Powershift gearbox for construction machines, especially for a tractor backhoe loader and a telescopic handler

A multi-geared power shift transmission of a telescopic handler and an excavator loader which provides improved installation flexibility, the transmission comprising:

• a torque converter (2);
• a drive shaft (3) being drivingly coupled to the torque converter (2);
• a first counter shaft (5);
• a second counter shaft (6);
• a third counter shaft (7);
• a fourth counter shaft (17);
• and
• an output shaft (4) for supplying driving power;
• and each of the drive shaft (3), the output shaft (4), the first counter shaft (5), the second counter shaft (6), the third counter shaft (7) and the fourth counter shaft (17) having a gear unit comprising at least one fixed gear wheel, an idler gear wheel and a shift clutch (8, 9, 10, 11, 12, 13) for coupling the idler gear wheel to the respective shaft such that up to six forward gear ratios and three reverse gear ratios can be engaged;
• the gear unit of the drive shaft (3) is only directly drivingly engagable with the gear unit of the first counter shaft (5) and the gear unit of the fourth counter shaft (17);
• the gear unit of the first counter shaft (5) is only directly drivingly engagable with the gear unit of the drive shaft (3), the gear unit of the fourth counter shaft (17) and the gear unit of the second counter shaft (6);
• the gear unit of the second counter shaft (6) is only directly drivingly engagable with the gear unit of the first counter shaft (5) and the gear unit of the output shaft (4);
• the gear unit of the third counter shaft (7) is only directly drivingly engagable with the gear unit of the output shaft (4);
• the gear unit of the fourth counter shaft (17) is only directly drivingly engagable with the gear unit of the drive shaft (3) and the gear unit of the first counter shaft (5);
• and
• the gear unit of the output shaft (4) is directly drivingly engagable with at least the gear unit of the second counter shaft (6) and the gear unit of the third counter shaft (7);
• whereby that the transmission provides improved installation flexibility;
• and
• an auxiliary drive (16), for driving additional equipment, extends through the drive shaft (3).

A multi-geared power shift transmission for a construction machine providing improved installation flexibility, the transmission comprising:

• a torque converter (2);
• a drive shaft (3) being drivingly coupled to the torque converter (2);
• a first counter shaft (5, 6, 7);
• a second counter shaft (5, 6, 7);
• a subsequent counter shaft (17);
• and
• an output shaft (4) for supplying driving power;
• and each of the drive shaft (3), the output shaft (4), the first counter shaft (5, 6, 7), the second counter shaft (5, 6, 7), the subsequent counter shaft (17) having a gear unit comprising at least one fixed gear wheel, an idler gear wheel and a shift clutch (8, 9, 10, 11, 12, 13) for coupling the idler gear wheel to the respective shaft such that four forward gear ratios and two reverse gear ratios can be engaged;
• the gear unit of the drive shaft (3) is only directly drivingly engagable with the gear unit of the first counter shaft (5, 6, 7) and the gear unit of the subsequent counter shaft (17);
• the gear unit of the first counter shaft (5, 6, 7) is only directly drivingly engagable with the gear unit of the drive shaft (3), the gear unit of the subsequent counter shaft (17) and the gear unit of the second counter shaft (5, 6, 7);
• the gear unit of the second counter shaft (5, 6, 7) is only directly drivingly engagable with the gear unit of the first counter shaft (5, 6, 7) and the gear unit of the output shaft (4);
• the gear unit of the subsequent counter shaft (17) is only directly drivingly engagable with the gear unit of the drive shaft (3) and the gear unit of the first counter shaft (5, 6, 7);
• and
• the gear unit of the output shaft (4) is directly drivingly engagable with at least the gear unit of the second counter shaft (5, 6, 7).