JP2000118628A - Rail unit of automatic warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail unit of an automatic warehouse easy to lay a travelling rail on it and easy to adjust height and levelness. SOLUTION: A rail unit 14 is furnished with a rail base 13 furnished with a height control means 15 and a travelling rail 10 fixed on it and on which a stacker crane is free to travel. The rail base 13 is formed in a ladder shape of a square shape frame part 13a and a reinforcing member 13b arranged on the inside of the frame part 13a in such a way as to be orthogonal with the longitudinal direction of the frame pary 13a. The travelling rail 10 is fixed on the rail base 13 by a bolt 10b. An angle 16 is fastened on an upper surface of the frame part 13a, and bolt insertion holes 16a to use at the time of connecting the rail units 14 to each other on both end parts are formed on the angle 16. Bolt insertion holes 16b to be used for connection with a rack unit are formed with specified intervals on an intermediate part of the angle 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail unit of an automatic warehouse.

[0002]

2. Description of the Related Art Generally, a stacker crane used in an automatic warehouse guides a traveling rail laid along a floor of a passage on a guide rail arranged along a ceiling surface in parallel with the traveling rail. Been moved. The stacker crane includes a traveling vehicle, a mast, a carriage, a fork device, and the like. The traveling vehicle is provided with a pair of traveling wheels that roll on traveling rails. Then, it stops at a predetermined load transfer position based on a command from the control device, and operates a fork device mounted on the carriage to transfer the load to and from the storage shelf. In order for the stacker crane to travel in a stable state and to smoothly transfer a load to and from a predetermined storage shelf, it is necessary to lay the traveling rail horizontally at a predetermined height.

Conventionally, traveling rails used in automatic warehouses are fixed on a number of sleepers arranged on the floor or the ground. Then, in order to install the traveling rail horizontally and at a predetermined height with respect to the rack unit of the automatic warehouse, a spacer (shim) is inserted between the traveling rail and the sleeper or between the floor and the sleeper. Was adjusted.

[0004]

However, since the running rail generally has a length of 3 m or more, when adjusting the height of the running rail, the height of the sleepers supporting the running rail is sequentially increased one by one. If it is changed, the running rail will be easily distorted.
In addition, there is a problem in that adjustment with a spacer (shim) takes time and effort to align with the rack unit.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a rail unit of an automatic warehouse in which installation of a traveling rail, height and level adjustment are easy.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a traveling rail on which a stacker crane can travel is fixed on a rail base, and the height of the rail base is fixed to the rail base. Adjustment means was provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the rail base is disposed inside the frame so as to be orthogonal to the longitudinal direction of the frame. It is formed in a ladder shape by the reinforcing member provided.

[0008] According to a third aspect of the present invention, in the first or second aspect of the invention, the rail base has a connecting portion with a rack unit constituting an automatic warehouse. According to the first aspect of the present invention, when the traveling rail is installed, the rail base unit is arranged at a predetermined position in the automatic warehouse. When the height adjusting means is operated in accordance with the unevenness of the floor surface or the like, the height of the traveling rail is changed integrally with the base plate. Therefore, unlike the case where the height of the supporting portion is changed while only a part of the traveling rail is supported, the traveling rail is less likely to be distorted.

According to the second aspect of the present invention, the first aspect is provided.
In the invention described in (1), since the rail base is formed in a ladder shape, the rail base is lighter in weight than a case where a base plate having the same strength and the same outer shape is formed of one plate material.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the rail base is fixed to a rack unit constituting an automatic warehouse in a state of being connected at a connecting portion. You. Therefore, the position of the rail base, that is, the position of the traveling rail with respect to the rack unit, is prevented from being changed in the event of an earthquake or the like.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 2, the automatic warehouse 1 includes an automatic warehouse building 2 which is formed in a substantially rectangular parallelepiped shape. The automatic warehouse building 2 includes a passage 3 linearly extending at a constant width in the center in the width direction, and a passage 3.
And cargo storage shelves 4 respectively provided on both sides of the vehicle. Each of the load storage shelves 4 includes a plurality of storage portions 5 partitioned by a pair of left and right support pieces 5a and formed in a shelf shape.

Each of the cargo storage shelves 4 has two types of rack units 6A,
6B are formed. Each rack unit 6
A and 6B are independently provided with filter devices 7 for introducing air on the passage side from an inlet provided on the lower side thereof, filtering the introduced air, and supplying the filtered air to the respective housing portions 5 from the back side. Have been. However, in FIG. 2, the rack unit 6A
Although only the filter device 7 is illustrated in FIG. 7, the same filter device 7 is provided in the rack unit 6B. Then, the automatic warehouse building 2 is provided with each rack unit 6.
The whole inside is maintained at a predetermined cleanliness by the filter device 7 provided in A, 6B.

The automatic warehouse building 2 is provided with a stacker crane 9 for transferring loads between each of the load storage shelves 4 and the transfer device 8 for loading and unloading. A traveling rail 10 for a stacker crane 9 is laid horizontally in the passage 3 with its upper surface located at a predetermined height from the floor surface. A guide rail 10a is provided on the ceiling above the passage 3 in parallel with the travel rail 10.

The stacker crane 9 includes a mast 11a erected on a carriage 11 and a carriage 12 mounted on the mast 11a so as to be able to move up and down. Rail 10
Drive along the path 3 above. Then, the stacker crane 9 conveys the load carried in from the outside of the automatic warehouse 1 via the transfer device 8 to the storage section 5 designated to be stored, or
The operation of transporting the load stored in the storage unit 5 designated to be delivered to the transfer device 8 is performed.

The traveling rail 10 is laid at a predetermined position by connecting a rail unit 14 to which the traveling rail 10 is fixed on a rail base 13. Note that FIG.
Here, the rail base is omitted, and the cross-sectional shape of the traveling rail 10 is also shown in a simplified manner. As shown in FIG. 1A, the rail unit 14 includes a rail base 13 having a height adjusting means 15 and a traveling rail 10 fixed thereon and on which a stacker crane 9 can travel. The rail base 13 is formed in a ladder shape by a rectangular frame portion 13a and a reinforcing member 13b disposed inside the frame portion 13a so as to be orthogonal to the longitudinal direction of the frame portion 13a. Frame part 13
a and the reinforcing member 13b are formed of a metal square pipe. The rail base 13 has a length of approximately 3 m and a width of approximately 1
m. The running rail 10 is fixed to a rail base 13 via bolts 10b. The running rail 10 is formed to be slightly longer (for example, about 1 to 2 mm) than the rail base 13, and is disposed so that both ends protrude from the end of the rail base 13.

An angle member 16 forming a connection portion with the rack units 6A and 6B is fixed to the upper surface of the frame portion 13a extending in the longitudinal direction of the rail base 13. A bolt insertion hole 16a used for connecting the rail units 14 to each other is formed at both ends of the angle member 16, and a bolt insertion hole 16b used for connection to the rack units 6A and 6B is formed at an intermediate portion. It is formed at intervals. Also, reinforcing plates 1 are provided at both ends of the angle member 16.
7 is fixed.

The height adjusting means 15 are arranged in two rows along the longitudinal direction of the rail unit 14. As shown in FIG. 4A, the height adjusting means 15 is a screw cylinder 18 fitted in a hole formed in the bottom surface of the frame portion 13a or the reinforcing member 13b.
And a screw shaft 19 screwed into a female screw portion 18a formed inside the screw cylinder 18. A flange 18b is formed at the lower end of the screw cylinder 18, and the frame portion 13a or the reinforcing member 13b is supported by the height adjusting means 15 while being supported by the flange 18b. A nut 20 is fixed to a lower portion of the screw shaft 19, and a portion protruding from the nut 20 is inserted into a hole 22 a of a seat 22 mounted on a floor surface 21. The screw shaft 19 inserted into the hole 22 a of the seat 22 is prevented from coming off by the retaining ring 23 in a state where the nut 20 is in contact with the upper surface of the seat 22. A lock nut 24 is screwed onto the screw shaft 19. Note that a similar height adjusting means 15 is also provided on the bottom of the rack units 6A and 6B.

A plurality of rail units 14 are connected and used according to the size of the automatic warehouse 1. Running rail 1
At the positions corresponding to both ends of 0, a mechanical stopper as a safety device when the brake of the stacker crane 9 breaks down, and a dog (detected portion) for setting a deceleration start position and a stop position near the end portion are provided. Provided. The rail units 14 used at both ends are commonly used in the automatic warehouses 1 having different sizes, and the rail units 14 having different lengths are used in the middle portion so that the entire length of the traveling rail 10 is adjusted. It has become.

Next, a procedure for installing the rail unit 14 and the rack units 6A and 6B when the rail unit 14 configured as described above is used will be described. First,
As shown in FIG. 5 (a), the rack units 6A and 6B are combined to install the load storage shelf 4 on one side. After operating the height adjusting means 15 to set the rack units 6A and 6B so that their bottom surfaces are horizontal and at a predetermined height, FIG.
As shown in (b), the rail unit 14 is installed.
The rail units 14 are installed one by one in order, and the height adjusting means 15 is operated so that the rail base 13 is horizontal and coincides with the height of the bottom surfaces of the rack units 6A and 6B.

When adjusting the height of the rail base 13 by operating the height adjusting means 15, first, the lock nut 24 is loosened to move the lock nut 24 to a position separated from the flange 18b. Next, the nut 20 is rotated, and the screw cylinder 1 is rotated.
The screwing amount of the screw shaft 19 into the female screw portion 18a of No. 8 is changed. The nut 20 moves in the direction in which the screwing amount of the screw shaft 19 increases.
Is rotated, the height of the rail base 13 decreases, and when the nut 20 is rotated in a direction in which the screw-in amount decreases, the height of the rail base 13 increases. After the height adjustment of the rail base 13 is completed, when the lock nut 24 is rotated to abut against the flange 18b, the rotation of the screw shaft 19 is restricted, and the height of the rail base 13 from the floor surface 21 is reduced. Fixed.

Next, a bolt insertion hole 16b and a hole 25a formed in the connecting portion 25 of the rack units 6A, 6B.
A bolt 26 is inserted into the rail unit 14 (shown in FIG. 4B) and tightened with a nut 27 to connect the rail unit 14 to the rack units 6A and 6B. As shown in FIG. 1B, the adjacent rail units 14 are connected to the connecting plate 28 and the bolts 26 inserted into the bolt insertion holes 16a.
And the nut 27.

Then, as shown in FIG. 5 (c), the other cargo storage shelf 4 is installed at last and its height is adjusted.
The rail unit 14 and the connecting portion 25 of the rack units 6A and 6B are connected by bolts 26 and nuts 27.

This embodiment has the following effects. (1) The traveling rail 10 on which the stacker crane 9 can travel is fixed on the rail base 13, and the rail base 13 is provided with height adjusting means 15 for the rail base 13. Therefore, the installation, height and horizontal adjustment of the traveling rail 10
It becomes simpler than the conventional running rail laying method.

(2) The rail base 13 is formed in a ladder shape by a rectangular frame portion 13a and a reinforcing member 13b disposed inside the frame portion 13a so as to be orthogonal to the longitudinal direction of the frame portion 13a. I have. Therefore, as compared with the case where a base plate having the same strength and the same outer shape is formed by one plate material, the weight is lighter, and the transportation and installation of the rail unit become easier.

(3) The rail base 13 is provided with an angle member 16 forming a connecting portion with the rack units 6A and 6B forming the automatic warehouse 1. Therefore, even if the rail base 13 is not fixed using an anchor bolt or the like,
It is possible to prevent the position of the rail base 13, that is, the position of the traveling rail 10 with respect to the rack units 6A and 6B from changing in the event of an earthquake or the like.

(4) Bolt insertion hole 1
Since the base 6b is formed, the rail base 13 can be easily connected to the rack units 6A and 6B via the bolts 26 and the nuts 27 inserted into the bolt insertion holes 16b.

(5) Since the end of the traveling rail 10 is formed so as to slightly protrude from the longitudinal end of the rail base 13, even if there is a manufacturing error in the rail base 13, the end of the adjacent traveling rail 10 is formed. The parts can be arranged close to each other, and the impact when the stacker crane 9 passes through the seam of the traveling rail 10 is suppressed.

(6) The connecting portion is formed by an angle member 16 extending over the entire length of the rail base 13 in the longitudinal direction. Therefore, as compared with the case where a large number of L-shaped brackets are provided at predetermined intervals, the labor for mounting the connecting portion is simpler and the strength is increased.

(7) As the height adjusting means 15 employs a structure in which the screw shaft 19 is rotated in the same manner as a so-called adjust bolt, the height can be easily adjusted by rotating the screw shaft 19.

(8) When laying the traveling rail 10 of a predetermined length by connecting a plurality of rail units 14, the rail units 14 arranged at both ends must have the same length, and the total length can be adjusted. Is performed by adjusting the length of the rail unit 14 disposed in the middle. Therefore, a mechanical stopper necessary for stopping the stacker crane 9 at the end of the traveling rail 10 and a mounting portion for an end dog (detected portion) can be provided at a predetermined position of the rail unit in advance. As a result, the mechanical stopper and the end dog can be easily mounted at predetermined positions regardless of the overall length of the traveling rail 10.

The embodiment is not limited to the above, and may be embodied as follows, for example. ○ The procedure for installing the rail unit 14 and the cargo storage shelf 4 is as follows. First, the rail unit 14 is arranged at a predetermined position,
The rack units 6A, 6B of one loading storage shelf 4 are arranged, and finally the rack units 6A, 6B of the other loading storage shelf 4 are arranged.
B may be arranged.

An angle member 16 extending over the entire length of the rail base 13 as a connecting portion for connecting the rail unit 14 and the rack units 6A and 6B.
May be provided only at a portion corresponding to the connecting portion of the rack units 6A and 6B. But,
Providing the angle member 16 extending over the entire length of the rail base 13 in the longitudinal direction simplifies the mounting work and increases the strength.

The connection between the rail unit 14 and the rack units 6A, 6B is not necessarily required. In place of connecting the rail unit 14 and the rack units 6A and 6B with the bolts 26 and the nuts 27, a clamp member may be used. In this case, it is not necessary to form the bolt insertion hole 16b.

Instead of adjusting the total length of the traveling rail 10 by changing the length of the rail unit 14 disposed at the intermediate portion, the length of the rail unit 14 disposed at the end is changed. May go.

In place of providing the angle members 16 which constitute the connecting portions between the rack units 6a and 6b and the adjacent rail unit 14, the height of the members provided in the longitudinal direction of the frame portion 13a is increased. A bolt insertion hole may be formed in the member. In this case, the angle material 1 is attached to the frame portion 13a.
The trouble of fixing the 6 is unnecessary.

The shape of the frame portion 13a of the rail base 13 is not limited to a quadrangle, but may be other shapes such as an ellipse and a flat hexagon. The rail base 13 may be formed of one plate instead of the frame 13a and the reinforcing member 13b. However, the combination of the frame portion 13a and the reinforcing member 13b is lighter in weight and easier to transport and install when the strength and the outer shape are the same.

In place of a unitized rack unit having a monocoque structure as the load storage shelf 4,
A rack having a configuration in which a plurality of columns and shelf members are connected by bolts may be used.

Instead of fixing the running rail 10 at the center of the rail base 13 in the width direction, the running rail 10 may be fixed at a position biased to one side. In this case, as compared with the case where the traveling rail 10 is fixed at the center, the worker can easily walk on the passage 3 during maintenance work or the like.

The stacker crane 9 is not limited to a type having one mast, but has a type in which two masts are used and a carriage moves up and down between them, and a type in which a plurality of (for example, two) fork devices are mounted on the carriage. May be applied to the stacker crane.

The inventions (technical ideas) other than those described in the claims which can be grasped from the embodiment will be described below together with their effects. (1) A plurality of rail units according to any one of claims 1 to 3 are connected to each other to lay a traveling rail having a predetermined length, and at least rail units disposed at both ends have the same length. The method of laying the traveling rail of the stacker crane, using the above, and adjusting the total length by adjusting the length of the rail unit arranged in the middle. In this case, a mechanical stopper and an end dog attaching portion required for stopping the stacker crane at the end of the traveling rail can be provided in advance at a predetermined position of the rail unit. The target stopper and the end dog can be easily attached at predetermined positions.

(2) In the invention described in claim 2,
The connecting portion is formed of a member extending over substantially the entire length of the rail base in the longitudinal direction. In this case, as compared with a case where a plurality of connecting portions are individually fixed to the rail base, the labor for mounting is simplified and the strength is increased.

[0042]

As described in detail above, claims 1 to 3 are described.
According to the invention described in (1), installation, height and level adjustment of the traveling rail of the automatic warehouse are simplified.

According to the second aspect of the present invention, the weight is reduced as compared with the case where a base plate having the same strength and the same outer shape is formed of one plate material, so that the rail unit can be easily transported and installed.

According to the third aspect of the invention, it is possible to prevent the position of the rail base, that is, the position of the traveling rail with respect to the rack unit, from being changed during an earthquake or the like.

[Brief description of the drawings]

FIG. 1A is a schematic perspective view of a rail unit according to an embodiment, and FIG. 1B is a partial plan view showing a connection state between the rail units.

FIG. 2 is a schematic perspective view of an automatic warehouse.

FIG. 3 is a partial schematic front view showing an arrangement of a rail unit and a rack unit.

4A is a sectional view of a height adjusting unit, and FIG. 4B is a partially enlarged view of FIG.

FIG. 5 is a schematic plan view showing an arrangement of a rail unit and a rack unit.

FIG. 6 is a schematic side view of the rail unit 14.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic warehouse, 4 ... Loading shelf, 6A, 6B ... Rack unit, 9 ... Stacker crane, 10 ... Running rail, 13
... Rail base, 13a ... Frame part, 13b ... Reinforcement member, 1
4 ... rail unit, 15 ... height adjusting means, 16 ... angle material constituting the connecting part.

Claims (3)

[Claims] 1. A rail unit of an automatic warehouse in which a traveling rail on which a stacker crane can travel is fixed on a rail base, and a height adjusting means of the rail base is provided on the rail base. 2. The vehicle according to claim 2, wherein the rail base has a rectangular frame portion,
2. A ladder shape formed by a reinforcing member disposed inside the frame so as to be orthogonal to the longitudinal direction of the frame.
Rail unit of automatic warehouse as described in. 3. The rail unit of an automatic warehouse according to claim 1, wherein the rail base has a connection portion with a rack unit constituting the automatic warehouse.