Drive axle of all-wheel-drive vehicle

FIELD: transport.

SUBSTANCE: invention refers to transportation equipment. Drive axle (1) includes crankcase (2) where main bevel gearing (3) with input shaft (5), drive gear (4) and driven gear (6) are located. Driven gear may be installed on one of mounting seats (27) or on casing (7) of symmetrical planetary differential (9) connected by sun gear (17) and carrier (12) with respective shafts (18) and (19) of wheel drives. Drive axle (1) of all-wheel-drive vehicle is made with control device (20) for differential (9) connected with carrier (12) and casing (7) of differential (9). Axles (13) are fixed in carrier (12) to avoid rotation and axis shift by check plates (36) in slots (37) of axles (13) of planetary rollers (14), (15) and in grooves (38) of part (11) of carrier (12) made as a lid.

EFFECT: simplification of construction design and enhancement of device reliability.

8 cl, 9 dwg

 

The invention relates to the field of transport engineering, namely to the driven axles four-wheel drive vehicles.

Known technical solution driving axle of the vehicle, similar to, U.S. patent No. 2005090357, IPC F16H 48/20, publication 28.04.2005, including the main bevel gear, top gear, which is performed directly on the input shaft, and a driven gear fixed to the body symmetrical bevel differential gears which are connected with the drive shafts of the wheels or with the joints of the drive wheels, and mounted on bearings in the crankcase of the bridge, and at the end of the differential housing is made of special grooves, interacts with their respective Cams, clutch, mounted on specially made slots of one of the shafts of the drive wheels. The clutch is moved by the impact of a special spring-loaded swinging fork associated with the Executive locking device, which may be an electrical solenoid.

The advantages of a specified analog should include comparative simplicity and compactness of construction of a driving axle of the vehicle.

However, due to the fact that in this technical solution, the leading axle of the vehicle is made asymmetrical (with respect to the axis of the input shaft is), so when using this bridge in the vehicle-terrain, with the transfer case (when the output shafts are laterally from the longitudinal axis of the vehicle), to ensure equal lengths of the axes and the outer hinges of the drive wheels (on each side of the differential), in the case of the use of this bridge in a vehicle with independent wheel suspension, i.e. to ensure equality on each side of the differential of the total length of those parts of the drive wheels, which are located (in the form of a driving axle in the plan) in the gap between the wheels and the inner hinges of drive wheels connected or shafts or through the flanges of the shafts of the drive wheels is connected in turn with the bevel gears of the differential, you need to install this drive axle with the same differential on different axles of the vehicle, thus, at least between the input shaft of one of the axles and the output shaft of the transfer case leads to a large misalignment, and this leads to a significant corners in the hinges connecting them cardan transmission, which degrades its performance and requires it difficult and expensive hinges, and also complicates the layout of the vehicle.

Thus, in this technical solution design of the Vedas is the future of the bridge is missing the opportunity to use this bridge, for example, on both axes, i.e. the front and rear (in the case of a two-axle four-wheel drive layout of the vehicle-terrain) without offset of the input shaft relative to each other, and especially the inability to use this bridge, for example, on the three axes, i.e. front and two rear (in the case of a three-axle all-wheel drive layout of the vehicle-terrain) without offset of the input shaft relative to each other.

In addition, the differential lock is carried out by connecting its body with one of the shafts of the drive wheels via the installed directly on the splines of the shaft coupling, and this complicates the design of the drive axle, and complicates its repair, if necessary, dismantling and installation of the drive shaft of the wheel, which is clutch.

Another disadvantage of this technical solution design driving axle of the vehicle is not sufficiently satisfactory as a differential lock, and this lock provides a rigid inclusion, i.e. sharp (smooth) the inclusion of, and only during the almost complete stop of the vehicle due to the fact that the clutch is made of a Cam and can not provide a smooth connection.

The closest-is m solution selected as a prototype, is the leading axle of the vehicle, patent WO No. 2005016683, IPC WC 23/04, publication 24.02.2005, including the main bevel gear, top gear where as analogue performed directly on the input shaft mounted on bearings in the crankcase drive axle and driven gear rigidly mounted on the two-part housing symmetric planetary differential, which is mounted in bearings in the crankcase of the leading bridge. Inside the case of symmetrical planetary differential, which made the teeth epicycle wheel, coaxially placed his drove, made of two parts, obedinennyh axes that have several pairs of the engagement between the engagement between each pair of satellites, and one of each pair of satellites meshed with the crown of the epicycle wheel of the differential housing, and the other with a freely pivotable in the differential sun wheel. With one of the parts drove through slots connected to one of the shafts of the drive wheels, while the sun gear through the slots connected to the other of the shafts of the drive wheels. The satellite axes of rotation of the parts took no fixed and moving it in the axial direction is restricted at one end of each of them about the shedding end surfaces of the recesses of one of the parts carrier (not connected to the drive shaft of the wheels), in which they are installed, and the other of their end - spacer retaining ring located on the other side were taken. That part drove, which is not connected to the shaft of the drive wheels is connected with a friction device that provides rigid connection (achieved smoothly, gently) were taken with the drive shaft of the wheels, which is connected with a sun gear. The friction device is mounted coaxially connected with a sun gear of the differential shaft of the drive wheel and has a rotating body, kinematically connected through connecting the driven gear with additional spur gear input shaft, drive axle of the vehicle for additional redistribution of torque in the differential.

The friction device has control elements, through which are connected (by impact with the command device connected to the friction device) drove to the shaft of drive wheels connected to the sun gear.

As was shown above, the differential case is made of two parts: one of which consists of two welded parts, is conditionally primary and rests with one end on the bearing support, and the other end abuts against the second part (rests without a possibility of rotation relative to the second part), inside to the ora performed epicycle wheel, and is conditionally as cover and as the main part, rests on the bearing support and rigidly connected by bolts to the main part of the differential.

The advantage of this technical solution driving axle of the vehicle (taken as a prototype) is that the connection is incomplete (when the reduced difference between the moments and velocities of the parts of the differential associated with the drive shafts of the wheels) or full (when it is fully differential lock)) drove differential and one of the shafts of the drive wheels, and hence the sun gear of the differential is connected to this shaft is smooth with some stretching time, which positively affects ergonomic and quality of the vehicle when turning on the friction device, a driving axle, and the possibility of additional torque distribution in the differential.

Along with this, this technical solution has the following disadvantages.

So, due to the fact that in this technical solution, the leading axle of the vehicle is made symmetric (with respect to the axis of the input shaft), and therefore, when using this bridge (four wheel drive) vehicle-terrain, with the transfer case located to the side of the t axis of the vehicle its output shaft, to ensure equal lengths of the axes and the outer hinges of the drive wheels (on each side of the differential), in the case of the use of this bridge in a vehicle with independent wheel suspension, i.e. to ensure equality on each side of the differential of the total length of those parts of the drive wheels, which are located (in the form of a driving axle in the plan) in the gap between the wheels and the inner hinges of drive wheels connected to the flanges of the shafts of the drive wheels, which in turn is connected with a sun gear and planet carrier, you must install this drive axle with the same differential on different axles of the vehicle on its the longitudinal axis, thereby creating a large misalignment of the input shaft with the output shaft of the transfer case, and this leads to a significant angles in the joints of the cardan gear that aggravates the cardan transmission, requires the use of sophisticated and expensive hinges, and also complicates the layout of the vehicle.

Therefore, in this technical solution design driving axle, as in the case of technical solutions counterpart, there is no possibility of using this bridge, for example, on both axes, i.e. the front and rear (in the case of biaxial layout of the vehicle-terrain) without offset in adnych shafts relative to each other, and especially the inability to use this bridge, for example, on the three axes, i.e. front and two rear (in the case of a tri-axial arrangement of the vehicle-terrain) without offset of the input shaft relative to each other.

In addition, partial differential lock, i.e. when the reduced difference between the moments and velocities of the parts of the differential associated with the drive shafts of the wheels, or full differential lock, i.e. when the difference of the torques and speeds of parts of the differential associated with the shafts of the drive wheels is equal to zero, is carried out by connecting the carrier of the differential and one of the shafts of the drive wheels, and this complicates, as in the case of analogue design drive axle (since this shaft is necessary to do additional slots connecting with a friction device to be installed on the shaft of additional elements connecting the friction device with the planet carrier of the differential and with an additional spur gear input shaft drive axle), and this complicates the design of the drive axle, and complicates its repair, if necessary, dismantling and installation of the drive shaft of the wheels, which is connected with a friction device.

The advanced design of the drive axle is complicated by the fact that the input device additional re is raspredeleniya torque differential, consisting of a sufficiently large number of parts, and this causes the need for the manufacturer to use more machines and equipment and to withstand the exact dimensions of the connections of these parts, and also causes an increase in operations at the drive axle Assembly.

Another drawback of this design of the drive axle of the vehicle is the lack of reliability and durability due to the presence in it of the friction device is sufficient wear of the friction elements, and also due to abrasion of the satellite axes differential, because they do not have a fixation against rotation.

The objective of the invention: design-drive axle-wheel drive vehicle harmonized with the possibility of its application on both axles of the vehicle - in the case of biaxial (classic) schema-wheel drive vehicles, and on all axles of the vehicle - in the case of more than two-axle diagram-wheel drive vehicle without significant displacement of the axes of the input shaft axles relative to each other in both cases, moreover, the creation of a structure of a driving axle, a more simple, reliable, durable and less material-intensive.

This task is solved in that the master bridge four-wheel transportation is bound means, including Carter, hosts the main bevel gear, top gear input shaft which is engaged with its driven gear rigidly mounted on the housing is installed on the bearings in the crankcase symmetric planetary differential, inside of which are placed coaxially made of two parts of him were taken with axes that have several pairs of satellites, the engagement between each other in each pair, one of each pair of satellites meshed with the crown of the epicycle wheel of the differential housing, and the other with a freely pivotable in the differential sun wheel, through which the spline is connected to one of the shafts of the drive wheels, while the other of the shafts of the drive wheels is connected by a splined connection with the planet carrier connected to the control device differential, which in turn is connected to another item differential,

according to the invention the differential case is made with two seats under the driven gear, main bevel gear, one of which is installed with the last location it on the drive axle in the plan for one of the two possible half-planes relative to the longitudinal axis of the input shaft main bevel gear, and the control unit differential with dinino, in addition, as with its planet carrier, with its body axis of the satellite is fixed in the driver against rotation and against axial displacement.

In the particular case, the case of the differential drive axle-wheel drive vehicle is made of two parts rigidly connected to each other.

In the particular case, one of the parts carrier differential drive axle-wheel drive vehicles made in the form of caps, privorachivaem bolted to the other main part was taken.

In the particular case, one of the seats of the differential housing axle-wheel drive vehicles under the driven gear, main bevel gear formed from one of the end flanges of the housing, designed for direct mounting to him driven gear main bevel gear and the second seat - other end flange, designed for fastening thereto driven gear main bevel gear via the optional removable flange.

In the particular case, the carrier and the differential case drive axle-wheel drive vehicle connected to respective gear unit control differential, which are made and installed in the crankcase with the ability to connect to each other via a coupling device control differential.

In the particular case, the carrier and the differential case drive axle-wheel drive vehicle is connected to the control device through respective differential spline crowns this device that are located in the crankcase with the ability to connect to each other via a coupling device control differential.

In the particular case, the axis of the satellites of the differential drive axle four-wheel vehicles registered in the driver differential rotation and against axial displacement by means of the fixing plates located in the slots of the satellite axes and the grooves of one of the parts taken.

In the particular case, each fixing plate of the satellite axes differential drive axle-wheel drive vehicle is located in the slots of the axes of the corresponding one of the pairs of satellites.

In the particular case, the clamping plate of the satellite axes differential drive axle-wheel drive vehicles are positioned in the grooves that part drove differential, which is made in the form of a cap.

A comparison of the proposed technical solutions with the level of technology on scientific, technical and patent documentation on the priority date shows that the set of essential features of the claimed solution was not previously known, therefore,it corresponds to a condition of patentability "novelty".

Analysis of the known technical solutions in this field of technology showed that the proposed solution has the features which are absent in the known solutions, and their use in the inventive combination of features gives the opportunity to learn new technical effect, therefore, the proposed solution involves an inventive step compared to the current level of technology.

The proposed solution is industrially applicable, as it can be produced industrially, workable, feasible and reproducible, therefore, meets the condition of patentability "industrial applicability".

The invention is illustrated in the drawings:

Figure 1. - axle four-wheel vehicle, a General top view (a view in plan), the first private example.

Figure 2. - kinematic diagram of the drive axle four-wheel vehicle of the first private example.

Figure 3. - separate type of differential drive axle-wheel drive vehicle is a perspective view of a first particular example.

Figure 4. - axle four-wheel vehicle, a General top view (a view in plan), the second particular example.

Figure 5. - kinematic diagram of the drive axle four-wheel vehicle of the second particular example.

6. from the preliminary view of the differential drive axle-wheel drive vehicle is a perspective view of a second particular example.

7. device control differential, partially separate.

Fig. an explosion diagram of a perspective view of the differential drive axle-wheel drive vehicle.

Fig.9. - a separate part of led (made in the form of cover) differential drive axle-wheel drive vehicle with the axes of the satellites and the locking plates of the satellite axes, in a perspective view.

Drive axle 1 wheel drive vehicle includes a crankcase 2, which houses the main bevel gear 3, the leading gear 4 of the input shaft 5 which is engaged with its driven gear 6, is rigidly fixed to the body 7 is installed on the bearings 8 in the casing 2 symmetric planetary differential 9, inside of which are placed coaxially made of two parts 10, 11 drove it 12 with the axes 13, have several pairs of satellites 14, 15, the engagement between each pair. In each pair of satellites 14, 15 one of the satellites 14 meshed with the crown of the epicycle wheel 16 of the housing 7 of the differential 9, and the other satellite 15 meshed with the freely pivotable in 9 differential sun wheel 17, which by means of the spline connection is connected to one of the shafts 18 of the drive wheels, while the other of the shafts 19 of the drive wheels is connected by a splined connection with what Odil 12.

Drive axle 1 wheel drive vehicle made with the control device 20 of the differential gear 9, which is connected with the planet carrier 12 and the housing 7 of the differential 9. In the particular case, the carrier 12 and the housing 7 of 9 differential driving axle 1 wheel drive vehicle rigidly connected with the respective slotted rims 21, 22 of the control unit 20 of the differential gear 9, which are made and installed in the crankcase 2 with the possibility of rigid connection to each other via a coupling 23 of the control device 20 differential 9 through an intermediate slotted crown 24 mounted on the splined crown 21. In particular, the control device 20 9 differential movement of the coupling 23 is provided through the plug 25 of the electric motor-gear 26.

The housing 7 of 9 differential driving axle 1 wheel drive vehicle made with two seats 27, 28 (landing sites) under the driven gear 6 main bevel gear 3, one of which is running the latest (driven gear 6) with the location on the drive axle 1 in plan (see Fig..1, 4) on one of the two possible half-planes (sides) relative to the longitudinal axis "L" of the input shaft 5.

In the particular case shown in Fig.1-3, the driven gear 6 main bevel gear 3 is installed (directly pinned bolt is MIS) on the seat 27 of the housing 7 of the differential 9, which (place 27) formed from one of the end flanges 29 of the housing 7 of the differential 9.

In the particular case shown in Fig.4-6, the driven gear 6 main bevel gear 3 is set via the optional removable flange 30 on the seat 28 of the housing 7 of the differential gear 9, which (site 28) formed the other of the end flange 31 of the housing 7 of the differential 9

The axis 13 of the satellites 14, 15 9 differential driving axle 1 wheel of the vehicle recorded in a drive rod 12 against rotation and against axial displacement.

In the particular case, the housing 7 of 9 differential driving axle 1 wheel drive vehicle is made of two parts 32, 33 are rigidly interconnected, in some cases, of the execution, as shown in the figures, by means of bolts 34.

In the particular case, one of the parts 11 led 12 9 differential driving axle 12 of the wheel of the vehicle is made in the form of a cover, privorachivaem bolts 35 to the other main part 10 led 12.

In the particular case, the axis 13 of the satellites 14, 15 9 differential driving axle 1 wheel of a vehicle registered in the driver 12 9 differential rotation and against axial displacement by means of the fixing plate 36 located in the slots 37 of the axes 13 of the satellites 14, 15 and the grooves 38 part 11 led 12, which is made in the form of a cap.

In private the beam, each fixing plate 36 of the axes 13 of the satellites 14, 15 9 differential driving axle 1 wheel drive vehicle is located in the slots 37 of the axes 13 of the corresponding one of the pairs of satellites 14, 15 (see Fig, 9).

Work driving axle of the vehicle.

Torque from the driveline is connected to the input shaft 5 of the main bevel gear 3 drive axle 1 wheel drive vehicles, and leading her gear 4 (in particular made in one piece with the input shaft 5) of the driven her gear 6, is rigidly fixed to the body 7 of the symmetric planetary differential 9.

As for the application of the inventive design of the drive axle 1, for example, on both axles of the vehicle - in the case of biaxial (classic) schema-wheel drive vehicles, and on all axles of the vehicle - in the case of more than two-axle diagram-wheel drive vehicle without offset of the input shaft 5 axles 1 relative to each other in both cases, the driven gear 6 main bevel gear 3 drive axle 1 can be installed on one of the seats 27 or 28 of the housing 7 of the differential 9.

Consider the driving axle 1 wheel of the vehicle when driven gear 6 main bevel gear 3 us who analena (directly bolted) on the seat 27 of the housing 7 of the differential 9, which (place 27) formed from one of the end flanges 29 of the housing 7 of the differential gear 9 (see Fig.1-3).

In this case, the torque from the driven gear 6 main bevel gear 3 drive axle 1 wheel of the vehicle is transmitted through the crown of the epicycle wheel 16 of the housing 7 of the differential gear 9 on the satellites 14, which depending on the driving conditions of the vehicle torque is distributed between the planet carrier 12 of the differential 9 and, through satellites 15, a sun wheel 17. With led 12 differential 9 and the sun wheel 17 redistributed torque is transmitted to the shafts 19 and 18 of the drive wheels, respectively.

For differential lock 9 drive axle 1 wheel drive vehicles under the command of the action of the driver (in particular the impact of them on the switch) triggers the control unit differential 20, the electric motor-reducer 26 which by means of the fork 25 moves the sliding sleeve 23 in the axial direction of the grooved crown 22, thereby rigidly connecting the grooved crown 22 (rigidly coupled to the housing 7 of the differential 9) and, through an intermediate slotted crown 24, the grooved crown 21 (rigidly connected to the planet carrier 12 of the differential 9), so that this leads to the differential lock 9.

Similar work is in the leading m the STU 1 four-wheel vehicle, when the driven gear 6 main bevel gear 3 is set via the optional removable flange 30 on the seat 28 of the housing 7 of the differential gear 9, which (site 28) formed the other of the end flange 31 of the housing 7 of the differential gear 9 (see figure 4-6).

Unlike the prototype, where the lock is in the master bridge 1 wheel of the vehicle is carried out by connecting the carrier of the differential gear and the axis of the drive wheel, which is connected with a sun wheel, in the inventive solution, the design of the drive axle 1 wheel drive vehicle differential lock 9 is carried out by means of a rigid coupling of the carrier 12 and the casing 7, and this simplifies the design of the drive axle 1 wheel drive vehicle and, consequently, increases its reliability, durability, and makes it less material-intensive, because you do not want to do as a prototype for more slots on one of the shafts of the drive wheels, connecting with complex friction device to be installed on the shaft of additional elements connecting the friction device with the planet carrier of the differential and additional spur gear input shaft of a driving axle.

Unlike the prototype, which has driven gear, main bevel gear drive axle of the vehicle can be us who analena on the differential case only in the half-plane of the two half-planes, the resulting longitudinal axis of the input shaft main bevel gear on the drive axle in the plan, which is a differential (i.e. from the location of the differential relative to the longitudinal axis of the input shaft main bevel gear on the drive axle in the plan), in the inventive solution, the design of the drive axle 1 wheel of the vehicle body 7 of the differential 9 is made with two seats 27 and 28 under the driven gear 6 main bevel gear 3, one of which is installed with the last location it on the drive axle 1 in the plan for one of the two possible half-planes (sides) relative to the longitudinal axis "L" input shaft 5 of the main bevel gear 3, that allows you to use the drive axle 1 wheel drive vehicle with any direction of rotation of the input shaft 5 of the main bevel gear 3, and also allows you to provide on each side of the differential is equal to the length "S" "K" axes "M", "N" and outer hinges (see figure 2, 5) drives the wheels of the drive axle 1 is connected through the inner hinges of the drive wheels with the respective shafts 18 and 19 of the latter, and can accommodate axles 1-wheel drive vehicles on different axes of the vehicle so that the axis "L" of the input shaft 5 are coaxially what. This significantly reduces the angles in the joints drive shafts, connecting bridges from the transfer case (or in the case of three and more Osney layout of the vehicle), which improves the drive shafts, the ability to apply them in a less complex and less expensive hinges, and also simplifies the layout of the vehicle.

Unlike the prototype, where the differential of a drive axle of the vehicle axis satellites rotation-parts took no fixed and only move in the axial direction is limited relative to the parts carrier, in the inventive solution structure of a driving axle 1 wheel drive vehicle axis 13 of the satellites 14, 15 fixed to a drive rod 12 against rotation and against axial displacement by means of the fixing plate 36 located in the slots 37 of the axes 13 of the satellites 14, 15 and the grooves 38 part 11 led 12, which is made in the form of a cap, connected by bolts 35 with the main part 10 led 12, that greatly simplifies the fixation device of the axes 13 of the satellites 14, 15 from rotation and axial movement in the driver 12 of the differential 9 and eliminates abrasion axis 13 in the driver 12, and this increases the reliability and durability of the differential 9 and generally drive axle 1.

Thus, the claimed design drive axle-wheel drive vehicle, about the existence of the structure of the driving axle of the prototype - allows to solve the problem and achieve the following technical result:

to create the design of a standard drive axle of the vehicle to enable the utilization of this his design on both axles of the vehicle - in the case of biaxial (classic) schema-wheel drive vehicles, and on all axles of the vehicle - in the case of more than two-axle diagram-wheel drive vehicle without significant displacement of the axes of the input shaft axles relative to each other in both cases;

to create the design of the drive axle is more simple, reliable, durable and less material-intensive.

1. Drive axle-wheel drive vehicle, comprising a crankcase, in which is placed the main bevel gear, top gear input shaft which is engaged with its driven gear rigidly mounted on the housing is installed on the bearings in the crankcase symmetric planetary differential, inside of which are placed coaxially made of two parts of him were taken with axes that have several pairs of satellites, the engagement between each other in each pair, one of each pair of satellites meshed with the crown of the epicycle wheel of the differential housing, and the other with a free center is generated in the differential sun wheel, which by the spline connected to one of the shafts of the drive wheels, while the other of the shafts of the drive wheels is connected by a splined connection with the planet carrier connected to the control device differential, which, in turn, is connected with another item differential, characterized in that the differential case is made with two seats under the driven gear, main bevel gear, one of which is installed with the last location it on the drive axle in the plan for one of the two possible half-planes relative to the longitudinal axis of the input shaft main bevel gear, and the control unit differential connected, in addition, as with its planet carrier, with its body axis of the satellite is fixed in the driver against rotation and against axial displacement.

2. Drive axle according to claim 1, characterized in that the differential case is made of two parts rigidly connected to each other.

3. Drive axle according to claim 1, characterized in that one of the parts carrier differential made in the form of caps, privorachivaem bolted to the other main part was taken.

4. Drive axle according to claim 1, characterized in that one of the seats of the differential housing under the driven gear, main bevel gear formed from one of the end flanges of the housing, the art is meant for direct mounting to him driven gear main bevel gear, and the second seat - other end flange, designed for fastening thereto driven gear main bevel gear via the optional removable flange.

5. Drive axle according to claim 1, characterized in that the carrier and the differential case connected to the control device through respective differential spline crowns this device that are located in the crankcase with the possibility of rigid connection to each other via a coupling device control differential.

6. Drive axle according to claim 1, characterized in that the axis of the satellites of the differential is fixed in its drive rod against rotation and against axial displacement by means of the fixing plates located in the slots of the satellite axes and the grooves of one of the parts taken.

7. Drive axle according to claim 6, characterized in that each fixing plate of the satellite axes of the differential is located in the slots of the axes of the corresponding one of the pairs of satellites.

8. Drive axle according to claim 6 or 3, characterized in that the locking plate of the satellite axes differential are located in the grooves of the part he had taken, which is made in the form of a cap.



 

Same patents:

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EFFECT: increased reliability of self-blocking differential.

4 cl, 2 dwg

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

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.

4 dwg

FIELD: transport mechanical engineering; miscellaneous mechanisms using electric motor with regulated output shaft.

SUBSTANCE: proposed motor provided with electromechanical gear-ratio regulator has fixed stator 1; revolving rotor 2; planetary differential whose drive carrier functions as motor frame and mounts pair of satellites 3, 4; two central wheels 5, 10; and additional rotor 15. One central wheel 5 transfers energy through shaft 9 to moving member, for instance to vehicle wheel; other central wheel 10 imparts rotary motion to additional rotor 15 inductively coupled with stator 1. Additional rotor 15 generates electric current while returning energy to motor. Force produced in the process brakes additional rotor through differential arm and re-distributes speed of central gears among differential arms.

EFFECT: ability of stepless output shaft speed variation while varying gear ratio throughout entire speed control range depending on load; enhanced efficiency, facilitated control.

1 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to motor industry. The rpm controller represents a device incorporating a planetary differential gear with driving spider (2) and two various-diameter gear wheels (5, 12). Central gear wheel (5) runs opposite to the running spider (2) to transmit engine power to output shaft (6) via the reduction gear that changes the direction of rotation. Central gear wheel (12) runs in the same direction with spider (2) to transmit rotary motion to output shaft (6) via friction clutch (13). Adjusting actuator with a controlled signal, a function of the engine shaft rpm, varies the rotary motion transmission ratio and allows accelerating or decelerating output shaft (6) along with changing the transmission ratio from its maximum to zero.

EFFECT: automatic adjustment of the engine rpm with variation of transmission ratio in transient behavior.

1 dwg

FIELD: machine building.

SUBSTANCE: wheel planetary gearbox consists of driving bevel gear (1), installed at semi-axis (2), driven bevel gear (3), installed at the axle splines (4), cone satellites (5), installed at cross pins (6). Pins (6) are installed in the mating holes of internal body (7) and external body (8). Bodies (7, 8) are mutually connected by bolts (9). A deepening for thin-wall sleeve (10) is provided at the bodies' mating location, at bodies' external surface. Sleeve (10) is installed flush to the external surface of bodies. Circular grooves are made in the deepenings of bodies (7, 8) from different side of cross pins (6). O-rings (11) are installed in the circular grooves. The internal surface of thin-wall sleeve (10) interacts with O-rings (11).

EFFECT: simplification of sealing of mated surfaces of internal and external bodies; maintaining the overall dimensions of gearbox; ensuring sufficient strength the tho gearbox.

1 dwg

FIELD: mechanic.

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

FIELD: mechanic.

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

FIELD: transport engineering; mechanical engineering.

SUBSTANCE: planetary gear driven in two-speed final drive of axle is installed in drive pinion case. Ring gear 23 is mounted on hub 24 made integral with clutch member 26 for rotation relate to hub 10 of carrier and is made for connection by clutch 27 with clutch member 32 belonging to case 14. Carrier hub 10 is constantly coupled by connecting clutch 8 with driven shaft and it is arranged coaxially to drive and driven shafts. Connecting clutch 8 has external teeth 9 engaging with teeth of clutch 27 connecting driven and drive shafts with ring gear hub. Drive shaft 15 is installed on additional bearing 17 fitted in bore 18 of driven shaft 3. Hub 24 ring gear with clutch member 26 is installed on bearing resting on carrier hub.

EFFECT: slowed down speeds, increased cross-country capacity of vehicle.

3 cl, 1 dwg

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

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.

4 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to vehicle transmission and brake system control mechanisms. According to proposed method of driving wheel slip control, center differential is locked by acting onto brakes of driving wheels and (or) changing engine torque at moment of beginning of decreasing of torque transmitted to slipping wheels accompanied by reduction of wheel rolling radius. For this purpose, differential locking device contains hydraulic lock clutch, brush unit 5, high voltage unit 6 and control system including control unit 7 and angular velocity pickup 8, torque pickup 9, linear speed pickup 10 and steering wheel turning angle pickup 11 interconnected by electric circuits. Electrorheologic liquid is used as working liquid. Clutch members are isolated from each other.

EFFECT: improved efficiency of driving wheel slipping control and operation of differential locking control system.

3 cl, 1 dwg

FIELD: automotive engineering.

SUBSTANCE: proposed driving axle reduction gear without externally controlled lock mechanism includes complex final drive with under drive and differential. Drive installed between each output gear of differential and wheel is made as overdrive, i.e. increasing speed of rotation of driving axle transmitted from differential to wheel.

EFFECT: increased cross-country capacity of vehicle.

2 dwg

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: 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

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