JPH06115623A - Taking in and out device for automatic warehouse - Google Patents

Abstract

PURPOSE:To enable to support an axle shaft with a pair of bearings, reduce the number of parts, decrease the cost, and form the whole device into small size and light weight, by assembling the final stage wheel body of a reduction gear integratedly with the axle shaft. CONSTITUTION:A running drive unit 30 fitted to a lower frame 11 is constituted of an axle shaft 34 supported on the lower frame 11 side through a pair of bearings 35, a driving wheel 17 fitted to the axle shaft 34, and a running drive device 43 with a speed reducer 38 fitted on the lower frame 11 side. One end of the axle shaft 34 is projected in the speed reducer 38, and the final stage wheel body 47 of a reduction gear 46 is fitted to one end of the projected axle shaft 34. Hereby, although respective two piece, total four piece of bearings are required in a customary constitution where the axle shaft and the hollow shaft of the running drive unit are separated, in this case, the axle shaft can be supported with a pair, total two bearings, and hence the number of parts is reduced.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art In an automatic warehouse consisting of shelves and a loading / unloading device, a structure shown in FIG. 7 is provided as a traveling drive unit of the loading / unloading device. That is, an end member 71 is integrated with a lower frame 70 of the loading / unloading device, and a wheel shaft 73 is supported by the end member 71 via a pair of left and right bearings (pillow type unit) 72. And on the wheel axle 73,
A drive wheel 75 with a brim that is supported and guided by a floor rail 74 is attached.

A traveling drive unit 77 is integrated with one side of the end member 71 via a connecting member 76. The traveling drive unit 77 includes a motor 78 and a speed reducer that works together with the motor 78.
79, the reduction gear case 80 is integrated with the connecting member 76, and the worm wheel 82, which is the final stage wheel body of the reduction gear 81, is arranged in the reduction gear case 80.

Here, the worm wheel 82 is externally fitted and fixed to a hollow shaft (hollow shaft) 83, and the hollow shaft 83 is further provided with a pair of bearings 84 provided in the speed reducer case 80.
It is rotatably supported by. Then, a small diameter shaft portion 73a extending from the wheel shaft 73 and penetrating the collar 85 is projected into the reduction gear case 80, and the small diameter shaft portion 73a is connected to the hollow shaft 83.
And is coupled to the hollow shaft 83 via a key 86.

According to the above-mentioned conventional structure, the forward / reverse rotational force of the motor 78 enters the speed reducer 79 and is decelerated by the speed reducer 81. Then, from the worm wheel 82, the hollow shaft 83 and the key 8 are pressed.
6. It is transmitted to the wheel shaft 73 through the small diameter shaft portion 73a to forcibly rotate the drive wheel 75. This allows the loading / unloading device to travel forward and backward at a predetermined speed.

[0006]

According to the above-mentioned conventional structure, since the wheel shaft 73 and the hollow shaft 83 of the traveling drive unit 77 are separate bodies, there are two bearings 62, and a total of four bearings 62,
The number of parts is increased, such as the need for 74, which increases the cost and increases the overall size and weight.

An object of the present invention is to provide an automatic warehouse loading / unloading device which can reduce the number of parts and can be reduced in size and weight.

[0008]

In order to achieve the above object, an automatic warehouse loading / unloading device of the present invention is a loading / unloading device which is supported and guided by a floor rail and is capable of traveling in front of a shelf, and which is mounted on a lower frame. The drive unit includes a wheel shaft supported on the lower frame side through a pair of bearings,
It has a drive wheel attached to this wheel shaft and a traveling drive device with a speed reducer attached to the lower frame side, and one end of the wheel shaft is plunged into the speed reducer and decelerated to one end of the plunged wheel shaft. The final stage wheel of the device is attached.

[0009]

According to the structure of the present invention, in the manufacturing factory,
Plural types of traveling drive units having driving wheels, traveling drive devices with reduction gears, and the like are prepared in advance. At this time, since the traveling drive unit integrally incorporates the final stage wheel body of the reduction gear transmission into the wheel shaft, the wheel shaft can be supported by a pair of (two in total) bearings.

Here, the running motion of the loading / unloading device is achieved by decelerating the forward / reverse rotational force of the running drive device by a speed reducer, and then forcibly rotating the drive wheels from the final stage wheel body through the wheel shafts, whereby the floor rail is driven. It is supported and guided by and can be performed in a reverse direction at a predetermined speed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 3 and 4, the frame-shaped shelf 1 forms a plurality of storage parts 2 in the vertical direction and the left-right direction, and each storage part 2 has a load 3 (directly or palletized) via arms. Via)). The shelves 1 are juxtaposed with an aisle 4, and the aisle 4
Inside, a loading / unloading device 10 is arranged so that it can travel on a fixed path 5 in front of the shelf 1.

The loading / unloading device 10 includes a lower frame 11
And a pair of front and rear posts erected from this lower frame 11.
12 and the upper frame that connects the upper ends of these posts 12
13 and 13 form a traveling body. And both posts
An elevating body 14 is arranged between the two 12, and an evacuation tool (fork) 16 is arranged on the elevating body 14 so as to be able to move in and out of the storage part 2 and the like by the operation of the retracting device 15. The lower frame 11 has drive wheels 17 and driven wheels 18 which are rollable on the floor rail 6 and which are distributed forward and backward, and the upper frame 13 is a guide roller guided by the ceiling rail 7.
Has 19.

As shown in FIGS. 1 and 2, the lower frame 11 is fitted between a pair of left and right channel members 20 and a fixing member 21 such as a rivet or a bolt which is fitted between the ends of the channel members 20. It is composed of a pair of front and rear end members 22, 23. Both end members 22 and 23 are made of cast metal, and an upward post mounting seat 24 is integrally formed.
The post 12 is erected on 24 and is integrated with a fixture 25 such as a rivet or a bolt. Further, the one end member 22 is integrally formed with an upward lifting drive unit mounting seat 26 and a rearward (forward) traveling drive unit mounting seat 27.

The traveling drive unit 30 detachably attached to the traveling drive unit mounting seat 27 has a box-shaped wheel case 31 whose lower surface is open. One of the front and rear plates of the wheel case 31 is formed on a wide mounting plate portion 31A. After the mounting plate portion 31A is applied to the traveling drive unit mounting seat 27 from the front and rear direction, a fixing tool 32 such as a bolt is used. Can be detachably attached.

Left and right side plates of the wheel case 31 are formed with left and right through holes 33, and a wheel shaft 34 passing through these through holes 33 has a pair of left and right bearings 35 arranged in the through holes 33.
It is rotatably supported on the wheel case 31 side via the. The drive wheel 17 is attached to the wheel shaft 34 in a state of being located in the wheel case 31, and the drive wheel 17 is supported and guided by the floor rail 6 in a flanged type.

An intermediate member 36 is provided on one side of the wheel case 31.
After it has been applied from the side, the fasteners such as bolts 37
Are integrated in. A through hole communicating with the through hole 33 is formed in the center of the intermediate member 36. The reducer case 39 of the reducer 38 is applied to the outside of the intermediate member 36 from the side, and then integrated with a fixture 40 such as a bolt. The speed reducer case 39 has a box shape, and a communication hole 41 that communicates with the through hole is formed on the side facing the intermediate member 36. One end of the wheel shaft 34 supported by the bearing 35 is cantilevered from the through hole through the communication hole 41 into the speed reducer case 39.

A receiving seat 42 is integrally formed on an upper part of the speed reducer case 39, and a traveling drive device (a motor with a flange type brake) 43 is placed downward on the receiving seat 42, and a bolt is installed. It is integrated with a fixture 44 such as. The output shaft 45 from the traveling drive device 43 projects downward into the speed reducer case 39, and the output shaft 45 and the wheel shaft 34 are positioned in the side case 39.
Is linked by. That is, the speed reducer 46 includes the wheel shaft 34.
It is composed of a worm wheel (final stage wheel body) 47 fixed to and a worm gear 48 fixed to the output shaft 45.
47 and 48 are always meshed. The traveling drive unit 30 is constituted by the above 31 to 48.

An elevating drive unit 50 interlocking with the elevating body 14 is attached to the elevating drive unit mounting seat 26. The lift drive unit 50 includes a motor 51 and a speed reducer 52, and the speed reducer 52 is connected to the lift drive unit mounting seat 26.
After being attached to the upper surface of the, it is detachably attached via a fixture 53 such as a bolt. The drive wheels 55 are fixed to the output shaft 54 from the speed reducer 52. The lifting drive unit 50 is configured by the above 51 to 55.

1 to 3, one end side of two free end ropes (chains or the like) 56 hung on the drive wheels 55 of the lifting drive unit 50 is arranged on the end members 22 and 23. The lower guide wheel 57 is connected to the lower part of the lifting body 14, and the other end side is connected to the upper part of the lifting body 14 via an upper guide wheel 58 arranged on the upper frame 13.

Next, the operation of the above embodiment will be described.
In the manufacturing plant, drive wheels 17, speed reducer 38 and traveling drive device 43
A plurality of types of traveling drive units 30 that are integrally formed of the above are prepared in advance. At that time, the traveling drive unit 30
Since the worm wheel 47 is integrally incorporated in the wheel shaft 34, the wheel shaft 34 can be supported by a pair (two in total) of the bearings 35.

When an order is placed, the traveling drive unit 30 is attached to the end member 22 of the lower frame 11 assembled according to the model to be handled, and further the elevation drive unit 50 is attached. The loading / unloading device 10 and the shelf 1 as described above are assembled at the installation site to form an automated warehouse. In the thus-configured automatic warehouse, the shelving operation is performed by a combination of the traveling movement of the loading / unloading device 10 on the fixed path 5, the raising / lowering movement of the elevating / lowering body 14, and the lateral movement of the loading / unloading tool 16. The load 3 can be loaded / unloaded in / from the intended storage section 2 of 1.

At this time, the running motion of the loading / unloading device 10 on the fixed path 5 causes the forward / reverse rotational force of the running drive device 43 to be reduced.
After being decelerated by the speed reducer 46 composed of the worm gear 48 and the worm wheel 47, the drive wheels 17 are forcibly rotated via the wheel shafts 34, and are supported and guided by the floor rails 6 at a predetermined speed. You can do it.

5 and 6 show a second embodiment of the present invention. That is, the drive wheels 17 are supported by the floor rail 6 in a collarless manner. Boss portions 31B protruding laterally are integrally formed from the left and right side plates of the wheel case 31, and guide wheels 61 guided to the side surfaces of the floor rail 6 are provided on the vertical pins 60 vertically extending from the boss portions 31B. Is rotatably provided. Further, the reduction gear 46 is a drive-side bevel gear 62 fixed to the output shaft 45, a passive-side bevel gear 64 fixed to the rotating shaft 63 supported by the reduction gear case 39 and meshing with the drive-side bevel gear 62, Rotating shaft 63
And a large diameter gear 66 fixed to the wheel shaft 34 and meshing with the small diameter gear 65.

The running motion of the loading / unloading device 10 on the fixed path 5 causes the forward / reverse rotational force of the running drive device 43 to be applied to the speed reducer 38.
After the speed is reduced by the speed reducer 46 consisting of the gears 62, 64, 65, 66, the drive wheels 17 are forcibly rotated via the wheel shafts 34, so that the forward and reverse operations can be performed at a predetermined speed. On the other hand, the drive wheels 17 and the driven wheels 18 are supported and the guide wheels 61 are guided.

[0025]

According to the present invention having the above-mentioned structure, the traveling drive unit can support the wheel shaft by the pair of bearings by integrally incorporating the final stage wheel body of the speed reducer into the wheel shaft, thus reducing the number of parts. The cost can be reduced and the cost can be reduced, and the overall size and weight can be reduced.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a traveling drive unit of a loading / unloading device according to a first embodiment of the present invention.

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

FIG. 3 is a side view of the loading / unloading device.

FIG. 4 is a front view of the automated warehouse.

FIG. 5 is a partially cutaway front view of the traveling drive unit of the loading / unloading device according to the second embodiment of the present invention.

FIG. 6 is a side view of a traveling drive unit of the loading / unloading device.

FIG. 7 is a partially cutaway front view of a traveling drive unit of the loading / unloading device, showing a conventional example.

[Explanation of symbols]

 1 shelf 6 floor rail 10 loading / unloading device 11 lower frame 14 lift 16 loading / unloading device 17 driving wheel 18 driven wheel 22 end member 23 end member 26 lifting drive unit mounting seat 27 traveling driving unit mounting seat 30 traveling driving unit 31 wheel case 34 wheels Axis 35 Bearing 38 Reduction gear 39 Reduction gear case 43 Travel drive 45 Output shaft 46 Reduction gear 47 Worm wheel (final stage wheel) 48 Worm gear 50 Lift drive unit 61 Guide wheel 66 Large diameter gear (final stage wheel)

Claims (1)

[Claims] 1. A loading / unloading device that is supported and guided by a floor rail and is capable of traveling in front of a shelf, wherein a traveling drive unit attached to a lower frame includes a wheel shaft supported on a lower frame side through a pair of bearings. A drive wheel attached to the wheel shaft and a traveling drive device with a speed reducer attached to the lower frame side, and one end of the wheel shaft is rushed into the speed reducer, and one end of the rushed wheel shaft is applied. A take-in / take-out device for an automated warehouse, which is equipped with the final stage wheel of the reduction gear.