JP2008206755A - Embedded rail device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent irregular sinking of a rail by dispersing the load acting on the lower surface of the rail to reduce the face pressure and inhibiting retention of bubbles in the cast concrete on the lower surface of the rail in an embedded rail device to be used as a guide rail for a movable rack set in such a way as horizontally movable on the floor surface. <P>SOLUTION: Rails 4A and 4C are embedded in the embedded rail device in such a way that the rail surface 8 is flushed with the floor surface 3. The lower surface 7 as the shape of the vertical cross section in the direction of the width of the rail is circular arc-shaped projecting downward. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an embedded rail device that can be used as a guide rail for a movable rack that is installed to be laterally movable on a floor surface.

An embedded rail device used as a guide rail for a moving rack supports a rail horizontally at a predetermined height on a concrete layer via a gate-shaped support member, and is flush with the surface of the rail. The floor surface and the rail surface are placed in a buried rail device described in Patent Document 1 formed by placing a floor surface forming concrete layer on the existing concrete layer, or in a groove formed in the floor surface forming concrete layer. A buried rail device described in Patent Document 2 is known in which a rail is supported so as to become one, and a synthetic resin is filled and cured in the groove. In each case, the rail has a flat bottom surface. In general, the horizontal plane has a rectangular longitudinal section in the rail width direction.
JP-A-4-258401 Japanese Patent Laid-Open No. 11-018850

  In the buried rail device formed by embedding the conventional rectangular cross-section rail as described above, since the lower side surface of the rail is a flat horizontal surface, the unit area generated on the lower side surface of the rail due to the load received from the wheels of the moving rack to be supported The contact pressure per contact increases. In order to reduce the surface pressure per unit area generated on the rail lower surface, the rail width must be wider than the wheel width and the rail thickness must be increased to increase the bending rigidity in the rail width direction. Of course, the cost of laying the rails increases as well as the cost of the rails. In addition, since the lower surface of the rail is a flat horizontal surface, bubbles in the concrete placed on the existing concrete layer and bubbles in the synthetic resin filled in the groove are buried under the rail to fill the rail. In combination with a large surface pressure per unit area generated on the lower side surface of the rail, the rail may be irregularly settled, which may hinder the traveling of a moving rack or the like.

  An object of the present invention is to provide an embedded rail device that can solve the conventional problems as described above, and the embedded rail device according to claim 1 uses the reference numerals of the embodiments described later. If it attaches and shows, it is an embedding rail device which embedded rails 4A and 4C so that rail surface 8 may become flush with floor surface 3, Comprising: The lower side 7 in the longitudinal section shape of a rail width direction is projected downward It has a configuration formed in an arc shape.

  In carrying out the present invention described in claim 1, specifically, as described in claim 2, the arc-shaped lower side surface 7 at appropriate intervals in the rail length direction is formed in a portal shape. The rail support member 11 is fitted into a downwardly convex arcuate portion 11c formed at the center portion and welded to each other, and the left and right ends (mounting plate portion 11b) of the rail support member 11 are fixed to the existing concrete layer 14. Then, the floor forming concrete layer 15 can be placed on the existing concrete layer 14 so as to be flush with the rail surface 8.

  The embedded rail device according to claim 3 is an embedded rail device in which the rail 4B is embedded so that the rail surface 8 is flush with the floor surface 3, and the lower side surface 18 in the longitudinal sectional shape in the rail width direction. Is formed in an inverted inverted mountain shape.

  In practicing the present invention having the structure described in claim 3, specifically, as described in claim 4, the inverted mountain-shaped lower side surface 18 at positions at appropriate intervals in the rail length direction is formed as a gate shape. The rail support member 11 is fitted to a downwardly projecting inverted chevron 11d formed at the center of the rail support member 11 and welded to each other, and the left and right ends (mounting plate portion 11b) of the rail support member 11 are fixed to the existing concrete layer 14. Then, the floor forming concrete layer 15 can be placed on the existing concrete layer 14 so as to be flush with the rail surface 8.

  According to the buried rail device according to the first or third aspect of the present invention, since the lower side surface in the longitudinal cross-sectional shape in the rail width direction is a downwardly convex arc shape or inverted mountain shape, the rail width is the same. If it exists, the installation area with respect to the concrete layer or filling resin layer which supports the said rail will become large, and the surface pressure per unit area will become small. Moreover, air bubbles in the concrete cast on the existing concrete layer to fill the rail or air bubbles in the synthetic resin filled in the groove are along the lower surface of the arc shape or the inverted mountain shape of the rail. Since it is guided to the upper side of the right and left sides and stays in contact with the lower side surface of the rail, the possibility of causing the irregular settlement of the rail is almost eliminated in combination with the reduction of the surface pressure on the lower side surface of the rail. Of course, it is not necessary to increase the width and thickness of the rail, so that the cost is not increased.

  In addition, according to the structure of Claim 2 or 4, although the rail lower surface is a rail which is a convex arcuate shape or an inverted mountain shape, the rail is placed on the existing concrete layer (primary concrete layer). The floor surface forming concrete layer (secondary concrete layer) to be laid can be easily embedded using the rail lower surface. In particular, according to the configuration of the fourth aspect, the posture of the rail is determined simply by fitting the lower side surface of the inverted mountain shape of the rail to the inverted mountain shape portion of the rail support member, and the rail is welded to the rail support member in a predetermined posture. Can be done easily.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1A, 1A and 1B are fixed racks, and 2A and 2B are mobile racks installed between the fixed racks 1A and 1B. Each of the movable racks 2A and 2B rolls on the rails 4 and a plurality of rails 4 embedded in the floor between the fixed racks 1A and 1B so that the rail surface is at the same level as the floor surface 3. Thus, the fixed racks 1A and 1B are supported so as to be laterally movable by the wheels 5 pivotally supported on the bottoms of the movable racks 2A and 2B. Although a detailed drawing is omitted because it is a conventionally known mobile rack device, a plurality of rails 4 are provided at appropriate intervals in the depth direction of the inter-rack passage 6 perpendicular to the moving direction of the moving racks 2A and 2B. Are arranged in parallel, each moving rack 2A, 2B is provided with a plurality of wheels 5 for each rail 4, and at least one of the wheels 5 provided in each moving rack 2A, 2B is motor-driven. . Further, the plurality of wheels 5 that roll on the at least one rail 4 are provided with hooked wheels, and the plurality of hooked wheels and the corresponding rails 4 are engaged with each other, so that The positions of the movable racks 2A and 2B in the depth direction of the passage 6 are restricted.

  FIG. 1B and FIG. 2 show a flanged wheel 5 </ b> A in the wheel 5 and a grooved rail 4 </ b> A that supports and guides the flanged wheel 5 </ b> A in the rail 4. The grooved rail 4A is a rail whose longitudinal cross-sectional shape in the rail width direction has a rounded arc shape with the lower side surface 7 in the longitudinal cross-sectional shape in the rail width direction having a downwardly convex arc shape and a flat rail surface 8. Thus, a groove 10 is formed in the central position of the flat rail surface 8 in the width direction so that the central flange 9 of the flanged wheel 5A is loosely fitted.

  The laying operation of the grooved rail 4A will be described. The rail support members 11 are fixed to the grooved rail 4A at positions of the arc-shaped lower side surface 7 at appropriate intervals in the rail length direction. The rail support member 11 is formed by bending a belt-like iron plate into a gate shape (precisely a hat shape) so as to have a lower mounting plate portion 11b on both the left and right sides of the rail support plate portion 11a. A downwardly convex arc-shaped portion 11c is formed at the center of the support plate portion 11a, and the lower half of the arc-shaped lower side surface 7 of the grooved rail 4A is in surface contact with the arc-shaped portion 11c. Both are fixed to each other by welding in a state of being fitted in a state.

  Thus, the mounting plate portions 11b on both the left and right sides of the rail support member 11 fixed at appropriate intervals in the rail length direction of the grooved rail 4A are used using the anchor bolt 12 and the fastening nut 13. The grooved rail 4A is supported so that the rail surface 8 is horizontal by fixing it to a predetermined height above the existing concrete layer (primary concrete layer) 14. In this state, the floor surface forming concrete layer (secondary concrete layer) 15 is placed on the existing concrete layer 14 so that the floor surface 3a formed by the floor surface forming concrete layer 15 and the rail surface 8 are flush with each other. To cast.

  As shown in FIG. 2B, the grooved rail 4A in the buried rail device configured as described above has an arc shape in which the lower side surface 7 supported by the floor surface forming concrete layer 15 is convex downward. Compared with the flat horizontal lower side surface 17 of the grooved rail 16 in the conventional buried rail device of the same width rectangular cross section shown in FIG. 7, the lower side surface 7 supported by the floor surface forming concrete layer 15 is widened. The load of the movable racks 2A and 2B received from the attached wheels 5A is dispersed, and the surface pressure per unit area between the floor surface forming concrete layer 15 and the lower side surface 7 is reduced. Further, in the grooved rail 16 in the conventional buried rail device having the rectangular cross section shown in FIG. 7, the bubbles 15 a in the cast concrete forming the floor surface forming concrete layer 15 are likely to stay below the flat horizontal lower side surface 17. In the grooved rail 4A according to the present invention having the arc-shaped lower side surface 7 shown in FIG. 2B, the bubbles in the cast concrete are easily guided upward along the arc-shaped lower side surface 7 on both the left and right sides. Air bubbles in the cast concrete hardly remain below the lower side surface 7.

  The rail in the embedded rail device of the present invention is not limited to the rail having the arc-shaped lower side surface 7 shown in the above embodiment. For example, as shown in FIG. 3, an inverted mountain-shaped lower side surface 18 can be formed instead of the arc-shaped lower side surface 7. In this case, as shown in FIG. 4, low vertical wall surfaces 19 may be formed on both sides of the inverted mountain-shaped lower side surface 18. In the case of the grooved rail 4 </ b> B having the inverted mountain-shaped lower side surface 18, the rail supporting plate 11 a of the rail support member 11 is formed with an inverted mountain-shaped portion 11 d that fits the lower half of the inverted mountain-shaped lower side surface 18. good. Thus, the rail surface 8 of the grooved rail 4B can be brought into contact with the rail support member 11 simply by fitting the lower half of the inverted mountain shape lower side surface 18 of the grooved rail 4B to the inverted mountain shape portion 11d of the rail support member 11. Since it can be configured to be parallel to a virtual plane connecting the left and right rail supporting plate portions 11a, it is easy to attach the rail supporting member 11 to the grooved rail 4B by welding.

  In the above embodiment, the grooved rails 4A and 4B for supporting and guiding the flanged wheel 5A are exemplified. However, as shown in FIG. 5, the present invention is applied also to the grooveless rail 4C for supporting and guiding the flangeless wheel. Can be implemented. Of course, in FIG. 5, a rail having the arc-shaped lower side surface 7 is illustrated as the grooveless rail 4C, but a grooveless rail having the inverted mountain-shaped lower side surface 18 as shown in FIG. Can be implemented.

  Further, as shown in FIG. 6, when the floor surface 3 is formed with the existing concrete layer 14, a groove 20 is formed on the floor surface 3 of the existing concrete layer 14, and the present invention described in the above embodiments is applied. Such a rail, for example, a grooveless rail 4C having an arcuate lower side surface 7 is attached to the rail surface 8 with a mounting screw 21 so as to be detachable. By temporarily fixing the floor surface 3 of the existing concrete layer 14 on both sides with concrete nails 23 or the like, the rail surface 8 is suspended in the recessed groove portion 20 so as to be flush with the floor surface 3, and in this state, the recessed groove portion 20 is suspended. The grooveless rail 4C can also be embedded and fixed in the recessed groove portion 20 by filling and curing the synthetic resin 24 therein and then removing the rail suspension member 22. In this case, mortar can be filled and cured instead of the synthetic resin 24. That is, the embedding method of the grooved rails 4A and 4B and the grooveless rail 4C of the present invention having the arc-shaped lower side surface 7 or the inverted mountain-shaped lower side surface 18 is not limited.

FIG. 1A is a schematic side view showing the entire mobile rack device, and FIG. B is a longitudinal front view of the main part showing an embodiment of the present invention. FIG. 1A is a longitudinal side view of a main part showing an embodiment of the present invention together with a wheel, and FIG. B is a front elevational view of the main part. It is a vertical front view of the principal part which shows 2nd embodiment. It is a vertical front view of the principal part which shows 3rd embodiment. It is a vertical front view of the principal part which shows 4th embodiment. It is a vertical front view of the principal part which shows 5th embodiment. It is a vertical front view of the principal part explaining a conventional structure.

Explanation of symbols

1A, 1B Fixed racks 2A, 2B Mobile rack 3 Floor surface 4 Rails 4A, 4B Grooved rail 4C Grooveless rail 5 Wheel 5A Hooked wheel 7 Arc-shaped lower side surface 8 Rail surface 10 Groove 11 Rail support member 11a For rail support Plate portion 11b Mounting plate portion 11c Arc-shaped portion 11d Inverted mountain-shaped portion 12 Anchor bolt 14 Existing concrete layer 15 Floor surface forming concrete layer 18 Inverted mountain-shaped lower side surface 19 Vertical wall surface 20 Groove portion 21 Mounting screw 22 Rail suspension member 23 Concrete nail 24 Synthetic resin

Claims (4)

  An embedded rail device in which the rail is embedded so that the rail surface is flush with the floor surface, and the lower surface of the longitudinal cross-sectional shape in the rail width direction is formed in a downwardly convex arc shape. .   This arc-shaped lower side surface at appropriate intervals in the rail length direction is fitted to a downwardly projecting arc-shaped portion formed at the center of the gate-shaped rail support member and welded together. The buried rail device according to claim 1, wherein both left and right ends of the support member are fixed to an existing concrete layer, and a floor-forming concrete layer is placed on the existing concrete layer flush with the rail surface. .   An embedded rail device in which a rail is embedded so that a rail surface is flush with a floor surface, wherein the lower side surface in a longitudinal cross-sectional shape in the rail width direction is formed in an inverted inverted mountain shape.   The above-mentioned inverted mountain-shaped lower side surfaces at appropriate intervals in the rail length direction are welded to each other by being fitted to the inverted convex mountain-shaped portion formed at the center of the gate-shaped rail support member. The embedded rail device according to claim 3, wherein both left and right ends of the rail are fixed to an existing concrete layer, and a floor surface forming concrete layer is placed on the existing concrete layer flush with the rail surface.

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