Motor vehicles – Steering by driving – Independently operable drive motors
Patent
1990-10-26
1992-06-30
Marmor, Charles A.
Motor vehicles
Steering by driving
Independently operable drive motors
180 67, 180 944, 180 946, 36442401, 36442601, B62D 600
Patent
active
051254670
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention concerns a telecontrolled four-track vehicle for the transportation of loads and/or supply of energy in areas of difficult access or dangerous for man, with no one on board.
DESCRIPTION OF THE RELATED ARTS
All-terrain vehicles are already well-known, and are capable of moving on uneven surfaces, and their track laying gear is constituted of four tracks.
The disadvantages of these vehicles are: the said vehicle; and on board, embarked in order to accomplish dangerous tasks.
Such types of vehicle, for example, are described in document EP-A-0,252,674, and they have, moreover, an additional number of disadvantages such as: ensure the movement of the vehicle, and the other to allow the tools and the machinery on board to be driven; management of the differentials and due to the fact that these pumps have fixed output and that the motors are mounted in parallel;
The main object of the present invention is to rectify the above-mentioned disadvantages and insufficiencies of present all-terrain vehicles.
SUMMARY OF THE INVENTION
According to the invention, this object is achieved by deploying either a procedure or a device according to which the vehicle is supported and moved by an assembly of four independent banks of tracks, at least two of which constitute the front train or the rear train of the vehicle, and are orientable, the vehicle being remarkable by the fact that it comprises an electronic device for the differential piloting of the four tracks, this electronic device determining the speed of each track according to the following: the track position; to whether the track is orientable or not; to the geometry of the vehicle; to the set point of speed (V0); and the steering angle of the orientable train.
According to another characteristic arrangement, only one energy center supplies, simultaneously or otherwise, the drive of the vehicle as well as the tools embarked on board of the vehicle.
The vehicle with independent tracks according to the invention has the following main advantages: surfaces with a slope more than 40.degree.; and mountainous works, forest works, agricultural works, petro chemicals, civil protection, military applications, etc.
BRIEF DESCRIPTION OF THE DRAWINGS
The objects, characteristics, and advantages that have been mentioned above and others, will be clearer from the description that follows, and from the annexed drawings to which:
FIG. 1 is an elevational view of the vehicle equipped with four independent tracks according to a first embodiment of the invention.
FIG. 1a is a semi cutaway side view of FIG. 1.
FIG. 2 is a planar view of FIG. 1.
FIG. 3 is a diagrammatic view illustrating an example of articulation of the train of the front tracks.
FIG. 4 is a diagrammatic view illustrating the composition of the bank of tracks.
FIG. 5 is a layout of an embodiment of a hydraulic subsystem.
FIG. 6 is a diagrammatic view of the entire control-check device.
FIG. 7 is a detailed diagram of the electronic control circuits of the tracks.
FIG. 8 is a diagram of the principle of a closed loop automatic control system.
DETAILED DESCRIPTION OF THE INVENTION
Hereafter is described in order:
MECHANICAL AND KINEMATIC CONCEPTION OF THE VEHICLE
As is shown in FIGS. 1 and 2, the vehicle with independent tracks according to the invention comprises a chassis supported by four tracks 11a-11b, 12a-12b, at least two of which constitute the front train or the rear train of the vehicle, are orientable, the latter being constituted, preferably of two tracks 11a, 11b of the front drive. Each track is moved by an independent hydraulic motor.
The chassis of the vehicle is composed of a square or any other shaped central girder 1, on which an assembly of frames 2 that receives the load board 3 comes to rest.
At its rear section, the chassis supports a diesel motor 4, for example of 46 CV, mounted on a rubber, or any other shock absorber 5.
A case of hydraulic oil 6, for example of a capacity of 110 liters, rests on the central girder, at the rear. A co
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Boehler A. M.
Marmor Charles A.
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