这挖机。肯定是国产的哈哈
防爆阀,防止胶管爆掉后动臂下落的
管路防爆阀,欧洲要求挖掘机大臂管子破裂时,下降的速度要在安全范围内。
ISO 8643:1988
Excavators, with lifting devices for >1000 kg of load, needs a safety system on the boom cylinders.
The load speed (< 200 mm/s) may double itself with hose burst maximally.
The drop rate of the load shall not exceed 10 mm/s.
The operation of the device shall not detract from the normal response and stability.
The valve has to be fitted directly on the cylinder – without hose
大臂保持阀,你可以网上搜搜,比平衡阀多集成了溢流阀和先导阀芯,功能差不多。
平衡阀
防爆管阀, 像Oil Controll
是为了节能用的,大臂下行有能量
大臂保持阀!防止出现留臂!
应该是防爆阀,但是有谁知道它跟平衡阀的区别?
应该是防爆阀,挖机调速都是用阀芯,很少用平衡阀,