JPH05162516A - Vehicle to be used for both tire travelling and track travelling - Google Patents

Abstract

PURPOSE:To provide a vehicle to be used for both tire travelling and track travelling, which can control the traction of a driving tire wheel against the track surface freely in response to the various condition such as acceleration, deceleration, coasting travelling, high speed travelling, traction travelling by adjusting the relative load distribution of driving tire wheels and track wheels accurately, and fixing the under that condition. CONSTITUTION:In a vehicle having road travelling tire wheels 2 and track travelling wheels 3, in which each track wheel 3 is supported by a track wheel support shaft 6 freely to be folded for lifting by a cylinder device 4, each elevating device 8, which consists of a screw type jack for changing the relative load distribution of a driving tire wheel 2a and a track wheel 3 provided near it and a bolt fastening type vertical position adjusting device, is arranged between each track wheel support shaft 6 and a car body frame 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when traveling on a road, allows tire wheels to be grounded on the road surface like a typical automobile, and when traveling on a railroad track, raceways provided in front of and behind the vehicle body. With respect to the improvement of a tire running track / vehicle that transmits driving force to the track surface by the road driving tire wheel while making contact with the track surface, more specifically, relative load distribution between the track wheel and the driving tire wheel The present invention relates to a vehicle that also serves as a tire running track and that can finely control the traction of a driving tire wheel by precisely adjusting.

[0002]

2. Description of the Related Art Generally, when carrying out an accident process on a railroad orbit or performing various inspections and track maintenance work,
We use orbital vehicles equipped with these work facilities, and these work vehicles are required to be maneuverable so that they can move or work in a short time. Conventionally, vehicles that meet this type of requirement are tracked vehicles equipped with work machines such as cranes. However, if the track is damaged, it will run near the accident site by running on orbit. Therefore, there is a vehicle such as a truck in which a track wheel is provided in addition to a normal tire wheel so that the vehicle can travel on both the road and the track.

Then, the vehicle approaches the destination near the destination, and at the crossing near the destination, the stored bearing ring is lowered until the contact surface is at the level of the contact surface of the tire. , I am trying to switch to running on orbit.

[0004]

In the above-mentioned vehicle, since the driving force is not transmitted to the raceway wheels, in addition to this raceway wheel, among the wheels for road traveling, the drive wheels contact the raceway surface. As a result, the driving force is transmitted to the track and the vehicle is running. Various traveling conditions are conceivable when a vehicle of this type travels on an orbit. However, when traveling a heavy object at a low speed or when carrying a heavy object on a bed, When a large driving force needs to be transmitted to the raceway surface, it is necessary to increase the ground contact force of the driving tire wheel with respect to the raceway surface. On the contrary, when the vehicle travels at a relatively high speed in a lightweight state, it is necessary to relatively increase the ground contact force of the raceway ring with respect to the raceway surface in order to increase the stability of the raceway running. In addition, the load distribution on the race wheels and the drive tire wheels is changed according to the wear state of the tires, the gradient rate of the race track, or the change in the friction coefficient of the raceway surface in rainy weather, etc. Need to control.

However, the elevating type orbital wheel provided in the conventional tire running track / combined vehicle is stored when traveling on the road and lowered to the track surface when traveling on the track.
It was only grounded to this, and it was difficult to finely adjust the vertical position of the bearing ring near the grounding point of the bearing ring. Therefore, the relative load distribution between the drive tire wheel and the raceway wheel cannot be precisely adjusted, and the traction of the drive tire wheel cannot be finely controlled. In the case of loading a heavy load on the bed, it is not possible to give sufficient traction to the drive tire wheels,
There is a problem that the driving tire wheels slip and the mobility of the vehicle is significantly reduced.

In view of the above problems, the present invention accurately adjusts the relative load distribution between the driving tire wheel and the bearing wheel, and further fixes the load distribution to accelerate, decelerate, coast, or An object of the present invention is to provide a vehicle for combined use of a tire running track capable of freely controlling the traction of a driving tire wheel with respect to the track surface in accordance with various running states such as high speed running and towing running.

[0007]

A vehicle for combined use with a tire running track according to the present invention has a tire wheel for road running and a track wheel for running track, and the track wheel can be flipped up by a cylinder device. In a vehicle pivotally supported on a wheel support shaft, a screw type jack for varying relative load distribution between a drive tire wheel and a bearing ring provided in the vicinity thereof,
A lifting device provided with a bolt fastening type vertical position adjusting device is interposed between the bearing ring support shaft and the vehicle body frame.

[0008]

[Operation] The vehicle for combined use with the tire running track of the present invention has the above-mentioned configuration. The bolt of the vertical position adjusting device is loosened, the grounding force of the bearing ring is adjusted with a screw type jack, and then the bolt is adjusted. By re-tightening, the relative load distribution between the race ring and the drive tire wheel can be made variable, and in that state the vertical position of the race ring can be reliably fixed, so acceleration / deceleration, coasting According to various traveling states such as traveling, high-speed traveling, and towing traveling, it is possible to always precisely control the traction of the driving tire wheel with respect to the raceway surface.

[0009]

EXAMPLES Examples of the present invention will be described with reference to the drawings. As shown in FIG. 1, a vehicle for combined use with a tire running track 1 of the present invention is provided with a tire wheel 2 for road running and a track ring 3 for running tracks such as a railroad. As shown by, the cylinder device 4 can be flipped up and stored backward. When traveling on a road, the raceway 3 is housed and only the tire wheel 2 is grounded on the road surface to travel. On the raceway surface 5, the front and rear, left and right raceways 3 are grounded, and The driving tire wheel (rear wheel tire) 2a is grounded to the raceway surface 5, and the driving force is transmitted to this raceway surface 5.

Further, among the tire wheels 2 for road traveling, the driving tire wheels (rear wheel tires) 2a need to transmit the driving force of the engine to the track surface 5 even when the vehicle is running on the track. As shown in the drawing, the distribution of the mutual grounding force with respect to the raceway surface 5 is properly adjusted between the rear raceway wheel 3a and the traction of the drive tire wheel 2a with respect to the raceway surface 5 so that the traction can be finely adjusted
An elevating device 8 is provided between the bearing ring support shaft 6 supporting the bearing ring 3 and the vehicle body frame 7.

As shown in, for example, FIGS. 2 to 4, the lifting device 8 used in the vehicle 1 for running a tire track according to one embodiment of the present invention includes a screw type jack 9 and a bolt fastening type vertical position. It is configured to be used together with the adjusting device 10. The vertical position adjusting device 10 is provided so that the fixed bracket 11 fixed to the vehicle body frame 7 fits into the adjustment bracket 12 fixed to the bearing ring support shaft 6, and is formed on the adjustment bracket 12. By inserting the bolt 13 into the elongated hole 12a and screwing it into the nut portion 11a provided on the fixed bracket 11, the vertical position of the adjustment bracket 12 with respect to the fixed bracket 11, that is, the race ring 3 with respect to the body frame 7. The vertical position can be adjusted and fixed along the long hole 12a.

When the vertical positional relationship between the bearing ring support shaft 6 provided with the bearing ring 3 and the vehicle body frame 7 is adjusted, the bearing ring support shaft 6 is provided between the bearing ring support shaft 6 and the vehicle body frame 7. Operate the screw type jack 9 to raise and lower the bearing ring 3,
The distribution of the ground contact force (load distribution) between the rear race wheel 3a and the drive tire wheel 2a is easily changed. For example, in order to increase the ground contact force of the driving tire wheel 2a when placing or pulling a heavy object on the bed 14 of the vehicle 1 that is used as the tire traveling orbit, the rear bearing wheel 3a is attached to the raceway surface 5. Need to rise. Therefore, first, from the outside of the adjustment bracket 12 of the vertical position adjustment device 10, the nut portion of the fixed bracket 11 is
Loosen the bolt 13 screwed to 11a, operate the jack 9 to raise the rear bearing ring 3a so that the vertical position is at an appropriate position, and after positioning is complete, fasten the bolt 13 to secure the fixing bracket. 11 and the adjustment bracket 12 are fixed.

On the contrary, when the vehicle travels at a high speed in a relatively lightweight state, it is necessary to relatively increase the ground contact force of the rear raceway wheel 3a with respect to the raceway surface 5 in order to increase the stability of the raceway running. Therefore, the ground contact force of the driving tire wheel 2a with respect to the raceway surface 5 is reduced. In this case, loosen the bolt 13 in the same manner as described above, then operate the jack 9 to lower the rear bearing ring 3a to an appropriate position, and further tighten the bolt 13.
The vertical position of the bearing ring 3 is adjusted and fixed.

Since the vertical position of the bearing ring 3 can be finely adjusted in this way, the traction of the drive tire wheel 2a with respect to the bearing surface 5 can always be precisely controlled. When operating the vertical position adjusting device 10 of the elevating device 8, as shown in FIG. 2, the display portion 15 such as a scale is attached to the fixed bracket 11 or the like so that the elevating state of the bearing ring 3 can be easily confirmed. It is more preferable to provide.

[0015]

The tire running track / combined vehicle of the present invention has tire wheels for road running and track wheels for track running, and the track wheels are pivoted on the track wheel support shaft so that they can be flipped up by the cylinder device. In the supported vehicle, a screw type jack and a bolt tightening type vertical position adjusting device are provided for varying the relative load distribution between the drive tire wheel and the bearing ring provided in the vicinity thereof. Since the lifting device as described above is interposed between the bearing ring support shaft and the vehicle body frame, the following effects can be obtained.

By loosening the bolts of the vertical position adjusting device, adjusting the grounding force of the bearing ring with a screw type jack, and then re-tightening the bolts, the relative load distribution between the bearing ring and the driving tire wheel is distributed. It can be variable, and the vertical position of the bearing ring can be reliably fixed in that state, so the raceway surface can be adjusted according to various driving conditions such as acceleration / deceleration, coasting, high speed traveling, and towing traveling. It is possible to always precisely control the traction of the driving tire wheel with respect to. As a result, it is possible to secure a sufficient load on the bearing rings to improve running stability during high-speed running,
In addition, since the ability to transmit driving force to the track surface can be maximized during towing, it is possible to pull heavy objects.
Can be transported. Thus, it becomes possible to adjust the ideal setting of load distribution in a relatively short time for various running conditions.

[Brief description of drawings]

FIG. 1 is a side view of a tire traveling track / combined vehicle according to an embodiment of the present invention.

FIG. 2 is a side view of an elevating device for a vehicle that also serves as a tire traveling track in FIG.

FIG. 3 is a plan view of a mounting portion of the lifting device of FIG.

4 is a view of the lifting device of FIG. 2 as seen in the direction of arrow A. FIG.

[Explanation of symbols]

1 Tire running track vehicle 2 Tire wheel 2a Drive tire wheel 3 Track wheel 4 Cylinder device 6
Bearing ring support shaft 7 Body frame 8 Lifting device
9 Jack 10 Vertical position adjustment device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000100300 Isuzu Special Equipment Development Co., Ltd. 3-26-7 Minamioi, Shinagawa-ku, Tokyo (72) Inventor Minoru Kusunoki 1-6-5, Marunouchi, Chiyoda-ku, Tokyo Japan Passenger Railway Co., Ltd. (72) Inventor Mitsuharu Mizuno 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Railway Co., Ltd. (72) Inventor Masao Suda 1-6-5 Marunouchi, Chiyoda-ku, Tokyo East Japan Passenger Railway Co., Ltd. (72) Inventor Tomoyuki Ojima 1-10-15 Umejima, Adachi-ku, Tokyo Mizutani Corp. (72) Inventor Yasumitsu Moriki 6-2-1 Onodai, Sagamihara-shi, Kanagawa Marumaju Car Vehicle Co., Ltd. (72) Inventor Ken Matsuda 6-2-1 Onodai, Sagamihara City, Kanagawa Prefecture Maruma Heavy Car Co., Ltd. (72) Inventor Tadashi Onuki 2-4-12 Nagatacho, Chiyoda-ku, Tokyo Within Tokyo Isuzu Motors Limited (72) Inventor Nobuhiro Ozawa 2-4-12 Nagata-cho, Chiyoda-ku, Tokyo Inside Isuzu Motors Limited, Tokyo (72) Inventor Muneyuki Takashiro 63 Nakaodai, Naka-ku, Yokohama-shi, Kanagawa

Claims (1)

[Claims] 1. A vehicle having tire wheels for road traveling and orbit wheels for orbital traveling, wherein the bearing wheels are pivotally supported on a bearing ring support shaft so as to be capable of being flipped up by a cylinder device. A screw-type jack for varying the relative load distribution with the bearing ring provided in the vicinity,
A tire traveling track / combined vehicle, characterized in that an elevating device provided with a bolt fastening type vertical position adjusting device is interposed between the bearing ring support shaft and the vehicle body frame.