Be used for large-scale face of cylinder elasticity spanner

The utility model provides a be used for large-scale face of cylinder elasticity spanner, relates to spanner technical field, its characterized in that: including the fixed head, fastening belt, lead screw, silk braid, fixed cover and handrail, the fixed head go up the symmetry is provided with two slot holes, the both ends of fastening belt insert the slot hole respectively from the front end of fixed head in, the fixed rear end that sets up at the fixed head of lead screw, the silk braid pass through threaded connection cover and establish on the lead screw, the rotatable setting of the relative silk braid of fixed cover on the silk braid, fixed setting the in both ends of fastening belt sheathe in fixed, the fixed end that sets up at the lead screw of handrail. The utility model discloses it is rational in infrastructure, to be convenient for adjust, the card is expressed one's appreciation reliable and stablely, can not lead to the fact the damage to the face of cylinder, need not the power of holding with a firm grip in addition