JP5003897B2 - Buried rail device - Google Patents

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 is a method in which support members attached at appropriate intervals in the length direction of the rail are fixed on an existing concrete layer by anchor bolts, and the surface and surface of the rail are fixed. A floor-forming concrete layer is placed on the existing concrete layer so as to be one. Thus, in this conventional buried rail device, as described in Patent Document 1, overhanging flange portions that are continuous in the length direction are provided on both sides of the rail, and the support member and the support member The supporting member is attached to the rail by sandwiching the protruding flange portions on both the left and right sides of the rail between a pair of left and right pressing members attached to the top with bolts and nuts, or as described in Patent Document 2 In addition, the left and right side surfaces of the rail are recessed in a mountain shape over the entire length, and the left and right side surfaces of the rail are clamped between a pair of left and right clamping members that are attached to the support member with anchor bolts and nuts. By doing so, the support member is attached to a rail.
JP-A-4-258401 JP 2005-105560 A

  In the configuration in which the protruding flange portions on the left and right sides of the rail described in Patent Document 1 are formed, the maximum width of the rail at the position of the protruding flange portion is significantly larger than the width of the wheel support surface on the surface necessary for the rail. And a pair of left and right holding members and bolts and nuts for mounting these holding members are required, which not only increases the weight of the rail itself, but also increases the total number of parts and reduces the cost of rail installation. There is a drawback of becoming higher. Moreover, in the structure which clamps a rail from patent document 2 from both right and left sides, although the weight increase of a rail is avoided, since a pair of right and left clamping members are required, the point which raises rail installation cost is unavoidable.

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 embedded rail apparatus which embedded the rail 4 (4A-4C) under the floor surface so that the rail surface 8 may become the floor surface 3, Comprising: Below rail 4 (4A-4C) The side surface 7 is provided with a mounting groove 11 having a medium cross-sectional shape that is continuous in the rail length direction, and a head 15a of a bolt 15 is fitted to the inner wide portion 13 of the mounting groove 11 so as to be movable in the rail length direction. And the bottom of the rail 4 (4A to 4C) by the screw shaft portion 15b of the bolt 15 projecting downward from the narrow width portion 12 of the mounting groove 11 and the nut 16 screwed into the screw shaft portion 15b. The support member 14 is attached to the side, and this support member 1 And the embedded rail arrangement formed by laying the rails 4 by the anchor bolts 17 (4A-4C) to existing concrete layer 19 under the floor, the rail 4 lower surface 7 of the (4A-4C) is, in the rail width In the cross-sectional shape in the direction, the arcuate surface is convex downward, and the mounting concave groove 11 is provided at the lowest position of the arc-shaped lower side surface 7 .

The buried rail device according to claim 2 is a buried rail device in which the rail 4 (4A to 4C) is buried below the floor surface so that the rail surface 8 is flush with the floor surface 3. (4A-4C) On the lower side surface 7 of the rail, the mounting groove 11 having a continuously expanding cross-sectional shape extending in the rail length direction is provided, and the head 15a of the bolt 15 is railed to the inner wide portion 13 of the mounting groove 11. The rail 4 is fitted by a screw shaft portion 15b of the bolt 15 and a nut 16 screwed to the screw shaft portion 15b. The screw shaft 15b projects downward from the narrow width portion 12 of the mounting groove 11. In a buried rail device in which a support member 14 is attached to the lower side of (4A to 4C), and the rail 4 (4A to 4C) is laid on an existing concrete layer 19 below the floor surface by the support member 14 and an anchor bolt 17. The rail The lower side surface (4A to 4C) is formed in an inverted inverted mountain shape in the cross-sectional shape in the width direction of the rail rail 4 (4A to 4C). The mounting groove 11 is provided.

When carrying out the present invention, specifically, as described in claim 3 , the head portion 15 a of the bolt 15 can only move in the rail length direction on the inner wide portion 13 of the mounting groove 11. The head 15c of the bolt 15 is parallel to the length direction of the mounting groove 11, as described in claim 4. It can be inserted into the wide inner portion 13 from the narrow portion 12 of the mounting groove 11 in the direction, and both ends 22a and 22b in the length direction by rotation are opposite side surfaces of the inner wide portion 13 of the mounting groove 11. It can be configured in a horizontally long T shape that abuts against 13a and 13b and is prevented from rotating.

  According to the buried rail device according to the first aspect of the present invention, since the mounting concave groove having a medium cross-sectional shape is provided on the lower side surface of the rail, the width of the rail can be minimized. Although the thickness of the mounting groove is required, the material can be reduced and the weight can be reduced by forming the mounting groove. it can. In addition, the support member can be easily and easily attached to any position in the length direction of the rail using only bolts and nuts. Compared to the conventional configuration that requires a pair of left and right pressing members and clamping members, the support member The number of points can be greatly reduced to lower the rail laying cost.

Furthermore, according to the structure of this invention of Claim 1 or 2, since the lower side surface in the longitudinal cross-sectional shape of a rail width direction is an arc shape or inverted mountain shape which protrudes downward, rail width is the same. Then, the installation area with respect to the concrete layer or filling resin layer which supports the said rail becomes large, and the surface pressure per unit area becomes small. In addition, air bubbles inside concrete or synthetic resin placed on the existing concrete layer so as to fill the rail are guided upward along the lower side of the arc or inverted mountain shape of the rail to the left and right sides. Since there is very little staying in contact with the lower side surface, coupled with a decrease in surface pressure on the lower side surface of the rail, there is almost no possibility of causing irregular settlement of the rail.

Moreover, according to the structure of Claim 3 , a support member can be attached to any position in the length direction of the rail by using a commercially available general-purpose bolt having a square columnar or hexagonal column head as it is. Since the bolt does not rotate with respect to the rail when the support member is attached, the fastening operation of the support member with the nut can be performed very easily. Furthermore, according to the configuration of the fourth aspect , it is not necessary to assemble a necessary number of bolts in the mounting groove from the end of the long rail, and the bolts can be mounted at the mounting position of the support member. Since the bolt can be assembled in the concave groove and the bolt does not rotate with respect to the rail, the mounting operation of the support member can be performed very easily, easily and efficiently.

  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 grooved rail 4A has a mounting recess which is continuous over the entire length in the rail length direction at the lowest position of the arc-shaped lower side surface 7 (the central lower side surface in the width direction). A groove 11 is provided. The mounting concave groove 11 is a so-called widened cross-sectional shape, which includes a narrow width portion 12 opened in the arc-shaped lower side surface 7 and a wide width portion 13 having a rectangular cross section communicating with the back side of the narrow width portion 12. It has a ant groove shape.

  Rail support members 14 are attached to the grooved rail 4A at both ends in the length direction and at appropriate intermediate positions. Each rail support member 14 is made of a belt-like plate material that crosses the lower side of the grooved rail 4A, and a bolt 15 is inserted downward from above at the center position. A nut 16 is screwed. The hexagonal column-shaped head portion 15a of the bolt 15 has a wide width of the mounting groove 11 from one end of the grooved rail 4A in a state where the screw shaft portion 15b projects downward from the narrow width portion 12 of the mounting groove 11. It fits in the part 13 and can be freely moved along the concave groove 11 for attachment.

  That is, each rail support member 14 attached to the lower side of the grooved rail 4A via the bolt 15 and the nut 16 is moved to an arbitrary position in the lengthwise direction of the grooved rail 4A with the nut 16 loosened. be able to. Thus, as shown in FIG. 5A, the hexagonal column-shaped head portion 15a of the bolt 15 has two parallel side surfaces adjacent to both side surfaces 13a and 13b of the wide width portion 13 of the mounting groove 11. Each rail support member 14 can be moved to any position in the length direction of the grooved rail 4A because it can be moved along the groove 11 but is held in the mounting groove 11 so that it cannot rotate. Then, the nut 16 is rotated in the tightening direction, and the grooved rail 4A (both shoulders of the narrow width portion 12 of the mounting groove 11) and the rail support member 14 are connected to the head 15a of the bolt 15 and the nut. 16, each rail support member 14 can be fixed to the grooved rail 4A.

  When the rail support members 14 are fixed at predetermined positions in the rail length direction of the grooved rail 4A as described above, the anchor bolts 17 and the fastening nuts 18 are used for the left and right ends of the rail support members 14, respectively. Then, it is fixed to a predetermined height above the existing concrete layer (primary concrete layer) 19, and the grooved rail 4A is supported so that the rail surface 8 is horizontal. In this state, the floor surface forming concrete layer (secondary concrete layer) 20 is placed on the existing concrete layer 14 so that the floor surface 3 formed by the floor surface forming concrete layer 20 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 20 is convex downward. The loads of the movable racks 2A and 2B received from the hooked wheel 5A are dispersed and transmitted to the floor surface forming concrete layer 20, and the surface pressure per unit area between the floor surface forming concrete layer 20 and the lower side surface 7 is reduced. In addition, since the bubbles in the floor-forming concrete layer 20 that has been cast are easily guided to the upper left and right sides along the arc-shaped lower side surface 7, it is almost impossible for the bubbles to stay below the arc-shaped lower side surface 7. Disappear.

  In the above embodiment, since the rail support member 14 is attached to the lower side of the grooved rail 4A with a single bolt 15, the rail support member 14 can rotate around the bolt 15, and therefore, the nut. 16, when the rail support member 14 is fastened to the grooved rail 4 </ b> A, the nut 16 must be fastened by setting the direction so that the rail support member 14 is perpendicular to the rail 4 </ b> A. In order to solve this problem, a single rail support member 14 is grooved with a plurality of (for example, two) bolts 15 in which the head portion 15a is fitted into the wide width portion 13 of the mounting groove 11. It can be configured so that it can be fixed in a transverse direction perpendicular to the rail 4A.

  Although the grooved rail 4A for supporting and guiding the hooked wheel 5A has been described, the rail for supporting and guiding the hookless wheel is a rail having a flat rail surface 8 on which no groove is formed as shown in FIG. It can be implemented as 4B. Moreover, as shown in FIG. 4, it can also be implemented as a rail 4C having an inverted mountain-shaped lower side surface 21 instead of the arc-shaped lower side surface 7. A groove 10 for guiding the hooked wheel 5A can also be formed in the rail 4C as indicated by a virtual line.

  Further, as the head of the bolt 15, a hexagonal column-shaped head 15a whose two parallel side surfaces are adjacent to both side surfaces 13a and 13b of the wide portion 13 of the mounting groove 11 is illustrated, for example, as shown in FIGS. 5B and 5C. Thus, the bolt 15 provided with the horizontally long T-shaped head 15c can also be used. The horizontally long T-shaped head portion 15c can be inserted into the wide inner portion 13 from the narrow width portion 12 of the mounting groove 11 in a direction parallel to the length direction of the mounting groove 11 as shown in FIG. 5B. 5C, both ends 22a and 22b in the length direction come into contact with both side surfaces 13a and 13b of the inner wide portion 13 of the mounting groove 11 and are prevented from rotating. . When the bolt 15 having the horizontally long T-shaped head portion 15c is used, the bolt 15 can be assembled to the mounting groove 11 at any position in the middle of the rails 4A to 4C in the length direction.

Fig. A is a schematic side view showing the entire mobile rack device, Fig. B is a longitudinal perspective view showing a rail used in an embodiment of the present invention, and Fig. C is a longitudinal front view of a main part showing an embodiment of the present invention. FIG. 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 perspective view which shows the 1st modification of a rail. It is a vertical perspective view which shows the 2nd modification of a rail. Fig. A is a bottom view showing the relationship between a bolt having a hexagonal column head and a mounting groove on the rail side, and Fig. B is a bolt having a horizontal T-shaped head and a mounting groove on the rail side. The bottom view which shows the 1st step of engagement and C figure are bottom views which show the 2nd step.

Explanation of symbols

1A, 1B Fixed rack 2A, 2B Mobile rack 3 Floor surface 4 Rail 4A Grooved rail 4B, 4C Grooveless rail 5 Wheel 5A Hooked wheel 7 Arc-shaped lower side surface 8 Rail surface 10 Groove 11 Mounting concave groove 12 For mounting Narrow groove portion 13 Wide groove portions 13a and 13b of mounting groove both side surfaces 14 of mounting groove wide portion Rail support member 15 Bolt 15a Hexagonal column head 15b Bolt screw shaft portion 15c Bolt sideways T-shaped heads 16, 18 Nut 17 Anchor bolt 19 Existing concrete layer (primary concrete layer)
20 Floor forming concrete layer (secondary concrete layer)
21 Inverted mountain-shaped lower side surfaces 22a and 22b of rails Both ends of a horizontally long T-shaped head

Claims (4)

An embedded rail device in which the rail is embedded under the floor so that the rail surface is flush with the floor, and a mounting groove with a cross-section extending in the rail length direction is provided on the lower side of the rail. The bolt head is fitted to the inner wide portion of the mounting groove so as to be movable in the rail length direction, and the screw shaft portion of the bolt projecting downward from the narrow portion of the mounting groove and the screw. In an embedded rail device in which a support member is attached to the lower side of a rail with a nut screwed to a shaft portion, and the rail is laid on an existing concrete layer below the floor surface with the support member and an anchor bolt , A buried rail device , wherein the side surface is formed as a downwardly convex circular arc surface in a cross-sectional shape in the width direction of the rail, and the mounting concave groove is provided at the lowest position of the circular arc lower side surface. An embedded rail device in which the rail is embedded under the floor so that the rail surface is flush with the floor, and a mounting groove with a cross-section extending in the rail length direction is provided on the lower side of the rail. The bolt head is fitted to the inner wide portion of the mounting groove so as to be movable in the rail length direction, and the screw shaft portion of the bolt projecting downward from the narrow portion of the mounting groove and the screw. In an embedded rail device in which a support member is attached to the lower side of a rail with a nut screwed to a shaft portion, and the rail is laid on an existing concrete layer below the floor surface with the support member and an anchor bolt, The buried rail device has a side surface formed in an inverted inverted mountain shape in a cross-sectional shape in the width direction of the rail, and the mounting groove is provided on the lowest flat surface of the inverted mountain-shaped lower side surface . 3. The embedded rail device according to claim 1, wherein the head of the bolt has a quadrangular columnar shape or a hexagonal columnar shape that can be moved only in the rail length direction but cannot rotate in the inner wide portion of the mounting concave groove. . The head portion of the bolt can be inserted from the narrow portion of the mounting groove into the inner wide portion in a direction parallel to the length direction of the mounting groove, and both ends in the length direction are rotated by the rotation. The embedded rail device according to claim 1 , wherein the embedded rail device is configured in a horizontally long T shape that is in contact with both side surfaces of the inner wide portion of the mounting groove and is prevented from rotating.

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