JPH09132967A - Traverse pallet position control device in hige rise parking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely stop a traverse pallet in a regular stop position. SOLUTION: First and second limit switches 13, 14 operated in a fixed operating range at every regular stop position A of a traverse pallet P are disposed at a space of a fixed reference distance R along the traveling paths 11, 12 of one stage 90. The traverse pallet P has a first projection 15 brought into contact with the first limit switch 13 to be operated, and a second projection 16 brought into contact with the second limit switch 14 to be operated. The first and second projections 15, 16 are separated from each other by a distance B in such a manner that the first and second limit switches 13, 14 are simultaneously put in the operating state. A control part 92 controls the traverse pallet P to be stopped when both the first and second limit switches 13, 14 are turned on.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transverse pallet position control device for a multilevel parking system. More specifically, in one stage of the multilevel parking system, for example, a traversing pallet traversing along a traveling path by driving an electric motor,
The present invention relates to a position control device for stopping at a regular stop position.

[0002]

2. Description of the Related Art Among recent multi-story parking systems, there are an elevating pallet that moves up and down due to expansion and contraction of a hydraulic cylinder, but does not move left and right, and a traversing pallet that moves laterally by an electric motor but does not move vertically. There is a combination of. For example, the three-dimensional parking apparatus 100 shown in FIG.
Is three elevator pallets P1, P2, P3 (each carrying a car, etc.) that can be moved up and down between the middle tier (on the ground floor level) and the upper tier, and the middle tier has two front and rear rails ( (Not shown), two traversing pallets P4 and P5 (each carrying a car) that can traverse left and right, and three hoisting pallets P6 and P7 that can hoist between the middle and lower tiers. P8 (cars are respectively mounted). In the state shown in FIG. 9A, the lifting pallets P1, P2, P3 are all lifted to the upper stage, the horizontal pallet P4 is at the left stop position L, the horizontal pallet P5 is at the central stop position C, and the vertical pallets P6, P6. P7
Is in the lower stage and the ascending / descending pallet P8 is in the middle stage. A front gate G that can move up and down between a middle stage and an upper stage is provided on the front surface of the multi-level parking device 100. In the state of FIG. 3A, the front gate G is in the middle stage in order to prevent a person from entering. For example, when leaving a car from this state, the user presses the "" button and the "deliver" button on the control panel (not shown). Then, a CPU (central processing unit) (not shown) operates and first, as shown in FIG. 7B, the elevating pallet P8 descends from the middle stage to the lower stage. Next, as shown in FIG. 7 (c),
The transverse pallet P5 moves from the central stop position C to the right stop position R
Then, the transverse pallet P4 moves from the left stop position L to the central stop position C in synchronization with each other. Next, as shown in FIG. 7D, the elevating pallet P1 descends from the upper stage to the middle stage.
After that, when the front gate G is raised from the middle stage to the upper stage,
It is possible to leave the car. The loading of the vehicle into the lifting pallet P1 is performed in the reverse order.

Conventionally, in this type of three-dimensional parking apparatus 100,
In order to stop the traversing pallets P4, P5 at the regular stop positions L, C, or R, one limit switch is provided in the area corresponding to each stop position L, C, R behind the rail, and traverse At the rear of the pallets P4 and P5, one detection dog protruding rearward is provided. Then, for example, when the traverse pallets P4, P5 are traversed to the left, the detection dogs of the traverse pallets P4, P5 tilt the levers of the limit switches provided at the stop positions L, C to the left to turn on those limit switches. At this time, it is determined that the horizontal pallets P4, P5 have come to the regular stop positions L, C, and the horizontal pallets P4, P5 are stopped. Similarly, when the traverse pallets P4 and P5 are traversed to the right, the detection dogs of the traverse pallets P4 and P5 tilt the levers of the limit switches provided at the stop positions C and R to the right to turn on those limit switches. At this time, the traverse pallets P4 and P5 are at the regular stop positions C and R.
It is determined that the traverse pallets P4, P5 are stopped.

[0004]

However, when the transverse pallets P4, P5 are stopped by the output of one limit switch as in the above-described multilevel parking apparatus 100, the stop positions L, C, R are provided. When dust or the like is caught between the limit switch and the detection dog, the transverse pallets P4, P5 stop at a position displaced left or right from the normal stop position. For this reason,
In the worst case, the elevator pallet P descending from the upper stage with respect to the vehicle placed on the transverse pallets P4, P5
1, P2, P3 may interfere.

Further, after the transverse pallets P4, P5 are stopped at the regular stop positions, the automobiles are loaded / unloaded from / to the transverse pallets P4, P5.
P5 may shift to the left or right from the normal stop position. In such a case, the above-described control method cannot determine which side the horizontal pallets P4, P5 deviate from the regular stop positions, and therefore the horizontal pallets P4, P5 can be automatically returned to the regular stop positions. There is a problem that you cannot do it.

Therefore, an object of the present invention is to accurately stop the traverse pallet at the proper stop position, and even if the traverse pallet deviates from the proper stop position, the traverse pallet is automatically returned to the original proper position. An object of the present invention is to provide a traverse pallet position control device capable of returning to the stop position.

[0007]

In order to achieve the above object, a traverse pallet position control device according to claim 1 comprises an elevator pallet capable of ascending and descending between one stage and another stage, and one stage. A transverse pallet position control device in a multilevel parking apparatus comprising a transverse pallet capable of traversing along a traveling path at a regular stop position along the traveling path of the one stage, and the traveling is performed at each regular stop position. A first limit switch and a second limit switch that operate in a constant operating range with respect to the direction of the road, the first and second limit switches being spaced apart from each other by a constant reference distance in the direction of the road. The traverse pallet has a first protrusion that comes into contact with the first limit switch to operate the first limit switch, and a second protrusion that comes into contact with the second limit switch. A second protrusion capable of activating a limit switch, wherein the first and second protrusions have a direction of the traveling path such that the first and second limit switches are simultaneously activated. With respect to each other, the transverse pallet is traversed in either direction along the traveling path, and the first and second protrusions are respectively provided with the first and second limit switches. When the first limit switch and the second limit switch come into contact with each other and actuate together, a control unit is provided for controlling to stop the traverse pallet.

In the transverse pallet position control device according to the present invention, the control section includes first and second control units provided on the transverse pallet.
When the protrusions come into contact with the first and second limit switches, respectively, and the first and second limit switches are both actuated, control is performed to stop the traverse pallet. That is, it is determined that the traverse pallet has come to the regular stop position when the two limit switches arranged apart from each other in the direction of the traveling path are both actuated. Therefore, the accuracy of the determination is improved as compared with the case where the determination is made with one limit switch, and the traverse pallet can be accurately stopped at the regular stop position. In such a case, there is no possibility that the elevating pallet descending from the upper stage interferes with the vehicle placed on the transverse pallet.

A traverse pallet position control device according to a second aspect of the present invention is the traverse pallet position control device according to the first aspect, wherein the control section causes the first and second limit switches to operate together. After temporarily stopping the pallet, when either of the first and second limit switches becomes inoperative, place the traverse pallet in the direction in which both the first and second limit switches operate. It is characterized by being traversed.

In the traverse pallet position control device of the present invention, the first and second limit switches are actuated together to temporarily stop the traverse pallet at the regular stop position, and then the first and second limit switches are operated. When any one of the limit switches is deactivated, the control section
Since the traverse pallet is traversed in the direction in which both the first limit switch and the second limit switch are activated, the traverse pallet is automatically returned to the original normal stop position.

A traverse pallet position control device according to a third aspect is the traverse pallet position control device according to the second aspect, wherein the first and second protrusions for operating the first and second limit switches are operated. The width is the same, and the distance between the first protrusion and the second protrusion is set to be larger than the reference distance.

Hereinafter, for convenience of explanation, it is assumed that the first limit switch is arranged on the left side and the second limit switch is arranged on the right side along the traveling path.

In the traverse pallet position control device of the present invention, the widths of the first and second projections for operating the first and second limit switches are the same, and the first projection and the first projection are the same. Since the distance between the second protrusion and the second protrusion is set to be larger than the reference distance, when the transverse pallet is displaced from the regular stop position to the left, the first protrusion causes the first limit switch to move. The first limit switch is deactivated when the first limit switch is deactivated. On the other hand, when the traverse pallet is displaced to the right from the normal stop position, the second protrusion is out of the operating range of the second limit switch, and the second limit switch is inoperative. That is, of the first and second limit switches, the limit switch on the side where the traverse pallet is displaced is deactivated. As a result, the direction of displacement of the transverse pallet is determined. Here, the control unit controls the direction in which both the first and second limit switches operate, that is, from the deactivated limit switch of the first and second limit switches to the other limit switch. The traversing pallet is traversed in the direction to which it faces. As a result, the traverse pallet is automatically returned to the original regular stop position.

A traverse pallet position control device according to a fourth aspect is the traverse pallet position control device according to the second aspect, wherein the first and second projections for operating the first and second limit switches are actuated. The widths are the same, and the distance between the first protrusion and the second protrusion is set to be smaller than the reference distance.

In the traverse pallet position control device of the present invention, the widths of the first and second projections for operating the first and second limit switches are the same, and the first projection and the first projection are the same. Since the distance between the second protrusion and the second protrusion is set to be smaller than the reference distance, when the traverse pallet shifts from the regular stop position to the right side, the first protrusion causes the first limit switch to move. The first limit switch is deactivated when the first limit switch is deactivated. On the other hand, when the traverse pallet is displaced to the left from the regular stop position, the second protrusion is out of the operating range of the second limit switch and the second limit switch is inoperative. That is, of the first and second limit switches, the limit switch on the side opposite to the direction in which the transverse pallet is displaced is deactivated. As a result, the direction of displacement of the transverse pallet is determined. Here, the control unit controls the direction in which both of the first and second limit switches operate, that is, the limit in which one of the first and second limit switches that is operating is inactive. Traverse the traverse pallet in the direction toward the switch.
As a result, the traverse pallet is automatically returned to the original regular stop position.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the traverse pallet position control device of the present invention will be described in detail below. The multi-level parking device to which the present invention is applied has a lift pallet capable of moving up and down between one step and another step and one step on the first floor level, similar to the one shown in FIG. And a traversing pallet that can traverse along the rails.

FIG. 1 shows the vicinity of a regular stop position A at which the transverse pallet P should stop, as seen from above, on the first-floor level step 90 of the multilevel parking apparatus. Although illustration is omitted for simplification, a plurality of such traverse pallets P and regular stop positions A are provided in this stage 90.

A front rail 11 and a rear rail 12 extending parallel to the left and right are laid on the floor surface of the step 90 as a traveling path. Behind the rear rail 12, a first limit switch 13 and a second limit switch 14 are arranged in the left-right direction so as to be spaced apart from each other at each regular stop position A of the traverse pallet P. The left and right distances of the first and second limit switches 13 and 14 (lever 1
The distance between the fulcrums 3a and 14a) is set to a constant reference distance R. First and second limit switch 1
3 and 14 are off (inoperative) when the levers 13a and 14a are in a neutral state perpendicular to the rear rail 12,
The levers 13a and 14a are turned on (operated) even if the levers 13a and 14a fall along the rail to either the left side or the right side. The levers 13a and 14a are of a rebound type and fall to the left side or the right side only when the detection dogs 15 and 16 to be described later are in contact, and the detection dogs 15 and 1
As soon as 6 leaves, it returns to the neutral state.

The traversing pallet P includes a rectangular pallet body 1 on which an automobile is mounted, an electric motor (hereinafter referred to as "traversing motor") 2 mounted on the pallet body 1,
A pair of axles 7 and 8 rotatably attached to the pallet body 1 along bearings (not shown) along the left side 1a and the right side 1b, and attached to both ends of these axles 7 and 8, respectively. Wheels 3, 4; 5, 6 are provided. The rotation of the output shaft 2a of the traverse motor 2 is transmitted to the left axle 7 via the belt 9. The left axle 7 and the right axle 8 are connected by a chain 10 so that they rotate in the same direction. Each of the wheels 3, 4, 5, 6 rolls on the rails 3a, 4a, 5a, 6a, and flange portions 3b, 4b that contact the side surfaces of the rails and restrict the movement of the pallet body 1 in the front-rear direction. , 5b, 6b.

On the rear side 1d of the traversing pallet P, a substantially rectangular parallelepiped detection dog 15 as a first projection and a substantially rectangular parallelepiped detection dog 16 as a second projection are projected rearward and left and right. Are spaced apart from each other in the direction. The detection dogs 15 and 16 have the same width in the left-right direction,
Moreover, they are arranged symmetrically with respect to the transverse pallet P in the left-right direction. The left side surface 15a of the detection dog 15 on the left side, the rear surface 1
5b and the right side surface 15c may contact the lever 13a of the first limit switch 13, the left side surface 16a of the right detection dog 16, the rear surface 16b and the right side surface 16c are the lever 14a of the second limit switch 14. Is a surface that can come into contact with. In this embodiment, the distances between the detection dogs 15 and 16 in the left-right direction (center-to-center distance)
In B, the detection dogs 15 and 16 are in contact with the levers 13a and 14a of the first and second limit switches 13 and 14 so that the first and second limit switches 13 and 14 are simultaneously turned on. Is set to be larger than the reference distance R within the range in which can be created.

A CPU (central processing unit) 92 as a control unit is provided on a control panel 91 of this multilevel parking system. The CPU 92 drives the traverse motor 2 based on the user's operation to traverse the traverse pallet P leftward (hereinafter referred to as "leftward") or rightward (hereinafter referred to as "rightward"). Then, the detection dog 15,
16 is the first and second limit switches 1 respectively
The first and second levers 13a and 14a of the third and 14
When both the second limit switches 13 and 14 are turned on, control is performed to stop the traverse pallet P.

Specifically, although not shown, the user, on the control panel 91, presses the number button of the car that the user wants to leave and the "delivery".
When the button is pressed, as shown in FIG. 2, the CPU 92 determines whether or not each horizontal pallet P should be moved to the left (S1). When it is determined that the horizontal pallet P should be moved to the left, the CPU 92 drives the horizontal motor 2 to move the horizontal pallet P to the left (S2). In the case of left row, the first limit switch 13 is used for left row confirmation, and the second limit switch 14 is used for left row stop (“left row confirmation LS” and “left row stop LS, respectively). "."). That is, as shown in FIG. 3A, when the traverse motor 2 starts (turns on) the left traverse of the traverse pallet P for a while, the distance B between the detection dogs 15 and 16 becomes larger than the reference distance R. Since it is set, the left-row confirmation LS (first limit switch 13) is turned on first as shown in FIG. 3 (c), and then FIG. 3 (b).
Left stop LS (second limit switch 1
4) turns on. Therefore, as shown in FIG. 2, the CPU 92 determines whether or not the left-row confirmation LS is turned on (S3) and whether or not the left-row stop LS is turned on (S4) to move the transverse pallet P to the left. (S2). When both the left-row confirmation LS and the left-row stop LS are turned on, the traverse motor 2 is stopped to stop the left traverse of the traverse pallet P (S
5).

On the other hand, when it is determined that the transverse pallet P should be moved to the right (S1), the CPU 92 drives the transverse motor 2 to move the transverse pallet P to the right (S6). In the case of the rightward direction, the second limit switch 14 is checked for the rightward direction so that the first limit switch 1
3 are used respectively for rightward stop (referred to as "rightward confirmation LS" and "rightward stop LS", respectively). That is, as shown in FIG. 3A, when the traverse motor 2 starts (turns on) rightward traverse of the traverse pallet P for a while, the distance B between the detection dogs 15 and 16 becomes larger than the reference distance R. Since the setting is made, first, the rightward confirmation LS (second limit switch 14) is turned on as shown in FIG. 3 (e), and then the rightward stop LS (second limit switch LS as shown in FIG. 3D). Limit switch 13) of 1 turns on. Therefore, CPU9
2, the right pallet P is moved to the right (S6) while determining whether the right-row confirmation LS is turned on (S7) and whether the right-row stop LS is turned on (S8). When both the right-row confirmation LS and the right-row stop LS are turned on, the traverse motor 2 is stopped to stop the right traverse of the traverse pallet P (S
5).

As described above, in this traverse pallet position control device, when the two limit switches 13 and 14 arranged in the left-right direction are both turned on, the CPU 92
Since it is determined that the traverse pallet P has come to the regular stop position A, the precision of the determination can be improved compared to the case where the determination is made with one limit switch, and the traverse pallet P can be accurately regulated. Can be stopped at the stop position A.

After the first and second limit switches 13 and 14 are both turned on to temporarily stop the traverse pallet P at the regular stop position A, the traverse pallet P is loaded and unloaded (pallets). As a result of performing the front side 1c of the main body 1 and the front rail 11, the traverse pallet P receives a force from the wheels of the automobile and moves from the regular stop position A along the rails 11 and 12. It may shift to the left or right.

Immediately after the traverse pallet P is moved to the left and stopped at the regular stop position A, as shown in FIG.
Limit switch 13 has lever 13a for detection dog 1
5 comes into contact with the rear surface 15b of the No. 5 and is turned on, and the lever 14a of the second limit switch 14 is left side surface 16 of the dog 16 for detection.
It is in a state of being in contact with a and being turned on. Here, when the traverse pallet P deviates to the left from the regular stop position A, the distance B between the detection dogs 15 and 16 is the first,
Since it is set to be larger than the reference distance R between the second limit switches 13 and 14 (see FIG. 1), FIG.
As shown in (d), the first limit switch 13 (leftward confirmation LS) is turned off by the lever 13a being separated from the detection dog 15, and the second limit switch 14 (leftward stop L
In S), the lever 14a comes into contact with the rear surface 16b of the detection dog 16 and is turned on. On the other hand, the traverse pallet P
Is shifted to the right from the normal stop position A,
As shown in FIG. 5, the lever 13a of the first limit switch 13 (left-hand confirmation stop LS) has the rear surface 15b of the dog 15 for detection.
Through contact with the left side surface 15a and turning on, the second limit switch 14 (leftward stop LS) is in a state where the lever 14a is separated from the detection dog 16 and turned off. That is, when the traverse pallet P is displaced from the regular stop position A to the left, the first limit switch 13 on the left side is turned off, while when the traverse pallet P is displaced from the regular stop position A to the right, it is on the right side. The second limit switch 14 is turned off.

Immediately after the traverse pallet P is moved to the right and stopped at the regular stop position A, the lever 13a of the first limit switch 13 is set to the detection dog 15 as shown in FIG. 5 (b). The second limit switch 14 is in the state of being turned on by making contact with the right side surface 15c, and the lever 14a of the second limit switch 14 being made in contact with the rear surface 16b of the detection dog 16. Here, when the traverse pallet P is displaced to the left from the regular stop position A, the distance B between the detection dogs 15 and 16 is the reference distance R between the first and second limit switches 13 and 14. Since it is set to be larger than that of the first limit switch 1 (see FIG. 1), as shown in FIG.
3 (rightward stop LS), the lever 13a is separated from the detection dog 15 and turned off, and in the second limit switch 14 (rightward confirmation LS), the lever 14a moves the rear surface 16 of the detection dog 16.
The state of being in contact with the right side surface 16c through b and being turned on. On the other hand, when the traverse pallet P is displaced to the right from the regular stop position A, the lever 13a of the first limit switch 13 (right traverse stop LS) is moved to the detection dog 15 as shown in FIG. 5 (f). The second limit switch 14 (rightward confirmation LS) is brought into contact with the rear surface 15b and turned on, and the lever 14a is separated from the detection dog 16 and turned off. That is,
When the transverse pallet P is displaced from the regular stop position A to the left side, the first limit switch 13 on the left side is turned off, while when the transverse pallet P is displaced from the regular stop position A to the right side, the right side first limit switch 13 is turned off. The limit switch 14 of No. 2 is turned off.

As described above, in either case, after the traverse pallet P is moved to the left and stopped at the regular stop position A, the traverse pallet P is moved to the right and stopped at the regular stop position A. However, the traverse pallet P is at the regular stop position A.
When the horizontal pallet P is displaced from the regular stop position A to the right, the second limit switch 14 on the right side is turned off. That is, of the first and second limit switches 13 and 14, the limit switch on the side where the transverse pallet P is displaced is turned off. This makes it possible to determine the deviation direction of the transverse pallet P. Therefore, the traverse pallet P is returned to the original regular stop position A by traversing the traverse pallet P in the direction opposite to the shift direction so that both the first and second limit switches 13 and 14 are turned on. Can be made.

Specifically, as shown in FIG. 4, the CPU 9
First, 2 determines whether or not each horizontal pallet P is a horizontal pallet P that is moved to the left and stopped (S11). When it is determined that the traverse pallet P is moved to the left and stopped, the left pallet stop LS (second
It is determined whether the limit switch 14) is off (S12). When the left stop LS is off,
Since the transverse pallet P is displaced to the right from the regular stop position A, the transverse pallet P is moved to the left (S13). Then, when the leftward stop LS is turned on, it is determined that the transverse pallet P has returned to the regular stop position A (S14), and the leftward movement of the transverse pallet P is stopped (S1).
5). As a result, the transverse pallet P displaced to the right can be returned to the original regular stop position A. On the other hand, when the left-row stop LS is on (S12), it is determined whether or not the left-row confirmation LS (first limit switch 13) is off (S16). When the leftward confirmation LS is off, the transverse pallet P is displaced to the left from the regular stop position A, so the transverse pallet P is moved to the right (S17). When the leftward confirmation LS is turned on, it is determined that the transverse pallet P has returned to the regular stop position A (S18), and the rightward movement of the transverse pallet P is stopped (S19). As a result, the transverse pallet P displaced to the left can be returned to the original regular stop position A.
When both the left-row stop LS and the left-row confirmation LS are turned on (S12, S16), the horizontal pallet P is at the regular stop position A. Therefore, the horizontal pallet P cannot be moved. Absent.

When it is determined that the traverse pallet P has been moved rightward and stopped (S11), it is further determined whether the rightward stop LS (first limit switch 13) is off. Yes (S20). When the rightward stop LS is off, the horizontal pallet P is displaced to the left from the regular stop position A, so the horizontal pallet P is moved rightward (S21). Then, when the rightward stop LS is turned on, it is judged that the transverse pallet P has returned to the regular stop position A (S22), and the rightward movement of the transverse pallet P is stopped (S23). As a result, the transverse pallet P displaced to the left can be returned to the original regular stop position A. On the other hand, when the rightward stop LS is on (S2
0) is the rightward confirmation LS (second limit switch 14)
It is determined whether or not is off (S24). When the rightward confirmation LS is off, the transverse pallet P is displaced to the right from the regular stop position A, so the transverse pallet P is moved to the left (S25). Then, when the rightward confirmation LS is turned on, it is judged that the transverse pallet P has returned to the regular stop position A (S26), and the transverse pallet P is determined.
The left row of is stopped (S27). As a result, the transverse pallet P displaced to the right can be returned to the original regular stop position A. When both the rightward stop LS and the rightward confirmation LS are turned on (S20, S24), the traverse pallet P is at the regular stop position A.
The traverse pallet P is never moved.

As described above, in this traverse pallet position control device, the CPU 92 temporarily stops the traverse pallet P and then the first and second limit switches 13 and 1 described above.
When any one of 4 is turned off, the traverse pallet P is traversed in the direction from the turned off limit switch to the other limit switch, so that the traverse pallet P is automatically returned to the original regular stop position A. Can be made.

FIG. 6 shows another embodiment of the traverse pallet position control device of the present invention.

In this embodiment, the detection dogs 15 and 1 are
6 is the distance B in the left-right direction (center-to-center distance)
5 and 16 are the first and second limit switches 13 and 1
The reference distance R is set smaller than the reference distance R within a range in which the first and second limit switches 13 and 14 can be simultaneously turned on by contacting the four levers 13a and 14a.

In this case, immediately after the traverse pallet P is moved to the left and stopped at the regular stop position A, as shown in FIG. 6 (a), the lever 13a of the first limit switch 13 has the dog 15 for detection. The left limit surface 15a of the second limit switch 14 is turned on, and the second limit switch 14 is operated by the lever 14a.
The rear surface 16b is in contact with the rear surface 16b and is turned on. Here, when the transverse pallet P shifts to the right from the regular stop position A as a result of the loading and unloading of the vehicle for the transverse pallet P, the distance B between the detection dogs 15 and 16 is determined.
Is set to be smaller than the reference distance R between the first and second limit switches 13 and 14,
As shown in (b), the lever 13a of the first limit switch 13 is separated from the detection dog 15 and turned off, and the second limit switch 14 of the lever 14a is detected by the detection dog 16.
The rear surface 16b to the left side surface 16a are brought into contact with each other to be turned on. On the other hand, the traverse pallet P is at the regular stop position A.
When it shifts to the left side from the first position, as shown in FIG.
Limit switch 13 has lever 13a for detection dog 1
5 comes into contact with the rear surface 15b and is turned on, and the second limit switch 14 is in a state where the lever 14a is separated from the dog 16 for detection and turned off. That is, when the traverse pallet P is displaced from the regular stop position A to the right, the left first limit switch 13 is turned off, while when the traverse pallet P is displaced from the regular stop position A to the left, the right side limit switch 13 is turned off. The second limit switch 14 is turned off.

Similarly, after the transverse pallet P has been moved to the right and stopped at the regular stop position A, the vehicle is similarly loaded and unloaded from the transverse pallet P, and as a result, the transverse pallet P is moved from the regular stop position A. When it shifts to the right, the first on the left
While the limit switch 13 is turned off, the second pallet P on the right side is turned off when the transverse pallet P is displaced from the regular stop position A to the left side.

In this way, the limit switch of the first and second limit switches 13 and 14 on the side opposite to the direction in which the transverse pallet P is displaced is turned off. This makes it possible to determine the deviation direction of the transverse pallet P. Therefore, the first and second limit switches 13,
By traversing the traverse pallet P in a direction opposite to the shift direction so that both 14 turn on, the traverse pallet P can be returned to the original regular stop position A.

In the above-described embodiment, the first and second limit switches 13 and 14 are off when the levers 13a and 14a are inoperative, that is, the levers 13a and 14a are on the left or It is supposed to be turned on when the vehicle is leaning to the right, but of course it is not limited to this. The first and second limit switches 13, 14 are inoperative, that is, the levers 13a, 14
When a is in the neutral state, it is turned on and actuated, that is, lever 1
It may be turned off when 3a and 14a are tilted to the left or right. In this case, the CPU 92 may switch the ON and OFF states and perform the processing. In short, CP
It suffices for U92 to be able to distinguish between the non-operating state and the operating state of the first and second limit switches.

[0038]

As is apparent from the above, in the transverse pallet position control device according to the first aspect, the control section has the first and second limit switches provided on the transverse pallet for the first and second limit switches, respectively. When the first limit switch and the second limit switch are both actuated upon contact with, the control is performed to stop the traverse pallet. That is, it is determined that the traverse pallet has come to the regular stop position when the two limit switches arranged apart from each other in the direction of the traveling path are both actuated. Therefore, the accuracy of the judgment can be improved as compared with the case where the judgment is made by using one limit switch, and the traverse pallet can be accurately stopped at the regular stop position.

In the traverse pallet position control device according to the second aspect, after the first and second limit switches are actuated together and the traverse pallet is once stopped at the regular stop position,
When one of the first and second limit switches becomes inoperative, the control section causes the traverse pallet to traverse in a direction in which both the first and second limit switches operate. , The traverse pallet can be automatically returned to the original regular stop position.

In the traverse pallet position control device of the third aspect, the widths of the first and second protrusions for operating the first and second limit switches are the same, and the first and second protrusions are the same.
Since the distance between the protrusion and the second protrusion is set to be larger than the reference distance, the limit switch of the first and second limit switches on the side where the traverse pallet is displaced does not operate. Becomes Therefore, the control unit
Traverse the traverse pallet in a direction in which both the first and second limit switches operate, that is, in a direction from the inactivated limit switch of the first and second limit switches toward the other limit switch. By doing so, the transverse pallet can be automatically returned to the original regular stop position.

In the traverse pallet position control device of the fourth aspect, the widths of the first and second protrusions for operating the first and second limit switches are the same, and the first and second protrusions are the same.
Since the distance between the protrusion and the second protrusion is set to be smaller than the reference distance, the limit switch on the opposite side of the direction in which the traverse pallet is deviated from the first and second limit switches. Becomes inactive. Therefore,
A direction in which the control unit operates both of the first and second limit switches, that is, a direction from the operating limit switch of the first and second limit switches to the deactivated limit switch. By traversing the traversing pallet at 1, the traverse pallet can be automatically returned to the original regular stop position.

[Brief description of the drawings]

FIG. 1 is a view showing a vicinity of a regular stop position where a traversing pallet should stop, as seen from above, of a multi-level parking device to which a traversing pallet position control device of the present invention is applied.

FIG. 2 is a diagram showing a control flow for stopping the transverse pallet at a regular stop position.

FIG. 3 is a diagram showing a timing for stopping the transverse pallet at a regular stop position.

FIG. 4 is a diagram showing a control flow for returning the traverse pallet to a regular stop position.

5 is a first and second embodiment shown in FIG.
It is a figure which shows the positional relationship of the limit switch of FIG.

FIG. 6 is a diagram showing a positional relationship between first and second limit switches and a dog for detection according to another embodiment of the present invention.

FIG. 7 is a diagram illustrating a general operation of a multi-level parking device.

[Explanation of symbols]

1 Pallet Main Body 2 Traverse Motor 11 Front Rail 12 Rear Rail 13 First Limit Switch 14 Second Limit Switch 15, 16 Detection Dog 92 CPU

Claims (4)

[Claims] 1. An elevating pallet capable of ascending / descending between one stage and another stage, and a traveling path (11, 1) with one stage (90).
2) A traverse pallet position control device in a multilevel parking system comprising a traverse pallet (P) capable of traversing along a vehicle, wherein a regular stop position () is provided along the traveling path of the one stage (90). For each A), the above-mentioned running paths (11, 12)
The first and second limit switches (13, 14) that operate in a constant operating range with respect to the direction, and the first and second limit switches (13, 14)
Are spaced apart from each other by a certain reference distance (R) with respect to the direction of the traveling path (11, 12), and the traverse pallet (P) is brought into contact with the first limit switch (13). First limit switch (1
3) a first protrusion (15) capable of actuating the second limit switch (14) and a second protrusion (16) capable of actuating the second limit switch (14).
And the first and second protrusions (15, 16) have the first
And the second limit switches (13, 14) are simultaneously operated so that the traveling path (11, 1)
2) are provided apart from each other by a certain distance (B), and the traversing pallet (P) is traversed in any direction along the traveling path (11, 12) to provide the first, When the second projections (15, 16) come into contact with the first and second limit switches (13, 14) respectively and the first and second limit switches (13, 14) operate together,
A traverse pallet position control device comprising a control unit (92) for controlling to stop the traverse pallet (P). 2. The traverse pallet position control device according to claim 1, wherein the control unit (92) operates the traverse pallet (P) when the first and second limit switches (13, 14) are actuated together. ) Is temporarily stopped and then either of the first and second limit switches (13, 14) becomes inoperative, a direction in which both the first and second limit switches operate. A transverse pallet position control device characterized in that the transverse pallet (P) is traversed. 3. The transverse pallet position control device according to claim 2, wherein the width of the first and second protrusions (15, 16) for operating the first and second limit switches (13, 14). Are the same, and the distance (B) between the first protrusion (15) and the second protrusion (16) is the reference distance (R).
A transverse pallet position control device characterized by being set larger than. 4. The transverse pallet position control device according to claim 2, wherein the width of the first and second protrusions (15, 16) for operating the first and second limit switches (13, 14). Are the same, and the distance (B) between the first protrusion (15) and the second protrusion (16) is the reference distance (R).
A transverse pallet position control device characterized by being set smaller than the above.