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    • 3. 发明专利
    • ATTACHING AND DETACHING TOOL FOR PLURAL NUMBER OF BOLTS
    • JPH05213299A
    • 1993-08-24
    • JP5409392
    • 1992-02-06
    • MITSUBISHI HEAVY IND LTD
    • OHASHI ISAO
    • B64G4/00
    • PURPOSE:To shorten working time, and to prevent the falling off of a bolt and a nut at working time, and to make an attaching and detaching tool applicable to the attaching and detaching of plural kinds of cold plates by simultaneously enlarging and contracting plural number of wrench boxes through one handle, and rotating the wrench boxes through another handle to attach and detach plural number of bolts. CONSTITUTION:When wrench boxes composed of wrench composing links are fitted to a group of bolts to be fastened, and a handle 2 is rotated, two bolt-nut fixing gear rotation transmitting shafts 3 to mutually interlock rotate to rotate a wrench box frame ring 7, and the wrench composing ring is pulled by the bracket of the ring 7 to contract the wrench boxes for fixing the bolts. Next, when a handle 8 is rotated, a rotation transmitting shaft 10 is rotated through a rotation transmitting gear 9 to rotate a wrench rotating gear 12 engaging with the rack 11 of the shaft 10, and then a moving direction restricting mechanism makes a wrench joining link rotate the wrench box to fasten the bolt.