JP2005218185A - Railroad vehicle for freight transportation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To curtail a large loss as the whole of a transportation time arising from work, etc. such as cut off, shifting, and connection, which occurs in replacement work accompanyied by the composition change of a railroad car or composition construction work, etc. performed at first in a premise. <P>SOLUTION: A railroad car 1 towed by a locomotive 3 is equipped with motors 13a and 13b, a small-sized driving means 12 composed of a power converting means 122 for driving the motors and a secondary battery 121 for supplying the power converting means 122 with power, and a power receiving means 19. It receives power via a power converting means 33 and a pair of power lines 5 and the power receiving means 19 from the locomotive 3, and charges a secondary battery 121 at usual travelling. The railroad car 1 for freight transportation is self-propelled by the small-sized driving means 12 in the case of the composition change of the railroad car 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a railway vehicle for freight transportation, and relates to a self-propelled freight car provided with vehicle driving means comprising an electric motor, an inverter device, and a secondary battery for each freight car.

  Since a freight transportation railway vehicle is usually composed of one locomotive and a plurality of freight cars towed by it, it is excellent in that it can save energy and can be transported in large quantities at high speed.

  However, for example, as shown in FIG. 7, when the destination is towing a variety of freight cars 300 different from A, B, and C, it is necessary to reorganize the wagons for each direction when reaching the X and Y points. is there. In other words, at the point X, the freight car 301 in the A and B directions and the freight car 302 in the C direction are used, and further, at the Y point, the car is rearranged into the freight car 303 in the A direction and the freight car 304 in the B direction.

In such a case, conventionally, locomotives or dedicated vehicles are moved one by one, and replacement work such as puzzles is performed over time.
To the inventor: Please provide us with patent documents related to the prior art.

  In the freight transportation railway vehicle, not only the replacement work accompanying the reorganization of freight cars with different destinations as described above, but also the work of disconnecting, moving, and connecting the freight cars at the time of the first organization construction work on the premises. As a result, a large loss was finally caused as a whole in the transportation time.

  An object of the present invention is to provide a self-propelled railway vehicle for freight transportation capable of quickly replacing a freight transportation railway vehicle in order to reduce a loss of transportation time in the freight transportation railway vehicle.

  In order to achieve the above object, in the freight transportation railway vehicle according to the present invention, the freight transportation railway vehicle is driven by a vehicle composed of a small-sized motor, an inverter device, and a secondary battery whose maximum output is about 1/10 that of a commuter train. Equipped with equipment, it enables self-propelled transportation of freight rail vehicles.

  Further, the freight transportation railway vehicle according to the present invention is equipped with wireless communication means for controlling the vehicle drive device so that the freight car can be replaced with a minimum of manual labor.

  Specifically, the present invention relates to a freight transport railway vehicle towed by a locomotive, and includes a motor, a power conversion means for driving the motor, and a vehicle driving means comprising a secondary battery for supplying power to the power conversion means. Equipped with.

  Further, the present invention provides power receiving means in the freight transportation railway vehicle, and receives power from the locomotive power source through power conversion means, a pair of power lines and the power receiving means, and Charged when driving.

  Furthermore, according to the present invention, when the train connected to a plurality of the freight transport railway vehicles is rearranged, the freight transport railway vehicles are caused to self-run by the vehicle driving means.

  The present invention relates to a freight transport railway vehicle towed by a locomotive, comprising: a motor, a power conversion means for driving the motor, a secondary battery for supplying power to the power conversion means, and a communication means. Prepared. Further, according to the present invention, in the freight transportation railway vehicle, the communication means is a wireless communication means, and the vehicle driving means is controlled by wireless communication.

  Furthermore, in the present invention, the power conversion means is an inverter device, and the electric motor is induction-driven.

  According to the present invention, in a railcar for cargo transportation towed by a locomotive equipped with a small-scale drive device having a secondary battery and a small-sized electric motor, the secondary battery is charged during normal travel, If it is necessary to move the freight transport railway vehicle separately from the vehicle, it can be moved freely by a small-scale drive device provided on the freight transport rail vehicle itself, which occurs when the freight car is replaced. Loss of transportation time can be reduced.

  According to the present invention in which the railcar for freight transportation is further provided with a control means by wireless communication, the movement of the freight car can be controlled by a wireless device such as a personal computer, a portable terminal, a mobile phone, etc. It can move efficiently.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a railway vehicle for freight transportation according to the present invention will be described with reference to the drawings. FIG. 1 shows the configuration of a train in which freight transportation railway vehicles according to the present invention are connected. In the present embodiment, the following description will be given on the assumption that one DC overhead locomotive pulls n freight railway vehicles (hereinafter referred to as freight cars) and the locomotive includes two electric motors.

  A train consisting of a locomotive according to the present invention and a plurality of wagons pulled by the locomotive drives a plurality of wagons 1-1 to 1-n having a small-scale drive device 12 to drive a current collector 31 and a locomotive. It is constructed by being pulled by a locomotive 3 having a device 32.

  A specific configuration of the small-scale drive device 12 will be described with reference to FIG. The locomotive 3 includes a current collector 31, a locomotive drive device 32 that drives and controls the electric motor with electric power received from the overhead line by the current collector, and a DC / DC converter 33 that DC / DC converts received power or regenerative power. And induction motors 34a and 34b. In the locomotive 3, the power received from the DC overhead line 9 through the current collector 31 is branched into the locomotive drive device 33 and the DC / DC converter 33, and the locomotive drive device 32 converts the DC power into AC power. The output is connected to induction motors 40a and 40b.

  The output of the DC / DC converter 33 is supplied to the small-scale drive device 12 of each freight car 1-1 to 1-n via the power line 5. The small-scale drive device 12 converts DC power into AC power, and the output is supplied to small-sized induction motors 13a and 13b, respectively.

  On both connecting surfaces of the freight car 1, receiving plugs 19 a and 19 b of the power supply line 5 are provided, and the receiving plugs 19 a and 19 b are connected by the lead-in line 14.

  The small-scale drive device 12 includes a secondary battery 121, an inverter device 122, an inverter drive device 123, a charge switch 124, a start switch 125, a direction switch 126, and an electric motor current detection means 127. Is done.

  The + side of the output of the DC / DC converter 33 of the locomotive 3 is connected to the + side of the secondary battery 121 and the inverter device 122 via the + side of the power line 5 and the charging switch 124. Further, the negative side of the output of the DC / DC converter 33 is connected to the negative side of the power supply line 5 and the negative side of the secondary battery 121 and is connected to the inverter device 122. The output of the inverter device 122 is two units. It is connected to induction motors 13a and 13b. The inverter control device 123 receives the DC voltage Edc, the secondary battery voltage Eb, the motor current Im, the start switch 125 and the direction switch 126 as inputs, and outputs a drive signal LB for the charge switch 124 and a drive signal Sig for the inverter device 122.

  The operation of the inverter control device 123 of the small-scale drive device 12 shown in FIG. 2 will be described using the flowchart of FIG. First, the inverter control device 123 determines whether or not the output Edc of the DC / DC converter 33 is greater than or equal to a predetermined value (S100). If the result is Yes, the overhead wire 9 is connected and it is determined that the operation state is normal. .

  Next, the inverter control device 123 determines whether or not the secondary battery voltage Eb is equal to or higher than a predetermined value (S101). If the result is Yes, the inverter control device 123 determines that the secondary battery 121 is sufficiently charged, and the charge switch 124 is turned off (S102). However, if the determination result in step S101 is No, it is determined that the secondary battery voltage has decreased, and the charging switch 124 is turned on to charge the secondary battery 121 to a predetermined voltage (S103).

  On the other hand, if the determination result in step S100 is No, it is determined that the freight car 1 is disconnected from the locomotive 3 and can move freely, the state of the activation switch 125 is taken in, and it is determined whether or not it is activated (S104). If the result is Yes, it is determined that the system is activated, and the state of the direction switch 126 is taken in to determine whether the vehicle is moving forward or backward (S105). If the result is Yes, it is determined that the vehicle is moving forward, and the forward movement process is executed (S106). If the determination result in step S105 is No, it is determined that the vehicle is in reverse and reverse processing is executed (S107).

  If the determination result in step S104 is No, a stop process is executed (S108).

  As described above, according to the present embodiment, the secondary battery is charged during normal traveling, and when it is necessary to move the freight car, the freight car moves freely by the small-scale driving device provided in the freight car itself. Therefore, it is possible to reduce the loss of transportation time that occurs in the replacement work of freight cars.

  In the present embodiment, the charging switch 124 is opened during normal driving so that the small-scale drive device 12 is not used. However, the small-scale drive device 12 of the freight car 1 is assisted when starting the train or climbing a hill. By using it as an objective drive, the maximum output of the locomotive drive device may be reduced to reduce the size, or the output may be controlled to extend the life.

  Alternatively, both of the charging of the secondary battery 121 of the small-scale drive device 12 may be set to about 50%, and the regenerative energy of the locomotive drive device 32 may be absorbed when the overhead wire 9 is in a light load state.

  A second embodiment relating to the small-scale drive device of the present invention will be described with reference to FIGS. This embodiment eliminates the DC / DC converter 33 of the locomotive 3, the lead-in line 14 of the freight car 1, and the power line 5 between the locomotive 3 and the freight car 1 from the embodiment shown in FIG. 2. Yes. In the figure, the same symbols as those in FIG.

  In this embodiment, the secondary battery 121 is charged by the regenerative energy of the freight car 1. That is, as shown in the process flowchart of FIG. 5, first, the inverter control device 123 determines whether or not the secondary battery voltage Eb is equal to or lower than a predetermined value (S110). When this result is Yes and the speed of the freight car 1 is estimated and the freight car 1 is being pulled by the locomotive 3 and traveling, it is determined whether or not the speed is a predetermined value or more (S111). When this result is Yes, the regenerative process is executed to charge the secondary battery (S112). If the determination result in step S111 is No, the regeneration process is bypassed and charging is not performed.

  Further, when the determination in step S110 is No and the freight car 1 is disconnected from the locomotive 3 and is in a state where it can be moved independently, the same processing as in step S104 and subsequent steps in FIG. 3 is performed (S104 to S108), Then move.

  Needless to say, the speed can be easily estimated from the motor current Im by using a recent speed sensorless vector control technique.

  A third embodiment of the small-scale drive device in the freight transportation railway vehicle according to the present invention will be described with reference to FIG. Note that the same symbols as those in FIG. In FIG. 6, instead of the start switch 125 and the direction switch 126 for inputting a command to the inverter control device 123 provided in the small-scale control device 12, an antenna interface circuit 128 having the antenna 15 is provided. The start command and the direction command are instructed by radio.

  The antenna interface circuit 128 can control traveling more safely by transmitting a signal indicating the traveling speed of the freight car to the operator.

  According to this embodiment, since the movement of the freight car can be controlled by a wireless device such as a personal computer, a portable terminal, or a mobile phone, a large number of freight cars can be moved efficiently by a small number of people.

  In the present invention, the secondary battery mounted on the freight car is charged by using the electric power from the electric locomotive or the regenerative energy of the freight car. The secondary battery can be charged by the power received from the battery.

  In the present invention, an example in which two induction motors are mounted on a freight car has been described, but the number of motors may be one or a DC motor. When the electric motor is a direct current motor, the direct current motor can be driven and controlled by using the inverter device of the small-scale drive device as a power conversion means including a DC / DC converter.

The figure which shows the structure of the rail vehicle for cargo transportation to which this invention is applied. The figure which shows the 1st Embodiment of this invention. 5 is a flowchart showing the operation of the small-scale drive device 12. The figure which shows the 2nd Embodiment of this invention. The flowchart which shows operation | movement of the small scale drive device 12 of the Example of FIG. The figure which shows the structure of the 3rd Example of this invention. The figure explaining the subject of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Freight car 12 ... Small scale drive device 13 ... Induction motor 121 ... Secondary battery 1222 ... Inverter device 123 ... Inverter control device 124 ... Charge switch 125 ... Starting switch 126 ... Direction switch 127 ... Electric motor current detection means 128 ... Interface circuit 14 ... Lead-through line 15 ... Antenna 19 ... Receptacle 3 ... Locomotive 32 ... Locomotive drive device 33 ... DC / DC converter 34 ... Induction motor 5 ... Power line 9 ... Overhead wire

Claims (6)

In freight transport railway vehicles towed by locomotives,
A freight transport railway vehicle comprising: an electric motor; power conversion means for driving the electric motor; and vehicle drive means comprising a secondary battery for supplying electric power to the power conversion means.   2. The power receiving device according to claim 1, further comprising a power receiving device that receives power from a power source of the locomotive via a power conversion device, a pair of power lines and the power receiving device, and charges the secondary battery during normal travel. Railway vehicle for freight transportation.   2. The freight transport railway vehicle according to claim 1, wherein when the train connected to a plurality of the freight transport railway vehicles is rearranged, the freight transport railway vehicle is self-propelled by the vehicle driving means. In freight transport railway vehicles towed by locomotives,
A freight transportation railway vehicle comprising: an electric motor; power conversion means for driving the electric motor; vehicle drive means comprising a secondary battery for supplying power to the power conversion means; and communication means.   5. The freight transportation railway vehicle according to claim 4, wherein the communication means is wireless communication means, and the vehicle driving means is controlled by wireless communication.   5. The railway vehicle for freight transportation according to claim 1, wherein the power conversion means is an inverter device.

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