| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas holder capable of reducing reaction of a guide roller while suppressing cost increase.SOLUTION: A piston 3 includes a plurality of guide rollers 20 each including wheels 27 and 37 running while pressing an inner wall surface 7a of a cylindrical vessel 2 outward and provided to be distanced from one another in a circumferential direction of the cylindrical vessel 2. The guide rollers 20 include guide rollers 20A arranged in an area A turning to the north; and guide rollers 20B arranged in an area B turning to the south. Each guide roller 20B includes a suspension feature based on a spring 37, and each guide roller 20A includes a plurality of wheels 37 rotatably supported on both sides of a bracket 35, which is swingably supported, across a swing center. |
