Reversing double-flow gearbox arrangement with two branches of output flow

Abstract

Arrangement of reversing double-flow gearbox for motor vehicles and construction machines, with two branches of output flow, consisting of an input shaft (13) equipped with a tooth wheel, engaged with a tooth wheel of a first disc clutch (1) and with a tooth wheel of a second disc clutch (2), wherein an output shaft (11) of the first disc clutch (1) houses a first set (3) of tooth wheels and a third set (5) of tooth wheels that are engaged through a first synchronization clutch (61) and a second synchronization clutch (62) with a set of tooth wheels arranged on the output shaft (10) of the gearbox, while an output shaft (12) of the second disc clutch (2) houses a second set (4) of tooth wheels and a fourth set (7) of tooth wheels that are engaged through a third synchronization clutch (63) and a fourth synchronization clutch (64) with a set of tooth wheels arranged on the output shaft (10) of the gearbox, wherein the output shaft (11) of the first disc clutch (1) and the output shaft (12) of the second disc clutch (2) are inter-connected by an inserted set of gears (8) with a gearing synchronization clutch (9) arranged on the output shaft (12) of the second clutch disc (2) or on output shaft (11) of the first disc clutch (1).

Claims

1. An arrangement of a reversing double-flow gearbox, for motor vehicles and construction machines, with two branches of output flow, the arrangement comprising: consisting of the an input shaft (13) and an output shaft (10) of the gearbox, arranged co-axially, wherein the drive from the input shaft (13) is interconnected to a first disc clutch (1) and a second disc clutch (2), wherein the output shaft (10) of the gearbox is interconnected to a first synchronisation clutch (61) for gearing the gear levels of the first branch of the output flow, a second synchronisation clutch (62) for gearing the gear levels of the second branch of the output flow, and a third synchronisation clutch (63) for gearing on one side of the arrangement the gear level of the first branch of the output flow and gearing with the other side of the arrangement the gear level of the second branch of the output flow; on the first branch of the output flow, an output shaft (11) of the first disc clutch (1) is interconnected to a first set (3) of tooth wheels having a first tooth wheel (31), a second tooth wheel (32) and a third tooth wheel (33); on the second branch of the output flow, an output shaft (12) of the second disc clutch (2) is interconnected to a second set (4) of tooth wheels having a first tooth wheel (41), a second tooth wheel (42) and a third tooth wheel (43), wherein the second and third tooth wheels (32, 33) of the first set (3) of tooth wheels and the first, second, and third tooth wheels (41, 42, 43) of the second set (4) of tooth wheels are engaged with one or more tooth wheels arranged on the output shaft (10) of the gearbox which are interconnected with one or more of the first synchronization clutch, the second synchronization clutch, and/or the third synchronization clutch; a tooth wheel (14) engaged with the first tooth wheel (31) of the first set (3) of tooth wheels, whereby the output shaft (11) of the first disc clutch (1) is interconnected to the first synchronization clutch (61) to drive the first branch of the output flow; and an inserted tooth wheel (81) gearing with a synchronisation clutch (9) which is interconnected to and drives the output shaft (12) of the second disc clutch (2).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be explained in detail using a drawing with FIG. 1 showing a scheme of the kinematic arrangement of reversing 8 double-flow gearbox and FIG. 2 showing a scheme of the kinematic arrangement of reversing 6 double-flow gearbox.

EXEMPLARY EMBODIMENT OF THE INVENTION

(2) The arrangement of the double-flow reversing gearbox according to this invention will be explained using favourable realisations, which do not have any limiting influence from the point of view of protection extent.

(3) The sample arrangement of the reversing 8 double-flow gearbox is shown in FIG. 1. The drive from the input shaft 13 leads to the first disc clutch 1 and the second disc clutch 2. The first branch of the flow consists of the first disc clutch 1 interconnected by output shaft 11 of the first disc clutch 1 with the first synchronisation clutch 61 equipped with the first set 3 of tooth wheels and the second synchronisation clutch 62 equipped with the third set 5 of tooth wheels that are engaged with tooth wheels organised on the output shaft 10. The second branch of the consists of the disc clutch 2 interconnected by output shaft 12 of the second disc clutch 2 with the third synchronisation clutch 63 equipped with the second set 4 of tooth wheels and the fourth synchronisation clutch 64 equipped with the fourth set 7 of tooth wheels also engaged with tooth wheels organised on the output shaft 10.

(4) The inserted set of tooth wheels 8 with its synchronisation clutch 9 interconnects the output shaft 11 of the first disc clutch 1 and the output shaft 12 of the second disc clutch 2.

(5) The principle of reversing is as follows. The vehicle goes forward and the drive is performed e.g. by the first branch of the flow with included first disc clutch 1. So there is engaged the first disc clutch 1 and there is included the first synchronisation clutch 61 or the second synchronisation clutch 62, organised on the output shaft 11 of the first disc clutch 1. Then, movement is transferred by one tooth wheel of the first set 3 of tooth wheels or the third set 5 of tooth wheels, engaged with tooth wheels arranged on the output shaft 10. The second disc clutch 2 is disconnected, even the third synchronisation clutch 63 and the fourth synchronisation clutch 64 in the second branch of the flow are not shifted and the synchronisation clutch 9 is not shifted as well. After inclusion of the synchronisation clutch 9 the inserted set of wheels 8 drives even the output shaft 12 of the second disc clutch 2, but in opposite direction of rotation. After consequent disconnection of the first disc clutch 1 and connection of the second disc clutch 2 the reversing is performed, i.e. reverse direction of revolutions of the output shaft 10 of the gearbox for given gear level shifted by the first synchronisation clutch 61 or the second synchronisation clutch 62, in the first branch of the drive. In this way, there is arranged reversing for all the gear levels performed by the first set of 3 tooth wheels or the third set 5 of tooth wheels. In case of the forward movement to be performed by the second branch of the flow with the second disc clutch 2 the activity is analogical, the shifted third synchronisation clutch 63 equipped with the second set 4 of tooth wheels or shifted fourth synchronisation clutch 64 equipped with the fourth set 7 of tooth wheels use one of the above stated tooth wheels to transfer motion to the set of tooth wheels organised on the output shaft of the gearbox 10. Based on repeated shifting of the synchronisation clutch 9 with consequent disconnection of the second disc clutch 2 and connection of the first disc clutch 1 there is performed reversing of revolutions of the output shaft of the gearbox 10 for the given gear level.

(6) The sample arrangement of the reversing 6 double-flow gearbox is shown in FIG. 2. The arrangement of the input shaft 13 and output shaft of the gearbox 10 is coaxial. The drive from the input shaft 13 leads to the first disc clutch 1 and the second disc clutch 2. The first branch of the flow consists of the first disc clutch 1 interconnected by output shaft 11 of the first disc clutch 1 and via the tooth wheel 14 with the first set 3 of tooth wheels, making the first tooth wheel 31, the second tooth wheel 32 and the third tooth wheel 33. The second branch of the consists of the disc clutch 2 interconnected by output shaft 12 of the second disc clutch 2 with the second set 4 of tooth wheels, making the first tooth wheel 41, the second tooth wheel 42 and the third tooth wheel 43. The second and the third tooth wheel 31, 32 of the first set 3 of tooth wheels as well as the first, the second and the third tooth wheels 41, 42, 43 of the second set 4 of tooth wheels are engaged with tooth wheels organised on the output shaft 10 of the gearbox and they are interconnected with the output shaft 10 of the gearbox via the first synchronisation clutch 61 shifting the gear levels of the first branch of the flow, the second synchronisation clutch 62 shifting the gear levels of the second branch of the flow and the third synchronisation clutch 63 shifting with one side the gear level of the first branch of the flow and with the other side the gear level of the second branch of the flow.

(7) The inserted tooth wheel 81 is engaged with the first tooth wheel 31, which is further engaged with the tooth wheel 14 and via shifted synchronisation clutch 9 there is interconnected the output shaft 11 of the first disc clutch 1 and the output shaft 12 of the second disc clutch 2.

(8) The principle of reversing is as follows. The vehicle goes forward and the drive is performed e.g. by the first branch of the flow with included first disc clutch 1. So there is engaged the first disc clutch 1 and revolutions are then transferred directly from the output shaft 11 of the first disc clutch 1 to the output shaft 10 of the gearbox or via the tooth wheel 14 to the first set 3 of tooth wheels consisting of the first, the second and the third tooth wheel 31, 32 and 33 to co-engaged wheels interconnected by the first and the third synchronisation clutch 61 and 63 with the output shaft 10 of the gearbox. The second disc clutch 2 is disconnected, even the second synchronisation clutch 62 in the second branch of the flow is not shifted and the synchronisation clutch 9 is not shifted as well. After inclusion of the synchronisation clutch 9 the inserted set of wheels 81 drives even the output shaft 12 of the second disc clutch 2, but in opposite direction of rotation. After consequent disconnection of the first disc clutch 1 and connection of the second disc clutch 2 the reversing is performed, i.e. reverse direction of revolutions of the output shaft 10 of the gearbox for given gear level shifted by the first synchronisation clutch 61 or the third synchronisation clutch 63 in the first branch of the drive. In this way, there is arranged reversing for all the gear levels performed by the first branch of the flow. In case of the forward movement to be performed by the second branch of the flow with the second disc clutch 2 the activity is analogical, the movement is transferred by the second set 4 of tooth wheels consisting of the first, the second and the third tooth wheel 41, 42, 43 and shifted second synchronisation clutch 62 or the third synchronisation clutch 63 it is lead to the output shaft 10 of the gearbox. Based on repeated shifting of the synchronisation clutch 9 with consequent disconnection of the second disc clutch 2 and connection of the first disc clutch 1 there is performed reversing of revolutions of the output shaft of the gearbox 10 for the given gear level.

INDUSTRIAL APPLICABILITY

(9) This solution can be used with tractors, construction machines and other mobile means.

LIST OF RELATION MARKS

(10) 1 first disc clutch 2 second disc clutch 3 first set of tooth wheels 31 first tooth wheel 32 second tooth wheel 33 third tooth wheel 4 second set of tooth wheels 41 first tooth wheel 42 second tooth wheel 43 third tooth wheel 5 third set of tooth wheels 61 first synchronisation clutch 62 second synchronisation clutch 63 third synchronisation clutch 64 fourth synchronisation clutch 7 fourth set of tooth wheels 8 inserted set of wheels 81 inserted tooth wheel 9 synchronisation clutch 10 output shaft of the gearbox 11 output shaft of the first disc clutch 12 output shaft of the second disc clutch 13 input shaft 14 tooth wheel