JPS6315602A - Linear motorcar - Google Patents

Abstract

PURPOSE:To reduce an impact force given by a linear motor to a rail by fitting a truck frame with a linear motor to have the linear motor seive as an above- spring weight. CONSTITUTION:Between a truck frame 10 and a linear motor 11, a vertically moving mechanism 12 is furnished so that the linear motor 11 can move up and down relative to the truck frame 10. Also, a distance detection mechanism 13 measuring a space between the linear motor 11 and a reaction plate 7 laid on the ground is furnished at a part of the linear motor 11. Moreover, a car body 1 is furnished with a control mechanism 14 holding constant a space between the linear motor 11 and the reaction plate 7 detected by the distance detection mechanism 13. With this, the linear motor neither works as under- spring weight nor gives a large impact force to a rail in a high-speed operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a linear motor car used in a railway vehicle.

[Conventional technology]

Traditionally, linear motor cars have been used as railway vehicles.
As shown in FIGS. 3 and 4.

FIG. 3 is a side view of the main parts showing an example of the mounting part of the linear motor in the trolley, and FIG. 4 is a front view of FIG. 3.
l is the car body, 2 is the bogie work, 3 is the wheels, 4 is the axle, 5 is the linear motor, 6 is the bearing, 7 is the reaction plate, 8
is a rail.

In FIGS. 3 and 4, the linear motor 5 is supported via bearings 6 on axles 4 at the front and rear in the traveling direction of the vehicle. The reaction plate 7 is laid on the ground side facing the linear motor 5, is held at a predetermined constant distance from the lower surface of the linear motor 5, and is energized to the linear motor 5. The vehicle is propelled by the electromagnetic force generated between the linear motor 5 and the reaction plate 7. Here, on the top of the trolley work 2,
A vehicle body 1 is provided. Further, wheels 3 provided on the side of the bogie work 2 are engaged with rails 8 laid on the ground side.

[Problem that the invention seeks to solve]

However, since the linear motor 5 is supported by the axle 4, the weight of the linear motor 5 is the unsprung weight, which inevitably increases and has the disadvantage of generating a large impact force against the rail 8 at high speeds. there were. Furthermore, as the wheels 3 wear out, the distance between them and the reaction plate 7 narrows, changing the characteristics of the linear motor 5. Therefore, it is necessary to lift the linear motor 5 to correct the wear of the wheel diameter. Ta.

The present invention was devised in view of the above-mentioned drawbacks, and its objectives are to prevent the linear motor from becoming unsprung heavy, to prevent large impact forces from being applied to the rail at high speeds, and to prevent the wheels from wearing out. To provide a linear motor car in which there is no need to lift a linear motor.

[Means for solving problems]

The means to achieve this purpose are to provide a vertical movement mechanism between the bogie frame and the linear motor that allows the linear motor to move in the vertical direction relative to the bogie frame, and a gap between the linear motor and a reaction plate laid on the ground. A distance detection mechanism that measures
It is equipped with a control mechanism that detects a change in the distance between the linear motor and the reaction plate due to wheel wear and controls the distance to be kept constant.

Hereinafter, the linear motor car of the present invention will be explained based on the drawings, and its operation will also be explained in detail.

〔Example〕

Fig. 1 is a side view of the main parts showing one embodiment of the linear motor car of the present invention, Fig. 2 is a front view of Fig. 1, and the same reference numerals as in Figs. 3 and 4 are the same. Since it has a configuration and function, its explanation will be omitted.

In FIGS. 1 and 2, 10 is a truck workpiece, 11 is a linear motor, 12 is a vertical movement mechanism, 13 is a distance detection mechanism, and 14 is a control mechanism.

That is, a vertical movement mechanism 12 is provided between the bogie workpiece 10 and the linear motor 11 so that the linear motor 11 can move up or down relative to the dolly workpiece 10. Further, a part of the linear motor 1 is provided with a distance detection mechanism 13 that measures the distance between the linear motor 11 and the reaction plate 7 installed on the ground. Further, the linear motor 1 and the rear axis 1 detected by the distance detection mechanism 13 are further detected. The vehicle body 1 is equipped with a control mechanism 14 that maintains a constant distance from the template 7 even when the distance between the vehicle body 1 and the plate 7 changes.

Thus, in the linear motor car constructed in this manner, the linear motor 11 and the reaction plate 7 are constantly operated against vertical displacement of the bogie workpiece 10 that occurs when the vehicle is running, or a downward movement of the bogie workpiece lO due to wheel wear. The distance detection mechanism 13 measures the distance to keep the distance constant. When the interval is on the plus side, that is, when the interval is narrower than the predetermined interval, a rising signal is given from the control mechanism 14 to the vertical movement mechanism 12,
The linear motor controller 11 rises to a predetermined interval and then stops. If it is on the negative side, the interval widens, and a descending signal is similarly applied, causing the linear motor 1 to descend to a predetermined interval and then stop.

In this way, the distance between the linear motor 1 and the reaction plate 7 is always kept constant.

Here, the vertical movement mechanism 12 may be of an electric type or a hydraulic type. Further, the distance detection mechanism 13 uses a non-contact mechanism that uses light, ultrasonic waves, or the like.

〔Effect of the invention〕

As explained above, according to the present invention, the linear motor 11
Since the linear motor 11 is mounted on the bogie body 10j, the unsprung weight of the linear motor 11 is reduced, and the unsprung weight is significantly reduced compared to the conventional one.The impact force applied to the rail 8 is small, making it possible to run the vehicle at high speed. Ta.

Furthermore, since it has a mechanism that moves the linear motor 11 in the vertical direction and maintains a constant distance from the reaction plate 7, the linear motor 11 can be adjusted against vertical displacement of the bogie work 10 during traveling and wheel wear. This eliminates the trouble of adjusting the distance between the reaction plate 7 and the linear motor 11, which allows the linear motor 11 to be used in its optimum characteristic state at all times.
This has great benefits in terms of vehicle operation and maintenance.

[Brief explanation of drawings]

FIG. 1 is a side view of main parts showing an embodiment of a linear motor car of the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a side view of main parts showing an example of a conventional linear motor car, and FIG. The figure is a front view of FIG. 3. 1...car body, 2.10...--truck body,
5, 11... Linear motor, 7... Reaction plate, 12... Vertical movement mechanism,
13... Distance detection mechanism, 14... Control mechanism.

Claims (1)

[Claims] a vertical movement mechanism provided between a bogie workpiece attached to the lower part of the vehicle body and a linear motor provided at the lower part of the bogie workpiece so that the linear motor can move in the vertical direction with respect to the bogie workpiece; A distance detection mechanism that measures the distance between the linear motor and the reaction plate installed on the ground;
A linear motor car comprising: a control mechanism that controls the vertical movement mechanism to maintain a constant distance between the linear motor and a reaction plate laid on the ground using the distance detection mechanism.