JP2022098955A - Nesting rack - Google Patents

Abstract

To provide a nesting rack in which a shelf part is not inclined downward by the weight of a load.SOLUTION: A nesting rack includes: a horizontal base part 10; a column part 30 erected perpendicularly upward from a rear end part of the base part 10; and a horizontal shelf part 50(70) engaged with respect to the column part 30 detachably. The shelf part 50(70) is inclined upward in a state where there is no load.SELECTED DRAWING: Figure 4

Description

The present invention relates to a netting rack in which a shelf portion on which a load pallet is placed can be detachably attached to a pillar portion and the shelf portion is tilted upward with no load.

A plurality of nesting racks that enable stacking of cargo pallets are known, for example, as in Patent Documents 1 to 3. Such nesting racks can be compactly stored by stacking (nesting) when not in use.

Utility Model Registration No. 3194350 Gazette Utility Model Registration No. 3219511 Japanese Unexamined Patent Publication No. 2014-237456

As shown in FIG. 6 of Patent Document 1, there is a conventional nesting rack in which a horizontally long material can be easily mounted by omitting a front support. In such a nesting rack, since the shelf portion is in a cantilevered support state at the rear end portion, there is a problem that the front side of the shelf portion tends to incline downward when the load of the load pallet is large. When the front side of the shelf portion 50 is inclined downward in this way, the cargo pallet becomes unstable.

Therefore, an object of the present invention is to provide a nesting rack in which the shelf portion does not tilt downward due to the load of the load.

In order to solve the above-mentioned problems, the nesting rack of the present invention is detachably engaged with a horizontal base portion, a pillar portion erected vertically upward from the rear end portion of the base portion, and the pillar portion. It is a nesting rack having a matching horizontal shelf portion, and is characterized in that the shelf portion is tilted upward in a state where there is no load.

According to the nesting rack of the present invention, it is possible to prevent the shelf portion from tilting downward due to the load of the load.

It is a perspective view of the nesting rack which concerns on one Embodiment of this invention. It is a perspective view of the nesting rack with the shelf part removed. It is a perspective view which looked at the nesting rack of FIG. 1B from the rear side. It is (a) a perspective view seen from diagonally above and (b) a perspective view seen from diagonally below. It is a perspective view which looked at the nesting rack of FIG. 1A from the rear side. It is a side view of the nesting rack in the state where the cargo pallets are stacked in two stages. It is (a) a perspective view seen from diagonally above, (b) a perspective view seen from diagonally below, and (c) an enlarged perspective view of the shelf part which concerns on a modification. It is a perspective view which looked at the nesting rack which attached the shelf part which concerns on the modification, from the rear side. It is a side view of the state which the shelf part which concerns on the modification is turned upside down and overlapped with the base part. It is a side view of the state in which a plurality of nesting racks are stacked.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. By assigning the same reference numerals to the same or corresponding parts throughout the drawings, duplicate explanations will be omitted as appropriate.

(Overall configuration of nesting rack)
FIG. 1A shows a nesting rack 100 according to an embodiment of the present invention. Using this nesting rack 100, the pallets P on which the load W is placed can be stacked in two stages as shown by a chain line. Since the nesting rack 100 does not have a front support, even a long load W in the left-right direction can be easily placed on the upper and lower stages of the nesting rack 100 by using a forklift.

The nesting rack 100 is made of steel, and has a horizontal base 10, a pillar 30 erected vertically upward from the rear end of the base 10, and a horizontal that detachably engages with the pillar 30. It has a shelf portion 50 and the like. The pillar portion 30 has a plurality of cross rails 35 to 38 as engaging portions for detachably engaging the shelf portion 50 at a plurality of locations in the height direction of the pillar portion 30. The number of cross rails 35 to 38 can be appropriately increased according to the height of the pillar portion 30.

Most of the conventional nesting racks have a constant height of shelves on which pallets are placed. Therefore, the height of the shelf cannot be changed according to the height of the load accommodated in the lower stage, and if the height of the load exceeds the predetermined height, the load interferes with the upper shelf. Sometimes the nesting rack could not be used. Since the height of the shelf portion 50 can be changed in the nesting rack 100 of the present invention, it is not necessary to worry about the height of the load W.

The base 10 is composed of rectangular frame members 11 to 14 and two flat square pipes 15 and 16 arranged inside the frame members 11 to 14. The two flat square pipes 15 and 16 form a pair of left and right fork pocket FPs into which a pair of left and right fork claws of a forklift can be inserted.

The left and right frame members 11 and 12 extend in the front-rear direction of the nesting rack 100, and the front-rear frame members 13 and 14 extend in the left-right direction of the nesting rack 100. The two flat square pipes 15 and 16 are arranged in parallel with the left and right frame members 11 and 12, and both front and rear ends of the square pipes 15 and 16 are connected to the front and rear frame members 13 and 14 by welding or the like. ..

The pillar portion 30 is arranged between a pair of left and right main pillars 31 and 32 made of square pipes and the main pillars 31 and 32, and is made of a square pipe slightly thinner than the main pillars 31 and 32. It has a pair of left and right sub-pillars 33, 34. The lower ends of the main pillars 31 and 32 and the sub pillars 33 and 34 are welded to the base portion 10, respectively.

Inclined braces 39, 39 are welded in an X shape to the back surfaces of the main pillars 31, 32 and the sub pillars 33, 34. The inclined braces 39, 39 reinforce the rigidity of the column portion 30 in the left-right direction.

Engagement portions composed of a pair of engaging cross rails (35, 36) (37, 38), which are vertically different from each other, are arranged at two positions, an upper end portion and an intermediate portion in the height direction of the pillar portion 30. Both ends and intermediate portions of the engaging cross rails (35, 36) (37, 38) are welded to the main pillars 31, 32 and the sub-pillars 33, 34, respectively.

In the engaging cross rails (35, 36) (37, 38), the lower engaging cross rails 36, 38 are arranged on the front side, and the upper engaging cross rails 35, 37 are arranged on the back side. There is. The vertical spacing of these engaging cross rails (35, 36) (37, 38) is set to be substantially the same as the vertical width of the horizontal members 51 to 54 of the shelf portion 50, which will be described later.

As shown in FIGS. 2A and 2B, the shelf portion 50 has four horizontal members 51 to 54 extending in the front-rear direction of the nesting rack 100 and the front end portions of the horizontal members 51 to 54 in the left-right direction. It has a first connecting member 55 to be connected and a second connecting member 56 for connecting the inner end portions of the horizontal members 51 to 54 in the left-right direction. The longitudinal intermediate portions of the two inner horizontal members 52 and 53 are connected to each other by a third connecting member 57. The third connecting member 57 is for reinforcing the horizontal members 52, 53 or the shelf portion 50, but can also be used as a handle when attaching / detaching the shelf portion 50 to / from the pillar portion 30.

The second connecting member 56 is arranged on the lower side of the inner base end portion of the horizontal members 51 to 54. Then, when the shelf portion 50 is attached to the engaging cross rails 37 and 38 at the intermediate height of the pillar portion 30 as shown in FIG. 3, the front surface of the central portion of the second connecting member 56 abuts on the lower engaging cross rail 38. .. As a result, the displacement of the shelf portion 50 to the back side is restricted by the pair of left and right sub-pillars 33 and 34.

The four horizontal members 51 to 54 are composed of square pipes, and the square pipe opening at the inner end of the horizontal members 51 to 54 is closed by a rectangular plug plate 58. The upper end portion 58a of the plug plate 58 functions as a retaining piece, and rises vertically from the upper surfaces of the horizontal members 51 to 54 with a predetermined length. The distance between the upper end portion 58a and the second connecting member 56 is set according to the front-rear direction separation width of the engaging cross rails (35, 36) (37, 38).

Then, with the shelf portion 50 attached to the engaging cross rails 37 and 38 of the pillar portion 30 as shown in FIG. 3, the four upper end portions 58a as the retaining pieces engage with the engaging cross rails 37. As a result, the displacement of the shelf portion 50 toward the front side is restricted by the engaging cross rail 37.

Next, a method of engaging the above-mentioned shelf portion 50 with the engaging cross rails 37 and 38 of the pillar portion 30 will be described with reference to FIG. As shown by the alternate long and short dash line in FIG. 3, the back base end portion of the shelf portion 50 is inserted between the engaging cross rails 37 and 38 in the direction of the arrow (1) in a state of being inclined diagonally downward. Then, after engaging the four upper end portions 58a as retaining pieces at the back base end portion of the shelf portion 50 with the back surface side of the engaging horizontal rail 37, the shelf portion 50 is lowered in the direction of the arrow (2). , Hold almost horizontally as shown in FIG.

In this state, the inner base ends of the four horizontal members 51 to 54 are in contact with and supported by the lower surface of the engaging cross rail 37 and the upper surface of the engaging cross rail 38, respectively. Further, the second connecting member 56 of the shelf portion 50 comes into contact with the engaging cross rail 38 on the front side.

The inner base ends of the two outer horizontal members 51 and 54 are located inside the main pillars 31 and 32, and the inner base ends of the two inner horizontal members 52 and 53 are on both sides of the sub-pillars 33 and 34. Located in. Therefore, the front-back movement of the shelf portion 50 is restricted by the engaging cross rails 37 and 38, and the left-right movement of the shelf portion 50 is restricted by the main pillars 31 and 32 and the sub-pillars 33 and 34.

(Stacking of cargo pallets)
FIG. 4 shows a state in which the pallets P on which the load W is mounted are stacked using the nesting rack 100 equipped with the shelf portion 50 as described above. When the shelf 50 is mounted without the pallet P, the front side of the shelf 50 is slightly inclined upward so that the shelf 50 becomes horizontal when the load of the pallet P is applied to the shelf 50. desirable.

Therefore, with respect to the horizontal line HL of FIG. 4, the extension line OL of the shelf portion 50 when the shelf portion 50 is mounted without the pallet P is tilted upward at an angle θ. This is because if the front side of the shelf portion 50 is inclined downward while the load of the pallet P is applied to the shelf portion 50, the pallet P becomes unstable.

Ideally, the size of the angle θ is θ = 0 (horizontal state) when the load of the pallet P is applied to the shelf portion 50. However, if the front side of the shelf portion 50 is not excessively inclined upward, 0 <θ (upward inclination) may be set in a state where the load of the pallet P is applied to the shelf portion 50. Normally, if the range of 0.5 ° <θ <10 ° is set, the front side of the shelf portion 50 does not incline downward due to the load of the pallet P on which the load W is placed.

(Modification example of the shelf)
Next, a modified example of the shelf portion will be described with reference to FIGS. 5A to 5C. The shelf portion 70 of FIG. 5 is horizontal with four horizontal members 71 to 74 extending in the front-rear direction of the nesting rack 100 and a first connecting member 75 for connecting the front end portions of the horizontal members 71 to 74 in the left-right direction. It has a second connecting member 76 that connects the inner base ends of the members 51 to 54 in the left-right direction.

A plug plate 78 is attached to the back base end of the shelf 70 as in FIG. 2. The upper end portion 78a of the plug plate 78 engages with the back surface side of the engaging cross rail 37 in a state where the shelf portion 70 is attached to the pillar portion 30 as shown in FIG. 6, and functions as a retaining piece for the shelf portion 70. ..

Since the second connecting member 76 does not project to the upper surface and the lower surface of the shelf portion 70, the shelf portion 70 removed from the pillar portion 30 is superposed on the base portion 10 as shown in FIG. 7A and stacked (nesting) as shown in FIG. 7B. It is convenient to do. On the other hand, in the shelf portion 50 of FIG. 2, since the second connecting member 56 protrudes from the lower surface of the shelf portion 50, when the shelf portion 50 is turned over and superposed on the base portion 10, the second connecting member 56 is on the upper side. It will stick out. Therefore, the second connecting member 56 becomes an obstacle when stacking (nesting) as shown in FIG. 7B.

(Stacking of nesting rack)
The shelf portion 70 of FIG. 5 is configured as described above, and the shelf portion 70 can be attached to the pillar portion 30 of the nesting rack 100 as shown in FIG. When the nesting rack 100 is not in use (when stored), the shelf 70 is turned over and superposed on the base 10 as shown in FIG. 7A, and a plurality of nesting racks 100 in this state are used as shown in FIG. 7B (FIG. 7B). 6 units in the example) Stacking (nesting).

In FIGS. 7A and 7B, the upper end portion 78a of the shelf portion 70 as a retaining piece engages with the back surface of the frame member 14 of the base portion 10, and the central portion of the second connecting member 76 is a pair of left and right sub-pillars 33, 34. It abuts on the base end. Further, as in the case of the shelf portion 50 described above, the inner base ends of the two outer horizontal members 71 and 74 are located inside the main pillars 31 and 32, and the inner two horizontal members 72 and 73 are located on the inner side. The base ends are located on both sides of the sub-pillars 33 and 34. Therefore, the front-back movement of the shelf portion 50 is restricted by the engaging cross rails 37 and 38, and the left-right movement of the shelf portion 50 is restricted by the main pillars 31 and 32 and the sub-pillars 33 and 34. In this way, since the positional deviation of the shelf portion 70 from the front, back, left and right is prevented, multi-layer stacking (nesting) is possible in a stable posture.

The inclined braces 39, 39 that reinforce the rigidity of the pillar portion 30 in the left-right direction are slightly overhanging on the back surface side of the pillar portion 30. Therefore, when stacking as shown in FIG. 7B, a gap corresponding to the thickness of the inclined braces 39, 39 is formed between the pillar portions 30, although the gap is slight.

However, if the rigidity of the column portion 30 in the left-right direction can be ensured without the inclined braces 39, 39, the inclined braces 39, 39 can be omitted. Therefore, in that case, the gap between the column portions 30 can be completely eliminated in the stacking state of FIG. 7B, and the stable posture of the multi-layer stacking can be further improved.

Further, since the base 10 of the nesting rack 100 has a pair of left and right fork pockets FP, the pair of left and right fork claws of the forklift can be inserted into the fork pocket FP of the nesting rack 100 at the bottom of FIG. 7B and lifted. It is possible to move a plurality of stacked nesting racks 100 at once.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified in various ways. For example, in the above-described embodiment, the engaging cross rails (35, 36) (37, 38) as the engaging portions of the pillar portion 30 are arranged at two locations in the height direction, but such engaging cross rails (35) , 36) (37, 38) may of course be arranged at two or more places in the height direction of the pillar portion 30.

Further, it is also possible to form the engaging portion of the shelf portion 50 (70) other than the engaging cross rails (35, 36) (37, 38), for example, the main pillars 31, 32 and the sub pillars of the pillar portion 30. It is also possible to engage the engaged portion formed at the inner end portion of the shelf portion 50 (70) with the engaging protrusions formed on the inner side surfaces of the 33 and 34. In addition, the shelf portion 50 (70) may be formed in a grid pattern as described above, or may be formed of a simple single plate.

Further, the base portion 10 and the shelf portion 50 (70) can be configured to be expandable and contractible in the front-rear direction by using a stretchable member that meshes with each other in a nested manner. By doing so, it is possible to cope with the change in the depth size of the cargo and the pallet.

10: Base 11-14: Frame material 15, 16: Square pipe 30: Pillar 31, 32: Main pillar 33, 34: Sub-pillar 35-38: Engagement horizontal rail 39: Inclined brace 50, 70: Shelf 51 ~ 54: Horizontal member 58: Plug plate 58a: Upper end (retaining piece)
71-74: Horizontal member 78: Plug plate 78a: Upper end (retaining piece) 100: Nesting rack P: Pallet W: Load

Claims (8)

A nesting rack having a horizontal base, a pillar portion vertically erected upward from the rear end portion of the base portion, and a horizontal shelf portion detachably engaged with the pillar portion. , A nesting rack characterized in that the shelf portion is tilted upward with no load. The nesting rack according to claim 1, wherein the size of the inclination of the shelf portion is such that the shelf portion becomes horizontal due to the load of the load placed on the shelf portion. The nesting rack according to claim 1 or 2, wherein the pillar portion has engaging portions for engaging the shelf portion at a plurality of positions in the height direction of the pillar portion. The engaging portion has a pair of engaging cross rails arranged in different upper and lower stages, a lower engaging cross rail is arranged on the front side, and an upper engaging cross rail is arranged on the back side. The nesting rack according to claim 3, wherein the nesting rack is characterized by the above. The nesting rack according to claim 4, wherein the back side base end portion of the shelf portion can be inserted and engaged with each other between the pair of engaging cross rails from diagonally above. The nesting rack according to claim 5, wherein an engageable retaining piece is disposed on the back surface of the upper engagement cross rail at the back base end portion of the shelf portion. The nesting rack according to claim 6, wherein the shelf portion can be stacked in a state of being overlapped with the base portion. The nesting rack according to claim 6 or 7, wherein the retaining piece engages with the end of the base portion in a state where the shelf portion is turned upside down and overlapped with the base portion.

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