JP3906632B2 - Height detection apparatus and railcar carriage - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a height detection device for detecting the height of an air spring of a railcar carriage and a railcar for a railcar, and in particular, a height obtained by combining an analog angle sensor coaxially with a rotating shaft of an automatic height adjustment mechanism. The present invention relates to a detection device and a railcar bogie.
[0002]
[Prior art]
When the railway vehicle passing through the curved road does not travel at a speed commensurate with the amount of cant, the lateral acceleration acts on the passengers and the riding comfort is deteriorated. In recent years, there has been proposed a device for inclining the vehicle body inside the curve in a curved section using an air spring interposed between the vehicle and the vehicle body in order to cancel the lateral acceleration.
[0003]
In such a device, when the vehicle body is tilted, it is necessary to detect the height of the air spring. Japanese Patent Application Laid-Open No. 11-78875 and Japanese Patent Application Laid-Open No. 11-78876 disclose a height detection device that detects the height of an air spring.
[0004]
The height detection device disclosed in Japanese Patent Application Laid-Open No. 11-78875 detects the rotation angle of the operation lever of the automatic height adjustment valve using a digital angle sensor such as an absolute encoder, Is what you want.
In addition, the digital angle sensor disclosed in Japanese Patent Application Laid-Open No. 11-78875 is provided with a toothed gear that meshes with the eccentric cam that is connected to the shaft so as to rotate together with the shaft for operating the automatic height adjustment valve. It is transmitted to the vehicle height measuring encoder via a belt. On the other hand, the angle sensor in the vehicle height measuring device disclosed in Japanese Patent Application Laid-Open No. 11-78876 is provided on the same axis as the adjusting rod that connects the horizontal lever and the vertical lever.
[0005]
[Problems to be solved by the invention]
However, the angle sensor disclosed in Japanese Patent Application Laid-Open No. 11-78876 has a problem that the influence of vertical vibration acceleration transmitted from the carriage is large because it is provided at the connecting portion between the horizontal lever and the vertical lever. That is, since the vertical vibration in the connecting portion is a relative vertical vibration between the carriage and the vehicle body, the angle sensor is adversely affected, and the reliability and durability of the angle sensor are reduced.
[0006]
In addition, the angle sensor disclosed in Japanese Patent Laid-Open No. 11-78875 is different from the angle sensor disclosed in Japanese Patent Laid-Open No. 11-78876 in that an angle sensor is provided on the automatic height adjustment valve side, that is, the vehicle body side. The above problems can be avoided. However, even when the vehicle height changes and the shaft that operates the automatic height adjustment valve rotates, the rotation is engaged from the shaft to the cam that is connected to the shaft so as to rotate integrally therewith. To the toothed belt to be transmitted from the toothed belt to the toothed pulley that meshes with the toothed belt and thus to the angle sensor that rotates with the toothed pulley. Therefore, there is a problem that the number of parts is increased, and there is a problem that the size of the device is increased due to the increase in the number of parts.
[0007]
In addition, when a digital angle sensor is used, the number of necessary wirings increases as the amount of information increases, and as a result of the downsizing of the height detection device, it is impossible to meet the demands for downsizing of the railcar bogie. was there. In particular, Japanese Patent Application Laid-Open No. 11-78876 has a problem that the configuration is extremely complicated and the apparatus becomes large.
[0008]
Furthermore, the absolute encoder is designed to detect the absolute position of the rotation angle by placing slits with various patterns on concentric circles on the reflecting surface and arranging a light emitting diode, phototransistor and index scale for each slit. is there. However, since railroad vehicles are used outdoors, when an absolute encoder is used as an angle sensor, there is a problem that dust, oil, etc. adhere to the reflecting surface, leading to a decrease in detection accuracy. Furthermore, since the angle is detected using a light-emitting diode, the light-emitting diode is consumed over time, so it has to be frequently replaced and there is a problem in terms of maintenance. In other words, since it is not necessary to increase the accuracy of the air spring height, it has been desired to develop a height detector that can reduce the size of the device and reduce the maintenance burden rather than the accuracy.
[0009]
The present invention has been made in view of such circumstances, and the object of the present invention is to reduce the equipment configuration and to reduce the maintenance burden by improving durability and reliability. An object of the present invention is to provide a height detection device and a railcar carriage.
[0010]
[Means for Solving the Problems]
Height detection apparatus according to the first invention, the support pillars erected before Symbol bogie that on the truck are mounted to the vehicle body via an air spring, the arm is pivotally supported swingably The swinging portion of the arm is connected to a rotation shaft provided on the vehicle body so as to be integrally rotatable. Supplying / exhausting compressed air to / from the air spring by rotation of the rotation shaft. to the height detection device for opening and closing the automatic height adjustment valve is provided on the rotating shaft and coaxially with an angle sensor for detecting the rotational angle of the shaft該回, the angle sensor, the rotation shaft and integrally rotatable magnet case, and said the said magnet case voltage proportional to the rotation angle of a magnetic potentiometer that consists analog angle sensor for outputting via a cable To do.
[0011]
In the first aspect of the invention, the pivot portion of the arm is connected to the support column standing on the carriage, and the swinging portion at the other end of the arm is connected to the rotation shaft provided in the vehicle body so as to be integrally rotatable. ing. The arm swings in the vertical direction according to the height of the air spring, and rotates a rotating shaft connected to the swinging portion so as to be integrally rotatable. An angle sensor for detecting the rotation angle of the rotation shaft is provided on the same axis of the rotation shaft so that the height of the air spring is detected from the detected rotation angle. can do.
[0012]
According to a second aspect of the present invention, in the first invention, the projecting portion of the rotating shaft is inserted into the concentric magnet case, and the rotating shaft and the magnet case rotate integrally, A detection shaft of a magnetic potentiometer having a diameter smaller than the diameter of the magnet case is inserted into the other end of the magnet case in a non-contact state with the magnet case .
[0013]
In the second invention, since the height is detected by using an analog type angle sensor instead of a digital type as the angle sensor, it is possible to further reduce the size of the device configuration and to provide durability. In addition, the maintenance burden can be reduced by improving the reliability.
[0014]
A railcar carriage according to a third aspect of the present invention includes the height detection device according to the first or second aspect of the present invention.
[0015]
In the third aspect of the invention, since the railway vehicle carriage provided with the above-described height detection device is provided, it is possible to further reduce the size of the railway vehicle carriage.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is a schematic perspective view showing a main part of a railway vehicle carriage 1. In the figure, reference numeral 10 denotes a front carriage of a railway vehicle, and 11 denotes a rear carriage. Air springs 8a and 8b are installed on the front carriage 10, and air springs 8c and 8d are installed on the rear carriage 11, respectively. The air springs 8a to 8d (hereinafter referred to as the air spring 8) are provided with an air supply valve 3 and an exhaust valve 4 that increase or decrease the amount of air in the air spring 8 according to instructions from the control unit 5.
[0017]
When raising the air spring 8, an electromagnetic valve (not shown) in the air supply valve 3 is opened, and the air in the original air reservoir 6 is sent to the air spring 8 through the air pipe 2. On the other hand, when the height of the air spring 8 is lowered, an electromagnetic valve (not shown) in the exhaust valve 4 is opened to release the air in the air spring 8 to the atmosphere.
[0018]
Reference numeral 7 denotes a height detecting device according to the present invention, which includes a support column 72, an arm 71, an automatic height adjusting valve 73, an analog angle sensor 70 (see FIG. 3), and the like. While detecting the height of the vehicle body D with respect to the front carriage 10 or the rear carriage 11, the height of the air spring 8 is mechanically adjusted when the vehicle body D is inclined.
[0019]
FIG. 2 is a schematic diagram showing a cross section of the railway vehicle carriage 1. One end of the support pillar 72 is erected on the front carriage 10 so as to face the vehicle body D from the upper surface of the front carriage 10, and the other end is rotatably connected to the pivot portion 71 b of the arm 71.
[0020]
3 is a schematic perspective view showing the height detection device 7 according to the present invention, FIG. 4 is a cross-sectional view of the height detection device 7 according to the present invention, and FIG. 5 is an attachment of the height detection device 7 according to the present invention. FIG. 6 is a front view of the height detecting device 7 according to the present invention. At one end of the rotation shaft 74 fitted into the substantially central portion of the automatic height adjustment valve 73, an appropriate length portion protrudes from the casing of the automatic height adjustment valve 73. The moving part 71 a is connected to the moving part 71 a so as to be integrally rotatable, and the rotating shaft 74 is also rotated as the arm 71 swings. The automatic height adjusting valve 73 is opened and closed by this rotation.
[0021]
The other end of the rotating shaft 74 is also provided with an appropriate length projecting from the casing of the automatic height adjusting valve 73, and the projecting portion has an analog angle sensor comprising a magnet case 76, a potentiometer 77 and a cable 77a. 70 is provided on the same axis as the rotation shaft 74. The projecting portion of the rotating shaft 74 is inserted into a concentric magnet case 76 and screwed together with the magnet case 76 by a screw 75 so as to be integrally rotatable. On the other hand, a detection shaft 77 b of a potentiometer 77 having a diameter smaller than the diameter of the magnet case 76 is inserted into the other end of the magnet case 76 in a non-contact state with the magnet case 76. The potentiometer 77 is fixed by an appropriate means, and the detected voltage is output to the controller 5 via the cable 77a.
[0022]
When the arm 71 rotates above the horizontal position, the rotation shaft 74 rotates and the automatic height adjustment valve 73 supplies pressurized air to the air spring 8 and conversely rotates below the horizontal position. In this case, the rotation shaft 74 is rotated and the automatic height adjustment valve 73 is switched to the state in which the pressurized air of the air spring 8 is discharged. The potentiometer 77 outputs a voltage proportional to the rotation angle of the magnet case 76 to the control unit 5, and the control unit 5 refers to a conversion table stored in a RAM (not shown) to set the output voltage to the height of the air spring 8. Convert. The height of the air spring 8 can be calculated by multiplying the rotation angle of the magnet case 76 by the length of the arm 71 in the longitudinal direction.
[0023]
In this embodiment, the analog angle sensor 70 is provided at a position facing the arm 71 via the automatic height adjustment valve 73. However, the present invention is not limited to this, and the analog angle sensor 70 is provided on the arm 71 side. You may make it provide in. Furthermore, although the magnetic potentiometer is used in the present embodiment, the present invention is not limited to this, and other analog angle sensors such as a resolver may be used.
[0024]
【The invention's effect】
As described above in detail, in the first invention, the pivot portion of the arm is connected to the support column that is erected on the carriage, and the swinging portion at the other end of the arm is integrated with the rotation shaft provided on the vehicle body. It is linked movably. The arm swings in the vertical direction according to the height of the air spring, and rotates a rotating shaft connected to the swinging portion so as to be integrally rotatable. The analog angle sensor for detecting the rotation angle of the rotation shaft is provided on the same axis as the rotation shaft, and the height of the air spring is detected from the detected rotation angle. Can be reduced in size, and the maintenance burden can be reduced by improving durability and reliability.
[0025]
In the second invention, since the height is detected by using an analog type angle sensor instead of a digital type as the angle sensor, it is possible to further reduce the size of the device configuration and to provide durability. In addition, the maintenance burden can be reduced by improving the reliability.
[0026]
In the third invention, since the railway vehicle carriage provided with the above-described height detection device is provided, the present invention is excellent in that it is possible to further reduce the size of the railway vehicle carriage. Can have an effect.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a main part of a railway vehicle carriage.
FIG. 2 is a schematic view showing a cross section of a railcar bogie.
FIG. 3 is a schematic perspective view showing a height detection apparatus according to the present invention.
FIG. 4 is a cross-sectional view of a height detection apparatus according to the present invention.
FIG. 5 is an exploded perspective view showing a mounting structure of a height detection device according to the present invention.
FIG. 6 is a front view of a height detection apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Railcar bogie 2 Air pipe 3 Air supply valve 7 Height detection apparatus 10 Front bogie 11 Rear bogie 70 Analog type angle sensor 71 Arm 71a Swing part 72 Support pillar 73 Automatic height adjustment valve 74 Rotating shaft 8a, 8b, 8c, 8d Air spring

Claims (3)

A support pillar erected before Symbol bogie that on the truck are mounted to the vehicle body via an air spring, the arms are pivotally supported in a swingable swing of the arm is the A height that opens and closes an automatic height adjustment valve that supplies and discharges pressurized air to and from the air spring by the rotation of the rotation shaft. In the detection device,
Provided with an angle sensor that is provided coaxially with the rotation shaft and detects a rotation angle of the rotation shaft;
The angle sensor, the rotation shaft integrally rotatable magnet case, and a voltage proportional to the rotation angle of the magnet case, magnetic potentiometers that consists analog output via a cable A height detection device characterized by being an angle sensor. The projecting portion of the rotating shaft is inserted into the concentric magnet case, and the rotating shaft and the magnet case rotate integrally, and the other end of the magnet case is smaller than the diameter of the magnet case. The height detection device according to claim 1 , wherein a detection shaft of a magnetic potentiometer having a small diameter is inserted in a non-contact state with the magnet case .   A carriage for a railway vehicle, comprising the height detection device according to claim 1.

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