JP2019108212A - Base isolation structure of rack - Google Patents

Abstract

To provide a base isolation structure of a rack capable of preventing an inclined sliding support from falling down from the rack.SOLUTION: A guide member 2 includes a sliding surface 26 where a slider 3 slides, and a groove part 23 which is extended in a first horizontal direction X and opened to the upper side. In the groove part 23, a dimension W2 in a second horizontal direction Y in a groove upper part 232 on the upper part side is set smaller than a dimension W1 in the second horizontal direction Y in a groove lower part 231 on the lower part side. The slider 3 includes a contact surface 35 contacting to the sliding surface 26 and a groove insertion part (protrusion part) 34 which protrudes from the contact surface 35 downward and is inserted to the groove part 23. In the groove insertion part 34, a groove insertion lower part (protrusion lower part) 341 on the lower part side is arranged at the groove lower part 231, and a groove insertion upper part (protrusion upper part) 342 on the upper part side is arranged at the groove upper part 232, and a dimension W3 in the second horizontal direction Y of the groove insertion lower part 341 is formed larger than the dimension W2 in the second horizontal direction Y of the groove upper part 232.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a seismic isolation structure of a rack.

The automatic rack warehouse is a warehouse that automates work such as loading and unloading, and can control a large amount of luggage efficiently by controlling an automatic transportation device in conjunction with a computer. There is.
The damage caused by the Great East Japan Earthquake on such automatic rack warehouses was more likely to have been caused by the fall and load collapse of the luggage stored in the racks than the damage to the racks of the automatic racks themselves.
For this reason, in the automatic rack warehouse, it is necessary to take measures to prevent the fall and the load collapse of the luggage stored in the rack as well as the earthquake countermeasure to prevent the damage of the rack itself.
On the other hand, it has been proposed that the rack has a seismic isolation structure to prevent a drop or a load collapse of a load accommodated in the rack (see, for example, Patent Document 1).

In the automatic rack warehouse disclosed in Patent Document 1, three functions of acceleration reduction, deceleration, and displacement recovery are integrated between the rack as a seismic isolation bearing and the pallet on which the load is placed in order to make the rack a seismic isolation structure. It uses an inclined slide bearing.
The inclined slide bearing is a guide member installed on a rack and having a sliding surface sloped to be V-shaped at the top, and a pallet mounted on the top and capable of sliding on the sliding surface of the guide member And a mover. The inclined slide bearing can reduce the response acceleration of the load of the pallet placed on the slider by relative movement of the guide member and the slider in the horizontal direction when an earthquake occurs. As a result, it is possible to prevent the damage due to the drop or load collapse of the pallets.
Further, in the automatic rack warehouse disclosed in Patent Document 1, the inclination angle of the inclined sliding bearing is set to an optimal value, and the pallet and the load of the load loaded on the pallet are used to damp the vibration of the automatic rack warehouse. It is also a seismic control system that can

JP, 2014-201385, A

Here, if the rigidity of the rack is low, the acceleration of the load loaded on the pallet is amplified several times when an earthquake occurs, and there is a possibility that the inclined sliding support may drop out of the rack due to the large acceleration applied to the inclined sliding support.
Further, in the automatic rack warehouse disclosed in Patent Document 1, since the guide member of the inclined slide bearing and the slider are not connected, the slider drops out of the guide member when a vertical vibration occurs due to an earthquake. There is a risk of

  Then, an object of this invention is to provide the seismic isolation structure of the rack which can prevent that an inclination slide bearing falls out of a rack.

  In order to achieve the above object, in the seismic isolation structure of a rack according to the present invention, in the seismic isolation structure of a rack on which a pallet capable of loading luggage is placed, a support member on which the pallet is placed; An inclined sliding support is provided between the pallet and the inclined sliding support, and the inclined sliding support is configured to be relatively displaceable in a first horizontal direction relative to the guiding member attached to the supporting member and the guiding member, and the pallet is mounted on the upper part And the guide member has a sliding surface which is directed upward and on which the slider slides, and a groove which extends in the first horizontal direction and opens upward. A first inclined slide formed on one side of the central portion in the first horizontal direction and inclined downward from one side to the other side in the first horizontal direction; On the other side of the moving surface and the first horizontal center part And a second inclined sliding surface which inclines gradually downward from the other side of the first horizontal direction toward the one side, and the groove portion is the first horizontal portion at the upper portion of the groove portion. The second horizontal dimension intersecting the second direction is smaller than the second horizontal dimension at the lower portion of the lower groove, and the slider is directed downward and abuts against the sliding surface And a protruding portion which protrudes downward from the contact surface and is inserted into the groove, and the contact surface is formed on one side of the central portion in the first horizontal direction, and the first horizontal surface is formed. A first inclined abutment surface that inclines from one side of the direction to the other side and abuts against the first inclined sliding surface, and on the other side of the first horizontal central portion Formed so as to gradually go downward from the other side of the first horizontal direction to the one side. And a second inclined contact surface which is inclined and in contact with the second inclined sliding surface, wherein the lower part of the lower part of the protrusion is disposed in the lower part of the groove and the upper part of the upper protrusion is The second horizontal dimension of the lower portion of the protrusion disposed in the upper portion of the groove is formed larger than the dimension in the second horizontal direction of the upper portion of the groove.

In the present invention, the protrusion of the slider is inserted into the groove of the guide member, and the second horizontal dimension of the lower portion of the protrusion disposed in the lower portion of the groove is formed larger than the second horizontal dimension of the upper portion of the groove. ing. Thereby, even if the protrusion is moved above the groove, the lower portion of the protrusion can not pass through the upper portion of the groove, so that the protrusion can be prevented from being detached from the groove.
As a result, even when vertical vibration occurs, it is possible to prevent the slider from coming off the guide member and falling off.

Further, in the seismic isolation structure of a rack according to the present invention, the guide member may be in contact with the support member, and the coefficient of friction between the guide member and the support member may be 0.4 or more.
With such a configuration, the friction between the guide member and the support member suppresses the slip between the guide member and the support member, so that the guide member may be displaced relative to the support member. The guide member can be prevented from dropping off from the support member.
Also, by setting the coefficient of friction between the guide member and the support member to an arbitrary value of 0.4 or more, the guide member is not displaced relative to the support member or the guide member does not fall off from the support member. By doing this, when installing the guide member on the support member, it is not necessary to weld the guide member and the support member or join them with a bolt, so the guide member can be easily installed on the support member.
In addition, when the pallet on which the load is loaded is placed on the upper portion of the inclined slide bearing, the frictional force between the guide member and the support member is increased. In the present invention, the guiding member is prevented from being displaced with respect to the supporting member and the guiding member from falling off from the supporting member even when the pallet on which the load is loaded is not placed on the upper portion of the inclined slide bearing. If the coefficient of friction between the guide and the support member is set to any value of 0.4 or more, the guide member may be displaced relative to the support member or the guide member may come off the support member regardless of the weight of the pallet or the load Can be prevented.

Further, in the seismic isolation structure of a rack according to the present invention, the slider may be in contact with the pallet, and a friction coefficient between the slider and the pallet may be 0.4 or more.
With this configuration, the pallet and the slider are prevented from slipping due to the friction generated between the pallet and the slider, so that the pallet may be displaced relative to the slider. It is possible to prevent the pallet from falling off the slider.
Also, set the coefficient of friction between the slider and the pallet to an arbitrary value of 0.4 or more so that the pallet does not shift relative to the slider or the pallet does not fall off the slider. Thus, when installing the pallet on the slider, it is not necessary to fix the pallet and the slider with a fixture or the like, so the pallet can be easily installed on the slider.
In addition, when the load loaded on the pallet is heavy, the frictional force between the slider and the pallet increases. In the present invention, the coefficient of friction between the slider and the pallet is set to 0. 0 so that the pallet does not shift relative to the slider and the pallet does not drop off from the slider even when no load is loaded on the pallet. By setting the value to an arbitrary value of 4 or more, it is possible to prevent the pallet from being displaced relative to the slider or the pallet from falling off from the slider regardless of the weight of the load loaded on the pallet.

Moreover, in the seismic isolation structure of the rack which concerns on this invention, the said guide member may have a closing member which closes the said 1st horizontal direction both ends of the said groove part.
With such a configuration, when the slider is moved maximally in the first horizontal direction with respect to the guide member, the protrusion of the slider is from the first horizontal end of the groove of the guide member. It can prevent getting out.

Moreover, in the seismic isolation structure of the rack which concerns on this invention, the said guide member may have an engaging part engaged with the said supporting member.
With such a configuration, the guide member can be prevented from falling off the support member.

Moreover, in the seismic isolation structure of the rack which concerns on this invention, the said protrusion part may space apart with the internal peripheral surface of the said groove part.
With such a configuration, when the slider and the guide member are relatively displaced in the first horizontal direction, no friction is generated between the protrusion and the guide member, so the protrusion is inserted into the groove. Even if it does not affect the performance of the inclined sliding bearing.

Further, in the seismic isolation structure of a rack according to the present invention, the guide member is a first guide member disposed on one side in the second horizontal direction, and a second guide member disposed on the other side in the second horizontal direction. A guide member may be provided, and the groove may be formed between the first guide member and the second guide member.
With such a configuration, the groove can be provided without forming the groove in the guide member itself.

  According to the present invention, since the inclined sliding bearing is prevented from dropping out of the rack, the load loaded on the pallet can be prevented from dropping out.

It is a perspective view showing an example of the seismic isolation structure of the rack by the embodiment of the present invention. It is a disassembled perspective view which shows an example of the inclination sliding support of the base isolation structure of the rack by embodiment of this invention. (A) is a top view of the inclined slide bearing in an initial state, (b) is a side view of (a). (A) is the sectional view on the AA line of FIG. 3 (a), (b) is the BB sectional drawing of FIG. 3 (a). (A) is a plan view for explaining the inclined sliding bearing when the slider moves from the initial state to one side and the other side in the first horizontal direction with respect to the guide member, (b) is a side view of (a) (C) is a cross-sectional view taken along the line C-C of (a), and (c) is a cross-sectional view taken along the line D-D of (a). (A) is sectional drawing explaining the guide member which has an engaging part, (b) is sectional drawing explaining the guiding member which has another engaging part. It is a perspective view explaining a guide member which has a closure member.

Hereinafter, a seismic isolation structure of a rack according to an embodiment of the present invention will be described based on FIGS. 1 to 5.
The rack 11 according to the present embodiment shown in FIG. 1 is provided, for example, in an automatic rack warehouse that performs unmanned operation by computer control to store and unload packages (articles). FIG. 1 shows a part of the rack 11.
The rack 11 is constructed of, for example, a pillar member or a beam member of a steel frame, and a plurality of storage shelves on which the pallets 12 on which the luggage 121 can be loaded can be placed are arranged vertically and horizontally.
The automatic rack warehouse is provided with a stacker crane (not shown) for transporting the load 121 loaded on the pallet 12 together with the pallet 12 and taking it in and out of the storage rack of the rack 11.
The stacker crane has a lift platform that moves up and down, and an arm (slide fork) that is mounted on the lift platform so as to be horizontally extensible and retractable, and lifts the lift platform while traveling parallel to the rack 11 When the elevator is fixed at a position opposite to a predetermined storage shelf, the warehousing operation for transferring the luggage 121 together with the pallet 12 from the elevator to the rack 11 while expanding and contracting the arm, and the pallet 121 of the rack 11 are palletized 12 are configured to perform an unloading operation for transferring from the rack 11 to the elevator platform side.

The rack 11 has a plurality of columns 13 erected on the floor surface of the automatic rack warehouse, and a plurality of pallet support racks 14 joined to the columns 13 to support the pallets 12.
The plurality of columns 13 are, for example, square steel pipes, and are arranged at intervals in a first horizontal direction X and a second horizontal direction Y orthogonal to the first horizontal direction X.
The pallet support rack 14 has a arm (support member) 15 and a connecting member 16 for connecting the arm 15 to the column 13. The arm 15 is, for example, a square steel pipe or the like, and is arranged to extend in the first horizontal direction X. The connection member 16 is, for example, a square steel pipe or the like, and is arranged to extend in the second horizontal direction Y.

The connecting member 16 is formed so that the dimension in the length direction (second horizontal direction Y) is shorter than the distance between the adjacent pillars 13 in the second horizontal direction Y, and the central portion in the length direction is joined to the pillars 13 . The plurality of connection members 16 are joined at the same height to the columns 13 to which they are joined.
The arm 15 is formed so that the dimension in the length direction (first horizontal direction X) is slightly larger than the distance between the connecting members 16 joined to the pillars 13 adjacent in the first horizontal direction X, and both ends in the length direction Are joined to the end of the connecting member 16 in the longitudinal direction (second horizontal direction Y). The arm 15 is joined to each end of the connecting member 16 in the second horizontal direction Y.

The pallet support rack 14 includes two connection members 16 and 16 adjacent to each other in the first horizontal direction X, a bracket 15 joined to one longitudinal end of each of the two connection members 16, and two The planar view shape is formed in the rectangular-shaped frame by the arm 15 joined to the other edge part of the length direction of each connection member 16 of this.
The arm 15 is arranged such that the upper surface 15 a and the lower surface 15 b are horizontal surfaces, and the side surfaces 15 c and 15 d are vertical surfaces facing the second horizontal direction Y.

One pallet 12 is configured to be placed on the top of each adjacent arm 15 of the adjacent pallet support racks 14.
At the upper part of the arm 15, the inclined sliding supports 1 are respectively installed, and the pallet 12 is configured to be placed on the upper part of the inclined sliding support 1.

  As shown in FIG. 2 to FIG. 4, the inclined slide bearing 1 is configured so as to be relatively displaceable in the first horizontal direction X with the guide member 2 attached to the arm 15 and the guide member 2 And (b) a slider 3 on which the connector is mounted.

The guide member 2 is a long member and is installed on the arm 15 in the direction in which the length direction is the first horizontal direction X.
The guide member 2 has a first guide member 21 attached to one side in the width direction (second horizontal direction Y) of the arm 15, and a second guide member 22 attached to the other side in the width direction. . The first guide member 21 is disposed along one corner 15e in the width direction on the upper side of the arm 15, and the second guide member 22 is the corner 15f in the upper side of the arm 15 on the other side in the width direction. Are arranged along.
The 1st guide member 21 and the 2nd guide member 22 are formed in the shape which becomes symmetrical in the cross direction. The first guide member 21 and the second guide member 22 are disposed at an interval in the second horizontal direction Y, and a groove portion 23 is formed between the first guide member 21 and the second guide member 22. There is.

  The first guide member 21 extends downward from the armrest 24 placed on one side in the width direction of the upper surface 15a of the arm 15 and the edge in one side of the armrest 24 in the width direction. It has the guide side plate part 25 facing the side surface 15c of the width direction one side of the arm 15. The first guide member 21 is formed to be substantially L-shaped in cross section.

A sliding surface 26 on which the slider 3 slides is formed on the upper surface 24 a of the bracket mounting portion 24.
The sliding surface 26 is formed in a V-shape in which the central portion 26a in the longitudinal direction is recessed below the end portions 26b and 26c in the longitudinal direction when viewed from the width direction. For this reason, the height dimension of the armrest 24 is lowest at the central portion in the length direction, and gradually increases from the central portion in the length direction toward both ends.
A portion from the end 26b on one side in the length direction of the sliding surface 26 to the central portion 26a is taken as a first inclined sliding surface 261, and from the end 26c on the other side in the longitudinal direction to the central portion 26a The portion is referred to as a second inclined sliding surface 262.

The first inclined sliding surface 261 is gradually inclined downward from one side to the other side in the length direction. The second inclined sliding surface 262 is inclined downward toward the one side from the other side in the length direction.
A connecting portion between the first inclined sliding surface 261 and the second inclined sliding surface 262 (a central portion 26 a in the lengthwise direction of the sliding surface 26) is formed at a corner portion recessed downward. As shown in FIG. 2, the inclination angle theta ₁ with respect to the horizontal plane of the first inclined sliding surface 261 and the angle of inclination theta ₂ with respect to the horizontal plane of the second inclined sliding surfaces 262, are set to the same angle theta.

The bracket mounting portion 24 is formed with a notch 241 in the lower part of the other side in the width direction over the entire length. The notches 241 are open on the other side in the width direction and on the lower side. A portion in contact with the upper surface 15 a of the arm 15 at the other side in the width direction than the notch portion 241 of the arm mounting portion 24 is a arm abutment portion 242, and the upper portion of the notch portion 241 A portion protruding from the bracket contact portion 242 on the other side in the width direction is referred to as a protruding piece 243.
The upper surface of the arm abutment portion 242 and the upper surface of the projecting piece 243 correspond to the sliding surface 26 of the first guide member 21.

The arm contact portion 242 is configured such that the lower surface 242 a (see FIGS. 2 and 4) contacts the upper surface 15 a of the arm 15 when the first guide member 21 is installed on the arm 15.
The lower surface 242a of the arm contact portion 242 has a coefficient of friction of 0.4 or more with the upper surface 15a of the arm 15 when the first guide member 21 is installed on the arm 15 and abuts on the lower surface 242a of the arm contact portion 242. It is formed on such a high friction surface.
Assuming that the surface facing the notch 241 in the arm contact portion 242 and the second horizontal direction Y is the notch opposing surface 242b, the notch opposing surface 242b is a vertical surface facing the other side in the width direction. There is.

The projecting piece 243 is formed in a plate shape in which the plate surface is directed substantially in the vertical direction. The projecting piece 243 is disposed above the notch 241, and is configured such that the lower surface 243a (see FIGS. 2 and 4) is disposed apart from the upper surface 15a of the bracket 15.
As shown in FIG. 4A, when viewed from the width direction, the lower surface 243a of the projecting piece 243 has a V-shape in which the central portion 243c in the longitudinal direction is recessed below both end portions 243d and 243e in the longitudinal direction. It is formed to be Of the lower surface 243a of the projecting piece 243, a portion from the end 243d on one side in the length direction to the central portion 243c is taken as a third inclined sliding surface 243f, and from the end 243e on the other side in the length direction to the central portion 243c The fourth portion is a fourth inclined sliding surface 243g.

The third inclined sliding surface 243 f is inclined downward gradually from one side to the other side in the length direction. The fourth inclined sliding surface 243 g is inclined downward gradually from the other side in the length direction toward the one side. The connecting portion between the third inclined sliding surface 243 f and the fourth inclined sliding surface 243 g (the central portion 243 c in the length direction of the lower surface 243 a of the projecting piece 243) is a corner portion recessed downward.
And the inclination angle theta ₃ with respect to the horizontal plane of the third inclined sliding surface 243f and the inclination angle theta ₄ with respect to the horizontal plane of the fourth inclined sliding surfaces 243 g, are set to the same angle theta. The angle θ is set to the same value as the inclination angle θ ₁ of the first inclined sliding surface 261 and the inclination angle θ ₂ (see FIG. 2) of the second inclined sliding surface 262.
The height dimension of the notch 241 (dimension between the lower surface 243 a of the projecting piece 243 and the upper surface 15 a of the arm 15) is lowest at the central portion in the length direction and becomes gradually higher toward both end portions in the length direction It has become.

As shown in FIG. 4 (b), the guide side plate portion 25 is formed in a flat plate shape whose plate surface faces the width direction of the first guide member 21. The guide side plate portion 25 is configured such that a surface 25a on the other side in the width direction (hereinafter referred to as the arm facing surface 25a) faces the side surface 15c on one side in the width direction of the arm 15.
The height dimension of the guiding side plate portion 25 is set smaller than the height dimension of the arm 15. For this reason, when the first guide member 21 is installed on the arm 15, the lower edge 25 b of the guide side plate 25 is arranged above the lower surface 15 b of the arm 15.

  The arm facing surface 25a is a high friction surface such that the coefficient of friction with the side surface 15c of the arm 15 is 0.4 or more when the first guide member 21 is installed on the arm 15 and is in contact with the side surface 15c of the arm 15. Is formed.

As described above, the second guide member 22 is formed in a shape symmetrical to the first guide member 21 in the second horizontal direction Y. The second guide member 22 is configured such that the bracket placing portion 24 is placed on the other side of the upper surface 15 a of the arm 15 in the width direction, and the guide side plate portion 25 is the other side in the width direction of the bracket placing portion 24 It is configured to extend downward from the edge of the frame 15 and to face the other side face 15 c in the width direction of the bracket 15.
About the detail of each part of the 2nd guidance member 22, explanation is omitted as what is the form which the 1st guidance member 21 reversed to the 2nd horizontal direction Y.

  The armrest placing portion 24 of the first guide member 21 installed on the arm 15 and the armrest placing portion 24 of the second guide member 22 are separated in the second horizontal direction Y (width direction). A space between the armrest 24 of the first guide member 21 and the armrest 24 of the second guide 22 is a groove 23 extending in the first horizontal direction X (length direction). The bottom surface of the groove 23 is configured by the upper surface 15 a of the arm 15.

The lower side (hereinafter, lower side 231 of the groove) of the groove 23 is formed between the notch opposite surface 242 b of the first guide member 21 and the notch opposite surface 242 b of the second guide 22. A groove upper portion 232 is formed between the projecting piece 243 of the first guide member 21 and the projecting piece 243 of the second guide member 22.
The width dimension (dimension in the second horizontal direction Y) W1 of the groove lower portion 231 is set larger than the width dimension W2 of the groove upper portion 232. The sectional shape of the groove 23 is formed in an inverted T shape.
The height dimension of the groove lower portion 231 is the lowest at the central portion in the length direction, and is gradually higher toward the both end portions in the length direction, as in the notch portion 241.

  As shown in FIG. 2 to FIG. 4, the slider 3 has one of the main body portion 31 disposed above the first guide member 21 and the second guide member 22, and one side of the main body portion 31 in the second horizontal direction Y. The first sliding side plate portion 32 which extends downward from the end and is disposed to the side of the guiding side plate portion 25 of the first guiding member 21 and the lower side from the other end of the main body 31 in the second horizontal direction Y A second sliding side plate portion 33 which extends to the side and is disposed on the side of the guiding side plate portion 25 of the second guiding member 22, and a guiding member 2 which protrudes downward from the central portion of the main body portion 31 in the second horizontal direction Y And a groove insertion portion (protrusion portion) 34 to be inserted into the groove portion 23 of FIG.

The main body portion 31 is formed in a block shape whose shape in plan view is a square. The upper surface 31a of the main body portion 31 is formed to be a flat surface, and the pallet 12 (see FIG. 4B) is mounted on the upper portion.
The upper surface 31a of the main body 31 has a coefficient of friction of 0.4 or more with the lower surface 12a of the pallet 12 in a state where the pallet 12 is placed on the upper portion and abuts against the lower surface 12a (see FIG. 4B) of the pallet 12 It is formed on such a high friction surface.

On the lower surface 31 b of the main body portion 31, an abutting surface 35 that abuts on the sliding surface 26 of the first guiding member 21 and the sliding surface 26 of the second guiding member 22 is formed.
As shown in FIG. 4A, in the contact surface 35, the central portion 35a in the first horizontal direction X is lower than the end portions 35b and 35c in the first horizontal direction X when viewed from the second horizontal direction Y. It is formed in the shape which becomes concave V shape.
The portion from the end 35b on one side in the first horizontal direction X to the central portion 35a of the contact surface 35 is the first inclined contact surface 351, and the center from the end 35c on the other side in the first horizontal direction X The portion up to the portion 35 a is referred to as a second inclined abutment surface 352.

The first inclined abutment surface 351 is inclined downward gradually from one side to the other side in the length direction. The second inclined abutment surface 352 is inclined downward toward the one side from the other side in the length direction. The connection portion between the first inclined abutment surface 351 and the second inclined abutment surface 352 (the central portion 35a of the abutment surface 35 in the first horizontal direction X) is a corner portion recessed downward.
And the inclination angle theta ₅ with respect to the horizontal plane of the first inclined abutment surface 351 and the inclined angle theta ₆ with respect to the horizontal plane of the second inclined abutment surface 352, are set to the same angle theta. The angle theta is set to the same value as the inclination angle theta ₂ of the inclination angle theta ₁ and the second inclined sliding surface 262 of the first inclined sliding surface 261.

When the slider 3 is disposed on the upper portion of the connection portion (the central portion 26 a in the length direction of the sliding surface 26) of the first inclined sliding surface 261 and the second inclined sliding surface 262, the first inclined abutment is The surface 351 is in contact with the first inclined sliding surface 261, and the second inclined abutment surface 352 is in contact with the second inclined sliding surface 262.
In addition, as shown in FIG. 5, when the slider 3 is disposed above the first inclined sliding surface 261, the first inclined abutting surface 351 abuts on the first inclined sliding surface 261, The two inclined abutment surfaces 352 are separated from the first inclined sliding surface 261. When the slider 3 is disposed above the second inclined sliding surface 262, the second inclined abutting surface 352 abuts on the second inclined sliding surface 262, and the first inclined abutting surface 351 is the second. It becomes a state with the inclined sliding surface 262. In FIGS. 5B and 5C, the slider 3 is disposed above the first inclined sliding surface 261, and the slider 3 is disposed above the second inclined sliding surface 262. The state is shown in the same drawing.

  In the present embodiment, the friction coefficient between the contact surface 35 of the main body 31 and the sliding surface 26 of the first guiding member 21 and the sliding surface 26 of the second guiding member 22 is 0.05 to 0.2 or less. It is set to become. The contact surface 35 of the main body 31 and the sliding surfaces 26 of the first guide member 21 and the second guide member 22 are set so as to reduce friction. Specifically, the coefficient of friction between the first inclined abutment surface 351 and the first inclined sliding surface 261 and the coefficient of friction between the second inclined abutment surface 352 and the second inclined sliding surface 262 are each 0.05. It is set to be less than or equal to 0.2.

  In the present embodiment, the contact surface 35 of the main body portion 31 and the sliding surface 26 of the first guiding member 21 and the sliding surface 26 of the second guiding member 22 are Teflon (registered trademark) on either or both of them. The coefficient of friction is set to be small by applying a coating or the like. The contact surface 35 of the main body 31 and the sliding surface 26 of the first guiding member 21 and the sliding surface 26 of the second guiding member 22 may be made of Teflon (registered trademark) tape or the like on both or any one of them. The coefficient of friction may be set to be small by sticking a low friction material or the like.

As shown in FIG. 4B, each of the first sliding side plate portion 32 and the second sliding side plate portion 33 is formed in a flat plate shape whose plate surface faces the second horizontal direction Y.
The first sliding side plate portion 32 has a surface 32 a on the other side in the second horizontal direction Y opposed to the surface 25 c on one side in the second horizontal direction Y of the guiding side plate portion 25 of the first guide member 21. The coefficient of friction between the surface 32a on the other side in the second horizontal direction Y of the first sliding side plate portion 32 and the surface 25c on the one side in the second horizontal direction Y of the guide side plate portion 25 of the first guide member 21 is 0. .05-0.2 or less. The first sliding side plate portion 32 and the guide side plate portion 25 are set to reduce friction.

  In the second sliding side plate portion 33, the surface 33a on one side in the second horizontal direction Y is opposed to the surface 25c on the other side in the second horizontal direction Y of the guiding side plate portion 25 of the second guide member 22. The coefficient of friction between the surface 33a on one side in the second horizontal direction Y of the second sliding side plate portion 33 and the surface 25c on the other side in the second horizontal direction Y of the guide side plate portion 25 of the second guide member 22 is 0 .05-0.2 or less. The second sliding side plate portion 33 and the guide side plate portion 25 are set to reduce friction.

In the present embodiment, the first sliding side plate portion 32 and the second sliding side plate portion 33 are provided with low friction members 321 and 331 such as Teflon (registered trademark) tape. In place of the low friction members 321 and 331 provided on the first sliding side plate portion 32 and the second sliding side plate portion 33, a low friction material may be provided on the guide side plate portion 25. In addition to the low friction members 321 and 331 provided on the sliding side plate portion 32 and the second sliding side plate portion 33, a low friction material may be provided on the guide side plate portion 25.
In addition, the first sliding side plate portion 32, the second sliding side plate portion 33, and the guide side plate portion 25 are coated with, for example, Teflon (registered trademark) on one or both of them, and the coefficient of friction is small. It may be set to be

The groove insertion portion 34 is formed over the entire first horizontal direction X in the main body portion 31.
In the groove insertion portion 34, the lower side of the tip is taken as a groove insertion portion lower portion 341, and the upper side of the base end is taken as a groove insertion portion upper portion 342.
The groove insertion portion lower portion 341 is a plate shape whose plate surface is directed substantially in the vertical direction, and the central portion in the first horizontal direction X is recessed upward relative to the both end portions in the first horizontal direction X when viewed from the second horizontal direction Y It is formed in the shape which becomes reverse V shape.
As shown in FIG. 4A, of the upper surface 341a of the groove insertion portion lower portion 341, the portion from the end portion 341b on one side in the first horizontal direction X to the central portion 341c is a third inclined contact surface 341d. A portion from the other end 341e of the horizontal direction X to the central portion 341c is referred to as a fourth inclined abutting surface 341f.

The third inclined abutment surface 341d is inclined downward gradually from one side to the other side in the length direction. The fourth inclined abutment surface 341f is inclined downward toward the one side from the other side in the length direction. The connection portion between the third inclined abutment surface 341d and the fourth inclined abutment surface 341f (the central portion 341c on one side in the first horizontal direction X of the upper surface 341a of the groove insertion portion lower portion 341) is recessed downward. It has become a corner.
And the inclination angle theta ₇ with respect to the horizontal plane of the third inclined abutment surface 341d and the inclination angle theta ₈ with respect to the horizontal plane of the fourth inclined contact surface 341f, is set at the same angle theta. The angle theta is set to the same value as the inclination angle theta ₄ of the inclination angle theta ₃ and fourth inclined sliding surface 243g of the third inclined slide surface 243 f.
The dimension W3 in the second horizontal direction Y of the groove insertion portion lower portion 341 is set smaller than the width dimension (dimension in the second horizontal direction Y) W1 of the groove lower portion 231 and larger than the width dimension W2 of the groove upper portion 232 .

  The groove insertion portion upper portion 342 is formed in a flat plate shape whose plate surface faces in the second horizontal direction Y, and connects the main body portion 31 and the groove insertion portion lower portion 341. The dimension W 4 in the second horizontal direction Y of the groove insertion portion upper portion 342 is set smaller than the width dimension W 2 of the groove portion upper portion 232.

The groove insertion portion 34 is configured such that, when inserted into the groove portion 23, the groove insertion portion lower portion 341 is disposed on the lower side of the groove portion 23, and the groove insertion portion upper portion 342 of the groove insertion portion 34 is disposed in the groove upper portion 232. It is done. The groove insertion portion 34 is inserted into the groove portion 23 from the end in the longitudinal direction (first horizontal direction X).
The groove insertion portion 34 is configured such that the outer peripheral surface thereof is separated from the inner peripheral surface of the groove portion 23 when the groove insertion portion 34 is inserted into the groove portion 23.
The slider 3 is configured to be movable in the first horizontal direction X along the sliding surface 26 of the guide member 2 in a state in which the groove insertion portion 34 is inserted into the groove 23 of the guide member 2.

In the initial state shown in FIG. 3 and FIG. 4, the slider 3 is disposed at the central portion 26 a of the sliding surface 26 of the guide member 2 in the first horizontal direction X (length direction) in the initial state shown in FIGS. .
When an external force (horizontal force, vibration) acts on the pallet 12 or the load 121 (see FIG. 1) loaded on the pallet 12, the external force is transmitted to the slider 3. Thereby, as shown in FIG. 5, the slider 3 is displaced relative to the guide member 2 in the first horizontal direction X together with the pallet 12 and the load 121, and the first horizontal along the sliding surface 26 of the guide member 2. Displace in direction X
The slider 3 slides on the sliding surface 26 of the guiding member 2 and advances and retracts while the position thereof is controlled by the inclination of the first inclined sliding surface 261 and the second inclined sliding surface 262 of the guiding member 2 . As a result, the external force acting on the pallet 12 and the load 121 is absorbed, and the drop and the load collapse of the load 121 loaded on the pallet are prevented.

Specifically, when an external force directed to one side in the first horizontal direction X acts on the slider 3, the slider 3 moves in the first horizontal direction X along the first inclined sliding surface 261, The slider 3 is in a state in which the first inclined sliding surface 261 is lifted. The slider 3 having climbed the first inclined sliding surface 261 slides down the first inclined sliding surface 261 by its own weight, returns to the central portion 26 a of the sliding surface 26, and is restored to the initial state.
Similarly, when an external force directed to the other side in the first horizontal direction X acts on the slider 3, the slider 3 moves to the other side in the first horizontal direction X along the second inclined sliding surface 262. The slider 3 rises above the second inclined sliding surface 262. The slider 3 moving up the second inclined sliding surface 262 slides down the second inclined sliding surface 262 by its own weight, returns to the central portion 26 a of the sliding surface 26, and is restored to the initial state.

Next, the operation and effects of the above-described rack isolation structure will be described using the drawings.
In the vibration isolation structure of the rack according to the present embodiment described above, the groove insertion portion 34 of the slider 3 is inserted into the groove portion 23 of the guide member 2, and the dimension W3 in the second horizontal direction Y of the groove insertion portion lower portion 341 is the groove upper portion It is formed to be larger than the dimension W2 in the second horizontal direction Y of 232. As a result, even if the groove insertion portion 34 inserted into the groove portion 23 moves upward, the lower side can not pass through the groove upper portion 232, so that the groove insertion portion 34 can be prevented from coming off the groove portion 23.
As a result, even when vertical vibration occurs, the slider 3 can be prevented from coming off the guide member 2 and falling off.

  Also, when a force exceeding 1 G directed upward is generated in the slider 3 due to the up and down vibration, the groove insertion portion 34 of the slider 3 is caught on the projecting piece 243 of the guide member 2 and eccentric bending is performed on the guide member 2 As a result, an axial force acts on the side portion of the guide member 2, and the frictional force between the guide member 2 and the arm abutment portion 242 increases. As a result, the inclined slide bearing 1 can be configured to be less likely to fall off the bracket 15.

In addition, since the slider 3 is displaceable only in the first horizontal direction X with respect to the guide member 2, when a horizontal force acts on the load 121 in the direction crossing the first horizontal direction X due to the earthquake vibration. The slider 3 can easily rotate laterally (rotation around the vertical axis) with respect to the guide member 2.
In the present embodiment, when the slider 3 tries to rotate laterally with respect to the guide member 2, the groove insertion portion 34 is caught by the groove 23, so that the slider 3 can be prevented from rotating laterally.

Further, in order to secure a wide storage portion (above the pallet 12) of the rack 11, it is preferable to suppress the height dimension of the inclined sliding bearing 1, for example, suppressing the height dimension of the main body 31 of the slider. It is conceivable. However, if the height dimension of the main body portion 31 of the slider 3 is suppressed, the weight of the slider 3 is reduced, and there is a possibility that the slider 3 may generate slight vibration due to impact or vibration due to movement of the stacker crane. .
In the present embodiment, even if the weight of the main body portion 31 is reduced by suppressing the height dimension of the main body portion 31, the groove insertion portion 34 is provided in the slider 3, so the weight of the groove insertion portion 34 The slider 3 can have an optimum weight. As a result, even if the height dimension of the main body portion 31 of the slider 3 is reduced in order to ensure a wide storage portion of the rack 11, it is possible to prevent the minute vibration from occurring in the slider 3.

The lower surface 242a of the arm contact portion 242 of the guide member 2 has a coefficient of friction with the upper surface 15a of the arm 15 in a state where the guide member 2 is installed on the arm 15 and in contact with the lower surface 242a of the arm contact portion 242. It is formed on a high friction surface to be 0.4 or more.
As a result, the friction between the guide member 2 and the arm 15 prevents the guide member 2 from sliding relative to the arm 15, so that the guide member 2 is displaced relative to the arm 15 or the guide member 2. Can be prevented from dropping out of the bracket 15.

  Further, by setting the coefficient of friction between the guide member 2 and the arm 15 to an arbitrary value of 0.4 or more, the guide member 2 does not have to be joined to the arm 15 such as welding or bolting. The guide member 2 can be easily installed on the arm 15. In the present embodiment, even if the pallet 12 on which the load 121 is loaded is not placed on the upper portion of the inclined slide bearing 1, the guide member 2 is displaced relative to the arm 15 or the guide member 2 is dropped from the arm 15. If the coefficient of friction between the guide member 2 and the arm 15 is set to an arbitrary value of 0.4 or more so as to prevent breakage, when the pallet 12 on which the load 121 is loaded is mounted on the upper portion of the inclined slide bearing 1, It is possible to prevent the guide member 2 from being misaligned with respect to the arm 15 and the guide member 2 from falling off from the arm 15 in both cases where it is not placed.

Further, the upper surface 31a of the main body portion 31 is a high friction surface such that the coefficient of friction with the lower surface of the pallet 12 is 0.4 or more in a state where the pallet 12 is placed on the upper portion and in contact with the lower surface of the pallet 12. It is formed.
As a result, the friction generated between the pallet 12 and the slider 3 suppresses slippage of the pallet 12 with respect to the slider 3. It is possible to prevent the pallet 12 from falling off the slider 3.
Also, by setting the coefficient of friction between the slider 3 and the pallet 12 to an arbitrary value of 0.4 or more, the pallet 12 can be joined to the slider 3 without welding, bolting, etc. Because it is good, the pallet 12 can be easily installed on the slider 3.
Further, when the load 121 is loaded on the pallet 12, the frictional force between the slider 3 and the pallet 12 becomes large. In this embodiment, even if the load 121 is not loaded on the pallet 12, the slider 12 and the slider 12 do not shift the position of the pallet 12 with respect to the slider 3 or prevent the pallet 12 from falling off the slider 3. If the coefficient of friction with the pallet 12 is set to an arbitrary value of 0.4 or more, the pallet 12 may be displaced relative to the slider 3 or the pallet 12 regardless of the weight of the load 121 loaded on the pallet 12. Can be prevented from dropping out of the slider 3.

  Further, since the groove insertion portion 34 is separated from the guide member 2, friction occurs between the groove insertion portion 34 and the guide member 2 when the slider 3 is displaced along the guide member 2. Even if the groove insertion portion 34 is inserted into the groove portion 23, the performance of the inclined slide bearing 1 is not affected.

  Further, the guide member 2 includes a first guide member 21 disposed on one side in the second horizontal direction Y and a second guide member 22 disposed on the other side in the second horizontal direction Y, Since the groove 23 is formed between the first guide member 21 and the second guide member 22, the groove 23 can be provided without forming the groove 23 in the guide member 2 itself.

As mentioned above, although embodiment of the seismic isolation structure of the rack 11 by this invention was described, this invention is not limited to said embodiment, It can change suitably in the range which does not deviate from the meaning.
For example, in the above embodiment, the lower surface 242a of the arm contact portion 242 of the guide member 2 is the arm 15 in a state where the first guide member 21 is installed on the arm 15 and abuts on the lower surface 242a of the arm contact portion 242. The friction coefficient with the upper surface 15a is formed to be a high friction surface of 0.4 or more, but the shape of the lower surface 242a of the arm contact portion 242 of the guide member 2 may be other than the above.
Further, the guide member 2 may be joined to the arm 15 by welding or bolt jointing, or the welding or bolting to the arm 15 by adjusting the coefficient of friction with the upper surface 15 a of the arm 15 It may be only placed, not bonding.

In the above embodiment, the upper surface 31a of the main body 31 has a coefficient of friction of 0.4 or more with the lower surface 12a of the pallet 12 in a state where the pallet 12 is placed on the upper portion and in contact with the lower surface of the pallet 12. The surface of the upper surface 31 a of the main body 31 may be other than the above.
The pallet 12 may be joined to the slider 3 using a fixing tool or the like, or the slider 3 may be adjusted by adjusting the coefficient of friction between the upper surface 31 a of the main body 31 and the lower surface of the pallet 12. Alternatively, only mounting may be performed without bonding such as welding or bolting.

Moreover, in said embodiment, although the groove insertion part 34 is separated with the internal peripheral surface of the groove part 23, as long as there is no trouble in the performance of the inclination slide bearing 1, you may contact.
In the above embodiment, the guide member 2 includes the first guide member 21 disposed on one side in the second horizontal direction Y, and the second guide member 22 disposed on the other side in the second horizontal direction Y. , And the groove 23 is formed between the first guiding member 21 and the second guiding member 22. However, the groove 23 may be formed of one member.

  In the above embodiment, the lower end of the guide side plate 25 is positioned above the lower end of the arm 15. However, as shown in FIGS. 6A and 6B, the guide side plate 25 is not limited. At the lower end portion of the lower end portion, engaging portions 41 and 42 may be provided, which engage with the lower surface 15b of the arm 15 and engage with the arm 15. With such a configuration, it is possible to prevent the guide member 2 from falling off the bracket 15.

  Further, in the above embodiment, both end portions of the groove 23 in the first horizontal direction X (length direction) are open, but as shown in FIG. 7, both ends of the groove 23 in the first horizontal direction X A closing plate 5 may be provided to close the opening. With such a configuration, when the slider 3 moves to the maximum in the first horizontal direction X with respect to the guide member 2, the groove insertion portion 34 of the slider 3 is the groove portion 23 of the guide member 2. It is possible to prevent the end of the first horizontal direction X from coming off.

1 Tilting slide bearing 2 Guide member 3 Slider 11 Rack 12 Pallet 15 Arm (supporting member)
21 first guide member 22 second guide member 23 groove portion 26 sliding surface 35 contact surface 34 groove insertion portion (protrusion portion)
121 load 231 lower groove portion 232 upper groove portion 261 first inclined sliding surface 262 second inclined sliding surface 341 lower groove insertion portion (protrusion lower portion)
342 Groove insert upper part (protrusion upper part)
351 1st inclined contact surface 352 2nd inclined contact surface X 1st horizontal direction Y 2nd horizontal direction

Claims (7)

In the seismic isolation structure of a rack on which a pallet capable of loading luggage is placed,
An inclined slide bearing is provided between the support member on which the pallet is mounted and the pallet at the top,
The inclined slide bearing includes a guide member attached to the support member;
And a slider configured to be relatively displaceable in the first horizontal direction with the guide member and on which the pallet is mounted.
The guide member has a sliding surface facing upward and on which the slider slides, and a groove extending in the first horizontal direction and opening upward.
The first sliding surface is formed on one side of the central portion in the first horizontal direction and is inclined so as to be gradually lower from the one side to the other side in the first horizontal direction. And a second inclined sliding surface which is formed on the other side of the first horizontal central portion and which inclines gradually downward from the other side of the first horizontal direction to the one side. And
In the groove portion, the dimension in the second horizontal direction intersecting the first horizontal direction in the upper portion of the groove portion is set smaller than the dimension in the second horizontal direction in the lower portion of the groove portion,
The slider has a contact surface that faces downward and contacts the sliding surface, and a protrusion that protrudes downward from the contact surface and is inserted into the groove.
The contact surface is formed closer to one side than the first horizontal central portion, and is inclined so as to be gradually lower from one side to the other side in the first horizontal direction, and the first inclined slide is formed. Formed on the other side of the first inclined contact surface in contact with the surface and the central portion in the first horizontal direction, and inclined downward from the other side of the first horizontal direction toward the one side And a second inclined abutment surface in contact with the second inclined sliding surface,
The lower portion of the protrusion on the lower side is disposed in the lower portion of the groove, and the upper portion of the protrusion on the upper side is disposed in the upper portion of the groove.
A rack isolation structure characterized in that the dimension in the second horizontal direction of the lower portion of the projecting portion is formed larger than the dimension in the second horizontal direction of the upper portion of the groove portion. The guide member is in contact with the support member,
The vibration isolation structure of a rack according to claim 1, wherein a friction coefficient between the guide member and the support member is 0.4 or more. The slider abuts on the pallet,
The vibration isolation structure of a rack according to any one of claims 1 and 2, wherein a friction coefficient between the slider and the pallet is 0.4 or more.   The vibration isolation structure of a rack according to any one of claims 1 to 3, wherein the guide member has a closing member that closes both ends of the groove in the first horizontal direction.   The vibration isolation structure of the rack according to any one of claims 1 to 4, wherein the guide member has an engagement portion that engages with the support member.   The vibration isolation structure of the rack according to any one of claims 1 to 5, wherein the protrusion is separated from the inner circumferential surface of the groove.   The guide member has a first guide member disposed on one side of the second horizontal direction, and a second guide member disposed on the other side of the second horizontal direction, and the first guide member The vibration isolation structure of the rack according to any one of claims 1 to 6, wherein the groove is formed between the second guide member and the second guide member.

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