Method and apparatus for mounting and dismounting belts to and from pulleys

An apparatus for mounting a belt on a first pulley and a second pulley, the first pulley successively having an outer pulley flange, a middle pulley flange, and an inner pulley flange;

• an outer pulley groove provided between the outer pulley flange and the middle pulley flange, and an inner pulley groove provided between the middle pulley flange and the inner pulley flange, and the second pulley having a pulley groove, the belt having a ring-shape and configured to be stretched in a peripheral direction, the belt being mounted on the first pulley groove by being positioned thereon from the outer side of the outer flange, with respect to the axial direction of the first pulley, comprising:
• a guide member comprising an attaching element and a guide member, the attaching element extending in the peripheral direction of the first pulley, the attaching element having an inner surface configured for being seated in the outer pulley groove of the first pulley and for covering the outer peripheries of the outer pulley flange and the middle pulley flange, the belt guiding element provided approximately at the center of the attaching element with respect to the longitudinal direction thereof and protruding from the attaching element, the guide member having a belt introduction surface configured to face the rotational direction of the first pulley when the guide member is installed on the first pulley, and
• a fixing member configured to fix the guide member on the first pulley and to hold the belt so that the belt is seated in the inner pulley groove of the first pulley.

A method for mounting and dismounting a belt on a first pulley and a second pulley, each of the first pulley and the second pulley successively having an outer pulley flange, a middle pulley flange, and an inner pulley flange;

• an outer pulley groove provided between the outer pulley flange and the middle pulley flange, and an inner pulley groove provided between the middle pulley flange and the inner pulley flange, the belt having a ring-shape and configured to be stretched in a peripheral direction, the belt being mounted and dismounted to and from the inner pulley grooves of the first pulley and the second pulley by being positioned thereon from the outer side of the outer flanges, with respect to the axial direction of the first pulley and the second pulley, comprising:
• using a guide member and a fixing member to mount and dismount the belt to and from the first and the second pulleys,
• wherein the guide member comprises an attaching element, a belt guiding element and a belt deviation element, the attaching element extending in the peripheral direction of the first pulley and the second pulley, the attaching element having an inner surface configured for being seated in the outer pulley groove of the first pulley and the inner pulley groove of the second pulley and for covering the outer peripheries of the middle pulley flange and the outer pulley flange of the first pulley and the outer peripheries of the inner pulley flange and the middle pulley flange of the second pulley;
• the belt guiding element provided approximately at the center of the attaching element with respect to the longitudinal direction thereof and protruding from the attaching element, the belt guiding element having a belt introduction surface configured to face the rotational direction of the first pulley and the second pulley;
• the belt deviation element configured to extend in an outer direction with respect to the axial direction of the second pulley so as to cover the outer pulley groove and the outer periphery of the outer pulley flange of the second pulley, the fixing member configure to fix the guide member on the first pulley and to hold the belt so that the belt is seated in the inner pulley groove of the first pulley;
• winding the belt around the pulley groove of the second pulley;
• fitting the guide member in the inner groove of the first pulley;
• fixing the guide member on the first pulley using the fixing member;
• seating the belt in the inner pulley groove of the first pulley using the fixing member;
• positioning the belt in the outer direction with respect to the axial direction of the first pulley, by the guidance of the belt introduction surface of the guide member;
• rotating the first pulley in the rotational direction of the first pulley so as to seat the belt in the inner pulley groove of the first pulley, whereby the belt is mounted on the first pulley and the second pulley;
• and
• fitting the guide member in the inner groove of the second pulley;
• and
• rotating the first pulley in the rotational direction of the first pulley, whereby the belt is dismounted from the first pulley and the second pulley.

An apparatus for mounting and dismounting a belt to and from a first pulley and a second pulley, each of the first pulley and the second pulley successively having an outer pulley flange, a middle pulley flange, and an inner pulley flange;

• an outer pulley groove provided between the outer pulley flange and the middle pulley flange, and an inner pulley groove provided between the middle pulley flange and the inner pulley flange, the belt having a ring-shape and configured to be stretched in a peripheral direction, the belt being mounted and dismounted to and from the inner pulley grooves of the first pulley and the second pulley by being positioned thereon from the outer side of the outer flanges, with respect to the axial direction of the first pulley and the second pulley, comprising:
• a guide member comprising an attaching element, a belt guiding element and a belt deviation element, the attaching element extending in the peripheral direction of the first pulley and the second pulley, the attaching element having an inner surface configured for being seated in the outer pulley groove of the first pulley and the inner pulley groove of the second pulley and for covering the outer peripheries of the middle pulley flange and the outer pulley flange of the first pulley and the outer peripheries of the inner pulley flange and the middle pulley flange of the second pulley;
• the belt guiding element provided approximately at the center of the attaching element with respect to the longitudinal direction thereof and protruding from the attaching element, the belt guiding element having a belt introduction surface configured to face the rotational direction of the first pulley and the second pulley;
• the belt deviation element configured to extend in an outer direction with respect to the axial direction of the second pulley so as to cover the outer pulley groove and the outer periphery of the outer pulley flange of the second pulley, and
• a fixing member configured to fix the guide member on the first pulley and to hold the belt so that the belt is seated in the inner pulley groove of the first pulley.