FI68384B - APPARATUR FOER TRANSPORT AV VIRKESKNIPPEN - Google Patents

Description

68384

EQUIPMENT FOR THE TRANSFER OF TIMBER BUNCHES - APPARATUR FÖR TRANSPORT AV VIRKES KNIPPEN

The present invention relates to an apparatus for conveying bundles of timber or similar large objects over an obstacle, e.g. length, which transfer members are provided with bundle lifting units.

It is quite advantageous to transport bundles of timber by swimming along rivers. The problem is usually the movement of bundles past the dams of power plants and still often past the rocky and low-water rapids connected to the dams. If it is possible to transfer the bundles directly from the upper water to the lower water, so that the transfer distance remains very lean, only a bundle crane can be used as an aid. Unfortunately, however, the transfer distances are so long - sometimes even a few kilometers - that it is impossible to use a bundle crane alone. For longer transfer distances, various rail-moving systems have generally been used, such as one transfer carriage, two counterbalanced transfer carriages or even complete trains with locomotives. The disadvantage of all these equipment and methods is the small capacity and also the fact that the bundles cannot be transported in complete bundles past the dam. It is a great waste of time that the bundles have to be detached from each other before transfer and reattached after transfer. Of course, the total capacity suffers.

Until now, moving entire bundles has been very cumbersome and virtually impossible. There are large conveyors rotating in a horizontal or vertical plane with which attempts have been made to move entire bundles, but due to their large size and complex structure, these equipments are very expensive and clumsy and also have a high susceptibility to failure.

The object of the present invention is to obviate the above-mentioned drawbacks 2 68384 and to provide an advantageous, new type of solution for moving bundles of timber, either detached or connected to one another. The apparatus according to the invention is characterized in that the distance between the lifting units is equal to the distance between the fixed support supports. In this case, there is only one lifting unit between the two fixed support supports. The advantage of the invention is the simplicity of the structure of the equipment and its suitability for different terrain shapes.

According to the invention, the continuous bundle can be moved continuously over a dam or other obstacle. The bundles in the bundle do not need to be detached for transfer. On the other hand, the bundles separated from each other can just as well be moved over the dam in a continuous queue using the apparatus according to the invention.

The apparatus according to the invention operates in such a way that in each transfer period the bundle is lifted by means of lifting units in the transfer members and transferred from the previous supports to the next supports to which the bundle is lowered, after which the unloaded transfer members are returned to their initial position. Thus, the bundles are in periodic motion. The return movement of the transfer members can be faster than the transfer movement because the mass of the unloaded transfer members is substantially smaller.

The similar work steps of all the transfer members are preferably made to operate simultaneously. In this case, one common drive device can be arranged for the transfer members, which can be located, for example, at the highest point of the track.

The bundle is preferably moved one distance at a time, which is relatively short compared to the length of the bundle, most preferably shorter than half the length of the bundle. The apparatus is thus made simple, since the transfer members do not have to bypass the fixed support supports.

A preferred embodiment 68384 of the apparatus according to the invention is characterized in that the fixed support supports form a passage inside which there is a path on which the transfer members run. The advantage in this case is that the size of the transfer suction 1 is made small and the equipment simple. Likewise, the lifting and lowering event can be implemented with simple devices.

The invention will now be described in more detail by way of example with reference to the accompanying drawings, in which

Figure 1 shows a side view of the whole bundling apparatus,

Figure 2 shows a top view of the initial end of the bundle transfer apparatus,

Fig. 3 shows a fixed support and a bundle of wood seen from the end of the track, 68384 Fig. 4 shows a transfer member and a bundle of wood seen from the end of the track, and Fig. 5 shows a part of the equipment seen from the side and with some of the transfer members in different stages.

Fig. 6 corresponds to Fig. 3 and shows another embodiment.

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From the upper water to the lower water, the track 2 leads, which, depending on the case, also runs under water at one or both ends. At the beginning of the track 2 there is a feed device 10 which feeds the log bundles 1 to the transfer members 3. The feed device can be a kind of chain mat for pulling the bundles towards the transfer members or a feed crane , so it will not be described in more detail here. Above the track 2, densely fixed support supports 4 are built, the support surface of which follows the shape of the bundle. The supports 4 conduct the load force to the ground on each side of the track. The distance between the supports 4 depends on the length of the log bundles 1, so that the distance should be less than half the length of the bundle. In this case, at least two supports 4 always support the bundle 1 simultaneously and in such a way that the center of gravity of the bundle remains between the supports, whereby the bundle does not swing down from the supports in its longitudinal direction. However, since the distance of the supports 4 is not evenly distributed with respect to the length of the log bundle 1, there are often situations in which a log bundle is also supported by three supports at the same time. A line of transfer members moves along the track 2, consisting of individual transfer members 3 connected to each other by a connecting member 6. Each of the transfer members 3 has two lifting units for lifting and lowering the bundles 1. The lifting and lowering device is, for example, a hydraulic cylinder 7 attached to a transverse support 8, the upper surface of which follows the shape of the bundle 1. In addition, the transfer member 3 has vertical guides 5 for stabilizing the support 8.

The lifting device with its vertical guides 5 and supports 8 is hereinafter briefly referred to as the lifting unit 9. The transfer members 3 and the distance between them are dimensioned so that the distance between the lifting units 9 is again less than half the length of the bundle 1 -5-68384. Most preferably, the distance between the lifting units is the same as the distance between the fixed support supports 4. In the apparatus according to the example, one lifting unit 9 is attached to each transfer member 3 at each end so that there is always one lifting unit between the fixed supports 4. The transfer members 3 and the supports 4 are dimensioned in such a way that the transfer members can only move the distance between the supports 4.

In the following, it is described in more detail how the transfer of the bundle string from the upper water to the lower water is performed using the apparatus according to the invention. To simplify the description, only one bundle transfer is described, but it is natural that the whole bundle sequence can be transferred using the same method by connecting the required number of transfer members 3 simultaneously. After the bundle of floats has been floated in the upper water basin, the first bundle of the queue can be fed by means of the feeding device 10 to the transfer member 3. When the first bundle 1 rests on the supports 8 of the transfer member 3, the bundle is raised thus, the entire transfer member string moves forward the distance that the transfer member 3 can move - i.e. the distance between the supports 4. In reality, the distance is somewhat shorter, since the thickness of the lifting unit 9 in the longitudinal direction of the track limits the transfer distance. After moving forward, the transfer member 3 lowers the tree bundle 1 on the fixed supports 4. Now the bundle 1, as well as the entire string bundle, has moved forward by approximately one distance between the fixed supports 4. The transfer member 3 then returns to its initial position with the bracket 8 down and, having reached the initial position, lifts the bracket 8 up again and up the log bundle 1 which has been in place at the same time. This continues the pulsating cycle. When there are log bundles throughout the transfer journey, i.e. when all the fixed supports have a log bundle resting at the same time, all the bundles move forward simultaneously and land simultaneously on the next supports 4. Thus, the interconnected bundle strings move smoothly.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to the example described above, -6 '68384, but may vary within the scope of the claims set forth below. Thus, for example, the invention need not be limited to the transfer of timber bundles at power plant dams. It is also conceivable to move containers or other objects of similar shape, such as barges. The transfer can take place at the dam, over the isthmus or even on dry land over the barrier. In addition, it should be noted that the transfer can also be performed by the equipment in the reverse direction. This is advantageous especially when moving containers or barges, whereby empty containers or barges can be returned using the same equipment. It is also possible to move both timber bundles and barges or containers with the same equipment. Figure 6 shows a fixed support 4 for such a purpose. Reference numeral 1 denotes a bundle of timber and reference numeral 11 denotes a barge or container. Of course, the support B in the lifting unit 9 can also be shaped in a corresponding manner.

It has been shown above that each transfer member 3 has two lifting units 9. However, this is not necessary, and the transfer member can have only one lifting unit. In this case, the transfer member can be more easily threaded out between the fixed support supports 4, for example for maintenance.

Claims (5)

7 68384 An apparatus for conveying bundles of timber (1) or similar large objects along an obstacle, for example over a dam, an upwardly curved conveying path (2) by means of a conveying member (3), the conveying path (2) comprising fixed support supports (4), the reciprocating conveying members (3) wood from the supports of the bundle (1) to the next supports and the transfer members are arranged in succession in a row along the entire length of the transfer path, the transfer members (3) being provided with lifting units (9) of the bundle (1), characterized in that the lifting units (9) are equidistant greater than the distance between the fixed support supports (4). Apparatus according to claim 1, characterized in that the fixed support supports (4) form a passage inside which there is a track (2 J) on which the transfer members (3) spring. Apparatus according to Claim 1, characterized in that the lifting unit (9) is formed by a transverse support [8] which can be moved vertically by means of a hydraulic blade (7). Apparatus according to one of Claims 1 to 3, characterized in that the transfer elements (3) consist of carriages, each of which has two lifting units (9). Apparatus according to one of Claims 1 to 4, characterized in that the distance from one fixed support (41) to the other is less than half the length of the bundle (1).