JP4746900B2 - Storage shelf fall prevention device - Google Patents

Description

  The present invention relates to a fall prevention device for preventing an article from falling due to an earthquake in a storage shelf (rack) for placing and storing various articles.

Conventionally, in order to prevent an article stored in a storage shelf from falling due to an earthquake, a fall prevention device having a long fall prevention frame on the left and right is known. For example, in Patent Document 1, the left and right ends of the fall prevention frame are supported on the storage shelf main body so as to be able to move up and down, and the fall prevention frame is locked in a non-operating position that overlaps the front end surface of the shelf frame during normal operation. A device is disclosed in which the lock is unlocked when it is released and the fall prevention frame is lifted up to the operating position facing the opening by a spring. Patent Document 2 describes a fall prevention device that drops a fall prevention frame to its operating position by its own weight when a vibration detector is operated.
JP 2002-112845 A JP 2000-21148 A

  However, according to the conventional anti-drop device, the anti-drop frame that is long on the left and right is supported by the storage shelf body at both ends. There was a problem that the prevention frame was easily destroyed. In addition, since the fall prevention frame is normally placed at the non-operating position, especially in the case of storage shelves installed in manufacturing factories, etc., dust accumulated for a long time hinders the movement of the fall prevention frame and causes an earthquake. The fall prevention device might not work.

  An object of the present invention is to solve the above-described problems and to provide a storage shelf fall prevention device that can reliably prevent an article from falling due to an earthquake with a robust structure.

In order to solve the above-described problems, the fall prevention device of the present invention is long in the vertical direction to prevent the article from falling from the opening in a storage shelf having a shelf frame on which the article is placed and an opening to put in and out the article. A fall prevention frame, a support member that supports the fall prevention frame so that it can move to the left and right between an action position that faces the opening and a non-action position that opens the opening, and an opening side end of the shelf position of the fall prevention frame at the action position And a holding tool that is held by the unit, and further includes one or both of the following characteristic means (1) and (2) .

( 1) The holding tool is provided with a laterally open concave portion into which the fall prevention frame is fitted, and a locking member for confining the fall prevention frame in the concave portion. Although it does not specifically limit as a locking member, A bolt and a pin can be illustrated. A member for preventing the pin from coming off may be provided.
(2) A rope for suspending the fall prevention frame is used for the support member. Although it does not specifically limit as a rope, A chain and a wire can be illustrated.
(3) When the above (2) is provided, it is preferable to connect an operation member that moves the fall prevention frame to the left and right at a joint portion between the rope and the fall prevention frame or in the vicinity thereof. Although it does not specifically limit as an operation member, Manual traction members, such as a wire and a rope, or automatic traction members, such as an air cylinder and an electric winch, can be illustrated.

  In addition, the articles | goods accommodated in a storage shelf are not specifically limited, A steel plate, plate glass, a wooden panel, a component box, a tool box, a machine, etc. can be illustrated. These articles may be placed directly on the shelf frame or stored via a pallet so that they can be handled with a forklift. For the fall prevention frame, use frame materials that are strong enough not to be deformed by articles struck by vibration, such as steel pipes, steel bars, angle steel, channel steel, strip steel, wooden squares, logs, etc. it can.

According to the fall prevention device of the present invention, the fall prevention frame that is long in the vertical direction is provided with a shelf provided by a holding tool provided with a laterally open recess into which the fall prevention frame is fitted and a locking member that traps the fall prevention frame in the recess. Since the frame is held at the opening side end of the frame, there is no fear that the fall prevention frame will be destroyed by the article squeezed out by vibration, and the fall of the article can be surely prevented by the robust structure. Further, since the fall prevention frame is arranged at the operation position from the normal time and functions immediately when an earthquake occurs, the reliability of the fall prevention device is improved. Further, when a rope for suspending the fall prevention frame is used as the support member, the fall prevention frame can be maintained in a vertical posture by its own weight, and can be smoothly translated between the working position and the non-working position.

  Hereinafter, the best mode for carrying out the present invention will be described. A storage shelf 1 shown in FIG. 1 includes a plurality of upper and lower shelf frames 5 on which articles 6 are placed and an opening 8 through which the articles 6 are taken in and out. The fall prevention device 10 has a vertically long drop prevention frame 11 that prevents the article 6 from falling from the opening 8, an action position that faces the drop prevention frame 11 toward the opening 8, and a non-action position that opens the opening 8. A chain 12 (supporting member) that is suspended so as to be movable to the left and right, and a holder 22 that holds the drop-preventing frame 11 at the operating position at the opening side end of the shelf frame 5 are provided. The holder 22 is provided with a laterally open recess into which the fall prevention frame 11 is fitted, and a locking member for confining the fall prevention frame 11 in the recess.

Next, an embodiment of the present invention will be described with reference to FIGS. The storage shelf 1 of this embodiment includes a main body frame 2 that stores an article 6 (steel plate) that is a sheet metal processing material. The main body frame 2 is assembled in a rectangular parallelepiped shape from the four support columns 3 and the top frame 4. Inside the main body frame 2 , four upper and lower shelf frames 5 are horizontally installed at predetermined intervals, and a pallet 7 on which articles 6 are loaded is placed on the shelf frame 5. Openings 8 and 9 for taking in and out the pallet 7 with a forklift are formed on the front and rear surfaces of the main body frame 2.

The fall prevention device 10 of this embodiment includes two right and left fall prevention frames 11 that prevent the articles 6 from dropping from the openings 8 and 9 immediately before and after the main body frame 2. The fall prevention frame 11 is long and vertically formed of a steel pipe longer than the distance between the top frame 4 and the lowermost shelf frame 5, and is suspended from the bracket 14 of the ceiling 13 by the chain 12 at the upper end. The chain 12 supports the fall prevention frame 11 so that it can move left and right at an operating position (see FIG. 1) that faces the openings 8 and 9 and a non-operating position that opens the openings 8 and 9 (see FIG. 2). Yes.

  A wire 16 that moves the fall prevention frame 11 to the left and right is connected to a joint between the fall prevention frame 11 and the chain 12. Rods 17 are erected at the four corners of the top frame 4, and pulleys 18 for guiding the wires 16 are supported at the upper ends thereof. A ring 19 is formed at the lower end of the wire 16, and a hook 20 that hooks the ring 19 on the support column 3 is projected. And the wire 16 is pulled manually, the fall prevention frame 11 is pulled near the support | pillar 3, the ring 19 is hooked on the hook 20, and the fall prevention frame 11 can be arrange | positioned in a non-operation position.

  On the front end face and the rear end face of the top frame 4 and the shelf frame 5 of each stage, a holding tool 22 that holds the fall prevention frame 11 at the operation position is provided. The holder 22 is a square steel pipe and is formed in a plane horizontal U shape (see FIG. 4), and is fixed to the top frame 4 and the shelf frame 5 by welding or bolts. The holding tool 22 is provided with a laterally open recess 23 into which the fall prevention frame 11 is fitted, a locking pin 24 for confining the fall prevention frame 11 in the recess 23, and a leaf spring 25 for preventing the locking pin 24 from coming off. It has been. The locking pin 24 is bent in an L shape and is removably attached to the hole 26 of the lower three-stage holder 22. The three upper and lower locking pins 24 are connected to each other by a dissipation prevention chain 27. No locking pin 24 is attached to the upper two-stage holder 22 that is difficult to reach.

  In the storage shelf 1 of this embodiment, as shown in FIG. 1, the fall prevention frame 11 is normally disposed at the operating position, and is held by the top frame 4 and the shelf frame 5 of each stage by the holding tool 22. Therefore, when an earthquake occurs, the fall prevention frame 11 functions immediately, and the squeezing of the article 6 due to the vibration can be restricted and the fall from the shelf frame 5 can be prevented. In addition, since the vertically long drop-preventing frame 11 is restrained by the holding tool 22 at five locations, the drop-preventing frame 11 is not destroyed by an impact when the article 6 is pushed out, and has a robust structure. It is possible to reliably prevent the article 6 from falling.

  On the other hand, when putting the article 6 in and out of the storage shelf 1, as shown in FIG. 2, the locking pin 24 is removed from the holder 22 and the wire 16 is pulled to draw the fall prevention frame 11 to the non-operating position. In this way, the article 6 can be easily put in and out without being obstructed by the fall prevention frame 11. After completion of the work, the wire 16 is loosened to return the fall prevention frame 11 to the operating position, and is held by the holding tool 22 to prepare for an earthquake. Since the fall prevention frame 11 is suspended from the ceiling 13 by the chain 12, the fall prevention frame 11 can be maintained in a vertical posture by its own weight, and can be smoothly translated between the working position and the non-working position.

The present invention is not limited to the above-described embodiments. For example, as described below, the present invention can be appropriately modified and embodied without departing from the spirit of the invention.
(1) As shown in FIG. 5, when the storage shelf 1 is installed near the wall 30, the fall prevention frame 11 on the wall 30 side is omitted, and the fall prevention device 10 is placed on the front two fall prevention frames 11. Consists of.
(2) Increasing the number of fall prevention frames to three, four, five or more in the case of a storage shelf for storing narrow articles.

(3) In the fall prevention device 10 in which the fall prevention frame 11 is suspended by the chain 12, the wire 16 is pulled by an air cylinder or wound by an electric winch.
(4) As shown in FIG. 6, the trolley | bogie 32 is provided in the upper and lower ends of the fall prevention frame 11, the long rail 33 is laid in the right and left on the lower end part and the top frame 4, and the fall prevention frame 11 is attached to the trolley 32. It is supported so as to be movable left and right by the rail 33.

It is a front view of the storage shelf which shows one Example of this invention. It is a front view of the storage shelf which shows the state which has arrange | positioned the fall prevention frame in the non-operation position. It is a cross-sectional view of the storage shelf of FIG. It is a perspective view which shows the fall prevention apparatus of the storage shelf of FIG. It is a cross-sectional view of a storage shelf showing another arrangement example of the fall prevention device. It is a front view of the storage shelf which shows the example of a change of a fall prevention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage shelf 2 Body frame 5 Shelf frame 6 Goods 8 Opening part (front)
9 Opening (rear)
DESCRIPTION OF SYMBOLS 10 Fall prevention apparatus 11 Fall prevention frame 12 Chain 16 Wire 22 Holder 23 Recessed part 24 Locking pin 32 Carriage 33 Rail

Claims (4)

In a storage shelf provided with a shelf frame for placing articles and an opening for taking in and out articles, a vertically long fall prevention frame for preventing the article from falling from the opening, an action position and an opening facing the fall prevention frame to the opening comprising a supporting member for movably supporting the right and left in the inactive position of opening the part, and a holder for holding the drop prevention frame operating position to the opening side end portion of the shelf frame, into the retainer, fall prevention A storage shelf fall prevention device, comprising: a laterally opening recessed portion into which a frame is fitted; and a locking member for confining the fall prevention frame in the recessed portion . In a storage shelf provided with a shelf frame for placing articles and an opening for taking in and out articles, a vertically long fall prevention frame for preventing the article from falling from the opening, an action position and an opening facing the fall prevention frame to the opening A support member that supports the movable member so that it can move left and right at a non-operating position that opens the portion, and a holder that holds the drop-preventing frame at the working position on the opening side end of the shelf frame. An apparatus for preventing a storage shelf from falling , wherein a rope for hanging a frame is used . In a storage shelf provided with a shelf frame for placing articles and an opening for taking in and out articles, a vertically long fall prevention frame for preventing the article from falling from the opening, an action position and an opening facing the fall prevention frame to the opening A support member that supports the movable portion so that it can move to the left and right at a non-operating position that opens the portion, and a holding tool that holds the drop-preventing frame at the working position at the opening side end of the shelf frame. A storage shelf drop , characterized in that a laterally open recess into which the frame is fitted and a locking member for confining the fall prevention frame in the recess are provided, and a rope for hanging the fall prevention frame is used as the support member. Prevention device. 4. The storage shelf drop prevention device according to claim 2, wherein an operating member for moving the fall prevention frame to the left and right is connected to a joint between the rope and the fall prevention frame.

Images