Abstract
It is disclosed an adapter frame (11) for use when installing or renovating a basin in relation to a surface, the basin including a basin body (11) with basin top (2), basin frame (7) and basin cover (9). The adapter frame (11) includes a skirt (111) with an inward facing flange (112) attached to an upper part of the skirt, an inner dimension of the flange (112) being larger than a corresponding outer dimension of the basin frame (7) and an inner dimension of at least a lower part of the skirt (111) being larger than a corresponding outer dimension of the basin top (2). The adapter frame further includes a broad outward facing flange foot (114) attached to a lower part of the skirt (111).
Claims
1. An adapter frame for use when installing or renovating a basin, the basin including a basin body buried in the ground, with a basin top, a basin frame adapted to be on level with a top coating covering the ground, the basin frame being of the floating type and holding a basin cover, wherein the adapter frame is placed between the basin body and the basin frame preventing the basin frame from being attached to the basin body, the adapter frame forming a void between the basin top and the adapter frame, wherein the adapter frame includes a skirt with an inward facing flange attached to an upper part of the skirt, the flange fitting around the circumference of the basin frame and an inner dimension of at least a lower part of the skirt being larger than a corresponding outer dimension of the basin top, characterized in an outward facing flange foot attached to a lower part of the skirt, the flange foot resting on masses outside the basin body transferring forces from the basin frame to the masses outside the basin body.
2. An adapter frame according to claim 1, further including a gasket attached to an inner circumference of the flange.
3. An adapter frame according to claim 1, wherein the flange foot projects perpendicular from the skirt.
4. An adapter frame according to claim 1, wherein the flange foot is inclined relative the skirt, and is provided with ribs.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Subsequently, the invention will be described in detail in reference to the appended drawings, in which:
[0016] FIG. 1 shows a prior art basin, wherein the height of the basin frame should be adjusted,
[0017] FIG. 2 illustrates a first step in renovating the basin,
[0018] FIG. 3 shows the next step, with the installation of a device according to the invention,
[0019] FIG. 4 shows the final step when reinstalling the basin frame at correct height,
[0020] FIG. 5a-b shows possible embodiments of a device according to the invention.
DETAILED DESCRIPTION
[0021] FIG. 1 shows a basin with a body 1 and top 2, which is installed in the ground. Above the ground 3, a layer of draining gravel 4 is filled. Onto the gravel 4 a road with layers of asphalt 5 and substrate 6 is established. A basin frame 7 with flange 8 and cover 9 is running through the upper layers 5 and 6. The basin frame is fastened to the upper layers, but is intended to slide freely inside the basin body 1, i.e. the basin frame is of the floating variety. This will not always work as intended. In case the road surface is lifted, e.g. due to frost, a void will be created (above the basin top/basin body which is lying on ground without frost), whereupon the load on the frame (from traffic) will press the basin frame into the void and thus create unevenness between the road surface and basin frame. In this case, the basin frame has sunk and has to be elevated to come into a correct level relative to the road surface 10. Masses may also enter the void adjacent to the basin frame and thus avoiding sagging. In this way the frame will project above the road surface when the ground frost is thawing.
[0022] FIG. 2 shows the same basin. The basin frame is now removed and cleaned from old asphalt and rust. The edge of the opening in the road surface is aligned and prepared for installation of the adapter frame 11 and reinstallation of the basin frame.
[0023] FIG. 3 shows that a device, an adapter frame 11 is lowered in the opening. The adapter frame 11 rests on the gravel outside the basin body.
[0024] In FIG. 4 the basin frame is lowered into the opening and adjusted into a correct level relative to the road surface. A dedicated tool or machinery is used for this task (not shown). The position of the basin frame in the basin body is controlled by the adapter frame 11. Tarmac mass 5 is laid into the cavity outside the basin ring, while the basin frame is being held at the correct level. The adapter frame will prevent the asphalt mass from contacting the lower parts of the frame, thus preventing the mass from adhering to the frame in the area where it enters the basin body. An important difference from prior art techniques is that the basin frame no longer transfers the load from above via the asphalt mass down to the basin top, but that the forces applied to the basin frame instead are transferred via the asphalt mass to the adapter frame, and from there to the gravel outside the basin body. The void between the basin top and the adapter frame will absorb possible movements between the basin frame and top.
[0025] FIG. 5a shows a possible embodiment of the adapter frame 11. The adapter frame includes a skirt 111, an inward facing flange 112 which is attached to an upper end of the skirt 111, an optional gasket 113 attached to the inner circumference of the flange 112, and an outward facing flange foot 114 attached to the lower part of the skirt 111. The gasket may be loose and only pressed onto the flange 112. The object of the gasket is to prevent asphalt from protruding between the basin frame and adapter frame into the cavity inside the adapter frame. The adapter frame must be dimensioned such that it will lie external to or outside the basin top, the flange foot resting on the masses outside the basin top. The adapter frame may be cylindrical in shape and may be produced in dimensions fitting standard basins, i.e. the adapter frame fitting tightly around the circumference of the basin top. The adapter frame may be assembled from several parts or cast in one piece. The adapter frame may also be without any gasket, in case it fits tightly enough around the basin body.
[0026] FIG. 5b shows another embodiment of the adapter frame, where flange-foot is fully or partially inclined relative to the skirt in order to provide a larger support surface. The adapter frame is exposed to large loads, and may therefore be provided with reinforcements in the form of ribs 115 on the inside.
[0027] The adapter frame may be of miscellaneous shapes, i.e. shaped as a circular ring, or a square or rectangular ring, or any other shape fitting the appearance of the basin top and frame.
