JPH06115624A - Wheel body supporting construction and taking in and out device for automatic warehouse - Google Patents

Abstract

PURPOSE:To assemble a wheel body into a supporting member easily and surely without using a collar by forming a large diameter part on a shaft and a small diameter cylindrical part on a wheel body. CONSTITUTION:When a driving wheel 17 is assembled into an end member 22 through an axle shaft 33, at first the axle shaft 33 is inserted into the end member 22 through a bearing setting hole formed on one side of it from the outside in the condition in which a bearing 30B is fitted in a bearing setting hole formed on the other side of the end member 22. At this time, a driving wheel 17 is arranged in the end member 22 so as to oppose the small diameter cylindrical part 17a to the bearing 30B, the axle shaft 33 is inserted through the through hole 17b of the driving wheel 17 and fitted into the bearing 30B. The inserting is performed until the small diameter cylindrical part 17a abuts to the bearing 30B and the large diameter part 33a abuts to the wheel body 17. Thereafter, one side bearing 30A is fitted in the one side bearing setting hole while being fitted around the axle shaft 33. Further, after fitting a placing member 31, a running drive device 26 is fitted to the projected axle shaft 33, interlockingly with a speed reducer 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wheel support structure such as wheels and guide wheels, and an automatic warehouse loading / unloading device which is supported and guided by a floor rail via wheels and can travel on a fixed path in front of a shelf. Is.

[0002]

2. Description of the Related Art As an automatic warehouse consisting of shelves and loading / unloading devices, a structure disclosed in, for example, JP-A-62-290609 is provided. That is, a warehouse crane, which is a loading / unloading device, has a lower frame having drive wheels and driven wheels that are rollable on a lower guide rail, a pair of front and rear columns that are erected from the lower frame, and a space between the upper ends of these columns. It is composed of an upper frame to be connected, an elevating carriage which is guided by both columns and carries a load transfer means, a carriage elevating means for elevating and lowering the elevating carriage, a traveling motor for driving the drive wheels, and the like. .

To support the drive wheels, for example, FIG.
As shown by, a wheel shaft 52 is rotatably provided on the lower frame 50 via a pair of left and right bearings 51, and the wheel shaft 52 is interlocked with a traveling motor 53 connected to the lower frame 50. The drive wheel 55 supported and guided by the lower guide rail 54 is fitted onto and fixed to the wheel shaft 52.
Between the two side surfaces of the wheel bearing 52 and the two bearings 51.
A collar 56 that is fitted to the outside is provided.

[0004]

According to the above-mentioned conventional type, when assembling the drive wheels 55 to the lower frame 50 via the wheel shafts 52, the collars 56 must be arranged on both sides of the drive wheels 55 by external fitting. As a result, it was extremely difficult to assemble and required skill.

An object of the present invention is to provide a wheel support structure for assembling a wheel without using a collar, and an automatic warehouse loading / unloading device adopting the wheel support structure.

[0006]

In order to achieve the above object, the wheel support structure of the first aspect of the present invention uses a pair of left and right bearings on the support member to attach the wheel to the support member via a shaft. A shaft is rotatably provided, and this shaft has a large diameter portion that can abut on one of the bearings from the inside, and abuts on the other bearing that is fitted and fixed to the shaft from the inside on the other bearing. It forms a small-diameter small tube.

The automatic warehouse loading / unloading device according to the second aspect of the present invention is such that a wheel shaft is supported by a pair of left and right bearings on the lower frame side of the loading / unloading device that is supported and guided by a floor rail and can travel on a fixed path in front of a shelf. Is rotatably provided, and this wheel shaft has a large diameter portion that can abut on one of the bearings from the inside.
The wheel, which is fitted and fixed to the wheel shaft and is supported and guided by the floor rail, is formed with a small-diameter tubular portion that can abut the other bearing from the inside.

[0008]

According to the structure of the first aspect of the present invention described above, when assembling the wheel body through the shaft on the support member, the bearing is first fitted in the bearing setting hole formed on the other side of the support member.
In this state, the shaft is inserted from the outside through one of the bearing setting holes. When this insertion is performed, a ring body is arranged in the support member with the small diameter cylindrical portion facing the other bearing, and therefore the shaft is fitted into the other bearing after the ring body is inserted. It

[0009] Such insertion is performed until the small-diameter cylindrical portion abuts on the other bearing and the large-diameter portion abuts on one side surface of the ring body. The body is fixed. After that, one of the bearings is externally fitted to the shaft and internally fitted (set) in the one bearing setting hole.
As described above, various wheel bodies can be supported by the support member.

According to the configuration of the second invention described above,
It is possible to obtain an automatic warehouse loading / unloading device in which wheels for traveling are arranged on the lower frame via bearings and wheel shafts.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. A frame-shaped shelf 1 as shown in FIGS. 4 and 5.
Forms a plurality of storage sections 2 in the vertical direction and the horizontal direction, and each storage section 2 is configured to support a load 3 (directly or via a pallet) via arms. The shelves 1 are arranged side by side with a passage 4, and in the passage 4, a loading / unloading device 10 is arranged which can travel on a fixed path 5 in front of the shelves 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 to 3, the lower frame 11 is fitted between a pair of left and right channel members 20, and is fitted between the end portions of the channel members 20 and integrated with a fixing member 21 such as a rivet or a bolt. 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 the post 12 is erected on the upper part thereof and integrated with a fixture 24 such as a rivet or a bolt.

A lateral traveling drive device mounting seat 25 is integrally formed on one end member 22, and a traveling drive device 26 is fixed to the traveling drive device mounting seat 25 by a fixture 27 such as a rivet or a bolt. It is integrated. The traveling drive device 26 includes a motor 28 and a speed reducer 29, and an output shaft from the speed reducer 29 is interlocked with the drive wheels 17.

That is, the end member which is an example of the supporting member.
Reference numeral 22 denotes a gate-shaped cross section, and bearings 30A and 30B are respectively fitted into the holes for bearing set formed in the both side plate portions by fitting from the outside, and after applying the abutting member 31 from the outside. By fixing with the fixture 32,
It is locked out. A wheel shaft 33, which is an example of a shaft, is rotatably supported by being inserted between both bearings 30A and 30B, and has an intermediate portion with respect to one bearing 30A on the traveling drive device 26 side. Large diameter part 33a that can abut from inside
Are integrally formed. The wheel shaft 33 is the speed reducer.
Interlocked with the 29 output shafts.

The drive wheel 17, which is an example of a wheel, is integrally (fixed) to a wheel shaft 33 fitted from the other side through a central through hole 17b, and the through hole is provided on the other side. 17b
A small-diameter cylindrical portion 17a that can abut the other bearing 30B from the inside is integrally and projectingly formed from the peripheral portion of the bearing 30B.

The driven wheel 18 is also an example of a wheel body, and the end member 23, which is an example of a supporting member, has a wheel shaft, which is an example of a shaft.
It is rotatably supported by the same structure as the drive side via 34 and bearings.

A mounting seat 35 is detachably attached to the lower frame 11, and the lifting body is mounted on the mounting seat 35.
A lifting drive device 36 interlocking with 14 is attached. The lifting drive device 36 includes a motor 37 and a speed reducer 38, and drive wheels 40 are fixed to an output shaft 39 from the speed reducer 38.

3 and 4, the lifting drive device 36
One end side of two free end ropes (chains etc.) 41 hung on the driving wheel 40 of the above is connected to the lower part of the elevating body 14 via the lower guide wheels 42 arranged on the end members 22 and 23. The other end is connected to the upper part of the lifting body 14 via an upper guide wheel 43 arranged on the upper frame 13. Here both guide wheels 4
Reference numerals 2 and 43 are examples of a wheel body, and are rotatably supported by a similar structure via a shaft and a bearing.

Next, the operation of the above embodiment will be described.
For example, when assembling the drive wheel 17 to the end member 22 via the wheel shaft 33, first, with the bearing 30B internally fitted (set) in the bearing setting hole formed in the other end member 22, the bearing set formed in one end Wheel shaft 33 from one side through hole
Insert. When this insertion is performed, the drive wheel 17 is arranged in the end member 22 with its small diameter cylindrical portion 17a facing the other bearing 30B. Therefore, the wheel shaft 33 is the drive wheel.
After being inserted through the through hole 17b of 17, the bearing is fitted in the other bearing 30B.

In this insertion, the small diameter cylindrical portion 17a is used for the other bearing.
30B and the large diameter portion 33a abuts on one side surface of the drive wheel 17. Then, the drive wheel 17 is fixed to the wheel shaft 33 by key insertion or the like by insertion. After that, one bearing 30A is fitted (set) into one bearing setting hole while being fitted onto the wheel shaft 33 from one side. The padding member 31 is appropriately attached. Then, the traveling drive device 26 is attached by interlocking the speed reducer 29 with the protruding wheel shaft 33.

In this way, the drive wheels 17, the driven wheels 18,
The access device 10 with the guide wheels 42 and 43 and the shelf 1 are
It is 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.

In the above embodiment, the loading / unloading device as a ring
Although the driving wheel 17, the driven wheel 18, and the guide wheels 42 and 43 of 10 are shown, in the embodiment of the first invention, the loading / unloading device 10 is used.
It can be easily adopted for supporting other wheels of the vehicle, supporting other devices such as a lower wheel of a moving shelf, and the like.

[0024]

According to the first aspect of the present invention having the above-described structure, the simple structure in which the large diameter portion is formed on the shaft and the small diameter cylindrical portion is formed on the ring body, the ring is used as the support member without using the collar. The body can be assembled, and even an unskilled person can easily and surely assemble the body.

Further, according to the second aspect of the present invention having the above-mentioned structure, there is provided an automatic warehouse loading / unloading device in which traveling wheels are arranged on the lower frame via bearings and wheel shafts and which has a simple structure and is easy to assemble. Obtainable.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of a drive wheel support structure portion of a loading / unloading device according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of a lower frame of the loading / unloading device.

FIG. 3 is a side view of a main part of a lower frame of the loading / unloading device.

FIG. 4 is a side view of the loading / unloading device.

FIG. 5 is a front view of the automated warehouse.

FIG. 6 is a vertical cross-sectional front view of a drive wheel support structure portion of a loading / unloading device showing a conventional example.

[Explanation of symbols]

 1 shelf 5 fixed path 6 floor rail 10 loading / unloading device 11 lower frame 12 post 13 upper frame 14 lifting body 16 loading / unloading device 17 drive wheel (wheel) 17a small cylindrical portion 17b through hole 18 driven wheel (wheel) 22 end member (Supporting member) 23 End member (supporting member) 26 Traveling drive device 30A Bearing 30B Bearing 33 Wheel shaft (shaft) 33a Large diameter part 34 Wheel shaft (shaft) 42 Lower guide wheel (wheel) 43 Upper guide wheel (wheel) )

Claims (2)

[Claims] 1. A wheel support structure for mounting a wheel on a support member via a shaft, wherein the support member is rotatably provided with a shaft via a pair of left and right bearings. A ring having a large diameter portion that can come into contact with from the inside, and a small diameter tubular portion that can come into contact with the inside of the other bearing from the inside is formed in the ring body that is fitted onto and fixed to the shaft. Body support structure. 2. A loading / unloading device which is supported and guided by a floor rail and can travel on a fixed path in front of a shelf, wherein a wheel shaft is rotatably provided on a lower frame side through a pair of left and right bearings. The shaft has a large-diameter portion that can come into contact with one of the bearings from the inside, and can come into contact with the other bearing from the inside with a wheel that is externally fitted and fixed to the wheel shaft and is supported and guided by the floor rail. An automatic warehouse loading / unloading device characterized by forming a small-diameter cylindrical portion.