Vehicle differential with automatic locking of drive wheels

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.

5 dwg

 

The invention relates to transport machinery.

The invention improves the reliability, throughput and traffic safety of vehicles in complex environments by automatically locking wheels and axles.

The invention can be applied in cross-axle and inter-axle differentials, and structurally it can be adapted in the crankcases axles and transfer boxes (the Carter center differential) existing vehicles.

Known self-locking differential, containing the leading case, bevel differential gear with two pausetime gears located on the respective axes, locking device, representing the auxiliary and power mechanism of free running (see the description of the invention to the author's certificate of the USSR No. 566045, IPC F 16 N 1/44 60 To 17/20, publication 17.10.1977 year).

The disadvantage of this differential is the complexity of its design and lack of reliability.

Known self-locking differential, containing the leading case with fixed therein by a washer mounted with axial mobility of the sleeve with internal splines for connection with axes having on the outer surface of the Cam clutch for engagement with the casing, rollers disposed between the washer and W is Lomi in separate cages, kinematically connected by means of a device limit their relative rotation in the form of pins, are placed in the slots of the plates, the ends of which are connected with separators (see the description of the invention to the author's certificate of the USSR No. 1437259, IPC 60 To 17/20, publication 15.11.1988 year).

The disadvantage of this differential is the complexity of its design and lack of reliability.

Known differential of a vehicle with an automatic locking wheels, containing a hollow lead body, inside of which is coaxially mounted shafts wheels, separators with rollers and separators made cylindrical in form of glasses and are connected to bottom portions of the above-mentioned glasses with the possibility of angular displacement in mutually opposite directions on the inner surface of the lead body and axes made teeth, and separators drive rollers in the mechanism (see the description of the author's certificate No. 1288404, SU 1763761 A1, F 16 N 1/38, 1/32, publication 23.09.1992 year).

The disadvantage of this known differential, taken as a prototype, is the complexity of its design and lack of reliability.

The objectives of the claimed invention are:

- increased reliability, maneuverability, and safety of the vehicle;

- cost minimization p and a possible technical implementation.

The essence of the invention lies in the fact that the differential of a vehicle with an automatic locking wheels, containing a hollow lead body, inside of which is coaxially mounted shafts wheels on the driven sleeves and separators with rollers, with the possibility of angular displacement in mutually opposite directions and controlling the movement of rollers:

the leading case is a cylindrical sleeve, the inner surface of which is a longitudinal becoming jammed depression for placement of rollers;

is coaxially installed in the separators on a sliding landing driven sleeve, performed on the inner surface of the slots for connection with the axes of drive wheels;

- separators - hollow cylinders performed on the surface of the rectangular holes on the number of longitudinal becoming jammed depressions for accommodating rollers;

on the end surfaces of the separators are made of at least one groove on the end surface of one separator and the hole, with a fixed pin on the end surface of the other separator, with the pin of one of the separator enters the groove of the other, forming a movable element for angular displacement of the separators in the opposite directions is limited by the width of the groove and the diameter of the pin;

each roller ineach depression has the ability to move the driven sleeve from becoming jammed one position to another.

The invention is illustrated by drawings (one of possible variants of a design differential), where:

figure 1 is a Longitudinal section of a differential;

figure 2 - Cross section differential (Type a-A);

figure 3 - Separators (side View);

4 is a Cross section separators (View b-B);

5 is a diagram of the interaction of the elements of the differential (simplified);

position 1 is the Leading body;

2 - Longitudinal becoming jammed depression;

3, 4 is Driven sleeve;

5, 6 Clips;

pos.7, 8 - Separators;

position 9 - Rectangular holes;

10 - Groove;

pos.11 - Pin;

pos.12 - Flange of the lead body;

pot, 14 - Lateral flanges of the lead body;

POS, II - becoming jammed position of the roller in the longitudinal becoming jammed depression;

angle α - the Angle between becoming jammed by the provisions of the roller becoming jammed in the longitudinal cavity;

angle β - the Maximum angle of displacement of the separators in mutually opposite directions.

The differential of a vehicle with an automatic locking wheels contains a leading housing 1. Inside the leading of the housing 1 coaxially mounted led bushings 3, 4 in the separators 7, 8 with the rollers 5, 6.

Leading the housing 1 is a cylindrical sleeve, is made on the inner surface of the longitudinal becoming jammed cavities 2 for placement of the rollers 5, 6.

Led W is the CTL 3, 4 cylindrical, made on the inner surface of the slots to connect with axes wheels, coaxially mounted in the separators on a sliding landing.

The rollers 5, 6 is cylindrical.

The separators 7, 8 - hollow cylinders, performed on the surface of the rectangular holes 9 (Fig 3) the number of longitudinal becoming jammed troughs 2 to accommodate the rollers 5, 6.

Each separator 7 (8) driven sleeve 3 (4) inside, having a sliding fit with her, and rollers 5 (6) in the rectangular hole 9 is installed in the host body 1 so that the rollers 5 (6) placed in the hollows 2.

Each roller 5 (6) in each cavity 2 can be moved across the driven sleeve 3 (4) from becoming jammed one position I (figure 5) other II (figure 5) on the corner α (figure 5).

On the end surfaces of the separators 7 and 8 are made of at least one groove 10 (Fig 3, 4, 5), on one, and the opening in which is fixed a pin 11 (Fig 3, 4, 5), on the other. The separators 7 and 8 mated to each other so that the pin 11 of one of the separator is in the groove 10 of the other, forming a movable element with the possibility of angular displacement of the separators 7 and 8 in opposite directions is limited by the width of the groove 10 and the diameter of the pin 11, on the corner β (figure 5).

The operating condition of the differential automatic locking wheels - maximum angle, re is edenia in mutually opposite directions separators 7 and 8 with the rollers 5 and 6 (figure 5) (angle β 5 ) must be less than the angle between the opposite becoming jammed by the provisions of the roller I-II (figure 5) in the longitudinal becoming jammed trench 2 (figure 5) (angle α figure 5).

The differential of a vehicle with an automatic locking wheels works as follows.

Each of the driven sleeve 3 (4) with the separator 7 (8), and the rollers 5 (6) in the host body 1 can be viewed as a two-way freewheel. The transmission of torque between the drive housing 1 to the slave sleeves 3, 4 is carried out while rotating the lead body 1 in the forward and reverse direction.

Rectilinear motion:

- with the start of rotation of the lead body 1, the rollers 5, 6 will fall into the wrong part of the longitudinal becoming jammed depressions 2 and will jam the leading case 1 with slave bushings 3, 4, which will begin to rotate with the angular speed of the leading housing 1, the torque is transmitted from the host body 1 on both the driven sleeve 3, and 4 (automatic locking of the master chassis and the slave bushings);

- with the start of rotation of the driven sleeves 3, 4 separators 7, 8 with the rollers 5, 6 will begin to move in the direction of rotation of the sleeves, so as to have a sliding fit with them, the rollers 5, 6 will fall into the wrong part of the longitudinal becoming jammed depressions 2 and will jam the leading case 1 with slave sleeves 3, 4 (automatic locking of the leading housing and driven wut is OK) - “engine braking”.

In the opposite direction of rotation, the process is similar.

Straight-line processes are both guided by the bushings synchronously.

Curvilinear motion, motion on a rough road:

led bushings 3, 4 will rotate with different angular velocities (to rotate in mutually opposite directions). In this case, the driven sleeve 3, 4 separators 7, 8, and rollers 5, 6 can be moved in mutually opposite directions at an angle α (5)will be jamming (for example) of the rollers 5 and lock the driven sleeve 3 with a leading housing 1 in position I (figure 5), the rollers 6 and lock the driven sleeve 4 with a leading housing 1 in position II (figure 5). To eliminate this - “...the pin 11 of one of the separator is in the groove 10 of the other, forming a movable element with the possibility of angular displacement of the separators in the opposite directions is limited by the width of the groove 10 and the diameter of the pin 11...”, i.e. the separators 7, 8 placed in them by the rollers 5, 6 can be moved in mutually opposite directions at an angle βand as the angle β less angle α, the rollers 5 and 6 at the same time in these provisions could not be, and can take the position, for example 5 and 6 (figure 5) - the rollers 5 in the jammed position, led the sleeve 3 interlocked with in the future housing 1, the torque is transmitted from the host body 1 on the driven sleeve 3, the rollers 6 in an intermediate position in the longitudinal becoming jammed the cavity 2, a driven sleeve 4 rotates freely.

Example:

from the provisions of the rectilinear motion - both driven sleeve 3,4 interlocked with a leading housing 1, rotating at the same speed, the torque is transmitted on both sleeves - when entering the curvilinear section (driving on rough roads) the angular velocity of one of the slave bushings increases, for example driven sleeve 4, it drags the separator 8 with rollers 6, which go from jamming becoming jammed in the longitudinal cavity 2 and is moved in the direction of rotation of the driven sleeve 4 only on the angle βas the stall force of the roller 5 between the cavity 2 and the driven sleeve 3 more forces of sliding friction of the separator 8, the rollers 6 and driven sleeve 4 is driven sleeve 4 rotates freely, the torque is transmitted only on the driven sleeve 3, to align the angular velocities of the situation was restored;

- from “engine braking” when curvilinear movement unlocks the slave sleeve with a smaller angular velocity.

Movement in difficult road conditions (slope, the slipping wheels) - both leading wheels rotate with the same angular speed, the automatic is key interlocked with the lead frame via the driven sleeve - the torque is transmitted to both the leading wheels.

The claimed invention allows to:

to improve reliability, maneuverability and safety of the vehicle due to the simplicity of design, ease of interaction of all its elements, the implementation of automatic process lock wheels, transmission and distribution of torque;

to minimize the costs when possible technical implementation due to its simplicity, adaptability differential in the crankcases axles and transfer boxes (center differential) existing vehicles without any modifications.

The differential of a vehicle with an automatic locking wheels, containing a hollow lead body, inside of which is coaxially mounted shafts wheels and separators with rollers, with the possibility of angular displacement in mutually opposite directions and controlling the movement of the rollers, characterized in that it is provided with a coaxially mounted in the separators on a sliding landing slave bushings performed on the inner surface of the slots for connection with the axes of drive wheels, while the leading case is made in the form of a cylindrical sleeve, the inner surface of which is a longitudinal becoming jammed vPad the us to accommodate the rollers, the separators are made in the form of a hollow cylinder, the surface of which is made of rectangular openings on the number of longitudinal becoming jammed depressions to accommodate the rollers, and on the end surfaces of the separators are made of at least one groove on the end surface of one separator and the hole is rigidly mounted therein a pin on the end surface of the other separator, with the pin of one of the separator enters the groove of the other, forming a movable element for angular displacement of the separators in the opposite directions is limited by the width of the groove and the diameter of the pin, and each roller in each depression has the ability to move the driven sleeve from becoming jammed one position in more.



 

Same patents:

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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.

5 dwg

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5 dwg

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EFFECT: improved reliability, roadability and safety of vehicle.

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16 cl, 5 dwg, 1 tbl

Muscular drive // 2270780

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1 dwg

FIELD: mechanical engineering.

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1 dwg

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.

2 dwg

FIELD: mechanical engineering; vehicle transmissions.

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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.

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4 dwg

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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

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