JP2011111296A - Cargo delivering/depositing control method and cargo elevating/conveying equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely and quickly deliver a cargo from an entrance and exit outside a tower body, even if a depositing operation or a delivering operation of the cargo in relation to a lift car is stopped on the way due to the occurrence of a power failure. <P>SOLUTION: This cargo elevating/conveying equipment is constituted of the lift car 2 mounted with a conveyor 20, an elevating mechanism 21 for making the lift car 2 perform an elevating operation and cargo delivering/depositing devices 3 and 4 installed outside entrances and exits 11 and 12 on each floor of the tower body 1 and provided with conveyors 30 and 40 interlocking with the conveyor 20 of the lift car 2. The cargo elevating/conveying equipment includes a capacitor storing power supplied from a commercial power source during the stopping period of the elevating operation and regenerative power obtained from the motor M1 of the elevating mechanism 21 during the regenerative operation of the elevating mechanism 21. When the depositing operation or the delivering operation of the cargo is stopped on the way due to the occurrence of the power failure, the power stored in the capacitor is supplied to the conveyor 20 of the lift car 2 and conveyors 30 and 40 of the cargo delivering/depositing devices 3 and 4 on a stopped floor to deliver the cargo in process of depositing or delivering from the entrances and exits 11 and 12 outside the tower body 1. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a load lifting and lowering transportation facility for transporting loads by moving up and down a lift car from a floor to a floor or from a floor to a floor in a factory, a warehouse, a distribution center, etc. The invention relates to a loading / unloading control method for reliably unloading a load in the middle of a lift car and a load in the middle of a lift car from the lift car when a power outage occurs, and a load lifting / lowering in which the method is implemented. Concerning transport equipment.

  Conventional load lifting equipment includes towers assembled with metal frames in buildings, elevators that move up and down along the towers, and loads installed outside the entrances on each floor of the towers. It consists of a loading / unloading device. On the floor of the elevator car, a conveyor that carries the load in the horizontal direction is mounted, and the loading / unloading device on each floor is equipped with a conveyor that loads and unloads the elevator car in conjunction with the elevator car conveyor. (For example, refer to Patent Document 1).

JP 2007-290804 A

  In this type of load lifting / lowering transportation facility, for example, when a load is placed on a load loading / unloading device below the floor, the conveyor of the load loading / unloading device and the conveyor of the lifting cage are interlocked with each other from the load loading / unloading device to the inside of the lifting / lowering cage. The cargo is loaded into the site. Next, when the elevator car with the load ascends inside the tower and stops at the target floor, the conveyor of the elevator car and the conveyor of the loading / unloading device on that floor work together to carry in and out of the elevator car. The cargo is unloaded to the device.

  By the way, a shutter mechanism that closes the doorway with a shutter when a fire is detected is provided at the doorway of each floor of the tower. When the doorway of each floor is closed by a shutter, the elevator cage passage in the tower is blocked from the outside, and smoke is prevented from being guided to other floors from the floor where the fire occurred. Since this shutter mechanism is battery-driven, it operates reliably even if a power failure occurs due to a fire.

  However, when a power failure occurs, the operation of the load lifting / lowering transportation facility stops, so there is a possibility that the operation of loading or unloading the load with respect to the lifting cage stops in the middle. If a power outage occurs while the load is passing directly under the shutter, the load will be caught by the shutter that has been lowered, the entrance will not be closed, and the elevator passage in the tower will be a smoke passage. Guided from the floor where the fire occurred to another floor.

  In addition, a power failure occurs not only due to fire but also due to various causes such as lightning strikes and short circuit accidents. When an elevator car carrying a load stops in the middle of an elevator operation, the load is left behind in the tower. For example, in a facility that handles fresh foods such as seafood and frozen foods, if food is left in the tower due to the occurrence of a power outage, if left in that state, it will lead to a decrease in freshness and corruption of the food, There is a risk of ruining groceries.

  The present invention has been made paying attention to the above-described problems. Even if the load carrying-in operation or the carrying-out operation with respect to the elevator car stops midway due to the occurrence of a power failure, the load during the carrying-in or carrying-out is surely and promptly performed. The purpose of the present invention is to provide a loading / unloading control method and a load lifting / lowering transportation facility capable of unloading the container from the entrance / exit.

  Another object of the present invention is to reliably and promptly guide the elevator car in the middle of raising / lowering to the destination floor and load the cargo in the elevator car even if the raising / lowering operation of the elevator car stops midway due to the occurrence of a power failure. An object of the present invention is to provide a loading / unloading control method and a load lifting / lowering transportation facility that can be carried out of the tower body from the entrance / exit.

  The loading / unloading control method according to the present invention includes a lifting / lowering car mounted with a conveyor for loading / unloading a load, a motor-driven lifting mechanism for moving the lifting / lowering car along the tower body, and an entrance / exit of each floor of the tower body In a load lifting / lowering transport facility comprising a load loading / unloading device equipped with a conveyor that is installed on the outer side of each of the lifting cages and that loads and unloads the cargo with respect to the lifting cage in conjunction with the conveyor of the lifting cage. It has a capacitor that stores at least one of the electric power supplied from the commercial power supply and the regenerative power obtained from the motor of the lifting mechanism during the regenerative operation of the lifting mechanism, and the loading or unloading operation of the load to the lifting cage is in progress due to the occurrence of a power failure Supply the power stored in the capacitor to the elevator car conveyor and the conveyor of the loading / unloading device on the stop floor. It is characterized in that for unloading the cargo from the entrance to the tower body.

  According to the loading / unloading control method described above, when the loading / unloading operation to / from the lifting car stops halfway due to the occurrence of a power outage, the power stored in the capacitor is transferred to the lifting car conveyor and the loading / unloading device on the stop floor. To the outside of the tower, and the cargo in the middle of loading or unloading is carried out of the tower through the entrance / exit. It is possible to lower the shutter after unloading the cargo from right under the door, and the load is not caught between the shutters, so that closing of the entrance is not hindered.

  In the loading / unloading control method according to the present invention, when the lifting / lowering operation of the lifting / lowering cage is stopped halfway due to the occurrence of a power failure, the power stored in the capacitor is transferred to the motor of the lifting / lowering mechanism, the conveyor of the lifting / lowering cage and the load on the destination floor. It is supplied to the conveyor of the loading / unloading device to guide the raising / lowering car in the middle of raising / lowering to the target floor and to carry the load in the raising / lowering car out of the tower body from the entrance / exit.

  According to the loading / unloading control method described above, when the lifting / lowering operation of the lifting cage stops midway due to the occurrence of a power failure, the power stored in the capacitor is transferred to the motor of the lifting mechanism, the conveyor of the lifting cage, and the loading / unloading device on the destination floor. To the destination floor, and the cargo in the elevator car is transported out of the tower through the entrance, so in the event of a power failure due to fire, lightning strike, short circuit accident, etc. The load is not left in the tower, and the load of food such as fresh food or frozen food is not left in the tower and the food is not destroyed due to a decrease in freshness.

  The above loading / unloading control method according to the present invention can be realized by software (program) for operating a computer or by a dedicated hardware circuit.

  The load lifting / lowering transportation facility according to the present invention is for carrying out the above-described load loading / unloading control method, and the first load lifting / lowering transportation facility is a lifting / lowering carriage mounted with a conveyor for loading / unloading loads. Equipped with a motor-driven lifting mechanism that moves the car up and down along the tower body, and a conveyor that is installed outside the entrance of each floor of the tower body and carries the cargo in and out of the lifting car in conjunction with the conveyor of the lifting car At least one of electric power supplied from a commercial power supply during the lifting operation stop period and regenerative electric power obtained from the lifting mechanism motor during the regenerative operation of the lifting mechanism. , A means for determining whether the loading / unloading operation to / from the lifting car has stopped halfway in the event of a power failure, and the loading / unloading operation to / from the lifting car It is obtained by a control means for controlling. When it is determined by the determination means that the loading or unloading operation of the load on the elevator car has stopped halfway during the occurrence of a power failure, the control means transfers the electric power stored in the capacitor to the elevator car conveyor and the load on the stop floor. Supplying it to the conveyor of the carry-in / out device to execute the operation of carrying out the load during carrying-in or carrying-out from the entrance to the outside of the tower body.

  In the first load lifting / lowering transportation facility having the above-described configuration, one or both of the power supplied from the commercial power source during the lifting operation stop period and the regenerative power obtained from the lifting mechanism motor during the regenerating operation of the lifting mechanism are It is stored in the capacitor. When the determination means determines that the loading / unloading operation of the load to / from the lifting car has stopped halfway during the occurrence of a power failure, the control means transfers the electric power stored in the capacitor to the lifting / lowering car conveyor and the loading / unloading device on the stop floor. To carry out the operation of carrying the cargo in the middle of carry-in or carry-out out of the tower body from the entrance. As a result, in the event of a power outage due to a fire, the load can be lowered from the bottom of the shutter for smoke prevention provided at the entrance of each floor of the tower body, and then the shutter can be lowered. There is no hindrance between the entrance and exit.

  In addition to the configuration of the first loading / unloading control facility described above, the second load lifting / lowering transportation facility according to the present invention further includes a determination means for determining that the lifting / lowering operation of the lifting cage has been stopped halfway due to the occurrence of a power failure. And when the raising / lowering operation of the raising / lowering car is stopped halfway by the judging means when a power failure occurs, the control means uses the electric power stored in the capacitor to move the motor of the raising / lowering mechanism and the conveyor of the lifting car And the conveyor of the loading / unloading device on the destination floor to carry out the operation of guiding the raising / lowering car in the middle of raising / lowering to the destination floor and carrying the cargo in the raising / lowering car out of the tower body from the entrance / exit.

  In the second load lifting / lowering transportation facility having the above-described configuration, one or both of the electric power supplied to the motor of the lifting mechanism and the regenerative power of the motor obtained by any of the lifting operations during standby of the lifting operation are stored in the capacitor. It is charged. If the discriminating means determines that the raising / lowering operation of the elevator car has stopped halfway during the occurrence of a power failure, the control means uses the electric power stored in the capacitor to load / unload the elevator mechanism motor, elevator cage conveyor and destination floor. Power is supplied to the conveyor of the apparatus to guide the elevator car in the middle of raising and lowering to the target floor and to carry out the load in the elevator car from the entrance to the outside of the tower body. As a result, when a power failure occurs due to a fire, lightning strike, short circuit accident, etc., the load will not be left in the tower body, and the load such as food will be left in the tower body to reduce the freshness. There is no uselessness.

In the above-described configuration of the present invention, a roller conveyor is typically used as the conveyor mounted on the elevator car and the conveyor for loading and unloading on each floor. However, the present invention is not limited to this, and a belt conveyor or chain conveyor. It is also possible to use other types of conveyors.
The “capacitor” is composed of a large-capacity capacitor such as an electric double layer capacitor, but is not limited thereto.
Furthermore, the “control means” and “discrimination means” constituting each of the first and second cargo lifting / lowering facilities can be realized by a programmed computer, but can also be realized by a dedicated hardware circuit. .

In a preferred embodiment of the present invention, the control means supplies the electric power stored in the capacitor during the power running operation of the lifting mechanism to the motor of the lifting mechanism.
According to this embodiment, energy saving can be achieved, and the commercial power used can be reduced. Moreover, peak power can be suppressed and the facility capacity of the commercial power supply can be reduced.

According to the present invention, even if the loading or unloading operation of the load to or from the elevator car stops halfway due to the occurrence of a power failure, the load during loading or unloading can be reliably and quickly carried out of the tower body from the doorway. Therefore, in the event of a power outage due to a fire, it is possible to drop the shutter after unloading the cargo from just below the shutter for smoke prevention provided at the entrance of each floor of the tower. There will be no hindrance between the doorway and the doorway.
In addition, even if the raising / lowering operation of the elevator car stops midway due to the occurrence of a power failure, the elevator car in the middle of raising / lowering can be reliably and promptly guided to the target floor and the cargo in the elevator car can be carried out of the tower through the entrance / exit. . Therefore, when a power failure occurs due to a fire, lightning strike, short circuit accident, etc., the load is not left in the tower, and the load of food such as fresh food or frozen food is left in the tower. There is no loss of food due to a decline in freshness.

It is the perspective view which abbreviate | omitted a part of tower body which shows the structure of the load raising / lowering conveyance equipment which is one Example of this invention. It is a side view which shows schematic structure and sensor arrangement | positioning of a load raising / lowering conveyance installation. It is a top view which shows sensor arrangement | positioning of a load raising / lowering conveyance installation. It is a top view which shows the flow of loading / unloading operation | movement of a load. It is an electric circuit diagram which shows the structure of the drive system of a load raising / lowering conveyance installation. It is explanatory drawing which shows the power consumption of the motor of a raising / lowering mechanism. It is a block diagram which shows the structure of the control circuit of a load raising / lowering conveyance installation. It is a flowchart which shows the flow of control when conveying a load from the 1st floor to the 2nd floor. It is a flowchart which shows the flow of control when conveying a load from the 2nd floor to the 1st floor. It is a flowchart which shows the flow of control at the time of a power failure. It is a flowchart which shows the method of discriminating a load conveyance process. It is a side view which shows the other example of a raising / lowering cage | basket and a loading / unloading apparatus.

FIG. 1 shows a schematic configuration of a load lifting / lowering transportation facility according to an embodiment of the present invention.
The load lifting / lowering transportation facility in the illustrated example is provided to transport loads between the first floor F1 and the second floor F2 of the building, and is a tower assembled in the building with a metal frame or the like. The body 1, the elevator car 2 that moves up and down along the tower body 1, and the loading / unloading devices 3 and 4 installed outside the entrances 11 and 12 of each floor of the tower body 1, respectively. Has been. Although not shown, battery-operated smoke-proof shutters are installed at the entrances 11 and 12 of each floor of the tower body 1.

  The elevator car 2 is connected to the elevator mechanism 21 shown in FIG. 2, and moves up and down between the floor F1 on the first floor and the floor F2 on the second floor. The lifting mechanism 21 is formed by connecting the lifting cage 2 to one end of the rope 22 and the counterweight 23 to the other end, and winding the rope 22 around the winding mechanism 24. The winding mechanism 24 is driven by a motor M1 capable of forward and reverse rotation. In this embodiment, a three-phase induction motor is used as the motor M1 and motors M2 to M4 described later.

  On the floor surface of the elevator car 2, a conveyor 20 is mounted for supporting the load and transporting the load in the horizontal direction. Although the conveyor 20 of the example of illustration is comprised by the roller conveyor, it is not restricted to this, Other types of conveyors, such as a belt conveyor and a chain conveyor, can also be used. The conveyor 20 is driven in forward and reverse directions by a motor M2.

  The loading / unloading devices 3 and 4 on each floor include conveyors 30 and 40 for loading and unloading loads to and from the lifting cage 2 in conjunction with the conveyor 20 of the lifting cage 2. Although the roller conveyors are used for the conveyors 30 and 40 in the illustrated example, the present invention is not limited to this, and a belt conveyor can also be used. The conveyors 30 and 40 are driven in forward and reverse directions by motors M3 and M4, respectively.

Position detection sensors S _F1 and S _F2 and loading / unloading detection sensors S ₁₂ and S ₂₂ are installed at appropriate positions of the tower body 1. One position detecting sensor S _F1 detects that the elevator car 2 has reached the stopping position of the first floor floor F1, the other position detection sensor S _F2 elevator car 2 reaches the stop position of the second floor of the floor F2 Detecting that Further, installed in one of the luggage loading and unloading detection sensor S ₁₂ is the ground floor of the entrance 11, whether the load is present in the opening position of the inlet and outlet 11, that is, present in a state where load is across between conveyors 30, 20 Detect whether or not The other loading / unloading detection sensor S ₂₂ is installed at the entrance / exit 12 on the second floor, and whether there is a load at the opening position of the entrance / exit 12, that is, whether the load is straddling between the conveyors 20 and 40. Detect if. In this embodiment, limit switches are used as the position detection sensors S _F1 and S _F2 , and photoelectric sensors are used as the load / unload detection sensors S ₁₂ and S _22. However, the present invention is not limited to this.

FIG. 3 shows the load detection sensors S ₀₁ and S ₀₂ for detecting where the load is present on the conveyor 20 of the elevator car 2 and the conveyors 30 and 40 of the load loading / unloading devices 3 and 4 on each floor. The load detection sensors S ₁₁ and S ₂₁ for detecting at which position the load is present are shown. One of the load detection sensor S ₀₁ of the lift cage 2 is located at the end side of the first floor of the doorway 11, the other of the load detection sensor S ₀₂ is disposed at the end portion on the side of the second floor of the entrance 12. The load detection sensors S ₁₁ , S ₂₁ of the load loading / unloading devices 3, 4 on each floor are respectively arranged at end portions far from the tower body 1. In this embodiment, limit switches, photoelectric sensors, and the like are used as the load detection sensors S ₀₁ , S ₀₂ , S ₁₁ , S ₂₁ , but are not limited thereto.

On / off signals obtained by the load detection sensors S ₀₁ and S _{02 of} the elevator car 2 and on / off signals obtained by the load detection sensors S ₁₁ and S ₂₁ of the load loading / unloading devices 3 and 4 on each floor. The on / off signal obtained by the loading / unloading detection sensors S ₁₂ and S _{22 at} the entrances 11 and 12 on each floor and the position detection sensors S _F1 and S _{F2 on} each floor indicate which stage the load is in. Can be determined.
FIGS. 4 (1) to 4 (8) show the process of transporting the load R when the load R is transported from the first floor F1 to the second floor F2.

Such as by a forklift or a conveyor, the first floor of the load to the end position on the conveyor 30 of the luggage loading and unloading device 3 R is introduced, the load detection sensor S ₁₁ is turned on (FIG. 4 (1)), load loading and unloading The conveyor 30 of the device 3 and the conveyor 20 of the elevator car 2 are driven into the method of loading the load. When load R by the driving of the conveyor 30 starts to move toward the first floor of the doorway 11 of the tower body 1, first, a load detection sensor S ₁₁ is turned off (FIG. 4 (2)), load R is 1 floor entrance when reaching the 11, and on-load loading and unloading detection sensor _{S 12} is followed by a load detecting sensor _{S 01} of one end of the cabin 2 is turned on (FIG. 4 (3)). In the state of FIG. 4 (3), the load R is located between the conveyor 20 of the elevator car 2 and the conveyor 30 of the loading / unloading device 3.

When load R falls on the conveyor 20 of the cabin 2, cargo loading and unloading detection sensor _{S 12} and load sensor _{S 01} are both turned off (FIG. 4 (4)). Driven stops of both conveyors 20 and 30 at the time the load detection sensor S ₀₂ of the other end of the cabin 2 is turned on (FIG. 4 (5)), load carrying operation is completed to the cabin 2.

Next, the position detecting sensor S _F1 of the lift car 2 (not shown) started to rise off, the second floor of the position detecting sensor S _F2 (not shown) to reach the floor F2 is turned on, rise of the lift cage 2 is stopped, The conveyor 20 of the elevator car 2 and the conveyor 40 of the loading / unloading device 4 on the second floor are driven in the direction of unloading the load. When the load R starts to move toward the entrance / exit 12 on the second floor of the tower body 1 by driving the conveyor 20, the load / unload detection sensor S ₂₂ is turned on (FIG. 4 (6)), and the load R is stored in the elevator car 2. It is located in a state straddling between the conveyor 20 and the conveyor 40 of the loading / unloading device 4. When the load R passes through the entrance / exit 12 on the second floor of the tower body 1 and is transferred onto the conveyor 40 of the load / unload device 4, the load detection sensor S ₀₂ of the elevator car 2 is turned off. cargo loading and unloading detection sensor _{S 22} is turned off (FIG. 4 (7)). Load R is driven stops of both conveyors 20, 40 at the time the load detection sensor S ₂₁ reaches the end of the conveyor 40 of the load loading and unloading device 4 is turned on (FIG. 4 (8)), load the conveyance is completed To do.

FIG. 5 shows a circuit configuration of a drive system of the above-described load lifting / lowering equipment.
In the figure, reference numeral 5 denotes a three-phase alternating current commercial power source, and the commercial power from the commercial power source 5 is converted into direct current through a converter 50 including a rectifier circuit and a smoothing capacitor. By this AC-DC conversion, the voltage between the DC buses 56 and 57 is boosted to a predetermined voltage (for example, 290 V), and operation is possible. The DC buses 56 and 57 drive the motor M1 of the lifting mechanism 21, the motor M2 that drives the conveyor 20 of the lifting cage 2, and the conveyor 30 of the loading / unloading device 3 on the first floor via inverters 51 to 54. The motor M3 for driving and the motor M4 for driving the conveyor 40 of the loading / unloading device 4 on the second floor are connected to each other, and the electric power converted by the inverters 51 to 54 is supplied to the motors M1 to M4. Is done.

  A capacitor 6 is connected to the DC buses 56 and 57 via a DC-DC converter 60. In the illustrated example, a large capacity capacitor such as an electric double layer capacitor is used as the capacitor 6. The DC-DC converter 60 includes a charging circuit 61 and a discharging circuit 62. When the DC-DC converter 60 receives a charging start command from the control circuit 7 shown in FIG. Is supplied to the capacitor 6 through the charging circuit 61. When the DC-DC converter 60 receives a charging start command from the control circuit 7 during the regenerative operation of the lifting mechanism 21, the regenerative power obtained from the motor M <b> 1 of the lifting mechanism 21 is stored in the capacitor 6 through the charging circuit 61.

In this embodiment, when the elevator car 2 rises from the first floor to the second floor in an empty state due to the load of the counterweight 23, the elevator mechanism 21 performs a regenerative operation. In addition, when the elevator car 2 is lowered from the second floor to the first floor while the elevator car 2 is empty, and when the elevator car 2 is moved up and down between the first floor and the second floor while being loaded, a power running operation is performed.
In the figure, 55 is a power regeneration unit connected to the DC buses 56 and 57. When a regeneration start command is received from the control circuit 7 and the voltage between the DC buses 56 and 57 exceeds a predetermined value, power is supplied to the power source side. Regenerative state is assumed. When the voltage between the DC buses 56 and 57 becomes equal to or higher than a predetermined value, such as when the capacitor 6 is fully charged by charging during the regenerative operation, the regenerative energy is returned from the power regeneration unit 55 to the commercial power source 5. It is.

  When the DC-DC converter 60 receives a discharge start command from the control circuit 7 during the power running operation, the electric power stored in the capacitor 6 is supplied to the motor M1 of the lifting mechanism 21 through the discharge circuit 62 of the DC-DC converter 60. This discharge boosts the voltage between the DC buses 56 and 57 to a predetermined value (eg, 320 V). When the inverter 51 receives an operation start command from the control circuit 7 during the power running operation, the electric power supplied from the commercial power source 5 to the inverter 51 through the converter 50 is applied to the motor M1, and the motor M1 is driven thereby. As shown in FIG. 6, the power required for driving M1 is consumed from the power stored in the capacitor 6, and the power from the commercial power source 5 is supplied when the power consumption exceeding the discharge capability of the capacitor 6 is required. The As a result, energy saving is realized, commercial power to be used can be reduced, and peak power can be suppressed. FIG. 6 shows the power consumption during acceleration, constant speed, and deceleration of the motor M1, and the power consumption of the motor M1 is maximized during acceleration.

  When each of the other inverters 52 to 54 receives an operation start command from the control circuit 7, electric power supplied from the commercial power source 5 to the inverters 52 to 54 via the converter 50 is applied to the motors M2 to M4, respectively. M2 to M4 are driven. The conveyor 20 of the elevator car 2 is driven by driving the motor M2, the conveyor 30 of the loading / unloading device 3 on the first floor is driven by driving the motor M3, and the conveyor of the loading / unloading device 4 on the second floor is driven by driving the motor M4. 40 is driven.

  When the DC-DC converter 60 receives a discharge start command from the control circuit 7 when a power failure occurs, the power stored in the capacitor 6 passes through the discharge circuit 62 of the DC-DC converter 60 and the conveyor M1 and the elevator car 2 conveyor. The motor M2 of the first floor, the motor M3 of the conveyor 30 of the loading / unloading device 3 on the first floor, and the motor M4 of the conveyor 40 of the loading / unloading device 4 of the second floor are supplied. When the loading or unloading operation of the load on the lifting car 2 is stopped halfway due to the occurrence of a power failure, a capacitor is added to the motor M2 of the conveyor 20 of the lifting car 2 and the motor M3 or M4 of the conveyor of the loading / unloading device on the stop floor. The electric power stored in 6 is supplied. When the raising / lowering operation of the elevator car 2 stops halfway due to the occurrence of a power failure, the motor M1 of the elevator mechanism 21, the motor M2 of the conveyor 20 of the elevator car 2, and the motor M3 or M4 of the conveyor of the loading / unloading device on the destination floor The electric power stored in the capacitor 6 is supplied.

FIG. 7 shows the configuration of the control circuit 7 described above and the configuration of each input / output unit connected to the control circuit 7 via the bus 75.
The control circuit 7 in the illustrated example is configured by a microcomputer, and includes a CPU 70 that is a main body of control and calculation, a ROM 71 that stores programs and fixed data, and a RAM 72 that is used for reading and writing various data. Yes. The CPU 70 includes the load detection sensors S ₀₁ , S ₀₂ , S ₁₁ , S ₂₁ , load / unload detection sensors S ₁₂ , S ₂₂ , position detection sensors S _F1 , S _F2 , operation panels 73, 74 on each floor, power supply Input / output units such as the regenerative unit 55, the DC-DC converter 60, the inverter 51 for driving up and down, and the inverters 52 to 54 for driving the conveyor are electrically connected via a bus 75. The operation panels 73 and 74 are installed in the vicinity of the entrances 11 and 12 on the first floor and the second floor, and are provided with buttons for inputting various commands, key switches for inputting data, a display, a notification lamp, and the like. It has been.
The CPU 70 sequentially controls the operation of each input / output unit while reading / writing data from / to the RAM 72 according to a program stored in the ROM 71.
The uninterruptible power supply 8 is connected to the control circuit 7 and each sensor described above, and even if a power failure occurs, the control operation by the control circuit 7 and the detection operation by each sensor will not be hindered.

FIG. 8 shows the flow of control by the control circuit 7 when a load is transported from the first floor to the second floor. In the figure, “ST” is an abbreviation for “STEP” and indicates each procedure in the flow of control.
In ST1 of the figure, the CPU 70 determines whether or not it is in a “standby state” where operation is possible. If the determination is “YES”, the automatic operation button on the operation panel 73 on the first floor is set in the next ST2. Determine if it was pressed. If the determination is “NO”, the CPU 70 issues a charge start command to the DC-DC converter 60 (ST 3), and electric power is stored in the capacitor 6 through the charging circuit 61.

When the automatic operation button is pressed, the determination in ST2 is “YES”, and in next ST3, the CPU 70 determines whether or not a load is placed on the conveyor 30 of the load loading / unloading device 3 on the first floor. When mounting the load is detected by the load detection sensor _{S 11,} the determination of ST4 becomes "YES", CPU 70 gives the operation starting instruction to the inverter 52, the motor M2 of the conveyor 20 of the cabin 2 1F The motor M3 of the conveyor 30 of the cargo loading / unloading device 3 is driven (ST5). Thereby, the carrying-in operation of the load to the elevator car 2 is started. When that load from the load loading and unloading device 3 to the elevator car 2 becomes carried already been possessed is detected by the load detection sensor _{S 02,} the determination of ST6 is "YES", CPU 70 is shut down to inverter 52, 53 A command is given and the motors M2 and M3 of the conveyors 20 and 30 are stopped (ST7).

Next, the CPU 70 gives a discharge start command to the DC-DC converter 60 (ST8), discharges the electric power stored in the capacitor 6 through the discharge circuit 62, and then gives an operation start command to the inverter 51 to raise and lower the mechanism. 21 motor M1 is driven (ST9). Thereby, the raising / lowering cage | basket | car 2 which loaded the load raises. When reaching the second floor of the elevator car 2 is detected by the position detection sensor _{S F2,} determination is "YES" in ST10, CPU 70 stops the motor M1 of the lifting mechanism 21 gives the operation stop instruction to the inverter 51 (ST11), a discharge stop command is given to the DC-DC converter 60 (ST12).

Next, the CPU 70 gives an operation start command to the inverters 52 and 54, and drives the motor M2 of the conveyor 20 of the elevator car 2 and the motor M4 of the conveyor 40 of the loading / unloading device 4 on the second floor (ST13). Thereby, the carrying-out operation of the load from the elevator car 2 is started. When it from cabin 2 becomes out already by possessed the load to the load loading and unloading device 4 is detected by the load detection sensor _{S 21,} the determination of ST14 is "YES", CPU 70 is shut down to inverter 52 A command is given and the motors M2 and M4 of the conveyors 20 and 40 are stopped (ST15).

Next, the CPU 70 gives a discharge start command to the DC-DC converter 60 (ST16), discharges the electric power stored in the capacitor 6 through the discharge circuit 62, and then gives an operation start command to the inverter 51. The motor M1 is driven (ST17). As a result, the elevator car 2 moves downward. When reaching the first floor of the elevator car 2 is detected by the position detection sensor _{S F1,} determination is "YES" in ST18, CPU 70 stops the motor M1 of the lifting mechanism 21 gives the operation stop instruction to the inverter 51 (ST19), a discharge stop command is given to the DC-DC converter 60 (ST20).

FIG. 9 shows the flow of control by the control circuit 7 when a load is transported from the second floor to the first floor.
In ST1 of the figure, the CPU 70 determines whether or not the “standby state” is operable. If the determination is “YES”, the automatic operation button on the operation panel 74 on the second floor is set in the next ST2. Determine if it was pressed. If the determination is “NO”, the CPU 70 gives a charge start command to the DC-DC converter 60 (ST 3), and electric power is stored in the capacitor 6 through the charging circuit 61.

When the automatic operation button is pressed, the determination in ST2 is “YES”, and in next ST3, the CPU 70 determines whether or not a load is placed on the conveyor 40 of the loading / unloading device 4 on the second floor. When mounting the load is detected by the load detection sensor _{S 21,} the determination of ST4 becomes "YES", CPU 70 gives the operation starting instruction to the inverter 52, the motor M2 of the conveyor 20 of the cabin 2 2 Floor The motor M4 of the conveyor 40 of the cargo loading / unloading device 4 is driven (ST5). Thereby, the carrying-in operation of the load to the elevator car 2 is started. When the load detection sensor S ₀₁ detects that the load has been transferred from the loading / unloading device 4 to the elevator car 2 and has been loaded, the determination of ST 6 becomes “YES”, and the CPU 70 stops the operation of the inverters 52 and 54. A command is given and the motors M2 and M4 of the conveyors 20 and 40 are stopped (ST7).

Next, the CPU 70 gives a discharge start command to the DC-DC converter 60 (ST8), discharges the electric power stored in the capacitor 6 through the discharge circuit 62, and then gives an operation start command to the inverter 51. The motor M1 is driven (ST9). As a result, the elevator car 2 on which the load is loaded moves downward. When reaching the first floor of the elevator car 2 is detected by the position detection sensor _{S F1,} determination is "YES" in ST10, CPU 70 stops the motor M1 of the lifting mechanism 21 gives the operation stop instruction to the inverter 51 (ST11), a discharge stop command is given to the DC-DC converter 60 (ST12).

Next, the CPU 70 gives an operation start command to the inverters 52 and 53 to drive the motor M2 of the conveyor 20 of the elevator car 2 and the motor M3 of the conveyor 30 of the loading / unloading device 3 on the first floor (ST13). Thereby, the carrying-out operation of the load from the elevator car 2 is started. When the load from the cabin 2 to the load loading and unloading device 3 is turned out already by possessed is detected by the load detection sensor _{S 11,} the determination of ST14 is "YES", CPU 70 is shut down to inverter 52, 53 A command is given to stop the motors M2 and M3 of the conveyors 20 and 30 (ST15).

Next, the CPU 70 gives a regeneration start command to the power regeneration unit 55 and also gives an operation start command to the inverter 51 to drive the motor M1 of the lifting mechanism 21 (ST16, 17), so that the empty lifting cage 2 is regenerated. To move up. When reaching the second floor of the elevator car 2 is detected by the position detection sensor _{S F2,} determination is "YES" in ST18, CPU 70 stops the motor M1 of the lifting mechanism 21 gives the operation stop instruction to the inverter 51 (ST19), a regeneration stop command is given to the power regeneration unit 55 (ST20).

FIG. 10 shows the flow of control by the control circuit 7 during a power failure.
When the determination of ST1 in the figure becomes “YES” due to the occurrence of a power failure, the CPU 70 checks in which stage of the conveyance process the load is (ST2). As a result of the check, when it is determined that all or part of the load is on the elevator car 2, the CPU 70 issues a discharge start command to the DC-DC converter 60 and uses the electric power stored in the capacitor 6 as the discharge circuit 62. Then, the operation command is awaited (ST4).

  Now, when it is determined that the elevator car 2 is stopped on the first floor or the second floor and the loading or unloading operation is in progress, that is, the loading / unloading of the elevator 20 on the conveyor 20 and the first floor is performed. When it is determined that it is in a state straddling between the conveyor 30 of the apparatus 3 or the conveyor 40 of the loading / unloading apparatus 4 on the second floor, the determination of ST5 is “YES”, and the CPU 70 is the conveyor 20 of the elevator car 2 The motor M2 of the first floor and the motor M3 of the conveyor 30 of the loading / unloading device 3 on the first floor or the motor M4 of the conveyor 40 of the loading / unloading device 4 on the second floor to drive the load from the elevator car 2 (ST8), a discharge stop command is given to the DC-DC converter 60 (ST9). After carrying out the above control and forcibly carrying out the load, the shutters on each floor for smoke prevention are lowered and the entrances 11 and 12 are closed.

  If it is determined that the elevator car 2 is in the middle of raising / lowering, the judgment of ST5 is “NO”, the judgment of ST6 is “YES”, and the CPU 70 first drives the motor M1 of the elevator mechanism 21 to move the elevator car 2 up. After shifting to the destination floor (ST7), the motor M2 of the conveyor 20 of the elevator car 2 is driven and the motor M3 of the conveyor 30 of the first floor loading / unloading device 3 or the conveyor 40 of the second floor loading / unloading device 4 is driven. The motor M4 is driven to carry the load out of the elevator car 2 (ST8).

  If it is determined that the elevator car 2 is stopped on the first floor or the second floor and is in a state immediately after the completion of the load carrying-in operation or a state immediately before the start of the load unloading operation, the determination in ST5 is “NO”. The determination at ST6 is also “NO”, and the CPU 70 drives the motor M2 of the conveyor 20 of the elevator car 2 and the conveyor M of the conveyor 30 of the loading / unloading device 3 on the first floor or the conveyor of the loading / unloading device 4 on the second floor. Forty motors M4 are driven to carry the load out of the elevator car 2 (ST8).

In step ST2 in FIG. 10 described above, it is necessary to sequentially store the current position in, for example, the RAM 72 of the control circuit 7 in order to determine in which stage the load is in the transfer process. There is.
FIG. 11 shows a specific example of a procedure for sequentially storing a load carrying process (current position) when carrying a load from the first floor to the second floor using a plurality of flags.
In ST2-1 in FIG, whether load detection sensor S ₁₁ of the first floor of the load loading and unloading device 3 is turned on, that is, to determine whether it detects a load, the determination is accustomed to "YES" If it is determined that the load has been placed on the conveyor 30 of the load / unload device 3 (see FIG. 4A), the load acceptance flag F1 is set in a predetermined area of the RAM 72 (ST2-3).

In the next ST2-2, the have been determined load detection sensor S ₁₁ is whether the off, the determination is if "YES", the load of the load by operating the conveyor 30 of the luggage loading and unloading device 3 It is determined that the conveyance is started (see FIG. 4B), and the load conveyance start flag F2 is set in a predetermined area of the RAM 72 (ST2-5).

In the next ST2-4, and to determine whether the first floor of the cargo loading and unloading detection sensor S ₁₂ is turned on, if the determination is "YES", the load is lifting from the conveyor 30 of the luggage loading and unloading device 3 It is determined that the car 2 is being carried into the conveyor 20 (see FIG. 4 (3)), and a loading-in flag F3 is set in a predetermined area of the RAM 72 (ST2-7).

In the next ST2-6, the and luggage loading and unloading detection sensor S ₁₂ it is determined whether the off, if the determination is "YES", the lifting load from the conveyor 30 of the luggage loading and unloading device 3 car 2 (See FIG. 4 (4)), and the loaded flag F4 is set in a predetermined area of the RAM 72 (ST2-9).

In the next ST2-8, and it is judged whether the load detection sensor S ₀₂ of the lift cage 2 is turned on, if the determination is "YES", and loading of the cargo into the cabin 2 and complete lifting It is determined that the vehicle 2 is waiting for the ascending operation (see FIG. 4 (5)), and the ascending standby flag F5 is set in a predetermined area of the RAM 72 (ST2-11).

In the next ST2-10, and to determine whether the first floor of the position detecting sensor S _F1 is turned off, it is determined if the determination is "YES", the elevator car 2 is increasing, raising flag F6 is set in a predetermined area of the RAM 72 (ST2-13).
In the next ST2-12, and to determine whether the second floor of the position detecting sensor S _F2 is turned on, if the determination is "YES", the carry-out of the load cabin 2 reaches the second floor It is determined that the vehicle is waiting, and the unloading standby flag F7 is set in a predetermined area of the RAM 72 (ST2-15).

In the next ST2-14, and to determine whether the second floor of the luggage loading and unloading detection sensor S ₂₂ is turned on, the determination is if "YES", the load from the conveyor 20 of the cabin 2 upstairs It is determined that the cargo is being carried out to the conveyor 40 of the loading / unloading device 4 (see FIG. 4 (6)), and the loading / unloading flag F8 is set in a predetermined area of the RAM 72 (ST2-17).

In the next ST2-16, and to determine whether the second floor of the luggage loading and unloading detection sensor S ₂₂ is turned off, if the determination is "YES", the load is a load loading and unloading from the conveyor 20 of the cabin 2 It is determined that the transfer has been made to the conveyor 30 of the apparatus 3 (see FIG. 4 (7)), and the unloaded flag F9 is set in a predetermined area of the RAM 72 (ST2-19).

In the next ST2-18, and to determine whether the second floor of the cargo loading and unloading device 4 of the load detection sensor S ₂₁ is turned on, if the determination is "YES", the load to the load loading and unloading device 4 (See FIG. 4 (8)), the load transfer end flag F10 is set in a predetermined area of the RAM 72 (ST2-21).

In the next ST2-20, 2-floor cargo unloading and loading detection sensor S ₂₁ of input device 4 determines whether the off, if the determination is "YES", the load loading and unloading device 4 conveyor 40 It is determined that the load has been removed from above, and all the flags F1 to F10 are reset from a predetermined area of the RAM 72 (ST2-22).
Therefore, it can be determined by checking the set state of the flags F1 to 10 by referring to a predetermined area of the RAM 72 to determine in which stage the load is in the transport process. If F3 is set and the loaded flag F4 is not set, the determination in ST5 of FIG. 10 is “YES”.

  The present invention is not limited to the load lifting / lowering equipment having the above-described configuration, and as shown in FIG. 12, the conveyor 20a for transporting the load to the lifting cage 2 and the conveyor 20b for transporting the empty pallet are arranged in two upper and lower stages. However, it is also possible to implement the load lifting / lowering equipment having a structure in which the conveyor 30a for transporting the load and the conveyor 30b for transporting the empty pallet are arranged in two upper and lower stages in the loading / unloading apparatus on each floor.

DESCRIPTION OF SYMBOLS 1 Tower body 11,12 Doorway 2 Lifting cage 3,4 Loading / unloading device 6 Capacitor 7 Control circuit 20,30,40 Conveyor 21 Lifting mechanism

Claims (5)

  A lift car with a conveyor for loading and unloading, a motor-driven lift mechanism that moves the lift car along the tower body, and the elevator car installed on the outside of the entrance of each floor of the tower body. In a load lifting / lowering facility composed of a loading / unloading apparatus having a conveyor for loading / unloading loads to / from a lifting car in conjunction with the conveyor, electric power and lifting mechanism supplied from a commercial power supply during the lifting / lowering operation stop period Has a capacitor that stores at least one of the regenerative power obtained from the motor of the lifting mechanism during regenerative operation, and is stored in the capacitor when the loading or unloading operation of the load to the lifting car stops halfway due to a power failure Electric power is supplied to the elevator car conveyor and the conveyor of the loading / unloading device on the stop floor, and the load during loading or unloading is carried out of the tower from the entrance / exit. Cargo loading and unloading control method characterized by.   2. The loading / unloading control method according to claim 1, further comprising: when the lifting / lowering operation of the lifting / lowering car stops halfway due to a power failure, the power stored in the capacitor is transferred to the lifting / lowering mechanism motor and the lifting / lowering car conveyor. And a loading / unloading device conveyor on the destination floor, guiding the raising / lowering car in the middle of raising / lowering to the destination floor, and unloading the cargo in the raising / lowering car from the entrance / exit to the outside of the tower body. .   A lift car with a conveyor for loading and unloading, a motor-driven lift mechanism that moves the lift car along the tower body, and the elevator car installed on the outside of the entrance of each floor of the tower body. In a load lifting / lowering facility composed of a loading / unloading apparatus having a conveyor for loading / unloading loads to / from a lifting car in conjunction with the conveyor, electric power and lifting mechanism supplied from a commercial power supply during the lifting / lowering operation stop period A capacitor that stores at least one of the regenerative power obtained from the motor of the lifting mechanism during the regenerative operation, a determination means that determines whether the loading or unloading operation of the load with respect to the lifting cage has stopped halfway when a power failure occurs, Control means for controlling the loading / unloading operation of the load with respect to the car, and when the power failure occurs, the determination means performs a loading / unloading operation of the load with respect to the lifting / lowering car. When it is determined that the load has stopped, the control means supplies the power stored in the capacitor to the conveyor of the elevator car and the conveyor of the load loading / unloading device on the stop floor to take in / out the load during loading or unloading A load lifting and lowering transportation facility that allows the user to carry out the operation of transporting out of the tower.   4. The load lifting / lowering transportation facility according to claim 3, further comprising a determining means for determining that the lifting / lowering operation of the lifting / lowering car has stopped halfway due to the occurrence of a power outage, and when the power failure occurs, When it is determined that the lifting / lowering operation has stopped halfway, the control means supplies the power stored in the capacitor to the motor of the lifting mechanism, the conveyor of the lifting cage, and the conveyor of the loading / unloading device on the destination floor. A load lifting and lowering transportation facility that guides the elevator car in the middle of raising and lowering to the target floor and allows the cargo in the elevator car to be carried out of the tower through the doorway.   5. The load lifting / lowering transportation facility according to claim 3, wherein the control unit supplies power stored in the capacitor to a motor of the lifting mechanism during a power running operation of the lifting mechanism.

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