JP2005053394A - Dual-mode vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce damage imparted to a road surface during road traveling and to realize track traveling at high speed, in a dual-mode vehicle enabling both ways of traveling. <P>SOLUTION: This vehicle 1 is provided with front and rear rubber tires 3 and 4 provided on front and rear sides of a vehicle body 2 via axles, rubber (or synthetic resin) driving wheels 5 for the track traveling provided on the same axial center as the rear rubber tires 4, and elevatable front and rear guide wheels 6 and 7 for the track traveling provided on the front and rear sides of the vehicle body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dual mode vehicle.

  Currently, with the concentration of population in urban areas, depopulation in rural mountain villages is progressing, and this depopulation has led to a decrease in users of local railway lines (so-called local lines) and local route buses. For this reason, railway operators and bus operators are required to create new transportation systems to replace local railway lines and local route buses in order to reduce operation management costs and the like.

  Under these circumstances, in recent years, a transportation system (hereinafter referred to as “dual mode transportation system”) that takes advantage of both trains and buses by making the railway and roads seamless has been built to reduce vehicle costs. There is a movement to reduce maintenance costs and operating costs. In order to construct this dual mode traffic system, development of a vehicle capable of both track running and road running (hereinafter referred to as “dual mode vehicle”) is underway.

Here, as a conventional vehicle that can travel both on the track and on the road, there is a “railway vehicle” for the purpose of track inspection and the like. The track-and-rail vehicle is normally configured on the basis of a truck vehicle that travels on a road, and includes both an iron wheel for track travel and a tire for road travel. Then, while traveling on a track, the steel wheel is lowered and placed on the rail of the track, while when traveling on a road, the steel wheel is raised and stored above the tire for traveling on the road (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-209087 (first page, FIG. 2)

  However, when the iron wheels for track running of track-and-rail vehicles are directly adopted as wheels for track running of dual-mode vehicles, there are the following problems. In other words, if the storage position of the railway wheel is low, or if this wheel is lowered for some reason, the iron wheel and the road surface come into contact with each other while the dual mode vehicle is traveling on the road, causing damage to the road surface. May end up. In addition, since the frictional force between the railway wheel and the rail of the track is small, there is a problem that it is difficult to run the track at high speed.

  An object of the present invention is to reduce damage to a road surface during road traveling and realize track traveling at high speed in a dual mode vehicle capable of both road traveling and track traveling.

In order to solve the above problems, the invention according to claim 1 is a dual mode vehicle,
Front and rear rubber tires for road driving provided on the front and rear of the vehicle body via axles;
A rubber drive wheel for running on a track provided on the same axis as the rear rubber tire;
Front and rear guide wheels for trajectory traveling up and down provided on the front and rear of the vehicle body,
It is characterized by providing.

The invention according to claim 2 is a dual mode vehicle,
Front and rear rubber tires for road driving provided on the front and rear of the vehicle body via axles;
Synthetic resin drive wheels for running on a track provided on the same axis as the rear rubber tire,
Front and rear guide wheels for trajectory traveling up and down provided on the front and rear of the vehicle body,
It is characterized by providing.

  According to the invention described in claim 1 or 2, road traveling can be performed by the front and rear rubber tires for road traveling provided on the front and rear of the vehicle body via the axle. Further, the track travel is performed by a rubber drive wheel or a synthetic resin drive wheel for track travel provided on the same axis as the rear rubber tire, and a front and rear guide wheel for track travel provided at the front and rear of the vehicle body. be able to.

  The rubber driving wheels or synthetic resin driving wheels for track running are softer than the steel wheels, so even if the driving wheels contact the road surface during road driving, the road surface will be damaged. There are few things. In addition, the rubber drive wheel or the synthetic resin drive wheel for running on the track is slightly deformed and closely adhered to the rail of the track, so that the frictional force between the drive wheel and the rail increases. It is possible to realize track traveling at high speed.

  According to the invention described in claim 1 or 2, road traveling can be performed by the front and rear rubber tires for road traveling provided on the front and rear of the vehicle body via the axle. Further, the track travel is performed by a rubber drive wheel or a synthetic resin drive wheel for track travel provided on the same axis as the rear rubber tire, and a front and rear guide wheel for track travel provided at the front and rear of the vehicle body. be able to.

  And, the rubber drive wheels or synthetic resin drive wheels for track running are softer than the steel wheels, so even if the drive wheels contact the road surface during road running, the road surface will be damaged. There are few things. In addition, the rubber drive wheels or synthetic resin drive wheels for running on the track are slightly deformed according to the rails of the track and are in close contact with the rails, so the frictional force between the drive wheels and the rails increases, It is possible to realize track traveling at high speed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, the configuration of the dual mode vehicle 1 according to the present embodiment will be described with reference to FIGS. The dual-mode vehicle 1 can be realized by freely switching between road traveling by the front and rear rubber tires 3 and 4 and track traveling by the track traveling wheels (the drive wheel 5, the front guide wheel 6 and the rear guide wheel 7). It is a vehicle that can.

  As shown in FIGS. 1 to 3, the dual-mode vehicle 1 rotates around a front rubber tire 3 and a rear rubber tire 4 that rotate around an axle provided at the front and rear of the vehicle body 2, and an axle 4 a of the rear rubber tire 4. The driving wheel 5 for track travel, the front guide wheel 6 and the rear guide wheel 7 for track travel which are provided at the front and rear of the vehicle body 2 and can be raised and lowered, and are provided to be able to project and retract at the front and rear of the vehicle body 2. The front guide roller 8 and the rear guide roller 9 are provided.

  The vehicle body 2 has a structure for carrying a plurality of passengers. In the present embodiment, a microbus body 2 is employed, and about 30 people including the driver can be boarded.

  The front rubber tire 3 is supported by a pair of left and right axles on a front axle (not shown) provided on the chassis 2a of the vehicle body 2 via a suspension device 2b. The direction of the front rubber tire 3 can be changed by the steering device 3a connected to the handle of the driver's seat of the vehicle body 2.

  The rear rubber tire 4 is supported by a pair of left and right axles on a rear axle 4a provided on a chassis 2a of a vehicle body 2 via a suspension (not shown), and is driven by an engine 2c and a power transmission device 2d. It has become. The left and right rotational speeds of the rear rubber tire 4 when traveling on a curved road are controlled by a differential device 4c (see FIG. 4). The front rubber tire 3 and the rear rubber tire 4 function to support the load of the vehicle body 2 when traveling on the road.

  A driver who has boarded the driver's seat of the vehicle body 2 of the dual mode vehicle 1 operates the steering wheel to direct the front rubber tire 3 in a desired direction via the control device 3a, and steps on the accelerator to depress the engine 2c and the power transmission device 2d. By driving the rear rubber tire 4 via the vehicle, it is possible to realize free road travel (see FIG. 2).

  The drive wheels 5 are fixed to the inner side of the wheel hub 4b of the rear rubber tire 4 with bolts, and are driven by the engine 2c and the power transmission device 2d to rotate around the axle 4a in the same manner as the rear rubber tire 4 so as to move along the track. It travels on the rail R which comprises (refer Fig.4 (a)). The left and right rotational speeds of the drive wheels 5 when traveling on a curved track are controlled by the differential device 4c.

  The drive wheel 5 is made of a relatively hard synthetic rubber, and the diameter dimension thereof is set to a value substantially the same as the diameter dimension of the rear rubber tire 4 or a value smaller than the diameter dimension of the rear rubber tire 4. Set to In addition, a flat tread surface 5a having a tread gradient of approximately 0 ° is formed in the entire width direction region of the drive wheel 5. Since the driving wheel 5 is made of synthetic rubber, even if the driving wheel 5 and the road surface S come into contact with each other during road travel (see FIG. 4B), the road surface S is hardly damaged. Further, since the synthetic rubber constituting the tread surface 5a of the drive wheel 5 is relatively hard, it is possible to reliably support the weight of the vehicle body 2 when traveling on a track.

  The front guide wheel 6 and the rear guide wheel 7 are provided on the front frame 2e and the rear frame 2f of the vehicle body 2 via a hydraulic telescopic cylinder 2g, and are configured to be raised and lowered by the telescopic operation of the hydraulic telescopic cylinder 2g. (See FIGS. 2 and 3).

  When traveling on the road, the hydraulic telescopic cylinder 2g is shortened and the front guide wheel 6 and the rear guide wheel 7 are raised and fixed upward by the front rubber tire 3 and the rear rubber tire 4 (see FIG. 2). On the other hand, when traveling on the track, the hydraulic telescopic cylinder 2g is extended to lower the front guide wheel 6 and the rear guide wheel 7 so as to contact with the rail R of the track (see FIG. 3).

  Further, a pair of left and right front guide wheels 6 and rear guide wheels 7 are provided, and the left and right front guide wheels 6 and rear guide wheels 7 are connected by guide axles 6a and 7a, respectively. The front guide wheel 6 and the rear guide wheel 7 are made of a metal such as iron, and are provided with a tread surface gradient and a flange to perform a track guide function. For this reason, even if the driving wheel 5 is not provided with a tread gradient or a flange, the dual mode vehicle 1 can accurately travel along the rail R.

  The front guide wheel 6 functions to support the load of the vehicle body 2 when traveling on a track. That is, when the vehicle runs on the track, the front rubber wheel 3 is lifted above the rail by the lowering of the front guide wheel 6 accompanying the extension of the front hydraulic expansion cylinder 2g. This load is applied to the front guide wheel 6.

  A driver who has boarded the driver's seat of the vehicle body 2 of the dual-mode vehicle 1 depresses the accelerator to drive the drive wheels 5 via the engine 10 and the power transmission device 11, and the track is driven by the front guide wheels 6 and the rear guide wheels 7. By performing the guidance, it is possible to realize track travel. During the track running, the front rubber tire 3 is lifted upward (see FIG. 3). Therefore, even if the driver moves the front tire 3 by operating the steering wheel during the track running, Does not affect driving.

  The front guide roller 8 and the rear guide roller 9 are provided so as to be able to project from the left and right sides of the vehicle body 2 and to be retractable in the vehicle body 2. When the dual mode vehicle 1 is traveling on the road and traveling on the track, the front guide roller 8 and the rear guide roller 9 are stored in the vehicle body 2. On the other hand, when the travel mode of the dual mode vehicle 1 is converted from the road travel mode to the track travel mode, the front guide roller 8 and the rear guide roller 9 are projected to the left and right side portions of the vehicle body 2 for the travel mode conversion described later. It is made to contact | abut to the roller contact part 12b of the left-right guide wall 12 of the structure 10. FIG. Thus, by bringing the front guide roller 8 and the rear guide roller 9 into contact with the roller contact portions 12b of the left and right guide walls 12, the dual mode vehicle 1 can be guided with respect to a predetermined track.

  Next, regarding the configuration of the structure 10 (hereinafter referred to as “travel mode conversion structure”) 10 for converting the travel mode of the dual mode vehicle 1 according to the present embodiment from the road travel mode to the track travel mode, This will be described with reference to FIG.

  The traveling mode conversion structure 10 includes a tire traveling surface 11, left and right guide walls 12, a wide track portion 13, a gauge changing portion 14, an inclined surface 15, and the like (see FIG. 5).

  The tire running surface 11 is a surface for continuously driving the dual mode vehicle 1 in the road running mode with the front rubber tire 3 and the rear rubber tire 4, and is paved flat with concrete or asphalt (see FIG. 5). A left and right guide wall 12 is erected on the tire running surface 11 and rails R constituting the wide track portion 13 and the gauge changing portion 14 are embedded (see FIG. 5). The upper surface of the embedded rail R is substantially flush with the tire running surface 11.

  The left and right guide walls 12 fulfill the function of guiding the dual mode vehicle 1 in the road travel mode to a predetermined track, and are a guide unit in the present invention. As shown in FIG. 5, the left and right guide walls 12 include a receiving portion 12 a that receives the dual mode vehicle 1 and a roller contact portion 12 b that contacts the front guide roller 8 and the rear guide roller 9 of the dual mode vehicle 1. It is comprised and is erected on the tire running surface 11.

The wide track part 13 is a track part having a gauge dimension H _MAX wider than the standard gauge dimension H _STD (1067 mm), and is used for gradually aligning the dual mode vehicle 1 with respect to a predetermined track. It is. While the dual-mode vehicle 1 travels on the wide track portion 13, the front guide wheel 6 and the rear guide wheel 7 are lowered and brought into contact with the rail R of the wide track portion 13 to separate the front rubber tire 3 from the tire travel surface 11. I will let you. In the present embodiment, the inter-gauge dimension H _MAX of the wide track portion 13 is set to 1159 mm.

The gauge changing unit 14 is connected to the wide track part 13 and has a track configured such that the gauge dimension gradually changes from the wide gauge dimension H _MAX (1159 mm) to the standardized gauge dimension H _STD (1067 mm). It is the orbit part which has. As the dual-mode vehicle 1 travels along the gauge changing section 14, it is gradually aligned to a track having a standardized gauge dimension H _STD .

  The inclined surface 15 is connected to the tire traveling surface 11, and finally transitions from road traveling by the front rubber tire 3 and rear rubber tire 4 to track traveling by the drive wheel 5, the front guide wheel 6 and the rear guide wheel 7. It is what is realized. When the dual mode vehicle 1 travels on the inclined surface 15, the rear rubber tire 4 is detached from the tire travel surface 11, and the driving wheels 5 for track traveling come into contact with the rail R and shift to complete track traveling.

  Next, with reference to FIGS. 6 to 10, the operation when the travel mode of the dual mode vehicle 1 according to the present embodiment is converted from the road travel mode to the track travel mode using the travel mode conversion structure 10 will be described. It explains using.

  First, in order to shift the dual-mode vehicle 1 in the road travel mode to the track travel mode, the driver travels the dual-mode vehicle 1 toward the travel mode conversion structure 10 by operating the steering wheel to change the travel mode. The tire 10 is made to enter the tire running surface 11 of the structure 10. At this time, the vehicle speed of the dual mode vehicle 1 is reduced to about 15 km / h to 20 km / h by a brake operation.

  At the same time as the dual mode vehicle 1 enters the receiving portion 12a of the left and right guide walls 12 erected on the tire running surface 11, the driver moves the front guide roller 8 and the rear guide roller 9 of the vehicle body 2 by a predetermined switch operation. Project to the left and right side (see FIG. 6). Then, the front guide roller 8 and the rear guide roller 9 are brought into contact with the roller contact portions 12b of the left and right guide walls 12 to perform temporary alignment with respect to a predetermined track. At this time, the dual mode vehicle 1 is still traveling on the tire traveling surface 11 with the front tire 3 and the rear tire 4.

  Next, the driver lowers the front guide wheel 6 and the rear guide wheel 7 by a predetermined switch operation so that the front guide wheel 6 and the rear guide wheel 7 are brought into contact with the rail R of the wide track portion 13, and the front The tire 3 is raised. Then, while the front guide wheel 6 and the rear guide wheel 7 having the track guide function are guided along the rail R of the wide track portion 13, the rear rubber tire 4 as a drive wheel travels on the tire running surface 11 (FIG. 7). reference). Further, since the roller contact portions 12b of the left and right guide walls 12 are provided up to the end of the wide track portion 13, the front guide rollers 8 and the rear guide rollers 9 of the dual mode vehicle 1 and the rollers of the left and right guide walls 12 are provided. The alignment using the contact portion 12b is also performed in parallel (see FIG. 7).

The dual-mode vehicle 1 that has passed through the wide track portion 13 enters the gauge changing portion 14 and continues traveling by the rear rubber tire 4, the front guide wheel 6, and the rear guide wheel 7 (see FIG. 8). Further, when entering the gauge changing portion 14, the contact state between the front guide roller 8 and the rear guide roller 9 of the dual mode vehicle 1 and the roller contact portion 12b of the left and right guide walls 12 is sequentially released. The front guide roller 8 and the rear guide roller 9 are stored in the vehicle body 2 by a predetermined switch operation (see FIG. 8). The dual-mode vehicle 1 is gradually aligned with the track having the standardized gauge dimension H _STD by traveling through the gauge changing unit 14.

  Subsequently, the dual mode vehicle 1 enters the inclined surface 15 from the gauge changing portion 14 provided on the tire running surface 11. When the rear rubber tire 4 of the dual mode vehicle 1 enters the inclined surface 15, the track driving wheel 5 provided on the same axis as the rear rubber tire 4 comes into contact with the rail R embedded on the inclined surface 15 ( (See FIG. 9). Then, the rear rubber tire 4 and the inclined surface 15 are gradually separated from each other, and the vehicle body propulsive force due to the frictional force between the rear rubber tire 4 and the inclined surface 15 gradually decreases and eventually disappears. The vehicle propulsion force due to the frictional force between the rail 5 and the rail R is generated and gradually increases.

  Thereafter, when the rear rubber tire 4 completely passes on the inclined surface 15, the dual mode vehicle 1 completely shifts to the track traveling mode by the drive wheels 5 for the track traveling, the front guide wheels 6 and the rear guide wheels 7. (See FIG. 10).

  In the dual mode vehicle 1 according to the embodiment described above, the road can be traveled by the front rubber tire 3 and the rear rubber tire 4 provided on the front and rear of the vehicle body 2 via the axle. In addition, track driving is performed by a track driving wheel 5 provided on the same axis as the rear rubber tire 4, and a front guide wheel 6 and a rear guide wheel 7 provided before and after the vehicle body 2. It can be carried out.

  The driving wheel 5 for running on the track is made of synthetic rubber and is softer than the steel wheel. Therefore, even if the driving wheel 5 and the road surface S come into contact with each other during road driving, the road surface S is damaged. This is rarely given (see FIG. 4B). Further, since the drive wheel 5 made of synthetic rubber is slightly deformed in close contact with the rail R of the track and closely contacts the rail R, the frictional force between the drive wheel 5 and the rail R increases, so that the high speed Can be realized (see FIG. 4A). Further, since the synthetic rubber constituting the drive wheel 5 is relatively hard, the weight of the vehicle body 2 can be reliably supported when traveling on a track.

  In the above embodiment, an example in which the driving wheel 5 for track traveling is made of synthetic rubber has been shown. However, the driving wheel 5 can also be made of synthetic resin. Since the synthetic resin driving wheel 5 is softer than the steel wheel, even if the driving wheel 5 and the road surface S come into contact with each other during traveling on the road, the road surface S is less likely to be damaged (FIG. 4). Further, since the synthetic resin driving wheel 5 is slightly deformed in close contact with the rail R of the track and is in close contact with the rail R, the frictional force between the driving wheel 5 and the rail R is increased. Therefore, track traveling at high speed can be realized (see FIG. 4A). Furthermore, when the drive wheel 5 is made of a relatively hard synthetic resin, the weight of the vehicle body 2 can be reliably supported during track running.

It is a perspective view at the time of seeing the dual mode vehicle concerning an embodiment of the invention from the top. It is a side view in the road driving mode of the dual mode vehicle shown in FIG. FIG. 2 is a side view of the dual mode vehicle shown in FIG. 1 in a track running mode. (A) is a figure which shows the state of the rear wheel in the track driving mode of the dual mode vehicle shown in FIG. 1, (b) shows the state of the rear wheel in the road driving mode of the dual mode vehicle shown in FIG. FIG. (A) is a top view of the structure for driving mode conversion which converts the driving mode of the dual mode vehicle shown in FIG. 1, (b) is a side view of the structure for driving mode conversion. FIG. 7 is an explanatory diagram for explaining an operation when the travel mode of the dual mode vehicle shown in FIG. 1 is converted from the road travel mode to the track travel mode using the travel mode conversion structure shown in FIG. 6. Same as above Same as above Same as above Same as above

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dual mode vehicle 2 Car body 3 Front rubber tire 4 Rear rubber tire 4a Rear axle 5 Driving wheel for track driving 6 Front guide wheel 7 Rear guide wheel

Claims (2)

Front and rear rubber tires for road driving provided on the front and rear of the vehicle body via axles;
A rubber drive wheel for running on a track provided on the same axis as the rear rubber tire;
Front and rear guide wheels for trajectory traveling up and down provided on the front and rear of the vehicle body,
A dual mode vehicle characterized by comprising: Front and rear rubber tires for road driving provided on the front and rear of the vehicle body via axles;
Synthetic resin drive wheels for running on a track provided on the same axis as the rear rubber tire,
Front and rear guide wheels for trajectory traveling up and down provided on the front and rear of the vehicle body,
A dual mode vehicle characterized by comprising:

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