FI54823C - sorting arrangement - Google Patents

Description

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(22) HakemlspUvS - Ansöknlngsdag 10.10.7U

^ ^ ^ (23) Primer - Giltighetsdag 10.10.7 ^ (41) Become Public - Bllvlt offentllg 30.0U. 75

Patent and Registration Office .... ...... ... . . .

* (44) Date of placing on the market and issue. -

Patent-OCh registerstyrelsen Anaökan utlagd och utl.skrlften publlcerad 30.11.78 (32) (33) (31) Pyydetty etuoikeus —Begird prloritet 29.10.73

Sweden-Sweden (SE) 731 ^ + 6 ^ 1-7 (71) (72) Per Gösta Lennart Berglund, Box 3 * + * +, S-892 00 Domsjöverken,

Sweden-Sverige (SE) (lk) Ruska & Co (5 * +) Separator - Sorteringsanordning

In wall constructions, it is necessary that the earth masses, e.g. moraine, which are excavated along the incoming wall, are separated in a known manner so that coarse constituents such as boulders and stones are removed, while finer constituents such as gravel, sand, sand, etc. are used. to form a support layer for the wall frame.

In a simple method to accomplish this separation, quite simply spread the excavated earth masses along the wall dimension, then manually pick out the coarser boulders and rocks, leaving finer gravel and sand. This manual method is not rational - already due to the high labor costs associated with the method, not to mention the difficulties and disadvantages associated with labor.

In another, mechanical separation method, the excavated masses are conveyed to special separation devices, so-called support bearing separators, in which the coarse components are separated from the finer, usable components. Such support bearing separators basically consist of a grid which is made to vibrate by means of electric or internal combustion engines in order to pass the finer components through the grid. Although this separation method is much more rational than the manual method, it has significant drawbacks. Thus, the support bearing separators, due to the motor-driven operation and the associated equipment, are stationary in nature 54823 Λ ζ, which results in long) expensive transport of the masses from the excavation site to the separator and from there to the place of use. The fact that the separator is motor-driven still poses a number of practical drawbacks and limitations in the applicability of the method, especially in wall structures in remote areas.

Thus, there is often a lack of electrical power or the availability of suitable fuel, in addition to which access to spare parts or skilled labor is often limited when the engine fails.

It is an object of the present invention to replace the above technique with a suitable separating device comprising, in a manner known per se, a horizontally inclined grid, the separable article falling against it to move under the action of one or more springs, the grid being supported by one or more first legs at one end and one or a plurality of second legs longer than the first to hold the lattice in an inclined position.

In previously known separating devices of this type, the grid is suspended on a base by a tensile spring which alone receives the impact loads applied to the grid, which causes the spring to be subjected to such high stresses as the grid vibrates that the arrangement is not suitable for practical use. In addition to this, it is necessary in this arrangement that the columns or legs of the base in question extend a good distance above the upper part of the grid, which constitutes a difficult obstacle for the loading machine with which the masses are spread on the grid.

The object of the invention is to eliminate the above-mentioned drawbacks and to provide an easy-to-handle, adaptable and robust separation device. The features of the invention will become more apparent from the following claims.

With reference to the accompanying drawings, a more detailed description of an exemplary embodiment of the invention follows. In the drawings fig. 1 is a perspective view of a separator according to the invention, FIG. 2 is a side view of the same device working with a loader, FIG. 3 is an enlarged view, partly in section, of a detail of the device and FIG. 4 shows a part of an alternative embodiment of a grid.

In the drawing, 1 means a generally horizontal grid arranged so that it moves against the action of one or more springs against the action of the falling object against it, as will be explained in more detail below.

The grid 1 comprises, on the one hand, two inclined, mutually parallel side pieces 2,3, on the other hand, an upper body 4 and a lower body 5, which bodies together form a four-sided frame. In practice, the frame pieces can be relatively strong I- or U-beams. A plurality of support beams or rulers 6 extend between the two side pieces 2 and 3, and relatively thin rods 7 are arranged between the upper body 4 and the lower body, the number of which is at least equal to or preferably considerably greater than the number of support rulers. The mutual distance between the bars 7 determines the grain size of the goods to be separated. In the case of a device for separating wall construction masses, it is suitable that the distance between the bars is, for example, always 40 6 60 mm, in which case a suitable separated article is obtained for the support layer. The size of the frame and thus the lattice can in practice always be 2000-4000 mm x 2000-3000 mm, in which case the side pieces are preferably shorter frame pieces.

Arranged at or in the vicinity of the lower pieces 5 is a first pair of legs 8 connected by means of two-seater seats or seats 9 to which the legs can be locked by means of through-shocks or the like. A second pair of legs 10 longer than the first legs are arranged at the opposite end or top 4 of the frame to provide the slope in question. These second legs, as well as the first legs, are detachably connected to the frame by being provided at their upper ends with plates or guides 11 (see Fig. 3) which can be fitted to the seats 12 in the frame and locked thereto by means of shocks or similar locking members 13 through the aligned holes in the spacers and seats, respectively.

Each private second leg 10 is assembled from two parts, namely, an upper tubular female portion 14 and a lower male portion 15 telescopically inserted into the female portion. At least along the area where the male part is inserted inside the female part, said parts are curved or arcuate, the radius of curvature being substantially equal to the distance between the bend and the first leg 8. This allows the female part to move relative to the male part when the lattice is turned around the pivot point located at the first leg. Attached to the female portion is a bracket 16 having a protrusion 17, e.g., a tube passing through a hole in the second bracket 18 attached to the male portion 15. A screw compression spring 19 is threaded on top of this protrusion 17, the abutments of which have both supports, as a result of which the part load in question is transferred to the male part of the leg 10 by means of a spring.

4,5423

In the installed state, the male and female parts are held together by a chain 20 or the like, one end of which is permanently attached to the female part and the other end can be locked in a suitable manner to the male part.

The described device can be used as follows. See Figure 2.

The device is placed on a substantially horizontal surface in the vicinity of the place where the excavation of the earth masses takes place, which is carried out by means of a loading machine shown in dotted lines. From the excavation site, the loader bucket 22 takes up the ground mass, which is raised and tilted when the bucket enters the separator, whereby the undivided earth masses fall on the grid 1, as illustrated in Fig. 2. 19 effects, which at any moment seek to restore the lattice to its original position. In practice, this means that the lattice, as the goods fall down, is subjected to an oscillating or oscillating movement, which effectively affects the rolling of the goods and their separation into finer and coarser components. As a result of the inclination of the lattice together with the rocking motion, the coarser components of the article roll down along the lattice bars 7 and settle on the side of the lattice 23, while the finer components fall through the lattice and form a heap 24 under the lattice.

If any waste remains on the grid, it can easily be removed with a kind of bucket on top of the grid to completely clean the grid, which in itself is not necessary, as the waste will in any case be removed when the next bucket is emptied.

The separated material forming the pile 24 can be easily loaded into the dispensing device in question, e.g. a truck, because the bucket 22 comfortably comes under the grid and reaches the entire area below it.

The angle between the grid and the horizontal must be in the range of 25 ° -55 °, preferably 35 ° -45 °. The most suitable is an angle of about 40 °. All angles are determined with the grid in the rest position. If the angle of inclination were too large, an undesirably large number of finer ingredients would follow the coarser ingredients and thus be wasted. On the other hand, if the angle of inclination were too small, an unacceptably large number of coarser girders would remain on the lattice and interfere with the separation operation.

Figure 4 shows an alternative embodiment of the grid described above. According to this embodiment, the grid is assembled from a plurality of relatively strong rubber bands or other resilient members 25 which are tensioned between respective pairs of frame pieces and intersect with each other.

Claims (2)

54823 forming a grid or grid pattern. Not only is the separation device according to the invention inexpensive and efficient (it has various additional advantages) which are important in practical work. Thus, it is very simple to transport the device from one place to another, because the bucket of the loading machine without any obstacle can be brought under the grid and the device can be lifted relatively easily when the support lines 6 rest on the bucket. In this way, the device is very flexible in its usability, allowing very short transport distances and its utilization is almost 100? S. Of course, the invention is not limited only to the embodiment described and shown in the drawings. Thus, the invention is applicable not only to the separation of earth masses, but also to the separation of other rolling goods, e.g. coal, coke, roots such as potatoes, fish, etc. Many technical changes can be made. _ Instead of legs of a certain length, one or both pairs of legs can be adjusted, for example, so that the legs are assembled from telescopically moving and interlocking parts. Other types of springs can be used instead of screw compression springs. Regardless of the type of springs used, they can only be attached to each pair of legs instead of the other. The lattice can be formed by a regular grid instead of an arrangement of support rulers and bars. Furthermore, a plate can be arranged between the two short legs 8, which ensures the separation of the two holes 23 and 24 if these become too large. The lattice may be constructed wholly or in part of resilient members, e.g., bed spring type or rubber bands of the type shown in Figure 4. Such members may be contemplated for use in place of or in addition to the springs described above. Other variations are also conceivable within the scope of the following claims. A separating device, in particular for separating paint qualities, comprising a horizontally inclined grid (1), the separable article falling against it to move under the action of one or more springs (19), the grid being supported at one end by one or more first legs (8) and at opposite end by one or more second legs (10) longer than the first, for holding the grid in an inclined position, characterized in that the second leg (10) is connected to the grid by a bond comprising two mutually moving parts (14, 15) moving against the action of a spring, which together determine the parts of the arcuate trajectory