JP3499401B2 - Rail-change lock release device for rail-gauge variable bogies for railway vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable gauge carriage for a railway vehicle capable of changing wheel intervals in order to continuously run on rails having different gauge dimensions such as a bullet train and a conventional line. More specifically, the present invention relates to a gauge change lock releasing device that surely releases a lock that fixes wheels so that the gauge cannot be changed so that the gauge can be smoothly changed.

In Japanese railways, for example, a standard gauge having a gauge of 1435 mm used for a bullet train and a narrow gauge having a gauge of 1067 mm used for a conventional line are used in combination. If a railway vehicle that can run continuously on rails with different gauges is developed, its merits such as convenience for passengers, shortened arrival time, and reduced railway construction cost will be extremely large. Therefore, the applicant of the present application has developed and applied for various railcar variable bogies for railway vehicles. (See Japanese Patent Application Laid-Open No. 8-332950, etc.)

An outline of the structure of such a variable gauge carriage for a railroad vehicle will be described with reference to FIG. 6, in which an axle outer cylinder 3 is attached to an axle 2 supported so as to be relatively displaceable downward with respect to an axle box 1.
Is fitted so as to be slidable in the axial direction. Wheels 4 are rotatably supported on the axle outer cylinder 3 via bearings 5. A pair of engaging protrusions 7 and 8 are provided on the upper surface of the locking block 6 fixed to the end of the axle outer cylinder 3 so as to be aligned in the axial direction of the axle 2. On the other hand, the axle box 1 is formed with an engagement hole 9 and an escape hole 10 which can be engaged with the engagement protrusions 7 and 8, respectively.

As a result, as shown by the solid line in FIG. 6, in the state where the engagement protrusion 7 on the left side in the figure and the engagement hole 9 on the right side in the figure are engaged, the locking block 6, that is, the wheel 4 is provided.
Is locked so that the gauge cannot be changed in the narrow gauge compatible state. On the other hand, as shown by an imaginary line in FIG. 6, when the engagement projection 8 is engaged with the engagement hole 9, the wheel 4 is locked in a state compatible with the standard gauge so that the gauge cannot be changed.

When the gauge is changed from the narrow gauge compatible state to the standard gauge compatible state in the gauge variable carriage constructed as described above, first, the body box supporting rail 11 abutting the lower surface of the axle box 1 is used to move the axle box 1 That is, it supports the vehicle body. Then
When the wheels 4 roll forward on the traveling rails 12 having a downward slope in the traveling direction, the wheels 4 are gradually displaced relative to the vehicle body support rails 11 downward. Along with this, the axle 2 is also displaced downward with respect to the axle box 1, and the engagement between the engagement protrusion 7 and the engagement hole 9 is released. Therefore,
In this state, the axle outer cylinder 3 is slid to the end portion side (left side in the drawing) of the axle 2 to change the gauge to a standard gauge compatible state. After that, when the wheel 4 rolls and moves forward on the traveling rail 12 having an upward slope in the forward direction, the axle 2 gradually rises with respect to the axle box 1 and engages with the engagement protrusion 8. The holes 9 are engaged with each other. As a result, the wheels 4 are locked in a state compatible with the standard gauge so that the gauge cannot be changed.

[0006]

In the variable gauge carriage according to the above-mentioned prior application, the engagement projections 7 and 8 and the engagement holes 9 are fixed to each other for some reason, and the fixing force includes the wheels 4. If the weight of the axle 2 (about 2 tons) is exceeded, the engagement between the engagement projections 7 and 8 and the engagement hole 9 cannot be released, and there is a possibility that the gauge cannot be changed.

Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to reliably release the lock for fixing the wheels to the gauge-incapable of changing the gauge, and to enable smooth gauge-change. An object of the present invention is to provide a gauge change lock release device for a railcar variable carriage.

[0008]

[Means for Solving the Problems] A book for solving the above problems
The invention is a gauge change lock for a variable gauge carriage for railway vehicles.
Is a gear release device, wherein the railroad variable gauge carriage is
It is supported on the axle box so that it can be displaced downward relative to the axle box.
Axle and position corresponding to standard gauge and narrow gauge
In each position, the gauge cannot be changed with respect to the axle box.
Lockable vehicle slidably fitted on the axle
Outer shaft cylinder and rotatably supported on the outer shaft cylinder via bearings
And the engaged wheel, which is displaced vertically with the axle
Means, and when changing the gauge, the axle is placed in the axle box.
By displacing it downward, the front of the axle box
It is possible to unlock the outer cylinder of the axle .
In the section where the gauge is changed on the ground side, the vehicle body is
Side-by-side running rails that extend horizontally for support
Progress of the body support rails and the variable-gauge trolley for the railway vehicle
Running with a part that slopes forward and downward toward the front
Row rails and lock solutions installed side by side on the body support rails
And a lock release rail are installed.
When the gauge is changed, the axle changes downward with respect to the axle box.
When it is not moved, it contacts the engaging means and presses the axle.
To move forward in order to displace downward downward
Characterized by having an engaging surface that slopes forward and downward
I am trying.

That is, the variable gauge for railcars of the present invention
The gauge change lock release device of the car
Lock that locks the wheel so that it cannot be changed when displaced toward
The lock mechanism that releases the
Depending on the weight of the axle including wheels due to sticking,
When you can not unlock the lock, unlock the lock installed on the ground side
A member that displaces in the vertical direction integrally with the axle on the engaging surface of the rail.
The coupling means engages, forcibly displacing the axle downwards
It is designed to forcibly cancel the lock. According to
Thus, according to the present invention, the wheels for fixing the wheels so that the gauge cannot be changed.
The lock can be securely released and the gauge can be changed smoothly.
it can.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a gauge change lock release device for a railcar variable carriage according to the present invention will be described.
This will be described in detail with reference to FIGS. 1 to 5. Here, FIG.
FIG. 2 is a front view of a main part broken view showing an embodiment of a gauge changing lock releasing device for a railcar variable gauge according to the present invention before unlocking; FIG. 2 shows the gauge changing lock releasing device shown in FIG. FIG. 5 is a side view, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. 4 is a side view schematically showing the relationship between the vehicle body support rail and the traveling rail and the unlocking rail. [Fig. 2] is a fragmentary front view showing the gauge change lock releasing device shown in Fig. 1 in an unlocked state.

First, with reference to FIG. 1, the structure of a variable track gauge truck for a railway vehicle to which the gauge change lock releasing device 100 of the present embodiment is applied will be outlined. As shown in FIG. 1, the axle 2 supported by the axle box 1 can be relatively displaced downward with respect to the axle box 1. Further, a cylindrical axle outer cylinder 3 is fitted on the axle 2 so as to be slidable in the axial direction. Wheels 4 are rotatably supported on the axle outer cylinder 3 via bearings (not shown). A pair of engaging protrusions 7 and 8 are provided on the upper surface of the locking block 6 fixed to the end of the axle outer cylinder 3 so as to be aligned in the axial direction of the axle 2. On the other hand, the shaft box 1 is provided with an engaging hole 9 and an escape hole 10 which can engage with the engaging protrusions 7 and 8, respectively.

As a result, when the pair of engaging projections 7 and 8 are engaged with the engaging holes 9 as shown in FIG. 1, the wheel 4 is locked in a state compatible with the standard gauge so that the gauge cannot be changed. On the other hand, when the axle outer cylinder 3 is slid to the right in the drawing and engages with the engagement protrusion 7 on the left side in the drawing and engages with the engagement hole 9 on the right side in the drawing, the wheel 4 is locked in a narrow gauge compatible state and the gauge cannot be changed. To be done.

As shown in FIGS. 1 to 3, the axle 2
A shaft end beam 20 is attached to the shaft end of the shaft. The shaft end beam 20 has a pair of guide pins 21 that engage with the shaft box 1,
21 is provided so as to transmit the external force in the axial direction acting on the axle 2 to the axle box 1. In addition, the shaft end beam 2
A support beam 23, which rotatably supports the engagement roller 22 arranged coaxially with the axle 2, is removably screwed to the shaft 0 by a plurality of bolts 24. On the mounting surfaces 25 and 26 where the support beam 23 and the shaft end beam 20 are in close contact with each other, not shown horizontal serrations are engraved, respectively, so that the support beam 23 and the shaft end beam 20 do not shift in the vertical direction. Are engaged. Further, the bolt insertion hole 27 through which the bolt 24 is inserted is a long hole extending in the vertical direction, and the mounting position of the support beam 23, that is, the engagement roller 22 with respect to the axle 2 can be adjusted in the vertical direction. The engagement roller 22 is provided so as to be within the limit of the first reduction vehicle drawn by the thick chain line in FIG.

On the other hand, as shown in FIG. 1, on the ground G side,
A lock release rail 30 that engages with the engagement roller 22 and forcibly displaces the axle 2 downward is installed when the track is changed. The unlocking rail 30 is installed so as to extend parallel to the axle box 1, that is, the vehicle body supporting rail 11 that supports the vehicle body of the railway vehicle when the gauge is changed. The unlocking rail 30 has a fixed portion 31 fixed to the ground G side, a vertical portion 32 extending from the fixed portion 31 and extending vertically upward, and a vertical portion 32 continuously extending from the upper end of the vertical portion 32. And an engaging portion 33 extending to the. The engaging portion 33 is provided with an engaging surface 34 that extends so as to face the ground G side. The engagement surface 34
As shown in FIG. 4, has a portion that is lowered frontward in the direction in which the variable gauge carriage travels when the gauge is changed. Further, when the gauge is changed, the engagement roller 22 rolls while engaging with the engagement surface 34.

Next, the operation of the gauge change lock releasing device 100 of the present embodiment configured as described above will be described with reference to FIG.
It will be described with reference to FIG. The details of the procedure for changing the gauge of the variable gauge carriage are described in the previous patent application (Japanese Patent Laid-Open No. 8-332950, etc.) filed by the applicant of the present application, and therefore the outline thereof will be described here. .

The gauge change of the gauge variable carriage is automatically performed by the gauge variable carriage passing through a gauge change section in which the vehicle body support rail 11, the traveling rail 12 and the lock release rail 30 are arranged in parallel. As shown in FIG. 4, the vehicle body support rail 11 extends horizontally in the entire gauge change section. On the other hand, the traveling rail 12 has a horizontal portion 12a extending horizontally with respect to the vehicle body supporting rail 11 at an interval of H1 in the vertical direction, an inclined portion 12b extending forward and downward toward the front in the traveling direction, and a vehicle body. It has a horizontal portion 12c that extends horizontally with respect to the support rail 11 with a space of H2 (> H1) in the vertical direction. Also,
The unlocking rail 30 has an inclined portion 30a extending forward and downward toward the front in the traveling direction, and a horizontal portion 30b extending horizontally with respect to the vehicle body support rail 11 at an interval of H3 (> H2) in the vertical direction. ing.

As shown by (1) in FIG. 4, in the first portion of the gauge change section, the vehicle body support roller 13 provided at the lower end of the axle box 1 is placed on the vehicle body support rail 11 and the axle box 1 That is, the vehicle body of the railway vehicle is supported by the vehicle body support rail 11. Then, in this state, the variable gauge carriage further advances in the gauge change section, and its wheels 4 are moved to the traveling rail 1
When approaching the inclined portion 12b of the wheel 2, the wheel 4
Is gradually displaced relative to the shaft box 1 downward. As a result, the engaging protrusions 7 and 8 provided on the locking block 6
Is disengaged from the engagement hole 9 penetrating the axle box 1, and the lock for fixing the wheel 4 incapable of changing the track is released as shown in FIG.

However, the engagement projections 7 and 8 and the engagement hole 9 are fixed to each other or the shaft end beam 20 is caused for some reason.
1 and 4 shows an abnormal state in which the guide pin 21 provided on the vehicle and the axle box 1 are fixed, and the fixing force exceeds the weight of the axle 2 including the wheels 4 (about 2 tons). As described above, the wheels 4 are lifted from the traveling rail 12 while the engagement protrusions 7 and 8 are still engaged with the engagement holes 9.
At this time, when the variable gauge carriage further advances with the wheels 4 lifted from the traveling rails 12, (2) in FIG.
As shown by, the engagement roller 22 attached to the shaft end beam 20 of the axle 2 contacts the engagement surface 34 of the lock release rail 30. Since the engagement surface 34 is inclined forward and downward toward the front in the traveling direction of the gauge variable carriage, the engagement roller 22 is forcibly displaced downward as the gauge variable carriage advances.

As a result, in addition to the weight of the axle 2 including the wheels 4, the lock release rail 30 moves the engaging roller 22 downward at the portion where the engaging projections 7 and 8 and the engaging hole 9 are fixed. Since the forced displacement force for forced displacement acts, the fixation between the engagement projections 7 and 8 and the engagement hole 9 or the fixation between the guide pin 21 provided on the shaft end beam 20 and the shaft box 1 is forcibly released. To be Therefore, the engagement projections 7 and 8 are disengaged from the engagement holes 9, and the lock for fixing the wheel 4 incapable of changing the track is released as shown in FIG. As shown by (3) in FIG. 5 and FIG. 4, after the engagement between the engagement projections 7 and 8 and the engagement hole 9 is released, the wheel 4 is placed on the horizontal portion 12 c of the traveling rail 12. The engaging roller 22 does not come into contact with the unlocking rail 30 when rolling.

That is, in the gauge change lock releasing device 100 of the present embodiment, the engagement projections 7 and 8 for locking the wheels 4 so that the gauge cannot be changed and the engagement holes 9 are fixed, or the shaft end beam 2 is provided.
0 and the guide pin 21 and the axle box 1 are fixed to each other, and the wheel 4
When the engagement between the engagement projections 7 and 8 and the engagement hole 9 cannot be released due to the weight of the axle 2 including the wheel, the lock release rail 30 and the engagement roller 22 engage with each other to force the axle 2 to move. It is configured to be displaced downward. Accordingly, even if the engagement projections 7 and 8 and the engagement hole 9 are fixed to each other for some reason, the lock that fixes the wheel 4 incapable of changing the gauge can be reliably released, so that the gauge of the variable gauge carriage can be changed. Can be done smoothly.

Further, the gauge change lock releasing device 100 of the present embodiment only has the engagement roller 22 attached to the gauge variable carriage side, and the structure thereof is extremely simple. This makes it possible to minimize the increase in unsprung weight of the variable gauge carriage, and it is easy to perform maintenance and inspection.
Further, it can be compactly accommodated within the first reduction vehicle limit of the variable gauge truck.

Further, in the lock gauge changing lock releasing device 100 of the present embodiment, the mounting position of the engagement roller 22 with respect to the axle 2 can be adjusted in the vertical direction. As a result, even if the diameter of the wheel 4 decreases due to the removal of the tread surface of the wheel 4, the vertical position of the engagement roller 22 with respect to the lock release rail 30 can be optimally maintained, so that the lock release function operates reliably. Can be made.

Although one embodiment of the gauge change lock releasing device for a railcar variable gauge for a railcar according to the present invention has been described in detail above, the present invention is not limited to the above-mentioned embodiment, and various changes may be made. It goes without saying that it is possible. For example, although the engaging roller 22 is attached to the shaft end beam 20 in the above-described embodiment, the engaging roller 22 may be attached at any position as long as the engaging roller 22 can be vertically displaced integrally with the axle 2. Further, instead of the engagement roller 22, the engagement surface 34 of the lock release rail 30
It is also possible to use a sled-shaped engaging member that slides on the top.
Further, in the above-described embodiment, the lock release rail 3
0 is installed individually, but for example, body support rail 11
It can also be provided integrally with. Further, a plurality of engagement rollers may be provided on the lock release rail side, and a warp-shaped engagement member that engages with these engagement rollers may be provided on the axle side.

[0024]

As is apparent from the above description, in the gauge changing lock releasing device for a railcar variable bogie for a railway vehicle according to the present invention, when the axle is displaced downward with respect to the axle box, the wheels are fixed so that the gauge cannot be changed. If the lock mechanism of the type that releases the lock cannot be released depending on the weight of the axle including the wheels due to sticking for some reason, the lock release rail installed on the ground side will be integrated with the axle. The engaging means that is displaced in the vertical direction is engaged, and the axle is forcibly displaced downward so that the lock is forcibly released. Therefore, according to the present invention, there is provided a gauge changing lock releasing device for a variable gauge truck for a railway vehicle, which reliably releases a lock for fixing the wheels so that the gauge cannot be changed, so that the gauge can be smoothly changed. be able to. Further, the gauge change lock releasing device for a railcar variable gauge for a railroad vehicle of the present invention has only to be provided with engaging means on the axle side, so that the structure is extremely simple and maintenance and inspection are easy,
Moreover, the unsprung weight does not increase, and the unsprung weight is extremely compact and can be easily provided inside the first reduction vehicle limit. Further, in the gauge changing lock releasing device for the railcar variable gauge for railcars of the present invention, since the engaging means can be vertically adjusted in position with respect to the axle, the diameter of the wheel is reduced by the removal of the tread surface of the wheel. However, the vertical position of the engagement means roller with respect to the unlocking rail can be maintained optimally, and the unlocking function can be reliably operated.

[Brief description of drawings]

FIG. 1 is a fragmentary front elevational view showing an embodiment of a gauge changing lock releasing device for a railcar variable gauge according to the present invention in a state before unlocking.

FIG. 2 is a side view showing the gauge change lock releasing device shown in FIG.

FIG. 3 is a cross-sectional view taken along the line AA shown in FIG.

FIG. 4 is a side view schematically showing a relationship between a vehicle body support rail, a traveling rail, and a lock release rail.

5 is a fragmentary front elevational view showing the gauge change lock releasing device shown in FIG. 1 in an unlocked state. FIG.

FIG. 6 is a fragmentary front view showing a variable track gauge for railway vehicle according to a prior application.

[Explanation of symbols]

1 Axle Box 2 Axle 3 Axle Outer Cylinder 4 Wheel 5 Bearing 6 Locking Block 7, 8 Engagement Projection 9 Engagement Hole 10 Escape Hole 11 Car Body Support Rail 12 Travel Rail 13 Car Body Support Roller 20 Shaft End Beam 21 Guide Pin 22 Engagement Roller 23 Support beam 24 Bolts 25, 26 Adhesion surface 27 Long hole 30 Lock release rail 31 Fixed portion 32 Vertical portion 33 Engagement portion 34 Engagement surface 100 Drive device for variable track gauge railroad vehicle according to the present invention

Front page continuation (72) Inventor Yukio Minowa 3-9-6 Osawa, Mitaka City, Tokyo Inside Subaru Research Co., Ltd. (72) Inventor Akihide Watanabe 1-7-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Fuji Heavy Industries Ltd. (56) Reference JP-A-8-216881 (JP, A) JP-A-8-332950 (JP, A) JP-A-7-156800 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B61F 7/00 B60B 35/10

Claims (5)

(57) [Claims] 1. A gauge change for a rail car variable gauge carriage
An unlocking device, wherein the railroad variable gauge carriage is supported by the axle box so as to be relatively displaceable downward with respect to the axle box.
Axle and the position corresponding to standard gauge and the position corresponding to narrow gauge
Each can be locked to the axle box without changing the gauge
An axle outer cylinder slidably fitted on the axle, and a wheel rotatably supported on the axle outer cylinder via a bearing.
And an engaging means that is vertically displaced together with the axle.
When changing the gauge, displace the axle downward with respect to the axle box.
By doing so, the axle outer cylinder is locked against the axle box.
The track can be released, and in the track change section on the ground side , the running rail for supporting the vehicle body via the axle box is used.
A vehicle body support rail that is installed in parallel and extends horizontally, and is directed forward in the traveling direction of the variable gauge carriage for railway vehicles.
A traveling rail having a portion inclined downward to the front, a lock release rail provided in parallel with the vehicle body support rail,
Is installed, and the unlocking rail is used for changing the track.
Engages when is not displaced downward with respect to the axle box
Contacting the means to forcefully displace the axle downwards
For leaning forward and downward toward the front in the direction of travel
A gauge change lock releasing device for a variable gauge truck for a railway vehicle , which has a facing surface . 2. The axle by a guide pin engaging an axle box.
Axial end of the axle that transmits an external force in the axial direction that acts on
A shaft end beam attached to the shaft end beam, wherein the engagement means is attached to the shaft end beam.
Trajectories of gauge variable bogie for a railway vehicle mounting serial to claim 1, symptoms
Interchange lock release device. 3. The engagement means contacts the engagement surface.
3. The gauge change lock releasing device for a variable gauge truck for a railway vehicle according to claim 1 or 2, which is an engaging roller that rotates at any time . 4. The engaging means is upward and downward with respect to the axle.
The position can be adjusted in any direction.
Gauge of the railcar variable bogie for railcars described in any one of 3 to 3.
Change lock release device. 5. A railcar variable track bogie according to claim 2 , wherein serrations for engaging in the vertical direction are formed on a mounting surface for mounting the engaging means to the shaft end beam. Gauge change lock release device.