DE7147474U - Gear arrangement for motor vehicles with a low chassis height, for example for taxiway buses at airports - Google Patents

Description

oepke. 8 Munich 5, August 24, 1972 //

/ "* * / Π O ^- ι Erhardtetraße 11

'ηψ. i ^ ati U. * <. t> etpke Telephone 240675

Patent attorney

International Harvester Company

Gear arrangement for Kraftf raeuge

The transmission parts necessary to drive motor vehicles are usually in the longitudinal direction of the vehicle arranged one behind the other approximately in its longitudinal center plane. In motor vehicles, each with a differential drivable front and rear wheel drive shafts, it is also known, drive motor and gearbox side by side = to be arranged horizontally, with a drive arranged laterally offset from the longitudinal center plane of the vehicle = motor via a torque converter, one with respect to the drive = motor arranged offset, by means of a translation to the side effecting gear change = gear and a main differential from this to the front and output shafts extending to the rear and connected to the differentials of the wheel drive shafts can be driven.

Motor vehicles that are used at airfields and there under the wings and other parts of aircraft need to be able to drive and maneuver, are known to have only a low overall height and therefore have a Chassis held low, the flat roof of which serves as a stand area for craftsmen and which also has a flat plate at both ends form is provided for storing equipment. Such motor vehicles must have a powerful and therefore space-consuming drive motor. But there is only the space between the two drive shafts to accommodate the drive motor and the gearbox is available, on the other hand, the requirement is observed must be that the forward from the gear assembly

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and rear output shafts with differentials connected centrally to the wheel drive shafts, This means that the drive shafts, which may be cushioned by damping buffers, when driving over obstacles lying in the way can swing around the longitudinal axis of the vehicle, neither can one that only extends in the longitudinal direction of the vehicle, engine-gearbox arrangement arranged one behind the other, still such a system to be used in the engine and gearbox are arranged side by side.

These difficulties are eliminated in the gear arrangement according to the innovation that 3otor and gear parts in below = levels in the chassis are arranged at different heights, but taking into account the requirement that the gearboxes = arrangement receiving, between the wheel drive shafts a space running through an output shaft of the main = differentials is not hindered by the arrangement of the gearbox and both output shafts with the center of the wheel drive = waves are connected.

In the case of the transmission arrangement presupposed at the beginning, this is achieved according to the innovation in that the torque = converter, immediately following change gearbox and main = differential existing unit between the wheel drive = waves in a higher level than the drive motor, which is stored in a low-lying chassis the longitudinal median plane of the vehicle is arranged and the the main causing a translation to a deeper level: Connect the differential in a level correspondingly lower than the: torque converter and the gearbox = the output shafts with the possibly via damping = buffer-sprung wheel drive shafts are connected in the middle. Since here the drive motor and the various Ge = drive parts are housed in different levels and between the wheel drive shafts, there is a very Space-saving arrangement, which leaves free space for the passage of the one connected to the one wheel drive shaft Aus = output shaft, which makes it possible to arrange the two output shafts in the longitudinal center plane of the vehicle and which the

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leaves both ends of the vehicle free for operator stations and para Floor space.

An intended for cooling the drive motor, with a fan associated radiator or radiator is then arranged for the purpose of moderately on the side remote from the drive motor side of the chassis between the drive shafts and serving for receiving fuel container may be on the same side of the chassis, for example, arranged below the cooling fan so that these accessories necessary for the vehicle transmission can also be accommodated in the space between the drive shafts.

A Get riebeanordnung the innovation according to training is illustrated in the drawing in a Auführungungebeiapiel in

Fig. 1 in plan view,

Fig. 2 in side view,

FIG. 3 in cross section along the line 3-3 of FIG. 1.

A motor vehicle, generally designated 10, which is used for towing and maneuvering aircraft, has a low-profile chassis 16, the outline of which in £ xg. 1 is indicated by dashed lines. At both ends , the chassis is supported on wheels 20 and 26, the drive shafts 12 and 14 of which are held in support brackets 18 connected to the chassis and are cushioned by damping buffers 24. The vehicle can be driven in both directions . For the sake of simplicity, the drive shaft 14 is referred to as the front and the drive shaft 12 as the rear in the following explanation, although the position of these shafts is reversed when the direction of travel is reversed. Each drive shaft is provided in a conventional manner with a differential which is connected to input shafts 28 and 30 , respectively.

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An internal combustion engine 32, which is used to drive the vehicle, is arranged between the drive shafts 12, 14 and is offset laterally to the longitudinal center plane of the vehicle. With the prime mover 32 is; a transmission 3 * »connected, which assumes a position extending upwards and sideways to the central longitudinal axis of the vehicle from the low-lying prime mover. This transmission is drivingly connected to a torque converter 36, via the output shaft of which a change gear 38 can be driven, via which the direction and speed of the vehicle can be switched. In order to save space, this change-speed gearbox is often accommodated in a common housing with the torque converter or, if they are enclosed separately, their housings are fastened directly to one another. The output shaft 40 of the change gear 38 leads to a main differential 42 which brings about a transmission to a lower level, the lower half of which carries two output lines 44 and 46 extending in both directions. The torque converter 36, the change gear 38 and the main »-fferential 42 are arranged approximately in the longitudinal center plane of the vehicle. A shaft 48, which is connected to the output shaft 44 and extends below the aforementioned transmission parts, is connected at its other end to the input shaft 28 of the differential which is combined with the rear drive shaft 12. The other output shaft 46 is connected via an intermediate shaft 50 to the input shaft 30 of the differential combined with the front drive shaft 14.

A fan is provided for cooling the drive machine 32 connected radiator 52 is provided, the side of the torque converter 36 and to the change gear 38 is arranged on the side remote from the drive motor 32 and its Conventional drive from an electric motor, a hydraulic motor or a mechanical belt drive may exist, the belt of which is connected to the transmission 34. One to hold the fuel for the prime mover 32 serving container, not shown, can

below the radiator fan 52 back to the front Wheel 26 and laterally to the change gear 38 and to the main differential 42 be arranged.

The main components of the drive and the drive transmission are consequently arranged between the two drive shafts 12 and 1h in such a way that, with full maneuverability of the vehicle, they make it possible to maintain the desired rigidly held chassis. Both ends of the vehicle beyond the drive shafts therefore leave free space to arrange the driver's cabs with the control and switching devices and parking platforms for other accessories there.

Protection claims;

Claims (1)

• · · Sf ta • ι ι t · t · ¹ ι II t »ι t ■ I If · · ■ Il K Protection claims: Gear arrangement for motor vehicles with front and rear wheel drive shafts each drivable via a differential, which are driven by a drive motor laterally offset to the longitudinal center plane of the vehicle via a torque converter, a change gear arranged offset with respect to the drive motor, drivable by means of a side gear and a main differential with it forward and output shafts extending at the rear are drivable, characterized in that the unit between the wheel drive shafts (α2, ΐ4), which consists of a torque converter (3β), directly connected change gear (38) and main differential (42), is located in a drive motor ( 32) higher level is arranged in the longitudinal center plane of the vehicle and the main differential that causes a transmission to a lower level is in a corresponding to the torque converter and the gearbox output waves (4 · '? _Α 46) are connected in the middle of the wheel drive shafts, which may be spring-loaded via damping buffers (24). Gear arrangement according to Claim 1, characterized in that one provided for cooling the drive motor (32) with a fan-connected cooler (52) on the side of the chassis remote from the drive motor between the drive shafts (12,14) is arranged. Gear arrangement according to Claim 2, characterized in that a fuel container is arranged below the cooler is.