One is the other end to the threaded portion at the same time that can be installed, regardless of the thickness and shape of the slab, particularly in the interval compensating rod body of the work table that can be adjusted in a spiral movement along the width of the elevator shaft to the spacing and to bear against a wall of the elevator shaft the formation of a reinforcing cap to protect, as in the threaded part of the elevator safety workbench which widen keep the cross-sectional area of the connection portion of the can may, of course, cross-rod to prevent adhering the like mortar, to prevent accidents, horizontal support 10, 10, vertical support 20, 20 and the inclined support (30, 30) are bonded to each other to correspond to each other, and eon on top of the horizontal support 10, 10 himdae 40 is in the elevator safety workbench is fixed, to secure sikieo move a plurality of clamping bodies 70, 70 in the longitudinal direction of the horizontal rod 60 connecting the vertical support (20), (20) at the same time with, clam Peuche 70, it is possible to secure sikieo movement position (70) as above, downward, horizontal support 10, 10 and the vertical support 20, a tilt support (30) for connecting (20), It is 30 in the threaded interval compensating rod body 50 that is, 50, the protective cap 52 is formed with.
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