Cutting Bit Carrier for Cutting Bits

Abstract

The present disclosure relates to a cutting bit carrier for hard rock mining applications. Usually, replacing worn cutting bits may take much effort and may be time consuming. The present cutting bit carrier may comprise a first carrier member including a first supporting portion configured to contact a cutting bit shank of a cutting bit for supporting the cutting bit, and a second carrier member including a second supporting portion configured to contact the cutting bit shank of the cutting bit for supporting the cutting bit. The second carrier member may be detachably mountable to the first carrier member.

1 . A cutting bit carrier for hard rock mining applications, comprising:
 a first carrier member including a first supporting portion configured to contact a cutting bit shank of a cutting bit for supporting the cutting bit; and   a second carrier member including a second supporting portion configured to contact the cutting bit shank of the cutting bit for supporting the cutting bit, the second carrier member being detachably mountable to the first carrier member.   
     
     
         2 . The cutting bit carrier of  claim 1 , wherein an interface between the first carrier member and the second carrier member is configured to be substantially parallel to a cutting bit axis of the cutting bit. 
     
     
         3 . The cutting bit carrier of  claim 1 , wherein
 the first carrier member includes a reception portion configured to at least partially receive the second carrier member; and   the second carrier member includes a mounting portion configured to, in an assembled state of the cutting bit carrier, at least partially engage with the reception portion.   
     
     
         4 . The cutting bit carrier of  claim 3 , wherein
 the reception portion includes at least one first protrusion protruding in a first direction configured to be perpendicular with respect to a cutting bit axis, and   the mounting portion includes at feast one second protrusion protruding in a second direction opposite to the first direction, the at least one first protrusion being configured to, in the assembled state of the eating bit carrier, to at least partially engage with the at least one second protrusion   
     
     
         5 . The cutting bit carrier of  claim 4 , wherein
 the at least one first protrusion includes a first inclined lateral surface; and   the at least one second protrusion includes a second inclined lateral surface) being substantially parallel to the first inclined lateral surface, the first inclined lateral surface and the second inclined lateral surface at least partially contacting one another in an assembled state of the cutting bit carrier.   
     
     
         6 . The cutting bit carrier of  claim 1 , further comprising a locking element detachably mountable to the first carrier member and the second carrier member, locking element being configured to, in an assembled state, prevent the first carrier member and the second carrier member from detaching from one another. 
     
     
         7 . The cutting bit carrier of  claim 6 , wherein
 the first carrier member includes at least one first through hole extending substantially perpendicular with respect to a cutting bit axis;   the second carrier member includes at least one second through hole extending substantially perpendicular with respect to the cutting bit axis; and   the locking element is a substantially C-shaped element having, a first elongated portion configured to extend into the at least one first through hole and a second elongated portion configured to extend into the at least one second through hole.   
     
     
         8 . A tool support configured to be mounted to a cutting head used in hard rock mining applications, the tool support comprising:
 an annular body;   a plurality of cutting bit carriers according to any one of the preceding claims, at least one of the first carrier member and the second carrier member being integrally formed with the annular body; and   a plurality of cutting bits rotatably supported by an associated one of the plurality of cutting bit carriers.   
     
     
         9 . A cutting head used in hard rock mining applications, comprising:
 a base member having a rotational axis and including a plurality of tool support receiving portions extending around the rotational axis; and   a plurality of tool supports according to  claim 8 , each of the plurality of tool supports being concentrically disposed about the rotational axis at an associated tool support receiving portion in, a releasable manner,   wherein the first carrier member is integrally formed with one of the plurality of tool supports, and   wherein the second carrier member is integrally formed with an adjacent tool support.   
     
     
         10 . A method for mounting a cutting bit to a cutting bit carrier provided at a cutting head used in hard rock mining applications, the cutting bit including a cutting bit axis extending from a cutting bit head to a cutting bit end flange via a cutting bit shank, the method comprising:
 disposing the cutting bit shank at a first supporting portion provided at a first carrier member -along a direction extending substantially perpendicular with respect to the cutting bit axis, the first supporting portion being configured to at least partially contact the cutting bit shank for at least partially supporting the same; and   detachably mounting a second carrier member to the first carrier member, the second carrier member including a second supporting portion configured to at least partially contact the cutting bit shank for at least partially supporting the same.   
     
     
         11 . The method of  claim 10 , wherein mounting the second carrier member to the first carrier member includes at least partially moving, the second carrier member relatively to the first carrier member along the cutting bit axis for bringing at least one first protrusion provided at the first carrier member into engagement with at least one second protrusion provided at'the second carrier member. 
     
     
         12 . The method of  claim 10 , wherein the first carrier member includes at least one first through, hole extending substantially perpendicular with respect to the cutting bit axis, and the second carrier member includes at least one second through hole extending substantially perpendicular with respect to the cutting bit axis, the method further comprising:
 mounting a locking element to the first carrier member and the second carrier member for preventing the first carrier member and the second carrier member from detaching from one another, the locking element including a first elongated portion configured to extend into the at least one first through hole and a second elongated portion configured to extend into the at least one second through hole.   
     
     
         13 . The method of  claim 10 , further comprising:
 integrally forming at least one of the first carrier member and the second carrier member with an annular tool support detachably mountable to a base member of the cutting head.   
     
     
         14 . The method of  claim 13 , further comprising:
 integrally forming the other one of the first carrier member and the second carrier member with an adjacent annular tool support mountable to the base member.   
     
     
         15 . A cutting bit configured to be replaceable mounted to a cutting bit carrier provided at a cutting head used in hard rock mining applications, the cutting bit comprising:
 a cone-like cutting bit head having a tip portion and a head base portion opposite to the tip portion, the cutting bit head being configured to extract hard rock mining material;   a substantially cylindrical cutting bit shank having a first end portion connected to the head base portion and a second end portion, the cutting bit shank having a first diameter; and   a substantially cylindrical cutting bit end flange connected to the second end portion of the cutting bit shank and having a second diameter substantially greater than the first diameter,   wherein the second diameter is in a range from about 120% to about 200% of the first diameter, and/or   wherein the head base portion has a third diameter greater than the first diameter, the third diameter being preferably in a range from about 120 to about 200% of the first diameter.