EP0076591A1 — A transverse gearbox for a vehicle with an in-lin…

Claim 1

Independent Claim 62 words

A transverse gearbox for a vehicle with an in-line engine, having a longitudinal engine shaft (312), a transverse shaft (317) drivable from the engine shaft and driving a change-speed gear (307) disposed to one side of the engine shaft, characterised in that the transverse shaft (317) is received within a hollow shaft (319) which transmits the drive thereto from the engine shaft.

Claim 2

Dependent Claim 62 words

A transverse gearbox for a vehicle with an in-line engine, having a longitudinal engine shaft (312), a transverse shaft (317) drivable from the engine shaft and driving a change-speed gear (307) disposed to one side of the engine shaft, characterised in that the transverse shaft (317) is received within a hollow shaft (319) which transmits the drive thereto from the engine shaft.

Claim 3

Dependent Claim 40 words

A gearbox according to claim 1, characterised in that the hollow shaft (319) is coupled to the transverse shaft (317) by a range gear (305) disposed on the opposite side of the engine shaft (312) to the change-speed gear (307).

Claim 4

Dependent Claim 147 words

A transverse gearbox for a vehicle with an in-line engine comprising rotating components mounted at least mainly on first and second parallel transverse shaft lines (I,II), a longitudinal engine shaft (312) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), an epicyclic range gear (303) on one of the shaft lines and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), characterised in that the bevel gears (311,313,315) drive a hollow shaft (319) which drives the epicyclic range gear (305) which in turn drives the change-speed gear input shaft (.317) which extends through the hollow shaft (315) from the epicyclic range gear (305) to the change speed gear (307).

Claim 5

Dependent Claim 147 words

A transverse gearbox for a vehicle with an in-line engine comprising rotating components mounted at least mainly on first and second parallel transverse shaft lines (I,II), a longitudinal engine shaft (312) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), an epicyclic range gear (303) on one of the shaft lines and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), characterised in that the bevel gears (311,313,315) drive a hollow shaft (319) which drives the epicyclic range gear (305) which in turn drives the change-speed gear input shaft (.317) which extends through the hollow shaft (315) from the epicyclic range gear (305) to the change speed gear (307).

Claim 6

Dependent Claim 36 words

A transverse gearbox according to claim 3, characterised by a creep gear (306) on the first shaft line (I) and means (321) for coupling the creep gear to the input of the range selector gear (305).

Claim 7

Dependent Claim 101 words

A transverse gearbox according to claim 4, wherein the bevel gears comprise a drive bevel gear (311) meshing with first and second oppositely rotating bevel gears (313,315) rotatably mounted relative to the hollow shaft (319), forward and reverse clutches (303, 304) being disposed between the first and second bevel gears respectively and the hollow shaft (319), characterised in that the creep gear (306) is an epicyclic gear which reverses the sense of rotation and in that the said coupling means is a creep clutch (321) between the said second bevel gear (315) and the input of the range selector gear (305).

Claim 8

Dependent Claim 45 words

6 . A transverse gearbox according to claim 3 or 4, characterised in that the range selector gear (305) is a two-stage epicyclic gear with an input annulus (334) fast with the clutch shaft (319) and means (325,327) for selectively bringing the stages into action.

Claim 9

Dependent Claim 27 words

A transverse gearbox according to claim 6 , characterised by a direct drive clutch (323) between the input annulus (334) and the change-speed gear input shaft (317).

Claim 10

Dependent Claim 30 words

A transverse gearbox according to claim 5 and 6 , characterised in that the said input annulus (334) is fast with an output annulus (336) of the creep gear (306).

Claim 11

Dependent Claim 45 words

A transverse gearbox according to claim 8 , characterised in that the creep gear (306) has a non-rotating planet wheel carrier (338) and in that the creep clutch (321) is between the said second bevel gear (315) and the sun-wheel (340) of the creep gear.

Claim 12

Dependent Claim 117 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel, transverse shaft lines (I,II), a longitudinal engine shaft (312) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), characterised in that the gearbox has a casing formed of two separable parts (301, 302) with a parting plane containing the first and second shaft lines (I and II).

Claim 13

Dependent Claim 117 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel, transverse shaft lines (I,II), a longitudinal engine shaft (312) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), characterised in that the gearbox has a casing formed of two separable parts (301, 302) with a parting plane containing the first and second shaft lines (I and II).

Claim 14

Dependent Claim 41 words

A gearbox according to claim 10,characterised in that the casing parts are a top part (301) and a bottom part (302) and in that the parting plane is inclined between 10° and 60 P to the substantially horizontal engine shaft (312).

Claim 15

Dependent Claim 25 words

A gearbox according to claim 11,characterised in that the parting plane is inclined between 15 0 and 30° to the substantially horizontal engine shaft (312).

Claim 16

Dependent Claim 47 words

A gearbox according to claim 11 or 12, characterised in that a PTO shaft (390) is journalled in the bottom casing part (302) below the two transverse shaft lines (I,II) and is coupled by a PTO clutch (314) and spur gears (388,389) to the engine shaft (312).

Claim 17

Dependent Claim 29 words

A gearbox according to claim 13, characterised in that the PTO clutch (314) and spur gears (388,389) are disposed in a forward bell of the bottom casing part (302).

Claim 18

Dependent Claim 42 words

A gearbox according to claim 13 or 14, characterised by a hollow, front wheel drive shaft journalled on the PTO shaft (390) and coupled at its rear end by a bevel gear (391) to a bevel gear on the output shaft (361).

Claim 19

Dependent Claim 32 words

A gearbox according to claim 15, characterised by a . clutch (392) in the bottom casing part (302) coupling the front wheel drive shaft to a front wheel drive spur gear (393).

Claim 20

Dependent Claim 163 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel, transverse shaft lines (I,II), a longitudinal engine shaft (321) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), gears (308,309) for the two half-shafts respectively flanking the output side of the change-speed gear (307), in that the change-speed gear output shaft (361) is a hollow shaft through which passes a differential shaft (374) connecting first corresponding parts (371, 373) of the epicyclic gears, in that the hollow output shaft (361) connects second corresponding parts (378,379) of the epicyclic gears, and in that third corresponding parts (381,382) are connected to the half-shafts (31) respectively.

Claim 21

Dependent Claim 163 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel, transverse shaft lines (I,II), a longitudinal engine shaft (321) coupled to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear between the output shaft and two half shafts (31) on the second shaft line (II), gears (308,309) for the two half-shafts respectively flanking the output side of the change-speed gear (307), in that the change-speed gear output shaft (361) is a hollow shaft through which passes a differential shaft (374) connecting first corresponding parts (371, 373) of the epicyclic gears, in that the hollow output shaft (361) connects second corresponding parts (378,379) of the epicyclic gears, and in that third corresponding parts (381,382) are connected to the half-shafts (31) respectively.

Claim 22

Dependent Claim 30 words

A transverse gearbox according to claim 17,characterised in that the first, second and third parts of the epicyclic gears are sun wheels (371,372), annuli (378,379) and planet carriers (381,382) respectively.

Claim 23

Dependent Claim 30 words

1 9 . A transverse gearbox according to claim 17 or 18, characterised by a differential lock clutch (384) engagable to lock together two parts (371),381) of one epicyclic gear.

Claim 24

Dependent Claim 136 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel,transverse shaft lines (I,II), a longitudinal engine shaft coupled both to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315) and also to a longitudinal PTO shaft (390) by way of spur gears (388,389), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear (3 08 + 309) between the output shaft (361) and two half-shafts (31) on the second shaft line (II), characterised by a hollow front wheel drive shaft journalled on the PTO shaft (390) and coupled by bevel gears (391) to a rotating component (379) on the second shaft line (II).

Claim 25

Dependent Claim 136 words

A transverse gearbox for a vehicle with an in-line engine, comprising rotating components mounted at least mainly on first and second parallel,transverse shaft lines (I,II), a longitudinal engine shaft coupled both to an input shaft (317) on the first shaft line (I) by way of bevel gears (311,313,315) and also to a longitudinal PTO shaft (390) by way of spur gears (388,389), a change-speed gear (307) between the input shaft (317) and an output shaft (361) on the second shaft line (II), and a differential gear (3 08 + 309) between the output shaft (361) and two half-shafts (31) on the second shaft line (II), characterised by a hollow front wheel drive shaft journalled on the PTO shaft (390) and coupled by bevel gears (391) to a rotating component (379) on the second shaft line (II).

Claim 26

Dependent Claim 142 words

A gearbox especially for transverse mounting in an agricultural or earth-working vehicle with a partial or complete chassis frame, the components of the gearbox being arranged at least to a large extent on two main shaft-lines (I,II) that are parallel to each other and transverse to the input shaft (312) from the engine, a change-speed gear (307) coupling an input shaft (317) on the first shaft line (I) and an output shaft (361) on the second shaft line (II) and a differential gear (308 + 309) being connected to the output shaft for driving half shafts (31) with equalized torque, characterised by a control device (310) for synchronising the change-speed gear by equalizing the rotational speeds, measured by speed sensors (365) ,of the input and output shafts (317,361), the control device producing corresponding control pulses for producing synchronisation of the said shafts.

Claim 27

Dependent Claim 142 words

A gearbox especially for transverse mounting in an agricultural or earth-working vehicle with a partial or complete chassis frame, the components of the gearbox being arranged at least to a large extent on two main shaft-lines (I,II) that are parallel to each other and transverse to the input shaft (312) from the engine, a change-speed gear (307) coupling an input shaft (317) on the first shaft line (I) and an output shaft (361) on the second shaft line (II) and a differential gear (308 + 309) being connected to the output shaft for driving half shafts (31) with equalized torque, characterised by a control device (310) for synchronising the change-speed gear by equalizing the rotational speeds, measured by speed sensors (365) ,of the input and output shafts (317,361), the control device producing corresponding control pulses for producing synchronisation of the said shafts.

Claim 28

Dependent Claim 51 words

A gearbox according to claim 21, characterised in that the control device (310), in the case of changing down, supplies the engine governor with control pulses in the sense of an increase in rotational speed until synchronisation of the mutually associated gear wheels of the next lower gear ratio is attained.

Claim 29

Dependent Claim 70 words

A gearbox according to claim 21 or 22, characterised in that the control device (310), in the case of changing up, emits control pulses for effecting the momentary engagement of the reverse clutch or of one of the brakes (325,327) in the sense of a reduction of rotational speed of the input shaft (317), until synchronisation of the mutually associated gear wheels of the next higher gear ratio is attained.

Claim 30

Dependent Claim 53 words

A gearbox according to any of claims 21 to 23, characterised in that, when synchronisation of the mutually associated gear wheels (351,353) of the change-speed gear is attained, a control pulse is produced from the control device (310) for automatically locking the gear wheel of the next ratio with the input shaft (317).

Claim 31

Dependent Claim 12 words

A tractor comprising a gearbox according to any of the preceding claims.

A transverse gearbox for a vehicle with an in-line engine

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