JP2000255760A - Carrying-in/out device for elevator, and pallet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with vertical motion operation of a shipping conveyer for the purpose of switching a carrying-in/out direction of a load to an elevating cage, and to simplify and lighten a device within the elevating cage. SOLUTION: In a internal conveyer unit 1 set in an elevating cage, a first shipping conveyer 12 has a conveying plane formed by conveyer chains 121 extending corresponding to groovelike spaces 137A-137E formed between rollers 131 of a second shipping conveyer 13, while the conveying plane is disposed under a conveying plane formed by the rollers 131 of the second shipping conveyer 13. A pallet 2 has lower projecting stripes 22A-22E projectingly formed on its lower face corresponding to the groove-like spaces 137A-137E. The pallet 2 is supported on the conveyer chains 121 in non-contact with the second shipping conveyer 13 with the lower projecting stripes 22A-22E. Accordingly, a load does not interfere with the second shipping conveyer 13 in the case of the Y-direction conveyance by the first shipping conveyer 12, while the load does not interfere with the first conveyer 12 in the case of the X-direction conveyance by the second shipping conveyer 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for transporting goods between floors in various warehouses having a plurality of floors in a vertical direction, a distribution center, etc., and in particular, to simultaneously carry goods in different directions. Related to the technology that makes it possible.

[0002]

2. Description of the Related Art A loading / unloading device for transferring a load to / from an elevator car of an elevator at a loading / unloading entrance on each floor of the elevator includes a loading conveyor installed in the elevator car, and a loading / unloading device on the floor of each floor. It is known to have an external loading conveyor installed corresponding to the loading conveyor toward the entrance. In this device, the package is first loaded from the external loading conveyor on the floor of the transport source to the loading conveyor of the elevator car using a dedicated pallet,
The elevator car vertically transports the goods to the destination floor, and unloads the goods from the load conveyor to the external load conveyor on the destination floor. The pallets emptied by being unloaded from the external unloading conveyor at the destination floor are transferred from the external pallet return conveyor below the external unloading conveyor at the destination floor to the outside of the source floor by an elevator car. It is returned to the pallet return conveyor and is used for transporting the load.

[0003] However, according to this type of apparatus, it is not possible to carry goods in opposite directions between different floors in parallel. Conventionally, as shown in FIG. 10, a device for carrying a load in the opposite direction in parallel has been developed.

[0004] In the prior art shown in FIG. 10, the luggage is installed in an elevator car 101 of an elevator and the luggage conveyance directions are mutually 90 degrees.
° Different first and second conveyors 102, 103
Consists of That is, the first loading conveyor 102 composed of a plurality of chain conveyors transports the load in the Y direction, and the second loading conveyor 103 composed of the roller conveyor transports the load in the X direction.

[0005] On each floor, facing the elevator,
The first external unloading conveyor 104 whose luggage transport direction is the same as the first unloading conveyor 102 (Y direction), and the unloading direction is the same as the second unloading conveyor 103 (X
Direction), a second external unloading conveyor 105 is installed. The first conveyer 102 is vertically moved (perpendicular to the drawing) through a groove-like space 103a extending in a direction (Y direction) perpendicular to the conveying direction of the second conveyer 103 by a vertical moving mechanism (not shown). Direction).

In other words, according to this loading / unloading device, when the luggage is transferred between the first external loading conveyor 104 and the elevator car 101, the first loading conveyor 102 in the elevator car 101 is moved up and down. The moving mechanism floats above the second loading conveyor 103, so that the first external loading conveyor 104 and the first loading conveyor 102 can carry in and out the cargo in the Y direction. In the case where the transfer of the luggage is performed between the second external unloading conveyor 105 and the elevator car 101, the elevator car 1
01 is moved from the groove-shaped space 103a of the second loading conveyor 103 by the vertical movement mechanism to the second loading conveyor 103.
And the second external loading conveyor 105 and the second loading conveyor 103
It enables loading and unloading of luggage in the direction.

[0007]

However, according to the above-mentioned conventional loading / unloading device, the first external loading conveyor 10
In the case of carrying in / out of goods in the Y direction between the elevator car 4 and the elevator car 101, and in the case of carrying in / out of goods in the X direction between the second external cargo conveyor 105 and the elevator car 101, Since the first conveyer conveyor 102 in the elevator car 101 must be moved up and down the second conveyer conveyor 103 each time, a time loss is generated. Moreover, in the elevator car 101, in addition to the first and second conveyors 102 and 103, a device for vertically moving the first conveyor 102 is required. It is pointed out that the weight of the inside increases.

SUMMARY OF THE INVENTION The present invention has been made under the above circumstances, and its main technical problem is to move up and down a transporting conveyor for switching the direction of loading and unloading of a load to and from an elevator car. And to simplify and reduce the weight of the device in the elevator car.

[0009]

Means for Solving the Problems The technical problems described above are:
This can be effectively solved by the present invention. That is, the present invention, the internal conveyor unit installed in the elevator car of the elevator, comprises a first and second loading conveyors in which the transport direction of the load intersects each other, the first loading conveyor is the second The transporting conveyor has a plurality of parallel transport surfaces extending corresponding to the plurality of groove-shaped spaces formed in a direction intersecting the transport direction thereof, and the transport surface is higher than the transport surface of the second transport conveyor. An object of the present invention is to provide an elevator carrying-in / out device, which is located on a lower side. In addition, the present invention provides a pallet used in the elevator loading / unloading device, a plate-shaped main body, and the second loading / unloading device in the elevator loading / unloading device in a direction parallel to each other on a lower surface of the plate-shaped main body. It comprises a plurality of lower ridges protruding corresponding to each groove-shaped space of the conveyor, and the lower ridge reaches the first loading conveyor from the second loading conveyor through the grooved space. Another object of the present invention is to provide a pallet having a height, wherein the plate-shaped main body is supported in a non-contact state with the second conveyer via the ridge.

According to the carrying-in / out device of the present invention, since the transport surface of the first loading conveyor is lower than the transport surface of the second loading conveyor, the transporting surface of the second loading conveyor is lowered at a predetermined stop floor. The first conveyer does not interfere with the transport of the load when carrying in and out the load. In addition, the pallet according to the present invention is used for carrying in / out the cargo to / from the elevator car by the first cargo conveyor. In this pallet, the lower ridge is supported by the first conveyer through the groove-shaped space in the second conveyer, so that the pallet is moved from the second conveyer via the plate-shaped main body on the lower ridge. Since the load is supported on the upper side, there is no need to raise the first loading conveyor to a position higher than the second loading conveyor.

In the elevator loading / unloading device of the present invention, more preferably, the pallet whose transport direction is opposite to that of the first loading conveyor is located below a first loading conveyor through a predetermined space capable of accommodating the pallets. A return conveyor is arranged, on the floor of the stop floor of the elevator, an external load conveyor capable of forming a continuous transport path with the first load conveyor, and the pallet return conveyor below the external load conveyor. An external pallet return conveyor capable of forming a continuous transport path, and a lift conveyor for receiving and transferring pallets between the external load transport conveyor and the external pallet return conveyor and moving the pallet up and down are arranged. In this case, the pallet is the external pallet return conveyor on the source floor → lift conveyor → external load conveyor → first load conveyor of the elevator car → external load conveyor on the destination floor → lift conveyor → external pallet return conveyor → elevating Cargo is conveyed while circulating in a route such as a pallet return conveyor of a car → an external pallet return conveyor on the floor of the transport origin.

More specifically, the second unloading conveyer comprises a number of rollers which are rotated around an axis perpendicular to the conveying direction, a sprocket provided coaxially with each of the rollers, and a sprocket provided with each of these rollers. And a driving endless chain that meshes from below with a roller conveyor, and the first loading conveyor includes a chain conveyor whose transport surface passes through a groove-shaped space between the rollers above the driving endless chain. With this configuration, it is possible to provide a structure in which the first and second unloading conveyors do not interfere with each other.

[0013]

FIG. 1 is a plan view of a preferred embodiment of the present invention as viewed from vertically above, and FIG. 2 is a sectional view taken along the arrow I in FIG. 1 and taken along lines II-II and III-III. FIG. 3 is a sectional view taken along lines IV-IV and VV. In this embodiment, reference numeral 1 denotes an internal conveyor unit installed in an elevator car (to be described later) of an elevator, and reference numeral 2 denotes a pallet used for carrying goods by the internal conveyor unit 1.

The internal conveyor unit 1 includes a first conveyer 12 composed of a chain conveyer, a second conveyer 13 composed of a roller conveyer, and a pallet composed of a roller conveyer located below the first conveyer 13. A return conveyor 14 is provided, and each is attached to the machine base 11.

The second conveyer conveyor 13 composed of a roller conveyor has a plurality of elongated cylindrical rollers 131 arranged in the X direction. Each of the rollers 131 extending in a direction orthogonal to the X direction (Y direction). Both ends of the central shaft are rotatably supported on the machine base 11 via bearings 132, respectively. The rollers 131 are paired two by two, and between each pair of rollers, lower ridges 22A to 22A to
Groove-like spaces 137A to 137 through which 22E can pass in the Y direction
E is formed.

At one end of each roller 131, a sprocket 133 is axially mounted at a position corresponding to each other.
Below the row of the sprockets 133, a pair of double-end sprockets 1 attached to both ends of the machine base 11 in the X direction are provided.
A driving endless chain 134 wound around a loop 35 is disposed.
Are engaged with the respective sprockets 133 from below.
Further, the endless chain 134 is maintained in a reliable meshing state with each of the sprockets 133 by a chain guide 136 shown in FIG.

That is, the second conveyer 13
Is one of the two end sprockets 135, 135,
The endless chain 134 is folded back and forth between the sprockets 135 and 135 by being driven to rotate in either the forward or reverse direction by a motor (not shown) or the like. And the two end sprockets 135, 135
Each roller 131 is rotated through each sprocket 133 meshing with the endless chain 134, and carries in / out the load in the X direction.

The first unloading conveyor 12 composed of a chain conveyor has three conveyor chains 121 extending in the Y direction and arranged at predetermined intervals in the X direction. A pair of shafts 122, 122 extending in the X direction are attached to both ends in the Y direction of the machine base 11 via bearings (not shown), and five shafts in the second unloading conveyor 13 are attached to each shaft 122. Groove space 137A-
137E, both ends and an intermediate groove-shaped space 137A, 137E
Three sprockets 123 are respectively mounted on the shafts corresponding to the X-direction positions of 7C and 137E. Each of the conveyor chains 121 is wound in a loop between sprockets 123, 123 corresponding to the Y direction, and the upper part of the conveyor chain 121 turned over the sprockets 123 is provided with the groove-shaped space 13 respectively.
7A, 137C, and 137E, and are supported by the chain guide 124 from below.

The upper part of each conveyor chain 121 of the first unloading conveyor 12, ie, the groove-shaped spaces 137A, 137
7C and 137E, the portion supported by the chain guide 124 passes above the endless chain 134 that drives each roller 131 of the second conveyer 13 as shown in FIG. , Each of the conveyor chains 121 turned below the sprocket 123
Extends below the endless chain 134. For this reason, the first loading conveyor 12 and the second loading conveyor 13 have a conveyance direction of 9
Despite the difference of 0 °, the structure does not interfere with each other.

The pallet return conveyor 14 has a plurality of elongated columnar rollers 141 arranged in the Y direction. Both ends of the center axis of each roller 141 extending in the X direction are placed on the machine base 11 via bearings 142, respectively. A space 14S (see FIGS. 2 and 3) in which the pallet 2 can be taken in and out in a horizontal direction is secured between the roller 141 and the first conveyer 12 above the roller 141. ing. A sprocket 143 is axially mounted on one end of each of the rollers 141.
The endless chain (not shown) that meshes with the first feeding conveyor 12 is provided with a driving force from a common driving source, and is driven to rotate in a direction opposite to the sprocket 123 in the first feeding conveyor 12. It has become.

That is, the pallet return conveyor 14
Means that each roller 141 is synchronized with the first conveyer 12 and the sprocket 1 of the first conveyer 12
By rotating the pallet 2 in the direction opposite to the direction 23, the empty pallet 2 is moved in and out of the space 14S in the Y direction. For example, when the first unloading conveyor 12 operates in the direction of loading a pallet 2 loaded with cargo, the pallet return conveyor 14 operates to unload the empty pallet 2 thereon from the space 14S, When one of the loading conveyors 12 operates in the direction of unloading the pallets 2 loaded with the load, the pallet returning conveyor 14 operates to receive the empty pallets 2 into the space 14S.

As shown in FIG. 4, the pallet 2 has a plate-shaped main body 21, a plurality of (five) lower protrusions 22A to 22E projecting from the lower surface thereof in parallel with each other. An edge member 23 is provided on the outer peripheral portion of the upper surface of the main body 21. The lower ridges 22A to 22E are respectively provided in the groove-shaped spaces 137A to 137 of the second loading conveyor 13.
E and the height of the conveyor chain 12 of the first loading conveyor 12 and the upper transport surface of each roller 131 in the second loading conveyor 13.
1 is greater than the height difference from the upper end conveyance surface. Therefore, the lower protrusions 22A, 22C, and 22E at both sides and the middle of the lower protrusions 22A to 22E are:
Through the groove-shaped spaces 137A, 137C and 137E, respectively, the plate-like main body 21 is supported on the conveyor chain 121 of the first loading conveyor 12 at a position higher than the roller 131 in the second loading conveyor 13. It has become.

FIG. 5 schematically shows the entire transport system including the elevator. The elevator 3 has a tower room 33 that forms an elevating and moving space for the elevator car 31, and the tower room 33 includes a first loading conveyor 1 in the internal conveyor unit 1 installed in the elevator car 31.
The loading / unloading entrances 33A and 33B are opened corresponding to the loading / unloading directions of the second and second loading / conveying conveyors 13 and located on each floor of the building. At the upper end of the tower room 33, an electric motor 34 for moving the elevator car 31 up and down to a desired floor via a main rope 35 is installed.

Each floor at the stop floor of the elevator 3 (not shown;
In FIG. 6, F ₁ and F ₂ ) include a first external loading conveyor 4 capable of forming a continuous conveyance path with the first loading conveyor 12 in the internal conveyor unit 1 of the elevator car 31, and the internal conveyor unit 1. An external pallet return conveyer 5 capable of forming a continuous conveyance path with the pallet return conveyer 14, and a lift conveyor for transferring the pallet 2 between the first external load conveyer 4 and the external pallet return conveyer 5 and moving the pallet 2 up and down. 6 and the second unloading conveyor 13 in the internal conveyor unit 1
The second external unloading conveyor 7 capable of forming a continuous conveyance path is provided.

As described above, the first external load conveyor 4 and the external pallet return conveyor 5 are connected to the first conveyor 1 in the internal conveyor unit 1 of the elevator car 31.
2 and a pallet return conveyor 14, respectively, and are provided in two stages vertically through a space through which the pallet 2 can pass, and both have a large number of shaft centers in the X direction (the transport direction is the Y direction). And a roller conveyor composed of rollers. The lift conveyor 6 has a conveyor body 61 whose axis is composed of a number of rollers in the X direction. The conveyor body 61 has the same height as the first external load conveyor 4 by an elevating mechanism (not shown). Alternatively, it is configured to be selectively movable to the same height as the external pallet return conveyor 5.

On the other hand, the second external unloading conveyor 7 is installed at a height and a direction corresponding to the second unloading conveyor 13 in the internal conveyor unit 1 of the elevator car 31, that is, the axis is Y. It is composed of a roller conveyor composed of a number of rollers in the direction (the conveying direction is the X direction).

[0027] Figure 6, the first shipper conveyor 12 and pallet return conveyor 14 inside the conveyor unit 1 of the elevator car 31, the first floor floor F ₁ and secondary floor F
₂ first external shipper conveyor 4 is installed in, the external pallet return conveyor 5 and the lift conveyor 6, shows the operation in the case of continuously conveying a plurality of baggage from a floor F ₁ upstairs floor F ₂ It is.

[0028] In the first FIG. 6 (A), the in the process of the n-th load W _n is unloaded from the second floor of the lift conveyor 6, the pallet 2 which has been laid under the load W _n
1 is left on the conveyor body 61 of the lift conveyor 6. Pallet 2 ₅ located on the outside pallet return conveyor 5 has been unloaded prior to said package W _n n
-It is laid under the first luggage (not shown).

Further, n + 1-th load W _{n + 1} is on the first shipper conveyor 12 in the cabin 31 of the elevator 3 through the pallet 2 ₂ are stacked, the elevator car 3
1 is in the process of being vertically transported to the second floor.
In this case, the pallet _{2 2} As shown in FIG. 2 described above, the lower projection 22A, 22C, the 22E, on the conveyor chain 121 of the first shipper conveyor 12, roller in the second shipper conveyor 13 131 and in a non-interfering state. Furthermore, in the process of (n + 2) -th load W _{n + 2} is loaded through the pallet 2 ₃ on the conveyor body 61 of the lift conveyor 6 one floor F _1, the conveyor body 61 at this time to an external pallet return conveyor 5 Waiting in the corresponding low position.

Next, in FIG. 6B, from the first conveyer 12 of the elevator car 31 arriving at the loading / unloading entrance of the _second floor F2, the load Wn _{+ 1} is transferred to the first outside of the _second floor F2. It is unloaded been pallet 2 every _two horizontal transfer on shippers conveyor 4, at the same time, an empty pallet 2 ₅ is carried from outside the pallet return conveyor 5 onto the pallet return conveyor 14 in the cabin 31 (space 14S). As described above, load W _{n + 1} of the pallet 2 ₂ which is laid down conveyor chain 1 of the first shipper conveyor 12 in a non-interfering state, the second shipper conveyor 13
Since the first conveyor 21 is supported on the first conveyor 21, the operation of transporting the first conveyor 12 to the first outer conveyor 4 is smoothly performed.

On the other hand, the lift conveyor 6 on the _first floor F1
Then, the lift main body 61 on which the load Wn _{+ 2} is loaded rises to a high position corresponding to the first external unloading conveyor 4,
This, luggage _{W n + 2} is pushed along with the palette _{2 3.}

Next, in FIG. 6C, the second floor F
₂Left on the conveyor body 61 of the lift conveyor 6
Pallet 2₁But pallet 2₅Into the elevator car 31
External pallet return conveyor emptied by sending
5 is transferred horizontally. At this point, lift conveyor
6 is the external pallet return conveyor
Luggage W_{n + 1}Is the first
It is waiting on the external conveyer 4. Pallet return
Pallet 2 on the conveyor 14 (space 14S) ₅Receiving
The lift basket 31 taken is the first floor F₁Descend toward
Start. On the other hand, the first floor F₁Then lift conveyor 6
Luggage W pushed up by the rise of_{n +2}But the palette
To 2₃And the first external shipment from this lift conveyor 6
Is conveyed horizontally to the conveyor 4.

Next, in FIG. 6D, the second floor F
₂Conveyor body 61 of the lift conveyor 6 of the first outside
Rises to a high position corresponding to the conveyer 4 and
Luggage W waiting on the external unloading conveyor 4_{n + 1}
But pallet 2₂With the conveyor of this lift conveyor 6
A is horizontally transferred onto the main body 61. On the other hand, the first floor F ₁
Then, luggage W_{n + 2}To the first external unloading conveyor 4
Lift body 61 of lift conveyor 6 that has been emptied
To the low position corresponding to the external pallet return conveyor 5
And is waiting on this external pallet return conveyor 5.
Empty pallet 2₄Is horizontally transferred to the conveyor body 61
Is done. The luggage W_{n + 2}First received
The partial conveyor 4 has an elevator car 31 of the elevator 3 on the first floor.
Floor F ₁Waiting until it arrives at the loading / unloading entrance.

Next, in FIG. 6 (E), the conveyor body 61 of the lift conveyor 6 on the _second floor F2 is lowered to a low position corresponding to the external pallet return conveyor 5, and the pallet 2 _{2 is} placed on the conveyor body 61. Leave luggage W _{n + 1}
Is unloaded.

On the other hand, the first external shipper conveyor 4 one floor F _1, on the first shipper conveyor 12 in the cabin 31 that arrived at unloading port one floor F _1, first external shipper luggage W _{n + 2} on the conveyor 4, is carried is the pallet 2 ₃ every horizontal transfer, simultaneously, cabin 3
The pallets ₂₅ on the pallet return conveyor 14 in 1
It is carried out to the external pallet return conveyor 5. Wherein in the first shipper process from external shipper conveyor 4 to the first shipper conveyor 12, the pallet 2 ₃ laid under the load W _{n + 2,} as shown in FIG. 2, the lower protrusions 22A, 22
C, groove-shaped space 137A of the second shipper conveyor 13 22E respectively, 137C, are supported on the conveyor chain 121 of the first shipper conveyor 12 through 137E, plate-shaped body 21 of the pallet _{2 3} the second shipper Since it does not interfere with the conveyor 13, the above-mentioned loading operation is performed smoothly. The pallet 24 on the conveyor body 61 of the lift conveyor 6 at the low position corresponding to the external pallet return conveyor 5 has the next (n + 3) th luggage W
_{n + 3} are loaded.

[0036] That is, by the operation of the above-described FIG. 6 (A) ~ (E) is continuously repeated, a large number of baggage are sequentially conveyed from a floor F ₁ upstairs floor F _2, loading the cargo a plurality of pallets ₂ 1 to 2 ₅ to are recycled.

FIG. 6 described above shows one example of the first conveyer 12 and the pallet return conveyer 14 in the internal conveyer unit 1 of the elevator car 31 and the first external conveyer 4, the external pallet return conveyer 5 and the lift conveyer 6. Although only transport operation toward the floor the floor F ₁ upstairs floor F ₂ are shown, in parallel with this conveying operation, the other loads in the opposite direction (from the two floor F ₂ to the first floor floor F ₁ ) Can be transported.

For example, in FIG. 6 (B), the elevator car 31 emptied by unloading the cargo Wn _{+ 1} to the first external unloading conveyor 4 on the second floor has a second exterior installed on the _second floor F2. As shown in FIG. 7, another luggage W ′ can be carried in by the unloading conveyor 7. At this time, the luggage W ′ is transferred from the second external unloading conveyor 7 onto the second unloading conveyor 13 in the elevator car 31. Since the conveyor chain 121 is below the conveying surface of the second unloading conveyor 13 by the rollers 131, the load W 'is
It does not interfere with the operation, and the cargo is smoothly fed.

After the load W 'is loaded on the second conveyer conveyor 13 at the time of FIG. 6B, the elevator car 31 descends to the first floor. Then, as shown in FIG.
When the vehicle arrives at the first floor and stops, the rollers 131 of the second conveyer 13 are driven to rotate in the unloading direction, and the load W 'is transferred onto the second external conveyer 7 installed on the _first floor F1. Send out. The luggage W ′ does not interfere with the first unloading conveyor 12 as in the previous loading,
It is smoothly fed onto the second external unloading conveyor 7. In this case, load W _{n + 2} of the loading from the first external shipper conveyor 4 one floor F ₁ shown in FIG. 6 (E) to the first shipper conveyor 12 above the elevator car 31, the second shipper described above This is performed after the carry-out of the load W ′ from the conveyor 13 to the second external unloading conveyor 7.

According to the above-described operation, FIGS.
By operation of repeated continuously, in the forward path from a floor F ₁ upstairs floor F _2, cabin 31
Sequentially transports the packages W _n , W _{n + 1} ,..., And sequentially transports the other packages W ′ together with the return of the pallets 2 on the return trip from the second floor F ₂ to the first floor F ₁ . Also, by reversing the operation of each conveyor, the second floor F
Luggage _W n in the forward path from the ₂ to the first floor floor _{F 1,}
W n _{+ 1,} · · · · are sequentially conveyed and successively conveyed to other luggage W 'with return of the pallet 2 in the return path from a floor F ₁ upstairs floor F _2.

As shown in FIG. 7, between the second loading conveyor 13 and the second external loading conveyor 7 in the internal conveyor unit 1 in the elevator car 31, the load W 'is transferred without using a pallet. Conveyed.

In the above embodiment, the first loading conveyor 12 and the pallet returning conveyor 14 in the elevator car 31
And a pallet return conveyor 5 and a lift conveyor 6 for vertically connecting the transport path between them.
Instead of this, an external conveyer 8 having the functions of the first external unloading conveyer 4, the external pallet returning conveyer 5, and the lift conveyer 6 as shown in FIG. 8 can also be used.

That is, the external conveyor 8 shown in FIG. 8 has two rows of four rotating disks 81 which are respectively rotated around a horizontal main shaft 82 and arranged in a substantially horizontal direction and in a direction orthogonal to the main shaft 82. (Only one rotary table row is shown in the figure). Two rollers 83 are provided at 180 ° circumferentially symmetric positions of the rotary discs 81, respectively.
a, 83b and 83c, 83d are arranged adjacent to each other on the same circumference, and each of the rollers 83a to 83d is rotatably provided around an axis perpendicular (substantially horizontal) to the surface of the rotary plate 81. ing. The rotating disks 81 are synchronously rotated so that the rollers 83a to 83d provided on the respective rotating disks 81 have the same phase.

Each roller 83a, 83b of the external conveyor 8
The distance h between the rollers 83c and 83d, which are located at 180 ° symmetrical positions in the circumferential direction of the turntable 81, is determined by the transfer path and the pallet of the first loading conveyor 12 in the internal conveyor unit 1 in the elevator car 31. Return conveyor 1
4 substantially corresponds to the height difference of the transport path. In addition, the external conveyors 8 are installed with their rotating table rows facing the loading / unloading entrance of each floor of the elevator 3.

On the other hand, the pallet 2 used corresponding to the external conveyor 8 has a lower surface corresponding to the groove-shaped spaces 137A to 137E of the second loading conveyor 13 in the internal conveyor unit 1 in the elevator car 31, respectively. In addition to the ridges 22A to 22E formed, the external conveyor 8
Each of the rollers 83a to 83d is provided at both edges (only one edge is shown in FIG. 8) supported on the rollers 83a and 83b or 83c and 83d of the rotary disc 81 in the horizontal direction. Four notches 24 having a size that allows passage are formed at intervals corresponding to the arrangement intervals of the respective rotating disks 81 of the rotating disk array.

The operation of the external conveyor 8 is shown in FIG.
To explain according to (A) to (D), first, in FIG.
3a and 83b are located at the lowest position on the circumferential orbit centered on the main shaft 82 of the turntable 81, and rollers 83c and 83d symmetrical with this are positioned at the uppermost position on the circumferential orbit. And the edge of the pallet 2 is moved to the lower rollers 83a and 83
b. The supply of the pallet 2 is performed by rotating the rollers 83a and 83b around their axes. The pallet 2 has a notch 2 at an edge which moves upward by an operation described later.
4 is positioned in advance so that the trajectory 4 overlaps the middle position of the circumferential trajectory of the rollers 83a to 83d.

From this state, as shown in FIG.
When each turntable 81 starts synchronous rotation in the direction of the arrow in the figure,
Along with this, the rollers 83a to 83d
Rotate along a circumference around the main shaft 82 of the. In this case, the rollers 83a and 83b on the lower side
The pallet 2a is rotated upward in advance.
Is lifted by the roller 83a.

On the other hand, rollers 83c and 83d located on the upper side
As the roller 83c rotates downward in advance with the rotation of the turntable 81, the roller 83c moves closer to the edge moved upward by the roller 83a, and as shown in FIG. , Sequentially pass downward. For this reason, the edge of the pallet 2 has a roller 83c,
Without interfering with 83d, as shown in FIG.
By rotating the rotary plate 81 by 180 ° until the rollers 83a and 83b are at the uppermost position on the circumferential track, the rotary plate 81 is moved upward by an amount corresponding to the height h.

The pallet 2 raised to the position shown in FIG. 8D is horizontally moved by the rotation of the rollers 83a and 83b around their axes.
, While the rollers 83c and 83d, which have moved downward, rotate around their axis, a new pallet (not shown) is newly placed on the rollers 83c and 83d. Supplied to At this time,
Since the edge of the pallet 2 to be fed is supported by both the rollers 83a and 83b adjacent to each other, even if the notch 24 reaches the upper part of one of the rollers 83a and 83b in the process of horizontal movement, The edge is supported by the other roller, and the pallet 2 does not fall. This is because the lower rollers 83c and 83d
The same applies to horizontal movement when a new pallet is supplied upward.

It should be noted that the state shown in FIG.
When the pallet 2 is lowered to the state shown in FIG. 7A, the operation reverse to the above (reverse rotation of the rotating disk 81) is performed.
, The rotating direction of the rotating disk 81 can always be made the same.

[0051] Hereinafter, by using the external conveyor 8 described above as loading and unloading means luggage to elevator 3, for example, operation in the case of continuously conveying a plurality of load W from a floor F ₁ upstairs floor F ₂ Will be described with reference to FIG.

First, in FIG. 9A, the n-th package
W_nIs the first loading conveyer in the elevator car 31 of the elevator 3.
Pallet 2 on the bear 12₁Is loaded via
Descending car 31 is on the second floor F₂Arrived at the loading / unloading entrance
You. At this time, the second floor F ₂Each time of the external conveyor 8
Of the rollers 83a to 83d provided on the rolling plate 81,
Empty rollers 83a and 83b
To 2₃Is supported. This palette 2₃Is n
Th luggage W_nThe (n-1) th unloaded prior to
It was laid under luggage (not shown).
The n-th luggage W_nNext l + 1 luggage W
_{n + 1}But the first floor F₁Each on the external conveyor 8
The rollers 83a and 83b located below the turntable 81 are supported.
Pallet 2 held₂In the process of loading.

Next, in FIG. 9B, the elevator car 31
From the first shipper conveyor 12, load W _n is the roller 83c located on the upper side of each rotary disc 81 of the secondary floor F ₂ external conveyor 8, is unloaded is horizontally transported by the pallet 21 on the 83d, at the same time , Empty pallets 2 ₃
Is horizontally loaded onto the lower pallet return conveyor 14 (space 14S) in the elevator car 31 from above the rollers 83a, 83b located on the lower side of each rotary plate 81 of the external conveyor 8. Cabin received the empty pallet 2 ₃ 31 starts to descend toward the first floor unloading port of the floor F ₁ elevator 3.

Next, in FIG. 9 (C), the external conveyor 8 on the _second floor F2 is configured such that
0 to ° rotation, the operation shown in FIG. 8 mentioned above, the roller 83a, 83 b and the roller 83c, reversed the vertical positional relationship between 83d, luggage _{W n} it is moved downward by the pallet _{2 1.} On the other hand, similarly in the external conveyor 8 one floor F _1, the rotary disc 81 is synchronously rotated 180 °, whereby, luggage W _{n + 1} is moved upward by the pallet 2 _2.

Then, the elevator car 31 moves in the elevator 3
First floor F₁Arrives at the loading / unloading entrance of_{n + 1}
Pallet 2 loaded with₂Rollers 83a supporting the
83b is the first conveyer conveyor 12 in the elevator car 31.
And the rollers 83a and 83b
9 is rotated about its axis, so that FIG.
As shown in FIG._{n + 1}Is pallet 2₂Every
It is moved horizontally on the first conveyer 12 and
It is. At the same time, the second floor F₂Conveyed from
Empty pallet 2₃Is the pallet return box in the elevator car 31.
From above the conveyor 14 at the corresponding height.
Rollers 83c and 83d are horizontally transferred to the next n + 2
Luggage W_{n + 2}To be loaded. On the other hand, the second floor F
₂Luggage W on the external conveyor 8_nIs unloaded and
Luggage W_nPallet 2 loaded with ₁Is located below
Rollers 83c and 83d as described above.
Pallet 2 in FIGS. 9A and 9B₃like,
Second floor F₂Pallet return of elevator basket 31 arriving at
Collected on the conveyor 14 (space 14S).

In this way, the above-described FIGS.
By a series of operations (D) are repeated continuously, a large number of baggage are sequentially transported from a floor F ₁ upstairs floor F _2, pallet 2 ₁ to 2 ₃ for loading the cargo
But after the unloading of a two floor F _2, the first floor floor F ₁
It is returned to the order and reused. Further, and when transporting a load from a two-floor F ₂ to the first floor floor F _1, it is the same case of the transportation of cargo to and from other floors.

That is, the external conveyor 8 transfers the pallet 2
Rollers 83a, 83b as means for horizontal transfer and row
83c and 83d determine the positional relationship by rotating the turntable 81.
By alternately turning upside down by
The roller on the upper side is the external conveyor and the roller on the lower side is
Roller is an external pallet return conveyor, and the rotating plate 81 is a lift
It is what becomes. And use this external conveyor 8
As a result, the moving path of the pallet 2 is simplified, and FIG.
The first external unloading conveyor 4 and the external
Combination of let return conveyor 5 and lift conveyor 6
At least five pallets 2₁~ 2₅Must
It is important that three pallets 2 ₁~ 2₃Transport by
can do.

[0058] Figure 9 includes a first shipper conveyor 12 and pallet return conveyor 14 inside the conveyor unit 1 in the elevator cage 31, towards the first floor floor F ₁ by each floor of the outer conveyor 8 upstairs floor F ₂ Is shown only in this case, but also in this case, the second loading conveyor 13 in the internal conveyor unit 1 and the second external loading conveyor 7 shown in FIG. it can be a luggage transport from the two floor F ₂ to the first floor floor F _1.

[0059] For example, FIG. 9 (B) in the second floor of the roller 83c of the external conveyor 8, the cabin 31 emptied by unloading the luggage W _n on the 83d, the second installed upstairs floor F ₂ As shown in FIG. 7, another load W 'can be carried in by the external load conveyer 7. As described above, the first conveyer 12 having a different conveying direction is provided with the second conveyer 13
Since it is located on the lower side, the load W 'does not interfere with the first unloading conveyor 12 and smooth loading is performed.

After the load W 'is loaded on the second conveyer 13 at the time of FIG. 9B, the elevator car 31 descends to the first floor. Then, as shown in FIG. 9 (C), upon arriving at the first floor, the second loading conveyor 13 sends out the load W 'onto the second external loading conveyor 7 installed on the _first floor F1. The load W ′ is smoothly sent out onto the second external load conveyor 7 without interfering with the first load conveyor 12. In this case, the luggage W on the first conveyer 12 of the elevator car 31 from the external conveyor 4 on the _first floor F1 shown in FIG.
The loading of ( _{n + 1} ) is performed by the second loading conveyor 1 described above.
3 is carried out after the carry-out of the load W ′ to the second external unloading conveyor 7.

According to the above operation, FIGS. 9A to 9D
By operation of the continuously repeated, luggage _W n cabin 31 in the forward path from the first floor floor _{F 1} upstairs floor _{F 2 is, W n} + 1, sequentially conveys the · · · ·, _{F 1} upstairs floor F the return from ₂ to single floor F _1, can be sequentially conveying the other load W 'with the return of the pallet 2.
In addition, by reversing the operation of each conveyor, the luggage W _n , W _{n + 1} ,... Are sequentially transferred on the outward route from the second floor F ₂ to the first floor F ₁ , and the first floor F ₁
Other luggage W 'can be sequentially conveyed together with the return of the pallet 2 in the return path to the secondary floor F ₂ from.

[0062]

As is apparent from the above description, according to the elevator loading / unloading device according to the present invention, the transport surface of the first loading conveyor is lower than the transport surface of the second loading conveyor. The first cargo conveyor does not obstruct the transportation of the cargo when carrying the cargo into and out of the elevator car by the second cargo conveyor. And nevertheless, when loading and unloading cargo into and out of the elevator car by the first loading conveyor, by using the pallet according to the present invention, the second loading conveyor at a higher position than the first loading conveyor is used. There is no interference. Therefore, unlike the conventional case, there is no need for an elevating mechanism for raising or lowering the first conveyer than the second conveyer, and there is no time loss due to the elevating operation, so that the load can be smoothly fed. It can be carried out. In addition, the structure of the conveyor mechanism mounted on the elevator car is simplified and lightened.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a preferred embodiment of an elevator carry-in / out device and a pallet according to the present invention, partially cut away.

FIGS. 2A and 2B show the above embodiment, wherein FIG. 2A is a side view as viewed from a direction I in FIG. 1, and FIG.
1 is a vertical sectional view taken along the line II. FIG.
It is a vertical sectional view of a line position.

3A and 3B show the embodiment, wherein FIG. 3A is a vertical sectional view taken along the line IV-IV in FIG. 1, and FIG. 3B is a vertical sectional view taken along the line VV in FIG.

FIG. 4 is a perspective view of the pallet in the embodiment.

FIG. 5 is a perspective view schematically showing an entire transport system using an elevator using the carry-in / out device of the embodiment.

FIG. 6 is an explanatory diagram showing a luggage transfer operation by the transfer system.

FIG. 7 is an explanatory diagram showing a relationship between an upper roller conveyor and a second external unloading conveyor in the embodiment.

FIG. 8 is an explanatory diagram showing a schematic configuration and an operation of an external conveyor as a means for forming a continuous conveyance path with the chain conveyor and the lower roller conveyor in the embodiment.

FIG. 9 is an explanatory diagram showing a cargo transport operation by the transport system using the external conveyor.

FIG. 10 is a schematic plan view showing a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lifting-in / out apparatus 12 First load conveyor 121 Conveyor chain 13 Second load conveyor 137A to 137E Grooved space 14 Pallet return conveyor 14S space 2 Pallets 22A to 22E Lower ridge 3 Elevator 31 Lifting basket 4 First External conveyer 5 External pallet return conveyer 6 Lift conveyer 7 Second external conveyer 8 External conveyer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E063 AA03 CA06 3F016 AA01 3F044 AA01 AA11 CA01 CA05 CD01 CD08

Claims (4)

[Claims] 1. An internal conveyor unit installed in an elevator car of an elevator, comprising a first and a second transport conveyor in which the transport directions of the load intersect with each other, wherein the first transport conveyor includes the second transport conveyor. The transporting conveyor has a plurality of parallel transport surfaces extending in correspondence with the plurality of grooved spaces formed in a direction intersecting the transport direction thereof, and the transport surface is higher than the transport surface of the second transport conveyor. A loading / unloading device for an elevator, which is located on a lower side. 2. The pallet return conveyor according to claim 1, wherein a pallet return conveyor whose transport direction is opposite to that of the first pallet conveyor is disposed below a first pallet conveyor through a predetermined space capable of accommodating a pallet. An external loading conveyor that can form a transport path that is continuous with the first loading conveyor, and a transport path that is below the external loading conveyor and that is continuous with the pallet return conveyor. An external pallet return conveyor capable of forming a pallet, and a lift conveyor for receiving and transferring pallets between the external pallet conveyor and the external pallet return conveyor and moving the pallet up and down. 3. The conveyor according to claim 1, wherein the second conveyer includes a number of rollers rotated around an axis perpendicular to the conveying direction, and a sprocket provided coaxially with each of the rollers. A roller conveyor having a drive endless chain that meshes with each of these sprockets from below is provided.The first loading conveyor has a groove-shaped space above the drive endless chain and between the rollers and the drive endless chain. A lift-in / out device for an elevator, comprising a chain conveyor extending through a lower side. 4. A pallet used in the elevator carrying-in / out device according to claim 1, wherein the elevator is a plate-shaped body and a direction parallel to a lower surface of the plate-shaped body. And a plurality of lower ridges protruded corresponding to each groove-shaped space of the second loading conveyor in the loading / unloading device, wherein the lower ridge is formed from above the second loading conveyor. A pallet having a height reaching the first conveyer through a space, wherein the plate-shaped main body is supported in a non-contact state with the second conveyer via the protrusion.