JP3407186B2 - Moving rack equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving rack device which is preferably used in a library or warehouse.

[0002]

2. Description of the Related Art As a moving rack device of this type, a plurality of racks are supported by a rail so that they can be guided, and the racks are moved along the rails to form a passage in a direction orthogonal to the rails between arbitrary racks. It is known to be configured so that it can be formed. That is, in this product, a shelf or the like is provided on the end face in the moving direction of the rack, the user moves the rack as necessary, and the user enters between the racks through a passage formed between the rack and an adjacent rack. Thus, the article can be put in and taken out of a desired shelf.

[0003]

By the way, there are many large-sized movable rack devices of this type in which the depth dimension orthogonal to the rail is much larger than the width dimension along the rail. With such things, when an earthquake etc. occurs,
Although the rack is stable in the direction orthogonal to the rails, the rack becomes extremely unstable in the rail direction, and there is a risk of falling.

In view of these problems, some conventional devices are provided with a fall prevention mechanism. This one is configured so that a ceiling rail is provided along the track of movement of the rack and a part of the upper end of the rack can be engaged with and guided by the ceiling rail. Since the lower end of the rack does not have to be guided by rails, it is simply slidably supported via supporting elements such as wheels.

However, in order to engage the upper end of the rack and the ceiling rail in this way, the upper end of the rack and the lower surface of the ceiling rail must be close to each other to some extent. For this reason, there is a problem in that the fall prevention mechanism cannot be applied to a rack whose height is much smaller than the ceiling height. On the other hand, it is conceivable that the rack is engaged with the rail in the vicinity of a support element such as a wheel that supports the rack, but in this type of moving rack device, the support width by the wheel is not so large. Since it is difficult to apply an effective stable moment with such a configuration, excessive force acts on the engaging part and that part does not work.
There is also a high risk of damage early.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention utilizes a rail that supports the lower end of a rack so that the rack has an effective fall prevention effect. There is.

[0007]

DETAILED DESCRIPTION OF THE INVENTION That is, the mobile rack device of the present invention, arranged a plurality of racks on the rails fixed to the floor, by moving along the rack to the rail, between any rack It is configured so that a passage can be formed therein. Then, at the bottom of the rack, an arm extending outward from the end surface in the moving direction of the rack is fixed so as not to interfere with another rack, and the arm of the arm is fixed .
The extension end is configured so that it can be guided by the rail.
The extended arm to increase the stability moment
It is characterized in that the rack is prevented from falling over .

According to this structure, even if the rack is about to fall, the arm fixed to the bottom of the rack is restricted by the rails, so that the rack is effectively prevented from falling. Particularly, since the arm extends outward from the end surface in the moving direction of the rack and the extended end is guided by the rail, the rack is railed near a support element such as a wheel that supports the rack. Compared with the case of engaging with the rack, the stability moment of the rack due to the rail will increase surely as the arm is extended, and the restraining force acting between the rack and the rail can be suppressed to a relatively small value. become. Therefore, it is possible to provide a fall prevention function that is not affected by the height of the rack without impairing the effective earthquake resistance.

As a concrete embodiment, both of the extending ends of the arm are located outward of both end faces of the rack in the moving direction, and the distance between the extending ends is The size of the rack is approximately twice the size in the moving direction of the rack. In another preferable embodiment, the rail is housed in the center of the rail base so as to form a channel-shaped rail base having a continuous opening in the center of the upper wall, and the rack is housed in the center of the rail base. And a rail main body for supporting the wheels, and the arm is arranged by utilizing the cavity.

In this case, a rack in which the arm is located in a cavity formed on one side of the rail body and a rack in which the arm is located in a cavity formed on the other side of the rail body are alternately arranged. It is desirable to keep it. Further, as a preferable guide structure for the arm and the rail, a roller rotatable around a horizontal axis orthogonal to the rail is attached to the extended end of the arm, and the roller is brought into rolling contact with the upper wall of the rail base. Or a roller that is rotatable around a horizontal axis orthogonal to the rail on the extended end of the arm, and the roller is approximately evenly arranged on the top and bottom walls of the rail base. It is possible to cite one that is placed close to.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The moving rack device of this embodiment is used for a library or the like, and as shown in FIG. 1, a plurality of racks 2 are arranged on a pair of rails 1 laid parallel to each other, and these racks 2 are railed. It is configured such that a passage A can be formed between arbitrary racks 2 by moving along the rack 1.

The rail 1 is, as shown in FIGS. 2 and 3,
The channel-shaped rail base 11 having a continuous opening 11b in the center of the upper wall 11a and the rail base 11 are rigidly joined to the center of the rail base 11 so as to form cavities 11c on both sides and are housed in the rail base 11. A rail main body 12 that supports the rack 2 is provided, and the rail base 11 is fixed on the floor F via a plate-shaped base 13. In the case of this embodiment, the center-to-center distance d1 of the pair of rail main bodies 12 is set to about 8550 mm, for example.

On the other hand, as shown in FIGS. 1 and 2, the rack 2 includes a bottom plate portion 21, left and right side plate portions 22, and a top plate 23.
And a plurality of shelves 24, except for the racks 2 arranged at both ends in the moving direction, have a shelf space opened at both end faces 2a, 2b in the moving direction, and at both ends in the moving direction. The rack 2 to be arranged has a moving direction end surface 2a or 2b located on the outer side thereof closed. The width dimension in the direction along the rail 1, that is, the width dimension d2 of the side plate portion 22 is, for example, 4
The depth dimension orthogonal to the rail 1 is set to about 90 mm, that is, the dimension d3 between the pair of side plate portions 22 is 9000 mm.
It is set to a degree. Then, four wheels 3 are mounted on the lower surface of the bottom plate portion 21 near the four corners around an axle 3a orthogonal to the rail 1, respectively. The distance between the centers of the front and rear wheels 3, that is, the wheel base d4 is set to about 230 mm in this embodiment. Also, before and after 2
Between the front or rear axles 3a of the pair of axles 3a,
It is connected via a drive axle (not shown), and a drive force is applied to this drive axle via a drive mechanism 4 to rotate the wheels 3 in the forward or reverse direction so that the rack 2 can be moved back and forth along the rails 1. I have to.

The drive mechanism 4 includes a manual handle 41 pivotally supported on the side plate portion 22 of the rack 2 shown in FIG. 1 and a transmission mechanism (not shown) for transmitting the drive force input to the manual handle 41 to the drive axle. When the manual handle 41 does not input, the wheel 3 is configured to be held in a locked state by exerting an appropriate holding force. Further, an appropriate sensing unit for sensing vibration is provided in a part of the drive mechanism 4, and when an earthquake or the like occurs, the vibration is utilized to release the locked state with respect to the wheel 3, The rail 1 is free from the rail 1 to prevent falling.

In addition to this structure, in the present embodiment, as shown in FIGS. 1 to 5, the bottom surface of the bottom plate portion 21 of the rack 2 is located outside the end surfaces 2a, 2b of the rack 2 in the moving direction. The arms 5 are fixed to each other so as not to interfere with other racks 2. The arm 5 has a structure in which an upper piece 51, a side piece 52, and a lower piece 53 are continuously formed by plastically deforming a rigid sheet metal material so as to have a U-shaped cross section, and its longitudinal dimension d5 is The width dimension d2 of the side plate portion 22 of the rack 2 is set to approximately twice the width dimension d2.

At the mounting position of the rack 2, the side piece 52 of the arm 5 is hung in the continuous opening 11b of the rail base 11, and the lower piece 53 is arranged in the cavity 11c. The upper wall 11a of the rail base 11
Are placed facing each other with a certain distance. At this time, one of the racks 2 adjacent to each other has the arm 5 positioned in the cavity 11c formed on one side of the rail body 12, and the other arm is placed on the cavity 11c formed on the other side of the rail body 12. The racks 2 are arranged such that the mounting positions of the arms 5 are alternately arranged in a staggered manner.

A roller 54 is rotatably attached to both extending end portions 53a of the lower piece 53 of the arm 5 about the vertical axis m, and the roller 54 is attached to the side surface 12a of the rail body 12. It is arranged at a position where it can be rolled. The moving rack device of the present embodiment having the above-described configuration is fixed to the bottom of the rack 2 even if the rack 2 rolls sideways in the direction of the rail 1 due to an earthquake and falls down as shown by an imaginary line in FIG. Since the arm 5 interferes with the rail 1 and further movements are restricted, the rack 2 is effectively prevented from falling. In particular, since the arm 5 extends outward from the end faces 2a, 2b of the rack 2 in the moving direction, and the extending end 53a thereof is guided by the rail 1, for example, of the wheel 3 that supports the rack 2. Compared with the case where the rack 2 is engaged with the rail 1 in the vicinity, the stable moment of the rack 2 by the rail 1 is surely increased by the extension of the arm 5, and acts between the rack and the rail. The deterrent force will also be suppressed to a relatively small value. Therefore, it is possible to provide a fall prevention function that is not affected by the height of the rack without impairing the effective earthquake resistance.

In particular, in this embodiment, the two extending end portions 53a of the arm 5 are located outside the two end faces 2a, 2b of the rack 2 in the moving direction, and the both extending end portions 53 are located.
Since the distance d5 between a is set to be approximately twice the width dimension d2 of the rack 2, it is possible to surely increase the stability moment of the rack 2 to approximately twice that of the conventional case even if simply considered. it can. Strictly speaking, in this embodiment, the arm length d5 is about 4.26 times as large as the wheel base d4. Therefore, when the arm 5 is supported by the arm 5, the stable moment based on the extended end portion 53a is This is 4.26 times the stable moment based on the wheel 3 when it is supported only by the wheel 3. Moreover, since the extending end portion 53a of the arm 5 is positioned outside the both end surfaces 2a, 2b of the rack 2 in the moving direction, one of the extending end portions 53a is railed to the rack 2 with respect to the forward tilt. It strongly abuts on the upper wall 11a of the base 11, and the other end of the extending end 53a strongly abuts on the upper wall 11a of the rail base with respect to the rearward tilt, so that each arm 5 causes the rack 2 to fall forward or backward. It will be possible to correspond to. In addition, in these cases, the extended end portion 53a on the side not contacting the upper wall 11a of the rail base 11 via the roller 54.
Can be configured to be in contact with the bottom wall 11d of the rail base 11, so that the extension ends 53a of the arms 5 can be substantially evenly arranged on the rail base 11 from both sides in the moving direction of the rack 2. It is also possible to attach it and apply an even fall prevention force to the entire rack 2.

In this embodiment, the rail 1 is the upper wall 1
A channel-shaped rail base 11 having a continuous opening 11b in the central portion of 1a, and a rail that is housed in the central portion of the rail base 11 and supports the wheels 3 of the rack 5 so as to form cavities 11c on both sides. It is composed of a main body 12 and the arm 5 is arranged in the cavity 11c. Therefore, at least a part of the arm 5 can be suitably hidden from the outside by the rail 1.
Further, by locating the arm 5 at the center of the cavity 11c in the vertical direction, not only the upper wall 11a but also the bottom wall 11d can be effectively used as a guide surface.

Further, in this embodiment, the rack 2 in which the arm 5 is located in the cavity 11c formed on one side of the rail body 12 and the arm 5 in the cavity 11c formed on the other side of the rail body 12 are used. And the racks 2 in which are positioned are alternately arranged. For this reason, as shown in FIG. 5, in a state where adjacent racks 2 are arranged in contact with or close to each other, the arm 5 of one rack 2 extends along one side of the rail main body 12 so that the other rack 2 can move. Arm 5 of the rack 2 at the bottom
Is sunk into the cavity 11c on the side not provided with the rail main body 12 to the substantially middle position.
Along the other side of the rack 2, one of the bottoms of the rack 2 is sunk to a substantially intermediate position in the cavity 11c on the side where the arm 5 of the rack 2 is not provided. Therefore, it is possible to give the arm 5 a sufficient size within a range in which the arms 5 do not interfere with each other.

As described above, in the moving rack device of this embodiment, even if the rack 2 whose depth dimension d3 is much larger than the width dimension d2 is used, the rail 2 which is indispensable for its construction is effectively used. As a result, it is possible to prevent the rack 2 from tipping over in the event of an earthquake, while suppressing an increase in the number of parts as much as possible, thereby effectively improving safety. The specific configuration of each part is not limited to that of the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, as shown in FIG. 7, a roller 55 rotatable around a horizontal axis n orthogonal to the rail 1 is attached to the extended end portion 53 a of the arm 5, and the roller 54 is attached to the upper wall of the rail base 11. You may arrange | position so that it can roll-contact to 11a and the bottom wall 11d. By doing so, the arm 5 can be smoothly brought into contact with the upper wall 11a and the bottom wall 11d of the rail base 11, and it is possible to effectively prevent the contact portion from being damaged by a sudden solid contact.

Even if the arm is constructed so as to extend outward only at one end surface in the moving direction of the rack, the same function and effect as the above embodiment can be obtained.

[0023]

The present invention is carried out in the form as described above, and has the following effects. That is, the moving rack device of the present invention has a general structure as this type of device, and an arm extending outward from the end face in the moving direction of the rack is provided at the bottom of the rack with another rack. Fix it so that it does not interfere, and extend the arm.
It is configured so that the protruding end can be guided by the rail,
Increase the stability moment by the extended arm
The rack is prevented from falling .

Therefore, by providing such an arm, the effective support width of the rack, which is originally dependent on the pitch between the support elements such as the wheels, can be reliably expanded by the amount of the extension, so that the rack as a whole can be prevented from tipping over. It can be reliably prevented with a small force. Thus, it is possible to provide a moving rack device with a fall prevention function that can be applied regardless of the height of the rack by keeping the upper end of the rack free while maintaining effective earthquake resistance.

Further, both extending end portions of the arm are respectively positioned outwardly of both end faces in the moving direction of the rack, and the distance between the extending end portions is set to be approximately twice the dimension in the moving direction of the rack. When set, the stability moment of the rack can be improved at least approximately twice, and a fall prevention function that can respond to any fall motion of the rack is added to one arm. It is also possible to improve the fall-prevention effect by simplifying or adding a function of exerting an even deterrent force to the entire rack from the front and the rear in the moving direction.

Further, if the rail is composed of a channel-shaped rail base and a rail body housed in the center of the inside of the rail base, and the arms are housed in the cavities formed on both sides of the rail body, the arm is constructed. The outer surface of the rail base is effectively shielded from the outside to improve the overall appearance of the device, and by positioning the arm at the center of the cavity in the vertical direction, not only the top wall of the rail base but also the side wall is effectively used as a guide surface and falls. It is possible to improve the deterrent function. In this case, among the racks adjacent to each other, the arm of one rack is arranged in the cavity on one side of the rail body, and the arm of the other rack is arranged in the cavity on the other side of the rail body. It is possible to extend the effective support width of the rack as much as possible by giving the arms a dimension as long as possible without causing the arms to interfere with each other.

Further, as a guide structure between the arm and the rail, if a roller axially mounted around the horizontal axis at the extension end of the arm is brought into rolling contact with the rail, the rack can be used as a rail with a simple structure. It is possible to guide along the line very smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a schematic plan view of the same embodiment with a part thereof omitted.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged perspective view of an essential part of the embodiment.

FIG. 5 is an operation explanatory view of the same embodiment.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is an enlarged perspective view of an essential part corresponding to FIG. 4, showing another embodiment of the present invention.

[Explanation of symbols] 1 ... Rail 2 ... rack 2a, 2b ... end faces in the moving direction 5 ... Arm 11 ... Rail base 11a ... upper wall 11b ... Continuous opening 11c ... cavity 11d ... bottom wall 12 ... Rail body 53a ... Extended end 55 ... Laura A ... passage n ... horizontal axis

Claims (6)

(57) [Claims] [Claim 1] arranged a plurality of racks on the rails fixed to the floor, by moving along the rack to the rail, the moving rack configured so as to form a passage between any rack In the device, an arm extending outward from an end surface in the moving direction of the rack is fixed to the bottom of the rack so as not to interfere with another rack, and the extending end of the arm is fixed by the rail. guide
It can be configured to operate with the extended arm.
The constant moment is increased to prevent the rack from falling over.
The moving rack apparatus characterized by the Uni. 2. The two extending ends of the arm are located outwardly of both end faces of the rack in the moving direction, and the distance between the extending ends is a dimension of the rack in the moving direction. 2. The moving rack device according to claim 1, wherein the moving rack device is set to have a size approximately twice as large as the above. 3. A rail has a channel-shaped rail base having a continuous opening in the center of the upper wall, and a rail is housed in the center of the rail base so as to form cavities on both sides and supports wheels of the rack. The mobile rack device according to claim 1 or 2, further comprising a rail main body, wherein the arm is disposed by utilizing the cavity. 4. A rack in which an arm is located in a cavity formed on one side of a rail body and a rack in which an arm is located in a cavity formed on the other side of the rail body are alternately arranged. The moving rack device according to claim 3, 5. A roller, which is rotatable around a horizontal axis orthogonal to the rail, is attached to the extending end of the arm so that the roller can be brought into rolling contact with the upper wall of the rail base. The moving rack device according to 1, 2, 3 or 4. 6. A roller, which is rotatable around a horizontal axis orthogonal to the rail, is attached to the extending end of the arm, and the roller is arranged substantially evenly close to the upper and bottom walls of the rail base. The moving rack device according to claim 1, 2, 3, or 4.