JPH0748945A - Aligning device for vertical circulation type parking device - Google Patents

Abstract

PURPOSE:To largely shorten a centering time by installing an encoder detecting the number of revolution of a lower sprocket to the lower sprocket and mounting an operating section onto a floor while being faced to a truck. CONSTITUTION:An encoder 15 rotated through gears 14 is set up to the support shaft 8 of a lower sprocket 2 while an operating section 16 is fixed onto a floor on the front side or rear side of the feed direction of a truck 7. The operating section 16 is composed of a control means 17 arithmetically operating the output signal of the encoder 15 and a driving means 18 propelling the truck 7 in response to the arithmetic value. A numeric value counted by the encoder 15 is received in the control means 17 when the through-hole 13 of a pallet 12 installed to a cage 5 does not coincide with the center of the support shaft 8 of the sprocket 2 when one cage 5 is stopped at a lowermost position, and the numeric value and a numeric value at a time when the cage 5 is stopped at an accurate place are compared and arithmetically operated. The driving means 18 is started in response to the numeric value of the difference of both numeric values, the truck 7 is moved and the through-hole 13 of the pallet 12 and the center of the pin 11 of a turntable 6 are conformed, and the pallet 12 and the turntable 6 are engaged by the pin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a cage having a pallet mounted on an endless chain which is vertically moved, and a carriage having a turntable on the floor. The present invention relates to a centering device for aligning the cores when the pins are engaged, among the vertical circulation type parking devices which are engaged with the pins and move up and down the pallet.

[0002]

2. Description of the Related Art A conventional device of this type is shown in FIG.
As shown in the outline thereof, a light reflection type sensor 20 is provided on a carriage 7 having a turntable 6 at a position separated from the turntable, a mirror-like detection plate 21 is provided on the back surface of the pallet 7, and a cage 5 is provided. After moving down to the bottom and stopping, the carriage 7 is moved, the detection plate 21 is detected by the sensor 20, and then the movement is stopped until the core matches with the detection signal.

[0003]

However, in the above-mentioned conventional device, the moving distance of the trolley after sensing is accurately controlled by the relationship between the position of the attached detection plate and sensor and the distance to the core. It is necessary to set, and the moving direction of the bogie for centering is limited to only one direction, and it is necessary to return the bogie to the original position after the vehicle has exited, and its operation It should be done until the next cage reaches the bottom, but there was a problem that it took time to pull out the core because the trolley was moved one by one to move the core out.

The present invention is to solve the above problems. When the center of the cage stopped at the bottom happens to be out of order, the carriage is moved according to the error, and the centering time is set. The purpose is to be able to significantly shorten.

[0005]

According to the present invention, a plurality of cages are hung on an endless chain hung on upper and lower sprockets, a pallet is detachably mounted on the cages, and the pallets are vertically moved below the lower sprockets. And a trolley provided with a rotating turntable, and in a vertical circulation parking device in which the pallet and the turntable are engaged with each other by pins to raise and lower the pallet, an encoder for detecting the number of rotations is provided on the lower sprocket, and Opposed to each other, there is provided an operating unit provided with a control unit that calculates the output signal of the encoder and a drive unit that propels the trolley according to the calculated value.

[0006]

Therefore, the encoder rotates together with the lower sprocket until the cage stops at the bottom, and when the cage stops, its rotation speed is output. Is calculated, and the result is used to correct and drive the carriage by the operation of the driving means.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail. As shown in FIG. 2 which shows an outline of a vertical circulation type parking device provided with an aligning device of the present invention, an endless chain 3 is hung on upper and lower sprockets 1 and 2. , A plurality of arms 4 are projected on the endless chain 3,
A carriage 5 in which a cage 5 is pivotally attached to each arm 4 and a turntable 6 is placed on a floor below the lower sprocket 2 is arranged in a direction orthogonal to a direction of a spindle 8 of the lower sprocket 2, that is, , Is provided so as to be movable along the rail 9 in a direction parallel to the feeding direction of the cage 5. The turntable 6 is moved up and down by a lifter 10 and is rotated by driving a motor. A pin 11 is provided at the center of the turntable 6 so as to project. Meanwhile cage 5
A pallet 12 for directly mounting a vehicle is detachably mounted on the vehicle, and a through hole 1 for engaging the pin 11 at the center thereof.
3 is open.

In the vertical circulation type parking apparatus, as shown in FIG. 1, the gear 1 is attached to the support shaft 8 of the lower sprocket 2.
4 is provided with an encoder 15 that rotates through
The operating portion 16 is fixed to the floor on the front side or the rear side in the feeding direction of the vehicle. The operating portion 16 is composed of a control means 17 and a driving means 18, and the driving means 18 is provided with a screw 19 that is rotated by a motor. Then, the tip end thereof is screwed into the carriage 7 and set. Further, the control means 17 receives the numerical value counted by the encoder 15, compares the numerical value with the numerical value when the cage 5 is stopped at an accurate position, and calculates the difference according to the numerical value (error) of the difference. The drive means 18 is adapted to output a forward or backward drive command. After the error is corrected as described above and the turntable 6 is actuated to descend to the original position, the bogie 7 is pinned by the bobbin 7 by the return completion signal from the lifter 10. It is designed to return to a position that matches the core of the.

Therefore, when one cage 5 stops at the bottom, if the through hole 13 of the pallet 12 provided in the cage 5 is aligned with the core, the operating portion 16 does not move,
Immediately, the turntable 6 rises, the pin 11 is placed in the through hole 13 of the pallet 12, the pallet 12 is further slightly raised, then half-rotated and then lowered to its original state. If the stop position is incorrect, the numerical signal at that time is output from the encoder 15, and the trolley 7 is operated by the control means 17 and the drive means 18 is activated in accordance with the calculated numerical value. By moving by an error (substantially several millimeters) from the normal position, the through hole 13 of the pallet 12 and the core of the pin 11 are aligned.

[0010]

According to the centering device of the vertical circulation type parking device of the present invention, the encoder is provided on the lower sprocket so as to rotate together, and the encoder count is provided on the floor on the front side or the rear side in the moving direction of the carriage. It is equipped with an operating unit consisting of a control unit that calculates numerical values and a drive unit that transfers the dolly by the output of the calculation result, and detects an error by attaching an encoder and an operating unit to a conventional vertical circulation parking device. The correction can be performed quickly without any time for correcting the error, and further, whether the error value is positive or negative can be surely and accurately corrected. become able to.

[Brief description of drawings]

FIG. 1 is a side view showing an alignment device of a vertical circulation parking device according to the present invention.

FIG. 2 is a side view showing an outline of a vertical circulation type parking device provided with an aligning device of the present invention.

FIG. 3 is a side view showing an example of a conventional centering device.

[Explanation of symbols]

 1 Upper sprocket 2 Lower sprocket 3 Endless chain 5 Cage 6 Turntable 7 Bogie 11 Pin 13 Through hole 15 Encoder 16 Actuator 17 Control means 18 Drive means

Claims (1)

[Claims] 1. A plurality of cages (5) are hung on an endless chain (3) hung on upper and lower sprockets (1, 2), and a pallet (12) is detachably mounted on the cage (5) to form a lower sprocket. A trolley (7) having a turntable (6) that moves up and down and rotates is provided on the floor below (2), and the pallet (12) and the turntable (6) are pin-engaged to move the pallet (12) up and down. In the vertical circulation type parking device,
The lower sprocket (2) is provided with an encoder (15) for detecting the number of rotations thereof, and the control means (17) for facing the dolly (7) on the floor and calculating the output signal of the encoder (15).
And an actuating part (16) provided with a drive means (18) for propelling the trolley (7) according to the calculated value thereof.