JPS6027247B2 - Power control system for traveling objects using single-phase AC power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system for controlling the running of a traveling body by power control using an AC power supply, and in particular uses a single-phase AC power supply without using three-phase AC power, and uses only two contact wires. The aim is to enable power control of the traveling body when used.

Track circuit signaling systems and other methods are used to control the running of running vehicles, which is known from the field, but this requires equipment for signal control in addition to the mains electric system, making it expensive and complicated. be.

Therefore, we conducted research on power control systems, and have already developed a 3-wire system using a DC electric trolley that uses a DC motor for the running body, a 4-wire system using a 3-phase AC trolley, and a 3-wire system using a single-phase AC trolley. We have been considering control methods. However, these methods require three wires even when the contact wire is a single-phase AC power supply, which not only increases the cost, but also satisfies the demand for simplifying the entire system. It is not.

In view of the above points, the present invention uses a single-phase AC power supply, which eliminates the need for three lines in the past.

By energizing the IJ line so that a single-phase AC half-wave current is fed to the diachronic power circuit, the number of contact wires can be reduced, and the configuration of the power circuit and the power circuit of the traveling body can be simplified. This will be described in detail below with reference to an embodiment shown in the drawings. First, the configuration of the power supply circuit is such that along the trajectory of the traveling body M, a single-phase AC power supply electric wire F, a segmented contact wire T for the single-phase AC power supply, and a contact wire To are provided. The line T is electrically insulated and divided into predetermined closed sections T, T2, L, L, etc. by insulation dividing devices G,, G2, G3, etc. using air gaps, for example.
Furthermore, the single-phase AC electric wire F and the sectional contact wire T are divided into adjacent closed section sections T, , T2, T.
Between 3 and T4..., each division's electric equipment SP
,, SP2, SP3, . . . are inserted and connected.

Further, iron wheels may be used for the trolley wire To running body, and when rails are used, rails may be used. In the illustrated embodiment, the divided electrical equipment SP, SP2, SP3, . . .
, diodes D, . , D2,, D3, . . . are connected in series with the electric current coils 1, 12, 13, . The current relay coils 1, 12, 13, . . . are arranged between the closed sections T, L, L, . The normally closed relay contacts S, , S2, S3, . . . formed by the excitation of the diodes D, . , D2, , D, . . . are connected in series with diodes D, 2, D base, D32, . Note that here the diode D,2
, D2, D32, . . . may perform the same operation without using them, depending on the circuit conditions.

Of course, the above-mentioned current relay coils 1, 12, 13...
This classification electrical equipment can be constructed by non-contact relays such as current control silicon elements (SCR) without using...
Other desired circuits may be used, and in order to reduce the size of the current relay, a two-stage switch configuration may be used.

Next, the power circuit of the traveling body M, its collectors P,, P2,
. The first series circuit SC and the second series circuit SC2 are connected in parallel.

The first series circuit SC is composed of a current relay coil i, a diode d, a braking current relay coil i2, and a diode. ...
It is connected with the same polarity as the diodes D, 2, D22, D32, . . . .

On the other hand, the second series circuit SC2 has a polarity opposite to that of the diodes d, .
(same polarity as...) the two diodes are connected to the current collector P
, a normally open relay contact s, which is arranged in series as -q from the side, and is further opened by excitation of the current relay coil i,
It is configured by connecting.

Furthermore, this power circuit is provided with a braking circuit 8C of the braking device B, and this braking circuit BC is connected to the negative side of the diode d, the negative side of the diode d, and the relay formed by the excitation of the braking current relay coil i2. It is formed by a normally closed contact s2, a braking electromagnetic coil f, and a current collector P2, and due to the excitation of the electromagnetic coil f, the braking electromagnet M of the braking device B is pressed against the braking plate BP provided along the track. Braking of the traveling body M is performed.

The braking device B shown here is an example of a non-contact type brake, and any suitable device may be adopted, such as a non-contact type electromagnetic brake or a hydraulic brake actuated by an electric current, which will be described later, flowing through a braking circuit BC. Can be done.

Therefore, in the case where the power control according to the present invention is performed by the above-mentioned control system, the traveling body M currently traveling in the blocked section T2
, will be described in detail. First, as shown in the figure, if there is a preceding running body in the blocked section m3 which is adjacent to and ahead of the blocked section L, the diode D2 of the single-phase AC power line F-SP2 , one SP2 military style relay coil 12-blocked section T3
-M2 current collector P, - diode d3 - diode d,
- closed relay normally open contacts s, - motor m - collector P2
- Since the current relay coil 12 is excited by the half-wave electric current generated by the contact wire To, the relay's normally closed contact S
2 are involved.

As a result, in the blocked section T2 where the traveling body M exists,
Contact wire To-M, collector P2 - motor m - leakage relay coil j, one diode d, one braking current relay coil i2 - diode d2-M, collector P, one blockage section T2, one section key electric equipment The circuit of relay normally open contact S2 of SP2, diode D22, and fist-phase AC power supply wire F is opened by the opening of the contact S2 as described above, and the half-wave current due to diode D22 no longer flows.

Therefore, the excitation of the electric current coil i, is released and the normally open contact s of the relay is opened, and therefore the diodes D, . - The half-wave current flowing into the current relay coil 1, one blockage section T2-M, current collector P, and one diode d3 does not flow into the motor m, and the motor m loses its driving force. Current will flow into the braking circuit BC from the diode d3.

At this time, current relay coil i2 for braking the traveling body M.
is not excited, and the normally closed contact s2 of the relay is on, so the current flowing into the braking circuit BC (the half-wave caused by diode 02 is eliminated and the single-phase AC current is transferred from the single-phase AC current to the diode D, ．The DC power is generated by only half-waves caused by the oscillator.

), the braking coil f is excited, and the braking electromagnet BM attracts or adsorbs and presses against the braking plate BP, and at this time, the electric motor m of the traveling body M is driven as described above only by rotating in a no-load state. Since it has no force, it is possible to brake the traveling body M. Next, if the leading vehicle M2 moves forward and enters the blocked section T, in front of it, the lightning current will no longer flow through the lightning current relay coil 12 of the segmented electrical equipment SP2, so the normally closed contact S2 of that relay will stop flowing. is opened, and the running body is divided into diode D and diode D of electrical equipment SP. The area will receive AC electricity from the area.

Therefore, the above-mentioned L-P2-m-i, 1d, 1i2-
p, - T2-S2 - D22F is closed, which also causes said F-D, . -1,1T21P,mu-d41s,1m
-P2-To is also closed, and the electric motor m returns to normal operation, and the relay's normally closed contact s2 is opened by the excitation of the braking turtle flow relay coil i2, and the braking circuit BC is involved, and the braking electromagnet BM The suction or suction pressing against the brake plate BP is released, and the traveling body M moves forward in the same state as the preceding traveling body shown in the figure. As embodied by the above-described embodiment, the present invention collects condensation from a power supply means such as one segmented contact wire T and one trolley wire To or a rail, and prevents blockage in the adjacent forward direction of the segmented contact wire in the traveling direction. If there is no leading traveling object M2 in the section, a half-wave electric current generated by the response of the forward section electric equipment SP2 of the traveling object M, and another half-wave electric current generated by the rear section electric equipment SP. , the electric motor m of the traveling body M is run by a single-phase AC power supply, but when there is a preceding traveling body M2, the above-mentioned half-wave lightning current from the front segment power supply equipment SP2 is cut off, and the vehicle runs thereby. By responding to the power circuit of the body M, the drive of the electric motor m is released, and only the electric current generated by the other half wave from the rear section electric equipment SP is supplied to the power circuit. Since the braking device of the same circuit is operated by DC power supply using wave rectification, only two wires, the sectional contact wire and the power supply means, can ensure normal operation of the traveling body and automatic blockage of the traveling body due to the presence of a preceding traveling body. Therefore, it is possible to reduce the number of contact wires by one line, thereby reducing construction costs, and by making the running body itself smaller and lighter, it is possible to realize blockage control. Since both the circuit and the power circuit can be simplified, the whole system can be simplified, and it is superior to the single-phase AC three-wire system in terms of maintenance costs and operating costs, and highly reliable control can be performed at low cost.

[Brief explanation of drawings]

The figure is a wiring diagram showing an embodiment of a single-phase AC power circuit and a traveling body power circuit attached thereto, which can be used to implement the power control method according to the present invention.

Claims (1)

[Scope of Claims] 1. In a method of controlling a traveling body by power control using a single-phase AC mains electric power, one segmented contact wire with insulation sectioned at each predetermined closed section along the trajectory of the traveling body, and an insulated A means for supplying power to a traveling body that is not classified is provided, and a classification power supply equipment is provided between the single-phase AC power supply wire and the classification contact wire, and an insulation section is provided at both ends of each closed section of the classification contact wire from the electric wire. Always supply single-phase AC half-wave power to one of the points.
Depending on the presence or absence of this half-wave current, the other half-wave currents are connected intermittently to the segmented contact wire adjacent to the rear in the traveling direction of the traveling body, and in one closed section formed by the segmented contact wire, When a running body collecting current from the segmented contact wire has no preceding running body in the blocked section adjacent to and in front of it in the direction of travel,
The electric motor provided in the power circuit of the traveling body is powered by the half-wave of the constant power supply and the other half-wave electric current generated by the response from the segmented power supply equipment in front of the traveling body in the traveling direction. When the vehicle is driven by a phase alternating current power supply and there is a preceding traveling object, the drive of the motor is released by cutting off the other half-wave power current from the front section power supply equipment and responding to the power circuit. , so that only the electric current generated by the half-wave of the above-mentioned constant electric current from the segmented electric equipment at the rear in the traveling direction of the traveling body is supplied to the same circuit, and the braking device of the circuit is operated by the electric current generated by the half-wave. A power control system for a running body using a single-phase AC power supply, characterized in that the running of the running body is controlled. 2 Classified electric power equipment connects a single-phase AC power supply electric wire and a classified contact wire by connecting a diode and a current relay coil in series for each closed section, and connects a half-way through the current relay coil to the traveling body. A normally closed contact of the relay, which is opened by a wave electric current, is connected between the sectional contact wire of the closed section adjacent to the rear of the closed section and the single-phase AC power line, opposite to the diode. A power control system for a running body using a single-phase AC power supply as claimed in claim 1, wherein a polarized diode is connected in series. 3. The power circuit of the traveling body consists of a first series circuit consisting of a current relay coil, a diode, a braking current relay coil, and a diode, through which a half-wave current flows through which the motor is driven when single-phase AC power is applied, and a constant current relay circuit that drives the motor. The diode through which a half-wave current from the current relay flows flows, two diodes of opposite polarity in series, and a second series circuit of normally open relay contacts that are closed by the current from the current relay coil are connected in parallel, and for the braking purpose. A single-phase relay according to claim 1, wherein a normally closed contact of a relay that is opened by a current of a current generator coil is inserted into a braking circuit of a braking device through which the current flows when direct current is generated by half-wave rectification. A power control system for running bodies using AC power.