Gear ratio converter
FIELD: mechanical engineering.
SUBSTANCE: gear ratio converter comprises planet differential provided with the driving carrier and central gear wheels of different diameters. One of the gear wheels is secured to the output shaft for permitting power transmission to the output shaft. The second gear wheel loads the friction device with a given sliding force. The driven part of the friction device is rigidly connected with the third central gear wheel that freely rotates on the output shaft and transmits rotation to the fourth central gear wheel through the reduction gear. The fourth central gear wheel is rigidly connected with the output shaft.
EFFECT: simplified design.
The invention relates to the field of engineering and other mechanisms that require a change of gear ratio when the load changes on the output shaft. An example of such a mechanism may be a gear tool, in particular of the wrench, the clutch mechanism of the vehicle, the gearbox of the helicopter or gyroplane.
There are various ways of solving the optimization problem of the value of gear ratio in the transmission of motion from the motor to the actuator. The most common are gears. They are described, for example, in II Artobolevsky I.I. "Mechanisms in modern engineering". Volume 4 "gears". Moscow. Science, 1980
The disadvantage of such devices is that when they are used, the gear ratio of the transmission constantly, and based on valid technical specifications such as weight, engine power and other, it is difficult to create on the output shaft to the desired torque. Introduction in the design of technologically complex devices, such as electronic controllers, increase the cost of construction and reduce reliability.
Object of the invention is the implementation of the change gear ratio from the engine to the output shaft in accordance with the change of the required torque on the output shaft of the mechanism, when the optimal regenerate engine the simplification of the device, reducing the cost of production.
This goal is achieved by the fact that according to the invention as a Converter gear ratio, use a device that contains a planetary differential with leading planet carrier and different diameter Central toothed wheels, one of which is rigidly fixed on the output shaft of the transmission power of the engine to the output shaft, and the second is loaded on the leading portion of the friction device with a known force slippage that generates brake torque and regulatory ratio, while the driven part of the friction device rigidly connected with the third Central gear wheel freely rotatable on the output shaft, and which, through the gear transmits the rotation of the fourth gear wheel, rigidly connected with the output shaft. Moreover, the smaller the difference between the diameters of the Central gears, the greater the range of change of the gear ratio.
The invention is illustrated in the drawing, which shows schematically the planetary differential transmission of rotation on the drive shaft and the friction device. According to the invention the rotation from the drive shaft 1 is transmitted to the carrier 2 with the housing. On the drive rod has a pair of satellites 3 and 4, rigidly interconnected, the ü which rotates freely on the driver. Satellite 3 rolls on the Central toothed wheel 5 fixed on the output shaft 6. The satellite 4 rolls on the Central wheel 7 which is free to rotate on the output shaft and rigidly connected with the leading part of the friction device 8. Driven part of the friction device 9 is rigidly connected with the toothed wheel 10, a freely rotating on the shaft 6, through which the gear 11, 12, 13, the axes of which are located on the body-the driver, transmits rotation to the gear wheel 14 rigidly connected with the output shaft.
At low required torque when the friction device is not turned, the whole mechanism rotates with the output shaft as a whole and its elements relative to each other still. When this ratio is minimum and equal to 1. In great need of the moment of rotation of the carrier 2 will lead to the forging of satellites 3 and 4 around the Central wheel and the difference between their diameters to turn them against each other and rotate the friction device. However, in accordance with the value of the required torque and the moment of slippage in the friction device will change the gear ratio from the shaft 1 to the output shaft 6, will change torque.
Converter gear ratio, regardless of the load on the shaft, characterized in that according to the SNO invention as a Converter gear ratio using the device, containing a planetary differential with leading planet carrier and different diameter Central toothed wheels, one of which is rigidly fixed on the output shaft of the transmission power of the engine to the output shaft, and the second is loaded on the leading portion of the friction device with a known force slippage that generates brake torque and regulatory ratio, while the driven part of the friction device rigidly connected with the third Central gear wheel freely rotatable on the output shaft, and which, through the gear transmits the rotation of the fourth gear wheel rigidly connected with the output shaft.
FIELD: transport engineering; self-propelled vehicles.
SUBSTANCE: invention relates to automatic control of step gearboxes used in transmissions of vehicles. Proposed device for automatic control of gearbox has rotor 2 installed in housing with fitted-on bellcranks 7 and 8 with flyweights engaging with rods of drive of electric switches 51. Rods are arranged on rotor 2 from outside. Bowl 31 carrying ring 45 with radial holes is installed on outer rod 22. Pins located on switch drive lever are fitted in said radial holes.
EFFECT: simplified design of device.
8 cl, 6 dwg
FIELD: transport engineering; crawler and wheeled vehicles.
SUBSTANCE: invention can be used in automotive system of coupled engine and transmission control. Proposed clashless gearshift system is furnished with automatic system to control and steer the vehicle. System contains additionally microprocessor control unit, controlled restrictor installed in delivery main line between oil pump and friction device and provided with electric connection with output of switching unit, switching unit whose input is connected with output of microprocessor control unit. System contains also vehicle speed sensor, gearbox input shaft speed sensor, engine crankshaft speed sensor, oil pressure transmitter of hydraulic steering system, oil temperature transmitter of hydraulic steering system, oil temperature transmitter of hydraulic system and fuel feed electric drive.
EFFECT: provision of clashless gearshifting, reduced dynamic loads in transmission at automation of gearshifting.
FIELD: automotive industry.
SUBSTANCE: system comprises gear shifting mechanism, housing, lever for gear shifting, comb with locking grooves, and electromagnet for locking upshifting and downshifting. The mechanism has reverse DC electric series-wound motor, worm, and worm gear wheel with shaped face cam and driving pin, potentiometric pickup of the gear shifting cycle, dividing disk with radial grooves, potentiometric pickup of the number of shifted gear, pinion that is in the permanent engagement with the gearing sector mounted on the spring-loaded shaft for permitting axial movement, double-arm jaw lever, bearing jaw mounted inside the housing of the mechanism, roller of the double-arm jaw lever that cooperates with the shaped face cam of the worm wheel, carrier with the axle set in the jaw of the lever for shifting gears, end switch of the lead of the lever for shifting gears, longitudinal tie of the gear box with jaw pivotally connected with the lever mounted on the output shaft, pickup of the speed of vehicle, pickup of speed of rotation of the crankshaft of a vehicle, temperature gauge of the coolant, potentiometric pickup of the position of the pedal for fuel supply, electromagnet for control of oil pressure, end switches of the initial position of the right and left levers of rotation, switch for turning in the automatic regime of gear shifting, electronic unit of the system for automatic gear shifting that summates signals from all pickups and controls the reverse DC series-wound electric motor.
EFFECT: expanded functional capabilities.
2 cl, 5 dwg
FIELD: transport engineering.
SUBSTANCE: invention can be used for electric remote control of mechanical gearboxes. Proposed gearshift unit contains housing, gearshift handle, shaped slot for handle, turning device in form of clamp 4 installed on axle 3 for turning connected with handle, gear shift-in indicators and activator 5. Spherical projection with slot interacting with activator 5 and axle 3 is made on end of handle. Handle is secured on clamp 4 for turning relative to clamp is perpendicular plane. Locks of clamp 4 and activator 5 are installed, respectively, in clamp 4 and activator 5, and recesses for balls of locks of clamp and activator are made, respectively, in housing and in axle 3. Gear shift-in indicators are made in form of noncontact transmitters installed on housing from outside.
EFFECT: provision of simple and reliable unit and safe control.
3 cl, 4 dwg
FIELD: driving equipment, in particular, planetary-spool reducers.
SUBSTANCE: method for increasing rigidity of planetary gear carrier is realized by creation of directional preliminary voltage by means of eccentric bushings (4) in cross connection fingers (3), connecting flanges (1,2) of carrier in single unit.
EFFECT: increased efficiency.
FIELD: transport engineering; fixed-ratio planetary gear transmissions.
SUBSTANCE: proposed carrier has drive shaft, right-hand and left-hand cheeks, central plate arranged between cheeks, main axle secured in coaxial holes of cheeks and central plate. Planet pinions for two planetary gear trains are installed on main axle on bearings. Right-hand cheek is rigidly connected with central plate. Left-hand cheek is coupled with central plate by bridges. Central plate is connected with drive shaft. Intermediate axle is installed in coaxial holes of cheeks and central plate. Planet pinion of one planetary gear train is arranged on main axle on section between left-hand cheek and central plate. Planet pinion of other planetary gear train is arranged on main axle on section between right-hand cheek and central plate, being engaged with planet pinion installed on intermediate axle on the same section.
EFFECT: increased body rigidity of carrier, changed design of carrier to form planetary gear trains with negative or positive gear ratio.
5 cl, 2 dwg
FIELD: mechanical engineering.
SUBSTANCE: planet gear comprises solar pinion (1), satellites each of which is composed of two wheels (2), unmovable wheel (8) with inner teeth, and carrier (7). Wheels (2) of the satellites are mounted on the axle (3) in spherical bearings (4). The unit of each satellite is provided with rubber ring (5) having variable cross-section area. Rubber ring (5) bears on centering washer (6) and interposed between wheels (2) of the satellite. Carrier (7) is provided with openings made in the webs in a staggered order. The diameter of the openings increases with the distance from the axle of the satellite.
EFFECT: enhanced loading capability.
FIELD: automotive industry.
SUBSTANCE: automatically locking equalizing differential comprises housing made of two members, speeder interposed between the members of the housing, and four satellites mounted on the pins of the speeder. The satellites are connected with two conical pinions mounted on the cylindrical bushings. The cylindrical bushings cooperates with the semiaxles by means of inner slots. The semiaxles are connected with the locking disk and centering springs by means of screw.
EFFECT: enhanced off-road capability.