JP3808713B2 - Rail car axle box support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an axle box support device for a railway vehicle, and it is possible to easily adjust the height of the bogie frame even in a state where the vehicle body is mounted on the bogie, and to be manufactured at a low cost. The present invention relates to a box support device.
[0002]
[Prior art]
Conventionally, in a shaft spring device in which a shaft spring is disposed on a shaft box, a spacer is inserted between the shaft box and the bogie frame, and then provided on the lower shaft spring seat disposed on the shaft box from above the bogie frame. By tightening the bolt into the screw hole, the lower shaft spring seat is lifted from the shaft box to provide a gap between the shaft box and the lower shaft spring seat, and a liner is inserted into this gap or the inserted liner is removed. The height of the bogie frame was adjusted by extracting.
[0003]
However, when adjusting the height of the bogie frame in such a way, the work space is not only narrow in the state where the vehicle body is placed on the bogie, but it is necessary to tighten the bolt with a large torque. It was not good and required a long working time.
[0004]
Therefore, in order to improve this poor workability, a cylinder device is constituted by a lower shaft spring seat and a shaft box, and by driving this cylinder device, the lower shaft spring seat is lifted from the shaft box and the shaft box and the lower portion are driven. It has been proposed to provide a gap between the shaft spring seats.
[0005]
[Problems to be solved by the invention]
In the case where the cylinder device is composed of the lower shaft spring seat and the shaft box, the workability of the conventional structure due to tightening of the bolt can be improved, but the cylinder device composed of the lower shaft spring seat and the shaft box is hydraulically operated. Since it is necessary to provide a function of sealing a compressive fluid such as the lower shaft spring seat and the shaft box portion, the manufacturing cost becomes very expensive.
[0006]
The present invention has been made in view of the above-mentioned problems, and the height of the bogie frame can be easily adjusted even in the state where the vehicle body is placed on the bogie, and can be manufactured at low cost. It is an object of the present invention to provide a railway car axle box support device.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the axle box support device for a railway vehicle according to the present invention has an upper surface and an outer side surface at the shaft spring placement position at the upper end portion of the axle box attached to both ends of the wheel shaft via bearings. A notch with an opening and a closed bottom surface is provided, and when adjusting the height of the bogie frame , a cylinder device is installed in the notch, so that the height of the bogie frame can be increased even when the vehicle body is placed on the bogie. Adjustment is possible. By doing this, when adjusting the height of the bogie frame, installing a cylinder device in the notch, moving the piston rod in the protruding direction and lifting the lower shaft spring seat, insert and withdraw the liner Can adjust the height of the bogie frame.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A railway car axle box support device according to the present invention includes an axle box attached to both ends of a wheel shaft via bearings, and the axle box is coupled to the carriage frame while allowing the axle box and the carriage frame to move up and down relatively. and axle box support mechanism for, in axle box support device comprising a shaft spring is interposed between the axle box and the bogie frame for supporting the bogie frame, the axial spring loading position at the upper end of the journal box, an upper surface and Even if the vehicle body is placed on the carriage , the carriage is installed on the carriage by installing a notch with an opening on the outer side and a notch with the bottom covered, and adjusting the height of the carriage frame. The height of the frame can be adjusted.
[0009]
Since the axle box supporting device for a railway vehicle in the present invention is configured as described above, when adjusting the height of the bogie frame, a cylinder device is installed in the notch, and the piston rod is moved in the protruding direction to move the lower part After lifting the shaft spring seat from the shaft box, the liner is inserted and the liner is pulled out so that the height to be set is reached.
[0010]
That is, the rail car axle box support device according to the present invention has good workability because the lower shaft spring seat is lifted by the cylinder device when the height of the carriage frame is adjusted. In addition, since the cylinder device is not always installed, it is not necessary to provide the lower shaft spring seat or the shaft box with a function of sealing a compressible fluid such as hydraulic pressure, and the manufacturing cost of the lower shaft spring seat and the shaft box portion is reduced. It will be cheap.
[0011]
【Example】
Hereinafter, a rail car axle box supporting device according to the present invention will be described based on the embodiments shown in FIGS.
FIG. 1 is a cross-sectional view showing a first embodiment of a rail car axle box support device according to the present invention, FIG. 2 (a) is an enlarged cross-sectional view of the main part of FIG. 1, and FIG. B sectional view, FIG. 3 is a view showing a state in which the cylinder device is installed in FIG. 2A and the lower shaft spring seat is lifted, and FIG. 4 is a second embodiment of the axle box supporting device for a railway vehicle in the present invention. FIG. 5 is a cross-sectional view, FIG. 5 is a cross-sectional view of a third embodiment of a rail car axle box support device according to the present invention, and FIG. The figure which cuts and shows an Example, (b) is BB sectional drawing of (a).
[0012]
FIGS. 1 to 5 show an example of a top spring type axle box support device. In FIGS. 1 to 5, reference numeral 1 denotes an axle box attached to both ends of a wheel shaft via bearings, and reference numeral 2a denotes this axle box 1. A lower shaft spring seat 3, which is mounted in a mounted manner, is a coil spring placed on the lower shaft spring seat 2a, and the carriage frame 4 is supported by the axle box 1 via the coil spring 3. Yes. Reference numeral 2b denotes an upper shaft spring seat interposed between the coil spring 3 and the carriage frame 4.
[0013]
Reference numeral 5 denotes a shaft box support mechanism that couples the axle box 1 to the carriage frame 4 while allowing the relative movement of the axle box 1 and the carriage frame 4. In the embodiment shown in FIG. It shows what is elastically coupled by fixing the respective ends to the axle box 1 and the carriage frame 4 with bolts 5b.
[0014]
Further, in the embodiment shown in FIG. 4, the longitudinal support is performed by the support link 5c having the spherical bushes 5d attached to both ends, and the lateral support is performed by the upper shaft spring seat 2b in which the boss portion 2ba is suspended, It shows what is performed by the support rubber 5e interposed between the lower shaft spring seats 2a where the boss shaft portion 2aa is raised.
[0015]
In the embodiment shown in FIG. 5, the arm 1 a is extended from the axle box 1 and the tip of the arm 1 a is attached to the carriage frame 4 to be elastically coupled.
[0016]
FIG. 6 shows an example of a wing-type axle box support device. In this wing-type axle box support device, 1 is respectively provided on an arm portion 1c that extends the axle box 1 in the front-rear direction of the carriage frame 4 with respect to the wheel shaft. A total of two coil springs 3 are placed one by one, and the bogie frame 4 is supported by these coil springs 3.
[0017]
In the embodiment shown in FIG. 6, the shaft box is supported by an upper shaft spring seat 2 b in which the boss shaft portion 2 bb is suspended and a support rubber 5 f interposed between the fitting holes 1 b provided in the shaft box 1. Is shown.
[0018]
The axle box support device for a railway vehicle according to the present invention is a notch portion having an open top surface, in which the cylinder device can be installed in a state where the coil spring 3 is placed on the upper end portion of the axle box 1. 1d is provided with two coil springs 3 for example. The size of the notch 1d is such that a cylinder device capable of lifting the lower shaft spring seat 2a in a state where the vehicle body is placed on the carriage can be installed. In the embodiment shown in FIG. 6, it goes without saying that the notch portions 1d are provided at the positions where the two coil springs 3 are placed.
[0019]
The axle box support device for a railway vehicle according to the present invention has the above-described configuration. When the height of the carriage frame 4 is adjusted, the cylinder device 6 is installed in the notch 1d as shown in FIG. Then, the piston rod is moved in the protruding direction to lift the lower shaft spring seat 2a, and an interval of s, for example, is provided between the upper surface of the axle box 1 and the lower surface of the lower shaft spring seat 2a.
[0020]
Thereafter, the liner 7 is inserted and the liner is extracted between the upper surface of the axle box 1 and the lower surface of the lower shaft spring seat 2a so that the height of the carriage frame 4 becomes a height to be set. . That is, in the rail car axle box support device of the present invention, the cylinder device is installed only when the height of the carriage frame 4 is adjusted, and the cylinder device is not always installed.
[0021]
【The invention's effect】
As described above, the axle box supporting device for a railway vehicle according to the present invention does not always have a cylinder device installed, so that the lower axle spring seat and the axle box have a function of sealing a compressible fluid such as hydraulic pressure. This is unnecessary, and the manufacturing cost of the lower shaft spring seat and the shaft box portion is low. Further, since the lower shaft spring seat is lifted by the cylinder device at the time of adjusting the height of the carriage frame, it has good workability.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first embodiment of a railway car axle box support device according to the present invention.
2A is an enlarged cross-sectional view of a main part of FIG. 1, and FIG. 2B is a cross-sectional view taken along line BB of FIG.
FIG. 3 is a view showing a state where a cylinder device is installed in FIG. 2A and a lower shaft spring seat is lifted.
FIG. 4 is a cross-sectional view showing a second embodiment of the axle box supporting device for a railway vehicle according to the present invention.
FIG. 5 is a cross-sectional view showing a third embodiment of a rail car axle box support device according to the present invention.
6A is a sectional view showing a fourth embodiment of a rail car axle box supporting apparatus according to the present invention, and FIG. 6B is a sectional view taken along line BB in FIG.
[Explanation of symbols]
1 axle box 1d notch 2a lower axle spring seat 3 coil spring 4 bogie frame 5 axle box support mechanism 6 cylinder device 7 liner

Claims (1)

An axle box attached to both ends of the wheel shaft via bearings, an axle box support mechanism for coupling the axle box to the carriage frame while allowing relative vertical movement of the axle box and the carriage frame, and the axle box and the carriage frame In the axle box support device comprising an axle spring interposed between and supporting the carriage frame,
In the shaft spring placement position at the upper end portion of the axle box, a cutout portion in which the upper surface and the outer side surface are opened and the lower surface is closed is provided,
A railcar characterized in that the height of the bogie frame can be adjusted even when the vehicle body is mounted on the bogie by installing a cylinder device at the notch when adjusting the height of the bogie frame. Shaft box support device.

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