S2050, S3050, S2070, S3070, S2090 and S3090 Shears Caterpillar


Control Manifold - Crossover Relief Valve

Usage:

S3090 B7W


图 1g06209789
典型示例

旋转回路(正常操作)



图 2g01683054
(4) 测试接头
(6) 交叉安全阀
(8) 安全阀
(9) 摆线马达

图 2 演示正常操作。 在此演示中,操作员已启动机器的辅助控制阀 (4)。 阀左侧处于活动状态。 油通过机器的辅助控制阀流向控制阀 (6)。 高压油作用在控制阀内的安全阀 (8) 上。 当油压低于 14000 ± 1000 kPa (2031 ± 145 psi) 时,交叉安全阀保持关闭状态。 同时,油流入摆线马达 (9)。 油会导致马达旋转。 马达旋转导致作业机具旋转。 离开马达的油通过辅助控制阀,流回主机上的液压油箱。

旋转回路(启用控制阀)



图 3g01683116
(4) 测试接头
(6) 交叉安全阀
(8) 安全阀
(9) 摆线马达

图 3 代表安全阀启动时的旋转回路。 在此演示中,操作员已启动机器的辅助控制阀。 阀左侧处于活动状态。 油通过辅助控制阀流向交叉安全阀 (6)。 高压油作用在交叉安全阀内的安全阀 (8) 上。 当交叉安全阀的压力超过 14000 ± 1000 kPa (2031 ± 145 psi) 时,安全阀将打开。 机油通过打开的安全阀流向辅助控制阀,并流回液压油箱。 同时,油流向每个摆线马达 (9)。 安全阀打开时,摆线马达将不工作。

当外力导致液压剪旋转时,交叉安全阀将保护马达和液压剪免受损坏。

Caterpillar Information System:

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