Patent Application
20170022725
This application claims the benefit of priority under 35 U.S.C. §119(a) of European Patent Application No. 15177578.0, filed Jul. 20, 2015, which is incorporated herein in its entirety by reference.
This disclosure relates to the field of demolition tools for crushing and/or cutting material and more particularly to the field of replaceable wear parts for demolition tools.
A demolition tool for crushing and/or cutting material is generally known. Typically, the demolition tool may comprise a jaw set having a lower jaw and an upper jaw. The upper and lower jaws may be pivotally connected. The upper and lower jaws may be moveable relative to each other. Cutting or crushing structures may be provided on both the upper jaw and the lower jaw. The work material may be crushed or cut by closing the upper jaw against the lower jaw under hydraulic pressure. The demolition tool may comprise a frame that connects the jaw set to a jib of a machine.
The demolition tool may have a jaw set that is suitable for crushing concrete. The jaw set may be adapted for crushing or cutting other materials, for example for cutting scrap iron and/or iron sections. The abrasive nature or hardness of some of these materials may cause the relatively rapid wear of the surfaces that engage the materials.
The demolition tool may be provided with replaceable wear parts that have wear surfaces. The wear part may be connected directly to the jaw set by conventional techniques. The wear pack may be provided on the upper and/or the lower jaw. The wear pack may be retained by fasteners that are exposed to relatively high stresses during operation.
U.S. Pat. No. 3,624,827A, assigned to Caterpillar Tractor Co, discloses an earthworking tip suitable for mounting on an adapter which is wedge-shaped in vertical cross section. The tip defines a rearwardly facing V-shaped projection which mates with a V-shaped opening in the adapter to transfer loads from the tip to the adapter. The tip has rearwardly extending upper and lower flanges to generally mate with the wedge-shaped adapter. Retaining means secure the tip upon the adapter.
The present disclosure is directed, at least in part, to improving or overcoming one or more aspects of the prior art system.
In a first aspect, the present disclosure describes a replaceable tip for a demolition tool. The replaceable tip may comprise: a first sidewall having a first contact side; a second sidewall having a second contact side; and a center wall connecting the first sidewall and the second sidewall, the center wall having a third contact side provided with a recess, the recess having first and second abutment surfaces and the third contact side having a third abutment surface adjacent the recess; and a channel defined by the first, second and third contact sides, the channel being configured to receive an adapter of the demolition tool.
In a second aspect, the present disclosure describes a method of reducing wear on an adapter mounted to a demolition tool. The method comprising the steps of: providing a replaceable tip; coupling the replaceable tip to the adapter comprising a body having a central side, the central side having first, second and third engagement surfaces wherein the central side extends longitudinally from a base to an apex, wherein the first abutment surface contacts the first engagement surface; and closing jaws of the demolition tool to crush work material such that the resultant demolition force is directed to the adapter in a direction perpendicular to the first abutment surface.
The foregoing and other features and advantages of the present disclosure will be more fully understood from the following description of various embodiments, when read together with the accompanying drawings, in which:
This disclosure generally relates to a replaceable tip for assembly onto a demolition tool.
Replaceable tip 10 may comprise a wear surface 18 that extends along the surfaces of the first sidewall 12, the second sidewall 14 and the center wall 16. Wear surface 18 may be the outer surface of replaceable tip 10 that contacts material during work operations.
One or more hoist loops (not shown) may be positioned on the wear surface 18 to enable ease of handling by a hoist during attachment and removal operations of the replaceable tip 10.
With reference to
First sidewall 12 may comprise a first edge 22. First edge 22 may be bounded by a first end 21 and a first hem 23. First hem 23 may be joined to a first inclined end 29 which is slanted relative to the first hem 23. First end 21 and first inclined end 29 may be connected to opposite ends of the center wall 16. First end 21 may extend from the first edge 22 to the center wall 16. First inclined end 29 may extend from the first hem 23 to the center wall 16.
First end 21 may inclined by an angle α1. In an embodiment, first end 21 may inclined by an angle α1 of 121 to 122 degrees from first edge 22. In a further embodiment, angle α1 may be 121.2 degrees. First edge 22 may inclined by an angle α2. In an embodiment, first edge 22 may inclined by an angle α2 of 99 to 100 degrees from first hem 23. In a further embodiment, angle α2 may be 99.9 degrees. First hem 23 may inclined by an angle α3. In an embodiment, first hem 23 may inclined by an angle α3 of 158 to 159 degrees from first inclined end 29. In a further embodiment, angle α3 may be 158.9 degrees.
With reference to
First step-up portion 24 may extend substantially longitudinally along the first contact side 20. First step-up portion 24 may extend substantially longitudinally to the first hem 23. First step-up portion 24 may extend in a direction away from the first end 21 to the first hem 23. First step-up portion 24 may extend substantially longitudinally from the first step-down portion 34 to the first hem 23. First step-down portion 34 may extend substantially longitudinally along the first contact side 20. First step-down portion 34 may extend longitudinally to the first end 21. First step-down portion 34 may extend in a direction away from the first hem 23 to the first end 21. First step-down portion 34 may extend substantially longitudinally from the first step-up portion 24 to the first end 21.
First sidewall 12 may have a plate-like structure. First sidewall 12 may have a length L1. In an embodiment, first sidewall 12 may have a length L1 ranging from 434 mm to 435 mm. In a further embodiment, first sidewall 12 may have a length L1 of 434.9 mm. With reference to
With reference to
Second sidewall 14 may comprise a second edge 28. Second edge 28 may be bounded by a second end 25 and a second hem 27. Second hem 27 may be joined to a second inclined end 31 which is slanted relative to the second hem 27. Second end 25 and second inclined end 31 may be connected to opposite ends of the center wall 16. Second end 25 may extend from the second edge 28 to the center wall 16. Second inclined end 31 may extend from the second hem 27 to the center wall 16.
Second end 25 may inclined by an angle α1. In an embodiment, second end 25 may inclined by an angle α1 of 121 to 122 degrees from second edge 28. In a further embodiment, angle α1 may be 121.2 degrees. Second edge 28 may inclined by an angle α2. In an embodiment, second edge 28 may inclined by an angle α2 of 99 to 100 degrees from second hem 27. In a further embodiment, angle α2 may be 99.9 degrees. Second hem 27 may inclined by an angle α3. In an embodiment, second hem 27 may inclined by an angle α3 of 158 to 159 degrees from second inclined end 31. In a further embodiment, angle α3 may be 158.9 degrees.
Second contact side 26 may comprise a split-level. Second contact side 26 may comprise a second step-up portion 30 and a second step-down portion 40. Second step-up portion 30 may be contiguous with second step-down portion 40. Second step-up portion 30 may extend substantially transversely across the second contact side 26. Second step-down portion 40 may extend substantially transversely across the second contact side 26. Second step-up portion 30 may extend from the second edge 28 into the replaceable tip 10 towards the center wall 16. Second step-down portion 40 may extend from the second edge 28 into the replaceable tip 10 towards the center wall 16.
Second step-up portion 30 may extend substantially longitudinally along the second contact side 26. Second step-up portion 30 may extend substantially longitudinally to the second hem 27 and second inclined end 31. Second step-up portion 30 may extend in a direction away from the second end 25 to the second hem 27. Second step-up portion 30 may extend substantially longitudinally from the second step-down portion 40 to the second hem 27 and second inclined end 31. Second step-down portion 40 may extend substantially longitudinally to the second end 25. Second step-down portion 40 may extend in a direction away from the second inclined end 31 to the second end 25. Second step-down portion 40 may extend substantially longitudinally from the second step-up portion 30 to the second end 25.
Second sidewall 14 may have a plate-like structure. Second sidewall 14 may have a length L1 ranging from 434 mm to 435 mm. Second sidewall 14 may have a length L1 of 434.9 mm. With reference to
First sidewall 12 may be substantially parallel to the second sidewall 14. First contact side 20 may be substantially parallel to the second contact side 26. First and second step- up portions 24, 30 may be correspondingly positioned on the respective first and second contact sides 20, 26 along the replaceable tip 10. First and second step-down portions 34, 40 may be correspondingly positioned on the respective first and second contact sides 20, 26 along the replaceable tip 10. The straight-line distance between the first and second contact sides 20, 26 may be the lowest at the first and second step-up portions 24, 30.
First sidewall 12 and second sidewall 14 may be provided with securing portions 32. Securing portions 32 may be positioned on the first and second step-up portions 24, 30. Respective securing portions 32 may be correspondingly positioned on the replaceable tip 10. In an embodiment, the securing portion 32 may be a through hole extending through the respective first sidewall 12 and second sidewall 14. The central axis of the respective securing portion 32 may be mutually aligned.
The center wall 16 may connect the first sidewall 12 to the second sidewall 14. First sidewall 12 may be substantially perpendicular to the center wall 16. Second sidewall 14 may be substantially perpendicular to the center wall 16. First sidewall 12 and the second sidewall 14 may be connected to opposite sides of the center wall 16. First sidewall 12 and the second sidewall 14 may be connected to opposite longitudinal edges of the center wall 16.
Center wall 16 may have a first transverse edge 36 and a second transverse edge 38. First transverse edge 36 may be connected between the first end 21 of the first sidewall 12 and the second end 25 of the second sidewall 14. Second transverse edge 38 may be connected between the first inclined end 29 of the first sidewall 12 and the second inclined end 31 of the second sidewall 14.
Center wall 16 may have a crushing point 42. Crushing point 42 may form part of the wear surface 18 of the replaceable tip 10. Crushing point 42 may impact material to be crushed during demolition operations. Crushing point 42 may extend from the center wall 16 away from the securing portion 32. Crushing point 42 may be extended from the center wall 16 away from the first and second edges 22, 28. Crushing point 42 may be extended substantially transversely across the replaceable tip 10. Crushing point 42 may extend substantially transversely from the center wall 16 away from the securing portion 32. Crushing point 42 may extend substantially transversely from the center wall 16 away from the first and second edges 22, 28.
In an embodiment, crushing point 42 may be planar. Crushing point 42 may extend substantially transversely across the center wall 16. Planar crushing point 42 may be substantially perpendicular to the first and second contact sides 20, 26.
Center wall 16 may have a third contact side 44. Third contact side 44 may be on the side of the center wall 16 opposite to the side with the wear surface 18. Third contact side 44 may contact a portion of the adapter (not shown). Third contact side 44 may be positioned between the first and second contact sides 20, 26. Third contact side 44 may be substantially perpendicular to the first and second contact sides 20, 26.
Third contact side 44 may be provided with a recess 46. Recess 46 may have an opening 48 on the third contact side 44. The opening 48 may provide access into the recess 46. Recess 46 may extend into the center wall 16. Recess 46 may extend into the center wall 16 towards the wear surface 18. Recess 46 may extend into the center wall 16 towards the crushing point 42.
Recess 46 may be positioned between the first and second contact sides 20, 26. The first and second contact sides 20, 26 may border the recess 46 on opposite sides. Opening 48 may extend transversely across the third contact side 44 between the first and second contact sides 20, 26.
First step-down portion 34 may extend into the recess 46. On the opposite side, second step-down portion 40 may extend into the recess 46. Recess 46 may have a central plane C1 that is substantially parallel to the first and second contact sides 20, 26. In an embodiment, central plane C1 may be parallel to the borders between the first and second step-up portions 24, 30 and the first and second step-down portions 34, 40.
With reference to
The first abutment surface 50 may have a suitable dimension and shape to be in force engagement with the adapter. In an embodiment, the first abutment surface 50 may be rectangular in shape 50. In an embodiment, first abutment surface 50 may have a length of 130 mm to 133 mm. First abutment surface 50 may have a length of 131 mm. In an embodiment, first abutment surface 50 may have a width of 50 mm to 53 mm. First abutment surface 50 may have a length of 51.9 mm. First abutment surface 50 may be orientated such that the longer sides corresponding to the length may be parallel to the third contact side 44 and the shorter sides corresponding to the width may be parallel to the first and second contact sides 20, 26.
In a further embodiment, the first abutment surface 50 may have a portion of a longer side being protruded. The protruded side may be joined to the first abutment surface 50 through the portions of the side that are convexly curved. The protruded side may be centrally positioned relative to the rest of the first abutment surface 50. The protruded side may be equidistant from the shorter sides.
The protruded side may be remote from the third contact surface 44 and adjacent to the opening 48. The protruded side may be parallel the third contact surface 44 and perpendicular to the first contact side 20 and to the second contact side 26. The protruded side may have a length of 95 mm to 97 mm. The protruded side may have a length of 96 mm. The distance between the protruded side and the parallel longer side may be 91 mm to 97 mm. The distance between the protruded side and the parallel longer side may be 92.2 mm.
First abutment surface 50 may be adjacent to opening 48 of the recess 46. Opening 48 may border an edge of the abutment surface 50. First abutment surface 50 may extend from the opening 48 into the center wall 16. First abutment surface 50 may be inclined relative to the central plane C1. First abutment surface 50 may be positioned between the first contact side 20 and the second contact side 26. First abutment surface 50 may be substantially perpendicular to the first contact side 20 and to the second contact side 26.
The recess 46 may have a second abutment surface 52 of the replaceable tip 10. The second abutment surface 52 may abut a portion of the adapter (not shown) during crushing operation of the demolition tool. In an embodiment, second abutment surface 52 may be in force engagement during crushing operation of the demolition tool. Forces created by the demolition operation may be transferred to the adapter through the second abutment surface 52 when the second abutment surface 52 is in force engagement with the adapter.
The second abutment surface 52 may have a suitable dimension and shape to be in force engagement with the adapter. In an embodiment, second abutment surface 52 may be rectangular in shape. In an embodiment, second abutment surface 52 may have a length of 130 mm to 133 mm. Second abutment surface 52 may have a length of 131 mm. In an embodiment, second abutment surface 52 may have a width of 85 mm to 87 mm. Second abutment surface 52 may have a length of 86 mm. Second abutment surface 52 may be orientated such that the longer sides corresponding to the length may be parallel to the third contact side 44 and the shorter sides corresponding to the width may be parallel to the first and second contact sides 20, 26.
Second abutment surface 52 may be opposite to opening 48 of the recess 46. Second abutment surface 52 may be spaced from the opening 48. The first abutment surface 50 may be adjacent to the second abutment surface 52. First abutment surface 50 may extend from the opening 48 to the second abutment surface 52. Second abutment surface 52 may be inclined to the first abutment surface 50. First abutment surface 50 may be substantially perpendicular to the second abutment surface 52. First abutment surface 50 may have the same width as the second abutment surface 52.
Second abutment surface 52 may be inclined relative to the central plane C1. In an embodiment, the central plane C1 may intersect the second abutment surface 52. Second abutment surface 52 may be positioned between the first contact side 20 and the second contact side 26. Second abutment surface 52 may be substantially perpendicular to the first contact side 20 and to the second contact side 26.
In an embodiment, first and second abutment surfaces 50, 52 may act to direct a resultant demolition force through the replaceable tip 10 to the adapter (not shown). The first and second abutment surfaces 50, 52 may act to direct a resultant demolition force through the replaceable tip 10 to the adapter when both the first and second abutment surfaces 50, 52 are in force engagement with the adapter. The first and second abutment surfaces 50, 52 may be in force engagement with the adapter when the replaceable tool 10 is subject to demolition forces.
First and second abutment surfaces 50, 52 may direct the resultant demolition force through the replaceable tip 10 to the adapter (not shown) in a direction substantially perpendicular to the first abutment surface 50. The resultant demolition force may be directed substantially perpendicular to the first abutment surface 50 with the demolition tool (not shown) at initiation of a demolition operation with the jaws (not shown) fully open. The jaws may contain material to be crushed.
A demolition force may be a force that is produced by a work machine. The demolition force may be directed through the replaceable tip 10 to the material to be crushed. The demolition tool (not shown) may have a cylinder to open and close the jaws. In an embodiment, the demolition force may be a force produced by the demolition tool cylinder when the jaws are actuated to close.
The demolition tool may be connected to a machine arm (not shown) having a further cylinder. In an alternative embodiment, the demolition force may further include the force generated by a bucket cylinder. The replaceable tip 10 may direct the resultant force substantially perpendicular to the first abutment surface 50.
A resultant demolition force may be the force produced on the replaceable tip 10. In an embodiment, the resultant demolition force may arise from the demolition force produced by the cylinder in the demolition. In an alternative embodiment, the resultant demolition force may arise from the demolition force produced by the cylinder in the demolition tool and the cylinder in the machine arm.
The resultant demolition force may be produced at the time the jaws move from a fully opened position to a closed position. The resultant demolition force may be produced with jaws containing material to be crushed.
Replaceable tip 10 may have a third abutment surface 54. The third abutment surface 54 may abut a portion of the adapter (not shown) during crushing operation of the demolition tool. In an embodiment, third abutment surface 54 may be in force engagement during crushing operation of the demolition tool. Forces created by the demolition operation may be transferred to the adapter through the third abutment surface 54 when the third abutment surface 54 is in force engagement with the adapter.
Third abutment surface 54 may be provided on the third contact side 44. Third abutment surface 54 may be adjacent to the recess 46. Third abutment surface 54 may be adjacent to the opening 48 of the recess 46. Third abutment surface 54 may extend from the first transverse edge 36 to the recess 46. Third abutment surface 54 may extend from the first transverse edge 36 to the opening 48. Third abutment surface 54 may be inclined to the first abutment surface 50. Third abutment surface 54 may be perpendicular to the first abutment surface 50. Third abutment surface 54 may be parallel to the second abutment surface 52.
The third abutment surface 54 may have a suitable dimension and shape to be in force engagement with the adapter. In an embodiment, third abutment surface 54 may be rectangular in shape. In an embodiment, third abutment surface 54 may have a length of 130 mm to 133 mm. Third abutment surface 54 may have a length of 131 mm. In an embodiment, third abutment surface 54 may have a width of 75 mm to 79 mm. Third abutment surface 54 may have a length of 77.4 mm. Third abutment surface 54 may be orientated such that the longer sides corresponding to the length may be parallel to the third contact side 44 and the shorter sides corresponding to the width may be parallel to the first and second contact sides 20, 26.
Third abutment surface 54 may be inclined relative to the central plane C1. Third abutment surface 54 may be positioned between the first contact side 20 and the second contact side 26. Third abutment surface 54 may be substantially perpendicular to the first contact side 20 and to the second contact side 26. Third abutment surface 54 may have the same width as the second abutment surface 52.
In an embodiment, first and third abutment surfaces 50, 54 may act to direct the demolition forces through the replaceable tip 10 to the adapter (not shown). The first and third abutment surfaces 50, 54 may act to direct a resultant demolition force through the replaceable tip 10 to the adapter when both the first and third abutment surfaces 50, 54 are in force engagement with the adapter. The first and third abutment surfaces 50, 54 may be in force engagement with the adapter when the replaceable tool 10 is subjection to demolition forces.
First and third abutment surfaces 50, 54 may direct the demolition forces through the replaceable tip 10 to the adapter (not shown) in a direction substantially perpendicular to the first abutment surface 50. The demolition forces may be directed substantially perpendicular to the first abutment surface 50 with the demolition tool (not shown) at initiation of a demolition operation with the jaws (not shown) fully open. The jaws may contain material to be crushed.
The combination of the first and third abutment surfaces 50, 54 may act alternatively to the combination of first and second abutment surfaces 50, 52 to direct the demolition forces through the replaceable tip 10 to the adapter (not shown).
The recess 46 may have a non-contact surface 56 connecting the second abutment surface 52 to the third abutment surface 54. Non-contact surface 56 may be opposite to the first abutment surface 50. Non-contact surface 56 may be adjacent to opening 48 of the recess 46. Opening 48 may border an edge of the non-contact surface 56.
Non-contact surface 56 may extend from the opening 48 into the center wall 16. The non-contact surface 56 may be joined to the third abutment surface 54. The non-contact surface 56 may be joined to the third abutment surface 54 at the edge bordering the opening 48.
Non-contact surface 56 may be substantially parallel relative to the central plane C1. Non-contact surface 56 may be positioned between the first contact side 20 and the second contact side 26. Non-contact surface 56 may be substantially perpendicular to the first contact side 20 and to the second contact side 26.
Center wall 16 may have a curved portion 58. Curved portion 58 may connect the recess 46 to an end of the replaceable tip 10. Curved portion 58 may be positioned between the recess 46 and the second transverse edge 38.
Curved portion 58 may have a curved surface 62 on the curved portion 58 of the center wall 16. Curved surface 62 may be positioned between the first abutment surface 50 and the second transverse edge 38. Curved surface 62 may be positioned between the first contact side 20 and the second contact side 26. Curved surface 62 may be substantially perpendicular to the first contact side 20 and to the second contact side 26.
Replaceable tip 10 may have a channel 60. The channel 60 may be defined by the first, second and third contact sides 20, 26, 44. The channel 60 may be configured to receive the adapter (not shown) of the demolition tool. Channel 60 may be formed on the replaceable tip 10 interiorly relative to the external wear surface 18. Recess 46 may be assessable from the channel 60. Recess 46 communicates with the channel 60 through the opening 48.
The channel 60 may have a substantially U shaped cross section. Channel 60 may have a width suitable for receiving the adapter. In an embodiment, channel 60 may have a width ranging from 142 mm to 152 mm between the first and second contact sides 20, 26. In an embodiment, channel 60 may have a width of 147 mm.
Channel 60 may have a longitudinal axis X. The first, second and third abutment surfaces 50, 52, 54 may be mutually aligned along the longitudinal axis X. The first, second and third abutment surfaces 50, 52, 54 may be mutually aligned linearly along the longitudinal axis X. The respective longitudinal axes of the first, second and third abutment surfaces 50, 52, 54 may be parallel to the longitudinal axis X. The respective longitudinal axes of the first, second and third abutment surfaces 50, 52, 54 may be aligned to the longitudinal axis X.
Body 66 may have support sides 70. Support sides 70 may be parallel. Support sides 70 may contact the first and second contact sides 20, 26 of the replaceable tip 10. Support sides 70 may have a reciprocal securing portion 72. Respective reciprocal securing portions 72 may be correspondingly positioned on the replaceable tip 10. In an embodiment, the reciprocal securing portion 72 may be a through hole extending through the body 66. Openings of the through hole may be formed on the support sides 70.
Each support side 70 may comprise split-levels. Each support side 70 may comprise a reciprocal step-down portion 74 and a reciprocal step-up portion 76. Reciprocal step-up portion 76 may be contiguous with reciprocal step-down portion 74. Reciprocal step-down portion 74 may extend substantially transversely across each support side 70. Reciprocal step-up portion 76 may extend substantially transversely across each support side 70. Reciprocal securing portion 72 may be positioned on the reciprocal step-down portions 74.
Reciprocal step-up portions 76 on the support sides 70 may be mutually corresponding. Reciprocal step-up portions 76 on the support sides 70 may have corresponding shape and dimension. Reciprocal step-up portions 76 may fit within the first and second step-down portions 34, 40 on the first and second contact sides 20, 26.
Reciprocal step-down portions 74 on the support sides 70 may be mutually corresponding. Reciprocal step-down portions 74 on the support sides 70 may have corresponding shape and dimension. Reciprocal step-down portions 74 may receive the first and second step-up portions 24, 30 on the first and second contact sides 20, 26.
Adapter 64 may have a central side 78. Central side 78 may contact the third contact side 44. Central side 78 may be positioned between the support sides 70. Central side 78 may be substantially perpendicular to the support sides 70.
Adapter 64 may have a projection 80. Projection 80 may extend substantially transversally from body 66. Projection 80 may extend from body 66 in a direction substantially perpendicular to the central side 78. The reciprocal step-up portions 76 may extend along the sides of the projection 80.
Adapter 64 may have a shoulder 82. Shoulder 82 may extend substantially longitudinally from body 66. Shoulder 82 may extend from body 66 in a direction substantially perpendicular to the base 68. The reciprocal step-up portions 76 may extend along the sides of the shoulder 82. The adapter 64 may have an apex 83 on the shoulder. The central side 78 may extend from the base 68 to the apex 83.
The projection 80 may have a first engagement surface 84 on the central side 78. The first engagement surface 84 may be in constant contact with the first abutment surface 50 of the replaceable tip 10. Forces created by the demolition operation may be transferred to the adapter 64 from first abutment surface 50 to the first engagement surface 84. First engagement surface 84 may be positioned between the support sides 70. First engagement surface 84 may be substantially perpendicular to the support sides 70.
The projection 80 may have a second engagement surface 86 on the central side 78. The second engagement surface 86 may abut the second abutment surface 52 of the replaceable tip 10 during crushing operation of the demolition tool. Forces created by the demolition operation may be transferred to the adapter 64 from the second abutment surface 52 to the second engagement surface 86. Second engagement surface 86 may be positioned between the support sides 70. Second engagement surface 86 may be substantially perpendicular to the support sides 70.
First engagement surface 84 may be adjacent to the second engagement surface 86. First engagement surface 84 may be connected to the second engagement surface 86. First engagement surface 84 may be inclined to the second engagement surface 86. First engagement surface 84 may be perpendicular to the second engagement surface 86.
The projection 80 may have a third engagement surface 88 on the central side 78. The third engagement surface 88 may abut the third abutment surface 54 of the replaceable tip 10 during crushing operation of the demolition tool. Forces created by the demolition operation may be transferred to the adapter 64 from the third abutment surface 54 to the third engagement surface 88.
Third engagement surface 88 may be provided on the shoulder 82. Third engagement surface 88 may be adjacent to the projection 80. Third engagement surface 88 may extend from the projection 80. Third engagement surface 88 may be inclined to the first engagement surface 84. Third engagement surface 88 may be perpendicular to the first engagement surface 84. Third engagement surface 88 may be parallel to the second engagement surface 86.
Third engagement surface 88 may be positioned between the support sides 70. Third engagement surface 88 may be substantially perpendicular to the support sides 70. Third engagement surface 88 may have the same width as the second engagement surface 86.
The projection 80 may have a reciprocal non-contact surface 90. Reciprocal non-contact surface 90 may connect the projection 80 to the shoulder 82. Reciprocal non-contact surface 90 may connect the second engagement surface 86 to the third engagement surface 88. Reciprocal non-contact surface 90 may be opposite the first engagement surface 84 on the projection. Reciprocal non-contact surface 90 may be positioned between the support sides 70. Reciprocal non-contact surface 90 may be substantially perpendicular to the support sides 70.
Body 66 may have a curved section 92. Curved section 92 may connect the projection 80 to the base 68. Central side 78 may extend on the curved section 92. The curved portion 58 may extend over the curved section 92.
The adapter 64 may receive a resultant demolition force through the replaceable tip 10 in a direction substantially perpendicular to the first engagement surface 84. The resultant demolition force may be directed substantially perpendicular to the first engagement surface 84 with the demolition tool (not shown) at initiation of a demolition operation with the jaws (not shown) fully open.
The replaceable tip 10 may be coupled to the adapter 64 by a pin 100. The pin 100 may be inserted through the reciprocal securing portion 72. Replaceable tip 10 may be oriented to receive the projection 80 and the shoulder 82 of the adapter 64 into the channel 60.
In an alternative embodiment, second abutment surface 52 may be spaced from the second engagement surface 86. Third abutment surface 54 may be in contact with the third engagement surface 88.
The replaceable tip 10 may prevent wear on the adapter 64 mounted on the demolition tool 94. The method may comprise the steps of providing the replaceable tip 10; coupling the replaceable tip 10 to the adapter 64 comprising a body 66 having a central side 78, the central side 78 having first, second and third engagement surfaces 84, 86, 88 wherein the central side 78 extends longitudinally from a base 68 to an apex 83, wherein the first abutment surface 50 force engages the first engagement surface 84; and closing jaws 96, 98 of the demolition tool 94 to crush work material such that the resultant demolition force is directed to the adapter 64 in a direction perpendicular to the first abutment surface 50. The second abutment surface 52 may force engage the second engagement surface 86 or the third abutment surface 54 may force engage the third engagement surfaces 88.
Closing of the jaws 96, 98 may be initiated when the jaws 96, 98 are at a fully opened position. The jaws 96, 98 may be at limit of opening. The jaws 96, 98 may be under a load. The jaws 96, 98 may be under further hydraulic pressure from the bucket cylinder 104. The hydraulic pressure may result in force engagement of the first abutment surface 50 force engages the first engagement surface 84. The hydraulic pressure may result in force engagement of either the force engagement of the second abutment surface 52 and the second engagement surface 86 or the force engagement of the third abutment surface 54 and the third engagement surfaces 88.
The skilled person would appreciate that foregoing embodiments may be modified or combined to obtain the replaceable tip 10 of the present disclosure.
This disclosure describes a replaceable tip 10. The replaceable tip 10 may be mounted to the jaw set of a demolition tool 94 such as multiprocessors, pulverizers, crushers and other demolition tools that may have a jawset or grapple tine which have closing movements. The replaceable tip 10 may be mounted to an adapter 64 of the first jaw 96 or the second jaw 98. The replaceable tip 10 may shield the adapter 64 from wear during demolition operations such as crushing or cutting of materials. The replaceable tip 10 may be made of materials suitable for the crushing or cutting operations.
The replaceable tip 10 may be easily and efficiently mounted on and dismounted from the adapter 64. Once the replaceable tip 10 is worn out due to work operations of the demolition tool, the replaceable tip 10 may be easily replaced with a substitute replaceable tip 10. The replaceable tip 10 may reduce failure in the adapter 64 as a result of plastic deformation caused by an excessive load.
Accordingly, this disclosure includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above-described elements in all possible variations thereof is encompassed by the disclosure unless otherwise indicated herein.
Where technical features mentioned in any claim are followed by reference signs, the reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, neither the reference signs nor their absence have any limiting effect on the technical features as described above or on the scope of any claim elements.
One skilled in the art will realize the disclosure may be embodied in other specific forms without departing from the disclosure or essential characteristics thereof. The foregoing embodiments are therefore to be considered in all respects illustrative rather than limiting of the disclosure described herein. Scope of the disclosed embodiments is thus indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalence of the claims are therefore intended to be embraced therein.
| Number | Date | Country | Kind |
|---|---|---|---|
| 15177578.0 | Jul 2015 | EP | regional |
