JPS6146104A - Operating apparatus of carrier in line - Google Patents

Abstract

PURPOSE:To prevent carriers from colliding each other due to an abnormal operation by stopping the following carrier when the following carrier enters into the same section trolley wire where the preceding carrier is stopped. CONSTITUTION:When a drive motor 34 is started to allow the first carrier A to abnormally start so that a current collector 14A overrides a section poit 5a into the second section trolley wire 4b, a circuit W of the first powe supply trolley wire 1, a current collector 11A, a control relay 20, a current collector 14A, the second section trolley wire 4b, a current collector 14B, the control relay 20, a current collector 12B and the second power supply trolley wire 2 is formed. When the relay 20 is energized, a relay for operating the drive motor is deenergized to stop the motor 34, and the first carrier A automatically stops driving.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a device in which a plurality of carriers self-run in a line on the same rail, and relates to a device for preventing collisions between the carriers.

<Prior Art> An example of a device in which a plurality of self-propelled carriers run in line on the same rail is a vehicle carrier device as shown in Japanese Patent Publication No. 59-8575.

like this? In the c-mounting system, multiple carriers with electric motors for traveling are suspended from traveling rails installed overhead, and each carrier moves intermittently to multiple work stations set up at predetermined intervals. is formed. Cars to be inspected and maintained are placed on each carrier, and the cars are lined up in one line, making a circuit around each work station, and then sent out after completing the entire work process.

This procession is centrally controlled by the main controller so that it moves orderly and sequentially.Also, when moving one of the carriers manually, if there is a preceding carrier at an adjacent station, The control circuit prevents the carrier from starting manually, and is generally configured to prevent collisions between the carriers.

<Problems to be solved by the invention> However, when carriers are traveling simultaneously, the preceding carrier suddenly stops traveling due to a failure, or when the carrier is stopped at a station, the control circuit is affected by external noise, etc. If any of the carriers starts abnormally due to abnormal operation, the carriers may collide with each other, damaging the car on which they are placed or causing an unexpected disaster.

In order to prevent such collisions in a traveling object such as a crane, there are eight collision prevention systems using ultrasonic waves or optical sensors (for example, Japanese Patent Application Laid-open No. 157691/1982). However, although these devices are effective between traveling bodies on a traveling rail with relatively little bending, it is difficult to detect adjacent carriers with the above-mentioned device having a traveling rail bent in a U-shape. , and the height of the car placed on the carrier from the floor.
The large variations from work station to work station make it even more difficult to detect adjacent carriers and mounted vehicles.

Therefore, the conventional collision prevention device as mentioned above.

It has a running rail bent in a U-shape, and is not suitable for a carrier matrix and four-turn device for positioning and moving automobiles and the like.

Means for Solving the Problems The present invention has been made in consideration of the above points, and will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the basic concept of the apparatus of the present invention.

In the figure, carriers A, B, and C are self-propelled on the same rail, and the carrier matrix operation device is configured so that each carrier stops at a predetermined station and moves sequentially. , 5c, a control trolley wire 4 electrically divided into sections equal to the number of stations;
The carrier has a control trolley wire 4 and a power supply trolley wire 1.
．． A control relay 20 is connected between any one of the carriers 2 and 3, and the control relay 20 is connected to a different power supply trolley wire for each adjacent carrier,
The carrier matrix operating device is configured so that when the control relay 20 is energized, the power supply circuit of the traveling motor is opened in order to stop the carrier from traveling.

Effect〉 Next, its effect will be explained.

First, it is assumed that the first carrier A is located in the illustrated position, that is, on the first segmented trolley line 4a of the control trolley line, and that the second carrier B is located on the second segmented trolley line 4b. It is assumed that there is

In this state, the control relay 20 of the first carrier A is in a de-energized state due to no power being supplied, and external electrical noise or the like may intrude into the control circuit, causing the traction motor operating relay to malfunction. When the motor 34 is energized, the traveling electric motor 34 starts and the first carrier A starts abnormally. Enter on line 4b.

At this time, the first power supply trolley &lt → collector 11A → control relay 20 + collector 14A → second segmented trolley wire 4b → collector 14B → control relay 20 → East Electronics 12B
→The circuit W of the second power supply trolley wire 2 is formed. The control relay 20 is then energized and its normally closed contacts formed within the control circuit are opened. Correspondingly, the traveling electric motor activation relay is deenergized, the traveling electric motor 34 is stopped, and the first carrier A automatically stops traveling.

<Embodiment> FIG. 2 is a circuit diagram showing an embodiment of the present invention. In FIG. 2, 1, 2.3 are connected to a three-phase power supply. Second.
The third power supply trolley line 4 is a control trolley line whose entire section is divided equally into the number of work stations, and the division point 5
electrically divided at a, 5b, 5c, 4a,
4b, the first consisting of 40. Second. A third segmented trolley line is formed.

A, B, and C are the first and second trains running in queue on the same running rail.
．． The third carrier, ILA, 12A, 13A is a power supply trolley wire, a current collector in contact with 2.3, 14A is a current collector in contact with the control trolley wire 4, 20 is a connecting wire 21 connected to the current collector 11A. A control relay 20a connected to the collector 14A is a normally closed contact of the control relay 20.

Furthermore, 32 is a travel stop switch, 31 is a travel command switch connected in series to this travel stop switch 32, and 30
33 is a manual return contact connected in series to the operating relay 30. The manual return contact 33 is further connected to the connecting wire 21.
It is connected to the collector 11A. Further, the running stop switch 32 has one end connected to the current collector 1 via the connecting wire 22.
Connected to 3A.

Reference numeral 30a denotes a normally open contact of the relay 30, which is connected in series with the normally closed contact 20a and in parallel with the travel command switch 31.

34 connects the first . Second. Third. connected to the power supply trolley wires 1, 2.3 of
The traveling electric motor to be energized, 30b is a normally open contact of the operating relay 30. When the circuit is closed, the traveling electric motor is energized and the first carrier A runs on the traveling rail, and when the circuit is opened, the first carrier A is energized. Traveling of carrier A is stopped.

Second. Since the third carriers B and C have approximately the same configuration as the first carrier A, the suffixes of the current collectors will be replaced with the carrier numbers, and other identical components will be given the same numbers. The explanation will be omitted.

In the second carrier B, one end of the connection &121 is connected to the second power supply trolley wire 2 via the collector 12B, and one end of the connection wire 22 is connected to the first power supply trolley wire 2 via the collector 11B.
is connected to the power supply trolley wire l.

In the third carrier C, one end of the connection line 21 is connected to the third power supply trolley line 3 via the collector 13C, and the connection line 22 is connected to the first power supply trolley line l via the collector 11C. It is connected to the.
1. If the connection wire 21 is a different power supply trolley wire for each adjacent carrier,
It may be connected to any power supply trolley wire, and the same applies regardless of whether the traveling rail is circular or non-circular.

Further, the connection line 22 may be connected to any power supply trolley line other than the connection line 21 of the carrier.

Note that the present invention is not limited to the use of three carriers as in the above embodiment, but can also be applied to cases where two or four or more carriers are used.

In addition, when the number of carriers is even, the power supply trolley wire to which the connection line 21 is connected is one of the power supply trolley wires 1, 2, 3,
By using any two trees, it is possible to form connections to different power supply trolley lines for each of the above-mentioned adjacent carriers.

2, this invention is not limited to the above description and illustrated examples, and its embodiments can be changed without departing from the technical idea of this invention.

Effect> The present invention is configured as described above, and when a connecting carrier enters the same segmented trolley wire where the preceding carrier is stopped, the control relay of the succeeding carrier is energized, and the carrier 1) Since the traveling of (a) is stopped, even if the leading carrier is located on the other side of the U-shaped bent traveling rail, and regardless of the height position of the vehicle placed on the carrier, , it is possible to detect the presence of a preceding carrier and automatically stop the following carrier, completely preventing collisions between carriers due to abnormal operation.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic concept of the invention, and FIG. 2 is a circuit diagram showing an embodiment of the invention. l...First power supply trolley line, 2...Second power supply trolley line, 3...Third power supply trolley line, 4...Control trolley line, 4a...First segmented trolley line, 4b
... Second segmented trolley wire, 4c... Third segmented trolley wire, 5a, 5b... Segment point, 2o... Control relay, IIA, 12A, 13A, 14A, IIB. 12B, 13B, 14B... Current collector, A... First carrier, B... Second carrier. Patent application Hitotoyo Kogyo Co., Ltd.

Claims (1)

[Claims] A carrier matrix driving device in which a plurality of carriers self-propelled on the same rail stop at predetermined stations and move sequentially, the carriers having a control trolley wire electrically divided into sections equal to the number of stations, and a control trolley wire connected to the carrier. and a control relay connected between the carrier and the power supply trolley wire, and the control relay is connected to a different power supply trolley wire for each adjacent carrier, and the control relay is energized. 1. A carrier matrix driving device characterized in that traveling of said carrier is stopped at a certain time.