(57) Abstract:The invention relates to the field of transport and eliminates mechanical manual gear change in the gearbox while maintaining the high efficiency of the transmission. Automatic transmission consists of a double planetary gear set, the carrier of which is connected with the turbine wheel of the torque Converter input element of the planetary gear is connected with the engine, the output element of the planetary gear is connected with the pump wheel of the torque Converter, the reactor of the torque Converter is connected with the spool of the hydraulic system, the valve operates six disc couplings, including one in the work, while five other couplings depending on the torque on the driven shaft of the transmission. 3 Il. The invention relates to the field of transport, the predominant use of the vehicle, marine and river vessels.Known transmission , consisting of planetary gear, torque Converter, hydraulic node, node gear pairs, adopted for the prototype.However, the automatic transmission did not find wide application for two main reasons: first, because of the big loss is to gearbox cars, while maintaining the efficiency of gearboxes such as a conventional manual transmissions.The essence of the invention is that in an automatic transmission comprising a planetary transmission, torque Converter, hydraulic node, node gear pairs according to the invention, with the purpose of automation gear and saving high efficiency, applied double row planetary gear, together with the torque Converter, planetary carrier is connected with the turbine wheel of the torque Converter, the pump wheel of the torque Converter is connected with the second-row planetary gear with a high transmission ratio at the pump wheel of the torque Converter, and the reactor of the torque Converter through the tubular shaft reactor and the gear on the end of the tubular shaft is connected with the spool of the hydraulic node, the feed pressure of the fluid and bleeding the fluid pressure sequentially from disk clutch gear pairs of the transmission. Thus, the input to the transmission power of the engine with a double row planetary gear and the torque Converter is split into two parallel flow. The stream power is th cause of the power loss in the torque Converter are not 25-30% of the power of the engine, and just 0,06 (25-30), or 0.04 (25-30), that is, 1,2-1,8% at a flow of power through the torque Converter 6% of the engine power and 1-1,2% at a flow of power through the torque Converter 4% of the engine power.In addition, unlike the prototype is that the reactor of the torque Converter has a kinematic feedback with the output shaft of a transmission of the vehicle and using the spool hub and node gear pairs with the disk clutch when changing the torque on the output shaft automatically switches required speed, reducing or increasing the torque output of the transmission with the aim of preserving the calculated torque and speed input to the transmission.In Fig. 1 shows the kinematic and hydraulic circuit of the automatic transmission of Fig. 2 is a diagram showing changes in the hydraulic efficiency of the fluid coupling and torque of the fluid coupling as a function of speed of the turbine wheel of the fluid coupling to the speed of the pump wheel of the fluid coupling; Fig. 3 - plan of the velocities of the fluid in the fluid coupling when the estimated position sensor-reactor, as well as by increasing or decreasing the load on the driven shaft of the automatic transmission.In Fig. 1 shows the static is CNY shaft; 5 - double-row planetary gear transmission; 6 - fluid coupling; 7 - reactor; 9 - tooth rake command slide valve; 10 - team spool; 11 - spring sensitivity to the increased speed of the output shaft; 12 - spring sensitivity to reduce the speed of the output shaft; 13 - 14 - tube tension spring; 15 - oil pump; 16 - pressure relief bypass valve; 17 - actuating valve; 18 - cylinder actuating valve; 19 - the piston actuating valve; 20 - cumulative springs sensitivity of the Executive spool; 21 - ball castles Executive spool; 22 - rocker control of disc couplings; 23 - disc clutch; 24 - channel hydraulic control disk clutches.The operation of the automatic transmission.When the calculated steady state operation of the automatic transmission torque of the drive shaft is leaking from the shaft 1 to the output shaft of the planetary gear 2 and then from the intermediate shaft 4 through the gear engages the pair of gears in which included any of the seven disc couplings 23 to the follower shaft 3. The reactor 7 is stationary, symmetric flown fluid fluid coupling with the velocity (Va) (see Fig. 3). Utility (Vc) (see Fig. 3) which surrounds the reactor at an angle, creating the force
< / BR>where Cycthe lift coefficient of the reactor, S is the size of the reactor, the mass density of the fluid, the fluid coupling.Gear reactor rigidly connected with the reactor rotates, moving the command spool up, combining channels hydraulic high pressure cylinder 18. With an estimated force on the piston actuating valve 19 will move the actuating valve 17, which in turn delivers the fluid pressure in the hydraulic system on downshift, the result is a slip of the fluid coupling, decreases thereby force Pcacting on the reactor 7, and it will be up until the force of the Pcwill be zero, or reaches the calculated values. When reducing the load on the driven shaft, the interaction is similar, but will only occur in the reverse order. In this case, there will be a force of Pb(see Fig. 3).We offer automatic transmission ensures the full release of the driver, such as a car, with manual shift transmission, fuel economy because the engine will always run on the economy is cnyh manual transmissions. For example, at 100% engine power gear ratio of the planetary gear selected so that the power current through the led, was 90%, then when the calculated efficiency of the fluid coupling (see Fig. 2) 0,9 - 0,95 hydraulic power loss will be only 1% to 0.5% (hydraulic losses ordinary semi-automatic carton LAZ-NAII constitute 15-25%). Automatic transmission comprising a planetary transmission, torque Converter, hydraulic node, node gear pairs, characterized in that, with the purpose of automation gear and saving high efficiency, applied double row planetary gear, together with the torque Converter, planetary carrier is connected with the turbine wheel of the torque Converter, the pump wheel of the torque Converter is connected with the second-row planetary gear with a high transmission ratio at the pump wheel of the torque Converter, and the reactor of the torque Converter through the tubular shaft reactor and the gear on the end of the tubular shaft is connected with the spool of the hydraulic node, the feed pressure of the fluid and bleeding the fluid pressure sequentially from disk clutch gear pairs of the transmission.
FIELD: transport engineering; self-propelled wheeled vehicles.
SUBSTANCE: proposed vehicle contains frame 1 with cab 9, front and rear steerable wheels 4, 6 and middle wheels 5, engine placed behind the cab along vehicle and covered by hood 11. hydrostatic transmission contains pumping station 21 consisting of matching reduction gear driven by engine placed behind the cab, and three pumps connected by pipelines with hydraulic motors providing separate drives of wheels. Hydraulic motors are arranged along frame 1 between sidemembers on solid brackets made in form of boxes with flanges connected with wall of side member between its webs. Invention makes it possible to create ecologically clean and reliable multipurpose all-wheel-drive vehicle of high cross-country capacity with hydrostatic transmission to drive all wheels.
EFFECT: provision of convenient mounting and servicing of transmission units.
5 cl, 7 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.
FIELD: transport engineering; automobiles with positive displacement hydraulic drive.
SUBSTANCE: proposed transmission includes constant-capacity guided-vane hydraulic pump mechanically connected with vehicle engine communicating through pressure, drain and suction hydraulic lines through hydraulic distributor enclosing pressure and drain hydraulic lines and playing the part of reversor with at least one constant-capacity reversible guide-vane hydraulic motor to transmit torque to one or two driving wheels of automobile. Spaces of suction and drain hydraulic lines communicate with space of hydraulic tank. Suction hydraulic line passes through adjustable hydraulic restrictor whose control lever is mechanically coupled with automobile accelerator pedal.
EFFECT: simplified design of transmission, reduced fuel consumption and weight of transmission and its cost, and increased efficiency of automobile.
18 cl, 5 dwg
FIELD: mechanical engineering; machine building hydraulics.
SUBSTANCE: invention can be used on vehicles and machine-and-tractor units operating under unsteady conditions of movement. Proposed device contains planetary train 1, reactive link 3 connected with drive gear of oil pump 5. Planetary train is connected through carrier shaft with gearbox 9 and is set into operation by engine 11. Two-step adjustable restrictor 12 is installed in pressure main line of pump. Safety valve 14 and control cock 15 are connected to input of adjustable restrictor, being also installed in pressure main line of pump pneumohydraulic accumulator, being end member of pressure main line, is provided with three spaces. It consists of hydraulic cylinder, free piston, piston with rod, piston position regulator, oil line and oil channel. Space between pistons is filled with oil which regulates volume.
EFFECT: reduced influence of vibrations of external traction load onto functioning of machine-and-tractor unit.
FIELD: transport engineering; hydrostatic transmissions.
SUBSTANCE: proposed hydrostatic transmission contains pumping unit consisting of main and makeup pumps driven by vehicle engine, hydraulic motors connected by main hydraulic lines with pumping unit and forming circulating hydraulic circuit, and electrically driven self-contained pump whose delivery space is connected with hydraulic circuit formed by main hydraulic lines. Hydrostatic transmission is furnished additionally with sealed hydraulic tank with device for charging its air space with compressed air from vehicle pneumatic system and containing shutoff cock, compressed air pressure regulator in sealed hydraulic tank with safety valve and vacuum manual control valve to discharge compressed air from sealed hydraulic tank, two-position manual control valve for alternate hydraulic coupling of suction space of self-contained electrically-driven pump with hydraulic tank and with device for charging the tank with working liquid, check valve arranged in drain hydraulic line at inlet of sealed hydraulic tank, and manually controlled shutoff valve in suction hydraulic line at outlet of sealed hydraulic tank.
EFFECT: improved reliability of hydrostatic transmission of vehicle designed for operation under various road conditions.
5 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: invention can be used in different vehicles and in devices and mechanisms for clashless engagement of driven shafts. Proposed torque converter contains drive and driven units of converter. Drive unit is made in form of disks 2-5 with slots freely fitted on splined shaft 1. Movable blades are fitted in said slots. Driven unit of converter is made in form of cylindrical housing 7 with driven shaft 16 and rings 11 and 12 fitted on shaft. Disks 2-5 with blades 6 of drive unit of converter are arranged inside rings. Slots in disks 2-5 of drive unit of converter are made through being arranged tangentially. Each of rings 11, 12 in cylindrical housing 7 of converter driven unit is installed for rolling on guide 13, being connected with axle-shaft 14 flush-fitted in cradle of step bearing 15 whose body is in rigid engagement with cylindrical housing 7. With drive unit rotating, summary driven torque is formed from its hydraulic and inertia components. Formulas for calculating the torque are given in description of invention.
EFFECT: improved efficiency of hydraulic - inertia converter, its control system, gearbox of converter and method of torque conversion.
24 cl, 1 tbl, 10 dwg
FIELD: mechanical engineering; vehicle hydraulic drives.
SUBSTANCE: proposed recuperative reversible stepless hydraulic transmission of wheeled vehicle contains drive engine 5, recuperator 20 with overrunning clutch 24, controllable reversible hydraulic machine 18 with pressure and suction and control plunger 8 communicating with hydraulic control system through pipelines, follow-up hydraulic booster with variable-capacity pump 12 of reverse capacity, four non-controllable hydraulic machines 29-32. Each of said hydraulic machines has vehicle wheel, and wheels of vehicle are in contact with road pavement. Recuperator 20 is made in form of planetary reduction gear whose carrier 19 is connected with pump 12 and with hydraulic machine 18 provided with two diametric pressure and two diametric suction spaces and connected with hydraulic machines 29-32 by pipelines. Hydraulic machine 18 contains "floating" plunger 33 with two cylindrical grooves between two end face spaces and "polar" plunger by channels of which end face spaces of floating plunger 33 are communicated, overlapped or reversed with pressure and suction spaces of hydraulic machine 18. Cylindrical grooves of floating plunger 33 synchronously overlap or hydraulically communicate two pressure and two suction spaces of hydraulic machine 18. Lever 6 of polar plunger is mechanically connected with corresponding slot of plate 3 of vehicle speed and reverse control member.
EFFECT: reduced number of control members, dispensing with brake system improved cross-country capacity of vehicle, reduced fuel consumption, reduced acceleration time, increased efficiency.
5 cl, 11 dwg
FIELD: public building structures, particularly drives for showcase rotation.
SUBSTANCE: drive to rotate showcase substantially formed as superimposed disc 4 installed on pin 5 provides force transmission from drive 12 to disc 4 by means of flexible tie having tensioning means. Flexible tie is formed as closed loop of chain 10 having rigid links. The chain passes around the disc 4 along disc surface generator. Drive has sprocket 11 of driving means. The sprocket 11 is installed on shaft of hydraulic drive 12. Hydraulic drive 12 is mounted on plate 13 moving in radial direction relative disc 4 by hydraulic power cylinder 16.
EFFECT: increased safety of the drive, improved disc position adjustment, reduced size, simplified mounting and enhanced maintainability.
7 cl, 2 dwg
FIELD: transport mechanical engineering.
SUBSTANCE: device comprises electric means for measuring working volume of pumps and hydraulic motors and pickup (60) for measuring the speed of rotation of the shaft of the pump station. The electric circuits are provided with threshold control members (67) and (80) interconnected between pickup (6) and the electric means. Between threshold control members (67) and (80) and electric means for changing working volume of pumps (67) and (80) and hydraulic motors (13), (14), (17), and (18) of the drive of end wheels are variable resistors (77), (78), (86), and (87) that are controlled by pickups (89) and (89) of pressure difference in hydraulic circuits of the drive of the intermediate wheels and the drive of each pair of end wheels.
EFFECT: enhanced reliability and prolonged service life.
3 cl, 4 dwg
FIELD: mechanical engineering; production of drive units for engineering tools and motor vehicles.
SUBSTANCE: the invention is pertaining to the field of mechanical engineering and may be used in production of drive units for engineering tools and motor vehicles. The self-regulating infinitely variable speed transmission contains: an input shaft 9 and an output shaft 6, a centrifugal type nonadjustable hydraulic pump 3, a gear differential unit 2 with two output shafts 5, 6 and a nonadjustable hydraulic motor 4. The hydraulic pump 3 is connected to the gear differential unit output shaft 5. The nonadjustable hydraulic motor 4 is connected to the gear differential unit output shaft 6, which is an output shaft of the gear differential unit output shaft. Self-regulation of a torque of the output shaft is depending on a load by changing the number of revolutions per a minute of the centrifugal pump using the differential gear of the he self-regulating infinitely variable speed transmission. The technical result is an increased affordability due to reduction of a quantity of gears and lack of the throttling losses of a liquid and to the complete self-regulation.
EFFECT: the invention ensures an increased affordability due to reduction of a quantity of gears and lack of the throttling losses of a liquid and to the complete self-regulation.