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

摘要

The present invention is a wedge in which the first pressing/compressing force of the wedge portion (W) is exerted by the downward slide of the moving wedge inclined surfaces (45a, 45b) in the state where the circumferential vertical cutting (g) of the vertical cutting block (A) is completed The crimping frame (3) is horizontally crimped firmly against the manhole housing, and in this state, it crosses the center of the manhole at a right angle to the wedge crimping frame (3) and spans the upper ends of both ends of the manhole housing. When the ''cutting and separating frame (2) of (HB)'' is installed, a small hydraulic jack (J) is formed on the lower part of the symmetrical hydraulic jack support part integrally formed on both extension lines, and the "vertical cutting block (A) horizontal attachment surface (HB) is cut By alternately lifting both ends of the ''separation frame (2)'' in a zigzag manner by both symmetrical small hydraulic jacks (J), the manhole housing (10) from the circumferential vertical cut line (g) by asymmetric lifting While the horizontal attachment surface (HB) of the vertical cutting block (A) is gradually cut and separated toward the In addition to the pressing and pressing force, the second pressing and pressing force of the wedge portion (W) is further weighted, thereby preventing the compression slip due to the lifting weight of the vertical cutting block (A).