| 摘要 |
PURPOSE: A jack for reinforcing a beam is provided to cut down the cost required for reinforcement work of a beam and to execute the reinforcement work easily. CONSTITUTION: The jack for reinforcing a beam comprises: primary and secondary hinge brackets(121,122) whose each end is coupled to a horizontal beam(200) and a vertical beam(300); a primary connecting bracket(130) whose one end is fixed to the other end of the primary hinge bracket(121) of the horizontal beam(200) by a hinge pin(170); a secondary connecting bracket(140) whose one end is fixed to the other end of the secondary hinge bracket(122) of the vertical beam(300) by the hinge pin(170) and the other end is provided with a right screw groove(141); a third connecting bracket(150) provided with a left screw groove(151); a connecting beam(160) connecting the other end of the primary connecting bracket(130) and the other end of the third connecting bracket(150); and a length adjusting member(110) provided with a right screw spiral(111) to be fixed to the right screw groove(141) of the secondary connecting bracket(140), a left screw spiral(112) to be fixed to the left screw groove(151) of the third connecting bracket(150), and a rotary unit(113).
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