the mask 81 by a sandblasting device 82, wherein the stone layer 1 lies on a transport base T. The sandblasting device 82 comprises a nozzle 83, from which sand 84 flows in the direction of the stone layer 1 and thereby strikes the mask 81 or one of the surfaces 2a, 7a or 9a. After sandblasting and removal of the mask 81, the stone layer 1 shows in plan view the Fig. 3e shown appearance. In the Fig. 3f shows a side view of a transport unit 85 in which the first stone layer 1 lies directly on a transport pallet 86 and is covered by further stone layers, wherein the stone layers are placed on the transport pallet 86 by a gripper 87 after sandblasting.

[0036] In the Fig. 4a to 4e is a schematic representation of a process flow for processing a Fig. 1a, the first stone layer 1 is shown. In the stone layer 1, the upper sides 2a, 7a and 9a of the concrete blocks 2, 7 and 9 are intended for processing. The upper sides intended for processing are each marked with a St. Andrew's cross. Fig. 3b, the stone layer 1 is shown in side view and rests on a transport base T and is positioned thereon in a processing device V for processing the stone layer 1. The processing device V comprises a sandblasting device 88 with a nozzle 89, from which sand 90 flows towards the stone layer 1. The nozzle 89 is adapted in its width B89 to a width B9 of the concrete block 9 to be processed (see Fig. 4d) and is moved by the processing device V over a length L9 of the concrete block 9 to process the upper side 9a of the concrete block 9 in order to process it over its entire surface. This is shown schematically in the Fig. 4b to 4d. Here, the Fig. 4b and Fig. 4c side views and the Fig. 4d shows the representation of the Fig. 4c in plan view. After processing in the processing device V, the stone layer 1 has the Fig. 4e. The upper surfaces 2a, 7a, and 9a are now sandblasted, while the remaining upper surfaces of the stone layer 1 remain unprocessed. The stone layer 1, processed by the processing device V, is then placed by a gripper 92 onto a transport pallet 93 to form a transport unit 91.

[0037] In the Fig. 5 shows a plan view of a first paved area F1, which consists of three Fig. 1d, wherein stone layers 1, 11, 21, 1', 11', 21', 1'', 11'' and 21'' are each laid in the same orientation with a gripper.

[0038] In the Fig. 6 shows a plan view of a second paved area F2, which consists of three Fig. 1d, wherein stone layers 1, 11, 1', 21', 11'' and 21'' are laid in a first orientation and wherein the stone layers 1'', 11' and 21 are laid in a second orientation in which they are rotated by 180° about vertical axes running into the plane of the drawing relative to the stone layers 1, 11, 1', 21', 11'' and 21''.

[0039] In the Fig. 7 shows a plan view of a third paved area F3, which consists of four Fig. 2d shown transport units 71. The Fig. The transport unit 71 shown in Figure 2d consists of three stone layers 41, 51 and 61, in which - as can be seen from the Fig. 2a to 2c - the positions of the concrete blocks with the machined top surface differ from each other. The twelve stone layers 41, 51, 61, 41', 51', 61', 41'', 51'', 61'', 41''', 51''' and 61''' are in the Fig. 7 for the creation of the paving area F3 from left to right and from bottom to top, whereby the paving area F3 was started with the stone layer 61 lying on top of the first transport unit. Despite the stubborn processing of the four transport units during the setting down of the stone layers, the paving area F3 has a random appearance with regard to the arrangement of machined and unmachined upper surfaces in the paving area F3. Based on a machined concrete block 66' from the stone layer 61', Fig.Figure 7 explains how the position of a concrete block or an upper side of the concrete block in a block layer is determined. A top side 66a' of the concrete block 66' has a center point M66', which has coordinates x66' and y66' in a reference system aligned to a corner of the block layer 61' and its length and width orientation. In particular, the invention provides that deviating positions of machined top sides only occur if they differ from one another, regardless of the orientation of the block layers to be compared.

[0040] The invention is not limited to the illustrated or described embodiments. Rather, it encompasses further developments of the invention within the scope of the patent claims. List of reference symbols: 1, 1', 1'' stone layer 2 to 10 concrete blocks 2a to 10a Top of 2 to 10 11, 11', 11'' stone layer 12 to 20 concrete blocks 12a to 20a Top of 12 to 20 21, 21', 21'' stone layer 22 to 30 concrete blocks 22a to 30a Top of 22 to 30 31 transport units 32 transport pallets 41 stone layer 41' - 41''' Stone layer 42 to 50 concrete blocks 42a to 50a top from 22 to 30 51 stone layer 51' - 51''' Stone layer 52 to 60 concrete blocks 52a to 60a top from 22 to 30 61 stone layer 61' - 61''' Stone layer 62 to 70 concrete blocks 62a to 70a top from 22 to 30 71 transport unit 72 transport pallets 80 protective device 81 Mask 82 sandblasting device 83 nozzle 84 sand 85 transport units 86 transport pallets 87 grippers 88 sandblasting device 89 nozzles 90 sand 91 transport unit 92 grippers 93 transport pallet B9 Width of the concrete block 9 B21 Width of the stone layer 21 B89 Width F1 first paved area F2 second paved area F3 third paved area H21 Height of the concrete blocks of stone layer 21 L9 Length of concrete block 9 L21 Length of stone layer 21 M66' Center of 66' or 66a' T Transport document V Processing device x66' x-coordinate of M66' y66' y-coordinate of M66'

Claims

[1] Method for processing stone layers (1, 11, 21; 41, 51, 61) for mechanical laying, wherein the respective stone layer (1, 11, 21; 41, 51, 61) is formed from a plurality of concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) and wherein the concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) are arranged on a transport base (T) in a parquetry provided for the respective stone layer (1, 11, 21; 41, 51, 61) and are placed against one another for this purpose, characterized by , - that a first part of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) of the respective block layer (1, 11, 21; 41, 51, 61) is selected for a different or additional processing, - that a second part of the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) of the respective block layer (1, 11, 21; 41, 51, 61) is exempted from different or additional processing and - that the upper sides (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) of the first part are machined over their entire surface during the deviating or additional processing. [2] Method according to claim 1, characterized bythat the full-surface, deviating or additional processing of the upper sides (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) of the concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) of the respective block layer (1, 11, 21; 41, 51, 61) is thereby applied to the upper sides (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) of individual concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) is limited in that the upper sides (23a - 26a, 28a, 30a) of the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) to be excluded from the processing during the processing process by a Protective device (80) must be completely covered. [3] Method according to claim 1, characterized bythat a processing device (V) is controlled in such a way that the processing device (V) processes exclusively the first part of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) of the respective block layer (1, 11, 21; 41, 51, 61) selected for processing. [4] Processing device (V) for processing stone layers (1, 11, 21; 41, 51, 61) for mechanical laying, wherein a stone layer (1, 11, 21; 41, 51, 61) is formed from a plurality of concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) and wherein the concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) are arranged in a parquetry provided for the block layer (1, 11, 21; 41, 51, 61) and in particular lie flat against one another, wherein the processing device (V) is designed such that individual concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) can be selected for a different or additional, full-surface processing of their upper side (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) and individual concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) can be removed from a different or additional processing of their upper side (23a - 26a, 28a, 30a), wherein the selection of the concrete blocks to be processed (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) is carried out either by the concrete blocks to be excluded from the deviating or additional processing (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) be actively or passively protected wherein active protection is provided by at least one protective device (80) which covers the upper side (23a - 26a, 28a, 30a) of the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) to be excluded from the different or additional processing, wherein a passive protection prevents the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70) not to be processed from sinking relative to the upper sides (2a, 7a, 9a; 12a, 17a, 19a; 22a, 27a, 29a; 42a, 47a, 49a; 55a, 57a, 59a; 62a, 64a, 66a) of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) or wherein a passive protection comprises a lifting of the concrete blocks (2, 7, 9; 12, 17, 19; 22, 27, 29; 42, 47, 49; 55, 57, 59; 62, 64, 66) to be processed relative to the upper sides (23a - 26a, 28a, 30a) of the concrete blocks (3 - 6; 8; 10; 13 - 16, 18, 20; 23 - 26, 28, 30; 43 - 46, 48, 50; 52 - 54, 56, 58, 60; 63, 65, 67 - 70), wherein the affected concrete blocks (2 - 10; 12 - 20; 22 - 30; 42 - 50; 52 - 60; 62 - 70) of the respective block layer (1, 11, 21; 41, 51, 61) are lowered or raised preferably simultaneously or successively or in groups.

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