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    • 1. 发明专利
    • METHOD AND APPARATUS FOR INSTALLING LINES,PIPES OR CABLES UNDERGROUND
    • ZA81766B
    • 1982-02-24
    • ZA81766
    • 1981-02-05
    • YUTAKA TSUDA
    • TSUDA YUTAKAYUTAKA TSUDA
    • E02B11/02E02F5/10E21B7/20B29DE02BF16L
    • PCT No. PCT/JP80/00075 Sec. 371 Date Oct. 1, 1981 Sec. 102(e) Date Oct. 1, 1981 PCT Filed Apr. 15, 1980 PCT Pub. No. WO81/02317 PCT Pub. Date Aug. 20, 1981.This invention relates to a method for efficiently installing lines, pipes or cables underground. In operation, a boring head which forms an elongated bore underground along with the movement of a boring device is disposed underground. A flat plastic sheet is continuously reeled out and is formed into a rigid plastic tube. A hauling rope is simultaneously reeled out into the rigid plastic tube, such plastic tube and hauling rope have their front extremities connected to the rear end of the boring head. The plastic tube is continuously installed underground along with the movement of the boring head. The movement of the boring head also provides simultaneous extending of the hauling rope in and along a installed plastic tube. The front portion of the line, pipe or cable is connected to the tail portion of the extended hauling rope. Finally, only the hauling rope is pulled or hauled within and along the plastic tube so as to install the line, pipe or cable in and along the plastic tube.
    • 7. 发明专利
    • Device for opening/closing chuck of automatic lathe
    • 用于打开/关闭自动车床的装置
    • JPS5766804A
    • 1982-04-23
    • JP14338880
    • 1980-10-13
    • Yutaka Tsuda
    • TSUDA YUTAKA
    • B23B31/26B23B31/24B23B31/30
    • PURPOSE: To heighten the productivity of an automatic lathe, by automatically and surely opening or closing a chuck in a short time as it is rotating rapidly.
      CONSTITUTION: The annular body 14 of a chuck 13 is rotatably supported on a bearbox 1 so that the axis of rotation of the body 14 extends inparallel with a driving shaft 2. A first gear 8 for opening/closing claws and a fourth overrunning gear 9 are secured on the peripheral surface of one end of a piston shaft 4f. An overrunning gear shaft 20 is rotatably supported in the gearbox 1 in parallel with the driving shaft 2. A second overrunning gear 21 engaged with a first overrunning gear 7 is rotatably fitted on the peripheral surface of the shaft 20. A third overrunning gear 22 engaged with the fourth overrunning gear 9 is secured on the peripheral surface of the shaft 20. Accordingly to this constitution, the chuck 13 is automatically opened or closed in a short time as it is rotating rapidly. This results in heightening the productivity of an automatic lathe.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:提高自动车床的生产率,通过快速旋转,在短时间内自动确定打开或关闭卡盘。 构成:卡盘13的环状体14被可旋转地支撑在熊盒1上,使得主体14的旋转轴线与驱动轴2平行延伸。用于打开/关闭爪的第一齿轮8和第四超越齿轮9 固定在活塞轴4f的一端的周面上。 超速齿轮轴20与驱动轴2平行地可旋转地支撑在齿轮箱1中。与第一超越齿轮7啮合的第二超越齿轮21可旋转地装配在轴20的外周表面上。第三超越齿轮22接合 其中第四超越齿轮9固定在轴20的外周表面上。由此,卡盘13随着其快速旋转而在短时间内自动打开或关闭。 这样可以提高自动车床的生产效率。