JPH07228311A - Control device support structure for stacker crane - Google Patents

Abstract

PURPOSE:To prevent a control device support part from being deformed while it is transported even if a stacker crane is transported in an assembled condition as well as to prevent a nut used to fix an installing member to a mast from falling to a bottom part of the mast when the stacker crane is assembled. CONSTITUTION:In a mast 4, a dovetail groove 9 extending in the lengthwise direction is formed on the control device 8 arranged side. A lower part of the control device 8 is fixed on a support part 10 arranged in a lower part of the mast. An L-shaped bracket 16 is fixed to an upper part of the control device 8 by a bolt 18. The L-shaped bracket 16 is fixed to the mast 4 via bolts 20 and a nut plate 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device support structure for a stacker crane used in an automated warehouse or the like.

[0002]

BACKGROUND OF THE INVENTION Frame shelves 40 commonly used in automated warehouses.
As shown in FIG. 5, the plurality of columns 41 and the connecting member are assembled, and the accommodating portions 42 having a plurality of stages are formed on both sides of the passage.
Is provided. Each storage unit 42 has a pair of receiving shelves 43.
It is composed of. The loading and unloading of the load to and from each accommodation unit 42 is performed by a so-called stacker crane. It should be noted that the one side portion of the frame shelf 40 shows only the lowermost rack 43.

The stacker crane 1 reciprocates on a traveling rail 2 laid on the floor of the passage. The stacker crane 1 includes a lower frame 3 having traveling wheels (not shown), a pair of masts 4 provided on the lower frame 3, an upper frame 5 installed between upper parts of the masts 4, and a mast 4. An elevating carriage 6 is arranged so as to be vertically movable. A fork device 7 that transfers a load (not shown) between the elevating carriage 6 and the accommodating portion 42 is provided on the elevating carriage 6. And stacker crane 1
A control device 8 is arranged at a position corresponding to the lower part of the mast 4. The control device 8 drives and controls a traveling motor, a drive motor for the elevating carriage 6, a drive device for the fork device 7 (all not shown), and the like.

Since the stacker crane 1 is large and long, the stacker crane 1 is divided into a lower frame 3, a mast 4, an upper frame 5 and an elevating carriage 6 equipped with a control device 8, which are shipped to the site and assembled at the site. . Since the space for assembling at the site is generally small, when the elevating carriage 6 is arranged on the lower frame 3, the transport carriage supporting the elevating carriage 6 is run from the control device 8 side. In this case, in order to move over the control device 8 and move the elevating carriage 6, there is a problem that a large-sized carriage with leg height is required and the carriage cannot be performed stably.

In order to prevent the control device from interfering with assembling at the site as much as possible, Japanese Patent Laid-Open No. 2-163294 discloses that the control device is mounted upright around the horizontal axis with respect to the lower frame so that it can be tilted sideways. , A fixing device for fixing the standing control device to the lower frame side is disclosed. In this case, by assembling the stacker crane in a state in which the control device is disposed in the sideways position, the control device does not interfere much. However, the workability of assembling the stacker crane on site is still poor, and there is a problem that it is not possible to smoothly deal with a problem that occurs when confirming the operation of the elevating carriage and the like after the assembly is completed. Therefore, except for large masts having a height of more than about 15 m, stacker cranes are assembled in factories and transported to the site by transportation means such as trucks.

Further, the mast 4 is provided with a plurality of shaking preventing bars (neither of which is shown) for preventing shaking of a power source and a signal cable for connecting the control device 8 and the driving device for the fork device 7. Installed. The bar is mounted by means of bolts which are provided along the longitudinal direction of the mast 4 and which are screwed into nuts housed in dovetail grooves.

[0007]

When transporting the assembled stacker crane 1, the stacker crane is transported while being laid sideways on the bed of a truck. Therefore, when the stacker crane 1 is transported, the control device 8 is also laid down and transported. Conventionally, the control device 8 is supported only on the lower side thereof. For example, a support plate is horizontally provided on the lower frame 3 or above the support portion fixed to the lower portion of the mast 4, the control device 8 is mounted on the upper surface of the support plate, and the lower portion is fixed to the support plate by bolts. It was As a result, since the control device is transported in a cantilevered state, a large stress may be applied to the support plate due to vibration during transportation and the support plate may be deformed.

Further, in the structure in which the bar for preventing the cable sway is attached to the mast by using the nut accommodated in the dovetail groove formed along the longitudinal direction of the mast 4, the work such as changing the attaching position is performed. The nut may accidentally come off the bolt. The nut then falls along the dovetail groove to the bottom of the mast. Since the control device is fixed to the lower part of the mast, it is difficult to take out the fallen nut. Therefore, conventionally, it is necessary to insert a new nut from the upper end of the mast 4 into the groove and fix the bar for preventing shaking by using the nut, which is troublesome.

The present invention has been made in view of the above problems, and it is an object of the present invention to prevent the support portion of the control device from being deformed during transportation even when the stacker crane is transported in an assembled state. Another object of the present invention is to provide a control device support structure for a stacker crane that can prevent a nut used for fixing the mounting member to the mast from dropping to the bottom of the mast.

[0010]

In order to achieve the above object, according to the present invention, a control device is arranged at a position corresponding to a lower portion of a mast which is erected on a lower frame and which is opposite to a guide side of a lifting carriage. In the stacker crane, the mast has a dovetail groove that extends along the longitudinal direction on the installation side of the control device, and the lower part of the control device is fixed on the support part that is installed under the mast and the upper part of the control device. A fixing member was attached to the mast, and the fixing member was fixed to the mast via a bolt fixed in a state where a part of the fixing member entered the dovetail groove.

It is preferable that the bolt is screwed with a nut housed in the dovetail groove to fix the fixing member to the mast.

[0012]

The control device is supported with its lower and upper parts fixed. Therefore, when the control device is loaded on a transportation means such as a truck in a sideways state, the control device is supported at both ends thereof. Therefore, the force applied to the support portion and the fixing member due to the vibration during transportation is dispersed. Further, there is a nut used for fixing the mounting member mounted on the mast above the control device, and when the nut falls in the groove, the fixing bolt or nut of the fixing member engages with the falling nut.
The nut is prevented from falling in the dovetail groove to the bottom of the mast.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional device are designated by the same reference numerals and detailed description thereof will be omitted.

The mast 4 is formed by extrusion molding of aluminum, and as shown in FIG. 3 (a), a cylindrical portion 4a having a symmetrical cross section and a bracket 4b protruding from the cylindrical portion 4a.
It has and. A dovetail groove 9 is formed in the bracket 4b so as to extend along the longitudinal direction of the mast 4 (direction perpendicular to the paper surface of FIG. 3A).

FIG. 1 is a partial side view showing a state in which a part of the control device 8 is broken and a part of the cover of the support part is broken. As shown in FIGS. 1 and 2, the support portion 10 that supports the lower portion of the control device 8 includes a support bracket 11 that is fixed to a bracket (not shown) for fixing the lower end of the mast 4 to the lower frame 3. A support plate 12 welded to its upper end and a cover 10a are provided. A support piece 12 a is formed by bending downward around the support plate 12. Support plate 12 and each support piece 12
A hole is formed at a predetermined position in a, and nuts 13a and 13b are fixed to the inner surface corresponding to the hole by welding. The control device 8 is fixed to the support plate 12 at its lower portion by a bolt 14a and a washer 15 which are screwed into the nut 13a. A cover 10a that covers the periphery of the support portion 10 is fixed to the support piece 12a by a screw 14b that is screwed into a nut 13b. These supporting structures are basically the same as conventional ones.

The upper portion of the control device 8 is fixed to the mast 4 via an L-shaped bracket 16 as a fixing member. Two holes are formed in the upper wall 8a of the control device 8 near the mast 4, and a nut 17 is fixed to the inner surface of the upper wall 8a by welding at a position corresponding to the holes. L-shaped bracket 16
Has a hole formed at a position corresponding to the nut 17, and the control device 8 is provided with two bolts 18 screwed to the nut 17.
It is fixed to the upper wall 8a. Also, as shown in FIG.
In the L-shaped bracket 16, two holes are formed vertically at positions corresponding to both dovetail grooves 9 of the mast 4. In both dovetail grooves 9, a nut plate 19 as a nut having two screw holes corresponding to the above holes is slidably accommodated. The L-shaped bracket 16 is fastened and fixed to the mast 4 by four bolts 20 penetrating the hole and screwed to the nut plate 19.

As shown in FIG. 4, on the mast 4 on the side facing the control device 8, swing preventing bars 21 are fixed above the control device 8 at predetermined intervals. The bar 21 serves to prevent the cable (not shown) that connects the control device 8, the elevating carriage 6, the fork device 7 and the like from shaking. Similarly to the L-shaped bracket 16, the bar 21 also has a nut (not shown) slidably housed in the dovetail groove 9 of the mast 4.
And is fastened and fixed to the mast 4 by bolts 22 penetrating the bar 21.

The stacker crane 1 is transported to the user's site of use by transportation means such as a truck in a completely assembled state at the manufacturing factory. At the time of transportation, the stacker crane 1 is laid sideways and loaded on the bed of the truck, and the control device 8 is also laid sideways. The control device 8 has a lower portion fixed to the support plate 12 and an upper portion fixed to the mast 4 via an L-shaped bracket 16. Therefore,
Unlike the prior art, the control device 8 is in a state of being supported at both ends in the longitudinal direction, and the load of the control device 8 is the L-shaped bracket 1.
6 and the support plate 12 substantially evenly.
The stress acting on the L-shaped bracket 16 or the support plate 12 due to vibrations during transportation is about half that of the conventional device supported in a cantilever state. As a result, the support plate 12 is not deformed due to vibration during transportation.

When assembling the stacker crane 1,
The bar 21 is attached to the mast 4 after the control device 8 is fixed in place. Since the bar 21 is fixed by the bolt 22 via the nut accommodated in the dovetail groove 9, the nut may accidentally come off the bolt 22 and drop during the attachment work of the bar 21. If there is no engaging part in the middle of the nut removed from the bolt, it falls to the bottom of the mast 4, which is the back side of the control device 8. Since it is very troublesome to take out this nut, conventionally, a new nut was inserted from the upper end of the mast 4 into the groove 9 and used for assembly. However, even in this case, the work was troublesome. Especially multiple bars 2
When the nuts drop when the bolts 22 are loosened to adjust the position of the bar 21 mounted at the bottom after the mounting of No. 1, all the bar 21 mounted above it are dropped.
Since it was necessary to re-install on one side of the, it was more troublesome.

However, when the L-shaped bracket 16 is fixed to the mast 4 via the nut plate 19 and the bolt 20, the nut accidentally dropped when the bar 21 is attached or the position is adjusted is engaged with the nut plate 19. The fall is blocked at the position where Therefore, the worker can continue the work of attaching the bar 21 relatively easily by moving the nut to the predetermined position again.

Further, in this embodiment, the bolt 20 is provided and the groove 9
Since the L-shaped bracket 16 is fixed to the mast 4 by screwing with the nut plate 19 accommodated therein, it is not necessary to form a screw hole for screwing the bolt 20 in the mast 4. Further, even when the sizes of the L-shaped bracket 16 and the control device 8 are changed, the fixing position of the L-shaped bracket 16 can be easily changed by moving the nut plate 19 in the dovetail groove 9. It can also be used as a nut for mounting the bar 21.

The present invention is not limited to the above embodiment, but may be embodied as follows, for example. (1) A screw hole is formed in the bracket 4b at a position corresponding to the vicinity of the upper portion of the control device 8, and the bolt 20 is provided with a groove 9
Through and screw into the screw hole. In this case, the bolt 20
Is longer than that of the above embodiment. Then, the nut used for fixing the bar 21 is engaged with the bolt 20 and is prevented from falling. Also, in correspondence with the screw hole, L
If the holes formed in the mold bracket 16 are elongated holes, the L bracket 16 can be reliably fixed even if the positions of the holes formed in the L bracket 16 are slightly displaced from the positions of the screw holes.

(2) The head of the bolt 20 may be housed in the dovetail groove 9, and the L-shaped bracket 16 may be fixed to the mast 4 by screwing a nut into the male screw portion protruding from the hole of the L-shaped bracket 16. Further, the fixing member is not limited to the L-shaped bracket 16 but may be a fixing member having another shape such as a groove-shaped member or a square tubular body. Further, the fixing member may be fixed to the upper portion of the control device 8 by welding or the like, and may be detachably fixed to the mast only by using bolts.

(3) The lower part of the controller 8 is attached to the support plate 1
2 instead of being bolted to the support plate 12
The bolt may be fixed by welding to the upper surface of the so that the threaded portion projects, and the nut may be screwed and fixed to the threaded portion. Alternatively, the support plate 12 may be formed with an accommodating recess into which the lower part of the control device 8 is fitted, and the lower part of the control device 8 may be supported by fitting the lower part of the control device 8 into the accommodating recess.

(4) Mast 4 as stacker crane 1
The present invention may be applied not only to the double-post type stacker crane having a pair of but also to the single-post type stacker crane.
The technical ideas other than the invention described in the claims that can be understood from the embodiments and the modified examples will be described below together with the effects thereof.

(1) In the invention according to claim 1 or 2, the accommodation recess is provided at the upper end of the support, and the lower portion of the control device is supported in a state fitted in the accommodation recess. In this case, the work is easier than when the lower part of the control device is fixed with bolts.

[0027]

As described above in detail, according to the present invention, even if the stacker crane is transported in the assembled state, the support portion of the control device can be prevented from being deformed during the transportation. Further, the nut used for fixing the mounting member to the mast can be prevented from dropping to the bottom of the mast. Further, according to the second aspect of the invention, since the nut that is housed in the groove having the mast is used to fix the fixing member to the mast, the fixing position can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view in which a part of a cover according to an embodiment of the present invention is removed.

FIG. 2 is a partial front view of the same with a part of the cover removed.

3A is a partial plan view showing a relationship between a mast and an L-shaped bracket, and FIG. 3B is a sectional view showing a fixed state of the L-shaped bracket.

FIG. 4 is a schematic front view of a stacker crane.

FIG. 5 is a schematic perspective view showing a frame shelf and a stacker crane.

[Explanation of symbols]

1 ... Stacker crane, 3 ... Lower frame, 4 ... Mast, 6 ... Lifting carriage, 8 ... Control device, 9 ... Dovetail groove,
10 ... Support part, 12 ... Support plate, 14a, 18, 2
0 ... Bolt, 16 ... L-shaped bracket as a fixing member,
19 ... Nut plate as nut, 21 ... Bar.

Claims (2)

[Claims] 1. A stacker crane in which a control device is arranged at a position corresponding to a lower part of a mast which is provided upright on a lower frame and which is opposite to a lower guide side of an elevating carriage. A dovetail groove extending along the longitudinal direction is formed, and the lower part of the control device is fixed on a support part arranged in the lower part of the mast, and a fixing member is attached to the upper part of the control device. The control device support structure for the stacker crane that is fixed to the mast via the bolts that are fixed when the parts have entered. 2. The bolt is screwed to a nut housed in a dovetail groove to fix the fixing member to the mast.
The control device support structure for the stacker crane described in.