JP7197345B2 - Mechanical parking device and its control method - Google Patents

Description

The present invention relates to a mechanical parking device with a lift and its control method.

A "lift" is a lifting device that raises and lowers a pallet on which a vehicle is placed between an entry/exit level and a storage level. BACKGROUND ART For example, a plane reciprocating system, a plane circulation system, and the like are known as a mechanical parking system that has a lift and operates by placing a vehicle on a pallet.

A conventional planar reciprocating type and planar circulation type mechanical parking system has a berth at the entry/exit level. A "berth" is an entry/exit space provided on an entry/exit level separate from a lift, and has a vehicle entry/exit position within the berth, where people get on and off.

For example, a conventional mechanical parking system with a berth is preferably applied to an underground parking system, and includes storage racks installed in multiple layers in an underground space, a mobile trolley that moves horizontally along the storage racks, and a and a lift that ascends and descends between and underground.
At the time of warehousing, the vehicle is stored on the pallet in the berth, the pallet on which the vehicle is placed (hereinafter referred to as the actual vehicle pallet) is transferred to the lift, and the actual vehicle pallet is lowered to the underground space by the lift. Next, in the underground space, the actual vehicle pallet is transferred onto the movable truck, the movable truck horizontally moves to a position adjacent to the empty storage shelf, and the actual vehicle pallet is horizontally moved and stored in the storage shelf. In addition, the actual vehicle pallet on which the vehicle is placed is moved to the ground by the reverse operation, and the vehicle is unloaded from the berth.
Such a berth-equipped mechanical parking device is disclosed in Patent Document 1, for example.

Japanese Unexamined Patent Application Publication No. 2014-109100 JP 2008-95324 A

However, conventional mechanical parking systems with berths (plane reciprocating system and plane circulation system) require berths on the entry/exit level in addition to the lifts. Convenience decreases.

On the other hand, as a mechanical parking system in which a vehicle (automobile) can directly enter onto a lift without a berth, for example, Patent Document 2 discloses a horizontal circulation parking system.
In Patent Document 2, on one side of the outer side of the hoistway in the short side direction, two front and rear pillars are erected in the long side direction of the hoistway. The endless chain is run vertically, and the lift is lifted while being guided by guide rollers.

However, since the lift with this structure is cantilevered by the guide rollers on one side of the hoistway in the short side direction, the guide rollers exert a large load on the pillars, and this load causes a large amount of noise when the lift is ascending and descending. .
Therefore, in order to apply the mechanical parking system (planar reciprocating system and planar circulation system) with a large number of accommodation units compared to the horizontal circulation type parking system with a small number of accommodation units, it is necessary to slow the lifting speed of the lift.

On the other hand, in mechanical parking systems (planar reciprocating system and planar circulation system) that accommodate a large number of vehicles, lifts are suspended by four string members (wire ropes, chains, etc.) outside the four corners of the hoistway to ascend and descend. , the lifting speed of the lift can be increased.
However, the lift with this configuration needs to be provided with a driving device for lifting and lowering the string member on both sides of the hoistway in the longitudinal direction, and the upper part of the lift where the driving device is installed protrudes above the loading/unloading level. , vehicles could not drive directly onto the lift without a berth.

Also, if you omit the berth for a mechanical parking device that accommodates a large number of vehicles, in the case of parking, in order for the next vehicle to enter after the preceding vehicle has entered the lift at the entry/exit level, after the preceding vehicle has been stored, Empty pallets must be transported from storage racks to the loading/unloading level. As a result, the waiting time becomes long in the case of continuous warehousing.
Similarly, in the case of continuous delivery, it is necessary to store the empty pallet after the delivery of the preceding vehicle from the loading/unloading level to the storage shelf, and then transport the next actual vehicle pallet from the storage shelf to the loading/unloading level. As a result, the waiting time becomes long even in the case of consecutive deliveries.

SUMMARY OF THE INVENTION The present invention has been devised to solve the above problems. That is, the first object of the present invention is to provide a mechanical parking device that allows a vehicle (automobile) to directly enter onto a lift without a berth, and that generates less noise when ascending and descending at high speed, and a method of controlling the same. .
A second object of the present invention is to provide a mechanical parking device and a method of controlling the same that can shorten the waiting time in continuous warehousing or continuous warehousing.

According to the present invention, a lift table capable of lifting and lowering a pallet on which a vehicle is placed along a hoistway;
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
The lift table is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed ;
The lifting drive device includes a pair of first fixed pedestals located below the entry/exit level and installed on both sides in the longitudinal direction of the hoistway;
four string member driving wheels provided on the first fixed frame, positioned at four corners of the hoistway, driven to rotate about a horizontal axis, and driving the string member up and down;
a synchronous drive device that synchronously drives the string member drive wheels to rotate;
The other end of the string member is fixed to the first fixed frame outside the string member driving wheel in the long side direction,
The lifting drive device is positioned between the other end and the string member drive wheel and suspended via a string member guide wheel that freely rotates about a horizontal axis. An apparatus is provided.

Further, according to the present invention, a lift table capable of lifting and lowering a pallet on which a vehicle is placed along a hoistway,
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
A control method for a mechanical parking device, wherein the lift platform is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed. There , at the time of continuous warehousing,
(A) placing the vehicle on the upper pallet at the loading/unloading level with the upper and lower pallets supported by the upper traversing drive device and the lower traversing drive device;
(B) lowering the lift platform to a lower stowage level so that the pallet with the vehicle on it traverses outside the lift platform;
(C) The lift table is raised to the loading/unloading level, and at the same time, the upper traverse drive device is retracted to the retracted position. A method of controlling a mechanical parking system is provided for raising a pallet to the level of said upper traverse drive and then returning said upper traverse drive to a supporting position.

Furthermore, according to the present invention, a lift platform capable of lifting and lowering a pallet on which a vehicle is placed along a hoistway,
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
A control method for a mechanical parking device, wherein the lift platform is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed. At the time of continuous delivery,
(A) With the pallet unsupported by the upper and lower traverse drives, the lift platform is lowered to a lower storage level and the pallet on which the vehicle rests is moved from the outside of the lift platform to the upper traverse drive. over the
(B) raising the lift platform to the loading/unloading level, and unloading the vehicle from the upper pallet at the loading/unloading level;
(C) re-lowering the lift platform to the lower stowage level, concurrently supporting an empty pallet by raising the pallet support platform, and then with the upper traverse drive retracted to the retracted position, the pallet; A method for controlling a mechanical parking system is provided for lowering the empty pallet supported on a support base to the level of the lower traverse drive and then returning the upper traverse drive to the support position.

According to the configuration of the present invention, the lift drive device has four string members that are lifted and lowered by hanging the four corners of the lift table, and the lift drive device that drives the four string members up and down in synchronization. , the noise generated during high-speed lifting is small.

In addition, the lifting drive device is installed below the entry/exit level, and the lift table is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and the lower part to which one end of the string member is fixed. It has a support frame. As a result, the upper part of the lift where the lifting drive device is installed does not protrude above the loading/unloading level, and a vehicle (automobile) can directly enter the lift (lift platform) without a berth.

1 is a schematic perspective view of a mechanical parking device according to the present invention; FIG. Fig. 3 is a side view of the lift; Fig. 3 is a plan view of the lift; It is a side view of a lift platform. It is a top view of a lift stand. FIG. 4 is a partial enlarged view of the upper traverse drive; FIG. 10 is an explanatory diagram showing a control method of the mechanical parking device at the time of continuous warehousing; FIG. 5 is an explanatory diagram showing a control method of the mechanical parking device during continuous parking;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In addition, the same code|symbol is attached|subjected to the part which is common in each figure, and the overlapping description is abbreviate|omitted.

FIG. 1 is a schematic perspective view of a mechanical parking system 100 according to the invention.

In this figure, the mechanical parking device 100 is such that the vehicle 1 directly rides on the lift table 10 of the warehousing lift 50A, the lift table 10 descends and stops at a predetermined storage level, and the vehicle 1 is transferred to the traveling carriage 4. A traveling carriage 4 travels horizontally and stops in front of a predetermined storage shelf 5, and the vehicle 1 is transferred and stored on the storage shelf 5. - 特許庁
Conversely, when leaving the warehouse, a predetermined vehicle 1 is transferred from the storage shelf 5 onto the traveling carriage 4, traveled horizontally, and the lift platform 10 of the delivery lift 50B rises to directly leave the vehicle from the lift platform 10.例文帳に追加.

In this example, the mechanical parking system 100 is of a planar reciprocating system, but may be a planar circulation mechanical parking system or any other mechanical parking system.
In addition, the inbound lift 50A and the outbound lift 50B may be one common unit. Hereinafter, the incoming lift 50A and the outgoing lift 50B will simply be referred to as the "lift 50" unless otherwise required.

FIG. 2 is a side view of the lift 50. FIG. In this figure, FL indicates the entry/exit level, and B1, B2, and B3 indicate the first, second, and third storage levels from the lowest end.
The storage levels B1, B2, and B3 are hereinafter simply referred to as "storage level B" unless otherwise required. The entry/exit level FL and the storage level B are travel heights on which the wheels of the vehicle 1 are placed.

In FIG. 2, the lift 50 comprises a lift table 10 and a lift drive device 20. As shown in FIG.
The lift table 10 is configured so that the pallet 2 on which the vehicle 1 is placed can be raised and lowered along the hoistway 3 . Details of this structure will be described later.

The lift driving device 20 drives the lift table 10 up and down between the loading/unloading level FL and the storage level B below the loading/unloading level. The entry/exit level FL is the height at which the vehicle 1 gets in, for example, the first floor of the building. The storage level B is provided with three stages (B1, B2, B3) in this example.

In FIG. 2 , the lift drive device 20 has four string members 21 and a lift drive device 22 .
The four string members 21 are, for example, chains or wire ropes, and suspend the four corners of the lift table 10 to move up and down.
The lifting drive device 22 is installed below the loading/unloading level FL, and synchronously drives the four string members 21 up and down.

In this figure, the lift platform 10 is positioned below the loading/unloading level FL when the vehicle 1 is positioned at the loading/unloading level FL, and has a lower support frame 12 to which one end 21a of the string member 21 is fixed.

In FIG. 2 , the lift drive device 22 has a pair of first fixed mounts 24A and four string member drive wheels 26 .

The pair of first fixed pedestals 24A are located below the loading/unloading level FL, and are installed on both sides of the hoistway 3 on the outside in the long side direction (outside of the short side). Hereinafter, the long side direction of the hoistway 3 and the pallet 2 is simply referred to as the "long side direction".
The pair of first fixed mounts 24A is preferably connected to each other outside the hoistway 3 by a connecting member (not shown).

The four string member drive wheels 26 are, for example, sprockets or pulleys, are provided on the upper portion of the first fixed frame 24A, are positioned at the four corners of the hoistway 3, and are driven to rotate about the horizontal axis to lift the string member 21 up and down. drive.

In FIG. 2, the other end 21b of the string member 21 is fixed to the upper portion of the first fixed base 24A outside the string member driving wheel 26 in the longitudinal direction.
The lift drive device 22 is positioned between the other end 21b of the string member 21 and the string member drive wheel 26, and is suspended via a string member guide wheel 27 that freely rotates about a horizontal axis. have
With this configuration, the weight of the lift table 10 can be balanced by the counterweight 28, and the required driving force of the string member drive wheels 26 can be reduced.
Alternatively, the string member guide ring 27 may be omitted and the counter weight 28 may be directly fixed to the other end 21b of the string member 21 .

FIG. 3 is a plan view of the lift 50. FIG.
In this figure, the lift drive device 22 further has a synchronous drive device 30 that synchronously drives the four string member drive wheels 26 (sprockets or pulleys) to rotate.

In this example, the synchronous drive device 30 includes a single second fixed frame 24B standing outside along one of the long sides of the hoistway 3, an electric motor 31, a reduction gear 32, a brake 33, and a pair of It has a first drive shaft 34 , a pair of turning gears 35 and a pair of second drive shafts 36 .
Note that the first fixed base 24A and the second fixed base 24B may be connected.

Two string member drive wheels 26 (sprockets or pulleys) provided on the pair of first fixed mounts 24A are coaxially fixed to two second drive shafts 36, respectively. The second drive shafts 36 are rotatable around the horizontal axis in the short side direction of the hoistway 3 by bearings fixed to the first fixed bases 24A. Hereinafter, the short-side direction of the hoistway 3 and the pallet 2 is simply referred to as "short-side direction".

The electric motor 31 synchronously rotates two first drive shafts 34 extending horizontally in the long side direction of the hoistway 3 via a speed reducer 32 . The brake 33 brakes the rotation of the first drive shaft 34 via the speed reducer 32 .
The two direction changing gears 35 connect the first drive shaft 34 and the second drive shaft 36 via gears, respectively, and synchronize the rotation of the pair of first drive shafts 34 with the pair of second drive shafts 36. to communicate.
With this configuration, the four string member driving wheels 26 can be synchronously driven to rotate.

In FIG. 3 , the lift 50 has four guide rails 38 .
Four guide rails 38 are provided at the four corners of the hoistway 3 and extend vertically from the upper end near the loading/unloading level FL to below the storage level B at the lowest end to guide the lifting of the lift table 10 (indicated by thin lines). do.
The guide rail 38 is, for example, a vertically extending shaped steel (for example, H-shaped steel).

In FIG. 3, lift platform 10 has guide rollers 11 provided at the four corners of lower support frame 12 and engaging guide rails 38 .
With this configuration, the engagement between the guide rollers 11 and the guide rails 38 allows the lift table 10 to be positioned in the central portion of the hoistway 3 in plan view so as to be able to move up and down.

FIG. 4 is a side view of the lift platform 10. FIG.
In this view, the lift platform 10 also has a pair of upper support frames 14 and an upper traverse drive 40A.
A pair of upper support frames 14 are installed on both sides of the lower support frame 12 in the longitudinal direction, and are positioned below the entry/exit level FL when the vehicle 1 is positioned at the entry/exit level FL.

FIG. 5 is a plan view of the lift platform 10. FIG.
4 and 5, the upper traverse drives 40A are mounted on the upper support frame 14, respectively.
The upper traverse driving device 40A also has a plurality of drive rollers 42 that support both ends of the pallet 2 located at the loading/unloading level FL in the long side direction and horizontally move the pallet 2 in the short side direction.

FIG. 6 is a partially enlarged view of the upper traverse drive device 40A. In this figure, (A) is a partially enlarged view of the upper traversing drive device 40A on the right side of FIG. 5, and (B) is a BB arrow view of (A).

In FIG. 6, a pair of upper transverse frames 16 are provided on the upper support frame 14 and extend horizontally in the short side direction of the hoistway 3 . Central shafts 42a of a plurality of (five in this figure) driving rollers 42 are attached to the upper traversing frame 16 so as to be rotatable around the shaft center.
A plurality of sprockets 43 are fixed to the central shafts 42a of the plurality of drive rollers 42, respectively, and a chain 44 meshing with the sprockets 43 rotates the plurality of drive rollers 42 in synchronization.
Further, a roller drive motor 45 that drives one of the sprockets 43 to rotate is provided.
With this configuration, a plurality of drive rollers 42 can be synchronously driven to rotate.

According to the above-described embodiment of the present invention, the lift driving device 20 includes the four string members 21 that suspend the four corners of the lift table 10 and ascend and descend, and the four string members 21 that are synchronously driven up and down. Since it has the driving device 22, the noise generated during high-speed lifting is small.

Further, the lifting drive device 22 is installed below the entry/exit level FL, and the lift table 10 is positioned below the entry/exit level FL when the vehicle 1 is positioned at the entry/exit level FL, and the string member 21 is positioned below the entry/exit level FL. has a lower support frame 12 to which one end 1a of the is fixed. As a result, the vehicle 1 (automobile) can directly drive onto the lift (on the lift table 10) without a berth without the upper part of the lift on which the lifting drive device 22 is installed protruding above the loading/unloading level FL. can.

In FIG. 4, the lift platform 10 also has a lower traverse drive 40B.
The lower transverse driving device 40B is positioned below the upper transverse driving device 40A and has a plurality of drive rollers 42 that support both ends of the pallet 2 in the long side direction and horizontally move the pallet 2 in the short side direction.
The structure of the lower traverse drive 40B is similar to that of the upper traverse drive 40A.

The difference in height between the upper traversing drive device 40A and the lower traversing drive device 40B is small, and the lower traversing drive device 40B can horizontally move while supporting the empty pallet 2a on which the vehicle 1 is not placed. The actual vehicle pallet 2b) is set so as not to move horizontally.
On the other hand, the upper traversing drive device 40A can horizontally move both the empty pallet 2a and the actual vehicle pallet 2b.

4 and 5, the lift platform 10 further comprises a slide drive 46 and a pallet lifting device 48. As shown in FIG.

In FIG. 6, the slide drive device 46 has a linear guide 46a and a slide motor 46b, and moves the upper traverse drive device 40A between the support position of the pallet 2 and the retracted position outside both ends of the pallet 2 in the long side direction. It is designed to move horizontally.
At the retracted position, the pallet 2 can be raised and lowered between them without interfering with the upper traverse drive device 40A.

In FIG. 4, the pallet lifting device 48 includes a pallet support base 48a, four ball screws 48b, and four ball nuts 48c.
The pallet support base 48a supports the empty pallet 2a. The four ball screws 48b are rotatably fixed at their upper ends to the pallet support base 48a and extend vertically downward. The four ball nuts 48c are screwed together with the ball screws 48b and synchronously driven to rotate by a driving device (not shown).

The pallet lifting device 48 is installed in the center of the lower support frame 12, and raises and lowers the pallet support base 48a while maintaining the horizontality of the pallet support base 48a via the ball screws 48b by the synchronous rotation of four ball nuts 48c. .
With this configuration, the empty pallet 2a is moved up and down between the height supported by the lower traverse drive device 40B and the height supported by the upper traverse drive device 40A while the upper traverse drive device 40A is retracted to the retracted position. be able to.

The pallet 2 can be raised or lowered between the support position by the upper traverse drive device 40A and the support position by the lower traverse drive device 40B by the slide drive device 46 and the pallet lifting device 48 described above.
Details of this method will be described later.

FIG. 7 is an explanatory diagram showing a control method of the mechanical parking device 100 during continuous parking.
In the method of the present invention, the following (1), (2), and (3) are executed in order during continuous warehousing.

(1) First, the vehicle 1 is parked on the upper pallet at the loading/unloading level FL while the upper and lower pallets 2 are respectively supported by the upper traverse drive device 40A and the lower traverse drive device 40B. The lower pallet 2 is an empty pallet 2a.
(2) Next, the lift table 10 is lowered to the lower storage level B (B1 in this example), and the pallet 2 on which the vehicle 1 is placed is moved outside the lift table 10 (for example, above the traveling carriage 4).
(3) Next, the lift table 10 is raised to the loading/unloading level FL. In parallel with this upward movement, the pallet support base 48a is lifted while the upper traversing drive device 40A is retracted to the retracted position. Raise to level and then return upper traverse drive 40A to support position.
The elevation level of the upper traverse drive 40A is preferably slightly above the level of support of the pallet 2 by the upper traverse drive 40A. Further, after the upper traversing drive device 40A returns to the supporting position, the pallet support base 48a is lowered to the lowered position.
By returning the upper traversing drive device 40A to the supporting position, the vehicle 1 can be stored again on the upper pallet at the loading/unloading level FL.

After the vehicle 1 is transferred to the traveling truck 4 by the method described above, the vehicle 1 is transferred to the storage shelf 5, and the waiting time until the traveling truck 4 conveys the empty pallet 2a and returns to the lift 50 is substantially It is possible to improve the smoothness at the time of continuous warehousing.
After the lift table 10 runs out of empty pallets 2a, it is necessary to replenish the empty pallets 2a before the next warehousing. However, since the empty pallet 2a can be transported to the lift 50 at the unused storage level B (for example, B2, B3) between two warehousing, the waiting time in this case can be greatly shortened.

FIG. 8 is an explanatory diagram showing a control method of the mechanical parking device 100 during continuous parking.
In the method of the present invention, the following (1), (2), and (3) are executed in order during consecutive deliveries.

(1) First, in a state where the lift table 10 does not support the pallet 2, the lift table 10 is lowered to the lower storage level B (B1 in this example), and the pallet 2 on which the vehicle 1 is placed is moved to the outside of the lift table 10 ( For example, it is made to traverse from above the traveling carriage 4) onto the upper traversing drive device 40A.
(2) Next, the lift table 10 is raised to the loading/unloading level FL, and the vehicle 1 is loaded from the upper pallet 2 at the loading/unloading level FL. At this time, the empty pallet 2a remains in the upper traversing drive device 40A.
(3) Next, the lift table 10 is lowered again to the storage level B below. In parallel with this re-lowering, the empty pallet 2a is supported by raising the pallet support base 48a, and then the empty pallet 2a supported by the pallet support base 48a is lifted while the upper traversing drive device 40A is retracted to the retracted position. It is lowered to the level of the lower traversing drive device 40B, and the empty pallet 2a is supported by the lower traversing drive device 40B. The upper traversing drive 40A is then returned to the support position, and the pallet support base 48a is lowered to the lowered position.
By returning the upper traversing drive device 40A to the support position, the upper traversing drive device 40A is in a state not supporting the pallet 2, and the pallet 2 on which the vehicle 1 is placed is driven from the outside of the lift table 10 (for example, the traveling carriage 4). It can be traversed again over device 40A.

After the vehicle 1 is discharged from the upper pallet 2 at the loading/unloading level FL by the method described above, the empty pallet 2a remaining on the upper traversing drive device 40A is stored in the storage shelf 5 via the traveling carriage 4, and other storage is performed. The waiting time until the traveling carriage 4 conveys the full pallet 2b from the shelf 5 and returns it to the lift 50 is substantially eliminated, and the smoothness at the time of continuous unloading can be improved.
If there are empty pallets 2a above and below the lift table 10, it is necessary to transfer the empty pallets 2a to the storage shelf 5 before the next delivery. However, since the empty pallets 2a above and below the lift platform 10 can be transported in parallel to the storage shelf 5 at the storage level B (for example, B2, B3) that are not in use between the two vehicles leaving the warehouse, in this case waiting time can be greatly reduced.

It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

B, B1, B2, B3 storage level, FL entry/exit level,
1 vehicle, 2 pallet, 2a empty pallet, 2b actual vehicle pallet,
3 hoistway, 4 traveling cart, 5 storage shelf, 10 lift table,
11 guide rollers, 12 lower support frame, 14 upper support frame,
20 lift drive, 21 string member (chain or wire rope),
21a one end, 21b the other end, 22 lifting drive device, 24A first fixed base,
24B second fixed base, 26 string member driving wheel (sprocket or pulley),
30 synchronous drive device, 31 electric motor, 32 speed reducer, 33 brake,
34 first drive shaft, 35 direction changing gear, 36 second drive shaft,
40A upper traverse drive, 40B lower traverse drive, 42 drive roller,
42a central shaft, 43 sprocket, 44 chain, 45 roller drive motor,
46 slide drive device, 46a linear guide, 46b slide motor,
48 pallet lifting device, 48a pallet support, 48b ball screw,
48c ball nut, 50 lift, 50A incoming lift, 50B outgoing lift,
100 mechanical parking device

Claims (6)

A lift table that can lift the pallet on which the vehicle is placed along the hoistway,
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
The lift table is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed;
The lifting drive device includes a pair of first fixed pedestals located below the entry/exit level and installed on both sides in the longitudinal direction of the hoistway;
four string member driving wheels provided on the first fixed frame, positioned at four corners of the hoistway, driven to rotate about a horizontal axis, and driving the string member up and down;
a synchronous drive device that synchronously drives the string member drive wheels to rotate;
The other end of the string member is fixed to the first fixed frame outside the string member driving wheel in the long side direction,
The lifting drive device is positioned between the other end and the string member drive wheel and suspended via a string member guide wheel that freely rotates about a horizontal axis. Device. 2. According to claim 1, comprising four guide rails provided at four corners of said hoistway and extending vertically from an upper end near said loading/unloading level to below said storage level at the lowest end to guide the lifting of said lift platform. A mechanical parking device as described. a pair of upper support frames installed on both sides of the lower support frame in the longitudinal direction, and positioned below the entry/exit level when the vehicle is positioned at the entry/exit level;
upper traverse drives respectively mounted on the upper support frames;
2. The upper traversing drive device according to claim 1, wherein the upper traversing drive device has a plurality of drive rollers that support both ends of the pallet located at the entry/exit level in the direction of the long side and move the pallet horizontally in the direction of the short side. mechanical parking device. a slide drive device for horizontally moving the upper traverse drive device between a supporting position of the pallet and a retracted position outside both ends of the pallet in the long side direction;
a lower traverse drive device positioned below the upper traverse drive device and having a plurality of drive rollers supporting both ends of the pallet in the long side direction and horizontally moving the pallet in the short side direction;
It is installed in the center part of the lower support frame, and the height supported by the lower traverse drive and the height supported by the upper traverse drive in a state in which the upper traverse drive is horizontally moved to the retracted position. and a pallet lifter for lifting said pallet therebetween. A lift table that can lift the pallet on which the vehicle is placed along the hoistway,
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
A control method for a mechanical parking device, wherein the lift platform is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed. There , at the time of continuous warehousing,
(A) placing the vehicle on the upper pallet at the loading/unloading level with the upper and lower pallets supported by the upper traversing drive device and the lower traversing drive device;
(B) lowering the lift platform to a lower stowage level so that the pallet with the vehicle on it traverses outside the lift platform;
(C) The lift table is raised to the loading/unloading level, and at the same time, the upper traverse drive device is retracted to the retracted position. A method of controlling a mechanical parking system in which a pallet is raised to the level of said upper traverse drive and then said upper traverse drive is returned to a supporting position. A lift table that can lift the pallet on which the vehicle is placed along the hoistway,
a lift driving device for driving the lift table up and down between an entry/exit level and a storage level below the entry/exit level;
The lift drive device includes four string members that suspend the four corners of the lift table and move up and down,
a lifting drive device that is installed below the entry/exit level and that synchronously drives the four string members up and down;
A control method for a mechanical parking device, wherein the lift platform is positioned below the entry/exit level when the vehicle is positioned at the entry/exit level, and has a lower support frame to which one end of the string member is fixed. At the time of continuous delivery,
(A) With the pallet unsupported by the upper and lower traverse drives, the lift platform is lowered to a lower storage level and the pallet on which the vehicle rests is moved from the outside of the lift platform to the upper traverse drive. over the
(B) raising the lift platform to the loading/unloading level, and unloading the vehicle from the upper pallet at the loading/unloading level;
(C) re-lowering the lift platform to the lower stowage level, concurrently supporting an empty pallet by raising the pallet support platform, and then with the upper traverse drive retracted to the retracted position, the pallet; A method of controlling a mechanical parking system comprising lowering the empty pallet supported on a support base to the level of the lower traverse drive and then returning the upper traverse drive to the supporting position.

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