JPH0441029B2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary of the Invention] The fire monitoring unit sends a fire door closing request signal to the conveyance control unit, and the conveyance control unit has a judgment unit, which determines the state of the conveyance system. After confirmation, a fire door closure permission signal is sent.

The system status is whether or not there is a carrier on the way to be transported, and if there is not, a fire door closing permission signal is immediately sent out.

If there is a fire door, it is checked whether or not there is a fire door on the conveyance route of the conveyor, and if not, a fire door closing permission signal is immediately sent.

If there is a fire door, the current position of the conveyor and the distance to the fire door are determined, it is determined whether the conveyor can pass through the fire door within a predetermined time, and the door is closed after waiting for the conveyor to pass. Send permission signal. Alternatively, the carrier is controlled to stop and a fire door closing permission signal is immediately sent.

[Industrial application field]

The present invention relates to a conveyance system in which a conveyor moves on a conveyance path, and particularly to a fire protection device for a system in which a conveyor conveys between two fire protection compartments.

In recent years, automation in factories, offices, etc., that is, FA and OA, has been promoted, and automatic conveyance equipment is part of this. The conveyance device is operated by moving a conveyance body carrying an article from a certain position to a target position on a conveyance path.

As the scale of the transport device increases, the transport system changes from transport within one fire protection compartment to a system that connects two or more fire protection compartments. Along with this, disaster prevention problems arise. In other words, in a transport device in which the transport body moves only within one compartment, there is no need for an opening between the two compartments through which the transport body passes, so disaster prevention can be dealt with by closing the opening within that compartment. A transportation system that connects two or more fireproof compartments requires a disaster prevention system that takes the openings into consideration.

[Prior art]

In conventional fire prevention systems, a fire door is generally installed to shield the space connecting the two compartments, and when a fire occurs, the fire door is activated, thereby blocking the space between the compartments and preventing the spread of fire. .

[Problem that the invention seeks to solve]

However, even if this fire protection system is applied directly to the transport device, it is not possible to completely isolate the compartments. This is because if a fire door is activated unconditionally due to a fire outbreak, if a conveyor is passing near the fire door at that time, it will prevent the fire door from operating and it will not be possible to completely shut off the fire door. be.

[Structure of the invention]

The present invention has been made in view of this point, and a fire door closing request signal is sent to the transport control section, and the transport control section confirms the state of the transport system, thereby sending out a fire door closing permission signal. After determining when to close the fire door, it sends a signal for permission to close the fire door.

The principle of the present invention will be explained with reference to FIG. 1st
In Fig. a, a conveyance path 2 is provided so as to connect two fireproof divisions 1a and 1b, and a conveyance body 3 moves along the conveyance path in the direction of arrow A. The transport control is performed by the transport control section 4.

A fire door 8 is provided between both compartments. This fire door 8 is driven and controlled by a drive section 7 in the direction of arrow B. The fire monitoring unit 5 receives fire detection signals S0 from smoke detectors installed at various locations in the building,
A fire door closing request signal S1 is sent to the transport control section. The conveyance control section includes a determination section 9 that confirms the state of the conveyance system by inputting this signal S1, determines the time to take out the fire door closing permission signal S2, and then sends out the fire door closing permission signal. Fire monitoring department 5
In response to receiving the signal S2, the controller sends out a fire door closing drive signal S3, and causes the fire door driving section 7 to close the fire door 8 (see Fig. 1a). The fire door closing permission signal is sent after determining the sending timing of the closing permission signal S2 with reference to the transport mode management unit 10 that manages whether or not the fire door is being transported.
Figure b] Also, with reference to the fire door installation position storage unit 12 and the conveyor target position storage unit 13,
Based on these and the current position of the conveyor, the closing permission signal S
2, and then sends out the fire door closing permission signal (Fig. 1c). Also, calculates the time required for the carrier to pass through the fire door from the fire door installation position storage unit 12, and Alternatively, the distance between the current position and the fire door installation position is calculated, and the time or distance is compared with the time or distance stored in the storage unit 14 to determine when to send the closing permission signal S2, and then the fire door closing permission signal is sent. Send [Figure 1 d] [Operation] The transport control unit determines when to send the fire door closing permission signal by checking all the states of the transport system, so it will send it at the most appropriate time depending on the state of the transport system. The fire door can be driven closed.

[Embodiments of the invention]

Examples of the present invention will be described in detail below.

In FIG. 2, a conveyance path is installed so as to connect between fire protection compartments 21 and 22. The conveyance path consists of a pair of rails 23 and 24, and a stator 25 that constitutes a part of a linear motor is attached to a part of the rails.
is fixedly supported on the base 26. The stator has a field coil, and a traveling magnetic field is formed by applying three-phase alternating current to the field coil.

27 is a conveyor (hereinafter referred to as carrier);
Move along the rail. This carrier has a secondary conductor that constitutes a part of a linear motor, and is moved by receiving a propulsive force from the traveling magnetic field and the secondary conductor.

29 is a fire door mounting cover, one end of which is attached to the floor 30
is fixed to the partition 21 and opens into the partition 21, and the other end is fixed to the partition 22.
Open to. A rail passes through this cover, and two fire doors 31 and 32 are also built in.

The interval L2 in the conveyance direction of each fire door is carrier 27.
is set longer than the length L in the transport direction (L
1<L2). Since each fire door also moves across the rail, a cutout is provided in a portion of each rail to allow the movement. This notch is provided offset with respect to the conveying direction so that the rollers of the carrier do not pass through the notch at the same time.

In order to drive the fire doors 31 and 32, drive units 33 and 34 are provided corresponding to each fire door. The drive units 33 and 34 operate the fire door in response to a closing drive signal from the fire monitoring unit 35. The fire monitoring unit 35 sends a fire door closing request signal to the linear motor control device 41 based on a fire occurrence signal from a smoke detector 36 installed in the building, and receives a fire door closing permission signal as a response. and transmits the closing drive signal.

Linear motor car control device (transport control unit) 41
is a device that controls the transportation of the carrier, and manages the carrier's starting position, target position, momentary carrier position, carrier movement speed, etc.

This control device 41 is connected to the fire monitoring section 35, receives a fire door closing request signal from the monitoring section 35, and sends a fire door closing permission signal to the monitoring section. When the fire door closing request signal is input, the control section 41 determines the timing for sending out the fire door closing permission signal based on the state of the conveyance system, and sends out the fire door closing permission signal based on the determination.

FIG. 3 shows details of the linear motor car control device 41.

The control device 41 receives the fire door closing request signal S1, determines the sending timing of the fire door closing permission signal S2, and sends out the signal.The control device 41 receives the fire door closing request signal S1, determines the sending timing of the fire door closing permission signal S2, and sends out the signal. A transport mode management unit 72 consisting of a latch circuit reset by SP, a current position counter 73 that receives the carrier detection signal CD and stores the current position of the carrier, and a carrier transport unit that is set at the start of transport based on a transport request. A destination position register 74 that stores the destination position, a fire door installation position register 75 that stores the position on the rail where the fire door is installed, a time/distance register 76 that stores the specified set time t1 and/or distance l1, and a stop control section 77.

Next, the operation of the motor car control device 41 will be explained.

First, when the fire door closing request signal S1 is input from the fire monitoring section 35, the judgment section 71 refers to the transportation mode management section 72, detects whether or not the carrier is being transported, and if it is not being transported. Based on this, a fire door closing permission signal S2 is immediately sent.

As a result of the judgment, if the mode management unit 72 indicates that the carrier is being transported, it refers to the current position counter 73, the target position register 74, and the fire door position register 75, and installs a fire door between the current position of the carrier and the target position. If there is no fire door between the target position and the current position, the fire door closing permission signal S2 is immediately sent based on the judgment.

As a result of the judgment, if a fire door exists between the current position and the destination position, calculate the time t2 required for the carrier to pass through the fire door from the current position of the carrier and the installation position of the fire door, and A comparison is made between the time t2 required for passage and the time t1 stored in the time storage section 76.

Alternatively, the distance m2 between the current position and the fire door installation position is calculated, and the distance m2 is compared in magnitude with the set distance m1 stored in the register 76.

As a result, when t2 < t1 or m2 < m1, that is, when it is determined that there is enough time to wait for the fire door to close until the carrier passes through the fire door, a predetermined time (this is approximately t1) is determined.
After counting is completed, or when it is confirmed by a carrier sensor that the carrier has passed through the fire door, a fire door closing permission signal is sent.

; As a result of the size comparison, it is determined that there is no time to wait for the fire door to close until the carrier passes through the fire door (t2>t1 or m2>
m1), the judgment unit 71 sends an emergency stop signal IS to the stop control unit 77, and also sends a fire door closing permission signal S2 at the same time as sending the signal IS, or changes the transport mode based on the carrier stop confirmation signal CT. After the management unit 72 confirms that the transport of the carrier has been completed, it sends out a fire door closing permission signal S2.

Note that the current position of the carrier may be obtained by the control device detecting the position of the carrier at the time when the fire door closing request signal is received, instead of being managed moment by moment by a counter or the like.

〔Effect of the invention〕

As described above, the transport control unit determines when to send the fire door closing permission signal by referring to all the states of the transport system, so the fire door is driven to close at the most appropriate time depending on the state of the transport system. be able to.

[Brief explanation of drawings]

1A to 1D are diagrams for explaining the principle of the present invention, FIG. 2 is a diagram for explaining an embodiment of the present invention, and FIG. 3 is a block diagram showing details of the conveyance control section. . In the figure, 1a, 1b, 21, 22...fire prevention compartments,
2, 23, 24... Conveyance path (rail), 3, 27
...Carrier, 8, 31, 32... Fire door, 7, 33, 34... Fire door drive unit, 5, 3
5... Fire monitoring section, 4, 41... Transport control section.

Claims (1)

[Scope of Claims] 1. A conveyance path 2 installed to connect at least two fireproof divisions 1a and 1b, a conveyance body 3 that moves under conveyance control on the conveyance path 2, and conveyance of the conveyance body 3. a conveyance control unit 4 that controls both fire protection compartments 1;
A fire door 8 is provided between the fire prevention compartments 1a and 1b, and is moved by the drive of the fire prevention door drive unit 7 to cut off the space between the two fire prevention compartments 1a and 1b, and a fire prevention door 8 is provided between the fire prevention compartments 1a and 1b. Fire detection signal S0 from the detector
Based on this, a fire door closing request signal S1 is sent to the conveyance control section 4, and when a fire door closing permission signal S2 is received from the conveyance control section 4, a fire door closing drive signal S3 is sent to the fire door driving section 7. In a fire prevention device in a conveyance system, the conveyance control section 4 includes a conveyance mode management section 10 that stores the conveyance body 3 being conveyed, and a position of the installed fire door 8. a storage unit 12 that stores the destination position of the conveyance body 3 to be conveyed; a storage unit 13 that stores the destination position of the conveyance body 3;
1 is received from the fire monitoring unit 5, a determination unit 9 is provided that refers to the transport mode management unit 10, the storage unit 12, and the storage unit 13 and sends a fire door closing permission signal S2 to the fire monitoring unit 5, When the judgment unit 9 receives the fire door closing request signal S1, it refers to the transport mode management unit 10 and immediately sends out the fire door closing permission signal S2 if there is no transport object 3 on the way to transport. When there is a conveyor 3 on the way,
With reference to the storage unit 13 and the storage unit 12, if the fire door 8 is not installed on the transport route from the current position to the destination position, a fire door closing permission signal S2 is immediately sent; When the door 8 is installed, the timing to send the fire door closing permission signal S2 is determined based on the current position and speed of the carrier 3 relative to the fire door position, and when it is determined that the carrier 3 can pass, the carrier 3 is closed. 3, the fire door closing permission signal S2 is sent out, and when it is determined that the conveyor 3 cannot pass, the conveyor 3 is controlled to stop and the fire door closing permission signal S2 is sent out. fire protection equipment in conveyance systems. 2. The fire prevention device in the conveyance system according to claim 1, wherein the time to send out the fire door closing permission signal S2 is determined based on the time calculated from the distance to the fire door 8 and the conveyance speed. 3. The transport according to claim 1, characterized in that if the distance to the fire door 8 is within a predetermined distance, a fire door closing permission signal S2 is sent when the transport body 3 passes the fire door 8. Fire protection equipment in the system.