CS243913B1 - Conical differential - Google Patents

Description

(54) Tapered differential

Conical differential with artificially introduced internal friction dependent on torque, in which friction plates are intermittently mounted on the slots in the differential and planetary gears between the differential housing and the planet wheels, characterized in that the differential housing has peg holes mounted on pins of the differential engaging their bevels in the recesses of the pressure plates.

Fig. 1

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The invention relates to a lamella self -ware differential used ¹ w after phot; agricultural machinery, tractors and off-road vehicles.

In the prior art self-locking diorientals, the internal friction between the slats exerts asphial forces from the tooth engagement and axial forces of the o-d satellites mounted in the wedge-shaped cut-outs of the housing. In this case, the pins are pushed together with the satellites in the axial direction out of the tooth engagement. The disadvantage of said system is the varying tooth cogs due to wear, and the slats and difficult n-adjusting cogs in the gear during assembly.

In the case of differentials with non-changing toothed steels, a constant contact force from the elastic members is used. The disadvantage of these differentials is that the slope decreases as the applied torque increases and vice versa - when the torque decreases (when cornering j, the slope increases and the internal friction causes resistance to the cornering.

The above-mentioned disadvantages are solved by a conical differential with artificially induced friction in which. between the differential housing and the planetary wheels, the friction plates are alternately mounted on the spline of the housing and the planetary wheels, which according to the invention have in the differential housing openings for gearstones mounted on the differential storks fit into the recesses of the thrust plates displaceable in the grooves of the housing. This bearing of the differential pins exerts a thrust force on the slats depending on the magnitude of the torque transmitted, thereby ensuring a constant clamping of the differential. Since the axial contact force of the slats occurs during radial displacement of the satellites and the axial force from the toothing is absorbed by the fit of the central wheels in the differential housing, the tooth steer does not change even in the case of wear, slats.

An example of an embodiment of the conical differential with the artificially introduced internal friction according to the invention is shown in the drawings, where FIG. 1 is a front elevational view of a conical differential with internal friction introduced; FIG. 2 shows a detail of a pivot of a satellite pivot and FIG. 3 detail of toothed tiler.

.Cone of the conical clamp, differential shown in Sector. 1 is composed of two parts 1, 2 which are supported by bearings in the drive axle body. In this housing there are tightly-flanged wheels 7, 8, in which the axle 5, B is mounted on the spline. On the pin 3, the satellites 9, 10 are arranged, similar to the ones on. The pinion 4, which are in mutual engagement with the planet wheels 7, 8 with a constant zibial selection, which is provided by the friction pads 17, 18. In the case of the differential, 4 toothed stones are displaceably mounted on the pivot pins 3, 4. and allow the pins 3, 4 to rotate radially. The teeth of the cams 11 fit into the toothing of the plates 12, 13 which are axially displaceably mounted on the grooves 18 of the differential housing. The plates of the friction clutches 14, 15 are alternately mounted on said casing groove and the groove 19, 20 of the planet wheels 7, 8.

The teeth of the stones 11 and the plates 12, 13 are designed so that the axial components of the forces resulting from the transmission of the torque a and the pins 3, 4 are applied to the lamellae of the friction couplers 14, 15a, thereby creating frictional force between the lamellas. The generated frictional force prevents one of the axle wheels from spinning at j-a, here after the pad with the same friction coefficient and thus acts as a partial differential lock. When the torque is interrupted (front axle drive is switched off), the contact force on the multi-plate brake ceases, thereby reducing the clamping effect and increasing the differential efficiency.

Conical differentials according to the invention can achieve high clamping values, allowing full engine power to be used to transmit tractive effort down to the adhesion limb even on uneven coefficient of friction substrates, preventing spinning of the lightened wheel when driving off-road and reducing slippage of individual wheels.

Due to these characteristics it is suitable for use in all types of haulers, off-road machines, tractors working under conditions of frequent skidding. It is n-best suited for the switch-off front drive axle of agricultural tractors.

Claims (2)

SUBJECT Conical differential with artificially introduced internal friction dependent on the torque to be applied, in which friction plates are alternately mounted on slots in the differential and planetary casing between the differential housing and the planetary gears ³ BACKGROUND OF THE INVENTION characterized in that the differential housing has toothed stone holes (11) mounted on pins (3, 4j) which fit with their bevels into recesses of the thrust plates (12, 13J) slidably mounted in the grooves of the differential housing.