When vertically cutting on a circumference of a vertical cut block (A) is completed, a wedge crimping frame (3) to which a first pressing/crimping force of a wedge portion (W) is exerted by a downward slide of movable wedge slope surfaces (45a, 45b), is firmly horizontally crimped against a manhole housing. In this state, as a frame (2) for cutting and separating a horizontal attachment side (HB) of the vertical cut block (A) is installed to be vertical to the wedge crimping frame (3) over both side ends of the manhole housing via a manhole central portion, small hydraulic jacks (J) are provided under symmetric hydraulic jack support parts that are integrally formed at both extensions of the frame (2). By lifting both ends of the frame (2) for cutting and separating the horizontal attachment side (HB) of the vertical cut block (A) alternately zigzag using the symmetric small hydraulic jacks (J), that is, by the asymmetric lifting, the horizontal attachment side (HB) of the vertical cut block (A) is gradually cut and separated from a vertical cut line (g) on the circumference toward the manhole housing (10). Meanwhile, during the lifting actions of a lifting device (C), a second pressing/crimping force of the wedge portion (W) is exerted in addition to the first pressing/crimping force of the wedge portion (W) to the wedge crimping frame (3), and thus crimping and slipping caused by a lifting weight of the vertical cut block (A) can be prevented.

    본 발명은 수직절단블록(A)의 원주상 수직 절단(g)이 완료된 상태에서 이동쐐기경사면(45a)(45b)의 하향슬라이드에 의해 쐐기부(W)의 제1 가압·압착력이 발휘된 쐐기압착프레임(3)이 맨홀하우징에 대하여 견고하게 수평 압착되고, 이 상태에서 쐐기압착프레임(3)에 직각으로 맨홀중심부를 가로질러 맨홀하우징의 양단상단부에 걸쳐 「수직절단블록(A) 수평부착면(HB)의 절단분리 프레임(2)」이 설치되면서 그 양 연장선에 일체로 형성된 대칭의 유압잭지지부의 하부에 소형 유압잭(J)되며, 「수직절단블록(A) 수평부착면(HB)의 절단분리 프레임(2)」의 양단을 대칭의 양 소형 유압잭(J)에 의해 지그재그 방식으로 번갈아가면서 교번적으로 리프팅(lifting)시킴으로써 비대칭리프팅에 의해 원주상 수직 절단선(g)으로부터 맨홀하우징(10)을 향해 수직절단블록(A)의 수평 부착면(HB)이 서서히 절단·분리되는 한편, 리프트장비(C)에 의한 「인상」동작 시 쐐기압착프레임(3)의 쐐기부(W)의 제1 가압·압착력에 더하여 쐐기부(W)의 제2 가압·압착력이 한층 더 가중됨으로써 수직절단블록(A)의 인상 중량으로 인한 압착슬립이 방지되게 한 발명이다.


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    Title :

    A B A HB Manhole lift apparatus cutting horizontal bonding of block by wedge pressing device and system cutting horizontal bonding of block by the manhole lift apparatus


    Additional title:

    수직절단블록(A) 부착면(B)의 절단분리 겸 맨홀인상보수장치 및 이를 이용한 수직절단블록(A)의 수평부착면(HB) 절단분리·인상 시스템


    Publication date :

    2021-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    E02D FOUNDATIONS , Gründungen / B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last





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