JPH06255718A - Carry in/out device with cab - Google Patents

Abstract

PURPOSE:To reduce shock at the time of starting and stopping by mounting a carriage which can be lifted up and down along one side surface of a column which is vertically erected at a traveling body, mounting a cab on the other surface side of the column, and providing a lifting device which is engaged with a body to be engaged formed on the cab side of the column. CONSTITUTION:A carry-in/out device 10 which can travel on a passage formed along the front of a rack 1 in a frame structure is provided with a carriage 16 which is guided for lifting up and down along a pair of front and rear columns 12 which are vertically erected between a lower and upper frames 11, 13, and a carry-in/out device 17 which can advance and retreat from/into the storage part 2 of a rack 1 is disposed at the carriage 16. A cab 30 which is used for maintenance and inspection is mounted so as to be lifted up and down, on the opposite surface to the surface of the column 12 where the carriage 16 is guided for lifting up and down, and the cab 30 is lifted up and down by engaging the driving gear ring 51 of the cab lifting device 45 installed at the cab 30 side with the chain 41 whose upper and lower ends are connected to the respective frames 13, 11 as a body to be engaged.

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 loading / unloading used in, for example, an automated warehouse, and relates to a loading / unloading device with a cab having a loading / unloading carriage and a cab used for maintenance and inspection work. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as this type, there has been provided a traveling crane with a lifting cab as disclosed in Japanese Patent Laid-Open No. 1-312202. In this conventional configuration, the traveling main body of the traveling crane is configured by connecting a lower frame guided by the lower guide rail and an upper frame guided by the upper guide rail by a pair of front and rear columns to be integrated,
Further, the load transfer means is provided on the lift carriage that moves up and down between both columns.

A guide rail is attached to the outer side in the traveling direction by the other column, and an elevating cab is provided on the guide rail so as to be vertically movable. In order to raise and lower this lifting cab, a motor and speed reducer are installed in the lower frame below the column, and the lifting gear is mounted on the output shaft and the driven gear mounted on the upper frame. The drive chain is hooked and the lift drive chain is connected to the lift cab.

In this conventional structure, the traveling crane is capable of moving the traveling main body and moving the elevating carriage up and down by a manual operation while riding on the cab on the elevating carriage side or a remote operation from the ground side. By a combined operation of moving the load transfer means with a fork, it is possible to load and unload loads to and from a desired location on the shelf. The elevating cab is used during operation, for example, when performing repair work in an emergency such as a failure of the elevating carriage or a collapse of a load, and regular maintenance and inspection work.

That is, after the operator gets on the lifting cab, the motor is operated to rotate the lifting drive chain forward and backward, so that the lifting cab can be moved up and down along the guide rail, and the lifting cab is lifted. After stopping at a position facing the elevator, the operator can transfer from the elevator cab to the elevator carriage via the cab on the elevator cab side and the ramp on the elevator carriage side to perform desired repair work and maintenance inspection work. Is going.

[0006]

In the above-mentioned conventional structure, the motor and the like are provided in the lower frame, and the lifting drive chain is looped on the driven toothed wheels of the upper frame. The total length of the chain is almost twice the length of the column, and the chain stretches greatly due to shocks when starting and stopping the lifting cab, and the load (in this case, the weight of the lifting cab including the operator's weight). As a result, the lifting cab greatly bounces (unpleasant sway in the vertical direction) when the lifting is started or stopped. In addition, since the lifting drive chain is long, there is a cost disadvantage.

An object of the present invention is to provide a loading / unloading device with a cab capable of reducing shock at the time of starting and stopping and further shortening the length of a rope for raising and lowering the cab.

[0008]

In order to achieve the above object, the cab-equipped loading / unloading device according to the first aspect of the present invention comprises a traveling main body composed of a lower frame and a pillar standing upright from the lower frame. In the traveling direction, a carriage that can be raised and lowered is provided on one side of the pillar, and a cab that can be raised and lowered is provided on the other side of the pillar, and an engaged body is arranged along the pillar and an engaging action is exerted on the engaged body. The cab lifting device is provided on the cab side.

Further, in the cab-equipped loading / unloading device according to the second aspect of the present invention, the engaged body is composed of a cord body arranged between the lower frame side and the upper end side of the support column.

[0010]

According to the structure of the first aspect of the present invention described above, the loading / unloading device has a combination of moving the traveling main body by remote control and raising and lowering the carriage, so that the storage unit of the shelf can be operated. You can load and unload cargo. During such an operation, the cab is used, for example, when carrying out an emergency repair work in which the carriage side of the loading / unloading device has failed or a load collapse has occurred, or a periodic maintenance / inspection work.

That is, the operator gets on the cab stopped at the lowered position and operates the cab lifting device based on the operation inside the cab. Then, the cab elevating / lowering device engages with the engaged body linearly arranged along the support column, so that the cab is raised along the support column and moved to an arbitrary position such as a position facing the carriage. Can be stopped.

Next, the worker transfers from the cab to the carriage so that desired repair work and maintenance / inspection work can be performed. When the work such as the repair is completed, the cab is lowered to the lower limit by the reverse operation of the cab lifting device, and the worker gets on the ground to complete the series of work.

According to the second aspect of the present invention, when the cab lifting / lowering device is operated, the cab lifting / lowering device engages with the rope body linearly arranged along the supporting column to move the cab to the supporting column. Can be raised and lowered along.

[0014]

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. A pair of shelves 1 are arranged side by side with a passage in between, and a loading / unloading device 10 is arranged in the passage so as to be able to travel on a fixed path 4 in front of the shelves 1.

The loading / unloading device 10 includes a lower frame 11
Further, a traveling main body 14 is configured by a pair of front and rear columns 12 which are erected from the side of the lower frame 11 and which are square pipes (or round pipes), and an upper frame 13 which connects upper ends of the columns 12. And between these two columns 12, these columns
A carriage 16 is arranged which is guided up and down via guide rollers 15 having outer surfaces on both sides of 12 as guide surfaces. Further, on the carriage 16, an access device (fork) 17 that can be freely moved in and out of the storage part 2 is arranged. The upper frame 13 is guided by the rail 5 on the ceiling side.

A drive wheel 20 which is rollable on the floor rail 6 is attached to one end of the lower frame 11, and driven wheels 21 are attached to the other end. The traveling drive unit 22 attached to one end of the lower frame 11,
It is composed of a speed reducer interlocking with the drive wheels 20, a traveling drive device interlocking with the speed reducer (a motor with a flange type brake, etc.), and the like.

Further, at one end of the lower frame 11, a lifting drive unit 23 interlocking with the carriage 16 is attached. The lifting drive unit 23 is composed of a lifting drive device, a speed reducer, and the like, and the drive wheels 24 are linked to the speed reducer. One end side of a rope body (rope, chain, etc.) 25 hung on the drive wheel 24 is connected to a counterweight 26 in one of the columns 12 via a guide wheel arranged on the upper frame 13, and is also roped. The other end of the body 25 is connected to the upper portion of the carriage 16 via a guide wheel. On the side surface of the lower frame 11, the power unit 27 and the control unit 28
And are distributed to the front and back.

Outside of the traveling direction with the other support 12 (the other side)
A cab 30 used for maintenance and inspection or in an emergency is provided on the front and rear so that it can be moved up and down. That is, the main body 31 of the cab 30 has a box shape, and a bracket 32 for guiding a lifted / lowered guide is provided on the front side thereof.
Is provided, and a foldable door body 33 is provided on one side so as to be openable and closable. Here, the cab 30 is attached to the cab guide rail 18 mounted on the outer side of the support column 12 by the bracket 32.
It is held so as to be able to move up and down through a plurality of rollers provided on the.

A cab-side trap 34 located forward from the other side of the closed door 33 is continuously provided integrally with a bottom plate 35 of the main body 31, and the other side edge portion of the cab-side trap 34 is provided. A safety fence 37 is erected.

A carriage side trap 38 is continuously provided from the other side of the carriage 16 so that the cab side traps 34 can be opposed to each other with a gap, and a safety fence 39 is provided at the other side edge of the carriage side trap 38. Is erected. In the main body 31 of the cab 30, a cab internal control panel 40 is provided,
Further, the bracket 32 is provided with a fall prevention device 29 capable of acting on the cab guide rail 19.

In order to move the cab 30 up and down along the cab guide rail 19, a chain (an example of an engaged body and an example of a rope) 41 is arranged between the lower frame 11 and the upper frame 13. Both ends of the chain 41 are connected to the lower frame 11 and the upper frame 13 via the connecting members 42, respectively.
Are linked to. A cab lifting device 45 that engages with the chain 41 is provided on the cab 30 side.

That is, a case 46 is provided on the lower surface side of the bottom plate 35 in the main body 31, and the cab lifting / lowering device 45 is provided in the case 46. This cab lifting device 45
A motor 47, a speed reducer 48 and a brake device 49 that are interlocked with the motor 47 in the front-rear direction, a drive toothed wheel 51 attached to an output shaft 50 of the speed reducer 48, and arranged in front of the drive toothed wheel 51. It consists of a pair of upper and lower idler teeth 52, 53. Then, the chain 40 is wound around the upper idler gear 52 from the front side to be engaged with the drive toothed ring 51 from the rear side and then engaged with the lower idler gear 53 from the front side. It is rotated and engaged.

An operating shaft 55 is interlocked with the brake device 49 via a differential device 54, and the operating shaft 55 projects into the main body 31 and has a handle 56 for rotation on the projecting part.
Is provided. A lever 57 for opening the brake device is provided on the handle 56.

In the above embodiment, the loading / unloading device 10 is
In response to an operation command or the like via the control unit 28, the traveling drive unit 22 is actuated to move the traveling body 14, the elevator drive unit 23 is actuated to move the carriage 16 up and down, and the loading / unloading tool 17 is forked. By carrying out a combination operation with moving, the load 3 can be loaded / unloaded into / from the intended storage section 2 of the shelf 1.

The cab 30 is used when carrying out an emergency repair work such as a breakdown or a collapse of the cargo on the side of the carriage 16 and a regular maintenance work. That is, the cab 30 is stopped at the lower limit near the lower frame 11, and the operator can board the cab 30.
Next, the boarded operator operates the in-cab operation panel 40 to rotate the motor 47 of the cab lifting / lowering device 45 in the forward and reverse directions by an operation command via the control unit 28. Then, the drive toothed wheels 51 are rotated in the forward and reverse directions via the speed reducer 48 and the output shaft 50.

Accordingly, the drive toothed wheel 51, which is constantly engaged (engaged) with the chain 41 linearly (rack-shaped) arranged between the upper and lower frames 13 and 11, is forced to rotate. The cab 30 can be raised along the cab guide rail 19. Then, for example, when repairing a load collapse, the cab 30 may be stopped facing the carriage 16. At this time, the cab side trap 34 is opposed to the carriage side trap 38 at the same level.

After stopping the rising of the cab 30 and operating the brake device 49 as described above, the operator first opens the door 33 and comes out on the cab-side trap 34. The worker is protected by the safety fences 37 and 39, and can move from the cab side turret 34 to the carriage side talup 38, whereby desired repair work and maintenance inspection work can be performed.

After performing the intended work in this way,
The operator can return from the carriage 16 to the cab 30 by using both the ramps 38 and 37. Then, the cab 30 is lowered to the lower limit, and the worker descends to the ground side, thereby completing a series of work using the cab 30.

When the cab 30 is used as described above, for example, when the cab 30 is stopped at an upper portion or an intermediate portion of the ascending / descending path due to an electric system failure or a power failure, an operator manually operates the cab 30 inside the main body 31. Can be lowered. That is, the operator first operates the lever 57 while holding the handle 56 to open the brake device 49. Then the handle 56
The rotational force is transmitted to the drive toothed wheel 51 by rotating the wheel, and the cab 30 can be lowered to the lower limit.

With the construction in which the cab 30 is lowered by such a manual operation, the conventional emergency escape ladder can be eliminated. Further, in order to ensure sufficient safety during manual lowering, when the hand slips off the handle 56, the lever 57 is also opened and the brake device 49 is automatically applied. When the chain 41 is broken when the cab 30 is moved up and down, the fall prevention device 29 automatically operates, whereby the fall of the cab 30 is prevented.

In the above embodiment, the rope body (chain 41) is shown as an example of the engaged body.
It may be a rack arranged vertically on the other side of the
In this case, the pinion that interlocks with the output shaft of the cab lifting / lowering device 45 engages with the rack.

[0032]

According to the first aspect of the present invention having the above-described structure, the length of the engaged body can be made as short as the length of the support column, and shocks at the time of starting and stopping the cab can be reduced, and when the cab is started and raised. Bounce of the cab when stopped can be reduced.

Further, according to the second aspect of the present invention having the above-mentioned structure, the total length of the rope (chain or the like) can be made as short as the length of the supporting column, and shocks at the time of starting and stopping the cab or when the cab is lifted or the rope is damaged by the load. The amount of extension can be reduced, and the cab can be prevented from bouncing at the time of starting and stopping the elevator.
Further, since the length of the cord is short, it is advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a side view of an automated warehouse using a cab-equipped loading / unloading device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway side view of a cab portion of the same cab-equipped loading / unloading device.

FIG. 3 is a cross-sectional plan view of a cab portion of the same cab-equipped loading / unloading device.

[Explanation of symbols]

 1 Shelf 10 Loading / unloading device 11 Lower frame 12 Struts 13 Upper frame 14 Traveling body 16 Carriage 16 Carrying out / outgoing device 18 Cab guide rail 22 Traveling drive unit 23 Lifting drive unit 28 Control unit 30 Cab 31 Main body 33 Door body 34 Cab side ramp 38 Carrage Side ramp 40 Cab operation panel 41 Chain (engaged body and rope) 45 Cab lifting device 47 Motor 49 Braking device 51 Drive tooth ring 52 Idling gear wheel 53 Idling gear wheel 55 Operation shaft 56 Handle 57 Lever

Claims (2)

[Claims] 1. A traveling main body is composed of a lower frame and a support erected from the lower frame, and a carriage that can be raised and lowered is provided on one side of the support in the traveling direction of the traveling main body, and on the other side. A cab that can be raised and lowered is provided, and an engaged body is arranged along the pillar,
A loading / unloading device with a cab, wherein a cab raising / lowering device that engages with the engaged body is provided on the cab side. 2. The loading / unloading device with a cab according to claim 1, wherein the engaged body is constituted by a rope body arranged over the lower frame side and the upper end side of the column.