Automatically locking equalizing differential

FIELD: automotive industry.

SUBSTANCE: automatically locking equalizing differential comprises housing made of two members, speeder interposed between the members of the housing, and four satellites mounted on the pins of the speeder. The satellites are connected with two conical pinions mounted on the cylindrical bushings. The cylindrical bushings cooperates with the semiaxles by means of inner slots. The semiaxles are connected with the locking disk and centering springs by means of screw.

EFFECT: enhanced off-road capability.

2 dwg

 

The invention relates to transport machinery and specifically for the design of symmetric differentials of vehicles.

Known differential of the vehicle (USSR Author's certificate No. 887282, IPC WC 17/16, 1981), selected as a prototype and containing two cups of the housing, between which is sandwiched the d-pad, on thorns which includes four satellites, in turn associated with two conical gears.

The disadvantage of differential is the lack of automatic mechanical lock depending on the driving conditions, which negatively affects the maneuverability of the vehicle.

The technical result is to increase the patency of the vehicle through the automatic mechanical lock.

The technical result is achieved by the fact that the differential of the vehicle containing two cups of the housing, between which is sandwiched the d-pad, on thorns which includes four satellites, in turn associated with two conical gears, while the bevel gear mounted on a cylindrical sleeve, which by means of internal splines cooperating with the axes associated with the worm screw type with the locking disk and the centering springs arranged coaxially.

Distinctive features of the proto the IPA is in the differential vehicles bevel gear mounted on a cylindrical sleeve, which by means of internal splines cooperating with the axes associated with the worm screw type with the locking disk and the centering springs arranged coaxially.

Figure 1 shows the differential, General view; figure 2 - node of the worm screw type with the locking disk and the centering springs.

Symmetric differential of the vehicle contains two cups 10, 13 housing, between which there is a cross on the studs 3 which has four satellite 4, in turn associated with two bevel gears 5, with bevel gear mounted on the cylindrical sleeve 2, 7, which by means of internal splines cooperating with axes 1, 8 connected by a screw 9 screw-type locking disk 12 and the centering springs 11, 14, arranged coaxially.

The differential operates as follows.

In straight-line motion in good road conditions, when the traction wheel with the bearing surface of the same, the torque from the leading elements of the differential evenly distributed between axes 1, 8, ensuring their rotation with equal angular velocities. Due to the fact that the centering springs 11, 14 have the same stiffness, the block is full, the disk 12 is located between the sleeves 2, 7 at the same distance (a=b) and does not interact with them.

The increase in the angular velocity of the rotation axis 1 causes a decrease of the angular velocity axis 8. The difference between the angular velocities of rotation of the axes will contribute to the movement of the locking disk 12 in the direction of one of the couplings 2, 7 provided in the screw 9 thread one step and direction. Axial movement of the screw 9 with the locking disk 12 will result from the action of friction forces in the coupling screw-sleeve. Movement of the locking disk 12 until contact with one of the couplings 2, 7 differential. In this case, one of the centering springs 11, 14 is fully compressed and will be in the groove to prevent its destruction at the lock.

Differential lock, coming in this case, ensures the alignment of the angular velocity and torque axes. Lock detect structurally defined distances a and b, and thread pitch l. When using differential as the axis specified action to contribute to the inclusion of a full drive at slipping of the machine.

The output of the machine of rotation is accompanied by a process of alignment of the angular velocities of rotation of the axes 1, 7 and, consequently, the direction of the friction coupling coupling screw is changed to the opposite, which contributes AC is the incarnation of the locking disk 12 to the source, the neutral position. The loss of energy to friction will be offset by the elastic forces of the centering springs, the presence of a lubricant and the backlash in the worm connection.

This design provides differential automatically locks when the slip of the wheels, which improves the maneuverability of the vehicle.

The differential of the vehicle containing two cups of the housing, between which is sandwiched the d-pad, on thorns which includes four satellites, in turn, associated with the two bevel gears, characterized in that the bevel gear is installed on the cylindrical sleeves, which by means of internal splines cooperating with the axes associated with the worm screw type with the locking disk and the centering springs arranged coaxially.



 

Same patents:

FIELD: transport engineering; mechanical and hydromechanical transmissions of track vehicles with reduction gear type steering gears.

SUBSTANCE: proposed transmission of track vehicle has nonreversible gearbox 1 whose input shaft 2 is coupled with driving gear 3 of final drive 4. Driven gear 5 of final drive 4 is rigidly and coaxially installed on driving drum 6 of steering gear, being in constant meshing with driving gear 3. Four planetary three-member mechanisms are coaxially installed driving drum 6. Two similar internal planetary mechanisms with single-rim planet pinions include sun gears 7 and 8, carriers 9 and 10 and epicyclical gears 11 and 12. Carrier 9 and epicyclical gear 12 are interconnected and connected with driven shaft 13 of steering mechanism. Carrier 10 and epicyclical gear 11 are interconnected and are connected with driven shaft 14 of steering mechanism. Two similar external planetary mechanisms with two-rim planet pinions include sun gears 15 and 16, carriers 17 and 18 and epicyclical gears 19 and 20. sun gears 7 and 15 are rigidly interconnected and are connected with driving drum 6 by means of controlled friction clutch 21. Sun gears 8 and 16 are rigidly interconnected and are connected with driving drum 6 by means of controlled friction clutch 22. Sun gears 7 and 15 are furnished with controlled steering brake 23, and sun gears 8 and 16 are furnished with controlled steering brake 24. carriers 17 and 18 of external planetary mechanisms are provided with two support brakes 25 and 26. Epicyclical gears 19 and 20 of external planetary mechanisms are rigidly and coaxially secured on driving drum 6. Driven shafts 13 and 14 of steering gear are furnished with stop brakes 27 and 28 and are connected with driving wheels 31 and 32 of vehicle through track reduction units 29 and 30.

EFFECT: possibility of turning in any direction at minimum radius, simplified design of gearbox, provision of complete reversing.

1 dwg

FIELD: transport engineering; mechanical and hydromechanical transmissions of track vehicles.

SUBSTANCE: proposed transmission includes gearbox 1 connected by shaft 2 with final drive 3. Driving gear 4 of final drive 3 fitted on shaft 2 is in constant meshing with driven gear 5 of final drive and driving gear 6 of additional gear drive 7. Driving gear 6 installed for rotation on shaft 2 is in constant meshing with driven gear 8 of additional driven 7. Final drive 3 and additional drive 7 have gear ratios of equal value and sign. Driven gear 5 of final drive 3 is coaxially secured on differential carrier 9, and driven gear 8 is coaxially secured on central gear 10 of differential. Driving gears 4, 6, respectively, of final driven 3 and additional driven 7 are furnished with two two-position controlled clutches 11 and 12. Clutch 11 in right-hand position connected, and in left-hand position disconnects driving gear 4 and driven shaft 2. Clutch 12 in right-hand position disconnects and in left-hand position connects driving gear 6 with drive shaft 2. Transmission with steering gear depicted in Fig. 1 is provided with second central gear 13 in three-member differential and several groups of air planet pinions 14 installed on carrier 9. Gears 10 13 are provided with brakes 15, 16 and they connected by means of driven shafts 17 and 18 of steering gear with driving wheels 12, 22 of vehicle through track reduction units 19, 20. Transmission depicted on Fig. 2 is provided with second central gear 13 in five-member differential, brakes 15, 16 being stop and turn brakes, two central gears 23, 24 connected by means of driven shafts 17, 18 of track reduction units 19 20 with driving wheels 21, 22 of vehicle and several groups of two-rim planet pinions 14 installed on carrier 9.

EFFECT: provision of turning in any direction at minimum radius and reliable parking braking.

2 dwg

Angle gear drive // 2281862

FIELD: transport engineering.

SUBSTANCE: invention can be used at designing of angle gear drives of drive axles with rigid suspension of wheels, for instance, buses or trolleybuses. Proposed angle gear drive has case 1 with oil reservoir. Driving wheel 7 is installed bearings inside cup 10 rigidly coupled with body. Cover 18 with sealing member 19 is secured on flange of cup 10. Oil deflector 11 is installed between bearings of driving wheel 7 oil collector is made in form of space 14 on inner surface of body 2 and is coupled with through holes in cup 10. Oil holes 21 are symmetrical relative to horizontal plane passing through axle of driving wheel 7 at distance not exceeding inner radius of outer race of front bearing 9 of driving wheel 7.

EFFECT: increased service life of bearing units of drive axle angle drive driving wheel and enlarged operating capabilities.

3 dwg

FIELD: transport and agricultural engineering.

SUBSTANCE: proposed driving axle has housing, drive shaft, final drive in form of drive pinion and driven gear, differential case central hole fitted on bearings in housing and rigidly connected with driven gear, two driven shafts with screw thread, member movably connecting driven shafts by meshing with screw thread through solids of revolution and passing through central hole of differential case coaxially with case for axial displacement in said hole, and springs. Cavities, for instance, semi-spherical ones, are made in central cylindrical hole of differential case. Connecting member is made in form of cylindrical bushing on outer surface of which longitudinal grooves are made, for instance, with semispherical bottom, parallel to its axis, and on ends of inner surface cavities are made, for instance, semispherical ones. Ends of driven shafts from side of differential case are provided with outer thread and are installed in bushing for rotation. Bushing can be displacement both relative to differential case by means of solids of revolution, for instance, balls installed by one half in cavities of inner cylindrical surface of differential case and by other half, in longitudinal outer grooves of bushing and relative to driven shafts, by means of solids of revolution, for instance, balls installed in cavities of bushing and contacting with thread of driven shafts. Driven shafts are provided with stops to limit travel of bushing along driven shaft made, for instance, in form of beads on shafts and coil springs placed between beads and end faces of bushing. Cavities are made on end faces of driven shafts arranged inside differential case in which solids of revolution, for instance, balls are fitted.

EFFECT: simplified design, operation and repair of driving axle improved efficiency of its operation.

3 cl, 3 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed self-controlled automatic clutch has two outer clutch members and one inner clutch member with two rows of sprockets, locking disk with projections and cups for springs arranged between sprockets and installed for displacement through definite angle relative to inner clutch member, springs and rollers arranged in pairs in wedge-like slots formed between outer clutch member and sprockets. Rollers of one row are installed for engagement with rollers of other row through locking disk to change functions of driving and driven clutch members depending on direction of load. Invention provides distribution of torque between driving axles and driving wheels allowing different rpms of wheels at cornering and when running along rough roads and instantaneous locking and releasing of axles and wheels without assistance of driver.

EFFECT: increased cross country capacity of automobile and stability against skidding.

2 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: cam-conical differential comprises housing (1), pinion (2) of the differential, carrier (3) with conical satellites (4), two conical differential gears (5), and two braking mechanisms (6). Braking mechanisms (6) are composed of two cylinders (7) and (8). One face of cylinders (7) and (8) has three expansion cams (9), and the other face is flat. Three stop projections (10) are made over periphery of the cylinders of braking mechanisms (6). The cylinders arrest angular rotation and are arranged at an angle of 120° over the periphery of the cylinder. Cylinder (7) of each braking mechanism (6) is rigidly connected with housing (1) of the differential. The smooth face of second cylinder (8) is provided with friction coating (11) that slides over the rim of the differential gear. The expansion cams of the cylinders face each other.

EFFECT: expanded functional capabilities.

2 dwg

FIELD: mechanical engineering; road vehicles.

SUBSTANCE: propose antilock system contains control device, remote controlled engine, transmission with driving wheels including clutch, gearbox, propeller shaft, final and differential drives, and vehicle wheels furnished with tachometers. Transmission contains at least two pairs of driving wheels. Gearbox is remote controlled by control device. Interaxle differential is connected to gearbox. Final and differential drives of all driving pairs of wheels remote controlled by control device are connected to interaxle differential, and steerable pairs of wheels are furnished with wheel angular position pickup connected to control device. Control device is made for setting additional pairs of wheels into active state in case of slipping or locking of one of wheels belonging to active pair.

EFFECT: possibility of regeneration of braking energy, increased cross-country capacity of vehicle, possibility of changing over of driving pairs of wheels of vehicle.

1 dwg

FIELD: transport engineering.

SUBSTANCE: proposed wheel has rim of regular shape and center of rotation. To drive the wheel, planetary reduction gear is fitted in wheel rim whose drive gear is planet pinion installed on driving "floating shaft whose axis, taking weight of vehicle applied to wheel, executes complex movement relative to axis of wheel rotation making it possible to: 1) spread projections of axis of rotation (being simultaneously point/line of support) of wheel and point of application of vehicle weight P to wheel on horizontal surface by some distance L; 2) change position of projection of point P on vertical; plane by some height h and provide constantly acting "canting" torque PL on wheel creating effect of eccentric wheel at wheel circumference remaining unchanged and eliminating cyclic loads.

EFFECT: improved cross-country capacity of vehicle, its steerability, efficiency of wheeled propulsor, simplified design.

1 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: differential comprises housing (1) with spider (2) and satellites (3), differential gears (4) and (5), locking hydraulic clutch, planet gear, and control system. The locking hydraulic clutch has housing (6) provided with driving friction disks (7) and driven friction disks (8) connected with housing (1). The control system comprises control unit (14), electric motor (15), pickups (16) of angular velocity, pickups (17) of torque, pickups (18) of linear velocity, and pickups (19) of angle of rotation of the steering wheel. The planet gear has carrier (12) provided with two rows of satellites (10) and (11), solar gear (13), and epicycloid gear (9). Solar gear (13) is connected with one of the differential gears (9), carrier (12) is connected with electric motor (15), and epicycloid gear (9) is connected with housing (6).

EFFECT: enhanced efficiency.

1 dwg

FIELD: the invention refers to transport machinery.

SUBSTANCE: latching differential has a differential gear 4, a blocker and a control device. The control device has a scheme of measuring and comparison and sensors of a wheels angular speed in the shape of tachometers 11 and 12, kinematically connected with half-axles 9 and 10. The scheme of measuring and comparison includes differential links 13 and 14 and summing units 15 and 16 of angular accelerations, and an electro-chain of connection to a servo-motor 22 has intensifiers 19 and 20 and a relay of time 21. Differential links 13 and 14 are electrically connected with the sensors of wheels angular speeds. The differential realizes automatic blocking only at skidding of any driving wheel and does not react to other exterior disturbing influences. The control device works on the principle of comparison of an angular speeding up of a skidding wheel with given critical meaning equal to maximum possible speeding up at which skidding is still impossible.

EFFECT: decreasing of dynamic loads on transmission and drive and increasing reliability and longevity of a vehicle.

1 dwg

FIELD: transport engineering; transmissions of wheeled vehicles.

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

Final drive // 2247038

FIELD: transport engineering.

SUBSTANCE: proposed final drive contains housing with oil reservoir, driven bevel gear and driving bevel gear with front and rear taper bearings whose outer races are press-fitted in bearing cup, and oil collecting pocket. Holes to let oil in and out are made in housing and bearing cup. Plate-type oil slinger with hole in central part is installed in cup between bearings. Diameter of slinger hole is less than inner diameter of front bearing outer race.

EFFECT: improved efficiency of lubrication of bearing of final drive driving gear.

FIELD: transport engineering; automobiles, tractors, diesel locomotives.

SUBSTANCE: proposed vehicle stepless transmission contains final drive, differential 4 and step-up drive, brake device 13, overrunning clutch 21, damper 22 and regulator 14. Driven gear 3 of final drive is rigidly engaged with case of differential 4. Differential gears 6, 8 are engaged with driven shafts 7, 9. Shaft 7 transmits torque to drive wheels (tracks, screw, etc). Shaft 9 sets brake device 13 into motion through step-up drive. Overrunning clutch 21 and damper 22 are fitted on shaft of brake device 13.

EFFECT: reduced losses of torque, prevention of shock loads.

2 cl, 1 dwg

FIELD: the invention refers to transport machinery.

SUBSTANCE: latching differential has a differential gear 4, a blocker and a control device. The control device has a scheme of measuring and comparison and sensors of a wheels angular speed in the shape of tachometers 11 and 12, kinematically connected with half-axles 9 and 10. The scheme of measuring and comparison includes differential links 13 and 14 and summing units 15 and 16 of angular accelerations, and an electro-chain of connection to a servo-motor 22 has intensifiers 19 and 20 and a relay of time 21. Differential links 13 and 14 are electrically connected with the sensors of wheels angular speeds. The differential realizes automatic blocking only at skidding of any driving wheel and does not react to other exterior disturbing influences. The control device works on the principle of comparison of an angular speeding up of a skidding wheel with given critical meaning equal to maximum possible speeding up at which skidding is still impossible.

EFFECT: decreasing of dynamic loads on transmission and drive and increasing reliability and longevity of a vehicle.

1 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: differential comprises housing (1) with spider (2) and satellites (3), differential gears (4) and (5), locking hydraulic clutch, planet gear, and control system. The locking hydraulic clutch has housing (6) provided with driving friction disks (7) and driven friction disks (8) connected with housing (1). The control system comprises control unit (14), electric motor (15), pickups (16) of angular velocity, pickups (17) of torque, pickups (18) of linear velocity, and pickups (19) of angle of rotation of the steering wheel. The planet gear has carrier (12) provided with two rows of satellites (10) and (11), solar gear (13), and epicycloid gear (9). Solar gear (13) is connected with one of the differential gears (9), carrier (12) is connected with electric motor (15), and epicycloid gear (9) is connected with housing (6).

EFFECT: enhanced efficiency.

1 dwg

FIELD: transport engineering.

SUBSTANCE: proposed wheel has rim of regular shape and center of rotation. To drive the wheel, planetary reduction gear is fitted in wheel rim whose drive gear is planet pinion installed on driving "floating shaft whose axis, taking weight of vehicle applied to wheel, executes complex movement relative to axis of wheel rotation making it possible to: 1) spread projections of axis of rotation (being simultaneously point/line of support) of wheel and point of application of vehicle weight P to wheel on horizontal surface by some distance L; 2) change position of projection of point P on vertical; plane by some height h and provide constantly acting "canting" torque PL on wheel creating effect of eccentric wheel at wheel circumference remaining unchanged and eliminating cyclic loads.

EFFECT: improved cross-country capacity of vehicle, its steerability, efficiency of wheeled propulsor, simplified design.

1 dwg

FIELD: mechanical engineering; road vehicles.

SUBSTANCE: propose antilock system contains control device, remote controlled engine, transmission with driving wheels including clutch, gearbox, propeller shaft, final and differential drives, and vehicle wheels furnished with tachometers. Transmission contains at least two pairs of driving wheels. Gearbox is remote controlled by control device. Interaxle differential is connected to gearbox. Final and differential drives of all driving pairs of wheels remote controlled by control device are connected to interaxle differential, and steerable pairs of wheels are furnished with wheel angular position pickup connected to control device. Control device is made for setting additional pairs of wheels into active state in case of slipping or locking of one of wheels belonging to active pair.

EFFECT: possibility of regeneration of braking energy, increased cross-country capacity of vehicle, possibility of changing over of driving pairs of wheels of vehicle.

1 dwg

FIELD: transport mechanical engineering.

SUBSTANCE: cam-conical differential comprises housing (1), pinion (2) of the differential, carrier (3) with conical satellites (4), two conical differential gears (5), and two braking mechanisms (6). Braking mechanisms (6) are composed of two cylinders (7) and (8). One face of cylinders (7) and (8) has three expansion cams (9), and the other face is flat. Three stop projections (10) are made over periphery of the cylinders of braking mechanisms (6). The cylinders arrest angular rotation and are arranged at an angle of 120° over the periphery of the cylinder. Cylinder (7) of each braking mechanism (6) is rigidly connected with housing (1) of the differential. The smooth face of second cylinder (8) is provided with friction coating (11) that slides over the rim of the differential gear. The expansion cams of the cylinders face each other.

EFFECT: expanded functional capabilities.

2 dwg

FIELD: mechanical engineering.

SUBSTANCE: proposed self-controlled automatic clutch has two outer clutch members and one inner clutch member with two rows of sprockets, locking disk with projections and cups for springs arranged between sprockets and installed for displacement through definite angle relative to inner clutch member, springs and rollers arranged in pairs in wedge-like slots formed between outer clutch member and sprockets. Rollers of one row are installed for engagement with rollers of other row through locking disk to change functions of driving and driven clutch members depending on direction of load. Invention provides distribution of torque between driving axles and driving wheels allowing different rpms of wheels at cornering and when running along rough roads and instantaneous locking and releasing of axles and wheels without assistance of driver.

EFFECT: increased cross country capacity of automobile and stability against skidding.

2 dwg

FIELD: transport and agricultural engineering.

SUBSTANCE: proposed driving axle has housing, drive shaft, final drive in form of drive pinion and driven gear, differential case central hole fitted on bearings in housing and rigidly connected with driven gear, two driven shafts with screw thread, member movably connecting driven shafts by meshing with screw thread through solids of revolution and passing through central hole of differential case coaxially with case for axial displacement in said hole, and springs. Cavities, for instance, semi-spherical ones, are made in central cylindrical hole of differential case. Connecting member is made in form of cylindrical bushing on outer surface of which longitudinal grooves are made, for instance, with semispherical bottom, parallel to its axis, and on ends of inner surface cavities are made, for instance, semispherical ones. Ends of driven shafts from side of differential case are provided with outer thread and are installed in bushing for rotation. Bushing can be displacement both relative to differential case by means of solids of revolution, for instance, balls installed by one half in cavities of inner cylindrical surface of differential case and by other half, in longitudinal outer grooves of bushing and relative to driven shafts, by means of solids of revolution, for instance, balls installed in cavities of bushing and contacting with thread of driven shafts. Driven shafts are provided with stops to limit travel of bushing along driven shaft made, for instance, in form of beads on shafts and coil springs placed between beads and end faces of bushing. Cavities are made on end faces of driven shafts arranged inside differential case in which solids of revolution, for instance, balls are fitted.

EFFECT: simplified design, operation and repair of driving axle improved efficiency of its operation.

3 cl, 3 dwg

FIELD: automotive industry.

SUBSTANCE: automatically locking equalizing differential comprises housing made of two members, speeder interposed between the members of the housing, and four satellites mounted on the pins of the speeder. The satellites are connected with two conical pinions mounted on the cylindrical bushings. The cylindrical bushings cooperates with the semiaxles by means of inner slots. The semiaxles are connected with the locking disk and centering springs by means of screw.

EFFECT: enhanced off-road capability.

2 dwg

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