JP2002234437A - Vehicle body tilting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body tilting device capable of easily and surely controlling inclination of a vehicle body at a low cost. SOLUTION: Control for allowing rotational displacement of the vehicle body is carried out separately from control for tilting the vehicle body by absorbing the rotational displacement of a bogie to the vehicle body by means of a first air spring and controlling the inclination of the vehicle body by means of a second air spring.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for tilting a vehicle body in a railway vehicle, and more particularly, to a device for tilting a vehicle body using an air spring.

[0002]

2. Description of the Related Art Hitherto, there has been known a vehicle body inclining device for inclining a vehicle body of a railway vehicle using an air spring. Such a vehicle body tilting device supports a vehicle body via a pair of air springs provided on left and right bogie frames, for example, as in the invention described in JP-A-11-34868. Also,
It has a volume moving cylinder for moving a fixed volume of air between the left and right air springs, and tilts the vehicle body by operating the volume moving cylinder to change the height of the left and right air springs. In addition, the air spring has a function of elastically supporting the vehicle body and absorbing a lateral shift (bias) of the bogie rotation bias. Therefore, such a vehicle body tilting device is configured so that the vertical stroke of the air spring is increased so as to have both the function of tilting the vehicle body and the function of absorbing the lateral displacement.

[0003]

However, based on such an idea, the air spring must allow a large three-dimensional displacement, and a lateral displacement occurs between the vehicle body and the bogie, so that the air spring moves in the horizontal direction. In this case, three-dimensional control is performed only by the control amount in the height direction. Therefore,
The control of the height of the air spring is extremely complicated, and there is a problem that a great deal of cost is required for performing accurate control. Further, since the height is controlled by one air spring, feedback control of the height is performed, and there is a problem that the stability of the control is lacking. Further, when the air spring is punctured, there is another problem that control cannot be performed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle body tilting device capable of easily, accurately, and at low cost controlling the vehicle body tilt.

[0005]

According to the first aspect of the present invention,
A vehicle body tilting device for a railway vehicle that supports the vehicle body S via a pair of air spring portions 2 provided on the left and right bogie frames D (for example, a biasing air spring 22, a tilting air spring 24a, 24).
b, 24c, the automatic control device 7, etc.), the air spring portion elastically supports the vehicle body by adjusting the amount of internal air, and absorbs a bogie rotation displacement with respect to the vehicle body on a curved road. An air spring (eg, a biasing air spring 22) and a second air spring (eg, a tilting air spring 2) that changes the height of the vehicle body by adjusting the amount of air inside.
4a, 24b, 24c, etc.).

According to the first aspect of the present invention, the rotational displacement of the bogie relative to the vehicle body is absorbed by the first air spring, and the height of the vehicle body is changed by the second air spring. The allowed control and the control for tilting the vehicle body are performed separately, so that there is no need to perform complicated three-dimensional control, and the vehicle body tilt control can be performed easily and accurately.

According to a second aspect of the present invention, in the vehicle leaning apparatus according to the first aspect, the second air spring is formed by laminating a plurality of stages, and the inflow and outflow of air are controlled independently for each stage. It is characterized by being done.

According to the second aspect of the invention, it is needless to say that the same effect as that of the first aspect of the invention can be obtained. In particular, the second air spring is formed by being laminated in a plurality of stages. Since the height of each second air spring of the step is controlled independently and independently, the inclination of the vehicle body can be controlled in various variations only by designating the combination of the second air springs to be adjusted in height. Thus, the height of the air spring can be easily controlled.

According to a third aspect of the present invention, in the vehicle body inclining device according to the second aspect, the height of each step of the second air spring is controlled in two steps.

According to the third aspect of the invention, it is needless to say that the same effect as that of the second aspect of the invention can be obtained. In particular, the height adjustment of the second air spring can be performed in two steps. Therefore, the control becomes simple and the cost for the control can be reduced.

According to a fourth aspect of the present invention, in the vehicle body inclining device according to the second or third aspect, the height of the second air spring is raised at a predetermined position based on supplying air to each of the second air springs. (For example, a positioning boss 242).

According to the fourth aspect of the invention, it is needless to say that the same effect as that of the second or third aspect of the invention can be obtained. The height of the air spring is kept constant, so that the height control by air supply is performed accurately.

According to a fifth aspect of the present invention, in the vehicle body inclining device according to any one of the first to fourth aspects, the vehicle body is pin-coupled to the air spring portion (for example, a pin joint portion 8 or the like). It is characterized by:

According to the fifth aspect of the invention, the first to fifth aspects are provided.
It is a matter of course that the same effect as the invention described in any one of 4 is obtained. In particular, since the vehicle body is pin-connected to the vehicle body tilting device, the vehicle body is connected to the upper surface of the vehicle body tilting device and the pin of the pin joint. It becomes possible to rotate as an axis, and the vehicle body can be tilted even when the vehicle body tilting device is kept horizontal, the upper surface of the vehicle body tilting device no longer tilts with the lower surface of the vehicle body. Height is kept constant.

According to a sixth aspect of the present invention, there is provided the vehicle body inclining device according to any one of the first to fifth aspects, wherein an internal pressure detecting means (for example, a pressure detector 91) for detecting an internal pressure of the first air spring is provided. Pressure adjusting means for adjusting the pressure of the second air spring to a value equal to the internal pressure or a value obtained by multiplying the internal pressure by a predetermined ratio based on the internal pressure detected by the internal pressure detecting means (for example, pressure adjustment Valve 9).

According to the sixth aspect of the present invention, the first to fifth aspects are provided.
It is needless to say that the same effect as the invention described in any one of 5 is obtained. In particular, since the internal pressure of the second air spring is adjusted and controlled based on the internal pressure of the first air spring, the first The spring constants of the second air spring and the air spring are also set to appropriate values, and in all the air springs, the spring constant is adjusted in accordance with the weight of the vehicle body, the vibration of the vehicle body is reduced, and the riding comfort of passengers is improved.

According to a seventh aspect of the present invention, in the vehicle body inclining device according to any one of the first to sixth aspects, the air spring portion includes a side beam provided on the bogie frame D and having an inverted C-shaped side surface. It is attached to the concave portion D1, and the first air spring is integrally connected to the upper surface of the second air spring.

According to the invention of claim 7, claims 1 to 1 are provided.
It is a matter of course that the same effect as that of the invention described in any one of 6 is obtained. In particular, since the first air spring is provided integrally with the second air spring, the vehicle body rotates. When the first air spring is displaced and laterally displaced, interference of the concave portion of the bogie frame can be eliminated. Therefore, in the recess of the bogie frame,
There is no need to provide play for displacement of the first air spring, and the distance of the horizontal portion of the concave portion provided in the center of the bogie frame can be shortened. As a result, the axle mounted on the bogie frame The distance between them can be shortened.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a railway vehicle provided with a vehicle body support device according to the present invention, FIG. 2 is a diagram showing a control system of the vehicle body support device, and FIG. 3 is a sectional view of a main part of the vehicle body support device.

The vehicle body support device 1 shown in FIGS. 1 to 3 includes an air spring portion 2 and a laminated rubber 3 provided below the air spring portion 2. The bottom surface D of the concave portion in which the side surface provided at the center of the beam is inclined in an inverted C shape.
It is attached to 1. An auxiliary air chamber 4 is provided in the bogie frame D below the bottom surface D1 of the concave portion. Further, the vehicle body support device 1 includes a height adjustment device 5, an electromagnetic valve 6, an automatic control device 7, and the like.

The air spring portion 2 includes a lower plate 21 provided on the upper surface of the laminated rubber 3, a biasing air spring (first air spring) 22 mounted on the lower surface plate 21, and a biasing air spring 22. A lower partition plate 23 provided on the air spring 22 and a downwardly inclined air spring (second air spring) 24 a integrally mounted on the lower partition plate 23 are provided.
Further, the air spring portion 2 includes a middle partition plate 25, a middle tilt air spring (second air spring) 24b, a top partition plate 26, and a top tilt air on the lower tilt air spring 24a. A spring (second air spring) 24c is provided in a stacked manner, and an upper surface plate 27 is provided on the upwardly inclined air spring 24c.

A supply / exhaust pipe 28a communicating with the biasing air spring 22 and a supply / exhaust pipe 28b communicating with the downwardly inclined air spring 24a are inserted into the lower partition plate 23. Further, a supply / exhaust pipe 28c communicating with the middle inclination air spring 24c is inserted into the intermediate plate 25, and a supply / exhaust tube 28d communicating with the upper inclination air spring 24c is inserted into the upper division plate 25.
The vehicle body support control and the vehicle body inclination control are performed by supplying air to or exhausting the air from the air springs 22, 24a to 24c through the supply / exhaust pipes 28a to 28d.

The laminated rubber 3 has a donut shape in which a rubber 31 and a metal plate 32 are laminated, and has a hollow portion 33 inside. The laminated rubber 3 has a boss 34 having an internal space inserted into the concave bottom surface D1 and sealed with an O-ring 34a. Therefore, the cavity 33 communicates with the auxiliary air chamber 4, and the cavity 33 also communicates with the biasing air spring 22 via the communication hole 21 a provided in the lower plate 21.

As shown in FIG. 3, the biasing air spring 22 is a diaphragm-type air spring, has a sufficient deflection, elastically supports the vehicle body S, and has a lower plate when the vehicle passes a curved road. It has a function of absorbing a deviation between the vehicle body S and the bogie frame D in response to a horizontal displacement of the plate 23 separating from the lower part 21. In addition, the biasing air spring 22 supports the vehicle body S while maintaining a constant internal pressure by the height adjusting device 5.
This internal pressure is set to an appropriate value according to the vehicle weight.

The height adjusting device 5 is provided on a supply / exhaust pipe 28a inserted into the biasing air spring 22, and the height adjusting device 5 is adapted to change the biasing air spring 22 when the height of the biasing air spring 22 changes. The height of the biasing air spring 22 is kept constant by adjusting the amount of air in and out of the spring 22.

The tilting air springs 24a to 24c are air springs provided with air chambers 241a to 241c and positioning bosses 242, and are constructed so as not to be laterally displaced (biased). The lower partition plate 23, the middle partition plate 25, and the upper partition plate 26 have air communication chambers 23a, 25a, 26
a is provided. Each air communication chamber 23a, 25a, 2
Air communication holes 231 and 2 communicating with air chambers 241a to 241c of the inclination air springs 24a to 24c are provided on the upper surface of 6a.
Lids 232, 252, and 262 provided with 51 and 261 are provided. The respective air communication chambers 23a, 25a, 26a are connected to the respective air chambers 241 through the ventilation holes 231, 251, 261.
a to 241c.

The lids 232, 252, 262 have
Positioning bosses 242 for positioning the heights of the tilting air springs 24a to 24c are respectively inserted. The positioning boss 242 is a columnar body having a flange 242a at a lower portion, and an upper end portion of the positioning boss 242 is fixed to a separation plate 25, 26 or an upper plate 27 located at an upper portion. That is, the upper end of the positioning boss 242 whose lower end is located in the air communication chamber 23a of the lower plate 23 is fixed to the lower end of the intermediate plate 25, and the lower end is located in the air communication chamber 25a of the intermediate plate 25. The upper end of the positioning boss 242 is fixed to the lower end of the upper plate 26, and the air communication chamber 2 of the upper plate 26 is fixed.
The upper end of the positioning boss 242 whose lower end is located at 6 a is fixed to the lower end of the top plate 27.

The radius of the insertion hole for inserting the positioning boss provided in the lids 232, 252, 262 is as follows.
When the air is sucked into the air chamber 241 and the partition plates 25 and 26 are raised, the flange 242a of the positioning boss 242 is closed by the lid 232 of the air communication chambers 23a, 25a and 26a. , 252, 26
In order to prevent the air springs 24a to 24c from being raised further, the inclination air springs 24a to 24c can be maintained at a predetermined height.

A pin joint 8 is fixedly provided on the upper surface of the upper plate 27. The air spring 2 and the vehicle body S are connected via the pin joint 8. A pin 81 whose axis is oriented in the same direction as the front-rear direction of the vehicle body S is inserted into the pin joint portion 8, and the vehicle body S is rotatable clockwise and counterclockwise along the outer peripheral surface of the pin 81. As shown in FIG. 4, even when the vehicle enters a curved road and the vehicle body S tilts, the upper surface of the air spring portion 2 can maintain a horizontal position.

Note that the vehicle body tilting device includes a tilting air spring 2.
4a to 24c, supply and exhaust pipes 28b to 28d, an electromagnetic valve 6, an automatic control device 7, and the like.

Next, air supply / exhaust control of the vehicle body support device 1 will be described. Here, the control system of the biasing air spring 22 is performed by the internal pressure adjusting mechanism by the height adjusting device 5 described above. Since a well-known technique for the control system of the biasing air spring 22 is used, the description is omitted. As shown in FIG. 2, the tilting air springs 24 a to 24 c are performed by a solenoid valve 6, an automatic control device 7, and a pressure adjusting valve 9. In FIG. 2, only the control system of the vehicle body support device 1 on the left side of the drawing is shown, but the control system on the right side is the same as that of the left side. Here, only the control system of the vehicle body support device 1 on the left will be described.

The vehicle body tilting air springs 24a to 24c provided in the vehicle body support device 1 are connected to the pressure regulating valve 9 via solenoid valves 6, 6, 6, respectively. It is connected to the air reservoir P.

The pressure regulating valve 9 includes tilting air springs 24a to 24a.
This is for associating the internal pressure 24c with the internal pressure of the biasing air spring 22. The pressure adjusting valve 9 is provided with a pressure detector 91 for detecting the internal pressure of the supply / exhaust pipe 28 a of the biasing air spring 22.
It is connected to the. The pressure regulating valve 9 always receives the internal pressure data of the biasing air spring 22 output from the pressure detector 91, and based on the internal pressure data, the inclination air springs 24a to 24a-2.
The internal pressure 4c is maintained at a pressure equal to or a predetermined ratio to the internal pressure of the biasing air spring 22. This is for setting the spring constants of the tilting air springs 24a to 24c to appropriate values according to the vehicle weight.
4c, the biasing air spring 2 is set to an appropriate value in advance.
2 to the value associated with the internal pressure of 2
The spring constants of 4a to 24c are also set to appropriate values.

The solenoid valve 6 includes tilting air springs 24a to 24
A direction control valve for controlling the flow direction of the supply / exhaust pipes 28b to 28d connected to the valve c. The valve is switched by a signal transmitted from the automatic control device 7. That is, by switching the solenoid valve 6, air is introduced into or discharged from the inclination air springs 24a to 24c, and the inclination air springs 24a to 24c are discharged.
Adjust the height of c in two steps.

The automatic control device 7 calculates the vehicle body inclination angle from the data for calculating the vehicle body inclination angle, for example, the deviation angle of the bogie D and the traveling speed of the vehicle, and according to the calculated vehicle body inclination angle, the solenoid valve is operated. A switching operation is instructed to 6, 6, 6.
The solenoid valve 6 is divided into a conduit connecting the air springs for inclination 24a to 24c and the pressure regulating valve 4, and a conduit connecting the air springs for inclination 24a to 24c to the atmosphere. The orifice or the throttle is provided, and the air discharge speed of the inclination air springs 24a to 24c is appropriately controlled by the pipe resistance.

The tilting air spring 2 having the above configuration
The vehicle body tilting operations 4a to 24c will be described. FIG.
FIG. 3 is a diagram illustrating a state in which the vehicle body support device 1 is traveling on a straight road. As shown in FIG. 2, when traveling on a straight road, the solenoid valves 6, 6, 6 are in communication with the original air reservoir P, and the air springs 24a to 24c are filled with air. The air springs 24a to 24c are maintained at a predetermined height by a positioning boss 241.

Here, when the vehicle enters the curved road, the automatic control device 7 determines the deviation angle of the bogie D and the traveling speed of the vehicle.
An appropriate inclination air spring 24a to 24c is selected, and the electromagnetic valve 6 is instructed to switch the pipeline.

When the solenoid valve 6 is actuated and the conduit of the solenoid valve 6 is switched, the tilting air springs 24a to 24c
Is discharged into the atmosphere through supply / exhaust pipes 28b to 28d, the tilting air springs 24a to 24c are contracted, and the lower surface of the flange of the positioning boss 242 is opposed to the air communication chamber 23.
a, 25a, 26a. Which or how many of the leaning air springs 24a to 24c are contracted is determined by the required leaning angle. When the required air spring contracts, the vehicle body S leans as shown in FIG. In addition, it is preferable that the inclination of the vehicle body S be performed from the upper inclination air spring.

At this time, the vehicle body S and the vehicle body supporting device 1 are connected by a pin joint portion 8, and the vehicle body S is
Above the vehicle body S in the left-right direction,
The upper surface of the vehicle body supporting device 1, that is, the uppermost upper tilting air spring 24c supports the tilted vehicle body S while maintaining a horizontal state, and the tilting air springs 24a to 24c do not tilt with the vehicle body S. , Leaning air spring 2 when leaning the body
The height of 4a to 24c can be kept at an intended value.

Since the orifice or the throttle is provided in the port of the solenoid valve 6 communicating with the atmosphere, the air in the tilting air springs 24a to 24c is gradually discharged due to the resistance of the pipeline. In other words, the height of the vehicle body support device 1 decreases at an appropriate speed so that the inside of the vehicle body does not feel uncomfortable.

Thereafter, when the vehicle re-enters the straight road, the automatic control device 7 switches the solenoid valve 6 based on the rotational deviation angle and the traveling speed of the bogie D, so that the original air reservoir P and the tilting air springs 24a to 24a. 24c is communicated, and air is injected into the contracted tilting air springs 24a to 24c to return the heights of the tilting air springs 24a to 24c to a predetermined value.

As described above, in the vehicle body supporting device 1 of the present invention, the tilting air springs 24a to 24a
24c are stacked, and the biasing air springs 22 are used to allow the vehicle body S and the bogie D to be biased, and the tilting air springs 24a to 24c are used to tilt the vehicle body S. Thus, the control of the vehicle body deviation and the control of the vehicle body inclination are separated to simplify the control.

Also, since the displacement of the tilting air springs 24a to 24c in the height direction is executed only by opening and closing the solenoid valve 6, the instruction of the automatic control device 7 is simplified, and the control with high reliability is performed. System.

Further, since the positioning boss 242 for each of the inclination air springs 24a to 24c is provided, the inclination air springs 24a to 24c are provided.
The displacement in the height direction during leaning of the vehicle body a to 24c can be easily adjusted, and the height of the bogie D can be easily set even in a structure in which a plurality of leaning air springs are stacked.

Further, the upper ends of the positioning bosses 242 of the inclination air springs 24a to 24c are fixed to the upper surface of the air chamber, and the lower portions are the lower plate 23, the intermediate plate 25, and the upper plate 26.
Of the vehicle 10
0 travels on a curved road, the inclination air springs 24a to 24a-2
The cylindrical portion of the positioning boss 242 of FIG.
The tilting air springs 24a to 24c are not laterally displaced by contacting the insertion holes for inserting the positioning bosses a, 25a, and 26a.

Furthermore, in order to adjust the internal pressure of the tilting air springs 24a to 24c to a value related to the internal pressure of the biasing air spring 22, not only the biasing air spring 22 but also the spring constants of the tilting air springs 24a to 24c are set. Is easy to set, the vehicle body vibration is reduced, and a vehicle with a comfortable ride for passengers can be provided.

[Second Embodiment] Next, a vehicle body support device 100 according to a second embodiment will be described with reference to FIG. Body support device 10 according to second embodiment
0 is the inclination air springs 24 a to 24 of the first embodiment.
The air spring 22 for biasing is mounted on c.

More specifically, as shown in FIG.
Is a concave portion D1 in which a side surface of a central portion of the vehicle body S is formed in an inverted C shape.
The air spring 2 and the laminated rubber 3 are arranged at the center of the bogie frame D. Recess D1 of side beam
Are spread upward in an inverted U-shape, so that the horizontal movement of the vehicle body support device 1 can be made wider at the upper side. Therefore, when the biasing air spring 22 is disposed at the uppermost position, play required for lateral displacement of the biasing air spring 22 is not required, and the distance of the horizontal portion of the concave portion D1 provided at the center of the side beam is shortened. As a result, the distance between the axles attached to both ends of the bogie frame D can be reduced.

It should be noted that the present invention is not limited to the above-described embodiment, but may be modified within a range that can achieve the object of the present invention.
Improvements are included in the present invention. For example, in the drawing of FIG. 4, the truck of the present embodiment is a pillow (bolster).
Although it is described as a bolsterless trolley without a bolsterless trolley, it is not necessarily required to be a bolsterless trolley, and it can be applied to a direct mount trolley having a pillow and an indirect mount trolley.

Further, in the above embodiment, the structure is such that a plurality of inclined air springs are stacked, but the inside of one inclined air spring is formed as a multi-layered structure, and the supply of the air chamber of each layer is performed. The exhaust gas may be separately and independently controlled, and these are included in the technical concept of the present invention.

[0051]

The main effect of the present invention is that the rotation displacement of the bogie relative to the vehicle body is absorbed by the first air spring, and the inclination of the vehicle body is controlled by the second air spring and the vehicle body inclination control means. Since the control for allowing the rotational displacement and the control for tilting the vehicle body are performed separately, there is no need to perform complicated three-dimensional control, and the vehicle body tilt control can be performed easily and accurately. is there. In addition, the second air springs are stacked in a plurality of stages, and the height adjustment of each second air spring is performed separately and independently, so that the vehicle body inclination control can be performed more easily.

[Brief description of the drawings]

FIG. 1 is a side view of a vehicle body support device to which the present invention is applied.

FIG. 2 is a diagram showing a vehicle body support device to which the present invention is applied and a control system of the vehicle body support device.

FIG. 3 is a sectional view of a main part of a vehicle body support device to which the present invention is applied.

FIG. 4 is a view showing a state in which the vehicle body support device to which the present invention is applied is tilted.

FIG. 5 is a side view showing a vehicle body support device according to a second embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 vehicle body support device 2 air spring portion 3 laminated rubber 5 height adjustment device 6 solenoid valve 7 automatic control device 8 pin joint portion 9 pressure adjustment valve 22 biasing air spring (first air spring) 24 a to 24 c tilting air spring (Second air spring) 28a to 28c Supply / exhaust pipe 242 Positioning boss (height rise preventing means) 91 Pressure detector

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F16F 9/50 F16F 9/50

Claims (7)

[Claims] 1. A vehicle body tilting device for a railway vehicle that supports a vehicle body via a pair of air spring portions provided on left and right bogie frames, wherein the air spring portion adjusts an internal air amount to adjust the vehicle body. A first air spring that elastically supports the vehicle body and absorbs a rotational displacement of the bogie relative to the vehicle body on a curved road; and a second air spring that changes the height of the vehicle body by adjusting the amount of internal air. A vehicle body tilting device, characterized in that: 2. The vehicle leaning apparatus according to claim 1, wherein the second air spring is formed by being stacked in a plurality of stages, and the inflow and outflow of air are controlled independently for each stage. Body tilt device. 3. The body tilting apparatus according to claim 2, wherein the height of each step of the second air spring is controlled in two steps. 4. The vehicle body tilting device according to claim 2, wherein a height increase of the second air spring based on supplying air to each of the second air springs is limited to a predetermined position. A vehicle body tilting device comprising a rising prevention means. 5. The vehicle body tilting device according to claim 1, wherein the vehicle body is pin-connected to the air spring portion. 6. The vehicle leaning apparatus according to claim 1, wherein: an internal pressure detecting unit configured to detect an internal pressure of the first air spring; and an internal pressure detected by the internal pressure detecting unit.
Pressure adjusting means for adjusting the pressure of the second air spring to be equal to the internal pressure or a value obtained by multiplying the internal pressure by a predetermined ratio. 7. The vehicle body tilting device according to claim 1, wherein the air spring portion is attached to a bottom surface of a concave portion of a side beam provided on the bogie frame, the side surface provided in the bogie frame. The first air spring is integrally connected to an upper surface of the second air spring, and is a body tilting device.