JPH0378907B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention moves a large number of vehicle-mounted cages in a circular manner to store the vehicle, and the cages are opened from the bottom of the cage frame of the cages stopped at the vehicle entry area. This invention relates to an improvement in a recirculating mobile parking facility that lifts the chassis and turns the chassis so that vehicles can always be taken out of the garage in forward motion.

(Prior Art) The present applicant previously disclosed the above-mentioned circulating mobile parking facility in Japanese Patent Application Laid-Open No. 178760/1983. This parking facility is equipped with a movable elevating and rotating device in a pit below the vehicle entry area, and this movable elevating and rotating device moves in the direction of circular movement of the cage (i.e., in the direction perpendicular to the vehicle entry direction). a pair of front and rear carts that can be moved, an elevating frame attached to the cart so that it can be raised and lowered by an appropriate elevating device, and a revolving frame that is rotatably supported on the elevating frame about a vertical axis;
A cage position detector provided on the cart for aligning the vertical axis with the center of the cage, and a cage frame fixing device attached to the cart for fixing and holding the cage frame prior to lifting of the elevating frame. There is.

To explain the platform turning operation in this conventional parking equipment, the original position of the vehicle is at a place sufficiently shifted to one side from the center of the vehicle entry area, and two actuating cylinders are installed for each vehicle on the pit floor. Due to the synchronous drive of the two carriages, the lifting frame, etc. move toward the center of the vehicle entry area. During this movement, the limit switch of the cage position detector engages with the lower side of the cage frame of the cage that is stopped at the vehicle entry area, thereby stopping the movement of the cart and the like. Next, the cage frame fixing device is operated to integrate the cart and the cage frame. In this state, the elevating frame rises, and in the middle of the rise, the upper surface of the revolving frame comes into contact with the lower surface of the vehicle chassis, and the vehicle chassis is lifted upward from the lower part of the cage frame. Then, the direction of the chassis and the vehicle on the chassis is changed 180º by turning the swing frame 180º, and then the chassis is placed on the lower part of the cage frame by lowering the lifting frame.Then, the vehicle drives forward from the cage to the entrance/exit. The vehicle departs towards the destination and completes the delivery.

(Problems to be Solved by the Invention) The above-mentioned chassis turning operation can be summarized as: moving the cart, detecting the cage frame, fixing the cage frame and the cart, raising the elevating frame, turning the rotating frame, and lowering the elevating frame. It consists of sequential operation of each operation. The large number of individual movements required for chassis turning operation not only requires many drive sources and detectors, resulting in high equipment costs and a complex structure, but also requires a lot of effort to link them together. This means that the control becomes complicated and it takes a long time to turn the vehicle platform. In addition, since the movement of the cart is stopped using cage frame detection, in order to increase the positioning accuracy of the cart, it is necessary to slow down the movement speed of the cart.
Or the cart may be forced to stop suddenly. This sudden stop of the truck causes vibrations in the lifting frame and the rotating frame, which has an adverse effect on these structures.
Furthermore, in order to improve the positioning accuracy of the cart, it is better to install a driving source such as an actuating cylinder on the pit floor rather than making the cart self-propelled. This increases the amount of construction work and causes the cost of equipment to rise.

(Means for Solving Problems) The movable elevating and rotating device employed in the circulation mobile parking facility of the present invention is spaced apart from the front and rear of the vehicle entry direction, and is movable in the left and right directions perpendicular to the vehicle entry direction. It can be raised and lowered by a pair of carts installed in a pit on the ground floor, a vertical fixed guide cylinder installed at the left and right ends of each cart, and a lifting screw mechanism linked between the fixed guide cylinders. an elevating cylinder fitted into the fixed guide cylinder, an elevating drive mechanism that is linked to each of the elevating screw mechanisms and raises and lowers the elevating cylinder in the same elevating direction and at the same speed, and front, rear, left and right parts. a horizontal elevating frame integrally fixed to the elevating tube body;
A circular rotating body is supported in the center of the elevating frame so as to be horizontally rotatable about a vertical axis, and a circular rotating body is mounted and fixed on the upper surface of the circular rotating body, and when the elevating frame is raised, it comes into contact with the lower surface of the chassis, and the chassis is moved from the bottom of the cage frame. A rotating frame that is lifted upward, a rotational drive mechanism linked between the circular rotating body and the elevating frame, and a rotational drive mechanism linked to the rotating frame, and a rotational drive mechanism linked to the rotating frame, and a rotational drive mechanism linked to the rotating frame, and a rotational drive mechanism linked to the rotating frame, and a rotational drive mechanism linked to the rotating frame. Both were constructed with a trolley positioning and fixing device installed on one of the trolleys.

(Function) When the desired unloading cage reaches the lowest vehicle entry location and stops, first, the trolley positioning and fixing device operates to position and fix the trolley relative to the cage frame. At this time, the cart itself does not have a driving source for movement, and only the cart moves left and right relative to the heavy cage during positioning. Therefore,
Even if the cage shakes a little, the cart follows it, so the relative positional relationship between the cage and the cart remains unchanged.
Next, by the operation of the elevating drive mechanism, the elevating cylinder body rises using the fixed guide cylinder as a guide, and accordingly, the elevating frame and the rotating frame rise together.
During this upward movement, the upper surface of the abutment plate of the revolving frame collides with the lower surface of the vehicle chassis, and as the frame further rises, the vehicle chassis and the vehicle mounted on the chassis are lifted upward from the lower part of the cage frame. and the rotating frame
The 180° turn causes the chassis etc. to rotate 180°, with the front of the vehicle facing the entrance/exit. In this state, the elevating frame and the rotating frame are lowered, and the vehicle platform is again placed on the lower part of the cage frame. Finally, the operation of the trolley positioning and fixing device is released, and then the driver gets into the vehicle and drives forward to exit from the cage through the entrance and exit, completing the exit.

(Example) Hereinafter, an example in which a vertical circulation type parking system is adopted as a circulation mobile parking facility will be described in detail. For convenience of explanation,
The left and right in Figures 1 and 3 are "left" and "right",
The left and right sides in Figure 4 are called "front" and "back".

1 is a vertical circulation type parking facility with a bottom entry system installed in a building 2, in which two endless chains 5 are connected by upper and lower sprockets 3 and 4 arranged two each on the upper and lower sides.
is stretched, and a large number of vehicle W mounting cages 7 are suspended by an attachment 6 pivotally connected to the endless chain 5,
A driving source 8 connected to the upper sprocket 3 moves the cages 7 in a circular manner. Reference numeral 9 denotes an entry/exit entrance formed in the lowermost rear wall of the building 2.

The cage 7 has a pair of left and right support rods 7a extending in parallel in the front-rear direction, and a cage frame lower part 7b1 fixed to the front and rear ends of the support rods 7a, and the cage 7 has a structure in which the cage frame 7b1 is fixed to the front and rear ends of the support rods 7a, and the cage frame _7b1 is fixed to the front and rear ends of the support rods 7a. A pair of front and rear rectangular cage frames 7b tilted away from each other, and the tips of the two attachments 6 that interconnect the upper portions of the cage frames 7b and have front and rear protruding ends corresponding to the front and rear. The connecting rod 7c is pivotally connected to the rear end of the inverted L, which forms two elongated concave vehicle entrance ways _7d1 on the left and right sides in the longitudinal direction, and is fixed to the lower surface of the front and rear ends of each vehicle entrance way _7d1 . It consists of a chassis 7d on which a letter-shaped contact plate _7d2 is placed on the cage frame lower part _7b1 . 7e ₁ is the support rod 7
These are two positioning pins protruding from diagonal positions of a and 7a, which are fitted into the holes of two hole members _7e2 fixedly installed at diagonal positions on the lower surface of the vehicle base 7d when the vehicle base 7d is mounted.

Reference numeral 10 denotes a pit dug in the ground floor 11 of the building 2, and a moving lifting/lowering turning device for lifting and turning the cage 7 platform 7d by 180 degrees, which is to be stopped at the lowest vehicle entry area SP facing the entrance 9. 12 has been installed and consists of the following configuration.

That is, reference numerals 13 and 14 are front and rear carts separated from each other in the front and back that can freely move in the left and right directions on the floor of the pit 10, and each of the front and rear carts 13 and 14 has a cross section U.
It consists of a member elongated in the left and right direction of the shape, and a total of four wheels 15 and 16 are pivotally supported on the left and right front and rear surfaces, respectively.
Two protruding rails 17 of each of the track bodies 17 and 18 are laid in the left and right direction spaced apart from each other on the floor of the pit 10.
The wheels 15 and 16 are rotatably engaged with the wheels a and 18a, respectively.

19, 20, 21, and 22 are vertical fixed guide cylinders installed at the left and right ends of the front and rear bogies 13 and 14, respectively, and 23, 24, 25, and 26 are the fixed guide cylinders 19 and 26, respectively. The fixed guide cylinders 19, 2 are movable up and down via ring-shaped guide shoes GS which are mounted on the upper and intermediate parts of the outer circumferential surfaces of 20, 21 and 22.
0, 21, and 22, and the pair of fixed guide cylinders and lifting cylinders 19, 23, 20, and 2, respectively.
4, 21, 25, 22, and 26 are linked by ball screw mechanisms 27, 28, 29, and 30 having the same configuration. Representatively, the ball screw mechanism 27 for the fixed guide cylinder 19 and the elevating cylinder 23 will be explained with reference to FIG. That is, a flange 31 having a central hole 31a formed in the upper end opening of the lifting cylinder 23
I have fixed it. A long threaded rod 33 with a sprocket 32 fixed to its upper end is inserted into the central hole 31a, and the threaded rod 33 is inserted into a female ball screw body 34 fixedly installed inside the fixed guide cylinder 19 above.
A stepped flange 35 is fixed to the upper end of the male threaded portion 33a, and a bearing 36 is installed between the stepped flange 35 and the inner peripheral surface of the center hole 31a of the flange 31. Lifting cylinder body 2 interposed
3. The threaded rod 33 is rotatable with respect to the flange 35. Incidentally, the sprockets of the ball screw mechanisms 28, 29, and 30 corresponding to the sprocket 32 are designated by numerals 37, 38, and 39, respectively.

Reference numeral 40 denotes a rectangular horizontal lifting frame disposed between the four lifting cylinders 23 to 26, with vertical parts fixed to the left and right front end faces and left and right rear end faces, and the horizontal part above the upper surface of the lifting frame 40. Inverted L located at
Letter-shaped brackets 41, 42, 43, and 44 are fixedly installed, and the horizontal portions of the brackets 41 to 44 are placed on the upper surface of the flanges 31 of the corresponding lifting cylinders 23 to 26, respectively, and secured with bolts.

Reference numeral 45 denotes a circular rotating body disposed above the center of the lifting frame 40, which includes a vertical shaft 45a protruding from the center of the lifting frame 40, and a base rotating member supported by the vertical shaft 45a so as to be rotatable around the vertical axis L. 45b, four supporting members 45c of the same length protruding radially outward from the base rotating member 45b,
A circular track 45d with a U-shaped cross section whose inner surface is fixed to the outer end surface of the support member 45c, and a shaft mounted on the lifting frame 40 so as to rollably contact the lower surface of the circular track 45d and support the circular track 45d from below. The circular track 45d consists of a supporting member 45c and a base rotating member 45b.
It can be freely rotated around the vertical axis L through the vertical axis L.

Reference numeral 46 denotes a rectangular rotating frame elongated in the front and rear direction with left and right center portions fixed to the left and right upper surfaces of the circular track 45d, and a contact plate 46a made of rubber material on the upper surfaces of the front, rear, left and right four corners. is fixedly installed, and the chassis 7d
When lifted, it collides with a contact plate 7f protruding from the lower surface of the chassis 7d. Further, on the front left part and the rear right part of the rotating frame 46, positioning pins 46b tapered upward diagonally with respect to the vertical axis L,
46b is provided protrudingly. This positioning pin 46b
These are inserted into two hole members 7g fixedly installed at diagonal positions on the lower surface of the chassis 7d just before the chassis 7d is lifted.

Reference numeral 47 denotes an elevating drive mechanism for the elevating cylinder bodies 23 to 26 and the elevating frame 40, and a reversible motor 49 and a reduction gear with a brake 50 connected to the motor 49 are installed on a frame 48 fixed to the inside of the front part of the elevating frame 40. , a drive sprocket 51 is fixed to the upward output shaft of the reducer 50. 52
is an endless chain, which includes the drive sprocket 51 and the four sprockets 32, 37, 38, 3.
9 and a guide sprocket 53 which is pivotally supported on the frame 48. However, the motor 49
The driving sprocket 51 rotates, thereby the endless chain 52 circulates in one direction, and the threaded rods 33 of the ball screw mechanisms 27, 28, 29, 30 are connected to the same threaded rods 33 of the ball screw mechanisms 27, 28, 29, 30 through the sprockets 32, 37, 38, 39, respectively. As a result, the elevating cylinders 23, 24, 25, 26 move up and down in the same up and down direction and at the same speed using the fixed guide cylinders 19, 20, 21, 22 as guides. The frame 40 moves up and down in a horizontal state.

Reference numeral 54 denotes a rotational drive mechanism for the circular rotating body 45 and the rotating frame 46;
A reversible motor 56 is mounted on a pedestal 55 fixed inside the rear part of the
and a reducer 57 with a brake connected to the motor
A drive sprocket 58 is fixed to the upward output shaft of the reducer 57. 59 is an endless chain for rotation, which is wound around the drive sprocket 58 and the guide sprocket 60 which is pivotally supported on the pedestal 55, and is further wound around the outer peripheral surface of the circular orbit 45d, and is wound around the right outer peripheral surface of the circular orbit 45d. In the figure, only one portion of the endless chain 59 is fixed to the circular track 45d by a fastener 61.

Reference numeral 62 denotes a truck positioning and fixing device installed on the rear truck 14 and has the following configuration. 63 is rear truck 1
A pair of left and right Ls are fixedly installed on the left side of 4, spaced apart from each other.
64 is a pair of horizontal members protruding backward horizontally from the upper part of the vertical part of each mount 63; 65 is a connecting member connecting the rear ends of both horizontal members 64; 66 is the rear surface of the connecting member 65. With one support roller pivoted in the center,
It is rotatably engaged on a short guide rail 67 laid horizontally on the left and right sides of the rear wall of the pit 10.
Reference numeral 68 denotes a pair of vertical brackets erected at the front and rear ends of each of the horizontal members 64, and both brackets 68
A guide round rod 69 is installed horizontally in the front-rear direction between the upper portions of the guide rods. 70 is a horizontal movable plate, the bottom front/rear,
Four guide rollers 71 are pivotally supported on the left and right sides, and the V-shaped circumferential surfaces of the two guide rollers 71 on the left and right sides are attached to the guide round bars 69 on the left and right sides so that they cannot fall off vertically and can freely roll in the front and back direction. It is engaged with. 72 is both horizontal members 6
4, the tip of a rod 72a extending horizontally to the rear is pivotally connected to the lower part of a driven member 73 that is vertically disposed on the lower surface of the rear end of the moving plate 70.
The movable plate 70 is moved back and forth by the expansion and contraction operation of a. Reference numeral 74 denotes a vertically elongated driven roller rotatably supported around a vertical axis on the central upper surface of the rear end of the movable plate 70, and 75 denotes a lower part of the cage frame _7b1 of each cage 7. A V-groove 75 of the positioning member 75 of the cage 7 allows the movable plate 70 to stop at the vehicle entry area SP facing the entrance/exit 9 when the movable plate 70 moves backward.
The driven roller 74 is fitted into and engaged with the driven roller 74.

Reference numerals 76 and 77 are movable decks installed on the left and right ground floor 11 with the pit 10 in between.Since both movable decks 76 and 77 are symmetrical and have the same configuration, only the right movable deck 77 will be explained, and the relevant parts will be explained below. Attach the same symbol. 78 is a horizontal deck that is slightly longer than the length of the pit 10 in the longitudinal direction, and is movable left and right but not vertically movable by a group of support rollers 79 that are supported on the ground floor 11 in multiple rows in the front and back, and at least two in each row on the left and right. The cage 7 is supported at a height such that it is flush with the upper surface of the right side of the chassis 7d of the cage 7 that is stopped at the vehicle entry area SP. 80 is ground floor 1
The driven material 8 is an actuating cylinder installed in a recess 11a in the center in the front-rear direction of the driven material 8, and the tip of a rod 80a extending horizontally to the left is suspended from the lower surface of the front of the deck 78.
The deck 78 is pivotally connected to the lower part of the rod 80a, and the deck 78 is moved in the left-right direction by the expansion and contraction movement of the rod 80a. 82 is a limit switch fixed to the lower surface of the front end of the deck 78, and when the deck 78 moves to the left, a detection rod 82a engages with the right edge of the chassis 7d and sends a signal to stop the driving of the operating cylinder 80. As a result, the deck 78 is placed very close to the right side of the vehicle chassis 7d.

83 is a door provided at the entry/exit port 9.

Next, the function of the parking facility will be explained.

Now, in the initial state of the parking facility, the door 83 is closed, the entrance/exit 9 is closed, and the cages 7 have stopped circulating. The movable lifting and turning device 12 is a second,
The state is as shown by the solid line in Figures 3 and 4. That is,
The front and rear trucks 13 and 14 are stationary at the center position in the left-right direction. Even if the elevator frame 40 etc. moves in circulation, the lower part of each cage 7 is the rotating frame 4.
It is in the lowest position where it will not collide with the 6th magnitude.

When you want to leave the warehouse, press the car call button corresponding to the number of the desired cage 7 on the control panel (not shown) installed outside the entrance 9, and the group of cages 7 will be circulated by the drive source 8. , the cage 7 carrying the vehicle W that is about to leave the garage reaches the vehicle entrance area SP in front of the entrance 9 and stops.
At this time, the vehicle W is still in a state with its front portion facing forward, that is, in a state facing backward with respect to the entrance/exit 9. After that, the following operations occur in sequence.

(1) First, the trolley positioning and fixing device 62 is activated. That is, the moving plate 70 and the driven roller 74 are moved by the extending action of the rod 72a of the operating cylinder 72
moves backwards. During this movement, the driven roller 74 moves to the V groove 7 of the positioning member 75 of the cage 7.
5a. If the center of the cage 7 is deviated from the center of rotation of the rotating frame 46, that is, the vertical axis L, the movable lifting/lowering rotating device 12
is centered by moving the front and rear carts 13 and 14 left and right, and the driven roller 74 is aligned with the V-groove 7.
When the rod 72a is inserted and engaged with the innermost part of the rod 5a, the aforementioned extending operation of the rod 72a is stopped, and the front and rear bogies 13,
The positioning and fixing of No. 14 to the cage frame 7b is completed.

(2) Next, the elevating drive mechanism 47 operates. At the same time as the brake of the reducer with brake 50 is released, the motor 4
9 is driven, and the endless chain 52 circulates in one predetermined direction. This allows sprocket 32,3
7, 38, and 39 are rotated in the same direction and at the same speed, and the elevating cylinder body 2 is rotated through each ball screw mechanism 27 to 30.
3, 24, 25, and 26 are fixed cylinder bodies 1, respectively.
9, 20, 21, and 22 as guides and ascend at the same speed. Therefore, the elevating frame 40 rises while remaining in a horizontal state. During this ascent, the two positioning pins 46b, 46b on the rotating frame 46
is inserted into the two hole members 7g on the underside of the chassis 7d,
The rotation frame 46 is positioned with respect to the chassis 7d. As the elevating frame 40 further rises, the four contact plates 46a on the rotating frame 46 collide with the contact plate 7f on the lower surface of the vehicle platform 7d, thereby lifting the vehicle platform 7d. Then, the hole member 7e ₂ is removed upward from the positioning pin 7e ₁ on the cage frame 7b side, and the inverted L-shaped contact plate 7d ₂ is further removed from the cage frame lower part 7.
The above-mentioned rising operation stops when it is completely separated upward from b ₁ .

(3) Subsequently, the rotational drive mechanism 54 is activated. Simultaneously with the release of the brake of the brake-equipped speed reducer 57, the motor 56 is driven, and the endless chain 59 circulates in the counterclockwise direction in FIG. At this time, one part of the endless chain 59 is fixed to the circular track 45d by the fastener 61, so that the circular rotating body 45, the rotating frame 46, the chassis 7d,
The mounted vehicle W then turns around the vertical axis L in a counterclockwise direction. And exactly
After turning 180 degrees, the motor 56 stops driving. The front part of the loaded vehicle W is now in a state pointing rearward, that is, toward the entrance/exit 9 (see FIG. 7).

(4) Then, the elevating drive mechanism 47 operates again.
By driving the motor 49 in the opposite direction, the elevating frame 40, the rotating frame 46,
The chassis 7d and the loaded vehicle W are lowered together. During this lowering, the hole member 7e ₂ and the positioning pin 7e ₁ are fitted into engagement, and the chassis 7d is positioned and placed on the cage frame lower part 7b ₁ again.

(5) After that, the rod 72 of the operating cylinder 72
Due to the shortening operation a, the movable plate 70 and the driven roller 74 move forward, and the driven roller 74 completely separates from the positioning member 75 forward, releasing the operation of the carriage positioning and fixing device 62.

(6) Left and right moving decks 76 and 77 operate,
The left and right decks 78, 78 move in left and right opposite directions, and both decks 78, 78 move to the left and right of the chassis 7d.
It stops flush with the right side.

(7) Finally, the door 83 opens and the driver enters the entrance 9.
The driver then enters the tower and boards the vehicle W through the deck 78, and as the vehicle W is driven forward, the vehicle exits from the cage 7 via the ground floor 11 and exits through the entry/exit port 9.
After the vehicle W leaves the garage, the door 83 is closed again.

Incidentally, at the time of storage, the movable elevating and rotating device 12 is not operated at all, and only the movable decks 76 and 77 need be driven. Of course, the movable decks 76, 77
It may be a vertically swinging type, or it may be a fixed deck 176, 17 as shown by the two-dot chain line in Fig. 3, although there is a slight difference in level from the chassis 7d, making it inconvenient to get on and off.
It may be set to 7. Furthermore, the aforementioned bogie positioning and fixing device 62 may also be installed on the front bogie 13.

(Effects of the Invention) As explained above, the movable elevating and rotating device provided in the parking facility of the present invention includes a pair of freely movable carts,
Two fixed guide cylinders installed upright on each trolley, an elevating cylinder fitted into each fixed guide cylinder via a ball screw mechanism, an elevating frame fixed to these elevating cylinders,
It consists of a circular rotating body supported on this elevating frame, a rotating frame placed and fixed on this circular rotating body, a bogie positioning and fixing device installed on at least one of the bogies, etc. Since the three sequential operations of detecting the cage frame and fixing the cage frame are performed in one operation of the vehicle positioning and fixing device, the time required for unloading operations including lifting and turning the vehicle chassis can be significantly shortened. Because there is no drive source such as
On-site construction work for the movable lifting/lowering turning device can be almost eliminated, equipment costs can be reduced, and installation work is easy and requires only assembly work, and the construction period can be shortened.

[Brief explanation of drawings]

The drawings all show one embodiment of the present invention, and Fig. 1 is an overall front cross-sectional view of a circulating mobile parking facility, Fig. 2 is an enlarged side view taken in the direction of the ~ arrow in Fig. Figure 2 is a front view from the − arrow direction, and Figure 4 is the
Figure 5 is a plan view as seen from the arrows in Figure 2.
FIG. 6, which is an enlarged vertical cross-sectional view in the direction of arrows, is an explanatory view of the operation corresponding to FIG. 2 immediately after the vehicle platform turns. In the figure, 7 is a cage, 7b is a cage frame, _7b1 is a lower part of the cage frame, 7d is a chassis, 9 is an entrance/exit, 10 is a pit, 12 is a movable lifting/lowering rotating device, 13 and 14 are carts, and 19 to 22 are Fixed guide cylinder, 23 to 2
6 is an elevating cylinder, 40 is an elevating frame, 45 is a circular rotating body, 46 is a rotating frame, 62 is a trolley positioning and fixing device, and W is a vehicle.

Claims (1)

[Claims] 1 A large number of vehicle mounting cages are circulated and moved as if storing vehicles, a vehicle platform is placed on the bottom of the cage frame of each cage so that it can be pulled out upwards, and a moving lifting/lowering swivel device is installed in the bottom ground floor pit. In the circulating mobile parking facility, the mobile lifting/lowering turning device includes:
A pair of bogies installed on the floor of the pit so as to be spaced apart from each other in front and behind the vehicle entry direction and movable in left and right directions perpendicular to the vehicle entry direction, and a vertical platform provided at the left and right ends of each of the bogies a fixed guide cylinder, an elevating cylinder fitted into the fixed guide cylinder such that it can be raised and lowered by an elevating screw mechanism linked to the fixed guide cylinder, and an elevating cylinder linked to each of the elevating screw mechanisms. A lifting drive mechanism that raises and lowers the body in the same lifting direction and at the same speed, and
At the rear, a horizontal elevating frame whose left and right parts are integrally fixed to the elevating cylinder, a circular rotating body supported at the center of the elevating frame so as to be horizontally rotatable around a vertical axis, and a top surface of the circular rotating body. a rotating frame that is placed and fixed and comes into contact with the lower surface of the vehicle chassis when the elevator frame is raised, and lifts the vehicle chassis upward from the lower part of the cage frame; and a rotational drive mechanism that is linked between the circular rotating body and the elevator frame. and a bogie positioning and fixing device installed on at least one of the bogies to position and fix the vehicle platform relative to the cage frame prior to the lifting operation of the bogie. .