JP7457238B2 - Lifting equipment and railway vehicles equipped with it - Google Patents

Description

The present invention relates to a suspension device and a railway vehicle equipped with the same.

A suspension device for suspending various devices such as motors is provided under the floor of a railway vehicle (see, for example, Patent Document 1). Figure 8 shows an example of a conventional suspension device. Figure 8(a) is a perspective view, and Figure 8(b) is a front view.

As shown in FIG. 8, the hoisting device 200 has a structure in which a hoisting member 300 for suspending equipment such as a motor is detachably held by a holding member 400 having a notched groove 400a. The hoisting member 300 also has a shaft portion 310 for suspending the equipment and a flange portion 320 for being held by the holding member 400.

JP 2001-315642 A

By the way, since shaking occurs when the railway vehicle runs, the equipment suspended by the hanging device 200 will also be shaken from side to side. At this time, high stress may be generated in the connecting portion 500 between the shaft portion 310 and the flange portion 320 of the hanging member 300 due to shaking. Therefore, in designing the hanging device 200, it is required to suppress generation of high stress in the connecting portion 500.

An object of the present invention is to solve the above-mentioned design problem and provide a suspension device that can suppress the occurrence of high stress at the connection between the shaft portion and the flange portion of the suspension member, and a railway vehicle equipped with the same. do.

The present invention has been made to solve the above problems, and its gist includes the following suspension device and a railway vehicle equipped with the same.

(1) a hanging member having a shaft portion extending in a first direction and a flange portion expanding from the shaft portion in a direction perpendicular to the first direction;
a support surface that supports the flange portion in the first direction; and a support surface that faces the support surface in the first direction so as to sandwich the flange portion between the support surface and the flange portion in the first direction. a holding member having a regulating surface that regulates the movement of the
one or more insertion members provided between the flange part and the support surface and at least one between the flange part and the regulation surface,
the one or more insert members include an elastic member;
Hanging device.

(2) the elastic member is provided between the flange portion and the regulating surface;
The hanging device according to (1) above.

(3) the flange portion is supported by the support surface via the insertion member;
The hanging device according to (1) or (2) above.

(4) In a predetermined cross section parallel to the first direction and a second direction perpendicular to the first direction, the flange portion has an inclined surface that faces the support surface and is supported by the support surface,
The inclined surface is spaced apart from the support surface in the first direction as it approaches an end of the flange portion in the second direction.
A suspension device described in any one of (1) to (3) above.

(5) In the predetermined cross section, the inclined surface extends linearly;
The hanging device according to (4) above.

(6) In the predetermined cross section, the inclined surface is curved so as to be convex toward the support surface.
The hanging device according to (4) above.

(7) Equipped with the hanging device according to any one of (1) to (6) above,
railway vehicle.

(8) Equipped with a hanging device according to any one of (4) to (6) above,
configured to proceed in the normal direction of the predetermined cross section;
railway vehicle.

According to the present invention, it is possible to suppress the occurrence of high stress at the connection portion between the shaft portion and the flange portion of the hanging member.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the structure of the hanging device based on one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is an exploded perspective view for demonstrating the structure of the hanging device based on one Embodiment of this invention. FIG. 2 is a front view of a hanging member according to an embodiment of the present invention. It is a sectional view for explaining the composition of the hanging device concerning one embodiment of the present invention. It is a sectional view for explaining a hanging device concerning other embodiments of the present invention. It is a sectional view for explaining a hanging device concerning other embodiments of the present invention. It is a sectional view for explaining a hanging device concerning yet another embodiment of the present invention. It is a diagram showing an example of a conventional hanging device. (a) Perspective view, (b) Front view.

Hereinafter, a suspension device according to an embodiment of the present invention will be described with reference to each figure. Although not shown in the drawings, the suspension device described below is used, for example, in a railway vehicle. Specifically, for example, it is provided on the truck frame to support a drive device (motor).

FIG. 1 is a perspective view showing the configuration of a hanging device 100 according to an embodiment of the present invention. Moreover, FIG. 2 is an exploded perspective view for explaining the configuration of the hanging device 100 according to one embodiment of the present invention. Note that in FIGS. 1 and 2, arrows indicating the X direction, Y direction, and Z direction, which are orthogonal to each other, are attached. In the following description, the X direction will be referred to as a first direction X, the Y direction will be referred to as a second direction Y, and the Z direction will be referred to as a third direction Z. Also, in each of the figures after FIG. 3, a first direction X, a second direction Y, and a third direction Z are appropriately labeled. Note that in this embodiment, the first direction X is an up-down direction.

As shown in Figures 1 and 2, the suspension device 100 comprises a suspension member 1, a holding member 2, and one or more (four in this embodiment) insert members 3a to 3d. In this embodiment, the suspension member 1 and the holding member 2 are made of, for example, a metal material (steel, etc.). As will be described later, the insert members 3a to 3d include an elastic member (for example, rubber).

The hanging member 1 includes a shaft portion 11 extending in a first direction X, a flange portion 12 expanding from the shaft portion 11 in a direction perpendicular to the first direction It has a locking part 13 extending in the first direction X. In this embodiment, the shaft portion 11 and the locking portion 13 have a circular shape in a cross section perpendicular to the first direction X.

FIG. 3 is a front view of the hanging member 1 according to one embodiment of the present invention. As shown in FIG. 3, in this embodiment, the shaft portion 11 has a connecting portion 11a connected to one side surface 12a of the flange portion 12 in the first direction X. As shown in FIG. In the present embodiment, the closer the connecting portion 11a is to the flange portion 12, the larger the area of the cross section perpendicular to the first direction X and the larger the expansion rate of the area. Note that, although detailed description will be omitted, various devices (such as a drive device for a railway vehicle) are hung from the shaft portion 11, for example.

FIG. 4 is a sectional view showing the internal structure of the hanging device 100. As shown in FIGS. 1, 2, and 4, the holding member 2 includes a side wall 20 having a substantially U-shape when viewed from the first direction X, and one end (lower end) of the side wall 20 in the first direction X. It has a plate-shaped support part 22 provided in the first direction X, and a plate-shaped restriction part 24 provided in the other end (upper end) of the side wall part 20 in the first direction X. Referring to FIGS. 2 and 4, in this embodiment, the support portion 22 has a support surface 22a, and the restriction portion 24 has a restriction surface 24a. The support surface 22a is a surface of the support section 22 that faces the regulation section 24 side in the first direction X, and the regulation surface 24a is a surface of the regulation section 24 that faces the support section 22 side in the first direction X. be.

In addition, in this embodiment, the side wall part 20 and the support part 22 are formed of one member, and the regulating part 24 is formed of a different member from the side wall part 20, but the structure of the holding member 2 is the same as that of the above-mentioned example. but not limited to. For example, the side wall part 20 and the regulating part 24 may be formed of one member, the supporting part 22 may be formed of a different member from the side wall part 20, or the side wall part 20, the supporting part 22, and the regulating part 24 are different from each other. The side wall portion 20, the support portion 22, and the restriction portion 24 may be formed from one member.

The support part 22 has a first through hole 21 penetrating in the first direction X, and has a substantially U-shape when viewed from the first direction X. The regulating portion 24 has a through hole 23 penetrating in the first direction X, and has a substantially U-shape when viewed from the first direction X. Similarly, the insertion members 3a to 3d have through holes 31a to 31d penetrating in the first direction X, and have a substantially U-shape when viewed from the first direction X. In this embodiment, at least one of the insertion members 3a to 3d includes an elastic member.

As shown in Figures 1 and 4, in this embodiment, an insert member 3a is provided between the support portion 22 and the flange portion 12 in the retaining member 2, and insert members 3b to 3d are provided in a stacked state between the flange portion 12 and the restricting portion 24. The shaft portion 11 passes through the through hole 31a of the insert member 3a and the through hole 21 of the support portion 22, and the locking portion 13 passes through the through holes 31b to 31d of the insert members 3b to 3d and the through hole 23 of the restricting portion 24. In this embodiment, the shaft portion 11 passes through the through hole 21 so as not to come into contact with the support portion 22.

In this embodiment, the insertion members 3a to 3d are inserted into the holding member 2 so that the openings of the through holes 21 and 23 face the third direction Z, and the openings of the through holes 31a to 31d face the second direction Y. is provided. In other words, in this embodiment, the insertion members 3a to 3d are inserted into the holding member 2 so that the through holes 21 and 23 and the through holes 31a to 31d open in different directions when viewed from the first direction X. is provided.

In this embodiment, the support surface 22a of the support portion 22 supports the flange portion 12 in the first direction X via the insertion member 3a. Further, the regulating surface 24a of the regulating section 24 faces the supporting surface 22a in the first direction X so as to sandwich the flange section 12 between the regulating surface 24a and the supporting surface 22a, and Movement in one direction X is restricted. With such a configuration, it is possible to prevent the hanging member 1 from greatly vibrating in the vertical direction.

Further, as described above, in this embodiment, the insertion members 3a to 3d include elastic members, so that the flange portion 12 is allowed to swing in the vertical direction within the holding member 2 to some extent. Thereby, when a horizontal force is applied to the shaft portion 11, the shaft portion 11 can be tilted with respect to the vertical direction (first direction X). As a result, even when a horizontal force is applied to the shaft portion 11, it is possible to suppress generation of high stress in the connecting portion 11a.

In the present embodiment, as described above, the closer the connecting portion 11a is to the flange portion 12, the larger the area of the cross section perpendicular to the first direction X and the larger the expansion rate of the area. By forming the connecting portion 11a in such a shape, it is possible to suppress the occurrence of large stress concentration in the connecting portion 11a.

In addition, in this embodiment, at least one of the insertion members 3a to 3d may be composed of only an elastic member, or at least one of the insertion members 3a to 3d may be composed of an elastic member and another member (for example, metal material). In this embodiment, for example, the insertion member 3a is preferably made of a metal material. Further, it is preferable that at least one of the insertion members 3b to 3d is made of an elastic member. In this case, the other insert members among the insert members 3b to 3d may be made of an elastic member or may be made of a metal material.

Further, in this embodiment, the insertion member 3a is provided between the support portion 22 and the flange portion 12, and the insertion members 3b to 3d are provided between the flange portion 12 and the restriction portion 24. The manner in which the insertion member is installed is not limited to the above example. Specifically, one or more insertion members including an elastic member may be provided between at least one of the flange portion 12 and the support surface 22a and between the flange portion 12 and the restriction surface 24a. Therefore, for example, the flange portion 12 may be directly supported by the support portion 22. In this case, for example, insertion members 3a to 3d are provided between the flange portion 12 and the restriction portion 24. Further, a plurality of insertion members may be provided between the flange portion 12 and the support portion 22, and no insertion member may be provided between the flange portion 12 and the restriction portion 24. Further, in this embodiment, a case has been described in which four insertion members 3a to 3d are provided, but the number of insertion members is not limited to the above example, and may be one, two, or three. The number may be five or more. In addition, when the number of insertion members is one, that one insertion member is comprised only of an elastic member or an elastic member and another member.

Furthermore, in the present embodiment, the through holes 21, 23, and 31a to 31d have a cutout shape with an opening. Either one of the through holes may have a rectangular, circular, or elliptical shape without an opening.

(Other embodiments)
In the above-described embodiment, the connecting portion 11a of the shaft portion 11 is formed so that the closer it is to the flange portion 12, the larger the area of the cross section perpendicular to the first direction X and the larger the expansion rate of the area. The shape of the shaft portion 11 is not limited to the above example. For example, as shown in FIG. 5, the end of the shaft portion 11 on the flange portion 12 side may have a uniform diameter. In this embodiment, as shown in FIG. 5, the flange portion 12 is directly supported by the support surface 22a of the support portion 22, but an insertion member is provided between the flange portion 12 and the support portion 22. It's okay to be hit. When an insertion member is provided between the flange portion 12 and the support portion 22, the insertion member is preferably made of a metal material, but may also include an elastic member.

For example, as shown in FIG. 6, in a predetermined cross section parallel to the first direction X and the second direction Y (in other words, a predetermined cross section perpendicular to the third direction Z (see FIG. 1)) 12 may have an inclined surface 12b that faces the support surface 22a and is supported by the support surface 22a. In this embodiment, the inclined surface 12b moves away from the support surface 22a in the first direction X as it approaches the end 12c of the flange portion 12 in the second direction Y (that is, as it goes to the outside of the flange portion 12). It is formed. In addition, in this embodiment, one or more (two in this embodiment) insertion members 3a and 3b are provided between the flange part 12 and the regulating part 24, and between the flange part 12 and the support part 22, No insertion member is provided. Moreover, in this embodiment, at least one of the insertion members 3a and 3b includes an elastic member.

In this embodiment, since the flange portion 12 has the inclined surface 12b, the shaft portion 11 tends to tilt when a horizontal force is applied to the shaft portion 11. Thereby, it is possible to sufficiently suppress generation of high stress in the connection portion of the shaft portion 11 with the flange portion 12.

In the example shown in FIG. 6, the inclined surface 12b extends linearly in a predetermined cross section parallel to the first direction X and the second direction Y, but as shown in FIG. In a predetermined cross section parallel to the second direction Y, the inclined surface 12b may be curved so as to be convex toward the support surface 22a. Also in this case, the same effect as the hanging device 100 shown in FIG. 6 can be obtained.

When a railway vehicle is traveling, it sways in a direction perpendicular to the direction of travel and the vertical direction, i.e., sideways to the direction of travel. Therefore, when installing a suspension device 100 having the configuration shown in Figures 6 and 7 on a railway vehicle, it is preferable to position the suspension member 1 so that the normal direction (third direction Z: see Figure 1) of the cross section of the suspension member 1 shown in Figures 6 and 7 coincides with the direction of travel of the railway vehicle. By positioning the suspension member 1 in this manner, the suspension member 1 can be smoothly swung left and right when sideways swaying occurs in the railway vehicle. As a result, it is possible to sufficiently suppress the occurrence of high stress in the connection portion of the shaft portion 11 with the flange portion 12.

In addition, in the above-mentioned embodiment, the case where the shaft part 11 has a circular shape in the cross section orthogonal to the first direction It can be done. For example, the shaft portion 11 may have a polygonal shape or an elliptical shape in a cross section perpendicular to the first direction X. Further, the overall configuration of the hanging device can also be modified as appropriate depending on the configuration of the installation target of the hanging device (for example, a truck frame) and the configuration of the support target of the hanging device (for example, a drive device, etc.). For example, the holding member may be configured as part of the installation target. Specifically, the holding member may be a part of the truck frame. Further, for example, an attachment portion for attaching a support object to the lower end of the shaft portion may be further provided. The attachment portion provided at the lower end of the shaft portion can have various shapes depending on the structure to be supported.

According to the present invention, it is possible to suppress the occurrence of high stress at the connection portion between the shaft portion and the flange portion of the hanging member.

1. Hanging member 2. Holding members 3a to 3d. Insert member 11. Shaft portion 11a. Connection part 12. Flange portion 12a. Surface 12b. Slope 12c. End 13. Locking part 20. Side wall part 21. Through hole 22. Support part 22a. Support surface 23. Through hole 24. Regulatory Department 24a. Regulatory aspects 31a-31d. Through hole 100. Hanging device 200. Hanging device 300. Hanging member 310. Shaft part 320. Flange part 400. Holding member 400a. Groove 500. connection part

Claims (6)

a hanging member having a shaft portion extending in a first direction, and a flange portion expanding from the shaft portion in a direction perpendicular to the first direction;
a support surface that supports the flange portion in the first direction; and a support surface that faces the support surface in the first direction so as to sandwich the flange portion between the support surface and the flange portion in the first direction. a holding member having a regulating surface that regulates the movement of the
one or more insertion members provided between the flange part and the support surface and at least one between the flange part and the regulation surface,
The flange portion is supported by the support surface via the insertion member, and further, the flange portion has a predetermined cross section parallel to the first direction and a second direction perpendicular to the first direction. having an inclined surface facing the support surface and supported by the support surface, the closer to the end of the flange portion in the second direction, the further away from the support surface in the first direction;
the one or more insert members include an elastic member;
Hanging device. The elastic member is provided between the flange portion and the regulating surface,
The hanging device according to claim 1. In the predetermined cross section, the inclined surface extends linearly;
The hanging device according to claim 1 or claim 2 . In the predetermined cross section, the inclined surface is curved so as to be convex toward the support surface.
The hanging device according to claim 1 or claim 2 . Equipped with the hanging device according to any one of claims 1 to 4 ,
railway vehicle. configured to proceed in the normal direction of the predetermined cross section;
The railway vehicle according to claim 5 .

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