EP3219440B1 - Adapter system for a soil processing machine, soil processing machine and tool used for that purpose - Google Patents

Description

The present invention relates to a processing segment for an adapter system of a soil working machine, an adapter system, a soil working machine and a tool for use with an adapter system according to the invention and / or a soil working machine according to the invention.

Such floor cultivation machines are mostly designed as floor grinding machines and are usually used for surface treatment of floors. With such soil working machines, for example, concrete, asphalt, natural stone or other soil surfaces are ground, polished or otherwise surface-worked. Floor grinding machines are also used to recondition the floor surface, for example to remove glue residue, filler residue, etc.

For this purpose, the soil cultivation machine has a drive shaft to which a grinding tool is attached. As a rule, the grinding tool has a carrier plate with a largely flat processing side facing the soil to be processed, which is set in rotation by the drive shaft. For the sake of clarity, it should be pointed out that the statements “axial” and “radial” used below relate to the longitudinal extension of the drive shaft or to the axis of rotation of the carrier plate or a component comparable to it. By moving the soil working machine over the soil to be worked, the top layer of the soil is worked, in particular removed or sanded, by the rotating grinding tool. Of course, the grinding tool is worn out after a certain period of use, for example depending on the floor to be processed, and must be replaced in order to obtain a satisfactory processing result.

In the known tillage machines, the entire grinding tool is usually dismantled and replaced. On the one hand, this is extremely complex, since the grinding tool is usually secured to a corresponding fastening section of the drive shaft with several screws. On the other hand, the processing surface is firmly connected to the carrier plate so that the entire unit has to be disposed of or recycled. This is not in keeping with the times, not least for reasons of sustainability and environmental protection.

Furthermore, this also increases the costs, in particular the storage and logistics costs. The carrier plates of the grinding tools have a diameter of 230 mm, 270 mm, for example, 280 mm or 400 mm, so that a wholesaler has to keep a large number of such grinding tools in stock. The storage area required for this is accordingly large. At the construction site itself, several of these grinding tools must also be kept available during the processing time in order not to lengthen the processing times due to extended downtimes of the soil cultivating machine.

The aforementioned effects are multiplied by the fact that different grinding tools have to be used depending on the type of soil to be worked or the progress of soil cultivation. For example, a grinding tool with a coarse grain size must first be used for rough machining, with a final fine sanding being carried out with a correspondingly finer grain size of the grinding tool.

Solutions are also known from the prior art in which individual machining segments are fixed on a carrier plate, for example in FIG DE 202 20 969 U1 shown. Nevertheless, here too, the processing surfaces or structures are firmly connected to a solid sub-carrier, which in turn is screwed or soldered onto the carrier plate. In the event of an individual exchange of the processing segments that is not envisaged anyway, the entire subcarrier must be laboriously dismantled, if at all possible. Furthermore, in the case of a screw connection, the entire surface of the sub-carrier is also not available as a machining area, since at least there must always be passage areas for the screws.

WO 2007/072273 A2 discloses a soil working machine with a grinding tool. The grinding tool has a base plate, a releasable connecting element, a carrier, a membrane, a mat and diamond tools attached thereto. A variant is also shown in which several grinding inserts are attached to the base plate. The solutions shown still have disadvantages in terms of manageability and flexibility.

It is therefore the object of the present invention to minimize or eliminate the aforementioned disadvantages occurring during soil cultivation with soil cultivation machines and, in particular, to show a more sustainable system with a significantly reduced cost.

The object is achieved with an adapter system for a soil working machine according to claim 1, a soil working machine according to claim 13 and a tool for use therefor according to claim 14. Advantageous further developments are described in the dependent claims.

The adapter system according to the invention can be attached to a soil cultivating machine. The adapter system is distinguished from the adapter systems known from the prior art in that the adapter system has a receiving side with at least one receptacle, the receptacle having several second fastening elements for the detachable fastening of one Has machining segment in the recording. This has the advantage that, on the one hand, no great effort is required for replacing a machining segment. On the other hand, the manageability is significantly improved, since the entire adapter system in the sense of a carrier plate with a processing surface fixed on it is not exchanged. Rather, the adapter system remains on the soil cultivation machine and only the cultivation segment, which is significantly smaller in size, is replaced if necessary.

The second fastening element has a spring unit. It can thus be ensured that the at least one processing segment received in the at least one receptacle can adapt to unevenness in the floor due to the floating mounting. Furthermore, this also prevents the machining surface from being subject to increased wear due to excessive contact pressure. Of course, the spring unit can also be designed as a damper unit or in combination with such, without this being a disadvantage for the processing result.

It is advantageous if the second fastening element has at least one torsionally rigid second connecting means for non-positive and / or positive fastening of the machining segment. In particular, it has proven to be advantageous if the second connecting means is a hook and loop means. Correspondingly, the complementary Velcro is arranged on the processing segment. The processing segment can thus be fastened to the adapter system with reduced effort by placing the processing segment on or off the adapter system essentially in the axial direction, without the need for further fastening work, as would be the case, for example, when tightening or loosening a screw.

It is advantageous if the spring unit is a composite component. In the context of the invention, a composite component should be understood to mean a component that has a metal part and a plastic part that is inseparably connected to the metal part. In particular, the plastic part is a foamed plastic. The foamed plastic or its material properties are selected so that the desired resilience of the machining segment is achieved. The result is a sandwich-like structure, at least consisting of a plastic part, a metal part and a second connecting means, preferably in the order mentioned. It is also conceivable that the spring unit or a further spring unit is arranged on the processing segment if this is necessary for the intended use. It is also conceivable that the plastic part is arranged between two metal parts in order to achieve a particularly stable fastening.

The adapter system is expediently designed in the shape of a disk, in particular a circular disk, the adapter system having a plurality of receptacles, preferably arranged in a circle on the receiving side, for receiving machining segments. It has been shown that it is particularly advantageous if the receptacles have an area proportion of 25% to 50%, in particular from 30% to 45% and particularly advantageously from 35% to 40% of the receiving area, so that a a particularly good machining result is achieved since the machining surfaces of the machining segments arranged in the receptacles make up an equal proportion of the surface area. In this context it is advantageous if the receptacles are arranged essentially along the circumference of the adapter system. It is advantageous if the receptacles are arranged only along the circumference, that is to say lying on the outside in the radial direction with respect to the axis of rotation of the adapter system. It has been shown that with receptacles arranged relatively close to the axis of rotation of the adapter system, an uneven loading of the machining segments arranged in the receptacles can occur. On the one hand, this can lead to uneven wear of the machining segments. On the other hand, this can also result in a heterogeneous machining result which, under certain circumstances, is further worsened by the uneven wear.

It is advantageous if the at least one receptacle has at least one delimiting wall, the delimiting wall extending in the axial direction from the receiving side of the adapter system. In particular, the boundary wall is designed so that a processing segment arranged in the receptacle is arranged at least during operation of the soil cultivating machine essentially within the receptacle or in the axial direction inwardly with respect to the boundary wall, the processing surface of the processing segment being axially separated from the boundary wall protrudes. This can prevent a machining segment from migrating - for example due to the centrifugal forces that occur. Of course, the boundary wall is designed in such a way that it does not come into contact with the soil to be worked even when the spring unit is acted upon during operation of the soil cultivation machine with an axially inwardly acting force. It is also conceivable that during operation the machining segment displaces the axially inwardly acting force against the spring force of the spring unit in such a way that the machining segment is only then prevented from migrating by the boundary wall.

It is useful here if the boundary wall has at least one tool opening for receiving a tool. In this way, the tool can be introduced in order to remove a machining segment received in the receptacle quickly and largely without effort.

In operation, the adapter system has at least one processing segment according to the invention, the at least one processing segment being fastened in the at least one receptacle. It has been shown that a particularly good machining result is achieved if preferably several machining segments are fastened in several receptacles, in particular if six receptacles are provided in a circular arrangement along the circumference of the adapter system.

The machining segment preferably has a base body with a machining side and a fastening side. The fastening side is arranged on the side of the base body opposite the machining side. The fastening side has according to the invention, at least one first fastening element for releasably fastening the machining segment to the adapter system, the machining side being designed as a closed machining surface

In other words, the processing segment has two sides, the processing segment being attachable to an adapter system with the attachment side. In addition, the processing surface is designed to be completely closed, that is to say without openings, receptacles or holes for locking means such as screws or the like. In this way, the effectively available machining area is increased, so that overall a longer useful life of the machining segment can be achieved. Furthermore, the machining segment according to the invention consists essentially only of a base body with a fastening side and a machining side, so that in the event of an exchange, only the individual machining segment has to be exchanged. The adapter system, which takes on the function of the carrier plate, remains firmly connected to the soil cultivation machine and does not have to be laboriously dismantled or disposed of.

It is advantageous if the first fastening element has at least one torsionally rigid first connection means for positively and / or non-positively fastening the machining segment. In particular, it has proven to be advantageous if the first connecting means is a hook and loop means. Correspondingly, the complementary Velcro is arranged on the adapter system. The processing segment can thus be fastened to the adapter system with reduced effort by placing the processing segment on or off the adapter system essentially in the axial direction without the need for further fastening work (such as tightening or loosening screws). Furthermore, the processing surface can thus also extend over the entire processing side facing the floor during operation, since no openings or the like are necessary for receiving screws, for example. Rather, the first connecting means designed as Velcro does not have to be accessible with a tool or the like for fastening.

The base body is expediently designed in the form of a disk, in particular a circular disk. In this connection it is advantageous if the base body has a diameter of 60 mm to 150 mm, advantageously 80 to 130 mm and in particular 100 mm. This results in a sufficiently large processing area with simultaneously reduced space requirements. Overall, this results in particularly good manageability of the individual processing segment.

It is advantageous if the machining surface has metal-bonded and / or diamond-bonded and / or plastic-bonded grinding structures. Depending on the type of soil to be processed, a suitable processing segment can be selected in order to achieve an optimal processing result while at the same time reducing the amount of dust.

The object is also achieved with a soil cultivating machine according to claim 13, which has an adapter system according to the invention. In particular, the floor working machine is a floor grinding machine.

Furthermore, a tool is proposed according to the invention, the tool being used for use with an adapter system according to the invention and / or a soil cultivating machine according to the invention. The tool has a nose and a lever shaft, the nose being insertable between the receiving side of the adapter system and the fastening side of the machining segment in such a way that the machining segment can be removed from the holder by moving the lever shaft relative to the adapter system. In this way, a machining segment fastened in the receptacle can be removed quickly from the receptacle by moving the lever shaft with little effort, for example if a wear-related replacement is due.

Fig. 1A

eine perspektivische Ansicht eines Bearbeitungssegments gemäß einer ersten Ausführungsform;

Fig. 1B

eine perspektivische Ansicht eines Bearbeitungssegments gemäß einer zweiten Ausführungsform;

Fig. 2

eine perspektivische Rückansicht eines Bearbeitungssegments;

Fig. 3

eine perspektivische Ansicht eines Adaptersystems ohne zweite Befestigungselemente und ohne aufgenommene Bearbeitungssegmente;

Fig. 4

das in Fig. 3 gezeigte Adaptersystem mit zweiten Befestigungselementen;

Fig. 5

das in Fig. 4 gezeigte Adaptersystem mit aufgenommenen Bearbeitungssegmenten;

Fig. 6

eine Seitenansicht eines zweiten Befestigungselements;

Fig. 7

eine perspektivische Ansicht eines Werkzeugs;

Fig. 8

eine perspektivische Ansicht des in Fig. 7 gezeigten Werkzeugs zum Entfernen eines Bearbeitungssegments aus einem Adaptersystem;

Fig. 9

eine zweite Ausführungsform eines erfindungsgemäßen Adaptersystems mit nur einem zweiten Befestigungselement; und

Fig. 10

eine Bodenbearbeitungsmaschine mit einem Adaptersystem und darin aufgenommenen Bearbeitungssegmenten.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings. Here show schematically:

Figure 1A

a perspective view of a machining segment according to a first embodiment;

Figure 1B

a perspective view of a machining segment according to a second embodiment;

Fig. 2

a perspective rear view of a machining segment;

Fig. 3

a perspective view of an adapter system without second fastening elements and without recorded processing segments;

Fig. 4

this in Fig. 3 shown adapter system with second fastening elements;

Fig. 5

this in Fig. 4 adapter system shown with recorded machining segments;

Fig. 6

a side view of a second fastening element;

Fig. 7

a perspective view of a tool;

Fig. 8

a perspective view of the in Fig. 7 shown tool for removing a machining segment from an adapter system;

Fig. 9

a second embodiment of an adapter system according to the invention with only a second fastening element; and

Fig. 10

a soil cultivating machine with an adapter system and cultivation segments received therein.

In Figure 1A a machining segment 1 is shown, which has a circular disk-shaped base body 2 with a machining side 3 and a fastening side 4 (cf. Fig. 2 ) having. How to get out Figure 1A and Fig. 2 recognizes, the processing side 3 is arranged on one side of the base body 2, and the fastening side 4 is arranged on the other side of the base body 2 opposite the processing side 3. The fastening side 4 has a first fastening element 6. The fastening element 6 has a torsionally rigid first connecting means 7, which is also essentially in the form of a circular disk and largely covers the fastening side 4, as in FIG Fig. 2 shown. In this exemplary embodiment, the first connecting means 7 is a Velcro means which enables a rotationally rigid fastening.

As in Figure 1A the machining side 3 is shown as a closed machining surface 5. The machining surface 5 has grinding structures 8 which extend in the axial direction from the machining side 3. In the in Figure 1A The embodiment shown, four centrally arranged octagonal grinding structures 8 are provided, as well as four further polygonal grinding structures 8 arranged on the circumference of the machining segment 1.

Another exemplary embodiment for a machining segment 1 according to the invention is shown in FIG Figure 1B shown. This differs from the one in Figure 1A embodiment shown only in the shape and the arrangement of the grinding structures 8. As in Figure 1B shown, the grinding structures 8 can also be designed in the shape of a round cylinder. The grinding structures 8 can be designed as metal-bonded, diamond-bonded and / or plastic-bonded grinding structures 8. Depending on which type of soil cultivation is to be carried out, suitable cultivation segments 1 are selected and attached to an adapter system 10, as will be explained in more detail below.

In the Figs. 3 to 5 an inventive adapter system 10 is shown, wherein Fig. 3 shows the adapter system without second fastening elements 13, Fig. 4 shows the adapter system 10 with second fastening elements 13 and Fig. 5 shows the adapter system 10 with processing segments 1 attached thereto. As can be seen in the figures, the adapter system 10 is designed in the shape of a circular disk.

The adapter system 10 has a receiving side 11 with several receptacles 12 for receiving machining segments 1 (cf. Fig. 5 ). In the exemplary embodiment shown, the adapter system 10 has six receptacles 12 which are arranged in a circle at regular intervals along the circumference U of the adapter system 10. As in Fig. 4 As shown, each receptacle 12 has four second fastening elements 13. The fastening elements 13 have the same structure, are designed as round cylinders and are arranged uniformly within the receptacle 12.

In Fig. 6 a cut-free second fastening element 13 is shown in side view. The fastening element 13 has a torsionally rigid second connecting means 14. The second The connecting means 14 extends essentially parallel to the receiving side 11 of the adapter system 10. In this exemplary embodiment, the second connecting means 14 is a Velcro means which is complementary to the first connecting means 6, which is also designed as a Velcro means. Other torsionally rigid connection means 6 and 14 are also conceivable, for example in the form of a bayonet lock or the like.

The second fastening element 13 also has a spring unit 15. The spring unit 15 is a composite component which has a metal part 16 and a plastic part 17. The metal part 16 is designed in the shape of a circular disk and is arranged between the second connecting means 14 and the plastic part 17. In this exemplary embodiment, the plastic part 17 is a plastic foam part with certain elastic properties that define the resilience or damping behavior of the spring unit 15.

Furthermore, the second fastening element 13 has a central through hole 20 for receiving a locking means (not shown in detail). Thus, the second fastening element 13 can be fixed to the receptacle 12 of the adapter system 10 via a corresponding locking means receptacle 21.

The receptacles 12 of the adapter system 10 also have boundary walls 18. The boundary walls 18 extend in the axial direction from the receiving side 11 of the adapter system 10 and form an essentially circular delimitation of the seat 12. Furthermore, the boundary walls 18 each have two openings 19 per seat 12. The openings 19 point radially outward and are arranged along the circumference U of the adapter system 10. The openings 19 serve to accommodate a tool 100, as will be explained in more detail below.

The boundary walls 18 of the individual receptacles 12 are connected to one another with stiffening ribs 22, which likewise extend in the axial direction from the receptacle side 11 of the adapter system 10 and stabilize the adapter system 10 in themselves. As in Fig. 3 As can be seen, the stiffening ribs 22 are arranged in a star shape, pointing radially inward. Furthermore, two arcuate stiffening ribs 22 running in the direction of the circumference U of the adapter system 10 are arranged between the individual receptacles 12.

To fasten a machining segment 1 to the adapter system 10, the machining segments 1 are inserted in the axial direction into the corresponding receptacle 12 until the first connecting means 7 of the machining segment 1 comes into contact with the second connecting means 14 of the receptacle 12 of the adapter system 10. The machining segment 1 is then releasably fastened in the receptacle 12 by applying slight pressure in the axial direction. Since the first connecting means 6 almost completely covers the fastening side 4 of the machining segment 1 (see FIG Fig. 2 ), the orientation of the machining segment 1 relative to the receptacle 12 is irrelevant.

To remove a machining segment 1 from a receptacle 12, this is shown in FIG Fig. 7 Tool 100 shown to use. The tool 100 has a nose 101 and a lever shaft 102. The nose 101 is connected to the lever shaft 102 via a curved transition piece 103. Furthermore, the nose 101 is designed such that it can be introduced into the receptacle 12 through an opening 19 of a delimiting wall 18 of a receptacle 12, as shown in Fig. 8 is shown. In this state, the nose 101 is arranged in the axial direction between the receiving side 11 of the adapter system 10 and the fastening side 4 of the machining segment 1. By moving the lever shaft 103 relative to the adapter system 10, the tool 100 tilts in the area of the rear edge of the nose 101, so that the nose 101 is displaced in the direction of the fastening side 4 of the machining segment 1. The nose 101 contacts the fastening side 4 of the machining segment 1 and presses the machining segment 1 in the axial direction out of the receptacle 12. Here, the connection between the first fastening element 6 of the machining segment 1 and the four second fastening elements 13 of the receptacle 12 is released and the machining segment 1 can be lifted from the adapter system 10.

In Fig. 9 a second embodiment of the adapter system 10 according to the invention is shown. This in Fig. 9 The adapter system 10 shown differs from the adapter system described above in that the receptacle 12 has only one second fastening element 13a. The second fastening element 13a shown in this figure is constructed essentially the same as that in FIG Fig. 6 second fastening element 13 shown, that is to say with a spring unit 15 designed as a composite component. Since the second fastening element 13a according to FIG Fig. 9 largely completely fills the receptacle, the second fastening element 13 has two incisions 23 for receiving the nose 101 of the tool 100. In Fig. 9 the tool 100 is shown by way of example, the nose 101 being received within an incision 23. One can clearly see that the nose 101 extends through the opening 19 and is arranged between the receiving side 11 of the adapter system and the machining side 4 of the machining segment 1 (not shown).

In Fig. 10 a soil cultivating machine 200 is shown. The floor processing machine 200 is a floor grinding machine and has an adapter system 10 according to the invention with six processing segments 1 according to the invention attached to it. When the soil working machine 200 is in operation, the grinding structures 8 of the working surface 5 of the working segment 1 rest on the soil surface to be worked. The drive shaft (not shown) of the soil cultivating machine 200 sets the adapter system 10 and the processing segments 1 fastened thereon in a rotationally rigid manner in rotation so that the surface is processed, in particular removed in layers by the grinding structures 8. Due to the floating mounting of the machining segments 1 generated by the spring units 15, an optimal machining result is achieved.

REFERENCE LIST

1

Machining segment

2

Base body

3

Edit page

4th

Mounting side

5

Working area

6th

first fastening element

7th

first lanyard

8th

Grinding structure

10

Adapter system

11

Recording side

12th

admission

13

second fastening element

13a

second fastening element

14th

second lanyard

15th

Spring unit

16

Metal part

17th

Plastic part

18th

Boundary wall

19th

breakthrough

20th

Through hole

21st

Locking device mount

22nd

Stiffening rib

23

incision

100

Tool

101

nose

102

Lever shaft

103

Transition piece

200

Tillage machine

U

scope

Claims (14)

1. Adapter system (10) for a floor-processing machine (200), the adapter system (10) being mountable to the floor-processing machine (200), and the adapter system (10) comprises a receiving side (11) with at least one receptacle (12), characterized in that the receptacle (12) comprises a plurality of second mounting elements (13) for detachably fastening a processing section (1) in the receptacle (12), and the second mounting element (13) comprises a spring unit (15).
2. Adapter system (10) according to claim 1, characterized in that the second mounting element (13) comprises at least one torsionally stiff second connection means (14) for friction-fittedly and/ or form-fittedly fastening the processing section (1).
3. Adapter system (10) according to claim 1 or 2, characterized in that the spring unit (15) is a composite component (16, 17).
4. Adapter system (10) according to one of the preceding claims, characterized in that the adapter system (10) is formed disk-shaped, in particular round disk-shaped, wherein the adapter system (10) comprises several receptacles (12) arranged on the receiving side (11), preferably circularly, for receiving processing sections (1).
5. Adapter system (10) according to claim 4, characterized in that the receptacles (12) being substantially arranged along the circumference (U) of the adapter system (10).
6. Adapter system (10) according to one of the preceding claims, characterized in that the at least one receptacle (12) comprises at least one boundary wall (18), wherein the boundary wall (18) extends from the receiving side (11) of the adapter system (10) in axial direction.
7. Adapter system (10) according to claim 6, characterized in that the boundary wall (18) comprises at least one tool breakthrough (19) for receiving a tool (100).
8. Adapter system (10) according to one of the preceding claims, characterized in that the adapter system (10) comprises at least one processing section (1), wherein the at least one processing section (1) is mounted in the at least one receptacle (12) of the adapter system (10), wherein the processing section (1) comprises a base body (2) with a processing side (3) and a mounting side (4), wherein the mounting side (4) is arranged on the opposite side of the processing side (3) of the base body (2), wherein the mounting side (4) comprises at least one first mounting element (6) for detachably fastening the processing section (1) to the adapter system, and wherein the processing side (3) is formed as a closed processing surface (5).
9. Adapter system (10) according to claim 8, characterized in that the first mounting element (6) comprises at least one torsionally stiff first connection means (7) for friction-fittedly and/ or form-fittedly fastening the processing section (1).
10. Adapter system (10) according to claim 8 or 9, characterized in that the base body (2) is formed disk-shaped, in particular round disk-shaped.
11. Adapter system (10) according to claim 10, characterized in that the base body (2) has a diameter from 60 mm to 150 mm, preferably from 80 to 130 mm and particularly of 100 mm.
12. Adapter system (10) according to one of the claims 8 to 11, characterized in that that the processing surface (5) comprises metal-bonded, diamond-bonded and/ or plastic-bonded grinding profiles (8).
13. Floor-processing machine (200) with an adapter system (10) according to one of the preceding claims, wherein the floor-processing machine (200) is in particular a floor grinding machine.
14. Tool (100) with an adapter system (10) according to one of the claims 1 to 12 or a floor-processing machine (200) according to claim 13, wherein the tool (100) comprises a nose (101) and a lever shaft (102), wherein the nose (101) is insertable in between the receiving side (11) of the adapter system (10) and the mounting side (4) of the processing section (1) such that the processing section (1) is removable from the receptacle (12) by moving the lever shaft (102) relative to the adapter system (10).

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