JP3595644B2 - Article storage device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in an article storage device, and more particularly to an article storage device in which articles are transported side by side between pallets or empty pallets between a conveying means and a storage shelf by a pair of slide forks to expand and contract. Things.
[0002]
[Prior art]
As such an article storage device, the present applicant has previously set the vehicle mounting level of the slide fork on the vehicle storage level above the storage shelf in a state in which the lifting platform as the transporting means is stopped beside the upper and lower storage shelves. An elevator-type multi-story parking device provided with a positioning device for positioning the elevator platform in two stages so as to be displaced between the lower position and the lower position has been developed and filed (see JP-A-8-310608).
[0003]
In this positioning device, an engaging member is provided on one of the lift table and the storage shelf, and a guide member having a continuous two-step guide groove is provided on one of the other of the lift table and the storage shelf. One of the joining member and the guide member is engaged with the other in two stages in accordance with the amount of advance of the fluid pressure cylinder as the advance / retreat driving means, so that the elevator is displaced vertically in two stages. Have been.
[0004]
Specifically, when paying out the vehicle from the elevator to the storage shelf, first, with the vehicle mounted on a pair of slide forks of the elevator together with the pallet, transport the elevator to the side of the intended storage shelf. And stop it. Next, the positioning device is driven to engage the engaging member and the guide member, and the vehicle mounting level of the two slide forks is displaced to a position slightly higher than the storage shelf to position the elevator. Thereafter, the slide forks are horizontally extended toward the storage shelf, and the vehicle is moved to the storage space of the storage shelf together with the pallet. Thereafter, the positioning device is driven to switch the engagement between the engaging member and the guide member, and the vehicle mounting level of the two slide forks is displaced to a position slightly below the storage shelf to position the elevator. As a result, the vehicle is transferred from both slide forks to the storage shelf along with the pallet and stored. Thereafter, both slide forks are horizontally contracted toward the elevator, and the payout of the vehicle is completed.
[0005]
On the other hand, when the vehicle is pulled into the elevator from the storage shelf, the empty elevator is first transported to the side of the intended storage shelf and stopped. Next, the positioning device is driven to engage the engaging member and the guide member, and the vehicle mounting level of the two slide forks is displaced slightly below the storage shelf to position the elevator. Thereafter, the two slide forks are horizontally extended toward the storage shelf to prepare for receiving the on-board pallets stored in the storage shelf. Thereafter, the positioning device is driven to switch the engagement between the engaging member and the guide member, and the vehicle mounting level of the two slide forks is displaced to a position slightly higher than the storage shelf to position the elevator. As a result, the vehicle is transferred from the storage shelf to the slide forks together with the pallet. Thereafter, both slide forks are horizontally contracted toward the elevator, and the vehicle is completely retracted.
[0006]
[Problems to be solved by the invention]
However, in the elevator-type multi-story parking device described above, the following problem occurs because the relative level difference between the pair of slide forks and the storage shelf is used when the vehicle is delivered.
[0007]
(1)  The storage space of the storage shelf must be increased in the vertical direction in consideration of the amount of vertical displacement of both slide forks.
[0008]
(2)  The positioning device displaces the entire elevator platform in two stages in the vertical direction, causing a large difference in the tension of the wire rope that suspends and supports the four corners of the elevator platform before and after the change, causing a slip between each wire rope and the sheave. Occurs, and the four-point level of the subsequent platform becomes out of order, and the platform becomes unstable.
[0009]
(3)  When both slide forks are extended while mounted on the vehicle, a very large overturning moment acts on the entire lifting platform. Propulsion is required and production costs rise. Also, the slide fork itself needs to be robust so as not to bend, and it is large and heavy.
[0010]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to reduce the storage space of a storage shelf, stabilize transport means such as a lifting platform, and reduce manufacturing costs. It is in.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is intended to prevent a pair of slide forks from being displaced in a vertical direction only by extending and retracting a pair of slide forks when an article such as a vehicle is transferred between a transport means and a storage shelf. Further, in connection with this, the load of both slide forks is applied to the storage shelf.
[0012]
Specifically, the present invention has a transport path extending in the up-down direction and a pair of slide forks that can expand and contract in the horizontal direction. Transport means for transporting along the transport path, and a storage shelf provided on the side of the transport path, and when loading and unloading articles, the transport means is stopped on the side of the storage shelf, and the two slide forks expand and contract. The following solution has been taken for an article storage device in which articles are transferred between the transporting means and the storage shelves by pallet or empty pallets by operation.
[0013]
That is, a first solution of the present invention is to form a pair of support members for supporting the lower surface of the pallet on the upper surface of each of the slide forks at predetermined intervals in the fork expansion and contraction direction.And in a state where it is displaced in the horizontal direction orthogonal to the forkTo protrude. Further, when the pallet is mounted on both slide forks, the pair of receiving members supported by the respective support members are moved toward both ends of the lower surface of the pallet.To support each support memberProtrude two pairs at a time. In addition, a movable stopper operable between a restricting position for restricting the movement of the pallet to the transport path side and a retracting position for allowing the pallet to move to the transport path side is provided on the storage shelf. . Then, at the time of delivery from the conveying means to the storage shelf, the lower surface of the pallet is positioned slightly higher than the pallet mounting surface of the storage shelf, and In the operation posture of the stopper to the regulating position, the contraction operation of the two slide forks releases the supporting state of the receiving members to the supporting members, and transfers the articles together with the pallets or the empty pallets to the storage shelves while storing the articles. At the time of delivery from the shelf to the transporting means, the receiving members are pushed up by the respective supporting members by the extension operation of the two slide forks to support the article together with the pallet or the empty pallet from below with the two slide forks, and the lower surface of the pallet. Is positioned slightly higher than the pallet mounting surface of the storage shelf, and the movable stopper moves to the retracted position. The by contraction operation of both the slide fork, characterized in that to pass to the transport means pallet or per empty pallet goods in.
[0014]
With the above arrangement, in the first solution of the present invention, the lower surfaces of the pallets on both slide forks are slightly smaller than the pallet mounting surface of the storage shelves in a state where both slide forks extend horizontally toward the storage shelf. It is positioned high and does not interfere with each other. In this state, when the movable stopper is moved to the regulating position and the two slide forks are contracted horizontally, the movement of the article mounting pallet or the empty pallet is regulated by the movable stopper, and the pallet does not move on the spot. Returns to the transporting means, and the article-loaded pallet or the empty pallet is paid out to the storage shelf. On the other hand, when the movable stopper is moved to the retracted position and the two slide forks are contracted horizontally, the movement of the article mounting pallet or the empty pallet is not restricted by the movable stopper, and with the contraction operation of the two slide forks. It is drawn into the transport means.
[0015]
As described above, when the article-loaded pallet or the empty pallet is transferred between the transporting means and the storage shelf, the two slide forks only expand and contract in the horizontal direction and do not displace in the vertical direction. Therefore, it is not necessary to consider the amount of vertical displacement of both slide forks, and the storage space of the storage shelf can be reduced accordingly.
[0016]
In addition, the fact that the two slide forks are not displaced in the vertical direction means that the transport means provided with the both slide forks is not displaced in the vertical direction. For example, the transport means is an elevator platform of an elevator type multi-story parking device. In this case, even if the elevator is positioned to the side of the storage shelf, the elevator is not displaced in the vertical direction, so that the tension of the wire ropes that suspends and supports the four corners of the elevator does not fluctuate. The four-point level is always constant, and the platform can be stabilized.
[0017]
furtherEven when both slide forks expand and contract upon delivery of an article, the support member on the tip side of the fork does not contact the receiving member on the transport path side of the pallet on the storage shelf, that is, the pallet receiving member replaces the supporting member of the slide fork. The article-mounted pallet or empty pallet is stably delivered without rattling in the vertical direction without getting over, and the wear and impact noise of each part due to the contact are reduced.
[0018]
The present invention2According to a first aspect of the present invention, in the first aspect, one of each of the support members and the receiving members is formed of a roller or a roller that is rotatable in a fork extending / contracting direction, and the other is capable of rolling contact with the roller or the roller. It is characterized by comprising a pair of inclined portions inclined obliquely downward and a flat portion connecting the two inclined portions.
[0019]
With the above configuration, the present invention2In the above solution, since each support member and the receiving member are in rolling contact rather than frictional contact, a large driving force is not required to extend and retract both slide forks at the time of article delivery, and the rollers or rollers have inclined portions. Because of the rolling, the transfer operation becomes smooth and the wear of both is reduced as much as possible.
[0020]
The present invention3According to the first aspect of the present invention, in the first aspect, the movable stopper is provided on the storage shelf so as to be vertically rotatable, and the upper end of the stopper always projects above the pallet mounting surface of the storage shelf to move the pallet toward the transport path. Is regulated by the biasing means. Further, a slide plate is provided on each slide fork so as to be able to move back and forth in a horizontal direction orthogonal to the fork extension and contraction direction. When the slide fork is extended in the projecting state of the slide plate, the upper portion of the movable stopper is held down by the projecting portion of the slide plate and rotated downward against the urging force of the urging means. The upper end is immersed below the pallet placing surface of the storage shelf to allow the pallet to move toward the transport path.
[0021]
With the above configuration, the present invention3According to the means for solving the problems described above, the movable stopper is reliably switched between the restricting position for restricting the movement of the pallet to the conveying path and the retracting position for permitting the moving of the pallet to the conveying path, so that the delivery operation can be performed without any trouble. Further, it is not necessary to provide a drive device for the movable stopper on each storage shelf.
[0022]
The present invention4According to a first aspect of the present invention, in the first aspect, a locking means for preventing the pallet from moving in the horizontal direction is provided on each slide fork.
[0023]
The present invention5The solution of the4In the above solution, the locking means is constituted by an actuator having a telescopic rod which can be vertically extended and contracted. Further, the telescopic rod is extended upward by the extension operation of the actuator to be engaged with the positioning hole on the pallet side, and is contracted downward by the contraction operation of the actuator to be detached from the positioning hole. I do.
[0024]
With the above configuration, the present invention4,5In the above solution, the pallet is positioned on both slide forks, and there is no possibility of dropping from both slide forks.
[0025]
The present invention6According to a first aspect of the present invention, in the first aspect, a guide roller is arranged on each slide fork so as to be rotatable in the fork extension and contraction direction. Further, a guide rail for guiding and supporting the guide roller from below when each slide fork is extended and retracted is provided on the storage shelf.
[0026]
The present invention7According to the first aspect of the present invention, in the first aspect, the guide roller is disposed on the storage shelf so as to be rotatable in the fork extension / contraction direction. Further, each slide fork is provided with a guide rail that is guided and supported from below by the guide roller when each slide fork extends.
[0027]
With the above configuration, the present invention6,7According to the above solution, even if both slide forks extend while the articles are loaded, the two slide forks are horizontally held by the storage shelf and do not bend, and the overturning moment acting on the entire transporting means is reduced. Therefore, the positioning device and the slide fork need not be particularly durable and can withstand use sufficiently, and the propulsive force of the fluid pressure cylinder as the advance / retreat drive means does not need to be particularly large, so that the production cost is particularly high. Never. Also, both slide forks are small and lightweight and can withstand use sufficiently. In particular,6In the above solution, since the guide roller is provided on the slide fork of the transport means,7The number of guide rollers is greatly reduced as compared to the case where a guide roller is required for each storage shelf as in the solution to the problem described above, and the cost is reduced.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0029]
(Embodiment 1)
FIG. 5 shows an elevator-type multi-story parking device A of a bottom entry type as an article storage device according to the first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a building, and 2 denotes a plurality of levels of storage spaces provided in layers on both left and right sides of a space excluding a lower end portion and an upper end portion inside the building 1. A storage shelf 3 is installed, and a pallet P on which a vehicle C as an article is mounted is placed on the storage shelf 3.
[0030]
An elevator hoistway 4 as a transport path extending in the vertical direction is provided between the storage spaces 2 on both the left and right sides, and each of the storage shelves 3 is provided at predetermined intervals in the vertical direction on both sides of the elevator hoistway 4. They are arranged in a row. In the elevator hoistway 4, an elevator 6 as a transporting means constituting the elevator 5 is arranged so that its four corners are connected to one end of four wire ropes 7 and suspended so as to be able to ascend and descend. The elevator 6 is raised to the side of the target storage shelf 3 to transfer the vehicle C with the storage shelf 3 together with the pallet P. Reference numeral 8 denotes a driven pulley, 9 denotes a driving pulley driven by a motor (not shown), 10 denotes a balance weight connected to the other end of the wire rope 7, and each driven pulley 8 and the driving pulley 9 are upper ends inside the building 1. The space of the part is set as the machine room 11 and is installed in the machine room 11.
[0031]
At the lower end of the building 1, an entrance / exit opening 12 for a vehicle C to enter / exit is formed. On both sides of the entrance / exit opening 12, a vehicle entrance / exit space 13 following the elevator hoistway 4 is provided. A pit 14 is recessed on the floor at the lower end of the elevator hoistway 4, and a slewing device 17 having a slewing base 16 provided on a base body 15 is installed in the pit 14. The direction of the vehicle C that has entered the pallet P on the turntable 16 is changed by 180 °.
[0032]
As shown in FIG. 6, the building 1 is assembled by steel materials such as four pillars 18 erected on the ground and many beams 19 horizontally bridged between adjacent pillars 18. Each of the storage shelves 3 is composed of a steel structure and an exterior panel (not shown) provided outside the steel structure, and the two storage shelves 3 are horizontally provided on both sides of each storage space 2. The in-vehicle pallet P is stored in the storage space 2 with both short side ends of the pallet P supported from below by the two shelf rails 3a. In FIG. 6, reference numeral 20 denotes a shelf column to which one end of each of the shelf rails 3a is attached.
[0033]
The elevator 6 includes an elevator main body 23 framed by two vertical frames 21 and two horizontal frames 22, and two vertical frames 24 in the middle of the elevator main body 23. And a support frame 26 framed by two horizontal frames 25 is attached to the lift base body 23 so as to be able to move upward, and the four corners of the support frame 26 are used for turning the vehicle C by the turning device 17. A receiving portion 27 for mounting and supporting the pallet P between the turning device 17 and the pallet P is attached to the pallet P. A support frame 28 is attached to the front and rear ends of the elevator main body 23, one end of each of the wire ropes 7 is connected to both ends of each support frame 28, and the elevator 6 is suspended and supported by the elevator hoistway 4. I have. As shown in FIG. 7, guide rollers 29 are supported at both ends of the support frames 28 by brackets 30, and the guide rollers 29 are engaged with H-shaped steel flanges 20 a serving as the shelf columns 20. The flange 20a is rolled up and down in accordance with the elevating operation of the elevating table 6. At the front end (lower end in FIG. 6) of the elevator platform main body 23 on the vehicle entry / exit side, an entry / exit deck 31 for a vehicle C and a person to enter / exit is provided.
[0034]
A plate-like engagement guide member 55 having an engagement groove 55a is attached to each shelf 20 on each storage shelf 3 side, one by one corresponding to each storage shelf 3. At both ends of the two front and rear support frames 28, one hydraulic cylinder 54 having a piston rod 54a extending horizontally to the storage shelf 3 side is installed one by one, and an engagement pin 51 is provided at the tip of the piston rod 54a of the hydraulic cylinder 54. Is attached. The engaging pin 51, the engaging guide member 55, and the fluid pressure cylinder 54 constitute a positioning device 57. In a state where the elevator 6 stops at the side of the storage shelf 3, the four corners of the elevator 6 As shown in FIG. 7, the lifting table 6 is moved to the storage shelf 3 by causing the engaging pin 51 to advance by the synchronized extending operation of each hydraulic cylinder 54 and engaging with the engaging groove 55 a of the engaging guide member 55. They are positioned sideways.
[0035]
A pair of slide forks 32 that can be extended and contracted in the horizontal direction are installed inside the support frames 28 of the lift 6 (the lift main body 23), and the lift 6 is attached to the vehicle C by the two slide forks 32. Is mounted on the pallet P or with an empty pallet P to move up and down the elevator hoistway 4.
[0036]
As shown in FIG. 1, FIG. 6 and FIG. 7, each of the slide forks 32 includes a base fork 33 fixed to the vertical frame 21 of the lift base body 23, and the base forks 33 are arranged in parallel. Two L-shaped base frames 33a are connected by a flat plate 33b, and a plurality of guide rollers 34, 35 are rotatably mounted outside the base forks 33a at predetermined intervals. ing.
[0037]
A middle fork 36 is movably supported by the base fork 33. The middle fork 36 is configured by connecting two substantially H-shaped middle frames 36a arranged in parallel with a flat plate 36b. The two middle frames 36 a are guided by the guide rollers 34 and 35 of the base fork 33 so as to advance and retreat with respect to the base fork 33.
[0038]
The middle fork 36 movably supports a top fork 37 on which the in-vehicle pallet P or the empty pallet P is mounted. The top fork 37 is provided with two substantially U-shaped top frames 37a arranged in parallel. A plurality of guide rollers 34 and 35 are provided at predetermined intervals on the inner sides of both sides of the top frames 37a so as to be rotatable at predetermined intervals, similarly to the base plate 33a. The guide rollers 34 and 35 guide the advancing / retreating operation of the top fork 37 with respect to the middle fork 36.
[0039]
As shown in FIG. 8, three sprockets 38, 39, and 40 are arranged on the back side of each of the base forks 33, and a chain 41 is wound around each of the sprockets 38, 39, and 40. Are connected to the front and rear ends of the middle fork 36, respectively. Two sprockets 42 and 43 are arranged on the back side of the middle fork 36, and a chain 44 is wound around the sprocket 42 on the tip side, and both ends of the chain 44 are connected to the base fork 33 and the top fork 37. And another chain 45 is also wound around the other proximal sprocket 43, and one end of the chain 45 is connected to the distal ends of the base fork 33 and the top fork 37, respectively. Have been.
[0040]
Both ends of a shaft 46 are connected to sprockets 38 of the pair of base forks 33, and a driven sprocket 47 is attached to the shaft 46, while an output shaft 48 a A drive motor 48 having a drive sprocket 49 mounted thereon is installed. An endless chain 50 is wound around the drive sprocket 49 and the driven sprocket 47. Then, at the time of loading and unloading, the elevator 6 is stopped to the side of the storage shelf 3 and the three chains 41, 44, 45 are driven by the forward / reverse operation of the drive motor 48, so that the middle fork 36 and the top fork 37 is advanced and retracted on one side of the storage shelves 3 and 3 on both sides thereof, and by this advancing and retreating operation, that is, the expansion and contraction operation of the two slide forks 32, the pallet is placed in a posture in which the vehicle C is turned sideways with the long side of the pallet facing the storage shelf 3 side. Each P or an empty pallet P is laterally transferred between the elevator 6 and the storage shelf 3 and delivered.
[0041]
As shown in FIG. 1, a movable stopper 59 having an engaging portion 59a at the upper end is attached to the storage shelf 3 so as to be rotatable vertically by a rotation shaft 58 near the center of the transfer direction of each shelf rail 3a. The lower end of the movable stopper 59 is connected to the shelf rail 3a by a coil spring 61 as an urging means. When the pallet P is stored in the storage shelf 3, the movable stopper 59 controls the movement of the pallet P toward the elevator hoistway 4, and the movement of the pallet P toward the elevator hoistway 4. Operable between the evacuation position and the evacuation position. That is, in the movable stopper 59, the locking portion 59a, which is the upper end of the stopper, always projects above the pallet mounting surface 3b, which is the upper surface of each shelf rail 3a of the storage shelf 3, by the spring force of the coil spring 61, and the pallet P The engaging portion 59a is engaged from the elevator hoistway 4 side to the corner of the vertical surface p4 of the rear surface recess p3 constituting the central rising portion p2 between the two wheel entry portions p1 and p1, and the elevator hoistway 4 of the pallet P The movement to the side is regulated. Contrary to this, the movement of the pallet P toward the back of the storage shelf 3 is restricted by a fixed stopper 3c projecting upward at the end of the back of the shelf rail 3a as shown in FIGS. It has become.
[0042]
On the other hand, in the middle of the upper surface of the top fork 37 of each of the slide forks 32, the slide plate 70 can be extended and retracted in the horizontal direction orthogonal to the fork expansion and contraction direction in a state where the slide plate 70 is prevented from falling off by the two pressing plates 71. Are located. A slide motor 72 is installed on one (inside) top frame 37a of the top fork 37, and a horizontal arm 73 having an engagement pin 73a at the tip is connected to an output shaft of the slide motor 72. The engagement pin 73a is movably engaged with a long hole 70a formed in the slide plate 70. Then, the horizontal arm 73 is turned by 180 ° by the activation of the slide motor 72 so that the slide plate 70 protrudes to the side of the top fork 37 in a direction orthogonal to the fork extension / retraction direction. , The upper portion of the movable stopper 59 is pressed by the protruding portion of the slide plate 70 and rotated downward against the spring force of the coil spring 61, and the locking piece 59 a is placed on the pallet of the storage shelf 3. The pallet P is immersed below the surface 3b to allow the pallet P to move toward the elevator hoistway 4 side.
[0043]
On the side of the slide motor 72 of the top fork 37, an actuator (a fluid pressure cylinder 74 in this example) as a locking means for preventing the pallet P from moving in the horizontal direction is arranged in parallel. It has a telescopic rod 74a that can expand and contract in the direction, and the telescopic rod 74a passes through a long hole 70b formed in the slide plate 70. The reason why the telescopic rod 74a passes through the elongated hole 70b is to allow the slide plate 70 to move. The extension rod 74a extends upward by the extension operation of the fluid pressure cylinder 74, and is positioned by a positioning hole 76a formed in a reinforcing plate 76 that reinforces the center rising portion p2 of the pallet P from the back side (see FIGS. 2 and 3). And FIG. 4), while being contracted downward by the contraction operation of the fluid pressure cylinder 74 and detached from the positioning hole 76a.
[0044]
As a feature of the present invention, a pair of rollers 75 serving as a pair of support members for supporting the lower surface of the pallet P are provided on the upper surface of the top fork 37 of each of the slide forks 32 so as to roll freely at predetermined intervals in the fork expansion and contraction direction, and A part thereof is arranged so as to protrude from the upper surface of the top fork 37. In addition, the pair of rollers 75 are protruded at diagonal positions on the upper surface of the top fork 37 in a state where they are displaced in a horizontal direction perpendicular to the fork extension and contraction direction.
[0045]
On the other hand, as shown in FIG. 2, the pallet P is supported by the rollers 75 when the pallet P is mounted on both slide forks 32 near both ends of the short side of the lower surface of the two wheel entry portions p1 of the pallet P. Two pairs of receiving members 79 each consisting of a pair of plates are provided so as to protrude, and as shown in FIGS. 3, 4, and 7, each receiving member 79 is inclined obliquely downward so as to be in rolling contact with the roller 75. It is composed of a pair of front and rear inclined portions 79a and a flat portion 79b located between and connecting the two inclined portions 79a. Each of the pair of receiving members 79 is provided at a diagonal position so as to correspond to the pair of rollers 75 and is displaced in a horizontal direction orthogonal to the fork expansion and contraction direction. Therefore, when the pallet P is supported by both slide forks 32, the lower surface of the pallet P is positioned slightly higher than the pallet mounting surface 3b of the storage shelf 3. Note that, contrary to the present example, a receiving member 79 made of a plate may be provided on the slide fork 32 side, and a roller 75 may be provided on the pallet P side. Good.
[0046]
When the vehicle C is transferred from the lift 6 to the storage shelf 3, the lower surface of the pallet P is moved from the pallet mounting surface 3 b of the storage shelf 3 by the extension operation of the slide forks 32 carrying the pallets P or the empty pallets P. Is positioned slightly higher, leaving a distance S between them, and in the operating posture of the movable stopper 59 to the regulating position, the contraction of the slide forks 32 causes the support members 79 to be supported by the rollers 75. Is released to transfer the vehicle C together with the pallet P or the empty pallet P to the storage shelf 3, and at the time of delivery from the storage shelf 3 to the elevator 6, the respective receiving members 79 are moved by the extension operation of the two slide forks 32. Each of the rollers 75 pushes the vehicle C upward to support the vehicle C together with the pallet P or the empty pallet P from below with the two slide forks 32. The vehicle C is moved to the pallet P by the contraction of the two slide forks 32 when the movable stopper 59 is moved to the retracted position with the distance S between them being slightly higher than the pallet mounting surface 3b of the shelf 3. The empty or pallet P is delivered to the lift 6.
[0047]
Next, a description will be given, with reference to FIGS. 3 and 4, of a procedure for loading and unloading the vehicle C in the elevator-type multi-story parking facility A configured as described above.
[0048]
<Reception>
(1)  Operation of the vehicle turning device 17 so that the incoming vehicle C entering the vehicle entrance / exit space 13 from the entrance / exit opening 12 gets on the empty pallet P on the elevator 6 of the elevator 5 waiting for descent and prepares for exit, that is, exits forward. , The direction of the vehicle C is changed by 180 °. In this state, the incoming vehicle C is mounted together with the pallets P on the plates 37b of both slide forks 32, that is, both top forks 37. Specifically, each receiving member 79 of the pallet P rides on the roller 75 of each top fork 37 and is supported. The hydraulic cylinders 74 installed on each top fork 37 are extended, and the telescopic rods 74a are extended upward to engage with the positioning holes 76a of the reinforcing plate 76 of the pallet P to move the pallet P in the horizontal direction. Regulates the movement of people. A slide motor 72 installed on each top fork 37 rotates the horizontal arm 73 in the fork extension / retraction direction to retract the slide plate 70 so that the slide plate 70 does not interfere with the movable stopper 59 when the fork is extended. ing. In addition, four of the four corners of the lift 6Engagement pin 51Is the storage shelf 3 sideEngagement guide member 55Have receded so as not to interfere with.
[0049]
(2)  The elevator 6 is raised to the side of the storage shelf 3 to be stored and stopped (see FIG. 3A). In this state, the lower surface of the in-vehicle pallet P is positioned above the pallet mounting surface 3b of the storage shelf 3 (shelf rail 3a) with a slight distance S, and does not interfere with the pallet mounting surface 3b when the fork is extended. Like that. On the other hand, the movable stopper 59 of the storage shelf 3 causes the locking portion 59a to protrude upward from the pallet mounting surface 3b of the shelf rail 3a in a posture inclined to the rear side of the storage shelf 3 by the spring force of the coil spring 61. ing.
[0050]
(3)  The respective fluid pressure cylinders 54 of the four positioning devices 57 are extended in synchronism, the four engagement pins 51 are advanced to the storage shelves 3 on both sides, and the respective engagement pins 51 are respectively engaged with the respective engagement guide members 55. In the engaging groove 55a. As a result, the elevator 6 is stably and horizontally positioned from four directions by the four positioning devices 57.
[0051]
(Four)  The two slide forks 32 are extended by the activation of the drive motor 48, and the lateral movement of the vehicle pallet P to the storage space 2 is started (see FIG. 3B). At this time, the in-vehicle pallet P does not interfere with the pallet mounting surface 3b since the distance S is spaced upward from the pallet mounting surface 3b of the shelf rail 3a as described above.
[0052]
(Five)  When the in-vehicle pallet P moves laterally to almost the middle of the storage space 2, the in-vehicle pallet P hits the movable stopper 59 and presses the movable stopper 59 downward against the spring force of the coil spring 61 (FIG. 3 (c)). )reference).
[0053]
(6)  When the in-vehicle pallet P moves laterally to the delivery position of the storage space 2, the pressing of the movable stopper 59 is released, the movable stopper 59 protrudes upward by the spring force of the coil spring 61, and the locking portion 59a is moved to the center of the in-vehicle pallet P. Engage with the corner of the vertical surface p4 of the rising portion p2. As a result, the movement of the in-vehicle pallet P toward the elevator hoistway 4 is restricted, and the pallet P does not fall (see FIG. 3D). At the same time, the hydraulic cylinders 74 mounted on each top fork 37 are contracted, and the telescopic rods 74a are contracted downward to be separated from the positioning holes 76a of the reinforcing plate 76 of the pallet P.
[0054]
(7)  The two slide forks 32 are contracted by the activation of the drive motor 48. As a result, the roller 75 of each top fork 37 is disengaged from the receiving member 79 of the in-vehicle pallet P, and the in-vehicle pallet P is transferred to the pallet mounting surface 3b of the storage shelf 3 (shelf rail 3a), and the delivery of the incoming vehicle C is completed. The process is completed (see FIG. 3E).
[0055]
(8)  The respective fluid pressure cylinders 54 of the four positioning devices 57 are contracted in synchronism, the four engaging pins 51 are retracted from the storage shelves 3 on both sides, and the respective engaging pins 51 are moved to the respective engaging guide members 55. And the positioning of the lift 6 is released. Subsequently, when there is a warehouse, after preparing an empty pallet P, the elevator 6 is lowered to the side of the vehicle entrance / exit space 13, and when there is a warehouse, the elevator 6 is moved by the target exiting vehicle C. The storage shelf 3 is moved up and down to the side.
[0056]
<Shipping>
(1)  The lifting platform 6 of the empty cargo is raised to the side of the storage shelf 3 of the storage space 2 in which the unloading vehicle C is stored and stopped (see FIG. 4A). At this time, the fluid pressure cylinder 74 installed on each top fork 37 is contracting, so that the telescopic rod 74a does not interfere with the pallet P when the fork is extended. In addition, the slide motor 72 installed on each top fork 37 rotates the horizontal arm 73 by 180 ° to project the slide plate 70 so that the slide plate 70 interferes with the movable stopper 59 when the fork is extended. The hatching of the slide plate 70 in FIG. 4 indicates that the slide plate 70 is in a protruding state. In addition, four of the four corners of the lift 6Engagement pin 51Is the storage shelf 3 sideEngagement guide member 55Have receded so as not to interfere with.
[0057]
On the other hand, the movable stopper 59 of the storage shelf 3 causes the locking portion 59a to protrude upward from the pallet mounting surface 3b of the shelf rail 3a in a posture inclined toward the back of the storage shelf 3 by the spring force of the coil spring 61, The pallet P is engaged with the corner of the vertical surface p4 of the central rising portion p2 from the elevator hoistway 4 side to prevent the pallet P from falling.
[0058]
(2)  The respective fluid pressure cylinders 54 of the four positioning devices 57 are extended in synchronism, the four engagement pins 51 are advanced to the storage shelves 3 on both sides, and the respective engagement pins 51 are respectively engaged with the respective engagement guide members 55. In the engaging groove 55a. As a result, the elevator 6 is stably and horizontally positioned from four directions by the four positioning devices 57.
[0059]
(3)  Both slide forks 32 are extended by the activation of the drive motor 48, and the lateral movement of the vehicle-mounted pallet P to the storage space 2 is started (see FIG. 4B). At this time, the telescopic rod 74a passes below the on-board pallet P, but does not interfere with the pallet P because it is in a contracted state.
[0060]
(Four)  When the top forks 37 extend to near the delivery position of the storage space 2, the projecting portion of the slide plate 70 hits the upper portion of the movable stopper 59, and presses the movable stopper 59 downward against the spring force of the coil spring 61. (See FIG. 4 (c)). Thereby, the locking portion 59a of the movable stopper 59 is disengaged from the corner of the vertical surface p4 of the center rising portion p2 of the pallet P, and the regulation of the movement of the vehicle-mounted pallet P toward the elevator hoistway 4 is released.
[0061]
In parallel with this, the rollers 75 of the both top forks 37 are sunk into the receiving members 79 of the vehicle pallets P, and the vehicle pallets P are scooped up by the both top forks 37 and received from the storage shelf 3 (shelf rail 3a). Passed.
[0062]
(Five)  When both the top forks 37 are completely extended to the delivery position of the storage space 2, the hydraulic cylinders 74 installed on the respective top forks 37 are operated to extend, and the telescopic rods 74a are extended upward so that the reinforcing plate 76 of the pallet P The pallet P is engaged with the positioning hole 76a to restrict the horizontal movement of the pallet P.
[0063]
(6)  Both slide forks 32 are contracted by the drive of the drive motor 48. As a result, the vehicle-mounted pallet P is supported by both top forks 37 and starts to move laterally toward the lift 6, and the movable stopper 59 starts to rise gradually (see FIG. 4D).
[0064]
(7)  When the slide plate 70 comes off the movable stopper 59 due to the contraction operation of the two slide forks 32, the movable stopper 59 tries to protrude upward from the shelf rail 3a by the spring force of the coil spring 61, but the locking portion 59a Does not yet protrude while the pallet contacts the lower surface of the pallet P (see FIG. 4E), and the pallet P protrudes only after passing through the movable stopper 59. Then, when the contraction operation of both slide forks 32 is completed and the in-vehicle pallet P moves laterally to the elevating platform 6, the retraction of the retrieval vehicle C is completed.
[0065]
(8)  The respective fluid pressure cylinders 54 of the four positioning devices 57 are contracted in synchronism, the four engaging pins 51 are retracted from the storage shelves 3 on both sides, and the respective engaging pins 51 are moved to the respective engaging guide members 55. After releasing from the engagement groove 55a to release the positioning, the elevator 6 is lowered to the side of the vehicle entrance / exit space 13 to exit the exit vehicle C. Subsequently, when there is an outgoing vehicle, the vehicle ascends to the side of the storage shelf 3 in which the target outgoing vehicle C is stored, and unloads the outgoing vehicle C in the above-described manner. After the pallet P is prepared, the incoming vehicle C is mounted in a state where the pallet P is lowered to the side of the vehicle entrance / exit space 13, and the pallet P is received in the manner described in the above <Inbound>.
[0066]
As described above, in this example, when the in-vehicle pallet P or the empty pallet P is transferred between the lift 6 and the storage shelf 3, the slide forks 32 are only moved in the horizontal direction and not displaced in the vertical direction. With this configuration, it is not necessary to consider the amount of vertical displacement of the slide forks 32 as the storage space 2 of the storage shelf 3, and the storage space 2 of the storage shelf 3 can be saved by that much. .
[0067]
In addition, since the slide forks 32 are not displaced in the vertical direction, the tension of the wire rope 7 that suspends and supports the four corners of the lift 6 does not fluctuate. Stabilization can be achieved.
[0068]
Further, since a pair of rollers 75 on the upper surface of each slide fork 32 and a pair of receiving members 79 on the lower surface of the pallet P are both protruded in a state of being displaced in a horizontal direction orthogonal to the fork expansion and contraction direction, at the time of vehicle delivery, Even if both slide forks 32 expand and contract, the roller 75 on the tip end of the fork does not contact the receiving member 79 of the pallet P on the storage shelf 3 on the elevator hoistway 4 side. The vehicle-mounted pallet P or the empty pallet P can be stably transferred without rattling in the vertical direction without climbing over the 32 rollers 75, and wear and impact noise of each part due to contact can be reduced. .
[0069]
In addition, the receiving member 79 provided on the pallet P is composed of a flat portion 79b and an inclined portion 79a continuous on both sides thereof, and the roller 75 provided on the slide fork 32 is guided to the flat portion 79b via the inclined portion 79a. As a result, the contact between the two members is not a frictional contact but a rolling contact, so that a large driving force is not required to extend and contract the slide forks 32 when the vehicle is delivered, and the roller 75 passes through the inclined portion 79a. In addition, the delivery operation can be performed smoothly, and wear of both can be reduced as much as possible.
[0070]
Further, the movable stopper 59 provided on the storage shelf 3 is moved into and out of the pallet mounting surface 3b of the storage shelf 3 by the extension and retraction operation of the slide fork 32 and the slide plate 70 when the vehicle is delivered. The stopper 59 is reliably switched between a restricting position for restricting the movement of the pallet P toward the elevator hoistway 4 and a retracting position for permitting the movement of the pallet P toward the elevator hoistway 4, so that the delivery operation can be performed without any trouble. be able to.
[0071]
Furthermore, a fluid pressure cylinder 74 having a telescopic rod 74a as a locking means (actuator) for preventing the pallet P from moving in the horizontal direction is provided on each slide fork 32, and the telescopic rod 74a is positioned at the pallet P side positioning hole 76a. The pallet P is positioned by engaging with the pallet P, so that the pallet P can be prevented from dropping from the slide forks 32.
[0072]
(Embodiment 2)
FIG. 9 shows a configuration of a slide fork 32 and a storage shelf 3 in an elevator-type multi-story parking device A as an article storage device according to Embodiment 2 of the present invention. In this example, four guide rollers 77 are arranged at the lower end of one (outer) top frame 37a constituting the top fork 37 of each slide fork 32 so as to roll freely in the fork extension / retraction direction. At the lower end of the rail 3a, a guide rail 80 for guiding and supporting each of the guide rollers 77 from below when the slide forks 32 extend and retract is horizontally projecting inward. To guide each slide fork 32 by rolling along. Otherwise, the configuration is the same as that of the first embodiment. Therefore, the drawing used in the first embodiment is used as a substitute, and the same reference numerals in FIG. 9 denote the same parts as in FIG. 1 used in the first embodiment. And a detailed description thereof will be omitted.
[0073]
Therefore, in this example, the same operation and effect as in the first embodiment can be obtained.
[0074]
In addition, in this example, since the top fork 37 is guided and supported on the guide rail 80 on the storage shelf 3 side by the guide roller 77 in the extended state, even if both slide forks 32 extend in the vehicle mounted state, The two slide forks 32 can be held horizontally on the storage shelf 3 without bending, and the overturning moment acting on the entire lift 6 can be reduced. Therefore, the positioning device 57 and the slide fork 32 do not need to be specially strong, they can withstand use sufficiently, and the propulsive force of the fluid pressure cylinder 54 does not need to be particularly large, thereby avoiding a situation in which the production cost is particularly high. can do. Also, both slide forks 32 are small and lightweight and can be sufficiently used.
[0075]
(Embodiment 3)
FIG. 10 shows a configuration of a slide fork 32 and a storage shelf 3 in an elevator-type multi-story parking device A as an article storage device according to Embodiment 3 of the present invention. In this example, a plurality of guide rollers 78 are arranged on the inner side wall of the shelf rail 3a of each storage shelf 3 so as to roll freely in the fork extension / retraction direction, while one (outside) constituting the top fork 37 of each slide fork 32 is provided. The upper wall 37c of the top frame 37a constitutes a guide rail 37c which is guided and supported by the guide rollers 78 from below when the slide forks 32 extend, and the guide rollers 78 are connected to the guide rails 37c when the fork expands and contracts. To guide each slide fork 32 by rolling along. Otherwise, the configuration is the same as that of the first embodiment. Therefore, the drawing used in the first embodiment is substituted, and in FIG. 10, the same reference numerals are used for the same portions as those in FIG. 1 used in the first embodiment. And a detailed description thereof will be omitted.
[0076]
Therefore, in this example, the same operation and effect as in the second embodiment can be obtained. In this example, the guide rollers 78 need to be provided for each of the storage shelves 3 and the number thereof is enormous. However, in the second embodiment, the guide rollers 77 need only be provided on the slide fork 32 of the lift 6. For this reason, the number of guide rollers 77 can be reduced, and the second embodiment is more economical.
[0077]
In this example, the case where the article storage device is the elevator-type multi-story parking device A is shown, but the invention can also be applied to a case where the traveling bogie travels on the transport path as long as it has a slide fork. It is.
[0078]
【The invention's effect】
As described above, according to the present invention, at the time of delivery from the transport means to the storage shelf, the lower surface of the pallet is positioned slightly higher than the pallet mounting surface of the storage shelf by the extension operation of the pair of slide forks, and the movable stopper is provided. By moving the slide forks in the operating position to the restricted position, the articles are delivered together with the pallets or the empty pallets to the storage shelves. The lower surface of the pallet is positioned slightly higher than the pallet mounting surface of the storage shelf, and the movable stopper is moved to the retracted position, and the two slide forks are contracted to deliver the article together with the pallet or the empty pallet to the transport means. I did it. Therefore, it is not necessary to displace both slide forks in the vertical direction only by expanding and contracting the slide forks in the horizontal direction, and it is possible to save the storage space of the storage shelf by that much, and to use the elevator type multi-story parking space. In the case of a lifting platform of a device, the vertical displacement of the lifting platform is eliminated, the tension fluctuation of the wire ropes hanging and supporting the four corners of the lifting platform is eliminated, and the four-point level of the lifting platform is always kept constant. Can be stabilized.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a slide fork and a storage shelf in an elevator-type multi-story parking device as an article storage device according to a first embodiment.
FIG. 2 is a plan view of a pallet.
3 (a) to 3 (e) are views showing a process of dispensing a pallet to a storage shelf.
4 (a) to 4 (e) are drawings of a drawing process of a pallet from a storage shelf.
FIG. 5 is a schematic configuration diagram of an elevator-type multi-story parking device.
FIG. 6 is a cross-sectional plan view of the elevator-type multi-story parking device.
FIG. 7 is a side view of the elevator.
FIG. 8 is a perspective view showing a telescopic mechanism of a slide fork.
FIG. 9 is a perspective view showing a configuration of a slide fork and a storage shelf in an elevator-type multi-story parking device as an article storage device according to a second embodiment.
FIG. 10 is a perspective view showing a configuration of a slide fork and a storage shelf in an elevator-type multi-story parking device as an article storage device according to a third embodiment.
[Explanation of symbols]
3 storage shelves
4 elevator hoistway (transportation path)
6. Elevating platform (transportation means)
32 slide fork
37c Top frame upper wall (guide rail)
59 Movable stopper
61 Coil spring (biasing means)
70 slide plate
74 Fluid pressure cylinder (actuator, locking means)
74a telescopic rod
75 roller (supporting member)
76a Positioning hole
77 Guide roller
78 Guide roller
79 Receiving member
79a Inclined section
79b Flat part
80 Guide rail
A Elevator-type multi-story parking device (article storage device)
C vehicle (article)
P pallet

Claims (7)

A transport path extending vertically,
Conveyance means having a pair of slide forks that can expand and contract in the horizontal direction, and carrying the articles along with the pallets or empty pallets on both slide forks along the conveyance path,
Storage shelves provided on the side of the transport path,
When carrying in / out an article, the article is stopped at the side of the storage shelf, and the article is transferred between the conveyance means and the storage shelf with the pallet or the empty pallet by the expansion and contraction operation of the slide forks. A storage device,
On the upper surface of each slide fork, a pair of support members for supporting the lower surface of the pallet are provided at predetermined intervals in the fork expansion and contraction direction, and are protruded in a state of being displaced in a horizontal direction orthogonal to the fork expansion and contraction direction ,
Near the opposite ends of the lower surface of the pallet, when the pallet is mounted on both slide forks, a pair of receiving members supported by the respective support members are provided in pairs so as to correspond to the respective support members. ,
The storage shelf is provided with a movable stopper operable between a restricting position for restricting the movement of the pallet to the conveyance path while the pallet is stored and a retracting position for permitting the movement of the pallet to the conveyance path. And
At the time of delivery from the transport means to the storage shelf, the lower surface of the pallet is positioned slightly higher than the pallet mounting surface of the storage shelf, and the movable stopper is In the operating posture to the regulating position, the contraction operation of the two slide forks releases the support state of the receiving members to the support members, and delivers the articles together with the pallets or the empty pallets to the storage shelves,
At the time of delivery from the storage shelf to the transporting means, by extension operation of both slide forks, each receiving member is pushed upward by each support member to support the article together with the pallet or an empty pallet from below by the both slide forks, The lower surface is positioned slightly higher than the pallet placement surface of the storage shelf, and the movable stopper is moved to the retracted position, and the two slide forks are contracted to transfer the articles together with the pallets or the empty pallets to the transporting means. article storage apparatus characterized by being adapted to. Either each of the support members and the receiving members is a roller or a roller that can roll in the fork extension / contraction direction,
2. The article storage device according to claim 1, wherein the other comprises a pair of inclined portions which are inclined obliquely downward and which can make rolling contact with the roller or the roller, and a flat portion which connects the two inclined portions. The movable stopper is provided on the storage shelf so as to be rotatable in the vertical direction, and the upper end of the stopper always projects above the pallet mounting surface of the storage shelf and is biased by biasing means so as to regulate the movement of the pallet to the transport path side. Has been
On each slide fork, a slide plate is provided so as to be able to move back and forth in a horizontal direction orthogonal to the fork extension and contraction direction,
In the projecting state of the slide plate, by the extension operation of each of the slide forks, the upper part of the movable stopper is pressed by the projecting part of the slide plate and turned downward against the urging force of the urging means, and the upper end of the stopper is raised. 2. The article storage device according to claim 1, wherein the storage device is immersed below the pallet mounting surface of the storage shelf to allow the pallet to move toward the transport path. 2. The article storage device according to claim 1, wherein each slide fork is provided with locking means for preventing the pallet from moving in the horizontal direction. The locking means is an actuator having a telescopic rod that can expand and contract in the vertical direction,
The telescopic rod extends upward by the extension operation of the actuator and engages with the positioning hole on the pallet side, while contracting downward by the contraction operation of the actuator and detaches from the positioning hole. The article storage device according to claim 4, wherein A guide roller is arranged on each slide fork so that it can roll freely in the fork expansion and contraction direction.
The article storage device according to claim 1, wherein the storage shelf is provided with a guide rail that guides and supports the guide roller from below when the slide forks extend and retract. A guide roller is arranged on the storage shelf so that it can roll freely in the fork expansion and contraction direction.
2. The article storage device according to claim 1, wherein each slide fork is provided with a guide rail that is guided and supported from below by the guide roller when each slide fork is extended.

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