Lip for earth moving machine shovel and lip manufacturing method

Abstract

A lip for an earth moving machine shovel, comprising: a main body (1a, 1b), and a plurality of noses (3) protruding from the main body (1a, 1b); the at least one transmission surface (4a, 4b) between each nose (3) and the main body (1b) has a 5 slope variation of between 0° and 10°, each transmission surface (4a, 4b) comprising at least a portion of a stabilisation surface (9a, 9b) of the respective nose (3) and a portion of a surface of the main body (1b). Also, a method for manufacturing a lip comprising: introducing molten steel into a lip mould through one or more openings in the mould, the mould comprising a plurality of risers; cooling or 0 waiting for the molten steel introduced into the mould until it solidifies; and removing the plurality of risers from the lip manufactured with the mould.

1 - 20 . (canceled) 
     
     
         21 . A lip for an earth moving machine shovel, comprising:
 a main body; and   a plurality of noses protruding from the main body;   wherein at least one transmission surface between each nose of the plurality of noses and the main body has a slope variation of between 0° and 10°, each transmission surface comprising at least a portion of a stabilisation surface of a respective nose of the plurality of noses and a portion of a surface of the main body.   
     
     
         22 . The lip of  claim 21 , wherein each transmission surface of the at least one transmission surface extends from the respective nose to a portion of the main body between a pair of noses of the plurality of noses with one nose thereof being the respective nose of the at least one transmission surface. 
     
     
         23 . The lip of  claim 21 , wherein each transmission surface of the at least one transmission surface includes a surface of the lip closest to a secant plane that delimits a front portion of the main body from a rear portion of the respective nose. 
     
     
         24 . The lip of  claim 21 , wherein the slope variation of each transmission surface of the at least one transmission surface is between 0° and 1°. 
     
     
         25 . The lip of  claim 21 , wherein each transmission surface of the at least one transmission surface includes one or both of:
 a stabilisation surface of the respective nose extending more than 10% of a length of each nose along an axis that defines a direction in which the noses of the plurality of noses protrude from the main body; and   a surface of the main body extending more than 5% of a length of the main body along the axis.   
     
     
         26 . The lip of  claim 21 , wherein each transmission surface of the at least one transmission surface includes a first transmission surface and a second transmission surface, the first transmission surface being opposite the second transmission surface. 
     
     
         27 . The lip of  claim 21 , wherein at least one surface between one or both sides of each nose of the plurality of noses and the main body has a continuous transition geometry. 
     
     
         28 . The lip of  claim 21 , further comprising one or two reinforcing ribs in each nose of the plurality of noses, each reinforcing rib extending to the main body. 
     
     
         29 . The lip of  claim 28 , wherein the at least one transmission surface of one or more noses of the plurality of noses comprises a first transmission surface and a second transmission surface, wherein the first transmission surface and the second transmission surface are each on a different side of a reinforcing rib of the respective nose. 
     
     
         30 . The lip of  claim 21 , further comprising two lateral walls protruding from the main body. 
     
     
         31 . The lip of  claim 28 , further comprising two lateral walls protruding from the main body, wherein a reinforcing rib in each nose of the plurality of noses at one end of the lip extends to a lateral wall of the two lateral walls by means of an attachment surface with a continuous transition geometry. 
     
     
         32 . The lip of  claim 28 , further comprising a plurality of riser necks, each riser neck of the plurality of riser necks being next to a reinforcing rib of the one or two reinforcing ribs of each respective nose. 
     
     
         33 . The lip of  claim 32 , further comprising two lateral walls protruding from the main body; wherein each riser neck of the plurality of riser necks is on a surface of the main body opposite the surface from which the two lateral walls protrude. 
     
     
         34 . The lip of  claim 21 , wherein a ratio of a maximum height, T 3 , of each nose of the plurality of noses divided by a maximum height, T 2 , of the main body has a value such that: 0.90≤T 3 /T 2 ≤1.10. 
     
     
         35 . The lip of  claim 21 , wherein one or both of:
 a ratio of a maximum height, T 2 , of the main body divided by a height, T 1 , of the main body on a surface opposite to a surface from which the plurality of noses protrudes has a value such that: 1.60≤T 2 /T 1 ≤2.00; and   a ratio of a maximum height, T 3 , of each nose of the plurality of noses divided by the height T 1  of the main body has a value such that: 1.60≤T 3 /T 1 ≤2.00.   
     
     
         36 . The lip of  claim 30 , wherein one or both of:
 a ratio of a maximum height, T 3 , of each nose of the plurality of noses divided by a maximum thickness, T 4 , of each lateral wall of the two lateral walls has a value such that: 1.20≤T 3 /T 4 ≤1.60; and   a ratio of a maximum height, T 2 , of the main body divided by the maximum thickness T 4  of each lateral wall of the two lateral walls has a value such that: 1.20≤T 2 /T 4 ≤1.60.   
     
     
         37 . A shovel for an earth moving machine comprising: a shovel body, and a lip welded to the shovel body, the lip comprising:
 a main body; and   a plurality of noses protruding from the main body;   wherein at least one transmission surface between each nose of the plurality of noses and the main body has a slope variation of between 0° and 10°, each transmission surface comprising at least a portion of a stabilisation surface of the respective nose and a portion of a surface of the main body.   
     
     
         38 . A method for manufacturing an earth moving machine shovel lip, comprising:
 introducing molten steel into a lip mould through one or more openings in the lip mould, the lip mould comprising a plurality of risers;   cooling or waiting for the molten steel introduced into the lip mould until it solidifies; and   removing the plurality of risers from the lip manufactured with the lip mould.   
     
     
         39 . The method of  claim 38 , wherein the plurality of risers of the lip mould comprises at least as many risers as noses in the lip, and each riser of the plurality of risers is at an end of a reinforcing rib of a different nose and on a surface opposite the surface from which two lateral walls of the lip protrude, the end being on a main body of the lip. 
     
     
         40 . The method of  claim 38 , wherein the manufactured lip comprises:
 a main body; and   a plurality of noses protruding from the main body;   wherein at least one transmission surface between each nose of the plurality of noses and the main body has a slope variation of between 0° and 10°, each transmission surface comprising at least a portion of a stabilisation surface of the respective nose and a portion of a surface of the main body.