Flexible hose tensioning device

A flexible hose tensioning device engageable with a flexible hose, the flexible hose tensioning device comprising:

• a shaper roller comprising a plurality of separate guide grooves, the plurality of separate guide grooves being engageable with raised sections of the flexible hose, each guide groove of the plurality of separate guide grooves extending along a length of the shaper roller and being spaced apart from other guide grooves of the plurality of separate guide grooves around a circumference of the shaper roller;
• a holding element holding the flexible hose in the shaper roller;
• and
• a spring coupled to the shaper roller, wherein the spring is tensioned if the flexible hose is pulled in a corresponding direction and generates an opposing force to a flexible hose tensile force,
• wherein the shaper roller and the guide grooves are configured such that there is a form fit between the shaper roller and the flexible hose,
• wherein the holding element is a further shaper roller that includes guide grooves that engage in the raised sections of the flexible hose,
• wherein the further shaper roller and the guide grooves of the further shaper roller are configured such that there is a form fit between the further shaper roller and the flexible hose,
• wherein the shaper roller is coaxially coupled to a first toothed wheel and the further shaper roller is coaxially coupled to a second toothed wheel, and
• wherein the first toothed wheel and the second toothed wheel are arranged so that the first toothed wheel and the second toothed wheel engage each other and force a corresponding movement of the shaper roller and the further shaper roller.