793B Off-Highway Truck Suspension Cylinder Caterpillar


Suspension Cylinder (Front)

Usage:

793B 1HL
每个前轮由悬架油缸固定。 悬架油缸为油-气动液压油缸。 前悬架油缸为转向连杆的主销。 前悬架油缸还在前轮和机架间提供减震作用。

前悬架油缸的主要部件为油缸和连杆。 油缸固定在机架上。 随着车轮的上下移动,连杆在油缸内自由移动。 连杆随车轮移动。

连杆向上移动




图 1g01971634

前悬架油缸的工作

(1) 油缸

(2) 氮气室

(3) 杆

(4) 孔

(5) 排油单向球

(6) 腔室

(AA) 氮气

(LL) 油

节流孔 (4) 和排油单向球 (5) 控制油从腔室 (2) 到油室 (6) 的流速。

前轮感测到冲击力时,前轮将向上移动。 此运动导致连杆 (3) 在油缸 (1) 内向上移动。 连杆 (3) 的移动压缩腔室 (2) 内的氮气。 油从腔室 (2) 经由节流孔 (4) 和排油单向球 (5) 流向油室 (6) 。

腔室 (2) 内氮气的压缩提供减震作用。 悬架油缸有效降低机架感测到的冲击力大小。

连杆向下移动




图 2g01971834

前悬架油缸的工作

(1) 油缸

(2) 氮气室

(3) 杆

(4) 孔

(5) 排油单向球

(6) 腔室

(AA) 氮气

(LL) 油

随着冲击力的消失,悬架油缸的动作改变方向。 车轮和前桥的重量以及室 (2) 内的氮气压力将杆 (3) 推出气缸 (1) 。 随着连杆 (3) 向下移动,油室 (6) 内的油容量下降,从而产生油压。 油的流动导致排油单向球 (5) 关闭。 油室 (6) 内的油压使排油单向球 (5) 保持关闭状态。 此时,油只能经由节流孔 (4) 排向腔室 (2) 。

随着连杆 (3) 下移,下部节流孔关闭,且流向腔室 (2) 的油量降低。 其他节流孔随连杆 (3) 的下移缓慢关闭。 这使流向腔室 (2) 的油量进一步降低。 通过缓慢降低到腔室 (2) 的排油量,悬架油缸可降低连杆 (3) 的下移速度。 从而降低了连杆 (3) 到达油缸 (1) 底部产生的冲击力。

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