JPH0355717Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stacked crane type multi-level parking lot.

[Conventional technology]

An example of a multi-story parking lot using a conventional stacker crane is disclosed in Japanese Patent Application Laid-Open No. 141178/1983.

This system is equipped with a large number of shelves along the travel path of the stacker crane, with an entrance and a depalletizer at one end, and an exit and a palletizer at the other end.

When warehousing, one pallet is supplied from the depalletizer to the warehousing entrance using a conveyor, and the vehicle is placed on this pallet. This on-vehicle pallet is supplied to the transfer port with the stacker crane by a roller conveyor. A stacker crane supplies the on-vehicle pallets to the shelves.

When a delivery command is given, the on-vehicle pallet is transported to the transfer port by a stacker crane, and then delivered to the delivery port by a roller conveyor.

The pallets remaining at the exit are fed to the palletizer by a conveyor.

In this way, on-vehicle pallets are transported by roller conveyors. The pallet is made of steel plate for strength.

When pallets are thin and transported on a roller conveyor, there is concern that the pallets may be deformed and cracked due to repeated bending forces between the rollers.

[Problem that the invention attempts to solve]

The above-mentioned conventional technology does not take into account the life of the pallet, and has the problem of cracking occurring relatively early.

The purpose of the present invention is to extend the life of pallets by using a conveying method that does not cause repeated bending of the pallets.

[Means for solving problems]

The above purpose is to transport pallets using a suspended cart instead of a roller conveyor.
achieved.

[Effect]

When conveying on-vehicle pallets, the pallets are held on a pedestal that can be raised and lowered from a suspended truck to prevent repeated bending that occurs when conveyed on rollers.

〔Example〕

The present invention will be explained below with reference to an embodiment shown in FIGS. 1 to 10.

In FIG. 2, reference numeral 1 designates a well-known stacker crane, which travels on a travel path between shelf groups 5 and 6 on both sides. The stacker crane 1 is equipped with an elevating platform, and the elevating platform is equipped with forks that protrude into storage shelves on both sides. Shelf groups 5 and 6 consist of a large number of storage shelves.

Here, the stacker crane 1 and the shelf groups 5 and 6 on both sides thereof are considered as one set, and two sets are installed in parallel.

10 is a floor that supports the rail 2 and shelf groups 5 and 6 of the stacker crane 1, and is located above the surface GL of the roadways 13 and 14 for vehicles entering and exiting the warehouse. The floor 10 is supported by pillars provided appropriately on the plane GL. As a general rule, the pillars are not below the shelf groups 5 and 6, but below the running path of the stacker crane 1. Additionally, it is located in a location that does not impede the running of the vehicle or the walking of passengers.

The height of the floor 10 is such that vehicles and passengers can pass underneath it. 2nd floor above floor 10,
The area below floor 10 is called the first floor.

An entry/exit entrance 11 is provided on the surface GL. The storage entrance and the storage exit may be provided separately.
The entrance 11 is surrounded by a wall, and gates 20 for entering and exiting the warehouse are provided at the front and rear ends.

The vehicle 15 enters from the left side of FIG. 1 and exits from the right side. The storage opening 11 is located below the shelf group 5, and is located below the storage shelf in the second row from the left in FIG. The first storage shelf above the loading/unloading port 11 serves as a transfer port 12, and the floor 10 is open so that pallets 30 can pass therethrough.

A pallet receiving seat 16 is provided at the entrance/exit 11 for placing an on-vehicle pallet 30. The height of this pallet receiving seat 16 is such that when the pallet 30 is placed on it, the road surface and the roadways 13, 14 substantially match.

The pallet seats 16 are provided at four points, front, back, left and right, and these four make up a set of pallet seats 16.

Pallet seats 16 are provided at the front and rear ends to prevent the pallet 30 from being lifted up as the vehicle 15 travels.

The first-stage storage shelves in the third to sixth rows of the shelf group 5 serve as storage ports 7 for transferring on-vehicle pallets to and from the stacker crane 1. There is a rail 45 above the first storage shelf, on which a suspended trolley 40 carrying on-vehicle pallets travels. The suspension truck 40 travels while suspending on-vehicle pallets between the transfer port 12 above the loading/unloading port 11 and the storage ports 7, 7, 7, 7 in the third to sixth rows. The suspension cart 40 suspends a pick car 43 which can be lowered to the entrance/exit 11 with a rope. The suspension truck 40 lifts up the on-vehicle pallet on the pallet seat 16 at the entrance/exit 11 and then transports it to the storage opening 7. The on-vehicle pallet supported on the pallet seat 19 of the storage port 7 is stored in the storage shelf 8 in the shelf groups 5 and 6 by the stacker crane 1.

Supply of power for traveling of the suspension carriage 40 and a suspension carriage 41 to be described later is carried out along the rail 45 by known means such as a contact wire.

In FIG. 1, reference numeral 41 is a suspension truck for a pallet magazine for transporting pallets between the pallet storage section 17 and the entrance/exit 11. The pallet storage section 17 is located at the first stage of the first row of the shelf group 5, and is located on the pallet receiving seat 1 that supports stacked pallets.
It has 9. This pallet storage section 17 can be transferred to and from the stacker crane 1, and the stacked pallets can be stored in the storage shelves 8 of the shelf group, or can be transferred to the storage shelves 8.
You can issue goods from.

The suspension cart 41 can grasp the pallet at the top of the pallet storage section 17.

The suspension truck 40 and the suspension truck 41 are substantially the same. The only difference between the two is the height of the picker 43. According to FIGS. 5 to 10, the suspension trolley 41
Explain to the subject. The suspension trolley 41 includes a picker 43 that hangs a pallet or a pallet mounted on a vehicle, and a trolley 4 that moves up and down the picker 43.
4, and a rail 45 for running the trolley 44. Figure 8 shows the pallet supported.

The trolley 44 is mounted on a rail 45 with two wheels 50 provided at four points, front, rear, left and right.
The rail 45 is made of two I-beams. Traveling motors 51 are attached to two wheels 50 located diagonally. The wheel 50 is attached to the frame 5 via the seat.
5 is hanging. A hoisting device consisting of a hoisting motor 56, a reduction gear 57, and a drum 58 is installed on the upper surface of the frame 55. Four ropes 60 are let out from the drum 58 in the front, back, left and right, and are passed through a sheave 61 provided on the frame 55 to the picker 43.
is hanging.

Pipes 63 with enlarged lower ends are attached to four points on the front, rear, left and right sides of the lower surface of the frame 55. On the other hand, on the upper surface of the frame 65 of the picker 43, four guides 66 having small diameter tips are erected. Pitzker 4
3 rises, the guide 66 enters the pipe 63.

Pallet receiving seats 67 for supporting the pallets 30 are suspended from four points on the front, rear, left and right sides of the rectangular frame 65 of the picker 43 so as to be rotatable in the horizontal direction. 68
is its rotation axis, which passes through the guide tube 69 and the frame 55 and projects upward.

The rotating shaft 68 is suspended. The tube 69 is fixed to the frame 55. A lever 70 is attached to the upper end of the rotating shaft 68. The levers 70, 7 of the two rotating shafts 68, 68 on both sides of the frame 65 in the width direction
0 are connected by links 71, 71. Driving cylinder devices 73, 73 are attached parallel to these links 71, 71, respectively. The rod of the cylinder device 73 is a link 7 that can freely rotate in the horizontal direction.
It is attached to one end of 4. The other end of the link 74 is connected to the link 71. A central pin 75 of the link 74 is provided on the frame 65.

FIG. 7 shows the pallet receiver 67 in a retracted state. When the rod of the cylinder device 73 is moved backward, the pallet seat 67 protrudes.

In FIG. 9, a pair of photoelectric switches 78 for detecting the presence or absence of the pallet 30 are installed on the sides of the cylinders 69, 69 at one end of the picker 43 in the length direction.

When the switch 78 detects light blocking due to the lowering of the frame 65, the lowering of the frame 65 is stopped and the pallet seat 67 projects toward the pallet 30. To explain the mounting positions of the photoelectric switch 78 and the pallet catch 67, the photoelectric switch 7
A pallet receiving seat 67 is provided so as to be able to protrude into a gap 80 between the topmost pallet of the stacked pallets and the second pallet from the top when the pallet 8 detects light shielding. This allows the pallet at the top of the stacked pallets and the pallet at the entrance/exit 11 to be lifted up.

The switch 78 and the rotating shaft 68 are provided outside the widthwise ends of the pallet 30.

A reinforcing plate 30a is provided on the back side of the pallet 30,
It is arranged so that it hits the lower pallet 30. This provides the gap.

A limit switch 82 is installed on the pallet seat 67 to detect the presence or absence of a pallet.
A lever 83 of the limit switch 82 projects from below the pallet seat 67 to the upper surface through an opening 84 and extends horizontally. This limit switch is attached to two pallet seats 67 located diagonally.

When the picker 43 carrying the pallet is lowered and the limit switch 82 detects OFF, it means that the pallet has landed at the entrance 11 or at the top of the stacked pallets. By this, Pitzker 4
3 is stopped, and the pallet receiver 67 is moved backward.

In FIG. 4, the pallet receiving seat 6 of the picker 43 is mounted on the platform 86 of the entrance 11.
A recess 87 is provided in which a rotary shaft 68, rotary shaft 68, etc. can be inserted. This allows the pallets 30 to be supplied and recovered.

The suspension truck 40 has a similar structure, but since it handles on-vehicle pallets, the length of the tube 69 is sufficiently long so that the frame 65 does not interfere with the vehicle.

The warehousing operation will be explained.

The pallet storage section 17 stores stacked pallets. The suspension cart 41 stops at the first row, and the pick car 43 is lowered using a hoisting device. When the photoelectric switch 78 detects light blocking, the picker 43
is stopped, and the pallet receiver 67 is projected into the gap 80 using the cylinder device 73. Next, by raising the picker 43, one pallet 30 can be lifted. With the guide 66 inserted into the pipe 63, the drive motor 51 is used to drive the guide 66 toward the entrance/exit 11.

When the trolley 44 arrives at the entrance 11,
Lower the picker 43. When the pallet of the picker 43 is placed on the pallet seat 16 of the entrance/exit 11, the pallet 30 floats up from the pallet seat 67 of the picker 43, so the limit switch 82 is activated.
Turn off. By turning this OFF, the downward movement of the picker 43 is stopped and the pallet receiving seat 67 is moved backward.

Next, the picker 43 is raised, and after the raising is completed, it is returned to the first row. The picker 43 waits with the pallet lifted.

After the passenger who has placed the vehicle on the pallet 30 at the entrance/exit 11 gets off the vehicle, he/she issues a command to enter the vehicle. When there is a warehousing command, the suspended trolley 40 waiting at the transfer port 12
After lowering the picker 43 in the same manner as the suspension truck 41 and receiving the on-vehicle pallet 30, the picker 43 is raised and hoisted up to the transfer port 12 level. Thereafter, the vehicle travels to the empty storage port 7, places the on-vehicle pallet 30 on the pallet seat 19 of the storage port 7, and moves on to the next operation. Normally, during this operation, the above-mentioned suspended truck 41 is transporting the pallet 30 to the entrance/exit 11, so the next vehicle is stored. The on-vehicle pallet at the storage port 7 is transported to the storage shelf by the stacker crane 1.

Explain about shipping.

When there is a command to take out the warehouse, the stacker crane 1 carries out the on-vehicle pallet from the storage shelf 8 to the transfer port 12. If there is no on-vehicle pallet 30 at the transfer port 12,
It is delivered to the transfer port 12. If there is an on-vehicle pallet at the transfer port 12, this on-vehicle pallet is transferred to the suspension truck 40.
Wait until the item is shipped. If you are waiting for stock,
After the stacker crane 1 transports the on-vehicle pallet at the transfer port 12, it instructs the suspension truck 40 to run.
The suspension trolley 40 which has lifted the on-vehicle pallet in the reverse order of the warehousing operation moves and places the pallet on the pallet seat 16 of the entrance 11, then hoists the picker 43 and moves on to the next command operation.

When the vehicle leaves the warehouse through the entry/exit entrance 11 and a command is given, the suspended trolley 42 starts collecting pallets. At the entrance/exit 11, the picker 43 is lowered. When the photoelectric switch 78 detects light blocking,
The descent of the picker 43 is stopped and the pallet receiver 67 is made to protrude. Next, the picker 43 is raised. Next, it is run to the pallet storage section 17. Lower the picker 43 and place the pallet receiver 6
When limit switch 82 of No. 7 detects OFF,
Since this indicates that the pallet on the pallet receiver 67 has been placed on top of the pallet in the storage section 17, the lowering of the picker 43 is stopped and the pallet receiver 67 is rotated to remove it from the range of the pallet. Next, the picker 43 is raised and put on standby.

When a predetermined number (for example, six) of pallets are stored in the pallet storage section 17, the stacker crane 1 transports the pallets to an empty storage shelf 8. Conversely, when there are no more pallets in the pallet storage section 17, the stacker crane 1 supplies stacked pallets from the storage shelves 8.

As described above, it is possible to carry out warehousing and unloading without using a conveyor for transporting on-vehicle pallets. Therefore, the pallet is not subjected to repeated bending loads that occur when the pallet is conveyed by the conveyor, so the life of the pallet is greatly extended, and since no noise is generated during conveyance by the conveyor, a quiet parking lot can be provided.

The height from the first stage pallet receiving seat 19 to the rail 45 is made sufficiently large, and the suspension trolley 40 is mounted on the first stage.
The pallet storage section 1 can be moved up to the row, and the picker 43 of the suspended trolley 40 can be moved up to the pallet storage section 1.
If it is possible to reach a position where the topmost pallet of the stacked pallets stored in the pallet storage area 7 can be handled, a suspended cart 40 can be used to transport the pallet 30 between the pallet storage section 17 and the entrance/exit 11. This makes it possible to eliminate the need for the suspension cart 41. In addition, if the height of the rail 45 is taken into consideration so that the suspended trolley carrying the vehicle can run above the vehicle mounted on the pallet receiving seat 19, the pallet mounted on the vehicle will be placed on the third row. It is also possible to transport on-vehicle pallets to the empty shelves in the fourth row and above.

[Effect of idea]

As described above, according to the present invention, an on-vehicle pallet can be transported from storage to storage without using a roller conveyor, which has the effect of extending the life of the steel plate pallet.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a stacked crane type multi-level parking lot according to an embodiment of the present invention, and Fig. 2 is a -A--
A sectional view, Fig. 3 is a BB sectional view of Fig. 1, Fig. 4
The figure is a plan view of the entrance/exit, FIG. 5 is a front view of a suspension trolley according to an embodiment of the present invention, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is a sectional view taken along line C-C in FIG. 5. , FIG. 8 is a right side view of FIG. 5, FIG. 9 is a longitudinal sectional view of the pallet receiver of FIG. 5, and FIG. 10 is a plan view of FIG. 9. 1...Statuka crane, 5, 6...Shelf group, 1
0...floor, 11...warehousing/exit door, 12...transfer port,
7... Storage opening, 13, 14... Roadway, 15... Vehicle, 16... Pallet receiver, 17... Pallet storage section, 30... Pallet, 40, 41... Suspended trolley, 43... Picker, 44...Trolley, 45
……rail.

Claims (1)

[Claims for Utility Model Registration] A shelf group having a large number of storage shelves in the height direction and the horizontal direction, and a stacker that carries on-vehicle pallets and travels along the shelf group between the storage shelves and the storage opening. a crane; a loading/unloading port that is used for loading or unloading and is provided below the shelf group and has a pallet receiver; a storage shelf above the loading/unloading port, the lower surface of the storage shelf and the A transfer port with a total of three openings on both sides of the adjacent storage shelf, and a pallet provided in the storage shelf adjacent to one end of the transfer port for storing stacked pallets. a storage port, which is provided on a storage shelf adjacent to the other end of the transfer port and has a pallet receiving seat on which a vehicle-mounted pallet is placed; A suspension cart is installed to be suspended from a rail installed at the top, and runs between the transfer port and the storage port, and between the transfer port and the pallet storage section, A suspended trolley consists of a trolley that runs on rails,
The picker is suspended from the trolley so that it can be raised and lowered, and has a pallet receiver that supports the lower surface of the pallets by rotating in the horizontal direction. The on-vehicle pallet is suspended and transported by the picker via the transfer port between the warehouses, and the pallet is suspended by the picker via the transfer port between the loading/unloading port and the pallet storage section. A stacked crane type multi-storey parking lot characterized by the following: