JP4395590B2 - Air spring height adjustment mechanism for railway vehicles - Google Patents

Description

  The present invention relates to a height adjustment mechanism for an air spring for a railway vehicle.

In the railway vehicle, as shown in FIG. 14, a height adjustment valve 4 is installed for each air spring 3 interposed between the vehicle body 1 and the carriage 2. The height adjusting valve 4 is installed on the vehicle body 1, for example. The other end of the lever 5 having one end attached to the operating shaft 4 a is connected to the other end of the connecting rod 6 attached to the carriage 2 so that the other end can swing freely. It is a configuration that pivots to the end.
Japanese Patent Publication No.57-53226

  In such a height adjustment valve 4, when the lever 5 is in the horizontal position, it is determined that the internal pressure of the air spring 3 is balanced, and air supply / exhaust to the air spring 3 is not performed. On the other hand, for example, when the lever 5 is inclined downward to the right in FIG. 14 and the distance between the vehicle body 1 and the carriage 2 in the air spring 3 is narrowed, the air spring 3 is supplied with air to the air spring 3 via the pipe 8 and the internal pressure is reduced. The distance between the vehicle body 1 and the carriage 2 is restored.

  As described above, in the railway vehicle, the height adjustment valve functions to supply air from the air failure to the air spring or discharge the air in the air spring to the outside in accordance with load fluctuations. The vehicle height is adjusted within the range of the stopper clearance h1 + h2 between the ascending stopper 9 and the descending stopper 10 provided between the two carriages 2.

  By the way, in order to enable high-speed traveling, a cant is attached to the curved portion, but due to this relationship, the cant gradually changes in the relaxation curve portion of the curved entrance / exit portion. Therefore, in this relaxation curve portion, the vehicle body is twisted by the front and rear carriages, and the distance between the vehicle body and the carriage is different on the left and right in the traveling direction of the vehicle body.

  In such a relaxation curve portion, the height adjustment valve operates, and air is discharged from the air spring having the larger distance between the vehicle body and the carriage, while the air spring having the smaller distance is discharged. May be supplied with air.

  When air is exhausted, in a vehicle equipped with a conventional height adjustment valve, the wheel speed exerted on the track by the wheel of the air spring portion decreases, so the traveling speed in the relaxation curve portion cannot be increased. It was.

  The problem to be solved by the present invention is that the supply / exhaust of the air spring cannot be controlled without changing the characteristics of the air spring height adjusting device.

The railcar air spring height adjusting mechanism according to the present invention includes:
In order to control the air spring supply and exhaust without changing the characteristics of the air spring height adjustment device,
Height adjustment that adjusts the height of the air spring according to the relative height of the bogie or the bogie of the railway vehicle that supports the bogie by the air spring attached to the bogie or the bogie. The operation of the valve,
A lever attached to the operating shaft of the height adjustment valve, a connecting rod that is rotatably supported by the vehicle body or the carriage and the other is rotatably supported by the lever, or the lever and The member that connects the vehicle body or carriage and the height adjustment valve together with the connecting rod is stored in advance, or is configured to be extensible according to the track information obtained when passing through the ground element,
Alternatively, the relative position of the operating shaft of the height adjustment valve with respect to the carriage or the vehicle body is configured to be changeable according to the track information,
Alternatively, the height adjusting valve (or the connecting rod) is installed on an inclined beam that can be inclined relative to the vehicle body (or the carriage), and the inclined beam is attached to the vehicle body (or the vehicle body) according to the track information. Or configured to be inclined with respect to the bogie)
In addition, even when the height adjustment valve exceeds the normal travel displacement range corresponding to the stopper gap between the vehicle body and the carriage, a range in which the supply flow rate of the air spring can be increased according to the rotation angle of the lever. The most important feature is to have it.

  The present invention attempts to generate a large flow rate by actively rotating the lever of the height adjustment valve when a large flow rate of air supply / exhaust is required in a relaxation curve portion or the like that is a cant gradually decreasing section. is there.

  However, as shown in FIGS. 15 (a) and 15 (b), the currently used height adjustment valve has a different exhaust characteristic as shown in FIGS. 15 (a) and 15 (b). The supply / exhaust flow rate is increased / decreased, but when the normal travel displacement range is exceeded, even if a large flow rate is required, the supply / exhaust flow rate to the air spring cannot be increased / decreased according to the rotation angle of the lever. There is a limit to reducing wheel load fluctuation.

Accordingly, the height adjustment valve used in the present invention is designed so that the air supply / exhaust flow rate to the air spring can be increased or decreased according to the rotation angle of the lever even when the normal travel displacement range is exceeded. a) in the as shown (b), to use those having characteristics. Here, the normal travel displacement range is a range corresponding to the stopper gap between the vehicle body and the carriage, and is a range of h1 + h2 shown in FIG.

  By the way, the general structure of the height adjusting valve 4 is shown in FIGS. 16A and 16B. In FIG. 16A, when the lever 5 (operation shaft 4a) rotates counterclockwise, The lever 4b pushes the needle valve 4c on the left side of the paper in FIG. 16 (a), whereby air is supplied from the air supply port to the air spring. On the other hand, when the lever 5 (operation shaft 4a) rotates clockwise, the lever 4b pushes the needle valve 4d on the right side of the drawing in FIG.

In the conventional height adjustment valve 4 as described above, the rotation angle from the start of rotation of the lever 5 (operation shaft 4a) to the start of air supply / exhaust to the air spring is determined between the lever 4b and the needle valve 4d. Since it is determined by the gap L, the height adjusting valve 4 having characteristics as shown in FIGS. 10 (a) and 10 (b) used in the present invention is shown in FIGS. 11 and 12 (a). As shown in FIG. 11 and FIG. 12B, there are two types of gaps, the gap L1 acting at a displacement larger than the normal travel displacement range and the gap L2 acting at the normal travel displacement range. The height adjusting valve can be obtained by adopting a structure in which the height adjusting valves are arranged in series as shown in FIG. Here, the air supply ports shown in FIGS. 11 and 12 (a) are connected in parallel to form one air supply port, and the air spring ports are also connected in parallel to form one air spring port. This structure shall be adopted.

  In the present invention, since the supply / exhaust of the air spring can be controlled without changing the characteristics of the air spring height adjusting device, the rail vehicle equipped with the air spring height adjusting mechanism according to the present invention is relaxed. There is an advantage that a decrease in wheel load at the curved portion can be suppressed, and the traveling speed at the relaxation curved portion can be improved.

In addition, the height adjustment valve, when rotated beyond the normal running displacement range also, that use those that can increase the supply and exhaust flow rate of air into the air spring in proportion to the rotation angle Therefore , the effect can be further improved.

  And it becomes possible to make driving | running | working on a curve road closer to appropriate driving speed, and to drive | work a curve road more safely. In addition, since the height of the air spring can be adjusted more finely, the step between the platform and the entrance / exit can be further suppressed, and there is an advantage that a barrier-free structure can be realized.

  Hereinafter, a railcar air spring height adjustment mechanism according to the present invention installed in a railcar that supports a vehicle body by an air spring attached to a carriage will be described in detail with reference to FIGS. The railway vehicle is equipped with track information holding means for storing track information that is stored in advance or obtained when passing through the ground unit.

FIG. 1 is a drawing illustrating an air spring height adjusting mechanism according to the first aspect of the present invention.
Reference numeral 4 denotes a height adjustment valve that is attached to the vehicle body 1 of the railway vehicle and adjusts the height of the air spring. The height adjusting valve 4 has a lever 5 having one end fixed to the operating shaft 4a, and the center of the operating shaft 4a according to the relative inclination of, for example, the bogie frame 2a constituting the vehicle body 1 and the cart. Is actuated by rotating as Then, the height adjustment valve 4, adopt one having the characteristics shown in FIG. 10.

  One of the connecting rods 6 is rotatably supported by, for example, the cart frame 2a and the other is pivoted by the lever 5, and the connecting rod 6 controls the relative height between the vehicle body 1 and the cart frame 2a. 5

In the air spring height adjusting mechanism according to the first aspect of the present invention, for example, the connecting rod 6 is configured to be expandable / contractable according to the track information.
Although the structure which can be expanded and contracted is not particularly limited, for example, in the example shown in FIG. A nut 12a constituting the screw 12 and a motor 13 fixedly arranged inside the other 11b are shown. The motor 13 rotates the screw shaft 12b constituting the ball screw 12 through the joint 14 in the forward and reverse directions to extend and contract the entire length of the two cylinders 11a and 11b. In addition, 15 in FIG. 1 shows a return spring.

  As described above, when the connecting rod 6 is configured to be extendable / contractable, the connecting rod 6 is extended / contracted according to the track information. For example, in the relaxation curve portion, the distance between the vehicle body 1 and the carriage frame 2a is increased. By controlling the length of the connecting rod 6 so as to reduce the amount of air discharged from the other air spring, the reduction in wheel load of the air spring portion is suppressed, and the relaxation curve portion The traveling speed can be improved.

  And, in the air spring height adjusting mechanism according to the first aspect of the present invention, which is configured so that the connecting rod 6 can be expanded and contracted, there is no need to change the mounting seat on the carriage frame side, and only the connecting rod 6 needs to be replaced. It can be easily applied to existing carts. In addition, since the connecting rod 6 is attached to the carriage frame 2a via the bracket to the lever 5 of the height adjustment valve 4 attached to the vehicle body 1, it does not directly receive the unsprung vibration of the carriage frame 2a. This is advantageous in terms of vibration resistance.

Although FIG. 1 demonstrated what comprised the length of the connecting rod 6 so that expansion-contraction was possible, you may comprise the lever 5 so that expansion-contraction is performed, and there exists an effect | action similar to the above.
Further, FIG. 2 replaces the length of the connecting rod 6 so that the length can be expanded and contracted, and between the lever 5 and the connecting rod 6, for example, an actuator 26 and a link having the same configuration as the connecting rod 6 in FIG. In the example shown in FIG. 2, a bell crank) 16 is interposed.

  Thus, even when the actuator 26 is interposed between the lever 5 and the connecting rod 6, the connecting rod 6 is configured to be extendable and contractable as shown in FIG. 1 and the lever 5 is configured to be extendable. In addition to the operation, the actuator 26 is further attached to the connecting rod 6 via the link 16 at a higher position than the support point on the vehicle body 1 side of the link 16, so that the unsprung vibration can be further reduced. In addition, the reliability of the vibration resistance performance of the actuator 26 is improved.

  Further, since the actuator 26 and the connecting rod 6 can be separated, manual height adjustment by the connecting rod 6 (in this case, the actuator 26 is held at a predetermined length) and a dynamic length change by the actuator 26 are separated. The initial adjustment at the time of maintenance can be easily performed. In addition, as shown in FIG. 2, when connected via the link 16, the amount of expansion / contraction of the lever 5 or the connecting rod 6 or the actuator 26 necessary for achieving the same action can be reduced.

Next, an air spring height adjusting mechanism according to the second aspect of the present invention will be described.
The air spring height adjusting mechanism according to the second aspect of the present invention has the same function as that of the air spring height adjusting mechanism according to the first aspect of the present invention shown in FIG. The relative position of the operating shaft 4a of the height adjustment valve 4 with respect to the vehicle body 1 or the carriage frame 2a is changed according to the track information, and the vehicle body 1 is apparently inclined. Is to control.

  FIG. 3 is a drawing illustrating an air spring height adjusting mechanism according to the second aspect of the present invention. In the example shown in FIG. 3, in order to configure the relative position of the operating shaft 4 a of the height adjustment valve 4 with respect to the vehicle body 1, for example, the height adjustment valve 4 is not directly installed on the vehicle body 1, An example in which an actuator 17 is interposed between the height adjusting valve 4 and the vehicle body 1 is shown.

  That is, while the cylinder 17a of the actuator 17 is attached to the vehicle body 1 so as to be freely rotatable, the tip of the rod 17b is attached to the height adjusting valve 4 so as to be freely rotatable. The height adjusting valve 4 is rotated forward and backward to change the relative position of the operating shaft 4 a of the height adjusting valve 4 with respect to the vehicle body 1.

  In the configuration shown in FIG. 3, since existing products can be used for the connecting rod 6 and the lever 5, existing technologies can be used as they are for initial adjustment and component maintenance. In addition, since the actuator 17 only allows the height adjustment valve 4 to rotate, the actuator 17 can be completely sprung and can reduce the influence of unsprung vibration, and the vibration resistance performance of the actuator 17 can be reduced. Reliability is improved. Furthermore, the mounting bracket 6 on the side of the carriage frame 2a can be mounted on the existing carriage as it is because the existing bracket can be used, and the modification cost in the case of application to an existing vehicle can be suppressed.

  The means for changing the relative position of the operating shaft 4a of the height adjusting valve 4 with respect to the vehicle body 1 (or the carriage frame 2a) is not limited to the means for rotating the height adjusting valve 4 as shown in FIG. It may be anything.

  For example, FIG. 4 shows a structure in which a height adjustment valve 4 is attached to the vehicle body 1 so that the vehicle can move in the vertical direction with respect to the vehicle body or the carriage. In the example shown in FIG. 4, the guide member 19, one of which is connected to the return spring 18, is pulled up in the vertical direction against the spring force of the return spring 18 by the actuator 16 connected to the other. The height adjustment valve 4 attached integrally with the member 19 is configured to move in the vertical direction.

  In the configuration shown in FIG. 4, since the actuator 20 is completely mounted on the vehicle body 1 side, there is almost no influence of unsprung vibration, and the reliability of the actuator 20 with respect to unsprung vibration is improved. In addition, since the mounting bracket of the connecting rod 6 on the side of the carriage frame 2a can use the existing bracket, it can be attached to the existing carriage as it is as shown in FIG. The cost of remodeling can be reduced.

  FIG. 5 shows a structure in which a height adjustment valve 4 is attached to the vehicle body 1 so as to be movable in the horizontal direction with respect to the vehicle body or the carriage. In the example shown in FIG. 5, the height adjusting valve 4 is attached to the vehicle body 1 via a guide member 19 so that the vehicle body 1 can move in the horizontal direction, and the operating shaft of the height adjusting valve 4 is connected via the lever 5. In this configuration, the height adjusting valve 4 is moved in the horizontal direction of the vehicle body 1 by inclining the connecting rod 6 that rotates 4a.

  In the configuration shown in FIG. 5, since the moving direction is horizontal, it is not necessary to support the weight of the height adjusting valve 4 in the power of the actuator or the neutral position holding at the time of failure, and a smaller actuator can be used.

  6 shows the relative position of the operating shaft 4a of the height adjusting valve 4 with respect to the vehicle body 1 by connecting the lever 5 and the operating shaft 4a of the height adjusting valve 4 via the rotary actuator 21 instead of connecting them directly. It is the structure which changes. The rotary actuator 21 incorporates a return spring.

  In the configuration shown in FIG. 6, the rotary actuator 21 is completely mounted on the vehicle body 1, and the influence of unsprung vibration is almost eliminated, and the reliability of the rotary actuator 21 with respect to unsprung vibration is improved. In addition, since the mounting bracket 6 on the side of the carriage frame 2a can use the existing bracket, it can be attached to the existing carriage as it is as shown in FIGS. Remodeling costs in the case of application can be suppressed.

  It goes without saying that the air spring height adjusting mechanism according to the second aspect of the present invention is not limited to the above example, and the height adjusting valve 4 may be installed on the carriage frame 2a. Moreover, what combined said example suitably may be used. When these are combined, the amount of change in the relative position for each structure is reduced.

Next, an air spring height adjusting mechanism according to the third aspect of the present invention will be described.
The air spring height adjusting mechanism according to the third aspect of the present invention is configured such that the lever 5 or the connecting rod 6 can be expanded and contracted, and the relative position of the operating shaft 4a of the height adjusting valve 4 with respect to the vehicle body 1 or the carriage frame 2a. The air spring height adjusting mechanism according to the first or second aspect of the present invention can be operated without changing the above.

7 and 8 are drawings illustrating an air spring height adjusting mechanism according to the third aspect of the present invention. This out in the example shown in Figure 7, have established the height adjusting valve 4 to the inclined beam 2 2 mounted on the underside of the vehicle body 1 so as to be relatively inclined with respect to the vehicle body 1. Meanwhile, in the example shown in FIG. 8, an example of a case where the inclined beam 2 2 it is difficult to attach to the vehicle body 1 as shown in FIG. 7, the upper portion of the relatively tiltable bogie frame 2a with respect to the bogie frame 2a The connecting rod 6 is installed on the inclined beam 23 attached to the head.

  In the example shown in FIG. 7, the inclined beam 22 is tilted with respect to the vehicle body 1 by the retracting and retracting of the rod of the actuator 24. In the example shown in FIG. By inclining the inclined beam 23 with respect to the carriage frame 2a by retreating, the vehicle body 1 is controlled to be inclined in appearance.

  In the configurations shown in FIGS. 7 and 8, the same action as that of the air spring height adjusting mechanism having the configuration shown in FIG. 3 can be performed by one expensive actuator.

  7 and 8, the fulcrum 22a or 23a of the inclined beam 22 or 23 is positioned at the center of the vehicle body 1 or the carriage frame 2a. However, these fulcrum 22a, 23a does not necessarily have to be positioned at the center of the vehicle body 1 or the bogie frame 2a, and a fulcrum may be disposed at an easy design point.

  In the air spring height adjusting mechanism according to the present invention described above, the track information is reduced so that, for example, in the relaxation curve portion, the amount of air discharged from the air spring having the larger interval between the vehicle body 1 and the carriage frame 2a is reduced. Accordingly, the lever 5 or the connecting rod 6 can be expanded and contracted, the relative position of the operating shaft 4a of the height adjusting valve 4 with respect to the vehicle body 1 or the carriage frame 2a can be changed, and the inclined beams 22 and 23 can be inclined to increase the height. Control is made so that the lever 5 of the regulating valve 4 is rotated.

  And in the railway vehicle equipped with such an air spring height adjustment mechanism according to the present invention, for example, in the relaxation curve portion, by performing the above-described control, it is possible to suppress the wheel load decrease of the air spring portion, It becomes possible to improve the traveling speed at the relaxation curve portion.

  For example, as shown in FIG. 9, the lever 5 of the height adjustment valve 4 is rotated by detecting the rotation angle of the lever 5 of the height adjustment valve 4 with a sensor and feedback-controlling the detected rotation angle. Then, the air spring is more reliably controlled by controlling the rotation angle of the lever 5 of the height adjustment valve 4 to be an optimum angle from the operating condition (track condition) and the feedback rotation angle of the lever 5. This is desirable because it can suppress a reduction in wheel load of the wheel of the part.

  Although the embodiments of the present invention have been described above, the present invention is not limited to these exemplifications, and it is needless to say that changes can be made within the scope of the technical idea shown in the claims.

  The present invention described above can be applied not only when traveling along a relaxation curve, but also when traveling as long as air is supplied to and discharged from an air spring.

It is a figure explaining the example of the air spring height adjustment mechanism which concerns on 1st this invention, (a) is a whole sectional view shown partially, (b) is principal part explanatory drawing of an expansion-contraction mechanism. It is a figure explaining the other example of the air spring height adjustment mechanism which concerns on 1st this invention. It is a figure explaining the example of the air spring height adjustment mechanism which concerns on 2nd this invention. It is a figure explaining the other example of the air spring height adjustment mechanism which concerns on 2nd this invention. It is a figure explaining the further another example of the air spring height adjustment mechanism which concerns on 2nd this invention. It is a figure explaining the further another example of the air spring height adjustment mechanism which concerns on 2nd this invention. It is a figure explaining the example of the air spring height adjustment mechanism which concerns on 3rd this invention. It is a figure explaining the other example of the air spring height adjustment mechanism which concerns on 3rd this invention. It is a flowchart which shows the control method using the air spring height adjustment mechanism which concerns on this invention. (A) (b) is a figure explaining the characteristic of the height adjustment valve used for the air spring height adjustment mechanism which concerns on this invention. It is a figure explaining the structure of the height adjustment valve used for the air spring height adjustment mechanism which concerns on this invention, (a) is AA sectional drawing of Fig.13 (a), (b) is AA sectional part. It is a figure which shows the characteristic. It is a figure explaining the structure of the height adjustment valve used for the air spring height adjustment mechanism which concerns on this invention, (a) is BB sectional drawing of Fig.13 (a), (b) is BB sectional part. It is a figure which shows the characteristic. It is a figure explaining the structure of the height adjustment valve used for the air spring height adjustment mechanism which concerns on this invention, (a) is sectional drawing seen from the side surface, (b) is a figure which shows the characteristic. It is a figure explaining the conventional height adjustment mechanism. (A) (b) is the figure which showed the relationship between the lever rotation angle and the supply / exhaust flow rate of an air spring of the height adjustment valve currently employ | adopted. It is sectional drawing explaining the structure of the conventional height adjustment valve, (a) is the figure seen from the front, (b) is the figure seen from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2a Bogie frame 3 Air spring 4 Height adjustment valve 4a Actuating shaft 5 Lever 6 Connecting rod 13 Motor 16 Link 17 Actuator 20 Actuator 21 Rotary actuator 22 Inclined beam 23 Inclined beam 24 Actuator 25 Actuator 26 Actuator

Claims (10)

A railway vehicle that supports a vehicle body by an air spring attached to a carriage,
This railway vehicle is stored in advance or track information holding means for holding track information obtained when passing through the ground unit,
A height adjustment valve which is attached to the carriage or the vehicle body and adjusts the height of the air spring according to the relative height of the vehicle body with respect to the carriage;
A lever attached to the operating shaft for operating the height adjustment valve;
Including a connecting rod that is rotatably supported by the vehicle body or the carriage, and the other is rotatably supported by the lever;
The lever or the connecting rod, or a member that connects the vehicle body or the carriage and the height adjustment valve together with the lever and the connecting rod is configured to be extendable and retractable according to the track information,
Even if the height adjustment valve exceeds the normal travel displacement range corresponding to the stopper clearance between the vehicle body and the carriage , the supply flow rate of the air spring can be increased according to the rotation angle of the lever An air spring height adjusting mechanism for a railway vehicle, characterized in that   The rail spring air spring height adjusting mechanism according to claim 1, wherein a link is interposed between the lever and the connecting rod. A railway vehicle that supports a vehicle body by an air spring attached to a carriage,
This railway vehicle is stored in advance or track information holding means for holding track information obtained when passing through the ground unit,
A height adjustment valve which is attached to the carriage or the vehicle body and adjusts the height of the air spring according to the relative height of the vehicle body with respect to the carriage;
A lever attached to the operating shaft for operating the height adjustment valve;
Including a connecting rod that is rotatably supported by the vehicle body or the carriage, and the other is rotatably supported by the lever;
The relative position of the operating shaft of the height adjustment valve with respect to the vehicle body or the carriage is configured to be changeable according to the track information,
Even if the height adjustment valve exceeds the normal travel displacement range corresponding to the stopper clearance between the vehicle body and the carriage , the supply flow rate of the air spring can be increased according to the rotation angle of the lever An air spring height adjusting mechanism for a railway vehicle, characterized in that   The rail spring air spring height adjustment mechanism according to claim 3, wherein the change of the relative position is performed by rotation of the height adjustment valve. The change in the relative position, the vehicle body or claim 3 Symbol mounting of the air spring height adjustment mechanism for a railway vehicle and performing the vertical movement relative to the carriage of the height adjustment valve. The change in the relative position, the vehicle body or claim 3 Symbol mounting rail vehicle air spring height adjustment mechanism and performing the horizontal movement relative to the carriage of the height adjustment valve.   The rail spring air spring height adjusting mechanism according to claim 6, wherein the relative position is changed by an inclined arrangement of the connecting rods. The change in the relative position, according to claim 3 Symbol mounting rail vehicle air spring height adjustment mechanism and performing the rotation of the actuating shaft of the height adjustment valve. A railway vehicle that supports a vehicle body by an air spring attached to a carriage,
This railway vehicle is stored in advance or track information holding means for holding track information obtained when passing through the ground unit,
A height adjustment valve for adjusting the height of the air spring;
A lever attached to the operating shaft for operating the height adjustment valve;
A connecting rod that is rotatably supported on one side of the carriage and rotatably supported on the lever;
Including an inclined beam attached to the lower portion of the vehicle body so as to be inclined relative to the vehicle body;
The height adjusting valve is installed on the inclined beam, and the inclined beam is inclined with respect to the vehicle body according to the track information.
Even if the height adjustment valve exceeds the normal travel displacement range corresponding to the stopper clearance between the vehicle body and the carriage , the supply flow rate of the air spring can be increased according to the rotation angle of the lever An air spring height adjusting mechanism for a railway vehicle, characterized in that A railway vehicle that supports a vehicle body by an air spring attached to a carriage,
This railway vehicle is stored in advance or track information holding means for holding track information obtained when passing through the ground unit,
A height adjustment valve attached to the vehicle body for adjusting the height of the air spring;
A lever attached to the operating shaft for operating the height adjustment valve;
A connecting rod that is rotatably supported on one side of the carriage and rotatably supported on the lever;
An inclined beam attached to the upper part of the carriage so as to be inclined relative to the carriage, and
The connecting rod is installed on the inclined beam and configured to incline the inclined beam with respect to the carriage according to the track information.
Even if the height adjustment valve exceeds the normal travel displacement range corresponding to the stopper clearance between the vehicle body and the carriage , the supply flow rate of the air spring can be increased according to the rotation angle of the lever An air spring height adjusting mechanism for a railway vehicle, characterized in that

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