Double clutch gearbox with standby engagement system

FIELD: transport engineering; automatic transmissions.

SUBSTANCE: proposed gearbox with two multidisk clutches contains two coaxial drive shafts arranged one inside the other, with fitted-on drive pinions of even and odd speeds. Gearbox is furnished additionally with standby clutch engagement system including part of circuit of working brake system consisting of brake pedal and master brake cylinder with possibility of connection through two position cock-distributor with underpiston space of working cylinder of standby clutch engagement system whose behind-the-piston space is coupled with engagement booster of one of clutches.

EFFECT: increased reliability and provision of mobility of vehicles.

1 dwg

 

The invention relates to the transport industry, in particular to automatic transmissions.

Known transmission with two multi-disc clutches containing two coaxial shaft leading, placed one inside the other, mounted with the leading gears odd and even gears are enclosed in mesh with constant mesh gears corresponding to the gears, having the ability rigid connection with the driven shaft through the synchronizer. Clutch have a hydraulic drive enable by means of a flow of working liquid under the pressure created by an electric pump, booster packages disks [Ivanov A.N., Solntsev A.N., Gajewski V.V. and others. Fundamentals of car design. - M.: OOO "publishing house" "driving"", 2005. - p. 166.: ill.].

The disadvantages of the known constructions gearbox with double clutch is the fact that in case of failure of the electric pump drive enable clutch or malfunction of the supply system of the vehicle eliminates the possibility of including a clutch, which entails breaking of the flow of power from the engine to the transmission and, as a consequence leads to loss of mobility of the vehicle, and cannot start the engine with a tug.

The technical is the ski is aimed at improving reliability and maintaining the mobility of the vehicle, equipped transmission with dual multi-disk clutch, in case of failure of the electric pump drive enable clutch or malfunction of the supply system of the vehicle by allowing independent movement, as well as start the engine of the tow through the use of a backup system on the clutch.

The technical result is achieved by the fact that the gearbox with two multi-disc clutches containing two coaxial shaft leading, placed one inside the other, mounted with the leading gears odd and even gears are enclosed in mesh with constant mesh gears corresponding to the gears, having the ability rigid connection with the driven shaft through the synchronizer, it is additionally equipped with a backup system enable the clutch, which includes part of the contour of the working brake system comprising a brake pedal and master cylinder, having the ability to connect via the appropriate section of the two-position valve valve with podpornoy cavity of the working cylinder back the system on the clutch, the cavity behind the piston of which is connected with the booster enable one of the clutches, and the edge of the piston of the working cylinder reserve the first system on the clutch in the initial position is located directly in front of the channel for supplying the working fluid from the main system on the clutch.

The distinguishing characteristic of the prototype is that transmission with double clutch is additionally equipped with a backup system enable the clutch, which includes part of the contour of the working brake system comprising a brake pedal and master cylinder, having the ability to connect via the appropriate section of the two-position valve valve with podpornoy cavity of the working cylinder backup system on the clutch, the cavity behind the piston of which is connected with the booster enable one of the clutches, and the edge of the piston of the working cylinder backup system on the clutch in the initial position is located directly in front of the channel for supplying the working fluid from the main system on the clutch.

Schematic diagram of the gearbox with dual clutch equipped with a backup system enable represented in the drawing.

Transmission with dual clutch equipped with a backup system enable, includes a multi-stage transmission 1, the dual clutch 2, a backup system enable clutch, consisting of a brake pedal 6, the brake master cylinder 9, which is hydraulically connected to an on / off valve-the valve 8 with the arm 5, one section of which is connected with the drive circuit braking system, and the other is - with a working cylinder backup system on the clutch 9, the booster pack drives a corresponding number of gears 10 and pipelines 4.

System backup enable clutch operates as follows.

If necessary movement of the vehicle or start the engine of the tow due to a malfunction of the electric pump drive enable clutch or malfunction of the supply system, the driver moves the lever 5-position crane valve 8 from the initial position of "T"for the proper working of the brake system, in position "C", in which part of the contour of the working brake system including a brake pedal 6 and the main brake cylinder 7, it is reported through the appropriate section of the two-position valve valve 8 with a working cylinder backup system on the clutch 9, the cavity of which is connected with the cavity of the booster pack clutch even number gear 10. Then the driver includes a second transfer or, if necessary, reverse gear, then gently presses on the brake pedal. In this case, brake fluid moves the piston 3 of the working cylinder 9, whereby the booster 10 is achieved, the pressure required to fully activate the clutch, providing reliable communication transmission the engine and thereby the possibility of movement of the vehicle driven to the repair shop, using a spare or auxiliary brake system and start the engine with a tug.

The proposed design of the gearbox with dual clutch equipped with a backup system in turn, can increase the reliability and to preserve the mobility of the vehicle with the dual clutch, by allowing independent movement, and start the engine with a tug in the event of a malfunction of the electric pump drive enable clutch or malfunction of the supply system of the vehicle.

Transmission with two multi-disc clutches containing two coaxial shaft leading, placed one inside the other, mounted with the leading gears odd and even gears are enclosed in mesh with constant mesh gears corresponding to the gears, having the ability rigid connection with the driven shaft through the synchronizer, characterized in that it further has a redundant system include clutch, which includes part of the contour of the working brake system comprising a brake pedal and master cylinder, having the ability to connect via the appropriate section of the two-position valve valve with podpornoy cavity desktop Zilin the RA backup system on clutch, the cavity behind the piston of which is connected with the booster enable one of the clutches, and the edge of the piston of the working cylinder backup system on the clutch in the initial position is located directly in front of the channel for supplying the working fluid from the main system on the clutch.



 

Same patents:

FIELD: transport engineering.

SUBSTANCE: invention relates to power takeoff control devices of special automobiles. Proposed device to control clutch has pneumohydraulic booster and clutch master cylinder. Moreover, device contains additional clutch master cylinder connected to pneumohydraulic booster through hydraulic distributor providing operation of clutch at two modes, namely, traveling and power takeoff ones. Distributor is furnished with mode automatic interlock member. Device contains pickup operating at power takeoff mode in case of overload. Additional clutch master cylinder is provided with makeup tank. Hydraulic distributor can be furnished with mode selector handle or electromagnetic selector. To change over clutch from traveling into power takeoff mode, hydraulic distributor is furnished with electropneumatic drive with pushbutton in cab to switch on electromagnetic valve. Hydraulic distributor is furnished with hydropneumatic drive operated by clutch pedal to change over clutch operation modes.

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FIELD: mechanical engineering; excavators.

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2 dwg

FIELD: motor transport engineering, in particular, step-by-step planet gear boxes for vehicles.

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FIELD: transport engineering.

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1 dwg

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FIELD: transport engineering; automatic multispeed planetary transmission.

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1 dwg

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FIELD: transport engineering.

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1 dwg

FIELD: transport engineering.

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FIELD: transport engineering hydromechanical transmissions.

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EFFECT: enlarged operating capabilities of hydromechanical transmission.

1 dwg

FIELD: mechanical engineering.

SUBSTANCE: hydromechanical gear box comprises crankcase (1), fluid transformer (2), input link (3), output link (4), planet reduction gear, two friction clutches, and four friction brakes. The planet reduction gear is made of four planet rows. First planet row is made of solar pinion (5), carrier (6) of satellites, and corona pinion (7). Second planet row is made of solar pinion (8), carrier (9) of satellites, and corona pinion (10). Third planet row is made of solar pinion (11), carrier (12) of satellites, and corona pinion (13). Fourth planet row is made of solar pinion (14), carrier (15) of satellites, and corona pinion (16). Solar pinion (5) is connected with crankcase (1) of the gear box via friction brake (17). Friction brake (18) connects interconnected carrier (6) and (9) with crankcase (1). Friction brake (19) connects interconnected corona pinion (10) and solar pinion (14) with crankcase (1). Friction brake (20) connects interconnected carrier (15) and corona pinion (13) with crankcase (1) of the gear box. Output link (3) of the fluid transformer is connected with interconnected corona pinion (13) and carrier (15) via friction clutch (210 and with solar pinion (11) via friction clutch (22). Solar pinion (8) and corona pinion (7) are connected with input link (3).

EFFECT: expanded functional capabilities and prolonged service life.

9 cl, 12 dwg

FIELD: mechanical engineering.

SUBSTANCE: hydromechanical gear box comprises crankcase (1), fluid transformer (2), input link (3), output link (4), planet reduction gear, three friction clutches, and three friction brakes. The planet reduction gear is made of three planet rows. First planet row is made of solar pinion (5), carrier (6) of satellites, and corona pinion (7). Second planet row is made of solar pinion (8), carrier (9) of satellites, and corona pinion. Third planet row is made of solar pinion (11), carrier (12) of satellites, and corona pinion (13). Input link (3) is connected with interconnected solar pinion (8) and solar pinion (11) through friction clutch (14) and with interconnected carrier (9) and (12) through friction clutch (15). Carrier (9) is connected with corona pinion (13) connected with the output link (4) of the gear box through friction clutch (16). Solar pinion (5) is connected with input link (3). Carrier (6) is connected with crankcase (1) of the gear box through friction brake (17). Friction brake (18) connects interconnected carrier (9) and (12) with crankcase (1). Friction brake (19) connects interconnected solar pinion (8) and (11) with crankcase (1).

EFFECT: expanded functional capabilities.

3 cl, 6 dwg

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

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