JP2937991B1 - Carriage transport trolley - Google Patents

Abstract

An object of the present invention is to provide a transportation vehicle capable of reducing vibration during traveling. SOLUTION: A transport trolley 1 carrying a load 60 and traveling on a transport path 55 via wheels 5 includes a frame 2 supporting mounting portions 20 and 40 on which the load 60 is mounted, and an axle 9 of wheels 5. It is characterized by comprising a bearing portion 6 to be supported and an elastic member 10 having one end fixed to the frame 2 and the other end fixed to the bearing portion 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport trolley, and more particularly to a transport trolley applied to a multistory parking lot or the like.

[0002]

2. Description of the Related Art Conventionally, techniques in such a field include:
Japanese Unexamined Utility Model Publication No. 6-40284 discloses a vehicle disclosed in Japanese Utility Model Laid-Open Publication No. 6-40284, which is applied to a multistory parking lot. The transport vehicle includes a plurality of wheels that roll on guide rails provided on a transport path, and moves with a vehicle mounted between an entrance / exit port and a parking section. The front wheels of the vehicle are supported by a front-wheel traverse conveyor provided on the transport trolley, and the rear wheels of the vehicle are supported by a rear-wheel traverse conveyor. Each of these conveyors is a roller conveyor driven by a motor in a direction perpendicular to the traveling direction of the transport vehicle (left and right of the transport vehicle).

[0003] When a vehicle is transferred between a transport trolley and an entrance / exit port or each parking section, both conveyors are operated simultaneously by rotating the motor forward or backward. Further, a front wheel locking means for locking the front wheels of the automobile is provided on the front-wheel traverse conveyor. The front wheel locking means slides two wheel holding members formed in a wedge-shaped cross section independently from the front and rear of the front wheel, and holds the front wheel of the vehicle between the two wheel holding members. Thereby, when the transport vehicle carrying the vehicle moves from the entrance / exit port to the parking section, it is possible to restrict the vehicle from moving in the front-rear direction on the transport vehicle.

[0004]

However, the conventional carrier has the following problems because it is configured as described above. That is, since the transport vehicle travels on the transport path via the wheels, vibration occurs due to rolling of the wheels, or vibration occurs when the wheels cross over the joints of the guide rails. However, in many cases, no measures have been taken to prevent vibrations on the transport trolley, and even if any measures have been taken, the effect has been insufficient. Therefore, the vibration generated in this manner is transmitted to the transported goods and the building provided with the transport cart. Eliminating the problem of the vibration is particularly important for a transport trolley that carries a heavy object and moves at high speed, such as a transport trolley applied to a multistory parking garage.

Accordingly, an object of the present invention is to provide a transport trolley capable of reducing vibration during traveling.

[0006]

According to a first aspect of the present invention, there is provided a transporting vehicle according to the present invention, which is applied to a parking lot and is capable of traveling on a transporting path via wheels in a state where an automobile as a load is mounted. In the transport trolley, a frame that supports a mounting portion on which an automobile is mounted, a bearing portion that supports an axle of wheels,
An elastic member having one end fixed to the frame and the other end fixed to the bearing portion is provided.

In this transport trolley in a parking lot, a frame for receiving a load of an automobile as a load and a bearing for supporting an axle are connected via an elastic member. As a result, vibration generated due to rolling of the wheel and vibration generated when the wheel crosses the joint of the guide rail is absorbed by the elastic member functioning as a suspension. Therefore, the vibration generated during the traveling of the transport trolley is reduced, and as a result, the vibration transmitted to the transported article and the building of the parking lot provided with the transport trolley can be reduced. This transport trolley is, for example, a complex commercial facility or condominium where restaurants and concert halls are assembled.
It is effective when applied to buildings where vibration is a problem. That is, since a means for reducing vibration is provided in the transport vehicle itself, it is not necessary to take measures to prevent vibration such as a so-called floating floor structure on the building side, and the building cost can be reduced.

In this case, it is preferable that the elastic member has an upper end fixed to the frame and a lower end fixed to the bearing portion. In such a configuration, the weight of the mounting part and other peripheral devices supported by the frame and the weight of the conveyed goods all act as sprung weights, so vibrations must be suppressed very effectively. Can be.

Preferably, an air spring is used as the elastic member. By employing such a configuration, control of the elastic member functioning as a suspension is facilitated.
If a coil spring is used as the elastic member, the mechanism for preventing vibration can be formed as a simple and inexpensive mechanism.

Further, it is preferable to provide a vehicle height adjusting mechanism for determining the frame height in the bearing portion. As the vehicle height adjustment mechanism, the frame height is determined by raising the frame against the biasing force of the elastic member, or the frame height is determined by lowering the frame against the biasing force of the elastic member It is good to use the mechanism which performs. Thereby, it becomes easy to mount a conveyed object on the transport trolley or to unload the conveyed object from the transport trolley. For example, when this transport trolley is applied to a multi-story parking lot, it is necessary to transfer the vehicle between the transport trolley and the entrance / exit or the parking section. Adjust the height of the
It becomes easy to make the height of the transporting cart coincide with the entrance / exit opening or parking section.

In the case where an air spring is used as the elastic member, it is preferable to provide a vehicle height adjusting stopper for determining the height of the frame in the bearing when the air spring is contracted. . Under such a configuration, the frame can be positioned in the height direction only by lowering the frame by contracting the air spring. Further, the vehicle height adjusting mechanism can be formed extremely simply.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a carrier according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view showing an example of a multi-story parking lot to which a carrier according to the present invention is applied. An entry / exit port 51 for an automobile 60 (see FIG. 9) to enter / exit is provided on the entry / exit floor of the multi-story parking lot 50 shown in FIG. An elevator 52 is arranged beside the entrance / exit port 51,
The car 60 that has entered the entrance / exit 51 is transferred to the elevator 52. A conveyor 51 composed of a slat conveyor, a roller conveyor or the like for supporting a front wheel 61 and a rear wheel 62 of an automobile 60 is provided at the entrance / exit port 51 and the elevator 52.
a and 52a are arranged side by side in two rows. Access port 51
Delivery of the vehicle 60 between the vehicle and the elevator 52 is performed by operating these conveyors 51a and 52a. The car 60 is transported by the elevator 52 between the entrance / exit and the parking floor.

On each parking floor, there are provided a plurality of parking sections 53 for accommodating the automobiles 60.
Is transported to a predetermined parking section 53. On each parking floor of the multi-story parking lot 50, two parking section rows 54 in which parking sections 53 are arranged side by side are provided in parallel. The automobiles 60 are accommodated in the respective parking sections 53 in a state of being connected to each other in front and rear. In each parking section 53, two rows of conveyors 53a are arranged side by side. When the vehicle 60 is transferred between the transport vehicle 1 and each parking section 53, these conveyors 53a are operated.
A transport path 55 serving as a travel path of the transport trolley 1 is formed between the two parking section rows 54 provided in parallel. In the transport path 55, two guide rails 56 are laid in parallel, and the transport trolley 1 is mounted on the parking section 5 along the guide rails 56 in a state in which an automobile 60 as a load is mounted.
3 can be moved in the juxtaposed direction (first direction).

As shown in FIG. 1, the carriage 1 is equipped with a slat conveyor 20 and a roller conveyor 40 which are driven in a direction (second direction) orthogonal to the traveling direction. Slat conveyor 20 and roller conveyor 4
0 are on the same plane, and the car 60
A front wheel 61 is supported by the slat conveyor 20 and a rear wheel 62
Are mounted on the carrier 1 while being supported by the roller conveyor 40. That is, the slat conveyor 20 and the roller conveyor 40 function as a mounting portion on which the automobile 60 as a conveyed object is mounted. Carriage 1 and elevator 52
Alternatively, when the vehicle 60 is delivered to and from each parking section 53, the conveyor 52a of the elevator 52 or the parking section 5
The third conveyor 53a is operated, and at the same time, the slat conveyor 20 and the roller conveyor 40 are operated. Thereby, the transport trolley 1 can transfer the automobile 60 as a transported object to each of the parking sections 53 and the elevators 52 arranged on the left and right.

The slat conveyor 20 and the roller conveyor 40 are fixed to the frame 2 of the carrier 1 as shown in FIG. As shown in the figure, the frame 2 includes two vertical frame members 3 extending in parallel with each other on the same plane, and two horizontal frame members 3 fixed to the front end and the rear end of each vertical frame member 3. It is composed of a frame member 4 and a reinforcing frame (not shown), and is configured as a rectangular frame. The vertical frame member 3 and the horizontal frame member 4 are made from a long square pipe. In addition, each vertical frame member 3
, A bearing portion 6 for supporting the wheel 5 is arranged one by one in the front and rear. Therefore, the bearings 6 are arranged at the four corners of the frame 2.

As shown in FIG. 3, the wheel 5 comprises a metal wheel 5a and a urethane tire 5b mounted around the wheel 5. By providing the urethane tire 5b, transmission of the generated vibration to the building or the like of the multi-story parking lot is mitigated. The wheels 5 disposed at the rear of the transport vehicle 1 are driven by a traveling drive unit 16 installed on a base plate passed between the left and right vertical frame members 3. As a result, the transport vehicle 1 mounts the automobile 60 on the slat conveyor 20 and the roller conveyor 40 as mounting units, and the multi-story parking lot 50 is mounted via the four wheels 5.
Can travel on a guide rail 56 laid on the transport path 55 of the vehicle.

The bearing 6 includes a bearing frame 7 having a U-shaped cross section, as shown in FIG. The bearing frame 7 is arranged with the opening facing upward. An axle 9 is mounted on the upper part of the bearing frame 7 via a bearing 8.
Are rotatably supported. The wheel 5 is fixed to an end of the axle 9. Inner surface of the side wall of the bearing frame 7,
The vertical frame member 3 is inserted into a space partitioned by the inner surface of the bottom wall and the bearing 8 (axle 9). At both end sides of the vertical frame member 3, the bottom wall is removed over a predetermined region, and the portion from which the bottom wall is removed is disposed in the bearing frame 7 as shown in FIG. 3.

The vertical frame member 3 is connected to a bearing frame 7 of each bearing 6 via an air spring 10 as an elastic member. This air spring 10
It is a step bellows type air spring. The air spring 10 is inserted into the vertical frame member 3 from a portion where the bottom wall of the vertical frame member 3 is removed. The upper end of the air spring 10 is fixed to the inner surface of the upper wall of the vertical frame member 3. The lower end of the air spring 10 is fixed to the inner surface of the bottom wall of the bearing frame 7 via the pedestal 11. The air spring 10 is connected to the preload chamber 13 via an air control valve or the like. As shown in FIG.
The preload chamber 13 is housed inside the vertical frame member 3 between the front and rear bearings 6. In addition, related devices (not shown) such as an air compressor for supplying air are fixed on a base plate extending between the left and right vertical frame members 3. Further, an air release valve (not shown) is attached to the air spring 10.

When the carrier 1 travels, the preload chamber 1
Air is supplied from 3 to extend the air spring 10. At this time, the vertical frame member 3 is, as shown in FIG.
The bearing frame 7 rises from the inner surface of the bottom wall. In this case, the weight of the slat conveyor 20 and other peripheral devices supported by the frame, the weight of the automobile 60, and the like all act on the air cylinder 10 as sprung weights. The generated vibration can be suppressed very effectively. It is sufficient that the stroke of the air spring 10 is about 30 mm.

On the other hand, when the air release valve is opened and the air cylinder 10 is completely contracted, the vertical frame member 3 descends, and its bottom surface is formed on the shoulder of the pedestal 11, as shown in FIG. Abuts on the upper surface of the vehicle height adjustment stopper 12. The vehicle height adjusting stopper 12 is formed by lowering the shoulder of the pedestal 11 by one step, and can be formed extremely easily. The upper surface of the vehicle height adjustment stopper 12 and the bearing frame 7
Are lower than the height of the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40 and the height of the conveyor surfaces of the elevator 52 and the parking space 53 when the vertical frame member 3 is completely lowered. Are determined to match.

As a result, when the air spring 10 is contracted, the frame 2 is positioned in the height direction, and at the same time, the slat conveyor 20 and the roller conveyor 40 fixed to the frame 2 are also positioned in the height direction. Therefore, when the vehicle 60 is transferred between the transport trolley 1 and the elevator 52 or the parking space 53, the height of the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40 and the height of the conveyor surfaces of the elevator 52 and the parking space 53 Can be easily and reliably matched. The bearing frame 7 may be used as the vehicle height adjustment stopper 12. In this case, when the air spring 10 is contracted to bring the bottom surface of the vertical frame member 3 into contact with the inner surface of the bottom wall of the bearing frame 7, the height of the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40, the height of the elevator 52 The air cylinder 10 and the like may be arranged so that the height of the conveyor surface of the parking section 53 matches the height of the conveyor section.

As described above, in the transport vehicle 1, the frame 2 that receives the load such as the load and the bearing 6 that supports the axle 9 are provided.
Are connected via an air spring 10 as an elastic member. Therefore, the vibration generated due to the rolling of the wheel 5 and the vibration generated when the wheel 5 gets over the seam of the guide rail 56 are absorbed by the air spring 10 functioning as a suspension. Therefore, the vibration generated when the transport trolley 1 travels is reduced, and as a result, the vibration transmitted to the vehicle 60 as a transported object and the building of the multi-story parking lot 50 provided with the transport trolley 1 can be reduced. . Further, since the air spring 10 is used as the elastic member functioning as a suspension, the control thereof is easy.

As shown in FIG. 5, a coil spring 14 may be used as the elastic member. Thereby, the mechanism for preventing vibration can be formed as a simple and inexpensive mechanism. In this case, as shown in the drawing, an air cylinder 15 may be provided inside the coil spring 14 as a vehicle height adjusting mechanism for determining the frame height. In this case, the height of the frame may be determined by raising the vertical frame member 3 against the urging force of the elastic member by the air cylinder 15. The frame height may be determined by descending against the urging force of the member.

Even with such a configuration, when the vehicle 60 is transferred between the transport vehicle 1 and the elevator 52 or the parking space 53, the height of the transport vehicle 1 and the height of the elevator 52 or the parking space 53 are increased. It is easy to match the sizes. Note that, instead of the air cylinder 15, a hydraulic cylinder or a device driven by a motor may be used. Further, even when the air spring 10 is used as the elastic member, a vehicle height adjusting mechanism using such an air cylinder, a hydraulic cylinder or the like is provided in the bearing 6, and the vertical frame member 3 is biased by the elastic member. The height of the frame is determined by raising it against the vertical frame member 3.
May be determined against the urging force of the elastic member to determine the frame height.

Next, a description will be given of the slat conveyor 20 according to the present invention, which is mounted on the transport vehicle 1.

As shown in FIG. 6, the slat conveyor 20 includes an endless chain 24 circulated by a sprocket 23 and a plurality of slat members 30 and 31 continuously attached to the endless chain 24. The sprocket 23 is attached to a drive shaft and a driven shaft (neither is shown) supported by mutually facing conveyor frames 21 and 22 formed of channel members. The endless chain 24 includes a chain guide 2 fixed inside the conveyor frames 21 and 22.
1a and 22a (see FIG. 8), and are spun and driven by rotating a sprocket 23 attached to a drive shaft by a conveyor drive unit 29 including a motor, a speed reduction mechanism, and the like. Note that the conveyor driving section 29 is fixed on a base plate provided between the slat conveyor 20 and the roller conveyor 40.

As shown in FIG. 7, the endless chain 24 is a roller chain in which roller links 25 and pin links 26 are connected alternately and continuously. As shown in the drawing, attachments 2 for attaching slat members 30, 31 are provided on inner link plates 25a, 26a forming roller links 25 and pin links 26.
5b and 26b are formed. This attachment 2
5b and 26b are formed by extending the center of the bottom of the link plates 25 and 26 and bending the extended portions at right angles. Therefore, the inner link plates 25a and 26a have an L-shaped cross section.

The slat members 30, 31 are attached to the mounting bolt 2
8a and the inner link plate 2 via the nut 28b
5a, 26a are fixed to the attachments 25b, 26b. As shown in FIG. 2 and FIG.
Are fixed to the endless chain 24 in a state where they are separated from each other at a predetermined interval. That is, the slat conveyor 20 is provided with every third slat member 31. Therefore, between the two slat members 31, 2
The number of slat members 30 will be arranged.

As shown in FIG. 7, the slat members 30, 3
1 is made from a long square pipe. The overall length of the slat members 30, 31 is set to be somewhat longer than the outer diameter of the front wheel 61 so that the front wheel 61 of the automobile 60 can be supported with a margin. Also, the slat member 30,
For example, the width of the slat member 31 is determined such that the width of the four slat members 30, 31 corresponds to the width of the front wheel of a general automobile 60. The upper surface of the slat member 30 is
The transported object mounting surface 30a on which the front wheel 61 is mounted.
Similarly, the upper surface of the slat member 31 is also attached to the front wheel 6 of the automobile 60.
The slat member 31a is further provided with a rectangular opening 31b in the slat member 31a. The opening 31b has one end at one end and the other end in the longitudinal direction of the slat member 31.
Each is provided.

Each of the slat members 31 is provided with two stopper members 32 which can protrude from the conveyed object mounting surface 31a through the opening 31b and function as a car stop for the vehicle 60 mounted on the carrier 1. Can be The stopper member 32 is formed from a short square pipe as shown in FIG.
1b is set slightly shorter than the opening length, and the entire width is equal to the opening 3
The opening height of the slat member 31 is set slightly shorter than the opening width of the slat member 31. Also, mounting holes 32a are provided on both side surfaces of the stopper member 32.
Are drilled. The stopper member 32 is housed inside the slat member 31 via the opening 31. And
The mounting shaft 34 is inserted through the mounting hole 32 and the mounting hole 31c formed at a predetermined interval near the center of the slat member 31. The mounting shaft 34 extends in the transport direction of the vehicle 60, that is, in the operation direction of the slat conveyor 20. Thereby, the stopper member 32 is rotatably supported by the slat member 31 via the mounting shaft 34.

Further, the stopper member 32 is provided with a driven leg 33 constituting a lift mechanism 35 for protruding the stopper member 32 upward from the load carrying surface 31a.
As shown in FIG. 7, the driven leg 33 is
And a rubber roller 33b rotatably supported by the support portion 33a via a pin 33c and fixed in a direction (downward in the figure) orthogonal to the longitudinal direction of the stopper member. . Support section 33a
Is fixed at a position separated by a predetermined distance from the mounting hole 32 toward the endless chain 24. As a result, when the driven leg 33 is lifted, the stopper member 32 rotates around the mounting shaft 34, so that the stopper member 32 can easily and reliably protrude from the load-bearing surface 31a.

As described above, two stopper members 32 are provided for each slat member, and the mounting shaft 34 is
The slat member 31 is disposed at a central portion of the slat member 31 at a predetermined interval. Therefore, if the driven leg 33 is lifted, the stopper member 32 projects in a V-shape from the load carrying surface 31a. Therefore, the stopper member 32 is
The vehicle 60 mounted on the transport trolley 1 will function as a car stop that clamps the front wheel 61 of the vehicle 0 from the front and rear.
However, it is possible to reliably prevent the front-rear movement on the upper surface of the transport vehicle 1 while the transport vehicle 1 is traveling. Further, a stopper member 32 functioning as a car stop is provided on the slat conveyor 20.
Is provided, a space for providing a bogie on the upper surface of the transport vehicle 1 becomes unnecessary.

As shown in FIG. 7 and FIG.
Protrudes downward from the bottom surface of the slat member 31 via a rectangular opening 31d formed in the bottom surface of the slat member 31. The entire length of the opening 31d is set shorter than the entire length of the opening 31b. Thereby, the slat member 31
However, when it is located in the upper circulation path of the slat conveyor 20, the bottom surface of the stopper member 32 contacts the inner surface of the bottom wall of the slat member 31a. Further, as described above, the overall height of the stopper member 32 is set slightly shorter than the overall height of the slat member 31. Therefore, when the slat member 31 is located in the upper circulation path, the upper surface of the stopper member 32 and the load mounting surface 31a are substantially flush with each other. Opening 31
The roller 33b of the driven leg portion 33 protruding from the upper surface d is provided with a lift driving plate 3 which can move up and down with respect to the load carrying surfaces 30a, 31a of the slat members 30, 31 located in the upper circulation path.
Contact 6

The lift driving plate 36 includes the slat member 30,
It is a plate disposed between the upper circulation path 31 and the lower circulation path 31 in parallel with the load carrying surfaces 30a, 31a. That is, as shown in FIG. 6, the lift driving plate 36 includes a lowermost point (roller 33 b) of the driven leg 33 fixed to the stopper member 32 located in the upper circulation path, and a stopper located in the lower circulation path. It is arranged between the uppermost point of the member 32. As shown in FIG. 2, the slat conveyor 20 is provided with two lift driving plates 36 at predetermined intervals with a center line in the longitudinal direction of the carriage being interposed therebetween.
The distance between the centers of the two lift driving plates 36 in the transport direction of the slat conveyor 20 is approximately equal to the length of the wheel span of the vehicle 60 to be mounted. Also, lift drive plate 3
6 is a predetermined number (for example, 6) of slat members 30
It has a width corresponding to (31). As a result, only the stopper member 32 located above the lift driving plate 36 projects upward from the load carrying surface 31a, and the front wheel 6
As a result, the number of stopper members 32 required to hold the front wheels 61 of the automobile 60 can be operated.

The lift driving plate 36 is provided on the conveyor frame 2
Projections protrude from the openings 21b and 22b formed in the carriages 1 and 22 in the front-rear direction of the carriage. At both ends of the lift driving plate 36, shafts 37a of air cylinders 37 fixed to the conveyor frames 21 and 22 are fixed. In addition,
The device for raising the lift driving plate 36 is the air cylinder 3
The apparatus is not limited to 7, and a device driven by a hydraulic cylinder or a motor may be used. By actuating the air cylinder 37, the lift driving plate 36 is moved to the load carrying surface 30 of the slat members 30, 31 located in the upper circulation path.
a, 31a.

Thus, as shown in FIG. 8, the driven leg 3 is brought into contact with the lift driving plate 36 via the roller 33b in conjunction with the lifting operation of the lift driving plate 36 corresponding to the cam.
3 also moves upward smoothly. Then, the stopper member 32 is rotated around the mounting shaft 34 by the movement of the driven leg 33, so that the end of the stopper member 32 on the endless chain 24 side protrudes from the load carrying surface 31a.
As described above, the lift mechanism 35 including the driven leg 33 and the lift driving plate 36 has a simple structure and can reliably operate the stopper member 32.

Further, the slat conveyor 20 is provided with a guide member 38 for supporting the stopper member 32 so as to cover the sides of the side circulation paths of the slat members 30 and 31 and the lower part of the lower circulation path (FIG. 9). 6). The guide member 38 covers one end of the upper circulation path of the slat member from the one end of the upper circulation path to the other end of the upper circulation path through the lower circulation path along the load carrying surfaces 30a and 31a. In the carrier 1, one narrow guide member 38 is fixed to each of the conveyor frame 21 and the conveyor frame 22 so as to cover both end portions of the slat members 30 and 31. However, the conveyor frame 21 and the conveyor frame 22 are fixed to each other. Slat members 30, 31 using guide members 38 corresponding to the length between them.
May cover the entire conveyor surface. Thereby, when the slat member 31 driven by circulation passes through the side circulation path and the lower circulation path, the stopper member 32
As a result, the stopper member 32 does not protrude laterally or downwardly from the load carrying surface 31a. Therefore, the slat conveyor 20 can be operated smoothly. Note that a resin sheet or the like having a smooth surface may be adhered to the upper surface of the guide member 38.

On the other hand, the roller conveyor 40 is a roller 4 rotatably supported by a conveyor frame 22 and a conveyor frame 42 which are shared with the slat conveyor 20.
2 is driven to rotate by a chain 43. The chain 43 is circulated by the conveyor drive unit 29. Therefore, if the conveyor driving unit 29 is rotated forward or backward, the roller conveyor 40 is driven simultaneously and in the same direction as the slat conveyor 20. Roller 4
2 is the slat member 3 of the slat conveyor 20
The length is set longer than the total length of 0 and 31. Thus, when the front wheel 61 of the vehicle 60 is placed on the slat conveyor 20, the rear wheel 62 is reliably placed on the roller conveyor 40 regardless of whether the distance between the axles of the vehicle 60 is short or long. Can be. The conveyor on which the rear wheel 62 is placed is not limited to a roller conveyor, but may be a slat conveyor, a belt conveyor, or the like.

As shown in FIG. 2, a horizontal cover plate portion 21c extends from the upper end of the conveyor frame 21 toward the front of the carrier 1. Further, the conveyor frame 22 has a U-shaped cross section, and the central cover plate portion 22c covers the upper part of the conveyor driving portion 29. Further, from the upper end of the conveyor frame 41 of the roller conveyor 40, a horizontal cover plate portion 41 is formed.
c is extended toward the rear of the carrier 1. Each of the cover plate portions 21c, 22c, 41c is substantially at the same level as the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40. Therefore, the stopper member 3
2 does not protrude from the load carrying surface 31a,
The entire upper surface of the carrier 1 is almost completely flat.

Thus, the transport vehicle 1 can be applied to, for example, a (three-dimensional) parking lot in which the transport vehicle directly enters the entrance / exit port and the vehicle 60 is mounted on the transport vehicle 1 by the driver's operation. . In this case, the stopper member 3
In a state in which the vehicle 2 does not protrude from the load carrying surface 31a, the upper surface of the transport vehicle 1 is almost completely flat, so that the vehicle 60 can be smoothly placed on the transport vehicle 1 by the operation of the occupant. There is no risk of breaking the member 32. Further, since the upper surface of the transport vehicle 1 is almost completely flat, the occupant who gets off the vehicle or gets into the vehicle can walk very smoothly. In particular, high safety can be ensured even when a wheelchair passes or an infant walks.

Hereinafter, the multi-story parking lot 5 will be described with reference to FIG.
The transport procedure of the vehicle 60 at 0 will be described. Here, a case will be described as an example where a car that has entered a warehouse is transported to a predetermined parking section.

First, when the automobile 60 enters the entrance / exit port 51 and the front wheels 61 and the rear wheels 62 are positioned on the conveyor 51a installed at the entrance / exit port, the conveyor 51a and the conveyor 52a provided on the elevator 52 are provided. Is activated. Thereby, the automobile 60 is transferred from the entrance / exit port 51 to the elevator 52, and is also conveyed by the elevator 52 to a predetermined parking floor. Elevator 5
When 2 stops, the transport trolley 1 provided on the parking floor is moved to the side of the elevator 52.

When the transport vehicle 1 arrives at the side of the elevator 52, the conveyor 52a, the slat conveyor 20, and the roller conveyor 40 are operated, and the automobile 60 is transferred from the elevator 52 to the transport vehicle 1. At this time, the air spring 10 of the transport vehicle 1 is completely contracted, and the heights of the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40 are equal to the height of the conveyor surface of the conveyor 52a. When the center lines of the automobile 60 and the transport vehicle 1 in the longitudinal direction substantially coincide with each other, the conveyor 52a,
The slat conveyor 20 and the roller conveyor 40 are stopped.

In this state, the lift mechanism 35 is operated to raise the stopper 32 member. First, the air cylinder 37 is operated to raise the lift driving plate 36. As a result, in conjunction with the lifting operation of the lift driving plate 36, the driven leg 33, which comes into contact with the lift driving plate 36 via the roller 33b, also smoothly moves upward. The movement of the driven leg 33 causes the stopper member 32 to move
Since the stopper member 32 rotates around, as shown in FIG. 9, the stopper member 32 projects from the load carrying surface 31a (conveyor surface). As a result, the front wheels 61 of the automobile 60 are sandwiched by the two stopper members 32, and the traveling preparation of the carrier 1 is completed.

The air control valve is opened and the preload chamber is opened at the time when the vehicle 60 is transferred to the carrier 1, before the start of traveling of the carrier 1, at the same time as the traveling starts, or after the start of traveling. Air is supplied from 13 to the air spring 10. As a result, the air spring 10 extends as shown in FIG. 3, so that the frame 2 of the carrier 1 is in a state of being raised from the inner surface of the bottom wall of the bearing frame 7.
In this state, the transport trolley 1 carries the vehicle 60 from the elevator 52 to a predetermined parking section 53 while traveling.

During the traveling of the carriage 1, vibrations caused by the rolling of the wheels 5 and vibrations generated when the wheels 5 cross over the seams of the guide rails 56 are absorbed by the air spring 10 functioning as a suspension. Is done.
Therefore, the vibration generated when the transport vehicle 1 travels is reduced, and consequently, the vehicle 60 or the transport vehicle 1
It is possible to reduce the vibration transmitted to the building of the multistory parking lot 50 provided with. During the travel of the transport trolley 1, the air control valve is appropriately operated to adjust the amount of air supplied to the air spring 10 so that the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40 (the carrying surfaces 30 a and 31 a). ) Is always kept horizontal. On the other hand, a front wheel 61 of an automobile 60 mounted on the transport vehicle 1
Is held by the two stopper members 32 protruding from the load carrying surface 31a, so that the forward and backward movement of the vehicle 60 during the traveling of the transport trolley 1 is reliably restricted.

The air control valve is closed before the transport vehicle 1 approaches the parking section 53 in which the automobile 60 is to be parked and starts deceleration, at the same time as the deceleration start, or at any timing after the deceleration start. By opening the air release valve, the air spring 10 is completely contracted. As a result, the frame 2 of the transport trolley 1 descends with respect to the bearing frame 7, and the bottom surface of the vertical frame member 3, as shown in FIG.
It comes into contact with the upper surface of the vehicle height adjustment stopper 12. In this state, the height of the conveyor surfaces of the slat conveyor 20 and the roller conveyor 40 matches the height of the conveyor surface of the parking space 53.

When the carriage 1 arrives at the side of the parking section 53 and stops, the operation of the lift mechanism 35 is released, and
The stopper member 32 is lowered. As a result, the upper surface of the stopper member 32 is substantially at the same level as the load carrying surface 31a, and the conveyor surface is flat. Then, the slat conveyor 20, the roller conveyor 40, and the conveyor 53a of the parking section 53 are operated, and the automobile 60 is accommodated in the parking section 53. The transport trolley 1 waits until the next entry / exit instruction is issued. Note that the procedure for leaving a car in the multi-story parking lot 50 is performed in the same manner as the procedure described above.

The carrier according to the present invention has a (solid) shape.
Although described as applying to a parking lot, it is not limited to this. For example, it may be a transport trolley applied to a building where vibration is a problem, such as a complex commercial facility or an apartment where restaurants and concert halls are assembled. That is, since the transport vehicle itself has a means for reducing vibration, it is not necessary to take measures for preventing vibration such as a so-called floating floor structure on the building side, and the building cost can be reduced. .

[0051]

Since the carrier according to the present invention is constructed as described above, the following effects can be obtained. That is, a frame that supports a mounting portion on which a load is placed,
By coupling the bearing portion supporting the axle of the wheel with the elastic member via an elastic member, it is possible to realize a transport vehicle capable of reducing vibration during traveling.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a parking lot to which a transport vehicle according to the present invention is applied.

FIG. 2 is a perspective view showing a transport vehicle according to the present invention.

FIG. 3 is a partial cross-sectional view illustrating a main part of the transport vehicle of FIG. 2;

FIG. 4 is a partial cross-sectional view illustrating a main part of the transport vehicle of FIG. 2;

FIG. 5 is a partial sectional view showing another embodiment of the carrier according to the present invention.

FIG. 6 is a cross-sectional view showing a slat conveyor mounted on the transport vehicle of FIG. 2;

FIG. 7 is a perspective view showing a main part of the slat conveyor of FIG. 6;

FIG. 8 is a partial sectional view showing a main part of the slat conveyor of FIG. 6;

FIG. 9 is a plan view showing a procedure for transporting the automobile in the multi-story parking lot of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Conveyance trolley, 2 ... Frame, 5 ... Wheel, 6 ... Bearing part, 9 ... Axle, 10 ... Air spring (elastic member), 1
2 ... Vehicle height adjustment stopper, 20 ... Slat conveyor, 3
0, 31: slat member, 30a, 31a: load carrying surface, 32: stopper member, 33: follower leg (follower),
34: mounting shaft, 35: lift mechanism, 36: lift drive plate (drive section), 37: air cylinder, 38 guide member, 5
0 ... multi-level parking lot, 60 ... car, 61 ... front wheel.

Claims (7)

(57) [Claims] 1. A transport truck in a parking lot applied to a parking lot and capable of traveling on a transport path via wheels in a state in which the automobile as a load is mounted, a frame supporting a mounting portion on which the automobile is mounted; A transport vehicle comprising: a bearing portion that supports an axle of the wheel; and an elastic member having one end fixed to the frame and the other end fixed to the bearing portion. 2. The carriage according to claim 1, wherein the elastic member has an upper end fixed to the frame and a lower end fixed to the bearing portion. 3. The carrier according to claim 1, wherein the elastic member is an air spring. 4. The carrier according to claim 1, wherein the elastic member is a coil spring. 5. The vehicle according to claim 5, wherein the bearing is provided with a vehicle height adjusting mechanism for raising the frame against the urging force of the elastic member and determining the height of the frame. The carrier according to any one of claims 1 to 4. 6. A vehicle height adjusting mechanism for lowering the frame against the urging force of the elastic member and determining the height of the frame is provided in the bearing portion. The carrier according to any one of claims 1 to 4. 7. The vehicle according to claim 1, wherein said bearing portion is provided with a vehicle height adjusting stopper which comes into contact with a bottom portion of said frame when said air spring is contracted to determine a frame height. Item 4. The transport vehicle according to Item 3.