JP2016196342A - Support shelf using prismatic pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain structure of a prismatic pipe which can prevent drainage function of a drain hole from deteriorating even if a bottom wall side of the prismatic pipe is arranged sideways and upward.SOLUTION: In a right-side crosspiece member 6 that is a prismatic pipe made of iron-based metal of a support shelf, drain holes 16 are drilled at corners 6c between bottom walls 6a and one side walls 6b. The drain holes are cut out in an inclined shape across the sides of the one side walls 6b and the sides of the bottom walls 6a, and constituted of rectangular openings 16a at one ends near the bottom wall sides and rectangular openings 16b at the other ends near the one side wall sides. This allows either one of the openings 16a and 16b to point downward, even if setting wrongly the circumferential direction of the right-side crosspiece member when the member is joined to each constituting member.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drainage structure for a prismatic pipe made of, for example, an iron-based metal, and a support shelf using the prismatic pipe.

  As is well known, for example, pallets for storing and managing automobile parts, frozen meat, etc. are stacked in multiple stages using a support shelf formed in a frame shape by a plurality of prismatic pipes, Space saving in the warehouse is planned.

  Examples of conventional pallet support shelves include those described in the following Patent Document 1 previously filed by the present applicant.

  Briefly, this support shelf is arranged along the front-rear direction between four hollow internal pillars erected at the four corners and the left and right front pillars and the left and right rear pillars. The pallet is placed between the left and right side beam members, the rear beam member disposed along the horizontal direction at the lower part between the rear columns, and the upper ends of the columns. Possible rectangular shelf frame.

  Each of the columns and crosspieces is formed by a rectangular pipe having a square cross section, and each of the crosspieces 20 has a plurality of drain holes 21 formed in the bottom wall 20a as shown in FIG.

  Each drain hole 20 is formed by a drill or the like at a substantially center position in the width direction on both end sides in the axial direction of the bottom wall 20a of each cross member 20, and rainwater or the like that has entered the cross member 20 or the like. Is discharged onto the floor of the warehouse or the ground to prevent the occurrence of rust and the like inside each crosspiece member 20.

Japanese Patent No. 5060379

  However, since each drain hole 21 in each crosspiece member 20 is formed at a substantially central position in the width direction of the bottom wall 20a, the crosspiece member 20 and each post are joined by welding. In addition, if the crosspiece members 20 are mistakenly arranged on the bottom wall 20a side in the circumferential direction or the upward direction, the position of the drain hole 21 becomes the side or the upper side, and the drainage function is There is a possibility that it cannot be demonstrated at all.

  In particular, when the prismatic pipe has a square cross section, it is easy to cause the above-described technical problem because misassembly with respect to each column is likely to occur.

  The present invention was devised in view of the technical problem of the drainage hole of the conventional prismatic pipe, and even if the bottom wall side of the prismatic pipe is mistakenly arranged, for example, sideways or upward, It aims at providing the drainage structure of the prismatic pipe which can prevent the fall of a drainage function.

  According to the first aspect of the present invention, in the drainage structure of the hollow hollow prismatic pipe, a drainage hole is formed in a corner portion on at least one of the bottom wall side and the upper wall side of the prismatic pipe. It is characterized by.

  The invention according to claim 2 is characterized in that the drain hole is formed in an inclined shape from the side wall of the prismatic pipe to the bottom wall or the top wall with the bending point of the corner portion as the center.

  The invention described in claim 3 is characterized in that the drain holes are respectively formed at both corners on the diagonal of the bottom wall side and the top wall side of the prismatic pipe.

  The invention according to claim 4 is a method in which both sides are disposed along the front-rear direction between the pillars erected at the four corners and the lower parts of the left and right pillars on the front side and the lower parts of the left and right pillars on the rear side. In a support shelf comprising a crosspiece member and a rear side crosspiece member disposed laterally between the lower portions of the rear support columns, at least the both side crosspiece members and the rear side crosspiece member In addition, it is characterized in that it is formed by an internal hollow prismatic pipe and a drain hole is formed at a corner on a diagonal line on at least one of the bottom wall side and the upper wall side of the prism pipe.

  According to a fifth aspect of the present invention, the drain hole is formed in an inclined shape from one side wall of the prismatic pipe to the bottom wall or from the other side wall to the upper wall with the bending point of the corner portion as the center. It is a feature.

  The invention described in claim 6 is characterized in that the drain holes are respectively formed at both corners on the diagonal of the bottom wall side and the top wall side of the prismatic pipe.

  The invention according to claim 7 is characterized in that the prismatic pipe is formed of an iron-based metal material or an aluminum alloy material.

  According to the present invention, since the drain hole is formed in the corner of the bottom wall side or the top wall side of the prismatic pipe, even when the bottom wall side of the prismatic pipe is disposed sideways or upward at the time of assembly, Since the drain hole is located on the lower side, the drainage function can be sufficiently exerted.

It is a perspective view of the support shelf provided for 1st Embodiment of this invention. It is a perspective view which shows the drain hole of the right side crosspiece member (rectangular pipe) provided for this embodiment. It is a perspective view which shows the 1st modification of the drain hole of the right side crosspiece member (rectangular pipe) provided for this embodiment. It is a perspective view which shows the 2nd modification of the drain hole of the right side crosspiece member (square column pipe) provided for this embodiment. It is a perspective view which shows the 3rd modification of the drain hole of the right side crosspiece member (square column pipe) provided for this embodiment. It is a perspective view which shows the drain hole of the right side crosspiece member (square column pipe) provided for 2nd Embodiment of this invention. It is a perspective view which shows the state which piled up the support shelf provided to 1st, 2nd this embodiment in two steps. It is a perspective view which shows the formation position of the drain hole of the conventional prismatic pipe.

  Hereinafter, an embodiment in which the drainage structure of a prismatic pipe according to the present invention is applied to a stackable support shelf that supports a pallet will be described in detail with reference to the drawings.

  As shown in FIG. 1, the support shelf 1 includes four columns 2 to 5 erected at the four corners, the lower portions of the front left and right columns 2 and 3, and the rear left and right columns 4 and 5. The side bars 6, 7 arranged along the front-rear direction between the lower part of the two and the rear bars arranged along the horizontal direction between the lower edges of the rear columns 4, 5. It is mainly composed of a member 8 and a shelf frame 9 fixed to the upper part of each of the columns 2 to 5, and an opening 11 for accommodating or taking out the pallet 10 therein is formed on both the front columns 2 and 3 side. Yes. Note that there is no shelf frame in the lower part on the inside, and the pallet 10 is directly placed on the ground.

  In order to reduce the weight, each of the columns 2 to 5 is formed into an internal hollow prismatic shape (rectangular pipe) by bending a plate made of an iron-based metal material, and the cross-sectional shape thereof is formed into a square shape with a square shape. In addition, the front struts 2 and 3 are outside of the rear struts 4 and 5 and the outer side surfaces of the left and right side vertical frame portions 9b and 9b, which will be described later, by the width (W). Is arranged.

  The side bars 6 and 7 are integrally formed by the same molding method as the columns 2 to 5 and are formed in a square shape having a square cross section. The width (W) is disposed outside the rear support columns 4, 5 and the like, and the opposing surfaces of the respective rear end portions are fixed to both end edges of the rear frame member 8 by welding. . On the other hand, the front end edges are respectively disposed on the rear surfaces of the front columns 2 and 3 with a gap of about 30 mm. A blind plate (not shown) for preventing water and the like from entering is attached to the front edge.

  Further, support members 12, 12, 13, and 13 having predetermined lengths are fixed to the front and rear upper surfaces of the side bars 6 and 7 by welding, respectively. The front support members 12 and 12 have front end edges fixed to the rear surfaces of the front support columns 2 and 3 by welding. Accordingly, the front end portions of the side-side crosspiece members 6 and 7 are connected to the front-side columns 2 and 3 via the support members 12 and 12. Further, a step is formed between the side bars 6 and 7 due to the presence of the support members 12 to 13.

  The rear side crosspiece member 8 is formed in the same cross-sectional shape by the same molding method as each of the columns 2 to 5, and is arranged on the same plane as each of the rear columns 4 and 5, and each upper surface of each end portion The lower end edges of the rear columns 4 and 5 are fixed by welding.

  The shelf frame 9 is formed in a lattice shape as a whole, is disposed in the lateral direction between the upper ends of the front columns 2 and 3, and the left and right ends are welded and fixed to the opposing surfaces of the front columns 2 and 3. Between the horizontal frame portion 9a and both end portions of the front horizontal frame portion 9a and the upper end portions of the rear columns 4 and 5, the front and rear end portions are both end portions of the front horizontal frame portion 9a. And both side vertical frame portions 9b, 9b welded and fixed to the upper end edges of the rear support columns 4 and 5, respectively, and the left and right end portions disposed laterally between the rear end portions of the both side vertical frame portions 9b, 9b. Has a rear horizontal frame portion 9c welded and fixed to the upper ends of the rear columns 4 and 5 and the rear end portions of both vertical frame portions 9b and 9b, and a central vertical position fixed in the front-rear direction at the center in the horizontal width direction. It is composed of a frame portion 9d and a pair of central horizontal frame portions 9e, 9e arranged and fixed at the front and rear positions in the vertical width direction, and the whole is formed on a substantially flat shelf. . Further, the shelf frame 9 is set so that the surface area of the entire upper surface thereof is substantially the same as the surface area of the entire lower surface of the pallet 10 placed on the upper surface.

  Reinforcing plates 14 are respectively straddled between the front surface of each upper end portion of the front support columns 2 and 3 and the front surface of the front horizontal frame portion 9a that is flush with the front surface. Each reinforcing plate 14 is formed in a substantially L-shape, and one end portion 14a extending in the vertical direction is fixed to the front surface of each front column 2 and 3 by welding, while the other extending in the horizontal direction. End portions 14b are fixed to the front surfaces of both end portions of the front lateral frame portion 9a by welding.

  Further, an engagement convex portion (not shown) is attached to the lower ends of the front support columns 2 and 3. Each of the engaging projections is formed by integrally forming a metal plate by press molding, and is welded and fixed to the lower end edge of the front support columns 2 and 3, and water that has entered the support columns 2 and 3 at the bottom. A water drain hole (not shown) for discharging the water to the outside is formed.

  Further, in the upper end portions of the front support columns 2 and 3, as shown in FIG. 2, the engagement protrusions of the different support shelves 1 on the stacked upper side, which will be described later, are engaged and locked. Recesses 2a and 3a are provided.

  As shown in FIG. 1, as shown in FIG. 1, the rear surfaces of the upper ends of the rear columns 4, 5, that is, the left and right ends of the side frame portions 9 b and 9 b and the rear frame portion 9 c of the shelf frame 9 are stacked. Stopper plates 15 and 15 for restricting rearward movement of the support shelf 1 are fixed by welding. This stopper plate 15 is bent in a substantially L shape, and is fixed by welding so that the lower side portion 15a closes the upper end opening of each of the rear columns 4 and 5, and the water into each column 4 and 5 is fixed. The upper side portion 15b that rises vertically functions as a stopper. As described above, the stopper plates 15 and 15 are arranged in the rear position so as to avoid the pallet 10 placed above because the surface area of the shelf frame 9 is substantially the same as the surface area of the pallet 10. Has been.

  Further, drain holes 16 as shown in FIG. 2 are formed on the bottom wall sides of the frame portions 9a to 9e of the side frame members 6, 7, the rear frame member 8, and the shelf frame 9, respectively. .

  The drain holes 16 will be described with respect to the right side beam member 6 as a representative prismatic pipe. As shown in FIG. 2, the drain holes 16 are formed at both longitudinal front and rear edges of the right side beam member 6. The corner portion 6c having a small radius of curvature between the bottom wall 6a and the one side wall 6b of the right side beam member 6 is formed in an inclined shape. In other words, with the bending point of the corner 6c as the center P, the bottom wall 6a is cut from the side wall 6b side or from the bottom wall side 6a to the side wall 6b side by, for example, a press molding machine. It is substantially L-shaped across the wall 6a and one side wall 6b.

  Therefore, the drain hole 16 has one end opening 16a formed in the bottom wall 6a and the other end opening 16b formed in the one side wall 6b. The one end opening 16a and the other end opening 16b are on the bottom side. When viewed from one side, it is substantially rectangular.

The drainage hole 16 is formed on the center side in the longitudinal direction in addition to the front and rear end edges of the side bars 6 and 7.
[Usage of support shelf and effect of this embodiment]
In order to use the support shelf 1 having the above structure, it is usually used in a two-stage stack as shown in FIG. 7, for example. At this time, the upper support shelf 1 is lifted in advance by a forklift or the like. The rear side of the shelf 1 is overlapped with the upper part of the lower support shelf 1 from the near side and is slid rearward as it is. That is, both ends of the lower horizontal beam member 8 of the upper support shelf 1 are overlapped on both side frame portions 9b, 9b of the shelf frame 9 of the lower support shelf 1, and the whole is slid rearward as it is. When the rear surfaces of both end portions of the member 8 abut against the upper side portions 15b, 15b of the stopper plates 15, 15 and further movement is restricted, the front side of the upper support shelf 1 is gradually lowered and the both engagements are performed. The convex portions are fitted into the corresponding locking concave portions 2a and 3a, and both are engaged. Thereby, the connection work to the upper support shelf 1 with respect to the lower support shelf 1 is simply completed. Each of the support shelves 1 can be stacked in three stages or more than two stages.

  Next, on the shelf frame 9 of the lower support shelf 1, the pallet 10 on which the luggage is placed and fixed in advance is placed while being positioned by a forklift or the like.

  At this time, a large load of the load on the pallet 10 placed on the upper support shelf 1 and the weight of the upper support shelf 1 acts in the buckling direction on each of the columns 2 to 5 of the lower support shelf 1. However, the front struts 2 and 3 to which particularly large loads are applied are sufficiently reinforced by the reinforcing effect of the reinforcing plates 14 and 14 on the front side. That is, since the reinforcing strength of the front support columns 2 and 3 of the lower support shelf 1 and the upper horizontal frame portion 9a is improved by the reinforcing plates 14 and 14, the overall strength of the lower support shelf 1 is increased. As a result, the upper support shelf 1 can be stably supported.

  In the present embodiment, as described above, the drainage holes 16 are not formed only on the bottom wall of the prismatic pipe as in the prior art, but the corners 6c are notched in an inclined shape. When the constituent members of the support shelf 1 are welded and joined, the circumferential direction of the right side crosspiece member 6 is mistakenly arranged because the bottom wall 6a and the side wall 6c are formed. However, it becomes possible to make the drain hole 16 face downward.

  That is, when the respective constituent members of the support shelf 1 are welded and joined, for example, the circumferential direction of the right side rail member 6 is mistakenly arranged and the bottom wall 6a is disposed on the side and the one side wall 6b is disposed on the bottom. Even in such a case, the one end opening 16a of the drain hole 16 is lateral, but the other end opening 16b is downward, so that rainwater and the like that has entered the right side rail member 6 are located on the bottom side. It can be quickly discharged to the outside from the other end opening 16b of the drain hole 16 along the bottom surface of the one side wall 6b.

  Thereby, even if there is an error in the circumferential direction, the drainage function of the drain hole 16 can be sufficiently exerted.

  Moreover, as shown in FIG. 3, the formation position of the drain hole 16 can also be formed inside both longitudinal edges of the right side crosspiece member 6 and the like.

  If it does in this way, since it can weld to the said both end edges of a member, the joint rigidity by a front and rear edge part and welding will become high with a member.

Furthermore, the punching shape of the drain hole 16 is formed in a circular shape as shown in FIG. 4, so that the one end opening 16a on the bottom wall 6a side and the other end opening 16b on the one side wall 6b side are semicircular, respectively. It can also be shaped. In this case, it is also possible to reduce the opening area of the drain hole 16 and form it only around the bending point P of the corner 6c. Further, as shown in FIG. 5, the drainage hole 16 can be formed in a long rectangular shape from the bottom wall 6a side to the one side wall 6b side.
[Second Embodiment]
FIG. 6 shows a second embodiment of the present invention, in which each drain hole 16 is located on a diagonal line in which the corners 6c of the right side crosspiece member 6 are diagonally shifted from each other or in the longitudinal direction. It is formed at the position.

  More specifically, the drain hole 16 on one side is formed by cutting away from the one side wall 6b to the bottom wall 6a in the same manner as in the first embodiment, but the drain hole on the other side. 17 is formed by cutting away from the other side wall 6d to the upper wall 6e side. That is, a drain hole is formed at a corner 6f that is diagonally opposite to the corner 6c in which the one side drain hole 16 is formed and at the other end edge opposite to the one side drain hole 16 in the longitudinal direction. 17 is formed.

  Therefore, according to this embodiment, the circumferential direction of the right side beam member 6 (rectangular pipe) is not limited to the above-described direction, and the upper wall 6e is the lower side and the other side wall 6d is the lower side direction. Even if it becomes the direction of this, since the one end opening 16a, 17a or the other end opening 16b, 17b of the drain holes 16 and 17 is always directed downward, the drainage function can always be exhibited.

  Also in this embodiment, the shape of the drain hole 17 and the position in the longitudinal direction can be freely selected as in the first embodiment.

  Since the drain holes 16 and 17 can be freely set in size, that is, in the opening area and formation position, it does not affect the rigidity of the prismatic pipe such as the right side beam member 6. Absent.

  The present invention is not limited to the shape, the formation position, the number of formations, and the like of the drain holes 16 in the embodiment, and can be arbitrarily set.

  Further, the cross-sectional shape of the prismatic pipe is not limited to a square as in the right side beam member 6 in the above embodiment, and may be a square or a rectangular shape as long as it is rectangular. good.

  Furthermore, although the said right side crosspiece member 6 was demonstrated in the said each embodiment, it cannot be overemphasized that it is applicable to any thing, as long as it is a member arrange | positioned in the horizontal horizontal direction.

DESCRIPTION OF SYMBOLS 1 ... Support shelf 2, 3 ... Front side support | pillar 4, 5 ... Rear side support | pillar 6,7 ... Both-sides side beam member 6a ... Bottom wall 6b ... One side wall 6c ... Corner | angular part 6d ... Other side wall 8 ... Rear side beam member 9 ... Shelf Frame 10 ... Pallet 16/17 ... Drain hole 16a / 17a ... Opening one end 16b / 17b ... Opening the other end

The invention according to claim 1 is disposed along the front-rear direction between the pillars erected at the four front and rear corners, and the lower parts of the left and right pillars on the front side and the lower parts of the left and right pillars on the rear side. In a support shelf comprising both side crosspiece members and a rear side crosspiece member disposed along the lateral direction between the lower portions of the rear support columns, at least the both side crosspiece members and the rear side crosspiece member Is formed by an internal hollow prismatic pipe, and a drainage hole is formed through at least one of the bent corners of the prismatic pipe .

The invention according to claim 4 is characterized in that the prismatic pipe is formed of an iron-based metal material or an aluminum alloy material .

Claims (7)

In the drainage structure of the internal hollow prismatic pipe,
A drainage structure for a prismatic pipe, wherein a drainage hole is formed through at least one of the bent corners of the prismatic pipe. The prismatic pipe is formed into a quadrangular cross section, and
2. The drainage hole according to claim 1, wherein the drain hole is formed in an inclined shape from one side wall to the bottom wall or from the other side wall to the top wall with the bending point of the corner portion as a center. Water drainage structure for prismatic pipes.   The drainage structure for a prismatic pipe according to claim 2, wherein the drainage holes are formed in both corners on the diagonal line on the bottom wall side and the upper wall side of the prismatic pipe. Columns arranged upright at the four corners, both side rail members disposed along the front-rear direction between the lower portions of the front left and right columns and the rear left and right columns; In a support shelf provided with a rear frame member disposed along the lateral direction between the lower portions of the columns,
At least the side beam members and the rear beam members are formed by hollow prismatic pipes, and water is drained from at least one of the bent corners of the prismatic pipes. A support shelf using a prismatic pipe characterized by forming a hole therethrough. The prismatic pipe is formed into a quadrangular cross section, and
5. The drain hole is formed in an inclined shape from one side wall to the bottom wall of the prismatic pipe or from the other side wall to the upper wall with a bending point of the corner portion as a center. Support shelf using prismatic pipes.   6. The support shelf using prismatic pipes according to claim 5, wherein the drain holes are formed at both corners on the diagonal of the bottom wall side and the top wall side of the prismatic pipe.   The support shelf using the prismatic pipe according to any one of claims 1 to 6, wherein the prismatic pipe is formed of an iron-based metal material or an aluminum alloy material.

Images