JP3236209B2 - Train current collector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current collecting means for collecting electric power by a train running at high speed, and to a train current collecting device using an electrode device applied thereto.

[0002]

2. Description of the Related Art Conventional train current collecting means uses a wheel and a pantograph, respectively, a rail and a conductor (third rail).
In most cases, current is collected while rotating or sliding friction [hereinafter, this is referred to as "conventional example"].

[0003]

However, in the conventional example, when the running speed of the train is increased to improve the transportation efficiency, the life of the pantograph or the like that is in sliding friction is only shortening. However, there is a concern that the pantograph may not be able to follow the deflection of the conductor (third rail) and may not be in contact with the pantograph, resulting in a poor running state. Here, the present invention provides a train current collecting device capable of contactless and stable current collection even during high-speed running from a feeder (third rail) so as to solve the problems of the conventional example. With the goal.

[0004]

SUMMARY OF THE INVENTION In order to solve this problem, a train current collector according to the present invention has a constant air gap between a feeder (third rail) and a current collecting electrode. Perform feedback control. In other words, the movable iron core to which the electrodes are fixed is held between the two upper and lower stators with a gap therebetween, and the current supplied to these stators is controlled to raise and lower the electrodes, thereby allowing non-contact through a certain gap. Collect electricity. As a result, high-speed running is possible without friction, the air gap of the current collecting path is kept constant, and the train can be driven at high speed and stable by stable current collection. In addition, in the actuator means that collects electric power in a non-contact manner through a certain gap, a highly responsive actuator often has a small controllable stroke. In this case, the control range may be exceeded, and stable current collection may be impaired. Therefore, the electrodes are displaced together with the actuator, and a second actuator having a larger stroke and a lower frequency characteristic than the actuator is provided, and a double operation is performed. To control the gap.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention comprises a power source, a driving source, an electrode provided to face a conductor via an air gap, and an insulating member provided through an insulating member. An actuator that can change the air gap by driving an electrode; a sensor that detects the air gap; and an air gap command value that commands the value of the air gap and a deviation between a signal detected from the sensor and an air gap command value. A gap controller for controlling the air gap to be equal to the air gap command value, and an electrode device including a drive control device for driving the actuator in response to a command from the gap controller. In a current collector of a train mounted on a vehicle and controlling the air gap to be constant when the vehicle is running, the actuator includes: A movable iron core to which the electrode is fixed via an insulating member, a displacement detection rod fixed to the movable iron core, a guide for supporting the electrode and the displacement detection rod to slide in parallel, and It is constituted by two stators which are opposed to each other with a gap between the core and an air gap, generate magnetic attraction when an electric current is supplied, and can change the air gap between the electrode and the feeder. A drive sensor for detecting a position of the mover core with respect to the stator, two amplifiers for supplying current to the two stators, a control signal from the gap controller and the displacement A compensator for receiving a signal from a sensor and giving a command to the two amplifiers, and compensating a supporting force exerted on the mover core by the stator so as to be in a proportional relationship with a command from the gap controller. It is configured as a current collector of the train characterized by.

The invention according to claim 2 of the present invention is characterized in that the compensator decreases the current of one of the two stators if the current of the other increases. It is a current collector for trains.

According to a third aspect of the present invention, the compensator supplies a bias current to the two stators, and increases one current to decrease the other current. The train current collector according to claim 1, wherein

According to a fourth aspect of the present invention, there is provided a power supply, a driving source, an electrode provided to face a conductor via an air gap, and driving the electrode via an insulating member. An actuator capable of changing the air gap, a sensor for detecting the air gap, and a deviation between an air gap command value for instructing a value of the air gap and a signal detected from the sensor,
The vehicle includes a gap controller for controlling the air gap to be equal to the air gap command value, and an electrode device including a drive control device for driving the actuator in response to a command from the gap controller. In the current collector of a train that is mounted and controls the air gap to be constant when the vehicle is running, the actuator includes a movable iron core to which the electrodes are fixed via the insulating member, and a movable core thereof. A displacement detection rod fixed to the armature core, a spring that constantly presses the electrode in the direction of the feeder, and faces the movable armature core with a gap therebetween, and generates a magnetic attractive force when a current is supplied. And two stators capable of changing the air gap between the electrode and the feeder, and the drive control device includes: A displacement sensor that detects the position of the mover iron core, an amplifier that supplies a current to the stator, and receives a control signal from the gap controller and a signal from the displacement sensor to give a command to the amplifier, A train current collector comprising a compensator for compensating a supporting force exerted on the mover core by the stator so as to be proportional to a command from the gap controller.

According to a fifth aspect of the present invention, there is provided a power supply, a drive source, and a position of an electrode connected to the power supply by an insulated cable to keep an air gap between the conductor and the electrode constant. In a train current collector including an electrode device for controlling, the electrode device includes a gap sensor that detects the air gap between the feeder conductor and the electrode, and receives the signal from the gap sensor to detect the air gap. , A first gap controller that controls the electrode to be constant, a first actuator that drives the electrode, and a first actuator that can drive the first actuator in response to a command from the first gap controller. A first actuator driving means for controlling the position of the electrode to a high frequency band with a small displacement, and a signal from the gap sensor to receive the signal from the gap sensor. A second gap controller for controlling the gap to be constant, a second actuator for driving the first actuator, and driving the second actuator in response to a command from the second gap controller And a second actuator driving means for controlling the position of the electrode and the first actuator up to a large displacement in a low frequency band. Current collector.

The invention according to claim 6 of the present invention is characterized in that the feeder conductor is a rail laid on an opposed fixed portion of a running train.
The current collector of a train according to any one of the above items.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is an explanatory diagram showing a schematic configuration of a main part of a train to which the present invention is applied. In FIG. 1, 1 is a vehicle, 2 is a conductor (third rail), 3 is a power source, 4 is a drive source, 5 is an electrode device, and 51 is an electrode. The electrode 51 is provided to face the feeder conductor (third rail) 2 via a predetermined air gap, and is slidably mounted on the electrode device 5 fixed in the vehicle 1 in a vertical direction. When the air gap is going to fluctuate due to irregularities on the surface of the electric conductor (third rail) 2 while the vehicle 1 is traveling, a gap detection signal from a gap sensor (not shown in FIG. The device 5 slides up and down and the electrodes
The air gap is kept constant by displacing 51.

FIG. 2 is an explanatory view showing the overall electric circuit configuration of the electrode device as a current collecting means and the configuration of some mechanical mechanisms. In FIG. 2, the rod-shaped electrode 51 has an opposing surface area capable of collecting current from the surface of the feeder conductor (third rail) 2 and a width capable of covering a roll in the running direction.
51a is a movable iron core attracted to the stator 52a or the stator 52b, 51b is a displacement detection rod representing the displacement of the movable iron core 51a,
51c is an insulating member, which is integrally formed.
52a and 52b are stators formed by electromagnets fixed to the fixed side in the vehicle, which are arranged vertically above and below the mover iron core 51a with a gap therebetween, and 53a and 53b support the electrodes 51 and the displacement detection rods 51b and the like. The guide (support member) is fixed to the fixed side, and can be slid only in the vertical direction, and has very little friction. Mover core 51a, displacement detection rod 51b, guides 53a, 53b,
The stators 52a and 52b form an actuator for moving the electrode 51 up and down. 54a and 54b are the stators 52a and 52
An amplifier that supplies current to b, 55 is a compensator (details are described later)
Reference numerals 58a and 58a denote displacement sensors for detecting the position of the mover core 51a with respect to the stators 52a and 52b. The displacement sensor 58a, the amplifiers 54a and 54b, and the compensator 55 constitute a driving device for driving the actuator.

Reference numeral 58b denotes a gap sensor for detecting an air gap between the feeder conductor (third rail) 2 and the electrode 51. Reference numeral 55 denotes a stator 52a, 52b corresponding to a signal from a gap controller 56, wherein the stators 52a, 52b are movable cores 51a. Is a compensator that performs a compensation operation so that a supporting force is generated by the magnetic attraction force, and a comparator 57 that compares both signals of the gap command value Gs and the detection value of the gap sensor 58b to calculate a gap deviation. Comparator 57 and gap controller
The air gap sensor 58b and the air gap sensor 58b constitute air gap phase control means. Reference numeral 59 denotes an insulated cable connecting the electrode 51 and a power supply (not shown). The compensator 55, which receives the signal of the air gap controller 56 and the signal of the displacement sensor 58a and sends a command to the amplifiers 54a, 54b,
The supporting force of the stators 52a and 52b supporting a is compensated so as to be proportional to the signal of the controller 56. That is, the amplifier 54a, the stator
52a acts to lower the movable iron core 51a by magnetic attraction, and the amplifier 54b and the stator 52b operate to raise the movable iron core 51a by magnetic attraction. good. In such a configuration, the gap sensor 58b compares the detected value of detecting the gap between the electrode 51 and the conductor (third rail) 2 with the gap command value Gs, and if there is a difference, the gap controller 56 Work and issue a slide command. The compensator 55 which has received the slide command gives a current to the stators 52a and 52b via the amplifiers 54a and 54b to displace the movable iron core 51a. And the electrode 51
When the gap between the conductor (third rail) 2 is the command value Gs
Approaching. Since this operation continues, the air gap is kept constant even when the vehicle 1 runs.

(Embodiment 2) FIG. 3 is an explanatory diagram of a main part in which a part of FIG. 2 is modified to have another configuration. In FIG. 3, reference numeral 50 denotes a spring mounted between the fixed parts [although it may be mounted between the lower end face of the mover core 51a and the fixed part, in which case the stator uses 52a (see FIG. 2)]. The lower side is in contact with the upper end face of the movable core 51a, and the upper side is fixed to a fixed side (not shown) and is mounted in a compressed state, and constantly presses the movable core 51a downward. And the movable iron core
Reference numeral 51a is a stopper (not shown) that is displaced (downward) only to a predetermined position. In such a configuration, when current is supplied to the stator 52b, the movable core 51
The suction force acts on a, and the movable iron core 51a pressed by the spring is pulled up. By performing feedback control in the same manner as in FIG. 2, the air gap is made equal to the command value Cs, and is maintained at a constant value.

(Embodiment 3) FIG. 4 is a block diagram showing a circuit configuration of Embodiment 3 of the present invention. In FIG. 4, reference numeral 61 denotes a conductor (third rail) 2 forming a train line and an electrode 51.
A first actuator that varies an air gap between the first and second actuators;
62 is a second actuator for mounting and mounting the first actuator 61 and the electrode 51 together to change the air gap, 71 is a first driving device for driving the first actuator 61, and 72 is a second driving device. A driving device 56a for the actuator 62 receives a detection signal from the air gap sensor 58b, controls the phase so that the air gap becomes a predetermined size, and sends a command to the first driving device 71. 56b receives the detection signal of the air gap sensor 58b and controls the phase so that the air gap has a predetermined size.
The second gap controller for sending a command to the
(Not shown) connects the electrode 51 (see FIGS. 2 and 3) to the power supply of a train (not shown). These are all disposed inside the vehicle, and the electrode 51 and the first actuator 61 are electrically insulated. Also, the second actuator
The stroke in which the first actuator 61 drives the electrode 51 together with the electrode 51 is larger than the stroke of the first actuator 61 that drives the electrode 51, and furthermore, the second actuator
The frequency characteristic of the gap control loop including the first actuator 61 is suppressed lower than the frequency characteristic of the gap control loop including the first actuator 61.

In the above configuration, when the train runs at high speed, the stroke is small but the high-frequency gap fluctuates due to the surface roughness of the feeder (third rail) 2 and the like. On the other hand, the whole vehicle shakes due to the wind pressure fluctuation, but the weight of the vehicle is large, so that the gap of the low frequency changes.
When the above-described device of the present invention is operated with respect to these gap fluctuations, a large fluctuation at a low frequency in the relative displacement between the vehicle 1 (electrode 51) and the electric conductor (third rail) 2 is caused by the second gap control. The small amplitude, high frequency oscillations are controlled by a control loop including a first gap controller 56a. When there is no wind pressure fluctuation and the fluctuation of the relative position between the vehicle 1 and the electric conductor (third rail) 2 is small,
The control loop including the second gap controller 56b hardly operates, and the control loop including the first gap controller 56a operates to control the gap to be constant.

[0017]

As described above, according to the present invention, the current is collected in a non-contact state without contact of the electrode with the feeder conductor (third rail), so that the running speed is limited by the friction of the current collector. Because the gap is kept constant, the air gap in the current collecting path is constant, the current is not disturbed, stable high-speed running is possible, the speed of trains is increased, and the transportation speed is increased The advantageous effect described above can be obtained. In other words, high-speed running is enabled without friction, and feedback control is accurately and quickly performed on the air gap in the current collecting path between the current carrying conductor (third rail) and the current collecting electrode, and the electrode slide operation. Is performed smoothly, the air gap is kept constant, the train can be driven at high speed and stable by stable current collection, and a quick and efficient electrode sliding operation corresponding to the magnitude of displacement becomes possible. Even when the vehicle is running at high speed, the fluctuation of the conductor (third rail) is relatively small and the air gap can be adjusted in a short time. Even in the case of transient displacement of time, it plays a role of maintaining the position of the electrode in a biasing manner, and the cost of equipment can be reduced and the equipment can be simplified based on the reduction of one stator. Furthermore, quick and efficient electrode sliding operation corresponding to the magnitude of displacement is enabled, superimposed electrode movement is made more reliable, and the conductor (third rail) is used for high-speed running of vehicles. The fluctuation of the air gap is relatively small, the air gap can be adjusted in a short time, and the gap between the feeder (third rail) and the electrode is controlled in a double control area, so the vehicle may shake greatly. Even if there is a gap, the gap is always controlled to be constant, the effect of non-contact current collection can be maximized, and a special effect that enables stable high-speed running of the train can be achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a main part of a train according to a first embodiment of the present invention.

FIG. 2 is a diagram for explaining an electrical circuit configuration showing the entire electrode device as a current collecting means and a configuration of some mechanical mechanisms in Embodiment 1 of the present invention.

FIG. 3 is a diagram for explaining an electrical circuit configuration showing the whole of an electrode device as a current collector in Embodiment 2 of the present invention and a configuration of some mechanical mechanisms.

FIG. 4 is a block diagram showing a circuit configuration according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Conductor (3rd rail) 3 Power supply 4 Drive source 5 Electrode device 50 Spring 51 Electrode 51a Movement iron core 51b Displacement detection rod 51c Insulation member 52a, 52b Stator 53a, 53b Guide 54a, 54b Amplifier 55 Compensator 56 Gap controller (Phase controller) 56a First gap controller 56b Second gap controller 57 Comparator (calculation of gap deviation) 58a Displacement sensor 58b Gap sensor 59 Insulated cable 61 First actuator 62 Second Actuator 71 First drive 72 Second drive

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yusuke Sato 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Inside the Railway Technical Research Institute (56) References JP-A-7-39007 (JP, A) JP-A-6-217404 (JP, A) JP-A-48-15207 (JP, A) JP-B-46-32082 (JP, B1) JP-B-47-9964 (JP, B1) (58) Int.Cl. ⁷ , DB name) B60L 5/00-5/42 H01F 38/14

Claims (6)

(57) [Claims] A power source; a driving source; an electrode provided to face the conductor via an air gap; and an actuator capable of changing the air gap by driving the electrode via an insulating member. A sensor for detecting the air gap; and a deviation between an air gap command value for instructing the value of the air gap and a signal detected from the sensor, so that the air gap becomes equal to the air gap command value. Controller, and an electrode device comprising a drive control device that drives the actuator in response to a command from the gap controller, and these are mounted on a vehicle, and when the vehicle is running, In the current collector for a train that controls the air gap to be constant, the actuator has the electrode fixed to the electrode via the insulating member. A movable iron core, a displacement detection rod fixed to the movable iron core, a guide for supporting the electrode and the displacement detection rod so as to be slidable in parallel, facing each other with a gap from the movable iron core, When the current is supplied, the stator includes two stators that generate a magnetic attraction force and can change the air gap between the electrode and the conductor. The drive control device includes: A displacement sensor for detecting a position of the mover iron core with respect to: two amplifiers for supplying a current to the two stators; a control signal from the gap controller and a signal from the displacement sensor to receive the two signals. A compensator for giving a command to an amplifier and compensating a supporting force exerted on the mover core by the stator so as to be in a proportional relationship with a command from the gap controller. Train of the current collector. 2. The train current collector according to claim 1, wherein said compensator increases one current of said two stators and decreases the other current. 3. The train assembly according to claim 1, wherein said compensator supplies a bias current to said two stators, and increases one current to reduce the other current. Electrical equipment. 4. An actuator capable of changing the air gap by driving the power supply, a driving source, an electrode provided to face the conductor through an air gap, and an insulating member. A sensor for detecting the air gap; and a deviation between an air gap command value for instructing the value of the air gap and a signal detected from the sensor, so that the air gap becomes equal to the air gap command value. Controller, and an electrode device comprising a drive control device that drives the actuator in response to a command from the gap controller, and these are mounted on a vehicle, and when the vehicle is running, In the current collector for a train that controls the air gap to be constant, the actuator has the electrode fixed to the electrode via the insulating member. A movable iron core, a displacement detection rod fixed to the movable iron core, a spring that constantly presses the electrode in the direction of the feeder conductor, Is supplied, a magnetic attraction force is generated, and the air gap between the electrode and the conductor is configured to be changed from two stators. The drive control device is configured to control the stator A displacement sensor for detecting the position of the mover core, an amplifier for supplying a current to the stator, and receiving a control signal from the gap controller and a signal from the displacement sensor to give a command to the amplifier, A current collector for a train, comprising a compensator for compensating a supporting force exerted by a stator on the mover iron core in a proportional relationship with a command from the gap controller. 5. A train collection comprising a power supply, a drive source, and an electrode device for controlling a position of an electrode connected to the power supply by an insulated cable and controlling an air gap between the conductor and the electrode to be constant. In the electrical device, the electrode device includes: a gap sensor that detects the air gap between the feeder conductor and the electrode; and a first sensor that receives a signal from the gap sensor and controls the air gap to be constant. A gap controller, a first actuator that drives the electrode, and a first drive device that can drive the first actuator in response to a command from the first gap controller. First actuator driving means for controlling the position to a high frequency band with a small displacement; and receiving the signal from the gap sensor so that the air gap is constant. A second gap controller that controls the first actuator; a second actuator that drives the first actuator; and a second actuator that can drive the second actuator in response to a command from the second gap controller. And a second actuator driving means for controlling the position of the electrode and the first actuator to a large displacement in a low frequency band, comprising: a driving device; and a train current collecting device. 6. The train power collection device according to claim 1, wherein said feeder conductor is a rail laid on a fixed portion facing a running train. apparatus.