JPH06272415A - Elevation control method for mechanical parking device - Google Patents

Abstract

PURPOSE:To control the elevation of an elevating pallet safely by detecting a failure of a mechanical brake of a mechanical parking device. CONSTITUTION:In a method for controlling the elevation of a mechanical parking device provided with an elevating pallet 2 to be loaded with a vehicle W and to be elevated, when a brake failure detecting means 22 detets a failure of a mechanical brake 15, an elevating pallet position control unit 21 controls the elevating operation of a driving motor 11 through an inverter 24. Then, the elevating pallet 2 is driven at a low speed in the moving direction due to the failure of the brake, and the elevating pallet 2 is moved to the rising end or the lowering end 1b of an elevator shaft 1a and landed forcedly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift control method in a mechanical parking apparatus for driving a lift to move up and down to store a vehicle placed on the lift at a predetermined position.

[0002]

2. Description of the Related Art FIG. 3 shows a mechanical parking apparatus which is the background art of the present invention. The mechanical parking facility shown in the same figure is a so-called elevator parking device, and a hoistway 1a is formed in the center of a parking structure 1 that supports the parking device. An elevating table 2 on which a vehicle is placed is provided so as to be able to ascend and descend, and a plurality of parking shelves 3L and 3R for parking the vehicle are provided on both left and right sides of the hoistway 1a.

On the parking shelves 3L and 3R, pallets 16 for vehicle mounting, which will be described later (see FIG. 6, not shown in FIG. 3 for simplification), are mounted, and the pallets are mounted on the vehicle. It is stored in the parking shelves 3L and 3R while being placed on 16. An entrance / exit 9 is provided on the first floor above the ground for vehicle entry.

FIG. 4 is a block diagram showing the configuration of a conventional elevator control device in an elevator type parking device.

As shown in the figure, the lifting table 2 has a rectangular shape, and the four corners thereof are respectively wire ropes 4a, 4b, 4c, 4.
It is suspended by d. These four wire ropes 4a, 4b, 4c and 4d are respectively used for the parking structure 1
Baffles 5a, 5b, 5c, 5d provided on the ceiling of the
Via the vehicle, the vehicle is collected at one location toward the drive vehicle 8, is further drawn downward, and is connected to the balance weight 10.

The drive wheel 8 has a drive shaft 11 of a drive motor 11.
It is connected to a and is driven to rotate in both forward and reverse directions, so that the lifting platform 2 is driven to move up and down.

The elevating control device 12 receives the necessary instruction from the operation panel 13 and controls the drive of the drive motor 11.
The lifting control device 12 includes a drive shaft 11 of the drive motor 11.
The pulse input from the encoder 14 which is the position detecting means attached to a is counted and stored, whereby the drive control is performed while always grasping the position of the lift table 2.

Further, the encoder 14 is usually formed so as to output pulse signals having different phases of the A phase and the B phase, and the drive shaft 1 is obtained by obtaining the phase difference between the two phases.
The rotation direction of 1a can be recognized.

A mechanical brake 15 is connected to the drive shaft 11a of the drive motor 11 so as to control and release the rotation of the drive shaft 11a in response to an instruction from the lift control device 12, and the lift base 2 When moving up and down and counting the pulse signals from the encoder 14, and when the target position is detected, the power supply to the drive motor 11 is turned off, and the mechanical brake 15 is activated to move the lifting platform 2 to the parking rack 3R. , 3
It is stopped and held at a predetermined position of L.

The mechanical brake 15 is, for example, an electromagnet type brake, and is adapted to operate when the supply of electric power is turned off. FIG. 5 shows an example of the structure of the mechanical brake 15. The brake main body 151 has brake shoe holding members 152, 153 for holding the brake shoes 152a, 153a and a shaft 152.
It is pivotably supported around b and 153b. The upper part of each brake shoe holding member 152, 153 has a connecting rod 15
4 and are urged by compression springs 155 in directions approaching each other (arrow A), and the brake shoes 152a, 153a are fitted to the drive shaft 11a of the drive motor 11 and the peripheral side surface of the drum 156. Is sandwiched from both sides to prevent the drive shaft 11a from rotating. Reference numeral 157 denotes an electromagnet device, which draws the brake shoe holding member 153 in the arrow B direction by energizing the drum 156, so that the drum 156 is brake shoe-152a, 153a.
The brake operation is released by releasing the pressing and pinching by.

Further, the vehicle is mounted on the lift table 2 via a pallet 16 as shown in FIG. The pallet 16 has wheels 16a at the bottom so as to be movable in the left-right direction, and the vehicle is transferred to the parking shelves 3R, 3L on the intended floor while being placed on the pallet 16 and stored. To be done.

In the parking facility having such a structure, for example, when the user stores his / her own vehicle, first, the operation panel 13 is operated to perform the storage operation. By this warehousing operation, the elevating control device 12 searches for an empty parking rack and calls the pallet 16 placed on the empty parking rack.

The elevating table 2 moves to the floor of the empty parking rack, and the upper surface of the elevating table 2 is made to coincide with the floor surface of the empty parking rack and stopped. Then, the horizontal drive means (not shown) provided in the parking shelf 3a or the elevator 2 moves the pallet 16 of the empty parking shelf in the direction of the elevator 2 and places it. The lift 2
The pallet 16 is firmly gripped by a lock mechanism (not shown), and the pallet 16 is lowered to the vehicle loading / unloading port 9 and stopped.

A user puts his or her own vehicle into the pallet 1
When it is placed on the vehicle 6 and gets out of the vehicle, the lifting platform 2 rises and stops at the position of the empty parking rack, and the vehicle is moved horizontally along with the pallet 16 in the parking rack direction by the horizontal drive means. Store in parking shelves.

[0015]

In the lifting control method as described above, the mechanical brake 15 is always operated to securely hold the pallet 16 when the lifting platform 2 is stopped.
The safety is maintained by horizontally moving the vehicle and entering the vehicle. However, at the stop position, the drive motor 11 is de-energized and its rotational torque is lost, so in the unlikely event that the mechanical brake 16 fails,
The lift 2 is in the direction in which the load is applied, that is, the lift 2
(Including the case where the vehicle is placed) and the balance weight 10 falls or rises while being accelerated in the direction of heavier weight, and the descending end 1b or the ascending end 1 of the hoistway 1a.
A situation occurs in which it collides with c. As a result, not only the lifting table 2 is damaged, but when the vehicle is placed on the lifting table 2, the vehicle is seriously damaged, leading to a serious accident.

Therefore, conventionally, the same mechanical brake as the mechanical brake 15 is installed as an auxiliary brake to form a double brake structure, and the auxiliary brake is operated in an emergency.

However, in such a lifting control method, since the mechanical brake 15 must be additionally provided and two brake control systems must be provided for control, the structure becomes complicated. In addition to the high cost, if the auxiliary brake should fail, it will be irreversible.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a lifting control method for a mechanical parking device which has a simple structure and can ensure safety even if a mechanical brake fails. And

[0019]

In order to achieve the above-mentioned object, a method of controlling elevation of a mechanical parking device according to the present invention comprises:
An elevating table that mounts a vehicle and moves up and down in a hoistway, an elevating driving means that elevates and drives the elevating table, a braking device that holds the elevating table at a predetermined height, the elevating driving device and the braking device. And a control device for controlling the operation of the brake system, wherein the control device further comprises a brake failure detection means for detecting a failure of the brake means, and the brake failure detection method is also provided. When a failure of the brake is detected by means, the elevating drive means is controlled to drive the elevating table at a low speed in a direction in which the elevating table tries to move due to the failure of the brake, and the elevating table is raised in the hoistway. It is designed so that it can be moved to the end or the descending end.

[0020]

When the brake failure detecting means detects a failure of the brake means, the control device drives and controls the elevating and lowering driving means, and the elevating table is driven at a low speed in a direction in which the elevating table is about to move due to the failure of the brake, and the elevating and lowering means is operated. Move the platform to the ascending or descending end of the hoistway.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described in detail with reference to the drawings, but the technical scope of the present invention is not limited thereto.

FIG. 1 is a block diagram showing the construction of a lifting control device for carrying out the lifting control method for a mechanical parking device according to the present invention. In the figure, the components denoted by the same reference numerals as those in FIG.

An elevating control device 20 for controlling the elevating operation of the elevating table 2 includes an elevating table position managing section 21 and an inverter 24 for driving and controlling the drive motor 11 in response to an instruction from the elevating table position managing section 21. And a brake failure detection device 22 that detects a failure of the mechanical brake 15 based on a pulse signal from the encoder 14 and a position storage unit 23 that stores the position of the lift 2.

When a loading / unloading operation is performed from the operation panel 13, the elevator table position management unit 21 moves the elevator table 2 to a target position based on the position information of the elevator table 2 stored in the position storage unit 23. For the drive motor 1 via the inverter 24 while counting the pulse signal from the encoder 14 while supplying the electric power to the mechanical brake 15 to release the braking operation, and the moving direction for
1 is controlled. When the pulse signal from the encoder 14 reaches a predetermined count, the drive motor 11 is stopped, the power supply to the mechanical brake 15 is stopped, the brake is operated, and the lifting platform 2 is stopped and held at a target position. . At this stop position, the pallet 16 is moved by the horizontal driving means, and the vehicle W is stored or unloaded. The stop position is the position storage unit 2
It is stored in No. 3 and is used for the subsequent lifting control.

The pulse signal from the encoder 14 and the control signal from the lift position management unit 21 are also sent to the brake failure detection device 22, and the operation for detecting the failure of the mechanical brake 15 by the brake failure detection device 22. The subsequent lifting operation of the lifting platform 1 will be described with reference to the flowchart of FIG.

When the elevator table 2 is moved up and down to a predetermined position, the elevator table position management section 21 instructs the inverter 24 to stop the drive motor 11 and also to stop the energization of the mechanical brake 15 to brake. Operate. This stop signal is also sent to the brake failure detection device 22, and when the brake failure detection device 22 receives the stop signal (step S1), the input of the pulse signal from the encoder 14 is checked (step S2). That is, when the mechanical brake 15 has no failure and its operation is good,
Since the rotation of the drive shaft 11a is reliably regulated when stopped,
The input of the pulse signal from the encoder 14 becomes "0", but if the mechanical brake 15 is out of order and the regulation effect thereof is low, the lifting platform 2 is used as the balance weight 10 and the lifting platform. Either of 2 drops or rises in the direction of the larger load. For this reason, a pulse signal of the encoder 14 is generated and sent to the brake failure detection device 22. Accordingly, the brake failure detection device 22 determines that the mechanical brake 15 has a failure, and sends a signal to that effect to the elevator board position management unit 21. The elevator position management section 21 receives the signal and receives the pulse signal A from the encoder 14.
The phase difference between the phase B and the phase B is calculated, and this detects the rotational direction of the drive shaft 11a, that is, whether the lifting platform 2 is going down or going up (step S
3) If it is going to descend, the inverter 24
Instruct the elevator table 2 to descend at a low speed. When a predetermined electric power is supplied to the drive motor 11 from the inverter 24, a rotational torque is generated in the drive motor 11 to lower the elevator table 2 at a low speed and stop when the elevator shaft 2 reaches the descending end 1b. (Steps S4 and S5), the operation ends.
When it is detected in step S3 that the lift table 2 is starting to move up, the inverter 24 is moved to the lift table 2.
To ascend at a low speed, and the hoistway 2 moves to the ascending end 1c.
When it arrives at (steps S6 and S7), the operation ends.

An alarm device is attached to the lifting control device 20 so that the brake failure detection device 22 operates as the mechanical brake 1.
If an alarm is sounded when the failure of No. 5 is detected, a staff member can come immediately to repair the mechanical brake 15.

According to the above configuration, the failure of the mechanical brake 15 can be reliably detected, and when the failure is detected, the mechanical brake 15 is moved at a low speed in the direction in which the load is large, and the hoistway is moved. Since the upper and lower terminal portions are, so to speak, temporarily attached, there is no possibility that the lift table 2 will drop or rise and a collision accident will occur.

The mechanical parking device to which the present invention is applied is
The invention is not limited to the elevator type parking device as in the above embodiment, but any mechanical parking device may be used as long as it lifts and lowers the elevating table with a rope or the like.

[0030]

As described above, according to the present invention, when the brake failure detecting means detects the failure of the braking means, the control device receives the signal to control the operation of the lifting drive means, and the lifting platform loads the load. In response to this, the vehicle is driven at a low speed in the direction in which it is about to move, and the elevator is moved to the ascending end or descending end of the hoistway to be accidentally landed. There is no possibility of occurrence, and the safety of the mechanical parking device can be easily and reliably ensured by a simple one-system braking means.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a control device for carrying out a lifting control method for a mechanical parking device according to the present invention.

FIG. 2 is a flowchart showing a brake failure detection operation and a subsequent lifting operation in the control device in FIG.

FIG. 3 is a diagram showing a configuration of an elevator type parking apparatus which is a background art of the present invention.

FIG. 4 is a block diagram showing a control device for a conventional elevator type parking device.

FIG. 5 is a diagram showing an example of a mechanical brake in an elevator parking device.

FIG. 6 is a perspective view showing the appearance of a pallet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Parking structure 2 Lifting platform 3L, 3R Parking rack 11 Drive motor 11a Drive shaft 13 Operation panel 14 Encoder 15 Mechanical brake 16 Pallet 20 Lifting control device 21 Lifting platform position management unit 22 Brake failure detection device 23 Position storage unit 24 Inverter

Claims (1)

[Claims] 1. An elevating table for mounting and elevating a vehicle in a hoistway, an elevating driving means for elevating and lowering the elevating table, a braking means for holding the elevating table at a predetermined height, and the elevating and lowering drive. And a control device for controlling the operation of the braking device, wherein the control device further comprises a brake failure detecting device for detecting a failure of the braking device. When the brake failure detection means detects a failure of the brake, the lifting drive means is controlled to drive the lifting table at a low speed in a direction in which the lifting table is about to move due to the failure of the brake. A lifting control method in a mechanical parking device, wherein the lifting control is performed so as to move to a rising end or a falling end of the hoistway.