Gear differential soft lock
The invention relates to the field of engineering. Gear differential includes half-shaft gear and satellites are installed on the same axis and are made integral with the sleeves. The inner surface of the bushings one satellite has a longitudinal straight grooves with a depth of half the ball. The outer surface of the sleeve of the second satellite has a sinusoidal groove. The sleeve of the second satellite is placed into the sleeve of the first satellite. Balls placed between the sleeves in the above-mentioned grooves. When the rotation of the satellites carry the balls, and the balls vary, and the higher the frequency of these fluctuations, the greater the force of friction between the satellites, which creates a blocking effect. The technical result - improved terrain vehicles. 3 Il. The prior art. In bridges BTR-60 PB and bridges of the GAZ-66 is used Cam self locking differentials. Work Cam conventional prefilled auto-disable differential is based on a large friction between the sprocket axes.Most cars of domestic and foreign production are equipped with gear differentials. The main disadvantage of the gear differential is low t is greet the drive in the ice and on the road.Summary of the invention In Fig.1 depicts a differential gear of a soft block, where 1 - differential housing 2 - satellite made integral with the small sleeve. On the outer surface of the small sleeve has a groove depth of half the ball 4 with sinusoidal curvature. In Fig.2 shows a scan of the outer surface of the small sleeve, 3 - gear axes, 5 - axis, 6 - satellite made integral with the large sleeve of Fig. 3 depicts a large bushing, end view. On the inner surface of the large sleeve has a longitudinal straight grooves with a depth of half the ball 4, 7 - axis satellites. Small sleeve satellite 2 is placed in a large sleeve satellite 6. The number of balls is determined by the number of longitudinal straight grooves on the inner surface of the large sleeve satellite 6.When driving in a straight difference of revolutions of the gear axes 3 will be zero, in this case, the satellites do not rotate.When changing direction of movement of the car the difference in speed gears 3 will be small and satellites 2 and 6 will rotate in opposite directions on the axis 7, the balls 4, the influence of the walls of the longitudinal straight grooves large sleeve satellite 6, will ride along with the th differential.When spin one wheel the difference of revolutions of the gear axes increases dramatically will increase the speed of the satellites, and therefore will increase the speed of the balls. Moving along a sinusoidal groove, the balls will produce oscillatory motion, and the higher the speed, the higher the oscillation frequency and the higher the friction force between the satellites and the force of rotation is transmitted not slipping wheel.Changing the number of peaks of the sinusoidal grooves, or by changing the diameter of the bushings, will change the oscillation frequency of the balls. So you can install the necessary difference of revolutions of the gear axes, which will be blocking effect.The technical result - improved terrain off-road and road cars.
ClaimsGear differential soft block containing half-shaft gear and mounted for rotation on one axis of the two satellites is made integral with the sleeve, the inner surface of one of which has a longitudinal straight grooves with a depth of half the ball, and balls, characterized in that the outer surface of the sleeve of the second satellite has a sinusoidal groove depth is Ricky half-submerged in the longitudinal straight grooves of the sleeve of the first satellite and the half sinusoidal groove of the sleeve of the second satellite.
FIELD: transport engineering.
SUBSTANCE: proposed differential has case 1 which accommodates coaxially installed axle-shafts of drive wheels, cages 7, 8, driven bushings 3, 4 with splines for connection with drive wheel axle-shafts coaxially installed in cages. Case 1 is made in form of cylindrical bushing on inner surface of which longitudinal wedging cavities for rollers 5, 6 are made. Each roller in each cavity can move along driven bushing from one wedging position into the other. Cages 7, 8 are made in form of hollow cylinders with rectangular holes on surface whose number corresponds to number of longitudinal wedging cavities for rollers. On end face surface of cages 7, 8 at least one slot is made on end face surface of one cage and hole with rigidly fitted-in pin on end face surface of other cage. Pin of one cage gets into slot of other cage forming movable link for angular displacement of cages in relatively opposite directions.
EFFECT: improved reliability, roadability and safety of vehicle.
FIELD: mechanical engineering.
SUBSTANCE: differential comprises housing (1), cross-shaped or straight shaft (5) of satellites, a number of satellites (4), and gear pair (2) of semiaxles. When gears (2) of semiaxles cooperate with satellites (4) the gear ratio changes at least in two stages. The number of stages is multiple to the number of teeth in satellites (4) and gears (2) of the semiaxles.
EFFECT: expanded functional capabilities.
16 cl, 5 dwg, 1 tbl
FIELD: transport engineering; bicycles.
SUBSTANCE: invention is designed for devices automatically changing gear ratio without interruption of power flow. Proposed drive contains two differentials. Force sensor 5 is installed between input shaft 8 and common input of both differentials, namely power differential 1 and regulating second differential 2. Said force sensor 5 cuts in braking device 4 at rise of load, said braking devices is idling at direct drive and is connected with regulating input of second differential 2. As a result, output gear 21 of second differential 2 starts rotating and self-braking drive 3 releases carrier 25 of power differential 1. Proposed drive automatically changes over from direct drive to drive with changed gear ratio. Moment of changing over can be regulated by tensioner 6 of spring 19 of force sensor.
EFFECT: facilitated selection of step-down gear in wide range of gear ration depending on individual capabilities of user.
FIELD: mechanical engineering.
SUBSTANCE: invention relates to methods of control of differential locking of multidrive wheeled vehicles and it can be used at designing of systems to control tractive forces of driving wheels of multidrive vehicles and carrying out investigations of wheeled vehicles. proposed method of control of differential locks comes to locking of differential for definite periods of time at threshold values of mismatching of mechanical parameters of driving wheels intercoupled by said differential and unlocking differential at expiration of definite of time or at achievement of threshold value of steerability index. Unlocking of differentials at achievement of threshold value of steerability index is carried out individually, starting from differential whose locking has greater effect on steerability of wheeled vehicle.
EFFECT: enlarged range of control of traction forces on driving wheels to increase cross-country capacity and traction and speed properties at provision of required steerability of multidrive wheeled vehicles.
FIELD: transport engineering.
SUBSTANCE: invention can be used to increase cross-country capacity and stability of vehicle at braking. Proposed differential lock mechanism contains locking device in form of friction mechanism including two members 1 and 2. Friction mechanism consists of pack of friction disk 3 and steel disks 4, two control pistons 7, air feed head 8 with union 9. Members 1, 2 of clocking device are connected by pairs of gears 10, 11, 12, 13 with axle-shafts 14, 15. Device is furnished additionally with air fed control system consisting of angular velocity pickups 16, 17, electronic control unit 18, electromagnetic control valve 19, relief valve 20, change-over switch 21, connecting air lines and electric wires.
EFFECT: increased cross-country capacity and stability of vehicle.
FIELD: mechanical engineering; vehicle transmissions.
SUBSTANCE: proposed differential contains case 1, side gears 2, and 3, planet pinions and locking device. Locking devices is made in form of ring shifter 7 connected with drive 8, pushers 10 arranged inside axles 9 of planet pinions, intermediate members and locking members. Differential includes also elastic stop, and spring inserts 17 and 18 placed between case 1 and rear surfaces 20 and 21 of side gears 2 and 3. Grooves are made on end face front surfaces of side gears 2 and 3. Said grooves have wavy profile corresponding to profile of locking members, and number of radial grooves is even.
EFFECT: prevention of failure of differential lock caused by wedging of locking members between side gears, and falling out of locking members at unlocking, provision of stepless row of values of locking coefficient.
5 cl, 6 dwg
FIELD: automotive industry.
SUBSTANCE: invention can be used in differential drives of wheeled vehicles made for automatic locking of wheels. Proposed self-locking differential of vehicle contains drive case 1 accommodating axle shaft-members 4, 5 arranged coaxially to each other and coupled with axle-shafts 2, 3. Said axle-shaft members are provided with helical grooves 6, 7 on outer surface with opposite hand of helix, solids of revolution in form of balls 8 filling in line at least one closed channel 10 made in drive case. Part of said channel is opened to dip segments of balls into helical grooves. Closed channel 10 is made rectangular in longitudinal section, with rounded off outer angles 12. Cross section of legs of rectangular closed channel is equal to diameter of balls 8. Number of balls in channel is odd.
EFFECT: simplified design of differential, reduced overall dimensions, increased manufacturability, strength and efficiency at self-locking.
FIELD: transport engineering; vehicle transmissions.
SUBSTANCE: invention can be used in differential drives of vehicles with possibility of automatic wheel locking. Proposed self-locking differential of vehicle contains drive case accommodating axle-shaft members coupled with axle shafts and provided on outer surface semi-round in cross section screw grooves of opposite hand of helix, solids of revolution in form of balls filling, in chain, closed channels made in drive case and containing working grooves opened to dip ball segments into screws of axle-shaft members, longitudinal bypass channels and side return channels. Inner part of case consists of three parts. On extreme parts working grooves are made with opposite direction of helix relative to each other and to screw grooves of axle-shaft members. Middle part is made with width not exceeding diameter of balls and is furnished with through axial holes corresponding to size of diameter of balls. Angle of tilting of working and screw grooves to longitudinal axis is 74-76°. Side return channels in longitudinal section are made with sizes steplessly increasing from diameter of ball on ends of channels to 1.5 diameter of ball in central part of channels. Longitudinal bypass channels in cross section are made to size of diameter of ball, and inner side of channels is made at angle of 1-2° to center of bypass channel, with stepless transition in place of connection.
EFFECT: improved reliability and efficiency of locking.
4 cl, 3 dwg
SUBSTANCE: the self-blocking differential contains a power-driven shell with lids, in which half shaft elements are placed coaxially and connected with the half shaft. The half shaft elements, on their upper surface, have spiral channels running in a direction opposite the spiral, odd number of rolling elements (balls), one closed channel containing a working groove open for inserting ball segments into the spiral channels of the half shaft elements; a longitudinal return channel with dimensions equal to the ball diameter, connected by intermediate channels made in the lids of the power-driven shell. The outside surface of the intermediate channels in the longitudinal section has a radius equal to 1.25 diameters of the ball; and their wall, at the outlet to the zone of connection to the return channel, contains a straight section. In the lids, a slot with dimensions equal to those of the working groove is made for placement of spiral channels of the half shaft elements in the intermediate channels area.
EFFECT: increased reliability of self-blocking differential.
4 cl, 2 dwg
SUBSTANCE: the self-blocking differential contains a power-driven shell with lids, in which half shaft elements are placed coaxially and connected with the half shaft. The half shaft elements, on their external surface, have spiral grooves with a semi-circular cross-section, the direction of which is reverse to that of the spiral, rolling elements (balls) filling the closed channels in the power-driven shell, in chains. The closed channels contain working grooves open for inserting ball segments into the spiral grooves. The longitudinal bypass channels and the side return channels are formed by slots in the lids and cuts around the perimeter of the distribution washers installed on the half shaft elements. The distribution washers have a diameter equal to the working groove dimension.
EFFECT: increases reliability of self-blocking differential.
2 cl, 1 dwg