Infinitely variable transmission

FIELD: mechanical engineering.

SUBSTANCE: infinitely variable transmission comprises power differential (1), synchronizing differential (2), two self-braking mechanisms (3) and (4), and two controllers. The input of power differential (1) is connected with the drive and input of synchronizing differential (2). Central wheels (17) and (18) of the power differential are connected with driven links (15) and (16) of self-braking mechanisms (3) and (4). Driving links (13) and (14) of self-braking mechanisms are connected with central wheels (19) and (20) of the synchronizing differential and controllers. Driven shaft (26) is connected with one of the central wheels of power differential (1).

EFFECT: expanded functional capabilities.

1 dwg

 

The invention relates to the field of engineering, namely adjustable to continuously variable transmissions.

A device with speed control on SU # 1208376 A1, 1986, containing a differential planetary gear and control gear, made in the form of a friction clutch with brake and freewheel mechanisms.

The disadvantage of this device is the low reliability and low cost.

The closest in technical essence to the present invention is a device infinitely variable speed change for SU # 1788365 A1, 1993, containing coaxial input, intermediate and output shafts and two blocks, one of which is a differential planetary transmission, and the other is a means of speed control. The leading differential planetary gear rigidly connected with the input shaft and kinematically connected with the intermediate shaft and the slave link is kinematically with the intermediate and output shafts. The vehicle speed control of kinematically connects the input and intermediate shafts. The control device determines the speed of the intermediate shaft and made in the form of sets of friction of the variator disk, drum and roller.

The disadvantage of this device is the low reliability and narrow CI is the range of change of gear ratio.

Object of the invention is the extension of the range of change of gear ratio, increase reliability, and versatility.

The problem is solved due to the fact that the continuously variable transmission containing power differential effect mechanism and the regulator, according to the formula of the invention provides synchronization differential, two effect mechanism operating in the mode of release, two controllers, with the input of the power differential is connected to the actuator and the input clock differential, Central wheel power differential is connected to slave units effect mechanisms, and the leading links of effect mechanisms connected to the Central wheel clock differential and regulators, and an output shaft connected to one of the Central wheels of the power differential.

This set of features is new, not known from the prior art, and allows to solve the problem, since the presence of differential clock allows you to synchronize the rotation speed of the leading elements effect mechanisms with the speed of rotation of the slave units effect mechanisms and rotate the regulators. Effect mechanisms operate in the mode of release, acting as mechanical amplifiers, when ve is the current link runs away from rolling his slave link, setting the speed of rotation of the latter. The closer the effect of the mechanism is made to the border of the automatic braking, the less force is needed to control the amplifier and the correspondingly higher gain (A.A. Blagonravov Mechanical stepless transmission non-friction type. - M.: Mashinostroenie, 1977, p.59). Regulators, creating a moment of resistance, change the speed of the leading link effect mechanism. The power differential distributes the momentum supplied to him from the actuator between the Central wheels.

The drawing shows a diagram of a continuously variable transmission.

Continuously variable transmission consists of:

the power differential 1 with the Central wheels 17, 18, 24 satellites and gear 22;

clock differential 2 with the Central wheels 19, 20, 25 satellites and gear 23;

effect mechanisms 3 and 4, each of which consists of slave units 15, 16 and the leading elements 13, 14;

two regulators, each of which consists of a gear pump 5, 6, and adjustable throttle 7, 8;

gears 9, 10, 11, 12, 21;

the output shaft 26.

Continuously variable transmission operates as follows.

The gear 21 rotates at a constant speed from the engine, for example, internal combustion engine, the throttle 7 is open and the throttle 8 is closed. When this power kinematics the second circuit 21-22-24-17-15 rotation is transmitted to the slave link 15 effect mechanism 3. By regulating kinematic chain 21-23-25-19-11-9-13 rotation is transmitted to the host link 13 effect mechanism 3, and the chain 21-23-25-19-11-9-5 on the gear pump 5. If the closed throttle 8 gear pump 6 to rotate may not also not rotating the center wheel 20 differential clock 2, United with him by kinematic chain 6-10-12-20. Accordingly, at zero speed of rotation of the leading link 14 effect mechanism 4, is connected to gear pump 6. Because the effect mechanisms operate in the mode of release, and the slave link 16 effect mechanism 4, and United with him driven shaft 26 and the Central wheel 18 differential 1 have zero speed. Partial opening of the regulating orifice 8 orifice 7 reduces the flow area, resulting in the change of the resistance created by the gear pumps 5 and 7, and differentials 2 and 1, there is a transfer of momentum between the Central wheels 19, 20 and 17, 18. In the driven shaft 26 receives a certain speed, depending on the degree of overlap of the inductors 7, 8. With the full opening of the throttle 8 throttle 7 is completely closed, the Central wheel 19 and 17 differentials 2 and 1 is completely stopped, and the Central wheel 20 and 18 receive the maximum possible with the speed. Since the driven shaft 26 is connected to the Central wheel 18 of the power differential 1, he gets the maximum speed of rotation.

Thus, the use of this invention allows stepless change speed from zero to maximum.

Continuously variable transmission containing power differential effect mechanism and the regulator, characterized in that it contains clock differential, two effect mechanism operating in the mode of release, and two controls, with the input of the power differential is connected to the actuator and the input clock differential, Central wheel power differential is connected to slave units effect of the mechanisms leading links of effect mechanisms connected to the Central wheel clock differential and regulators, and an output shaft connected to one of the Central wheels of the power differential.



 

Same patents:

FIELD: mechanical engineering and machine-tool building.

SUBSTANCE: invention can be used in vehicles and machine tools, different machines and mechanisms. Proposed continuously-variable transmission contains drive and output shafts and case accommodating drive and drive and driven constant-mesh gears, differential with coaxial gears mechanically engaging through planet pinions and provided with coaxial axle-shafts, and gear ratio changer including axial-plunger pump with inclined plate with rotary working member, pressure line and suction line connected with reservoir filled with working liquid. Adjustable bypass restrictor is installed in pressure line of pump. Output of restrictor is connected with said reservoir by drain line. Rotary working member of pump is made in form of block of working cylinders accommodating plungers, each being mechanically coupled with inclined plate. Differential is arranged inside working cylinder block of axial-plunger pump with coaxial arrangement of drive and driven gears and said block, and it has at least one pair of planet pinions installed for rotation in cylinder block of axial-plunger pump. Constant-mesh drive gear is connected with drive shaft, and constant-mesh driven gear is connected with drive gear of differential. Invention is aimed at enlarging functional capabilities of transmission owing to provision of limitation of speed of rotation and braking of output shaft, interruption of torque on shaft and control of delivery of pump included into gear ratio changer of transmission and increase of service life and provision of uniform rotation of output shaft and increase of efficiency of transmission.

EFFECT: enlarged operating capabilities, increased efficiency of transmission.

22 cl, 4 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used as gearbox in vehicles or as actuator in tank armament stabilizers. Proposed stepless transmission contains power differential 1, comparing differential 30, regulating differential 2, two self-braking mechanisms 3, 4 operating in release mode, two regulators, and mechanism 36 for equalizing speeds of rotation of central gears of regulating differential. Input of power differential 1 is connected with drive and with input of regulating differential 2. Central gears 17, 18 of power differential are rigidly connected with driven members 15, 16 of self-braking mechanisms and are connected with central gears of comparing differential 30 to provide rotation of the latter in opposite directions. Driving members 13, 14 of self-braking mechanisms are connected with central gears of regulating differential by mechanism 36 equalizing speeds of rotation and are rigidly connected with regulators.

EFFECT: enlarged range of change of gear ratio, improved dynamic characteristics of vehicle, its reliability and multipurposeness.

1 dwg

FIELD: mechanical engineering.

SUBSTANCE: positive-displacement hydraulic-mechanical transmission comprises input shaft (1), output shaft (2), two interconnected reversible controlled hydraulic motors (3) and (4), four-link differential (5), and pumping devices (12), (13), (14), and (15). Satellites (7) and (8) of differential (5) are made in pairs and engage each other. Satellite (8) is wide and interposed between the large solar gear (10) and central wheel (11) with the inner engagement. Satellite (7) is narrow and engages small solar gear (9). Two switching devices (14) and (15) connect the shaft of hydraulic motor (4) with input shaft (1) of the transmission and central wheel (11) with the inner engagement. Two switching devices (12) and (13) connect the shaft of hydraulic motor (3) with output shaft (2) of the transmission and small solar gear (9) of the differential.

EFFECT: reduced mass and sizes and enhanced efficiency.

1 dwg, 1 tbl

FIELD: mechanical engineering.

SUBSTANCE: infinitely variable reduction gear comprises input shaft connected with the driving electric motor and output shaft provided with a longitudinal opening connected with the controllable throttle through the coupling. The throttle is connected with the rotatable housing which receives the hydraulic braking device mounted inside the vessel. The hydraulic braking device is made of worm gearing whose worm wheel is connected with the output shaft. The worm wheel is coupled with two worm shafts arranged from both sides of the worm wheel. The axle of each worm shafts is connected with the gearing pump whose intake is connected with the space of the vessel and outlet is connected with the opening in the output shaft.

EFFECT: enhanced reliability and simplified structure.

1 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to crawler tractors and it can be used in their full-flow hydrostatic transmissions. Said transmission contains dividing reduction unit 2, two parallel final hydrostatic drives with pumps 3, 4 and hydraulic motors 5, 6, track reduction units 17, 18 and two planetary mechanisms. Planetary mechanisms are installed between hydraulic motors 17, 18 and track reduction units 17, 18. Sun gears 9, 10 of planetary mechanisms are connected with each hydraulic motor by two similar gear trains 7, 9. Carriers 11, 12 of each planetary mechanism are connected with epicyclic wheels 14, 13 of other planetary mechanism and with track reduction units 17, 18. invention improves maneuverability of tractor, provides economic recuperation of brake power from trailing side to leading side at turning of tractor, reduced power load on engine at turning, reduced power losses in hydrostatic drives of transmission of tractor with possibility of use of hydrostatic drives of lower installed power.

EFFECT: improved service characteristics of tractor.

1 dwg

The invention relates to a transport engineering

The invention relates to mechanical engineering and can be used in hydraulic drive control for continuously variable transmission

The invention relates to transport machinery and can be used as a continuously variable transmission of a vehicle

The invention relates to mechanical engineering and can be used to create a continuously variable transmission vehicles

FIELD: mechanical engineering; drives.

SUBSTANCE: proposed drive has drum 1, shaft 2 on which planetary gear trains are installed parallel to each other. Each planetary gear train, 3 and 4, respectively, consists of sun gear 5, 6, idler gear 7, 8 and crown gear 9, 10 made in form of toothed rims, one of which is connected to inner surface of drum, and the other, to fixed frame 17. Carrier 11 connected to idler gears 7, 8 interacts with shaft 2, being installed for rotation around shaft. Device providing power action on drum 1 is made in form of weight 15 connected through wire rope to drum 1 or, in form of spring 16, connected by one end to outer surface of drum 1 and by other end, to fixed object. Flow of gravitational or potential energy gets partially to first planetary gear train 3, and partially, through carrier 11, to second planetary gear train 4 and then to drive shaft 2, thus creating excess torque and increasing effectiveness of drive.

EFFECT: increased effectiveness of drive at enlarged area of its application.

2 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used as gearbox in vehicles or as actuator in tank armament stabilizers. Proposed stepless transmission contains power differential 1, comparing differential 30, regulating differential 2, two self-braking mechanisms 3, 4 operating in release mode, two regulators, and mechanism 36 for equalizing speeds of rotation of central gears of regulating differential. Input of power differential 1 is connected with drive and with input of regulating differential 2. Central gears 17, 18 of power differential are rigidly connected with driven members 15, 16 of self-braking mechanisms and are connected with central gears of comparing differential 30 to provide rotation of the latter in opposite directions. Driving members 13, 14 of self-braking mechanisms are connected with central gears of regulating differential by mechanism 36 equalizing speeds of rotation and are rigidly connected with regulators.

EFFECT: enlarged range of change of gear ratio, improved dynamic characteristics of vehicle, its reliability and multipurposeness.

1 dwg

Power amplifier // 2263838

FIELD: mechanical engineering.

SUBSTANCE: power amplifier comprises shaft (1) with central wheel (2) that gears planet wheel (3). Planet wheel (3) is secured to hollow shaft (5) mounted for permitting rotation inside the housing of carrier (7). Hollow shaft (5) is provided with wheel (8) that gears wheel (9) of the same diameter. Wheel (9) is secured to second hollow shaft (6). The spaces of shafts (5) and (6) receive shafts (11) and (11) provided with unbalancing masses (12) and (13), wheels (14) and (15) of the same diameter that are in engagement, and conical wheels (16). Conical wheel (16) engage conical wheels (17) of the same diameter secured in the housing of carrier (7). Unbalancing masses (12) and (13) are secured to shafts (10) and (11) so that the centrifugal force has a single direction in the plane of rotation of the carrier perpendicular to its radius. Under the action of the working load, the carrier begins to rotate. The operation is stable when carrier (7) rotates in the direction to central wheel (2). When carrier (7) move uniformly, the power of the driving motor is determined only by friction in rotating shafts (5), (6), (10), and (11).

EFFECT: reduced friction.

6 dwg

FIELD: universal machine building, applicvable in transmissions of transport facilities.

SUBSTANCE: the transmission has driving 1 and drivens shafts, eccentric 4 (working and balancing) with a groove disk, overruning clutches 7, torsion shafts 9, three-position tooth-type coupling 12, planetary gear, two units of mutually operating friction clutches, flywheel 16 with a friction clutch, step-up and step-down gears. Driving shaft 1 is made separately from transfer eccentric shafts. Driven shaft 2 gets connected with the aid of tooth-type coupling 12 or to driving shaft 1, or with the aid of the rear friction clutch - to central gear-wheel 11. With one link the planetary gear gets coupled to driving shaft 1, with the aid of tooth-type coupling 12 or to driving shaft 1, with the other link through the step-down gear and the friction clutch - to flywheel 16, with sunning link with the aid of the friction clutch - to eccentric shafts. Tooth-type coupling 12 is equipped with a synchronizing device and positioned on driving shaft 1, providing its independent coupling to (uncoupling from) the drive link of the planetary gear (stepless operation), to driven shaft ("direct" transmission), as well as uncoupliung ("neutral" transmission).

EFFECT: reduced consumption of fuel at acceleration due to the use of energy accumulated at bracking.

2 cl, 1 dwg

FIELD: mechanical engineering; automotive industry; machine-tool building.

SUBSTANCE: proposed transmission contains coaxial input shaft 1 and out-put shaft 2, bevel driving wheel 3 and driven wheel 4, additional support central bevel gear 11 and auxiliary support central bevel gear 10, carrier 5 with radial axles on which main planet pinion made up of two wheels 6 and 7, additional planet pinion 8 and auxiliary plant pinion 9 are mounted. Additional support and auxiliary support wheels 11, 10 are secured on their additional hollow intermediate shaft 12 and auxiliary hollow intermediate shaft 18, respectively. Shafts 12 and 18 are installed coaxially to shafts 1 and 2, being connected to them by drives. Transmission and conversion of torque at all duties is provided by braking carrier 5 caused by change of direction of vectors of angular momentum of planer pinions of larger mass at rotation relative to central point 01 of intersection of line O-O of transmission and radial axes 01-01 of carrier 5.

EFFECT: improved reliability of power coupling of input and output shafts with conversion of value of torque and speed depending on value of load applied to shaft.

10 cl, 1 dwg

FIELD: mechanical engineering; automotive industry; machine-tool building.

SUBSTANCE: proposed transmission contains carrier 1 with main planet pinions 6, 7 and additional planet pinion 9, driving central wheel 2 and driven central wheel 3, support wheel 8, input shaft 4 and output shaft 5. Solid planet pinions can play the part of flywheels. Support wheel 8 is secured on hollow intermediate shaft 10 coaxial to input shaft and is coupled with drive of support wheel 8 consisting of three gear wheels 11, 12 and 13. Wheel 13 is intermediate one, being placed between said two wheels, and its axle 14 is installed in transmission housing 15. Two radial axles of carrier 1 are located on one line of axes 01-01 and they carry main and additional planet pinions installed for independent rotation in opposite directions. Line of axis 0-0 of transmission and lines of radial axes 01-01 of carrier intersect in central point 01 relative to which planet pinions rotate.

EFFECT: simplified design, reduced mass of transmission, provision of possibility of automatically changing of torque depending on load on output shaft.

7 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: transmission comprises housing (14), axially aligned input (1) and output (2) shafts, central conical driving (3) and driven (4) gear wheels, carrier (5) with radial axles and satellites made of wheels (6) and (7), basic, additional (8), and auxiliary (9) satellites which are in engagement with driving (3), driven (4) and additional bearing (11) and auxiliary bearing (10) central conical gear wheels, respectively. Additional (11) and auxiliary (10) bearing wheels are mounted on additional (12) and auxiliary (15) hollow intermediate shafts mounted coaxially with respect to input (1) and output (2) shafts, respectively, and connected with them through drives made of gear wheels and shafts (13) and (16).

EFFECT: enhanced efficiency.

7 cl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: transmission comprises housing (1), axially aligned driving (2) and driven (3) shafts, driving (4) and driven (5) central gear wheels, central conical thrust gear wheel (10), carrier (6) with radial axles provided with main satellites (7) and (8) and additional satellites (9), bearing shaft (11) with two cylindrical gear wheels (12) and (13), and intermediate shaft (16). Driving wheel (4), driven wheel (5), and two main satellites (7) and (8) are made of cylindrical gear wheels. Driving wheel (4) and driven wheel (5) are arranged on opposite sides of radial axles of carrier (6). The two wheels of main satellites (7) and (8) are rigidly interconnected through shaft (17) of main satellites to form a single unit. The unit is mounted for permitting rotation on one of the axles of carrier (6) parallel to the axis of the transmission.

EFFECT: simplified design and reduced labor consumption in manufacturing.

5 cl, 1 dwg

The invention relates to the holonomic transmission with stepless change of torque and can be used in machinery, vehicles, machine tools, and other objects and systems

The invention relates to mechanical engineering and can be used in power transmission machines and mechanisms

FIELD: mechanical engineering.

SUBSTANCE: transmission comprises housing (1), axially aligned driving (2) and driven (3) shafts, driving (4) and driven (5) central gear wheels, central conical thrust gear wheel (10), carrier (6) with radial axles provided with main satellites (7) and (8) and additional satellites (9), bearing shaft (11) with two cylindrical gear wheels (12) and (13), and intermediate shaft (16). Driving wheel (4), driven wheel (5), and two main satellites (7) and (8) are made of cylindrical gear wheels. Driving wheel (4) and driven wheel (5) are arranged on opposite sides of radial axles of carrier (6). The two wheels of main satellites (7) and (8) are rigidly interconnected through shaft (17) of main satellites to form a single unit. The unit is mounted for permitting rotation on one of the axles of carrier (6) parallel to the axis of the transmission.

EFFECT: simplified design and reduced labor consumption in manufacturing.

5 cl, 1 dwg

Up!