JP2663045B2 - Self-failure detection method of detection device in mechanical parking device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for detecting a self-failure of a detection device in a mechanical parking device having the detection device.

(Prior Art) Generally, mechanical parking devices are provided with various detection devices, and output signals from these detection devices are used as operating conditions in the next step.

For example, as one of the detection devices, there is a photoelectric device provided at a height position corresponding to an allowable limit height in the vicinity of an entrance / exit port in order to regulate the height of a vehicle to enter, and enters from the entrance / exit port. If the vehicle is not detected by the photoelectric device,
Assuming that the height is within the allowable limit height, the storage operation as the next step is started. In addition, when it is detected by the photoelectric device, the notification device is activated by the detection signal,
An operator or the like is notified that the vehicle exceeds the allowable limit height, and stops the warehousing operation to prevent the occurrence of an accident.

(Problems to be solved by the invention) However, in this type of photoelectric device, usually,
In the non-detection state, a detection signal is output for the first time when a vehicle higher than the allowable limit enters, and the notification device is activated. Cannot be perceived at all. If a vehicle with a height higher than the allowable limit enters the vehicle in the failure state, no detection signal is output, and therefore, the notifying device does not operate, a parking operation is performed, and the vehicle interferes with a parking device such as a parking shelf. Could cause an accident.

In view of this, usually, at the time of regular maintenance and inspection, it is checked whether or not this type of photoelectric device is out of order to improve the integrity. However, if the above-mentioned failure occurs within the interval between the maintenance and inspection, an accident may still occur.

In view of the above problems, it is an object of the present invention to provide a method of detecting a failure of a detection device at an early stage and preventing the accident from occurring beforehand.

(Means for Solving the Problems) A technical means for achieving the above object is a mechanical parking device provided with a detection device, in which the vehicle is mounted and moved when the vehicle is loaded and unloaded. Equipped with a mounting table, the movement of the mounting table is detected by the detection device,
The point is to compare the output signal state of the detection device with the output signal state in the normal operation state of the detection device to determine whether the detection device is operating normally.

Also, the state of the output signal in the normal operation state of the detection device for detecting the movement of the mounting table is provided as data, and the output signal state of the detection device during the movement of the mounting table is different from the data. In such a case, a method of determining that the detection device has failed may be used.

Further, the detection device includes a plurality of detection sensors each corresponding to the plurality of detection positions and corresponding to the plurality of detection positions to detect the movement position of the mounting table at a plurality of positions. Depending on the number of detection signals,
A method may be used in which the detection sensor that outputs the detection signal of the mounting base indicating the detection position with the smaller number of detection signals determines that the detection sensor has failed in the detection state.

(Operation) According to the present invention, it is determined whether or not the detection device is operating normally by using the movement of the mounting table that is moved when the vehicle is moved in and out of the vehicle. The operating state of the device can be checked, and a failure of the detection device can be found at an early stage.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an elevator-type multi-story parking device 1 as a mechanical parking device, and a lifting platform 3 as a mounting platform on which a vehicle W is mounted is provided at the center of a parking structure 2 so as to be able to move up and down. A plurality of parking shelves 4 for accommodating and parking the vehicle W are provided on each of the left and right sides of the elevating platform 3 along the elevating route.

A base 5 is fixed to the uppermost stage of the parking shelf 4 on one side, and an elevating device 6 for operating the elevating platform 3 is installed on the base 5.

The elevating table 3 is an elevating frame configured in a substantially rectangular shape in plan view.
3A, and four corners of the lifting frame 3A are suspended by wire ropes 7, respectively. Each of these four wire ropes 7 passes through a guide wheel 8 provided at the uppermost stage of the parking shelf 4, and then is collected and wound around a drive unit of the lifting / lowering device 6.
It is connected to. Then, each wire rope 7 is wound up and down by the forward and reverse drive operation of the drive motor 6A of the elevating device 6, and the elevating table 3 is moved up and down here.

An entrance / exit opening 11 for vehicle W entry / exit is formed at the center of the ground floor front side of the multi-story parking device 1, and in order to detect the height of the vehicle W entering the elevator 3 from the entrance / exit opening 11, On the left and right side walls of the ground floor, an optoelectronic device PH is provided as a detecting device composed of a pair of a light emitter and a light receiver. The height h of the photoelectric device PH from the ground floor 12 is set to be substantially the same as or slightly lower than the allowable limit height H of the parking shelf 4.

Therefore, when the vehicle W enters the lift 3, the photoelectric device
When the PH is blocked, the received light signal is interrupted and the photoelectric device
A detection signal is output from the PH side, and it is detected from the detection signal that the height of the vehicle W is equal to or higher than the height h. When the photoelectric device PH is not shaded, the light receiving signal is not interrupted, and no detection signal is output from the photoelectric device PH side.
It is detected that the height of the vehicle W is less than the height h.

Also, as shown in FIG.
When the lifting platform 3 is moved up and down, the lifting frame 3A, which is a component of the mounting platform, is placed on the side of the photoelectric device.
It is configured to move across the transmitter and receiver of the PH. When the lifting frame 3A crosses the photoelectric device PH, the lifting frame 3A is configured to be detected by the photoelectric device PH.

As shown in FIGS. 3 and 4, the elevating platform 3 is provided with a traversing vehicle 14 which is a component of the mounting platform on the elevating frame 3A, and the lower part of the traversing vehicle 14 rolls around a longitudinal axis. A free wheel 14A is provided. Each wheel 14A is configured to be guided movably in the left-right direction along the guide surface 3B of the lifting frame 3A.

A traversing device 15 is provided before and after the lifting frame 3A, respectively.The traversing device 15 includes a driving motor 16 fixed to the lifting frame 3A side, and a driving gear 17 fixed to a driving shaft of the driving motor 16. A crank gear 18 pivotally supported by the lift frame 3A and meshed with the drive gear 17,
And a base plate 19 fixed to the 14 side. A pair of wheels 18A are provided at a predetermined interval on the upper surface side of the crank gear 18 so as to freely roll around the vertical axis, and the wheels 18A are slidably provided on the lower surface side of the base plate 19. A plurality of fitting cam grooves 19A to be fitted are formed at a predetermined pitch in the left-right direction.

The drive gear 17 is driven by forward and reverse rotation of the drive motor 16.
Are driven forward and reverse, and the crank gear 18 meshing with the drive gear 17 is driven forward and reverse. The pair of wheels 18A is rotated around the rotation axis of the crank gear 18 by the forward / reverse driving of the crank gear 18, and the rotation of the wheels 18A pushes the base plate 19 in the left-right direction.
Is operated to move in the left-right direction as shown by the imaginary lines in FIGS.

A resolver 20 for detecting the forward / reverse rotation amount of the drive motor 16 via a speed reducer (not shown) is provided on the side of the lifting frame 3A located near the drive motor 16, and detects the resolver signal to drive. Stop sensors P ₁ and P as detection sensors for controlling the start and stop of the motor 16 at a predetermined position.
₂ , P ₃ and the stop position confirmation sensors Q ₁ , Q ₂ , Q ₃
Are provided corresponding to the left position, the center position, and the right position, respectively. Then, as shown in the operation chart of FIG. 5, the stop sensors P ₁ , P ₂ ,
Pairs of P ₃ and the position confirming sensor Q _1, Q _2, Q ₃ outputs an ON signal, other sensors _{P 1, P 2, P 3} , Q 1, Q 2, Q 3 are turned off You. A detecting device for detecting the moving position of the traversing carriage 14 is constituted by these sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , Q ₃ , and the traversing carriage 14 is moved by a predetermined amount in the left-right direction. It is controlled to be.

A pallet 22 for mounting the vehicle W is supported on each of the parking shelves 4, and can be moved in the left-right direction by a driving device (not shown). On the other hand, the pallet is also on the side of the trolley 14
A drive device (not shown) for moving the 22 in the left-right direction is provided. Then, the trolley 14 is moved to the left position or the right position, and the respective drive devices operate in a state where the clearance between the parking shelf 4 and the trolley 14 is substantially eliminated, so that the pallets 22 are transferred between each other. It is configured.

Reference numeral 24 denotes a control means having an operation panel and the like and having a microcomputer built therein, which comprehensively controls the entire multistory parking device 1. That is, management of the entrance / exit state, drive control of the elevator 3 and the pallet 22 at the time of entrance / exit, signal processing judgment of the photoelectric device PH and the sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , Q _3. And so on. The control means 24 includes a failure determination device 26 for the photoelectric device PH and a sensor failure determination device 27 for the traversing device.

As shown in FIG. 6, when the lifting frame 3A of the elevator 3 passes across the photoelectric device PH, the failure determination device 26 of the photoelectric device PH shuts off the photoelectric device PH in a normal operation state and generates a detection signal. Since the data is output, data for outputting a detection signal when the vehicle crosses is stored. Then, the signal state when the lifting frame 3A actually passes across the photoelectric device PH is detected, the detection result is compared with the data, and when the detection signal is output, it is determined that the operation is normal. Equipped with a discriminating function for discriminating and detecting a failure if no detection signal is output, outputting a discrimination signal of the result of discriminating whether it is normal or faulty, and notifying by sound or light according to the discrimination signal. The device 29 is configured to notify the operator.

Further, as shown in FIG. 7, when the ON signals output from each of the sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , Q ₃ extend over a plurality of positions, as shown in FIG. The sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , and Q ₃ that output the ON signal indicating the detection position with the smaller number of ON signals indicate the ON signal output state. A discriminating function of discriminating that there is a failure is provided, and a discrimination signal of a discrimination result of normality or failure is output in the same manner as described above. Lamps LP ₁ , L arranged on the display unit 31 of 24 corresponding to the sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , Q _{3
P 2, LP 3, LQ 1} , LQ 2, LQ 3 sensors P ₁ that has failed at is lit ON signal output _{state, P 2, P 3, Q} 1, Q 2, Q 3 to display It is configured.

On the other hand, sensors P ₁ , P ₂ ,
When the ON signal from P ₃ , Q ₁ , Q ₂ , Q ₃ extends to multiple positions,
The control unit of the control means 24 is configured to determine the position by giving priority to the detection position having the larger number of ON signals.

The embodiment of the present invention is configured as described above. When the vehicle W is to be stored, first, a storage command is input by the operation panel of the control means 24. The pallet 22 on the parking shelf 4 which has not been stored is called by this storage instruction and is transferred to the elevator 3 and thereafter the elevator 3 is returned to the ground floor and stands by. At this time, the traversing carriage 14 is located at the center of the lifting frame 3A.

Next, as shown in FIG. 8, the vehicle W enters the pallet 22 on the lift 3 from the entrance 11. At this entry, the height of the vehicle W is detected by the photoelectric device PH, and the photoelectric device PH is detected.
If no detection signal is output from the side, it is determined that the height is within the allowable limit height range, and the process moves to the next warehouse entry operation. On the other hand, when a detection signal is output from the photoelectric device PH side, the warehousing operation is stopped and a notification device such as an alarm is activated by the detection signal to notify an operator or the like that the height exceeds the allowable limit height. . In this case,
Since it is not possible to enter the warehouse, the vehicle W may be operated to leave the pallet 2.

Next, when the operation is shifted to the warehousing operation, the elevator 3 is moved up to the position of the parking shelf 4 where the pallet 22 is called. When the lift 3 is lifted, the failure determination device 26 is operated, and as shown in FIG.
The signal state when passing across the PH is detected, and the detection result is compared with the stored data to determine whether the photoelectric device PH is operating normally, and a determination signal according to the determination result is generated. Then, in response to the discrimination signal, the annunciator 29 is operated, and when the photoelectric device PH is informed that it is normal, the storage operation may be continued. On the other hand, if the photoelectric device PH is notified of a failure, the storage operation may be temporarily stopped, and the elevator 3 may be returned to the ground floor. That is, when the photoelectric device PH is out of order, the detection signal is not output even if the vehicle W is higher than the allowable limit height, and the vehicle W on the pallet 22 may be higher than the allowable limit height. It is.

If the photoelectric device PH is operating normally and the elevator 3 is moved up to the parking shelf 4 position, the traversing carriage 14 is moved from the center position to the predetermined parking shelf 4 side, and after the traversing operation, the pallet 22 is moved. , The pallet 22 carrying the vehicle W is transferred from the trolley 14 to the parking shelf 4, and the warehousing operation ends.

When the traversing carriage 14 is traversed, the sensor failure determination device 27
Is activated. For example, as the center position check sensor Q ₂ shown in FIG. 5 virtual line, if the faulty on-signal state, if stop transverse carriage 14 is moved to the left position, on the number of signals indicating a left position There are two of the left position stop sensor P ₁ and the left position check sensor Q _1, since on the number of signals indicating the center position is one of the central position check sensor Q _2, less central position confirmation of oN signal speed sensor It is determined that Q ₂ has failed in the ON signal output state, and the operator is notified of the failure by the alarm 30, and the operator perceives the failed sensor Q ₂ from the lighting location of the lamp LQ _{2 on} the display unit 31. be able to.

As described above, the failure determination device 26 and the sensor failure determination device
Reference numeral 27 denotes an elevating frame 3A that is moved and operated when the vehicle W is moved in and out, and a resolver 20 that is interlocked and connected to the traversing truck 14.
By using the sensor signal extracted from, because it is a method for determining a failure of the photoelectric device PH and the sensors _{P 1, P 2, P 3} , Q 1, Q 2, Q 3, each of the entry and leaving operation, photoelectric The device PH and each sensor P ₁ , P ₂ ,
Inspection can be performed from the operating states of P ₃ , Q ₁ , Q ₂ , and Q ₃ , and early detection of a failure is possible. Accordingly, an accident caused by interference between the vehicle W having a height exceeding the allowable limit and the parking shelf 4, an accident caused by the lifting and lowering operation of the hoisting platform 3 in an unbalanced state of the hoisting platform 3 at a position other than the center position, and An accident or the like due to the transfer operation of the pallet 22 when the pallet 22 is not moved to the position or the right position can be prevented beforehand.

In addition, the method of determining whether the photoelectric device PH or each of the sensors P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , and Q ₃ has failed is a method in which each is determined based on its own output signal state. There is no need for a detection device for checking whether a failure has occurred.

In the above embodiment, the output signals of the stop sensors P ₁ , P ₂ , P ₃ and the stop position confirmation sensors Q ₁ , Q ₂ , Q ₃ are respectively extracted from the resolver signals. The confirmation sensors Q ₁ , Q ₂ , and Q ₃ may be provided between the trolley 14 and the lifting frame 3A to directly detect the movement position of the trolley 14. Further, although a structure is shown in which the photoelectric device PH is traversed by the lifting frame 3A, a method in which a light shielding plate such as a metal plate is attached to the lifting frame 3A and the photoelectric device PH is shielded by the light shielding plate may be adopted. Furthermore, the position crossing the photoelectric device PH is not limited to the time of ascending to the second floor, and in the case of a three-dimensional underground parking device, a method of separately shielding light with a light-shielding member when descending may be adopted.

Further, instead of the failure determination device 26, when the lifting frame 3A passes across the photoelectric device PH, the photoelectric device PH is shielded and a detection signal is output, and a notification device such as an alarm device is activated by the detection signal. This may determine whether the operator is operating normally.

Furthermore, instead of the sensor failure determination device 27,
When an ON signal is output from P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , Q ₃ ,
The corresponding lamps LP ₁ , LP ₂ , LP ₃ , LQ ₁ , LQ ₂ , LQ ₃ of the display section 31 are turned on, and the lighting states of the lamps LP ₁ , LP ₂ , LP ₃ , LQ ₁ , LQ ₂ , LQ ₃ The sensor is in the ON signal output state from the operator
Failures of P ₁ , P ₂ , P ₃ , Q ₁ , Q ₂ , and Q ₃ may be determined.

(Effects of the Invention) As described above, according to the present invention, the detection device detects the movement of the mounting base that is moved when the vehicle is moved in and out of the vehicle, and determines the normality of the detection device based on the output signal state of the detection device. A method of comparing the output signal state in the operating state to determine whether the detection device is operating normally,
Since the operation state of the detection device can be checked each time the loading / unloading operation is performed, a failure of the detection device can be found at an early stage, and an accident caused by the failure of the detection device can be prevented.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a schematic front view, FIG. 2 is a schematic front view, FIG. 3 is a front view of a main part of an elevator, and FIG. , FIG. 5 is an operation chart of each detection sensor, FIGS. 6 and 7 are block diagrams showing the operation of the failure determination device, FIG. 8 is an explanatory diagram when the vehicle enters, and FIG. FIG. 1 ...... multistory parking apparatus, 3 ...... lifting platform, 3A ...... lifting frame, 14 ...... transverse cart, W ...... vehicle, PH ...... photovoltaics, P _1, P _2, P ₃ ...... stop sensor, Q ₁ , Q ₂ , Q ₃ …… Position confirmation sensor

Claims (3)

(57) [Claims] 1. A mechanical parking device comprising a detecting device, comprising: a mounting table on which the vehicle is mounted and moved when the vehicle is moved in and out of the vehicle, wherein the detection device detects the movement of the mounting table. Detecting and comparing the output signal state of the detection device with the output signal state in the normal operation state of the detection device to determine whether the detection device is operating normally. Self-failure detection method for the detection device. 2. The apparatus according to claim 1, wherein the state of the output signal in a normal operation state of the detection device for detecting the movement of the mounting table is provided as data, and the state of the output signal of the detection device when the mounting table moves is compared with the data. 2. The method for detecting a self-failure of a detection device in a mechanical parking device according to claim 1, wherein it is determined that the detection device is out of order when the detection is performed. 3. The detecting device includes a plurality of detection sensors each corresponding to the plurality of detection positions and corresponding to the plurality of detection positions so as to detect the movement position of the mounting table at a plurality of positions. The detection sensor outputting the detection signal of the mounting table indicating the detection position of the detection signal having the smaller number of detection signals is determined to be defective in the detection state according to the number of detection signals of the mounting table. Item 1. A method for detecting a self-failure of a detection position in the mechanical parking device according to Item 1.