Abstract
A multi-part support element for spacing carrier elements, includes an upper part and a lower part, wherein the upper part can be detachably axially connected to the lower part by a rotary connection in order to fix a carrier element between the upper part and the lower part, the rotary connection is formed by a stud provided on the lower part and an opening provided on the upper part, into which the stud can be screwed, and the rotary connection is implemented such that the rotary connection is released again after defined screwing of the stud into the opening, such that the stud is locked in the opening with axial play, and wherein the lower part has a disk-shaped attachment, whose layer thickness decreases toward the edge.
Claims
1. A multi-part support element for spacing carrier elements, comprising an upper part and a lower part, wherein the upper part is configured to be detachably axially connected to the lower part by a rotary connection in order to fix a carrier element between the upper part and the lower part, the rotary connection is formed by a stud provided on the lower part and an opening provided on the upper part, into which the stud is to be screwed, and the rotary connection is implemented such that the rotary connection is released again after defined screwing of the stud into the opening, such that the stud is locked in the opening with axial play, and wherein the lower part has a disk-shaped attachment, whose layer thickness decreases toward the edge.
2. The multi-part support element according to claim 1, wherein a top of the disk-shaped attachment is conical or substantially dome-shaped up to the stud.
3. The multi-part support element according to claim 1, wherein a bottom of the disk-shaped attachment is substantially planar.
4. The multi-part support element according to claim 1, wherein the rotary connection is implemented as a screw connection, the stud provided on the lower part has an external thread, and the opening provided on the upper part has an internal thread.
5. The multi-part support element according to claim 4, wherein the stud has a flattened region or a groove in the region of the external thread, on at least one side and the flattened region or the groove extends substantially parallel to the direction of extension of the stud.
6. The multi-part support element according to claim 5, wherein the flattened region or the groove extends over the complete length of the external thread.
7. The multi-part support element according to claim 4, wherein the stud, viewed from its free end, has an undercut behind the external thread, and the opening, viewed from the bottom of the upper part, has a corresponding undercut behind the internal thread.
8. The multi-part support element according to claim 1, wherein the rotary connection is implemented as a bayonet connection, and at least one protrusion, which is provided on the stud, engages in at least one slot-shaped guide provided in the opening of the upper part such that a plug-and-turn connection can be established, wherein the slot-shaped guide extends in such a way that upon insertion of the stud into the opening, the protrusion guided in the slot-shaped guide can exit this guide to disengage the rotary connection after insertion of the stud into the opening such that the stud is subsequently locked in the opening with axial play.
9. The multi-part support element according to claim 1, wherein the upper part has, at its lower axial end, a widened edge region with a seating surface, with which it rests on a carrier element fixable between the upper part and the lower part of the support element.
10. The multi-part support element according to claim 1, wherein the upper part has a centering collar on its bottom directly adjacent the opening.
11. The multi-part support element according to claim 1, additionally comprising a tubular support, wherein the tubular support is pushed over the upper part.
12. A kiln shelf element, comprising: a carrier element having a bottom, a top opposite the bottom, and at least one bore, wherein the bore is enlarged toward the bottom; and at least one support element according to claim 1; wherein the carrier element is fixed between the upper part and the lower part of the multi-part support element, and the disk-shaped attachment of the lower part of the support element is accommodated in the bore such that the support element does not protrude from the carrier element at the bottom of the carrier element.
13. A kiln shelf at least comprising a lower carrier element and at least one upper carrier element, wherein each of the lower carrier element and the upper carrier element is fixed in at least one support element according to claim 1 between the upper part and the lower part, and the bottom of the lower part of the at least one support element, which fixes the upper carrier element, or the bottom of the upper carrier element rests on the upper part or the tubular support of the support element, which fixes the lower carrier element.
14. The kiln shelf according to claim 13, wherein the lower carrier element and/or the at least one upper carrier element is plate-shaped.
15. The kiln shelf according to claim 13, wherein the lower carrier element and/or the at least one upper carrier element is implemented as a plate stand.
16. The multi-part support element according to claim 5, wherein the stud has a flattened region or a groove in the region of the external thread, on two sides opposite one another.
Description
[0036] The invention is explained in detail with reference to drawings. The drawings are schematic representations and not to scale. The drawings in no way restrict the invention. They depict:
[0037] FIG. 1 a perspective view of an embodiment of an upper part of a support element according to the invention,
[0038] FIG. 2 a side view of another embodiment of an upper part of a support element according to the invention,
[0039] FIG. 3 a cross-section of the upper part of FIG. 2 along the section line A-A,
[0040] FIG. 4 a perspective view of another embodiment of an upper part of a support element according to the invention,
[0041] FIG. 5 a perspective view of an embodiment of a lower part of a support element according to the invention,
[0042] FIG. 6 a side view of another embodiment of a lower part of a support element according to the invention,
[0043] FIG. 7 a cross-section of the lower part of FIG. 6 along the section line A-A,
[0044] FIG. 8 a side view of an embodiment of a kiln shelf element according to the invention,
[0045] FIG. 9 a detail of a cross-section of the kiln shelf element according to the invention of FIG. 8 along the section line A-A,
[0046] FIG. 10 a detail of a cross-section of another embodiment of a kiln shelf element according to the invention,
[0047] FIG. 11 a detail of a cross-section of another embodiment of a kiln shelf element according to the invention,
[0048] FIG. 12 a side view of an embodiment of a kiln shelf according to the invention,
[0049] FIG. 13 a cross-section of a detail of the kiln shelf of FIG. 12 along the section line A-A,
[0050] FIG. 14 a cross-section of a detail of another embodiment of a kiln shelf according to the invention,
[0051] FIG. 15 a cross-section of a detail of another embodiment of a kiln shelf according to the invention,
[0052] FIG. 16 a perspective view of an embodiment of a kiln shelf element according to the invention,
[0053] FIG. 17 a perspective bottom view of a detail of the kiln shelf element of FIG. 16,
[0054] FIG. 18 a perspective view of an embodiment of a kiln shelf according to the invention,
[0055] FIG. 19 a perspective view of another embodiment of a kiln shelf according to the invention,
[0056] FIG. 20 a perspective view of a detail of the kiln shelf of FIG. 19,
[0057] FIG. 21 a perspective view of another embodiment of an upper part of a support element according to the invention,
[0058] FIG. 22 a perspective view of a detail of the upper part of FIG. 21,
[0059] FIG. 23 a cross-section of the upper part of FIG. 21,
[0060] FIG. 24 a perspective view of another embodiment of a lower part of a support element according to the invention,
[0061] FIG. 25 a detail of a cross-section of another embodiment of a kiln shelf element according to the invention, and
[0062] FIG. 26 a perspective view of another embodiment of a lower part of a support element according to the invention.
[0063] FIG. 1 depicts a perspective view of an embodiment of an upper part 20 of a support element 10 according to the invention. The upper part 20 depicted in FIG. 1 is implemented as a hollow body. The through-opening 21 has an internal thread 22, i.e., an internal thread 22 is arranged in sections on the inner cylindrical surface 27 (not provided with a reference character in FIG. 1). In the embodiment depicted in FIG. 1, the internal thread 22 is not arranged directly adjacent the bottom 28 of the upper part 20. However, it is also possible for the internal thread 22 to be arranged directly adjacent the bottom 28. Viewed from the bottom 28 of the upper part 20, the opening 21 has, behind the internal thread 22, a region with an enlarged diameter (undercut) 23 (not shown in FIG. 1). In the embodiment depicted in FIG. 1, the upper part 20 has, at its lower end, a widened edge region 24 with a bottom seating surface 25, which is suitable for resting solidly on a shelf 40 to be fixed between an upper part 20 and a lower part 30. Finally, the upper part 20 also includes a top circular ring surface 26a, on which, in the assembled state of a kiln shelf, the lower part 30 of the next highest support element 10 can be arranged. In the embodiment depicted in FIG. 1, the circular ring surface 26a is widened at the top 26 of the upper part 20 compared to the cylindrical middle section of the upper part 20.
[0064] FIG. 2 depicts a side view of another embodiment of an upper part 20 of a support element 10 according to the invention. The embodiment depicted in FIG. 2 differs from the embodiment depicted in FIG. 1 in that the circular ring surface 26a at the top 26 of the upper part 20 is not widened compared to the cylindrical middle section of the upper part 20; and, in the widened edge region 24, the surface opposite the bottom seating surface 25 is implemented parallel to the seating surface 25. In addition, in the embodiment depicted, the lower part 20 has, on the bottom 28, a centering collar 29, which is arranged directly adjacent the opening 21. This centering collar 29 is suitable to be accommodated in the bore 41 of a shelf 40 to be fixed between the upper part 20 and the lower part 30 and thus to secure the upper part 20 against lateral slippage.
[0065] FIG. 3 depicts a cross-section of the upper part 20 of FIG. 2 along the section line A-A. It can be seen from FIG. 3 that the opening 21 has, viewed from the bottom 28 of the upper part 20, a region with an enlarged diameter (undercut) 23 behind the internal thread 22. In the embodiment depicted in FIG. 3, the internal thread 22 is not arranged directly adjacent the bottom 28 of the upper part 20. However, it is also possible for the internal thread 22 to be arranged directly adjacent the bottom 28.
[0066] FIG. 4 depicts a perspective view of another embodiment of an upper part 20 of a support element 10 according to the invention. This embodiment differs from the embodiment depicted in FIG. 1 in that the circular ring surface 26 at the top 26a of the upper part 20 is not widened compared to the cylindrical middle section of the upper part 20 and the upper part 20 also does not have a widened edge region 24 on the bottom 28.
[0067] FIG. 5 depicts a perspective view of an embodiment of a lower part 30 of a support element 10 according to the invention. The lower part 30 comprises a centrally arranged stud 31 and a disk-shaped attachment 34, whose layer thickness decreases toward the edge. In the embodiment depicted in FIG. 5, the bottom 36 of the disk-shaped attachment is planar and its top 37 is conical up to the stud 31. The stud 31 has an external thread 32 directly adjacent its free end. The external thread 32 is implemented such that it can be screwed into the internal thread 22 of the upper part 20 depicted in FIG. 1 through 4. Below the external thread 32, the stud 31 has an undercut 33 with a reduced diameter compared to the thread core.
[0068] FIG. 6 depicts a side view of another embodiment of a lower part 30 of a support element 10 according to the invention. The lower part 30 depicted in FIG. 6 essentially corresponds to the lower part 30 depicted in FIG. 5 such that in the following only the differences are discussed. In the embodiment depicted in FIG. 5, the bottom 36 of the disk-shaped attachment is planar and its top 37 is essentially dome-shaped up to the stud 31.
[0069] FIG. 7 depicts a cross-section of the lower part of FIG. 6 along the section line A-A.
[0070] FIG. 8 depicts a side view of an embodiment of a kiln shelf element 50 according to the invention. The kiln shelf element 50 comprises a carrier element 40 and two support elements 10 according to the invention, with only the upper parts 20 of the support elements visible, since the lower parts 30 are completely covered by the upper parts 20 and the carrier element 40. The upper parts 20 are implemented like the upper part 20 depicted in FIG. 1.
[0071] FIG. 9 depicts a detail of a cross-section of an embodiment of the kiln shelf element 50 according to the invention of FIG. 8 along the section line A-A. The detail depicts the cross-section through an upper part 20, a lower part 30, and a carrier element 40 fixed therebetween. The upper part 20 is an upper part 20 as depicted in FIG. 1, and the lower part 30 is a lower part 30 as depicted in FIG. 5. The carrier element 40 fixed between the lower part 30 and the upper part 20 has a bore 41 that is widened toward the bottom 43 of the carrier element 40. The bore widening 42 corresponds to a negative surface structure analogous to the conical top 37 of the disk-shaped attachment 34. The disk-shaped attachment 34 of the lower part 30 is, in sections, accommodated essentially flush in the bore widening 42 of the carrier element 40, i.e., it is countersunk in the carrier element 40, and the bottom 36 of the lower part 30 does not protrude from the bore 41 at the bottom 43 of the carrier element 40. In the embodiment depicted in FIG. 9, the disk-shaped attachment 34 has a hexagonal recess 38 for a hex key.
[0072] Both the upper part 20 and the lower part 30 of the support element 10 as well as the carrier element 40, implemented here as a simple firing batt, are made of highly temperature resistant but also brittle ceramic material, such as silicon carbide or mullite. As can be seen in FIG. 9, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by additional carrier elements 40, support elements 10, and items to be fired (not shown) resting thereon do not stress the stud 31, but are instead dissipated via the surfaces 26a, 25, 35, and 36 of the upper part 20 and of the lower part 30 of the support element 10 provided for this.
[0073] FIG. 10 depicts a detail of a cross-section of another embodiment of a kiln shelf element 50 according to the invention. The detail depicts the cross-section through an upper part 20, a lower part 30, and a carrier element 40 fixed therebetween. The upper part 20 is an upper part 20 as depicted in FIGS. 2 and 3, and the lower part 30 is a lower part 30 as depicted in FIGS. 6 and 7. The carrier element 40 fixed between the lower part 30 and the upper part 20 has a bore 41 that is widened towards the bottom 43 of the carrier element 40. The bore widening 42 corresponds to a negative surface structure analogous to the substantially dome-shaped top 37 of the disk-shaped attachment 34. The disk-shaped attachment 34 of the lower part 30 is, in sections, accommodated essentially flush in the bore widening 42 of the carrier element 40, i.e., it is countersunk in the carrier element 40, and the bottom 36 of the lower part 30 does not protrude from the bore 41 at the bottom 43 of the carrier element 40. The top 37 thus represents the support surface 35 for the carrier element 40 to be fixed. It can also be seen from FIG. 10 that the centering collar 29 of the upper part 20 is accommodated in the bore 41 of the carrier element 40 such that lateral slippage of the upper part 20 is prevented.
[0074] Both the upper part 20 and the lower part 30 of the support element 10 as well as the carrier element 40, implemented here as a simple firing batt, are made of highly temperature-resistant but also brittle ceramic material, such as silicon carbide or mullite. As can be seen in FIG. 10, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by an additional carrier element 40, support element 10, and items to be fired (not shown) resting thereon do not stress the stud 31, but are instead dissipated via the surfaces 26a, 25, 35, and 36 of the upper part 20 and of the lower part 30 of the support element 10 provided for this.
[0075] FIG. 11 depicts a detail of a cross-section of another embodiment of a kiln shelf element 50 according to the invention. The kiln shelf element 50, whose cross-section is depicted in detail in FIG. 11, differs from the kiln shelf element 50, whose cross-section is depicted in detail in FIG. 10, only in that the upper part 20 is the upper part 20 depicted in FIG. 4 and the kiln shelf element 50 additionally includes a tubular support 70, which is pushed over the upper part 20 and protrudes beyond the upper part 20. The inner diameter of the tubular support 70 essentially corresponds to the outer diameter of the upper part 20.
[0076] FIG. 12 depicts a side view of an embodiment of a kiln shelf 60 according to the invention. The kiln shelf 60 comprises two carrier elements 40, fixed in each case between the upper part 20 and the lower part 30 by two support elements 10. The upper parts 20 are upper parts 20 in accordance with the embodiment depicted in FIGS. 2 and 3. The lower parts 30 are implemented like the lower parts 30 in FIG. 6. The kiln shell 60 depicted in FIG. 12 thus includes two kiln shelf elements 50, as depicted in detail in the cross-section in FIG. 10.
[0077] FIG. 13 depicts a cross-section of a detail of the kiln shelf 60 of FIG. 12 along the section line A-A. As can be seen in FIG. 13, in the case of each of the support elements 10, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by additional carrier elements 40, support elements 10, and items to be fired (not shown) resting thereon do not stress the stud 31, but are instead dissipated via the surfaces 26a, 25, 35, and 36 of the upper part 20 and of the lower part 30 of the support element 10 provided for this. The bottom 36 of the lower part 30, which fixes the upper carrier element 40, rests, in the embodiment depicted in FIG. 13, on the circular ring surface 26a of the upper part 20, which fixes the lower carrier element 40.
[0078] FIG. 14 depicts the cross-section of a detail of another embodiment of a kiln shelf 60. The kiln shelf 60 comprises two carrier elements 40, fixed in each case between the upper part 20 and the lower part 30 by a support element 10. The upper parts 20 are upper parts 20 in accordance with the embodiment depicted in FIG. 1. The lower parts 30 are implemented like the lower parts 30 in FIG. 5. The kiln shelf 60 depicted in FIG. 14 thus includes two kiln shelf elements 50, as depicted in detail in cross-section in FIG. 9. As can be seen in FIG. 14, in the case of each of the support elements 10, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by additional carrier elements 40, support elements 10, and items to be fired (not shown) do not stress the stud 31, but are instead dissipated via the surfaces 26a, 25, 35, and 36 of the upper part 20 and of the lower part 30 of the support element 10 provided for this. The bottom 43 of the upper carrier element 40 rests, in the embodiment depicted in FIG. 14, in sections, on the circular ring surface 26a of the upper part 20, which fixes the lower carrier element 40. Alternatively, however, it is also possible to dimension the lower part 30 and the bore 41 with the bore widening 42 such that the bottom 36 of the lower part 30, which fixes the upper carrier element 40, rests on the circular ring surface 26a of the upper part 20, which fixes the lower carrier element 40.
[0079] FIG. 15 depicts the cross-section of a detail of another embodiment of a kiln shelf 60. The kiln shelf 60 comprises two carrier elements 40, fixed in each case between the upper part 20 and the lower part 30 by a support element 10. The upper parts 20 are upper parts 20 in accordance with the embodiment depicted in FIG. 4. The lower parts 30 are implemented like the lower part 30 in FIG. 5. The disk-shaped attachment 34 has a hexagonal recess 38 for a hex key. A tubular support 70 is pushed in each case over the upper parts 20. As can be seen in FIG. 15, in the case of each of the support elements 10, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by additional carrier elements 40, support elements 10, and items to be fired (not shown) do not stress the stud 31, but are instead dissipated via the surfaces 71, 25, 35, and 36 of the tubular support 71 and of the upper part 20 and of the lower part 30 of the support element 10 provided for this. The inner diameters of the tubular supports 70 essentially corresponds to the outer diameters of the upper parts 20. The bottom 43 of the upper carrier element 40 rests, in the embodiment depicted in FIG. 15, in sections on the circular ring surface 71 of the tubular support 70, which is pushed over the upper part 20, which fixes the lower carrier element 40. Alternatively, however, it is also possible to dimension the lower part 30 and the bore 41 with the bore widening 42 such that the bottom 36 of the lower part 30, which fixes the upper carrier element 40, rests on the circular ring surface 71 of the tubular support 70, which is pushed over the upper part 20, which fixes the lower carrier element 40.
[0080] FIG. 16 depicts a perspective view of an embodiment of a kiln shelf element 50 according to the invention. In this embodiment, the kiln shelf element 50 comprises a carrier element 40, that is fixed between the upper parts 20 and the lower parts 30 by three support elements 10. The upper parts 20 are implemented as depicted in the embodiment of FIG. 1.
[0081] FIG. 17 depicts a perspective bottom view of a detail of the kiln shelf element of FIG. 16. It can be seen in FIG. 17 that the bottom 36 of the lower part 30 does not protrude from the carrier element 40 at the bottom 43 of the carrier element 40.
[0082] FIG. 18 depicts a perspective view of an embodiment of a kiln shelf 60 according to the invention. The kiln shelf 60 depicted comprises two kiln shelf elements 50 arranged one above the other in accordance with the embodiment depicted in FIG. 16.
[0083] FIG. 19 depicts a perspective view of another embodiment of a kiln shelf 60 according to the invention. The kiln shelf 60 depicted comprises two carrier elements 40, which are in each case fixed in four support elements 10, with the support elements 10 comprising in each case an upper part 20 in accordance with the embodiment depicted in FIG. 4 with a tubular support 70 pushed over it and a lower part 30 in accordance with the embodiment depicted in FIG. 5.
[0084] FIG. 20 depicts a perspective bottom view of a detail of the kiln shelf of FIG. 19. It can be seen from FIG. 20 that the bottom 36 of the lower part 30 does not protrude from the carrier element 40 at the bottom 43 of the carrier element 40. In addition, it is discernible in FIG. 20 that the lower part 30 has a hexagonal recess 38 for a hex key on the bottom 36.
[0085] When assembling a kiln shelf composed of support elements 10 and carrier elements 40 according to the invention, as depicted, for example, in FIG. 18, the upper part 20 and the lower part 30 of each support element 10 are preferably connected to one another as follows:
[0086] First, the upper part 20 is placed on the shelf 40 to be fixed between the upper part 20 and the lower part 30 such that the bottom opening 21 of the upper part 20 is aligned with a corresponding bore 41 in the carrier element 40. Then, the lower part 30 of the support element 10 is guided through the bore 41 and screwed with its external thread 32 into the corresponding internal thread 22 in the opening 21 of the upper part 20, establishing a rotary connection between the upper part 20 and the lower part 30. The screwing can be done manually or by machine. According to the invention, the stud 31 is now screwed further into the opening 21 of the upper part 20, until the rotary connection is released, such that the stud 31 can no longer be pulled downward out of the opening 21, is thus locked therein, and is, at the same time, locked with axial play in the opening 21. The upper part 20, the lower part 30, and the bore 41, together with the bore widening 42 of the carrier element 40, are dimensioned such that when the rotary connection is again released, the disk-shaped attachment 34 of the lower part is accommodated in the bore widening 41 essentially flush such that the bottom 36 of the lower part 30 does not protrude from the bottom 43 of the carrier element 40.
[0087] When assembling a kiln shelf as depicted in FIG. 19, a tubular support is pushed over the upper part of each support element after the steps described above.
[0088] FIG. 21 depicts a perspective view of an embodiment of an upper part 20 of a support element 10 according to the invention. The upper part 20 depicted in FIG. 21 is implemented as a hollow body. In this embodiment, the through-opening 21 has four slot-shaped guides 81. In the embodiment depicted in FIG. 21, the section with the four slot-shaped guides 81 is not arranged directly adjacent the bottom 28 of the upper part 20. However, it is also possible for it to be arranged directly adjacent the bottom 28. Viewed from the bottom 28 of the upper part 20, the opening 21 has, behind the section with the four slot-shaped guides 81, a region with an enlarged diameter (undercut) 23 (not shown in FIG. 21). In the embodiment depicted in FIG. 21, the upper part 20 has, at its lower end, a widened edge region 24 with a bottom seating surface 25, which is suitable for resting solidly on a shelf 40 to be fixed between an upper part 20 and a einem part 30. Finally, the upper part 20 also includes a top circular ring surface 26a, on which, in the assembled state of a kiln shelf, the lower part 30 of the next higher support element 10 can be arranged. In the embodiment depicted in FIG. 21, the circular ring surface 26a is widened at the top 26 of the upper part 20 compared to the cylindrical middle section of the upper part 20.
[0089] FIG. 22 depicts a perspective view of a detail of the upper part of FIG. 21.
[0090] FIG. 23 depicts a cross-section of the upper part 20 of FIG. 21 along a central section line from the top 26 to the bottom 28. It can be seen from FIG. 23 that the opening 21 has, viewed from the bottom 28 of the upper part 20, a region with an enlarged diameter (undercut) 23 behind the section with the four slot-shaped guides 81. In the embodiment depicted in FIG. 23, the section with the four slot-shaped guides 81 is not arranged directly adjacent the bottom 28 of the upper part 20. However, it is also possible for it to be arranged directly adjacent the bottom 28.
[0091] FIG. 24 depicts a perspective view of an embodiment of a lower part 30 of a support element 10 according to the invention. The lower part 30 comprises a centrally arranged stud 31 and a disk-shaped attachment 34, whose layer thickness decreases toward the edge. In the embodiment depicted in FIG. 24, the bottom 36 of the disk-shaped attachment is planar and its top 37 is conical up to the stud 31. The stud 31 has protrusions 82 directly adjacent its free end. The protrusions 82 are implemented such that they can be inserted into the slot-shaped guides 81 of the upper part 20 depicted in FIG. 21 through 23. Below the section with the protrusions 82, the stud 31 has an undercut 33 with a reduced diameter compared to the section with the protrusions 82. In addition, it can be discerned in FIG. 24 that in the embodiment depicted in FIG. 24, the lower part 30 has a hexagonal recess 38 for a hex key on the bottom 36.
[0092] FIG. 25 depicts the cross-section of a detail of an embodiment of a kiln shelf 60. The kiln shelf 60, of which the cross-section of a detail is depicted in the figure, comprises two carrier elements 40, fixed in each case between the upper part 20 and the lower part 30 by a support element 10. The upper parts 20 are upper parts 20 in accordance with the embodiment depicted in FIG. 21 through 23. The lower parts 30 are implemented like the lower part 30 in FIG. 24. The carrier element 40 fixed between the lower part 30 and the upper part 20 has a bore 41 that is widened toward the bottom 43 of the carrier element 40. The bore widening 42 corresponds to a negative surface structure analogous to the conical top 37 of the disk-shaped attachment 34. The disk-shaped attachment 34 of the lower part 30 is, in sections, accommodated essentially flush in the bore widening 42 of the carrier element 40, i.e., it is countersunk in the carrier element 40, and the bottom 36 of the lower part 30 does not protrude from the bore 41 at the bottom 43 of the carrier element 40. In the embodiment depicted in FIG. 25, the disk-shaped attachment 34 has a hexagonal recess for a hex key. As can be seen in FIG. 25, with each of the support elements 10, the stud 31 of the lower part 30 is locked in the opening 21 of the upper part 20 with axial play in accordance with the invention such that weight forces caused on the upper part 20 by additional carrier elements 40, support elements 10, and items to be fired (not shown) do not stress the stud 31, but are instead dissipated via the surfaces 26a, 25, 35, and 36 of the upper part 20 and of the lower part 30 of the support element 10. The bottom 43 of the upper carrier element 40, rests, in the embodiment depicted in FIG. 25, in sections, on the circular ring surface 26a of the upper part 20, which fixes the lower carrier element 40 (outside the detail depicted in FIG. 25). Alternatively, however, it is also possible to dimension the lower part 30 and the bore 41 with the bore widening 42 such that the bottom 36 of the lower part 30, which fixes the upper carrier element 40, rests on the circular ring surface 26a of the upper part 20, which fixes the lower carrier element 40.
[0093] FIG. 26 depicts a perspective view of another embodiment of a lower part 30 of a support element 10 according to the invention. The embodiment depicted in FIG. 26 differs from the embodiment of a lower part depicted in FIG. 5 only in that the stud 31 has a flattened region 39 in the region of the external thread 32 on two sides opposite one another. The thread is, so to speak, cut off in this region. The flattened regions 39 extend parallel to the direction of extension E of the stud 31 and extend over the complete length of the external thread 32 in the embodiment depicted in FIG. 26.
LIST OF REFERENCE CHARACTERS
[0094] 10 multi-part support element [0095] 20 upper part [0096] 21 opening [0097] 22 internal thread [0098] 23 undercut, region with an enlarged diameter [0099] 24 widened edge region [0100] 25 seating surface [0101] 26 top [0102] 26a circular ring surface [0103] 27 internal cylindrical surface [0104] 28 bottom [0105] 29 centering collar [0106] 30 lower part [0107] 31 stud [0108] 32 external thread [0109] 33 undercut, region with reduced diameter [0110] 34 disk-shaped attachment [0111] 35 support surface [0112] 36 bottom [0113] 37 top [0114] 38 recess [0115] 39 flattened region [0116] 40 carrier element [0117] 41 bore [0118] 42 bore widening [0119] 43 bottom of the carrier element [0120] 50 kiln shelf element [0121] 60 kiln shelf [0122] 70 tubular support [0123] 71 circular ring surface of the tubular support [0124] 81 slot-shaped guide [0125] 82 protrusion [0126] E direction of extension
