[go: up one dir, main page]

HK1100688A1 - Parking apparatus and control method for the same - Google Patents

Parking apparatus and control method for the same Download PDF

Info

Publication number
HK1100688A1
HK1100688A1 HK07108469.8A HK07108469A HK1100688A1 HK 1100688 A1 HK1100688 A1 HK 1100688A1 HK 07108469 A HK07108469 A HK 07108469A HK 1100688 A1 HK1100688 A1 HK 1100688A1
Authority
HK
Hong Kong
Prior art keywords
lift
pallet
cart
transfer
signal
Prior art date
Application number
HK07108469.8A
Other languages
Chinese (zh)
Other versions
HK1100688B (en
Inventor
Seong Joon Kim
Original Assignee
Autech-Otis Parking Systems
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autech-Otis Parking Systems filed Critical Autech-Otis Parking Systems
Publication of HK1100688A1 publication Critical patent/HK1100688A1/en
Publication of HK1100688B publication Critical patent/HK1100688B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades
    • B60S1/3806—Means, or measures taken, for influencing the aerodynamic quality of the wiper blades
    • B60S1/381—Spoilers mounted on the squeegee or on the vertebra
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
    • E04H6/08—Garages for many vehicles
    • E04H6/12—Garages for many vehicles with mechanical means for shifting or lifting vehicles
    • E04H6/18—Garages for many vehicles with mechanical means for shifting or lifting vehicles with means for transport in vertical direction only or independently in vertical and horizontal directions
    • E04H6/24—Garages for many vehicles with mechanical means for shifting or lifting vehicles with means for transport in vertical direction only or independently in vertical and horizontal directions characterised by use of dollies for horizontal transport, i.e. cars being permanently parked on wheeled platforms
    • E04H6/245—Garages for many vehicles with mechanical means for shifting or lifting vehicles with means for transport in vertical direction only or independently in vertical and horizontal directions characterised by use of dollies for horizontal transport, i.e. cars being permanently parked on wheeled platforms without transverse movement of the wheeled parking platform after leaving the transfer means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/38—Wiper blades
    • B60S1/3848—Flat-type wiper blade, i.e. without harness
    • B60S1/3874—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra
    • B60S1/3875—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section
    • B60S1/3881—Flat-type wiper blade, i.e. without harness with a reinforcing vertebra rectangular section in additional element, e.g. spoiler

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Quality & Reliability (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)

Abstract

The present invention provides a parking apparatus comprising a pallet on which a vehicle rests, a lift moving in a vertical direction with the pallet on top thereof, a lift driving unit for raising and lowering the lift, a cart moving in a horizontal direction with the pallet on top thereof, a transfer unit for transferring the pallet between the lift and the cart, a lift level detector for detecting an arrival of the lift in a transfer level in which the pallet can be transferred between the lift and the cart, a first transfer completion detector for detecting a completion of transfer of the pallet to the cart form the lift, a second transfer completion detector for detecting a completion of transfer of the pallet to the lift from the cart, and a controller sending the lift driving unit a signal for raising the lift in case that the completion of transfer of the pallet to the cart form the lift is not detected by the first transfer completion detector in a given time interval after the controller sends the transfer unit a signal for triggering the transfer of the pallet to the cart form the lift, and the controller sending the lift driving unit a signal for lowering the lift in case that the completion of a transfer of the pallet from the cart to the lift is not detected by the second transfer completion detector in a given time interval after the controller sends the transfer unit a signal for triggering the transfer of the pallet from the cart to the lift.

Description

Parking apparatus and control method thereof
Technical Field
The present invention relates, in general, to a parking apparatus and a pallet control method and, more particularly, to a parking apparatus capable of automatically solving a problem of transfer failure of a pallet between a lift and a cart due to a difference in height between the lift and the cart, and a method of controlling transfer of a pallet in a parking apparatus.
Background
A parking apparatus using an elevator for a vehicle includes an elevator for raising or lowering a pallet on which the vehicle is loaded. The parking apparatus further includes a cart for horizontally moving the pallet transferred from the lift toward the parking space.
In fig. 1, a parking apparatus of the prior art is shown.
The parking apparatus includes a lift 1, a pallet 3 mounted on the lift 1, and a cart 2 positioned at a parking area near a shaft passage for the lift 1.
The elevator 1 is equipped with a plurality of sensors. A front stop lift sensor 4, a front deceleration lift sensor 5, a rear deceleration lift sensor 6, and a rear stop lift sensor 7 are provided for controlling the position of pallet 3 on lift 1. Furthermore, an upper level sensor 9 and a lower level sensor 10 are also provided on the lift 1 to control the position of the lift 1. Cart 2 is also equipped with a plurality of sensors for controlling the position of pallet 3 on cart 2 (i.e., front stop cart sensor 14, front deceleration cart sensor 15, rear deceleration cart sensor 16, and rear stop cart sensor 17).
In the related art parking apparatus constructed in the above-described manner, the transfer of pallet 3 from lift 1 to cart 2 is performed in the following manner.
When a control signal for transferring pallet 3 from lift 1 to cart 2 is issued, pallet 3 is first transferred at high speed by rotation of a drive unit provided on lift 1, which is also provided on cart 2. When the front deceleration cart sensor 15 detects a pallet 3 moving at a high speed, the controller (not shown) sends a signal to the driving unit to reduce its rotation speed, which causes the pallet 3 to start moving at a low speed. When front stop cart-sensor 14 detects pallet 3, it sends a signal, and upon receiving the signal from front stop cart-sensor 14, the controller stops the driving unit.
However, as shown in fig. 2, the prior art has a disadvantage in that if lift 1 stays at a lower height than cart 2, the entire transfer of pallet 3 to cart 2 often fails. This is because rear wheels 3b of pallet 3 moving at a reduced speed cannot climb up to the steps of cart 2, where cart 2 is at a higher elevation than lift 1. In this case, if the controller does not receive a signal from front-stop cart-sensor 14, which front-stop cart-sensor 14 sends a signal when it detects pallet 3, the controller determines that a problem occurs in the parking apparatus for a prescribed period of time, and thus, it stops the entire operation of the parking apparatus, so that the above problem must be manually solved by the operator.
Further, when transferring pallet 3 to lift 1, if lift 1 is at a higher height than cart 2, the entire transfer of pallet 3 to lift 1 often fails because pallet 3 is caught by the step. In this regard, the controller determines that there is a problem with the parking apparatus and stops the entire apparatus, so that the problem must also be manually solved.
As described above, in the related art parking apparatus, turning off the parking apparatus is only an emergency measure when the pallet transfer fails due to the height difference between the lift and the cart, wherein such failure must be manually solved by the operator.
Therefore, a plurality of operators are required to manually handle the problem. Furthermore, since the device is not functioning during the process, the user must spend an increased amount of time.
Disclosure of Invention
An object of the present invention is to provide a parking apparatus capable of automatically solving the problem of transfer failure of a pallet due to a height difference between a lift and a cart. In addition, it is a further object of the present invention to provide a method for controlling transfer of pallets.
This and other objects of the present invention can be accomplished by the provision of a parking apparatus comprising: a pallet on which a vehicle is placed; a lift moving in a vertical direction with the pallet set thereon; a lift driving unit for raising and lowering the lift; a cart moving in a horizontal direction with the pallet set thereon; a transfer unit for transferring the pallet between the lift and the cart; a lift height detecting device for detecting that the lift reaches a transfer height at which the pallet can be transferred between the lift and the cart; first transfer completion detecting means for detecting completion of transfer of the pallet from the lift to the cart; a second transfer completion detecting device for detecting completion of transfer of the pallet from the delivery truck to the lift; and a controller for sending a signal to the lift driving unit to raise the lift in a case where the first transfer completion detecting means does not detect completion of transfer of the pallet from the lift to the cart within a prescribed time interval after it sends a signal to the transfer unit to trigger the transfer of the pallet from the lift to the cart, the controller being further adapted to send a signal to the lift driving unit to lower the lift in a case where the second transfer completion detecting means does not detect completion of transfer of the pallet from the cart to the lift within a prescribed time interval after the controller sends a signal to the transfer unit to trigger the transfer of the pallet from the cart to the lift.
According to an aspect of the present invention, the lift height detecting device includes an upper sensor and a lower sensor, the upper sensor being mounted on a portion of the lift facing the cart and generating a first signal when the cart is present in front of the upper sensor and generating a second signal otherwise; the lower sensor is mounted on a portion of the lift facing the cart and is vertically spaced from the upper sensor, the lower sensor generating a first signal when the cart is present in front of the lower sensor and otherwise generating a second signal, wherein the upper sensor and the lower sensor generate the first signal when the lift is at the transfer level.
According to another aspect of the present invention, in the case of transmitting the signal for raising the lift, the controller further transmits a signal for stopping the raising of the lift upon receiving the second signal from the upper sensor, and in the case of transmitting the signal for lowering the lift, the controller further transmits a signal for stopping the lowering of the lift upon receiving the second signal from the lower sensor.
According to another aspect of the present invention, the first transfer completion detecting means includes a stop cart-sensor that generates a first signal when the pallet is present in front of the stop cart-sensor and generates a second signal otherwise, the stop cart-sensor being mounted on the cart so that it generates the first signal when the transfer of the pallet to the cart is completed.
According to another aspect of the present invention, the first transfer completion detecting means further includes a deceleration cart-sensor generating a first signal when the pallet is present in front of the deceleration cart-sensor and generating a second signal otherwise, the deceleration cart-sensor being mounted on the cart so as to inform the controller of a point in time when the pallet should be decelerated to a low speed before the transfer of the pallet to the cart is completed.
According to another aspect of the present invention, the controller checks the lapse of the prescribed time interval by starting the counting of the lapse time at the time when the deceleration cart-sensor generates the first signal.
According to another aspect of the present invention, the second transfer completion detecting means includes a stop lift sensor for generating a first signal when the pallet is present in front of the stop lift sensor and otherwise generating a second signal, the stop lift sensor being installed on the lift so that it generates the first signal when the transfer of the pallet to the lift is completed.
According to another aspect of the present invention, the second transfer completion detecting means further includes a deceleration lift sensor for generating a first signal when the pallet is present in front of the deceleration lift sensor and otherwise generating a second signal, the deceleration lift sensor being installed on the lift so as to inform the controller of a point in time when the pallet should be decelerated to a low speed before the transfer of the pallet to the lift is completed.
According to another aspect of the present invention, the controller checks the lapse of the prescribed time interval by starting the counting of the lapse time at the time when the deceleration lift sensor generates the first signal.
According to another aspect of the invention, the sensor is a photoelectric sensor of the direct reflection type.
According to another aspect of the present invention, there is provided a method of controlling transfer of a pallet in a parking apparatus including a pallet on which a vehicle is placed, a lift moving in a vertical direction with the pallet placed thereon, and a cart moving in a horizontal direction with the pallet placed thereon, the method including the steps of: a) enabling the lift to reach a transfer height at which the pallet can be transferred between the lift and the cart by raising or lowering the lift; b) raising the lift in a case where the transfer of the pallet from the lift to the cart is not completed within a prescribed time interval after the transfer of the pallet from the lift to the cart is triggered; and c) lowering the lift after the transfer of the pallet from the dispensing car to the lift is triggered, in the event that the transfer of the pallet from the dispensing car to the lift is not completed within a prescribed time interval.
Drawings
FIG. 1 is a top plan view of a lift, cart and platform of a prior art parking apparatus;
fig. 2 is a side view illustrating a transfer failure of a pallet due to a height difference between a lift and a cart of a related art parking apparatus;
FIG. 3 is a front elevational view of an elevator and a platform of a parking apparatus constructed in accordance with the present invention;
FIG. 4 is a side view of the elevator and pallet shown in FIG. 3;
fig. 5 and 6 are side views illustrating the transfer of the pallet from the lift to the cart in the parking apparatus of the present invention; and
fig. 7 and 8 are side views illustrating the transfer of the pallet from the dispensing cart to the lift in the parking apparatus of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 3 and 4 are front and side views, respectively, of lift 1, cart 2 and platform 3 of a parking apparatus constructed in accordance with the present invention.
The elevator 1 is a member adapted to vertically run through a hoistway lane (not shown) to raise and lower a pallet 3 on which a vehicle can be loaded. For vertical operation of the elevator 1, an elevator driving unit (not shown) is installed near the shaft passage to raise and lower the elevator 1.
The pallet 3 includes wheels 3a, 3b, i.e., a pair of front wheels 3a mounted on the lower surface of the front end and a pair of rear wheels 3b mounted on the lower surface of the rear end, and a driven bar 3c formed on the lower surface along the center line, the driven bar 3c being an element capable of enabling the transfer of the pallet 3 by being disposed between transfer rollers 1c, 2c, the transfer rollers 1c, 2c being mounted on the lift 1 and the cart 2, respectively.
Lift 1 comprises on its upper surface a pair of transfer rails 1a adapted to engage with wheels 3a, 3b of pallet 3, a transfer unit, sensors 6, 7 for detecting the position of pallet 3 and sensors 9, 10, sensors 9, 10 being mounted on the side of lift 1 facing cart 2 to detect the height of lift 1.
The transfer unit is provided with a pair of transfer rollers 1c that sandwich the driven rod 3c therebetween, a base 1b that supports the pair of transfer rollers 1c, and a drive motor (not shown) for rotating the pair of transfer rollers 1 c.
Deceleration lift sensor 6 serves to inform a controller (not shown) of a point in time at which the speed of pallet 3, which is initially moving at a high speed, must be changed to a low speed during transfer of pallet 3, in other words, when deceleration lift sensor 6 detects pallet 3, the controller adjusts the rotational speed of the driving motor so that pallet 3 is transferred at a low speed. Stop lift sensor 7 serves to notify the controller that pallet 3 has completely arrived on lift 1 during transfer of pallet 3 from cart 2 to lift 1.
Cart 2 includes a pair of transfer rails 2a formed on the upper surface of cart 2 and aligned with transfer rails 1a of lift 1, a transfer unit, a stop cart sensor 14, and a deceleration cart sensor 15 for detecting the position of pallet 3 on cart 2. The transfer unit of cart 2 has a configuration substantially similar to that of lift 1, and the transfer unit of cart 2 is provided with a drive motor, a base, and a pair of transfer rollers 2 c. The transfer unit of cart 2 is adapted to hold driven bar 3c and to move pallet 3 toward cart 2 or lift 1 by cooperating with the transfer unit of lift 1.
Deceleration cart-sensor 15 is used to notify the controller of a point in time at which the speed of pallet 3, which is initially moving at a high speed, must be changed to a low speed during transfer of pallet 3 from lift 1 to cart 2. In other words, when deceleration cart sensor 15 detects pallet 3, the controller adjusts the rotation speed of the driving motor so that pallet 3 is transferred at a low speed. Stop cart-sensor 14 serves to notify the controller that pallet 3 has completely arrived on cart 2 during transfer of pallet 3 from lift 1 to cart 2.
As for the sensor that can be used in the present invention, a direct reflection type photosensor is preferable, which includes, as an integrated device, a light emitter for emitting light and a light receiver for receiving light emitted from the light emitter and then reflected from an existing object (for example, in front of the sensor). Each sensor for detecting the position of pallet 3 generates an ON signal when it detects light emitted from its light emitter and then reflected from pallet 3 passing in front of the sensor, and otherwise generates an Off signal.
Upper level sensor 9 and lower level sensor 10 are required to enable lift 1 to travel vertically to reach a transfer level at which pallet 3 may be transferred between the lift and cart 2. Each of these sensors generates an ON signal only when the cart 2 is present in front of it, and generates an Off signal otherwise. Upper level sensor 9 informs the controller of the point in time during the upward movement of lift 1 towards the transfer level at which the speed of lift 1, which initially moves at a high speed, must be changed to a low speed.
When upper level sensor 9 is switched ON, the controller sends a signal to the elevator drive unit to change the lifting speed of elevator 1 to a low speed. When lower level sensor 10 generates an ON signal and the controller receives this signal, the controller sends a signal to the elevator drive unit to stop elevator 1 moving at a low speed.
In contrast, when lift 1 approaches the transfer level during its downward movement, lower level sensor 10 serves to inform the controller of a deceleration time point at which lift 1, which initially moves at a high speed, must be decelerated to a low speed. In other words, when lower level sensor 10 is switched ON, the controller sends a signal to the elevator driving unit to change the lowering speed of elevator 1 to a low speed. When upper level sensor 9 generates an ON signal, the controller sends a signal to the elevator driving unit to stop elevator 1 moving at a low speed.
Referring to fig. 5 and 6, the operation of the parking apparatus of the present invention will now be described by exemplifying the transfer of pallet 3 from lift 1 to cart 2.
When lift 1 with pallet 3 with the vehicle loaded thereon is moved upward at high speed to approach the transfer level and upper level sensor 9 is switched ON, the controller sends a signal to the lift drive unit to lower the lifting speed of lift 1, and when lower level sensor 10 is also switched ON, the controller further sends a signal to the lift drive unit to stop lift 1, at which time both upper level sensor 9 and lower level sensor 10 are in the ON state. In case lift 1 approaches the transfer level during its downward movement, lower level sensor 10 is used to inform the controller of the point of deceleration time, while upper level sensor 9 is used to inform the controller that pallet 3 has reached the transfer level.
Next, when the controller sends a signal for triggering transfer of pallet 3 from lift 1 to cart 2 from the controller, transfer rollers 1c, 2c are rotated at high speed in a direction for moving pallet 3 from lift 1 to cart 2. By the rotation of the pair of transfer rollers 1c, driven bar 3c moves linearly, and thus pallet 3 starts to be transferred from lift 1 to cart 2 at high speed.
When receiving the ON signal from deceleration cart-sensor 15, the controller controls the drive motors connected to transfer rollers 1c, 2c so as to decrease the speed of pallet 3 transferred to cart 2, and at the same time, the controller counts the elapsed time with a timer (not shown) from the time it receives the ON signal from deceleration cart-sensor 15. If stop cart-sensor 14 does not generate an ON signal even after the elapsed time exceeds the prescribed time period, the controller assumes that transfer of pallet 3 fails in the case where a step is generated between lift 1 and cart 2 (because lift 1 is at a lower height than cart 2), in which the wheels of pallet 3 do not climb up the step to cart 2. Next, the controller performs a height correction process in order to complete the transfer of pallet 3.
Although in the preferred embodiment, the counting of elapsed time begins at the time when the controller receives the ON signal from deceleration cart sensor 15, various modifications may be utilized. For example, the count of the elapsed time may start at the time when the controller sends a signal to rotate the transfer rollers 1c, 2c or at the time when the controller receives an OFF signal from the deceleration lift sensor 6 or the stop lift sensor 7, in other words, the count of the elapsed time may start at different points in time, and thus, a given period of time may have different values depending on the selected point in time and can be determined by considering period data obtained by measurement during actual pallet transfer in which no transfer failure of pallet 3 occurs. For example, the time period data may be a time period between the time when the controller sends a signal to rotate the transfer rollers 1c, 2c and the time when the stop cart sensor 14 generates the ON signal, or a time period between the time when the controller receives the OFF signal from the deceleration lift sensor 6 or the stop lift sensor 7 and the time when the stop cart sensor 14 generates the ON signal.
In the correction routine, the controller raises elevator 1 at a decelerated speed until upper level sensor 9 issues an OFF signal. The continuous rotation of transfer rollers 1c, 2c allows the transfer of pallet 3 from lift 1 to cart 2 to be resumed, because the height difference hindering the transfer of pallet 3 is eliminated or the destination becomes lower than lift 1 during the raising of lift 1. When receiving the ON signal from stop cart-sensor 14, the controller sends a signal to the drive motor to stop the rotation of transfer rollers 1c, 2c, and the transfer of pallet 3 from lift 1 to cart 2 is ended.
With regard to the height correction process of raising the lift 1, various modifications can be utilized in addition to the process used in the preferred embodiment. In a variant, the controller may be programmed, without the aid of such a sensor, to raise lift 1 at a decelerated speed for only a predetermined period of time, in such a way that pallet 3 can be completely transferred to cart 2 during the raising of lift 1 caused by the continuous rotation of transfer rollers 1c, 2 c. However, the modified procedure has a disadvantage compared to the procedure of the preferred embodiment, since it must be accompanied by tedious tests to determine the duration of the raising of the lift 1.
Referring to fig. 7 and 8, the process of transferring pallet 3 from cart 2 to lift 1 will now be described.
In the case where lift 1 moves upward at a high speed to approach the transfer level, when upper level sensor 9 is switched ON, the controller sends a signal to the lift drive unit to lower the raising speed of lift 1, and when lower level sensor 10 is switched ON, the controller further sends a signal to the lift drive unit to stop lift 1, when both upper level sensor 9 and lower level sensor 10 are in the ON state. In the case where lift 1 approaches the transfer level during its downward movement, lower level sensor 10 informs the controller of the deceleration time point, and the controller stops the downward movement of lift 1 upon receiving an ON signal from upper level sensor 9.
Then, when the controller issues a signal for triggering transfer of pallet 3 from cart 2 to lift 1, transfer rollers 1c, 2c are rotated at high speed in the direction for moving pallet 3 from cart 2 to lift 1. By the rotation of the pair of transfer rollers 1c, driven bar 3c moves linearly, and thus pallet 3 starts to be transferred from cart 2 to lift 1 at high speed.
When receiving the ON signal from deceleration lift sensor 6, the controller controls the driving motors connected to transfer rollers 1c, 2c so as to decrease the speed of transferred pallet 3, and at the same time, the controller starts counting the time elapsed from the time it received the ON signal from deceleration lift sensor 6 with a timer. If stop lift sensor 7 does not generate an ON signal even after the elapsed time exceeds a prescribed period of time, the controller assumes that transfer of pallet 3 has failed (since lift 1 is at a higher level than cart 2), and thus a step is generated between lift 1 and cart 2 while wheels of pallet 3 do not climb up the step to lift 1. Next, the controller performs a height correction process in order to complete the transfer of pallet 3.
As mentioned previously in the description of transfer of pallet 3 from lift 1 to cart 2, the count of elapsed time may start at the time when the controller sends a signal to rotate transfer rollers 1c, 2c or at the time when the controller receives an OFF signal from deceleration cart sensor 15 or stop cart sensor 14, in other words, the count of elapsed time may start at different points in time, and thus, the prescribed period of time may have different values depending on the selected points in time and can be determined by considering period data measured in an experiment in which transfer failure of pallet 3 has not occurred. For example, the time period data may be a time period between the timing at which the controller sends a signal to rotate the transfer rollers 1c, 2c and the timing at which the stop lift sensor 7 generates the ON signal, or a time period between the timing at which the controller receives the OFF signal from the deceleration cart-sensor 15 or the stop cart-sensor 14 and the timing at which the stop lift sensor 7 generates the ON signal.
In the altitude correction procedure, the controller lowers the lifter 1 at a decelerated speed until the lower altitude sensor 10 issues an OFF signal. Transfer of pallet 3 from cart 2 to lift 1 is resumed by continuous rotation of transfer rollers 1c, 2c, since the height difference hindering transfer of pallet 3 is eliminated or the destination becomes lower than cart 2 during lowering of lift 1. When receiving the ON signal from stop lift sensor 7, the controller sends a signal to the drive motor to stop the rotation of transfer rollers 1c, 2c, and the transfer of pallet 3 from cart 2 to lift 1 is ended.
With regard to the height correction process of lowering the lift 1, various modifications can be utilized in addition to the process used in the preferred embodiment. In a variant, the controller may be programmed to cause the lowering of the elevator 1 at a decelerated speed only for a predetermined period of time (without the aid of such a sensor).
The process of the present invention for solving the transfer failure caused by the height difference between the lift and the cart can be summarized as follows.
First, lift 1 is lowered or raised to approach a transfer height at which pallet 3 can be transferred between lift 1 and cart 2.
Next, in the transfer of pallet 3 from lift 1 to cart 2, if the transfer of pallet 3 to cart 2 is not completed even after a predetermined period of time, lift 1 is raised. In the transfer of pallet 3 from cart 2 to lift 1, if the transfer of pallet 3 to lift 1 is not completed even after a predetermined period of time, lift 1 is lowered.
Meanwhile, if the controller does not receive an ON signal from stop cart sensor 14 or stop lift sensor 7 even after lift 1 is raised or lift 1 is lowered to correct the height difference, the controller stops the entire operation of the parking apparatus to allow the operator to manually handle the problem.
The controller may be equipped with an additional timer (not shown). During the transfer of pallet 3 from lift 1 to cart 2, an additional timer counts the time elapsed from the moment that upper height sensor 9 generates the OFF signal during the upward height correcting movement of lift 1. During the transfer of pallet 3 from cart 2 to lift 1, an additional timer counts the time elapsed from the moment lower height sensor 10 sends the OFF signal during the downward height correction movement of lift 1. The controller is programmed to stop the entire operation of the parking apparatus when it does not receive an ON signal from stop cart sensor 14 or stop lift sensor 7 even after the elapsed time exceeds a prescribed period of time. The count of elapsed time may have different starting points in time.
The prescribed time period described above may be determined by taking into account time period data that can be obtained by measurement during the actual pallet transfer process in which the transfer of pallet 3 is completed by the transfer failure and the accompanying height correction process of lift 1 for resolving the transfer failure.
According to the parking apparatus and the method of controlling transfer of a pallet, since a destination becomes lower than a departure place by eliminating a height difference between a lift and a cart using an existing sensor or by an upward correction movement or a downward correction movement of the lift by a predetermined amount, transfer failure of the pallet between the cart and the lift is significantly reduced, so that the number of operators for providing a manual solution can be reduced. Therefore, the product reliability of the parking apparatus is also increased.

Claims (11)

1. A parking apparatus, comprising:
a pallet on which a vehicle is placed;
a lift moving in a vertical direction with the pallet on top thereof;
a lifter driving unit for raising and lowering the lifter;
a cart that moves in a horizontal direction with the pallet on top thereof;
a transfer unit for transferring the pallet between the lift and the cart;
a lift height detecting device for detecting that the lift reaches a transfer height at which the pallet can be transferred between the lift and the cart;
first transfer completion detecting means for detecting completion of transfer of the pallet from the lift to the cart;
a second transfer completion detecting device for detecting completion of transfer of the pallet from the dispensing truck to the lift; and
a controller that, after it sends a signal to the transfer unit to trigger transfer of the pallet from the lift to the cart, sends a signal to the lift driving unit to raise the lift in a case where the first transfer completion detecting means does not detect completion of transfer of the pallet from the lift to the cart within a prescribed time interval; and
after the controller sends a signal to the transfer unit to trigger the transfer of the pallet from the dispensing car to the lift, the controller sends a signal to the lift driving unit to lower the lift in a case where the second transfer completion detecting means does not detect completion of the transfer of the pallet from the dispensing car to the lift within a prescribed time interval.
2. The parking apparatus according to claim 1, wherein the lift height detecting means includes:
an upper sensor mounted on a portion of the lift facing the cart (2) and generating a first signal when the cart is present in front of the upper sensor and a second signal otherwise; and
a lower sensor mounted on the part of the lift facing the cart (2) and vertically separated from the upper sensor, the lower sensor generating a first signal when the cart is present in front of the lower sensor and a second signal otherwise;
wherein the upper and lower sensors generate the first signal when the lift is in a transfer height.
3. The parking apparatus as recited in claim 2, wherein in the case of transmitting the signal for raising the lift, the controller further transmits a signal for stopping the raising of the lift upon receiving the second signal from the upper sensor, and in the case of transmitting the signal for lowering the lift, the controller further transmits a signal for stopping the lowering of the lift upon receiving the second signal from the lower sensor.
4. The parking apparatus according to claim 1, wherein said first transfer completion detecting means includes a stop cart sensor that generates a first signal when said pallet is present in front of said stop cart sensor and generates a second signal otherwise, said stop cart sensor being mounted on said cart so that it generates said first signal when the transfer of said pallet to said cart is completed.
5. The parking apparatus as recited in claim 4, wherein said first transfer completion detecting means further comprises a deceleration cart-sensor generating a first signal when said pallet is present in front of said deceleration cart-sensor and generating a second signal otherwise, said deceleration cart-sensor being mounted on said cart so that said deceleration cart-sensor informs said controller of a point in time when said pallet should be decelerated to a low speed before the transfer of said pallet to said cart is completed.
6. The parking apparatus as recited in claim 5, wherein said controller checks the lapse of said prescribed time interval by starting the counting of the lapse of time at the time when said deceleration cart-sensor generates the first signal.
7. The parking apparatus of claim 1, wherein said second transfer completion detecting means includes a stop lift sensor generating a first signal when said pallet is present in front of said stop lift sensor and otherwise generating a second signal, said stop lift sensor being mounted on said lift so that it generates said first signal when the transfer of said pallet to said lift is completed.
8. The parking apparatus of claim 7, wherein the second transfer completion detecting means further comprises a deceleration lift sensor generating a first signal when the pallet is present in front of the deceleration lift sensor and a second signal otherwise, the deceleration lift sensor being mounted on the lift so as to inform the controller of a point in time when the pallet should be decelerated to a low speed before the transfer of the pallet to the lift is completed.
9. The parking apparatus of claim 8, wherein the controller checks the lapse of a prescribed time interval by starting the counting of the lapse time at the time when the deceleration lift sensor generates the first signal.
10. Parking device according to any one of claims 2 to 9, wherein said sensor is a photoelectric sensor of the direct reflection type.
11. A method of controlling transfer of a pallet in a parking apparatus provided with a pallet on which a vehicle is placed, a lift moving in a vertical direction with the pallet on top thereof, and a cart moving in a horizontal direction with the pallet on top thereof, the method comprising the steps of:
a) by raising or lowering the lift, the lift is enabled to reach a transfer height at which the pallet can be transferred between the lift and the cart;
b) after the transfer of the pallet from the lift to the cart is triggered, raising the lift if the transfer of the pallet from the lift to the cart is not completed within a prescribed time interval; and
c) after the transfer of the pallet from the dispensing car to the lift is triggered, lowering the lift if the transfer of the pallet from the dispensing car to the lift is not completed within a prescribed time interval.
HK07108469.8A 2004-01-15 2005-01-13 Parking apparatus and control method for the same HK1100688B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020040002924A KR100581623B1 (en) 2004-01-15 2004-01-15 Parking Lot Value and Pallet Transfer Control Method to Solve the Pallet Transfer Inability Problem due to Steps between Lift and Bogie
KR10-2004-0002924 2004-01-15
PCT/KR2005/000110 WO2005067401A2 (en) 2004-01-15 2005-01-13 Parking apparatus with failure-free transfer of pallet between lift and cart, and control method for the same

Publications (2)

Publication Number Publication Date
HK1100688A1 true HK1100688A1 (en) 2007-09-28
HK1100688B HK1100688B (en) 2009-10-16

Family

ID=

Also Published As

Publication number Publication date
KR100581623B1 (en) 2006-05-23
CN1910331A (en) 2007-02-07
WO2005067401A3 (en) 2005-10-20
WO2005067401A2 (en) 2005-07-28
CN100460619C (en) 2009-02-11
KR20050075127A (en) 2005-07-20

Similar Documents

Publication Publication Date Title
US5074103A (en) Bottle loading machine and method
CN111170210B (en) Cargo detection device system for fork of forklift
JP5382407B2 (en) Abnormality detection device for stacker crane
HK1100688A1 (en) Parking apparatus and control method for the same
HK1100688B (en) Parking apparatus and control method for the same
JP3873042B2 (en) Disc ejecting apparatus and method
JP4521544B2 (en) Pillar material transport device for building upstairs
JP4711116B2 (en) Overhead traveling car
JP3701004B2 (en) Unmanned forklift
JP4973927B2 (en) Article conveying device
JP3562439B2 (en) Loading system
JP5182565B2 (en) Article conveying device
JP3761012B2 (en) Goods storage facility
JP3067446B2 (en) Pallet eccentric load detector
JP2000229706A (en) Travel gear for movable body
JPH0761840B2 (en) Lift control device for unmanned forklift
JP4214813B2 (en) Unmanned forklift
JP2002128408A (en) Method for inspection operation in elevator system after occurrence of earthquake, and obstacle detector
JP3960680B2 (en) Liquid filling method
JPH04223999A (en) Table elevating device of unmanned transport vehicle
JP2002211709A (en) Position recognition system for carriage
JPH06100109A (en) Stacker crane
JPH09302976A (en) Elevator parking system
JPH0537224Y2 (en)
JP4511379B2 (en) Elevator stop position detector

Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20190113