JPH0726535Y2 - Seismic isolation rails for mobile shelves - Google Patents

Description

TECHNICAL FIELD The present invention relates to a seismic isolation structure for a movable shelf that can travel on rails.

The conventional moving rack is capable of traveling in a direction perpendicular to the front surface of the rack, and a branch passage is formed between the moving racks adjacent to each other so that articles stored in the rack booth can be easily taken out. , The lock device is designed to work so that the shelves do not move carelessly while taking out goods.

If there is an earthquake with the locking device activated and the vibration direction is the traveling direction of the moving shelf, the items stored in the shelves may fall, and the natural frequency of the shelf itself and the vibration of the earthquake may occur. If the numbers match, they may resonate and collapse.

On the other hand, if there is an earthquake when the locking device is not working,
There is a risk that people will be pinched because the shelves will move greatly and narrow the branch passages.

Therefore, an example has been proposed in which the floor on which the moving shelves are installed has a seismic isolation floor structure (Japanese Utility Model Publication No. 1-159049).

The example is a seismic isolation floor structure in which an intervening member is interposed between the ground or the floor of a building and the movable floor, and the movable floor can be moved in at least one direction by the intervening member.

The vibration of the earthquake is absorbed by the inclusions, and the vibration transmitted to the installation (moving shelf) installed on the movable floor is suppressed.

However, since the seismic isolation floor structure is a structure in which the entire floor supporting the movable shelf is a movable floor, a recess is formed widely on the floor surface over the movable allowable area of the movable floor. There is a drawback that construction is required, construction is large, and costs are increased by using a special floor member.

The present invention has been made in view of the above point, and an object of the present invention is to provide a seismic isolation rail that is easy to construct and costs little on a moving shelf.

Means and Actions for Solving the Problems The present invention is characterized in that, in a movable shelf that can travel on rails, it is provided with supporting means for movably supporting the rails within a predetermined range between the rails and a floor surface. It is a seismic isolation rail for a mobile shelf.

Since the supporting means movably supports the rail on which the movable shelf travels, it suffices to provide the supporting means along the rail, and the construction is simple and inexpensive.

In addition, the structure that supports the rail so that it can be moved within the predetermined range only in the same direction as the traveling direction of the movable shelf further simplifies the structure of the support means, and especially when stored items are dropped or the shelf is inadvertently It is possible to obtain a large seismic isolation effect by absorbing vibrations in the traveling direction, which has a high risk of moving.

Embodiment An embodiment according to the present invention shown in FIGS. 1 to 6 will be described below.

The movable shelves 1 of this embodiment can be independently moved by operating the handles 30 provided on the movable shelves 1, and the traveling can be prohibited by operating the lock lever 31. FIG. 1 is a front view showing a front surface of the movable shelf as a partial cross section, and FIG. 2 is a side view thereof.

The movable rack 1 has columns 3 standing upright at a predetermined interval in the width direction on an elongated underframe 2 in the width direction (horizontal direction) perpendicular to the traveling direction (front-back direction), and the upper ends of the columns 3. A top plate 4 is erected to form a skeleton, and a multi-tiered shelf plate 10 is supported by columns 3 to form a plurality of shelf booths, and side plates are provided on the columns 3 erected at both ends of the underframe 2. 5 is attached.

The handle 30 and the lock lever 31 are provided on the side plate 5 on the main passage side orthogonal to the branch passage.

On the lower surface of the underframe 2, paired bearings 6 are vertically provided at four corners and at the center in the width direction, and a rotating shaft 7 is installed via the bearings 6, and a wheel 8 is provided on the rotating shaft 7 between the opposed bearings 6. , 9
Is fitted and rotatably supported.

The four wheels 8 on both the left and right sides are bilaterally symmetric, and a flange 8a is formed along one end surface, but the other wheels 9 on the inner side do not have a flange.

On the other hand, rails 11 and 43 on which the wheels 8 and 9 are placed are laid in the groove 13 provided on the floor 12, and the support structure thereof will be described with reference to FIGS. 3 to 11.

The support structures of the left and right rails 11 and the inner rail 11 are different. First, the rail support structures on both sides will be described with reference to FIGS. 3 to 6.

A groove 13 provided on the floor 12 has a rectangular cross section, and a long metal plate is bent into the groove 13 in a U-shaped cross section to open a substrate 14 above the substrate 14. The fixing piece 14a extending from the base plate 16 is embedded by being fixed by bolts 15, and one end of the cover member 16 is fixed by bolts 17 and nuts 18 to the bent and horizontal portions of the left and right upper edges of the board 14, respectively. It

The left and right cover members 16 are bent in a staircase shape and extend inwardly from the fixing portion toward each other with a constant space provided therebetween.

Rail closing plates 19 are applied to the front and rear ends of the board 14 and the cover member 16.

On the left and right side walls of the substrate 14, a plurality of buffer rubbers 20 which are rubber-made cushioning members are provided in a protruding manner at a position facing each other at regular intervals in the front-rear direction. On the front and rear ends, a slide receiving member 21 made of resin and having a smooth and slippery surface is attached.

A long rectangular pipe member 22 having a square cross section is sandwiched between the left and right cushioning rubbers 20 on the slide receiving member 21, and the front and rear ends of the rectangular pipe member 22 are brought into contact with the rail closing plate 19. The movement in the front-back direction is prohibited, and the left-right direction can be slid by the deformation of the cushion rubber 20.

On the upper surface of the substrate 14, a slide receiving member 23, whose resin surface is also slippery, is adhered, and a slide plate 24 is slidably mounted on the slide receiving member 23 and the slide plate 24 is The left and right ends are bent downward so as to sandwich the square pipe member 22 with a slight margin and play a role of a stopper, and the front and rear ends leave a certain distance to the rail closing plate 19.

A rail receiving plate 25 having substantially the same length and width is welded to the upper surface of the sliding plate 24. The rail receiving plate 25 has its left and right end portions bent upward, and then further bent inward. hand,
An opening is formed between the left and right bent portions, the rail 11 is fixed to the bottom surface of the rail receiving plate 25, and the rail 11 is laid in the front-rear direction (the traveling direction of the movable shelf 1).

The receiving plate 27 is welded to the front and rear ends of the rail receiving plate 25.
The compression springs 28, which are buffer members, are interposed between the rail closing plate 19 and the rail closing plate 19 facing each other at two positions on the left and right.

Both ends of the compression spring 28 are wound around a boss 29 projecting from the rail closing plate 19 and the receiving plate 27, and the rail receiving plate 25 is centered in the left-right width direction by the force of the compression spring 28 to restore the linear shape. The force that always tries to return to is working.

The wheel is mounted on the rail 11 supported under the above structure.
8 and 9 are mounted, and the movable shelf 1 can run in the front-rear direction.

Therefore, the rail 11 is a slide receiving member in the front-back direction.
It is possible to move against the force of the compression spring 28 by the sliding between the sliding plate 23 and the sliding plate 24, while the square pipe member 22 supporting the rail 11 in the left-right direction is between the sliding receiving member 21 and It is possible to move against the elastic force of the cushioning rubber 20 by sliding.

Since the rail 11 is supported in this way, when the floor 12 vibrates in the front-back direction due to an earthquake or the like, the compression spring 28
Absorbs the vibration and suppresses the vibration transmission to the rail 11,
When oscillates in the left-right direction, the cushioning rubber 20 can absorb the vibration and suppress the transmission of the vibration to the rail 11.

Although the transmission of vibrations to the rails 11 is suppressed as described above, the rail receiving plate 25 is not covered by the cover member 25 to the extent that the left and right rails 11 do not derail even when the rails 11 move toward or away from each other to the maximum extent. Left and right movement is restricted by 16.

If you want to keep the width between the rails constant, embed a pipe-shaped long member on the floor at a required interval between both rails, and slidably insert a connecting material into the same pipe. The rails may be connected to each other.

Next, a support structure for the inner rail 11 having a seismic isolation structure only in the front-rear direction in which the movable rack travels will be described with reference to FIGS. 7 to 11.

A substrate 41 attached to the bottom and side surfaces of a groove having a rectangular cross section provided on the floor 12, a cover member 42 for covering the left and right side edges of the groove,
The rail receiving plate 44 and the like to which the rail 43 is laid and fixed are substantially the same as the corresponding members of the rail supporting structures on both sides.

The member welded to the lower surface of the rail receiving plate 44 is not a sliding plate but a moving plate 45 that moves by rolling contact, and the shape is substantially the same as that of the sliding plate 24, and the left and right ends are bent downward to form a substrate.
It is close to the left and right side walls of 41 (see Fig. 9).

As shown in FIG. 11, a rail 43, a rail receiving plate 44, and a moving plate 45
Are fixed to each other and a backing plate 46 is attached to the front and rear end faces thereof to form a moving member 47 that can move integrally.

The support member 48 that movably supports the moving member with the substrate 41 is such that a plurality of rollers 50 are rotatable between a pair of left and right bearing plates 49 facing each other in the longitudinal direction as shown in FIG. A closing plate 51 is fixed to the front and rear ends of the bearing plate 49, and a cushioning rubber 52 as a cushioning member is provided on the closing plate 51 so as to project outward.

The roller 50 has an outer diameter larger than the vertical width of the bearing plate 49, and a part is exposed above and below the bearing plate 49.

Such a support member 48 has a moving plate 4 below the moving member 47.
5, the roller 50 is loosely fitted in the recess formed by the receiving plate 46.
The upper part of the roller comes into rolling contact with the lower surface of the horizontal part of the moving plate 45, the cushioning rubber 52 contacts the receiving plate 46, and the moving member 47 and the supporting member 48 can be moved by an appropriate distance in the front-back direction.

When the moving member 47 and the supporting member 48 combined in this way are fitted into the concave portion of the substrate 41, the lower part of the roller 50 is placed on the substrate.
The upper surface of 41 is in point contact with each other to support the moving member 47 and the supporting member 48 so as to be movable in the front-rear direction.

A buffer rubber 54, which is a buffer member, is provided on the rail closing plates 53 provided at the front and rear ends of the substrate 41 so as to project inward, and abuts the front and rear receiving plates 46 of the moving member 47.

The wheels 9 of the movable rack are placed on the rails 43 supported by the above supporting structure.

Therefore, the rail 43 can be moved back and forth via the roller 50, and the cushioning rubbers 52, 54 absorb the vibrations and suppress the transmission of the vibrations.

That is, even if there is an earthquake accompanied by vibration in the same front-back direction as the traveling direction of the movable rack, the transmission of vibration from the floor 12 to the rail 43 is suppressed.

In this embodiment, as described above, the rail support structures on both sides are seismic isolation structures for front, rear, left and right vibrations, and the inner rail support structures are seismic isolation structure for front and rear vibrations.

Therefore, considering the transmission of vibration to the moving shelf itself,
Since the transmission of vibration in the front-rear direction is suppressed for all rails 11 and 43, if the traveling rack is locked and traveling is prohibited, stored items can be prevented from falling, and even if the traveling rack is unlocked, the traveling rack can be rapidly moved. It is possible to avoid dangerous running and avoid the danger of being caught in a moving shelf.

On the other hand, with respect to the vibration in the left-right direction, the transmission of the vibration in the left-right direction is suppressed for the rails 11 on both sides, but the inner rail 43
For, the transmission of vibration is not suppressed.

However, since the wheel 9 mounted on the inner rail 43 does not have a flange, it is possible to absorb the vibration with a gap between the two, and as a whole, the transmission of the vibration to the movable rack is suppressed.

It should be noted that the stored items do not drop relatively easily against vibration in the left-right direction that is perpendicular to the traveling direction, and there is no inadvertent traveling of the moving shelves, so if the shelves themselves have a seismic structure to prevent collapse, all rails It is not necessary to make the supporting structure of the seismic isolation structure against the vibrations on the left and right sides.

As described above, in this embodiment, the seismic isolation structure for supporting the rail is provided only in the portion along the rail, so that the construction is simple and can be installed at low cost.

Particularly, in this embodiment, since the inner rail 43 has a rail support structure in which only the traveling direction of the movable shelf is seismically isolated, the structure is simplified and the construction is facilitated, and it can be provided at a low cost and at the same time as an earthquake or the like. The effect on vibration is not small.

Next, a modified example of the rail seismic isolation structure is shown.

The example shown in FIG. 12 and FIG. 13 shows a rail receiving plate 82 in which a substrate 80 fitted in a groove formed on a floor and a rail 81 are laid.
It is a simple one in which a plurality of column-shaped seismic isolation rubbers 83 are interposed between and, and has a seismic isolation effect against all horizontal vibrations.

The example shown in FIG. 14 and FIG. 15 is a substrate fitted in a groove.
Bearings 91 are installed upright on the bottom of 90 and a pair of rotating rollers 92 are installed.
A moving member 93 is supported between the rotating rollers 92 so as to be movable in the left-right direction, and a plurality of moving members 93 supported in this way are provided in the front-rear direction.
A rail 94 fixed to the top and oriented in the front-rear direction is installed.

On the other hand, the rail 96 on which the wheels 95 of the movable shelf are placed is laid on a rail receiving plate 97, and the rail receiving plate 97 has a bearing member 99 vertically hung via a cover plate 98 and is axially supported by the bearing member 99. Further, the flanged roller 100 is placed on the rail 94 oriented in the front-rear direction with the left and right sides sandwiched by the flanges.

The moving member 93 is urged by springs 101 on both left and right sides, and a buffer member (not shown) is provided on the front and rear of the rail receiving plate 97 and the like.

Therefore, the rail 96 can be moved in the left-right direction by the movement of the moving member 93, and can also be moved in the front-rear direction by the rotation of the roller 100, and the vibrations in the horizontal direction of the floor are absorbed by the respective cushioning members, and the vibration to the rail 96 is absorbed. Transmission is suppressed.

In the example shown in FIGS. 16 and 17, the roller 112 is rotatably rotatably supported between bearings 111 erected on the bottom surface of the substrate 110 in the left-right direction. The rail receiving plate 114 is mounted on the rail movably in the front-rear direction and the rail 113 is laid on the rail receiving plate 114, so that the vibration in the front-rear direction can be absorbed.

In the example shown in FIGS. 18 and 19, a slide receiving member 121 made of resin and having a slippery surface is laid in the front-rear direction on the bottom surface of the substrate 120, and fixed to the lower surface of the rail receiving plate 123 on which the rail 122 is laid. The plural sliding members 124 made of resin are
Since it is slidably contacted and supported on the above, the relative vibration of the slide receiving member 121 and the sliding member 124 can absorb the vibration of the floor.

In the above embodiments, the cushioning rubber is used as the cushioning member, but a vibration damper such as a damper may be installed at the same time.

Effect of the Invention The present invention can simplify the construction and reduce the cost by making only the supporting means of the rail on which the movable rack travels by the seismic isolation structure.

Further, by providing the rails with the seismic isolation support structure only in the same direction as the traveling direction of the movable shelf, the support structure is further simplified and the cost is further reduced.

With such a simple seismic isolation structure, it is possible to prevent the moving shelf from running suddenly even in the event of an earthquake, to ensure safety, and to prevent the storage shelf from falling as much as possible.

[Brief description of drawings]

FIG. 1 is a front view showing a partial cross section of a movable shelf according to an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG.
FIG. 4 is a side view of the main part of the front end with a partial cross-section partially removed, FIG. 5 is a cross-sectional view of the main part, FIG. 6 is a side view of the central part of the same, and FIG.
FIG. 8 is a side view of a main part of a seismic isolation rail according to another embodiment, FIG. 8 is a side view of the front end part of the same, FIG. 9 is a cross-sectional view of the same part, and FIG. Is a perspective view of the main part, FIG. 12 is a cross-sectional view of the main part of a seismic isolation rail of another embodiment, and FIG. 13 is a side view of the main part.
FIG. 14 is a sectional view of a main part of a seismic isolation rail of another embodiment, FIG. 15 is a side view of the same part, FIG. 16 is a sectional view of a main part of a seismic isolation rail of another embodiment, and FIG. FIG. 18 is a side view of the main part, FIG. 18 is a cross-sectional view of the main part of a seismic isolation rail of another embodiment, and FIG. 19 is a side view of the main part. 1 ... movable shelf, 2 ... underframe, 3 ... pillar, 4 ... top plate, 5
...... Side plate, 6 ... Bearing, 7 ... Rotating shaft, 8,9 ... Wheels, 1
0 …… Shelves, 11 rails, 12 …… Floor, 13 …… Grooves, 14 ……
Substrate, 15 ... Bolt, 16 ... Cover member, 17 ... Bolt, 18 ... Nut, 19 ... Rail closing plate, 20 ... Buffer rubber, 21 ... Sliding receiving member, 22 ... Square pipe member , 23 …… Sliding receiving member, 24 …… Sliding plate, 25 …… Rail receiving plate, 27 …… Receiving plate, 28 …… Compression spring, 29 …… Boss, 30 …… Handle, 31 …… Lock lever , 41 …… substrate, 42 …… cover member, 43 …… rail, 44 …… rail receiving plate, 45 …… moving plate,
46 …… Catch plate, 47 …… Moveable member, 48 …… Support member, 49 ……
Bearing plate, 50 ... Roller, 51 ... Closure plate, 52 ... Buffer rubber, 53 ... Rail closure plate, 54 ... Buffer rubber, 80 ... Board, 81 ... Rail, 82 ... Rail receiving plate, 83 …… Seismic isolation rubber, 90 …… Substrate, 91 …… Bearing, 92 …… Rotating roller, 93…
… Moveable member, 94 …… Rail, 95 …… Wheel, 96 …… Rail, 97 …… Rail support plate, 98 …… Cover plate, 99 ……
Bearing member, 100 ... Roller, 101 ... Spring, 110 ...
… Substrate, 111 …… Bearing, 112 …… Roller, 113 …… Rail, 114 …… Rail receiving plate, 120 …… Substrate, 121 …… Sliding receiving member, 122 …… Rail, 123 …… Rail receiving plate, 124 …… Sliding member.

Claims (2)

[Scope of utility model registration request] 1. A seismic isolation rail for a movable shelf, which comprises a support means for supporting the rail so as to be movable within a predetermined range between the movable shelf and the floor. 2. The movable rack exemption according to claim 1, wherein the support means supports the rail so as to be movable within a predetermined range only in the same direction as the traveling direction of the movable rack. Quake rail.