JP2000257295A - Elevating/lowering control device for parking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevating/lowering control device suitable for a parking device in which a plurality of elevating/lowering vehicle support tables to be selectively elevated/lowered between a lower vehicle support level and an upper vehicle support level are continuously arranged in the horizontal direction. SOLUTION: An elevating/lowering control device of a parking device is provided with a wire-like body 13 one end of which is locked to a fixing frame through a spring 23 and the other end of which is re-wound/delivered by a winding drum 10, and an intermediate portion of which suspends a plurality of elevating/lowering vehicle support tables 1A-1C. Sensors 27-29 to detect the change of the position of one end of the wire-like body 13 accompanied by the change in tension, a pulse transmitter 18 to detect the rotational quantity or the rotational time of the winding drum 10, and a control means 43 are provided, and the control means 43 controls the elevating/lowering and the stop of the elevating/lowering vehicle support tables 1A-1C to be selectively elevated/lowered by the wire-like body 13 based on the information on detection by the sensors 27-29, the detected value by the pulse transmitter 18, and the set value to be compared with the detected value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift control system for a parking apparatus comprising a plurality of vertically movable vehicle supports which are selectively raised and lowered between a lower vehicle support level and an upper vehicle support level. It concerns the device.

[0002]

2. Description of the Related Art In a parking device having a plurality of vertically movable vehicle supports arranged side by side in a horizontal direction, an independent vertically movable drive means with a motor is provided for each of the vertically movable vehicle supports. Had the disadvantage of being very expensive.

In order to solve such a problem, a means for selectively switching a plurality of vertically movable vehicle supports to a state in which the vertically movable vehicle supports can be selectively raised and lowered is provided. A parking device has been considered in which the platform is suspended by a cable system of one system, and the lifting and lowering vehicle support base can be selectively driven up and down by a pull-in operation of the cable system of the one system. An object of the present invention is to provide a lift control device suitable for a parking device having such a configuration.

[0004]

That is, the means for solving the problems according to the present invention are indicated by reference numerals in the embodiments described later.
A plurality of vertically movable vehicle supports 1A to 1C which are vertically movable between a lower vehicle support level D and an upper vehicle support level U and are arranged side by side, and alternatively, these vertically movable vehicle supports 1A to 1C are selectively used. Means for switching to an ascending / descending state (vehicle support receiving frame 35), one end of which is locked to fixed frame 4 and the other end of which is operated by a retracting / dispensing means (such as winding drum 10); A rope-like body 13 is provided which is hung on suspended guide wheels 15a to 15c which are pivotally supported by the lift vehicle supports 1A to 1C and suspends the plurality of lift vehicle supports 1A to 1C. A lift control device for a parking device, wherein a spring 23 is provided between one end of the cord-like body 13 and the fixed frame 4.
And sensors 27 to 29 for detecting a change in the position of one end of the cord 13 due to a change in tension acting on the cord 13, and operation of the pull-in / feed-out means (the winding drum 10 and the like). Detecting means (such as the pulse transmitter 18) for directly or indirectly detecting the amount (rotation amount) or the operation time (rotation time) and a control means 43 are provided. Based on the detection information of one end position of the cord 13, the detection value of the detection means (such as the pulse transmitter 18), and the set value which is compared with the detection value of the detection means (such as the pulse transmitter 18), The lifting / lowering stop control of the lifting / lowering vehicle support bases 1A to 1C that are selectively driven up and down by the cord-like body 13 is performed.

In implementing the apparatus of the present invention having the above configuration,
As the detection means, a pulse transmitter 18 interlocked with the pull-in / feed-out means (the winding drum 10 or the like) can be used, and the count value of the transmitted pulses of the pulse transmitter 18 can be used as the detection value. Further, the detection means may use a measured value of an operation time of the pull-in / feed-out means (such as the winding drum 10) as a detection value.

[0006] As the sensor, an elevator vehicle support 1
The cable-like body 13 in the extension direction by the spring 23 after A to 1C reaches the lower limit (lower vehicle support level D).
Lower limit detection sensor 2 that detects movement of one end over a certain distance
7 and an ascending limit detecting sensor 28 for detecting a movement of one end of the cord-like body 13 in a retracting direction against the spring 23 after the ascending and descending vehicle supports 1A to 1C reach the ascending limit.
And the rope-like body 13 in the retracting direction against the spring 23 beyond the position detected by the ascending limit detection sensor 28.
An overdrawing detection sensor 29 for detecting the movement of one end over a certain distance can be provided.

In this case, the overdrawing detection sensor 29
When the detector is operated, the detecting means (such as the pulse transmitter 18)
The lifting stop control of the lift vehicle support bases 1A to 1C can be performed irrespective of the detection value of

Further, the detecting means (pulse transmitter 18
And the like, as set values to be compared with the detection values of the lift vehicle support bases 1A to 1C, the lower limit range values of the lift vehicle support bases 1A to 1C, the middle range values of the lift vehicle support bases 1A to 1C, and the lift vehicle support bases 1A to 1C.
It is possible to set an ascending limit stop range value of 1C, an overextending range value that exceeds the descending stop range value, and an overdrawing range value that exceeds the ascending stop range value.

In this case, the detecting means (pulse transmitter 1)
8) when the detection value of the over-extension range or the over-retraction range value is reached, the lifting and lowering stop control of the ascending and descending vehicle support bases 1A to 1C is performed irrespective of the detection state of the sensors 27 to 29. can do.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
1C is an upper vehicle support level U and a lower vehicle support level D
, Which can be individually lifted and lowered between the two, and are arranged side by side in the horizontal direction. Reference numerals 2A and 2B denote a number of laterally movable vehicle supports that are one less than the ascending and descending vehicle supports 1A to 1C, and are arranged in parallel with the ascending and descending vehicle supports 1A to 1C at the lower vehicle support level D. ing. Reference numeral 3 denotes a lifting drive means of the lifting vehicle support bases 1A to 1C, and reference numeral 4 denotes a fixed frame.

Each of the up-and-down vehicle support bases 1A to 1C has a rear end vertical frame portion 6 whose left and right sides are vertically engaged with a raising / lowering guide rail / post 5 of a fixed frame 4, and the rear end vertical frame portion 6 And a pair of left and right reinforcing braces 8 obliquely erected between the two.

The lifting drive means 3 includes a take-up drum 10 serving as a pull-in / feed-out means supported by a front-rear support shaft at a position near one end of an upper horizontal beam portion 9 of the fixed frame 4.
The take-up drum 10 mounted on the horizontal beam 9
A brake motor 12 with a speed reducer, which is interlocked and connected via a chain transmission means 11, a single cord-like body (a wire rope in this embodiment) 13 which is wound and fed by the winding drum 10, and A spring unit 14 for locking the free end of the cord-like body 13 to the other end of the horizontal beam 9, and a support shaft in the front-rear direction at the center of the rear vertical frame 6 of each of the elevating vehicle supports 1A to 1C. Guide wheels 15a to 15c pivotally supported by, and each of the suspended guide wheels 15a to 15c.
A pair of front and rear suspension guide wheels 16a supported by the horizontal beam portion 9 by a front-rear support shaft so as to be located directly above 15c.
To 16c and 17a to 17c.

A pulse transmitter (such as a rotary encoder) 18 is connected to the output shaft of the brake motor 12 with a speed reducer. As a result, the pulse transmitter 18 is interlocked with the winding drum 10, but the pulse transmitter 18 may be directly linked to the winding drum 10, or may be connected to the chain of the chain transmission means 11. It is also possible to interlock and connect the pulse transmitter 18 to the free idle gear that is combined.

The above-mentioned cord-like body 13 is moved from the winding drum 10 to a suspension guide wheel 16a, a suspension guide wheel 15a, a suspension guide wheel 17a, a suspension guide wheel 16b, and a suspension guide wheel. Fifteen
b, the guide wheels for suspension 17b, the guide wheels for suspension 16c, the guide wheels for suspension 15c, and the guide wheels for suspension 17c, in this order, in the same direction as the winding direction with respect to the winding drum 10. And the free end is locked to the horizontal beam 9 of the fixed frame 4 via the spring unit 14.

As shown in FIG. 4, the spring unit 14, which locks the free end of the cord 13 to the horizontal beam 9 of the fixed frame 4, moves the bracket 20 mounted on the horizontal beam 9 horizontally and horizontally. And the cable body 13 at one end.
, A spring receiving plate 22 attached to the other end of the rod 21, and a compression coil spring 23 loosely fitted to the rod 21 between the spring receiving plate 22 and the bracket 20. The spring unit 14 is provided with a sensor unit 24. The spring 23 is
In a state where a vehicle having a limited weight is loaded on all the lifting vehicle supports 1A to 1C, all the lifting vehicle supports 1A are mounted.
１1C is hung by the cord 13,
The tension applied to the cord 13 can be larger than the tension acting on the cord 13.

The sensor unit 24 has a member 25 to be detected attached between the bracket 20 of the rod 21 and the end of the cord-like body, and is arranged so as to surround the member 25 to be detected and has one end. A sensor support member 26 coupled to the bracket 20;
, A lower limit detection sensor 27, an upper limit detection sensor 28, and an over-pull-in detection sensor 29. As each of the sensors 27 to 29, an appropriate one of various contact-type or non-contact-type sensors (limit switch, proximity switch, photoelectric switch, etc.) can be used. In this case, the detection member 25 made of a magnetic material is used.
Using a proximity switch that detects the contact by contact.

As shown in FIGS. 1 and 2, a pair of front and rear guide rails 31 laid laterally on the base member 30 of the fixed frame 4 are provided on each of the laterally movable vehicle supports 2A and 2B.
a, a pair of left and right wheels 32 mounted on the front guide rail 31a and a pair of left and right flanged wheels 3 fitted on the rear guide rail 31b.
3 and a brake motor 34 with a speed reducer that rotationally drives a pair of front and rear wheels 32 and 33 on one side, and further, in the vicinity of its rear end, receives the upper lifting vehicle support bases 1A to 1C. A gate-shaped vehicle support receiving frame 35 is provided upright.

On the other hand, as shown in FIG. 2, when the laterally movable vehicle supports 2A and 2B are located directly below the horizontal movable platform 7 as shown in FIG. Vehicle support base receiving frame 3 on support bases 2A and 2B
A pair of right and left abutment members 36 located directly above 5 are provided. In addition, as shown in FIG.
At the upper end of the rear end vertical frame portion 6 of A to 1C, when the up-and-down vehicle support bases 1A to 1C are raised to the ascending limit position, a pair of right and left provided below the horizontal beam portion 9 of the fixed frame 4 is provided. A pair of left and right contacted members 38 that are in contact with the contact portion 37 are provided.

As shown in FIG. 6, the lift control device of the parking device having the above-described structure includes a motor controller 40 for controlling the pulse transmitter 18, the sensors 27 to 29 of the sensor unit 24, and the motor 12 of the lift drive means 3. , And an operation panel 41 are constituted by control means 43 such as a microcomputer and a programmable sequencer connected via an I / O interface 42.

The control means 43 has a counter function for counting the number of pulses transmitted from the pulse transmitter 18, and stores a set value for comparison with the pulse count value counted by the counter function in a built-in memory. Remembers. The set values are automatically set and stored by selecting the teaching mode on the operation panel 41, manually operating the lifting / lowering driving means 3, and actually driving the lifting / lowering vehicle supports 1A to 1C vertically.

More specifically, as the set value,
The over-pulling (overwinding) range value, ascending limit stop range value, ascending / descending range value, descending stop range value, and over-extending range value shown in the pulse count value column of the table shown in FIG. It is automatically set by the elevation drive of the vehicle support bases 1A to 1C. That is, an ascending command is input from the operation panel 41, the motor 12 of the ascending / descending drive means 3 is driven to rotate forward through the motor controller 40, and the winding drum 10 winds the cord-like body 13. As a result, although there is a variation in the start / stop timing depending on the presence or absence of the loaded vehicle and the weight of the loaded vehicle, finally, all the lift vehicle supports 1A to 1A to 1
1C is lifted up to the ascending limit at which the contacted member 38 contacts the contact portion 37. After that, the wound rope 13 compresses the spring 23 via the rod 21. When the amount of deflection of the spring 23 in the compression direction reaches a certain amount, as shown in FIG. 5C. Then, the detected member 25 is detached from the ascending limit detection sensor 28, and the ascending limit detection sensor 28 is switched to the off state. In the teaching mode, the motor 12 is controlled to stop and brake only by the signals of the sensors 27 to 29 (the same applies to the manual operation mode).
The motor 12 is stopped and braked via the motor controller 40 based on the switching of 8 to the off state. At this time, the pulse count value in the control means 43 is reset to zero, and the count value is set to “0”.
Is stored as a rising end stop range value.

Next, a lowering command is input from the operation panel 41, and the motor 12 of the lifting / lowering driving means 3 is driven to rotate in the reverse direction via the motor controller 40, so that the winding drum 10
Is pulled out of the cord-shaped body 13. As a result, each of the ascending and descending vehicle supports 1A to 1C at the ascending limit descends by gravity along with the extension of the cord 13, and the ascending and descending vehicle supports located right above the laterally moving vehicle supports 2A and 2B. In FIG. 1, the lift vehicle supports 1A, 1B are received at the upper vehicle support level U by the vehicle support table receiving frame 35 of the laterally moving vehicle supports 2A, 2B via the contact member 36, and the remaining lift vehicle support is supported. In FIG. 1, only the ascending and descending vehicle support 1C further descends from the upper vehicle support level U to reach a lower limit that can be received on the floor side, that is, a lower vehicle support level D at which the vehicle can be taken in and out. After that, the extended cord-like body 13 is pulled by the spring 23 via the rod 21, and when the amount of bending of the spring 23 in the extension direction reaches a certain amount, as shown in FIG. The detected member 25 is detached from the detection sensor 27, and the lower limit detection sensor 27 is switched to the off state, and based on this, the motor 12 is controlled via the motor controller 40.
Is stopped and braked. On the other hand, the transmission pulse of the pulse transmitter that rotates in conjunction with the rotation of the motor 12 is transmitted to the control unit 43.
The value obtained by adding a certain number to the pulse count value when the falling end detection sensor 27 is switched to the OFF state is stored and held as the falling end stop range value.

The over-pulling (overwinding) range value is automatically set and held so that a value whose absolute value is larger than the upper limit value (-value) of the rising limit stop range value by "1" becomes a lower limit value. A range between a value which is larger by “1” than the lower limit value (+ value) of the limit stop range value and a value which is smaller by “1” than the lower limit value of the descending stop range value is automatically set and held as a range value during ascending and descending. The over-feed range value is automatically set and held so that a value larger by "1" than the upper limit value of the lower limit stop range value becomes the lower limit value.

When the automatic operation mode is selected on the operation panel 41, the control means 43 sets the count value of the transmitted pulse of the pulse transmitter 18 and each set value automatically set and held as described above, and An automatic operation program for automatically controlling the motor 12 via the motor controller 40 based on the on / off state of each sensor 27 to 29 of the sensor unit 24 is provided.

In the parking device configured as described above, the laterally movable vehicle support 2 located at the lower vehicle support level D
A, 2B, and an elevating vehicle support (see FIG. 1) in a state of being lowered to a lower vehicle support level D among the elevating vehicle supports 1A to 1C.
Then, the vehicle can be taken in and out of the elevating vehicle support 1C) at any time. In this state, the lift vehicle supports 1A and 1B at the upper vehicle support level U
The abutted member 38 is slightly lowered from the upper limit at which the abutted member 38 abuts on the abutting portion 37, and the laterally moving vehicle support 2A,
The contact member 36 is attached to the vehicle support base receiving frame 35 of 2B.
1C, which has been received through the lower side and is lowered to the lower vehicle support level D, is supported on the floor surface side. At this time, the ON / OFF state and the pulse count value of each of the sensors 27 to 29 are as shown in the row 9 of the table in FIGS. 5A and 7 as described in the teaching mode. It is off from the detection member 25, and the pulse count value is in the lower limit stop range.

From the state shown in FIG. 1, for example, when a vehicle is to be moved in and out of the lift vehicle support 1A at the upper vehicle support level U, a call command for the lift vehicle support 1A is input on the operation panel 41. As a result, the motor 12 of the lifting drive means 3 is driven to rotate forward, and the winding drum 10 winds the cord 13. As a result, as described in the teaching mode, eventually, all the ascending and descending vehicle support bases 1A to 1C are lifted up to the ascending limit where the abutted member 38 abuts on the abutting portion 37, and the laterally moving vehicle support 1A to 1C is lifted. Vehicle support base receiving frame 35 of tables 2A and 2B
And the contact member 36 of the lift vehicle support 1A, 1B directly above
Between them, a clearance is provided to allow the laterally movable vehicle supports 2A, 2B to laterally move.

Thus, the rope 13 is moved up and down the vehicle support base 1.
In the process of lifting C, the load on the ascending and descending vehicle support 1C side is applied to the cord 13, and thus the detected member 25 (rod 21) resists the urging force of the spring 23 as shown in FIG. The sensor is pulled by the cord 13 and moves by a certain distance, and all the sensors 27 to 29 including the lower limit detection sensor 27 are turned on to detect the detected member 25. And the pulse count value is in the range during the ascent and descent,
As shown in row 5 of the table in FIG. 7, the control unit 43 determines that the vehicle is in the middle of normal ascent and descent.

As described above, all the lift vehicle supports 1A-
After 1C reaches the ascending limit, as described in the teaching mode, when the wound cord 13 compresses the spring 23 by a certain amount, as shown in FIG. The detected member 25 comes off, and only the ascending limit detection sensor 28 switches to the off state. At this time, as shown in row 3 of the table of FIG. 7, if the pulse count value is within the ascending limit range, the control means 43 determines that all the ascending and descending vehicle supports 1A to 1C have reached the ascending limit. , The motor 12 via the motor controller 40
Is stopped and the winding of the cord 13 by the winding drum 10 is stopped.

Subsequently, the control means 43 operates the motors 34 of the two laterally moving vehicle supports 2A, 2B in a predetermined rotation direction via a motor controller not shown in FIG. A pair of wheels 3
2 and 33 are driven so that the two laterally moving vehicle supports 2A and 2 are moved to a position directly below the elevating vehicle support 1A to be taken in and out of the vehicle.
B is moved laterally on a pair of front and rear guide rails 31a and 31b. If each of the laterally-moving vehicle supports 2A and 2B reaches the travel limit and stops automatically, and the space right under the ascending and descending vehicle support 1A to be taken in and out of the vehicle is vacant, the control means 43 then controls the motor controller 40 via the motor controller 40. Motor 1 of lifting drive means 3
2 is further rotated in the reverse direction, and the cord 13 is paid out by the winding drum 10. When the winding drum 10 starts feeding the cord 13, the control means 43 resets the pulse count value to zero.

However, as described in the teaching mode, each of the ascending and descending vehicle supports 1A to 1
C descends by gravity along with the extension of the cord-like body 13, and the ascending and descending vehicle supports 1B, 1C located directly above the laterally movable vehicle supports 2A, 2B move through the contact member 36. The vehicle support base receiving frames 35 of the vehicle support bases 2A and 2B are received at the upper vehicle support level U, and only the ascending and descending vehicle support 1A to be taken in and out of the vehicle is supported by the upper vehicle support level U.
From the lower limit, which can be received on the floor side,
That is, the vehicle reaches the lower vehicle support level D at which the vehicle can be taken in and out.

As described above, in the process in which the rope 13 is extended and the elevating vehicle support 1A to be taken in and out of the vehicle is lowered, the load on the elevating vehicle support 1A is applied to the rope 13. As shown in FIG.
The (rod 21) is pulled by the cable body 13 against the urging force of the spring 23 and moves by a certain distance, and all the sensors 27 to 29 including the lower limit detection sensor 27 detect the detected member 25. State. Of course, the same applies to the case of lifting the lifting vehicle support 1C. However, the presence or absence of a loading vehicle of the lifting vehicle support to be raised and lowered between the upper vehicle support level U and the lower vehicle support level D, and the lifting vehicle support When the entire load of 1A to 1C is applied to the cord 13 and when only the load of one elevating vehicle support is applied to the cord 13, the load acting on the cord 13 during the elevating operation is different. . Therefore, the position of the detected member 25 during the elevating operation slightly changes due to the change in the load. In any case, all the sensors 27 to 29 detect the detected member 25 during the elevating operation. The positions of the lower limit detection sensor 27 and the upper limit detection sensor 28 at both ends and the length of the detected member 25 are set so that

The ascending and descending vehicle support 1A to be taken in and out of the vehicle is received at the lower limit, and the other ascending and descending vehicle supports 1B, 1C are received.
Is received by the laterally moving vehicle supports 2A and 2B, as described in the teaching mode, as shown in FIG.
And switches to the off state. At this time, as shown in row 9 of the table of FIG. 7, if the pulse count value is within the lower limit range, the control unit 43 sets the calling vehicle 1
A is determined to have reached the lower limit (lower vehicle support level D), and the motor 12
Is stopped and the feeding of the cord 13 by the winding drum 10 is stopped.

As is clear from the above description, the operation panel 41 issues a call command to call the lower vehicle support level D to the lower vehicle support level U at the upper vehicle support level U among the lift vehicle supports 1A to 1C. When the input is performed, all the ascending and descending vehicle supports 1A to 1C are once
Is lifted to the ascending limit, and then both or one of the laterally moving vehicle supports 2A and 2B is traversed so as to leave a space directly below the elevating vehicle support to be called, and the area directly below the elevating vehicle support to be called is free. If this is the case, the control means 43 performs a series of automatic driving operations in which the cord 13 is extended to lower the lifted vehicle support base to be called to the lower vehicle support level.
Is executed by

When the ascending and descending vehicle supports 1A to 1C are driven upward, when only the ascending limit detection sensor 28 is turned off as shown in FIG. If automatic stop braking of the motor 12 is not performed due to a failure of the counting function and the winding of the cable 13 is continued, the cable 13
Will further pull the rod 21 against the urging force of the spring 23, and as shown in FIG. 5D, the over-pull-in detection sensor 29 will also be switched to the off state. As described above, when both the ascending limit detection sensor 28 and the over-pulling detection sensor 29 are switched to the off state, FIG.
As shown in row 2 of the table, the control means 43 determines that there is an excessive retraction, and stops and brakes the motor 12 irrespective of the pulse count value.

The sensor 2 of the sensor unit 24
When the above-described overdrawing state occurs due to a failure of 7 to 29 or the like, the pulse count value exceeds the ascending limit range and enters the overdrawing range. If the pulse count value enters the overdrawing range as described above, FIG. As shown in the row 1 of the table, the control means 43 determines that there is an excessive retraction, and stops and brakes the motor 12 irrespective of the on / off state of the sensors 27 to 29 of the sensor unit 24.

As described above, when the ascending and descending vehicle supports 1A to 1C are in the process of ascending and descending, row 5 in the table of FIG.
As shown in the figure, the pulse count value falls within the range of ascending and descending, and all the sensors 27 to 29 of the sensor unit 24 should be in the ON state (see FIG. 5B). When the ascending and descending vehicle support bases 1A to 1C stop in the middle of ascending and descending due to a situation (for example, biting of foreign matter) that hinders the ascending and descending of 1C, the cable 13 winds while compressing the spring 23. As a result, as shown in row 4 of the table in FIG. 7, the pulse count value is in the range of ascending and descending, and the ascending limit detection sensor 28 switches to the OFF state. From this state, the control means 43 determines that the ascending / descending (elevating) is abnormal, and stops and brakes the motor 12.

Further, the cable-like body 13 is broken in a state in which the lifting vehicle support bases 1A to 1C are lifted up to the ascending limit position, and the lifting vehicle support which is not located directly above the laterally moving vehicle support bases 2A and 2B. When the table falls to the lower limit, as shown in row 6 of the table of FIG. The descent limit detection sensor 27 is turned off (see FIG. 5A), and the rope 13 is broken while the ascending and descending vehicle supports 1A to 1C are being moved up and down. When falls to the lower limit, as shown in row 7 of the table in FIG. 7, the lower limit detection sensor 27 is turned off (see FIG. 5A) even though the pulse count value is in the range of up and down. Control from these states Stage 43, such as it is determined that the rupture accident wick member 13, the motor 12 is stopped braking.

When an overweight vehicle is loaded on the ascending and descending vehicle supports 1A to 1C at the lower limit (lower vehicle support level D), the spring 23 is compressed even when the cable 13 is wound up. However, the lifting vehicle support at the lower limit position does not move in conjunction with it. In this case, as shown in row 8 of the table of FIG. 7, the ascending limit detection sensor 28 switches from the on state to the off state. Is set.
Accordingly, when a state occurs in which the ascending limit detection sensor 28 is switched to the off state but the pulse count value is within the descending limit stop range, the control means 43 determines that an overload is abnormal and stops and brakes the motor 12. In this case, if an overweight vehicle is retreated from the ascending / descending vehicle support bases 1A to 1C at the lower limit (lower vehicle support level D) as it is,
The control means 43 determines that an overload is abnormal and stops the motor 12 because it is extremely dangerous that the elevating vehicle support at the lower limit position jumps up due to the excessive tension acting on the cord 13. When the brake is applied, the motor 12 is automatically driven to rotate in the direction in which the cord 13 is extended until the descent limit detection sensor 27 is turned off, and the tension of the cord 13 is reduced to a desired state.

When the ascending and descending vehicle supports 1A to 1C are lowered to the lower limit, if the stop braking of the motor 12 is not performed normally due to a failure of the sensor unit 24 and the like, the extension of the cord 13 is continued. Row 10 of the table of FIG.
As shown in (1), the pulse count value exceeds the descending stop range and enters the over-extending range. The control means 43 determines from this state that the overextending abnormality is abnormal regardless of the on / off state of each of the sensors 27 to 29 of the sensor unit 24, and
2 is stopped and braked.

It should be noted that in the event of an abnormality other than the normal stop braking of the motor 12 due to the arrival of the ascending or descending vehicle support bases 1A to 1C, the operator is notified of the abnormality by a lamp or a buzzer on the operation panel 41. At the same time, it is desirable to display the details of the abnormality on a display.

In the above embodiment, the detecting means for directly or indirectly detecting the rotation amount of the winding drum 10 of the cord 13, that is, a pulse transmitter (such as a rotary encoder) 18 linked to the winding drum 10. I used
It is also possible to use a detecting means for directly or indirectly detecting the rotation time of the winding drum 10.

That is, a clock pulse oscillator incorporated in a microcomputer or a programmable sequencer or the like used as the control means 43 or a dedicated clock pulse oscillator, and the elapsed time of a specific period is detected by using the oscillation clock pulse. Using the timing means, the descent time required for the ascending and descending vehicle supports 1A to 1C to descend from the ascending limit position to the ascending limit position, and the ascending and descending vehicle supporters 1A to 1C ascending from the ascending limit position to the ascending limit position. The rise time required for the measurement is measured, and a time range corresponding to the ascending limit stop range and the ascending limit stop range in the table of FIG. Is the same as the fall time range and the rise time range), and based on these set time ranges,
A time range corresponding to each of the up-and-down range, the over-drawing range, and the over-extending range in the table of FIG. 7 is set, and the rotation of the winding drum 10 during the actual operation (the motor 1 is started).
2) from the comparison result of the time required from the turning on of the winding drum 10 to the stop of the winding drum 10 (the turning off of the power of the motor 12) with each of the set time ranges and the on / off state of each of the sensors 27 to 29 of the sensor unit 24. It is possible to determine whether the motor 12 is normal or abnormal and perform the stop / brake control of the motor 12 based on the determination as described in the above embodiment.

As described above, the rotation time of the winding drum 10 is directly or indirectly detected, and based on the detection result and the on / off state of each of the sensors 27 to 29, the ascending / descending control of the ascending / descending vehicle support bases 1A to 1C is performed. However, since the ascending / descending stroke of the ascending / descending vehicle support bases 1A to 1C is as short as about 2 m, the winding drum 10 is more controlled than when the control is performed based on the rotation amount of the winding drum 10 as in the previous embodiment. Cord 13
Is not affected by the change in peripheral speed when it is multi-layer wound,
A relatively high-precision control is possible by making use of the characteristics of a clock pulse oscillator in which the time interval between oscillation pulses is extremely short as compared with a rotary encoder.

In the case of the parking facility in which the elevator support 1A to 1C ascends and descends between the lower vehicle support level D on the first floor and the upper vehicle support level U on the second floor as in the above embodiment, The laterally movable vehicle supports 2A, 2B disposed at the lower vehicle support level D on the first floor above the ground are not essential. For example, when each of the elevating vehicle supports 1A to 1C is at the upper vehicle support level U, the vehicle is stored directly on the lower vehicle support level D (on the floor) immediately below the elevating vehicle supports 1A to 1C. When a vehicle is inserted into or removed from the elevating vehicle support bases 1A to 1C, the vehicle stored at the lower vehicle support level D (on the floor surface) is retreated, and then the elevating vehicle supporting the vehicle directly above and below it is supported. The tables 1A to 1C may be lowered to the lower vehicle support level D (on the floor). However, in this case, as means for selectively switching the ascending and descending vehicle supports 1A to 1C to a state capable of ascending and descending, the ascending and descending vehicle supports 1A to 1C are used.
It is necessary to provide a descent prevention means (lock means) for making C incapable of being lowered individually at the upper vehicle support level U.

Further, the elevator vehicle support bases 1A to 1C are placed underground 1
It can also be implemented as a parking facility that moves up and down between a lower vehicle support level D on the floor and an upper vehicle support level U on the first floor. In this case, as means for selectively switching each of the ascending and descending vehicle supports 1A to 1C to a state capable of ascending and descending, a laterally moving vehicle support 2 disposed at an upper vehicle support level U on the first floor above the ground is used.
A and 2B can be used. For example, in the above-described embodiment, a gate frame for ascending prohibition similar to the gate-shaped vehicle support base receiving frame 35 disposed on the laterally moving vehicle support bases 2A and 2B projects onto each of the elevating vehicle support bases 1A to 1C. The ascending and descending vehicle supports 1A to 1C, on which the laterally movable vehicle supports 2A and 2B are located right above, are brought into contact with the gate frame for ascending prohibition and the upper and lower laterally movable vehicle supports 2A and 2B. It can be configured such that the rise is prevented. Of course, also in this case, without using the laterally-moving vehicle supports 2A and 2B, ascent-preventing means (locking means) for making the ascending and descending vehicle supports 1A to 1C incapable of ascending individually at the lower vehicle support level D. It can also be attached. Furthermore, by combining the above-described configuration with the configuration of the above-described embodiment, the present invention can also be implemented as a three-level multi-story parking facility having a first basement floor and a second floor above ground.

Although a wire rope is used as the rope 13 for driving the lifting and lowering vehicle supports 1A to 1C, a chain can be used. When the chain is used, as in the above embodiment, the guide wheels 16a to 16c, 17a to 17c for suspension on the fixed frame 4 side and the guide wheels for suspension 15a to 15c on the side of the lift vehicle support bases 1A to 1C are used. Since it is impossible to hang the chain in the same direction, at least two guide gear wheels are provided on the fixed frame 4 side for each of the elevating vehicle supports 1A to 1C in the parallel direction of the elevating vehicle support. Then, each of the elevating vehicle supports 1A to 1C can be hung so as to hang the chain in a zigzag shape. Further, in this case, a motor driven tooth wheel is used as the chain pull-in / pull-out means, and the drive tooth wheel and the chain free end (the end opposite to the side on which the elevating vehicle supports 1A to 1C are suspended) are connected. Between them, a counterweight mechanism or the like for applying a constant tension to the chain may be provided.
As a means for pulling in and pulling out the cord-like body (wire rope or chain) 13, instead of the winding drum 10 and the driving tooth wheel, an intermediate detour path portion of the cord-like body 13 is provided by an idle guide wheel reciprocally driven in a straight path. It is also possible to use a mechanism that changes the length of the. In this case, the movement amount or the movement time of the idle guide wheel reciprocally driven on the straight path may be directly or indirectly detected.

[0047]

As described above, according to the structure of the present invention, a plurality of vertically movable vehicle supports which can be moved up and down between the lower vehicle support level and the upper vehicle support level are provided.
Since a single pull-in / pull-out means can be selectively driven up and down by one system of cords driven by pull-in / pull-out means, a conventional lifting / lowering drive means is provided for each lifting vehicle support base. Compared to the parking device of
Although it is possible to significantly reduce the cost of the entire device, regarding the lift stop control of the plurality of lift vehicle supports, sensors necessary for detecting the arrival of the lift limit of each lift vehicle support, the sensor described above It is only necessary to attach them to the fixed frame side end of one cable-like body, and the number of sensors is greatly reduced as compared with the case where it is necessary to attach them together for each elevating path of each elevating vehicle support. However, the cost of the entire apparatus can be significantly reduced.

In addition, the ascending / descending position of each ascending / descending vehicle support base is not determined only by the detection information of the sensors attached to the fixed frame side end of the one-line cord-like body. Based on the detection value of the detection means for directly or indirectly detecting the operation amount or operation time of the one-line cord-like body pulling-in / out means, and a set value which is compared with the detection value of the detection means, Since the lifting / lowering stop control is performed by judging the lifting / lowering position of the lifting / lowering vehicle support base, as shown in the embodiment, it is possible to perform safe and highly accurate lifting / lowering control.

According to the second aspect of the present invention, the operation amount of the pull-in / pull-out means, that is, the operation amount of the pull-in / pull-out means, is utilized by using a pulse transmitter (such as a rotary encoder) interlocking with the pull-in / pull-out means of the cord-like body. The amount of pulling-in / drawing-out of the cord-like body is reliably captured digitally, and based on this, the elevation control of the present invention can be easily and reliably performed.

According to the configuration of the third aspect, a general microcomputer or a programmable sequencer used as a control means is built in without a special pulse transmitter (such as a rotary encoder). By utilizing a clock pulse oscillator or the like, highly accurate lifting and lowering control is possible, and cost can be reduced.

According to the fourth aspect of the present invention, not only can the ascent / descent detection sensor detect that the ascending / descending vehicle support has reached the ascent / descent limit, but also the ascending / descending vehicle support can reach the ascending / decreasing limit. An over-drawing abnormality caused by the drawing-in / feeding-out means after the reaching can be reliably detected by the over-drawing detection sensor. In this case, according to the configuration of the fifth aspect, even if the detection means (pulse transmitter, clock pulse oscillator, etc.) breaks down, the over-drawing abnormality can be reliably detected and dealt with, thereby improving the safety. be able to.

Further, according to the structure of the sixth aspect,
From the detection information of the detecting means (pulse transmitter, clock pulse oscillator, etc.), not only can it be determined that the lifting vehicle support has reached the lower limit, but also the lifting vehicle support has reached the lower limit. Despite this, it is possible to reliably detect an over-extension error in which the extension of the cord is continued, or an over-drawing abnormality in which the extension of the cord is continued even though the lifting / lowering vehicle support has reached the upper limit. be able to. In addition, since it is possible to determine that the ascending and descending vehicle support is in the middle of ascending and descending, it is also possible to reliably determine, based on this detection information and the information detected by the sensor, that the ascending and descending vehicle support is stopped due to foreign matter being caught in the ascending or descending direction. Therefore, the security can be further improved.

Further, in this case, according to the configuration of the seventh aspect, even if the sensor fails, it is possible to reliably detect and cope with an overextending abnormality or an overdrawing abnormality of the cord-like body, thereby further improving safety. Can be increased.

[Brief description of the drawings]

FIG. 1 is a front view showing the entire apparatus in a state where one elevating vehicle support is lowered to a lower vehicle support level.

FIG. 2 is a partially cutaway side view of the device.

FIG. 3 is a schematic perspective view showing elevating drive means of each elevating vehicle support.

FIG. 4 is a partially longitudinal side view showing a spring unit and a sensor unit attached to one end of a lifting drive cord.

FIGS. 5A to 5D are schematic side views showing each detection state of the sensor unit.

FIG. 6 is a block diagram illustrating a configuration of a control device.

FIG. 7 is a table illustrating control contents.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A-1C Elevating vehicle support 2A, 2B Side-moving vehicle support 3 Elevating drive means 4 Fixed frame 10 Winding drum 12 Brake motor with reduction gear 13 Cables (wire ropes and chains) 14 Spring units 15a-15c Suspended Lower guide wheel 16a-16c Hanging guide wheel 17a-17c Hanging guide wheel 23 Compression coil spring 24 Sensor unit 25 Detected member 27 Lower limit detection sensor 28 Upper limit detection sensor 29 Excessive pull-in detection sensor 35 Vehicle support base Receiving frame 40 Motor controller 41 Operation panel 42 I / O interface 43 Control means

Claims (7)

[Claims] 1. A vertically movable vehicle support table which can be moved up and down between a lower vehicle support level and an upper vehicle support level, and which can selectively lift and lower these lift vehicle support tables. Means for switching to a state, one end of which is locked to the fixed frame, and the other end of which is operated by the retracting and extending means, and the intermediate portion is hung on a suspended guide wheel pivotally supported by each lifting vehicle support base. A lifting and lowering control device for a parking device, comprising a rope that suspends the plurality of lifting vehicle supports, wherein a spring is interposed between one end of the rope and a fixed frame, A sensor for detecting a change in the position of one end of the cord according to a change in the tension acting on the cord, a detecting means for directly or indirectly detecting an operation amount or an operation time of the retracting / pulling-out means, and a control means When The control unit is provided, and the control unit is configured to detect the one end position of the cord-like body of the sensor, the detection value of the detection unit, and the set value compared with the detection value of the detection unit. A lift control device for a parking device, which performs lift stop control of a lifting vehicle support base that is selectively driven up and down. 2. The lift control device for a parking device according to claim 1, wherein said detection means uses a count value of a pulse transmitted from a pulse transmitter linked to said pull-in / payout means as a detection value. 3. The elevation control device for a parking device according to claim 1, wherein said detection means uses a measured value of an operation time of said pull-in / feed-out means as a detection value. 4. A descent limit detection sensor for detecting a movement of one end of a cord-like body in a feeding direction by a spring after the elevating vehicle support has reached a descent limit, and a descent limit vehicle support as the sensor. An ascending limit detection sensor that detects a certain distance of movement of one end of the cord in the retraction direction against the spring after the ascending limit is reached, and a withdrawal resisting the spring beyond a position detected by the ascending limit detecting sensor. The lift control device for a parking device according to any one of claims 1 to 3, further comprising an overdrawing detection sensor that detects a movement of one end of the cord-like body in a predetermined direction in a direction. 5. When the overdrawing detection sensor is activated,
The elevation control device for a parking device according to claim 4, wherein the elevation stop control of the elevation vehicle support base is performed irrespective of the detection value of the detection means. 6. A set value to be compared with a detection value of said detecting means, a lower limit stop range value of a lift vehicle support base, a halfway range value of a lift vehicle support base, a limit stop range of a lift vehicle support base. The parking device according to any one of claims 1 to 4, wherein a value, an overextending range value exceeding the descending stop range value, and an overdrawing range value exceeding the ascending stop range value are set. Lift control device. 7. When the detection value of said detection means becomes said over-extending range value or said over-drawing range value, irrespective of the detection state of said sensor, lifting / lowering stop control of the lifting / lowering vehicle support base is performed. A lift control device for a parking device according to claim 6.