WO2019146133A1

WO2019146133A1 - Underground car park and construction method thereof

Info

Publication number: WO2019146133A1
Application number: PCT/JP2018/013562
Authority: WO
Inventors: Akio Kitamura; Toshio Ikeda
Original assignee: Giken Ltd.
Priority date: 2018-01-26
Filing date: 2018-03-30
Publication date: 2019-08-01
Also published as: CN208563370U; JP2019127802A

Abstract

An underground car park (100) includes: a loading table (3); an elevating/lowering device (4) that elevates and lowers the loading table (3) between the ground and the underground in a center inside the outer shaft (1); a plurality of parking platforms (5) that are hierarchically provided around an elevating/lowering path (8) through which the loading table (3) is elevated or lowered by the elevating/lowering device (4) in the outer shaft (1); a conveyance device (6) that clamps and lifts wheels of a vehicle (C) supported by the loading table (3) or one of the plurality of parking platforms (5), and that conveys the vehicle (C) between the loading table (3) and the one of the plurality of parking platforms (5); and a booth (7) that is provided on the ground so as to cover the loading table (3) located on the ground.

Description

[Title established by the ISA under Rule 37.2] UNDERGROUND CAR PARK AND CONSTRUCTION METHOD THEREOF

Cross-Reference to Related Application

This application claims the benefit of priority of Japanese Patent Application No. 2018-011875, filed on January 26, 2018, the entire contents of which are incorporated herein by reference.

The present invention relates to an elevating/lowering and conveying type underground car park that utilizes an underground space, and a construction method thereof.

Car parks having a satisfactory parking efficiency are requested in an urban area with many vehicles. Therefore, gondola-type multistory car parks in which vehicles are housed in a booth (building) while being hoisted, underground car parks in which parking spaces of vehicles are hierarchized in the basement of a booth, and the like have been provided.

In an underground car park, an occupant gets out of a vehicle on the ground, and the vehicle with no person included is lowered and conveyed, and is moved to a parking platform that is formed under the ground. When the occupant gets in the vehicle, the vehicle is conveyed and elevated from the parking platform, and is moved to the ground (for example, JP 2787435 B2).

It is an object of the present invention to provide an underground car park that is capable of safely and rapidly elevating/lowering and conveying a vehicle between a getting-in/out position on the ground and a parking platform under the ground.

An underground car park in one aspect of the present invention includes: an outer shaft that is formed in a cylindrical shape from a ground to an underground; a loading table; an elevating/lowering device that elevates and lowers the loading table between the ground and the underground in a center inside the outer shaft; a plurality of parking platforms that are hierarchically provided around an elevating/lowering path through which the loading table is elevated and lowered by the elevating/lowering device in the outer shaft; a conveyance device that clamps and lifts wheels of a vehicle located on the loading table or one of the plurality of parking platforms, and that conveys the vehicle between the loading table and the one of the plurality of parking platforms; and a booth that is provided on the ground so as to cover at least the loading table located on the ground.

By employing this configuration, a vehicle is conveyed between the loading table elevated/lowered by the elevating/lowering device and a parking platform in a state in which the wheels of the vehicle are clamped and lifted, and this enables the vehicle to be safely and rapidly elevated/lowered and conveyed between a getting-in/out position on the ground and the parking platform under the ground.

The underground car park described above may further include a rotation device that rotates the loading table, and the booth may include an entrance and an exit. By employing this configuration, the loading table rotates, and this enables the entrance and the exit to be provided in arbitrary positions of the booth. The entrance may also serve as the exit.

In the underground car park described above, the outer shaft may be formed in a cylindrical shape by arranging a plurality of piles in a circular shape and installing the plurality of piles. The plurality of parking platforms may be radially provided around the elevating/lowering path. By employing this configuration, vehicles can be parked on a larger number of parking platforms without moving in parallel the loading table under a single booth.

In the underground car park described above, each of the plurality of piles may be a U-shaped steel sheet pile, a hat-shaped steel sheet pile, a Z-shaped steel sheet pile, H-shaped steel pile, a steel pipe sheet pile, a steel pipe pile, or a concrete pile. By employing this configuration, a pile can be pressed-in into the ground by using a normal press-in machine. The type of a pile can be selected according to the height of the outer shaft (the depth of the underground car park). The concrete pile may be a cast-in-place pile that is configured by forming a hole under the ground and pouring concrete into the hole.

In the underground car park described above, the outer shaft may be formed by filling a gap between adjacent ones of the plurality of piles with a filling material. By employing this configuration, the filling material stops water or retains earth, and water or earth outside the outer shaft can be prevented from leaking into the outer shaft.

The underground car park described above may further include a rotation device that rotates the loading table. The loading table may be circular, and the plurality of parking platforms may be radially provided around the elevating/lowering path. By employing this configuration, a vehicle can be parked on an arbitrary one of the plurality of parking platforms that are radially provided under the ground by rotating the circular loading table.

The underground car park described above may include, among the plurality of parking platforms, a controller that controls the elevating/lowering device, the conveyance device, and the rotation device. By employing this configuration, the controller can be deployed while effectively utilizing an unused space under the ground, and space can be secured on the ground.

The underground car park described above may further include locking means that fixes the loading table that is located on the ground in a current position. By employing this configuration, when the loading table is located on the ground, the loading table is maintained in a current position by the elevating/lowering device, and is also fixed to the current position by the locking means. Therefore, even when a failure has occurred and the elevating/lowering device fails to maintain the loading table in the current position, the loading table is maintained in the current position by the locking means, and safety is secured at the time of getting in/out of a vehicle.

In the underground car park described above, the conveyance device may include: a set of bars that is provided for each of the wheels of a vehicle supported by the loading table or one of the plurality of parking platforms, the set of bars abutting onto a lower half portion of a corresponding wheel from front and rear; and a bar driving device that drives the set of bars between a retreat position and a restriction position with one end of each of the set of bars as a rotation center, the retreat position being a position in which the vehicle is not hindered from entering and exiting from the loading table, the restriction position being a position in which the vehicle is restricted from entering and exiting from the loading table. By employing this configuration, a vehicle can be lifted in a state in which the set of bars clamps each of the wheels, and the set of bars can retreat when the vehicle enters and exits from the loading table.

In the underground car park described above, the bar driving device may include a bar rotationally moving device that rotationally moves the set of bars between the retreat position and the restriction position with one end of each of the set of bars as a rotation center. The retreat position may be a position in which the set of bars is parallel to a direction in which the vehicle enters the loading table and a direction in which the vehicle exits from the loading table. The restriction position may be a position in which the set of bars is perpendicular to the direction in which the vehicle enters the loading table and the direction in which the vehicle exits from the loading table. By employing this configuration, the set of bars can be rotationally moved so as to be driven between the retreat position and the restriction position.

In the underground car park described above, bars that are located in a deepest position in the direction in which the vehicle enters the loading table may be maintained in the restriction position, even when the vehicle enters the loading table. By employing this configuration, the bars that are located in the deepest position function as a positioning stopper when a vehicle enters the loading table.

In the underground car park described above, a supporting member may be provided at a distal end on a side of one of the plurality of parking platforms of the conveyance device, the supporting member preventing the conveyance device from hanging down. Each of the plurality of parking platforms may include a receiving rail that supports the supporting member from below when the conveyance device moves between the loading table and each of the plurality of parking platforms.

The underground car park described above may further include a sensor that detects the wheels of a vehicle being entering the loading table. The bar driving device may drive the set of bars in a direction in which the vehicle enters the loading table and a direction in which the vehicle exits from the loading table in accordance with the detection of the wheels of the sensor. By employing this configuration, front wheels and rear wheels can be reliably clamped using the sets of bars in accordance with the wheelbase of a vehicle.

The underground car park may further include a storage that stores an interval between the set of bars for a front wheel and the set of bars for a rear wheel at a time of entering of the vehicle in association with information that specifies the vehicle, an owner of the vehicle, or one of the plurality of parking platforms on which the vehicle will be parked. By employing this configuration, when a user gives his/her vehicle out of the car park by specifying his/her vehicle, the owner of the vehicle or the one of the plurality of parking platforms, the information stored in the storage is referred to, and front wheels and rear wheels can be reliably clamped using the sets of bars in accordance with the wheelbase of the vehicle without detecting the wheelbase again.

In the underground car park described above, at least a portion of the elevating/lowering device may be installed under the ground. By employing this configuration, a site area for installing the elevating/lowering device is not needed, and a site on the ground can be effectively utilized.

In the underground car park described above, at least a portion of the elevating/lowering device may be installed on the ground. By employing this configuration, at least a portion of the elevating/lowering device is installed on the ground. Therefore, a worker does not need to enter the underground in order to perform maintenance on the portion of the elevating/lowering device, and maintenance can be easily performed.

In the underground car park described above, at least a portion of the elevating/lowering device may be installed in an upper portion of the booth, and a roof of the booth may be removable. By employing this configuration, at least a portion of the elevating/lowering device is installed on the ground. Therefore, a worker does not need to enter the underground in order to perform maintenance on the portion of the elevating/lowering device, and maintenance can be performed on the portion of the elevating/lowering device by removing the roof. In addition, a site around the booth can be effectively utilized.

The underground car park described above may further include a controller. The booth may include an opening/closing device that opens or closes the booth, and a sensor that detects a person. The controller may control the opening/closing device to close the booth under a condition where it is determined using the sensor that there is no person in the booth at a time of entering, and may control the elevating/lowering device and the conveyance device in such a way that a vehicle enters one of the plurality of parking platforms in a state in which the booth is closed. By employing this configuration, a parking operation can be performed in a state in which there is no person in the booth.

The underground car park described above may further include: an authentication device that authenticates identification information that specifies a vehicle, an owner of the vehicle, or one of the plurality of parking platforms, the authentication device being located outside the booth; and a storage that stores the identification information authenticated by the authentication device in association with the one of the plurality of parking platforms. The controller may control the elevating/lowering device and the conveyance device in such a way that the vehicle enters the one of the parking platforms under a condition where the identification information has been authenticated by the authentication device at the time of entering. By employing this configuration, at the time of entering, a parking platform on which a vehicle will be parked and an identification information can be stored in association with each other.

In the underground car park described above, at the time of exiting, the controller may refer to the storage, may specify one of the plurality of parking platforms that corresponds to the identification information authenticated by the authentication device, and may control the elevating/lowering device and the conveyance device in such a way that a vehicle exits from the one of the plurality of parking platforms. This configuration enables the exiting of a vehicle that corresponds to the identification information.

In the underground car park described above, the authentication device may read the identification information from a storage medium that stores the identification information through short-range wireless communication, and may authenticate the identification information. By employing this configuration, a user can cause the authentication device to perform authentication by holding the storage medium over the authentication device.

The underground car park described above may further include: an abnormality detector that detects abnormality in the underground car park; and communication means that issues a report when the abnormality has been detected by the abnormality detector. By employing this configuration, a user can remotely know the occurrence of abnormality by receiving a report from the communication means.

One aspect of the present invention is an underground car park construction method. The underground car park construction method includes: an installation step of forming an outer shaft in a cylindrical shape from a ground to an underground by arranging a plurality of piles in the cylindrical shape and installing the plurality of piles into the ground; an excavation step of excavating an inside of the outer shaft formed in the installation step; an internal installation step of installing, in a space inside the outer shaft formed in the excavation step, a loading table, an elevating/lowering device that elevates and lowers the loading table between the ground and the underground in a center inside the outer shaft, a plurality of parking platforms that are hierarchically provided around an elevating/lowering path through which the loading table is elevated or lowered by the elevating/lowering device, and a conveyance device that clamps and lifts wheels of a vehicle supported by the loading table or one of the plurality of parking platforms, and that conveys the vehicle between the loading table and the one of the plurality of parking platforms; a covering step of covering, at a level identical to the ground, an upper opening of the outer shaft excluding a hole that corresponds to the elevating/lowering path; and an external installation step of installing, on the ground, a booth that covers at least the hole that corresponds to the elevating/lowering path, the hole being uncovered in the covering step.

By employing this configuration, an underground car park in which a plurality of vehicles is parked on a plurality of parking platforms under the ground can be completed.

According to the present invention, a vehicle is conveyed between a loading table elevated/lowered by an elevating/lowering device and a parking platform in a state in which the wheels of the vehicle are clamped and lifted, and this enables the vehicle to be safely and rapidly elevated/lowered and conveyed between a getting-in/out position on the ground and the parking platform under the ground.

Fig. 1 is a transparent perspective view of an underground car park according to an embodiment of the present invention. Fig. 2 is a sectional view in a front direction of the underground car park according to the embodiment of the present invention. Fig. 3 is a sectional view in a planar direction under the ground of the underground car park according to the embodiment of the present invention. Fig. 4 is a sectional view in a planar direction on the ground of the underground car park according to the embodiment of the present invention. Fig. 5 is a block diagram illustrating a configuration that controls the underground car park according to the embodiment of the present invention. Fig. 6 schematically illustrates the arrangement of

wires

43a and 43b in an elevating/lowering device according to the embodiment of the present invention. Fig. 7 is a front view of a locking device according to the embodiment of the present invention. Fig. 8 is a plan view of the locking device according to the embodiment of the present invention (at the time of locking). Fig. 9 is a plan view of the locking device according to the embodiment of the present invention (at the time of non-locking). Fig. 10 is a perspective view illustrating the configuration of a parking platform according to the embodiment of the present invention. Fig. 11 is a sectional view of a conveyance device according to the embodiment. Fig. 12 is a sectional view of a conveyance table according to the embodiment of the present invention. Fig. 13 is a plan view of the conveyance table according to the embodiment of the present invention. Fig. 14 is a plan view of front-side clamp bars according to the embodiment of the present invention. Fig. 15 is a plan view of a vehicle path according to the embodiment. Fig. 16 is a partially broken plan view of a clamp bar according to the embodiment of the present invention. Fig. 17 is a plan view of a clamp bar according to the embodiment of the present invention. Fig. 18 is a plan view explaining the operation of clamp bars according to the embodiment of the present invention. Fig. 19 is a side view explaining the operation of clamp bars according to the embodiment of the present invention. Fig. 20A is a diagram explaining the operation of clamp bars at the time of entering (in the case of a long wheelbase) according to the embodiment of the present invention. Fig. 20B is a diagram explaining the operation of clamp bars at the time of entering (in the case of the long wheelbase) according to the embodiment of the present invention. Fig. 20C is a diagram explaining the operation of clamp bars at the time of entering (in the case of the long wheelbase) according to the embodiment of the present invention. Fig. 20D is a diagram explaining the operation of clamp bars at the time of entering (in the case of the long wheelbase) according to the embodiment of the present invention. Fig. 20E is a diagram explaining the operation of clamp bars at the time of entering (in the case of the long wheelbase) according to the embodiment of the present invention. Fig. 21A is a diagram explaining the operation of clamp bars at the time of entering (in the case of a short wheelbase) according to the embodiment of the present invention. Fig. 21B is a diagram explaining the operation of clamp bars at the time of entering (in the case of the short wheelbase) according to the embodiment of the present invention. Fig. 21C is a diagram explaining the operation of clamp bars at the time of entering (in the case of the short wheelbase) according to the embodiment of the present invention. Fig. 21D is a diagram explaining the operation of clamp bars at the time of entering (in the case of the short wheelbase) according to the embodiment of the present invention. Fig. 21E is a diagram explaining the operation of clamp bars at the time of entering (in the case of the short wheelbase) according to the embodiment of the present invention. Fig. 22 is a side view of clamp bars at the time when a vehicle is lifted according to the embodiment of the present invention. Fig. 23 is a side view illustrating a state in which a conveyance motor is driven according to the embodiment of the present invention. Fig. 24A is a flowchart of entering processing performed by a controller according to the embodiment of the present invention. Fig. 24B is a flowchart of the entering processing performed by the controller according to the embodiment of the present invention. Fig. 24C is a flowchart of the entering processing performed by the controller according to the embodiment of the present invention. Fig. 24D is a flowchart of the entering processing performed by the controller according to the embodiment of the present invention. Fig. 25A is a flowchart of exiting processing performed by the controller according to the embodiment of the present invention. Fig. 25B is a flowchart of the exiting processing performed by the controller according to the embodiment of the present invention. Fig. 26 is a diagram illustrating an underground car park construction method (an installation step) according to the embodiment of the present invention. Fig. 27 is a diagram illustrating the underground car park construction method (an excavation step) according to the embodiment of the present invention. Fig. 28 is a diagram illustrating the underground car park construction method (an internal installation step) according to the embodiment of the present invention. Fig. 29 is a diagram illustrating the underground car park construction method (an external installation step) according to the embodiment of the present invention. Fig. 30 is a sectional view in a front direction of an underground car park in a variation of the embodiment of the present invention. Fig. 31 is a sectional view in a planar direction on the ground of an underground car park in a variation of the embodiment of the present invention. Fig. 32 is a sectional view in a planar direction on the ground of an underground car park in a variation of the embodiment of the present invention.

An embodiment of the present invention is described below with reference to the drawings. In the embodiment described below, an example of a case in which the present invention is implemented is described, and the present invention is not limited to the specific configuration described below. In implementing the present invention, a specific configuration according to the embodiment may be adopted appropriately.

(Entire Configuration of Underground Car park)
Fig. 1 is a transparent perspective view of an underground car park according to an embodiment of the present invention. Fig. 2 is a sectional view in a front direction of the underground car park according to the embodiment of the present invention. Fig. 3 is a sectional view in a planar direction under the ground of the underground car park according to the embodiment of the present invention. Fig. 4 is a sectional view in a planar direction on the ground of the underground car park according to the embodiment of the present invention. The entire configuration of an underground car park 100 according to the embodiment of the present invention is described below with reference to Fig. 1 to Fig. 4.

As illustrated in Fig. 1 and Fig. 2, the underground car park 100 is configured in such a way that a plurality of parking platforms 5 are hierarchically provided inside an outer shaft 1 that is formed in a cylindrical shape from the ground to the underground. The outer shaft 1 is formed in a cylindrical shape as a whole by arranging a plurality of piles in a circular shape and installing the plurality of piles. An opening on the ground level of the outer shaft 1 is covered with a cover plate 2. On the cover plate 2, a booth 7 in which occupants of a vehicle C get in or get out of the vehicle C is provided in the center of the outer shaft 1 having a cylindrical shape.

Inside the outer shaft 1, a loading table 3 having a circular shape is provided, and the loading table 3 is used to load the vehicle C at the time of getting in or getting out of the vehicle C. In the cover plate 2, a circular opening is formed in a position that corresponds to the loading table 3. The booth 7 is designed and arranged so as to cover at least the circular opening of the cover plate 2. At the time of entering, the occupant of the vehicle C drives the vehicle C such that the vehicle C enters the booth 7, parks the vehicle C on the loading table 3, which is located in the opening of the cover plate 2, in the booth 7, and gets out of the vehicle C. At the time of exiting, the occupant gets in the vehicle C on the loading table 3, which is located in the opening of the cover plate 2, in the booth 7, and drives the vehicle C so as to exit from the booth 7.

The loading table 3 together with an elevating/lowering frame 9 configures an elevating/lowering body 11. The underground car park 100 further includes an elevating/lowering device 4 that elevates and lowers the elevating/lowering body 11 including the loading table 3 between the ground and the underground through an elevating/lowering path 8 that is located in a central portion inside the outer shaft 1. Inside the outer shaft 1 under the ground, the elevating/lowering path 8 is formed along a path through which the elevating/lowering body 11 including the loading table 3 and the elevating/lowering frame 9 is elevated or lowered. As illustrated in Fig. 1 and Fig. 3, a plurality of parking platforms 5 under the ground are provided radially around the elevating/lowering path 8. The elevating/lowering body 11 further includes a rotation device 10 that rotates the loading table 3 with respect to the elevating/lowering frame 9, and a conveyance device 6 that clamps and lifts the wheels of a vehicle C that is supported by the loading table 3 or the parking platform 5, and conveys the vehicle C between the loading table 3 and the parking platform 5.

The loading table 3 that supports the vehicle C can be rotated in an arbitrary direction with respect to the elevating/lowering frame 9 by the rotation device 10. As described above, the elevating/lowering device 4 elevates and lowers the elevating/lowering body 11 including the loading table 3, the loading table 3 having a circular shape rotates in the elevating/lowering body 11, and the conveyance device 6 conveys a vehicle C between the loading table 3 and the parking platform 5. This allows the vehicle C to be parked on an arbitrary one of the parking platforms 5 that are provided hierarchically and radially under the ground and to exit from the arbitrary one.

As illustrated in Fig. 4, in the booth 7, a vehicle entrance 12 that includes an entrance gate 121 and a vehicle exit 13 that includes an exit gate 131 are formed. The entrance gate 121 is opened or closed by the gate opening/closing device 23, and the exit gate 131 is also opened or closed by the gate opening/closing device 23. Outside the booth 7, a portion in front of the vehicle entrance 12 is specified as a vehicle entering road 14, and a portion in front of the vehicle exit 13 is specified as a vehicle exiting road 15. An entering reception board 17 is provided on a right-hand side of a vehicle entering direction (a direction toward the booth 7) on the vehicle entering road 14. In addition, an entering/exiting starting board 18 is provided in a position that does not overlap the vehicle entering road 14 and the vehicle exiting road 15.

The underground car park 100 includes a controller 16 that controls the elevating/lowering device 4, the rotation device 10, the conveyance device 6, the vehicle entrance 12, and the vehicle exit 13. In the booth 7, front-wheel sensors 19a and 19b that detect the front wheels of a vehicle C on the loading table 3, and rear-

wheel sensors

19c and 19d that detect the rear wheels of the vehicle C on the loading table 3 are provided.

Human body sensors

20a, 20b, and 20c that detect a person inside the booth 7 are provided on an inner wall surface. In the vehicle entrance 12 and the vehicle exit 13,

gate sensors

21a and 21b are respectively provided that respectively detect objects that cross the vehicle entrance 12 and the vehicle exit 13. Hereinafter, the front-wheel sensors 19a and 19b and the rear-

wheel sensors

19c and 19d are collectively referred to as a “wheel sensor 19”, the human body sensors 20a to 20c are collectively referred to as a “human body sensor 20”, and the

gate sensors

21a and 21b are collectively referred to as a “gate sensor 21”.

The controller 16 controls the elevating/lowering device 4, the rotation device 10, the conveyance device 6, the vehicle entrance 12, and the vehicle exit 13 on the basis of a detection value of each of the sensors and signals from the entering reception board 17 and the entering/exiting starting board 18. The controller 16 is a computer that includes a processor, a memory, and the like, and performs arithmetic processing for performing control according to a program. The controller 16 is provided inside the outer shaft 1, namely, under the ground.

Fig. 5 is a block diagram illustrating a configuration that controls the underground car park according to the embodiment of the present invention. The underground car park 100 includes the gate opening/closing device 23, the elevating/lowering device 4, the rotation device 10, and the conveyance device 6, as described above. All of the devices above are controlled by the controller 16.

The underground car park 100 further includes a storage 50 that is connected to the controller 16. A utilization situation of the parking platforms 5 is stored in the storage 50. As described later, the underground car park 100 according to the embodiment can be utilized temporarily or periodically. In temporary utilization, the underground car park 100 can be utilized without prior registration, and a parking ticket is issued every time the underground car park 100 is utilized. In periodic utilization, a commutation ticket is issued by making pre-registration, and the commutation ticket is used at the time of entering or exiting. In the embodiment, identification information and information relating to the entering date and time are written to the parking ticket when the parking ticket is issued. In addition, identification information is written to the commutation ticket.

In the embodiment, information is magnetically written to the parking ticket, and writing and reading are performed according to a contact method. A small IC and a short-range wireless communication circuit are embedded into the commutation ticket, and information is written or read according to a short-range wireless communication scheme (such as near field communication (NFC)).

The storage 50 stores the number of a parking platform 5 that has been allocated in advance to a periodic user, and stores the number of a parking platform 5 that is used by a temporary user. The storage 50 also stores an interval between a front wheel and a rear wheel of a vehicle C that is parked on a parking platform 5 or the positions of the front wheel and the rear wheel.

The entering reception board 17 and the entering/exiting starting board 18 are connected to the controller 16. The entering reception board 17 includes a ticket issuing button 171, a ticket issuing port 172, a wireless reader 173, and a monitor 174. When the ticket issuing button 171 is depressed, the entering reception board 17 issues a parking ticket in which an identification number is stored, and ejects the parking ticket from the ticket issuing port 172.

The controller 16 specifies a parking platform 5 that is not allocated to a periodic user and that is available by reading the utilization situation of the parking platforms 5 from the storage 50, and stores information relating to the specified parking platform 5 in the storage 50 in association with the identification number of the issued parking ticket. When a commutation ticket is read by the reader 173, the entering reception board 17 refers to the storage 50, and specifies a parking platform 5 that is associated with the identification information of the commutation ticket. The monitor 174 conducts a display that guides a user in such a way that the user will perform the operations described above.

The entering/exiting starting board 18 includes a safety confirmation button 181, a parking ticket insertion port 182, a wireless reader 183, a monitor 184, and an emergency stop button 186. Inside the parking ticket insertion port 182, a magnetic reader 185 is included. The entering/exiting starting board 18 is operated by a user at the time of the entering and exiting of a vehicle C. At the time of entering, the safety confirmation button 181 is used to close the entrance gate 121 of the booth 7 that the vehicle C has entered. At the time of exiting, the safety confirmation button 181 is used to close an exit gate 131 of the booth 7 that the vehicle C has exited from. When it is detected that the safety confirmation button 181 has been depressed, a signal indicating this fact is transmitted to the controller 16.

The emergency stop button 186 is used when a user recognizes any emergency. When the emergency stop button 186 is depressed, a signal indicating this fact is transmitted to the controller 16, and the controller 16 stops the driving of all devices including the elevating/lowering device 4.

When the parking ticket is inserted into the parking ticket insertion port 182, the magnetic reader 185 reads information stored in the parking ticket. The wireless reader 183 reads information from the commutation ticket. The monitor 184 conducts a display that guides a user in such a way that the user will perform the operations described above. A speaker may be further provided in the entering reception board 17 and the entering/exiting starting board 18, and the speaker may provide sound guidance in addition to or instead of guidance through the

monitors

174 and 184.

The wheel sensor 19, the human body sensor 20, and the gate sensor 21 are further connected to the controller 16. In addition, the entering reception board 17 and the entering/exiting starting board 18 described above are connected to the controller 16. The controller 16 controls the gate opening/closing device 23, the elevating/lowering device 4, the rotation device 10, and the conveyance device 6 on the basis of an operation performed on the entering reception board 17 or the entering/exiting starting board 18, detection values of the wheel sensor 19, the human body sensor 20, and the gate sensor 21, and information stored in the storage. Details of control will be described later.

A communication device 90 is further connected to the controller 16. The communication device 90 can perform communication via the Internet. Details of the operation of the communication device 90 will be described later.

(Outline of Operation of Underground Car park)
At the time of the entering of a vehicle C, a driver moves the vehicle C forward to the booth 7 along the vehicle entering road 14, and stops the vehicle C in front of the vehicle entrance 12. When the driver operates the entering reception board 17, the entrance gate 121 of the vehicle entrance 12 is opened, and the driver makes the vehicle C enter the booth 7. In the booth 7, the driver stops the vehicle C on the loading table 3, which is located at a ground level, namely, in the opening of the cover plate 2. All occupants get out of the vehicle C, and exit from the booth 7. When the entering/exiting starting board 18 is operated, the controller 16 closes the entrance gate 121 of the vehicle entrance 12, and the elevating/lowering device 4, the rotation device 10, and the conveyance device 6 covey the vehicle C on the loading table 3 to an appropriate parking platform 5.

At the time of the exiting of a vehicle C, by operating the entering/exiting starting board 18, the controller 16 controls the elevating/lowering device 4, the rotation device 10, and the conveyance device 6 so as to convey the vehicle C from a parking platform 5 to the loading table 3 and to elevate the loading table 3 to the ground level, namely, to the opening of the cover plate 2 (a vehicle drive-in position) by using the elevating/lowering device 4. At this time, the vehicle C is rotated by the rotation device 10 in a direction in which the head of the vehicle C faces the vehicle exit 13. Under the control of the controller 16, the exit gate 131 of the vehicle exit 13 is opened, and the occupants enter the booth 7, and get in the vehicle C that is parked on the loading table 3. The driver drives the vehicle C so as to exit from the vehicle exit 13 through the vehicle exiting road 15.

(Elevating/Lowering Device)
The elevating/lowering device 4 includes, under the ground, an elevating/lowering driving device 41, a counterweight 42, wires 43a that connect the elevating/lowering driving device 41 and the elevating/lowering frame 9, wires 43b that connect the elevating/lowering driving device 41 and the counterweight 42, and a plurality of sheaves 44a to 44f that arrange the

wires

43a and 43b.

Fig. 6 schematically illustrates the arrangement of the

wires

43a and 43b in an elevating/lowering device according to the embodiment of the present invention. In the elevating/lowering frame 9,

arms

91a and 91b are extended in a direction away from both ends of the elevating/lowering frame 9, and one end of each of the wires 43a is fixed to the

arm

91a or 91b. Each of the wires 43a is arranged from the elevating/lowering frame 9 through the sheave 44a above the elevating/lowering frame, the sheave 44b in the middle, and the sheave 44c above the elevating/lowering driving device, and is wound around a winding drum 411a or 411b of the elevating/lowering driving device 41.

The wires 43b are wires that are located closer to the counterweight 42 than the winding drums 411a and 411b, and continue from the wires 43a. Each of the wires 43b is arranged from the winding drum 411a or 411b through the sheave 44c above the elevating/lowering driving device, the sheave 44e above the counterweight, and the sheave 44f of the counterweight that is fixed to the counterweight 42, and is fixed to an upper portion of the outer shaft 1.

(Locking Device)
As illustrated in Fig. 4, locking devices 22 are provided around the loading table 3 at equal intervals of 90 degrees. Fig. 7 is a front view of a locking device according to the embodiment of the present invention. Fig. 8 is a plan view of the locking device according to the embodiment of the present invention (at the time of locking). Fig. 9 is a plan view of the locking device according to the embodiment of the present invention (at the time of non-locking).

The locking device 22 includes a locking roller 222 having a truncated cone shape, and the locking roller 222 is supported by a shaft 221, and rotates around the shaft 221. The shaft 221 is rotatable with respect to a perpendicular shaft 225 that is fixed to the loading table 3. Due to the rotation of the shaft 221 around the perpendicular shaft, the locking roller 222 rotationally moves between a non-engaging position that is located within a peripheral portion of the loading table 3 and an engaging position that protrudes from the loading table 3 toward the cover plate 2. The rotation of the shaft 221 is implemented by extending or shortening a cylinder 224 in which one end is rotatably fixed to the shaft 221 and the other end is rotatably fixed to the loading table 3.

The shaft 211 is inclined in an upward direction from the perpendicular shaft 225. Therefore, in a locking position, a conical surface of the locking roller 222 is supported in a state in which the conical surface is parallel to a receiving surface 223 that is horizontal. Both ends of the receiving surface 223 are inclined downward in order to support the locking roller 222, which moves between an engaged position and the engaging position due to rotation around the perpendicular shaft 225.

The receiving surface 223 is formed inside the opening of the cover plate 2. Inside the opening of the cover plate 2, two sets of four receiving surfaces 223 that are located at equal intervals of 90 degrees are provided. One set of four receiving surfaces 223 is provided in a position that corresponds to the positions of four locking rollers 222 in a case in which the loading table 3 is located in a position at the time of entering. The other set of four receiving surfaces 223 is provided in a position that corresponds to the positions of four locking rollers 222 in a case in which the loading table 3 is located in a position at the time of exiting.

As described above, the elevating/lowering frame 9, which supports the loading table 3, is elevated or lowered by the elevating/lowering device 4, and is supported by the elevating/lowering device 4 even when the loading table 3 is located in the opening of the cover plate 2 (in the vehicle drive-in position). Simultaneously, the elevating/lowering frame 9 is supported by the locking devices 22. Therefore, even when the elevating/lowering device 4 fails to maintain the loading table 3 in the vehicle drive-in position, namely, inside the booth 7 due to, for example, the cutoff of the wire 43, the locking devices 22 can maintain the loading table 3 inside the booth 7 such that the safety of occupants who get in or get out of a vehicle C is secured. When the loading table 3 is maintained in the vehicle drive-in position, the tension of the wire 43 of the elevating/lowering device 4 is released, and the elevating/lowering frame 9 including the loading table 3 is only held by the locking rollers 222. This enables the fatigue of the wire 43 to be reduced, and also enables energy for maintaining the loading table 3 to be reduced.

(Parking Platform)
Fig. 10 is a perspective view illustrating the configuration of a parking platform according to the embodiment of the present invention. Inside the outer shaft 1, a plurality of pillars 51 are erected that are fixed by being driven into the bottom, and the parking platform 5 is fixed to these pillars 51. The parking platform 5 includes a pair of pallets 52 that are separated into a right-side portion and a left-side portion. The pallet 52 has a length that is sufficient to park a vehicle C. The pair of pallets 52 have a one-end opened square cross section, and are opened so as to face each other. Each of the pallets 52 has planes that extend in a longitudinal direction at an upper stage and a lower stage. The plane at the upper stage is a wheel supporting surface 53 that supports the wheels of the vehicle C, and the plane at the lower stage is a conveyance-device supporting surface 54 that supports the conveyance device 6.

(Conveyance Device)
Fig. 11 is a sectional view of a conveyance device according to the embodiment. The loading table 3 includes, at the center, a vehicle path 61 that has a U-shaped cross section and that is rotatable with respect to the elevating/lowering frame 9. The vehicle path 61 is rotated with respect to the elevating/lowering frame 9 by the rotation device 10. The rotation device 10 is configured by a motor 101 that is provided in the elevating/lowering frame 9, a planetary gear 103 that converts the rotation of the motor 101 into the rotation of the loading table 3, and a bearing 102 that is provided between the vehicle path 61 of the loading table 3 and the elevating/lowering frame 9.

The vehicle path 61 is installed with a slider 63 that includes a conveyance table 62. The slider 63 is reciprocatably installed in the vehicle path 61 via rollers 64 that are provided on the inner side surfaces of the vehicle path 61. The slider 63 is reciprocated due to the driving of the conveyance motor 65 that is installed in the vehicle path 61. Therefore, a rack 66 is formed on a lower surface of the slider 63, and the rack 66 meshes with a gear 67 on a side of a rotary shaft of the conveyance motor 65.

The conveyance table 62 is used to load a vehicle, rollers 64 that come into rolling contact with the inner surfaces of the slider 63 are installed on both side surfaces of the conveyance table 62, and the conveyance table 62 reciprocates with respect to the slider 63 due to the rolling of the rollers 64. Fig. 12 is a sectional view of a conveyance table according to the embodiment of the present invention. Fig. 13 is a plan view of the conveyance table according to the embodiment of the present invention. As illustrated in Fig. 12, a chain 68 is connected to the lower surface of the conveyance table 62. The chain 68 is endlessly stretched to the vehicle path 61, and is wound around a sprocket 69 (see Fig. 11) that is rotatably installed on a lower surface of the slider 63.

Accordingly, when the slider 63 moves due to the driving of the conveyance motor 65, the movement force of the slider 63 is transmitted to the conveyance table 62 via the sprocket 69 and the chain 68 such that the conveyance table 62 reciprocates. Due to the movement, the conveyance table 62 together with the slider 63 enters the parking platform 5. At this time, slider rollers 70 that are installed on the lower surface of the slider 63 and conveyance rollers 71 that are installed on the lower surface of the conveyance table 62 roll on the conveyance-device supporting surface 54 of the parking platform 5 when the conveyance table 62 enters the parking platform 5.

The conveyance table 62 is installed with two pairs of front-side clamp bars, clamp bars 72 and clamp bars 73, that correspond to the right-side and left-side front wheels of a vehicle C, and two pairs of rear-side clamp bars, clamp bars 74 and clamp bars 75, that correspond to the right-side and left-side rear wheels of the vehicle C. The clamp bars 72 and the clamp bars 73 are provided for the front wheels FT of the vehicle C that is supported by the loading table 3 or the parking platform 5, and abut onto the lower half portions of the front wheels FT from the front and rear. The clamp bars 74 and the clamp bars 75 are provided for the rear wheels RT of the vehicle C that is supported by the loading table 3 or the parking platform 5, and abut onto the lower half portions of the rear wheels RT from the front and rear.

The clamp bars 72 to 75 can be vertically moved by cylinders 76 that are provided in the lower portions of the clamp bars 72 to 75 and are used to lift the clamp bars. The clamp bars 72 to 75 simultaneously operate in a vertical direction. In addition, the clamp bars 72 to 75 are rotatable around the cylinders 76. The clamp bars 72 to 75 rotate between a restriction position in which the clamp bars 72 to 75 are orthogonal to a vehicle travelling direction such that the movement of wheels is restricted and a retreat position in which the clamp bars 72 to 75 are parallel to the vehicle travelling direction such that the wheels are movable, and the clamp bars 72 to 75 are fixed in each of the restriction position and the retreat position.

Fig. 14 is a plan view of front-side clamp bars according to the embodiment of the present invention. Fig. 15 is a plan view of a vehicle path according to the embodiment. The clamp bars 72 and 73 of the front side are installed on a front-side movable table 77 that supports these clamp bars. The front-side movable table 77 moves on slide rails 86 (see Fig. 12) of the conveyance table 62 in a direction parallel to a travelling direction of the vehicle C by extending or shortening a parallel-movement cylinder 79. Due to this configuration, the clamp bars 72 and 73 of the front side move within a range of a distance D1.

Similarly, the clamp bars 74 and 75 of the rear side are installed on a rear-side movable table 78 that supports these clamp bars. The rear-side movable table 78 moves on slide rails 86 of the conveyance table 62 in the direction parallel to the travelling direction of the vehicle C by extending or shortening a parallel-movement cylinder 80. Due to this configuration, the clamp bars 74 and 75 of the rear side move within a range of a distance D2. The clamp bars 72 to 75 rotationally move by extending or shortening rotation cylinders 82 to 85 serving as bar rotationally moving devices, and the rotational movement causes the clamp bars 72 to 75 to abut onto the front wheels and rear wheels of the vehicle C and to clamp the front wheels and the rear wheels. Each of the clamp bars 72 to 75 includes a sensor (not illustrated) that detects the abutting of wheels.

Fig. 16 is a partially broken plan view of a clamp bar according to the embodiment of the present invention. Fig. 17 is a plan view of a clamp bar according to the embodiment of the present invention. Fig. 16 and Fig. 17 illustrate the clamp bar 72 as an example, and the clamp bars 73 to 75 have the same configuration. The clamp bar 72 includes a shaft 721 that is connected to a piston of the rotation cylinder 82, and a pipe body 722 that is rotatably installed outside the shaft 721. The pipe body 722 abuts onto a wheel of the vehicle C, and is rotatable with respect to the shaft 721 via

bearings

723 and 724. When the clamp bar 72 having the structure above abuts onto a wheel, the pipe body 722 that is the outer portion of the clamp bar 72 rotates, and this allows the clamp bar 72 to reliably abut onto the wheel.

Fig. 18 is a plan view explaining the operation of clamp bars according to the embodiment of the present invention. Fig. 19 is a side view explaining the operation of clamp bars according to the embodiment of the present invention. When the front-side clamp bars 72 and 73 rotationally move by extending the

rotation cylinders

82 and 83 so as to abut onto a front wheel T, the

pipe bodies

722 and 732 rotate. This enables the clamp bars 72 and 73 to get under the front wheel T, as illustrated with a broken line in Fig. 19. The clamp bars 72 and 73 reliably abut onto the front wheel T, and a sufficient clamping force can be secured when the vehicle C is lifted, as described later. In addition, at the time of clamping as described above, the clamp bars 72 and 73 do not damage the front wheel. The same is applied to a rear-wheel side.

Further, on a front-wheel side, the clamp bars 72 are used as a vehicle stopper when the vehicle C gets onto the loading table 3, as described later. When the front wheel T abuts onto the clamp bar 72, the pipe body 722 rotates along with the rotation of the wheel T of the vehicle C, and this causes the idling of the wheel T. Therefore, the vehicle C does not run over the clamp bars 72 serving as a wheel stopper, and safety is secured.

Fig. 20A to Fig. 20E are diagrams explaining the operation of clamp bars at the time of entering (in the case of a long wheelbase) according to the embodiment of the present invention. In Fig. 20A to Fig. 20E, a vehicle C enters the conveyance table 62 in a rightward direction of the drawings while facing forward. In a case where the entering of a vehicle C is waited for, the rotation cylinder 82 is first driven such that the clamp bars 72, which are located at the deepest position, are moved to the restriction position in which the clamp bars 72 are orthogonal to a travelling direction of the vehicle C, and the other clamp bars 73 to 75 are moved to the retreat position in which the clamp bars 73 to 75 are parallel to the travelling direction of the vehicle, as illustrated in Fig. 20A. This enables the entering of the vehicle C.

When the vehicle C enters the conveyance table 62, front wheels FT are detected by rear-side wheel sensors 88 that are installed in the rear-side movable table 78. When the vehicle C further moves forward, the front wheels FT pass through the rear-side wheel sensors 88, and the rear-side wheel sensors 88 do not detect any other wheels. After the rear-side wheel sensors 88 do not detect any other wheels, the rotation cylinder 84 is driven in such a way that the clamp bars 74 are located in the restriction position, as illustrated in Fig. 20B. When the vehicle C further moves forward and front-side wheel sensors 87 detect wheels earlier than the rear-side wheel sensors 88, the front wheels FT abut onto the clamp bars 72 before rear wheels RT abut onto the clamp bars 74, as illustrated in Fig. 20C. In this case, the rear-side movable table 78 is fixed in a current position, and this causes the clamp bars 74 to function as a wheel stopper.

In this case, the front-side movable table 77 is in a movable state, and the front-side movable table 77 is pushed forward by the front wheels FT of the vehicle C that is moving forward. In the clamp bars 72, the pipe bodies 722, which are the outer portions of the clamp bars 72, are rotatable, as described above. Therefore, the front wheels FT do not run over the clamp bars 72, and move forward while pushing the clamp bars 72. As illustrated in Fig. 20D, when the rear wheels RT are detected by the rear-side wheel sensors 88, and abut onto the clamp bars 74, the clamp bars 74 act as a wheel stopper because the rear-side movable table 78 is fixed, and the vehicle C does not further move forward.

In this state, when the clamp bars 73 and 75 rotationally move to the restriction position, as illustrated in Fig. 20E, the front wheels FT are clamped by the clamp bars 72 and the clamp bars 73, and the rear wheels RT are clamped by the clamp bars 74 and the clamp bars 75. In this state, the front-side movable table 77 is also fixed. This causes the vehicle C to completely fail to move forward and backward.

Fig. 20A to Fig. 20E illustrate an operation in a case where a vehicle C has a wheelbase (an interval between a front wheel and a rear wheel) that is longer than an initial interval between the front-side movable table 77 and the rear-side movable table 78 (see Fig. 20A) and where the vehicle C enters the conveyance table 62. An operation will be described below in a case where a vehicle C has a wheelbase that is shorter than the initial interval between the front-side movable table 77 and the rear-side movable table 78 (see Fig. 20A) and where the vehicle C enters the conveyance table 62.

Fig. 21A to Fig. 21E are diagrams explaining the operation of clamp bars at the time of entering (in the case of a short wheelbase) according to the embodiment of the present invention. Also in Fig. 21A to Fig. 21E, a vehicle C enters the conveyance table 62 in a right direction of the drawings while facing forward. Fig. 21A illustrates a state in which the entering of a vehicle C is waited for, and this state is the same as the state illustrated in Fig. 20A. Namely, the conveyance device 6 does not need to acquire in advance information relating to a wheelbase of a vehicle C that is about to enter the conveyance table 62.

When the vehicle C enters the conveyance table 62, front wheels FT are detected by the rear-side wheel sensors 88 that are installed in the rear-side movable table 78. When the vehicle C further moves forward, the front wheels FT pass through the rear-side wheel sensors 88, and the rear-side wheel sensors 84 do not detect any other wheels. After the rear-side wheel sensors 88 do not detect any other wheels, the rotation cylinder 84 is driven in such a way that the clamp bars 74 are located in the restriction position, as illustrated in Fig. 21B. When the vehicle C further moves forward and the rear-side wheel sensors 88 detect wheels again before the front-side wheel sensors 87 detect wheels, rear wheels RT abut onto the clamp bars 74 before the front wheels FT abut onto the clamp bars 72, as illustrated in Fig. 21C. In this case, the front-side movable table 77 is fixed in a current position, and this causes the clamp bars 72 to function as a wheel stopper.

In this case, the rear-side movable table 78 is in a movable state, and the rear-side movable table 78 is pushed forward by the rear wheels RT of the vehicle C that is moving forward. In the clamp bars 74, the pipe bodies 742, which are the outer portions of the clamp bars 74, are rotatable, as described above. Therefore, the rear wheels RT do not run over the clamp bars 74, and move forward while pushing the clamp bars 74. As illustrated in Fig. 21D, when the front wheels FT are detected by the front-side wheel sensors 87, and abut onto the clamp bars 72, the clamp bars 72 act as a wheel stopper because the front-side movable table 77 is fixed, and the vehicle C does not further move forward.

In this state, when the clamp bars 73 and 75 rotationally move to the restriction position, as illustrated in Fig. 21E, the front wheels FT are clamped by the clamp bars 72 and the clamp bars 73, and the rear wheels RT are clamped by the clamp bars 74 and the clamp bars 75. In this state, the rear-side movable table 78 is also fixed. This causes the vehicle C to completely fail to move forward and backward.

Fig. 22 is a side view of clamp bars at the time when a vehicle is lifted according to the embodiment of the present invention. As illustrated in Fig. 22, the cylinder 76 of each of the clamp bars 72 to 75 is driven in such a way that all of the clamp bars 72 to 75 simultaneously rise and support the front wheels FT and the rear wheels RT, and the vehicle C is lifted.

Fig. 23 is a side view illustrating a state in which a conveyance motor is driven according to the embodiment of the present invention. The conveyance motor 65 is driven so as to move the slider 63 toward the parking platform 5 via the gear 67 and the rack 66. When the slider 63 moves while being guided by the rollers 89, the rotation of the sprocket 69 of the slider 63 causes the conveyance table 62 to move in a rightward direction on the slider 63 via the chain 68.

Due to the movement above, the conveyance table 62 enters the parking platform 5 together with the slider 63, each of the slider rollers 70 and the conveyance rollers 71 moves on the conveyance-device supporting surface 54 of the parking platform 5, and the conveyance table 62 reaches a prescribed parking position. At this time, the conveyance rollers 71, which are installed at a distal end of the conveyance table 62, function as a supporting member that prevents the conveyance device 6 from hanging down. The parking platform 5 includes receiving rails 55 that support the conveyance rollers 71 from below when the conveyance table 62 is delivered toward the parking platform 5.

When the vehicle C reaches the prescribed parking position, the driving of the conveyance motor 65 is stopped, the cylinders 76 are driven in such a way that the clamp bars 72 to 75 are lowered, and the wheels of the vehicle C are supported by the wheel supporting surface 53 of the parking platform 5. This causes the vehicle C to be parked in a prescribed position of the parking platform 5. Then, the clamp bars 72 to 74 are rotationally moved to a retreat position in a state in which the clamp bars 75, which abut onto the rear wheels RT from a rear side, are fixed in the restriction position, and the clamping state of the front wheels FT and the rear wheels RT is released.

The conveyance motor 65 is driven so as to move the slider 63 via the gear 67 and the rack 66. At this time, the rotational movement of the sprocket 69 of the slider 63 causes the conveyance table 62 to move in a leftward direction via the chain 68. Consequently, the clamp bars 72 to 75 and the conveyance table 62, together with the slider 63, return to a lower position inside the loading table 3. Further, the elevating/lowering frame 9 is moved back to the vehicle drive-in position, the parallel-

movement cylinders

79 and 80 are extended or shortened such that the front-side movable table 77 and the rear-side movable table 78 move back to their respective initial positions, and it enters into an entering waiting state.

At the time of entering, as described above, when the positions of the front-side movable table 77 and the rear-side movable table 78 for teaching a front wheel FT and a rear wheel RT of a vehicle C are determined in accordance with an interval (a wheelbase) between the front wheel FT and the rear wheel RT (for example, at the timing illustrated in Fig. 20D or Fig. 20E, or the timing illustrated in Fig. 22), the controller 16 stores, in the storage 50, the positions of the front-side movable table 77 and the rear-side movable table 78 or an interval between the front-side movable table 77 and the rear-side movable table 78 in association with the number of a parking platform 5 on which the vehicle C is parked. At the time of exiting, the controller 16 reads the positions of the front-side movable table 77 and the rear-side movable table 78 that have been stored in the storage 50 in association with a parking platform 5 to be exited from, and controls the conveyance device 6 in accordance with the read positions.

At the time of exiting, the elevating/lowering device 4 is first driven so as to lower the elevating/lowering frame 9 from the vehicle drive-in position until the loading table 3 and the parking platform 5 to be exited from are at the same level. The loading table 3 is rotated by the rotation device 10 in such a way that the orientation of the loading table 3 is parallel to the parking platform 5 to be exited from. The parallel-

movement cylinders

79 and 80 are driven in such a way that the front-side movable table 77 and the rear-side movable table 78 are located in the positions read from the storage 50. The rotation cylinders 82 to 85 are driven in such a way that only the nearest clamp bars 75 are located in the restriction position and the other clamp bars 72 to 74 are located in the retreat position. In this state, the conveyance motor 65 is driven so as to move the slider 63 and the conveyance table 62 toward the parking platform 5 via the gear 67, the rack 66, the sprocket 69, and the chain 68.

When the slider 63 and the conveyance table 62 move to a prescribed position, the nearest clamp bars 75 abut onto the rear wheels RT of a parked vehicle C from a rear side, and stop. In this state, the rotation cylinders 82 to 84 are driven so as to rotate the other clamp bars 72 to 74 to the restriction position, and this causes the front wheels FT and the rear wheels RT to be clamped by the clamp bars 72 to 75. Then, the cylinders 76 are driven so as to lift the clamp bars 72 to 75, and in this state, the conveyance motor 65 is driven such that the conveyance table 62 and the slider 63 move back to the loading table 3.

When the conveyance table 62 and the slider 63 completely move back to the loading table 3, the elevating/lowering device 4 is driven, and the elevating/lowering frame 9 is elevated in such a way that the loading table is located in the vehicle drive-in position. Simultaneously, the rotation device 10 is driven so as to rotate the loading table 3 in such a way that the head of the vehicle C faces the vehicle exit 13. When the loading table 3 reaches the vehicle drive-in position, the locking rollers 222 are made to be located in the engaging position, only the clamp bars 72 located at the deepest position are maintained in the restriction position, and the other clamp bars 73 to 75 are moved to the retreat position. By doing this, when the exit gate 131 of the vehicle exit 13 is opened, the exiting of the vehicle C is available. At this time, the clamp bars 72 located at the deepest position function as a vehicle stopper when the vehicle C incorrectly tries to move backward.

(Control Flow)
Figs. 24A to 24D are flowcharts of entering processing performed by a controller according to the embodiment of the present invention. As described above, the underground car park 100 according to the embodiment can be utilized temporarily or periodically. In the entering processing, it is first determined whether the underground car park 100 will be utilized temporarily or periodically. Specifically, in a waiting state, the controller 16 determines whether the ticket issuing button 171 of the entering reception board 17 has been depressed (step S101) and whether a commutation ticket has been read by the reader 173 of the entering reception board 17 (step S102).

First, temporary utilization is described. In the waiting state, when the ticket issuing button 171 is depressed (YES in step S101), the entering reception board 17 issues a parking ticket from the ticket issuing port 172 (step S103). When the parking ticket is issued, the controller 16 stores the identification information and issuance date and time of the parking ticket in the storage 50.

A driver removes the issued parking ticket from the ticket issuing port 172. The controller 16 determines whether the parking ticket has been removed from the ticket issuing port 172 (step S104). When the parking ticket is removed (YES in step S104), the controller 16 drives the gate opening/closing device 23 so as to open the entrance gate 121 of the vehicle entrance 12 (step S105).

When a vehicle C enters the booth 7 from the vehicle entrance 12, the conveyance device 6 performs the operations described with reference to the Figs. 20A to 20E and Figs. 21A to 21E so as to clamp the wheels of the vehicle C (step S106). Occupants including the driver get out of the vehicle C, and exit from the booth 7. The driver goes to the entering/exiting starting board 18 with the parking ticket, and inserts the parking ticket into the entering/exiting starting board 18. The controller 16 determines whether the parking ticket has been inserted into the entering/exiting starting board 18 (step S107).

When the parking ticket is inserted into the entering/exiting starting board 18 (YES in step S107), the controller 16 determines whether the safety confirmation button 181 of the entering/exiting starting board 18 has been depressed (step S108). The driver confirms that there remain no persons inside the booth 7, and depresses the safety confirmation button 181 of the entering/exiting starting board 18. When the safety confirmation button 181 of the entering/exiting starting board 18 is depressed (YES in step S108), the controller 16 determines whether the human body sensor 29 has detected a person inside the booth 7 (step S109).

When the human body sensor 20 detects a person (YES in step S109), the entering/exiting starting board 18 ejects the parking ticket (step S110), sound instructing that the person exit from the booth 7 is emitted inside the booth 7 (step S111), and the processing returns to step S107. Stated another way, when a person is detected by the human body sensor 20 (YES in step S109) after the parking ticket has been inserted (YES in step S107) and the safety confirmation button 181 has been depressed (YES in step S108), the driver is made again to insert the parking ticket and to confirm safety. When the human body sensor 20 detects a person (YES in step S109), the processing may return to step S108 without ejecting the parking ticket (step S110), and the driver may be made to depress the safety confirmation button 181 again.

When no persons are detected (NO in step S109), the controller 16 controls the entering/exiting starting board 18 to eject the parking ticket (step S112), drives the gate opening/closing device 23 to close the entrance gate 121 of the vehicle entrance 12 (step S120), moves the locking rollers 222 to the non-locking position, and releases the locking of the loading table 3 (step S121). The controller 16 specifies an available parking platform 5 in accordance with the utilization situation of parking platforms 5 that is stored in the storage 50, and stores information relating to the specified parking platform 5 in the storage 50 in association with the identification information of the parking ticket of the vehicle C. Consequently, the identification information of the parking ticket, the number of the parking platform 5, and parking date and time are stored in the storage 50 in association with each other.

The controller 16 drives the elevating/lowering device 4 and the rotation device 10 so as to lower the elevating/lowering frame 9 and rotate the loading table 3 using the rotation device 10 in such a way that the vehicle C can enter the specified parking platform 5 (step S122). When the elevating/lowering device 4 and the rotation device 10 stop, the conveyance device 6 extends the conveyance table 62 and the slider 63 toward the parking platform 5, as described with reference to Fig. 23, and conveys the vehicle C in the parking platform 5 (step S123).

The controller 16 drives the cylinders 76 so as to lower the clamp bars 72 to 75 such that the vehicle C is supported by the parking platform 5. The controller 16 also drives the rotation cylinders 82 to 84 so as to rotate the clamp bars 72 to 74 to the retreat position, and releases a state in which the clamp bars 72 to 75 clamp wheels (step S124). The controller 16 drives the conveyance device 6 such that the conveyance table 62 and the slider 63 that have been extended inside the parking platform 5 return to the loading table 3 (step S125), drives the elevating/lowering device 4 and the rotation device 10 such that the loading table 3 returns to the vehicle drive-in position (step S126), rotates the locking rollers 222 to the locking position, and fixes the loading table 3 to the cover plate 2 by using the locking rollers 222 (step S127).

Entering using a commutation ticket is described next. When the reader 173 of the entering reception board 17 reads a storage medium (YES in step S102), the controller 16 performs authentication by collating information that the reader 173 has read from the storage medium with information relating to a registrant or a registered vehicle that has been stored in the storage 50 (step S113). Stated another way, an authentication device is configured by the reader 173 and the controller 16. The identification information of the registrant or the registered vehicle that has been stored in the storage medium has been stored in advance in the storage 50 in association with a specified parking platform 5.

When the authentication device successfully performs authentication (YES in step S113), the controller 16 drives the gate opening/closing device 23 so as to open the entrance gate 121 of the vehicle entrance 12 (step S114). When a vehicle C enters the booth 7 from the vehicle entrance 12, the conveyance device 6 performs the operations described with reference to the Figs. 20A to 20E and Figs. 21A to 21E so as to clamp the wheels of the vehicle C (step S115). Occupants including the driver get out of the vehicle C, and exit from the booth 7.

The driver goes to the entering/exiting starting board 18, and causes the reader 184 of the entering/exiting starting board 18 to read the storage medium. When the reader 184 reads the storage medium, the controller 16 performs authentication by collating information that the reader 184 has read from the storage medium with information relating to a registrant or a registered vehicle that has been stored in the storage 50 (step S116). Stated another way, an authentication device is configured by the reader 184 and the controller 16.

When the registered vehicle or the registrant is successfully authenticated in accordance with the reading of the storage medium (YES in step S116), the controller 16 determines whether the safety confirmation button 181 of the entering/exiting starting board 18 has been depressed (step S117). The driver confirms that there remain no persons inside the booth 7, and depresses the safety confirmation button 181 of the entering/exiting starting board 18. When the safety confirmation button 181 of the entering/exiting starting board 18 is depressed (YES in step S117), the controller 16 determines whether the human body sensor 20 has detected a person inside the booth 7 (step S118).

When the human body sensor 20 detects a person (YES in step S118), sound instructing that the person exit from the booth 7 is emitted inside the booth 7 (step S119), and the processing returns to step S115. Stated another way, when a person is detected by the human body sensor 20 (YES in step S118) after the registered vehicle or the registrant has been successfully authenticated (YES in step S116) and the safety confirmation button 181 has been depressed (YES in step S117), the driver is made again to perform the authentication of the registered vehicle or the registrant and safety confirmation. When no persons are detected (NO in step S118), the processing moves on to step S120. The subsequent processes are as described above. When the human body sensor 20 detects a person (YES in step S117), the processing may return to step S116, and the driver may be made to depress the safety confirmation button 181 again.

Figs. 25A to 25B are flowcharts of exiting processing performed by the controller according to the embodiment of the present invention. In the exiting processing, it is first determined whether a parking ticket has been inserted into the parking ticket insertion port 182 in the entering/exiting starting board 18 (step S201) and whether the wireless reader 183 has read a commutation ticket (step S202). When the parking ticket is inserted (YES in step S201) or the commutation ticket is read (YES in step S202), the locking rollers 222 of the loading table 3 are moved to the non-locking position, and locking is released (step S203).

The controller 16 collates identification information that has been read from the parking ticket or the commutation ticket with identification information that has been stored in the storage 50 so as to specify a parking platform that corresponds to the parking ticket or the commutation ticket. The controller 16 drives the elevating/lowering device 4 and the rotation device 10 so as to lower the elevating/lowering frame 9 and rotate the loading table 3 using the rotation device 10 in such a way that a vehicle C can exit from the specified parking platform 5 (step S204). When the elevating/lowering device 4 and the rotation device 10 stop, the conveyance device 6 extends the conveyance table 62 and the slider 63 toward the parking platform 5, and causes the conveyance table 62 and the slider 63 to get under the vehicle C (step S205).

Then, the conveyance device 6 drives the parallel-

movement cylinders

79 and 80, the rotation cylinders 82 to 84, and the cylinders 76 so as to clamp the front wheels FT and the rear wheels RT of the vehicle by using the clamp bars 72 to 75 and to lift the vehicle above the parking platform 5 (step S206). In the storage 50, the positions of the front wheel FT and the rear wheel RT or an interval between the front wheel FT and the rear wheel RT have been stored in association with the number of the parking platform 5. Therefore, the controller 16 drives the parallel-

movement cylinders

79 and 80 in accordance with the stored positions or interval so as to rapidly move the front-side movable table 77 and the rear-side movable table 78 to an appropriate position.

When the conveyance device 6 lifts the vehicle C, the controller 16 controls the conveyance table 62 and the slider 63 to return to the loading table 3 (step S207), drives the elevating/lowering device 4 and the rotation device 10 so as to elevate the loading table 3 to the vehicle drive-in position and to rotate the loading table 3 in a direction in which the head of the vehicle C faces the vehicle exit 13 (step S208). The controller 16 moves the locking rollers 222 to the locking position (step S209), and opens the exit gate 131 (step S210).

When the exit gate 131 is opened, a driver enters the booth 7, gets in the vehicle C, and exits from the booth while driving the vehicle C. The driver temporarily stops, and operates the entering/exiting starting board 18 so as to close the exit gate 131. The driver confirms safety, and depresses the safety confirmation button 181. When the safety confirmation button 181 is depressed (YES in step S211), the controller 16 determines whether the vehicle C has finished exiting in accordance with a signal from the gate sensor 21 (step S212). When the vehicle has not yet finished exiting, sound instructing that the vehicle exit from the booth 7 is emitted inside the booth 7 (step S213), and the processing returns to step S211.

When it is determined that the vehicle C has finished exiting (YES in step S212), it is determined whether the human body sensor 20 has detected a person inside the booth 7 (step S214). When the human body sensor 20 detects a person inside the booth 7 (YES in step S214), sound instructing that the person exit from the booth 7 is emitted inside the booth 7 (step S215), and the processing returns to step S211. Stated another way, when a vehicle is detected by the gate sensor 21 (step S213) and when a person is detected by the human body sensor 20 (YES in step S109) after the safety confirmation button 181 has been depressed (YES in step S211), a user is made again to confirm safety and to depress the safety confirmation button 181.

The entering processing and the exiting processing according to the embodiment are processing performed under the assumption that a driver themselves issues an entering instruction and an exiting instruction, but the present invention is not limited to this. The entering/exiting starting board 18 may be operated by a dedicated operator. In this case, the flowcharts described above may be varied as needed.

The identification information stored in the parking ticket or the commutation ticket may be the number of a parking platform that is allocated to the parking ticket or the commutation ticket. The parking ticket and the commutation ticket are used as a storage medium that stores the identification information, as described above, but the storage medium does not always need to be in a form of a card such as a parking ticket or a commutation ticket, and may be in a form of electronic equipment such as a smartphone. In addition, a vehicle may be identified by using a license plate of the vehicle without using the parking ticket or the commutation ticket that serves as the storage medium. In this case, a camera is installed near the vehicle entrance 12, a license plate of a vehicle C is photographed, and image recognition is performed on a photographed image such that the number of the vehicle C can be recognized. Biological information, such as fingerprints or a face of a driver, may be used instead of the identification information.

(Communication Function)
The communication device 90 (see Fig. 5) performs various types of communication with external communication equipment via the Internet under the control of the controller 16. The underground car park 100 according to the embodiment has, in particular, a function of transmitting a report to a prescribed destination when abnormality has occurred in entering or exiting. The underground car park 100 according to the embodiment includes abnormality detection sensors (not illustrated) that detect abnormality in various places. The abnormality sensors are connected to the controller 16. When abnormality is detected according to the detection values of the abnormality sensors, the controller 16 transmits, via the communication device 90, a report indicating that abnormality has occurred.

The communication device 90 transmits the report indicating the occurrence of abnormality to the destination of an administrator of the underground car park 100. In addition, a periodic user can register a report destination at the time of registration, and the registered destination is stored in the storage 50 in association with the identification information of the periodic user. When the controller 16 can specify a vehicle or a parking platform 5 relating to abnormality in accordance with the abnormality sensors, the communication device 90 may transmit a report indicating the detection of abnormality to the destination of a corresponding periodic user that is acquired by referring to the storage 50.

The communication device 90 may be used for other purposes in addition to the reporting of the occurrence of abnormality. As an example, a user may be allowed to remotely make entering/exiting reservation in the communication device 90 by using communication equipment. The time needed after a user issues an exiting instruction and before the exit gate 131 is opened such that the user can get in a vehicle C may be reported from the communication device 90 to the communication equipment of the user.

(Construction Method)
Figs. 26 to 29 are diagrams illustrating an underground car park construction method according to the embodiment of the present invention. In order to construct the underground car park 100, first, a plurality of piles is arranged and are installed in the ground such that an outer shaft 1 having a cylindrical shape is formed from the ground to the underground, as illustrated in Fig. 26 (an installation step). A press-in machine 200 can be used to install piles. In particular, a press-in machine 200 can be used that acquires a reaction force from existing piles by clamping the upper portions of the existing piles using a clamping device and presses-in a new pile, and that installs a plurality of piles continuous to each other by moving in an existing pile place.

As a pile to be installed in order to configure a wall surface of the outer shaft 1, a U-shaped steel sheet pile, a hat-shaped steel sheet pile, a Z-shaped steel sheet pile, H-shaped steel pile, a steel pipe sheet pile, a steel pipe pile, or a concrete pile can be selected according to the height of the outer shaft 1 (the depth of the underground car park). A water cutoff material may be interposed between adjacent piles. As an example, by providing a packing in a joint portion of a steel sheet pile, water or earth and sand can be prevented from leaking from a gap between adjacent steel sheet piles. The water cutoff material stops water or retains earth, and water or earth outside the outer shaft 1 can be prevented from leaking into the outer shaft 1.

After the outer shaft 1 is formed by arranging a plurality of piles in a cylindrical shape and installing the plurality of piles, the inside of the outer shaft 1 is excavated, as illustrated in Fig. 27 (an excavation step). After earth and sand inside the outer shaft 1 is removed, concrete is poured into the inside the outer shaft 1 such that a basement slab is formed.

Then, in a space inside the outer shaft 1 that has been formed in the excavation step, a plurality of pillars is erected in order to form parking platforms 5 around the elevating/lowering path 8 located in the center, and plural stages of parking platforms 5 are formed radially around the elevating/lowering path 8, as illustrated in Fig. 28. In the elevating/lowering path 8, the elevating/lowering body 11 including the loading table 3, the conveyance device 6, the rotation device 10, and the elevating/lowering frame 9 is installed, and the elevating/lowering device 4 that elevates and lowers the elevating/lowering body 11 is further installed in a space surrounded by the parking platforms 5 (an external installation step).

When the construction of the outer shaft 1 is completed, the cover plate 2 is installed that covers an opening (at a ground level) in an upper portion of the outer shaft 1 (a covering step). The cover plate 2 is installed in a state in which a constant intensity is secured such that an entering/exiting vehicle can travel on the cover plate 2. In the center of the cover plate 2, a circular hole that the loading table 3 just fits is formed. When the elevating/lowering body 11 is elevated by the elevating/lowering device 4, the loading table 3 fits the circular hole so as to be located at the same level as the level of the cover plate 2. By doing this, a vehicle C travelling on the cover plate 2 can self-travel to the loading table 3. In addition, a driver can get in a vehicle C that has been loaded on the loading table 3 and has been elevated from a parking platform 5 under the ground, and the driver themselves can drive the vehicle C to the cover plate 2.

Then, the booth 7, which covers the hole formed in the cover plate 2, is installed on the ground, namely, on the cover plate 2, as illustrated in Fig. 29 (an external installation step).

In the example above, a wall surface of a columnar cavity serving as a housing section 20 is configured by press-in steel sheet piles or piles into the ground. Alternatively, in order to form the outer shaft 1 in a cylindrical shape, a cylindrical wall surface may be formed by excavating the underground, continuously arranging, in a depth direction and a circumferential direction, curved wall surface members that each have a prescribed height and a prescribed central angle so as to cover an inner wall of a columnar cavity formed as a result of excavation, and connecting the curved wall surface members. The curved wall surface members may be cladded of concrete, or other material. Alternatively, a wall of the outer shaft 1 may be formed by using cast-in-place concrete piles that are configured by forming a hole under the ground and pouring concrete into the hole.

(Variations)
The embodiment of the present invention has been described above. Various variations can be made to the embodiment described above.

Fig. 30 is a sectional view in a front direction of an underground car park in a variation of the embodiment of the present invention. In the embodiment described above, the elevating/lowering driving device 41, which elevates and lowers the elevating/lowering body 11, and the controller 16 are installed inside the outer shaft 1, namely, under the ground. By doing this, needed devices can be deployed while effectively utilizing an unused space under the ground, and there is an advantage wherein a larger available space can be secured on the ground. However, in a case in which these devices are located under the ground, when maintenance is performed on these devices or these devices are replaced, a worker needs to enter the underground, and this results in large-scale tasks.

In view of the foregoing, in an underground car park 100 in this variation, devices that can be installed on the ground, such as a portion of an elevating/lowering device 4 including an elevating/lowering driving device 41 or a controller 16, are installed in an upper portion of a booth 7 or in an attic of the booth 7. Part of or the entirety of the roof of the booth 7 is configured removably. Alternatively, the attic may be configured to be accessible from the inside of the booth 7. A wire 43 that is connected to the elevating/lowering driving device 41 is arranged via the inside of the wall of the booth 7 to the underground. By doing this, the elevating/lowering driving device 41 and the like can be easily accessed, and a larger available space can be still secured on the ground.

Fig. 31 and Fig. 32 are sectional views in a planar direction on the ground of underground car parks in variations of the embodiment of the present invention. In the embodiment described above, the vehicle entrance 12 and the vehicle exit 13 are formed in the booth 7 in such a way that the vehicle entrance 12 and the vehicle exit 13 are adjacent to each other and form an angle of 45 degrees, as illustrated in Fig. 4 In the example of Fig. 31, a vehicle entrance 12 and a vehicle exit 13 are formed in parallel on opposite sides with a booth 7 between them. In this example, an entering direction of a vehicle to the vehicle entrance 12 coincides with an exiting direction of the vehicle from the vehicle exit 13.

In this case, the entering/exiting starting board 18 according to the embodiment described above may be divided into an entering starting board 18a and an exiting starting board 18b, and the entering starting board 18a and the exiting starting board 18b may be installed near the vehicle entrance 12 and the vehicle exit 13, respectively, as illustrated in Fig. 31.

In Fig. 32, a single vehicle gateway that is used as both a vehicle entrance and a vehicle exit is provided in a booth 7. This example is effective in a case in which there is not enough space for a vehicle to run around the booth 7. As described above, in the underground car park according to the embodiment, the loading table 3 can be rotated by the rotation device 10. Therefore, an entering direction and an exiting direction of a vehicle can be set arbitrarily, and a vehicle entrance and a vehicle exit, or a vehicle gateway that are formed in an arbitrary direction can be dealt with.

In the embodiment described above and the examples of Fig. 31 and Fig. 32, basically, the booth 7 has a cylindrical shape, and a vehicle entrance and a vehicle exit that have a planar shape are provided. However, the shape of the booth 7 is not limited to this. As an example, the booth 7 may have a rectangular parallelepiped shape, or may have another shape. The pattern and color of the booth 7 may be designed so as to be in harmony with other booths surrounding the booth 7.

1 Outer shaft
3 Loading table
4 Elevating/lowering device
5 Parking platform
6 Conveyance device
7 Booth
8 Elevating/lowering path
9 Elevating/lowering frame
10 Rotation device
11 Elevating/lowering body
12 Vehicle entrance
13 Vehicle exit
16 Controller
17 Entering reception board
18 Entering/exiting starting board
19 Vehicle sensor
20 Human body sensor
21 Gate sensor
22 Locking device
23 Gate opening/closing device
50 Storage
90 Communication device
100 Underground car park

Claims

An underground car park comprising:
an outer shaft that is formed in a cylindrical shape from a ground to an underground;
a loading table;
an elevating/lowering device that elevates and lowers the loading table between the ground and the underground in a center inside the outer shaft;
a plurality of parking platforms that are hierarchically provided around an elevating/lowering path through which the loading table is elevated and lowered by the elevating/lowering device in the outer shaft;
a conveyance device that clamps and lifts wheels of a vehicle supported by the loading table or one of the plurality of parking platforms, and that conveys the vehicle between the loading table and the one of the plurality of parking platforms; and
a booth that is provided on the ground so as to cover at least the loading table located on the ground.
The underground car park according to claim 1, further comprising:
a rotation device that rotates the loading table, wherein
the booth includes an entrance and an exit.
The underground car park according to claim 1 or 2, wherein
the outer shaft is formed in a cylindrical shape by arranging a plurality of piles in a circular shape and installing the plurality of piles, and
the plurality of parking platforms is radially provided around the elevating/lowering path.
The underground car park according to any one of claims 1 to 3, wherein
each of the plurality of piles is a U-shaped steel sheet pile, a hat-shaped steel sheet pile, a Z-shaped steel sheet pile, H-shaped steel pile, a steel pipe sheet pile, a steel pipe pile, or a concrete pile.
The underground car park according to claim 3 or 4, wherein
the outer shaft is formed by interposing a water cutoff material between adjacent ones of the plurality of piles.
The underground car park according to claim 1, further comprising:
a rotation device that rotates the loading table, wherein
the loading table is circular, and
the plurality of parking platforms is radially provided around the elevating/lowering path.
The underground car park according to claim 6, wherein
a controller is provided among the plurality of parking platforms, the controller controlling the elevating/lowering device, the conveyance device, and the rotation device.
The underground car park according to claim 1, further comprising:
locking means that fixes the loading table that is located on the ground in a current position.
The underground car park according to claim 1, wherein
the conveyance device includes:
a set of bars that is provided for each of the wheels of the vehicle supported by the loading table or the one of the plurality of parking platforms, the set of bars abutting onto a lower half portion of a corresponding wheel from front and rear; and
a bar driving device that drives the set of bars between a retreat position and a restriction position with one end of each of the set of bars as a rotation center, the retreat position being a position in which the vehicle is not hindered from entering and exiting from the loading table, the restriction position being a position in which the vehicle is restricted from entering and exiting from the loading table.
The underground car park according to claim 9, wherein
the bar driving device includes a bar rotationally moving device that rotationally moves the set of bars between the retreat position and the restriction position with one end of each of the set of bars as a rotation center, and
the retreat position is a position in which the set of bars is parallel to a direction in which the vehicle enters the loading table and a direction in which the vehicle exits from the loading table, and the restriction position is a position in which the set of bars is perpendicular to the direction in which the vehicle enters the loading table and the direction in which the vehicle exits from the loading table.
The underground car park according to claim 9 or 10, wherein
bars that are located in a deepest position in the direction in which the vehicle enters the loading table are maintained in the restriction position, even when the vehicle enters the loading table.
The underground car park according to claim 1, wherein
a supporting member is provided at a distal end on a side of one of the plurality of parking platforms of the conveyance device, the supporting member preventing the conveyance device from hanging down, and
each of the plurality of parking platforms includes a receiving rail that support the supporting member from below when the conveyance device moves between the loading table and each of the plurality of parking platforms.
The underground car park according to claim 9, further comprising:
a sensor that detects wheels of a vehicle being entering the loading table, wherein
the bar driving device drives the set of bars in a direction in which the vehicle enters the loading table and a direction in which the vehicle exits from the loading table in accordance with detection of the wheels of the sensor.
The underground car park according to claim 13, further comprising:
a storage that stores an interval between the set of bars for a front wheel and the set of bars for a rear wheel at a time of entering of the vehicle in association with information that specifies the vehicle, an owner of the vehicle, or one of the plurality of parking platforms on which the vehicle will be parked.
The underground car park according to claim 1, wherein
at least a portion of the elevating/lowering device is installed under the ground.
The underground car park according to claim 1, wherein
at least a portion of the elevating/lowering device is installed on the ground.
The underground car park according to claim 16, wherein
at least a portion of the elevating/lowering device is installed in an upper portion of the booth, and
a roof of the booth is removable.
The underground car park according to claim 1, further comprising:
a controller, wherein
the booth includes:
an opening/closing device that opens or closes the booth; and
a sensor that detects a person, and
the controller controls the opening/closing device to close the booth under a condition where it is determined using the sensor that there is no person in the booth at a time of entering, and controls the elevating/lowering device and the conveyance device in such a way that a vehicle enters one of the plurality of parking platforms in a state in which the booth is closed.
The underground car park according to claim 18, further comprising:
an authentication device that authenticates identification information that specifies a vehicle, an owner of the vehicle, or one of the plurality of parking platforms, the authentication device being located outside the booth; and
a storage that stores the identification information authenticated by the authentication device in association with the one of the plurality of parking platforms, wherein
the controller controls the elevating/lowering device and the conveyance device in such a way that the vehicle enters the one of the parking platforms under a condition where the identification information has been authenticated by the authentication device at a time of entering.
The underground car park according to claim 19, wherein
at a time of exiting, the controller refers to the storage, specifies one of the plurality of parking platforms that corresponds to the identification information authenticated by the authentication device, and controls the elevating/lowering device and the conveyance device in such a way that a vehicle exits from the one of the plurality of parking platforms.
The underground car park according to claim 19 or 20, wherein
the authentication device reads the identification information from a storage medium that stores the identification information through short-range wireless communication, and authenticates the identification information.
The underground car park according to claim 1, further comprising:
an abnormality detector that detects abnormality in the underground car park; and
communication means that issues a report when the abnormality has been detected by the abnormality detector.
An underground car park construction method comprising:
an installation step of forming an outer shaft in a cylindrical shape from a ground to an underground by arranging a plurality of piles in the cylindrical shape and installing the plurality of piles into the ground;
an excavation step of excavating an inside of the outer shaft formed in the installation step;
an internal installation step of installing, in a space inside the outer shaft formed in the excavation step, a loading table, an elevating/lowering device that elevates and lowers the loading table between the ground and the underground in a center inside the outer shaft, a plurality of parking platforms that are hierarchically provided around an elevating/lowering path through which the loading table is elevated or lowered by the elevating/lowering device, and a conveyance device that clamps and lifts wheels of a vehicle supported by the loading table or one of the plurality of parking platforms, and that conveys the vehicle between the loading table and the one of the plurality of parking platforms;
a covering step of covering, at a level identical to the ground, an upper opening of the outer shaft excluding a hole that corresponds to the elevating/lowering path; and
an external installation step of installing, on the ground, a booth that covers at least the hole that corresponds to the elevating/lowering path, the hole being uncovered in the covering step.