A limited-slip differential

 

(57) Abstract:

The invention relates to the field of engineering, in particular to driving axles for cars and motorcycles supplied by the differential mechanisms to ensure non-rigid kinematic connection between the two wheels of the axle. A limited-slip differential consists of a casing 1, host 2 and slave 3 gears, the drive shaft 4 and output axes 5, two mechanisms of free running, connecting the past with the driven gear wheel 3, the mechanism for coordination mechanisms of free running. The mechanisms of free running have a body-jamming, located between the sleeves 6 and 7 and is made in the form of packets of elastic plates. Plate one end mounted on axes rotatably in the holder 6 and the other end in contact with the ferrule-sprocket 7, made of rigidly interconnected blocks hrapovic disks. On the axes 5 is a mechanism for coordination mechanisms freewheel representing the blocks 10 gear external gear rigidly connected among themselves and with the possibility of axial movement along the axes for subsequent engagement more gear 11 of the block with the crown gear internally. the technical result - the reduction of contact stresses in the mechanisms of a free motion due to the contact of elastic plates with internal ferrule (asterisk) on the surface, ensuring a clear process actuation mechanism for coordination mechanisms of a free motion, simple design. 2 Il.

The invention relates to the field of mechanical engineering and, in particular, to the driven axles for cars and motorcycles supplied by the differential mechanisms to ensure non-rigid kinematic connection between the two wheels of the axle.

Non-rigid kinematic relationship both wheels drive axle caused by unequal angular velocities during cornering of the vehicle, as well as different curvature track individual wheels in both the horizontal and vertical directions, different rolling radii of the wheels due to unavoidable tolerances in the manufacture of tires and different wear or uneven load on the wheels (see Liferov A. H. Differentials of automobiles and tractors. M: Mechanical Engineering, 1972).

Traditional design axles with differential mechanisms are quite complex, expensive in manufacturing and low-power modes of transport (ATVs, microso the ial group, comprising a housing, master and slave gears, output shafts associated with the driven toothed wheel, two roller mechanisms freewheel (USDA), and the mechanism for coordinating the work of the Ministry of agriculture. The mechanisms of free running have a body-jamming, made in the form of rollers located between the clamps. Some clips are multi-faceted inner surface, and the other made in the form of sleeves. The matching mechanism is designed as two separators installed on the axes with clearance in the circumferential direction, and the elastic elements of the ring shape, clamped the rollers to the bushings. Rotation of the gears causes the charge internal polyhedral surfaces of the clamps on the rollers USDA, getting jammed one of them, which is kinematically connected with the axle, with a greater resistance to rotation.

The disadvantages of this device should be attributed, firstly, high contact stresses in the Ministry of agriculture, due to the action of large normal forces (10...20 times superior tangential force to transmit torque) and the contact of the rollers with the master and the slave elements on line. Secondly, data USDA require high precision manufacturing and Assembly order ravnomernogo jamming and output mechanism inoperative. All these shortcomings have resulted in a low durability of the differential and low load capacity (prototype: A. with. NO. 1490356, MKI F 16 N 1/38, 60 TO 17/20).

The invention solves the problem of increasing the load capacity of the differential and increase its service life.

The technical result obtained by carrying out the invention, consists in the following: reduction of contact stresses in the mechanisms of a free motion due to the contact of elastic plates with internal ferrule (asterisk) on the surface, ensuring the coordination mechanism of the working mechanisms of a free motion in the form of a gear transmission of a clear process triggers this mechanism, the simplicity of the design.

This technical result is achieved by the fact that in cambiocorsa differential, comprising a housing, master and slave gears, output shafts, two free-wheeling mechanism, linking the past with the driven toothed wheel and having a body-jamming, shroud and a mechanism for coordination mechanisms of free running, what's new is that in the mechanism of a free motion of the body jamming are packages of elastic plates, one ends installed the fight block hrapovic disks, rigidly connected with each other and are displaced relative to each angular step, equal to the ratio of the angular step ratchet drive to the number of disks, each yoke is rigidly connected to the crown gear of the internal gear concentrically located relative to the axes, and the last is the mechanism for coordinating the work of the mechanisms of free running, which represent units of gear external gear rigidly connected among themselves and with the possibility of axial movement along the axes for subsequent engagement more gear unit with crown gears internal gears or lower gears, crown gears internal gears through the parasitic wheel.

Technical solutions with the features distinguishing the claimed solution to the prototype, is not known and obvious manner from the prior art do not follow. It can be considered that the claimed solution is new and involves an inventive step.

The invention is illustrated by drawings, where Fig.1 shows a kinematic diagram of the differential, and Fig.2 - the design of the free-wheeling mechanism.

A limited-slip differential consists of a casing 1, host 2 and slave 3 gears, the wheel 3, and mechanism for coordination mechanisms of free running. The mechanisms of free running have a body-jamming, located between the clamps. Moreover, the cage 6, which represents a multi-faceted inner surface, have holes to install packages elastic plates. Other carriers made in the form of sprockets 7, in relation to each other they are concentric, but not rigidly connected. Body jam is made in the form of packets of elastic plates 8, one ends of which are mounted on the axles for rotation within a housing 6, and the other ends are in contact with the sprocket 7. The asterisk is a block hrapovic disks rigidly connected with each other and offset from each other at angular step, equal to the ratio of the angular step ratchet drive to the number of disks. Each ratchet disk has its own elastic plate package becoming jammed plate 8, having a common axis of rotation. Each ferrule 6 is rigidly connected to the crown gear of the internal gear 9, concentrically located relative to the axes 5. On the axes is the mechanism for coordination mechanisms freewheel representing the blocks 10 gear external gear rigidly connected between sbloca with the crown gear of the internal gear 9 or smaller gear 12 with the crown gear of the internal gear 9 through the parasitic wheel 13.

The device operates as follows. When the application of torque to the drive wheel 2 in the case of identical rotational speed of output axle shafts torque is transmitted to the follower wheel 3, the driving shaft 4, the sprocket 7. Then, from the stars packets plate 8 is transmitted to the cage 6 with gears internal gears 9, and from them through a large gear 11 of the block 10 gears on the output shafts 5.

In the case of rotation, for example, the left speed right axis becomes higher, the yoke relative to the sprocket rotates faster, i.e. idle. The entire torque is transmitted through the mechanism of a free left turn.

When reverse gear is engaged, the unit 10 gear moves in the axial direction, the mesh is smaller gear 12 of the block and through the parasitic wheel 13 transmits torque to the crown gear of the internal gear 9 with a decreasing gear ratio. With most gear 11 out of engagement with the crown gear of the internal gear 9.

The design of the differential has the following advantages compared with the known solutions:

First, as the mechanism of a free course offered ratchet mechanism on aema the design of the ratchet allows you to provide the minimum step of the mechanism, dramatically reduces shock effects when jamming has a clear process of jamming and wedging.

Thirdly, such a differential is less sensitive to inaccuracies of manufacture and Assembly, allows the wear plates without compromising performance, characteristics, and work effort.

A limited-slip differential, comprising a housing, master and slave gears, output shafts, two free-wheeling mechanism, linking the past with the driven toothed wheel and having a body-jamming, shroud and a mechanism for coordination mechanisms freewheel, characterized in that the free-wheeling mechanism of the body jamming are packages of elastic plates, one end mounted on the axles for rotation within a housing and the other end in contact with the asterisk representing a block hrapovic disks rigidly connected with each other and offset from each other at angular step, equal to the ratio of the angular step ratchet drive to the number of disks; each clip is rigidly connected to the crown gear of the internal gear concentrically located relative to the axes, and the last is the mechanism for coordinating the work of mechanisms FL the th possibility of axial movement along the axes for subsequent engagement more gear unit with crown gears internal gears or lower gears, crown gears internal gears through the parasitic wheel.

 

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SUBSTANCE: proposed differential lock control system contains fluid medium supply source with reducing 7, three-position distributor 11, two-chamber cylinder consisting of control space A of lock-up clutch 4 formed by its housing and movable partition 34, and additional diaphragm chamber 6 having its control space Б arranged coaxially and in series relative to control space of lock-up clutch 4. Movable partition 34 is connected with pressure disk 29 by means of rod 30 rigidly connected by one end with pressure disk 29. Rod 30 interacts with diaphragm 32 of additional diaphragm chamber 6, and it passes in its middle part through central part of movable partition 34, being rigidly connected with support plate 33 interacting with partition 34. Space Б of additional diaphragm chamber 6 communicates with three-position distributor 11 selectively communicating said spaces with drain main line 14 and reducing regulated valve 7.

EFFECT: increased capacity owing to automatic reduction of locking at cornering of vehicle and decreased skidding of leading wheel.

2 dwg

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