JPH0197761A - Drive device for multilevel parking equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a drive device for a multilevel parking facility using an electric motor as a power source.

(Prior art and its problems) The applicant of the present invention previously invented a multi-level parking facility that operates by driving an electric motor under inverter control (Japanese Patent Application No. 61/2891).
No. 94, 61-28ri No. 195, 62-03049
No. 3) is proposed. In this way, by incorporating inverter control into the operation of the multi-story parking facility, it is possible to control the operating speed according to the load situation and improve the operating efficiency.

By the way, when selecting the motor and inverter used for the above-mentioned inverter control, the capacity of the motor and inverter becomes extremely large if you try to handle the maximum load, and overcurrent resistance becomes a problem, especially for the inverter. There was a problem in that the cost would increase significantly if an attempt was made to cover it.

(Purpose of the Invention) This invention was made to solve the above-mentioned problems, and is capable of operation by inverter control in the normal load range except for maximum overload, which has a low probability of occurring. It is an object of the present invention to provide a drive device for a multilevel parking facility that can keep the capacity of an inverter small.

(Means for Achieving the Object) In order to achieve the above object, the drive device for a multi-story parking facility of the present invention has a main motor as a normal power source driven by inverter control, and a main motor as a power source for normal use when overloaded. A high-torque auxiliary motor is provided as a backup power source to replace the am, and a small-capacity main motor and inverter can be selected that can handle inverter control during normal times when the head direction is relatively low. In addition, in the event of an overload that exceeds the inverter's capacity, which occurs with rare probability, the system is configured to perform backup operation using a high-torque auxiliary motor.

(Embodiment) FIG. 2 is a structural explanatory diagram showing a vertical circulation movable multi-story parking facility 1 to which a drive device according to an embodiment of the present invention is applied. In this garrison facility 1, an endless chain 5 is stretched between the F section sprocket 3 and the lower sprocket 4, which are arranged one pair each in the upper and lower directions in the front and rear, in the building 2, and a large number of chains are attached to the endless chain 5 at equal pitches. A cage 7 for mounting a vehicle W is pivotally suspended on each of the tips of the attachment plate 6 of the vehicle W, and the group of cages 7 is circulated and moved by a drive 5ifi8 provided in relation to the upper sprocket 3, and one of the cages 7 is attached to the building 2. The cage 7 is designed to be able to enter and exit the cage by calling the above-ground entry/exit port 2a provided on the lower wall. Reference numeral 9 denotes a row encoder attached to the lower sprocket 4, which is used to detect the amount of movement of the endless chain 5 and to detect the position of the slide.

FIG. 1 is a block diagram showing one embodiment of a drive device 8 according to the present invention. In the figure, 10 is a main induction motor for normal operation, and is electrically connected to an inverter control panel 11 that includes an inverter and an inverter control section for controlling the drive of the main induction motor. And this main complaint is conductivity! 11
! The drive shaft of 1!10 is connected to the input shaft of the reducer 12,
The output shaft of the reduction gear 1112 is connected to the above-mentioned upper sprocket 3, so that the rotation of the drive shaft of the main induction motor 10 is reduced by t.
1112 so that the deceleration is transmitted to the upper sprocket 3. 13 is the Lord! ? Conductive! l1lJ
This is a holding brake for controlling the drive shaft of the Il 110, and is configured to brake the circular movement of the group of cages 7 and stop it at a desired location. In addition, the rear end of the drive shaft of the main induction motor 10 is connected to the rear end of the drive shaft via a coupling 14. It is connected to the drive shaft of the electric '0Ia15. The auxiliary induction motor 15 is a multi-pole motor having several times the number of poles as the main induction motor 10, and is electrically connected to an adverb a board 16 that controls its drive.

This sub-control panel 16 and the above-mentioned inverter control panel 11 are connected to the main control 1818 via a changeover switch 17.
Based on the inverter down and overdirection information provided from the inverter control a811 to the main control 11118, the on state of the changeover switch 17 is configured to be switched from the inverter control aai1 side to the sub control panel 16 side.

Next, the operation of this drive device M8 will be explained with reference to the flowchart shown in FIG. In the initial state, the changeover switch 17 is inverter control! 811 side, and first select the desired cage 7 from the group of 7 cages shown in FIG.

Confirmation is made on the main control panel 18 whether an input for calling the storage entrance 2a, that is, a call n record has been made (step S1). When it is confirmed that there is a call registration, the drive device 8 starts (step $2), and the main key WJ5J
118 to the main induction motor 1 via the inverter control panel 11
0 is supplied with power, and this starts calling the car 7. After starting the drive device 8, based on the information given to the main control panel 18 from the inverter control I control panel 11, whether there is any problem with the inverter (step S3
), whether the load exceeds the inverter's capacity (
Confirmation in step S4) is performed. When it is confirmed that there is no problem with the inverter and that the load is within the inverter's capacity, the selector switch 17 switches to inverter control! It is maintained in the initial set state where it is turned on to the 111 side (step S5).
, after that, cage 1 was operated under high-speed operation under inverter control.
is called (step S6).

In other words, in this inverter-controlled operation, the inverter converts the commercial power supply into low-voltage, low-frequency AC power depending on the load size depending on the left and right imbalance of the connecting ring made up of 7 groups of cages. By converting to AC power, the rotational speed of the main conductor AL110 decreases and the torque increases, while when the load is small, the inverter converts the commercial power supply to high voltage, high frequency AC power, which increases the rotational speed of the main induction machine 111110. The operating speed is controlled by increasing the torque and decreasing the torque.

Then, when it is detected by the output of the rotary encoder 9 that the desired cage 7 approaches the loading/unloading port 2a, the deceleration control from the inverter control panel 11 is activated to reduce the operating speed (step S7). When reaching 2as, the operation is stopped and the machine is held with the holding brake 13 (
Step S8).

On the other hand, if it is confirmed in steps S and S4 that there is a problem with the inverter or that the inverter is overloaded beyond its capacity, the changeover switch 17 switches the inverter control panel 11
This disconnects the inverter from the power supply (step 5-0), and an abnormality alarm is activated.
8 (step S1°). After this, the changeover switch 17 is turned on to the sub$1JIj116 side (step 511), and as a result, the main control 11
Electric power is supplied from 8 to the electric conduction motor 15 via the sub-control panel 16. As mentioned earlier, the a l conductive power Fa15
Since the motor is a multi-pole motor having several times the number of poles as the main induction motor 1110, it has a low speed of a fraction of the main induction motor 10, but has a torque several times as high as that of the main induction motor 10. Therefore, from now on, the car 7 will be called by high-torque, low-speed operation using the conduction motor 15 as the drive source (step 512). Then, when the desired cage 7 reaches the entrance/exit port 2a, the operation is stopped (step S8).

In this way, when an overload exceeds the inverter's capacity,
Instead of the operation of the main induction motor 1ff110 under inverter control, the DI induction motor 15 backs up the operation and operates at low speed but with high torque. Therefore, the main induction motor Il! 10 and the inverter capacity should be selected to be relatively small enough to withstand a load that is likely to occur regularly, and this old rule will be sufficient for most cases. Furthermore, even in the rare event of an overload or a problem with the inverter, this can be handled by operation using the n1 induction motor 15, so the multi-level parking facility 1 will not come to a complete stop.

In this embodiment, the drive shaft of the conductive motor 15 is the main induction motor 1! Although the case is shown in which the coupling 14 is connected to the drive shaft of the motor 10, the induction motor 1 is limited to this.
5 is connected to the main induction motor 10 via a clutch, and in the case of operation under inverter control, the f11 induction motor 1
5 may be configured to be separated from the main guidance 1!13 aircraft 10.

Also ii1 induction electric I! 115 is not limited to multi-pole motors, but also pole converters with constant horsepower characteristics, geared motors,
A cyclo reducer with a motor or the like may be used.

(Effects of the Invention) As described above, according to the drive device for a multilevel parking facility of the present invention, in addition to the main motor as a normal power source driven by inverter control, the main motor is used in place of the main motor during overload. High torque I as a driven backup power source
Since it is equipped with a II motor, it is possible to select a small-capacity main electric motor and inverter that can withstand inverter control during normal times when the load is relatively low, which reduces costs and also prevents overload. In the event of an emergency such as when the inverter is down, the S1 heavy electric machine can be operated, thereby avoiding a situation where the equipment completely stops, and improving reliability.

[Brief explanation of the drawing]

Figure 1 shows the drive 1 of a multilevel parking facility which is an embodiment of the present invention.
FIG. 2 is a vertical sectional view of a multilevel parking facility to which the drive device is applied, and FIG. 3 is a flow diagram showing the operation of the drive device. 1... Multilevel parking facility, 10... Main induction motor, 11... Inverter control panel, 15... m electric motor,
17... Changeover switch agent, patent attorney Shigeaki Furuta

Claims (1)

[Claims] (1) A multi-story parking facility equipped with a main motor as a normal power source driven by inverter control and a high-torque auxiliary motor as a backup power source that is driven in place of the main motor during overload. drive unit.