JP2009018895A - Rail fixing device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a robust rail fixing device capable of coping with settlement and upheaval of the ground. <P>SOLUTION: This rail fixing device for fixing a rail 4 being a track of a tracked bogie is provided with a basic body 110 having a locking part 112 and fixed to a reference face by an anchor bolt 30 fastened to the reference face, a mounting body 120 on which the rail 4 is detachably mounted, a fixing body 130 locking its one end part in the locking part 112 and fixing the mounting body 120 to the basic body 110, and a spacer 140 arranged between the basic body 110 and the mounting body 120 to decide the distance between the basic body 110 and the mounting body. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rail fixing device for fixing a rail which is a track of a tracked carriage, and a rail fixing method.

  2. Description of the Related Art Conventionally, carts that automatically carry luggage in warehouses or factories sometimes run on rails laid on a reference surface such as the ground or floor. In particular, when carrying a heavy object, the carriage often travels on a track formed by rails. As shown in FIG. 7, the rail is attached to a rail fixing device 700 for fixing the rail 704. The rail fixing device 700 is directly fixed to the reference plane using anchor bolts 703 implanted in the reference plane. In addition, the reference plane is normally horizontal, but it is necessary to further improve the horizontal accuracy of the rail in order for the carriage to travel on the rail stably at high speed. Therefore, the shim 740 is sandwiched between the rail fixing device and the reference surface, and the levelness is finely adjusted.

Patent Document 1 describes a rail fixing device in which screw holes extending in the vertical direction are provided at both ends. This rail fixing device employs a mode in which a bolt is attached to the screw hole of the rail fixing device from below and the head of the bolt is fixed to a reference plane. If such a rail fixing device is employ | adopted, the space | interval of the head of a bolt and a rail fixing device can be adjusted by turning a volt | bolt with respect to a rail fixing device. That is, the distance between the reference surface on which the bolt head is fixed and the rail fixing device can be easily adjusted.
Japanese Utility Model Publication No. 4-33701

  However, the level of the reference surface such as the ground surface or the floor surface may be lost from the state in which the rail is first laid due to ground subsidence or the like. In particular, there may be a case where only a part of the reference surface called unequal settlement sinks greatly, and the rail may be bent.

  In this case, if the rail fixing device explained in the previous stage of the background art, it can cope with ground subsidence by changing the number and thickness of shims, but if the ground subsidizes more than the length of the anchor bolts installed Since the shim reaches above the already anchored anchor bolt, it becomes impossible to fix the rail fixing device with the anchor bolt.

  In this case, a long anchor bolt must be newly planted. In order to newly install the anchor bolt, it is necessary to construct the new reference surface after removing the rail and the like, and much labor and cost are required.

  Further, the rail fixing device described in Patent Document 1 described later in the background art can easily cope with ground subsidence only by changing the screwing amount of the bolt or the length of the bolt itself.

  However, the method of adjusting the height of the rail fixing device by the screwing amount of the bolt makes it difficult to accurately adjust the position of the rail fixing device such as the presence of backlash, and also causes slack due to vibration caused by passing of the carriage. There is a risk. Moreover, since the rail will be inclined unless the screwing amounts of the bolts screwed to both ends of the rail are matched, an operation process for adjusting the screwing amounts of the two rails is required.

  Furthermore, the rail is fixed to the rail fixing device which uses two bolts as columns and is arranged in a bridge between them. Therefore, as the length of the two bolts becomes longer by adapting to ground subsidence, the overall structure becomes fragile, causing abnormal vibration and the like.

  The present invention has been made in view of the problems of the two rail fixing devices described above, and is intended to provide a rail fixing device that can easily cope with the occurrence of ground subsidence and can maintain high structural strength. To do.

  In order to achieve the above object, a rail fixing device according to the present invention is a rail fixing device for fixing a rail which is a track of a tracked carriage, and has an anchor portion and is anchored on a reference plane. A base fixed to a reference surface by a bolt, a mounting body to which a rail is detachably mounted, a fixed body whose one end is locked to the locking portion and fixes the mounting body to the base, and the base And a spacer for determining a distance between the base and the mounting body.

  As a result, since the base is always fixed to the reference surface, once the base is fixed by the anchor bolt, it is not necessary to replace the anchor bolt even if ground subsidence occurs.

  The height of the attachment body is adjusted by a spacer disposed between the base body and the attachment body. Therefore, the load applied from the rail is firmly received by the spacer, and even if the length of the fixed body for fixing the attachment body is long, the overall structural strength is not greatly reduced.

  Further, the base body includes a first engagement portion on an upper surface portion of the base body, and the spacer is engaged with the first engagement portion on a lower surface portion of the spacer, and a rail is laid. A second engagement portion for restricting relative movement between the base and the spacer in a first direction which is an intersecting direction; and a third engagement portion on an upper surface portion of the spacer. A fourth engagement portion that engages with the third engagement portion on the lower surface portion of the attachment body and restricts relative movement between the spacer and the attachment body in the first direction; and an upper surface of the attachment body It is preferable to have two restriction walls that are arranged so as to sandwich the rail to be attached and project upward.

  As a result, even if the number and thickness of spacers increase due to ground subsidence, etc., the rail fixing device does not move in the direction crossing the direction in which the rail is laid, so the rail fixing state is stable and the rail fixing device The structural strength of can be increased.

  In addition, even when adjusting the level of the rail due to ground subsidence or the like, the parallelism of the two rails is adjusted because the positional relationship of the mounting body in the first direction with respect to the base body is maintained even if the spacer is inserted or removed. The occurrence of work can be suppressed as much as possible.

  Further, the above object is a rail fixing method for fixing a rail which is a track of a tracked carriage, wherein a base fixing step for fixing a base having a locking portion with an anchor bolt planted on a reference surface, A mounting body placement step for placing a mounting body that is detachably mounted above the base body, a spacer is disposed between the base body and the mounting body, and a height adjustment for adjusting the height of the mounting body relative to the base body It can also be achieved by a rail fixing method including a step and an attachment body fixing step of engaging one end portion of the fixing body with an engaging portion provided in the base body and fixing the attachment body to the base body.

  The operation and effect of the above method is almost the same as that of the rail fixing device.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to respond | correspond flexibly to ground subsidence, a rise, etc., maintaining the robustness of the whole rail fixing apparatus.

Next, an embodiment of a rail fixing device according to the present invention will be described.
FIG. 1 is a perspective view showing a part of an automatic warehouse to which a rail fixing device is applied.

  The automatic warehouse shown in FIG. 1 is a warehouse in which articles are automatically loaded onto and loaded from a rack 2 by a stacker crane 1 as a tracked carriage, and the stacker crane 1 and the stacker crane 1 are connected to each other. And a station 3 on which goods are placed at the time of loading and unloading.

FIG. 2 is a side view schematically showing the automatic warehouse.
The stacker crane 1 includes a casing formed by connecting a lower carriage 11 and an upper carriage 12 with a mast 13, and a configuration in which a lifting platform 16 moves up and down along the mast 13 is adopted.

The rack 2 is a shelf for storing articles.
The lower carriage 11 is a part that becomes a drive source for moving the stacker crane 1 in the horizontal direction, and is used for traveling on the rail 4 as a track of the stacker crane 1 laid on the floor surface 200 as a reference plane. A wheel 14 and a travel motor 15 that drives the wheel 14 are provided.

  The mast 13 is a structure that serves as a foundation for the elevator 16 to move up and down. The mast 13 guides the winch motor 17 for raising and lowering the elevator 16, a wire rope 19 that suspends the elevator 16, and the wire rope 19. And a sheave 18.

  The elevator 16 is a device that moves up and down in a state where the article is placed, and carries the article into and out of an arbitrary position of the rack 2, and includes a slide fork 20 that conveys the article in the horizontal direction. .

  In the stacker crane 1, the length of the mast 13 reaches several tens of meters, and the article placed on the lifting platform 16 may be heavy. Therefore, the rail 4 on which the stacker crane 1 travels must be horizontal in the traveling direction, and the levels of the two rails 4 must match and be parallel. Moreover, since the rail fixing device for fixing the rail 4 to the floor surface 200 receives the load from the stacker crane 1, it needs to be robust.

FIG. 3 is an exploded perspective view showing the rail fixing device.
FIG. 4 is a side view showing a state in which the rail fixing device is attached to the floor surface.

  As shown in these drawings, the rail fixing device 100 is a device for fixing the rail 4 that is the track of the stacker crane 1 to the floor surface 200, and includes a base 110, a mounting body 120, and a fixing bolt as a fixing body. 130 and a spacer 140.

  The base 110 is a plate-like member that is fixed to the floor surface 200 as a reference surface by the anchor bolt 30. The anchor bolt hole 111 through which the anchor bolt 30 is inserted, and the fixing screw hole 112 as a locking portion, It has.

  The attachment body 120 is a plate-like member to which the rail 4 is attached, and includes an insertion hole 121 through which the fixing bolt 130 is inserted. Further, two cradles 122 are provided on the upper surface of the mounting body 120 so as to protrude upward. The cradle 122 is a U-shaped member, and has an opening into which the head of the mounting bolt 123 can be inserted on the side of the cradle 122. In addition, an overhanging portion that engages with the head of the inserted mounting bolt 123 and restricts the mounting bolt 123 from being pulled upward is provided. Further, the opposing surfaces of the two pedestals 122 function as a restriction wall that restricts the rail 4 from shifting in the X direction, which is the first direction.

  The fixing bolt 130 is locked to the base 110 by engaging the fixing screw hole 112 with the tip portion screwed, and the head of the fixing bolt 130 and the mounting body 120 are engaged to the base 110. This is a fixed body that can fix the mounting body 120.

  The spacer 140 is a plate-like member that is disposed between the base body 110 and the mounting body 120 and determines the distance between the base body 110 and the mounting body 120. The thickness of the spacers 140 and the number of the spacers 140 are arbitrarily selected depending on the distance to be adjusted.

Next, a method for fixing the rail 4 using the rail fixing device 100 will be described.
First, according to a conventional method, the anchor bolts 30 are driven into the floor surface 200 at intervals corresponding to the anchor bolt holes 111 provided in the base 110. Thereby, the anchor bolt 30 is fixed to the floor surface 200 in a state where the male screw portion protrudes from the floor surface 200. The anchor bolts 30 are driven at predetermined intervals along the laying direction (Y direction) of the rails 4.

  Next, the anchor bolt 30 protruding from the floor surface 200 is inserted into the anchor bolt hole 111, and the base body 110 is placed on the floor surface 200. A nut 31 is screwed into the anchor bolt 30 to fix the base 110 to the floor surface 200 (base fixing step). When the nut 31 is screwed in, if the washer 32 or the like is used, the loosening of the nut 31 over time can be suppressed. The washer 32 may be a spring washer or the like. Further, as a measure for preventing loosening, a lock nut, a split pin, or the like may be used together with the washer 32 or separately from the washer 32.

  As described above, when the anchor bolt 30 is employed when the base 110 is fixed to the floor surface 200, the nut 31 for fixing is exposed above the floor surface 200, so that it is possible to easily implement a measure for preventing loosening. It becomes.

  Next, the mounting body 120 is placed on the base 110, and the rail 4 is placed on the mounting body 120. Further, the rail 4 is temporarily fixed to the mounting body 120.

  In addition, it is preferable to arrange the rubber sheet 50 between the attachment body 120 and the rail 4. This is because the rubber sheet 50 exhibits an anti-vibration effect and vibrations when the stacker crane 1 travels on the rail 4 can be suppressed.

  Next, the rail 4 is arranged so that the attachment body 120 comes above the base body 110 (attachment body arrangement step).

  After all of the rail fixing devices 100 arranged in parallel in the laying direction of the rail 4 are set to the above state, the level of the laying direction of the rail 4 is adjusted. Specifically, the spacer 140 is inserted and adjusted between the base 110 and the attachment body 120 (height adjustment step). Therefore, the number of spacers 140 disposed between the base 110 and the attachment body 120 and the thickness of the spacers 140 vary depending on the situation of the floor surface 200.

  When the adjustment of the level of the rail 4 is finished, the fixing bolt 130 is inserted into the insertion hole 121 from the attachment body 120 side and screwed into the fixing screw hole 112 (attachment body fixing step). The fixing bolt 130 having a length that combines the thickness of the mounting body 120, the thickness of the entire spacer 140, and the screwing allowance to be screwed into the fixing screw hole 112 is selected.

  In this way, if the fixing bolts 130 having different lengths are prepared, it is possible to cope with the case where the thickness of the spacer 140 is changed as a result of the height adjustment and is greatly different between the rail fixing devices 100. Is possible.

As described above, the attachment body 120 is fixed to the floor surface 200 at a predetermined height.
Next, in order to make the two rails parallel, the horizontal spacer 124 is sandwiched and adjusted between the cradle 122 and the rail 4 (parallelism adjustment step). Specifically, the position of the rail 4 in the X direction with respect to the attachment body 120 is adjusted by the number of the lateral spacers 124 disposed between the cradle 122 and the rail 4 and the thickness of the lateral spacer 124.

  If the two rails 4 are parallel to each other, the mounting bolt 123 is attached to the pedestal 122, and the nut 126 is tightened so that the end edge of the rail 4 is sandwiched between the mounting body 120 and the tip of the clip 125. The rail 4 is fixed with respect to it.

  As described above, the rail 4 is fixed to the floor surface 200 in a horizontal and parallel state by the rail fixing device 100.

  In addition, when the rail fixing device 100 is used, when the rail 4 is sunk unevenly after the rail 4 is laid and the rail 4 is bent, the following can be performed.

  That is, the fixing bolt 130 of the rail fixing device 100 disposed in the portion where the ground is sinking is removed, and the spacer 140 is inserted between the attachment body 120 and the base 110 by the amount of sinking. In this case, when the spacer 140 to be inserted is thick, and the removed fixing bolt 130 is not engaged with the fixing screw hole 112, the fixing bolt having a long length corresponding to the thickness of the entire spacer 140 is obtained. The rail 4 can be fixed to the floor surface simply by fixing the attachment body 120 to the base 110 using 130.

  Therefore, unlike the conventional method, a time-consuming process such as once moving the rail 4 and newly planting a long anchor bolt is not required. Further, even if the settlement is severe, the space between the mounting body 120 and the base 110 is filled with the spacer 140, so that there is no brittleness that is lifted by only two bolts, and the rail 4 is firmly attached to the floor surface. 200 can be fixed.

Next, a modified example of the rail fixing device 100 will be described.
FIG. 5 is an exploded perspective view illustrating another aspect of the rail fixing device.

  In addition, the part which is common with the said rail fixing device 100 attaches | subjects the same code | symbol, and abbreviate | omits the description.

  The base 110 includes a first engaging portion 151 on the upper surface portion. The first engagement portion 151 extends in the Y direction, and includes a triangular protrusion and a triangular groove extending in parallel with the protrusion.

  The spacer 140 engages with the first engagement portion 151 and includes a second engagement portion 152 that restricts relative movement between the base 110 and the spacer 140 in the X direction intersecting the Y direction where the rail 4 is laid. It is provided on the lower surface of the spacer 140. The second engaging portion 152 includes a protrusion having a triangular section and a groove having a triangular section extending in parallel with the protrusion, extending in the Y direction. Furthermore, the spacer 140 includes a third engagement portion 153 on the upper surface portion. The third engaging portion 153 extends in the Y direction, and includes a triangular protrusion and a triangular groove extending in parallel with the protrusion.

  The attachment body 120 includes a fourth engagement portion 154 that engages with the third engagement portion 153 and restricts relative movement between the spacer 140 and the attachment body 120 in the X direction on the lower surface portion. The fourth engaging portion 154 extends in the Y direction, and includes a triangular protrusion and a triangular groove extending in parallel with the protrusion.

  The mounting body 120 is arranged so as to sandwich the rail 4, and two upwardly projecting pedestals 122 are attached to the upper surface portion, and the opposing surfaces of the pedestal 122 regulate the deviation of the rail 4 in the X direction. Functioning as a regulating wall 127.

  In the rail fixing device 100 having the above configuration, the first engagement portion 151, the second engagement portion 152, the third engagement portion 153, and the fourth engagement portion 154 are engaged with each other, so that the base 110 and The positional relationship in the X direction with the attachment body 120 does not shift. Further, since the cradle 122 is fixed to the mounting body 120, the lateral spacer 124 determines the positional relationship in the X direction between the restriction wall 127 of the cradle 122 and the side edge of the rail 4, so that the mounting body 120 and the rail 4 in the X direction is fixed.

  If the rail fixing device 100 having the above configuration is employed, the positional relationship in the X direction between the base 110 and the rail 4 can be fixed, and the spacer including the second engaging portion 152 and the third engaging portion 153 is provided. Even when a plurality of 140 are added or removed, the positional relationship in the X direction between the base 110 and the rail 4 can be maintained.

  Accordingly, after the rail 4 is laid on the floor surface 200, even when the height of the mounting body 120 is adjusted by subsidence or elevation of the ground, even when the fixing bolt 130 is removed and the spacer 140 is increased or decreased, the parallelism of the rail There is no need to adjust.

  Further, the structural strength of the rail fixing device 100 after the rail 4 is laid can be improved.

  In the above embodiment, the spacer 140 and the mounting body 120 have been described as separate bodies, but a plurality of mounting bodies 120 having different thicknesses as shown in FIGS. 6A and 6B are prepared. The attachment body 120 may have the function of the spacer 140 together.

  Moreover, although the fixing bolt 130 was illustrated as a fixed body, what combined the dimension cutting bolt and the nut may be used, for example.

  Moreover, although the case where the fixing screw hole 112 is directly provided in the base 110 as the engaging portion is illustrated, the following case may be used. That is, a hole into which the nut is fitted in the base 110 is provided. Although the hole is a hole with a bottom, a hole through which a bolt that engages with the nut can be inserted is provided at the bottom. Further, when a nut is attached to the hole, the nut does not rotate with respect to the base 110. As described above, the hole and the nut function as an engaging portion.

  In addition, the engaging portion is not only engaged by a screw, but, for example, a rod-shaped engaging portion is provided on the base 110, and one end of the fixture has a hook shape that engages with the rod-shaped engaging portion. May be.

  The present invention can be used when fixing a rail which is a track of a tracked carriage.

It is a perspective view which shows a part of automatic warehouse to which a rail fixing device is applied. It is a side view which shows an automatic warehouse typically. It is a perspective view which decomposes | disassembles and shows a rail fixing device. It is a side view which shows the state which attached the rail fixing device to the floor surface. It is a perspective view which decomposes | disassembles and shows another aspect of a rail fixing device. It is a side view which shows the attachment body also provided with the function as a spacer. It is a perspective view which decomposes | disassembles and shows the conventional rail fixing device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stacker crane 2 Rack 3 Station 4 Rail 30 Anchor bolt 50 Rubber sheet 100 Rail fixing device 110 Base body 111 Anchor bolt hole 112 Fixing screw hole 120 Attachment body 121 Insertion hole 122 Receptacle 124 Horizontal spacer 125 Clip 127 Restriction wall 130 Fixing bolt 140 Spacer 151 First engagement portion 152 Second engagement portion 153 Third engagement portion 154 Fourth engagement portion 200 Floor surface

Claims (4)

A rail fixing device for fixing a rail which is a track of a tracked carriage,
A base body having a locking part and fixed to the reference surface by anchor bolts implanted in the reference surface;
A mounting body on which the rail is detachably mounted;
One end portion is locked to the locking portion, and a fixed body that fixes the attachment body to the base body;
A rail fixing device including a spacer that is disposed between the base body and the mounting body and determines a distance between the base body and the mounting body. The locking portion provided on the base is a screw hole,
The mounting body has a plate shape with a mounting surface on which a rail is mounted;
The rail fixing device according to claim 1, wherein the fixing body is a bolt that can be screwed into the screw hole. The substrate is
A first engagement portion is provided on the upper surface portion of the base body,
The spacer is
A second engagement that engages with the first engagement portion on the lower surface portion of the spacer and restricts relative movement between the base and the spacer in a first direction that intersects the direction in which the rail is laid. With the joint,
A third engagement portion is provided on the upper surface portion of the spacer,
The mounting body is
A fourth engagement portion that engages with the third engagement portion on a lower surface portion of the attachment body and restricts relative movement between the spacer and the attachment body in the first direction;
2. The rail fixing device according to claim 1, wherein the rail fixing device is provided on the upper surface portion of the attachment body so as to sandwich the rail to be attached, and has two upwardly protruding regulating walls. A rail fixing method for fixing a rail which is a track of a tracked carriage,
A base fixing step for fixing the base body having a locking portion by an anchor bolt planted on a reference surface;
An attachment body arranging step for arranging an attachment body to which the rail is detachably attached above the base;
A height adjusting step of arranging a spacer between the base body and the mounting body and adjusting the height of the mounting body with respect to the base body;
A rail fixing method including: an attaching body fixing step of engaging one end portion of the fixing body with an engaging portion provided in the base body and fixing the mounting body to the base body.

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