EP2843135B1 - Quick-change mount for a compressor roller for a soil compactor - Google Patents

Description

The present invention relates to a change holder for mounting a roller tool on a compactor roller of a soil compactor, comprising a changeover body with a central region, wherein in the central region a holder opening for receiving a holder shaft of a roller tool is provided, and two outgoing from the central region leg portions for fixed connection of the removable body on the outer periphery a compressor roller, wherein the central region and the leg regions surround an exchange holder interior which is open via at least one side opening, according to the preamble of claim 1.

Such a change holder is from the WO 2013/107545 A2 known. On the outer circumference of a compressor roll or a roll shell thereof, a plurality in an axial view - with respect to a rotational axis of the compactor roller - trapezoidal configured alternator set. The changeover holder bodies of the changeover holders are elongate in the circumferential direction and have two circumferentially oriented peripheral sides and two axial sides oriented in the direction of the rotational axis of the compressor roller. The two circumferential sides and also the two axial sides are inclined relative to one another in such a way that the changeover holder is tapered starting from a connection region connected to the compressor roller to a roller tool contact side provided for supporting a roller tool.

In the central region of this change-holder body, a holder opening is formed into which a holder shaft provided on the roller tool can be inserted. To lock the roller tool on the holder body alternating a ring-like locking member is provided surrounding the holder shaft, which in a groove-like Arretierorganaufnahmeöffnung on Wechselhalterkörper on the one hand and a groove-like Arretierorganaufnahmeöffnung on the holder shaft on the other hand is positioned engageable.

The central portion of the change-holder body surrounds with two provided for connecting the same to a compressor roller leg portions a change-holder interior, which is open at the two axial sides of the change-holder body via respective side openings. When carried on the change holder body roller tool of the roll tool provided on the holder shaft extends into the exchange holder interior. To release a locked by a locking member on the exchange holder body roller tool can be intervened with a tool, such as a crowbar or the like, through one of the side openings in the exchange holder interior and pushed out with resolution of the locking engagement in the groove-like Arretieriereaufnahmeöffnung on the holder body of the holder shaft from the holder opening.

During operation of a soil compactor constructed with such a compacting roller, lumps of rock, soil or the like pass through the side openings into the interchangeable holder interior. If a roll tool is to be released from the change holder, it is therefore generally necessary first to remove the material which has penetrated into the change holder interior, which is a very time-consuming operation, in particular if it is wedged or dried in the holder interior.

The US 2,507,968 A discloses a changeover holder for a compacting roller having two side openings. Through one of these side openings through a mandrel-like connecting element is inserted, by which a fixed to the change holder roller tool is fixed to the changeover holder.

It is the object of the present invention to provide a changeover holder for a compactor roller for a soil compactor, in which the process of detaching a roller tool can be carried out substantially unaffected by impurities.

According to the invention this object is achieved by a change holder for attaching a roller tool to a compactor roller of a soil compactor, comprising a changeover body with a central region, wherein in the central region a holder opening for receiving a holder shaft of a roller tool is provided, and two outgoing from the central region leg portions for fixed connection of the removable body on the outer circumference of a compressor roller, wherein the central region and the leg regions surround an exchange holder interior which is open via at least one side opening.

It is further provided that is provided in association with at least one side opening a usable in this end element.

By providing a terminating element which can be inserted into a side opening, the changer holder body can also be sealed against the ingress of contaminants in the areas where the interchangeable-holder interior is basically open via one or more side openings. If it is necessary to engage in releasing a roll tool from the change-over holder body into the change-holder interior, it is necessary first of all to make access via at least one side opening by taking out a closure element inserted in the latter. Elaborate operations for removing penetrated into the Wechselalterinnenraum contaminants are therefore not required.

It is further provided that on at least one end element, a locking area for locking interaction with a counter-locking portion of a to be locked on the change-holder body roller tool is provided. Thus, the closure element not only fulfills the function of keeping contaminants out of the holder interior of the changer, but can additionally fulfill the functionality for locking a roller tool.

It is further provided that the locking area comprises a locking engagement area for engagement in a locking recess of the counter-locking area provided on the holder shaft of a roller tool. The locking engagement can be made simply by first inserting the roller tool with its holder shaft into the holder opening, in such a way that the holder shaft lies with the locking recess of the counter-locking portion in the holder interior. Subsequently, an end member may be inserted into a side opening until it engages with the detent engaging portion provided thereon in the locking recess. It is then generated a pulling out of the holder shaft from the holder opening preventing positive locking.

In order to be able to prevent as far as possible the penetration of contaminants into the changeover holder interior in the changeover holder according to the invention, it is proposed that a side opening inner circumferential contour correspond to a closure element outer peripheral contour.

The changeover holder according to the invention may be constructed such that the changeover holder body has two axial sides which are opposite one another and are oriented substantially in the direction of a rotation axis of a compressor roller and two circumferential sides which are opposite one another and are to be oriented essentially circumferentially about the axis of rotation of a compressor roller, and in that at least one side opening is provided in an axial side of the alternator body. Since a terminating element inserted in such an oriented or positioned side opening is therefore oriented substantially in the direction of a rotational axis of a compressor roller, this is in the compression mode comparatively little load, so that the risk of damage thereof is significantly lower than in a structure in which such a terminating element would be oriented in the circumferential direction.

In order to avoid unintentional detachment of a closure element from the holder body, it is proposed that the closure element can be locked relative to the holder body.

In an embodiment which is advantageous due to the ease of manufacture and the flexible access to a roll tool, it is proposed that two substantially mutually opposite side openings are provided and that a closure element is provided in association with each side opening.

With such a configuration, the fixing of two end elements can be achieved simply by locking two end elements inserted in each other substantially opposite one another by fixing them to one another with respect to the holder body, wherein preferably the end elements can be fixed to one another by screwing together.

In order to ensure that a terminating element to be inserted into a side opening can not penetrate too deeply into this side opening, it is proposed that at least one terminating element has insertion limiting means for limiting an insertion depth of the terminating element into the associated side opening.

In order to ensure a stable locking interaction between the locking engagement region and the locking recess, it is proposed that the locking engagement region is formed on a locking element provided on the closing element, preferably a plate-like locking element.

A particularly stable locking interaction can be achieved in that the locking engagement regions of two end elements can be positioned so as to engage in the retaining recess of the counter-locking region at least partially encompassing the retaining shaft of a roller tool.

In a particularly cost-advantageous further development of the exchange holder according to the invention is proposed that at least one end element is constructed with plastic material and / or rubber material.

The present invention further relates to a change-holder assembly for a compactor roller for a soil compactor, which comprises a change-over holder with a construction according to the invention and at least one roller tool which can be locked thereto.

Furthermore, the invention relates to a compactor roller for a soil compactor with at least one set on an outer circumference of the compressor roller, inventively constructed change holder and preferably also a lockable on this roller tool.

Furthermore, the invention relates to a soil compactor with at least one such compressor roller.

Fig. 1

in Explosionsdarstellung eine Wechselhalteranordnung mit einem Wechelhalter und einem daran arretierbaren Walzenwerkzeug;

Fig. 2

die Wechselhalteranordnung der Fig. 1 am Außenumfang eines Walzenmantels einer Verdichterwalze in Seitenansicht;

Fig. 3

eine Schnittansicht der Wechselhalteranordnung in Fig. 2, geschnitten längs einer Linie III-III in Fig. 2;

Fig. 4

eine Seitenansicht eines in eine Seitenöffnung des Wechselhalters der Fig. 1 einsetzbaren Abschlusselements in Blickrichtung IV in Fig. 5;

Fig. 5

das Abschlusselement der Fig. 4 in perspektivischer Ansicht;

Fig. 6

das Abschlusselement der Fig. 4 in Blickrichtung VI in Fig. 5;

Fig. 7

eine Draufsicht auf das Abschlusselement der Fig. 4.

The present invention will be described below in detail with reference to the accompanying drawings. It shows:

Fig. 1

in an exploded view of a change-holder assembly with a Wechelhalter and a lockable roller tool;

Fig. 2

the changeover holder assembly of Fig. 1 on the outer circumference of a roll shell of a compressor roll in side view;

Fig. 3

a sectional view of the changeover holder assembly in Fig. 2 , cut along a line III-III in Fig. 2 ;

Fig. 4

a side view of a in a side opening of the change holder of Fig. 1 usable end element in the direction of IV in Fig. 5 ;

Fig. 5

the final element of the Fig. 4 in perspective view;

Fig. 6

the final element of the Fig. 4 in viewing direction VI in Fig. 5 ;

Fig. 7

a plan view of the end element of Fig. 4 ,

The in the Fig. 1 to 3 shown exchange holder assembly 10 includes a designated with a generally designated 12 connection area on the outer periphery of a roll shell 11 of a compactor roller of a soil compactor change holder 14. This in the in Fig. 1 Trapezoidally shaped changeover holder 14 is constructed with a generally U-shaped changeover holder body 15 with a central region 17 and two leg portions 16, 18 extending therefrom and is to be secured to the roll jacket 11 by welding to the leg portions 16, 18. At an away from the roll shell 11 to be positioned change tool plant side 20 of the change holder 14 is formed with its change holder body 15 so that it is a in the embodiment of the Fig. 1 and 2 take up rolling tool 22 which has been designed as a padfoot or can support it with its exchangeable support abutment side 23.

The in Fig. 1 also exchange holder body 15 shown in perspective comprises two on the outer circumference of a roll shell preferably in the direction D of a rotational axis of a compressor roller oriented axial sides 24, 26 and two preferably in the circumferential direction U about this compressor roller axis D oriented circumferential sides 28, 30. Both the axial sides 24, 26, as well as the peripheral sides 28, 30 are angled with respect to each other, wherein the inclination angle of the circumferential sides 28, 30 with respect to each other is greater than the inclination angle of the axial sides 24, 26. The change holder body 15 can in the circumferential direction, ie in the direction the peripheral sides 28, 30, be elongated.

At the two leg regions 16, 18, a turf-like projecting soil cultivation projection 34, 36 is provided in each case in a tilling region 32 not covered by the roller tool 22. In compaction or crushing operation, these tillage projections 34, 36 come into contact with the substrate to be processed and can crush rocks or boulders.

In a central region 17 of the changer holder body 15, a holder opening 38 extending in the direction of an opening longitudinal axis L is formed. On the roller tool 22, a holder shaft 40 which can be introduced into this holder opening 40 is provided. Both the holder opening 38, and the holder shaft 40 are formed for example with a circular cross-section.

At the in Fig. 1 recognizable Walzenwerkzeuganlageseite 20 is the holder opening 38 in the exchange holder body 15 surrounding a for opening longitudinal axis L, for example, substantially orthogonally oriented first support surface 48 is provided. At the abutment areas between a respective peripheral side 28, 30 on the axial sides 24, 26 are provided with respect to the opening longitudinal axis L radially outside of the first support surface 48 adjacent second support surfaces 50. Between two provided in association with the same axial side 24 and 26 second support surfaces 50, a third support surface 52 is provided in each case. Correspondingly, respective fourth support surfaces 54 are provided between two respective lateral circumferential sides 28 and 30, respectively, assigned to second support surfaces 50.

The second support surfaces 50, third support surfaces 52 and fourth support surfaces 54 form a facet-like or prismatic surface formation surrounding the first support surface 48 in a ring-like manner, which generally provides a form-fitting engagement formation 56. For supporting interaction therewith, the roller tool 22 has a counter-form-fitting engagement, generally designated 58, on its change-holder contact-side 23. In the four corner regions of the roller tool 22, this comprises respective second counter-support regions 60 which can come into contact with the second support surfaces 50. Between two such second Gegenabstützbereichen 60 is in each case a third Gegenabstützbereich 62, which can occur in supporting interaction with a respective third support surface 52. Accordingly, between two adjacent second Gegenabstützbereichen 60 each fourth Gegenabstützbereiche 64, the in Abutment interaction with a respective fourth support surface 54 can occur. Due to the complementary shaping of the form-fitting engagement formation 56 with the counter-form-fitting engagement formation 58, a uniform load distribution is achieved by the roll tool 22 on the changer body 15 in the compaction or crushing operation. At the same time a certain amount of rotation assurance for the roller tool 22 is provided, since a rotation of the same with respect to the change holder 14 would only be possible if the locking engagement of the locking member 42 in the Arretierorganaufnahmeöffnung 46 of the interchangeable holder 14 repealed and the holder shaft 40 at least partially from the holder opening 38th is pulled out.

Irrespective of the previously described interaction of the form-fitting engagement formation 56 with the counter-form-fit engagement formation 58 or additionally for a further increased rotational strength of the roll tool 22 with respect to the changeable holder 14, on the changer holder body 15 in areas located laterally relative to the holder opening 38 are anti-rotation recesses 70, 72 provided. These radially adjoin the first support surface 48, or may extend into the region of the same, and lie substantially diametrically opposite one another with respect to the holder opening 38 or the opening longitudinal axis L. It can be seen that the two anti-rotation recesses 70, 72 are formed substantially in the region of the third support surfaces 52 and both in the direction of the opening longitudinal axis L in the direction away from the connection region 12, as well as in the direction of the axial sides 24, 26 open. In association with these two anti-rotation recesses 70, 72, anti-rotation projections 78, 80 are provided on the roller tool 22 in areas located laterally relative to the holder shank 40. These are relative to the holder shaft 40 substantially diametrically opposite one another and are dimensioned and positioned so that they engage in the anti-rotation recesses 70, 72 when mounted on the change holder 14 roller tool 22. Thus, a stable rotational fixation for the roller tool 22 with respect to the changer body 15 is generated.

The changeover holder body 15 encloses, with its central region 17 and the two leg regions 16, 18, a changeover holder interior 82, which is open at the two axial sides 24, 26 via respective side openings 84, 86. Toward the compressor roller, the interchangeable holder interior 82 is delimited by the outer surface 88 of the roll shell 11. When inserted into the holder opening 38 holder shaft 40 this extends into the exchange holder interior 82nd

In association with each side opening 84, 86 present in the change-over holder body 15, the change-over holder 14 comprises a respective closing element 90, 92. The closing elements 90, 92 are adapted to the substantially trapezoidal inner peripheral contour of the side openings 84, 86 with a corresponding trapezoidal outer peripheral contour and thus close if they are inserted into a respective associated side opening 84, 86, this advantageously substantially completely from.

In order to ensure a defined insertion depth when inserting the end elements 90, 92 into the side openings 84, 86, the end elements 90, 92 may be formed with an insertion stop 94, 96 projecting, for example, in the direction of the central area 17, which engages on an impact area 98, for example, complementarily shaped can come into abutment on the change-holder body 15 and thus limit the insertion depth for the respective closing element 94, 96 or can also specify a defined positioning thereof with respect to the change-holder body 15.

At each end element 90, 92, a plate-like locking element 100, 102 is provided, which may be fixed, for example, to the respective associated end element 90, 92. While the closing elements 90, 92 may also be constructed for reasons of cost, for example made of plastic material or rubber material or the like, the locking elements 100, 102 are preferably made for stability reasons Metal material or very hard plastic material constructed.

Each locking element 100, 102 forms with a partially circular-shaped edge region 104 or 106 a locking engagement region 108, 110 of a generally designated 112 locking region. An area 114 of the holder shaft 40 which can be positioned in the interchangeable holder interior 82 in an engageable manner is formed around the outer circumference of the holder shaft, an annular groove-like recess 114 of a counter-locking region 116 provided on the holder shank 40. When fully inserted into the holder opening 38 holder shaft 40, the recess 114 is such that upon insertion of the end elements 90, 92 in the side openings 84, 86 provided on the end elements 90, 92 locking elements 100, 102 with their Arretiereingriffsbereichen 108, 110 in the recess 114 engage and thereby encompass the holder shaft 114 almost in its entire peripheral region. As a result, an effective positive engagement in the direction of the opening longitudinal axis L is generated, which prevents disengagement of the roller tool 22 from the change holder 14.

In order to ensure that in the compacting operation the closing elements 90, 92 remain in a defined position in the side openings 84, 86, in particular also the locking interaction with the roller tool 22 is maintained, the closing elements 90, 92 with respect to the holder body 15 can be locked. For this purpose, the two terminating elements 90, 92 inserted into the side openings 84, 86 can be fixed to each other, so that due to the stop action of the insertion stops 94, 96 with the change holder body 15, possibly also due to the locking engagement with the holder shank 40, a lateral displacement of the end elements 90, 92 together with respect to the changeover body 15 is not possible.

The definition of the two end elements 90, 92 can be done in various ways. Thus, on the mutually facing sides of the same latching formations can be provided, through which the two end elements 90, 92 can be locked. In a particularly advantageous and in Fig. 1 recognizable embodiment, this determination of the two end elements 90, 92 takes place with respect to each other by screwing. For this purpose, passage openings 118, 120, for example, are provided in the closing element 92, through which threaded bolts 122, 124 can be guided. In opposite to be positioned closing element 90 are provided in association with the through openings 118, 120 internal thread openings 126, 128, in which threaded portions 130, 132 of the bolts 122, 124 can be screwed. Thus, the cohesion-ensuring by thread interaction with each other areas are completely covered even in the compression mode, so that on the one hand contamination of these areas, on the other hand damage to the same can be avoided. The internal thread openings 126, 128 of the closing element 90 can be provided, for example, by directly providing an internal thread in the building material thereof. In particular, in the embodiment of plastic material or rubber material, it is advantageous to integrate into the closing element 90 internal thread elements, such as nuts or the like.

In order to remove the roller tool 22 from the changeover holder 14, the two end elements 90, 92 are removed from the side openings 84, 86. Since, in order to avoid damaging the closure elements 90, 92 in the compression mode, they are preferably inserted into the side openings 84, 86 such that they are completely immersed or covered to the outside by the changer body 15, the removal of the closure elements 90 , 92 take place in that initially the two bolts 122, 124 are unscrewed from the internal thread openings 126, 128, but not yet completely pulled out of the through holes 118, 120. For still in these through holes 118, 120 extending bolts 122, 124, these can be pressed against each other or in the direction away from each other, so that they are in the through holes 118, 120 spreader and thus can be used to pull the closure element 92 out of the side opening 86. Following this, the other end element 90 can be moved out of the side opening 84 through the side opening 86 and the interchangeable holder interior 82 with a mandrel-type tool. Thus, since the locking interaction of the locking portion 112 with the counter-locking portion 116 is canceled, the roller tool 22 can be pulled out with its holder shaft 40 from the holder opening 38 and thus removed from the exchange holder body 15.

It should finally be noted that in the structure described above a variety of variations can be made without departing from the basic principle. Thus, for example, the interchangeable holder interior 82 could be open only on one side, ie for example an axial side, via a side opening provided there, while on the other side the interchangeable holder interior 82 could be completed by a wall region connecting the two leg regions 16, 18. In this case, only a single end element, for example the end element 92, would have to be inserted into the associated side opening and locked by bolts to be screwed into the previously mentioned wall or, if necessary, in another manner with respect to the holder body 15. In this case, of course, a single such termination element could be used to generate the above-mentioned locking interaction with the holder shaft.

Furthermore, the locking of a roller tool on the changeover holder body 15 could also take place in that the holder shaft 40 carries a ring-like Arretierrastelement that can engage in a provided on the inner circumference of the holder opening 38 groove-like opening. In this case, the one or more terminating elements have no locking areas. The detachment of the roller tool 22 can then, after the removal of the or the closing elements from the associated side openings by a via a side opening in the exchange holder interior 82 to be inserted, for example be done as a crowbar or as a sliding wedge tool.

Also, in principle, the changeover body 15 could be formed with a different shape. Thus, the leg portions 16, 18 may be interrupted between the two axial sides 24, 26 so that a side opening could also be formed on at least one peripheral side 28 and 30, respectively. In principle, an end element to be provided according to the invention could also be used in such a circumferentially oriented side opening. However, since the peripheral sides 28, 30 are much more heavily loaded in the compression mode than the axial sides 24, 26, the introduction of end elements shown in the figures in side openings provided on the axial sides 24, 26 is particularly advantageous.

Claims (13)

1. A quick-change tool holder for the attachment of a roller tool to a compaction roller of a soil compactor comprising a quick-change tool holder body (15) having a central region (17) wherein a holder opening (38) for receiving a holder shaft (40) of a roller tool (22) is provided in the central region (17) and two leg portions (16, 18) originating at the central region (17) for firmly connecting the quick-change tool holder body (15) to the outer periphery of the compaction roller, the central region (17) and the leg portions (16, 18) surrounding an inner space of the quick-change tool holder (82) open over at least one side opening (84, 86),
   characterized in that in association to at least one side opening (84, 86) a closing element (90, 92) is provided, which can be inserted into the latter, that on at least one closing element (90, 92) a locking region (112) for a locking interaction with a counter-locking region (116) of a roller tool (22) to be locked onto the quick-change tool holder body (15) is provided and in that the locking region (112) comprises a locking engagement region (108, 110) to engage in a locking recess (114) of the counter-locking region (116) provided on the holder shaft (40) of a roller tool (22).
2. The quick-change tool holder according to claim 1,
   characterized in that an inner peripheral contour of a side opening corresponds to an outer peripheral contour of a closing element.
3. A quick-change tool holder according to claim 1 or 2,
   characterized in that the quick-change tool holder body (15) has two axial sides (24, 26) mutually opposing one another and essentially to be oriented in the direction (D) of an axis of rotation of a compaction roller, and two peripheral sides (28, 30) mutually opposing one another and essentially to be oriented in the peripheral direction (U) around the axis of rotation of a compaction roller, and that at least one side opening (84, 86) is provided in an axial side of the quick-change tool holder body (15).
4. A quick-change tool holder according to any one of claims 1 to 3,
   characterized in that the closing element (90, 92) can be locked relative to the quick-change tool holder body (15).
5. A quick-change tool holder according to any one of claims 1 to 4,
   characterized in that two essentially opposing side openings (84, 86) are provided, and that a closing element (90, 92) is provided in association with each side opening (84, 86).
6. The quick-change tool holder according to claim 4 and to claim 5,
   characterized in that two closing elements (90, 92) inserted into side openings (84, 86) essentially opposing one another can be locked relative to the quick-change tool holder body (15) by securing them to one another, wherein the closing elements (90, 92) can preferentially be secured to one another by means of screwing.
7. A quick-change tool holder according to any one of claims 1 to 6,
   characterized in that at least one closing element (90, 92) comprises an insertion limiting means (94, 96) to limit an insertion depth of the closing element (90, 92) into the associated side opening (84, 86).
8. The quick-change tool holder one of claims 1 to 7,
   characterized in that the locking engagement region (108, 110) is configured on a preferentially plate-like locking element (100, 102) provided on the closing element (90, 92).
9. The quick-change tool holder according to claim 6 or claim 7 or 8, if referring back to claim 6,
   characterized in that the locking engagement regions (108, 110) of two closing elements (90, 92) can be positioned engaging in the locking recess (114) of the counter-locking region (116), at least sectionally surrounding the holder shaft (40) of a roller tool (22).
10. A quick-change tool holder according to any one of claims 1 to 9,
    characterized in that at least one closing element (90, 92) is made of plastic material or/and rubber material.
11. A quick-change tool holder arrangement for a compaction roller of a soil compactor comprising a quick-change tool holder (14) according to any one of the preceding claims, as well as at least one roller tool (22) that can be locked onto the quick-change tool holder (14).
12. A compaction roller for a soil compactor comprising at least one quick-change tool holder (14) secured to an outer periphery of the compaction roller according to any one of claims 1 to 10, preferentially having a roller tool (22) that can be locked onto the quick-change tool holder.
13. A soil compactor comprising at least one compaction roller according to claim 12.

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