JP2001341806A - Article storage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the power of a driving source of a positioning device when positioning a slide fork by being displaced into two stages, upper and lower. SOLUTION: A guide member 46 in a raising/lowering mount 6 side is advanced by a crank mechanism 52 to engage a roller 43 in a storage rack side with a first guide groove 47a and a second guide groove 47b so that the raising/lowering mount 6 are positioned into the upper/lower two stages, the upper position where the vehicle mount level of the slide fork on the raising/ lowering mount 6 is higher than the vehicle mount level of the storage rack and the lower position where it is lower than the vehicle mount level. The guide member 46 is connected to a crank arm 49 via a rod 50. In a stage where the roller 43 is engaged with the first guide groove 47a of the guide member 46, rod connecting part 49a of the crank arm 49 is positioned between an inclined position separated from the arm rotation center 0 relative to the roller 43 and a position erected approximately at a right angle, while in the stage where the roller 43 is engaged with the second guide groove 47b of the guide member 46, the rod connection part is positioned between the erected position and an inclined position approaching to the roller than the arm rotation center O.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an article storage device, and more particularly to a measure for transferring an article by a slide fork between a transport means such as a lifting platform and a storage shelf.

[0002]

2. Description of the Related Art In an elevator-type multi-story parking device, when a vehicle is transferred between an elevator and a storage shelf, a positioning device positions the elevator to the side of the storage shelf. For example, Japanese Patent Application Laid-Open No. 4-339974 and Japanese Patent Application Laid-Open
According to Japanese Patent No. 41697, an engaging member provided on one of a lift table side and a storage shelf side is protruded to be engaged with one of the lift table and the storage shelf, so that the lift table is placed on the side of the storage shelf. It is designed to be horizontally supported and positioned.

On the other hand, the present applicant has disclosed in Japanese Patent Laid-Open No. 8-31060.
No. 8 has previously filed an application for an article storage device. In this application, an elevator-type multi-story parking device is exemplified as an article storage device, and when loading and unloading a vehicle, the elevator is stopped to the side of the storage shelf, and the elevator is moved up and down by a telescopic operation and a vertical operation of a slide fork on the elevator. Vehicles are delivered between the table and the storage shelf. In this elevator type multi-story parking device, in a state where the elevator is stopped on the side of the storage shelf, the vehicle mounting level of the slide fork is higher than the vehicle mounting level of the storage shelf and the lower position is lower than the vehicle mounting level. The lifting platform is positioned in two stages, up and down, by a positioning device so that the platform is displaced.

In this positioning device, for example, a guide member is connected to a tip end of a piston rod of a hydraulic cylinder installed on a lift table, and the guide member has a first guide groove extending in a horizontal direction and a first guide groove formed in the first guide groove. And a second guide groove which is continuous and extends obliquely downward toward the inside of the groove. On the other hand, a rollable engagement roller as an engagement member is provided on the shelf column on the storage shelf side, and the guide member is advanced in the horizontal direction by the extension operation of the fluid pressure cylinder, and the guide groove (first groove) is formed. By engaging the engaging rollers with the guide groove and the second guide groove, the vehicle mounting level of the slide fork is set to an upper position higher than the vehicle mounting level of the storage shelf and a lower position lower than the article mounting level. It is displaced.

[0005]

By the way, in the former two publications, when the engaging member is made to protrude, the weight of the elevator and the vehicle is not applied to the engaging member, but the latter relates to the present applicant. In the publication example, while the engagement roller is engaged with the guide groove of the guide member, the vehicle mounting level of the slide fork is displaced in two stages, up and down. Therefore, the engagement roller is particularly an inclined groove. During the movement in the second guide groove, the weight of the elevator and the vehicle is applied to the guide member, and a large power is required for the fluid pressure cylinder.

[0006] The present invention has been made in view of such a point, and an object of the present invention is to position the slide fork by displacing the slide fork up and down in two stages, as in the latter publication of the present applicant. Another object is to reduce the power of the driving source of the positioning device.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to an actuating means for engaging and disengaging a guide member and an engaging member of a positioning device in an article storage device such as a multistory parking device. The present invention is characterized in that a crank mechanism is adopted in place of the fluid pressure cylinder, and the rotation posture of the crank arm is related to the engagement position between the guide member and the engagement member.

More specifically, the present invention relates to a conveying path extending in a vertical direction, a slide fork which can be expanded and contracted in a horizontal direction, and a conveying means for mounting an article on the slide fork and moving up and down the conveying path. A storage shelf provided on the side of the transfer path, and an upper position where the article mounting level of the slide fork is higher than the article mounting level of the storage shelf when the transfer means is stopped on the side of the storage shelf. Positioning means for positioning the transport means in two stages up and down so as to be displaced to a lower position lower than the loading level, when loading and unloading articles, the transport means is stopped on the side of the storage shelf,
The following solution is provided for an article storage device that is designed to transfer articles between a transport unit and a storage shelf by the extension and retraction operation and the vertical movement of the slide fork.

That is, according to the first aspect of the present invention, the positioning means includes an engaging member provided on one of the transfer means side and the storage shelf side, and the other of the engagement means provided on the transfer means side or the storage shelf side. And a guide groove having a first guide groove extending in the horizontal direction and a second guide groove continuous with the first guide groove and extending obliquely upward or downward toward the inside of the groove. A guide member that guides the engaging member by engaging the engaging member with the groove, a rotary drive source provided on the transport unit side, a crank arm that is connected to the rotary drive source and rotates, and the crank arm and the transport unit A rod for connecting the engaging member or the guide member on the side to convert the rotational operation of the crank arm into a horizontal reciprocating operation of the engaging member or the guide member. Side engagement The material or the guide member is moved forward and backward in the horizontal direction to engage and disengage from the guide member or the engaging member on the storage shelf side, and the article mounting level of the slide fork is set to an upper position higher than the article mounting level of the storage shelf. A crank mechanism adapted to be displaced to a lower position lower than the article placement level, wherein the rod connecting portion of the crank arm is in a stage where the engaging member is engaged with the first guide groove of the guide member. The engagement member engages with the second guide groove of the guide member, between the inclined position at a position away from the center of rotation of the arm with respect to the engagement member or the guide member and a position raised substantially at a right angle. In this step, the arm is located between the raised position and the inclined position closer to the engagement member or the guide member than the center of rotation of the arm.

With the above arrangement, in the first aspect of the present invention, the transporting means such as the elevating platform moves up and down the transporting path, stops at the side of the target storage shelf, and is positioned in two stages by the positioning means. That is, the engaging member or the guide member on the conveying means advances by the operation of the crank mechanism, and the engaging member or the guide member is engaged and guided by the guide member or the engaging member on the storage shelf side with the advance operation. It is done by doing.

Thus, the article mounting level of the slide fork on the side of the transport means is displaced to an upper position higher than the article mounting level of the storage shelf and a lower position lower than the article mounting level of the storage shelf, and the slide fork is extended. Even if it does, a slide fork does not interfere with a storage shelf, and goods can be delivered. Further, even if a load fluctuates in the transporting means due to the delivery of the article, the fluctuating load is received by the guide member and the engaging member of the positioning means, and the transporting means does not tilt, and the article moves between the transporting means and the storage shelf. Stablely passed between.

At this time, the vertical displacement of the slide fork is performed by moving the engaging member from the first guide groove of the guide member to the second guide groove or in the opposite direction.
At the stage when the engaging member is engaged with the first guide groove portion which is a horizontal groove, the weight of the transporting means and the vehicle is not applied to the engaging member or the guide member on the transporting means side, and the engaging member is engaged. Is only the sliding resistance when moving in the first guide groove, and therefore, the power required for the engagement member to move in the first guide groove may be a small power. Therefore, at this stage, the rod connecting portion of the crank arm is located between the inclined position at a position away from the center of rotation of the arm with respect to the engaging member or the guide member and the position where the rod connecting portion is raised almost at a right angle, By combining the time when a large power is required to rotate the crank arm, the engagement and disengagement between the engagement member and the guide member can be efficiently performed with low power.

On the other hand, when the engaging member is engaged with the second guide groove which is an inclined groove, the engaging member moves on the second guide groove on the engaging member or the guide member on the side of the conveying means. In addition to the sliding resistance at the time, the weight of the transport means and the vehicle is increased,
Therefore, a large power is required for the engagement member to move in the second guide groove. Therefore, at this stage, the rod connecting portion of the crank arm is located between the raised position and the inclined position closer to the engagement member or the guide member than the center of rotation of the arm, and the crank arm By combining the time when only a small amount of power is required to rotate the guide member, the engagement and disengagement between the guide member and the engagement member can be efficiently performed with low power.

According to a second aspect of the present invention, in the first aspect of the present invention, the positioning means is provided so as to position the four corners of the conveying means, and the engaging members or guide members at the four corners on the conveying means side are provided. Among them, each of the engaging member or the guide member on the side of the storage shelf on which articles are to be carried in and out is connected to both ends of a single crank arm via rods, and the longitudinal center of the crank arm is Is connected to an output shaft of a rotary drive source, and is driven by the rotary drive source so that the engaging members or guide members on both sides advance and retreat in synchronization.

According to the above construction, the transporting means is stabilized by the engaging members or guide members provided at the four corners thereof and the four guide members or engaging members of the storage shelves on both sides. It is supported horizontally. In addition, since the engagement and disengagement between the engagement member and the guide member are efficiently performed with low power as described above, the engagement member or the engagement member on both sides of the conveying means can be provided by a single crank arm, that is, one rotational drive source. Even if the guide member is moved, a large-capacity rotary drive source is not required.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 6 shows an elevator-type multi-story parking device of a lower entry type as an article storage device according to an 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 the left and right sides of a space excluding a lower end portion and an upper end portion inside the building 1. A pallet P on which a vehicle C as an article to be stored is mounted is placed on the storage shelf 3.

Between the storage spaces 2 on the left and right sides,
An elevator hoistway 4 is provided as a transport path extending in the vertical direction. The elevator hoistway 4 includes an elevator 5
The lifting platform 6 serving as a transporting means 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. When the loading / unloading (in / out), the lifting platform 6 is moved. The vehicle C is lifted to the side of the target storage shelf 3 and the vehicle C is transferred to and from 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 the driven pulleys 8 and the driving pulley 9 are provided inside the building 1. The space at the upper end portion is set in the machine room 11 as a machine room 11.

At the lower end of the building 1, an entrance / exit opening 12 for the vehicle C to enter / exit is formed.
Vehicle entrance / exit space 13 following the elevator hoistway 4
Is provided. A pit 14 is recessed in the floor at the lower end of the elevator shaft 4, and a vehicle turning device 17 having a turntable 16 provided on a base body 15 is installed in the pit 14. By operation, the direction of the vehicle C that has entered the pallet P on the turntable 16 is changed in direction.

As shown in FIG. 7 and FIG.
Is a steel structure assembled by steel materials such as four pillars 18 standing on the ground, a number of beams 19 bridged horizontally between adjacent pillars 18, and the outside of the steel structure. Each of the storage shelves 3 is composed of two shelf rails 3a provided horizontally on both sides of each of the storage spaces 2.
7 and 8, reference numeral 20 denotes a shelf column to which one end of each of the shelf rails 3a is attached.

The elevator 6 comprises an elevator main body 23 framed by two vertical frames 21 and two horizontal frames 22. In the middle of the elevator main body 23, two vertical A support frame 26 framed by a frame 24 and two horizontal frames 25 is mounted movably upward with respect to the elevator main body 23.
A receiving portion 27 for mounting and supporting the pallet P between the vehicle C and the vehicle turning device 17 when the vehicle C changes direction is mounted. A support frame 28 is attached to both 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 the support frame 28, and the elevator 6 is suspended and supported by the elevator hoistway 4. Guide rollers 29, 29 are supported on both ends of each support frame 28 by brackets 30, and these guide rollers 29
The flange 20a is engaged with the flange 20a of the H-section steel, which is the shelf 20, and the flange 20a is rolled up and down with the elevating operation of the elevating platform 6 to guide the elevating platform 6 up and down.
When transferring the vehicle C between the elevator 6 and the storage shelf 3,
The horizontal movement of the elevator 6 due to the horizontal movement of the guide member 46 described later is restricted by the flange 20a of each shelf 20 so that the horizontal position of the elevator 6 is maintained. . At the front end (lower end in FIG. 7) of the elevator platform main body 23 on the vehicle entry / exit side, an entry / exit deck 31 on which the vehicle C and a person get on / off is provided.

A pair of horizontally extending and retractable slide forks 32 are installed inside the two 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 together with the pallet P to move up and down the elevator hoistway 4.

Each of the slide forks 32 includes a base fork 33 comprising two parallel base frames 33a fixed to the vertical frame 21 of the lift base body 23, and a plurality of base forks 33a are provided inside each of the base forks 33a. Are rotatably mounted at predetermined intervals.

On the base fork 33, a middle fork 36 composed of two parallel middle frames 36a is movably supported. Both middle frames 36a are guided by the guide rollers 34, 35 of the base fork 33. The base fork 33 advances and retreats.

On the middle fork 36, a top fork 37 on which an empty pallet P or an on-board pallet P is mounted is movably supported. Guide rollers 34, 35 are rotatably mounted at predetermined intervals, and advance and retreat operations of the top fork 37 with respect to the middle fork 36 are performed by the guide rollers 34, 3 respectively.
5 guides you.

The middle fork 36 and the top fork 37 are formed of a known chain sprocket drive mechanism (not shown in Japanese Patent Application Laid-Open No. Hei 8-31060 filed earlier by the present applicant).
No. 8), and is driven and connected to the output shaft of a first drive motor 38 to stop the elevator 6 at the side of the storage shelf 3 when loading / unloading the vehicle C (the on-board pallet P). The middle fork 3 is driven by the forward / reverse operation of the drive motor 38.
6 and the top fork 37 are moved forward and backward on one side of the storage shelves 3 on both sides thereof, and the forward and backward movement,
The vehicle C (vehicle pallet P) is exchanged between the elevator 6 and the storage shelf 3 by the telescopic operation of 2 and the vertical movement by the positioning device 52 described later. FIG.
Among them, reference numerals 39, 40 and 41 denote sprockets which constitute a part of the chain sprocket drive mechanism, and reference numeral 42 denotes a chain wound around the sprockets 39, 40 and 41.

As shown in detail in FIG. 1, on both shelf columns 20 on the side of each of the storage shelves 3, rollable rollers 43 as engaging members correspond to the respective storage shelves 3 by mounting brackets 44. On the other hand, slide guides 45 are attached one by one to both ends of the two front and rear support frames 28 on the side of the elevator 6, and a plate-like guide member 46 is movably mounted on these slide guides 45. Are located.
A guide groove 47 for engaging and guiding the roller 43 is formed at the tip of the guide member 46.
A first guide groove 47a extending in the horizontal direction;
A second guide groove 47b that is continuous with the guide groove 47a and extends obliquely downward toward the inside of the groove, and a third guide groove 47c that is continuous with the second guide groove 47b and extends in the horizontal direction, is formed of the first guide groove 47a. The open end is formed with a tapered surface 47d that increases the groove width outward.

In the center of the two front and rear support frames 28 on the lift 6 side, a second drive motor 48 as a rotary drive source is provided.
The center of the single crank arm 49 in the longitudinal direction is connected to the output shaft 48a of the second drive motor 48, and the crank arm 49 is rotated by the second drive motor 48 in forward and reverse rotations. It is designed to rotate forward and reverse. One end of each of two rods 50 is connected to both ends of the crank arm 49, respectively.
The other end of the guide member 46 is connected to the base end of the guide member 46 at both ends of the support frame 28 via a connecting member 51, and converts the rotation of the crank arm 49 into a horizontal reciprocation of the guide member 46 by the rod 50. ing.

Therefore, the second drive motor 48, the crank arm 49 and the rod 50 constitute a crank mechanism 52.

The most significant feature of the present invention is that the rod connecting portion 49a of the crank arm 49 has an arm with respect to the guide member 46 when the roller 43 is engaged with the first guide groove 47a of the guide member 46. It is located between a tilted position (85 °) at a position distant from the rotation center O and a position (110 °) raised almost at a right angle (FIG. 3A,
(See (b).) On the other hand, the roller 43 is the second member of the guide member 46.
When engaged with the guide groove 47b, it is located between the raised position and the inclined position closer to the guide member 46 than the arm rotation center O (FIG. 4A). , (B)).

In the former case, such a positional relationship is set in the guide member 46 on the side of the elevator 6.
The weight of the vehicle C is not applied, and only the sliding resistance when the roller 43 moves in the first guide groove 47a is applied. Therefore, the power required for the roller 43 to move in the first guide groove 47a is applied. Needs less power. Therefore, at this stage, the rod connecting portion 49a of the crank arm 49 is
Is located between the inclined position (50 °) at a position distant from the arm rotation center O with respect to the guide member 46 and a position (85 °) raised almost at a right angle, and rotates the crank arm 49. By combining the time when a large power is required, the engagement and disengagement of the guide member 46 and the roller 43 can be efficiently performed with low power. On the other hand, in the latter case, in addition to the sliding resistance when the roller 43 slides in the second guide groove 47b, the weight of the elevator 6 and the vehicle C is applied to the guide member 46 on the elevator 6 side. Therefore, a large power is required for the roller 43 to move in the second guide groove 47b. Therefore, at this stage, the rod connecting portion 49a of the crank arm 49 is located between the raised position and the inclined position closer to the guide member 46 than the arm rotation center O. By combining the case where only a small amount of power is required to rotate the 49, the engagement and disengagement of the guide member 46 and the roller 43 can be efficiently performed with low power.

Then, the guide member 46 on the lift base 6 side is moved forward and backward by the forward / reverse operation of the crank arm 49 by the activation of the second drive motor 48 to move the storage shelf 3.
The vehicle loading level Lf as the article loading level of the slide fork 32 by engaging and disengaging with the roller 43 on the side.
(See FIGS. 9 and 10) The upper position higher than the vehicle mounting level Lt (see FIGS. 9 and 10) as the article mounting level of the storage shelf 3 and the lower position lower than the vehicle mounting level Lt. It is displaced.

Therefore, the connecting member 51 and the guide member 4
6 and the crank mechanism 52 constitute a positioning device 53 as positioning means.

The positioning devices 53 are installed one by one before and after the elevating table 6, and one set of the rod 50 and the guide member 4 are provided.
The two storage shelves 6 are provided at predetermined intervals on the storage shelf 3 side where the vehicle C is to be loaded and unloaded and on the opposite storage shelf 3 side so as to position the four corners of the lift 6. And
With the lift 6 stopped at the side of the storage shelf 3, the four guide members 46 at the four corners of the lift 6 are rotated forward by the second drive motor 48. The slide fork 32 is moved forward and backward in synchronism with the reverse rotation operation, and the roller 43 is engaged with the first to third guide grooves 47a to 47c using the tapered surface 47d of the guide groove 47 as a guide. The vehicle mounting level Lf is displaced to a position lower than the vehicle mounting level Lt of the storage shelf 3, or conversely, the two slide forks 3
The vehicle mounting level Lf is displaced to a position higher than the vehicle mounting level Lt.
Positioning is performed in stages.

Next, a description will be given of a procedure for loading and unloading the vehicle C in the elevator-type multi-story parking device configured as described above.

<Incoming> First, the entering vehicle C entering the vehicle entering / exiting space 13 from the entering / exiting opening 12 gets on the empty pallet P on the elevator 6 of the elevator 5 waiting to descend and can exit in preparation for exiting, that is, exiting forward. After the direction of the vehicle C is changed by the operation of the vehicle turning device 17 as described above, the elevator 6 is raised to the side of the storage shelf 3 to be stored (see FIG. 9A). In this state, the vehicle mounting level Lf of the slide fork 32 is equal to the storage shelf 3 (shelf rail 3).
It is located below the vehicle mounting level Lt of a).
The four guide members 46 provided at the four corners of the lift 6 are retracted so as not to interfere with the rollers 43 on the storage shelf 3 side.

Next, the two front and rear second drive motors 48 are synchronously rotated forward to cause the four guide members 46 to advance toward the storage shelves 3 on both sides, and the first guide grooves 47a of the respective guide members 46 are provided. And the third guide groove 47 through the second guide groove 47b.
c at a stretch (see FIG. 9B). As a result, the vehicle mounting level Lf of each slide fork 32 becomes higher than the vehicle mounting level Lt of the storage shelf 3, and in this state, the lifting platform 6 is horizontally and stably positioned from all directions by the two front and rear positioning devices 53. Is done. In the initial stage of this engagement, the roller 43 is driven by the tapered surface 47 of the guide groove 47.
d, the roller 43 can be smoothly and securely engaged with the guide groove 47 (the first guide groove 47a).

Thereafter, both slide forks 32 are extended by forward rotation of the first drive motor 38, and the incoming vehicle C is transferred to the storage space 2 together with the pallet P (FIG. 9 (c)).
reference). At this time, since the slide fork 32 is located at a distance above the storage shelf 3 as described above, interference with the storage shelf 3 during transfer can be prevented. In addition, since the load rises on the lift 6 due to the extension of both slide forks 32, since the lift 6 is positioned from the four directions by the two front and rear positioning devices 53 as described above,
The tilting of the elevator 6 can be prevented by receiving the load variation by each positioning device 53, and the entering vehicle C can be stably transferred between the elevator 6 and the storage shelf 3.

Thereafter, the guide members 46 are retracted by the reverse rotation of the second drive motor 48, and the rollers 43 are moved from the third guide grooves 47c of the guide members 46 to the first guide grooves 47b via the second guide grooves 47b. Switching engagement is performed with the switch 47a (see FIG. 9D). As a result, the vehicle mounting level Lf of each slide fork 32 becomes lower than the vehicle mounting level Lt of the storage shelf 3, and the incoming vehicle C is transferred to the storage shelf 3 with the pallet P. As described above, the vertical displacement of the slide fork 32 at the time of delivery of the incoming vehicle C can be switched between two stages by the positioning operation of the positioning device 53.

Thereafter, the slide forks 32 are contracted by the reverse rotation of the first drive motor 38 (FIG. 9).
(E)), the guide members 46 are connected to the second drive motor 4.
8, the rollers 43 are separated from the guide grooves 47 by further reversing operation (see FIG. 9 (f)), and when there is a storage, the elevator 6 is stored in the empty pallet P. While raising and lowering to the side of the shelf 3, if there is a warehouse, the elevator 6 is moved up and down to the side of the storage shelf 3 where the target vehicle C is stored.

<Exiting> First, the empty elevator 6 is moved out of the exiting vehicle C.
Is moved up and down to the side of the storage shelf 3 where is stored. In this state, the vehicle mounting level Lf of the slide fork 32 is located lower than the vehicle mounting level Lt of the storage shelf 3 (shelf rail 3a). The four guide members 46 provided at the four corners of the lift 6 are retracted so as not to interfere with the rollers 43 on the storage shelf 3 side (see FIG. 10A).

Next, the front and rear two second drive motors 48 are synchronously driven to rotate forward to cause the four guide members 46 to advance toward the storage shelves 3 on both sides, and to be inserted into the first guide grooves 47a of these guide members 46. Engage (see FIG. 10 (b)). As a result, the elevator 6 is horizontally positioned stably from four directions by the two positioning devices 53 in front and rear. In the initial stage of this engagement, the roller 43 is driven by the tapered surface 4 of the guide groove 47.
7d, the roller 43 is inserted into the guide groove 47 (first
The guide groove 47a) can be smoothly and reliably engaged with the guide groove 47a).

Thereafter, both slide forks 32 are extended by the forward rotation of the first drive motor 38 (FIG. 10).
(C)). At this time, since the slide fork 32 is positioned at a distance below the storage shelf 3 as described above, interference with the storage shelf 3 during transfer can be prevented.

Thereafter, the guide members 46 are further advanced by the further forward rotation of the second drive motor 48.
Each roller 43 is switched from the first guide groove portion 47a of each guide member 46 to the third guide groove portion 47c via the second guide groove portion 47b (see FIG. 10D). As a result, the vehicle mounting level Lf of each slide fork 32 becomes higher than the vehicle mounting level Lt of the storage shelf 3, and the outgoing vehicle C is delivered to the slide fork 32 together with the pallet P. At this time, a load change occurs on the lift 6 due to the loading of the sliding fork 32 by the loading vehicle C, but since the lift 6 is positioned from the four directions by the two front and rear positioning devices 53 as described above, the load change Can be received by each positioning device 53 to prevent the tilting of the elevator 6 and the delivery vehicle C can be stably transferred between the elevator 6 and the storage shelf 3.

After that, the slide forks 32 are contracted by the reverse rotation of the first drive motor 38 to transfer the retrieval vehicle C to the lift 6 (see FIG. 10 (e)). The roller 43 is retracted by the reverse rotation start of the second drive motor 48, and each roller 43 is moved to the third guide groove portion 4 of the guide groove 47.
7c through the second guide groove 47b and the first guide groove 47a at once (see FIG. 10 (f)), the elevator 6 is lowered into the vehicle entrance / exit space 13 and exits from the entrance / exit opening 12. 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. In this state, the warehousing vehicle C is mounted and warehousing is performed in the manner described in the above-mentioned <warehouse>.

In the above-described example of loading and unloading, in the state where the elevator 6 is ready for delivery on the side of the storage shelf 3, FIG.
2A, the guide member 46 is not engaged with the roller 43, and the angle of the crank arm 49 is in the state shown in FIG.
2A is located at a position inclined from the guide member 46 by 50 ° at a position on the left side of FIG. Naturally, the load on the guide member 46 and the load power of the second drive motor 48 are zero (see FIG. 2C). From this state, as shown in FIG.
When the first guide groove 47a of FIG. 6 engages with the roller 43, the crank arm 49 rises from the position inclined at 50 ° to approximately 85 °, and the rod connecting portion 49a of the crank arm 49 approaches the guide member 46. It is located in a place. In this case, only the sliding resistance W · μ when the roller 43 moves in the first guide groove 47a is applied to the guide member 46 as a load, and the roller 43 is required to move in the first guide groove 47a. The load power of the second drive motor 48 may be a small power (see FIG. 3C). On the other hand, in order to rotate the crank arm 49 and raise it, the second drive motor 48 needs large power,
By setting such a combination, the guide member 46
The engagement and disengagement between the roller and the roller 43 can be performed efficiently with low power. While the roller 43 moves in the first guide groove 47a, the crank arm 49 rotates from 85 ° to 110 °. As shown in FIG. 5, the third guide groove 4 of the guide member 46
The same applies when the roller 7c is engaged with the roller 43.

In this state, when the second guide groove 47b of the guide member 46 is engaged with the roller 43 as shown in FIG. 4A, the roller 43 is connected to the second guide groove 47b of the guide member 46. In addition to the sliding resistance W · μ when moving, the weight W · Tan α of the lift 6 and the lift 6
Is moved by the second drive motor 4 in the second guide groove 47b.
The load power of No. 8 requires a large power (see FIG. 4C). On the other hand, in order to rotate the crank arm 49 from its posture and turn it down, the power of the second drive motor 48 requires only a small power, and by setting such a combination, the engagement between the guide member 46 and the roller 43 is reduced. -The detachment can be performed efficiently with low power. While the roller 43 moves in the second guide groove portion 47b, the crank arm 49 is set at 110 °.
(See FIG. 4B).

Also, since low power is achieved in this way, a single crank arm 49, that is, one second
Even if the guide members 46 on both sides of the elevator 6 are moved by the drive motor 48, there is an advantage that the second drive motor 48 does not need to have a large capacity.

FIG. 11 shows a crank mechanism 5 as a first modification.
2 is shown. In the first modification, the side of the crank 50 of the rod 50 is bent in the shape of a letter “H”, and the two rod connecting portions 49 a are located on the opposite side by 180 °. As a result, the crank arm 49 rotates by 180 °, so that the moving distance of the guide member 46 can be increased as compared with the first embodiment, and the size of the second drive motor 48 can be reduced.

FIG. 12 shows a positioning device 5 according to a second modification.
3 is shown. In this modified example 2, the roller 43 as an engaging member is attached to the lift 6
0, a guide member 46 having a guide groove 47 is attached.
The forward rotation of the drive motor 48 causes the roller 43 to advance in the horizontal direction so that the roller 43 is engaged with the guide groove 47. In the second modification, the second guide groove portion 47b of the guide groove 47 is inclined obliquely upward toward the groove depth in order to perform the same loading / unloading operation as in the above-described embodiment. Otherwise, the configuration is the same as that of the above embodiment. Therefore, this modified example 2
Can achieve the same functions and effects as the embodiment.

In each of the above examples, the rollable roller 43 is used as the engaging member, but a slidable pin may be used.

Further, in each of the above examples, the case where the article storage device is an elevator-type multi-story parking device has been described. However, the present invention is not limited to this and can be applied to a storage device that stores all other items. is there.

[0053]

As described above, according to the present invention, one of the engaging member and the guide member on the side of the conveying means is connected to the crank arm of the crank mechanism and is advanced by the operation of the crank mechanism. Either the engaging member or the guide member on the storage shelf side is engaged with the first guide groove and the second guide groove, and the article mounting level of the slide fork on the transporting means is higher than the article mounting level of the storage shelf. When the transporting means is positioned in two stages, upper and lower, so as to be displaced between a high upper position and a lower position lower than the article mounting level, the engaging member connects the rod connecting portion of the crank arm to the first member of the guiding member.
At the stage of engaging with the guide groove, the engaging member is positioned between a position inclined away from the center of rotation of the arm with respect to the engaging member and a position which is raised almost at a right angle. At the stage of engaging with the second guide groove portion, it is positioned between the raised position and the inclined position closer to the engagement member or the guide member than the center of rotation of the arm. Therefore, the engagement and disengagement between the guide member and the engagement member can be efficiently performed with low power.

[Brief description of the drawings]

FIG. 1 is a front view of a positioning device according to an embodiment.

FIG. 2 (a) is a process diagram before positioning in which a lift table stops at a side of a target storage shelf in a positioning process of one embodiment, FIG. 2 (b) is a diagram showing an angle of a crank arm at that time, and FIG. () Is a graph showing the relationship between the load power of the drive motor and the load acting on the guide member at that time.

FIG. 3A is a process diagram showing a state in which a first guide groove of a guide member is engaged with an engagement roller to start positioning in a positioning process of one embodiment, and FIG. 3B is a crank at that time. FIG. 7C is a graph showing the angle of the arm, and FIG. 7C is a graph showing the relationship between the load power of the drive motor and the load acting on the guide member at that time.

FIG. 4A is a process diagram showing a state in which positioning is progressing with a second guide groove of a guide member being engaged with an engagement roller in a positioning process of one embodiment, and FIG. FIG. 7C is a graph showing the angle of the crank arm, and FIG. 7C is a graph showing the relationship between the load power of the drive motor and the load acting on the guide member at that time.

FIG. 5A is a process diagram showing a state where the third guide groove of the guide member is engaged with an engaging roller and positioning is completed in a positioning process of one embodiment, and FIG. 5B is a process diagram of the crank arm at that time. FIG. 7C is a graph showing the relationship between the load power of the drive motor and the load acting on the guide member at that time.

FIG. 6 is a schematic configuration diagram of an elevator multi-story parking device as an article storage device according to one embodiment.

FIG. 7 is a cross-sectional plan view of an elevator-type multi-story parking device as an article storage device according to one embodiment.

FIG. 8 is a front view of a lifting platform according to one embodiment.

FIGS. 9A to 9F are operation explanatory diagrams showing a delivery procedure at the time of vehicle entry in one embodiment.

FIGS. 10A to 10F are operation explanatory diagrams showing a delivery procedure at the time of leaving the vehicle in one embodiment.

FIG. 11 is a view corresponding to FIG. 1 showing a crank mechanism as a first modification;

FIG. 12 is a schematic configuration diagram illustrating a positioning device as a second modification.

[Explanation of symbols]

 Reference Signs List 3 storage shelf 4 elevator hoistway (conveyance path) 6 elevating platform (conveyance means) 32 slide fork 43 roller (engagement member) 46 guide member 47 guide groove 47a first guide groove 47b second guide groove 48 second drive motor ( Rotational drive source) 48a Output shaft 49 Crank arm 49a Rod connecting part 50 Rod 52 Crank mechanism 53 Positioning device (Positioning means) C Vehicle (article) O Arm rotation center Lf Vehicle mounting level (Article mounting level) Lt Vehicle mounting level ( Article loading level)

Claims (2)

[Claims] 1. A conveying path extending in a vertical direction, a slide fork which is extendable and contractible in a horizontal direction, a conveying means for mounting an article on the slide fork and moving up and down the conveying path, and provided on a side of the conveying path. In the state where the transport means is stopped on the side of the storage shelf, an upper position where the article mounting level of the slide fork is higher than the article mounting level of the storage shelf and a lower position which is lower than the article mounting level. Positioning means for positioning the transport means in two stages up and down so as to be displaced to and from the position, when the articles are carried in and out, the transport means is stopped at the side of the storage shelf, and the telescopic operation and the vertical operation of the slide fork An article storage device configured to perform delivery of articles between a transport unit and a storage shelf according to the above, wherein the positioning unit is provided on either the transport unit side or the storage shelf side. An engaging member, a first guide groove provided on the other side of the transport means side or the storage shelf side, and extending in the horizontal direction, and continuous with the first guide groove and extending obliquely upward or obliquely downward toward the inner side of the groove. Second
A guide member provided with a guide groove having a guide groove portion, the guide member engaging and engaging the engaging member in the guide groove, a rotation drive source provided on the side of the conveyance means, and coupled to the rotation drive source; And a rod that connects the crank arm and an engaging member or a guide member on the side of the conveying means to convert the rotating operation of the crank arm into a horizontal reciprocating operation of the engaging member or the guide member. The forward / backward rotation of the crank arm causes the engaging member or guide member on the side of the transport means to advance and retreat in the horizontal direction to engage / disengage with the guide member or engaging member on the side of the storage shelf. A crank mechanism configured to shift the article mounting level of the storage arm to an upper position higher than the article mounting level of the storage shelf and a lower position lower than the article mounting level of the storage shelf; When the engaging member is engaged with the first guide groove of the guide member, the portion rises substantially at right angles to the inclined position at a position away from the arm rotation center with respect to the engaging member or the guide member. And at the stage where the engaging member is engaged with the second guide groove of the guide member, a position closer to the engaging member or the guide member than the center of rotation of the arm. An article storage device characterized by being located between the inclined position of the article. 2. The article storage device according to claim 1, wherein the positioning means is provided so as to position the four corners of the transport means, and the article is carried in and out of the engaging members or guide members at the four corners on the transport means side. The engaging member or the guide member on the side of the storage shelf to be tried and the opposite side thereof are respectively connected to both ends of a single crank arm via rods, and the center of the crank arm in the longitudinal direction is the output of the rotary drive source. An article storage device, which is connected to a shaft, and is configured to advance and retreat in synchronization with the engagement members or the guide members on both sides by driving the rotation drive source.