JPH0268264A - Travel control system for electric carrier - Google Patents

Abstract

PURPOSE:To control the starting, stopping and passing of an electric carrier with only on-off control over a projector by making the projector have a floodlighting range covering to the extent of a rear end of the carrier, detecting and stopping somewhere short of a spot from a front end position of the detected plate detecting range of a proximity switch. CONSTITUTION:A light receiver 9 for a photoswitch negating a detected plate detecting signal of a proximity switch 3 is made to have a floodlighting range capable of covering a scope of up to a rear end of the stopping range of a carrier stopping, as the proximity switch 3 detects a detected plate 8, from a position ahead of a front end position where the proximity switch 3 detects this detected plate 8. In consequence, the carrier being traveled with only on-off control of a projector 4 for the photoswitch for a stop release command is stopped at a position of the stopping detected plate, and this stopped carrier is restarted, if circumstances require, the carrier can be run past as it is without stopping it. In addition, even when the projector 9 gets out of order, the carrier is stoppable at the stop position without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a travel control system for a transport train that travels on its own along a travel route.

(Prior Art) This type of transport train is controlled to selectively stop at each station run set in the running route or before a branching/merging route. For running control, a detection plate is disposed at each stop position so that it can be switched between an active position and a non-operative position, and each train is equipped with a proximity switch that detects the detection plate. The train is automatically stopped when the proximity switch detects the detection plate, and the stopped train is started by switching the detection plate to a non-operating position and turning the proximity switch off. was.

(Problems to be Solved by the Invention) In the conventional configuration as described above, not only is an actuator for switching the detected plate between the active position and the non-active position required, but also the detected plate can be switched between the active position and the non-active position. Two glue switches are also required to confirm that the actuator has switched, which not only increases costs due to the large number of parts involved, but also requires a stop switch if the detected plate does not return to the operating position due to actuator failure. There was also the risk that trains without stopping would continue to run through the area without stopping, leading to an accident.

(Means for Solving the Problems) In order to solve the conventional problems as described above, the present invention has the following features:
A stop detection plate and a photoelectric switch floodlight for issuing a stop release command are installed at the train stop position on the running route, and the train can detect the stop detection plate by detecting the stop detection plate. A stop proximity switch that stops traveling; and a photoelectric switch light receiver that receives the light beam from the light emitter and cancels the detected board detection signal of the proximity switch. Traveling of a transport train having a light projection range that can cover the range from a position further in front of the front end position to be detected to the rear end of the stop range of the train where the proximity switch detects the detected plate and stops. This paper proposes a control system.

(Operation of the invention) Unless the photoelectric switch floodlight for the stop release command is in the light emitting state, the running train will automatically stop at the stop position when the stop proximity switch detects the detection plate. I will do it.

When detecting the detection target plate and starting a stopped train, the light emitter is switched to the light emitting state.As a result, the light receiver of the stopped train receives the light beam from the light emitter, and the light beam from the light emitter is detected. Since the detected plate detection signal (stop signal) of the proximity switch is canceled, the train automatically starts. If the proximity switch passes through the rear end position of the range in which the detection target plate can be detected, the train that has started will not stop even if the floodlight is turned off.

If you do not want the train to stop at the stop position, by turning on the light source before the train arrives at the stop position, the photoelectric switch can be activated before the train's proximity switch detects the detection board. Since the light receiver receives the light beam from the light projector and cancels the detected plate detection signal (stop signal) while the proximity switch passes in front of the detected plate,
It is possible for the train to pass without stopping. At this time, the light projector may be maintained in the light projecting state until the proximity switch passes through the rear end position of the range in which the detection target plate can be detected.

Even if the floodlight fails, the proximity switch detects the detection plate and the train will always stop at the stop position, so there is no danger of the train continuing to pass and causing an accident.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In Fig. 1, 1 is a transport train that runs on its own along a guide rail 2, and has a proximity switch 3 for stopping, a light receiver 4 for a photoelectric switch for canceling a stop, and transmits information such as a failure stop. A transmitter 5 and a speed change code reader 6 are provided. At the station 7 set on the running route of the train 1, a stop detection plate 8, a charge switch floodlight 9 for canceling the stop, a low speed command code board 10, and a medium speed command code board 11 are arranged. A high speed command code board 12 is disposed immediately after the station 7. or,
The running route of the electric train 1 is long enough that a worker can see it at a glance without being affected by surrounding obstacles, for example, 10 to 30 minutes long.
It is divided into sections with a length of about m, and antenna wires for receiving wireless signals (for example, parallel wire feeders for television) 13 are stretched along the guide rail 2 for each zone. Receivers 14 that receive the signals transmitted by the transmitter 5 are connected to each other through the antenna wires 13, and train information for each zone is identified from the signals received by the receivers 14 and displayed on the display means 15. A sequencer 16 is provided.

As shown in FIGS. 2 and 3, the transport train 1 includes:
A driving trolley 21 including a driving wheel 17, a steady rest roller 18, a motor 19 for driving the driving wheel 17, and a current collecting unit 20; a driven trolley 24 including a driven wheel 22 and a steady rest roller 23; , a connecting member 25 that connects both trolleys 21 and 24, and a conveyed object support stand 26 suspended from this connecting member 25, and the guide rail 2 is of a molar rail type with a ■-shaped cross section. A power supply rail 27 is installed on the negative side.

Both trolleys 21 and 24 have bearing members 25a attached to both front and rear ends of the connecting member 25.

Both bearing members 25a are rotatably connected to 25b around a vertical support shaft 28 (see FIG. 4).

Bumpers 30a and 30b are attached to 25b via support members 29a and 29b so as to protrude further forward and rearward than both trolleys 21.24. This bumper 30a, 30b may be attached to both trolleys 21.24.

As shown in FIGS. 2 and 4, a bracket 31 extending forward is attached to the front bumper support member 29a, and a photoelectric switch light receiver 4 for canceling the stop is attached to the bracket 31. , Proximity switch 32 for preventing rear-end collision
, a reflective photoelectric switch 33 for preventing rear-end collisions is attached. A rear collision prevention detection plate 34 extending rearward is attached to the rear bumper support member 29b, and when the front and rear transport trains 1 approach within a certain distance, the rear end of the detection plate 34 is attached. The proximity switch 32 for preventing a rear-end collision of the following train faces the upper side, and the proximity switch 32 detects the detection target plate 34. Further, at the base of the detected plate 34, there is a vertical collision prevention reflective surface 35 that can be detected by the rear collision prevention reflective photoelectric switch 33 of the following train before the proximity switch 32 detects the detected plate 34. is formed.

The stop proximity switch 3 and the transmitter 5 that transmits information such as failure and stop are attached to a bracket 36 that projects laterally from the drive trolley 21, as shown in FIGS. 3 and 5. It is being Moreover, the antenna wire 13 is
An adhesive tape 37 is attached to the side surface of the guide rail 2 opposite to the side on which the power supply rail 27 is installed, and specifically, as shown in FIG.
It is housed in a groove-shaped case 38 for laying a telephone line, which is attached to the telephone line.

The speed change code reader 6 includes a bracket 39 attached to a portion near the front end of the connecting member 25, as shown in FIG.
It is attached to the upper end of the guide rail 2 so as to be located directly below the guide rail 2. As shown in FIGS. 6 and 7, each of the code plates 10 to 12 read by the code reader 6 has a base plate 40 in contact with the lower surface of the guide rail 2, and a base plate 40 in contact with the lower surface of the guide rail 2, as shown in FIGS. A nareto plate 42 that fits into a mounting groove 41 continuously formed in the length direction of the rail;
It is composed of a fixing screw 43 that fastens the board 40 and the nut plate 42, and tape-shaped rubber magnets 44a and 44b bonded to the lower surface of the board 40 in parallel to the rail length direction. By relaxing 43, the position of the guide rail 2 can be freely adjusted in the length direction. Note that the board 40 is formed with a rotation-preventing bent portion 40 a that abuts one side of the guide rail 2 .

In the example shown in FIG. 1, the low-speed command code board 10 has a rubber magnet 44a bonded only to the right side of the board 40, and the medium-speed command code board 11 has rubber magnets 44a bonded only to the left side of the board 40.
4b, and a high-speed command code board 12.
Rubber magnets 44a and 44b are bonded to both left and right sides of a substrate 4o. As shown in FIG.
It is composed of a pair of left and right magnetic proximity switches 6a and 6b that detect the magnetic proximity switches 4a and 44b separately.

As shown in FIG. 3, the detection plate 8 for stopping and the photoelectric switch floodlight 9 for releasing the stop are attached to the guide rail 2, respectively. - Attached via 45 and 46. 47 is a bracket that supports the guide rail 2.

As shown in FIG. 8, the transport train 1 includes the stop proximity switch 3, the photoelectric switch light receiver 4 for canceling the stop, the rear collision prevention proximity switch 32, the rear collision prevention reflective photoelectric switch 33, and each magnetic proximity switch 6a of the speed change code reader 6.

Based on each detection signal of 6b, the motor controller 4
A controller 49 (sequencer, microcomputer, etc.) that controls the motor 19 via the controller 8 and the transmitter 5 is mounted. FIG. 9 is a circuit diagram showing the conditions under which the controller 49 outputs a stop command to the motor controller 48, in which the normally open contact 3a of the stop proximity switch 3 and the photoelectric switch for canceling the stop are connected to each other. The normally closed contact 4b of the light receiver 4 and the stop electromagnetic relay 50 are connected in series, and the normally open contact 32a of the collision prevention proximity switch 32 is connected to the series circuit of the normally open contact 3a and the normally closed contact 4b. are connected in parallel. In addition, the stop proximity switch 3 is connected to the stop detection plate 8.
The self-holding contact 50a of the stop electromagnetic relay 50 is configured to stop the train 1 even in an overrun state when the stop electromagnetic relay 50 comes off.
can also be connected in parallel to the normally open contact 3a of the stop proximity switch 3. By energizing the stop electromagnetic relay 50, a stop command is output to the motor controller 48.

Next, to explain the operation of the above embodiment, the controller 4
9, the motor 19 is operated by electric power supplied from the power supply rail 27 via the current collection unit 20 and the motor controller 48, the drive wheels 17 are rotationally driven, and the transport train 1 is moved to the guide rail 2.
run along. When this train 1 arrives at station 7, first, the speed change code reader 6 reads the medium speed command code plate 11, and the controller 49 determines that the medium speed command is from the on/off state of the magnetic proximity switches 6a and 6b. , outputs a medium speed command to the motor controller 48. Therefore, when the transport train 1 is traveling at high speed, it is decelerated to medium speed. Next, the speed change code reader 6 reads the low speed command code plate 10, whereby a low speed command is given to the motor controller 48, and the traveling speed of the transport train 1 is decelerated to a low speed. When the stop proximity switch 3 detects the stop detection plate 8, the stop electromagnetic relay 50 shown in FIG. 9 is energized, the controller 49 outputs a stop command to the motor controller 48, and the motor 19 stops. Then, the transport train 1 stops at station 7.

When starting the electric train 1, the photoelectric switch floodlight 9 for canceling the stop is energized to emit light.

However, when the light beam from the light projector 9 was received by the light receiver 4 of the train 1, the normally closed contact 4b shown in FIG. Power supply to the motor 19 of the electric train 1 is restarted, and the electric train 1 starts. The floodlight 9 extends from a position further in front of the front end position of the detection range of the detection target plate of the proximity switch 3 to the rear end of the stop range of the train 1 where the proximity switch 3 detects the detection target plate 8 and stops. Train 1 stops because it has a lighting range that can cover the entire area.
Even if the position of is shifted back and forth within the permissible range, a command to cancel the stop can be reliably given to the electric train 1.

Furthermore, when it is desired that the train 1 is allowed to pass without stopping at the station 7, the light source 9 for the photoelectric switch for canceling the stop is energized and emitted before the train 1 arrives. Since the light receiver 4 receives the light beam from the light emitter 9 before the stop proximity switch 3 detects the stop detection plate 8, the normally closed contact 4b in FIG. 9 closes before the normally open contact 3a closes. Since the stop electromagnetic relay 50 is opened and the stop electromagnetic relay 50 is prevented from being excited, a stop command is not output. That is, the train 1 will pass through the station 7 at a low speed. Note that the photoelectric switch light projector 9 is continuously energized and emitted at least until the train 1 reaches a position where the proximity switch 3 is removed from the stop detection plate 8.

When the train 1 starts from station 7, the speed change code reader 6 reads the high speed command code board 12, and the controller 49 outputs a high speed command to the motor controller 48, causing the train 1 to accelerate to a high speed. After that, the vehicle will drive at high speed.

When the running train 1 stops mid-way due to a malfunction or the like, the controller 49 detects this situation and instructs the transmitter 5 to issue an abnormal stop signal. The abnormal stop signal transmitted from the transmitter 5 is received by the receiver 14 of the zone to which the stopped train 1 belongs via the antenna line 13, and is transmitted to the sequencer 16. The sequencer 16 determines in which zone the abnormal stop has occurred, and the content thereof is displayed on the display means 15. Therefore, the manager can immediately dispatch a worker to the corresponding zone based on the display contents of the display means 15, and can take necessary measures for the abnormally stopped train 1.

When a following train 1 approaches within a certain distance of a train 1 that has stopped due to a breakdown or a train 1 that has stopped on a storage line, the reflective photoelectric switch 33 for preventing rear-end collisions of the following train 1 will stop the train 1 in advance. Since the reflective surface 35 of the train 1 is detected, the controller 49 outputs a low speed command to the motor control I roller 48 based on the detection signal of the photoelectric switch 33, and after that 'II! tii vehicle 1 is switched to low speed driving. When the following train 1 further approaches the preceding stopped train 1, the proximity switch 32 for preventing a rear-end collision of the following train 1 is activated by the detected plate 34 for preventing a rear-end collision of the preceding stopped train 1.
Since the controller 49 detects the detection signal of the proximity switch 32, the motor controller 4
A stop command is output to train 8, and the following train 1 is automatically stopped before it collides with the preceding stopped train 1.

Incidentally, the travel control system of the present invention using the stop detection plate 8 and the photoelectric switch floodlight 9 for canceling the stop is as follows:
It can also be carried out at the entrance of a train occupancy monitoring zone, such as a curved route section or a branch/merging route section, where if a preceding train is present, it is necessary to stop the following train without allowing it to enter.

(Effects of the Invention) As described above, according to the present invention, a running train can be stopped at the position of the stop detection plate or stopped simply by controlling the on/off of the photoelectric switch floodlight for the stop release command. It is possible to start a train, or in some cases, to let a train pass without stopping. Moreover, even if the floodlight fails, the proximity switch detects the detection target plate, so the train will always stop at the stop position, and there is no risk of an accident if the train continues to pass. Since an actuator for switching the position of the plate and a rim switch for confirming the switching position are not required, the number of parts can be reduced and implementation can be carried out at low cost.

[Brief explanation of the drawing]

Figure 1 is a schematic block diagram explaining the overall configuration;
The figure shows the side entrance showing the specific structure, Figure 3 is a longitudinal front view of the same, Figures 4 and 5 are cross-sectional plan views of the same, Figure 6 is an enlarged longitudinal sectional front view of the main parts, and Figure 7 is the bottom view of the same. Figure 8 is a block diagram explaining the control system, and Figure 9 is a circuit diagram explaining the stop control conditions.Current collecting unit, 21... Drive trolley,
24... Driven trolley, 27... Power supply rail, 30
a, 30b...Bumper, 32...Proximity switch for preventing rear-end collision, 33...Reflective photoelectric switch for preventing rear-end collision,
34...Detection plate for preventing rear-end collision, 35...Reflecting surface, 4
4a, 44b... tape-shaped rubber magnets. 1... Transport train, 2... Guide rail, 3...
Proximity switch for stop, 4... Receiver for photoelectric switch for canceling stop, 5... Transmitter, 6... Code reader for speed change, 7... Station, 8... Cover for stop Detection plate, 9... Floodlight for photoelectric switch for canceling stop, 10-12... Code plate for speed change, 13... Antenna wire, 14... Receiver, 15... Display means, 16・
...Sequencer-117...Drive wheel, 19...Motor, 20...Figure

Claims (1)

[Claims] A travel control system for a transport train that runs on its own along a travel route, wherein a stop detection plate and a photoelectric switch floodlight for issuing a stop release command are arranged at a train stop position on the travel route. , the train includes a stop proximity switch that stops the train by detecting the stop detection board, and a photoelectric sensor that cancels the detection board detection signal of the proximity switch by receiving the light beam from the floodlight. and a light receiver for a switch, and the light emitter is located at a position further in front of the front end position of the detection range of the detection target plate of the proximity switch, and after the stop range of the train where the proximity switch detects the detection target plate and stops the train. A travel control system for a transport train that has a light projection range that can cover the entire range.