摘要:
An automated mechanical transmission system (10) includes an oil spray type hydraulic clutch (11), a mechanical transmission having a shift cylinder (13), shift valves (15, 16), a select cylinder (14) and select valves (17, 18, 19), a hydraulic system control circuit (20), a clutch oil spray circuit (25), and a clutch/transmission select valve (27). The clutch (11) includes a control cylinder (47) for sandwiching a clutch disk (45) between a pressure plate (46) and a clutch cover (44). The system control circuit (20) includes high and low pressure side hydraulic clutch control lines (21, 22) connected with the control cylinder (47), and a hydraulic transmission control line (23) connected with the shift cylinder (13) and select cylinder (14) through the shift valves (15, 16) and select valves (17, 18, 19). A pressure control valve (28) actuated by a pilot valve (29) is disposed at the low pressure side clutch control line (22) and adjusts oil pressure of the hydraulic circuit to actuate the clutch (11) to gear shift the transmission. A valve (26) controls the flow of oil sprayed to the clutch disk (45) according to each state of the clutch (11).
摘要:
[Purpose] To improve confortableness of occupants in a cab. [Solving Means or Measures] A horizontal shaft 6 attached to cab hinge brackets 4 on a chassis 3 is connected to tilt hinge brackets 7 attached to a cab 5 tiltably supported by the horizontal shaft 6 through front link levers 17 in such a manner that straight line L1 interconnecting pivots on each of the the front link levers declines toward backward of a vehicle when the cab is kept horizontal. Brackets 19 attached to a rear arch 12 on the chassis 3 are connected to brackets 22 attached to a floating bar 13 on a back surface of the cab 5 through control links 21, respectively, in such a manner that line interconnecting pivots on each of the control links 21 declines toward backward of the vehicle when the cab 5 is kept horizontal. Parallelogram linkages are provided by the front link levers 17 and the control links 21.
摘要:
[Purpose] To improve confortableness of occupants in a cab. [Solving Means or Measures] A horizontal shaft 6 attached to cab hinge brackets 4 on a chassis 3 is connected to tilt hinge brackets 7 attached to a cab 5 tiltably supported by the horizontal shaft 6 through front link levers 17 in such a manner that straight line L1 interconnecting pivots on each of the the front link levers declines toward backward of a vehicle when the cab is kept horizontal. Brackets 19 attached to a rear arch 12 on the chassis 3 are connected to brackets 22 attached to a floating bar 13 on a back surface of the cab 5 through control links 21, respectively, in such a manner that line interconnecting pivots on each of the control links 21 declines toward backward of the vehicle when the cab 5 is kept horizontal. Parallelogram linkages are provided by the front link levers 17 and the control links 21.
摘要:
An automated mechanical transmission system (10) includes an oil spray type hydraulic clutch (11), a mechanical transmission having a shift cylinder (13), shift valves (15, 16), a select cylinder (14) and select valves (17, 18, 19), a hydraulic system control circuit (20), a clutch oil spray circuit (25), and a clutch/transmission select valve (27). The clutch (11) includes a control cylinder (47) for sandwiching a clutch disk (45) between a pressure plate (46) and a clutch cover (44). The system control circuit (20) includes high and low pressure side hydraulic clutch control lines (21, 22) connected with the control cylinder (47), and a hydraulic transmission control line (23) connected with the shift cylinder (13) and select cylinder (14) through the shift valves (15, 16) and select valves (17, 18, 19). A pressure control valve (28) actuated by a pilot valve (29) is disposed at the low pressure side clutch control line (22) and adjusts oil pressure of the hydraulic circuit to actuate the clutch (11) to gear shift the transmission. A valve (26) controls the flow of oil sprayed to the clutch disk (45) according to each state of the clutch (11).