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    • 5. 发明专利
    • HYDRAULIC PRESSURE OPERATING APPARATUS
    • JPS56167029A
    • 1981-12-22
    • JP6854080
    • 1980-05-23
    • SUZUKI TOMIO
    • SUZUKI TOMIO
    • E02D7/10E02D11/00
    • PURPOSE:To drive or withdraw piles quietly accompanying no noise and vibration by forcing a high pressure oil water intermittently into a core from above or below the core which is arranged between the upper and lower mobile sections in such a manner as to move vertically. CONSTITUTION:When driving a pile, a transmission plate 10 is fitted into a head of the pile erected on the ground surface at the site, while a specified number of concrete weight 11 are placed on a downward mobile section 2 beforehand. Under such a condition, an oil water 13 is forced intermittnetly from an upper pipe 6 and injected into a concave section of a core 3 from an upper oil water path 2a. As the oil water fills a chamber 4b and the weight is placed on the top thereof the oil water injectd provides a force to strike down the core 3 directly. With the simultaneous lowering of the upward mobile section 4, the pile is driven. Here, with the expansion of a diaphragm 5, increment of the oil water is absorbed. With the return of the diaphragm 5, the oil water 13 is discharged from a discharge pipe 8.
    • 10. 发明专利
    • WATER SUPPLYING METHOD FOR WATER JET WORK
    • JPS58113420A
    • 1983-07-06
    • JP20997481
    • 1981-12-28
    • SUZUKI TOMIO
    • SUZUKI TOMIO
    • E02D7/24
    • PURPOSE:To effectively excavate various kinds of strate by a method in which a jet pump using high-pressure water from a high-pressure water supply pump is inserted into a high-pressure waterway from which the water is supplied to an excavating nozzle and excavation is made while varying the pressure and amount of the pressure water. CONSTITUTION:When a high-pressure pump 3 is actuated, water in a water tank 1 is supplied through a suction hose 2, a jet pump 4 and a high-pressure hose 5 to an excavating nozzle 7 at the tip of a pile 6 to excavate the ground. When the ground of even low-moisture content requires a high-pressure jet, a flange 25 is pushed and the tip of the nozzle 23 is pressed on a valve seat 24, whereupon the supply of water from the suction hose 2' is stopped and high-pressure water from the nozzle pipe 22 is supplied to the excavating nozzle 7. Also, in the case of gravel layer, requiring a large amount of water, when the nozzle 23 and the valve seat 24 are sufficiently opened, high-pressure water from the nozzle 23 sucks up low-pressure water in the surrounding and thereby high-pressure water of as much as 2-3 times is sent into the high-pressure hose 5.