A moving device (100, 200, 300, 400) for a rod part supporting an instrument hose comprising: a spring (61, 461) configured to generate a torque when a rod part that supports an instrument hose connected to an instrument is tilted down or tilted up about a rotation axis on a base portion side of the rod part; and a torque adjustment unit (70, 270, 370) that is capable of adjusting a torque by deforming the spring (61, 461), wherein the spring (61, 461) is positioned on the rotation axis, wherein the torque adjustment unit (70, 270, 370) includes a spring deforming portion that is attached to a first end of the spring (61, 461) and that deforms the spring (61, 461) in a direction in which the spring (61, 461) is wound up and a spring fixing portion (74, 374) that keeps a torque constant by coming into contact with the spring deforming portion and fixing the spring deforming portion in place, wherein the moving device (100, 200, 300, 400) for a rod part supporting an instrument hose further comprises: a rotary unit provided with a to-be-attached portion to which the base portion of the rod part is to be attached, wherein the moving device (100, 200, 300, 400) for a rod part supporting an instrument hose has a plurality of adjustment holes formed on an outer peripheral portion of the spring deforming portion, wherein the rotary unit and the spring deforming portion are positioned on the rotation axis, and a second end of the spring is attached to the rotary unit, and wherein the spring deforming portion is caused, by an operating member inserted in one of the adjustment holes, to rotate in a direction that is opposite to a direction in which the rod part is tilted down, so that the spring (61, 461) is wound up, and a torque increases. a spring (61, 461) configured to generate a torque when a rod part that supports an instrument hose connected to an instrument is tilted down or tilted up about a rotation axis on a base portion side of the rod part; and a torque adjustment unit (70, 270, 370) that is capable of adjusting a torque by deforming the spring (61, 461), wherein the spring (61, 461) is positioned on the rotation axis, wherein the torque adjustment unit (70, 270, 370) includes a spring deforming portion that is attached to a first end of the spring (61, 461) and that deforms the spring (61, 461) in a direction in which the spring (61, 461) is wound up and a spring fixing portion (74, 374) that keeps a torque constant by coming into contact with the spring deforming portion and fixing the spring deforming portion in place, a spring deforming portion that is attached to a first end of the spring (61, 461) and that deforms the spring (61, 461) in a direction in which the spring (61, 461) is wound up and a spring fixing portion (74, 374) that keeps a torque constant by coming into contact with the spring deforming portion and fixing the spring deforming portion in place, wherein the moving device (100, 200, 300, 400) for a rod part supporting an instrument hose further comprises: a rotary unit provided with a to-be-attached portion to which the base portion of the rod part is to be attached, wherein the moving device (100, 200, 300, 400) for a rod part supporting an instrument hose has a plurality of adjustment holes formed on an outer peripheral portion of the spring deforming portion, wherein the rotary unit and the spring deforming portion are positioned on the rotation axis, and a second end of the spring is attached to the rotary unit, and wherein the spring deforming portion is caused, by an operating member inserted in one of the adjustment holes, to rotate in a direction that is opposite to a direction in which the rod part is tilted down, so that the spring (61, 461) is wound up, and a torque increases. a rotary unit provided with a to-be-attached portion to which the base portion of the rod part is to be attached, wherein the moving device (100, 200, 300, 400) for a rod part supporting an instrument hose has a plurality of adjustment holes formed on an outer peripheral portion of the spring deforming portion, wherein the rotary unit and the spring deforming portion are positioned on the rotation axis, and a second end of the spring is attached to the rotary unit, and wherein the spring deforming portion is caused, by an operating member inserted in one of the adjustment holes, to rotate in a direction that is opposite to a direction in which the rod part is tilted down, so that the spring (61, 461) is wound up, and a torque increases.