JPH11105709A - Axle box support device for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the running performance with enhancement of the accuracy in the positioning of an axle box body, and to easily adjust a height of an axle spring, by mounting a liner having a thickness for adjusting an interval between an axle spring seat and an axle arm, between the axle spring seat and the axle arm. SOLUTION: A projection is formed on an axle central part of an axle box body 1 mounted on an axle edge of a ring axle, and a gap for adjusting the positioning of the axle box body 1 is formed on the projection, for mounting the axle spring seat 3 by fitting the same into the gap. The axle spring seat 3 can be positioned within a range of the gap in a horizontal plane to the axle box body 1, and the seat 3 is fixed by the bolts and nuts mounted on four corners as the fastening means to the axle box body 1. A projection part which projects upward, is formed on a central position of the axle spring of the axle spring seat 3, and an axle arm 2 comprising an opening part to be fitted and connected with the projecting part, is fixed through a linear 7. Whereby a distance between the axles of the ring axle . a diagonal size can be adjusted, and the height of the axle spring can be easily adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle box support device for a railway vehicle, in which an axle spring is provided between an axle box and a bogie frame, and the axle box body and the bogie frame are connected by a shaft beam arm. The present invention relates to an axle box support device for a railway vehicle suitable for a vehicle.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Application Publication No.
In the shaft beam type spring device as shown in the above item, there is no positioning adjustment part of the wheel axle with respect to the bogie frame, and the assembly accuracy is not sufficient due to manufacturing errors and assembly errors of each part. Was not enough. Further, in the shaft spring device in which a spring member is disposed on the shaft box, a spacer is inserted between the shaft box and the bogie frame, and a screw hole formed in the unsprung member from above the bogie frame is used. Then, by taking up the spring, a gap is provided between the shaft box body and the shaft spring seat, and a liner is inserted or pulled out to adjust the shaft spring height.
The adjustment work was performed in a narrow space between the vehicle body and the bogie, and the adjustment work was difficult.

[0003]

In such a conventional liner adjusting method, the accuracy of assembling and positioning the wheel axle with respect to the bogie frame is not sufficiently ensured. There is a problem that running performance is impaired due to abnormally high pressure and uneven wear of wheels occurs. In addition, when adjusting the height of the shaft spring in a state where the vehicle body is mounted on the bogie, the work is performed in a very narrow space between the bogie frame and the vehicle body, and the workability is poor, It took time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an axle beam type axle box support device for a railroad vehicle, in which the positioning accuracy of an axle box body with respect to a bogie frame is improved to improve running performance, and the height of an axle spring is easily adjusted. It is to improve workability by making it possible.

[0005]

According to the present invention, there is provided a shaft box for rotatably holding a wheel axle, and a vertical movement of the shaft axle, and the wheel axle with respect to a bogie frame via the shaft axle. In a railcar axle box support device comprising a beam arm for positioning and positioning, and an axle spring for elastically supporting the bogie frame with respect to the axle box, one end of the axle spring is fixed to the bogie frame. A shaft spring seat is provided at the other end of the shaft spring, the shaft beam arm is fixed to the shaft box via the shaft spring seat, and the shaft spring seat and the shaft box are Are disposed so as to be relatively movable in the axial direction of the shaft spring, and not to move relatively in a direction perpendicular to the axial direction of the shaft spring. The shaft beam arm and the shaft box are arranged in a horizontal plane. It is joined so that it can be aligned in the front, rear, left and right directions, and is fixed by fastening means, Between the spring seat and the shaft beam arm, placing the liner having a thickness of adjusting the distance between the shaft spring seat and the shaft beam arm is obtained by said.

[0006]

FIG. 1 shows an embodiment of the present invention, FIG. 2 is a view seen from below, and FIG. 3 is a view showing a section AA of FIG. In the figure, a projection is provided near the wheel of the wheel axle, that is, at the upper part of the center of the axle of the axle box 1 which is installed at the end of the axle. The shaft spring seat 3 is fitted and installed. The shaft spring seat 3 can be positioned with respect to the shaft box body 1 within a horizontal plane within a horizontal plane, and
It is fixed to the shaft box 1 by bolts and nuts, which are fastening means provided at the four corners. A projecting portion projecting upward is formed at the center of the shaft spring of the shaft spring seat 3, and the shaft beam arm 2 having an opening fitted and coupled to the projecting portion is fixed via a liner 7. It is configured to be. The shaft beam 2 has one end rotatably connected to the bogie frame 5 and the other end fixed to the shaft spring seat 3 through the opening. In addition, a seat for supporting the shaft spring 4 that is arranged in alignment with the center of the wheel shaft is formed on the upper surface of the other end of the shaft beam arm 2. The shape of the fastening portion between the shaft box 1 and the shaft spring seat 3 is configured so that the bolts and nuts can be installed at the four corners as shown in FIG. The flanges on both sides are cut away so that the jack and the jack support point S formed at a position opposite to the center of the wheel axle at the tip and the tip end are exposed from below the axle box 1. .

In such a configuration, the bogie frame 5 is elastically supported by the shaft spring seat 3 installed on the shaft box 1 and the spring member 4 installed via the shaft beam 2. The bogie frame 5 is supported elastically with the axle box 1 in the front-rear and left-right directions by a structure in which one end of the shaft beam arm 2 and the bogie frame 5 are elastically coupled. The adjustment of the distance between the shafts and the diagonal dimension of the wheel set is performed by fitting the shaft spring seat 3 and the shaft beam arm 2 together by fitting, and the positioning adjustment between the shaft box 1 and the shaft spring seat 3 is performed. And the bolts are tightened to adjust the shaft spring member 4 without disassembling it.

In order to prevent the load from being applied during traveling, a female thread is cut into the shaft spring seat 3 or a nut is welded to the shaft spring seat, and a stake bolt is inserted from below and tightened. In addition, a drill hole is formed in the flange portion of the shaft spring seat 3 and the shaft box body 1, and the rotation is stopped by an iron wire .

FIG. 4 shows a state of the section AA in FIG. 2 in a state of adjusting the liner in the configuration of FIG. The shaft beam arm 2 is lifted from below by a hydraulic jack 6, and a height adjusting liner 7 is inserted into a gap between the shaft spring seat 3 to adjust the height. At this time, the shaft box 1 and the shaft spring seat 3 have a structure in which the jack support point S serving as a support point at the time of jack-up is cut off as described above in order to reduce the size of the jack-up device. Has become.

According to such a configuration, a gap for positioning adjustment is provided between the shaft box 1 and the shaft spring seat 3, and the positional relationship between the two can be arbitrarily adjusted by bolts and nuts and fixed. Because of this configuration, the adjustment of the distance between the axes and the diagonal dimension of each shaft box 1 can be performed accurately and easily. Further, since the shaft spring seat 3 and the shaft beam arm 2 are fitted and connected to each other, the shaft beam arm 2 is lifted by the hydraulic jack 6 and the liner 7 is adjusted without disassembling the shaft spring member 4. can do. Therefore, it is possible to adjust the height of the shaft spring while the vehicle body remains on the bogie.

FIGS. 5, 6, and 7 have substantially the same structure as FIGS. 1, 2, and 3 except that a shaft spring seat 3 is mounted on a shaft beam arm 2, so that the distance between the shafts of the wheel sets is adjusted.・ Adjustment of the diagonal size is performed by fitting the shaft beam arm 2 and the shaft spring seat 3 by fitting, and the shaft box 1 and the shaft beam arm 2 are bolted together, and the fitting portion is provided with an appropriate gap. Adjusted at the joint. The fastening at this time is a method of cutting a female screw on the shaft beam arm 2 or attaching a nut to the shaft beam arm 3 by welding and inserting a spelling bolt from below to fasten, so that the load during running is not applied.
A drill hole is formed in the flange portion of the bolt and the shaft box body, and the rotation is stopped by the iron wire 8.

FIG. 8 is a sectional view taken along the line BB of FIG. 5 when the liner is adjusted during assembly. The shaft spring seat 3 is lifted from below by a hydraulic jack 6, and a height adjustment liner 7 is inserted into a gap between the shaft beam arm and the height is adjusted. In order to reduce the size of the apparatus, the shaft box 1 has a structure in which a portion S serving as a jack up support point is notched, and the shaft beam arm 2 has a hole formed in the portion S serving as a support point.

According to such a configuration, the same effects as those of the first embodiment can be achieved, and the shaft box 1
Since the front-rear and left-right forces acting between the shaft beam 2 and the shaft beam 2 are borne by the plurality of strong fastening means, the reliability can be improved as compared with the case where the force is borne by the fitting joint of the embodiment. .

[0014]

According to the present invention, in the axle beam type axle box support device for a railway vehicle, the distance between the axles and the diagonal dimension of the axle can be adjusted, and the height of the axle spring can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a sectional side view of a bogie frame showing an embodiment of a shaft spring device according to the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a sectional view taken along the line AA of FIG. 2;

4 is a cross-sectional view of the same portion as FIG. 3 showing a height adjustment state of the shaft spring device of FIG. 1;

FIG. 5 is a side view in section of a bogie frame showing another embodiment of the shaft spring device according to the present invention.

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

8 is a cross-sectional view of the same portion as FIG. 7 showing a height adjustment state of the shaft spring device of FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shaft box body, 2 ... Shaft beam arm, 3 ... Shaft spring seat, 4 ... Spring member, 5 ... Bogie frame, 6 ... Hydraulic jack, 7 ... Liner.

Claims (3)

[Claims] An axle box for rotatably holding a wheel axle; a shaft beam arm for allowing the up and down movement of the axle box and positioning the axle with respect to a bogie frame via the axle box; An axle spring for elastically supporting the bogie frame with respect to the axle box body, a railcar axle box support device comprising: a shaft spring, one end of which is fixed to the bogie frame; and the other end of the shaft spring A shaft spring seat is installed, the shaft beam arm is fixed to the shaft box via the shaft spring seat, and the shaft spring seat and the shaft box are relative to each other in the axial direction of the shaft spring. It is movable and is arranged so as not to relatively move in a direction perpendicular to the axial direction of the shaft spring. The shaft beam arm and the shaft box body can be aligned in the front-rear and left-right directions of the bogie in a horizontal plane. And the shaft spring seat and the shaft beam are fixed by fastening means. The shaft spring seat and placing a liner having a thickness of adjusting the distance between the axis beam arm, the axle box support device for railway vehicles, characterized in between. 2. The axle box support device for a railway vehicle according to claim 1, wherein a member installed above the liner is provided with a support portion that can be supported by a jack from below the axle box body. Axle box support device for railway vehicles. 3. The axle box support device for a railway vehicle according to claim 1, wherein at least one of the shaft beam arm and the shaft spring seat is fixed to the shaft box body by detachable fastening means. Axle box support device for railway vehicles.