Abstract
An injector for filling an annular space formed around an anchor bolt includes a piston disk which has a through-opening for the anchor bolt and a quantity of curable compound mounted upstream of the piston disk, where the piston disk forms a piston for forcing at least some of the quantity of curable compound into the annular space.
Claims
1.-12. (canceled)
13. An injector for filling an annular space formed around an anchor bolt, comprising: a piston disk, wherein the piston disk has a through-opening and wherein the anchor bolt is passable through the through-opening; and a quantity of a curable compound upstream from the piston disk, wherein the piston disk forms a piston for squeezing at least a portion of the quantity of the curable compound into the annular space.
14. The injector according to claim 13, wherein the quantity of the curable compound is disposed in a reservoir.
15. The injector according to claim 13 further comprising sealing washer, wherein the quantity of the curable compound is disposed at least partially between the piston disk and the sealing washer.
16. The injector according to claim 13 further comprising a sealing sleeve, wherein the quantity of the curable compound is disposed at least partially inside the sealing sleeve.
17. The injector according to claim 16, wherein the piston disk is disposed in an axially displaceable manner inside the sealing sleeve or wherein the sealing sleeve is attached to the piston disk.
18. The injector according to claim 13 further comprising mixing elements which protrude toward the quantity of the curable compound.
19. The injector according to claim 18 further comprising recesses for accommodating at least a portion of the mixing elements when squeezing at least a portion of the quantity of the curable compound by the piston disk.
20. The injector according to claim 13, wherein the piston disk is concave at least regionally on a side facing toward the quantity of the curable compound.
21. A fastening arrangement, comprising: the injector according to claim 13; and an anchor with an anchor bolt, wherein the anchor bolt passes through the through-opening of the injector.
22. A container comprising the injector according to claim 13 and an anchor.
23. A method for installing an anchor having an anchor bolt, comprising the steps of: disposing the anchor bolt of the anchor in a hole; and introducing the curable compound into an annular space surrounding the anchor bolt in the hole by the injector according to claim 13.
24. The method according to claim 23, wherein the piston disk of the injector is pressed to a surface by tightening an anchor nut disposed on the anchor bolt and wherein the curable compound is squeezed using the piston disk.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0041] FIG. 1: A longitudinal sectional view of a fastening arrangement according to the invention with an injector according to the invention and an anchor, wherein the anchor bolt of the anchor is arranged in a hole, which extends through a base plate into a substrate;
[0042] FIG. 2: A view from below of the piston disk of the injector from FIG. 1;
[0043] FIG. 3: A magnified view of the injector from FIG. 1 in a longitudinal sectional. view, i.e. according to section A-A of FIG. 2;
[0044] FIG. 4: A view from below of the piston disk of the injector according to a second embodiment;
[0045] FIG. 5: The injector of the second embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 4;
[0046] FIG. 6: A transparent view from above of an injector according to a third embodiment;
[0047] FIG. 7: The injector of the third embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 6;
[0048] FIG. 8: The piston disk of the injector of the third embodiment from below;
[0049] FIG. 9: The piston disk of the injector of the third embodiment in a longitudinal sectional view. i.e., according to section A-A of FIG. 8;
[0050] FIG. 10: The sealing washer of the injector of the third embodiment from above;
[0051] FIG. 11: The sealing washer of the injector of the third embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 10;
[0052] FIG. 12: A view from above of an injector according to a fourth embodiment;
[0053] FIG. 13: The injector of the fourth embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 12;
[0054] FIG. 14: The piston disk of the injector of the fourth embodiment from below;
[0055] FIG. 15: The piston disk of the injector of the fourth embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 14;
[0056] FIG. 16: The sealing disk of the injector of the fourth embodiment from above;
[0057] FIG. 17: The sealing disk of the injector of the fourth embodiment in a longitudinal sectional view, i.e., according to section A-A of FIG. 16; and
[0058] FIG. 18: A view corresponding to FIG. 1 with additional arrows to explain the method according to the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
[0059] Elements essentially acting the same are labeled with the same reference signs in the various embodiments.
[0060] A first embodiment of a fastening arrangement is shown in FIGS. 1 to 3. The fastening arrangement has an anchor 1 with an anchor bolt 10 as well as an injector 3
[0061] In the front region of anchor 1, anchor 1 has an anchoring zone 12, in which anchor boll 10 can be anchored to wall 98 of a hole 99. In FIG. 1, anchor 1 is illustratively depicted as a bolt-type expansion anchor. As such, anchor 1 has in anchoring zone 12 an expansion sleeve and an expansion cone formed on anchor bolt 10 for radially pressing the expansion sleeve against wall 98 of hole 99, given a tension load in anchor bolt 10. However, the design of anchor 1 as a bolt-type expansion anchor should be regarded as merely illustrative, and anchor 1 can also have anchoring zones 12 that act in other ways. Preferably, anchoring zone 12 is a mechanical anchoring zone, in other words an anchoring zone which effects at least primarily a form-locking or friction-locking anchoring. Basically however, anchoring zone 12 could also be a chemical anchoring zone, in other words an anchoring zone which effects an at least primarily material-bonded anchoring.
[0062] In the rear region of anchor 1, anchor bolt 10 is equipped with an exterior thread 18. Screwed on to the exterior thread is an anchor nut 8 with an interior thread corresponding to exterior thread 18.
[0063] The fastening arrangement also has an injector 3 explained in detail below, wherein anchor bolt 10 of anchor 1 passes through injector 3.
[0064] FIG. 1 depicts the fastening arrangement when installing anchor 1. Accordingly, the front end of anchor bolt 10 of anchor 1 is guided into a hole 99 in a base plate 6 and a substrate 5, for example a concrete substrate, adjoining base plate 6. Injector 3 surrounding anchor bolt 10 is located between anchor nut 8 and base plate 6 abutting substrate 5, and thus also between anchor nut 8 and substrate 5. In hole 99, an annular space 97 is formed around anchor bolt 10 which extends from base plate 6 into substrate 5.
[0065] Injector 3 of the embodiment of FIGS. 1 to 3 has a metallic piston disk 31 with a through-opening 41, through which anchor bolt 10 passes. Upstream from piston disk 31 is a reservoir 33, for example a foil pouch, which contains a quantity 30 of a curable compound, Reservoir 33 is designed in a ring-shaped manner and surrounds anchor bolt 10. Upstream from reservoir 33 is a sealing washer 51, which also has a through-opening 61, through which anchor bolt 10 passes. Reservoir 33 is thus located between piston disk 31 and sealing washer 51, wherein piston disk 31 of anchor nut 8 and sealing washer 51 faces substrate 5 and base plate 6. Sealing washer 51 has on its exterior side facing away from piston disk 31, i.e., on its exterior side facing away from quantity 30 of the curable compound, a sealing lip 55.
[0066] In FIG. 18, the operating mode of injector 3 of the embodiment of FIGS. 1 to 3 is indicated in a method according to the invention by means of arrows. As FIG. 18 shows, anchor nut 8 is tightened using exterior thread 18 of anchor bolt 10. Since anchor bolt 10 anchors itself at its anchoring zone 12 in substrate 5, anchor nut 8 hereby comes closer to substrate 5. Since anchor nut 8 is cross-sectionally larger than through-opening 41 in piston disk 31, piston disk 31 is hereby carried along by anchor nut 8. Consequently, injector 3 is pressed together between anchor nut 8 on the one hand and substrate 5 and possibly base plate 6, which form a counter-bearing for injector 3, on the other, and piston disk 31 is pressed against sealing washer 51. Reservoir 33, containing quantity 30 of the curable compound, is hereby pressed out, and the curable compound goes out of injector 3 into annular space 97 around anchor bolt 10, where the compound ultimately cures, i.e. becomes rigid, in other words, the curable compound between piston disk 31 acting as a piston and base plate 6 is squeezed out. of injector 3 into annular space 97 around anchor bolt 10.
[0067] As particularly FIGS. 2 and 3 show, piston disk 31 of injector 3 of the embodiment of FIGS. 1 to 3 has mixing elements 37 and 37, which project toward quantity 30 of the curable compound. particularly toward reservoir 33, from piston disk 31. Mixing elements 37 arc pin-shaped and mixing elements 37 are crescent-shaped. Mixing elements 37 and 37 together form a complex geometry, which ensures good mixing of the curable compound both in the pure translational motion of piston disk 31 and sealing washer 51 toward each other as well as in a purely relative rotation of piston disk 31 and sealing disk 51 toward each other without a translational motion.
[0068] Through-opening 41, provided for passing through anchor bolt 10, in piston disk 31 can he designed in a circular manner, for example. As shown in FIG. 3 in particular, through-opening 61 of sealing washer 51 conversely has a cross-sectional shape differing from a circular form. so that mixing lobes for the curable compound are formed at through-opening 61 of sealing washer 51.
[0069] As FIGS. 1 and 3 show in particular, injector 3 of the embodiment of FIGS. 1 to 3 has a sealing sleeve 59, in which piston disk 31 is displaceably arranged, and which seals off injector 3, particularly its reservoir 33, in a radial direction. In the embodiment of FIGS. 1 to 3, the preferably cylindrical sealing sleeve 59 is arranged securely on sealing washer 51 and in particular designed integrally with sealing washer 51. Basically however, sealing sleeve 59 and sealing washer 51 can also be separate parts. For a particularly good sealing effect, sealing washer 51 and/or sealing sleeve 59 in particular can consist of a plastic material.
[0070] FIGS. 4 and 5 depict an alternative embodiment of an injector 3. Injector 3 of FIGS. 4 and 5 can be used in the fastening arrangement of FIGS. 1 to 3 and in the method shown in FIG. 18 instead of the injector 3 respectively shown there.
[0071] Injector 3 of the embodiment of FIGS. 4 and 5 implements a series of features of injector 3 of the embodiment of FIGS. 1 to 3 in a similar manner, so that the aforementioned description can be applied similarly to that extent.
[0072] However, in particular, injector 3 of the embodiment of FIGS. 4 and 5 differs from injector 3 of the embodiment of FIGS. 1 to 3 by the design of mixing elements 37 at piston disk 31: In the embodiment of FIGS. 4 and 5, piston disk 31 has wedge-shaped mixing elements 37, which broaden radially outward. In the longitudinal sectional view (FIG. 5), piston disk 31 is constructed concavely on its side facing quantity 30 of the curable compound.
[0073] Furthermore, injector 3 of the embodiment of FIGS. 4 and 5 differs from injector 3 of the embodiment of FIGS. 1 to 3 by the design of through-opening 61 in sealing washer 51: Through-opening 61 in sealing washer 51 of the embodiment of FIGS. 4 and 5 is designed essentially circularly in its cross-section.
[0074] Sealing washer 51 of the embodiment of FIGS. 4 and 5 once again has a sealing sleeve 59, which prevents the curable compound from being pressed away radially and which instead ensures that the curable compound is primarily pressed into the center of injector 3 and. thus into hole 99 and into annular space 97. Sealing washer 51 of the embodiment of FIGS. 4 and 5 once again also has on its exterior side facing away from piston disk 31, i.e., on its exterior side facing away from quantity 30 of the curable compound, a sealing lip 55, which abuts the surface of base plate 6 when the injector is in operation.
[0075] FIGS. 6 to 11 show a third alternative embodiment of an injector 3. Injector 3 of FIGS. 6 to 11 can be used in the fastening arrangement of FIGS. 1 to 3 and in the method shown in FIG. 18 instead of the injector 3 respectively shown there.
[0076] Injector 3 of FIGS. 6 to 11 once again has a piston disk 31 with a through-opening 41 for anchor bolt 10 as well as a sealing washer 51 with a through-opening 61 for anchor bolt 10, wherein the two through-openings 41 and 61 are aligned with each other, and wherein between piston disk 31 and sealing washer 51, there is arranged a reservoir 33 with a quantity 30 of a curable compound. For the sake of simplicity, reservoir 33 is depicted with quantity 30 of the curable compound only in FIG. 9.
[0077] Regarding the embodiment of FIGS. 6 to 11, both piston disk 31 as well as sealing washer 51 are formed from a metal material. Once again, pin-shaped mixing elements 57 are provided, wherein these are arranged on sealing washer 51 in the embodiment of FIGS. 6 to 11. Piston disk 31 has recesses 38, ring-shaped here for illustrative purposes, for accommodating mixing elements 57. Additionally or alternatively, recesses corresponding to the mixing elements on piston disk 31 can also be arranged on the piston disk 31 mixing elements and preferably on sealing washer 51.
[0078] Regarding the embodiment of FIGS. 6 to 11, a sealing sleeve 39 is provided once again, which seals injector 3 in a radial direction. However, in contrast to the two previously described embodiments, sealing sleeve 39 according to the embodiment of FIGS. 6 to 11 is arranged in an axially fixed manner to piston disk 31 and preferably constructed integrally with piston disk 31. Sealing disk 51 of the embodiment of FIGS. 6 to 11 is accordingly arranged in an axially displaceable manner inside sealing sleeve 39.
[0079] Regarding the embodiment of FIGS. 6 to 11, both piston disk 31 as well as sealing washer 51 are designed concave on the interior sides respectively facing quantity 30 of the curable compound.
[0080] FIGS. 12 to 17 show a fourth alternative embodiment of an injector 3. Injector 3 of FIGS. 12 to 17 can be used in the fastening arrangement of FIGS. 1 to 3 and the method. shown in FIG. 18 instead of the injector 3 respectively shown there.
[0081] Injector 3 of FIGS. 12 to 17 once again has a piston disk 31 with a through-opening 41 for anchor bolt 10 as well as a sealing disk 51 with a through-opening 61 for anchor bolt 10, wherein the two through-openings 41 and 61 align with each other, and wherein between piston disk 31 and sealing washer 51, a reservoir 33 with a quantity 30 of a curable compound is arranged. For the sake of simplicity, reservoir 33 is depicted with quantity 30 of the curable compound only in FIG. 13.
[0082] Regarding the embodiment of FIGS. 12 to 17, both piston disk 31 as well as sealing washer 51 are formed of a metal material. Once again, mixing elements 57 are provided on sealing washer 51, wherein these mixing elements 57 are designed having a circular arc shape in the embodiment of FIGS. 12 to 17.
[0083] In the embodiment of FIGS. 12 to 17, two sealing sleeves 39 and 59 are provided, which seal off injector 3 in a radial direction, namely a first sealing sleeve 39, which is arranged in an axially secure manner to piston disk 31 and preferably constructed integrally with piston disk 31, and a second sealing sleeve 59, which is arranged in an axially secure manner to piston disk 51 and preferably constructed integrally with piston disk 51. Sealing sleeve 39 is thereby designed with a smaller diameter than sealing sleeve 59, and piston disk 31 with sealing sleeve 39 is arranged in an axially displaceable manner inside sealing sleeve 59 of sealing washer 51.
