Belt variator (1) including drive pulley (3) on the drive shaft (2), belt (7) and the driven pulley (6) on the driven shaft (5). At least driven pulley (6) comprises a fixed half (61) convertible to axial half (62), the means of transferring axial changeover half (62) is movable to at least one sector of the curved compression surface. Mobile sector consists of a supporting ring (8) rotatable arranged on the driven shaft (5) which on one side is adjacent to axial changeover half (62) driven pulley (6) through the bearing (24) and the other is provided with at least one front surface (9) engaging with a fixed pin (10), and means for reciprocating rotary motion of the supporting ring (8) consists of a rope or a pull chord. The subject invention is also a grass lawn (17) or crusher including motor (18) driven by a drive shaft (2) with the drive pulley (3) suspension gear (15) with bogie wheels (19) while using the drive pulley (4) mowing mechanism (20) and the driving pulley (3), the chassis and gear (15) is arranged continuously variable belt (1).Belt variator (1) including drive pulley (3) on the drive shaft (2), belt (7) and the driven pulley (6) on the driven shaft (5). At least driven pulley (6) comprises a fixed half (61) convertible to axial half (62), the means of transferring axial changeover half (62) is movable to at least one sector of the curved compression surface. Mobile sector consists of a supporting ring (8) rotatable arranged on the driven shaft (5) which on one side is adjacent to axial changeover half (62) driven pulley (6) through the bearing (24) and the other is provided with at least one front surface (9) engaging with a fixed pin (10), and means for reciprocating rotary motion of the supporting ring (8) consists of a rope or a pull chord. The subject invention is also a grass lawn (17) or crusher including motor (18) driven by a drive shaft (2) with the drive pulley (3) suspension gear (15) with bogie wheels (19) while using the drive pulley (
