FI82509B - Element for preventing movement of loose earth material or the like - Google Patents

Abstract

Element for preventing movement of loose earth material or the like. The element comprises multiple compartments 2 and a framework formed from the walls 1 between the compartments. The walls 1 are hollow and open at one edge. The outer surfaces of the walls are slanting in relation to the plane of the framework in such a way that the internal cavities of the walls widen out towards the open edge of the walls. At the outermost walls 1 the element has locking members 5, 6, it being possible to locate the locking members in parallel elements inside one another. <IMAGE>

Description

1 82509

The present invention relates to an element for preventing the movement of loose soil or the like, which element comprises a plurality of compartments and a frame formed by the walls between the compartments, the walls being hollow and open at one edge, and the outer surfaces of the walls being inclined with respect to the plane of the frame so that the cavities inside the walls extend towards the open edge of the walls, and the element-10 has locking members in the outermost walls, the locking members of the two parallel elements being nested and the inner part the outer part is formed by a recess in the inner cavity of the wall.

It is known to use various frame structures on embankments made along roads and ditches, where lawns are grown, to prevent soil from flowing down a sloping slope. Finnish patent publication 67112 contains pictures of 20 lightweight, hollow-walled elements. Such an element is preferably made of plastic, making it very lightweight and easy to handle. Since the walls of the frame are hollow and their outer surfaces are chamfered, even relatively high-walled elements can be stacked on top of each other so that their walls intersect. In this case, the elements require very little space for storage and transport. Made of plastic, the elements are easy to cut and saw into pieces of the desired size. The bottoms of the element trays can be either open or closed-30 females. When the elements are used to hold the growth medium in place, they can be attached to the ground with iron, 50-60 cm long, hook-tipped rods.

When the compartments of the element are provided with bottoms, they can be used on inclined surfaces of the effluent clarification basin and at the bottom of the basin to hold sand and gravel or other media suitable for catching, collecting and filtering debris and filling the compartments between the walls. In this case, however, 2 82509 cannot be used to hold the fasteners in place because the compartments are closed and because under the elements comes a waterproof, strong plastic film for the entire length of the basin, which must not be punctured.

The object of the present invention is to provide a plate element which remains in place without hitting the ground fastening hooks. The element according to the invention is characterized in that the pair of locking members have mating surfaces which are approximately perpendicular to the side surface of the wall between the compartments. These locking members have the required number, preferably on all four sides of the plate. The locking elements on the two opposite sides are dimensioned so that the smaller members on the other side fit inside the larger members at corresponding points of the element 15 to be fitted in parallel.

The locking devices make the plates hold together. The wall formed by several elements is locked to the ground so that only rods that can be pushed into the ground are used at the top of the uppermost elements.

20 When the trays are provided with bottoms, the elements can be easily made of a uniform plastic sheet by the vacuum method. The design of the locking members of the elements according to the invention can also be easily carried out by this method. The invention and its details will be described in more detail below with reference to the accompanying drawings, in which Fig. 1 shows an element according to the invention seen from above, Fig. 2 shows section AA from Fig. 1, Fig. 3 shows an element seen from the front, Fig. 4 shows section BB from Fig. 1, Fig. 5 shows a sectional view of the B-B 'of Figure 1, Figure 6 shows a detail of the wall of the compartment, as seen in Figure 1 in the direction of arrow C, 1' Figure 7 shows a similar detail of the direction of arrow D direction 35, and Figure 8 shows an enlarged detail of Figure 4.

: The frame of the element consists of walls 1 with open trays 2 between them. The bottoms of the trays are

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3 82509 closed. In the embodiment shown in the figures, the trays are in the shape of an open letter Z. The bottoms of the trays are stiffened by transverse ribs 3 connecting the lower parts of the two opposite side walls 1 of each tray to each other.

Walls 1 are hollow and open below. Their surfaces are sloping so that the cavity inside them widens towards the bottom. The ribs 3 are also hollow and open below.

The elements according to the invention can be made of plastic.

The walls 1 are e.g. about 10-12 cm high. For different applications, they can be lower, e.g. about 5 cm high. The surface of the hollow walls can only be a layer of plastic about 2-2.5 mm thick. Several elements can be stacked on top of each other so that the walls 1 intersect, whereby the elements go into a very small space. Admittedly, the locking members cause the plates to require somewhat more space than the corresponding plates without locking members.

The uppermost elements are fastened to the slope with fit-20 wool fastening pins. The lower elements are arranged below the upper elements so that the side walls of the upper and lower edges overlap and the elements are locked together by locking members. In this way, several elements are arranged in succession into a continuous network structure. Parallel elements 25 can also be joined together by fitting the outermost side walls on top of each other and locking them together. The two interconnected outermost side walls 1 'and 1 *' are provided with openings 4. The walls of the adjacent element which pass from the outermost walls arranged inside the walls 30 1 'and 11' are suitable for passing through these openings. Sand or crushed stone or other material suitable for the infection, collection and filtration of loose debris is placed in Lo 2. This material remains well in place supported by the walls 1.

The locking members have inner parts 5 and outer parts 6. For example, in Fig. 1, the upper parts 5 of Si-35 have the necessary number at the top edge and the right side edge of the element. Correspondingly, the outer parts 6 are at the lower edge and on the left side edge of the element. The pairs of locking members of the two parallel elements are nested to bind the elements together. More suitably, the outer locking members 6 are arranged on the inner surface of the walls of the outermost compartments, while the inner locking members 5 are located outside the walls 5 of the outermost compartments. Thus, the inner parts 5 on the outer edges remain well in place inside the wall of the adjacent element. However, placement can also be the opposite.

The locking members have a lower surface 7 which is approximately perpendicular to the outer surface of the compartment wall. The upper surface 8 in turn forms an acute angle with the plane of the wall. Shaped in this way, the outer locking member 6 is easy to press on the inner one from above with the flexible material of the element giving in slightly. The approximately perpendicular lower surfaces 7 of the locking members, in turn, firmly lock the pair of locking members 15 together, preventing the outer member 6 from rising upwards.

When the bottoms of the compartments are closed, the elements can be easily manufactured by a vacuum method known per se. The heat-plasticized plastic sheet is placed on a ke-20 sweaty mold, and suction is applied to the surface of the sheet on the underside of the trays. In this case, the frame of the mold forms the walls 1 between the trays.

In order to form the locking members 5 and 6, the mold has protruding X 25 m on the sides of the frame, which can be pushed out by means of compressed air. To remove the finished element, the protrusions of the mold are pushed back into the walls of the frame.

The invention is not limited to the above application, but may vary in various ways within the scope of the claims. The elements can also be made so that the locks-30 have no bases, and such elements can also be provided with the locking members described above. The shape of the trays 2 may be different from that shown in the drawing. The ribs 3 can also be closed, as they are not quite low * to prevent the elements from being stacked on top of each other. They can also be left out 35 completely.

When the elements are open both from above and below, they can also be fitted to the slope in the opposite way, V; that the cavities in the walls widen upwards. In this case, the elements

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5 82509 can be easily lifted off the ground and reused if required.

Claims (4)

6 82509 An element for preventing the movement of loose soil or the like, which element comprises a plurality of compartments (2) and a frame formed by the walls (1) between the compartments, the walls (1) being hollow and open at one edge, and the outer surfaces of the walls inclined with respect to the plane so that the inner cavities of the walls extend towards the open edge of the walls, and wherein the element 10 has locking members (5, 6) in the outermost walls (1), the locking members of the two parallel elements being nested and nested. ) the inner part (5) is formed by a protrusion formed on the outer surface of the wall (1) and the outer part (6) is formed by a recess in the inner cavity of the wall (1), characterized in that the locking member pair (5, 6) has mating surfaces (7) are approximately perpendicular to the side surface of the wall (1) between the compartments (2). Element according to Claim 1, characterized in that the locking element pair (5, 6) has. mating surfaces (8) which form an acute angle with the side surface of the wall (1) between the compartments (2). Element according to Claim 2, characterized in that the acute angle tapers towards the narrower, closed edge of the wall (1). Element according to one of Claims 1 to 3, characterized in that the outer member (6) of the locking member pair (5, 6) is formed on the inner surface of the side wall (1) of the outermost compartment (2) of the element, and the inner member (5) is formed on the outer surface of the side wall (1) of the outermost compartment (2) of the element or vice versa. 35 II, 82509