A stackable foundation spacer is adapted for automated distribution. The foundation spacer includes a lower bearing surface adapted to be placed on a foundation support surface for the concrete, a first support surface adapted to support the reinforcement grid in a plurality of support points, and a
A stackable foundation spacer is adapted for automated distribution. The foundation spacer includes a lower bearing surface adapted to be placed on a foundation support surface for the concrete, a first support surface adapted to support the reinforcement grid in a plurality of support points, and an outer circumferential side wall connecting the lower bearing surface with the first support surface. The outer circumferential side wall is inclined outwards from the lower bearing surface to the first support surface with an angle α, and the shape of the first support surface is larger than a mesh in the reinforcement grid that is to be supported. Distribution of foundation spacers can be automated by using a hand-held or automatic feeder device. Further, a reinforcement grid can be supported by a foundation spacer regardless of the position of the spacer.
대표청구항▼
1. Stackable foundation spacer adapted for distribution using a feeder device, the foundation spacer comprising: a lower bearing surface adapted to face a foundation support surface for a concrete structure when the spacer is placed over the foundation support surface,a first support surface facing
1. Stackable foundation spacer adapted for distribution using a feeder device, the foundation spacer comprising: a lower bearing surface adapted to face a foundation support surface for a concrete structure when the spacer is placed over the foundation support surface,a first support surface facing a way from the lower bearing surface and adapted to provide support for a reinforcement grid at a plurality of contact positions when the reinforcement grid is placed over the foundation spacer, andan outer circumferential side wall interposed between the lower bearing surface and the first support surface,wherein the outer circumferential side wall extends outwards from the lower bearing surface when viewed in a direction perpendicular to the lower bearing surface and is inclined with an angle α to the direction, such that the foundation spacer provides a space surrounded by the outer circumferential side wall when viewed from the direction, and configured to receive at least part of outer circumferential side wall of another foundation spacer for stacking foundation spacers, andwherein the foundation spacer comprises a central hole, wherein the foundation spacer further comprises a second support surface adapted to support the reinforcement grid, and an inner side wall connecting the lower bearing surface with the second support surface wherein the inner side wall is inclined inwards from the lower bearing surface to the second support surface with an angle β. 2. Stackable foundation spacer according to claim 1, wherein the outer circumferential sidewall of the foundation spacer comprises three semi-circular parts having a dividing angle between each pall of 120 degrees. 3. Stackable foundation spacer according to claim 1, wherein the first support surface comprises an outwardly extending outer rim. 4. Stackable foundation spacer according to claim 1, wherein the second support surface comprises an inwardly extending inner rim. 5. Stackable foundation spacer according to claim 1, wherein the foundation spacer comprises at least one intermediate wall that interconnects the outer side wall with the inner side wall. 6. Stackable foundation spacer according to claim 1, wherein the foundation spacer comprises a plurality of ridges on the inner side of the outer and/or inner side wall adapted to support the bearing surface of another foundation spacer when several foundation spacers are stacked. 7. Feeder device supporting a plurality of stackable foundation spacers according to claim 1 and adapted to distribute the stackable foundation spacers, wherein the feeder device comprises a body for supporting the plurality of stackable foundation spacers through a central hole of the foundation spacers, a release mechanism for releasing one reinforcement spacer at the time and a handle for holding the feeder device. 8. Feeder device according to claim 7, wherein the feeder device comprises a release grip for operating the release mechanism by hand. 9. Feeder device according to claim 7, wherein the release mechanism is spring-loaded and that the release mechanism is operated by pulling the handle upwards in order to overcome the force of the spring force of the release mechanism. 10. Feeder device according to claim 7, wherein the body is a longitudinal rod. 11. Feeder device according to claim 10, wherein the outer shape of the body is circular. 12. Feeder device according to claim 7, wherein the release mechanism is provided with a first release means at a first position and a second release means at a second position. 13. Feeder device according to claim 12, wherein the first release means is adapted to protrude outwards such that it will hold a single spacer and the second release means is adapted to protrude such that it will hold all spacers but one when the release mechanism is in a hold position. 14. Feeder device according to claim 12, wherein the first release means is adapted to protrude outwards such that it will hold all spacer and the second release means is adapted to be retracted when the release mechanism is in a hold position. 15. Feeder device according to claim 12, wherein the distance between the first position and the second position corresponds to the distance between two stacked spacers. 16. Feeder device according to claim 12, wherein the release mechanism is arranged to first retract the first release means such that one spacer is released from the first position, to protrude the first release means and then to retract the second release means such that one spacer is released from the second position to the first position when the release mechanism is operated to release a spacer. 17. Feeder device according claim 12, wherein the release mechanism is arranged to first protrude the second release means such that it will hold all spacers but one at the second position and then to retract the first release means such that a single spacer is released from the first position when the release mechanism is operated to release a spacer. 18. Feeder device according to claim 12, wherein each release means protrudes outwards from the body when a release means holds a spacer. 19. Feeder device according to claim 12, wherein the feeder mechanism is provided with a feed-in position in which both release means are adapted to retract such that they are aligned with the body at the same time.
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