JPS58224850A - Airtight hood for high-speed car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION a) Description of the Technical Field The present invention relates to an airtight structure for a vehicle connection part of a vehicle such as a superconducting magnetic levitation vehicle that travels on the ground at extremely high speed.

b) Explanation of conventional technology Currently, various prototype vehicles are being considered that are designed to significantly increase the speed of conventional Shinkansen trains, such as superconducting magnetic levitation vehicles. There is a problem: the speed of the Shinkansen.

Even at speeds of around 200 km/h, the so-called ear-stunning phenomenon occurs when a vehicle enters a tunnel, causing pressure waves to travel through the tunnel, and the pressure waves to reflect back at the exit of the tunnel. It is known that when positive pressure becomes negative pressure, it affects the pressure inside the vehicle.

For this reason, all Shinkansen cars have an airtight structure and are designed to prevent passengers from feeling uncomfortable due to pressure fluctuations inside the tunnel.

However, Shinkansen vehicles also have some parts where it is difficult to maintain airtightness, such as the connecting hood, and when traveling in a tunnel, passengers and sales inside the train come and go, and the space between the cabin and the end of the car is opened and closed. , in some cases, atmospheric pressure fluctuations may be transmitted to the inside of the vehicle υ, causing an emergency 4
2) It may lead to an uncomfortable situation.

This is really fast, Wutong train (approximately 500km/h)
), how should the area of the tunnel cross section and car body cross section be calculated?
Although it depends on the type of tunnel, the pressure fluctuation that occurs when entering the tunnel is said to exceed 0.4 q/Cl/l. However, according to aviation medicine, etc., eardrum damage due to atmospheric pressure fluctuations varies slightly from person to person, but in weak people the damage is 0.
It can also occur with 1 and ν, but even for particularly strong people, the limit is 4 times that amount. Considering this, if a pressure fluctuation of 0.4 to -2 were to enter the passenger cabin, there was a risk that all the passengers would have hearing problems.

However, in order to prevent this, it is not possible to prohibit walking on the connecting portion while the vehicle is running, and air pressure fluctuations outside the vehicle inevitably enter the interior of the vehicle.

C) Purpose of the Invention In order to solve this problem, the present invention provides a structure that can maintain airtightness even when pressure fluctuations occur, by making the inter-vehicle body connecting hood structure, which must be constructed with flexibility, That's true.

d) Structure of the invention FIGS. 1, 2, and 3 show an embodiment according to the present invention.

Figure 1 shows a cross-sectional view of a superconducting magnetically levitated vehicle, where l is the vehicle body and 2
is a bogie, and superconducting electromagnets 3 are arranged on both sides of the bogie, and the bogie moves in a propulsion, guide, and levitated manner facing a ground-side propulsion guide coil 4 and a ground-side levitation coil 5. This superconducting magnetically levitated vehicle travels by the running tires 7 and guide tires 8 at low speeds, and is retracted during high speed travels by the levitation wheels. This truck 2 supports the vehicle body 1' via an air spring 6. Here, the end surface of the car body is j
A passageway 9 is provided and the airtight hood 1 of the present invention is installed in the passageway between the vehicle bodies.
0 is the default. Originally, this airtight canopy should be configured in a completely circular shape for pressure resistance characteristics (2 is good, but it is also because the height of the shell passage is high) In this case, the lower part extends to the lower part of the single body end, so in order to cover this, the lower overhanging part 11 of the car body end is provided so that the cross section of this passage can be sufficiently covered. There is.

Figure 2 shows the car body with this connection 1 attached, viewed from the side.
A connecting top 10 is arranged on the end face of the car body, but in this type of high-speed vehicle, a smooth connecting top is placed around the outer periphery of the car body so that the airflow is not disturbed at the connecting part of the car body. Although this is normal, illustration and explanation will be omitted since it has no direct relation to the present invention.

Next (=Figure 3) (To explain in detail, this figure shows a cross section of the airtight hood 10 according to the present invention. IA and IB are car body end plates that are connected to each other, and IC and ID are attached to the inner lining of each car body. Reference numeral 9 indicates the opening of the passageway between the vehicle bodies.This vehicle body end plate (- indicates the washer 13A).

13B is airtight (Ninaru-sama (Nifrange 2OA,
20B, and is kept airtight by an O ring 22 (-).The IOA is constructed by connecting the airtight part of the IOD with the airtight part 10E and IOF, and there is a nylon cord inside. This is an airtight hood rubber bellows made of a type of air spring-like tubes stacked together with reinforcement.The end of this airtight hood rubber bellows IOA is an L-shaped 7 flange 14A reinforced with bead wire or the like. 13A with 14 presser fittings and 15 bolts.

Attached to 13B washer.

The structure of this end is similar to the structure used for general air splash end attachment, and it is possible to maintain complete airtightness.IOB and IOC are airtight hood rubber bellows tube joints. (2) are made of metal or a material that maintains high rigidity (2) to hold the airtight hood rubber bellows in the specified shape (2) by fitting with the protrusion so that it does not shift (2). This hoop is made of two pieces (two oval shapes) that can withstand pressure air force (two oval shapes).The end of this hoop (two oval shapes) is provided with a washer 13A at a position opposite to the communication port 10F. A vent device is placed through the car body end to maintain airtightness (20 ring 17 is provided, and a constant pressure air is supplied to pipe 19 through elbow 18).

e) Operation of the invention The tube portion 10D of the airtight canopy rubber bellows IOA (Secondly, pressure fluctuations within the tunnel (Secondly, high pressure air is supplied from the pressure air source through the pipe 19).

The tube part LOD is circular (= it is about to inflate, and this tensile force is produced on the airtight rubber bellows IOA. This tensile force is resisted by the rubber bellows (two cords such as nylon). is the whole (because it is difficult to maintain the strength here, the outer peripheral part (L 1 (Ic).

It is arranged as an IOB on the inner circumference. It serves two purposes: it maintains its shape as a rubber bellows by receiving the tensile force of this tube section.

Next, the basic shape of the airtight hood rubber bellows IOA modified to serve as a connecting hood between vehicle bodies will be explained. Fourth
The diagram shows the airtight hood rubber bellows IOA and 10B.

It shows the regular appearance of 10C.

Next, FIG. 5 shows the airtight hood rubber bellows lOA with the upper end fixed and the lower part moved in parallel to the right.

In this case, the rubber bellows IOA is 10B.

At point 10C (one of the two contacting parts is rolled up and the other is a claw).Although this rubber bellows has a circular shape, it has a shape similar to that of a rubber mallet pressed down and rolled. Lateral movement can be tolerated. Next, Figure 6 is a plan view showing the overall appearance when the car end end sections IA and 1B are displaced relative to each other in the left and right direction.
-When the displacement is q, the 10C frame is in the upper right corner, especially at the car end gable (the two close airtight hood rubber bellows are deformed with one end with a large radius and the other end with a small radius, so the IOC is tilted) #i(- allows this relative displacement.

For reference, FIG. 7 shows an example in which the car end end portions of IA and IB have a constant angle. In this case, the airtight hood rubber bellows has a large radius on the right side of the figure and a small radius on the left side, allowing this relative displacement. The rigidity varies depending on how the nylon cord is inserted inside the bellows, but due to the shearing direction of the bellows itself, it can be displaced in accordance with all kinds of displacements required for the car end connecting hood. .

Next, the function of the airtight hood rubber bellows IOA of the present invention to block pressure fluctuations in response to pressure fluctuations outside the vehicle will be explained.

First, if we consider the case when the pressure outside the car body becomes negative pressure, pressurized air is introduced into the tube-shaped interior 100, but the rubber bellows IOA is swollen outward from 10C (2). Since this airtight hood rubber base IOA is prevented from being deformed by negative pressure, negative pressure is prevented from entering the inside of the car.Next, the pressure outside the car body is changed from positive pressure Considering what happened when the airtight hood rubber bellows IOA became slightly higher than the pressure outside the car body, the outer rubber bellows river A increases the external pressure of the car body (the pressure difference between the two). As a result, the tensile force acting on the rubber bellows decreases, but the shape does not change.Also, in the direction of the inside of the car, the tensile force on the inner bellow surface of the airtight rubber bellows IOA hardly changes. Since the IOB prevents the deformation, pressure transmission to the inside of the vehicle is prevented.

f) Another embodiment FIG. 8 shows the airtight canopy bellows IOA of the present invention shown in FIG.
[Outer hood], OAB inner hood 10AA, separate into two pieces, and fit the hoops of IOB'IOc' into 13A' and 13B'.
As a result of pressing with washer 14 and metal fitting 14, the effect is exactly the same as in Fig. 3 (it looks like two).

Next, FIG. 9 shows another embodiment of the present invention.
, 18, but the IOC holding fitting 14 is the same as that shown in FIG. However, washer 13AA
, 13BA to 24AA, 24BA and 24AB.

248B is arranged between them (- air splash 25A, 25B
are arranged. In other words, the IOA's airtight hood bellows structure uses air pressure to maintain airtightness (2IA
It is assumed that a slight pressing force will be generated between the car body and the IB car body, causing unnecessary stress on the car body end. Therefore, in the structure shown in Figure 9, when IOA's airtight hood bellows + Z pressure air is applied, the output is 2.5A.

If pressurized air is added to the air splash of 25B at the same time, 25A
.

If the pressure transformation area of the air spring 25B is selected properly, the pressing force from the airtight canopy bellows 10C and the air spring 25A.

25B (it is possible to match the tensile forces generated from the two, and it is possible to prevent pushing or pulling forces from being applied between the vehicle bodies LA and IB.

g) Overall effect As described above, we have created a structure that combines an air spring that applies a force to push out the outside C2 with pressurized air, and an air spring that has the characteristics of an ordinary air spring that receives pressure inward. By combining them, it is possible to create a ring-shaped airtight hood structure between the car bodies that does not deform due to external pressure.For this reason, it is possible to create an airtight car body structure that is flexible and connects the cars together.

[Brief explanation of the drawing]

Figure 1 is a sectional view of the vehicle body of a superconducting magnetically levitated vehicle using the present invention, Figure 2 is a side view of Figure 1, and Figure 3 is 1-11 in Figure 2.
FIGS. 4 and 5 are detailed explanatory views of the main parts of FIG. 3, FIGS. 6 and 7 are also detailed perspective views of the main parts of No. 31g+, and FIG. 8 is a detailed explanatory view of the main parts of FIG. FIG. 9 is a top view of an airtight hood showing another embodiment. l...Car body IA, IB...Car body end plate 9...Connection passage between car bodies 10...Airtight hood 10A
, l0AA, l0AB...Airtight II! ! bellows 10B, IOB', IOC, IOc'...
・But 10D, IOD'...Hollow circular part 10E
...Vent hole (7317) Agent Patent attorney Noriyuki Chika (and 1 other person) Figure 1 Figure 5 Figure 4

Claims (1)

[Claims] In a flexible bellow that is a connecting part between vehicles traveling at high speed, the cross-sectional shape is L-shaped flanges at both ends, and the middle part is a continuous hollow circle.
A connecting part between one of the 7 langes and each hollow circular part (two vent holes are provided and a bell is fitted on the outside of the hollow circular connecting part) forms a perot, and this is connected to the connecting part of the 7 langes (Yoyo υ An airtight hood for high-speed vehicles that supplies pressurized air to the ventilation holes in the flange.