Power transmission compact self-propelled chassis
(57) Abstract:Usage: in the transmission of small traction vehicles. Essence: the crankshaft of the engine and the shaft of the semi-independent PTO is located transversely relative to the longitudinal axis of the chassis. The primary shaft of the gearbox is made with a shank for connection with the propeller shaft synchronous longitudinal PTO, and the secondary shaft with the shaft to drive auxiliary drive axle. 1 Il. The invention relates to power transmissions and PTO trailer vehicles, mainly small-sized self-propelled chassis, requiring extensive PTO.Known power transmission compact tractor production ATZ (Altai tractor plant) containing the transfer case actuator of the hydraulic pumps and the longitudinal shaft double-sided (front and rear) PTO and gearbox with longitudinal shafts connected with the cardan transmission with limited-slip differential driving axle (see technical description and operating instructions compact tractor "Worker", Rubtsovsk, 1991).The disadvantages specified Sylow the current bridge to improve towing qualities compact tractor; the complexity of the transmission in connection with the extension node gearbox is connected to the transmission shaft drive transmission.Closest to the invention is a power transmission self-propelled chassis of the T-16 MG (see Technical description and operating instructions T-16 MG. 00.000 AND Kharkiv "Prapor", 1988, page 6, 41). Powertrain chassis contains longitudinally-located engine, clutch with optional clutch drive shaft PTO and hydraulic pump, double-shaft gearbox with a transverse shaft, the transmission to the differential, differential lock and end transmission. In addition, the secondary shaft of the gearbox is synchronous cross-PTO.The disadvantages of specified power transmission chassis are the lack of opportunities drives additional front driving axle and front PTO.The aim of the invention is to eliminate said drawbacks, i.e., the functional enhancement of power transmission self-propelled small-sized chassis.This objective is achieved in that the power transmission compact self-propelled chassis contains the engine, a dual clutch transmission, connected through the main clutch to the crankshaft of the engine and through one or two drive shafts with one or two self-locking differentials axles, and one or two of the shaft of the synchronous PTO. The engine of this chassis and the shaft of the semi-independent PTO made with a transverse relative to the longitudinal axis of the chassis, gearbox, designed for horizontal shafts connected via a gear to the shaft of the clutch. The input shaft of the specified transmission provided with a shank connection with one or two cardan transmissions simultaneous longitudinal front or rear PTO, and the secondary shaft shank drive auxiliary drive axle.Unlike analogue and prototype power transmission is performed with multifunctional connectivity front driving axle with transverse semi-independent front and synchronous PTO.The invention is illustrated kinematic diagram of power transmission chassis.Power transmission compact self-propelled chassis contains the engine 1, the main clutch 2, the semi-independent drives the transverse shaft 3 PTA also double-shaft gearbox 7 and one or two leading axle 8 with self-locking differentials 9. Transmission 7 is a bevel gear 10 their primary shaft 11 is connected through a main clutch 2 to the crankshaft 12 of the engine 1 and the secondary shaft 13 with the rear PTO transmission 14. The shank 15 of the shaft 13 is driven front axle. From the primary shaft 11 through the shank 15 and 17 are rear and front synchronous sampling power. The crankshaft 12 of the engine 1 and the shaft 3 PTO made with a transverse relative to the longitudinal axis of the chassis, and the shafts 11 and 13 of the gearbox 7 with longitudinal.The inclusion of the shaft 3 of the semi-independent PTO is made by means of a toothed coupling 18 off additional coupling 6. The shanks 16 and 17 simultaneous selection of power are the ends of the shaft 11 of the transmission 7. Therefore, simultaneous sampling power, as well as pumps 4 are always on when permanently closed core 2 and an additional 6 couplings. The shanks 15, 16, 17 and 19 of the shaft 13, 11 and 3 when not in use, close the protective caps 20.Torque from the crankshaft 12 of the engine 1 through the constantly closed the main clutch 2, the shaft clutch 21 and the transmission 10 is transmitted to the primary shaft 11 is scialom 9 one of the axles 8.Thus, powertrain chassis made multifunction with additional drive capability leading front axle with extensive PTO.The presence of semi-independent of the drive shaft 3 PTO and hydraulic pumps 4 allows you to perform the following operations: to produce a consistent acceleration in the beginning of the working bodies of agricultural machines (guns), and then tractor unit; to make a short stop chassis without stopping the working bodies of the machines (guns) with the included hydraulic motors and switch gear. The presence of front and rear synchronous PTO allows the chassis to gang up with machines, the performance of which is connected with the speed of the chassis.Technical and economic effect is achieved by extending the functionality of the power transmission compact self-propelled chassis without the introduction of additional nodes. Power transmission compact self-propelled chassis that contains the engine, a main clutch, semi-independent drives PTO and hydraulic pumps connected through transmission with additional coupling selection moxnes and through at least one cardan transmission with at least one samolocik differential driving axles, characterized in that the crankshaft of the engine and the shaft of the semi-independent PTO is located transversely relative to the longitudinal axis of the chassis, gearbox, made with longitudinal shafts are connected through a transmission shaft, a main clutch and the primary shaft of the gearbox is made with a shank for connection with the propeller shaft synchronous longitudinal PTO, and the secondary shaft with the shaft to drive auxiliary drive axle.
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.