JP4243149B2 - Joint type driving device for vehicle main motor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint type drive device for a vehicle main motor suitable for a railway vehicle.
[0002]
[Prior art]
In general, the outline of a joint type driving device for a vehicular main motor has a play in a hollow shaft of the main motor, the axle passes through, and wheels are mounted on both ends of the axle. The hollow shaft and the axle are conductively connected via a joint device, and the rotational power of the main motor is transmitted from the hollow shaft to the axle via the joint device.
[0003]
In recent years, an elastic joint using a material such as vibration rubber has been used as a joint device in order to reduce vibration during traveling and improve riding comfort (see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-301470
[Problems to be solved by the invention]
In Patent Document 1 that uses elastic joints such as vibration rubber for power transmission, it is possible to improve riding comfort by absorbing vibration during traveling, but the hollow shaft and the main motor are elastic. It comes to be supported through the joint.
[0006]
The elastic body constituting the elastic joint has a structure in which one is supported on the hollow shaft of the main motor and the other is supported on the axle, and is arranged in a plurality of circumferential shapes.
[0007]
After the assembly of the elastic joint is completed, for example, a measuring instrument such as a dial gauge is used on the axle to inspect whether there is a positional shift between the center axis of the hollow shaft of the main motor and the center axis of the axle.
[0008]
At the time of this inspection, if a positional shift occurs in each central axis, it is necessary to align each central axis on the same axis.
[0009]
In this case, the cause of the positional deviation of each central axis line may be an error in machining accuracy when machining the elastic joint, or an error due to combination accuracy at the time of assembly. In the former case, a new elastic joint with high accuracy has to be made again, which requires a great deal of labor and time. In the latter case, it is very difficult to adjust the combination.
[0010]
Accordingly, an object of the present invention is to provide a joint drive device for a vehicular main motor that can easily align the hollow shaft of the main motor and the center axis of the axle by relatively simple means.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to a first aspect of the present invention, there is provided a hollow shaft of a main motor, and an axle having play in the hollow shaft and having wheels mounted at both ends. A drive joint provided on the hollow shaft, a driven joint facing the drive joint and provided on the axle, and a plurality of drive-side elastic bodies provided along the circumference of the drive joint A holding member and a plurality of driven elastic body holding members facing the driving side elastic body holding member and provided on the driven joint, and comprising the driving side elastic body holding member and the driven side elastic body holding member A plurality of elastic bodies that are sandwiched and transmit power from the hollow shaft to the axle and support the hollow shaft of the main motor;
When the displacement occurs between the center axis of the hollow shaft and the center axis of the axle, the drive-side elastic body holding member that is orthogonal to the displacement direction in which the displacement has occurred and is opposed to the center axis. An alignment adjusting plate is inserted and set between the member side and the elastic body , or between the driven side elastic body holding member side and the elastic body .
[0012]
As a result, at the time of inspection after the assembly of the joint type driving device is completed, for example, when a positional deviation occurs between the center axis of one of the left and right hollow shafts and the central axis of the axle, the direction of the positional deviation is orthogonal. respectively insertion set alignment adjustment plate between the or the driven-side elastic body holding member side and the elastic member between the oppositely disposed the driving-side elastic member holding member and the elastic member across the central axis together with the fit . At this time, the hollow shaft or axle by moving along the positional deviation direction by pressing the pressure that by the elastic body, so the same axis which is aligned is obtained.
[0013]
In this case, it is not necessary to recreate even if the machining accuracy is incorrect, and the alignment adjustment can be performed.In addition, the elastic body is pressed in the compression direction by the alignment adjustment plate, so there is no unreasonable occurrence and the return movement The pressing force can be reliably transmitted to the hollow shaft or the axle.
[0014]
According to the second aspect of the present invention, the driving side elastic body holding member and the driven side elastic body holding member are detachably attached, and can be mounted and set together with the alignment adjusting plate at the time of attachment. It is characterized by that.
[0015]
As a result, after removing the drive-side elastic body holding member or driven-side elastic body holding member that is the position of alignment, it is attached together with the alignment adjustment plate to align the hollow shaft and the central axis of the axle. Work can be done easily.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings of FIGS. 1 to 5. In FIG. 5, reference numeral 1 denotes a bogie of a railway vehicle, and 3 denotes a main motor. 3 is supported by the cart 1 by a support device (not shown).
[0017]
The main motor 3 has a stator 5 and a rotor 7, and the stator 5 is fixed in a main electric case 9 of the main motor 3. The rotor 7 is mounted on a hollow shaft 11, and a current flows through the stator 5, whereby rotational power is applied to the hollow shaft 11 via the rotor 7.
[0018]
The hollow shaft 11 is rotatably supported at both ends by a bearing portion 13 such as a bearing in the main electric case 3, and an axle shaft 15 penetrates the inside thereof.
[0019]
Wheels 19 traveling along the rails 17 are fixed to both ends of the axle 15, and the axles 15 of the wheels 19 are rotatably supported by bearing cases 21. The bearing case 21 is supported by the carriage 1 via a suspension 23.
[0020]
On the other hand, power is transmitted to the hollow shaft 11 and the axle 15 via a joint device 25.
[0021]
As shown in FIG. 2, the coupling device 25 includes a drive joint 27 provided on the left and right sides of the hollow shaft 11, a driven joint 29 provided on the axle 15, opposed to the drive joint 27, and a drive joint 27. It consists of an elastic body 31 to which the driven joint 29 is coupled, a driving-side elastic body holding member 33 and a driven-side elastic body holding member 35 for fixing and supporting the elastic body 31 from the front and rear in the rotational direction A.
[0022]
The drive joint 27 is provided with a drive attachment portion 37 arranged at a predetermined interval, and the driven joint 29 is provided with a driven attachment portion 39 arranged at a predetermined interval. The drive mounting portion 37 and the driven mounting portion 39 have a structure in which the driven mounting portion 39, the drive mounting portion 37, and the driven mounting portion 39 are alternately arranged along the circumferential line.
[0023]
The elastic body 31 is made of an elastically deformable rubber material, and the front and rear receiving surfaces 41 a are metal receiving plates 41. The receiving metal 41 which forms the receiving surfaces 41a before and after the elastic body 31 has a shape arranged in parallel. The receiver 41 may be formed of a hard synthetic resin material.
[0024]
The elastic body 31 is disposed between the drive mounting portion 37 and the driven mounting portion 39 in the rotational direction A, and is fixedly supported by the driving side elastic body holding member 33 and the driven side elastic body holding member 35. Yes.
[0025]
The drive-side elastic body holding member 33 holds an internal contact mounting surface 33 a, front and rear stopper portions 33 b that prevent the elastic body 31 from being swung out by centrifugal force, and front and rear receiving surfaces 41 a of the elastic body 31. The front and rear tapered pressure holding surfaces 33c have a wedge-shaped cross section with the front and rear tapered pressure holding surfaces 33c. In addition, the material is made of aluminum to reduce the weight.
[0026]
As shown in FIG. 1, the taper-shaped front and rear pressing and holding surfaces 33c are secured in an opposing parallel state upon completion of mounting on the drive mounting portion 37 and the driven mounting portion 39, and are elastic as shown in FIG. The receiving surface 41a of 31 is pressed F from the normal E state to the e state, and is set to an inclination angle θ that gives the elastic body 31 a preload in the rotational direction.
[0027]
The contact mounting surface 33a of the drive-side elastic body holding member 33 is formed on a concave groove-like ceiling side that is open at the bottom, and has a mounting hole 43 that penetrates to the contact mounting surface 33a. Thereby, the head of the drive mounting portion 37 provided with the screw hole 45 enters the inside of the drive side elastic body holding member 33, penetrates the mounting hole 43, and is screwed into the screw hole 45. (The other is not shown in the figure) so as to be fixed in contact with the contact mounting surface 33a.
[0028]
The driven-side elastic body holding member 35 holds an internal contact mounting surface 35 a, front and rear stopper portions 35 b that prevent the elastic body 31 from being shaken out by centrifugal force, and front and rear receiving surfaces 41 a of the elastic body 31. The front and rear tapered pressure holding surfaces 35c have a wedge-shaped cross section with the front and rear tapered pressure holding surfaces 35c. In addition, the material is made of aluminum to reduce the weight.
[0029]
As shown in FIG. 1, the taper-shaped front and rear pressing holding surfaces 35c ensure a parallel state of being opposed to each other when the attachment to the drive attachment portion 37 and the driven attachment portion 39 is completed, and an elastic body as shown in FIG. The receiving surface 41a of 31 is pressed F from the normal E state to the e state, and is set to an inclination angle θ that gives the elastic body 31 a preload in the rotational direction.
[0030]
The contact mounting surface 35a of the driven-side elastic body holding member 35 is formed on the concave groove-shaped ceiling side opened at the lower side, and has a mounting hole 49 penetrating to the contact mounting surface 35a. As a result, the head of the driven attachment portion 39 provided with the screw hole 51 enters the driven elastic body holding member 35, penetrates the attachment hole 49, and engages with the screw hole 59. (The other is not shown in the figure) so as to be fixed in contact with the contact mounting surface 35a.
[0031]
The pressing and holding surface 33c of the driving side elastic body holding member 33 and the pressing and holding surface 35c of the driven side elastic body holding member 35 that sandwich the elastic body 31 are the support surfaces on which the alignment adjusting plate 55 is inserted and set as shown in FIG. I have.
[0032]
For example, as shown in FIG. 4, the alignment adjusting plate 55 presses the elastic body 31 in the compression direction when a displacement occurs between the center axis X of the hollow shaft 11 and the center axis Y of the main shaft 15. The hollow shaft 11 or the axle 15 is moved and corrected on the same axis by the pressing force, and a plurality of ones having different thicknesses d corresponding to the positional deviation amounts (actually in mm) of the central axes X and Y are prepared. Choose it and use it.
[0033]
As shown in FIG. 4, the use position of the alignment adjustment plate 55 is, for example, when the center axis lines X and Y are deviated by θ1 up and down, for example, in the horizontal direction of the drawing perpendicular to the misalignment direction. It is desirable to insert and set the two locations, for example, A1, A1 or B1, B1.
[0034]
As a result, the pressing force of the elastic body 31 is secured to the hollow shaft 11 or the axle 15 from both sides depending on the relationship between the action and the reaction. Fixes can now be made reliably without any deviation.
[0035]
Further, in FIG. 4, when each central axis X, Y is shifted from the center to the left, for example, θ2 position shift, two positions in the vertical direction of the drawing orthogonal to the position shift direction, for example, C1, It is desirable to insert and set C1 or D1, D1.
[0036]
As a result, the pressing force of the elastic body 31 is secured to the hollow shaft 11 or the axle 15 from both sides depending on the relationship between the action and the reaction. Fixes can now be made reliably without any deviation.
[0037]
According to the joint type drive device for a main motor for a vehicle configured as described above, when the assembly is completed, the center axis X of the hollow shaft 11 and the center axis Y of the axle 15 as shown in FIG. When the vertical displacement of θ1 occurs, the driven elastic body holding members 35 positioned on the left and right sides of the drawing with the central axes X and Y are removed as shown by the chain lines, and then the left and right driven elastic body holding members are removed. When reassembling 35, the alignment adjustment plate 55 is aligned with the pressure holding surface 35c of the driven elastic body holding member 35 on the left side of the drawing, and the alignment adjustment plate 55 is adjusted to the pressure holding surface 35c of the driven elastic body holding member 35 on the left side of the drawing. Each plate 55 is inserted and set.
[0038]
Thereby, the elastic body 31 is pressed in the compression direction, and the pressing force (arrow B) moves the hollow shaft 11 downward so that the central axes X and Y are aligned on the same axis. Become. In this case, the load in the compression direction of the elastic body 31 is balanced with the other elastic bodies 31 and the load is not dispersed to be an unreasonable load, but acts reliably as a pressing force for returning the hollow shaft 11 or the axle 15 to return. It becomes like this.
[0039]
【The invention's effect】
As described above, according to the present invention, the alignment adjusting plate is disposed between the drive-side elastic body holding member and the elastic body that are opposed to each other with the central axis in the direction orthogonal to the position shift direction. Alternatively, the center axis of the hollow shaft and the center axis of the axle can be easily aligned on the same axis by being inserted and set between the driven elastic body holding member and the elastic body .
[0040]
In addition, since it is only necessary to perform the work necessary for alignment adjustment, the work time and labor can be greatly reduced, and the workability is greatly improved.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a part of a joint device according to the present invention.
FIG. 2 is an exploded perspective view showing a part of the joint device.
FIG. 3 is an explanatory diagram of an elastic body.
FIG. 4 is an explanatory diagram in which an alignment adjusting plate is provided in one of the left and right joint devices.
FIG. 5 is an explanatory diagram of the entire joint type driving device of the vehicular main motor.
[Explanation of symbols]
3 main motor 11 hollow shaft 15 axle 19 wheel 27 driving joint 29 driven joint 31 elastic body 33 driving side elastic body holding member 35 driven side elastic body holding member 55 alignment adjusting plate X center axis Y of hollow shaft center of axle Axis

Claims (2)

The main motor has a hollow shaft, an axle having play in the hollow shaft and having wheels mounted on both ends, a drive joint provided on the hollow shaft, and a drive joint thereof. And a driven joint provided on the axle, a plurality of drive-side elastic body holding members provided along the circumference of the drive joint, and the drive-side elastic body holding member facing each other and the driven joint A plurality of driven-side elastic body holding members provided between the drive-side elastic body holding member and the driven-side elastic body holding member for transmitting power from the hollow shaft to the axle and for hollowing the main motor. A plurality of elastic bodies that support the shaft of
When the displacement occurs between the center axis of the hollow shaft and the center axis of the axle, the drive-side elastic body holding member that is orthogonal to the displacement direction in which the displacement has occurred and is opposed to the center axis. A joint type drive device for a vehicular main motor, wherein an alignment adjusting plate is inserted and set between the member side and the elastic body , or between the driven side elastic body holding member side and the elastic body .   2. The vehicle main body according to claim 1, wherein the drive side elastic body holding member and the driven side elastic body holding member are detachably attached, and can be mounted and set together with the alignment adjusting plate at the time of attachment. A joint type drive device for an electric motor.

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