Patent WO-2019200496-A1 (WO)
Title: Protective assembly for an electric shovel bucket
Inventor: SUÁREZ BOLAÑOS JUAN
IPC: E02F9/28
Filed: 2019-04-16
Abstract: The invention relates to a protective assembly for guarding the lip (1020) of a bucket of an electric mining shovel, characterised in that it comprises: - a device between teeth (200) comprised of: (i) an upper front zone (210a) defined by a flat face having positive slope and a lower front zone (210b) defined by a flat face having negative slope, a trapezoidal protrusion (211) made of the same material as the device between teeth (200) protrudes under the flat face having negative slope, so that a lower front zone (210b) is formed that increases its wear resistance, (ii) a rod-shaped recess (207), (iii) a connection and securing groove (208), and (iv) two support arms, one lower (209b) and one upper (209a), that define the rod-shaped recess (207) to be adjusted on the lip (1020) of the bucket, where the thickness of the upper support arm (209a) increases as it approaches the upper front zone (210a) and its length is greater than the lower support arm (209b); - an attachment means (220) for the device between teeth (200), comprising: (i) a cradle (221), (ii) a C-shaped securing element (222), (iii) an adjustment bolt (223), (iv) a recessing nut (224), and (v) a protective cap (225), said attachment means (220) attach the device between teeth (200) to the lip (1020) of the bucket, by means of the groove (208) of the device between teeth (200) and an opening in the lip (1020) of the bucket of the electric shovel; - a side protection device located in each side of the bucket, made up of: (i) an upper side guard (230), which can be coupled with each side edge, left and right, of the bucket, made up of: (a) a trapezoidal recess (232) formed by two side walls (233, 234) and a prismatic front wall (235) that is thicker than the side walls (233, 234), and (b) two connection and securing grooves (231a, 231b) that are located in each of the side walls (233, 234); (ii) an angled lower side guard (240) that can be coupled with each corner side edge of the lip (1020), comprising: (a) a trapezoidal recess (242) formed by two side walls (243, 244) and a prismatic front wall (245) that is thicker than the side walls (243, 244), and (b) a connection and securing groove (241a, 241b) is provided in each of the side walls (243, 244), wherein said guard (440) forms an obtuse angle of inclination between its upper end (246) and its lower end ( 247); (iii) a coupling pin (9) shaped and sized to be received in each of the connection and securing grooves that are located in the upper and bottom side guards (230 and 240), the coupling pin (9) comprising a pin body (9.1), a pivot (9.2), which is located inside the pin body (9.1), a captive device (9.3), which provides attachment to the assembly that forms the pin body with the pivot when it is inserted into the connection and securing slot, and an O-ring (9.4) that seals the pivot (9.2) to the pin body (9.1) when it is inserted. The invention relates to a protective assembly for guarding the lip (1020) of a bucket of an electric mining shovel, characterised in that it comprises: - a device between teeth (200) comprised of: (i) an upper front zone (210a) defined by a flat face having positive slope and a lower front zone (210b) defined by a flat face having negative slope, a trapezoidal protrusion (211) made of the same material as the device between teeth (200) protrudes under the flat face having negative slope, so that a lower front zone (210b) is formed that increases its wear resistance, (ii) a rod-shaped recess (207), (iii) a connection and securing groove (208), and (iv) two support arms, one lower (209b) and one upper (209a), that define the rod-shaped recess (207) to be adjusted on the lip (1020) of the bucket, where the thickness of the upper support arm (209a) increases as it approaches the upper front zone (210a) and its length is greater than the lower support arm (209b); - an attachment means (220) for the device between teeth (200), comprising: (i) a cradle (221), (ii) a C-shaped securing element (222), (iii) an adjustment bolt (223), (iv) a recessing nut (224), and (v) a protective cap (225), said attachment means (220) attach the device between teeth (200) to the lip (1020) of the bucket, by means of the groove (208) of the device between teeth (200) and an opening in the lip (1020) of the bucket of the electric shovel; - a side protection device located in each side of the bucket, made up of: (i) an upper side guard (230), which can be coupled with each side edge, left and right, of the bucket, made up of: (a) a trapezoidal recess (232) formed by two side walls (233, 234) and a prismatic front wall (235) that is thicker than the side walls (233, 234), and (b) two connection and securing grooves (231a, 231b) that are located in each of the side walls (233, 234); (ii) an angled lower side guard (240) that can be coupled with each corner side edge of the lip (1020), comprising: (a) a trapezoidal recess (242) formed by two side walls (243, 244) and a prismatic front wall (245) that is thicker than the side walls (243, 244), and (b) a connection and securing groove (241a, 241b) is provided in each of the side walls (243, 244), wherein said guard (440) forms an obtuse angle of inclination between its upper end (246) and its lower end ( 247); (iii) a coupling pin (9) shaped and sized to be received in each of the connection and securing grooves that are located in the upper and bottom side guards (230 and 240), the coupling pin (9) comprising a pin body (9.1), a pivot (9.2), which is located inside the pin body (9.1), a captive device (9.3), which provides attachment to the assembly that forms the pin body with the pivot when it is inserted into the connection and securing slot, and an O-ring (9.4) that seals the pivot (9.2) to the pin body (9.1) when it is inserted.