JP2023100456A - Driving method and driving device for motor and brake - Google Patents

Abstract

To prevent damage to an emergency power supply when a motor and a brake are driven by an emergency power supply while suppressing costs.SOLUTION: In a driving method of a motor 40 and a brake 42 by using a commercial power supply 32 in normal times and an emergency power supply 34 in a power failure as a driving power supply 30, the driving power supply 30 and the motor 40 are connected through a first switch 12, and the driving power supply 30 and the brake 42 are connected through a second switch 14. When the driving power supply 30 is the emergency power supply 34, the first switch 12 and the second switch 14 are separately controlled to raise an object by driving the motor 40 with the brake 42 released, and to lower the object by driving the motor 40 with the brake 42 actuated. As a result, since the motor 40 does not enter a power regeneration state, damage to the emergency power supply 34 can be prevented while suppressing costs without requiring a braking resistor or the like.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a motor and brake drive method and drive device used to raise and lower an object in a multistory parking system.

For example, in a multi-storey parking system 70 as shown in FIG. 4, objects such as pallets 72 (72a to 72i) for accommodating vehicles and opening/closing gates 76 (76a to 76c) at height positions for entering and leaving vehicles A plurality of motors and brakes are installed to raise and lower the . These motors and brakes are normally driven by power from the commercial power supply. However, in order to meet the needs of users who want to leave the vehicle even during power outages, there are multilevel parking systems equipped with emergency power sources for driving motors and brakes during power outages. Note that Patent Document 1 discloses a parking device equipped with an emergency power supply for supplying power to an information processing device, a communication device, and the like in the event of a power failure.

JP 2013-074781 A

Here, referring to the case where the parking structure 70 of FIG. 4 is equipped with an emergency power supply as described above, for example, the motor and brake for lifting and lowering the pallet 72 receive power from the emergency power supply during a power outage. At this time, when the pallet 72 is lowered, it is lowered by the weight of the pallet 72 and the weight of the vehicle, and if the motor enters the power regeneration state, there is a possibility that the power generated by the motor may damage the emergency power supply. In order to avoid this, it is conceivable to prevent the regenerated power from flowing to the emergency power supply by using inverter control, braking resistors, etc., but this will greatly increase the cost.
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to prevent damage to the emergency power supply when the motor and brake are driven by the emergency power supply while suppressing costs.

(Mode of Invention)
The following aspects of the invention exemplify configurations of the present invention, and will be described separately in order to facilitate understanding of the various configurations of the present invention. Each term does not limit the technical scope of the present invention. Therefore, while taking the best mode for carrying out the invention into consideration, the technical can be included in the scope.

(1) A method of driving motors and brakes used to raise and lower an object in a multistory parking system by using a commercial power supply as the drive power supply during normal times, and by using an emergency power supply as the drive power supply during a power failure, The drive power source and the motor are connected via a first switch, the drive power source and the brake are connected via a second switch, and the drive power source is the emergency power source. , the first switch and the second switch are separately controlled, and the motor is driven with the brake released to raise the object and operate the brake. A method for driving a motor and a brake that lowers the object by driving the motor in a state.

The driving method of the motor and brake described in this section is intended for the motor and brake used for raising and lowering an object in a multistory parking system. Specifically, these motors and brakes are normally driven using a commercial power supply as a drive power supply, and are driven by switching the drive power supply to an emergency power supply during a power failure when the commercial power supply cannot be used. In addition, a first switch is installed between the drive power supply and the motor, that is, between the switching portion of the connection between the commercial power supply and the emergency power supply and the motor, and these switches are connected via the first switch. connect between Furthermore, a second switch is installed between the drive power supply and the brake, that is, between the switching portion of the connection between the commercial power supply and the emergency power supply and the brake. connect between As a result, the power supply from the drive power source to the motor and the power supply from the drive power source to the brake are switched separately.

When driven by an emergency power supply, the first switch and the second switch are separately controlled, and the object is raised and lowered by the motor and the brake. That is, when raising the object, the first switch and the second switch are controlled so that the motor is driven with the brake released. For example, in the case of specifications in which the motor is driven by the application of electric power and the brake is opened by the application of electric power, both the first switch and the second switch are closed to apply power to both the motor and the brake. By supplying it, the brake is released and the motor is driven in the direction in which the object rises. As a result, when the emergency power source is used, the object can be lifted smoothly without receiving the braking force of the brake.

On the other hand, when lowering the object, the first switch and the second switch are controlled so that the motor is driven with the brake activated. For example, if the motor and brake have the above specifications, the first switch is closed to supply power to the motor, and the second switch is opened to cut off the power supply to the brake. The brake is operated and the motor is driven in the direction in which the object descends. As a result, the object is lowered by the driving force of the motor in a state in which the movement of the object in the downward direction due to its own weight is suppressed by the brake, so that the motor does not enter the power regeneration state. Therefore, the motor does not generate power, and such power is prevented from damaging the emergency power supply. Moreover, since a braking resistor for consuming regenerative electric power, a control circuit thereof, and the like are not required, costs are suppressed. In normal times when commercial power is used as a drive power supply, there is no particular problem even if the motor is in a power regeneration state. It is sufficient to control the device and the second switch.

(2) In the above item (1), the method for driving a motor and a brake for raising and lowering, as the object, a pallet for accommodating a vehicle in the multistory parking system.
The method for driving the motor and brake described in this section drives the motor and brake used for lifting and lowering a pallet for accommodating vehicles in a multilevel parking system as an object to be lifted. Therefore, when lowering the pallet using the emergency power supply as the drive power source, the first switch and the second switch are operated so that the motor is driven in the direction in which the pallet is lowered while the brake is in operation. Control. As a result, the pallet is lowered by the driving force of the motor while the movement in the downward direction due to the pallet's own weight (and the weight of the vehicle if the pallet is accommodated by the vehicle) is suppressed by the brake. The motor does not enter the power regeneration state. Therefore, even when the motor and brake used for lifting and lowering the pallet are targeted, damage to the emergency power supply can be prevented while suppressing costs without requiring a braking resistor or the like.

(3) A device that drives motors and brakes used to raise and lower objects in a multi-storey parking system by using a commercial power supply as a drive power supply during normal times, and by using an emergency power supply as the drive power supply during a power failure, a first switch installed on wiring between the drive power supply and the motor; a second switch installed on the wiring between the drive power supply and the brake; and a control unit for controlling the switch and the second switch, wherein the control unit drives the motor with the brake released when the drive power supply is the emergency power supply. a motor for independently controlling the first switch and the second switch so that the object ascends and the object descends by driving the motor with the brake activated; Brake drive.

(4) A motor and brake driving device according to the above item (3), wherein the object is a pallet for accommodating a vehicle in the multilevel parking system.
The motor and brake driving devices described in items (3) and (4) are used in the motor and brake driving methods described in items (1) and (2), respectively, to achieve the above ( This has the same effect as the motor and brake driving methods of the items 1) and (2).

Since the present invention is configured in this manner, it is possible to prevent damage to the emergency power supply when the motor and brake are driven by the emergency power supply while suppressing costs.

1 is a block diagram showing an example of a configuration of a motor and brake driving device according to an embodiment of the present invention; FIG. FIG. 10 is an image diagram when a pallet is lifted by the motor and brake driving method according to the embodiment of the present invention; FIG. 4 is an image diagram when a pallet is lowered by the motor and brake driving method according to the embodiment of the present invention; 1. It is a perspective view which shows an example of a structure of the three-dimensional parking apparatus to which the drive device of the motor of FIG. 1 and a brake is applied.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described based on the drawings. Here, the same or corresponding parts are denoted by the same reference numerals throughout the drawings. Further, detailed descriptions of the same parts as or corresponding parts to the conventional technology will be omitted.
The driving method and driving device for the motor and brake according to the embodiment of the present invention can be used, for example, in a three-dimensional parking device 70 as shown in FIG. , FIG. 3), which drives a motor 40 and a brake 42 (see FIGS. 1 to 3).

Here, the multi-storey parking device 70 of FIG. 4 has a structure of 4 tiers and 3 consecutive bases (4 tiers in the height direction, 3 rows in the lateral direction) provided with 9 pallets 72a to 72i. , three opening/closing gates 76a to 76c are provided on the front side of the pallet 72 (pallets 72a to 72c in the state of FIG. 4) at the loading/unloading position. Of the nine pallets 72a to 72i, two pallets 72b and 72c move only laterally at the height position for entering and leaving the vehicle, and four pallets 72d to 72g move up to the entering and leaving position. The remaining three pallets 72a, 72h, and 72i can only move vertically and horizontally. A motor 40 and a brake 42 are provided for each of the pallets 72a, 72d to 72i and the opening/closing gates 76a to 76c to realize their lifting operation. And the drive method and drive device for the brake are intended to drive such a motor 40 and brake 42 .

Specifically, as shown in FIG. 1, a motor and brake driving device 10 according to an embodiment of the present invention drives a motor 40 and a brake 42 using a commercial power source 32 or an emergency power source 34 as the driving power source 30. and includes a first switch 12 , a second switch 14 , and a control section 16 . The driving power supply 30 supplies electric power for driving the motor 40 and the brake 42. Normally, the commercial power supply 32 is used as the driving power supply 30, and when the commercial power supply 32 fails, an emergency power supply 34 is used as the driving power supply 30. used as Therefore, for convenience of explanation, the drive power source 30 in FIG. 1 is illustrated as having a configuration including a commercial power source 32, an emergency power source 34, and a switching portion 36 for switching the power supply source to either of them. there is

The first switch 12 is installed on the wiring of power supply from the drive power source 30 to the motor 40, and turns on/off such power supply. Similarly, a second switch 14 is placed on the wiring of the power supply from the drive power supply 30 to the brake 42 to turn such power supply on and off. Electromagnetic contactors, for example, are used for the first switch 12 and the second switch 14, although not limited thereto. Also, the control unit 16 controls the opening/closing operation of each of the first switch 12 and the second switch 14 . Although detailed description is omitted here, for example, the control unit 16 determines whether the driving power source 30 is the commercial power source 32 or the emergency power source 34, whether the object 50 is to be raised or lowered, and the like. The opening/closing operation of the first switch 12 and the second switch 14 is controlled. The control unit 16 is implemented by various types of hardware and software, and may be incorporated in a component that controls the operation of the multi-story parking device 70, for example.

On the other hand, the motor 40 generates a driving force for raising and lowering the object 50, and receives power supply from the driving power source 30 to rotate in a direction for raising or lowering the object 50. FIG. For example, when lifting a pallet 72 as the object 50, the rotational force generated by the motor 40 is transmitted through the structure (chain 60, drum 62, wire rope 64, sheave 66, etc.) shown in FIGS. and transmitted to the pallet 72 . On the other hand, the brake 42 generates a braking force for stopping the object 50 or decelerating the lifting speed of the object 50. Upon receiving power supply from the driving power source 30, Generates or releases braking force. In the present embodiment, the following description will be given by taking as an example a case in which the braking force of the brake 42 is released when power is supplied from the drive power source 30 .

The motor 40 and the brake 42 may have any structure as long as they generate driving force and braking force as described above. Alternatively, the motor 40 and the brake 42 may be separate bodies. Since the motor 40 and the brake 42 are installed for each object 50 such as the pallet 72, the configuration of the motor and brake driving device 10 shown in FIG. , are provided for each object 50 . However, the control unit 16 can control the first switches 12 and the second switches 14 separately for some or all of the plurality of objects 50 that move up and down in the multi-level parking device 70 . may be collectively provided in one piece of hardware or the like. Also, the configuration of the motor and brake driving device 10 is not limited to the block diagram of FIG. may be a configuration in which a part of is deleted, changed, or added as appropriate.

Next, with reference to FIGS. 2 and 3, a motor and brake driving method according to an embodiment of the present invention, which is implemented using the motor and brake driving device 10 shown in FIG. 1, will be described. . First, referring to FIG. 2, a state in which a pallet 72 as an object 50 is raised during a power failure when the emergency power supply 34 is used as the drive power supply 30 is illustrated. At this time, the control unit 16 closes the first switch 12 , supplies power to the motor 40 , and rotates the motor 40 in the direction in which the pallet 72 is lifted. Specifically, by rotating the motor 40 counterclockwise in FIG. 2 , the drum 62 is rotated counterclockwise via the chain 60 . At the same time, the control unit 16 closes the second switch 14 to supply electric power to the brake 42 and release the braking force of the brake 42 .

As a result, with the braking force of the brake 42 released, the drum 62 rotates counterclockwise in FIG. is wound up by the drum 62, and the pallet 72 is lifted. Here, in the state shown in FIG. 2, the force for lifting the pallet 72 is "F", the driving force of the motor 40 is "P", and the weight of the pallet 72 (including the weight of the vehicle 90) is "W". Then, since the braking force of the brake 42 is released, the relationship is expressed as "F=PW". The method of driving the motor 40 and the brake 42 for lifting the object 50 (pallet 72) as shown in FIG.

Next, referring to FIG. 3, it is illustrated that a pallet 72 as an object 50 is lowered during a power outage when the emergency power supply 34 is used as the drive power supply 30 . At this time, the control unit 16 closes the first switch 12 , supplies power to the motor 40 , and rotates the motor 40 in the direction in which the pallet 72 is lowered. Specifically, by rotating the motor 40 clockwise in FIG. 3 , the drum 62 is rotated clockwise via the chain 60 . At the same time, under the control of the control unit 16, the second switch 14 is opened to cut off the power supply to the brake 42, and the braking force of the brake 42 is applied.

Then, the downward movement of the pallet 72 due to the weight of the pallet 72 (including the weight of the vehicle 90) is restrained by the braking force of the brake 42, and the motor 40 moves against the braking force of the brake 42. 3 rotates the drum 62 clockwise in FIG. As a result, a plurality of wire ropes 64 suspending the pallet 72 are let out through the drum 62, and the pallet 72 descends. 3, the force for lowering the pallet 72 is "F", the driving force of the motor 40 is "P", the braking force of the brake 42 is "P'", and the weight of the pallet 72 (the weight of the vehicle 90 is (including weight) is represented by the relationship of "F=WP'+P".

Here, the method of driving the motor 40 and the brake 42 for lowering the object 50 (pallet 72) as shown in FIG. Only When the commercial power source 32 is used as the drive power source 30 and the object 50 is lowered in normal times, the control unit 16 controls both the first switch 12 and the second switch 14 to close. As a result, the weight of the pallet 72 (including the weight of the vehicle 90) lowers the pallet 72 while the motor 40 is in the power regeneration state in a state where the braking force of the brake 42 is released so as not to apply a load to the brake 42.例文帳に追加Therefore, the method of FIG. 3, which is concerned about the load on the brake 42, counts the number of times it is executed, and performs maintenance such as obligating inspection of the brake 42 according to the number of times it is executed.

It should be noted that the motor and brake driving method according to the embodiment of the present invention is not limited to the configurations shown in FIGS. may be used for lifting and lowering. Further, the motor 40 to be driven, the brake 42, and the multilevel parking device 70 in which the object 50 is installed are not limited to the configuration shown in FIG. may differ from the configuration of For example, if the multi-storey parking device 70 includes a pallet 72 that moves up and down, the pallet 72 may be provided not only on the ground but also in the basement. ) may be provided with a plurality of rows of pallets 72 .

Now, according to the embodiment of the present invention having the above configuration, it is possible to obtain the following effects. That is, the method for driving a motor and brake according to the embodiment of the present invention uses a motor and brake driving device 10 as shown in FIG. A motor 40 and a brake 42 are normally driven by a commercial power source 32 as a driving power source 30, and when a power failure occurs when the commercial power source 32 cannot be used, the driving power source 30 is switched to an emergency power source 34 for driving. A first switch 12 is installed between the drive power source 30 and the motor 40, that is, between the motor 40 and the switching portion 36 for connection between the commercial power source 32 and the emergency power source 34, thereby A switch 12 connects between them. Furthermore, a second switch 14 is installed between the drive power source 30 and the brake 42, that is, between the switching portion 36 and the brake 42, and the two switches are connected via the second switch 14. do. Thereby, the power supply from the drive power source 30 to the motor 40 and the power supply from the drive power source 30 to the brake 42 can be switched separately.

When driven by the emergency power supply 34 , the control unit 16 controls the first switch 12 and the second switch 14 separately to move the object 50 up and down by the motor 40 and the brake 42 . That is, when raising the object 50, the first switch 12 and the second switch 14 are controlled so that the motor 40 is driven with the brake 42 released. For example, in the case of specifications in which the motor 40 is driven by the application of electric power and the brake 42 is opened by the application of electric power, both the first switch 12 and the second switch 14 are closed, and the motor 40 and the brake are operated. By supplying power to both 42 , the brake 42 is released and the motor 40 is driven in the direction in which the object 50 rises. As a result, for example, as shown in FIG. 2, the object 50 can be smoothly lifted when the emergency power source 34 is used without receiving the braking force of the brake 42 .

On the other hand, when the object 50 is lowered, the control unit 16 controls the first switch 12 and the second switch 14 so that the motor 40 is driven with the brake 42 activated. do. For example, when the motor 40 and the brake 42 have the above specifications, the first switch 12 is closed to supply power to the motor 40, and the second switch 14 is opened to supply power to the brake 42. is cut off, the brake 42 is operated and the motor 40 is driven in the direction in which the object 50 descends. As a result, for example, as shown in FIG. 3, the object 50 is lowered by the driving force of the motor 40 while the brake 42 restrains the downward movement of the object 50 due to its own weight. never become. Therefore, the motor 40 does not generate electric power, and it is possible to prevent the emergency power supply 34 from being damaged by such electric power. Moreover, since a braking resistor for consuming regenerative electric power, a control circuit thereof, and the like are not required, costs can be suppressed.

Further, the driving method of the motor and brake according to the embodiment of the present invention is a three-dimensional parking device 70 as shown in FIG. 50 drives a motor 40 and a brake 42 used for raising and lowering. Therefore, when the emergency power source 34 is used as the driving power source 30 to lower the pallet 72, the control unit 16 controls the motor 40 so that the motor 40 is driven in the direction in which the pallet 72 is lowered while the brake 42 is activated. to control the first switch 12 and the second switch 14 . As a result, the driving force of the motor 40 is restrained by the brake 42 from moving downward due to the weight of the pallet 72 (and the weight of the vehicle 90 if the vehicle 90 is accommodated in the pallet 72). , the pallet 72 descends and the motor 40 does not enter the power regeneration state. Therefore, even when the motor 40 and the brake 42 used for lifting the pallet 72 are targeted, it is possible to prevent damage to the emergency power supply 34 while suppressing costs without requiring a braking resistor or the like. Become.

On the other hand, the motor and brake driving device 10 according to the embodiment of the present invention is used in the motor and brake driving method as described above, so that the same effects as those of the motor and brake driving method can be obtained. can be done.

10: Motor and brake drive device 12: First switch 14: Second switch 16: Control unit 30: Drive power supply 32: Commercial power supply 34: Emergency power supply 40: Motor 42 : brake, 50: object, 70: multilevel parking device, 72: pallet, 90: vehicle

Claims (4)

A method of driving motors and brakes used to raise and lower an object in a multistory parking system by using a commercial power supply as the drive power supply during normal times, and by using an emergency power supply as the drive power supply during a power outage,
connecting between the drive power source and the motor via a first switch, and connecting between the drive power source and the brake via a second switch;
When the drive power supply is the emergency power supply, the first switch and the second switch are separately controlled, and the motor is driven with the brake released to raise the object. A method for driving a motor and a brake, wherein the object is lowered by driving the motor while the brake is actuated. 2. The motor and brake driving method according to claim 1, wherein the object is a pallet for accommodating a vehicle in the multilevel parking system. A device for driving motors and brakes used for raising and lowering objects in a multistory parking system, which is normally driven by a commercial power supply as a drive power supply, and is driven by an emergency power supply as the drive power supply during a power failure,
a first switch installed on wiring between the drive power supply and the motor; a second switch installed on the wiring between the drive power supply and the brake; A control unit that controls the switch and the second switch,
When the drive power supply is the emergency power supply, the motor is driven with the brake released to raise the object, and the motor is driven with the brake actuated. A motor and brake driving device, characterized in that the first switch and the second switch are separately controlled so that the object is lowered. 4. A motor and brake driving device according to claim 3, wherein said object is a pallet for accommodating a vehicle in said multilevel parking system.

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