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    • 4. 发明专利
    • Hydraulic circuit for tuning cylinder
    • 用于调节气缸的液压回路
    • JPS60196411A
    • 1985-10-04
    • JP5216284
    • 1984-03-21
    • Hitachi Ltd
    • CHIBA MINORUNAGAO MASARUTAJIMA SADAYOSHI
    • F15B11/22
    • F15B11/22
    • PURPOSE:To prevent errors due to damage in a relief valve from growing larger, by making up a mechanical operation type pilot check valve into such one capable of operating it separately, while making stroke errors in time of goging up correctable with oil pressure passing through the pilot check valve. CONSTITUTION:A mechanical operation type pilot check valve 2 is installed at the left sideward of a tuning cylinder 1. And, a pilot check valve 61 is installed in position between pipe lines 45 and 46, while each of check valves 7 and 8 between pipe lines 48 and 49, each of check valves 5 and 6 between these pipe lines 48, 49 and 45, a pilot check valve 65 between pipe lines 56 and 57, each of pilot check valves 63 and 64 between pipe lines 48, 51 and 49, 52, respectively. With this constitution, stroke errors in time of going up are correctable without depending upon a relief valve. Therefore, problems on an increase in stroke errors due to damage in the relief valve or the like can be solved.
    • 目的:为了防止安全阀损坏造成的误差越来越大,通过组装机械操作型先导式止回阀,使其能够单独操作,同时在通过油压的情况下使得冲程时间上的冲程可纠正 先导止回阀。 构成:在调音筒1的左侧安装有机械操作型导向式止回阀2.并且,在管路45,46之间安装有先导式止回阀61,同时将各止回阀7,8分别配置在管 管路48和49,这些管路48,49和45之间的止回阀5和6中的每一个,在管路56和57之间的导向止回阀65,在管路48,51和49之间的每个先导止回阀63和64 ,52。 利用这种结构,上升时间的行程误差可以校正,而不依赖于安全阀。 因此,可以解决由于安全阀等的损坏引起的冲程误差增加的问题。
    • 5. 发明专利
    • Hydraulic circuit of cylinder
    • 气缸液压回路
    • JPS5950205A
    • 1984-03-23
    • JP17357682
    • 1982-10-01
    • Osaka Taiyuu:Kk
    • FUJITA HIROSHI
    • B60P1/00B66F9/22F15B11/22
    • F15B11/22
    • PURPOSE:To eliminate a member connecting piston rods and obtain a light weight device by a method wherein a single rod type double-acting cylinder and a single acting cylinder are synchroneously operated with one manual hydraulic pump. CONSTITUTION:Since the area in which the sectional area S2 of a piston rod 53 is subtracted from the inner diameter area S1 of a double-acting clinder 50 is equal to the inner diameter area S3 of a single acting cylinder 50a, the raising speed of the piston rod 53a of the single acting cylinder 50a pushed up by an operating hydraulic oil discharged from the double acting cylinder 50. Therefore, the lifting blocks 3, 3 connected to both cylinders 50, 50a are raised simultaneously in the same speed is equal to that of the piston rod 53 of the double- acting cylinder 50. Hydrualic oil of the same volume as that of discharged hydraulic oil is suctioned into the upper chamber 57 of the piston from the single acting cylinder 50a, resulting in that both piston rods 53 and 53a are descended simultaneously under the same speed.
    • 目的:为了消除连接活塞杆的部件,通过单杆式双作用缸和单作用缸与一个手动液压泵同步操作的方法来取得轻型装置。 构成:由于从双作用剥离器50的内径区域S1中减去活塞杆53的截面积S2的面积与单作用缸50a的内径面积S3相等,因此, 单作用缸50a的活塞杆53a被从双作用缸50排出的操作液压油向上推动。因此,连接到两个缸50,50a的升降块3,3以同样的速度同时升高 与双作用缸50的活塞杆53相同的体积的液压油从单作用缸50a吸入活塞的上室57,导致两个活塞杆53 和53a同时下降。