JPH0656155A - Telescopic system rack - Google Patents

Abstract

PURPOSE:To save an installation space by a method wherein one of two right and left front pillars is provided retreated from the other so that the front pillars of adjacent racks do not interfere with each other when a plurality of racks are arranged with their front faces aligned. CONSTITUTION:A rear pillar 11-1 and a front pillar 11-2 as well as an upper rail 16 and a lower rail 12 of this telescopic system rack comprises inverted V-shaped steel. These are telescopic system racks which can be stacked vertically during use and can house another rack of the same structure inside when not in use. One of two right and left front pillars 11-1-2 is provided retreated from the other pillar 11-2-2, so that the front pillars of adjacent racks may not interfere with each other when a plurality of racks are arranged with their front faces aligned. In addition, one of the front pillars is positioned behind the other front pillar at an adjacent part P, so that the racks can be arranged with a distance reduced by a width of the front pillar, that is they can be arranged with a distance between the racks reduced, thereby saving an installation space.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called nesting rack which can be stacked vertically when used and can be housed inside another rack of the same structure when not in use. The present invention relates to a rack that can save installation space even when it is arranged in a large number in the lateral direction during use.

[0002]

2. Description of the Related Art The rationalization of storage and transportation of goods is a major issue in all industries. In particular, in order to cope with the recent increase in land prices and the increase in transportation costs, it is essential to save space for product storage and improve transportation efficiency. In order to meet such demands, Japanese Patent Publication No. 52-48554 and Japanese Utility Model Publication No. 61-68.
It is a nesting type rack as proposed in Japanese Patent No. 16, etc.

FIG. 9 is a view showing the basic form of a conventional nesting rack, (a) is a perspective view, and (b) is a plan view showing only the upper structure (however, two racks are arranged side by side in a lateral direction). Figure).

As shown in the figure, the nesting rack is provided with four pillars at four corners, and the upper part thereof is a horizontal beam 15 connecting between the rear pillars.
It consists of left and right upper rails 16 that connect the front and rear pillars.
The upper rail 16 is equilateral angle steel having the same shape as the lower rail 12 described later. The distance between the two pillars 11-1 located at the rear of the four pillars (outer method W ₁ ) is smaller than the distance between the left and right rails 16 (inner method W ₂ ).

At the bottom of the rack, there is a bottom frame composed of a horizontal beam 13 and a vertical beam 14 and a crosspiece 17 extending between these beams, and articles to be stored are stacked on the bottom frame. A lower rail 12 of equilateral angle steel is attached to a vertical beam 14 of the bottom frame with a connecting member 19. The connecting members 19 are vertical beams 14 and lower rails 12.
It also serves as a spacer for forming a space 20 into which the forklift claw is inserted. Reference numeral 18 is a reinforcing member that ensures the connection between the pillar 11-2 and the horizontal beam 13 of the bottom frame.

When the above rack is used, racks having the same structure can be stacked in several stages, and when stacked, the upper rail 16 of the lower rack fits with the lower rail 12 of the upper rack. Stabilize.

As mentioned above, the rear two columns 11-1 of the rack
Since the space between is narrower than the space between the left and right rails,
When not in use, a second rack of the same shape can be inserted into the first rack, a third rack can be inserted into the second rack, and so on, and stored in a small space. . The rack having such a structure is called a nesting rack, and the above storage is called nesting.

The nesting rack is excellent in stability when stacked and used for product storage in a factory or warehouse, and can be compactly stored (nested) in storage and transported when not in use. Has been prized in. However, the columns 11-1 and 11-2 of the conventional telescopic rack shown in FIG.
Was usually composed of a square tube from the viewpoint of securing strength. Therefore, even if the nesting is performed when not in use, only the thickness of the column will be projected forward. The state is shown in FIG. 8 (a). One side as a pillar is 50
When a square tube of mm is used, nesting 8 racks will result in 50 (mm) × 7 = 350 (m when compared with the case of one rack.
m), the front space is required.

The present inventor previously proposed a newly developed rack in which a column is formed of a section steel having a Λ (lambda) type cross section in order to reduce the forward protrusion of the rack at the time of nesting. Japanese Patent Application No. 4-137280). FIG. 8 (b) shows a nesting situation when the column is made of Λ-shaped steel, and h ₂ is the protruding distance. Compared with the protruding distance h ₁ shown in FIG. 8A, h ₂ is a little less than 1/5. This greatly contributes to the improvement of the storage efficiency of the nestable rack described later.

[0010]

As described above, the problem of space saving during storage (nesting) of the nestable rack has been solved by the inventor's previous proposal.
However, there is still a problem of space saving when using this nesting rack for storing goods.
That is, the front pillar of the conventional nesting rack (11-2 in Fig. 9)
It was common sense to place the left and right at the same position according to the front of the rack. Then, when a plurality of racks are installed laterally on a plane, the front columns of adjacent racks interfere with each other as shown in FIG. 9 (b). Even if the width (W ₃ ) of the pillars is very small compared to the total width of the racks, when a large number of racks are arranged side by side, the wasted space due to the interference of the pillars cannot be ignored.

A first object of the present invention is to provide a telescopic rack that can reduce installation space without mutual interference of front columns when arranged laterally on a plane.

A second object of the present invention is to save the installation space, and also to make it possible to reduce the width of the front protruding when nesting, or a nesting rack that can save the space in the vertical direction when stacked. To provide a rack. Other objects of the present invention will be mentioned in the following description.

[0013]

DISCLOSURE OF THE INVENTION The gist of the present invention is a nestable rack of the following (1) and (2).

(1) A nesting rack that can be stacked vertically when in use, and can accommodate racks of the same structure inside when not in use.
11-2-1) of the rack is installed more backward than the other front pillar (same as 11-2-2), and when multiple racks are arranged with their fronts aligned, the front pillars of adjacent racks Nested rack that has a structure that does not interfere with.

(2) A nested rack that can be stacked vertically when in use, and can accommodate racks of the same structure inside when not in use, and has two front pillars (11-2-2 in FIG. 1). (1 and 11-2-2) are retracted from the front of the rack by at least the thickness of the front pillars of the conventional nestable racks that are installed next to each other.

The nestable rack of (1) or (2) above,
The front and rear columns, and / or the upper and lower rails are preferably made of the Λ-section steel described above.

Here, the term Λ-shaped steel is used by the present inventor in Japanese Patent Application No.
It is related to the invention for which a patent application was filed as No. -137280.
As shown in, the section steel has a Λ (lambda) cross section. The characteristics of this Λ shaped steel are in the following items.

The angle (2θ) formed by the two sides 1 and 35 is 35 ° to
It is 60 °.

A straight portion 2 perpendicular to the axis of symmetry (Z) of the two sides is provided outside the connecting portion (throat) of each side 1, 1.

The ratio (H / H ₁ ) of the height H from the open end of the two sides to this straight line portion and the height H ₁ from the open end to the intersection of the extension lines of the outer straight lines of the two sides is 0.5 to It is 0.9.

A bulge 3 is provided outside the open end of each side 1, 1.

[0022]

FIG. 1 is a perspective view showing an example of the nesting rack of the present invention (the invention of (1) above). In this example, the rear pillar 11-1 and the front pillar 11-2 (hereinafter, when distinguishing between left and right are referred to as 11-2-1 and 11-2-2, respectively), the upper rail 16 and the lower rail 12 are described above. It is composed of Λ-shaped steel. This is the most desirable mode, but the column is a square tube,
The rail may be constructed of equilateral angle steel. In the rack of FIG. 1, the same members as those of the rack of FIG. 9 are denoted by the same reference numerals.

FIG. 2 is a plan view of the upper structure of the nestable rack of the present invention (hereinafter sometimes simply referred to as “rack”) of FIG. 1, and FIG. 3 is a plan view 3 of the bottom structure.

As shown in FIG. 2, the distance between the rear pillars 11-1 (outer method W ₁ ) is narrower than the distance W ₂ between the left and right rails 16, and the front pillars 11-2 are outside the rails 16. It is in. Therefore, if racks of the same structure are inserted in the direction of the arrow, nesting can be performed between the left and right front columns and the rails. The basic structure itself is no different from a normal nested rack.

The feature of the rack of the present invention is the arrangement of the front pillar 11-2.

As is clear from FIGS. 2 and 3, in the rack of the present invention, one of the front pillars 11-2-1 (left in the example of FIG. 1) is used.
Is set back from the front of the rack by a distance of L ₁ . As shown in FIG. 5, which will be described later, this L ₁ is made larger than the thickness t of the front pillars, and when racks of the same structure are arranged side by side with their front faces aligned, the front pillars of the adjacent racks are aligned. There is no interference between them.

FIG. 4 is a schematic plan view showing a state in which two racks of the present invention shown in FIGS. As shown in the figure, at P where the racks contact each other, the left front pillar 11-2-1 of the right rack is the right front pillar of the left rack.
Located on the back of 11-2-2. Therefore, the installation space of the rack can be reduced by the width of the pillar.

In one design example, the maximum width of the rack
If (W ₄ ) is 1260 mm, the column width (W ₃ ) is 55 mm. According to this calculation, when 23 racks are arranged side by side, 23 times the width of one pillar, that is, 55 × 23 = 1265 (mm) space will be available, and another space will be available in this space. It is possible to arrange many racks. Nested racks are used not only in the horizontal direction but also in the vertical (back) direction and upward direction, so that the above space saving effect increases three-dimensionally, which is a great benefit for rack users. Bring

FIG. 5A shows the right front pillar of the left rack of FIG.
FIG. 11 is an elevational view showing the mounting portions of 11-2-2 and the left front pillar 11-2-1 of the right rack with the upper rail 16 respectively. Figure 5 (b)
Is an enlarged view of a portion P of FIG. 4, and (c) is an AA arrow view thereof.

As shown in FIG. 5 (a), if one of the front pillars (11-2-1 in this case) is shorter than the other front pillar (11-2-2), (b) The connector does not get in the way when the two racks are arranged side by side like. Normally, the connector 21 is made of an angle, so if the thickness of its side is t ₁ , this
Front pillar 11-2-1 to create a gap slightly larger than t ₁
You just have to decide the length.

As shown in FIG. 5B, the retreat distance L ₁ of the front pillar 11-2-1 from the front surface of the rack is determined by the thickness (t) of the front pillar itself (the thickness of the connecting tool 21 (the connecting tool is In the case of an angle, make it larger than the value obtained by adding the wall thickness t ₁ ).

Needless to say, the above L ₁ must be larger than the above t, but when the right front pillar 11-2-2 itself is arranged at a position slightly retracted from the front of the rack. Determines L ₁ also by adding its receding distance. However, because, if too large a L ₁ in a state where the rack top structure overhanging the strength of problems L ₁
There is a limit to the size of.

FIG. 6 (a) is a plan view of the upper structure similar to FIG. 2 showing the rack of the present invention of (2). As is clear from comparison with FIG. 9B which is a top view of the conventional rack, in this rack, the left and right front columns 11-2-1 and 11-2-2 are both L ₂ from the front of the rack. It is set back by a distance. This L ₂ is larger than the thickness of the front pillar of the conventional rack (t ₂ shown in FIG. 9B).

FIG. 6B is a schematic plan view showing a state in which the conventional rack shown in FIG. 9 and the rack of the present invention are alternately arranged in parallel. In the adjacent portion P, the front pillar of the rack of the present invention is located behind the front pillar of the conventional rack, and as in the case described above, the width of the front pillar is narrowed, that is, the space between the racks is reduced. Can be narrowed and arranged.

The rack of the present invention of the type shown in FIG. 6 exhibits the effect of saving the installation space when it is used in combination with the conventional rack which has already been widely used in an alternating manner.

As described above, even if the arrangement of the front pillars is changed from that of the conventional rack, there is no influence on the nestability of the rack itself. That is, as can be easily understood from FIGS. 1 to 3, when not in use, a rack having the same structure can be nested in one rack.

The front and rear columns may be prisms. However, in order to save the space when nesting, it is desirable to form the front and rear columns with Λ-shaped steel.
As described in detail in the above-mentioned Japanese Patent Application No. 4-137280, the Λ-shaped steel shown in FIG. 6 has a small difference between the maximum and minimum values of the secondary radius of the cross section, and the occupied cross sectional area is almost equal. It is close to that of a square tube and can be used as a pillar material for structures instead of a square tube, and
It is also convenient for stacking and storing, or bundling for transportation and cutting. Moreover, it is inexpensive because it can be manufactured by hot rolling.

When the upper and lower rails 12 and 16 are made of Λ-shaped steel, the stability when stacked is higher than that of a conventional rack using equilateral angle steel as rails. In that case, as shown in FIG. 1, if the lower rail is arranged not in the entire length in the depth of the rack but in a space 20 provided partially, the space serves as the insertion portion of the pawl of the forklift. This structure serves to save space in the vertical direction (vertical direction) of the rack, as is clear from the comparison with the lower structure of the conventional rack shown in FIG.

When the Λ-shaped steel is used as the pillar material or the lower rail, the bulging portion 3 is formed by combining the bulge 3 with the grooved steel 30 as shown in FIG. 8 (c). It is advisable to employ a method in which the grooved steel is welded to other members by welding with the open end of.

[0040]

When one of the telescopic racks according to the present invention is used in a lateral arrangement, the racks can be packed closer to each other than the conventional racks. Further, when another rack of the present invention is combined with a conventional rack and alternately arranged in parallel, the racks can be arranged by narrowing by the width of the column. In any case, when a large number of racks are used, the effect of saving the installation area is great.

If the column is changed to a square tube and is made of Λ-shaped steel, the storage efficiency when nesting can be improved. Furthermore, if the upper and lower rails are also made of Λ-shaped steel, it is possible to secure stability when stacking racks and save space in the vertical direction.

The nestable rack of the present invention contributes to the rationalization of storage and transportation of products and the like, and also contributes to the improvement of the efficiency of storage and transportation of the rack itself.

[Brief description of drawings]

FIG. 1 is a perspective view showing a desirable example of a telescopic rack of the present invention.

2 is a plan view showing the upper structure of the telescopic rack of FIG. 1. FIG.

FIG. 3 is a plan view showing a bottom structure of the same.

FIG. 4 is a schematic plan view showing a state in which the nesting racks of the present invention are arranged side by side.

5 (a) is an elevation view showing the mounting portions of the right front pillar of the left rack and the left front pillar of the right rack of FIG. 4 with the upper rails, respectively, and (b) of FIG. An enlarged view, (c) is an AA arrow view of (b).

FIG. 6 (a) is a plan view of a superstructure showing another example of the nesting rack of the present invention, and FIG. 6 (b) is a schematic plan view showing a state in which the rack and a conventional nesting rack are juxtaposed. is there.

FIG. 7 is a cross-sectional view of a lambda section steel which is preferably used as a pillar material and a rail material of the nesting rack of the present invention.

FIG. 8 is a diagram showing nesting efficiencies of a square tube (a) and a lambda section steel (b) used as a pillar material of a conventional nesting rack. (c) is a cross-sectional view showing a state in which lambda section steel is used in combination with channel section steel.

FIG. 9A is a perspective view showing a basic shape of a conventional nested rack, and FIG. 9B is a schematic plan view showing a state where two racks are arranged side by side.

[Explanation of symbols]

1: Side of Λ-shaped steel, 2: Same straight part, 3: Same bulge part, 11-1: Rear pillar of nesting rack, 11-2, 11-2-
1, 11-2-2: same front pillar, 12: same lower rail, 20:
Same space, 21: Same connector

Claims (4)

[Claims] 1. A nesting rack that can be stacked vertically when in use, and can accommodate racks of the same structure inside when not in use, and one of the two front pillars on the left and right retracts from the other. A nested rack characterized in that the front columns of adjacent racks do not interfere with each other when a plurality of racks are arranged with their front faces aligned. 2. A nestable rack that can be stacked vertically when in use, and can accommodate racks of the same structure inside when not in use, and two front columns on the left and right are installed next to each other. A nestable rack characterized in that it is provided by retracting from the front of the rack by at least the thickness of the front pillar of a conventional nestable rack. 3. The telescopic rack according to claim 1, wherein at least the front pillar and the rear pillar are made of a shaped steel having a lambda-shaped cross section. 4. A telescopic rack according to claim 1, 2 or 3, wherein at least the upper and lower rails are made of a section steel having a lambda-shaped cross section.