JPH10181597A - Axle spring gear for rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten positioning accuracy of an axle box body to a truck frame and facilitate height adjustment of an axle spring by jacking an axle beam arm upward from below to provide a clearance between an axle spring set and the axle beam arm, and inserting a liner in this clearance. SOLUTION: A truck frame 5 is elastically supported by a spring member 4 installed through an axle beam arm 2 and an axle spring seat 3 installed on an axle box body 1. The truck frame 5 is elastically supported to the axle box body 1 in longitudinal and lateral directions by structure of connecting one end part of the axle beam arm 2 elastically to the truck frame 5. The center distance and diagonal dimension of a wheel set are adjusted by fitting the axle spring seat 3 and axle beam arm 2 to each other. At the time of liner adjustment, the axle beam arm 2 is lifted by a hydraulic jack 6 from below, and a height adjusting liner 7 is inserted in a space to the axle spring seat 3 to adjust height.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axle spring device for a railway vehicle, and more particularly to an axle spring provided on an axle box for supporting a bogie frame and positioning the axle box with an axle beam. The present invention relates to a novel railcar shaft spring device.

[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 a so-called shaft beam type shaft spring device in which a spring member is disposed immediately above a shaft box. An object of the present invention is to improve workability by enabling height adjustment to be easily performed.

[0005]

In order to solve the above-mentioned problems, a shaft box and a shaft beam arm are divided into a fastening structure, so that the distance between the shaft and the shaft beam between the shaft box and the shaft beam is diagonal. Dimensions can be adjusted, and a liner insert for height adjustment is provided at the joint between the shaft beam arm and the shaft box, and the liner adjustment is facilitated by performing spring killing with a hydraulic jack from below the bogie. .

That is, the present invention provides an axle box provided near each wheel of a wheel axle, and a bogie frame provided on each of the axle boxes corresponding to the axis center of the axle box. A shaft spring supported on the box body, and disposed between the shaft box body and the shaft spring, one end of which is fixed to the bogie frame and the other end of which is connected to the shaft box body with the shaft box body. A shaft beam arm that is removably installed with a gap for position adjustment provided therebetween, and a shaft that is disposed between the shaft box body and the shaft spring and that is fitted to and coupled to the other end of the shaft beam arm. It is characterized by comprising a spring seat and a liner removably inserted between the shaft beam arm and the shaft spring seat.

A shaft spring seat is mounted on the upper part of the shaft box body, a shaft beam arm is mounted on the shaft spring body, and a spring member is disposed on the shaft beam arm. A height between the shaft spring seat and the shaft beam arm is provided. It is configured so that the adjustment liner can be inserted.

The fitting between the shaft box and the shaft spring seat is provided with an appropriate gap for adjusting the distance between the shafts and the diagonal dimension.
The shaft spring seat and the shaft beam arm are properly fitted. When assembling the bogie, with the axle beam arm fixed to the bogie frame, after accurately determining the mounting position of the wheel axle with respect to the bogie frame with an assembling jig, by fastening the axle box body and the axle spring seat, The assembly accuracy of the bogie frame and the wheel set is determined. Thereafter, unless the fastening is loosened, the assembly accuracy of the wheel set is ensured.

At the time of adjusting the shaft spring liner, the shaft beam arm is jacked up from below, so that a gap is provided between the shaft spring seat and the shaft beam arm to insert the liner.

At this time, the shaft box and the shaft spring seat are fastened to each other, so that the distance between the shafts and the diagonal dimension do not change. Such a system can be configured even if the vertical relationship between the shaft spring seat and the shaft beam arm is reversed.

Further, in order to push up the shaft spring seat disposed above the shaft box body from below the shaft box body, the shaft box body and the flange of the shaft spring seat have a structure in which a fulcrum of the jack-up is cut out.

[0012]

FIG. 1 shows an embodiment of the present invention, FIG. 2 is a view from below, and FIG. 3 is a view showing a section AA of FIG. In the figure, a projection is provided near the center of the axle box 1 installed near the wheel of the wheel set, that is, at the shaft end, and the axle box 1 is attached to the projection.
The shaft spring seat 3 is fitted and installed with a gap for positioning adjustment. The shaft spring seat 3 can be positioned in the horizontal plane with respect to the shaft box 1 within the range of the gap, and is fixed to the shaft box 1 by bolts and nuts, which are fastening means provided at four corners thereof. You. 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. One end of the shaft beam arm 2 has a bogie frame 5.
The other end is fixed to the shaft spring seat 3 through the opening. Also, the shaft beam arm 2
A seat for supporting the shaft spring 4 arranged in alignment with the center of the wheel set is formed on the upper surface of the other end of the shaft. As shown in FIG. 2, the shapes of the shaft box 1, the shaft spring seat 3, and the fastening portion are such that the bolts and nuts can be installed at the four corners thereof. The flanges on both sides are cut away so that the jack support point S formed at a position opposite to the center of the axle at the tip end and the tip end is exposed from below the shaft box 1. I have.

In such a configuration, the bogie frame 5 is elastically supported by the shaft spring seat 3 provided on the shaft box 1 and the spring member 4 provided 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 by fitting them together, and adjusting the positioning between the shaft box 1 and the shaft spring seat 3. 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 and attached to the shaft spring seat, and a spelling bolt is inserted from below and tightened. A drill hole is formed in the flange of the seat 3 and the shaft box 1, and the rotation is stopped by the iron wire 8.

FIG. 4 shows the 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 the hydraulic jack 6, and a height adjustment liner 7 is inserted into a gap between the shaft spring seat 3 and height adjustment is performed. 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 with 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 the shaft spring seat 3 is mounted on the shaft beam arm 2, and the distance between the shafts of the wheel set 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 is not applied during traveling.
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. The shaft spring seat 3 is lifted from below by a hydraulic jack 6, and a height adjusting liner 7 is inserted into a gap between the shaft beam arm and the shaft to adjust the height. 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 effect as that of the above-described 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. .

[0019]

According to the present invention, in a shaft beam type shaft spring device, the distance between the shafts and the diagonal dimension of the wheel axle can be adjusted, and the shaft spring height can be easily adjusted even in the present state. The configuration of the device is possible.

[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 (1)

[Claims] An axle box provided near each wheel of a wheel axle, and a bogie frame is disposed on each of said axle boxes corresponding to the axis center of the axle box. A shaft spring, which is disposed between the shaft box and the shaft spring. One end is fixed to the bogie frame and the other end is adjusted between the shaft box and the shaft box. A shaft beam arm that is detachably provided with a clearance for use, a shaft spring seat that is disposed between the shaft box body and the shaft spring and that is fitted and coupled to the other end of the shaft beam arm; A shaft spring device for a railway vehicle, comprising a liner detachably inserted between the shaft arm and a shaft spring seat.