JPH079726Y2 - Mounting device for rotating member for speed sensor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a device for concentrically mounting a rotary member for a speed sensor, which is mounted on an axle end of a railroad vehicle and detects the rotation speed of the axle, coaxially with the axle end.

[Conventional technology]

A railroad vehicle has a structure having front and rear bogies, and usually the bogies rotatably support two axles via axle boxes on both sides thereof. A conventional axle structure of such a railway vehicle will be described with reference to FIG. Axle 1 with wheels (not shown)
Is provided with a fulcrum shaft 1a into which the bearing 2 is fitted, a screw shaft 1b into which the bearing retainer 3 is screwed, and an axle end 1c into which the speed sensor rotating member 30 is fitted, in that order on both sides. . The bearing 2 is housed in a shaft box 4 and fixed by a bearing retainer 3. A rotary member 30 that rotates with the wheel is fitted into the axle end 1c, and the rotational speed of the rotary member 30 is measured by the speed sensor 5 to detect the accurate rotational speed of the wheel. The rotating member 30 has a gear 30a on its outer periphery.
The through hole 30b is fitted into the axle end 1c, is fastened to the bearing retainer 3 with the bolt 31, and rotates integrally with the axle 1.
An electromagnetic sensor is usually used as the speed sensor 5 and is fixed to the side surface of the axle box 4. The rotation speed of the wheel is obtained by detecting a change in magnetic flux caused by the gear 30a passing through the tip of the electromagnetic sensor. Therefore, the speed sensor 5
The distance δ between the tip and the gear 30c needs to be a predetermined value.

[Problems to be solved by the device]

As described above, when the rotary member 30 is mounted on the axle end 1c, mounting accuracy is required. Therefore, for new vehicles, the axle end is processed so as to satisfy the accuracy. However, when the speed sensor device is attached to the existing vehicle, although the axle end 1c of the axle 1 is processed concentrically,
The tolerance of the shaft diameter D1 does not satisfy the above accuracy, and is normally finished within a tolerance range of about ± 0.3 mm.
Therefore, if the through hole 30b of the rotating member 30 is finished to the same extent as the tolerance of the axle end 1c, a certain amount of backlash may occur in the fitting portion in some cases. As a result, the speed sensor 5
There is a problem in that the distance δ between the tip and the gear 30a fluctuates, which causes variations in measurement. Therefore, in order to solve the above problem, the actual finished dimension of the axle end 1c is measured, and the through hole 30b of the rotating member 30 is processed into a dimension corresponding to the finished dimension,
There is also a method of fitting the rotating member 30 into the axle end 1c by matching the actual product, but there is a problem that it takes time and costs are increased. Although it is conceivable to rework the axle end, it is practically impossible because the axle must be removed from the vehicle body once.

The present invention has been made in view of the above problems, and is intended to mount a rotary member without misalignment by using a structure for mounting a rotary member for a speed sensor.

[Means for Solving the Problems]

A speed sensor equipped with a rotating member that is attached to the end of the axle and that generates a rotation signal of the axle by a signal generating portion on the outer peripheral side, and a speed sensor that is provided so as to face the signal generating portion and that receives a signal from the signal generating portion. A device for mounting a rotating member for use, wherein the rotating member is provided on an outer peripheral portion, and an adjusting body in which a tapered hole and a screw hole concentric with the rotating member are formed in series is provided on an inner peripheral portion. Is temporarily fixed to the axle so that the tapered hole covers the end of the axle, and an outer diameter portion is formed with a taper portion that fits into the taper hole, and a taper ring divided into at least two is provided. A ring is permanently or temporarily fitted between the inner peripheral portion of the adjusting body and the outer peripheral portion of the axle end, and is fitted into the inner peripheral portion of the adjusting body so as to be screwed into the screw hole of the adjusting body. This taper is connected with the taper ring An adjusting member for moving the ring axially adjusting body after the rotating member is coaxially to the axle ends by the tapering and adjusting member is one that is fixed to the axle.

[Action]

By inserting a taper ring having a taper portion between the taper hole of the adjusting body provided with the rotating member and the end portion of the axle, and rotating the adjustment member by pushing the taper ring, the axle ring is moved. The play caused by the end tolerance is absorbed, and the adjuster and the axle end are concentric. As a result, the gap between the signal generating portion on the outer peripheral side of the rotating member and the speed sensor does not change due to the rotation of the axle, so that it is possible to prevent the reliability of the speed sensor from being lowered due to the change in the gap. Further, since it is not necessary to process the end of the axle, it is possible to easily attach the rotating member to the end of the existing axle at the site, for example.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. First
The figure is a cross-sectional view of the axle end of the present invention, and the point different from that of FIG. 4 is the mounting structure of the rotating member.

Reference numeral 11 denotes an adjusting body, which includes a rotating member 12 and an intermediate member 13. The rotating member 12 has a gear 12a on its outer circumference, and is fitted to the intermediate member 13 at the spigot portion 14. The intermediate member 13 is provided with a tapered hole 13a that widens toward the covered end portion of the axle end 1c and a screw hole 13b having a diameter larger than that of the tapered hole 13a in series. In particular, each part of the rotating member 12 and the intermediate member 13 is accurately processed so that the tapered hole 13a and the gear 12a of the rotating member 12 are concentric with each other. Then, the adjusting body 11 including the rotating member 12 and the intermediate member 13 is fixed to the bearing retainer 3 by the bolt 15. The adjusting body 11 is manufactured integrally, a gear 12a is provided on the outer peripheral portion thereof, and a taper hole 13a and a screw hole are formed on the inner peripheral portion thereof.
13b may be provided.

A two-divided taper ring 16 is inserted between the axle end 1c and the taper hole 13a of the intermediate member 13. The outer diameter of the taper ring 16 in the closed state is the taper portion 16a fitted into the taper hole 13a.
Is formed, and a hole portion 16b is formed so that the inner diameter can be fitted even with a large tolerance of the axle end 1c. Further, the adjusting member 17 is screwed into the screw hole 13b of the intermediate member 13 at the screw portion 17a thereof,
The rotation of the nut head 17b pushes and moves the taper ring 16. Reference numeral 18 is a stop bolt screwed into the flange portion 12b of the rotating member 12.

Next, the adjusting body 11, the taper ring 16, and the adjusting member described above.
The procedure for assembling the mounting device composed of 17 will be described with reference to FIG. The bearing retainer 3 is previously screwed onto the screw shaft 1b of the axle 1 and integrated with the bearing. Then, the taper ring 16 is loosely fitted in the tapered hole 13a of the intermediate body 13, and the threaded portion 17a of the adjusting member 17 is screwed into the screw hole 13b of the intermediate body 13 with a margin. Further, the rotating member 12 is fitted tightly into the intermediate body 13. Next, the taper ring 16, the intermediate body 13, and the adjusting member 1 so that the protrusion 13c of the intermediate body fits into the notch 1d of the axle end 1b.
7. Insert the rotating member 12 into the axle end 1c. And bolt 1
The intermediate body 13 and the rotating member 12 are temporarily fixed to the bearing retainer 3 by means of 5. The temporary fixing does not have a gap in the axial direction,
It is only enough to allow movement on a plane perpendicular to the axis for concentric adjustment. Next, the nut head 17b of the adjusting member 17 is rotated in the screwing direction using a tool to move the taper ring 16 in the pushing direction. The taper ring 16 is divided into two, and the taper portion 16a absorbs the dimensional difference caused by the tolerance of the axle end 1c while the taper hole 16a of the intermediate body 13 remains fitted (the concentricity is maintained). Move while doing. Therefore, the concentricity of the axle end 1c and the intermediate body 13, that is, the rotating member 12 is secured. When the pushing movement of the taper ring 16 reaches the limit, tighten the bolt 15 tightly. Then, the set bolt 18 is screwed in to complete the concentric mounting of the rotating member 12.

FIG. 3 is a sectional view showing another embodiment. As in FIG. 1, the mounting device includes an adjusting body 21, a taper ring 22, and an adjusting member 23. However, after the concentric mounting of the adjusting body 21, the taper ring 22 and the adjusting member 23 are removed so that the structure can be reused. The adjusting body 21 has an integral structure in which a gear 21a is provided on an outer peripheral portion thereof, and a taper hole 21b and a screw hole 21c which are concentric with the gear 21a are provided on an inner peripheral portion thereof. The taper ring 22 is formed with a tapered portion 22a having an outer diameter that fits in the tapered hole 21b in a closed state, and a hole portion 22b that is fit into the tapered ring 22b even with a larger tolerance of the axle end 1c. A concentric retaining ring 24 is fitted into the inner diameter portion of the taper ring 22, and a ring groove 22c that engages with a ring projection 23c of the adjusting member 23 described below is formed in the outer diameter portion. The concentric retaining ring 24 has the taper ring 22 divided into two parts, so that the taper ring 22 can be easily attached to the axle end 1c.
And the adjusting member 23 are integrated in the radial direction with a margin. Further, the adjusting member 23 is screwed into the screw hole 21c of the adjusting body 21 by the threaded portion 23a thereof, engages with the taper ring 22 by the ring projection 23c, and the taper ring 22 is integrated by operating the nut head 23b. Push to move. Reference numeral 25 is a bolt for fixing the adjusting body 21 to the bearing retainer 3. In the mounting device having the above configuration, first, the adjusting body 21 is temporarily fixed with the bolt 25. Then, the taper ring 22 integrated with the adjusting member 23 is inserted into the axle end 1c, the screw portion 23a of the adjusting member 23 is screwed into the screw hole 21c of the adjusting body 21, and the taper ring 22 of the adjusting member 23 is inserted. It is pushed and moved between the tapered hole 21b and the axle end 1c. After the concentricity between the adjusting body 21 and the axle end 1c is secured, the bolt 25 is tightly tightened. Moreover, a lock pin is driven in if necessary. After that, the taper ring 22 integrated with the adjusting member 23 is extracted and reused.

[Effect of device]

The speed sensor rotary member mounting device of the present invention is such that the rotary member facing the speed sensor is concentric with the axle end, and then the adjusting body is fixed to the axle. By inserting a taper ring between the adjuster and the shaft, and rotating the adjusting member to push it in, the play due to the tolerance of the axle end is absorbed, and the adjuster and the axle end have the same backlash. Since the core is ensured, it is not necessary to measure the axle end each time and process it according to the actual product, and high-accuracy mounting of the speed sensor rotary member can be performed easily and inexpensively. Further, since the gap between the speed sensor and the rotating member becomes uniform, it is possible to eliminate the signal fluctuation due to the fluctuation of the gap, and thus it is possible to prevent the reliability of the speed sensor from being lowered. Further, since it is not necessary to process the end of the axle, it is possible to easily attach the rotating member to the end of the existing axle, for example, on site. Further, when the taper ring and the adjusting member are removed after the adjusting body is coaxially fixed with respect to the axle, the increase in the weight of the axle can be minimized, and the tapering and The adjusting member can be used even when it is attached to another axle, and an economic effect can be expected.

[Brief description of drawings]

FIG. 1 is a sectional view of an axle end of the present invention, FIG. 2 is an exploded perspective view of the axle end of FIG. 1, FIG. 3 is a sectional view of an axle end according to another embodiment, and FIG. It is sectional drawing of an axle end. 1 ... Axle, 1c ... Axle end, 5 ... Speed sensor, 11,21
…… Adjuster, 12 …… Rotating member, 12a, 21a …… Gear, 13…
… Intermediate member, 13a, 21b… Taper hole, 13b, 21c… Screw hole, 16,22… Taper ring, 16a, 22a… Tapered part, 1
7,23 …… Adjustment member.

Claims (1)

[Scope of utility model registration request] 1. A rotating member attached to an end of an axle for generating a rotation signal of an axle by a signal generating portion on an outer peripheral side, and a speed sensor provided so as to face the signal generating portion and receiving a signal from the signal generating portion. A device for mounting a rotating member for a speed sensor, comprising: an adjusting body in which the rotating member is provided on an outer peripheral portion, and a taper hole and a screw hole concentric with the rotating member are formed in series on an inner peripheral portion. The adjusting body is temporarily fixed to the axle so that the taper hole covers the axle end, and a taper portion that fits into the taper hole is formed on an outer diameter portion and is divided into at least two parts. The tapering is permanently or temporarily fitted between the inner peripheral portion of the adjusting body and the outer peripheral portion of the axle end so that the tapering is screwed into the screw hole of the adjusting body. It is fitted around the circumference and connected to the taper ring. An adjusting member for moving the taper ring in the axial direction is provided, and the adjusting body is fixed to the axle after the rotating member is concentric with the end of the axle by the taper ring and the adjusting member. Rotating member mounting device.