JP4890494B2 - Equipment storage shelf pallet drop prevention device - Google Patents

Description

  The present invention, for example, when placing and storing a pallet on which an article is placed on each shelf part of an article storage shelf juxtaposed in a warehouse using a forklift or the like, the pallet is caused by other vibrations such as an earthquake. Further, the present invention relates to a pallet drop prevention device for an article storage shelf for preventing the product from falling.

  The article storage shelf is composed of a plurality of vertical frames erected at a predetermined interval and a shelf portion that is bridged between the vertical frames. The shelf is set at a predetermined height position between the front and rear of the vertical frames, and the front and rear horizontal beams are spanned and the front and rear horizontal beams are spanned at predetermined intervals. The pallet on which various articles are placed can be loaded and unloaded by the horizontal beam serving as a loading / unloading port using a forklift or the like.

  However, since a pallet placed on such an article storage shelf may fall downward from the side beam side serving as a carry-in / carry-out port, for example, due to an earthquake or the like, for example, conventionally, for example, Patent Document 1 Is used to prevent the pallet from falling. In this fall prevention device, a rear beam is horizontally mounted at a predetermined height on the rear end side of the shelf portion, and on the front end side of the shelf portion, it is dropped via a vertically long bracket fixed to each of the left and right vertical frames. The prevention bar is hooked at a predetermined height position in front of the shelf.

That is, the bracket is formed with a vertically long slide long hole on both opposite side surfaces of the U-shaped frame member, and the upper end of the slide long hole is folded back into a U shape to form a retaining hole. Both ends of the strip plate-shaped or bar-shaped fall prevention bar are inserted into the slide long hole so as to be movable up and down. When using a forklift to place an article on the article storage shelf together with the pallet, After dropping into the lower end of the slide long hole of the bracket and placing the article on the article storage shelf, the fall prevention bar is attached to the retaining hole at the upper end of the slide long hole of the bracket. In this way, the fall prevention bar is held at a predetermined height, and by holding down the article placed on the article storage shelf, the article or the like is prevented from dropping due to vibrations such as an earthquake. Yes.
JP 2005-52603 A

  However, in the conventional apparatus as shown in Patent Document 1, a worker who operates a forklift when a pallet on which an article is placed is carried into or out of an article storage shelf using a forklift. However, the forklift forklift is moved up and down before and after the loading / unloading work, or another worker needs to manually raise and lower the fall prevention bar manually. Yes.

  In addition, the conventional apparatus has a problem that the manufacturing cost of the article storage shelf itself is increased due to the troublesome configuration of installing many members such as the back beam, bracket, and fall prevention bar. It was.

  Therefore, the present invention was created in view of the conventional circumstances as described above, and the guard plate for preventing the fall of the pallet is simply placed on the article storage shelf with a forklift. The guard plate can be protruded downward by protruding the horizontal beam at the front position, and the pallet can be taken out and carried out, eliminating the troublesome work of raising and lowering the fall prevention bar manually etc. An object of the present invention is to provide a pallet drop prevention device for an article storage shelf with a simple structure and low manufacturing cost.

In order to solve the above-described problems, in the present invention, the bracket 2 having an upper opening attached to the lateral beam B forming the front surface of the shelf of the article storage shelf R, and the bracket 2 from the lateral beam B to the bracket 2. A swing lever 7 that is L-shaped with both ends reversed, and a guard plate 10 that is fixed to one L-shaped portion of the swing lever 7 and swings up and down at the upper opening of the bracket 2; The guard plate 10 can be projected and retracted from the upper opening of the bracket 2 by a pallet P load applied to the other L-shaped portion of the swing lever 7 protruding upward from the lateral beam B.
The guard plate 10 and the guard plate 10 can be retracted to the inside of the bracket 2 by releasing the load of the pallet P applied to the L-shaped portion of the other end of the swing lever 7 so that the guard plate 10 can be retreated in the bracket 2 by its own weight. The mounting angle can be set to 43 °.
Further, the guard plate 10 has a cut shaft portion 8 formed by cutting the upper and lower portions at an angular position of 43 ° with respect to the central swing rod 7a of the swing lever 7 at one end L-shaped portion of the swing lever 7. It is possible to insert and fix the key hole 11 formed at the end of the plate 10.
Specifically, the planar U-shaped bracket 2 having an upper opening attached to the transverse beam B forming the front of the shelf of the article storage shelf R and the opposite ends of the central swing bar 7a are opposite to each other. An L-shaped shaft portion 7b, 7c that is oriented, and is fixed to a swing lever 7 inserted through the bracket 2 from the transverse beam B, and one end L-shaped portion 7b of the swing lever 7, 2 and a guard plate 10 that swings up and down along the outer surface of the transverse beam B. The guard plate 10 protrudes upward from the transverse beam B inside the transverse beam B. The pallet P load applied to the other end L-shaped portion 7c of the swing lever 7 can be projected and retracted from the upper opening of the bracket 2, and the bracket 2 contacts the outer side surface of the lateral beam B with the side surfaces 2b on both the left and right sides. Lower left end of the central wall 2a The bolts 3a and 3b inserted on the upper right side are screwed into the horizontal beam B to be fastened to the horizontal beam B, and the swing lever 7 is positioned at the position of the bolt 3b inserted on the upper right end of the central wall surface 2a of the bracket 2. The end portion of the bracket 2 is fixed to the end of the L-shaped shaft portion 7c by fixing the guard plate 10 to the end of the L-shaped shaft portion 7c. The lower edge of the front end of the guard plate 10 that is inserted into the central wall surface portion 2a and that is inserted into the lower left end of the central wall surface portion 2a of the bracket 2 and screwed into the bracket 2 and swings downward into the bracket 2 It is a stopper that locks the portion.

In the pallet drop prevention device for an article storage shelf according to the present invention configured as described above, when the pallet P on which the article Q is placed is placed on the article storage shelf R by a forklift or the like, from the inside of the lateral beam B When the pallet P load is applied to the other L-shaped portion of the swing lever 7 projecting obliquely upward, the swing lever 7 is swung at a depression angle.
At the same time, the guard plate 10 protrudes obliquely from the upper opening of the bracket 2 and is disposed opposite to the side surface of the pallet P. The guard plate 10 protruding in this manner makes it possible to prevent the pallet P from falling off the article storage shelf R.
Further, when the pallet P on which the article Q is placed is lifted from the article storage shelf R by a forklift, the other end L-shaped portion of the swing lever 7 that has been swung at the inner side of the transverse beam B is from the load on the pallet P. To be released.
At this time, the swing lever 7 is swung to the original elevation position by its own weight, and at the same time, the guard plate 10 is retracted and swung inward from the upper opening of the bracket 2. The pallet P can be unloaded from the article storage rack R by such retreat of the guard plate 10.

  According to the present invention, the pallet P on which the article Q is placed is placed on the article storage shelf R with a forklift or the like, so that the guard plate 10 for preventing the pallet P from falling is protruded above the lateral beam B to hold the pallet P. In addition, the pallet P can be taken out without being obstructed by the guard plate 10 simply by lifting the pallet P, and the pallet P can be carried out without being obstructed by the guard plate 10. Is not required, and the manufacturing cost is not required due to the simple configuration.

  That is, this is because the present invention includes a bracket 2 of a transverse beam B that forms the front surface of the shelf of the article storage shelf R, a swing lever 7 inserted through the bracket 2 from the transverse beam B, and one end of the swing lever 7. Each guard plate 10 is fixed to the L-shaped portion and swings up and down. The guard plate 10 is caused by a pallet P load applied to the other end L-shaped portion of the swing lever 7 protruding upward from the lateral beam B. This is because it can be projected and retracted from the upper opening of the bracket 2. Thus, when the pallet P on which the article Q is placed is placed on the article storage shelf R by a forklift, the pallet is placed on the other end L-shaped portion of the swing lever 7 protruding obliquely upward inside the transverse beam B. When the rocking lever 7 is swung at a negative angle by applying a P load, the guard plate 10 is projected obliquely from the upper opening of the bracket 2 at the same time, and is disposed opposite to the side surface of the pallet P. The drop of the pallet P from the storage shelf R can be reliably prevented by the guard plate 10.

  On the other hand, when the pallet P on which the article Q is placed is lifted from the article storage shelf R by a forklift or the like, the other end L-shaped portion of the swing lever 7 that is swung at the inner side of the transverse beam B is the pallet P. At the same time, the guard plate 10 is retreated and swung inward from the upper opening of the bracket 2 by its own weight, so that the pallet P from the article storage shelf R is not obstructed by the guard plate 10. Unloading work can be done easily.

  In addition, the guard plate 10 and the guard plate 10 can be retracted to the inside of the bracket 2 by releasing the pallet P load applied to the other L-shaped portion of the swing lever 7 so that the guard plate 10 can be retreated into the bracket 2 by its own weight. Since the mounting angle with the plate 10 is 43 °, the guard plate 10 can be always retracted inside the bracket 2 when the pallet P on which the item Q is placed is not placed on the item storage shelf R. Thereby, the work of carrying the pallet P into the article storage shelf R can be easily performed without being obstructed by the guard plate 10.

  Further, the guard plate 10 includes a cut shaft portion 8 formed by cutting the upper and lower portions at an angular position of 43 ° with respect to the central swing rod 7a of the swing lever 7 at one end L-shaped portion of the swing lever 7. Since it is inserted and fixed in the key hole 11 formed at the end of the plate 10, the guard plate 10 is left to its own weight by releasing the pallet P load on the other end L-shaped portion of the swing lever 7. It is possible to configure the mechanism that can be retracted easily and reliably.

  Note that the reference numerals added in the means for solving the above-described problems and the effects of the invention are given for easy reference to the parts showing the components shown in the drawings. The present invention is not limited to the structure / shape indicated by the reference numeral.

  The best mode for carrying out the present invention will be described below with reference to the drawings. The symbol R shown in the drawing is such that the pallet P is placed on the shelf together with the article Q so that the pallet P on which the article Q is placed is transported by a forklift (not shown) and stored in a warehouse. An article storage shelf called a pallet rack. As shown in FIG. 1, the article storage shelf R has, for example, a pair of front and rear horizontal beams B that form a shelf portion between two vertical frames F on the left and right sides, for example, in two vertical stages. It is built. And the shelf part which can mount the pallet P which loaded various articles | goods Q by spanning the deck channel D at equal intervals between these front and back horizontal beams B is comprised. It should be noted that the configuration of each part of the article storage rack R does not restrict the present invention, and is merely an example in the present embodiment.

  And the pallet fall prevention apparatus 1 which concerns on this invention is provided in the front side surface of the horizontal beam B located in the front surface of a shelf part for every space | interval corresponding to the mounting position of the pallet P. As shown in FIG. In addition, the rear beam 15 facing the opposite side is provided with a rear guard 15 made up of an upside-down L-shaped plate at a position substantially corresponding to the position where the pallet drop prevention device 1 is attached. Is placed on the article storage shelf R, the pallet P is positioned on the shelf by pushing the pallet P to the position of the rear guard 15.

  That is, as shown in FIGS. 2 (a), 3 (a), and 3 (b), the pallet drop prevention device 1 includes a horizontally long plate-like central wall surface portion 2a and left and right side surface portions 2b. The end face of the side face 2b of the U-shaped frame-shaped bracket 2 provided is brought into contact with the outer face of the transverse beam B, the bolt holes formed on the lower left side and the upper right side of the central wall part 2a, and the bolt The left and right bolts 3a and 3b are inserted into the bolt holes formed in the transverse beam B so as to face the holes, and the nuts 4 are screwed into the ends of the bolts 3a and 3b protruding from the opposite side to be fastened. The bracket 2 is fixed to the transverse beam B in a state where the opening is directed up and down between the outer surface of B and the central wall surface 2 a of the bracket 2.

  Further, as shown in FIGS. 3B and 4, a shaft hole 5 is provided on the inner side with respect to the bolt hole position on the upper right end of the central wall surface portion 2 a of the bracket 2 and slightly above the bolt hole position. At the same time, a shaft hole 6 is provided in the transverse beam B corresponding to the shaft hole 5. In addition, one end L-shaped shaft portion 7b of the swing lever 7 including L-shaped shaft portions 7b and 7c opposite to each other is inserted into the shaft holes 5 and 6 at both ends of the central swing rod 7a. .

  Further, at the tip end side of the L-shaped shaft portion 7b at one end of the swing lever 7, a vertically symmetrical portion is cut out in a substantially D-cut shape at a predetermined angle with respect to the direction of the center swing rod 7a, for example, at an angle position of 43 °. In addition, a cut shaft portion 8 formed by forming a screw groove on the peripheral surface is formed. Then, a guard plate 10 made of, for example, a steel plate material having a locking point 9 formed by appropriately dropping the apex of a right triangle at the tip into a rounded shape is disposed in the bracket 2 and slightly above the end of the bracket 2. Is inserted into the key hole 11 formed through the hex nut-like spacer 12 screwed into the thread groove at the tip of the L-shaped shaft portion 7b inserted into the shaft hole 6 of the transverse beam B. . Then, another hexagonal nut-like spacer 13 is screwed into the tip of the one end L-shaped shaft portion 7b of the cut shaft portion 8 and is inserted into the shaft hole 5 in the central wall surface portion 2a of the bracket 2. The tip end of the cut shaft portion 8 protruding outside the central wall surface portion 2 a is covered with a cap 14. At this time, the guard plate 10 is positioned by being screwed and fixed with spacers 12 and 13 such as nuts from both sides, and plays a role of preventing the guard plate 10 itself from falling.

  Thus, the guard plate 10 swings in the vertical direction at the upper opening of the bracket 2 by the swing of the swing lever 7. At this time, as shown in FIG. 3 (c), the bolt 3b on the right end side for fixing the bracket 2 to the transverse beam B causes the guard plate 10 that protrudes up and down inside and outside the bracket 2 to be inclined at an angle of about 43 °. It plays a role as a stopper for locking the end edge.

  On the other hand, as shown in FIG. 3 (a), the bolt 3a on the left end side receives and holds the lower edge portion of the locking pointed end portion 9 of the guard plate 10 that retreats and swings downward into the bracket 2 from below. To act as a stopper for.

  As shown in FIGS. 2 (a) and 3 (a), when the pallet P load is not applied to the other end L-shaped shaft portion 7c of the swing lever 7, the guard plate 10 is moved into the bracket 2 by its own weight. The swing lever 7 is arranged so as to protrude obliquely upward inside the lateral beam B.

  On the other hand, as shown in FIGS. 2 (b) and 3 (c), when the pallet P load is applied to the other end L-shaped shaft portion 7 c of the swing lever 7, the guard plate 10 is positioned on the upper side of the bracket 2. For example, the protrusion is swung from the opening to an inclination angle position of about 43 °, for example. At this time, the guard plate 10 is disposed so that the upper inclined portion of the right-angled triangular locking point 9 is substantially parallel to the transverse beam B and the lower inclined portion is substantially perpendicular to the transverse beam B.

  Next, an example of use of the best mode configured as described above will be described. First, the article Q is placed on the pallet P, and the pallet P is placed on the article storage shelf R by using a forklift (not shown). At this time, the pallet P is pushed so as to hit the rear guard 15. Positioned. Then, as shown in FIGS. 2 (b) and 3 (c), the pallet P load is applied to the other end L-shaped shaft portion 7c of the oscillating lever 7, thereby causing the oscillating lever 7 to swing at a depression angle. The guard plate 10 is swung from the upper opening of the bracket 2 to a tilt angle position of about 43 ° and protrudes. Since the guard plate 10 is thus arranged opposite to the side surface of the pallet P, the guard plate 10 prevents the pallet P from dropping from the article storage shelf R due to vibration such as an earthquake or other external force (FIG. 1). reference).

  Further, when the pallet P loaded with the article Q is lifted by using a forklift (not shown) in order to carry the pallet P from the article storage shelf R, the swinging that has been swung at the inner side of the transverse beam B is performed. The other end L-shaped shaft portion 7c of the lever 7 is released from the pallet P load. Then, as shown in FIGS. 2 (a) and 3 (a), the guard plate 10 is retracted and swung inward from the upper opening of the bracket 2 by its own weight, and at the same time, the swing lever 7 is moved back to the original position. It is swung to the elevation position. Thus, the pallet P can be unloaded from the article storage shelf R by retracting the guard plate 10 into the bracket 2.

It is a perspective view which shows the use condition of the goods storage shelf provided with the pallet fall prevention apparatus in the best form for implementing this invention. Similarly, the operation of the pallet drop prevention device will be described. (A) is a perspective view of the pallet drop prevention device showing a state before the pallet is placed on the article storage shelf, and (b) is a pallet placed on the article storage shelf. It is a perspective view of the pallet fall prevention apparatus which shows a state. Similarly, the operation of the pallet drop prevention device will be described, wherein (a) is a front view of the pallet drop prevention device showing a state before the pallet is placed on the article storage shelf, and (b) is an XX portion of (a). (C) is a front view of the pallet fall prevention apparatus which shows the state which mounted the pallet on the article | item storage shelf. It is a general | schematic disassembled perspective view of a pallet fall prevention apparatus similarly.

Explanation of symbols

Q ... Article P ... Pallet R ... Article storage shelf F ... Vertical frame B ... Horizontal beam D ... Deck channel 1 ... Pallet drop prevention device 2 ... Bracket 2a ... Central wall surface portion 2b ... Side surface portions 3a, 3b ... Bolt 4 ... Nut 5 , 6 ... Shaft hole 7 ... Swing lever 7a ... Center swing bar 7b, 7c ... L-shaped shaft part 8 ... Cut shaft part 9 ... Locking point 10 ... Guard plate 11 ... Key hole 12, 13 ... Spacer 14 ... Cap 15 ... Rear guard

Claims (3)

A planar U-shaped frame-shaped bracket having an upper opening attached to a horizontal beam forming the front surface of the shelf of the article storage shelf, and L-shaped shaft portions opposite to each other at both ends of the central swing bar. Te, a rocking lever which has inserted through to the bracket from the side beam, is fixed to one end L-shaped portion of the該揺Do lever, the upper opening of the bracket, which swings up and down along the outer surface of the lateral beam and a guard plate, said guard plate, inside the transverse beam, and retractable from the upper opening of the bracket by the pallet load applied from the side beam to the other L-shaped portion of the swing lever that protrudes upward Ri Na The bracket has the left and right side surface end surfaces in contact with the outer side surface of the horizontal beam, and bolts inserted respectively at the lower left side and the upper right side of the central wall surface are screwed into the horizontal beam and fastened to the horizontal beam. The moving lever At the inner side and slightly above the position of the bolt inserted at the upper right end of the central wall surface of the bracket, the guard plate is inserted into the transverse beam by an L-shaped shaft at one end. And a bolt inserted into the lower left end of the central wall surface of the bracket and screwed into the bracket. pallet fall prevention device of the article storage rack, characterized that you have a stopper locking the tip lower edge portion.   The guard plate has a mounting angle of 43 ° between the swing lever and the guard plate so that the pallet load applied to the other L-shaped part of the swing lever can be retreated into the bracket by leaving the guard plate to its own weight. The pallet drop prevention device for an article storage shelf according to claim 1.   The guard plate is formed at the end of the guard plate at the end of the guard plate with the L-shaped part at one end of the rocking lever cut and formed at an angular position of 43 ° with respect to the central rocking bar of the rocking lever. The pallet drop prevention device for an article storage shelf according to claim 2, wherein the apparatus is inserted into and fixed to the key hole.

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