JPH09142116A - Vehicle to run on both track and land - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid collision accidents and ensure safety on work by elevating and storing tracking wheels not to be projected from both ends of a land traveling means in the traveling direction. SOLUTION: A traveling part consists of crawlers 12 to travel on a land and tracking wheels 3 provided inside thereof to travel on a track 2. The tracking wheels 3 are constructed in an elevatable manner to be switchable for traveling with the crawlers 12 and with the tracking wheels 3. The tracking wheels 3, which are elevated and stored at traveling with the crawlers 12, are not projected from both ends of the crawlers 12 in the traveling direction or in the longitudinal direction. To do so, the length of an arm 4 and the journalably supporting position of its base end, the dimension of a mounting frame 5 and the diameter and the mounting position of the tracking wheels 3 should be predetermined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-road vehicle capable of running on orbit and on land. In addition,
The term "land" as used herein refers to a land portion other than an orbit such as a road or unpaved ground.

[0002]

FIG. 4 shows a conventional road-rail vehicle. This track-and-rail vehicle is equipped with a crawler b as a land traveling means at the lower part of the vehicle body a, and a track wheel c inside thereof. The track wheel c is mounted at the tip of an arm d that can swing up and down, and can be moved up and down by a cylinder e. Therefore, it is possible to switch between crawler traveling and track wheel traveling. (See Japanese Patent Laid-Open No. 4-321409, Japanese Utility Model Laid-Open No. 4-74105).

However, the above-mentioned conventional rail-road vehicle is stored with the track wheels c protruding from both ends in the traveling direction of the crawler b, that is, from the front and the rear, when the crawler is traveling. As a result, the protruding track wheels c become obstacles during crawl running, causing various problems.

For example, the track wheels c may come into contact with workers, structures, installations, etc., and work safety becomes a problem. In addition, when pile driving or excavation is desired to be performed as close as possible to the vehicle body, there is a problem that the protruding track wheels c are an obstacle.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and the track wheels can be housed so as not to project from the front and rear of a land running means such as a crawler. An object of the present invention is to provide a track-and-rail vehicle that eliminates contact accidents, secures work safety, and can perform pile driving and excavation work at a position close to the vehicle body.

[0006]

As a means for solving the above-mentioned problems, the present invention comprises a land running means and a track wheel that can be raised and lowered. In a track-and-rail vehicle that is configured to be capable of switching, the track-wheel is raised so that it can be stored so as not to project from both ends in the traveling direction of the land traveling means. provide. Further, the track wheel is constructed so that it can be lifted up and down by being mounted on the tip end of an arm that is pivotally supported by the vehicle main body and is extended in the traveling direction of the vehicle and is vertically swingable. In the arm, the length of the arm and the pivotal support position of the base end portion to the vehicle body are set so that the track wheels do not project from both ends in the traveling direction of the land traveling means. To provide a road-rail vehicle.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. <B> Overall Configuration FIG. 1 shows the overall configuration of the vehicle. In the figure, reference numeral 1 denotes a vehicle body, which is mounted on a traveling portion so as to be capable of turning. In front of the vehicle body 1, a working arm 11 for mounting various working tools is equipped. The traveling unit includes a landing crawler 12 and the like, and a track wheel 3 for traveling on the track 2 inside thereof, and the track wheel 3 is configured to be vertically movable. The traveling and the traveling by the track wheels 3 can be switched.

<B> Arm As shown in FIGS. 1 and 2, a base frame 13 has a base end portion of an arm 4 pivotally supported, and the arm 4 extends in the traveling direction of the vehicle. Equipped to project. Also, the main body frame 13
The base end portion of the cylinder 41 is pivotally supported on the upper part of the cylinder 4, and the tip end of the cylinder 41 is pivotally supported on the tip end portion of the arm 4. Therefore, when the cylinder 41 is expanded and contracted, the arm 4 can be swung in the vertical direction as shown in FIG.

<C> Slide Rail As shown in FIGS. 2 and 3, the arm 4 is provided below the arm 4.
The slide rail 42 is attached in the direction orthogonal to. The slide rail 42 uses, for example, a bar material having a substantially I-shaped cross section, and is equipped with two slide rails 42 at appropriate intervals in the traveling direction of the vehicle.

<D> Mounting Frame The mounting frame 5 is a member for mounting the track wheel 3 and its rotating mechanism. A slide member 51 is attached to the upper portion of the attachment frame 5. This slide member 51
Is, for example, a block material having a substantially concave cross section that slidably fits with the slide rail 42.
Attach it to the specified position so that it will be fitted to 2 each at 2 points.

The mounting frame 5 is slid by, for example, jacks 52 arranged in parallel with the slide rail 42. By extending and contracting the jack 52, the mounting frame 5 can be moved along the slide rail 42.

<V> Orbital Wheel At the lower end of the mounting frame 5, an orbital wheel 3 for traveling on the orbit 2 is installed. This track wheel 3 is provided with a crawler 12
When the vehicle is traveling, the vehicle is raised and stored, but at this time, as shown in FIG. 1, the track wheels 3 are stored so as not to project from both ends of the crawler 12 in the traveling direction, that is, the front-back direction.
For that purpose, the length of the arm 4 and the pivotal support position of the base end thereof, the dimension of the mounting frame 5, the diameter of the track wheel 3 and the mounting position are set in advance.

<F> Rotation Mechanism The rotation mechanism of the track wheel 3 is an independent type in which one track wheel 3 has one rotation mechanism. As shown in FIG.
The other end of the rotary shaft 31 of the orbiting wheel 3 is received by a bearing 53 fixed to the mounting frame 5, and a gear 32 is provided on the way of the rotary shaft 31. Then, the rotational force of the motor 6 fixed to the mounting frame 5 is transmitted to the gear 32 via the chain 61, so that the track wheel 3 can be rotated. In addition, the rotation mechanism only front wheels and only rear wheels,
Alternatively, it may be attached to all wheels such as all wheels.

[0014]

As shown in FIG. 2, the orbital wheels 3 are lowered while traveling on the track 2, and when traveling on the ground or the like, the orbital wheels 3 are raised and stored. The orbital wheel 3 is stored
This is performed by contracting the cylinder 41 and raising the arm 4, and at this time, as shown in FIG.
Can be stored so as not to project from both ends in the traveling direction of the crawler 12, that is, from the front-back direction. Moreover, when using on another route, as shown in FIG. 3, it can respond by expanding and contracting the jack 52 and adjusting the width between the track wheels 3.

[0015]

[Other Embodiments] As described above, the land traveling means are the
Although the case of using a vehicle has been described, when the present invention is applied to a road-rail amphibious dump truck or the like, a plurality of wheels such as tires are used as the land traveling means.

[0016]

Since the present invention has been described above,
The following effects can be obtained. <B> Since the track wheels can be stored so as not to project from both ends of the land traveling means in the traveling direction, contact accidents can be eliminated and work safety can be ensured.

<B> Further, since pile driving and excavation work can be performed at a position close to the vehicle body, the workability is excellent.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view of a track-and-rail vehicle according to the present invention.

FIG. 2 is an explanatory view of a side surface of a main part

FIG. 3 is an explanatory view of the front of the main part.

FIG. 4 is an explanatory view of a conventional technique.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Junichi Mitsunaga 1-16-14 Shibuya, Shibuya-ku, Tokyo Tokyu Construction Co., Ltd. (72) Inventor Eijiro Seto 2-6-2 Otemachi, Chiyoda-ku, Tokyo No. Nitto Construction Machinery Co., Ltd. (72) Inventor Yoshihiro Nishiguchi No. 6-2 Otemachi 2-chome, Chiyoda-ku, Tokyo

Claims (2)

[Claims] 1. A track-and-rail vehicle comprising land-based traveling means and orbital wheels that can be raised and lowered so that switching between land running and on-orbit running can be performed by raising and lowering the track wheels. The land-based vehicle is characterized in that it can be housed so as not to project from both ends of the land traveling means in the traveling direction. 2. The road-rail vehicle according to claim 1,
The track wheel is configured to be vertically movable by being mounted on a tip end of an arm that is pivotally supported by a vehicle main body and extends in the traveling direction of the vehicle and is vertically swingable. In the arm, the length of the arm and the pivotal support position of the base end portion to the vehicle body are set so that the track wheels do not project from both ends in the traveling direction of the land traveling means. Let's say, a road-rail vehicle.