JPS602843B2 - electric vehicle power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply device for an electric vehicle that is changed direction by a turntable and runs and traverses.

The electric vehicle according to the present invention, as shown in FIGS. 1 and 2, is an electric vehicle that runs on iron tracks by itself using iron theory, and its traveling direction can be changed at right angles by a turntable.

FIG. 1 shows a self-propelled vehicle having two sets of two-axle, four-wheeled bogies, and FIG. 2 shows a self-propelled vehicle having four sets of two-axle, two-wheeled bogies. In Fig. 1, 1 is a car body, 2 is a bogie, and 3 is a heart.The car body 1 and the bogie 2 are connected by a center plate 3 so that the bogie 2 can rotate 90 degrees with respect to the car body 1. . Reference numeral 4 designates a turntable, which is configured to rotate the center pin 5 by 90° in the center 'D'. In the figure, reference numeral 6 denotes a rail fixed to the turntable, which rotates together with the turntable 4. 7 is a rail fixed on the ground.

The center-to-center dimension of the two carts 2a, 2b is made to match the center-to-center dimension of the two turntables 4a, 4b.

Both FIG. 1 and FIG. 2 show a state in which a self-propelled vehicle is stopped on a turntable.

In this state, the turntable and cart can rotate together. Figure a shows a state in which the running vehicle can proceed in the
Indicates a state in which it is possible to proceed in the direction (hereinafter referred to as traverse). As is clear from the figure, the self-propelled vehicle can change direction only when the self-propelled vehicle is on the turntable. Also, although the orientation of the turntable and truck changes by 90 degrees, the attitude of the vehicle body remains the same. FIG. 2 shows the case of a sight-running vehicle having four two-axle, two-wheeled bogies, and four turntables are prepared corresponding in size to the respective bogies. The procedure for switching between running and traversing the self-propelled vehicle is the same as in the case of FIG.
Also, although the evening table and the truck rotate 900 times, the attitude of the vehicle body does not change, as described above. When a self-propelled vehicle that is required to run and traverse in this manner is powered by electric power, it is conceivable to supply the electric power from a trolley wire.

Figure 3 shows an example where DC power is supplied from a trolley wire, and the rail is used for the return wire.

Therefore, only one trolley wire is required. In the figure, 1
A trolley line built above the river, running along the center line of the line.

Reference numeral 13 is also electrically connected at the intersection of the trolley wire in the running direction and the trolley wire in the transverse direction.

12 is a current collector installed on the center point of the roof of the self-propelled vehicle;
It has a structure that allows it to collect current even if the vehicle is running or crossing the road.

However, such power supply devices for electric vehicles have the following drawbacks. In other words, it cannot be applied in surrounding environments where the sky above the 11th running vehicle cannot be used. (2}
It is difficult to apply this method when the power source is a three-phase alternating current. Fourth
The figure shows the vicinity of the intersection when three-phase overhead trolley wires are installed, but it is extremely difficult to configure the structure so as not to short-circuit each phase. The use of rails for glue lines is not applicable in areas where the rails are heavily soiled, as this may result in poor conduction. If a trolley wire is used for the return line as a countermeasure, there will be two trolley wires, and the same problem as in the case of a three-phase trolley will occur. In places where overhead trolleys cannot be used, it is possible to lay trolley lines on the ground.

FIG. 5 is an example. In the figure, 11 is a trolley wire fixed to the ground, and 11' is fixed to a turntable and can rotate together with the turntable. Reference numeral 12 denotes a current collector provided at the bottom of the center of the cart.

This method has the following drawbacks. {1} Since the trolley wire will be installed on the ground, it will be necessary to take measures to protect people from electric shock. '2) The trolley wire on the turntable is
Since the power supply is routed along with the turntable, reliability will be compromised unless power is supplied to it by a cable or a slip ring. However, when two or more trolley wires are installed, the direction of the trolley wire on the turntable changes as the turntable rotates, so the problem of short circuits as in the case of overhead trolley wires is solved (Figure 6). Although it is conceivable to lay the trolley wire on the side of the self-propelled vehicle, this is difficult to realize because the trolley wire itself will obstruct the vehicle's progress at the intersection. The present invention has been made in consideration of the above points, and relates to a power supply device that provides power to a running and traversing electric sightseeing vehicle, and is intended to eliminate the disadvantages described in the case of using a trolley wire. .

The power supply device for an electric vehicle according to the present invention receives electric power from a trolley wire during traveling (or traversing), receives electric power from a battery mounted on the vehicle during traversing (or traveling), and does not charge the battery. This is done in the trolley section.

Furthermore, the two power sources are automatically switched depending on the direction of the turntable, and the turntable can be freely run and traversed. FIG. 7 shows an embodiment of the present invention, which is applied to a sight-running vehicle having two two-axle four-wheeled bogies.

The same applies to a self-propelled vehicle having four two-wheeled bogies.

Further, in the figure, three-phase alternating current is collected, but the features of the present invention are not applicable even if direct current is collected. Furthermore, although the figure shows a trolley that receives power while traveling and travels traversing on battery power, it goes without saying that the trolley may travel on battery power and travel traverse by the trolley. Note that the present invention is applied to a self-propelled vehicle running on a track with a track layout as shown in FIG.
It is not considered to enter in the ' direction, or to enter in the Y2 and Y3 directions by crossing the X2-X2' line or the X3-x3' line. Figure 9 shows a device on a self-propelled vehicle, 12
21 is a charger for battery charging, 22 is a battery that supplies electric power when the trolley is traveling, 23 is a control device for controlling the electric motor while the trolley is receiving power, and 24 is a control device for controlling the electric motor while the trolley is running. 25 indicates an electric motor for running and traversing, and UJW indicates that the AC power source is used as a millimeter.

26 is a switching device for switching between trolley power source and battery power source.

In the figures, other detailed devices and instruments are omitted, and only those necessary for explaining the present invention are simply shown. 9th
The switching device 26 is shown in the figure while the trolley is running.

While the trolley is running, the current collector 12 receives power from the trolley, and the control device 23 applies controlled power to the electric motor 25 to run. Meanwhile, at the same time, power from the current collector 12 is supplied to the charger 21, and the battery 22 is floatingly charged. When traveling sideways, the switching device 26 is switched to the side B of traveling sideways. In this state, the traveling control device 23 is disconnected from the electric motor 25 and connected to the traversing control device 24.
In this state, the electric power of the battery 22 is controlled by the control device 24 and supplied to the electric motor 25. Since the trolley cannot receive power while it is running, the battery cannot be charged. The function of the charger 21 is determined so that the amount of discharge of the battery during running is charged while the battery is running. Next, one of the features of the present invention
The switching of the power supply, that is, the switching means of the switching device 26 will now be described.

Switching may be performed manually, but
This is done in conjunction with the rotation of the turntable. In other words, the probability of making an error is reduced, which contributes to improving the reliability of the entire device.One of the features of the present invention is that the power source is switched by engaging with the rotation of the turntable. 27 shows a power supply switching circuit, and 27 in the figure is a control power supply device which receives power from the traversing battery 22 both when the vehicle is traveling and when the vehicle is traversing.

CPT, CPB, CNT, CNB is a contactor switching device 2
It shows details of 6 inner cities. FIG. 9 is a simplified version of this. 26 in the figure is an interlocking contact operated by the operating solenoid 25. LST and B are the contacts fixed to the car body, and as shown in Figure 10'c',
It can be actuated by an actuator 28 fixed to the side. That is, at {b', the truck 2 is facing in the x-x' direction, that is, in the running direction, and in this state, the wheel T fixed to the vehicle body is operated by the actuator 28 fixed to the truck. When the truck 2 rotates 90 degrees and faces in the Y-Y direction, that is, in the traverse direction, the LSB fixed to the vehicle body is operated by the actuator 28 fixed to the truck. When the cart is being rolled, that is, when neither x-X' nor Y-Y' match, both contacts LST and peak B are not operating. LST and LSB are provided corresponding to each truck. That is, for a self-propelled vehicle having two two-axle, four-wheeled bogies, two are provided each, and for a self-propelled vehicle that has four two-axles and two-wheeled bogies, four are provided for each. FIG. 10 {b} shows a circuit for controlling the contactor coil, and the control power is received from the power supply device 27. As is clear from the figure, the target contact is activated and switched to the corresponding power source only when all the carts are facing the same direction and no other contactors are activated. Therefore, any manipulation such as switching the power supply before the rotation of all the bogies is completed is completely prevented (one of the conditions for allowing the vehicle to run is that the switching of the power supply is completed before the rotation of the bogies is completed. If this occurs, there is a risk of derailment). In this embodiment, the cart is rotated by a turntable. That is, a drive device is provided on the turntable side, and the cart is rotated by rotation of the turntable. The features of the present invention are not impaired even if a rotation drive device is provided on the cart and the turntable is rotated by the rotation of the cart. However, the power supply for the trolley must be taken from the battery or the trolley. Next, structural features for implementing the present invention will be described.

As a feature of the present invention, the method of automatically switching the power source in conjunction with the rotation of the turntable has been described above.

In order to achieve this, it is necessary to correct the running and transverse trajectory (
Even if the actual trajectory is laid with a straight line as the goal, a certain degree of bending cannot be avoided, and deviations from the true straight line are called deviations).
The gap between the wheel edge and the side of the wheel must be considered. This means that while running (or traversing), the bogie rotates, albeit slightly, relative to the vehicle body. Figure 1 explains the rotation of the cart due to the gap between the green wheel and the side surface of the wheel. Figure a shows the gap between the wheel edge and the side surface of the wheel, and is represented by tG. Figure b is a cross-section of A-skin A shown in figure a, and is a diagram illustrating that the carriage moves obliquely with respect to the traveling direction due to the gap G, and the oblique angle is △8'. Note that although the figure shows a two-axle, two-wheeled bogie, the same is essentially true for a two-wheeled, four-wheeled bogie. Gap G
If the distance is set to zero, skew is limited to only those caused by track misalignment, but it has been empirically proven that a certain amount of clearance is necessary for stable running. Therefore, slight rotation of the trolley while traveling cannot be avoided. As shown in Figure 10, Mituto Switch LST, LSB
It has already been mentioned that the detector detects the orientation of the truck with respect to the car body, and that the power source is switched based on this, and that the limit switch is operated by the actuating plate 2 provided on the truck.

In order to realize this feature, the limit switch must remain activated even if the trolley rotates slightly while running (or traversing) as long as the rotation is within an allowable value. If the limit switch goes off, the first
As is clear from the circuit shown in FIG. 0, the power is cut off, which is not desirable. In the present invention, the actuator 28 is configured as shown in FIG. 12 to eliminate the above-mentioned drawback. ``Figure a shows details of the LJ limit switch actuator fixed to the truck 2, and shows the state when the limit switch is not activated.

29 is a member that can slide on the inner surface of 28, and is a "spring 38".
'It's pushed out to the outside.

The maximum stroke when pushing 29 against the force of the spring 30 is X as shown.

Next is the allowable deflection amount of the spring 30. Figure b shows the state when the limit switch is operated by the actuator having the structure shown in figure a. In the figure, 29 is 1/1 of the total stroke.
2 The limit switch is activated when it is pushed in. As is clear from the figure, even if the relative positions of the vehicle body 1 and the truck 2 change within the range of C, the operating state of the limit switch does not change. The object of the present invention can be achieved in practical terms by setting the value of C to a value that corresponds to the slight rotation of the trolley that is allowed while the vehicle is running (or traversing). FIG. 13 shows an example in which a limit switch and a magnetic IJ switch are used to achieve the same purpose as in FIG. 12.

In the figure, 31' is the permanent magnet, 32 is the reed switch 33
is a magnetic plate made of iron. reed switch 32
``The permanent magnet 31 is fixed to the vehicle body 1.''
3 is fixed to the trolley 2. In operation, when the shield plate 33 is not present, the magnetic flux of the permanent magnet 31 passes through the reed switch 32, so the reed switch 32 is in operation. As long as the truck is neither running nor traversing, the reed switch 32 is in operation. If the magnetic flux from the permanent magnet 38 is suppressed by the shield plate 33 fixed to the truck when it is running (or traversing), the reed switch will not operate and the truck will move. It is possible to detect that the vehicle is in a running (or traversing) state. Even if the cart rotates slightly while traveling (or traversing);
In order to maintain the inoperative state of the switch, the purpose is achieved by setting the center W of the plate 33 to a value corresponding to the permissible rotation angle. Simple explanation of the drawings Figures 1 and 2 are schematic diagrams showing an electric vehicle on a general turntable, Figure 3 is a schematic diagram of an electric vehicle supplied with DC power from a trolley wire, and Figure 4 is a schematic diagram showing an electric vehicle on a general turntable. Figure 5 is a diagram showing the vicinity of the intersection when a three-phase overhead trolley wire is installed, Figure 5 is a diagram of the state when the trolley wire is laid on the ground, Figure 6 is a detailed diagram of the turntable part of Figure 6, Figure 7 is 1 is a schematic diagram showing one embodiment of the present invention, and Crab diagrams are diagrams showing examples of track arrangement to 9th diagram.
The figure is a block diagram showing the power supply system of the same embodiment, the Q diagram is a configuration diagram of the haze source switching circuit, Fig. 11 is a state diagram of the rotation of the cart due to the gap between the ring edge and the side surface of the wheel, and Fig. FIG. 12 is a block diagram of the actuator, and FIG. 13 is a diagram showing a bogie angle detection device using a limit switch and a magnetic reed switch.

Turtle...car body 2...bogie, 3. heart and blood, 4...turntable~ 5...center pin, S, 7...rail, turtle 2...Awadenki,
1 Tortoise...Trolley wire ~ 21...Charger, 22...Battery~ 23...Motor control device, 24...Motor control device, 25...Electric motor 26...Switching device, 27.
... Control power supply device, 28... Actuator, 30, . ．． Spring, 31... Permanent magnet, 32... Reed switch, 33... Magnetic shield, plate. Figure 1 Figure 4 Figure 2 Figure 3 Figure 5 Figure 6 Figure l3 Figure 7 Daytime diagram Figure 9 Figure l1

Claims (1)

[Scope of Claims] 1. In an electric self-propelled vehicle that has a cart that can change direction, and this cart is changed direction by a turntable and travels and traverses, the electric power is supplied from the trolley while traveling or traversing. While receiving, traversing or running, power is supplied from the battery mounted on the vehicle, and the battery is charged while receiving power from the trolley. A power supply device for an electric vehicle that switches a corresponding power source to a subsequent one when all bogies are in a running state or a traversing state based on the opening state of a table. 2 The turning state of the turntable is detected by installing it on the car body side, using a limit switch and its actuator or reed switch, a permanent magnet and its shield plate, and responding only when all the bogies are in the running or traversing state. A limit switch is applied to connect the power supply, disconnect it from any power source when the trolley is not in any state, and maintain the switched state even if the trolley rotates slightly while traveling or traversing. For those that use a combination of a permanent magnet and a reed switch, use an actuator that has an escape mechanism with a combination of a spring and a slider, and for those that use a combination of a permanent magnet and a reed switch, an actuator that is placed between the permanent magnet and the reed switch. A power supply device for an electric vehicle that detects the direction of a bogie and switches the power source using a value set to a value corresponding to the permissible rotation angle of the bogie while traveling or traversing the width of a shield plate.