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    • 24. 发明授权
    • Pivot mechanism for sod cutting machine
    • 锯切机的枢轴机构
    • US4621696A
    • 1986-11-11
    • US594000
    • 1984-03-27
    • Gerardus J. Brouwer
    • Gerardus J. Brouwer
    • A01B45/04
    • A01B45/04
    • A sod harvesting machine travels forwardly along a path of travel and has a sod cutting head pivotally connected to a fixed rear frame by a horizontal front pivot shaft having its axis aligned along the path of travel and located close to the ground, and by a pair of rear pivots. The rear pivots are formed by a pair of curved tracks and rollers at the rear of the cutting head, well above the ground, allowing the front of a conveyor to be brought near the ground and close behind the sod cutting knife. The curved tracks have a common center of curvature located on the axis of the front pivot shaft so that they have the same effect as a horizontal rear pivot shaft located close to the ground and aligned with the front pivot shaft.
    • 麦草收割机沿着行进路线向前行进,并且具有通过水平前枢轴枢转地连接到固定后框架的草皮切割头,水平前枢轴具有沿着行进路线对准的并且靠近地面定位的一对 的后枢轴。 后枢轴由切割头后部的一对弯曲的轨道和辊形成,远离地面,允许输送机的前部靠近地面并且紧靠在切割刀的后面。 弯曲的轨道具有位于前枢轴的轴线上的公共曲率中心,使得它们具有与靠近地面并与前枢轴对准的水平后枢轴的相同效果。
    • 26. 发明授权
    • Sod cutting knife with separate side blades
    • Sod切割刀与单独的侧叶
    • US4018287A
    • 1977-04-19
    • US554812
    • 1975-03-03
    • Gerardus J. Brouwer
    • Gerardus J. Brouwer
    • A01B45/04
    • A01B45/04
    • A sod cutting knife having a horizontal undercutting blade, vertical support arms connected to each side of the undercutting blade, and removable side cutting blades mounted at the front of each support arm. The side cutting blades project below the bottom of the undercutting blade to protect the connection between the undercutting blade and the support arms against wear. The vertical and horizontal extent of the protrusions of the side cutting blades below the undercutting blade is limited to avoid undue resistance to vertical movement of the knife into the ground.
    • 具有水平底切刀片的切割刀具,连接到底切刀片的每一侧的垂直支撑臂和安装在每个支撑臂前部的可移除侧切割刀片。 侧切割刀片突出在底切刀片的底部下方,以保护底切刀片和支撑臂之间的连接免受磨损。 底切刀片下方的侧切割刀片的突起的垂直和水平范围受到限制,以避免对刀具进入地面的垂直运动的过大阻力。