A storage system for storing stacks of boards in storage rows, used in a factory for manufacturing boards

Abstract

A storage system for storing stacks of boards (1) in storage rows, which is used in a factory for manufacturing boards, in particular OSB boards, MDF boards or particle boards, wherein each storage row comprises three parallel elongate support members (9, 9', 9", 9'''), between which there is a space for a satellite board cart (10) for transporting stacks of boards (1). The invention is embodied such that the horizontal load-bearing portion of the support members is formed by one or more glued laminated beams (9').

Description

TECHNICAL FIELD

[0001] The object of the present invention is a storage system for storing stacks of boards on storage rows, which is used in a factory for manufacturing boards, in particular OSB boards, MDF boards or particle boards, wherein each storage row includes three parallel elongated support members, and there is a space for a satellite board carrier for transporting stacks of boards between them.

[0002] Generally speaking, the wood-based boards produced on a continuous-action press line are stored in an intermediate storage section for a certain period of time before downstream working stages such as sanding and sawing. BACKGROUND ART

[0003] The typical mass of a large stack in a factory for manufacturing boards, in particular OSB boards, MDF boards or particle boards, is 40 - 80 tons. The typical stack height is 3 - 5 meters, the width is 1.8 - 3.6 meters, and the length is 5 - 9 meters. The stacks in the storage system according to the object of the present invention are transported by two board carriers (open wagons), which travel on tracks along the longitudinal direction of the storage section under the stack and transfer the stack to a storage row resting on three longitudinal support members. These board carriers moving in the longitudinal direction are referred to as "satellite board carriers" herein, and they always run in pairs. The stack is transferred to and removed from the storage row as follows: A pair of satellite board carriers lift the stack from the bottom surface (lower surface) of the stack so that the stack is disengaged from its longitudinal support members, transport the stack to the storage row, and lower the stack onto the longitudinal support members in the storage section, or when removed from the storage section, lower the stack onto the support members on the main board carrier. The movement of the pair of satellite board carriers in the transverse direction, that is, the movement from one longitudinal row to another longitudinal row, is carried out by driving the pair of satellite board carriers onto the main board carrier and then transporting the pair of satellite board carriers to the next site, that is, to other longitudinal rows.

[0004] In the structures known in the art, the part of the longitudinal support members in the storage area that bears continuous longitudinal loads is a steel structure or a reinforced concrete structure. The top surface (upper surface) of the support members must be very precisely flat so that no deformation occurs in the boards stored in the stack. Generally, the typical flatness requirement for the upper surface of the longitudinal support members in the storage section is a few millimeters, for example, ±2 millimeters. It is very difficult to achieve such a high precision by using commonly available steel beams such as I-beams, HEA-beams and HEB-beams because their ordinary manufacturing inaccuracies are worse than required. Similarly, the in-situ cast reinforced concrete structures according to the prior art have the same precision requirements, which are very difficult to achieve.

[0005] In two structures according to the prior art, the part carrying the continuous longitudinal load must be covered with some other material, such as an MDF board, which must be adjusted over its entire length to meet the flatness requirements. For example, the adjustment can be made by using washers of different thicknesses. Of course, this work is both slow and uneconomical. Summary of the Invention

[0006] The object of the present invention is to provide a storage system for large stacks, in which a longitudinal support member carrying a continuous load can be inexpensively manufactured, can be effectively transported when packed in a shipping container, and can be easily installed with the required precision. The storage system according to the present invention is characterized in that the horizontal load-carrying part of the support member is formed by one or more glued laminated (laminated) beams.

[0007] An embodiment of the storage system according to the present invention is characterized in that the horizontal load-carrying part of the support member is formed by two parallel glued laminated beams.

[0008] Another embodiment of the storage system according to the present invention is characterized in that the glued laminated beams are positioned at a certain distance from each other.

[0009] Another embodiment of the storage system according to the present invention is characterized in that there are steel members between the glued laminated beams, the glued laminated beams are supported on the steel members from their opposite side surfaces, and the glued laminated beams are fastened to the steel members.

[0010] Another embodiment of the storage system according to the present invention is characterized in that there are reinforced concrete members between the glued laminated beams, the glued laminated beams are supported on the reinforced concrete members from their opposite side surfaces, and the glued laminated beams are fastened to the reinforced concrete members.

[0011] Another embodiment of the storage system according to the present invention is characterized in that the horizontal load-carrying part of the support member is formed by three parallel glued laminated beams.

[0012] Another embodiment of the storage system according to the present invention is characterized in that the cross-sectional height of the central glued laminated beam among the three parallel glued laminated beams is shallower than that of the glued laminated beams at the edges.

[0013] Another embodiment of the storage system according to the present invention is characterized in that the glued laminated beams are sized so that their length is suitable for a shipping container.

[0014] Another embodiment of the storage system according to the present invention is characterized in that the glued laminated beams have one or more parts of the beam on the upper and lower surfaces, and the strength of these parts is greater than that of the intermediate layer.

[0015] Another embodiment of the storage system according to the present invention is characterized in that the two topmost layers and the two bottommost layers of the glued laminated beam are made of wood having a greater strength than the wood of the intermediate layer.

[0016] Some of the advantages that can be mentioned for the present invention are that the support structure reduces costs because the combined length of the longitudinal supports in the storage area is significantly large. In addition, costs can be optimized by using glued laminated wood, where the parts of greatest strength of the glued laminated wood are on the upper and lower surfaces of the beam, and in this case, less expensive wood of a lower strength class can be used in the intermediate part of the beam. Of course, the stresses in the beam carrying a continuous load are greatest in the upper and lower surfaces of the beam.

[0017] Another advantage that can be mentioned for the present invention is that by means of the glued laminated beam, the upper surface of the support can be made sufficiently flat without additional procedures. In addition, the installation of the supports according to the present invention is easy and they can be advantageously transported in shipping containers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be described in more detail hereinafter with reference to the drawings, by means of some preferred embodiments, in which:

[0019] Figure 1 there is shown a storage system in which the present invention can be used.

[0020] Figure 2 there is shown the storage system as viewed in the direction of the storage row.

[0021] Figure 3 there is shown Figure 2 the enlarged detail A in.

[0022] Figure 4 there is shown the storage system as viewed in the direction of the storage row.

[0023] Figure 5 there is shown Figure 4 the enlarged detail B in.

[0024] Figure 6 there is shown a side view of a storage row provided with three supports according to the present invention.

[0025] Figure 7 there is shown Figure 6 the C-C cross-section in.

[0026] Figure 8 there is shown Figure 7 the enlarged detail A in.

[0027] Figure 9 there is shown an axonometric top view of a storage row formed by three supports.

[0028] Figure 10 shows Figure 9 an enlarged view of detail B in Detailed implementation mode

[0029] Therefore Figure 1 shows an overview of a storage system of a factory for manufacturing boards, especially OSB boards, MDF boards or particle boards. The board stacks are labeled with reference numeral 1, and there are three board stacks in total. Of course, there can be more board stacks, but not all board stacks are shown for the sake of clarity. Figure 1 The board stack at the bottom is located above the board truck (i.e., the main board truck 2) moving in the transverse direction. The main board truck moves along the track 3. Therefore, this movement direction is called the "transverse direction".

[0030] On the right side of the main board truck 2, a conveyor 4 is shown in the figure, and the board stacks enter and leave the storage via the conveyor 4. The current supply of the main board truck is carried out through the cable 6 of the current supply unit 7. When the transverse board truck moves towards the current supply unit 7, the cable 6 is wound onto the cable reel 5. Correspondingly, when the main board truck moves away from the current supply unit 7, the cable 6 unwinds from the cable reel 5.

[0031] Figure 1 Three longitudinal storage rows 8 are shown, and each storage row is formed by three longitudinal support members 9. Of course, there can be many more such storage rows 8 than three rows. In addition, they can be located on both sides of the main board truck 2. When looking at the figure, they are only shown on the left side of the main board truck 2 here for now.

[0032] Figure 1 A pair of board trucks is also shown, which includes two board trucks 10 moving side by side in the longitudinal direction. They are hereinafter referred to as "satellite board trucks", and they lift and move the board stacks from below. Figure 1 The top part shows the pair of satellite board trucks, which are running under or away from the stack 1. The pair of satellite board trucks 10 can lift the stack into the air and transfer it from the main board truck 2 to the storage row 8 or from the storage row 8 to the main board truck 2. Therefore, the pair of satellite board trucks 10 is arranged such that one satellite board truck is located between one of the most central support member 9 and the outermost support member 9. Correspondingly, the second satellite board truck is located between the most central support member 9 and the other outermost support member 9. Therefore, there are always two side-by-side satellite board trucks, which are called the "pair of satellite board trucks 10".

[0033] Figure 1 A second pair of satellite board trucks is also shown, and they can be slightly seen under the stack 1 on the left side. Therefore, the main board truck 2 can be arranged to serve more than one pair of satellite board trucks 10. The second pair of satellite board trucks is not necessarily required, but it increases the capacity, especially in a very large storage. In Figure 1At the base of [the relevant part], a satellite trolley pair 10' can also be seen, which can be used as a spare part. In other words, if the conventional satellite trolleys 10 malfunction or they need repair, one or both of the satellite trolleys 10' are put into use. In the storage system according to the present invention, the commissioning of replacing the satellite trolley 10' is very easy and does not require installation work or connection work.

[0034] Figure 2 The figure shows the storage system as viewed along the direction of the storage row 8. This figure shows how the stack of plates 1 is on top of the supports 9 (here marked as 9', 9”). Thus, each stack of plates 1 is supported by three supports 9. The satellite trolleys 10 are visible between the supports 9. In this figure, more than one pair of satellite trolleys is shown, but as mentioned before, there may be one or more pairs of satellite trolleys. Figure 2 On the right edge of [the relevant part] is the main trolley 2, and the cable 6 and the cable reel 5 of the main trolley can be seen. The stack of plates 1 is also on top of the main trolley (on the top).

[0035] Figure 3 A possible structure of the support according to the present invention is shown in more detail. In this embodiment, there are two glued laminated beams side by side on each support, which are represented by the reference numeral 9'. Although not clearly shown in Figure 2 and Figure 3 clearly shown, between the glued laminated beams 9' are steel components such as steel plates, for example, which are supported on the support structure 9” (or legs) of the support. The glued laminated beams 9' are fastened in place from their opposite sides by means of steel plates in a manner described later in this application. The support structure 9” of the support is preferably made of concrete material or reinforced concrete material.

[0036] The glued laminated beams 9' are fastened in place such that when fastened in place, their height is generally greater than their width. Commercially available glued laminated beams can be used in the present invention, and the dimensions can be selected individually as needed.

[0037] Figure 4 and Figure 5 show a storage system similar to that shown in Figure 2 and Figure 3 shown, but the structure of the support is different. Therefore, only the structure of the support is described with reference to these figures. In the embodiment according to Figure 4 and Figure 5 , there are also two glued laminated beams 9' on each support, one next to the other. Between them are reinforced concrete components 9”', so they are wider than the steel plates in the previous embodiment. The support structure 9” is still preferably concrete or reinforced concrete. In this case, the components 9”' extending between the glued laminated beams 9' have the same structure as the support structure 9”.

[0038] Figure 6 A side view of the outermost supports 9', 9'' of the storage row is shown. Figure 7 Shows Figure 6 the C-C cross-section of Figure 8 while Figure 7 shows the enlarged detail A in

[0039] Thus, the glued laminated beam 9' is placed against the reinforced concrete member 9''', and fastened with bolts 11 extending through the entire structure. The structure of the glued laminated beam can also be seen from this cross-sectional view, where the top and bottom layers are made of stronger wood than the middle layer. Their wood is also slightly thinner than that of the middle layer. This structure can be seen more precisely in Figure 10 where Figure 10 shows Figure 9 an enlarged view of detail B in Figure 10 In the embodiment shown, the glued laminated beam 9' comprises eight layers, one on top of the other, and these layers are glued to each other, where the top two and bottom two layers are made of stronger wood than the four middle layers. They are also slightly thinner layers. Of course, this is only one possible implementation method, but it is advantageous to use a glued laminated beam with top and bottom layers of stronger wood, as these layers bear greater stress. The middle layers can be made of less strong and cheaper wood.

[0040] Figure 9 Shows a storage row, which includes three elongated supports. The support structure 9'' is arranged at appropriate intervals below the glued laminated beam.

[0041] One track of the satellite pallet truck is labeled with reference numeral 12. Of course, each satellite pallet truck has two tracks 12 between the longitudinal supports.

[0042] It is obvious to those skilled in the art that the present invention is not limited to the above embodiments, but can be varied within the scope of the claims shown below. Thus, the horizontal load-bearing part of the support can also be formed by three parallel glued laminated beams. In this case, the central glued laminated beam of the three parallel glued laminated beams can be shallower in its cross-sectional height than the glued laminated beams at the edges. In addition, it is advantageous to dimension the glued laminated beam to be suitable for a shipping container in length.

Claims

1. A storage system for storing a stack of plates (1) in a storage row (8), said storage system being used in a factory for manufacturing plates, wherein, Each storage row includes three parallel elongate supports (9), which are supported on a support structure (9”) arranged at a distance from each other, and there is a space for a satellite pallet truck (10) for transporting stacks of boards between the supports (9), characterized in that the horizontal load-bearing part of the supports (9) is formed by one or more glued laminated beams (9').

2. The storage system according to claim 1, wherein The horizontal load-bearing part of the support (9) is formed by two parallel glued laminated beams (9').

3. The storage system according to claim 2, characterized in that, The glued laminated beams (9') are positioned at a distance from each other.

4. The storage system according to claim 3, wherein There are steel components between the glued laminated beams (9'), and the glued laminated beams (9') are supported on the steel components from their opposite side surfaces and are fastened to the steel components.

5. The storage system according to claim 3, wherein There are reinforced concrete components (9''') between the glued laminated beams (9'), and the glued laminated beams (9') are supported on the reinforced concrete components from their opposite side surfaces and are fastened to the reinforced concrete components.

6. The storage system according to claim 1, wherein The horizontal load-bearing part of the support is formed by three parallel glued laminated beams (9').

7. The storage system according to claim 6, wherein The central one of the three parallel glued laminated beams (9') is shallower in cross-sectional height than the glued laminated beams at the edges.

8. The storage system according to any one of claims 1 to 7, characterized in that, The glued laminated beams (9') have one or more parts of the beam on the upper and lower surfaces, and the strength of these parts is greater than the strength of the intermediate layers.

9. The storage system according to claim 8, wherein The two topmost layers and the two bottommost layers of the glued laminated beams (9') are made of wood, and the strength of the wood is greater than the strength of the wood of the intermediate layers.

10. The storage system according to any one of claims 1 to 7, characterized in that, The board is an OSB board, an MDF board or a particle board.

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