JPS6357269B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a track bogie, and more particularly, to a linear induction motor (LIM).
This invention relates to a steerable track bogie that is propelled by a.

It is known that linear induction motors (LIMs) need to be held with a precise and constant gap on a reaction rail for efficient operation and propulsion. For conventional track bogies, even those without axle steering devices, the bogie frame members are suspended elastically from the axle, which prevents undesired vertical movement of the bogie frame members relative to the rails. , and thus this truck frame member cannot provide adequate support to the LIM. That is, with this truck frame, the LIM will have unacceptable vertical movement relative to the reaction rail, and the air gap will fluctuate beyond acceptable limits.

Furthermore, in track bogies whose axles are designed to be steered radially around curves, the above-mentioned precisely controlled It becomes increasingly difficult to get a gap.

A general object of the present invention is to provide a steered track truck having a linear induction motor (LIM) system which is held with precision gears on a reaction rail.

Another object of the present invention is to provide a track bogie and LIM propulsion assembly that is relatively simple in structure and reliable in operation.

Another object of the invention is to provide a track that uses link connections and includes swivel connections to provide the necessary degrees of freedom for pivoting and torsional movement between the LIM and the supporting truck frame members. trolley and
Our objective is to provide an assembly with the LIM propulsion machine.

These and other objects and advantages of the present invention will become apparent from the following detailed description of embodiments taken with reference to the drawings.

A track bogie 1 according to the present invention shown in FIG. 1 is used as a pair to support a car body 2 of any structure. This track bogie 1 is connected to a car body 2 by a bolster 3 and related members for supporting the car body 2.

The bolster 3 has a middle part 4 of cylindrical structure with a uniform rectangular cross section. Each end of the bolster 3 has a base plate portion 5 located lower than the intermediate portion 4 of the bolster. A reinforcing rim 6 is attached to the bottom of each base plate section 5 and extends in the longitudinal direction of the bolster. Each base plate portion 5 is provided with a pair of side plates 7 extending along both sides thereof with edges facing upward. A generally C-shaped top plate 8 is fixed to the upper edge of each pair of adjacent side plates 7 and cooperates with the side plates and the corresponding base plate part 5 to form a protective recess for the air spring device 9. ing. The air spring device is of any suitable and well known construction currently in use. Each bolster 3
Two air spring devices 9 are fixed to the vehicle body 2, for example by bolts 10, and support the loads at the ends of the vehicle body. Two side plates 7 of the bolster 3 on the inside of the bogie are connected to the vehicle body 2 by a pair of bolster drag links or rods 11.
More specifically, each bolster drag link or rod 11 is pivotally connected at one end to a corresponding side plate 7 of the bolster, and at the other end to a bracket 12 fixed to and projecting downwardly from the bottom of the vehicle body. It is pivoted to. The ends of each rod 11 are adapted to pivot vertically to accommodate the bouncing movement between the body and the bolster. Both ends of the rod 11 are also provided with elastic bushings,
It has a limited free movement and is adapted to accommodate very small lateral displacements of the vehicle body relative to the bolster.

The track bogie has yokes 13 and 14 on the outside and inside of the track car body. Outside yoke 1
3 has a main frame 15, and the inner yoke 14 has a main frame 16. Each main frame 15 and 16 has a pair of laterally spaced projections 17, each of which has a journal housing 18 attached thereto. Main frame 1
5 and 16 are formed with a horizontal beam portion 19 located below them. The journal housing 18 of each yoke 13 and 14 rotatably supports an axle 20 having a flanged wheel 21 at each of its outer ends. The flanged wheels 21 are thus adapted to carry the yoke and remainder of the track truck assembly on the rails 22.

The outer yoke 13 is rigidly attached to the main frame 15 at its center and has a vertical bar 23 projecting inwardly therefrom. Similarly, the main frame 16 has a longitudinal bar 24 rigidly attached to it centrally and projecting outwardly therefrom. These two longitudinal bars 23 and 24 have their free ends equidistant from each axle 20,
Therefore, they are pivotally connected to each other below the center of the bolster 3.

The longitudinal bars 23 and 24 are pivotally suspended from the bolster at 25 by pivot connections which also pivot a steering crossbar 26 which is vertically suspended at 25. Pivot around an axis of direction. The ends of a pair of rod or yoke traction links 27 are pivotally connected to corresponding ends of the steering crossbar 26, and the opposite ends of the traction links 27 are connected to depending brackets 28 fixed to the vehicle body 2. It is pivotally supported.

A pair of side frames 29 and 30 are respectively disposed on both sides of the track bogie and extend vertically parallel to each other. Each side frame is pivoted at its inward end to a corresponding journal housing 18 by a resilient pad. Each side frame rests at its outboard end on a sliding pad atop a corresponding journal housing 18. Each end of the bolster 3 rests on a sliding pad in the center of the corresponding side frame.
Therefore, the load of the vehicle body 2 is directly transmitted via the air spring 9 and both ends of the bolster 3 onto the sliding pad in the center of the side frames 29 and 30. Therefore, the sliding pads are connected to the journal bearing or journal housing 18 or the yoke 13,
14. Allowing relative longitudinal displacement between the bolster 3 and the side frame. Such a displacement occurs when the vehicle body 2 and the bolster 3 together with it undergo an angular displacement with respect to the side frame and the entire track bogie in a curve. As will be explained later, this angular displacement of the vehicle body steers the yokes 13, 14 to radially align the axle 20 to the curve. Such steering displacement of the yoke causes a relative sliding movement between the yoke and the side frames 29, 30 on the corresponding sliding pads.

A link 31, which is a lateral positioning rod, extends in the lateral direction of the truck and is pivotally connected to the central portion of the bolster 3 and to the side frame 29. this link 3
1 accurately regulates the lateral position of the side frame 29 with respect to the bolster 3. A set of three yoke concentric links 32, 32, 33 extend laterally, one end of which is pivotally connected to one end of the side frame,
The other end is pivoted near the centerline of the corresponding yoke. These links 32 and 33 connect the yoke 1
The yokes 13 and 14 are provided to laterally regulate the position of the side frames 29 and 30 relative to the side frames 29 and 14, and also provide a rotation axis for steering operation of the yokes 13 and 14 relative to the side frames 29 and 30. .

The steering crossbar 26 is connected by an adjustable link 35 to an arm 34 rigidly fixed to the intermediate part 4 of the bolster 3 and extending longitudinally across the track body, said link being connected to the arm 34 and the adjacent traction link. 27 and extends substantially parallel to the steering crossbar 26.

When the track vehicle passes through a curve, the car body 2 and bolster 3 rotate slightly relative to the longitudinal axis of the yoke and the track vehicle. As a result, arm 3
4 and adjustable link 35 act on traction link 27 and crossbar 26 to hold the crossbar fixed relative to the vehicle centerline. The crossbar acts on the yoke 13 at 25 to steer its axle 20 into a position substantially radial to the curve of the rail 22. The aforementioned pivot connection between the two yokes 13 and 14 also steers the yoke 14 into a position radial to the curve of the trajectory. The steering axle is located perpendicular to the center of each axle.

This effect will be explained with reference to FIGS. 7 and 8. Note that some of the LIM devices and connecting links are omitted in these drawings, and the appearance is slightly different from that in FIG. 3. When the railway vehicle approaches a bend, the car body 2 encloses an angle a with respect to the longitudinal axis of the bogie 1. Since the bolster 3 is restrained with respect to the vehicle body 2, the bolster 3
also includes the same angle a with respect to the truck 1.

The adjustable link 35 serves to keep the steering crossbar 26 laterally centered with respect to the vehicle body 2. The yokes 13, 14 are thereby sufficiently displaced relative to the center line of the truck 1 to rotate in opposite directions (b, c), so that both axles 20 are rotated by d, e from the transverse axis of the truck. , radially aligned with respect to curvature.

FIGS. 7 and 8 are exaggerated representations of the relative angles of rotation between members that rotate with respect to each other. In reality, the vertical bars 23, 24 are only slightly displaced in the lateral direction; therefore, the vertical bars 23, 24
The vertical pivot axis between the bogie 1 with respect to the car body 2
There is only a very small displacement t in the lateral direction from the alignment position with the center of rotation.

To allow for such steering action and to provide for longitudinal irregularities in the rail 22, the yoke 13
and 14 and side frames 29 and 30 are connected by links 32, 33 via universal joints to allow limited movement relative to each other. The yokes 13 and 14 bounce against the axle 20 with resistance due to resilient bushings (not shown) around bearings in each journal housing 18. Thus, yokes 13 and 14 remain at virtually the same constant height relative to rail 22 at axle 20.

The track bogie and LIM propulsion assembly of the present invention comprises the track bogie 1 and bolster 3 described above in combination with a linear induction motor (LIM) device 36 and associated linkage described below. The track bogie 1 and the bolster 3 are manufactured by the applicant's patent No. 1161308 (Japanese Patent Publication No. 57-54344) (corresponding U.S. Patent No. 4221172).
This is explained and illustrated in detail in the following issue.

Linear induction motor (LIM) device 3
6 is shown only schematically in FIGS. 3, 5 and 6, but may be of any suitable construction known in the art, and includes a reaction rail 37 spaced apart from rail 22; It is possible to obtain a propulsion effect against. The LIM device 36 is relatively flat and elongated and is located below the yoke and bolster described above.

A system of three vertical links supports the LIM device against the yoke and side frames. The linkage includes a single suspension link 38 that pivotally suspends the outboard end of the LIM device 36 from the outboard yoke 13.
A single suspension link 38 is centrally disposed across the LIM device 36 and yoke 13, with holes 38a and 38b at each end extending through pins 50 and 38b, respectively, as seen in FIGS. 3-6. 52 to each of the yoke 13 and the LIM device 36. The linkage device also includes a pair of suspension links 39 that pivotally suspend the inboard end of the LIM device 36 from the inboard yoke 14 .
Each suspension link 38, 39, 39 is pivotally supported to enable displacement of the yokes 13, 14 relative to the LIM device along the longitudinal axis of the track vehicle. A suspension link 38 is coupled to the yoke 13 adjacent to the steering axis of the yoke 13, and a suspension link 39 is disposed equidistant from the axis of the yoke 14. Pin 50, 52, 5
No. 4,56 provides for the ends of the suspension links to be rotatably coupled with the yoke and the LIM device with limited self-movement and to prevent some rollover of the suspension links relative to the LIM device and/or the yoke. It's starting to allow movement. The three-point support provided by the suspension links 38, 39 allows the yokes 13, 14 to move up and down relative to each other without creating torsional loads on the LIM device 36 if the track car deviates from a flat position. Make it seem possible. The LIM device 36 also follows the movement of the yoke 14 by coupling with laterally spaced suspension links 39 and pins 50, 52, thereby causing the LIM device 36 to be longitudinally oriented relative to the yoke 13. It is possible to twist around it. When the yokes 13, 14 are in the steering position, the suspension link 38 allows the yoke 13 to pivot and the hole 39 of the suspension link 39
Pins 54, 56 provided in a, 39b permit equal and opposite displacement of the suspension link 39 in the longitudinal direction so that the LIM device 36 is maintained in a central position with respect to the yoke 13.

The lateral and vertical position of the LIM device is determined by the linkage in one generally horizontal plane. That is, the drag link 40 extends longitudinally in the longitudinal direction of the LIM device or the track truck, and one end thereof is pivotally connected to the tail portion 41 of the inwardly disposed yoke 14.
The other end is pivotally connected to a bracket 42 that projects fixedly from the LIM device. The end of the drag link 40 closer to the outside of the vehicle body is connected to the vertical shaft 6 of the yoke 14.
0, and the inward end is attached to the horizontal axis 62
It is pivoted in the direction of. The vertical axis 60 is the yoke 1
When the yoke 14 assumes the steering position, the distance between the line of action of the drag link 40 is minimized, and the steering accident that occurs on the yoke 14 due to the propulsion force is minimized. Force is likewise kept to a minimum. It can also be seen from FIG. 4 that the drag link 40 is at a slightly higher vertical position than the tow link 27, which causes the center of force of the LIM device to change with acceleration.
A force couple will be provided by the propulsion force to maintain equal loads on each of the zeros. The connection of these ends of the drag link 40 also allows for rolling movement by suitable rod end connections.

As a horizontal link device, a pair of lateral links 43 and 44 are included to restrict the LIM device laterally with respect to the yokes 13 and 14 and hold it in a central position.

As seen in FIG.
3 and 44 are connected to the yokes 13 and 14 by the pin 64.
It is coupled to a LIM device 36 to allow the link to pivot about a vertical axis. The transverse links 43, 44 are arranged at either end of the longitudinal axis of the truck such that the connection to the yokes 13, 14 is remote from the connection to the LIM device 36. The transverse links 43, 44 are also oriented such that their extensions pass through the position of the respective steering axes of the yokes 13, 14 when the two axles 20 are parallel, and the transverse links 43, 44 are
The steering couple generated in the yoke by the forces of 3 and 44 is minimized. The placement of the transverse links at both ends of the longitudinal axis ensures that no steering movement of the yokes 13, 14 occurs due to forces that would cause the LIM device 36 to yaw relative to the track. This is because the steering couples created by such a yaw are equal in magnitude and opposite in direction, so they balance and cancel each other out.

On the other hand, the opening of the lateral links from the lateral axis of the truck has an advantageous effect when the LIM device is subjected to lateral forces. In this case, the forces in the transverse links 43, 44 provide opposite steering couples to the yokes, thereby causing the yokes 13,
14 takes the steering position. This steers within the bogie rails, minimizing the effects of lateral disturbances on the car body and improving the dynamic stability of the bogie.

As above, links 38, 39, 40, 43
and 44 connect the above LIM device to the yokes 13 and 14.
The yoke is restrained in the vertical, longitudinal and lateral directions, but is also pivotally and rollingly connected to allow steering of the yoke at a relatively small angle with respect to the side frame. It's getting old. Transverse links 43 and 44 are connected to the yoke, and the centerline of each link is aligned as closely as possible to the center of yaw rotation of the yoke so as to match the trajectory when the yoke is steered. The alignment error is minimized.
Thus, the LIM device 36 is also held in alignment with the reaction rail 37 and at a precise gap height C on this rail.

Various changes may be made in the details of the construction of the invention without departing from the scope and principles of the invention as defined in the claims.

[Brief explanation of the drawing]

Figure 1 shows a pair of track bogies according to the present invention.
Side view of the rail car with assembly with LIM propulsion machine,
Figure 2 shows the track bogies surrounded by arrow line 2 in Figure 1.
A side view of the assembly with the LIM propulsion machine, Figure 3 is the second
A plan view taken along line 3-3 in the figure, with some parts removed to clearly show the LIM device, Figure 4 is a sectional view taken along line 4-4 in Figure 3, and Figure 5 is a linear view. A perspective view showing an induction motor (LIM) device along with some of the related regulation links connected thereto, FIG. 6 is a partial end view of the assembly of the track bogie and LIM propulsion machine, and FIG. FIG. 8 is a schematic plan view showing the rotational relationship between the truck and the vehicle body, and FIG. 8 is an enlarged detailed view of the left truck in FIG. 1... Track bogie, 2... Track car, 3... Bolster, 11... Rod, 13, 14... Yoke, 1
5, 16... Main frame, 20... Axle, 2
1...Wheel, 26...Crossbar, 29,30...
...Side frame, 36...LIM device, 38,
39...Drag link, 40...Drag link,
43, 44...Horizontal link.

Claims (1)

[Scope of Claims] 1. A main frame for connecting to the vehicle body, and a pair of axle devices supporting the frame, each of which has a longitudinal direction of the bogie relative to the frame so as to perform steering operation around a substantially vertical steering axis. the axle device coupled in a spaced manner along a directional axis;
a steerable motor having a linear induction motor extending between said axle set and cooperating with a reaction rail to propel the bogie; and a suspension system extending between said motor and said axle set for vertically positioning said motor. a truck, the suspension being a first linkage connecting the motor to one axle, the relative relationship between the motor and the suspension about the longitudinal axis of the truck; a first linkage that prohibits relative pivoting but allows relative pivoting between the motor and the axle about the steering axis of the one axle; a second linkage device connected to the motor and allowing relative pivoting therebetween about the longitudinal axis and the steering axis of the other axle device, and a torsional load is applied to the motor. A steerable bogie that is a suspension device that prohibits such a thing while allowing flexibility for steering motion and torsion between the axle devices. 2. The first linkage includes a pair of laterally spaced links, each extending from the axle set to the motor and pivotally connected to the axle set and the motor at respective ends. and allowing relative displacement between the axle assembly and the motor along the longitudinal axis of the truck;
A steerable truck according to claim 1. 3. The steerable truck of claim 2, wherein a line connecting the laterally spaced links intersects the steering axis. 4. A steerable truck according to claim 3, wherein the links are arranged on both sides at equal distances from the longitudinal axis. 5. The steerable truck according to claim 2, wherein the second link device is disposed adjacent to the steering shaft of the other axle device. 6. The second linkage is pivotally coupled at respective ends to the motor and the axle to accommodate longitudinal displacement of the motor relative to the axle. A steerable trolley as described in paragraph. 7. The steerable truck of claim 5, wherein the first and second linkage devices are freely coupled to the motor and respective axle devices. 8. The steerable truck according to claim 1, comprising a propulsive force transmission means for transmitting propulsive force from the motor to one of the axle devices. 9. The steerable truck of claim 8, wherein the propulsion transmission means includes a link coupled to the one axle device adjacent to the steering shaft. 10 The axle device is equipped with a traction link that transmits a traction load from the bogie to the vehicle body, and the link is coupled to the axle device at a position above the connection point between the traction link and the vehicle body, and the link is connected to the axle device at a position above the connection point between the traction link and the vehicle body, and 10. A steerable truck as claimed in claim 9, which provides a force couple on the truck about a transverse horizontal axis when a propulsion force is applied. 11. The steerable truck according to claim 2, wherein a centering device is provided between the motor and the axle device to inhibit lateral movement of the motor relative to the axle device. 12. The centering device includes a pair of lateral links, each lateral link extending to a respective one of the motor and the axle device.
A steerable trolley as described in paragraph. 13. The steerable truck of claim 12, wherein the lateral links lie on a line passing through each steering axle of the axle assembly. 14. A steerable truck according to claim 13, wherein the transverse link is inclined towards the longitudinal axis of the truck and is mounted on the axle arrangement in a longitudinally laterally displaced position. . 15. The steerable truck of claim 14, wherein the transverse links are located at opposite ends of the longitudinal axis. 16 the distance along the longitudinal axis between the connections of said lateral links to each of said axle units is greater than the distance between said steering axles, and the lateral forces on said motor are equal and oppositely directed on each of said axle units; Claim 1 inducing a steering action
The steerable trolley according to item 4. 17 A steerable bogie comprising: a pair of wheel sets spaced apart along the longitudinal axis of the bogie; a pair of yokes respectively associated with each of the wheel sets; and a pair of yokes supported by the yokes. a main frame coupled to the yoke to allow rotation relative to the yoke about a vertical steering axis; and a linear induction disposed below the yoke and cooperating with a reaction rail. a motor; a suspension system for suspending the motor from a yoke to maintain the motor fixedly perpendicular to the truck; a propulsion system for transmitting a longitudinal force from the motor to the yoke; a centering device for prohibiting lateral displacement of a motor relative to said yoke, said suspension device including three links, each link being coupled at a respective end to said motor and to each of said set of wheels; two of the links are connected at a spaced apart position between one of the wheel sets and the motor, and the other link is connected between the other wheel set and the motor. a steerable truck coupled between the wheels, such that the links are vertically supported while permitting steering and torsional displacement between the pair of wheels; 18. The centering device includes a pair of lateral links, each of the lateral links being pivotally connected to a respective one of the motor and the yoke to accommodate steering movement of the yoke with respect to the motor. The steerable trolley described. 19 the transverse links are arranged at opposite ends of the longitudinal axis of the bogie and are coupled to the yoke at a position displaced along the longitudinal axis from the steering shaft, and thus are connected to the motor; 19. The steerable truck of claim 18, wherein applied lateral forces are transmitted to said yokes to induce equal and opposite steering movements in each of said yokes about their respective axes. 20 said transverse links are disposed at opposite ends of said longitudinal axis and are each coupled to said yoke on the outside of their respective steering axes to direct the steering movement of said yoke upon displacement of said motor relative to said truck; 20. A steerable trolley according to claim 19, which prevents interference. 21 The propulsion device is a longitudinal link coupled between the motor and one of the yokes, the propulsion device being pivotally connected to the one yoke adjacent to a steering axis of the yoke, and controlling the steering movement of the yoke. 21. A steerable truck as claimed in claim 20, including links corresponding to and minimizing steering couples created by the propulsion of the motor during movement of the yoke to the steering position.