Vibration isolation device mounting structure for railway vehicles, equipment for railway vehicles

Abstract

To provide a vibration isolation device mounting structure for railway vehicles and equipment for railway vehicles that allows for easy replacement of vibration isolation devices. [Solution] The vibration isolation device mounting structure according to the embodiment includes a mounting part such as a mounting base plate 6 that is fixed to the equipment 1 side with a vibration isolation device such as a vibration isolation rubber 5 supported on the railway vehicle 2 side attached, and the mounting part is provided so that the vibration isolation device together with the equipment 1 can be attached and detached.

Description

Technical Field

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[0001] Embodiments of the present invention relate to a mounting structure for a vibration isolation device for a railway vehicle and a device for a railway vehicle.

Background Art

[0002] In recent years, devices mounted, for example, under the floor of a railway vehicle are elastically supported on the railway vehicle side via a vibration isolation device in order to protect the device and prevent the propagation of noise and vibration to the passenger compartment. At this time, vibration isolation rubber is generally adopted as the vibration isolation device, and a mounting portion for mounting the vibration isolation rubber is provided on the device side, and the device is elastically supported by sandwiching the mounting portion with the vibration isolation rubber from above and below (for example, see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, since a vibration isolation device such as vibration isolation rubber is generally considered to deteriorate earlier than the service life of a railway vehicle, replacement work is required every predetermined service life. Further, for example, when the vibration isolation device is damaged, replacement work is required even if the service life has not been reached.

[0005] However, in the conventional structure, even when replacing one vibration isolation device, it is necessary to remove the device once, and after replacing the vibration isolation device, it is necessary to reinstall the device again, so that a great deal of time and cost are required for the replacement work of the vibration isolation device.

[0006] <000003D>Therefore, a mounting structure for a vibration isolation device for a railway vehicle and a device for a railway vehicle that can easily perform the replacement work of the vibration isolation device are provided. [Means for solving the problem]

[0007] The vibration isolation device mounting structure for railway vehicles according to this embodiment includes a mounting portion fixed to the equipment side with the vibration isolation device, which is supported on the railway vehicle side, attached, and the mounting portion is provided so that the vibration isolation device and the mounting portion together can be attached to and detached from the equipment.

[0008] The equipment for railway vehicles according to this embodiment includes a mounting portion fixed to the equipment side with a vibration isolation device supported on the railway vehicle side attached, and the mounting portion is provided so that the vibration isolation device together with the equipment can be attached and detached. [Brief explanation of the drawing]

[0009] [Figure 1] A schematic diagram showing an example of how the equipment is installed according to the embodiment. [Figure 2] A schematic diagram showing an example of the structure of vibration-damping rubber. [Figure 3] This diagram schematically shows an example of the mounting section configuration and attachment / detachment method. [Figure 4] A schematic diagram showing an example of a vibration isolation device mounting structure. [Figure 5] This is a comparative example, illustrating a schematic diagram of a conventional vibration isolation device mounting structure. [Figure 6] A schematic diagram showing how to attach and detach the vibration-damping rubber and mounting parts. [Figure 7] Figure 1 schematically shows an example of the mounting structure of another vibration isolation device. [Figure 8] Figure 2 schematically shows examples of mounting structures for other vibration isolation devices. [Figure 9] Figure 3 schematically shows examples of mounting structures for other vibration isolation devices. [Modes for carrying out the invention]

[0010] The embodiments will now be described with reference to the drawings. As shown in Figure 1, the device 1 is supported on the railway vehicle 2 side by a structure such as a beam 3 which is arranged in the left-right direction under the floor of the railway vehicle 2. Specifically, the device 1 is supported elastically by a mounting plate 6 which is attached to a vibration-damping rubber 5 that is supported from above by support bolts 4, and the mounting plate 6 is fixed to the device 1.

[0011] Furthermore, equipment 1 is connected to other devices, such as control devices (not shown), by means of piping 7 and wiring 8. Examples of equipment 1 include a main transformer, compressor, air conditioning system, main converter, inverter system, generator, traction engine, and power supply unit. Note that the installation configuration of equipment 1 shown in Figure 1 is just one example and is not limited thereto.

[0012] As shown in Figure 2, the vibration-damping rubber 5 is generally formed in a truncated cone shape and comprises an upper part 5a located above the mounting base plate 6 when installed, a lower part 5b located below the mounting base plate 6, and a shaft part 5c connecting the upper part 5a and the lower part 5b. This shaft part 5c is structured to be separable into the upper part 5a side and the lower part 5b side at a separation position 5c1 which is roughly in the vertical center. The shaft part 5c is also formed with a smaller diameter than the upper part 5a and the lower part 5b, and has a groove part 5d on its side for attaching the mounting base plate 6. The vibration-damping rubber 5 also has a support hole part 5e in its center for passing a support bolt 4 through. This vibration-damping rubber 5 is made of rigid material because it supports the heavy equipment 1 with the groove part 5d. Therefore, attaching and detaching the vibration-damping rubber 5 to the mounting base plate 6 is done using, for example, a dedicated jig or device. However, in this embodiment, the vibration-damping rubber 5 has a structure that allows it to be divided into upper and lower parts, making it relatively easy to attach it to the mounting base plate 6. Note that the shape of the vibration-damping rubber 5 is just an example and is not limited to this.

[0013] As shown in Figure 3(a), the mounting base plate 6 is formed in the shape of a flat plate with a predetermined thickness (W). In this embodiment, the mounting base plate 6 is provided with a rubber hole 6a into which the shaft portion 5c of the vibration-damping rubber 5 is inserted, and a fixing hole 6b for passing fixing bolts 9 (see Figure 4) that are fixed to the equipment 1. In this embodiment, the mounting base plate 6 supports the equipment 1 using a mounting base plate 6A with one rubber hole 6a and a mounting base plate 6B with two rubber holes 6a. Hereinafter, when describing matters common to mounting base plate 6A and mounting base plate 6B, they will simply be referred to as mounting base plate 6.

[0014] Each mounting plate 6 is fixed to a mounting bracket 10, which serves as a fixing part provided on the equipment 1, as shown in Figure 3(c). This mounting bracket 10 is formed in a flange shape that extends outward from the upper end of the equipment 1, and has an opening 10a to prevent interference with the vibration-damping rubber 5 and a screw opening 10b for passing fixing bolts 9, corresponding to the mounting position of each mounting plate 6. Note that the configuration of the mounting plate 6 and mounting bracket 10 shown in Figure 3 is just an example and is not limited thereto.

[0015] In this embodiment, as shown in Figure 1, the device 1 is supported by a total of eight vibration-damping rubbers 5, with mounting base plates 6A attached at four locations and mounting base plates 6B attached at two locations. More specifically, as shown in Figure 4, a support bolt 4, which penetrates the beam 3 from above and whose head is supported by the beam 3, is passed through the support hole 5e of the vibration-damping rubber 5, and the lower end of the support bolt 4 is fastened with a retaining plate 11 and a nut 12, thereby supporting the device 1 on the railway vehicle 2 side.

[0016] At this time, the vibration-damping rubber 5 is installed in a state of slight vertical compression such that the distance (L) between it and the beam 3 is shorter than the height of the upper end (L0; see Figure 2) when there is no load. Meanwhile, the mounting base plate 6 is fixed by fastening a fixing bolt 9, which is inserted from below into the fixing hole 6b, with a nut 13 on the upper side of the mounting plate 10, while the groove 5d of the vibration-damping rubber 5 is inserted into the rubber hole 6a and attached to the vibration-damping rubber 5.

[0017] Next, the operation and effects of the above-described configuration will be described. FIG. 5 is a comparative example, schematically showing a conventional mounting structure of a conventional vibration isolator. In the case of the conventional structure, the mounting mode of the vibration isolation rubber 5 is common to this embodiment. The support bolt 4 penetrates the vibration isolation rubber 5 from above the beam 3, and the lower end of the support bolt 4 is fastened by the pressing plate 11 and the nut 12. On the other hand, in the case of the conventional structure, the mounting seat plate 6 is not provided, and a rubber hole 110a is formed in the mounting metal 110, and the vibration isolation rubber 5 is directly attached.

[0018] In such a conventional structure, since the vibration isolation rubber 5 is compressed as described above, and since the vibration isolation rubber 5 is hard, it was very difficult or impossible to replace the vibration isolation rubber 5 even if the nut 12 was removed. Therefore, in the case of the conventional structure, even when replacing one vibration isolation rubber 5, it was necessary to remove the entire device 1 once, and a great deal of time and cost were required for the replacement work of the vibration isolation rubber 5. Also, when the piping 7 and the wiring 8 are connected to the device 1, it is necessary to disconnect them, which has been a factor further increasing the time and cost.

[0019] Therefore, in this embodiment, a mounting structure is adopted in which a mounting seat plate 6 is attached to the vibration isolation rubber 5 supported on both sides of the railway vehicle 2, and the mounting seat plate 6 is detachably fixed to the device 1. By adopting such a mounting structure, as schematically shown by the broken line in FIG. 6(a), by removing the fixing bolt 9 that fixes the mounting seat plate 6 to the mounting metal 10 from below, and removing the nuts that fasten the lower end side of the support bolt 4, it becomes possible to remove the mounting seat plate 6 together with the vibration isolation rubber 5 from the device 1 and the railway vehicle 2 side as shown in FIG. 6(b).

[0020] By removing the vibration-damping rubber 5 and the mounting base plate 6 independently from the railway vehicle 2 and the equipment 1, replacement work such as removing the deteriorated vibration-damping rubber 5 and attaching the new vibration-damping rubber 5 to the mounting base plate 6 can be easily performed. Furthermore, when attaching the vibration-damping rubber 5 and the mounting base plate 6 after replacement, the vibration-damping rubber 5 can be compressed by tightening the support bolts 4 with nuts, and since the mounting base plate 6 contacts the mounting bracket 10 from below, the vertical dimensions of the compressed vibration-damping rubber 5 can also be easily specified.

[0021] Furthermore, since the device 1 is provided with the above-described mounting structure in multiple locations, even if the vibration-damping rubber 5 and mounting base plate 6 are removed in one location, the device 1 will still be supported in other locations. Therefore, the device 1 will not fall, and it will not be necessary to lower or remove the device 1 itself, nor will it be necessary to remove the piping 7 or wiring 8, making it possible to replace the vibration-damping rubber 5.

[0022] According to the embodiments described above, the following effects can be obtained. The vibration isolation device mounting structure according to this embodiment includes a mounting part, such as a mounting base plate 6, which is fixed to the equipment 1 side with a vibration isolation device, such as a vibration isolation rubber 5, supported on the railway vehicle 2 side, attached. The mounting part is provided so that the vibration isolation device and the mounting base plate 6 can be detached from the equipment 1. This makes it possible to remove the vibration isolation rubber 5 and the mounting base plate 6 without removing the equipment 1, making it easy to replace the vibration isolation rubber 5. It also makes it easy to attach the new vibration isolation rubber 5 to the mounting base plate 6. Therefore, the replacement of the vibration isolation device can be easily performed.

[0023] Furthermore, the mounting section is separable from the vibration isolation device. This means that if the vibration isolation rubber 5 deteriorates, only the vibration isolation rubber 5 needs to be replaced, and if the mounting base plate 6 is damaged, only the mounting base plate 6 needs to be replaced, thereby suppressing cost increases.

[0024] Furthermore, multiple mounting points are provided for a single piece of equipment 1. This means that when replacing one vibration isolation device, it is not necessary to remove the equipment 1 itself, as it is supported at other points, nor is it necessary to remove the piping 7 or wiring 8 connected to the equipment 1. Therefore, the time required for replacing vibration isolation devices can be significantly reduced compared to conventional methods.

[0025] Furthermore, the vibration isolation device is supported from above on the railway vehicle 2 side by support bolts 4 that penetrate the structure of the railway vehicle 2, and the mounting portion is elastically supported by being attached to the vibration isolation device, and is also detachably fixed from below to a fixing portion provided on the equipment 1. As a result, the vibration isolation rubber 5 can be compressed by tightening the support bolts 4 with nuts, and since the position of the mounting portion in the vertical direction is defined by the fixing portion, the vibration isolation rubber 5 can be easily returned to the compressed state as designed.

[0026] Furthermore, multiple vibration isolation devices are attached to a single mounting point. This allows the equipment 1 to be attached to the railway vehicle 2 without excessively increasing the number of mounting structures, and also makes it possible to install multiple vibration isolation devices in areas where loads are concentrated, for example, thereby ensuring reliable support for the equipment 1.

[0027] Furthermore, the equipment 1 for the railway vehicle 2 is equipped with a mounting base plate 6 that is fixed to the equipment 1 side with the vibration-damping rubber 5, which is a vibration-damping device supported on the railway vehicle 2 side, attached. The mounting base plate 6, along with the vibration-damping rubber 5, is detachably attached to the equipment 1. This allows for easy replacement of the vibration-damping device, and thus provides the same various effects as described above as with the vibration-damping device mounting structure.

[0028] Furthermore, by making the thickness of the mounting base plate 6 (W; see Figure 6) the same as the thickness of the conventional mounting bracket 110 (W; see Figure 5), as in the embodiment, and making the distance between the beam 3 and the mounting base plate 6 (L; see Figure 6) the same as the distance between the conventional beam 3 and the mounting bracket 110 (L; see Figure 5), the same vibration-damping rubber 5, support bolts 4 and nuts 12 can be used. In other words, the vibration-damping rubber 5, which has already been designed and proven, can be reused.

[0029] By the way, if the distance (L; see Figure 6) between the beam 3 and the mounting base plate 6 is kept the same as in the conventional design, as in the embodiment, the thickness of the mounting bracket 10 (W1; see Figure 6) inevitably becomes thinner. Therefore, for example, as shown in Figure 7, the thickness (W) of the mounting bracket 20 can be kept the same as in the conventional design to form an opening 20a, and a convex mounting base plate 21 that protrudes upward in the opening 20a can be used as the mounting part, and it can be fixed to the mounting bracket 20 with fixing bolts 22.

[0030] With this configuration, the convex mounting base plate 21 can be attached and detached together with the vibration-damping rubber 5, making it easy to replace the vibration-damping rubber 5. Furthermore, by tightening the support bolt 4 with a nut, the vibration-damping rubber 5 can be returned to its designed compressed state, and conventional vibration-damping rubber 5 can be used, thus obtaining various effects similar to those of the above-described embodiment. In addition, multiple vibration-damping rubbers 5 may be provided on a single convex mounting base plate 21, as in the embodiment.

[0031] Furthermore, as shown in Figure 8, the mounting portion can be an L-shaped mounting base plate 30 with an L-shaped cross-section, with support holes 30a provided on the long side of the L-shape for attachment to the vibration-damping rubber 5, and the short side of the L-shape fixed to the equipment 1 with fixing bolts 31. In this case, it is desirable to attach the L-shaped mounting base plate 30 to a sturdy structure such as the frame of the equipment 1.

[0032] With this configuration, the L-shaped mounting base plate 30 can be attached and detached together with the vibration-damping rubber 5, making it easy to replace the vibration-damping rubber 5. Furthermore, by temporarily fixing the L-shaped mounting base plate 30 to the equipment 1 and tightening the support bolts 4 with nuts, the vibration-damping rubber 5 can be returned to its designed compressed state, and conventional vibration-damping rubber 5 can be used, thus obtaining various effects similar to those of the above-described embodiment. In addition, a reinforcing member can be provided between the short and long sides of the L-shape. In addition, multiple vibration-damping rubbers 5 may be provided on a single L-shaped mounting base plate 30, as in the embodiment.

[0033] Furthermore, as shown in Figure 9, an opening 40a can be provided in the mounting bracket 40 of the conventional device 1, and a mounting base plate 41 can be fixed below it with fixing bolts 43. In this case, since the position of the rubber hole 41a is lower than in the conventional design, different vibration-damping rubber 42 and support bolts 43 passed through the support hole 42e will be used, but the device 1 itself can be reused from the conventional design. In addition, multiple vibration-damping rubbers 42 may be provided on a single mounting base plate 41, as in the embodiment.

[0034] In this embodiment, an integrated vibration-damping rubber 5 is shown as an example of a vibration-damping device, but although not shown in the illustration, a vibration-damping device in which the upper and lower parts of the mounting portion can be separated can be used.

[0035] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of symbols]

[0036] In the drawing, 1 represents equipment, 2 represents a railway vehicle, 4 represents a support bolt, 5 represents vibration-damping rubber (vibration isolation device), 6, 6A, and 6B represent mounting base plates (mounting parts), 9 represents a fixing bolt, 10 represents a mounting bracket (fixing part), 20 represents a mounting bracket (fixing part), 21 represents a convex mounting base plate (mounting part), 30 represents an L-shaped mounting base plate (mounting part), 31 represents a fixing bolt, 40 represents a mounting bracket (fixing part), 41 represents a mounting base plate (mounting part), 42 represents vibration-damping rubber (vibration isolation device), and 43 represents a support bolt.

Claims

1. It has a mounting part that is fixed to the equipment side with a vibration isolation device that is supported on the railway vehicle side attached, The mounting portion is a vibration damping device mounting structure for railway vehicles, which is provided so as to be detachable from the equipment together with the vibration damping device.

2. The mounting portion is separable from the vibration damping device, as described in claim 1, for a vibration damping device mounting structure for a railway vehicle.

3. The mounting structure for a vibration damping device for a railway vehicle according to claim 1, wherein a plurality of mounting portions are provided for one of the devices.

4. The vibration damping device mounting structure for a railway vehicle according to claim 1, wherein a plurality of vibration damping devices are attached to one mounting portion.

5. The vibration isolation device is supported from above on the railway vehicle side by support bolts that penetrate the structure on the railway vehicle side. The mounting portion is elastically supported by being attached to the vibration damping device and is detachably fixed from below to a fixing portion provided on the equipment, as described in any one of claims 1 to 4.

6. It has a mounting part that is fixed to the equipment side with a vibration isolation device supported on the railway vehicle side attached, The mounting portion is a railway vehicle device that can be attached to and detached from the equipment together with the vibration isolation device.

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