摘要:
A hydromechanical transmission 11 includes a hydraulic unit 23 and a gear unit 24. The gear unit 24 includes a first gear unit housing 29a defining a first sump 37a having a first set of gears 71. A second gear unit housing 29b defines a substantially smaller second sump 37b having a second set of gears 78, 79. An input shaft 62 extends longitudinally into the first sump 37a, and an output shaft 63 extends longitudinally from the second sump 37b. The longitudinal axes of the input and output shafts are substantially coaxial. A first hydraulic pump motor unit drive shaft 44 extends into the first sump 37a and is drivingly connected with the first set of gears, and a second hydraulic pump motor unit drive shaft 45 extends through the first sump 37a and into the second sump 37b and is drivingly connected with the second set of gears.
摘要:
A hydromechanical transmission 11 includes a hydraulic unit 23 and a gear unit 24. The gear unit 24 includes a first gear unit housing 29a defining a first sump 37a having a first set of gears 71. A second gear unit housing 29b defines a substantially smaller second sump 37b having a second set of gears 78, 79. An input shaft 62 extends longitudinally into the first sump 37a, and an output shaft 63 extends longitudinally from the second sump 37b. The longitudinal axes of the input and output shafts are substantially coaxial. A first hydraulic pump motor unit drive shaft 44 extends into the first sump 37a and is drivingly connected with the first set of gears, and a second hydraulic pump motor unit drive shaft 45 extends through the first sump 37a and into the second sump 37b and is drivingly connected with the second set of gears.
摘要:
A method of assembly 140 for a hydromechanical powersplit transmission 11 and a method of disassembly and repair 140 includes providing a connecting plate 25 at step 140a. Primary and secondary pump motor unit drive shafts 44, 45 and rotating groups 42a, 42b, 43a, 43b and housing 26 are assembled onto the connecting plate 25 at steps 140b-140d to provide a hydraulic unit 23 on one side 23a of the connecting plate 25 for the transmission 11. Primary drive gear 76 and planetary gear set 71 and front gear housing 29a are assembled onto connecting plate 25 at steps 140e-140h. Secondary drive gears 78 and 79 and rear gear housing 29b and valves 53, 54, 55 and 56 are assembled onto connecting plate 25 at steps 140i-140k to provide a gear unit 24 for the transmission 11 that is assembled integrally with the hydraulic unit 23.
摘要:
An actuator system and method (10) includes a blow out preventer (11), a hydraulic motor (12), a gear box (13) intermediate hydraulic motor (12) and blow out preventer (11), and a position indicator (14). Gear box (13) has an input (19), an output (20), and a gear set (23). Gear set (23) is biased by a spring (33) acting on a piston (31) to a default high range gear ratio when blow out preventer (11) is open, to provide maximum closure/lock speed. Gear set (23) is moved by a hydraulic command signal acting on piston (31) to a low range gear ratio when blow out preventer (11) is closed/locked, to provide maximum torque to move blow out preventer (11) toward its open position. Position indicator (14) shows the actual position of blow out preventer (11) independent of the number of turns of input (19) to move the blow out preventer.
摘要:
An actuator system and method (10) includes a blow out preventer (11), a hydraulic motor (12), a gear box (13) intermediate hydraulic motor (12) and blow out preventer (11), and a position indicator (14). Gear box (13) has an input (19), an output (20), and a gear set (23). Gear set (23) is biased by a spring (33) acting on a piston (31) to a default high range gear ratio when blow out preventer (11) is open, to provide maximum closure/lock speed. Gear set (23) is moved by a hydraulic command signal acting on piston (31) to a low range gear ratio when blow out preventer (11) is closed/locked, to provide maximum torque to move blow out preventer (11) toward its open position. Position indicator (14) shows the actual position of blow out preventer (11) independent of the number of turns of input (19) to move the blow out preventer.