Bevel gear

FIELD: transport.

SUBSTANCE: bevel gear contains casing (1) with opposite axle shaft gears (2, 3) axis of channel whereof forms acute angle with casing rotation axis of channel. On differential pinion axis (6) collets (10) are installed capable of shift along axis. Pinions (4, 5) engage with collets and penetrating into narrowed zone located between axle shaft gears are seized transmitting torque to stopped axle shaft gear and stopping slippage.

EFFECT: increase of bevel gear slippage properties.

5 dwg

 

The invention relates to avtotraktorodrom and can be used in wheel drive front-wheel drive trucks and tractors with both axial and independent suspension.

Known self-locking differential, comprising a housing and coaxially located half-shaft gear with them in engagement satellites, mounted fixed in the housing axis, and the cone of the ring gear each satellite above and below is limited by planes arranged at an angle to the plane perpendicular to the axis of rotation of the satellites, and the satellites are put into engagement with the corresponding pausetime gears at the same distance from the axis of rotation of the latter (see avts of the USSR № 1521625, CL VC 17/20,1989).

The disadvantages of this differential is a limited blocking properties, due to the limits of the ripple magnitude, which is implemented with ripple, torque, so for example, if one of the wheels of the vehicle will be on ice, the amount of torque that is implemented by this wheel, will go beyond the capabilities of the differential and the wheel will continue to slip with pulsating speed.

The closest to the proposed device to the technical essence and the achieved effect is tapered differential selected as the prototype (see RF patent № 2007303, CL VC 17/20,1994), comprising a housing with opposed spaced pausetime gears and being with them in engagement satellites set to fixed in the housing axis and the geometric axes of the gears are placed in the housing of the differential angle of 15...30' to the geometric axis of rotation of the housing and the spring-loaded satellites relative to the body.

The disadvantages of the prototype are limited efforts springs inhibitory properties that are passed to the satellite, located in the narrowed area between pausetime gears.

The aim of the invention is to increase the blocking properties of the differential.

This objective is achieved in that the conical differential, comprising a housing with opposed spaced pausetime gears, the geometrical axis of which are with the geometric axis of rotation of the housing is an acute angle, satellites, spring-loaded relative to the housing, mounted on the axis is locked from rotation, while the satellites are placed on the Tsang interoperable Tsang with the axis.

The interaction of the satellite with collets, and the last axis is locked from rotation relative to the housing, allows the satellite passing through the narrowed area between pausetime gears, to move the collet along it, thereby compress the collet, which, covering nevra audouze axis and interacting with the satellite, slow down its rotation around its axis and will transmit torque stop the wheel, i.e. stop the slipping.

The above attributes make the proposed device from the prototype and determine its compliance with the criteria of "novelty" and "positive effect".

The sign of "the satellites are placed on the Tsang interoperable Tsang axis is unknown, therefore, the entire set of signs has the criterion of "significant differences".

1 shows a conical differential incision along the axis of the satellites; figure 2 - Tsang in axonometric projection; figure 3 - the relative movement between the elements of the differential mechanism when passing a vehicle curved section of the road; figure 4 - interaction of elements of the differential when the vehicle is on the direct road; figure 5 shows variations of the locking axis satellites.

Bevel differential includes a housing 1, a half-shaft gears 2 and 3, the satellites 4 and 5, mounted on the axis 6 and spring-loaded Poppet spring 7. In the housing 1 in jacks of the installed sleeve 8 half-shaft gears and the ring 9. On the axis 6 posted by collet 10 is restricted from axial movement by the ring 11. The locking of the satellite axes of rotation around its axis can be carried out, for example, the pilot is advised screws according to GOST 1476 - 84,1477 - 84 and 1478 - 84, for example pressure cut-in screw 12 (figure 5,a); mortise screw with cylindrical shank (figure 5, b); papovavirus connection (figure 5, b); and mortise screw conical (figure 5, g).

Nests under the sleeve 8 in the housing 1 is processed in such a way that the geometrical axis of the gears relative to the geometric axis of rotation of the housing form an angular offset, Δ within 15 to 30'. Thus the distance between the axes of the gears L and L' are interconnected according to L>L'.

The differential operates as follows.

In straight-line motion of the vehicle (see figure 4) the differential case 1 and the satellites 4 and 5 have the same angular velocity equal to C, and satellite 5, is in the area of size L'. When passing through this zone, the satellite was moved along the axis 6, its inner conical surface squeezed the collet 10, which was jammed on the axis 6. The spring 7 is compressed. Satellite 5, as well as the satellite 4, passes both Pelusium the gears one angular velocity, i.e. pattern occurs with=a=q, and the vehicle each wheel is a part of the path per unit of time, equal to h"=h."'

When you hit one of the wheels on the road with less friction relative to the wheel, which is linked with the road better, this wheel gets the entire torque from the differential housing and the wheel with a large grip stops. Begins the so-called slipping, in which satellites obkatyvalisj staying on gear. But in the proposed device, this is not the case, because the satellite, such as satellite 5, may not pass the area of L' - jams, moving along the collet compresses the spring 7 and, dragging the rotation of staying half-shaft gear, stops slipping.

When the vehicle along a curved trajectory (see figure 3), for example when entering a left turn, half-shaft gear 3 becomes a runner, its angular velocity d is equal to the angular velocity of the right wheel q, and thus tends to rotate relative to the housing 1 of the differential rotates at a certain angle satellites 4 and 5, and those, in turn, will rotate the half-shaft gear 2 in the reverse direction relative to the gear 3, which helps to release blocked the satellite from a narrow zone L', the spring 7 removes the satellite with collets and are formed clearances: α - mechanical backlash; β - axial clearance, i.e. the differential is unlocked.

At the same time (instantaneous) angular velocity f, d and b are directed in opposite directions, and the angular velocity of the left wheel and polovoy gear h and b is less than the angular velocity of the right wheel and polovoy gear, i.e. there is a dependence h=b<d=q when h<h'.

Thus, the process is responsive the Oia curved road segment the vehicle is unlocked when the differential, that reduces the load of the drive units and wheels. The differential remains locked when you hit one of the wheels in the worst coupling conditions and provides increased permeability, and is unlocked only when the kinematic misalignment angular velocity of rotation of the wheels when turning and when the movement of the vehicle over rough roads, in which the angular velocity wheels also resolutory.

The proposed device is compared with the prototype makes better use of the blocking properties of the differential, since the collet is locked differential additionally slow down the rotation of the satellite around its axis, involving the movement stopped half-shaft gear, i.e. interrupting the slipping wheel receiving the entire torque from the body.

The disadvantages of the device include the following.

Gaps αand β practically can have values from 0 to a few tenths of a millimeter, so the efficiency of the device depends on a combination of interrelated parameters: tollini ring 9, the location along the axis of the ring 11, the stiffness of the spring 7, the angle of the conical surface of the collet 10 and related internal surface of the satellite, as well as the value of the angle Δ. All these p the parameters practically amenable to change within, ensuring the reliability and operability of the mechanism of bevel differential.

Bevel differential, comprising a housing with opposed spaced pausetime gears, the geometrical axis of which are with the geometric axis of rotation of the housing is an acute angle, and being with them in engagement satellites, spring-loaded relative to the housing and mounted on the axis is locked from rotation, characterized in that the satellites are placed on the Tsang interoperable Tsang with the axis.



 

Same patents:

FIELD: machine building.

SUBSTANCE: invention relates to transport machine building, in particular, to automotive and tractor driving axles. The self-locking differential incorporates housing (2), driven gear wheel (1), output half-axles (7), two free travel mechanisms, driving gear coupling (4) with end face trapezoidal teeth and two driven half-couplings with the like teeth rigidly coupled with the free travel mechanism driven cages (6). Gear coupling (4) with the end face trapezoidal teeth is linked with housing (2) to axially move. The distance along the axis between the tooth crests of one and the tooth space of the other driven half-coupling equals the axial distance between the driving coupling (4) crests. The number of end face teeth of each half-coupling is a multiple of the number of locking bodies (8) of the free travel mechanisms. Both such mechanisms are arranged so that, on cutting in, the driven half-coupling crests get aligned with the driving coupling (4) tooth spaces. The driven half-coupling and driving coupling (4) teeth feature an identical profile.

EFFECT: higher safety of vehicles and simpler design of self-locking differential.

2 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; 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: 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.

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.

SUBSTANCE: invention relates to methods of control of differential locking of multidrive wheeled vehicles and it can be used at designing of systems to control tractive forces of driving wheels of multidrive vehicles and carrying out investigations of wheeled vehicles. proposed method of control of differential locks comes to locking of differential for definite periods of time at threshold values of mismatching of mechanical parameters of driving wheels intercoupled by said differential and unlocking differential at expiration of definite of time or at achievement of threshold value of steerability index. Unlocking of differentials at achievement of threshold value of steerability index is carried out individually, starting from differential whose locking has greater effect on steerability of wheeled vehicle.

EFFECT: enlarged range of control of traction forces on driving wheels to increase cross-country capacity and traction and speed properties at provision of required steerability of multidrive wheeled vehicles.

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Muscular drive // 2270780

FIELD: transport engineering; bicycles.

SUBSTANCE: invention is designed for devices automatically changing gear ratio without interruption of power flow. Proposed drive contains two differentials. Force sensor 5 is installed between input shaft 8 and common input of both differentials, namely power differential 1 and regulating second differential 2. Said force sensor 5 cuts in braking device 4 at rise of load, said braking devices is idling at direct drive and is connected with regulating input of second differential 2. As a result, output gear 21 of second differential 2 starts rotating and self-braking drive 3 releases carrier 25 of power differential 1. Proposed drive automatically changes over from direct drive to drive with changed gear ratio. Moment of changing over can be regulated by tensioner 6 of spring 19 of force sensor.

EFFECT: facilitated selection of step-down gear in wide range of gear ration depending on individual capabilities of user.

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Differential // 2267676

FIELD: mechanical engineering.

SUBSTANCE: differential comprises housing (1), cross-shaped or straight shaft (5) of satellites, a number of satellites (4), and gear pair (2) of semiaxles. When gears (2) of semiaxles cooperate with satellites (4) the gear ratio changes at least in two stages. The number of stages is multiple to the number of teeth in satellites (4) and gears (2) of the semiaxles.

EFFECT: expanded functional capabilities.

16 cl, 5 dwg, 1 tbl

FIELD: transport.

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.

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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.

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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).

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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: 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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