Motor vehicles – Bodies – Movable cab or operator's station
Patent
1993-04-22
1994-11-29
Culbreth, Eric D.
Motor vehicles
Bodies
Movable cab or operator's station
180 8913, 180 8916, B62D 33067
Patent
active
053681193
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a cabin intended primarily for a cross-country vehicle, and particularly to such a cabin that is hangingly suspended from above, and damped against uncontrolled swinging from its support.
The operator cabins of cross-country vehicles, such as forest tractors and forest harvesters, are affixed to the vehicle chassis and therewith accompany all of the movements performed by the vehicle in the terrain. These movements may have large amplitudes and powerful accelerations and retardations, in lateral, forward and rearward directions. This often makes the work of the driver very difficult and highly strenuous, since in addition to manoeuvring the vehicle, he or she must also remain firmly seated in the driver's seat.
In order to solve this problem and therewith provide improved working conditions for the driver of the vehicle concerned, endeavours have been made to support the driving seats on gyro suspensions, to manoeuvre the cabins hydraulically from beneath, and to incorporate different types of hydraulically operable axle pendulating systems for adjusting the vehicle wheels in relation to the chassis. Examples of these proposed solutions are found described in SE-8200443-3 and SE-304292-9. These known systems are complicated and expensive.
SUMMARY OF THE INVENTION
There is provided, according to the present invention, a vehicle, especially a cross-country vehicle having a driver's cabin which is hangingly supported from above, so as to tend to provide the driver with a stable horizon. Tendency of the suspended cabin to controllably oscillate about its support is damped by use of shock absorbers.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described in more detail with reference to an exemplifying embodiment thereof and with reference to the accompanying drawings, in which:
FIG. 1 is a schematic illustration of a cabin, for example the driver's cabin and operating cabin of a forest harvester;
FIG. 2 illustrates the cabin mounted on the harvester, which in the illustrated example is inclined in the longitudinal plane; and
FIG. 3 illustrates the cabin when the vehicle inclines about its longitudinal axis, this angle being 30.degree. in the illustrated case.
DETAILED DESCRIPTION
In the Figures, the reference numeral 1 identifies a cabin, for example the driving and operating cabin of a forest harvester, and 2 identifies a support device in the form of a cabin-carrying frame which, as shown in FIG. 2, is fixedly attached to the vehicle.
The cabin 1 the term "horizontal" being given such a meaning, in this context) is suspended from the carrier frame 2 by means of a carrier device 3 and when the cabin is manned and is located in the horizontal plane, the cabin will hang in a vertical line 8 which passes through the center of gravity of the cabin 1. The carrier device 3 includes a universal joint (for example a cardan joint), whereby the cabin is suspended so as to pendulate freely in relation to the vehicle and its chassis. The carrying device 3 is attached to the centre of a cruciform yoke 4 which, in turn, is attached to the carrier frame 2 by means of a carrier plate 9, via a vibration damping connection. The carrier device may be attached to the yoke 4 and to the cabin 1 by means of rubber springs, so as to prevent the transmission of vibrations and sound from the vehicle and its machines to the cabin. Four shock absorbers 5 are mounted in the upper edges of the cabin, centrally between its corners, by means of ball bearings mounted on the cabin 1. The other ends of respective shock absorbers 5 are also fixedly journalled by means of a ball bearing on respective arms of the yoke 4. The distances between the points at which the shock absorbers 5 are attached to the cabin 1 are greater than the distances between the points at which the shock absorbers are attached to the yoke 4, as illustrated in the Figures, which means that the shock absorbers will be inclined from the cabin roof, obliquely inwards and upwards. With
REFERENCES:
patent: 3690720 (1972-09-01), Whisler
patent: 4235470 (1980-11-01), Kauss et al.
patent: 4265328 (1981-05-01), Rowa et al.
Culbreth Eric D.
Mala Skogstjanst AB
LandOfFree
Cabin, especially for a cross-country vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cabin, especially for a cross-country vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cabin, especially for a cross-country vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-68551