Self-locking differential with magnetic liquid

FIELD: transport.

SUBSTANCE: invention relates to transport engineering and can be used in cross-country vehicles. Self-locking differential with magnetic liquid includes two cups of differential compensating case, two differential axles, two differential gears, four pinion gears. The differential gears consist of gear with friction pads and gears with magnetic liquid, where gear with friction pads is made with external and internal toothing, the external toothing has the same profile and teeth number as gear with magnetic liquid, herewith, gear with magnetic liquid has axial offset from axis of differential axles in unlocked state.

EFFECT: perfected design.

4 dwg

 

The invention relates to transport machinery and can be used in all terrain vehicles.

Known differential logging car URAL-375 (Trucks with high cross (GAZ-66, ZIL-131, Ural-375). Goldovsky J. E., I. V. Zaitsev, O. M. Lavrov, publisher Voenizdat, 1968.). It includes two bowls box of differential and two half shafts, two pauloosie gear, four of the satellite.

The disadvantage of this differential is that due to the lack of a blocking element in the differential angular velocity of the wheels when turning or when slippage will be different.

The purpose of the invention - increase vehicle stability, alignment of the angular velocities of the wheels when turning, reducing the percentage of slippage and increase the performance of the car.

This is achieved with the limited-slip differential with a magnetic liquid containing two bowls of a box of differential and two half shafts, two pauloosie gear, four satellites, characterized in that pauloosie gear consists of a pinion with friction pads and gear with magnetic fluid, and gear with friction linings made with external and internal toothing, the outer gear ring has the same profile and number of teeth, ka� gear with magnetic fluid the gear with the ferrofluid have an axial offset from the axis of the axle shafts in the unlocked state.

Fig.1 shows the design of the proposed differential. Fig.2 illustrates the operation of the differential - linear motion, Fig.3 - the turning of the vehicle, Fig.4 - loss of traction of one of the wheels.

Limited-slip differential with a magnetic fluid contains two cups box of differential 1 (Fig.1), which has two axles 2, differential gear, comprising 3 satellites, driven cylindrical gear 4, palusalue gear 5 which engages with four satellites 3. In slotted hole hubs poluodetyh gears 5 are the ends of the axle shafts 2, through which the torque is transmitted to the wheels. Palwasha gear 5 consists of gears with friction linings 6 and gears with magnetic fluid 7. Gears with friction linings 6 are gear with two toothed crowns. External gear ring engages with the 3 satellites. The inner crown has the same profile and number of teeth as gear with magnetic fluid 7.

The outer contour of the gear with magnetic fluid 7 has a frictional surface, the ring gear and four groove, arranged at an angle of 90°. In a groove of the gear with magnetic fluid 7 are contour GU� 8, which allow you to move the gear 7 in a given direction. Inside gear with magnetic fluid 7 is the capacity of the magnetic fluid 9 a certain viscosity, with the pusher 10, resulting in the axial displacement of the gear 7 under the action of expansion of the magnetic fluid container 9. Gear with magnetic fluid 7 have an axial offset from the axis of the axle shafts 4 BV the unlocked state (Fig.2). Reducing the axial distance in the process is carried out using a sleeve 11 having different thicknesses in the cross section. The sleeve 11 is fixed to the bearings 12, which are rigidly crimped to the sleeve 13, having a slotted hole and planted on the axis 2.

The cover 14 is attached to the differential cups 1, there is a groove for the inductor 15 and the holes for the findings of the contacts 16 of the inductor 15. To pins 16 attached copper sleeve 17, it will be ensured that the supply voltage to the inductor 15. On the copper sleeve 17, as in the generator, under the action of the spring 18 are pressed brushes 19, from them there is an insulated conductor on the Cup of the differential 1.

The proposed design allows to align the angular velocity of the wheels when turning or when loss of traction of one wheel with the road.

In straight-line motion of a car on a level road, the drive wheels of one axle are the same way, I meet the same resistance�ellenie move and rotate at the same speed. When this Cup of the differential 1, satellites 3 and pauloosie gear 2 rotate as a unit (Fig.2).

When you turn the car in relation to the center of rotation of the wheel encounters a greater resistance to movement than the outer wheel rotates slower and slows its rotation palwasha internal gear wheel. The 3 satellites begin to rotate around their axes and accelerate the rotation of palmaceous gear 5 of the outer wheel. As a result, the drive wheels rotate at different speeds as required when driving on the turn (Fig.3).

The loss of traction of one of the wheels. Such a case is possible if one of the wheels falls on the ice, ie is losing traction is the (slippage). In this case, the proposed differential operates as follows. The difference of the angular velocities recorded by the sensors. Voltage is applied to the inductors 15, which is mounted on the differential cover 14, under the action of the magnetic field generated by the inductors 15, the magnetic fluid contained in the tank 9 gear 7, starts to expand and the pusher 10 results in axial movement of the gear 7. As well as gear with magnetic fluid 7 and pinion with friction linings 6 are in frictional engagement, it allows you to align the angular velocity of the wheels (Fig.4).

The proposed design of the differential will increase the maneuverability of the vehicle on the road.

Limited-slip differential with a magnetic liquid containing two bowls of a box of differential and two half shafts, two pauloosie gear, four satellites, characterized in that each palwasha gear consists of a gear with a friction pad and gear with magnetic fluid, and gear with a friction pad is made with external and internal toothing, the outer gear ring has the same profile and number of teeth as the gear with the magnet�Oh liquid, the gear with the ferrofluid have an axial offset from the axis of the axle shafts in the unlocked state.



 

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1 dwg

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3 dwg

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2 dwg

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