JPS6243405B2 - - 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, 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, it is based on the prior art (Japanese Patent Application Laid-Open No. 54-37702, single-phase AC power supply without using three-phase AC power). We have further developed the electric power control system for traveling objects (by the ``Electric Power Control Method for Traveling Vehicles''), and in particular, we have developed ``automatic control of the passing of traveling objects traveling in different directions on the same track, and automatic control of the running of vehicles traveling in one direction in the other direction.'' The invention relates to a power control system for a traveling object that enables automatic control for starting the vehicle in priority to the traveling object.

Traditional railways that have been known for a long time use track circuits, axle counters, treaddles, etc. to detect trains, and control signals are sent to the trains based on the information about the detected trains. , signal and safety systems will be installed separately from the electricity system, and the equipment costs will be high.
The system is also becoming more complex.

Therefore, we conducted research on power control systems, and have already developed a 3-wire DC electric trolley system that uses a DC motor for the running body.
We investigated control systems using AC mains power, such as a three-phase AC trolley, four-wire system, and a single-phase AC trolley, three-wire system, and succeeded in unifying the mains system, signals, and safety systems.

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 does not fully satisfy the demand for simplifying the entire system. It has not become a kimono.

Therefore, by using a single-phase AC power supply, the contact wire, which conventionally required three wires, was changed to allow single-phase AC half-wave sine wave power to be supplied to the power supply circuit at the appropriate time.
We have also considered ways to eliminate one contact wire, simplify the configuration of the main electric circuit and the power circuit for the running body, and implement highly reliable control at a low cost, and we have already achieved results. One of them is the prior art (Japanese Patent Laid-Open No. 54-37702).

In the present invention, it is an object of the present invention to develop the above-mentioned study results to make it possible to drive vehicles passing each other on a single track, and to automatically perform blockage control of the vehicles.

To explain this in detail with reference to the illustrated embodiment, R in the figure indicates the trajectory of the traveling bodies M ₁ to M ₄ , ST ₁ to _{ST 5} indicate their stops, and first, the configuration of the main electric circuit is based on the above trajectory R. A high-voltage single-phase AC distribution line F, a segmented trolley wire T for single-phase AC power supply, and a return trolley _T0 are installed along the track _R. When a conductive track system such as iron wheels and rails is used as in a railway, the track may be used.

So, for convenience of explanation, go up the right side of the drawing.
The left direction is designated as downhill, and the figure shows an example in which the traveling body turns around at stops ST ₁ and ST ₅ on both the left and right ends of the same track, but as mentioned above, the purpose of the present invention is to Since this is related to a power control system for running bodies that enables automatic control of passing operations of running bodies in , 〓, one end can be folded back and the same trajectory can be used.

Furthermore, even if the track is an endless ring, a predetermined stop can be used as a turnaround station.

The divided contact line T has a crossing point where the up line t ₁ and the down line t ₂ are branched, corresponding to the stops ST ₂ to ST ₄ , respectively, and there are air gaps etc. on the left and right sides of the up line t ₁ . By providing an insulating separation device G ₁ on the upstream entrance side and an insulating separation device G ₂ on the upstream exit side, a closed section L of the upstream station section is provided between the devices G ₁ and G ₂ .
Thus, the segmented trolley line T is a blocked section between stations.
T ₁ , T ₂ , T ₃ , T ₄ and each of the above-mentioned upstream station blockage sections L
and the down line T ₂
have insulating separation devices on the left and right sides of the inlet, respectively.
g ₁ and an insulating separation device g ₂ on the downstream exit side, and both devices
A down station block section l is formed between g ₁ and g ₂ , and the return trolley T ₀ also has a return up line t ₁ ′ and a return line down line t ₂ corresponding to the above-mentioned crossing point of the segmented trolley wire T. ′ is branched.

Next, the high voltage single phase AC distribution line F (for example
6000V), transformers PT ₁ to PT ₅ are connected corresponding to each stop ST ₁ to ST ₅ , and a sectional key is connected between the secondary line (for example, 600 V) and the sectional contact wire T. Electric equipment SP ₁ to SP ₅ are inserted and connected, and the other secondary wires of the transformers PT ₁ to _{PT 5} are connected to the return trolley T ₀
are connected through a common wire connection or ground.

Therefore, these sectional electric facilities are connected to high-voltage single-phase AC distribution line F via transformers PT ₁ to PT ₅ as described above.
_The single- _phase AC power supplied _from As is clear from the drawing, the diodes of the divided power equipment SP ₁ to SP ₅ , namely SP ₁
For D ₁ , D ₂ , SP ₂ , SP ₃ , SP ₃
In the case of D ₁ , D ₂ , D ₃ , D ₄ , and SP ₅ , _D 3 and D ₄ are alternately connected to diodes in reverse directions for each power equipment so that they have reverse polarity.

In this embodiment, since the configuration is such that the turn _- around operation is performed at both the left and right end stops of _the same track, the classification key electric equipment SP ₁ ,
For SP ₅ , there are intermediate stops where you will cross paths.
Each division of ST ₂ and ST ₄ does not consist of all of the electric equipment SP ₂ and SP ₄ , but only the right half of SP ₂ and the left half of SP ₄ , respectively.

In addition, in the case of the same endless loop track mentioned above, the divisional electric equipment at each stop is SP ₂ , SP ₄ , etc., and in particular, the up or down train is placed in advance of the up or down vehicle stopped at the adjacent stop. start the traveling body
When installing a stop like ST ₃ , the electrical equipment for the same category will be configured like SP ₃ .

Furthermore, if the designated stop on the endless loop track mentioned above is used as a turnaround stop, the classification electric equipment at the same stop will be
SP ₁ , SP ₅ , etc.

Electrical equipment for each section of intermediate stops ST ₂ to ST ₄ above
SP ₂ to SP ₄ are _the closed section T 2 between the secondary side line of transformers PT ₂ to _{PT 4} and the upstream exit side insulating division device G ₂ ,
A diode D ₁ and a current relay coil I ₁ are connected in series between the T ₃ and T ₄ sides, and between the above-mentioned line and the upstream station closed section L side of the above-mentioned insulation division device G ₂ , A diode with the same polarity as the diode _D1
D2 , a normally closed contact _S1 opened by excitation of the current relay coil _I1 , configured to be opened and closed by the closing of the opening and closing doors of the traveling bodies _M1 to _M4 , or by other means. The departure switch RL ₁ is connected in series.

Furthermore, the same equipment connects a diode D ₃ of the same polarity and a current relay coil I ₂ in series between the same line and the inter-station blocking section T ₁ to T ₄ side of the down exit side insulating division device g ₂ . There is a same line and the above insulation division device G ₂
The polarity diode D ₄ and the normally closed contact of the current relay coil I ₂ are connected to the downbound station closed section l side.
S ₂ is connected in series with a departure switch RL ₂ configured to be opened and closed by other means, similar to the above-mentioned RL ₁ .

Furthermore, in the same facility, the upline t ₁ at the point where they pass each other,
A diode is installed in the insulating division device G ₁ on the up entrance side and the insulating division device G ₁ on the down entrance side provided on the down line t ₂ .
D ₅ and D ₆ are connected across, and at this time, the polarity of the diode is connected so as to pass a half-wave sine wave current from the adjacent rear section power equipment.

Therefore, for example, to explain the classification electrical equipment SP ₂ , if there is a running object on the up line t ₁ , the half-wave sine wave current will flow to the electrical equipment SP 2 that is adjacent to and behind it.
Transformer PT ₁ of SP ₁ , diode D ₂ - Current relay coil I ₁ - Blocked section between stations T ₁ - Diode D of divided electrical equipment SP _{2 5} - Blocked section L of up station section - Traveling body - Return trolley T ₀ - The circuit of transformer PT ₁ will be supplied to the relevant running body, and if there is a running body on the down line t ₂ , the half-wave sine wave current will be supplied to the segment-K electrical equipment adjacent to and behind SP ₂ . SP ₃ transformer PT ₃ - Diode D ₃ - Current relay coil I ₂ - Inter-station blocked section T ₂ -
It will flow to the circuit of the diode D ₆ of the divisional electrical equipment SP ₂ - down station block section l - traveling body - return trolley T ₀ - transformer PT ₃ .

Next, _the diodes D ₇ and D ₈ attached to the illustrated classified electric equipment SP ₃ will be explained.
diode D8 is connected across the insulating sectioning device _G2 on the upstream side of the upstream line _t1 , and the diode _D8 is connected across the insulating sectioning device _g2 on the downstream side of the downstream line _t2 , and these diodes As will be described in detail later, when an opposing vehicle is also stopped at a stop that is approaching and leaving, it is determined in advance which stop the vehicle at which the vehicle is located should be given priority to depart, and the system straddles the vehicle to the stop that has priority as described above. Therefore, in the illustrated example, the traveling objects existing on the up line t ₁ and the down line t 2 in SP ₃ are the station ST ₄ , the down line _{t 2 ,} the station ST ₂ , and the up line t _{1 , respectively} . The vehicle will now take off before the vehicle in .

Furthermore, the diode D ₇ for priority departure is also installed in the segmented power equipment SP ₁ of the left-most turnaround stop ST ₁ , and this D ₇ also serves as the function of the diode D ₅ described above. , and the diode D ₅ in SP ₅ also serves as the diode D ₈ for priority departure, and from the above, in the case shown, ST ₁ ,
Between ST ₂ , diode D ₇ of SP ₁ gives priority to upstream, between ST ₂ and ST ₃ , diode D ₈ of SP ₃ gives priority to downstream, and between ST ₃ and ST ₄ , diode D ₇ of SP ₃ gives priority to upstream. , ST ₄ and ST ₅ , the diode D ₅ and D ₈ of SP ₅ give priority to the downlink, and the reason for this will be explained as above.

The above-mentioned classified electrical equipment employs a switch mechanism in which the normally closed contacts S ₁ and S ₂ are opened by excitation of the current relay coils I ₁ and I ₂ , but it is also possible to A non-contact relay or other desired circuit may also be used.

Next, referring to the traveling bodies M ₁ to _{M 4} , the current collectors P ₁ and P ₂ of the power circuit contact the segment trolley wire T and the return trolley T ₀ respectively with a sliding type or roller rotating type, and the power circuit The electric motor m is driven by full-wave sine-wave power, but is braked by half-wave sine-wave power, and when switched from full-wave sine-wave power to half-wave sine-wave power while driving, the electric motor m is driven by full-wave sine-wave power. The brake is configured to operate.

Therefore, when full-wave sine wave power is applied between collectors P ₁ and P ₂ , the power circuit shown in the figure generates a half-wave of power.
P ₁ - Current relay coil i ₁ - Current relay coil i ₂ -
The circuit of diode d ₁ - P ₂ is energized, and the other half-wave causes current to flow in the circuit of P ₂ - diode d ₂ - current relay coil i ₃ - current relay coil i ₄ - P ₁ , and thus all of the above When the current relay coils i ₁ to i ₄ are excited, the normally closed contacts s ₁ and s 4 of i ₁ and i ₄ are opened, and the normally closed contacts s ₁ and s ₄ of i _{2 and i 3 are opened, as shown in the traveling bodies M 1 and} M ₂ . Normally closed contacts s ₂ and s ₃ are closed, and as a result, motor m is P ₁ −m
-s ₂ -s ₃ -P ₂ It is configured to receive full wave sine wave power and be driven by the circuit.

Further, when half-wave sine wave power is applied to the same circuit, current relay coils i ₁ , i ₂ to i ₃ , i ₄ are excited, so the running bodies M ₃ , M ₄ shown in the figure
As in, s ₁ and s ₃ are open and s ₂ and s ₄ are closed, or
Since s ₁ and s ₃ are closed and s ₂ and s ₄ are open,
P ₁ - s ₁ - Braking field ring BF - A half-wave sine wave current flows through the circuit of P ₂ , and as a result, the power supplied to motor m becomes less than 50%, and the field ring BF is excited. As a result, a braking electromagnet (not shown) presses against a braking plate (not shown) provided along the track R, thereby braking the traveling body.

Here, the braking device may be a contact type as described above, a non-contact type electromagnetic brake, or an appropriate brake that operates a hydraulic brake.

Of course, it may also be a conventional wheel braking device.

Furthermore, when the running body is running on full-wave sine-wave electricity and switches to half-wave sine-wave electricity, the above-mentioned braking is applied and the dynamic braking circuit including resistor r is activated.
BC is closed and dynamic braking is activated.

To explain the case in which the method according to the present invention is implemented using a control system having the above-mentioned circuit configuration, a closed section between stations such as the traveling bodies M ₁ and M ₂ shown in the figure is explained.
When T ₁ and T ₂ are present, M ₁ receives half-wave sine wave power from diode D ₁ of segmented electrical equipment SP ₁ , and receives reverse polarity power from segmented electrical equipment SP ₂ via diode D ₃ . receives a half-wave sine wave power of, M ₂ is
Since half-wave sine wave power of opposite polarity is received from the respective diodes D ₁ and D ₃ in SP ₂ and SP ₃ , both running objects end up being supplied with full-wave sine wave power, Therefore, as described above, the electric motor m is driven and the vehicle can travel in the desired upward or downward direction.

As described above, when a traveling object is traveling in the inter-station blocked section T ₁ to _{T 4} and there is a traveling object in the same direction stopping at a stop adjacent to and behind the traveling object in the traveling direction, for example, if the traveling object shown in the figure When the body M ₂ is traveling in the down direction and a vehicle traveling in the same direction is stopped at the stop ST ₃ , the vehicle M ₂ receives half-wave sine wave power from the diode D ₃ of SP ₃ as described above. Therefore, the current relay coil I ₂ of SP ₃ is energized and its normally closed contact S ₂ is opened, so even if the departure switch RL ₂ is closed, the down line of SP ₃ is The half-wave sine-wave power from the diode _D4 of SP ₃ is not supplied to the traveling body at t ₂ , and the half-wave sine-wave power from the segmented power equipment SP ₄ adjacent to it is transferred to SP _3. Diode D ₆ ―T ₃ ―SP ₄ I ₂ ―D ₃ ―
Since it is only received by the circuit of the transformer PT ⁴ , it is possible to ensure that the vehicle is braked and stopped at the stop ST ₃ .

If this preceding vehicle M ₂ is at the adjacent stop ahead and enters the downbound station block section 1, M ₂ receives half-wave sine wave power from SP ₃ via the diode D ₆ of SP ₂ . It will only receive the moving body.
Braking is applied to M ₂ , causing it to stop in the same section 1 of stop station ST ₂ .

Next, when vehicles traveling in the same direction (downhill) are parked at adjacent stops, such as ST ₃ and ST ₄ , the front traveling vehicle generates a half-wave sine wave from the adjacent rear section electrical equipment SP ₄ . By closing SP ₃ 's departure switch RL ₂ from a braking stopped state while receiving electric power.
The train is powered up by SP ₃ and SP ₄ and can depart, but
For the rear traveling body _M3 , the current relay coil _I2 of _SP4 is excited by the above half-wave sine wave power, and its normally closed contact is open, so the departure switch is activated.
Even if RL ₂ is closed, the half-wave sine wave power from SP ₄ is not provided to M ₃ , and the M ₃ braked stop is ensured by receiving half-wave sine wave power from the segmented electric equipment SP ₅ located adjacent to the rear. .

Then, when the forward traveling body departs from the stop ST ₃ and enters the inter-station blockade section T ₂ in front of it, the half-wave sine wave power disappears and the current relay coil I ₂ of SP ₄ is activated. Since it is de-energized and its normally closed contact S ₂ is closed, the rear traveling body M ₃ departs by closing the departure switch RL ₂ .

Next, if there are opposing vehicles stopping at adjacent stops ST ₃ , ST ₄ , etc., the upbound traveling vehicle of ST 3, which is on the priority side, will stop at ST ₄ , which is on the non-priority side, as described _above . The half-wave sine wave power from the segmented electric equipment SP ₄ is received by the circuit consisting of the diode D ₇ of SP ₃ - T ₃ - I ₂ of SP ₄ - the same diode D ₃ , and therefore the non-priority side running body M ₃ tries to depart in the down direction, the normally closed contact S ₂ of SP ₄ is open, so even if the departure switch RL ₂ is closed, the half-wave sine wave power from SP ₄ is reduced to M ₃ Braking and stopping is ensured by receiving only the half-wave sine wave power from the adjacent rear compartment power equipment SP ₅ without receiving any power, and the priority side traveling body on the up line of SP ₃ is operated by SP ₃ for opening and closing for departure. If the vehicle RL ₁ is closed, it will receive full-wave sine wave power, so priority departure will be possible, and if the vehicle departs and enters the upstream station block section L on the non-priority side, SP ₄
Since the half-wave sine wave power that was exciting the current relay coil I ₂ disappears, the non-priority side classification key electric equipment SP ₄
If the starting switch RL ₂ is closed, the non-priority traveling body M ₃ can be started using full-wave sine wave power using SP ₄ and SP ₆ .

Incidentally, as in the above embodiment, in order to reverse the running direction of the traveling body at the both-end turning station, it is sufficient to reverse the polarity of the electric motor, and this can be done by these existing remote switching operations.

As another means, a well-known turntable for reversing the traveling body may be provided at the stop designated for the both-end turning station.

The return line in the present invention may be a conductive track system such as a well-known return trolley or iron wheels or iron rails having the same function as the return trolley.
These can be adopted from within the known art.

In the above-described embodiment, the running path of the traveling body in the present invention is a single track with turning stops at both ends. Or, in these running routes, the predetermined stop section consists of a turning section, or the running path of the traveling object consists of a combination of a single track with turning stops at both ends and an endless circular single track. , one of which has a stop at one end as a turning station, and furthermore, the traveling path of the traveling body consists of a single track with turning stops at both ends, and
The designated stop section will be the turnaround section,
A system in which one stop at one end is a turnaround station can be adopted within the range of the above-mentioned embodiments or within the range of well-known technology.

Since the system of the present invention can be implemented as described above, it is possible to automatically control the traveling vehicle by unifying the power system and the signal/safety system, and therefore it is equivalent to or better than the highly reliable track circuit system. Since reliability can be provided and the system can be simplified, construction costs and operating costs can be significantly reduced through rational design.

Since a track circuit is not required, it is possible to use a running body with rubber tire wheels, and therefore the braking distance can be shortened, making it possible to increase the running density and achieve low-noise and comfortable driving. Become.

In addition, the motor is controlled by using diodes, etc. to selectively use full-wave sine wave output and half-wave sine wave output, so only two contact wires are required using a single-phase AC power supply, and one wire can be used as a rail. Since it is possible to reduce the construction cost from this point of view as well, it is also applicable to conventional railways.

Furthermore, by creating passing points corresponding to the stops, using appropriately insulated section contact wires, and equipping section feeder equipment with a current rectification function, it is possible to ensure that oncoming vehicles do not pass each other at stops when driving on a single track. In order to ensure that the vehicle is running at the same time, only one traveling body is always allowed to enter between stops, and when there is a traveling vehicle traveling in the same direction at an adjacent stop, the preceding traveling vehicle departs from the stop. The rear vehicle will not be allowed to depart unless the vehicles move in the opposite direction, and if vehicles traveling in opposite directions are located at adjacent stops, priority will be given to the vehicles traveling in either direction. Since the non-priority vehicle is automatically controlled not to depart until the vehicle enters the next stop and there is no danger of collision, the above-mentioned passing operation can be carried out without any problems.

Although the above description has been about single-line passing operation, it is clear that it can also be applied to control of side lines and main lines (for example, when entering and exiting from a garage).

[Brief explanation of the drawing]

The figure is a wiring diagram showing an embodiment of a single-phase AC power supply circuit and a traveling body power circuit attached thereto, which can be used to implement the power control method according to the present invention. ST ₁ to _{ST 5} ...Stop, _M1 to _M4 ...Traveling body, R
...Track, F...High voltage single-phase AC distribution line, PT ₁ ~
PT ₅ ……Transformer, SP ₁ to _{SP 5} ……Category electrical equipment,
T ₀ ... return trolley, t ₁ ... up line, t ₂ ... down line, G ₁ ... insulating separation device on the up entrance side, G ₂ ... insulating separation device at the up exit, L ... up station blockage section,
T ₁ to _{T 4} ... Blocked section between stations, g ₁ ... Insulation separation device on the down entrance side, g ₂ ... Insulation separation device on the down exit side, l
...Down station blockage section, T...Divisional trolley line, t ₁
... Return line up line, t ₂ ... Return line down line, m... Electric motor.

Claims (1)

[Scope of Claims] 1. A single-phase AC power distribution line installed along the track of a traveling body provided with a desired number of stops, and a secondary line of a transformer connected to the distribution line corresponding to each stop. It is equipped with electrical equipment for each section to be connected, a return line without insulation section that connects the secondary side of the same transformer to other lines, and a crossing point where the up line and down line are branched off, corresponding to the required stops. , on the up line, each up station block section is insulated and divided by an insulating section on the inbound entrance side and an insulating section on the up exit side, and is insulated and separated from the inter-station closed section, and on the down line, A sectioned contact wire forming a closed section at the down station section is provided between the insulated sectioning device on the inbound entrance side and the insulated sectioning device on the outbound exit side,
In the return line, a passing point is formed where the return line up line and a return line down line are branched, corresponding to the passing point of the segment contact wire, and the above-mentioned segment feeder equipment is connected to an insulating separation device on the upstream exit side and an insulating segmentation device on the downstream exit side. In addition to being in contact with the side insulating segmentation devices, the electrical equipment for each segment is equipped with a rectifying function that alternately reverses the polarity, and the running body that collects current from the segment contact wire and return wire has a full-wave sine current. By providing a running electric motor that is driven by wave power, braked by half-wave sine wave power, and capable of operating dynamic braking, the traveling body in the closed section between each station can be operated by the divided electric equipment on both sides. The vehicle receives the half-wave sine wave power supplied from the station to run in the up or down direction, and the vehicle traveling in the same direction, which is parked at a stop adjacent to the rear of the vehicle in the direction of travel, receives the half-wave sine wave power supplied from the station. Due to the operation using the half-wave sine-wave power supplied from the equipment to the preceding vehicle, even when the departure switch of the equipment is closed, the half-wave sine-wave power from the equipment is not received, and the adjacent segment behind it is not affected. Braking is ensured by receiving only half-wave sine wave power from the main electric equipment, and when there are vehicles traveling in the same direction at adjacent stops, the front traveling body receives only the half-wave sine wave power from the rear electric power equipment. It is possible to start the train from a braking stopped state by closing the starting switch when receiving half-wave sine wave power from the equipment, but the rear traveling body is powered by the half-wave sine wave power from the equipment. As a result, even when the departure switch is closed, the train does not receive half-wave sine-wave power from the same equipment, but only receives half-wave sine-wave power from the adjacent compartment rear electrical equipment to ensure braking and stopping. , the forward traveling body departs, enters the blocked section between stations in front of it, and waits for the half-wave sine wave power to dissipate, and then closes the departure switch to close the rear traveling body. , Departure is possible using full-wave sine wave power from the rear adjacent compartment electrical equipment and the relevant compartment electrical equipment, and when an opposing traveling vehicle is stopped at an adjacent stop, its priority traveling vehicle receives half-wave sine wave power from the non-priority side electric equipment, and the non-priority side traveling body closes its departure switch by operating the electric equipment in the non-priority side using the half-wave sine wave power. Even if the vehicle is braked to a stop, it does not receive half-wave sine-wave power from the same equipment, but receives only half-wave sine-wave power from the adjacent rear compartment power equipment, and the priority traveling vehicle departs, and the non-priority vehicle Waiting for the half-wave sine wave power to disappear when entering the blocked section between stations on the side, the non-priority vehicle is classified into the priority side by closing the departure switch in the non-priority side classification power equipment. A two-wire power control system for a running body using a single-phase AC power supply, characterized in that departure is possible using full-wave sine wave power from a main power supply equipment and a non-priority side divided power supply equipment. 2. Classified power equipment equipped with a power rectification function that alternately reverses polarity uses a diode connected in series between the secondary line of the transformer and the inter-station closed section side of the insulating division device on the upstream/exit side. -Current relay coil and
Diodes of the same polarity connected in series between the above-mentioned line and the upstream station closed section side of the above-mentioned insulating division device - the normally closed contact of the above-mentioned current relay coil - the departure switch, and the above-mentioned line and the insulating section on the outbound exit side A diode of the same polarity connected in series between the current relay coil and the side of the closed section between stations of the above line, and a diode of the same polarity connected in series between the above line and the closed section side of the outbound station section of the above insulation division device - the above. Normally closed contact of the current relay coil - From the starting switch and the polarized diode that is connected across the insulating sectioning devices on both the up and down inlet sides and passes half-wave sine wave power from the adjacent rear sectioning power equipment. A two-wire power control system for a traveling body using a single-phase AC power supply according to claim 1. 3 Half-wave sine waves from the classification key electrical equipment on the adjacent non-priority departure side that straddles the insulating division device on the inbound exit side and the insulation division device on the outbound exit side, which are on the priority departure side of the inbound and outbound lines of each station. 2. A two-wire power control system for a running body using a single-phase AC power supply as claimed in claim 1, characterized in that the system comprises a diode with a polarity that allows current to pass therethrough.