JP2007139444A - Device and method for testing vehicle passing through tunnel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for testing a vehicle passing through a tunnel capable of performing simulation of tunnel-passing by using a launching means provided with a pair of rotary role. <P>SOLUTION: The device 1 includes: a simulation tunnel 2; a launching means 3 provided with a pair of rolling roll 4 in front of the simulated tunnel 2; a guidance means 5 existing to the exit of the simulated tunnel 2 from the launching means 3; a base 7 to be launched from the launching means 3 by the rotation of the rolling rolls 4 formed as a body of rotation; and a simulated vehicle 6 having 3-D shape running through the simulated tunnel 2 guided by the guidance means 5 accelerated by the base 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tunnel traveling experiment apparatus and a tunnel traveling experiment method, and more particularly to a tunnel traveling experimental apparatus and a tunnel traveling experimental method for experimentally verifying a phenomenon that occurs when a railway vehicle passes through a tunnel using a simulated vehicle. .

  Generally, when a train enters a tunnel, a compression wave and an expansion wave are generated. When this compression wave or expansion wave propagates through the tunnel and reaches the other side of the tunnel, a pulsating pressure wave (micro-pressure wave) approximately proportional to the pressure gradient in front of this compression wave or expansion wave is generated from the tunnel to the outside. Radiated.

  The radiation of this micro-pressure wave not only causes a bursting air pressure sound (primary sound), but also causes a secondary sound by suddenly moving the window glass and doors of the house near the entrance, Prevention of such suppression is important. As specific measures to reduce micro-pressure waves, measures such as lengthening the train head shape and installing a hood at the tunnel entrance have been taken. It is extremely desirable to measure the micro-pressure wave by conducting a tunnel running simulation experiment.

  In recent years, trains have become even faster (300 km / h or more), and in addition to the above-mentioned micro-pressure waves, this has occurred due to the interaction between the tunnel and train when entering and exiting the tunnel, which was not a problem in the past. The low-frequency tunnel entry and exit waves are likely to cause the same problems as micro-pressure waves. In order to solve these problems, tunnel running experiments have been conducted in the past to examine the various phenomena described above at the laboratory level. Note that tunnel entry, exit, and micro-pressure waves are collectively referred to as low-frequency sound.

  As a conventional tunnel running experiment device, for example, as disclosed in Patent Document 1, a simulated vehicle is launched by a three-stage launching means in which a pair of rotating rolls are arranged in series, and a simulated tunnel 2 is formed by a piano wire. There is known a tunnel running experiment device that guides and passes through a tunnel.

According to such a tunnel running test apparatus, by making the cross-sectional area ratio of the simulated tunnel and the simulated vehicle similar to the real thing, a compression waveform in the tunnel similar to the real thing can be obtained in a time-compressed form. The wave phenomenon can be analyzed to examine these reduction measures.
JP 2001-165821 A

  However, in the tunnel traveling test apparatus described in Patent Document 1, the simulated vehicle launching means is constituted by a pair of rotating rolls, and therefore the simulated vehicle needs to have an axial target (rotating body) shape.

  On the other hand, in a vehicle, the flow of air in the vicinity of the vehicle, for example, the train wind in the tunnel when the vehicle approaches, or the pressure wave near the wellhead at the moment when the vehicle enters the tunnel, The effect is noticeable. Therefore, it has been difficult to accurately grasp the aerodynamic phenomenon in the vicinity of the train only by performing an experiment using a simulated vehicle having an axisymmetric shape.

  In addition, the vehicle may have a protrusion such as an aerodynamic brake, or the intermediate vehicle may have a two-story structure. In an experiment using a simulated vehicle as an axisymmetric rotating body, a phenomenon such as a micro-pressure wave is accurately detected. Sometimes it was difficult to figure out.

  The present invention has been made in view of the above circumstances, and in a tunnel traveling experiment apparatus provided with a pair of rotating rolls as launching means, a tunnel traveling simulation experiment on a vehicle having a three-dimensional shape other than an axisymmetric rotating body. The present invention relates to a tunnel traveling experiment apparatus and a tunnel traveling experiment method that can accurately perform the above.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a tunnel traveling test apparatus, comprising a simulated tunnel, a launching means provided in front of the simulated tunnel and having a pair of rotating rolls, and the launching means. Guide means extending to the tip of the simulated tunnel, a base formed as an axisymmetric rotating body and launched from the launching means by rotation of the rotary roll, and has a three-dimensional shape and is accelerated by the base. And a simulated vehicle guided by the guiding means and passing through the simulated tunnel.

  According to the first aspect of the invention, since the base is an axisymmetric rotating body, the base can be fired from a pair of rotating rolls provided in the launching means. And since the simulation vehicle is accelerated by the base launched from the launching means and the simulation vehicle passes through the simulation tunnel, there is no need to launch the simulation vehicle from a pair of rotating rolls, and the simulation vehicle can be in any three-dimensional shape. It becomes possible. As a result, an aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel is detected by passing the simulated tunnel through the simulated tunnel having the same three-dimensional shape as the vehicle and detecting the pressure wave generated when the vehicle enters the simulated tunnel. For example, it becomes possible to accurately grasp the train wind in the tunnel when the vehicle approaches, the pressure wave near the wellhead at the moment when the vehicle enters the tunnel, and the like.

  A second aspect of the present invention is the tunnel traveling test apparatus according to the first aspect, wherein the simulated vehicle is formed integrally with the base.

  According to the invention described in claim 2, it is possible to accelerate the simulated vehicle and the base by firing the base formed integrally with the simulated vehicle from the pair of rotating rolls provided in the launching means. Further, by making the simulated vehicle have the same three-dimensional shape as the head portion of the vehicle, it is possible to grasp the phenomenon of low frequency sound in the vicinity of the vehicle when the vehicle enters the tunnel.

  A third aspect of the present invention is the tunnel traveling test apparatus according to the first aspect, wherein the simulated vehicle is formed so as to be separable from the base, and the base is placed in front of the simulated tunnel. And braking means for separating and stopping.

  According to the third aspect of the present invention, the simulated vehicle and the base can be accelerated by firing the base that is separably coupled to the simulated vehicle from the pair of rotating rolls provided in the launching means. In addition, since only the simulated vehicle passes through the simulated tunnel separately from the base, the simulated vehicle has the same three-dimensional shape as the entire knitting so that when the vehicle enters the tunnel or the vehicle passes through the tunnel. It is possible to grasp the aerodynamic phenomenon in the vicinity of the vehicle when

  According to a fourth aspect of the present invention, there is provided the tunnel running test apparatus according to the first aspect, wherein the simulation vehicle is installed between the launching means and the simulated tunnel, and the base collides from the launching means. The vehicle passes through the simulated tunnel.

  According to the fourth aspect of the present invention, the simulated vehicle can be accelerated by the collision of the base launched from the launching means and can pass through the simulated tunnel. Further, by making the simulated vehicle have the same three-dimensional shape as the entire knitting, it becomes possible to grasp the aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel or when the vehicle passes through the tunnel. Further, by adopting a configuration in which the base is caused to collide with the simulation vehicle, it is not necessary to configure the base so that the cross-sectional area of the base is larger than the cross-sectional area of the simulation vehicle, and the degree of freedom in design is increased.

  The invention according to claim 5 is a tunnel running experiment method of launching a simulated vehicle and passing through the simulated tunnel, using a launching means installed in front of the simulated tunnel and provided with a pair of rotating rolls, and is axially symmetric A base formed as a rotating body is fired by the rotation of the rotary roll, and a simulated vehicle having a three-dimensional shape is accelerated by the base to pass through a simulated tunnel.

  According to the fifth aspect of the present invention, the base can be fired from the pair of rotating rolls provided in the launching means. And since the simulation vehicle is accelerated by the base launched from the launching means and the simulation vehicle passes through the simulation tunnel, there is no need to launch the simulation vehicle from a pair of rotating rolls, and the simulation vehicle can be in any three-dimensional shape. It becomes possible. As a result, an aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel is detected by passing the simulated tunnel through the simulated tunnel having the same three-dimensional shape as the vehicle and detecting the pressure wave generated when the vehicle enters the simulated tunnel. For example, it becomes possible to accurately grasp the train wind in the tunnel when the vehicle approaches, the pressure wave near the wellhead at the moment when the vehicle enters the tunnel, and the like.

  A sixth aspect of the present invention is the tunnel traveling test method according to the fifth aspect, wherein the simulated vehicle is formed integrally with the base.

  According to the sixth aspect of the present invention, the simulated vehicle and the base can be accelerated by firing the base formed integrally with the simulated vehicle from the pair of rotating rolls provided in the launching means. In addition, by making the simulated vehicle have the same three-dimensional shape as the head portion of the vehicle, it is possible to grasp low-frequency sound in the vicinity of the vehicle when the vehicle enters the tunnel.

  The invention according to claim 7 is the tunnel running test method according to claim 5, wherein the simulation vehicle is formed so as to be separable from the base, and the simulation vehicle is placed in front of the simulation tunnel. And the vehicle is allowed to pass through the simulated tunnel.

  According to the seventh aspect of the present invention, it is possible to accelerate the simulated vehicle and the base by firing the base detachably coupled to the simulated vehicle from the pair of rotating rolls provided in the launching means. In addition, since only the simulated vehicle passes through the simulated tunnel separately from the base, the simulated vehicle has the same three-dimensional shape as the entire knitting so that when the vehicle enters the tunnel or the vehicle passes through the tunnel. It becomes possible to grasp an aerodynamic phenomenon or the like in the vicinity of the vehicle when performing the operation.

  The invention according to claim 8 is the tunnel traveling experiment method according to claim 5, wherein the simulated vehicle is installed between the launching means and the simulated tunnel, and the base is launched by the launching means. The simulation vehicle is accelerated to pass through the simulation tunnel.

  According to the eighth aspect of the present invention, the simulated vehicle can be accelerated by the collision of the base launched from the launching means and can pass through the simulated tunnel. Further, by making the simulated vehicle have the same three-dimensional shape as the entire knitting, it becomes possible to grasp an aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel or when the vehicle passes through the tunnel. Further, by adopting a configuration in which the base is caused to collide with the simulation vehicle, it is not necessary to configure the base so that the cross-sectional area of the base is larger than the cross-sectional area of the simulation vehicle, and the degree of freedom in design is increased.

  According to the first and fifth aspects of the present invention, it is possible to perform a tunnel running experiment under the specific physical conditions required by making the simulated vehicle have an arbitrary three-dimensional shape.

  According to the second and sixth aspects of the invention, the aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel, for example, the train wind in the tunnel when the vehicle approaches, or the vehicle enters the tunnel It is possible to accurately grasp the pressure wave near the pit of the moment.

  According to the inventions of claim 3 and claim 7, when the vehicle enters the simulated tunnel or grasps the aerodynamic phenomenon in the vicinity of the vehicle when passing through the simulated tunnel, It is possible to accurately grasp pressure fluctuations.

  According to the fourth and eighth aspects of the invention, the same effects as those of the third and seventh aspects can be obtained, and a simulated vehicle can be configured to be larger than the base. The degree of freedom is increased.

[First Embodiment]
Hereinafter, a tunnel traveling test apparatus 1 according to the first embodiment of the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the tunnel traveling experiment apparatus 1 includes a simulated tunnel 2. As the simulated tunnel 2, a known simulated tunnel used in a tunnel traveling experiment device can be used.

  In addition, a launching means 3 is provided in front of the simulated tunnel 2. As shown in FIG. 1, the firing means 3 has a three-stage configuration in which a pair of rotating rolls 4 in which two rotating rolls 4 are arranged vertically are arranged in series. In addition, a motor (not shown) as a rotating means is directly connected to each of the rotating rolls 4 so that the rotation can be sequentially accelerated from the rotating roll 4 far from the simulated tunnel 2 to the rotating roll 4 closer to the simulated tunnel 2. It has become.

  Here, the rotary roll 4 of this embodiment is a metal rotary roll having a diameter of about 50 to 100 cm, and a rubber material (not shown) is attached to the roll surface. In addition, at least one of the pair of rotating rolls 4 can move up and down together with the motor, and the distance between the pair of rotating rolls 4 can be adjusted according to the diameter of the base 7. ing.

  The tunnel traveling experiment apparatus 1 is also provided with guide means 5 that passes between the pair of rotating rolls 4 provided in the launching means 3 and inside the simulated tunnel 2. The guide means 5 of this embodiment is composed of a piano wire, and is held in a state where tension is applied from the launch means 3 to the simulated tunnel 2 by a tension device (not shown).

  The guide means 5 is provided with a simulated vehicle 6 and a base 7 formed integrally with the simulated vehicle 6.

  The simulated vehicle 6 is formed as a three-dimensional shape similar to the shape of the head portion of the vehicle. Here, the three-dimensional shape means, for example, a streamlined head shape such as a Shinkansen, a shape of a vehicle having a protrusion such as an aerodynamic brake, or a shape of a two-story vehicle. The simulated vehicle 6 is formed so that the cross-sectional diameter is smaller than that of the base 7. Further, an insertion hole (not shown) for inserting the guide means 5 is formed in the central portion of the simulation vehicle 6.

  The base 7 is an axisymmetric rotating body and is formed integrally with the simulation vehicle 6. Thereby, the simulation vehicle 6 and the base 7 are accelerated by inserting the simulation vehicle 6 and the base 7 from the insertion port (not shown) of the launching unit 3 and firing the base 7 from the pair of rotating rolls 4. It is possible to make it. Further, an insertion hole (not shown) for inserting the guide means 5 is formed at the center portion of the base 7 so as to be connected to the insertion hole of the simulation vehicle 6.

  A braking means 8 for stopping the simulation vehicle 6 is provided on the extension of the guide means 5 and on the opposite side of the launching means 3 across the simulation tunnel 2. As the braking means 8, a known braking means used in a tunnel traveling experiment apparatus can be used.

  The simulated tunnel 2 has a built-in pressure sensor 9. Furthermore, a known speed sensor 10 is provided near the entrance of the simulated tunnel 2, and a microphone 11 (low frequency vibration detecting means) is provided near the entrance and exit of the simulated tunnel 2.

  Further, a sound insulation means 12 constituted by a sound insulation sheet is provided between the launch means 3 and the microphone 11. In addition, a sound absorbing means 13 made of a sound absorbing material is provided around each of the above-described components included in the tunnel traveling experiment apparatus 1 so as to substantially cover the launching means 3 and the simulated tunnel 2.

  With the configuration as described above, in the tunnel traveling experiment apparatus 1, the simulated tunnel 2 is caused to pass through the simulated vehicle 6 by firing the base 7 from the pair of rotating rolls 4 included in the launching unit 3. Then, the pressure sensor 9 measures a pressure wave such as a micro pressure wave phenomenon generated when the simulated vehicle 6 enters the simulated tunnel 2, and the microphone 11 enters and exits the simulated tunnel 2 at the entrance of the simulated tunnel 2. The micro pressure wave generated at the exit 2 is measured, and the speed of the simulated vehicle 6 is measured by the speed sensor 10.

  Next, the tunnel running experiment method of the present invention using the tunnel running experiment apparatus 1 according to the present embodiment will be described.

  First, the guide means 5 is inserted into an insertion hole (not shown) formed in the simulated vehicle 6 and the base 7, and the base 7 is fired from a pair of rotating rolls 4 provided in the firing means 3. At this time, the distance between the pair of rotating rolls 4 is adjusted according to the diameter of the base 7.

  Next, when the pair of rotating rolls 4 are sequentially accelerated from the far side to the near side of the simulated tunnel 2, the simulated vehicle 6 and the base 7 are launched by the launching means 3, and the simulated vehicle 6 enters the simulated tunnel 2.

  When the simulated vehicle 6 enters the simulated tunnel 2, the speed sensor 10 measures the speed of the simulated vehicle 6 in the vicinity of the entrance of the simulated tunnel 2, and the microphone 11 measures the rush wave and the exit wave generated at the entrance of the simulated tunnel 2. . The pressure sensor 9 measures a compression wave and an expansion wave generated in the simulated tunnel 2. Further, the microphone 11 measures a micro-pressure wave generated at the exit of the simulated tunnel 2.

  Subsequently, the braking means 8 stops the simulated vehicle 6 that has passed through the simulated tunnel 2.

  As described above, according to the tunnel traveling experiment apparatus 1 and the tunnel traveling experiment method of the present embodiment, since the base 7 is an axisymmetric rotating body, the base 7 is fired from the pair of rotating rolls 4 provided in the launching means 3. It becomes possible to do. And since the simulation vehicle 6 is accelerated by the base 7 launched from the launching means 3 and the simulation vehicle 6 passes through the simulation tunnel 2, it is not necessary to fire the simulation vehicle 6 from the pair of rotating rolls 4. It becomes possible to make the vehicle 6 into an arbitrary three-dimensional shape. As a result, the simulated vehicle 6 having the same three-dimensional shape as the vehicle passes through the simulated tunnel 2 and detects a pressure wave such as a micro-pressure wave phenomenon that occurs when the simulated tunnel 2 enters the tunnel. It is possible to accurately grasp the aerodynamic phenomenon in the vicinity of the vehicle when entering, for example, the train wind in the tunnel when the vehicle approaches, the pressure wave near the wellhead at the moment when the vehicle enters the tunnel .

  Further, by making the simulated vehicle 6 have the same three-dimensional shape as the head portion of the vehicle, it is possible to grasp the phenomenon of low frequency sound in the vicinity of the vehicle when the vehicle enters the tunnel.

  Note that the configuration of the tunnel traveling test apparatus 1 is not limited to this embodiment, and can be arbitrarily modified without departing from the spirit of the invention. For example, the number of the microphones 11 can be increased, and the three-dimensional spread of micro pressure waves and rush waves can be grasped with higher accuracy. In addition, by changing the cross-sectional shape, providing a branching section, or providing an equipment hole in the middle of the simulated tunnel 2, it is also possible to measure and examine the effects of these on various phenomena when the vehicle passes through the tunnel. Is possible.

[Second Embodiment]
Next, a tunnel traveling test apparatus 1 according to the second embodiment of the present embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the description is abbreviate | omitted.

  The simulated vehicle 6 of the present embodiment is formed as a three-dimensional shape similar to the shape of the entire vehicle, and a convex portion 14 is formed on the rear end surface of the simulated vehicle 6.

  In addition, a recess 15 is formed on the front end surface of the base 7 so as to be fitted to the convex portion 14. By fitting the convex portion 14 and the concave portion 15, the simulated vehicle 6 and the base 7 are separated from each other. Combined for easy separation. In addition, the shape of the convex part 14 and the recessed part 15 is not restricted to this, If it can couple | bond so that the simulation vehicle 6 and the base 7 can be easily isolate | separated by fitting, it can also be set as another shape. With such a configuration, the simulation vehicle 6 can be accelerated by firing the base 7 from the pair of rotating rolls 4 included in the launching unit 3.

  In the present embodiment, as shown in FIG. 2, the braking means 16 is provided between the launching means 3 and the simulated tunnel 2. The braking means 16 is formed with a vehicle passage hole 17 having a diameter larger than the cross-sectional area of the simulated vehicle 6 and smaller than the cross-sectional area of the base 7, and the base 7 is imitated before the simulated tunnel 2. 6 is stopped separately. As a result, as shown in FIG. 4, only the simulated vehicle 6 enters the simulated tunnel 2.

  Next, the tunnel running experiment method of the present invention using the tunnel running experiment apparatus 1 according to the present embodiment will be described.

  First, the simulated vehicle 6 and the base 7 are coupled by fitting the convex portion 14 of the simulated vehicle 6 into the concave portion 15 of the base 7.

  Subsequently, when the base 7 combined with the simulated vehicle 6 is fired from the pair of rotating rolls 4 included in the launching unit 3, the simulated vehicle 6 and the base 7 are accelerated.

  Subsequently, when the simulated vehicle 6 and the base 7 are guided to the braking means 16 by the guide means 5, the braking means 16 separates the base 7 from the simulated vehicle 6 before the simulated tunnel 2 as shown in FIG. And stop. As a result, only the simulated vehicle 6 enters the simulated tunnel 2 as shown in FIG.

  As described above, according to the tunnel traveling experiment apparatus 1 and the tunnel traveling experiment method of the present embodiment, the base 7 that is detachably coupled to the simulated vehicle 6 is fired from the pair of rotating rolls 4, and the simulated vehicle 6 and the base 7. Can be accelerated. In addition, since only the simulated vehicle 6 is allowed to pass through the simulated tunnel 2 separately from the base 7, the simulated vehicle 6 is formed in the same three-dimensional shape as the entire knitting so that when the vehicle enters the tunnel or when the vehicle It is possible to grasp an aerodynamic phenomenon in the vicinity of the vehicle when passing through the tunnel.

[Third Embodiment]
Next, a tunnel traveling test apparatus 1 according to a third embodiment of the present embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component similar to the said embodiment, and the description is abbreviate | omitted.

  The simulation vehicle 6 is formed as a three-dimensional shape similar to the shape of the entire knitting, as in the second embodiment. Moreover, the simulation vehicle 6 of this embodiment is installed in the guide means 5 between the launching means 3 and the simulation tunnel 2 as shown in FIG.

  Further, the front end surface of the base 7 is configured to be able to accelerate the simulated vehicle 6 by colliding with the rear end surface of the simulated vehicle 6. For example, the front end surface of the base 7 can be covered with rubber or the like. 5 to 7, the diameter of the cross-sectional area of the base 7 is larger than that of the simulated vehicle 6. However, in this embodiment, the diameter of the cross-sectional area of the simulated vehicle 6 is larger than that of the base 7. It is also possible to configure.

  Further, a string (not shown) is attached to the rear end surface of the base 7 as a braking means, and the base 7 is stopped before the simulated tunnel 2. As a result, only the simulated vehicle 6 passes through the simulated tunnel 2.

  The guiding means 5 guides the base 7 launched from the launching means 3 to the simulated vehicle 6 and guides the simulated vehicle 6 accelerated by the collision of the base 7 to the simulated tunnel 2. .

  Next, the tunnel running experiment method of the present invention using the tunnel running experiment apparatus 1 according to the present embodiment will be described.

  First, the simulated vehicle 6 is installed in the guiding means 5 between the launching means 3 and the simulated tunnel 2.

  Further, the base 7 is launched from a pair of rotating rolls 4 provided in the launching means 3.

  Subsequently, when the base 7 is guided to the simulation vehicle 6 by the guide means 5, the front end surface of the base 7 collides with the rear end surface of the simulation vehicle 6 as shown in FIG. Thus, the simulation vehicle 6 accelerates in the direction of the simulation tunnel 2 and enters the simulation tunnel 2.

  As described above, according to the tunnel traveling experiment apparatus 1 and the tunnel traveling experiment method of the present embodiment, the simulated vehicle 6 can be accelerated by the collision of the base 7 launched from the launching means 3 and can pass through the simulated tunnel 2. Further, by making the simulated vehicle 6 have the same three-dimensional shape as the entire vehicle, it becomes possible to grasp an aerodynamic phenomenon in the vicinity of the vehicle when the vehicle enters the tunnel or when the vehicle passes through the tunnel. . Furthermore, by making the base 7 collide with the simulation vehicle 6, it is not necessary to make the cross-sectional area of the base 7 larger than the cross-sectional area of the simulation vehicle 6, and the degree of design freedom is increased.

  As described above in detail, according to the tunnel traveling experiment apparatus and the tunnel traveling experiment method of the present invention, in the tunnel traveling experimental apparatus provided with a pair of rotating rolls as launching means, the three-dimensional shape other than the axially symmetric rotating body It is possible to accurately perform a tunnel running simulation experiment on a vehicle having

It is the schematic explaining the structure of the tunnel running experiment apparatus which concerns on 1st Embodiment. It is a side view which shows the simulation vehicle and launching means which concern on 2nd Embodiment. It is a side view explaining the function of the braking means which concerns on 2nd Embodiment. It is another side view explaining the function of the braking means concerning a 2nd embodiment. It is a side view which shows the simulation vehicle and launching means which concern on 3rd Embodiment. It is a side view which shows a mode that a collision part collides with the vehicle part which concerns on 3rd Embodiment. It is a side view which shows a mode that the vehicle part which concerns on 3rd Embodiment accelerates by a collision.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tunnel running test apparatus 2 Simulated tunnel 3 Launching means 4 Rotating roll 5 Guide means 6 Simulated vehicle 7 Base 8 Braking means 9 Pressure sensor 10 Speed sensor 11 Microphone 12 Sound insulation means 13 Sound absorbing means 14 Convex part 15 Concave part 16 Braking means 17 Vehicle Passage hole

Claims (8)

  A simulated tunnel, a launching means installed in front of the simulated tunnel and provided with a pair of rotating rolls, a guide means extending from the launching means to the tip of the simulated tunnel, and the rotating roll formed as an axisymmetric rotating body And a simulated vehicle that has a three-dimensional shape and is accelerated by the base and guided by the guiding means and passes through the simulated tunnel. Tunnel running experiment device.   The tunnel running test apparatus according to claim 1, wherein the simulated vehicle is formed integrally with the base.   2. The tunnel according to claim 1, wherein the simulated vehicle is formed so as to be separable from the base and includes braking means for stopping the base separately from the simulated vehicle before the simulated tunnel. Driving experiment device.   2. The simulated vehicle according to claim 1, wherein the simulated vehicle is installed between the launching means and the simulated tunnel, and passes through the simulated tunnel due to a collision of the base fired from the launching means. Tunnel running experiment device.   A tunnel running experiment method of launching a simulated vehicle and passing through a simulated tunnel, wherein a launching means provided with a pair of rotating rolls installed in front of the simulated tunnel is used and formed as an axisymmetric rotating body A tunnel running experiment method characterized in that a base is launched by rotation of the rotary roll, and a simulated vehicle having a three-dimensional shape is accelerated by the base and passed through a simulated tunnel.   The tunnel running experiment method according to claim 5, wherein the simulated vehicle is formed integrally with the base.   The simulated vehicle is configured to be separable from the base, and the base is separated from the simulated vehicle before the simulated tunnel and stopped so that the simulated vehicle passes through the simulated tunnel. The tunnel running experiment method according to claim 5.   The simulated vehicle is installed between the launching means and the simulated tunnel, and the simulated vehicle is accelerated by the collision of the base fired by the launching means to pass through the simulated tunnel. 5. The tunnel running test method according to 5.

Images