JPS62122863A - Truck for linear motor drive car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bogie for a linear motor-driven vehicle that facilitates turning on a small radius of curvature track and has a simplified overall structure.

[Conventional technology]

Conventionally, wheel sets for linear motor-driven vehicle trucks have a structure in which wheels on both sides are integrated via an axle. Further, the linear motor held by the holding frame is mounted on the axle via a bracket, a movable joint, a crossbeam, and a shaft holder, resulting in a complicated structure. For this reason, it is not only difficult to assemble and disassemble, but also difficult to maintain, inspect, and repair. In addition, there is no function to deal with changes in the positional relationship (gap) between the linear motor and the reaction plate due to wear of the wheels, cutting correction of the wheel diameter, etc.

That is, the conventional linear motor-driven vehicle bogie is shown in a plan view, a sectional view taken along the line D-D, and a cross-sectional view taken along the line E-
It is configured to show a cross-sectional view E.

In the figure, 30 indicates the axle 2 on both sides and the integrated axle 31.
For example, it is a foil set that is completely integrated by shrink fitting. Two wheelsets 30 are shown here. The bogie frame 10 is placed on the wheelset 30 via a bearing 32 that supports the inner sides of both axles 2 of the single weight shaft 31, a shaft spring that movably holds this bearing, and the like.

That is, between the pair of bearings 32, there is a lateral stiffness 34 fixed by welding or the like. A movable joint 38 is constructed by fitting a perforated member 37 into a protruding pin 35 on the upper surface of the intermediate portion of the horizontal stiffener 34 via an annular elastic body 3G. The bogie frame 10 is mounted on the wheelset 30 via the movable joint 38.

The linear motor 20, which is composed of an iron core 18, a winding 19, etc., is held by a holding frame 33, and a bracket 39,
It is mounted on the single weight shaft 31 via the movable joint 38, the horizontal stiffener 34, and the bearing 32.

With this structure, the single weight shaft 31 can rotate within a certain range within a horizontal plane with respect to the truck frame 10. With such a structure in which the single weight shaft 310 can be rotated, it is possible to improve the passing performance of the bogie on a curved track.

[Problem that the invention seeks to solve]

However, as described above, the holding frame 33 that holds the linear motor 20 is supported via the bearing 32, the horizontal stiffener 34, the specially structured movable joint 38, etc., and therefore its structure is quite complicated.

In addition, since the wheels 2 on both sides of the bogie are completely integrated via the axle 31, when passing through a track with a small radius of curvature, the axle 2 and the axle 2 and There were problems such as track wear, vibration and noise generation.

The present invention eliminates such problems and provides a bogie for a linear motor-driven vehicle with a simple structure that can smoothly turn on a trajectory with a small radius of curvature where the difference in required circumferential speed between the left and right axles increases. The purpose is to

At the same time, we have adopted a method for mounting the linear motor that does not apply unreasonable stress to it, improving the followability of the wheels when passing through a curved track, thereby improving running stability and simplifying its structure. Furthermore, it is an object of the present invention to realize a structure that can easily correct the gap between the linear motor and the reaction plate due to wheel wear, etc., and can fully exhibit its characteristics.

[Means for solving problems]

The present invention incorporates a clutch into a part of the axle that connects the wheels provided on both sides of the bogie frame, and detects whether the wheels are inside or outside the self-steering range from the bogie rotation angle relative to the vehicle, which changes in accordance with the radius of curvature of the track. , when the cart rotation angle is within a self-steering range, the wheels on both sides are connected and integrated via the clutch, and when the cart rotation angle is outside the self-steering range, the wheels on both sides are separated via the clutch. It is characterized by this.

[Effect]

Thus, according to the present invention, the wheels on the inner track side and the outer track side rotate integrally within the self-steering range by the steering mechanism incorporating the above-mentioned clutch, and the radius of curvature of the track is small and self-steering is possible. If the wheel is out of range, the clutch disconnects the wheels on the inner and outer raceways, allowing each wheel to rotate freely.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of a linear motor-driven vehicle bogie according to an embodiment, FIG. 2 is a side view thereof, FIG. 3 is an A-A1gi plane view showing the movable joint part in FIG. 1, and FIG. 1 is a sectional view taken along line B-8 showing the mounting portion of the wheelset in FIG. 1.

In the figure, reference numeral 1 denotes a wheelset constituted by wheels 2 on both sides, an axle 3.4 of each wheel 2, and an electromagnetic clutch 5. As shown in FIG. 6, the Ti electromagnetic clutch includes a rotor 5a attached to one axle 3, an armature 5b attached to the other axle 4, and these rotors 5a.
A feed coil 5C1 that controls the connection and disconnection of the armature 5b and the housing 5 that integrally houses these.
d. By means of this electromagnetic clutch 5, the left and right wheels 2 can be integrated into one, or left and right can be separated independently.

However, two sets of wheel sets 1 configured in this manner are provided here. As shown in an enlarged sectional view in FIG. 4, the wheel set 1 is held in a pair of left and right axle boxes 8 integrally formed with an axle box frame 11 via a bearing 6 and a center shaft 7. . This eccentric shaft 1 is used to adjust the positional relationship between the linear motor and the reaction plate, as will be described later.

A bogie frame 10 is placed on this axle box frame 11, movably holding the axle box frame 11 via an axle spring 9, as shown in FIG.

A linear motor 2 composed of an iron core 18, windings 19, etc.
0 is suspended on the axle box frame 11 by having one end connected to the axle box frame 11 with a bolt 12 or the like, and the other end connected to the center of the axle box frame 11 via a movable joint 17. There is. As shown in FIG. 3, the movable joint 17 includes a bracket 13 attached to the center of the axle box frame 11 by welding or the like, a pin 14 inserted through the Brammut 13, and an elastic material such as hard rubber attached to the pin 14. It is constituted by a bracket 16 held through a body 15. The linear motor 20 is attached to this bracket 16.
will be fixed.

According to such a structure, even when the linear motor 20 is mounted on the bogie frame 10, the slight rotation of the wheelset 1 in the horizontal plane or the vertical plane is not restricted. Further, the wheelset 1 can freely move vertically with respect to the truck frame 10 within a range within which the wheelset is allowed to move. Therefore, it is possible to sufficiently follow the passage of a curved track and the deviation of the plane of the rail 22. Further, there is no possibility that excessive stress will be applied to the linear motor 20.

In addition, the propulsive force from the linear motor 20 is transferred to the axle box frame 11.
Since it is received by Further, the mounting height of the linear motor 20, that is, the height above the ground can be set low.

Moreover, the biggest feature is that the axles 3 and 4 of both the left and right axles 2 can be connected or disconnected by the electromagnetic clutch 5 mentioned above, so it is possible to select the best running form according to the radius of curvature of the track. becomes possible.

That is, the truck having the above-described structure rotates within a limited range within its horizontal plane, as shown in FIG. 5, for example, depending on the curvature state of the track. Therefore, a cam surface 40 is formed on the bogie frame 10 to follow the rotation of the bogie frame 10, and when the rotation limit is reached, the limit switch 41 is turned on by the cam surface 30. Detect the limits of the steering range.

Within the self-steering range due to the wheel slope, the electromagnetic clutch 5 connects the wheels 2 on both sides integrally, allowing the vehicle to take the same running form as the conventional system.

In addition, if the self-steering range is exceeded due to traveling on a small radius of curvature trajectory, the limit switch 4
This is detected by the detection signal from 1, and the II magnetic clutch is disengaged, allowing the wheels 2 on both sides to rotate independently and freely.

By separating the wheels 2 on both sides, each wheel 2 rotates at a required circumferential speed, allowing smooth turning. In addition, the wheel 2 caused by the slip mentioned above
Also, problems such as wear of the track 22 and generation of noise from the camera are eliminated.

Also, since the navigation wheel set t-1 is attached to the axle box 8 via the eccentric shaft 7, the installation of the eccentric shaft 7 can be done by adjusting the angle in the circumferential direction, as shown in Fig. 4. The height of the wheel 2 attached to the frame 11 can be adjusted. Specifically, the mounting height can be corrected within a range twice the eccentricity mx.

Therefore, the linear motor 20 is connected to the axle box frame 11.
Since the linear motor 20 and the reaction plate 21 are attached to each other, the gap between the linear motor 20 and the reaction plate 21 can be adjusted by adjusting the ground height of the axle box frame 11 using the spacer shaft 7. Therefore, the mounting position of the linear motor 20 can be adjusted to the position where the performance is most efficient.

In this way, according to this structure, it is possible to improve the tracking ability of the wheels to the track and improve the running performance, and the structure can be simplified, making assembly and disassembly, and furthermore, maintenance and inspection easier. Effects such as this can be achieved.

It goes without saying that the present invention is not limited to the embodiments described above, and can be implemented with various modifications without departing from the spirit thereof.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to detect whether the wheels are inside or outside the self-d steering range based on the rotation angle of the truck,
By controlling the clutch, the wheels on both the left and right sides can be connected integrally, or separated and rotated independently, making it possible to smoothly travel through small curvature radius tracks, which have been difficult until now. make things possible.

Furthermore, since a movable joint is used to attach the linear motor, it is possible to effectively prevent excessive stress from acting on the linear motor. In combination with the action of the shaft spring, the followability of the wheels is improved, and the running stability can be further improved. Further, the structure of the movable joint itself can be simplified, and the overall structure can also be simplified, so that maintenance inspection and repair can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a plan configuration diagram of a linear motor-driven vehicle bogie according to an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a sectional view taken along line A-A in FIG. 1, and FIG. B in Figure 1
-B sectional view, FIG. 5 is a diagram showing the rotation of the bogie frame when running on a curved track, FIG. 6 is a diagram showing an example of the configuration of an electromagnetic clutch, FIG. 7 is a plan configuration diagram of a conventional bogie, and FIG. The figure is a sectional view taken along the line DD in FIG. 7, and FIG. 9 is a sectional view taken along the line EE in FIG. DESCRIPTION OF SYMBOLS 1... Wheel set, 2... Wheel, 3.4... Axle, 5... Electromagnetic clutch, 6... Bearing, 7... Eccentric shaft, 8... Axle box, 9...・・Axis spring, 10・・
- Bogie frame, 11... Axle box frame, 17... Movable joint, 20... Linear motor, 21... Reaction plate, 40... Cam surface, 41... Limit switch. Applicant's Sub-Agent Patent Attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 4 Blade Figure 5 Core a Part 6 ■

Claims (1)

[Claims] A clutch is provided on a part of the axle that connects the wheels on both sides that support the bogie frame, and detects whether the wheels are inside or outside the self-steering range from the rotation angle of the bogie relative to the vehicle, which changes in accordance with the radius of curvature of the track. When the rotation angle of the truck is within the self-steering range, the wheels on both sides are connected and integrated via the clutch, and when the rotation angle of the truck is outside the self-steering range, the wheels on both sides are separated via the clutch. A trolley for a linear motor-driven vehicle, characterized by: