JP3189079B2 - Multi-stage multilevel parking system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a multi-stage multi-story parking device, and more particularly, to a countermeasure for raising and lowering a pallet elevating body having pallets mounted on a vehicle in multiple stages.

[0002]

2. Description of the Related Art Conventionally, as a multi-stage multi-story parking device of a type in which upper and lower pallets are integrally lifted and lowered, as disclosed in, for example, Japanese Patent Publication No. 5-34468,
Two pallet elevators integrally having pallets in two upper and lower stages are arranged in a pit so as to be able to ascend and descend in a pit, and one pallet driving device installed between the two pallet elevators is driven to thereby drive pallets on both sides thereof 2. Description of the Related Art A multi-stage (two-stage) multi-story parking device that switches the elevating operation of an elevating body is known.

[0003] In other words, in this two-stage multi-story parking device, when loading / unloading the upper pallets of each pallet lift,
The lower pallets touch the bottom of the pit, and each pallet lift is lowered so that the upper pallets are positioned at substantially the same level as the vehicle entry surface. On the other hand, at the time of loading / unloading of the lower pallet, each pallet lifting member is raised so that the lower pallet is located at substantially the same level as the vehicle entry surface and the upper pallet is located above the vehicle entry surface.

The lifting drive device for lifting and lowering each of the pallet lifting members is provided with a chain drive mechanism in which two endless chains are wound around a pair of upper and lower sprockets at the front and rear. Two pallet hooks are bridged between the endless chains so as to stand out, and one of the two pallet hooks is attached from below to the hooks provided at the front and rear two places on the inner side of the lower pallet of each pallet lifting body. The upper and lower pallets are moved up and down by the balance chain while maintaining the horizontal state of the upper and lower pallets.

[0005]

By the way, in the above-mentioned conventional two-stage type multi-story parking device, two pallet hooks are bridged between both endless chains of each chain drive mechanism, and the lower sprocket is bounded. While the pallet latch on the right side is dedicated to lifting and lowering the right pallet lifting body,
The pallet latch on the left side is used exclusively for raising and lowering the left pallet lifting body. Therefore, when one pallet hook is involved in raising and lowering the pallet lifting body,
The other pallet hooking tool follows the one pallet hooking tool, moves up and down, and is always idle. While one pallet lifter is moving up and down, considering that the other pallet lifter is placed on the bottom of the pit, there is no inconvenience even if one pallet hook is idle, but there is always one pallet lifter. It is uneconomical to provide two hooks only when they are involved in raising and lowering the pallet elevating body, and if one pallet hanger can move the pallet elevating bodies on both sides, the number of parts is reduced. It is economical.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and an object of the present invention is to raise and lower a pallet elevating body on both sides with one pallet hook, so that the pallet hook is not involved in lifting. The object is to eliminate the uneconomical effects of the above and to reduce the number of parts.
A further object of the present invention is to reduce the load on the chain drive mechanism by equally applying the weight of the pallet and the vehicle to the two endless chains to which the pallet hook is bridged.

[0007]

In order to achieve the above-mentioned object, the present invention provides at least two pallet elevating bodies which are vertically arranged in a pit and have pallets mounted on a vehicle in multiple stages. A balance means for guiding each pallet elevating body up and down while maintaining the horizontal state of each pallet; and an elevating drive means provided between adjacent pallet elevating bodies in the pit and for elevating each pallet elevating body. Prepared,
By the drive of the lifting / lowering drive means, at the time of loading / unloading of the upper pallets of the respective pallet lifting members, each pallet is brought into contact with the bottom surface of the pit and the upper pallet is positioned at substantially the same height level as the vehicle entry surface. While lowering the elevating body, at the time of loading / unloading of the lower pallet, each pallet elevating body is raised so that the lower pallet is located at substantially the same height level as the vehicle entry surface and the upper pallet is located above the vehicle entry surface. The following solution was taken for the multi-level multi-story parking system.

That is, the solution of the present invention employs a chain drive mechanism comprising a pair of upper and lower sprockets with two endless chains wound around the front and rear sprockets. Further, one pallet hook is connected to both endless chains of each chain drive mechanism so as to stand between the two endless chains. On the other hand, hooks for engaging with the pallet hooks are provided at two positions before and after the lower pallet in the respective pallet elevating bodies on the side of the elevating drive means. Further, the pallet hook is provided on both upper and lower surfaces with engagement surfaces for engaging the hook from below, and both endless chains of the chain drive mechanism are provided at both ends of the engagement portion. A pair of chain insertion portions having a U-shaped cross-section so that they can be inserted in the vertical direction as described above, and a connection pin for connecting the above-mentioned engagement portion, both chain insertion portions, and both endless chains by skewering. Then, the pallet hook is moved to the pallet elevating body side where the lower sprocket is to be turned upside down by driving of the chain driving mechanism at the time of loading and unloading, and the engaging portion is engaged with the hook of the pallet elevating body. The engagement surface facing upward is engaged from below.

[0009]

According to the above construction, in the solution of the present invention, by driving the lifting drive means between the adjacent pallet lifting bodies arranged in parallel in the pit, the front and rear chain drive mechanisms constituting the lifting drive means are driven. Two endless chains respectively wound around a pair of upper and lower sprockets are driven in the vertical direction in synchronization with each other, and one pallet hooking device bridged by both endless chains attempts to enter and exit the warehouse. The pallet lifting body moves in reverse through the lower sprocket through the lower sprocket, and the upper and lower engaging surfaces of the engaging portions of the pallet hooks engage with the hooks before and after the lower pallet. The pallet is moved up and down while holding the horizontal state of the upper and lower pallets by means.

As described above, one pallet hook is bridged to the two endless chains wound around the pair of upper and lower sprockets, and the pallet hook is lowered toward the pallet lifting / lowering body side for loading and unloading. Since it is inverted through a sprocket and engaged with the hook of the pallet lift from below, one pallet hook is shared as a pallet hook for the pallet lifts on both sides by inversion operation, The number of parts is halved compared to the case of the publication example in which two pallet hooks are provided on two endless chains. That is, in the case of the publication example, a total of four pallet hooks are required for each of the front and rear chain drive mechanisms, but in the present invention, a total of two pallet hooks are provided for each of the front and rear chain drive mechanisms. One.

Further, since only one pallet hook is required for one chain drive mechanism, there is no pallet hook which is not involved in lifting and lowering, thereby eliminating uneconomical effects.

Furthermore, the two endless chains are vertically inserted into insertion grooves of a pair of chain insertion portions provided at both ends of the engaging portion of the pallet hook, and are surrounded by the two chain insertion portions. It is skewered and connected by a connecting pin together with the engaging portion and both chain insertion portions. When the pallet elevating body is moved up and down, the engagement surface of the engaging portion of the pallet hook that faces upward is engaged from below with a hook of the pallet elevating body to be moved up and down.

From this, the weight of the pallet and the vehicle is equally applied to the two endless chains, and the weight of the pallet and the like is evenly distributed on both sides of each endless chain by each of the chain insertion portions surrounding the endless chain. And the load on the chain drive mechanism is reduced.

[0014]

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

FIGS. 1 to 4 show a multi-stage (two-stage) multi-story parking device A according to an embodiment of the present invention. The two-stage multi-story parking device A is installed in a flat rectangular pit 2 that is recessed in a floor 1 as a vehicle entry surface, and a safety fence 3 stands up around the pit 2 except for the entrance / exit side. On the other hand, a security chain 4 is stretched horizontally at the entrance / exit side so that it can be removed when entering / exiting.

In the pit 2, two pallet lifting members 5, 6 are juxtaposed so as to be vertically movable. Each of the pallet lifting members 5, 6 connects an upper pallet P1 and a lower pallet P2 for mounting on a vehicle. Four pallet support frames 7, 7, ...
The upper and lower pallets P1, P2 are integrally lifted and lowered together. Both upper and lower pallets P1,
Two pallet receiving beams 8, 8 extending in the width direction are attached to the back surface of the lower pallet P2 at predetermined intervals in the front-rear direction, and two guide sprockets 9, 9 are attached one by one.

On the other hand, as shown in FIG. 5 (the upper pallet P1 is omitted), four auxiliary columns 10, 10,... Balance chain 1 as a balance means at the upper end of pillar 10
The balance chain 11 is fixed to one end of the lower pallet P2 of the lower pallet P2 along the pallet receiving beam 8 from above the guide sprocket 9 of the both guide sprockets 9, 9 which is closer to the outside of the pit 2. It extends in the width direction, is wound around the guide sprocket 9 near the inside of the pit 2 from above, and is fixed to the bottom surface of the pit 2. The pallet lifters 5 and 6 are connected to the upper and lower pallets P1, P2 by the two front and rear balance chains 11, 11, respectively.
It is designed to guide up and down while keeping the horizontal position of 2.

Two main pillars 12, 12 are erected at predetermined intervals in front and rear between the adjacent pallet lifting bodies 5, 6 in the pit 2. Among the two main pillars 12, 12, The geared motor with brake 1
3 is installed and arranged on a mounting base 14, and a drive sprocket 16 having two rows of teeth is attached to an output shaft 15 of the geared motor 13 with brake. On the other hand, a shaft 17 is bridged at the upper ends of the main pillars 12, 12, and two driven sprockets 18, 18 are arranged in front of the shaft 17, and the driven sprocket 18 and the driving sprocket 16 are connected to each other. Is wound around a drive chain 19 composed of two endless chains.

As shown in detail in FIG.
Reference numeral 2 denotes a structure in which the opening sides of two columns 20 and 20 made of a shape steel having a substantially C-shaped cross section face each other.
Both ends of the shaft 17 are fitted in the space between the zeros, and two upper sprockets 21 and 21 are juxtaposed in the fitted portion. At the lower end of the space between the two columns 20, 20, two lower sprockets 22, 22 are also provided in parallel.
The pair of upper and lower sprockets 21 and 22
Are wound with two endless chains 23, 23. The upper sprocket 21, the lower sprocket 22, and the endless chain 23 constitute a chain drive mechanism 24. The chain drive mechanism 24 is provided on the front and rear main columns 12, 12, respectively. The front and rear chain drive mechanisms 24, 24, the geared motor with brake 13, the drive sprocket 16,
The driven sprocket 18, the drive chain 19, the shaft 17, and the like constitute an elevation drive device 25 as elevation drive means for elevating each of the pallet elevating bodies 5, 6.

As shown in enlarged detail in FIG. 7, one of the endless chains 23, 23 of each chain drive mechanism 24 is provided with one pallet hook 26 as a feature of the present invention. On the other hand, hooks 27 engaging with the pallet lifting members 5 and 6 are provided at two positions before and after the lower pallet P2 of the pallet lifting members 5 and 6 on the side of the lifting drive device 25 side. , 27 are attached.

The geared motor with brake 1
3 and the driving and driven sprocket 1
The pallet latch 26 is turned over by inverting the lower sprocket 22 by transmitting to the shaft 17 via the shafts 6 and 18 and further to the front and rear chain drive mechanisms 24 and 24 to drive the respective chain drive mechanisms 24 synchronously. The pallet lifters 5 and 6 are moved toward the respective pallet lifters 5 and 6, and the hooks 27 of the pallet lifters 5 and 6 are engaged from below with an engagement surface 28 a facing upward of an engagement portion 28 described later. The pallet lifting members 5 and 6 are raised and lowered together.

That is, the two-stage multi-story parking device A of the present embodiment.
When the pallet elevators 5 are driven in and out of the upper pallet P1, the lower pallet P2 is in contact with the bottom of the pit 2 and the upper pallet P1 is substantially at the same height as the floor surface 1. The pallet hooks 26 are engaged with the hooks 27 to lower the pallet lifting members 5 and 6 so that the lower pallet P2 is moved in and out of the lower pallet P2.
2 is located at approximately the same level as floor 1,
Each pallet hooking tool 26 is engaged with each hook 27 so that the upper pallet P1 is located above the floor surface 1 so that each pallet lifting member 5, 6 is raised.

As described above, in the two-stage multi-story parking device A of the present embodiment, the chain drive mechanisms 24, 24 are driven forward or reverse by the switching drive of the lift drive device 25, thereby raising and lowering the pallet on one side. The pallet lifting members 5 and 6 on the other side are raised and lowered in a state where the bodies 5 and 6 are separated from the respective pallet hooks 26 and grounded, so that the vehicle C enters and leaves the pallet lifting members 5 and 6. I have.

As shown in detail in FIGS.
Each of the pallet latches 26 includes an engaging portion 28 having an engaging surface 28a on each of upper and lower surfaces for engaging with each hook 27 from below. A pair of chain insertion portions 29, 29 having a U-shaped cross-section insertion groove 29a penetrating therethrough are integrally formed, and the endless chains 23 of the respective chain drive mechanisms 24 are respectively formed in the insertion grooves 29a of the respective chain insertion portions 29. , 23 are vertically inserted so as to be surrounded. Further, two pin holes 28b, 29b are formed through the engaging portion 28 and both chain insertion portions 29, 29 so that the center of the holes are aligned with each other, and two connecting pins 30 are inserted into each of the pin holes 28b, 29b. , 30 by inserting the engaging portion 28, both chain insertion portions 29, 29 and both endless chains 2.
The pallet hooks 26 are bridged between the endless chains 23, 23.

2 to 4, reference numeral 31 denotes an operation panel provided at the upper end of a column 32 on the side of the entrance / exit port, and 33 denotes a pallet elevating body 5, 6 by cutting the endless chain 23 of the chain drive mechanism 24. Each main pillar 1 to prevent falling
A lowering switch 34 for holding the lower pallet P2 at the height of the floor 1 when the pallet elevating bodies 5, 6 are raised, and a pallet elevating body 35 A lowering stop limit switch 36 for holding the upper pallet P1 at the floor 1 when the wheels 5 and 6 are lowered, and 36 are decks provided on both the left and right sides and the middle of the pit 2. In addition, on both sides of the upper and lower pallets P1 and P2, the backed vehicles C
Brake 37 that stops by engaging the rear wheel so that it does not move
Is provided.

Next, the entry and exit procedures of the two-stage multi-story parking device A configured as described above will be described.

As a premise, as shown in FIG. 2, it is assumed that the left pallet elevating body 5 is supported by the front and rear pallet hooks 26, 26 and is in an up state, and the right pallet elevating body 6 is in a down state. . In this state, both the lower pallet P2 of the left pallet lifting body 5 and the upper pallet P1 of the right pallet lifting body 6 are at substantially the same height level as the floor 1, so that it is possible to carry in and out.

In this state, when entering / leaving the upper pallet P1 of the left pallet lifter 5,
By operating the operation panel 31 to drive the lifting drive device 25, the two endless chains 23 of the chain drive mechanisms 24 are synchronously driven in the counterclockwise direction, and the left pallet lifting body 5 is moved. The supporting front and rear pallet hooks 26, 26 are lowered. Along with this,
The left pallet lifting body 5 is lowered, and this is detected by the descent stop limit switch 35, and the lifting drive device 25 is stopped based on this detection signal. In this state, the upper pallet P1 on the left side of the pallet lifter 5 is positioned at substantially the same level as the floor surface 1 so that it can enter and exit, and the lower pallet P2 is grounded and placed on the bottom of the pit 2.

From this state, when moving in and out of the lower pallet P2 of the right pallet elevating body 6 in the descending state, the operation panel 31 is operated to operate the elevating drive unit 25.
, The chain drive mechanisms 24, 24
The two endless chains 23, 23 are synchronously driven in the counterclockwise direction, and the pallet lifting body 5
Are separated from the hooks 27, and are inverted through the lower sprockets 22 and moved to the right pallet lift 6 side. Then, the engaging surface 2 facing the upper side of the engaging portion 28 of each of the pallet hooks 26
8a is engaged with each hook 27 of the right pallet elevating body 6 from below to support the pallet elevating body 6, and in this state, each pallet hook 26 is raised. As a result, the right pallet lift 6 rises, and this is detected by the lift stop limit switch 34, and the lift drive device 25 stops based on this detection signal. In this state, the upper pallet P1 of the right pallet lift 6 is positioned above the floor surface 1 and the lower pallet P2 is positioned at substantially the same height level as the floor surface 1 so that it can enter and exit the warehouse.

As described above, in this embodiment, the pallet hooks 26 for engaging the hooks 27 of the pallet elevating bodies 5 and 6 on both sides to elevate and lower the pallet elevating bodies 5 and 6 are used to drive the front and rear chains. Since one mechanism is provided for each of the mechanisms 24 and 24 and is commonly used for raising and lowering the left and right pallet elevating bodies 5, 6, two pallet hooks are provided for each of the front and rear chain drive mechanisms and are exclusively used for the left and right. Only half of the pallet hooks 26 are required compared to the case of the publication example, and the number of parts can be reduced by half.

In the above embodiment, the pallet hook 2
6 only needs to be provided for one chain drive mechanism 24, so that the pallet hook 2
It is very economical to get rid of 6.

Furthermore, in the above embodiment, the pair of chain insertion portions 29, 29 at both ends of the pallet hook 26 surround the two endless chains 23, 23, and the pallet hook 26 is connected to both endless chains. The two endless chains 23,2 are bridged to the chains 23,23.
The engaging surface 28a facing the upper side of the engaging portion 28 located between
Are engaged with the hooks 27 of the pallet elevating bodies 5 and 6 from below, so that when the pallet elevating bodies 5 and 6 are raised and lowered, the weights of the upper and lower pallets P1, P2 and the vehicle C are reduced by the above-mentioned two items. The endless chains 23, 23 can be equally hung, and the endless chains 23, 23 are also provided on both sides of the individual endless chains 23, 23.
The upper and lower pallets P1, P2 and the like can be evenly weighted by the respective chain insertion portions 29 surrounding the chain 23, and the load on each chain drive mechanism 24 can be reduced.

In the above-described embodiment, the two-stage type multi-story parking device A in which the pallet elevating bodies 5 and 6 are vertically arranged in two stages is shown. However, as shown in FIG. The present invention can be applied to the case of a three-stage multi-story parking device A having three upper and lower stages with a middle pallet P3 provided therebetween. In this case, the upper pallet P1 is placed on the floor 1 with the pallet lifters 5 and 6 in contact with the ground.
The middle pallet P3 and the lower pallet P2 are positioned in the pit 2 at almost the same level as the above. In FIG. 11, the same components as those of the two-stage multi-story parking device A are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the above embodiment, two pallet elevating bodies 5, 6 are arranged in parallel. However, three or more pallet elevating bodies may be arranged in parallel. 5,
The lifting drive 25 may be installed between the six as described above.

[0035]

As described above, according to the present invention,
A chain drive mechanism is provided before and after as a lifting drive means provided between adjacent pallet lifting bodies, and one chain drive mechanism is provided between two endless chains wound around a pair of upper and lower sprockets constituting each chain drive mechanism. The two pallet hooks are bridged so as to stand out, and when loading and unloading the hooks provided on each of the pallet elevating bodies, the chain drive mechanism drives the lower sprocket to reverse and raise the pallet elevating bodies. The pallet was moved to engage with the hooks of the pallet lift from below. Therefore, one pallet hook can be shared as pallet hooks for the pallet lifting members on both sides, and the number of parts can be reduced by half. In addition, since the pallet hook is always involved in lifting and lowering, the uneconomical situation can be eliminated as compared with the case where there is a pallet hook that is idle. In addition, 2
The endless chain of the strip is inserted vertically through the insertion grooves of a pair of chain insertion portions provided at both ends of the engaging portion of the pallet hook, and is surrounded by the two chain insertion portions,
Since the pallet and the vehicle are equally connected to the two endless chains, the weight of the chain drive mechanism can be reduced because the pallets and the vehicle are equally connected to the two endless chains because the engaging portions and both chain insertion portions are connected in a skewered manner by connecting pins. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a chain hook of a two-stage multilevel parking device.

FIG. 2 is a front view of the two-stage multilevel parking device.

FIG. 3 is a side view of the two-stage multilevel parking device.

FIG. 4 is a plan view of the two-stage multilevel parking device.

FIG. 5 is an enlarged front view showing a chain hooking portion of the balance chain.

6 is a sectional view taken along line VI-VI in FIG.

7 is a sectional view taken along line VII-VII in FIG.

FIG. 8 is a plan view of the hook.

FIG. 9 is a front view of the hook.

FIG. 10 is a side view of the hook.

FIG. 11 is a front view of the three-stage multilevel parking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Floor surface (vehicle entrance surface) 2 Pit 5 Pallet elevating body 6 Pallet elevating body 11 Balance chain (balance means) 21 Upper sprocket 22 Lower sprocket 23 Endless chain 24 Chain drive mechanism 25 Elevation drive (elevation drive) 26 Pallet Hook 27 Hook 28 Engagement part 28a Engagement surface 29 Chain insertion part 29a Insertion groove 30 Connecting pin A Two-stage (three-stage) three-dimensional parking device P1 Upper pallet P2 Lower pallet

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-61-254764 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 6/06

Claims (1)

(57) [Claims] At least two pallet elevating bodies which are vertically arranged in a pit and which have pallets for mounting on a vehicle in upper and lower stages, and each of the pallet elevating bodies is moved up and down while maintaining the horizontal state of each pallet A balance means for guiding, and a lifting drive means provided between adjacent pallet lifting bodies in the pit, for raising and lowering each of the pallet lifting bodies, and driving the respective pallet lifting bodies by driving the lifting drive means. At the time of loading / unloading to / from the upper pallet, the lower pallet is in contact with the bottom of the pit, and each pallet elevating body is lowered so that the upper pallet is positioned at substantially the same level as the vehicle entry surface. The lower pallet is located at almost the same level as the vehicle entry surface, and the upper pallet is located above the vehicle entry surface. A multi-stage three-dimensional parking device configured to raise each pallet elevating body, wherein the elevating drive means includes a chain drive mechanism in which two endless chains are wound around a pair of upper and lower sprockets at the front and rear. For both endless chains of the chain drive mechanism, 1
The two pallet hooks are bridged so as to stand between the two endless chains. On the other hand, the pallet hooks engage with the pallet hooks at two positions before and after the lower pallet lifting / lowering drive side of each of the pallet lifting members. A hook is provided, and the pallet hook engages the hook from below.
An engagement portion having engagement surfaces on both upper and lower surfaces, and both ends of the chain drive mechanism provided at both ends of the engagement portion.
Insert vertically so as to surround the endless chain
A pair of chain inserts having a U-shaped insertion groove to be tightened
Through section, the above-mentioned engaging section, both chain insertion sections, and both endless chains.
Consists of a connecting pin which connects with the over on to skewer, said pallet latching member, at the time goods movements, moves the pallet lift side which attempts to increase by inverting the lower sprocket driven by the chain drive mechanism, A multi-stage multilevel parking device, wherein an engaging surface of the pallet elevating body facing upward from the engaging portion engages with a hook of the pallet elevating body from below.