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    • 8. 发明专利
    • Hydraulic clamp device with shift for cargo handling car
    • 液压钳装置与货物搬运车移动
    • JPS60193734A
    • 1985-10-02
    • JP4803984
    • 1984-03-15
    • Nissan Motor Co Ltd
    • MORITA KATSUYOSHI
    • B60P1/00B66F9/18
    • B66F9/183
    • PURPOSE:To prevent clamp pressure from being reduce irrespective of oil leakage without use of complicated hydraulic circuit piping by providing a valve body for controlling pressure oil flowing among a cylinder, a clmaping operation valve, and a shifting operation valve. CONSTITUTION:A valve body 9 for controlling pressure oil flowing among cylinders 7a, 7b for operating right and left clamp arms 5a, 5b and a clamping operation valve 1 and a shifting operation valve 3 is disposed among the valves 1, 3 and the cylinders 7a, 7b. The valve body 9 includes a small diameter part 13 having a valve seat 11 and formed on the center thereof, on both sides of which large diameter parts 15, 17 are formed. In clamping, the valve 1 is set to a clamping position I whereby pressure oil from a pump P1 reaches a valve 53 via a pipe line 55, a first hydraulic line 23, and second hydraulic lines 25, 27 and 35, 37, and further reaches the cylinders 7a, 7b via pipe lines 45, 47 and moves to clamp an object.
    • 目的:通过设置用于控制在气缸,夹紧操作阀和换档操作阀之间流动的压力油的阀体,来防止夹紧压力不受油漏的影响而不使用复杂的液压回路管道。 构成:在阀1,3和气缸7a之间配置有用于控制用于操作左右夹紧臂5a,5b以及夹紧操作阀1和换档操作阀3的气缸7a,7b之间流动的压力油的阀体9 ,7b。 阀体9包括具有阀座11并形成在其中心的小直径部分13,其两侧形成有大直径部分15,17。 在夹紧时,阀1被设定在夹紧位置I,由此来自泵P1的压力油经由管线55,第一液压管线23和第二液压管线25,27,35,37进入阀53。 通过管线45,47到达气缸7a,7b,并移动以夹紧物体。