Gearbox

FIELD: transport.

SUBSTANCE: gearbox crankcase represents housing with the main cover bolted to the housing mounting place to form a cavity there between designed to accommodate two primary shafts and one secondary shaft. The said primary shafts represent a hollow outer and an all-metal inner shafts fitted coaxially. A pair of driving gear wheels is fitted on the outer primary shaft and three gear wheels are mounted on the inner primary shaft. The said gear wheels are made integral with the primary shafts so that uneven gearings are driven from the inner primary shaft and even gearings are driven from the outer primary shaft via the clutches. The said clutches are fitted on the secondary shaft. The said gearshift clutches are fitted on the secondary shaft between appropriate gear wheels fitted on the shaft unfixed. The housing accommodates the reverse gears assembly with its primary gear wheel in mesh with the gear wheel made integral with the inner primary shaft, while its secondary gear wheel is in mesh with reverse gear wheel fitted on the secondary shaft. The aforesaid cover is bolted the gearbox housing and, depending upon the axle and engine arrangement, can have an outlet hole and flange sealing device.

EFFECT: higher efficiency of power plant and automatic gear shifting.

1 dwg

 

Known chetyrehballnoe manual transmission, designed to change the gear ratio on the magnitude and direction of the primary shaft which is made in the form of a hollow outer and metal inner shaft located coaxially with made in one piece with the shaft, on the inner parts of the shafts, the leading toothed wheel, so that the odd-numbered transmission are from the internal primary shaft, and even from the outer shaft. When this external (output) side of the shaft is fixed in the cavity of a twin clutch and its slots are connected with the hub of driven clutch plates. As part of the gearbox it is possible to allocate housing within which the bearings are installed primary shafts, blocks, gears and the secondary shaft, the output ends of which their gears are in mesh with the intermediate gear, the intermediate unit gears reverse gear, clutch gear, actuator mechanisms, gear, oil pump with controls and distribution of the working fluid (oil). Specified chetyrehballnoe manual transmission is performed with two secondary shafts, therefore, is not devoid of such drawbacks, such as complexity of design and a large mass (see the Description of the design of the car "AUDI TT".

There is also an automated three-shaft manual transmission with coaxial spaced primary shafts, each of which has a toothed wheel, which is in constant mesh with the corresponding block gear secondary shaft, on which are mounted gears, couplings enable and output gear of the main transmission for front-wheel drive car. However, changing gear ratios is accomplished by a sequential combination of two or more gear sets (see AC No. 1113287 And the USSR).

The technical result of the present invention is to remedy these disadvantages by simplifying the structure.

This is achieved by the fact that the box changes gear, comprising a housing, primary shafts, blocks, gears and the output shaft, the blocks of the intermediate gears of the primary and secondary shafts, a unit of the intermediate reverse gears, clutch gear, the drive mechanisms of the gear, its the crankcase is made in the form of a housing, on which the fastening elements, providing the possibility of its composition and application depending on wheel of a formula and the location of the engine for front-and rear - and all-wheel drive layout with attached via bolts to the attachment plane korpusove cover, and forming together with it a cavity within which are two of the leading and driven shafts, the primary shaft is made in the form of a hollow outer and metal inner shaft located coaxially with the leading pair of gear wheels on the outside and three on the inner primary shaft, made in one piece with the shaft, so that the odd-numbered transmission are from the internal primary shaft, and even from the outer shaft through the clutch gear located on the secondary shaft between the respective gears mounted on the shaft freely, and, in addition, inside the housing is mounted unit gears reverse primary gear wheel which engages with the toothed wheel, made in one piece with the inner primary shaft and the secondary - gear reverse gear mounted on the secondary shaft, the gearbox housing by means of bolts cover is attached, which, depending on wheel of a formula and the location of the engine can be performed with the outlet and a sealing device for the flange.

With the purpose of increasing the rigidity on the outer part of the inner primary shaft mounted bearing is pressed into the clip associated with the output end of the external has pervichnogo through a spline connection.

In addition, in the inventive box changes gear uses one output shaft for the transmission of torque as the main transmission directly, and the transfer case or PTO transmission, which enables the implementation of its layout and application depending on wheel of a formula and the location of the engine for front-and rear - wheel-drive and schemes, and it also made a toothed wheel for driving the speed sensor speedometer.

The drawing shows a General view of the gear box changes gear in the section.

The claimed technical solution is a transaxle case consisting of a body 1 and the top cover 2 is coupled via a bolted connection, inside which are the primary shafts, made in the form of a hollow outer 3 and metal 4 internal, located coaxially with the leading toothed wheels, made in one piece with the shaft. Leading gears 5 and 6 are made in one piece with the outer primary shaft 3, and the gears 7, 8 and 9 in the same way - with the internal primary shaft 4. Inside the housing is mounted a gear train 10 to the rear, while the first gear is engaged with the toothed wheel 8, made in one piece with the internal primary shaft 4, and the second toothed wheel, the toothed wheel gear 11, mounted on the secondary shaft 12. Gears mounted on the output shaft 12, is enabled by using the couplings 13, mounted on the secondary shaft 12 is stationary. On the secondary shaft 12 is a gear wheel 14 that is part of the gear 15 of the differential housing, forming the main transmission.

For the perception of stress internal primary shaft 4 to its output end rests on the ball bearing, which is located in a recess of the crankshaft and is retained by the pad. The inner 4 and outer 3 primary shafts are connected through a bearing 16, which is mounted in the holder 17. When the holder 17 by means of the spline connection is connected with the outer primary shaft 4 and held retaining rings 18 and 19.

Running transmission as follows. In the initial state of the clutch switch is off. After starting the engine and its partial or complete warm-up to operating temperature automatic drive gear at the command of the driver includes first gear. In the neutral position of a transmission, the microcontroller will not include the corresponding first gear drive twin clutch regardless of the frequency of rotation of the crankshaft. When the first gear and the increase in the frequency of rotation of the crankshaft of the engine starts trogan the I car.

In the creep torque of the vehicle in an automatic mode under the condition of positive acceleration is enabled second gear, preparing the process of switching the transmission to a higher gear. Upon reaching the appropriate speed in first gear, depending on the mode of operation of the engine (cheap or sports) control signal from the microcontroller is supplied to the dispenser control system clutch, which redistributes the flow of fluid to the second cavity. When this happens the instant the switching clutch without breaking the flow of power and torque on the outer primary shaft is transmitted to the gear pair of the second gear. And so on up to fifth gear, and simultaneously with the fifth transfer the microcontroller will leave enabled and fourth transfer in the case of increasing load, when the engine speed will decrease to a certain value and will need more traction on the drive wheels.

If the acceleration of the vehicle is positive, then the machine by the command of the microcontroller includes a second transmission, and if the vehicle speed is constant (acceleration is zero or comes slow), then the first transmission remains enabled. When you increase the load on the drive wheels (negative acceleration) is going on is it the reverse process.

If necessary, reversing the driver turns on the reverse gear and the work involved only the clutch disc outer shaft, the inclusion of which is happening with increasing frequency of rotation of the crankshaft.

The effect of the use of the invention is that it increases the performance of the power plant by reducing losses in the process of shifting without breaking power flow, as well as due to the significant reduction of the switching time, which, in turn, leads to an increase in economic and environmental performance.

Additionally, this solution allows you to automate the process of shifting manual transmission and thereby improve consumer quality vehicles, particularly buses with manual transmission.

Box change gear, comprising a housing, primary shafts, blocks, gears and the output shaft, the blocks of the intermediate gears of the primary and secondary shafts, a unit of the intermediate reverse gears, clutch gear, the drive mechanisms of the gear, wherein the transmission housing is made in the form of a housing, on which the fastening elements, providing the possibility of its composition and application dependent the minute wheel formula and the location of the engine for front-, and rear-and all-wheel drive layout with attached via bolts to the attachment plane of the main body cover, and forming together with it a cavity, inside which are the two primary and the secondary shaft, the primary shaft is made in the form of a hollow outer and metal inner shaft located coaxially with the leading pair of gear wheels on the outside and three on the inner primary shaft, made in one piece with the shaft so that the odd-numbered transmission are from the internal primary shaft, and even from the outer shaft through the clutch gear located on the secondary shaft between the respective gears mounted on the shaft freely, and in addition, inside the housing is mounted a gear train reverse primary gear wheel which engages with the toothed wheel, made in one piece with the inner primary shaft and the secondary - gear reverse gear mounted on the secondary shaft, the gearbox housing by means of bolts cover is attached, which, depending on wheel of a formula and the location of the engine can be performed with the outlet and a sealing device for flange.



 

Same patents:

FIELD: transport.

SUBSTANCE: invention relates to vehicle transmissions, particularly, to differentials with automatic wheels locking. The proposed differential comprises drive housing accommodating moving ball closed chains incorporating with half-axle components. The said components are fitted aligned on half-axles. The drive element represents a plate, the ball chains being fitted in the holders furnished with axles mounted in through slots of the drive housing at equal radial distance from the drive housing axis. The ball chains are arranged so as to allow the balls to pass along the variable-depth figurate paths arranged in symmetry on the flange opposite end faces. The said flanges seat on the aforesaid half-axle elements.

EFFECT: higher reliability, compact design.

6 cl, 6 dwg

FIELD: transport.

SUBSTANCE: gearshift clutch and toothed rim with internal and external gearing, controlled by one sliding bar, allow operating planetary mechanism in three operating conditions. The first operating condition is direct transmission, the second operating condition means reduction gear with maximum gear ratio and stopped epicyclical wheel and the third operating condition means reduction gear with output shaft reverse rotation and stopped pinion frame.

EFFECT: better operating performances due to increased number of forward speeds, increased efficiency.

2 dwg

FIELD: transport.

SUBSTANCE: proposed gearbox incorporates an input and output shafts running in bearings and a lay shaft arranged parallel to the said input and output shafts. The output and lay shafts are furnished with the supports in the gearbox housing intermediate wall. The input shaft rear end is fitted in the output shaft end. The input shaft comprises a reverse drive gear and three forward running gears made integral with the aforesaid shaft. The input shaft supports also dual-direction gear free running thereon and accommodating a two-position coupling. One driven gear runs free on the output shaft end, while two other driven gears are fitted on the output shaft unfixed with a three-position coupling arranged there between. Three drive gears, dual-direction gear and three forward running driven gears in mesh with the input and output shaft gears run on the lay shaft. The reverse gear is fitted unfixed on the lay shaft to engage with the additional reverse gear. The said lay shaft supports two unfixed three-position coupling seating between the lay shaft gears. Similar coupling is fitted on the output shaft end.

EFFECT: reduced metal input, higher efficiency.

2 dwg

FIELD: transport.

SUBSTANCE: automatic multiple speed transmission based on a stepped planetary gear train includes input and output shafts. The input shaft has a stepped planetary gear train and reverse planetary gear mounted thereon. The output shaft has driven gears and centrifugal governor mounted thereon. The stepped planetary gear train contains several sun gears fixedly connected to the input shaft and integrated into a train with several sets of pinions mounted on the common carrier block and rotating around the gears. The annulus gears of the stepped planetary gear train are installed so that they can freely rotate on the input shaft. There are two driving gears located on each end of the carrier block, out of which two are connected to the carrier block in a fixed manner and the other two are connected to the carrier block through forward friction clutches. The driving gears are engaged with respective forward driven gears on the output shaft. The outer collars of one-way clutches and the drive portion of the friction clutches have permanent magnets installed and lock slots provided thereon. The planetary gear casing and the driven portion of the friction clutches contain rotation speed sensors and locks; the outer collar of a one-way clutch is fixed by a lock that is controlled by the control unit based on speed sensor parameters transmitted to it.

EFFECT: higher efficiency and smaller size of a multiple speed transmission; reduced power losses as required to maintain pressure in the hydraulic system.

5 dwg

Planetary gearbox // 2324850

FIELD: transportation, trackless surface vehicles.

SUBSTANCE: invention pertains to the field of motor transport engineering and relates to staggered planetary gear box. The automatic hydro mechanical gear box consists of casing (1), input link (3), output link (4) and planetary reduction gear. In the planetary reduction gear, there are three frictional clutches and four friction brakes. The first planetary gear set consists of central gear (5), drive (6) for satellites and crown gear (7). The second planetary gear set consists of central gear (8), drive (9) for satellites and crown gear (10). The third planetary gear set consists of central gear (11), drive (12) for satellites and crown gear (13). The input link (3) is joined to rigidly interconnected drive (6) and the central gear (8). The crown gear (13) is connected to the output link (4) of the gear box. Drive (9) is connected to the control frictional clutch (15) through drive (6), which is rigidly connected to the central gear (8). Crown gear (10) is connected through the control frictional clutch (16) to drive (12), which is rigidly fixed to the central gear (5). Frictional brakes (17) joins the crown gear (7) to the casing (1) of the gear box. Frictional brakes (18) connect interconnected drive (9) and central gear (11) to the casing (1) of the gear box. Frictional brakes (19) connects the crown gear (10) to the casing (1) of the gear box. Frictional brakes (20) connects interconnected drive (12) and the central gear (5) to the casing (1) of the gearbox. This allows for enhancement of dynamic properties and broadening of the range of transmission ratios.

EFFECT: enhancement of dynamic properties and broadening of the range of transmission ratios.

5 cl, 6 dwg

FIELD: transport engineering.

SUBSTANCE: input shaft 2 and primary shaft 3 are coaxially installed in supports of gearbox housing. Secondary shaft 4, carrier shaft 5 and output shaft 6 are arranged parallel to coaxial shafts 2 and 3. Gear 7 is fixed on primary shaft 3, gear 8 is freely fitted at one side and gear cluster consisting of two gears 9 and 10 is installed at other side. Gear cluster consisting of gears 11 and 12 engaging with gears 8 and 7 of primary shaft and gears 13 and 14 engaging with cluster of gears 9 and 10 on primary shaft are installed on secondary shaft 4. Sun gear 15a of planetary mechanism is secured at output of secondary shaft 4, said gear being engaged with planet pinions 16 arranged on axles of carrier 17H. Planet pinions 16 are in meshing with epicyclic wheel 18b. Gear 8 is connected by tubular shaft 19 with gear rim 20, gear rim 21 is secured on primary shaft 3, and three-position gear rim 22 is secured on input shaft 2, three-position shifter clutch 23A being fitted on gear rim 22. Two position twin clutch B consists of clutches 24 and 25 interconnected by shifter fork 26. Clutch 24 is installed on gear rim of gear 7 of primary shaft 3, and clutch 25, on gear rim of gear 13 of secondary shaft 4. Two-position clutch 27C is fitted on hub of secondary shaft 4 between gears 13 and 14. Gear rim 28 is secured on tubular shaft 29 of housing of epicyclic wheel 18. Two-position gear rim 30 is secured on carrier shaft 5. Three-position gear rim 31 is secured on output shaft 6 which carries shifter clutch 32 connected for sliding with slider 33. Gear rim 34 with internal and external meshing is secured on slider 33, external teeth being engaged with three-position gear rim 35 of housing 1, and gear rim 36 of carrier 17 and gear rim 37 of housing of epicyclic wheel 18 are arranged opposite to external gearing.

EFFECT: reduced metal usage, simplified design of gearbox.

2 dwg

FIELD: transport engineering.

SUBSTANCE: proposed gearbox contains coaxial input, primary and secondary shafts and countershaft parallel to them, two-position twin clutch consisting of two one-way clutch members intercoupled by shifter fork, shifter clutch installed on gear rim of input shaft and shifter clutch installed on gear rim of outer shaft. Simple three-link planetary mechanism is installed on secondary shaft of gearbox.

EFFECT: enlarged operating capabilities of vehicle owing to increased number of speeds and range of gearbox.

2 dwg

FIELD: transport engineering.

SUBSTANCE: invention can be used in vehicles and in drives of mounted equipment of special vehicles. Shifter clutch of gearbox output shaft is brought out of reduction gear part. Cluster of two gears is freely fitted on secondary shaft and one gear is fixed. Shifter clutch is arranged in between, being coupled by slider with other clutch arranged between gears of primary shaft. Carrier shaft gear rim is two-position, and gear rim of output shaft is three-position one. Shifter clutch on said rim is provided with three internal gear rims. Gear rim with internal and external meshings is rigidly secured on slider of shifter clutch. External gearing of rim is engaged with three-position gear rim of housing.

EFFECT: enlarged operating capabilities of vehicle, reduced metal usage of set.

2 dwg

Gearbox // 2319623

FIELD: automotive industry.

SUBSTANCE: gearbox is designed for mounting onto all-wheel-drive trucks. Gearbox case 1 accommodates drive shaft 2, countershaft 3, driven shaft 4, reverse idler gear 5, planetary gear train 6 and interaxle differential 7 are installed on one axle and have common carrier 8. Sun gear of planetary gear train 10 is installed on driven shaft 4. Fitted on drive shaft 2 are double-acting clutches 11 and 12, four rotating gears 13, 14, 15 and 16 and two fixed gears 17 and 18. Fitted on countershaft 3 are double-acting clutch 19, two rotating gears 20 and 21, and four gears 22, 23, 24 and 25 which are fixed. Double-acting clutch 26 and two rotating gears 27 and 28 are installed on shaft 3. Planet pinions 29 of planetary gear train and planet pinions 30 of interaxle differential are arranged on one axle. Ring gear 9 of planetary gear train can alternately engage with toothed rim 31 secured on case 1 and toothed rim 32 on carrier 8. Ring gear 33 of planetary mechanism of interaxle differential is in constant meshing with toothed rim 34 which is secured on shaft 35 of axle drive and can be meshed with toothed rim 36 secured on carrier 8. Sun gear of planetary mechanism of interaxle differential is installed on axle drive shaft 38.

EFFECT: reduced power losses in transmission, noise level in operation, increased number of speeds with optimum kinematic parameters.

2 cl, 2 dwg

FIELD: transport engineering.

SUBSTANCE: invention relates to stepless mechanical transmission on base of inertia impulse transmission. Proposed transmission consists of input shaft 1 rigidly connected with housing of impulse mechanism 2 mechanically coupling with intermediate shaft 3 in which two overrunning mechanisms are installed, main mechanism 4 and output mechanism 5. Outer race 6 of main overrunning mechanism is connected with transmission case by means of cam clutch 7. Inner clutch member 8 of one of cam clutches is rigidly connected with housing of impulse mechanism. Clutch member 9 of second clutch is rigidly connected with flywheel 10 of output shaft. Outer race 11 of one of cam clutches is arranged on intermediate shaft between housing of impulse mechanism and main overrunning mechanism. Outer clutch member 12 of second cam clutch is installed on intermediate shaft between flywheel of output shaft and main overrunning mechanism. Outer clutch member 12 is rigidly connected with cam clutch 7 of main overrunning mechanism.

EFFECT: provision of transmission of torque from flywheel of output shaft to input shaft and vice versa.

3 dwg

FIELD: transport engineering; tractors.

SUBSTANCE: invention relates to hydraulically operated friction clutches. Proposed friction clutch contains hub secured on shaft of gearbox, hydraulic cylinder with radial projections made on hub, piston with pressure disk, thrust disk, inner drum made integral with driven gear and connected by gear joint with driving disks, driven disks connected with outer drum, ring groove made on inner surface of outer drum, and lockring. Novelty is that outer drum and thrust disk are made in form of common part, outer drum is provided with longitudinal projections, with outer projections of driven disks fitted in slots between longitudinal projections. Ends of projections of outer drum are installed between radial projections of hydraulic cylinder, and lockring is arranged in ring channel formed by ring grooves made on inner surface of outer drum and on outer surface of hydraulic cylinder.

EFFECT: reduced wear of disks, increased transmitted power and improved repairability of clutch.

2 dwg

Gear box // 2253781

FIELD: mechanical engineering.

SUBSTANCE: gear box comprises shafts (3)-(5) with gear wheels (6)-(9), housing (18) provided with load-bearing wall (19) with supports (20) and (21), shafts (4) and (5), three-link differential mechanism (15) whose one link is connected with the secondary shaft (5), mechanism for shifting gears, and device for control of the differential mechanism. Wall (19) is made of detachable lid which encloses the differential mechanism (15) and mates the longitudinal wall of housing (18).

EFFECT: enhanced reliability.

9 cl, 11 dwg

Gear box // 2254507

FIELD: mechanical engineering.

SUBSTANCE: gear box comprises housing (1) made of the front and rear cap-shaped parts whose longitudinal walls are mating in the transverse plane. The housing receives input shaft (16) with pinion (22), side shaft (17) with pinions (23)-(25), intermediate shaft (19), output shaft (18), and three-link planet mechanism (37) with the device for its locking and connecting its link with the reactive gear member (38) connected with housing (1). Shafts (16)-(19) with pinions and planet mechanism (37) are arranged in the single space between front (5) and rear (10) outer walls of housing (1) which define supports for the shafts.

EFFECT: decreased sizes and reduced metal consumption.

4 cl, 4 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: transport engineering; vehicle transmissions.

SUBSTANCE: proposed gearbox contains input shaft 2 and output shaft 4 arranged in parallel. Four gears 9, 11, 12, 19 are united to form cluster by shaft 3. Gears 16-18 of output shaft 4 are in pair meshing with gears 9-12 of cluster. Gear 19 of cluster engages with gear 22 of output shaft through idler gear or cluster of two reverse gears 21-21. Two shifter sleeves 32, 33 are installed on hubs of output shaft 4. Input shaft 2 is arranged coaxially to four gear cluster shaft. One of gears 6 of input shaft is fixed, and gears 7, 8 are freely fitted. Said three gears are in pair meshing with gears 13-15 freely fitted on output shaft 4. Three two-position twin shifter sleeves A, B, C are installed between four pairs of gears being arranged on gears of parallel shafts. One member is installed on rim of gear of input shaft 2, other member is installed opposite to first member on rim of gear of output shaft 4. Members are intercoupled by three shifter forks 25, 28, 31. Invention provides up to 24 forwards speeds and up to 8 reverse speeds.

EFFECT: enlarged operating capabilities of vehicle.

1 tbl, 2 dwg

FIELD: transport engineering; vehicle transmissions.

SUBSTANCE: proposed gearbox has housing 1, input shaft 2 and output shaft 5 arranged parallel to each other, four gears 9, 11, 12, 17 united into cluster by shaft 3 arranged coaxially with input shaft 2, tubular shaft 20 with gears 12 and 13 freely fitted on output shaft 5 and gears 14, 15, 19 in meshing with cluster gears. Three-position sleeve A installed on input shaft 2 between first and second rows of gears. Three-position shifter sleeves C, D are installed on hubs of out[put shaft 5 between pairs of low gears and row of reverse gears. Gear 8 is freely fitted on input shaft 2 between hub of three-position shifter sleeve A and shaft 3 of gear cluster, said gear being in meshing with gear 13 of tubular shaft 20. Gear 14 which is in meshing with cluster gear 9 is freely fitted near gear 13 on outer shaft 5. Two position twin shifter sleeve B is arranged between second and third rows of gears. Said shifter sleeve consists of two-position members 22 and 23. Member 22 is installed on rim of gear 8 of input shaft 2. Member 23 is installed opposite to first member on rim of gear 14 of output shaft 5. Members are intercoupled by shifter fork 24. Invention provides up to 12 forwards speeds and up to reverse speeds.

EFFECT: enlarged operating capabilities of vehicle owing to increased number of forward and reverse speeds.

1 tbl, 2 dwg

FIELD: transport engineering; vehicle transmissions.

SUBSTANCE: proposed gearbox has housing 1, drive shaft 2, main shaft 3 and countershaft 4. Drive shaft 2 and main shaft 3 are installed coaxially. Countershaft 4 is arranged in parallel with shafts 2 and 3. Gears 9-12 of countershaft 4 are engaged in pairs with gears 15-18 freely fitted on main shaft 3. Low-speed gears 10-12 and reverse gear 19 are secured on countershaft 4. Reverse idler gear 20 s arranged on axle 5 between countershaft 4 and main shaft 3. Tubular shaft 13 with gears 7 and 8 is installed on countershaft 4. Gears 7 and are in meshing with gears 6, 14 freely fitted on drive shaft 2 and main shaft 3. Hub of three position shifter sleeve A is secured on drive shaft 2. Three-position shifter sleeves D, E are arranged on hubs main shaft 3 at gearbox outlet between row of reverse gears and three pairs of low-speed gears. Two two-position twin shifter sleeves B and C, each consisting of two-position members, are placed between second, third and fourth rows of gears. Said members are fitted on gears of adjacent rows of parallel shafts and are interconnected by shifter forks 27, 30. Invention provides up to 24 forwards speeds and up to 8 reverse speeds.

EFFECT: enlarged operating capabilities of vehicle owing to increased number of forwards and reverse speeds.

1 tbl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: planet mechanism comprises solar pinion (43), carrier (41) with satellites (42), gear wheel (39) with synchronizers (54) and (55), and ring spring pusher (61) of the synchronizer that cooperates with teeth (48) of wheel (39). Pusher (61) is interposed between satellites (42) and synchronizer (54). Teeth (48) of wheel (39) in the zone of cooperation with pusher (61) are provided with transverse grooves (62-64).

EFFECT: reduced axial size.

6 cl, 10 dwg

FIELD: transport engineering.

SUBSTANCE: proposed multi-speed gearbox has housing 1, input shaft 2 and output shaft 4 arranged in parallel. Gear 6 is fixed, and gears 7 and 8 are installed for sliding on input shaft 2. gears 9, 11, 12, 19 are combined into cluster by shaft 3. Gears 6-12 are engaging in pairs with gears 13-18 freely fitted on output shaft 4. Three two-position twin shifter sleeves A, B and C are installed between four pairs of gears 6-13, 7-14, 8-15 and 9-16. Each shifter sleeve consists of two-position members located on gears of adjacent rows of parallel shafts intercoupled by shifter for. Member 23 is installed on rim of hear 7 of input shaft 2, and member 24 is installed opposite to first member on rim of gear 13 of output shaft 4. Two shifter sleeves D and C are installed on hubs of output shaft 4 between two pairs of low gears and reverse gear.

EFFECT: enlarged operating capabilities of vehicle owing to increased number of speeds.

1 tbl, 2 dwg

Gear box // 2267675

FIELD: mechanical engineering.

SUBSTANCE: gear box comprises housing (1), shafts (16), (17), (18), and (19) with pinions, and three-sprocket planet mechanism (37) provided with a device for its locking. Crown wheel (39) of the planet mechanism is connected with the reaction gearing member (38) mounted on the inner surface of back outer wall (10) of the housing.

EFFECT: reduced sizes.

5 cl, 4 dwg

Up!