Transmission for self-propelled working vehicles

Patent · Tue Jun 16 04:00:00 EDT 1987

OSTI ID:6377606

Yamaoka, K; Okada, H

A transmission is described for self-propelled working vehicles, having a speed change mechanism which comprises: first change gears fixedly mounted on a first shaft; second change gears rotatably mounted on a second shaft, the second shaft being arranged in parallel with the first shaft; the second change gears are meshed with the first gears, respectively; key means disposed within the second shaft and slidably axially of the shaft. The key means has a clutch portion biased to move radially outwardly of the second shaft and engageable with each of the second change gears so as to connect same non-rotatably to the second shaft; a shift mechanism operatively connected to the key means for displacing same to operative positions where the second change gears are coupled one at a time to the second shaft by the clutch portion. The shift mechanism includes a change lever for operating same, the improvement comprising: a fluid-actuated clutch operable to interrupt input of power to the speed change mechanism when disengaged; a pump connected to the clutch via a fluid supply path for supplying fluid under pressure so as to engage the clutch; relief valve means connected to the fluid supply path and having a spring for determining fluid pressure applied to the clutch; a based end of the spring is received by a control piston movable axially of the spring between two positions.

• Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd., Amagasaki
• Patent Number(s): US 4673055
• OSTI ID: 6377606
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL
CONTROL EQUIPMENT
DESIGN
EQUIPMENT
FLOW REGULATORS
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
MOTION
OPERATION
PISTONS
PRESSURE CONTROL
PUMPS
RELIEF VALVES
ROTATION
SHAFTS
SPEED REGULATORS
VALVES
VEHICLES