| 摘要 |
PROBLEM TO BE SOLVED: To provide a header for a pipe renewing device capable of certainly dividing an existing pipe. SOLUTION: A header for a pipe renewing device is to divide an existing pipe in the axial direction by a dividing part 22A along a cutting groove formed by a cutting part and to draw a newly set pipe in a tunnel the peripheral wall of which is made by an extended diametrical part which pushes the divided piece onto soil around it, the divided part 22A extends in the axial direction in correspondence with a position of two or more than two cutting grooves, and it has oscillating rod type dividing means 31, 32 arranged inclined backward from head end parts axially supported on a dividing part main body, a pressurizing means 38 free to mover roughly in the diametrical direction relative to the dividing part main body 33 by making contact with the dividing means 31, 32 from the inside and converting means 25, 34, 35, 36, 37, 39 to convert force to pull this dividing part 22A in the axial direction to force to move the pressurizing means 38 in the diametrical direction.
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