rack

Abstract

To provide a rack that can improve the manufacturing efficiency of dam components. [Solution] The rack 1 is a rack capable of transporting cylindrical horizontal member parts 200 or vertical member parts that constitute a weir 100 installed in a river, and comprises a base part 2 that supports the horizontal member parts 200 or vertical member parts from below, and a plurality of column parts 3 erected above the base part 2. The plurality of column parts 3 include a loading column part 3A located on the periphery of the base part 2 and capable of loading other racks, and a suspension column part 3B with a suspension part at its upper end. The plurality of column parts 3 form a plurality of column part rows 30A, 30B in which the column parts 3 are spaced apart and arranged in a predetermined direction, thereby forming a storage part 4 capable of accommodating horizontal member parts 200 or vertical member parts between adjacent column parts 3.

Description

Technical Field

[0001] The present invention relates to a rack that can accommodate cylindrical cross-member parts or vertical-member parts that constitute a weir provided in a river and can be transported while accommodating them.

Background Art

[0002] Conventionally, as a weir provided in a river, a slit dam has been proposed in which horizontal connecting members connect upstream-side supports to each other, and a top-end connecting member connects the vicinity of the upper ends of the upstream-side support and the downstream-side support (see, for example, Patent Document 1). Such a slit dam is configured to capture boulders, driftwood, etc. by combining vertical and horizontal members.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The slit dam as described in Patent Document 1 is assembled at the construction site after each part is manufactured at the factory. That is, by sequentially performing appropriate processing on columnar members and the like, cross-member parts and vertical-member parts for constituting the slit dam (weir) are formed, but it is necessary to store and transport intermediate parts and completed parts during each processing step within the factory. Since a single weir includes a plurality of vertical and horizontal members, transporting these parts individually increases the man-hours, and it has been desired to improve efficiency.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a rack that can improve the manufacturing efficiency of the constituent parts of a weir.

Means for Solving the Problems

[0006] To achieve the above objective, the rack according to the present invention is a rack capable of transporting cylindrical horizontal or vertical member components that constitute a weir installed in a river, comprising: a base portion that supports the horizontal or vertical member components from below; and a plurality of column portions erected above the base portion, wherein the plurality of column portions include a loading column portion located on the periphery of the base portion and capable of loading other racks, and a suspension column portion having a suspension portion at its upper end, and wherein the plurality of column portions form a plurality of columns arranged in a predetermined direction with spacing between them, thereby forming a storage portion capable of accommodating the horizontal or vertical member components between adjacent column portions.

[0007] In one aspect of the present invention, a rack has, at least a portion of the plurality of column portions, an inclined introduction portion at its upper end that is inclined to move away from adjacent column portions as it extends upward.

[0008] In one aspect of the present invention, the rack has a tapered wall portion at its upper end and on the outer side of its peripheral edge, which is inclined to be inclined outward as it moves upward. [Effects of the Invention]

[0009] The rack according to the present invention can improve the manufacturing efficiency of components for dams. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view showing the rack according to this embodiment. [Figure 2] This is a schematic side view showing how the horizontal members are housed in the rack according to this embodiment. [Figure 3] This is a side view showing the loading column portion of the rack according to this embodiment. [Figure 4] This is a plan view showing the loading column portion of the rack according to this embodiment. [Figure 5] This is a schematic plan view showing how the horizontal members are housed in the rack according to this embodiment. [Figure 6] This is a perspective view showing an example of a dam equipped with horizontal member components housed in a rack according to this embodiment. [Modes for carrying out the invention]

[0011] Embodiments of the present invention will now be described with reference to the drawings. Figure 1 is a perspective view showing a rack 1 according to this embodiment; Figure 2 is a schematic side view showing how the horizontal member parts 200 are housed in the rack 1; Figure 3 is a side view showing the loading column section 3A of the rack 1; Figure 4 is a plan view showing the loading column section 3A of the rack 1; Figure 5 is a schematic plan view showing how the horizontal member parts 200 are housed in the rack 1; and Figure 6 is a perspective view showing an example of a dam 100 equipped with the horizontal member parts 200 housed in the rack 1.

[0012] As shown in Figures 1 and 2, the rack 1 according to an embodiment of the present invention is a rack capable of transporting cylindrical horizontal member parts 200 or vertical member parts that constitute a weir 100 installed in a river, and comprises a base part 2 that supports the horizontal member parts 200 or vertical member parts from below, and a plurality of column parts 3 erected above the base part 2. The plurality of column parts 3 include a loading column part 3A located on the periphery of the base part 2 and capable of loading other racks, and a suspension column part 3B with a suspension part at its upper end. The plurality of column parts 3 form a plurality of column part rows 30A, 30B in which the column parts 3 are spaced apart and arranged in a predetermined direction, thereby forming a storage part 4 capable of accommodating horizontal member parts 200 or vertical member parts between adjacent column parts 3.

[0013] The rack 1 of this embodiment accommodates, for example, the horizontal member parts 200 of a dam 100 as shown in Figure 6. The dam 100 is equipped with a plurality of vertical members 101 and horizontal members 102. At the time of shipment from the factory, a portion of the horizontal members 102 is welded to the vertical members 101, and at the construction site, the flange portions 103 provided on the horizontal members 102 are connected to each other. In this embodiment, the horizontal member part 200 is a part of the horizontal member 102 and is a part in its state before being welded to the vertical member 101. That is, the horizontal member part 200 is formed in a cylindrical shape as a whole, with one end being a welded portion to be welded to the vertical member 101, and the other end having a flange portion 103.

[0014] In the following explanation, the vertical direction is defined as the Z direction, and the horizontal plane as the XY plane. Furthermore, the up and down direction in the Z direction may simply be referred to as up and down. Also, these X, Y, and Z directions refer to the directions in which rack 1 is used within the factory, and may differ from the directions in which dam 100 is installed.

[0015] Rack 1 is formed by welding together a base section 2 and multiple column sections 3 to create a single integrated unit.

[0016] The base portion 2 is formed in the shape of a rectangular frame with the X direction as the long side and the Y direction as the short side, and has a pair of long side cylindrical portions 21 and a pair of short side cylindrical portions 22, with an opening 23 formed in the center. Both the long side cylindrical portions 21 and the short side cylindrical portions 22 are formed from prismatic metal members (for example, steel). In this embodiment, the long side cylindrical portions 21 and the short side cylindrical portions 22 are connected via the loading column portion 3A which will be described later, but even if they are directly connected good.

[0017] The plurality of column portions 3 are erected upward from the base portion 2 and include a loading column portion 3A, a suspension column portion 3B, and a normal column portion 3C. All of them are formed with a prismatic metal member (for example, steel material) as the main member. The plurality of column portions 3 form a column row 30A in which the column portions 3 are arranged in the X direction with intervals, and a column row 30B in which the column row 30A is arranged in the Y direction and the column portions 3 are arranged in the X direction with intervals, forming two rows of column rows 30A and 30B. The plurality of column portions 3 are located at the vertices of a square lattice when viewed from the Z direction.

[0018] The loading column portion 3A can load other racks and is arranged at the four corners of the rectangular frame-shaped base portion 2, that is, it is located at the peripheral edge portion of the base portion 2. The loading column portion 3A integrally has a lower portion 31 protruding below the base portion 2, a connecting portion 32 welded to the base portion 2, and an upper portion 33 protruding above the base portion 2.

[0019] The lower surface of the lower portion 31 may be closed by a plate member or may have a shape in which the end of a cylindrical member is open. By providing the lower portion 31, the base portion 2 is not directly placed on the ground and is arranged at a predetermined distance from the ground.

[0020] As also shown in FIGS. 3 and 4, the upper portion 33 has a tapered wall portion 34 at its upper end. The tapered wall portion 34 is formed on both the side opposite to the other loading column portion 3A facing in the X direction and the side opposite to the other loading column portion 3A facing in the Y direction. For example, in the lower left loading column portion 3A in FIG. 1, the tapered wall portions 34 are formed on the left side and the lower side. The tapered wall portion 34 has an inclination in a direction away from the other loading column portion 3A facing in the X direction and the other loading column portion 3A facing in the Y direction as it goes upward. Thus, the tapered wall portion 34 is provided outside the peripheral edge portion of the base portion 2 and is inclined so as to face the outside (opposite side to the opening portion 23) as it goes upward. Also, the upper surface 33A of the upper portion 33 is closed by a plate member.

[0021] The lower part 31 of the loading column 3A of rack 1 rests on the upper surface 33A of the upper part 33 of the loading column 3A of the other rack 1, and the tapered wall 34 abuts against this lower part 31 from the X and Y directions, restricting outward displacement. Furthermore, if the loading columns 3A of both racks 1 are misaligned in the XY plane during the loading operation of rack 1, the lower part 31 of the upper rack 1 abuts against the tapered wall 34 of the lower rack 1 and is guided, thereby correcting this misalignment.

[0022] Each suspension column 3B has a suspension section 35 at its upper end, and is provided in two locations in each of the two rows of column sections 30A and 30B, for a total of four suspension column sections 3B. The suspension column 3B only needs to be positioned at a predetermined distance from the center of the base section 2 in the X direction and the center of the Y direction. The suspension section 35 can be, for example, a through hole to which a hook 301 provided at the end of a wire rope 300 can be attached.

[0023] The standard column sections 3C are column sections other than the loading column sections 3A and the suspension column sections 3B, and in this embodiment, 10 of them are provided. The standard column sections 3C have an inclined introduction section 36 at their upper end, which is inclined so that it moves away from the adjacent column section 3 in the X direction as it goes upward. The inclined introduction section 36 is formed by bending a plate member and has an inverted V-shape (or inverted U-shape) with the upper side as the apex. When introducing a horizontal member component 200 between two adjacent column sections 3 in the X direction, if the horizontal member component 200 is misaligned in the X direction, the side surface of the horizontal member component 200 comes into contact with the inclined introduction section 36 and is guided, thereby correcting the misalignment.

[0024] As described above, since rack 1 has multiple column sections 3, between adjacent column sections 3 in the X direction A housing section 4 capable of accommodating the horizontal member component 200 is formed. A pair of column sections 3 and a base section 2 form an upwardly opening U-shaped section, and the two U-shaped sections are aligned in the Y direction to form the housing section 4. The housing section 4 can accommodate horizontal member components 200 whose cylindrical outer diameter is smaller than the distance between the pair of column sections 3. The outer diameter of the flange section 103 may be larger than the distance between the pair of column sections 3, and as shown in Figure 5, by shifting the horizontal member component 200 to be housed in the housing section 4 and the horizontal member component 200 to be housed in adjacent housing sections 4 in the Y direction, the flange sections 103 can be arranged alternately, thereby accommodating the horizontal member component 200.

[0025] Since an opening 23 is formed in the base portion 2, in the housing portions other than the housing portion 4 formed at the end in the X direction, the flange portion 103 of the housing member 200 does not interfere with the base portion 2. In contrast, in the housing portion 4 formed at the end in the X direction, the flange portion 103 comes into contact with the short side cylindrical portion 22.

[0026] The rack 1 is transported with multiple horizontal member components 200 housed in the storage section 4. At this time, the wire rope 300 can be attached to the suspension column section 3B, and the rack 1 can be transported by being suspended by a crane or the like. It is not necessary to house horizontal member components 200 in all of the storage sections 4, but the storage positions should be determined considering the center of gravity of the suspension. In addition, by transporting the rack 1, the newly transported rack 1 may be loaded onto the rack 1 that has already been placed.

[0027] Thus, according to the rack 1 of the embodiment of the present invention, by storing the horizontal member parts 200 in the storage section 4, multiple horizontal member parts 200 can be transported and stored together, thereby improving the manufacturing efficiency of the components of the dam 100. Furthermore, since the rack 1 has a loading column section 3A and is capable of loading, the space required for storing multiple horizontal member parts 200 can be reduced.

[0028] Furthermore, the presence of an inclined section 36 in the column section 3C allows for correction of positional misalignment when the horizontal member component 200 is housed in the housing section 4.

[0029] Furthermore, the presence of tapered wall sections 34 in the loading column section 3A allows for correction of positional misalignment between racks 1 when they are loaded.

[0030] Furthermore, the present invention is not limited to the embodiments described above, and includes other configurations that can achieve the objectives of the present invention, including the following modifications. For example, in the above embodiments of the present invention, the horizontal member component 200 is housed in the housing section 4, but any appropriate component may be housed depending on the type of dam, and only the vertical member component may be housed, or both the horizontal member component and the vertical member component may be housed.

[0031] Furthermore, in the above-described embodiment of the present invention, the standard column section 3C is assumed to have an introduction inclined section 36, but the loading column section and the suspension column section may also have an introduction inclined section. Also, for example, if the X-direction dimension at the upper end of the column section is sufficiently small and it makes point contact with a horizontal member or vertical member, and the misalignment can be corrected by the cylindrical outer surface of the horizontal member or vertical member, then an introduction inclined section may not be provided.

[0032] Furthermore, in the above embodiment of the present invention, the loading column 3A has a tapered wall 34, but the loading column may also have a restricting wall extending vertically at its upper end and outside the periphery of the rack to restrict the movement of the loading columns of other racks. With such a configuration, it is possible to suppress positional displacement after loading more easily than when a tapered wall is provided.

[0033] Although embodiments of the present invention have been described above, the present invention is based on the above embodiments of the present invention. The present invention is not limited to the above, but includes all embodiments included in the concept and claims of the present invention. Furthermore, each configuration may be selectively combined as appropriate to achieve at least some of the above-described problems and effects. For example, the shape, material, arrangement, size, etc., of each component subject to calculation in the above embodiment may be appropriately changed depending on the specific use of the present invention. [Explanation of symbols]

[0034] 1...Rack, 2...Base section, 3...Column section, 3A...Loading column section, 3B...Suspension column section, 34...Tapered wall section, 36...Inlet inclined section, 30A, 30B...Column section row, 100...Dam, 200...Horizontal member component

Claims

1. A rack capable of transporting cylindrical horizontal or vertical members that constitute a weir installed in a river, A base portion that supports the aforementioned horizontal member or vertical member from below, It comprises a plurality of columnar sections erected above the base section, The plurality of column sections include a loading column section located on the periphery of the base section and capable of loading other racks, and a suspension column section having a suspension section at its upper end. The rack is characterized in that the plurality of column sections are arranged in a predetermined direction with intervals between them to form multiple rows of column sections, thereby forming a storage section between adjacent column sections capable of accommodating the horizontal member components or the vertical member components.

2. The rack according to claim 1, characterized in that at least a portion of the plurality of column portions has an inclined introduction portion at its upper end that is inclined so as it extends upward, it moves away from the adjacent column portions.

3. The rack according to claim 1 or 2, characterized in that the loading column portion has a tapered wall portion at its upper end and on the outer side of its peripheral edge, which is inclined to be inclined outward as it is directed upward.

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