JP2005161974A - Railway linear motor truck, and secondary side conductor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a railway linear motor truck having excellent energy efficiency capable of saving the power consumption. <P>SOLUTION: The railway linear motor truck 1 to be driven by a primary side coil 3 and a secondary side conductor 4 comprises a frame member 21 and a supporting wheel 22, and further comprises the primary side coil 3 which is arranged on a main spindle 221 of the frame member or the supporting wheels via a suspension device 32, and a space maintaining wheel 31 protruded downwardly from a lower side of the primary side coil. The magnitude of the perpendicular load applied to the clearance maintaining wheel can be adjusted by adjusting the suspension. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a railway linear motor carriage and a secondary side conductor that travel by a linear motor.

Conventionally, a rotary motor system has been mainly used for railway carts. However, because the rotary motor section is large and the entire vehicle becomes large, the tunnel excavation cross-sectional area becomes large and the construction cost increases when used in a subway. There are also problems such as steep slopes and steep curve alignment.
On the other hand, railcars using linear motors can be downsized, and can handle steep slopes and sharp curves. It has come to be adopted in the subway etc.
Currently, linear induction motor (LIM) type linear motor carts for railways used in Toei subways, etc., have a primary coil b attached to the cart side and a secondary conductor c (reaction plate) attached to the track side. Propulsion is obtained through interaction. And the weight of a vehicle body, a passenger, etc. is supported by the support rail e through the support wheel a.
The smaller the distance between the primary side coil b and the secondary side conductor c (hereinafter referred to as the gap), the larger the driving force can be obtained, and the power consumption can be saved by high energy efficiency. However, since the size of the gap d changes depending on the wear of the support rail e or the support wheel a, the vertical movement of the railway vehicle due to the increase or decrease of passengers, or the inclination at the curved portion, the primary coil b and the secondary conductor c In order to avoid a contact accident, the gap d is set wider. As a result, there is a problem that energy efficiency is lowered and power consumption is increased.
On the other hand, in Patent Document 1, a fluid is interposed between the primary coil b and the secondary conductor c, or a gap, a wheel, a roller, or the like is interposed to maintain the gap d at a constant interval. A method is disclosed.
JP-A-7-231515

The above-described linear motor cart of Patent Document 1 employs a configuration in which the linear motor (primary coil b) is installed on the track side and the reaction plate (secondary conductor c) is suspended from the cart by a suspension mechanism. . In this way, with the method of loading all of one vertical load on the other, the pressing force hinders the propulsive force, so it is not a case of hanging a lightweight object such as a reaction plate or a small linear motor. It cannot be adopted. On the other hand, the primary coil b attached to the railway linear motor carriage is heavy and cannot adopt the same configuration as that of Patent Document 1.

In order to solve the problems as described above, the railway linear motor carriage and the secondary conductor of the present invention are a railway linear motor carriage driven by a primary coil and a secondary conductor, and are supported by a frame member. A suspension coil including a primary coil disposed on a main shaft of the frame member or the support wheel via a suspension device, and a spacing wheel that protrudes below a lower surface of the primary coil. It is possible to adjust the magnitude of the vertical load acting on the spacing wheel by adjusting the distance. Here, the distance maintaining wheel can be attached by protruding forward and backward from the primary coil.
A railway linear motor carriage driven by a primary side coil and a secondary side conductor, comprising a frame member and a support wheel, and a primary side coil supported by a main shaft of the frame member or the support wheel, and the primary side A distance holding wheel protruding below the lower surface of the coil, and the secondary side conductor is in contact with the distance holding wheel by a vertically movable mechanism provided in the secondary side conductor. . Here, the secondary conductor that forms the track for running the railway linear motor carriage can be configured to be movable downward or upward depending on the magnitude of the acting vertical force.

The railway linear motor carriage and the secondary conductor of the present invention can obtain at least one of the following effects by means for solving the above-described problems.
<1> The gap between the primary side coil and the secondary side conductor can be kept at a small interval. For this reason, it is excellent in energy efficiency and can save power consumption.
<2> The primary coil and the secondary conductor do not collide by interposing the spacing wheel.
<3> The magnitude of the vertical load acting on the spacing wheel can be adjusted by adjusting the suspension device for suspending the primary coil. For this reason, even when the pressing force of the spacing wheel is increased due to wear of the supporting wheel or the supporting rail, the pressing force can be returned to a predetermined magnitude so that the spacing wheel does not interfere with traveling. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<1> Linear Motor Carriage The linear motor single car is provided with a frame member 21 for installing a railway vehicle body and support wheels 22 for supporting a load acting on the linear motor car 1.
The railway linear motor carriage 1 includes a frame-mounted carriage that attaches the primary coil 3 to the frame member 21 and a spindle-mounted carriage that attaches to the spindle 221 of the support wheel 22. Can also be adopted.
The secondary conductor 4 called a reaction plate is disposed between two support rails 5 laid in parallel. In a railway linear motor, the secondary side conductor 4 having a low installation cost is usually installed on the track side where the extension distance is long and the usage amount is large.

<2> Suspension Device The suspension device 32 is a device for attaching the primary side coil 3 to the frame member 21 or the main shaft 221 of the support wheel 22.
A known suspension mechanism such as a spring can be used as the main member of the suspension device 32. Most of the weight of the primary coil 3 is supported by the frame member 21 or the main shaft 221 of the support wheel 22 via the suspension device 32. That is, a load for bringing the spacing wheel 31 described later into contact with the secondary conductor 4 is left, and the other weights are supported by the support wheels 22.
The suspension device 32 is a device that can adjust the magnitude of the vertical load acting on the spacing wheel 31. For example, the height at which the spacing wheel 31 is always in contact with the secondary conductor 4 and the height at which the lower surface of the primary coil 3 is not in contact with the secondary conductor 4 without the spacing wheel 31, or The device can be adjusted to a height that can be touched. That is, if the primary side coil 3 is fixed to the frame member 21 or the main shaft 221 so that the movement in the vertical direction is not changed, the support wheel 22 and the support rail 5 are gradually worn, so the secondary side conductor 4 and the primary side coil The gap of 3 is gradually reduced. As a result, the vertical load acting on the spacing wheel 31 becomes large, and it is necessary to take measures for mounting the spacing wheel on a large scale. For this reason, the height of the primary coil 3 is adjusted by the height adjustment mechanism of the suspension device 32 at the time of maintenance or the like, and an optimum vertical force (pressing force) is generated on the spacing wheel 31. Here, the height adjustment mechanism of the suspension device 32 can be configured by a known screw type adjustment mechanism that moves up and down by the rotation of a screw, an additional spring, or a replaceable spring.
Even if the suspension device 32 is damaged, a lifting tool can be provided separately (not shown) so that the primary coil 3 does not fall.

<3> Interval Holding Wheel The interval holding wheel 31 is a rotation-type moving body that protrudes downward from the lower surface of the primary side coil 3. For example, wheels or rollers can be used. By projecting the spacing wheel 31 from the lower surface of the primary coil 3, the primary coil 3 does not directly contact the secondary conductor 4.
The distance maintaining wheel 31 can be supported by, for example, a frame projecting forward and backward of the primary coil 3. It can also be attached to the lower surface of the primary coil 3. Also, a vertical height adjustment mechanism can be provided to adjust the size of the gap.
The distance maintaining wheel 31 generates a vertical force that always keeps the distance maintaining wheel 31 and the secondary conductor 4 in contact during travel. As a result, the gap between the primary side coil 3 and the secondary side conductor 4 is kept at a minimum distance, and the energy efficiency is improved and the risk of contact between the two is eliminated.

<1> Frame Mounted Cart FIG. 1 is a perspective view of a frame mounted cart that supports the primary coil 3 with a frame member 21. In this case, one end of the suspension device 32 is fixed to the frame member 21, and the primary coil 3 is attached to the other end of the suspension device 32. By causing a part of the weight of the primary coil 3 suspended by the suspension device 32 to act on the spacing wheel 31 as a vertical load, the spacing wheel 31 can continue to contact the secondary conductor 4. The vertical amplitude of the linear motor carriage 1 at the time of passenger boarding / exiting and the curved portion is absorbed by the suspension mechanism of the suspension device 32.

<2> Spindle-mounted cart FIG. 2 is a front view of a spindle-mounted cart that supports the primary coil 3 by the main shaft 221 of the support wheel 22. In this case, one end of the suspension device 32 is fixed to the main shaft 221, and the primary coil 3 is attached to the other end of the suspension device 32. Also in the spindle-mounted carriage, the gap between the primary coil 3 and the secondary conductor 4 is maintained at a constant interval, as in the frame-mounted carriage described above, so that the linear motor carriage 1 is in an energy efficient state. Can be run.

In Example 2, an example in which the secondary conductor 4 is configured to be movable up and down will be described with reference to FIG.
In the second embodiment, the primary coil 3 may be fixed to the frame member 21 and the main shaft 221 as in the prior art. A configuration different from the conventional linear motor carriage for railroads is that it has a distance maintaining wheel 31. The same thing as the structure mentioned above can be used for the space | interval holding | maintenance wheel 31. FIG.
A vertically movable mechanism 41 such as a spring is disposed on the secondary conductor 4 so that the secondary conductor 4 can move downward or upward depending on the magnitude of the vertical force acting on the secondary conductor 4. That is, the secondary conductor 4 is always pressed against the distance maintaining wheel 31 with a predetermined force, and is raised when the primary coil 3 moves away from the secondary conductor 4, and the opposite direction (the direction in which the gap decreases). ), When the primary coil 3 moves, it is lowered. As a result, an excessive vertical force does not act between the spacing wheel 31 and the secondary conductor 4, and the spacing wheel 31 does not hinder propulsion. Moreover, if the secondary side conductor 4 is always in contact with the distance maintaining wheel 31, the minimum distance between the primary side coil 3 and the secondary side conductor 4 is maintained, and the linear motor carriage 1 can be efficiently driven.

The perspective view of the Example of the linear motor carriage for railroads of this invention. The front view of the Example of the linear motor carriage for railroads. The front view of the Example of the secondary side conductor of this invention. Explanatory drawing of the Example of the conventional linear motor carriage for railroads.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Linear motor cart 21 ... Frame member 22 ... Supporting wheel 221 / Spindle 3 ... Primary side coil 31 ... Spacing wheel 32 ... Suspension device 4 ... Secondary side conductor 41 ... Up / down Movable mechanism

Claims (4)

A railway linear motor carriage driven by a primary coil and a secondary conductor,
It consists of a frame member and support wheels,
A primary coil disposed on a main shaft of the frame member or the support wheel via a suspension device, and a spacing wheel that protrudes below the lower surface of the primary coil,
The vertical load acting on the spacing wheel can be adjusted by adjusting the suspension device,
Railway linear motor cart.
The railway linear motor carriage according to claim 1,
The spacing wheel is attached by protruding forward and rearward from the primary coil,
Railway linear motor cart.
A railway linear motor carriage driven by a primary coil and a secondary conductor,
It consists of a frame member and support wheels,
A primary coil supported by the frame member or the main shaft of the support wheel, and a spacing wheel that protrudes below the lower surface of the primary coil,
The secondary conductor is in contact with the distance maintaining wheel by a vertically movable mechanism provided in the secondary conductor,
Railway linear motor cart.
A secondary conductor that forms a track for running the railway linear motor carriage according to claim 3,
The secondary conductor is movable downward or upward depending on the magnitude of the vertical force acting on the secondary conductor,
Secondary conductor.

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