JPS6353807B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to storage racks, and more particularly to a channel support for a deck that is mounted on a shelf.

In some types of storage racks in material handling and storage equipment, the storage racks consist of front and rear transverse racks supported by vertical columns and a plurality of racks resting across the upper ledges of each front and rear girder. It may consist of an elongated support member. Decks, shelves, or pallets can be supported on vertical support members.

One particular form of decking member may be a wire mesh shelf welded to a plurality of elongated groove-shaped support members having opposite end portions that rest on the front and rear girders. If the front and rear girders are stepped stilts having recessed steps or recesses, the opposite end portions of the groove-shaped support members are made to rest against the steps. However, if the step is too shallow and the end portion is of the same uniform depth as the rest of the channel profile, the decking member will protrude too high above the step girder. If the depth of the support groove profile is reduced to approximately the same height as the decking member, the support groove profile will not support the decking member, i.e. the shelf, especially when supporting very heavy loads. , would be proportionately weakened to make the strength of , inappropriate.

To overcome the above problem, the bottom of the end section of the channel profile made to rest on the step is cut off so that the end section is lower in height than the side walls of the main channel section and the connecting web section is completely removed. Instead, it consists only of a pair of vertically extending groove profile side walls. Such construction preserves the depth and strength of the main body of the channel support member, but the bottom cut-off still weakens the end portions, making them difficult to handle when resting on the steps of a tier under heavy loads. , bending, crushing, or otherwise causing damage to the end portions.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an elongated channel-shaped support member in which the end portions have a reduced height, but the side walls of each end portion are connected by a web portion.

The end portion of each channel support member made in accordance with the present invention is preferably molded by pressing a die of a predetermined shape downwardly onto the end portion of the inverted channel member; As a result, the web portion is forced down as the sidewalls are cut.
The excess web material is bent down to form a downwardly projecting looped double-walled central flange.
Therefore, the material present in the end portion of the groove profile is utilized to form a very strong end portion. The side wall sections of each end section are continuously connected to each other by an inverted web section, as well as an additional central flange with double wall thickness for strength and stability. It is provided for.

A pair of arcuate or convex support surfaces are formed on opposite web portions of the double-walled central flange to integrally connect the central flange to the outer wall portions of each end portion of the channel support member.

The method of molding the end section as described above is faster and more economical than the conventional method of removing a portion of the web and sidewall of the end section as described above.

The upper edges of the side walls of the channel support members are welded in a conventional manner to the cross wire of the shelf to support the wire mesh shelf on the transverse stepped girder.

Referring now to the drawings in more detail, FIG.
A storage rack 10 is disclosed that includes a rack 11 having opposing side beams 17 connecting the storage racks 11 and 14. The forward step 18 is adjustably supported between the forward posts 12 and 13 using supports 19 and 20 of conventional construction. Receptacle 19 is provided with a plurality of vertically spaced keys or teeth 21 that adjustably engage vertically spaced holes 22 in post 12 . The front stepped girder 18 is provided with a step 24.

The stepped rear part 25 has supports 26 at both ends.
and 27 to the rear columns 15 and 14, respectively. Each receiver 26 and 27 may be the same as receivers 19 and 20. The rear step girder 25 has the rear step 24 of the front step 18.
A step 28 is provided facing each other. That is, the step 28 is on the front side of the rear girder 25 and the step 24 is on the rear side of the front step girder 18.

The deck members adapted to be supported by the front step 18 and the rear step 25 in the sill 11 are parallel and uniformly spaced;
In the form of a wire mesh shelf 30 having a plurality of longitudinally extending wire rods 31, ie, from front to back, which are firmly fixed to elongated horizontal parallel uniformly spaced wire rods 32 below. There is. A plurality of laterally spaced groove-shaped support members 34 made in accordance with the present invention are secured to the bottom surface of the transverse wire rod 32, such as by welding.

Each elongated channel support member 34 has a main channel portion including a web 35 integrally connected to the lower edge portions of a pair of vertically disposed side walls 36 and 37. Joined by welds 38 to the bottom surface of crossbar 32 are the upper edges of side walls 36 and 37.

Upper end portions 39 and 40 of each groove-shaped support member 34
are structurally the same except that they extend in opposite directions.

The forward end section 40 has a pair of side wall sections 41 and 42 that are lower in height than the side walls 36 and 37 of the main channel section of the channel support member 34. Side wall portion 41
and 42 are vertical extensions of side walls 36 and 37, respectively, of the main channel section. The upper edges of the side wall portions 41 and 42 may also be secured to the bottom surface of the horizontal wire rod 32 by welds 38.

The lower edge portions of sidewall portions 41 and 42 are connected by a web portion that includes a pair of downwardly convex or arcuate support surfaces 43 and 44, respectively. The inner portions of the support surface project upwardly in the form of a pair of flange walls 45 and 46 and join together at an upper edge portion in a looped portion 47 to form an upwardly projecting, longitudinally extending flange member 48. . Each of the end portions 39 and 40 is formed by molding a respective end portion of the channel support member 34 and adjacent portions of the web 35 and side walls 36 and 37 are transversely cut by a die to form the web portions. Pressed upwardly, the excess metal in the center of the web is bent upwardly into a looped portion 47, forming a looped flange member 48 and a downwardly directed convex support surface 43, as best shown in FIG. and 44.

Preferably, the looped edge portion 47 abuts the lower surface of the wire rod 32 and is secured to the wire rod 32 by a weld 49, so that the flange member 48 can extend upwardly as far as it can be extended, as shown in FIG. You'll understand. When the flange member 48 is extended upward as far as it can be extended, the overall depth of the end portion 40 is the lower limit of the depth, and the stepped 1
It is designed to sit on the front stage 24 of the shallow shelf in the 8. Typically, the tier 24 is about 7/8 inches below the plane of the top wall of the upper shelf 50 of the stilt 18. The wire mesh shelf 30 is slightly elevated above the upper shelf 50 by the thickness of the upper wire rod 31 and can project forward to form the front apron 52 into the shape of the "waterfall" wire mesh shelf 30. This can be seen in Figure 5.

Groove-shaped support member 1 shown in FIGS. 6 and 7
34 is the groove-shaped support member 34 shown in FIGS.
and the corresponding web 35 and side wall 3
It has a web 135 and side walls 136 and 137 of the same shape and dimensions as 6 and 37 to support the wire mesh shelf 30. However, the end portion 140 is deeper than the end portion 40 in order to seat the front step 124 of the step 118 which is a deeper step from the top shelf 150. The representative stepped 118 is
It will have a vertical step of 4.13 cm (1 5/8 inches).

End section 140 includes an extended sidewall section 141 that is the same as end section 40 except for the difference in height or depth.
and 142, arcuate support surfaces 143 and 144, flange walls 145 and 146, and flange member 1
There are 48 looped portions 147. Side wall portion 14
1 and 142 are corresponding arch-shaped support surfaces 143
and 144 are housed in the upper step 144, so that the height is higher than the side wall portions 41 and 42, and the upper part of the wire mesh shelf 30 is approximately flush with the upper shelf 150.

The end portions 140 are molded from a groove section that is the same size, shape, and contains the same amount of material as the groove support member 34 so that the central flange member 148
is shorter in height than the central flange member 48 of the end portion 40.

Regardless of the height of the end section 40 or 140, there is a balance of strength between the various elements of the end section. Although sidewall portions 41 and 42 are relatively shallow, ie, of low height, sidewall portions 141 and 14
2 is deeper to give it more strength. To offset these differences in strength, the end portions 40 have central flange members 4 that are significantly stronger due to their greater height and because they are welded to the transverse wire rods 32.
It has 8. In contrast, central flange member 148 is shorter in height and therefore does not have the strength of central flange portion 48. End portions 40 and 140
Even for end sections having a height intermediate to the height of This is because the height decreases accordingly. The end portion 40 still has the same amount of material but is bent and collapsed to a different height.

8 and 9 illustrate a conventional groove-shaped support member 55 having side walls 56 and 57 and a web 58. FIG. The end portion 60 of the conventional groove-shaped support member 55 is constructed such that the entire lower portion of the web and the extended side walls remain at the desired height to rest on the stepped 18 steps 24. It is formed by simply removing the lower part of the. An inherent weakness of the prior art end section 60 is that the sidewall section 61
and 62 are completely disconnected from each other and extend freely, except that they cantilever from the side walls 56 and 57 of the main channel section. The end portion 60 of the prior art has a side wall portion 6.
There is no web connection between 1 and 62. In an actual load test, sidewall sections 61 and 62 typically
When supporting the load supported by the wire mesh shelves 30 in the storage racks 11, they easily bent, twisted, or broke. Additionally, forming end portion 60 is more expensive than forming end portions 40 and 140. It is the extension side wall section 6
1 and 62 requires a time-consuming cutting operation to remove the lower portions of the lower groove profiles. On the one hand, all that is required to form either end portion 40 or 140 is a single top-to-bottom movement of the appropriate die. Groove-shaped support members such as 34 and 134 with end portions 39, 40 and 140, respectively, can be manufactured quickly and economically.

The reason for forming the end portions 40, 140 and even 60 is to provide adequate strength to support the wire mesh shelves 30 as they support the typically heavy objects typically stored in storage racks such as 10. Each groove-shaped support member 34, 13
This is to keep the depths of grooves 4 and 55 larger.

End sections 40 and 140 also have greater strength due to the double walled construction of central flange member 48. Double walls 45 and 46 are automatically folded so that the excess material sticks out upwards.
form. The arched shape of support surfaces 43 and 44 also provides greater strength than a flat shape.

Additionally, there are no sharp intersections or joints in the overall shape of end portion 40. Various side wall parts 4
1 and 42, the supporting surfaces 43, 44, and the side flange walls 45 and 46 are all smooth, continuous, and curved.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a wire mesh shelf attached to a plurality of channel supports made in accordance with the present invention, with portions removed and attached to a pair of stepped girders in a storage rack; There is. FIG. 2 is a partial front view of a portion of the storage rack, wire mesh shelves and groove-shaped support members shown in FIG. 1; FIG. FIG. 4 is a partial bottom view taken along line 4--4 of FIG. 3; FIG. 5 is an end view of the groove support member thus constructed; FIG. 3rd about one end part of
6 is a partial cross-sectional view taken along line 5--5 of the figure; FIG. 6 is a view similar to FIG.
Figure 7 shows the fifth line taken along line 7-7 of Figure 6.
Figure 8 is a partial cross-sectional view of one end portion of a conventional groove-shaped support member resting on a step of a partially shown stepped girder; 9 is a cross-sectional view taken along line 9--9 of FIG. 8, showing the steps in phantom. FIG. 24... Step, 30... Wire mesh shelf, 34... Groove-shaped support member, 35... Web, 36, 37... Side wall, 40... End portion, 41, 42... Side wall portion,
43, 44...Supporting surface, 45, 46...Flange wall, 47...Loop-shaped edge portion, 48...Central flange member.

Claims (1)

[Claims] 1. A pair of front pillars 12, 1 arranged in a rectangular pattern.
3 and a pair of rear columns 14, 15, and one side girder 16 connecting the front column and the rear column on one side.
and another side girder 17 connecting the front column and the rear column on the other side, a front stepped 18 connecting the pair of front columns and a rear stepped 25 connecting the pair of rear columns, Used in a storage rack 10 having a deck member 30 and a plurality of elongated groove-shaped support members 34 secured to the underside of the deck member, including: (a) opposing side walls 3 having a top edge and a bottom web 35;
(b) forming a vertical extension of said side walls 36, 37 but having a shallower depth than said side walls 36, 37 and having a lower edge portion; (c) said respective end portions 39, 40 further include side wall portions 41, 42 having sidewall portions 41, 42 having side wall portions 41, 42; a supporting surface 43 connecting said lower edge portion and suitable for resting on a ledge of a corresponding support beam, so as to be able to support said lower edge portion;
44. A deck channel-shaped support member for a storage rack, further comprising a web portion having a shape of 44. 2. A storage rack deck channel support member according to claim 1, wherein said web portion includes an elongated central flange member projecting upwardly from said support surface between said side wall portions. 3. The storage rack deck channel support member of claim 2, wherein said supporting surfaces (43, 44) include a pair of downwardly convex supporting surfaces on opposite sides of said central flange member (48). 4. A deck channel support member for a storage rack according to claim 3, wherein said side wall portions 41, 42 and said web portion are integrally formed on each of said end portions. 5. A storage rack deck channel support member according to claim 4, wherein each of said end portions 39, 40 is molded into a corresponding end of said channel support member 34. 6. A storage rack deck channel support member according to claim 2, wherein said central flange member (48) includes a pair of flange walls connected to said support surface (48) and recessed into an upper looped edge portion (47). 7. The storage rack deck groove-shaped support member according to claim 6, wherein the support surfaces 43 and 44 include a pair of downwardly convex support surfaces that respectively connect the flange walls. 8. The storage deck channel support of claim 1 further comprising a deck member in the form of a wire mesh shelf member having a bottom surface and an anchoring mechanism joining the upper edge of the side wall to the bottom surface of the shelf member. Element.