JPH0664712A - Automatic warehousing equipment - Google Patents

Abstract

PURPOSE:To prevent the vertical movement while a taking-out/in device is traveling, and enable smooth traveling by preventing generation of colliding noises by abutting a guide roller of trapezoidal section on both sides of an overhead rail having inverse trapezoidal section. CONSTITUTION:The section of an overhead rail 7 is of inverse trapezoidal shape, and a trapezoidal surface 20 of a guide roller 19 is opposite to this trapezoidal surface 8 from the bottom side. When a taking-out/in device is moved in the vertical direction while traveling, the trapezoidal surface 8 of the overhead rail abuts on the trapezoidal surface 20 of the guide roller, preventing the vertical movement of the taking-out/in device. The trapezoidal surface 20 of the guide roller is pressed against the trapezoidal surface 8 of the overhead rail and energized by a compressive coil spring 27, and guiding is executed so that no clearance may ever be generated between the respective trapezoidal sections 20, 8 even when the mounting level of the overhead rail 7 is displaced. This constitution allows the traveling guide without rattling or generating noises, and the small vertical movement when the taking-out/in device is vertically moved while traveling is absorbed due to the compression against the energizing force of the compressive coil spring 27 and the repulsion of the energizing force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic warehouse facility installed in, for example, a factory and having a shelf and a loading and unloading device which is supported and guided by a floor rail on a fixed path in front of the shelf and can travel freely. Is.

[0002]

2. Description of the Related Art As an automatic warehouse facility comprising a shelf and a loading / unloading device, a structure disclosed in, for example, Japanese Patent Laid-Open No. 61-7103 is provided. That is, the load delivery device, which is a loading / unloading device, is supported by the floor rails via wheels and guided by the ceiling rails via rollers so that it can travel on a fixed path along the shelves. Here, the ceiling rail has a rectangular cross section, and a pair of left and right rollers are arranged so as to face both side surfaces thereof.

According to this conventional type, a combination of traveling movement along a predetermined path along the front surface of the shelf, vertical movement of the lifting platform, and lateral movement of the loading / unloading mechanism (fork) causes the rack to move to the shelf. The load can be transferred to and from the load transfer device. At that time, the traveling motion of the load transfer device is greatly shaken left and right because the lower part is supported and guided by the floor rail via wheels and the upper part is guided by both sides of the ceiling rail via a pair of rollers. Done without.

[0004]

According to the above-mentioned conventional structure, since both side surfaces of the ceiling rail are vertical surfaces and the rollers are flat rollers, the rollers can move vertically with respect to the ceiling rail. Therefore, when the vertical movement of the load transfer device is large, there is a possibility that the rollers may run up against the ceiling rail. Further, due to the gap formed between both side surfaces of the ceiling rail and the roller, the load transfer device slightly shakes left and right, and the collision sound at that time becomes noise.

The object of the present invention is to prevent a large vertical movement during traveling by means of the guide mechanism on the ceiling side. Further, the guide always has no gap and absorbs the vertical movement. The point is to provide automated warehouse equipment that can be used.

[0006]

In order to achieve the above object, the automatic warehouse equipment of the first aspect of the present invention has a trapezoidal section in the upper part of an automatic warehouse loading / unloading device supported and guided by floor rails via wheels. A pair of left and right guide rollers are provided, and a ceiling rail having an inverted trapezoidal cross section is disposed between the guide rollers along the upper side of a certain path along which the loading / unloading device travels.

Further, in the automatic warehouse equipment of the second aspect of the present invention, both guide rollers are provided on the upper part of the loading / unloading device via the upward movement urging device.

[0008]

According to the structure of the first invention described above, the trapezoidal surfaces of both guide rollers are opposed to the trapezoidal surface of the ceiling rail from below, so that when the loading / unloading device moves up and down during traveling, The trapezoidal surfaces of both guide rollers may come into contact with the trapezoidal surface from below to prevent further movement of the loading / unloading device.

According to the structure of the second aspect of the present invention, the trapezoidal surface of the guide roller, which is urged upward by the urging force of the upward urging member, can be pressed against the trapezoidal surface of the ceiling rail from below.
Therefore, even if the ceiling rail is displaced at the erection level, the guide can always be provided with no gap between the trapezoidal surfaces. As a result, travel guidance can be performed without rattling and without making noise. Further, a small vertical displacement when the loading / unloading device moves up and down during traveling can be absorbed by compression against the urging force of the upward urging member or repulsion by the urging force.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. The frame-shaped shelf 1 forms a plurality of storage units 2 in the vertical direction and the horizontal direction, and each storage unit 2 is configured to support a load 3 (directly or via a pallet) via arms. ing. The shelves 1 are arranged side by side with a passage 4, and in the passage 4, a loading / unloading device 10 which can travel on a fixed path 5 is arranged.

The loading / unloading device 10 includes a lower traveling body 11
And a pair of front and rear columns 12 standing upright from this traveling body 11,
The upper frame 13 that connects the upper ends of the columns 12 together constitutes a main body. Then, the lifting body 14 is placed between both columns 12.
And the moving device 15 is placed on the lifting body 14.
By the operation of, a storage device (fork) 16 which can freely move in and out of the storage portion 2 is arranged. The traveling body 11 is
A drive wheel 17 and a driven wheel 18 which are freely rollable on the floor rail 6 are arranged in front and rear, and the upper frame 13 has a guide roller 19 guided by the ceiling rail 7.

The ceiling rail 7 has an inverted trapezoidal cross section, and both side surfaces of the ceiling rail 7 are formed as slanting guide surfaces 8 toward the center toward the bottom. The guide rollers 19 arranged on both sides of the ceiling rail 7 are trapezoidal in cross section,
The outer peripheral surface is formed as a slanted outer peripheral surface 20 toward the center toward the top. The guide roller 19 is provided on the upper frame 13 side via the upward movement urging device.

That is, a bracket 21 in the left-right direction is continuously provided from the upper frame 13, and the guide roller 19 is fitted on a roller shaft 22 erected from the bracket 21 so as to be freely rotatable and vertically movable. The lower half of the roller shaft 22 is externally fitted to stand up the tubular body 23 from the bracket 21, and the bearing 24 is disposed in the tubular body 23.

Here, the bearing member 24 includes a roller receiver 25 which is fitted inside the cylindrical body 23 and is fitted outside the roller shaft 22, and the roller receiver 25.
A plurality of ball rollers 26 are arranged on the roller 25 and can abut on the lower surface of the guide roller 19. And the cylinder 23
A compression coil spring 27 that is internally fitted to and externally fitted to the roller shaft 22 is provided, and the compression coil spring 27 is an example of an upward movement biasing device, and is arranged between the bracket 21 and the roller receiver 25. It

Next, the operation of the above embodiment will be described. In the automatic warehouse facility configured as described above, by the combined operation of the traveling motion of the traveling machine body 11 on the fixed path 5, the elevating motion of the elevating body 14, and the lateral withdrawal motion of the loading / unloading tool 16. The loading / unloading device 10 can load / unload the load 3 into / from the intended storage section 2 of the shelf 1.

At this time, in the upper guide portion, the bearing 24 is urged upward by the urging force of the compression coil spring 27, and the guide roller 19 is urged upward via the ball roller 26 of the bearing 24. Therefore, the inclined outer peripheral surface 20 is pressed against the inclined guide surface 8 from below by the urging force. Therefore, both guide rollers 19 are constantly pressed against both sides of the ceiling rail 7 from below and are clamped, and even if the ceiling rail 7 is displaced at the installation level or the pillar 12 is expanded or contracted, the inclined guide surface 8 It is possible to provide a guide in which no gap is formed between the inclined outer peripheral surface 20 and the inclined outer peripheral surface 20. As a result, travel guidance can be performed without rattling and without making noise.

Further, when the loading / unloading device 10 moves up and down while traveling, a small vertical displacement of the loading / unloading device 10 can be absorbed by compression against the elastic force of the compression coil spring 27 or repulsion by the elastic force, and a large vertical movement. The displacement can prevent the inclined outer peripheral surface 20 from coming into contact with the inclined guide surface 8 from below and further upward movement of the loading / unloading device 10.

In the above embodiment, the bearing 24 is used as a roller receiver.
Although it is composed of 25 and a ball roller 26, this may be a thrust cylindrical roller bearing type or the like. Further, although the compression coil spring 27 is used as the upward biasing member, this may be a leaf spring type or the like.

Further, in the above embodiment, the guide roller 19 is urged upward by the upward urging member, but in the first aspect of the present invention, the guide roller 19 is fixed to the bracket 21 side and the inclined guide surface 8 is provided. It may be an embodiment in which the inclined outer peripheral surface 20 and the inclined outer peripheral surface 20 can be brought into contact with each other.

[0020]

According to the first aspect of the present invention having the above-mentioned structure, it is possible to prevent the loading / unloading device from moving up and down largely during traveling due to the abutment of the trapezoidal surfaces of both guide rollers against the trapezoidal surface of the ceiling rail from below. Therefore, safe traveling can be always performed even when the vertical movement of the load delivering device is large.

Further, according to the second aspect of the present invention, since there is no gap between the ceiling rail and both guide rollers, it is possible to travel without generating collision noise due to rattling, and the up / down movement of the take-in / take-out device can be performed. It is possible to smoothly travel while absorbing the.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an upper guide portion according to an embodiment of the present invention.

FIG. 2 is a side view of the loading / unloading device.

FIG. 3 is a front view of the automatic warehouse facility.

[Explanation of symbols]

 1 Shelf 5 Fixed path 6 Floor rail 7 Ceiling rail 8 Inclination guide surface 10 Injecting / retracting device 11 Traveling vehicle 12 Pillar 13 Upper frame 14 Elevating / lowering body 16 Ejecting / removing tool 17 Drive wheel 18 Driven wheel 19 Guide roller 20 Inclined outer peripheral surface 22 Roller shaft 24 Bearing Tool 27 Compression coil spring (upward biasing tool)

Claims (2)

[Claims] 1. A pair of left and right guide rollers having a trapezoidal cross section are provided on the upper and lower parts of an automatic warehouse loading / unloading device supported and guided by floor rails above a certain path along which the loading / unloading device travels. An automatic warehouse facility characterized in that a ceiling rail having an inverted trapezoidal cross section is arranged along both guide rollers. 2. The both guide rollers are provided on an upper part of the take-in / take-out device via an upward movement urging device.
Automatic warehouse equipment as described.