JP5303512B2 - Plastic pallet - Google Patents

Description

  The present invention relates to a synthetic resin pallet used for storage, transportation and conveyance of luggage, and more particularly to a synthetic resin pallet manufactured by welding two skids.

  Conventionally, a synthetic resin pallet manufactured by welding two skids of the same shape is known. However, when a skid girder (two skids are welded, Reinforcing ribs that extend from the deck to the welding surface are formed on the part that forms half of the girder. When two skids are welded, the reinforcing ribs of one skid and the other The reinforcing rib portion of the skid is also welded, and the reinforcing rib for connecting the opposing decks of the synthetic resin pallet is formed in the girders of the synthetic resin pallet. A synthetic resin pallet manufactured by welding two skids having such a configuration is disclosed in Patent Document 1 and Patent Document 2 as an example.

Japanese Patent No. 2922819

JP 2006-341856 A

  In the synthetic resin pallet disclosed in Patent Document 1 described above, when two skids are welded, the reinforcing rib formed by the reinforcing rib portion formed on the skid extends over the entire height of the girder. In other words, in other words, since the reinforcing ribs are extended to connect the opposite decks of the synthetic resin pallet, the weight of the synthetic resin pallet that is required to be reduced in weight in recent years. There was a problem of increasing. Further, when viewed from the mold surface, in order to mold the reinforcing rib portion extending from the deck to the welding surface, the mold portion for molding the reinforcing rib portion is thinned. Therefore, the durability of the mold is reduced. There was a problem of getting worse.

  In addition, in Patent Document 2 described above, a skid configured to divide a conventional reinforcing rib portion that connects a rib in the spar parallel to the fork insertion port and a spar spar side wall for weight reduction. However, with this construction, when a synthetic resin pallet is manufactured, the load concentrates on the remaining reinforcing ribs welded to each other, and this part of the deck is damaged, whitened, and synthesized. There is a problem that the appearance of the resin pallet is deteriorated and the elasticity and strength of the synthetic resin pallet are lowered.

  An object of the present invention is to solve the problems of the above-described conventional synthetic resin pallet.

  In order to achieve the above-mentioned object, the present invention provides a synthetic resin pallet having a side girder and a central girder manufactured by welding two skids. First, the side of the skid A vertical plate-like portion extending from the deck plate-like portion to the welding surface and a vertical tip of the vertical plate-like portion on the fork insertion-portion-side peripheral wall portion of the girder portion and the fork insertion-portion-side peripheral wall portion of the central girder portion A reinforcing rib member comprising an arcuate plate-like portion connecting the lower portions of the skid is formed, and secondly, a semi-cylindrical full height reinforcement formed on the outer peripheral wall portion of the side girder portion constituting the skid. A rib and the reinforcing rib member facing the semi-cylindrical full height reinforcing rib are connected by a connecting rib. Third, the opposing reinforcing rib member formed in the center beam is connected. They are connected by ribs.

  In a synthetic resin pallet having a side girder and a central girder manufactured by welding two skids, a fork insertion port side peripheral wall portion of the side girder portion of the skid and a fork opposed to the central girder portion A reinforcing rib member comprising a vertical flat plate-like portion extending from the deck plate-like portion to the welding surface and an arc-like plate-like portion connecting the lower portion of the vertical tip of the vertical flat plate-like portion is formed on the peripheral wall portion on the insertion port side. Therefore, the reinforcing rib member can reduce the weight of the skid as compared with the conventional reinforcing rib member that extends from the deck plate-like portion to the welding surface, in other words, the total height of the skid. The made pallet itself can be reduced in weight.

  Further, in the synthetic resin pallet having a side girder and a center girder manufactured by welding two skids, relative to the fork insertion port side peripheral wall portion and the center girder portion of the side girder portion of the skid A reinforcing rib member comprising a vertical flat plate portion extending from the deck plate-like portion to the welding surface and an arc-like plate-like portion connecting the lower portion of the vertical tip of the vertical flat plate portion to the peripheral wall portion on the fork insertion opening side Thus, the strength and cooling efficiency of the mold for molding the reinforcing rib member can be increased.

  Furthermore, in the synthetic resin pallet having a side girder and a central girder manufactured by welding two skids, relative to the fork insertion port side peripheral wall portion and the central girder portion of the side girder portion of the skid A reinforcing rib member comprising a vertical flat plate portion extending from the deck plate-like portion to the welding surface and an arc-like plate-like portion connecting the lower portion of the vertical tip of the vertical flat plate portion to the peripheral wall portion on the fork insertion opening side Since the load applied to the side girders and center girders of the synthetic resin pallet can be distributed by the arc-shaped plate portion through the opposing vertical flat plate portion, the synthetic resin pallet Strength and rigidity can be increased.

  Since the semi-cylindrical full-height reinforcing rib formed on the outer peripheral wall portion of the side spar constituting the skid and the reinforcing rib member facing the semi-cylindrical full-height reinforcing rib are connected by the connecting rib, the reinforcing rib member The strength and rigidity of the pallet made of synthetic resin can be increased.

FIG. 1 is an overall perspective view of the synthetic resin pallet of the present invention. FIG. 2 is a perspective view of a skid constituting the synthetic resin pallet of the present invention. FIG. 3 is a partially enlarged perspective view of a skid constituting the synthetic resin pallet of the present invention. FIG. 4 is also a partially enlarged perspective view of a skid constituting the synthetic resin pallet of the present invention.

  The synthetic resin pallet P of the present invention is a so-called welding pallet manufactured by welding two identically shaped skids S as shown in FIG. By welding, the opposite side beam p1 and the central beam p2 located between the opposite side beam p1 are formed, and two forks are provided between the opposite side beam p1 and the central beam p2. A so-called two-way synthetic resin pallet P in which the insertion port p3 is formed is manufactured.

  Next, the overall configuration of the skid S will be described with reference to FIG.

  The skid S has a cylindrical side girder S1 that forms approximately half the height of the side girder p1 and a central part of the opposing side girder S1 that forms substantially half of the central girder p2. Is formed of a cylindrical central girder part S2 and a deck part S3 that forms a counter deck p4 of the synthetic resin pallet P, and between the side girder part S1 and the central girder part S2. Is formed with a fork insertion opening S4 having a height approximately half that of the fork insertion opening p3. In addition, the skid S has a deck plate-like portion s1 that constitutes a placement surface of a load placed on the synthetic resin pallet P.

  The side girder S1 has a substantially rectangular peripheral wall 1. The peripheral wall 1 includes a fork insertion port side peripheral wall 1a located on the fork insertion port S4 side, and the fork insertion port side peripheral wall 1a. The outer peripheral wall portion 1b facing each other, and the opposite connecting short side portion 1c connecting both ends of the fork insertion port side peripheral wall portion 1a and the outer peripheral wall portion 1b.

  The central girder S2 has a substantially rectangular peripheral wall 2, and the peripheral wall 2 is located on the fork insertion port S4 side, facing fork insertion port side peripheral wall 2a, and the opposing fork insertion. It is comprised from the opposing connection short side part 2b which connects the both ends of the opening part side surrounding wall part 2a.

  A synthetic resin pallet P is formed on the outer peripheral wall 1b of the side girder S1 described above from the welding surface s2 of the skid S along the inner surface 1b1 of the outer peripheral wall 1b and perpendicular to the outer peripheral wall 1b. A semi-cylindrical reinforcing rib (hereinafter referred to as a semi-cylindrical full height reinforcing rib) 3 extending to the deck plate-like portion s1 constituting the deck p4 is formed. By forming such a semi-cylindrical full height reinforcing rib 3, it is possible to prevent damage due to an impact or load applied to the side beam p1 of the synthetic resin pallet P.

  In addition, the fork insertion port side peripheral wall portion 1a of the side spar portion S1 and the corner portion formed by the deck plate portion s1 positioned in the side spar portion S1 and the fork insertion of the central spar portion S2 are opposed to each other. Reinforcing rib members 4 as shown in FIGS. 3 and 4 are formed at the corners where the mouth side peripheral wall portion 2a and the deck plate portion s1 located in the central beam portion S2 are formed. Yes. Hereinafter, the reinforcing rib member 4 formed on the fork insertion port side peripheral wall portion 1a of the side girder portion S1 will be described, but the fork insertion port side peripheral wall portion 2a of the central girder portion S2 is formed. Since the reinforcing rib member 4 is the same, the reinforcing rib member 4 formed on the fork insertion port side peripheral wall portion 1a of the side beam portion S1 will be described below.

  The reinforcing rib member 4 is separated from the fork insertion port side peripheral wall portion 1a of the side beam portion S1 by a fork insertion port side peripheral wall portion 1a and the deck plate-like portion s1 at a predetermined interval. It is formed in the corner to be formed.

  The reinforcing rib member 4 is an arcuate plate that connects a substantially vertically long vertical flat plate portion 4a that extends from the deck plate portion s1 to the welding surface s2 and a lower portion of the vertical tip 4a1 of the vertical plate portion 4a. The lower end of the arcuate plate-like portion 4b is connected to the deck plate-like portion s1. Further, the upper end of the arcuate plate-like portion 4b includes an inclined portion 4b1 inclined downward and a horizontal portion 4b2 positioned between the opposite inclined portions 4b1 from the vertical tip 4a1 of the opposite vertical flat plate-like portion 4a. Have.

  Reference numeral 5 denotes a long side partition rib extending from the deck plate-like portion s1 located in the side beam portion S1 to the welding surface s2 along the long side direction of the side beam portion S1, and 6 is a side rib. A short-side direction dividing rib extending from the deck plate-like portion s1 located in the side beam portion S1 to the welding surface s2 along the short side direction of the beam portion S1. In the present embodiment, an example is shown in which one long-side partition rib 5 is formed at the center of the side beam portion S1 and five short-side partition ribs 6 are formed. In addition, the number of the long side direction division rib 5 and the short side direction division rib 6 can be set suitably.

  Also in the central girder part S2, long side direction partitioning ribs 7 extending from the deck plate-like part s1 located in the central girder part S2 to the welding surface s2 are formed along the long side direction of the central girder part S2. In addition, short side direction partition ribs 8 extending from the deck plate-like portion s1 located in the central beam portion S2 to the welding surface s2 are formed along the short side direction of the central beam portion S2. Moreover, the skid S can be reduced in weight by forming the notch recessed part 8a in the center part of some short side direction division ribs 8. FIG. In the present embodiment, an example is shown in which two long-side partition ribs 7 are formed in the central beam portion S2 and five short-side partition ribs 8 are formed. In addition, the number of the long side direction division rib 7 and the short side direction division rib 8 can be set suitably.

  The semi-cylindrical full height reinforcing rib 3 formed on the outer peripheral wall portion 1b of the side girder portion S1 and the reinforcing rib member 4 formed on the fork insertion port side peripheral wall portion 1a of the side girder portion S1 face each other. The reinforcing rib members 4 respectively formed on the fork insertion port side peripheral wall portion 2a facing the central beam portion S2 are arranged so as to face each other. Further, the semicylindrical full height reinforcing rib 3 and the reinforcing rib member 4 arranged so as to face each other in the side beam portion S1 are connected by a connecting rib 9 connected to the deck plate-like portion s1. Further, the opposing reinforcing rib members 4 arranged so as to face each other in the central beam portion S2 are also connected by the same connecting rib 9 connected to the deck plate-like portion s1.

  As described above, the fork insertion port side peripheral wall portion 1a of the side girder portion S1 and the opposing fork insertion port side peripheral wall portion 2a of the central girder portion S2 extend from the deck plate-like portion s1 to the welding surface s2. By forming the reinforcing rib member 4 composed of the vertical flat plate-like portion 4a and the arc-like plate-like portion 4b connecting the lower portion of the vertical tip 4a1 of the vertical flat plate-like portion 4a, the reinforcing rib member has an overall height of the skid S, In other words, the skid S can be reduced in weight compared to the conventional reinforcing rib member extending from the deck plate-like portion s1 to the welding surface s2, and consequently the synthetic resin pallet P itself can be reduced in weight. Can do.

  Moreover, the vertical plate shape extended from the deck plate-shaped part s1 to the welding surface s2 to the fork insertion port side peripheral wall part 1a of the side girder part S1 and the fork insertion port side peripheral wall part 2a of the central girder part S2. By forming the reinforcing rib member 4 composed of the portion 4a and the arcuate plate-like portion 4b connecting the lower portion of the vertical tip 4a1 of the vertical flat plate-like portion 4a, the strength and cooling of the mold for molding the reinforcing rib member 4 Efficiency can be increased.

  Furthermore, in the synthetic resin pallet P manufactured by welding the skid S as described above, the side girders p1 of the synthetic resin pallet P formed by the peripheral wall 1 of the side girders S1 constituting the skid S, When a load is applied to the central girder p2 of the synthetic resin pallet P formed by the peripheral wall 2 of the central girder p2 constituting the skid S, such a load is passed through the opposing vertical flat plate-like portion 4a. Since it is dispersed by the arc-shaped plate-like portion 4b that is not directly applied, the strength and rigidity of the synthetic resin pallet P can be increased.

  Furthermore, the semicylindrical full height reinforcing rib 3 and the reinforcing rib member 4 arranged so as to face each other in the side beam portion S1 are connected by the connecting rib 9 connected to the deck plate-like portion s1. Further, the reinforcing rib members 4 arranged so as to face each other in the central girder portion S2 are connected by the similar connecting ribs 9 connected to the deck plate-like portion s1, thereby reinforcing the reinforcement. The strength and rigidity of the rib member 4 can be increased, and consequently the strength and rigidity of the synthetic resin pallet P can be increased.

  In addition, although the Example of this invention was demonstrated to the Example mentioned above for the example of the two-way synthetic resin pallet P, this invention can also be applied to a four-way synthetic resin pallet. That is, the present invention includes a corner girder formed at the corner of the four-way synthetic resin pallet, an intermediate girder located at the middle of the corner girder, and a central girder located at the center of the synthetic resin pallet, respectively. Can also be applied.

P ········································································································ Semi-cylindrical full height reinforcing rib ············· Reinforcement rib member 4a ········································································ ... Connecting ribs

Claims (3)

  In a synthetic resin pallet having a side girder and a central girder manufactured by welding two skids, a fork insertion port side peripheral wall portion of the side girder portion of the skid and a fork opposed to the central girder portion A reinforcing rib member comprising a vertical flat plate-like portion extending from the deck plate-like portion to the welding surface and an arc-like plate-like portion connecting the lower portion of the vertical front end of the vertical flat plate-like portion is formed on the peripheral wall portion of the insertion opening. Synthetic resin pallet characterized by being made.   The semicylindrical full height reinforcing rib formed on the outer peripheral wall portion of the side spar constituting the skid and the reinforcing rib member facing the semicylindrical full height reinforcing rib are connected by a connecting rib. The synthetic resin pallet according to claim 1.   The synthetic resin pallet according to claim 1 or 2, wherein the opposing reinforcing rib members formed in the central girder are connected by a connecting rib.

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